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authorTakashi Iwai <tiwai@suse.de>2012-05-15 09:11:36 +0200
committerTakashi Iwai <tiwai@suse.de>2012-05-15 09:12:12 +0200
commitc882246d840073a3dd0533ca164dfcbd7f6bd207 (patch)
treea9a2f79462fd8bdebf16d09aa2955b07ea520cbf /sound/pci
parentbfc89dec97a3db0f14393a86b2fc3d8e13b33c86 (diff)
downloadlinux-c882246d840073a3dd0533ca164dfcbd7f6bd207.tar.bz2
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.c21
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,