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': | |
149 | if (!cvt) | |
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 | { | |
267 | DRM_ERROR("panic occurred, switching back to text console\n"); | |
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; |
785b93ef DA |
318 | struct drm_encoder *encoder; |
319 | int i; | |
320 | ||
321 | /* | |
322 | * For each CRTC in this fb, turn the crtc on then, | |
323 | * find all associated encoders and turn them on. | |
324 | */ | |
8be48d92 | 325 | mutex_lock(&dev->mode_config.mutex); |
e87b2c42 | 326 | for (i = 0; i < fb_helper->crtc_count; i++) { |
8be48d92 DA |
327 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
328 | crtc_funcs = crtc->helper_private; | |
785b93ef | 329 | |
8be48d92 DA |
330 | if (!crtc->enabled) |
331 | continue; | |
332 | ||
333 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); | |
785b93ef | 334 | |
785b93ef | 335 | |
8be48d92 DA |
336 | /* Found a CRTC on this fb, now find encoders */ |
337 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
338 | if (encoder->crtc == crtc) { | |
339 | struct drm_encoder_helper_funcs *encoder_funcs; | |
785b93ef | 340 | |
8be48d92 DA |
341 | encoder_funcs = encoder->helper_private; |
342 | encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); | |
785b93ef DA |
343 | } |
344 | } | |
345 | } | |
8be48d92 | 346 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
347 | } |
348 | ||
349 | static void drm_fb_helper_off(struct fb_info *info, int dpms_mode) | |
350 | { | |
351 | struct drm_fb_helper *fb_helper = info->par; | |
352 | struct drm_device *dev = fb_helper->dev; | |
353 | struct drm_crtc *crtc; | |
8be48d92 | 354 | struct drm_crtc_helper_funcs *crtc_funcs; |
785b93ef DA |
355 | struct drm_encoder *encoder; |
356 | int i; | |
357 | ||
358 | /* | |
359 | * For each CRTC in this fb, find all associated encoders | |
360 | * and turn them off, then turn off the CRTC. | |
361 | */ | |
8be48d92 | 362 | mutex_lock(&dev->mode_config.mutex); |
e87b2c42 | 363 | for (i = 0; i < fb_helper->crtc_count; i++) { |
8be48d92 DA |
364 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
365 | crtc_funcs = crtc->helper_private; | |
e87b2c42 | 366 | |
8be48d92 DA |
367 | if (!crtc->enabled) |
368 | continue; | |
e87b2c42 | 369 | |
8be48d92 DA |
370 | /* Found a CRTC on this fb, now find encoders */ |
371 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
372 | if (encoder->crtc == crtc) { | |
373 | struct drm_encoder_helper_funcs *encoder_funcs; | |
e87b2c42 | 374 | |
8be48d92 DA |
375 | encoder_funcs = encoder->helper_private; |
376 | encoder_funcs->dpms(encoder, dpms_mode); | |
e87b2c42 | 377 | } |
785b93ef | 378 | } |
8be48d92 | 379 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF); |
785b93ef | 380 | } |
8be48d92 | 381 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
382 | } |
383 | ||
384 | int drm_fb_helper_blank(int blank, struct fb_info *info) | |
385 | { | |
386 | switch (blank) { | |
731b5a15 | 387 | /* Display: On; HSync: On, VSync: On */ |
785b93ef DA |
388 | case FB_BLANK_UNBLANK: |
389 | drm_fb_helper_on(info); | |
390 | break; | |
731b5a15 | 391 | /* Display: Off; HSync: On, VSync: On */ |
785b93ef | 392 | case FB_BLANK_NORMAL: |
5fd4df4d | 393 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); |
785b93ef | 394 | break; |
731b5a15 | 395 | /* Display: Off; HSync: Off, VSync: On */ |
785b93ef DA |
396 | case FB_BLANK_HSYNC_SUSPEND: |
397 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); | |
398 | break; | |
731b5a15 | 399 | /* Display: Off; HSync: On, VSync: Off */ |
785b93ef DA |
400 | case FB_BLANK_VSYNC_SUSPEND: |
401 | drm_fb_helper_off(info, DRM_MODE_DPMS_SUSPEND); | |
402 | break; | |
731b5a15 | 403 | /* Display: Off; HSync: Off, VSync: Off */ |
785b93ef DA |
404 | case FB_BLANK_POWERDOWN: |
405 | drm_fb_helper_off(info, DRM_MODE_DPMS_OFF); | |
406 | break; | |
407 | } | |
408 | return 0; | |
409 | } | |
410 | EXPORT_SYMBOL(drm_fb_helper_blank); | |
411 | ||
412 | static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) | |
413 | { | |
414 | int i; | |
415 | ||
0b4c0f3f DA |
416 | for (i = 0; i < helper->connector_count; i++) |
417 | kfree(helper->connector_info[i]); | |
418 | kfree(helper->connector_info); | |
785b93ef DA |
419 | for (i = 0; i < helper->crtc_count; i++) |
420 | kfree(helper->crtc_info[i].mode_set.connectors); | |
421 | kfree(helper->crtc_info); | |
422 | } | |
423 | ||
4abe3520 DA |
424 | int drm_fb_helper_init(struct drm_device *dev, |
425 | struct drm_fb_helper *fb_helper, | |
eb1f8e4f | 426 | int crtc_count, int max_conn_count) |
785b93ef | 427 | { |
785b93ef DA |
428 | struct drm_crtc *crtc; |
429 | int ret = 0; | |
430 | int i; | |
431 | ||
4abe3520 | 432 | fb_helper->dev = dev; |
4abe3520 DA |
433 | |
434 | INIT_LIST_HEAD(&fb_helper->kernel_fb_list); | |
435 | ||
436 | fb_helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL); | |
437 | if (!fb_helper->crtc_info) | |
785b93ef DA |
438 | return -ENOMEM; |
439 | ||
4abe3520 DA |
440 | fb_helper->crtc_count = crtc_count; |
441 | fb_helper->connector_info = kcalloc(dev->mode_config.num_connector, sizeof(struct drm_fb_helper_connector *), GFP_KERNEL); | |
442 | if (!fb_helper->connector_info) { | |
443 | kfree(fb_helper->crtc_info); | |
0b4c0f3f DA |
444 | return -ENOMEM; |
445 | } | |
4abe3520 | 446 | fb_helper->connector_count = 0; |
785b93ef DA |
447 | |
448 | for (i = 0; i < crtc_count; i++) { | |
4abe3520 | 449 | fb_helper->crtc_info[i].mode_set.connectors = |
785b93ef DA |
450 | kcalloc(max_conn_count, |
451 | sizeof(struct drm_connector *), | |
452 | GFP_KERNEL); | |
453 | ||
4abe3520 | 454 | if (!fb_helper->crtc_info[i].mode_set.connectors) { |
785b93ef DA |
455 | ret = -ENOMEM; |
456 | goto out_free; | |
457 | } | |
4abe3520 | 458 | fb_helper->crtc_info[i].mode_set.num_connectors = 0; |
785b93ef DA |
459 | } |
460 | ||
461 | i = 0; | |
462 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
4abe3520 DA |
463 | fb_helper->crtc_info[i].crtc_id = crtc->base.id; |
464 | fb_helper->crtc_info[i].mode_set.crtc = crtc; | |
785b93ef DA |
465 | i++; |
466 | } | |
4abe3520 | 467 | fb_helper->conn_limit = max_conn_count; |
785b93ef DA |
468 | return 0; |
469 | out_free: | |
4abe3520 | 470 | drm_fb_helper_crtc_free(fb_helper); |
785b93ef DA |
471 | return -ENOMEM; |
472 | } | |
4abe3520 DA |
473 | EXPORT_SYMBOL(drm_fb_helper_init); |
474 | ||
475 | void drm_fb_helper_fini(struct drm_fb_helper *fb_helper) | |
476 | { | |
477 | if (!list_empty(&fb_helper->kernel_fb_list)) { | |
478 | list_del(&fb_helper->kernel_fb_list); | |
479 | if (list_empty(&kernel_fb_helper_list)) { | |
3da1f33e | 480 | printk(KERN_INFO "drm: unregistered panic notifier\n"); |
4abe3520 DA |
481 | atomic_notifier_chain_unregister(&panic_notifier_list, |
482 | &paniced); | |
483 | unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
484 | } | |
485 | } | |
486 | ||
487 | drm_fb_helper_crtc_free(fb_helper); | |
488 | ||
4abe3520 DA |
489 | } |
490 | EXPORT_SYMBOL(drm_fb_helper_fini); | |
785b93ef | 491 | |
c850cb78 | 492 | static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, |
b8c00ac5 DA |
493 | u16 blue, u16 regno, struct fb_info *info) |
494 | { | |
495 | struct drm_fb_helper *fb_helper = info->par; | |
496 | struct drm_framebuffer *fb = fb_helper->fb; | |
497 | int pindex; | |
498 | ||
c850cb78 DA |
499 | if (info->fix.visual == FB_VISUAL_TRUECOLOR) { |
500 | u32 *palette; | |
501 | u32 value; | |
502 | /* place color in psuedopalette */ | |
503 | if (regno > 16) | |
504 | return -EINVAL; | |
505 | palette = (u32 *)info->pseudo_palette; | |
506 | red >>= (16 - info->var.red.length); | |
507 | green >>= (16 - info->var.green.length); | |
508 | blue >>= (16 - info->var.blue.length); | |
509 | value = (red << info->var.red.offset) | | |
510 | (green << info->var.green.offset) | | |
511 | (blue << info->var.blue.offset); | |
512 | palette[regno] = value; | |
513 | return 0; | |
514 | } | |
515 | ||
b8c00ac5 DA |
516 | pindex = regno; |
517 | ||
518 | if (fb->bits_per_pixel == 16) { | |
519 | pindex = regno << 3; | |
520 | ||
521 | if (fb->depth == 16 && regno > 63) | |
c850cb78 | 522 | return -EINVAL; |
b8c00ac5 | 523 | if (fb->depth == 15 && regno > 31) |
c850cb78 | 524 | return -EINVAL; |
b8c00ac5 DA |
525 | |
526 | if (fb->depth == 16) { | |
527 | u16 r, g, b; | |
528 | int i; | |
529 | if (regno < 32) { | |
530 | for (i = 0; i < 8; i++) | |
531 | fb_helper->funcs->gamma_set(crtc, red, | |
532 | green, blue, pindex + i); | |
533 | } | |
534 | ||
535 | fb_helper->funcs->gamma_get(crtc, &r, | |
536 | &g, &b, | |
537 | pindex >> 1); | |
538 | ||
539 | for (i = 0; i < 4; i++) | |
540 | fb_helper->funcs->gamma_set(crtc, r, | |
541 | green, b, | |
542 | (pindex >> 1) + i); | |
543 | } | |
544 | } | |
545 | ||
546 | if (fb->depth != 16) | |
547 | fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex); | |
c850cb78 | 548 | return 0; |
b8c00ac5 DA |
549 | } |
550 | ||
068143d3 DA |
551 | int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) |
552 | { | |
553 | struct drm_fb_helper *fb_helper = info->par; | |
8be48d92 | 554 | struct drm_crtc_helper_funcs *crtc_funcs; |
068143d3 DA |
555 | u16 *red, *green, *blue, *transp; |
556 | struct drm_crtc *crtc; | |
557 | int i, rc = 0; | |
558 | int start; | |
559 | ||
8be48d92 DA |
560 | for (i = 0; i < fb_helper->crtc_count; i++) { |
561 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
562 | crtc_funcs = crtc->helper_private; | |
068143d3 DA |
563 | |
564 | red = cmap->red; | |
565 | green = cmap->green; | |
566 | blue = cmap->blue; | |
567 | transp = cmap->transp; | |
568 | start = cmap->start; | |
569 | ||
570 | for (i = 0; i < cmap->len; i++) { | |
571 | u16 hred, hgreen, hblue, htransp = 0xffff; | |
572 | ||
573 | hred = *red++; | |
574 | hgreen = *green++; | |
575 | hblue = *blue++; | |
576 | ||
577 | if (transp) | |
578 | htransp = *transp++; | |
579 | ||
c850cb78 DA |
580 | rc = setcolreg(crtc, hred, hgreen, hblue, start++, info); |
581 | if (rc) | |
582 | return rc; | |
068143d3 DA |
583 | } |
584 | crtc_funcs->load_lut(crtc); | |
585 | } | |
586 | return rc; | |
587 | } | |
588 | EXPORT_SYMBOL(drm_fb_helper_setcmap); | |
589 | ||
785b93ef DA |
590 | int drm_fb_helper_check_var(struct fb_var_screeninfo *var, |
591 | struct fb_info *info) | |
592 | { | |
593 | struct drm_fb_helper *fb_helper = info->par; | |
594 | struct drm_framebuffer *fb = fb_helper->fb; | |
595 | int depth; | |
596 | ||
5349ef31 | 597 | if (var->pixclock != 0) |
785b93ef DA |
598 | return -EINVAL; |
599 | ||
600 | /* Need to resize the fb object !!! */ | |
509c7d83 DA |
601 | if (var->bits_per_pixel > fb->bits_per_pixel || var->xres > fb->width || var->yres > fb->height) { |
602 | DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb " | |
603 | "object %dx%d-%d > %dx%d-%d\n", var->xres, var->yres, var->bits_per_pixel, | |
604 | fb->width, fb->height, fb->bits_per_pixel); | |
785b93ef DA |
605 | return -EINVAL; |
606 | } | |
607 | ||
608 | switch (var->bits_per_pixel) { | |
609 | case 16: | |
610 | depth = (var->green.length == 6) ? 16 : 15; | |
611 | break; | |
612 | case 32: | |
613 | depth = (var->transp.length > 0) ? 32 : 24; | |
614 | break; | |
615 | default: | |
616 | depth = var->bits_per_pixel; | |
617 | break; | |
618 | } | |
619 | ||
620 | switch (depth) { | |
621 | case 8: | |
622 | var->red.offset = 0; | |
623 | var->green.offset = 0; | |
624 | var->blue.offset = 0; | |
625 | var->red.length = 8; | |
626 | var->green.length = 8; | |
627 | var->blue.length = 8; | |
628 | var->transp.length = 0; | |
629 | var->transp.offset = 0; | |
630 | break; | |
631 | case 15: | |
632 | var->red.offset = 10; | |
633 | var->green.offset = 5; | |
634 | var->blue.offset = 0; | |
635 | var->red.length = 5; | |
636 | var->green.length = 5; | |
637 | var->blue.length = 5; | |
638 | var->transp.length = 1; | |
639 | var->transp.offset = 15; | |
640 | break; | |
641 | case 16: | |
642 | var->red.offset = 11; | |
643 | var->green.offset = 5; | |
644 | var->blue.offset = 0; | |
645 | var->red.length = 5; | |
646 | var->green.length = 6; | |
647 | var->blue.length = 5; | |
648 | var->transp.length = 0; | |
649 | var->transp.offset = 0; | |
650 | break; | |
651 | case 24: | |
652 | var->red.offset = 16; | |
653 | var->green.offset = 8; | |
654 | var->blue.offset = 0; | |
655 | var->red.length = 8; | |
656 | var->green.length = 8; | |
657 | var->blue.length = 8; | |
658 | var->transp.length = 0; | |
659 | var->transp.offset = 0; | |
660 | break; | |
661 | case 32: | |
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 = 8; | |
669 | var->transp.offset = 24; | |
670 | break; | |
671 | default: | |
672 | return -EINVAL; | |
673 | } | |
674 | return 0; | |
675 | } | |
676 | EXPORT_SYMBOL(drm_fb_helper_check_var); | |
677 | ||
678 | /* this will let fbcon do the mode init */ | |
679 | int drm_fb_helper_set_par(struct fb_info *info) | |
680 | { | |
681 | struct drm_fb_helper *fb_helper = info->par; | |
682 | struct drm_device *dev = fb_helper->dev; | |
683 | struct fb_var_screeninfo *var = &info->var; | |
684 | struct drm_crtc *crtc; | |
685 | int ret; | |
686 | int i; | |
687 | ||
5349ef31 | 688 | if (var->pixclock != 0) { |
172e91f5 | 689 | DRM_ERROR("PIXEL CLOCK SET\n"); |
785b93ef DA |
690 | return -EINVAL; |
691 | } | |
692 | ||
8be48d92 DA |
693 | mutex_lock(&dev->mode_config.mutex); |
694 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
695 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
0b4c0f3f DA |
696 | ret = crtc->funcs->set_config(&fb_helper->crtc_info[i].mode_set); |
697 | if (ret) { | |
785b93ef | 698 | mutex_unlock(&dev->mode_config.mutex); |
0b4c0f3f | 699 | return ret; |
785b93ef DA |
700 | } |
701 | } | |
8be48d92 | 702 | mutex_unlock(&dev->mode_config.mutex); |
4abe3520 DA |
703 | |
704 | if (fb_helper->delayed_hotplug) { | |
705 | fb_helper->delayed_hotplug = false; | |
eb1f8e4f | 706 | drm_fb_helper_hotplug_event(fb_helper); |
4abe3520 | 707 | } |
785b93ef DA |
708 | return 0; |
709 | } | |
710 | EXPORT_SYMBOL(drm_fb_helper_set_par); | |
711 | ||
712 | int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, | |
713 | struct fb_info *info) | |
714 | { | |
715 | struct drm_fb_helper *fb_helper = info->par; | |
716 | struct drm_device *dev = fb_helper->dev; | |
717 | struct drm_mode_set *modeset; | |
718 | struct drm_crtc *crtc; | |
719 | int ret = 0; | |
720 | int i; | |
721 | ||
8be48d92 DA |
722 | mutex_lock(&dev->mode_config.mutex); |
723 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
724 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
785b93ef DA |
725 | |
726 | modeset = &fb_helper->crtc_info[i].mode_set; | |
727 | ||
728 | modeset->x = var->xoffset; | |
729 | modeset->y = var->yoffset; | |
730 | ||
731 | if (modeset->num_connectors) { | |
785b93ef | 732 | ret = crtc->funcs->set_config(modeset); |
785b93ef DA |
733 | if (!ret) { |
734 | info->var.xoffset = var->xoffset; | |
735 | info->var.yoffset = var->yoffset; | |
736 | } | |
737 | } | |
738 | } | |
8be48d92 | 739 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
740 | return ret; |
741 | } | |
742 | EXPORT_SYMBOL(drm_fb_helper_pan_display); | |
743 | ||
8be48d92 DA |
744 | int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, |
745 | int preferred_bpp) | |
785b93ef | 746 | { |
785b93ef DA |
747 | int new_fb = 0; |
748 | int crtc_count = 0; | |
4abe3520 | 749 | int i; |
785b93ef | 750 | struct fb_info *info; |
38651674 | 751 | struct drm_fb_helper_surface_size sizes; |
8be48d92 | 752 | int gamma_size = 0; |
38651674 DA |
753 | |
754 | memset(&sizes, 0, sizeof(struct drm_fb_helper_surface_size)); | |
755 | sizes.surface_depth = 24; | |
756 | sizes.surface_bpp = 32; | |
757 | sizes.fb_width = (unsigned)-1; | |
758 | sizes.fb_height = (unsigned)-1; | |
785b93ef | 759 | |
b8c00ac5 DA |
760 | /* if driver picks 8 or 16 by default use that |
761 | for both depth/bpp */ | |
38651674 DA |
762 | if (preferred_bpp != sizes.surface_bpp) { |
763 | sizes.surface_depth = sizes.surface_bpp = preferred_bpp; | |
b8c00ac5 | 764 | } |
785b93ef | 765 | /* first up get a count of crtcs now in use and new min/maxes width/heights */ |
0b4c0f3f DA |
766 | for (i = 0; i < fb_helper->connector_count; i++) { |
767 | struct drm_fb_helper_connector *fb_helper_conn = fb_helper->connector_info[i]; | |
8ef8678c DA |
768 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
769 | ||
0b4c0f3f | 770 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
d50ba256 DA |
771 | |
772 | if (cmdline_mode->bpp_specified) { | |
773 | switch (cmdline_mode->bpp) { | |
774 | case 8: | |
38651674 | 775 | sizes.surface_depth = sizes.surface_bpp = 8; |
d50ba256 DA |
776 | break; |
777 | case 15: | |
38651674 DA |
778 | sizes.surface_depth = 15; |
779 | sizes.surface_bpp = 16; | |
d50ba256 DA |
780 | break; |
781 | case 16: | |
38651674 | 782 | sizes.surface_depth = sizes.surface_bpp = 16; |
d50ba256 DA |
783 | break; |
784 | case 24: | |
38651674 | 785 | sizes.surface_depth = sizes.surface_bpp = 24; |
d50ba256 DA |
786 | break; |
787 | case 32: | |
38651674 DA |
788 | sizes.surface_depth = 24; |
789 | sizes.surface_bpp = 32; | |
d50ba256 DA |
790 | break; |
791 | } | |
792 | break; | |
793 | } | |
794 | } | |
795 | ||
8be48d92 DA |
796 | crtc_count = 0; |
797 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
798 | struct drm_display_mode *desired_mode; | |
799 | desired_mode = fb_helper->crtc_info[i].desired_mode; | |
800 | ||
801 | if (desired_mode) { | |
802 | if (gamma_size == 0) | |
803 | gamma_size = fb_helper->crtc_info[i].mode_set.crtc->gamma_size; | |
804 | if (desired_mode->hdisplay < sizes.fb_width) | |
805 | sizes.fb_width = desired_mode->hdisplay; | |
806 | if (desired_mode->vdisplay < sizes.fb_height) | |
807 | sizes.fb_height = desired_mode->vdisplay; | |
808 | if (desired_mode->hdisplay > sizes.surface_width) | |
809 | sizes.surface_width = desired_mode->hdisplay; | |
810 | if (desired_mode->vdisplay > sizes.surface_height) | |
811 | sizes.surface_height = desired_mode->vdisplay; | |
785b93ef DA |
812 | crtc_count++; |
813 | } | |
814 | } | |
815 | ||
38651674 | 816 | if (crtc_count == 0 || sizes.fb_width == -1 || sizes.fb_height == -1) { |
785b93ef DA |
817 | /* hmm everyone went away - assume VGA cable just fell out |
818 | and will come back later. */ | |
eb1f8e4f | 819 | DRM_INFO("Cannot find any crtc or sizes - going 1024x768\n"); |
19b4b445 DA |
820 | sizes.fb_width = sizes.surface_width = 1024; |
821 | sizes.fb_height = sizes.surface_height = 768; | |
785b93ef DA |
822 | } |
823 | ||
38651674 | 824 | /* push down into drivers */ |
4abe3520 | 825 | new_fb = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes); |
38651674 DA |
826 | if (new_fb < 0) |
827 | return new_fb; | |
785b93ef | 828 | |
38651674 | 829 | info = fb_helper->fbdev; |
785b93ef | 830 | |
8be48d92 DA |
831 | /* set the fb pointer */ |
832 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
833 | fb_helper->crtc_info[i].mode_set.fb = fb_helper->fb; | |
785b93ef | 834 | } |
785b93ef DA |
835 | |
836 | if (new_fb) { | |
5349ef31 | 837 | info->var.pixclock = 0; |
3bea21b6 | 838 | if (register_framebuffer(info) < 0) { |
785b93ef | 839 | return -EINVAL; |
3bea21b6 | 840 | } |
38651674 DA |
841 | |
842 | printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, | |
843 | info->fix.id); | |
844 | ||
785b93ef DA |
845 | } else { |
846 | drm_fb_helper_set_par(info); | |
847 | } | |
785b93ef DA |
848 | |
849 | /* Switch back to kernel console on panic */ | |
850 | /* multi card linked list maybe */ | |
851 | if (list_empty(&kernel_fb_helper_list)) { | |
3da1f33e | 852 | printk(KERN_INFO "drm: registered panic notifier\n"); |
785b93ef DA |
853 | atomic_notifier_chain_register(&panic_notifier_list, |
854 | &paniced); | |
855 | register_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
856 | } | |
38651674 DA |
857 | if (new_fb) |
858 | list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list); | |
859 | ||
785b93ef DA |
860 | return 0; |
861 | } | |
862 | EXPORT_SYMBOL(drm_fb_helper_single_fb_probe); | |
863 | ||
068143d3 DA |
864 | void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, |
865 | uint32_t depth) | |
785b93ef DA |
866 | { |
867 | info->fix.type = FB_TYPE_PACKED_PIXELS; | |
068143d3 | 868 | info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR : |
c850cb78 | 869 | FB_VISUAL_TRUECOLOR; |
785b93ef DA |
870 | info->fix.type_aux = 0; |
871 | info->fix.xpanstep = 1; /* doing it in hw */ | |
872 | info->fix.ypanstep = 1; /* doing it in hw */ | |
873 | info->fix.ywrapstep = 0; | |
3420e742 | 874 | info->fix.accel = FB_ACCEL_NONE; |
785b93ef DA |
875 | info->fix.type_aux = 0; |
876 | ||
877 | info->fix.line_length = pitch; | |
878 | return; | |
879 | } | |
880 | EXPORT_SYMBOL(drm_fb_helper_fill_fix); | |
881 | ||
38651674 | 882 | void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, |
785b93ef DA |
883 | uint32_t fb_width, uint32_t fb_height) |
884 | { | |
38651674 DA |
885 | struct drm_framebuffer *fb = fb_helper->fb; |
886 | info->pseudo_palette = fb_helper->pseudo_palette; | |
785b93ef DA |
887 | info->var.xres_virtual = fb->width; |
888 | info->var.yres_virtual = fb->height; | |
889 | info->var.bits_per_pixel = fb->bits_per_pixel; | |
890 | info->var.xoffset = 0; | |
891 | info->var.yoffset = 0; | |
892 | info->var.activate = FB_ACTIVATE_NOW; | |
893 | info->var.height = -1; | |
894 | info->var.width = -1; | |
895 | ||
896 | switch (fb->depth) { | |
897 | case 8: | |
898 | info->var.red.offset = 0; | |
899 | info->var.green.offset = 0; | |
900 | info->var.blue.offset = 0; | |
901 | info->var.red.length = 8; /* 8bit DAC */ | |
902 | info->var.green.length = 8; | |
903 | info->var.blue.length = 8; | |
904 | info->var.transp.offset = 0; | |
905 | info->var.transp.length = 0; | |
906 | break; | |
907 | case 15: | |
908 | info->var.red.offset = 10; | |
909 | info->var.green.offset = 5; | |
910 | info->var.blue.offset = 0; | |
911 | info->var.red.length = 5; | |
912 | info->var.green.length = 5; | |
913 | info->var.blue.length = 5; | |
914 | info->var.transp.offset = 15; | |
915 | info->var.transp.length = 1; | |
916 | break; | |
917 | case 16: | |
918 | info->var.red.offset = 11; | |
919 | info->var.green.offset = 5; | |
920 | info->var.blue.offset = 0; | |
921 | info->var.red.length = 5; | |
922 | info->var.green.length = 6; | |
923 | info->var.blue.length = 5; | |
924 | info->var.transp.offset = 0; | |
925 | break; | |
926 | case 24: | |
927 | info->var.red.offset = 16; | |
928 | info->var.green.offset = 8; | |
929 | info->var.blue.offset = 0; | |
930 | info->var.red.length = 8; | |
931 | info->var.green.length = 8; | |
932 | info->var.blue.length = 8; | |
933 | info->var.transp.offset = 0; | |
934 | info->var.transp.length = 0; | |
935 | break; | |
936 | case 32: | |
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 = 24; | |
944 | info->var.transp.length = 8; | |
945 | break; | |
946 | default: | |
947 | break; | |
948 | } | |
949 | ||
950 | info->var.xres = fb_width; | |
951 | info->var.yres = fb_height; | |
952 | } | |
953 | EXPORT_SYMBOL(drm_fb_helper_fill_var); | |
38651674 | 954 | |
0b4c0f3f DA |
955 | static int drm_fb_helper_probe_connector_modes(struct drm_fb_helper *fb_helper, |
956 | uint32_t maxX, | |
957 | uint32_t maxY) | |
38651674 DA |
958 | { |
959 | struct drm_connector *connector; | |
960 | int count = 0; | |
0b4c0f3f | 961 | int i; |
38651674 | 962 | |
0b4c0f3f DA |
963 | for (i = 0; i < fb_helper->connector_count; i++) { |
964 | connector = fb_helper->connector_info[i]->connector; | |
38651674 DA |
965 | count += connector->funcs->fill_modes(connector, maxX, maxY); |
966 | } | |
967 | ||
968 | return count; | |
969 | } | |
970 | ||
0b4c0f3f | 971 | static struct drm_display_mode *drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, int width, int height) |
38651674 DA |
972 | { |
973 | struct drm_display_mode *mode; | |
974 | ||
0b4c0f3f | 975 | list_for_each_entry(mode, &fb_connector->connector->modes, head) { |
38651674 DA |
976 | if (drm_mode_width(mode) > width || |
977 | drm_mode_height(mode) > height) | |
978 | continue; | |
979 | if (mode->type & DRM_MODE_TYPE_PREFERRED) | |
980 | return mode; | |
981 | } | |
982 | return NULL; | |
983 | } | |
984 | ||
0b4c0f3f | 985 | static bool drm_has_cmdline_mode(struct drm_fb_helper_connector *fb_connector) |
38651674 | 986 | { |
38651674 | 987 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
0b4c0f3f | 988 | cmdline_mode = &fb_connector->cmdline_mode; |
38651674 DA |
989 | return cmdline_mode->specified; |
990 | } | |
991 | ||
0b4c0f3f DA |
992 | static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn, |
993 | int width, int height) | |
38651674 | 994 | { |
38651674 DA |
995 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
996 | struct drm_display_mode *mode = NULL; | |
997 | ||
0b4c0f3f | 998 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
38651674 DA |
999 | if (cmdline_mode->specified == false) |
1000 | return mode; | |
1001 | ||
1002 | /* attempt to find a matching mode in the list of modes | |
1003 | * we have gotten so far, if not add a CVT mode that conforms | |
1004 | */ | |
1005 | if (cmdline_mode->rb || cmdline_mode->margins) | |
1006 | goto create_mode; | |
1007 | ||
0b4c0f3f | 1008 | list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { |
38651674 DA |
1009 | /* check width/height */ |
1010 | if (mode->hdisplay != cmdline_mode->xres || | |
1011 | mode->vdisplay != cmdline_mode->yres) | |
1012 | continue; | |
1013 | ||
1014 | if (cmdline_mode->refresh_specified) { | |
1015 | if (mode->vrefresh != cmdline_mode->refresh) | |
1016 | continue; | |
1017 | } | |
1018 | ||
1019 | if (cmdline_mode->interlace) { | |
1020 | if (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) | |
1021 | continue; | |
1022 | } | |
1023 | return mode; | |
1024 | } | |
1025 | ||
1026 | create_mode: | |
0b4c0f3f | 1027 | mode = drm_cvt_mode(fb_helper_conn->connector->dev, cmdline_mode->xres, |
38651674 DA |
1028 | cmdline_mode->yres, |
1029 | cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60, | |
1030 | cmdline_mode->rb, cmdline_mode->interlace, | |
1031 | cmdline_mode->margins); | |
1032 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); | |
0b4c0f3f | 1033 | list_add(&mode->head, &fb_helper_conn->connector->modes); |
38651674 DA |
1034 | return mode; |
1035 | } | |
1036 | ||
1037 | static bool drm_connector_enabled(struct drm_connector *connector, bool strict) | |
1038 | { | |
1039 | bool enable; | |
1040 | ||
1041 | if (strict) { | |
1042 | enable = connector->status == connector_status_connected; | |
1043 | } else { | |
1044 | enable = connector->status != connector_status_disconnected; | |
1045 | } | |
1046 | return enable; | |
1047 | } | |
1048 | ||
0b4c0f3f DA |
1049 | static void drm_enable_connectors(struct drm_fb_helper *fb_helper, |
1050 | bool *enabled) | |
38651674 DA |
1051 | { |
1052 | bool any_enabled = false; | |
1053 | struct drm_connector *connector; | |
1054 | int i = 0; | |
1055 | ||
0b4c0f3f DA |
1056 | for (i = 0; i < fb_helper->connector_count; i++) { |
1057 | connector = fb_helper->connector_info[i]->connector; | |
38651674 DA |
1058 | enabled[i] = drm_connector_enabled(connector, true); |
1059 | DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, | |
1060 | enabled[i] ? "yes" : "no"); | |
1061 | any_enabled |= enabled[i]; | |
38651674 DA |
1062 | } |
1063 | ||
1064 | if (any_enabled) | |
1065 | return; | |
1066 | ||
0b4c0f3f DA |
1067 | for (i = 0; i < fb_helper->connector_count; i++) { |
1068 | connector = fb_helper->connector_info[i]->connector; | |
38651674 | 1069 | enabled[i] = drm_connector_enabled(connector, false); |
38651674 DA |
1070 | } |
1071 | } | |
1072 | ||
1d42bbc8 DA |
1073 | static bool drm_target_cloned(struct drm_fb_helper *fb_helper, |
1074 | struct drm_display_mode **modes, | |
1075 | bool *enabled, int width, int height) | |
1076 | { | |
1077 | int count, i, j; | |
1078 | bool can_clone = false; | |
1079 | struct drm_fb_helper_connector *fb_helper_conn; | |
1080 | struct drm_display_mode *dmt_mode, *mode; | |
1081 | ||
1082 | /* only contemplate cloning in the single crtc case */ | |
1083 | if (fb_helper->crtc_count > 1) | |
1084 | return false; | |
1085 | ||
1086 | count = 0; | |
1087 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1088 | if (enabled[i]) | |
1089 | count++; | |
1090 | } | |
1091 | ||
1092 | /* only contemplate cloning if more than one connector is enabled */ | |
1093 | if (count <= 1) | |
1094 | return false; | |
1095 | ||
1096 | /* check the command line or if nothing common pick 1024x768 */ | |
1097 | can_clone = true; | |
1098 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1099 | if (!enabled[i]) | |
1100 | continue; | |
1101 | fb_helper_conn = fb_helper->connector_info[i]; | |
1102 | modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); | |
1103 | if (!modes[i]) { | |
1104 | can_clone = false; | |
1105 | break; | |
1106 | } | |
1107 | for (j = 0; j < i; j++) { | |
1108 | if (!enabled[j]) | |
1109 | continue; | |
1110 | if (!drm_mode_equal(modes[j], modes[i])) | |
1111 | can_clone = false; | |
1112 | } | |
1113 | } | |
1114 | ||
1115 | if (can_clone) { | |
1116 | DRM_DEBUG_KMS("can clone using command line\n"); | |
1117 | return true; | |
1118 | } | |
1119 | ||
1120 | /* try and find a 1024x768 mode on each connector */ | |
1121 | can_clone = true; | |
1122 | dmt_mode = drm_mode_find_dmt(fb_helper->dev, 1024, 768, 60); | |
1123 | ||
1124 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1125 | ||
1126 | if (!enabled[i]) | |
1127 | continue; | |
1128 | ||
1129 | fb_helper_conn = fb_helper->connector_info[i]; | |
1130 | list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { | |
1131 | if (drm_mode_equal(mode, dmt_mode)) | |
1132 | modes[i] = mode; | |
1133 | } | |
1134 | if (!modes[i]) | |
1135 | can_clone = false; | |
1136 | } | |
1137 | ||
1138 | if (can_clone) { | |
1139 | DRM_DEBUG_KMS("can clone using 1024x768\n"); | |
1140 | return true; | |
1141 | } | |
1142 | DRM_INFO("kms: can't enable cloning when we probably wanted to.\n"); | |
1143 | return false; | |
1144 | } | |
1145 | ||
0b4c0f3f | 1146 | static bool drm_target_preferred(struct drm_fb_helper *fb_helper, |
38651674 DA |
1147 | struct drm_display_mode **modes, |
1148 | bool *enabled, int width, int height) | |
1149 | { | |
0b4c0f3f DA |
1150 | struct drm_fb_helper_connector *fb_helper_conn; |
1151 | int i; | |
38651674 | 1152 | |
0b4c0f3f DA |
1153 | for (i = 0; i < fb_helper->connector_count; i++) { |
1154 | fb_helper_conn = fb_helper->connector_info[i]; | |
38651674 | 1155 | |
0b4c0f3f | 1156 | if (enabled[i] == false) |
38651674 | 1157 | continue; |
38651674 DA |
1158 | |
1159 | DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n", | |
0b4c0f3f | 1160 | fb_helper_conn->connector->base.id); |
38651674 DA |
1161 | |
1162 | /* got for command line mode first */ | |
0b4c0f3f | 1163 | modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); |
38651674 DA |
1164 | if (!modes[i]) { |
1165 | DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", | |
0b4c0f3f DA |
1166 | fb_helper_conn->connector->base.id); |
1167 | modes[i] = drm_has_preferred_mode(fb_helper_conn, width, height); | |
38651674 DA |
1168 | } |
1169 | /* No preferred modes, pick one off the list */ | |
0b4c0f3f DA |
1170 | if (!modes[i] && !list_empty(&fb_helper_conn->connector->modes)) { |
1171 | list_for_each_entry(modes[i], &fb_helper_conn->connector->modes, head) | |
38651674 DA |
1172 | break; |
1173 | } | |
1174 | DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : | |
1175 | "none"); | |
38651674 DA |
1176 | } |
1177 | return true; | |
1178 | } | |
1179 | ||
8be48d92 DA |
1180 | static int drm_pick_crtcs(struct drm_fb_helper *fb_helper, |
1181 | struct drm_fb_helper_crtc **best_crtcs, | |
38651674 DA |
1182 | struct drm_display_mode **modes, |
1183 | int n, int width, int height) | |
1184 | { | |
1185 | int c, o; | |
8be48d92 | 1186 | struct drm_device *dev = fb_helper->dev; |
38651674 DA |
1187 | struct drm_connector *connector; |
1188 | struct drm_connector_helper_funcs *connector_funcs; | |
1189 | struct drm_encoder *encoder; | |
8be48d92 | 1190 | struct drm_fb_helper_crtc *best_crtc; |
38651674 | 1191 | int my_score, best_score, score; |
8be48d92 | 1192 | struct drm_fb_helper_crtc **crtcs, *crtc; |
0b4c0f3f | 1193 | struct drm_fb_helper_connector *fb_helper_conn; |
38651674 | 1194 | |
0b4c0f3f | 1195 | if (n == fb_helper->connector_count) |
38651674 | 1196 | return 0; |
0b4c0f3f DA |
1197 | |
1198 | fb_helper_conn = fb_helper->connector_info[n]; | |
1199 | connector = fb_helper_conn->connector; | |
38651674 DA |
1200 | |
1201 | best_crtcs[n] = NULL; | |
1202 | best_crtc = NULL; | |
8be48d92 | 1203 | best_score = drm_pick_crtcs(fb_helper, best_crtcs, modes, n+1, width, height); |
38651674 DA |
1204 | if (modes[n] == NULL) |
1205 | return best_score; | |
1206 | ||
8be48d92 DA |
1207 | crtcs = kzalloc(dev->mode_config.num_connector * |
1208 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); | |
38651674 DA |
1209 | if (!crtcs) |
1210 | return best_score; | |
1211 | ||
1212 | my_score = 1; | |
1213 | if (connector->status == connector_status_connected) | |
1214 | my_score++; | |
0b4c0f3f | 1215 | if (drm_has_cmdline_mode(fb_helper_conn)) |
38651674 | 1216 | my_score++; |
0b4c0f3f | 1217 | if (drm_has_preferred_mode(fb_helper_conn, width, height)) |
38651674 DA |
1218 | my_score++; |
1219 | ||
1220 | connector_funcs = connector->helper_private; | |
1221 | encoder = connector_funcs->best_encoder(connector); | |
1222 | if (!encoder) | |
1223 | goto out; | |
1224 | ||
38651674 DA |
1225 | /* select a crtc for this connector and then attempt to configure |
1226 | remaining connectors */ | |
8be48d92 DA |
1227 | for (c = 0; c < fb_helper->crtc_count; c++) { |
1228 | crtc = &fb_helper->crtc_info[c]; | |
38651674 DA |
1229 | |
1230 | if ((encoder->possible_crtcs & (1 << c)) == 0) { | |
38651674 DA |
1231 | continue; |
1232 | } | |
1233 | ||
1234 | for (o = 0; o < n; o++) | |
1235 | if (best_crtcs[o] == crtc) | |
1236 | break; | |
1237 | ||
1238 | if (o < n) { | |
1d42bbc8 DA |
1239 | /* ignore cloning unless only a single crtc */ |
1240 | if (fb_helper->crtc_count > 1) | |
1241 | continue; | |
1242 | ||
1243 | if (!drm_mode_equal(modes[o], modes[n])) | |
1244 | continue; | |
38651674 DA |
1245 | } |
1246 | ||
1247 | crtcs[n] = crtc; | |
8be48d92 DA |
1248 | memcpy(crtcs, best_crtcs, n * sizeof(struct drm_fb_helper_crtc *)); |
1249 | score = my_score + drm_pick_crtcs(fb_helper, crtcs, modes, n + 1, | |
38651674 DA |
1250 | width, height); |
1251 | if (score > best_score) { | |
1252 | best_crtc = crtc; | |
1253 | best_score = score; | |
1254 | memcpy(best_crtcs, crtcs, | |
1255 | dev->mode_config.num_connector * | |
8be48d92 | 1256 | sizeof(struct drm_fb_helper_crtc *)); |
38651674 | 1257 | } |
38651674 DA |
1258 | } |
1259 | out: | |
1260 | kfree(crtcs); | |
1261 | return best_score; | |
1262 | } | |
1263 | ||
8be48d92 | 1264 | static void drm_setup_crtcs(struct drm_fb_helper *fb_helper) |
38651674 | 1265 | { |
8be48d92 DA |
1266 | struct drm_device *dev = fb_helper->dev; |
1267 | struct drm_fb_helper_crtc **crtcs; | |
38651674 DA |
1268 | struct drm_display_mode **modes; |
1269 | struct drm_encoder *encoder; | |
8be48d92 | 1270 | struct drm_mode_set *modeset; |
38651674 DA |
1271 | bool *enabled; |
1272 | int width, height; | |
1273 | int i, ret; | |
1274 | ||
1275 | DRM_DEBUG_KMS("\n"); | |
1276 | ||
1277 | width = dev->mode_config.max_width; | |
1278 | height = dev->mode_config.max_height; | |
1279 | ||
1280 | /* clean out all the encoder/crtc combos */ | |
1281 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
1282 | encoder->crtc = NULL; | |
1283 | } | |
1284 | ||
1285 | crtcs = kcalloc(dev->mode_config.num_connector, | |
8be48d92 | 1286 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); |
38651674 DA |
1287 | modes = kcalloc(dev->mode_config.num_connector, |
1288 | sizeof(struct drm_display_mode *), GFP_KERNEL); | |
1289 | enabled = kcalloc(dev->mode_config.num_connector, | |
1290 | sizeof(bool), GFP_KERNEL); | |
1291 | ||
0b4c0f3f | 1292 | drm_enable_connectors(fb_helper, enabled); |
38651674 | 1293 | |
1d42bbc8 DA |
1294 | ret = drm_target_cloned(fb_helper, modes, enabled, width, height); |
1295 | if (!ret) { | |
1296 | ret = drm_target_preferred(fb_helper, modes, enabled, width, height); | |
1297 | if (!ret) | |
1298 | DRM_ERROR("Unable to find initial modes\n"); | |
1299 | } | |
38651674 DA |
1300 | |
1301 | DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height); | |
1302 | ||
8be48d92 DA |
1303 | drm_pick_crtcs(fb_helper, crtcs, modes, 0, width, height); |
1304 | ||
1305 | /* need to set the modesets up here for use later */ | |
1306 | /* fill out the connector<->crtc mappings into the modesets */ | |
1307 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
1308 | modeset = &fb_helper->crtc_info[i].mode_set; | |
1309 | modeset->num_connectors = 0; | |
1310 | } | |
38651674 | 1311 | |
0b4c0f3f | 1312 | for (i = 0; i < fb_helper->connector_count; i++) { |
38651674 | 1313 | struct drm_display_mode *mode = modes[i]; |
8be48d92 DA |
1314 | struct drm_fb_helper_crtc *fb_crtc = crtcs[i]; |
1315 | modeset = &fb_crtc->mode_set; | |
38651674 | 1316 | |
8be48d92 | 1317 | if (mode && fb_crtc) { |
38651674 | 1318 | DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", |
8be48d92 DA |
1319 | mode->name, fb_crtc->mode_set.crtc->base.id); |
1320 | fb_crtc->desired_mode = mode; | |
1321 | if (modeset->mode) | |
1322 | drm_mode_destroy(dev, modeset->mode); | |
1323 | modeset->mode = drm_mode_duplicate(dev, | |
1324 | fb_crtc->desired_mode); | |
0b4c0f3f | 1325 | modeset->connectors[modeset->num_connectors++] = fb_helper->connector_info[i]->connector; |
38651674 | 1326 | } |
38651674 DA |
1327 | } |
1328 | ||
1329 | kfree(crtcs); | |
1330 | kfree(modes); | |
1331 | kfree(enabled); | |
1332 | } | |
1333 | ||
1334 | /** | |
1335 | * drm_helper_initial_config - setup a sane initial connector configuration | |
1336 | * @dev: DRM device | |
1337 | * | |
1338 | * LOCKING: | |
1339 | * Called at init time, must take mode config lock. | |
1340 | * | |
1341 | * Scan the CRTCs and connectors and try to put together an initial setup. | |
1342 | * At the moment, this is a cloned configuration across all heads with | |
1343 | * a new framebuffer object as the backing store. | |
1344 | * | |
1345 | * RETURNS: | |
1346 | * Zero if everything went ok, nonzero otherwise. | |
1347 | */ | |
4abe3520 | 1348 | bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel) |
38651674 | 1349 | { |
8be48d92 | 1350 | struct drm_device *dev = fb_helper->dev; |
38651674 DA |
1351 | int count = 0; |
1352 | ||
1353 | /* disable all the possible outputs/crtcs before entering KMS mode */ | |
8be48d92 | 1354 | drm_helper_disable_unused_functions(fb_helper->dev); |
38651674 | 1355 | |
0b4c0f3f | 1356 | drm_fb_helper_parse_command_line(fb_helper); |
38651674 | 1357 | |
0b4c0f3f DA |
1358 | count = drm_fb_helper_probe_connector_modes(fb_helper, |
1359 | dev->mode_config.max_width, | |
1360 | dev->mode_config.max_height); | |
38651674 DA |
1361 | /* |
1362 | * we shouldn't end up with no modes here. | |
1363 | */ | |
5c4426a7 | 1364 | if (count == 0) { |
eb1f8e4f | 1365 | printk(KERN_INFO "No connectors reported connected with modes\n"); |
5c4426a7 | 1366 | } |
8be48d92 | 1367 | drm_setup_crtcs(fb_helper); |
38651674 | 1368 | |
4abe3520 | 1369 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
38651674 | 1370 | } |
8be48d92 | 1371 | EXPORT_SYMBOL(drm_fb_helper_initial_config); |
38651674 | 1372 | |
eb1f8e4f | 1373 | bool drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper) |
38651674 | 1374 | { |
5c4426a7 | 1375 | int count = 0; |
4abe3520 | 1376 | u32 max_width, max_height, bpp_sel; |
4abe3520 DA |
1377 | bool bound = false, crtcs_bound = false; |
1378 | struct drm_crtc *crtc; | |
5c4426a7 | 1379 | |
eb1f8e4f DA |
1380 | if (!fb_helper->fb) |
1381 | return false; | |
4abe3520 | 1382 | |
4abe3520 DA |
1383 | list_for_each_entry(crtc, &fb_helper->dev->mode_config.crtc_list, head) { |
1384 | if (crtc->fb) | |
1385 | crtcs_bound = true; | |
1386 | if (crtc->fb == fb_helper->fb) | |
1387 | bound = true; | |
1388 | } | |
1389 | ||
eb1f8e4f | 1390 | if (!bound && crtcs_bound) { |
4abe3520 | 1391 | fb_helper->delayed_hotplug = true; |
eb1f8e4f | 1392 | return false; |
4abe3520 | 1393 | } |
eb1f8e4f | 1394 | DRM_DEBUG_KMS("\n"); |
4abe3520 | 1395 | |
eb1f8e4f DA |
1396 | max_width = fb_helper->fb->width; |
1397 | max_height = fb_helper->fb->height; | |
1398 | bpp_sel = fb_helper->fb->bits_per_pixel; | |
5c4426a7 | 1399 | |
eb1f8e4f DA |
1400 | count = drm_fb_helper_probe_connector_modes(fb_helper, max_width, |
1401 | max_height); | |
1402 | drm_setup_crtcs(fb_helper); | |
4abe3520 | 1403 | |
eb1f8e4f | 1404 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
5c4426a7 | 1405 | } |
eb1f8e4f | 1406 | EXPORT_SYMBOL(drm_fb_helper_hotplug_event); |
5c4426a7 | 1407 |