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[ALSA] ac97 - Added a codec patch for LM4550

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Modules: AC97 Codec

Added a codec patch for LM4550.  It sets up a static volume resolution
table.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Charl Coetzee 2006-02-09 11:48:21 +01:00 committed by Jaroslav Kysela
parent 50dabc2d11
commit ba22429d3e
3 changed files with 33 additions and 1 deletions
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2
sound/pci/ac97/ac97_codec.c
View File

@ -150,7 +150,7 @@ static const struct ac97_codec_id snd_ac97_codec_ids[] = {
{ 0x49544561, 0xffffffff, "IT2646E", patch_it2646, NULL },
{ 0x4e534300, 0xffffffff, "LM4540,43,45,46,48", NULL, NULL }, // only guess --jk
{ 0x4e534331, 0xffffffff, "LM4549", NULL, NULL },
{ 0x4e534350, 0xffffffff, "LM4550", NULL, NULL },
{ 0x4e534350, 0xffffffff, "LM4550", patch_lm4550, NULL }, // volume wrap fix
{ 0x50534304, 0xffffffff, "UCB1400", NULL, NULL },
{ 0x53494c20, 0xffffffe0, "Si3036,8", mpatch_si3036, mpatch_si3036, AC97_MODEM_PATCH },
{ 0x54524102, 0xffffffff, "TR28022", NULL, NULL },

31
sound/pci/ac97/ac97_patch.c
View File

@ -2825,3 +2825,34 @@ int mpatch_si3036(struct snd_ac97 * ac97)
snd_ac97_write_cache(ac97, 0x68, 0);
return 0;
}
/*
* LM 4550 Codec
*
* We use a static resolution table since LM4550 codec cannot be
* properly autoprobed to determine the resolution via
* check_volume_resolution().
*/
static struct snd_ac97_res_table lm4550_restbl[] = {
{ AC97_MASTER, 0x1f1f },
{ AC97_HEADPHONE, 0x1f1f },
{ AC97_MASTER_MONO, 0x001f },
{ AC97_PC_BEEP, 0x001f }, /* LSB is ignored */
{ AC97_PHONE, 0x001f },
{ AC97_PHONE, 0x001f },
{ AC97_MIC, 0x001f },
{ AC97_LINE, 0x1f1f },
{ AC97_CD, 0x1f1f },
{ AC97_VIDEO, 0x1f1f },
{ AC97_AUX, 0x1f1f },
{ AC97_PCM, 0x1f1f },
{ AC97_REC_GAIN, 0x0f0f },
{ } /* terminator */
};
int patch_lm4550(struct snd_ac97 *ac97)
{
ac97->res_table = lm4550_restbl;
return 0;
}

1
sound/pci/ac97/ac97_patch.h
View File

@ -59,3 +59,4 @@ int patch_vt1616(struct snd_ac97 * ac97);
int patch_vt1617a(struct snd_ac97 * ac97);
int patch_it2646(struct snd_ac97 * ac97);
int mpatch_si3036(struct snd_ac97 * ac97);
int patch_lm4550(struct snd_ac97 * ac97);