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Dave Airlief453ba02008-11-07 14:05:41 -08001/*
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 Airlief453ba02008-11-07 14:05:41 -080036#include <linux/spinlock.h>
37#include <linux/types.h>
38#include <linux/idr.h>
39
40#include <linux/fb.h>
41
42struct 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 Wilson5c3b82e2009-02-11 13:25:09 +000056 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 Airlief453ba02008-11-07 14:05:41 -080059
60 /* Move the crtc on the current fb to the given position *optional* */
Chris Wilson5c3b82e2009-02-11 13:25:09 +000061 int (*mode_set_base)(struct drm_crtc *crtc, int x, int y,
62 struct drm_framebuffer *old_fb);
Dave Airlief453ba02008-11-07 14:05:41 -080063};
64
65struct 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 Barnes7bec7562009-02-23 16:09:34 -080078 struct drm_crtc *(*get_crtc)(struct drm_encoder *encoder);
Dave Airlief453ba02008-11-07 14:05:41 -080079 /* detect for DAC style encoders */
80 enum drm_connector_status (*detect)(struct drm_encoder *encoder,
81 struct drm_connector *connector);
82};
83
84struct 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 Barnes40a518d2009-01-12 12:05:32 -080091extern int drm_helper_probe_single_connector_modes(struct drm_connector *connector, uint32_t maxX, uint32_t maxY);
Dave Airlief453ba02008-11-07 14:05:41 -080092extern void drm_helper_disable_unused_functions(struct drm_device *dev);
93extern int drm_helper_hotplug_stage_two(struct drm_device *dev);
Jesse Barnes7a1fb5d2009-03-27 13:05:19 -070094extern bool drm_helper_initial_config(struct drm_device *dev);
Dave Airlief453ba02008-11-07 14:05:41 -080095extern int drm_crtc_helper_set_config(struct drm_mode_set *set);
96extern bool drm_crtc_helper_set_mode(struct drm_crtc *crtc,
97 struct drm_display_mode *mode,
Kristian Høgsberg3c4fdcf2008-12-17 22:14:46 -050098 int x, int y,
99 struct drm_framebuffer *old_fb);
Dave Airlief453ba02008-11-07 14:05:41 -0800100extern bool drm_helper_crtc_in_use(struct drm_crtc *crtc);
101
Keith Packardc9fb15f2009-05-30 20:42:28 -0700102extern void drm_helper_connector_dpms(struct drm_connector *connector, int mode);
103
Dave Airlief453ba02008-11-07 14:05:41 -0800104extern int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb,
105 struct drm_mode_fb_cmd *mode_cmd);
106
107static inline void drm_crtc_helper_add(struct drm_crtc *crtc,
108 const struct drm_crtc_helper_funcs *funcs)
109{
110 crtc->helper_private = (void *)funcs;
111}
112
113static inline void drm_encoder_helper_add(struct drm_encoder *encoder,
114 const struct drm_encoder_helper_funcs *funcs)
115{
116 encoder->helper_private = (void *)funcs;
117}
118
119static inline void drm_connector_helper_add(struct drm_connector *connector,
120 const struct drm_connector_helper_funcs *funcs)
121{
122 connector->helper_private = (void *)funcs;
123}
124
125extern int drm_helper_resume_force_mode(struct drm_device *dev);
126#endif