#include <linux/bitops.h>
#include <linux/debugfs.h>
#include <linux/platform_device.h>
+#include <linux/slab.h>
#include <sound/ac97_codec.h>
#include <sound/core.h>
#include <sound/pcm.h>
return ret;
}
+/* codec register dump */
+static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf)
+{
+ int i, step = 1, count = 0;
+
+ if (!codec->reg_cache_size)
+ return 0;
+
+ if (codec->reg_cache_step)
+ step = codec->reg_cache_step;
+
+ count += sprintf(buf, "%s registers\n", codec->name);
+ for (i = 0; i < codec->reg_cache_size; i += step) {
+ if (codec->readable_register && !codec->readable_register(i))
+ continue;
+
+ count += sprintf(buf + count, "%2x: ", i);
+ if (count >= PAGE_SIZE - 1)
+ break;
+
+ if (codec->display_register)
+ count += codec->display_register(codec, buf + count,
+ PAGE_SIZE - count, i);
+ else
+ count += snprintf(buf + count, PAGE_SIZE - count,
+ "%4x", codec->read(codec, i));
+
+ 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;
+
+ return count;
+}
+static ssize_t codec_reg_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct snd_soc_device *devdata = dev_get_drvdata(dev);
+ return soc_codec_reg_show(devdata->card->codec, buf);
+}
+
+static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
+
+static ssize_t pmdown_time_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct snd_soc_device *socdev = dev_get_drvdata(dev);
+ struct snd_soc_card *card = socdev->card;
+
+ return sprintf(buf, "%ld\n", card->pmdown_time);
+}
+
+static ssize_t pmdown_time_set(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct snd_soc_device *socdev = dev_get_drvdata(dev);
+ struct snd_soc_card *card = socdev->card;
+
+ strict_strtol(buf, 10, &card->pmdown_time);
+
+ return count;
+}
+
+static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
+
+#ifdef CONFIG_DEBUG_FS
+static int codec_reg_open_file(struct inode *inode, struct file *file)
+{
+ file->private_data = inode->i_private;
+ return 0;
+}
+
+static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ ssize_t ret;
+ struct snd_soc_codec *codec = file->private_data;
+ char *buf = kmalloc(PAGE_SIZE, 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);
+ kfree(buf);
+ return ret;
+}
+
+static ssize_t codec_reg_write_file(struct file *file,
+ const char __user *user_buf, size_t count, loff_t *ppos)
+{
+ char buf[32];
+ int buf_size;
+ char *start = buf;
+ unsigned long reg, value;
+ int step = 1;
+ struct snd_soc_codec *codec = file->private_data;
+
+ buf_size = min(count, (sizeof(buf)-1));
+ if (copy_from_user(buf, user_buf, buf_size))
+ return -EFAULT;
+ buf[buf_size] = 0;
+
+ if (codec->reg_cache_step)
+ step = codec->reg_cache_step;
+
+ while (*start == ' ')
+ start++;
+ reg = simple_strtoul(start, &start, 16);
+ if ((reg >= codec->reg_cache_size) || (reg % step))
+ return -EINVAL;
+ while (*start == ' ')
+ start++;
+ if (strict_strtoul(start, 16, &value))
+ return -EINVAL;
+ codec->write(codec, reg, value);
+ return buf_size;
+}
+
+static const struct file_operations codec_reg_fops = {
+ .open = codec_reg_open_file,
+ .read = codec_reg_read_file,
+ .write = codec_reg_write_file,
+};
+
+static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
+{
+ char codec_root[128];
+
+ if (codec->dev)
+ snprintf(codec_root, sizeof(codec_root),
+ "%s.%s", codec->name, dev_name(codec->dev));
+ else
+ snprintf(codec_root, sizeof(codec_root),
+ "%s", codec->name);
+
+ codec->debugfs_codec_root = debugfs_create_dir(codec_root,
+ debugfs_root);
+ if (!codec->debugfs_codec_root) {
+ printk(KERN_WARNING
+ "ASoC: Failed to create codec debugfs directory\n");
+ return;
+ }
+
+ codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
+ codec->debugfs_codec_root,
+ codec, &codec_reg_fops);
+ if (!codec->debugfs_reg)
+ printk(KERN_WARNING
+ "ASoC: Failed to create codec register debugfs file\n");
+
+ codec->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0744,
+ codec->debugfs_codec_root,
+ &codec->pop_time);
+ if (!codec->debugfs_pop_time)
+ printk(KERN_WARNING
+ "Failed to create pop time debugfs file\n");
+
+ codec->debugfs_dapm = debugfs_create_dir("dapm",
+ codec->debugfs_codec_root);
+ if (!codec->debugfs_dapm)
+ printk(KERN_WARNING
+ "Failed to create DAPM debugfs directory\n");
+
+ snd_soc_dapm_debugfs_init(codec);
+}
+
+static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
+{
+ debugfs_remove_recursive(codec->debugfs_codec_root);
+}
+
+#else
+
+static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec)
+{
+}
+
+static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
+{
+}
+#endif
+
#ifdef CONFIG_SND_SOC_AC97_BUS
/* unregister ac97 codec */
static int soc_ac97_dev_unregister(struct snd_soc_codec *codec)
if (codec_dai->symmetric_rates || cpu_dai->symmetric_rates ||
machine->symmetric_rates) {
- dev_dbg(card->dev, "Symmetry forces %dHz rate\n",
+ dev_dbg(card->dev, "Symmetry forces %dHz rate\n",
machine->rate);
ret = snd_pcm_hw_constraint_minmax(substream->runtime,
codec_dai->playback.formats & cpu_dai->playback.formats;
runtime->hw.rates =
codec_dai->playback.rates & cpu_dai->playback.rates;
+ if (codec_dai->playback.rates
+ & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
+ runtime->hw.rates |= cpu_dai->playback.rates;
+ if (cpu_dai->playback.rates
+ & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
+ runtime->hw.rates |= codec_dai->playback.rates;
} else {
runtime->hw.rate_min =
max(codec_dai->capture.rate_min,
codec_dai->capture.formats & cpu_dai->capture.formats;
runtime->hw.rates =
codec_dai->capture.rates & cpu_dai->capture.rates;
+ if (codec_dai->capture.rates
+ & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
+ runtime->hw.rates |= cpu_dai->capture.rates;
+ if (cpu_dai->capture.rates
+ & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
+ runtime->hw.rates |= codec_dai->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 machine_err;
+ goto config_err;
}
if (!runtime->hw.formats) {
printk(KERN_ERR "asoc: %s <-> %s No matching formats\n",
codec_dai->name, cpu_dai->name);
- goto machine_err;
+ 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 machine_err;
+ 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 machine_err;
+ goto config_err;
}
pr_debug("asoc: %s <-> %s info:\n", codec_dai->name, cpu_dai->name);
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 = 1;
- else
- cpu_dai->capture.active = codec_dai->capture.active = 1;
- cpu_dai->active = codec_dai->active = 1;
- cpu_dai->runtime = runtime;
+ 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++;
card->codec->active++;
mutex_unlock(&pcm_mutex);
return 0;
-machine_err:
+config_err:
if (machine->ops && machine->ops->shutdown)
machine->ops->shutdown(substream);
+machine_err:
+ if (codec_dai->ops->shutdown)
+ codec_dai->ops->shutdown(substream, codec_dai);
+
codec_dai_err:
if (platform->pcm_ops->close)
platform->pcm_ops->close(substream);
mutex_lock(&pcm_mutex);
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- cpu_dai->playback.active = codec_dai->playback.active = 0;
- else
- cpu_dai->capture.active = codec_dai->capture.active = 0;
-
- if (codec_dai->playback.active == 0 &&
- codec_dai->capture.active == 0) {
- cpu_dai->active = codec_dai->active = 0;
+ 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
if (platform->pcm_ops->close)
platform->pcm_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(&card->delayed_work,
- msecs_to_jiffies(pmdown_time));
+ msecs_to_jiffies(card->pmdown_time));
} else {
/* capture streams can be powered down now */
snd_soc_dapm_stream_event(codec,
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_device *socdev = rtd->socdev;
+ struct snd_soc_card *card = socdev->card;
+ struct snd_soc_platform *platform = card->platform;
+ struct snd_soc_dai_link *machine = rtd->dai;
+ struct snd_soc_dai *cpu_dai = machine->cpu_dai;
+ struct snd_soc_dai *codec_dai = machine->codec_dai;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ snd_pcm_uframes_t offset = 0;
+ snd_pcm_sframes_t delay = 0;
+
+ if (platform->pcm_ops->pointer)
+ offset = platform->pcm_ops->pointer(substream);
+
+ if (cpu_dai->ops->delay)
+ delay += cpu_dai->ops->delay(substream, cpu_dai);
+
+ if (codec_dai->ops->delay)
+ delay += codec_dai->ops->delay(substream, codec_dai);
+
+ if (platform->delay)
+ delay += platform->delay(substream, codec_dai);
+
+ runtime->delay = delay;
+
+ return offset;
+}
+
/* ASoC PCM operations */
static struct snd_pcm_ops soc_pcm_ops = {
.open = soc_pcm_open,
.hw_free = soc_pcm_hw_free,
.prepare = soc_pcm_prepare,
.trigger = soc_pcm_trigger,
+ .pointer = soc_pcm_pointer,
};
#ifdef CONFIG_PM
/* mute any active DAC's */
for (i = 0; i < card->num_links; i++) {
struct snd_soc_dai *dai = card->dai_link[i].codec_dai;
+
+ if (card->dai_link[i].ignore_suspend)
+ continue;
+
if (dai->ops->digital_mute && dai->playback.active)
dai->ops->digital_mute(dai, 1);
}
/* suspend all pcms */
- for (i = 0; i < card->num_links; i++)
+ for (i = 0; i < card->num_links; i++) {
+ if (card->dai_link[i].ignore_suspend)
+ continue;
+
snd_pcm_suspend_all(card->dai_link[i].pcm);
+ }
if (card->suspend_pre)
card->suspend_pre(pdev, PMSG_SUSPEND);
for (i = 0; i < card->num_links; i++) {
struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai;
+
+ if (card->dai_link[i].ignore_suspend)
+ continue;
+
if (cpu_dai->suspend && !cpu_dai->ac97_control)
cpu_dai->suspend(cpu_dai);
if (platform->suspend)
- platform->suspend(cpu_dai);
+ platform->suspend(&card->dai_link[i]);
}
/* close any waiting streams and save state */
for (i = 0; i < codec->num_dai; i++) {
char *stream = codec->dai[i].playback.stream_name;
+
+ if (card->dai_link[i].ignore_suspend)
+ continue;
+
if (stream != NULL)
snd_soc_dapm_stream_event(codec, stream,
SND_SOC_DAPM_STREAM_SUSPEND);
SND_SOC_DAPM_STREAM_SUSPEND);
}
- if (codec_dev->suspend)
- codec_dev->suspend(pdev, PMSG_SUSPEND);
+ /* If there are paths active then the CODEC will be held with
+ * bias _ON and should not be suspended. */
+ if (codec_dev->suspend) {
+ switch (codec->bias_level) {
+ case SND_SOC_BIAS_STANDBY:
+ case SND_SOC_BIAS_OFF:
+ codec_dev->suspend(pdev, PMSG_SUSPEND);
+ break;
+ default:
+ dev_dbg(socdev->dev, "CODEC is on over suspend\n");
+ break;
+ }
+ }
for (i = 0; i < card->num_links; i++) {
struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai;
+
+ if (card->dai_link[i].ignore_suspend)
+ continue;
+
if (cpu_dai->suspend && cpu_dai->ac97_control)
cpu_dai->suspend(cpu_dai);
}
dev_dbg(socdev->dev, "starting resume work\n");
+ /* Bring us up into D2 so that DAPM starts enabling things */
+ snd_power_change_state(codec->card, SNDRV_CTL_POWER_D2);
+
if (card->resume_pre)
card->resume_pre(pdev);
for (i = 0; i < card->num_links; i++) {
struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai;
+
+ if (card->dai_link[i].ignore_suspend)
+ continue;
+
if (cpu_dai->resume && cpu_dai->ac97_control)
cpu_dai->resume(cpu_dai);
}
- if (codec_dev->resume)
- codec_dev->resume(pdev);
+ /* If the CODEC was idle over suspend then it will have been
+ * left with bias OFF or STANDBY and suspended so we must now
+ * resume. Otherwise the suspend was suppressed.
+ */
+ if (codec_dev->resume) {
+ switch (codec->bias_level) {
+ case SND_SOC_BIAS_STANDBY:
+ case SND_SOC_BIAS_OFF:
+ codec_dev->resume(pdev);
+ break;
+ default:
+ dev_dbg(socdev->dev, "CODEC was on over suspend\n");
+ break;
+ }
+ }
for (i = 0; i < codec->num_dai; i++) {
char *stream = codec->dai[i].playback.stream_name;
+
+ if (card->dai_link[i].ignore_suspend)
+ continue;
+
if (stream != NULL)
snd_soc_dapm_stream_event(codec, stream,
SND_SOC_DAPM_STREAM_RESUME);
/* unmute any active DACs */
for (i = 0; i < card->num_links; i++) {
struct snd_soc_dai *dai = card->dai_link[i].codec_dai;
+
+ if (card->dai_link[i].ignore_suspend)
+ continue;
+
if (dai->ops->digital_mute && dai->playback.active)
dai->ops->digital_mute(dai, 0);
}
for (i = 0; i < card->num_links; i++) {
struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai;
+
+ if (card->dai_link[i].ignore_suspend)
+ continue;
+
if (cpu_dai->resume && !cpu_dai->ac97_control)
cpu_dai->resume(cpu_dai);
if (platform->resume)
- platform->resume(cpu_dai);
+ platform->resume(&card->dai_link[i]);
}
if (card->resume_post)
struct snd_soc_card *card = socdev->card;
struct snd_soc_dai *cpu_dai = card->dai_link[0].cpu_dai;
- /* AC97 devices might have other drivers hanging off them so
- * need to resume immediately. Other drivers don't have that
+ /* If the initialization of this soc device failed, there is no codec
+ * associated with it. Just bail out in this case.
+ */
+ if (!card->codec)
+ return 0;
+
+ /* AC97 devices might have other drivers hanging off them so
+ * need to resume immediately. Other drivers don't have that
* problem and may take a substantial amount of time to resume
* due to I/O costs and anti-pop so handle them out of line.
*/
struct platform_device,
dev);
struct snd_soc_codec_device *codec_dev = card->socdev->codec_dev;
+ struct snd_soc_codec *codec;
struct snd_soc_platform *platform;
struct snd_soc_dai *dai;
int i, found, ret, ac97;
dev_dbg(card->dev, "All components present, instantiating\n");
/* Found everything, bring it up */
+ card->pmdown_time = pmdown_time;
+
if (card->probe) {
ret = card->probe(pdev);
if (ret < 0)
if (ret < 0)
goto cpu_dai_err;
}
+ codec = card->codec;
if (platform->probe) {
ret = platform->probe(pdev);
INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
#endif
+ for (i = 0; i < card->num_links; i++) {
+ if (card->dai_link[i].init) {
+ ret = card->dai_link[i].init(codec);
+ if (ret < 0) {
+ printk(KERN_ERR "asoc: failed to init %s\n",
+ card->dai_link[i].stream_name);
+ continue;
+ }
+ }
+ if (card->dai_link[i].codec_dai->ac97_control)
+ ac97 = 1;
+ }
+
+ snprintf(codec->card->shortname, sizeof(codec->card->shortname),
+ "%s", card->name);
+ snprintf(codec->card->longname, sizeof(codec->card->longname),
+ "%s (%s)", card->name, codec->name);
+
+ /* Make sure all DAPM widgets are instantiated */
+ snd_soc_dapm_new_widgets(codec);
+
+ ret = snd_card_register(codec->card);
+ if (ret < 0) {
+ printk(KERN_ERR "asoc: failed to register soundcard for %s\n",
+ codec->name);
+ goto card_err;
+ }
+
+ mutex_lock(&codec->mutex);
+#ifdef CONFIG_SND_SOC_AC97_BUS
+ /* Only instantiate AC97 if not already done by the adaptor
+ * for the generic AC97 subsystem.
+ */
+ if (ac97 && strcmp(codec->name, "AC97") != 0) {
+ ret = soc_ac97_dev_register(codec);
+ if (ret < 0) {
+ printk(KERN_ERR "asoc: AC97 device register failed\n");
+ snd_card_free(codec->card);
+ mutex_unlock(&codec->mutex);
+ goto card_err;
+ }
+ }
+#endif
+
+ ret = snd_soc_dapm_sys_add(card->socdev->dev);
+ if (ret < 0)
+ printk(KERN_WARNING "asoc: failed to add dapm sysfs entries\n");
+
+ ret = device_create_file(card->socdev->dev, &dev_attr_pmdown_time);
+ if (ret < 0)
+ printk(KERN_WARNING "asoc: failed to add pmdown_time sysfs\n");
+
+ ret = device_create_file(card->socdev->dev, &dev_attr_codec_reg);
+ if (ret < 0)
+ printk(KERN_WARNING "asoc: failed to add codec sysfs files\n");
+
+ soc_init_codec_debugfs(codec);
+ mutex_unlock(&codec->mutex);
+
card->instantiated = 1;
return;
+card_err:
+ if (platform->remove)
+ platform->remove(pdev);
+
platform_err:
if (codec_dev->remove)
codec_dev->remove(pdev);
struct snd_soc_platform *platform = card->platform;
struct snd_soc_codec_device *codec_dev = socdev->codec_dev;
- if (!card->instantiated)
- return 0;
+ if (card->instantiated) {
+ run_delayed_work(&card->delayed_work);
- run_delayed_work(&card->delayed_work);
+ if (platform->remove)
+ platform->remove(pdev);
- if (platform->remove)
- platform->remove(pdev);
+ if (codec_dev->remove)
+ codec_dev->remove(pdev);
- if (codec_dev->remove)
- codec_dev->remove(pdev);
+ for (i = 0; i < card->num_links; i++) {
+ struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai;
+ if (cpu_dai->remove)
+ cpu_dai->remove(pdev, cpu_dai);
+ }
- for (i = 0; i < card->num_links; i++) {
- struct snd_soc_dai *cpu_dai = card->dai_link[i].cpu_dai;
- if (cpu_dai->remove)
- cpu_dai->remove(pdev, cpu_dai);
+ if (card->remove)
+ card->remove(pdev);
}
- if (card->remove)
- card->remove(pdev);
-
snd_soc_unregister_card(card);
return 0;
static int soc_poweroff(struct device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct snd_soc_device *socdev = platform_get_drvdata(pdev);
- struct snd_soc_card *card = socdev->card;
-
- if (!card->instantiated)
- return 0;
-
- /* Flush out pmdown_time work - we actually do want to run it
- * now, we're shutting down so no imminent restart. */
- run_delayed_work(&card->delayed_work);
-
- snd_soc_dapm_shutdown(socdev);
-
- return 0;
-}
-
-static struct dev_pm_ops soc_pm_ops = {
- .suspend = soc_suspend,
- .resume = soc_resume,
- .poweroff = soc_poweroff,
-};
-
-/* ASoC platform driver */
-static struct platform_driver soc_driver = {
- .driver = {
- .name = "soc-audio",
- .owner = THIS_MODULE,
- .pm = &soc_pm_ops,
- },
- .probe = soc_probe,
- .remove = soc_remove,
-};
-
-/* create a new pcm */
-static int soc_new_pcm(struct snd_soc_device *socdev,
- struct snd_soc_dai_link *dai_link, int num)
-{
- struct snd_soc_card *card = socdev->card;
- struct snd_soc_codec *codec = card->codec;
- struct snd_soc_platform *platform = card->platform;
- struct snd_soc_dai *codec_dai = dai_link->codec_dai;
- struct snd_soc_dai *cpu_dai = dai_link->cpu_dai;
- struct snd_soc_pcm_runtime *rtd;
- struct snd_pcm *pcm;
- char new_name[64];
- int ret = 0, playback = 0, capture = 0;
-
- rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL);
- if (rtd == NULL)
- return -ENOMEM;
-
- rtd->dai = dai_link;
- rtd->socdev = socdev;
- codec_dai->codec = card->codec;
-
- /* check client and interface hw capabilities */
- sprintf(new_name, "%s %s-%d", dai_link->stream_name, codec_dai->name,
- num);
-
- if (codec_dai->playback.channels_min)
- playback = 1;
- if (codec_dai->capture.channels_min)
- capture = 1;
-
- ret = snd_pcm_new(codec->card, new_name, codec->pcm_devs++, playback,
- capture, &pcm);
- if (ret < 0) {
- printk(KERN_ERR "asoc: can't create pcm for codec %s\n",
- codec->name);
- kfree(rtd);
- return ret;
- }
-
- dai_link->pcm = pcm;
- pcm->private_data = rtd;
- soc_pcm_ops.mmap = platform->pcm_ops->mmap;
- soc_pcm_ops.pointer = platform->pcm_ops->pointer;
- soc_pcm_ops.ioctl = platform->pcm_ops->ioctl;
- soc_pcm_ops.copy = platform->pcm_ops->copy;
- soc_pcm_ops.silence = platform->pcm_ops->silence;
- soc_pcm_ops.ack = platform->pcm_ops->ack;
- soc_pcm_ops.page = platform->pcm_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->pcm_new(codec->card, codec_dai, pcm);
- if (ret < 0) {
- printk(KERN_ERR "asoc: platform pcm constructor failed\n");
- kfree(rtd);
- return ret;
- }
-
- pcm->private_free = platform->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.
- *
- * @codec: CODEC to query.
- * @reg: Register to query.
- *
- * Boolean function indiciating if a CODEC register is volatile.
- */
-int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, int reg)
-{
- if (codec->volatile_register)
- return codec->volatile_register(reg);
- else
- return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
-
-/* codec register dump */
-static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf)
-{
- int i, step = 1, count = 0;
-
- if (!codec->reg_cache_size)
- return 0;
-
- if (codec->reg_cache_step)
- step = codec->reg_cache_step;
-
- count += sprintf(buf, "%s registers\n", codec->name);
- for (i = 0; i < codec->reg_cache_size; i += step) {
- if (codec->readable_register && !codec->readable_register(i))
- continue;
-
- count += sprintf(buf + count, "%2x: ", i);
- if (count >= PAGE_SIZE - 1)
- break;
-
- if (codec->display_register)
- count += codec->display_register(codec, buf + count,
- PAGE_SIZE - count, i);
- else
- count += snprintf(buf + count, PAGE_SIZE - count,
- "%4x", codec->read(codec, i));
-
- 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;
-
- return count;
-}
-static ssize_t codec_reg_show(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct snd_soc_device *devdata = dev_get_drvdata(dev);
- return soc_codec_reg_show(devdata->card->codec, buf);
-}
-
-static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
-
-#ifdef CONFIG_DEBUG_FS
-static int codec_reg_open_file(struct inode *inode, struct file *file)
-{
- file->private_data = inode->i_private;
- return 0;
-}
-
-static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
- size_t count, loff_t *ppos)
-{
- ssize_t ret;
- struct snd_soc_codec *codec = file->private_data;
- char *buf = kmalloc(PAGE_SIZE, 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);
- kfree(buf);
- return ret;
-}
-
-static ssize_t codec_reg_write_file(struct file *file,
- const char __user *user_buf, size_t count, loff_t *ppos)
-{
- char buf[32];
- int buf_size;
- char *start = buf;
- unsigned long reg, value;
- int step = 1;
- struct snd_soc_codec *codec = file->private_data;
+ struct platform_device *pdev = to_platform_device(dev);
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_card *card = socdev->card;
- buf_size = min(count, (sizeof(buf)-1));
- if (copy_from_user(buf, user_buf, buf_size))
- return -EFAULT;
- buf[buf_size] = 0;
+ if (!card->instantiated)
+ return 0;
- if (codec->reg_cache_step)
- step = codec->reg_cache_step;
+ /* Flush out pmdown_time work - we actually do want to run it
+ * now, we're shutting down so no imminent restart. */
+ run_delayed_work(&card->delayed_work);
- while (*start == ' ')
- start++;
- reg = simple_strtoul(start, &start, 16);
- if ((reg >= codec->reg_cache_size) || (reg % step))
- return -EINVAL;
- while (*start == ' ')
- start++;
- if (strict_strtoul(start, 16, &value))
- return -EINVAL;
- codec->write(codec, reg, value);
- return buf_size;
+ snd_soc_dapm_shutdown(socdev);
+
+ return 0;
}
-static const struct file_operations codec_reg_fops = {
- .open = codec_reg_open_file,
- .read = codec_reg_read_file,
- .write = codec_reg_write_file,
+static const struct dev_pm_ops soc_pm_ops = {
+ .suspend = soc_suspend,
+ .resume = soc_resume,
+ .poweroff = soc_poweroff,
};
-static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
+/* ASoC platform driver */
+static struct platform_driver soc_driver = {
+ .driver = {
+ .name = "soc-audio",
+ .owner = THIS_MODULE,
+ .pm = &soc_pm_ops,
+ },
+ .probe = soc_probe,
+ .remove = soc_remove,
+};
+
+/* create a new pcm */
+static int soc_new_pcm(struct snd_soc_device *socdev,
+ struct snd_soc_dai_link *dai_link, int num)
{
- char codec_root[128];
+ struct snd_soc_card *card = socdev->card;
+ struct snd_soc_codec *codec = card->codec;
+ struct snd_soc_platform *platform = card->platform;
+ struct snd_soc_dai *codec_dai = dai_link->codec_dai;
+ struct snd_soc_dai *cpu_dai = dai_link->cpu_dai;
+ struct snd_soc_pcm_runtime *rtd;
+ struct snd_pcm *pcm;
+ char new_name[64];
+ int ret = 0, playback = 0, capture = 0;
- if (codec->dev)
- snprintf(codec_root, sizeof(codec_root),
- "%s.%s", codec->name, dev_name(codec->dev));
- else
- snprintf(codec_root, sizeof(codec_root),
- "%s", codec->name);
+ rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL);
+ if (rtd == NULL)
+ return -ENOMEM;
- codec->debugfs_codec_root = debugfs_create_dir(codec_root,
- debugfs_root);
- if (!codec->debugfs_codec_root) {
- printk(KERN_WARNING
- "ASoC: Failed to create codec debugfs directory\n");
- return;
- }
+ rtd->dai = dai_link;
+ rtd->socdev = socdev;
+ codec_dai->codec = card->codec;
- codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
- codec->debugfs_codec_root,
- codec, &codec_reg_fops);
- if (!codec->debugfs_reg)
- printk(KERN_WARNING
- "ASoC: Failed to create codec register debugfs file\n");
+ /* check client and interface hw capabilities */
+ snprintf(new_name, sizeof(new_name), "%s %s-%d",
+ dai_link->stream_name, codec_dai->name, num);
- codec->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0744,
- codec->debugfs_codec_root,
- &codec->pop_time);
- if (!codec->debugfs_pop_time)
- printk(KERN_WARNING
- "Failed to create pop time debugfs file\n");
+ if (codec_dai->playback.channels_min)
+ playback = 1;
+ if (codec_dai->capture.channels_min)
+ capture = 1;
- codec->debugfs_dapm = debugfs_create_dir("dapm",
- codec->debugfs_codec_root);
- if (!codec->debugfs_dapm)
- printk(KERN_WARNING
- "Failed to create DAPM debugfs directory\n");
+ ret = snd_pcm_new(codec->card, new_name, codec->pcm_devs++, playback,
+ capture, &pcm);
+ if (ret < 0) {
+ printk(KERN_ERR "asoc: can't create pcm for codec %s\n",
+ codec->name);
+ kfree(rtd);
+ return ret;
+ }
- snd_soc_dapm_debugfs_init(codec);
-}
+ dai_link->pcm = pcm;
+ pcm->private_data = rtd;
+ soc_pcm_ops.mmap = platform->pcm_ops->mmap;
+ soc_pcm_ops.ioctl = platform->pcm_ops->ioctl;
+ soc_pcm_ops.copy = platform->pcm_ops->copy;
+ soc_pcm_ops.silence = platform->pcm_ops->silence;
+ soc_pcm_ops.ack = platform->pcm_ops->ack;
+ soc_pcm_ops.page = platform->pcm_ops->page;
-static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
-{
- debugfs_remove_recursive(codec->debugfs_codec_root);
-}
+ if (playback)
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops);
-#else
+ if (capture)
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops);
-static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec)
-{
+ ret = platform->pcm_new(codec->card, codec_dai, pcm);
+ if (ret < 0) {
+ printk(KERN_ERR "asoc: platform pcm constructor failed\n");
+ kfree(rtd);
+ return ret;
+ }
+
+ pcm->private_free = platform->pcm_free;
+ printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name,
+ cpu_dai->name);
+ return ret;
}
-static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
+/**
+ * snd_soc_codec_volatile_register: Report if a register is volatile.
+ *
+ * @codec: CODEC to query.
+ * @reg: Register to query.
+ *
+ * Boolean function indiciating if a CODEC register is volatile.
+ */
+int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, int reg)
{
+ if (codec->volatile_register)
+ return codec->volatile_register(reg);
+ else
+ return 0;
}
-#endif
+EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
/**
* snd_soc_new_ac97_codec - initailise AC97 device
codec->ac97->bus->ops = ops;
codec->ac97->num = num;
+ codec->dev = &codec->ac97->dev;
mutex_unlock(&codec->mutex);
return 0;
}
*
* Returns 1 for change else 0.
*/
-static int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
- unsigned short reg, unsigned int mask,
- unsigned int value)
+int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
+ unsigned short reg, unsigned int mask,
+ unsigned int value)
{
int change;
return change;
}
+EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
/**
* snd_soc_test_bits - test register for change
mutex_unlock(&codec->mutex);
return ret;
}
- }
-
- mutex_unlock(&codec->mutex);
- return ret;
-}
-EXPORT_SYMBOL_GPL(snd_soc_new_pcms);
-
-/**
- * snd_soc_init_card - register sound card
- * @socdev: the SoC audio device
- *
- * Register a SoC sound card. Also registers an AC97 device if the
- * codec is AC97 for ad hoc devices.
- *
- * Returns 0 for success, else error.
- */
-int snd_soc_init_card(struct snd_soc_device *socdev)
-{
- struct snd_soc_card *card = socdev->card;
- struct snd_soc_codec *codec = card->codec;
- int ret = 0, i, ac97 = 0, err = 0;
-
- for (i = 0; i < card->num_links; i++) {
- if (card->dai_link[i].init) {
- err = card->dai_link[i].init(codec);
- if (err < 0) {
- printk(KERN_ERR "asoc: failed to init %s\n",
- card->dai_link[i].stream_name);
- continue;
- }
- }
- if (card->dai_link[i].codec_dai->ac97_control) {
- ac97 = 1;
+ /* Check for codec->ac97 to handle the ac97.c fun */
+ if (card->dai_link[i].codec_dai->ac97_control && codec->ac97) {
snd_ac97_dev_add_pdata(codec->ac97,
card->dai_link[i].cpu_dai->ac97_pdata);
}
}
- snprintf(codec->card->shortname, sizeof(codec->card->shortname),
- "%s", card->name);
- snprintf(codec->card->longname, sizeof(codec->card->longname),
- "%s (%s)", card->name, codec->name);
-
- /* Make sure all DAPM widgets are instantiated */
- snd_soc_dapm_new_widgets(codec);
-
- ret = snd_card_register(codec->card);
- if (ret < 0) {
- printk(KERN_ERR "asoc: failed to register soundcard for %s\n",
- codec->name);
- goto out;
- }
-
- mutex_lock(&codec->mutex);
-#ifdef CONFIG_SND_SOC_AC97_BUS
- /* Only instantiate AC97 if not already done by the adaptor
- * for the generic AC97 subsystem.
- */
- if (ac97 && strcmp(codec->name, "AC97") != 0) {
- ret = soc_ac97_dev_register(codec);
- if (ret < 0) {
- printk(KERN_ERR "asoc: AC97 device register failed\n");
- snd_card_free(codec->card);
- mutex_unlock(&codec->mutex);
- goto out;
- }
- }
-#endif
-
- err = snd_soc_dapm_sys_add(socdev->dev);
- if (err < 0)
- printk(KERN_WARNING "asoc: failed to add dapm sysfs entries\n");
- err = device_create_file(socdev->dev, &dev_attr_codec_reg);
- if (err < 0)
- printk(KERN_WARNING "asoc: failed to add codec sysfs files\n");
-
- soc_init_codec_debugfs(codec);
mutex_unlock(&codec->mutex);
-
-out:
return ret;
}
-EXPORT_SYMBOL_GPL(snd_soc_init_card);
+EXPORT_SYMBOL_GPL(snd_soc_new_pcms);
/**
* snd_soc_free_pcms - free sound card and pcms
{
struct soc_mixer_control *mc =
(struct soc_mixer_control *)kcontrol->private_value;
- int max = mc->max;
+ int platform_max;
unsigned int shift = mc->shift;
unsigned int rshift = mc->rshift;
- if (max == 1 && !strstr(kcontrol->id.name, " Volume"))
+ if (!mc->platform_max)
+ mc->platform_max = mc->max;
+ platform_max = mc->platform_max;
+
+ if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
else
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = shift == rshift ? 1 : 2;
uinfo->value.integer.min = 0;
- uinfo->value.integer.max = max;
+ uinfo->value.integer.max = platform_max;
return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
{
struct soc_mixer_control *mc =
(struct soc_mixer_control *)kcontrol->private_value;
- int max = mc->max;
+ int platform_max;
- if (max == 1 && !strstr(kcontrol->id.name, " Volume"))
+ if (!mc->platform_max)
+ mc->platform_max = mc->max;
+ platform_max = mc->platform_max;
+
+ if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
else
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 2;
uinfo->value.integer.min = 0;
- uinfo->value.integer.max = max;
+ uinfo->value.integer.max = platform_max;
return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r);
{
struct soc_mixer_control *mc =
(struct soc_mixer_control *)kcontrol->private_value;
- int max = mc->max;
+ int platform_max;
int min = mc->min;
+ if (!mc->platform_max)
+ mc->platform_max = mc->max;
+ platform_max = mc->platform_max;
+
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 2;
uinfo->value.integer.min = 0;
- uinfo->value.integer.max = max-min;
+ uinfo->value.integer.max = platform_max - min;
return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
/**
+ * snd_soc_limit_volume - Set new limit to an existing volume control.
+ *
+ * @codec: where to look for the control
+ * @name: Name of the control
+ * @max: new maximum limit
+ *
+ * Return 0 for success, else error.
+ */
+int snd_soc_limit_volume(struct snd_soc_codec *codec,
+ const char *name, int max)
+{
+ struct snd_card *card = codec->card;
+ struct snd_kcontrol *kctl;
+ struct soc_mixer_control *mc;
+ int found = 0;
+ int ret = -EINVAL;
+
+ /* Sanity check for name and max */
+ if (unlikely(!name || max <= 0))
+ return -EINVAL;
+
+ list_for_each_entry(kctl, &card->controls, list) {
+ if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
+ found = 1;
+ break;
+ }
+ }
+ if (found) {
+ mc = (struct soc_mixer_control *)kctl->private_value;
+ if (max <= mc->max) {
+ mc->platform_max = max;
+ ret = 0;
+ }
+ }
+ return ret;
+}
+EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
+
+/**
* snd_soc_dai_set_sysclk - configure DAI system or master clock.
* @dai: DAI
* @clk_id: DAI specific clock ID
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff