Commit 52efe364 authored by Dave Stevenson's avatar Dave Stevenson
Browse files

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



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: c54619b0 ("drm/vc4: Add support for the BCM2711 HVS5")
Reviewed-by: default avatarMaxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240621152055.4180873-15-dave.stevenson@raspberrypi.com


Signed-off-by: default avatarDave Stevenson <dave.stevenson@raspberrypi.com>
parent dbe101b1

drivers/gpu/drm/vc4/vc4_hvs.c

+3 −0
Original line number Diff line number Diff line
@@ -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.