[PATCH v7 2/5] iio: vcnl4000: Factorize data reading and writing.

Mathieu Othacehe
2020-05-03T09:32:41Z

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>
---
drivers/iio/light/vcnl4000.c | 24 ++++++++++++++++++++++--
1 file changed, 22 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/light/vcnl4000.c b/drivers/iio/light/vcnl4000.c
index e5f86bd00fb0..b976e29f2fda 100644
--- a/drivers/iio/light/vcnl4000.c
+++ b/drivers/iio/light/vcnl4000.c
@@ -215,6 +215,27 @@ 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)
{
@@ -245,12 +266,11 @@ 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;

--
2.26.0