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ALSA: hda - Fix mute LED on HP laptops in runtime suspend 

When HP laptops with mute and mic-record LEDs go to runtime suspend,
these LEDs are turned on forcibly no matter whether GPIO pis are on or
off.  This strange behavior seems triggered by resetting the HD-audio
bus link at azx_rutime_suspend().  So, just add a new hda_bus flag to
avoid the link reset at runtime suspend and set it for these HP
machines.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2013-10-24 01:24:15 +02:00
parent 161ebf295e
commit 95f74c41b2
3 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
sound/pci/hda/hda_codec.h
View File

@ -698,6 +698,7 @@ struct hda_bus {
unsigned int in_reset:1; /* during reset operation */
unsigned int power_keep_link_on:1; /* don't power off HDA link */
unsigned int no_response_fallback:1; /* don't fallback at RIRB error */
unsigned int avoid_link_reset:1; /* don't reset link at runtime PM */
int primary_dig_out_type; /* primary digital out PCM type */
};

3
sound/pci/hda/hda_intel.c
View File

@ -2986,7 +2986,8 @@ static int azx_runtime_suspend(struct device *dev)
STATESTS_INT_MASK);
azx_stop_chip(chip);
azx_enter_link_reset(chip);
if (!chip->bus->avoid_link_reset)
azx_enter_link_reset(chip);
azx_clear_irq_pending(chip);
if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL)
hda_display_power(false);

4
sound/pci/hda/patch_sigmatel.c
View File

@ -2091,8 +2091,10 @@ static void stac92hd83xxx_fixup_hp_mic_led(struct hda_codec *codec,
{
struct sigmatel_spec *spec = codec->spec;
if (action == HDA_FIXUP_ACT_PRE_PROBE)
if (action == HDA_FIXUP_ACT_PRE_PROBE) {
spec->mic_mute_led_gpio = 0x08; /* GPIO3 */
codec->bus->avoid_link_reset = 1;
}
}
static void stac92hd83xxx_fixup_headset_jack(struct hda_codec *codec,