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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-12-18 17:48:45 +0000 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-12-18 20:31:01 +0100 |
| commit | a08d56583f6b87e2981d1b6e9ee891bdc741cc44 (patch) | |
| tree | 4fdc8eeaee76f0bb4d7f78b1e3d36717142ab28c /sound/arm/aaci.c | |
| parent | d3aee7996c30f928bbbbfd0994148e35d2e83084 (diff) | |
| download | lwn-a08d56583f6b87e2981d1b6e9ee891bdc741cc44.tar.gz lwn-a08d56583f6b87e2981d1b6e9ee891bdc741cc44.zip | |
ALSA: AACI: add double-rate support
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/arm/aaci.c')
| -rw-r--r-- | sound/arm/aaci.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/sound/arm/aaci.c b/sound/arm/aaci.c index b88bbded2f4f..b377370af2d7 100644 --- a/sound/arm/aaci.c +++ b/sound/arm/aaci.c @@ -366,6 +366,10 @@ static int __aaci_pcm_open(struct aaci *aaci, runtime->hw.rates = aacirun->pcm->rates; snd_pcm_limit_hw_rates(runtime); + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && + aacirun->pcm->r[1].slots) + snd_ac97_pcm_double_rate_rules(runtime); + /* * FIXME: ALSA specifies fifo_size in bytes. If we're in normal * mode, each 32-bit word contains one sample. If we're in @@ -439,9 +443,12 @@ static int aaci_pcm_hw_params(struct snd_pcm_substream *substream, err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params)); if (err >= 0) { - err = snd_ac97_pcm_open(aacirun->pcm, params_rate(params), + unsigned int rate = params_rate(params); + int dbl = rate > 48000; + + err = snd_ac97_pcm_open(aacirun->pcm, rate, params_channels(params), - aacirun->pcm->r[0].slots); + aacirun->pcm->r[dbl].slots); aacirun->pcm_open = err == 0; aacirun->cr = CR_FEN | CR_COMPACT | CR_SZ16; @@ -808,6 +815,12 @@ static struct ac97_pcm ac97_defs[] __devinitdata = { (1 << AC97_SLOT_PCM_SRIGHT) | (1 << AC97_SLOT_LFE), }, + [1] = { + .slots = (1 << AC97_SLOT_PCM_LEFT) | + (1 << AC97_SLOT_PCM_RIGHT) | + (1 << AC97_SLOT_PCM_LEFT_0) | + (1 << AC97_SLOT_PCM_RIGHT_0), + }, }, }, [1] = { /* PCM in */ |