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ALSA: hda - Detect HP mute-LED GPIO setup from GPIO counts

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The GPIO pin number for the mute LED control on HP laptops can be
determined more easily by checking the number of available GPIO pins
of the codec chip.  On a small package with up to 3 GPIOs, GPIO 0 is
used while GPIO 3 is used for others.

This fixes the missing mute GPIO for some HP laptops with new codecs.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2010-02-08 15:06:13 +01:00
parent 794d620650
commit 07f804495c
1 changed files with 8 additions and 13 deletions
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21
sound/pci/hda/patch_sigmatel.c
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@ -4754,19 +4754,14 @@ 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;
}
unsigned int gpio;
gpio = snd_hda_param_read(codec, codec->afg, AC_PAR_GPIO_CAP);
gpio &= AC_GPIO_IO_COUNT;
if (gpio > 3)
spec->gpio_led = 0x08; /* GPIO 3 */
else
spec->gpio_led = 0x01; /* GPIO 0 */
}
/*