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ALSA: hda/sigmatel - Allow auto-switching for dock line-in of HP laptops

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Many HP laptops with STAC codecs have a docking station port and BIOS
sets the pins for the input on the dock as a line in.  Because the
generic parser doesn't handle a line in pin as auto-switchable, this
resulted in the manual capture source selection on these laptops.

However, from the usability POV, the automatic switching is easier.
This patch adds the line_in_auto_switch hint in the fixup function for
these laptops.  Even if no dock port is present, this should be
harmless as the generic parser allows the auto-switching only in a
limited situation (all three pins are located in different
positions).

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2014-02-27 16:24:53 +01:00
parent 6776a5d712
commit e8b99a1dcb
1 changed files with 3 additions and 0 deletions
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3
sound/pci/hda/patch_sigmatel.c
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@ -2089,6 +2089,9 @@ static void stac92hd83xxx_fixup_hp(struct hda_codec *codec,
codec_dbg(codec, "mute LED gpio %d polarity %d\n",
spec->gpio_led,
spec->gpio_led_polarity);
/* allow auto-switching of dock line-in */
spec->gen.line_in_auto_switch = true;
}
static void stac92hd83xxx_fixup_hp_zephyr(struct hda_codec *codec,