At Mon, 4 Aug 2008 11:46:28 -0500, george pee wrote: > > I have a wireless tablet (webdt310) > http://dtresearch.com/product/wt310/index.htm > > It has cs5536 audio and a realtek alc203 codec. > > The headphone jack works perfectly, but the internal speaker was not. > > After a bit a twiddling and reading the ALC203 data sheet, I finally figured > out that the function of Pin 37 had to be changed to MONO-OUT to get sound > out of the > internal speaker. > > I'm not sure that this is the best approach (maybe there could be some pin > sensing?) > but I added this as an ac97 quirk. Here's the patch. I prefer this kind of change with ac97->patch(). How about the patch below (untested)? thanks, Takashi --- diff --git a/sound/pci/ac97/ac97_codec.c b/sound/pci/ac97/ac97_codec.c index f6a7d72..171559c 100644 --- a/sound/pci/ac97/ac97_codec.c +++ b/sound/pci/ac97/ac97_codec.c @@ -122,7 +122,7 @@ static const struct ac97_codec_id snd_ac97_codec_ids[] = { { 0x414c4740, 0xfffffff0, "ALC202", NULL, NULL }, { 0x414c4750, 0xfffffff0, "ALC250", NULL, NULL }, { 0x414c4760, 0xfffffff0, "ALC655", patch_alc655, NULL }, -{ 0x414c4770, 0xfffffff0, "ALC203", NULL, NULL }, +{ 0x414c4770, 0xfffffff0, "ALC203", patch_alc203, NULL }, { 0x414c4781, 0xffffffff, "ALC658D", NULL, NULL }, /* already patched */ { 0x414c4780, 0xfffffff0, "ALC658", patch_alc655, NULL }, { 0x414c4790, 0xfffffff0, "ALC850", patch_alc850, NULL }, diff --git a/sound/pci/ac97/ac97_patch.c b/sound/pci/ac97/ac97_patch.c index f4fbc79..bb028f8 100644 --- a/sound/pci/ac97/ac97_patch.c +++ b/sound/pci/ac97/ac97_patch.c @@ -2560,6 +2560,14 @@ static int patch_ad1986(struct snd_ac97 * ac97) return 0; } +/* + * realtek ALC203: use mono-out for pin 37 + */ +static int patch_alc203(struct snd_ac97 *ac97) +{ + snd_ac97_update_bits(ac97, 0x7a, 0x400, 0x400); + return 0; +} /* * realtek ALC65x/850 codecs _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
