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ALSA: AACI: add double-rate support

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Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Russell King 2009-12-18 17:48:45 +00:00 committed by Takashi Iwai
parent d3aee7996c
commit a08d56583f
1 changed files with 15 additions and 2 deletions
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17
sound/arm/aaci.c
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@ -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 */