diff options
| author | Wu Fengguang <wfg@linux.intel.com> | 2011-05-03 17:35:19 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-05-10 12:58:43 -0700 |
| commit | 3ca13bdb3c79e8a5e79ddeddacdae3bd4611ab5d (patch) | |
| tree | 956c2b211787e3bd12583a30a1f4f30bdd9d340d /drivers/staging/intel_sst/intelmid.c | |
| parent | f2b5ea1feb904d483a8cf901562e314988ecc314 (diff) | |
intel_sst: MRST can only do mono recording
Fix bug
$ arecord -Dplughw -c2
Recording WAVE 'stdin' : Unsigned 8 bit, Rate 8000 Hz, Stereo
arecord: set_params:1116: Unable to install hw params:
ACCESS: RW_INTERLEAVED
FORMAT: U8
SUBFORMAT: STD
SAMPLE_BITS: 8
FRAME_BITS: 16
CHANNELS: 2
[...]
Root cause is, the driver is reporting 2-channel capture capability
that is not supported by the MRST hardware. So the plughw plugin
end up requesting 2-channel 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>
Diffstat (limited to 'drivers/staging/intel_sst/intelmid.c')
| -rw-r--r-- | drivers/staging/intel_sst/intelmid.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/staging/intel_sst/intelmid.c b/drivers/staging/intel_sst/intelmid.c index 61ef4a69216f..0b9b1b64c9c4 100644 --- a/drivers/staging/intel_sst/intelmid.c +++ b/drivers/staging/intel_sst/intelmid.c @@ -335,6 +335,13 @@ static int snd_intelmad_open(struct snd_pcm_substream *substream, runtime = substream->runtime; /* set the runtime hw parameter with local snd_pcm_hardware struct */ runtime->hw = snd_intelmad_stream; + if (intelmaddata->cpu_id == CPU_CHIP_LINCROFT) { + /* + * MRST firmware currently denies stereo recording requests. + */ + if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) + runtime->hw.channels_max = 1; + } if (intelmaddata->cpu_id == CPU_CHIP_PENWELL) { runtime->hw = snd_intelmad_stream; runtime->hw.rates = SNDRV_PCM_RATE_48000; |