diff options
| author | Matthew Ranostay <mranostay@embeddedalley.com> | 2008-02-06 14:49:44 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2008-04-24 12:00:08 +0200 |
| commit | b76c850fbc280d6c0ff786653915f3a9700b5912 (patch) | |
| tree | eaa06927fd12eba1c13f2506bf026c46144a4edd /sound/pci/hda | |
| parent | d043143d803ad9a9f4a66d6a833876735fb7b869 (diff) | |
[ALSA] hda: STAC927x power down inactive DACs
On several laptops that have STAC9228 codecs have unused DACs,
this powers them down to a D3 state.
Signed-off-by: Matthew Ranostay <mranostay@embeddedalley.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda')
| -rw-r--r-- | sound/pci/hda/patch_sigmatel.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c index f693011d25a..7f506ef0acc 100644 --- a/sound/pci/hda/patch_sigmatel.c +++ b/sound/pci/hda/patch_sigmatel.c @@ -136,6 +136,7 @@ struct sigmatel_spec { /* power management */ unsigned int num_pwrs; hda_nid_t *pwr_nids; + hda_nid_t *dac_list; /* playback */ struct hda_input_mux *mono_mux; @@ -291,6 +292,10 @@ static hda_nid_t stac927x_mux_nids[3] = { 0x15, 0x16, 0x17 }; +static hda_nid_t stac927x_dac_nids[6] = { + 0x02, 0x03, 0x04, 0x05, 0x06, 0 +}; + static hda_nid_t stac927x_dmux_nids[1] = { 0x1b, }; @@ -2877,6 +2882,18 @@ static int is_nid_hp_pin(struct auto_pin_cfg *cfg, hda_nid_t nid) return 0; /* nid is not a HP-Out */ }; +static void stac92xx_power_down(struct hda_codec *codec) +{ + struct sigmatel_spec *spec = codec->spec; + + /* power down inactive DACs */ + hda_nid_t *dac; + for (dac = spec->dac_list; *dac; dac++) + if (!is_in_dac_nids(spec, *dac)) + snd_hda_codec_write_cache(codec, *dac, 0, + AC_VERB_SET_POWER_STATE, AC_PWRST_D3); +} + static int stac92xx_init(struct hda_codec *codec) { struct sigmatel_spec *spec = codec->spec; @@ -2929,7 +2946,8 @@ static int stac92xx_init(struct hda_codec *codec) enable_pin_detect(codec, spec->pwr_nids[i], event | i); codec->patch_ops.unsol_event(codec, (event | i) << 26); } - + if (spec->dac_list) + stac92xx_power_down(codec); if (cfg->dig_out_pin) stac92xx_auto_set_pinctl(codec, cfg->dig_out_pin, AC_PINCTL_OUT_EN); @@ -3102,6 +3120,9 @@ static int stac92xx_resume(struct hda_codec *codec) spec->gpio_dir, spec->gpio_data); snd_hda_codec_resume_amp(codec); snd_hda_codec_resume_cache(codec); + /* power down inactive DACs */ + if (spec->dac_list) + stac92xx_power_down(codec); /* invoke unsolicited event to reset the HP state */ if (spec->hp_detect) codec->patch_ops.unsol_event(codec, STAC_HP_EVENT << 26); @@ -3589,6 +3610,7 @@ static int patch_stac927x(struct hda_codec *codec) spec->num_adcs = ARRAY_SIZE(stac927x_adc_nids); spec->mux_nids = stac927x_mux_nids; spec->num_muxes = ARRAY_SIZE(stac927x_mux_nids); + spec->dac_list = stac927x_dac_nids; spec->multiout.dac_nids = spec->dac_nids; switch (spec->board_config) { |