UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

iio: adc: max1027: Simplify the _set_trigger_state() helper 

The call to max1027_enable_trigger() is the same in both cases thanks to
the 'state' variable, so factorize a little bit to simplify the code and
explain why we call this helper.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20210921115408.66711-8-miquel.raynal@bootlin.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Miquel Raynal 2021-09-21 13:53:59 +02:00 committed by Jonathan Cameron
parent eaf57d50c6
commit c5a3962982
1 changed files with 10 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/iio/adc/max1027.c
View File

@ -410,11 +410,17 @@ static int max1027_set_cnvst_trigger_state(struct iio_trigger *trig, bool state)
struct max1027_state *st = iio_priv(indio_dev);
int ret;
if (state) {
ret = max1027_enable_trigger(indio_dev, state);
if (ret)
return ret;
/*
* In order to disable the convst trigger, start acquisition on
* conversion register write, which basically disables triggering
* conversions upon cnvst changes and thus has the effect of disabling
* the external hardware trigger.
*/
ret = max1027_enable_trigger(indio_dev, state);
if (ret)
return ret;
if (state) {
/*
* Scan from chan 0 to the highest requested channel.
* Include temperature on demand.
@ -427,11 +433,6 @@ static int max1027_set_cnvst_trigger_state(struct iio_trigger *trig, bool state)
ret = spi_write(st->spi, &st->reg, 1);
if (ret < 0)
return ret;
} else {
/* Start acquisition on conversion register write */
ret = max1027_enable_trigger(indio_dev, state);
if (ret)
return ret;
}
return 0;