Commit c4f218d4 authored by Yannick Fertre's avatar Yannick Fertre Committed by Philippe Cornu
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drm/stm: ltdc: disable all layers before crtc shutdown 



All plans must be disabled before the CRTC shutdown helping
the crtc to restart from a clean situation (without unwanted
planes already enable).

Signed-off-by: default avatarYannick Fertre <yannick.fertre@foss.st.com>
Signed-off-by: default avatarPhilippe Cornu <philippe.cornu@foss.st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220603134151.591997-1-yannick.fertre@foss.st.com
parent 6fde8eec

drivers/gpu/drm/stm/ltdc.c

+6 −0
Original line number Diff line number Diff line
@@ -790,11 +790,17 @@ static void ltdc_crtc_atomic_disable(struct drm_crtc *crtc, 
{

	struct ltdc_device *ldev = crtc_to_ltdc(crtc);

	struct drm_device *ddev = crtc->dev;

	int layer_index = 0;



	DRM_DEBUG_DRIVER("\n");



	drm_crtc_vblank_off(crtc);



	/* Disable all layers */

	for (layer_index = 0; layer_index < ldev->caps.nb_layers; layer_index++)

		regmap_write_bits(ldev->regmap, LTDC_L1CR + layer_index * LAY_OFS,

				  LXCR_CLUTEN | LXCR_LEN, 0);



	/* disable IRQ */

	regmap_clear_bits(ldev->regmap, LTDC_IER, IER_RRIE | IER_FUIE | IER_TERRIE);