ALSA: hda - Fix EAPD GPIO control for Sigmatel codecs
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>
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index e2f8359..766e567 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -417,9 +417,11 @@
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_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 @@
{
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;