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| author |   Clemens Ladisch <clemens@ladisch.de> | 2008-09-22 09:06:04 +0200 |
|---|---|---|
| committer | Clemens Ladisch <clemens@ladisch.de> | 2008-09-22 09:06:04 +0200 |
| commit | 4f50d2fd00da451261f51f28e929ebd161068422 (patch) | |
| tree | 209aa18811256bb2fdabd789ce9bc074e91e5d03 /sound/pci/oxygen | |
| parent | ALSA: oxygen: add self-documenting functions (diff) | |
| download | linux-dev-4f50d2fd00da451261f51f28e929ebd161068422.tar.xz linux-dev-4f50d2fd00da451261f51f28e929ebd161068422.zip | |
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/oxygen')
| -rw-r--r-- | sound/pci/oxygen/virtuoso.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/sound/pci/oxygen/virtuoso.c b/sound/pci/oxygen/virtuoso.c index 8f65aa80d3bc..853e8898bf9b 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); |