drivers/gpu/drm/rcar-du/rcar_du_lvdsenc.h

   1 /*
   2  * rcar_du_lvdsenc.h  --  R-Car Display Unit LVDS Encoder
   3  *
   4  * Copyright (C) 2013-2014 Renesas Electronics Corporation
   5  *
   6  * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  */
  13
  14 #ifndef __RCAR_DU_LVDSENC_H__
  15 #define __RCAR_DU_LVDSENC_H__
  16
  17 #include <linux/io.h>
  18 #include <linux/module.h>
  19
  20 struct rcar_drm_crtc;
  21 struct rcar_du_lvdsenc;
  22
  23 enum rcar_lvds_input {
  24         RCAR_LVDS_INPUT_DU0,
  25         RCAR_LVDS_INPUT_DU1,
  26         RCAR_LVDS_INPUT_DU2,
  27 };
  28
  29 /* Keep in sync with the LVDCR0.LVMD hardware register values. */
  30 enum rcar_lvds_mode {
  31         RCAR_LVDS_MODE_JEIDA = 0,
  32         RCAR_LVDS_MODE_MIRROR = 1,
  33         RCAR_LVDS_MODE_VESA = 4,
  34 };
  35
  36 #if IS_ENABLED(CONFIG_DRM_RCAR_LVDS)
  37 int rcar_du_lvdsenc_init(struct rcar_du_device *rcdu);
  38 void rcar_du_lvdsenc_set_mode(struct rcar_du_lvdsenc *lvds,
  39                               enum rcar_lvds_mode mode);
  40 int rcar_du_lvdsenc_enable(struct rcar_du_lvdsenc *lvds,
  41                            struct drm_crtc *crtc, bool enable);
  42 void rcar_du_lvdsenc_atomic_check(struct rcar_du_lvdsenc *lvds,
  43                                   struct drm_display_mode *mode);
  44 #else
  45 static inline int rcar_du_lvdsenc_init(struct rcar_du_device *rcdu)
  46 {
  47         return 0;
  48 }
  49 static inline void rcar_du_lvdsenc_set_mode(struct rcar_du_lvdsenc *lvds,
  50                                             enum rcar_lvds_mode mode)
  51 {
  52 }
  53 static inline int rcar_du_lvdsenc_enable(struct rcar_du_lvdsenc *lvds,
  54                                          struct drm_crtc *crtc, bool enable)
  55 {
  56         return 0;
  57 }
  58 static inline void rcar_du_lvdsenc_atomic_check(struct rcar_du_lvdsenc *lvds,
  59                                                 struct drm_display_mode *mode)
  60 {
  61 }
  62 #endif
  63
  64 #endif /* __RCAR_DU_LVDSENC_H__ */