Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 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 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 36 | #include <linux/spinlock.h> |
| 37 | #include <linux/types.h> |
| 38 | #include <linux/idr.h> |
| 39 | |
| 40 | #include <linux/fb.h> |
| 41 | |
| 42 | struct drm_crtc_helper_funcs { |
| 43 | /* |
| 44 | * Control power levels on the CRTC. If the mode passed in is |
| 45 | * unsupported, the provider must use the next lowest power level. |
| 46 | */ |
| 47 | void (*dpms)(struct drm_crtc *crtc, int mode); |
| 48 | void (*prepare)(struct drm_crtc *crtc); |
| 49 | void (*commit)(struct drm_crtc *crtc); |
| 50 | |
| 51 | /* Provider can fixup or change mode timings before modeset occurs */ |
| 52 | bool (*mode_fixup)(struct drm_crtc *crtc, |
| 53 | struct drm_display_mode *mode, |
| 54 | struct drm_display_mode *adjusted_mode); |
| 55 | /* Actually set the mode */ |
Chris Wilson | 5c3b82e | 2009-02-11 13:25:09 +0000 | [diff] [blame] | 56 | int (*mode_set)(struct drm_crtc *crtc, struct drm_display_mode *mode, |
| 57 | struct drm_display_mode *adjusted_mode, int x, int y, |
| 58 | struct drm_framebuffer *old_fb); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 59 | |
| 60 | /* Move the crtc on the current fb to the given position *optional* */ |
Chris Wilson | 5c3b82e | 2009-02-11 13:25:09 +0000 | [diff] [blame] | 61 | int (*mode_set_base)(struct drm_crtc *crtc, int x, int y, |
| 62 | struct drm_framebuffer *old_fb); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 63 | }; |
| 64 | |
| 65 | struct drm_encoder_helper_funcs { |
| 66 | void (*dpms)(struct drm_encoder *encoder, int mode); |
| 67 | void (*save)(struct drm_encoder *encoder); |
| 68 | void (*restore)(struct drm_encoder *encoder); |
| 69 | |
| 70 | bool (*mode_fixup)(struct drm_encoder *encoder, |
| 71 | struct drm_display_mode *mode, |
| 72 | struct drm_display_mode *adjusted_mode); |
| 73 | void (*prepare)(struct drm_encoder *encoder); |
| 74 | void (*commit)(struct drm_encoder *encoder); |
| 75 | void (*mode_set)(struct drm_encoder *encoder, |
| 76 | struct drm_display_mode *mode, |
| 77 | struct drm_display_mode *adjusted_mode); |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 78 | struct drm_crtc *(*get_crtc)(struct drm_encoder *encoder); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 79 | /* detect for DAC style encoders */ |
| 80 | enum drm_connector_status (*detect)(struct drm_encoder *encoder, |
| 81 | struct drm_connector *connector); |
| 82 | }; |
| 83 | |
| 84 | struct drm_connector_helper_funcs { |
| 85 | int (*get_modes)(struct drm_connector *connector); |
| 86 | int (*mode_valid)(struct drm_connector *connector, |
| 87 | struct drm_display_mode *mode); |
| 88 | struct drm_encoder *(*best_encoder)(struct drm_connector *connector); |
| 89 | }; |
| 90 | |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 91 | extern int drm_helper_probe_single_connector_modes(struct drm_connector *connector, uint32_t maxX, uint32_t maxY); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 92 | extern void drm_helper_disable_unused_functions(struct drm_device *dev); |
| 93 | extern int drm_helper_hotplug_stage_two(struct drm_device *dev); |
| 94 | extern bool drm_helper_initial_config(struct drm_device *dev, bool can_grow); |
| 95 | extern int drm_crtc_helper_set_config(struct drm_mode_set *set); |
| 96 | extern bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, |
| 97 | struct drm_display_mode *mode, |
Kristian Høgsberg | 3c4fdcf | 2008-12-17 22:14:46 -0500 | [diff] [blame] | 98 | int x, int y, |
| 99 | struct drm_framebuffer *old_fb); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 100 | extern bool drm_helper_crtc_in_use(struct drm_crtc *crtc); |
| 101 | |
| 102 | extern int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
| 103 | struct drm_mode_fb_cmd *mode_cmd); |
| 104 | |
| 105 | static inline void drm_crtc_helper_add(struct drm_crtc *crtc, |
| 106 | const struct drm_crtc_helper_funcs *funcs) |
| 107 | { |
| 108 | crtc->helper_private = (void *)funcs; |
| 109 | } |
| 110 | |
| 111 | static inline void drm_encoder_helper_add(struct drm_encoder *encoder, |
| 112 | const struct drm_encoder_helper_funcs *funcs) |
| 113 | { |
| 114 | encoder->helper_private = (void *)funcs; |
| 115 | } |
| 116 | |
| 117 | static inline void drm_connector_helper_add(struct drm_connector *connector, |
| 118 | const struct drm_connector_helper_funcs *funcs) |
| 119 | { |
| 120 | connector->helper_private = (void *)funcs; |
| 121 | } |
| 122 | |
| 123 | extern int drm_helper_resume_force_mode(struct drm_device *dev); |
| 124 | #endif |