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