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| author | Miquel Raynal <miquel.raynal@bootlin.com> | 2021-09-21 13:54:00 +0200 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2021-10-19 09:27:33 +0200 |
| commit | cba18232c4f80b64325e351a6d2264cbbfeacb81 (patch) | |
| tree | 1efc557ce6cd52c349da3e704b9ec054648919f7 /drivers/iio/adc/max1027.c | |
| parent | iio: adc: max1027: Simplify the _set_trigger_state() helper (diff) | |
| download | linux-cba18232c4f80b64325e351a6d2264cbbfeacb81.tar.xz linux-cba18232c4f80b64325e351a6d2264cbbfeacb81.zip | |
iio: adc: max1027: Ensure a default cnvst trigger configuration
We don't expect the (hardware) cnvst trigger to be enabled at boot time,
this is a user choice made in sysfs and there is a dedicated callback to
enable/disable this trigger. Hence, we can just ensure it is disabled in
the probe at initialization time and then assume that whenever a
->read_raw() call happens, the trigger has been disabled and conversions
will start on register write.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20210921115408.66711-9-miquel.raynal@bootlin.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/adc/max1027.c')
| -rw-r--r-- | drivers/iio/adc/max1027.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/iio/adc/max1027.c b/drivers/iio/adc/max1027.c index 66a040cbee35..fe5e9f95174b 100644 --- a/drivers/iio/adc/max1027.c +++ b/drivers/iio/adc/max1027.c @@ -303,10 +303,6 @@ static int max1027_read_single_value(struct iio_dev *indio_dev, return -EBUSY; } - ret = max1027_enable_trigger(indio_dev, false); - if (ret) - return ret; - /* Configure conversion register with the requested chan */ st->reg = MAX1027_CONV_REG | MAX1027_CHAN(chan->channel) | MAX1027_NOSCAN; @@ -558,6 +554,11 @@ static int max1027_probe(struct spi_device *spi) return ret; } + /* Assume conversion on register write for now */ + ret = max1027_enable_trigger(indio_dev, false); + if (ret) + return ret; + return devm_iio_device_register(&spi->dev, indio_dev); } |