LXR linux/drivers/gpu/drm/drm_crtc_helper

   1/*
   2 * Copyright © 2016 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 shall be included in
  12 * all copies or substantial portions of the Software.
  13 *
  14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20 * OTHER DEALINGS IN THE SOFTWARE.
  21 */
  22
  23/*
  24 * This header file contains mode setting related functions and definitions
  25 * which are only used within the drm kms helper module as internal
  26 * implementation details and are not exported to drivers.
  27 */
  28
  29#include <drm/drm_connector.h>
  30#include <drm/drm_crtc.h>
  31#include <drm/drm_dp_helper.h>
  32#include <drm/drm_encoder.h>
  33#include <drm/drm_modes.h>
  34
  35/* drm_fb_helper.c */
  36#ifdef CONFIG_DRM_FBDEV_EMULATION
  37int drm_fb_helper_modinit(void);
  38#else
  39static inline int drm_fb_helper_modinit(void)
  40{
  41        return 0;
  42}
  43#endif
  44
  45/* drm_dp_aux_dev.c */
  46#ifdef CONFIG_DRM_DP_AUX_CHARDEV
  47int drm_dp_aux_dev_init(void);
  48void drm_dp_aux_dev_exit(void);
  49int drm_dp_aux_register_devnode(struct drm_dp_aux *aux);
  50void drm_dp_aux_unregister_devnode(struct drm_dp_aux *aux);
  51#else
  52static inline int drm_dp_aux_dev_init(void)
  53{
  54        return 0;
  55}
  56
  57static inline void drm_dp_aux_dev_exit(void)
  58{
  59}
  60
  61static inline int drm_dp_aux_register_devnode(struct drm_dp_aux *aux)
  62{
  63        return 0;
  64}
  65
  66static inline void drm_dp_aux_unregister_devnode(struct drm_dp_aux *aux)
  67{
  68}
  69#endif
  70
  71/* drm_probe_helper.c */
  72enum drm_mode_status drm_crtc_mode_valid(struct drm_crtc *crtc,
  73                                         const struct drm_display_mode *mode);
  74enum drm_mode_status drm_encoder_mode_valid(struct drm_encoder *encoder,
  75                                            const struct drm_display_mode *mode);
  76enum drm_mode_status drm_connector_mode_valid(struct drm_connector *connector,
  77                                              struct drm_display_mode *mode);
  78