diff options
author | Dimitris Papastamos <dp@opensource.wolfsonmicro.com> | 2010-10-04 11:25:13 +0100 |
---|---|---|
committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-10-05 09:56:34 -0700 |
commit | f479fd93d4028afccf155dec736c6d49cde92571 (patch) | |
tree | fcb2e2ace000bd2590199ec839ca9cf90c79df2d /sound | |
parent | bb5a027026db86b0c676104b2e3f6cc4768d1ac0 (diff) | |
download | linux-3.10-f479fd93d4028afccf155dec736c6d49cde92571.tar.gz linux-3.10-f479fd93d4028afccf155dec736c6d49cde92571.tar.bz2 linux-3.10-f479fd93d4028afccf155dec736c6d49cde92571.zip |
ASoC: soc-cache: Add spi_write support for all I/O types
Ensure that all drivers that use SPI and I2C will work properly
by providing SPI write functions for all different I/O types.
Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound')
-rw-r--r-- | sound/soc/soc-cache.c | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/sound/soc/soc-cache.c b/sound/soc/soc-cache.c index 62f1e2b776c..d214f02cbb6 100644 --- a/sound/soc/soc-cache.c +++ b/sound/soc/soc-cache.c @@ -211,6 +211,36 @@ static unsigned int snd_soc_8_8_read(struct snd_soc_codec *codec, 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) { @@ -254,6 +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) @@ -518,6 +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; @@ -540,11 +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, @@ -556,6 +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, }, }; |