[ALSA] ad1889: add AD1889 driver
Clemens Ladisch [Thu, 1 Sep 2005 06:14:40 +0000 (08:14 +0200)]
PCI drivers,AD1889 driver
move the AD1889 driver to the kernel tree

Acked-by: Thibaut Varene <varenet@parisc-linux.org>
Acked-by: Kyle McMartin <kyle@parisc-linux.org>

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>

sound/pci/Kconfig
sound/pci/Makefile
sound/pci/ad1889.c [new file with mode: 0644]
sound/pci/ad1889.h [new file with mode: 0644]

index 1e45891..a5d593c 100644 (file)
@@ -316,6 +316,18 @@ config SND_YMFPCI
          To compile this driver as a module, choose M here: the module
          will be called snd-ymfpci.
 
+config SND_AD1889
+       tristate "Analog Devices AD1889"
+       depends on SND
+       select SND_AC97_CODEC
+       help
+         Say Y here to include support for the integrated AC97 sound
+         device found in particular on the Hewlett-Packard [BCJ]-xxx0
+         class PA-RISC workstations, using the AD1819 codec.
+
+         To compile this as a module, choose M here: the module
+         will be called snd-ad1889.
+
 config SND_ALS4000
        tristate "Avance Logic ALS4000"
        depends on SND && ISA_DMA_API
index b40575c..42fabfc 100644 (file)
@@ -3,6 +3,7 @@
 # Copyright (c) 2001 by Jaroslav Kysela <perex@suse.cz>
 #
 
+snd-ad1889-objs := ad1889.o
 snd-als4000-objs := als4000.o
 snd-atiixp-objs := atiixp.o
 snd-atiixp-modem-objs := atiixp_modem.o
@@ -25,6 +26,7 @@ snd-via82xx-objs := via82xx.o
 snd-via82xx-modem-objs := via82xx_modem.o
 
 # Toplevel Module Dependency
+obj-$(CONFIG_SND_AD1889) += snd-ad1889.o
 obj-$(CONFIG_SND_ALS4000) += snd-als4000.o
 obj-$(CONFIG_SND_ATIIXP) += snd-atiixp.o
 obj-$(CONFIG_SND_ATIIXP_MODEM) += snd-atiixp-modem.o
diff --git a/sound/pci/ad1889.c b/sound/pci/ad1889.c
new file mode 100644 (file)
index 0000000..37e8df2
--- /dev/null
@@ -0,0 +1,1089 @@
+/* Analog Devices 1889 audio driver
+ *
+ * This is a driver for the AD1889 PCI audio chipset found
+ * on the HP PA-RISC [BCJ]-xxx0 workstations.
+ *
+ * Copyright (C) 2004-2005, Kyle McMartin <kyle@parisc-linux.org>
+ * Copyright (C) 2005, Thibaut Varene <varenet@parisc-linux.org>
+ *   Based on the OSS AD1889 driver by Randolph Chung <tausq@debian.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.         See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * TODO:
+ *     Do we need to take care of CCS register?
+ *     Maybe we could use finer grained locking (separate locks for pb/cap)?
+ * Wishlist:
+ *     Control Interface (mixer) support
+ *     Better AC97 support (VSR...)?
+ *     PM support
+ *     MIDI support
+ *     Game Port support
+ *     SG DMA support (this will need *alot* of work)
+ */
+
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/compiler.h>
+#include <linux/delay.h>
+
+#include <sound/driver.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/initval.h>
+#include <sound/ac97_codec.h>
+
+#include <asm/io.h>
+
+#include "ad1889.h"
+#include "ac97/ac97_id.h"
+
+#define        AD1889_DRVVER   "$Revision: 1.1 $"
+
+MODULE_AUTHOR("Kyle McMartin <kyle@parisc-linux.org>, Thibaut Varene <t-bone@parisc-linux.org>");
+MODULE_DESCRIPTION("Analog Devices AD1889 ALSA sound driver");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("{{Analog Devices,AD1889}}");
+
+static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
+module_param_array(index, int, NULL, 0444);
+MODULE_PARM_DESC(index, "Index value for the AD1889 soundcard.");
+
+static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
+module_param_array(id, charp, NULL, 0444);
+MODULE_PARM_DESC(id, "ID string for the AD1889 soundcard.");
+
+static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
+module_param_array(enable, bool, NULL, 0444);
+MODULE_PARM_DESC(enable, "Enable AD1889 soundcard.");
+
+static char *ac97_quirk[SNDRV_CARDS];
+module_param_array(ac97_quirk, charp, NULL, 0444);
+MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
+
+#define DEVNAME "ad1889"
+#define PFX    DEVNAME ": "
+
+/* let's use the global sound debug interfaces */
+#define ad1889_debug(fmt, arg...) snd_printd(KERN_DEBUG fmt, ## arg)
+
+/* keep track of some hw registers */
+struct ad1889_register_state {
+       u16 reg;        /* reg setup */
+       u32 addr;       /* dma base address */
+       unsigned long size;     /* DMA buffer size */
+};
+
+struct snd_ad1889 {
+       snd_card_t *card;
+       struct pci_dev *pci;
+
+       int irq;
+       unsigned long bar;
+       void __iomem *iobase;
+
+       ac97_t *ac97;
+       ac97_bus_t *ac97_bus;
+       snd_pcm_t *pcm;
+       snd_info_entry_t *proc;
+
+       snd_pcm_substream_t *psubs;
+       snd_pcm_substream_t *csubs;
+
+       /* playback register state */
+       struct ad1889_register_state wave;
+       struct ad1889_register_state ramc;
+
+       spinlock_t lock;
+};
+
+static inline u16
+ad1889_readw(struct snd_ad1889 *chip, unsigned reg)
+{
+       return readw(chip->iobase + reg);
+}
+
+static inline void
+ad1889_writew(struct snd_ad1889 *chip, unsigned reg, u16 val)
+{
+       writew(val, chip->iobase + reg);
+}
+
+static inline u32
+ad1889_readl(struct snd_ad1889 *chip, unsigned reg)
+{
+       return readl(chip->iobase + reg);
+}
+
+static inline void
+ad1889_writel(struct snd_ad1889 *chip, unsigned reg, u32 val)
+{
+       writel(val, chip->iobase + reg);
+}
+
+static inline void
+ad1889_unmute(struct snd_ad1889 *chip)
+{
+       u16 st;
+       st = ad1889_readw(chip, AD_DS_WADA) & 
+               ~(AD_DS_WADA_RWAM | AD_DS_WADA_LWAM);
+       ad1889_writew(chip, AD_DS_WADA, st);
+       ad1889_readw(chip, AD_DS_WADA);
+}
+
+static inline void
+ad1889_mute(struct snd_ad1889 *chip)
+{
+       u16 st;
+       st = ad1889_readw(chip, AD_DS_WADA) | AD_DS_WADA_RWAM | AD_DS_WADA_LWAM;
+       ad1889_writew(chip, AD_DS_WADA, st);
+       ad1889_readw(chip, AD_DS_WADA);
+}
+
+static inline void
+ad1889_load_adc_buffer_address(struct snd_ad1889 *chip, u32 address)
+{
+       ad1889_writel(chip, AD_DMA_ADCBA, address);
+       ad1889_writel(chip, AD_DMA_ADCCA, address);
+}
+
+static inline void
+ad1889_load_adc_buffer_count(struct snd_ad1889 *chip, u32 count)
+{
+       ad1889_writel(chip, AD_DMA_ADCBC, count);
+       ad1889_writel(chip, AD_DMA_ADCCC, count);
+}
+
+static inline void
+ad1889_load_adc_interrupt_count(struct snd_ad1889 *chip, u32 count)
+{
+       ad1889_writel(chip, AD_DMA_ADCIB, count);
+       ad1889_writel(chip, AD_DMA_ADCIC, count);
+}
+
+static inline void
+ad1889_load_wave_buffer_address(struct snd_ad1889 *chip, u32 address)
+{
+       ad1889_writel(chip, AD_DMA_WAVBA, address);
+       ad1889_writel(chip, AD_DMA_WAVCA, address);
+}
+
+static inline void
+ad1889_load_wave_buffer_count(struct snd_ad1889 *chip, u32 count)
+{
+       ad1889_writel(chip, AD_DMA_WAVBC, count);
+       ad1889_writel(chip, AD_DMA_WAVCC, count);
+}
+
+static inline void
+ad1889_load_wave_interrupt_count(struct snd_ad1889 *chip, u32 count)
+{
+       ad1889_writel(chip, AD_DMA_WAVIB, count);
+       ad1889_writel(chip, AD_DMA_WAVIC, count);
+}
+
+static void
+ad1889_channel_reset(struct snd_ad1889 *chip, unsigned int channel)
+{
+       u16 reg;
+       
+       if (channel & AD_CHAN_WAV) {
+               /* Disable wave channel */
+               reg = ad1889_readw(chip, AD_DS_WSMC) & ~AD_DS_WSMC_WAEN;
+               ad1889_writew(chip, AD_DS_WSMC, reg);
+               chip->wave.reg = reg;
+               
+               /* disable IRQs */
+               reg = ad1889_readw(chip, AD_DMA_WAV);
+               reg &= AD_DMA_IM_DIS;
+               reg &= ~AD_DMA_LOOP;
+               ad1889_writew(chip, AD_DMA_WAV, reg);
+
+               /* clear IRQ and address counters and pointers */
+               ad1889_load_wave_buffer_address(chip, 0x0);
+               ad1889_load_wave_buffer_count(chip, 0x0);
+               ad1889_load_wave_interrupt_count(chip, 0x0);
+
+               /* flush */
+               ad1889_readw(chip, AD_DMA_WAV);
+       }
+       
+       if (channel & AD_CHAN_ADC) {
+               /* Disable ADC channel */
+               reg = ad1889_readw(chip, AD_DS_RAMC) & ~AD_DS_RAMC_ADEN;
+               ad1889_writew(chip, AD_DS_RAMC, reg);
+               chip->ramc.reg = reg;
+
+               reg = ad1889_readw(chip, AD_DMA_ADC);
+               reg &= AD_DMA_IM_DIS;
+               reg &= ~AD_DMA_LOOP;
+               ad1889_writew(chip, AD_DMA_ADC, reg);
+       
+               ad1889_load_adc_buffer_address(chip, 0x0);
+               ad1889_load_adc_buffer_count(chip, 0x0);
+               ad1889_load_adc_interrupt_count(chip, 0x0);
+
+               /* flush */
+               ad1889_readw(chip, AD_DMA_ADC);
+       }
+}
+
+static inline u16
+snd_ad1889_ac97_read(ac97_t *ac97, unsigned short reg)
+{
+       struct snd_ad1889 *chip = ac97->private_data;
+       return ad1889_readw(chip, AD_AC97_BASE + reg);
+}
+
+static inline void
+snd_ad1889_ac97_write(ac97_t *ac97, unsigned short reg, unsigned short val)
+{
+       struct snd_ad1889 *chip = ac97->private_data;
+       ad1889_writew(chip, AD_AC97_BASE + reg, val);
+}
+
+static int
+snd_ad1889_ac97_ready(struct snd_ad1889 *chip)
+{
+       int retry = 400; /* average needs 352 msec */
+       
+       while (!(ad1889_readw(chip, AD_AC97_ACIC) & AD_AC97_ACIC_ACRDY) 
+                       && --retry)
+               mdelay(1);
+       if (!retry) {
+               snd_printk(KERN_ERR PFX "[%s] Link is not ready.\n",
+                      __FUNCTION__);
+               return -EIO;
+       }
+       ad1889_debug("[%s] ready after %d ms\n", __FUNCTION__, 400 - retry);
+
+       return 0;
+}
+
+static int 
+snd_ad1889_hw_params(snd_pcm_substream_t *substream,
+                       snd_pcm_hw_params_t *hw_params)
+{
+       return snd_pcm_lib_malloc_pages(substream, 
+                                       params_buffer_bytes(hw_params));
+}
+
+static int
+snd_ad1889_hw_free(snd_pcm_substream_t *substream)
+{
+       return snd_pcm_lib_free_pages(substream);
+}
+
+static snd_pcm_hardware_t snd_ad1889_playback_hw = {
+       .info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+               SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_BLOCK_TRANSFER,
+       .formats = SNDRV_PCM_FMTBIT_S16_LE,
+       .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
+       .rate_min = 8000,       /* docs say 7000, but we're lazy */
+       .rate_max = 48000,
+       .channels_min = 1,
+       .channels_max = 2,
+       .buffer_bytes_max = BUFFER_BYTES_MAX,
+       .period_bytes_min = PERIOD_BYTES_MIN,
+       .period_bytes_max = PERIOD_BYTES_MAX,
+       .periods_min = PERIODS_MIN,
+       .periods_max = PERIODS_MAX,
+       /*.fifo_size = 0,*/
+};
+
+static snd_pcm_hardware_t snd_ad1889_capture_hw = {
+       .info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+               SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_BLOCK_TRANSFER,
+       .formats = SNDRV_PCM_FMTBIT_S16_LE,
+       .rates = SNDRV_PCM_RATE_48000,
+       .rate_min = 48000,      /* docs say we could to VSR, but we're lazy */
+       .rate_max = 48000,
+       .channels_min = 1,
+       .channels_max = 2,
+       .buffer_bytes_max = BUFFER_BYTES_MAX,
+       .period_bytes_min = PERIOD_BYTES_MIN,
+       .period_bytes_max = PERIOD_BYTES_MAX,
+       .periods_min = PERIODS_MIN,
+       .periods_max = PERIODS_MAX,
+       /*.fifo_size = 0,*/
+};
+
+static int
+snd_ad1889_playback_open(snd_pcm_substream_t *ss)
+{
+       struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+       snd_pcm_runtime_t *rt = ss->runtime;
+
+       chip->psubs = ss;
+       rt->hw = snd_ad1889_playback_hw;
+
+       return 0;
+}
+
+static int
+snd_ad1889_capture_open(snd_pcm_substream_t *ss)
+{
+       struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+       snd_pcm_runtime_t *rt = ss->runtime;
+
+       chip->csubs = ss;
+       rt->hw = snd_ad1889_capture_hw;
+
+       return 0;
+}
+
+static int
+snd_ad1889_playback_close(snd_pcm_substream_t *ss)
+{
+       struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+       chip->psubs = NULL;
+       return 0;
+}
+
+static int
+snd_ad1889_capture_close(snd_pcm_substream_t *ss)
+{
+       struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+       chip->csubs = NULL;
+       return 0;
+}
+
+static int
+snd_ad1889_playback_prepare(snd_pcm_substream_t *ss)
+{
+       struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+       snd_pcm_runtime_t *rt = ss->runtime;
+       unsigned int size = snd_pcm_lib_buffer_bytes(ss);
+       unsigned int count = snd_pcm_lib_period_bytes(ss);
+       u16 reg;
+
+       ad1889_channel_reset(chip, AD_CHAN_WAV);
+
+       reg = ad1889_readw(chip, AD_DS_WSMC);
+       
+       /* Mask out 16-bit / Stereo */
+       reg &= ~(AD_DS_WSMC_WA16 | AD_DS_WSMC_WAST);
+
+       if (snd_pcm_format_width(rt->format) == 16)
+               reg |= AD_DS_WSMC_WA16;
+
+       if (rt->channels > 1)
+               reg |= AD_DS_WSMC_WAST;
+
+       /* let's make sure we don't clobber ourselves */
+       spin_lock_irq(&chip->lock);
+       
+       chip->wave.size = size;
+       chip->wave.reg = reg;
+       chip->wave.addr = rt->dma_addr;
+
+       ad1889_writew(chip, AD_DS_WSMC, chip->wave.reg);
+       
+       /* Set sample rates on the codec */
+       ad1889_writew(chip, AD_DS_WAS, rt->rate);
+
+       /* Set up DMA */
+       ad1889_load_wave_buffer_address(chip, chip->wave.addr);
+       ad1889_load_wave_buffer_count(chip, size);
+       ad1889_load_wave_interrupt_count(chip, count);
+
+       /* writes flush */
+       ad1889_readw(chip, AD_DS_WSMC);
+       
+       spin_unlock_irq(&chip->lock);
+       
+       ad1889_debug("prepare playback: addr = 0x%x, count = %u, "
+                       "size = %u, reg = 0x%x, rate = %u\n", chip->wave.addr,
+                       count, size, reg, rt->rate);
+       return 0;
+}
+
+static int
+snd_ad1889_capture_prepare(snd_pcm_substream_t *ss)
+{
+       struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+       snd_pcm_runtime_t *rt = ss->runtime;
+       unsigned int size = snd_pcm_lib_buffer_bytes(ss);
+       unsigned int count = snd_pcm_lib_period_bytes(ss);
+       u16 reg;
+
+       ad1889_channel_reset(chip, AD_CHAN_ADC);
+       
+       reg = ad1889_readw(chip, AD_DS_RAMC);
+
+       /* Mask out 16-bit / Stereo */
+       reg &= ~(AD_DS_RAMC_AD16 | AD_DS_RAMC_ADST);
+
+       if (snd_pcm_format_width(rt->format) == 16)
+               reg |= AD_DS_RAMC_AD16;
+
+       if (rt->channels > 1)
+               reg |= AD_DS_RAMC_ADST;
+
+       /* let's make sure we don't clobber ourselves */
+       spin_lock_irq(&chip->lock);
+       
+       chip->ramc.size = size;
+       chip->ramc.reg = reg;
+       chip->ramc.addr = rt->dma_addr;
+
+       ad1889_writew(chip, AD_DS_RAMC, chip->ramc.reg);
+
+       /* Set up DMA */
+       ad1889_load_adc_buffer_address(chip, chip->ramc.addr);
+       ad1889_load_adc_buffer_count(chip, size);
+       ad1889_load_adc_interrupt_count(chip, count);
+
+       /* writes flush */
+       ad1889_readw(chip, AD_DS_RAMC);
+       
+       spin_unlock_irq(&chip->lock);
+       
+       ad1889_debug("prepare capture: addr = 0x%x, count = %u, "
+                       "size = %u, reg = 0x%x, rate = %u\n", chip->ramc.addr,
+                       count, size, reg, rt->rate);
+       return 0;
+}
+
+/* this is called in atomic context with IRQ disabled.
+   Must be as fast as possible and not sleep.
+   DMA should be *triggered* by this call.
+   The WSMC "WAEN" bit triggers DMA Wave On/Off */
+static int
+snd_ad1889_playback_trigger(snd_pcm_substream_t *ss, int cmd)
+{
+       u16 wsmc;
+       struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+       
+       wsmc = ad1889_readw(chip, AD_DS_WSMC);
+
+       switch (cmd) {
+       case SNDRV_PCM_TRIGGER_START:
+               /* enable DMA loop & interrupts */
+               ad1889_writew(chip, AD_DMA_WAV, AD_DMA_LOOP | AD_DMA_IM_CNT);
+               wsmc |= AD_DS_WSMC_WAEN;
+               /* 1 to clear CHSS bit */
+               ad1889_writel(chip, AD_DMA_CHSS, AD_DMA_CHSS_WAVS);
+               ad1889_unmute(chip);
+               break;
+       case SNDRV_PCM_TRIGGER_STOP:
+               ad1889_mute(chip);
+               wsmc &= ~AD_DS_WSMC_WAEN;
+               break;
+       default:
+               snd_BUG();
+               return -EINVAL;
+       }
+       
+       chip->wave.reg = wsmc;
+       ad1889_writew(chip, AD_DS_WSMC, wsmc);  
+       ad1889_readw(chip, AD_DS_WSMC); /* flush */
+
+       /* reset the chip when STOP - will disable IRQs */
+       if (cmd == SNDRV_PCM_TRIGGER_STOP)
+               ad1889_channel_reset(chip, AD_CHAN_WAV);
+
+       return 0;
+}
+
+/* this is called in atomic context with IRQ disabled.
+   Must be as fast as possible and not sleep.
+   DMA should be *triggered* by this call.
+   The RAMC "ADEN" bit triggers DMA ADC On/Off */
+static int
+snd_ad1889_capture_trigger(snd_pcm_substream_t *ss, int cmd)
+{
+       u16 ramc;
+       struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+
+       ramc = ad1889_readw(chip, AD_DS_RAMC);
+       
+       switch (cmd) {
+       case SNDRV_PCM_TRIGGER_START:
+               /* enable DMA loop & interrupts */
+               ad1889_writew(chip, AD_DMA_ADC, AD_DMA_LOOP | AD_DMA_IM_CNT);
+               ramc |= AD_DS_RAMC_ADEN;
+               /* 1 to clear CHSS bit */
+               ad1889_writel(chip, AD_DMA_CHSS, AD_DMA_CHSS_ADCS);
+               break;
+       case SNDRV_PCM_TRIGGER_STOP:
+               ramc &= ~AD_DS_RAMC_ADEN;
+               break;
+       default:
+               return -EINVAL;
+       }
+       
+       chip->ramc.reg = ramc;
+       ad1889_writew(chip, AD_DS_RAMC, ramc);  
+       ad1889_readw(chip, AD_DS_RAMC); /* flush */
+       
+       /* reset the chip when STOP - will disable IRQs */
+       if (cmd == SNDRV_PCM_TRIGGER_STOP)
+               ad1889_channel_reset(chip, AD_CHAN_ADC);
+               
+       return 0;
+}
+
+/* Called in atomic context with IRQ disabled */
+static snd_pcm_uframes_t
+snd_ad1889_playback_pointer(snd_pcm_substream_t *ss)
+{
+       size_t ptr = 0;
+       struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+
+       if (unlikely(!(chip->wave.reg & AD_DS_WSMC_WAEN)))
+               return 0;
+
+       ptr = ad1889_readl(chip, AD_DMA_WAVCA);
+       ptr -= chip->wave.addr;
+       
+       snd_assert((ptr >= 0) && (ptr < chip->wave.size), return 0);
+       
+       return bytes_to_frames(ss->runtime, ptr);
+}
+
+/* Called in atomic context with IRQ disabled */
+static snd_pcm_uframes_t
+snd_ad1889_capture_pointer(snd_pcm_substream_t *ss)
+{
+       size_t ptr = 0;
+       struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+
+       if (unlikely(!(chip->ramc.reg & AD_DS_RAMC_ADEN)))
+               return 0;
+
+       ptr = ad1889_readl(chip, AD_DMA_ADCCA);
+       ptr -= chip->ramc.addr;
+
+       snd_assert((ptr >= 0) && (ptr < chip->ramc.size), return 0);
+       
+       return bytes_to_frames(ss->runtime, ptr);
+}
+
+static snd_pcm_ops_t snd_ad1889_playback_ops = {
+       .open = snd_ad1889_playback_open,
+       .close = snd_ad1889_playback_close,
+       .ioctl = snd_pcm_lib_ioctl,
+       .hw_params = snd_ad1889_hw_params,
+       .hw_free = snd_ad1889_hw_free,
+       .prepare = snd_ad1889_playback_prepare,
+       .trigger = snd_ad1889_playback_trigger,
+       .pointer = snd_ad1889_playback_pointer, 
+};
+
+static snd_pcm_ops_t snd_ad1889_capture_ops = {
+       .open = snd_ad1889_capture_open,
+       .close = snd_ad1889_capture_close,
+       .ioctl = snd_pcm_lib_ioctl,
+       .hw_params = snd_ad1889_hw_params,
+       .hw_free = snd_ad1889_hw_free,
+       .prepare = snd_ad1889_capture_prepare,
+       .trigger = snd_ad1889_capture_trigger,
+       .pointer = snd_ad1889_capture_pointer, 
+};
+
+static irqreturn_t
+snd_ad1889_interrupt(int irq, 
+                    void *dev_id, 
+                    struct pt_regs *regs)
+{
+       unsigned long st;
+       struct snd_ad1889 *chip = dev_id;
+
+       st = ad1889_readl(chip, AD_DMA_DISR);
+
+       /* clear ISR */
+       ad1889_writel(chip, AD_DMA_DISR, st);
+
+       st &= AD_INTR_MASK;
+
+       if (unlikely(!st))
+               return IRQ_NONE;
+
+       if (st & (AD_DMA_DISR_PMAI|AD_DMA_DISR_PTAI))
+               ad1889_debug("Unexpected master or target abort interrupt!\n");
+
+       if ((st & AD_DMA_DISR_WAVI) && chip->psubs)
+               snd_pcm_period_elapsed(chip->psubs);
+       if ((st & AD_DMA_DISR_ADCI) && chip->csubs)
+               snd_pcm_period_elapsed(chip->csubs);
+
+       return IRQ_HANDLED;
+}
+
+static void 
+snd_ad1889_pcm_free(snd_pcm_t *pcm)
+{
+       struct snd_ad1889 *chip = pcm->private_data;
+       chip->pcm = NULL;
+       snd_pcm_lib_preallocate_free_for_all(pcm);
+}
+
+static int __devinit
+snd_ad1889_pcm_init(struct snd_ad1889 *chip, int device, snd_pcm_t **rpcm)
+{
+       int err;
+       snd_pcm_t *pcm;
+
+       if (rpcm)
+               *rpcm = NULL;
+
+       err = snd_pcm_new(chip->card, chip->card->driver, device, 1, 1, &pcm);
+       if (err < 0)
+               return err;
+
+       snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, 
+                       &snd_ad1889_playback_ops);
+       snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
+                       &snd_ad1889_capture_ops);
+
+       pcm->private_data = chip;
+       pcm->private_free = snd_ad1889_pcm_free;
+       pcm->info_flags = 0;
+       strcpy(pcm->name, chip->card->shortname);
+       
+       chip->pcm = pcm;
+       chip->psubs = NULL;
+       chip->csubs = NULL;
+
+       err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
+                                               snd_dma_pci_data(chip->pci),
+                                               BUFFER_BYTES_MAX / 2,
+                                               BUFFER_BYTES_MAX);
+
+       if (err < 0) {
+               snd_printk(KERN_ERR PFX "buffer allocation error: %d\n", err);
+               return err;
+       }
+       
+       if (rpcm)
+               *rpcm = pcm;
+       
+       return 0;
+}
+
+static void
+snd_ad1889_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
+{
+       struct snd_ad1889 *chip = entry->private_data;
+       u16 reg;
+       int tmp;
+
+       reg = ad1889_readw(chip, AD_DS_WSMC);
+       snd_iprintf(buffer, "Wave output: %s\n",
+                       (reg & AD_DS_WSMC_WAEN) ? "enabled" : "disabled");
+       snd_iprintf(buffer, "Wave Channels: %s\n",
+                       (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono");
+       snd_iprintf(buffer, "Wave Quality: %d-bit linear\n",
+                       (reg & AD_DS_WSMC_WA16) ? 16 : 8);
+       
+       /* WARQ is at offset 12 */
+       tmp = (reg & AD_DS_WSMC_WARQ) ?
+                       (((reg & AD_DS_WSMC_WARQ >> 12) & 0x01) ? 12 : 18) : 4;
+       tmp /= (reg & AD_DS_WSMC_WAST) ? 2 : 1;
+       
+       snd_iprintf(buffer, "Wave FIFO: %d %s words\n\n", tmp,
+                       (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono");
+                               
+       
+       snd_iprintf(buffer, "Synthesis output: %s\n",
+                       reg & AD_DS_WSMC_SYEN ? "enabled" : "disabled");
+       
+       /* SYRQ is at offset 4 */
+       tmp = (reg & AD_DS_WSMC_SYRQ) ?
+                       (((reg & AD_DS_WSMC_SYRQ >> 4) & 0x01) ? 12 : 18) : 4;
+       tmp /= (reg & AD_DS_WSMC_WAST) ? 2 : 1;
+       
+       snd_iprintf(buffer, "Synthesis FIFO: %d %s words\n\n", tmp,
+                       (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono");
+
+       reg = ad1889_readw(chip, AD_DS_RAMC);
+       snd_iprintf(buffer, "ADC input: %s\n",
+                       (reg & AD_DS_RAMC_ADEN) ? "enabled" : "disabled");
+       snd_iprintf(buffer, "ADC Channels: %s\n",
+                       (reg & AD_DS_RAMC_ADST) ? "stereo" : "mono");
+       snd_iprintf(buffer, "ADC Quality: %d-bit linear\n",
+                       (reg & AD_DS_RAMC_AD16) ? 16 : 8);
+       
+       /* ACRQ is at offset 4 */
+       tmp = (reg & AD_DS_RAMC_ACRQ) ?
+                       (((reg & AD_DS_RAMC_ACRQ >> 4) & 0x01) ? 12 : 18) : 4;
+       tmp /= (reg & AD_DS_RAMC_ADST) ? 2 : 1;
+       
+       snd_iprintf(buffer, "ADC FIFO: %d %s words\n\n", tmp,
+                       (reg & AD_DS_RAMC_ADST) ? "stereo" : "mono");
+       
+       snd_iprintf(buffer, "Resampler input: %s\n",
+                       reg & AD_DS_RAMC_REEN ? "enabled" : "disabled");
+                       
+       /* RERQ is at offset 12 */
+       tmp = (reg & AD_DS_RAMC_RERQ) ?
+                       (((reg & AD_DS_RAMC_RERQ >> 12) & 0x01) ? 12 : 18) : 4;
+       tmp /= (reg & AD_DS_RAMC_ADST) ? 2 : 1;
+       
+       snd_iprintf(buffer, "Resampler FIFO: %d %s words\n\n", tmp,
+                       (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono");
+                               
+       
+       /* doc says LSB represents -1.5dB, but the max value (-94.5dB)
+       suggests that LSB is -3dB, which is more coherent with the logarithmic
+       nature of the dB scale */
+       reg = ad1889_readw(chip, AD_DS_WADA);
+       snd_iprintf(buffer, "Left: %s, -%d dB\n",
+                       (reg & AD_DS_WADA_LWAM) ? "mute" : "unmute",
+                       ((reg & AD_DS_WADA_LWAA) >> 8) * 3);
+       reg = ad1889_readw(chip, AD_DS_WADA);
+       snd_iprintf(buffer, "Right: %s, -%d dB\n",
+                       (reg & AD_DS_WADA_RWAM) ? "mute" : "unmute",
+                       ((reg & AD_DS_WADA_RWAA) >> 8) * 3);
+       
+       reg = ad1889_readw(chip, AD_DS_WAS);
+       snd_iprintf(buffer, "Wave samplerate: %u Hz\n", reg);
+       reg = ad1889_readw(chip, AD_DS_RES);
+       snd_iprintf(buffer, "Resampler samplerate: %u Hz\n", reg);
+}
+
+static void __devinit
+snd_ad1889_proc_init(struct snd_ad1889 *chip)
+{
+       snd_info_entry_t *entry;
+
+       if (!snd_card_proc_new(chip->card, chip->card->driver, &entry))
+               snd_info_set_text_ops(entry, chip, 1024, snd_ad1889_proc_read);
+}
+
+static struct ac97_quirk ac97_quirks[] = {
+       {
+               .subvendor = 0x11d4,    /* AD */
+               .subdevice = 0x1889,    /* AD1889 */
+               .codec_id = AC97_ID_AD1819,
+               .name = "AD1889",
+               .type = AC97_TUNE_HP_ONLY
+       },
+       { } /* terminator */
+};
+
+static void __devinit
+snd_ad1889_ac97_xinit(struct snd_ad1889 *chip)
+{
+       u16 reg;
+
+       reg = ad1889_readw(chip, AD_AC97_ACIC);
+       reg |= AD_AC97_ACIC_ACRD;               /* Reset Disable */
+       ad1889_writew(chip, AD_AC97_ACIC, reg);
+       ad1889_readw(chip, AD_AC97_ACIC);       /* flush posted write */
+       udelay(10);
+       /* Interface Enable */
+       reg |= AD_AC97_ACIC_ACIE;
+       ad1889_writew(chip, AD_AC97_ACIC, reg);
+       
+       snd_ad1889_ac97_ready(chip);
+
+       /* Audio Stream Output | Variable Sample Rate Mode */
+       reg = ad1889_readw(chip, AD_AC97_ACIC);
+       reg |= AD_AC97_ACIC_ASOE | AD_AC97_ACIC_VSRM;
+       ad1889_writew(chip, AD_AC97_ACIC, reg);
+       ad1889_readw(chip, AD_AC97_ACIC); /* flush posted write */
+
+}
+
+static void
+snd_ad1889_ac97_bus_free(ac97_bus_t *bus)
+{
+       struct snd_ad1889 *chip = bus->private_data;
+       chip->ac97_bus = NULL;
+}
+
+static void
+snd_ad1889_ac97_free(ac97_t *ac97)
+{
+       struct snd_ad1889 *chip = ac97->private_data;
+       chip->ac97 = NULL;
+}
+
+static int __devinit
+snd_ad1889_ac97_init(struct snd_ad1889 *chip, const char *quirk_override)
+{
+       int err;
+       ac97_template_t ac97;
+       static ac97_bus_ops_t ops = {
+               .write = snd_ad1889_ac97_write,
+               .read = snd_ad1889_ac97_read,
+       };
+
+       /* doing that here, it works. */
+       snd_ad1889_ac97_xinit(chip);
+
+       err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus);
+       if (err < 0)
+               return err;
+       
+       chip->ac97_bus->private_free = snd_ad1889_ac97_bus_free;
+
+       memset(&ac97, 0, sizeof(ac97));
+       ac97.private_data = chip;
+       ac97.private_free = snd_ad1889_ac97_free;
+       ac97.pci = chip->pci;
+
+       err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97);
+       if (err < 0)
+               return err;
+               
+       snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
+       
+       return 0;
+}
+
+static int
+snd_ad1889_free(struct snd_ad1889 *chip)
+{
+       if (chip->irq < 0)
+               goto skip_hw;
+
+       spin_lock_irq(&chip->lock);
+
+       ad1889_mute(chip);
+
+       /* Turn off interrupt on count and zero DMA registers */
+       ad1889_channel_reset(chip, AD_CHAN_WAV | AD_CHAN_ADC);
+
+       /* clear DISR. If we don't, we'd better jump off the Eiffel Tower */
+       ad1889_writel(chip, AD_DMA_DISR, AD_DMA_DISR_PTAI | AD_DMA_DISR_PMAI);
+       ad1889_readl(chip, AD_DMA_DISR);        /* flush, dammit! */
+
+       spin_unlock_irq(&chip->lock);
+
+       synchronize_irq(chip->irq);
+       
+       if (chip->irq >= 0)
+               free_irq(chip->irq, (void*)chip);
+
+skip_hw:
+       if (chip->iobase)
+               iounmap(chip->iobase);
+
+       pci_release_regions(chip->pci);
+       pci_disable_device(chip->pci);
+
+       kfree(chip);
+       return 0;
+}
+
+static inline int
+snd_ad1889_dev_free(snd_device_t *device) 
+{
+       struct snd_ad1889 *chip = device->device_data;
+       return snd_ad1889_free(chip);
+}
+
+static int __devinit
+snd_ad1889_init(struct snd_ad1889 *chip) 
+{
+       ad1889_writew(chip, AD_DS_CCS, AD_DS_CCS_CLKEN); /* turn on clock */
+       ad1889_readw(chip, AD_DS_CCS);  /* flush posted write */
+
+       mdelay(10);
+
+       /* enable Master and Target abort interrupts */
+       ad1889_writel(chip, AD_DMA_DISR, AD_DMA_DISR_PMAE | AD_DMA_DISR_PTAE);
+
+       return 0;
+}
+
+static int __devinit
+snd_ad1889_create(snd_card_t *card,
+                 struct pci_dev *pci,
+                 struct snd_ad1889 **rchip)
+{
+       int err;
+
+       struct snd_ad1889 *chip;
+       static snd_device_ops_t ops = {
+               .dev_free = snd_ad1889_dev_free,
+       };
+
+       *rchip = NULL;
+
+       if ((err = pci_enable_device(pci)) < 0)
+               return err;
+       
+       /* check PCI availability (32bit DMA) */
+       if (pci_set_dma_mask(pci, 0xffffffff) < 0 ||
+           pci_set_consistent_dma_mask(pci, 0xffffffff) < 0) {
+               printk(KERN_ERR PFX "error setting 32-bit DMA mask.\n");
+               pci_disable_device(pci);
+               return -ENXIO;
+       }
+
+       /* allocate chip specific data with zero-filled memory */
+       if ((chip = kcalloc(1, sizeof(*chip), GFP_KERNEL)) == NULL) {
+               pci_disable_device(pci);
+               return -ENOMEM;
+       }
+
+       chip->card = card;
+       card->private_data = chip;
+       chip->pci = pci;
+       chip->irq = -1;
+
+       /* (1) PCI resource allocation */
+       if ((err = pci_request_regions(pci, card->driver)) < 0)
+               goto free_and_ret;
+
+       chip->bar = pci_resource_start(pci, 0);
+       chip->iobase = ioremap_nocache(chip->bar, pci_resource_len(pci, 0));
+       if (chip->iobase == NULL) {
+               printk(KERN_ERR PFX "unable to reserve region.\n");
+               err = -EBUSY;
+               goto free_and_ret;
+       }
+       
+       pci_set_master(pci);
+
+       spin_lock_init(&chip->lock);    /* only now can we call ad1889_free */
+
+       if (request_irq(pci->irq, snd_ad1889_interrupt,
+                       SA_INTERRUPT|SA_SHIRQ, card->driver, (void*)chip)) {
+               printk(KERN_ERR PFX "cannot obtain IRQ %d\n", pci->irq);
+               snd_ad1889_free(chip);
+               return -EBUSY;
+       }
+
+       chip->irq = pci->irq;
+       synchronize_irq(chip->irq);
+
+       /* (2) initialization of the chip hardware */
+       if ((err = snd_ad1889_init(chip)) < 0) {
+               snd_ad1889_free(chip);
+               return err;
+       }
+
+       if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
+               snd_ad1889_free(chip);
+               return err;
+       }
+
+       snd_card_set_dev(card, &pci->dev);
+
+       *rchip = chip;
+
+       return 0;
+
+free_and_ret:
+       if (chip)
+               kfree(chip);
+       pci_disable_device(pci);
+
+       return err;
+}
+
+static int __devinit
+snd_ad1889_probe(struct pci_dev *pci,
+                const struct pci_device_id *pci_id)
+{
+       int err;
+       static int devno;
+       snd_card_t *card;
+       struct snd_ad1889 *chip;
+
+       /* (1) */
+       if (devno >= SNDRV_CARDS)
+               return -ENODEV;
+       if (!enable[devno]) {
+               devno++;
+               return -ENOENT;
+       }
+
+       /* (2) */
+       card = snd_card_new(index[devno], id[devno], THIS_MODULE, 0);
+       /* XXX REVISIT: we can probably allocate chip in this call */
+       if (card == NULL)
+               return -ENOMEM;
+
+       strcpy(card->driver, "AD1889");
+       strcpy(card->shortname, "Analog Devices AD1889");
+
+       /* (3) */
+       err = snd_ad1889_create(card, pci, &chip);
+       if (err < 0)
+               goto free_and_ret;
+
+       /* (4) */
+       sprintf(card->longname, "%s at 0x%lx irq %i",
+               card->shortname, chip->bar, chip->irq);
+
+       /* (5) */
+       /* register AC97 mixer */
+       err = snd_ad1889_ac97_init(chip, ac97_quirk[devno]);
+       if (err < 0)
+               goto free_and_ret;
+       
+       err = snd_ad1889_pcm_init(chip, 0, NULL);
+       if (err < 0)
+               goto free_and_ret;
+
+       /* register proc interface */
+       snd_ad1889_proc_init(chip);
+
+       /* (6) */
+       err = snd_card_register(card);
+       if (err < 0)
+               goto free_and_ret;
+
+       /* (7) */
+       pci_set_drvdata(pci, card);
+
+       devno++;
+       return 0;
+
+free_and_ret:
+       snd_card_free(card);
+       return err;
+}
+
+static void __devexit
+snd_ad1889_remove(struct pci_dev *pci)
+{
+       snd_card_free(pci_get_drvdata(pci));
+       pci_set_drvdata(pci, NULL);
+}
+
+static struct pci_device_id snd_ad1889_ids[] = {
+       { PCI_DEVICE(PCI_VENDOR_ID_ANALOG_DEVICES, PCI_DEVICE_ID_AD1889JS) },
+       { 0, },
+};
+MODULE_DEVICE_TABLE(pci, snd_ad1889_ids);
+
+static struct pci_driver ad1889_pci = {
+       .name = "AD1889 Audio",
+       .id_table = snd_ad1889_ids,
+       .probe = snd_ad1889_probe,
+       .remove = __devexit_p(snd_ad1889_remove),
+};
+
+static int __init
+alsa_ad1889_init(void)
+{
+       return pci_register_driver(&ad1889_pci);
+}
+
+static void __exit
+alsa_ad1889_fini(void)
+{
+       pci_unregister_driver(&ad1889_pci);
+}
+
+module_init(alsa_ad1889_init);
+module_exit(alsa_ad1889_fini);
diff --git a/sound/pci/ad1889.h b/sound/pci/ad1889.h
new file mode 100644 (file)
index 0000000..5e6dad5
--- /dev/null
@@ -0,0 +1,189 @@
+/* Analog Devices 1889 audio driver
+ * Copyright (C) 2004, Kyle McMartin <kyle@parisc-linux.org>
+ */
+
+#ifndef __AD1889_H__
+#define __AD1889_H__
+
+#define AD_DS_WSMC     0x00 /* wave/synthesis channel mixer control */
+#define  AD_DS_WSMC_SYEN 0x0004 /* synthesis channel enable */
+#define  AD_DS_WSMC_SYRQ 0x0030 /* synth. fifo request point */
+#define  AD_DS_WSMC_WA16 0x0100 /* wave channel 16bit select */
+#define  AD_DS_WSMC_WAST 0x0200 /* wave channel stereo select */
+#define  AD_DS_WSMC_WAEN 0x0400 /* wave channel enable */
+#define  AD_DS_WSMC_WARQ 0x3000 /* wave fifo request point */
+
+#define AD_DS_RAMC     0x02 /* resampler/ADC channel mixer control */
+#define  AD_DS_RAMC_AD16 0x0001 /* ADC channel 16bit select */
+#define  AD_DS_RAMC_ADST 0x0002 /* ADC channel stereo select */
+#define  AD_DS_RAMC_ADEN 0x0004 /* ADC channel enable */
+#define  AD_DS_RAMC_ACRQ 0x0030 /* ADC fifo request point */
+#define  AD_DS_RAMC_REEN 0x0400 /* resampler channel enable */
+#define  AD_DS_RAMC_RERQ 0x3000 /* res. fifo request point */
+
+#define AD_DS_WADA     0x04 /* wave channel mix attenuation */
+#define  AD_DS_WADA_RWAM 0x0080 /* right wave mute */
+#define  AD_DS_WADA_RWAA 0x001f /* right wave attenuation */
+#define  AD_DS_WADA_LWAM 0x8000 /* left wave mute */
+#define  AD_DS_WADA_LWAA 0x3e00 /* left wave attenuation */
+
+#define AD_DS_SYDA     0x06 /* synthesis channel mix attenuation */
+#define  AD_DS_SYDA_RSYM 0x0080 /* right synthesis mute */
+#define  AD_DS_SYDA_RSYA 0x001f /* right synthesis attenuation */
+#define  AD_DS_SYDA_LSYM 0x8000 /* left synthesis mute */
+#define  AD_DS_SYDA_LSYA 0x3e00 /* left synthesis attenuation */
+
+#define AD_DS_WAS      0x08 /* wave channel sample rate */
+#define  AD_DS_WAS_WAS   0xffff /* sample rate mask */
+
+#define AD_DS_RES      0x0a /* resampler channel sample rate */
+#define  AD_DS_RES_RES   0xffff /* sample rate mask */
+
+#define AD_DS_CCS      0x0c /* chip control/status */
+#define  AD_DS_CCS_ADO   0x0001 /* ADC channel overflow */
+#define  AD_DS_CCS_REO   0x0002 /* resampler channel overflow */
+#define  AD_DS_CCS_SYU   0x0004 /* synthesis channel underflow */
+#define  AD_DS_CCS_WAU   0x0008 /* wave channel underflow */
+/* bits 4 -> 7, 9, 11 -> 14 reserved */
+#define  AD_DS_CCS_XTD   0x0100 /* xtd delay control (4096 clock cycles) */
+#define  AD_DS_CCS_PDALL 0x0400 /* power */
+#define  AD_DS_CCS_CLKEN 0x8000 /* clock */
+
+#define AD_DMA_RESBA   0x40 /* RES base address */
+#define AD_DMA_RESCA   0x44 /* RES current address */
+#define AD_DMA_RESBC   0x48 /* RES base count */
+#define AD_DMA_RESCC   0x4c /* RES current count */
+
+#define AD_DMA_ADCBA   0x50 /* ADC base address */
+#define AD_DMA_ADCCA   0x54 /* ADC current address */
+#define AD_DMA_ADCBC   0x58 /* ADC base count */
+#define AD_DMA_ADCCC   0x5c /* ADC current count */
+
+#define AD_DMA_SYNBA   0x60 /* synth base address */
+#define AD_DMA_SYNCA   0x64 /* synth current address */
+#define AD_DMA_SYNBC   0x68 /* synth base count */
+#define AD_DMA_SYNCC   0x6c /* synth current count */
+
+#define AD_DMA_WAVBA   0x70 /* wave base address */
+#define AD_DMA_WAVCA   0x74 /* wave current address */
+#define AD_DMA_WAVBC   0x78 /* wave base count */
+#define AD_DMA_WAVCC   0x7c /* wave current count */
+
+#define AD_DMA_RESIC   0x80 /* RES dma interrupt current byte count */
+#define AD_DMA_RESIB   0x84 /* RES dma interrupt base byte count */
+
+#define AD_DMA_ADCIC   0x88 /* ADC dma interrupt current byte count */
+#define AD_DMA_ADCIB   0x8c /* ADC dma interrupt base byte count */
+
+#define AD_DMA_SYNIC   0x90 /* synth dma interrupt current byte count */
+#define AD_DMA_SYNIB   0x94 /* synth dma interrupt base byte count */
+
+#define AD_DMA_WAVIC   0x98 /* wave dma interrupt current byte count */
+#define AD_DMA_WAVIB   0x9c /* wave dma interrupt base byte count */
+
+#define  AD_DMA_ICC    0xffffff /* current byte count mask */
+#define  AD_DMA_IBC    0xffffff /* base byte count mask */
+/* bits 24 -> 31 reserved */
+
+/* 4 bytes pad */
+#define AD_DMA_ADC     0xa8    /* ADC      dma control and status */
+#define AD_DMA_SYNTH   0xb0    /* Synth    dma control and status */
+#define AD_DMA_WAV     0xb8    /* wave     dma control and status */
+#define AD_DMA_RES     0xa0    /* Resample dma control and status */
+
+#define  AD_DMA_SGDE   0x0001 /* SGD mode enable */
+#define  AD_DMA_LOOP   0x0002 /* loop enable */
+#define  AD_DMA_IM     0x000c /* interrupt mode mask */
+#define  AD_DMA_IM_DIS (~AD_DMA_IM)    /* disable */
+#define  AD_DMA_IM_CNT 0x0004 /* interrupt on count */
+#define  AD_DMA_IM_SGD 0x0008 /* interrupt on SGD flag */
+#define  AD_DMA_IM_EOL 0x000c /* interrupt on End of Linked List */
+#define  AD_DMA_SGDS   0x0030 /* SGD status */
+#define  AD_DMA_SFLG   0x0040 /* SGD flag */
+#define  AD_DMA_EOL    0x0080 /* SGD end of list */
+/* bits 8 -> 15 reserved */
+
+#define AD_DMA_DISR    0xc0 /* dma interrupt status */
+#define  AD_DMA_DISR_RESI 0x000001 /* resampler channel interrupt */
+#define  AD_DMA_DISR_ADCI 0x000002 /* ADC channel interrupt */
+#define  AD_DMA_DISR_SYNI 0x000004 /* synthesis channel interrupt */
+#define  AD_DMA_DISR_WAVI 0x000008 /* wave channel interrupt */
+/* bits 4, 5 reserved */
+#define  AD_DMA_DISR_SEPS 0x000040 /* serial eeprom status */
+/* bits 7 -> 13 reserved */
+#define  AD_DMA_DISR_PMAI 0x004000 /* pci master abort interrupt */
+#define  AD_DMA_DISR_PTAI 0x008000 /* pci target abort interrupt */
+#define  AD_DMA_DISR_PTAE 0x010000 /* pci target abort interrupt enable */
+#define  AD_DMA_DISR_PMAE 0x020000 /* pci master abort interrupt enable */
+/* bits 19 -> 31 reserved */
+
+/* interrupt mask */
+#define  AD_INTR_MASK     (AD_DMA_DISR_RESI|AD_DMA_DISR_ADCI| \
+                           AD_DMA_DISR_WAVI|AD_DMA_DISR_SYNI| \
+                           AD_DMA_DISR_PMAI|AD_DMA_DISR_PTAI)
+
+#define AD_DMA_CHSS    0xc4 /* dma channel stop status */
+#define  AD_DMA_CHSS_RESS 0x000001 /* resampler channel stopped */
+#define  AD_DMA_CHSS_ADCS 0x000002 /* ADC channel stopped */
+#define  AD_DMA_CHSS_SYNS 0x000004 /* synthesis channel stopped */
+#define  AD_DMA_CHSS_WAVS 0x000008 /* wave channel stopped */
+
+#define AD_GPIO_IPC    0xc8    /* gpio port control */
+#define AD_GPIO_OP     0xca    /* gpio output port status */
+#define AD_GPIO_IP     0xcc    /* gpio  input port status */
+
+#define AD_AC97_BASE   0x100   /* ac97 base register */
+
+#define AD_AC97_RESET   0x100   /* reset */
+
+#define AD_AC97_PWR_CTL        0x126   /* == AC97_POWERDOWN */
+#define  AD_AC97_PWR_ADC 0x0001 /* ADC ready status */
+#define  AD_AC97_PWR_DAC 0x0002 /* DAC ready status */
+#define  AD_AC97_PWR_PR0 0x0100 /* PR0 (ADC) powerdown */
+#define  AD_AC97_PWR_PR1 0x0200 /* PR1 (DAC) powerdown */
+
+#define AD_MISC_CTL     0x176 /* misc control */
+#define  AD_MISC_CTL_DACZ   0x8000 /* set for zero fill, unset for repeat */
+#define  AD_MISC_CTL_ARSR   0x0001 /* set for SR1, unset for SR0 */
+#define  AD_MISC_CTL_ALSR   0x0100
+#define  AD_MISC_CTL_DLSR   0x0400
+#define  AD_MISC_CTL_DRSR   0x0004
+
+#define AD_AC97_SR0     0x178 /* sample rate 0, 0xbb80 == 48K */
+#define  AD_AC97_SR0_48K 0xbb80 /* 48KHz */
+#define AD_AC97_SR1     0x17a /* sample rate 1 */
+
+#define AD_AC97_ACIC   0x180 /* ac97 codec interface control */
+#define  AD_AC97_ACIC_ACIE  0x0001 /* analog codec interface enable */
+#define  AD_AC97_ACIC_ACRD  0x0002 /* analog codec reset disable */
+#define  AD_AC97_ACIC_ASOE  0x0004 /* audio stream output enable */
+#define  AD_AC97_ACIC_VSRM  0x0008 /* variable sample rate mode */
+#define  AD_AC97_ACIC_FSDH  0x0100 /* force SDATA_OUT high */
+#define  AD_AC97_ACIC_FSYH  0x0200 /* force sync high */
+#define  AD_AC97_ACIC_ACRDY 0x8000 /* analog codec ready status */
+/* bits 10 -> 14 reserved */
+
+
+#define AD_DS_MEMSIZE  512
+#define AD_OPL_MEMSIZE 16
+#define AD_MIDI_MEMSIZE        16
+
+#define AD_WAV_STATE   0
+#define AD_ADC_STATE   1
+#define AD_MAX_STATES  2
+
+#define AD_CHAN_WAV    0x0001
+#define AD_CHAN_ADC    0x0002
+#define AD_CHAN_RES    0x0004
+#define AD_CHAN_SYN    0x0008
+
+
+/* The chip would support 4 GB buffers and 16 MB periods,
+ * but let's not overdo it ... */
+#define BUFFER_BYTES_MAX       (256 * 1024)
+#define PERIOD_BYTES_MIN       32
+#define PERIOD_BYTES_MAX       (BUFFER_BYTES_MAX / 2)
+#define PERIODS_MIN            2
+#define PERIODS_MAX            (BUFFER_BYTES_MAX / PERIOD_BYTES_MIN)
+
+#endif /* __AD1889_H__ */