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Dave Airlie785b93e2009-08-28 15:46:53 +10001/*
2 * Copyright (c) 2006-2009 Red Hat Inc.
3 * Copyright (c) 2006-2008 Intel Corporation
4 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
5 *
6 * DRM framebuffer helper functions
7 *
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
17 *
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 * OF THIS SOFTWARE.
25 *
26 * Authors:
27 * Dave Airlie <airlied@linux.ie>
28 * Jesse Barnes <jesse.barnes@intel.com>
29 */
30#ifndef DRM_FB_HELPER_H
31#define DRM_FB_HELPER_H
32
Dave Airlie4abe3522010-03-30 05:34:18 +000033struct drm_fb_helper;
34
Jesse Barnes1a7aba72010-08-05 09:22:31 -050035#include <linux/kgdb.h>
36
Dave Airlie785b93e2009-08-28 15:46:53 +100037struct drm_fb_helper_crtc {
Dave Airlie785b93e2009-08-28 15:46:53 +100038 struct drm_mode_set mode_set;
Dave Airlie8be48d92010-03-30 05:34:14 +000039 struct drm_display_mode *desired_mode;
Dave Airlie785b93e2009-08-28 15:46:53 +100040};
41
Dave Airlie38651672010-03-30 05:34:13 +000042struct drm_fb_helper_surface_size {
43 u32 fb_width;
44 u32 fb_height;
45 u32 surface_width;
46 u32 surface_height;
47 u32 surface_bpp;
48 u32 surface_depth;
49};
50
Daniel Vetter207fd322013-01-20 22:13:14 +010051/**
52 * struct drm_fb_helper_funcs - driver callbacks for the fbdev emulation library
Ville Syrjälä7b979362013-05-08 16:38:34 +030053 * @gamma_set: Set the given gamma lut register on the given crtc.
54 * @gamma_get: Read the given gamma lut register on the given crtc, used to
55 * save the current lut when force-restoring the fbdev for e.g.
56 * kdbg.
57 * @fb_probe: Driver callback to allocate and initialize the fbdev info
58 * structure. Futhermore it also needs to allocate the drm
59 * framebuffer used to back the fbdev.
60 * @initial_config: Setup an initial fbdev display configuration
Daniel Vetter207fd322013-01-20 22:13:14 +010061 *
62 * Driver callbacks used by the fbdev emulation helper library.
63 */
Dave Airlie4abe3522010-03-30 05:34:18 +000064struct drm_fb_helper_funcs {
65 void (*gamma_set)(struct drm_crtc *crtc, u16 red, u16 green,
66 u16 blue, int regno);
67 void (*gamma_get)(struct drm_crtc *crtc, u16 *red, u16 *green,
68 u16 *blue, int regno);
69
70 int (*fb_probe)(struct drm_fb_helper *helper,
71 struct drm_fb_helper_surface_size *sizes);
Jesse Barnes11e17a02013-02-19 13:31:39 -080072 bool (*initial_config)(struct drm_fb_helper *fb_helper,
73 struct drm_fb_helper_crtc **crtcs,
74 struct drm_display_mode **modes,
75 bool *enabled, int width, int height);
Dave Airlie4abe3522010-03-30 05:34:18 +000076};
77
Dave Airlied50ba252009-09-23 14:44:08 +100078struct drm_fb_helper_connector {
Dave Airlie0b4c0f32010-03-30 05:34:15 +000079 struct drm_connector *connector;
Chris Wilson1794d252011-04-17 07:43:32 +010080 struct drm_cmdline_mode cmdline_mode;
Dave Airlied50ba252009-09-23 14:44:08 +100081};
82
Dave Airlie785b93e2009-08-28 15:46:53 +100083struct drm_fb_helper {
84 struct drm_framebuffer *fb;
85 struct drm_device *dev;
Dave Airlie785b93e2009-08-28 15:46:53 +100086 int crtc_count;
87 struct drm_fb_helper_crtc *crtc_info;
Dave Airlie0b4c0f32010-03-30 05:34:15 +000088 int connector_count;
89 struct drm_fb_helper_connector **connector_info;
Dave Airlie785b93e2009-08-28 15:46:53 +100090 struct drm_fb_helper_funcs *funcs;
Dave Airlie38651672010-03-30 05:34:13 +000091 struct fb_info *fbdev;
92 u32 pseudo_palette[17];
Dave Airlie785b93e2009-08-28 15:46:53 +100093 struct list_head kernel_fb_list;
Dave Airlie8be48d92010-03-30 05:34:14 +000094
Dave Airlie4abe3522010-03-30 05:34:18 +000095 /* we got a hotplug but fbdev wasn't running the console
96 delay until next set_par */
97 bool delayed_hotplug;
Dave Airlie785b93e2009-08-28 15:46:53 +100098};
99
Dave Airlie4abe3522010-03-30 05:34:18 +0000100int drm_fb_helper_init(struct drm_device *dev,
101 struct drm_fb_helper *helper, int crtc_count,
Dave Airlieeb1f8e42010-05-07 06:42:51 +0000102 int max_conn);
Dave Airlie4abe3522010-03-30 05:34:18 +0000103void drm_fb_helper_fini(struct drm_fb_helper *helper);
Dave Airlie785b93e2009-08-28 15:46:53 +1000104int drm_fb_helper_blank(int blank, struct fb_info *info);
105int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
106 struct fb_info *info);
107int drm_fb_helper_set_par(struct fb_info *info);
108int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
109 struct fb_info *info);
Dave Airlie785b93e2009-08-28 15:46:53 +1000110
Dave Airliee8e7a2b2011-04-21 22:18:32 +0100111bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper);
Dave Airlie38651672010-03-30 05:34:13 +0000112void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper,
Dave Airlie785b93e2009-08-28 15:46:53 +1000113 uint32_t fb_width, uint32_t fb_height);
Dave Airlie3632ef82011-01-15 09:27:00 +1000114void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
115 uint32_t depth);
116
Dave Airlie068143d2009-10-05 09:58:02 +1000117int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info);
Dave Airlied50ba252009-09-23 14:44:08 +1000118
Chris Wilson73943712011-04-22 11:03:57 +0100119int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper);
Dave Airlie4abe3522010-03-30 05:34:18 +0000120bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel);
Dave Airlie0b4c0f32010-03-30 05:34:15 +0000121int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper);
Jesse Barnes1a7aba72010-08-05 09:22:31 -0500122int drm_fb_helper_debug_enter(struct fb_info *info);
123int drm_fb_helper_debug_leave(struct fb_info *info);
Dave Airlie8be48d92010-03-30 05:34:14 +0000124
Dave Airlie785b93e2009-08-28 15:46:53 +1000125#endif