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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 | ||
760285e7 DH |
17 | #include <drm/drmP.h> |
18 | #include <drm/drm_crtc.h> | |
19 | #include <drm/drm_crtc_helper.h> | |
5320918b DA |
20 | #include "udl_drv.h" |
21 | ||
760285e7 | 22 | #include <drm/drm_fb_helper.h> |
5320918b DA |
23 | |
24 | #define DL_DEFIO_WRITE_DELAY 5 /* fb_deferred_io.delay in jiffies */ | |
25 | ||
26 | static int fb_defio = 1; /* Optionally enable experimental fb_defio mmap support */ | |
27 | static int fb_bpp = 16; | |
28 | ||
29 | module_param(fb_bpp, int, S_IWUSR | S_IRUSR | S_IWGRP | S_IRGRP); | |
30 | module_param(fb_defio, int, S_IWUSR | S_IRUSR | S_IWGRP | S_IRGRP); | |
31 | ||
32 | struct udl_fbdev { | |
33 | struct drm_fb_helper helper; | |
34 | struct udl_framebuffer ufb; | |
35 | struct list_head fbdev_list; | |
36 | int fb_count; | |
37 | }; | |
38 | ||
39 | #define DL_ALIGN_UP(x, a) ALIGN(x, a) | |
40 | #define DL_ALIGN_DOWN(x, a) ALIGN(x-(a-1), a) | |
41 | ||
42 | /** Read the red component (0..255) of a 32 bpp colour. */ | |
43 | #define DLO_RGB_GETRED(col) (uint8_t)((col) & 0xFF) | |
44 | ||
45 | /** Read the green component (0..255) of a 32 bpp colour. */ | |
46 | #define DLO_RGB_GETGRN(col) (uint8_t)(((col) >> 8) & 0xFF) | |
47 | ||
48 | /** Read the blue component (0..255) of a 32 bpp colour. */ | |
49 | #define DLO_RGB_GETBLU(col) (uint8_t)(((col) >> 16) & 0xFF) | |
50 | ||
51 | /** Return red/green component of a 16 bpp colour number. */ | |
52 | #define DLO_RG16(red, grn) (uint8_t)((((red) & 0xF8) | ((grn) >> 5)) & 0xFF) | |
53 | ||
54 | /** Return green/blue component of a 16 bpp colour number. */ | |
55 | #define DLO_GB16(grn, blu) (uint8_t)(((((grn) & 0x1C) << 3) | ((blu) >> 3)) & 0xFF) | |
56 | ||
57 | /** Return 8 bpp colour number from red, green and blue components. */ | |
58 | #define DLO_RGB8(red, grn, blu) ((((red) << 5) | (((grn) & 3) << 3) | ((blu) & 7)) & 0xFF) | |
59 | ||
60 | #if 0 | |
61 | static uint8_t rgb8(uint32_t col) | |
62 | { | |
63 | uint8_t red = DLO_RGB_GETRED(col); | |
64 | uint8_t grn = DLO_RGB_GETGRN(col); | |
65 | uint8_t blu = DLO_RGB_GETBLU(col); | |
66 | ||
67 | return DLO_RGB8(red, grn, blu); | |
68 | } | |
69 | ||
70 | static uint16_t rgb16(uint32_t col) | |
71 | { | |
72 | uint8_t red = DLO_RGB_GETRED(col); | |
73 | uint8_t grn = DLO_RGB_GETGRN(col); | |
74 | uint8_t blu = DLO_RGB_GETBLU(col); | |
75 | ||
76 | return (DLO_RG16(red, grn) << 8) + DLO_GB16(grn, blu); | |
77 | } | |
78 | #endif | |
79 | ||
80 | /* | |
81 | * NOTE: fb_defio.c is holding info->fbdefio.mutex | |
82 | * Touching ANY framebuffer memory that triggers a page fault | |
83 | * in fb_defio will cause a deadlock, when it also tries to | |
84 | * grab the same mutex. | |
85 | */ | |
86 | static void udlfb_dpy_deferred_io(struct fb_info *info, | |
87 | struct list_head *pagelist) | |
88 | { | |
89 | struct page *cur; | |
90 | struct fb_deferred_io *fbdefio = info->fbdefio; | |
91 | struct udl_fbdev *ufbdev = info->par; | |
92 | struct drm_device *dev = ufbdev->ufb.base.dev; | |
93 | struct udl_device *udl = dev->dev_private; | |
94 | struct urb *urb; | |
95 | char *cmd; | |
96 | cycles_t start_cycles, end_cycles; | |
97 | int bytes_sent = 0; | |
98 | int bytes_identical = 0; | |
99 | int bytes_rendered = 0; | |
100 | ||
101 | if (!fb_defio) | |
102 | return; | |
103 | ||
104 | start_cycles = get_cycles(); | |
105 | ||
106 | urb = udl_get_urb(dev); | |
107 | if (!urb) | |
108 | return; | |
109 | ||
110 | cmd = urb->transfer_buffer; | |
111 | ||
112 | /* walk the written page list and render each to device */ | |
113 | list_for_each_entry(cur, &fbdefio->pagelist, lru) { | |
114 | ||
115 | if (udl_render_hline(dev, (ufbdev->ufb.base.bits_per_pixel / 8), | |
116 | &urb, (char *) info->fix.smem_start, | |
117 | &cmd, cur->index << PAGE_SHIFT, | |
118 | PAGE_SIZE, &bytes_identical, &bytes_sent)) | |
119 | goto error; | |
120 | bytes_rendered += PAGE_SIZE; | |
121 | } | |
122 | ||
123 | if (cmd > (char *) urb->transfer_buffer) { | |
124 | /* Send partial buffer remaining before exiting */ | |
125 | int len = cmd - (char *) urb->transfer_buffer; | |
126 | udl_submit_urb(dev, urb, len); | |
127 | bytes_sent += len; | |
128 | } else | |
129 | udl_urb_completion(urb); | |
130 | ||
131 | error: | |
132 | atomic_add(bytes_sent, &udl->bytes_sent); | |
133 | atomic_add(bytes_identical, &udl->bytes_identical); | |
134 | atomic_add(bytes_rendered, &udl->bytes_rendered); | |
135 | end_cycles = get_cycles(); | |
136 | atomic_add(((unsigned int) ((end_cycles - start_cycles) | |
137 | >> 10)), /* Kcycles */ | |
138 | &udl->cpu_kcycles_used); | |
139 | } | |
140 | ||
141 | int udl_handle_damage(struct udl_framebuffer *fb, int x, int y, | |
142 | int width, int height) | |
143 | { | |
144 | struct drm_device *dev = fb->base.dev; | |
145 | struct udl_device *udl = dev->dev_private; | |
146 | int i, ret; | |
147 | char *cmd; | |
148 | cycles_t start_cycles, end_cycles; | |
149 | int bytes_sent = 0; | |
150 | int bytes_identical = 0; | |
151 | struct urb *urb; | |
152 | int aligned_x; | |
153 | int bpp = (fb->base.bits_per_pixel / 8); | |
154 | ||
155 | if (!fb->active_16) | |
156 | return 0; | |
157 | ||
e8aa1d1e DA |
158 | if (!fb->obj->vmapping) { |
159 | ret = udl_gem_vmap(fb->obj); | |
160 | if (ret == -ENOMEM) { | |
161 | DRM_ERROR("failed to vmap fb\n"); | |
162 | return 0; | |
163 | } | |
164 | if (!fb->obj->vmapping) { | |
165 | DRM_ERROR("failed to vmapping\n"); | |
166 | return 0; | |
167 | } | |
168 | } | |
5320918b DA |
169 | |
170 | start_cycles = get_cycles(); | |
171 | ||
172 | aligned_x = DL_ALIGN_DOWN(x, sizeof(unsigned long)); | |
173 | width = DL_ALIGN_UP(width + (x-aligned_x), sizeof(unsigned long)); | |
174 | x = aligned_x; | |
175 | ||
176 | if ((width <= 0) || | |
177 | (x + width > fb->base.width) || | |
178 | (y + height > fb->base.height)) | |
179 | return -EINVAL; | |
180 | ||
181 | urb = udl_get_urb(dev); | |
182 | if (!urb) | |
183 | return 0; | |
184 | cmd = urb->transfer_buffer; | |
185 | ||
186 | for (i = y; i < y + height ; i++) { | |
187 | const int line_offset = fb->base.pitches[0] * i; | |
188 | const int byte_offset = line_offset + (x * bpp); | |
189 | ||
190 | if (udl_render_hline(dev, bpp, &urb, | |
191 | (char *) fb->obj->vmapping, | |
192 | &cmd, byte_offset, width * bpp, | |
193 | &bytes_identical, &bytes_sent)) | |
194 | goto error; | |
195 | } | |
196 | ||
197 | if (cmd > (char *) urb->transfer_buffer) { | |
198 | /* Send partial buffer remaining before exiting */ | |
199 | int len = cmd - (char *) urb->transfer_buffer; | |
200 | ret = udl_submit_urb(dev, urb, len); | |
201 | bytes_sent += len; | |
202 | } else | |
203 | udl_urb_completion(urb); | |
204 | ||
205 | error: | |
206 | atomic_add(bytes_sent, &udl->bytes_sent); | |
207 | atomic_add(bytes_identical, &udl->bytes_identical); | |
208 | atomic_add(width*height*bpp, &udl->bytes_rendered); | |
209 | end_cycles = get_cycles(); | |
210 | atomic_add(((unsigned int) ((end_cycles - start_cycles) | |
211 | >> 10)), /* Kcycles */ | |
212 | &udl->cpu_kcycles_used); | |
213 | ||
214 | return 0; | |
215 | } | |
216 | ||
217 | static int udl_fb_mmap(struct fb_info *info, struct vm_area_struct *vma) | |
218 | { | |
219 | unsigned long start = vma->vm_start; | |
220 | unsigned long size = vma->vm_end - vma->vm_start; | |
221 | unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; | |
222 | unsigned long page, pos; | |
223 | ||
224 | if (offset + size > info->fix.smem_len) | |
225 | return -EINVAL; | |
226 | ||
227 | pos = (unsigned long)info->fix.smem_start + offset; | |
228 | ||
229 | pr_notice("mmap() framebuffer addr:%lu size:%lu\n", | |
230 | pos, size); | |
231 | ||
232 | while (size > 0) { | |
233 | page = vmalloc_to_pfn((void *)pos); | |
234 | if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) | |
235 | return -EAGAIN; | |
236 | ||
237 | start += PAGE_SIZE; | |
238 | pos += PAGE_SIZE; | |
239 | if (size > PAGE_SIZE) | |
240 | size -= PAGE_SIZE; | |
241 | else | |
242 | size = 0; | |
243 | } | |
244 | ||
245 | vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */ | |
246 | return 0; | |
247 | } | |
248 | ||
249 | static void udl_fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) | |
250 | { | |
251 | struct udl_fbdev *ufbdev = info->par; | |
252 | ||
253 | sys_fillrect(info, rect); | |
254 | ||
255 | udl_handle_damage(&ufbdev->ufb, rect->dx, rect->dy, rect->width, | |
256 | rect->height); | |
257 | } | |
258 | ||
259 | static void udl_fb_copyarea(struct fb_info *info, const struct fb_copyarea *region) | |
260 | { | |
261 | struct udl_fbdev *ufbdev = info->par; | |
262 | ||
263 | sys_copyarea(info, region); | |
264 | ||
265 | udl_handle_damage(&ufbdev->ufb, region->dx, region->dy, region->width, | |
266 | region->height); | |
267 | } | |
268 | ||
269 | static void udl_fb_imageblit(struct fb_info *info, const struct fb_image *image) | |
270 | { | |
271 | struct udl_fbdev *ufbdev = info->par; | |
272 | ||
273 | sys_imageblit(info, image); | |
274 | ||
275 | udl_handle_damage(&ufbdev->ufb, image->dx, image->dy, image->width, | |
276 | image->height); | |
277 | } | |
278 | ||
279 | /* | |
280 | * It's common for several clients to have framebuffer open simultaneously. | |
281 | * e.g. both fbcon and X. Makes things interesting. | |
282 | * Assumes caller is holding info->lock (for open and release at least) | |
283 | */ | |
284 | static int udl_fb_open(struct fb_info *info, int user) | |
285 | { | |
286 | struct udl_fbdev *ufbdev = info->par; | |
287 | struct drm_device *dev = ufbdev->ufb.base.dev; | |
288 | struct udl_device *udl = dev->dev_private; | |
289 | ||
290 | /* If the USB device is gone, we don't accept new opens */ | |
291 | if (drm_device_is_unplugged(udl->ddev)) | |
292 | return -ENODEV; | |
293 | ||
294 | ufbdev->fb_count++; | |
295 | ||
296 | if (fb_defio && (info->fbdefio == NULL)) { | |
297 | /* enable defio at last moment if not disabled by client */ | |
298 | ||
299 | struct fb_deferred_io *fbdefio; | |
300 | ||
301 | fbdefio = kmalloc(sizeof(struct fb_deferred_io), GFP_KERNEL); | |
302 | ||
303 | if (fbdefio) { | |
304 | fbdefio->delay = DL_DEFIO_WRITE_DELAY; | |
305 | fbdefio->deferred_io = udlfb_dpy_deferred_io; | |
306 | } | |
307 | ||
308 | info->fbdefio = fbdefio; | |
309 | fb_deferred_io_init(info); | |
310 | } | |
311 | ||
312 | pr_notice("open /dev/fb%d user=%d fb_info=%p count=%d\n", | |
313 | info->node, user, info, ufbdev->fb_count); | |
314 | ||
315 | return 0; | |
316 | } | |
317 | ||
318 | ||
319 | /* | |
320 | * Assumes caller is holding info->lock mutex (for open and release at least) | |
321 | */ | |
322 | static int udl_fb_release(struct fb_info *info, int user) | |
323 | { | |
324 | struct udl_fbdev *ufbdev = info->par; | |
325 | ||
326 | ufbdev->fb_count--; | |
327 | ||
328 | if ((ufbdev->fb_count == 0) && (info->fbdefio)) { | |
329 | fb_deferred_io_cleanup(info); | |
330 | kfree(info->fbdefio); | |
331 | info->fbdefio = NULL; | |
332 | info->fbops->fb_mmap = udl_fb_mmap; | |
333 | } | |
334 | ||
335 | pr_warn("released /dev/fb%d user=%d count=%d\n", | |
336 | info->node, user, ufbdev->fb_count); | |
337 | ||
338 | return 0; | |
339 | } | |
340 | ||
341 | static struct fb_ops udlfb_ops = { | |
342 | .owner = THIS_MODULE, | |
343 | .fb_check_var = drm_fb_helper_check_var, | |
344 | .fb_set_par = drm_fb_helper_set_par, | |
345 | .fb_fillrect = udl_fb_fillrect, | |
346 | .fb_copyarea = udl_fb_copyarea, | |
347 | .fb_imageblit = udl_fb_imageblit, | |
348 | .fb_pan_display = drm_fb_helper_pan_display, | |
349 | .fb_blank = drm_fb_helper_blank, | |
350 | .fb_setcmap = drm_fb_helper_setcmap, | |
351 | .fb_debug_enter = drm_fb_helper_debug_enter, | |
352 | .fb_debug_leave = drm_fb_helper_debug_leave, | |
353 | .fb_mmap = udl_fb_mmap, | |
354 | .fb_open = udl_fb_open, | |
355 | .fb_release = udl_fb_release, | |
356 | }; | |
357 | ||
358 | void udl_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, | |
359 | u16 blue, int regno) | |
360 | { | |
361 | } | |
362 | ||
363 | void udl_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green, | |
364 | u16 *blue, int regno) | |
365 | { | |
366 | *red = 0; | |
367 | *green = 0; | |
368 | *blue = 0; | |
369 | } | |
370 | ||
371 | static int udl_user_framebuffer_dirty(struct drm_framebuffer *fb, | |
372 | struct drm_file *file, | |
373 | unsigned flags, unsigned color, | |
374 | struct drm_clip_rect *clips, | |
375 | unsigned num_clips) | |
376 | { | |
377 | struct udl_framebuffer *ufb = to_udl_fb(fb); | |
378 | int i; | |
379 | ||
380 | if (!ufb->active_16) | |
381 | return 0; | |
382 | ||
383 | for (i = 0; i < num_clips; i++) { | |
384 | udl_handle_damage(ufb, clips[i].x1, clips[i].y1, | |
385 | clips[i].x2 - clips[i].x1, | |
386 | clips[i].y2 - clips[i].y1); | |
387 | } | |
388 | return 0; | |
389 | } | |
390 | ||
391 | static void udl_user_framebuffer_destroy(struct drm_framebuffer *fb) | |
392 | { | |
393 | struct udl_framebuffer *ufb = to_udl_fb(fb); | |
394 | ||
395 | if (ufb->obj) | |
396 | drm_gem_object_unreference_unlocked(&ufb->obj->base); | |
397 | ||
398 | drm_framebuffer_cleanup(fb); | |
399 | kfree(ufb); | |
400 | } | |
401 | ||
402 | static const struct drm_framebuffer_funcs udlfb_funcs = { | |
403 | .destroy = udl_user_framebuffer_destroy, | |
404 | .dirty = udl_user_framebuffer_dirty, | |
405 | .create_handle = NULL, | |
406 | }; | |
407 | ||
408 | ||
409 | static int | |
410 | udl_framebuffer_init(struct drm_device *dev, | |
411 | struct udl_framebuffer *ufb, | |
412 | struct drm_mode_fb_cmd2 *mode_cmd, | |
413 | struct udl_gem_object *obj) | |
414 | { | |
415 | int ret; | |
416 | ||
417 | ufb->obj = obj; | |
418 | ret = drm_framebuffer_init(dev, &ufb->base, &udlfb_funcs); | |
419 | drm_helper_mode_fill_fb_struct(&ufb->base, mode_cmd); | |
420 | return ret; | |
421 | } | |
422 | ||
423 | ||
424 | static int udlfb_create(struct udl_fbdev *ufbdev, | |
425 | struct drm_fb_helper_surface_size *sizes) | |
426 | { | |
427 | struct drm_device *dev = ufbdev->helper.dev; | |
428 | struct fb_info *info; | |
429 | struct device *device = &dev->usbdev->dev; | |
430 | struct drm_framebuffer *fb; | |
431 | struct drm_mode_fb_cmd2 mode_cmd; | |
432 | struct udl_gem_object *obj; | |
433 | uint32_t size; | |
434 | int ret = 0; | |
435 | ||
436 | if (sizes->surface_bpp == 24) | |
437 | sizes->surface_bpp = 32; | |
438 | ||
439 | mode_cmd.width = sizes->surface_width; | |
440 | mode_cmd.height = sizes->surface_height; | |
441 | mode_cmd.pitches[0] = mode_cmd.width * ((sizes->surface_bpp + 7) / 8); | |
442 | ||
443 | mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, | |
444 | sizes->surface_depth); | |
445 | ||
446 | size = mode_cmd.pitches[0] * mode_cmd.height; | |
447 | size = ALIGN(size, PAGE_SIZE); | |
448 | ||
449 | obj = udl_gem_alloc_object(dev, size); | |
450 | if (!obj) | |
451 | goto out; | |
452 | ||
453 | ret = udl_gem_vmap(obj); | |
454 | if (ret) { | |
455 | DRM_ERROR("failed to vmap fb\n"); | |
456 | goto out_gfree; | |
457 | } | |
458 | ||
459 | info = framebuffer_alloc(0, device); | |
460 | if (!info) { | |
461 | ret = -ENOMEM; | |
462 | goto out_gfree; | |
463 | } | |
464 | info->par = ufbdev; | |
465 | ||
466 | ret = udl_framebuffer_init(dev, &ufbdev->ufb, &mode_cmd, obj); | |
467 | if (ret) | |
468 | goto out_gfree; | |
469 | ||
470 | fb = &ufbdev->ufb.base; | |
471 | ||
472 | ufbdev->helper.fb = fb; | |
473 | ufbdev->helper.fbdev = info; | |
474 | ||
475 | strcpy(info->fix.id, "udldrmfb"); | |
476 | ||
477 | info->screen_base = ufbdev->ufb.obj->vmapping; | |
478 | info->fix.smem_len = size; | |
479 | info->fix.smem_start = (unsigned long)ufbdev->ufb.obj->vmapping; | |
480 | ||
481 | info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT; | |
482 | info->fbops = &udlfb_ops; | |
483 | drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); | |
484 | drm_fb_helper_fill_var(info, &ufbdev->helper, sizes->fb_width, sizes->fb_height); | |
485 | ||
486 | ret = fb_alloc_cmap(&info->cmap, 256, 0); | |
487 | if (ret) { | |
488 | ret = -ENOMEM; | |
489 | goto out_gfree; | |
490 | } | |
491 | ||
492 | ||
493 | DRM_DEBUG_KMS("allocated %dx%d vmal %p\n", | |
494 | fb->width, fb->height, | |
495 | ufbdev->ufb.obj->vmapping); | |
496 | ||
497 | return ret; | |
498 | out_gfree: | |
499 | drm_gem_object_unreference(&ufbdev->ufb.obj->base); | |
500 | out: | |
501 | return ret; | |
502 | } | |
503 | ||
504 | static int udl_fb_find_or_create_single(struct drm_fb_helper *helper, | |
505 | struct drm_fb_helper_surface_size *sizes) | |
506 | { | |
507 | struct udl_fbdev *ufbdev = (struct udl_fbdev *)helper; | |
508 | int new_fb = 0; | |
509 | int ret; | |
510 | ||
511 | if (!helper->fb) { | |
512 | ret = udlfb_create(ufbdev, sizes); | |
513 | if (ret) | |
514 | return ret; | |
515 | ||
516 | new_fb = 1; | |
517 | } | |
518 | return new_fb; | |
519 | } | |
520 | ||
521 | static struct drm_fb_helper_funcs udl_fb_helper_funcs = { | |
522 | .gamma_set = udl_crtc_fb_gamma_set, | |
523 | .gamma_get = udl_crtc_fb_gamma_get, | |
524 | .fb_probe = udl_fb_find_or_create_single, | |
525 | }; | |
526 | ||
527 | static void udl_fbdev_destroy(struct drm_device *dev, | |
528 | struct udl_fbdev *ufbdev) | |
529 | { | |
530 | struct fb_info *info; | |
531 | if (ufbdev->helper.fbdev) { | |
532 | info = ufbdev->helper.fbdev; | |
533 | unregister_framebuffer(info); | |
534 | if (info->cmap.len) | |
535 | fb_dealloc_cmap(&info->cmap); | |
536 | framebuffer_release(info); | |
537 | } | |
538 | drm_fb_helper_fini(&ufbdev->helper); | |
539 | drm_framebuffer_cleanup(&ufbdev->ufb.base); | |
540 | drm_gem_object_unreference_unlocked(&ufbdev->ufb.obj->base); | |
541 | } | |
542 | ||
543 | int udl_fbdev_init(struct drm_device *dev) | |
544 | { | |
545 | struct udl_device *udl = dev->dev_private; | |
546 | int bpp_sel = fb_bpp; | |
547 | struct udl_fbdev *ufbdev; | |
548 | int ret; | |
549 | ||
550 | ufbdev = kzalloc(sizeof(struct udl_fbdev), GFP_KERNEL); | |
551 | if (!ufbdev) | |
552 | return -ENOMEM; | |
553 | ||
554 | udl->fbdev = ufbdev; | |
555 | ufbdev->helper.funcs = &udl_fb_helper_funcs; | |
556 | ||
557 | ret = drm_fb_helper_init(dev, &ufbdev->helper, | |
558 | 1, 1); | |
559 | if (ret) { | |
560 | kfree(ufbdev); | |
561 | return ret; | |
562 | ||
563 | } | |
564 | ||
565 | drm_fb_helper_single_add_all_connectors(&ufbdev->helper); | |
566 | drm_fb_helper_initial_config(&ufbdev->helper, bpp_sel); | |
567 | return 0; | |
568 | } | |
569 | ||
570 | void udl_fbdev_cleanup(struct drm_device *dev) | |
571 | { | |
572 | struct udl_device *udl = dev->dev_private; | |
573 | if (!udl->fbdev) | |
574 | return; | |
575 | ||
576 | udl_fbdev_destroy(dev, udl->fbdev); | |
577 | kfree(udl->fbdev); | |
578 | udl->fbdev = NULL; | |
579 | } | |
580 | ||
581 | void udl_fbdev_unplug(struct drm_device *dev) | |
582 | { | |
583 | struct udl_device *udl = dev->dev_private; | |
584 | struct udl_fbdev *ufbdev; | |
585 | if (!udl->fbdev) | |
586 | return; | |
587 | ||
588 | ufbdev = udl->fbdev; | |
589 | if (ufbdev->helper.fbdev) { | |
590 | struct fb_info *info; | |
591 | info = ufbdev->helper.fbdev; | |
592 | unlink_framebuffer(info); | |
593 | } | |
594 | } | |
595 | ||
596 | struct drm_framebuffer * | |
597 | udl_fb_user_fb_create(struct drm_device *dev, | |
598 | struct drm_file *file, | |
599 | struct drm_mode_fb_cmd2 *mode_cmd) | |
600 | { | |
601 | struct drm_gem_object *obj; | |
602 | struct udl_framebuffer *ufb; | |
603 | int ret; | |
96503f59 | 604 | uint32_t size; |
5320918b DA |
605 | |
606 | obj = drm_gem_object_lookup(dev, file, mode_cmd->handles[0]); | |
607 | if (obj == NULL) | |
608 | return ERR_PTR(-ENOENT); | |
609 | ||
96503f59 DA |
610 | size = mode_cmd->pitches[0] * mode_cmd->height; |
611 | size = ALIGN(size, PAGE_SIZE); | |
612 | ||
613 | if (size > obj->size) { | |
614 | DRM_ERROR("object size not sufficient for fb %d %zu %d %d\n", size, obj->size, mode_cmd->pitches[0], mode_cmd->height); | |
615 | return ERR_PTR(-ENOMEM); | |
616 | } | |
617 | ||
5320918b DA |
618 | ufb = kzalloc(sizeof(*ufb), GFP_KERNEL); |
619 | if (ufb == NULL) | |
620 | return ERR_PTR(-ENOMEM); | |
621 | ||
622 | ret = udl_framebuffer_init(dev, ufb, mode_cmd, to_udl_bo(obj)); | |
623 | if (ret) { | |
624 | kfree(ufb); | |
625 | return ERR_PTR(-EINVAL); | |
626 | } | |
627 | return &ufb->base; | |
628 | } |