[ALSA] oxygen: fix channel routing

Do not exchange the surround and back jacks except when in 7.1 mode
where the surround jack is not rear but side.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

sound/pci/oxygen/oxygen.c

@@ -19,10 +19,10 @@
 
 /*
  * SPI 0 -> 1st AK4396 (front)
- * SPI 1 -> 2nd AK4396 (side)
+ * SPI 1 -> 2nd AK4396 (surround)
  * SPI 2 -> 3rd AK4396 (center/LFE)
  * SPI 3 -> WM8785
- * SPI 4 -> 4th AK4396 (rear)
+ * SPI 4 -> 4th AK4396 (back)
  *
  * GPIO 0 -> DFS0 of AK5385
  * GPIO 1 -> DFS1 of AK5385
@@ -99,7 +99,7 @@ static void ak4396_write(struct oxygen *chip, unsigned int codec,
 {
 	/* maps ALSA channel pair number to SPI output */
 	static const u8 codec_spi_map[4] = {
-		0, 4, 2, 1
+		0, 1, 2, 4
 	};
 	oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER_WRITE |
 			 OXYGEN_SPI_DATA_LENGTH_2 |

sound/pci/oxygen/oxygen_lib.c

@@ -193,7 +193,7 @@ static void __devinit oxygen_init(struct oxygen *chip)
 	oxygen_write16(chip, OXYGEN_I2S_C_FORMAT, 0x010a);
 	oxygen_set_bits32(chip, OXYGEN_SPDIF_CONTROL, OXYGEN_SPDIF_MAGIC2);
 	oxygen_write32(chip, OXYGEN_SPDIF_OUTPUT_BITS, chip->spdif_bits);
-	oxygen_write16(chip, OXYGEN_PLAY_ROUTING, 0x6c00);
+	oxygen_write16(chip, OXYGEN_PLAY_ROUTING, 0xe100);
 	oxygen_write8(chip, OXYGEN_REC_ROUTING, 0x10);
 	oxygen_write8(chip, OXYGEN_ADC_MONITOR, 0x00);
 	oxygen_write8(chip, OXYGEN_A_MONITOR_ROUTING, 0xe4);

sound/pci/oxygen/oxygen_mixer.c

@@ -99,7 +99,7 @@ static int dac_mute_put(struct snd_kcontrol *ctl,
 static int upmix_info(struct snd_kcontrol *ctl, struct snd_ctl_elem_info *info)
 {
 	static const char *const names[3] = {
-		"Front", "Front+Rear", "Front+Rear+Side"
+		"Front", "Front+Surround", "Front+Surround+Back"
 	};
 	info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 	info->count = 1;
@@ -122,20 +122,22 @@ static int upmix_get(struct snd_kcontrol *ctl, struct snd_ctl_elem_value *value)
 
 void oxygen_update_dac_routing(struct oxygen *chip)
 {
-	/*
-	 * hardware channel order: front, side, center/lfe, rear
-	 * ALSA channel order:     front, rear, center/lfe, side
-	 */
 	static const unsigned int reg_values[3] = {
-		0x6c00, 0x2c00, 0x2000
+		0xe100, /* front <- 0, surround <- 1, center <- 2, back <- 3 */
+		0xe000, /* front <- 0, surround <- 0, center <- 2, back <- 3 */
+		0x2000  /* front <- 0, surround <- 0, center <- 2, back <- 0 */
 	};
+	u8 channels;
 	unsigned int reg_value;
 
-	if ((oxygen_read8(chip, OXYGEN_PLAY_CHANNELS) &
-	     OXYGEN_PLAY_CHANNELS_MASK) == OXYGEN_PLAY_CHANNELS_2)
+	channels = oxygen_read8(chip, OXYGEN_PLAY_CHANNELS) &
+		OXYGEN_PLAY_CHANNELS_MASK;
+	if (channels == OXYGEN_PLAY_CHANNELS_2)
 		reg_value = reg_values[chip->dac_routing];
+	else if (channels == OXYGEN_PLAY_CHANNELS_8)
+		reg_value = 0x6c00; /* surround <- 3, back <- 1 */
 	else
-		reg_value = 0x6c00;
+		reg_value = 0xe100;
 	oxygen_write16_masked(chip, OXYGEN_PLAY_ROUTING, reg_value, 0xff00);
 }
 

sound/pci/oxygen/virtuoso.c

@@ -19,9 +19,9 @@
 
 /*
  * SPI 0 -> 1st PCM1796 (front)
- * SPI 1 -> 2nd PCM1796 (side)
+ * SPI 1 -> 2nd PCM1796 (surround)
  * SPI 2 -> 3rd PCM1796 (center/LFE)
- * SPI 4 -> 4th PCM1796 (rear)
+ * SPI 4 -> 4th PCM1796 (back)
  *
  * GPIO 2 -> M0 of CS5381
  * GPIO 3 -> M1 of CS5381
@@ -76,7 +76,7 @@ static void pcm1796_write(struct oxygen *chip, unsigned int codec,
 {
 	/* maps ALSA channel pair number to SPI output */
 	static const u8 codec_map[4] = {
-		0, 4, 2, 1
+		0, 1, 2, 4
 	};
 	oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER_WRITE |
 			 OXYGEN_SPI_DATA_LENGTH_2 |