drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h

   1 /*
   2  * Copyright (C) 2014 Traphandler
   3  * Copyright (C) 2014 Free Electrons
   4  * Copyright (C) 2014 Atmel
   5  *
   6  * Author: Jean-Jacques Hiblot <jjhiblot@traphandler.com>
   7  * Author: Boris BREZILLON <boris.brezillon@free-electrons.com>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU General Public License version 2 as published by
  11  * the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope that it will be useful, but WITHOUT
  14  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  16  * more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along with
  19  * this program.  If not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22 #ifndef DRM_ATMEL_HLCDC_H
  23 #define DRM_ATMEL_HLCDC_H
  24
  25 #include <linux/clk.h>
  26 #include <linux/irqdomain.h>
  27 #include <linux/pwm.h>
  28
  29 #include <drm/drm_atomic.h>
  30 #include <drm/drm_atomic_helper.h>
  31 #include <drm/drm_crtc.h>
  32 #include <drm/drm_crtc_helper.h>
  33 #include <drm/drm_fb_cma_helper.h>
  34 #include <drm/drm_gem_cma_helper.h>
  35 #include <drm/drm_panel.h>
  36 #include <drm/drm_plane_helper.h>
  37 #include <drm/drmP.h>
  38
  39 #include "atmel_hlcdc_layer.h"
  40
  41 #define ATMEL_HLCDC_MAX_LAYERS          5
  42
  43 /**
  44  * Atmel HLCDC Display Controller description structure.
  45  *
  46  * This structure describe the HLCDC IP capabilities and depends on the
  47  * HLCDC IP version (or Atmel SoC family).
  48  *
  49  * @min_width: minimum width supported by the Display Controller
  50  * @min_height: minimum height supported by the Display Controller
  51  * @max_width: maximum width supported by the Display Controller
  52  * @max_height: maximum height supported by the Display Controller
  53  * @layers: a layer description table describing available layers
  54  * @nlayers: layer description table size
  55  */
  56 struct atmel_hlcdc_dc_desc {
  57         int min_width;
  58         int min_height;
  59         int max_width;
  60         int max_height;
  61         const struct atmel_hlcdc_layer_desc *layers;
  62         int nlayers;
  63 };
  64
  65 /**
  66  * Atmel HLCDC Plane properties.
  67  *
  68  * This structure stores plane property definitions.
  69  *
  70  * @alpha: alpha blending (or transparency) property
  71  * @rotation: rotation property
  72  */
  73 struct atmel_hlcdc_plane_properties {
  74         struct drm_property *alpha;
  75 };
  76
  77 /**
  78  * Atmel HLCDC Plane.
  79  *
  80  * @base: base DRM plane structure
  81  * @layer: HLCDC layer structure
  82  * @properties: pointer to the property definitions structure
  83  * @rotation: current rotation status
  84  */
  85 struct atmel_hlcdc_plane {
  86         struct drm_plane base;
  87         struct atmel_hlcdc_layer layer;
  88         struct atmel_hlcdc_plane_properties *properties;
  89 };
  90
  91 static inline struct atmel_hlcdc_plane *
  92 drm_plane_to_atmel_hlcdc_plane(struct drm_plane *p)
  93 {
  94         return container_of(p, struct atmel_hlcdc_plane, base);
  95 }
  96
  97 static inline struct atmel_hlcdc_plane *
  98 atmel_hlcdc_layer_to_plane(struct atmel_hlcdc_layer *l)
  99 {
 100         return container_of(l, struct atmel_hlcdc_plane, layer);
 101 }
 102
 103 /**
 104  * Atmel HLCDC Planes.
 105  *
 106  * This structure stores the instantiated HLCDC Planes and can be accessed by
 107  * the HLCDC Display Controller or the HLCDC CRTC.
 108  *
 109  * @primary: primary plane
 110  * @cursor: hardware cursor plane
 111  * @overlays: overlay plane table
 112  * @noverlays: number of overlay planes
 113  */
 114 struct atmel_hlcdc_planes {
 115         struct atmel_hlcdc_plane *primary;
 116         struct atmel_hlcdc_plane *cursor;
 117         struct atmel_hlcdc_plane **overlays;
 118         int noverlays;
 119 };
 120
 121 /**
 122  * Atmel HLCDC Display Controller.
 123  *
 124  * @desc: HLCDC Display Controller description
 125  * @hlcdc: pointer to the atmel_hlcdc structure provided by the MFD device
 126  * @fbdev: framebuffer device attached to the Display Controller
 127  * @crtc: CRTC provided by the display controller
 128  * @planes: instantiated planes
 129  * @layers: active HLCDC layer
 130  * @wq: display controller workqueue
 131  */
 132 struct atmel_hlcdc_dc {
 133         const struct atmel_hlcdc_dc_desc *desc;
 134         struct atmel_hlcdc *hlcdc;
 135         struct drm_fbdev_cma *fbdev;
 136         struct drm_crtc *crtc;
 137         struct atmel_hlcdc_planes *planes;
 138         struct atmel_hlcdc_layer *layers[ATMEL_HLCDC_MAX_LAYERS];
 139         struct workqueue_struct *wq;
 140 };
 141
 142 extern struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_formats;
 143 extern struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_and_yuv_formats;
 144
 145 int atmel_hlcdc_dc_mode_valid(struct atmel_hlcdc_dc *dc,
 146                               struct drm_display_mode *mode);
 147
 148 struct atmel_hlcdc_planes *
 149 atmel_hlcdc_create_planes(struct drm_device *dev);
 150
 151 int atmel_hlcdc_plane_prepare_disc_area(struct drm_crtc_state *c_state);
 152
 153 void atmel_hlcdc_crtc_irq(struct drm_crtc *c);
 154
 155 void atmel_hlcdc_crtc_suspend(struct drm_crtc *crtc);
 156 void atmel_hlcdc_crtc_resume(struct drm_crtc *crtc);
 157
 158 int atmel_hlcdc_crtc_create(struct drm_device *dev);
 159
 160 int atmel_hlcdc_create_outputs(struct drm_device *dev);
 161
 162 #endif /* DRM_ATMEL_HLCDC_H */