diff options
Diffstat (limited to 'sound/soc/soc-cache.c')
| -rw-r--r-- | sound/soc/soc-cache.c | 198 |
1 files changed, 163 insertions, 35 deletions
diff --git a/sound/soc/soc-cache.c b/sound/soc/soc-cache.c index f6b0d28..d214f02 100644 --- a/sound/soc/soc-cache.c +++ b/sound/soc/soc-cache.c @@ -19,8 +19,15 @@ static unsigned int snd_soc_4_12_read(struct snd_soc_codec *codec, unsigned int reg) { u16 *cache = codec->reg_cache; - if (reg >= codec->reg_cache_size) - return -1; + + if (reg >= codec->driver->reg_cache_size || + snd_soc_codec_volatile_register(codec, reg)) { + if (codec->cache_only) + return -1; + + return codec->hw_read(codec, reg); + } + return cache[reg]; } @@ -31,13 +38,12 @@ static int snd_soc_4_12_write(struct snd_soc_codec *codec, unsigned int reg, u8 data[2]; int ret; - BUG_ON(codec->volatile_register); - data[0] = (reg << 4) | ((value >> 8) & 0x000f); data[1] = value & 0x00ff; - if (reg < codec->reg_cache_size) - cache[reg] = value; + if (!snd_soc_codec_volatile_register(codec, reg) && + reg < codec->driver->reg_cache_size) + cache[reg] = value; if (codec->cache_only) { codec->cache_sync = 1; @@ -89,8 +95,15 @@ static unsigned int snd_soc_7_9_read(struct snd_soc_codec *codec, unsigned int reg) { u16 *cache = codec->reg_cache; - if (reg >= codec->reg_cache_size) - return -1; + + if (reg >= codec->driver->reg_cache_size || + snd_soc_codec_volatile_register(codec, reg)) { + if (codec->cache_only) + return -1; + + return codec->hw_read(codec, reg); + } + return cache[reg]; } @@ -101,13 +114,12 @@ static int snd_soc_7_9_write(struct snd_soc_codec *codec, unsigned int reg, u8 data[2]; int ret; - BUG_ON(codec->volatile_register); - data[0] = (reg << 1) | ((value >> 8) & 0x0001); data[1] = value & 0x00ff; - if (reg < codec->reg_cache_size) - cache[reg] = value; + if (!snd_soc_codec_volatile_register(codec, reg) && + reg < codec->driver->reg_cache_size) + cache[reg] = value; if (codec->cache_only) { codec->cache_sync = 1; @@ -161,14 +173,13 @@ static int snd_soc_8_8_write(struct snd_soc_codec *codec, unsigned int reg, u8 *cache = codec->reg_cache; u8 data[2]; - BUG_ON(codec->volatile_register); - reg &= 0xff; data[0] = reg; data[1] = value & 0xff; - if (reg < codec->reg_cache_size) - cache[reg] = value; + if (!snd_soc_codec_volatile_register(codec, reg) && + reg < codec->driver->reg_cache_size) + cache[reg] = value; if (codec->cache_only) { codec->cache_sync = 1; @@ -187,12 +198,49 @@ static unsigned int snd_soc_8_8_read(struct snd_soc_codec *codec, unsigned int reg) { u8 *cache = codec->reg_cache; + reg &= 0xff; - if (reg >= codec->reg_cache_size) - return -1; + if (reg >= codec->driver->reg_cache_size || + snd_soc_codec_volatile_register(codec, reg)) { + if (codec->cache_only) + return -1; + + return codec->hw_read(codec, reg); + } + return cache[reg]; } +#if defined(CONFIG_SPI_MASTER) +static int snd_soc_8_8_spi_write(void *control_data, const char *data, + int len) +{ + struct spi_device *spi = control_data; + struct spi_transfer t; + struct spi_message m; + u8 msg[2]; + + if (len <= 0) + return 0; + + msg[0] = data[0]; + msg[1] = data[1]; + + spi_message_init(&m); + memset(&t, 0, (sizeof t)); + + t.tx_buf = &msg[0]; + t.len = len; + + spi_message_add_tail(&t, &m); + spi_sync(spi, &m); + + return len; +} +#else +#define snd_soc_8_8_spi_write NULL +#endif + static int snd_soc_8_16_write(struct snd_soc_codec *codec, unsigned int reg, unsigned int value) { @@ -203,9 +251,9 @@ static int snd_soc_8_16_write(struct snd_soc_codec *codec, unsigned int reg, data[1] = (value >> 8) & 0xff; data[2] = value & 0xff; - if (!snd_soc_codec_volatile_register(codec, reg) - && reg < codec->reg_cache_size) - reg_cache[reg] = value; + if (!snd_soc_codec_volatile_register(codec, reg) && + reg < codec->driver->reg_cache_size) + reg_cache[reg] = value; if (codec->cache_only) { codec->cache_sync = 1; @@ -225,10 +273,10 @@ static unsigned int snd_soc_8_16_read(struct snd_soc_codec *codec, { u16 *cache = codec->reg_cache; - if (reg >= codec->reg_cache_size || + if (reg >= codec->driver->reg_cache_size || snd_soc_codec_volatile_register(codec, reg)) { if (codec->cache_only) - return -EINVAL; + return -1; return codec->hw_read(codec, reg); } else { @@ -236,6 +284,37 @@ static unsigned int snd_soc_8_16_read(struct snd_soc_codec *codec, } } +#if defined(CONFIG_SPI_MASTER) +static int snd_soc_8_16_spi_write(void *control_data, const char *data, + int len) +{ + struct spi_device *spi = control_data; + struct spi_transfer t; + struct spi_message m; + u8 msg[3]; + + if (len <= 0) + return 0; + + msg[0] = data[0]; + msg[1] = data[1]; + msg[2] = data[2]; + + spi_message_init(&m); + memset(&t, 0, (sizeof t)); + + t.tx_buf = &msg[0]; + t.len = len; + + spi_message_add_tail(&t, &m); + spi_sync(spi, &m); + + return len; +} +#else +#define snd_soc_8_16_spi_write NULL +#endif + #if defined(CONFIG_I2C) || (defined(CONFIG_I2C_MODULE) && defined(MODULE)) static unsigned int snd_soc_8_8_read_i2c(struct snd_soc_codec *codec, unsigned int r) @@ -344,8 +423,14 @@ static unsigned int snd_soc_16_8_read(struct snd_soc_codec *codec, u8 *cache = codec->reg_cache; reg &= 0xff; - if (reg >= codec->reg_cache_size) - return -1; + if (reg >= codec->driver->reg_cache_size || + snd_soc_codec_volatile_register(codec, reg)) { + if (codec->cache_only) + return -1; + + return codec->hw_read(codec, reg); + } + return cache[reg]; } @@ -356,15 +441,14 @@ static int snd_soc_16_8_write(struct snd_soc_codec *codec, unsigned int reg, u8 data[3]; int ret; - BUG_ON(codec->volatile_register); - data[0] = (reg >> 8) & 0xff; data[1] = reg & 0xff; data[2] = value; reg &= 0xff; - if (reg < codec->reg_cache_size) - cache[reg] = value; + if (!snd_soc_codec_volatile_register(codec, reg) && + reg < codec->driver->reg_cache_size) + cache[reg] = value; if (codec->cache_only) { codec->cache_sync = 1; @@ -452,10 +536,10 @@ static unsigned int snd_soc_16_16_read(struct snd_soc_codec *codec, { u16 *cache = codec->reg_cache; - if (reg >= codec->reg_cache_size || + if (reg >= codec->driver->reg_cache_size || snd_soc_codec_volatile_register(codec, reg)) { if (codec->cache_only) - return -EINVAL; + return -1; return codec->hw_read(codec, reg); } @@ -475,8 +559,9 @@ static int snd_soc_16_16_write(struct snd_soc_codec *codec, unsigned int reg, data[2] = (value >> 8) & 0xff; data[3] = value & 0xff; - if (reg < codec->reg_cache_size) - cache[reg] = value; + if (!snd_soc_codec_volatile_register(codec, reg) && + reg < codec->driver->reg_cache_size) + cache[reg] = value; if (codec->cache_only) { codec->cache_sync = 1; @@ -494,6 +579,38 @@ static int snd_soc_16_16_write(struct snd_soc_codec *codec, unsigned int reg, return -EIO; } +#if defined(CONFIG_SPI_MASTER) +static int snd_soc_16_16_spi_write(void *control_data, const char *data, + int len) +{ + struct spi_device *spi = control_data; + struct spi_transfer t; + struct spi_message m; + u8 msg[4]; + + if (len <= 0) + return 0; + + msg[0] = data[0]; + msg[1] = data[1]; + msg[2] = data[2]; + msg[3] = data[3]; + + spi_message_init(&m); + memset(&t, 0, (sizeof t)); + + t.tx_buf = &msg[0]; + t.len = len; + + spi_message_add_tail(&t, &m); + spi_sync(spi, &m); + + return len; +} +#else +#define snd_soc_16_16_spi_write NULL +#endif + static struct { int addr_bits; int data_bits; @@ -516,11 +633,13 @@ static struct { .addr_bits = 8, .data_bits = 8, .write = snd_soc_8_8_write, .read = snd_soc_8_8_read, .i2c_read = snd_soc_8_8_read_i2c, + .spi_write = snd_soc_8_8_spi_write, }, { .addr_bits = 8, .data_bits = 16, .write = snd_soc_8_16_write, .read = snd_soc_8_16_read, .i2c_read = snd_soc_8_16_read_i2c, + .spi_write = snd_soc_8_16_spi_write, }, { .addr_bits = 16, .data_bits = 8, @@ -532,6 +651,7 @@ static struct { .addr_bits = 16, .data_bits = 16, .write = snd_soc_16_16_write, .read = snd_soc_16_16_read, .i2c_read = snd_soc_16_16_read_i2c, + .spi_write = snd_soc_16_16_spi_write, }, }; @@ -572,8 +692,8 @@ int snd_soc_codec_set_cache_io(struct snd_soc_codec *codec, return -EINVAL; } - codec->write = io_types[i].write; - codec->read = io_types[i].read; + codec->driver->write = io_types[i].write; + codec->driver->read = io_types[i].read; switch (control) { case SND_SOC_CUSTOM: @@ -585,11 +705,19 @@ int snd_soc_codec_set_cache_io(struct snd_soc_codec *codec, #endif if (io_types[i].i2c_read) codec->hw_read = io_types[i].i2c_read; + + codec->control_data = container_of(codec->dev, + struct i2c_client, + dev); break; case SND_SOC_SPI: if (io_types[i].spi_write) codec->hw_write = io_types[i].spi_write; + + codec->control_data = container_of(codec->dev, + struct spi_device, + dev); break; } |
