media: atmel: atmel-isc-base: clamp wb gain coefficients

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White balance computed gains can overflow above the 13 bits hardware
coefficient that can be used, in some specific scenarios like a subexposure
from the sensor when the image is mostly black.
In this case the computed gain has to be clamped to the maximum value
allowed by the hardware.

Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Reviewed-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

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Eugen Hristev 2021-12-13 14:49:36 +01:00 • committed by Mauro Carvalho Chehab

parent 76c97b0bb8

commit 3f05011061

1 changed files with 4 additions and 0 deletions

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drivers/media/platform/atmel/atmel-isc-base.c

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