drivers/gpu/drm/arc/arcpgu.h

   1 /*
   2  * ARC PGU DRM driver.
   3  *
   4  * Copyright (C) 2016 Synopsys, Inc. (www.synopsys.com)
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  */
  16
  17 #ifndef _ARCPGU_H_
  18 #define _ARCPGU_H_
  19
  20 struct arcpgu_drm_private {
  21         void __iomem            *regs;
  22         struct clk              *clk;
  23         struct drm_fbdev_cma    *fbdev;
  24         struct drm_framebuffer  *fb;
  25         struct drm_crtc         crtc;
  26         struct drm_plane        *plane;
  27 };
  28
  29 #define crtc_to_arcpgu_priv(x) container_of(x, struct arcpgu_drm_private, crtc)
  30
  31 static inline void arc_pgu_write(struct arcpgu_drm_private *arcpgu,
  32                                  unsigned int reg, u32 value)
  33 {
  34         iowrite32(value, arcpgu->regs + reg);
  35 }
  36
  37 static inline u32 arc_pgu_read(struct arcpgu_drm_private *arcpgu,
  38                                unsigned int reg)
  39 {
  40         return ioread32(arcpgu->regs + reg);
  41 }
  42
  43 int arc_pgu_setup_crtc(struct drm_device *dev);
  44 int arcpgu_drm_hdmi_init(struct drm_device *drm, struct device_node *np);
  45 int arcpgu_drm_sim_init(struct drm_device *drm, struct device_node *np);
  46 struct drm_fbdev_cma *arcpgu_fbdev_cma_init(struct drm_device *dev,
  47         unsigned int preferred_bpp, unsigned int num_crtc,
  48         unsigned int max_conn_count);
  49
  50 #endif