diff options
| author | Takashi Iwai <tiwai@suse.de> | 2009-11-06 15:47:50 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-11-06 15:47:50 +0100 |
| commit | 167eae5a17b3cd44a324dbb972c338e489413f54 (patch) | |
| tree | 15019380cbb9b82daca5716a251a41722c9770d0 /sound | |
| parent | 9ad6a46b6497ae64e7fec307deb0de88e6a8ca06 (diff) | |
ALSA: hda - Reset pins of IDT/STAC codecs at free
Some laptops cause annoying clicks or noises at shutdown/reboot since
the speaker pin is set still high. Apply the same procedure used for
the suspend to avoid such clicks/noises for freeing the codec, too.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/pci/hda/patch_sigmatel.c | 42 |
1 files changed, 24 insertions, 18 deletions
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c index 8eb6508cd991..3087705a8e51 100644 --- a/sound/pci/hda/patch_sigmatel.c +++ b/sound/pci/hda/patch_sigmatel.c @@ -4327,6 +4327,28 @@ static void stac92xx_free_kctls(struct hda_codec *codec) snd_array_free(&spec->kctls); } +static void stac92xx_shutup(struct hda_codec *codec) +{ + struct sigmatel_spec *spec = codec->spec; + int i; + hda_nid_t nid; + + /* reset each pin before powering down DAC/ADC to avoid click noise */ + nid = codec->start_nid; + for (i = 0; i < codec->num_nodes; i++, nid++) { + unsigned int wcaps = get_wcaps(codec, nid); + unsigned int wid_type = get_wcaps_type(wcaps); + if (wid_type == AC_WID_PIN) + snd_hda_codec_read(codec, nid, 0, + AC_VERB_SET_PIN_WIDGET_CONTROL, 0); + } + + if (spec->eapd_mask) + stac_gpio_set(codec, spec->gpio_mask, + spec->gpio_dir, spec->gpio_data & + ~spec->eapd_mask); +} + static void stac92xx_free(struct hda_codec *codec) { struct sigmatel_spec *spec = codec->spec; @@ -4334,6 +4356,7 @@ static void stac92xx_free(struct hda_codec *codec) if (! spec) return; + stac92xx_shutup(codec); stac92xx_free_jacks(codec); snd_array_free(&spec->events); @@ -4793,24 +4816,7 @@ static int stac92xx_hp_check_power_status(struct hda_codec *codec, static int stac92xx_suspend(struct hda_codec *codec, pm_message_t state) { - struct sigmatel_spec *spec = codec->spec; - int i; - hda_nid_t nid; - - /* reset each pin before powering down DAC/ADC to avoid click noise */ - nid = codec->start_nid; - for (i = 0; i < codec->num_nodes; i++, nid++) { - unsigned int wcaps = get_wcaps(codec, nid); - unsigned int wid_type = get_wcaps_type(wcaps); - if (wid_type == AC_WID_PIN) - snd_hda_codec_read(codec, nid, 0, - AC_VERB_SET_PIN_WIDGET_CONTROL, 0); - } - - if (spec->eapd_mask) - stac_gpio_set(codec, spec->gpio_mask, - spec->gpio_dir, spec->gpio_data & - ~spec->eapd_mask); + stac92xx_shutup(codec); return 0; } #endif |