drivers/gpu/drm/mxsfb/mxsfb_drv.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright (C) 2016 Marek Vasut <marex@denx.de>
   4  *
   5  * i.MX23/i.MX28/i.MX6SX MXSFB LCD controller driver.
   6  */
   7
   8 #ifndef __MXSFB_DRV_H__
   9 #define __MXSFB_DRV_H__
  10
  11 #include <drm/drm_crtc.h>
  12 #include <drm/drm_device.h>
  13 #include <drm/drm_encoder.h>
  14 #include <drm/drm_plane.h>
  15
  16 struct clk;
  17
  18 struct mxsfb_devdata {
  19         unsigned int    transfer_count;
  20         unsigned int    cur_buf;
  21         unsigned int    next_buf;
  22         unsigned int    hs_wdth_mask;
  23         unsigned int    hs_wdth_shift;
  24         bool            has_overlay;
  25 };
  26
  27 struct mxsfb_drm_private {
  28         const struct mxsfb_devdata      *devdata;
  29
  30         void __iomem                    *base;  /* registers */
  31         struct clk                      *clk;
  32         struct clk                      *clk_axi;
  33         struct clk                      *clk_disp_axi;
  34
  35         struct drm_device               *drm;
  36         struct {
  37                 struct drm_plane        primary;
  38                 struct drm_plane        overlay;
  39         } planes;
  40         struct drm_crtc                 crtc;
  41         struct drm_encoder              encoder;
  42         struct drm_connector            *connector;
  43         struct drm_bridge               *bridge;
  44 };
  45
  46 static inline struct mxsfb_drm_private *
  47 to_mxsfb_drm_private(struct drm_device *drm)
  48 {
  49         return drm->dev_private;
  50 }
  51
  52 void mxsfb_enable_axi_clk(struct mxsfb_drm_private *mxsfb);
  53 void mxsfb_disable_axi_clk(struct mxsfb_drm_private *mxsfb);
  54
  55 int mxsfb_kms_init(struct mxsfb_drm_private *mxsfb);
  56
  57 #endif /* __MXSFB_DRV_H__ */