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| author | Takashi Iwai <tiwai@suse.de> | 2009-12-27 11:18:59 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-12-27 13:39:14 +0100 |
| commit | 92ee6162c48fab24f0676969f0f147fc12f8f21c (patch) | |
| tree | 631e0b20ad7d7aa4ce43719fbb3cc7ddfcbe2255 /sound | |
| parent | 043958e602ac2cbf918c0dab1e4e2a7f9751ebf6 (diff) | |
| download | linux-92ee6162c48fab24f0676969f0f147fc12f8f21c.tar.gz linux-92ee6162c48fab24f0676969f0f147fc12f8f21c.tar.bz2 linux-92ee6162c48fab24f0676969f0f147fc12f8f21c.zip | |
ALSA: hda - Add snd_hda_shutup_pins() helper function
Add a common helper function for clearing pin controls before suspend.
Use the pincfg array instead of looking through all widget tree.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/pci/hda/hda_codec.c | 19 | ||||
| -rw-r--r-- | sound/pci/hda/hda_codec.h | 1 | ||||
| -rw-r--r-- | sound/pci/hda/patch_sigmatel.c | 12 |
3 files changed, 21 insertions, 11 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index b3554df740ff..94ae69f20925 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -899,6 +899,25 @@ static void restore_pincfgs(struct hda_codec *codec) } } +/** + * snd_hda_shutup_pins - Shut up all pins + * @codec: the HDA codec + * + * Clear all pin controls to shup up before suspend for avoiding click noise. + * The controls aren't cached so that they can be resumed properly. + */ +void snd_hda_shutup_pins(struct hda_codec *codec) +{ + int i; + for (i = 0; i < codec->init_pins.used; i++) { + struct hda_pincfg *pin = snd_array_elem(&codec->init_pins, i); + /* use read here for syncing after issuing each verb */ + snd_hda_codec_read(codec, pin->nid, 0, + AC_VERB_SET_PIN_WIDGET_CONTROL, 0); + } +} +EXPORT_SYMBOL_HDA(snd_hda_shutup_pins); + static void init_hda_cache(struct hda_cache_rec *cache, unsigned int record_size); static void free_hda_cache(struct hda_cache_rec *cache); diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h index 0d08ad5bd898..11c4aa8ee996 100644 --- a/sound/pci/hda/hda_codec.h +++ b/sound/pci/hda/hda_codec.h @@ -898,6 +898,7 @@ int snd_hda_codec_set_pincfg(struct hda_codec *codec, hda_nid_t nid, unsigned int cfg); int snd_hda_add_pincfg(struct hda_codec *codec, struct snd_array *list, hda_nid_t nid, unsigned int cfg); /* for hwdep */ +void snd_hda_shutup_pins(struct hda_codec *codec); /* * Mixer diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c index 69dd5a4e52f2..dc1d9f124578 100644 --- a/sound/pci/hda/patch_sigmatel.c +++ b/sound/pci/hda/patch_sigmatel.c @@ -4385,18 +4385,8 @@ static void stac92xx_free_kctls(struct hda_codec *codec) 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); - } + snd_hda_shutup_pins(codec); if (spec->eapd_mask) stac_gpio_set(codec, spec->gpio_mask, |