media: mali-c55: Add support for RGB Gamma

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Add support for Gamma curve correction for the Mali C55 ISP.

Define a new block in the uAPI using the extensible v4l2-isp format and
implement support for configuring the RGB Gamma parameters in the
mali-c55 parameters handler.

While at it, rename the MALI_C55_REG_GAMMA_GAINS_[1|2] register name
to MALI_C55_REG_GAMMA_GAINS_[RG|B] and the
MALI_C55_REG_GAMMA_OFFSETS_[1|2] register name to
MALI_C55_REG_GAMMA_OFFSETS_[RG|B] to better clarify their intent.

Signed-off-by: Jacopo Mondi <jacopo.mondi+renesas@ideasonboard.com>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>

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Jacopo Mondi 2026-06-30 09:41:28 +02:00 • committed by Hans Verkuil

parent bb401df68c

commit 6962703102

3 changed files with 130 additions and 5 deletions

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include/uapi/linux/media/arm/mali-c55-config.h

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