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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>
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c2bc4ff58d
commit
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1 changed files with 19 additions and 2 deletions
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@ -124,6 +124,7 @@ MODULE_DEVICE_TABLE(pci, xonar_ids);
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#define GPIO_DX_FRONT_PANEL 0x0002
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#define GPIO_DX_INPUT_ROUTE 0x0100
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#define I2C_DEVICE_PCM1796(i) (0x98 + ((i) << 1)) /* 10011, ADx=i, /W=0 */
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#define I2C_DEVICE_CS4398 0x9e /* 10011, AD1=1, AD0=1, /W=0 */
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#define I2C_DEVICE_CS4362A 0x30 /* 001100, AD0=0, /W=0 */
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@ -142,8 +143,8 @@ struct xonar_data {
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static void xonar_gpio_changed(struct oxygen *chip);
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static void pcm1796_write(struct oxygen *chip, unsigned int codec,
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u8 reg, u8 value)
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static inline void pcm1796_write_spi(struct oxygen *chip, unsigned int codec,
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u8 reg, u8 value)
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{
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/* maps ALSA channel pair number to SPI output */
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static const u8 codec_map[4] = {
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@ -157,6 +158,22 @@ static void pcm1796_write(struct oxygen *chip, unsigned int codec,
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(reg << 8) | value);
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}
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static inline void pcm1796_write_i2c(struct oxygen *chip, unsigned int codec,
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u8 reg, u8 value)
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{
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oxygen_write_i2c(chip, I2C_DEVICE_PCM1796(codec), reg, value);
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}
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static void pcm1796_write(struct oxygen *chip, unsigned int codec,
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u8 reg, u8 value)
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{
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if ((chip->model.function_flags & OXYGEN_FUNCTION_2WIRE_SPI_MASK) ==
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OXYGEN_FUNCTION_SPI)
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pcm1796_write_spi(chip, codec, reg, value);
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else
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pcm1796_write_i2c(chip, codec, reg, value);
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}
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static void cs4398_write(struct oxygen *chip, u8 reg, u8 value)
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{
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oxygen_write_i2c(chip, I2C_DEVICE_CS4398, reg, value);
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