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drm/vc4: hvs: Don't write gamma luts on 2711

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[ Upstream commit 52efe364d1968ee3e3ed45eb44eb924b63635315 ]

The gamma block has changed in 2711, therefore writing the lut
in vc4_hvs_lut_load is incorrect.

Whilst the gamma property isn't created for 2711, it is called
from vc4_hvs_init_channel, so abort if attempted.

Fixes: c54619b0bf ("drm/vc4: Add support for the BCM2711 HVS5")
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240621152055.4180873-15-dave.stevenson@raspberrypi.com
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dave Stevenson
2024-06-21 16:20:38 +01:00
committed by Greg Kroah-Hartman
parent 2ee46de426
commit 40c77e93cf
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/vc4/vc4_hvs.c
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@@ -222,6 +222,9 @@ static void vc4_hvs_lut_load(struct vc4_hvs *hvs,
if (!drm_dev_enter(drm, &idx))
return;
if (hvs->vc4->is_vc5)
return;
/* The LUT memory is laid out with each HVS channel in order,
* each of which takes 256 writes for R, 256 for G, then 256
* for B.