ALSA: hda - Add Bass Speaker switch for HP dv7

The bass speaker is controlled via GPIO5.

Tested-by: Wael Nasreddine <mla@nasreddine.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 57 insertions, 0 deletions

diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index 0bafea9d5106..a4526d008042 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -5402,6 +5402,54 @@ static int stac92hd71bxx_connected_smuxes(struct hda_codec *codec,
                 return 0;
 }
 
+/* HP dv7 bass switch - GPIO5 */
+#define stac_hp_bass_gpio_info  snd_ctl_boolean_mono_info
+static int stac_hp_bass_gpio_get(struct snd_kcontrol *kcontrol,
+                                 struct snd_ctl_elem_value *ucontrol)
+{
+        struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+        struct sigmatel_spec *spec = codec->spec;
+        ucontrol->value.integer.value[0] = !!(spec->gpio_data & 0x20);
+        return 0;
+}
+
+static int stac_hp_bass_gpio_put(struct snd_kcontrol *kcontrol,
+                                 struct snd_ctl_elem_value *ucontrol)
+{
+        struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+        struct sigmatel_spec *spec = codec->spec;
+        unsigned int gpio_data;
+
+        gpio_data = (spec->gpio_data & ~0x20) |
+                (ucontrol->value.integer.value[0] ? 0x20 : 0);
+        if (gpio_data == spec->gpio_data)
+                return 0;
+        spec->gpio_data = gpio_data;
+        stac_gpio_set(codec, spec->gpio_mask, spec->gpio_dir, spec->gpio_data);
+        return 1;
+}
+
+static struct snd_kcontrol_new stac_hp_bass_sw_ctrl = {
+        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+        .info = stac_hp_bass_gpio_info,
+        .get = stac_hp_bass_gpio_get,
+        .put = stac_hp_bass_gpio_put,
+};
+
+static int stac_add_hp_bass_switch(struct hda_codec *codec)
+{
+        struct sigmatel_spec *spec = codec->spec;
+
+        if (!stac_control_new(spec, &stac_hp_bass_sw_ctrl,
+                              "Bass Speaker Playback Switch", 0))
+                return -ENOMEM;
+
+        spec->gpio_mask |= 0x20;
+        spec->gpio_dir |= 0x20;
+        spec->gpio_data |= 0x20;
+        return 0;
+}
+
 static int patch_stac92hd71bxx(struct hda_codec *codec)
 {
         struct sigmatel_spec *spec;
@@ -5642,6 +5690,15 @@ again:
                 return err;
         }
 
+        /* enable bass on HP dv7 */
+        if (spec->board_config == STAC_HP_DV5) {
+                unsigned int cap;
+                cap = snd_hda_param_read(codec, 0x1, AC_PAR_GPIO_CAP);
+                cap &= AC_GPIO_IO_COUNT;
+                if (cap >= 6)
+                        stac_add_hp_bass_switch(codec);
+        }
+
         codec->proc_widget_hook = stac92hd7x_proc_hook;
 
         return 0;