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ALSA: hda - Re-add the lost fake mute support

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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>
This commit is contained in:
Takashi Iwai 2015-06-11 10:51:28 +02:00
parent bf06848bdb
commit a686ec4c5f
4 changed files with 34 additions and 2 deletions
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2
include/sound/hda_regmap.h
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@ -9,6 +9,8 @@
#include <sound/core.h>
#include <sound/hdaudio.h>
#define AC_AMP_FAKE_MUTE 0x10 /* fake mute bit set to amp verbs */
int snd_hdac_regmap_init(struct hdac_device *codec);
void snd_hdac_regmap_exit(struct hdac_device *codec);
int snd_hdac_regmap_add_vendor_verb(struct hdac_device *codec,

5
sound/hda/hdac_regmap.c
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@ -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;

25
sound/pci/hda/hda_codec.c
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@ -1375,6 +1375,31 @@ int snd_hda_override_amp_caps(struct hda_codec *codec, hda_nid_t nid, int dir,
}
EXPORT_SYMBOL_GPL(snd_hda_override_amp_caps);
/**
* snd_hda_codec_amp_update - update the AMP mono value
* @codec: HD-audio codec
* @nid: NID to read the AMP value
* @ch: channel to update (0 or 1)
* @dir: #HDA_INPUT or #HDA_OUTPUT
* @idx: the index value (only for input direction)
* @mask: bit mask to set
* @val: the bits value to set
*
* Update the AMP values for the given channel, direction and index.
*/
int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid,
int ch, int dir, int idx, int mask, int val)
{
unsigned int cmd = snd_hdac_regmap_encode_amp(nid, ch, dir, idx);
/* enable fake mute if no h/w mute but min=mute */
if ((query_amp_caps(codec, nid, dir) &
(AC_AMPCAP_MUTE | AC_AMPCAP_MIN_MUTE)) == AC_AMPCAP_MIN_MUTE)
cmd |= AC_AMP_FAKE_MUTE;
return snd_hdac_regmap_update_raw(&codec->core, cmd, mask, val);
}
EXPORT_SYMBOL_GPL(snd_hda_codec_amp_update);
/**
* snd_hda_codec_amp_stereo - update the AMP stereo values
* @codec: HD-audio codec

4
sound/pci/hda/hda_local.h
View File

@ -129,8 +129,8 @@ int snd_hda_mixer_amp_switch_put_beep(struct snd_kcontrol *kcontrol,
/* lowlevel accessor with caching; use carefully */
#define snd_hda_codec_amp_read(codec, nid, ch, dir, idx) \
snd_hdac_regmap_get_amp(&(codec)->core, nid, ch, dir, idx)
#define snd_hda_codec_amp_update(codec, nid, ch, dir, idx, mask, val) \
snd_hdac_regmap_update_amp(&(codec)->core, nid, ch, dir, idx, mask, val)
int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid,
int ch, int dir, int idx, int mask, int val);
int snd_hda_codec_amp_stereo(struct hda_codec *codec, hda_nid_t nid,
int dir, int idx, int mask, int val);
int snd_hda_codec_amp_init(struct hda_codec *codec, hda_nid_t nid, int ch,