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ALSA: hda - Fix EAPD GPIO control for Sigmatel codecs

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The EAPD GPIO is dynamically turned on/off for some machines with
Sigmatel codecs, but this didn't work as expected, and it resulted in
spontaneous lost of speaker outputs per HP plugging or power-saving.

This patch fixes the bug by simply including spec->eapd_mask into
spec->gpio_mask and spec->gpio_data bits.

Reported-and-tested-by: Eric Shattow <lucent@gmail.com>
Cc: <stable@vger.kernel.org> [v3.9+]
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2013-07-19 07:58:02 +02:00
parent 256ca9c3ad
commit 1ea9a69d1a
1 changed files with 6 additions and 5 deletions
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11
sound/pci/hda/patch_sigmatel.c
View File

@ -417,9 +417,11 @@ static void stac_update_outputs(struct hda_codec *codec)
val &= ~spec->eapd_mask;
else
val |= spec->eapd_mask;
if (spec->gpio_data != val)
if (spec->gpio_data != val) {
spec->gpio_data = val;
stac_gpio_set(codec, spec->gpio_mask, spec->gpio_dir,
val);
}
}
}
@ -3612,20 +3614,18 @@ static int stac_parse_auto_config(struct hda_codec *codec)
static int stac_init(struct hda_codec *codec)
{
struct sigmatel_spec *spec = codec->spec;
unsigned int gpio;
int i;
/* override some hints */
stac_store_hints(codec);
/* set up GPIO */
gpio = spec->gpio_data;
/* turn on EAPD statically when spec->eapd_switch isn't set.
* otherwise, unsol event will turn it on/off dynamically
*/
if (!spec->eapd_switch)
gpio |= spec->eapd_mask;
stac_gpio_set(codec, spec->gpio_mask, spec->gpio_dir, gpio);
spec->gpio_data |= spec->eapd_mask;
stac_gpio_set(codec, spec->gpio_mask, spec->gpio_dir, spec->gpio_data);
snd_hda_gen_init(codec);
@ -3915,6 +3915,7 @@ static void stac_setup_gpio(struct hda_codec *codec)
{
struct sigmatel_spec *spec = codec->spec;
spec->gpio_mask |= spec->eapd_mask;
if (spec->gpio_led) {
if (!spec->vref_mute_led_nid) {
spec->gpio_mask |= spec->gpio_led;