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 | 33 | #include <linux/fb.h> |
e0cd3608 | 34 | #include <linux/module.h> |
785b93ef DA |
35 | #include "drmP.h" |
36 | #include "drm_crtc.h" | |
37 | #include "drm_fb_helper.h" | |
38 | #include "drm_crtc_helper.h" | |
39 | ||
6fcefd56 DA |
40 | MODULE_AUTHOR("David Airlie, Jesse Barnes"); |
41 | MODULE_DESCRIPTION("DRM KMS helper"); | |
42 | MODULE_LICENSE("GPL and additional rights"); | |
43 | ||
785b93ef DA |
44 | static LIST_HEAD(kernel_fb_helper_list); |
45 | ||
0b4c0f3f DA |
46 | /* simple single crtc case helper function */ |
47 | int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper) | |
d50ba256 | 48 | { |
0b4c0f3f DA |
49 | struct drm_device *dev = fb_helper->dev; |
50 | struct drm_connector *connector; | |
51 | int i; | |
d50ba256 | 52 | |
0b4c0f3f DA |
53 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
54 | struct drm_fb_helper_connector *fb_helper_connector; | |
55 | ||
56 | fb_helper_connector = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL); | |
57 | if (!fb_helper_connector) | |
58 | goto fail; | |
d50ba256 | 59 | |
0b4c0f3f DA |
60 | fb_helper_connector->connector = connector; |
61 | fb_helper->connector_info[fb_helper->connector_count++] = fb_helper_connector; | |
62 | } | |
d50ba256 | 63 | return 0; |
0b4c0f3f DA |
64 | fail: |
65 | for (i = 0; i < fb_helper->connector_count; i++) { | |
66 | kfree(fb_helper->connector_info[i]); | |
67 | fb_helper->connector_info[i] = NULL; | |
68 | } | |
69 | fb_helper->connector_count = 0; | |
70 | return -ENOMEM; | |
d50ba256 | 71 | } |
0b4c0f3f | 72 | EXPORT_SYMBOL(drm_fb_helper_single_add_all_connectors); |
d50ba256 | 73 | |
0b4c0f3f | 74 | static int drm_fb_helper_parse_command_line(struct drm_fb_helper *fb_helper) |
d50ba256 | 75 | { |
0b4c0f3f DA |
76 | struct drm_fb_helper_connector *fb_helper_conn; |
77 | int i; | |
d50ba256 | 78 | |
0b4c0f3f | 79 | for (i = 0; i < fb_helper->connector_count; i++) { |
1794d257 CW |
80 | struct drm_cmdline_mode *mode; |
81 | struct drm_connector *connector; | |
d50ba256 DA |
82 | char *option = NULL; |
83 | ||
0b4c0f3f | 84 | fb_helper_conn = fb_helper->connector_info[i]; |
1794d257 CW |
85 | connector = fb_helper_conn->connector; |
86 | mode = &fb_helper_conn->cmdline_mode; | |
0b4c0f3f | 87 | |
d50ba256 | 88 | /* do something on return - turn off connector maybe */ |
1794d257 | 89 | if (fb_get_options(drm_get_connector_name(connector), &option)) |
d50ba256 DA |
90 | continue; |
91 | ||
1794d257 CW |
92 | if (drm_mode_parse_command_line_for_connector(option, |
93 | connector, | |
94 | mode)) { | |
95 | if (mode->force) { | |
96 | const char *s; | |
97 | switch (mode->force) { | |
98 | case DRM_FORCE_OFF: s = "OFF"; break; | |
99 | case DRM_FORCE_ON_DIGITAL: s = "ON - dig"; break; | |
100 | default: | |
101 | case DRM_FORCE_ON: s = "ON"; break; | |
102 | } | |
103 | ||
104 | DRM_INFO("forcing %s connector %s\n", | |
105 | drm_get_connector_name(connector), s); | |
106 | connector->force = mode->force; | |
107 | } | |
108 | ||
109 | DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n", | |
110 | drm_get_connector_name(connector), | |
111 | mode->xres, mode->yres, | |
112 | mode->refresh_specified ? mode->refresh : 60, | |
113 | mode->rb ? " reduced blanking" : "", | |
114 | mode->margins ? " with margins" : "", | |
115 | mode->interlace ? " interlaced" : ""); | |
116 | } | |
117 | ||
d50ba256 DA |
118 | } |
119 | return 0; | |
120 | } | |
121 | ||
99231028 JW |
122 | static void drm_fb_helper_save_lut_atomic(struct drm_crtc *crtc, struct drm_fb_helper *helper) |
123 | { | |
124 | uint16_t *r_base, *g_base, *b_base; | |
125 | int i; | |
126 | ||
127 | r_base = crtc->gamma_store; | |
128 | g_base = r_base + crtc->gamma_size; | |
129 | b_base = g_base + crtc->gamma_size; | |
130 | ||
131 | for (i = 0; i < crtc->gamma_size; i++) | |
132 | helper->funcs->gamma_get(crtc, &r_base[i], &g_base[i], &b_base[i], i); | |
133 | } | |
134 | ||
135 | static void drm_fb_helper_restore_lut_atomic(struct drm_crtc *crtc) | |
136 | { | |
137 | uint16_t *r_base, *g_base, *b_base; | |
138 | ||
139 | r_base = crtc->gamma_store; | |
140 | g_base = r_base + crtc->gamma_size; | |
141 | b_base = g_base + crtc->gamma_size; | |
142 | ||
143 | crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size); | |
144 | } | |
145 | ||
1a7aba7f JB |
146 | int drm_fb_helper_debug_enter(struct fb_info *info) |
147 | { | |
148 | struct drm_fb_helper *helper = info->par; | |
149 | struct drm_crtc_helper_funcs *funcs; | |
150 | int i; | |
151 | ||
152 | if (list_empty(&kernel_fb_helper_list)) | |
153 | return false; | |
154 | ||
155 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { | |
156 | for (i = 0; i < helper->crtc_count; i++) { | |
157 | struct drm_mode_set *mode_set = | |
158 | &helper->crtc_info[i].mode_set; | |
159 | ||
160 | if (!mode_set->crtc->enabled) | |
161 | continue; | |
162 | ||
163 | funcs = mode_set->crtc->helper_private; | |
99231028 | 164 | drm_fb_helper_save_lut_atomic(mode_set->crtc, helper); |
1a7aba7f JB |
165 | funcs->mode_set_base_atomic(mode_set->crtc, |
166 | mode_set->fb, | |
167 | mode_set->x, | |
413d45d3 | 168 | mode_set->y, |
21c74a8e | 169 | ENTER_ATOMIC_MODE_SET); |
1a7aba7f JB |
170 | } |
171 | } | |
172 | ||
173 | return 0; | |
174 | } | |
175 | EXPORT_SYMBOL(drm_fb_helper_debug_enter); | |
176 | ||
177 | /* Find the real fb for a given fb helper CRTC */ | |
178 | static struct drm_framebuffer *drm_mode_config_fb(struct drm_crtc *crtc) | |
179 | { | |
180 | struct drm_device *dev = crtc->dev; | |
181 | struct drm_crtc *c; | |
182 | ||
183 | list_for_each_entry(c, &dev->mode_config.crtc_list, head) { | |
184 | if (crtc->base.id == c->base.id) | |
185 | return c->fb; | |
186 | } | |
187 | ||
188 | return NULL; | |
189 | } | |
190 | ||
191 | int drm_fb_helper_debug_leave(struct fb_info *info) | |
192 | { | |
193 | struct drm_fb_helper *helper = info->par; | |
194 | struct drm_crtc *crtc; | |
195 | struct drm_crtc_helper_funcs *funcs; | |
196 | struct drm_framebuffer *fb; | |
197 | int i; | |
198 | ||
199 | for (i = 0; i < helper->crtc_count; i++) { | |
200 | struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set; | |
201 | crtc = mode_set->crtc; | |
202 | funcs = crtc->helper_private; | |
203 | fb = drm_mode_config_fb(crtc); | |
204 | ||
205 | if (!crtc->enabled) | |
206 | continue; | |
207 | ||
208 | if (!fb) { | |
209 | DRM_ERROR("no fb to restore??\n"); | |
210 | continue; | |
211 | } | |
212 | ||
99231028 | 213 | drm_fb_helper_restore_lut_atomic(mode_set->crtc); |
1a7aba7f | 214 | funcs->mode_set_base_atomic(mode_set->crtc, fb, crtc->x, |
21c74a8e | 215 | crtc->y, LEAVE_ATOMIC_MODE_SET); |
1a7aba7f JB |
216 | } |
217 | ||
218 | return 0; | |
219 | } | |
220 | EXPORT_SYMBOL(drm_fb_helper_debug_leave); | |
221 | ||
e8e7a2b8 DA |
222 | bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper) |
223 | { | |
224 | bool error = false; | |
225 | int i, ret; | |
226 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
227 | struct drm_mode_set *mode_set = &fb_helper->crtc_info[i].mode_set; | |
228 | ret = drm_crtc_helper_set_config(mode_set); | |
229 | if (ret) | |
230 | error = true; | |
231 | } | |
232 | return error; | |
233 | } | |
234 | EXPORT_SYMBOL(drm_fb_helper_restore_fbdev_mode); | |
235 | ||
785b93ef DA |
236 | bool drm_fb_helper_force_kernel_mode(void) |
237 | { | |
785b93ef DA |
238 | bool ret, error = false; |
239 | struct drm_fb_helper *helper; | |
240 | ||
241 | if (list_empty(&kernel_fb_helper_list)) | |
242 | return false; | |
243 | ||
244 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { | |
e8e7a2b8 DA |
245 | if (helper->dev->switch_power_state == DRM_SWITCH_POWER_OFF) |
246 | continue; | |
247 | ||
248 | ret = drm_fb_helper_restore_fbdev_mode(helper); | |
249 | if (ret) | |
250 | error = true; | |
785b93ef DA |
251 | } |
252 | return error; | |
253 | } | |
254 | ||
255 | int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed, | |
256 | void *panic_str) | |
257 | { | |
d68752cf HD |
258 | /* |
259 | * It's a waste of time and effort to switch back to text console | |
260 | * if the kernel should reboot before panic messages can be seen. | |
261 | */ | |
262 | if (panic_timeout < 0) | |
263 | return 0; | |
264 | ||
fc2362af | 265 | printk(KERN_ERR "panic occurred, switching back to text console\n"); |
785b93ef | 266 | return drm_fb_helper_force_kernel_mode(); |
785b93ef DA |
267 | } |
268 | EXPORT_SYMBOL(drm_fb_helper_panic); | |
269 | ||
270 | static struct notifier_block paniced = { | |
271 | .notifier_call = drm_fb_helper_panic, | |
272 | }; | |
273 | ||
274 | /** | |
275 | * drm_fb_helper_restore - restore the framebuffer console (kernel) config | |
276 | * | |
277 | * Restore's the kernel's fbcon mode, used for lastclose & panic paths. | |
278 | */ | |
279 | void drm_fb_helper_restore(void) | |
280 | { | |
281 | bool ret; | |
282 | ret = drm_fb_helper_force_kernel_mode(); | |
283 | if (ret == true) | |
284 | DRM_ERROR("Failed to restore crtc configuration\n"); | |
285 | } | |
286 | EXPORT_SYMBOL(drm_fb_helper_restore); | |
287 | ||
bea1d35b | 288 | #ifdef CONFIG_MAGIC_SYSRQ |
785b93ef DA |
289 | static void drm_fb_helper_restore_work_fn(struct work_struct *ignored) |
290 | { | |
291 | drm_fb_helper_restore(); | |
292 | } | |
293 | static DECLARE_WORK(drm_fb_helper_restore_work, drm_fb_helper_restore_work_fn); | |
294 | ||
1495cc9d | 295 | static void drm_fb_helper_sysrq(int dummy1) |
785b93ef DA |
296 | { |
297 | schedule_work(&drm_fb_helper_restore_work); | |
298 | } | |
299 | ||
300 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { | |
301 | .handler = drm_fb_helper_sysrq, | |
302 | .help_msg = "force-fb(V)", | |
303 | .action_msg = "Restore framebuffer console", | |
304 | }; | |
b8c40d62 RD |
305 | #else |
306 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { }; | |
bea1d35b | 307 | #endif |
785b93ef DA |
308 | |
309 | static void drm_fb_helper_on(struct fb_info *info) | |
310 | { | |
311 | struct drm_fb_helper *fb_helper = info->par; | |
312 | struct drm_device *dev = fb_helper->dev; | |
313 | struct drm_crtc *crtc; | |
8be48d92 | 314 | struct drm_crtc_helper_funcs *crtc_funcs; |
023eb571 | 315 | struct drm_connector *connector; |
785b93ef | 316 | struct drm_encoder *encoder; |
023eb571 | 317 | int i, j; |
785b93ef DA |
318 | |
319 | /* | |
320 | * For each CRTC in this fb, turn the crtc on then, | |
321 | * find all associated encoders and turn them on. | |
322 | */ | |
8be48d92 | 323 | mutex_lock(&dev->mode_config.mutex); |
e87b2c42 | 324 | for (i = 0; i < fb_helper->crtc_count; i++) { |
8be48d92 DA |
325 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
326 | crtc_funcs = crtc->helper_private; | |
785b93ef | 327 | |
8be48d92 DA |
328 | if (!crtc->enabled) |
329 | continue; | |
330 | ||
331 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); | |
785b93ef | 332 | |
023eb571 JB |
333 | /* Walk the connectors & encoders on this fb turning them on */ |
334 | for (j = 0; j < fb_helper->connector_count; j++) { | |
335 | connector = fb_helper->connector_info[j]->connector; | |
336 | connector->dpms = DRM_MODE_DPMS_ON; | |
337 | drm_connector_property_set_value(connector, | |
338 | dev->mode_config.dpms_property, | |
339 | DRM_MODE_DPMS_ON); | |
340 | } | |
8be48d92 DA |
341 | /* Found a CRTC on this fb, now find encoders */ |
342 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
343 | if (encoder->crtc == crtc) { | |
344 | struct drm_encoder_helper_funcs *encoder_funcs; | |
785b93ef | 345 | |
8be48d92 DA |
346 | encoder_funcs = encoder->helper_private; |
347 | encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); | |
785b93ef DA |
348 | } |
349 | } | |
350 | } | |
8be48d92 | 351 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
352 | } |
353 | ||
354 | static void drm_fb_helper_off(struct fb_info *info, int dpms_mode) | |
355 | { | |
356 | struct drm_fb_helper *fb_helper = info->par; | |
357 | struct drm_device *dev = fb_helper->dev; | |
358 | struct drm_crtc *crtc; | |
8be48d92 | 359 | struct drm_crtc_helper_funcs *crtc_funcs; |
023eb571 | 360 | struct drm_connector *connector; |
785b93ef | 361 | struct drm_encoder *encoder; |
023eb571 | 362 | int i, j; |
785b93ef DA |
363 | |
364 | /* | |
365 | * For each CRTC in this fb, find all associated encoders | |
366 | * and turn them off, then turn off the CRTC. | |
367 | */ | |
8be48d92 | 368 | mutex_lock(&dev->mode_config.mutex); |
e87b2c42 | 369 | for (i = 0; i < fb_helper->crtc_count; i++) { |
8be48d92 DA |
370 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
371 | crtc_funcs = crtc->helper_private; | |
e87b2c42 | 372 | |
8be48d92 DA |
373 | if (!crtc->enabled) |
374 | continue; | |
e87b2c42 | 375 | |
023eb571 JB |
376 | /* Walk the connectors on this fb and mark them off */ |
377 | for (j = 0; j < fb_helper->connector_count; j++) { | |
378 | connector = fb_helper->connector_info[j]->connector; | |
379 | connector->dpms = dpms_mode; | |
380 | drm_connector_property_set_value(connector, | |
381 | dev->mode_config.dpms_property, | |
382 | dpms_mode); | |
383 | } | |
8be48d92 DA |
384 | /* Found a CRTC on this fb, now find encoders */ |
385 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
386 | if (encoder->crtc == crtc) { | |
387 | struct drm_encoder_helper_funcs *encoder_funcs; | |
e87b2c42 | 388 | |
8be48d92 DA |
389 | encoder_funcs = encoder->helper_private; |
390 | encoder_funcs->dpms(encoder, dpms_mode); | |
e87b2c42 | 391 | } |
785b93ef | 392 | } |
8be48d92 | 393 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF); |
785b93ef | 394 | } |
8be48d92 | 395 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
396 | } |
397 | ||
398 | int drm_fb_helper_blank(int blank, struct fb_info *info) | |
399 | { | |
400 | switch (blank) { | |
731b5a15 | 401 | /* Display: On; HSync: On, VSync: On */ |
785b93ef DA |
402 | case FB_BLANK_UNBLANK: |
403 | drm_fb_helper_on(info); | |
404 | break; | |
731b5a15 | 405 | /* Display: Off; HSync: On, VSync: On */ |
785b93ef | 406 | case FB_BLANK_NORMAL: |
5fd4df4d | 407 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); |
785b93ef | 408 | break; |
731b5a15 | 409 | /* Display: Off; HSync: Off, VSync: On */ |
785b93ef DA |
410 | case FB_BLANK_HSYNC_SUSPEND: |
411 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); | |
412 | break; | |
731b5a15 | 413 | /* Display: Off; HSync: On, VSync: Off */ |
785b93ef DA |
414 | case FB_BLANK_VSYNC_SUSPEND: |
415 | drm_fb_helper_off(info, DRM_MODE_DPMS_SUSPEND); | |
416 | break; | |
731b5a15 | 417 | /* Display: Off; HSync: Off, VSync: Off */ |
785b93ef DA |
418 | case FB_BLANK_POWERDOWN: |
419 | drm_fb_helper_off(info, DRM_MODE_DPMS_OFF); | |
420 | break; | |
421 | } | |
422 | return 0; | |
423 | } | |
424 | EXPORT_SYMBOL(drm_fb_helper_blank); | |
425 | ||
426 | static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) | |
427 | { | |
428 | int i; | |
429 | ||
0b4c0f3f DA |
430 | for (i = 0; i < helper->connector_count; i++) |
431 | kfree(helper->connector_info[i]); | |
432 | kfree(helper->connector_info); | |
785b93ef DA |
433 | for (i = 0; i < helper->crtc_count; i++) |
434 | kfree(helper->crtc_info[i].mode_set.connectors); | |
435 | kfree(helper->crtc_info); | |
436 | } | |
437 | ||
4abe3520 DA |
438 | int drm_fb_helper_init(struct drm_device *dev, |
439 | struct drm_fb_helper *fb_helper, | |
eb1f8e4f | 440 | int crtc_count, int max_conn_count) |
785b93ef | 441 | { |
785b93ef DA |
442 | struct drm_crtc *crtc; |
443 | int ret = 0; | |
444 | int i; | |
445 | ||
4abe3520 | 446 | fb_helper->dev = dev; |
4abe3520 DA |
447 | |
448 | INIT_LIST_HEAD(&fb_helper->kernel_fb_list); | |
449 | ||
450 | fb_helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL); | |
451 | if (!fb_helper->crtc_info) | |
785b93ef DA |
452 | return -ENOMEM; |
453 | ||
4abe3520 DA |
454 | fb_helper->crtc_count = crtc_count; |
455 | fb_helper->connector_info = kcalloc(dev->mode_config.num_connector, sizeof(struct drm_fb_helper_connector *), GFP_KERNEL); | |
456 | if (!fb_helper->connector_info) { | |
457 | kfree(fb_helper->crtc_info); | |
0b4c0f3f DA |
458 | return -ENOMEM; |
459 | } | |
4abe3520 | 460 | fb_helper->connector_count = 0; |
785b93ef DA |
461 | |
462 | for (i = 0; i < crtc_count; i++) { | |
4abe3520 | 463 | fb_helper->crtc_info[i].mode_set.connectors = |
785b93ef DA |
464 | kcalloc(max_conn_count, |
465 | sizeof(struct drm_connector *), | |
466 | GFP_KERNEL); | |
467 | ||
4abe3520 | 468 | if (!fb_helper->crtc_info[i].mode_set.connectors) { |
785b93ef DA |
469 | ret = -ENOMEM; |
470 | goto out_free; | |
471 | } | |
4abe3520 | 472 | fb_helper->crtc_info[i].mode_set.num_connectors = 0; |
785b93ef DA |
473 | } |
474 | ||
475 | i = 0; | |
476 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
4abe3520 DA |
477 | fb_helper->crtc_info[i].crtc_id = crtc->base.id; |
478 | fb_helper->crtc_info[i].mode_set.crtc = crtc; | |
785b93ef DA |
479 | i++; |
480 | } | |
4abe3520 | 481 | fb_helper->conn_limit = max_conn_count; |
785b93ef DA |
482 | return 0; |
483 | out_free: | |
4abe3520 | 484 | drm_fb_helper_crtc_free(fb_helper); |
785b93ef DA |
485 | return -ENOMEM; |
486 | } | |
4abe3520 DA |
487 | EXPORT_SYMBOL(drm_fb_helper_init); |
488 | ||
489 | void drm_fb_helper_fini(struct drm_fb_helper *fb_helper) | |
490 | { | |
491 | if (!list_empty(&fb_helper->kernel_fb_list)) { | |
492 | list_del(&fb_helper->kernel_fb_list); | |
493 | if (list_empty(&kernel_fb_helper_list)) { | |
3da1f33e | 494 | printk(KERN_INFO "drm: unregistered panic notifier\n"); |
4abe3520 DA |
495 | atomic_notifier_chain_unregister(&panic_notifier_list, |
496 | &paniced); | |
497 | unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
498 | } | |
499 | } | |
500 | ||
501 | drm_fb_helper_crtc_free(fb_helper); | |
502 | ||
4abe3520 DA |
503 | } |
504 | EXPORT_SYMBOL(drm_fb_helper_fini); | |
785b93ef | 505 | |
c850cb78 | 506 | static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, |
b8c00ac5 DA |
507 | u16 blue, u16 regno, struct fb_info *info) |
508 | { | |
509 | struct drm_fb_helper *fb_helper = info->par; | |
510 | struct drm_framebuffer *fb = fb_helper->fb; | |
511 | int pindex; | |
512 | ||
c850cb78 DA |
513 | if (info->fix.visual == FB_VISUAL_TRUECOLOR) { |
514 | u32 *palette; | |
515 | u32 value; | |
516 | /* place color in psuedopalette */ | |
517 | if (regno > 16) | |
518 | return -EINVAL; | |
519 | palette = (u32 *)info->pseudo_palette; | |
520 | red >>= (16 - info->var.red.length); | |
521 | green >>= (16 - info->var.green.length); | |
522 | blue >>= (16 - info->var.blue.length); | |
523 | value = (red << info->var.red.offset) | | |
524 | (green << info->var.green.offset) | | |
525 | (blue << info->var.blue.offset); | |
9da12b6a RC |
526 | if (info->var.transp.length > 0) { |
527 | u32 mask = (1 << info->var.transp.length) - 1; | |
528 | mask <<= info->var.transp.offset; | |
529 | value |= mask; | |
530 | } | |
c850cb78 DA |
531 | palette[regno] = value; |
532 | return 0; | |
533 | } | |
534 | ||
b8c00ac5 DA |
535 | pindex = regno; |
536 | ||
537 | if (fb->bits_per_pixel == 16) { | |
538 | pindex = regno << 3; | |
539 | ||
540 | if (fb->depth == 16 && regno > 63) | |
c850cb78 | 541 | return -EINVAL; |
b8c00ac5 | 542 | if (fb->depth == 15 && regno > 31) |
c850cb78 | 543 | return -EINVAL; |
b8c00ac5 DA |
544 | |
545 | if (fb->depth == 16) { | |
546 | u16 r, g, b; | |
547 | int i; | |
548 | if (regno < 32) { | |
549 | for (i = 0; i < 8; i++) | |
550 | fb_helper->funcs->gamma_set(crtc, red, | |
551 | green, blue, pindex + i); | |
552 | } | |
553 | ||
554 | fb_helper->funcs->gamma_get(crtc, &r, | |
555 | &g, &b, | |
556 | pindex >> 1); | |
557 | ||
558 | for (i = 0; i < 4; i++) | |
559 | fb_helper->funcs->gamma_set(crtc, r, | |
560 | green, b, | |
561 | (pindex >> 1) + i); | |
562 | } | |
563 | } | |
564 | ||
565 | if (fb->depth != 16) | |
566 | fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex); | |
c850cb78 | 567 | return 0; |
b8c00ac5 DA |
568 | } |
569 | ||
068143d3 DA |
570 | int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) |
571 | { | |
572 | struct drm_fb_helper *fb_helper = info->par; | |
8be48d92 | 573 | struct drm_crtc_helper_funcs *crtc_funcs; |
068143d3 DA |
574 | u16 *red, *green, *blue, *transp; |
575 | struct drm_crtc *crtc; | |
062ac622 | 576 | int i, j, rc = 0; |
068143d3 DA |
577 | int start; |
578 | ||
8be48d92 DA |
579 | for (i = 0; i < fb_helper->crtc_count; i++) { |
580 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
581 | crtc_funcs = crtc->helper_private; | |
068143d3 DA |
582 | |
583 | red = cmap->red; | |
584 | green = cmap->green; | |
585 | blue = cmap->blue; | |
586 | transp = cmap->transp; | |
587 | start = cmap->start; | |
588 | ||
062ac622 | 589 | for (j = 0; j < cmap->len; j++) { |
068143d3 DA |
590 | u16 hred, hgreen, hblue, htransp = 0xffff; |
591 | ||
592 | hred = *red++; | |
593 | hgreen = *green++; | |
594 | hblue = *blue++; | |
595 | ||
596 | if (transp) | |
597 | htransp = *transp++; | |
598 | ||
c850cb78 DA |
599 | rc = setcolreg(crtc, hred, hgreen, hblue, start++, info); |
600 | if (rc) | |
601 | return rc; | |
068143d3 DA |
602 | } |
603 | crtc_funcs->load_lut(crtc); | |
604 | } | |
605 | return rc; | |
606 | } | |
607 | EXPORT_SYMBOL(drm_fb_helper_setcmap); | |
608 | ||
785b93ef DA |
609 | int drm_fb_helper_check_var(struct fb_var_screeninfo *var, |
610 | struct fb_info *info) | |
611 | { | |
612 | struct drm_fb_helper *fb_helper = info->par; | |
613 | struct drm_framebuffer *fb = fb_helper->fb; | |
614 | int depth; | |
615 | ||
f90ebd9e | 616 | if (var->pixclock != 0 || in_dbg_master()) |
785b93ef DA |
617 | return -EINVAL; |
618 | ||
619 | /* Need to resize the fb object !!! */ | |
509c7d83 DA |
620 | if (var->bits_per_pixel > fb->bits_per_pixel || var->xres > fb->width || var->yres > fb->height) { |
621 | DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb " | |
622 | "object %dx%d-%d > %dx%d-%d\n", var->xres, var->yres, var->bits_per_pixel, | |
623 | fb->width, fb->height, fb->bits_per_pixel); | |
785b93ef DA |
624 | return -EINVAL; |
625 | } | |
626 | ||
627 | switch (var->bits_per_pixel) { | |
628 | case 16: | |
629 | depth = (var->green.length == 6) ? 16 : 15; | |
630 | break; | |
631 | case 32: | |
632 | depth = (var->transp.length > 0) ? 32 : 24; | |
633 | break; | |
634 | default: | |
635 | depth = var->bits_per_pixel; | |
636 | break; | |
637 | } | |
638 | ||
639 | switch (depth) { | |
640 | case 8: | |
641 | var->red.offset = 0; | |
642 | var->green.offset = 0; | |
643 | var->blue.offset = 0; | |
644 | var->red.length = 8; | |
645 | var->green.length = 8; | |
646 | var->blue.length = 8; | |
647 | var->transp.length = 0; | |
648 | var->transp.offset = 0; | |
649 | break; | |
650 | case 15: | |
651 | var->red.offset = 10; | |
652 | var->green.offset = 5; | |
653 | var->blue.offset = 0; | |
654 | var->red.length = 5; | |
655 | var->green.length = 5; | |
656 | var->blue.length = 5; | |
657 | var->transp.length = 1; | |
658 | var->transp.offset = 15; | |
659 | break; | |
660 | case 16: | |
661 | var->red.offset = 11; | |
662 | var->green.offset = 5; | |
663 | var->blue.offset = 0; | |
664 | var->red.length = 5; | |
665 | var->green.length = 6; | |
666 | var->blue.length = 5; | |
667 | var->transp.length = 0; | |
668 | var->transp.offset = 0; | |
669 | break; | |
670 | case 24: | |
671 | var->red.offset = 16; | |
672 | var->green.offset = 8; | |
673 | var->blue.offset = 0; | |
674 | var->red.length = 8; | |
675 | var->green.length = 8; | |
676 | var->blue.length = 8; | |
677 | var->transp.length = 0; | |
678 | var->transp.offset = 0; | |
679 | break; | |
680 | case 32: | |
681 | var->red.offset = 16; | |
682 | var->green.offset = 8; | |
683 | var->blue.offset = 0; | |
684 | var->red.length = 8; | |
685 | var->green.length = 8; | |
686 | var->blue.length = 8; | |
687 | var->transp.length = 8; | |
688 | var->transp.offset = 24; | |
689 | break; | |
690 | default: | |
691 | return -EINVAL; | |
692 | } | |
693 | return 0; | |
694 | } | |
695 | EXPORT_SYMBOL(drm_fb_helper_check_var); | |
696 | ||
697 | /* this will let fbcon do the mode init */ | |
698 | int drm_fb_helper_set_par(struct fb_info *info) | |
699 | { | |
700 | struct drm_fb_helper *fb_helper = info->par; | |
701 | struct drm_device *dev = fb_helper->dev; | |
702 | struct fb_var_screeninfo *var = &info->var; | |
703 | struct drm_crtc *crtc; | |
704 | int ret; | |
705 | int i; | |
706 | ||
5349ef31 | 707 | if (var->pixclock != 0) { |
172e91f5 | 708 | DRM_ERROR("PIXEL CLOCK SET\n"); |
785b93ef DA |
709 | return -EINVAL; |
710 | } | |
711 | ||
8be48d92 DA |
712 | mutex_lock(&dev->mode_config.mutex); |
713 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
714 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
0b4c0f3f DA |
715 | ret = crtc->funcs->set_config(&fb_helper->crtc_info[i].mode_set); |
716 | if (ret) { | |
785b93ef | 717 | mutex_unlock(&dev->mode_config.mutex); |
0b4c0f3f | 718 | return ret; |
785b93ef DA |
719 | } |
720 | } | |
8be48d92 | 721 | mutex_unlock(&dev->mode_config.mutex); |
4abe3520 DA |
722 | |
723 | if (fb_helper->delayed_hotplug) { | |
724 | fb_helper->delayed_hotplug = false; | |
eb1f8e4f | 725 | drm_fb_helper_hotplug_event(fb_helper); |
4abe3520 | 726 | } |
785b93ef DA |
727 | return 0; |
728 | } | |
729 | EXPORT_SYMBOL(drm_fb_helper_set_par); | |
730 | ||
731 | int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, | |
732 | struct fb_info *info) | |
733 | { | |
734 | struct drm_fb_helper *fb_helper = info->par; | |
735 | struct drm_device *dev = fb_helper->dev; | |
736 | struct drm_mode_set *modeset; | |
737 | struct drm_crtc *crtc; | |
738 | int ret = 0; | |
739 | int i; | |
740 | ||
8be48d92 DA |
741 | mutex_lock(&dev->mode_config.mutex); |
742 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
743 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
785b93ef DA |
744 | |
745 | modeset = &fb_helper->crtc_info[i].mode_set; | |
746 | ||
747 | modeset->x = var->xoffset; | |
748 | modeset->y = var->yoffset; | |
749 | ||
750 | if (modeset->num_connectors) { | |
785b93ef | 751 | ret = crtc->funcs->set_config(modeset); |
785b93ef DA |
752 | if (!ret) { |
753 | info->var.xoffset = var->xoffset; | |
754 | info->var.yoffset = var->yoffset; | |
755 | } | |
756 | } | |
757 | } | |
8be48d92 | 758 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
759 | return ret; |
760 | } | |
761 | EXPORT_SYMBOL(drm_fb_helper_pan_display); | |
762 | ||
8be48d92 DA |
763 | int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, |
764 | int preferred_bpp) | |
785b93ef | 765 | { |
785b93ef DA |
766 | int new_fb = 0; |
767 | int crtc_count = 0; | |
4abe3520 | 768 | int i; |
785b93ef | 769 | struct fb_info *info; |
38651674 | 770 | struct drm_fb_helper_surface_size sizes; |
8be48d92 | 771 | int gamma_size = 0; |
38651674 DA |
772 | |
773 | memset(&sizes, 0, sizeof(struct drm_fb_helper_surface_size)); | |
774 | sizes.surface_depth = 24; | |
775 | sizes.surface_bpp = 32; | |
776 | sizes.fb_width = (unsigned)-1; | |
777 | sizes.fb_height = (unsigned)-1; | |
785b93ef | 778 | |
b8c00ac5 DA |
779 | /* if driver picks 8 or 16 by default use that |
780 | for both depth/bpp */ | |
38651674 DA |
781 | if (preferred_bpp != sizes.surface_bpp) { |
782 | sizes.surface_depth = sizes.surface_bpp = preferred_bpp; | |
b8c00ac5 | 783 | } |
785b93ef | 784 | /* first up get a count of crtcs now in use and new min/maxes width/heights */ |
0b4c0f3f DA |
785 | for (i = 0; i < fb_helper->connector_count; i++) { |
786 | struct drm_fb_helper_connector *fb_helper_conn = fb_helper->connector_info[i]; | |
1794d257 | 787 | struct drm_cmdline_mode *cmdline_mode; |
8ef8678c | 788 | |
0b4c0f3f | 789 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
d50ba256 DA |
790 | |
791 | if (cmdline_mode->bpp_specified) { | |
792 | switch (cmdline_mode->bpp) { | |
793 | case 8: | |
38651674 | 794 | sizes.surface_depth = sizes.surface_bpp = 8; |
d50ba256 DA |
795 | break; |
796 | case 15: | |
38651674 DA |
797 | sizes.surface_depth = 15; |
798 | sizes.surface_bpp = 16; | |
d50ba256 DA |
799 | break; |
800 | case 16: | |
38651674 | 801 | sizes.surface_depth = sizes.surface_bpp = 16; |
d50ba256 DA |
802 | break; |
803 | case 24: | |
38651674 | 804 | sizes.surface_depth = sizes.surface_bpp = 24; |
d50ba256 DA |
805 | break; |
806 | case 32: | |
38651674 DA |
807 | sizes.surface_depth = 24; |
808 | sizes.surface_bpp = 32; | |
d50ba256 DA |
809 | break; |
810 | } | |
811 | break; | |
812 | } | |
813 | } | |
814 | ||
8be48d92 DA |
815 | crtc_count = 0; |
816 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
817 | struct drm_display_mode *desired_mode; | |
818 | desired_mode = fb_helper->crtc_info[i].desired_mode; | |
819 | ||
820 | if (desired_mode) { | |
821 | if (gamma_size == 0) | |
822 | gamma_size = fb_helper->crtc_info[i].mode_set.crtc->gamma_size; | |
823 | if (desired_mode->hdisplay < sizes.fb_width) | |
824 | sizes.fb_width = desired_mode->hdisplay; | |
825 | if (desired_mode->vdisplay < sizes.fb_height) | |
826 | sizes.fb_height = desired_mode->vdisplay; | |
827 | if (desired_mode->hdisplay > sizes.surface_width) | |
828 | sizes.surface_width = desired_mode->hdisplay; | |
829 | if (desired_mode->vdisplay > sizes.surface_height) | |
830 | sizes.surface_height = desired_mode->vdisplay; | |
785b93ef DA |
831 | crtc_count++; |
832 | } | |
833 | } | |
834 | ||
38651674 | 835 | if (crtc_count == 0 || sizes.fb_width == -1 || sizes.fb_height == -1) { |
785b93ef DA |
836 | /* hmm everyone went away - assume VGA cable just fell out |
837 | and will come back later. */ | |
eb1f8e4f | 838 | DRM_INFO("Cannot find any crtc or sizes - going 1024x768\n"); |
19b4b445 DA |
839 | sizes.fb_width = sizes.surface_width = 1024; |
840 | sizes.fb_height = sizes.surface_height = 768; | |
785b93ef DA |
841 | } |
842 | ||
38651674 | 843 | /* push down into drivers */ |
4abe3520 | 844 | new_fb = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes); |
38651674 DA |
845 | if (new_fb < 0) |
846 | return new_fb; | |
785b93ef | 847 | |
38651674 | 848 | info = fb_helper->fbdev; |
785b93ef | 849 | |
8be48d92 DA |
850 | /* set the fb pointer */ |
851 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
852 | fb_helper->crtc_info[i].mode_set.fb = fb_helper->fb; | |
785b93ef | 853 | } |
785b93ef DA |
854 | |
855 | if (new_fb) { | |
5349ef31 | 856 | info->var.pixclock = 0; |
3bea21b6 | 857 | if (register_framebuffer(info) < 0) { |
785b93ef | 858 | return -EINVAL; |
3bea21b6 | 859 | } |
38651674 DA |
860 | |
861 | printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, | |
862 | info->fix.id); | |
863 | ||
785b93ef DA |
864 | } else { |
865 | drm_fb_helper_set_par(info); | |
866 | } | |
785b93ef DA |
867 | |
868 | /* Switch back to kernel console on panic */ | |
869 | /* multi card linked list maybe */ | |
870 | if (list_empty(&kernel_fb_helper_list)) { | |
3da1f33e | 871 | printk(KERN_INFO "drm: registered panic notifier\n"); |
785b93ef DA |
872 | atomic_notifier_chain_register(&panic_notifier_list, |
873 | &paniced); | |
874 | register_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
875 | } | |
38651674 DA |
876 | if (new_fb) |
877 | list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list); | |
878 | ||
785b93ef DA |
879 | return 0; |
880 | } | |
881 | EXPORT_SYMBOL(drm_fb_helper_single_fb_probe); | |
882 | ||
3632ef89 DA |
883 | void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, |
884 | uint32_t depth) | |
885 | { | |
886 | info->fix.type = FB_TYPE_PACKED_PIXELS; | |
887 | info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR : | |
888 | FB_VISUAL_TRUECOLOR; | |
889 | info->fix.mmio_start = 0; | |
890 | info->fix.mmio_len = 0; | |
891 | info->fix.type_aux = 0; | |
892 | info->fix.xpanstep = 1; /* doing it in hw */ | |
893 | info->fix.ypanstep = 1; /* doing it in hw */ | |
894 | info->fix.ywrapstep = 0; | |
895 | info->fix.accel = FB_ACCEL_NONE; | |
896 | info->fix.type_aux = 0; | |
897 | ||
898 | info->fix.line_length = pitch; | |
899 | return; | |
900 | } | |
901 | EXPORT_SYMBOL(drm_fb_helper_fill_fix); | |
902 | ||
38651674 | 903 | void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, |
785b93ef DA |
904 | uint32_t fb_width, uint32_t fb_height) |
905 | { | |
38651674 DA |
906 | struct drm_framebuffer *fb = fb_helper->fb; |
907 | info->pseudo_palette = fb_helper->pseudo_palette; | |
785b93ef DA |
908 | info->var.xres_virtual = fb->width; |
909 | info->var.yres_virtual = fb->height; | |
910 | info->var.bits_per_pixel = fb->bits_per_pixel; | |
57084d05 | 911 | info->var.accel_flags = FB_ACCELF_TEXT; |
785b93ef DA |
912 | info->var.xoffset = 0; |
913 | info->var.yoffset = 0; | |
914 | info->var.activate = FB_ACTIVATE_NOW; | |
915 | info->var.height = -1; | |
916 | info->var.width = -1; | |
917 | ||
918 | switch (fb->depth) { | |
919 | case 8: | |
920 | info->var.red.offset = 0; | |
921 | info->var.green.offset = 0; | |
922 | info->var.blue.offset = 0; | |
923 | info->var.red.length = 8; /* 8bit DAC */ | |
924 | info->var.green.length = 8; | |
925 | info->var.blue.length = 8; | |
926 | info->var.transp.offset = 0; | |
927 | info->var.transp.length = 0; | |
928 | break; | |
929 | case 15: | |
930 | info->var.red.offset = 10; | |
931 | info->var.green.offset = 5; | |
932 | info->var.blue.offset = 0; | |
933 | info->var.red.length = 5; | |
934 | info->var.green.length = 5; | |
935 | info->var.blue.length = 5; | |
936 | info->var.transp.offset = 15; | |
937 | info->var.transp.length = 1; | |
938 | break; | |
939 | case 16: | |
940 | info->var.red.offset = 11; | |
941 | info->var.green.offset = 5; | |
942 | info->var.blue.offset = 0; | |
943 | info->var.red.length = 5; | |
944 | info->var.green.length = 6; | |
945 | info->var.blue.length = 5; | |
946 | info->var.transp.offset = 0; | |
947 | break; | |
948 | case 24: | |
949 | info->var.red.offset = 16; | |
950 | info->var.green.offset = 8; | |
951 | info->var.blue.offset = 0; | |
952 | info->var.red.length = 8; | |
953 | info->var.green.length = 8; | |
954 | info->var.blue.length = 8; | |
955 | info->var.transp.offset = 0; | |
956 | info->var.transp.length = 0; | |
957 | break; | |
958 | case 32: | |
959 | info->var.red.offset = 16; | |
960 | info->var.green.offset = 8; | |
961 | info->var.blue.offset = 0; | |
962 | info->var.red.length = 8; | |
963 | info->var.green.length = 8; | |
964 | info->var.blue.length = 8; | |
965 | info->var.transp.offset = 24; | |
966 | info->var.transp.length = 8; | |
967 | break; | |
968 | default: | |
969 | break; | |
970 | } | |
971 | ||
972 | info->var.xres = fb_width; | |
973 | info->var.yres = fb_height; | |
974 | } | |
975 | EXPORT_SYMBOL(drm_fb_helper_fill_var); | |
38651674 | 976 | |
0b4c0f3f DA |
977 | static int drm_fb_helper_probe_connector_modes(struct drm_fb_helper *fb_helper, |
978 | uint32_t maxX, | |
979 | uint32_t maxY) | |
38651674 DA |
980 | { |
981 | struct drm_connector *connector; | |
982 | int count = 0; | |
0b4c0f3f | 983 | int i; |
38651674 | 984 | |
0b4c0f3f DA |
985 | for (i = 0; i < fb_helper->connector_count; i++) { |
986 | connector = fb_helper->connector_info[i]->connector; | |
38651674 DA |
987 | count += connector->funcs->fill_modes(connector, maxX, maxY); |
988 | } | |
989 | ||
990 | return count; | |
991 | } | |
992 | ||
0b4c0f3f | 993 | static struct drm_display_mode *drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, int width, int height) |
38651674 DA |
994 | { |
995 | struct drm_display_mode *mode; | |
996 | ||
0b4c0f3f | 997 | list_for_each_entry(mode, &fb_connector->connector->modes, head) { |
38651674 DA |
998 | if (drm_mode_width(mode) > width || |
999 | drm_mode_height(mode) > height) | |
1000 | continue; | |
1001 | if (mode->type & DRM_MODE_TYPE_PREFERRED) | |
1002 | return mode; | |
1003 | } | |
1004 | return NULL; | |
1005 | } | |
1006 | ||
0b4c0f3f | 1007 | static bool drm_has_cmdline_mode(struct drm_fb_helper_connector *fb_connector) |
38651674 | 1008 | { |
1794d257 | 1009 | struct drm_cmdline_mode *cmdline_mode; |
0b4c0f3f | 1010 | cmdline_mode = &fb_connector->cmdline_mode; |
38651674 DA |
1011 | return cmdline_mode->specified; |
1012 | } | |
1013 | ||
0b4c0f3f DA |
1014 | static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn, |
1015 | int width, int height) | |
38651674 | 1016 | { |
1794d257 | 1017 | struct drm_cmdline_mode *cmdline_mode; |
38651674 DA |
1018 | struct drm_display_mode *mode = NULL; |
1019 | ||
0b4c0f3f | 1020 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
38651674 DA |
1021 | if (cmdline_mode->specified == false) |
1022 | return mode; | |
1023 | ||
1024 | /* attempt to find a matching mode in the list of modes | |
1025 | * we have gotten so far, if not add a CVT mode that conforms | |
1026 | */ | |
1027 | if (cmdline_mode->rb || cmdline_mode->margins) | |
1028 | goto create_mode; | |
1029 | ||
0b4c0f3f | 1030 | list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { |
38651674 DA |
1031 | /* check width/height */ |
1032 | if (mode->hdisplay != cmdline_mode->xres || | |
1033 | mode->vdisplay != cmdline_mode->yres) | |
1034 | continue; | |
1035 | ||
1036 | if (cmdline_mode->refresh_specified) { | |
1037 | if (mode->vrefresh != cmdline_mode->refresh) | |
1038 | continue; | |
1039 | } | |
1040 | ||
1041 | if (cmdline_mode->interlace) { | |
1042 | if (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) | |
1043 | continue; | |
1044 | } | |
1045 | return mode; | |
1046 | } | |
1047 | ||
1048 | create_mode: | |
1794d257 CW |
1049 | mode = drm_mode_create_from_cmdline_mode(fb_helper_conn->connector->dev, |
1050 | cmdline_mode); | |
0b4c0f3f | 1051 | list_add(&mode->head, &fb_helper_conn->connector->modes); |
38651674 DA |
1052 | return mode; |
1053 | } | |
1054 | ||
1055 | static bool drm_connector_enabled(struct drm_connector *connector, bool strict) | |
1056 | { | |
1057 | bool enable; | |
1058 | ||
1059 | if (strict) { | |
1060 | enable = connector->status == connector_status_connected; | |
1061 | } else { | |
1062 | enable = connector->status != connector_status_disconnected; | |
1063 | } | |
1064 | return enable; | |
1065 | } | |
1066 | ||
0b4c0f3f DA |
1067 | static void drm_enable_connectors(struct drm_fb_helper *fb_helper, |
1068 | bool *enabled) | |
38651674 DA |
1069 | { |
1070 | bool any_enabled = false; | |
1071 | struct drm_connector *connector; | |
1072 | int i = 0; | |
1073 | ||
0b4c0f3f DA |
1074 | for (i = 0; i < fb_helper->connector_count; i++) { |
1075 | connector = fb_helper->connector_info[i]->connector; | |
38651674 DA |
1076 | enabled[i] = drm_connector_enabled(connector, true); |
1077 | DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, | |
1078 | enabled[i] ? "yes" : "no"); | |
1079 | any_enabled |= enabled[i]; | |
38651674 DA |
1080 | } |
1081 | ||
1082 | if (any_enabled) | |
1083 | return; | |
1084 | ||
0b4c0f3f DA |
1085 | for (i = 0; i < fb_helper->connector_count; i++) { |
1086 | connector = fb_helper->connector_info[i]->connector; | |
38651674 | 1087 | enabled[i] = drm_connector_enabled(connector, false); |
38651674 DA |
1088 | } |
1089 | } | |
1090 | ||
1d42bbc8 DA |
1091 | static bool drm_target_cloned(struct drm_fb_helper *fb_helper, |
1092 | struct drm_display_mode **modes, | |
1093 | bool *enabled, int width, int height) | |
1094 | { | |
1095 | int count, i, j; | |
1096 | bool can_clone = false; | |
1097 | struct drm_fb_helper_connector *fb_helper_conn; | |
1098 | struct drm_display_mode *dmt_mode, *mode; | |
1099 | ||
1100 | /* only contemplate cloning in the single crtc case */ | |
1101 | if (fb_helper->crtc_count > 1) | |
1102 | return false; | |
1103 | ||
1104 | count = 0; | |
1105 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1106 | if (enabled[i]) | |
1107 | count++; | |
1108 | } | |
1109 | ||
1110 | /* only contemplate cloning if more than one connector is enabled */ | |
1111 | if (count <= 1) | |
1112 | return false; | |
1113 | ||
1114 | /* check the command line or if nothing common pick 1024x768 */ | |
1115 | can_clone = true; | |
1116 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1117 | if (!enabled[i]) | |
1118 | continue; | |
1119 | fb_helper_conn = fb_helper->connector_info[i]; | |
1120 | modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); | |
1121 | if (!modes[i]) { | |
1122 | can_clone = false; | |
1123 | break; | |
1124 | } | |
1125 | for (j = 0; j < i; j++) { | |
1126 | if (!enabled[j]) | |
1127 | continue; | |
1128 | if (!drm_mode_equal(modes[j], modes[i])) | |
1129 | can_clone = false; | |
1130 | } | |
1131 | } | |
1132 | ||
1133 | if (can_clone) { | |
1134 | DRM_DEBUG_KMS("can clone using command line\n"); | |
1135 | return true; | |
1136 | } | |
1137 | ||
1138 | /* try and find a 1024x768 mode on each connector */ | |
1139 | can_clone = true; | |
1140 | dmt_mode = drm_mode_find_dmt(fb_helper->dev, 1024, 768, 60); | |
1141 | ||
1142 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1143 | ||
1144 | if (!enabled[i]) | |
1145 | continue; | |
1146 | ||
1147 | fb_helper_conn = fb_helper->connector_info[i]; | |
1148 | list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { | |
1149 | if (drm_mode_equal(mode, dmt_mode)) | |
1150 | modes[i] = mode; | |
1151 | } | |
1152 | if (!modes[i]) | |
1153 | can_clone = false; | |
1154 | } | |
1155 | ||
1156 | if (can_clone) { | |
1157 | DRM_DEBUG_KMS("can clone using 1024x768\n"); | |
1158 | return true; | |
1159 | } | |
1160 | DRM_INFO("kms: can't enable cloning when we probably wanted to.\n"); | |
1161 | return false; | |
1162 | } | |
1163 | ||
0b4c0f3f | 1164 | static bool drm_target_preferred(struct drm_fb_helper *fb_helper, |
38651674 DA |
1165 | struct drm_display_mode **modes, |
1166 | bool *enabled, int width, int height) | |
1167 | { | |
0b4c0f3f DA |
1168 | struct drm_fb_helper_connector *fb_helper_conn; |
1169 | int i; | |
38651674 | 1170 | |
0b4c0f3f DA |
1171 | for (i = 0; i < fb_helper->connector_count; i++) { |
1172 | fb_helper_conn = fb_helper->connector_info[i]; | |
38651674 | 1173 | |
0b4c0f3f | 1174 | if (enabled[i] == false) |
38651674 | 1175 | continue; |
38651674 DA |
1176 | |
1177 | DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n", | |
0b4c0f3f | 1178 | fb_helper_conn->connector->base.id); |
38651674 DA |
1179 | |
1180 | /* got for command line mode first */ | |
0b4c0f3f | 1181 | modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); |
38651674 DA |
1182 | if (!modes[i]) { |
1183 | DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", | |
0b4c0f3f DA |
1184 | fb_helper_conn->connector->base.id); |
1185 | modes[i] = drm_has_preferred_mode(fb_helper_conn, width, height); | |
38651674 DA |
1186 | } |
1187 | /* No preferred modes, pick one off the list */ | |
0b4c0f3f DA |
1188 | if (!modes[i] && !list_empty(&fb_helper_conn->connector->modes)) { |
1189 | list_for_each_entry(modes[i], &fb_helper_conn->connector->modes, head) | |
38651674 DA |
1190 | break; |
1191 | } | |
1192 | DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : | |
1193 | "none"); | |
38651674 DA |
1194 | } |
1195 | return true; | |
1196 | } | |
1197 | ||
8be48d92 DA |
1198 | static int drm_pick_crtcs(struct drm_fb_helper *fb_helper, |
1199 | struct drm_fb_helper_crtc **best_crtcs, | |
38651674 DA |
1200 | struct drm_display_mode **modes, |
1201 | int n, int width, int height) | |
1202 | { | |
1203 | int c, o; | |
8be48d92 | 1204 | struct drm_device *dev = fb_helper->dev; |
38651674 DA |
1205 | struct drm_connector *connector; |
1206 | struct drm_connector_helper_funcs *connector_funcs; | |
1207 | struct drm_encoder *encoder; | |
8be48d92 | 1208 | struct drm_fb_helper_crtc *best_crtc; |
38651674 | 1209 | int my_score, best_score, score; |
8be48d92 | 1210 | struct drm_fb_helper_crtc **crtcs, *crtc; |
0b4c0f3f | 1211 | struct drm_fb_helper_connector *fb_helper_conn; |
38651674 | 1212 | |
0b4c0f3f | 1213 | if (n == fb_helper->connector_count) |
38651674 | 1214 | return 0; |
0b4c0f3f DA |
1215 | |
1216 | fb_helper_conn = fb_helper->connector_info[n]; | |
1217 | connector = fb_helper_conn->connector; | |
38651674 DA |
1218 | |
1219 | best_crtcs[n] = NULL; | |
1220 | best_crtc = NULL; | |
8be48d92 | 1221 | best_score = drm_pick_crtcs(fb_helper, best_crtcs, modes, n+1, width, height); |
38651674 DA |
1222 | if (modes[n] == NULL) |
1223 | return best_score; | |
1224 | ||
8be48d92 DA |
1225 | crtcs = kzalloc(dev->mode_config.num_connector * |
1226 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); | |
38651674 DA |
1227 | if (!crtcs) |
1228 | return best_score; | |
1229 | ||
1230 | my_score = 1; | |
1231 | if (connector->status == connector_status_connected) | |
1232 | my_score++; | |
0b4c0f3f | 1233 | if (drm_has_cmdline_mode(fb_helper_conn)) |
38651674 | 1234 | my_score++; |
0b4c0f3f | 1235 | if (drm_has_preferred_mode(fb_helper_conn, width, height)) |
38651674 DA |
1236 | my_score++; |
1237 | ||
1238 | connector_funcs = connector->helper_private; | |
1239 | encoder = connector_funcs->best_encoder(connector); | |
1240 | if (!encoder) | |
1241 | goto out; | |
1242 | ||
38651674 DA |
1243 | /* select a crtc for this connector and then attempt to configure |
1244 | remaining connectors */ | |
8be48d92 DA |
1245 | for (c = 0; c < fb_helper->crtc_count; c++) { |
1246 | crtc = &fb_helper->crtc_info[c]; | |
38651674 DA |
1247 | |
1248 | if ((encoder->possible_crtcs & (1 << c)) == 0) { | |
38651674 DA |
1249 | continue; |
1250 | } | |
1251 | ||
1252 | for (o = 0; o < n; o++) | |
1253 | if (best_crtcs[o] == crtc) | |
1254 | break; | |
1255 | ||
1256 | if (o < n) { | |
1d42bbc8 DA |
1257 | /* ignore cloning unless only a single crtc */ |
1258 | if (fb_helper->crtc_count > 1) | |
1259 | continue; | |
1260 | ||
1261 | if (!drm_mode_equal(modes[o], modes[n])) | |
1262 | continue; | |
38651674 DA |
1263 | } |
1264 | ||
1265 | crtcs[n] = crtc; | |
8be48d92 DA |
1266 | memcpy(crtcs, best_crtcs, n * sizeof(struct drm_fb_helper_crtc *)); |
1267 | score = my_score + drm_pick_crtcs(fb_helper, crtcs, modes, n + 1, | |
38651674 DA |
1268 | width, height); |
1269 | if (score > best_score) { | |
1270 | best_crtc = crtc; | |
1271 | best_score = score; | |
1272 | memcpy(best_crtcs, crtcs, | |
1273 | dev->mode_config.num_connector * | |
8be48d92 | 1274 | sizeof(struct drm_fb_helper_crtc *)); |
38651674 | 1275 | } |
38651674 DA |
1276 | } |
1277 | out: | |
1278 | kfree(crtcs); | |
1279 | return best_score; | |
1280 | } | |
1281 | ||
8be48d92 | 1282 | static void drm_setup_crtcs(struct drm_fb_helper *fb_helper) |
38651674 | 1283 | { |
8be48d92 DA |
1284 | struct drm_device *dev = fb_helper->dev; |
1285 | struct drm_fb_helper_crtc **crtcs; | |
38651674 DA |
1286 | struct drm_display_mode **modes; |
1287 | struct drm_encoder *encoder; | |
8be48d92 | 1288 | struct drm_mode_set *modeset; |
38651674 DA |
1289 | bool *enabled; |
1290 | int width, height; | |
1291 | int i, ret; | |
1292 | ||
1293 | DRM_DEBUG_KMS("\n"); | |
1294 | ||
1295 | width = dev->mode_config.max_width; | |
1296 | height = dev->mode_config.max_height; | |
1297 | ||
1298 | /* clean out all the encoder/crtc combos */ | |
1299 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
1300 | encoder->crtc = NULL; | |
1301 | } | |
1302 | ||
1303 | crtcs = kcalloc(dev->mode_config.num_connector, | |
8be48d92 | 1304 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); |
38651674 DA |
1305 | modes = kcalloc(dev->mode_config.num_connector, |
1306 | sizeof(struct drm_display_mode *), GFP_KERNEL); | |
1307 | enabled = kcalloc(dev->mode_config.num_connector, | |
1308 | sizeof(bool), GFP_KERNEL); | |
1309 | ||
0b4c0f3f | 1310 | drm_enable_connectors(fb_helper, enabled); |
38651674 | 1311 | |
1d42bbc8 DA |
1312 | ret = drm_target_cloned(fb_helper, modes, enabled, width, height); |
1313 | if (!ret) { | |
1314 | ret = drm_target_preferred(fb_helper, modes, enabled, width, height); | |
1315 | if (!ret) | |
1316 | DRM_ERROR("Unable to find initial modes\n"); | |
1317 | } | |
38651674 DA |
1318 | |
1319 | DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height); | |
1320 | ||
8be48d92 DA |
1321 | drm_pick_crtcs(fb_helper, crtcs, modes, 0, width, height); |
1322 | ||
1323 | /* need to set the modesets up here for use later */ | |
1324 | /* fill out the connector<->crtc mappings into the modesets */ | |
1325 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
1326 | modeset = &fb_helper->crtc_info[i].mode_set; | |
1327 | modeset->num_connectors = 0; | |
1328 | } | |
38651674 | 1329 | |
0b4c0f3f | 1330 | for (i = 0; i < fb_helper->connector_count; i++) { |
38651674 | 1331 | struct drm_display_mode *mode = modes[i]; |
8be48d92 DA |
1332 | struct drm_fb_helper_crtc *fb_crtc = crtcs[i]; |
1333 | modeset = &fb_crtc->mode_set; | |
38651674 | 1334 | |
8be48d92 | 1335 | if (mode && fb_crtc) { |
38651674 | 1336 | DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", |
8be48d92 DA |
1337 | mode->name, fb_crtc->mode_set.crtc->base.id); |
1338 | fb_crtc->desired_mode = mode; | |
1339 | if (modeset->mode) | |
1340 | drm_mode_destroy(dev, modeset->mode); | |
1341 | modeset->mode = drm_mode_duplicate(dev, | |
1342 | fb_crtc->desired_mode); | |
0b4c0f3f | 1343 | modeset->connectors[modeset->num_connectors++] = fb_helper->connector_info[i]->connector; |
38651674 | 1344 | } |
38651674 DA |
1345 | } |
1346 | ||
1347 | kfree(crtcs); | |
1348 | kfree(modes); | |
1349 | kfree(enabled); | |
1350 | } | |
1351 | ||
1352 | /** | |
1353 | * drm_helper_initial_config - setup a sane initial connector configuration | |
1354 | * @dev: DRM device | |
1355 | * | |
1356 | * LOCKING: | |
1357 | * Called at init time, must take mode config lock. | |
1358 | * | |
1359 | * Scan the CRTCs and connectors and try to put together an initial setup. | |
1360 | * At the moment, this is a cloned configuration across all heads with | |
1361 | * a new framebuffer object as the backing store. | |
1362 | * | |
1363 | * RETURNS: | |
1364 | * Zero if everything went ok, nonzero otherwise. | |
1365 | */ | |
4abe3520 | 1366 | bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel) |
38651674 | 1367 | { |
8be48d92 | 1368 | struct drm_device *dev = fb_helper->dev; |
38651674 DA |
1369 | int count = 0; |
1370 | ||
1371 | /* disable all the possible outputs/crtcs before entering KMS mode */ | |
8be48d92 | 1372 | drm_helper_disable_unused_functions(fb_helper->dev); |
38651674 | 1373 | |
0b4c0f3f | 1374 | drm_fb_helper_parse_command_line(fb_helper); |
38651674 | 1375 | |
0b4c0f3f DA |
1376 | count = drm_fb_helper_probe_connector_modes(fb_helper, |
1377 | dev->mode_config.max_width, | |
1378 | dev->mode_config.max_height); | |
38651674 DA |
1379 | /* |
1380 | * we shouldn't end up with no modes here. | |
1381 | */ | |
5c4426a7 | 1382 | if (count == 0) { |
eb1f8e4f | 1383 | printk(KERN_INFO "No connectors reported connected with modes\n"); |
5c4426a7 | 1384 | } |
8be48d92 | 1385 | drm_setup_crtcs(fb_helper); |
38651674 | 1386 | |
4abe3520 | 1387 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
38651674 | 1388 | } |
8be48d92 | 1389 | EXPORT_SYMBOL(drm_fb_helper_initial_config); |
38651674 | 1390 | |
7394371d CW |
1391 | /** |
1392 | * drm_fb_helper_hotplug_event - respond to a hotplug notification by | |
1393 | * probing all the outputs attached to the fb. | |
1394 | * @fb_helper: the drm_fb_helper | |
1395 | * | |
1396 | * LOCKING: | |
1397 | * Called at runtime, must take mode config lock. | |
1398 | * | |
1399 | * Scan the connectors attached to the fb_helper and try to put together a | |
1400 | * setup after *notification of a change in output configuration. | |
1401 | * | |
1402 | * RETURNS: | |
1403 | * 0 on success and a non-zero error code otherwise. | |
1404 | */ | |
1405 | int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper) | |
38651674 | 1406 | { |
7394371d | 1407 | struct drm_device *dev = fb_helper->dev; |
5c4426a7 | 1408 | int count = 0; |
4abe3520 | 1409 | u32 max_width, max_height, bpp_sel; |
4abe3520 DA |
1410 | bool bound = false, crtcs_bound = false; |
1411 | struct drm_crtc *crtc; | |
5c4426a7 | 1412 | |
eb1f8e4f | 1413 | if (!fb_helper->fb) |
7394371d | 1414 | return 0; |
4abe3520 | 1415 | |
7394371d CW |
1416 | mutex_lock(&dev->mode_config.mutex); |
1417 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
4abe3520 DA |
1418 | if (crtc->fb) |
1419 | crtcs_bound = true; | |
1420 | if (crtc->fb == fb_helper->fb) | |
1421 | bound = true; | |
1422 | } | |
1423 | ||
eb1f8e4f | 1424 | if (!bound && crtcs_bound) { |
4abe3520 | 1425 | fb_helper->delayed_hotplug = true; |
7394371d CW |
1426 | mutex_unlock(&dev->mode_config.mutex); |
1427 | return 0; | |
4abe3520 | 1428 | } |
eb1f8e4f | 1429 | DRM_DEBUG_KMS("\n"); |
4abe3520 | 1430 | |
eb1f8e4f DA |
1431 | max_width = fb_helper->fb->width; |
1432 | max_height = fb_helper->fb->height; | |
1433 | bpp_sel = fb_helper->fb->bits_per_pixel; | |
5c4426a7 | 1434 | |
eb1f8e4f DA |
1435 | count = drm_fb_helper_probe_connector_modes(fb_helper, max_width, |
1436 | max_height); | |
1437 | drm_setup_crtcs(fb_helper); | |
7394371d | 1438 | mutex_unlock(&dev->mode_config.mutex); |
4abe3520 | 1439 | |
eb1f8e4f | 1440 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
5c4426a7 | 1441 | } |
eb1f8e4f | 1442 | EXPORT_SYMBOL(drm_fb_helper_hotplug_event); |
5c4426a7 | 1443 | |
6a108a14 | 1444 | /* The Kconfig DRM_KMS_HELPER selects FRAMEBUFFER_CONSOLE (if !EXPERT) |
3ce05168 DF |
1445 | * but the module doesn't depend on any fb console symbols. At least |
1446 | * attempt to load fbcon to avoid leaving the system without a usable console. | |
1447 | */ | |
6a108a14 | 1448 | #if defined(CONFIG_FRAMEBUFFER_CONSOLE_MODULE) && !defined(CONFIG_EXPERT) |
3ce05168 DF |
1449 | static int __init drm_fb_helper_modinit(void) |
1450 | { | |
1451 | const char *name = "fbcon"; | |
1452 | struct module *fbcon; | |
1453 | ||
1454 | mutex_lock(&module_mutex); | |
1455 | fbcon = find_module(name); | |
1456 | mutex_unlock(&module_mutex); | |
1457 | ||
1458 | if (!fbcon) | |
1459 | request_module_nowait(name); | |
1460 | return 0; | |
1461 | } | |
1462 | ||
1463 | module_init(drm_fb_helper_modinit); | |
1464 | #endif |