include/drm/drm_plane_helper.h

   1 /*
   2  * Copyright (C) 2011-2013 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  */
  23
  24 #ifndef DRM_PLANE_HELPER_H
  25 #define DRM_PLANE_HELPER_H
  26
  27 #include <drm/drm_rect.h>
  28 #include <drm/drm_crtc.h>
  29 #include <drm/drm_modeset_helper_vtables.h>
  30
  31 /*
  32  * Drivers that don't allow primary plane scaling may pass this macro in place
  33  * of the min/max scale parameters of the update checker function.
  34  *
  35  * Due to src being in 16.16 fixed point and dest being in integer pixels,
  36  * 1<<16 represents no scaling.
  37  */
  38 #define DRM_PLANE_HELPER_NO_SCALING (1<<16)
  39
  40 int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
  41                   const struct drm_crtc_funcs *funcs);
  42
  43 int drm_plane_helper_check_update(struct drm_plane *plane,
  44                                   struct drm_crtc *crtc,
  45                                   struct drm_framebuffer *fb,
  46                                   struct drm_rect *src,
  47                                   struct drm_rect *dest,
  48                                   const struct drm_rect *clip,
  49                                   unsigned int rotation,
  50                                   int min_scale,
  51                                   int max_scale,
  52                                   bool can_position,
  53                                   bool can_update_disabled,
  54                                   bool *visible);
  55 int drm_primary_helper_update(struct drm_plane *plane,
  56                               struct drm_crtc *crtc,
  57                               struct drm_framebuffer *fb,
  58                               int crtc_x, int crtc_y,
  59                               unsigned int crtc_w, unsigned int crtc_h,
  60                               uint32_t src_x, uint32_t src_y,
  61                               uint32_t src_w, uint32_t src_h);
  62 int drm_primary_helper_disable(struct drm_plane *plane);
  63 void drm_primary_helper_destroy(struct drm_plane *plane);
  64 extern const struct drm_plane_funcs drm_primary_helper_funcs;
  65
  66 int drm_plane_helper_update(struct drm_plane *plane, struct drm_crtc *crtc,
  67                             struct drm_framebuffer *fb,
  68                             int crtc_x, int crtc_y,
  69                             unsigned int crtc_w, unsigned int crtc_h,
  70                             uint32_t src_x, uint32_t src_y,
  71                             uint32_t src_w, uint32_t src_h);
  72 int drm_plane_helper_disable(struct drm_plane *plane);
  73
  74 /* For use by drm_crtc_helper.c */
  75 int drm_plane_helper_commit(struct drm_plane *plane,
  76                             struct drm_plane_state *plane_state,
  77                             struct drm_framebuffer *old_fb);
  78 #endif