IIO: BME280: Updates to Humidity readings need ctrl_reg write!

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The ctrl_reg register needs to be written after any write to
the humidity registers. The value written to the ctrl_reg register
does not necessarily need to change, but a write operation must
occur.

The regmap_update_bits functions will not write to a register
if the register value matches the value to be written. This saves
unnecessary bus operations.  The change in this patch forces a bus
write during the chip_config operation by switching to
regmap_write_bits.

This will fix issues where the Humidity Sensor Oversampling bits
are not updated after initialization.

Signed-off-by: Colin Parker <colin.parker@aclima.io>
Acked-by: Andreas Klinger <ak@it-klinger.de>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

...

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Colin Parker 2017-08-28 16:21:39 -07:00 • committed by Jonathan Cameron

parent e6f4794371

commit 4b1f0c31f9

1 changed files with 1 additions and 1 deletions

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drivers/iio/pressure/bmp280-core.c

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