[ALSA] virtuoso: correctly switch input jack on Xonar DX

When selecting the capture source on the Xonar DX, the input jack must
be routed to either the line input or the microphone input by setting a
GPIO pin.  This requires an additional callback so that the model driver
can hook into the toggling of AC97 switches.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

3 files changed, 24 insertions, 4 deletions

diff --git a/sound/pci/oxygen/oxygen.h b/sound/pci/oxygen/oxygen.h
index d53c18c6fcd8..7efbf54bc4ec 100644
--- a/sound/pci/oxygen/oxygen.h
+++ b/sound/pci/oxygen/oxygen.h
@@ -98,6 +98,8 @@ struct oxygen_model {
         void (*update_dac_volume)(struct oxygen *chip);
         void (*update_dac_mute)(struct oxygen *chip);
         void (*gpio_changed)(struct oxygen *chip);
+        void (*ac97_switch)(struct oxygen *chip,
+                            unsigned int reg, unsigned int mute);
         size_t model_data_size;
         unsigned int pcm_dev_cfg;
         u8 dac_channels;
diff --git a/sound/pci/oxygen/oxygen_mixer.c b/sound/pci/oxygen/oxygen_mixer.c
index 9a7c880eddbd..d0bef09a6999 100644
--- a/sound/pci/oxygen/oxygen_mixer.c
+++ b/sound/pci/oxygen/oxygen_mixer.c
@@ -518,6 +518,8 @@ static void mute_ac97_ctl(struct oxygen *chip, unsigned int control)
         value = oxygen_read_ac97(chip, 0, priv_idx);
         if (!(value & 0x8000)) {
                 oxygen_write_ac97(chip, 0, priv_idx, value | 0x8000);
+                if (chip->model->ac97_switch)
+                        chip->model->ac97_switch(chip, priv_idx, 0x8000);
                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
                                &chip->controls[control]->id);
         }
@@ -544,6 +546,8 @@ static int ac97_switch_put(struct snd_kcontrol *ctl,
         change = newreg != oldreg;
         if (change) {
                 oxygen_write_ac97(chip, codec, index, newreg);
+                if (codec == 0 && chip->model->ac97_switch)
+                        chip->model->ac97_switch(chip, index, newreg & 0x8000);
                 if (index == AC97_LINE) {
                         oxygen_write_ac97_masked(chip, 0, CM9780_GPIO_STATUS,
                                                  newreg & 0x8000 ?
diff --git a/sound/pci/oxygen/virtuoso.c b/sound/pci/oxygen/virtuoso.c
index 1db4aa5dfad4..b678e2de4adf 100644
--- a/sound/pci/oxygen/virtuoso.c
+++ b/sound/pci/oxygen/virtuoso.c
@@ -47,10 +47,10 @@
  * GPI 0 <- external power present
  *
  * GPIO 0 -> enable output to speakers
- * GPIO 1 -> ALT?
+ * GPIO 1 -> ?
  * GPIO 2 -> M0 of CS5361
  * GPIO 3 -> M1 of CS5361
- * GPIO 8 -> line-in/mic-in/digital-out switch?
+ * GPIO 8 -> route input jack to line-in (0) or mic-in (1)
  *
  * CS4398:
  *
@@ -120,7 +120,7 @@ MODULE_DEVICE_TABLE(pci, xonar_ids);
 #define GPI_DX_EXT_POWER        0x01
 #define GPIO_DX_OUTPUT_ENABLE   0x0001
 #define GPIO_DX_UNKNOWN1        0x0002
-#define GPIO_DX_UNKNOWN2        0x0100
+#define GPIO_DX_INPUT_ROUTE     0x0100
 
 #define I2C_DEVICE_CS4398       0x9e    /* 10011, AD1=1, AD0=1, /W=0 */
 #define I2C_DEVICE_CS4362A      0x30    /* 001100, AD0=0, /W=0 */
@@ -267,7 +267,8 @@ static void xonar_dx_init(struct oxygen *chip)
         cs4362a_write(chip, 0x01, CS4362A_CPEN);
 
         oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL,
-                          GPIO_DX_UNKNOWN1 | GPIO_DX_UNKNOWN2);
+                          GPIO_DX_UNKNOWN1 | GPIO_DX_INPUT_ROUTE);
+        oxygen_clear_bits16(chip, OXYGEN_GPIO_DATA, GPIO_DX_INPUT_ROUTE);
 
         xonar_common_init(chip);
 
@@ -469,6 +470,18 @@ static const struct snd_kcontrol_new alt_switch = {
         .put = alt_switch_put,
 };
 
+static void xonar_dx_ac97_switch(struct oxygen *chip,
+                                 unsigned int reg, unsigned int mute)
+{
+        if (reg == AC97_LINE) {
+                spin_lock_irq(&chip->reg_lock);
+                oxygen_write16_masked(chip, OXYGEN_GPIO_DATA,
+                                      mute ? GPIO_DX_INPUT_ROUTE : 0,
+                                      GPIO_DX_INPUT_ROUTE);
+                spin_unlock_irq(&chip->reg_lock);
+        }
+}
+
 static const DECLARE_TLV_DB_SCALE(pcm1796_db_scale, -12000, 50, 0);
 static const DECLARE_TLV_DB_SCALE(cs4362a_db_scale, -12700, 100, 0);
 
@@ -572,6 +585,7 @@ static const struct oxygen_model xonar_models[] = {
                 .update_dac_volume = update_cs43xx_volume,
                 .update_dac_mute = update_cs43xx_mute,
                 .gpio_changed = xonar_gpio_changed,
+                .ac97_switch = xonar_dx_ac97_switch,
                 .model_data_size = sizeof(struct xonar_data),
                 .pcm_dev_cfg = PLAYBACK_0_TO_I2S |
                                PLAYBACK_1_TO_SPDIF |