Commit d38cce70 authored by Kunal Gangakhedkar's avatar Kunal Gangakhedkar Committed by Takashi Iwai
Browse files

ALSA: hda - Fix mute led GPIO on HP dv-series notebooks 



On my laptop (HP dv6-1110ax), there are no OEM strings in SMBIOS of type
"HP_Mute_LED*". Hence, the GPIO for the mute button LED doesn't get set
properly. I didn't find the strings in my cousin's laptop (HP dv9500t CTO)
either.

As per the documentation of find_mute_led_gpio(), these strings occur
in HP B-series systems - so, before scanning the SMBIOS strings, we need to
check if we're dealing with a B-series system.
Need to get confirmation from HP if this logic takes care of all the
systems. I'm trying to poke a friend there.

Signed-off-by: default avatarKunal Gangakhedkar <kunal.gangakhedkar@gmail.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent c7a8eb10

sound/pci/hda/patch_sigmatel.c

+45 −16
Original line number Diff line number Diff line
@@ -4730,6 +4730,26 @@ static void stac92xx_unsol_event(struct hda_codec *codec, unsigned int res) 
	}

}



static int hp_blike_system(u32 subsystem_id);



static void set_hp_led_gpio(struct hda_codec *codec)

{

	struct sigmatel_spec *spec = codec->spec;

	switch (codec->vendor_id) {

	case 0x111d7608:

		/* GPIO 0 */

		spec->gpio_led = 0x01;

		break;

	case 0x111d7600:

	case 0x111d7601:

	case 0x111d7602:

	case 0x111d7603:

		/* GPIO 3 */

		spec->gpio_led = 0x08;

		break;

	}

}



/*

 * This method searches for the mute LED GPIO configuration

 * provided as OEM string in SMBIOS. The format of that string
@@ -4741,6 +4761,14 @@ static void stac92xx_unsol_event(struct hda_codec *codec, unsigned int res) 
 *

 * So, HP B-series like systems may have HP_Mute_LED_0 (current models)

 * or  HP_Mute_LED_0_3 (future models) OEM SMBIOS strings

 *

 *

 * The dv-series laptops don't seem to have the HP_Mute_LED* strings in

 * SMBIOS - at least the ones I have seen do not have them - which include

 * my own system (HP Pavilion dv6-1110ax) and my cousin's

 * HP Pavilion dv9500t CTO.

 * Need more information on whether it is true across the entire series.

 * -- kunal

 */

static int find_mute_led_gpio(struct hda_codec *codec)

{
@@ -4758,20 +4786,19 @@ static int find_mute_led_gpio(struct hda_codec *codec) 
			}

			if (sscanf(dev->name, "HP_Mute_LED_%d",

				  &spec->gpio_led_polarity) == 1) {

				switch (codec->vendor_id) {

				case 0x111d7608:

					/* GPIO 0 */

					spec->gpio_led = 0x01;

					return 1;

				case 0x111d7600:

				case 0x111d7601:

				case 0x111d7602:

				case 0x111d7603:

					/* GPIO 3 */

					spec->gpio_led = 0x08;

				set_hp_led_gpio(codec);

				return 1;

			}

		}



		/*

		 * Fallback case - if we don't find the DMI strings,

		 * we statically set the GPIO - if not a B-series system.

		 */

		if (!hp_blike_system(codec->subsystem_id)) {

			set_hp_led_gpio(codec);

			spec->gpio_led_polarity = 1;

			return 1;

		}

	}

	return 0;
@@ -5548,6 +5575,8 @@ again: 
	spec->num_dmuxes = ARRAY_SIZE(stac92hd71bxx_dmux_nids);

	spec->num_smuxes = stac92hd71bxx_connected_smuxes(codec, 0x1e);



	snd_printdd("Found board config: %d\n", spec->board_config);



	switch (spec->board_config) {

	case STAC_HP_M4:

		/* enable internal microphone */

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