diff options
| author | Takashi Iwai <tiwai@suse.de> | 2012-05-15 09:11:36 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-05-15 09:12:12 +0200 |
| commit | c882246d840073a3dd0533ca164dfcbd7f6bd207 (patch) | |
| tree | a9a2f79462fd8bdebf16d09aa2955b07ea520cbf /sound/pci | |
| parent | bfc89dec97a3db0f14393a86b2fc3d8e13b33c86 (diff) | |
ALSA: hda/idt - Cache the power-map bits
For avoiding unnecessary codec read/write verbs at each jack detection.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
| -rw-r--r-- | sound/pci/hda/patch_sigmatel.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c index 1f6f5202e7b1..7db8228f1b88 100644 --- a/sound/pci/hda/patch_sigmatel.c +++ b/sound/pci/hda/patch_sigmatel.c @@ -222,6 +222,7 @@ struct sigmatel_spec { unsigned char aloopback_shift; /* power management */ + unsigned int power_map_bits; unsigned int num_pwrs; const hda_nid_t *pwr_nids; const hda_nid_t *dac_list; @@ -315,6 +316,9 @@ struct sigmatel_spec { struct hda_vmaster_mute_hook vmaster_mute; }; +#define AC_VERB_IDT_SET_POWER_MAP 0x7ec +#define AC_VERB_IDT_GET_POWER_MAP 0xfec + static const hda_nid_t stac9200_adc_nids[1] = { 0x03, }; @@ -4406,6 +4410,12 @@ static int stac92xx_init(struct hda_codec *codec) /* sync mute LED */ snd_hda_sync_vmaster_hook(&spec->vmaster_mute); + + /* sync the power-map */ + if (spec->num_pwrs) + snd_hda_codec_write(codec, codec->afg, 0, + AC_VERB_IDT_SET_POWER_MAP, + spec->power_map_bits); if (spec->dac_list) stac92xx_power_down(codec); return 0; @@ -4651,14 +4661,18 @@ static void stac_toggle_power_map(struct hda_codec *codec, hda_nid_t nid, idx = 1 << idx; - val = snd_hda_codec_read(codec, codec->afg, 0, 0x0fec, 0x0) & 0xff; + val = spec->power_map_bits; if (enable) val &= ~idx; else val |= idx; /* power down unused output ports */ - snd_hda_codec_write(codec, codec->afg, 0, 0x7ec, val); + if (val != spec->power_map_bits) { + spec->power_map_bits = val; + snd_hda_codec_write(codec, codec->afg, 0, + AC_VERB_IDT_SET_POWER_MAP, val); + } } static void stac92xx_pin_sense(struct hda_codec *codec, hda_nid_t nid) @@ -4926,7 +4940,8 @@ static void stac92hd_proc_hook(struct snd_info_buffer *buffer, { if (nid == codec->afg) snd_iprintf(buffer, "Power-Map: 0x%02x\n", - snd_hda_codec_read(codec, nid, 0, 0x0fec, 0x0)); + snd_hda_codec_read(codec, nid, 0, + AC_VERB_IDT_GET_POWER_MAP, 0)); } static void analog_loop_proc_hook(struct snd_info_buffer *buffer, |