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authorKunal Gangakhedkar <kunal.gangakhedkar@gmail.com>2010-01-15 21:01:47 +0530
committerTakashi Iwai <tiwai@suse.de>2010-01-15 18:15:42 +0100
commitd38cce7046cfd0011f69d5dcf6a22525438154f6 (patch)
treeb3e352940c223f0ad4f803b62e8ed8b340bcb4c4 /sound
parentc7a8eb103248a110cdbe0530d8c5ce987f099eee (diff)
downloadlinux-2.6.34-ux500-d38cce7046cfd0011f69d5dcf6a22525438154f6.tar.gz
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: Kunal Gangakhedkar <kunal.gangakhedkar@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
-rw-r--r--sound/pci/hda/patch_sigmatel.c61
1 files changed, 45 insertions, 16 deletions
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index 2291a839681..799ba257090 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -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)
{
@@ -4751,28 +4779,27 @@ static int find_mute_led_gpio(struct hda_codec *codec)
while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING,
NULL, dev))) {
if (sscanf(dev->name, "HP_Mute_LED_%d_%d",
- &spec->gpio_led_polarity,
- &spec->gpio_led) == 2) {
+ &spec->gpio_led_polarity,
+ &spec->gpio_led) == 2) {
spec->gpio_led = 1 << spec->gpio_led;
return 1;
}
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;
- return 1;
- }
+ &spec->gpio_led_polarity) == 1) {
+ 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 */