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| author | Mathieu Othacehe <m.othacehe@gmail.com> | 2020-05-03 11:29:56 +0200 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2020-05-03 14:49:48 +0100 |
| commit | 816956c32d76b7c4fb932f9a5ebaa38ccf4fa62e (patch) | |
| tree | a5254b95a3ea75054c369fc6b1af132f6804bcde /drivers/iio | |
| parent | 18dfb5326370991c81a6d1ed6d1aeee055cb8c05 (diff) | |
| download | linux-stable-816956c32d76b7c4fb932f9a5ebaa38ccf4fa62e.tar.gz linux-stable-816956c32d76b7c4fb932f9a5ebaa38ccf4fa62e.tar.bz2 linux-stable-816956c32d76b7c4fb932f9a5ebaa38ccf4fa62e.zip | |
iio: vcnl4000: Factorize data reading and writing.
Factorize data reading in vcnl4000_measure into a vcnl4000_read_data
function. Also add a vcnl4000_write_data function.
Signed-off-by: Mathieu Othacehe <m.othacehe@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/light/vcnl4000.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/drivers/iio/light/vcnl4000.c b/drivers/iio/light/vcnl4000.c index 979746a7d411..15b7f983addc 100644 --- a/drivers/iio/light/vcnl4000.c +++ b/drivers/iio/light/vcnl4000.c @@ -216,6 +216,27 @@ static int vcnl4200_init(struct vcnl4000_data *data) return 0; }; +static int vcnl4000_read_data(struct vcnl4000_data *data, u8 data_reg, int *val) +{ + s32 ret; + + ret = i2c_smbus_read_word_swapped(data->client, data_reg); + if (ret < 0) + return ret; + + *val = ret; + return 0; +} + +static int vcnl4000_write_data(struct vcnl4000_data *data, u8 data_reg, int val) +{ + if (val > U16_MAX) + return -ERANGE; + + return i2c_smbus_write_word_swapped(data->client, data_reg, val); +} + + static int vcnl4000_measure(struct vcnl4000_data *data, u8 req_mask, u8 rdy_mask, u8 data_reg, int *val) { @@ -246,12 +267,11 @@ static int vcnl4000_measure(struct vcnl4000_data *data, u8 req_mask, goto fail; } - ret = i2c_smbus_read_word_swapped(data->client, data_reg); + ret = vcnl4000_read_data(data, data_reg, val); if (ret < 0) goto fail; mutex_unlock(&data->vcnl4000_lock); - *val = ret; return 0; |