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30#ifndef DRM_FB_HELPER_H
31#define DRM_FB_HELPER_H
32
33struct drm_fb_helper;
34
35#include <drm/drm_client.h>
36#include <drm/drm_crtc.h>
37#include <drm/drm_device.h>
38#include <linux/kgdb.h>
39
40enum mode_set_atomic {
41 LEAVE_ATOMIC_MODE_SET,
42 ENTER_ATOMIC_MODE_SET,
43};
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62struct drm_fb_helper_surface_size {
63 u32 fb_width;
64 u32 fb_height;
65 u32 surface_width;
66 u32 surface_height;
67 u32 surface_bpp;
68 u32 surface_depth;
69};
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75
76struct drm_fb_helper_funcs {
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91 int (*fb_probe)(struct drm_fb_helper *helper,
92 struct drm_fb_helper_surface_size *sizes);
93};
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113struct drm_fb_helper {
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119 struct drm_client_dev client;
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125
126 struct drm_client_buffer *buffer;
127
128 struct drm_framebuffer *fb;
129 struct drm_device *dev;
130 const struct drm_fb_helper_funcs *funcs;
131 struct fb_info *fbdev;
132 u32 pseudo_palette[17];
133 struct drm_clip_rect damage_clip;
134 spinlock_t damage_lock;
135 struct work_struct damage_work;
136 struct work_struct resume_work;
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148 struct mutex lock;
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155 struct list_head kernel_fb_list;
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164 bool delayed_hotplug;
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176 bool deferred_setup;
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186
187 int preferred_bpp;
188};
189
190static inline struct drm_fb_helper *
191drm_fb_helper_from_client(struct drm_client_dev *client)
192{
193 return container_of(client, struct drm_fb_helper, client);
194}
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201
202#define DRM_FB_HELPER_DEFAULT_OPS \
203 .fb_check_var = drm_fb_helper_check_var, \
204 .fb_set_par = drm_fb_helper_set_par, \
205 .fb_setcmap = drm_fb_helper_setcmap, \
206 .fb_blank = drm_fb_helper_blank, \
207 .fb_pan_display = drm_fb_helper_pan_display, \
208 .fb_debug_enter = drm_fb_helper_debug_enter, \
209 .fb_debug_leave = drm_fb_helper_debug_leave, \
210 .fb_ioctl = drm_fb_helper_ioctl
211
212#ifdef CONFIG_DRM_FBDEV_EMULATION
213void drm_fb_helper_prepare(struct drm_device *dev, struct drm_fb_helper *helper,
214 const struct drm_fb_helper_funcs *funcs);
215int drm_fb_helper_init(struct drm_device *dev, struct drm_fb_helper *helper);
216void drm_fb_helper_fini(struct drm_fb_helper *helper);
217int drm_fb_helper_blank(int blank, struct fb_info *info);
218int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
219 struct fb_info *info);
220int drm_fb_helper_set_par(struct fb_info *info);
221int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
222 struct fb_info *info);
223
224int drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper);
225
226struct fb_info *drm_fb_helper_alloc_fbi(struct drm_fb_helper *fb_helper);
227void drm_fb_helper_unregister_fbi(struct drm_fb_helper *fb_helper);
228void drm_fb_helper_fill_info(struct fb_info *info,
229 struct drm_fb_helper *fb_helper,
230 struct drm_fb_helper_surface_size *sizes);
231
232void drm_fb_helper_deferred_io(struct fb_info *info,
233 struct list_head *pagelist);
234
235ssize_t drm_fb_helper_sys_read(struct fb_info *info, char __user *buf,
236 size_t count, loff_t *ppos);
237ssize_t drm_fb_helper_sys_write(struct fb_info *info, const char __user *buf,
238 size_t count, loff_t *ppos);
239
240void drm_fb_helper_sys_fillrect(struct fb_info *info,
241 const struct fb_fillrect *rect);
242void drm_fb_helper_sys_copyarea(struct fb_info *info,
243 const struct fb_copyarea *area);
244void drm_fb_helper_sys_imageblit(struct fb_info *info,
245 const struct fb_image *image);
246
247void drm_fb_helper_cfb_fillrect(struct fb_info *info,
248 const struct fb_fillrect *rect);
249void drm_fb_helper_cfb_copyarea(struct fb_info *info,
250 const struct fb_copyarea *area);
251void drm_fb_helper_cfb_imageblit(struct fb_info *info,
252 const struct fb_image *image);
253
254void drm_fb_helper_set_suspend(struct drm_fb_helper *fb_helper, bool suspend);
255void drm_fb_helper_set_suspend_unlocked(struct drm_fb_helper *fb_helper,
256 bool suspend);
257
258int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info);
259
260int drm_fb_helper_ioctl(struct fb_info *info, unsigned int cmd,
261 unsigned long arg);
262
263int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper);
264int drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel);
265int drm_fb_helper_debug_enter(struct fb_info *info);
266int drm_fb_helper_debug_leave(struct fb_info *info);
267
268void drm_fb_helper_lastclose(struct drm_device *dev);
269void drm_fb_helper_output_poll_changed(struct drm_device *dev);
270
271void drm_fbdev_generic_setup(struct drm_device *dev,
272 unsigned int preferred_bpp);
273#else
274static inline void drm_fb_helper_prepare(struct drm_device *dev,
275 struct drm_fb_helper *helper,
276 const struct drm_fb_helper_funcs *funcs)
277{
278}
279
280static inline int drm_fb_helper_init(struct drm_device *dev,
281 struct drm_fb_helper *helper)
282{
283
284 helper->dev = dev;
285 dev->fb_helper = helper;
286
287 return 0;
288}
289
290static inline void drm_fb_helper_fini(struct drm_fb_helper *helper)
291{
292 if (helper && helper->dev)
293 helper->dev->fb_helper = NULL;
294}
295
296static inline int drm_fb_helper_blank(int blank, struct fb_info *info)
297{
298 return 0;
299}
300
301static inline int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
302 struct fb_info *info)
303{
304 return 0;
305}
306
307static inline int drm_fb_helper_set_par(struct fb_info *info)
308{
309 return 0;
310}
311
312static inline int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
313 struct fb_info *info)
314{
315 return 0;
316}
317
318static inline int
319drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper)
320{
321 return 0;
322}
323
324static inline struct fb_info *
325drm_fb_helper_alloc_fbi(struct drm_fb_helper *fb_helper)
326{
327 return NULL;
328}
329
330static inline void drm_fb_helper_unregister_fbi(struct drm_fb_helper *fb_helper)
331{
332}
333
334static inline void
335drm_fb_helper_fill_info(struct fb_info *info,
336 struct drm_fb_helper *fb_helper,
337 struct drm_fb_helper_surface_size *sizes)
338{
339}
340
341static inline int drm_fb_helper_setcmap(struct fb_cmap *cmap,
342 struct fb_info *info)
343{
344 return 0;
345}
346
347static inline int drm_fb_helper_ioctl(struct fb_info *info, unsigned int cmd,
348 unsigned long arg)
349{
350 return 0;
351}
352
353static inline void drm_fb_helper_deferred_io(struct fb_info *info,
354 struct list_head *pagelist)
355{
356}
357
358static inline int drm_fb_helper_defio_init(struct drm_fb_helper *fb_helper)
359{
360 return -ENODEV;
361}
362
363static inline ssize_t drm_fb_helper_sys_read(struct fb_info *info,
364 char __user *buf, size_t count,
365 loff_t *ppos)
366{
367 return -ENODEV;
368}
369
370static inline ssize_t drm_fb_helper_sys_write(struct fb_info *info,
371 const char __user *buf,
372 size_t count, loff_t *ppos)
373{
374 return -ENODEV;
375}
376
377static inline void drm_fb_helper_sys_fillrect(struct fb_info *info,
378 const struct fb_fillrect *rect)
379{
380}
381
382static inline void drm_fb_helper_sys_copyarea(struct fb_info *info,
383 const struct fb_copyarea *area)
384{
385}
386
387static inline void drm_fb_helper_sys_imageblit(struct fb_info *info,
388 const struct fb_image *image)
389{
390}
391
392static inline void drm_fb_helper_cfb_fillrect(struct fb_info *info,
393 const struct fb_fillrect *rect)
394{
395}
396
397static inline void drm_fb_helper_cfb_copyarea(struct fb_info *info,
398 const struct fb_copyarea *area)
399{
400}
401
402static inline void drm_fb_helper_cfb_imageblit(struct fb_info *info,
403 const struct fb_image *image)
404{
405}
406
407static inline void drm_fb_helper_set_suspend(struct drm_fb_helper *fb_helper,
408 bool suspend)
409{
410}
411
412static inline void
413drm_fb_helper_set_suspend_unlocked(struct drm_fb_helper *fb_helper, bool suspend)
414{
415}
416
417static inline int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper)
418{
419 return 0;
420}
421
422static inline int drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper,
423 int bpp_sel)
424{
425 return 0;
426}
427
428static inline int drm_fb_helper_debug_enter(struct fb_info *info)
429{
430 return 0;
431}
432
433static inline int drm_fb_helper_debug_leave(struct fb_info *info)
434{
435 return 0;
436}
437
438static inline void drm_fb_helper_lastclose(struct drm_device *dev)
439{
440}
441
442static inline void drm_fb_helper_output_poll_changed(struct drm_device *dev)
443{
444}
445
446static inline void
447drm_fbdev_generic_setup(struct drm_device *dev, unsigned int preferred_bpp)
448{
449}
450
451#endif
452
453#endif
454