diff options
Diffstat (limited to 'sound/soc/soc-core.c')
| -rw-r--r-- | sound/soc/soc-core.c | 49 |
1 files changed, 43 insertions, 6 deletions
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 0a6440c6f54a..a03bac943aaf 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 |