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Commit 1ea9a69d authored by Takashi Iwai's avatar Takashi Iwai
Browse files

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: default avatarEric Shattow <lucent@gmail.com>
Cc: <stable@vger.kernel.org> [v3.9+]
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 256ca9c3

sound/pci/hda/patch_sigmatel.c

+6 −5
Original line number Diff line number Diff line
@@ -417,11 +417,13 @@ 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);

		}

	}

}



static void stac_toggle_power_map(struct hda_codec *codec, hda_nid_t nid,

				  bool enable, bool do_write)
@@ -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;