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5320918b DA |
1 | /* |
2 | * Copyright (C) 2012 Red Hat | |
3 | * | |
4 | * based in parts on udlfb.c: | |
5 | * Copyright (C) 2009 Roberto De Ioris <roberto@unbit.it> | |
6 | * Copyright (C) 2009 Jaya Kumar <jayakumar.lkml@gmail.com> | |
7 | * Copyright (C) 2009 Bernie Thompson <bernie@plugable.com> | |
8 | * | |
9 | * This file is subject to the terms and conditions of the GNU General Public | |
10 | * License v2. See the file COPYING in the main directory of this archive for | |
11 | * more details. | |
12 | */ | |
13 | #include <linux/module.h> | |
14 | #include <linux/slab.h> | |
15 | #include <linux/fb.h> | |
16 | ||
17 | #include "drmP.h" | |
18 | #include "drm.h" | |
19 | #include "drm_crtc.h" | |
20 | #include "drm_crtc_helper.h" | |
21 | #include "udl_drv.h" | |
22 | ||
23 | #include "drm_fb_helper.h" | |
24 | ||
25 | #define DL_DEFIO_WRITE_DELAY 5 /* fb_deferred_io.delay in jiffies */ | |
26 | ||
27 | static int fb_defio = 1; /* Optionally enable experimental fb_defio mmap support */ | |
28 | static int fb_bpp = 16; | |
29 | ||
30 | module_param(fb_bpp, int, S_IWUSR | S_IRUSR | S_IWGRP | S_IRGRP); | |
31 | module_param(fb_defio, int, S_IWUSR | S_IRUSR | S_IWGRP | S_IRGRP); | |
32 | ||
33 | struct udl_fbdev { | |
34 | struct drm_fb_helper helper; | |
35 | struct udl_framebuffer ufb; | |
36 | struct list_head fbdev_list; | |
37 | int fb_count; | |
38 | }; | |
39 | ||
40 | #define DL_ALIGN_UP(x, a) ALIGN(x, a) | |
41 | #define DL_ALIGN_DOWN(x, a) ALIGN(x-(a-1), a) | |
42 | ||
43 | /** Read the red component (0..255) of a 32 bpp colour. */ | |
44 | #define DLO_RGB_GETRED(col) (uint8_t)((col) & 0xFF) | |
45 | ||
46 | /** Read the green component (0..255) of a 32 bpp colour. */ | |
47 | #define DLO_RGB_GETGRN(col) (uint8_t)(((col) >> 8) & 0xFF) | |
48 | ||
49 | /** Read the blue component (0..255) of a 32 bpp colour. */ | |
50 | #define DLO_RGB_GETBLU(col) (uint8_t)(((col) >> 16) & 0xFF) | |
51 | ||
52 | /** Return red/green component of a 16 bpp colour number. */ | |
53 | #define DLO_RG16(red, grn) (uint8_t)((((red) & 0xF8) | ((grn) >> 5)) & 0xFF) | |
54 | ||
55 | /** Return green/blue component of a 16 bpp colour number. */ | |
56 | #define DLO_GB16(grn, blu) (uint8_t)(((((grn) & 0x1C) << 3) | ((blu) >> 3)) & 0xFF) | |
57 | ||
58 | /** Return 8 bpp colour number from red, green and blue components. */ | |
59 | #define DLO_RGB8(red, grn, blu) ((((red) << 5) | (((grn) & 3) << 3) | ((blu) & 7)) & 0xFF) | |
60 | ||
61 | #if 0 | |
62 | static uint8_t rgb8(uint32_t col) | |
63 | { | |
64 | uint8_t red = DLO_RGB_GETRED(col); | |
65 | uint8_t grn = DLO_RGB_GETGRN(col); | |
66 | uint8_t blu = DLO_RGB_GETBLU(col); | |
67 | ||
68 | return DLO_RGB8(red, grn, blu); | |
69 | } | |
70 | ||
71 | static uint16_t rgb16(uint32_t col) | |
72 | { | |
73 | uint8_t red = DLO_RGB_GETRED(col); | |
74 | uint8_t grn = DLO_RGB_GETGRN(col); | |
75 | uint8_t blu = DLO_RGB_GETBLU(col); | |
76 | ||
77 | return (DLO_RG16(red, grn) << 8) + DLO_GB16(grn, blu); | |
78 | } | |
79 | #endif | |
80 | ||
81 | /* | |
82 | * NOTE: fb_defio.c is holding info->fbdefio.mutex | |
83 | * Touching ANY framebuffer memory that triggers a page fault | |
84 | * in fb_defio will cause a deadlock, when it also tries to | |
85 | * grab the same mutex. | |
86 | */ | |
87 | static void udlfb_dpy_deferred_io(struct fb_info *info, | |
88 | struct list_head *pagelist) | |
89 | { | |
90 | struct page *cur; | |
91 | struct fb_deferred_io *fbdefio = info->fbdefio; | |
92 | struct udl_fbdev *ufbdev = info->par; | |
93 | struct drm_device *dev = ufbdev->ufb.base.dev; | |
94 | struct udl_device *udl = dev->dev_private; | |
95 | struct urb *urb; | |
96 | char *cmd; | |
97 | cycles_t start_cycles, end_cycles; | |
98 | int bytes_sent = 0; | |
99 | int bytes_identical = 0; | |
100 | int bytes_rendered = 0; | |
101 | ||
102 | if (!fb_defio) | |
103 | return; | |
104 | ||
105 | start_cycles = get_cycles(); | |
106 | ||
107 | urb = udl_get_urb(dev); | |
108 | if (!urb) | |
109 | return; | |
110 | ||
111 | cmd = urb->transfer_buffer; | |
112 | ||
113 | /* walk the written page list and render each to device */ | |
114 | list_for_each_entry(cur, &fbdefio->pagelist, lru) { | |
115 | ||
116 | if (udl_render_hline(dev, (ufbdev->ufb.base.bits_per_pixel / 8), | |
117 | &urb, (char *) info->fix.smem_start, | |
118 | &cmd, cur->index << PAGE_SHIFT, | |
119 | PAGE_SIZE, &bytes_identical, &bytes_sent)) | |
120 | goto error; | |
121 | bytes_rendered += PAGE_SIZE; | |
122 | } | |
123 | ||
124 | if (cmd > (char *) urb->transfer_buffer) { | |
125 | /* Send partial buffer remaining before exiting */ | |
126 | int len = cmd - (char *) urb->transfer_buffer; | |
127 | udl_submit_urb(dev, urb, len); | |
128 | bytes_sent += len; | |
129 | } else | |
130 | udl_urb_completion(urb); | |
131 | ||
132 | error: | |
133 | atomic_add(bytes_sent, &udl->bytes_sent); | |
134 | atomic_add(bytes_identical, &udl->bytes_identical); | |
135 | atomic_add(bytes_rendered, &udl->bytes_rendered); | |
136 | end_cycles = get_cycles(); | |
137 | atomic_add(((unsigned int) ((end_cycles - start_cycles) | |
138 | >> 10)), /* Kcycles */ | |
139 | &udl->cpu_kcycles_used); | |
140 | } | |
141 | ||
142 | int udl_handle_damage(struct udl_framebuffer *fb, int x, int y, | |
143 | int width, int height) | |
144 | { | |
145 | struct drm_device *dev = fb->base.dev; | |
146 | struct udl_device *udl = dev->dev_private; | |
147 | int i, ret; | |
148 | char *cmd; | |
149 | cycles_t start_cycles, end_cycles; | |
150 | int bytes_sent = 0; | |
151 | int bytes_identical = 0; | |
152 | struct urb *urb; | |
153 | int aligned_x; | |
154 | int bpp = (fb->base.bits_per_pixel / 8); | |
155 | ||
156 | if (!fb->active_16) | |
157 | return 0; | |
158 | ||
e8aa1d1e DA |
159 | if (!fb->obj->vmapping) { |
160 | ret = udl_gem_vmap(fb->obj); | |
161 | if (ret == -ENOMEM) { | |
162 | DRM_ERROR("failed to vmap fb\n"); | |
163 | return 0; | |
164 | } | |
165 | if (!fb->obj->vmapping) { | |
166 | DRM_ERROR("failed to vmapping\n"); | |
167 | return 0; | |
168 | } | |
169 | } | |
5320918b DA |
170 | |
171 | start_cycles = get_cycles(); | |
172 | ||
173 | aligned_x = DL_ALIGN_DOWN(x, sizeof(unsigned long)); | |
174 | width = DL_ALIGN_UP(width + (x-aligned_x), sizeof(unsigned long)); | |
175 | x = aligned_x; | |
176 | ||
177 | if ((width <= 0) || | |
178 | (x + width > fb->base.width) || | |
179 | (y + height > fb->base.height)) | |
180 | return -EINVAL; | |
181 | ||
182 | urb = udl_get_urb(dev); | |
183 | if (!urb) | |
184 | return 0; | |
185 | cmd = urb->transfer_buffer; | |
186 | ||
187 | for (i = y; i < y + height ; i++) { | |
188 | const int line_offset = fb->base.pitches[0] * i; | |
189 | const int byte_offset = line_offset + (x * bpp); | |
190 | ||
191 | if (udl_render_hline(dev, bpp, &urb, | |
192 | (char *) fb->obj->vmapping, | |
193 | &cmd, byte_offset, width * bpp, | |
194 | &bytes_identical, &bytes_sent)) | |
195 | goto error; | |
196 | } | |
197 | ||
198 | if (cmd > (char *) urb->transfer_buffer) { | |
199 | /* Send partial buffer remaining before exiting */ | |
200 | int len = cmd - (char *) urb->transfer_buffer; | |
201 | ret = udl_submit_urb(dev, urb, len); | |
202 | bytes_sent += len; | |
203 | } else | |
204 | udl_urb_completion(urb); | |
205 | ||
206 | error: | |
207 | atomic_add(bytes_sent, &udl->bytes_sent); | |
208 | atomic_add(bytes_identical, &udl->bytes_identical); | |
209 | atomic_add(width*height*bpp, &udl->bytes_rendered); | |
210 | end_cycles = get_cycles(); | |
211 | atomic_add(((unsigned int) ((end_cycles - start_cycles) | |
212 | >> 10)), /* Kcycles */ | |
213 | &udl->cpu_kcycles_used); | |
214 | ||
215 | return 0; | |
216 | } | |
217 | ||
218 | static int udl_fb_mmap(struct fb_info *info, struct vm_area_struct *vma) | |
219 | { | |
220 | unsigned long start = vma->vm_start; | |
221 | unsigned long size = vma->vm_end - vma->vm_start; | |
222 | unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; | |
223 | unsigned long page, pos; | |
224 | ||
225 | if (offset + size > info->fix.smem_len) | |
226 | return -EINVAL; | |
227 | ||
228 | pos = (unsigned long)info->fix.smem_start + offset; | |
229 | ||
230 | pr_notice("mmap() framebuffer addr:%lu size:%lu\n", | |
231 | pos, size); | |
232 | ||
233 | while (size > 0) { | |
234 | page = vmalloc_to_pfn((void *)pos); | |
235 | if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) | |
236 | return -EAGAIN; | |
237 | ||
238 | start += PAGE_SIZE; | |
239 | pos += PAGE_SIZE; | |
240 | if (size > PAGE_SIZE) | |
241 | size -= PAGE_SIZE; | |
242 | else | |
243 | size = 0; | |
244 | } | |
245 | ||
246 | vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */ | |
247 | return 0; | |
248 | } | |
249 | ||
250 | static void udl_fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) | |
251 | { | |
252 | struct udl_fbdev *ufbdev = info->par; | |
253 | ||
254 | sys_fillrect(info, rect); | |
255 | ||
256 | udl_handle_damage(&ufbdev->ufb, rect->dx, rect->dy, rect->width, | |
257 | rect->height); | |
258 | } | |
259 | ||
260 | static void udl_fb_copyarea(struct fb_info *info, const struct fb_copyarea *region) | |
261 | { | |
262 | struct udl_fbdev *ufbdev = info->par; | |
263 | ||
264 | sys_copyarea(info, region); | |
265 | ||
266 | udl_handle_damage(&ufbdev->ufb, region->dx, region->dy, region->width, | |
267 | region->height); | |
268 | } | |
269 | ||
270 | static void udl_fb_imageblit(struct fb_info *info, const struct fb_image *image) | |
271 | { | |
272 | struct udl_fbdev *ufbdev = info->par; | |
273 | ||
274 | sys_imageblit(info, image); | |
275 | ||
276 | udl_handle_damage(&ufbdev->ufb, image->dx, image->dy, image->width, | |
277 | image->height); | |
278 | } | |
279 | ||
280 | /* | |
281 | * It's common for several clients to have framebuffer open simultaneously. | |
282 | * e.g. both fbcon and X. Makes things interesting. | |
283 | * Assumes caller is holding info->lock (for open and release at least) | |
284 | */ | |
285 | static int udl_fb_open(struct fb_info *info, int user) | |
286 | { | |
287 | struct udl_fbdev *ufbdev = info->par; | |
288 | struct drm_device *dev = ufbdev->ufb.base.dev; | |
289 | struct udl_device *udl = dev->dev_private; | |
290 | ||
291 | /* If the USB device is gone, we don't accept new opens */ | |
292 | if (drm_device_is_unplugged(udl->ddev)) | |
293 | return -ENODEV; | |
294 | ||
295 | ufbdev->fb_count++; | |
296 | ||
297 | if (fb_defio && (info->fbdefio == NULL)) { | |
298 | /* enable defio at last moment if not disabled by client */ | |
299 | ||
300 | struct fb_deferred_io *fbdefio; | |
301 | ||
302 | fbdefio = kmalloc(sizeof(struct fb_deferred_io), GFP_KERNEL); | |
303 | ||
304 | if (fbdefio) { | |
305 | fbdefio->delay = DL_DEFIO_WRITE_DELAY; | |
306 | fbdefio->deferred_io = udlfb_dpy_deferred_io; | |
307 | } | |
308 | ||
309 | info->fbdefio = fbdefio; | |
310 | fb_deferred_io_init(info); | |
311 | } | |
312 | ||
313 | pr_notice("open /dev/fb%d user=%d fb_info=%p count=%d\n", | |
314 | info->node, user, info, ufbdev->fb_count); | |
315 | ||
316 | return 0; | |
317 | } | |
318 | ||
319 | ||
320 | /* | |
321 | * Assumes caller is holding info->lock mutex (for open and release at least) | |
322 | */ | |
323 | static int udl_fb_release(struct fb_info *info, int user) | |
324 | { | |
325 | struct udl_fbdev *ufbdev = info->par; | |
326 | ||
327 | ufbdev->fb_count--; | |
328 | ||
329 | if ((ufbdev->fb_count == 0) && (info->fbdefio)) { | |
330 | fb_deferred_io_cleanup(info); | |
331 | kfree(info->fbdefio); | |
332 | info->fbdefio = NULL; | |
333 | info->fbops->fb_mmap = udl_fb_mmap; | |
334 | } | |
335 | ||
336 | pr_warn("released /dev/fb%d user=%d count=%d\n", | |
337 | info->node, user, ufbdev->fb_count); | |
338 | ||
339 | return 0; | |
340 | } | |
341 | ||
342 | static struct fb_ops udlfb_ops = { | |
343 | .owner = THIS_MODULE, | |
344 | .fb_check_var = drm_fb_helper_check_var, | |
345 | .fb_set_par = drm_fb_helper_set_par, | |
346 | .fb_fillrect = udl_fb_fillrect, | |
347 | .fb_copyarea = udl_fb_copyarea, | |
348 | .fb_imageblit = udl_fb_imageblit, | |
349 | .fb_pan_display = drm_fb_helper_pan_display, | |
350 | .fb_blank = drm_fb_helper_blank, | |
351 | .fb_setcmap = drm_fb_helper_setcmap, | |
352 | .fb_debug_enter = drm_fb_helper_debug_enter, | |
353 | .fb_debug_leave = drm_fb_helper_debug_leave, | |
354 | .fb_mmap = udl_fb_mmap, | |
355 | .fb_open = udl_fb_open, | |
356 | .fb_release = udl_fb_release, | |
357 | }; | |
358 | ||
359 | void udl_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, | |
360 | u16 blue, int regno) | |
361 | { | |
362 | } | |
363 | ||
364 | void udl_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green, | |
365 | u16 *blue, int regno) | |
366 | { | |
367 | *red = 0; | |
368 | *green = 0; | |
369 | *blue = 0; | |
370 | } | |
371 | ||
372 | static int udl_user_framebuffer_dirty(struct drm_framebuffer *fb, | |
373 | struct drm_file *file, | |
374 | unsigned flags, unsigned color, | |
375 | struct drm_clip_rect *clips, | |
376 | unsigned num_clips) | |
377 | { | |
378 | struct udl_framebuffer *ufb = to_udl_fb(fb); | |
379 | int i; | |
380 | ||
381 | if (!ufb->active_16) | |
382 | return 0; | |
383 | ||
384 | for (i = 0; i < num_clips; i++) { | |
385 | udl_handle_damage(ufb, clips[i].x1, clips[i].y1, | |
386 | clips[i].x2 - clips[i].x1, | |
387 | clips[i].y2 - clips[i].y1); | |
388 | } | |
389 | return 0; | |
390 | } | |
391 | ||
392 | static void udl_user_framebuffer_destroy(struct drm_framebuffer *fb) | |
393 | { | |
394 | struct udl_framebuffer *ufb = to_udl_fb(fb); | |
395 | ||
396 | if (ufb->obj) | |
397 | drm_gem_object_unreference_unlocked(&ufb->obj->base); | |
398 | ||
399 | drm_framebuffer_cleanup(fb); | |
400 | kfree(ufb); | |
401 | } | |
402 | ||
403 | static const struct drm_framebuffer_funcs udlfb_funcs = { | |
404 | .destroy = udl_user_framebuffer_destroy, | |
405 | .dirty = udl_user_framebuffer_dirty, | |
406 | .create_handle = NULL, | |
407 | }; | |
408 | ||
409 | ||
410 | static int | |
411 | udl_framebuffer_init(struct drm_device *dev, | |
412 | struct udl_framebuffer *ufb, | |
413 | struct drm_mode_fb_cmd2 *mode_cmd, | |
414 | struct udl_gem_object *obj) | |
415 | { | |
416 | int ret; | |
417 | ||
418 | ufb->obj = obj; | |
419 | ret = drm_framebuffer_init(dev, &ufb->base, &udlfb_funcs); | |
420 | drm_helper_mode_fill_fb_struct(&ufb->base, mode_cmd); | |
421 | return ret; | |
422 | } | |
423 | ||
424 | ||
425 | static int udlfb_create(struct udl_fbdev *ufbdev, | |
426 | struct drm_fb_helper_surface_size *sizes) | |
427 | { | |
428 | struct drm_device *dev = ufbdev->helper.dev; | |
429 | struct fb_info *info; | |
430 | struct device *device = &dev->usbdev->dev; | |
431 | struct drm_framebuffer *fb; | |
432 | struct drm_mode_fb_cmd2 mode_cmd; | |
433 | struct udl_gem_object *obj; | |
434 | uint32_t size; | |
435 | int ret = 0; | |
436 | ||
437 | if (sizes->surface_bpp == 24) | |
438 | sizes->surface_bpp = 32; | |
439 | ||
440 | mode_cmd.width = sizes->surface_width; | |
441 | mode_cmd.height = sizes->surface_height; | |
442 | mode_cmd.pitches[0] = mode_cmd.width * ((sizes->surface_bpp + 7) / 8); | |
443 | ||
444 | mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, | |
445 | sizes->surface_depth); | |
446 | ||
447 | size = mode_cmd.pitches[0] * mode_cmd.height; | |
448 | size = ALIGN(size, PAGE_SIZE); | |
449 | ||
450 | obj = udl_gem_alloc_object(dev, size); | |
451 | if (!obj) | |
452 | goto out; | |
453 | ||
454 | ret = udl_gem_vmap(obj); | |
455 | if (ret) { | |
456 | DRM_ERROR("failed to vmap fb\n"); | |
457 | goto out_gfree; | |
458 | } | |
459 | ||
460 | info = framebuffer_alloc(0, device); | |
461 | if (!info) { | |
462 | ret = -ENOMEM; | |
463 | goto out_gfree; | |
464 | } | |
465 | info->par = ufbdev; | |
466 | ||
467 | ret = udl_framebuffer_init(dev, &ufbdev->ufb, &mode_cmd, obj); | |
468 | if (ret) | |
469 | goto out_gfree; | |
470 | ||
471 | fb = &ufbdev->ufb.base; | |
472 | ||
473 | ufbdev->helper.fb = fb; | |
474 | ufbdev->helper.fbdev = info; | |
475 | ||
476 | strcpy(info->fix.id, "udldrmfb"); | |
477 | ||
478 | info->screen_base = ufbdev->ufb.obj->vmapping; | |
479 | info->fix.smem_len = size; | |
480 | info->fix.smem_start = (unsigned long)ufbdev->ufb.obj->vmapping; | |
481 | ||
482 | info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT; | |
483 | info->fbops = &udlfb_ops; | |
484 | drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); | |
485 | drm_fb_helper_fill_var(info, &ufbdev->helper, sizes->fb_width, sizes->fb_height); | |
486 | ||
487 | ret = fb_alloc_cmap(&info->cmap, 256, 0); | |
488 | if (ret) { | |
489 | ret = -ENOMEM; | |
490 | goto out_gfree; | |
491 | } | |
492 | ||
493 | ||
494 | DRM_DEBUG_KMS("allocated %dx%d vmal %p\n", | |
495 | fb->width, fb->height, | |
496 | ufbdev->ufb.obj->vmapping); | |
497 | ||
498 | return ret; | |
499 | out_gfree: | |
500 | drm_gem_object_unreference(&ufbdev->ufb.obj->base); | |
501 | out: | |
502 | return ret; | |
503 | } | |
504 | ||
505 | static int udl_fb_find_or_create_single(struct drm_fb_helper *helper, | |
506 | struct drm_fb_helper_surface_size *sizes) | |
507 | { | |
508 | struct udl_fbdev *ufbdev = (struct udl_fbdev *)helper; | |
509 | int new_fb = 0; | |
510 | int ret; | |
511 | ||
512 | if (!helper->fb) { | |
513 | ret = udlfb_create(ufbdev, sizes); | |
514 | if (ret) | |
515 | return ret; | |
516 | ||
517 | new_fb = 1; | |
518 | } | |
519 | return new_fb; | |
520 | } | |
521 | ||
522 | static struct drm_fb_helper_funcs udl_fb_helper_funcs = { | |
523 | .gamma_set = udl_crtc_fb_gamma_set, | |
524 | .gamma_get = udl_crtc_fb_gamma_get, | |
525 | .fb_probe = udl_fb_find_or_create_single, | |
526 | }; | |
527 | ||
528 | static void udl_fbdev_destroy(struct drm_device *dev, | |
529 | struct udl_fbdev *ufbdev) | |
530 | { | |
531 | struct fb_info *info; | |
532 | if (ufbdev->helper.fbdev) { | |
533 | info = ufbdev->helper.fbdev; | |
534 | unregister_framebuffer(info); | |
535 | if (info->cmap.len) | |
536 | fb_dealloc_cmap(&info->cmap); | |
537 | framebuffer_release(info); | |
538 | } | |
539 | drm_fb_helper_fini(&ufbdev->helper); | |
540 | drm_framebuffer_cleanup(&ufbdev->ufb.base); | |
541 | drm_gem_object_unreference_unlocked(&ufbdev->ufb.obj->base); | |
542 | } | |
543 | ||
544 | int udl_fbdev_init(struct drm_device *dev) | |
545 | { | |
546 | struct udl_device *udl = dev->dev_private; | |
547 | int bpp_sel = fb_bpp; | |
548 | struct udl_fbdev *ufbdev; | |
549 | int ret; | |
550 | ||
551 | ufbdev = kzalloc(sizeof(struct udl_fbdev), GFP_KERNEL); | |
552 | if (!ufbdev) | |
553 | return -ENOMEM; | |
554 | ||
555 | udl->fbdev = ufbdev; | |
556 | ufbdev->helper.funcs = &udl_fb_helper_funcs; | |
557 | ||
558 | ret = drm_fb_helper_init(dev, &ufbdev->helper, | |
559 | 1, 1); | |
560 | if (ret) { | |
561 | kfree(ufbdev); | |
562 | return ret; | |
563 | ||
564 | } | |
565 | ||
566 | drm_fb_helper_single_add_all_connectors(&ufbdev->helper); | |
567 | drm_fb_helper_initial_config(&ufbdev->helper, bpp_sel); | |
568 | return 0; | |
569 | } | |
570 | ||
571 | void udl_fbdev_cleanup(struct drm_device *dev) | |
572 | { | |
573 | struct udl_device *udl = dev->dev_private; | |
574 | if (!udl->fbdev) | |
575 | return; | |
576 | ||
577 | udl_fbdev_destroy(dev, udl->fbdev); | |
578 | kfree(udl->fbdev); | |
579 | udl->fbdev = NULL; | |
580 | } | |
581 | ||
582 | void udl_fbdev_unplug(struct drm_device *dev) | |
583 | { | |
584 | struct udl_device *udl = dev->dev_private; | |
585 | struct udl_fbdev *ufbdev; | |
586 | if (!udl->fbdev) | |
587 | return; | |
588 | ||
589 | ufbdev = udl->fbdev; | |
590 | if (ufbdev->helper.fbdev) { | |
591 | struct fb_info *info; | |
592 | info = ufbdev->helper.fbdev; | |
593 | unlink_framebuffer(info); | |
594 | } | |
595 | } | |
596 | ||
597 | struct drm_framebuffer * | |
598 | udl_fb_user_fb_create(struct drm_device *dev, | |
599 | struct drm_file *file, | |
600 | struct drm_mode_fb_cmd2 *mode_cmd) | |
601 | { | |
602 | struct drm_gem_object *obj; | |
603 | struct udl_framebuffer *ufb; | |
604 | int ret; | |
96503f59 | 605 | uint32_t size; |
5320918b DA |
606 | |
607 | obj = drm_gem_object_lookup(dev, file, mode_cmd->handles[0]); | |
608 | if (obj == NULL) | |
609 | return ERR_PTR(-ENOENT); | |
610 | ||
96503f59 DA |
611 | size = mode_cmd->pitches[0] * mode_cmd->height; |
612 | size = ALIGN(size, PAGE_SIZE); | |
613 | ||
614 | if (size > obj->size) { | |
615 | DRM_ERROR("object size not sufficient for fb %d %zu %d %d\n", size, obj->size, mode_cmd->pitches[0], mode_cmd->height); | |
616 | return ERR_PTR(-ENOMEM); | |
617 | } | |
618 | ||
5320918b DA |
619 | ufb = kzalloc(sizeof(*ufb), GFP_KERNEL); |
620 | if (ufb == NULL) | |
621 | return ERR_PTR(-ENOMEM); | |
622 | ||
623 | ret = udl_framebuffer_init(dev, ufb, mode_cmd, to_udl_bo(obj)); | |
624 | if (ret) { | |
625 | kfree(ufb); | |
626 | return ERR_PTR(-EINVAL); | |
627 | } | |
628 | return &ufb->base; | |
629 | } |