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  1. /*
  2.  * Copyright © 2006 Keith Packard
  3.  * Copyright © 2007-2008 Dave Airlie
  4.  * Copyright © 2007-2008 Intel Corporation
  5.  *   Jesse Barnes <jesse.barnes@intel.com>
  6.  *
  7.  * Permission is hereby granted, free of charge, to any person obtaining a
  8.  * copy of this software and associated documentation files (the "Software"),
  9.  * to deal in the Software without restriction, including without limitation
  10.  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11.  * and/or sell copies of the Software, and to permit persons to whom the
  12.  * Software is furnished to do so, subject to the following conditions:
  13.  *
  14.  * The above copyright notice and this permission notice shall be included in
  15.  * all copies or substantial portions of the Software.
  16.  *
  17.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20.  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  21.  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22.  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  23.  * OTHER DEALINGS IN THE SOFTWARE.
  24.  */
  25.  
  26. /*
  27.  * The DRM mode setting helper functions are common code for drivers to use if
  28.  * they wish.  Drivers are not forced to use this code in their
  29.  * implementations but it would be useful if they code they do use at least
  30.  * provides a consistent interface and operation to userspace
  31.  */
  32.  
  33. #ifndef __DRM_CRTC_HELPER_H__
  34. #define __DRM_CRTC_HELPER_H__
  35.  
  36. #include <linux/spinlock.h>
  37. #include <linux/types.h>
  38. #include <linux/idr.h>
  39.  
  40. #include <linux/fb.h>
  41.  
  42. #include <drm/drm_crtc.h>
  43. #include <drm/drm_modeset_helper_vtables.h>
  44.  
  45. extern void drm_helper_disable_unused_functions(struct drm_device *dev);
  46. extern int drm_crtc_helper_set_config(struct drm_mode_set *set);
  47. extern bool drm_crtc_helper_set_mode(struct drm_crtc *crtc,
  48.                                      struct drm_display_mode *mode,
  49.                                      int x, int y,
  50.                                      struct drm_framebuffer *old_fb);
  51. extern void drm_helper_crtc_enable_color_mgmt(struct drm_crtc *crtc,
  52.                                               int degamma_lut_size,
  53.                                               int gamma_lut_size);
  54. extern bool drm_helper_crtc_in_use(struct drm_crtc *crtc);
  55. extern bool drm_helper_encoder_in_use(struct drm_encoder *encoder);
  56.  
  57. extern int drm_helper_connector_dpms(struct drm_connector *connector, int mode);
  58.  
  59. extern void drm_helper_move_panel_connectors_to_head(struct drm_device *);
  60.  
  61. extern void drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb,
  62.                                            const struct drm_mode_fb_cmd2 *mode_cmd);
  63.  
  64. extern void drm_helper_resume_force_mode(struct drm_device *dev);
  65.  
  66. int drm_helper_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode,
  67.                              struct drm_display_mode *adjusted_mode, int x, int y,
  68.                              struct drm_framebuffer *old_fb);
  69. int drm_helper_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
  70.                                   struct drm_framebuffer *old_fb);
  71.  
  72. /* drm_probe_helper.c */
  73. extern int drm_helper_probe_single_connector_modes(struct drm_connector
  74.                                                    *connector, uint32_t maxX,
  75.                                                    uint32_t maxY);
  76. extern void drm_kms_helper_poll_init(struct drm_device *dev);
  77. extern void drm_kms_helper_poll_fini(struct drm_device *dev);
  78. extern bool drm_helper_hpd_irq_event(struct drm_device *dev);
  79. extern void drm_kms_helper_hotplug_event(struct drm_device *dev);
  80.  
  81. extern void drm_kms_helper_poll_disable(struct drm_device *dev);
  82. extern void drm_kms_helper_poll_enable(struct drm_device *dev);
  83. extern void drm_kms_helper_poll_enable_locked(struct drm_device *dev);
  84.  
  85. #endif
  86.