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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 | 31 | #include <linux/sysrq.h> |
5a0e3ad6 | 32 | #include <linux/slab.h> |
785b93ef DA |
33 | #include <linux/fb.h> |
34 | #include "drmP.h" | |
35 | #include "drm_crtc.h" | |
36 | #include "drm_fb_helper.h" | |
37 | #include "drm_crtc_helper.h" | |
38 | ||
6fcefd56 DA |
39 | MODULE_AUTHOR("David Airlie, Jesse Barnes"); |
40 | MODULE_DESCRIPTION("DRM KMS helper"); | |
41 | MODULE_LICENSE("GPL and additional rights"); | |
42 | ||
785b93ef DA |
43 | static LIST_HEAD(kernel_fb_helper_list); |
44 | ||
d50ba256 DA |
45 | int drm_fb_helper_add_connector(struct drm_connector *connector) |
46 | { | |
47 | connector->fb_helper_private = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL); | |
48 | if (!connector->fb_helper_private) | |
49 | return -ENOMEM; | |
50 | ||
51 | return 0; | |
d50ba256 DA |
52 | } |
53 | EXPORT_SYMBOL(drm_fb_helper_add_connector); | |
54 | ||
d50ba256 DA |
55 | /** |
56 | * drm_fb_helper_connector_parse_command_line - parse command line for connector | |
57 | * @connector - connector to parse line for | |
58 | * @mode_option - per connector mode option | |
59 | * | |
60 | * This parses the connector specific then generic command lines for | |
61 | * modes and options to configure the connector. | |
62 | * | |
63 | * This uses the same parameters as the fb modedb.c, except for extra | |
64 | * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m][eDd] | |
65 | * | |
66 | * enable/enable Digital/disable bit at the end | |
67 | */ | |
68 | static bool drm_fb_helper_connector_parse_command_line(struct drm_connector *connector, | |
69 | const char *mode_option) | |
70 | { | |
71 | const char *name; | |
72 | unsigned int namelen; | |
73 | int res_specified = 0, bpp_specified = 0, refresh_specified = 0; | |
74 | unsigned int xres = 0, yres = 0, bpp = 32, refresh = 0; | |
75 | int yres_specified = 0, cvt = 0, rb = 0, interlace = 0, margins = 0; | |
76 | int i; | |
77 | enum drm_connector_force force = DRM_FORCE_UNSPECIFIED; | |
78 | struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private; | |
8ef8678c | 79 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
d50ba256 | 80 | |
8ef8678c DA |
81 | if (!fb_help_conn) |
82 | return false; | |
83 | ||
84 | cmdline_mode = &fb_help_conn->cmdline_mode; | |
d50ba256 DA |
85 | if (!mode_option) |
86 | mode_option = fb_mode_option; | |
87 | ||
88 | if (!mode_option) { | |
89 | cmdline_mode->specified = false; | |
90 | return false; | |
91 | } | |
92 | ||
93 | name = mode_option; | |
94 | namelen = strlen(name); | |
95 | for (i = namelen-1; i >= 0; i--) { | |
96 | switch (name[i]) { | |
97 | case '@': | |
98 | namelen = i; | |
99 | if (!refresh_specified && !bpp_specified && | |
100 | !yres_specified) { | |
3b40a443 | 101 | refresh = simple_strtol(&name[i+1], NULL, 10); |
d50ba256 DA |
102 | refresh_specified = 1; |
103 | if (cvt || rb) | |
104 | cvt = 0; | |
105 | } else | |
106 | goto done; | |
107 | break; | |
108 | case '-': | |
109 | namelen = i; | |
110 | if (!bpp_specified && !yres_specified) { | |
3b40a443 | 111 | bpp = simple_strtol(&name[i+1], NULL, 10); |
d50ba256 DA |
112 | bpp_specified = 1; |
113 | if (cvt || rb) | |
114 | cvt = 0; | |
115 | } else | |
116 | goto done; | |
117 | break; | |
118 | case 'x': | |
119 | if (!yres_specified) { | |
3b40a443 | 120 | yres = simple_strtol(&name[i+1], NULL, 10); |
d50ba256 DA |
121 | yres_specified = 1; |
122 | } else | |
123 | goto done; | |
124 | case '0' ... '9': | |
125 | break; | |
126 | case 'M': | |
127 | if (!yres_specified) | |
128 | cvt = 1; | |
129 | break; | |
130 | case 'R': | |
131 | if (!cvt) | |
132 | rb = 1; | |
133 | break; | |
134 | case 'm': | |
135 | if (!cvt) | |
136 | margins = 1; | |
137 | break; | |
138 | case 'i': | |
139 | if (!cvt) | |
140 | interlace = 1; | |
141 | break; | |
142 | case 'e': | |
143 | force = DRM_FORCE_ON; | |
144 | break; | |
145 | case 'D': | |
e89a8c90 | 146 | if ((connector->connector_type != DRM_MODE_CONNECTOR_DVII) && |
d50ba256 DA |
147 | (connector->connector_type != DRM_MODE_CONNECTOR_HDMIB)) |
148 | force = DRM_FORCE_ON; | |
149 | else | |
150 | force = DRM_FORCE_ON_DIGITAL; | |
151 | break; | |
152 | case 'd': | |
153 | force = DRM_FORCE_OFF; | |
154 | break; | |
155 | default: | |
156 | goto done; | |
157 | } | |
158 | } | |
159 | if (i < 0 && yres_specified) { | |
3b40a443 | 160 | xres = simple_strtol(name, NULL, 10); |
d50ba256 DA |
161 | res_specified = 1; |
162 | } | |
163 | done: | |
164 | ||
165 | DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n", | |
166 | drm_get_connector_name(connector), xres, yres, | |
167 | (refresh) ? refresh : 60, (rb) ? " reduced blanking" : | |
168 | "", (margins) ? " with margins" : "", (interlace) ? | |
169 | " interlaced" : ""); | |
170 | ||
171 | if (force) { | |
172 | const char *s; | |
173 | switch (force) { | |
174 | case DRM_FORCE_OFF: s = "OFF"; break; | |
175 | case DRM_FORCE_ON_DIGITAL: s = "ON - dig"; break; | |
176 | default: | |
177 | case DRM_FORCE_ON: s = "ON"; break; | |
178 | } | |
179 | ||
180 | DRM_INFO("forcing %s connector %s\n", | |
181 | drm_get_connector_name(connector), s); | |
182 | connector->force = force; | |
183 | } | |
184 | ||
185 | if (res_specified) { | |
186 | cmdline_mode->specified = true; | |
187 | cmdline_mode->xres = xres; | |
188 | cmdline_mode->yres = yres; | |
189 | } | |
190 | ||
191 | if (refresh_specified) { | |
192 | cmdline_mode->refresh_specified = true; | |
193 | cmdline_mode->refresh = refresh; | |
194 | } | |
195 | ||
196 | if (bpp_specified) { | |
197 | cmdline_mode->bpp_specified = true; | |
198 | cmdline_mode->bpp = bpp; | |
199 | } | |
200 | cmdline_mode->rb = rb ? true : false; | |
201 | cmdline_mode->cvt = cvt ? true : false; | |
202 | cmdline_mode->interlace = interlace ? true : false; | |
203 | ||
204 | return true; | |
205 | } | |
206 | ||
207 | int drm_fb_helper_parse_command_line(struct drm_device *dev) | |
208 | { | |
209 | struct drm_connector *connector; | |
210 | ||
211 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
212 | char *option = NULL; | |
213 | ||
214 | /* do something on return - turn off connector maybe */ | |
215 | if (fb_get_options(drm_get_connector_name(connector), &option)) | |
216 | continue; | |
217 | ||
218 | drm_fb_helper_connector_parse_command_line(connector, option); | |
219 | } | |
220 | return 0; | |
221 | } | |
222 | ||
785b93ef DA |
223 | bool drm_fb_helper_force_kernel_mode(void) |
224 | { | |
225 | int i = 0; | |
226 | bool ret, error = false; | |
227 | struct drm_fb_helper *helper; | |
228 | ||
229 | if (list_empty(&kernel_fb_helper_list)) | |
230 | return false; | |
231 | ||
232 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { | |
233 | for (i = 0; i < helper->crtc_count; i++) { | |
234 | struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set; | |
235 | ret = drm_crtc_helper_set_config(mode_set); | |
236 | if (ret) | |
237 | error = true; | |
238 | } | |
239 | } | |
240 | return error; | |
241 | } | |
242 | ||
243 | int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed, | |
244 | void *panic_str) | |
245 | { | |
246 | DRM_ERROR("panic occurred, switching back to text console\n"); | |
247 | return drm_fb_helper_force_kernel_mode(); | |
248 | return 0; | |
249 | } | |
250 | EXPORT_SYMBOL(drm_fb_helper_panic); | |
251 | ||
252 | static struct notifier_block paniced = { | |
253 | .notifier_call = drm_fb_helper_panic, | |
254 | }; | |
255 | ||
256 | /** | |
257 | * drm_fb_helper_restore - restore the framebuffer console (kernel) config | |
258 | * | |
259 | * Restore's the kernel's fbcon mode, used for lastclose & panic paths. | |
260 | */ | |
261 | void drm_fb_helper_restore(void) | |
262 | { | |
263 | bool ret; | |
264 | ret = drm_fb_helper_force_kernel_mode(); | |
265 | if (ret == true) | |
266 | DRM_ERROR("Failed to restore crtc configuration\n"); | |
267 | } | |
268 | EXPORT_SYMBOL(drm_fb_helper_restore); | |
269 | ||
bea1d35b | 270 | #ifdef CONFIG_MAGIC_SYSRQ |
785b93ef DA |
271 | static void drm_fb_helper_restore_work_fn(struct work_struct *ignored) |
272 | { | |
273 | drm_fb_helper_restore(); | |
274 | } | |
275 | static DECLARE_WORK(drm_fb_helper_restore_work, drm_fb_helper_restore_work_fn); | |
276 | ||
277 | static void drm_fb_helper_sysrq(int dummy1, struct tty_struct *dummy3) | |
278 | { | |
279 | schedule_work(&drm_fb_helper_restore_work); | |
280 | } | |
281 | ||
282 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { | |
283 | .handler = drm_fb_helper_sysrq, | |
284 | .help_msg = "force-fb(V)", | |
285 | .action_msg = "Restore framebuffer console", | |
286 | }; | |
bea1d35b | 287 | #endif |
785b93ef DA |
288 | |
289 | static void drm_fb_helper_on(struct fb_info *info) | |
290 | { | |
291 | struct drm_fb_helper *fb_helper = info->par; | |
292 | struct drm_device *dev = fb_helper->dev; | |
293 | struct drm_crtc *crtc; | |
294 | struct drm_encoder *encoder; | |
295 | int i; | |
296 | ||
297 | /* | |
298 | * For each CRTC in this fb, turn the crtc on then, | |
299 | * find all associated encoders and turn them on. | |
300 | */ | |
e87b2c42 JB |
301 | for (i = 0; i < fb_helper->crtc_count; i++) { |
302 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
303 | struct drm_crtc_helper_funcs *crtc_funcs = | |
304 | crtc->helper_private; | |
785b93ef | 305 | |
e87b2c42 JB |
306 | /* Only mess with CRTCs in this fb */ |
307 | if (crtc->base.id != fb_helper->crtc_info[i].crtc_id || | |
308 | !crtc->enabled) | |
309 | continue; | |
785b93ef | 310 | |
e87b2c42 JB |
311 | mutex_lock(&dev->mode_config.mutex); |
312 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); | |
313 | mutex_unlock(&dev->mode_config.mutex); | |
785b93ef | 314 | |
e87b2c42 JB |
315 | /* Found a CRTC on this fb, now find encoders */ |
316 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
317 | if (encoder->crtc == crtc) { | |
318 | struct drm_encoder_helper_funcs *encoder_funcs; | |
785b93ef | 319 | |
e87b2c42 JB |
320 | encoder_funcs = encoder->helper_private; |
321 | mutex_lock(&dev->mode_config.mutex); | |
322 | encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); | |
323 | mutex_unlock(&dev->mode_config.mutex); | |
324 | } | |
785b93ef DA |
325 | } |
326 | } | |
327 | } | |
328 | } | |
329 | ||
330 | static void drm_fb_helper_off(struct fb_info *info, int dpms_mode) | |
331 | { | |
332 | struct drm_fb_helper *fb_helper = info->par; | |
333 | struct drm_device *dev = fb_helper->dev; | |
334 | struct drm_crtc *crtc; | |
335 | struct drm_encoder *encoder; | |
336 | int i; | |
337 | ||
338 | /* | |
339 | * For each CRTC in this fb, find all associated encoders | |
340 | * and turn them off, then turn off the CRTC. | |
341 | */ | |
e87b2c42 JB |
342 | for (i = 0; i < fb_helper->crtc_count; i++) { |
343 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
344 | struct drm_crtc_helper_funcs *crtc_funcs = | |
345 | crtc->helper_private; | |
346 | ||
347 | /* Only mess with CRTCs in this fb */ | |
348 | if (crtc->base.id != fb_helper->crtc_info[i].crtc_id || | |
349 | !crtc->enabled) | |
350 | continue; | |
351 | ||
352 | /* Found a CRTC on this fb, now find encoders */ | |
353 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
354 | if (encoder->crtc == crtc) { | |
355 | struct drm_encoder_helper_funcs *encoder_funcs; | |
356 | ||
357 | encoder_funcs = encoder->helper_private; | |
358 | mutex_lock(&dev->mode_config.mutex); | |
359 | encoder_funcs->dpms(encoder, dpms_mode); | |
360 | mutex_unlock(&dev->mode_config.mutex); | |
361 | } | |
362 | } | |
731b5a15 JS |
363 | mutex_lock(&dev->mode_config.mutex); |
364 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF); | |
365 | mutex_unlock(&dev->mode_config.mutex); | |
785b93ef | 366 | } |
785b93ef DA |
367 | } |
368 | } | |
369 | ||
370 | int drm_fb_helper_blank(int blank, struct fb_info *info) | |
371 | { | |
372 | switch (blank) { | |
731b5a15 | 373 | /* Display: On; HSync: On, VSync: On */ |
785b93ef DA |
374 | case FB_BLANK_UNBLANK: |
375 | drm_fb_helper_on(info); | |
376 | break; | |
731b5a15 | 377 | /* Display: Off; HSync: On, VSync: On */ |
785b93ef | 378 | case FB_BLANK_NORMAL: |
5fd4df4d | 379 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); |
785b93ef | 380 | break; |
731b5a15 | 381 | /* Display: Off; HSync: Off, VSync: On */ |
785b93ef DA |
382 | case FB_BLANK_HSYNC_SUSPEND: |
383 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); | |
384 | break; | |
731b5a15 | 385 | /* Display: Off; HSync: On, VSync: Off */ |
785b93ef DA |
386 | case FB_BLANK_VSYNC_SUSPEND: |
387 | drm_fb_helper_off(info, DRM_MODE_DPMS_SUSPEND); | |
388 | break; | |
731b5a15 | 389 | /* Display: Off; HSync: Off, VSync: Off */ |
785b93ef DA |
390 | case FB_BLANK_POWERDOWN: |
391 | drm_fb_helper_off(info, DRM_MODE_DPMS_OFF); | |
392 | break; | |
393 | } | |
394 | return 0; | |
395 | } | |
396 | EXPORT_SYMBOL(drm_fb_helper_blank); | |
397 | ||
398 | static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) | |
399 | { | |
400 | int i; | |
401 | ||
402 | for (i = 0; i < helper->crtc_count; i++) | |
403 | kfree(helper->crtc_info[i].mode_set.connectors); | |
404 | kfree(helper->crtc_info); | |
405 | } | |
406 | ||
407 | int drm_fb_helper_init_crtc_count(struct drm_fb_helper *helper, int crtc_count, int max_conn_count) | |
408 | { | |
409 | struct drm_device *dev = helper->dev; | |
410 | struct drm_crtc *crtc; | |
411 | int ret = 0; | |
412 | int i; | |
413 | ||
414 | helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL); | |
415 | if (!helper->crtc_info) | |
416 | return -ENOMEM; | |
417 | ||
418 | helper->crtc_count = crtc_count; | |
419 | ||
420 | for (i = 0; i < crtc_count; i++) { | |
421 | helper->crtc_info[i].mode_set.connectors = | |
422 | kcalloc(max_conn_count, | |
423 | sizeof(struct drm_connector *), | |
424 | GFP_KERNEL); | |
425 | ||
426 | if (!helper->crtc_info[i].mode_set.connectors) { | |
427 | ret = -ENOMEM; | |
428 | goto out_free; | |
429 | } | |
430 | helper->crtc_info[i].mode_set.num_connectors = 0; | |
431 | } | |
432 | ||
433 | i = 0; | |
434 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
435 | helper->crtc_info[i].crtc_id = crtc->base.id; | |
436 | helper->crtc_info[i].mode_set.crtc = crtc; | |
437 | i++; | |
438 | } | |
439 | helper->conn_limit = max_conn_count; | |
440 | return 0; | |
441 | out_free: | |
442 | drm_fb_helper_crtc_free(helper); | |
443 | return -ENOMEM; | |
444 | } | |
445 | EXPORT_SYMBOL(drm_fb_helper_init_crtc_count); | |
446 | ||
c850cb78 | 447 | static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, |
b8c00ac5 DA |
448 | u16 blue, u16 regno, struct fb_info *info) |
449 | { | |
450 | struct drm_fb_helper *fb_helper = info->par; | |
451 | struct drm_framebuffer *fb = fb_helper->fb; | |
452 | int pindex; | |
453 | ||
c850cb78 DA |
454 | if (info->fix.visual == FB_VISUAL_TRUECOLOR) { |
455 | u32 *palette; | |
456 | u32 value; | |
457 | /* place color in psuedopalette */ | |
458 | if (regno > 16) | |
459 | return -EINVAL; | |
460 | palette = (u32 *)info->pseudo_palette; | |
461 | red >>= (16 - info->var.red.length); | |
462 | green >>= (16 - info->var.green.length); | |
463 | blue >>= (16 - info->var.blue.length); | |
464 | value = (red << info->var.red.offset) | | |
465 | (green << info->var.green.offset) | | |
466 | (blue << info->var.blue.offset); | |
467 | palette[regno] = value; | |
468 | return 0; | |
469 | } | |
470 | ||
b8c00ac5 DA |
471 | pindex = regno; |
472 | ||
473 | if (fb->bits_per_pixel == 16) { | |
474 | pindex = regno << 3; | |
475 | ||
476 | if (fb->depth == 16 && regno > 63) | |
c850cb78 | 477 | return -EINVAL; |
b8c00ac5 | 478 | if (fb->depth == 15 && regno > 31) |
c850cb78 | 479 | return -EINVAL; |
b8c00ac5 DA |
480 | |
481 | if (fb->depth == 16) { | |
482 | u16 r, g, b; | |
483 | int i; | |
484 | if (regno < 32) { | |
485 | for (i = 0; i < 8; i++) | |
486 | fb_helper->funcs->gamma_set(crtc, red, | |
487 | green, blue, pindex + i); | |
488 | } | |
489 | ||
490 | fb_helper->funcs->gamma_get(crtc, &r, | |
491 | &g, &b, | |
492 | pindex >> 1); | |
493 | ||
494 | for (i = 0; i < 4; i++) | |
495 | fb_helper->funcs->gamma_set(crtc, r, | |
496 | green, b, | |
497 | (pindex >> 1) + i); | |
498 | } | |
499 | } | |
500 | ||
501 | if (fb->depth != 16) | |
502 | fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex); | |
c850cb78 | 503 | return 0; |
b8c00ac5 DA |
504 | } |
505 | ||
068143d3 DA |
506 | int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) |
507 | { | |
508 | struct drm_fb_helper *fb_helper = info->par; | |
509 | struct drm_device *dev = fb_helper->dev; | |
510 | u16 *red, *green, *blue, *transp; | |
511 | struct drm_crtc *crtc; | |
512 | int i, rc = 0; | |
513 | int start; | |
514 | ||
515 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
516 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
517 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
518 | if (crtc->base.id == fb_helper->crtc_info[i].crtc_id) | |
519 | break; | |
520 | } | |
521 | if (i == fb_helper->crtc_count) | |
522 | continue; | |
523 | ||
524 | red = cmap->red; | |
525 | green = cmap->green; | |
526 | blue = cmap->blue; | |
527 | transp = cmap->transp; | |
528 | start = cmap->start; | |
529 | ||
530 | for (i = 0; i < cmap->len; i++) { | |
531 | u16 hred, hgreen, hblue, htransp = 0xffff; | |
532 | ||
533 | hred = *red++; | |
534 | hgreen = *green++; | |
535 | hblue = *blue++; | |
536 | ||
537 | if (transp) | |
538 | htransp = *transp++; | |
539 | ||
c850cb78 DA |
540 | rc = setcolreg(crtc, hred, hgreen, hblue, start++, info); |
541 | if (rc) | |
542 | return rc; | |
068143d3 DA |
543 | } |
544 | crtc_funcs->load_lut(crtc); | |
545 | } | |
546 | return rc; | |
547 | } | |
548 | EXPORT_SYMBOL(drm_fb_helper_setcmap); | |
549 | ||
785b93ef DA |
550 | int drm_fb_helper_setcolreg(unsigned regno, |
551 | unsigned red, | |
552 | unsigned green, | |
553 | unsigned blue, | |
554 | unsigned transp, | |
555 | struct fb_info *info) | |
556 | { | |
557 | struct drm_fb_helper *fb_helper = info->par; | |
558 | struct drm_device *dev = fb_helper->dev; | |
559 | struct drm_crtc *crtc; | |
560 | int i; | |
c850cb78 | 561 | int ret; |
785b93ef | 562 | |
b8c00ac5 DA |
563 | if (regno > 255) |
564 | return 1; | |
785b93ef | 565 | |
b8c00ac5 DA |
566 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
567 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
785b93ef DA |
568 | for (i = 0; i < fb_helper->crtc_count; i++) { |
569 | if (crtc->base.id == fb_helper->crtc_info[i].crtc_id) | |
570 | break; | |
571 | } | |
572 | if (i == fb_helper->crtc_count) | |
573 | continue; | |
574 | ||
c850cb78 DA |
575 | ret = setcolreg(crtc, red, green, blue, regno, info); |
576 | if (ret) | |
577 | return ret; | |
785b93ef | 578 | |
b8c00ac5 | 579 | crtc_funcs->load_lut(crtc); |
785b93ef DA |
580 | } |
581 | return 0; | |
582 | } | |
583 | EXPORT_SYMBOL(drm_fb_helper_setcolreg); | |
584 | ||
585 | int drm_fb_helper_check_var(struct fb_var_screeninfo *var, | |
586 | struct fb_info *info) | |
587 | { | |
588 | struct drm_fb_helper *fb_helper = info->par; | |
589 | struct drm_framebuffer *fb = fb_helper->fb; | |
590 | int depth; | |
591 | ||
5349ef31 | 592 | if (var->pixclock != 0) |
785b93ef DA |
593 | return -EINVAL; |
594 | ||
595 | /* Need to resize the fb object !!! */ | |
509c7d83 DA |
596 | if (var->bits_per_pixel > fb->bits_per_pixel || var->xres > fb->width || var->yres > fb->height) { |
597 | DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb " | |
598 | "object %dx%d-%d > %dx%d-%d\n", var->xres, var->yres, var->bits_per_pixel, | |
599 | fb->width, fb->height, fb->bits_per_pixel); | |
785b93ef DA |
600 | return -EINVAL; |
601 | } | |
602 | ||
603 | switch (var->bits_per_pixel) { | |
604 | case 16: | |
605 | depth = (var->green.length == 6) ? 16 : 15; | |
606 | break; | |
607 | case 32: | |
608 | depth = (var->transp.length > 0) ? 32 : 24; | |
609 | break; | |
610 | default: | |
611 | depth = var->bits_per_pixel; | |
612 | break; | |
613 | } | |
614 | ||
615 | switch (depth) { | |
616 | case 8: | |
617 | var->red.offset = 0; | |
618 | var->green.offset = 0; | |
619 | var->blue.offset = 0; | |
620 | var->red.length = 8; | |
621 | var->green.length = 8; | |
622 | var->blue.length = 8; | |
623 | var->transp.length = 0; | |
624 | var->transp.offset = 0; | |
625 | break; | |
626 | case 15: | |
627 | var->red.offset = 10; | |
628 | var->green.offset = 5; | |
629 | var->blue.offset = 0; | |
630 | var->red.length = 5; | |
631 | var->green.length = 5; | |
632 | var->blue.length = 5; | |
633 | var->transp.length = 1; | |
634 | var->transp.offset = 15; | |
635 | break; | |
636 | case 16: | |
637 | var->red.offset = 11; | |
638 | var->green.offset = 5; | |
639 | var->blue.offset = 0; | |
640 | var->red.length = 5; | |
641 | var->green.length = 6; | |
642 | var->blue.length = 5; | |
643 | var->transp.length = 0; | |
644 | var->transp.offset = 0; | |
645 | break; | |
646 | case 24: | |
647 | var->red.offset = 16; | |
648 | var->green.offset = 8; | |
649 | var->blue.offset = 0; | |
650 | var->red.length = 8; | |
651 | var->green.length = 8; | |
652 | var->blue.length = 8; | |
653 | var->transp.length = 0; | |
654 | var->transp.offset = 0; | |
655 | break; | |
656 | case 32: | |
657 | var->red.offset = 16; | |
658 | var->green.offset = 8; | |
659 | var->blue.offset = 0; | |
660 | var->red.length = 8; | |
661 | var->green.length = 8; | |
662 | var->blue.length = 8; | |
663 | var->transp.length = 8; | |
664 | var->transp.offset = 24; | |
665 | break; | |
666 | default: | |
667 | return -EINVAL; | |
668 | } | |
669 | return 0; | |
670 | } | |
671 | EXPORT_SYMBOL(drm_fb_helper_check_var); | |
672 | ||
673 | /* this will let fbcon do the mode init */ | |
674 | int drm_fb_helper_set_par(struct fb_info *info) | |
675 | { | |
676 | struct drm_fb_helper *fb_helper = info->par; | |
677 | struct drm_device *dev = fb_helper->dev; | |
678 | struct fb_var_screeninfo *var = &info->var; | |
679 | struct drm_crtc *crtc; | |
680 | int ret; | |
681 | int i; | |
682 | ||
5349ef31 | 683 | if (var->pixclock != 0) { |
172e91f5 | 684 | DRM_ERROR("PIXEL CLOCK SET\n"); |
785b93ef DA |
685 | return -EINVAL; |
686 | } | |
687 | ||
688 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
689 | ||
690 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
691 | if (crtc->base.id == fb_helper->crtc_info[i].crtc_id) | |
692 | break; | |
693 | } | |
694 | if (i == fb_helper->crtc_count) | |
695 | continue; | |
696 | ||
697 | if (crtc->fb == fb_helper->crtc_info[i].mode_set.fb) { | |
698 | mutex_lock(&dev->mode_config.mutex); | |
a2d49ae7 | 699 | ret = crtc->funcs->set_config(&fb_helper->crtc_info[i].mode_set); |
785b93ef DA |
700 | mutex_unlock(&dev->mode_config.mutex); |
701 | if (ret) | |
702 | return ret; | |
703 | } | |
704 | } | |
705 | return 0; | |
706 | } | |
707 | EXPORT_SYMBOL(drm_fb_helper_set_par); | |
708 | ||
709 | int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, | |
710 | struct fb_info *info) | |
711 | { | |
712 | struct drm_fb_helper *fb_helper = info->par; | |
713 | struct drm_device *dev = fb_helper->dev; | |
714 | struct drm_mode_set *modeset; | |
715 | struct drm_crtc *crtc; | |
716 | int ret = 0; | |
717 | int i; | |
718 | ||
719 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
720 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
721 | if (crtc->base.id == fb_helper->crtc_info[i].crtc_id) | |
722 | break; | |
723 | } | |
724 | ||
725 | if (i == fb_helper->crtc_count) | |
726 | continue; | |
727 | ||
728 | modeset = &fb_helper->crtc_info[i].mode_set; | |
729 | ||
730 | modeset->x = var->xoffset; | |
731 | modeset->y = var->yoffset; | |
732 | ||
733 | if (modeset->num_connectors) { | |
734 | mutex_lock(&dev->mode_config.mutex); | |
735 | ret = crtc->funcs->set_config(modeset); | |
736 | mutex_unlock(&dev->mode_config.mutex); | |
737 | if (!ret) { | |
738 | info->var.xoffset = var->xoffset; | |
739 | info->var.yoffset = var->yoffset; | |
740 | } | |
741 | } | |
742 | } | |
743 | return ret; | |
744 | } | |
745 | EXPORT_SYMBOL(drm_fb_helper_pan_display); | |
746 | ||
747 | int drm_fb_helper_single_fb_probe(struct drm_device *dev, | |
b8c00ac5 | 748 | int preferred_bpp, |
785b93ef DA |
749 | int (*fb_create)(struct drm_device *dev, |
750 | uint32_t fb_width, | |
751 | uint32_t fb_height, | |
752 | uint32_t surface_width, | |
753 | uint32_t surface_height, | |
d50ba256 DA |
754 | uint32_t surface_depth, |
755 | uint32_t surface_bpp, | |
785b93ef DA |
756 | struct drm_framebuffer **fb_ptr)) |
757 | { | |
758 | struct drm_crtc *crtc; | |
759 | struct drm_connector *connector; | |
760 | unsigned int fb_width = (unsigned)-1, fb_height = (unsigned)-1; | |
761 | unsigned int surface_width = 0, surface_height = 0; | |
762 | int new_fb = 0; | |
763 | int crtc_count = 0; | |
764 | int ret, i, conn_count = 0; | |
765 | struct fb_info *info; | |
766 | struct drm_framebuffer *fb; | |
767 | struct drm_mode_set *modeset = NULL; | |
768 | struct drm_fb_helper *fb_helper; | |
d50ba256 | 769 | uint32_t surface_depth = 24, surface_bpp = 32; |
785b93ef | 770 | |
b8c00ac5 DA |
771 | /* if driver picks 8 or 16 by default use that |
772 | for both depth/bpp */ | |
773 | if (preferred_bpp != surface_bpp) { | |
774 | surface_depth = surface_bpp = preferred_bpp; | |
775 | } | |
785b93ef | 776 | /* first up get a count of crtcs now in use and new min/maxes width/heights */ |
d50ba256 DA |
777 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
778 | struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private; | |
8ef8678c DA |
779 | |
780 | struct drm_fb_helper_cmdline_mode *cmdline_mode; | |
781 | ||
782 | if (!fb_help_conn) | |
783 | continue; | |
784 | ||
785 | cmdline_mode = &fb_help_conn->cmdline_mode; | |
d50ba256 DA |
786 | |
787 | if (cmdline_mode->bpp_specified) { | |
788 | switch (cmdline_mode->bpp) { | |
789 | case 8: | |
790 | surface_depth = surface_bpp = 8; | |
791 | break; | |
792 | case 15: | |
793 | surface_depth = 15; | |
794 | surface_bpp = 16; | |
795 | break; | |
796 | case 16: | |
797 | surface_depth = surface_bpp = 16; | |
798 | break; | |
799 | case 24: | |
800 | surface_depth = surface_bpp = 24; | |
801 | break; | |
802 | case 32: | |
803 | surface_depth = 24; | |
804 | surface_bpp = 32; | |
805 | break; | |
806 | } | |
807 | break; | |
808 | } | |
809 | } | |
810 | ||
785b93ef DA |
811 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
812 | if (drm_helper_crtc_in_use(crtc)) { | |
813 | if (crtc->desired_mode) { | |
814 | if (crtc->desired_mode->hdisplay < fb_width) | |
815 | fb_width = crtc->desired_mode->hdisplay; | |
816 | ||
817 | if (crtc->desired_mode->vdisplay < fb_height) | |
818 | fb_height = crtc->desired_mode->vdisplay; | |
819 | ||
820 | if (crtc->desired_mode->hdisplay > surface_width) | |
821 | surface_width = crtc->desired_mode->hdisplay; | |
822 | ||
823 | if (crtc->desired_mode->vdisplay > surface_height) | |
824 | surface_height = crtc->desired_mode->vdisplay; | |
825 | } | |
826 | crtc_count++; | |
827 | } | |
828 | } | |
829 | ||
830 | if (crtc_count == 0 || fb_width == -1 || fb_height == -1) { | |
831 | /* hmm everyone went away - assume VGA cable just fell out | |
832 | and will come back later. */ | |
833 | return 0; | |
834 | } | |
835 | ||
836 | /* do we have an fb already? */ | |
837 | if (list_empty(&dev->mode_config.fb_kernel_list)) { | |
838 | ret = (*fb_create)(dev, fb_width, fb_height, surface_width, | |
d50ba256 DA |
839 | surface_height, surface_depth, surface_bpp, |
840 | &fb); | |
785b93ef DA |
841 | if (ret) |
842 | return -EINVAL; | |
843 | new_fb = 1; | |
844 | } else { | |
845 | fb = list_first_entry(&dev->mode_config.fb_kernel_list, | |
846 | struct drm_framebuffer, filp_head); | |
847 | ||
848 | /* if someone hotplugs something bigger than we have already allocated, we are pwned. | |
849 | As really we can't resize an fbdev that is in the wild currently due to fbdev | |
850 | not really being designed for the lower layers moving stuff around under it. | |
851 | - so in the grand style of things - punt. */ | |
852 | if ((fb->width < surface_width) || | |
853 | (fb->height < surface_height)) { | |
854 | DRM_ERROR("Framebuffer not large enough to scale console onto.\n"); | |
855 | return -EINVAL; | |
856 | } | |
857 | } | |
858 | ||
859 | info = fb->fbdev; | |
860 | fb_helper = info->par; | |
861 | ||
862 | crtc_count = 0; | |
863 | /* okay we need to setup new connector sets in the crtcs */ | |
864 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
865 | modeset = &fb_helper->crtc_info[crtc_count].mode_set; | |
866 | modeset->fb = fb; | |
867 | conn_count = 0; | |
868 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
869 | if (connector->encoder) | |
870 | if (connector->encoder->crtc == modeset->crtc) { | |
871 | modeset->connectors[conn_count] = connector; | |
872 | conn_count++; | |
873 | if (conn_count > fb_helper->conn_limit) | |
874 | BUG(); | |
875 | } | |
876 | } | |
877 | ||
878 | for (i = conn_count; i < fb_helper->conn_limit; i++) | |
879 | modeset->connectors[i] = NULL; | |
880 | ||
881 | modeset->crtc = crtc; | |
882 | crtc_count++; | |
883 | ||
884 | modeset->num_connectors = conn_count; | |
885 | if (modeset->crtc->desired_mode) { | |
886 | if (modeset->mode) | |
887 | drm_mode_destroy(dev, modeset->mode); | |
888 | modeset->mode = drm_mode_duplicate(dev, | |
889 | modeset->crtc->desired_mode); | |
890 | } | |
891 | } | |
892 | fb_helper->crtc_count = crtc_count; | |
893 | fb_helper->fb = fb; | |
894 | ||
895 | if (new_fb) { | |
5349ef31 | 896 | info->var.pixclock = 0; |
b0a007dc | 897 | ret = fb_alloc_cmap(&info->cmap, modeset->crtc->gamma_size, 0); |
3bea21b6 CL |
898 | if (ret) |
899 | return ret; | |
900 | if (register_framebuffer(info) < 0) { | |
901 | fb_dealloc_cmap(&info->cmap); | |
785b93ef | 902 | return -EINVAL; |
3bea21b6 | 903 | } |
785b93ef DA |
904 | } else { |
905 | drm_fb_helper_set_par(info); | |
906 | } | |
907 | printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, | |
908 | info->fix.id); | |
909 | ||
910 | /* Switch back to kernel console on panic */ | |
911 | /* multi card linked list maybe */ | |
912 | if (list_empty(&kernel_fb_helper_list)) { | |
913 | printk(KERN_INFO "registered panic notifier\n"); | |
914 | atomic_notifier_chain_register(&panic_notifier_list, | |
915 | &paniced); | |
916 | register_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
917 | } | |
918 | list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list); | |
919 | return 0; | |
920 | } | |
921 | EXPORT_SYMBOL(drm_fb_helper_single_fb_probe); | |
922 | ||
923 | void drm_fb_helper_free(struct drm_fb_helper *helper) | |
924 | { | |
925 | list_del(&helper->kernel_fb_list); | |
926 | if (list_empty(&kernel_fb_helper_list)) { | |
927 | printk(KERN_INFO "unregistered panic notifier\n"); | |
928 | atomic_notifier_chain_unregister(&panic_notifier_list, | |
929 | &paniced); | |
930 | unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
931 | } | |
932 | drm_fb_helper_crtc_free(helper); | |
3bea21b6 | 933 | fb_dealloc_cmap(&helper->fb->fbdev->cmap); |
785b93ef DA |
934 | } |
935 | EXPORT_SYMBOL(drm_fb_helper_free); | |
936 | ||
068143d3 DA |
937 | void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, |
938 | uint32_t depth) | |
785b93ef DA |
939 | { |
940 | info->fix.type = FB_TYPE_PACKED_PIXELS; | |
068143d3 | 941 | info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR : |
c850cb78 | 942 | FB_VISUAL_TRUECOLOR; |
785b93ef DA |
943 | info->fix.type_aux = 0; |
944 | info->fix.xpanstep = 1; /* doing it in hw */ | |
945 | info->fix.ypanstep = 1; /* doing it in hw */ | |
946 | info->fix.ywrapstep = 0; | |
3420e742 | 947 | info->fix.accel = FB_ACCEL_NONE; |
785b93ef DA |
948 | info->fix.type_aux = 0; |
949 | ||
950 | info->fix.line_length = pitch; | |
951 | return; | |
952 | } | |
953 | EXPORT_SYMBOL(drm_fb_helper_fill_fix); | |
954 | ||
955 | void drm_fb_helper_fill_var(struct fb_info *info, struct drm_framebuffer *fb, | |
956 | uint32_t fb_width, uint32_t fb_height) | |
957 | { | |
958 | info->pseudo_palette = fb->pseudo_palette; | |
959 | info->var.xres_virtual = fb->width; | |
960 | info->var.yres_virtual = fb->height; | |
961 | info->var.bits_per_pixel = fb->bits_per_pixel; | |
962 | info->var.xoffset = 0; | |
963 | info->var.yoffset = 0; | |
964 | info->var.activate = FB_ACTIVATE_NOW; | |
965 | info->var.height = -1; | |
966 | info->var.width = -1; | |
967 | ||
968 | switch (fb->depth) { | |
969 | case 8: | |
970 | info->var.red.offset = 0; | |
971 | info->var.green.offset = 0; | |
972 | info->var.blue.offset = 0; | |
973 | info->var.red.length = 8; /* 8bit DAC */ | |
974 | info->var.green.length = 8; | |
975 | info->var.blue.length = 8; | |
976 | info->var.transp.offset = 0; | |
977 | info->var.transp.length = 0; | |
978 | break; | |
979 | case 15: | |
980 | info->var.red.offset = 10; | |
981 | info->var.green.offset = 5; | |
982 | info->var.blue.offset = 0; | |
983 | info->var.red.length = 5; | |
984 | info->var.green.length = 5; | |
985 | info->var.blue.length = 5; | |
986 | info->var.transp.offset = 15; | |
987 | info->var.transp.length = 1; | |
988 | break; | |
989 | case 16: | |
990 | info->var.red.offset = 11; | |
991 | info->var.green.offset = 5; | |
992 | info->var.blue.offset = 0; | |
993 | info->var.red.length = 5; | |
994 | info->var.green.length = 6; | |
995 | info->var.blue.length = 5; | |
996 | info->var.transp.offset = 0; | |
997 | break; | |
998 | case 24: | |
999 | info->var.red.offset = 16; | |
1000 | info->var.green.offset = 8; | |
1001 | info->var.blue.offset = 0; | |
1002 | info->var.red.length = 8; | |
1003 | info->var.green.length = 8; | |
1004 | info->var.blue.length = 8; | |
1005 | info->var.transp.offset = 0; | |
1006 | info->var.transp.length = 0; | |
1007 | break; | |
1008 | case 32: | |
1009 | info->var.red.offset = 16; | |
1010 | info->var.green.offset = 8; | |
1011 | info->var.blue.offset = 0; | |
1012 | info->var.red.length = 8; | |
1013 | info->var.green.length = 8; | |
1014 | info->var.blue.length = 8; | |
1015 | info->var.transp.offset = 24; | |
1016 | info->var.transp.length = 8; | |
1017 | break; | |
1018 | default: | |
1019 | break; | |
1020 | } | |
1021 | ||
1022 | info->var.xres = fb_width; | |
1023 | info->var.yres = fb_height; | |
1024 | } | |
1025 | EXPORT_SYMBOL(drm_fb_helper_fill_var); |