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Commit | Line | Data |
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785b93ef DA |
1 | /* |
2 | * Copyright (c) 2006-2009 Red Hat Inc. | |
3 | * Copyright (c) 2006-2008 Intel Corporation | |
4 | * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> | |
5 | * | |
6 | * DRM framebuffer helper functions | |
7 | * | |
8 | * Permission to use, copy, modify, distribute, and sell this software and its | |
9 | * documentation for any purpose is hereby granted without fee, provided that | |
10 | * the above copyright notice appear in all copies and that both that copyright | |
11 | * notice and this permission notice appear in supporting documentation, and | |
12 | * that the name of the copyright holders not be used in advertising or | |
13 | * publicity pertaining to distribution of the software without specific, | |
14 | * written prior permission. The copyright holders make no representations | |
15 | * about the suitability of this software for any purpose. It is provided "as | |
16 | * is" without express or implied warranty. | |
17 | * | |
18 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
19 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
20 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
21 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
22 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
23 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
24 | * OF THIS SOFTWARE. | |
25 | * | |
26 | * Authors: | |
27 | * Dave Airlie <airlied@linux.ie> | |
28 | * Jesse Barnes <jesse.barnes@intel.com> | |
29 | */ | |
3b40a443 | 30 | #include <linux/kernel.h> |
785b93ef | 31 | #include <linux/sysrq.h> |
5a0e3ad6 | 32 | #include <linux/slab.h> |
785b93ef DA |
33 | #include <linux/fb.h> |
34 | #include "drmP.h" | |
35 | #include "drm_crtc.h" | |
36 | #include "drm_fb_helper.h" | |
37 | #include "drm_crtc_helper.h" | |
38 | ||
6fcefd56 DA |
39 | MODULE_AUTHOR("David Airlie, Jesse Barnes"); |
40 | MODULE_DESCRIPTION("DRM KMS helper"); | |
41 | MODULE_LICENSE("GPL and additional rights"); | |
42 | ||
785b93ef DA |
43 | static LIST_HEAD(kernel_fb_helper_list); |
44 | ||
0b4c0f3f DA |
45 | /* simple single crtc case helper function */ |
46 | int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper) | |
d50ba256 | 47 | { |
0b4c0f3f DA |
48 | struct drm_device *dev = fb_helper->dev; |
49 | struct drm_connector *connector; | |
50 | int i; | |
d50ba256 | 51 | |
0b4c0f3f DA |
52 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
53 | struct drm_fb_helper_connector *fb_helper_connector; | |
54 | ||
55 | fb_helper_connector = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL); | |
56 | if (!fb_helper_connector) | |
57 | goto fail; | |
d50ba256 | 58 | |
0b4c0f3f DA |
59 | fb_helper_connector->connector = connector; |
60 | fb_helper->connector_info[fb_helper->connector_count++] = fb_helper_connector; | |
61 | } | |
d50ba256 | 62 | return 0; |
0b4c0f3f DA |
63 | fail: |
64 | for (i = 0; i < fb_helper->connector_count; i++) { | |
65 | kfree(fb_helper->connector_info[i]); | |
66 | fb_helper->connector_info[i] = NULL; | |
67 | } | |
68 | fb_helper->connector_count = 0; | |
69 | return -ENOMEM; | |
d50ba256 | 70 | } |
0b4c0f3f | 71 | EXPORT_SYMBOL(drm_fb_helper_single_add_all_connectors); |
d50ba256 | 72 | |
d50ba256 DA |
73 | /** |
74 | * drm_fb_helper_connector_parse_command_line - parse command line for connector | |
75 | * @connector - connector to parse line for | |
76 | * @mode_option - per connector mode option | |
77 | * | |
78 | * This parses the connector specific then generic command lines for | |
79 | * modes and options to configure the connector. | |
80 | * | |
81 | * This uses the same parameters as the fb modedb.c, except for extra | |
82 | * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m][eDd] | |
83 | * | |
84 | * enable/enable Digital/disable bit at the end | |
85 | */ | |
0b4c0f3f | 86 | static bool drm_fb_helper_connector_parse_command_line(struct drm_fb_helper_connector *fb_helper_conn, |
d50ba256 DA |
87 | const char *mode_option) |
88 | { | |
89 | const char *name; | |
90 | unsigned int namelen; | |
91 | int res_specified = 0, bpp_specified = 0, refresh_specified = 0; | |
92 | unsigned int xres = 0, yres = 0, bpp = 32, refresh = 0; | |
93 | int yres_specified = 0, cvt = 0, rb = 0, interlace = 0, margins = 0; | |
94 | int i; | |
95 | enum drm_connector_force force = DRM_FORCE_UNSPECIFIED; | |
8ef8678c | 96 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
0b4c0f3f | 97 | struct drm_connector *connector = fb_helper_conn->connector; |
d50ba256 | 98 | |
0b4c0f3f | 99 | if (!fb_helper_conn) |
8ef8678c DA |
100 | return false; |
101 | ||
0b4c0f3f | 102 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
d50ba256 DA |
103 | if (!mode_option) |
104 | mode_option = fb_mode_option; | |
105 | ||
106 | if (!mode_option) { | |
107 | cmdline_mode->specified = false; | |
108 | return false; | |
109 | } | |
110 | ||
111 | name = mode_option; | |
112 | namelen = strlen(name); | |
113 | for (i = namelen-1; i >= 0; i--) { | |
114 | switch (name[i]) { | |
115 | case '@': | |
116 | namelen = i; | |
117 | if (!refresh_specified && !bpp_specified && | |
118 | !yres_specified) { | |
3b40a443 | 119 | refresh = simple_strtol(&name[i+1], NULL, 10); |
d50ba256 DA |
120 | refresh_specified = 1; |
121 | if (cvt || rb) | |
122 | cvt = 0; | |
123 | } else | |
124 | goto done; | |
125 | break; | |
126 | case '-': | |
127 | namelen = i; | |
128 | if (!bpp_specified && !yres_specified) { | |
3b40a443 | 129 | bpp = simple_strtol(&name[i+1], NULL, 10); |
d50ba256 DA |
130 | bpp_specified = 1; |
131 | if (cvt || rb) | |
132 | cvt = 0; | |
133 | } else | |
134 | goto done; | |
135 | break; | |
136 | case 'x': | |
137 | if (!yres_specified) { | |
3b40a443 | 138 | yres = simple_strtol(&name[i+1], NULL, 10); |
d50ba256 DA |
139 | yres_specified = 1; |
140 | } else | |
141 | goto done; | |
142 | case '0' ... '9': | |
143 | break; | |
144 | case 'M': | |
145 | if (!yres_specified) | |
146 | cvt = 1; | |
147 | break; | |
148 | case 'R': | |
b829e011 | 149 | if (cvt) |
d50ba256 DA |
150 | rb = 1; |
151 | break; | |
152 | case 'm': | |
153 | if (!cvt) | |
154 | margins = 1; | |
155 | break; | |
156 | case 'i': | |
157 | if (!cvt) | |
158 | interlace = 1; | |
159 | break; | |
160 | case 'e': | |
161 | force = DRM_FORCE_ON; | |
162 | break; | |
163 | case 'D': | |
e89a8c90 | 164 | if ((connector->connector_type != DRM_MODE_CONNECTOR_DVII) && |
d50ba256 DA |
165 | (connector->connector_type != DRM_MODE_CONNECTOR_HDMIB)) |
166 | force = DRM_FORCE_ON; | |
167 | else | |
168 | force = DRM_FORCE_ON_DIGITAL; | |
169 | break; | |
170 | case 'd': | |
171 | force = DRM_FORCE_OFF; | |
172 | break; | |
173 | default: | |
174 | goto done; | |
175 | } | |
176 | } | |
177 | if (i < 0 && yres_specified) { | |
3b40a443 | 178 | xres = simple_strtol(name, NULL, 10); |
d50ba256 DA |
179 | res_specified = 1; |
180 | } | |
181 | done: | |
182 | ||
183 | DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n", | |
184 | drm_get_connector_name(connector), xres, yres, | |
185 | (refresh) ? refresh : 60, (rb) ? " reduced blanking" : | |
186 | "", (margins) ? " with margins" : "", (interlace) ? | |
187 | " interlaced" : ""); | |
188 | ||
189 | if (force) { | |
190 | const char *s; | |
191 | switch (force) { | |
192 | case DRM_FORCE_OFF: s = "OFF"; break; | |
193 | case DRM_FORCE_ON_DIGITAL: s = "ON - dig"; break; | |
194 | default: | |
195 | case DRM_FORCE_ON: s = "ON"; break; | |
196 | } | |
197 | ||
198 | DRM_INFO("forcing %s connector %s\n", | |
199 | drm_get_connector_name(connector), s); | |
200 | connector->force = force; | |
201 | } | |
202 | ||
203 | if (res_specified) { | |
204 | cmdline_mode->specified = true; | |
205 | cmdline_mode->xres = xres; | |
206 | cmdline_mode->yres = yres; | |
207 | } | |
208 | ||
209 | if (refresh_specified) { | |
210 | cmdline_mode->refresh_specified = true; | |
211 | cmdline_mode->refresh = refresh; | |
212 | } | |
213 | ||
214 | if (bpp_specified) { | |
215 | cmdline_mode->bpp_specified = true; | |
216 | cmdline_mode->bpp = bpp; | |
217 | } | |
218 | cmdline_mode->rb = rb ? true : false; | |
219 | cmdline_mode->cvt = cvt ? true : false; | |
220 | cmdline_mode->interlace = interlace ? true : false; | |
221 | ||
222 | return true; | |
223 | } | |
224 | ||
0b4c0f3f | 225 | static int drm_fb_helper_parse_command_line(struct drm_fb_helper *fb_helper) |
d50ba256 | 226 | { |
0b4c0f3f DA |
227 | struct drm_fb_helper_connector *fb_helper_conn; |
228 | int i; | |
d50ba256 | 229 | |
0b4c0f3f | 230 | for (i = 0; i < fb_helper->connector_count; i++) { |
d50ba256 DA |
231 | char *option = NULL; |
232 | ||
0b4c0f3f DA |
233 | fb_helper_conn = fb_helper->connector_info[i]; |
234 | ||
d50ba256 | 235 | /* do something on return - turn off connector maybe */ |
0b4c0f3f | 236 | if (fb_get_options(drm_get_connector_name(fb_helper_conn->connector), &option)) |
d50ba256 DA |
237 | continue; |
238 | ||
0b4c0f3f | 239 | drm_fb_helper_connector_parse_command_line(fb_helper_conn, option); |
d50ba256 DA |
240 | } |
241 | return 0; | |
242 | } | |
243 | ||
785b93ef DA |
244 | bool drm_fb_helper_force_kernel_mode(void) |
245 | { | |
246 | int i = 0; | |
247 | bool ret, error = false; | |
248 | struct drm_fb_helper *helper; | |
249 | ||
250 | if (list_empty(&kernel_fb_helper_list)) | |
251 | return false; | |
252 | ||
253 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { | |
254 | for (i = 0; i < helper->crtc_count; i++) { | |
255 | struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set; | |
256 | ret = drm_crtc_helper_set_config(mode_set); | |
257 | if (ret) | |
258 | error = true; | |
259 | } | |
260 | } | |
261 | return error; | |
262 | } | |
263 | ||
264 | int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed, | |
265 | void *panic_str) | |
266 | { | |
fc2362af | 267 | printk(KERN_ERR "panic occurred, switching back to text console\n"); |
785b93ef DA |
268 | return drm_fb_helper_force_kernel_mode(); |
269 | return 0; | |
270 | } | |
271 | EXPORT_SYMBOL(drm_fb_helper_panic); | |
272 | ||
273 | static struct notifier_block paniced = { | |
274 | .notifier_call = drm_fb_helper_panic, | |
275 | }; | |
276 | ||
277 | /** | |
278 | * drm_fb_helper_restore - restore the framebuffer console (kernel) config | |
279 | * | |
280 | * Restore's the kernel's fbcon mode, used for lastclose & panic paths. | |
281 | */ | |
282 | void drm_fb_helper_restore(void) | |
283 | { | |
284 | bool ret; | |
285 | ret = drm_fb_helper_force_kernel_mode(); | |
286 | if (ret == true) | |
287 | DRM_ERROR("Failed to restore crtc configuration\n"); | |
288 | } | |
289 | EXPORT_SYMBOL(drm_fb_helper_restore); | |
290 | ||
bea1d35b | 291 | #ifdef CONFIG_MAGIC_SYSRQ |
785b93ef DA |
292 | static void drm_fb_helper_restore_work_fn(struct work_struct *ignored) |
293 | { | |
294 | drm_fb_helper_restore(); | |
295 | } | |
296 | static DECLARE_WORK(drm_fb_helper_restore_work, drm_fb_helper_restore_work_fn); | |
297 | ||
298 | static void drm_fb_helper_sysrq(int dummy1, struct tty_struct *dummy3) | |
299 | { | |
300 | schedule_work(&drm_fb_helper_restore_work); | |
301 | } | |
302 | ||
303 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { | |
304 | .handler = drm_fb_helper_sysrq, | |
305 | .help_msg = "force-fb(V)", | |
306 | .action_msg = "Restore framebuffer console", | |
307 | }; | |
b8c40d62 RD |
308 | #else |
309 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { }; | |
bea1d35b | 310 | #endif |
785b93ef DA |
311 | |
312 | static void drm_fb_helper_on(struct fb_info *info) | |
313 | { | |
314 | struct drm_fb_helper *fb_helper = info->par; | |
315 | struct drm_device *dev = fb_helper->dev; | |
316 | struct drm_crtc *crtc; | |
8be48d92 | 317 | struct drm_crtc_helper_funcs *crtc_funcs; |
023eb571 | 318 | struct drm_connector *connector; |
785b93ef | 319 | struct drm_encoder *encoder; |
023eb571 | 320 | int i, j; |
785b93ef DA |
321 | |
322 | /* | |
323 | * For each CRTC in this fb, turn the crtc on then, | |
324 | * find all associated encoders and turn them on. | |
325 | */ | |
8be48d92 | 326 | mutex_lock(&dev->mode_config.mutex); |
e87b2c42 | 327 | for (i = 0; i < fb_helper->crtc_count; i++) { |
8be48d92 DA |
328 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
329 | crtc_funcs = crtc->helper_private; | |
785b93ef | 330 | |
8be48d92 DA |
331 | if (!crtc->enabled) |
332 | continue; | |
333 | ||
334 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); | |
785b93ef | 335 | |
023eb571 JB |
336 | /* Walk the connectors & encoders on this fb turning them on */ |
337 | for (j = 0; j < fb_helper->connector_count; j++) { | |
338 | connector = fb_helper->connector_info[j]->connector; | |
339 | connector->dpms = DRM_MODE_DPMS_ON; | |
340 | drm_connector_property_set_value(connector, | |
341 | dev->mode_config.dpms_property, | |
342 | DRM_MODE_DPMS_ON); | |
343 | } | |
8be48d92 DA |
344 | /* Found a CRTC on this fb, now find encoders */ |
345 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
346 | if (encoder->crtc == crtc) { | |
347 | struct drm_encoder_helper_funcs *encoder_funcs; | |
785b93ef | 348 | |
8be48d92 DA |
349 | encoder_funcs = encoder->helper_private; |
350 | encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); | |
785b93ef DA |
351 | } |
352 | } | |
353 | } | |
8be48d92 | 354 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
355 | } |
356 | ||
357 | static void drm_fb_helper_off(struct fb_info *info, int dpms_mode) | |
358 | { | |
359 | struct drm_fb_helper *fb_helper = info->par; | |
360 | struct drm_device *dev = fb_helper->dev; | |
361 | struct drm_crtc *crtc; | |
8be48d92 | 362 | struct drm_crtc_helper_funcs *crtc_funcs; |
023eb571 | 363 | struct drm_connector *connector; |
785b93ef | 364 | struct drm_encoder *encoder; |
023eb571 | 365 | int i, j; |
785b93ef DA |
366 | |
367 | /* | |
368 | * For each CRTC in this fb, find all associated encoders | |
369 | * and turn them off, then turn off the CRTC. | |
370 | */ | |
8be48d92 | 371 | mutex_lock(&dev->mode_config.mutex); |
e87b2c42 | 372 | for (i = 0; i < fb_helper->crtc_count; i++) { |
8be48d92 DA |
373 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
374 | crtc_funcs = crtc->helper_private; | |
e87b2c42 | 375 | |
8be48d92 DA |
376 | if (!crtc->enabled) |
377 | continue; | |
e87b2c42 | 378 | |
023eb571 JB |
379 | /* Walk the connectors on this fb and mark them off */ |
380 | for (j = 0; j < fb_helper->connector_count; j++) { | |
381 | connector = fb_helper->connector_info[j]->connector; | |
382 | connector->dpms = dpms_mode; | |
383 | drm_connector_property_set_value(connector, | |
384 | dev->mode_config.dpms_property, | |
385 | dpms_mode); | |
386 | } | |
8be48d92 DA |
387 | /* Found a CRTC on this fb, now find encoders */ |
388 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
389 | if (encoder->crtc == crtc) { | |
390 | struct drm_encoder_helper_funcs *encoder_funcs; | |
e87b2c42 | 391 | |
8be48d92 DA |
392 | encoder_funcs = encoder->helper_private; |
393 | encoder_funcs->dpms(encoder, dpms_mode); | |
e87b2c42 | 394 | } |
785b93ef | 395 | } |
8be48d92 | 396 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF); |
785b93ef | 397 | } |
8be48d92 | 398 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
399 | } |
400 | ||
401 | int drm_fb_helper_blank(int blank, struct fb_info *info) | |
402 | { | |
403 | switch (blank) { | |
731b5a15 | 404 | /* Display: On; HSync: On, VSync: On */ |
785b93ef DA |
405 | case FB_BLANK_UNBLANK: |
406 | drm_fb_helper_on(info); | |
407 | break; | |
731b5a15 | 408 | /* Display: Off; HSync: On, VSync: On */ |
785b93ef | 409 | case FB_BLANK_NORMAL: |
5fd4df4d | 410 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); |
785b93ef | 411 | break; |
731b5a15 | 412 | /* Display: Off; HSync: Off, VSync: On */ |
785b93ef DA |
413 | case FB_BLANK_HSYNC_SUSPEND: |
414 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); | |
415 | break; | |
731b5a15 | 416 | /* Display: Off; HSync: On, VSync: Off */ |
785b93ef DA |
417 | case FB_BLANK_VSYNC_SUSPEND: |
418 | drm_fb_helper_off(info, DRM_MODE_DPMS_SUSPEND); | |
419 | break; | |
731b5a15 | 420 | /* Display: Off; HSync: Off, VSync: Off */ |
785b93ef DA |
421 | case FB_BLANK_POWERDOWN: |
422 | drm_fb_helper_off(info, DRM_MODE_DPMS_OFF); | |
423 | break; | |
424 | } | |
425 | return 0; | |
426 | } | |
427 | EXPORT_SYMBOL(drm_fb_helper_blank); | |
428 | ||
429 | static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) | |
430 | { | |
431 | int i; | |
432 | ||
0b4c0f3f DA |
433 | for (i = 0; i < helper->connector_count; i++) |
434 | kfree(helper->connector_info[i]); | |
435 | kfree(helper->connector_info); | |
785b93ef DA |
436 | for (i = 0; i < helper->crtc_count; i++) |
437 | kfree(helper->crtc_info[i].mode_set.connectors); | |
438 | kfree(helper->crtc_info); | |
439 | } | |
440 | ||
4abe3520 DA |
441 | int drm_fb_helper_init(struct drm_device *dev, |
442 | struct drm_fb_helper *fb_helper, | |
eb1f8e4f | 443 | int crtc_count, int max_conn_count) |
785b93ef | 444 | { |
785b93ef DA |
445 | struct drm_crtc *crtc; |
446 | int ret = 0; | |
447 | int i; | |
448 | ||
4abe3520 | 449 | fb_helper->dev = dev; |
4abe3520 DA |
450 | |
451 | INIT_LIST_HEAD(&fb_helper->kernel_fb_list); | |
452 | ||
453 | fb_helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL); | |
454 | if (!fb_helper->crtc_info) | |
785b93ef DA |
455 | return -ENOMEM; |
456 | ||
4abe3520 DA |
457 | fb_helper->crtc_count = crtc_count; |
458 | fb_helper->connector_info = kcalloc(dev->mode_config.num_connector, sizeof(struct drm_fb_helper_connector *), GFP_KERNEL); | |
459 | if (!fb_helper->connector_info) { | |
460 | kfree(fb_helper->crtc_info); | |
0b4c0f3f DA |
461 | return -ENOMEM; |
462 | } | |
4abe3520 | 463 | fb_helper->connector_count = 0; |
785b93ef DA |
464 | |
465 | for (i = 0; i < crtc_count; i++) { | |
4abe3520 | 466 | fb_helper->crtc_info[i].mode_set.connectors = |
785b93ef DA |
467 | kcalloc(max_conn_count, |
468 | sizeof(struct drm_connector *), | |
469 | GFP_KERNEL); | |
470 | ||
4abe3520 | 471 | if (!fb_helper->crtc_info[i].mode_set.connectors) { |
785b93ef DA |
472 | ret = -ENOMEM; |
473 | goto out_free; | |
474 | } | |
4abe3520 | 475 | fb_helper->crtc_info[i].mode_set.num_connectors = 0; |
785b93ef DA |
476 | } |
477 | ||
478 | i = 0; | |
479 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
4abe3520 DA |
480 | fb_helper->crtc_info[i].crtc_id = crtc->base.id; |
481 | fb_helper->crtc_info[i].mode_set.crtc = crtc; | |
785b93ef DA |
482 | i++; |
483 | } | |
4abe3520 | 484 | fb_helper->conn_limit = max_conn_count; |
785b93ef DA |
485 | return 0; |
486 | out_free: | |
4abe3520 | 487 | drm_fb_helper_crtc_free(fb_helper); |
785b93ef DA |
488 | return -ENOMEM; |
489 | } | |
4abe3520 DA |
490 | EXPORT_SYMBOL(drm_fb_helper_init); |
491 | ||
492 | void drm_fb_helper_fini(struct drm_fb_helper *fb_helper) | |
493 | { | |
494 | if (!list_empty(&fb_helper->kernel_fb_list)) { | |
495 | list_del(&fb_helper->kernel_fb_list); | |
496 | if (list_empty(&kernel_fb_helper_list)) { | |
3da1f33e | 497 | printk(KERN_INFO "drm: unregistered panic notifier\n"); |
4abe3520 DA |
498 | atomic_notifier_chain_unregister(&panic_notifier_list, |
499 | &paniced); | |
500 | unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
501 | } | |
502 | } | |
503 | ||
504 | drm_fb_helper_crtc_free(fb_helper); | |
505 | ||
4abe3520 DA |
506 | } |
507 | EXPORT_SYMBOL(drm_fb_helper_fini); | |
785b93ef | 508 | |
c850cb78 | 509 | static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, |
b8c00ac5 DA |
510 | u16 blue, u16 regno, struct fb_info *info) |
511 | { | |
512 | struct drm_fb_helper *fb_helper = info->par; | |
513 | struct drm_framebuffer *fb = fb_helper->fb; | |
514 | int pindex; | |
515 | ||
c850cb78 DA |
516 | if (info->fix.visual == FB_VISUAL_TRUECOLOR) { |
517 | u32 *palette; | |
518 | u32 value; | |
519 | /* place color in psuedopalette */ | |
520 | if (regno > 16) | |
521 | return -EINVAL; | |
522 | palette = (u32 *)info->pseudo_palette; | |
523 | red >>= (16 - info->var.red.length); | |
524 | green >>= (16 - info->var.green.length); | |
525 | blue >>= (16 - info->var.blue.length); | |
526 | value = (red << info->var.red.offset) | | |
527 | (green << info->var.green.offset) | | |
528 | (blue << info->var.blue.offset); | |
529 | palette[regno] = value; | |
530 | return 0; | |
531 | } | |
532 | ||
b8c00ac5 DA |
533 | pindex = regno; |
534 | ||
535 | if (fb->bits_per_pixel == 16) { | |
536 | pindex = regno << 3; | |
537 | ||
538 | if (fb->depth == 16 && regno > 63) | |
c850cb78 | 539 | return -EINVAL; |
b8c00ac5 | 540 | if (fb->depth == 15 && regno > 31) |
c850cb78 | 541 | return -EINVAL; |
b8c00ac5 DA |
542 | |
543 | if (fb->depth == 16) { | |
544 | u16 r, g, b; | |
545 | int i; | |
546 | if (regno < 32) { | |
547 | for (i = 0; i < 8; i++) | |
548 | fb_helper->funcs->gamma_set(crtc, red, | |
549 | green, blue, pindex + i); | |
550 | } | |
551 | ||
552 | fb_helper->funcs->gamma_get(crtc, &r, | |
553 | &g, &b, | |
554 | pindex >> 1); | |
555 | ||
556 | for (i = 0; i < 4; i++) | |
557 | fb_helper->funcs->gamma_set(crtc, r, | |
558 | green, b, | |
559 | (pindex >> 1) + i); | |
560 | } | |
561 | } | |
562 | ||
563 | if (fb->depth != 16) | |
564 | fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex); | |
c850cb78 | 565 | return 0; |
b8c00ac5 DA |
566 | } |
567 | ||
068143d3 DA |
568 | int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) |
569 | { | |
570 | struct drm_fb_helper *fb_helper = info->par; | |
8be48d92 | 571 | struct drm_crtc_helper_funcs *crtc_funcs; |
068143d3 DA |
572 | u16 *red, *green, *blue, *transp; |
573 | struct drm_crtc *crtc; | |
574 | int i, rc = 0; | |
575 | int start; | |
576 | ||
8be48d92 DA |
577 | for (i = 0; i < fb_helper->crtc_count; i++) { |
578 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
579 | crtc_funcs = crtc->helper_private; | |
068143d3 DA |
580 | |
581 | red = cmap->red; | |
582 | green = cmap->green; | |
583 | blue = cmap->blue; | |
584 | transp = cmap->transp; | |
585 | start = cmap->start; | |
586 | ||
587 | for (i = 0; i < cmap->len; i++) { | |
588 | u16 hred, hgreen, hblue, htransp = 0xffff; | |
589 | ||
590 | hred = *red++; | |
591 | hgreen = *green++; | |
592 | hblue = *blue++; | |
593 | ||
594 | if (transp) | |
595 | htransp = *transp++; | |
596 | ||
c850cb78 DA |
597 | rc = setcolreg(crtc, hred, hgreen, hblue, start++, info); |
598 | if (rc) | |
599 | return rc; | |
068143d3 DA |
600 | } |
601 | crtc_funcs->load_lut(crtc); | |
602 | } | |
603 | return rc; | |
604 | } | |
605 | EXPORT_SYMBOL(drm_fb_helper_setcmap); | |
606 | ||
785b93ef DA |
607 | int drm_fb_helper_check_var(struct fb_var_screeninfo *var, |
608 | struct fb_info *info) | |
609 | { | |
610 | struct drm_fb_helper *fb_helper = info->par; | |
611 | struct drm_framebuffer *fb = fb_helper->fb; | |
612 | int depth; | |
613 | ||
5349ef31 | 614 | if (var->pixclock != 0) |
785b93ef DA |
615 | return -EINVAL; |
616 | ||
617 | /* Need to resize the fb object !!! */ | |
509c7d83 DA |
618 | if (var->bits_per_pixel > fb->bits_per_pixel || var->xres > fb->width || var->yres > fb->height) { |
619 | DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb " | |
620 | "object %dx%d-%d > %dx%d-%d\n", var->xres, var->yres, var->bits_per_pixel, | |
621 | fb->width, fb->height, fb->bits_per_pixel); | |
785b93ef DA |
622 | return -EINVAL; |
623 | } | |
624 | ||
625 | switch (var->bits_per_pixel) { | |
626 | case 16: | |
627 | depth = (var->green.length == 6) ? 16 : 15; | |
628 | break; | |
629 | case 32: | |
630 | depth = (var->transp.length > 0) ? 32 : 24; | |
631 | break; | |
632 | default: | |
633 | depth = var->bits_per_pixel; | |
634 | break; | |
635 | } | |
636 | ||
637 | switch (depth) { | |
638 | case 8: | |
639 | var->red.offset = 0; | |
640 | var->green.offset = 0; | |
641 | var->blue.offset = 0; | |
642 | var->red.length = 8; | |
643 | var->green.length = 8; | |
644 | var->blue.length = 8; | |
645 | var->transp.length = 0; | |
646 | var->transp.offset = 0; | |
647 | break; | |
648 | case 15: | |
649 | var->red.offset = 10; | |
650 | var->green.offset = 5; | |
651 | var->blue.offset = 0; | |
652 | var->red.length = 5; | |
653 | var->green.length = 5; | |
654 | var->blue.length = 5; | |
655 | var->transp.length = 1; | |
656 | var->transp.offset = 15; | |
657 | break; | |
658 | case 16: | |
659 | var->red.offset = 11; | |
660 | var->green.offset = 5; | |
661 | var->blue.offset = 0; | |
662 | var->red.length = 5; | |
663 | var->green.length = 6; | |
664 | var->blue.length = 5; | |
665 | var->transp.length = 0; | |
666 | var->transp.offset = 0; | |
667 | break; | |
668 | case 24: | |
669 | var->red.offset = 16; | |
670 | var->green.offset = 8; | |
671 | var->blue.offset = 0; | |
672 | var->red.length = 8; | |
673 | var->green.length = 8; | |
674 | var->blue.length = 8; | |
675 | var->transp.length = 0; | |
676 | var->transp.offset = 0; | |
677 | break; | |
678 | case 32: | |
679 | var->red.offset = 16; | |
680 | var->green.offset = 8; | |
681 | var->blue.offset = 0; | |
682 | var->red.length = 8; | |
683 | var->green.length = 8; | |
684 | var->blue.length = 8; | |
685 | var->transp.length = 8; | |
686 | var->transp.offset = 24; | |
687 | break; | |
688 | default: | |
689 | return -EINVAL; | |
690 | } | |
691 | return 0; | |
692 | } | |
693 | EXPORT_SYMBOL(drm_fb_helper_check_var); | |
694 | ||
695 | /* this will let fbcon do the mode init */ | |
696 | int drm_fb_helper_set_par(struct fb_info *info) | |
697 | { | |
698 | struct drm_fb_helper *fb_helper = info->par; | |
699 | struct drm_device *dev = fb_helper->dev; | |
700 | struct fb_var_screeninfo *var = &info->var; | |
701 | struct drm_crtc *crtc; | |
702 | int ret; | |
703 | int i; | |
704 | ||
5349ef31 | 705 | if (var->pixclock != 0) { |
172e91f5 | 706 | DRM_ERROR("PIXEL CLOCK SET\n"); |
785b93ef DA |
707 | return -EINVAL; |
708 | } | |
709 | ||
8be48d92 DA |
710 | mutex_lock(&dev->mode_config.mutex); |
711 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
712 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
0b4c0f3f DA |
713 | ret = crtc->funcs->set_config(&fb_helper->crtc_info[i].mode_set); |
714 | if (ret) { | |
785b93ef | 715 | mutex_unlock(&dev->mode_config.mutex); |
0b4c0f3f | 716 | return ret; |
785b93ef DA |
717 | } |
718 | } | |
8be48d92 | 719 | mutex_unlock(&dev->mode_config.mutex); |
4abe3520 DA |
720 | |
721 | if (fb_helper->delayed_hotplug) { | |
722 | fb_helper->delayed_hotplug = false; | |
eb1f8e4f | 723 | drm_fb_helper_hotplug_event(fb_helper); |
4abe3520 | 724 | } |
785b93ef DA |
725 | return 0; |
726 | } | |
727 | EXPORT_SYMBOL(drm_fb_helper_set_par); | |
728 | ||
729 | int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, | |
730 | struct fb_info *info) | |
731 | { | |
732 | struct drm_fb_helper *fb_helper = info->par; | |
733 | struct drm_device *dev = fb_helper->dev; | |
734 | struct drm_mode_set *modeset; | |
735 | struct drm_crtc *crtc; | |
736 | int ret = 0; | |
737 | int i; | |
738 | ||
8be48d92 DA |
739 | mutex_lock(&dev->mode_config.mutex); |
740 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
741 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
785b93ef DA |
742 | |
743 | modeset = &fb_helper->crtc_info[i].mode_set; | |
744 | ||
745 | modeset->x = var->xoffset; | |
746 | modeset->y = var->yoffset; | |
747 | ||
748 | if (modeset->num_connectors) { | |
785b93ef | 749 | ret = crtc->funcs->set_config(modeset); |
785b93ef DA |
750 | if (!ret) { |
751 | info->var.xoffset = var->xoffset; | |
752 | info->var.yoffset = var->yoffset; | |
753 | } | |
754 | } | |
755 | } | |
8be48d92 | 756 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
757 | return ret; |
758 | } | |
759 | EXPORT_SYMBOL(drm_fb_helper_pan_display); | |
760 | ||
8be48d92 DA |
761 | int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, |
762 | int preferred_bpp) | |
785b93ef | 763 | { |
785b93ef DA |
764 | int new_fb = 0; |
765 | int crtc_count = 0; | |
4abe3520 | 766 | int i; |
785b93ef | 767 | struct fb_info *info; |
38651674 | 768 | struct drm_fb_helper_surface_size sizes; |
8be48d92 | 769 | int gamma_size = 0; |
38651674 DA |
770 | |
771 | memset(&sizes, 0, sizeof(struct drm_fb_helper_surface_size)); | |
772 | sizes.surface_depth = 24; | |
773 | sizes.surface_bpp = 32; | |
774 | sizes.fb_width = (unsigned)-1; | |
775 | sizes.fb_height = (unsigned)-1; | |
785b93ef | 776 | |
b8c00ac5 DA |
777 | /* if driver picks 8 or 16 by default use that |
778 | for both depth/bpp */ | |
38651674 DA |
779 | if (preferred_bpp != sizes.surface_bpp) { |
780 | sizes.surface_depth = sizes.surface_bpp = preferred_bpp; | |
b8c00ac5 | 781 | } |
785b93ef | 782 | /* first up get a count of crtcs now in use and new min/maxes width/heights */ |
0b4c0f3f DA |
783 | for (i = 0; i < fb_helper->connector_count; i++) { |
784 | struct drm_fb_helper_connector *fb_helper_conn = fb_helper->connector_info[i]; | |
8ef8678c DA |
785 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
786 | ||
0b4c0f3f | 787 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
d50ba256 DA |
788 | |
789 | if (cmdline_mode->bpp_specified) { | |
790 | switch (cmdline_mode->bpp) { | |
791 | case 8: | |
38651674 | 792 | sizes.surface_depth = sizes.surface_bpp = 8; |
d50ba256 DA |
793 | break; |
794 | case 15: | |
38651674 DA |
795 | sizes.surface_depth = 15; |
796 | sizes.surface_bpp = 16; | |
d50ba256 DA |
797 | break; |
798 | case 16: | |
38651674 | 799 | sizes.surface_depth = sizes.surface_bpp = 16; |
d50ba256 DA |
800 | break; |
801 | case 24: | |
38651674 | 802 | sizes.surface_depth = sizes.surface_bpp = 24; |
d50ba256 DA |
803 | break; |
804 | case 32: | |
38651674 DA |
805 | sizes.surface_depth = 24; |
806 | sizes.surface_bpp = 32; | |
d50ba256 DA |
807 | break; |
808 | } | |
809 | break; | |
810 | } | |
811 | } | |
812 | ||
8be48d92 DA |
813 | crtc_count = 0; |
814 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
815 | struct drm_display_mode *desired_mode; | |
816 | desired_mode = fb_helper->crtc_info[i].desired_mode; | |
817 | ||
818 | if (desired_mode) { | |
819 | if (gamma_size == 0) | |
820 | gamma_size = fb_helper->crtc_info[i].mode_set.crtc->gamma_size; | |
821 | if (desired_mode->hdisplay < sizes.fb_width) | |
822 | sizes.fb_width = desired_mode->hdisplay; | |
823 | if (desired_mode->vdisplay < sizes.fb_height) | |
824 | sizes.fb_height = desired_mode->vdisplay; | |
825 | if (desired_mode->hdisplay > sizes.surface_width) | |
826 | sizes.surface_width = desired_mode->hdisplay; | |
827 | if (desired_mode->vdisplay > sizes.surface_height) | |
828 | sizes.surface_height = desired_mode->vdisplay; | |
785b93ef DA |
829 | crtc_count++; |
830 | } | |
831 | } | |
832 | ||
38651674 | 833 | if (crtc_count == 0 || sizes.fb_width == -1 || sizes.fb_height == -1) { |
785b93ef DA |
834 | /* hmm everyone went away - assume VGA cable just fell out |
835 | and will come back later. */ | |
eb1f8e4f | 836 | DRM_INFO("Cannot find any crtc or sizes - going 1024x768\n"); |
19b4b445 DA |
837 | sizes.fb_width = sizes.surface_width = 1024; |
838 | sizes.fb_height = sizes.surface_height = 768; | |
785b93ef DA |
839 | } |
840 | ||
38651674 | 841 | /* push down into drivers */ |
4abe3520 | 842 | new_fb = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes); |
38651674 DA |
843 | if (new_fb < 0) |
844 | return new_fb; | |
785b93ef | 845 | |
38651674 | 846 | info = fb_helper->fbdev; |
785b93ef | 847 | |
8be48d92 DA |
848 | /* set the fb pointer */ |
849 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
850 | fb_helper->crtc_info[i].mode_set.fb = fb_helper->fb; | |
785b93ef | 851 | } |
785b93ef DA |
852 | |
853 | if (new_fb) { | |
5349ef31 | 854 | info->var.pixclock = 0; |
3bea21b6 | 855 | if (register_framebuffer(info) < 0) { |
785b93ef | 856 | return -EINVAL; |
3bea21b6 | 857 | } |
38651674 DA |
858 | |
859 | printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, | |
860 | info->fix.id); | |
861 | ||
785b93ef DA |
862 | } else { |
863 | drm_fb_helper_set_par(info); | |
864 | } | |
785b93ef DA |
865 | |
866 | /* Switch back to kernel console on panic */ | |
867 | /* multi card linked list maybe */ | |
868 | if (list_empty(&kernel_fb_helper_list)) { | |
3da1f33e | 869 | printk(KERN_INFO "drm: registered panic notifier\n"); |
785b93ef DA |
870 | atomic_notifier_chain_register(&panic_notifier_list, |
871 | &paniced); | |
872 | register_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
873 | } | |
38651674 DA |
874 | if (new_fb) |
875 | list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list); | |
876 | ||
785b93ef DA |
877 | return 0; |
878 | } | |
879 | EXPORT_SYMBOL(drm_fb_helper_single_fb_probe); | |
880 | ||
068143d3 DA |
881 | void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, |
882 | uint32_t depth) | |
785b93ef DA |
883 | { |
884 | info->fix.type = FB_TYPE_PACKED_PIXELS; | |
068143d3 | 885 | info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR : |
c850cb78 | 886 | FB_VISUAL_TRUECOLOR; |
785b93ef DA |
887 | info->fix.type_aux = 0; |
888 | info->fix.xpanstep = 1; /* doing it in hw */ | |
889 | info->fix.ypanstep = 1; /* doing it in hw */ | |
890 | info->fix.ywrapstep = 0; | |
3420e742 | 891 | info->fix.accel = FB_ACCEL_NONE; |
785b93ef DA |
892 | info->fix.type_aux = 0; |
893 | ||
894 | info->fix.line_length = pitch; | |
895 | return; | |
896 | } | |
897 | EXPORT_SYMBOL(drm_fb_helper_fill_fix); | |
898 | ||
38651674 | 899 | void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, |
785b93ef DA |
900 | uint32_t fb_width, uint32_t fb_height) |
901 | { | |
38651674 DA |
902 | struct drm_framebuffer *fb = fb_helper->fb; |
903 | info->pseudo_palette = fb_helper->pseudo_palette; | |
785b93ef DA |
904 | info->var.xres_virtual = fb->width; |
905 | info->var.yres_virtual = fb->height; | |
906 | info->var.bits_per_pixel = fb->bits_per_pixel; | |
907 | info->var.xoffset = 0; | |
908 | info->var.yoffset = 0; | |
909 | info->var.activate = FB_ACTIVATE_NOW; | |
910 | info->var.height = -1; | |
911 | info->var.width = -1; | |
912 | ||
913 | switch (fb->depth) { | |
914 | case 8: | |
915 | info->var.red.offset = 0; | |
916 | info->var.green.offset = 0; | |
917 | info->var.blue.offset = 0; | |
918 | info->var.red.length = 8; /* 8bit DAC */ | |
919 | info->var.green.length = 8; | |
920 | info->var.blue.length = 8; | |
921 | info->var.transp.offset = 0; | |
922 | info->var.transp.length = 0; | |
923 | break; | |
924 | case 15: | |
925 | info->var.red.offset = 10; | |
926 | info->var.green.offset = 5; | |
927 | info->var.blue.offset = 0; | |
928 | info->var.red.length = 5; | |
929 | info->var.green.length = 5; | |
930 | info->var.blue.length = 5; | |
931 | info->var.transp.offset = 15; | |
932 | info->var.transp.length = 1; | |
933 | break; | |
934 | case 16: | |
935 | info->var.red.offset = 11; | |
936 | info->var.green.offset = 5; | |
937 | info->var.blue.offset = 0; | |
938 | info->var.red.length = 5; | |
939 | info->var.green.length = 6; | |
940 | info->var.blue.length = 5; | |
941 | info->var.transp.offset = 0; | |
942 | break; | |
943 | case 24: | |
944 | info->var.red.offset = 16; | |
945 | info->var.green.offset = 8; | |
946 | info->var.blue.offset = 0; | |
947 | info->var.red.length = 8; | |
948 | info->var.green.length = 8; | |
949 | info->var.blue.length = 8; | |
950 | info->var.transp.offset = 0; | |
951 | info->var.transp.length = 0; | |
952 | break; | |
953 | case 32: | |
954 | info->var.red.offset = 16; | |
955 | info->var.green.offset = 8; | |
956 | info->var.blue.offset = 0; | |
957 | info->var.red.length = 8; | |
958 | info->var.green.length = 8; | |
959 | info->var.blue.length = 8; | |
960 | info->var.transp.offset = 24; | |
961 | info->var.transp.length = 8; | |
962 | break; | |
963 | default: | |
964 | break; | |
965 | } | |
966 | ||
967 | info->var.xres = fb_width; | |
968 | info->var.yres = fb_height; | |
969 | } | |
970 | EXPORT_SYMBOL(drm_fb_helper_fill_var); | |
38651674 | 971 | |
0b4c0f3f DA |
972 | static int drm_fb_helper_probe_connector_modes(struct drm_fb_helper *fb_helper, |
973 | uint32_t maxX, | |
974 | uint32_t maxY) | |
38651674 DA |
975 | { |
976 | struct drm_connector *connector; | |
977 | int count = 0; | |
0b4c0f3f | 978 | int i; |
38651674 | 979 | |
0b4c0f3f DA |
980 | for (i = 0; i < fb_helper->connector_count; i++) { |
981 | connector = fb_helper->connector_info[i]->connector; | |
38651674 DA |
982 | count += connector->funcs->fill_modes(connector, maxX, maxY); |
983 | } | |
984 | ||
985 | return count; | |
986 | } | |
987 | ||
0b4c0f3f | 988 | static struct drm_display_mode *drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, int width, int height) |
38651674 DA |
989 | { |
990 | struct drm_display_mode *mode; | |
991 | ||
0b4c0f3f | 992 | list_for_each_entry(mode, &fb_connector->connector->modes, head) { |
38651674 DA |
993 | if (drm_mode_width(mode) > width || |
994 | drm_mode_height(mode) > height) | |
995 | continue; | |
996 | if (mode->type & DRM_MODE_TYPE_PREFERRED) | |
997 | return mode; | |
998 | } | |
999 | return NULL; | |
1000 | } | |
1001 | ||
0b4c0f3f | 1002 | static bool drm_has_cmdline_mode(struct drm_fb_helper_connector *fb_connector) |
38651674 | 1003 | { |
38651674 | 1004 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
0b4c0f3f | 1005 | cmdline_mode = &fb_connector->cmdline_mode; |
38651674 DA |
1006 | return cmdline_mode->specified; |
1007 | } | |
1008 | ||
0b4c0f3f DA |
1009 | static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn, |
1010 | int width, int height) | |
38651674 | 1011 | { |
38651674 DA |
1012 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
1013 | struct drm_display_mode *mode = NULL; | |
1014 | ||
0b4c0f3f | 1015 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
38651674 DA |
1016 | if (cmdline_mode->specified == false) |
1017 | return mode; | |
1018 | ||
1019 | /* attempt to find a matching mode in the list of modes | |
1020 | * we have gotten so far, if not add a CVT mode that conforms | |
1021 | */ | |
1022 | if (cmdline_mode->rb || cmdline_mode->margins) | |
1023 | goto create_mode; | |
1024 | ||
0b4c0f3f | 1025 | list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { |
38651674 DA |
1026 | /* check width/height */ |
1027 | if (mode->hdisplay != cmdline_mode->xres || | |
1028 | mode->vdisplay != cmdline_mode->yres) | |
1029 | continue; | |
1030 | ||
1031 | if (cmdline_mode->refresh_specified) { | |
1032 | if (mode->vrefresh != cmdline_mode->refresh) | |
1033 | continue; | |
1034 | } | |
1035 | ||
1036 | if (cmdline_mode->interlace) { | |
1037 | if (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) | |
1038 | continue; | |
1039 | } | |
1040 | return mode; | |
1041 | } | |
1042 | ||
1043 | create_mode: | |
b829e011 AJ |
1044 | if (cmdline_mode->cvt) |
1045 | mode = drm_cvt_mode(fb_helper_conn->connector->dev, | |
1046 | cmdline_mode->xres, cmdline_mode->yres, | |
1047 | cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60, | |
1048 | cmdline_mode->rb, cmdline_mode->interlace, | |
1049 | cmdline_mode->margins); | |
1050 | else | |
1051 | mode = drm_gtf_mode(fb_helper_conn->connector->dev, | |
1052 | cmdline_mode->xres, cmdline_mode->yres, | |
1053 | cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60, | |
1054 | cmdline_mode->interlace, | |
1055 | cmdline_mode->margins); | |
38651674 | 1056 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
0b4c0f3f | 1057 | list_add(&mode->head, &fb_helper_conn->connector->modes); |
38651674 DA |
1058 | return mode; |
1059 | } | |
1060 | ||
1061 | static bool drm_connector_enabled(struct drm_connector *connector, bool strict) | |
1062 | { | |
1063 | bool enable; | |
1064 | ||
1065 | if (strict) { | |
1066 | enable = connector->status == connector_status_connected; | |
1067 | } else { | |
1068 | enable = connector->status != connector_status_disconnected; | |
1069 | } | |
1070 | return enable; | |
1071 | } | |
1072 | ||
0b4c0f3f DA |
1073 | static void drm_enable_connectors(struct drm_fb_helper *fb_helper, |
1074 | bool *enabled) | |
38651674 DA |
1075 | { |
1076 | bool any_enabled = false; | |
1077 | struct drm_connector *connector; | |
1078 | int i = 0; | |
1079 | ||
0b4c0f3f DA |
1080 | for (i = 0; i < fb_helper->connector_count; i++) { |
1081 | connector = fb_helper->connector_info[i]->connector; | |
38651674 DA |
1082 | enabled[i] = drm_connector_enabled(connector, true); |
1083 | DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, | |
1084 | enabled[i] ? "yes" : "no"); | |
1085 | any_enabled |= enabled[i]; | |
38651674 DA |
1086 | } |
1087 | ||
1088 | if (any_enabled) | |
1089 | return; | |
1090 | ||
0b4c0f3f DA |
1091 | for (i = 0; i < fb_helper->connector_count; i++) { |
1092 | connector = fb_helper->connector_info[i]->connector; | |
38651674 | 1093 | enabled[i] = drm_connector_enabled(connector, false); |
38651674 DA |
1094 | } |
1095 | } | |
1096 | ||
1d42bbc8 DA |
1097 | static bool drm_target_cloned(struct drm_fb_helper *fb_helper, |
1098 | struct drm_display_mode **modes, | |
1099 | bool *enabled, int width, int height) | |
1100 | { | |
1101 | int count, i, j; | |
1102 | bool can_clone = false; | |
1103 | struct drm_fb_helper_connector *fb_helper_conn; | |
1104 | struct drm_display_mode *dmt_mode, *mode; | |
1105 | ||
1106 | /* only contemplate cloning in the single crtc case */ | |
1107 | if (fb_helper->crtc_count > 1) | |
1108 | return false; | |
1109 | ||
1110 | count = 0; | |
1111 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1112 | if (enabled[i]) | |
1113 | count++; | |
1114 | } | |
1115 | ||
1116 | /* only contemplate cloning if more than one connector is enabled */ | |
1117 | if (count <= 1) | |
1118 | return false; | |
1119 | ||
1120 | /* check the command line or if nothing common pick 1024x768 */ | |
1121 | can_clone = true; | |
1122 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1123 | if (!enabled[i]) | |
1124 | continue; | |
1125 | fb_helper_conn = fb_helper->connector_info[i]; | |
1126 | modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); | |
1127 | if (!modes[i]) { | |
1128 | can_clone = false; | |
1129 | break; | |
1130 | } | |
1131 | for (j = 0; j < i; j++) { | |
1132 | if (!enabled[j]) | |
1133 | continue; | |
1134 | if (!drm_mode_equal(modes[j], modes[i])) | |
1135 | can_clone = false; | |
1136 | } | |
1137 | } | |
1138 | ||
1139 | if (can_clone) { | |
1140 | DRM_DEBUG_KMS("can clone using command line\n"); | |
1141 | return true; | |
1142 | } | |
1143 | ||
1144 | /* try and find a 1024x768 mode on each connector */ | |
1145 | can_clone = true; | |
1146 | dmt_mode = drm_mode_find_dmt(fb_helper->dev, 1024, 768, 60); | |
1147 | ||
1148 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1149 | ||
1150 | if (!enabled[i]) | |
1151 | continue; | |
1152 | ||
1153 | fb_helper_conn = fb_helper->connector_info[i]; | |
1154 | list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { | |
1155 | if (drm_mode_equal(mode, dmt_mode)) | |
1156 | modes[i] = mode; | |
1157 | } | |
1158 | if (!modes[i]) | |
1159 | can_clone = false; | |
1160 | } | |
1161 | ||
1162 | if (can_clone) { | |
1163 | DRM_DEBUG_KMS("can clone using 1024x768\n"); | |
1164 | return true; | |
1165 | } | |
1166 | DRM_INFO("kms: can't enable cloning when we probably wanted to.\n"); | |
1167 | return false; | |
1168 | } | |
1169 | ||
0b4c0f3f | 1170 | static bool drm_target_preferred(struct drm_fb_helper *fb_helper, |
38651674 DA |
1171 | struct drm_display_mode **modes, |
1172 | bool *enabled, int width, int height) | |
1173 | { | |
0b4c0f3f DA |
1174 | struct drm_fb_helper_connector *fb_helper_conn; |
1175 | int i; | |
38651674 | 1176 | |
0b4c0f3f DA |
1177 | for (i = 0; i < fb_helper->connector_count; i++) { |
1178 | fb_helper_conn = fb_helper->connector_info[i]; | |
38651674 | 1179 | |
0b4c0f3f | 1180 | if (enabled[i] == false) |
38651674 | 1181 | continue; |
38651674 DA |
1182 | |
1183 | DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n", | |
0b4c0f3f | 1184 | fb_helper_conn->connector->base.id); |
38651674 DA |
1185 | |
1186 | /* got for command line mode first */ | |
0b4c0f3f | 1187 | modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); |
38651674 DA |
1188 | if (!modes[i]) { |
1189 | DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", | |
0b4c0f3f DA |
1190 | fb_helper_conn->connector->base.id); |
1191 | modes[i] = drm_has_preferred_mode(fb_helper_conn, width, height); | |
38651674 DA |
1192 | } |
1193 | /* No preferred modes, pick one off the list */ | |
0b4c0f3f DA |
1194 | if (!modes[i] && !list_empty(&fb_helper_conn->connector->modes)) { |
1195 | list_for_each_entry(modes[i], &fb_helper_conn->connector->modes, head) | |
38651674 DA |
1196 | break; |
1197 | } | |
1198 | DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : | |
1199 | "none"); | |
38651674 DA |
1200 | } |
1201 | return true; | |
1202 | } | |
1203 | ||
8be48d92 DA |
1204 | static int drm_pick_crtcs(struct drm_fb_helper *fb_helper, |
1205 | struct drm_fb_helper_crtc **best_crtcs, | |
38651674 DA |
1206 | struct drm_display_mode **modes, |
1207 | int n, int width, int height) | |
1208 | { | |
1209 | int c, o; | |
8be48d92 | 1210 | struct drm_device *dev = fb_helper->dev; |
38651674 DA |
1211 | struct drm_connector *connector; |
1212 | struct drm_connector_helper_funcs *connector_funcs; | |
1213 | struct drm_encoder *encoder; | |
8be48d92 | 1214 | struct drm_fb_helper_crtc *best_crtc; |
38651674 | 1215 | int my_score, best_score, score; |
8be48d92 | 1216 | struct drm_fb_helper_crtc **crtcs, *crtc; |
0b4c0f3f | 1217 | struct drm_fb_helper_connector *fb_helper_conn; |
38651674 | 1218 | |
0b4c0f3f | 1219 | if (n == fb_helper->connector_count) |
38651674 | 1220 | return 0; |
0b4c0f3f DA |
1221 | |
1222 | fb_helper_conn = fb_helper->connector_info[n]; | |
1223 | connector = fb_helper_conn->connector; | |
38651674 DA |
1224 | |
1225 | best_crtcs[n] = NULL; | |
1226 | best_crtc = NULL; | |
8be48d92 | 1227 | best_score = drm_pick_crtcs(fb_helper, best_crtcs, modes, n+1, width, height); |
38651674 DA |
1228 | if (modes[n] == NULL) |
1229 | return best_score; | |
1230 | ||
8be48d92 DA |
1231 | crtcs = kzalloc(dev->mode_config.num_connector * |
1232 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); | |
38651674 DA |
1233 | if (!crtcs) |
1234 | return best_score; | |
1235 | ||
1236 | my_score = 1; | |
1237 | if (connector->status == connector_status_connected) | |
1238 | my_score++; | |
0b4c0f3f | 1239 | if (drm_has_cmdline_mode(fb_helper_conn)) |
38651674 | 1240 | my_score++; |
0b4c0f3f | 1241 | if (drm_has_preferred_mode(fb_helper_conn, width, height)) |
38651674 DA |
1242 | my_score++; |
1243 | ||
1244 | connector_funcs = connector->helper_private; | |
1245 | encoder = connector_funcs->best_encoder(connector); | |
1246 | if (!encoder) | |
1247 | goto out; | |
1248 | ||
38651674 DA |
1249 | /* select a crtc for this connector and then attempt to configure |
1250 | remaining connectors */ | |
8be48d92 DA |
1251 | for (c = 0; c < fb_helper->crtc_count; c++) { |
1252 | crtc = &fb_helper->crtc_info[c]; | |
38651674 DA |
1253 | |
1254 | if ((encoder->possible_crtcs & (1 << c)) == 0) { | |
38651674 DA |
1255 | continue; |
1256 | } | |
1257 | ||
1258 | for (o = 0; o < n; o++) | |
1259 | if (best_crtcs[o] == crtc) | |
1260 | break; | |
1261 | ||
1262 | if (o < n) { | |
1d42bbc8 DA |
1263 | /* ignore cloning unless only a single crtc */ |
1264 | if (fb_helper->crtc_count > 1) | |
1265 | continue; | |
1266 | ||
1267 | if (!drm_mode_equal(modes[o], modes[n])) | |
1268 | continue; | |
38651674 DA |
1269 | } |
1270 | ||
1271 | crtcs[n] = crtc; | |
8be48d92 DA |
1272 | memcpy(crtcs, best_crtcs, n * sizeof(struct drm_fb_helper_crtc *)); |
1273 | score = my_score + drm_pick_crtcs(fb_helper, crtcs, modes, n + 1, | |
38651674 DA |
1274 | width, height); |
1275 | if (score > best_score) { | |
1276 | best_crtc = crtc; | |
1277 | best_score = score; | |
1278 | memcpy(best_crtcs, crtcs, | |
1279 | dev->mode_config.num_connector * | |
8be48d92 | 1280 | sizeof(struct drm_fb_helper_crtc *)); |
38651674 | 1281 | } |
38651674 DA |
1282 | } |
1283 | out: | |
1284 | kfree(crtcs); | |
1285 | return best_score; | |
1286 | } | |
1287 | ||
8be48d92 | 1288 | static void drm_setup_crtcs(struct drm_fb_helper *fb_helper) |
38651674 | 1289 | { |
8be48d92 DA |
1290 | struct drm_device *dev = fb_helper->dev; |
1291 | struct drm_fb_helper_crtc **crtcs; | |
38651674 DA |
1292 | struct drm_display_mode **modes; |
1293 | struct drm_encoder *encoder; | |
8be48d92 | 1294 | struct drm_mode_set *modeset; |
38651674 DA |
1295 | bool *enabled; |
1296 | int width, height; | |
1297 | int i, ret; | |
1298 | ||
1299 | DRM_DEBUG_KMS("\n"); | |
1300 | ||
1301 | width = dev->mode_config.max_width; | |
1302 | height = dev->mode_config.max_height; | |
1303 | ||
1304 | /* clean out all the encoder/crtc combos */ | |
1305 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
1306 | encoder->crtc = NULL; | |
1307 | } | |
1308 | ||
1309 | crtcs = kcalloc(dev->mode_config.num_connector, | |
8be48d92 | 1310 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); |
38651674 DA |
1311 | modes = kcalloc(dev->mode_config.num_connector, |
1312 | sizeof(struct drm_display_mode *), GFP_KERNEL); | |
1313 | enabled = kcalloc(dev->mode_config.num_connector, | |
1314 | sizeof(bool), GFP_KERNEL); | |
1315 | ||
0b4c0f3f | 1316 | drm_enable_connectors(fb_helper, enabled); |
38651674 | 1317 | |
1d42bbc8 DA |
1318 | ret = drm_target_cloned(fb_helper, modes, enabled, width, height); |
1319 | if (!ret) { | |
1320 | ret = drm_target_preferred(fb_helper, modes, enabled, width, height); | |
1321 | if (!ret) | |
1322 | DRM_ERROR("Unable to find initial modes\n"); | |
1323 | } | |
38651674 DA |
1324 | |
1325 | DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height); | |
1326 | ||
8be48d92 DA |
1327 | drm_pick_crtcs(fb_helper, crtcs, modes, 0, width, height); |
1328 | ||
1329 | /* need to set the modesets up here for use later */ | |
1330 | /* fill out the connector<->crtc mappings into the modesets */ | |
1331 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
1332 | modeset = &fb_helper->crtc_info[i].mode_set; | |
1333 | modeset->num_connectors = 0; | |
1334 | } | |
38651674 | 1335 | |
0b4c0f3f | 1336 | for (i = 0; i < fb_helper->connector_count; i++) { |
38651674 | 1337 | struct drm_display_mode *mode = modes[i]; |
8be48d92 DA |
1338 | struct drm_fb_helper_crtc *fb_crtc = crtcs[i]; |
1339 | modeset = &fb_crtc->mode_set; | |
38651674 | 1340 | |
8be48d92 | 1341 | if (mode && fb_crtc) { |
38651674 | 1342 | DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", |
8be48d92 DA |
1343 | mode->name, fb_crtc->mode_set.crtc->base.id); |
1344 | fb_crtc->desired_mode = mode; | |
1345 | if (modeset->mode) | |
1346 | drm_mode_destroy(dev, modeset->mode); | |
1347 | modeset->mode = drm_mode_duplicate(dev, | |
1348 | fb_crtc->desired_mode); | |
0b4c0f3f | 1349 | modeset->connectors[modeset->num_connectors++] = fb_helper->connector_info[i]->connector; |
38651674 | 1350 | } |
38651674 DA |
1351 | } |
1352 | ||
1353 | kfree(crtcs); | |
1354 | kfree(modes); | |
1355 | kfree(enabled); | |
1356 | } | |
1357 | ||
1358 | /** | |
1359 | * drm_helper_initial_config - setup a sane initial connector configuration | |
1360 | * @dev: DRM device | |
1361 | * | |
1362 | * LOCKING: | |
1363 | * Called at init time, must take mode config lock. | |
1364 | * | |
1365 | * Scan the CRTCs and connectors and try to put together an initial setup. | |
1366 | * At the moment, this is a cloned configuration across all heads with | |
1367 | * a new framebuffer object as the backing store. | |
1368 | * | |
1369 | * RETURNS: | |
1370 | * Zero if everything went ok, nonzero otherwise. | |
1371 | */ | |
4abe3520 | 1372 | bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel) |
38651674 | 1373 | { |
8be48d92 | 1374 | struct drm_device *dev = fb_helper->dev; |
38651674 DA |
1375 | int count = 0; |
1376 | ||
1377 | /* disable all the possible outputs/crtcs before entering KMS mode */ | |
8be48d92 | 1378 | drm_helper_disable_unused_functions(fb_helper->dev); |
38651674 | 1379 | |
0b4c0f3f | 1380 | drm_fb_helper_parse_command_line(fb_helper); |
38651674 | 1381 | |
0b4c0f3f DA |
1382 | count = drm_fb_helper_probe_connector_modes(fb_helper, |
1383 | dev->mode_config.max_width, | |
1384 | dev->mode_config.max_height); | |
38651674 DA |
1385 | /* |
1386 | * we shouldn't end up with no modes here. | |
1387 | */ | |
5c4426a7 | 1388 | if (count == 0) { |
eb1f8e4f | 1389 | printk(KERN_INFO "No connectors reported connected with modes\n"); |
5c4426a7 | 1390 | } |
8be48d92 | 1391 | drm_setup_crtcs(fb_helper); |
38651674 | 1392 | |
4abe3520 | 1393 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
38651674 | 1394 | } |
8be48d92 | 1395 | EXPORT_SYMBOL(drm_fb_helper_initial_config); |
38651674 | 1396 | |
eb1f8e4f | 1397 | bool drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper) |
38651674 | 1398 | { |
5c4426a7 | 1399 | int count = 0; |
4abe3520 | 1400 | u32 max_width, max_height, bpp_sel; |
4abe3520 DA |
1401 | bool bound = false, crtcs_bound = false; |
1402 | struct drm_crtc *crtc; | |
5c4426a7 | 1403 | |
eb1f8e4f DA |
1404 | if (!fb_helper->fb) |
1405 | return false; | |
4abe3520 | 1406 | |
4abe3520 DA |
1407 | list_for_each_entry(crtc, &fb_helper->dev->mode_config.crtc_list, head) { |
1408 | if (crtc->fb) | |
1409 | crtcs_bound = true; | |
1410 | if (crtc->fb == fb_helper->fb) | |
1411 | bound = true; | |
1412 | } | |
1413 | ||
eb1f8e4f | 1414 | if (!bound && crtcs_bound) { |
4abe3520 | 1415 | fb_helper->delayed_hotplug = true; |
eb1f8e4f | 1416 | return false; |
4abe3520 | 1417 | } |
eb1f8e4f | 1418 | DRM_DEBUG_KMS("\n"); |
4abe3520 | 1419 | |
eb1f8e4f DA |
1420 | max_width = fb_helper->fb->width; |
1421 | max_height = fb_helper->fb->height; | |
1422 | bpp_sel = fb_helper->fb->bits_per_pixel; | |
5c4426a7 | 1423 | |
eb1f8e4f DA |
1424 | count = drm_fb_helper_probe_connector_modes(fb_helper, max_width, |
1425 | max_height); | |
1426 | drm_setup_crtcs(fb_helper); | |
4abe3520 | 1427 | |
eb1f8e4f | 1428 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
5c4426a7 | 1429 | } |
eb1f8e4f | 1430 | EXPORT_SYMBOL(drm_fb_helper_hotplug_event); |
5c4426a7 | 1431 |