ALSA: hda - Fix silent headphone output on Panasonic CF-74

CF-74 does the headphone/speaker switching on hardware, thus the driver
shouldn't do any software-toggling of pins.  Otherwise it results in a
silent headphone output.

This patch simply resets the hp_detect flag to fix the problem.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 6 insertions, 0 deletions

diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index 0e6fc56fa378..89ff916a0ed1 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -4467,6 +4467,12 @@ static int patch_stac9200(struct hda_codec *codec)
                 return err;
         }
 
+        /* CF-74 has no headphone detection, and the driver should *NOT*
+         * do detection and HP/speaker toggle because the hardware does it.
+         */
+        if (spec->board_config == STAC_9200_PANASONIC)
+                spec->hp_detect = 0;
+
         codec->patch_ops = stac92xx_patch_ops;
 
         return 0;