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Commit | Line | Data |
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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 | ||
0b4c0f3f DA |
45 | /* simple single crtc case helper function */ |
46 | int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper) | |
d50ba256 | 47 | { |
0b4c0f3f DA |
48 | struct drm_device *dev = fb_helper->dev; |
49 | struct drm_connector *connector; | |
50 | int i; | |
d50ba256 | 51 | |
0b4c0f3f DA |
52 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
53 | struct drm_fb_helper_connector *fb_helper_connector; | |
54 | ||
55 | fb_helper_connector = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL); | |
56 | if (!fb_helper_connector) | |
57 | goto fail; | |
d50ba256 | 58 | |
0b4c0f3f DA |
59 | fb_helper_connector->connector = connector; |
60 | fb_helper->connector_info[fb_helper->connector_count++] = fb_helper_connector; | |
61 | } | |
d50ba256 | 62 | return 0; |
0b4c0f3f DA |
63 | fail: |
64 | for (i = 0; i < fb_helper->connector_count; i++) { | |
65 | kfree(fb_helper->connector_info[i]); | |
66 | fb_helper->connector_info[i] = NULL; | |
67 | } | |
68 | fb_helper->connector_count = 0; | |
69 | return -ENOMEM; | |
d50ba256 | 70 | } |
0b4c0f3f | 71 | EXPORT_SYMBOL(drm_fb_helper_single_add_all_connectors); |
d50ba256 | 72 | |
d50ba256 DA |
73 | /** |
74 | * drm_fb_helper_connector_parse_command_line - parse command line for connector | |
75 | * @connector - connector to parse line for | |
76 | * @mode_option - per connector mode option | |
77 | * | |
78 | * This parses the connector specific then generic command lines for | |
79 | * modes and options to configure the connector. | |
80 | * | |
81 | * This uses the same parameters as the fb modedb.c, except for extra | |
82 | * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m][eDd] | |
83 | * | |
84 | * enable/enable Digital/disable bit at the end | |
85 | */ | |
0b4c0f3f | 86 | static bool drm_fb_helper_connector_parse_command_line(struct drm_fb_helper_connector *fb_helper_conn, |
d50ba256 DA |
87 | const char *mode_option) |
88 | { | |
89 | const char *name; | |
90 | unsigned int namelen; | |
91 | int res_specified = 0, bpp_specified = 0, refresh_specified = 0; | |
92 | unsigned int xres = 0, yres = 0, bpp = 32, refresh = 0; | |
93 | int yres_specified = 0, cvt = 0, rb = 0, interlace = 0, margins = 0; | |
94 | int i; | |
95 | enum drm_connector_force force = DRM_FORCE_UNSPECIFIED; | |
8ef8678c | 96 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
0b4c0f3f | 97 | struct drm_connector *connector = fb_helper_conn->connector; |
d50ba256 | 98 | |
0b4c0f3f | 99 | if (!fb_helper_conn) |
8ef8678c DA |
100 | return false; |
101 | ||
0b4c0f3f | 102 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
d50ba256 DA |
103 | if (!mode_option) |
104 | mode_option = fb_mode_option; | |
105 | ||
106 | if (!mode_option) { | |
107 | cmdline_mode->specified = false; | |
108 | return false; | |
109 | } | |
110 | ||
111 | name = mode_option; | |
112 | namelen = strlen(name); | |
113 | for (i = namelen-1; i >= 0; i--) { | |
114 | switch (name[i]) { | |
115 | case '@': | |
116 | namelen = i; | |
117 | if (!refresh_specified && !bpp_specified && | |
118 | !yres_specified) { | |
3b40a443 | 119 | refresh = simple_strtol(&name[i+1], NULL, 10); |
d50ba256 DA |
120 | refresh_specified = 1; |
121 | if (cvt || rb) | |
122 | cvt = 0; | |
123 | } else | |
124 | goto done; | |
125 | break; | |
126 | case '-': | |
127 | namelen = i; | |
128 | if (!bpp_specified && !yres_specified) { | |
3b40a443 | 129 | bpp = simple_strtol(&name[i+1], NULL, 10); |
d50ba256 DA |
130 | bpp_specified = 1; |
131 | if (cvt || rb) | |
132 | cvt = 0; | |
133 | } else | |
134 | goto done; | |
135 | break; | |
136 | case 'x': | |
137 | if (!yres_specified) { | |
3b40a443 | 138 | yres = simple_strtol(&name[i+1], NULL, 10); |
d50ba256 DA |
139 | yres_specified = 1; |
140 | } else | |
141 | goto done; | |
142 | case '0' ... '9': | |
143 | break; | |
144 | case 'M': | |
145 | if (!yres_specified) | |
146 | cvt = 1; | |
147 | break; | |
148 | case 'R': | |
b829e011 | 149 | if (cvt) |
d50ba256 DA |
150 | rb = 1; |
151 | break; | |
152 | case 'm': | |
153 | if (!cvt) | |
154 | margins = 1; | |
155 | break; | |
156 | case 'i': | |
157 | if (!cvt) | |
158 | interlace = 1; | |
159 | break; | |
160 | case 'e': | |
161 | force = DRM_FORCE_ON; | |
162 | break; | |
163 | case 'D': | |
e89a8c90 | 164 | if ((connector->connector_type != DRM_MODE_CONNECTOR_DVII) && |
d50ba256 DA |
165 | (connector->connector_type != DRM_MODE_CONNECTOR_HDMIB)) |
166 | force = DRM_FORCE_ON; | |
167 | else | |
168 | force = DRM_FORCE_ON_DIGITAL; | |
169 | break; | |
170 | case 'd': | |
171 | force = DRM_FORCE_OFF; | |
172 | break; | |
173 | default: | |
174 | goto done; | |
175 | } | |
176 | } | |
177 | if (i < 0 && yres_specified) { | |
3b40a443 | 178 | xres = simple_strtol(name, NULL, 10); |
d50ba256 DA |
179 | res_specified = 1; |
180 | } | |
181 | done: | |
182 | ||
183 | DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n", | |
184 | drm_get_connector_name(connector), xres, yres, | |
185 | (refresh) ? refresh : 60, (rb) ? " reduced blanking" : | |
186 | "", (margins) ? " with margins" : "", (interlace) ? | |
187 | " interlaced" : ""); | |
188 | ||
189 | if (force) { | |
190 | const char *s; | |
191 | switch (force) { | |
192 | case DRM_FORCE_OFF: s = "OFF"; break; | |
193 | case DRM_FORCE_ON_DIGITAL: s = "ON - dig"; break; | |
194 | default: | |
195 | case DRM_FORCE_ON: s = "ON"; break; | |
196 | } | |
197 | ||
198 | DRM_INFO("forcing %s connector %s\n", | |
199 | drm_get_connector_name(connector), s); | |
200 | connector->force = force; | |
201 | } | |
202 | ||
203 | if (res_specified) { | |
204 | cmdline_mode->specified = true; | |
205 | cmdline_mode->xres = xres; | |
206 | cmdline_mode->yres = yres; | |
207 | } | |
208 | ||
209 | if (refresh_specified) { | |
210 | cmdline_mode->refresh_specified = true; | |
211 | cmdline_mode->refresh = refresh; | |
212 | } | |
213 | ||
214 | if (bpp_specified) { | |
215 | cmdline_mode->bpp_specified = true; | |
216 | cmdline_mode->bpp = bpp; | |
217 | } | |
218 | cmdline_mode->rb = rb ? true : false; | |
219 | cmdline_mode->cvt = cvt ? true : false; | |
220 | cmdline_mode->interlace = interlace ? true : false; | |
221 | ||
222 | return true; | |
223 | } | |
224 | ||
0b4c0f3f | 225 | static int drm_fb_helper_parse_command_line(struct drm_fb_helper *fb_helper) |
d50ba256 | 226 | { |
0b4c0f3f DA |
227 | struct drm_fb_helper_connector *fb_helper_conn; |
228 | int i; | |
d50ba256 | 229 | |
0b4c0f3f | 230 | for (i = 0; i < fb_helper->connector_count; i++) { |
d50ba256 DA |
231 | char *option = NULL; |
232 | ||
0b4c0f3f DA |
233 | fb_helper_conn = fb_helper->connector_info[i]; |
234 | ||
d50ba256 | 235 | /* do something on return - turn off connector maybe */ |
0b4c0f3f | 236 | if (fb_get_options(drm_get_connector_name(fb_helper_conn->connector), &option)) |
d50ba256 DA |
237 | continue; |
238 | ||
0b4c0f3f | 239 | drm_fb_helper_connector_parse_command_line(fb_helper_conn, option); |
d50ba256 DA |
240 | } |
241 | return 0; | |
242 | } | |
243 | ||
1a7aba7f JB |
244 | int drm_fb_helper_debug_enter(struct fb_info *info) |
245 | { | |
246 | struct drm_fb_helper *helper = info->par; | |
247 | struct drm_crtc_helper_funcs *funcs; | |
248 | int i; | |
249 | ||
250 | if (list_empty(&kernel_fb_helper_list)) | |
251 | return false; | |
252 | ||
253 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { | |
254 | for (i = 0; i < helper->crtc_count; i++) { | |
255 | struct drm_mode_set *mode_set = | |
256 | &helper->crtc_info[i].mode_set; | |
257 | ||
258 | if (!mode_set->crtc->enabled) | |
259 | continue; | |
260 | ||
261 | funcs = mode_set->crtc->helper_private; | |
262 | funcs->mode_set_base_atomic(mode_set->crtc, | |
263 | mode_set->fb, | |
264 | mode_set->x, | |
265 | mode_set->y); | |
266 | ||
267 | } | |
268 | } | |
269 | ||
270 | return 0; | |
271 | } | |
272 | EXPORT_SYMBOL(drm_fb_helper_debug_enter); | |
273 | ||
274 | /* Find the real fb for a given fb helper CRTC */ | |
275 | static struct drm_framebuffer *drm_mode_config_fb(struct drm_crtc *crtc) | |
276 | { | |
277 | struct drm_device *dev = crtc->dev; | |
278 | struct drm_crtc *c; | |
279 | ||
280 | list_for_each_entry(c, &dev->mode_config.crtc_list, head) { | |
281 | if (crtc->base.id == c->base.id) | |
282 | return c->fb; | |
283 | } | |
284 | ||
285 | return NULL; | |
286 | } | |
287 | ||
288 | int drm_fb_helper_debug_leave(struct fb_info *info) | |
289 | { | |
290 | struct drm_fb_helper *helper = info->par; | |
291 | struct drm_crtc *crtc; | |
292 | struct drm_crtc_helper_funcs *funcs; | |
293 | struct drm_framebuffer *fb; | |
294 | int i; | |
295 | ||
296 | for (i = 0; i < helper->crtc_count; i++) { | |
297 | struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set; | |
298 | crtc = mode_set->crtc; | |
299 | funcs = crtc->helper_private; | |
300 | fb = drm_mode_config_fb(crtc); | |
301 | ||
302 | if (!crtc->enabled) | |
303 | continue; | |
304 | ||
305 | if (!fb) { | |
306 | DRM_ERROR("no fb to restore??\n"); | |
307 | continue; | |
308 | } | |
309 | ||
310 | funcs->mode_set_base_atomic(mode_set->crtc, fb, crtc->x, | |
311 | crtc->y); | |
312 | } | |
313 | ||
314 | return 0; | |
315 | } | |
316 | EXPORT_SYMBOL(drm_fb_helper_debug_leave); | |
317 | ||
785b93ef DA |
318 | bool drm_fb_helper_force_kernel_mode(void) |
319 | { | |
320 | int i = 0; | |
321 | bool ret, error = false; | |
322 | struct drm_fb_helper *helper; | |
323 | ||
324 | if (list_empty(&kernel_fb_helper_list)) | |
325 | return false; | |
326 | ||
327 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { | |
328 | for (i = 0; i < helper->crtc_count; i++) { | |
329 | struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set; | |
330 | ret = drm_crtc_helper_set_config(mode_set); | |
331 | if (ret) | |
332 | error = true; | |
333 | } | |
334 | } | |
335 | return error; | |
336 | } | |
337 | ||
338 | int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed, | |
339 | void *panic_str) | |
340 | { | |
fc2362af | 341 | printk(KERN_ERR "panic occurred, switching back to text console\n"); |
785b93ef DA |
342 | return drm_fb_helper_force_kernel_mode(); |
343 | return 0; | |
344 | } | |
345 | EXPORT_SYMBOL(drm_fb_helper_panic); | |
346 | ||
347 | static struct notifier_block paniced = { | |
348 | .notifier_call = drm_fb_helper_panic, | |
349 | }; | |
350 | ||
351 | /** | |
352 | * drm_fb_helper_restore - restore the framebuffer console (kernel) config | |
353 | * | |
354 | * Restore's the kernel's fbcon mode, used for lastclose & panic paths. | |
355 | */ | |
356 | void drm_fb_helper_restore(void) | |
357 | { | |
358 | bool ret; | |
359 | ret = drm_fb_helper_force_kernel_mode(); | |
360 | if (ret == true) | |
361 | DRM_ERROR("Failed to restore crtc configuration\n"); | |
362 | } | |
363 | EXPORT_SYMBOL(drm_fb_helper_restore); | |
364 | ||
bea1d35b | 365 | #ifdef CONFIG_MAGIC_SYSRQ |
785b93ef DA |
366 | static void drm_fb_helper_restore_work_fn(struct work_struct *ignored) |
367 | { | |
368 | drm_fb_helper_restore(); | |
369 | } | |
370 | static DECLARE_WORK(drm_fb_helper_restore_work, drm_fb_helper_restore_work_fn); | |
371 | ||
372 | static void drm_fb_helper_sysrq(int dummy1, struct tty_struct *dummy3) | |
373 | { | |
374 | schedule_work(&drm_fb_helper_restore_work); | |
375 | } | |
376 | ||
377 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { | |
378 | .handler = drm_fb_helper_sysrq, | |
379 | .help_msg = "force-fb(V)", | |
380 | .action_msg = "Restore framebuffer console", | |
381 | }; | |
b8c40d62 RD |
382 | #else |
383 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { }; | |
bea1d35b | 384 | #endif |
785b93ef DA |
385 | |
386 | static void drm_fb_helper_on(struct fb_info *info) | |
387 | { | |
388 | struct drm_fb_helper *fb_helper = info->par; | |
389 | struct drm_device *dev = fb_helper->dev; | |
390 | struct drm_crtc *crtc; | |
8be48d92 | 391 | struct drm_crtc_helper_funcs *crtc_funcs; |
023eb571 | 392 | struct drm_connector *connector; |
785b93ef | 393 | struct drm_encoder *encoder; |
023eb571 | 394 | int i, j; |
785b93ef DA |
395 | |
396 | /* | |
397 | * For each CRTC in this fb, turn the crtc on then, | |
398 | * find all associated encoders and turn them on. | |
399 | */ | |
8be48d92 | 400 | mutex_lock(&dev->mode_config.mutex); |
e87b2c42 | 401 | for (i = 0; i < fb_helper->crtc_count; i++) { |
8be48d92 DA |
402 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
403 | crtc_funcs = crtc->helper_private; | |
785b93ef | 404 | |
8be48d92 DA |
405 | if (!crtc->enabled) |
406 | continue; | |
407 | ||
408 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); | |
785b93ef | 409 | |
023eb571 JB |
410 | /* Walk the connectors & encoders on this fb turning them on */ |
411 | for (j = 0; j < fb_helper->connector_count; j++) { | |
412 | connector = fb_helper->connector_info[j]->connector; | |
413 | connector->dpms = DRM_MODE_DPMS_ON; | |
414 | drm_connector_property_set_value(connector, | |
415 | dev->mode_config.dpms_property, | |
416 | DRM_MODE_DPMS_ON); | |
417 | } | |
8be48d92 DA |
418 | /* Found a CRTC on this fb, now find encoders */ |
419 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
420 | if (encoder->crtc == crtc) { | |
421 | struct drm_encoder_helper_funcs *encoder_funcs; | |
785b93ef | 422 | |
8be48d92 DA |
423 | encoder_funcs = encoder->helper_private; |
424 | encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); | |
785b93ef DA |
425 | } |
426 | } | |
427 | } | |
8be48d92 | 428 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
429 | } |
430 | ||
431 | static void drm_fb_helper_off(struct fb_info *info, int dpms_mode) | |
432 | { | |
433 | struct drm_fb_helper *fb_helper = info->par; | |
434 | struct drm_device *dev = fb_helper->dev; | |
435 | struct drm_crtc *crtc; | |
8be48d92 | 436 | struct drm_crtc_helper_funcs *crtc_funcs; |
023eb571 | 437 | struct drm_connector *connector; |
785b93ef | 438 | struct drm_encoder *encoder; |
023eb571 | 439 | int i, j; |
785b93ef DA |
440 | |
441 | /* | |
442 | * For each CRTC in this fb, find all associated encoders | |
443 | * and turn them off, then turn off the CRTC. | |
444 | */ | |
8be48d92 | 445 | mutex_lock(&dev->mode_config.mutex); |
e87b2c42 | 446 | for (i = 0; i < fb_helper->crtc_count; i++) { |
8be48d92 DA |
447 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
448 | crtc_funcs = crtc->helper_private; | |
e87b2c42 | 449 | |
8be48d92 DA |
450 | if (!crtc->enabled) |
451 | continue; | |
e87b2c42 | 452 | |
023eb571 JB |
453 | /* Walk the connectors on this fb and mark them off */ |
454 | for (j = 0; j < fb_helper->connector_count; j++) { | |
455 | connector = fb_helper->connector_info[j]->connector; | |
456 | connector->dpms = dpms_mode; | |
457 | drm_connector_property_set_value(connector, | |
458 | dev->mode_config.dpms_property, | |
459 | dpms_mode); | |
460 | } | |
8be48d92 DA |
461 | /* Found a CRTC on this fb, now find encoders */ |
462 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
463 | if (encoder->crtc == crtc) { | |
464 | struct drm_encoder_helper_funcs *encoder_funcs; | |
e87b2c42 | 465 | |
8be48d92 DA |
466 | encoder_funcs = encoder->helper_private; |
467 | encoder_funcs->dpms(encoder, dpms_mode); | |
e87b2c42 | 468 | } |
785b93ef | 469 | } |
8be48d92 | 470 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF); |
785b93ef | 471 | } |
8be48d92 | 472 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
473 | } |
474 | ||
475 | int drm_fb_helper_blank(int blank, struct fb_info *info) | |
476 | { | |
477 | switch (blank) { | |
731b5a15 | 478 | /* Display: On; HSync: On, VSync: On */ |
785b93ef DA |
479 | case FB_BLANK_UNBLANK: |
480 | drm_fb_helper_on(info); | |
481 | break; | |
731b5a15 | 482 | /* Display: Off; HSync: On, VSync: On */ |
785b93ef | 483 | case FB_BLANK_NORMAL: |
5fd4df4d | 484 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); |
785b93ef | 485 | break; |
731b5a15 | 486 | /* Display: Off; HSync: Off, VSync: On */ |
785b93ef DA |
487 | case FB_BLANK_HSYNC_SUSPEND: |
488 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); | |
489 | break; | |
731b5a15 | 490 | /* Display: Off; HSync: On, VSync: Off */ |
785b93ef DA |
491 | case FB_BLANK_VSYNC_SUSPEND: |
492 | drm_fb_helper_off(info, DRM_MODE_DPMS_SUSPEND); | |
493 | break; | |
731b5a15 | 494 | /* Display: Off; HSync: Off, VSync: Off */ |
785b93ef DA |
495 | case FB_BLANK_POWERDOWN: |
496 | drm_fb_helper_off(info, DRM_MODE_DPMS_OFF); | |
497 | break; | |
498 | } | |
499 | return 0; | |
500 | } | |
501 | EXPORT_SYMBOL(drm_fb_helper_blank); | |
502 | ||
503 | static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) | |
504 | { | |
505 | int i; | |
506 | ||
0b4c0f3f DA |
507 | for (i = 0; i < helper->connector_count; i++) |
508 | kfree(helper->connector_info[i]); | |
509 | kfree(helper->connector_info); | |
785b93ef DA |
510 | for (i = 0; i < helper->crtc_count; i++) |
511 | kfree(helper->crtc_info[i].mode_set.connectors); | |
512 | kfree(helper->crtc_info); | |
513 | } | |
514 | ||
4abe3520 DA |
515 | int drm_fb_helper_init(struct drm_device *dev, |
516 | struct drm_fb_helper *fb_helper, | |
eb1f8e4f | 517 | int crtc_count, int max_conn_count) |
785b93ef | 518 | { |
785b93ef DA |
519 | struct drm_crtc *crtc; |
520 | int ret = 0; | |
521 | int i; | |
522 | ||
4abe3520 | 523 | fb_helper->dev = dev; |
4abe3520 DA |
524 | |
525 | INIT_LIST_HEAD(&fb_helper->kernel_fb_list); | |
526 | ||
527 | fb_helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL); | |
528 | if (!fb_helper->crtc_info) | |
785b93ef DA |
529 | return -ENOMEM; |
530 | ||
4abe3520 DA |
531 | fb_helper->crtc_count = crtc_count; |
532 | fb_helper->connector_info = kcalloc(dev->mode_config.num_connector, sizeof(struct drm_fb_helper_connector *), GFP_KERNEL); | |
533 | if (!fb_helper->connector_info) { | |
534 | kfree(fb_helper->crtc_info); | |
0b4c0f3f DA |
535 | return -ENOMEM; |
536 | } | |
4abe3520 | 537 | fb_helper->connector_count = 0; |
785b93ef DA |
538 | |
539 | for (i = 0; i < crtc_count; i++) { | |
4abe3520 | 540 | fb_helper->crtc_info[i].mode_set.connectors = |
785b93ef DA |
541 | kcalloc(max_conn_count, |
542 | sizeof(struct drm_connector *), | |
543 | GFP_KERNEL); | |
544 | ||
4abe3520 | 545 | if (!fb_helper->crtc_info[i].mode_set.connectors) { |
785b93ef DA |
546 | ret = -ENOMEM; |
547 | goto out_free; | |
548 | } | |
4abe3520 | 549 | fb_helper->crtc_info[i].mode_set.num_connectors = 0; |
785b93ef DA |
550 | } |
551 | ||
552 | i = 0; | |
553 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
4abe3520 DA |
554 | fb_helper->crtc_info[i].crtc_id = crtc->base.id; |
555 | fb_helper->crtc_info[i].mode_set.crtc = crtc; | |
785b93ef DA |
556 | i++; |
557 | } | |
4abe3520 | 558 | fb_helper->conn_limit = max_conn_count; |
785b93ef DA |
559 | return 0; |
560 | out_free: | |
4abe3520 | 561 | drm_fb_helper_crtc_free(fb_helper); |
785b93ef DA |
562 | return -ENOMEM; |
563 | } | |
4abe3520 DA |
564 | EXPORT_SYMBOL(drm_fb_helper_init); |
565 | ||
566 | void drm_fb_helper_fini(struct drm_fb_helper *fb_helper) | |
567 | { | |
568 | if (!list_empty(&fb_helper->kernel_fb_list)) { | |
569 | list_del(&fb_helper->kernel_fb_list); | |
570 | if (list_empty(&kernel_fb_helper_list)) { | |
3da1f33e | 571 | printk(KERN_INFO "drm: unregistered panic notifier\n"); |
4abe3520 DA |
572 | atomic_notifier_chain_unregister(&panic_notifier_list, |
573 | &paniced); | |
574 | unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
575 | } | |
576 | } | |
577 | ||
578 | drm_fb_helper_crtc_free(fb_helper); | |
579 | ||
4abe3520 DA |
580 | } |
581 | EXPORT_SYMBOL(drm_fb_helper_fini); | |
785b93ef | 582 | |
c850cb78 | 583 | static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, |
b8c00ac5 DA |
584 | u16 blue, u16 regno, struct fb_info *info) |
585 | { | |
586 | struct drm_fb_helper *fb_helper = info->par; | |
587 | struct drm_framebuffer *fb = fb_helper->fb; | |
588 | int pindex; | |
589 | ||
c850cb78 DA |
590 | if (info->fix.visual == FB_VISUAL_TRUECOLOR) { |
591 | u32 *palette; | |
592 | u32 value; | |
593 | /* place color in psuedopalette */ | |
594 | if (regno > 16) | |
595 | return -EINVAL; | |
596 | palette = (u32 *)info->pseudo_palette; | |
597 | red >>= (16 - info->var.red.length); | |
598 | green >>= (16 - info->var.green.length); | |
599 | blue >>= (16 - info->var.blue.length); | |
600 | value = (red << info->var.red.offset) | | |
601 | (green << info->var.green.offset) | | |
602 | (blue << info->var.blue.offset); | |
603 | palette[regno] = value; | |
604 | return 0; | |
605 | } | |
606 | ||
b8c00ac5 DA |
607 | pindex = regno; |
608 | ||
609 | if (fb->bits_per_pixel == 16) { | |
610 | pindex = regno << 3; | |
611 | ||
612 | if (fb->depth == 16 && regno > 63) | |
c850cb78 | 613 | return -EINVAL; |
b8c00ac5 | 614 | if (fb->depth == 15 && regno > 31) |
c850cb78 | 615 | return -EINVAL; |
b8c00ac5 DA |
616 | |
617 | if (fb->depth == 16) { | |
618 | u16 r, g, b; | |
619 | int i; | |
620 | if (regno < 32) { | |
621 | for (i = 0; i < 8; i++) | |
622 | fb_helper->funcs->gamma_set(crtc, red, | |
623 | green, blue, pindex + i); | |
624 | } | |
625 | ||
626 | fb_helper->funcs->gamma_get(crtc, &r, | |
627 | &g, &b, | |
628 | pindex >> 1); | |
629 | ||
630 | for (i = 0; i < 4; i++) | |
631 | fb_helper->funcs->gamma_set(crtc, r, | |
632 | green, b, | |
633 | (pindex >> 1) + i); | |
634 | } | |
635 | } | |
636 | ||
637 | if (fb->depth != 16) | |
638 | fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex); | |
c850cb78 | 639 | return 0; |
b8c00ac5 DA |
640 | } |
641 | ||
068143d3 DA |
642 | int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) |
643 | { | |
644 | struct drm_fb_helper *fb_helper = info->par; | |
8be48d92 | 645 | struct drm_crtc_helper_funcs *crtc_funcs; |
068143d3 DA |
646 | u16 *red, *green, *blue, *transp; |
647 | struct drm_crtc *crtc; | |
648 | int i, rc = 0; | |
649 | int start; | |
650 | ||
8be48d92 DA |
651 | for (i = 0; i < fb_helper->crtc_count; i++) { |
652 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
653 | crtc_funcs = crtc->helper_private; | |
068143d3 DA |
654 | |
655 | red = cmap->red; | |
656 | green = cmap->green; | |
657 | blue = cmap->blue; | |
658 | transp = cmap->transp; | |
659 | start = cmap->start; | |
660 | ||
661 | for (i = 0; i < cmap->len; i++) { | |
662 | u16 hred, hgreen, hblue, htransp = 0xffff; | |
663 | ||
664 | hred = *red++; | |
665 | hgreen = *green++; | |
666 | hblue = *blue++; | |
667 | ||
668 | if (transp) | |
669 | htransp = *transp++; | |
670 | ||
c850cb78 DA |
671 | rc = setcolreg(crtc, hred, hgreen, hblue, start++, info); |
672 | if (rc) | |
673 | return rc; | |
068143d3 DA |
674 | } |
675 | crtc_funcs->load_lut(crtc); | |
676 | } | |
677 | return rc; | |
678 | } | |
679 | EXPORT_SYMBOL(drm_fb_helper_setcmap); | |
680 | ||
785b93ef DA |
681 | int drm_fb_helper_check_var(struct fb_var_screeninfo *var, |
682 | struct fb_info *info) | |
683 | { | |
684 | struct drm_fb_helper *fb_helper = info->par; | |
685 | struct drm_framebuffer *fb = fb_helper->fb; | |
686 | int depth; | |
687 | ||
5349ef31 | 688 | if (var->pixclock != 0) |
785b93ef DA |
689 | return -EINVAL; |
690 | ||
691 | /* Need to resize the fb object !!! */ | |
509c7d83 DA |
692 | if (var->bits_per_pixel > fb->bits_per_pixel || var->xres > fb->width || var->yres > fb->height) { |
693 | DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb " | |
694 | "object %dx%d-%d > %dx%d-%d\n", var->xres, var->yres, var->bits_per_pixel, | |
695 | fb->width, fb->height, fb->bits_per_pixel); | |
785b93ef DA |
696 | return -EINVAL; |
697 | } | |
698 | ||
699 | switch (var->bits_per_pixel) { | |
700 | case 16: | |
701 | depth = (var->green.length == 6) ? 16 : 15; | |
702 | break; | |
703 | case 32: | |
704 | depth = (var->transp.length > 0) ? 32 : 24; | |
705 | break; | |
706 | default: | |
707 | depth = var->bits_per_pixel; | |
708 | break; | |
709 | } | |
710 | ||
711 | switch (depth) { | |
712 | case 8: | |
713 | var->red.offset = 0; | |
714 | var->green.offset = 0; | |
715 | var->blue.offset = 0; | |
716 | var->red.length = 8; | |
717 | var->green.length = 8; | |
718 | var->blue.length = 8; | |
719 | var->transp.length = 0; | |
720 | var->transp.offset = 0; | |
721 | break; | |
722 | case 15: | |
723 | var->red.offset = 10; | |
724 | var->green.offset = 5; | |
725 | var->blue.offset = 0; | |
726 | var->red.length = 5; | |
727 | var->green.length = 5; | |
728 | var->blue.length = 5; | |
729 | var->transp.length = 1; | |
730 | var->transp.offset = 15; | |
731 | break; | |
732 | case 16: | |
733 | var->red.offset = 11; | |
734 | var->green.offset = 5; | |
735 | var->blue.offset = 0; | |
736 | var->red.length = 5; | |
737 | var->green.length = 6; | |
738 | var->blue.length = 5; | |
739 | var->transp.length = 0; | |
740 | var->transp.offset = 0; | |
741 | break; | |
742 | case 24: | |
743 | var->red.offset = 16; | |
744 | var->green.offset = 8; | |
745 | var->blue.offset = 0; | |
746 | var->red.length = 8; | |
747 | var->green.length = 8; | |
748 | var->blue.length = 8; | |
749 | var->transp.length = 0; | |
750 | var->transp.offset = 0; | |
751 | break; | |
752 | case 32: | |
753 | var->red.offset = 16; | |
754 | var->green.offset = 8; | |
755 | var->blue.offset = 0; | |
756 | var->red.length = 8; | |
757 | var->green.length = 8; | |
758 | var->blue.length = 8; | |
759 | var->transp.length = 8; | |
760 | var->transp.offset = 24; | |
761 | break; | |
762 | default: | |
763 | return -EINVAL; | |
764 | } | |
765 | return 0; | |
766 | } | |
767 | EXPORT_SYMBOL(drm_fb_helper_check_var); | |
768 | ||
769 | /* this will let fbcon do the mode init */ | |
770 | int drm_fb_helper_set_par(struct fb_info *info) | |
771 | { | |
772 | struct drm_fb_helper *fb_helper = info->par; | |
773 | struct drm_device *dev = fb_helper->dev; | |
774 | struct fb_var_screeninfo *var = &info->var; | |
775 | struct drm_crtc *crtc; | |
776 | int ret; | |
777 | int i; | |
778 | ||
5349ef31 | 779 | if (var->pixclock != 0) { |
172e91f5 | 780 | DRM_ERROR("PIXEL CLOCK SET\n"); |
785b93ef DA |
781 | return -EINVAL; |
782 | } | |
783 | ||
8be48d92 DA |
784 | mutex_lock(&dev->mode_config.mutex); |
785 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
786 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
0b4c0f3f DA |
787 | ret = crtc->funcs->set_config(&fb_helper->crtc_info[i].mode_set); |
788 | if (ret) { | |
785b93ef | 789 | mutex_unlock(&dev->mode_config.mutex); |
0b4c0f3f | 790 | return ret; |
785b93ef DA |
791 | } |
792 | } | |
8be48d92 | 793 | mutex_unlock(&dev->mode_config.mutex); |
4abe3520 DA |
794 | |
795 | if (fb_helper->delayed_hotplug) { | |
796 | fb_helper->delayed_hotplug = false; | |
eb1f8e4f | 797 | drm_fb_helper_hotplug_event(fb_helper); |
4abe3520 | 798 | } |
785b93ef DA |
799 | return 0; |
800 | } | |
801 | EXPORT_SYMBOL(drm_fb_helper_set_par); | |
802 | ||
803 | int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, | |
804 | struct fb_info *info) | |
805 | { | |
806 | struct drm_fb_helper *fb_helper = info->par; | |
807 | struct drm_device *dev = fb_helper->dev; | |
808 | struct drm_mode_set *modeset; | |
809 | struct drm_crtc *crtc; | |
810 | int ret = 0; | |
811 | int i; | |
812 | ||
8be48d92 DA |
813 | mutex_lock(&dev->mode_config.mutex); |
814 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
815 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
785b93ef DA |
816 | |
817 | modeset = &fb_helper->crtc_info[i].mode_set; | |
818 | ||
819 | modeset->x = var->xoffset; | |
820 | modeset->y = var->yoffset; | |
821 | ||
822 | if (modeset->num_connectors) { | |
785b93ef | 823 | ret = crtc->funcs->set_config(modeset); |
785b93ef DA |
824 | if (!ret) { |
825 | info->var.xoffset = var->xoffset; | |
826 | info->var.yoffset = var->yoffset; | |
827 | } | |
828 | } | |
829 | } | |
8be48d92 | 830 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
831 | return ret; |
832 | } | |
833 | EXPORT_SYMBOL(drm_fb_helper_pan_display); | |
834 | ||
8be48d92 DA |
835 | int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, |
836 | int preferred_bpp) | |
785b93ef | 837 | { |
785b93ef DA |
838 | int new_fb = 0; |
839 | int crtc_count = 0; | |
4abe3520 | 840 | int i; |
785b93ef | 841 | struct fb_info *info; |
38651674 | 842 | struct drm_fb_helper_surface_size sizes; |
8be48d92 | 843 | int gamma_size = 0; |
38651674 DA |
844 | |
845 | memset(&sizes, 0, sizeof(struct drm_fb_helper_surface_size)); | |
846 | sizes.surface_depth = 24; | |
847 | sizes.surface_bpp = 32; | |
848 | sizes.fb_width = (unsigned)-1; | |
849 | sizes.fb_height = (unsigned)-1; | |
785b93ef | 850 | |
b8c00ac5 DA |
851 | /* if driver picks 8 or 16 by default use that |
852 | for both depth/bpp */ | |
38651674 DA |
853 | if (preferred_bpp != sizes.surface_bpp) { |
854 | sizes.surface_depth = sizes.surface_bpp = preferred_bpp; | |
b8c00ac5 | 855 | } |
785b93ef | 856 | /* first up get a count of crtcs now in use and new min/maxes width/heights */ |
0b4c0f3f DA |
857 | for (i = 0; i < fb_helper->connector_count; i++) { |
858 | struct drm_fb_helper_connector *fb_helper_conn = fb_helper->connector_info[i]; | |
8ef8678c DA |
859 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
860 | ||
0b4c0f3f | 861 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
d50ba256 DA |
862 | |
863 | if (cmdline_mode->bpp_specified) { | |
864 | switch (cmdline_mode->bpp) { | |
865 | case 8: | |
38651674 | 866 | sizes.surface_depth = sizes.surface_bpp = 8; |
d50ba256 DA |
867 | break; |
868 | case 15: | |
38651674 DA |
869 | sizes.surface_depth = 15; |
870 | sizes.surface_bpp = 16; | |
d50ba256 DA |
871 | break; |
872 | case 16: | |
38651674 | 873 | sizes.surface_depth = sizes.surface_bpp = 16; |
d50ba256 DA |
874 | break; |
875 | case 24: | |
38651674 | 876 | sizes.surface_depth = sizes.surface_bpp = 24; |
d50ba256 DA |
877 | break; |
878 | case 32: | |
38651674 DA |
879 | sizes.surface_depth = 24; |
880 | sizes.surface_bpp = 32; | |
d50ba256 DA |
881 | break; |
882 | } | |
883 | break; | |
884 | } | |
885 | } | |
886 | ||
8be48d92 DA |
887 | crtc_count = 0; |
888 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
889 | struct drm_display_mode *desired_mode; | |
890 | desired_mode = fb_helper->crtc_info[i].desired_mode; | |
891 | ||
892 | if (desired_mode) { | |
893 | if (gamma_size == 0) | |
894 | gamma_size = fb_helper->crtc_info[i].mode_set.crtc->gamma_size; | |
895 | if (desired_mode->hdisplay < sizes.fb_width) | |
896 | sizes.fb_width = desired_mode->hdisplay; | |
897 | if (desired_mode->vdisplay < sizes.fb_height) | |
898 | sizes.fb_height = desired_mode->vdisplay; | |
899 | if (desired_mode->hdisplay > sizes.surface_width) | |
900 | sizes.surface_width = desired_mode->hdisplay; | |
901 | if (desired_mode->vdisplay > sizes.surface_height) | |
902 | sizes.surface_height = desired_mode->vdisplay; | |
785b93ef DA |
903 | crtc_count++; |
904 | } | |
905 | } | |
906 | ||
38651674 | 907 | if (crtc_count == 0 || sizes.fb_width == -1 || sizes.fb_height == -1) { |
785b93ef DA |
908 | /* hmm everyone went away - assume VGA cable just fell out |
909 | and will come back later. */ | |
eb1f8e4f | 910 | DRM_INFO("Cannot find any crtc or sizes - going 1024x768\n"); |
19b4b445 DA |
911 | sizes.fb_width = sizes.surface_width = 1024; |
912 | sizes.fb_height = sizes.surface_height = 768; | |
785b93ef DA |
913 | } |
914 | ||
38651674 | 915 | /* push down into drivers */ |
4abe3520 | 916 | new_fb = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes); |
38651674 DA |
917 | if (new_fb < 0) |
918 | return new_fb; | |
785b93ef | 919 | |
38651674 | 920 | info = fb_helper->fbdev; |
785b93ef | 921 | |
8be48d92 DA |
922 | /* set the fb pointer */ |
923 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
924 | fb_helper->crtc_info[i].mode_set.fb = fb_helper->fb; | |
785b93ef | 925 | } |
785b93ef DA |
926 | |
927 | if (new_fb) { | |
5349ef31 | 928 | info->var.pixclock = 0; |
3bea21b6 | 929 | if (register_framebuffer(info) < 0) { |
785b93ef | 930 | return -EINVAL; |
3bea21b6 | 931 | } |
38651674 DA |
932 | |
933 | printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, | |
934 | info->fix.id); | |
935 | ||
785b93ef DA |
936 | } else { |
937 | drm_fb_helper_set_par(info); | |
938 | } | |
785b93ef DA |
939 | |
940 | /* Switch back to kernel console on panic */ | |
941 | /* multi card linked list maybe */ | |
942 | if (list_empty(&kernel_fb_helper_list)) { | |
3da1f33e | 943 | printk(KERN_INFO "drm: registered panic notifier\n"); |
785b93ef DA |
944 | atomic_notifier_chain_register(&panic_notifier_list, |
945 | &paniced); | |
946 | register_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
947 | } | |
38651674 DA |
948 | if (new_fb) |
949 | list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list); | |
950 | ||
785b93ef DA |
951 | return 0; |
952 | } | |
953 | EXPORT_SYMBOL(drm_fb_helper_single_fb_probe); | |
954 | ||
068143d3 DA |
955 | void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, |
956 | uint32_t depth) | |
785b93ef DA |
957 | { |
958 | info->fix.type = FB_TYPE_PACKED_PIXELS; | |
068143d3 | 959 | info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR : |
c850cb78 | 960 | FB_VISUAL_TRUECOLOR; |
785b93ef DA |
961 | info->fix.type_aux = 0; |
962 | info->fix.xpanstep = 1; /* doing it in hw */ | |
963 | info->fix.ypanstep = 1; /* doing it in hw */ | |
964 | info->fix.ywrapstep = 0; | |
3420e742 | 965 | info->fix.accel = FB_ACCEL_NONE; |
785b93ef DA |
966 | info->fix.type_aux = 0; |
967 | ||
968 | info->fix.line_length = pitch; | |
969 | return; | |
970 | } | |
971 | EXPORT_SYMBOL(drm_fb_helper_fill_fix); | |
972 | ||
38651674 | 973 | void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, |
785b93ef DA |
974 | uint32_t fb_width, uint32_t fb_height) |
975 | { | |
38651674 DA |
976 | struct drm_framebuffer *fb = fb_helper->fb; |
977 | info->pseudo_palette = fb_helper->pseudo_palette; | |
785b93ef DA |
978 | info->var.xres_virtual = fb->width; |
979 | info->var.yres_virtual = fb->height; | |
980 | info->var.bits_per_pixel = fb->bits_per_pixel; | |
981 | info->var.xoffset = 0; | |
982 | info->var.yoffset = 0; | |
983 | info->var.activate = FB_ACTIVATE_NOW; | |
984 | info->var.height = -1; | |
985 | info->var.width = -1; | |
986 | ||
987 | switch (fb->depth) { | |
988 | case 8: | |
989 | info->var.red.offset = 0; | |
990 | info->var.green.offset = 0; | |
991 | info->var.blue.offset = 0; | |
992 | info->var.red.length = 8; /* 8bit DAC */ | |
993 | info->var.green.length = 8; | |
994 | info->var.blue.length = 8; | |
995 | info->var.transp.offset = 0; | |
996 | info->var.transp.length = 0; | |
997 | break; | |
998 | case 15: | |
999 | info->var.red.offset = 10; | |
1000 | info->var.green.offset = 5; | |
1001 | info->var.blue.offset = 0; | |
1002 | info->var.red.length = 5; | |
1003 | info->var.green.length = 5; | |
1004 | info->var.blue.length = 5; | |
1005 | info->var.transp.offset = 15; | |
1006 | info->var.transp.length = 1; | |
1007 | break; | |
1008 | case 16: | |
1009 | info->var.red.offset = 11; | |
1010 | info->var.green.offset = 5; | |
1011 | info->var.blue.offset = 0; | |
1012 | info->var.red.length = 5; | |
1013 | info->var.green.length = 6; | |
1014 | info->var.blue.length = 5; | |
1015 | info->var.transp.offset = 0; | |
1016 | break; | |
1017 | case 24: | |
1018 | info->var.red.offset = 16; | |
1019 | info->var.green.offset = 8; | |
1020 | info->var.blue.offset = 0; | |
1021 | info->var.red.length = 8; | |
1022 | info->var.green.length = 8; | |
1023 | info->var.blue.length = 8; | |
1024 | info->var.transp.offset = 0; | |
1025 | info->var.transp.length = 0; | |
1026 | break; | |
1027 | case 32: | |
1028 | info->var.red.offset = 16; | |
1029 | info->var.green.offset = 8; | |
1030 | info->var.blue.offset = 0; | |
1031 | info->var.red.length = 8; | |
1032 | info->var.green.length = 8; | |
1033 | info->var.blue.length = 8; | |
1034 | info->var.transp.offset = 24; | |
1035 | info->var.transp.length = 8; | |
1036 | break; | |
1037 | default: | |
1038 | break; | |
1039 | } | |
1040 | ||
1041 | info->var.xres = fb_width; | |
1042 | info->var.yres = fb_height; | |
1043 | } | |
1044 | EXPORT_SYMBOL(drm_fb_helper_fill_var); | |
38651674 | 1045 | |
0b4c0f3f DA |
1046 | static int drm_fb_helper_probe_connector_modes(struct drm_fb_helper *fb_helper, |
1047 | uint32_t maxX, | |
1048 | uint32_t maxY) | |
38651674 DA |
1049 | { |
1050 | struct drm_connector *connector; | |
1051 | int count = 0; | |
0b4c0f3f | 1052 | int i; |
38651674 | 1053 | |
0b4c0f3f DA |
1054 | for (i = 0; i < fb_helper->connector_count; i++) { |
1055 | connector = fb_helper->connector_info[i]->connector; | |
38651674 DA |
1056 | count += connector->funcs->fill_modes(connector, maxX, maxY); |
1057 | } | |
1058 | ||
1059 | return count; | |
1060 | } | |
1061 | ||
0b4c0f3f | 1062 | static struct drm_display_mode *drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, int width, int height) |
38651674 DA |
1063 | { |
1064 | struct drm_display_mode *mode; | |
1065 | ||
0b4c0f3f | 1066 | list_for_each_entry(mode, &fb_connector->connector->modes, head) { |
38651674 DA |
1067 | if (drm_mode_width(mode) > width || |
1068 | drm_mode_height(mode) > height) | |
1069 | continue; | |
1070 | if (mode->type & DRM_MODE_TYPE_PREFERRED) | |
1071 | return mode; | |
1072 | } | |
1073 | return NULL; | |
1074 | } | |
1075 | ||
0b4c0f3f | 1076 | static bool drm_has_cmdline_mode(struct drm_fb_helper_connector *fb_connector) |
38651674 | 1077 | { |
38651674 | 1078 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
0b4c0f3f | 1079 | cmdline_mode = &fb_connector->cmdline_mode; |
38651674 DA |
1080 | return cmdline_mode->specified; |
1081 | } | |
1082 | ||
0b4c0f3f DA |
1083 | static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn, |
1084 | int width, int height) | |
38651674 | 1085 | { |
38651674 DA |
1086 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
1087 | struct drm_display_mode *mode = NULL; | |
1088 | ||
0b4c0f3f | 1089 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
38651674 DA |
1090 | if (cmdline_mode->specified == false) |
1091 | return mode; | |
1092 | ||
1093 | /* attempt to find a matching mode in the list of modes | |
1094 | * we have gotten so far, if not add a CVT mode that conforms | |
1095 | */ | |
1096 | if (cmdline_mode->rb || cmdline_mode->margins) | |
1097 | goto create_mode; | |
1098 | ||
0b4c0f3f | 1099 | list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { |
38651674 DA |
1100 | /* check width/height */ |
1101 | if (mode->hdisplay != cmdline_mode->xres || | |
1102 | mode->vdisplay != cmdline_mode->yres) | |
1103 | continue; | |
1104 | ||
1105 | if (cmdline_mode->refresh_specified) { | |
1106 | if (mode->vrefresh != cmdline_mode->refresh) | |
1107 | continue; | |
1108 | } | |
1109 | ||
1110 | if (cmdline_mode->interlace) { | |
1111 | if (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) | |
1112 | continue; | |
1113 | } | |
1114 | return mode; | |
1115 | } | |
1116 | ||
1117 | create_mode: | |
b829e011 AJ |
1118 | if (cmdline_mode->cvt) |
1119 | mode = drm_cvt_mode(fb_helper_conn->connector->dev, | |
1120 | cmdline_mode->xres, cmdline_mode->yres, | |
1121 | cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60, | |
1122 | cmdline_mode->rb, cmdline_mode->interlace, | |
1123 | cmdline_mode->margins); | |
1124 | else | |
1125 | mode = drm_gtf_mode(fb_helper_conn->connector->dev, | |
1126 | cmdline_mode->xres, cmdline_mode->yres, | |
1127 | cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60, | |
1128 | cmdline_mode->interlace, | |
1129 | cmdline_mode->margins); | |
38651674 | 1130 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
0b4c0f3f | 1131 | list_add(&mode->head, &fb_helper_conn->connector->modes); |
38651674 DA |
1132 | return mode; |
1133 | } | |
1134 | ||
1135 | static bool drm_connector_enabled(struct drm_connector *connector, bool strict) | |
1136 | { | |
1137 | bool enable; | |
1138 | ||
1139 | if (strict) { | |
1140 | enable = connector->status == connector_status_connected; | |
1141 | } else { | |
1142 | enable = connector->status != connector_status_disconnected; | |
1143 | } | |
1144 | return enable; | |
1145 | } | |
1146 | ||
0b4c0f3f DA |
1147 | static void drm_enable_connectors(struct drm_fb_helper *fb_helper, |
1148 | bool *enabled) | |
38651674 DA |
1149 | { |
1150 | bool any_enabled = false; | |
1151 | struct drm_connector *connector; | |
1152 | int i = 0; | |
1153 | ||
0b4c0f3f DA |
1154 | for (i = 0; i < fb_helper->connector_count; i++) { |
1155 | connector = fb_helper->connector_info[i]->connector; | |
38651674 DA |
1156 | enabled[i] = drm_connector_enabled(connector, true); |
1157 | DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, | |
1158 | enabled[i] ? "yes" : "no"); | |
1159 | any_enabled |= enabled[i]; | |
38651674 DA |
1160 | } |
1161 | ||
1162 | if (any_enabled) | |
1163 | return; | |
1164 | ||
0b4c0f3f DA |
1165 | for (i = 0; i < fb_helper->connector_count; i++) { |
1166 | connector = fb_helper->connector_info[i]->connector; | |
38651674 | 1167 | enabled[i] = drm_connector_enabled(connector, false); |
38651674 DA |
1168 | } |
1169 | } | |
1170 | ||
1d42bbc8 DA |
1171 | static bool drm_target_cloned(struct drm_fb_helper *fb_helper, |
1172 | struct drm_display_mode **modes, | |
1173 | bool *enabled, int width, int height) | |
1174 | { | |
1175 | int count, i, j; | |
1176 | bool can_clone = false; | |
1177 | struct drm_fb_helper_connector *fb_helper_conn; | |
1178 | struct drm_display_mode *dmt_mode, *mode; | |
1179 | ||
1180 | /* only contemplate cloning in the single crtc case */ | |
1181 | if (fb_helper->crtc_count > 1) | |
1182 | return false; | |
1183 | ||
1184 | count = 0; | |
1185 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1186 | if (enabled[i]) | |
1187 | count++; | |
1188 | } | |
1189 | ||
1190 | /* only contemplate cloning if more than one connector is enabled */ | |
1191 | if (count <= 1) | |
1192 | return false; | |
1193 | ||
1194 | /* check the command line or if nothing common pick 1024x768 */ | |
1195 | can_clone = true; | |
1196 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1197 | if (!enabled[i]) | |
1198 | continue; | |
1199 | fb_helper_conn = fb_helper->connector_info[i]; | |
1200 | modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); | |
1201 | if (!modes[i]) { | |
1202 | can_clone = false; | |
1203 | break; | |
1204 | } | |
1205 | for (j = 0; j < i; j++) { | |
1206 | if (!enabled[j]) | |
1207 | continue; | |
1208 | if (!drm_mode_equal(modes[j], modes[i])) | |
1209 | can_clone = false; | |
1210 | } | |
1211 | } | |
1212 | ||
1213 | if (can_clone) { | |
1214 | DRM_DEBUG_KMS("can clone using command line\n"); | |
1215 | return true; | |
1216 | } | |
1217 | ||
1218 | /* try and find a 1024x768 mode on each connector */ | |
1219 | can_clone = true; | |
1220 | dmt_mode = drm_mode_find_dmt(fb_helper->dev, 1024, 768, 60); | |
1221 | ||
1222 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1223 | ||
1224 | if (!enabled[i]) | |
1225 | continue; | |
1226 | ||
1227 | fb_helper_conn = fb_helper->connector_info[i]; | |
1228 | list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { | |
1229 | if (drm_mode_equal(mode, dmt_mode)) | |
1230 | modes[i] = mode; | |
1231 | } | |
1232 | if (!modes[i]) | |
1233 | can_clone = false; | |
1234 | } | |
1235 | ||
1236 | if (can_clone) { | |
1237 | DRM_DEBUG_KMS("can clone using 1024x768\n"); | |
1238 | return true; | |
1239 | } | |
1240 | DRM_INFO("kms: can't enable cloning when we probably wanted to.\n"); | |
1241 | return false; | |
1242 | } | |
1243 | ||
0b4c0f3f | 1244 | static bool drm_target_preferred(struct drm_fb_helper *fb_helper, |
38651674 DA |
1245 | struct drm_display_mode **modes, |
1246 | bool *enabled, int width, int height) | |
1247 | { | |
0b4c0f3f DA |
1248 | struct drm_fb_helper_connector *fb_helper_conn; |
1249 | int i; | |
38651674 | 1250 | |
0b4c0f3f DA |
1251 | for (i = 0; i < fb_helper->connector_count; i++) { |
1252 | fb_helper_conn = fb_helper->connector_info[i]; | |
38651674 | 1253 | |
0b4c0f3f | 1254 | if (enabled[i] == false) |
38651674 | 1255 | continue; |
38651674 DA |
1256 | |
1257 | DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n", | |
0b4c0f3f | 1258 | fb_helper_conn->connector->base.id); |
38651674 DA |
1259 | |
1260 | /* got for command line mode first */ | |
0b4c0f3f | 1261 | modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); |
38651674 DA |
1262 | if (!modes[i]) { |
1263 | DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", | |
0b4c0f3f DA |
1264 | fb_helper_conn->connector->base.id); |
1265 | modes[i] = drm_has_preferred_mode(fb_helper_conn, width, height); | |
38651674 DA |
1266 | } |
1267 | /* No preferred modes, pick one off the list */ | |
0b4c0f3f DA |
1268 | if (!modes[i] && !list_empty(&fb_helper_conn->connector->modes)) { |
1269 | list_for_each_entry(modes[i], &fb_helper_conn->connector->modes, head) | |
38651674 DA |
1270 | break; |
1271 | } | |
1272 | DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : | |
1273 | "none"); | |
38651674 DA |
1274 | } |
1275 | return true; | |
1276 | } | |
1277 | ||
8be48d92 DA |
1278 | static int drm_pick_crtcs(struct drm_fb_helper *fb_helper, |
1279 | struct drm_fb_helper_crtc **best_crtcs, | |
38651674 DA |
1280 | struct drm_display_mode **modes, |
1281 | int n, int width, int height) | |
1282 | { | |
1283 | int c, o; | |
8be48d92 | 1284 | struct drm_device *dev = fb_helper->dev; |
38651674 DA |
1285 | struct drm_connector *connector; |
1286 | struct drm_connector_helper_funcs *connector_funcs; | |
1287 | struct drm_encoder *encoder; | |
8be48d92 | 1288 | struct drm_fb_helper_crtc *best_crtc; |
38651674 | 1289 | int my_score, best_score, score; |
8be48d92 | 1290 | struct drm_fb_helper_crtc **crtcs, *crtc; |
0b4c0f3f | 1291 | struct drm_fb_helper_connector *fb_helper_conn; |
38651674 | 1292 | |
0b4c0f3f | 1293 | if (n == fb_helper->connector_count) |
38651674 | 1294 | return 0; |
0b4c0f3f DA |
1295 | |
1296 | fb_helper_conn = fb_helper->connector_info[n]; | |
1297 | connector = fb_helper_conn->connector; | |
38651674 DA |
1298 | |
1299 | best_crtcs[n] = NULL; | |
1300 | best_crtc = NULL; | |
8be48d92 | 1301 | best_score = drm_pick_crtcs(fb_helper, best_crtcs, modes, n+1, width, height); |
38651674 DA |
1302 | if (modes[n] == NULL) |
1303 | return best_score; | |
1304 | ||
8be48d92 DA |
1305 | crtcs = kzalloc(dev->mode_config.num_connector * |
1306 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); | |
38651674 DA |
1307 | if (!crtcs) |
1308 | return best_score; | |
1309 | ||
1310 | my_score = 1; | |
1311 | if (connector->status == connector_status_connected) | |
1312 | my_score++; | |
0b4c0f3f | 1313 | if (drm_has_cmdline_mode(fb_helper_conn)) |
38651674 | 1314 | my_score++; |
0b4c0f3f | 1315 | if (drm_has_preferred_mode(fb_helper_conn, width, height)) |
38651674 DA |
1316 | my_score++; |
1317 | ||
1318 | connector_funcs = connector->helper_private; | |
1319 | encoder = connector_funcs->best_encoder(connector); | |
1320 | if (!encoder) | |
1321 | goto out; | |
1322 | ||
38651674 DA |
1323 | /* select a crtc for this connector and then attempt to configure |
1324 | remaining connectors */ | |
8be48d92 DA |
1325 | for (c = 0; c < fb_helper->crtc_count; c++) { |
1326 | crtc = &fb_helper->crtc_info[c]; | |
38651674 DA |
1327 | |
1328 | if ((encoder->possible_crtcs & (1 << c)) == 0) { | |
38651674 DA |
1329 | continue; |
1330 | } | |
1331 | ||
1332 | for (o = 0; o < n; o++) | |
1333 | if (best_crtcs[o] == crtc) | |
1334 | break; | |
1335 | ||
1336 | if (o < n) { | |
1d42bbc8 DA |
1337 | /* ignore cloning unless only a single crtc */ |
1338 | if (fb_helper->crtc_count > 1) | |
1339 | continue; | |
1340 | ||
1341 | if (!drm_mode_equal(modes[o], modes[n])) | |
1342 | continue; | |
38651674 DA |
1343 | } |
1344 | ||
1345 | crtcs[n] = crtc; | |
8be48d92 DA |
1346 | memcpy(crtcs, best_crtcs, n * sizeof(struct drm_fb_helper_crtc *)); |
1347 | score = my_score + drm_pick_crtcs(fb_helper, crtcs, modes, n + 1, | |
38651674 DA |
1348 | width, height); |
1349 | if (score > best_score) { | |
1350 | best_crtc = crtc; | |
1351 | best_score = score; | |
1352 | memcpy(best_crtcs, crtcs, | |
1353 | dev->mode_config.num_connector * | |
8be48d92 | 1354 | sizeof(struct drm_fb_helper_crtc *)); |
38651674 | 1355 | } |
38651674 DA |
1356 | } |
1357 | out: | |
1358 | kfree(crtcs); | |
1359 | return best_score; | |
1360 | } | |
1361 | ||
8be48d92 | 1362 | static void drm_setup_crtcs(struct drm_fb_helper *fb_helper) |
38651674 | 1363 | { |
8be48d92 DA |
1364 | struct drm_device *dev = fb_helper->dev; |
1365 | struct drm_fb_helper_crtc **crtcs; | |
38651674 DA |
1366 | struct drm_display_mode **modes; |
1367 | struct drm_encoder *encoder; | |
8be48d92 | 1368 | struct drm_mode_set *modeset; |
38651674 DA |
1369 | bool *enabled; |
1370 | int width, height; | |
1371 | int i, ret; | |
1372 | ||
1373 | DRM_DEBUG_KMS("\n"); | |
1374 | ||
1375 | width = dev->mode_config.max_width; | |
1376 | height = dev->mode_config.max_height; | |
1377 | ||
1378 | /* clean out all the encoder/crtc combos */ | |
1379 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
1380 | encoder->crtc = NULL; | |
1381 | } | |
1382 | ||
1383 | crtcs = kcalloc(dev->mode_config.num_connector, | |
8be48d92 | 1384 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); |
38651674 DA |
1385 | modes = kcalloc(dev->mode_config.num_connector, |
1386 | sizeof(struct drm_display_mode *), GFP_KERNEL); | |
1387 | enabled = kcalloc(dev->mode_config.num_connector, | |
1388 | sizeof(bool), GFP_KERNEL); | |
1389 | ||
0b4c0f3f | 1390 | drm_enable_connectors(fb_helper, enabled); |
38651674 | 1391 | |
1d42bbc8 DA |
1392 | ret = drm_target_cloned(fb_helper, modes, enabled, width, height); |
1393 | if (!ret) { | |
1394 | ret = drm_target_preferred(fb_helper, modes, enabled, width, height); | |
1395 | if (!ret) | |
1396 | DRM_ERROR("Unable to find initial modes\n"); | |
1397 | } | |
38651674 DA |
1398 | |
1399 | DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height); | |
1400 | ||
8be48d92 DA |
1401 | drm_pick_crtcs(fb_helper, crtcs, modes, 0, width, height); |
1402 | ||
1403 | /* need to set the modesets up here for use later */ | |
1404 | /* fill out the connector<->crtc mappings into the modesets */ | |
1405 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
1406 | modeset = &fb_helper->crtc_info[i].mode_set; | |
1407 | modeset->num_connectors = 0; | |
1408 | } | |
38651674 | 1409 | |
0b4c0f3f | 1410 | for (i = 0; i < fb_helper->connector_count; i++) { |
38651674 | 1411 | struct drm_display_mode *mode = modes[i]; |
8be48d92 DA |
1412 | struct drm_fb_helper_crtc *fb_crtc = crtcs[i]; |
1413 | modeset = &fb_crtc->mode_set; | |
38651674 | 1414 | |
8be48d92 | 1415 | if (mode && fb_crtc) { |
38651674 | 1416 | DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", |
8be48d92 DA |
1417 | mode->name, fb_crtc->mode_set.crtc->base.id); |
1418 | fb_crtc->desired_mode = mode; | |
1419 | if (modeset->mode) | |
1420 | drm_mode_destroy(dev, modeset->mode); | |
1421 | modeset->mode = drm_mode_duplicate(dev, | |
1422 | fb_crtc->desired_mode); | |
0b4c0f3f | 1423 | modeset->connectors[modeset->num_connectors++] = fb_helper->connector_info[i]->connector; |
38651674 | 1424 | } |
38651674 DA |
1425 | } |
1426 | ||
1427 | kfree(crtcs); | |
1428 | kfree(modes); | |
1429 | kfree(enabled); | |
1430 | } | |
1431 | ||
1432 | /** | |
1433 | * drm_helper_initial_config - setup a sane initial connector configuration | |
1434 | * @dev: DRM device | |
1435 | * | |
1436 | * LOCKING: | |
1437 | * Called at init time, must take mode config lock. | |
1438 | * | |
1439 | * Scan the CRTCs and connectors and try to put together an initial setup. | |
1440 | * At the moment, this is a cloned configuration across all heads with | |
1441 | * a new framebuffer object as the backing store. | |
1442 | * | |
1443 | * RETURNS: | |
1444 | * Zero if everything went ok, nonzero otherwise. | |
1445 | */ | |
4abe3520 | 1446 | bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel) |
38651674 | 1447 | { |
8be48d92 | 1448 | struct drm_device *dev = fb_helper->dev; |
38651674 DA |
1449 | int count = 0; |
1450 | ||
1451 | /* disable all the possible outputs/crtcs before entering KMS mode */ | |
8be48d92 | 1452 | drm_helper_disable_unused_functions(fb_helper->dev); |
38651674 | 1453 | |
0b4c0f3f | 1454 | drm_fb_helper_parse_command_line(fb_helper); |
38651674 | 1455 | |
0b4c0f3f DA |
1456 | count = drm_fb_helper_probe_connector_modes(fb_helper, |
1457 | dev->mode_config.max_width, | |
1458 | dev->mode_config.max_height); | |
38651674 DA |
1459 | /* |
1460 | * we shouldn't end up with no modes here. | |
1461 | */ | |
5c4426a7 | 1462 | if (count == 0) { |
eb1f8e4f | 1463 | printk(KERN_INFO "No connectors reported connected with modes\n"); |
5c4426a7 | 1464 | } |
8be48d92 | 1465 | drm_setup_crtcs(fb_helper); |
38651674 | 1466 | |
4abe3520 | 1467 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
38651674 | 1468 | } |
8be48d92 | 1469 | EXPORT_SYMBOL(drm_fb_helper_initial_config); |
38651674 | 1470 | |
eb1f8e4f | 1471 | bool drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper) |
38651674 | 1472 | { |
5c4426a7 | 1473 | int count = 0; |
4abe3520 | 1474 | u32 max_width, max_height, bpp_sel; |
4abe3520 DA |
1475 | bool bound = false, crtcs_bound = false; |
1476 | struct drm_crtc *crtc; | |
5c4426a7 | 1477 | |
eb1f8e4f DA |
1478 | if (!fb_helper->fb) |
1479 | return false; | |
4abe3520 | 1480 | |
4abe3520 DA |
1481 | list_for_each_entry(crtc, &fb_helper->dev->mode_config.crtc_list, head) { |
1482 | if (crtc->fb) | |
1483 | crtcs_bound = true; | |
1484 | if (crtc->fb == fb_helper->fb) | |
1485 | bound = true; | |
1486 | } | |
1487 | ||
eb1f8e4f | 1488 | if (!bound && crtcs_bound) { |
4abe3520 | 1489 | fb_helper->delayed_hotplug = true; |
eb1f8e4f | 1490 | return false; |
4abe3520 | 1491 | } |
eb1f8e4f | 1492 | DRM_DEBUG_KMS("\n"); |
4abe3520 | 1493 | |
eb1f8e4f DA |
1494 | max_width = fb_helper->fb->width; |
1495 | max_height = fb_helper->fb->height; | |
1496 | bpp_sel = fb_helper->fb->bits_per_pixel; | |
5c4426a7 | 1497 | |
eb1f8e4f DA |
1498 | count = drm_fb_helper_probe_connector_modes(fb_helper, max_width, |
1499 | max_height); | |
1500 | drm_setup_crtcs(fb_helper); | |
4abe3520 | 1501 | |
eb1f8e4f | 1502 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
5c4426a7 | 1503 | } |
eb1f8e4f | 1504 | EXPORT_SYMBOL(drm_fb_helper_hotplug_event); |
5c4426a7 | 1505 |