[ALSA] oxygen: make line-in exclusive only on Xonar

Move the line input switching code to the Virtuoso driver because only
the Xonar cards bypass the analog mixer for line input.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

sound/pci/oxygen/oxygen.h

@@ -84,6 +84,8 @@ struct oxygen_model {
 			       struct snd_pcm_hw_params *params);
 	void (*update_dac_volume)(struct oxygen *chip);
 	void (*update_dac_mute)(struct oxygen *chip);
+	void (*ac97_switch_hook)(struct oxygen *chip,
+				 unsigned int reg, int mute);
 	size_t model_data_size;
 	u8 dac_channels;
 	u8 used_channels;

sound/pci/oxygen/oxygen_lib.c

@@ -337,8 +337,6 @@ static void __devinit oxygen_init(struct oxygen *chip)
 		oxygen_write_ac97(chip, 0, AC97_REC_GAIN, 0x8000);
 		oxygen_write_ac97(chip, 0, AC97_CENTER_LFE_MASTER, 0x8080);
 		oxygen_write_ac97(chip, 0, AC97_SURROUND_MASTER, 0x8080);
-		oxygen_ac97_clear_bits(chip, 0,
-				       CM9780_GPIO_STATUS, CM9780_GPO0);
 		/* power down unused ADCs and DACs */
 		oxygen_ac97_set_bits(chip, 0, AC97_POWERDOWN,
 				     AC97_PD_PR0 | AC97_PD_PR1);

sound/pci/oxygen/oxygen_mixer.c

@@ -465,19 +465,6 @@ static int ac97_switch_get(struct snd_kcontrol *ctl,
 	return 0;
 }
 
-static void ac97_mute_ctl(struct oxygen *chip, unsigned int control)
-{
-	unsigned int index = chip->controls[control]->private_value & 0xff;
-	u16 value;
-
-	value = oxygen_read_ac97(chip, 0, index);
-	if (!(value & 0x8000)) {
-		oxygen_write_ac97(chip, 0, index, value | 0x8000);
-		snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
-			       &chip->controls[control]->id);
-	}
-}
-
 static int ac97_switch_put(struct snd_kcontrol *ctl,
 			   struct snd_ctl_elem_value *value)
 {
@@ -498,22 +485,9 @@ static int ac97_switch_put(struct snd_kcontrol *ctl,
 	change = newreg != oldreg;
 	if (change) {
 		oxygen_write_ac97(chip, 0, index, newreg);
-		if (index == AC97_LINE) {
-			oxygen_write_ac97_masked(chip, 0, CM9780_GPIO_STATUS,
-						 newreg & 0x8000 ?
-						 CM9780_GPO0 : 0, CM9780_GPO0);
-			if (!(newreg & 0x8000)) {
-				ac97_mute_ctl(chip, CONTROL_MIC_CAPTURE_SWITCH);
-				ac97_mute_ctl(chip, CONTROL_CD_CAPTURE_SWITCH);
-				ac97_mute_ctl(chip, CONTROL_AUX_CAPTURE_SWITCH);
-			}
-		} else if ((index == AC97_MIC || index == AC97_CD ||
-			    index == AC97_VIDEO || index == AC97_AUX) &&
-			   bitnr == 15 && !(newreg & 0x8000)) {
-			ac97_mute_ctl(chip, CONTROL_LINE_CAPTURE_SWITCH);
-			oxygen_write_ac97_masked(chip, 0, CM9780_GPIO_STATUS,
-						 CM9780_GPO0, CM9780_GPO0);
-		}
+		if (bitnr == 15 && chip->model->ac97_switch_hook)
+			chip->model->ac97_switch_hook(chip, index,
+						      newreg & 0x8000);
 	}
 	mutex_unlock(&chip->mutex);
 	return change;
@@ -671,6 +645,7 @@ static const struct snd_kcontrol_new ac97_controls[] = {
 	AC97_VOLUME("Mic Capture Volume", AC97_MIC),
 	AC97_SWITCH("Mic Capture Switch", AC97_MIC, 15, 1),
 	AC97_SWITCH("Mic Boost (+20dB)", AC97_MIC, 6, 0),
+	AC97_VOLUME("Line Capture Volume", AC97_LINE),
 	AC97_SWITCH("Line Capture Switch", AC97_LINE, 15, 1),
 	AC97_VOLUME("CD Capture Volume", AC97_CD),
 	AC97_SWITCH("CD Capture Switch", AC97_CD, 15, 1),

sound/pci/oxygen/virtuoso.c

@@ -80,6 +80,8 @@ MODULE_DEVICE_TABLE(pci, xonar_ids);
 #define GPIO_ALT		0x0080
 #define GPIO_OUTPUT_ENABLE	0x0100
 
+#define GPIO_LINE_MUTE		CM9780_GPO0
+
 /* register 16 */
 #define PCM1796_ATL_MASK	0xff
 /* register 17 */
@@ -168,6 +170,7 @@ static void xonar_init(struct oxygen *chip)
 			      GPIO_CS5381_M_SINGLE,
 			      GPIO_CS5381_M_MASK | GPIO_ALT);
 	oxygen_ac97_set_bits(chip, 0, CM9780_JACK, CM9780_FMIC2MIC);
+	oxygen_ac97_clear_bits(chip, 0, CM9780_GPIO_STATUS, GPIO_LINE_MUTE);
 	msleep(300);
 	oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL, GPIO_OUTPUT_ENABLE);
 	oxygen_set_bits16(chip, OXYGEN_GPIO_DATA, GPIO_OUTPUT_ENABLE);
@@ -231,6 +234,47 @@ static void set_cs5381_params(struct oxygen *chip,
 			      value, GPIO_CS5381_M_MASK);
 }
 
+static void mute_ac97_ctl(struct oxygen *chip, unsigned int control)
+{
+	unsigned int index = chip->controls[control]->private_value & 0xff;
+	u16 value;
+
+	value = oxygen_read_ac97(chip, 0, index);
+	if (!(value & 0x8000)) {
+		oxygen_write_ac97(chip, 0, index, value | 0x8000);
+		snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
+			       &chip->controls[control]->id);
+	}
+}
+
+static void xonar_ac97_switch_hook(struct oxygen *chip,
+				   unsigned int reg, int mute)
+{
+	/* line-in is exclusive */
+	switch (reg) {
+	case AC97_LINE:
+		oxygen_write_ac97_masked(chip, 0, CM9780_GPIO_STATUS,
+					 mute ? GPIO_LINE_MUTE : 0,
+					 GPIO_LINE_MUTE);
+		if (!mute) {
+			mute_ac97_ctl(chip, CONTROL_MIC_CAPTURE_SWITCH);
+			mute_ac97_ctl(chip, CONTROL_CD_CAPTURE_SWITCH);
+			mute_ac97_ctl(chip, CONTROL_AUX_CAPTURE_SWITCH);
+		}
+		break;
+	case AC97_MIC:
+	case AC97_CD:
+	case AC97_VIDEO:
+	case AC97_AUX:
+		if (!mute) {
+			oxygen_ac97_set_bits(chip, 0, CM9780_GPIO_STATUS,
+					     GPIO_LINE_MUTE);
+			mute_ac97_ctl(chip, CONTROL_LINE_CAPTURE_SWITCH);
+		}
+		break;
+	}
+}
+
 static int pcm1796_volume_info(struct snd_kcontrol *ctl,
 			       struct snd_ctl_elem_info *info)
 {
@@ -288,7 +332,10 @@ static int xonar_control_filter(struct snd_kcontrol_new *template)
 		template->info = pcm1796_volume_info,
 		template->tlv.p = pcm1796_db_scale;
 	} else if (!strncmp(template->name, "CD Capture ", 11)) {
+		/* CD in is actually connected to the video in pin */
 		template->private_value ^= AC97_CD ^ AC97_VIDEO;
+	} else if (!strcmp(template->name, "Line Capture Volume")) {
+		return 1; /* line-in bypasses the AC'97 mixer */
 	}
 	return 0;
 }
@@ -310,6 +357,7 @@ static const struct oxygen_model model_xonar = {
 	.set_adc_params = set_cs5381_params,
 	.update_dac_volume = update_pcm1796_volume,
 	.update_dac_mute = update_pcm1796_mute,
+	.ac97_switch_hook = xonar_ac97_switch_hook,
 	.dac_channels = 8,
 	.used_channels = OXYGEN_CHANNEL_B |
 			 OXYGEN_CHANNEL_C |