Commit 02fa62d4 authored by Yannick Fertre's avatar Yannick Fertre Committed by Raphael Gallais-Pou
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drm/stm: ltdc: reset plane transparency after plane disable 



The plane's opacity should be reseted while the plane
is disabled. It prevents from seeing a possible global
or layer background color set earlier.

Signed-off-by: default avatarYannick Fertre <yannick.fertre@foss.st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240712131344.98113-1-yannick.fertre@foss.st.com


Signed-off-by: default avatarRaphael Gallais-Pou <raphael.gallais-pou@foss.st.com>
parent d5070c9b

drivers/gpu/drm/stm/ltdc.c

+3 −0
Original line number Diff line number Diff line
@@ -1508,6 +1508,9 @@ static void ltdc_plane_atomic_disable(struct drm_plane *plane, 
	/* Disable layer */

	regmap_write_bits(ldev->regmap, LTDC_L1CR + lofs, LXCR_LEN | LXCR_CLUTEN |  LXCR_HMEN, 0);



	/* Reset the layer transparency to hide any related background color */

	regmap_write_bits(ldev->regmap, LTDC_L1CACR + lofs, LXCACR_CONSTA, 0x00);



	/* Commit shadow registers = update plane at next vblank */

	if (ldev->caps.plane_reg_shadow)

		regmap_write_bits(ldev->regmap, LTDC_L1RCR + lofs,