Commit | Line | Data |
---|---|---|
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> | |
32ecd242 | 16 | #include <linux/dma-buf.h> |
5320918b | 17 | |
760285e7 DH |
18 | #include <drm/drmP.h> |
19 | #include <drm/drm_crtc.h> | |
20 | #include <drm/drm_crtc_helper.h> | |
5320918b DA |
21 | #include "udl_drv.h" |
22 | ||
760285e7 | 23 | #include <drm/drm_fb_helper.h> |
5320918b | 24 | |
677d23b7 | 25 | #define DL_DEFIO_WRITE_DELAY (HZ/20) /* fb_deferred_io.delay in jiffies */ |
5320918b | 26 | |
677d23b7 | 27 | static int fb_defio = 0; /* Optionally enable experimental fb_defio mmap support */ |
5320918b DA |
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; | |
5320918b DA |
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), | |
3916e1d7 DA |
116 | &urb, (char *) info->fix.smem_start, |
117 | &cmd, cur->index << PAGE_SHIFT, | |
118 | cur->index << PAGE_SHIFT, | |
119 | PAGE_SIZE, &bytes_identical, &bytes_sent)) | |
5320918b DA |
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); | |
bcb39af4 DA |
155 | int x2, y2; |
156 | bool store_for_later = false; | |
157 | unsigned long flags; | |
5320918b DA |
158 | |
159 | if (!fb->active_16) | |
160 | return 0; | |
161 | ||
e8aa1d1e DA |
162 | if (!fb->obj->vmapping) { |
163 | ret = udl_gem_vmap(fb->obj); | |
164 | if (ret == -ENOMEM) { | |
165 | DRM_ERROR("failed to vmap fb\n"); | |
166 | return 0; | |
167 | } | |
168 | if (!fb->obj->vmapping) { | |
169 | DRM_ERROR("failed to vmapping\n"); | |
170 | return 0; | |
171 | } | |
172 | } | |
5320918b | 173 | |
5320918b DA |
174 | aligned_x = DL_ALIGN_DOWN(x, sizeof(unsigned long)); |
175 | width = DL_ALIGN_UP(width + (x-aligned_x), sizeof(unsigned long)); | |
176 | x = aligned_x; | |
177 | ||
178 | if ((width <= 0) || | |
179 | (x + width > fb->base.width) || | |
180 | (y + height > fb->base.height)) | |
181 | return -EINVAL; | |
182 | ||
bcb39af4 DA |
183 | /* if we are in atomic just store the info |
184 | can't test inside spin lock */ | |
185 | if (in_atomic()) | |
186 | store_for_later = true; | |
187 | ||
188 | x2 = x + width - 1; | |
189 | y2 = y + height - 1; | |
190 | ||
191 | spin_lock_irqsave(&fb->dirty_lock, flags); | |
192 | ||
193 | if (fb->y1 < y) | |
194 | y = fb->y1; | |
195 | if (fb->y2 > y2) | |
196 | y2 = fb->y2; | |
197 | if (fb->x1 < x) | |
198 | x = fb->x1; | |
199 | if (fb->x2 > x2) | |
200 | x2 = fb->x2; | |
201 | ||
202 | if (store_for_later) { | |
203 | fb->x1 = x; | |
204 | fb->x2 = x2; | |
205 | fb->y1 = y; | |
206 | fb->y2 = y2; | |
207 | spin_unlock_irqrestore(&fb->dirty_lock, flags); | |
208 | return 0; | |
209 | } | |
210 | ||
211 | fb->x1 = fb->y1 = INT_MAX; | |
212 | fb->x2 = fb->y2 = 0; | |
213 | ||
214 | spin_unlock_irqrestore(&fb->dirty_lock, flags); | |
215 | start_cycles = get_cycles(); | |
216 | ||
5320918b DA |
217 | urb = udl_get_urb(dev); |
218 | if (!urb) | |
219 | return 0; | |
220 | cmd = urb->transfer_buffer; | |
221 | ||
bcb39af4 | 222 | for (i = y; i <= y2 ; i++) { |
5320918b DA |
223 | const int line_offset = fb->base.pitches[0] * i; |
224 | const int byte_offset = line_offset + (x * bpp); | |
3916e1d7 | 225 | const int dev_byte_offset = (fb->base.width * bpp * i) + (x * bpp); |
5320918b DA |
226 | if (udl_render_hline(dev, bpp, &urb, |
227 | (char *) fb->obj->vmapping, | |
3916e1d7 | 228 | &cmd, byte_offset, dev_byte_offset, |
bcb39af4 | 229 | (x2 - x + 1) * bpp, |
5320918b DA |
230 | &bytes_identical, &bytes_sent)) |
231 | goto error; | |
232 | } | |
233 | ||
234 | if (cmd > (char *) urb->transfer_buffer) { | |
235 | /* Send partial buffer remaining before exiting */ | |
236 | int len = cmd - (char *) urb->transfer_buffer; | |
237 | ret = udl_submit_urb(dev, urb, len); | |
238 | bytes_sent += len; | |
239 | } else | |
240 | udl_urb_completion(urb); | |
241 | ||
242 | error: | |
243 | atomic_add(bytes_sent, &udl->bytes_sent); | |
244 | atomic_add(bytes_identical, &udl->bytes_identical); | |
245 | atomic_add(width*height*bpp, &udl->bytes_rendered); | |
246 | end_cycles = get_cycles(); | |
247 | atomic_add(((unsigned int) ((end_cycles - start_cycles) | |
248 | >> 10)), /* Kcycles */ | |
249 | &udl->cpu_kcycles_used); | |
250 | ||
251 | return 0; | |
252 | } | |
253 | ||
254 | static int udl_fb_mmap(struct fb_info *info, struct vm_area_struct *vma) | |
255 | { | |
256 | unsigned long start = vma->vm_start; | |
257 | unsigned long size = vma->vm_end - vma->vm_start; | |
258 | unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; | |
259 | unsigned long page, pos; | |
260 | ||
261 | if (offset + size > info->fix.smem_len) | |
262 | return -EINVAL; | |
263 | ||
264 | pos = (unsigned long)info->fix.smem_start + offset; | |
265 | ||
266 | pr_notice("mmap() framebuffer addr:%lu size:%lu\n", | |
267 | pos, size); | |
268 | ||
269 | while (size > 0) { | |
270 | page = vmalloc_to_pfn((void *)pos); | |
271 | if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) | |
272 | return -EAGAIN; | |
273 | ||
274 | start += PAGE_SIZE; | |
275 | pos += PAGE_SIZE; | |
276 | if (size > PAGE_SIZE) | |
277 | size -= PAGE_SIZE; | |
278 | else | |
279 | size = 0; | |
280 | } | |
281 | ||
314e51b9 | 282 | /* VM_IO | VM_DONTEXPAND | VM_DONTDUMP are set by remap_pfn_range() */ |
5320918b DA |
283 | return 0; |
284 | } | |
285 | ||
286 | static void udl_fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) | |
287 | { | |
288 | struct udl_fbdev *ufbdev = info->par; | |
289 | ||
41ba2f34 | 290 | drm_fb_helper_sys_fillrect(info, rect); |
5320918b DA |
291 | |
292 | udl_handle_damage(&ufbdev->ufb, rect->dx, rect->dy, rect->width, | |
293 | rect->height); | |
294 | } | |
295 | ||
296 | static void udl_fb_copyarea(struct fb_info *info, const struct fb_copyarea *region) | |
297 | { | |
298 | struct udl_fbdev *ufbdev = info->par; | |
299 | ||
41ba2f34 | 300 | drm_fb_helper_sys_copyarea(info, region); |
5320918b DA |
301 | |
302 | udl_handle_damage(&ufbdev->ufb, region->dx, region->dy, region->width, | |
303 | region->height); | |
304 | } | |
305 | ||
306 | static void udl_fb_imageblit(struct fb_info *info, const struct fb_image *image) | |
307 | { | |
308 | struct udl_fbdev *ufbdev = info->par; | |
309 | ||
41ba2f34 | 310 | drm_fb_helper_sys_imageblit(info, image); |
5320918b DA |
311 | |
312 | udl_handle_damage(&ufbdev->ufb, image->dx, image->dy, image->width, | |
313 | image->height); | |
314 | } | |
315 | ||
316 | /* | |
317 | * It's common for several clients to have framebuffer open simultaneously. | |
318 | * e.g. both fbcon and X. Makes things interesting. | |
319 | * Assumes caller is holding info->lock (for open and release at least) | |
320 | */ | |
321 | static int udl_fb_open(struct fb_info *info, int user) | |
322 | { | |
323 | struct udl_fbdev *ufbdev = info->par; | |
324 | struct drm_device *dev = ufbdev->ufb.base.dev; | |
325 | struct udl_device *udl = dev->dev_private; | |
326 | ||
327 | /* If the USB device is gone, we don't accept new opens */ | |
328 | if (drm_device_is_unplugged(udl->ddev)) | |
329 | return -ENODEV; | |
330 | ||
331 | ufbdev->fb_count++; | |
332 | ||
333 | if (fb_defio && (info->fbdefio == NULL)) { | |
334 | /* enable defio at last moment if not disabled by client */ | |
335 | ||
336 | struct fb_deferred_io *fbdefio; | |
337 | ||
338 | fbdefio = kmalloc(sizeof(struct fb_deferred_io), GFP_KERNEL); | |
339 | ||
340 | if (fbdefio) { | |
341 | fbdefio->delay = DL_DEFIO_WRITE_DELAY; | |
342 | fbdefio->deferred_io = udlfb_dpy_deferred_io; | |
343 | } | |
344 | ||
345 | info->fbdefio = fbdefio; | |
346 | fb_deferred_io_init(info); | |
347 | } | |
348 | ||
349 | pr_notice("open /dev/fb%d user=%d fb_info=%p count=%d\n", | |
350 | info->node, user, info, ufbdev->fb_count); | |
351 | ||
352 | return 0; | |
353 | } | |
354 | ||
355 | ||
356 | /* | |
357 | * Assumes caller is holding info->lock mutex (for open and release at least) | |
358 | */ | |
359 | static int udl_fb_release(struct fb_info *info, int user) | |
360 | { | |
361 | struct udl_fbdev *ufbdev = info->par; | |
362 | ||
363 | ufbdev->fb_count--; | |
364 | ||
365 | if ((ufbdev->fb_count == 0) && (info->fbdefio)) { | |
366 | fb_deferred_io_cleanup(info); | |
367 | kfree(info->fbdefio); | |
368 | info->fbdefio = NULL; | |
369 | info->fbops->fb_mmap = udl_fb_mmap; | |
370 | } | |
371 | ||
372 | pr_warn("released /dev/fb%d user=%d count=%d\n", | |
373 | info->node, user, ufbdev->fb_count); | |
374 | ||
375 | return 0; | |
376 | } | |
377 | ||
378 | static struct fb_ops udlfb_ops = { | |
379 | .owner = THIS_MODULE, | |
380 | .fb_check_var = drm_fb_helper_check_var, | |
381 | .fb_set_par = drm_fb_helper_set_par, | |
382 | .fb_fillrect = udl_fb_fillrect, | |
383 | .fb_copyarea = udl_fb_copyarea, | |
384 | .fb_imageblit = udl_fb_imageblit, | |
385 | .fb_pan_display = drm_fb_helper_pan_display, | |
386 | .fb_blank = drm_fb_helper_blank, | |
387 | .fb_setcmap = drm_fb_helper_setcmap, | |
388 | .fb_debug_enter = drm_fb_helper_debug_enter, | |
389 | .fb_debug_leave = drm_fb_helper_debug_leave, | |
390 | .fb_mmap = udl_fb_mmap, | |
391 | .fb_open = udl_fb_open, | |
392 | .fb_release = udl_fb_release, | |
393 | }; | |
394 | ||
5320918b DA |
395 | static int udl_user_framebuffer_dirty(struct drm_framebuffer *fb, |
396 | struct drm_file *file, | |
397 | unsigned flags, unsigned color, | |
398 | struct drm_clip_rect *clips, | |
399 | unsigned num_clips) | |
400 | { | |
401 | struct udl_framebuffer *ufb = to_udl_fb(fb); | |
402 | int i; | |
32ecd242 | 403 | int ret = 0; |
5320918b | 404 | |
73e9efd4 VS |
405 | drm_modeset_lock_all(fb->dev); |
406 | ||
5320918b | 407 | if (!ufb->active_16) |
73e9efd4 | 408 | goto unlock; |
5320918b | 409 | |
32ecd242 DA |
410 | if (ufb->obj->base.import_attach) { |
411 | ret = dma_buf_begin_cpu_access(ufb->obj->base.import_attach->dmabuf, | |
32ecd242 DA |
412 | DMA_FROM_DEVICE); |
413 | if (ret) | |
73e9efd4 | 414 | goto unlock; |
32ecd242 DA |
415 | } |
416 | ||
5320918b | 417 | for (i = 0; i < num_clips; i++) { |
32ecd242 | 418 | ret = udl_handle_damage(ufb, clips[i].x1, clips[i].y1, |
5320918b DA |
419 | clips[i].x2 - clips[i].x1, |
420 | clips[i].y2 - clips[i].y1); | |
32ecd242 | 421 | if (ret) |
06c99161 | 422 | break; |
5320918b | 423 | } |
32ecd242 DA |
424 | |
425 | if (ufb->obj->base.import_attach) { | |
18b862dc CW |
426 | ret = dma_buf_end_cpu_access(ufb->obj->base.import_attach->dmabuf, |
427 | DMA_FROM_DEVICE); | |
32ecd242 | 428 | } |
73e9efd4 VS |
429 | |
430 | unlock: | |
431 | drm_modeset_unlock_all(fb->dev); | |
432 | ||
32ecd242 | 433 | return ret; |
5320918b DA |
434 | } |
435 | ||
436 | static void udl_user_framebuffer_destroy(struct drm_framebuffer *fb) | |
437 | { | |
438 | struct udl_framebuffer *ufb = to_udl_fb(fb); | |
439 | ||
440 | if (ufb->obj) | |
441 | drm_gem_object_unreference_unlocked(&ufb->obj->base); | |
442 | ||
443 | drm_framebuffer_cleanup(fb); | |
444 | kfree(ufb); | |
445 | } | |
446 | ||
447 | static const struct drm_framebuffer_funcs udlfb_funcs = { | |
448 | .destroy = udl_user_framebuffer_destroy, | |
449 | .dirty = udl_user_framebuffer_dirty, | |
5320918b DA |
450 | }; |
451 | ||
452 | ||
453 | static int | |
454 | udl_framebuffer_init(struct drm_device *dev, | |
455 | struct udl_framebuffer *ufb, | |
1eb83451 | 456 | const struct drm_mode_fb_cmd2 *mode_cmd, |
5320918b DA |
457 | struct udl_gem_object *obj) |
458 | { | |
459 | int ret; | |
460 | ||
bcb39af4 | 461 | spin_lock_init(&ufb->dirty_lock); |
5320918b | 462 | ufb->obj = obj; |
5320918b | 463 | drm_helper_mode_fill_fb_struct(&ufb->base, mode_cmd); |
c7d73f6a | 464 | ret = drm_framebuffer_init(dev, &ufb->base, &udlfb_funcs); |
5320918b DA |
465 | return ret; |
466 | } | |
467 | ||
468 | ||
cd5428a5 | 469 | static int udlfb_create(struct drm_fb_helper *helper, |
5320918b DA |
470 | struct drm_fb_helper_surface_size *sizes) |
471 | { | |
ee0d68ab FF |
472 | struct udl_fbdev *ufbdev = |
473 | container_of(helper, struct udl_fbdev, helper); | |
5320918b DA |
474 | struct drm_device *dev = ufbdev->helper.dev; |
475 | struct fb_info *info; | |
5320918b DA |
476 | struct drm_framebuffer *fb; |
477 | struct drm_mode_fb_cmd2 mode_cmd; | |
478 | struct udl_gem_object *obj; | |
479 | uint32_t size; | |
480 | int ret = 0; | |
481 | ||
482 | if (sizes->surface_bpp == 24) | |
483 | sizes->surface_bpp = 32; | |
484 | ||
485 | mode_cmd.width = sizes->surface_width; | |
486 | mode_cmd.height = sizes->surface_height; | |
487 | mode_cmd.pitches[0] = mode_cmd.width * ((sizes->surface_bpp + 7) / 8); | |
488 | ||
489 | mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, | |
490 | sizes->surface_depth); | |
491 | ||
492 | size = mode_cmd.pitches[0] * mode_cmd.height; | |
493 | size = ALIGN(size, PAGE_SIZE); | |
494 | ||
495 | obj = udl_gem_alloc_object(dev, size); | |
496 | if (!obj) | |
497 | goto out; | |
498 | ||
499 | ret = udl_gem_vmap(obj); | |
500 | if (ret) { | |
501 | DRM_ERROR("failed to vmap fb\n"); | |
502 | goto out_gfree; | |
503 | } | |
504 | ||
41ba2f34 AT |
505 | info = drm_fb_helper_alloc_fbi(helper); |
506 | if (IS_ERR(info)) { | |
507 | ret = PTR_ERR(info); | |
5320918b DA |
508 | goto out_gfree; |
509 | } | |
510 | info->par = ufbdev; | |
511 | ||
512 | ret = udl_framebuffer_init(dev, &ufbdev->ufb, &mode_cmd, obj); | |
513 | if (ret) | |
41ba2f34 | 514 | goto out_destroy_fbi; |
5320918b DA |
515 | |
516 | fb = &ufbdev->ufb.base; | |
517 | ||
518 | ufbdev->helper.fb = fb; | |
5320918b DA |
519 | |
520 | strcpy(info->fix.id, "udldrmfb"); | |
521 | ||
522 | info->screen_base = ufbdev->ufb.obj->vmapping; | |
523 | info->fix.smem_len = size; | |
524 | info->fix.smem_start = (unsigned long)ufbdev->ufb.obj->vmapping; | |
525 | ||
526 | info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT; | |
527 | info->fbops = &udlfb_ops; | |
528 | drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); | |
529 | drm_fb_helper_fill_var(info, &ufbdev->helper, sizes->fb_width, sizes->fb_height); | |
530 | ||
5320918b DA |
531 | DRM_DEBUG_KMS("allocated %dx%d vmal %p\n", |
532 | fb->width, fb->height, | |
533 | ufbdev->ufb.obj->vmapping); | |
534 | ||
535 | return ret; | |
41ba2f34 AT |
536 | out_destroy_fbi: |
537 | drm_fb_helper_release_fbi(helper); | |
5320918b | 538 | out_gfree: |
72b9ff06 | 539 | drm_gem_object_unreference_unlocked(&ufbdev->ufb.obj->base); |
5320918b DA |
540 | out: |
541 | return ret; | |
542 | } | |
543 | ||
3a493879 | 544 | static const struct drm_fb_helper_funcs udl_fb_helper_funcs = { |
cd5428a5 | 545 | .fb_probe = udlfb_create, |
5320918b DA |
546 | }; |
547 | ||
548 | static void udl_fbdev_destroy(struct drm_device *dev, | |
549 | struct udl_fbdev *ufbdev) | |
550 | { | |
41ba2f34 AT |
551 | drm_fb_helper_unregister_fbi(&ufbdev->helper); |
552 | drm_fb_helper_release_fbi(&ufbdev->helper); | |
5320918b | 553 | drm_fb_helper_fini(&ufbdev->helper); |
36206361 | 554 | drm_framebuffer_unregister_private(&ufbdev->ufb.base); |
5320918b DA |
555 | drm_framebuffer_cleanup(&ufbdev->ufb.base); |
556 | drm_gem_object_unreference_unlocked(&ufbdev->ufb.obj->base); | |
557 | } | |
558 | ||
559 | int udl_fbdev_init(struct drm_device *dev) | |
560 | { | |
561 | struct udl_device *udl = dev->dev_private; | |
562 | int bpp_sel = fb_bpp; | |
563 | struct udl_fbdev *ufbdev; | |
564 | int ret; | |
565 | ||
566 | ufbdev = kzalloc(sizeof(struct udl_fbdev), GFP_KERNEL); | |
567 | if (!ufbdev) | |
568 | return -ENOMEM; | |
569 | ||
570 | udl->fbdev = ufbdev; | |
10a23102 TR |
571 | |
572 | drm_fb_helper_prepare(dev, &ufbdev->helper, &udl_fb_helper_funcs); | |
5320918b DA |
573 | |
574 | ret = drm_fb_helper_init(dev, &ufbdev->helper, | |
575 | 1, 1); | |
01934c2a TR |
576 | if (ret) |
577 | goto free; | |
5320918b | 578 | |
01934c2a TR |
579 | ret = drm_fb_helper_single_add_all_connectors(&ufbdev->helper); |
580 | if (ret) | |
581 | goto fini; | |
76a39dbf DV |
582 | |
583 | /* disable all the possible outputs/crtcs before entering KMS mode */ | |
584 | drm_helper_disable_unused_functions(dev); | |
585 | ||
01934c2a TR |
586 | ret = drm_fb_helper_initial_config(&ufbdev->helper, bpp_sel); |
587 | if (ret) | |
588 | goto fini; | |
589 | ||
5320918b | 590 | return 0; |
01934c2a TR |
591 | |
592 | fini: | |
593 | drm_fb_helper_fini(&ufbdev->helper); | |
594 | free: | |
595 | kfree(ufbdev); | |
596 | return ret; | |
5320918b DA |
597 | } |
598 | ||
599 | void udl_fbdev_cleanup(struct drm_device *dev) | |
600 | { | |
601 | struct udl_device *udl = dev->dev_private; | |
602 | if (!udl->fbdev) | |
603 | return; | |
604 | ||
605 | udl_fbdev_destroy(dev, udl->fbdev); | |
606 | kfree(udl->fbdev); | |
607 | udl->fbdev = NULL; | |
608 | } | |
609 | ||
610 | void udl_fbdev_unplug(struct drm_device *dev) | |
611 | { | |
612 | struct udl_device *udl = dev->dev_private; | |
613 | struct udl_fbdev *ufbdev; | |
614 | if (!udl->fbdev) | |
615 | return; | |
616 | ||
617 | ufbdev = udl->fbdev; | |
41ba2f34 | 618 | drm_fb_helper_unlink_fbi(&ufbdev->helper); |
5320918b DA |
619 | } |
620 | ||
621 | struct drm_framebuffer * | |
622 | udl_fb_user_fb_create(struct drm_device *dev, | |
623 | struct drm_file *file, | |
1eb83451 | 624 | const struct drm_mode_fb_cmd2 *mode_cmd) |
5320918b DA |
625 | { |
626 | struct drm_gem_object *obj; | |
627 | struct udl_framebuffer *ufb; | |
628 | int ret; | |
96503f59 | 629 | uint32_t size; |
5320918b DA |
630 | |
631 | obj = drm_gem_object_lookup(dev, file, mode_cmd->handles[0]); | |
632 | if (obj == NULL) | |
633 | return ERR_PTR(-ENOENT); | |
634 | ||
96503f59 DA |
635 | size = mode_cmd->pitches[0] * mode_cmd->height; |
636 | size = ALIGN(size, PAGE_SIZE); | |
637 | ||
638 | if (size > obj->size) { | |
639 | DRM_ERROR("object size not sufficient for fb %d %zu %d %d\n", size, obj->size, mode_cmd->pitches[0], mode_cmd->height); | |
640 | return ERR_PTR(-ENOMEM); | |
641 | } | |
642 | ||
5320918b DA |
643 | ufb = kzalloc(sizeof(*ufb), GFP_KERNEL); |
644 | if (ufb == NULL) | |
645 | return ERR_PTR(-ENOMEM); | |
646 | ||
647 | ret = udl_framebuffer_init(dev, ufb, mode_cmd, to_udl_bo(obj)); | |
648 | if (ret) { | |
649 | kfree(ufb); | |
650 | return ERR_PTR(-EINVAL); | |
651 | } | |
652 | return &ufb->base; | |
653 | } |