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785b93ef DA |
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 | ||
6fcefd56 DA |
37 | MODULE_AUTHOR("David Airlie, Jesse Barnes"); |
38 | MODULE_DESCRIPTION("DRM KMS helper"); | |
39 | MODULE_LICENSE("GPL and additional rights"); | |
40 | ||
785b93ef DA |
41 | static LIST_HEAD(kernel_fb_helper_list); |
42 | ||
43 | bool drm_fb_helper_force_kernel_mode(void) | |
44 | { | |
45 | int i = 0; | |
46 | bool ret, error = false; | |
47 | struct drm_fb_helper *helper; | |
48 | ||
49 | if (list_empty(&kernel_fb_helper_list)) | |
50 | return false; | |
51 | ||
52 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { | |
53 | for (i = 0; i < helper->crtc_count; i++) { | |
54 | struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set; | |
55 | ret = drm_crtc_helper_set_config(mode_set); | |
56 | if (ret) | |
57 | error = true; | |
58 | } | |
59 | } | |
60 | return error; | |
61 | } | |
62 | ||
63 | int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed, | |
64 | void *panic_str) | |
65 | { | |
66 | DRM_ERROR("panic occurred, switching back to text console\n"); | |
67 | return drm_fb_helper_force_kernel_mode(); | |
68 | return 0; | |
69 | } | |
70 | EXPORT_SYMBOL(drm_fb_helper_panic); | |
71 | ||
72 | static struct notifier_block paniced = { | |
73 | .notifier_call = drm_fb_helper_panic, | |
74 | }; | |
75 | ||
76 | /** | |
77 | * drm_fb_helper_restore - restore the framebuffer console (kernel) config | |
78 | * | |
79 | * Restore's the kernel's fbcon mode, used for lastclose & panic paths. | |
80 | */ | |
81 | void drm_fb_helper_restore(void) | |
82 | { | |
83 | bool ret; | |
84 | ret = drm_fb_helper_force_kernel_mode(); | |
85 | if (ret == true) | |
86 | DRM_ERROR("Failed to restore crtc configuration\n"); | |
87 | } | |
88 | EXPORT_SYMBOL(drm_fb_helper_restore); | |
89 | ||
90 | static void drm_fb_helper_restore_work_fn(struct work_struct *ignored) | |
91 | { | |
92 | drm_fb_helper_restore(); | |
93 | } | |
94 | static DECLARE_WORK(drm_fb_helper_restore_work, drm_fb_helper_restore_work_fn); | |
95 | ||
96 | static void drm_fb_helper_sysrq(int dummy1, struct tty_struct *dummy3) | |
97 | { | |
98 | schedule_work(&drm_fb_helper_restore_work); | |
99 | } | |
100 | ||
101 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { | |
102 | .handler = drm_fb_helper_sysrq, | |
103 | .help_msg = "force-fb(V)", | |
104 | .action_msg = "Restore framebuffer console", | |
105 | }; | |
106 | ||
107 | static void drm_fb_helper_on(struct fb_info *info) | |
108 | { | |
109 | struct drm_fb_helper *fb_helper = info->par; | |
110 | struct drm_device *dev = fb_helper->dev; | |
111 | struct drm_crtc *crtc; | |
112 | struct drm_encoder *encoder; | |
113 | int i; | |
114 | ||
115 | /* | |
116 | * For each CRTC in this fb, turn the crtc on then, | |
117 | * find all associated encoders and turn them on. | |
118 | */ | |
119 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
120 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
121 | ||
122 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
123 | if (crtc->base.id == fb_helper->crtc_info[i].crtc_id) | |
124 | break; | |
125 | } | |
126 | ||
127 | mutex_lock(&dev->mode_config.mutex); | |
128 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); | |
129 | mutex_unlock(&dev->mode_config.mutex); | |
130 | ||
131 | /* Found a CRTC on this fb, now find encoders */ | |
132 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
133 | if (encoder->crtc == crtc) { | |
134 | struct drm_encoder_helper_funcs *encoder_funcs; | |
135 | ||
136 | encoder_funcs = encoder->helper_private; | |
137 | mutex_lock(&dev->mode_config.mutex); | |
138 | encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); | |
139 | mutex_unlock(&dev->mode_config.mutex); | |
140 | } | |
141 | } | |
142 | } | |
143 | } | |
144 | ||
145 | static void drm_fb_helper_off(struct fb_info *info, int dpms_mode) | |
146 | { | |
147 | struct drm_fb_helper *fb_helper = info->par; | |
148 | struct drm_device *dev = fb_helper->dev; | |
149 | struct drm_crtc *crtc; | |
150 | struct drm_encoder *encoder; | |
151 | int i; | |
152 | ||
153 | /* | |
154 | * For each CRTC in this fb, find all associated encoders | |
155 | * and turn them off, then turn off the CRTC. | |
156 | */ | |
157 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
158 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
159 | ||
160 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
161 | if (crtc->base.id == fb_helper->crtc_info[i].crtc_id) | |
162 | break; | |
163 | } | |
164 | ||
165 | /* Found a CRTC on this fb, now find encoders */ | |
166 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
167 | if (encoder->crtc == crtc) { | |
168 | struct drm_encoder_helper_funcs *encoder_funcs; | |
169 | ||
170 | encoder_funcs = encoder->helper_private; | |
171 | mutex_lock(&dev->mode_config.mutex); | |
172 | encoder_funcs->dpms(encoder, dpms_mode); | |
173 | mutex_unlock(&dev->mode_config.mutex); | |
174 | } | |
175 | } | |
176 | if (dpms_mode == DRM_MODE_DPMS_OFF) { | |
177 | mutex_lock(&dev->mode_config.mutex); | |
178 | crtc_funcs->dpms(crtc, dpms_mode); | |
179 | mutex_unlock(&dev->mode_config.mutex); | |
180 | } | |
181 | } | |
182 | } | |
183 | ||
184 | int drm_fb_helper_blank(int blank, struct fb_info *info) | |
185 | { | |
186 | switch (blank) { | |
187 | case FB_BLANK_UNBLANK: | |
188 | drm_fb_helper_on(info); | |
189 | break; | |
190 | case FB_BLANK_NORMAL: | |
191 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); | |
192 | break; | |
193 | case FB_BLANK_HSYNC_SUSPEND: | |
194 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); | |
195 | break; | |
196 | case FB_BLANK_VSYNC_SUSPEND: | |
197 | drm_fb_helper_off(info, DRM_MODE_DPMS_SUSPEND); | |
198 | break; | |
199 | case FB_BLANK_POWERDOWN: | |
200 | drm_fb_helper_off(info, DRM_MODE_DPMS_OFF); | |
201 | break; | |
202 | } | |
203 | return 0; | |
204 | } | |
205 | EXPORT_SYMBOL(drm_fb_helper_blank); | |
206 | ||
207 | static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) | |
208 | { | |
209 | int i; | |
210 | ||
211 | for (i = 0; i < helper->crtc_count; i++) | |
212 | kfree(helper->crtc_info[i].mode_set.connectors); | |
213 | kfree(helper->crtc_info); | |
214 | } | |
215 | ||
216 | int drm_fb_helper_init_crtc_count(struct drm_fb_helper *helper, int crtc_count, int max_conn_count) | |
217 | { | |
218 | struct drm_device *dev = helper->dev; | |
219 | struct drm_crtc *crtc; | |
220 | int ret = 0; | |
221 | int i; | |
222 | ||
223 | helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL); | |
224 | if (!helper->crtc_info) | |
225 | return -ENOMEM; | |
226 | ||
227 | helper->crtc_count = crtc_count; | |
228 | ||
229 | for (i = 0; i < crtc_count; i++) { | |
230 | helper->crtc_info[i].mode_set.connectors = | |
231 | kcalloc(max_conn_count, | |
232 | sizeof(struct drm_connector *), | |
233 | GFP_KERNEL); | |
234 | ||
235 | if (!helper->crtc_info[i].mode_set.connectors) { | |
236 | ret = -ENOMEM; | |
237 | goto out_free; | |
238 | } | |
239 | helper->crtc_info[i].mode_set.num_connectors = 0; | |
240 | } | |
241 | ||
242 | i = 0; | |
243 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
244 | helper->crtc_info[i].crtc_id = crtc->base.id; | |
245 | helper->crtc_info[i].mode_set.crtc = crtc; | |
246 | i++; | |
247 | } | |
248 | helper->conn_limit = max_conn_count; | |
249 | return 0; | |
250 | out_free: | |
251 | drm_fb_helper_crtc_free(helper); | |
252 | return -ENOMEM; | |
253 | } | |
254 | EXPORT_SYMBOL(drm_fb_helper_init_crtc_count); | |
255 | ||
256 | int drm_fb_helper_setcolreg(unsigned regno, | |
257 | unsigned red, | |
258 | unsigned green, | |
259 | unsigned blue, | |
260 | unsigned transp, | |
261 | struct fb_info *info) | |
262 | { | |
263 | struct drm_fb_helper *fb_helper = info->par; | |
264 | struct drm_device *dev = fb_helper->dev; | |
265 | struct drm_crtc *crtc; | |
266 | int i; | |
267 | ||
268 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
269 | struct drm_framebuffer *fb = fb_helper->fb; | |
270 | ||
271 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
272 | if (crtc->base.id == fb_helper->crtc_info[i].crtc_id) | |
273 | break; | |
274 | } | |
275 | if (i == fb_helper->crtc_count) | |
276 | continue; | |
277 | ||
278 | if (regno > 255) | |
279 | return 1; | |
280 | ||
281 | if (fb->depth == 8) { | |
282 | fb_helper->funcs->gamma_set(crtc, red, green, blue, regno); | |
283 | return 0; | |
284 | } | |
285 | ||
286 | if (regno < 16) { | |
287 | switch (fb->depth) { | |
288 | case 15: | |
289 | fb->pseudo_palette[regno] = ((red & 0xf800) >> 1) | | |
290 | ((green & 0xf800) >> 6) | | |
291 | ((blue & 0xf800) >> 11); | |
292 | break; | |
293 | case 16: | |
294 | fb->pseudo_palette[regno] = (red & 0xf800) | | |
295 | ((green & 0xfc00) >> 5) | | |
296 | ((blue & 0xf800) >> 11); | |
297 | break; | |
298 | case 24: | |
299 | case 32: | |
300 | fb->pseudo_palette[regno] = | |
301 | (((red >> 8) & 0xff) << info->var.red.offset) | | |
302 | (((green >> 8) & 0xff) << info->var.green.offset) | | |
303 | (((blue >> 8) & 0xff) << info->var.blue.offset); | |
304 | break; | |
305 | } | |
306 | } | |
307 | } | |
308 | return 0; | |
309 | } | |
310 | EXPORT_SYMBOL(drm_fb_helper_setcolreg); | |
311 | ||
312 | int drm_fb_helper_check_var(struct fb_var_screeninfo *var, | |
313 | struct fb_info *info) | |
314 | { | |
315 | struct drm_fb_helper *fb_helper = info->par; | |
316 | struct drm_framebuffer *fb = fb_helper->fb; | |
317 | int depth; | |
318 | ||
319 | if (var->pixclock == -1 || !var->pixclock) | |
320 | return -EINVAL; | |
321 | ||
322 | /* Need to resize the fb object !!! */ | |
323 | if (var->xres > fb->width || var->yres > fb->height) { | |
324 | DRM_ERROR("Requested width/height is greater than current fb " | |
325 | "object %dx%d > %dx%d\n", var->xres, var->yres, | |
326 | fb->width, fb->height); | |
327 | DRM_ERROR("Need resizing code.\n"); | |
328 | return -EINVAL; | |
329 | } | |
330 | ||
331 | switch (var->bits_per_pixel) { | |
332 | case 16: | |
333 | depth = (var->green.length == 6) ? 16 : 15; | |
334 | break; | |
335 | case 32: | |
336 | depth = (var->transp.length > 0) ? 32 : 24; | |
337 | break; | |
338 | default: | |
339 | depth = var->bits_per_pixel; | |
340 | break; | |
341 | } | |
342 | ||
343 | switch (depth) { | |
344 | case 8: | |
345 | var->red.offset = 0; | |
346 | var->green.offset = 0; | |
347 | var->blue.offset = 0; | |
348 | var->red.length = 8; | |
349 | var->green.length = 8; | |
350 | var->blue.length = 8; | |
351 | var->transp.length = 0; | |
352 | var->transp.offset = 0; | |
353 | break; | |
354 | case 15: | |
355 | var->red.offset = 10; | |
356 | var->green.offset = 5; | |
357 | var->blue.offset = 0; | |
358 | var->red.length = 5; | |
359 | var->green.length = 5; | |
360 | var->blue.length = 5; | |
361 | var->transp.length = 1; | |
362 | var->transp.offset = 15; | |
363 | break; | |
364 | case 16: | |
365 | var->red.offset = 11; | |
366 | var->green.offset = 5; | |
367 | var->blue.offset = 0; | |
368 | var->red.length = 5; | |
369 | var->green.length = 6; | |
370 | var->blue.length = 5; | |
371 | var->transp.length = 0; | |
372 | var->transp.offset = 0; | |
373 | break; | |
374 | case 24: | |
375 | var->red.offset = 16; | |
376 | var->green.offset = 8; | |
377 | var->blue.offset = 0; | |
378 | var->red.length = 8; | |
379 | var->green.length = 8; | |
380 | var->blue.length = 8; | |
381 | var->transp.length = 0; | |
382 | var->transp.offset = 0; | |
383 | break; | |
384 | case 32: | |
385 | var->red.offset = 16; | |
386 | var->green.offset = 8; | |
387 | var->blue.offset = 0; | |
388 | var->red.length = 8; | |
389 | var->green.length = 8; | |
390 | var->blue.length = 8; | |
391 | var->transp.length = 8; | |
392 | var->transp.offset = 24; | |
393 | break; | |
394 | default: | |
395 | return -EINVAL; | |
396 | } | |
397 | return 0; | |
398 | } | |
399 | EXPORT_SYMBOL(drm_fb_helper_check_var); | |
400 | ||
401 | /* this will let fbcon do the mode init */ | |
402 | int drm_fb_helper_set_par(struct fb_info *info) | |
403 | { | |
404 | struct drm_fb_helper *fb_helper = info->par; | |
405 | struct drm_device *dev = fb_helper->dev; | |
406 | struct fb_var_screeninfo *var = &info->var; | |
407 | struct drm_crtc *crtc; | |
408 | int ret; | |
409 | int i; | |
410 | ||
411 | if (var->pixclock != -1) { | |
412 | DRM_ERROR("PIXEL CLCOK SET\n"); | |
413 | return -EINVAL; | |
414 | } | |
415 | ||
416 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
417 | ||
418 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
419 | if (crtc->base.id == fb_helper->crtc_info[i].crtc_id) | |
420 | break; | |
421 | } | |
422 | if (i == fb_helper->crtc_count) | |
423 | continue; | |
424 | ||
425 | if (crtc->fb == fb_helper->crtc_info[i].mode_set.fb) { | |
426 | mutex_lock(&dev->mode_config.mutex); | |
427 | ret = crtc->funcs->set_config(&fb_helper->crtc_info->mode_set); | |
428 | mutex_unlock(&dev->mode_config.mutex); | |
429 | if (ret) | |
430 | return ret; | |
431 | } | |
432 | } | |
433 | return 0; | |
434 | } | |
435 | EXPORT_SYMBOL(drm_fb_helper_set_par); | |
436 | ||
437 | int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, | |
438 | struct fb_info *info) | |
439 | { | |
440 | struct drm_fb_helper *fb_helper = info->par; | |
441 | struct drm_device *dev = fb_helper->dev; | |
442 | struct drm_mode_set *modeset; | |
443 | struct drm_crtc *crtc; | |
444 | int ret = 0; | |
445 | int i; | |
446 | ||
447 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
448 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
449 | if (crtc->base.id == fb_helper->crtc_info[i].crtc_id) | |
450 | break; | |
451 | } | |
452 | ||
453 | if (i == fb_helper->crtc_count) | |
454 | continue; | |
455 | ||
456 | modeset = &fb_helper->crtc_info[i].mode_set; | |
457 | ||
458 | modeset->x = var->xoffset; | |
459 | modeset->y = var->yoffset; | |
460 | ||
461 | if (modeset->num_connectors) { | |
462 | mutex_lock(&dev->mode_config.mutex); | |
463 | ret = crtc->funcs->set_config(modeset); | |
464 | mutex_unlock(&dev->mode_config.mutex); | |
465 | if (!ret) { | |
466 | info->var.xoffset = var->xoffset; | |
467 | info->var.yoffset = var->yoffset; | |
468 | } | |
469 | } | |
470 | } | |
471 | return ret; | |
472 | } | |
473 | EXPORT_SYMBOL(drm_fb_helper_pan_display); | |
474 | ||
475 | int drm_fb_helper_single_fb_probe(struct drm_device *dev, | |
476 | int (*fb_create)(struct drm_device *dev, | |
477 | uint32_t fb_width, | |
478 | uint32_t fb_height, | |
479 | uint32_t surface_width, | |
480 | uint32_t surface_height, | |
481 | struct drm_framebuffer **fb_ptr)) | |
482 | { | |
483 | struct drm_crtc *crtc; | |
484 | struct drm_connector *connector; | |
485 | unsigned int fb_width = (unsigned)-1, fb_height = (unsigned)-1; | |
486 | unsigned int surface_width = 0, surface_height = 0; | |
487 | int new_fb = 0; | |
488 | int crtc_count = 0; | |
489 | int ret, i, conn_count = 0; | |
490 | struct fb_info *info; | |
491 | struct drm_framebuffer *fb; | |
492 | struct drm_mode_set *modeset = NULL; | |
493 | struct drm_fb_helper *fb_helper; | |
494 | ||
495 | /* first up get a count of crtcs now in use and new min/maxes width/heights */ | |
496 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
497 | if (drm_helper_crtc_in_use(crtc)) { | |
498 | if (crtc->desired_mode) { | |
499 | if (crtc->desired_mode->hdisplay < fb_width) | |
500 | fb_width = crtc->desired_mode->hdisplay; | |
501 | ||
502 | if (crtc->desired_mode->vdisplay < fb_height) | |
503 | fb_height = crtc->desired_mode->vdisplay; | |
504 | ||
505 | if (crtc->desired_mode->hdisplay > surface_width) | |
506 | surface_width = crtc->desired_mode->hdisplay; | |
507 | ||
508 | if (crtc->desired_mode->vdisplay > surface_height) | |
509 | surface_height = crtc->desired_mode->vdisplay; | |
510 | } | |
511 | crtc_count++; | |
512 | } | |
513 | } | |
514 | ||
515 | if (crtc_count == 0 || fb_width == -1 || fb_height == -1) { | |
516 | /* hmm everyone went away - assume VGA cable just fell out | |
517 | and will come back later. */ | |
518 | return 0; | |
519 | } | |
520 | ||
521 | /* do we have an fb already? */ | |
522 | if (list_empty(&dev->mode_config.fb_kernel_list)) { | |
523 | ret = (*fb_create)(dev, fb_width, fb_height, surface_width, | |
524 | surface_height, &fb); | |
525 | if (ret) | |
526 | return -EINVAL; | |
527 | new_fb = 1; | |
528 | } else { | |
529 | fb = list_first_entry(&dev->mode_config.fb_kernel_list, | |
530 | struct drm_framebuffer, filp_head); | |
531 | ||
532 | /* if someone hotplugs something bigger than we have already allocated, we are pwned. | |
533 | As really we can't resize an fbdev that is in the wild currently due to fbdev | |
534 | not really being designed for the lower layers moving stuff around under it. | |
535 | - so in the grand style of things - punt. */ | |
536 | if ((fb->width < surface_width) || | |
537 | (fb->height < surface_height)) { | |
538 | DRM_ERROR("Framebuffer not large enough to scale console onto.\n"); | |
539 | return -EINVAL; | |
540 | } | |
541 | } | |
542 | ||
543 | info = fb->fbdev; | |
544 | fb_helper = info->par; | |
545 | ||
546 | crtc_count = 0; | |
547 | /* okay we need to setup new connector sets in the crtcs */ | |
548 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
549 | modeset = &fb_helper->crtc_info[crtc_count].mode_set; | |
550 | modeset->fb = fb; | |
551 | conn_count = 0; | |
552 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
553 | if (connector->encoder) | |
554 | if (connector->encoder->crtc == modeset->crtc) { | |
555 | modeset->connectors[conn_count] = connector; | |
556 | conn_count++; | |
557 | if (conn_count > fb_helper->conn_limit) | |
558 | BUG(); | |
559 | } | |
560 | } | |
561 | ||
562 | for (i = conn_count; i < fb_helper->conn_limit; i++) | |
563 | modeset->connectors[i] = NULL; | |
564 | ||
565 | modeset->crtc = crtc; | |
566 | crtc_count++; | |
567 | ||
568 | modeset->num_connectors = conn_count; | |
569 | if (modeset->crtc->desired_mode) { | |
570 | if (modeset->mode) | |
571 | drm_mode_destroy(dev, modeset->mode); | |
572 | modeset->mode = drm_mode_duplicate(dev, | |
573 | modeset->crtc->desired_mode); | |
574 | } | |
575 | } | |
576 | fb_helper->crtc_count = crtc_count; | |
577 | fb_helper->fb = fb; | |
578 | ||
579 | if (new_fb) { | |
580 | info->var.pixclock = -1; | |
581 | if (register_framebuffer(info) < 0) | |
582 | return -EINVAL; | |
583 | } else { | |
584 | drm_fb_helper_set_par(info); | |
585 | } | |
586 | printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, | |
587 | info->fix.id); | |
588 | ||
589 | /* Switch back to kernel console on panic */ | |
590 | /* multi card linked list maybe */ | |
591 | if (list_empty(&kernel_fb_helper_list)) { | |
592 | printk(KERN_INFO "registered panic notifier\n"); | |
593 | atomic_notifier_chain_register(&panic_notifier_list, | |
594 | &paniced); | |
595 | register_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
596 | } | |
597 | list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list); | |
598 | return 0; | |
599 | } | |
600 | EXPORT_SYMBOL(drm_fb_helper_single_fb_probe); | |
601 | ||
602 | void drm_fb_helper_free(struct drm_fb_helper *helper) | |
603 | { | |
604 | list_del(&helper->kernel_fb_list); | |
605 | if (list_empty(&kernel_fb_helper_list)) { | |
606 | printk(KERN_INFO "unregistered panic notifier\n"); | |
607 | atomic_notifier_chain_unregister(&panic_notifier_list, | |
608 | &paniced); | |
609 | unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
610 | } | |
611 | drm_fb_helper_crtc_free(helper); | |
612 | } | |
613 | EXPORT_SYMBOL(drm_fb_helper_free); | |
614 | ||
615 | void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch) | |
616 | { | |
617 | info->fix.type = FB_TYPE_PACKED_PIXELS; | |
618 | info->fix.visual = FB_VISUAL_TRUECOLOR; | |
619 | info->fix.type_aux = 0; | |
620 | info->fix.xpanstep = 1; /* doing it in hw */ | |
621 | info->fix.ypanstep = 1; /* doing it in hw */ | |
622 | info->fix.ywrapstep = 0; | |
3420e742 | 623 | info->fix.accel = FB_ACCEL_NONE; |
785b93ef DA |
624 | info->fix.type_aux = 0; |
625 | ||
626 | info->fix.line_length = pitch; | |
627 | return; | |
628 | } | |
629 | EXPORT_SYMBOL(drm_fb_helper_fill_fix); | |
630 | ||
631 | void drm_fb_helper_fill_var(struct fb_info *info, struct drm_framebuffer *fb, | |
632 | uint32_t fb_width, uint32_t fb_height) | |
633 | { | |
634 | info->pseudo_palette = fb->pseudo_palette; | |
635 | info->var.xres_virtual = fb->width; | |
636 | info->var.yres_virtual = fb->height; | |
637 | info->var.bits_per_pixel = fb->bits_per_pixel; | |
638 | info->var.xoffset = 0; | |
639 | info->var.yoffset = 0; | |
640 | info->var.activate = FB_ACTIVATE_NOW; | |
641 | info->var.height = -1; | |
642 | info->var.width = -1; | |
643 | ||
644 | switch (fb->depth) { | |
645 | case 8: | |
646 | info->var.red.offset = 0; | |
647 | info->var.green.offset = 0; | |
648 | info->var.blue.offset = 0; | |
649 | info->var.red.length = 8; /* 8bit DAC */ | |
650 | info->var.green.length = 8; | |
651 | info->var.blue.length = 8; | |
652 | info->var.transp.offset = 0; | |
653 | info->var.transp.length = 0; | |
654 | break; | |
655 | case 15: | |
656 | info->var.red.offset = 10; | |
657 | info->var.green.offset = 5; | |
658 | info->var.blue.offset = 0; | |
659 | info->var.red.length = 5; | |
660 | info->var.green.length = 5; | |
661 | info->var.blue.length = 5; | |
662 | info->var.transp.offset = 15; | |
663 | info->var.transp.length = 1; | |
664 | break; | |
665 | case 16: | |
666 | info->var.red.offset = 11; | |
667 | info->var.green.offset = 5; | |
668 | info->var.blue.offset = 0; | |
669 | info->var.red.length = 5; | |
670 | info->var.green.length = 6; | |
671 | info->var.blue.length = 5; | |
672 | info->var.transp.offset = 0; | |
673 | break; | |
674 | case 24: | |
675 | info->var.red.offset = 16; | |
676 | info->var.green.offset = 8; | |
677 | info->var.blue.offset = 0; | |
678 | info->var.red.length = 8; | |
679 | info->var.green.length = 8; | |
680 | info->var.blue.length = 8; | |
681 | info->var.transp.offset = 0; | |
682 | info->var.transp.length = 0; | |
683 | break; | |
684 | case 32: | |
685 | info->var.red.offset = 16; | |
686 | info->var.green.offset = 8; | |
687 | info->var.blue.offset = 0; | |
688 | info->var.red.length = 8; | |
689 | info->var.green.length = 8; | |
690 | info->var.blue.length = 8; | |
691 | info->var.transp.offset = 24; | |
692 | info->var.transp.length = 8; | |
693 | break; | |
694 | default: | |
695 | break; | |
696 | } | |
697 | ||
698 | info->var.xres = fb_width; | |
699 | info->var.yres = fb_height; | |
700 | } | |
701 | EXPORT_SYMBOL(drm_fb_helper_fill_var); |