[ALSA] snd-aoa: add snd-aoa
Johannes Berg [Wed, 21 Jun 2006 13:42:43 +0000 (15:42 +0200)]
This large patch adds all of snd-aoa.
Consisting of many modules, it currently replaces snd-powermac
for all layout-id based machines and handles many more (for
example new powerbooks and powermacs with digital output that
previously couldn't be used at all).
It also has support for all layout-IDs that Apple has (judging
from their Info.plist file) but not all are tested.
The driver currently has 2 known regressions over snd-powermac:
 * it doesn't handle powermac 7,2 and 7,3
 * it doesn't have a DRC control on snapper-based machines
I will fix those during the 2.6.18 development cycle.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

35 files changed:
sound/Kconfig
sound/Makefile
sound/aoa/Kconfig [new file with mode: 0644]
sound/aoa/Makefile [new file with mode: 0644]
sound/aoa/aoa-gpio.h [new file with mode: 0644]
sound/aoa/aoa.h [new file with mode: 0644]
sound/aoa/codecs/Kconfig [new file with mode: 0644]
sound/aoa/codecs/Makefile [new file with mode: 0644]
sound/aoa/codecs/snd-aoa-codec-onyx.c [new file with mode: 0644]
sound/aoa/codecs/snd-aoa-codec-onyx.h [new file with mode: 0644]
sound/aoa/codecs/snd-aoa-codec-tas-gain-table.h [new file with mode: 0644]
sound/aoa/codecs/snd-aoa-codec-tas.c [new file with mode: 0644]
sound/aoa/codecs/snd-aoa-codec-tas.h [new file with mode: 0644]
sound/aoa/codecs/snd-aoa-codec-toonie.c [new file with mode: 0644]
sound/aoa/core/Makefile [new file with mode: 0644]
sound/aoa/core/snd-aoa-alsa.c [new file with mode: 0644]
sound/aoa/core/snd-aoa-alsa.h [new file with mode: 0644]
sound/aoa/core/snd-aoa-core.c [new file with mode: 0644]
sound/aoa/core/snd-aoa-gpio-feature.c [new file with mode: 0644]
sound/aoa/core/snd-aoa-gpio-pmf.c [new file with mode: 0644]
sound/aoa/fabrics/Kconfig [new file with mode: 0644]
sound/aoa/fabrics/Makefile [new file with mode: 0644]
sound/aoa/fabrics/snd-aoa-fabric-layout.c [new file with mode: 0644]
sound/aoa/soundbus/Kconfig [new file with mode: 0644]
sound/aoa/soundbus/Makefile [new file with mode: 0644]
sound/aoa/soundbus/core.c [new file with mode: 0644]
sound/aoa/soundbus/i2sbus/Makefile [new file with mode: 0644]
sound/aoa/soundbus/i2sbus/i2sbus-control.c [new file with mode: 0644]
sound/aoa/soundbus/i2sbus/i2sbus-control.h [new file with mode: 0644]
sound/aoa/soundbus/i2sbus/i2sbus-core.c [new file with mode: 0644]
sound/aoa/soundbus/i2sbus/i2sbus-interface.h [new file with mode: 0644]
sound/aoa/soundbus/i2sbus/i2sbus-pcm.c [new file with mode: 0644]
sound/aoa/soundbus/i2sbus/i2sbus.h [new file with mode: 0644]
sound/aoa/soundbus/soundbus.h [new file with mode: 0644]
sound/aoa/soundbus/sysfs.c [new file with mode: 0644]

index b65ee47..e0d791a 100644 (file)
@@ -58,6 +58,8 @@ source "sound/pci/Kconfig"
 
 source "sound/ppc/Kconfig"
 
+source "sound/aoa/Kconfig"
+
 source "sound/arm/Kconfig"
 
 source "sound/mips/Kconfig"
index f352bb2..a682ea3 100644 (file)
@@ -4,7 +4,7 @@
 obj-$(CONFIG_SOUND) += soundcore.o
 obj-$(CONFIG_SOUND_PRIME) += oss/
 obj-$(CONFIG_DMASOUND) += oss/
-obj-$(CONFIG_SND) += core/ i2c/ drivers/ isa/ pci/ ppc/ arm/ synth/ usb/ sparc/ parisc/ pcmcia/ mips/
+obj-$(CONFIG_SND) += core/ i2c/ drivers/ isa/ pci/ ppc/ arm/ synth/ usb/ sparc/ parisc/ pcmcia/ mips/ aoa/
 
 ifeq ($(CONFIG_SND),y)
   obj-y += last.o
diff --git a/sound/aoa/Kconfig b/sound/aoa/Kconfig
new file mode 100644 (file)
index 0000000..b11ccf6
--- /dev/null
@@ -0,0 +1,17 @@
+menu "Apple Onboard Audio driver"
+       depends on SND != n && PPC
+
+config SND_AOA
+       tristate "Apple Onboard Audio driver"
+       depends on SOUND && SND_PCM
+       ---help---
+       This option enables the new driver for the various
+       Apple Onboard Audio components.
+
+source "sound/aoa/fabrics/Kconfig"
+
+source "sound/aoa/codecs/Kconfig"
+
+source "sound/aoa/soundbus/Kconfig"
+
+endmenu
diff --git a/sound/aoa/Makefile b/sound/aoa/Makefile
new file mode 100644 (file)
index 0000000..d8de3e7
--- /dev/null
@@ -0,0 +1,4 @@
+obj-$(CONFIG_SND_AOA) += core/
+obj-$(CONFIG_SND_AOA) += codecs/
+obj-$(CONFIG_SND_AOA) += fabrics/
+obj-$(CONFIG_SND_AOA_SOUNDBUS) += soundbus/
diff --git a/sound/aoa/aoa-gpio.h b/sound/aoa/aoa-gpio.h
new file mode 100644 (file)
index 0000000..3a61f31
--- /dev/null
@@ -0,0 +1,81 @@
+/*
+ * Apple Onboard Audio GPIO definitions
+ *
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * GPL v2, can be found in COPYING.
+ */
+
+#ifndef __AOA_GPIO_H
+#define __AOA_GPIO_H
+#include <linux/workqueue.h>
+#include <linux/mutex.h>
+#include <asm/prom.h>
+
+typedef void (*notify_func_t)(void *data);
+
+enum notify_type {
+       AOA_NOTIFY_HEADPHONE,
+       AOA_NOTIFY_LINE_IN,
+       AOA_NOTIFY_LINE_OUT,
+};
+
+struct gpio_runtime;
+struct gpio_methods {
+       /* for initialisation/de-initialisation of the GPIO layer */
+       void (*init)(struct gpio_runtime *rt);
+       void (*exit)(struct gpio_runtime *rt);
+
+       /* turn off headphone, speakers, lineout */
+       void (*all_amps_off)(struct gpio_runtime *rt);
+       /* turn headphone, speakers, lineout back to previous setting */
+       void (*all_amps_restore)(struct gpio_runtime *rt);
+
+       void (*set_headphone)(struct gpio_runtime *rt, int on);
+       void (*set_speakers)(struct gpio_runtime *rt, int on);
+       void (*set_lineout)(struct gpio_runtime *rt, int on);
+
+       int (*get_headphone)(struct gpio_runtime *rt);
+       int (*get_speakers)(struct gpio_runtime *rt);
+       int (*get_lineout)(struct gpio_runtime *rt);
+
+       void (*set_hw_reset)(struct gpio_runtime *rt, int on);
+
+       /* use this to be notified of any events. The notification
+        * function is passed the data, and is called in process
+        * context by the use of schedule_work.
+        * The interface for it is that setting a function to NULL
+        * removes it, and they return 0 if the operation succeeded,
+        * and -EBUSY if the notification is already assigned by
+        * someone else. */
+       int (*set_notify)(struct gpio_runtime *rt,
+                         enum notify_type type,
+                         notify_func_t notify,
+                         void *data);
+       /* returns 0 if not plugged in, 1 if plugged in
+        * or a negative error code */
+       int (*get_detect)(struct gpio_runtime *rt,
+                         enum notify_type type);
+};
+
+struct gpio_notification {
+       notify_func_t notify;
+       void *data;
+       void *gpio_private;
+       struct work_struct work;
+       struct mutex mutex;
+};
+
+struct gpio_runtime {
+       /* to be assigned by fabric */
+       struct device_node *node;
+       /* since everyone needs this pointer anyway... */
+       struct gpio_methods *methods;
+       /* to be used by the gpio implementation */
+       int implementation_private;
+       struct gpio_notification headphone_notify;
+       struct gpio_notification line_in_notify;
+       struct gpio_notification line_out_notify;
+};
+
+#endif /* __AOA_GPIO_H */
diff --git a/sound/aoa/aoa.h b/sound/aoa/aoa.h
new file mode 100644 (file)
index 0000000..378ef1e
--- /dev/null
@@ -0,0 +1,131 @@
+/*
+ * Apple Onboard Audio definitions
+ *
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * GPL v2, can be found in COPYING.
+ */
+
+#ifndef __AOA_H
+#define __AOA_H
+#include <asm/prom.h>
+#include <linux/module.h>
+/* So apparently there's a reason for requiring driver.h to be included first! */
+#include <sound/driver.h>
+#include <sound/core.h>
+#include <sound/asound.h>
+#include <sound/control.h>
+#include "aoa-gpio.h"
+#include "soundbus/soundbus.h"
+
+#define MAX_CODEC_NAME_LEN     32
+
+struct aoa_codec {
+       char    name[MAX_CODEC_NAME_LEN];
+
+       struct module *owner;
+
+       /* called when the fabric wants to init this codec.
+        * Do alsa card manipulations from here. */
+       int (*init)(struct aoa_codec *codec);
+
+       /* called when the fabric is done with the codec.
+        * The alsa card will be cleaned up so don't bother. */
+       void (*exit)(struct aoa_codec *codec);
+
+       /* May be NULL, but can be used by the fabric.
+        * Refcounting is the codec driver's responsibility */
+       struct device_node *node;
+
+       /* assigned by fabric before init() is called, points
+        * to the soundbus device. Cannot be NULL. */
+       struct soundbus_dev *soundbus_dev;
+
+       /* assigned by the fabric before init() is called, points
+        * to the fabric's gpio runtime record for the relevant
+        * device. */
+       struct gpio_runtime *gpio;
+
+       /* assigned by the fabric before init() is called, contains
+        * a codec specific bitmask of what outputs and inputs are
+        * actually connected */
+       u32 connected;
+
+       /* data the fabric can associate with this structure */
+       void *fabric_data;
+
+       /* private! */
+       struct list_head list;
+       struct aoa_fabric *fabric;
+};
+
+/* return 0 on success */
+extern int
+aoa_codec_register(struct aoa_codec *codec);
+extern void
+aoa_codec_unregister(struct aoa_codec *codec);
+
+#define MAX_LAYOUT_NAME_LEN    32
+
+struct aoa_fabric {
+       char    name[MAX_LAYOUT_NAME_LEN];
+
+       struct module *owner;
+
+       /* once codecs register, they are passed here after.
+        * They are of course not initialised, since the
+        * fabric is responsible for initialising some fields
+        * in the codec structure! */
+       int (*found_codec)(struct aoa_codec *codec);
+       /* called for each codec when it is removed,
+        * also in the case that aoa_fabric_unregister
+        * is called and all codecs are removed
+        * from this fabric.
+        * Also called if found_codec returned 0 but
+        * the codec couldn't initialise. */
+       void (*remove_codec)(struct aoa_codec *codec);
+       /* If found_codec returned 0, and the codec
+        * could be initialised, this is called. */
+       void (*attached_codec)(struct aoa_codec *codec);
+};
+
+/* return 0 on success, -EEXIST if another fabric is
+ * registered, -EALREADY if the same fabric is registered.
+ * Passing NULL can be used to test for the presence
+ * of another fabric, if -EALREADY is returned there is
+ * no other fabric present.
+ * In the case that the function returns -EALREADY
+ * and the fabric passed is not NULL, all codecs
+ * that are not assigned yet are passed to the fabric
+ * again for reconsideration. */
+extern int
+aoa_fabric_register(struct aoa_fabric *fabric);
+
+/* it is vital to call this when the fabric exits!
+ * When calling, the remove_codec will be called
+ * for all codecs, unless it is NULL. */
+extern void
+aoa_fabric_unregister(struct aoa_fabric *fabric);
+
+/* if for some reason you want to get rid of a codec
+ * before the fabric is removed, use this.
+ * Note that remove_codec is called for it! */
+extern void
+aoa_fabric_unlink_codec(struct aoa_codec *codec);
+
+/* alsa help methods */
+struct aoa_card {
+       struct snd_card *alsa_card;
+};
+        
+extern int aoa_snd_device_new(snd_device_type_t type,
+       void * device_data, struct snd_device_ops * ops);
+extern struct snd_card *aoa_get_card(void);
+extern int aoa_snd_ctl_add(struct snd_kcontrol* control);
+
+/* GPIO stuff */
+extern struct gpio_methods *pmf_gpio_methods;
+extern struct gpio_methods *ftr_gpio_methods;
+/* extern struct gpio_methods *map_gpio_methods; */
+
+#endif /* __AOA_H */
diff --git a/sound/aoa/codecs/Kconfig b/sound/aoa/codecs/Kconfig
new file mode 100644 (file)
index 0000000..90cf58f
--- /dev/null
@@ -0,0 +1,32 @@
+config SND_AOA_ONYX
+       tristate "support Onyx chip"
+       depends on SND_AOA
+       ---help---
+       This option enables support for the Onyx (pcm3052)
+       codec chip found in the latest Apple machines
+       (most of those with digital audio output).
+
+#config SND_AOA_TOPAZ
+#      tristate "support Topaz chips"
+#      depends on SND_AOA
+#      ---help---
+#      This option enables support for the Topaz (CS84xx)
+#      codec chips found in the latest Apple machines,
+#      these chips do the digital input and output on
+#      some PowerMacs.
+
+config SND_AOA_TAS
+       tristate "support TAS chips"
+       depends on SND_AOA
+       ---help---
+       This option enables support for the tas chips
+       found in a lot of Apple Machines, especially
+       iBooks and PowerBooks without digital.
+
+config SND_AOA_TOONIE
+       tristate "support Toonie chip"
+       depends on SND_AOA
+       ---help---
+       This option enables support for the toonie codec
+       found in the Mac Mini. If you have a Mac Mini and
+       want to hear sound, select this option.
diff --git a/sound/aoa/codecs/Makefile b/sound/aoa/codecs/Makefile
new file mode 100644 (file)
index 0000000..31cbe68
--- /dev/null
@@ -0,0 +1,3 @@
+obj-$(CONFIG_SND_AOA_ONYX) += snd-aoa-codec-onyx.o
+obj-$(CONFIG_SND_AOA_TAS) += snd-aoa-codec-tas.o
+obj-$(CONFIG_SND_AOA_TOONIE) += snd-aoa-codec-toonie.o
diff --git a/sound/aoa/codecs/snd-aoa-codec-onyx.c b/sound/aoa/codecs/snd-aoa-codec-onyx.c
new file mode 100644 (file)
index 0000000..0b76507
--- /dev/null
@@ -0,0 +1,1113 @@
+/*
+ * Apple Onboard Audio driver for Onyx codec
+ *
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * GPL v2, can be found in COPYING.
+ *
+ *
+ * This is a driver for the pcm3052 codec chip (codenamed Onyx)
+ * that is present in newer Apple hardware (with digital output).
+ *
+ * The Onyx codec has the following connections (listed by the bit
+ * to be used in aoa_codec.connected):
+ *  0: analog output
+ *  1: digital output
+ *  2: line input
+ *  3: microphone input
+ * Note that even though I know of no machine that has for example
+ * the digital output connected but not the analog, I have handled
+ * all the different cases in the code so that this driver may serve
+ * as a good example of what to do.
+ *
+ * NOTE: This driver assumes that there's at most one chip to be
+ *      used with one alsa card, in form of creating all kinds
+ *      of mixer elements without regard for their existence.
+ *      But snd-aoa assumes that there's at most one card, so
+ *      this means you can only have one onyx on a system. This
+ *      should probably be fixed by changing the assumption of
+ *      having just a single card on a system, and making the
+ *      'card' pointer accessible to anyone who needs it instead
+ *      of hiding it in the aoa_snd_* functions...
+ *
+ */
+#include <linux/delay.h>
+#include <linux/module.h>
+MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("pcm3052 (onyx) codec driver for snd-aoa");
+
+#include "snd-aoa-codec-onyx.h"
+#include "../aoa.h"
+#include "../soundbus/soundbus.h"
+
+
+#define PFX "snd-aoa-codec-onyx: "
+
+struct onyx {
+       /* cache registers 65 to 80, they are write-only! */
+       u8                      cache[16];
+       struct i2c_client       i2c;
+       struct aoa_codec        codec;
+       u32                     initialised:1,
+                               spdif_locked:1,
+                               analog_locked:1,
+                               original_mute:2;
+       int                     open_count;
+       struct codec_info       *codec_info;
+
+       /* mutex serializes concurrent access to the device
+        * and this structure.
+        */
+       struct mutex mutex;
+};
+#define codec_to_onyx(c) container_of(c, struct onyx, codec)
+
+/* both return 0 if all ok, else on error */
+static int onyx_read_register(struct onyx *onyx, u8 reg, u8 *value)
+{
+       s32 v;
+
+       if (reg != ONYX_REG_CONTROL) {
+               *value = onyx->cache[reg-FIRSTREGISTER];
+               return 0;
+       }
+       v = i2c_smbus_read_byte_data(&onyx->i2c, reg);
+       if (v < 0)
+               return -1;
+       *value = (u8)v;
+       onyx->cache[ONYX_REG_CONTROL-FIRSTREGISTER] = *value;
+       return 0;
+}
+
+static int onyx_write_register(struct onyx *onyx, u8 reg, u8 value)
+{
+       int result;
+
+       result = i2c_smbus_write_byte_data(&onyx->i2c, reg, value);
+       if (!result)
+               onyx->cache[reg-FIRSTREGISTER] = value;
+       return result;
+}
+
+/* alsa stuff */
+
+static int onyx_dev_register(struct snd_device *dev)
+{
+       return 0;
+}
+
+static struct snd_device_ops ops = {
+       .dev_register = onyx_dev_register,
+};
+
+/* this is necessary because most alsa mixer programs
+ * can't properly handle the negative range */
+#define VOLUME_RANGE_SHIFT     128
+
+static int onyx_snd_vol_info(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_info *uinfo)
+{
+       uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+       uinfo->count = 2;
+       uinfo->value.integer.min = -128 + VOLUME_RANGE_SHIFT;
+       uinfo->value.integer.max = -1 + VOLUME_RANGE_SHIFT;
+       return 0;
+}
+
+static int onyx_snd_vol_get(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_value *ucontrol)
+{
+       struct onyx *onyx = snd_kcontrol_chip(kcontrol);
+       s8 l, r;
+
+       mutex_lock(&onyx->mutex);
+       onyx_read_register(onyx, ONYX_REG_DAC_ATTEN_LEFT, &l);
+       onyx_read_register(onyx, ONYX_REG_DAC_ATTEN_RIGHT, &r);
+       mutex_unlock(&onyx->mutex);
+
+       ucontrol->value.integer.value[0] = l + VOLUME_RANGE_SHIFT;
+       ucontrol->value.integer.value[1] = r + VOLUME_RANGE_SHIFT;
+
+       return 0;
+}
+
+static int onyx_snd_vol_put(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_value *ucontrol)
+{
+       struct onyx *onyx = snd_kcontrol_chip(kcontrol);
+       s8 l, r;
+
+       mutex_lock(&onyx->mutex);
+       onyx_read_register(onyx, ONYX_REG_DAC_ATTEN_LEFT, &l);
+       onyx_read_register(onyx, ONYX_REG_DAC_ATTEN_RIGHT, &r);
+
+       if (l + VOLUME_RANGE_SHIFT == ucontrol->value.integer.value[0] &&
+           r + VOLUME_RANGE_SHIFT == ucontrol->value.integer.value[1]) {
+               mutex_unlock(&onyx->mutex);
+               return 0;
+       }
+
+       onyx_write_register(onyx, ONYX_REG_DAC_ATTEN_LEFT,
+                           ucontrol->value.integer.value[0]
+                            - VOLUME_RANGE_SHIFT);
+       onyx_write_register(onyx, ONYX_REG_DAC_ATTEN_RIGHT,
+                           ucontrol->value.integer.value[1]
+                            - VOLUME_RANGE_SHIFT);
+       mutex_unlock(&onyx->mutex);
+
+       return 1;
+}
+
+static struct snd_kcontrol_new volume_control = {
+       .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+       .name = "Master Playback Volume",
+       .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+       .info = onyx_snd_vol_info,
+       .get = onyx_snd_vol_get,
+       .put = onyx_snd_vol_put,
+};
+
+/* like above, this is necessary because a lot
+ * of alsa mixer programs don't handle ranges
+ * that don't start at 0 properly.
+ * even alsamixer is one of them... */
+#define INPUTGAIN_RANGE_SHIFT  (-3)
+
+static int onyx_snd_inputgain_info(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_info *uinfo)
+{
+       uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+       uinfo->count = 1;
+       uinfo->value.integer.min = 3 + INPUTGAIN_RANGE_SHIFT;
+       uinfo->value.integer.max = 28 + INPUTGAIN_RANGE_SHIFT;
+       return 0;
+}
+
+static int onyx_snd_inputgain_get(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_value *ucontrol)
+{
+       struct onyx *onyx = snd_kcontrol_chip(kcontrol);
+       u8 ig;
+
+       mutex_lock(&onyx->mutex);
+       onyx_read_register(onyx, ONYX_REG_ADC_CONTROL, &ig);
+       mutex_unlock(&onyx->mutex);
+
+       ucontrol->value.integer.value[0] =
+               (ig & ONYX_ADC_PGA_GAIN_MASK) + INPUTGAIN_RANGE_SHIFT;
+
+       return 0;
+}
+
+static int onyx_snd_inputgain_put(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_value *ucontrol)
+{
+       struct onyx *onyx = snd_kcontrol_chip(kcontrol);
+       u8 v, n;
+
+       mutex_lock(&onyx->mutex);
+       onyx_read_register(onyx, ONYX_REG_ADC_CONTROL, &v);
+       n = v;
+       n &= ~ONYX_ADC_PGA_GAIN_MASK;
+       n |= (ucontrol->value.integer.value[0] - INPUTGAIN_RANGE_SHIFT)
+               & ONYX_ADC_PGA_GAIN_MASK;
+       onyx_write_register(onyx, ONYX_REG_ADC_CONTROL, n);
+       mutex_unlock(&onyx->mutex);
+
+       return n != v;
+}
+
+static struct snd_kcontrol_new inputgain_control = {
+       .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+       .name = "Master Capture Volume",
+       .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+       .info = onyx_snd_inputgain_info,
+       .get = onyx_snd_inputgain_get,
+       .put = onyx_snd_inputgain_put,
+};
+
+static int onyx_snd_capture_source_info(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_info *uinfo)
+{
+       static char *texts[] = { "Line-In", "Microphone" };
+
+       uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+       uinfo->count = 1;
+       uinfo->value.enumerated.items = 2;
+       if (uinfo->value.enumerated.item > 1)
+               uinfo->value.enumerated.item = 1;
+       strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
+       return 0;
+}
+
+static int onyx_snd_capture_source_get(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_value *ucontrol)
+{
+       struct onyx *onyx = snd_kcontrol_chip(kcontrol);
+       s8 v;
+
+       mutex_lock(&onyx->mutex);
+       onyx_read_register(onyx, ONYX_REG_ADC_CONTROL, &v);
+       mutex_unlock(&onyx->mutex);
+
+       ucontrol->value.enumerated.item[0] = !!(v&ONYX_ADC_INPUT_MIC);
+
+       return 0;
+}
+
+static void onyx_set_capture_source(struct onyx *onyx, int mic)
+{
+       s8 v;
+
+       mutex_lock(&onyx->mutex);
+       onyx_read_register(onyx, ONYX_REG_ADC_CONTROL, &v);
+       v &= ~ONYX_ADC_INPUT_MIC;
+       if (mic)
+               v |= ONYX_ADC_INPUT_MIC;
+       onyx_write_register(onyx, ONYX_REG_ADC_CONTROL, v);
+       mutex_unlock(&onyx->mutex);
+}
+
+static int onyx_snd_capture_source_put(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_value *ucontrol)
+{
+       onyx_set_capture_source(snd_kcontrol_chip(kcontrol),
+                               ucontrol->value.enumerated.item[0]);
+       return 1;
+}
+
+static struct snd_kcontrol_new capture_source_control = {
+       .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+       /* If we name this 'Input Source', it properly shows up in
+        * alsamixer as a selection, * but it's shown under the 
+        * 'Playback' category.
+        * If I name it 'Capture Source', it shows up in strange
+        * ways (two bools of which one can be selected at a
+        * time) but at least it's shown in the 'Capture'
+        * category.
+        * I was told that this was due to backward compatibility,
+        * but I don't understand then why the mangling is *not*
+        * done when I name it "Input Source".....
+        */
+       .name = "Capture Source",
+       .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+       .info = onyx_snd_capture_source_info,
+       .get = onyx_snd_capture_source_get,
+       .put = onyx_snd_capture_source_put,
+};
+
+static int onyx_snd_mute_info(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_info *uinfo)
+{
+       uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+       uinfo->count = 2;
+       uinfo->value.integer.min = 0;
+       uinfo->value.integer.max = 1;
+       return 0;
+}
+
+static int onyx_snd_mute_get(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_value *ucontrol)
+{
+       struct onyx *onyx = snd_kcontrol_chip(kcontrol);
+       u8 c;
+
+       mutex_lock(&onyx->mutex);
+       onyx_read_register(onyx, ONYX_REG_DAC_CONTROL, &c);
+       mutex_unlock(&onyx->mutex);
+
+       ucontrol->value.integer.value[0] = !(c & ONYX_MUTE_LEFT);
+       ucontrol->value.integer.value[1] = !(c & ONYX_MUTE_RIGHT);
+
+       return 0;
+}
+
+static int onyx_snd_mute_put(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_value *ucontrol)
+{
+       struct onyx *onyx = snd_kcontrol_chip(kcontrol);
+       u8 v = 0, c = 0;
+       int err = -EBUSY;
+
+       mutex_lock(&onyx->mutex);
+       if (onyx->analog_locked)
+               goto out_unlock;
+
+       onyx_read_register(onyx, ONYX_REG_DAC_CONTROL, &v);
+       c = v;
+       c &= ~(ONYX_MUTE_RIGHT | ONYX_MUTE_LEFT);
+       if (!ucontrol->value.integer.value[0])
+               c |= ONYX_MUTE_LEFT;
+       if (!ucontrol->value.integer.value[1])
+               c |= ONYX_MUTE_RIGHT;
+       err = onyx_write_register(onyx, ONYX_REG_DAC_CONTROL, c);
+
+ out_unlock:
+       mutex_unlock(&onyx->mutex);
+
+       return !err ? (v != c) : err;
+}
+
+static struct snd_kcontrol_new mute_control = {
+       .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+       .name = "Master Playback Switch",
+       .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+       .info = onyx_snd_mute_info,
+       .get = onyx_snd_mute_get,
+       .put = onyx_snd_mute_put,
+};
+
+
+static int onyx_snd_single_bit_info(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_info *uinfo)
+{
+       uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+       uinfo->count = 1;
+       uinfo->value.integer.min = 0;
+       uinfo->value.integer.max = 1;
+       return 0;
+}
+
+#define FLAG_POLARITY_INVERT   1
+#define FLAG_SPDIFLOCK         2
+
+static int onyx_snd_single_bit_get(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_value *ucontrol)
+{
+       struct onyx *onyx = snd_kcontrol_chip(kcontrol);
+       u8 c;
+       long int pv = kcontrol->private_value;
+       u8 polarity = (pv >> 16) & FLAG_POLARITY_INVERT;
+       u8 address = (pv >> 8) & 0xff;
+       u8 mask = pv & 0xff;
+
+       mutex_lock(&onyx->mutex);
+       onyx_read_register(onyx, address, &c);
+       mutex_unlock(&onyx->mutex);
+
+       ucontrol->value.integer.value[0] = !!(c & mask) ^ polarity;
+
+       return 0;
+}
+
+static int onyx_snd_single_bit_put(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_value *ucontrol)
+{
+       struct onyx *onyx = snd_kcontrol_chip(kcontrol);
+       u8 v = 0, c = 0;
+       int err;
+       long int pv = kcontrol->private_value;
+       u8 polarity = (pv >> 16) & FLAG_POLARITY_INVERT;
+       u8 spdiflock = (pv >> 16) & FLAG_SPDIFLOCK;
+       u8 address = (pv >> 8) & 0xff;
+       u8 mask = pv & 0xff;
+
+       mutex_lock(&onyx->mutex);
+       if (spdiflock && onyx->spdif_locked) {
+               /* even if alsamixer doesn't care.. */
+               err = -EBUSY;
+               goto out_unlock;
+       }
+       onyx_read_register(onyx, address, &v);
+       c = v;
+       c &= ~(mask);
+       if (!!ucontrol->value.integer.value[0] ^ polarity)
+               c |= mask;
+       err = onyx_write_register(onyx, address, c);
+
+ out_unlock:
+       mutex_unlock(&onyx->mutex);
+
+       return !err ? (v != c) : err;
+}
+
+#define SINGLE_BIT(n, type, description, address, mask, flags)         \
+static struct snd_kcontrol_new n##_control = {                         \
+       .iface = SNDRV_CTL_ELEM_IFACE_##type,                           \
+       .name = description,                                            \
+       .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,                      \
+       .info = onyx_snd_single_bit_info,                               \
+       .get = onyx_snd_single_bit_get,                                 \
+       .put = onyx_snd_single_bit_put,                                 \
+       .private_value = (flags << 16) | (address << 8) | mask          \
+}
+
+SINGLE_BIT(spdif,
+          MIXER,
+          SNDRV_CTL_NAME_IEC958("", PLAYBACK, SWITCH),
+          ONYX_REG_DIG_INFO4,
+          ONYX_SPDIF_ENABLE,
+          FLAG_SPDIFLOCK);
+SINGLE_BIT(ovr1,
+          MIXER,
+          "Oversampling Rate",
+          ONYX_REG_DAC_CONTROL,
+          ONYX_OVR1,
+          0);
+SINGLE_BIT(flt0,
+          MIXER,
+          "Fast Digital Filter Rolloff",
+          ONYX_REG_DAC_FILTER,
+          ONYX_ROLLOFF_FAST,
+          FLAG_POLARITY_INVERT);
+SINGLE_BIT(hpf,
+          MIXER,
+          "Highpass Filter",
+          ONYX_REG_ADC_HPF_BYPASS,
+          ONYX_HPF_DISABLE,
+          FLAG_POLARITY_INVERT);
+SINGLE_BIT(dm12,
+          MIXER,
+          "Digital De-Emphasis",
+          ONYX_REG_DAC_DEEMPH,
+          ONYX_DIGDEEMPH_CTRL,
+          0);
+
+static int onyx_spdif_info(struct snd_kcontrol *kcontrol,
+                          struct snd_ctl_elem_info *uinfo)
+{
+       uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
+       uinfo->count = 1;
+       return 0;
+}
+
+static int onyx_spdif_mask_get(struct snd_kcontrol *kcontrol,
+                              struct snd_ctl_elem_value *ucontrol)
+{
+       /* datasheet page 30, all others are 0 */
+       ucontrol->value.iec958.status[0] = 0x3e;
+       ucontrol->value.iec958.status[1] = 0xff;
+
+       ucontrol->value.iec958.status[3] = 0x3f;
+       ucontrol->value.iec958.status[4] = 0x0f;
+       
+       return 0;
+}
+
+static struct snd_kcontrol_new onyx_spdif_mask = {
+       .access =       SNDRV_CTL_ELEM_ACCESS_READ,
+       .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
+       .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK),
+       .info =         onyx_spdif_info,
+       .get =          onyx_spdif_mask_get,
+};
+
+static int onyx_spdif_get(struct snd_kcontrol *kcontrol,
+                         struct snd_ctl_elem_value *ucontrol)
+{
+       struct onyx *onyx = snd_kcontrol_chip(kcontrol);
+       u8 v;
+
+       mutex_lock(&onyx->mutex);
+       onyx_read_register(onyx, ONYX_REG_DIG_INFO1, &v);
+       ucontrol->value.iec958.status[0] = v & 0x3e;
+
+       onyx_read_register(onyx, ONYX_REG_DIG_INFO2, &v);
+       ucontrol->value.iec958.status[1] = v;
+
+       onyx_read_register(onyx, ONYX_REG_DIG_INFO3, &v);
+       ucontrol->value.iec958.status[3] = v & 0x3f;
+
+       onyx_read_register(onyx, ONYX_REG_DIG_INFO4, &v);
+       ucontrol->value.iec958.status[4] = v & 0x0f;
+       mutex_unlock(&onyx->mutex);
+
+       return 0;
+}
+
+static int onyx_spdif_put(struct snd_kcontrol *kcontrol,
+                         struct snd_ctl_elem_value *ucontrol)
+{
+       struct onyx *onyx = snd_kcontrol_chip(kcontrol);
+       u8 v;
+
+       mutex_lock(&onyx->mutex);
+       onyx_read_register(onyx, ONYX_REG_DIG_INFO1, &v);
+       v = (v & ~0x3e) | (ucontrol->value.iec958.status[0] & 0x3e);
+       onyx_write_register(onyx, ONYX_REG_DIG_INFO1, v);
+
+       v = ucontrol->value.iec958.status[1];
+       onyx_write_register(onyx, ONYX_REG_DIG_INFO2, v);
+
+       onyx_read_register(onyx, ONYX_REG_DIG_INFO3, &v);
+       v = (v & ~0x3f) | (ucontrol->value.iec958.status[3] & 0x3f);
+       onyx_write_register(onyx, ONYX_REG_DIG_INFO3, v);
+
+       onyx_read_register(onyx, ONYX_REG_DIG_INFO4, &v);
+       v = (v & ~0x0f) | (ucontrol->value.iec958.status[4] & 0x0f);
+       onyx_write_register(onyx, ONYX_REG_DIG_INFO4, v);
+       mutex_unlock(&onyx->mutex);
+
+       return 1;
+}
+
+static struct snd_kcontrol_new onyx_spdif_ctrl = {
+       .access =       SNDRV_CTL_ELEM_ACCESS_READWRITE,
+       .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
+       .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
+       .info =         onyx_spdif_info,
+       .get =          onyx_spdif_get,
+       .put =          onyx_spdif_put,
+};
+
+/* our registers */
+
+static u8 register_map[] = {
+       ONYX_REG_DAC_ATTEN_LEFT,
+       ONYX_REG_DAC_ATTEN_RIGHT,
+       ONYX_REG_CONTROL,
+       ONYX_REG_DAC_CONTROL,
+       ONYX_REG_DAC_DEEMPH,
+       ONYX_REG_DAC_FILTER,
+       ONYX_REG_DAC_OUTPHASE,
+       ONYX_REG_ADC_CONTROL,
+       ONYX_REG_ADC_HPF_BYPASS,
+       ONYX_REG_DIG_INFO1,
+       ONYX_REG_DIG_INFO2,
+       ONYX_REG_DIG_INFO3,
+       ONYX_REG_DIG_INFO4
+};
+
+static u8 initial_values[ARRAY_SIZE(register_map)] = {
+       0x80, 0x80, /* muted */
+       ONYX_MRST | ONYX_SRST, /* but handled specially! */
+       ONYX_MUTE_LEFT | ONYX_MUTE_RIGHT,
+       0, /* no deemphasis */
+       ONYX_DAC_FILTER_ALWAYS,
+       ONYX_OUTPHASE_INVERTED,
+       (-1 /*dB*/ + 8) & 0xF, /* line in selected, -1 dB gain*/
+       ONYX_ADC_HPF_ALWAYS,
+       (1<<2), /* pcm audio */
+       2,      /* category: pcm coder */
+       0,      /* sampling frequency 44.1 kHz, clock accuracy level II */
+       1       /* 24 bit depth */
+};
+
+/* reset registers of chip, either to initial or to previous values */
+static int onyx_register_init(struct onyx *onyx)
+{
+       int i;
+       u8 val;
+       u8 regs[sizeof(initial_values)];
+
+       if (!onyx->initialised) {
+               memcpy(regs, initial_values, sizeof(initial_values));
+               if (onyx_read_register(onyx, ONYX_REG_CONTROL, &val))
+                       return -1;
+               val &= ~ONYX_SILICONVERSION;
+               val |= initial_values[3];
+               regs[3] = val;
+       } else {
+               for (i=0; i<sizeof(register_map); i++)
+                       regs[i] = onyx->cache[register_map[i]-FIRSTREGISTER];
+       }
+
+       for (i=0; i<sizeof(register_map); i++) {
+               if (onyx_write_register(onyx, register_map[i], regs[i]))
+                       return -1;
+       }
+       onyx->initialised = 1;
+       return 0;
+}
+
+static struct transfer_info onyx_transfers[] = {
+       /* this is first so we can skip it if no input is present...
+        * No hardware exists with that, but it's here as an example
+        * of what to do :) */
+       {
+               /* analog input */
+               .formats = SNDRV_PCM_FMTBIT_S8 |
+                          SNDRV_PCM_FMTBIT_S16_BE |
+                          SNDRV_PCM_FMTBIT_S24_BE,
+               .rates = SNDRV_PCM_RATE_8000_96000,
+               .transfer_in = 1,
+               .must_be_clock_source = 0,
+               .tag = 0,
+       },
+       {
+               /* if analog and digital are currently off, anything should go,
+                * so this entry describes everything we can do... */
+               .formats = SNDRV_PCM_FMTBIT_S8 |
+                          SNDRV_PCM_FMTBIT_S16_BE |
+                          SNDRV_PCM_FMTBIT_S24_BE
+#ifdef SNDRV_PCM_FMTBIT_COMPRESSED_16BE
+                          | SNDRV_PCM_FMTBIT_COMPRESSED_16BE
+#endif
+               ,
+               .rates = SNDRV_PCM_RATE_8000_96000,
+               .tag = 0,
+       },
+       {
+               /* analog output */
+               .formats = SNDRV_PCM_FMTBIT_S8 |
+                          SNDRV_PCM_FMTBIT_S16_BE |
+                          SNDRV_PCM_FMTBIT_S24_BE,
+               .rates = SNDRV_PCM_RATE_8000_96000,
+               .transfer_in = 0,
+               .must_be_clock_source = 0,
+               .tag = 1,
+       },
+       {
+               /* digital pcm output, also possible for analog out */
+               .formats = SNDRV_PCM_FMTBIT_S8 |
+                          SNDRV_PCM_FMTBIT_S16_BE |
+                          SNDRV_PCM_FMTBIT_S24_BE,
+               .rates = SNDRV_PCM_RATE_32000 |
+                        SNDRV_PCM_RATE_44100 |
+                        SNDRV_PCM_RATE_48000,
+               .transfer_in = 0,
+               .must_be_clock_source = 0,
+               .tag = 2,
+       },
+#ifdef SNDRV_PCM_FMTBIT_COMPRESSED_16BE
+Once alsa gets supports for this kind of thing we can add it...
+       {
+               /* digital compressed output */
+               .formats =  SNDRV_PCM_FMTBIT_COMPRESSED_16BE,
+               .rates = SNDRV_PCM_RATE_32000 |
+                        SNDRV_PCM_RATE_44100 |
+                        SNDRV_PCM_RATE_48000,
+               .tag = 2,
+       },
+#endif
+       {}
+};
+
+static int onyx_usable(struct codec_info_item *cii,
+                      struct transfer_info *ti,
+                      struct transfer_info *out)
+{
+       u8 v;
+       struct onyx *onyx = cii->codec_data;
+       int spdif_enabled, analog_enabled;
+
+       mutex_lock(&onyx->mutex);
+       onyx_read_register(onyx, ONYX_REG_DIG_INFO4, &v);
+       spdif_enabled = !!(v & ONYX_SPDIF_ENABLE);
+       onyx_read_register(onyx, ONYX_REG_DAC_CONTROL, &v);
+       analog_enabled = 
+               (v & (ONYX_MUTE_RIGHT|ONYX_MUTE_LEFT))
+                != (ONYX_MUTE_RIGHT|ONYX_MUTE_LEFT);
+       mutex_unlock(&onyx->mutex);
+
+       switch (ti->tag) {
+       case 0: return 1;
+       case 1: return analog_enabled;
+       case 2: return spdif_enabled;
+       }
+       return 1;
+}
+
+static int onyx_prepare(struct codec_info_item *cii,
+                       struct bus_info *bi,
+                       struct snd_pcm_substream *substream)
+{
+       u8 v;
+       struct onyx *onyx = cii->codec_data;
+       int err = -EBUSY;
+
+       mutex_lock(&onyx->mutex);
+
+#ifdef SNDRV_PCM_FMTBIT_COMPRESSED_16BE
+       if (substream->runtime->format == SNDRV_PCM_FMTBIT_COMPRESSED_16BE) {
+               /* mute and lock analog output */
+               onyx_read_register(onyx, ONYX_REG_DAC_CONTROL, &v);
+               if (onyx_write_register(onyx
+                                       ONYX_REG_DAC_CONTROL,
+                                       v | ONYX_MUTE_RIGHT | ONYX_MUTE_LEFT))
+                       goto out_unlock;
+               onyx->analog_locked = 1;
+               err = 0;
+               goto out_unlock;
+       }
+#endif
+       switch (substream->runtime->rate) {
+       case 32000:
+       case 44100:
+       case 48000:
+               /* these rates are ok for all outputs */
+               /* FIXME: program spdif channel control bits here so that
+                *        userspace doesn't have to if it only plays pcm! */
+               err = 0;
+               goto out_unlock;
+       default:
+               /* got some rate that the digital output can't do,
+                * so disable and lock it */
+               onyx_read_register(cii->codec_data, ONYX_REG_DIG_INFO4, &v);
+               if (onyx_write_register(onyx,
+                                       ONYX_REG_DIG_INFO4,
+                                       v & ~ONYX_SPDIF_ENABLE))
+                       goto out_unlock;
+               onyx->spdif_locked = 1;
+               err = 0;
+               goto out_unlock;
+       }
+
+ out_unlock:
+       mutex_unlock(&onyx->mutex);
+
+       return err;
+}
+
+static int onyx_open(struct codec_info_item *cii,
+                    struct snd_pcm_substream *substream)
+{
+       struct onyx *onyx = cii->codec_data;
+
+       mutex_lock(&onyx->mutex);
+       onyx->open_count++;
+       mutex_unlock(&onyx->mutex);
+
+       return 0;
+}
+
+static int onyx_close(struct codec_info_item *cii,
+                     struct snd_pcm_substream *substream)
+{
+       struct onyx *onyx = cii->codec_data;
+
+       mutex_lock(&onyx->mutex);
+       onyx->open_count--;
+       if (!onyx->open_count)
+               onyx->spdif_locked = onyx->analog_locked = 0;
+       mutex_unlock(&onyx->mutex);
+
+       return 0;
+}
+
+static int onyx_switch_clock(struct codec_info_item *cii,
+                            enum clock_switch what)
+{
+       struct onyx *onyx = cii->codec_data;
+
+       mutex_lock(&onyx->mutex);
+       /* this *MUST* be more elaborate later... */
+       switch (what) {
+       case CLOCK_SWITCH_PREPARE_SLAVE:
+               onyx->codec.gpio->methods->all_amps_off(onyx->codec.gpio);
+               break;
+       case CLOCK_SWITCH_SLAVE:
+               onyx->codec.gpio->methods->all_amps_restore(onyx->codec.gpio);
+               break;
+       default: /* silence warning */
+               break;
+       }
+       mutex_unlock(&onyx->mutex);
+
+       return 0;
+}
+
+#ifdef CONFIG_PM
+
+static int onyx_suspend(struct codec_info_item *cii, pm_message_t state)
+{
+       struct onyx *onyx = cii->codec_data;
+       u8 v;
+       int err = -ENXIO;
+
+       mutex_lock(&onyx->mutex);
+       if (onyx_read_register(onyx, ONYX_REG_CONTROL, &v))
+               goto out_unlock;
+       onyx_write_register(onyx, ONYX_REG_CONTROL, v | ONYX_ADPSV | ONYX_DAPSV);
+       /* Apple does a sleep here but the datasheet says to do it on resume */
+       err = 0;
+ out_unlock:
+       mutex_unlock(&onyx->mutex);
+
+       return err;
+}
+
+static int onyx_resume(struct codec_info_item *cii)
+{
+       struct onyx *onyx = cii->codec_data;
+       u8 v;
+       int err = -ENXIO;
+
+       mutex_lock(&onyx->mutex);
+       /* take codec out of suspend */
+       if (onyx_read_register(onyx, ONYX_REG_CONTROL, &v))
+               goto out_unlock;
+       onyx_write_register(onyx, ONYX_REG_CONTROL, v & ~(ONYX_ADPSV | ONYX_DAPSV));
+       /* FIXME: should divide by sample rate, but 8k is the lowest we go */
+       msleep(2205000/8000);
+       /* reset all values */
+       onyx_register_init(onyx);
+       err = 0;
+ out_unlock:
+       mutex_unlock(&onyx->mutex);
+
+       return err;
+}
+
+#endif /* CONFIG_PM */
+
+static struct codec_info onyx_codec_info = {
+       .transfers = onyx_transfers,
+       .sysclock_factor = 256,
+       .bus_factor = 64,
+       .owner = THIS_MODULE,
+       .usable = onyx_usable,
+       .prepare = onyx_prepare,
+       .open = onyx_open,
+       .close = onyx_close,
+       .switch_clock = onyx_switch_clock,
+#ifdef CONFIG_PM
+       .suspend = onyx_suspend,
+       .resume = onyx_resume,
+#endif
+};
+
+static int onyx_init_codec(struct aoa_codec *codec)
+{
+       struct onyx *onyx = codec_to_onyx(codec);
+       struct snd_kcontrol *ctl;
+       struct codec_info *ci = &onyx_codec_info;
+       u8 v;
+       int err;
+
+       if (!onyx->codec.gpio || !onyx->codec.gpio->methods) {
+               printk(KERN_ERR PFX "gpios not assigned!!\n");
+               return -EINVAL;
+       }
+
+       onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 0);
+       msleep(1);
+       onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 1);
+       msleep(1);
+       onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 0);
+       msleep(1);
+       
+       if (onyx_register_init(onyx)) {
+               printk(KERN_ERR PFX "failed to initialise onyx registers\n");
+               return -ENODEV;
+       }
+
+       if (aoa_snd_device_new(SNDRV_DEV_LOWLEVEL, onyx, &ops)) {
+               printk(KERN_ERR PFX "failed to create onyx snd device!\n");
+               return -ENODEV;
+       }
+
+       /* nothing connected? what a joke! */
+       if ((onyx->codec.connected & 0xF) == 0)
+               return -ENOTCONN;
+
+       /* if no inputs are present... */
+       if ((onyx->codec.connected & 0xC) == 0) {
+               if (!onyx->codec_info)
+                       onyx->codec_info = kmalloc(sizeof(struct codec_info), GFP_KERNEL);
+               if (!onyx->codec_info)
+                       return -ENOMEM;
+               ci = onyx->codec_info;
+               *ci = onyx_codec_info;
+               ci->transfers++;
+       }
+
+       /* if no outputs are present... */
+       if ((onyx->codec.connected & 3) == 0) {
+               if (!onyx->codec_info)
+                       onyx->codec_info = kmalloc(sizeof(struct codec_info), GFP_KERNEL);
+               if (!onyx->codec_info)
+                       return -ENOMEM;
+               ci = onyx->codec_info;
+               /* this is fine as there have to be inputs
+                * if we end up in this part of the code */
+               *ci = onyx_codec_info;
+               ci->transfers[1].formats = 0;
+       }
+
+       if (onyx->codec.soundbus_dev->attach_codec(onyx->codec.soundbus_dev,
+                                                  aoa_get_card(),
+                                                  ci, onyx)) {
+               printk(KERN_ERR PFX "error creating onyx pcm\n");
+               return -ENODEV;
+       }
+#define ADDCTL(n)                                                      \
+       do {                                                            \
+               ctl = snd_ctl_new1(&n, onyx);                           \
+               if (ctl) {                                              \
+                       ctl->id.device =                                \
+                               onyx->codec.soundbus_dev->pcm->device;  \
+                       err = aoa_snd_ctl_add(ctl);                     \
+                       if (err)                                        \
+                               goto error;                             \
+               }                                                       \
+       } while (0)
+
+       if (onyx->codec.soundbus_dev->pcm) {
+               /* give the user appropriate controls
+                * depending on what inputs are connected */
+               if ((onyx->codec.connected & 0xC) == 0xC)
+                       ADDCTL(capture_source_control);
+               else if (onyx->codec.connected & 4)
+                       onyx_set_capture_source(onyx, 0);
+               else
+                       onyx_set_capture_source(onyx, 1);
+               if (onyx->codec.connected & 0xC)
+                       ADDCTL(inputgain_control);
+
+               /* depending on what output is connected,
+                * give the user appropriate controls */
+               if (onyx->codec.connected & 1) {
+                       ADDCTL(volume_control);
+                       ADDCTL(mute_control);
+                       ADDCTL(ovr1_control);
+                       ADDCTL(flt0_control);
+                       ADDCTL(hpf_control);
+                       ADDCTL(dm12_control);
+                       /* spdif control defaults to off */
+               }
+               if (onyx->codec.connected & 2) {
+                       ADDCTL(onyx_spdif_mask);
+                       ADDCTL(onyx_spdif_ctrl);
+               }
+               if ((onyx->codec.connected & 3) == 3)
+                       ADDCTL(spdif_control);
+               /* if only S/PDIF is connected, enable it unconditionally */
+               if ((onyx->codec.connected & 3) == 2) {
+                       onyx_read_register(onyx, ONYX_REG_DIG_INFO4, &v);
+                       v |= ONYX_SPDIF_ENABLE;
+                       onyx_write_register(onyx, ONYX_REG_DIG_INFO4, v);
+               }
+       }
+#undef ADDCTL
+       printk(KERN_INFO PFX "attached to onyx codec via i2c\n");
+
+       return 0;
+ error:
+       onyx->codec.soundbus_dev->detach_codec(onyx->codec.soundbus_dev, onyx);
+       snd_device_free(aoa_get_card(), onyx);
+       return err;
+}
+
+static void onyx_exit_codec(struct aoa_codec *codec)
+{
+       struct onyx *onyx = codec_to_onyx(codec);
+
+       if (!onyx->codec.soundbus_dev) {
+               printk(KERN_ERR PFX "onyx_exit_codec called without soundbus_dev!\n");
+               return;
+       }
+       onyx->codec.soundbus_dev->detach_codec(onyx->codec.soundbus_dev, onyx);
+}
+
+static struct i2c_driver onyx_driver;
+
+static int onyx_create(struct i2c_adapter *adapter,
+                      struct device_node *node,
+                      int addr)
+{
+       struct onyx *onyx;
+       u8 dummy;
+
+       onyx = kzalloc(sizeof(struct onyx), GFP_KERNEL);
+
+       if (!onyx)
+               return -ENOMEM;
+
+       mutex_init(&onyx->mutex);
+       onyx->i2c.driver = &onyx_driver;
+       onyx->i2c.adapter = adapter;
+       onyx->i2c.addr = addr & 0x7f;
+       strlcpy(onyx->i2c.name, "onyx audio codec", I2C_NAME_SIZE-1);
+
+       if (i2c_attach_client(&onyx->i2c)) {
+               printk(KERN_ERR PFX "failed to attach to i2c\n");
+               goto fail;
+       }
+
+       /* we try to read from register ONYX_REG_CONTROL
+        * to check if the codec is present */
+       if (onyx_read_register(onyx, ONYX_REG_CONTROL, &dummy) != 0) {
+               i2c_detach_client(&onyx->i2c);
+               printk(KERN_ERR PFX "failed to read control register\n");
+               goto fail;
+       }
+
+       strlcpy(onyx->codec.name, "onyx", MAX_CODEC_NAME_LEN-1);
+       onyx->codec.owner = THIS_MODULE;
+       onyx->codec.init = onyx_init_codec;
+       onyx->codec.exit = onyx_exit_codec;
+       onyx->codec.node = of_node_get(node);
+
+       if (aoa_codec_register(&onyx->codec)) {
+               i2c_detach_client(&onyx->i2c);
+               goto fail;
+       }
+       printk(KERN_DEBUG PFX "created and attached onyx instance\n");
+       return 0;
+ fail:
+       kfree(onyx);
+       return -EINVAL;
+}
+
+static int onyx_i2c_attach(struct i2c_adapter *adapter)
+{
+       struct device_node *busnode, *dev = NULL;
+       struct pmac_i2c_bus *bus;
+
+       bus = pmac_i2c_adapter_to_bus(adapter);
+       if (bus == NULL)
+               return -ENODEV;
+       busnode = pmac_i2c_get_bus_node(bus);
+
+       while ((dev = of_get_next_child(busnode, dev)) != NULL) {
+               if (device_is_compatible(dev, "pcm3052")) {
+                       u32 *addr;
+                       printk(KERN_DEBUG PFX "found pcm3052\n");
+                       addr = (u32 *) get_property(dev, "reg", NULL);
+                       if (!addr)
+                               return -ENODEV;
+                       return onyx_create(adapter, dev, (*addr)>>1);
+               }
+       }
+
+       /* if that didn't work, try desperate mode for older
+        * machines that have stuff missing from the device tree */
+       
+       if (!device_is_compatible(busnode, "k2-i2c"))
+               return -ENODEV;
+
+       printk(KERN_DEBUG PFX "found k2-i2c, checking if onyx chip is on it\n");
+       /* probe both possible addresses for the onyx chip */
+       if (onyx_create(adapter, NULL, 0x46) == 0)
+               return 0;
+       return onyx_create(adapter, NULL, 0x47);
+}
+
+static int onyx_i2c_detach(struct i2c_client *client)
+{
+       struct onyx *onyx = container_of(client, struct onyx, i2c);
+       int err;
+
+       if ((err = i2c_detach_client(client)))
+               return err;
+       aoa_codec_unregister(&onyx->codec);
+       of_node_put(onyx->codec.node);
+       if (onyx->codec_info)
+               kfree(onyx->codec_info);
+       kfree(onyx);
+       return 0;
+}
+
+static struct i2c_driver onyx_driver = {
+       .driver = {
+               .name = "aoa_codec_onyx",
+               .owner = THIS_MODULE,
+       },
+       .attach_adapter = onyx_i2c_attach,
+       .detach_client = onyx_i2c_detach,
+};
+
+static int __init onyx_init(void)
+{
+       return i2c_add_driver(&onyx_driver);
+}
+
+static void __exit onyx_exit(void)
+{
+       i2c_del_driver(&onyx_driver);
+}
+
+module_init(onyx_init);
+module_exit(onyx_exit);
diff --git a/sound/aoa/codecs/snd-aoa-codec-onyx.h b/sound/aoa/codecs/snd-aoa-codec-onyx.h
new file mode 100644 (file)
index 0000000..aeedda7
--- /dev/null
@@ -0,0 +1,76 @@
+/*
+ * Apple Onboard Audio driver for Onyx codec (header)
+ *
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * GPL v2, can be found in COPYING.
+ */
+#ifndef __SND_AOA_CODEC_ONYX_H
+#define __SND_AOA_CODEC_ONYX_H
+#include <stddef.h>
+#include <linux/i2c.h>
+#include <linux/i2c-dev.h>
+#include <asm/pmac_low_i2c.h>
+#include <asm/prom.h>
+
+/* PCM3052 register definitions */
+
+/* the attenuation registers take values from
+ * -1 (0dB) to -127 (-63.0 dB) or others (muted) */
+#define ONYX_REG_DAC_ATTEN_LEFT                65
+#define FIRSTREGISTER                  ONYX_REG_DAC_ATTEN_LEFT
+#define ONYX_REG_DAC_ATTEN_RIGHT       66
+
+#define ONYX_REG_CONTROL               67
+#      define ONYX_MRST                (1<<7)
+#      define ONYX_SRST                (1<<6)
+#      define ONYX_ADPSV               (1<<5)
+#      define ONYX_DAPSV               (1<<4)
+#      define ONYX_SILICONVERSION      (1<<0)
+/* all others reserved */
+
+#define ONYX_REG_DAC_CONTROL           68
+#      define ONYX_OVR1                (1<<6)
+#      define ONYX_MUTE_RIGHT          (1<<1)
+#      define ONYX_MUTE_LEFT           (1<<0)
+
+#define ONYX_REG_DAC_DEEMPH            69
+#      define ONYX_DIGDEEMPH_SHIFT     5
+#      define ONYX_DIGDEEMPH_MASK      (3<<ONYX_DIGDEEMPH_SHIFT)
+#      define ONYX_DIGDEEMPH_CTRL      (1<<4)
+
+#define ONYX_REG_DAC_FILTER            70
+#      define ONYX_ROLLOFF_FAST        (1<<5)
+#      define ONYX_DAC_FILTER_ALWAYS   (1<<2)
+
+#define        ONYX_REG_DAC_OUTPHASE           71
+#      define ONYX_OUTPHASE_INVERTED   (1<<0)
+
+#define ONYX_REG_ADC_CONTROL           72
+#      define ONYX_ADC_INPUT_MIC       (1<<5)
+/* 8 + input gain in dB, valid range for input gain is -4 .. 20 dB */
+#      define ONYX_ADC_PGA_GAIN_MASK   0x1f
+
+#define ONYX_REG_ADC_HPF_BYPASS                75
+#      define ONYX_HPF_DISABLE         (1<<3)
+#      define ONYX_ADC_HPF_ALWAYS      (1<<2)
+
+#define ONYX_REG_DIG_INFO1             77
+#      define ONYX_MASK_DIN_TO_BPZ     (1<<7)
+/* bits 1-5 control channel bits 1-5 */
+#      define ONYX_DIGOUT_DISABLE      (1<<0)
+
+#define ONYX_REG_DIG_INFO2             78
+/* controls channel bits 8-15 */
+
+#define ONYX_REG_DIG_INFO3             79
+/* control channel bits 24-29, high 2 bits reserved */
+
+#define ONYX_REG_DIG_INFO4             80
+#      define ONYX_VALIDL              (1<<7)
+#      define ONYX_VALIDR              (1<<6)
+#      define ONYX_SPDIF_ENABLE        (1<<5)
+/* lower 4 bits control bits 32-35 of channel control and word length */
+#      define ONYX_WORDLEN_MASK        (0xF)
+
+#endif /* __SND_AOA_CODEC_ONYX_H */
diff --git a/sound/aoa/codecs/snd-aoa-codec-tas-gain-table.h b/sound/aoa/codecs/snd-aoa-codec-tas-gain-table.h
new file mode 100644 (file)
index 0000000..4cfa675
--- /dev/null
@@ -0,0 +1,209 @@
+/*
+ This is the program used to generate below table.
+
+#include <stdio.h>
+#include <math.h>
+int main() {
+  int dB2;
+  printf("/" "* This file is only included exactly once!\n");
+  printf(" *\n");
+  printf(" * If they'd only tell us that generating this table was\n");
+  printf(" * as easy as calculating\n");
+  printf(" *      hwvalue = 1048576.0*exp(0.057564628*dB*2)\n");
+  printf(" * :) *" "/\n");
+  printf("static int tas_gaintable[] = {\n");
+  printf("     0x000000, /" "* -infinity dB *" "/\n");
+  for (dB2=-140;dB2<=36;dB2++)
+    printf("   0x%.6x, /" "* %-02.1f dB *" "/\n", (int)(1048576.0*exp(0.057564628*dB2)), dB2/2.0);
+  printf("};\n\n");
+}
+
+*/
+
+/* This file is only included exactly once!
+ *
+ * If they'd only tell us that generating this table was
+ * as easy as calculating
+ *      hwvalue = 1048576.0*exp(0.057564628*dB*2)
+ * :) */
+static int tas_gaintable[] = {
+       0x000000, /* -infinity dB */
+       0x00014b, /* -70.0 dB */
+       0x00015f, /* -69.5 dB */
+       0x000174, /* -69.0 dB */
+       0x00018a, /* -68.5 dB */
+       0x0001a1, /* -68.0 dB */
+       0x0001ba, /* -67.5 dB */
+       0x0001d4, /* -67.0 dB */
+       0x0001f0, /* -66.5 dB */
+       0x00020d, /* -66.0 dB */
+       0x00022c, /* -65.5 dB */
+       0x00024d, /* -65.0 dB */
+       0x000270, /* -64.5 dB */
+       0x000295, /* -64.0 dB */
+       0x0002bc, /* -63.5 dB */
+       0x0002e6, /* -63.0 dB */
+       0x000312, /* -62.5 dB */
+       0x000340, /* -62.0 dB */
+       0x000372, /* -61.5 dB */
+       0x0003a6, /* -61.0 dB */
+       0x0003dd, /* -60.5 dB */
+       0x000418, /* -60.0 dB */
+       0x000456, /* -59.5 dB */
+       0x000498, /* -59.0 dB */
+       0x0004de, /* -58.5 dB */
+       0x000528, /* -58.0 dB */
+       0x000576, /* -57.5 dB */
+       0x0005c9, /* -57.0 dB */
+       0x000620, /* -56.5 dB */
+       0x00067d, /* -56.0 dB */
+       0x0006e0, /* -55.5 dB */
+       0x000748, /* -55.0 dB */
+       0x0007b7, /* -54.5 dB */
+       0x00082c, /* -54.0 dB */
+       0x0008a8, /* -53.5 dB */
+       0x00092b, /* -53.0 dB */
+       0x0009b6, /* -52.5 dB */
+       0x000a49, /* -52.0 dB */
+       0x000ae5, /* -51.5 dB */
+       0x000b8b, /* -51.0 dB */
+       0x000c3a, /* -50.5 dB */
+       0x000cf3, /* -50.0 dB */
+       0x000db8, /* -49.5 dB */
+       0x000e88, /* -49.0 dB */
+       0x000f64, /* -48.5 dB */
+       0x00104e, /* -48.0 dB */
+       0x001145, /* -47.5 dB */
+       0x00124b, /* -47.0 dB */
+       0x001361, /* -46.5 dB */
+       0x001487, /* -46.0 dB */
+       0x0015be, /* -45.5 dB */
+       0x001708, /* -45.0 dB */
+       0x001865, /* -44.5 dB */
+       0x0019d8, /* -44.0 dB */
+       0x001b60, /* -43.5 dB */
+       0x001cff, /* -43.0 dB */
+       0x001eb7, /* -42.5 dB */
+       0x002089, /* -42.0 dB */
+       0x002276, /* -41.5 dB */
+       0x002481, /* -41.0 dB */
+       0x0026ab, /* -40.5 dB */
+       0x0028f5, /* -40.0 dB */
+       0x002b63, /* -39.5 dB */
+       0x002df5, /* -39.0 dB */
+       0x0030ae, /* -38.5 dB */
+       0x003390, /* -38.0 dB */
+       0x00369e, /* -37.5 dB */
+       0x0039db, /* -37.0 dB */
+       0x003d49, /* -36.5 dB */
+       0x0040ea, /* -36.0 dB */
+       0x0044c3, /* -35.5 dB */
+       0x0048d6, /* -35.0 dB */
+       0x004d27, /* -34.5 dB */
+       0x0051b9, /* -34.0 dB */
+       0x005691, /* -33.5 dB */
+       0x005bb2, /* -33.0 dB */
+       0x006121, /* -32.5 dB */
+       0x0066e3, /* -32.0 dB */
+       0x006cfb, /* -31.5 dB */
+       0x007370, /* -31.0 dB */
+       0x007a48, /* -30.5 dB */
+       0x008186, /* -30.0 dB */
+       0x008933, /* -29.5 dB */
+       0x009154, /* -29.0 dB */
+       0x0099f1, /* -28.5 dB */
+       0x00a310, /* -28.0 dB */
+       0x00acba, /* -27.5 dB */
+       0x00b6f6, /* -27.0 dB */
+       0x00c1cd, /* -26.5 dB */
+       0x00cd49, /* -26.0 dB */
+       0x00d973, /* -25.5 dB */
+       0x00e655, /* -25.0 dB */
+       0x00f3fb, /* -24.5 dB */
+       0x010270, /* -24.0 dB */
+       0x0111c0, /* -23.5 dB */
+       0x0121f9, /* -23.0 dB */
+       0x013328, /* -22.5 dB */
+       0x01455b, /* -22.0 dB */
+       0x0158a2, /* -21.5 dB */
+       0x016d0e, /* -21.0 dB */
+       0x0182af, /* -20.5 dB */
+       0x019999, /* -20.0 dB */
+       0x01b1de, /* -19.5 dB */
+       0x01cb94, /* -19.0 dB */
+       0x01e6cf, /* -18.5 dB */
+       0x0203a7, /* -18.0 dB */
+       0x022235, /* -17.5 dB */
+       0x024293, /* -17.0 dB */
+       0x0264db, /* -16.5 dB */
+       0x02892c, /* -16.0 dB */
+       0x02afa3, /* -15.5 dB */
+       0x02d862, /* -15.0 dB */
+       0x03038a, /* -14.5 dB */
+       0x033142, /* -14.0 dB */
+       0x0361af, /* -13.5 dB */
+       0x0394fa, /* -13.0 dB */
+       0x03cb50, /* -12.5 dB */
+       0x0404de, /* -12.0 dB */
+       0x0441d5, /* -11.5 dB */
+       0x048268, /* -11.0 dB */
+       0x04c6d0, /* -10.5 dB */
+       0x050f44, /* -10.0 dB */
+       0x055c04, /* -9.5 dB */
+       0x05ad50, /* -9.0 dB */
+       0x06036e, /* -8.5 dB */
+       0x065ea5, /* -8.0 dB */
+       0x06bf44, /* -7.5 dB */
+       0x07259d, /* -7.0 dB */
+       0x079207, /* -6.5 dB */
+       0x0804dc, /* -6.0 dB */
+       0x087e80, /* -5.5 dB */
+       0x08ff59, /* -5.0 dB */
+       0x0987d5, /* -4.5 dB */
+       0x0a1866, /* -4.0 dB */
+       0x0ab189, /* -3.5 dB */
+       0x0b53be, /* -3.0 dB */
+       0x0bff91, /* -2.5 dB */
+       0x0cb591, /* -2.0 dB */
+       0x0d765a, /* -1.5 dB */
+       0x0e4290, /* -1.0 dB */
+       0x0f1adf, /* -0.5 dB */
+       0x100000, /* 0.0 dB */
+       0x10f2b4, /* 0.5 dB */
+       0x11f3c9, /* 1.0 dB */
+       0x13041a, /* 1.5 dB */
+       0x14248e, /* 2.0 dB */
+       0x15561a, /* 2.5 dB */
+       0x1699c0, /* 3.0 dB */
+       0x17f094, /* 3.5 dB */
+       0x195bb8, /* 4.0 dB */
+       0x1adc61, /* 4.5 dB */
+       0x1c73d5, /* 5.0 dB */
+       0x1e236d, /* 5.5 dB */
+       0x1fec98, /* 6.0 dB */
+       0x21d0d9, /* 6.5 dB */
+       0x23d1cd, /* 7.0 dB */
+       0x25f125, /* 7.5 dB */
+       0x2830af, /* 8.0 dB */
+       0x2a9254, /* 8.5 dB */
+       0x2d1818, /* 9.0 dB */
+       0x2fc420, /* 9.5 dB */
+       0x3298b0, /* 10.0 dB */
+       0x35982f, /* 10.5 dB */
+       0x38c528, /* 11.0 dB */
+       0x3c224c, /* 11.5 dB */
+       0x3fb278, /* 12.0 dB */
+       0x4378b0, /* 12.5 dB */
+       0x477829, /* 13.0 dB */
+       0x4bb446, /* 13.5 dB */
+       0x5030a1, /* 14.0 dB */
+       0x54f106, /* 14.5 dB */
+       0x59f980, /* 15.0 dB */
+       0x5f4e52, /* 15.5 dB */
+       0x64f403, /* 16.0 dB */
+       0x6aef5e, /* 16.5 dB */
+       0x714575, /* 17.0 dB */
+       0x77fbaa, /* 17.5 dB */
+       0x7f17af, /* 18.0 dB */
+};
+
diff --git a/sound/aoa/codecs/snd-aoa-codec-tas.c b/sound/aoa/codecs/snd-aoa-codec-tas.c
new file mode 100644 (file)
index 0000000..2e39ff6
--- /dev/null
@@ -0,0 +1,654 @@
+/*
+ * Apple Onboard Audio driver for tas codec
+ *
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * GPL v2, can be found in COPYING.
+ *
+ * Open questions:
+ *  - How to distinguish between 3004 and versions?
+ *
+ * FIXMEs:
+ *  - This codec driver doesn't honour the 'connected'
+ *    property of the aoa_codec struct, hence if
+ *    it is used in machines where not everything is
+ *    connected it will display wrong mixer elements.
+ *  - Driver assumes that the microphone is always
+ *    monaureal and connected to the right channel of
+ *    the input. This should also be a codec-dependent
+ *    flag, maybe the codec should have 3 different
+ *    bits for the three different possibilities how
+ *    it can be hooked up...
+ *    But as long as I don't see any hardware hooked
+ *    up that way...
+ *  - As Apple notes in their code, the tas3004 seems
+ *    to delay the right channel by one sample. You can
+ *    see this when for example recording stereo in
+ *    audacity, or recording the tas output via cable
+ *    on another machine (use a sinus generator or so).
+ *    I tried programming the BiQuads but couldn't
+ *    make the delay work, maybe someone can read the
+ *    datasheet and fix it. The relevant Apple comment
+ *    is in AppleTAS3004Audio.cpp lines 1637 ff. Note
+ *    that their comment describing how they program
+ *    the filters sucks...
+ *
+ * Other things:
+ *  - this should actually register *two* aoa_codec
+ *    structs since it has two inputs. Then it must
+ *    use the prepare callback to forbid running the
+ *    secondary output on a different clock.
+ *    Also, whatever bus knows how to do this must
+ *    provide two soundbus_dev devices and the fabric
+ *    must be able to link them correctly.
+ *
+ *    I don't even know if Apple ever uses the second
+ *    port on the tas3004 though, I don't think their
+ *    i2s controllers can even do it. OTOH, they all
+ *    derive the clocks from common clocks, so it
+ *    might just be possible. The framework allows the
+ *    codec to refine the transfer_info items in the
+ *    usable callback, so we can simply remove the
+ *    rates the second instance is not using when it
+ *    actually is in use.
+ *    Maybe we'll need to make the sound busses have
+ *    a 'clock group id' value so the codec can
+ *    determine if the two outputs can be driven at
+ *    the same time. But that is likely overkill, up
+ *    to the fabric to not link them up incorrectly,
+ *    and up to the hardware designer to not wire
+ *    them up in some weird unusable way.
+ */
+#include <stddef.h>
+#include <linux/i2c.h>
+#include <linux/i2c-dev.h>
+#include <asm/pmac_low_i2c.h>
+#include <asm/prom.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("tas codec driver for snd-aoa");
+
+#include "snd-aoa-codec-tas.h"
+#include "snd-aoa-codec-tas-gain-table.h"
+#include "../aoa.h"
+#include "../soundbus/soundbus.h"
+
+
+#define PFX "snd-aoa-codec-tas: "
+
+struct tas {
+       struct aoa_codec        codec;
+       struct i2c_client       i2c;
+       u32                     muted_l:1, muted_r:1,
+                               controls_created:1;
+       u8                      cached_volume_l, cached_volume_r;
+       u8                      mixer_l[3], mixer_r[3];
+       u8                      acr;
+};
+
+static struct tas *codec_to_tas(struct aoa_codec *codec)
+{
+       return container_of(codec, struct tas, codec);
+}
+
+static inline int tas_write_reg(struct tas *tas, u8 reg, u8 len, u8 *data)
+{
+       if (len == 1)
+               return i2c_smbus_write_byte_data(&tas->i2c, reg, *data);
+       else
+               return i2c_smbus_write_i2c_block_data(&tas->i2c, reg, len, data);
+}
+
+static void tas_set_volume(struct tas *tas)
+{
+       u8 block[6];
+       int tmp;
+       u8 left, right;
+
+       left = tas->cached_volume_l;
+       right = tas->cached_volume_r;
+
+       if (left > 177) left = 177;
+       if (right > 177) right = 177;
+
+       if (tas->muted_l) left = 0;
+       if (tas->muted_r) right = 0;
+
+       /* analysing the volume and mixer tables shows
+        * that they are similar enough when we shift
+        * the mixer table down by 4 bits. The error
+        * is miniscule, in just one item the error
+        * is 1, at a value of 0x07f17b (mixer table
+        * value is 0x07f17a) */
+       tmp = tas_gaintable[left];
+       block[0] = tmp>>20;
+       block[1] = tmp>>12;
+       block[2] = tmp>>4;
+       tmp = tas_gaintable[right];
+       block[3] = tmp>>20;
+       block[4] = tmp>>12;
+       block[5] = tmp>>4;
+       tas_write_reg(tas, TAS_REG_VOL, 6, block);
+}
+
+static void tas_set_mixer(struct tas *tas)
+{
+       u8 block[9];
+       int tmp, i;
+       u8 val;
+
+       for (i=0;i<3;i++) {
+               val = tas->mixer_l[i];
+               if (val > 177) val = 177;
+               tmp = tas_gaintable[val];
+               block[3*i+0] = tmp>>16;
+               block[3*i+1] = tmp>>8;
+               block[3*i+2] = tmp;
+       }
+       tas_write_reg(tas, TAS_REG_LMIX, 9, block);
+
+       for (i=0;i<3;i++) {
+               val = tas->mixer_r[i];
+               if (val > 177) val = 177;
+               tmp = tas_gaintable[val];
+               block[3*i+0] = tmp>>16;
+               block[3*i+1] = tmp>>8;
+               block[3*i+2] = tmp;
+       }
+       tas_write_reg(tas, TAS_REG_RMIX, 9, block);
+}
+
+/* alsa stuff */
+
+static int tas_dev_register(struct snd_device *dev)
+{
+       return 0;
+}
+
+static struct snd_device_ops ops = {
+       .dev_register = tas_dev_register,
+};
+
+static int tas_snd_vol_info(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_info *uinfo)
+{
+       uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+       uinfo->count = 2;
+       uinfo->value.integer.min = 0;
+       uinfo->value.integer.max = 177;
+       return 0;
+}
+
+static int tas_snd_vol_get(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_value *ucontrol)
+{
+       struct tas *tas = snd_kcontrol_chip(kcontrol);
+
+       ucontrol->value.integer.value[0] = tas->cached_volume_l;
+       ucontrol->value.integer.value[1] = tas->cached_volume_r;
+       return 0;
+}
+
+static int tas_snd_vol_put(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_value *ucontrol)
+{
+       struct tas *tas = snd_kcontrol_chip(kcontrol);
+
+       if (tas->cached_volume_l == ucontrol->value.integer.value[0]
+        && tas->cached_volume_r == ucontrol->value.integer.value[1])
+               return 0;
+
+       tas->cached_volume_l = ucontrol->value.integer.value[0];
+       tas->cached_volume_r = ucontrol->value.integer.value[1];
+       tas_set_volume(tas);
+       return 1;
+}
+
+static struct snd_kcontrol_new volume_control = {
+       .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+       .name = "Master Playback Volume",
+       .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+       .info = tas_snd_vol_info,
+       .get = tas_snd_vol_get,
+       .put = tas_snd_vol_put,
+};
+
+static int tas_snd_mute_info(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_info *uinfo)
+{
+       uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+       uinfo->count = 2;
+       uinfo->value.integer.min = 0;
+       uinfo->value.integer.max = 1;
+       return 0;
+}
+
+static int tas_snd_mute_get(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_value *ucontrol)
+{
+       struct tas *tas = snd_kcontrol_chip(kcontrol);
+
+       ucontrol->value.integer.value[0] = !tas->muted_l;
+       ucontrol->value.integer.value[1] = !tas->muted_r;
+       return 0;
+}
+
+static int tas_snd_mute_put(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_value *ucontrol)
+{
+       struct tas *tas = snd_kcontrol_chip(kcontrol);
+
+       if (tas->muted_l == !ucontrol->value.integer.value[0]
+        && tas->muted_r == !ucontrol->value.integer.value[1])
+               return 0;
+
+       tas->muted_l = !ucontrol->value.integer.value[0];
+       tas->muted_r = !ucontrol->value.integer.value[1];
+       tas_set_volume(tas);
+       return 1;
+}
+
+static struct snd_kcontrol_new mute_control = {
+       .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+       .name = "Master Playback Switch",
+       .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+       .info = tas_snd_mute_info,
+       .get = tas_snd_mute_get,
+       .put = tas_snd_mute_put,
+};
+
+static int tas_snd_mixer_info(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_info *uinfo)
+{
+       uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+       uinfo->count = 2;
+       uinfo->value.integer.min = 0;
+       uinfo->value.integer.max = 177;
+       return 0;
+}
+
+static int tas_snd_mixer_get(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_value *ucontrol)
+{
+       struct tas *tas = snd_kcontrol_chip(kcontrol);
+       int idx = kcontrol->private_value;
+
+       ucontrol->value.integer.value[0] = tas->mixer_l[idx];
+       ucontrol->value.integer.value[1] = tas->mixer_r[idx];
+
+       return 0;
+}
+
+static int tas_snd_mixer_put(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_value *ucontrol)
+{
+       struct tas *tas = snd_kcontrol_chip(kcontrol);
+       int idx = kcontrol->private_value;
+
+       if (tas->mixer_l[idx] == ucontrol->value.integer.value[0]
+        && tas->mixer_r[idx] == ucontrol->value.integer.value[1])
+               return 0;
+
+       tas->mixer_l[idx] = ucontrol->value.integer.value[0];
+       tas->mixer_r[idx] = ucontrol->value.integer.value[1];
+
+       tas_set_mixer(tas);
+       return 1;
+}
+
+#define MIXER_CONTROL(n,descr,idx)                     \
+static struct snd_kcontrol_new n##_control = {         \
+       .iface = SNDRV_CTL_ELEM_IFACE_MIXER,            \
+       .name = descr " Playback Volume",               \
+       .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,      \
+       .info = tas_snd_mixer_info,                     \
+       .get = tas_snd_mixer_get,                       \
+       .put = tas_snd_mixer_put,                       \
+       .private_value = idx,                           \
+}
+
+MIXER_CONTROL(pcm1, "PCM1", 0);
+MIXER_CONTROL(monitor, "Monitor", 2);
+
+static int tas_snd_capture_source_info(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_info *uinfo)
+{
+       static char *texts[] = { "Line-In", "Microphone" };
+
+       uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+       uinfo->count = 1;
+       uinfo->value.enumerated.items = 2;
+       if (uinfo->value.enumerated.item > 1)
+               uinfo->value.enumerated.item = 1;
+       strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
+       return 0;
+}
+
+static int tas_snd_capture_source_get(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_value *ucontrol)
+{
+       struct tas *tas = snd_kcontrol_chip(kcontrol);
+
+       ucontrol->value.enumerated.item[0] = !!(tas->acr & TAS_ACR_INPUT_B);
+       return 0;
+}
+
+static int tas_snd_capture_source_put(struct snd_kcontrol *kcontrol,
+       struct snd_ctl_elem_value *ucontrol)
+{
+       struct tas *tas = snd_kcontrol_chip(kcontrol);
+       int oldacr = tas->acr;
+
+       tas->acr &= ~TAS_ACR_INPUT_B;
+       if (ucontrol->value.enumerated.item[0])
+               tas->acr |= TAS_ACR_INPUT_B;
+       if (oldacr == tas->acr)
+               return 0;
+       tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr);
+       return 1;
+}
+
+static struct snd_kcontrol_new capture_source_control = {
+       .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+       /* If we name this 'Input Source', it properly shows up in
+        * alsamixer as a selection, * but it's shown under the
+        * 'Playback' category.
+        * If I name it 'Capture Source', it shows up in strange
+        * ways (two bools of which one can be selected at a
+        * time) but at least it's shown in the 'Capture'
+        * category.
+        * I was told that this was due to backward compatibility,
+        * but I don't understand then why the mangling is *not*
+        * done when I name it "Input Source".....
+        */
+       .name = "Capture Source",
+       .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+       .info = tas_snd_capture_source_info,
+       .get = tas_snd_capture_source_get,
+       .put = tas_snd_capture_source_put,
+};
+
+
+static struct transfer_info tas_transfers[] = {
+       {
+               /* input */
+               .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_BE |
+                          SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S24_BE,
+               .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
+               .transfer_in = 1,
+       },
+       {
+               /* output */
+               .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_BE |
+                          SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S24_BE,
+               .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
+               .transfer_in = 0,
+       },
+       {}
+};
+
+static int tas_usable(struct codec_info_item *cii,
+                     struct transfer_info *ti,
+                     struct transfer_info *out)
+{
+       return 1;
+}
+
+static int tas_reset_init(struct tas *tas)
+{
+       u8 tmp;
+       tas->codec.gpio->methods->set_hw_reset(tas->codec.gpio, 0);
+       msleep(1);
+       tas->codec.gpio->methods->set_hw_reset(tas->codec.gpio, 1);
+       msleep(1);
+       tas->codec.gpio->methods->set_hw_reset(tas->codec.gpio, 0);
+       msleep(1);
+
+       tas->acr &= ~TAS_ACR_ANALOG_PDOWN;
+       tas->acr |= TAS_ACR_B_MONAUREAL | TAS_ACR_B_MON_SEL_RIGHT;
+       if (tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr))
+               return -ENODEV;
+
+       tmp = TAS_MCS_SCLK64 | TAS_MCS_SPORT_MODE_I2S | TAS_MCS_SPORT_WL_24BIT;
+       if (tas_write_reg(tas, TAS_REG_MCS, 1, &tmp))
+               return -ENODEV;
+
+       tmp = 0;
+       if (tas_write_reg(tas, TAS_REG_MCS2, 1, &tmp))
+               return -ENODEV;
+
+       return 0;
+}
+
+/* we are controlled via i2c and assume that is always up
+ * If that wasn't the case, we'd have to suspend once
+ * our i2c device is suspended, and then take note of that! */
+static int tas_suspend(struct tas *tas)
+{
+       tas->acr |= TAS_ACR_ANALOG_PDOWN;
+       tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr);
+       return 0;
+}
+
+static int tas_resume(struct tas *tas)
+{
+       /* reset codec */
+       tas_reset_init(tas);
+       tas_set_volume(tas);
+       tas_set_mixer(tas);
+       return 0;
+}
+
+#ifdef CONFIG_PM
+static int _tas_suspend(struct codec_info_item *cii, pm_message_t state)
+{
+       return tas_suspend(cii->codec_data);
+}
+
+static int _tas_resume(struct codec_info_item *cii)
+{
+       return tas_resume(cii->codec_data);
+}
+#endif
+
+static struct codec_info tas_codec_info = {
+       .transfers = tas_transfers,
+       /* in theory, we can drive it at 512 too...
+        * but so far the framework doesn't allow
+        * for that and I don't see much point in it. */
+       .sysclock_factor = 256,
+       /* same here, could be 32 for just one 16 bit format */
+       .bus_factor = 64,
+       .owner = THIS_MODULE,
+       .usable = tas_usable,
+#ifdef CONFIG_PM
+       .suspend = _tas_suspend,
+       .resume = _tas_resume,
+#endif
+};
+
+static int tas_init_codec(struct aoa_codec *codec)
+{
+       struct tas *tas = codec_to_tas(codec);
+       int err;
+
+       if (!tas->codec.gpio || !tas->codec.gpio->methods) {
+               printk(KERN_ERR PFX "gpios not assigned!!\n");
+               return -EINVAL;
+       }
+
+       if (tas_reset_init(tas)) {
+               printk(KERN_ERR PFX "tas failed to initialise\n");
+               return -ENXIO;
+       }
+
+       if (tas->codec.soundbus_dev->attach_codec(tas->codec.soundbus_dev,
+                                                  aoa_get_card(),
+                                                  &tas_codec_info, tas)) {
+               printk(KERN_ERR PFX "error attaching tas to soundbus\n");
+               return -ENODEV;
+       }
+
+       if (aoa_snd_device_new(SNDRV_DEV_LOWLEVEL, tas, &ops)) {
+               printk(KERN_ERR PFX "failed to create tas snd device!\n");
+               return -ENODEV;
+       }
+       err = aoa_snd_ctl_add(snd_ctl_new1(&volume_control, tas));
+       if (err)
+               goto error;
+
+       err = aoa_snd_ctl_add(snd_ctl_new1(&mute_control, tas));
+       if (err)
+               goto error;
+
+       err = aoa_snd_ctl_add(snd_ctl_new1(&pcm1_control, tas));
+       if (err)
+               goto error;
+
+       err = aoa_snd_ctl_add(snd_ctl_new1(&monitor_control, tas));
+       if (err)
+               goto error;
+
+       err = aoa_snd_ctl_add(snd_ctl_new1(&capture_source_control, tas));
+       if (err)
+               goto error;
+
+       return 0;
+ error:
+       tas->codec.soundbus_dev->detach_codec(tas->codec.soundbus_dev, tas);
+       snd_device_free(aoa_get_card(), tas);
+       return err;
+}
+
+static void tas_exit_codec(struct aoa_codec *codec)
+{
+       struct tas *tas = codec_to_tas(codec);
+
+       if (!tas->codec.soundbus_dev)
+               return;
+       tas->codec.soundbus_dev->detach_codec(tas->codec.soundbus_dev, tas);
+}
+       
+
+static struct i2c_driver tas_driver;
+
+static int tas_create(struct i2c_adapter *adapter,
+                      struct device_node *node,
+                      int addr)
+{
+       struct tas *tas;
+
+       tas = kzalloc(sizeof(struct tas), GFP_KERNEL);
+
+       if (!tas)
+               return -ENOMEM;
+
+       tas->i2c.driver = &tas_driver;
+       tas->i2c.adapter = adapter;
+       tas->i2c.addr = addr;
+       strlcpy(tas->i2c.name, "tas audio codec", I2C_NAME_SIZE-1);
+
+       if (i2c_attach_client(&tas->i2c)) {
+               printk(KERN_ERR PFX "failed to attach to i2c\n");
+               goto fail;
+       }
+
+       strlcpy(tas->codec.name, "tas", MAX_CODEC_NAME_LEN-1);
+       tas->codec.owner = THIS_MODULE;
+       tas->codec.init = tas_init_codec;
+       tas->codec.exit = tas_exit_codec;
+       tas->codec.node = of_node_get(node);
+
+       if (aoa_codec_register(&tas->codec)) {
+               goto detach;
+       }
+       printk(KERN_DEBUG "snd-aoa-codec-tas: created and attached tas instance\n");
+       return 0;
+ detach:
+       i2c_detach_client(&tas->i2c);
+ fail:
+       kfree(tas);
+       return -EINVAL;
+}
+
+static int tas_i2c_attach(struct i2c_adapter *adapter)
+{
+       struct device_node *busnode, *dev = NULL;
+       struct pmac_i2c_bus *bus;
+
+       bus = pmac_i2c_adapter_to_bus(adapter);
+       if (bus == NULL)
+               return -ENODEV;
+       busnode = pmac_i2c_get_bus_node(bus);
+
+       while ((dev = of_get_next_child(busnode, dev)) != NULL) {
+               if (device_is_compatible(dev, "tas3004")) {
+                       u32 *addr;
+                       printk(KERN_DEBUG PFX "found tas3004\n");
+                       addr = (u32 *) get_property(dev, "reg", NULL);
+                       if (!addr)
+                               continue;
+                       return tas_create(adapter, dev, ((*addr) >> 1) & 0x7f);
+               }
+               /* older machines have no 'codec' node with a 'compatible'
+                * property that says 'tas3004', they just have a 'deq'
+                * node without any such property... */
+               if (strcmp(dev->name, "deq") == 0) {
+                       u32 *_addr, addr;
+                       printk(KERN_DEBUG PFX "found 'deq' node\n");
+                       _addr = (u32 *) get_property(dev, "i2c-address", NULL);
+                       if (!_addr)
+                               continue;
+                       addr = ((*_addr) >> 1) & 0x7f;
+                       /* now, if the address doesn't match any of the two
+                        * that a tas3004 can have, we cannot handle this.
+                        * I doubt it ever happens but hey. */
+                       if (addr != 0x34 && addr != 0x35)
+                               continue;
+                       return tas_create(adapter, dev, addr);
+               }
+       }
+       return -ENODEV;
+}
+
+static int tas_i2c_detach(struct i2c_client *client)
+{
+       struct tas *tas = container_of(client, struct tas, i2c);
+       int err;
+       u8 tmp = TAS_ACR_ANALOG_PDOWN;
+
+       if ((err = i2c_detach_client(client)))
+               return err;
+       aoa_codec_unregister(&tas->codec);
+       of_node_put(tas->codec.node);
+
+       /* power down codec chip */
+       tas_write_reg(tas, TAS_REG_ACR, 1, &tmp);
+
+       kfree(tas);
+       return 0;
+}
+
+static struct i2c_driver tas_driver = {
+       .driver = {
+               .name = "aoa_codec_tas",
+               .owner = THIS_MODULE,
+       },
+       .attach_adapter = tas_i2c_attach,
+       .detach_client = tas_i2c_detach,
+};
+
+static int __init tas_init(void)
+{
+       return i2c_add_driver(&tas_driver);
+}
+
+static void __exit tas_exit(void)
+{
+       i2c_del_driver(&tas_driver);
+}
+
+module_init(tas_init);
+module_exit(tas_exit);
diff --git a/sound/aoa/codecs/snd-aoa-codec-tas.h b/sound/aoa/codecs/snd-aoa-codec-tas.h
new file mode 100644 (file)
index 0000000..daf81f4
--- /dev/null
@@ -0,0 +1,47 @@
+/*
+ * Apple Onboard Audio driver for tas codec (header)
+ *
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * GPL v2, can be found in COPYING.
+ */
+#ifndef __SND_AOA_CODECTASH
+#define __SND_AOA_CODECTASH
+
+#define TAS_REG_MCS    0x01    /* main control */
+#      define TAS_MCS_FASTLOAD         (1<<7)
+#      define TAS_MCS_SCLK64           (1<<6)
+#      define TAS_MCS_SPORT_MODE_MASK  (3<<4)
+#      define TAS_MCS_SPORT_MODE_I2S   (2<<4)
+#      define TAS_MCS_SPORT_MODE_RJ    (1<<4)
+#      define TAS_MCS_SPORT_MODE_LJ    (0<<4)
+#      define TAS_MCS_SPORT_WL_MASK    (3<<0)
+#      define TAS_MCS_SPORT_WL_16BIT   (0<<0)
+#      define TAS_MCS_SPORT_WL_18BIT   (1<<0)
+#      define TAS_MCS_SPORT_WL_20BIT   (2<<0)
+#      define TAS_MCS_SPORT_WL_24BIT   (3<<0)
+
+#define TAS_REG_DRC    0x02
+#define TAS_REG_VOL    0x04
+#define TAS_REG_TREBLE 0x05
+#define TAS_REG_BASS   0x06
+#define TAS_REG_LMIX   0x07
+#define TAS_REG_RMIX   0x08
+
+#define TAS_REG_ACR    0x40    /* analog control */
+#      define TAS_ACR_B_MONAUREAL      (1<<7)
+#      define TAS_ACR_B_MON_SEL_RIGHT  (1<<6)
+#      define TAS_ACR_DEEMPH_MASK      (3<<2)
+#      define TAS_ACR_DEEMPH_OFF       (0<<2)
+#      define TAS_ACR_DEEMPH_48KHz     (1<<2)
+#      define TAS_ACR_DEEMPH_44KHz     (2<<2)
+#      define TAS_ACR_INPUT_B          (1<<1)
+#      define TAS_ACR_ANALOG_PDOWN     (1<<0)
+
+#define TAS_REG_MCS2   0x43    /* main control 2 */
+#      define TAS_MCS2_ALLPASS         (1<<1)
+
+#define TAS_REG_LEFT_BIQUAD6   0x10
+#define TAS_REG_RIGHT_BIQUAD6  0x19
+
+#endif /* __SND_AOA_CODECTASH */
diff --git a/sound/aoa/codecs/snd-aoa-codec-toonie.c b/sound/aoa/codecs/snd-aoa-codec-toonie.c
new file mode 100644 (file)
index 0000000..bcc5556
--- /dev/null
@@ -0,0 +1,141 @@
+/*
+ * Apple Onboard Audio driver for Toonie codec
+ *
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * GPL v2, can be found in COPYING.
+ *
+ *
+ * This is a driver for the toonie codec chip. This chip is present
+ * on the Mac Mini and is nothing but a DAC.
+ */
+#include <linux/delay.h>
+#include <linux/module.h>
+MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("toonie codec driver for snd-aoa");
+
+#include "../aoa.h"
+#include "../soundbus/soundbus.h"
+
+
+#define PFX "snd-aoa-codec-toonie: "
+
+struct toonie {
+       struct aoa_codec        codec;
+};
+#define codec_to_toonie(c) container_of(c, struct toonie, codec)
+
+static int toonie_dev_register(struct snd_device *dev)
+{
+       return 0;
+}
+
+static struct snd_device_ops ops = {
+       .dev_register = toonie_dev_register,
+};
+
+static struct transfer_info toonie_transfers[] = {
+       /* This thing *only* has analog output,
+        * the rates are taken from Info.plist
+        * from Darwin. */
+       {
+               .formats = SNDRV_PCM_FMTBIT_S16_BE |
+                          SNDRV_PCM_FMTBIT_S24_BE,
+               .rates = SNDRV_PCM_RATE_32000 |
+                        SNDRV_PCM_RATE_44100 |
+                        SNDRV_PCM_RATE_48000 |
+                        SNDRV_PCM_RATE_88200 |
+                        SNDRV_PCM_RATE_96000,
+       },
+       {}
+};
+
+#ifdef CONFIG_PM
+static int toonie_suspend(struct codec_info_item *cii, pm_message_t state)
+{
+       /* can we turn it off somehow? */
+       return 0;
+}
+
+static int toonie_resume(struct codec_info_item *cii)
+{
+       return 0;
+}
+#endif /* CONFIG_PM */
+
+static struct codec_info toonie_codec_info = {
+       .transfers = toonie_transfers,
+       .sysclock_factor = 256,
+       .bus_factor = 64,
+       .owner = THIS_MODULE,
+#ifdef CONFIG_PM
+       .suspend = toonie_suspend,
+       .resume = toonie_resume,
+#endif
+};
+
+static int toonie_init_codec(struct aoa_codec *codec)
+{
+       struct toonie *toonie = codec_to_toonie(codec);
+
+       if (aoa_snd_device_new(SNDRV_DEV_LOWLEVEL, toonie, &ops)) {
+               printk(KERN_ERR PFX "failed to create toonie snd device!\n");
+               return -ENODEV;
+       }
+
+       /* nothing connected? what a joke! */
+       if (toonie->codec.connected != 1)
+               return -ENOTCONN;
+
+       if (toonie->codec.soundbus_dev->attach_codec(toonie->codec.soundbus_dev,
+                                                    aoa_get_card(),
+                                                    &toonie_codec_info, toonie)) {
+               printk(KERN_ERR PFX "error creating toonie pcm\n");
+               return -ENODEV;
+       }
+
+       return 0;
+}
+
+static void toonie_exit_codec(struct aoa_codec *codec)
+{
+       struct toonie *toonie = codec_to_toonie(codec);
+
+       if (!toonie->codec.soundbus_dev) {
+               printk(KERN_ERR PFX "toonie_exit_codec called without soundbus_dev!\n");
+               return;
+       }
+       toonie->codec.soundbus_dev->detach_codec(toonie->codec.soundbus_dev, toonie);
+}
+
+static struct toonie *toonie;
+
+static int __init toonie_init(void)
+{
+       toonie = kzalloc(sizeof(struct toonie), GFP_KERNEL);
+
+       if (!toonie)
+               return -ENOMEM;
+
+       strlcpy(toonie->codec.name, "toonie", sizeof(toonie->codec.name));
+       toonie->codec.owner = THIS_MODULE;
+       toonie->codec.init = toonie_init_codec;
+       toonie->codec.exit = toonie_exit_codec;
+                                        
+       if (aoa_codec_register(&toonie->codec)) {
+               kfree(toonie);
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static void __exit toonie_exit(void)
+{
+       aoa_codec_unregister(&toonie->codec);
+       kfree(toonie);
+}
+
+module_init(toonie_init);
+module_exit(toonie_exit);
diff --git a/sound/aoa/core/Makefile b/sound/aoa/core/Makefile
new file mode 100644 (file)
index 0000000..62dc728
--- /dev/null
@@ -0,0 +1,5 @@
+obj-$(CONFIG_SND_AOA) += snd-aoa.o
+snd-aoa-objs := snd-aoa-core.o \
+               snd-aoa-alsa.o \
+               snd-aoa-gpio-pmf.o \
+               snd-aoa-gpio-feature.o
diff --git a/sound/aoa/core/snd-aoa-alsa.c b/sound/aoa/core/snd-aoa-alsa.c
new file mode 100644 (file)
index 0000000..b42fdea
--- /dev/null
@@ -0,0 +1,98 @@
+/*
+ * Apple Onboard Audio Alsa helpers
+ *
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * GPL v2, can be found in COPYING.
+ */
+#include <linux/module.h>
+#include "snd-aoa-alsa.h"
+
+static int index = -1;
+module_param(index, int, 0444);
+MODULE_PARM_DESC(index, "index for AOA sound card.");
+
+static struct aoa_card *aoa_card;
+
+int aoa_alsa_init(char *name, struct module *mod)
+{
+       struct snd_card *alsa_card;
+       int err;
+
+       if (aoa_card)
+               /* cannot be EEXIST due to usage in aoa_fabric_register */
+               return -EBUSY;
+
+       alsa_card = snd_card_new(index, name, mod, sizeof(struct aoa_card));
+       if (!alsa_card)
+               return -ENOMEM;
+       aoa_card = alsa_card->private_data;
+       aoa_card->alsa_card = alsa_card;
+       strlcpy(alsa_card->driver, "AppleOnbdAudio", sizeof(alsa_card->driver));
+       strlcpy(alsa_card->shortname, name, sizeof(alsa_card->shortname));
+       strlcpy(alsa_card->longname, name, sizeof(alsa_card->longname));
+       strlcpy(alsa_card->mixername, name, sizeof(alsa_card->mixername));
+       err = snd_card_register(aoa_card->alsa_card);
+       if (err < 0) {
+               printk(KERN_ERR "snd-aoa: couldn't register alsa card\n");
+               snd_card_free(aoa_card->alsa_card);
+               aoa_card = NULL;
+               return err;
+       }
+       return 0;
+}
+
+struct snd_card *aoa_get_card(void)
+{
+       if (aoa_card)
+               return aoa_card->alsa_card;
+       return NULL;
+}
+EXPORT_SYMBOL_GPL(aoa_get_card);
+
+void aoa_alsa_cleanup(void)
+{
+       if (aoa_card) {
+               snd_card_free(aoa_card->alsa_card);
+               aoa_card = NULL;
+       }
+}
+
+int aoa_snd_device_new(snd_device_type_t type,
+        void * device_data, struct snd_device_ops * ops)
+{
+       struct snd_card *card = aoa_get_card();
+       int err;
+       
+       if (!card) return -ENOMEM;
+
+       err = snd_device_new(card, type, device_data, ops);
+       if (err) {
+               printk(KERN_ERR "snd-aoa: failed to create snd device (%d)\n", err);
+               return err;
+       }
+       err = snd_device_register(card, device_data);
+       if (err) {
+               printk(KERN_ERR "snd-aoa: failed to register "
+                               "snd device (%d)\n", err);
+               printk(KERN_ERR "snd-aoa: have you forgotten the "
+                               "dev_register callback?\n");
+               snd_device_free(card, device_data);
+       }
+       return err;
+}
+EXPORT_SYMBOL_GPL(aoa_snd_device_new);
+
+int aoa_snd_ctl_add(struct snd_kcontrol* control)
+{
+       int err;
+
+       if (!aoa_card) return -ENODEV;
+
+       err = snd_ctl_add(aoa_card->alsa_card, control);
+       if (err)
+               printk(KERN_ERR "snd-aoa: failed to add alsa control (%d)\n",
+                      err);
+       return err;
+}
+EXPORT_SYMBOL_GPL(aoa_snd_ctl_add);
diff --git a/sound/aoa/core/snd-aoa-alsa.h b/sound/aoa/core/snd-aoa-alsa.h
new file mode 100644 (file)
index 0000000..660d2f1
--- /dev/null
@@ -0,0 +1,16 @@
+/*
+ * Apple Onboard Audio Alsa private helpers
+ *
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * GPL v2, can be found in COPYING.
+ */
+
+#ifndef __SND_AOA_ALSA_H
+#define __SND_AOA_ALSA_H
+#include "../aoa.h"
+
+extern int aoa_alsa_init(char *name, struct module *mod);
+extern void aoa_alsa_cleanup(void);
+
+#endif /* __SND_AOA_ALSA_H */
diff --git a/sound/aoa/core/snd-aoa-core.c b/sound/aoa/core/snd-aoa-core.c
new file mode 100644 (file)
index 0000000..ecd2d82
--- /dev/null
@@ -0,0 +1,162 @@
+/*
+ * Apple Onboard Audio driver core
+ *
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * GPL v2, can be found in COPYING.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/list.h>
+#include "../aoa.h"
+#include "snd-aoa-alsa.h"
+
+MODULE_DESCRIPTION("Apple Onboard Audio Sound Driver");
+MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>");
+MODULE_LICENSE("GPL");
+
+/* We allow only one fabric. This simplifies things,
+ * and more don't really make that much sense */
+static struct aoa_fabric *fabric;
+static LIST_HEAD(codec_list);
+
+static int attach_codec_to_fabric(struct aoa_codec *c)
+{
+       int err;
+
+       if (!try_module_get(c->owner))
+               return -EBUSY;
+       /* found_codec has to be assigned */
+       err = -ENOENT;
+       if (fabric->found_codec)
+               err = fabric->found_codec(c);
+       if (err) {
+               module_put(c->owner);
+               printk(KERN_ERR "snd-aoa: fabric didn't like codec %s\n",
+                               c->name);
+               return err;
+       }
+       c->fabric = fabric;
+
+       err = 0;
+       if (c->init)
+               err = c->init(c);
+       if (err) {
+               printk(KERN_ERR "snd-aoa: codec %s didn't init\n", c->name);
+               c->fabric = NULL;
+               if (fabric->remove_codec)
+                       fabric->remove_codec(c);
+               module_put(c->owner);
+               return err;
+       }
+       if (fabric->attached_codec)
+               fabric->attached_codec(c);
+       return 0;
+}
+
+int aoa_codec_register(struct aoa_codec *codec)
+{
+       int err = 0;
+
+       /* if there's a fabric already, we can tell if we
+        * will want to have this codec, so propagate error
+        * through. Otherwise, this will happen later... */
+       if (fabric)
+               err = attach_codec_to_fabric(codec);
+       if (!err)
+               list_add(&codec->list, &codec_list);
+       return err;
+}
+EXPORT_SYMBOL_GPL(aoa_codec_register);
+
+void aoa_codec_unregister(struct aoa_codec *codec)
+{
+       list_del(&codec->list);
+       if (codec->fabric && codec->exit)
+               codec->exit(codec);
+       if (fabric && fabric->remove_codec)
+               fabric->remove_codec(codec);
+       codec->fabric = NULL;
+       module_put(codec->owner);
+}
+EXPORT_SYMBOL_GPL(aoa_codec_unregister);
+
+int aoa_fabric_register(struct aoa_fabric *new_fabric)
+{
+       struct aoa_codec *c;
+       int err;
+
+       /* allow querying for presence of fabric
+        * (i.e. do this test first!) */
+       if (new_fabric == fabric) {
+               err = -EALREADY;
+               goto attach;
+       }
+       if (fabric)
+               return -EEXIST;
+       if (!new_fabric)
+               return -EINVAL;
+
+       err = aoa_alsa_init(new_fabric->name, new_fabric->owner);
+       if (err)
+               return err;
+
+       fabric = new_fabric;
+
+ attach:
+       list_for_each_entry(c, &codec_list, list) {
+               if (c->fabric != fabric)
+                       attach_codec_to_fabric(c);
+       }
+       return err;
+}
+EXPORT_SYMBOL_GPL(aoa_fabric_register);
+
+void aoa_fabric_unregister(struct aoa_fabric *old_fabric)
+{
+       struct aoa_codec *c;
+
+       if (fabric != old_fabric)
+               return;
+
+       list_for_each_entry(c, &codec_list, list) {
+               if (c->fabric)
+                       aoa_fabric_unlink_codec(c);
+       }
+
+       aoa_alsa_cleanup();
+
+       fabric = NULL;
+}
+EXPORT_SYMBOL_GPL(aoa_fabric_unregister);
+
+void aoa_fabric_unlink_codec(struct aoa_codec *codec)
+{
+       if (!codec->fabric) {
+               printk(KERN_ERR "snd-aoa: fabric unassigned "
+                               "in aoa_fabric_unlink_codec\n");
+               dump_stack();
+               return;
+       }
+       if (codec->exit)
+               codec->exit(codec);
+       if (codec->fabric->remove_codec)
+               codec->fabric->remove_codec(codec);
+       codec->fabric = NULL;
+       module_put(codec->owner);
+}
+EXPORT_SYMBOL_GPL(aoa_fabric_unlink_codec);
+
+static int __init aoa_init(void)
+{
+       return 0;
+}
+
+static void __exit aoa_exit(void)
+{
+       aoa_alsa_cleanup();
+}
+
+module_init(aoa_init);
+module_exit(aoa_exit);
diff --git a/sound/aoa/core/snd-aoa-gpio-feature.c b/sound/aoa/core/snd-aoa-gpio-feature.c
new file mode 100644 (file)
index 0000000..2c6eb77
--- /dev/null
@@ -0,0 +1,399 @@
+/*
+ * Apple Onboard Audio feature call GPIO control
+ *
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * GPL v2, can be found in COPYING.
+ *
+ * This file contains the GPIO control routines for 
+ * direct (through feature calls) access to the GPIO
+ * registers.
+ */
+
+#include <asm/pmac_feature.h>
+#include <linux/interrupt.h>
+#include "../aoa.h"
+
+/* TODO: these are 20 global variables
+ * that aren't used on most machines...
+ * Move them into a dynamically allocated
+ * structure and use that.
+ */
+
+/* these are the GPIO numbers (register addresses as offsets into
+ * the GPIO space) */
+static int headphone_mute_gpio;
+static int amp_mute_gpio;
+static int lineout_mute_gpio;
+static int hw_reset_gpio;
+static int lineout_detect_gpio;
+static int headphone_detect_gpio;
+static int linein_detect_gpio;
+
+/* see the SWITCH_GPIO macro */
+static int headphone_mute_gpio_activestate;
+static int amp_mute_gpio_activestate;
+static int lineout_mute_gpio_activestate;
+static int hw_reset_gpio_activestate;
+static int lineout_detect_gpio_activestate;
+static int headphone_detect_gpio_activestate;
+static int linein_detect_gpio_activestate;
+
+/* node pointers that we save when getting the GPIO number
+ * to get the interrupt later */
+static struct device_node *lineout_detect_node;
+static struct device_node *linein_detect_node;
+static struct device_node *headphone_detect_node;
+
+static int lineout_detect_irq;
+static int linein_detect_irq;
+static int headphone_detect_irq;
+
+static struct device_node *get_gpio(char *name,
+                                   char *altname,
+                                   int *gpioptr,
+                                   int *gpioactiveptr)
+{
+       struct device_node *np, *gpio;
+       u32 *reg;
+       char *audio_gpio;
+
+       *gpioptr = -1;
+
+       /* check if we can get it the easy way ... */
+       np = of_find_node_by_name(NULL, name);
+       if (!np) {
+               /* some machines have only gpioX/extint-gpioX nodes,
+                * and an audio-gpio property saying what it is ...
+                * So what we have to do is enumerate all children
+                * of the gpio node and check them all. */
+               gpio = of_find_node_by_name(NULL, "gpio");
+               if (!gpio)
+                       return NULL;
+               while ((np = of_get_next_child(gpio, np))) {
+                       audio_gpio = get_property(np, "audio-gpio", NULL);
+                       if (!audio_gpio)
+                               continue;
+                       if (strcmp(audio_gpio, name) == 0)
+                               break;
+                       if (altname && (strcmp(audio_gpio, altname) == 0))
+                               break;
+               }
+               /* still not found, assume not there */
+               if (!np)
+                       return NULL;
+       }
+
+       reg = (u32 *)get_property(np, "reg", NULL);
+       if (!reg)
+               return NULL;
+
+       *gpioptr = *reg;
+
+       /* this is a hack, usually the GPIOs 'reg' property
+        * should have the offset based from the GPIO space
+        * which is at 0x50, but apparently not always... */
+       if (*gpioptr < 0x50)
+               *gpioptr += 0x50;
+
+       reg = (u32 *)get_property(np, "audio-gpio-active-state", NULL);
+       if (!reg)
+               /* Apple seems to default to 1, but
+                * that doesn't seem right at least on most
+                * machines. So until proven that the opposite
+                * is necessary, we default to 0
+                * (which, incidentally, snd-powermac also does...) */
+               *gpioactiveptr = 0;
+       else
+               *gpioactiveptr = *reg;
+
+       return np;
+}
+
+static void get_irq(struct device_node * np, int *irqptr)
+{
+       *irqptr = -1;
+       if (!np)
+               return;
+       if (np->n_intrs != 1)
+               return;
+       *irqptr = np->intrs[0].line;
+}
+
+/* 0x4 is outenable, 0x1 is out, thus 4 or 5 */
+#define SWITCH_GPIO(name, v, on)                               \
+       (((v)&~1) | ((on)?                                      \
+                       (name##_gpio_activestate==0?4:5):       \
+                       (name##_gpio_activestate==0?5:4)))
+
+#define FTR_GPIO(name, bit)                                    \
+static void ftr_gpio_set_##name(struct gpio_runtime *rt, int on)\
+{                                                              \
+       int v;                                                  \
+                                                               \
+       if (unlikely(!rt)) return;                              \
+                                                               \
+       if (name##_mute_gpio < 0)                               \
+               return;                                         \
+                                                               \
+       v = pmac_call_feature(PMAC_FTR_READ_GPIO, NULL,         \
+                             name##_mute_gpio,                 \
+                             0);                               \
+                                                               \
+       /* muted = !on... */                                    \
+       v = SWITCH_GPIO(name##_mute, v, !on);                   \
+                                                               \
+       pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL,            \
+                         name##_mute_gpio, v);                 \
+                                                               \
+       rt->implementation_private &= ~(1<<bit);                \
+       rt->implementation_private |= (!!on << bit);            \
+}                                                              \
+static int ftr_gpio_get_##name(struct gpio_runtime *rt)                \
+{                                                              \
+       if (unlikely(!rt)) return 0;                            \
+       return (rt->implementation_private>>bit)&1;             \
+}
+
+FTR_GPIO(headphone, 0);
+FTR_GPIO(amp, 1);
+FTR_GPIO(lineout, 2);
+
+static void ftr_gpio_set_hw_reset(struct gpio_runtime *rt, int on)
+{
+       int v;
+
+       if (unlikely(!rt)) return;
+       if (hw_reset_gpio < 0)
+               return;
+
+       v = pmac_call_feature(PMAC_FTR_READ_GPIO, NULL,
+                             hw_reset_gpio, 0);
+       v = SWITCH_GPIO(hw_reset, v, on);
+       pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL,
+                         hw_reset_gpio, v);
+}
+
+static void ftr_gpio_all_amps_off(struct gpio_runtime *rt)
+{
+       int saved;
+
+       if (unlikely(!rt)) return;
+       saved = rt->implementation_private;
+       ftr_gpio_set_headphone(rt, 0);
+       ftr_gpio_set_amp(rt, 0);
+       ftr_gpio_set_lineout(rt, 0);
+       rt->implementation_private = saved;
+}
+
+static void ftr_gpio_all_amps_restore(struct gpio_runtime *rt)
+{
+       int s;
+
+       if (unlikely(!rt)) return;
+       s = rt->implementation_private;
+       ftr_gpio_set_headphone(rt, (s>>0)&1);
+       ftr_gpio_set_amp(rt, (s>>1)&1);
+       ftr_gpio_set_lineout(rt, (s>>2)&1);
+}
+
+static void ftr_handle_notify(void *data)
+{
+       struct gpio_notification *notif = data;
+
+       mutex_lock(&notif->mutex);
+       if (notif->notify)
+               notif->notify(notif->data);
+       mutex_unlock(&notif->mutex);
+}
+
+static void ftr_gpio_init(struct gpio_runtime *rt)
+{
+       get_gpio("headphone-mute", NULL,
+                &headphone_mute_gpio,
+                &headphone_mute_gpio_activestate);
+       get_gpio("amp-mute", NULL,
+                &amp_mute_gpio,
+                &amp_mute_gpio_activestate);
+       get_gpio("lineout-mute", NULL,
+                &lineout_mute_gpio,
+                &lineout_mute_gpio_activestate);
+       get_gpio("hw-reset", "audio-hw-reset",
+                &hw_reset_gpio,
+                &hw_reset_gpio_activestate);
+
+       headphone_detect_node = get_gpio("headphone-detect", NULL,
+                                        &headphone_detect_gpio,
+                                        &headphone_detect_gpio_activestate);
+       /* go Apple, and thanks for giving these different names
+        * across the board... */
+       lineout_detect_node = get_gpio("lineout-detect", "line-output-detect",
+                                      &lineout_detect_gpio,
+                                      &lineout_detect_gpio_activestate);
+       linein_detect_node = get_gpio("linein-detect", "line-input-detect",
+                                     &linein_detect_gpio,
+                                     &linein_detect_gpio_activestate);
+
+       get_irq(headphone_detect_node, &headphone_detect_irq);
+       get_irq(lineout_detect_node, &lineout_detect_irq);
+       get_irq(linein_detect_node, &linein_detect_irq);
+
+       ftr_gpio_all_amps_off(rt);
+       rt->implementation_private = 0;
+       INIT_WORK(&rt->headphone_notify.work, ftr_handle_notify,
+                 &rt->headphone_notify);
+       INIT_WORK(&rt->line_in_notify.work, ftr_handle_notify,
+                 &rt->line_in_notify);
+       INIT_WORK(&rt->line_out_notify.work, ftr_handle_notify,
+                 &rt->line_out_notify);
+       mutex_init(&rt->headphone_notify.mutex);
+       mutex_init(&rt->line_in_notify.mutex);
+       mutex_init(&rt->line_out_notify.mutex);
+}
+
+static void ftr_gpio_exit(struct gpio_runtime *rt)
+{
+       ftr_gpio_all_amps_off(rt);
+       rt->implementation_private = 0;
+       if (rt->headphone_notify.notify)
+               free_irq(headphone_detect_irq, &rt->headphone_notify);
+       if (rt->line_in_notify.gpio_private)
+               free_irq(linein_detect_irq, &rt->line_in_notify);
+       if (rt->line_out_notify.gpio_private)
+               free_irq(lineout_detect_irq, &rt->line_out_notify);
+       cancel_delayed_work(&rt->headphone_notify.work);
+       cancel_delayed_work(&rt->line_in_notify.work);
+       cancel_delayed_work(&rt->line_out_notify.work);
+       flush_scheduled_work();
+       mutex_destroy(&rt->headphone_notify.mutex);
+       mutex_destroy(&rt->line_in_notify.mutex);
+       mutex_destroy(&rt->line_out_notify.mutex);
+}
+
+static irqreturn_t ftr_handle_notify_irq(int xx,
+                                        void *data,
+                                        struct pt_regs *regs)
+{
+       struct gpio_notification *notif = data;
+
+       schedule_work(&notif->work);
+
+       return IRQ_HANDLED;
+}
+
+static int ftr_set_notify(struct gpio_runtime *rt,
+                         enum notify_type type,
+                         notify_func_t notify,
+                         void *data)
+{
+       struct gpio_notification *notif;
+       notify_func_t old;
+       int irq;
+       char *name;
+       int err = -EBUSY;
+
+       switch (type) {
+       case AOA_NOTIFY_HEADPHONE:
+               notif = &rt->headphone_notify;
+               name = "headphone-detect";
+               irq = headphone_detect_irq;
+               break;
+       case AOA_NOTIFY_LINE_IN:
+               notif = &rt->line_in_notify;
+               name = "linein-detect";
+               irq = linein_detect_irq;
+               break;
+       case AOA_NOTIFY_LINE_OUT:
+               notif = &rt->line_out_notify;
+               name = "lineout-detect";
+               irq = lineout_detect_irq;
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       if (irq == -1)
+               return -ENODEV;
+
+       mutex_lock(&notif->mutex);
+
+       old = notif->notify;
+
+       if (!old && !notify) {
+               err = 0;
+               goto out_unlock;
+       }
+
+       if (old && notify) {
+               if (old == notify && notif->data == data)
+                       err = 0;
+               goto out_unlock;
+       }
+
+       if (old && !notify)
+               free_irq(irq, notif);
+
+       if (!old && notify) {
+               err = request_irq(irq, ftr_handle_notify_irq, 0, name, notif);
+               if (err)
+                       goto out_unlock;
+       }
+
+       notif->notify = notify;
+       notif->data = data;
+
+       err = 0;
+ out_unlock:
+       mutex_unlock(&notif->mutex);
+       return err;
+}
+
+static int ftr_get_detect(struct gpio_runtime *rt,
+                         enum notify_type type)
+{
+       int gpio, ret, active;
+
+       switch (type) {
+       case AOA_NOTIFY_HEADPHONE:
+               gpio = headphone_detect_gpio;
+               active = headphone_detect_gpio_activestate;
+               break;
+       case AOA_NOTIFY_LINE_IN:
+               gpio = linein_detect_gpio;
+               active = linein_detect_gpio_activestate;
+               break;
+       case AOA_NOTIFY_LINE_OUT:
+               gpio = lineout_detect_gpio;
+               active = lineout_detect_gpio_activestate;
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       if (gpio == -1)
+               return -ENODEV;
+
+       ret = pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, gpio, 0);
+       if (ret < 0)
+               return ret;
+       return ((ret >> 1) & 1) == active;
+}
+
+static struct gpio_methods methods = {
+       .init                   = ftr_gpio_init,
+       .exit                   = ftr_gpio_exit,
+       .all_amps_off           = ftr_gpio_all_amps_off,
+       .all_amps_restore       = ftr_gpio_all_amps_restore,
+       .set_headphone          = ftr_gpio_set_headphone,
+       .set_speakers           = ftr_gpio_set_amp,
+       .set_lineout            = ftr_gpio_set_lineout,
+       .set_hw_reset           = ftr_gpio_set_hw_reset,
+       .get_headphone          = ftr_gpio_get_headphone,
+       .get_speakers           = ftr_gpio_get_amp,
+       .get_lineout            = ftr_gpio_get_lineout,
+       .set_notify             = ftr_set_notify,
+       .get_detect             = ftr_get_detect,
+};
+
+struct gpio_methods *ftr_gpio_methods = &methods;
+EXPORT_SYMBOL_GPL(ftr_gpio_methods);
diff --git a/sound/aoa/core/snd-aoa-gpio-pmf.c b/sound/aoa/core/snd-aoa-gpio-pmf.c
new file mode 100644 (file)
index 0000000..0e9b9bb
--- /dev/null
@@ -0,0 +1,246 @@
+/*
+ * Apple Onboard Audio pmf GPIOs
+ *
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * GPL v2, can be found in COPYING.
+ */
+
+#include <asm/pmac_feature.h>
+#include <asm/pmac_pfunc.h>
+#include "../aoa.h"
+
+#define PMF_GPIO(name, bit)                                    \
+static void pmf_gpio_set_##name(struct gpio_runtime *rt, int on)\
+{                                                              \
+       struct pmf_args args = { .count = 1, .u[0].v = !on };   \
+                                                               \
+       if (unlikely(!rt)) return;                              \
+       pmf_call_function(rt->node, #name "-mute", &args);      \
+       rt->implementation_private &= ~(1<<bit);                \
+       rt->implementation_private |= (!!on << bit);            \
+}                                                              \
+static int pmf_gpio_get_##name(struct gpio_runtime *rt)                \
+{                                                              \
+       if (unlikely(!rt)) return 0;                            \
+       return (rt->implementation_private>>bit)&1;             \
+}
+
+PMF_GPIO(headphone, 0);
+PMF_GPIO(amp, 1);
+PMF_GPIO(lineout, 2);
+
+static void pmf_gpio_set_hw_reset(struct gpio_runtime *rt, int on)
+{
+       struct pmf_args args = { .count = 1, .u[0].v = !!on };
+
+       if (unlikely(!rt)) return;
+       pmf_call_function(rt->node, "hw-reset", &args);
+}
+
+static void pmf_gpio_all_amps_off(struct gpio_runtime *rt)
+{
+       int saved;
+
+       if (unlikely(!rt)) return;
+       saved = rt->implementation_private;
+       pmf_gpio_set_headphone(rt, 0);
+       pmf_gpio_set_amp(rt, 0);
+       pmf_gpio_set_lineout(rt, 0);
+       rt->implementation_private = saved;
+}
+
+static void pmf_gpio_all_amps_restore(struct gpio_runtime *rt)
+{
+       int s;
+
+       if (unlikely(!rt)) return;
+       s = rt->implementation_private;
+       pmf_gpio_set_headphone(rt, (s>>0)&1);
+       pmf_gpio_set_amp(rt, (s>>1)&1);
+       pmf_gpio_set_lineout(rt, (s>>2)&1);
+}
+
+static void pmf_handle_notify(void *data)
+{
+       struct gpio_notification *notif = data;
+
+       mutex_lock(&notif->mutex);
+       if (notif->notify)
+               notif->notify(notif->data);
+       mutex_unlock(&notif->mutex);
+}
+
+static void pmf_gpio_init(struct gpio_runtime *rt)
+{
+       pmf_gpio_all_amps_off(rt);
+       rt->implementation_private = 0;
+       INIT_WORK(&rt->headphone_notify.work, pmf_handle_notify,
+                 &rt->headphone_notify);
+       INIT_WORK(&rt->line_in_notify.work, pmf_handle_notify,
+                 &rt->line_in_notify);
+       INIT_WORK(&rt->line_out_notify.work, pmf_handle_notify,
+                 &rt->line_out_notify);
+       mutex_init(&rt->headphone_notify.mutex);
+       mutex_init(&rt->line_in_notify.mutex);
+       mutex_init(&rt->line_out_notify.mutex);
+}
+
+static void pmf_gpio_exit(struct gpio_runtime *rt)
+{
+       pmf_gpio_all_amps_off(rt);
+       rt->implementation_private = 0;
+
+       if (rt->headphone_notify.gpio_private)
+               pmf_unregister_irq_client(rt->headphone_notify.gpio_private);
+       if (rt->line_in_notify.gpio_private)
+               pmf_unregister_irq_client(rt->line_in_notify.gpio_private);
+       if (rt->line_out_notify.gpio_private)
+               pmf_unregister_irq_client(rt->line_out_notify.gpio_private);
+
+       /* make sure no work is pending before freeing
+        * all things */
+       cancel_delayed_work(&rt->headphone_notify.work);
+       cancel_delayed_work(&rt->line_in_notify.work);
+       cancel_delayed_work(&rt->line_out_notify.work);
+       flush_scheduled_work();
+
+       mutex_destroy(&rt->headphone_notify.mutex);
+       mutex_destroy(&rt->line_in_notify.mutex);
+       mutex_destroy(&rt->line_out_notify.mutex);
+
+       if (rt->headphone_notify.gpio_private)
+               kfree(rt->headphone_notify.gpio_private);
+       if (rt->line_in_notify.gpio_private)
+               kfree(rt->line_in_notify.gpio_private);
+       if (rt->line_out_notify.gpio_private)
+               kfree(rt->line_out_notify.gpio_private);
+}
+
+static void pmf_handle_notify_irq(void *data)
+{
+       struct gpio_notification *notif = data;
+
+       schedule_work(&notif->work);
+}
+
+static int pmf_set_notify(struct gpio_runtime *rt,
+                         enum notify_type type,
+                         notify_func_t notify,
+                         void *data)
+{
+       struct gpio_notification *notif;
+       notify_func_t old;
+       struct pmf_irq_client *irq_client;
+       char *name;
+       int err = -EBUSY;
+
+       switch (type) {
+       case AOA_NOTIFY_HEADPHONE:
+               notif = &rt->headphone_notify;
+               name = "headphone-detect";
+               break;
+       case AOA_NOTIFY_LINE_IN:
+               notif = &rt->line_in_notify;
+               name = "linein-detect";
+               break;
+       case AOA_NOTIFY_LINE_OUT:
+               notif = &rt->line_out_notify;
+               name = "lineout-detect";
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       mutex_lock(&notif->mutex);
+
+       old = notif->notify;
+
+       if (!old && !notify) {
+               err = 0;
+               goto out_unlock;
+       }
+
+       if (old && notify) {
+               if (old == notify && notif->data == data)
+                       err = 0;
+               goto out_unlock;
+       }
+
+       if (old && !notify) {
+               irq_client = notif->gpio_private;
+               pmf_unregister_irq_client(irq_client);
+               kfree(irq_client);
+               notif->gpio_private = NULL;
+       }
+       if (!old && notify) {
+               irq_client = kzalloc(sizeof(struct pmf_irq_client),
+                                    GFP_KERNEL);
+               irq_client->data = notif;
+               irq_client->handler = pmf_handle_notify_irq;
+               irq_client->owner = THIS_MODULE;
+               err = pmf_register_irq_client(rt->node,
+                                             name,
+                                             irq_client);
+               if (err) {
+                       printk(KERN_ERR "snd-aoa: gpio layer failed to"
+                                       " register %s irq (%d)\n", name, err);
+                       kfree(irq_client);
+                       goto out_unlock;
+               }
+               notif->gpio_private = irq_client;
+       }
+       notif->notify = notify;
+       notif->data = data;
+
+       err = 0;
+ out_unlock:
+       mutex_unlock(&notif->mutex);
+       return err;
+}
+
+static int pmf_get_detect(struct gpio_runtime *rt,
+                         enum notify_type type)
+{
+       char *name;
+       int err = -EBUSY, ret;
+       struct pmf_args args = { .count = 1, .u[0].p = &ret };
+
+       switch (type) {
+       case AOA_NOTIFY_HEADPHONE:
+               name = "headphone-detect";
+               break;
+       case AOA_NOTIFY_LINE_IN:
+               name = "linein-detect";
+               break;
+       case AOA_NOTIFY_LINE_OUT:
+               name = "lineout-detect";
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       err = pmf_call_function(rt->node, name, &args);
+       if (err)
+               return err;
+       return ret;
+}
+
+static struct gpio_methods methods = {
+       .init                   = pmf_gpio_init,
+       .exit                   = pmf_gpio_exit,
+       .all_amps_off           = pmf_gpio_all_amps_off,
+       .all_amps_restore       = pmf_gpio_all_amps_restore,
+       .set_headphone          = pmf_gpio_set_headphone,
+       .set_speakers           = pmf_gpio_set_amp,
+       .set_lineout            = pmf_gpio_set_lineout,
+       .set_hw_reset           = pmf_gpio_set_hw_reset,
+       .get_headphone          = pmf_gpio_get_headphone,
+       .get_speakers           = pmf_gpio_get_amp,
+       .get_lineout            = pmf_gpio_get_lineout,
+       .set_notify             = pmf_set_notify,
+       .get_detect             = pmf_get_detect,
+};
+
+struct gpio_methods *pmf_gpio_methods = &methods;
+EXPORT_SYMBOL_GPL(pmf_gpio_methods);
diff --git a/sound/aoa/fabrics/Kconfig b/sound/aoa/fabrics/Kconfig
new file mode 100644 (file)
index 0000000..c3bc770
--- /dev/null
@@ -0,0 +1,12 @@
+config SND_AOA_FABRIC_LAYOUT
+       tristate "layout-id fabric"
+       depends SND_AOA
+       select SND_AOA_SOUNDBUS
+       select SND_AOA_SOUNDBUS_I2S
+       ---help---
+       This enables the layout-id fabric for the Apple Onboard
+       Audio driver, the module holding it all together
+       based on the device-tree's layout-id property.
+       
+       If you are unsure and have a later Apple machine,
+       compile it as a module.
diff --git a/sound/aoa/fabrics/Makefile b/sound/aoa/fabrics/Makefile
new file mode 100644 (file)
index 0000000..55fc5e7
--- /dev/null
@@ -0,0 +1 @@
+obj-$(CONFIG_SND_AOA_FABRIC_LAYOUT) += snd-aoa-fabric-layout.o
diff --git a/sound/aoa/fabrics/snd-aoa-fabric-layout.c b/sound/aoa/fabrics/snd-aoa-fabric-layout.c
new file mode 100644 (file)
index 0000000..04a7238
--- /dev/null
@@ -0,0 +1,1109 @@
+/*
+ * Apple Onboard Audio driver -- layout fabric
+ *
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * GPL v2, can be found in COPYING.
+ *
+ *
+ * This fabric module looks for sound codecs
+ * based on the layout-id property in the device tree.
+ *
+ */
+
+#include <asm/prom.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include "../aoa.h"
+#include "../soundbus/soundbus.h"
+
+MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Layout-ID fabric for snd-aoa");
+
+#define MAX_CODECS_PER_BUS     2
+
+/* These are the connections the layout fabric
+ * knows about. It doesn't really care about the
+ * input ones, but I thought I'd separate them
+ * to give them proper names. The thing is that
+ * Apple usually will distinguish the active output
+ * by GPIOs, while the active input is set directly
+ * on the codec. Hence we here tell the codec what
+ * we think is connected. This information is hard-
+ * coded below ... */
+#define CC_SPEAKERS    (1<<0)
+#define CC_HEADPHONE   (1<<1)
+#define CC_LINEOUT     (1<<2)
+#define CC_DIGITALOUT  (1<<3)
+#define CC_LINEIN      (1<<4)
+#define CC_MICROPHONE  (1<<5)
+#define CC_DIGITALIN   (1<<6)
+/* pretty bogus but users complain...
+ * This is a flag saying that the LINEOUT
+ * should be renamed to HEADPHONE.
+ * be careful with input detection! */
+#define CC_LINEOUT_LABELLED_HEADPHONE  (1<<7)
+
+struct codec_connection {
+       /* CC_ flags from above */
+       int connected;
+       /* codec dependent bit to be set in the aoa_codec.connected field.
+        * This intentionally doesn't have any generic flags because the
+        * fabric has to know the codec anyway and all codecs might have
+        * different connectors */
+       int codec_bit;
+};
+
+struct codec_connect_info {
+       char *name;
+       struct codec_connection *connections;
+};
+
+#define LAYOUT_FLAG_COMBO_LINEOUT_SPDIF        (1<<0)
+
+struct layout {
+       unsigned int layout_id;
+       struct codec_connect_info codecs[MAX_CODECS_PER_BUS];
+       int flags;
+       
+       /* if busname is not assigned, we use 'Master' below,
+        * so that our layout table doesn't need to be filled
+        * too much.
+        * We only assign these two if we expect to find more
+        * than one soundbus, i.e. on those machines with
+        * multiple layout-ids */
+       char *busname;
+       int pcmid;
+};
+
+MODULE_ALIAS("sound-layout-41");
+MODULE_ALIAS("sound-layout-45");
+MODULE_ALIAS("sound-layout-51");
+MODULE_ALIAS("sound-layout-58");
+MODULE_ALIAS("sound-layout-60");
+MODULE_ALIAS("sound-layout-61");
+MODULE_ALIAS("sound-layout-64");
+MODULE_ALIAS("sound-layout-65");
+MODULE_ALIAS("sound-layout-68");
+MODULE_ALIAS("sound-layout-69");
+MODULE_ALIAS("sound-layout-70");
+MODULE_ALIAS("sound-layout-72");
+MODULE_ALIAS("sound-layout-80");
+MODULE_ALIAS("sound-layout-82");
+MODULE_ALIAS("sound-layout-84");
+MODULE_ALIAS("sound-layout-86");
+MODULE_ALIAS("sound-layout-92");
+
+/* onyx with all but microphone connected */
+static struct codec_connection onyx_connections_nomic[] = {
+       {
+               .connected = CC_SPEAKERS | CC_HEADPHONE | CC_LINEOUT,
+               .codec_bit = 0,
+       },
+       {
+               .connected = CC_DIGITALOUT,
+               .codec_bit = 1,
+       },
+       {
+               .connected = CC_LINEIN,
+               .codec_bit = 2,
+       },
+       {} /* terminate array by .connected == 0 */
+};
+
+/* onyx on machines without headphone */
+static struct codec_connection onyx_connections_noheadphones[] = {
+       {
+               .connected = CC_SPEAKERS | CC_LINEOUT |
+                            CC_LINEOUT_LABELLED_HEADPHONE,
+               .codec_bit = 0,
+       },
+       {
+               .connected = CC_DIGITALOUT,
+               .codec_bit = 1,
+       },
+       /* FIXME: are these correct? probably not for all the machines
+        * below ... If not this will need separating. */
+       {
+               .connected = CC_LINEIN,
+               .codec_bit = 2,
+       },
+       {
+               .connected = CC_MICROPHONE,
+               .codec_bit = 3,
+       },
+       {} /* terminate array by .connected == 0 */
+};
+
+/* onyx on machines with real line-out */
+static struct codec_connection onyx_connections_reallineout[] = {
+       {
+               .connected = CC_SPEAKERS | CC_LINEOUT | CC_HEADPHONE,
+               .codec_bit = 0,
+       },
+       {
+               .connected = CC_DIGITALOUT,
+               .codec_bit = 1,
+       },
+       {
+               .connected = CC_LINEIN,
+               .codec_bit = 2,
+       },
+       {} /* terminate array by .connected == 0 */
+};
+
+/* tas on machines without line out */
+static struct codec_connection tas_connections_nolineout[] = {
+       {
+               .connected = CC_SPEAKERS | CC_HEADPHONE,
+               .codec_bit = 0,
+       },
+       {
+               .connected = CC_LINEIN,
+               .codec_bit = 2,
+       },
+       {
+               .connected = CC_MICROPHONE,
+               .codec_bit = 3,
+       },
+       {} /* terminate array by .connected == 0 */
+};
+
+/* tas on machines with neither line out nor line in */
+static struct codec_connection tas_connections_noline[] = {
+       {
+               .connected = CC_SPEAKERS | CC_HEADPHONE,
+               .codec_bit = 0,
+       },
+       {
+               .connected = CC_MICROPHONE,
+               .codec_bit = 3,
+       },
+       {} /* terminate array by .connected == 0 */
+};
+
+/* tas on machines without microphone */
+static struct codec_connection tas_connections_nomic[] = {
+       {
+               .connected = CC_SPEAKERS | CC_HEADPHONE | CC_LINEOUT,
+               .codec_bit = 0,
+       },
+       {
+               .connected = CC_LINEIN,
+               .codec_bit = 2,
+       },
+       {} /* terminate array by .connected == 0 */
+};
+
+/* tas on machines with everything connected */
+static struct codec_connection tas_connections_all[] = {
+       {
+               .connected = CC_SPEAKERS | CC_HEADPHONE | CC_LINEOUT,
+               .codec_bit = 0,
+       },
+       {
+               .connected = CC_LINEIN,
+               .codec_bit = 2,
+       },
+       {
+               .connected = CC_MICROPHONE,
+               .codec_bit = 3,
+       },
+       {} /* terminate array by .connected == 0 */
+};
+
+static struct codec_connection toonie_connections[] = {
+       {
+               .connected = CC_SPEAKERS | CC_HEADPHONE,
+               .codec_bit = 0,
+       },
+       {} /* terminate array by .connected == 0 */
+};
+
+static struct codec_connection topaz_input[] = {
+       {
+               .connected = CC_DIGITALIN,
+               .codec_bit = 0,
+       },
+       {} /* terminate array by .connected == 0 */
+};
+
+static struct codec_connection topaz_output[] = {
+       {
+               .connected = CC_DIGITALOUT,
+               .codec_bit = 1,
+       },
+       {} /* terminate array by .connected == 0 */
+};
+
+static struct codec_connection topaz_inout[] = {
+       {
+               .connected = CC_DIGITALIN,
+               .codec_bit = 0,
+       },
+       {
+               .connected = CC_DIGITALOUT,
+               .codec_bit = 1,
+       },
+       {} /* terminate array by .connected == 0 */
+};
+
+static struct layout layouts[] = {
+       /* last PowerBooks (15" Oct 2005) */
+       { .layout_id = 82,
+         .flags = LAYOUT_FLAG_COMBO_LINEOUT_SPDIF,
+         .codecs[0] = {
+               .name = "onyx",
+               .connections = onyx_connections_noheadphones,
+         },
+         .codecs[1] = {
+               .name = "topaz",
+               .connections = topaz_input,
+         },
+       },
+       /* PowerMac9,1 */
+       { .layout_id = 60,
+         .codecs[0] = {
+               .name = "onyx",
+               .connections = onyx_connections_reallineout,
+         },
+       },
+       /* PowerMac9,1 */
+       { .layout_id = 61,
+         .codecs[0] = {
+               .name = "topaz",
+               .connections = topaz_input,
+         },
+       },
+       /* PowerBook5,7 */
+       { .layout_id = 64,
+         .flags = LAYOUT_FLAG_COMBO_LINEOUT_SPDIF,
+         .codecs[0] = {
+               .name = "onyx",
+               .connections = onyx_connections_noheadphones,
+         },
+       },
+       /* PowerBook5,7 */
+       { .layout_id = 65,
+         .codecs[0] = {
+               .name = "topaz",
+               .connections = topaz_input,
+         },
+       },
+       /* PowerBook5,9 [17" Oct 2005] */
+       { .layout_id = 84,
+         .flags = LAYOUT_FLAG_COMBO_LINEOUT_SPDIF,
+         .codecs[0] = {
+               .name = "onyx",
+               .connections = onyx_connections_noheadphones,
+         },
+         .codecs[1] = {
+               .name = "topaz",
+               .connections = topaz_input,
+         },
+       },
+       /* PowerMac8,1 */
+       { .layout_id = 45,
+         .codecs[0] = {
+               .name = "onyx",
+               .connections = onyx_connections_noheadphones,
+         },
+         .codecs[1] = {
+               .name = "topaz",
+               .connections = topaz_input,
+         },
+       },
+       /* Quad PowerMac (analog in, analog/digital out) */
+       { .layout_id = 68,
+         .codecs[0] = {
+               .name = "onyx",
+               .connections = onyx_connections_nomic,
+         },
+       },
+       /* Quad PowerMac (digital in) */
+       { .layout_id = 69,
+         .codecs[0] = {
+               .name = "topaz",
+               .connections = topaz_input,
+         },
+         .busname = "digital in", .pcmid = 1 },
+       /* Early 2005 PowerBook (PowerBook 5,6) */
+       { .layout_id = 70,
+         .codecs[0] = {
+               .name = "tas",
+               .connections = tas_connections_nolineout,
+         },
+       },
+       /* PowerBook 5,4 */
+       { .layout_id = 51,
+         .codecs[0] = {
+               .name = "tas",
+               .connections = tas_connections_nolineout,
+         },
+       },
+       /* PowerBook6,7 */
+       { .layout_id = 80,
+         .codecs[0] = {
+               .name = "tas",
+               .connections = tas_connections_noline,
+         },
+       },
+       /* PowerBook6,8 */
+       { .layout_id = 72,
+         .codecs[0] = {
+               .name = "tas",
+               .connections = tas_connections_nolineout,
+         },
+       },
+       /* PowerMac8,2 */
+       { .layout_id = 86,
+         .codecs[0] = {
+               .name = "onyx",
+               .connections = onyx_connections_nomic,
+         },
+         .codecs[1] = {
+               .name = "topaz",
+               .connections = topaz_input,
+         },
+       },
+       /* PowerBook6,7 */
+       { .layout_id = 92,
+         .codecs[0] = {
+               .name = "tas",
+               .connections = tas_connections_nolineout,
+         },
+       },
+       /* PowerMac10,1 (Mac Mini) */
+       { .layout_id = 58,
+         .codecs[0] = {
+               .name = "toonie",
+               .connections = toonie_connections,
+         },
+       },
+       /* unknown, untested, but this comes from Apple */
+       { .layout_id = 41,
+         .codecs[0] = {
+               .name = "tas",
+               .connections = tas_connections_all,
+         },
+       },
+       { .layout_id = 36,
+         .codecs[0] = {
+               .name = "tas",
+               .connections = tas_connections_nomic,
+         },
+         .codecs[1] = {
+               .name = "topaz",
+               .connections = topaz_inout,
+         },
+       },
+       { .layout_id = 47,
+         .codecs[0] = {
+               .name = "onyx",
+               .connections = onyx_connections_noheadphones,
+         },
+       },
+       { .layout_id = 48,
+         .codecs[0] = {
+               .name = "topaz",
+               .connections = topaz_input,
+         },
+       },
+       { .layout_id = 49,
+         .codecs[0] = {
+               .name = "onyx",
+               .connections = onyx_connections_nomic,
+         },
+       },
+       { .layout_id = 50,
+         .codecs[0] = {
+               .name = "topaz",
+               .connections = topaz_input,
+         },
+       },
+       { .layout_id = 56,
+         .codecs[0] = {
+               .name = "onyx",
+               .connections = onyx_connections_noheadphones,
+         },
+       },
+       { .layout_id = 57,
+         .codecs[0] = {
+               .name = "topaz",
+               .connections = topaz_input,
+         },
+       },
+       { .layout_id = 62,
+         .codecs[0] = {
+               .name = "onyx",
+               .connections = onyx_connections_noheadphones,
+         },
+         .codecs[1] = {
+               .name = "topaz",
+               .connections = topaz_output,
+         },
+       },
+       { .layout_id = 66,
+         .codecs[0] = {
+               .name = "onyx",
+               .connections = onyx_connections_noheadphones,
+         },
+       },
+       { .layout_id = 67,
+         .codecs[0] = {
+               .name = "topaz",
+               .connections = topaz_input,
+         },
+       },
+       { .layout_id = 76,
+         .codecs[0] = {
+               .name = "tas",
+               .connections = tas_connections_nomic,
+         },
+         .codecs[1] = {
+               .name = "topaz",
+               .connections = topaz_inout,
+         },
+       },
+       { .layout_id = 90,
+         .codecs[0] = {
+               .name = "tas",
+               .connections = tas_connections_noline,
+         },
+       },
+       { .layout_id = 94,
+         .codecs[0] = {
+               .name = "onyx",
+               /* but it has an external mic?? how to select? */
+               .connections = onyx_connections_noheadphones,
+         },
+       },
+       { .layout_id = 96,
+         .codecs[0] = {
+               .name = "onyx",
+               .connections = onyx_connections_noheadphones,
+         },
+       },
+       { .layout_id = 98,
+         .codecs[0] = {
+               .name = "toonie",
+               .connections = toonie_connections,
+         },
+       },
+       { .layout_id = 100,
+         .codecs[0] = {
+               .name = "topaz",
+               .connections = topaz_input,
+         },
+         .codecs[1] = {
+               .name = "onyx",
+               .connections = onyx_connections_noheadphones,
+         },
+       },
+       {}
+};
+
+static struct layout *find_layout_by_id(unsigned int id)
+{
+       struct layout *l;
+
+       l = layouts;
+       while (l->layout_id) {
+               if (l->layout_id == id)
+                       return l;
+               l++;
+       }
+       return NULL;
+}
+
+static void use_layout(struct layout *l)
+{
+       int i;
+
+       for (i=0; i<MAX_CODECS_PER_BUS; i++) {
+               if (l->codecs[i].name) {
+                       request_module("snd-aoa-codec-%s", l->codecs[i].name);
+               }
+       }
+       /* now we wait for the codecs to call us back */
+}
+
+struct layout_dev;
+
+struct layout_dev_ptr {
+       struct layout_dev *ptr;
+};
+
+struct layout_dev {
+       struct list_head list;
+       struct soundbus_dev *sdev;
+       struct device_node *sound;
+       struct aoa_codec *codecs[MAX_CODECS_PER_BUS];
+       struct layout *layout;
+       struct gpio_runtime gpio;
+
+       /* we need these for headphone/lineout detection */
+       struct snd_kcontrol *headphone_ctrl;
+       struct snd_kcontrol *lineout_ctrl;
+       struct snd_kcontrol *speaker_ctrl;
+       struct snd_kcontrol *headphone_detected_ctrl;
+       struct snd_kcontrol *lineout_detected_ctrl;
+
+       struct layout_dev_ptr selfptr_headphone;
+       struct layout_dev_ptr selfptr_lineout;
+
+       u32 have_lineout_detect:1,
+           have_headphone_detect:1,
+           switch_on_headphone:1,
+           switch_on_lineout:1;
+};
+
+static LIST_HEAD(layouts_list);
+static int layouts_list_items;
+/* this can go away but only if we allow multiple cards,
+ * make the fabric handle all the card stuff, etc... */
+static struct layout_dev *layout_device;
+
+static int control_info(struct snd_kcontrol *kcontrol,
+                       struct snd_ctl_elem_info *uinfo)
+{
+       uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+       uinfo->count = 1;
+       uinfo->value.integer.min = 0;
+       uinfo->value.integer.max = 1;
+       return 0;
+}
+
+#define AMP_CONTROL(n, description)                                    \
+static int n##_control_get(struct snd_kcontrol *kcontrol,              \
+                          struct snd_ctl_elem_value *ucontrol)         \
+{                                                                      \
+       struct gpio_runtime *gpio = snd_kcontrol_chip(kcontrol);        \
+       if (gpio->methods && gpio->methods->get_##n)                    \
+               ucontrol->value.integer.value[0] =                      \
+                       gpio->methods->get_##n(gpio);                   \
+       return 0;                                                       \
+}                                                                      \
+static int n##_control_put(struct snd_kcontrol *kcontrol,              \
+                          struct snd_ctl_elem_value *ucontrol)         \
+{                                                                      \
+       struct gpio_runtime *gpio = snd_kcontrol_chip(kcontrol);        \
+       if (gpio->methods && gpio->methods->get_##n)                    \
+               gpio->methods->set_##n(gpio,                            \
+                       ucontrol->value.integer.value[0]);              \
+       return 1;                                                       \
+}                                                                      \
+static struct snd_kcontrol_new n##_ctl = {                             \
+       .iface = SNDRV_CTL_ELEM_IFACE_MIXER,                            \
+       .name = description,                                            \
+       .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,                      \
+       .info = control_info,                                           \
+       .get = n##_control_get,                                         \
+       .put = n##_control_put,                                         \
+}
+
+AMP_CONTROL(headphone, "Headphone Switch");
+AMP_CONTROL(speakers, "Speakers Switch");
+AMP_CONTROL(lineout, "Line-Out Switch");
+
+static int detect_choice_get(struct snd_kcontrol *kcontrol,
+                            struct snd_ctl_elem_value *ucontrol)
+{
+       struct layout_dev *ldev = snd_kcontrol_chip(kcontrol);
+
+       switch (kcontrol->private_value) {
+       case 0:
+               ucontrol->value.integer.value[0] = ldev->switch_on_headphone;
+               break;
+       case 1:
+               ucontrol->value.integer.value[0] = ldev->switch_on_lineout;
+               break;
+       default:
+               return -ENODEV;
+       }
+       return 0;
+}
+
+static int detect_choice_put(struct snd_kcontrol *kcontrol,
+                            struct snd_ctl_elem_value *ucontrol)
+{
+       struct layout_dev *ldev = snd_kcontrol_chip(kcontrol);
+
+       switch (kcontrol->private_value) {
+       case 0:
+               ldev->switch_on_headphone = !!ucontrol->value.integer.value[0];
+               break;
+       case 1:
+               ldev->switch_on_lineout = !!ucontrol->value.integer.value[0];
+               break;
+       default:
+               return -ENODEV;
+       }
+       return 1;
+}
+
+static struct snd_kcontrol_new headphone_detect_choice = {
+       .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+       .name = "Headphone Detect Autoswitch",
+       .info = control_info,
+       .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+       .get = detect_choice_get,
+       .put = detect_choice_put,
+       .private_value = 0,
+};
+
+static struct snd_kcontrol_new lineout_detect_choice = {
+       .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+       .name = "Line-Out Detect Autoswitch",
+       .info = control_info,
+       .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+       .get = detect_choice_get,
+       .put = detect_choice_put,
+       .private_value = 1,
+};
+
+static int detected_get(struct snd_kcontrol *kcontrol,
+                       struct snd_ctl_elem_value *ucontrol)
+{
+       struct layout_dev *ldev = snd_kcontrol_chip(kcontrol);
+       int v;
+
+       switch (kcontrol->private_value) {
+       case 0:
+               v = ldev->gpio.methods->get_detect(&ldev->gpio,
+                                                  AOA_NOTIFY_HEADPHONE);
+               break;
+       case 1:
+               v = ldev->gpio.methods->get_detect(&ldev->gpio,
+                                                  AOA_NOTIFY_LINE_OUT);
+               break;
+       default:
+               return -ENODEV;
+       }
+       ucontrol->value.integer.value[0] = v;
+       return 0;
+}
+
+static struct snd_kcontrol_new headphone_detected = {
+       .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+       .name = "Headphone Detected",
+       .info = control_info,
+       .access = SNDRV_CTL_ELEM_ACCESS_READ,
+       .get = detected_get,
+       .private_value = 0,
+};
+
+static struct snd_kcontrol_new lineout_detected = {
+       .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+       .name = "Line-Out Detected",
+       .info = control_info,
+       .access = SNDRV_CTL_ELEM_ACCESS_READ,
+       .get = detected_get,
+       .private_value = 1,
+};
+
+static int check_codec(struct aoa_codec *codec,
+                      struct layout_dev *ldev,
+                      struct codec_connect_info *cci)
+{
+       u32 *ref;
+       char propname[32];
+       struct codec_connection *cc;
+
+       /* if the codec has a 'codec' node, we require a reference */
+       if (codec->node && (strcmp(codec->node->name, "codec") == 0)) {
+               snprintf(propname, sizeof(propname),
+                        "platform-%s-codec-ref", codec->name);
+               ref = (u32*)get_property(ldev->sound, propname, NULL);
+               if (!ref) {
+                       printk(KERN_INFO "snd-aoa-fabric-layout: "
+                               "required property %s not present\n", propname);
+                       return -ENODEV;
+               }
+               if (*ref != codec->node->linux_phandle) {
+                       printk(KERN_INFO "snd-aoa-fabric-layout: "
+                               "%s doesn't match!\n", propname);
+                       return -ENODEV;
+               }
+       } else {
+               if (layouts_list_items != 1) {
+                       printk(KERN_INFO "snd-aoa-fabric-layout: "
+                               "more than one soundbus, but no references.\n");
+                       return -ENODEV;
+               }
+       }
+       codec->soundbus_dev = ldev->sdev;
+       codec->gpio = &ldev->gpio;
+
+       cc = cci->connections;
+       if (!cc)
+               return -EINVAL;
+
+       printk(KERN_INFO "snd-aoa-fabric-layout: can use this codec\n");
+
+       codec->connected = 0;
+       codec->fabric_data = cc;
+
+       while (cc->connected) {
+               codec->connected |= 1<<cc->codec_bit;
+               cc++;
+       }
+
+       return 0;
+}
+
+static int layout_found_codec(struct aoa_codec *codec)
+{
+       struct layout_dev *ldev;
+       int i;
+
+       list_for_each_entry(ldev, &layouts_list, list) {
+               for (i=0; i<MAX_CODECS_PER_BUS; i++) {
+                       if (!ldev->layout->codecs[i].name)
+                               continue;
+                       if (strcmp(ldev->layout->codecs[i].name, codec->name) == 0) {
+                               if (check_codec(codec,
+                                               ldev,
+                                               &ldev->layout->codecs[i]) == 0)
+                                       return 0;
+                       }
+               }
+       }
+       return -ENODEV;
+}
+
+static void layout_remove_codec(struct aoa_codec *codec)
+{
+       int i;
+       /* here remove the codec from the layout dev's
+        * codec reference */
+
+       codec->soundbus_dev = NULL;
+       codec->gpio = NULL;
+       for (i=0; i<MAX_CODECS_PER_BUS; i++) {
+       }
+}
+
+static void layout_notify(void *data)
+{
+       struct layout_dev_ptr *dptr = data;
+       struct layout_dev *ldev;
+       int v, update;
+       struct snd_kcontrol *detected, *c;
+       struct snd_card *card = aoa_get_card();
+
+       ldev = dptr->ptr;
+       if (data == &ldev->selfptr_headphone) {
+               v = ldev->gpio.methods->get_detect(&ldev->gpio, AOA_NOTIFY_HEADPHONE);
+               detected = ldev->headphone_detected_ctrl;
+               update = ldev->switch_on_headphone;
+               if (update) {
+                       ldev->gpio.methods->set_speakers(&ldev->gpio, !v);
+                       ldev->gpio.methods->set_headphone(&ldev->gpio, v);
+                       ldev->gpio.methods->set_lineout(&ldev->gpio, 0);
+               }
+       } else if (data == &ldev->selfptr_lineout) {
+               v = ldev->gpio.methods->get_detect(&ldev->gpio, AOA_NOTIFY_LINE_OUT);
+               detected = ldev->lineout_detected_ctrl;
+               update = ldev->switch_on_lineout;
+               if (update) {
+                       ldev->gpio.methods->set_speakers(&ldev->gpio, !v);
+                       ldev->gpio.methods->set_headphone(&ldev->gpio, 0);
+                       ldev->gpio.methods->set_lineout(&ldev->gpio, v);
+               }
+       } else
+               return;
+
+       if (detected)
+               snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &detected->id);
+       if (update) {
+               c = ldev->headphone_ctrl;
+               if (c)
+                       snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &c->id);
+               c = ldev->speaker_ctrl;
+               if (c)
+                       snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &c->id);
+               c = ldev->lineout_ctrl;
+               if (c)
+                       snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &c->id);
+       }
+}
+
+static void layout_attached_codec(struct aoa_codec *codec)
+{
+       struct codec_connection *cc;
+       struct snd_kcontrol *ctl;
+       int headphones, lineout;
+       struct layout_dev *ldev = layout_device;
+
+       /* need to add this codec to our codec array! */
+
+       cc = codec->fabric_data;
+
+       headphones = codec->gpio->methods->get_detect(codec->gpio,
+                                                     AOA_NOTIFY_HEADPHONE);
+       lineout = codec->gpio->methods->get_detect(codec->gpio,
+                                                  AOA_NOTIFY_LINE_OUT);
+
+       while (cc->connected) {
+               if (cc->connected & CC_SPEAKERS) {
+                       if (headphones <= 0 && lineout <= 0)
+                               ldev->gpio.methods->set_speakers(codec->gpio, 1);
+                       ctl = snd_ctl_new1(&speakers_ctl, codec->gpio);
+                       ldev->speaker_ctrl = ctl;
+                       aoa_snd_ctl_add(ctl);
+               }
+               if (cc->connected & CC_HEADPHONE) {
+                       if (headphones == 1)
+                               ldev->gpio.methods->set_headphone(codec->gpio, 1);
+                       ctl = snd_ctl_new1(&headphone_ctl, codec->gpio);
+                       ldev->headphone_ctrl = ctl;
+                       aoa_snd_ctl_add(ctl);
+                       ldev->have_headphone_detect =
+                               !ldev->gpio.methods
+                                       ->set_notify(&ldev->gpio,
+                                                    AOA_NOTIFY_HEADPHONE,
+                                                    layout_notify,
+                                                    &ldev->selfptr_headphone);
+                       if (ldev->have_headphone_detect) {
+                               ctl = snd_ctl_new1(&headphone_detect_choice,
+                                                  ldev);
+                               aoa_snd_ctl_add(ctl);
+                               ctl = snd_ctl_new1(&headphone_detected,
+                                                  ldev);
+                               ldev->headphone_detected_ctrl = ctl;
+                               aoa_snd_ctl_add(ctl);
+                       }
+               }
+               if (cc->connected & CC_LINEOUT) {
+                       if (lineout == 1)
+                               ldev->gpio.methods->set_lineout(codec->gpio, 1);
+                       ctl = snd_ctl_new1(&lineout_ctl, codec->gpio);
+                       if (cc->connected & CC_LINEOUT_LABELLED_HEADPHONE)
+                               strlcpy(ctl->id.name,
+                                       "Headphone Switch", sizeof(ctl->id.name));
+                       ldev->lineout_ctrl = ctl;
+                       aoa_snd_ctl_add(ctl);
+                       ldev->have_lineout_detect =
+                               !ldev->gpio.methods
+                                       ->set_notify(&ldev->gpio,
+                                                    AOA_NOTIFY_LINE_OUT,
+                                                    layout_notify,
+                                                    &ldev->selfptr_lineout);
+                       if (ldev->have_lineout_detect) {
+                               ctl = snd_ctl_new1(&lineout_detect_choice,
+                                                  ldev);
+                               if (cc->connected & CC_LINEOUT_LABELLED_HEADPHONE)
+                                       strlcpy(ctl->id.name,
+                                               "Headphone Detect Autoswitch",
+                                               sizeof(ctl->id.name));
+                               aoa_snd_ctl_add(ctl);
+                               ctl = snd_ctl_new1(&lineout_detected,
+                                                  ldev);
+                               if (cc->connected & CC_LINEOUT_LABELLED_HEADPHONE)
+                                       strlcpy(ctl->id.name,
+                                               "Headphone Detected",
+                                               sizeof(ctl->id.name));
+                               ldev->lineout_detected_ctrl = ctl;
+                               aoa_snd_ctl_add(ctl);
+                       }
+               }
+               cc++;
+       }
+       /* now update initial state */
+       if (ldev->have_headphone_detect)
+               layout_notify(&ldev->selfptr_headphone);
+       if (ldev->have_lineout_detect)
+               layout_notify(&ldev->selfptr_lineout);
+}
+
+static struct aoa_fabric layout_fabric = {
+       .name = "SoundByLayout",
+       .owner = THIS_MODULE,
+       .found_codec = layout_found_codec,
+       .remove_codec = layout_remove_codec,
+       .attached_codec = layout_attached_codec,
+};
+
+static int aoa_fabric_layout_probe(struct soundbus_dev *sdev)
+{
+       struct device_node *sound = NULL;
+       unsigned int *layout_id;
+       struct layout *layout;
+       struct layout_dev *ldev = NULL;
+       int err;
+
+       /* hm, currently we can only have one ... */
+       if (layout_device)
+               return -ENODEV;
+
+       /* by breaking out we keep a reference */
+       while ((sound = of_get_next_child(sdev->ofdev.node, sound))) {
+               if (sound->type && strcasecmp(sound->type, "soundchip") == 0)
+                       break;
+       }
+       if (!sound) return -ENODEV;
+
+       layout_id = (unsigned int *) get_property(sound, "layout-id", NULL);
+       if (!layout_id)
+               goto outnodev;
+       printk(KERN_INFO "snd-aoa-fabric-layout: found bus with layout %d ", *layout_id);
+
+       layout = find_layout_by_id(*layout_id);
+       if (!layout) {
+               printk("(no idea how to handle)\n");
+               goto outnodev;
+       }
+
+       ldev = kzalloc(sizeof(struct layout_dev), GFP_KERNEL);
+       if (!ldev)
+               goto outnodev;
+
+       layout_device = ldev;
+       ldev->sdev = sdev;
+       ldev->sound = sound;
+       ldev->layout = layout;
+       ldev->gpio.node = sound->parent;
+       switch (layout->layout_id) {
+       case 41: /* that unknown machine no one seems to have */
+       case 51: /* PowerBook5,4 */
+       case 58: /* Mac Mini */
+               ldev->gpio.methods = ftr_gpio_methods;
+               break;
+       default:
+               ldev->gpio.methods = pmf_gpio_methods;
+       }
+       ldev->selfptr_headphone.ptr = ldev;
+       ldev->selfptr_lineout.ptr = ldev;
+       sdev->ofdev.dev.driver_data = ldev;
+
+       printk("(using)\n");
+       list_add(&ldev->list, &layouts_list);
+       layouts_list_items++;
+
+       /* assign these before registering ourselves, so
+        * callbacks that are done during registration
+        * already have the values */
+       sdev->pcmid = ldev->layout->pcmid;
+       if (ldev->layout->busname) {
+               sdev->pcmname = ldev->layout->busname;
+       } else {
+               sdev->pcmname = "Master";
+       }
+
+       ldev->gpio.methods->init(&ldev->gpio);
+
+       err = aoa_fabric_register(&layout_fabric);
+       if (err && err != -EALREADY) {
+               printk(KERN_INFO "snd-aoa-fabric-layout: can't use,"
+                                " another fabric is active!\n");
+               goto outlistdel;
+       }
+
+       use_layout(layout);
+       ldev->switch_on_headphone = 1;
+       ldev->switch_on_lineout = 1;
+       return 0;
+ outlistdel:
+       /* we won't be using these then... */
+       ldev->gpio.methods->exit(&ldev->gpio);
+       /* reset if we didn't use it */
+       sdev->pcmname = NULL;
+       sdev->pcmid = -1;
+       list_del(&ldev->list);
+       layouts_list_items--;
+ outnodev:
+       if (sound) of_node_put(sound);
+       layout_device = NULL;
+       if (ldev) kfree(ldev);
+       return -ENODEV;
+}
+
+static int aoa_fabric_layout_remove(struct soundbus_dev *sdev)
+{
+       struct layout_dev *ldev = sdev->ofdev.dev.driver_data;
+       int i;
+
+       for (i=0; i<MAX_CODECS_PER_BUS; i++) {
+               if (ldev->codecs[i]) {
+                       aoa_fabric_unlink_codec(ldev->codecs[i]);
+               }
+               ldev->codecs[i] = NULL;
+       }
+       list_del(&ldev->list);
+       layouts_list_items--;
+       of_node_put(ldev->sound);
+
+       ldev->gpio.methods->set_notify(&ldev->gpio,
+                                      AOA_NOTIFY_HEADPHONE,
+                                      NULL,
+                                      NULL);
+       ldev->gpio.methods->set_notify(&ldev->gpio,
+                                      AOA_NOTIFY_LINE_OUT,
+                                      NULL,
+                                      NULL);
+
+       ldev->gpio.methods->exit(&ldev->gpio);
+       layout_device = NULL;
+       kfree(ldev);
+       sdev->pcmid = -1;
+       sdev->pcmname = NULL;
+       return 0;
+}
+
+#ifdef CONFIG_PM
+static int aoa_fabric_layout_suspend(struct soundbus_dev *sdev, pm_message_t state)
+{
+       struct layout_dev *ldev = sdev->ofdev.dev.driver_data;
+
+       printk("aoa_fabric_layout_suspend()\n");
+
+       if (ldev->gpio.methods && ldev->gpio.methods->all_amps_off)
+               ldev->gpio.methods->all_amps_off(&ldev->gpio);
+
+       return 0;
+}
+
+static int aoa_fabric_layout_resume(struct soundbus_dev *sdev)
+{
+       struct layout_dev *ldev = sdev->ofdev.dev.driver_data;
+
+       printk("aoa_fabric_layout_resume()\n");
+
+       if (ldev->gpio.methods && ldev->gpio.methods->all_amps_off)
+               ldev->gpio.methods->all_amps_restore(&ldev->gpio);
+
+       return 0;
+}
+#endif
+
+static struct soundbus_driver aoa_soundbus_driver = {
+       .name = "snd_aoa_soundbus_drv",
+       .owner = THIS_MODULE,
+       .probe = aoa_fabric_layout_probe,
+       .remove = aoa_fabric_layout_remove,
+#ifdef CONFIG_PM
+       .suspend = aoa_fabric_layout_suspend,
+       .resume = aoa_fabric_layout_resume,
+#endif
+};
+
+static int __init aoa_fabric_layout_init(void)
+{
+       int err;
+
+       err = soundbus_register_driver(&aoa_soundbus_driver);
+       if (err)
+               return err;
+       return 0;
+}
+
+static void __exit aoa_fabric_layout_exit(void)
+{
+       soundbus_unregister_driver(&aoa_soundbus_driver);
+       aoa_fabric_unregister(&layout_fabric);
+}
+
+module_init(aoa_fabric_layout_init);
+module_exit(aoa_fabric_layout_exit);
diff --git a/sound/aoa/soundbus/Kconfig b/sound/aoa/soundbus/Kconfig
new file mode 100644 (file)
index 0000000..d532d27
--- /dev/null
@@ -0,0 +1,14 @@
+config SND_AOA_SOUNDBUS
+       tristate "Apple Soundbus support"
+       depends on SOUND && SND_PCM && EXPERIMENTAL
+       ---help---
+       This option enables the generic driver for the soundbus
+       support on Apple machines.
+       
+       It is required for the sound bus implementations.
+
+config SND_AOA_SOUNDBUS_I2S
+       tristate "I2S bus support"
+       depends on SND_AOA_SOUNDBUS && PCI
+       ---help---
+       This option enables support for Apple I2S busses.
diff --git a/sound/aoa/soundbus/Makefile b/sound/aoa/soundbus/Makefile
new file mode 100644 (file)
index 0000000..0e61f5a
--- /dev/null
@@ -0,0 +1,3 @@
+obj-$(CONFIG_SND_AOA_SOUNDBUS) += snd-aoa-soundbus.o
+snd-aoa-soundbus-objs := core.o sysfs.o
+obj-$(CONFIG_SND_AOA_SOUNDBUS_I2S) += i2sbus/
diff --git a/sound/aoa/soundbus/core.c b/sound/aoa/soundbus/core.c
new file mode 100644 (file)
index 0000000..abe84a7
--- /dev/null
@@ -0,0 +1,250 @@
+/*
+ * soundbus
+ *
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * GPL v2, can be found in COPYING.
+ */
+
+#include <linux/module.h>
+#include "soundbus.h"
+
+MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Apple Soundbus");
+
+struct soundbus_dev *soundbus_dev_get(struct soundbus_dev *dev)
+{
+       struct device *tmp;
+
+       if (!dev)
+               return NULL;
+       tmp = get_device(&dev->ofdev.dev);
+       if (tmp)
+               return to_soundbus_device(tmp);
+       else
+               return NULL;
+}
+EXPORT_SYMBOL_GPL(soundbus_dev_get);
+
+void soundbus_dev_put(struct soundbus_dev *dev)
+{
+       if (dev)
+               put_device(&dev->ofdev.dev);
+}
+EXPORT_SYMBOL_GPL(soundbus_dev_put);
+
+static int soundbus_probe(struct device *dev)
+{
+       int error = -ENODEV;
+       struct soundbus_driver *drv;
+       struct soundbus_dev *soundbus_dev;
+
+       drv = to_soundbus_driver(dev->driver);
+       soundbus_dev = to_soundbus_device(dev);
+
+       if (!drv->probe)
+               return error;
+
+       soundbus_dev_get(soundbus_dev);
+
+       error = drv->probe(soundbus_dev);
+       if (error)
+               soundbus_dev_put(soundbus_dev);
+
+       return error;
+}
+
+
+static int soundbus_uevent(struct device *dev, char **envp, int num_envp,
+                          char *buffer, int buffer_size)
+{
+       struct soundbus_dev * soundbus_dev;
+       struct of_device * of;
+       char *scratch, *compat, *compat2;
+       int i = 0;
+       int length, cplen, cplen2, seen = 0;
+
+       if (!dev)
+               return -ENODEV;
+
+       soundbus_dev = to_soundbus_device(dev);
+       if (!soundbus_dev)
+               return -ENODEV;
+
+       of = &soundbus_dev->ofdev;
+
+       /* stuff we want to pass to /sbin/hotplug */
+       envp[i++] = scratch = buffer;
+       length = scnprintf (scratch, buffer_size, "OF_NAME=%s", of->node->name);
+       ++length;
+       buffer_size -= length;
+       if ((buffer_size <= 0) || (i >= num_envp))
+               return -ENOMEM;
+       scratch += length;
+
+       envp[i++] = scratch;
+       length = scnprintf (scratch, buffer_size, "OF_TYPE=%s", of->node->type);
+       ++length;
+       buffer_size -= length;
+       if ((buffer_size <= 0) || (i >= num_envp))
+               return -ENOMEM;
+       scratch += length;
+
+       /* Since the compatible field can contain pretty much anything
+        * it's not really legal to split it out with commas. We split it
+        * up using a number of environment variables instead. */
+
+       compat = (char *) get_property(of->node, "compatible", &cplen);
+       compat2 = compat;
+       cplen2= cplen;
+       while (compat && cplen > 0) {
+               envp[i++] = scratch;
+               length = scnprintf (scratch, buffer_size,
+                                    "OF_COMPATIBLE_%d=%s", seen, compat);
+               ++length;
+               buffer_size -= length;
+               if ((buffer_size <= 0) || (i >= num_envp))
+                       return -ENOMEM;
+               scratch += length;
+               length = strlen (compat) + 1;
+               compat += length;
+               cplen -= length;
+               seen++;
+       }
+
+       envp[i++] = scratch;
+       length = scnprintf (scratch, buffer_size, "OF_COMPATIBLE_N=%d", seen);
+       ++length;
+       buffer_size -= length;
+       if ((buffer_size <= 0) || (i >= num_envp))
+               return -ENOMEM;
+       scratch += length;
+
+       envp[i++] = scratch;
+       length = scnprintf (scratch, buffer_size, "MODALIAS=%s",
+                       soundbus_dev->modalias);
+
+       buffer_size -= length;
+       if ((buffer_size <= 0) || (i >= num_envp))
+               return -ENOMEM;
+
+       envp[i] = NULL;
+
+       return 0;
+}
+
+static int soundbus_device_remove(struct device *dev)
+{
+       struct soundbus_dev * soundbus_dev = to_soundbus_device(dev);
+       struct soundbus_driver * drv = to_soundbus_driver(dev->driver);
+
+       if (dev->driver && drv->remove)
+               drv->remove(soundbus_dev);
+       soundbus_dev_put(soundbus_dev);
+
+       return 0;
+}
+
+static void soundbus_device_shutdown(struct device *dev)
+{
+       struct soundbus_dev * soundbus_dev = to_soundbus_device(dev);
+       struct soundbus_driver * drv = to_soundbus_driver(dev->driver);
+
+       if (dev->driver && drv->shutdown)
+               drv->shutdown(soundbus_dev);
+}
+
+#ifdef CONFIG_PM
+
+static int soundbus_device_suspend(struct device *dev, pm_message_t state)
+{
+       struct soundbus_dev * soundbus_dev = to_soundbus_device(dev);
+       struct soundbus_driver * drv = to_soundbus_driver(dev->driver);
+
+       if (dev->driver && drv->suspend)
+               return drv->suspend(soundbus_dev, state);
+       return 0;
+}
+
+static int soundbus_device_resume(struct device * dev)
+{
+       struct soundbus_dev * soundbus_dev = to_soundbus_device(dev);
+       struct soundbus_driver * drv = to_soundbus_driver(dev->driver);
+
+       if (dev->driver && drv->resume)
+               return drv->resume(soundbus_dev);
+       return 0;
+}
+
+#endif /* CONFIG_PM */
+
+extern struct device_attribute soundbus_dev_attrs[];
+
+static struct bus_type soundbus_bus_type = {
+       .name           = "aoa-soundbus",
+       .probe          = soundbus_probe,
+       .uevent         = soundbus_uevent,
+       .remove         = soundbus_device_remove,
+       .shutdown       = soundbus_device_shutdown,
+#ifdef CONFIG_PM
+       .suspend        = soundbus_device_suspend,
+       .resume         = soundbus_device_resume,
+#endif
+       .dev_attrs      = soundbus_dev_attrs,
+};
+
+static int __init soundbus_init(void)
+{
+       return bus_register(&soundbus_bus_type);
+}
+
+static void __exit soundbus_exit(void)
+{
+       bus_unregister(&soundbus_bus_type);
+}
+
+int soundbus_add_one(struct soundbus_dev *dev)
+{
+       static int devcount;
+
+       /* sanity checks */
+       if (!dev->attach_codec ||
+           !dev->ofdev.node ||
+           dev->pcmname ||
+           dev->pcmid != -1) {
+               printk(KERN_ERR "soundbus: adding device failed sanity check!\n");
+               return -EINVAL;
+       }
+
+       snprintf(dev->ofdev.dev.bus_id, BUS_ID_SIZE, "soundbus:%x", ++devcount);
+       dev->ofdev.dev.bus = &soundbus_bus_type;
+       return of_device_register(&dev->ofdev);
+}
+EXPORT_SYMBOL_GPL(soundbus_add_one);
+
+void soundbus_remove_one(struct soundbus_dev *dev)
+{
+       of_device_unregister(&dev->ofdev);
+}
+EXPORT_SYMBOL_GPL(soundbus_remove_one);
+
+int soundbus_register_driver(struct soundbus_driver *drv)
+{
+       /* initialize common driver fields */
+       drv->driver.name = drv->name;
+       drv->driver.bus = &soundbus_bus_type;
+
+       /* register with core */
+       return driver_register(&drv->driver);
+}
+EXPORT_SYMBOL_GPL(soundbus_register_driver);
+
+void soundbus_unregister_driver(struct soundbus_driver *drv)
+{
+       driver_unregister(&drv->driver);
+}
+EXPORT_SYMBOL_GPL(soundbus_unregister_driver);
+
+module_init(soundbus_init);
+module_exit(soundbus_exit);
diff --git a/sound/aoa/soundbus/i2sbus/Makefile b/sound/aoa/soundbus/i2sbus/Makefile
new file mode 100644 (file)
index 0000000..e57a5cf
--- /dev/null
@@ -0,0 +1,2 @@
+obj-$(CONFIG_SND_AOA_SOUNDBUS_I2S) += snd-aoa-i2sbus.o
+snd-aoa-i2sbus-objs := i2sbus-core.o i2sbus-pcm.o i2sbus-control.o
diff --git a/sound/aoa/soundbus/i2sbus/i2sbus-control.c b/sound/aoa/soundbus/i2sbus/i2sbus-control.c
new file mode 100644 (file)
index 0000000..f504079
--- /dev/null
@@ -0,0 +1,192 @@
+/*
+ * i2sbus driver -- bus control routines
+ *
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * GPL v2, can be found in COPYING.
+ */
+
+#include <asm/io.h>
+#include <linux/delay.h>
+#include <asm/prom.h>
+#include <asm/macio.h>
+#include <asm/pmac_feature.h>
+#include <asm/pmac_pfunc.h>
+#include "i2sbus.h"
+
+int i2sbus_control_init(struct macio_dev* dev, struct i2sbus_control **c)
+{
+       *c = kzalloc(sizeof(struct i2sbus_control), GFP_KERNEL);
+       if (!*c)
+               return -ENOMEM;
+
+       INIT_LIST_HEAD(&(*c)->list);
+
+       if (of_address_to_resource(dev->ofdev.node, 0, &(*c)->rsrc))
+               goto err;
+       /* we really should be using feature calls instead of mapping
+        * these registers. It's safe for now since no one else is
+        * touching them... */
+       (*c)->controlregs = ioremap((*c)->rsrc.start,
+                                   sizeof(struct i2s_control_regs));
+       if (!(*c)->controlregs)
+               goto err;
+
+       return 0;
+ err:
+       kfree(*c);
+       *c = NULL;
+       return -ENODEV;
+}
+
+void i2sbus_control_destroy(struct i2sbus_control *c)
+{
+       iounmap(c->controlregs);
+       kfree(c);
+}
+
+/* this is serialised externally */
+int i2sbus_control_add_dev(struct i2sbus_control *c,
+                          struct i2sbus_dev *i2sdev)
+{
+       struct device_node *np;
+
+       np = i2sdev->sound.ofdev.node;
+       i2sdev->enable = pmf_find_function(np, "enable");
+       i2sdev->cell_enable = pmf_find_function(np, "cell-enable");
+       i2sdev->clock_enable = pmf_find_function(np, "clock-enable");
+       i2sdev->cell_disable = pmf_find_function(np, "cell-disable");
+       i2sdev->clock_disable = pmf_find_function(np, "clock-disable");
+
+       /* if the bus number is not 0 or 1 we absolutely need to use
+        * the platform functions -- there's nothing in Darwin that
+        * would allow seeing a system behind what the FCRs are then,
+        * and I don't want to go parsing a bunch of platform functions
+        * by hand to try finding a system... */
+       if (i2sdev->bus_number != 0 && i2sdev->bus_number != 1 &&
+           (!i2sdev->enable ||
+            !i2sdev->cell_enable || !i2sdev->clock_enable ||
+            !i2sdev->cell_disable || !i2sdev->clock_disable)) {
+               pmf_put_function(i2sdev->enable);
+               pmf_put_function(i2sdev->cell_enable);
+               pmf_put_function(i2sdev->clock_enable);
+               pmf_put_function(i2sdev->cell_disable);
+               pmf_put_function(i2sdev->clock_disable);
+               return -ENODEV;
+       }
+
+       list_add(&i2sdev->item, &c->list);
+
+       return 0;
+}
+
+void i2sbus_control_remove_dev(struct i2sbus_control *c,
+                              struct i2sbus_dev *i2sdev)
+{
+       /* this is serialised externally */
+       list_del(&i2sdev->item);
+       if (list_empty(&c->list))
+               i2sbus_control_destroy(c);
+}
+
+int i2sbus_control_enable(struct i2sbus_control *c,
+                         struct i2sbus_dev *i2sdev)
+{
+       struct pmf_args args = { .count = 0 };
+       int cc;
+
+       if (i2sdev->enable)
+               return pmf_call_one(i2sdev->enable, &args);
+
+       switch (i2sdev->bus_number) {
+       case 0:
+               cc = in_le32(&c->controlregs->cell_control);
+               out_le32(&c->controlregs->cell_control, cc | CTRL_CLOCK_INTF_0_ENABLE);
+               break;
+       case 1:
+               cc = in_le32(&c->controlregs->cell_control);
+               out_le32(&c->controlregs->cell_control, cc | CTRL_CLOCK_INTF_1_ENABLE);
+               break;
+       default:
+               return -ENODEV;
+       }
+       return 0;
+}
+
+int i2sbus_control_cell(struct i2sbus_control *c,
+                       struct i2sbus_dev *i2sdev,
+                       int enable)
+{
+       struct pmf_args args = { .count = 0 };
+       int cc;
+
+       switch (enable) {
+       case 0:
+               if (i2sdev->cell_disable)
+                       return pmf_call_one(i2sdev->cell_disable, &args);
+               break;
+       case 1:
+               if (i2sdev->cell_enable)
+                       return pmf_call_one(i2sdev->cell_enable, &args);
+               break;
+       default:
+               printk(KERN_ERR "i2sbus: INVALID CELL ENABLE VALUE\n");
+               return -ENODEV;
+       }
+       switch (i2sdev->bus_number) {
+       case 0:
+               cc = in_le32(&c->controlregs->cell_control);
+               cc &= ~CTRL_CLOCK_CELL_0_ENABLE;
+               cc |= enable * CTRL_CLOCK_CELL_0_ENABLE;
+               out_le32(&c->controlregs->cell_control, cc);
+               break;
+       case 1:
+               cc = in_le32(&c->controlregs->cell_control);
+               cc &= ~CTRL_CLOCK_CELL_1_ENABLE;
+               cc |= enable * CTRL_CLOCK_CELL_1_ENABLE;
+               out_le32(&c->controlregs->cell_control, cc);
+               break;
+       default:
+               return -ENODEV;
+       }
+       return 0;
+}
+
+int i2sbus_control_clock(struct i2sbus_control *c,
+                        struct i2sbus_dev *i2sdev,
+                        int enable)
+{
+       struct pmf_args args = { .count = 0 };
+       int cc;
+
+       switch (enable) {
+       case 0:
+               if (i2sdev->clock_disable)
+                       return pmf_call_one(i2sdev->clock_disable, &args);
+               break;
+       case 1:
+               if (i2sdev->clock_enable)
+                       return pmf_call_one(i2sdev->clock_enable, &args);
+               break;
+       default:
+               printk(KERN_ERR "i2sbus: INVALID CLOCK ENABLE VALUE\n");
+               return -ENODEV;
+       }
+       switch (i2sdev->bus_number) {
+       case 0:
+               cc = in_le32(&c->controlregs->cell_control);
+               cc &= ~CTRL_CLOCK_CLOCK_0_ENABLE;
+               cc |= enable * CTRL_CLOCK_CLOCK_0_ENABLE;
+               out_le32(&c->controlregs->cell_control, cc);
+               break;
+       case 1:
+               cc = in_le32(&c->controlregs->cell_control);
+               cc &= ~CTRL_CLOCK_CLOCK_1_ENABLE;
+               cc |= enable * CTRL_CLOCK_CLOCK_1_ENABLE;
+               out_le32(&c->controlregs->cell_control, cc);
+               break;
+       default:
+               return -ENODEV;
+       }
+       return 0;
+}
diff --git a/sound/aoa/soundbus/i2sbus/i2sbus-control.h b/sound/aoa/soundbus/i2sbus/i2sbus-control.h
new file mode 100644 (file)
index 0000000..bb05550
--- /dev/null
@@ -0,0 +1,37 @@
+/*
+ * i2sbus driver -- bus register definitions
+ *
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * GPL v2, can be found in COPYING.
+ */
+#ifndef __I2SBUS_CONTROLREGS_H
+#define __I2SBUS_CONTROLREGS_H
+
+/* i2s control registers, at least what we know about them */
+
+#define __PAD(m,n) u8 __pad##m[n]
+#define _PAD(line, n) __PAD(line, n)
+#define PAD(n) _PAD(__LINE__, (n))
+struct i2s_control_regs {
+       PAD(0x38);
+       __le32 fcr0;            /* 0x38 (unknown) */
+       __le32 cell_control;    /* 0x3c (fcr1) */
+       __le32 fcr2;            /* 0x40 (unknown) */
+       __le32 fcr3;            /* 0x44 (fcr3) */
+       __le32 clock_control;   /* 0x48 (unknown) */
+       PAD(4);
+       /* total size: 0x50 bytes */
+}  __attribute__((__packed__));
+
+#define CTRL_CLOCK_CELL_0_ENABLE       (1<<10)
+#define CTRL_CLOCK_CLOCK_0_ENABLE      (1<<12)
+#define CTRL_CLOCK_SWRESET_0           (1<<11)
+#define CTRL_CLOCK_INTF_0_ENABLE       (1<<13)
+
+#define CTRL_CLOCK_CELL_1_ENABLE       (1<<17)
+#define CTRL_CLOCK_CLOCK_1_ENABLE      (1<<18)
+#define CTRL_CLOCK_SWRESET_1           (1<<19)
+#define CTRL_CLOCK_INTF_1_ENABLE       (1<<20)
+
+#endif /* __I2SBUS_CONTROLREGS_H */
diff --git a/sound/aoa/soundbus/i2sbus/i2sbus-core.c b/sound/aoa/soundbus/i2sbus/i2sbus-core.c
new file mode 100644 (file)
index 0000000..f268dac
--- /dev/null
@@ -0,0 +1,387 @@
+/*
+ * i2sbus driver
+ *
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * GPL v2, can be found in COPYING.
+ */
+
+#include <linux/module.h>
+#include <asm/macio.h>
+#include <asm/dbdma.h>
+#include <linux/pci.h>
+#include <linux/interrupt.h>
+#include <sound/driver.h>
+#include <sound/core.h>
+#include <linux/dma-mapping.h>
+#include "../soundbus.h"
+#include "i2sbus.h"
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>");
+MODULE_DESCRIPTION("Apple Soundbus: I2S support");
+/* for auto-loading, declare that we handle this weird
+ * string that macio puts into the relevant device */
+MODULE_ALIAS("of:Ni2sTi2sC");
+
+static struct of_device_id i2sbus_match[] = {
+       { .name = "i2s" },
+       { }
+};
+
+static int alloc_dbdma_descriptor_ring(struct i2sbus_dev *i2sdev,
+                                      struct dbdma_command_mem *r,
+                                      int numcmds)
+{
+       /* one more for rounding */
+       r->size = (numcmds+1) * sizeof(struct dbdma_cmd);
+       /* We use the PCI APIs for now until the generic one gets fixed
+        * enough or until we get some macio-specific versions
+        */
+       r->space = dma_alloc_coherent(
+                       &macio_get_pci_dev(i2sdev->macio)->dev,
+                       r->size,
+                       &r->bus_addr,
+                       GFP_KERNEL);
+
+       if (!r->space) return -ENOMEM;
+
+       memset(r->space, 0, r->size);
+       r->cmds = (void*)DBDMA_ALIGN(r->space);
+       r->bus_cmd_start = r->bus_addr +
+                          (dma_addr_t)((char*)r->cmds - (char*)r->space);
+
+       return 0;
+}
+
+static void free_dbdma_descriptor_ring(struct i2sbus_dev *i2sdev,
+                                      struct dbdma_command_mem *r)
+{
+       if (!r->space) return;
+       
+       dma_free_coherent(&macio_get_pci_dev(i2sdev->macio)->dev,
+                           r->size, r->space, r->bus_addr);
+}
+
+static void i2sbus_release_dev(struct device *dev)
+{
+       struct i2sbus_dev *i2sdev;
+       int i;
+
+       i2sdev = container_of(dev, struct i2sbus_dev, sound.ofdev.dev);
+
+       if (i2sdev->intfregs) iounmap(i2sdev->intfregs);
+       if (i2sdev->out.dbdma) iounmap(i2sdev->out.dbdma);
+       if (i2sdev->in.dbdma) iounmap(i2sdev->in.dbdma);
+       for (i=0;i<3;i++)
+               if (i2sdev->allocated_resource[i])
+                       release_and_free_resource(i2sdev->allocated_resource[i]);
+       free_dbdma_descriptor_ring(i2sdev, &i2sdev->out.dbdma_ring);
+       free_dbdma_descriptor_ring(i2sdev, &i2sdev->in.dbdma_ring);
+       for (i=0;i<3;i++)
+               free_irq(i2sdev->interrupts[i], i2sdev);
+       i2sbus_control_remove_dev(i2sdev->control, i2sdev);
+       mutex_destroy(&i2sdev->lock);
+       kfree(i2sdev);
+}
+
+static irqreturn_t i2sbus_bus_intr(int irq, void *devid, struct pt_regs *regs)
+{
+       struct i2sbus_dev *dev = devid;
+       u32 intreg;
+
+       spin_lock(&dev->low_lock);
+       intreg = in_le32(&dev->intfregs->intr_ctl);
+
+       /* acknowledge interrupt reasons */
+       out_le32(&dev->intfregs->intr_ctl, intreg);
+
+       spin_unlock(&dev->low_lock);
+
+       return IRQ_HANDLED;
+}
+
+static int force;
+module_param(force, int, 0444);
+MODULE_PARM_DESC(force, "Force loading i2sbus even when"
+                       " no layout-id property is present");
+
+/* FIXME: look at device node refcounting */
+static int i2sbus_add_dev(struct macio_dev *macio,
+                         struct i2sbus_control *control,
+                         struct device_node *np)
+{
+       struct i2sbus_dev *dev;
+       struct device_node *child = NULL, *sound = NULL;
+       int i;
+       static const char *rnames[] = { "i2sbus: %s (control)",
+                                       "i2sbus: %s (tx)",
+                                       "i2sbus: %s (rx)" };
+       static irqreturn_t (*ints[])(int irq, void *devid,
+                                    struct pt_regs *regs) = {
+               i2sbus_bus_intr,
+               i2sbus_tx_intr,
+               i2sbus_rx_intr
+       };
+
+       if (strlen(np->name) != 5)
+               return 0;
+       if (strncmp(np->name, "i2s-", 4))
+               return 0;
+
+       if (np->n_intrs != 3)
+               return 0;
+
+       dev = kzalloc(sizeof(struct i2sbus_dev), GFP_KERNEL);
+       if (!dev)
+               return 0;
+
+       i = 0;
+       while ((child = of_get_next_child(np, child))) {
+               if (strcmp(child->name, "sound") == 0) {
+                       i++;
+                       sound = child;
+               }
+       }
+       if (i == 1) {
+               u32 *layout_id;
+               layout_id = (u32*) get_property(sound, "layout-id", NULL);
+               if (layout_id) {
+                       snprintf(dev->sound.modalias, 32,
+                                "sound-layout-%d", *layout_id);
+                       force = 1;
+               }
+       }
+       /* for the time being, until we can handle non-layout-id
+        * things in some fabric, refuse to attach if there is no
+        * layout-id property or we haven't been forced to attach.
+        * When there are two i2s busses and only one has a layout-id,
+        * then this depends on the order, but that isn't important
+        * either as the second one in that case is just a modem. */
+       if (!force) {
+               kfree(dev);
+               return -ENODEV;
+       }
+
+       mutex_init(&dev->lock);
+       spin_lock_init(&dev->low_lock);
+       dev->sound.ofdev.node = np;
+       dev->sound.ofdev.dma_mask = macio->ofdev.dma_mask;
+       dev->sound.ofdev.dev.dma_mask = &dev->sound.ofdev.dma_mask;
+       dev->sound.ofdev.dev.parent = &macio->ofdev.dev;
+       dev->sound.ofdev.dev.release = i2sbus_release_dev;
+       dev->sound.attach_codec = i2sbus_attach_codec;
+       dev->sound.detach_codec = i2sbus_detach_codec;
+       dev->sound.pcmid = -1;
+       dev->macio = macio;
+       dev->control = control;
+       dev->bus_number = np->name[4] - 'a';
+       INIT_LIST_HEAD(&dev->sound.codec_list);
+
+       for (i=0;i<3;i++) {
+               dev->interrupts[i] = -1;
+               snprintf(dev->rnames[i], sizeof(dev->rnames[i]), rnames[i], np->name);
+       }
+       for (i=0;i<3;i++) {
+               if (request_irq(np->intrs[i].line, ints[i], 0, dev->rnames[i], dev))
+                       goto err;
+               dev->interrupts[i] = np->intrs[i].line;
+       }
+
+       for (i=0;i<3;i++) {
+               if (of_address_to_resource(np, i, &dev->resources[i]))
+                       goto err;
+               /* if only we could use our resource dev->resources[i]...
+                * but request_resource doesn't know about parents and
+                * contained resources... */
+               dev->allocated_resource[i] = 
+                       request_mem_region(dev->resources[i].start,
+                                          dev->resources[i].end -
+                                          dev->resources[i].start + 1,
+                                          dev->rnames[i]);
+               if (!dev->allocated_resource[i]) {
+                       printk(KERN_ERR "i2sbus: failed to claim resource %d!\n", i);
+                       goto err;
+               }
+       }
+       /* should do sanity checking here about length of them */
+       dev->intfregs = ioremap(dev->resources[0].start,
+                               dev->resources[0].end-dev->resources[0].start+1);
+       dev->out.dbdma = ioremap(dev->resources[1].start,
+                                dev->resources[1].end-dev->resources[1].start+1);
+       dev->in.dbdma = ioremap(dev->resources[2].start,
+                               dev->resources[2].end-dev->resources[2].start+1);
+       if (!dev->intfregs || !dev->out.dbdma || !dev->in.dbdma)
+               goto err;
+
+       if (alloc_dbdma_descriptor_ring(dev, &dev->out.dbdma_ring,
+                                       MAX_DBDMA_COMMANDS))
+               goto err;
+       if (alloc_dbdma_descriptor_ring(dev, &dev->in.dbdma_ring,
+                                       MAX_DBDMA_COMMANDS))
+               goto err;
+
+       if (i2sbus_control_add_dev(dev->control, dev)) {
+               printk(KERN_ERR "i2sbus: control layer didn't like bus\n");
+               goto err;
+       }
+
+       if (soundbus_add_one(&dev->sound)) {
+               printk(KERN_DEBUG "i2sbus: device registration error!\n");
+               goto err;
+       }
+
+       /* enable this cell */
+       i2sbus_control_cell(dev->control, dev, 1);
+       i2sbus_control_enable(dev->control, dev);
+       i2sbus_control_clock(dev->control, dev, 1);
+
+       return 1;
+ err:
+       for (i=0;i<3;i++)
+               if (dev->interrupts[i] != -1)
+                       free_irq(dev->interrupts[i], dev);
+       free_dbdma_descriptor_ring(dev, &dev->out.dbdma_ring);
+       free_dbdma_descriptor_ring(dev, &dev->in.dbdma_ring);
+       if (dev->intfregs) iounmap(dev->intfregs);
+       if (dev->out.dbdma) iounmap(dev->out.dbdma);
+       if (dev->in.dbdma) iounmap(dev->in.dbdma);
+       for (i=0;i<3;i++)
+               if (dev->allocated_resource[i])
+                       release_and_free_resource(dev->allocated_resource[i]);
+       mutex_destroy(&dev->lock);
+       kfree(dev);
+       return 0;
+}
+
+static int i2sbus_probe(struct macio_dev* dev, const struct of_device_id *match)
+{
+       struct device_node *np = NULL;
+       int got = 0, err;
+       struct i2sbus_control *control = NULL;
+
+       err = i2sbus_control_init(dev, &control);
+       if (err)
+               return err;
+       if (!control) {
+               printk(KERN_ERR "i2sbus_control_init API breakage\n");
+               return -ENODEV;
+       }
+
+       while ((np = of_get_next_child(dev->ofdev.node, np))) {
+               if (device_is_compatible(np, "i2sbus") ||
+                   device_is_compatible(np, "i2s-modem")) {
+                       got += i2sbus_add_dev(dev, control, np);
+               }
+       }
+
+       if (!got) {
+               /* found none, clean up */
+               i2sbus_control_destroy(control);
+               return -ENODEV;
+       }
+
+       dev->ofdev.dev.driver_data = control;
+
+       return 0;
+}
+
+static int i2sbus_remove(struct macio_dev* dev)
+{
+       struct i2sbus_control *control = dev->ofdev.dev.driver_data;
+       struct i2sbus_dev *i2sdev, *tmp;
+
+       list_for_each_entry_safe(i2sdev, tmp, &control->list, item)
+               soundbus_remove_one(&i2sdev->sound);
+
+       return 0;
+}
+
+#ifdef CONFIG_PM
+static int i2sbus_suspend(struct macio_dev* dev, pm_message_t state)
+{
+       struct i2sbus_control *control = dev->ofdev.dev.driver_data;
+       struct codec_info_item *cii;
+       struct i2sbus_dev* i2sdev;
+       int err, ret = 0;
+
+       list_for_each_entry(i2sdev, &control->list, item) {
+               /* Notify Alsa */
+               if (i2sdev->sound.pcm) {
+                       /* Suspend PCM streams */
+                       snd_pcm_suspend_all(i2sdev->sound.pcm);
+                       /* Probably useless as we handle
+                        * power transitions ourselves */
+                       snd_power_change_state(i2sdev->sound.pcm->card,
+                                              SNDRV_CTL_POWER_D3hot);
+               }
+               /* Notify codecs */
+               list_for_each_entry(cii, &i2sdev->sound.codec_list, list) {
+                       err = 0;
+                       if (cii->codec->suspend)
+                               err = cii->codec->suspend(cii, state);
+                       if (err)
+                               ret = err;
+               }
+       }
+       return ret;
+}
+
+static int i2sbus_resume(struct macio_dev* dev)
+{
+       struct i2sbus_control *control = dev->ofdev.dev.driver_data;
+       struct codec_info_item *cii;
+       struct i2sbus_dev* i2sdev;
+       int err, ret = 0;
+
+       list_for_each_entry(i2sdev, &control->list, item) {
+               /* Notify codecs so they can re-initialize */
+               list_for_each_entry(cii, &i2sdev->sound.codec_list, list) {
+                       err = 0;
+                       if (cii->codec->resume)
+                               err = cii->codec->resume(cii);
+                       if (err)
+                               ret = err;
+               }
+               /* Notify Alsa */
+               if (i2sdev->sound.pcm) {
+                       /* Same comment as above, probably useless */
+                       snd_power_change_state(i2sdev->sound.pcm->card,
+                                              SNDRV_CTL_POWER_D0);
+               }
+       }
+
+       return ret;
+}
+#endif /* CONFIG_PM */
+
+static int i2sbus_shutdown(struct macio_dev* dev)
+{
+       return 0;
+}
+
+static struct macio_driver i2sbus_drv = {
+       .name = "soundbus-i2s",
+       .owner = THIS_MODULE,
+       .match_table = i2sbus_match,
+       .probe = i2sbus_probe,
+       .remove = i2sbus_remove,
+#ifdef CONFIG_PM
+       .suspend = i2sbus_suspend,
+       .resume = i2sbus_resume,
+#endif
+       .shutdown = i2sbus_shutdown,
+};
+
+static int __init soundbus_i2sbus_init(void)
+{
+       return macio_register_driver(&i2sbus_drv);
+}
+
+static void __exit soundbus_i2sbus_exit(void)
+{
+       macio_unregister_driver(&i2sbus_drv);
+}
+
+module_init(soundbus_i2sbus_init);
+module_exit(soundbus_i2sbus_exit);
diff --git a/sound/aoa/soundbus/i2sbus/i2sbus-interface.h b/sound/aoa/soundbus/i2sbus/i2sbus-interface.h
new file mode 100644 (file)
index 0000000..c6b5f54
--- /dev/null
@@ -0,0 +1,187 @@
+/*
+ * i2sbus driver -- interface register definitions
+ *
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * GPL v2, can be found in COPYING.
+ */
+#ifndef __I2SBUS_INTERFACE_H
+#define __I2SBUS_INTERFACE_H
+
+/* i2s bus control registers, at least what we know about them */
+
+#define __PAD(m,n) u8 __pad##m[n]
+#define _PAD(line, n) __PAD(line, n)
+#define PAD(n) _PAD(__LINE__, (n))
+struct i2s_interface_regs {
+       __le32 intr_ctl;        /* 0x00 */
+       PAD(12);
+       __le32 serial_format;   /* 0x10 */
+       PAD(12);
+       __le32 codec_msg_out;   /* 0x20 */
+       PAD(12);
+       __le32 codec_msg_in;    /* 0x30 */
+       PAD(12);
+       __le32 frame_count;     /* 0x40 */
+       PAD(12);
+       __le32 frame_match;     /* 0x50 */
+       PAD(12);
+       __le32 data_word_sizes; /* 0x60 */
+       PAD(12);
+       __le32 peak_level_sel;  /* 0x70 */
+       PAD(12);
+       __le32 peak_level_in0;  /* 0x80 */
+       PAD(12);
+       __le32 peak_level_in1;  /* 0x90 */
+       PAD(12);
+       /* total size: 0x100 bytes */
+}  __attribute__((__packed__));
+
+/* interrupt register is just a bitfield with
+ * interrupt enable and pending bits */
+#define I2S_REG_INTR_CTL               0x00
+#      define I2S_INT_FRAME_COUNT              (1<<31)
+#      define I2S_PENDING_FRAME_COUNT          (1<<30)
+#      define I2S_INT_MESSAGE_FLAG             (1<<29)
+#      define I2S_PENDING_MESSAGE_FLAG         (1<<28)
+#      define I2S_INT_NEW_PEAK                 (1<<27)
+#      define I2S_PENDING_NEW_PEAK             (1<<26)
+#      define I2S_INT_CLOCKS_STOPPED           (1<<25)
+#      define I2S_PENDING_CLOCKS_STOPPED       (1<<24)
+#      define I2S_INT_EXTERNAL_SYNC_ERROR      (1<<23)
+#      define I2S_PENDING_EXTERNAL_SYNC_ERROR  (1<<22)
+#      define I2S_INT_EXTERNAL_SYNC_OK         (1<<21)
+#      define I2S_PENDING_EXTERNAL_SYNC_OK     (1<<20)
+#      define I2S_INT_NEW_SAMPLE_RATE          (1<<19)
+#      define I2S_PENDING_NEW_SAMPLE_RATE      (1<<18)
+#      define I2S_INT_STATUS_FLAG              (1<<17)
+#      define I2S_PENDING_STATUS_FLAG          (1<<16)
+
+/* serial format register is more interesting :)
+ * It contains:
+ *  - clock source
+ *  - MClk divisor
+ *  - SClk divisor
+ *  - SClk master flag
+ *  - serial format (sony, i2s 64x, i2s 32x, dav, silabs)
+ *  - external sample frequency interrupt (don't understand)
+ *  - external sample frequency
+ */
+#define I2S_REG_SERIAL_FORMAT          0x10
+/* clock source. You get either 18.432, 45.1584 or 49.1520 MHz */
+#      define I2S_SF_CLOCK_SOURCE_SHIFT        30
+#      define I2S_SF_CLOCK_SOURCE_MASK         (3<<I2S_SF_CLOCK_SOURCE_SHIFT)
+#      define I2S_SF_CLOCK_SOURCE_18MHz        (0<<I2S_SF_CLOCK_SOURCE_SHIFT)
+#      define I2S_SF_CLOCK_SOURCE_45MHz        (1<<I2S_SF_CLOCK_SOURCE_SHIFT)
+#      define I2S_SF_CLOCK_SOURCE_49MHz        (2<<I2S_SF_CLOCK_SOURCE_SHIFT)
+/* also, let's define the exact clock speeds here, in Hz */
+#define I2S_CLOCK_SPEED_18MHz  18432000
+#define I2S_CLOCK_SPEED_45MHz  45158400
+#define I2S_CLOCK_SPEED_49MHz  49152000
+/* MClk is the clock that drives the codec, usually called its 'system clock'.
+ * It is derived by taking only every 'divisor' tick of the clock.
+ */
+#      define I2S_SF_MCLKDIV_SHIFT             24
+#      define I2S_SF_MCLKDIV_MASK              (0x1F<<I2S_SF_MCLKDIV_SHIFT)
+#      define I2S_SF_MCLKDIV_1                 (0x14<<I2S_SF_MCLKDIV_SHIFT)
+#      define I2S_SF_MCLKDIV_3                 (0x13<<I2S_SF_MCLKDIV_SHIFT)
+#      define I2S_SF_MCLKDIV_5                 (0x12<<I2S_SF_MCLKDIV_SHIFT)
+#      define I2S_SF_MCLKDIV_14                (0x0E<<I2S_SF_MCLKDIV_SHIFT)
+#      define I2S_SF_MCLKDIV_OTHER(div)        (((div/2-1)<<I2S_SF_MCLKDIV_SHIFT)&I2S_SF_MCLKDIV_MASK)
+static inline int i2s_sf_mclkdiv(int div, int *out)
+{
+       int d;
+
+       switch(div) {
+       case 1: *out |= I2S_SF_MCLKDIV_1; return 0;
+       case 3: *out |= I2S_SF_MCLKDIV_3; return 0;
+       case 5: *out |= I2S_SF_MCLKDIV_5; return 0;
+       case 14: *out |= I2S_SF_MCLKDIV_14; return 0;
+       default:
+               if (div%2) return -1;
+               d = div/2-1;
+               if (d == 0x14 || d == 0x13 || d == 0x12 || d == 0x0E)
+                       return -1;
+               *out |= I2S_SF_MCLKDIV_OTHER(div);
+               return 0;
+       }
+}
+/* SClk is the clock that drives the i2s wire bus. Note that it is
+ * derived from the MClk above by taking only every 'divisor' tick
+ * of MClk.
+ */
+#      define I2S_SF_SCLKDIV_SHIFT             20
+#      define I2S_SF_SCLKDIV_MASK              (0xF<<I2S_SF_SCLKDIV_SHIFT)
+#      define I2S_SF_SCLKDIV_1                 (8<<I2S_SF_SCLKDIV_SHIFT)
+#      define I2S_SF_SCLKDIV_3                 (9<<I2S_SF_SCLKDIV_SHIFT)
+#      define I2S_SF_SCLKDIV_OTHER(div)        (((div/2-1)<<I2S_SF_SCLKDIV_SHIFT)&I2S_SF_SCLKDIV_MASK)
+static inline int i2s_sf_sclkdiv(int div, int *out)
+{
+       int d;
+
+       switch(div) {
+       case 1: *out |= I2S_SF_SCLKDIV_1; return 0;
+       case 3: *out |= I2S_SF_SCLKDIV_3; return 0;
+       default:
+               if (div%2) return -1;
+               d = div/2-1;
+               if (d == 8 || d == 9) return -1;
+               *out |= I2S_SF_SCLKDIV_OTHER(div);
+               return 0;
+       }
+}
+#      define I2S_SF_SCLK_MASTER               (1<<19)
+/* serial format is the way the data is put to the i2s wire bus */
+#      define I2S_SF_SERIAL_FORMAT_SHIFT       16
+#      define I2S_SF_SERIAL_FORMAT_MASK        (7<<I2S_SF_SERIAL_FORMAT_SHIFT)
+#      define I2S_SF_SERIAL_FORMAT_SONY        (0<<I2S_SF_SERIAL_FORMAT_SHIFT)
+#      define I2S_SF_SERIAL_FORMAT_I2S_64X     (1<<I2S_SF_SERIAL_FORMAT_SHIFT)
+#      define I2S_SF_SERIAL_FORMAT_I2S_32X     (2<<I2S_SF_SERIAL_FORMAT_SHIFT)
+#      define I2S_SF_SERIAL_FORMAT_I2S_DAV     (4<<I2S_SF_SERIAL_FORMAT_SHIFT)
+#      define I2S_SF_SERIAL_FORMAT_I2S_SILABS  (5<<I2S_SF_SERIAL_FORMAT_SHIFT)
+/* unknown */
+#      define I2S_SF_EXT_SAMPLE_FREQ_INT_SHIFT 12
+#      define I2S_SF_EXT_SAMPLE_FREQ_INT_MASK  (0xF<<I2S_SF_SAMPLE_FREQ_INT_SHIFT)
+/* probably gives external frequency? */
+#      define I2S_SF_EXT_SAMPLE_FREQ_MASK      0xFFF
+
+/* used to send codec messages, but how isn't clear */
+#define I2S_REG_CODEC_MSG_OUT          0x20
+
+/* used to receive codec messages, but how isn't clear */
+#define I2S_REG_CODEC_MSG_IN           0x30
+
+/* frame count reg isn't clear to me yet, but probably useful */
+#define I2S_REG_FRAME_COUNT            0x40
+
+/* program to some value, and get interrupt if frame count reaches it */
+#define I2S_REG_FRAME_MATCH            0x50
+
+/* this register describes how the bus transfers data */
+#define I2S_REG_DATA_WORD_SIZES                0x60
+/* number of interleaved input channels */
+#      define I2S_DWS_NUM_CHANNELS_IN_SHIFT    24
+#      define I2S_DWS_NUM_CHANNELS_IN_MASK     (0x1F<<I2S_DWS_NUM_CHANNELS_IN_SHIFT)
+/* word size of input data */
+#      define I2S_DWS_DATA_IN_SIZE_SHIFT       16
+#      define I2S_DWS_DATA_IN_16BIT            (0<<I2S_DWS_DATA_IN_SIZE_SHIFT)
+#      define I2S_DWS_DATA_IN_24BIT            (3<<I2S_DWS_DATA_IN_SIZE_SHIFT)
+/* number of interleaved output channels */
+#      define I2S_DWS_NUM_CHANNELS_OUT_SHIFT   8
+#      define I2S_DWS_NUM_CHANNELS_OUT_MASK    (0x1F<<I2S_DWS_NUM_CHANNELS_OUT_SHIFT)
+/* word size of output data */
+#      define I2S_DWS_DATA_OUT_SIZE_SHIFT      0
+#      define I2S_DWS_DATA_OUT_16BIT           (0<<I2S_DWS_DATA_OUT_SIZE_SHIFT)
+#      define I2S_DWS_DATA_OUT_24BIT           (3<<I2S_DWS_DATA_OUT_SIZE_SHIFT)
+
+
+/* unknown */
+#define I2S_REG_PEAK_LEVEL_SEL         0x70
+
+/* unknown */
+#define I2S_REG_PEAK_LEVEL_IN0         0x80
+
+/* unknown */
+#define I2S_REG_PEAK_LEVEL_IN1         0x90
+
+#endif /* __I2SBUS_INTERFACE_H */
diff --git a/sound/aoa/soundbus/i2sbus/i2sbus-pcm.c b/sound/aoa/soundbus/i2sbus/i2sbus-pcm.c
new file mode 100644 (file)
index 0000000..3049015
--- /dev/null
@@ -0,0 +1,1021 @@
+/*
+ * i2sbus driver -- pcm routines
+ *
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * GPL v2, can be found in COPYING.
+ */
+
+#include <asm/io.h>
+#include <linux/delay.h>
+/* So apparently there's a reason for requiring driver.h
+ * to be included first, even if I don't know it... */
+#include <sound/driver.h>
+#include <sound/core.h>
+#include <asm/macio.h>
+#include <linux/pci.h>
+#include "../soundbus.h"
+#include "i2sbus.h"
+
+static inline void get_pcm_info(struct i2sbus_dev *i2sdev, int in,
+                               struct pcm_info **pi, struct pcm_info **other)
+{
+       if (in) {
+               if (pi)
+                       *pi = &i2sdev->in;
+               if (other)
+                       *other = &i2sdev->out;
+       } else {
+               if (pi)
+                       *pi = &i2sdev->out;
+               if (other)
+                       *other = &i2sdev->in;
+       }
+}
+
+static int clock_and_divisors(int mclk, int sclk, int rate, int *out)
+{
+       /* sclk must be derived from mclk! */
+       if (mclk % sclk)
+               return -1;
+       /* derive sclk register value */
+       if (i2s_sf_sclkdiv(mclk / sclk, out))
+               return -1;
+
+       if (I2S_CLOCK_SPEED_18MHz % (rate * mclk) == 0) {
+               if (!i2s_sf_mclkdiv(I2S_CLOCK_SPEED_18MHz / (rate * mclk), out)) {
+                       *out |= I2S_SF_CLOCK_SOURCE_18MHz;
+                       return 0;
+               }
+       }
+       if (I2S_CLOCK_SPEED_45MHz % (rate * mclk) == 0) {
+               if (!i2s_sf_mclkdiv(I2S_CLOCK_SPEED_45MHz / (rate * mclk), out)) {
+                       *out |= I2S_SF_CLOCK_SOURCE_45MHz;
+                       return 0;
+               }
+       }
+       if (I2S_CLOCK_SPEED_49MHz % (rate * mclk) == 0) {
+               if (!i2s_sf_mclkdiv(I2S_CLOCK_SPEED_49MHz / (rate * mclk), out)) {
+                       *out |= I2S_SF_CLOCK_SOURCE_49MHz;
+                       return 0;
+               }
+       }
+       return -1;
+}
+
+#define CHECK_RATE(rate)                                               \
+       do { if (rates & SNDRV_PCM_RATE_ ##rate) {                      \
+               int dummy;                                              \
+               if (clock_and_divisors(sysclock_factor,                 \
+                                      bus_factor, rate, &dummy))       \
+                       rates &= ~SNDRV_PCM_RATE_ ##rate;               \
+       } } while (0)
+
+static int i2sbus_pcm_open(struct i2sbus_dev *i2sdev, int in)
+{
+       struct pcm_info *pi, *other;
+       struct soundbus_dev *sdev;
+       int masks_inited = 0, err;
+       struct codec_info_item *cii, *rev;
+       struct snd_pcm_hardware *hw;
+       u64 formats = 0;
+       unsigned int rates = 0;
+       struct transfer_info v;
+       int result = 0;
+       int bus_factor = 0, sysclock_factor = 0;
+       int found_this;
+
+       mutex_lock(&i2sdev->lock);
+
+       get_pcm_info(i2sdev, in, &pi, &other);
+
+       hw = &pi->substream->runtime->hw;
+       sdev = &i2sdev->sound;
+
+       if (pi->active) {
+               /* alsa messed up */
+               result = -EBUSY;
+               goto out_unlock;
+       }
+
+       /* we now need to assign the hw */
+       list_for_each_entry(cii, &sdev->codec_list, list) {
+               struct transfer_info *ti = cii->codec->transfers;
+               bus_factor = cii->codec->bus_factor;
+               sysclock_factor = cii->codec->sysclock_factor;
+               while (ti->formats && ti->rates) {
+                       v = *ti;
+                       if (ti->transfer_in == in
+                           && cii->codec->usable(cii, ti, &v)) {
+                               if (masks_inited) {
+                                       formats &= v.formats;
+                                       rates &= v.rates;
+                               } else {
+                                       formats = v.formats;
+                                       rates = v.rates;
+                                       masks_inited = 1;
+                               }
+                       }
+                       ti++;
+               }
+       }
+       if (!masks_inited || !bus_factor || !sysclock_factor) {
+               result = -ENODEV;
+               goto out_unlock;
+       }
+       /* bus dependent stuff */
+       hw->info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
+                  SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_RESUME;
+
+       CHECK_RATE(5512);
+       CHECK_RATE(8000);
+       CHECK_RATE(11025);
+       CHECK_RATE(16000);
+       CHECK_RATE(22050);
+       CHECK_RATE(32000);
+       CHECK_RATE(44100);
+       CHECK_RATE(48000);
+       CHECK_RATE(64000);
+       CHECK_RATE(88200);
+       CHECK_RATE(96000);
+       CHECK_RATE(176400);
+       CHECK_RATE(192000);
+       hw->rates = rates;
+
+       /* well. the codec might want 24 bits only, and we'll
+        * ever only transfer 24 bits, but they are top-aligned!
+        * So for alsa, we claim that we're doing full 32 bit
+        * while in reality we'll ignore the lower 8 bits of
+        * that when doing playback (they're transferred as 0
+        * as far as I know, no codecs we have are 32-bit capable
+        * so I can't really test) and when doing recording we'll
+        * always have those lower 8 bits recorded as 0 */
+       if (formats & SNDRV_PCM_FMTBIT_S24_BE)
+               formats |= SNDRV_PCM_FMTBIT_S32_BE;
+       if (formats & SNDRV_PCM_FMTBIT_U24_BE)
+               formats |= SNDRV_PCM_FMTBIT_U32_BE;
+       /* now mask off what we can support. I suppose we could
+        * also support S24_3LE and some similar formats, but I
+        * doubt there's a codec that would be able to use that,
+        * so we don't support it here. */
+       hw->formats = formats & (SNDRV_PCM_FMTBIT_S16_BE |
+                                SNDRV_PCM_FMTBIT_U16_BE |
+                                SNDRV_PCM_FMTBIT_S32_BE |
+                                SNDRV_PCM_FMTBIT_U32_BE);
+
+       /* we need to set the highest and lowest rate possible.
+        * These are the highest and lowest rates alsa can
+        * support properly in its bitfield.
+        * Below, we'll use that to restrict to the rate
+        * currently in use (if any). */
+       hw->rate_min = 5512;
+       hw->rate_max = 192000;
+       /* if the other stream is active, then we can only
+        * support what it is currently using.
+        * FIXME: I lied. This comment is wrong. We can support
+        * anything that works with the same serial format, ie.
+        * when recording 24 bit sound we can well play 16 bit
+        * sound at the same time iff using the same transfer mode.
+        */
+       if (other->active) {
+               /* FIXME: is this guaranteed by the alsa api? */
+               hw->formats &= (1ULL << i2sdev->format);
+               /* see above, restrict rates to the one we already have */
+               hw->rate_min = i2sdev->rate;
+               hw->rate_max = i2sdev->rate;
+       }
+
+       hw->channels_min = 2;
+       hw->channels_max = 2;
+       /* these are somewhat arbitrary */
+       hw->buffer_bytes_max = 131072;
+       hw->period_bytes_min = 256;
+       hw->period_bytes_max = 16384;
+       hw->periods_min = 3;
+       hw->periods_max = MAX_DBDMA_COMMANDS;
+       list_for_each_entry(cii, &sdev->codec_list, list) {
+               if (cii->codec->open) {
+                       err = cii->codec->open(cii, pi->substream);
+                       if (err) {
+                               result = err;
+                               /* unwind */
+                               found_this = 0;
+                               list_for_each_entry_reverse(rev,
+                                   &sdev->codec_list, list) {
+                                       if (found_this && rev->codec->close) {
+                                               rev->codec->close(rev,
+                                                               pi->substream);
+                                       }
+                                       if (rev == cii)
+                                               found_this = 1;
+                               }
+                               goto out_unlock;
+                       }
+               }
+       }
+
+ out_unlock:
+       mutex_unlock(&i2sdev->lock);
+       return result;
+}
+
+#undef CHECK_RATE
+
+static int i2sbus_pcm_close(struct i2sbus_dev *i2sdev, int in)
+{
+       struct codec_info_item *cii;
+       struct pcm_info *pi;
+       int err = 0, tmp;
+
+       mutex_lock(&i2sdev->lock);
+
+       get_pcm_info(i2sdev, in, &pi, NULL);
+
+       list_for_each_entry(cii, &i2sdev->sound.codec_list, list) {
+               if (cii->codec->close) {
+                       tmp = cii->codec->close(cii, pi->substream);
+                       if (tmp)
+                               err = tmp;
+               }
+       }
+
+       pi->substream = NULL;
+       pi->active = 0;
+       mutex_unlock(&i2sdev->lock);
+       return err;
+}
+
+static int i2sbus_hw_params(struct snd_pcm_substream *substream,
+                           struct snd_pcm_hw_params *params)
+{
+       return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
+}
+
+static int i2sbus_hw_free(struct snd_pcm_substream *substream)
+{
+       snd_pcm_lib_free_pages(substream);
+       return 0;
+}
+
+static int i2sbus_pcm_prepare(struct i2sbus_dev *i2sdev, int in)
+{
+       /* whee. Hard work now. The user has selected a bitrate
+        * and bit format, so now we have to program our
+        * I2S controller appropriately. */
+       struct snd_pcm_runtime *runtime;
+       struct dbdma_cmd *command;
+       int i, periodsize;
+       dma_addr_t offset;
+       struct bus_info bi;
+       struct codec_info_item *cii;
+       int sfr = 0;            /* serial format register */
+       int dws = 0;            /* data word sizes reg */
+       int input_16bit;
+       struct pcm_info *pi, *other;
+       int cnt;
+       int result = 0;
+
+       mutex_lock(&i2sdev->lock);
+
+       get_pcm_info(i2sdev, in, &pi, &other);
+
+       if (pi->dbdma_ring.running) {
+               result = -EBUSY;
+               goto out_unlock;
+       }
+
+       runtime = pi->substream->runtime;
+       pi->active = 1;
+       if (other->active &&
+           ((i2sdev->format != runtime->format)
+            || (i2sdev->rate != runtime->rate))) {
+               result = -EINVAL;
+               goto out_unlock;
+       }
+
+       i2sdev->format = runtime->format;
+       i2sdev->rate = runtime->rate;
+
+       periodsize = snd_pcm_lib_period_bytes(pi->substream);
+       pi->current_period = 0;
+
+       /* generate dbdma command ring first */
+       command = pi->dbdma_ring.cmds;
+       offset = runtime->dma_addr;
+       for (i = 0; i < pi->substream->runtime->periods;
+            i++, command++, offset += periodsize) {
+               memset(command, 0, sizeof(struct dbdma_cmd));
+               command->command =
+                   cpu_to_le16((in ? INPUT_MORE : OUTPUT_MORE) | INTR_ALWAYS);
+               command->phy_addr = cpu_to_le32(offset);
+               command->req_count = cpu_to_le16(periodsize);
+               command->xfer_status = cpu_to_le16(0);
+       }
+       /* last one branches back to first */
+       command--;
+       command->command |= cpu_to_le16(BR_ALWAYS);
+       command->cmd_dep = cpu_to_le32(pi->dbdma_ring.bus_cmd_start);
+
+       /* ok, let's set the serial format and stuff */
+       switch (runtime->format) {
+       /* 16 bit formats */
+       case SNDRV_PCM_FORMAT_S16_BE:
+       case SNDRV_PCM_FORMAT_U16_BE:
+               /* FIXME: if we add different bus factors we need to
+                * do more here!! */
+               bi.bus_factor = 0;
+               list_for_each_entry(cii, &i2sdev->sound.codec_list, list) {
+                       bi.bus_factor = cii->codec->bus_factor;
+                       break;
+               }
+               if (!bi.bus_factor) {
+                       result = -ENODEV;
+                       goto out_unlock;
+               }
+               input_16bit = 1;
+               break;
+       case SNDRV_PCM_FORMAT_S32_BE:
+       case SNDRV_PCM_FORMAT_U32_BE:
+               /* force 64x bus speed, otherwise the data cannot be
+                * transferred quickly enough! */
+               bi.bus_factor = 64;
+               input_16bit = 0;
+               break;
+       default:
+               result = -EINVAL;
+               goto out_unlock;
+       }
+       /* we assume all sysclocks are the same! */
+       list_for_each_entry(cii, &i2sdev->sound.codec_list, list) {
+               bi.sysclock_factor = cii->codec->sysclock_factor;
+               break;
+       }
+
+       if (clock_and_divisors(bi.sysclock_factor,
+                              bi.bus_factor,
+                              runtime->rate,
+                              &sfr) < 0) {
+               result = -EINVAL;
+               goto out_unlock;
+       }
+       switch (bi.bus_factor) {
+       case 32:
+               sfr |= I2S_SF_SERIAL_FORMAT_I2S_32X;
+               break;
+       case 64:
+               sfr |= I2S_SF_SERIAL_FORMAT_I2S_64X;
+               break;
+       }
+       /* FIXME: THIS ASSUMES MASTER ALL THE TIME */
+       sfr |= I2S_SF_SCLK_MASTER;
+
+       list_for_each_entry(cii, &i2sdev->sound.codec_list, list) {
+               int err = 0;
+               if (cii->codec->prepare)
+                       err = cii->codec->prepare(cii, &bi, pi->substream);
+               if (err) {
+                       result = err;
+                       goto out_unlock;
+               }
+       }
+       /* codecs are fine with it, so set our clocks */
+       if (input_16bit)
+               dws =   (2 << I2S_DWS_NUM_CHANNELS_IN_SHIFT) |
+                       (2 << I2S_DWS_NUM_CHANNELS_OUT_SHIFT) |
+                       I2S_DWS_DATA_IN_16BIT | I2S_DWS_DATA_OUT_16BIT;
+       else
+               dws =   (2 << I2S_DWS_NUM_CHANNELS_IN_SHIFT) |
+                       (2 << I2S_DWS_NUM_CHANNELS_OUT_SHIFT) |
+                       I2S_DWS_DATA_IN_24BIT | I2S_DWS_DATA_OUT_24BIT;
+
+       /* early exit if already programmed correctly */
+       /* not locking these is fine since we touch them only in this function */
+       if (in_le32(&i2sdev->intfregs->serial_format) == sfr
+        && in_le32(&i2sdev->intfregs->data_word_sizes) == dws)
+               goto out_unlock;
+
+       /* let's notify the codecs about clocks going away.
+        * For now we only do mastering on the i2s cell... */
+       list_for_each_entry(cii, &i2sdev->sound.codec_list, list)
+               if (cii->codec->switch_clock)
+                       cii->codec->switch_clock(cii, CLOCK_SWITCH_PREPARE_SLAVE);
+
+       i2sbus_control_enable(i2sdev->control, i2sdev);
+       i2sbus_control_cell(i2sdev->control, i2sdev, 1);
+
+       out_le32(&i2sdev->intfregs->intr_ctl, I2S_PENDING_CLOCKS_STOPPED);
+
+       i2sbus_control_clock(i2sdev->control, i2sdev, 0);
+
+       msleep(1);
+
+       /* wait for clock stopped. This can apparently take a while... */
+       cnt = 100;
+       while (cnt-- &&
+           !(in_le32(&i2sdev->intfregs->intr_ctl) & I2S_PENDING_CLOCKS_STOPPED)) {
+               msleep(5);
+       }
+       out_le32(&i2sdev->intfregs->intr_ctl, I2S_PENDING_CLOCKS_STOPPED);
+
+       /* not locking these is fine since we touch them only in this function */
+       out_le32(&i2sdev->intfregs->serial_format, sfr);
+       out_le32(&i2sdev->intfregs->data_word_sizes, dws);
+
+        i2sbus_control_enable(i2sdev->control, i2sdev);
+        i2sbus_control_cell(i2sdev->control, i2sdev, 1);
+        i2sbus_control_clock(i2sdev->control, i2sdev, 1);
+       msleep(1);
+
+       list_for_each_entry(cii, &i2sdev->sound.codec_list, list)
+               if (cii->codec->switch_clock)
+                       cii->codec->switch_clock(cii, CLOCK_SWITCH_SLAVE);
+
+ out_unlock:
+       mutex_unlock(&i2sdev->lock);
+       return result;
+}
+
+static struct dbdma_cmd STOP_CMD = {
+       .command = __constant_cpu_to_le16(DBDMA_STOP),
+};
+
+static int i2sbus_pcm_trigger(struct i2sbus_dev *i2sdev, int in, int cmd)
+{
+       struct codec_info_item *cii;
+       struct pcm_info *pi;
+       int timeout;
+       struct dbdma_cmd tmp;
+       int result = 0;
+       unsigned long flags;
+
+       spin_lock_irqsave(&i2sdev->low_lock, flags);
+
+       get_pcm_info(i2sdev, in, &pi, NULL);
+
+       switch (cmd) {
+       case SNDRV_PCM_TRIGGER_START:
+       case SNDRV_PCM_TRIGGER_RESUME:
+               if (pi->dbdma_ring.running) {
+                       result = -EALREADY;
+                       goto out_unlock;
+               }
+               list_for_each_entry(cii, &i2sdev->sound.codec_list, list)
+                       if (cii->codec->start)
+                               cii->codec->start(cii, pi->substream);
+               pi->dbdma_ring.running = 1;
+
+               /* reset dma engine */
+               out_le32(&pi->dbdma->control,
+                        0 | (RUN | PAUSE | FLUSH | WAKE) << 16);
+               timeout = 100;
+               while (in_le32(&pi->dbdma->status) & RUN && timeout--)
+                       udelay(1);
+               if (timeout <= 0) {
+                       printk(KERN_ERR
+                              "i2sbus: error waiting for dma reset\n");
+                       result = -ENXIO;
+                       goto out_unlock;
+               }
+
+               /* write dma command buffer address to the dbdma chip */
+               out_le32(&pi->dbdma->cmdptr, pi->dbdma_ring.bus_cmd_start);
+               /* post PCI write */
+               mb();
+               (void)in_le32(&pi->dbdma->status);
+
+               /* change first command to STOP */
+               tmp = *pi->dbdma_ring.cmds;
+               *pi->dbdma_ring.cmds = STOP_CMD;
+
+               /* set running state, remember that the first command is STOP */
+               out_le32(&pi->dbdma->control, RUN | (RUN << 16));
+               timeout = 100;
+               /* wait for STOP to be executed */
+               while (in_le32(&pi->dbdma->status) & ACTIVE && timeout--)
+                       udelay(1);
+               if (timeout <= 0) {
+                       printk(KERN_ERR "i2sbus: error waiting for dma stop\n");
+                       result = -ENXIO;
+                       goto out_unlock;
+               }
+               /* again, write dma command buffer address to the dbdma chip,
+                * this time of the first real command */
+               *pi->dbdma_ring.cmds = tmp;
+               out_le32(&pi->dbdma->cmdptr, pi->dbdma_ring.bus_cmd_start);
+               /* post write */
+               mb();
+               (void)in_le32(&pi->dbdma->status);
+
+               /* reset dma engine again */
+               out_le32(&pi->dbdma->control,
+                        0 | (RUN | PAUSE | FLUSH | WAKE) << 16);
+               timeout = 100;
+               while (in_le32(&pi->dbdma->status) & RUN && timeout--)
+                       udelay(1);
+               if (timeout <= 0) {
+                       printk(KERN_ERR
+                              "i2sbus: error waiting for dma reset\n");
+                       result = -ENXIO;
+                       goto out_unlock;
+               }
+
+               /* wake up the chip with the next descriptor */
+               out_le32(&pi->dbdma->control,
+                        (RUN | WAKE) | ((RUN | WAKE) << 16));
+               /* get the frame count  */
+               pi->frame_count = in_le32(&i2sdev->intfregs->frame_count);
+
+               /* off you go! */
+               break;
+       case SNDRV_PCM_TRIGGER_STOP:
+       case SNDRV_PCM_TRIGGER_SUSPEND:
+               if (!pi->dbdma_ring.running) {
+                       result = -EALREADY;
+                       goto out_unlock;
+               }
+
+               /* turn off all relevant bits */
+               out_le32(&pi->dbdma->control,
+                        (RUN | WAKE | FLUSH | PAUSE) << 16);
+               {
+                       /* FIXME: move to own function */
+                       int timeout = 5000;
+                       while ((in_le32(&pi->dbdma->status) & RUN)
+                              && --timeout > 0)
+                               udelay(1);
+                       if (!timeout)
+                               printk(KERN_ERR
+                                      "i2sbus: timed out turning "
+                                      "off dbdma engine!\n");
+               }
+
+               pi->dbdma_ring.running = 0;
+               list_for_each_entry(cii, &i2sdev->sound.codec_list, list)
+                       if (cii->codec->stop)
+                               cii->codec->stop(cii, pi->substream);
+               break;
+       default:
+               result = -EINVAL;
+               goto out_unlock;
+       }
+
+ out_unlock:
+       spin_unlock_irqrestore(&i2sdev->low_lock, flags);
+       return result;
+}
+
+static snd_pcm_uframes_t i2sbus_pcm_pointer(struct i2sbus_dev *i2sdev, int in)
+{
+       struct pcm_info *pi;
+       u32 fc;
+
+       get_pcm_info(i2sdev, in, &pi, NULL);
+
+       fc = in_le32(&i2sdev->intfregs->frame_count);
+       fc = fc - pi->frame_count;
+
+       return (bytes_to_frames(pi->substream->runtime,
+                       pi->current_period *
+                       snd_pcm_lib_period_bytes(pi->substream))
+               + fc) % pi->substream->runtime->buffer_size;
+}
+
+static inline void handle_interrupt(struct i2sbus_dev *i2sdev, int in)
+{
+       struct pcm_info *pi;
+       u32 fc;
+       u32 delta;
+
+       spin_lock(&i2sdev->low_lock);
+       get_pcm_info(i2sdev, in, &pi, NULL);
+
+       if (!pi->dbdma_ring.running) {
+               /* there was still an interrupt pending
+                * while we stopped. or maybe another
+                * processor (not the one that was stopping
+                * the DMA engine) was spinning above
+                * waiting for the lock. */
+               goto out_unlock;
+       }
+
+       fc = in_le32(&i2sdev->intfregs->frame_count);
+       /* a counter overflow does not change the calculation. */
+       delta = fc - pi->frame_count;
+
+       /* update current_period */
+       while (delta >= pi->substream->runtime->period_size) {
+               pi->current_period++;
+               delta = delta - pi->substream->runtime->period_size;
+       }
+
+       if (unlikely(delta)) {
+               /* Some interrupt came late, so check the dbdma.
+                * This special case exists to syncronize the frame_count with
+                * the dbdma transfer, but is hit every once in a while. */
+               int period;
+
+               period = (in_le32(&pi->dbdma->cmdptr)
+                       - pi->dbdma_ring.bus_cmd_start)
+                               / sizeof(struct dbdma_cmd);
+               pi->current_period = pi->current_period
+                                       % pi->substream->runtime->periods;
+
+               while (pi->current_period != period) {
+                       pi->current_period++;
+                       pi->current_period %= pi->substream->runtime->periods;
+                       /* Set delta to zero, as the frame_count value is too
+                        * high (otherwise the code path will not be executed).
+                        * This corrects the fact that the frame_count is too
+                        * low at the beginning due to buffering. */
+                       delta = 0;
+               }
+       }
+
+       pi->frame_count = fc - delta;
+       pi->current_period %= pi->substream->runtime->periods;
+
+       spin_unlock(&i2sdev->low_lock);
+       /* may call _trigger again, hence needs to be unlocked */
+       snd_pcm_period_elapsed(pi->substream);
+       return;
+ out_unlock:
+       spin_unlock(&i2sdev->low_lock);
+}
+
+irqreturn_t i2sbus_tx_intr(int irq, void *devid, struct pt_regs *regs)
+{
+       handle_interrupt((struct i2sbus_dev *)devid, 0);
+       return IRQ_HANDLED;
+}
+
+irqreturn_t i2sbus_rx_intr(int irq, void *devid, struct pt_regs * regs)
+{
+       handle_interrupt((struct i2sbus_dev *)devid, 1);
+       return IRQ_HANDLED;
+}
+
+static int i2sbus_playback_open(struct snd_pcm_substream *substream)
+{
+       struct i2sbus_dev *i2sdev = snd_pcm_substream_chip(substream);
+
+       if (!i2sdev)
+               return -EINVAL;
+       i2sdev->out.substream = substream;
+       return i2sbus_pcm_open(i2sdev, 0);
+}
+
+static int i2sbus_playback_close(struct snd_pcm_substream *substream)
+{
+       struct i2sbus_dev *i2sdev = snd_pcm_substream_chip(substream);
+       int err;
+
+       if (!i2sdev)
+               return -EINVAL;
+       if (i2sdev->out.substream != substream)
+               return -EINVAL;
+       err = i2sbus_pcm_close(i2sdev, 0);
+       if (!err)
+               i2sdev->out.substream = NULL;
+       return err;
+}
+
+static int i2sbus_playback_prepare(struct snd_pcm_substream *substream)
+{
+       struct i2sbus_dev *i2sdev = snd_pcm_substream_chip(substream);
+
+       if (!i2sdev)
+               return -EINVAL;
+       if (i2sdev->out.substream != substream)
+               return -EINVAL;
+       return i2sbus_pcm_prepare(i2sdev, 0);
+}
+
+static int i2sbus_playback_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+       struct i2sbus_dev *i2sdev = snd_pcm_substream_chip(substream);
+
+       if (!i2sdev)
+               return -EINVAL;
+       if (i2sdev->out.substream != substream)
+               return -EINVAL;
+       return i2sbus_pcm_trigger(i2sdev, 0, cmd);
+}
+
+static snd_pcm_uframes_t i2sbus_playback_pointer(struct snd_pcm_substream
+                                                *substream)
+{
+       struct i2sbus_dev *i2sdev = snd_pcm_substream_chip(substream);
+
+       if (!i2sdev)
+               return -EINVAL;
+       if (i2sdev->out.substream != substream)
+               return 0;
+       return i2sbus_pcm_pointer(i2sdev, 0);
+}
+
+static struct snd_pcm_ops i2sbus_playback_ops = {
+       .open =         i2sbus_playback_open,
+       .close =        i2sbus_playback_close,
+       .ioctl =        snd_pcm_lib_ioctl,
+       .hw_params =    i2sbus_hw_params,
+       .hw_free =      i2sbus_hw_free,
+       .prepare =      i2sbus_playback_prepare,
+       .trigger =      i2sbus_playback_trigger,
+       .pointer =      i2sbus_playback_pointer,
+};
+
+static int i2sbus_record_open(struct snd_pcm_substream *substream)
+{
+       struct i2sbus_dev *i2sdev = snd_pcm_substream_chip(substream);
+
+       if (!i2sdev)
+               return -EINVAL;
+       i2sdev->in.substream = substream;
+       return i2sbus_pcm_open(i2sdev, 1);
+}
+
+static int i2sbus_record_close(struct snd_pcm_substream *substream)
+{
+       struct i2sbus_dev *i2sdev = snd_pcm_substream_chip(substream);
+       int err;
+
+       if (!i2sdev)
+               return -EINVAL;
+       if (i2sdev->in.substream != substream)
+               return -EINVAL;
+       err = i2sbus_pcm_close(i2sdev, 1);
+       if (!err)
+               i2sdev->in.substream = NULL;
+       return err;
+}
+
+static int i2sbus_record_prepare(struct snd_pcm_substream *substream)
+{
+       struct i2sbus_dev *i2sdev = snd_pcm_substream_chip(substream);
+
+       if (!i2sdev)
+               return -EINVAL;
+       if (i2sdev->in.substream != substream)
+               return -EINVAL;
+       return i2sbus_pcm_prepare(i2sdev, 1);
+}
+
+static int i2sbus_record_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+       struct i2sbus_dev *i2sdev = snd_pcm_substream_chip(substream);
+
+       if (!i2sdev)
+               return -EINVAL;
+       if (i2sdev->in.substream != substream)
+               return -EINVAL;
+       return i2sbus_pcm_trigger(i2sdev, 1, cmd);
+}
+
+static snd_pcm_uframes_t i2sbus_record_pointer(struct snd_pcm_substream
+                                              *substream)
+{
+       struct i2sbus_dev *i2sdev = snd_pcm_substream_chip(substream);
+
+       if (!i2sdev)
+               return -EINVAL;
+       if (i2sdev->in.substream != substream)
+               return 0;
+       return i2sbus_pcm_pointer(i2sdev, 1);
+}
+
+static struct snd_pcm_ops i2sbus_record_ops = {
+       .open =         i2sbus_record_open,
+       .close =        i2sbus_record_close,
+       .ioctl =        snd_pcm_lib_ioctl,
+       .hw_params =    i2sbus_hw_params,
+       .hw_free =      i2sbus_hw_free,
+       .prepare =      i2sbus_record_prepare,
+       .trigger =      i2sbus_record_trigger,
+       .pointer =      i2sbus_record_pointer,
+};
+
+static void i2sbus_private_free(struct snd_pcm *pcm)
+{
+       struct i2sbus_dev *i2sdev = snd_pcm_chip(pcm);
+       struct codec_info_item *p, *tmp;
+
+       i2sdev->sound.pcm = NULL;
+       i2sdev->out.created = 0;
+       i2sdev->in.created = 0;
+       list_for_each_entry_safe(p, tmp, &i2sdev->sound.codec_list, list) {
+               printk(KERN_ERR "i2sbus: a codec didn't unregister!\n");
+               list_del(&p->list);
+               module_put(p->codec->owner);
+               kfree(p);
+       }
+       soundbus_dev_put(&i2sdev->sound);
+       module_put(THIS_MODULE);
+}
+
+/* FIXME: this function needs an error handling strategy with labels */
+int
+i2sbus_attach_codec(struct soundbus_dev *dev, struct snd_card *card,
+                   struct codec_info *ci, void *data)
+{
+       int err, in = 0, out = 0;
+       struct transfer_info *tmp;
+       struct i2sbus_dev *i2sdev = soundbus_dev_to_i2sbus_dev(dev);
+       struct codec_info_item *cii;
+
+       if (!dev->pcmname || dev->pcmid == -1) {
+               printk(KERN_ERR "i2sbus: pcm name and id must be set!\n");
+               return -EINVAL;
+       }
+
+       list_for_each_entry(cii, &dev->codec_list, list) {
+               if (cii->codec_data == data)
+                       return -EALREADY;
+       }
+
+       if (!ci->transfers || !ci->transfers->formats
+           || !ci->transfers->rates || !ci->usable)
+               return -EINVAL;
+
+       /* we currently code the i2s transfer on the clock, and support only
+        * 32 and 64 */
+       if (ci->bus_factor != 32 && ci->bus_factor != 64)
+               return -EINVAL;
+
+       /* If you want to fix this, you need to keep track of what transport infos
+        * are to be used, which codecs they belong to, and then fix all the
+        * sysclock/busclock stuff above to depend on which is usable */
+       list_for_each_entry(cii, &dev->codec_list, list) {
+               if (cii->codec->sysclock_factor != ci->sysclock_factor) {
+                       printk(KERN_DEBUG
+                              "cannot yet handle multiple different sysclocks!\n");
+                       return -EINVAL;
+               }
+               if (cii->codec->bus_factor != ci->bus_factor) {
+                       printk(KERN_DEBUG
+                              "cannot yet handle multiple different bus clocks!\n");
+                       return -EINVAL;
+               }
+       }
+
+       tmp = ci->transfers;
+       while (tmp->formats && tmp->rates) {
+               if (tmp->transfer_in)
+                       in = 1;
+               else
+                       out = 1;
+               tmp++;
+       }
+
+       cii = kzalloc(sizeof(struct codec_info_item), GFP_KERNEL);
+       if (!cii) {
+               printk(KERN_DEBUG "i2sbus: failed to allocate cii\n");
+               return -ENOMEM;
+       }
+
+       /* use the private data to point to the codec info */
+       cii->sdev = soundbus_dev_get(dev);
+       cii->codec = ci;
+       cii->codec_data = data;
+
+       if (!cii->sdev) {
+               printk(KERN_DEBUG
+                      "i2sbus: failed to get soundbus dev reference\n");
+               kfree(cii);
+               return -ENODEV;
+       }
+
+       if (!try_module_get(THIS_MODULE)) {
+               printk(KERN_DEBUG "i2sbus: failed to get module reference!\n");
+               soundbus_dev_put(dev);
+               kfree(cii);
+               return -EBUSY;
+       }
+
+       if (!try_module_get(ci->owner)) {
+               printk(KERN_DEBUG
+                      "i2sbus: failed to get module reference to codec owner!\n");
+               module_put(THIS_MODULE);
+               soundbus_dev_put(dev);
+               kfree(cii);
+               return -EBUSY;
+       }
+
+       if (!dev->pcm) {
+               err = snd_pcm_new(card,
+                                 dev->pcmname,
+                                 dev->pcmid,
+                                 0,
+                                 0,
+                                 &dev->pcm);
+               if (err) {
+                       printk(KERN_DEBUG "i2sbus: failed to create pcm\n");
+                       kfree(cii);
+                       module_put(ci->owner);
+                       soundbus_dev_put(dev);
+                       module_put(THIS_MODULE);
+                       return err;
+               }
+       }
+
+       /* ALSA yet again sucks.
+        * If it is ever fixed, remove this line. See below. */
+       out = in = 1;
+
+       if (!i2sdev->out.created && out) {
+               if (dev->pcm->card != card) {
+                       /* eh? */
+                       printk(KERN_ERR
+                              "Can't attach same bus to different cards!\n");
+                       module_put(ci->owner);
+                       kfree(cii);
+                       soundbus_dev_put(dev);
+                       module_put(THIS_MODULE);
+                       return -EINVAL;
+               }
+               if ((err =
+                    snd_pcm_new_stream(dev->pcm, SNDRV_PCM_STREAM_PLAYBACK, 1))) {
+                       module_put(ci->owner);
+                       kfree(cii);
+                       soundbus_dev_put(dev);
+                       module_put(THIS_MODULE);
+                       return err;
+               }
+               snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_PLAYBACK,
+                               &i2sbus_playback_ops);
+               i2sdev->out.created = 1;
+       }
+
+       if (!i2sdev->in.created && in) {
+               if (dev->pcm->card != card) {
+                       printk(KERN_ERR
+                              "Can't attach same bus to different cards!\n");
+                       module_put(ci->owner);
+                       kfree(cii);
+                       soundbus_dev_put(dev);
+                       module_put(THIS_MODULE);
+                       return -EINVAL;
+               }
+               if ((err =
+                    snd_pcm_new_stream(dev->pcm, SNDRV_PCM_STREAM_CAPTURE, 1))) {
+                       module_put(ci->owner);
+                       kfree(cii);
+                       soundbus_dev_put(dev);
+                       module_put(THIS_MODULE);
+                       return err;
+               }
+               snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_CAPTURE,
+                               &i2sbus_record_ops);
+               i2sdev->in.created = 1;
+       }
+
+       /* so we have to register the pcm after adding any substream
+        * to it because alsa doesn't create the devices for the
+        * substreams when we add them later.
+        * Therefore, force in and out on both busses (above) and
+        * register the pcm now instead of just after creating it.
+        */
+       err = snd_device_register(card, dev->pcm);
+       if (err) {
+               printk(KERN_ERR "i2sbus: error registering new pcm\n");
+               module_put(ci->owner);
+               kfree(cii);
+               soundbus_dev_put(dev);
+               module_put(THIS_MODULE);
+               return err;
+       }
+       /* no errors any more, so let's add this to our list */
+       list_add(&cii->list, &dev->codec_list);
+
+       dev->pcm->private_data = i2sdev;
+       dev->pcm->private_free = i2sbus_private_free;
+
+       /* well, we really should support scatter/gather DMA */
+       snd_pcm_lib_preallocate_pages_for_all(
+               dev->pcm, SNDRV_DMA_TYPE_DEV,
+               snd_dma_pci_data(macio_get_pci_dev(i2sdev->macio)),
+               64 * 1024, 64 * 1024);
+
+       return 0;
+}
+
+void i2sbus_detach_codec(struct soundbus_dev *dev, void *data)
+{
+       struct codec_info_item *cii = NULL, *i;
+
+       list_for_each_entry(i, &dev->codec_list, list) {
+               if (i->codec_data == data) {
+                       cii = i;
+                       break;
+               }
+       }
+       if (cii) {
+               list_del(&cii->list);
+               module_put(cii->codec->owner);
+               kfree(cii);
+       }
+       /* no more codecs, but still a pcm? */
+       if (list_empty(&dev->codec_list) && dev->pcm) {
+               /* the actual cleanup is done by the callback above! */
+               snd_device_free(dev->pcm->card, dev->pcm);
+       }
+}
diff --git a/sound/aoa/soundbus/i2sbus/i2sbus.h b/sound/aoa/soundbus/i2sbus/i2sbus.h
new file mode 100644 (file)
index 0000000..cfa5162
--- /dev/null
@@ -0,0 +1,112 @@
+/*
+ * i2sbus driver -- private definitions
+ *
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * GPL v2, can be found in COPYING.
+ */
+#ifndef __I2SBUS_H
+#define __I2SBUS_H
+#include <asm/dbdma.h>
+#include <linux/interrupt.h>
+#include <sound/pcm.h>
+#include <linux/spinlock.h>
+#include <linux/mutex.h>
+#include <asm/prom.h>
+#include "i2sbus-interface.h"
+#include "i2sbus-control.h"
+#include "../soundbus.h"
+
+struct i2sbus_control {
+       volatile struct i2s_control_regs __iomem *controlregs;
+       struct resource rsrc;
+       struct list_head list;
+};
+
+#define MAX_DBDMA_COMMANDS     32
+
+struct dbdma_command_mem {
+       dma_addr_t bus_addr;
+       dma_addr_t bus_cmd_start;
+       struct dbdma_cmd *cmds;
+       void *space;
+       int size;
+       u32 running:1;
+};
+
+struct pcm_info {
+       u32 created:1, /* has this direction been created with alsa? */
+           active:1;  /* is this stream active? */
+       /* runtime information */
+       struct snd_pcm_substream *substream;
+       int current_period;
+       u32 frame_count;
+       struct dbdma_command_mem dbdma_ring;
+       volatile struct dbdma_regs __iomem *dbdma;
+};
+
+struct i2sbus_dev {
+       struct soundbus_dev sound;
+       struct macio_dev *macio;
+       struct i2sbus_control *control;
+       volatile struct i2s_interface_regs __iomem *intfregs;
+
+       struct resource resources[3];
+       struct resource *allocated_resource[3];
+       int interrupts[3];
+       char rnames[3][32];
+
+       /* info about currently active substreams */
+       struct pcm_info out, in;
+       snd_pcm_format_t format;
+       unsigned int rate;
+
+       /* list for a single controller */
+       struct list_head item;
+       /* number of bus on controller */
+       int bus_number;
+       /* for use by control layer */
+       struct pmf_function *enable,
+                           *cell_enable,
+                           *cell_disable,
+                           *clock_enable,
+                           *clock_disable;
+
+       /* locks */
+       /* spinlock for low-level interrupt locking */
+       spinlock_t low_lock;
+       /* mutex for high-level consistency */
+       struct mutex lock;
+};
+
+#define soundbus_dev_to_i2sbus_dev(sdev) \
+               container_of(sdev, struct i2sbus_dev, sound)
+
+/* pcm specific functions */
+extern int
+i2sbus_attach_codec(struct soundbus_dev *dev, struct snd_card *card,
+                   struct codec_info *ci, void *data);
+extern void
+i2sbus_detach_codec(struct soundbus_dev *dev, void *data);
+extern irqreturn_t
+i2sbus_tx_intr(int irq, void *devid, struct pt_regs *regs);
+extern irqreturn_t
+i2sbus_rx_intr(int irq, void *devid, struct pt_regs *regs);
+
+/* control specific functions */
+extern int i2sbus_control_init(struct macio_dev* dev,
+                              struct i2sbus_control **c);
+extern void i2sbus_control_destroy(struct i2sbus_control *c);
+extern int i2sbus_control_add_dev(struct i2sbus_control *c,
+                                 struct i2sbus_dev *i2sdev);
+extern void i2sbus_control_remove_dev(struct i2sbus_control *c,
+                                     struct i2sbus_dev *i2sdev);
+extern int i2sbus_control_enable(struct i2sbus_control *c,
+                                struct i2sbus_dev *i2sdev);
+extern int i2sbus_control_cell(struct i2sbus_control *c,
+                              struct i2sbus_dev *i2sdev,
+                              int enable);
+extern int i2sbus_control_clock(struct i2sbus_control *c,
+                               struct i2sbus_dev *i2sdev,
+                               int enable);
+#endif /* __I2SBUS_H */
diff --git a/sound/aoa/soundbus/soundbus.h b/sound/aoa/soundbus/soundbus.h
new file mode 100644 (file)
index 0000000..5c27297
--- /dev/null
@@ -0,0 +1,202 @@
+/*
+ * soundbus generic definitions
+ *
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * GPL v2, can be found in COPYING.
+ */
+#ifndef __SOUNDBUS_H
+#define __SOUNDBUS_H
+
+#include <asm/of_device.h>
+#include <sound/pcm.h>
+#include <linux/list.h>
+
+
+/* When switching from master to slave or the other way around,
+ * you don't want to have the codec chip acting as clock source
+ * while the bus still is.
+ * More importantly, while switch from slave to master, you need
+ * to turn off the chip's master function first, but then there's
+ * no clock for a while and other chips might reset, so we notify
+ * their drivers after having switched.
+ * The constants here are codec-point of view, so when we switch
+ * the soundbus to master we tell the codec we're going to switch
+ * and give it CLOCK_SWITCH_PREPARE_SLAVE!
+ */
+enum clock_switch {
+       CLOCK_SWITCH_PREPARE_SLAVE,
+       CLOCK_SWITCH_PREPARE_MASTER,
+       CLOCK_SWITCH_SLAVE,
+       CLOCK_SWITCH_MASTER,
+       CLOCK_SWITCH_NOTIFY,
+};
+
+/* information on a transfer the codec can take */
+struct transfer_info {
+       u64 formats;            /* SNDRV_PCM_FMTBIT_* */
+       unsigned int rates;     /* SNDRV_PCM_RATE_* */
+       /* flags */
+       u32 transfer_in:1, /* input = 1, output = 0 */
+           must_be_clock_source:1;
+       /* for codecs to distinguish among their TIs */
+       int tag;
+};
+
+struct codec_info_item {
+       struct codec_info *codec;
+       void *codec_data;
+       struct soundbus_dev *sdev;
+       /* internal, to be used by the soundbus provider */
+       struct list_head list;
+};
+
+/* for prepare, where the codecs need to know
+ * what we're going to drive the bus with */
+struct bus_info {
+       /* see below */
+       int sysclock_factor;
+       int bus_factor;
+};
+
+/* information on the codec itself, plus function pointers */
+struct codec_info {
+       /* the module this lives in */
+       struct module *owner;
+
+       /* supported transfer possibilities, array terminated by
+        * formats or rates being 0. */
+       struct transfer_info *transfers;
+
+       /* Master clock speed factor
+        * to be used (master clock speed = sysclock_factor * sampling freq)
+        * Unused if the soundbus provider has no such notion.
+        */
+       int sysclock_factor;
+
+       /* Bus factor, bus clock speed = bus_factor * sampling freq)
+        * Unused if the soundbus provider has no such notion.
+        */
+       int bus_factor;
+
+       /* operations */
+       /* clock switching, see above */
+       int (*switch_clock)(struct codec_info_item *cii,
+                           enum clock_switch clock);
+
+       /* called for each transfer_info when the user
+        * opens the pcm device to determine what the
+        * hardware can support at this point in time.
+        * That can depend on other user-switchable controls.
+        * Return 1 if usable, 0 if not.
+        * out points to another instance of a transfer_info
+        * which is initialised to the values in *ti, and
+        * it's format and rate values can be modified by
+        * the callback if it is necessary to further restrict
+        * the formats that can be used at the moment, for
+        * example when one codec has multiple logical codec
+        * info structs for multiple inputs.
+        */
+       int (*usable)(struct codec_info_item *cii,
+                     struct transfer_info *ti,
+                     struct transfer_info *out);
+
+       /* called when pcm stream is opened, probably not implemented
+        * most of the time since it isn't too useful */
+       int (*open)(struct codec_info_item *cii,
+                   struct snd_pcm_substream *substream);
+
+       /* called when the pcm stream is closed, at this point
+        * the user choices can all be unlocked (see below) */
+       int (*close)(struct codec_info_item *cii,
+                    struct snd_pcm_substream *substream);
+
+       /* if the codec must forbid some user choices because
+        * they are not valid with the substream/transfer info,
+        * it must do so here. Example: no digital output for
+        * incompatible framerate, say 8KHz, on Onyx.
+        * If the selected stuff in the substream is NOT
+        * compatible, you have to reject this call! */
+       int (*prepare)(struct codec_info_item *cii,
+                      struct bus_info *bi,
+                      struct snd_pcm_substream *substream);
+
+       /* start() is called before data is pushed to the codec.
+        * Note that start() must be atomic! */
+       int (*start)(struct codec_info_item *cii,
+                    struct snd_pcm_substream *substream);
+
+       /* stop() is called after data is no longer pushed to the codec.
+        * Note that stop() must be atomic! */
+       int (*stop)(struct codec_info_item *cii,
+                   struct snd_pcm_substream *substream);
+
+       int (*suspend)(struct codec_info_item *cii, pm_message_t state);
+       int (*resume)(struct codec_info_item *cii);
+};
+
+/* information on a soundbus device */
+struct soundbus_dev {
+       /* the bus it belongs to */
+       struct list_head onbuslist;
+
+       /* the of device it represents */
+       struct of_device ofdev;
+
+       /* what modules go by */
+       char modalias[32];
+
+       /* These fields must be before attach_codec can be called.
+        * They should be set by the owner of the alsa card object
+        * that is needed, and whoever sets them must make sure
+        * that they are unique within that alsa card object. */
+       char *pcmname;
+       int pcmid;
+
+       /* this is assigned by the soundbus provider in attach_codec */
+       struct snd_pcm *pcm;
+
+       /* operations */
+       /* attach a codec to this soundbus, give the alsa
+        * card object the PCMs for this soundbus should be in.
+        * The 'data' pointer must be unique, it is used as the
+        * key for detach_codec(). */
+       int (*attach_codec)(struct soundbus_dev *dev, struct snd_card *card,
+                           struct codec_info *ci, void *data);
+       void (*detach_codec)(struct soundbus_dev *dev, void *data);
+       /* TODO: suspend/resume */
+
+       /* private for the soundbus provider */
+       struct list_head codec_list;
+       u32 have_out:1, have_in:1;
+};
+#define to_soundbus_device(d) container_of(d, struct soundbus_dev, ofdev.dev)
+#define of_to_soundbus_device(d) container_of(d, struct soundbus_dev, ofdev)
+
+extern int soundbus_add_one(struct soundbus_dev *dev);
+extern void soundbus_remove_one(struct soundbus_dev *dev);
+
+extern struct soundbus_dev *soundbus_dev_get(struct soundbus_dev *dev);
+extern void soundbus_dev_put(struct soundbus_dev *dev);
+
+struct soundbus_driver {
+       char *name;
+       struct module *owner;
+
+       /* we don't implement any matching at all */
+
+       int     (*probe)(struct soundbus_dev* dev);
+       int     (*remove)(struct soundbus_dev* dev);
+
+       int     (*suspend)(struct soundbus_dev* dev, pm_message_t state);
+       int     (*resume)(struct soundbus_dev* dev);
+       int     (*shutdown)(struct soundbus_dev* dev);
+
+       struct device_driver driver;
+};
+#define to_soundbus_driver(drv) container_of(drv,struct soundbus_driver, driver)
+
+extern int soundbus_register_driver(struct soundbus_driver *drv);
+extern void soundbus_unregister_driver(struct soundbus_driver *drv);
+
+#endif /* __SOUNDBUS_H */
diff --git a/sound/aoa/soundbus/sysfs.c b/sound/aoa/soundbus/sysfs.c
new file mode 100644 (file)
index 0000000..d31f814
--- /dev/null
@@ -0,0 +1,43 @@
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/stat.h>
+/* FIX UP */
+#include "soundbus.h"
+
+#define soundbus_config_of_attr(field, format_string)                  \
+static ssize_t                                                         \
+field##_show (struct device *dev, struct device_attribute *attr,       \
+              char *buf)                                               \
+{                                                                      \
+       struct soundbus_dev *mdev = to_soundbus_device (dev);           \
+       return sprintf (buf, format_string, mdev->ofdev.node->field);   \
+}
+
+static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
+                            char *buf)
+{
+       struct soundbus_dev *sdev = to_soundbus_device(dev);
+       struct of_device *of = &sdev->ofdev;
+       int length;
+
+       if (*sdev->modalias) {
+               strlcpy(buf, sdev->modalias, sizeof(sdev->modalias) + 1);
+               strcat(buf, "\n");
+               length = strlen(buf);
+       } else {
+               length = sprintf(buf, "of:N%sT%s\n",
+                                of->node->name, of->node->type);
+       }
+
+       return length;
+}
+
+soundbus_config_of_attr (name, "%s\n");
+soundbus_config_of_attr (type, "%s\n");
+
+struct device_attribute soundbus_dev_attrs[] = {
+       __ATTR_RO(name),
+       __ATTR_RO(type),
+       __ATTR_RO(modalias),
+       __ATTR_NULL
+};