* Copyright 2005 Wolfson Microelectronics PLC.
* Copyright 2005 Openedhand Ltd.
*
- * Author: Liam Girdwood
- * liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com
+ * Author: Liam Girdwood <lrg@slimlogic.co.uk>
* with code, comments and ideas from :-
* Richard Purdie <richard@openedhand.com>
*
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/bitops.h>
+#include <linux/debugfs.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>
-/* debug */
-#define SOC_DEBUG 0
-#if SOC_DEBUG
-#define dbg(format, arg...) printk(format, ## arg)
-#else
-#define dbg(format, arg...)
-#endif
-
static DEFINE_MUTEX(pcm_mutex);
static DEFINE_MUTEX(io_mutex);
static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq);
}
#endif
-static inline const char* get_dai_name(int type)
+static inline const char *get_dai_name(int type)
{
- switch(type) {
+ switch (type) {
case SND_SOC_DAI_AC97_BUS:
case SND_SOC_DAI_AC97:
return "AC97";
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_soc_dai_link *machine = rtd->dai;
struct snd_soc_platform *platform = socdev->platform;
- struct snd_soc_cpu_dai *cpu_dai = machine->cpu_dai;
- struct snd_soc_codec_dai *codec_dai = machine->codec_dai;
+ struct snd_soc_dai *cpu_dai = machine->cpu_dai;
+ struct snd_soc_dai *codec_dai = machine->codec_dai;
int ret = 0;
mutex_lock(&pcm_mutex);
/* Check that the codec and cpu DAI's are compatible */
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
runtime->hw.rate_min =
- max(codec_dai->playback.rate_min, cpu_dai->playback.rate_min);
+ max(codec_dai->playback.rate_min,
+ cpu_dai->playback.rate_min);
runtime->hw.rate_max =
- min(codec_dai->playback.rate_max, cpu_dai->playback.rate_max);
+ min(codec_dai->playback.rate_max,
+ cpu_dai->playback.rate_max);
runtime->hw.channels_min =
max(codec_dai->playback.channels_min,
cpu_dai->playback.channels_min);
codec_dai->playback.rates & cpu_dai->playback.rates;
} else {
runtime->hw.rate_min =
- max(codec_dai->capture.rate_min, cpu_dai->capture.rate_min);
+ max(codec_dai->capture.rate_min,
+ cpu_dai->capture.rate_min);
runtime->hw.rate_max =
- min(codec_dai->capture.rate_max, cpu_dai->capture.rate_max);
+ min(codec_dai->capture.rate_max,
+ cpu_dai->capture.rate_max);
runtime->hw.channels_min =
max(codec_dai->capture.channels_min,
cpu_dai->capture.channels_min);
goto machine_err;
}
- dbg("asoc: %s <-> %s info:\n",codec_dai->name, cpu_dai->name);
- dbg("asoc: rate mask 0x%x\n", runtime->hw.rates);
- dbg("asoc: min ch %d max ch %d\n", runtime->hw.channels_min,
- runtime->hw.channels_max);
- dbg("asoc: min rate %d max rate %d\n", runtime->hw.rate_min,
- runtime->hw.rate_max);
+ 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 = 1;
struct snd_soc_device *socdev =
container_of(work, struct snd_soc_device, delayed_work.work);
struct snd_soc_codec *codec = socdev->codec;
- struct snd_soc_codec_dai *codec_dai;
+ struct snd_soc_dai *codec_dai;
int i;
mutex_lock(&pcm_mutex);
- for(i = 0; i < codec->num_dai; i++) {
+ for (i = 0; i < codec->num_dai; i++) {
codec_dai = &codec->dai[i];
- dbg("pop wq checking: %s status: %s waiting: %s\n",
- codec_dai->playback.stream_name,
- codec_dai->playback.active ? "active" : "inactive",
- codec_dai->pop_wait ? "yes" : "no");
+ pr_debug("pop wq checking: %s status: %s waiting: %s\n",
+ codec_dai->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) {
/* Reduce power if no longer active */
if (codec->active == 0) {
- dbg("pop wq D1 %s %s\n", codec->name,
- codec_dai->playback.stream_name);
+ pr_debug("pop wq D1 %s %s\n", codec->name,
+ codec_dai->playback.stream_name);
snd_soc_dapm_set_bias_level(socdev,
SND_SOC_BIAS_PREPARE);
}
/* Fall into standby if no longer active */
if (codec->active == 0) {
- dbg("pop wq D3 %s %s\n", codec->name,
- codec_dai->playback.stream_name);
+ pr_debug("pop wq D3 %s %s\n", codec->name,
+ codec_dai->playback.stream_name);
snd_soc_dapm_set_bias_level(socdev,
SND_SOC_BIAS_STANDBY);
}
struct snd_soc_device *socdev = rtd->socdev;
struct snd_soc_dai_link *machine = rtd->dai;
struct snd_soc_platform *platform = socdev->platform;
- struct snd_soc_cpu_dai *cpu_dai = machine->cpu_dai;
- struct snd_soc_codec_dai *codec_dai = machine->codec_dai;
+ struct snd_soc_dai *cpu_dai = machine->cpu_dai;
+ struct snd_soc_dai *codec_dai = machine->codec_dai;
struct snd_soc_codec *codec = socdev->codec;
mutex_lock(&pcm_mutex);
}
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->ops.shutdown)
cpu_dai->ops.shutdown(substream);
struct snd_soc_device *socdev = rtd->socdev;
struct snd_soc_dai_link *machine = rtd->dai;
struct snd_soc_platform *platform = socdev->platform;
- struct snd_soc_cpu_dai *cpu_dai = machine->cpu_dai;
- struct snd_soc_codec_dai *codec_dai = machine->codec_dai;
+ struct snd_soc_dai *cpu_dai = machine->cpu_dai;
+ struct snd_soc_dai *codec_dai = machine->codec_dai;
struct snd_soc_codec *codec = socdev->codec;
int ret = 0;
}
}
- /* we only want to start a DAPM playback stream if we are not waiting
- * on an existing one stopping */
- if (codec_dai->pop_wait) {
- /* we are waiting for the delayed work to start */
- if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
- snd_soc_dapm_stream_event(socdev->codec,
- codec_dai->capture.stream_name,
- SND_SOC_DAPM_STREAM_START);
- else {
- codec_dai->pop_wait = 0;
- cancel_delayed_work(&socdev->delayed_work);
- if (codec_dai->dai_ops.digital_mute)
- codec_dai->dai_ops.digital_mute(codec_dai, 0);
- }
- } else {
- /* no delayed work - do we need to power up codec */
- if (codec->bias_level != SND_SOC_BIAS_ON) {
+ /* 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(&socdev->delayed_work);
+ }
- snd_soc_dapm_set_bias_level(socdev,
- SND_SOC_BIAS_PREPARE);
+ /* do we need to power up codec */
+ if (codec->bias_level != SND_SOC_BIAS_ON) {
+ snd_soc_dapm_set_bias_level(socdev,
+ SND_SOC_BIAS_PREPARE);
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- snd_soc_dapm_stream_event(codec,
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ snd_soc_dapm_stream_event(codec,
codec_dai->playback.stream_name,
SND_SOC_DAPM_STREAM_START);
- else
- snd_soc_dapm_stream_event(codec,
+ else
+ snd_soc_dapm_stream_event(codec,
codec_dai->capture.stream_name,
SND_SOC_DAPM_STREAM_START);
- snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_ON);
- if (codec_dai->dai_ops.digital_mute)
- codec_dai->dai_ops.digital_mute(codec_dai, 0);
+ snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_ON);
+ snd_soc_dai_digital_mute(codec_dai, 0);
- } else {
- /* codec already powered - power on widgets */
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- snd_soc_dapm_stream_event(codec,
+ } else {
+ /* codec already powered - power on widgets */
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ snd_soc_dapm_stream_event(codec,
codec_dai->playback.stream_name,
SND_SOC_DAPM_STREAM_START);
- else
- snd_soc_dapm_stream_event(codec,
+ else
+ snd_soc_dapm_stream_event(codec,
codec_dai->capture.stream_name,
SND_SOC_DAPM_STREAM_START);
- if (codec_dai->dai_ops.digital_mute)
- codec_dai->dai_ops.digital_mute(codec_dai, 0);
- }
+
+ snd_soc_dai_digital_mute(codec_dai, 0);
}
out:
struct snd_soc_device *socdev = rtd->socdev;
struct snd_soc_dai_link *machine = rtd->dai;
struct snd_soc_platform *platform = socdev->platform;
- struct snd_soc_cpu_dai *cpu_dai = machine->cpu_dai;
- struct snd_soc_codec_dai *codec_dai = machine->codec_dai;
+ struct snd_soc_dai *cpu_dai = machine->cpu_dai;
+ struct snd_soc_dai *codec_dai = machine->codec_dai;
int ret = 0;
mutex_lock(&pcm_mutex);
if (cpu_dai->ops.hw_params) {
ret = cpu_dai->ops.hw_params(substream, params);
if (ret < 0) {
- printk(KERN_ERR "asoc: can't set interface %s hw params\n",
+ printk(KERN_ERR "asoc: interface %s hw params failed\n",
cpu_dai->name);
goto interface_err;
}
if (platform->pcm_ops->hw_params) {
ret = platform->pcm_ops->hw_params(substream, params);
if (ret < 0) {
- printk(KERN_ERR "asoc: can't set platform %s hw params\n",
+ printk(KERN_ERR "asoc: platform %s hw params failed\n",
platform->name);
goto platform_err;
}
codec_dai->ops.hw_free(substream);
codec_err:
- if(machine->ops && machine->ops->hw_free)
+ if (machine->ops && machine->ops->hw_free)
machine->ops->hw_free(substream);
mutex_unlock(&pcm_mutex);
struct snd_soc_device *socdev = rtd->socdev;
struct snd_soc_dai_link *machine = rtd->dai;
struct snd_soc_platform *platform = socdev->platform;
- struct snd_soc_cpu_dai *cpu_dai = machine->cpu_dai;
- struct snd_soc_codec_dai *codec_dai = machine->codec_dai;
+ struct snd_soc_dai *cpu_dai = machine->cpu_dai;
+ struct snd_soc_dai *codec_dai = machine->codec_dai;
struct snd_soc_codec *codec = socdev->codec;
mutex_lock(&pcm_mutex);
/* apply codec digital mute */
- if (!codec->active && codec_dai->dai_ops.digital_mute)
- codec_dai->dai_ops.digital_mute(codec_dai, 1);
+ if (!codec->active)
+ snd_soc_dai_digital_mute(codec_dai, 1);
/* free any machine hw params */
if (machine->ops && machine->ops->hw_free)
struct snd_soc_device *socdev = rtd->socdev;
struct snd_soc_dai_link *machine = rtd->dai;
struct snd_soc_platform *platform = socdev->platform;
- struct snd_soc_cpu_dai *cpu_dai = machine->cpu_dai;
- struct snd_soc_codec_dai *codec_dai = machine->codec_dai;
+ struct snd_soc_dai *cpu_dai = machine->cpu_dai;
+ struct snd_soc_dai *codec_dai = machine->codec_dai;
int ret;
if (codec_dai->ops.trigger) {
/* powers down audio subsystem for suspend */
static int soc_suspend(struct platform_device *pdev, pm_message_t state)
{
- struct snd_soc_device *socdev = platform_get_drvdata(pdev);
- struct snd_soc_machine *machine = socdev->machine;
- struct snd_soc_platform *platform = socdev->platform;
- struct snd_soc_codec_device *codec_dev = socdev->codec_dev;
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_machine *machine = socdev->machine;
+ struct snd_soc_platform *platform = socdev->platform;
+ struct snd_soc_codec_device *codec_dev = socdev->codec_dev;
struct snd_soc_codec *codec = socdev->codec;
int i;
+ /* Due to the resume being scheduled into a workqueue we could
+ * suspend before that's finished - wait for it to complete.
+ */
+ snd_power_lock(codec->card);
+ snd_power_wait(codec->card, SNDRV_CTL_POWER_D0);
+ snd_power_unlock(codec->card);
+
+ /* we're going to block userspace touching us until resume completes */
+ snd_power_change_state(codec->card, SNDRV_CTL_POWER_D3hot);
+
/* mute any active DAC's */
- for(i = 0; i < machine->num_links; i++) {
- struct snd_soc_codec_dai *dai = machine->dai_link[i].codec_dai;
+ for (i = 0; i < machine->num_links; i++) {
+ struct snd_soc_dai *dai = machine->dai_link[i].codec_dai;
if (dai->dai_ops.digital_mute && dai->playback.active)
dai->dai_ops.digital_mute(dai, 1);
}
if (machine->suspend_pre)
machine->suspend_pre(pdev, state);
- for(i = 0; i < machine->num_links; i++) {
- struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai;
+ for (i = 0; i < machine->num_links; i++) {
+ struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai;
if (cpu_dai->suspend && cpu_dai->type != SND_SOC_DAI_AC97)
cpu_dai->suspend(pdev, cpu_dai);
if (platform->suspend)
run_delayed_work(&socdev->delayed_work);
codec->suspend_bias_level = codec->bias_level;
- for(i = 0; i < codec->num_dai; i++) {
+ for (i = 0; i < codec->num_dai; i++) {
char *stream = codec->dai[i].playback.stream_name;
if (stream != NULL)
snd_soc_dapm_stream_event(codec, stream,
if (codec_dev->suspend)
codec_dev->suspend(pdev, state);
- for(i = 0; i < machine->num_links; i++) {
- struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai;
+ for (i = 0; i < machine->num_links; i++) {
+ struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai;
if (cpu_dai->suspend && cpu_dai->type == SND_SOC_DAI_AC97)
cpu_dai->suspend(pdev, cpu_dai);
}
return 0;
}
-/* powers up audio subsystem after a suspend */
-static int soc_resume(struct platform_device *pdev)
+/* deferred resume work, so resume can complete before we finished
+ * setting our codec back up, which can be very slow on I2C
+ */
+static void soc_resume_deferred(struct work_struct *work)
{
- struct snd_soc_device *socdev = platform_get_drvdata(pdev);
- struct snd_soc_machine *machine = socdev->machine;
- struct snd_soc_platform *platform = socdev->platform;
- struct snd_soc_codec_device *codec_dev = socdev->codec_dev;
+ struct snd_soc_device *socdev = container_of(work,
+ struct snd_soc_device,
+ deferred_resume_work);
+ struct snd_soc_machine *machine = socdev->machine;
+ struct snd_soc_platform *platform = socdev->platform;
+ struct snd_soc_codec_device *codec_dev = socdev->codec_dev;
struct snd_soc_codec *codec = socdev->codec;
+ struct platform_device *pdev = to_platform_device(socdev->dev);
int i;
+ /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
+ * so userspace apps are blocked from touching us
+ */
+
+ dev_info(socdev->dev, "starting resume work\n");
+
if (machine->resume_pre)
machine->resume_pre(pdev);
- for(i = 0; i < machine->num_links; i++) {
- struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai;
+ for (i = 0; i < machine->num_links; i++) {
+ struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai;
if (cpu_dai->resume && cpu_dai->type == SND_SOC_DAI_AC97)
cpu_dai->resume(pdev, cpu_dai);
}
if (codec_dev->resume)
codec_dev->resume(pdev);
- for(i = 0; i < codec->num_dai; i++) {
- char* stream = codec->dai[i].playback.stream_name;
+ for (i = 0; i < codec->num_dai; i++) {
+ char *stream = codec->dai[i].playback.stream_name;
if (stream != NULL)
snd_soc_dapm_stream_event(codec, stream,
SND_SOC_DAPM_STREAM_RESUME);
SND_SOC_DAPM_STREAM_RESUME);
}
- /* unmute any active DAC's */
- for(i = 0; i < machine->num_links; i++) {
- struct snd_soc_codec_dai *dai = machine->dai_link[i].codec_dai;
+ /* unmute any active DACs */
+ for (i = 0; i < machine->num_links; i++) {
+ struct snd_soc_dai *dai = machine->dai_link[i].codec_dai;
if (dai->dai_ops.digital_mute && dai->playback.active)
dai->dai_ops.digital_mute(dai, 0);
}
- for(i = 0; i < machine->num_links; i++) {
- struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai;
+ for (i = 0; i < machine->num_links; i++) {
+ struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai;
if (cpu_dai->resume && cpu_dai->type != SND_SOC_DAI_AC97)
cpu_dai->resume(pdev, cpu_dai);
if (platform->resume)
if (machine->resume_post)
machine->resume_post(pdev);
+ dev_info(socdev->dev, "resume work completed\n");
+
+ /* userspace can access us now we are back as we were before */
+ snd_power_change_state(codec->card, SNDRV_CTL_POWER_D0);
+}
+
+/* powers up audio subsystem after a suspend */
+static int soc_resume(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+
+ dev_info(socdev->dev, "scheduling resume work\n");
+
+ if (!schedule_work(&socdev->deferred_resume_work))
+ dev_err(socdev->dev, "work item may be lost\n");
+
return 0;
}
if (machine->probe) {
ret = machine->probe(pdev);
- if(ret < 0)
+ if (ret < 0)
return ret;
}
for (i = 0; i < machine->num_links; i++) {
- struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai;
+ struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai;
if (cpu_dai->probe) {
- ret = cpu_dai->probe(pdev);
- if(ret < 0)
+ ret = cpu_dai->probe(pdev, cpu_dai);
+ if (ret < 0)
goto cpu_dai_err;
}
}
if (codec_dev->probe) {
ret = codec_dev->probe(pdev);
- if(ret < 0)
+ if (ret < 0)
goto cpu_dai_err;
}
if (platform->probe) {
ret = platform->probe(pdev);
- if(ret < 0)
+ if (ret < 0)
goto platform_err;
}
/* DAPM stream work */
INIT_DELAYED_WORK(&socdev->delayed_work, close_delayed_work);
+#ifdef CONFIG_PM
+ /* deferred resume work */
+ INIT_WORK(&socdev->deferred_resume_work, soc_resume_deferred);
+#endif
+
return 0;
platform_err:
cpu_dai_err:
for (i--; i >= 0; i--) {
- struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai;
+ struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai;
if (cpu_dai->remove)
- cpu_dai->remove(pdev);
+ cpu_dai->remove(pdev, cpu_dai);
}
if (machine->remove)
codec_dev->remove(pdev);
for (i = 0; i < machine->num_links; i++) {
- struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai;
+ struct snd_soc_dai *cpu_dai = machine->dai_link[i].cpu_dai;
if (cpu_dai->remove)
- cpu_dai->remove(pdev);
+ cpu_dai->remove(pdev, cpu_dai);
}
if (machine->remove)
struct snd_soc_dai_link *dai_link, int num)
{
struct snd_soc_codec *codec = socdev->codec;
- struct snd_soc_codec_dai *codec_dai = dai_link->codec_dai;
- struct snd_soc_cpu_dai *cpu_dai = dai_link->cpu_dai;
+ 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];
codec_dai->codec = socdev->codec;
/* check client and interface hw capabilities */
- sprintf(new_name, "%s %s-%s-%d",dai_link->stream_name, codec_dai->name,
+ sprintf(new_name, "%s %s-%s-%d", dai_link->stream_name, codec_dai->name,
get_dai_name(cpu_dai->type), num);
if (codec_dai->playback.channels_min)
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);
+ printk(KERN_ERR "asoc: can't create pcm for codec %s\n",
+ codec->name);
kfree(rtd);
return ret;
}
}
/* codec register dump */
-static ssize_t codec_reg_show(struct device *dev,
- struct device_attribute *attr, char *buf)
+static ssize_t soc_codec_reg_show(struct snd_soc_device *devdata, char *buf)
{
- struct snd_soc_device *devdata = dev_get_drvdata(dev);
struct snd_soc_codec *codec = devdata->codec;
int i, step = 1, count = 0;
step = codec->reg_cache_step;
count += sprintf(buf, "%s registers\n", codec->name);
- for(i = 0; i < codec->reg_cache_size; i += step)
- count += sprintf(buf + count, "%2x: %4x\n", i, codec->read(codec, i));
+ for (i = 0; i < codec->reg_cache_size; i += step) {
+ 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, 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_device *devdata = file->private_data;
+ char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+ ret = soc_codec_reg_show(devdata, 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_device *devdata = file->private_data;
+ struct snd_soc_codec *codec = devdata->codec;
+
+ 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_debugfs(struct snd_soc_device *socdev)
+{
+ struct dentry *root, *file;
+ struct snd_soc_codec *codec = socdev->codec;
+ root = debugfs_create_dir(dev_name(socdev->dev), NULL);
+ if (IS_ERR(root) || !root)
+ goto exit1;
+
+ file = debugfs_create_file("codec_reg", 0644,
+ root, socdev, &codec_reg_fops);
+ if (!file)
+ goto exit2;
+
+ file = debugfs_create_u32("dapm_pop_time", 0744,
+ root, &codec->pop_time);
+ if (!file)
+ goto exit2;
+ socdev->debugfs_root = root;
+ return;
+exit2:
+ debugfs_remove_recursive(root);
+exit1:
+ dev_err(socdev->dev, "debugfs is not available\n");
+}
+
+static void soc_cleanup_debugfs(struct snd_soc_device *socdev)
+{
+ debugfs_remove_recursive(socdev->debugfs_root);
+ socdev->debugfs_root = NULL;
+}
+
+#else
+
+static inline void soc_init_debugfs(struct snd_soc_device *socdev)
+{
+}
+
+static inline void soc_cleanup_debugfs(struct snd_soc_device *socdev)
+{
+}
+#endif
+
/**
* snd_soc_new_ac97_codec - initailise AC97 device
* @codec: audio codec
strncpy(codec->card->driver, codec->name, sizeof(codec->card->driver));
/* create the pcms */
- for(i = 0; i < machine->num_links; i++) {
+ for (i = 0; i < machine->num_links; i++) {
ret = soc_new_pcm(socdev, &machine->dai_link[i], i);
if (ret < 0) {
printk(KERN_ERR "asoc: can't create pcm %s\n",
struct snd_soc_machine *machine = socdev->machine;
int ret = 0, i, ac97 = 0, err = 0;
- for(i = 0; i < machine->num_links; i++) {
+ for (i = 0; i < machine->num_links; i++) {
if (socdev->machine->dai_link[i].init) {
err = socdev->machine->dai_link[i].init(codec);
if (err < 0) {
continue;
}
}
- if (socdev->machine->dai_link[i].codec_dai->type ==
+ if (socdev->machine->dai_link[i].codec_dai->type ==
SND_SOC_DAI_AC97_BUS)
ac97 = 1;
}
ret = snd_card_register(codec->card);
if (ret < 0) {
- printk(KERN_ERR "asoc: failed to register soundcard for codec %s\n",
+ printk(KERN_ERR "asoc: failed to register soundcard for %s\n",
codec->name);
goto out;
}
err = device_create_file(socdev->dev, &dev_attr_codec_reg);
if (err < 0)
- printk(KERN_WARNING "asoc: failed to add codec sysfs entries\n");
+ printk(KERN_WARNING "asoc: failed to add codec sysfs files\n");
+ soc_init_debugfs(socdev);
mutex_unlock(&codec->mutex);
out:
{
struct snd_soc_codec *codec = socdev->codec;
#ifdef CONFIG_SND_SOC_AC97_BUS
- struct snd_soc_codec_dai *codec_dai;
+ struct snd_soc_dai *codec_dai;
int i;
#endif
mutex_lock(&codec->mutex);
+ soc_cleanup_debugfs(socdev);
#ifdef CONFIG_SND_SOC_AC97_BUS
- for(i = 0; i < codec->num_dai; i++) {
+ for (i = 0; i < codec->num_dai; i++) {
codec_dai = &codec->dai[i];
if (codec_dai->type == SND_SOC_DAI_AC97_BUS && codec->ac97) {
soc_ac97_dev_unregister(codec);
uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
- uinfo->value.enumerated.items = e->mask;
+ uinfo->value.enumerated.items = e->max;
- if (uinfo->value.enumerated.item > e->mask - 1)
- uinfo->value.enumerated.item = e->mask - 1;
+ if (uinfo->value.enumerated.item > e->max - 1)
+ uinfo->value.enumerated.item = e->max - 1;
strcpy(uinfo->value.enumerated.name,
e->texts[uinfo->value.enumerated.item]);
return 0;
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
unsigned short val, bitmask;
- for (bitmask = 1; bitmask < e->mask; bitmask <<= 1)
+ for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
;
val = snd_soc_read(codec, e->reg);
- ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1);
+ ucontrol->value.enumerated.item[0]
+ = (val >> e->shift_l) & (bitmask - 1);
if (e->shift_l != e->shift_r)
ucontrol->value.enumerated.item[1] =
(val >> e->shift_r) & (bitmask - 1);
unsigned short val;
unsigned short mask, bitmask;
- for (bitmask = 1; bitmask < e->mask; bitmask <<= 1)
+ for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
;
- if (ucontrol->value.enumerated.item[0] > e->mask - 1)
+ if (ucontrol->value.enumerated.item[0] > e->max - 1)
return -EINVAL;
val = ucontrol->value.enumerated.item[0] << e->shift_l;
mask = (bitmask - 1) << e->shift_l;
if (e->shift_l != e->shift_r) {
- if (ucontrol->value.enumerated.item[1] > e->mask - 1)
+ if (ucontrol->value.enumerated.item[1] > e->max - 1)
return -EINVAL;
val |= ucontrol->value.enumerated.item[1] << e->shift_r;
mask |= (bitmask - 1) << e->shift_r;
uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
uinfo->count = 1;
- uinfo->value.enumerated.items = e->mask;
+ uinfo->value.enumerated.items = e->max;
- if (uinfo->value.enumerated.item > e->mask - 1)
- uinfo->value.enumerated.item = e->mask - 1;
+ if (uinfo->value.enumerated.item > e->max - 1)
+ uinfo->value.enumerated.item = e->max - 1;
strcpy(uinfo->value.enumerated.name,
e->texts[uinfo->value.enumerated.item]);
return 0;
int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
- int max = (kcontrol->private_value >> 16) & 0xff;
- int shift = (kcontrol->private_value >> 8) & 0x0f;
- int rshift = (kcontrol->private_value >> 12) & 0x0f;
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)kcontrol->private_value;
+ int max = mc->max;
+ unsigned int shift = mc->min;
+ unsigned int rshift = mc->rshift;
if (max == 1)
uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)kcontrol->private_value;
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
- int reg = kcontrol->private_value & 0xff;
- int shift = (kcontrol->private_value >> 8) & 0x0f;
- int rshift = (kcontrol->private_value >> 12) & 0x0f;
- int max = (kcontrol->private_value >> 16) & 0xff;
- int mask = (1 << fls(max)) - 1;
- int invert = (kcontrol->private_value >> 24) & 0x01;
+ unsigned int reg = mc->reg;
+ unsigned int shift = mc->shift;
+ unsigned int rshift = mc->rshift;
+ int max = mc->max;
+ unsigned int mask = (1 << fls(max)) - 1;
+ unsigned int invert = mc->invert;
ucontrol->value.integer.value[0] =
(snd_soc_read(codec, reg) >> shift) & mask;
int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)kcontrol->private_value;
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
- int reg = kcontrol->private_value & 0xff;
- int shift = (kcontrol->private_value >> 8) & 0x0f;
- int rshift = (kcontrol->private_value >> 12) & 0x0f;
- int max = (kcontrol->private_value >> 16) & 0xff;
- int mask = (1 << fls(max)) - 1;
- int invert = (kcontrol->private_value >> 24) & 0x01;
+ unsigned int reg = mc->reg;
+ unsigned int shift = mc->shift;
+ unsigned int rshift = mc->rshift;
+ int max = mc->max;
+ unsigned int mask = (1 << fls(max)) - 1;
+ unsigned int invert = mc->invert;
unsigned short val, val2, val_mask;
val = (ucontrol->value.integer.value[0] & mask);
int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
- int max = (kcontrol->private_value >> 12) & 0xff;
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)kcontrol->private_value;
+ int max = mc->max;
if (max == 1)
uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)kcontrol->private_value;
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
- int reg = kcontrol->private_value & 0xff;
- int reg2 = (kcontrol->private_value >> 24) & 0xff;
- int shift = (kcontrol->private_value >> 8) & 0x0f;
- int max = (kcontrol->private_value >> 12) & 0xff;
- int mask = (1<<fls(max))-1;
- int invert = (kcontrol->private_value >> 20) & 0x01;
+ unsigned int reg = mc->reg;
+ unsigned int reg2 = mc->rreg;
+ unsigned int shift = mc->shift;
+ int max = mc->max;
+ unsigned int mask = (1<<fls(max))-1;
+ unsigned int invert = mc->invert;
ucontrol->value.integer.value[0] =
(snd_soc_read(codec, reg) >> shift) & mask;
int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)kcontrol->private_value;
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
- int reg = kcontrol->private_value & 0xff;
- int reg2 = (kcontrol->private_value >> 24) & 0xff;
- int shift = (kcontrol->private_value >> 8) & 0x0f;
- int max = (kcontrol->private_value >> 12) & 0xff;
- int mask = (1 << fls(max)) - 1;
- int invert = (kcontrol->private_value >> 20) & 0x01;
+ unsigned int reg = mc->reg;
+ unsigned int reg2 = mc->rreg;
+ unsigned int shift = mc->shift;
+ int max = mc->max;
+ unsigned int mask = (1 << fls(max)) - 1;
+ unsigned int invert = mc->invert;
int err;
unsigned short val, val2, val_mask;
val = val << shift;
val2 = val2 << shift;
- if ((err = snd_soc_update_bits(codec, reg, val_mask, val)) < 0)
+ err = snd_soc_update_bits(codec, reg, val_mask, val);
+ if (err < 0)
return err;
err = snd_soc_update_bits(codec, reg2, val_mask, val2);
}
EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r);
+/**
+ * snd_soc_info_volsw_s8 - signed mixer info callback
+ * @kcontrol: mixer control
+ * @uinfo: control element information
+ *
+ * Callback to provide information about a signed mixer control.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)kcontrol->private_value;
+ int max = mc->max;
+ int min = mc->min;
+
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 2;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = max-min;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
+
+/**
+ * snd_soc_get_volsw_s8 - signed mixer get callback
+ * @kcontrol: mixer control
+ * @uinfo: control element information
+ *
+ * Callback to get the value of a signed mixer control.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)kcontrol->private_value;
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ unsigned int reg = mc->reg;
+ int min = mc->min;
+ int val = snd_soc_read(codec, reg);
+
+ ucontrol->value.integer.value[0] =
+ ((signed char)(val & 0xff))-min;
+ ucontrol->value.integer.value[1] =
+ ((signed char)((val >> 8) & 0xff))-min;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
+
+/**
+ * snd_soc_put_volsw_sgn - signed mixer put callback
+ * @kcontrol: mixer control
+ * @uinfo: control element information
+ *
+ * Callback to set the value of a signed mixer control.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)kcontrol->private_value;
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ unsigned int reg = mc->reg;
+ int min = mc->min;
+ unsigned short val;
+
+ val = (ucontrol->value.integer.value[0]+min) & 0xff;
+ val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
+
+ return snd_soc_update_bits(codec, reg, 0xffff, val);
+}
+EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
+
+/**
+ * snd_soc_dai_set_sysclk - configure DAI system or master clock.
+ * @dai: DAI
+ * @clk_id: DAI specific clock ID
+ * @freq: new clock frequency in Hz
+ * @dir: new clock direction - input/output.
+ *
+ * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
+ */
+int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
+ unsigned int freq, int dir)
+{
+ if (dai->dai_ops.set_sysclk)
+ return dai->dai_ops.set_sysclk(dai, clk_id, freq, dir);
+ else
+ return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
+
+/**
+ * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
+ * @dai: DAI
+ * @clk_id: DAI specific clock divider ID
+ * @div: new clock divisor.
+ *
+ * Configures the clock dividers. This is used to derive the best DAI bit and
+ * frame clocks from the system or master clock. It's best to set the DAI bit
+ * and frame clocks as low as possible to save system power.
+ */
+int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
+ int div_id, int div)
+{
+ if (dai->dai_ops.set_clkdiv)
+ return dai->dai_ops.set_clkdiv(dai, div_id, div);
+ else
+ return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
+
+/**
+ * snd_soc_dai_set_pll - configure DAI PLL.
+ * @dai: DAI
+ * @pll_id: DAI specific PLL ID
+ * @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_dai_set_pll(struct snd_soc_dai *dai,
+ int pll_id, unsigned int freq_in, unsigned int freq_out)
+{
+ if (dai->dai_ops.set_pll)
+ return dai->dai_ops.set_pll(dai, pll_id, freq_in, freq_out);
+ else
+ return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
+
+/**
+ * snd_soc_dai_set_fmt - configure DAI hardware audio format.
+ * @dai: DAI
+ * @clk_id: DAI specific clock ID
+ * @fmt: SND_SOC_DAIFMT_ format value.
+ *
+ * Configures the DAI hardware format and clocking.
+ */
+int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ if (dai->dai_ops.set_fmt)
+ return dai->dai_ops.set_fmt(dai, fmt);
+ else
+ return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
+
+/**
+ * snd_soc_dai_set_tdm_slot - configure DAI TDM.
+ * @dai: DAI
+ * @mask: DAI specific mask representing used slots.
+ * @slots: Number of slots in use.
+ *
+ * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
+ * specific.
+ */
+int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
+ unsigned int mask, int slots)
+{
+ if (dai->dai_ops.set_sysclk)
+ return dai->dai_ops.set_tdm_slot(dai, mask, slots);
+ else
+ return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
+
+/**
+ * snd_soc_dai_set_tristate - configure DAI system or master clock.
+ * @dai: DAI
+ * @tristate: tristate enable
+ *
+ * Tristates the DAI so that others can use it.
+ */
+int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
+{
+ if (dai->dai_ops.set_sysclk)
+ return dai->dai_ops.set_tristate(dai, tristate);
+ else
+ return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
+
+/**
+ * snd_soc_dai_digital_mute - configure DAI system or master clock.
+ * @dai: DAI
+ * @mute: mute enable
+ *
+ * Mutes the DAI DAC.
+ */
+int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute)
+{
+ if (dai->dai_ops.digital_mute)
+ return dai->dai_ops.digital_mute(dai, mute);
+ else
+ return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
+
static int __devinit snd_soc_init(void)
{
printk(KERN_INFO "ASoC version %s\n", SND_SOC_VERSION);
static void snd_soc_exit(void)
{
- platform_driver_unregister(&soc_driver);
+ platform_driver_unregister(&soc_driver);
}
module_init(snd_soc_init);
module_exit(snd_soc_exit);
/* Module information */
-MODULE_AUTHOR("Liam Girdwood, liam.girdwood@wolfsonmicro.com, www.wolfsonmicro.com");
+MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
MODULE_DESCRIPTION("ALSA SoC Core");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:soc-audio");
projects / deliverable / linux.git / blobdiff