[alsa-devel] ASoC: WM8804: fsi-wm8804
broonie at opensource.wolfsonmicro.com
Mon Nov 15 13:33:51 CET 2010
On Mon, Nov 15, 2010 at 01:26:37PM +0100, Grzegorz Daniluk wrote:
> I'm trying to use the wm8804 codec in my SH4-based system (Renesas
> SH7724 to be precise). I have used the latest kernel 2.6.37-rc1 where
> there is the codec driver for wm8804. However, I have to write my own
> fsi-wm8804.c (like e.g. fsi-da7210.c). My code attached below. After
> compiling it with the rest of the kernel sources or compiling as an
> external module my alsa still does not see any soundcards. However, by
> running i2cdetect I can see that the device is correctly taken by the
> codec driver so the problem is somewhere with my fsi-wm8804 probably.
Did you register the I2C device for the CODEC with the I2C subsystem?
If that's not the issue could you please provide a kernel log with
#define DEBUG at the top of soc-core.c?
> static int fsi_wm8804_init(struct snd_soc_codec *codec)
> return 0;
Remove unused functions.
> if(substream->stream == SNDRV_PCM_STREAM_CAPTURE)
> snd_soc_dai_set_pll(dai, 0, 0, 12000000, 94310400);
> else if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
> snd_soc_dai_set_pll(dai, 0, 0, 12000000, 98304000);
This is going to prevent simultaneous playback and record; this may not
be an issue in your system but I wanted to be sure you were aware of it.
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