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authorClemens Ladisch <clemens@ladisch.de>2008-09-22 09:06:04 +0200
committerClemens Ladisch <clemens@ladisch.de>2008-09-22 09:06:04 +0200
commit4f50d2fd00da451261f51f28e929ebd161068422 (patch)
tree209aa18811256bb2fdabd789ce9bc074e91e5d03 /sound/pci
parentc2bc4ff58d7aabcf1fc96134200d685d796ae425 (diff)
ALSA: virtuoso: allow I2C-connected PCM1796
Add support for PCM1796 chips that are connected with an I2C bus instead of SPI. Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Diffstat (limited to 'sound/pci')
-rw-r--r--sound/pci/oxygen/virtuoso.c21
1 files changed, 19 insertions, 2 deletions
diff --git a/sound/pci/oxygen/virtuoso.c b/sound/pci/oxygen/virtuoso.c
index 8f65aa80d3b..853e8898bf9 100644
--- a/sound/pci/oxygen/virtuoso.c
+++ b/sound/pci/oxygen/virtuoso.c
@@ -124,6 +124,7 @@ MODULE_DEVICE_TABLE(pci, xonar_ids);
#define GPIO_DX_FRONT_PANEL 0x0002
#define GPIO_DX_INPUT_ROUTE 0x0100
+#define I2C_DEVICE_PCM1796(i) (0x98 + ((i) << 1)) /* 10011, ADx=i, /W=0 */
#define I2C_DEVICE_CS4398 0x9e /* 10011, AD1=1, AD0=1, /W=0 */
#define I2C_DEVICE_CS4362A 0x30 /* 001100, AD0=0, /W=0 */
@@ -142,8 +143,8 @@ struct xonar_data {
static void xonar_gpio_changed(struct oxygen *chip);
-static void pcm1796_write(struct oxygen *chip, unsigned int codec,
- u8 reg, u8 value)
+static inline void pcm1796_write_spi(struct oxygen *chip, unsigned int codec,
+ u8 reg, u8 value)
{
/* maps ALSA channel pair number to SPI output */
static const u8 codec_map[4] = {
@@ -157,6 +158,22 @@ static void pcm1796_write(struct oxygen *chip, unsigned int codec,
(reg << 8) | value);
}
+static inline void pcm1796_write_i2c(struct oxygen *chip, unsigned int codec,
+ u8 reg, u8 value)
+{
+ oxygen_write_i2c(chip, I2C_DEVICE_PCM1796(codec), reg, value);
+}
+
+static void pcm1796_write(struct oxygen *chip, unsigned int codec,
+ u8 reg, u8 value)
+{
+ if ((chip->model.function_flags & OXYGEN_FUNCTION_2WIRE_SPI_MASK) ==
+ OXYGEN_FUNCTION_SPI)
+ pcm1796_write_spi(chip, codec, reg, value);
+ else
+ pcm1796_write_i2c(chip, codec, reg, value);
+}
+
static void cs4398_write(struct oxygen *chip, u8 reg, u8 value)
{
oxygen_write_i2c(chip, I2C_DEVICE_CS4398, reg, value);