Rev 1404 | Rev 1430 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
1179 | serge | 1 | /* |
2 | * Copyright (c) 2006-2009 Red Hat Inc. |
||
3 | * Copyright (c) 2006-2008 Intel Corporation |
||
4 | * Copyright (c) 2007 Dave Airlie |
||
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 |
||
28 | * Jesse Barnes |
||
29 | */ |
||
30 | //#include |
||
31 | #include |
||
32 | #include "drmP.h" |
||
33 | #include "drm_crtc.h" |
||
34 | #include "drm_fb_helper.h" |
||
35 | #include "drm_crtc_helper.h" |
||
36 | |||
37 | //MODULE_AUTHOR("David Airlie, Jesse Barnes"); |
||
38 | //MODULE_DESCRIPTION("DRM KMS helper"); |
||
39 | //MODULE_LICENSE("GPL and additional rights"); |
||
40 | |||
41 | static LIST_HEAD(kernel_fb_helper_list); |
||
42 | |||
1221 | serge | 43 | int drm_fb_helper_add_connector(struct drm_connector *connector) |
44 | { |
||
45 | connector->fb_helper_private = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL); |
||
46 | if (!connector->fb_helper_private) |
||
47 | return -ENOMEM; |
||
48 | |||
49 | return 0; |
||
50 | } |
||
51 | EXPORT_SYMBOL(drm_fb_helper_add_connector); |
||
52 | |||
1179 | serge | 53 | bool drm_fb_helper_force_kernel_mode(void) |
54 | { |
||
55 | int i = 0; |
||
56 | bool ret, error = false; |
||
57 | struct drm_fb_helper *helper; |
||
58 | |||
59 | if (list_empty(&kernel_fb_helper_list)) |
||
60 | return false; |
||
61 | |||
62 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { |
||
63 | for (i = 0; i < helper->crtc_count; i++) { |
||
64 | struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set; |
||
65 | ret = drm_crtc_helper_set_config(mode_set); |
||
66 | if (ret) |
||
67 | error = true; |
||
68 | } |
||
69 | } |
||
70 | return error; |
||
71 | } |
||
72 | |||
73 | /** |
||
74 | * drm_fb_helper_restore - restore the framebuffer console (kernel) config |
||
75 | * |
||
76 | * Restore's the kernel's fbcon mode, used for lastclose & panic paths. |
||
77 | */ |
||
78 | void drm_fb_helper_restore(void) |
||
79 | { |
||
80 | bool ret; |
||
81 | ret = drm_fb_helper_force_kernel_mode(); |
||
82 | if (ret == true) |
||
83 | DRM_ERROR("Failed to restore crtc configuration\n"); |
||
84 | } |
||
85 | EXPORT_SYMBOL(drm_fb_helper_restore); |
||
86 | |||
87 | |||
88 | static void drm_fb_helper_on(struct fb_info *info) |
||
89 | { |
||
90 | struct drm_fb_helper *fb_helper = info->par; |
||
91 | struct drm_device *dev = fb_helper->dev; |
||
92 | struct drm_crtc *crtc; |
||
93 | struct drm_encoder *encoder; |
||
94 | int i; |
||
95 | |||
96 | /* |
||
97 | * For each CRTC in this fb, turn the crtc on then, |
||
98 | * find all associated encoders and turn them on. |
||
99 | */ |
||
100 | for (i = 0; i < fb_helper->crtc_count; i++) { |
||
101 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
||
102 | struct drm_crtc_helper_funcs *crtc_funcs = |
||
103 | crtc->helper_private; |
||
104 | |||
105 | /* Only mess with CRTCs in this fb */ |
||
106 | if (crtc->base.id != fb_helper->crtc_info[i].crtc_id || |
||
107 | !crtc->enabled) |
||
108 | continue; |
||
109 | |||
110 | mutex_lock(&dev->mode_config.mutex); |
||
111 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); |
||
112 | mutex_unlock(&dev->mode_config.mutex); |
||
113 | |||
114 | /* Found a CRTC on this fb, now find encoders */ |
||
115 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
116 | if (encoder->crtc == crtc) { |
||
117 | struct drm_encoder_helper_funcs *encoder_funcs; |
||
118 | |||
119 | encoder_funcs = encoder->helper_private; |
||
120 | mutex_lock(&dev->mode_config.mutex); |
||
121 | encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); |
||
122 | mutex_unlock(&dev->mode_config.mutex); |
||
123 | } |
||
124 | } |
||
125 | } |
||
126 | } |
||
127 | } |
||
128 | |||
129 | static void drm_fb_helper_off(struct fb_info *info, int dpms_mode) |
||
130 | { |
||
131 | struct drm_fb_helper *fb_helper = info->par; |
||
132 | struct drm_device *dev = fb_helper->dev; |
||
133 | struct drm_crtc *crtc; |
||
134 | struct drm_encoder *encoder; |
||
135 | int i; |
||
136 | |||
137 | /* |
||
138 | * For each CRTC in this fb, find all associated encoders |
||
139 | * and turn them off, then turn off the CRTC. |
||
140 | */ |
||
141 | for (i = 0; i < fb_helper->crtc_count; i++) { |
||
142 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
||
143 | struct drm_crtc_helper_funcs *crtc_funcs = |
||
144 | crtc->helper_private; |
||
145 | |||
146 | /* Only mess with CRTCs in this fb */ |
||
147 | if (crtc->base.id != fb_helper->crtc_info[i].crtc_id || |
||
148 | !crtc->enabled) |
||
149 | continue; |
||
150 | |||
151 | /* Found a CRTC on this fb, now find encoders */ |
||
152 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
153 | if (encoder->crtc == crtc) { |
||
154 | struct drm_encoder_helper_funcs *encoder_funcs; |
||
155 | |||
156 | encoder_funcs = encoder->helper_private; |
||
157 | mutex_lock(&dev->mode_config.mutex); |
||
158 | encoder_funcs->dpms(encoder, dpms_mode); |
||
159 | mutex_unlock(&dev->mode_config.mutex); |
||
160 | } |
||
161 | } |
||
162 | mutex_lock(&dev->mode_config.mutex); |
||
1321 | serge | 163 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF); |
1179 | serge | 164 | mutex_unlock(&dev->mode_config.mutex); |
165 | } |
||
166 | } |
||
167 | } |
||
168 | |||
169 | int drm_fb_helper_blank(int blank, struct fb_info *info) |
||
170 | { |
||
171 | switch (blank) { |
||
1321 | serge | 172 | /* Display: On; HSync: On, VSync: On */ |
1179 | serge | 173 | case FB_BLANK_UNBLANK: |
174 | drm_fb_helper_on(info); |
||
175 | break; |
||
1321 | serge | 176 | /* Display: Off; HSync: On, VSync: On */ |
1179 | serge | 177 | case FB_BLANK_NORMAL: |
1404 | serge | 178 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); |
1179 | serge | 179 | break; |
1321 | serge | 180 | /* Display: Off; HSync: Off, VSync: On */ |
1179 | serge | 181 | case FB_BLANK_HSYNC_SUSPEND: |
182 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); |
||
183 | break; |
||
1321 | serge | 184 | /* Display: Off; HSync: On, VSync: Off */ |
1179 | serge | 185 | case FB_BLANK_VSYNC_SUSPEND: |
186 | drm_fb_helper_off(info, DRM_MODE_DPMS_SUSPEND); |
||
187 | break; |
||
1321 | serge | 188 | /* Display: Off; HSync: Off, VSync: Off */ |
1179 | serge | 189 | case FB_BLANK_POWERDOWN: |
190 | drm_fb_helper_off(info, DRM_MODE_DPMS_OFF); |
||
191 | break; |
||
192 | } |
||
193 | return 0; |
||
194 | } |
||
195 | EXPORT_SYMBOL(drm_fb_helper_blank); |
||
196 | |||
197 | static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) |
||
198 | { |
||
199 | int i; |
||
200 | |||
201 | for (i = 0; i < helper->crtc_count; i++) |
||
202 | kfree(helper->crtc_info[i].mode_set.connectors); |
||
203 | kfree(helper->crtc_info); |
||
204 | } |
||
205 | |||
206 | int drm_fb_helper_init_crtc_count(struct drm_fb_helper *helper, int crtc_count, int max_conn_count) |
||
207 | { |
||
208 | struct drm_device *dev = helper->dev; |
||
209 | struct drm_crtc *crtc; |
||
210 | int ret = 0; |
||
211 | int i; |
||
212 | |||
213 | helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL); |
||
214 | if (!helper->crtc_info) |
||
215 | return -ENOMEM; |
||
216 | |||
217 | helper->crtc_count = crtc_count; |
||
218 | |||
219 | for (i = 0; i < crtc_count; i++) { |
||
220 | helper->crtc_info[i].mode_set.connectors = |
||
221 | kcalloc(max_conn_count, |
||
222 | sizeof(struct drm_connector *), |
||
223 | GFP_KERNEL); |
||
224 | |||
225 | if (!helper->crtc_info[i].mode_set.connectors) { |
||
226 | ret = -ENOMEM; |
||
227 | goto out_free; |
||
228 | } |
||
229 | helper->crtc_info[i].mode_set.num_connectors = 0; |
||
230 | } |
||
231 | |||
232 | i = 0; |
||
233 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
||
234 | helper->crtc_info[i].crtc_id = crtc->base.id; |
||
235 | helper->crtc_info[i].mode_set.crtc = crtc; |
||
236 | i++; |
||
237 | } |
||
238 | helper->conn_limit = max_conn_count; |
||
239 | return 0; |
||
240 | out_free: |
||
241 | drm_fb_helper_crtc_free(helper); |
||
242 | return -ENOMEM; |
||
243 | } |
||
244 | EXPORT_SYMBOL(drm_fb_helper_init_crtc_count); |
||
245 | |||
1246 | serge | 246 | static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, |
1221 | serge | 247 | u16 blue, u16 regno, struct fb_info *info) |
248 | { |
||
249 | struct drm_fb_helper *fb_helper = info->par; |
||
250 | struct drm_framebuffer *fb = fb_helper->fb; |
||
251 | int pindex; |
||
252 | |||
1246 | serge | 253 | if (info->fix.visual == FB_VISUAL_TRUECOLOR) { |
254 | u32 *palette; |
||
255 | u32 value; |
||
256 | /* place color in psuedopalette */ |
||
257 | if (regno > 16) |
||
258 | return -EINVAL; |
||
259 | palette = (u32 *)info->pseudo_palette; |
||
260 | red >>= (16 - info->var.red.length); |
||
261 | green >>= (16 - info->var.green.length); |
||
262 | blue >>= (16 - info->var.blue.length); |
||
263 | value = (red << info->var.red.offset) | |
||
264 | (green << info->var.green.offset) | |
||
265 | (blue << info->var.blue.offset); |
||
266 | palette[regno] = value; |
||
267 | return 0; |
||
268 | } |
||
269 | |||
1221 | serge | 270 | pindex = regno; |
271 | |||
272 | if (fb->bits_per_pixel == 16) { |
||
273 | pindex = regno << 3; |
||
274 | |||
275 | if (fb->depth == 16 && regno > 63) |
||
1246 | serge | 276 | return -EINVAL; |
1221 | serge | 277 | if (fb->depth == 15 && regno > 31) |
1246 | serge | 278 | return -EINVAL; |
1221 | serge | 279 | |
280 | if (fb->depth == 16) { |
||
281 | u16 r, g, b; |
||
282 | int i; |
||
283 | if (regno < 32) { |
||
284 | for (i = 0; i < 8; i++) |
||
285 | fb_helper->funcs->gamma_set(crtc, red, |
||
286 | green, blue, pindex + i); |
||
287 | } |
||
288 | |||
289 | fb_helper->funcs->gamma_get(crtc, &r, |
||
290 | &g, &b, |
||
291 | pindex >> 1); |
||
292 | |||
293 | for (i = 0; i < 4; i++) |
||
294 | fb_helper->funcs->gamma_set(crtc, r, |
||
295 | green, b, |
||
296 | (pindex >> 1) + i); |
||
297 | } |
||
298 | } |
||
299 | |||
300 | if (fb->depth != 16) |
||
301 | fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex); |
||
1246 | serge | 302 | return 0; |
1221 | serge | 303 | } |
304 | |||
305 | int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) |
||
306 | { |
||
307 | struct drm_fb_helper *fb_helper = info->par; |
||
308 | struct drm_device *dev = fb_helper->dev; |
||
309 | u16 *red, *green, *blue, *transp; |
||
310 | struct drm_crtc *crtc; |
||
311 | int i, rc = 0; |
||
312 | int start; |
||
313 | |||
314 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
||
315 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
||
316 | for (i = 0; i < fb_helper->crtc_count; i++) { |
||
317 | if (crtc->base.id == fb_helper->crtc_info[i].crtc_id) |
||
318 | break; |
||
319 | } |
||
320 | if (i == fb_helper->crtc_count) |
||
321 | continue; |
||
322 | |||
323 | red = cmap->red; |
||
324 | green = cmap->green; |
||
325 | blue = cmap->blue; |
||
326 | transp = cmap->transp; |
||
327 | start = cmap->start; |
||
328 | |||
329 | for (i = 0; i < cmap->len; i++) { |
||
330 | u16 hred, hgreen, hblue, htransp = 0xffff; |
||
331 | |||
332 | hred = *red++; |
||
333 | hgreen = *green++; |
||
334 | hblue = *blue++; |
||
335 | |||
336 | if (transp) |
||
337 | htransp = *transp++; |
||
338 | |||
1246 | serge | 339 | rc = setcolreg(crtc, hred, hgreen, hblue, start++, info); |
340 | if (rc) |
||
341 | return rc; |
||
1221 | serge | 342 | } |
343 | crtc_funcs->load_lut(crtc); |
||
344 | } |
||
345 | return rc; |
||
346 | } |
||
347 | EXPORT_SYMBOL(drm_fb_helper_setcmap); |
||
348 | |||
1179 | serge | 349 | int drm_fb_helper_setcolreg(unsigned regno, |
350 | unsigned red, |
||
351 | unsigned green, |
||
352 | unsigned blue, |
||
353 | unsigned transp, |
||
354 | struct fb_info *info) |
||
355 | { |
||
356 | struct drm_fb_helper *fb_helper = info->par; |
||
357 | struct drm_device *dev = fb_helper->dev; |
||
358 | struct drm_crtc *crtc; |
||
359 | int i; |
||
1246 | serge | 360 | int ret; |
1179 | serge | 361 | |
1221 | serge | 362 | if (regno > 255) |
363 | return 1; |
||
364 | |||
1179 | serge | 365 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
1221 | serge | 366 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
1179 | serge | 367 | for (i = 0; i < fb_helper->crtc_count; i++) { |
368 | if (crtc->base.id == fb_helper->crtc_info[i].crtc_id) |
||
369 | break; |
||
370 | } |
||
371 | if (i == fb_helper->crtc_count) |
||
372 | continue; |
||
373 | |||
1246 | serge | 374 | ret = setcolreg(crtc, red, green, blue, regno, info); |
375 | if (ret) |
||
376 | return ret; |
||
1179 | serge | 377 | |
1221 | serge | 378 | crtc_funcs->load_lut(crtc); |
1179 | serge | 379 | } |
380 | return 0; |
||
381 | } |
||
382 | EXPORT_SYMBOL(drm_fb_helper_setcolreg); |
||
383 | |||
384 | int drm_fb_helper_check_var(struct fb_var_screeninfo *var, |
||
385 | struct fb_info *info) |
||
386 | { |
||
387 | struct drm_fb_helper *fb_helper = info->par; |
||
388 | struct drm_framebuffer *fb = fb_helper->fb; |
||
389 | int depth; |
||
390 | |||
1313 | serge | 391 | if (var->pixclock != 0) |
1179 | serge | 392 | return -EINVAL; |
393 | |||
394 | /* Need to resize the fb object !!! */ |
||
1404 | serge | 395 | if (var->bits_per_pixel > fb->bits_per_pixel || var->xres > fb->width || var->yres > fb->height) { |
396 | DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb " |
||
397 | "object %dx%d-%d > %dx%d-%d\n", var->xres, var->yres, var->bits_per_pixel, |
||
398 | fb->width, fb->height, fb->bits_per_pixel); |
||
1179 | serge | 399 | return -EINVAL; |
400 | } |
||
401 | |||
402 | switch (var->bits_per_pixel) { |
||
403 | case 16: |
||
404 | depth = (var->green.length == 6) ? 16 : 15; |
||
405 | break; |
||
406 | case 32: |
||
407 | depth = (var->transp.length > 0) ? 32 : 24; |
||
408 | break; |
||
409 | default: |
||
410 | depth = var->bits_per_pixel; |
||
411 | break; |
||
412 | } |
||
413 | |||
414 | switch (depth) { |
||
415 | case 8: |
||
416 | var->red.offset = 0; |
||
417 | var->green.offset = 0; |
||
418 | var->blue.offset = 0; |
||
419 | var->red.length = 8; |
||
420 | var->green.length = 8; |
||
421 | var->blue.length = 8; |
||
422 | var->transp.length = 0; |
||
423 | var->transp.offset = 0; |
||
424 | break; |
||
425 | case 15: |
||
426 | var->red.offset = 10; |
||
427 | var->green.offset = 5; |
||
428 | var->blue.offset = 0; |
||
429 | var->red.length = 5; |
||
430 | var->green.length = 5; |
||
431 | var->blue.length = 5; |
||
432 | var->transp.length = 1; |
||
433 | var->transp.offset = 15; |
||
434 | break; |
||
435 | case 16: |
||
436 | var->red.offset = 11; |
||
437 | var->green.offset = 5; |
||
438 | var->blue.offset = 0; |
||
439 | var->red.length = 5; |
||
440 | var->green.length = 6; |
||
441 | var->blue.length = 5; |
||
442 | var->transp.length = 0; |
||
443 | var->transp.offset = 0; |
||
444 | break; |
||
445 | case 24: |
||
446 | var->red.offset = 16; |
||
447 | var->green.offset = 8; |
||
448 | var->blue.offset = 0; |
||
449 | var->red.length = 8; |
||
450 | var->green.length = 8; |
||
451 | var->blue.length = 8; |
||
452 | var->transp.length = 0; |
||
453 | var->transp.offset = 0; |
||
454 | break; |
||
455 | case 32: |
||
456 | var->red.offset = 16; |
||
457 | var->green.offset = 8; |
||
458 | var->blue.offset = 0; |
||
459 | var->red.length = 8; |
||
460 | var->green.length = 8; |
||
461 | var->blue.length = 8; |
||
462 | var->transp.length = 8; |
||
463 | var->transp.offset = 24; |
||
464 | break; |
||
465 | default: |
||
466 | return -EINVAL; |
||
467 | } |
||
468 | return 0; |
||
469 | } |
||
470 | EXPORT_SYMBOL(drm_fb_helper_check_var); |
||
471 | |||
472 | /* this will let fbcon do the mode init */ |
||
473 | int drm_fb_helper_set_par(struct fb_info *info) |
||
474 | { |
||
475 | struct drm_fb_helper *fb_helper = info->par; |
||
476 | struct drm_device *dev = fb_helper->dev; |
||
477 | struct fb_var_screeninfo *var = &info->var; |
||
478 | struct drm_crtc *crtc; |
||
479 | int ret; |
||
480 | int i; |
||
481 | |||
1313 | serge | 482 | if (var->pixclock != 0) { |
1179 | serge | 483 | DRM_ERROR("PIXEL CLCOK SET\n"); |
484 | return -EINVAL; |
||
485 | } |
||
486 | |||
487 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
||
488 | |||
489 | for (i = 0; i < fb_helper->crtc_count; i++) { |
||
490 | if (crtc->base.id == fb_helper->crtc_info[i].crtc_id) |
||
491 | break; |
||
492 | } |
||
493 | if (i == fb_helper->crtc_count) |
||
494 | continue; |
||
495 | |||
496 | if (crtc->fb == fb_helper->crtc_info[i].mode_set.fb) { |
||
497 | mutex_lock(&dev->mode_config.mutex); |
||
1268 | serge | 498 | ret = crtc->funcs->set_config(&fb_helper->crtc_info[i].mode_set); |
1179 | serge | 499 | mutex_unlock(&dev->mode_config.mutex); |
500 | if (ret) |
||
501 | return ret; |
||
502 | } |
||
503 | } |
||
504 | return 0; |
||
505 | } |
||
506 | EXPORT_SYMBOL(drm_fb_helper_set_par); |
||
507 | |||
508 | int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, |
||
509 | struct fb_info *info) |
||
510 | { |
||
511 | struct drm_fb_helper *fb_helper = info->par; |
||
512 | struct drm_device *dev = fb_helper->dev; |
||
513 | struct drm_mode_set *modeset; |
||
514 | struct drm_crtc *crtc; |
||
515 | int ret = 0; |
||
516 | int i; |
||
517 | |||
518 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
||
519 | for (i = 0; i < fb_helper->crtc_count; i++) { |
||
520 | if (crtc->base.id == fb_helper->crtc_info[i].crtc_id) |
||
521 | break; |
||
522 | } |
||
523 | |||
524 | if (i == fb_helper->crtc_count) |
||
525 | continue; |
||
526 | |||
527 | modeset = &fb_helper->crtc_info[i].mode_set; |
||
528 | |||
529 | modeset->x = var->xoffset; |
||
530 | modeset->y = var->yoffset; |
||
531 | |||
532 | if (modeset->num_connectors) { |
||
533 | mutex_lock(&dev->mode_config.mutex); |
||
534 | ret = crtc->funcs->set_config(modeset); |
||
535 | mutex_unlock(&dev->mode_config.mutex); |
||
536 | if (!ret) { |
||
537 | info->var.xoffset = var->xoffset; |
||
538 | info->var.yoffset = var->yoffset; |
||
539 | } |
||
540 | } |
||
541 | } |
||
542 | return ret; |
||
543 | } |
||
544 | EXPORT_SYMBOL(drm_fb_helper_pan_display); |
||
545 | |||
546 | int drm_fb_helper_single_fb_probe(struct drm_device *dev, |
||
1221 | serge | 547 | int preferred_bpp, |
1179 | serge | 548 | int (*fb_create)(struct drm_device *dev, |
549 | uint32_t fb_width, |
||
550 | uint32_t fb_height, |
||
551 | uint32_t surface_width, |
||
552 | uint32_t surface_height, |
||
1221 | serge | 553 | uint32_t surface_depth, |
554 | uint32_t surface_bpp, |
||
1179 | serge | 555 | struct drm_framebuffer **fb_ptr)) |
556 | { |
||
557 | struct drm_crtc *crtc; |
||
558 | struct drm_connector *connector; |
||
559 | unsigned int fb_width = (unsigned)-1, fb_height = (unsigned)-1; |
||
560 | unsigned int surface_width = 0, surface_height = 0; |
||
561 | int new_fb = 0; |
||
562 | int crtc_count = 0; |
||
563 | int ret, i, conn_count = 0; |
||
564 | struct fb_info *info; |
||
565 | struct drm_framebuffer *fb; |
||
566 | struct drm_mode_set *modeset = NULL; |
||
567 | struct drm_fb_helper *fb_helper; |
||
1221 | serge | 568 | uint32_t surface_depth = 24, surface_bpp = 32; |
1179 | serge | 569 | |
1221 | serge | 570 | /* if driver picks 8 or 16 by default use that |
571 | for both depth/bpp */ |
||
572 | if (preferred_bpp != surface_bpp) { |
||
573 | surface_depth = surface_bpp = preferred_bpp; |
||
574 | } |
||
1179 | serge | 575 | /* first up get a count of crtcs now in use and new min/maxes width/heights */ |
1221 | serge | 576 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
577 | struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private; |
||
578 | |||
579 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
||
580 | |||
581 | if (!fb_help_conn) |
||
582 | continue; |
||
583 | |||
584 | cmdline_mode = &fb_help_conn->cmdline_mode; |
||
585 | |||
586 | if (cmdline_mode->bpp_specified) { |
||
587 | switch (cmdline_mode->bpp) { |
||
588 | case 8: |
||
589 | surface_depth = surface_bpp = 8; |
||
590 | break; |
||
591 | case 15: |
||
592 | surface_depth = 15; |
||
593 | surface_bpp = 16; |
||
594 | break; |
||
595 | case 16: |
||
596 | surface_depth = surface_bpp = 16; |
||
597 | break; |
||
598 | case 24: |
||
599 | surface_depth = surface_bpp = 24; |
||
600 | break; |
||
601 | case 32: |
||
602 | surface_depth = 24; |
||
603 | surface_bpp = 32; |
||
604 | break; |
||
605 | } |
||
606 | break; |
||
607 | } |
||
608 | } |
||
609 | |||
1179 | serge | 610 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
611 | if (drm_helper_crtc_in_use(crtc)) { |
||
612 | if (crtc->desired_mode) { |
||
613 | if (crtc->desired_mode->hdisplay < fb_width) |
||
614 | fb_width = crtc->desired_mode->hdisplay; |
||
615 | |||
616 | if (crtc->desired_mode->vdisplay < fb_height) |
||
617 | fb_height = crtc->desired_mode->vdisplay; |
||
618 | |||
619 | if (crtc->desired_mode->hdisplay > surface_width) |
||
620 | surface_width = crtc->desired_mode->hdisplay; |
||
621 | |||
622 | if (crtc->desired_mode->vdisplay > surface_height) |
||
623 | surface_height = crtc->desired_mode->vdisplay; |
||
624 | } |
||
625 | crtc_count++; |
||
626 | } |
||
627 | } |
||
628 | |||
629 | if (crtc_count == 0 || fb_width == -1 || fb_height == -1) { |
||
630 | /* hmm everyone went away - assume VGA cable just fell out |
||
631 | and will come back later. */ |
||
632 | return 0; |
||
633 | } |
||
634 | |||
635 | /* do we have an fb already? */ |
||
636 | if (list_empty(&dev->mode_config.fb_kernel_list)) { |
||
637 | ret = (*fb_create)(dev, fb_width, fb_height, surface_width, |
||
1221 | serge | 638 | surface_height, surface_depth, surface_bpp, |
639 | &fb); |
||
1179 | serge | 640 | if (ret) |
641 | return -EINVAL; |
||
642 | new_fb = 1; |
||
643 | } else { |
||
644 | fb = list_first_entry(&dev->mode_config.fb_kernel_list, |
||
645 | struct drm_framebuffer, filp_head); |
||
646 | |||
647 | /* if someone hotplugs something bigger than we have already allocated, we are pwned. |
||
648 | As really we can't resize an fbdev that is in the wild currently due to fbdev |
||
649 | not really being designed for the lower layers moving stuff around under it. |
||
650 | - so in the grand style of things - punt. */ |
||
651 | if ((fb->width < surface_width) || |
||
652 | (fb->height < surface_height)) { |
||
653 | DRM_ERROR("Framebuffer not large enough to scale console onto.\n"); |
||
654 | return -EINVAL; |
||
655 | } |
||
656 | } |
||
657 | |||
658 | info = fb->fbdev; |
||
659 | fb_helper = info->par; |
||
660 | |||
661 | crtc_count = 0; |
||
662 | /* okay we need to setup new connector sets in the crtcs */ |
||
663 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
||
664 | modeset = &fb_helper->crtc_info[crtc_count].mode_set; |
||
665 | modeset->fb = fb; |
||
666 | conn_count = 0; |
||
667 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
668 | if (connector->encoder) |
||
669 | if (connector->encoder->crtc == modeset->crtc) { |
||
670 | modeset->connectors[conn_count] = connector; |
||
671 | conn_count++; |
||
672 | if (conn_count > fb_helper->conn_limit) |
||
673 | BUG(); |
||
674 | } |
||
675 | } |
||
676 | |||
677 | for (i = conn_count; i < fb_helper->conn_limit; i++) |
||
678 | modeset->connectors[i] = NULL; |
||
679 | |||
680 | modeset->crtc = crtc; |
||
681 | crtc_count++; |
||
682 | |||
683 | modeset->num_connectors = conn_count; |
||
684 | if (modeset->crtc->desired_mode) { |
||
685 | if (modeset->mode) |
||
686 | drm_mode_destroy(dev, modeset->mode); |
||
687 | modeset->mode = drm_mode_duplicate(dev, |
||
688 | modeset->crtc->desired_mode); |
||
689 | } |
||
690 | } |
||
691 | fb_helper->crtc_count = crtc_count; |
||
692 | fb_helper->fb = fb; |
||
693 | |||
694 | if (new_fb) { |
||
1313 | serge | 695 | info->var.pixclock = 0; |
1179 | serge | 696 | } else { |
697 | drm_fb_helper_set_par(info); |
||
698 | } |
||
699 | printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, |
||
700 | info->fix.id); |
||
701 | |||
702 | /* Switch back to kernel console on panic */ |
||
703 | /* multi card linked list maybe */ |
||
704 | list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list); |
||
705 | return 0; |
||
706 | } |
||
707 | EXPORT_SYMBOL(drm_fb_helper_single_fb_probe); |
||
708 | |||
709 | void drm_fb_helper_free(struct drm_fb_helper *helper) |
||
710 | { |
||
711 | list_del(&helper->kernel_fb_list); |
||
712 | drm_fb_helper_crtc_free(helper); |
||
713 | } |
||
714 | EXPORT_SYMBOL(drm_fb_helper_free); |
||
715 | |||
1221 | serge | 716 | void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, |
717 | uint32_t depth) |
||
1179 | serge | 718 | { |
719 | info->fix.type = FB_TYPE_PACKED_PIXELS; |
||
1221 | serge | 720 | info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR : |
1246 | serge | 721 | FB_VISUAL_TRUECOLOR; |
1179 | serge | 722 | info->fix.type_aux = 0; |
723 | info->fix.xpanstep = 1; /* doing it in hw */ |
||
724 | info->fix.ypanstep = 1; /* doing it in hw */ |
||
725 | info->fix.ywrapstep = 0; |
||
726 | info->fix.accel = FB_ACCEL_NONE; |
||
727 | info->fix.type_aux = 0; |
||
728 | |||
729 | info->fix.line_length = pitch; |
||
730 | return; |
||
731 | } |
||
732 | EXPORT_SYMBOL(drm_fb_helper_fill_fix); |
||
733 | |||
734 | void drm_fb_helper_fill_var(struct fb_info *info, struct drm_framebuffer *fb, |
||
735 | uint32_t fb_width, uint32_t fb_height) |
||
736 | { |
||
737 | info->pseudo_palette = fb->pseudo_palette; |
||
738 | info->var.xres_virtual = fb->width; |
||
739 | info->var.yres_virtual = fb->height; |
||
740 | info->var.bits_per_pixel = fb->bits_per_pixel; |
||
741 | info->var.xoffset = 0; |
||
742 | info->var.yoffset = 0; |
||
743 | info->var.activate = FB_ACTIVATE_NOW; |
||
744 | info->var.height = -1; |
||
745 | info->var.width = -1; |
||
746 | |||
747 | switch (fb->depth) { |
||
748 | case 8: |
||
749 | info->var.red.offset = 0; |
||
750 | info->var.green.offset = 0; |
||
751 | info->var.blue.offset = 0; |
||
752 | info->var.red.length = 8; /* 8bit DAC */ |
||
753 | info->var.green.length = 8; |
||
754 | info->var.blue.length = 8; |
||
755 | info->var.transp.offset = 0; |
||
756 | info->var.transp.length = 0; |
||
757 | break; |
||
758 | case 15: |
||
759 | info->var.red.offset = 10; |
||
760 | info->var.green.offset = 5; |
||
761 | info->var.blue.offset = 0; |
||
762 | info->var.red.length = 5; |
||
763 | info->var.green.length = 5; |
||
764 | info->var.blue.length = 5; |
||
765 | info->var.transp.offset = 15; |
||
766 | info->var.transp.length = 1; |
||
767 | break; |
||
768 | case 16: |
||
769 | info->var.red.offset = 11; |
||
770 | info->var.green.offset = 5; |
||
771 | info->var.blue.offset = 0; |
||
772 | info->var.red.length = 5; |
||
773 | info->var.green.length = 6; |
||
774 | info->var.blue.length = 5; |
||
775 | info->var.transp.offset = 0; |
||
776 | break; |
||
777 | case 24: |
||
778 | info->var.red.offset = 16; |
||
779 | info->var.green.offset = 8; |
||
780 | info->var.blue.offset = 0; |
||
781 | info->var.red.length = 8; |
||
782 | info->var.green.length = 8; |
||
783 | info->var.blue.length = 8; |
||
784 | info->var.transp.offset = 0; |
||
785 | info->var.transp.length = 0; |
||
786 | break; |
||
787 | case 32: |
||
788 | info->var.red.offset = 16; |
||
789 | info->var.green.offset = 8; |
||
790 | info->var.blue.offset = 0; |
||
791 | info->var.red.length = 8; |
||
792 | info->var.green.length = 8; |
||
793 | info->var.blue.length = 8; |
||
794 | info->var.transp.offset = 24; |
||
795 | info->var.transp.length = 8; |
||
796 | break; |
||
797 | default: |
||
798 | break; |
||
799 | } |
||
800 | |||
801 | info->var.xres = fb_width; |
||
802 | info->var.yres = fb_height; |
||
803 | } |
||
804 | EXPORT_SYMBOL(drm_fb_helper_fill_var);>>>>>>>>>>>>>><>><>><>><>>>>>> |