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Diffstat (limited to 'sound/soc/soc-core.c')
-rw-r--r--sound/soc/soc-core.c49
1 files changed, 43 insertions, 6 deletions
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 0a6440c6f54..a03bac943aa 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -130,6 +130,29 @@ static ssize_t codec_reg_show(struct device *dev,
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)
{
@@ -542,7 +565,7 @@ static int soc_codec_close(struct snd_pcm_substream *substream)
/* 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,
@@ -940,6 +963,12 @@ static int soc_resume(struct device *dev)
struct snd_soc_card *card = socdev->card;
struct snd_soc_dai *cpu_dai = card->dai_link[0].cpu_dai;
+ /* 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
@@ -1039,6 +1068,8 @@ static void snd_soc_instantiate_card(struct snd_soc_card *card)
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)
@@ -1122,6 +1153,10 @@ static void snd_soc_instantiate_card(struct snd_soc_card *card)
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");
@@ -1276,8 +1311,8 @@ static int soc_new_pcm(struct snd_soc_device *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);
+ snprintf(new_name, sizeof(new_name), "%s %s-%d",
+ dai_link->stream_name, codec_dai->name, num);
if (codec_dai->playback.channels_min)
playback = 1;
@@ -1368,6 +1403,7 @@ int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
codec->ac97->bus->ops = ops;
codec->ac97->num = num;
+ codec->dev = &codec->ac97->dev;
mutex_unlock(&codec->mutex);
return 0;
}
@@ -1427,9 +1463,9 @@ EXPORT_SYMBOL_GPL(snd_soc_update_bits);
*
* 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;
@@ -1439,6 +1475,7 @@ static int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
return change;
}
+EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
/**
* snd_soc_test_bits - test register for change