Messages in this thread Patch in this message | | | From | Stefan Brüns <> | Subject | [PATCH v2 1/4] iio: light: vl6180: Move range check to integration time setter, cleanup | Date | Sun, 24 Sep 2017 00:58:21 +0200 |
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This improves code uniformity (range checks for als_gain are also done in the setter). Also unmangle rounding and calculation of register value.
The calculated integration time it_ms is required in the next patch of the series.
Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> --- v2: removed redundant parenthesis
drivers/iio/light/vl6180.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-)
diff --git a/drivers/iio/light/vl6180.c b/drivers/iio/light/vl6180.c index 6e25b724d941..68b9babfd298 100644 --- a/drivers/iio/light/vl6180.c +++ b/drivers/iio/light/vl6180.c @@ -386,16 +386,21 @@ static int vl6180_set_als_gain(struct vl6180_data *data, int val, int val2) return -EINVAL; } -static int vl6180_set_it(struct vl6180_data *data, int val2) +static int vl6180_set_it(struct vl6180_data *data, int val, int val2) { - int ret; + int ret, it_ms; + + it_ms = (val2 + 500) / 1000; /* round to ms */ + if (val != 0 || it_ms < 1 || it_ms > 512) + return -EINVAL; mutex_lock(&data->lock); ret = vl6180_hold(data, true); if (ret < 0) goto fail; - ret = vl6180_write_word(data->client, VL6180_ALS_IT, - (val2 - 500) / 1000); /* write value in ms */ + + ret = vl6180_write_word(data->client, VL6180_ALS_IT, it_ms - 1); + fail: vl6180_hold(data, false); mutex_unlock(&data->lock); @@ -411,15 +416,14 @@ static int vl6180_write_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_INT_TIME: - if (val != 0 || val2 < 500 || val2 >= 512500) - return -EINVAL; + return vl6180_set_it(data, val, val2); - return vl6180_set_it(data, val2); case IIO_CHAN_INFO_HARDWAREGAIN: if (chan->type != IIO_LIGHT) return -EINVAL; return vl6180_set_als_gain(data, val, val2); + default: return -EINVAL; } -- 2.14.1
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