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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 | */ | |
3b40a443 | 30 | #include <linux/kernel.h> |
785b93ef DA |
31 | #include <linux/sysrq.h> |
32 | #include <linux/fb.h> | |
33 | #include "drmP.h" | |
34 | #include "drm_crtc.h" | |
35 | #include "drm_fb_helper.h" | |
36 | #include "drm_crtc_helper.h" | |
37 | ||
6fcefd56 DA |
38 | MODULE_AUTHOR("David Airlie, Jesse Barnes"); |
39 | MODULE_DESCRIPTION("DRM KMS helper"); | |
40 | MODULE_LICENSE("GPL and additional rights"); | |
41 | ||
785b93ef DA |
42 | static LIST_HEAD(kernel_fb_helper_list); |
43 | ||
d50ba256 DA |
44 | int drm_fb_helper_add_connector(struct drm_connector *connector) |
45 | { | |
46 | connector->fb_helper_private = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL); | |
47 | if (!connector->fb_helper_private) | |
48 | return -ENOMEM; | |
49 | ||
50 | return 0; | |
d50ba256 DA |
51 | } |
52 | EXPORT_SYMBOL(drm_fb_helper_add_connector); | |
53 | ||
d50ba256 DA |
54 | /** |
55 | * drm_fb_helper_connector_parse_command_line - parse command line for connector | |
56 | * @connector - connector to parse line for | |
57 | * @mode_option - per connector mode option | |
58 | * | |
59 | * This parses the connector specific then generic command lines for | |
60 | * modes and options to configure the connector. | |
61 | * | |
62 | * This uses the same parameters as the fb modedb.c, except for extra | |
63 | * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m][eDd] | |
64 | * | |
65 | * enable/enable Digital/disable bit at the end | |
66 | */ | |
67 | static bool drm_fb_helper_connector_parse_command_line(struct drm_connector *connector, | |
68 | const char *mode_option) | |
69 | { | |
70 | const char *name; | |
71 | unsigned int namelen; | |
72 | int res_specified = 0, bpp_specified = 0, refresh_specified = 0; | |
73 | unsigned int xres = 0, yres = 0, bpp = 32, refresh = 0; | |
74 | int yres_specified = 0, cvt = 0, rb = 0, interlace = 0, margins = 0; | |
75 | int i; | |
76 | enum drm_connector_force force = DRM_FORCE_UNSPECIFIED; | |
77 | struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private; | |
8ef8678c | 78 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
d50ba256 | 79 | |
8ef8678c DA |
80 | if (!fb_help_conn) |
81 | return false; | |
82 | ||
83 | cmdline_mode = &fb_help_conn->cmdline_mode; | |
d50ba256 DA |
84 | if (!mode_option) |
85 | mode_option = fb_mode_option; | |
86 | ||
87 | if (!mode_option) { | |
88 | cmdline_mode->specified = false; | |
89 | return false; | |
90 | } | |
91 | ||
92 | name = mode_option; | |
93 | namelen = strlen(name); | |
94 | for (i = namelen-1; i >= 0; i--) { | |
95 | switch (name[i]) { | |
96 | case '@': | |
97 | namelen = i; | |
98 | if (!refresh_specified && !bpp_specified && | |
99 | !yres_specified) { | |
3b40a443 | 100 | refresh = simple_strtol(&name[i+1], NULL, 10); |
d50ba256 DA |
101 | refresh_specified = 1; |
102 | if (cvt || rb) | |
103 | cvt = 0; | |
104 | } else | |
105 | goto done; | |
106 | break; | |
107 | case '-': | |
108 | namelen = i; | |
109 | if (!bpp_specified && !yres_specified) { | |
3b40a443 | 110 | bpp = simple_strtol(&name[i+1], NULL, 10); |
d50ba256 DA |
111 | bpp_specified = 1; |
112 | if (cvt || rb) | |
113 | cvt = 0; | |
114 | } else | |
115 | goto done; | |
116 | break; | |
117 | case 'x': | |
118 | if (!yres_specified) { | |
3b40a443 | 119 | yres = simple_strtol(&name[i+1], NULL, 10); |
d50ba256 DA |
120 | yres_specified = 1; |
121 | } else | |
122 | goto done; | |
123 | case '0' ... '9': | |
124 | break; | |
125 | case 'M': | |
126 | if (!yres_specified) | |
127 | cvt = 1; | |
128 | break; | |
129 | case 'R': | |
130 | if (!cvt) | |
131 | rb = 1; | |
132 | break; | |
133 | case 'm': | |
134 | if (!cvt) | |
135 | margins = 1; | |
136 | break; | |
137 | case 'i': | |
138 | if (!cvt) | |
139 | interlace = 1; | |
140 | break; | |
141 | case 'e': | |
142 | force = DRM_FORCE_ON; | |
143 | break; | |
144 | case 'D': | |
e89a8c90 | 145 | if ((connector->connector_type != DRM_MODE_CONNECTOR_DVII) && |
d50ba256 DA |
146 | (connector->connector_type != DRM_MODE_CONNECTOR_HDMIB)) |
147 | force = DRM_FORCE_ON; | |
148 | else | |
149 | force = DRM_FORCE_ON_DIGITAL; | |
150 | break; | |
151 | case 'd': | |
152 | force = DRM_FORCE_OFF; | |
153 | break; | |
154 | default: | |
155 | goto done; | |
156 | } | |
157 | } | |
158 | if (i < 0 && yres_specified) { | |
3b40a443 | 159 | xres = simple_strtol(name, NULL, 10); |
d50ba256 DA |
160 | res_specified = 1; |
161 | } | |
162 | done: | |
163 | ||
164 | DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n", | |
165 | drm_get_connector_name(connector), xres, yres, | |
166 | (refresh) ? refresh : 60, (rb) ? " reduced blanking" : | |
167 | "", (margins) ? " with margins" : "", (interlace) ? | |
168 | " interlaced" : ""); | |
169 | ||
170 | if (force) { | |
171 | const char *s; | |
172 | switch (force) { | |
173 | case DRM_FORCE_OFF: s = "OFF"; break; | |
174 | case DRM_FORCE_ON_DIGITAL: s = "ON - dig"; break; | |
175 | default: | |
176 | case DRM_FORCE_ON: s = "ON"; break; | |
177 | } | |
178 | ||
179 | DRM_INFO("forcing %s connector %s\n", | |
180 | drm_get_connector_name(connector), s); | |
181 | connector->force = force; | |
182 | } | |
183 | ||
184 | if (res_specified) { | |
185 | cmdline_mode->specified = true; | |
186 | cmdline_mode->xres = xres; | |
187 | cmdline_mode->yres = yres; | |
188 | } | |
189 | ||
190 | if (refresh_specified) { | |
191 | cmdline_mode->refresh_specified = true; | |
192 | cmdline_mode->refresh = refresh; | |
193 | } | |
194 | ||
195 | if (bpp_specified) { | |
196 | cmdline_mode->bpp_specified = true; | |
197 | cmdline_mode->bpp = bpp; | |
198 | } | |
199 | cmdline_mode->rb = rb ? true : false; | |
200 | cmdline_mode->cvt = cvt ? true : false; | |
201 | cmdline_mode->interlace = interlace ? true : false; | |
202 | ||
203 | return true; | |
204 | } | |
205 | ||
206 | int drm_fb_helper_parse_command_line(struct drm_device *dev) | |
207 | { | |
208 | struct drm_connector *connector; | |
209 | ||
210 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
211 | char *option = NULL; | |
212 | ||
213 | /* do something on return - turn off connector maybe */ | |
214 | if (fb_get_options(drm_get_connector_name(connector), &option)) | |
215 | continue; | |
216 | ||
217 | drm_fb_helper_connector_parse_command_line(connector, option); | |
218 | } | |
219 | return 0; | |
220 | } | |
221 | ||
785b93ef DA |
222 | bool drm_fb_helper_force_kernel_mode(void) |
223 | { | |
224 | int i = 0; | |
225 | bool ret, error = false; | |
226 | struct drm_fb_helper *helper; | |
227 | ||
228 | if (list_empty(&kernel_fb_helper_list)) | |
229 | return false; | |
230 | ||
231 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { | |
232 | for (i = 0; i < helper->crtc_count; i++) { | |
233 | struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set; | |
234 | ret = drm_crtc_helper_set_config(mode_set); | |
235 | if (ret) | |
236 | error = true; | |
237 | } | |
238 | } | |
239 | return error; | |
240 | } | |
241 | ||
242 | int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed, | |
243 | void *panic_str) | |
244 | { | |
245 | DRM_ERROR("panic occurred, switching back to text console\n"); | |
246 | return drm_fb_helper_force_kernel_mode(); | |
247 | return 0; | |
248 | } | |
249 | EXPORT_SYMBOL(drm_fb_helper_panic); | |
250 | ||
251 | static struct notifier_block paniced = { | |
252 | .notifier_call = drm_fb_helper_panic, | |
253 | }; | |
254 | ||
255 | /** | |
256 | * drm_fb_helper_restore - restore the framebuffer console (kernel) config | |
257 | * | |
258 | * Restore's the kernel's fbcon mode, used for lastclose & panic paths. | |
259 | */ | |
260 | void drm_fb_helper_restore(void) | |
261 | { | |
262 | bool ret; | |
263 | ret = drm_fb_helper_force_kernel_mode(); | |
264 | if (ret == true) | |
265 | DRM_ERROR("Failed to restore crtc configuration\n"); | |
266 | } | |
267 | EXPORT_SYMBOL(drm_fb_helper_restore); | |
268 | ||
bea1d35b | 269 | #ifdef CONFIG_MAGIC_SYSRQ |
785b93ef DA |
270 | static void drm_fb_helper_restore_work_fn(struct work_struct *ignored) |
271 | { | |
272 | drm_fb_helper_restore(); | |
273 | } | |
274 | static DECLARE_WORK(drm_fb_helper_restore_work, drm_fb_helper_restore_work_fn); | |
275 | ||
276 | static void drm_fb_helper_sysrq(int dummy1, struct tty_struct *dummy3) | |
277 | { | |
278 | schedule_work(&drm_fb_helper_restore_work); | |
279 | } | |
280 | ||
281 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { | |
282 | .handler = drm_fb_helper_sysrq, | |
283 | .help_msg = "force-fb(V)", | |
284 | .action_msg = "Restore framebuffer console", | |
285 | }; | |
bea1d35b | 286 | #endif |
785b93ef DA |
287 | |
288 | static void drm_fb_helper_on(struct fb_info *info) | |
289 | { | |
290 | struct drm_fb_helper *fb_helper = info->par; | |
291 | struct drm_device *dev = fb_helper->dev; | |
292 | struct drm_crtc *crtc; | |
293 | struct drm_encoder *encoder; | |
294 | int i; | |
295 | ||
296 | /* | |
297 | * For each CRTC in this fb, turn the crtc on then, | |
298 | * find all associated encoders and turn them on. | |
299 | */ | |
e87b2c42 JB |
300 | for (i = 0; i < fb_helper->crtc_count; i++) { |
301 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
302 | struct drm_crtc_helper_funcs *crtc_funcs = | |
303 | crtc->helper_private; | |
785b93ef | 304 | |
e87b2c42 JB |
305 | /* Only mess with CRTCs in this fb */ |
306 | if (crtc->base.id != fb_helper->crtc_info[i].crtc_id || | |
307 | !crtc->enabled) | |
308 | continue; | |
785b93ef | 309 | |
e87b2c42 JB |
310 | mutex_lock(&dev->mode_config.mutex); |
311 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); | |
312 | mutex_unlock(&dev->mode_config.mutex); | |
785b93ef | 313 | |
e87b2c42 JB |
314 | /* Found a CRTC on this fb, now find encoders */ |
315 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
316 | if (encoder->crtc == crtc) { | |
317 | struct drm_encoder_helper_funcs *encoder_funcs; | |
785b93ef | 318 | |
e87b2c42 JB |
319 | encoder_funcs = encoder->helper_private; |
320 | mutex_lock(&dev->mode_config.mutex); | |
321 | encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); | |
322 | mutex_unlock(&dev->mode_config.mutex); | |
323 | } | |
785b93ef DA |
324 | } |
325 | } | |
326 | } | |
327 | } | |
328 | ||
329 | static void drm_fb_helper_off(struct fb_info *info, int dpms_mode) | |
330 | { | |
331 | struct drm_fb_helper *fb_helper = info->par; | |
332 | struct drm_device *dev = fb_helper->dev; | |
333 | struct drm_crtc *crtc; | |
334 | struct drm_encoder *encoder; | |
335 | int i; | |
336 | ||
337 | /* | |
338 | * For each CRTC in this fb, find all associated encoders | |
339 | * and turn them off, then turn off the CRTC. | |
340 | */ | |
e87b2c42 JB |
341 | for (i = 0; i < fb_helper->crtc_count; i++) { |
342 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
343 | struct drm_crtc_helper_funcs *crtc_funcs = | |
344 | crtc->helper_private; | |
345 | ||
346 | /* Only mess with CRTCs in this fb */ | |
347 | if (crtc->base.id != fb_helper->crtc_info[i].crtc_id || | |
348 | !crtc->enabled) | |
349 | continue; | |
350 | ||
351 | /* Found a CRTC on this fb, now find encoders */ | |
352 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
353 | if (encoder->crtc == crtc) { | |
354 | struct drm_encoder_helper_funcs *encoder_funcs; | |
355 | ||
356 | encoder_funcs = encoder->helper_private; | |
357 | mutex_lock(&dev->mode_config.mutex); | |
358 | encoder_funcs->dpms(encoder, dpms_mode); | |
359 | mutex_unlock(&dev->mode_config.mutex); | |
360 | } | |
361 | } | |
731b5a15 JS |
362 | mutex_lock(&dev->mode_config.mutex); |
363 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF); | |
364 | mutex_unlock(&dev->mode_config.mutex); | |
785b93ef | 365 | } |
785b93ef DA |
366 | } |
367 | } | |
368 | ||
369 | int drm_fb_helper_blank(int blank, struct fb_info *info) | |
370 | { | |
371 | switch (blank) { | |
731b5a15 | 372 | /* Display: On; HSync: On, VSync: On */ |
785b93ef DA |
373 | case FB_BLANK_UNBLANK: |
374 | drm_fb_helper_on(info); | |
375 | break; | |
731b5a15 | 376 | /* Display: Off; HSync: On, VSync: On */ |
785b93ef | 377 | case FB_BLANK_NORMAL: |
5fd4df4d | 378 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); |
785b93ef | 379 | break; |
731b5a15 | 380 | /* Display: Off; HSync: Off, VSync: On */ |
785b93ef DA |
381 | case FB_BLANK_HSYNC_SUSPEND: |
382 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); | |
383 | break; | |
731b5a15 | 384 | /* Display: Off; HSync: On, VSync: Off */ |
785b93ef DA |
385 | case FB_BLANK_VSYNC_SUSPEND: |
386 | drm_fb_helper_off(info, DRM_MODE_DPMS_SUSPEND); | |
387 | break; | |
731b5a15 | 388 | /* Display: Off; HSync: Off, VSync: Off */ |
785b93ef DA |
389 | case FB_BLANK_POWERDOWN: |
390 | drm_fb_helper_off(info, DRM_MODE_DPMS_OFF); | |
391 | break; | |
392 | } | |
393 | return 0; | |
394 | } | |
395 | EXPORT_SYMBOL(drm_fb_helper_blank); | |
396 | ||
397 | static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) | |
398 | { | |
399 | int i; | |
400 | ||
401 | for (i = 0; i < helper->crtc_count; i++) | |
402 | kfree(helper->crtc_info[i].mode_set.connectors); | |
403 | kfree(helper->crtc_info); | |
404 | } | |
405 | ||
406 | int drm_fb_helper_init_crtc_count(struct drm_fb_helper *helper, int crtc_count, int max_conn_count) | |
407 | { | |
408 | struct drm_device *dev = helper->dev; | |
409 | struct drm_crtc *crtc; | |
410 | int ret = 0; | |
411 | int i; | |
412 | ||
413 | helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL); | |
414 | if (!helper->crtc_info) | |
415 | return -ENOMEM; | |
416 | ||
417 | helper->crtc_count = crtc_count; | |
418 | ||
419 | for (i = 0; i < crtc_count; i++) { | |
420 | helper->crtc_info[i].mode_set.connectors = | |
421 | kcalloc(max_conn_count, | |
422 | sizeof(struct drm_connector *), | |
423 | GFP_KERNEL); | |
424 | ||
425 | if (!helper->crtc_info[i].mode_set.connectors) { | |
426 | ret = -ENOMEM; | |
427 | goto out_free; | |
428 | } | |
429 | helper->crtc_info[i].mode_set.num_connectors = 0; | |
430 | } | |
431 | ||
432 | i = 0; | |
433 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
434 | helper->crtc_info[i].crtc_id = crtc->base.id; | |
435 | helper->crtc_info[i].mode_set.crtc = crtc; | |
436 | i++; | |
437 | } | |
438 | helper->conn_limit = max_conn_count; | |
439 | return 0; | |
440 | out_free: | |
441 | drm_fb_helper_crtc_free(helper); | |
442 | return -ENOMEM; | |
443 | } | |
444 | EXPORT_SYMBOL(drm_fb_helper_init_crtc_count); | |
445 | ||
c850cb78 | 446 | static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, |
b8c00ac5 DA |
447 | u16 blue, u16 regno, struct fb_info *info) |
448 | { | |
449 | struct drm_fb_helper *fb_helper = info->par; | |
450 | struct drm_framebuffer *fb = fb_helper->fb; | |
451 | int pindex; | |
452 | ||
c850cb78 DA |
453 | if (info->fix.visual == FB_VISUAL_TRUECOLOR) { |
454 | u32 *palette; | |
455 | u32 value; | |
456 | /* place color in psuedopalette */ | |
457 | if (regno > 16) | |
458 | return -EINVAL; | |
459 | palette = (u32 *)info->pseudo_palette; | |
460 | red >>= (16 - info->var.red.length); | |
461 | green >>= (16 - info->var.green.length); | |
462 | blue >>= (16 - info->var.blue.length); | |
463 | value = (red << info->var.red.offset) | | |
464 | (green << info->var.green.offset) | | |
465 | (blue << info->var.blue.offset); | |
466 | palette[regno] = value; | |
467 | return 0; | |
468 | } | |
469 | ||
b8c00ac5 DA |
470 | pindex = regno; |
471 | ||
472 | if (fb->bits_per_pixel == 16) { | |
473 | pindex = regno << 3; | |
474 | ||
475 | if (fb->depth == 16 && regno > 63) | |
c850cb78 | 476 | return -EINVAL; |
b8c00ac5 | 477 | if (fb->depth == 15 && regno > 31) |
c850cb78 | 478 | return -EINVAL; |
b8c00ac5 DA |
479 | |
480 | if (fb->depth == 16) { | |
481 | u16 r, g, b; | |
482 | int i; | |
483 | if (regno < 32) { | |
484 | for (i = 0; i < 8; i++) | |
485 | fb_helper->funcs->gamma_set(crtc, red, | |
486 | green, blue, pindex + i); | |
487 | } | |
488 | ||
489 | fb_helper->funcs->gamma_get(crtc, &r, | |
490 | &g, &b, | |
491 | pindex >> 1); | |
492 | ||
493 | for (i = 0; i < 4; i++) | |
494 | fb_helper->funcs->gamma_set(crtc, r, | |
495 | green, b, | |
496 | (pindex >> 1) + i); | |
497 | } | |
498 | } | |
499 | ||
500 | if (fb->depth != 16) | |
501 | fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex); | |
c850cb78 | 502 | return 0; |
b8c00ac5 DA |
503 | } |
504 | ||
068143d3 DA |
505 | int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) |
506 | { | |
507 | struct drm_fb_helper *fb_helper = info->par; | |
508 | struct drm_device *dev = fb_helper->dev; | |
509 | u16 *red, *green, *blue, *transp; | |
510 | struct drm_crtc *crtc; | |
511 | int i, rc = 0; | |
512 | int start; | |
513 | ||
514 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
515 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
516 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
517 | if (crtc->base.id == fb_helper->crtc_info[i].crtc_id) | |
518 | break; | |
519 | } | |
520 | if (i == fb_helper->crtc_count) | |
521 | continue; | |
522 | ||
523 | red = cmap->red; | |
524 | green = cmap->green; | |
525 | blue = cmap->blue; | |
526 | transp = cmap->transp; | |
527 | start = cmap->start; | |
528 | ||
529 | for (i = 0; i < cmap->len; i++) { | |
530 | u16 hred, hgreen, hblue, htransp = 0xffff; | |
531 | ||
532 | hred = *red++; | |
533 | hgreen = *green++; | |
534 | hblue = *blue++; | |
535 | ||
536 | if (transp) | |
537 | htransp = *transp++; | |
538 | ||
c850cb78 DA |
539 | rc = setcolreg(crtc, hred, hgreen, hblue, start++, info); |
540 | if (rc) | |
541 | return rc; | |
068143d3 DA |
542 | } |
543 | crtc_funcs->load_lut(crtc); | |
544 | } | |
545 | return rc; | |
546 | } | |
547 | EXPORT_SYMBOL(drm_fb_helper_setcmap); | |
548 | ||
785b93ef DA |
549 | int drm_fb_helper_setcolreg(unsigned regno, |
550 | unsigned red, | |
551 | unsigned green, | |
552 | unsigned blue, | |
553 | unsigned transp, | |
554 | struct fb_info *info) | |
555 | { | |
556 | struct drm_fb_helper *fb_helper = info->par; | |
557 | struct drm_device *dev = fb_helper->dev; | |
558 | struct drm_crtc *crtc; | |
559 | int i; | |
c850cb78 | 560 | int ret; |
785b93ef | 561 | |
b8c00ac5 DA |
562 | if (regno > 255) |
563 | return 1; | |
785b93ef | 564 | |
b8c00ac5 DA |
565 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
566 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
785b93ef DA |
567 | for (i = 0; i < fb_helper->crtc_count; i++) { |
568 | if (crtc->base.id == fb_helper->crtc_info[i].crtc_id) | |
569 | break; | |
570 | } | |
571 | if (i == fb_helper->crtc_count) | |
572 | continue; | |
573 | ||
c850cb78 DA |
574 | ret = setcolreg(crtc, red, green, blue, regno, info); |
575 | if (ret) | |
576 | return ret; | |
785b93ef | 577 | |
b8c00ac5 | 578 | crtc_funcs->load_lut(crtc); |
785b93ef DA |
579 | } |
580 | return 0; | |
581 | } | |
582 | EXPORT_SYMBOL(drm_fb_helper_setcolreg); | |
583 | ||
584 | int drm_fb_helper_check_var(struct fb_var_screeninfo *var, | |
585 | struct fb_info *info) | |
586 | { | |
587 | struct drm_fb_helper *fb_helper = info->par; | |
588 | struct drm_framebuffer *fb = fb_helper->fb; | |
589 | int depth; | |
590 | ||
5349ef31 | 591 | if (var->pixclock != 0) |
785b93ef DA |
592 | return -EINVAL; |
593 | ||
594 | /* Need to resize the fb object !!! */ | |
509c7d83 DA |
595 | if (var->bits_per_pixel > fb->bits_per_pixel || var->xres > fb->width || var->yres > fb->height) { |
596 | DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb " | |
597 | "object %dx%d-%d > %dx%d-%d\n", var->xres, var->yres, var->bits_per_pixel, | |
598 | fb->width, fb->height, fb->bits_per_pixel); | |
785b93ef DA |
599 | return -EINVAL; |
600 | } | |
601 | ||
602 | switch (var->bits_per_pixel) { | |
603 | case 16: | |
604 | depth = (var->green.length == 6) ? 16 : 15; | |
605 | break; | |
606 | case 32: | |
607 | depth = (var->transp.length > 0) ? 32 : 24; | |
608 | break; | |
609 | default: | |
610 | depth = var->bits_per_pixel; | |
611 | break; | |
612 | } | |
613 | ||
614 | switch (depth) { | |
615 | case 8: | |
616 | var->red.offset = 0; | |
617 | var->green.offset = 0; | |
618 | var->blue.offset = 0; | |
619 | var->red.length = 8; | |
620 | var->green.length = 8; | |
621 | var->blue.length = 8; | |
622 | var->transp.length = 0; | |
623 | var->transp.offset = 0; | |
624 | break; | |
625 | case 15: | |
626 | var->red.offset = 10; | |
627 | var->green.offset = 5; | |
628 | var->blue.offset = 0; | |
629 | var->red.length = 5; | |
630 | var->green.length = 5; | |
631 | var->blue.length = 5; | |
632 | var->transp.length = 1; | |
633 | var->transp.offset = 15; | |
634 | break; | |
635 | case 16: | |
636 | var->red.offset = 11; | |
637 | var->green.offset = 5; | |
638 | var->blue.offset = 0; | |
639 | var->red.length = 5; | |
640 | var->green.length = 6; | |
641 | var->blue.length = 5; | |
642 | var->transp.length = 0; | |
643 | var->transp.offset = 0; | |
644 | break; | |
645 | case 24: | |
646 | var->red.offset = 16; | |
647 | var->green.offset = 8; | |
648 | var->blue.offset = 0; | |
649 | var->red.length = 8; | |
650 | var->green.length = 8; | |
651 | var->blue.length = 8; | |
652 | var->transp.length = 0; | |
653 | var->transp.offset = 0; | |
654 | break; | |
655 | case 32: | |
656 | var->red.offset = 16; | |
657 | var->green.offset = 8; | |
658 | var->blue.offset = 0; | |
659 | var->red.length = 8; | |
660 | var->green.length = 8; | |
661 | var->blue.length = 8; | |
662 | var->transp.length = 8; | |
663 | var->transp.offset = 24; | |
664 | break; | |
665 | default: | |
666 | return -EINVAL; | |
667 | } | |
668 | return 0; | |
669 | } | |
670 | EXPORT_SYMBOL(drm_fb_helper_check_var); | |
671 | ||
672 | /* this will let fbcon do the mode init */ | |
673 | int drm_fb_helper_set_par(struct fb_info *info) | |
674 | { | |
675 | struct drm_fb_helper *fb_helper = info->par; | |
676 | struct drm_device *dev = fb_helper->dev; | |
677 | struct fb_var_screeninfo *var = &info->var; | |
678 | struct drm_crtc *crtc; | |
679 | int ret; | |
680 | int i; | |
681 | ||
5349ef31 | 682 | if (var->pixclock != 0) { |
785b93ef DA |
683 | DRM_ERROR("PIXEL CLCOK SET\n"); |
684 | return -EINVAL; | |
685 | } | |
686 | ||
687 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
688 | ||
689 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
690 | if (crtc->base.id == fb_helper->crtc_info[i].crtc_id) | |
691 | break; | |
692 | } | |
693 | if (i == fb_helper->crtc_count) | |
694 | continue; | |
695 | ||
696 | if (crtc->fb == fb_helper->crtc_info[i].mode_set.fb) { | |
697 | mutex_lock(&dev->mode_config.mutex); | |
a2d49ae7 | 698 | ret = crtc->funcs->set_config(&fb_helper->crtc_info[i].mode_set); |
785b93ef DA |
699 | mutex_unlock(&dev->mode_config.mutex); |
700 | if (ret) | |
701 | return ret; | |
702 | } | |
703 | } | |
704 | return 0; | |
705 | } | |
706 | EXPORT_SYMBOL(drm_fb_helper_set_par); | |
707 | ||
708 | int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, | |
709 | struct fb_info *info) | |
710 | { | |
711 | struct drm_fb_helper *fb_helper = info->par; | |
712 | struct drm_device *dev = fb_helper->dev; | |
713 | struct drm_mode_set *modeset; | |
714 | struct drm_crtc *crtc; | |
715 | int ret = 0; | |
716 | int i; | |
717 | ||
718 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
719 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
720 | if (crtc->base.id == fb_helper->crtc_info[i].crtc_id) | |
721 | break; | |
722 | } | |
723 | ||
724 | if (i == fb_helper->crtc_count) | |
725 | continue; | |
726 | ||
727 | modeset = &fb_helper->crtc_info[i].mode_set; | |
728 | ||
729 | modeset->x = var->xoffset; | |
730 | modeset->y = var->yoffset; | |
731 | ||
732 | if (modeset->num_connectors) { | |
733 | mutex_lock(&dev->mode_config.mutex); | |
734 | ret = crtc->funcs->set_config(modeset); | |
735 | mutex_unlock(&dev->mode_config.mutex); | |
736 | if (!ret) { | |
737 | info->var.xoffset = var->xoffset; | |
738 | info->var.yoffset = var->yoffset; | |
739 | } | |
740 | } | |
741 | } | |
742 | return ret; | |
743 | } | |
744 | EXPORT_SYMBOL(drm_fb_helper_pan_display); | |
745 | ||
746 | int drm_fb_helper_single_fb_probe(struct drm_device *dev, | |
b8c00ac5 | 747 | int preferred_bpp, |
785b93ef DA |
748 | int (*fb_create)(struct drm_device *dev, |
749 | uint32_t fb_width, | |
750 | uint32_t fb_height, | |
751 | uint32_t surface_width, | |
752 | uint32_t surface_height, | |
d50ba256 DA |
753 | uint32_t surface_depth, |
754 | uint32_t surface_bpp, | |
785b93ef DA |
755 | struct drm_framebuffer **fb_ptr)) |
756 | { | |
757 | struct drm_crtc *crtc; | |
758 | struct drm_connector *connector; | |
759 | unsigned int fb_width = (unsigned)-1, fb_height = (unsigned)-1; | |
760 | unsigned int surface_width = 0, surface_height = 0; | |
761 | int new_fb = 0; | |
762 | int crtc_count = 0; | |
763 | int ret, i, conn_count = 0; | |
764 | struct fb_info *info; | |
765 | struct drm_framebuffer *fb; | |
766 | struct drm_mode_set *modeset = NULL; | |
767 | struct drm_fb_helper *fb_helper; | |
d50ba256 | 768 | uint32_t surface_depth = 24, surface_bpp = 32; |
785b93ef | 769 | |
b8c00ac5 DA |
770 | /* if driver picks 8 or 16 by default use that |
771 | for both depth/bpp */ | |
772 | if (preferred_bpp != surface_bpp) { | |
773 | surface_depth = surface_bpp = preferred_bpp; | |
774 | } | |
785b93ef | 775 | /* first up get a count of crtcs now in use and new min/maxes width/heights */ |
d50ba256 DA |
776 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
777 | struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private; | |
8ef8678c DA |
778 | |
779 | struct drm_fb_helper_cmdline_mode *cmdline_mode; | |
780 | ||
781 | if (!fb_help_conn) | |
782 | continue; | |
783 | ||
784 | cmdline_mode = &fb_help_conn->cmdline_mode; | |
d50ba256 DA |
785 | |
786 | if (cmdline_mode->bpp_specified) { | |
787 | switch (cmdline_mode->bpp) { | |
788 | case 8: | |
789 | surface_depth = surface_bpp = 8; | |
790 | break; | |
791 | case 15: | |
792 | surface_depth = 15; | |
793 | surface_bpp = 16; | |
794 | break; | |
795 | case 16: | |
796 | surface_depth = surface_bpp = 16; | |
797 | break; | |
798 | case 24: | |
799 | surface_depth = surface_bpp = 24; | |
800 | break; | |
801 | case 32: | |
802 | surface_depth = 24; | |
803 | surface_bpp = 32; | |
804 | break; | |
805 | } | |
806 | break; | |
807 | } | |
808 | } | |
809 | ||
785b93ef DA |
810 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
811 | if (drm_helper_crtc_in_use(crtc)) { | |
812 | if (crtc->desired_mode) { | |
813 | if (crtc->desired_mode->hdisplay < fb_width) | |
814 | fb_width = crtc->desired_mode->hdisplay; | |
815 | ||
816 | if (crtc->desired_mode->vdisplay < fb_height) | |
817 | fb_height = crtc->desired_mode->vdisplay; | |
818 | ||
819 | if (crtc->desired_mode->hdisplay > surface_width) | |
820 | surface_width = crtc->desired_mode->hdisplay; | |
821 | ||
822 | if (crtc->desired_mode->vdisplay > surface_height) | |
823 | surface_height = crtc->desired_mode->vdisplay; | |
824 | } | |
825 | crtc_count++; | |
826 | } | |
827 | } | |
828 | ||
829 | if (crtc_count == 0 || fb_width == -1 || fb_height == -1) { | |
830 | /* hmm everyone went away - assume VGA cable just fell out | |
831 | and will come back later. */ | |
832 | return 0; | |
833 | } | |
834 | ||
835 | /* do we have an fb already? */ | |
836 | if (list_empty(&dev->mode_config.fb_kernel_list)) { | |
837 | ret = (*fb_create)(dev, fb_width, fb_height, surface_width, | |
d50ba256 DA |
838 | surface_height, surface_depth, surface_bpp, |
839 | &fb); | |
785b93ef DA |
840 | if (ret) |
841 | return -EINVAL; | |
842 | new_fb = 1; | |
843 | } else { | |
844 | fb = list_first_entry(&dev->mode_config.fb_kernel_list, | |
845 | struct drm_framebuffer, filp_head); | |
846 | ||
847 | /* if someone hotplugs something bigger than we have already allocated, we are pwned. | |
848 | As really we can't resize an fbdev that is in the wild currently due to fbdev | |
849 | not really being designed for the lower layers moving stuff around under it. | |
850 | - so in the grand style of things - punt. */ | |
851 | if ((fb->width < surface_width) || | |
852 | (fb->height < surface_height)) { | |
853 | DRM_ERROR("Framebuffer not large enough to scale console onto.\n"); | |
854 | return -EINVAL; | |
855 | } | |
856 | } | |
857 | ||
858 | info = fb->fbdev; | |
859 | fb_helper = info->par; | |
860 | ||
861 | crtc_count = 0; | |
862 | /* okay we need to setup new connector sets in the crtcs */ | |
863 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
864 | modeset = &fb_helper->crtc_info[crtc_count].mode_set; | |
865 | modeset->fb = fb; | |
866 | conn_count = 0; | |
867 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
868 | if (connector->encoder) | |
869 | if (connector->encoder->crtc == modeset->crtc) { | |
870 | modeset->connectors[conn_count] = connector; | |
871 | conn_count++; | |
872 | if (conn_count > fb_helper->conn_limit) | |
873 | BUG(); | |
874 | } | |
875 | } | |
876 | ||
877 | for (i = conn_count; i < fb_helper->conn_limit; i++) | |
878 | modeset->connectors[i] = NULL; | |
879 | ||
880 | modeset->crtc = crtc; | |
881 | crtc_count++; | |
882 | ||
883 | modeset->num_connectors = conn_count; | |
884 | if (modeset->crtc->desired_mode) { | |
885 | if (modeset->mode) | |
886 | drm_mode_destroy(dev, modeset->mode); | |
887 | modeset->mode = drm_mode_duplicate(dev, | |
888 | modeset->crtc->desired_mode); | |
889 | } | |
890 | } | |
891 | fb_helper->crtc_count = crtc_count; | |
892 | fb_helper->fb = fb; | |
893 | ||
894 | if (new_fb) { | |
5349ef31 | 895 | info->var.pixclock = 0; |
b0a007dc | 896 | ret = fb_alloc_cmap(&info->cmap, modeset->crtc->gamma_size, 0); |
3bea21b6 CL |
897 | if (ret) |
898 | return ret; | |
899 | if (register_framebuffer(info) < 0) { | |
900 | fb_dealloc_cmap(&info->cmap); | |
785b93ef | 901 | return -EINVAL; |
3bea21b6 | 902 | } |
785b93ef DA |
903 | } else { |
904 | drm_fb_helper_set_par(info); | |
905 | } | |
906 | printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, | |
907 | info->fix.id); | |
908 | ||
909 | /* Switch back to kernel console on panic */ | |
910 | /* multi card linked list maybe */ | |
911 | if (list_empty(&kernel_fb_helper_list)) { | |
912 | printk(KERN_INFO "registered panic notifier\n"); | |
913 | atomic_notifier_chain_register(&panic_notifier_list, | |
914 | &paniced); | |
915 | register_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
916 | } | |
917 | list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list); | |
918 | return 0; | |
919 | } | |
920 | EXPORT_SYMBOL(drm_fb_helper_single_fb_probe); | |
921 | ||
922 | void drm_fb_helper_free(struct drm_fb_helper *helper) | |
923 | { | |
924 | list_del(&helper->kernel_fb_list); | |
925 | if (list_empty(&kernel_fb_helper_list)) { | |
926 | printk(KERN_INFO "unregistered panic notifier\n"); | |
927 | atomic_notifier_chain_unregister(&panic_notifier_list, | |
928 | &paniced); | |
929 | unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
930 | } | |
931 | drm_fb_helper_crtc_free(helper); | |
3bea21b6 | 932 | fb_dealloc_cmap(&helper->fb->fbdev->cmap); |
785b93ef DA |
933 | } |
934 | EXPORT_SYMBOL(drm_fb_helper_free); | |
935 | ||
068143d3 DA |
936 | void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, |
937 | uint32_t depth) | |
785b93ef DA |
938 | { |
939 | info->fix.type = FB_TYPE_PACKED_PIXELS; | |
068143d3 | 940 | info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR : |
c850cb78 | 941 | FB_VISUAL_TRUECOLOR; |
785b93ef DA |
942 | info->fix.type_aux = 0; |
943 | info->fix.xpanstep = 1; /* doing it in hw */ | |
944 | info->fix.ypanstep = 1; /* doing it in hw */ | |
945 | info->fix.ywrapstep = 0; | |
3420e742 | 946 | info->fix.accel = FB_ACCEL_NONE; |
785b93ef DA |
947 | info->fix.type_aux = 0; |
948 | ||
949 | info->fix.line_length = pitch; | |
950 | return; | |
951 | } | |
952 | EXPORT_SYMBOL(drm_fb_helper_fill_fix); | |
953 | ||
954 | void drm_fb_helper_fill_var(struct fb_info *info, struct drm_framebuffer *fb, | |
955 | uint32_t fb_width, uint32_t fb_height) | |
956 | { | |
957 | info->pseudo_palette = fb->pseudo_palette; | |
958 | info->var.xres_virtual = fb->width; | |
959 | info->var.yres_virtual = fb->height; | |
960 | info->var.bits_per_pixel = fb->bits_per_pixel; | |
961 | info->var.xoffset = 0; | |
962 | info->var.yoffset = 0; | |
963 | info->var.activate = FB_ACTIVATE_NOW; | |
964 | info->var.height = -1; | |
965 | info->var.width = -1; | |
966 | ||
967 | switch (fb->depth) { | |
968 | case 8: | |
969 | info->var.red.offset = 0; | |
970 | info->var.green.offset = 0; | |
971 | info->var.blue.offset = 0; | |
972 | info->var.red.length = 8; /* 8bit DAC */ | |
973 | info->var.green.length = 8; | |
974 | info->var.blue.length = 8; | |
975 | info->var.transp.offset = 0; | |
976 | info->var.transp.length = 0; | |
977 | break; | |
978 | case 15: | |
979 | info->var.red.offset = 10; | |
980 | info->var.green.offset = 5; | |
981 | info->var.blue.offset = 0; | |
982 | info->var.red.length = 5; | |
983 | info->var.green.length = 5; | |
984 | info->var.blue.length = 5; | |
985 | info->var.transp.offset = 15; | |
986 | info->var.transp.length = 1; | |
987 | break; | |
988 | case 16: | |
989 | info->var.red.offset = 11; | |
990 | info->var.green.offset = 5; | |
991 | info->var.blue.offset = 0; | |
992 | info->var.red.length = 5; | |
993 | info->var.green.length = 6; | |
994 | info->var.blue.length = 5; | |
995 | info->var.transp.offset = 0; | |
996 | break; | |
997 | case 24: | |
998 | info->var.red.offset = 16; | |
999 | info->var.green.offset = 8; | |
1000 | info->var.blue.offset = 0; | |
1001 | info->var.red.length = 8; | |
1002 | info->var.green.length = 8; | |
1003 | info->var.blue.length = 8; | |
1004 | info->var.transp.offset = 0; | |
1005 | info->var.transp.length = 0; | |
1006 | break; | |
1007 | case 32: | |
1008 | info->var.red.offset = 16; | |
1009 | info->var.green.offset = 8; | |
1010 | info->var.blue.offset = 0; | |
1011 | info->var.red.length = 8; | |
1012 | info->var.green.length = 8; | |
1013 | info->var.blue.length = 8; | |
1014 | info->var.transp.offset = 24; | |
1015 | info->var.transp.length = 8; | |
1016 | break; | |
1017 | default: | |
1018 | break; | |
1019 | } | |
1020 | ||
1021 | info->var.xres = fb_width; | |
1022 | info->var.yres = fb_height; | |
1023 | } | |
1024 | EXPORT_SYMBOL(drm_fb_helper_fill_var); |