diff options
| -rw-r--r-- | sound/pci/hda/hda_codec.c | 71 | ||||
| -rw-r--r-- | sound/pci/hda/hda_local.h | 4 |
2 files changed, 56 insertions, 19 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 2f890af..0037147 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -1765,7 +1765,7 @@ EXPORT_SYMBOL_HDA(snd_hda_override_pin_caps); */ static struct hda_amp_info * update_amp_hash(struct hda_codec *codec, hda_nid_t nid, int ch, - int direction, int index) + int direction, int index, bool init_only) { struct hda_amp_info *info; unsigned int parm, val = 0; @@ -1791,7 +1791,8 @@ update_amp_hash(struct hda_codec *codec, hda_nid_t nid, int ch, } info->vol[ch] = val; info->head.val |= INFO_AMP_VOL(ch); - } + } else if (init_only) + return NULL; return info; } @@ -1832,7 +1833,7 @@ int snd_hda_codec_amp_read(struct hda_codec *codec, hda_nid_t nid, int ch, unsigned int val = 0; mutex_lock(&codec->hash_mutex); - info = update_amp_hash(codec, nid, ch, direction, index); + info = update_amp_hash(codec, nid, ch, direction, index, false); if (info) val = info->vol[ch]; mutex_unlock(&codec->hash_mutex); @@ -1840,21 +1841,9 @@ int snd_hda_codec_amp_read(struct hda_codec *codec, hda_nid_t nid, int ch, } EXPORT_SYMBOL_HDA(snd_hda_codec_amp_read); -/** - * snd_hda_codec_amp_update - update the AMP value - * @codec: HD-audio codec - * @nid: NID to read the AMP value - * @ch: channel (left=0 or right=1) - * @direction: #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 value with a bit mask. - * Returns 0 if the value is unchanged, 1 if changed. - */ -int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid, int ch, - int direction, int idx, int mask, int val) +static int codec_amp_update(struct hda_codec *codec, hda_nid_t nid, int ch, + int direction, int idx, int mask, int val, + bool init_only) { struct hda_amp_info *info; @@ -1863,7 +1852,7 @@ int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid, int ch, val &= mask; mutex_lock(&codec->hash_mutex); - info = update_amp_hash(codec, nid, ch, direction, idx); + info = update_amp_hash(codec, nid, ch, direction, idx, init_only); if (!info) { mutex_unlock(&codec->hash_mutex); return 0; @@ -1881,6 +1870,25 @@ int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid, int ch, put_vol_mute(codec, info, nid, ch, direction, idx, val); return 1; } + +/** + * snd_hda_codec_amp_update - update the AMP value + * @codec: HD-audio codec + * @nid: NID to read the AMP value + * @ch: channel (left=0 or right=1) + * @direction: #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 value with a bit mask. + * Returns 0 if the value is unchanged, 1 if changed. + */ +int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid, int ch, + int direction, int idx, int mask, int val) +{ + return codec_amp_update(codec, nid, ch, direction, idx, mask, val, false); +} EXPORT_SYMBOL_HDA(snd_hda_codec_amp_update); /** @@ -1909,6 +1917,31 @@ int snd_hda_codec_amp_stereo(struct hda_codec *codec, hda_nid_t nid, } EXPORT_SYMBOL_HDA(snd_hda_codec_amp_stereo); +/* Works like snd_hda_codec_amp_update() but it writes the value only at + * the first access. If the amp was already initialized / updated beforehand, + * this does nothing. + */ +int snd_hda_codec_amp_init(struct hda_codec *codec, hda_nid_t nid, int ch, + int dir, int idx, int mask, int val) +{ + return codec_amp_update(codec, nid, ch, dir, idx, mask, val, true); +} +EXPORT_SYMBOL_HDA(snd_hda_codec_amp_init); + +int snd_hda_codec_amp_init_stereo(struct hda_codec *codec, hda_nid_t nid, + int dir, int idx, int mask, int val) +{ + int ch, ret = 0; + + if (snd_BUG_ON(mask & ~0xff)) + mask &= 0xff; + for (ch = 0; ch < 2; ch++) + ret |= snd_hda_codec_amp_init(codec, nid, ch, dir, + idx, mask, val); + return ret; +} +EXPORT_SYMBOL_HDA(snd_hda_codec_amp_init_stereo); + /** * snd_hda_codec_resume_amp - Resume all AMP commands from the cache * @codec: HD-audio codec diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h index f765296..e38519b 100644 --- a/sound/pci/hda/hda_local.h +++ b/sound/pci/hda/hda_local.h @@ -133,6 +133,10 @@ int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid, int ch, int direction, 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, + int direction, int idx, int mask, int val); +int snd_hda_codec_amp_init_stereo(struct hda_codec *codec, hda_nid_t nid, + int dir, int idx, int mask, int val); void snd_hda_codec_resume_amp(struct hda_codec *codec); void snd_hda_set_vmaster_tlv(struct hda_codec *codec, hda_nid_t nid, int dir, |