drivers/gpu/drm/renesas/rcar-du/rcar_lvds.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * R-Car LVDS Encoder
   4  *
   5  * Copyright (C) 2013-2018 Renesas Electronics Corporation
   6  *
   7  * Contact: Laurent Pinchart ([email protected])
   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_pclk_enable(struct drm_bridge *bridge, unsigned long freq,
  17                           bool dot_clk_only);
  18 void rcar_lvds_pclk_disable(struct drm_bridge *bridge, bool dot_clk_only);
  19 bool rcar_lvds_dual_link(struct drm_bridge *bridge);
  20 bool rcar_lvds_is_connected(struct drm_bridge *bridge);
  21 #else
  22 static inline int rcar_lvds_pclk_enable(struct drm_bridge *bridge,
  23                                         unsigned long freq, bool dot_clk_only)
  24 {
  25         return -ENOSYS;
  26 }
  27 static inline void rcar_lvds_pclk_disable(struct drm_bridge *bridge,
  28                                           bool dot_clock_only)
  29 {
  30 }
  31 static inline bool rcar_lvds_dual_link(struct drm_bridge *bridge)
  32 {
  33         return false;
  34 }
  35 static inline bool rcar_lvds_is_connected(struct drm_bridge *bridge)
  36 {
  37         return false;
  38 }
  39 #endif /* CONFIG_DRM_RCAR_LVDS */
  40
  41 #endif /* __RCAR_LVDS_H__ */