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authorTakashi Iwai <tiwai@suse.de>2015-06-11 11:51:28 +0300
committerTakashi Iwai <tiwai@suse.de>2015-06-11 12:55:48 +0300
commita686ec4c5f28eb1b384e4b87b08543155c970072 (patch)
treed35a87067360948ffad9e2dae8cfeb9d97d5925e /sound/hda
parentbf06848bdbe549175d25d2327ab9f37d4bd556b7 (diff)
downloadlinux-a686ec4c5f28eb1b384e4b87b08543155c970072.tar.xz
ALSA: hda - Re-add the lost fake mute support
Yet another regression by the transition to regmap cache; for better usability, we had the fake mute control using the zero amp value for Conexant codecs, and this was forgotten in the new hda core code. Since the bits 4-7 are unused for the amp registers (as we follow the syntax of AMP_GET verb), the bit 4 is now used to indicate the fake mute. For setting this flag, snd_hda_codec_amp_update() becomes a function from a simple macro. The bonus is that it gained a proper function description. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/hda')
-rw-r--r--sound/hda/hdac_regmap.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/sound/hda/hdac_regmap.c b/sound/hda/hdac_regmap.c
index c4f5e61d4404..1eabcdf69457 100644
--- a/sound/hda/hdac_regmap.c
+++ b/sound/hda/hdac_regmap.c
@@ -246,6 +246,9 @@ static int hda_reg_read(void *context, unsigned int reg, unsigned int *val)
return hda_reg_read_stereo_amp(codec, reg, val);
if (verb == AC_VERB_GET_PROC_COEF)
return hda_reg_read_coef(codec, reg, val);
+ if ((verb & 0x700) == AC_VERB_SET_AMP_GAIN_MUTE)
+ reg &= ~AC_AMP_FAKE_MUTE;
+
err = snd_hdac_exec_verb(codec, reg, 0, val);
if (err < 0)
return err;
@@ -283,6 +286,8 @@ static int hda_reg_write(void *context, unsigned int reg, unsigned int val)
switch (verb & 0xf00) {
case AC_VERB_SET_AMP_GAIN_MUTE:
+ if ((reg & AC_AMP_FAKE_MUTE) && (val & AC_AMP_MUTE))
+ val = 0;
verb = AC_VERB_SET_AMP_GAIN_MUTE;
if (reg & AC_AMP_GET_LEFT)
verb |= AC_AMP_SET_LEFT >> 8;