[ALSA] hda-codec - Add workaround for multiple HPs

Dell laptops have multiple HP jacks that can be used for multi-channel
outputs.  The current auto pincfg handles the speaker as the primary
output and thus cannot handle the multi-channel configuration for such
cases.  This patch adds a workaround to fix this issue by swapping the
HP and speaker during multi-channel setup routines.

Signed-off-by: Jiang Zhe <zhe.jiang@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index e02d3bac2096865d6c7d4aa8a0106b5958040ede..992568368ef445d121f8978fd62e8318135c045b 100644 (file)
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -2135,6 +2135,7 @@ static int stac92xx_parse_auto_config(struct hda_codec *codec, hda_nid_t dig_out
 {
        struct sigmatel_spec *spec = codec->spec;
        int err;
+       int hp_speaker_swap = 0;
 
        if ((err = snd_hda_parse_pin_def_config(codec,
                                                &spec->autocfg,
@@ -2143,6 +2144,24 @@ static int stac92xx_parse_auto_config(struct hda_codec *codec, hda_nid_t dig_out
        if (! spec->autocfg.line_outs)
                return 0; /* can't find valid pin config */
 
+       /* If we have no real line-out pin and multiple hp-outs, HPs should
+        * be set up as multi-channel outputs.
+        */
+       if (spec->autocfg.line_out_type == AUTO_PIN_SPEAKER_OUT &&
+           spec->autocfg.hp_outs > 1) {
+               /* Copy hp_outs to line_outs, backup line_outs in
+                * speaker_outs so that the following routines can handle
+                * HP pins as primary outputs.
+                */
+               memcpy(spec->autocfg.speaker_pins, spec->autocfg.line_out_pins,
+                      sizeof(spec->autocfg.line_out_pins));
+               spec->autocfg.speaker_outs = spec->autocfg.line_outs;
+               memcpy(spec->autocfg.line_out_pins, spec->autocfg.hp_pins,
+                      sizeof(spec->autocfg.hp_pins));
+               spec->autocfg.line_outs = spec->autocfg.hp_outs;
+               hp_speaker_swap = 1;
+       }
+
        if ((err = stac92xx_add_dyn_out_pins(codec, &spec->autocfg)) < 0)
                return err;
        if (spec->multiout.num_dacs == 0)
@@ -2154,6 +2173,19 @@ static int stac92xx_parse_auto_config(struct hda_codec *codec, hda_nid_t dig_out
        if (err < 0)
                return err;
 
+       if (hp_speaker_swap == 1) {
+               /* Restore the hp_outs and line_outs */
+               memcpy(spec->autocfg.hp_pins, spec->autocfg.line_out_pins,
+                      sizeof(spec->autocfg.line_out_pins));
+               spec->autocfg.hp_outs = spec->autocfg.line_outs;
+               memcpy(spec->autocfg.line_out_pins, spec->autocfg.speaker_pins,
+                      sizeof(spec->autocfg.speaker_pins));
+               spec->autocfg.line_outs = spec->autocfg.speaker_outs;
+               memset(spec->autocfg.speaker_pins, 0,
+                      sizeof(spec->autocfg.speaker_pins));
+               spec->autocfg.speaker_outs = 0;
+       }
+
        err = stac92xx_auto_create_hp_ctls(codec, &spec->autocfg);
 
        if (err < 0)