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iio: magnetometer: mmc35240: fix SET/RESET sequence

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The RESET operation invoked in the last instance will align
in the natural way all 3 axis and the chip top view.

Without this, north and south are swapped.

Signed-off-by: Viorel Suman <viorel.suman@intel.com>
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Viorel Suman 2015-07-14 17:56:54 +03:00 committed by Jonathan Cameron
parent 3ceaa2c207
commit 354c879dbd
1 changed files with 4 additions and 3 deletions
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7
drivers/iio/magnetometer/mmc35240.c
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@ -222,14 +222,15 @@ static int mmc35240_init(struct mmc35240_data *data)
/*
* make sure we restore sensor characteristics, by doing
* a RESET/SET sequence
* a SET/RESET sequence, the axis polarity being naturally
* aligned after RESET
*/
ret = mmc35240_hw_set(data, false);
ret = mmc35240_hw_set(data, true);
if (ret < 0)
return ret;
usleep_range(MMC53240_WAIT_SET_RESET, MMC53240_WAIT_SET_RESET + 1);
ret = mmc35240_hw_set(data, true);
ret = mmc35240_hw_set(data, false);
if (ret < 0)
return ret;