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[ALSA] Fix the handling of amp cache in hda-codec
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HDA Codec driver
Fixed the handling of amp cache in hda-codec driver.
The confliction of cache values with different indices should be fixed now.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Takashi Iwai authored and Jaroslav Kysela committed Jun 22, 2005
1 parent 96d0781 commit 4a19fae
Showing 1 changed file with 34 additions and 40 deletions.
74 changes: 34 additions & 40 deletions sound/pci/hda/hda_codec.c
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Original file line number Diff line number Diff line change
Expand Up @@ -566,9 +566,10 @@ void snd_hda_codec_setup_stream(struct hda_codec *codec, hda_nid_t nid, u32 stre
* amp access functions
*/

#define HDA_HASH_KEY(nid,dir,idx) (u32)((nid) + (idx) * 32 + (dir) * 64)
/* FIXME: more better hash key? */
#define HDA_HASH_KEY(nid,dir,idx) (u32)((nid) + ((idx) << 16) + ((dir) << 24))
#define INFO_AMP_CAPS (1<<0)
#define INFO_AMP_VOL (1<<1)
#define INFO_AMP_VOL(ch) (1 << (1 + (ch)))

/* initialize the hash table */
static void init_amp_hash(struct hda_codec *codec)
Expand Down Expand Up @@ -627,28 +628,29 @@ static u32 query_amp_caps(struct hda_codec *codec, hda_nid_t nid, int direction)

/*
* read the current volume to info
* if the cache exists, read from the cache.
* if the cache exists, read the cache value.
*/
static void get_vol_mute(struct hda_codec *codec, struct hda_amp_info *info,
static unsigned int get_vol_mute(struct hda_codec *codec, struct hda_amp_info *info,
hda_nid_t nid, int ch, int direction, int index)
{
u32 val, parm;

if (info->status & (INFO_AMP_VOL << ch))
return;
if (info->status & INFO_AMP_VOL(ch))
return info->vol[ch];

parm = ch ? AC_AMP_GET_RIGHT : AC_AMP_GET_LEFT;
parm |= direction == HDA_OUTPUT ? AC_AMP_GET_OUTPUT : AC_AMP_GET_INPUT;
parm |= index;
val = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_AMP_GAIN_MUTE, parm);
info->vol[ch] = val & 0xff;
info->status |= INFO_AMP_VOL << ch;
info->status |= INFO_AMP_VOL(ch);
return info->vol[ch];
}

/*
* write the current volume in info to the h/w
* write the current volume in info to the h/w and update the cache
*/
static void put_vol_mute(struct hda_codec *codec,
static void put_vol_mute(struct hda_codec *codec, struct hda_amp_info *info,
hda_nid_t nid, int ch, int direction, int index, int val)
{
u32 parm;
Expand All @@ -658,30 +660,34 @@ static void put_vol_mute(struct hda_codec *codec,
parm |= index << AC_AMP_SET_INDEX_SHIFT;
parm |= val;
snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_AMP_GAIN_MUTE, parm);
info->vol[ch] = val;
}

/*
* read/write AMP value. The volume is between 0 to 0x7f, 0x80 = mute bit.
* read AMP value. The volume is between 0 to 0x7f, 0x80 = mute bit.
*/
static int snd_hda_codec_amp_read(struct hda_codec *codec, hda_nid_t nid, int ch, int direction, int index)
{
struct hda_amp_info *info = get_alloc_amp_hash(codec, HDA_HASH_KEY(nid, direction, index));
if (! info)
return 0;
get_vol_mute(codec, info, nid, ch, direction, index);
return info->vol[ch];
return get_vol_mute(codec, info, nid, ch, direction, index);
}

static int snd_hda_codec_amp_write(struct hda_codec *codec, hda_nid_t nid, int ch, int direction, int idx, int val)
/*
* update the AMP value, mask = bit mask to set, val = the value
*/
static int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid, int ch, int direction, int idx, int mask, int val)
{
struct hda_amp_info *info = get_alloc_amp_hash(codec, HDA_HASH_KEY(nid, direction, idx));

if (! info)
return 0;
get_vol_mute(codec, info, nid, ch, direction, idx);
val &= mask;
val |= get_vol_mute(codec, info, nid, ch, direction, idx) & ~mask;
if (info->vol[ch] == val && ! codec->in_resume)
return 0;
put_vol_mute(codec, nid, ch, direction, idx, val);
info->vol[ch] = val;
put_vol_mute(codec, info, nid, ch, direction, idx, val);
return 1;
}

Expand Down Expand Up @@ -740,21 +746,15 @@ int snd_hda_mixer_amp_volume_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t
int chs = get_amp_channels(kcontrol);
int dir = get_amp_direction(kcontrol);
int idx = get_amp_index(kcontrol);
int val;
long *valp = ucontrol->value.integer.value;
int change = 0;

if (chs & 1) {
val = *valp & 0x7f;
val |= snd_hda_codec_amp_read(codec, nid, 0, dir, idx) & 0x80;
change = snd_hda_codec_amp_write(codec, nid, 0, dir, idx, val);
valp++;
}
if (chs & 2) {
val = *valp & 0x7f;
val |= snd_hda_codec_amp_read(codec, nid, 1, dir, idx) & 0x80;
change |= snd_hda_codec_amp_write(codec, nid, 1, dir, idx, val);
}
if (chs & 1)
change = snd_hda_codec_amp_update(codec, nid, 0, dir, idx,
0x7f, *valp);
if (chs & 2)
change |= snd_hda_codec_amp_update(codec, nid, 1, dir, idx,
0x7f, valp[1]);
return change;
}

Expand Down Expand Up @@ -793,21 +793,15 @@ int snd_hda_mixer_amp_switch_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t
int chs = get_amp_channels(kcontrol);
int dir = get_amp_direction(kcontrol);
int idx = get_amp_index(kcontrol);
int val;
long *valp = ucontrol->value.integer.value;
int change = 0;

if (chs & 1) {
val = snd_hda_codec_amp_read(codec, nid, 0, dir, idx) & 0x7f;
val |= *valp ? 0 : 0x80;
change = snd_hda_codec_amp_write(codec, nid, 0, dir, idx, val);
valp++;
}
if (chs & 2) {
val = snd_hda_codec_amp_read(codec, nid, 1, dir, idx) & 0x7f;
val |= *valp ? 0 : 0x80;
change = snd_hda_codec_amp_write(codec, nid, 1, dir, idx, val);
}
if (chs & 1)
change = snd_hda_codec_amp_update(codec, nid, 0, dir, idx,
0x80, *valp ? 0 : 0x80);
if (chs & 2)
change |= snd_hda_codec_amp_update(codec, nid, 1, dir, idx,
0x80, valp[1] ? 0 : 0x80);
return change;
}

Expand Down

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