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; |
09f0c489 | 97 | struct drm_connector *connector; |
d50ba256 | 98 | |
0b4c0f3f | 99 | if (!fb_helper_conn) |
8ef8678c | 100 | return false; |
09f0c489 | 101 | connector = fb_helper_conn->connector; |
8ef8678c | 102 | |
0b4c0f3f | 103 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
d50ba256 DA |
104 | if (!mode_option) |
105 | mode_option = fb_mode_option; | |
106 | ||
107 | if (!mode_option) { | |
108 | cmdline_mode->specified = false; | |
109 | return false; | |
110 | } | |
111 | ||
112 | name = mode_option; | |
113 | namelen = strlen(name); | |
114 | for (i = namelen-1; i >= 0; i--) { | |
115 | switch (name[i]) { | |
116 | case '@': | |
117 | namelen = i; | |
118 | if (!refresh_specified && !bpp_specified && | |
119 | !yres_specified) { | |
3b40a443 | 120 | refresh = simple_strtol(&name[i+1], NULL, 10); |
d50ba256 DA |
121 | refresh_specified = 1; |
122 | if (cvt || rb) | |
123 | cvt = 0; | |
124 | } else | |
125 | goto done; | |
126 | break; | |
127 | case '-': | |
128 | namelen = i; | |
129 | if (!bpp_specified && !yres_specified) { | |
3b40a443 | 130 | bpp = simple_strtol(&name[i+1], NULL, 10); |
d50ba256 DA |
131 | bpp_specified = 1; |
132 | if (cvt || rb) | |
133 | cvt = 0; | |
134 | } else | |
135 | goto done; | |
136 | break; | |
137 | case 'x': | |
138 | if (!yres_specified) { | |
3b40a443 | 139 | yres = simple_strtol(&name[i+1], NULL, 10); |
d50ba256 DA |
140 | yres_specified = 1; |
141 | } else | |
142 | goto done; | |
143 | case '0' ... '9': | |
144 | break; | |
145 | case 'M': | |
146 | if (!yres_specified) | |
147 | cvt = 1; | |
148 | break; | |
149 | case 'R': | |
b829e011 | 150 | if (cvt) |
d50ba256 DA |
151 | rb = 1; |
152 | break; | |
153 | case 'm': | |
154 | if (!cvt) | |
155 | margins = 1; | |
156 | break; | |
157 | case 'i': | |
158 | if (!cvt) | |
159 | interlace = 1; | |
160 | break; | |
161 | case 'e': | |
162 | force = DRM_FORCE_ON; | |
163 | break; | |
164 | case 'D': | |
e89a8c90 | 165 | if ((connector->connector_type != DRM_MODE_CONNECTOR_DVII) && |
d50ba256 DA |
166 | (connector->connector_type != DRM_MODE_CONNECTOR_HDMIB)) |
167 | force = DRM_FORCE_ON; | |
168 | else | |
169 | force = DRM_FORCE_ON_DIGITAL; | |
170 | break; | |
171 | case 'd': | |
172 | force = DRM_FORCE_OFF; | |
173 | break; | |
174 | default: | |
175 | goto done; | |
176 | } | |
177 | } | |
178 | if (i < 0 && yres_specified) { | |
3b40a443 | 179 | xres = simple_strtol(name, NULL, 10); |
d50ba256 DA |
180 | res_specified = 1; |
181 | } | |
182 | done: | |
183 | ||
184 | DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n", | |
185 | drm_get_connector_name(connector), xres, yres, | |
186 | (refresh) ? refresh : 60, (rb) ? " reduced blanking" : | |
187 | "", (margins) ? " with margins" : "", (interlace) ? | |
188 | " interlaced" : ""); | |
189 | ||
190 | if (force) { | |
191 | const char *s; | |
192 | switch (force) { | |
193 | case DRM_FORCE_OFF: s = "OFF"; break; | |
194 | case DRM_FORCE_ON_DIGITAL: s = "ON - dig"; break; | |
195 | default: | |
196 | case DRM_FORCE_ON: s = "ON"; break; | |
197 | } | |
198 | ||
199 | DRM_INFO("forcing %s connector %s\n", | |
200 | drm_get_connector_name(connector), s); | |
201 | connector->force = force; | |
202 | } | |
203 | ||
204 | if (res_specified) { | |
205 | cmdline_mode->specified = true; | |
206 | cmdline_mode->xres = xres; | |
207 | cmdline_mode->yres = yres; | |
208 | } | |
209 | ||
210 | if (refresh_specified) { | |
211 | cmdline_mode->refresh_specified = true; | |
212 | cmdline_mode->refresh = refresh; | |
213 | } | |
214 | ||
215 | if (bpp_specified) { | |
216 | cmdline_mode->bpp_specified = true; | |
217 | cmdline_mode->bpp = bpp; | |
218 | } | |
219 | cmdline_mode->rb = rb ? true : false; | |
220 | cmdline_mode->cvt = cvt ? true : false; | |
221 | cmdline_mode->interlace = interlace ? true : false; | |
222 | ||
223 | return true; | |
224 | } | |
225 | ||
0b4c0f3f | 226 | static int drm_fb_helper_parse_command_line(struct drm_fb_helper *fb_helper) |
d50ba256 | 227 | { |
0b4c0f3f DA |
228 | struct drm_fb_helper_connector *fb_helper_conn; |
229 | int i; | |
d50ba256 | 230 | |
0b4c0f3f | 231 | for (i = 0; i < fb_helper->connector_count; i++) { |
d50ba256 DA |
232 | char *option = NULL; |
233 | ||
0b4c0f3f DA |
234 | fb_helper_conn = fb_helper->connector_info[i]; |
235 | ||
d50ba256 | 236 | /* do something on return - turn off connector maybe */ |
0b4c0f3f | 237 | if (fb_get_options(drm_get_connector_name(fb_helper_conn->connector), &option)) |
d50ba256 DA |
238 | continue; |
239 | ||
0b4c0f3f | 240 | drm_fb_helper_connector_parse_command_line(fb_helper_conn, option); |
d50ba256 DA |
241 | } |
242 | return 0; | |
243 | } | |
244 | ||
99231028 JW |
245 | static void drm_fb_helper_save_lut_atomic(struct drm_crtc *crtc, struct drm_fb_helper *helper) |
246 | { | |
247 | uint16_t *r_base, *g_base, *b_base; | |
248 | int i; | |
249 | ||
250 | r_base = crtc->gamma_store; | |
251 | g_base = r_base + crtc->gamma_size; | |
252 | b_base = g_base + crtc->gamma_size; | |
253 | ||
254 | for (i = 0; i < crtc->gamma_size; i++) | |
255 | helper->funcs->gamma_get(crtc, &r_base[i], &g_base[i], &b_base[i], i); | |
256 | } | |
257 | ||
258 | static void drm_fb_helper_restore_lut_atomic(struct drm_crtc *crtc) | |
259 | { | |
260 | uint16_t *r_base, *g_base, *b_base; | |
261 | ||
262 | r_base = crtc->gamma_store; | |
263 | g_base = r_base + crtc->gamma_size; | |
264 | b_base = g_base + crtc->gamma_size; | |
265 | ||
266 | crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size); | |
267 | } | |
268 | ||
1a7aba7f JB |
269 | int drm_fb_helper_debug_enter(struct fb_info *info) |
270 | { | |
271 | struct drm_fb_helper *helper = info->par; | |
272 | struct drm_crtc_helper_funcs *funcs; | |
273 | int i; | |
274 | ||
275 | if (list_empty(&kernel_fb_helper_list)) | |
276 | return false; | |
277 | ||
278 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { | |
279 | for (i = 0; i < helper->crtc_count; i++) { | |
280 | struct drm_mode_set *mode_set = | |
281 | &helper->crtc_info[i].mode_set; | |
282 | ||
283 | if (!mode_set->crtc->enabled) | |
284 | continue; | |
285 | ||
286 | funcs = mode_set->crtc->helper_private; | |
99231028 | 287 | drm_fb_helper_save_lut_atomic(mode_set->crtc, helper); |
1a7aba7f JB |
288 | funcs->mode_set_base_atomic(mode_set->crtc, |
289 | mode_set->fb, | |
290 | mode_set->x, | |
413d45d3 | 291 | mode_set->y, |
21c74a8e | 292 | ENTER_ATOMIC_MODE_SET); |
1a7aba7f JB |
293 | } |
294 | } | |
295 | ||
296 | return 0; | |
297 | } | |
298 | EXPORT_SYMBOL(drm_fb_helper_debug_enter); | |
299 | ||
300 | /* Find the real fb for a given fb helper CRTC */ | |
301 | static struct drm_framebuffer *drm_mode_config_fb(struct drm_crtc *crtc) | |
302 | { | |
303 | struct drm_device *dev = crtc->dev; | |
304 | struct drm_crtc *c; | |
305 | ||
306 | list_for_each_entry(c, &dev->mode_config.crtc_list, head) { | |
307 | if (crtc->base.id == c->base.id) | |
308 | return c->fb; | |
309 | } | |
310 | ||
311 | return NULL; | |
312 | } | |
313 | ||
314 | int drm_fb_helper_debug_leave(struct fb_info *info) | |
315 | { | |
316 | struct drm_fb_helper *helper = info->par; | |
317 | struct drm_crtc *crtc; | |
318 | struct drm_crtc_helper_funcs *funcs; | |
319 | struct drm_framebuffer *fb; | |
320 | int i; | |
321 | ||
322 | for (i = 0; i < helper->crtc_count; i++) { | |
323 | struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set; | |
324 | crtc = mode_set->crtc; | |
325 | funcs = crtc->helper_private; | |
326 | fb = drm_mode_config_fb(crtc); | |
327 | ||
328 | if (!crtc->enabled) | |
329 | continue; | |
330 | ||
331 | if (!fb) { | |
332 | DRM_ERROR("no fb to restore??\n"); | |
333 | continue; | |
334 | } | |
335 | ||
99231028 | 336 | drm_fb_helper_restore_lut_atomic(mode_set->crtc); |
1a7aba7f | 337 | funcs->mode_set_base_atomic(mode_set->crtc, fb, crtc->x, |
21c74a8e | 338 | crtc->y, LEAVE_ATOMIC_MODE_SET); |
1a7aba7f JB |
339 | } |
340 | ||
341 | return 0; | |
342 | } | |
343 | EXPORT_SYMBOL(drm_fb_helper_debug_leave); | |
344 | ||
785b93ef DA |
345 | bool drm_fb_helper_force_kernel_mode(void) |
346 | { | |
347 | int i = 0; | |
348 | bool ret, error = false; | |
349 | struct drm_fb_helper *helper; | |
350 | ||
351 | if (list_empty(&kernel_fb_helper_list)) | |
352 | return false; | |
353 | ||
354 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { | |
355 | for (i = 0; i < helper->crtc_count; i++) { | |
356 | struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set; | |
357 | ret = drm_crtc_helper_set_config(mode_set); | |
358 | if (ret) | |
359 | error = true; | |
360 | } | |
361 | } | |
362 | return error; | |
363 | } | |
364 | ||
365 | int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed, | |
366 | void *panic_str) | |
367 | { | |
fc2362af | 368 | printk(KERN_ERR "panic occurred, switching back to text console\n"); |
785b93ef DA |
369 | return drm_fb_helper_force_kernel_mode(); |
370 | return 0; | |
371 | } | |
372 | EXPORT_SYMBOL(drm_fb_helper_panic); | |
373 | ||
374 | static struct notifier_block paniced = { | |
375 | .notifier_call = drm_fb_helper_panic, | |
376 | }; | |
377 | ||
378 | /** | |
379 | * drm_fb_helper_restore - restore the framebuffer console (kernel) config | |
380 | * | |
381 | * Restore's the kernel's fbcon mode, used for lastclose & panic paths. | |
382 | */ | |
383 | void drm_fb_helper_restore(void) | |
384 | { | |
385 | bool ret; | |
386 | ret = drm_fb_helper_force_kernel_mode(); | |
387 | if (ret == true) | |
388 | DRM_ERROR("Failed to restore crtc configuration\n"); | |
389 | } | |
390 | EXPORT_SYMBOL(drm_fb_helper_restore); | |
391 | ||
bea1d35b | 392 | #ifdef CONFIG_MAGIC_SYSRQ |
785b93ef DA |
393 | static void drm_fb_helper_restore_work_fn(struct work_struct *ignored) |
394 | { | |
395 | drm_fb_helper_restore(); | |
396 | } | |
397 | static DECLARE_WORK(drm_fb_helper_restore_work, drm_fb_helper_restore_work_fn); | |
398 | ||
1495cc9d | 399 | static void drm_fb_helper_sysrq(int dummy1) |
785b93ef DA |
400 | { |
401 | schedule_work(&drm_fb_helper_restore_work); | |
402 | } | |
403 | ||
404 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { | |
405 | .handler = drm_fb_helper_sysrq, | |
406 | .help_msg = "force-fb(V)", | |
407 | .action_msg = "Restore framebuffer console", | |
408 | }; | |
b8c40d62 RD |
409 | #else |
410 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { }; | |
bea1d35b | 411 | #endif |
785b93ef DA |
412 | |
413 | static void drm_fb_helper_on(struct fb_info *info) | |
414 | { | |
415 | struct drm_fb_helper *fb_helper = info->par; | |
416 | struct drm_device *dev = fb_helper->dev; | |
417 | struct drm_crtc *crtc; | |
8be48d92 | 418 | struct drm_crtc_helper_funcs *crtc_funcs; |
023eb571 | 419 | struct drm_connector *connector; |
785b93ef | 420 | struct drm_encoder *encoder; |
023eb571 | 421 | int i, j; |
785b93ef DA |
422 | |
423 | /* | |
424 | * For each CRTC in this fb, turn the crtc on then, | |
425 | * find all associated encoders and turn them on. | |
426 | */ | |
8be48d92 | 427 | mutex_lock(&dev->mode_config.mutex); |
e87b2c42 | 428 | for (i = 0; i < fb_helper->crtc_count; i++) { |
8be48d92 DA |
429 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
430 | crtc_funcs = crtc->helper_private; | |
785b93ef | 431 | |
8be48d92 DA |
432 | if (!crtc->enabled) |
433 | continue; | |
434 | ||
435 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); | |
785b93ef | 436 | |
023eb571 JB |
437 | /* Walk the connectors & encoders on this fb turning them on */ |
438 | for (j = 0; j < fb_helper->connector_count; j++) { | |
439 | connector = fb_helper->connector_info[j]->connector; | |
440 | connector->dpms = DRM_MODE_DPMS_ON; | |
441 | drm_connector_property_set_value(connector, | |
442 | dev->mode_config.dpms_property, | |
443 | DRM_MODE_DPMS_ON); | |
444 | } | |
8be48d92 DA |
445 | /* Found a CRTC on this fb, now find encoders */ |
446 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
447 | if (encoder->crtc == crtc) { | |
448 | struct drm_encoder_helper_funcs *encoder_funcs; | |
785b93ef | 449 | |
8be48d92 DA |
450 | encoder_funcs = encoder->helper_private; |
451 | encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); | |
785b93ef DA |
452 | } |
453 | } | |
454 | } | |
8be48d92 | 455 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
456 | } |
457 | ||
458 | static void drm_fb_helper_off(struct fb_info *info, int dpms_mode) | |
459 | { | |
460 | struct drm_fb_helper *fb_helper = info->par; | |
461 | struct drm_device *dev = fb_helper->dev; | |
462 | struct drm_crtc *crtc; | |
8be48d92 | 463 | struct drm_crtc_helper_funcs *crtc_funcs; |
023eb571 | 464 | struct drm_connector *connector; |
785b93ef | 465 | struct drm_encoder *encoder; |
023eb571 | 466 | int i, j; |
785b93ef DA |
467 | |
468 | /* | |
469 | * For each CRTC in this fb, find all associated encoders | |
470 | * and turn them off, then turn off the CRTC. | |
471 | */ | |
8be48d92 | 472 | mutex_lock(&dev->mode_config.mutex); |
e87b2c42 | 473 | for (i = 0; i < fb_helper->crtc_count; i++) { |
8be48d92 DA |
474 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
475 | crtc_funcs = crtc->helper_private; | |
e87b2c42 | 476 | |
8be48d92 DA |
477 | if (!crtc->enabled) |
478 | continue; | |
e87b2c42 | 479 | |
023eb571 JB |
480 | /* Walk the connectors on this fb and mark them off */ |
481 | for (j = 0; j < fb_helper->connector_count; j++) { | |
482 | connector = fb_helper->connector_info[j]->connector; | |
483 | connector->dpms = dpms_mode; | |
484 | drm_connector_property_set_value(connector, | |
485 | dev->mode_config.dpms_property, | |
486 | dpms_mode); | |
487 | } | |
8be48d92 DA |
488 | /* Found a CRTC on this fb, now find encoders */ |
489 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
490 | if (encoder->crtc == crtc) { | |
491 | struct drm_encoder_helper_funcs *encoder_funcs; | |
e87b2c42 | 492 | |
8be48d92 DA |
493 | encoder_funcs = encoder->helper_private; |
494 | encoder_funcs->dpms(encoder, dpms_mode); | |
e87b2c42 | 495 | } |
785b93ef | 496 | } |
8be48d92 | 497 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF); |
785b93ef | 498 | } |
8be48d92 | 499 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
500 | } |
501 | ||
502 | int drm_fb_helper_blank(int blank, struct fb_info *info) | |
503 | { | |
504 | switch (blank) { | |
731b5a15 | 505 | /* Display: On; HSync: On, VSync: On */ |
785b93ef DA |
506 | case FB_BLANK_UNBLANK: |
507 | drm_fb_helper_on(info); | |
508 | break; | |
731b5a15 | 509 | /* Display: Off; HSync: On, VSync: On */ |
785b93ef | 510 | case FB_BLANK_NORMAL: |
5fd4df4d | 511 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); |
785b93ef | 512 | break; |
731b5a15 | 513 | /* Display: Off; HSync: Off, VSync: On */ |
785b93ef DA |
514 | case FB_BLANK_HSYNC_SUSPEND: |
515 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); | |
516 | break; | |
731b5a15 | 517 | /* Display: Off; HSync: On, VSync: Off */ |
785b93ef DA |
518 | case FB_BLANK_VSYNC_SUSPEND: |
519 | drm_fb_helper_off(info, DRM_MODE_DPMS_SUSPEND); | |
520 | break; | |
731b5a15 | 521 | /* Display: Off; HSync: Off, VSync: Off */ |
785b93ef DA |
522 | case FB_BLANK_POWERDOWN: |
523 | drm_fb_helper_off(info, DRM_MODE_DPMS_OFF); | |
524 | break; | |
525 | } | |
526 | return 0; | |
527 | } | |
528 | EXPORT_SYMBOL(drm_fb_helper_blank); | |
529 | ||
530 | static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) | |
531 | { | |
532 | int i; | |
533 | ||
0b4c0f3f DA |
534 | for (i = 0; i < helper->connector_count; i++) |
535 | kfree(helper->connector_info[i]); | |
536 | kfree(helper->connector_info); | |
785b93ef DA |
537 | for (i = 0; i < helper->crtc_count; i++) |
538 | kfree(helper->crtc_info[i].mode_set.connectors); | |
539 | kfree(helper->crtc_info); | |
540 | } | |
541 | ||
4abe3520 DA |
542 | int drm_fb_helper_init(struct drm_device *dev, |
543 | struct drm_fb_helper *fb_helper, | |
eb1f8e4f | 544 | int crtc_count, int max_conn_count) |
785b93ef | 545 | { |
785b93ef DA |
546 | struct drm_crtc *crtc; |
547 | int ret = 0; | |
548 | int i; | |
549 | ||
4abe3520 | 550 | fb_helper->dev = dev; |
4abe3520 DA |
551 | |
552 | INIT_LIST_HEAD(&fb_helper->kernel_fb_list); | |
553 | ||
554 | fb_helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL); | |
555 | if (!fb_helper->crtc_info) | |
785b93ef DA |
556 | return -ENOMEM; |
557 | ||
4abe3520 DA |
558 | fb_helper->crtc_count = crtc_count; |
559 | fb_helper->connector_info = kcalloc(dev->mode_config.num_connector, sizeof(struct drm_fb_helper_connector *), GFP_KERNEL); | |
560 | if (!fb_helper->connector_info) { | |
561 | kfree(fb_helper->crtc_info); | |
0b4c0f3f DA |
562 | return -ENOMEM; |
563 | } | |
4abe3520 | 564 | fb_helper->connector_count = 0; |
785b93ef DA |
565 | |
566 | for (i = 0; i < crtc_count; i++) { | |
4abe3520 | 567 | fb_helper->crtc_info[i].mode_set.connectors = |
785b93ef DA |
568 | kcalloc(max_conn_count, |
569 | sizeof(struct drm_connector *), | |
570 | GFP_KERNEL); | |
571 | ||
4abe3520 | 572 | if (!fb_helper->crtc_info[i].mode_set.connectors) { |
785b93ef DA |
573 | ret = -ENOMEM; |
574 | goto out_free; | |
575 | } | |
4abe3520 | 576 | fb_helper->crtc_info[i].mode_set.num_connectors = 0; |
785b93ef DA |
577 | } |
578 | ||
579 | i = 0; | |
580 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
4abe3520 DA |
581 | fb_helper->crtc_info[i].crtc_id = crtc->base.id; |
582 | fb_helper->crtc_info[i].mode_set.crtc = crtc; | |
785b93ef DA |
583 | i++; |
584 | } | |
4abe3520 | 585 | fb_helper->conn_limit = max_conn_count; |
785b93ef DA |
586 | return 0; |
587 | out_free: | |
4abe3520 | 588 | drm_fb_helper_crtc_free(fb_helper); |
785b93ef DA |
589 | return -ENOMEM; |
590 | } | |
4abe3520 DA |
591 | EXPORT_SYMBOL(drm_fb_helper_init); |
592 | ||
593 | void drm_fb_helper_fini(struct drm_fb_helper *fb_helper) | |
594 | { | |
595 | if (!list_empty(&fb_helper->kernel_fb_list)) { | |
596 | list_del(&fb_helper->kernel_fb_list); | |
597 | if (list_empty(&kernel_fb_helper_list)) { | |
3da1f33e | 598 | printk(KERN_INFO "drm: unregistered panic notifier\n"); |
4abe3520 DA |
599 | atomic_notifier_chain_unregister(&panic_notifier_list, |
600 | &paniced); | |
601 | unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
602 | } | |
603 | } | |
604 | ||
605 | drm_fb_helper_crtc_free(fb_helper); | |
606 | ||
4abe3520 DA |
607 | } |
608 | EXPORT_SYMBOL(drm_fb_helper_fini); | |
785b93ef | 609 | |
c850cb78 | 610 | static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, |
b8c00ac5 DA |
611 | u16 blue, u16 regno, struct fb_info *info) |
612 | { | |
613 | struct drm_fb_helper *fb_helper = info->par; | |
614 | struct drm_framebuffer *fb = fb_helper->fb; | |
615 | int pindex; | |
616 | ||
c850cb78 DA |
617 | if (info->fix.visual == FB_VISUAL_TRUECOLOR) { |
618 | u32 *palette; | |
619 | u32 value; | |
620 | /* place color in psuedopalette */ | |
621 | if (regno > 16) | |
622 | return -EINVAL; | |
623 | palette = (u32 *)info->pseudo_palette; | |
624 | red >>= (16 - info->var.red.length); | |
625 | green >>= (16 - info->var.green.length); | |
626 | blue >>= (16 - info->var.blue.length); | |
627 | value = (red << info->var.red.offset) | | |
628 | (green << info->var.green.offset) | | |
629 | (blue << info->var.blue.offset); | |
9da12b6a RC |
630 | if (info->var.transp.length > 0) { |
631 | u32 mask = (1 << info->var.transp.length) - 1; | |
632 | mask <<= info->var.transp.offset; | |
633 | value |= mask; | |
634 | } | |
c850cb78 DA |
635 | palette[regno] = value; |
636 | return 0; | |
637 | } | |
638 | ||
b8c00ac5 DA |
639 | pindex = regno; |
640 | ||
641 | if (fb->bits_per_pixel == 16) { | |
642 | pindex = regno << 3; | |
643 | ||
644 | if (fb->depth == 16 && regno > 63) | |
c850cb78 | 645 | return -EINVAL; |
b8c00ac5 | 646 | if (fb->depth == 15 && regno > 31) |
c850cb78 | 647 | return -EINVAL; |
b8c00ac5 DA |
648 | |
649 | if (fb->depth == 16) { | |
650 | u16 r, g, b; | |
651 | int i; | |
652 | if (regno < 32) { | |
653 | for (i = 0; i < 8; i++) | |
654 | fb_helper->funcs->gamma_set(crtc, red, | |
655 | green, blue, pindex + i); | |
656 | } | |
657 | ||
658 | fb_helper->funcs->gamma_get(crtc, &r, | |
659 | &g, &b, | |
660 | pindex >> 1); | |
661 | ||
662 | for (i = 0; i < 4; i++) | |
663 | fb_helper->funcs->gamma_set(crtc, r, | |
664 | green, b, | |
665 | (pindex >> 1) + i); | |
666 | } | |
667 | } | |
668 | ||
669 | if (fb->depth != 16) | |
670 | fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex); | |
c850cb78 | 671 | return 0; |
b8c00ac5 DA |
672 | } |
673 | ||
068143d3 DA |
674 | int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) |
675 | { | |
676 | struct drm_fb_helper *fb_helper = info->par; | |
8be48d92 | 677 | struct drm_crtc_helper_funcs *crtc_funcs; |
068143d3 DA |
678 | u16 *red, *green, *blue, *transp; |
679 | struct drm_crtc *crtc; | |
062ac622 | 680 | int i, j, rc = 0; |
068143d3 DA |
681 | int start; |
682 | ||
8be48d92 DA |
683 | for (i = 0; i < fb_helper->crtc_count; i++) { |
684 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
685 | crtc_funcs = crtc->helper_private; | |
068143d3 DA |
686 | |
687 | red = cmap->red; | |
688 | green = cmap->green; | |
689 | blue = cmap->blue; | |
690 | transp = cmap->transp; | |
691 | start = cmap->start; | |
692 | ||
062ac622 | 693 | for (j = 0; j < cmap->len; j++) { |
068143d3 DA |
694 | u16 hred, hgreen, hblue, htransp = 0xffff; |
695 | ||
696 | hred = *red++; | |
697 | hgreen = *green++; | |
698 | hblue = *blue++; | |
699 | ||
700 | if (transp) | |
701 | htransp = *transp++; | |
702 | ||
c850cb78 DA |
703 | rc = setcolreg(crtc, hred, hgreen, hblue, start++, info); |
704 | if (rc) | |
705 | return rc; | |
068143d3 DA |
706 | } |
707 | crtc_funcs->load_lut(crtc); | |
708 | } | |
709 | return rc; | |
710 | } | |
711 | EXPORT_SYMBOL(drm_fb_helper_setcmap); | |
712 | ||
785b93ef DA |
713 | int drm_fb_helper_check_var(struct fb_var_screeninfo *var, |
714 | struct fb_info *info) | |
715 | { | |
716 | struct drm_fb_helper *fb_helper = info->par; | |
717 | struct drm_framebuffer *fb = fb_helper->fb; | |
718 | int depth; | |
719 | ||
f90ebd9e | 720 | if (var->pixclock != 0 || in_dbg_master()) |
785b93ef DA |
721 | return -EINVAL; |
722 | ||
723 | /* Need to resize the fb object !!! */ | |
509c7d83 DA |
724 | if (var->bits_per_pixel > fb->bits_per_pixel || var->xres > fb->width || var->yres > fb->height) { |
725 | DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb " | |
726 | "object %dx%d-%d > %dx%d-%d\n", var->xres, var->yres, var->bits_per_pixel, | |
727 | fb->width, fb->height, fb->bits_per_pixel); | |
785b93ef DA |
728 | return -EINVAL; |
729 | } | |
730 | ||
731 | switch (var->bits_per_pixel) { | |
732 | case 16: | |
733 | depth = (var->green.length == 6) ? 16 : 15; | |
734 | break; | |
735 | case 32: | |
736 | depth = (var->transp.length > 0) ? 32 : 24; | |
737 | break; | |
738 | default: | |
739 | depth = var->bits_per_pixel; | |
740 | break; | |
741 | } | |
742 | ||
743 | switch (depth) { | |
744 | case 8: | |
745 | var->red.offset = 0; | |
746 | var->green.offset = 0; | |
747 | var->blue.offset = 0; | |
748 | var->red.length = 8; | |
749 | var->green.length = 8; | |
750 | var->blue.length = 8; | |
751 | var->transp.length = 0; | |
752 | var->transp.offset = 0; | |
753 | break; | |
754 | case 15: | |
755 | var->red.offset = 10; | |
756 | var->green.offset = 5; | |
757 | var->blue.offset = 0; | |
758 | var->red.length = 5; | |
759 | var->green.length = 5; | |
760 | var->blue.length = 5; | |
761 | var->transp.length = 1; | |
762 | var->transp.offset = 15; | |
763 | break; | |
764 | case 16: | |
765 | var->red.offset = 11; | |
766 | var->green.offset = 5; | |
767 | var->blue.offset = 0; | |
768 | var->red.length = 5; | |
769 | var->green.length = 6; | |
770 | var->blue.length = 5; | |
771 | var->transp.length = 0; | |
772 | var->transp.offset = 0; | |
773 | break; | |
774 | case 24: | |
775 | var->red.offset = 16; | |
776 | var->green.offset = 8; | |
777 | var->blue.offset = 0; | |
778 | var->red.length = 8; | |
779 | var->green.length = 8; | |
780 | var->blue.length = 8; | |
781 | var->transp.length = 0; | |
782 | var->transp.offset = 0; | |
783 | break; | |
784 | case 32: | |
785 | var->red.offset = 16; | |
786 | var->green.offset = 8; | |
787 | var->blue.offset = 0; | |
788 | var->red.length = 8; | |
789 | var->green.length = 8; | |
790 | var->blue.length = 8; | |
791 | var->transp.length = 8; | |
792 | var->transp.offset = 24; | |
793 | break; | |
794 | default: | |
795 | return -EINVAL; | |
796 | } | |
797 | return 0; | |
798 | } | |
799 | EXPORT_SYMBOL(drm_fb_helper_check_var); | |
800 | ||
801 | /* this will let fbcon do the mode init */ | |
802 | int drm_fb_helper_set_par(struct fb_info *info) | |
803 | { | |
804 | struct drm_fb_helper *fb_helper = info->par; | |
805 | struct drm_device *dev = fb_helper->dev; | |
806 | struct fb_var_screeninfo *var = &info->var; | |
807 | struct drm_crtc *crtc; | |
808 | int ret; | |
809 | int i; | |
810 | ||
5349ef31 | 811 | if (var->pixclock != 0) { |
172e91f5 | 812 | DRM_ERROR("PIXEL CLOCK SET\n"); |
785b93ef DA |
813 | return -EINVAL; |
814 | } | |
815 | ||
8be48d92 DA |
816 | mutex_lock(&dev->mode_config.mutex); |
817 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
818 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
0b4c0f3f DA |
819 | ret = crtc->funcs->set_config(&fb_helper->crtc_info[i].mode_set); |
820 | if (ret) { | |
785b93ef | 821 | mutex_unlock(&dev->mode_config.mutex); |
0b4c0f3f | 822 | return ret; |
785b93ef DA |
823 | } |
824 | } | |
8be48d92 | 825 | mutex_unlock(&dev->mode_config.mutex); |
4abe3520 DA |
826 | |
827 | if (fb_helper->delayed_hotplug) { | |
828 | fb_helper->delayed_hotplug = false; | |
eb1f8e4f | 829 | drm_fb_helper_hotplug_event(fb_helper); |
4abe3520 | 830 | } |
785b93ef DA |
831 | return 0; |
832 | } | |
833 | EXPORT_SYMBOL(drm_fb_helper_set_par); | |
834 | ||
835 | int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, | |
836 | struct fb_info *info) | |
837 | { | |
838 | struct drm_fb_helper *fb_helper = info->par; | |
839 | struct drm_device *dev = fb_helper->dev; | |
840 | struct drm_mode_set *modeset; | |
841 | struct drm_crtc *crtc; | |
842 | int ret = 0; | |
843 | int i; | |
844 | ||
8be48d92 DA |
845 | mutex_lock(&dev->mode_config.mutex); |
846 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
847 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
785b93ef DA |
848 | |
849 | modeset = &fb_helper->crtc_info[i].mode_set; | |
850 | ||
851 | modeset->x = var->xoffset; | |
852 | modeset->y = var->yoffset; | |
853 | ||
854 | if (modeset->num_connectors) { | |
785b93ef | 855 | ret = crtc->funcs->set_config(modeset); |
785b93ef DA |
856 | if (!ret) { |
857 | info->var.xoffset = var->xoffset; | |
858 | info->var.yoffset = var->yoffset; | |
859 | } | |
860 | } | |
861 | } | |
8be48d92 | 862 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
863 | return ret; |
864 | } | |
865 | EXPORT_SYMBOL(drm_fb_helper_pan_display); | |
866 | ||
8be48d92 DA |
867 | int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, |
868 | int preferred_bpp) | |
785b93ef | 869 | { |
785b93ef DA |
870 | int new_fb = 0; |
871 | int crtc_count = 0; | |
4abe3520 | 872 | int i; |
785b93ef | 873 | struct fb_info *info; |
38651674 | 874 | struct drm_fb_helper_surface_size sizes; |
8be48d92 | 875 | int gamma_size = 0; |
38651674 DA |
876 | |
877 | memset(&sizes, 0, sizeof(struct drm_fb_helper_surface_size)); | |
878 | sizes.surface_depth = 24; | |
879 | sizes.surface_bpp = 32; | |
880 | sizes.fb_width = (unsigned)-1; | |
881 | sizes.fb_height = (unsigned)-1; | |
785b93ef | 882 | |
b8c00ac5 DA |
883 | /* if driver picks 8 or 16 by default use that |
884 | for both depth/bpp */ | |
38651674 DA |
885 | if (preferred_bpp != sizes.surface_bpp) { |
886 | sizes.surface_depth = sizes.surface_bpp = preferred_bpp; | |
b8c00ac5 | 887 | } |
785b93ef | 888 | /* first up get a count of crtcs now in use and new min/maxes width/heights */ |
0b4c0f3f DA |
889 | for (i = 0; i < fb_helper->connector_count; i++) { |
890 | struct drm_fb_helper_connector *fb_helper_conn = fb_helper->connector_info[i]; | |
8ef8678c DA |
891 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
892 | ||
0b4c0f3f | 893 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
d50ba256 DA |
894 | |
895 | if (cmdline_mode->bpp_specified) { | |
896 | switch (cmdline_mode->bpp) { | |
897 | case 8: | |
38651674 | 898 | sizes.surface_depth = sizes.surface_bpp = 8; |
d50ba256 DA |
899 | break; |
900 | case 15: | |
38651674 DA |
901 | sizes.surface_depth = 15; |
902 | sizes.surface_bpp = 16; | |
d50ba256 DA |
903 | break; |
904 | case 16: | |
38651674 | 905 | sizes.surface_depth = sizes.surface_bpp = 16; |
d50ba256 DA |
906 | break; |
907 | case 24: | |
38651674 | 908 | sizes.surface_depth = sizes.surface_bpp = 24; |
d50ba256 DA |
909 | break; |
910 | case 32: | |
38651674 DA |
911 | sizes.surface_depth = 24; |
912 | sizes.surface_bpp = 32; | |
d50ba256 DA |
913 | break; |
914 | } | |
915 | break; | |
916 | } | |
917 | } | |
918 | ||
8be48d92 DA |
919 | crtc_count = 0; |
920 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
921 | struct drm_display_mode *desired_mode; | |
922 | desired_mode = fb_helper->crtc_info[i].desired_mode; | |
923 | ||
924 | if (desired_mode) { | |
925 | if (gamma_size == 0) | |
926 | gamma_size = fb_helper->crtc_info[i].mode_set.crtc->gamma_size; | |
927 | if (desired_mode->hdisplay < sizes.fb_width) | |
928 | sizes.fb_width = desired_mode->hdisplay; | |
929 | if (desired_mode->vdisplay < sizes.fb_height) | |
930 | sizes.fb_height = desired_mode->vdisplay; | |
931 | if (desired_mode->hdisplay > sizes.surface_width) | |
932 | sizes.surface_width = desired_mode->hdisplay; | |
933 | if (desired_mode->vdisplay > sizes.surface_height) | |
934 | sizes.surface_height = desired_mode->vdisplay; | |
785b93ef DA |
935 | crtc_count++; |
936 | } | |
937 | } | |
938 | ||
38651674 | 939 | if (crtc_count == 0 || sizes.fb_width == -1 || sizes.fb_height == -1) { |
785b93ef DA |
940 | /* hmm everyone went away - assume VGA cable just fell out |
941 | and will come back later. */ | |
eb1f8e4f | 942 | DRM_INFO("Cannot find any crtc or sizes - going 1024x768\n"); |
19b4b445 DA |
943 | sizes.fb_width = sizes.surface_width = 1024; |
944 | sizes.fb_height = sizes.surface_height = 768; | |
785b93ef DA |
945 | } |
946 | ||
38651674 | 947 | /* push down into drivers */ |
4abe3520 | 948 | new_fb = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes); |
38651674 DA |
949 | if (new_fb < 0) |
950 | return new_fb; | |
785b93ef | 951 | |
38651674 | 952 | info = fb_helper->fbdev; |
785b93ef | 953 | |
8be48d92 DA |
954 | /* set the fb pointer */ |
955 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
956 | fb_helper->crtc_info[i].mode_set.fb = fb_helper->fb; | |
785b93ef | 957 | } |
785b93ef DA |
958 | |
959 | if (new_fb) { | |
5349ef31 | 960 | info->var.pixclock = 0; |
3bea21b6 | 961 | if (register_framebuffer(info) < 0) { |
785b93ef | 962 | return -EINVAL; |
3bea21b6 | 963 | } |
38651674 DA |
964 | |
965 | printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, | |
966 | info->fix.id); | |
967 | ||
785b93ef DA |
968 | } else { |
969 | drm_fb_helper_set_par(info); | |
970 | } | |
785b93ef DA |
971 | |
972 | /* Switch back to kernel console on panic */ | |
973 | /* multi card linked list maybe */ | |
974 | if (list_empty(&kernel_fb_helper_list)) { | |
3da1f33e | 975 | printk(KERN_INFO "drm: registered panic notifier\n"); |
785b93ef DA |
976 | atomic_notifier_chain_register(&panic_notifier_list, |
977 | &paniced); | |
978 | register_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
979 | } | |
38651674 DA |
980 | if (new_fb) |
981 | list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list); | |
982 | ||
785b93ef DA |
983 | return 0; |
984 | } | |
985 | EXPORT_SYMBOL(drm_fb_helper_single_fb_probe); | |
986 | ||
3632ef89 DA |
987 | void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, |
988 | uint32_t depth) | |
989 | { | |
990 | info->fix.type = FB_TYPE_PACKED_PIXELS; | |
991 | info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR : | |
992 | FB_VISUAL_TRUECOLOR; | |
993 | info->fix.mmio_start = 0; | |
994 | info->fix.mmio_len = 0; | |
995 | info->fix.type_aux = 0; | |
996 | info->fix.xpanstep = 1; /* doing it in hw */ | |
997 | info->fix.ypanstep = 1; /* doing it in hw */ | |
998 | info->fix.ywrapstep = 0; | |
999 | info->fix.accel = FB_ACCEL_NONE; | |
1000 | info->fix.type_aux = 0; | |
1001 | ||
1002 | info->fix.line_length = pitch; | |
1003 | return; | |
1004 | } | |
1005 | EXPORT_SYMBOL(drm_fb_helper_fill_fix); | |
1006 | ||
38651674 | 1007 | void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, |
785b93ef DA |
1008 | uint32_t fb_width, uint32_t fb_height) |
1009 | { | |
38651674 DA |
1010 | struct drm_framebuffer *fb = fb_helper->fb; |
1011 | info->pseudo_palette = fb_helper->pseudo_palette; | |
785b93ef DA |
1012 | info->var.xres_virtual = fb->width; |
1013 | info->var.yres_virtual = fb->height; | |
1014 | info->var.bits_per_pixel = fb->bits_per_pixel; | |
57084d05 | 1015 | info->var.accel_flags = FB_ACCELF_TEXT; |
785b93ef DA |
1016 | info->var.xoffset = 0; |
1017 | info->var.yoffset = 0; | |
1018 | info->var.activate = FB_ACTIVATE_NOW; | |
1019 | info->var.height = -1; | |
1020 | info->var.width = -1; | |
1021 | ||
1022 | switch (fb->depth) { | |
1023 | case 8: | |
1024 | info->var.red.offset = 0; | |
1025 | info->var.green.offset = 0; | |
1026 | info->var.blue.offset = 0; | |
1027 | info->var.red.length = 8; /* 8bit DAC */ | |
1028 | info->var.green.length = 8; | |
1029 | info->var.blue.length = 8; | |
1030 | info->var.transp.offset = 0; | |
1031 | info->var.transp.length = 0; | |
1032 | break; | |
1033 | case 15: | |
1034 | info->var.red.offset = 10; | |
1035 | info->var.green.offset = 5; | |
1036 | info->var.blue.offset = 0; | |
1037 | info->var.red.length = 5; | |
1038 | info->var.green.length = 5; | |
1039 | info->var.blue.length = 5; | |
1040 | info->var.transp.offset = 15; | |
1041 | info->var.transp.length = 1; | |
1042 | break; | |
1043 | case 16: | |
1044 | info->var.red.offset = 11; | |
1045 | info->var.green.offset = 5; | |
1046 | info->var.blue.offset = 0; | |
1047 | info->var.red.length = 5; | |
1048 | info->var.green.length = 6; | |
1049 | info->var.blue.length = 5; | |
1050 | info->var.transp.offset = 0; | |
1051 | break; | |
1052 | case 24: | |
1053 | info->var.red.offset = 16; | |
1054 | info->var.green.offset = 8; | |
1055 | info->var.blue.offset = 0; | |
1056 | info->var.red.length = 8; | |
1057 | info->var.green.length = 8; | |
1058 | info->var.blue.length = 8; | |
1059 | info->var.transp.offset = 0; | |
1060 | info->var.transp.length = 0; | |
1061 | break; | |
1062 | case 32: | |
1063 | info->var.red.offset = 16; | |
1064 | info->var.green.offset = 8; | |
1065 | info->var.blue.offset = 0; | |
1066 | info->var.red.length = 8; | |
1067 | info->var.green.length = 8; | |
1068 | info->var.blue.length = 8; | |
1069 | info->var.transp.offset = 24; | |
1070 | info->var.transp.length = 8; | |
1071 | break; | |
1072 | default: | |
1073 | break; | |
1074 | } | |
1075 | ||
1076 | info->var.xres = fb_width; | |
1077 | info->var.yres = fb_height; | |
1078 | } | |
1079 | EXPORT_SYMBOL(drm_fb_helper_fill_var); | |
38651674 | 1080 | |
0b4c0f3f DA |
1081 | static int drm_fb_helper_probe_connector_modes(struct drm_fb_helper *fb_helper, |
1082 | uint32_t maxX, | |
1083 | uint32_t maxY) | |
38651674 DA |
1084 | { |
1085 | struct drm_connector *connector; | |
1086 | int count = 0; | |
0b4c0f3f | 1087 | int i; |
38651674 | 1088 | |
0b4c0f3f DA |
1089 | for (i = 0; i < fb_helper->connector_count; i++) { |
1090 | connector = fb_helper->connector_info[i]->connector; | |
38651674 DA |
1091 | count += connector->funcs->fill_modes(connector, maxX, maxY); |
1092 | } | |
1093 | ||
1094 | return count; | |
1095 | } | |
1096 | ||
0b4c0f3f | 1097 | static struct drm_display_mode *drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, int width, int height) |
38651674 DA |
1098 | { |
1099 | struct drm_display_mode *mode; | |
1100 | ||
0b4c0f3f | 1101 | list_for_each_entry(mode, &fb_connector->connector->modes, head) { |
38651674 DA |
1102 | if (drm_mode_width(mode) > width || |
1103 | drm_mode_height(mode) > height) | |
1104 | continue; | |
1105 | if (mode->type & DRM_MODE_TYPE_PREFERRED) | |
1106 | return mode; | |
1107 | } | |
1108 | return NULL; | |
1109 | } | |
1110 | ||
0b4c0f3f | 1111 | static bool drm_has_cmdline_mode(struct drm_fb_helper_connector *fb_connector) |
38651674 | 1112 | { |
38651674 | 1113 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
0b4c0f3f | 1114 | cmdline_mode = &fb_connector->cmdline_mode; |
38651674 DA |
1115 | return cmdline_mode->specified; |
1116 | } | |
1117 | ||
0b4c0f3f DA |
1118 | static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn, |
1119 | int width, int height) | |
38651674 | 1120 | { |
38651674 DA |
1121 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
1122 | struct drm_display_mode *mode = NULL; | |
1123 | ||
0b4c0f3f | 1124 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
38651674 DA |
1125 | if (cmdline_mode->specified == false) |
1126 | return mode; | |
1127 | ||
1128 | /* attempt to find a matching mode in the list of modes | |
1129 | * we have gotten so far, if not add a CVT mode that conforms | |
1130 | */ | |
1131 | if (cmdline_mode->rb || cmdline_mode->margins) | |
1132 | goto create_mode; | |
1133 | ||
0b4c0f3f | 1134 | list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { |
38651674 DA |
1135 | /* check width/height */ |
1136 | if (mode->hdisplay != cmdline_mode->xres || | |
1137 | mode->vdisplay != cmdline_mode->yres) | |
1138 | continue; | |
1139 | ||
1140 | if (cmdline_mode->refresh_specified) { | |
1141 | if (mode->vrefresh != cmdline_mode->refresh) | |
1142 | continue; | |
1143 | } | |
1144 | ||
1145 | if (cmdline_mode->interlace) { | |
1146 | if (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) | |
1147 | continue; | |
1148 | } | |
1149 | return mode; | |
1150 | } | |
1151 | ||
1152 | create_mode: | |
b829e011 AJ |
1153 | if (cmdline_mode->cvt) |
1154 | mode = drm_cvt_mode(fb_helper_conn->connector->dev, | |
1155 | cmdline_mode->xres, cmdline_mode->yres, | |
1156 | cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60, | |
1157 | cmdline_mode->rb, cmdline_mode->interlace, | |
1158 | cmdline_mode->margins); | |
1159 | else | |
1160 | mode = drm_gtf_mode(fb_helper_conn->connector->dev, | |
1161 | cmdline_mode->xres, cmdline_mode->yres, | |
1162 | cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60, | |
1163 | cmdline_mode->interlace, | |
1164 | cmdline_mode->margins); | |
38651674 | 1165 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
0b4c0f3f | 1166 | list_add(&mode->head, &fb_helper_conn->connector->modes); |
38651674 DA |
1167 | return mode; |
1168 | } | |
1169 | ||
1170 | static bool drm_connector_enabled(struct drm_connector *connector, bool strict) | |
1171 | { | |
1172 | bool enable; | |
1173 | ||
1174 | if (strict) { | |
1175 | enable = connector->status == connector_status_connected; | |
1176 | } else { | |
1177 | enable = connector->status != connector_status_disconnected; | |
1178 | } | |
1179 | return enable; | |
1180 | } | |
1181 | ||
0b4c0f3f DA |
1182 | static void drm_enable_connectors(struct drm_fb_helper *fb_helper, |
1183 | bool *enabled) | |
38651674 DA |
1184 | { |
1185 | bool any_enabled = false; | |
1186 | struct drm_connector *connector; | |
1187 | int i = 0; | |
1188 | ||
0b4c0f3f DA |
1189 | for (i = 0; i < fb_helper->connector_count; i++) { |
1190 | connector = fb_helper->connector_info[i]->connector; | |
38651674 DA |
1191 | enabled[i] = drm_connector_enabled(connector, true); |
1192 | DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, | |
1193 | enabled[i] ? "yes" : "no"); | |
1194 | any_enabled |= enabled[i]; | |
38651674 DA |
1195 | } |
1196 | ||
1197 | if (any_enabled) | |
1198 | return; | |
1199 | ||
0b4c0f3f DA |
1200 | for (i = 0; i < fb_helper->connector_count; i++) { |
1201 | connector = fb_helper->connector_info[i]->connector; | |
38651674 | 1202 | enabled[i] = drm_connector_enabled(connector, false); |
38651674 DA |
1203 | } |
1204 | } | |
1205 | ||
1d42bbc8 DA |
1206 | static bool drm_target_cloned(struct drm_fb_helper *fb_helper, |
1207 | struct drm_display_mode **modes, | |
1208 | bool *enabled, int width, int height) | |
1209 | { | |
1210 | int count, i, j; | |
1211 | bool can_clone = false; | |
1212 | struct drm_fb_helper_connector *fb_helper_conn; | |
1213 | struct drm_display_mode *dmt_mode, *mode; | |
1214 | ||
1215 | /* only contemplate cloning in the single crtc case */ | |
1216 | if (fb_helper->crtc_count > 1) | |
1217 | return false; | |
1218 | ||
1219 | count = 0; | |
1220 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1221 | if (enabled[i]) | |
1222 | count++; | |
1223 | } | |
1224 | ||
1225 | /* only contemplate cloning if more than one connector is enabled */ | |
1226 | if (count <= 1) | |
1227 | return false; | |
1228 | ||
1229 | /* check the command line or if nothing common pick 1024x768 */ | |
1230 | can_clone = true; | |
1231 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1232 | if (!enabled[i]) | |
1233 | continue; | |
1234 | fb_helper_conn = fb_helper->connector_info[i]; | |
1235 | modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); | |
1236 | if (!modes[i]) { | |
1237 | can_clone = false; | |
1238 | break; | |
1239 | } | |
1240 | for (j = 0; j < i; j++) { | |
1241 | if (!enabled[j]) | |
1242 | continue; | |
1243 | if (!drm_mode_equal(modes[j], modes[i])) | |
1244 | can_clone = false; | |
1245 | } | |
1246 | } | |
1247 | ||
1248 | if (can_clone) { | |
1249 | DRM_DEBUG_KMS("can clone using command line\n"); | |
1250 | return true; | |
1251 | } | |
1252 | ||
1253 | /* try and find a 1024x768 mode on each connector */ | |
1254 | can_clone = true; | |
1255 | dmt_mode = drm_mode_find_dmt(fb_helper->dev, 1024, 768, 60); | |
1256 | ||
1257 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1258 | ||
1259 | if (!enabled[i]) | |
1260 | continue; | |
1261 | ||
1262 | fb_helper_conn = fb_helper->connector_info[i]; | |
1263 | list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { | |
1264 | if (drm_mode_equal(mode, dmt_mode)) | |
1265 | modes[i] = mode; | |
1266 | } | |
1267 | if (!modes[i]) | |
1268 | can_clone = false; | |
1269 | } | |
1270 | ||
1271 | if (can_clone) { | |
1272 | DRM_DEBUG_KMS("can clone using 1024x768\n"); | |
1273 | return true; | |
1274 | } | |
1275 | DRM_INFO("kms: can't enable cloning when we probably wanted to.\n"); | |
1276 | return false; | |
1277 | } | |
1278 | ||
0b4c0f3f | 1279 | static bool drm_target_preferred(struct drm_fb_helper *fb_helper, |
38651674 DA |
1280 | struct drm_display_mode **modes, |
1281 | bool *enabled, int width, int height) | |
1282 | { | |
0b4c0f3f DA |
1283 | struct drm_fb_helper_connector *fb_helper_conn; |
1284 | int i; | |
38651674 | 1285 | |
0b4c0f3f DA |
1286 | for (i = 0; i < fb_helper->connector_count; i++) { |
1287 | fb_helper_conn = fb_helper->connector_info[i]; | |
38651674 | 1288 | |
0b4c0f3f | 1289 | if (enabled[i] == false) |
38651674 | 1290 | continue; |
38651674 DA |
1291 | |
1292 | DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n", | |
0b4c0f3f | 1293 | fb_helper_conn->connector->base.id); |
38651674 DA |
1294 | |
1295 | /* got for command line mode first */ | |
0b4c0f3f | 1296 | modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); |
38651674 DA |
1297 | if (!modes[i]) { |
1298 | DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", | |
0b4c0f3f DA |
1299 | fb_helper_conn->connector->base.id); |
1300 | modes[i] = drm_has_preferred_mode(fb_helper_conn, width, height); | |
38651674 DA |
1301 | } |
1302 | /* No preferred modes, pick one off the list */ | |
0b4c0f3f DA |
1303 | if (!modes[i] && !list_empty(&fb_helper_conn->connector->modes)) { |
1304 | list_for_each_entry(modes[i], &fb_helper_conn->connector->modes, head) | |
38651674 DA |
1305 | break; |
1306 | } | |
1307 | DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : | |
1308 | "none"); | |
38651674 DA |
1309 | } |
1310 | return true; | |
1311 | } | |
1312 | ||
8be48d92 DA |
1313 | static int drm_pick_crtcs(struct drm_fb_helper *fb_helper, |
1314 | struct drm_fb_helper_crtc **best_crtcs, | |
38651674 DA |
1315 | struct drm_display_mode **modes, |
1316 | int n, int width, int height) | |
1317 | { | |
1318 | int c, o; | |
8be48d92 | 1319 | struct drm_device *dev = fb_helper->dev; |
38651674 DA |
1320 | struct drm_connector *connector; |
1321 | struct drm_connector_helper_funcs *connector_funcs; | |
1322 | struct drm_encoder *encoder; | |
8be48d92 | 1323 | struct drm_fb_helper_crtc *best_crtc; |
38651674 | 1324 | int my_score, best_score, score; |
8be48d92 | 1325 | struct drm_fb_helper_crtc **crtcs, *crtc; |
0b4c0f3f | 1326 | struct drm_fb_helper_connector *fb_helper_conn; |
38651674 | 1327 | |
0b4c0f3f | 1328 | if (n == fb_helper->connector_count) |
38651674 | 1329 | return 0; |
0b4c0f3f DA |
1330 | |
1331 | fb_helper_conn = fb_helper->connector_info[n]; | |
1332 | connector = fb_helper_conn->connector; | |
38651674 DA |
1333 | |
1334 | best_crtcs[n] = NULL; | |
1335 | best_crtc = NULL; | |
8be48d92 | 1336 | best_score = drm_pick_crtcs(fb_helper, best_crtcs, modes, n+1, width, height); |
38651674 DA |
1337 | if (modes[n] == NULL) |
1338 | return best_score; | |
1339 | ||
8be48d92 DA |
1340 | crtcs = kzalloc(dev->mode_config.num_connector * |
1341 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); | |
38651674 DA |
1342 | if (!crtcs) |
1343 | return best_score; | |
1344 | ||
1345 | my_score = 1; | |
1346 | if (connector->status == connector_status_connected) | |
1347 | my_score++; | |
0b4c0f3f | 1348 | if (drm_has_cmdline_mode(fb_helper_conn)) |
38651674 | 1349 | my_score++; |
0b4c0f3f | 1350 | if (drm_has_preferred_mode(fb_helper_conn, width, height)) |
38651674 DA |
1351 | my_score++; |
1352 | ||
1353 | connector_funcs = connector->helper_private; | |
1354 | encoder = connector_funcs->best_encoder(connector); | |
1355 | if (!encoder) | |
1356 | goto out; | |
1357 | ||
38651674 DA |
1358 | /* select a crtc for this connector and then attempt to configure |
1359 | remaining connectors */ | |
8be48d92 DA |
1360 | for (c = 0; c < fb_helper->crtc_count; c++) { |
1361 | crtc = &fb_helper->crtc_info[c]; | |
38651674 DA |
1362 | |
1363 | if ((encoder->possible_crtcs & (1 << c)) == 0) { | |
38651674 DA |
1364 | continue; |
1365 | } | |
1366 | ||
1367 | for (o = 0; o < n; o++) | |
1368 | if (best_crtcs[o] == crtc) | |
1369 | break; | |
1370 | ||
1371 | if (o < n) { | |
1d42bbc8 DA |
1372 | /* ignore cloning unless only a single crtc */ |
1373 | if (fb_helper->crtc_count > 1) | |
1374 | continue; | |
1375 | ||
1376 | if (!drm_mode_equal(modes[o], modes[n])) | |
1377 | continue; | |
38651674 DA |
1378 | } |
1379 | ||
1380 | crtcs[n] = crtc; | |
8be48d92 DA |
1381 | memcpy(crtcs, best_crtcs, n * sizeof(struct drm_fb_helper_crtc *)); |
1382 | score = my_score + drm_pick_crtcs(fb_helper, crtcs, modes, n + 1, | |
38651674 DA |
1383 | width, height); |
1384 | if (score > best_score) { | |
1385 | best_crtc = crtc; | |
1386 | best_score = score; | |
1387 | memcpy(best_crtcs, crtcs, | |
1388 | dev->mode_config.num_connector * | |
8be48d92 | 1389 | sizeof(struct drm_fb_helper_crtc *)); |
38651674 | 1390 | } |
38651674 DA |
1391 | } |
1392 | out: | |
1393 | kfree(crtcs); | |
1394 | return best_score; | |
1395 | } | |
1396 | ||
8be48d92 | 1397 | static void drm_setup_crtcs(struct drm_fb_helper *fb_helper) |
38651674 | 1398 | { |
8be48d92 DA |
1399 | struct drm_device *dev = fb_helper->dev; |
1400 | struct drm_fb_helper_crtc **crtcs; | |
38651674 DA |
1401 | struct drm_display_mode **modes; |
1402 | struct drm_encoder *encoder; | |
8be48d92 | 1403 | struct drm_mode_set *modeset; |
38651674 DA |
1404 | bool *enabled; |
1405 | int width, height; | |
1406 | int i, ret; | |
1407 | ||
1408 | DRM_DEBUG_KMS("\n"); | |
1409 | ||
1410 | width = dev->mode_config.max_width; | |
1411 | height = dev->mode_config.max_height; | |
1412 | ||
1413 | /* clean out all the encoder/crtc combos */ | |
1414 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
1415 | encoder->crtc = NULL; | |
1416 | } | |
1417 | ||
1418 | crtcs = kcalloc(dev->mode_config.num_connector, | |
8be48d92 | 1419 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); |
38651674 DA |
1420 | modes = kcalloc(dev->mode_config.num_connector, |
1421 | sizeof(struct drm_display_mode *), GFP_KERNEL); | |
1422 | enabled = kcalloc(dev->mode_config.num_connector, | |
1423 | sizeof(bool), GFP_KERNEL); | |
1424 | ||
0b4c0f3f | 1425 | drm_enable_connectors(fb_helper, enabled); |
38651674 | 1426 | |
1d42bbc8 DA |
1427 | ret = drm_target_cloned(fb_helper, modes, enabled, width, height); |
1428 | if (!ret) { | |
1429 | ret = drm_target_preferred(fb_helper, modes, enabled, width, height); | |
1430 | if (!ret) | |
1431 | DRM_ERROR("Unable to find initial modes\n"); | |
1432 | } | |
38651674 DA |
1433 | |
1434 | DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height); | |
1435 | ||
8be48d92 DA |
1436 | drm_pick_crtcs(fb_helper, crtcs, modes, 0, width, height); |
1437 | ||
1438 | /* need to set the modesets up here for use later */ | |
1439 | /* fill out the connector<->crtc mappings into the modesets */ | |
1440 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
1441 | modeset = &fb_helper->crtc_info[i].mode_set; | |
1442 | modeset->num_connectors = 0; | |
1443 | } | |
38651674 | 1444 | |
0b4c0f3f | 1445 | for (i = 0; i < fb_helper->connector_count; i++) { |
38651674 | 1446 | struct drm_display_mode *mode = modes[i]; |
8be48d92 DA |
1447 | struct drm_fb_helper_crtc *fb_crtc = crtcs[i]; |
1448 | modeset = &fb_crtc->mode_set; | |
38651674 | 1449 | |
8be48d92 | 1450 | if (mode && fb_crtc) { |
38651674 | 1451 | DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", |
8be48d92 DA |
1452 | mode->name, fb_crtc->mode_set.crtc->base.id); |
1453 | fb_crtc->desired_mode = mode; | |
1454 | if (modeset->mode) | |
1455 | drm_mode_destroy(dev, modeset->mode); | |
1456 | modeset->mode = drm_mode_duplicate(dev, | |
1457 | fb_crtc->desired_mode); | |
0b4c0f3f | 1458 | modeset->connectors[modeset->num_connectors++] = fb_helper->connector_info[i]->connector; |
38651674 | 1459 | } |
38651674 DA |
1460 | } |
1461 | ||
1462 | kfree(crtcs); | |
1463 | kfree(modes); | |
1464 | kfree(enabled); | |
1465 | } | |
1466 | ||
1467 | /** | |
1468 | * drm_helper_initial_config - setup a sane initial connector configuration | |
1469 | * @dev: DRM device | |
1470 | * | |
1471 | * LOCKING: | |
1472 | * Called at init time, must take mode config lock. | |
1473 | * | |
1474 | * Scan the CRTCs and connectors and try to put together an initial setup. | |
1475 | * At the moment, this is a cloned configuration across all heads with | |
1476 | * a new framebuffer object as the backing store. | |
1477 | * | |
1478 | * RETURNS: | |
1479 | * Zero if everything went ok, nonzero otherwise. | |
1480 | */ | |
4abe3520 | 1481 | bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel) |
38651674 | 1482 | { |
8be48d92 | 1483 | struct drm_device *dev = fb_helper->dev; |
38651674 DA |
1484 | int count = 0; |
1485 | ||
1486 | /* disable all the possible outputs/crtcs before entering KMS mode */ | |
8be48d92 | 1487 | drm_helper_disable_unused_functions(fb_helper->dev); |
38651674 | 1488 | |
0b4c0f3f | 1489 | drm_fb_helper_parse_command_line(fb_helper); |
38651674 | 1490 | |
0b4c0f3f DA |
1491 | count = drm_fb_helper_probe_connector_modes(fb_helper, |
1492 | dev->mode_config.max_width, | |
1493 | dev->mode_config.max_height); | |
38651674 DA |
1494 | /* |
1495 | * we shouldn't end up with no modes here. | |
1496 | */ | |
5c4426a7 | 1497 | if (count == 0) { |
eb1f8e4f | 1498 | printk(KERN_INFO "No connectors reported connected with modes\n"); |
5c4426a7 | 1499 | } |
8be48d92 | 1500 | drm_setup_crtcs(fb_helper); |
38651674 | 1501 | |
4abe3520 | 1502 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
38651674 | 1503 | } |
8be48d92 | 1504 | EXPORT_SYMBOL(drm_fb_helper_initial_config); |
38651674 | 1505 | |
eb1f8e4f | 1506 | bool drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper) |
38651674 | 1507 | { |
5c4426a7 | 1508 | int count = 0; |
4abe3520 | 1509 | u32 max_width, max_height, bpp_sel; |
4abe3520 DA |
1510 | bool bound = false, crtcs_bound = false; |
1511 | struct drm_crtc *crtc; | |
5c4426a7 | 1512 | |
eb1f8e4f DA |
1513 | if (!fb_helper->fb) |
1514 | return false; | |
4abe3520 | 1515 | |
4abe3520 DA |
1516 | list_for_each_entry(crtc, &fb_helper->dev->mode_config.crtc_list, head) { |
1517 | if (crtc->fb) | |
1518 | crtcs_bound = true; | |
1519 | if (crtc->fb == fb_helper->fb) | |
1520 | bound = true; | |
1521 | } | |
1522 | ||
eb1f8e4f | 1523 | if (!bound && crtcs_bound) { |
4abe3520 | 1524 | fb_helper->delayed_hotplug = true; |
eb1f8e4f | 1525 | return false; |
4abe3520 | 1526 | } |
eb1f8e4f | 1527 | DRM_DEBUG_KMS("\n"); |
4abe3520 | 1528 | |
eb1f8e4f DA |
1529 | max_width = fb_helper->fb->width; |
1530 | max_height = fb_helper->fb->height; | |
1531 | bpp_sel = fb_helper->fb->bits_per_pixel; | |
5c4426a7 | 1532 | |
eb1f8e4f DA |
1533 | count = drm_fb_helper_probe_connector_modes(fb_helper, max_width, |
1534 | max_height); | |
1535 | drm_setup_crtcs(fb_helper); | |
4abe3520 | 1536 | |
eb1f8e4f | 1537 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
5c4426a7 | 1538 | } |
eb1f8e4f | 1539 | EXPORT_SYMBOL(drm_fb_helper_hotplug_event); |
5c4426a7 | 1540 | |
6a108a14 | 1541 | /* The Kconfig DRM_KMS_HELPER selects FRAMEBUFFER_CONSOLE (if !EXPERT) |
3ce05168 DF |
1542 | * but the module doesn't depend on any fb console symbols. At least |
1543 | * attempt to load fbcon to avoid leaving the system without a usable console. | |
1544 | */ | |
6a108a14 | 1545 | #if defined(CONFIG_FRAMEBUFFER_CONSOLE_MODULE) && !defined(CONFIG_EXPERT) |
3ce05168 DF |
1546 | static int __init drm_fb_helper_modinit(void) |
1547 | { | |
1548 | const char *name = "fbcon"; | |
1549 | struct module *fbcon; | |
1550 | ||
1551 | mutex_lock(&module_mutex); | |
1552 | fbcon = find_module(name); | |
1553 | mutex_unlock(&module_mutex); | |
1554 | ||
1555 | if (!fbcon) | |
1556 | request_module_nowait(name); | |
1557 | return 0; | |
1558 | } | |
1559 | ||
1560 | module_init(drm_fb_helper_modinit); | |
1561 | #endif |