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SubjectRe: [Regression] No sound on HP Pavilion dv6, STAC92xx
Below is the patch for 3.4 and older.

Takashi

---
From: Takashi Iwai <tiwai@suse.de>
Subject: [PATCH] ALSA: hda - Fix power-map regression for HP dv6 & co

commit 6e1c39c6b00d9141a82c231ba7c5e5b1716974b2 upstream.

The recent fix for power-map controls (commit b0791dda813) caused
regressions on some other HP laptops. They have fixed pins but these
pins are exposed as jack-detectable. Thus the driver tries to control
the power-map dynamically per jack detection where it never gets on.

This patch corrects the condition check for fixed pins so that the
power-map is set always for these pins.

NOTE: this is no simple backport from 3.5 kernel. Since 3.5 kernel
had significant code change in the relevant part, I had to fix this
differently.

BugLink: http://bugs.launchpad.net/bugs/1013183
Reported-by: Luis Henriques <luis.henriques@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
sound/pci/hda/patch_sigmatel.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index 7b7a516..2b973f5 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -4457,7 +4457,7 @@ static int stac92xx_init(struct hda_codec *codec)
AC_PINCTL_IN_EN);
for (i = 0; i < spec->num_pwrs; i++) {
hda_nid_t nid = spec->pwr_nids[i];
- int pinctl, def_conf;
+ unsigned int pinctl, def_conf;

/* power on when no jack detection is available */
/* or when the VREF is used for controlling LED */
@@ -4484,7 +4484,7 @@ static int stac92xx_init(struct hda_codec *codec)
def_conf = get_defcfg_connect(def_conf);
/* skip any ports that don't have jacks since presence
* detection is useless */
- if (def_conf != AC_JACK_PORT_NONE &&
+ if (def_conf != AC_JACK_PORT_COMPLEX ||
!is_jack_detectable(codec, nid)) {
stac_toggle_power_map(codec, nid, 1);
continue;
--
1.7.10.4


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