#include <linux/bitops.h>
#include <linux/debugfs.h>
#include <linux/platform_device.h>
+#include <linux/ctype.h>
#include <linux/slab.h>
#include <sound/ac97_codec.h>
#include <sound/core.h>
#define NAME_SIZE 32
-static DEFINE_MUTEX(pcm_mutex);
static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq);
#ifdef CONFIG_DEBUG_FS
static LIST_HEAD(platform_list);
static LIST_HEAD(codec_list);
-static int snd_soc_register_card(struct snd_soc_card *card);
-static int snd_soc_unregister_card(struct snd_soc_card *card);
-static int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num);
+int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num);
/*
* This is a timeout to do a DAPM powerdown after a stream is closed().
module_param(pmdown_time, int, 0);
MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");
+/* returns the minimum number of bytes needed to represent
+ * a particular given value */
+static int min_bytes_needed(unsigned long val)
+{
+ int c = 0;
+ int i;
+
+ for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c)
+ if (val & (1UL << i))
+ break;
+ c = (sizeof val * 8) - c;
+ if (!c || (c % 8))
+ c = (c + 8) / 8;
+ else
+ c /= 8;
+ return c;
+}
+
+/* fill buf which is 'len' bytes with a formatted
+ * string of the form 'reg: value\n' */
+static int format_register_str(struct snd_soc_codec *codec,
+ unsigned int reg, char *buf, size_t len)
+{
+ int wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
+ int regsize = codec->driver->reg_word_size * 2;
+ int ret;
+ char tmpbuf[len + 1];
+ char regbuf[regsize + 1];
+
+ /* since tmpbuf is allocated on the stack, warn the callers if they
+ * try to abuse this function */
+ WARN_ON(len > 63);
+
+ /* +2 for ': ' and + 1 for '\n' */
+ if (wordsize + regsize + 2 + 1 != len)
+ return -EINVAL;
+
+ ret = snd_soc_read(codec , reg);
+ if (ret < 0) {
+ memset(regbuf, 'X', regsize);
+ regbuf[regsize] = '\0';
+ } else {
+ snprintf(regbuf, regsize + 1, "%.*x", regsize, ret);
+ }
+
+ /* prepare the buffer */
+ snprintf(tmpbuf, len + 1, "%.*x: %s\n", wordsize, reg, regbuf);
+ /* copy it back to the caller without the '\0' */
+ memcpy(buf, tmpbuf, len);
+
+ return 0;
+}
+
/* codec register dump */
-static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf)
+static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf,
+ size_t count, loff_t pos)
{
- int ret, i, step = 1, count = 0;
+ int i, step = 1;
+ int wordsize, regsize;
+ int len;
+ size_t total = 0;
+ loff_t p = 0;
+
+ wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
+ regsize = codec->driver->reg_word_size * 2;
+
+ len = wordsize + regsize + 2 + 1;
if (!codec->driver->reg_cache_size)
return 0;
if (codec->driver->reg_cache_step)
step = codec->driver->reg_cache_step;
- count += sprintf(buf, "%s registers\n", codec->name);
for (i = 0; i < codec->driver->reg_cache_size; i += step) {
- if (codec->driver->readable_register && !codec->driver->readable_register(codec, i))
+ if (codec->readable_register && !codec->readable_register(codec, i))
continue;
-
- count += sprintf(buf + count, "%2x: ", i);
- if (count >= PAGE_SIZE - 1)
- break;
-
if (codec->driver->display_register) {
count += codec->driver->display_register(codec, buf + count,
PAGE_SIZE - count, i);
} else {
- /* If the read fails it's almost certainly due to
- * the register being volatile and the device being
- * powered off.
- */
- ret = snd_soc_read(codec, i);
- if (ret >= 0)
- count += snprintf(buf + count,
- PAGE_SIZE - count,
- "%4x", ret);
- else
- count += snprintf(buf + count,
- PAGE_SIZE - count,
- "<no data: %d>", ret);
+ /* only support larger than PAGE_SIZE bytes debugfs
+ * entries for the default case */
+ if (p >= pos) {
+ if (total + len >= count - 1)
+ break;
+ format_register_str(codec, i, buf + total, len);
+ total += len;
+ }
+ p += len;
}
-
- if (count >= PAGE_SIZE - 1)
- break;
-
- count += snprintf(buf + count, PAGE_SIZE - count, "\n");
- if (count >= PAGE_SIZE - 1)
- break;
}
- /* Truncate count; min() would cause a warning */
- if (count >= PAGE_SIZE)
- count = PAGE_SIZE - 1;
+ total = min(total, count - 1);
- return count;
+ return total;
}
+
static ssize_t codec_reg_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct snd_soc_pcm_runtime *rtd =
container_of(dev, struct snd_soc_pcm_runtime, dev);
- return soc_codec_reg_show(rtd->codec, buf);
+ return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0);
}
static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
}
static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
- size_t count, loff_t *ppos)
+ size_t count, loff_t *ppos)
{
ssize_t ret;
struct snd_soc_codec *codec = file->private_data;
- char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
+ char *buf;
+
+ if (*ppos < 0 || !count)
+ return -EINVAL;
+
+ buf = kmalloc(count, GFP_KERNEL);
if (!buf)
return -ENOMEM;
- ret = soc_codec_reg_show(codec, buf);
- if (ret >= 0)
- ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
+
+ ret = soc_codec_reg_show(codec, buf, count, *ppos);
+ if (ret >= 0) {
+ if (copy_to_user(user_buf, buf, ret)) {
+ kfree(buf);
+ return -EFAULT;
+ }
+ *ppos += ret;
+ }
+
kfree(buf);
return ret;
}
const char __user *user_buf, size_t count, loff_t *ppos)
{
char buf[32];
- int buf_size;
+ size_t buf_size;
char *start = buf;
unsigned long reg, value;
int step = 1;
while (*start == ' ')
start++;
reg = simple_strtoul(start, &start, 16);
- if ((reg >= codec->driver->reg_cache_size) || (reg % step))
- return -EINVAL;
while (*start == ' ')
start++;
if (strict_strtoul(start, 16, &value))
return;
}
+ debugfs_create_bool("cache_sync", 0444, codec->debugfs_codec_root,
+ &codec->cache_sync);
+ debugfs_create_bool("cache_only", 0444, codec->debugfs_codec_root,
+ &codec->cache_only);
+
codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
codec->debugfs_codec_root,
codec, &codec_reg_fops);
printk(KERN_WARNING
"ASoC: Failed to create codec register debugfs file\n");
- codec->dapm.debugfs_dapm = debugfs_create_dir("dapm",
- codec->debugfs_codec_root);
- if (!codec->dapm.debugfs_dapm)
- printk(KERN_WARNING
- "Failed to create DAPM debugfs directory\n");
-
- snd_soc_dapm_debugfs_init(&codec->dapm);
+ snd_soc_dapm_debugfs_init(&codec->dapm, codec->debugfs_codec_root);
}
static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
}
#endif
-static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
- struct snd_soc_dai *codec_dai = rtd->codec_dai;
- int ret;
-
- if (codec_dai->driver->symmetric_rates || cpu_dai->driver->symmetric_rates ||
- rtd->dai_link->symmetric_rates) {
- dev_dbg(&rtd->dev, "Symmetry forces %dHz rate\n",
- rtd->rate);
-
- ret = snd_pcm_hw_constraint_minmax(substream->runtime,
- SNDRV_PCM_HW_PARAM_RATE,
- rtd->rate,
- rtd->rate);
- if (ret < 0) {
- dev_err(&rtd->dev,
- "Unable to apply rate symmetry constraint: %d\n", ret);
- return ret;
- }
- }
-
- return 0;
-}
-
-/*
- * Called by ALSA when a PCM substream is opened, the runtime->hw record is
- * then initialized and any private data can be allocated. This also calls
- * startup for the cpu DAI, platform, machine and codec DAI.
- */
-static int soc_pcm_open(struct snd_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct snd_soc_platform *platform = rtd->platform;
- struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
- struct snd_soc_dai *codec_dai = rtd->codec_dai;
- struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver;
- struct snd_soc_dai_driver *codec_dai_drv = codec_dai->driver;
- int ret = 0;
-
- mutex_lock(&pcm_mutex);
-
- /* startup the audio subsystem */
- if (cpu_dai->driver->ops->startup) {
- ret = cpu_dai->driver->ops->startup(substream, cpu_dai);
- if (ret < 0) {
- printk(KERN_ERR "asoc: can't open interface %s\n",
- cpu_dai->name);
- goto out;
- }
- }
-
- if (platform->driver->ops->open) {
- ret = platform->driver->ops->open(substream);
- if (ret < 0) {
- printk(KERN_ERR "asoc: can't open platform %s\n", platform->name);
- goto platform_err;
- }
- }
-
- if (codec_dai->driver->ops->startup) {
- ret = codec_dai->driver->ops->startup(substream, codec_dai);
- if (ret < 0) {
- printk(KERN_ERR "asoc: can't open codec %s\n",
- codec_dai->name);
- goto codec_dai_err;
- }
- }
-
- if (rtd->dai_link->ops && rtd->dai_link->ops->startup) {
- ret = rtd->dai_link->ops->startup(substream);
- if (ret < 0) {
- printk(KERN_ERR "asoc: %s startup failed\n", rtd->dai_link->name);
- goto machine_err;
- }
- }
-
- /* Check that the codec and cpu DAIs are compatible */
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- runtime->hw.rate_min =
- max(codec_dai_drv->playback.rate_min,
- cpu_dai_drv->playback.rate_min);
- runtime->hw.rate_max =
- min(codec_dai_drv->playback.rate_max,
- cpu_dai_drv->playback.rate_max);
- runtime->hw.channels_min =
- max(codec_dai_drv->playback.channels_min,
- cpu_dai_drv->playback.channels_min);
- runtime->hw.channels_max =
- min(codec_dai_drv->playback.channels_max,
- cpu_dai_drv->playback.channels_max);
- runtime->hw.formats =
- codec_dai_drv->playback.formats & cpu_dai_drv->playback.formats;
- runtime->hw.rates =
- codec_dai_drv->playback.rates & cpu_dai_drv->playback.rates;
- if (codec_dai_drv->playback.rates
- & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
- runtime->hw.rates |= cpu_dai_drv->playback.rates;
- if (cpu_dai_drv->playback.rates
- & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
- runtime->hw.rates |= codec_dai_drv->playback.rates;
- } else {
- runtime->hw.rate_min =
- max(codec_dai_drv->capture.rate_min,
- cpu_dai_drv->capture.rate_min);
- runtime->hw.rate_max =
- min(codec_dai_drv->capture.rate_max,
- cpu_dai_drv->capture.rate_max);
- runtime->hw.channels_min =
- max(codec_dai_drv->capture.channels_min,
- cpu_dai_drv->capture.channels_min);
- runtime->hw.channels_max =
- min(codec_dai_drv->capture.channels_max,
- cpu_dai_drv->capture.channels_max);
- runtime->hw.formats =
- codec_dai_drv->capture.formats & cpu_dai_drv->capture.formats;
- runtime->hw.rates =
- codec_dai_drv->capture.rates & cpu_dai_drv->capture.rates;
- if (codec_dai_drv->capture.rates
- & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
- runtime->hw.rates |= cpu_dai_drv->capture.rates;
- if (cpu_dai_drv->capture.rates
- & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
- runtime->hw.rates |= codec_dai_drv->capture.rates;
- }
-
- snd_pcm_limit_hw_rates(runtime);
- if (!runtime->hw.rates) {
- printk(KERN_ERR "asoc: %s <-> %s No matching rates\n",
- codec_dai->name, cpu_dai->name);
- goto config_err;
- }
- if (!runtime->hw.formats) {
- printk(KERN_ERR "asoc: %s <-> %s No matching formats\n",
- codec_dai->name, cpu_dai->name);
- goto config_err;
- }
- if (!runtime->hw.channels_min || !runtime->hw.channels_max) {
- printk(KERN_ERR "asoc: %s <-> %s No matching channels\n",
- codec_dai->name, cpu_dai->name);
- goto config_err;
- }
-
- /* Symmetry only applies if we've already got an active stream. */
- if (cpu_dai->active || codec_dai->active) {
- ret = soc_pcm_apply_symmetry(substream);
- if (ret != 0)
- goto config_err;
- }
-
- pr_debug("asoc: %s <-> %s info:\n",
- codec_dai->name, cpu_dai->name);
- pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates);
- pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min,
- runtime->hw.channels_max);
- pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min,
- runtime->hw.rate_max);
-
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- cpu_dai->playback_active++;
- codec_dai->playback_active++;
- } else {
- cpu_dai->capture_active++;
- codec_dai->capture_active++;
- }
- cpu_dai->active++;
- codec_dai->active++;
- rtd->codec->active++;
- mutex_unlock(&pcm_mutex);
- return 0;
-
-config_err:
- if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown)
- rtd->dai_link->ops->shutdown(substream);
-
-machine_err:
- if (codec_dai->driver->ops->shutdown)
- codec_dai->driver->ops->shutdown(substream, codec_dai);
-
-codec_dai_err:
- if (platform->driver->ops->close)
- platform->driver->ops->close(substream);
-
-platform_err:
- if (cpu_dai->driver->ops->shutdown)
- cpu_dai->driver->ops->shutdown(substream, cpu_dai);
-out:
- mutex_unlock(&pcm_mutex);
- return ret;
-}
-
-/*
- * Power down the audio subsystem pmdown_time msecs after close is called.
- * This is to ensure there are no pops or clicks in between any music tracks
- * due to DAPM power cycling.
- */
-static void close_delayed_work(struct work_struct *work)
-{
- struct snd_soc_pcm_runtime *rtd =
- container_of(work, struct snd_soc_pcm_runtime, delayed_work.work);
- struct snd_soc_dai *codec_dai = rtd->codec_dai;
-
- mutex_lock(&pcm_mutex);
-
- pr_debug("pop wq checking: %s status: %s waiting: %s\n",
- codec_dai->driver->playback.stream_name,
- codec_dai->playback_active ? "active" : "inactive",
- codec_dai->pop_wait ? "yes" : "no");
-
- /* are we waiting on this codec DAI stream */
- if (codec_dai->pop_wait == 1) {
- codec_dai->pop_wait = 0;
- snd_soc_dapm_stream_event(rtd,
- codec_dai->driver->playback.stream_name,
- SND_SOC_DAPM_STREAM_STOP);
- }
-
- mutex_unlock(&pcm_mutex);
-}
-
-/*
- * Called by ALSA when a PCM substream is closed. Private data can be
- * freed here. The cpu DAI, codec DAI, machine and platform are also
- * shutdown.
- */
-static int soc_codec_close(struct snd_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_platform *platform = rtd->platform;
- struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
- struct snd_soc_dai *codec_dai = rtd->codec_dai;
- struct snd_soc_codec *codec = rtd->codec;
-
- mutex_lock(&pcm_mutex);
-
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- cpu_dai->playback_active--;
- codec_dai->playback_active--;
- } else {
- cpu_dai->capture_active--;
- codec_dai->capture_active--;
- }
-
- cpu_dai->active--;
- codec_dai->active--;
- codec->active--;
-
- /* Muting the DAC suppresses artifacts caused during digital
- * shutdown, for example from stopping clocks.
- */
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- snd_soc_dai_digital_mute(codec_dai, 1);
-
- if (cpu_dai->driver->ops->shutdown)
- cpu_dai->driver->ops->shutdown(substream, cpu_dai);
-
- if (codec_dai->driver->ops->shutdown)
- codec_dai->driver->ops->shutdown(substream, codec_dai);
-
- if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown)
- rtd->dai_link->ops->shutdown(substream);
-
- if (platform->driver->ops->close)
- platform->driver->ops->close(substream);
- cpu_dai->runtime = NULL;
-
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- /* start delayed pop wq here for playback streams */
- codec_dai->pop_wait = 1;
- schedule_delayed_work(&rtd->delayed_work,
- msecs_to_jiffies(rtd->pmdown_time));
- } else {
- /* capture streams can be powered down now */
- snd_soc_dapm_stream_event(rtd,
- codec_dai->driver->capture.stream_name,
- SND_SOC_DAPM_STREAM_STOP);
- }
-
- mutex_unlock(&pcm_mutex);
- return 0;
-}
-
-/*
- * Called by ALSA when the PCM substream is prepared, can set format, sample
- * rate, etc. This function is non atomic and can be called multiple times,
- * it can refer to the runtime info.
- */
-static int soc_pcm_prepare(struct snd_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_platform *platform = rtd->platform;
- struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
- struct snd_soc_dai *codec_dai = rtd->codec_dai;
- int ret = 0;
-
- mutex_lock(&pcm_mutex);
-
- if (rtd->dai_link->ops && rtd->dai_link->ops->prepare) {
- ret = rtd->dai_link->ops->prepare(substream);
- if (ret < 0) {
- printk(KERN_ERR "asoc: machine prepare error\n");
- goto out;
- }
- }
-
- if (platform->driver->ops->prepare) {
- ret = platform->driver->ops->prepare(substream);
- if (ret < 0) {
- printk(KERN_ERR "asoc: platform prepare error\n");
- goto out;
- }
- }
-
- if (codec_dai->driver->ops->prepare) {
- ret = codec_dai->driver->ops->prepare(substream, codec_dai);
- if (ret < 0) {
- printk(KERN_ERR "asoc: codec DAI prepare error\n");
- goto out;
- }
- }
-
- if (cpu_dai->driver->ops->prepare) {
- ret = cpu_dai->driver->ops->prepare(substream, cpu_dai);
- if (ret < 0) {
- printk(KERN_ERR "asoc: cpu DAI prepare error\n");
- goto out;
- }
- }
-
- /* cancel any delayed stream shutdown that is pending */
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
- codec_dai->pop_wait) {
- codec_dai->pop_wait = 0;
- cancel_delayed_work(&rtd->delayed_work);
- }
-
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- snd_soc_dapm_stream_event(rtd,
- codec_dai->driver->playback.stream_name,
- SND_SOC_DAPM_STREAM_START);
- else
- snd_soc_dapm_stream_event(rtd,
- codec_dai->driver->capture.stream_name,
- SND_SOC_DAPM_STREAM_START);
-
- snd_soc_dai_digital_mute(codec_dai, 0);
-
-out:
- mutex_unlock(&pcm_mutex);
- return ret;
-}
-
-/*
- * Called by ALSA when the hardware params are set by application. This
- * function can also be called multiple times and can allocate buffers
- * (using snd_pcm_lib_* ). It's non-atomic.
- */
-static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_platform *platform = rtd->platform;
- struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
- struct snd_soc_dai *codec_dai = rtd->codec_dai;
- int ret = 0;
-
- mutex_lock(&pcm_mutex);
-
- if (rtd->dai_link->ops && rtd->dai_link->ops->hw_params) {
- ret = rtd->dai_link->ops->hw_params(substream, params);
- if (ret < 0) {
- printk(KERN_ERR "asoc: machine hw_params failed\n");
- goto out;
- }
- }
-
- if (codec_dai->driver->ops->hw_params) {
- ret = codec_dai->driver->ops->hw_params(substream, params, codec_dai);
- if (ret < 0) {
- printk(KERN_ERR "asoc: can't set codec %s hw params\n",
- codec_dai->name);
- goto codec_err;
- }
- }
-
- if (cpu_dai->driver->ops->hw_params) {
- ret = cpu_dai->driver->ops->hw_params(substream, params, cpu_dai);
- if (ret < 0) {
- printk(KERN_ERR "asoc: interface %s hw params failed\n",
- cpu_dai->name);
- goto interface_err;
- }
- }
-
- if (platform->driver->ops->hw_params) {
- ret = platform->driver->ops->hw_params(substream, params);
- if (ret < 0) {
- printk(KERN_ERR "asoc: platform %s hw params failed\n",
- platform->name);
- goto platform_err;
- }
- }
-
- rtd->rate = params_rate(params);
-
-out:
- mutex_unlock(&pcm_mutex);
- return ret;
-
-platform_err:
- if (cpu_dai->driver->ops->hw_free)
- cpu_dai->driver->ops->hw_free(substream, cpu_dai);
-
-interface_err:
- if (codec_dai->driver->ops->hw_free)
- codec_dai->driver->ops->hw_free(substream, codec_dai);
-
-codec_err:
- if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free)
- rtd->dai_link->ops->hw_free(substream);
-
- mutex_unlock(&pcm_mutex);
- return ret;
-}
-
-/*
- * Frees resources allocated by hw_params, can be called multiple times
- */
-static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_platform *platform = rtd->platform;
- struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
- struct snd_soc_dai *codec_dai = rtd->codec_dai;
- struct snd_soc_codec *codec = rtd->codec;
-
- mutex_lock(&pcm_mutex);
-
- /* apply codec digital mute */
- if (!codec->active)
- snd_soc_dai_digital_mute(codec_dai, 1);
-
- /* free any machine hw params */
- if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free)
- rtd->dai_link->ops->hw_free(substream);
-
- /* free any DMA resources */
- if (platform->driver->ops->hw_free)
- platform->driver->ops->hw_free(substream);
-
- /* now free hw params for the DAIs */
- if (codec_dai->driver->ops->hw_free)
- codec_dai->driver->ops->hw_free(substream, codec_dai);
-
- if (cpu_dai->driver->ops->hw_free)
- cpu_dai->driver->ops->hw_free(substream, cpu_dai);
-
- mutex_unlock(&pcm_mutex);
- return 0;
-}
-
-static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_platform *platform = rtd->platform;
- struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
- struct snd_soc_dai *codec_dai = rtd->codec_dai;
- int ret;
-
- if (codec_dai->driver->ops->trigger) {
- ret = codec_dai->driver->ops->trigger(substream, cmd, codec_dai);
- if (ret < 0)
- return ret;
- }
-
- if (platform->driver->ops->trigger) {
- ret = platform->driver->ops->trigger(substream, cmd);
- if (ret < 0)
- return ret;
- }
-
- if (cpu_dai->driver->ops->trigger) {
- ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai);
- if (ret < 0)
- return ret;
- }
- return 0;
-}
-
-/*
- * soc level wrapper for pointer callback
- * If cpu_dai, codec_dai, platform driver has the delay callback, than
- * the runtime->delay will be updated accordingly.
- */
-static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_platform *platform = rtd->platform;
- struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
- struct snd_soc_dai *codec_dai = rtd->codec_dai;
- struct snd_pcm_runtime *runtime = substream->runtime;
- snd_pcm_uframes_t offset = 0;
- snd_pcm_sframes_t delay = 0;
-
- if (platform->driver->ops->pointer)
- offset = platform->driver->ops->pointer(substream);
-
- if (cpu_dai->driver->ops->delay)
- delay += cpu_dai->driver->ops->delay(substream, cpu_dai);
-
- if (codec_dai->driver->ops->delay)
- delay += codec_dai->driver->ops->delay(substream, codec_dai);
-
- if (platform->driver->delay)
- delay += platform->driver->delay(substream, codec_dai);
-
- runtime->delay = delay;
-
- return offset;
-}
-
-/* ASoC PCM operations */
-static struct snd_pcm_ops soc_pcm_ops = {
- .open = soc_pcm_open,
- .close = soc_codec_close,
- .hw_params = soc_pcm_hw_params,
- .hw_free = soc_pcm_hw_free,
- .prepare = soc_pcm_prepare,
- .trigger = soc_pcm_trigger,
- .pointer = soc_pcm_pointer,
-};
-
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
/* powers down audio subsystem for suspend */
-static int soc_suspend(struct device *dev)
+int snd_soc_suspend(struct device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct snd_soc_card *card = platform_get_drvdata(pdev);
+ struct snd_soc_card *card = dev_get_drvdata(dev);
struct snd_soc_codec *codec;
int i;
}
if (card->suspend_pre)
- card->suspend_pre(pdev, PMSG_SUSPEND);
+ card->suspend_pre(card);
for (i = 0; i < card->num_rtd; i++) {
struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
case SND_SOC_BIAS_OFF:
codec->driver->suspend(codec, PMSG_SUSPEND);
codec->suspended = 1;
+ codec->cache_sync = 1;
break;
default:
dev_dbg(codec->dev, "CODEC is on over suspend\n");
}
if (card->suspend_post)
- card->suspend_post(pdev, PMSG_SUSPEND);
+ card->suspend_post(card);
return 0;
}
+EXPORT_SYMBOL_GPL(snd_soc_suspend);
/* deferred resume work, so resume can complete before we finished
* setting our codec back up, which can be very slow on I2C
{
struct snd_soc_card *card =
container_of(work, struct snd_soc_card, deferred_resume_work);
- struct platform_device *pdev = to_platform_device(card->dev);
struct snd_soc_codec *codec;
int i;
snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
if (card->resume_pre)
- card->resume_pre(pdev);
+ card->resume_pre(card);
/* resume AC97 DAIs */
for (i = 0; i < card->num_rtd; i++) {
}
if (card->resume_post)
- card->resume_post(pdev);
+ card->resume_post(card);
dev_dbg(card->dev, "resume work completed\n");
}
/* powers up audio subsystem after a suspend */
-static int soc_resume(struct device *dev)
+int snd_soc_resume(struct device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct snd_soc_card *card = platform_get_drvdata(pdev);
- int i;
+ struct snd_soc_card *card = dev_get_drvdata(dev);
+ int i, ac97_control = 0;
/* AC97 devices might have other drivers hanging off them so
* need to resume immediately. Other drivers don't have that
*/
for (i = 0; i < card->num_rtd; i++) {
struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
- if (cpu_dai->driver->ac97_control) {
- dev_dbg(dev, "Resuming AC97 immediately\n");
- soc_resume_deferred(&card->deferred_resume_work);
- } else {
- dev_dbg(dev, "Scheduling resume work\n");
- if (!schedule_work(&card->deferred_resume_work))
- dev_err(dev, "resume work item may be lost\n");
- }
+ ac97_control |= cpu_dai->driver->ac97_control;
+ }
+ if (ac97_control) {
+ dev_dbg(dev, "Resuming AC97 immediately\n");
+ soc_resume_deferred(&card->deferred_resume_work);
+ } else {
+ dev_dbg(dev, "Scheduling resume work\n");
+ if (!schedule_work(&card->deferred_resume_work))
+ dev_err(dev, "resume work item may be lost\n");
}
return 0;
}
+EXPORT_SYMBOL_GPL(snd_soc_resume);
#else
-#define soc_suspend NULL
-#define soc_resume NULL
+#define snd_soc_suspend NULL
+#define snd_soc_resume NULL
#endif
static struct snd_soc_dai_ops null_dai_ops = {
struct snd_soc_codec *codec;
struct snd_soc_platform *platform;
struct snd_soc_dai *codec_dai, *cpu_dai;
+ const char *platform_name;
if (rtd->complete)
return 1;
/* no, then find CPU DAI from registered DAIs*/
list_for_each_entry(cpu_dai, &dai_list, list) {
if (!strcmp(cpu_dai->name, dai_link->cpu_dai_name)) {
-
- if (!try_module_get(cpu_dai->dev->driver->owner))
- return -ENODEV;
-
rtd->cpu_dai = cpu_dai;
goto find_codec;
}
dai_link->codec_name);
find_platform:
- /* do we already have the CODEC DAI for this link ? */
- if (rtd->platform) {
+ /* do we need a platform? */
+ if (rtd->platform)
goto out;
- }
- /* no, then find CPU DAI from registered DAIs*/
+
+ /* if there's no platform we match on the empty platform */
+ platform_name = dai_link->platform_name;
+ if (!platform_name)
+ platform_name = "snd-soc-dummy";
+
+ /* no, then find one from the set of registered platforms */
list_for_each_entry(platform, &platform_list, list) {
- if (!strcmp(platform->name, dai_link->platform_name)) {
+ if (!strcmp(platform->name, platform_name)) {
rtd->platform = platform;
goto out;
}
module_put(codec->dev->driver->owner);
}
-static void soc_remove_dai_link(struct snd_soc_card *card, int num)
+static void soc_remove_dai_link(struct snd_soc_card *card, int num, int order)
{
struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
struct snd_soc_codec *codec = rtd->codec;
}
/* remove the CODEC DAI */
- if (codec_dai && codec_dai->probed) {
+ if (codec_dai && codec_dai->probed &&
+ codec_dai->driver->remove_order == order) {
if (codec_dai->driver->remove) {
err = codec_dai->driver->remove(codec_dai);
if (err < 0)
}
/* remove the platform */
- if (platform && platform->probed) {
+ if (platform && platform->probed &&
+ platform->driver->remove_order == order) {
if (platform->driver->remove) {
err = platform->driver->remove(platform);
if (err < 0)
}
/* remove the CODEC */
- if (codec && codec->probed)
+ if (codec && codec->probed &&
+ codec->driver->remove_order == order)
soc_remove_codec(codec);
/* remove the cpu_dai */
- if (cpu_dai && cpu_dai->probed) {
+ if (cpu_dai && cpu_dai->probed &&
+ cpu_dai->driver->remove_order == order) {
if (cpu_dai->driver->remove) {
err = cpu_dai->driver->remove(cpu_dai);
if (err < 0)
}
}
+static void soc_remove_dai_links(struct snd_soc_card *card)
+{
+ int dai, order;
+
+ for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
+ order++) {
+ for (dai = 0; dai < card->num_rtd; dai++)
+ soc_remove_dai_link(card, dai, order);
+ }
+ card->num_rtd = 0;
+}
+
static void soc_set_name_prefix(struct snd_soc_card *card,
struct snd_soc_codec *codec)
{
struct snd_soc_codec *codec)
{
int ret = 0;
+ const struct snd_soc_codec_driver *driver = codec->driver;
codec->card = card;
codec->dapm.card = card;
soc_set_name_prefix(card, codec);
- if (codec->driver->probe) {
- ret = codec->driver->probe(codec);
+ if (!try_module_get(codec->dev->driver->owner))
+ return -ENODEV;
+
+ soc_init_codec_debugfs(codec);
+
+ if (driver->dapm_widgets)
+ snd_soc_dapm_new_controls(&codec->dapm, driver->dapm_widgets,
+ driver->num_dapm_widgets);
+
+ if (driver->probe) {
+ ret = driver->probe(codec);
if (ret < 0) {
dev_err(codec->dev,
"asoc: failed to probe CODEC %s: %d\n",
codec->name, ret);
- return ret;
+ goto err_probe;
}
}
- soc_init_codec_debugfs(codec);
+ if (driver->controls)
+ snd_soc_add_controls(codec, driver->controls,
+ driver->num_controls);
+ if (driver->dapm_routes)
+ snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes,
+ driver->num_dapm_routes);
/* mark codec as probed and add to card codec list */
- if (!try_module_get(codec->dev->driver->owner))
- return -ENODEV;
-
codec->probed = 1;
list_add(&codec->card_list, &card->codec_dev_list);
list_add(&codec->dapm.list, &card->dapm_list);
+ return 0;
+
+err_probe:
+ soc_cleanup_codec_debugfs(codec);
+ module_put(codec->dev->driver->owner);
+
+ return ret;
+}
+
+static int soc_probe_platform(struct snd_soc_card *card,
+ struct snd_soc_platform *platform)
+{
+ int ret = 0;
+ const struct snd_soc_platform_driver *driver = platform->driver;
+
+ platform->card = card;
+ platform->dapm.card = card;
+
+ if (!try_module_get(platform->dev->driver->owner))
+ return -ENODEV;
+
+ if (driver->dapm_widgets)
+ snd_soc_dapm_new_controls(&platform->dapm,
+ driver->dapm_widgets, driver->num_dapm_widgets);
+
+ if (driver->probe) {
+ ret = driver->probe(platform);
+ if (ret < 0) {
+ dev_err(platform->dev,
+ "asoc: failed to probe platform %s: %d\n",
+ platform->name, ret);
+ goto err_probe;
+ }
+ }
+
+ if (driver->controls)
+ snd_soc_add_platform_controls(platform, driver->controls,
+ driver->num_controls);
+ if (driver->dapm_routes)
+ snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes,
+ driver->num_dapm_routes);
+
+ /* mark platform as probed and add to card platform list */
+ platform->probed = 1;
+ list_add(&platform->card_list, &card->platform_dev_list);
+ list_add(&platform->dapm.list, &card->dapm_list);
+
+ return 0;
+
+err_probe:
+ module_put(platform->dev->driver->owner);
+
return ret;
}
rtd = &card->rtd_aux[num];
name = aux_dev->name;
}
+ rtd->card = card;
/* machine controls, routes and widgets are not prefixed */
temp = codec->name_prefix;
/* Make sure all DAPM widgets are instantiated */
snd_soc_dapm_new_widgets(&codec->dapm);
- snd_soc_dapm_sync(&codec->dapm);
/* register the rtd device */
rtd->codec = codec;
- rtd->card = card;
rtd->dev.parent = card->dev;
rtd->dev.release = rtd_release;
rtd->dev.init_name = name;
+ mutex_init(&rtd->pcm_mutex);
ret = device_register(&rtd->dev);
if (ret < 0) {
dev_err(card->dev,
return 0;
}
-static int soc_probe_dai_link(struct snd_soc_card *card, int num)
+static int soc_probe_dai_link(struct snd_soc_card *card, int num, int order)
{
struct snd_soc_dai_link *dai_link = &card->dai_link[num];
struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
int ret;
- dev_dbg(card->dev, "probe %s dai link %d\n", card->name, num);
+ dev_dbg(card->dev, "probe %s dai link %d late %d\n",
+ card->name, num, order);
/* config components */
codec_dai->codec = codec;
rtd->pmdown_time = pmdown_time;
/* probe the cpu_dai */
- if (!cpu_dai->probed) {
+ if (!cpu_dai->probed &&
+ cpu_dai->driver->probe_order == order) {
+ if (!try_module_get(cpu_dai->dev->driver->owner))
+ return -ENODEV;
+
if (cpu_dai->driver->probe) {
ret = cpu_dai->driver->probe(cpu_dai);
if (ret < 0) {
printk(KERN_ERR "asoc: failed to probe CPU DAI %s\n",
cpu_dai->name);
+ module_put(cpu_dai->dev->driver->owner);
return ret;
}
}
cpu_dai->probed = 1;
- /* mark cpu_dai as probed and add to card cpu_dai list */
+ /* mark cpu_dai as probed and add to card dai list */
list_add(&cpu_dai->card_list, &card->dai_dev_list);
}
/* probe the CODEC */
- if (!codec->probed) {
+ if (!codec->probed &&
+ codec->driver->probe_order == order) {
ret = soc_probe_codec(card, codec);
if (ret < 0)
return ret;
}
/* probe the platform */
- if (!platform->probed) {
- if (platform->driver->probe) {
- ret = platform->driver->probe(platform);
- if (ret < 0) {
- printk(KERN_ERR "asoc: failed to probe platform %s\n",
- platform->name);
- return ret;
- }
- }
- /* mark platform as probed and add to card platform list */
-
- if (!try_module_get(platform->dev->driver->owner))
- return -ENODEV;
-
- platform->probed = 1;
- list_add(&platform->card_list, &card->platform_dev_list);
+ if (!platform->probed &&
+ platform->driver->probe_order == order) {
+ ret = soc_probe_platform(card, platform);
+ if (ret < 0)
+ return ret;
}
/* probe the CODEC DAI */
- if (!codec_dai->probed) {
+ if (!codec_dai->probed && codec_dai->driver->probe_order == order) {
if (codec_dai->driver->probe) {
ret = codec_dai->driver->probe(codec_dai);
if (ret < 0) {
}
}
- /* mark cpu_dai as probed and add to card cpu_dai list */
+ /* mark codec_dai as probed and add to card dai list */
codec_dai->probed = 1;
list_add(&codec_dai->card_list, &card->dai_dev_list);
}
- /* DAPM dai link stream work */
- INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);
+ /* complete DAI probe during last probe */
+ if (order != SND_SOC_COMP_ORDER_LAST)
+ return 0;
ret = soc_post_component_init(card, codec, num, 0);
if (ret)
goto out;
found:
- if (!try_module_get(codec->dev->driver->owner))
- return -ENODEV;
-
ret = soc_probe_codec(card, codec);
if (ret < 0)
return ret;
static void snd_soc_instantiate_card(struct snd_soc_card *card)
{
- struct platform_device *pdev = to_platform_device(card->dev);
struct snd_soc_codec *codec;
struct snd_soc_codec_conf *codec_conf;
enum snd_soc_compress_type compress_type;
- int ret, i;
+ int ret, i, order;
mutex_lock(&card->mutex);
}
card->snd_card->dev = card->dev;
-#ifdef CONFIG_PM
+ card->dapm.bias_level = SND_SOC_BIAS_OFF;
+ card->dapm.dev = card->dev;
+ card->dapm.card = card;
+ list_add(&card->dapm.list, &card->dapm_list);
+
+#ifdef CONFIG_DEBUG_FS
+ snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
+#endif
+
+#ifdef CONFIG_PM_SLEEP
/* deferred resume work */
INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
#endif
+ if (card->dapm_widgets)
+ snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
+ card->num_dapm_widgets);
+
/* initialise the sound card only once */
if (card->probe) {
- ret = card->probe(pdev);
+ ret = card->probe(card);
if (ret < 0)
goto card_probe_error;
}
- for (i = 0; i < card->num_links; i++) {
- ret = soc_probe_dai_link(card, i);
- if (ret < 0) {
- pr_err("asoc: failed to instantiate card %s: %d\n",
+ /* early DAI link probe */
+ for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
+ order++) {
+ for (i = 0; i < card->num_links; i++) {
+ ret = soc_probe_dai_link(card, i, order);
+ if (ret < 0) {
+ pr_err("asoc: failed to instantiate card %s: %d\n",
card->name, ret);
- goto probe_dai_err;
+ goto probe_dai_err;
+ }
}
}
}
}
+ /* We should have a non-codec control add function but we don't */
+ if (card->controls)
+ snd_soc_add_controls(list_first_entry(&card->codec_dev_list,
+ struct snd_soc_codec,
+ card_list),
+ card->controls,
+ card->num_controls);
+
+ if (card->dapm_routes)
+ snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
+ card->num_dapm_routes);
+
snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
- "%s", card->name);
- snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
"%s", card->name);
+ snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
+ "%s", card->long_name ? card->long_name : card->name);
+ snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
+ "%s", card->driver_name ? card->driver_name : card->name);
+ for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
+ switch (card->snd_card->driver[i]) {
+ case '_':
+ case '-':
+ case '\0':
+ break;
+ default:
+ if (!isalnum(card->snd_card->driver[i]))
+ card->snd_card->driver[i] = '_';
+ break;
+ }
+ }
+
+ if (card->late_probe) {
+ ret = card->late_probe(card);
+ if (ret < 0) {
+ dev_err(card->dev, "%s late_probe() failed: %d\n",
+ card->name, ret);
+ goto probe_aux_dev_err;
+ }
+ }
ret = snd_card_register(card->snd_card);
if (ret < 0) {
soc_remove_aux_dev(card, i);
probe_dai_err:
- for (i = 0; i < card->num_links; i++)
- soc_remove_dai_link(card, i);
+ soc_remove_dai_links(card);
card_probe_error:
if (card->remove)
- card->remove(pdev);
+ card->remove(card);
snd_card_free(card->snd_card);
struct snd_soc_card *card = platform_get_drvdata(pdev);
int ret = 0;
+ /*
+ * no card, so machine driver should be registering card
+ * we should not be here in that case so ret error
+ */
+ if (!card)
+ return -EINVAL;
+
/* Bodge while we unpick instantiation */
card->dev = &pdev->dev;
- INIT_LIST_HEAD(&card->dai_dev_list);
- INIT_LIST_HEAD(&card->codec_dev_list);
- INIT_LIST_HEAD(&card->platform_dev_list);
- INIT_LIST_HEAD(&card->widgets);
- INIT_LIST_HEAD(&card->paths);
- INIT_LIST_HEAD(&card->dapm_list);
-
- soc_init_card_debugfs(card);
ret = snd_soc_register_card(card);
if (ret != 0) {
return 0;
}
-/* removes a socdev */
-static int soc_remove(struct platform_device *pdev)
+static int soc_cleanup_card_resources(struct snd_soc_card *card)
{
- struct snd_soc_card *card = platform_get_drvdata(pdev);
int i;
- if (card->instantiated) {
+ /* make sure any delayed work runs */
+ for (i = 0; i < card->num_rtd; i++) {
+ struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
+ flush_delayed_work_sync(&rtd->delayed_work);
+ }
- /* make sure any delayed work runs */
- for (i = 0; i < card->num_rtd; i++) {
- struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
- flush_delayed_work_sync(&rtd->delayed_work);
- }
+ /* remove auxiliary devices */
+ for (i = 0; i < card->num_aux_devs; i++)
+ soc_remove_aux_dev(card, i);
- /* remove auxiliary devices */
- for (i = 0; i < card->num_aux_devs; i++)
- soc_remove_aux_dev(card, i);
+ /* remove and free each DAI */
+ soc_remove_dai_links(card);
- /* remove and free each DAI */
- for (i = 0; i < card->num_rtd; i++)
- soc_remove_dai_link(card, i);
+ soc_cleanup_card_debugfs(card);
- soc_cleanup_card_debugfs(card);
+ /* remove the card */
+ if (card->remove)
+ card->remove(card);
- /* remove the card */
- if (card->remove)
- card->remove(pdev);
+ snd_soc_dapm_free(&card->dapm);
- kfree(card->rtd);
- snd_card_free(card->snd_card);
- }
- snd_soc_unregister_card(card);
+ kfree(card->rtd);
+ snd_card_free(card->snd_card);
return 0;
+
}
-static int soc_poweroff(struct device *dev)
+/* removes a socdev */
+static int soc_remove(struct platform_device *pdev)
{
- struct platform_device *pdev = to_platform_device(dev);
struct snd_soc_card *card = platform_get_drvdata(pdev);
+
+ snd_soc_unregister_card(card);
+ return 0;
+}
+
+int snd_soc_poweroff(struct device *dev)
+{
+ struct snd_soc_card *card = dev_get_drvdata(dev);
int i;
if (!card->instantiated)
return 0;
}
+EXPORT_SYMBOL_GPL(snd_soc_poweroff);
-static const struct dev_pm_ops soc_pm_ops = {
- .suspend = soc_suspend,
- .resume = soc_resume,
- .poweroff = soc_poweroff,
+const struct dev_pm_ops snd_soc_pm_ops = {
+ .suspend = snd_soc_suspend,
+ .resume = snd_soc_resume,
+ .poweroff = snd_soc_poweroff,
};
+EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
/* ASoC platform driver */
static struct platform_driver soc_driver = {
.driver = {
.name = "soc-audio",
.owner = THIS_MODULE,
- .pm = &soc_pm_ops,
+ .pm = &snd_soc_pm_ops,
},
.probe = soc_probe,
.remove = soc_remove,
};
-/* create a new pcm */
-static int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
-{
- struct snd_soc_codec *codec = rtd->codec;
- struct snd_soc_platform *platform = rtd->platform;
- struct snd_soc_dai *codec_dai = rtd->codec_dai;
- struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
- struct snd_pcm *pcm;
- char new_name[64];
- int ret = 0, playback = 0, capture = 0;
-
- /* check client and interface hw capabilities */
- snprintf(new_name, sizeof(new_name), "%s %s-%d",
- rtd->dai_link->stream_name, codec_dai->name, num);
-
- if (codec_dai->driver->playback.channels_min)
- playback = 1;
- if (codec_dai->driver->capture.channels_min)
- capture = 1;
-
- dev_dbg(rtd->card->dev, "registered pcm #%d %s\n",num,new_name);
- ret = snd_pcm_new(rtd->card->snd_card, new_name,
- num, playback, capture, &pcm);
- if (ret < 0) {
- printk(KERN_ERR "asoc: can't create pcm for codec %s\n", codec->name);
- return ret;
- }
-
- rtd->pcm = pcm;
- pcm->private_data = rtd;
- soc_pcm_ops.mmap = platform->driver->ops->mmap;
- soc_pcm_ops.pointer = platform->driver->ops->pointer;
- soc_pcm_ops.ioctl = platform->driver->ops->ioctl;
- soc_pcm_ops.copy = platform->driver->ops->copy;
- soc_pcm_ops.silence = platform->driver->ops->silence;
- soc_pcm_ops.ack = platform->driver->ops->ack;
- soc_pcm_ops.page = platform->driver->ops->page;
-
- if (playback)
- snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops);
-
- if (capture)
- snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops);
-
- ret = platform->driver->pcm_new(rtd->card->snd_card, codec_dai, pcm);
- if (ret < 0) {
- printk(KERN_ERR "asoc: platform pcm constructor failed\n");
- return ret;
- }
-
- pcm->private_free = platform->driver->pcm_free;
- printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name,
- cpu_dai->name);
- return ret;
-}
-
/**
* snd_soc_codec_volatile_register: Report if a register is volatile.
*
*
* Boolean function indiciating if a CODEC register is volatile.
*/
-int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, int reg)
+int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
+ unsigned int reg)
{
- if (codec->driver->volatile_register)
- return codec->driver->volatile_register(codec, reg);
+ if (codec->volatile_register)
+ return codec->volatile_register(codec, reg);
else
return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
+/**
+ * snd_soc_codec_readable_register: Report if a register is readable.
+ *
+ * @codec: CODEC to query.
+ * @reg: Register to query.
+ *
+ * Boolean function indicating if a CODEC register is readable.
+ */
+int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
+ unsigned int reg)
+{
+ if (codec->readable_register)
+ return codec->readable_register(codec, reg);
+ else
+ return 1;
+}
+EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register);
+
+/**
+ * snd_soc_codec_writable_register: Report if a register is writable.
+ *
+ * @codec: CODEC to query.
+ * @reg: Register to query.
+ *
+ * Boolean function indicating if a CODEC register is writable.
+ */
+int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
+ unsigned int reg)
+{
+ if (codec->writable_register)
+ return codec->writable_register(codec, reg);
+ else
+ return 1;
+}
+EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register);
+
+int snd_soc_platform_read(struct snd_soc_platform *platform,
+ unsigned int reg)
+{
+ unsigned int ret;
+
+ if (!platform->driver->read) {
+ dev_err(platform->dev, "platform has no read back\n");
+ return -1;
+ }
+
+ ret = platform->driver->read(platform, reg);
+ dev_dbg(platform->dev, "read %x => %x\n", reg, ret);
+ trace_snd_soc_preg_read(platform, reg, ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(snd_soc_platform_read);
+
+int snd_soc_platform_write(struct snd_soc_platform *platform,
+ unsigned int reg, unsigned int val)
+{
+ if (!platform->driver->write) {
+ dev_err(platform->dev, "platform has no write back\n");
+ return -1;
+ }
+
+ dev_dbg(platform->dev, "write %x = %x\n", reg, val);
+ trace_snd_soc_preg_write(platform, reg, val);
+ return platform->driver->write(platform, reg, val);
+}
+EXPORT_SYMBOL_GPL(snd_soc_platform_write);
+
/**
* snd_soc_new_ac97_codec - initailise AC97 device
* @codec: audio codec
}
EXPORT_SYMBOL_GPL(snd_soc_write);
+unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec,
+ unsigned int reg, const void *data, size_t len)
+{
+ return codec->bulk_write_raw(codec, reg, data, len);
+}
+EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw);
+
/**
* snd_soc_update_bits - update codec register bits
* @codec: audio codec
return ret;
old = ret;
- new = (old & ~mask) | value;
+ new = (old & ~mask) | (value & mask);
change = old != new;
if (change) {
ret = snd_soc_write(codec, reg, new);
* @_template: control template
* @data: control private data
* @long_name: control long name
+ * @prefix: control name prefix
*
* Create a new mixer control from a template control.
*
* Returns 0 for success, else error.
*/
struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
- void *data, char *long_name)
+ void *data, char *long_name,
+ const char *prefix)
{
struct snd_kcontrol_new template;
+ struct snd_kcontrol *kcontrol;
+ char *name = NULL;
+ int name_len;
memcpy(&template, _template, sizeof(template));
- if (long_name)
- template.name = long_name;
template.index = 0;
- return snd_ctl_new1(&template, data);
+ if (!long_name)
+ long_name = template.name;
+
+ if (prefix) {
+ name_len = strlen(long_name) + strlen(prefix) + 2;
+ name = kmalloc(name_len, GFP_KERNEL);
+ if (!name)
+ return NULL;
+
+ snprintf(name, name_len, "%s %s", prefix, long_name);
+
+ template.name = name;
+ } else {
+ template.name = long_name;
+ }
+
+ kcontrol = snd_ctl_new1(&template, data);
+
+ kfree(name);
+
+ return kcontrol;
}
EXPORT_SYMBOL_GPL(snd_soc_cnew);
const struct snd_kcontrol_new *controls, int num_controls)
{
struct snd_card *card = codec->card->snd_card;
- char prefixed_name[44], *name;
int err, i;
for (i = 0; i < num_controls; i++) {
const struct snd_kcontrol_new *control = &controls[i];
- if (codec->name_prefix) {
- snprintf(prefixed_name, sizeof(prefixed_name), "%s %s",
- codec->name_prefix, control->name);
- name = prefixed_name;
- } else {
- name = control->name;
- }
- err = snd_ctl_add(card, snd_soc_cnew(control, codec, name));
+ err = snd_ctl_add(card, snd_soc_cnew(control, codec,
+ control->name,
+ codec->name_prefix));
if (err < 0) {
dev_err(codec->dev, "%s: Failed to add %s: %d\n",
- codec->name, name, err);
+ codec->name, control->name, err);
return err;
}
}
}
EXPORT_SYMBOL_GPL(snd_soc_add_controls);
+/**
+ * snd_soc_add_platform_controls - add an array of controls to a platform.
+ * Convienience function to add a list of controls.
+ *
+ * @platform: platform to add controls to
+ * @controls: array of controls to add
+ * @num_controls: number of elements in the array
+ *
+ * Return 0 for success, else error.
+ */
+int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
+ const struct snd_kcontrol_new *controls, int num_controls)
+{
+ struct snd_card *card = platform->card->snd_card;
+ int err, i;
+
+ for (i = 0; i < num_controls; i++) {
+ const struct snd_kcontrol_new *control = &controls[i];
+ err = snd_ctl_add(card, snd_soc_cnew(control, platform,
+ control->name, NULL));
+ if (err < 0) {
+ dev_err(platform->dev, "Failed to add %s %d\n",control->name, err);
+ return err;
+ }
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
+
/**
* snd_soc_info_enum_double - enumerated double mixer info callback
* @kcontrol: mixer control
{
if (dai->driver && dai->driver->ops->set_sysclk)
return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
+ else if (dai->codec && dai->codec->driver->set_sysclk)
+ return dai->codec->driver->set_sysclk(dai->codec, clk_id,
+ freq, dir);
else
return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
+/**
+ * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
+ * @codec: CODEC
+ * @clk_id: DAI specific clock ID
+ * @freq: new clock frequency in Hz
+ * @dir: new clock direction - input/output.
+ *
+ * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
+ */
+int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
+ unsigned int freq, int dir)
+{
+ if (codec->driver->set_sysclk)
+ return codec->driver->set_sysclk(codec, clk_id, freq, dir);
+ else
+ return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
+
/**
* snd_soc_dai_set_clkdiv - configure DAI clock dividers.
* @dai: DAI
if (dai->driver && dai->driver->ops->set_pll)
return dai->driver->ops->set_pll(dai, pll_id, source,
freq_in, freq_out);
+ else if (dai->codec && dai->codec->driver->set_pll)
+ return dai->codec->driver->set_pll(dai->codec, pll_id, source,
+ freq_in, freq_out);
else
return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
+/*
+ * snd_soc_codec_set_pll - configure codec PLL.
+ * @codec: CODEC
+ * @pll_id: DAI specific PLL ID
+ * @source: DAI specific source for the PLL
+ * @freq_in: PLL input clock frequency in Hz
+ * @freq_out: requested PLL output clock frequency in Hz
+ *
+ * Configures and enables PLL to generate output clock based on input clock.
+ */
+int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
+ unsigned int freq_in, unsigned int freq_out)
+{
+ if (codec->driver->set_pll)
+ return codec->driver->set_pll(codec, pll_id, source,
+ freq_in, freq_out);
+ else
+ return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
+
/**
* snd_soc_dai_set_fmt - configure DAI hardware audio format.
* @dai: DAI
*
* @card: Card to register
*
- * Note that currently this is an internal only function: it will be
- * exposed to machine drivers after further backporting of ASoC v2
- * registration APIs.
*/
-static int snd_soc_register_card(struct snd_soc_card *card)
+int snd_soc_register_card(struct snd_soc_card *card)
{
int i;
if (!card->name || !card->dev)
return -EINVAL;
+ dev_set_drvdata(card->dev, card);
+
+ snd_soc_initialize_card_lists(card);
+
+ soc_init_card_debugfs(card);
+
card->rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime) *
(card->num_links + card->num_aux_devs),
GFP_KERNEL);
return 0;
}
+EXPORT_SYMBOL_GPL(snd_soc_register_card);
/**
* snd_soc_unregister_card - Unregister a card with the ASoC core
*
* @card: Card to unregister
*
- * Note that currently this is an internal only function: it will be
- * exposed to machine drivers after further backporting of ASoC v2
- * registration APIs.
*/
-static int snd_soc_unregister_card(struct snd_soc_card *card)
+int snd_soc_unregister_card(struct snd_soc_card *card)
{
+ if (card->instantiated)
+ soc_cleanup_card_resources(card);
mutex_lock(&client_mutex);
list_del(&card->list);
mutex_unlock(&client_mutex);
return 0;
}
+EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
/*
* Simplify DAI link configuration by removing ".-1" from device names
dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
if (dai == NULL)
- return -ENOMEM;
+ return -ENOMEM;
/* create DAI component name */
dai->name = fmt_single_name(dev, &dai->id);
platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
if (platform == NULL)
- return -ENOMEM;
+ return -ENOMEM;
/* create platform component name */
platform->name = fmt_single_name(dev, &platform->id);
platform->dev = dev;
platform->driver = platform_drv;
+ platform->dapm.dev = dev;
+ platform->dapm.platform = platform;
mutex_lock(&client_mutex);
list_add(&platform->list, &platform_list);
codec->write = codec_drv->write;
codec->read = codec_drv->read;
+ codec->volatile_register = codec_drv->volatile_register;
+ codec->readable_register = codec_drv->readable_register;
+ codec->writable_register = codec_drv->writable_register;
codec->dapm.bias_level = SND_SOC_BIAS_OFF;
codec->dapm.dev = dev;
codec->dapm.codec = codec;
+ codec->dapm.seq_notifier = codec_drv->seq_notifier;
codec->dev = dev;
codec->driver = codec_drv;
codec->num_dai = num_dai;
}
}
+ if (codec_drv->reg_access_size && codec_drv->reg_access_default) {
+ if (!codec->volatile_register)
+ codec->volatile_register = snd_soc_default_volatile_register;
+ if (!codec->readable_register)
+ codec->readable_register = snd_soc_default_readable_register;
+ if (!codec->writable_register)
+ codec->writable_register = snd_soc_default_writable_register;
+ }
+
for (i = 0; i < num_dai; i++) {
fixup_codec_formats(&dai_drv[i].playback);
fixup_codec_formats(&dai_drv[i].capture);
pr_warn("ASoC: Failed to create platform list debugfs file\n");
#endif
+ snd_soc_util_init();
+
return platform_driver_register(&soc_driver);
}
module_init(snd_soc_init);
static void __exit snd_soc_exit(void)
{
+ snd_soc_util_exit();
+
#ifdef CONFIG_DEBUG_FS
debugfs_remove_recursive(snd_soc_debugfs_root);
#endif
Code Review / linux-2.6.git / blobdiff