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  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.                                   int min_scale,
  50.                                   int max_scale,
  51.                                   bool can_position,
  52.                                   bool can_update_disabled,
  53.                                   bool *visible);
  54. int drm_primary_helper_update(struct drm_plane *plane,
  55.                               struct drm_crtc *crtc,
  56.                               struct drm_framebuffer *fb,
  57.                               int crtc_x, int crtc_y,
  58.                               unsigned int crtc_w, unsigned int crtc_h,
  59.                               uint32_t src_x, uint32_t src_y,
  60.                               uint32_t src_w, uint32_t src_h);
  61. int drm_primary_helper_disable(struct drm_plane *plane);
  62. void drm_primary_helper_destroy(struct drm_plane *plane);
  63. extern const struct drm_plane_funcs drm_primary_helper_funcs;
  64.  
  65. int drm_plane_helper_update(struct drm_plane *plane, struct drm_crtc *crtc,
  66.                             struct drm_framebuffer *fb,
  67.                             int crtc_x, int crtc_y,
  68.                             unsigned int crtc_w, unsigned int crtc_h,
  69.                             uint32_t src_x, uint32_t src_y,
  70.                             uint32_t src_w, uint32_t src_h);
  71. int drm_plane_helper_disable(struct drm_plane *plane);
  72.  
  73. /* For use by drm_crtc_helper.c */
  74. int drm_plane_helper_commit(struct drm_plane *plane,
  75.                             struct drm_plane_state *plane_state,
  76.                             struct drm_framebuffer *old_fb);
  77. #endif
  78.