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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: Yannick Fertre <yannick.fertre@foss.st.com> Signed-off-by: Philippe Cornu <philippe.cornu@foss.st.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220603134151.591997-1-yannick.fertre@foss.st.com
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1 changed files with 6 additions and 0 deletions
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@ -790,11 +790,17 @@ static void ltdc_crtc_atomic_disable(struct drm_crtc *crtc,
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{
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{
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struct ltdc_device *ldev = crtc_to_ltdc(crtc);
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struct ltdc_device *ldev = crtc_to_ltdc(crtc);
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struct drm_device *ddev = crtc->dev;
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struct drm_device *ddev = crtc->dev;
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int layer_index = 0;
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DRM_DEBUG_DRIVER("\n");
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DRM_DEBUG_DRIVER("\n");
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drm_crtc_vblank_off(crtc);
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drm_crtc_vblank_off(crtc);
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/* Disable all layers */
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for (layer_index = 0; layer_index < ldev->caps.nb_layers; layer_index++)
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regmap_write_bits(ldev->regmap, LTDC_L1CR + layer_index * LAY_OFS,
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LXCR_CLUTEN | LXCR_LEN, 0);
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/* disable IRQ */
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/* disable IRQ */
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regmap_clear_bits(ldev->regmap, LTDC_IER, IER_RRIE | IER_FUIE | IER_TERRIE);
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regmap_clear_bits(ldev->regmap, LTDC_IER, IER_RRIE | IER_FUIE | IER_TERRIE);
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