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gerrit-public.fairphone.software / fp2-dev / kernel / msm / 7bec756c74b1a5079d5074144bb77a6b3e7d7783 / . / include / drm / drm_crtc_helper.h
blob: c7d4b2e606a5f73f5fbed9217449b16c504b7e4d [file] [log] [blame]
Dave Airlief453ba02008-11-07 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
36#include <linux/i2c.h>
37#include <linux/spinlock.h>
38#include <linux/types.h>
39#include <linux/idr.h>
40
41#include <linux/fb.h>
42
43struct drm_crtc_helper_funcs {
44 /*
45 * Control power levels on the CRTC. If the mode passed in is
46 * unsupported, the provider must use the next lowest power level.
47 */
48 void (*dpms)(struct drm_crtc *crtc, int mode);
49 void (*prepare)(struct drm_crtc *crtc);
50 void (*commit)(struct drm_crtc *crtc);
51
52 /* Provider can fixup or change mode timings before modeset occurs */
53 bool (*mode_fixup)(struct drm_crtc *crtc,
54 struct drm_display_mode *mode,
55 struct drm_display_mode *adjusted_mode);
56 /* Actually set the mode */
Chris Wilson5c3b82e2009-02-11 13:25:09 +0000[diff] [blame]57 int (*mode_set)(struct drm_crtc *crtc, struct drm_display_mode *mode,
58 struct drm_display_mode *adjusted_mode, int x, int y,
59 struct drm_framebuffer *old_fb);
Dave Airlief453ba02008-11-07 14:05:41 -0800[diff] [blame]60
61 /* Move the crtc on the current fb to the given position *optional* */
Chris Wilson5c3b82e2009-02-11 13:25:09 +0000[diff] [blame]62 int (*mode_set_base)(struct drm_crtc *crtc, int x, int y,
63 struct drm_framebuffer *old_fb);
Dave Airlief453ba02008-11-07 14:05:41 -0800[diff] [blame]64};
65
66struct drm_encoder_helper_funcs {
67 void (*dpms)(struct drm_encoder *encoder, int mode);
68 void (*save)(struct drm_encoder *encoder);
69 void (*restore)(struct drm_encoder *encoder);
70
71 bool (*mode_fixup)(struct drm_encoder *encoder,
72 struct drm_display_mode *mode,
73 struct drm_display_mode *adjusted_mode);
74 void (*prepare)(struct drm_encoder *encoder);
75 void (*commit)(struct drm_encoder *encoder);
76 void (*mode_set)(struct drm_encoder *encoder,
77 struct drm_display_mode *mode,
78 struct drm_display_mode *adjusted_mode);
Jesse Barnes7bec7562009-02-23 16:09:34 -0800[diff] [blame^]79 struct drm_crtc *(*get_crtc)(struct drm_encoder *encoder);
Dave Airlief453ba02008-11-07 14:05:41 -0800[diff] [blame]80 /* detect for DAC style encoders */
81 enum drm_connector_status (*detect)(struct drm_encoder *encoder,
82 struct drm_connector *connector);
83};
84
85struct drm_connector_helper_funcs {
86 int (*get_modes)(struct drm_connector *connector);
87 int (*mode_valid)(struct drm_connector *connector,
88 struct drm_display_mode *mode);
89 struct drm_encoder *(*best_encoder)(struct drm_connector *connector);
90};
91
Jesse Barnes40a518d2009-01-12 12:05:32 -0800[diff] [blame]92extern int drm_helper_probe_single_connector_modes(struct drm_connector *connector, uint32_t maxX, uint32_t maxY);
Dave Airlief453ba02008-11-07 14:05:41 -0800[diff] [blame]93extern void drm_helper_disable_unused_functions(struct drm_device *dev);
94extern int drm_helper_hotplug_stage_two(struct drm_device *dev);
95extern bool drm_helper_initial_config(struct drm_device *dev, bool can_grow);
96extern int drm_crtc_helper_set_config(struct drm_mode_set *set);
97extern bool drm_crtc_helper_set_mode(struct drm_crtc *crtc,
98 struct drm_display_mode *mode,
Kristian Høgsberg3c4fdcf2008-12-17 22:14:46 -0500[diff] [blame]99 int x, int y,
100 struct drm_framebuffer *old_fb);
Dave Airlief453ba02008-11-07 14:05:41 -0800[diff] [blame]101extern bool drm_helper_crtc_in_use(struct drm_crtc *crtc);
102
103extern int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb,
104 struct drm_mode_fb_cmd *mode_cmd);
105
106static inline void drm_crtc_helper_add(struct drm_crtc *crtc,
107 const struct drm_crtc_helper_funcs *funcs)
108{
109 crtc->helper_private = (void *)funcs;
110}
111
112static inline void drm_encoder_helper_add(struct drm_encoder *encoder,
113 const struct drm_encoder_helper_funcs *funcs)
114{
115 encoder->helper_private = (void *)funcs;
116}
117
118static inline void drm_connector_helper_add(struct drm_connector *connector,
119 const struct drm_connector_helper_funcs *funcs)
120{
121 connector->helper_private = (void *)funcs;
122}
123
124extern int drm_helper_resume_force_mode(struct drm_device *dev);
125#endif