a7y18lte-ubports/android_kernel_samsung_universal7885
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Merge branch 'topic/msbits' into for-next

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This commit is contained in:
Takashi Iwai 2014-12-30 16:40:46 +01:00
commit 614acf93dc
2 changed files with 17 additions and 22 deletions
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15
sound/core/pcm_lib.c
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@ -1299,8 +1299,14 @@ static int snd_pcm_hw_rule_msbits(struct snd_pcm_hw_params *params,
int width = l & 0xffff; int width = l & 0xffff;
unsigned int msbits = l >> 16; unsigned int msbits = l >> 16;
struct snd_interval *i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS); struct snd_interval *i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS);
if (snd_interval_single(i) && snd_interval_value(i) == width)
params->msbits = msbits; if (!snd_interval_single(i))
return 0;
if ((snd_interval_value(i) == width) ||
(width == 0 && snd_interval_value(i) > msbits))
params->msbits = min_not_zero(params->msbits, msbits);
return 0; return 0;
} }
@ -1311,6 +1317,11 @@ static int snd_pcm_hw_rule_msbits(struct snd_pcm_hw_params *params,
* @width: sample bits width * @width: sample bits width
* @msbits: msbits width * @msbits: msbits width
* *
* This constraint will set the number of most significant bits (msbits) if a
* sample format with the specified width has been select. If width is set to 0
* the msbits will be set for any sample format with a width larger than the
* specified msbits.
*
* Return: Zero if successful, or a negative error code on failure. * Return: Zero if successful, or a negative error code on failure.
*/ */
int snd_pcm_hw_constraint_msbits(struct snd_pcm_runtime *runtime, int snd_pcm_hw_constraint_msbits(struct snd_pcm_runtime *runtime,

24
sound/soc/soc-pcm.c
View File

@ -301,15 +301,6 @@ static bool soc_pcm_has_symmetry(struct snd_pcm_substream *substream)
return symmetry; return symmetry;
} }
/*
* List of sample sizes that might go over the bus for parameter
* application. There ought to be a wildcard sample size for things
* like the DAC/ADC resolution to use but there isn't right now.
*/
static int sample_sizes[] = {
24, 32,
};
static void soc_pcm_set_msb(struct snd_pcm_substream *substream, int bits) static void soc_pcm_set_msb(struct snd_pcm_substream *substream, int bits)
{ {
struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_pcm_runtime *rtd = substream->private_data;
@ -318,17 +309,10 @@ static void soc_pcm_set_msb(struct snd_pcm_substream *substream, int bits)
if (!bits) if (!bits)
return; return;
for (i = 0; i < ARRAY_SIZE(sample_sizes); i++) { ret = snd_pcm_hw_constraint_msbits(substream->runtime, 0, 0, bits);
if (bits >= sample_sizes[i]) if (ret != 0)
continue; dev_warn(rtd->dev, "ASoC: Failed to set MSB %d: %d\n",
bits, ret);
ret = snd_pcm_hw_constraint_msbits(substream->runtime, 0,
sample_sizes[i], bits);
if (ret != 0)
dev_warn(rtd->dev,
"ASoC: Failed to set MSB %d/%d: %d\n",
bits, sample_sizes[i], ret);
}
} }
static void soc_pcm_apply_msb(struct snd_pcm_substream *substream) static void soc_pcm_apply_msb(struct snd_pcm_substream *substream)