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1 | /* |
2 | * Copyright (c) 2006-2009 Red Hat Inc. | |
3 | * Copyright (c) 2006-2008 Intel Corporation | |
4 | * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> | |
5 | * | |
6 | * DRM framebuffer helper functions | |
7 | * | |
8 | * Permission to use, copy, modify, distribute, and sell this software and its | |
9 | * documentation for any purpose is hereby granted without fee, provided that | |
10 | * the above copyright notice appear in all copies and that both that copyright | |
11 | * notice and this permission notice appear in supporting documentation, and | |
12 | * that the name of the copyright holders not be used in advertising or | |
13 | * publicity pertaining to distribution of the software without specific, | |
14 | * written prior permission. The copyright holders make no representations | |
15 | * about the suitability of this software for any purpose. It is provided "as | |
16 | * is" without express or implied warranty. | |
17 | * | |
18 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
19 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
20 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
21 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
22 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
23 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
24 | * OF THIS SOFTWARE. | |
25 | * | |
26 | * Authors: | |
27 | * Dave Airlie <airlied@linux.ie> | |
28 | * Jesse Barnes <jesse.barnes@intel.com> | |
29 | */ | |
30 | #include <linux/sysrq.h> | |
31 | #include <linux/fb.h> | |
32 | #include "drmP.h" | |
33 | #include "drm_crtc.h" | |
34 | #include "drm_fb_helper.h" | |
35 | #include "drm_crtc_helper.h" | |
36 | ||
37 | static LIST_HEAD(kernel_fb_helper_list); | |
38 | ||
39 | bool drm_fb_helper_force_kernel_mode(void) | |
40 | { | |
41 | int i = 0; | |
42 | bool ret, error = false; | |
43 | struct drm_fb_helper *helper; | |
44 | ||
45 | if (list_empty(&kernel_fb_helper_list)) | |
46 | return false; | |
47 | ||
48 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { | |
49 | for (i = 0; i < helper->crtc_count; i++) { | |
50 | struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set; | |
51 | ret = drm_crtc_helper_set_config(mode_set); | |
52 | if (ret) | |
53 | error = true; | |
54 | } | |
55 | } | |
56 | return error; | |
57 | } | |
58 | ||
59 | int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed, | |
60 | void *panic_str) | |
61 | { | |
62 | DRM_ERROR("panic occurred, switching back to text console\n"); | |
63 | return drm_fb_helper_force_kernel_mode(); | |
64 | return 0; | |
65 | } | |
66 | EXPORT_SYMBOL(drm_fb_helper_panic); | |
67 | ||
68 | static struct notifier_block paniced = { | |
69 | .notifier_call = drm_fb_helper_panic, | |
70 | }; | |
71 | ||
72 | /** | |
73 | * drm_fb_helper_restore - restore the framebuffer console (kernel) config | |
74 | * | |
75 | * Restore's the kernel's fbcon mode, used for lastclose & panic paths. | |
76 | */ | |
77 | void drm_fb_helper_restore(void) | |
78 | { | |
79 | bool ret; | |
80 | ret = drm_fb_helper_force_kernel_mode(); | |
81 | if (ret == true) | |
82 | DRM_ERROR("Failed to restore crtc configuration\n"); | |
83 | } | |
84 | EXPORT_SYMBOL(drm_fb_helper_restore); | |
85 | ||
86 | static void drm_fb_helper_restore_work_fn(struct work_struct *ignored) | |
87 | { | |
88 | drm_fb_helper_restore(); | |
89 | } | |
90 | static DECLARE_WORK(drm_fb_helper_restore_work, drm_fb_helper_restore_work_fn); | |
91 | ||
92 | static void drm_fb_helper_sysrq(int dummy1, struct tty_struct *dummy3) | |
93 | { | |
94 | schedule_work(&drm_fb_helper_restore_work); | |
95 | } | |
96 | ||
97 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { | |
98 | .handler = drm_fb_helper_sysrq, | |
99 | .help_msg = "force-fb(V)", | |
100 | .action_msg = "Restore framebuffer console", | |
101 | }; | |
102 | ||
103 | static void drm_fb_helper_on(struct fb_info *info) | |
104 | { | |
105 | struct drm_fb_helper *fb_helper = info->par; | |
106 | struct drm_device *dev = fb_helper->dev; | |
107 | struct drm_crtc *crtc; | |
108 | struct drm_encoder *encoder; | |
109 | int i; | |
110 | ||
111 | /* | |
112 | * For each CRTC in this fb, turn the crtc on then, | |
113 | * find all associated encoders and turn them on. | |
114 | */ | |
115 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
116 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
117 | ||
118 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
119 | if (crtc->base.id == fb_helper->crtc_info[i].crtc_id) | |
120 | break; | |
121 | } | |
122 | ||
123 | mutex_lock(&dev->mode_config.mutex); | |
124 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); | |
125 | mutex_unlock(&dev->mode_config.mutex); | |
126 | ||
127 | /* Found a CRTC on this fb, now find encoders */ | |
128 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
129 | if (encoder->crtc == crtc) { | |
130 | struct drm_encoder_helper_funcs *encoder_funcs; | |
131 | ||
132 | encoder_funcs = encoder->helper_private; | |
133 | mutex_lock(&dev->mode_config.mutex); | |
134 | encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); | |
135 | mutex_unlock(&dev->mode_config.mutex); | |
136 | } | |
137 | } | |
138 | } | |
139 | } | |
140 | ||
141 | static void drm_fb_helper_off(struct fb_info *info, int dpms_mode) | |
142 | { | |
143 | struct drm_fb_helper *fb_helper = info->par; | |
144 | struct drm_device *dev = fb_helper->dev; | |
145 | struct drm_crtc *crtc; | |
146 | struct drm_encoder *encoder; | |
147 | int i; | |
148 | ||
149 | /* | |
150 | * For each CRTC in this fb, find all associated encoders | |
151 | * and turn them off, then turn off the CRTC. | |
152 | */ | |
153 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
154 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
155 | ||
156 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
157 | if (crtc->base.id == fb_helper->crtc_info[i].crtc_id) | |
158 | break; | |
159 | } | |
160 | ||
161 | /* Found a CRTC on this fb, now find encoders */ | |
162 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
163 | if (encoder->crtc == crtc) { | |
164 | struct drm_encoder_helper_funcs *encoder_funcs; | |
165 | ||
166 | encoder_funcs = encoder->helper_private; | |
167 | mutex_lock(&dev->mode_config.mutex); | |
168 | encoder_funcs->dpms(encoder, dpms_mode); | |
169 | mutex_unlock(&dev->mode_config.mutex); | |
170 | } | |
171 | } | |
172 | if (dpms_mode == DRM_MODE_DPMS_OFF) { | |
173 | mutex_lock(&dev->mode_config.mutex); | |
174 | crtc_funcs->dpms(crtc, dpms_mode); | |
175 | mutex_unlock(&dev->mode_config.mutex); | |
176 | } | |
177 | } | |
178 | } | |
179 | ||
180 | int drm_fb_helper_blank(int blank, struct fb_info *info) | |
181 | { | |
182 | switch (blank) { | |
183 | case FB_BLANK_UNBLANK: | |
184 | drm_fb_helper_on(info); | |
185 | break; | |
186 | case FB_BLANK_NORMAL: | |
187 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); | |
188 | break; | |
189 | case FB_BLANK_HSYNC_SUSPEND: | |
190 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); | |
191 | break; | |
192 | case FB_BLANK_VSYNC_SUSPEND: | |
193 | drm_fb_helper_off(info, DRM_MODE_DPMS_SUSPEND); | |
194 | break; | |
195 | case FB_BLANK_POWERDOWN: | |
196 | drm_fb_helper_off(info, DRM_MODE_DPMS_OFF); | |
197 | break; | |
198 | } | |
199 | return 0; | |
200 | } | |
201 | EXPORT_SYMBOL(drm_fb_helper_blank); | |
202 | ||
203 | static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) | |
204 | { | |
205 | int i; | |
206 | ||
207 | for (i = 0; i < helper->crtc_count; i++) | |
208 | kfree(helper->crtc_info[i].mode_set.connectors); | |
209 | kfree(helper->crtc_info); | |
210 | } | |
211 | ||
212 | int drm_fb_helper_init_crtc_count(struct drm_fb_helper *helper, int crtc_count, int max_conn_count) | |
213 | { | |
214 | struct drm_device *dev = helper->dev; | |
215 | struct drm_crtc *crtc; | |
216 | int ret = 0; | |
217 | int i; | |
218 | ||
219 | helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL); | |
220 | if (!helper->crtc_info) | |
221 | return -ENOMEM; | |
222 | ||
223 | helper->crtc_count = crtc_count; | |
224 | ||
225 | for (i = 0; i < crtc_count; i++) { | |
226 | helper->crtc_info[i].mode_set.connectors = | |
227 | kcalloc(max_conn_count, | |
228 | sizeof(struct drm_connector *), | |
229 | GFP_KERNEL); | |
230 | ||
231 | if (!helper->crtc_info[i].mode_set.connectors) { | |
232 | ret = -ENOMEM; | |
233 | goto out_free; | |
234 | } | |
235 | helper->crtc_info[i].mode_set.num_connectors = 0; | |
236 | } | |
237 | ||
238 | i = 0; | |
239 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
240 | helper->crtc_info[i].crtc_id = crtc->base.id; | |
241 | helper->crtc_info[i].mode_set.crtc = crtc; | |
242 | i++; | |
243 | } | |
244 | helper->conn_limit = max_conn_count; | |
245 | return 0; | |
246 | out_free: | |
247 | drm_fb_helper_crtc_free(helper); | |
248 | return -ENOMEM; | |
249 | } | |
250 | EXPORT_SYMBOL(drm_fb_helper_init_crtc_count); | |
251 | ||
252 | int drm_fb_helper_setcolreg(unsigned regno, | |
253 | unsigned red, | |
254 | unsigned green, | |
255 | unsigned blue, | |
256 | unsigned transp, | |
257 | struct fb_info *info) | |
258 | { | |
259 | struct drm_fb_helper *fb_helper = info->par; | |
260 | struct drm_device *dev = fb_helper->dev; | |
261 | struct drm_crtc *crtc; | |
262 | int i; | |
263 | ||
264 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
265 | struct drm_framebuffer *fb = fb_helper->fb; | |
266 | ||
267 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
268 | if (crtc->base.id == fb_helper->crtc_info[i].crtc_id) | |
269 | break; | |
270 | } | |
271 | if (i == fb_helper->crtc_count) | |
272 | continue; | |
273 | ||
274 | if (regno > 255) | |
275 | return 1; | |
276 | ||
277 | if (fb->depth == 8) { | |
278 | fb_helper->funcs->gamma_set(crtc, red, green, blue, regno); | |
279 | return 0; | |
280 | } | |
281 | ||
282 | if (regno < 16) { | |
283 | switch (fb->depth) { | |
284 | case 15: | |
285 | fb->pseudo_palette[regno] = ((red & 0xf800) >> 1) | | |
286 | ((green & 0xf800) >> 6) | | |
287 | ((blue & 0xf800) >> 11); | |
288 | break; | |
289 | case 16: | |
290 | fb->pseudo_palette[regno] = (red & 0xf800) | | |
291 | ((green & 0xfc00) >> 5) | | |
292 | ((blue & 0xf800) >> 11); | |
293 | break; | |
294 | case 24: | |
295 | case 32: | |
296 | fb->pseudo_palette[regno] = | |
297 | (((red >> 8) & 0xff) << info->var.red.offset) | | |
298 | (((green >> 8) & 0xff) << info->var.green.offset) | | |
299 | (((blue >> 8) & 0xff) << info->var.blue.offset); | |
300 | break; | |
301 | } | |
302 | } | |
303 | } | |
304 | return 0; | |
305 | } | |
306 | EXPORT_SYMBOL(drm_fb_helper_setcolreg); | |
307 | ||
308 | int drm_fb_helper_check_var(struct fb_var_screeninfo *var, | |
309 | struct fb_info *info) | |
310 | { | |
311 | struct drm_fb_helper *fb_helper = info->par; | |
312 | struct drm_framebuffer *fb = fb_helper->fb; | |
313 | int depth; | |
314 | ||
315 | if (var->pixclock == -1 || !var->pixclock) | |
316 | return -EINVAL; | |
317 | ||
318 | /* Need to resize the fb object !!! */ | |
319 | if (var->xres > fb->width || var->yres > fb->height) { | |
320 | DRM_ERROR("Requested width/height is greater than current fb " | |
321 | "object %dx%d > %dx%d\n", var->xres, var->yres, | |
322 | fb->width, fb->height); | |
323 | DRM_ERROR("Need resizing code.\n"); | |
324 | return -EINVAL; | |
325 | } | |
326 | ||
327 | switch (var->bits_per_pixel) { | |
328 | case 16: | |
329 | depth = (var->green.length == 6) ? 16 : 15; | |
330 | break; | |
331 | case 32: | |
332 | depth = (var->transp.length > 0) ? 32 : 24; | |
333 | break; | |
334 | default: | |
335 | depth = var->bits_per_pixel; | |
336 | break; | |
337 | } | |
338 | ||
339 | switch (depth) { | |
340 | case 8: | |
341 | var->red.offset = 0; | |
342 | var->green.offset = 0; | |
343 | var->blue.offset = 0; | |
344 | var->red.length = 8; | |
345 | var->green.length = 8; | |
346 | var->blue.length = 8; | |
347 | var->transp.length = 0; | |
348 | var->transp.offset = 0; | |
349 | break; | |
350 | case 15: | |
351 | var->red.offset = 10; | |
352 | var->green.offset = 5; | |
353 | var->blue.offset = 0; | |
354 | var->red.length = 5; | |
355 | var->green.length = 5; | |
356 | var->blue.length = 5; | |
357 | var->transp.length = 1; | |
358 | var->transp.offset = 15; | |
359 | break; | |
360 | case 16: | |
361 | var->red.offset = 11; | |
362 | var->green.offset = 5; | |
363 | var->blue.offset = 0; | |
364 | var->red.length = 5; | |
365 | var->green.length = 6; | |
366 | var->blue.length = 5; | |
367 | var->transp.length = 0; | |
368 | var->transp.offset = 0; | |
369 | break; | |
370 | case 24: | |
371 | var->red.offset = 16; | |
372 | var->green.offset = 8; | |
373 | var->blue.offset = 0; | |
374 | var->red.length = 8; | |
375 | var->green.length = 8; | |
376 | var->blue.length = 8; | |
377 | var->transp.length = 0; | |
378 | var->transp.offset = 0; | |
379 | break; | |
380 | case 32: | |
381 | var->red.offset = 16; | |
382 | var->green.offset = 8; | |
383 | var->blue.offset = 0; | |
384 | var->red.length = 8; | |
385 | var->green.length = 8; | |
386 | var->blue.length = 8; | |
387 | var->transp.length = 8; | |
388 | var->transp.offset = 24; | |
389 | break; | |
390 | default: | |
391 | return -EINVAL; | |
392 | } | |
393 | return 0; | |
394 | } | |
395 | EXPORT_SYMBOL(drm_fb_helper_check_var); | |
396 | ||
397 | /* this will let fbcon do the mode init */ | |
398 | int drm_fb_helper_set_par(struct fb_info *info) | |
399 | { | |
400 | struct drm_fb_helper *fb_helper = info->par; | |
401 | struct drm_device *dev = fb_helper->dev; | |
402 | struct fb_var_screeninfo *var = &info->var; | |
403 | struct drm_crtc *crtc; | |
404 | int ret; | |
405 | int i; | |
406 | ||
407 | if (var->pixclock != -1) { | |
408 | DRM_ERROR("PIXEL CLCOK SET\n"); | |
409 | return -EINVAL; | |
410 | } | |
411 | ||
412 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
413 | ||
414 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
415 | if (crtc->base.id == fb_helper->crtc_info[i].crtc_id) | |
416 | break; | |
417 | } | |
418 | if (i == fb_helper->crtc_count) | |
419 | continue; | |
420 | ||
421 | if (crtc->fb == fb_helper->crtc_info[i].mode_set.fb) { | |
422 | mutex_lock(&dev->mode_config.mutex); | |
423 | ret = crtc->funcs->set_config(&fb_helper->crtc_info->mode_set); | |
424 | mutex_unlock(&dev->mode_config.mutex); | |
425 | if (ret) | |
426 | return ret; | |
427 | } | |
428 | } | |
429 | return 0; | |
430 | } | |
431 | EXPORT_SYMBOL(drm_fb_helper_set_par); | |
432 | ||
433 | int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, | |
434 | struct fb_info *info) | |
435 | { | |
436 | struct drm_fb_helper *fb_helper = info->par; | |
437 | struct drm_device *dev = fb_helper->dev; | |
438 | struct drm_mode_set *modeset; | |
439 | struct drm_crtc *crtc; | |
440 | int ret = 0; | |
441 | int i; | |
442 | ||
443 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
444 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
445 | if (crtc->base.id == fb_helper->crtc_info[i].crtc_id) | |
446 | break; | |
447 | } | |
448 | ||
449 | if (i == fb_helper->crtc_count) | |
450 | continue; | |
451 | ||
452 | modeset = &fb_helper->crtc_info[i].mode_set; | |
453 | ||
454 | modeset->x = var->xoffset; | |
455 | modeset->y = var->yoffset; | |
456 | ||
457 | if (modeset->num_connectors) { | |
458 | mutex_lock(&dev->mode_config.mutex); | |
459 | ret = crtc->funcs->set_config(modeset); | |
460 | mutex_unlock(&dev->mode_config.mutex); | |
461 | if (!ret) { | |
462 | info->var.xoffset = var->xoffset; | |
463 | info->var.yoffset = var->yoffset; | |
464 | } | |
465 | } | |
466 | } | |
467 | return ret; | |
468 | } | |
469 | EXPORT_SYMBOL(drm_fb_helper_pan_display); | |
470 | ||
471 | int drm_fb_helper_single_fb_probe(struct drm_device *dev, | |
472 | int (*fb_create)(struct drm_device *dev, | |
473 | uint32_t fb_width, | |
474 | uint32_t fb_height, | |
475 | uint32_t surface_width, | |
476 | uint32_t surface_height, | |
477 | struct drm_framebuffer **fb_ptr)) | |
478 | { | |
479 | struct drm_crtc *crtc; | |
480 | struct drm_connector *connector; | |
481 | unsigned int fb_width = (unsigned)-1, fb_height = (unsigned)-1; | |
482 | unsigned int surface_width = 0, surface_height = 0; | |
483 | int new_fb = 0; | |
484 | int crtc_count = 0; | |
485 | int ret, i, conn_count = 0; | |
486 | struct fb_info *info; | |
487 | struct drm_framebuffer *fb; | |
488 | struct drm_mode_set *modeset = NULL; | |
489 | struct drm_fb_helper *fb_helper; | |
490 | ||
491 | /* first up get a count of crtcs now in use and new min/maxes width/heights */ | |
492 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
493 | if (drm_helper_crtc_in_use(crtc)) { | |
494 | if (crtc->desired_mode) { | |
495 | if (crtc->desired_mode->hdisplay < fb_width) | |
496 | fb_width = crtc->desired_mode->hdisplay; | |
497 | ||
498 | if (crtc->desired_mode->vdisplay < fb_height) | |
499 | fb_height = crtc->desired_mode->vdisplay; | |
500 | ||
501 | if (crtc->desired_mode->hdisplay > surface_width) | |
502 | surface_width = crtc->desired_mode->hdisplay; | |
503 | ||
504 | if (crtc->desired_mode->vdisplay > surface_height) | |
505 | surface_height = crtc->desired_mode->vdisplay; | |
506 | } | |
507 | crtc_count++; | |
508 | } | |
509 | } | |
510 | ||
511 | if (crtc_count == 0 || fb_width == -1 || fb_height == -1) { | |
512 | /* hmm everyone went away - assume VGA cable just fell out | |
513 | and will come back later. */ | |
514 | return 0; | |
515 | } | |
516 | ||
517 | /* do we have an fb already? */ | |
518 | if (list_empty(&dev->mode_config.fb_kernel_list)) { | |
519 | ret = (*fb_create)(dev, fb_width, fb_height, surface_width, | |
520 | surface_height, &fb); | |
521 | if (ret) | |
522 | return -EINVAL; | |
523 | new_fb = 1; | |
524 | } else { | |
525 | fb = list_first_entry(&dev->mode_config.fb_kernel_list, | |
526 | struct drm_framebuffer, filp_head); | |
527 | ||
528 | /* if someone hotplugs something bigger than we have already allocated, we are pwned. | |
529 | As really we can't resize an fbdev that is in the wild currently due to fbdev | |
530 | not really being designed for the lower layers moving stuff around under it. | |
531 | - so in the grand style of things - punt. */ | |
532 | if ((fb->width < surface_width) || | |
533 | (fb->height < surface_height)) { | |
534 | DRM_ERROR("Framebuffer not large enough to scale console onto.\n"); | |
535 | return -EINVAL; | |
536 | } | |
537 | } | |
538 | ||
539 | info = fb->fbdev; | |
540 | fb_helper = info->par; | |
541 | ||
542 | crtc_count = 0; | |
543 | /* okay we need to setup new connector sets in the crtcs */ | |
544 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
545 | modeset = &fb_helper->crtc_info[crtc_count].mode_set; | |
546 | modeset->fb = fb; | |
547 | conn_count = 0; | |
548 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
549 | if (connector->encoder) | |
550 | if (connector->encoder->crtc == modeset->crtc) { | |
551 | modeset->connectors[conn_count] = connector; | |
552 | conn_count++; | |
553 | if (conn_count > fb_helper->conn_limit) | |
554 | BUG(); | |
555 | } | |
556 | } | |
557 | ||
558 | for (i = conn_count; i < fb_helper->conn_limit; i++) | |
559 | modeset->connectors[i] = NULL; | |
560 | ||
561 | modeset->crtc = crtc; | |
562 | crtc_count++; | |
563 | ||
564 | modeset->num_connectors = conn_count; | |
565 | if (modeset->crtc->desired_mode) { | |
566 | if (modeset->mode) | |
567 | drm_mode_destroy(dev, modeset->mode); | |
568 | modeset->mode = drm_mode_duplicate(dev, | |
569 | modeset->crtc->desired_mode); | |
570 | } | |
571 | } | |
572 | fb_helper->crtc_count = crtc_count; | |
573 | fb_helper->fb = fb; | |
574 | ||
575 | if (new_fb) { | |
576 | info->var.pixclock = -1; | |
577 | if (register_framebuffer(info) < 0) | |
578 | return -EINVAL; | |
579 | } else { | |
580 | drm_fb_helper_set_par(info); | |
581 | } | |
582 | printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, | |
583 | info->fix.id); | |
584 | ||
585 | /* Switch back to kernel console on panic */ | |
586 | /* multi card linked list maybe */ | |
587 | if (list_empty(&kernel_fb_helper_list)) { | |
588 | printk(KERN_INFO "registered panic notifier\n"); | |
589 | atomic_notifier_chain_register(&panic_notifier_list, | |
590 | &paniced); | |
591 | register_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
592 | } | |
593 | list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list); | |
594 | return 0; | |
595 | } | |
596 | EXPORT_SYMBOL(drm_fb_helper_single_fb_probe); | |
597 | ||
598 | void drm_fb_helper_free(struct drm_fb_helper *helper) | |
599 | { | |
600 | list_del(&helper->kernel_fb_list); | |
601 | if (list_empty(&kernel_fb_helper_list)) { | |
602 | printk(KERN_INFO "unregistered panic notifier\n"); | |
603 | atomic_notifier_chain_unregister(&panic_notifier_list, | |
604 | &paniced); | |
605 | unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
606 | } | |
607 | drm_fb_helper_crtc_free(helper); | |
608 | } | |
609 | EXPORT_SYMBOL(drm_fb_helper_free); | |
610 | ||
611 | void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch) | |
612 | { | |
613 | info->fix.type = FB_TYPE_PACKED_PIXELS; | |
614 | info->fix.visual = FB_VISUAL_TRUECOLOR; | |
615 | info->fix.type_aux = 0; | |
616 | info->fix.xpanstep = 1; /* doing it in hw */ | |
617 | info->fix.ypanstep = 1; /* doing it in hw */ | |
618 | info->fix.ywrapstep = 0; | |
3420e742 | 619 | info->fix.accel = FB_ACCEL_NONE; |
785b93ef DA |
620 | info->fix.type_aux = 0; |
621 | ||
622 | info->fix.line_length = pitch; | |
623 | return; | |
624 | } | |
625 | EXPORT_SYMBOL(drm_fb_helper_fill_fix); | |
626 | ||
627 | void drm_fb_helper_fill_var(struct fb_info *info, struct drm_framebuffer *fb, | |
628 | uint32_t fb_width, uint32_t fb_height) | |
629 | { | |
630 | info->pseudo_palette = fb->pseudo_palette; | |
631 | info->var.xres_virtual = fb->width; | |
632 | info->var.yres_virtual = fb->height; | |
633 | info->var.bits_per_pixel = fb->bits_per_pixel; | |
634 | info->var.xoffset = 0; | |
635 | info->var.yoffset = 0; | |
636 | info->var.activate = FB_ACTIVATE_NOW; | |
637 | info->var.height = -1; | |
638 | info->var.width = -1; | |
639 | ||
640 | switch (fb->depth) { | |
641 | case 8: | |
642 | info->var.red.offset = 0; | |
643 | info->var.green.offset = 0; | |
644 | info->var.blue.offset = 0; | |
645 | info->var.red.length = 8; /* 8bit DAC */ | |
646 | info->var.green.length = 8; | |
647 | info->var.blue.length = 8; | |
648 | info->var.transp.offset = 0; | |
649 | info->var.transp.length = 0; | |
650 | break; | |
651 | case 15: | |
652 | info->var.red.offset = 10; | |
653 | info->var.green.offset = 5; | |
654 | info->var.blue.offset = 0; | |
655 | info->var.red.length = 5; | |
656 | info->var.green.length = 5; | |
657 | info->var.blue.length = 5; | |
658 | info->var.transp.offset = 15; | |
659 | info->var.transp.length = 1; | |
660 | break; | |
661 | case 16: | |
662 | info->var.red.offset = 11; | |
663 | info->var.green.offset = 5; | |
664 | info->var.blue.offset = 0; | |
665 | info->var.red.length = 5; | |
666 | info->var.green.length = 6; | |
667 | info->var.blue.length = 5; | |
668 | info->var.transp.offset = 0; | |
669 | break; | |
670 | case 24: | |
671 | info->var.red.offset = 16; | |
672 | info->var.green.offset = 8; | |
673 | info->var.blue.offset = 0; | |
674 | info->var.red.length = 8; | |
675 | info->var.green.length = 8; | |
676 | info->var.blue.length = 8; | |
677 | info->var.transp.offset = 0; | |
678 | info->var.transp.length = 0; | |
679 | break; | |
680 | case 32: | |
681 | info->var.red.offset = 16; | |
682 | info->var.green.offset = 8; | |
683 | info->var.blue.offset = 0; | |
684 | info->var.red.length = 8; | |
685 | info->var.green.length = 8; | |
686 | info->var.blue.length = 8; | |
687 | info->var.transp.offset = 24; | |
688 | info->var.transp.length = 8; | |
689 | break; | |
690 | default: | |
691 | break; | |
692 | } | |
693 | ||
694 | info->var.xres = fb_width; | |
695 | info->var.yres = fb_height; | |
696 | } | |
697 | EXPORT_SYMBOL(drm_fb_helper_fill_var); |