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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#include <linux/vgaarb.h>
40
41enum mode_set_atomic {
42 LEAVE_ATOMIC_MODE_SET,
43 ENTER_ATOMIC_MODE_SET,
44};
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63struct drm_fb_helper_surface_size {
64 u32 fb_width;
65 u32 fb_height;
66 u32 surface_width;
67 u32 surface_height;
68 u32 surface_bpp;
69 u32 surface_depth;
70};
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76
77struct drm_fb_helper_funcs {
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91
92 int (*fb_probe)(struct drm_fb_helper *helper,
93 struct drm_fb_helper_surface_size *sizes);
94};
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114struct drm_fb_helper {
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119
120 struct drm_client_dev client;
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126
127 struct drm_client_buffer *buffer;
128
129 struct drm_framebuffer *fb;
130 struct drm_device *dev;
131 const struct drm_fb_helper_funcs *funcs;
132 struct fb_info *fbdev;
133 u32 pseudo_palette[17];
134 struct drm_clip_rect dirty_clip;
135 spinlock_t dirty_lock;
136 struct work_struct dirty_work;
137 struct work_struct resume_work;
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149 struct mutex lock;
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156 struct list_head kernel_fb_list;
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165 bool delayed_hotplug;
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177 bool deferred_setup;
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188 int preferred_bpp;
189};
190
191static inline struct drm_fb_helper *
192drm_fb_helper_from_client(struct drm_client_dev *client)
193{
194 return container_of(client, struct drm_fb_helper, client);
195}
196
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202
203#define DRM_FB_HELPER_DEFAULT_OPS \
204 .fb_check_var = drm_fb_helper_check_var, \
205 .fb_set_par = drm_fb_helper_set_par, \
206 .fb_setcmap = drm_fb_helper_setcmap, \
207 .fb_blank = drm_fb_helper_blank, \
208 .fb_pan_display = drm_fb_helper_pan_display, \
209 .fb_debug_enter = drm_fb_helper_debug_enter, \
210 .fb_debug_leave = drm_fb_helper_debug_leave, \
211 .fb_ioctl = drm_fb_helper_ioctl
212
213#ifdef CONFIG_DRM_FBDEV_EMULATION
214void drm_fb_helper_prepare(struct drm_device *dev, struct drm_fb_helper *helper,
215 const struct drm_fb_helper_funcs *funcs);
216int drm_fb_helper_init(struct drm_device *dev,
217 struct drm_fb_helper *helper, int max_conn);
218void drm_fb_helper_fini(struct drm_fb_helper *helper);
219int drm_fb_helper_blank(int blank, struct fb_info *info);
220int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
221 struct fb_info *info);
222int drm_fb_helper_set_par(struct fb_info *info);
223int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
224 struct fb_info *info);
225
226int drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper);
227
228struct fb_info *drm_fb_helper_alloc_fbi(struct drm_fb_helper *fb_helper);
229void drm_fb_helper_unregister_fbi(struct drm_fb_helper *fb_helper);
230void drm_fb_helper_fill_info(struct fb_info *info,
231 struct drm_fb_helper *fb_helper,
232 struct drm_fb_helper_surface_size *sizes);
233
234void drm_fb_helper_unlink_fbi(struct drm_fb_helper *fb_helper);
235
236void drm_fb_helper_deferred_io(struct fb_info *info,
237 struct list_head *pagelist);
238int drm_fb_helper_defio_init(struct drm_fb_helper *fb_helper);
239
240ssize_t drm_fb_helper_sys_read(struct fb_info *info, char __user *buf,
241 size_t count, loff_t *ppos);
242ssize_t drm_fb_helper_sys_write(struct fb_info *info, const char __user *buf,
243 size_t count, loff_t *ppos);
244
245void drm_fb_helper_sys_fillrect(struct fb_info *info,
246 const struct fb_fillrect *rect);
247void drm_fb_helper_sys_copyarea(struct fb_info *info,
248 const struct fb_copyarea *area);
249void drm_fb_helper_sys_imageblit(struct fb_info *info,
250 const struct fb_image *image);
251
252void drm_fb_helper_cfb_fillrect(struct fb_info *info,
253 const struct fb_fillrect *rect);
254void drm_fb_helper_cfb_copyarea(struct fb_info *info,
255 const struct fb_copyarea *area);
256void drm_fb_helper_cfb_imageblit(struct fb_info *info,
257 const struct fb_image *image);
258
259void drm_fb_helper_set_suspend(struct drm_fb_helper *fb_helper, bool suspend);
260void drm_fb_helper_set_suspend_unlocked(struct drm_fb_helper *fb_helper,
261 bool suspend);
262
263int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info);
264
265int drm_fb_helper_ioctl(struct fb_info *info, unsigned int cmd,
266 unsigned long arg);
267
268int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper);
269int drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel);
270int drm_fb_helper_debug_enter(struct fb_info *info);
271int drm_fb_helper_debug_leave(struct fb_info *info);
272
273int drm_fb_helper_fbdev_setup(struct drm_device *dev,
274 struct drm_fb_helper *fb_helper,
275 const struct drm_fb_helper_funcs *funcs,
276 unsigned int preferred_bpp,
277 unsigned int max_conn_count);
278void drm_fb_helper_fbdev_teardown(struct drm_device *dev);
279
280void drm_fb_helper_lastclose(struct drm_device *dev);
281void drm_fb_helper_output_poll_changed(struct drm_device *dev);
282
283int drm_fb_helper_generic_probe(struct drm_fb_helper *fb_helper,
284 struct drm_fb_helper_surface_size *sizes);
285int drm_fbdev_generic_setup(struct drm_device *dev, unsigned int preferred_bpp);
286#else
287static inline void drm_fb_helper_prepare(struct drm_device *dev,
288 struct drm_fb_helper *helper,
289 const struct drm_fb_helper_funcs *funcs)
290{
291}
292
293static inline int drm_fb_helper_init(struct drm_device *dev,
294 struct drm_fb_helper *helper,
295 int max_conn)
296{
297
298 helper->dev = dev;
299 dev->fb_helper = helper;
300
301 return 0;
302}
303
304static inline void drm_fb_helper_fini(struct drm_fb_helper *helper)
305{
306 if (helper && helper->dev)
307 helper->dev->fb_helper = NULL;
308}
309
310static inline int drm_fb_helper_blank(int blank, struct fb_info *info)
311{
312 return 0;
313}
314
315static inline int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
316 struct fb_info *info)
317{
318 return 0;
319}
320
321static inline int drm_fb_helper_set_par(struct fb_info *info)
322{
323 return 0;
324}
325
326static inline int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
327 struct fb_info *info)
328{
329 return 0;
330}
331
332static inline int
333drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper)
334{
335 return 0;
336}
337
338static inline struct fb_info *
339drm_fb_helper_alloc_fbi(struct drm_fb_helper *fb_helper)
340{
341 return NULL;
342}
343
344static inline void drm_fb_helper_unregister_fbi(struct drm_fb_helper *fb_helper)
345{
346}
347
348static inline void
349drm_fb_helper_fill_info(struct fb_info *info,
350 struct drm_fb_helper *fb_helper,
351 struct drm_fb_helper_surface_size *sizes)
352{
353}
354
355static inline int drm_fb_helper_setcmap(struct fb_cmap *cmap,
356 struct fb_info *info)
357{
358 return 0;
359}
360
361static inline int drm_fb_helper_ioctl(struct fb_info *info, unsigned int cmd,
362 unsigned long arg)
363{
364 return 0;
365}
366
367static inline void drm_fb_helper_unlink_fbi(struct drm_fb_helper *fb_helper)
368{
369}
370
371static inline void drm_fb_helper_deferred_io(struct fb_info *info,
372 struct list_head *pagelist)
373{
374}
375
376static inline int drm_fb_helper_defio_init(struct drm_fb_helper *fb_helper)
377{
378 return -ENODEV;
379}
380
381static inline ssize_t drm_fb_helper_sys_read(struct fb_info *info,
382 char __user *buf, size_t count,
383 loff_t *ppos)
384{
385 return -ENODEV;
386}
387
388static inline ssize_t drm_fb_helper_sys_write(struct fb_info *info,
389 const char __user *buf,
390 size_t count, loff_t *ppos)
391{
392 return -ENODEV;
393}
394
395static inline void drm_fb_helper_sys_fillrect(struct fb_info *info,
396 const struct fb_fillrect *rect)
397{
398}
399
400static inline void drm_fb_helper_sys_copyarea(struct fb_info *info,
401 const struct fb_copyarea *area)
402{
403}
404
405static inline void drm_fb_helper_sys_imageblit(struct fb_info *info,
406 const struct fb_image *image)
407{
408}
409
410static inline void drm_fb_helper_cfb_fillrect(struct fb_info *info,
411 const struct fb_fillrect *rect)
412{
413}
414
415static inline void drm_fb_helper_cfb_copyarea(struct fb_info *info,
416 const struct fb_copyarea *area)
417{
418}
419
420static inline void drm_fb_helper_cfb_imageblit(struct fb_info *info,
421 const struct fb_image *image)
422{
423}
424
425static inline void drm_fb_helper_set_suspend(struct drm_fb_helper *fb_helper,
426 bool suspend)
427{
428}
429
430static inline void
431drm_fb_helper_set_suspend_unlocked(struct drm_fb_helper *fb_helper, bool suspend)
432{
433}
434
435static inline int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper)
436{
437 return 0;
438}
439
440static inline int drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper,
441 int bpp_sel)
442{
443 return 0;
444}
445
446static inline int drm_fb_helper_debug_enter(struct fb_info *info)
447{
448 return 0;
449}
450
451static inline int drm_fb_helper_debug_leave(struct fb_info *info)
452{
453 return 0;
454}
455
456static inline int
457drm_fb_helper_fbdev_setup(struct drm_device *dev,
458 struct drm_fb_helper *fb_helper,
459 const struct drm_fb_helper_funcs *funcs,
460 unsigned int preferred_bpp,
461 unsigned int max_conn_count)
462{
463
464 dev->fb_helper = fb_helper;
465
466 return 0;
467}
468
469static inline void drm_fb_helper_fbdev_teardown(struct drm_device *dev)
470{
471 dev->fb_helper = NULL;
472}
473
474static inline void drm_fb_helper_lastclose(struct drm_device *dev)
475{
476}
477
478static inline void drm_fb_helper_output_poll_changed(struct drm_device *dev)
479{
480}
481
482static inline int
483drm_fb_helper_generic_probe(struct drm_fb_helper *fb_helper,
484 struct drm_fb_helper_surface_size *sizes)
485{
486 return 0;
487}
488
489static inline int
490drm_fbdev_generic_setup(struct drm_device *dev, unsigned int preferred_bpp)
491{
492 return 0;
493}
494
495#endif
496
497
498static inline int
499drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper)
500{
501 return 0;
502}
503
504static inline int
505drm_fb_helper_add_one_connector(struct drm_fb_helper *fb_helper,
506 struct drm_connector *connector)
507{
508 return 0;
509}
510
511static inline int
512drm_fb_helper_remove_one_connector(struct drm_fb_helper *fb_helper,
513 struct drm_connector *connector)
514{
515 return 0;
516}
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528static inline int
529drm_fb_helper_remove_conflicting_framebuffers(struct apertures_struct *a,
530 const char *name, bool primary)
531{
532#if IS_REACHABLE(CONFIG_FB)
533 return remove_conflicting_framebuffers(a, name, primary);
534#else
535 return 0;
536#endif
537}
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550
551static inline int
552drm_fb_helper_remove_conflicting_pci_framebuffers(struct pci_dev *pdev,
553 int resource_id,
554 const char *name)
555{
556 int ret = 0;
557
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561
562#if IS_REACHABLE(CONFIG_FB)
563 ret = remove_conflicting_pci_framebuffers(pdev, resource_id, name);
564#endif
565 if (ret == 0)
566 ret = vga_remove_vgacon(pdev);
567 return ret;
568}
569
570#endif
571