Rev 5270 | Rev 6936 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
1408 | serge | 1 | /* |
2 | * Copyright (c) 2006-2009 Red Hat Inc. |
||
3 | * Copyright (c) 2006-2008 Intel Corporation |
||
4 | * Copyright (c) 2007 Dave Airlie |
||
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 |
||
28 | * Jesse Barnes |
||
29 | */ |
||
30 | #ifndef DRM_FB_HELPER_H |
||
31 | #define DRM_FB_HELPER_H |
||
32 | |||
1964 | serge | 33 | struct drm_fb_helper; |
34 | |||
5056 | serge | 35 | #include |
1964 | serge | 36 | |
5270 | serge | 37 | struct drm_fb_offset { |
38 | int x, y; |
||
39 | }; |
||
40 | |||
1408 | serge | 41 | struct drm_fb_helper_crtc { |
42 | struct drm_mode_set mode_set; |
||
1964 | serge | 43 | struct drm_display_mode *desired_mode; |
5270 | serge | 44 | int x, y; |
1408 | serge | 45 | }; |
46 | |||
6082 | serge | 47 | /** |
48 | * struct drm_fb_helper_surface_size - describes fbdev size and scanout surface size |
||
49 | * @fb_width: fbdev width |
||
50 | * @fb_height: fbdev height |
||
51 | * @surface_width: scanout buffer width |
||
52 | * @surface_height: scanout buffer height |
||
53 | * @surface_bpp: scanout buffer bpp |
||
54 | * @surface_depth: scanout buffer depth |
||
55 | * |
||
56 | * Note that the scanout surface width/height may be larger than the fbdev |
||
57 | * width/height. In case of multiple displays, the scanout surface is sized |
||
58 | * according to the largest width/height (so it is large enough for all CRTCs |
||
59 | * to scanout). But the fbdev width/height is sized to the minimum width/ |
||
60 | * height of all the displays. This ensures that fbcon fits on the smallest |
||
61 | * of the attached displays. |
||
62 | * |
||
63 | * So what is passed to drm_fb_helper_fill_var() should be fb_width/fb_height, |
||
64 | * rather than the surface size. |
||
65 | */ |
||
1964 | serge | 66 | struct drm_fb_helper_surface_size { |
67 | u32 fb_width; |
||
68 | u32 fb_height; |
||
69 | u32 surface_width; |
||
70 | u32 surface_height; |
||
71 | u32 surface_bpp; |
||
72 | u32 surface_depth; |
||
73 | }; |
||
1408 | serge | 74 | |
3391 | Serge | 75 | /** |
76 | * struct drm_fb_helper_funcs - driver callbacks for the fbdev emulation library |
||
3747 | Serge | 77 | * @gamma_set: Set the given gamma lut register on the given crtc. |
78 | * @gamma_get: Read the given gamma lut register on the given crtc, used to |
||
6082 | serge | 79 | * save the current lut when force-restoring the fbdev for e.g. |
80 | * kdbg. |
||
3747 | Serge | 81 | * @fb_probe: Driver callback to allocate and initialize the fbdev info |
5056 | serge | 82 | * structure. Furthermore it also needs to allocate the drm |
6082 | serge | 83 | * framebuffer used to back the fbdev. |
3747 | Serge | 84 | * @initial_config: Setup an initial fbdev display configuration |
3391 | Serge | 85 | * |
86 | * Driver callbacks used by the fbdev emulation helper library. |
||
87 | */ |
||
1408 | serge | 88 | struct drm_fb_helper_funcs { |
89 | void (*gamma_set)(struct drm_crtc *crtc, u16 red, u16 green, |
||
90 | u16 blue, int regno); |
||
91 | void (*gamma_get)(struct drm_crtc *crtc, u16 *red, u16 *green, |
||
92 | u16 *blue, int regno); |
||
93 | |||
1964 | serge | 94 | int (*fb_probe)(struct drm_fb_helper *helper, |
95 | struct drm_fb_helper_surface_size *sizes); |
||
3747 | Serge | 96 | bool (*initial_config)(struct drm_fb_helper *fb_helper, |
97 | struct drm_fb_helper_crtc **crtcs, |
||
98 | struct drm_display_mode **modes, |
||
5270 | serge | 99 | struct drm_fb_offset *offsets, |
3747 | Serge | 100 | bool *enabled, int width, int height); |
1408 | serge | 101 | }; |
102 | |||
103 | struct drm_fb_helper_connector { |
||
1964 | serge | 104 | struct drm_connector *connector; |
1408 | serge | 105 | }; |
106 | |||
6082 | serge | 107 | /** |
108 | * struct drm_fb_helper - helper to emulate fbdev on top of kms |
||
109 | * @fb: Scanout framebuffer object |
||
110 | * @dev: DRM device |
||
111 | * @crtc_count: number of possible CRTCs |
||
112 | * @crtc_info: per-CRTC helper state (mode, x/y offset, etc) |
||
113 | * @connector_count: number of connected connectors |
||
114 | * @connector_info_alloc_count: size of connector_info |
||
115 | * @funcs: driver callbacks for fb helper |
||
116 | * @fbdev: emulated fbdev device info struct |
||
117 | * @pseudo_palette: fake palette of 16 colors |
||
118 | * @kernel_fb_list: list_head in kernel_fb_helper_list |
||
119 | * @delayed_hotplug: was there a hotplug while kms master active? |
||
120 | */ |
||
1408 | serge | 121 | struct drm_fb_helper { |
122 | struct drm_framebuffer *fb; |
||
123 | struct drm_device *dev; |
||
124 | int crtc_count; |
||
125 | struct drm_fb_helper_crtc *crtc_info; |
||
1964 | serge | 126 | int connector_count; |
5056 | serge | 127 | int connector_info_alloc_count; |
1964 | serge | 128 | struct drm_fb_helper_connector **connector_info; |
5056 | serge | 129 | const struct drm_fb_helper_funcs *funcs; |
1964 | serge | 130 | struct fb_info *fbdev; |
131 | u32 pseudo_palette[17]; |
||
1408 | serge | 132 | struct list_head kernel_fb_list; |
1964 | serge | 133 | |
134 | /* we got a hotplug but fbdev wasn't running the console |
||
135 | delay until next set_par */ |
||
136 | bool delayed_hotplug; |
||
6082 | serge | 137 | |
138 | /** |
||
139 | * @atomic: |
||
140 | * |
||
141 | * Use atomic updates for restore_fbdev_mode(), etc. This defaults to |
||
142 | * true if driver has DRIVER_ATOMIC feature flag, but drivers can |
||
143 | * override it to true after drm_fb_helper_init() if they support atomic |
||
144 | * modeset but do not yet advertise DRIVER_ATOMIC (note that fb-helper |
||
145 | * does not require ASYNC commits). |
||
146 | */ |
||
147 | bool atomic; |
||
1408 | serge | 148 | }; |
149 | |||
6082 | serge | 150 | #ifdef CONFIG_DRM_FBDEV_EMULATION |
5056 | serge | 151 | void drm_fb_helper_prepare(struct drm_device *dev, struct drm_fb_helper *helper, |
152 | const struct drm_fb_helper_funcs *funcs); |
||
1964 | serge | 153 | int drm_fb_helper_init(struct drm_device *dev, |
154 | struct drm_fb_helper *helper, int crtc_count, |
||
6082 | serge | 155 | int max_conn); |
1964 | serge | 156 | void drm_fb_helper_fini(struct drm_fb_helper *helper); |
1408 | serge | 157 | int drm_fb_helper_blank(int blank, struct fb_info *info); |
158 | int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, |
||
159 | struct fb_info *info); |
||
160 | int drm_fb_helper_set_par(struct fb_info *info); |
||
161 | int drm_fb_helper_check_var(struct fb_var_screeninfo *var, |
||
162 | struct fb_info *info); |
||
163 | |||
6082 | serge | 164 | int drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper); |
165 | |||
166 | struct fb_info *drm_fb_helper_alloc_fbi(struct drm_fb_helper *fb_helper); |
||
167 | void drm_fb_helper_unregister_fbi(struct drm_fb_helper *fb_helper); |
||
168 | void drm_fb_helper_release_fbi(struct drm_fb_helper *fb_helper); |
||
1964 | serge | 169 | void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, |
1408 | serge | 170 | uint32_t fb_width, uint32_t fb_height); |
171 | void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, |
||
172 | uint32_t depth); |
||
173 | |||
6082 | serge | 174 | void drm_fb_helper_unlink_fbi(struct drm_fb_helper *fb_helper); |
175 | |||
176 | ssize_t drm_fb_helper_sys_read(struct fb_info *info, char __user *buf, |
||
177 | size_t count, loff_t *ppos); |
||
178 | ssize_t drm_fb_helper_sys_write(struct fb_info *info, const char __user *buf, |
||
179 | size_t count, loff_t *ppos); |
||
180 | |||
181 | void drm_fb_helper_sys_fillrect(struct fb_info *info, |
||
182 | const struct fb_fillrect *rect); |
||
183 | void drm_fb_helper_sys_copyarea(struct fb_info *info, |
||
184 | const struct fb_copyarea *area); |
||
185 | void drm_fb_helper_sys_imageblit(struct fb_info *info, |
||
186 | const struct fb_image *image); |
||
187 | |||
188 | void drm_fb_helper_cfb_fillrect(struct fb_info *info, |
||
189 | const struct fb_fillrect *rect); |
||
190 | void drm_fb_helper_cfb_copyarea(struct fb_info *info, |
||
191 | const struct fb_copyarea *area); |
||
192 | void drm_fb_helper_cfb_imageblit(struct fb_info *info, |
||
193 | const struct fb_image *image); |
||
194 | |||
195 | void drm_fb_helper_set_suspend(struct drm_fb_helper *fb_helper, int state); |
||
196 | |||
1408 | serge | 197 | int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info); |
198 | |||
1964 | serge | 199 | int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper); |
6082 | serge | 200 | int drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel); |
1964 | serge | 201 | int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper); |
202 | int drm_fb_helper_debug_enter(struct fb_info *info); |
||
203 | int drm_fb_helper_debug_leave(struct fb_info *info); |
||
5056 | serge | 204 | struct drm_display_mode * |
205 | drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, |
||
206 | int width, int height); |
||
207 | struct drm_display_mode * |
||
208 | drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn, |
||
209 | int width, int height); |
||
1964 | serge | 210 | |
5056 | serge | 211 | int drm_fb_helper_add_one_connector(struct drm_fb_helper *fb_helper, struct drm_connector *connector); |
212 | int drm_fb_helper_remove_one_connector(struct drm_fb_helper *fb_helper, |
||
213 | struct drm_connector *connector); |
||
6082 | serge | 214 | #else |
215 | static inline void drm_fb_helper_prepare(struct drm_device *dev, |
||
216 | struct drm_fb_helper *helper, |
||
217 | const struct drm_fb_helper_funcs *funcs) |
||
218 | { |
||
219 | } |
||
220 | |||
221 | static inline int drm_fb_helper_init(struct drm_device *dev, |
||
222 | struct drm_fb_helper *helper, int crtc_count, |
||
223 | int max_conn) |
||
224 | { |
||
225 | return 0; |
||
226 | } |
||
227 | |||
228 | static inline void drm_fb_helper_fini(struct drm_fb_helper *helper) |
||
229 | { |
||
230 | } |
||
231 | |||
232 | static inline int drm_fb_helper_blank(int blank, struct fb_info *info) |
||
233 | { |
||
234 | return 0; |
||
235 | } |
||
236 | |||
237 | static inline int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, |
||
238 | struct fb_info *info) |
||
239 | { |
||
240 | return 0; |
||
241 | } |
||
242 | |||
243 | static inline int drm_fb_helper_set_par(struct fb_info *info) |
||
244 | { |
||
245 | return 0; |
||
246 | } |
||
247 | |||
248 | static inline int drm_fb_helper_check_var(struct fb_var_screeninfo *var, |
||
249 | struct fb_info *info) |
||
250 | { |
||
251 | return 0; |
||
252 | } |
||
253 | |||
254 | static inline int |
||
255 | drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper) |
||
256 | { |
||
257 | return 0; |
||
258 | } |
||
259 | |||
260 | static inline struct fb_info * |
||
261 | drm_fb_helper_alloc_fbi(struct drm_fb_helper *fb_helper) |
||
262 | { |
||
263 | return NULL; |
||
264 | } |
||
265 | |||
266 | static inline void drm_fb_helper_unregister_fbi(struct drm_fb_helper *fb_helper) |
||
267 | { |
||
268 | } |
||
269 | static inline void drm_fb_helper_release_fbi(struct drm_fb_helper *fb_helper) |
||
270 | { |
||
271 | } |
||
272 | |||
273 | static inline void drm_fb_helper_fill_var(struct fb_info *info, |
||
274 | struct drm_fb_helper *fb_helper, |
||
275 | uint32_t fb_width, uint32_t fb_height) |
||
276 | { |
||
277 | } |
||
278 | |||
279 | static inline void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, |
||
280 | uint32_t depth) |
||
281 | { |
||
282 | } |
||
283 | |||
284 | static inline int drm_fb_helper_setcmap(struct fb_cmap *cmap, |
||
285 | struct fb_info *info) |
||
286 | { |
||
287 | return 0; |
||
288 | } |
||
289 | |||
290 | static inline void drm_fb_helper_unlink_fbi(struct drm_fb_helper *fb_helper) |
||
291 | { |
||
292 | } |
||
293 | |||
294 | static inline ssize_t drm_fb_helper_sys_read(struct fb_info *info, |
||
295 | char __user *buf, size_t count, |
||
296 | loff_t *ppos) |
||
297 | { |
||
298 | return -ENODEV; |
||
299 | } |
||
300 | |||
301 | static inline ssize_t drm_fb_helper_sys_write(struct fb_info *info, |
||
302 | const char __user *buf, |
||
303 | size_t count, loff_t *ppos) |
||
304 | { |
||
305 | return -ENODEV; |
||
306 | } |
||
307 | |||
308 | static inline void drm_fb_helper_sys_fillrect(struct fb_info *info, |
||
309 | const struct fb_fillrect *rect) |
||
310 | { |
||
311 | } |
||
312 | |||
313 | static inline void drm_fb_helper_sys_copyarea(struct fb_info *info, |
||
314 | const struct fb_copyarea *area) |
||
315 | { |
||
316 | } |
||
317 | |||
318 | static inline void drm_fb_helper_sys_imageblit(struct fb_info *info, |
||
319 | const struct fb_image *image) |
||
320 | { |
||
321 | } |
||
322 | |||
323 | static inline void drm_fb_helper_cfb_fillrect(struct fb_info *info, |
||
324 | const struct fb_fillrect *rect) |
||
325 | { |
||
326 | } |
||
327 | |||
328 | static inline void drm_fb_helper_cfb_copyarea(struct fb_info *info, |
||
329 | const struct fb_copyarea *area) |
||
330 | { |
||
331 | } |
||
332 | |||
333 | static inline void drm_fb_helper_cfb_imageblit(struct fb_info *info, |
||
334 | const struct fb_image *image) |
||
335 | { |
||
336 | } |
||
337 | |||
338 | static inline void drm_fb_helper_set_suspend(struct drm_fb_helper *fb_helper, |
||
339 | int state) |
||
340 | { |
||
341 | } |
||
342 | |||
343 | static inline int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper) |
||
344 | { |
||
345 | return 0; |
||
346 | } |
||
347 | |||
348 | static inline int drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, |
||
349 | int bpp_sel) |
||
350 | { |
||
351 | return 0; |
||
352 | } |
||
353 | |||
354 | static inline int |
||
355 | drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper) |
||
356 | { |
||
357 | return 0; |
||
358 | } |
||
359 | |||
360 | static inline int drm_fb_helper_debug_enter(struct fb_info *info) |
||
361 | { |
||
362 | return 0; |
||
363 | } |
||
364 | |||
365 | static inline int drm_fb_helper_debug_leave(struct fb_info *info) |
||
366 | { |
||
367 | return 0; |
||
368 | } |
||
369 | |||
370 | static inline struct drm_display_mode * |
||
371 | drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, |
||
372 | int width, int height) |
||
373 | { |
||
374 | return NULL; |
||
375 | } |
||
376 | |||
377 | static inline struct drm_display_mode * |
||
378 | drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn, |
||
379 | int width, int height) |
||
380 | { |
||
381 | return NULL; |
||
382 | } |
||
383 | |||
384 | static inline int |
||
385 | drm_fb_helper_add_one_connector(struct drm_fb_helper *fb_helper, |
||
386 | struct drm_connector *connector) |
||
387 | { |
||
388 | return 0; |
||
389 | } |
||
390 | |||
391 | static inline int |
||
392 | drm_fb_helper_remove_one_connector(struct drm_fb_helper *fb_helper, |
||
393 | struct drm_connector *connector) |
||
394 | { |
||
395 | return 0; |
||
396 | } |
||
1408 | serge | 397 | #endif |
6082 | serge | 398 | #endif |