[ALSA] oxygen: make the I2S format configurable

Add proper register bit symbols for the I2S format field, and allow card
models to configure the I2S format to be used for the DACs and ADCs.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

sound/pci/oxygen/oxygen_regs.h

@@ -105,18 +105,20 @@
 #define  OXYGEN_RATE_96000		0x0005
 #define  OXYGEN_RATE_176400		0x0006
 #define  OXYGEN_RATE_192000		0x0007
-#define  OXYGEN_I2S_MAGIC1_MASK		0x0008
+#define  OXYGEN_I2S_FORMAT_MASK		0x0008
+#define  OXYGEN_I2S_FORMAT_I2S		0x0000
+#define  OXYGEN_I2S_FORMAT_LJUST	0x0008
 #define  OXYGEN_I2S_MAGIC2_MASK		0x0030
-#define  OXYGEN_I2S_FORMAT_MASK		0x00c0
-#define  OXYGEN_I2S_FORMAT_16		0x0000
-#define  OXYGEN_I2S_FORMAT_20		0x0040
-#define  OXYGEN_I2S_FORMAT_24		0x0080
-#define  OXYGEN_I2S_FORMAT_32		0x00c0
+#define  OXYGEN_I2S_BITS_MASK		0x00c0
+#define  OXYGEN_I2S_BITS_16		0x0000
+#define  OXYGEN_I2S_BITS_20		0x0040
+#define  OXYGEN_I2S_BITS_24		0x0080
+#define  OXYGEN_I2S_BITS_32		0x00c0
 
 #define OXYGEN_I2S_A_FORMAT		0x62
 #define OXYGEN_I2S_B_FORMAT		0x64
 #define OXYGEN_I2S_C_FORMAT		0x66
-/* OXYGEN_I2S_RATE_* and OXYGEN_I2S_FORMAT_* */
+/* like OXYGEN_I2S_MULTICH_FORMAT */
 
 #define OXYGEN_SPDIF_CONTROL		0x70
 #define  OXYGEN_SPDIF_OUT_ENABLE	0x00000002