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intel_sst: MRST can only do 16bit recording

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Fix bug

	$ arecord -D dsnoop -r 48000 -f S16_LE 1.wav
	ALSA lib pcm_direct.c:980:(snd1_pcm_direct_initialize_slave) unable to install hw params
	ALSA lib pcm_dsnoop.c:604:(snd_pcm_dsnoop_open) unable to initialize slave
	arecord: main:654: audio open error: Interrupted system call

Root cause is, the driver is reporting 32-bit capture capability
that is not supported by the MRST hardware. So the dsnoop plugin
end up requesting 32-bit capture which fails.

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Wu Fengguang 2011-05-03 17:35:31 +01:00 committed by Greg Kroah-Hartman
parent 3ca13bdb3c
commit a482050294
1 changed files with 4 additions and 1 deletions
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5
drivers/staging/intel_sst/intelmid.c
View file

@ -339,8 +339,11 @@ static int snd_intelmad_open(struct snd_pcm_substream *substream,
/*
* MRST firmware currently denies stereo recording requests.
*/
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
runtime->hw.formats = (SNDRV_PCM_FMTBIT_S16 |
SNDRV_PCM_FMTBIT_U16);
runtime->hw.channels_max = 1;
}
}
if (intelmaddata->cpu_id == CPU_CHIP_PENWELL) {
runtime->hw = snd_intelmad_stream;