* 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);
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;
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/* Reduce power if no longer active */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/* Fall into standby if no longer active */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);
}
}
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);
}
}
- /* 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);
- snd_soc_dai_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);
- snd_soc_dai_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);
- snd_soc_dai_digital_mute(codec_dai, 0);
- }
+ snd_soc_dai_digital_mute(codec_dai, 0);
}
out:
}
/* 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
if (err < 0)
printk(KERN_WARNING "asoc: failed to add codec sysfs files\n");
+ soc_init_debugfs(socdev);
mutex_unlock(&codec->mutex);
out:
#endif
mutex_lock(&codec->mutex);
+ soc_cleanup_debugfs(socdev);
#ifdef CONFIG_SND_SOC_AC97_BUS
for (i = 0; i < codec->num_dai; i++) {
codec_dai = &codec->dai[i];
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]
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;
int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
- int max = (signed char)((kcontrol->private_value >> 16) & 0xff);
- int min = (signed char)((kcontrol->private_value >> 24) & 0xff);
+ 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;
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);
- int reg = kcontrol->private_value & 0xff;
- int min = (signed char)((kcontrol->private_value >> 24) & 0xff);
+ unsigned int reg = mc->reg;
+ int min = mc->min;
int val = snd_soc_read(codec, reg);
ucontrol->value.integer.value[0] =
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);
- int reg = kcontrol->private_value & 0xff;
- int min = (signed char)((kcontrol->private_value >> 24) & 0xff);
+ unsigned int reg = mc->reg;
+ int min = mc->min;
unsigned short val;
val = (ucontrol->value.integer.value[0]+min) & 0xff;
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