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957fe62d7d
The rcar crtc depends on the clock provided from the rcar DSI bridge. When the DSI bridge is disabled, the clock is stopped, which causes the crtc disable to timeout. Also, while I have no issue with the enable, the documentation suggests to enable the DSI before the crtc so that the crtc has its clock enabled at enable time. This is also not done by the current driver. To fix this, we need to keep the DSI bridge enabled until the crtc has disabled itself, and enable the DSI bridge before crtc enables itself. Add functions rcar_mipi_dsi_pclk_enable and rcar_mipi_dsi_pclk_disable to the rcar DSI bridge driver which the rcar driver can use to enable/disable the DSI clock when needed. This is similar to what is already done with the rcar LVDS bridge. Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
31 lines
767 B
C
31 lines
767 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* R-Car DSI Encoder
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*
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* Copyright (C) 2022 Renesas Electronics Corporation
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*
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* Contact: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
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*/
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#ifndef __RCAR_MIPI_DSI_H__
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#define __RCAR_MIPI_DSI_H__
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struct drm_atomic_state;
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struct drm_bridge;
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#if IS_ENABLED(CONFIG_DRM_RCAR_MIPI_DSI)
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void rcar_mipi_dsi_pclk_enable(struct drm_bridge *bridge,
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struct drm_atomic_state *state);
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void rcar_mipi_dsi_pclk_disable(struct drm_bridge *bridge);
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#else
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static inline void rcar_mipi_dsi_pclk_enable(struct drm_bridge *bridge,
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struct drm_atomic_state *state)
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{
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}
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static inline void rcar_mipi_dsi_pclk_disable(struct drm_bridge *bridge)
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{
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}
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#endif /* CONFIG_DRM_RCAR_MIPI_DSI */
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#endif /* __RCAR_MIPI_DSI_H__ */
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