diff --git a/sound/pci/oxygen/oxygen.h b/sound/pci/oxygen/oxygen.h
index d53c18c6fcd8ded899a66985a03d6d0f377a97cf..7efbf54bc4ec1c1f0bef1e3e2698ed10b5373462 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 9a7c880eddbd6b122187da853096a97f31d2915c..d0bef09a6999bfa2cbce9aece2be6b60da1df857 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 1db4aa5dfad4bacd718d4d673b618ef9d513ab1e..b678e2de4adf3a5671b29f131dee35f6673730d3 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 |