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Merge remote-tracking branch 'spi/topic/wr' into spi-next

This commit is contained in:
Mark Brown 2013-10-25 09:51:41 +01:00
parent 344a85117d 2359074225
commit 82f85cf98f
5 changed files with 31 additions and 12 deletions
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7
drivers/hwmon/adt7310.c
View File

@ -42,13 +42,8 @@ static const u8 adt7310_reg_table[] = {
static int adt7310_spi_read_word(struct device *dev, u8 reg)
{
struct spi_device *spi = to_spi_device(dev);
int ret;
ret = spi_w8r16(spi, AD7310_COMMAND(reg) | ADT7310_CMD_READ);
if (ret < 0)
return ret;
return be16_to_cpu((__force __be16)ret);
return spi_w8r16be(spi, AD7310_COMMAND(reg) | ADT7310_CMD_READ);
}
static int adt7310_spi_write_word(struct device *dev, u8 reg, u16 data)

3
drivers/staging/iio/meter/ade7753.c
View File

@ -86,7 +86,7 @@ static int ade7753_spi_read_reg_16(struct device *dev,
struct ade7753_state *st = iio_priv(indio_dev);
ssize_t ret;
ret = spi_w8r16(st->us, ADE7753_READ_REG(reg_address));
ret = spi_w8r16be(st->us, ADE7753_READ_REG(reg_address));
if (ret < 0) {
dev_err(&st->us->dev, "problem when reading 16 bit register 0x%02X",
reg_address);
@ -94,7 +94,6 @@ static int ade7753_spi_read_reg_16(struct device *dev,
}
*val = ret;
*val = be16_to_cpup(val);
return 0;
}

3
drivers/staging/iio/meter/ade7754.c
View File

@ -86,7 +86,7 @@ static int ade7754_spi_read_reg_16(struct device *dev,
struct ade7754_state *st = iio_priv(indio_dev);
int ret;
ret = spi_w8r16(st->us, ADE7754_READ_REG(reg_address));
ret = spi_w8r16be(st->us, ADE7754_READ_REG(reg_address));
if (ret < 0) {
dev_err(&st->us->dev, "problem when reading 16 bit register 0x%02X",
reg_address);
@ -94,7 +94,6 @@ static int ade7754_spi_read_reg_16(struct device *dev,
}
*val = ret;
*val = be16_to_cpup(val);
return 0;
}

3
drivers/staging/iio/meter/ade7759.c
View File

@ -86,7 +86,7 @@ static int ade7759_spi_read_reg_16(struct device *dev,
struct ade7759_state *st = iio_priv(indio_dev);
int ret;
ret = spi_w8r16(st->us, ADE7759_READ_REG(reg_address));
ret = spi_w8r16be(st->us, ADE7759_READ_REG(reg_address));
if (ret < 0) {
dev_err(&st->us->dev, "problem when reading 16 bit register 0x%02X",
reg_address);
@ -94,7 +94,6 @@ static int ade7759_spi_read_reg_16(struct device *dev,
}
*val = ret;
*val = be16_to_cpup(val);
return 0;
}

27
include/linux/spi/spi.h
View File

@ -853,6 +853,33 @@ static inline ssize_t spi_w8r16(struct spi_device *spi, u8 cmd)
return (status < 0) ? status : result;
}
/**
* spi_w8r16be - SPI synchronous 8 bit write followed by 16 bit big-endian read
* @spi: device with which data will be exchanged
* @cmd: command to be written before data is read back
* Context: can sleep
*
* This returns the (unsigned) sixteen bit number returned by the device in cpu
* endianness, or else a negative error code. Callable only from contexts that
* can sleep.
*
* This function is similar to spi_w8r16, with the exception that it will
* convert the read 16 bit data word from big-endian to native endianness.
*
*/
static inline ssize_t spi_w8r16be(struct spi_device *spi, u8 cmd)
{
ssize_t status;
__be16 result;
status = spi_write_then_read(spi, &cmd, 1, &result, 2);
if (status < 0)
return status;
return be16_to_cpu(result);
}
/*---------------------------------------------------------------------------*/
/*