ALSA: oxygen: Xonar DG(X): modify input select functions

First of all, we should not touch the GPIOs. They are not
for selecting the capture source, but they seems just enable
the whole audio input curcuit. The 'put' function calls the
'apply' functions to change register values. Change the order
of capture sources.

Signed-off-by: Roman Volkov <[e-mail]>
Signed-off-by: Clemens Ladisch <[e-mail]>

sound/pci/oxygen/xonar_dg.h

···
 	unsigned char output_sel;
 	/* volumes for all capture sources */
 	char input_vol[4][2];
-	unsigned int input_sel;
+	/* input select: mic/fp mic/line/aux */
+	unsigned char input_sel;
 	u8 hp_vol_att;
 };
 

sound/pci/oxygen/xonar_dg_mixer.c

···
 	return changed;
 }
 
+/* Capture Source */
+
+static int input_source_apply(struct oxygen *chip)
+{
+	struct dg *data = chip->model_data;
+
+	data->cs4245_shadow[CS4245_ANALOG_IN] &= ~CS4245_SEL_MASK;
+	if (data->input_sel == CAPTURE_SRC_FP_MIC)
+		data->cs4245_shadow[CS4245_ANALOG_IN] |= CS4245_SEL_INPUT_2;
+	else if (data->input_sel == CAPTURE_SRC_LINE)
+		data->cs4245_shadow[CS4245_ANALOG_IN] |= CS4245_SEL_INPUT_4;
+	else if (data->input_sel != CAPTURE_SRC_MIC)
+		data->cs4245_shadow[CS4245_ANALOG_IN] |= CS4245_SEL_INPUT_1;
+	return cs4245_write_spi(chip, CS4245_ANALOG_IN);
+}
+
 static int input_sel_info(struct snd_kcontrol *ctl,
 			  struct snd_ctl_elem_info *info)
 {
 	static const char *const names[4] = {
-		"Mic", "Aux", "Front Mic", "Line"
+		"Mic", "Front Mic", "Line", "Aux"
 	};
 
 	return snd_ctl_enum_info(info, 1, 4, names);
···
 static int input_sel_put(struct snd_kcontrol *ctl,
 			 struct snd_ctl_elem_value *value)
 {
-	static const u8 sel_values[4] = {
-		CS4245_SEL_MIC,
-		CS4245_SEL_INPUT_1,
-		CS4245_SEL_INPUT_2,
-		CS4245_SEL_INPUT_4
-	};
 	struct oxygen *chip = ctl->private_data;
 	struct dg *data = chip->model_data;
 	int changed;
+	int ret;
 
 	if (value->value.enumerated.item[0] > 3)
 		return -EINVAL;
···
 	if (changed) {
 		data->input_sel = value->value.enumerated.item[0];
 
-		cs4245_write(chip, CS4245_ANALOG_IN,
-			     (data->cs4245_shadow[CS4245_ANALOG_IN] &
-							~CS4245_SEL_MASK) |
-			     sel_values[data->input_sel]);
-
-		cs4245_write_cached(chip, CS4245_PGA_A_CTRL,
-				    data->input_vol[data->input_sel][0]);
-		cs4245_write_cached(chip, CS4245_PGA_B_CTRL,
-				    data->input_vol[data->input_sel][1]);
-
-		oxygen_write16_masked(chip, OXYGEN_GPIO_DATA,
-				      data->input_sel ? 0 : GPIO_INPUT_ROUTE,
-				      GPIO_INPUT_ROUTE);
+		ret = input_source_apply(chip);
+		if (ret >= 0)
+			ret = input_volume_apply(chip,
+				data->input_vol[data->input_sel][0],
+				data->input_vol[data->input_sel][1]);
+		changed = ret >= 0 ? 1 : ret;
 	}
 	mutex_unlock(&chip->mutex);
 	return changed;
···
 		.get = hp_mute_get,
 		.put = hp_mute_put,
 	},
-	INPUT_VOLUME("Mic Capture Volume", 0),
-	INPUT_VOLUME("Aux Capture Volume", 1),
-	INPUT_VOLUME("Front Mic Capture Volume", 2),
-	INPUT_VOLUME("Line Capture Volume", 3),
+	INPUT_VOLUME("Mic Capture Volume", CAPTURE_SRC_MIC),
+	INPUT_VOLUME("Front Mic Capture Volume", CAPTURE_SRC_FP_MIC),
+	INPUT_VOLUME("Line Capture Volume", CAPTURE_SRC_LINE),
+	INPUT_VOLUME("Aux Capture Volume", CAPTURE_SRC_AUX),
 	{
 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 		.name = "Capture Source",