1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * rcar_lvds.h  --  R-Car LVDS Encoder
4  *
5  * Copyright (C) 2013-2018 Renesas Electronics Corporation
6  *
7  * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
8  */
9 
10 #ifndef __RCAR_LVDS_H__
11 #define __RCAR_LVDS_H__
12 
13 struct drm_bridge;
14 
15 #if IS_ENABLED(CONFIG_DRM_RCAR_LVDS)
16 int rcar_lvds_clk_enable(struct drm_bridge *bridge, unsigned long freq);
17 void rcar_lvds_clk_disable(struct drm_bridge *bridge);
18 bool rcar_lvds_dual_link(struct drm_bridge *bridge);
19 bool rcar_lvds_is_connected(struct drm_bridge *bridge);
20 #else
rcar_lvds_clk_enable(struct drm_bridge * bridge,unsigned long freq)21 static inline int rcar_lvds_clk_enable(struct drm_bridge *bridge,
22 				       unsigned long freq)
23 {
24 	return -ENOSYS;
25 }
rcar_lvds_clk_disable(struct drm_bridge * bridge)26 static inline void rcar_lvds_clk_disable(struct drm_bridge *bridge) { }
rcar_lvds_dual_link(struct drm_bridge * bridge)27 static inline bool rcar_lvds_dual_link(struct drm_bridge *bridge)
28 {
29 	return false;
30 }
rcar_lvds_is_connected(struct drm_bridge * bridge)31 static inline bool rcar_lvds_is_connected(struct drm_bridge *bridge)
32 {
33 	return false;
34 }
35 #endif /* CONFIG_DRM_RCAR_LVDS */
36 
37 #endif /* __RCAR_LVDS_H__ */
38