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staging:iio:hmc5843: Introduce _set_range_gain()

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Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Peter Meerwald 2013-10-16 23:19:00 +01:00 committed by Jonathan Cameron
parent ca4c6172cd
commit f3f755197b
1 changed files with 17 additions and 12 deletions
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29
drivers/staging/iio/magnetometer/hmc5843.c
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@ -303,6 +303,20 @@ static int hmc5843_get_samp_freq_index(struct hmc5843_data *data,
return -EINVAL;
}
static int hmc5843_set_range_gain(struct hmc5843_data *data, u8 range)
{
int ret;
mutex_lock(&data->lock);
ret = i2c_smbus_write_byte_data(data->client, HMC5843_CONFIG_REG_B,
range << HMC5843_RANGE_GAIN_OFFSET);
if (ret >= 0)
data->range = range;
mutex_unlock(&data->lock);
return ret;
}
static ssize_t hmc5843_show_scale_avail(struct device *dev,
struct device_attribute *attr, char *buf)
{
@ -364,7 +378,7 @@ static int hmc5843_write_raw(struct iio_dev *indio_dev,
int val, int val2, long mask)
{
struct hmc5843_data *data = iio_priv(indio_dev);
int ret, rate, range;
int rate, range;
switch (mask) {
case IIO_CHAN_INFO_SAMP_FREQ:
@ -378,15 +392,7 @@ static int hmc5843_write_raw(struct iio_dev *indio_dev,
if (range < 0)
return -EINVAL;
range <<= HMC5843_RANGE_GAIN_OFFSET;
mutex_lock(&data->lock);
ret = i2c_smbus_write_byte_data(data->client,
HMC5843_CONFIG_REG_B, range);
if (ret >= 0)
data->range = range;
mutex_unlock(&data->lock);
return ret;
return hmc5843_set_range_gain(data, range);
default:
return -EINVAL;
}
@ -495,9 +501,8 @@ static void hmc5843_init(struct hmc5843_data *data)
{
hmc5843_set_meas_conf(data, HMC5843_MEAS_CONF_NORMAL);
hmc5843_set_samp_freq(data, HMC5843_RATE_DEFAULT);
hmc5843_set_range_gain(data, HMC5843_RANGE_GAIN_DEFAULT);
hmc5843_set_mode(data, HMC5843_MODE_CONVERSION_CONTINUOUS);
i2c_smbus_write_byte_data(data->client, HMC5843_CONFIG_REG_B,
HMC5843_RANGE_GAIN_DEFAULT);
}
static const struct iio_info hmc5843_info = {