include/drm/drm_crtc_helper.h

   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 bool drm_helper_crtc_in_use(struct drm_crtc *crtc);
  52 extern bool drm_helper_encoder_in_use(struct drm_encoder *encoder);
  53
  54 extern int drm_helper_connector_dpms(struct drm_connector *connector, int mode);
  55
  56 extern void drm_helper_move_panel_connectors_to_head(struct drm_device *);
  57
  58 extern void drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb,
  59                                            const struct drm_mode_fb_cmd2 *mode_cmd);
  60
  61 extern void drm_helper_resume_force_mode(struct drm_device *dev);
  62
  63 int drm_helper_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode,
  64                              struct drm_display_mode *adjusted_mode, int x, int y,
  65                              struct drm_framebuffer *old_fb);
  66 int drm_helper_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
  67                                   struct drm_framebuffer *old_fb);
  68
  69 /* drm_probe_helper.c */
  70 extern int drm_helper_probe_single_connector_modes(struct drm_connector
  71                                                    *connector, uint32_t maxX,
  72                                                    uint32_t maxY);
  73 extern void drm_kms_helper_poll_init(struct drm_device *dev);
  74 extern void drm_kms_helper_poll_fini(struct drm_device *dev);
  75 extern bool drm_helper_hpd_irq_event(struct drm_device *dev);
  76 extern void drm_kms_helper_hotplug_event(struct drm_device *dev);
  77
  78 extern void drm_kms_helper_poll_disable(struct drm_device *dev);
  79 extern void drm_kms_helper_poll_enable(struct drm_device *dev);
  80 extern void drm_kms_helper_poll_enable_locked(struct drm_device *dev);
  81
  82 #endif