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
  29 /*
  30  * Drivers that don't allow primary plane scaling may pass this macro in place
  31  * of the min/max scale parameters of the update checker function.
  32  *
  33  * Due to src being in 16.16 fixed point and dest being in integer pixels,
  34  * 1<<16 represents no scaling.
  35  */
  36 #define DRM_PLANE_HELPER_NO_SCALING (1<<16)
  37
  38 /**
  39  * DOC: plane helpers
  40  *
  41  * Helper functions to assist with creation and handling of CRTC primary
  42  * planes.
  43  */
  44
  45 extern int drm_plane_helper_check_update(struct drm_plane *plane,
  46                                          struct drm_crtc *crtc,
  47                                          struct drm_framebuffer *fb,
  48                                          struct drm_rect *src,
  49                                          struct drm_rect *dest,
  50                                          const struct drm_rect *clip,
  51                                          int min_scale,
  52                                          int max_scale,
  53                                          bool can_position,
  54                                          bool can_update_disabled,
  55                                          bool *visible);
  56 extern int drm_primary_helper_update(struct drm_plane *plane,
  57                                      struct drm_crtc *crtc,
  58                                      struct drm_framebuffer *fb,
  59                                      int crtc_x, int crtc_y,
  60                                      unsigned int crtc_w, unsigned int crtc_h,
  61                                      uint32_t src_x, uint32_t src_y,
  62                                      uint32_t src_w, uint32_t src_h);
  63 extern int drm_primary_helper_disable(struct drm_plane *plane);
  64 extern void drm_primary_helper_destroy(struct drm_plane *plane);
  65 extern const struct drm_plane_funcs drm_primary_helper_funcs;
  66 extern struct drm_plane *drm_primary_helper_create_plane(struct drm_device *dev,
  67                                                          const uint32_t *formats,
  68                                                          int num_formats);
  69
  70
  71 #endif