drivers/gpu/drm/tegra/hub.h

   1 /*
   2  * Copyright (C) 2017 NVIDIA CORPORATION.  All rights reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  */
   8
   9 #ifndef TEGRA_HUB_H
  10 #define TEGRA_HUB_H 1
  11
  12 #include <drm/drmP.h>
  13 #include <drm/drm_plane.h>
  14
  15 #include "plane.h"
  16
  17 struct tegra_dc;
  18
  19 struct tegra_windowgroup {
  20         unsigned int usecount;
  21         struct mutex lock;
  22
  23         unsigned int index;
  24         struct device *parent;
  25         struct reset_control *rst;
  26 };
  27
  28 struct tegra_shared_plane {
  29         struct tegra_plane base;
  30         struct tegra_windowgroup *wgrp;
  31 };
  32
  33 static inline struct tegra_shared_plane *
  34 to_tegra_shared_plane(struct drm_plane *plane)
  35 {
  36         return container_of(plane, struct tegra_shared_plane, base.base);
  37 }
  38
  39 struct tegra_display_hub_soc {
  40         unsigned int num_wgrps;
  41 };
  42
  43 struct tegra_display_hub {
  44         struct host1x_client client;
  45         struct clk *clk_disp;
  46         struct clk *clk_dsc;
  47         struct clk *clk_hub;
  48         struct reset_control *rst;
  49
  50         const struct tegra_display_hub_soc *soc;
  51         struct tegra_windowgroup *wgrps;
  52 };
  53
  54 static inline struct tegra_display_hub *
  55 to_tegra_display_hub(struct host1x_client *client)
  56 {
  57         return container_of(client, struct tegra_display_hub, client);
  58 }
  59
  60 struct tegra_dc;
  61 struct tegra_plane;
  62
  63 int tegra_display_hub_prepare(struct tegra_display_hub *hub);
  64 void tegra_display_hub_cleanup(struct tegra_display_hub *hub);
  65
  66 struct drm_plane *tegra_shared_plane_create(struct drm_device *drm,
  67                                             struct tegra_dc *dc,
  68                                             unsigned int wgrp,
  69                                             unsigned int index);
  70
  71 void tegra_display_hub_atomic_commit(struct drm_device *drm,
  72                                      struct drm_atomic_state *state);
  73
  74 #define DC_CMD_IHUB_COMMON_MISC_CTL 0x068
  75 #define  LATENCY_EVENT (1 << 3)
  76
  77 #define DC_DISP_IHUB_COMMON_DISPLAY_FETCH_METER 0x451
  78 #define  CURS_SLOTS(x) (((x) & 0xff) << 8)
  79 #define  WGRP_SLOTS(x) (((x) & 0xff) << 0)
  80
  81 #endif /* TEGRA_HUB_H */