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Commit | Line | Data |
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785b93ef DA |
1 | /* |
2 | * Copyright (c) 2006-2009 Red Hat Inc. | |
3 | * Copyright (c) 2006-2008 Intel Corporation | |
4 | * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> | |
5 | * | |
6 | * DRM framebuffer helper functions | |
7 | * | |
8 | * Permission to use, copy, modify, distribute, and sell this software and its | |
9 | * documentation for any purpose is hereby granted without fee, provided that | |
10 | * the above copyright notice appear in all copies and that both that copyright | |
11 | * notice and this permission notice appear in supporting documentation, and | |
12 | * that the name of the copyright holders not be used in advertising or | |
13 | * publicity pertaining to distribution of the software without specific, | |
14 | * written prior permission. The copyright holders make no representations | |
15 | * about the suitability of this software for any purpose. It is provided "as | |
16 | * is" without express or implied warranty. | |
17 | * | |
18 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
19 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
20 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
21 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
22 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
23 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
24 | * OF THIS SOFTWARE. | |
25 | * | |
26 | * Authors: | |
27 | * Dave Airlie <airlied@linux.ie> | |
28 | * Jesse Barnes <jesse.barnes@intel.com> | |
29 | */ | |
3b40a443 | 30 | #include <linux/kernel.h> |
785b93ef | 31 | #include <linux/sysrq.h> |
5a0e3ad6 | 32 | #include <linux/slab.h> |
785b93ef DA |
33 | #include <linux/fb.h> |
34 | #include "drmP.h" | |
35 | #include "drm_crtc.h" | |
36 | #include "drm_fb_helper.h" | |
37 | #include "drm_crtc_helper.h" | |
38 | ||
6fcefd56 DA |
39 | MODULE_AUTHOR("David Airlie, Jesse Barnes"); |
40 | MODULE_DESCRIPTION("DRM KMS helper"); | |
41 | MODULE_LICENSE("GPL and additional rights"); | |
42 | ||
785b93ef DA |
43 | static LIST_HEAD(kernel_fb_helper_list); |
44 | ||
0b4c0f3f DA |
45 | /* simple single crtc case helper function */ |
46 | int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper) | |
d50ba256 | 47 | { |
0b4c0f3f DA |
48 | struct drm_device *dev = fb_helper->dev; |
49 | struct drm_connector *connector; | |
50 | int i; | |
d50ba256 | 51 | |
0b4c0f3f DA |
52 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
53 | struct drm_fb_helper_connector *fb_helper_connector; | |
54 | ||
55 | fb_helper_connector = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL); | |
56 | if (!fb_helper_connector) | |
57 | goto fail; | |
d50ba256 | 58 | |
0b4c0f3f DA |
59 | fb_helper_connector->connector = connector; |
60 | fb_helper->connector_info[fb_helper->connector_count++] = fb_helper_connector; | |
61 | } | |
d50ba256 | 62 | return 0; |
0b4c0f3f DA |
63 | fail: |
64 | for (i = 0; i < fb_helper->connector_count; i++) { | |
65 | kfree(fb_helper->connector_info[i]); | |
66 | fb_helper->connector_info[i] = NULL; | |
67 | } | |
68 | fb_helper->connector_count = 0; | |
69 | return -ENOMEM; | |
d50ba256 | 70 | } |
0b4c0f3f | 71 | EXPORT_SYMBOL(drm_fb_helper_single_add_all_connectors); |
d50ba256 | 72 | |
0b4c0f3f | 73 | static int drm_fb_helper_parse_command_line(struct drm_fb_helper *fb_helper) |
d50ba256 | 74 | { |
0b4c0f3f DA |
75 | struct drm_fb_helper_connector *fb_helper_conn; |
76 | int i; | |
d50ba256 | 77 | |
0b4c0f3f | 78 | for (i = 0; i < fb_helper->connector_count; i++) { |
1794d257 CW |
79 | struct drm_cmdline_mode *mode; |
80 | struct drm_connector *connector; | |
d50ba256 DA |
81 | char *option = NULL; |
82 | ||
0b4c0f3f | 83 | fb_helper_conn = fb_helper->connector_info[i]; |
1794d257 CW |
84 | connector = fb_helper_conn->connector; |
85 | mode = &fb_helper_conn->cmdline_mode; | |
0b4c0f3f | 86 | |
d50ba256 | 87 | /* do something on return - turn off connector maybe */ |
1794d257 | 88 | if (fb_get_options(drm_get_connector_name(connector), &option)) |
d50ba256 DA |
89 | continue; |
90 | ||
1794d257 CW |
91 | if (drm_mode_parse_command_line_for_connector(option, |
92 | connector, | |
93 | mode)) { | |
94 | if (mode->force) { | |
95 | const char *s; | |
96 | switch (mode->force) { | |
97 | case DRM_FORCE_OFF: s = "OFF"; break; | |
98 | case DRM_FORCE_ON_DIGITAL: s = "ON - dig"; break; | |
99 | default: | |
100 | case DRM_FORCE_ON: s = "ON"; break; | |
101 | } | |
102 | ||
103 | DRM_INFO("forcing %s connector %s\n", | |
104 | drm_get_connector_name(connector), s); | |
105 | connector->force = mode->force; | |
106 | } | |
107 | ||
108 | DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n", | |
109 | drm_get_connector_name(connector), | |
110 | mode->xres, mode->yres, | |
111 | mode->refresh_specified ? mode->refresh : 60, | |
112 | mode->rb ? " reduced blanking" : "", | |
113 | mode->margins ? " with margins" : "", | |
114 | mode->interlace ? " interlaced" : ""); | |
115 | } | |
116 | ||
d50ba256 DA |
117 | } |
118 | return 0; | |
119 | } | |
120 | ||
99231028 JW |
121 | static void drm_fb_helper_save_lut_atomic(struct drm_crtc *crtc, struct drm_fb_helper *helper) |
122 | { | |
123 | uint16_t *r_base, *g_base, *b_base; | |
124 | int i; | |
125 | ||
126 | r_base = crtc->gamma_store; | |
127 | g_base = r_base + crtc->gamma_size; | |
128 | b_base = g_base + crtc->gamma_size; | |
129 | ||
130 | for (i = 0; i < crtc->gamma_size; i++) | |
131 | helper->funcs->gamma_get(crtc, &r_base[i], &g_base[i], &b_base[i], i); | |
132 | } | |
133 | ||
134 | static void drm_fb_helper_restore_lut_atomic(struct drm_crtc *crtc) | |
135 | { | |
136 | uint16_t *r_base, *g_base, *b_base; | |
137 | ||
138 | r_base = crtc->gamma_store; | |
139 | g_base = r_base + crtc->gamma_size; | |
140 | b_base = g_base + crtc->gamma_size; | |
141 | ||
142 | crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size); | |
143 | } | |
144 | ||
1a7aba7f JB |
145 | int drm_fb_helper_debug_enter(struct fb_info *info) |
146 | { | |
147 | struct drm_fb_helper *helper = info->par; | |
148 | struct drm_crtc_helper_funcs *funcs; | |
149 | int i; | |
150 | ||
151 | if (list_empty(&kernel_fb_helper_list)) | |
152 | return false; | |
153 | ||
154 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { | |
155 | for (i = 0; i < helper->crtc_count; i++) { | |
156 | struct drm_mode_set *mode_set = | |
157 | &helper->crtc_info[i].mode_set; | |
158 | ||
159 | if (!mode_set->crtc->enabled) | |
160 | continue; | |
161 | ||
162 | funcs = mode_set->crtc->helper_private; | |
99231028 | 163 | drm_fb_helper_save_lut_atomic(mode_set->crtc, helper); |
1a7aba7f JB |
164 | funcs->mode_set_base_atomic(mode_set->crtc, |
165 | mode_set->fb, | |
166 | mode_set->x, | |
413d45d3 | 167 | mode_set->y, |
21c74a8e | 168 | ENTER_ATOMIC_MODE_SET); |
1a7aba7f JB |
169 | } |
170 | } | |
171 | ||
172 | return 0; | |
173 | } | |
174 | EXPORT_SYMBOL(drm_fb_helper_debug_enter); | |
175 | ||
176 | /* Find the real fb for a given fb helper CRTC */ | |
177 | static struct drm_framebuffer *drm_mode_config_fb(struct drm_crtc *crtc) | |
178 | { | |
179 | struct drm_device *dev = crtc->dev; | |
180 | struct drm_crtc *c; | |
181 | ||
182 | list_for_each_entry(c, &dev->mode_config.crtc_list, head) { | |
183 | if (crtc->base.id == c->base.id) | |
184 | return c->fb; | |
185 | } | |
186 | ||
187 | return NULL; | |
188 | } | |
189 | ||
190 | int drm_fb_helper_debug_leave(struct fb_info *info) | |
191 | { | |
192 | struct drm_fb_helper *helper = info->par; | |
193 | struct drm_crtc *crtc; | |
194 | struct drm_crtc_helper_funcs *funcs; | |
195 | struct drm_framebuffer *fb; | |
196 | int i; | |
197 | ||
198 | for (i = 0; i < helper->crtc_count; i++) { | |
199 | struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set; | |
200 | crtc = mode_set->crtc; | |
201 | funcs = crtc->helper_private; | |
202 | fb = drm_mode_config_fb(crtc); | |
203 | ||
204 | if (!crtc->enabled) | |
205 | continue; | |
206 | ||
207 | if (!fb) { | |
208 | DRM_ERROR("no fb to restore??\n"); | |
209 | continue; | |
210 | } | |
211 | ||
99231028 | 212 | drm_fb_helper_restore_lut_atomic(mode_set->crtc); |
1a7aba7f | 213 | funcs->mode_set_base_atomic(mode_set->crtc, fb, crtc->x, |
21c74a8e | 214 | crtc->y, LEAVE_ATOMIC_MODE_SET); |
1a7aba7f JB |
215 | } |
216 | ||
217 | return 0; | |
218 | } | |
219 | EXPORT_SYMBOL(drm_fb_helper_debug_leave); | |
220 | ||
e8e7a2b8 DA |
221 | bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper) |
222 | { | |
223 | bool error = false; | |
224 | int i, ret; | |
225 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
226 | struct drm_mode_set *mode_set = &fb_helper->crtc_info[i].mode_set; | |
227 | ret = drm_crtc_helper_set_config(mode_set); | |
228 | if (ret) | |
229 | error = true; | |
230 | } | |
231 | return error; | |
232 | } | |
233 | EXPORT_SYMBOL(drm_fb_helper_restore_fbdev_mode); | |
234 | ||
785b93ef DA |
235 | bool drm_fb_helper_force_kernel_mode(void) |
236 | { | |
785b93ef DA |
237 | bool ret, error = false; |
238 | struct drm_fb_helper *helper; | |
239 | ||
240 | if (list_empty(&kernel_fb_helper_list)) | |
241 | return false; | |
242 | ||
243 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { | |
e8e7a2b8 DA |
244 | if (helper->dev->switch_power_state == DRM_SWITCH_POWER_OFF) |
245 | continue; | |
246 | ||
247 | ret = drm_fb_helper_restore_fbdev_mode(helper); | |
248 | if (ret) | |
249 | error = true; | |
785b93ef DA |
250 | } |
251 | return error; | |
252 | } | |
253 | ||
254 | int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed, | |
255 | void *panic_str) | |
256 | { | |
fc2362af | 257 | printk(KERN_ERR "panic occurred, switching back to text console\n"); |
785b93ef DA |
258 | return drm_fb_helper_force_kernel_mode(); |
259 | return 0; | |
260 | } | |
261 | EXPORT_SYMBOL(drm_fb_helper_panic); | |
262 | ||
263 | static struct notifier_block paniced = { | |
264 | .notifier_call = drm_fb_helper_panic, | |
265 | }; | |
266 | ||
267 | /** | |
268 | * drm_fb_helper_restore - restore the framebuffer console (kernel) config | |
269 | * | |
270 | * Restore's the kernel's fbcon mode, used for lastclose & panic paths. | |
271 | */ | |
272 | void drm_fb_helper_restore(void) | |
273 | { | |
274 | bool ret; | |
275 | ret = drm_fb_helper_force_kernel_mode(); | |
276 | if (ret == true) | |
277 | DRM_ERROR("Failed to restore crtc configuration\n"); | |
278 | } | |
279 | EXPORT_SYMBOL(drm_fb_helper_restore); | |
280 | ||
bea1d35b | 281 | #ifdef CONFIG_MAGIC_SYSRQ |
785b93ef DA |
282 | static void drm_fb_helper_restore_work_fn(struct work_struct *ignored) |
283 | { | |
284 | drm_fb_helper_restore(); | |
285 | } | |
286 | static DECLARE_WORK(drm_fb_helper_restore_work, drm_fb_helper_restore_work_fn); | |
287 | ||
1495cc9d | 288 | static void drm_fb_helper_sysrq(int dummy1) |
785b93ef DA |
289 | { |
290 | schedule_work(&drm_fb_helper_restore_work); | |
291 | } | |
292 | ||
293 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { | |
294 | .handler = drm_fb_helper_sysrq, | |
295 | .help_msg = "force-fb(V)", | |
296 | .action_msg = "Restore framebuffer console", | |
297 | }; | |
b8c40d62 RD |
298 | #else |
299 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { }; | |
bea1d35b | 300 | #endif |
785b93ef DA |
301 | |
302 | static void drm_fb_helper_on(struct fb_info *info) | |
303 | { | |
304 | struct drm_fb_helper *fb_helper = info->par; | |
305 | struct drm_device *dev = fb_helper->dev; | |
306 | struct drm_crtc *crtc; | |
8be48d92 | 307 | struct drm_crtc_helper_funcs *crtc_funcs; |
023eb571 | 308 | struct drm_connector *connector; |
785b93ef | 309 | struct drm_encoder *encoder; |
023eb571 | 310 | int i, j; |
785b93ef DA |
311 | |
312 | /* | |
313 | * For each CRTC in this fb, turn the crtc on then, | |
314 | * find all associated encoders and turn them on. | |
315 | */ | |
8be48d92 | 316 | mutex_lock(&dev->mode_config.mutex); |
e87b2c42 | 317 | for (i = 0; i < fb_helper->crtc_count; i++) { |
8be48d92 DA |
318 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
319 | crtc_funcs = crtc->helper_private; | |
785b93ef | 320 | |
8be48d92 DA |
321 | if (!crtc->enabled) |
322 | continue; | |
323 | ||
324 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); | |
785b93ef | 325 | |
023eb571 JB |
326 | /* Walk the connectors & encoders on this fb turning them on */ |
327 | for (j = 0; j < fb_helper->connector_count; j++) { | |
328 | connector = fb_helper->connector_info[j]->connector; | |
329 | connector->dpms = DRM_MODE_DPMS_ON; | |
330 | drm_connector_property_set_value(connector, | |
331 | dev->mode_config.dpms_property, | |
332 | DRM_MODE_DPMS_ON); | |
333 | } | |
8be48d92 DA |
334 | /* Found a CRTC on this fb, now find encoders */ |
335 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
336 | if (encoder->crtc == crtc) { | |
337 | struct drm_encoder_helper_funcs *encoder_funcs; | |
785b93ef | 338 | |
8be48d92 DA |
339 | encoder_funcs = encoder->helper_private; |
340 | encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); | |
785b93ef DA |
341 | } |
342 | } | |
343 | } | |
8be48d92 | 344 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
345 | } |
346 | ||
347 | static void drm_fb_helper_off(struct fb_info *info, int dpms_mode) | |
348 | { | |
349 | struct drm_fb_helper *fb_helper = info->par; | |
350 | struct drm_device *dev = fb_helper->dev; | |
351 | struct drm_crtc *crtc; | |
8be48d92 | 352 | struct drm_crtc_helper_funcs *crtc_funcs; |
023eb571 | 353 | struct drm_connector *connector; |
785b93ef | 354 | struct drm_encoder *encoder; |
023eb571 | 355 | int i, j; |
785b93ef DA |
356 | |
357 | /* | |
358 | * For each CRTC in this fb, find all associated encoders | |
359 | * and turn them off, then turn off the CRTC. | |
360 | */ | |
8be48d92 | 361 | mutex_lock(&dev->mode_config.mutex); |
e87b2c42 | 362 | for (i = 0; i < fb_helper->crtc_count; i++) { |
8be48d92 DA |
363 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
364 | crtc_funcs = crtc->helper_private; | |
e87b2c42 | 365 | |
8be48d92 DA |
366 | if (!crtc->enabled) |
367 | continue; | |
e87b2c42 | 368 | |
023eb571 JB |
369 | /* Walk the connectors on this fb and mark them off */ |
370 | for (j = 0; j < fb_helper->connector_count; j++) { | |
371 | connector = fb_helper->connector_info[j]->connector; | |
372 | connector->dpms = dpms_mode; | |
373 | drm_connector_property_set_value(connector, | |
374 | dev->mode_config.dpms_property, | |
375 | dpms_mode); | |
376 | } | |
8be48d92 DA |
377 | /* Found a CRTC on this fb, now find encoders */ |
378 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
379 | if (encoder->crtc == crtc) { | |
380 | struct drm_encoder_helper_funcs *encoder_funcs; | |
e87b2c42 | 381 | |
8be48d92 DA |
382 | encoder_funcs = encoder->helper_private; |
383 | encoder_funcs->dpms(encoder, dpms_mode); | |
e87b2c42 | 384 | } |
785b93ef | 385 | } |
8be48d92 | 386 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF); |
785b93ef | 387 | } |
8be48d92 | 388 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
389 | } |
390 | ||
391 | int drm_fb_helper_blank(int blank, struct fb_info *info) | |
392 | { | |
393 | switch (blank) { | |
731b5a15 | 394 | /* Display: On; HSync: On, VSync: On */ |
785b93ef DA |
395 | case FB_BLANK_UNBLANK: |
396 | drm_fb_helper_on(info); | |
397 | break; | |
731b5a15 | 398 | /* Display: Off; HSync: On, VSync: On */ |
785b93ef | 399 | case FB_BLANK_NORMAL: |
5fd4df4d | 400 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); |
785b93ef | 401 | break; |
731b5a15 | 402 | /* Display: Off; HSync: Off, VSync: On */ |
785b93ef DA |
403 | case FB_BLANK_HSYNC_SUSPEND: |
404 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); | |
405 | break; | |
731b5a15 | 406 | /* Display: Off; HSync: On, VSync: Off */ |
785b93ef DA |
407 | case FB_BLANK_VSYNC_SUSPEND: |
408 | drm_fb_helper_off(info, DRM_MODE_DPMS_SUSPEND); | |
409 | break; | |
731b5a15 | 410 | /* Display: Off; HSync: Off, VSync: Off */ |
785b93ef DA |
411 | case FB_BLANK_POWERDOWN: |
412 | drm_fb_helper_off(info, DRM_MODE_DPMS_OFF); | |
413 | break; | |
414 | } | |
415 | return 0; | |
416 | } | |
417 | EXPORT_SYMBOL(drm_fb_helper_blank); | |
418 | ||
419 | static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) | |
420 | { | |
421 | int i; | |
422 | ||
0b4c0f3f DA |
423 | for (i = 0; i < helper->connector_count; i++) |
424 | kfree(helper->connector_info[i]); | |
425 | kfree(helper->connector_info); | |
785b93ef DA |
426 | for (i = 0; i < helper->crtc_count; i++) |
427 | kfree(helper->crtc_info[i].mode_set.connectors); | |
428 | kfree(helper->crtc_info); | |
429 | } | |
430 | ||
4abe3520 DA |
431 | int drm_fb_helper_init(struct drm_device *dev, |
432 | struct drm_fb_helper *fb_helper, | |
eb1f8e4f | 433 | int crtc_count, int max_conn_count) |
785b93ef | 434 | { |
785b93ef DA |
435 | struct drm_crtc *crtc; |
436 | int ret = 0; | |
437 | int i; | |
438 | ||
4abe3520 | 439 | fb_helper->dev = dev; |
4abe3520 DA |
440 | |
441 | INIT_LIST_HEAD(&fb_helper->kernel_fb_list); | |
442 | ||
443 | fb_helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL); | |
444 | if (!fb_helper->crtc_info) | |
785b93ef DA |
445 | return -ENOMEM; |
446 | ||
4abe3520 DA |
447 | fb_helper->crtc_count = crtc_count; |
448 | fb_helper->connector_info = kcalloc(dev->mode_config.num_connector, sizeof(struct drm_fb_helper_connector *), GFP_KERNEL); | |
449 | if (!fb_helper->connector_info) { | |
450 | kfree(fb_helper->crtc_info); | |
0b4c0f3f DA |
451 | return -ENOMEM; |
452 | } | |
4abe3520 | 453 | fb_helper->connector_count = 0; |
785b93ef DA |
454 | |
455 | for (i = 0; i < crtc_count; i++) { | |
4abe3520 | 456 | fb_helper->crtc_info[i].mode_set.connectors = |
785b93ef DA |
457 | kcalloc(max_conn_count, |
458 | sizeof(struct drm_connector *), | |
459 | GFP_KERNEL); | |
460 | ||
4abe3520 | 461 | if (!fb_helper->crtc_info[i].mode_set.connectors) { |
785b93ef DA |
462 | ret = -ENOMEM; |
463 | goto out_free; | |
464 | } | |
4abe3520 | 465 | fb_helper->crtc_info[i].mode_set.num_connectors = 0; |
785b93ef DA |
466 | } |
467 | ||
468 | i = 0; | |
469 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
4abe3520 DA |
470 | fb_helper->crtc_info[i].crtc_id = crtc->base.id; |
471 | fb_helper->crtc_info[i].mode_set.crtc = crtc; | |
785b93ef DA |
472 | i++; |
473 | } | |
4abe3520 | 474 | fb_helper->conn_limit = max_conn_count; |
785b93ef DA |
475 | return 0; |
476 | out_free: | |
4abe3520 | 477 | drm_fb_helper_crtc_free(fb_helper); |
785b93ef DA |
478 | return -ENOMEM; |
479 | } | |
4abe3520 DA |
480 | EXPORT_SYMBOL(drm_fb_helper_init); |
481 | ||
482 | void drm_fb_helper_fini(struct drm_fb_helper *fb_helper) | |
483 | { | |
484 | if (!list_empty(&fb_helper->kernel_fb_list)) { | |
485 | list_del(&fb_helper->kernel_fb_list); | |
486 | if (list_empty(&kernel_fb_helper_list)) { | |
3da1f33e | 487 | printk(KERN_INFO "drm: unregistered panic notifier\n"); |
4abe3520 DA |
488 | atomic_notifier_chain_unregister(&panic_notifier_list, |
489 | &paniced); | |
490 | unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
491 | } | |
492 | } | |
493 | ||
494 | drm_fb_helper_crtc_free(fb_helper); | |
495 | ||
4abe3520 DA |
496 | } |
497 | EXPORT_SYMBOL(drm_fb_helper_fini); | |
785b93ef | 498 | |
c850cb78 | 499 | static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, |
b8c00ac5 DA |
500 | u16 blue, u16 regno, struct fb_info *info) |
501 | { | |
502 | struct drm_fb_helper *fb_helper = info->par; | |
503 | struct drm_framebuffer *fb = fb_helper->fb; | |
504 | int pindex; | |
505 | ||
c850cb78 DA |
506 | if (info->fix.visual == FB_VISUAL_TRUECOLOR) { |
507 | u32 *palette; | |
508 | u32 value; | |
509 | /* place color in psuedopalette */ | |
510 | if (regno > 16) | |
511 | return -EINVAL; | |
512 | palette = (u32 *)info->pseudo_palette; | |
513 | red >>= (16 - info->var.red.length); | |
514 | green >>= (16 - info->var.green.length); | |
515 | blue >>= (16 - info->var.blue.length); | |
516 | value = (red << info->var.red.offset) | | |
517 | (green << info->var.green.offset) | | |
518 | (blue << info->var.blue.offset); | |
9da12b6a RC |
519 | if (info->var.transp.length > 0) { |
520 | u32 mask = (1 << info->var.transp.length) - 1; | |
521 | mask <<= info->var.transp.offset; | |
522 | value |= mask; | |
523 | } | |
c850cb78 DA |
524 | palette[regno] = value; |
525 | return 0; | |
526 | } | |
527 | ||
b8c00ac5 DA |
528 | pindex = regno; |
529 | ||
530 | if (fb->bits_per_pixel == 16) { | |
531 | pindex = regno << 3; | |
532 | ||
533 | if (fb->depth == 16 && regno > 63) | |
c850cb78 | 534 | return -EINVAL; |
b8c00ac5 | 535 | if (fb->depth == 15 && regno > 31) |
c850cb78 | 536 | return -EINVAL; |
b8c00ac5 DA |
537 | |
538 | if (fb->depth == 16) { | |
539 | u16 r, g, b; | |
540 | int i; | |
541 | if (regno < 32) { | |
542 | for (i = 0; i < 8; i++) | |
543 | fb_helper->funcs->gamma_set(crtc, red, | |
544 | green, blue, pindex + i); | |
545 | } | |
546 | ||
547 | fb_helper->funcs->gamma_get(crtc, &r, | |
548 | &g, &b, | |
549 | pindex >> 1); | |
550 | ||
551 | for (i = 0; i < 4; i++) | |
552 | fb_helper->funcs->gamma_set(crtc, r, | |
553 | green, b, | |
554 | (pindex >> 1) + i); | |
555 | } | |
556 | } | |
557 | ||
558 | if (fb->depth != 16) | |
559 | fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex); | |
c850cb78 | 560 | return 0; |
b8c00ac5 DA |
561 | } |
562 | ||
068143d3 DA |
563 | int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) |
564 | { | |
565 | struct drm_fb_helper *fb_helper = info->par; | |
8be48d92 | 566 | struct drm_crtc_helper_funcs *crtc_funcs; |
068143d3 DA |
567 | u16 *red, *green, *blue, *transp; |
568 | struct drm_crtc *crtc; | |
062ac622 | 569 | int i, j, rc = 0; |
068143d3 DA |
570 | int start; |
571 | ||
8be48d92 DA |
572 | for (i = 0; i < fb_helper->crtc_count; i++) { |
573 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
574 | crtc_funcs = crtc->helper_private; | |
068143d3 DA |
575 | |
576 | red = cmap->red; | |
577 | green = cmap->green; | |
578 | blue = cmap->blue; | |
579 | transp = cmap->transp; | |
580 | start = cmap->start; | |
581 | ||
062ac622 | 582 | for (j = 0; j < cmap->len; j++) { |
068143d3 DA |
583 | u16 hred, hgreen, hblue, htransp = 0xffff; |
584 | ||
585 | hred = *red++; | |
586 | hgreen = *green++; | |
587 | hblue = *blue++; | |
588 | ||
589 | if (transp) | |
590 | htransp = *transp++; | |
591 | ||
c850cb78 DA |
592 | rc = setcolreg(crtc, hred, hgreen, hblue, start++, info); |
593 | if (rc) | |
594 | return rc; | |
068143d3 DA |
595 | } |
596 | crtc_funcs->load_lut(crtc); | |
597 | } | |
598 | return rc; | |
599 | } | |
600 | EXPORT_SYMBOL(drm_fb_helper_setcmap); | |
601 | ||
785b93ef DA |
602 | int drm_fb_helper_check_var(struct fb_var_screeninfo *var, |
603 | struct fb_info *info) | |
604 | { | |
605 | struct drm_fb_helper *fb_helper = info->par; | |
606 | struct drm_framebuffer *fb = fb_helper->fb; | |
607 | int depth; | |
608 | ||
f90ebd9e | 609 | if (var->pixclock != 0 || in_dbg_master()) |
785b93ef DA |
610 | return -EINVAL; |
611 | ||
612 | /* Need to resize the fb object !!! */ | |
509c7d83 DA |
613 | if (var->bits_per_pixel > fb->bits_per_pixel || var->xres > fb->width || var->yres > fb->height) { |
614 | DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb " | |
615 | "object %dx%d-%d > %dx%d-%d\n", var->xres, var->yres, var->bits_per_pixel, | |
616 | fb->width, fb->height, fb->bits_per_pixel); | |
785b93ef DA |
617 | return -EINVAL; |
618 | } | |
619 | ||
620 | switch (var->bits_per_pixel) { | |
621 | case 16: | |
622 | depth = (var->green.length == 6) ? 16 : 15; | |
623 | break; | |
624 | case 32: | |
625 | depth = (var->transp.length > 0) ? 32 : 24; | |
626 | break; | |
627 | default: | |
628 | depth = var->bits_per_pixel; | |
629 | break; | |
630 | } | |
631 | ||
632 | switch (depth) { | |
633 | case 8: | |
634 | var->red.offset = 0; | |
635 | var->green.offset = 0; | |
636 | var->blue.offset = 0; | |
637 | var->red.length = 8; | |
638 | var->green.length = 8; | |
639 | var->blue.length = 8; | |
640 | var->transp.length = 0; | |
641 | var->transp.offset = 0; | |
642 | break; | |
643 | case 15: | |
644 | var->red.offset = 10; | |
645 | var->green.offset = 5; | |
646 | var->blue.offset = 0; | |
647 | var->red.length = 5; | |
648 | var->green.length = 5; | |
649 | var->blue.length = 5; | |
650 | var->transp.length = 1; | |
651 | var->transp.offset = 15; | |
652 | break; | |
653 | case 16: | |
654 | var->red.offset = 11; | |
655 | var->green.offset = 5; | |
656 | var->blue.offset = 0; | |
657 | var->red.length = 5; | |
658 | var->green.length = 6; | |
659 | var->blue.length = 5; | |
660 | var->transp.length = 0; | |
661 | var->transp.offset = 0; | |
662 | break; | |
663 | case 24: | |
664 | var->red.offset = 16; | |
665 | var->green.offset = 8; | |
666 | var->blue.offset = 0; | |
667 | var->red.length = 8; | |
668 | var->green.length = 8; | |
669 | var->blue.length = 8; | |
670 | var->transp.length = 0; | |
671 | var->transp.offset = 0; | |
672 | break; | |
673 | case 32: | |
674 | var->red.offset = 16; | |
675 | var->green.offset = 8; | |
676 | var->blue.offset = 0; | |
677 | var->red.length = 8; | |
678 | var->green.length = 8; | |
679 | var->blue.length = 8; | |
680 | var->transp.length = 8; | |
681 | var->transp.offset = 24; | |
682 | break; | |
683 | default: | |
684 | return -EINVAL; | |
685 | } | |
686 | return 0; | |
687 | } | |
688 | EXPORT_SYMBOL(drm_fb_helper_check_var); | |
689 | ||
690 | /* this will let fbcon do the mode init */ | |
691 | int drm_fb_helper_set_par(struct fb_info *info) | |
692 | { | |
693 | struct drm_fb_helper *fb_helper = info->par; | |
694 | struct drm_device *dev = fb_helper->dev; | |
695 | struct fb_var_screeninfo *var = &info->var; | |
696 | struct drm_crtc *crtc; | |
697 | int ret; | |
698 | int i; | |
699 | ||
5349ef31 | 700 | if (var->pixclock != 0) { |
172e91f5 | 701 | DRM_ERROR("PIXEL CLOCK SET\n"); |
785b93ef DA |
702 | return -EINVAL; |
703 | } | |
704 | ||
8be48d92 DA |
705 | mutex_lock(&dev->mode_config.mutex); |
706 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
707 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
0b4c0f3f DA |
708 | ret = crtc->funcs->set_config(&fb_helper->crtc_info[i].mode_set); |
709 | if (ret) { | |
785b93ef | 710 | mutex_unlock(&dev->mode_config.mutex); |
0b4c0f3f | 711 | return ret; |
785b93ef DA |
712 | } |
713 | } | |
8be48d92 | 714 | mutex_unlock(&dev->mode_config.mutex); |
4abe3520 DA |
715 | |
716 | if (fb_helper->delayed_hotplug) { | |
717 | fb_helper->delayed_hotplug = false; | |
eb1f8e4f | 718 | drm_fb_helper_hotplug_event(fb_helper); |
4abe3520 | 719 | } |
785b93ef DA |
720 | return 0; |
721 | } | |
722 | EXPORT_SYMBOL(drm_fb_helper_set_par); | |
723 | ||
724 | int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, | |
725 | struct fb_info *info) | |
726 | { | |
727 | struct drm_fb_helper *fb_helper = info->par; | |
728 | struct drm_device *dev = fb_helper->dev; | |
729 | struct drm_mode_set *modeset; | |
730 | struct drm_crtc *crtc; | |
731 | int ret = 0; | |
732 | int i; | |
733 | ||
8be48d92 DA |
734 | mutex_lock(&dev->mode_config.mutex); |
735 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
736 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
785b93ef DA |
737 | |
738 | modeset = &fb_helper->crtc_info[i].mode_set; | |
739 | ||
740 | modeset->x = var->xoffset; | |
741 | modeset->y = var->yoffset; | |
742 | ||
743 | if (modeset->num_connectors) { | |
785b93ef | 744 | ret = crtc->funcs->set_config(modeset); |
785b93ef DA |
745 | if (!ret) { |
746 | info->var.xoffset = var->xoffset; | |
747 | info->var.yoffset = var->yoffset; | |
748 | } | |
749 | } | |
750 | } | |
8be48d92 | 751 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
752 | return ret; |
753 | } | |
754 | EXPORT_SYMBOL(drm_fb_helper_pan_display); | |
755 | ||
8be48d92 DA |
756 | int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, |
757 | int preferred_bpp) | |
785b93ef | 758 | { |
785b93ef DA |
759 | int new_fb = 0; |
760 | int crtc_count = 0; | |
4abe3520 | 761 | int i; |
785b93ef | 762 | struct fb_info *info; |
38651674 | 763 | struct drm_fb_helper_surface_size sizes; |
8be48d92 | 764 | int gamma_size = 0; |
38651674 DA |
765 | |
766 | memset(&sizes, 0, sizeof(struct drm_fb_helper_surface_size)); | |
767 | sizes.surface_depth = 24; | |
768 | sizes.surface_bpp = 32; | |
769 | sizes.fb_width = (unsigned)-1; | |
770 | sizes.fb_height = (unsigned)-1; | |
785b93ef | 771 | |
b8c00ac5 DA |
772 | /* if driver picks 8 or 16 by default use that |
773 | for both depth/bpp */ | |
38651674 DA |
774 | if (preferred_bpp != sizes.surface_bpp) { |
775 | sizes.surface_depth = sizes.surface_bpp = preferred_bpp; | |
b8c00ac5 | 776 | } |
785b93ef | 777 | /* first up get a count of crtcs now in use and new min/maxes width/heights */ |
0b4c0f3f DA |
778 | for (i = 0; i < fb_helper->connector_count; i++) { |
779 | struct drm_fb_helper_connector *fb_helper_conn = fb_helper->connector_info[i]; | |
1794d257 | 780 | struct drm_cmdline_mode *cmdline_mode; |
8ef8678c | 781 | |
0b4c0f3f | 782 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
d50ba256 DA |
783 | |
784 | if (cmdline_mode->bpp_specified) { | |
785 | switch (cmdline_mode->bpp) { | |
786 | case 8: | |
38651674 | 787 | sizes.surface_depth = sizes.surface_bpp = 8; |
d50ba256 DA |
788 | break; |
789 | case 15: | |
38651674 DA |
790 | sizes.surface_depth = 15; |
791 | sizes.surface_bpp = 16; | |
d50ba256 DA |
792 | break; |
793 | case 16: | |
38651674 | 794 | sizes.surface_depth = sizes.surface_bpp = 16; |
d50ba256 DA |
795 | break; |
796 | case 24: | |
38651674 | 797 | sizes.surface_depth = sizes.surface_bpp = 24; |
d50ba256 DA |
798 | break; |
799 | case 32: | |
38651674 DA |
800 | sizes.surface_depth = 24; |
801 | sizes.surface_bpp = 32; | |
d50ba256 DA |
802 | break; |
803 | } | |
804 | break; | |
805 | } | |
806 | } | |
807 | ||
8be48d92 DA |
808 | crtc_count = 0; |
809 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
810 | struct drm_display_mode *desired_mode; | |
811 | desired_mode = fb_helper->crtc_info[i].desired_mode; | |
812 | ||
813 | if (desired_mode) { | |
814 | if (gamma_size == 0) | |
815 | gamma_size = fb_helper->crtc_info[i].mode_set.crtc->gamma_size; | |
816 | if (desired_mode->hdisplay < sizes.fb_width) | |
817 | sizes.fb_width = desired_mode->hdisplay; | |
818 | if (desired_mode->vdisplay < sizes.fb_height) | |
819 | sizes.fb_height = desired_mode->vdisplay; | |
820 | if (desired_mode->hdisplay > sizes.surface_width) | |
821 | sizes.surface_width = desired_mode->hdisplay; | |
822 | if (desired_mode->vdisplay > sizes.surface_height) | |
823 | sizes.surface_height = desired_mode->vdisplay; | |
785b93ef DA |
824 | crtc_count++; |
825 | } | |
826 | } | |
827 | ||
38651674 | 828 | if (crtc_count == 0 || sizes.fb_width == -1 || sizes.fb_height == -1) { |
785b93ef DA |
829 | /* hmm everyone went away - assume VGA cable just fell out |
830 | and will come back later. */ | |
eb1f8e4f | 831 | DRM_INFO("Cannot find any crtc or sizes - going 1024x768\n"); |
19b4b445 DA |
832 | sizes.fb_width = sizes.surface_width = 1024; |
833 | sizes.fb_height = sizes.surface_height = 768; | |
785b93ef DA |
834 | } |
835 | ||
38651674 | 836 | /* push down into drivers */ |
4abe3520 | 837 | new_fb = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes); |
38651674 DA |
838 | if (new_fb < 0) |
839 | return new_fb; | |
785b93ef | 840 | |
38651674 | 841 | info = fb_helper->fbdev; |
785b93ef | 842 | |
8be48d92 DA |
843 | /* set the fb pointer */ |
844 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
845 | fb_helper->crtc_info[i].mode_set.fb = fb_helper->fb; | |
785b93ef | 846 | } |
785b93ef DA |
847 | |
848 | if (new_fb) { | |
5349ef31 | 849 | info->var.pixclock = 0; |
3bea21b6 | 850 | if (register_framebuffer(info) < 0) { |
785b93ef | 851 | return -EINVAL; |
3bea21b6 | 852 | } |
38651674 DA |
853 | |
854 | printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, | |
855 | info->fix.id); | |
856 | ||
785b93ef DA |
857 | } else { |
858 | drm_fb_helper_set_par(info); | |
859 | } | |
785b93ef DA |
860 | |
861 | /* Switch back to kernel console on panic */ | |
862 | /* multi card linked list maybe */ | |
863 | if (list_empty(&kernel_fb_helper_list)) { | |
3da1f33e | 864 | printk(KERN_INFO "drm: registered panic notifier\n"); |
785b93ef DA |
865 | atomic_notifier_chain_register(&panic_notifier_list, |
866 | &paniced); | |
867 | register_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
868 | } | |
38651674 DA |
869 | if (new_fb) |
870 | list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list); | |
871 | ||
785b93ef DA |
872 | return 0; |
873 | } | |
874 | EXPORT_SYMBOL(drm_fb_helper_single_fb_probe); | |
875 | ||
3632ef89 DA |
876 | void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, |
877 | uint32_t depth) | |
878 | { | |
879 | info->fix.type = FB_TYPE_PACKED_PIXELS; | |
880 | info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR : | |
881 | FB_VISUAL_TRUECOLOR; | |
882 | info->fix.mmio_start = 0; | |
883 | info->fix.mmio_len = 0; | |
884 | info->fix.type_aux = 0; | |
885 | info->fix.xpanstep = 1; /* doing it in hw */ | |
886 | info->fix.ypanstep = 1; /* doing it in hw */ | |
887 | info->fix.ywrapstep = 0; | |
888 | info->fix.accel = FB_ACCEL_NONE; | |
889 | info->fix.type_aux = 0; | |
890 | ||
891 | info->fix.line_length = pitch; | |
892 | return; | |
893 | } | |
894 | EXPORT_SYMBOL(drm_fb_helper_fill_fix); | |
895 | ||
38651674 | 896 | void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, |
785b93ef DA |
897 | uint32_t fb_width, uint32_t fb_height) |
898 | { | |
38651674 DA |
899 | struct drm_framebuffer *fb = fb_helper->fb; |
900 | info->pseudo_palette = fb_helper->pseudo_palette; | |
785b93ef DA |
901 | info->var.xres_virtual = fb->width; |
902 | info->var.yres_virtual = fb->height; | |
903 | info->var.bits_per_pixel = fb->bits_per_pixel; | |
57084d05 | 904 | info->var.accel_flags = FB_ACCELF_TEXT; |
785b93ef DA |
905 | info->var.xoffset = 0; |
906 | info->var.yoffset = 0; | |
907 | info->var.activate = FB_ACTIVATE_NOW; | |
908 | info->var.height = -1; | |
909 | info->var.width = -1; | |
910 | ||
911 | switch (fb->depth) { | |
912 | case 8: | |
913 | info->var.red.offset = 0; | |
914 | info->var.green.offset = 0; | |
915 | info->var.blue.offset = 0; | |
916 | info->var.red.length = 8; /* 8bit DAC */ | |
917 | info->var.green.length = 8; | |
918 | info->var.blue.length = 8; | |
919 | info->var.transp.offset = 0; | |
920 | info->var.transp.length = 0; | |
921 | break; | |
922 | case 15: | |
923 | info->var.red.offset = 10; | |
924 | info->var.green.offset = 5; | |
925 | info->var.blue.offset = 0; | |
926 | info->var.red.length = 5; | |
927 | info->var.green.length = 5; | |
928 | info->var.blue.length = 5; | |
929 | info->var.transp.offset = 15; | |
930 | info->var.transp.length = 1; | |
931 | break; | |
932 | case 16: | |
933 | info->var.red.offset = 11; | |
934 | info->var.green.offset = 5; | |
935 | info->var.blue.offset = 0; | |
936 | info->var.red.length = 5; | |
937 | info->var.green.length = 6; | |
938 | info->var.blue.length = 5; | |
939 | info->var.transp.offset = 0; | |
940 | break; | |
941 | case 24: | |
942 | info->var.red.offset = 16; | |
943 | info->var.green.offset = 8; | |
944 | info->var.blue.offset = 0; | |
945 | info->var.red.length = 8; | |
946 | info->var.green.length = 8; | |
947 | info->var.blue.length = 8; | |
948 | info->var.transp.offset = 0; | |
949 | info->var.transp.length = 0; | |
950 | break; | |
951 | case 32: | |
952 | info->var.red.offset = 16; | |
953 | info->var.green.offset = 8; | |
954 | info->var.blue.offset = 0; | |
955 | info->var.red.length = 8; | |
956 | info->var.green.length = 8; | |
957 | info->var.blue.length = 8; | |
958 | info->var.transp.offset = 24; | |
959 | info->var.transp.length = 8; | |
960 | break; | |
961 | default: | |
962 | break; | |
963 | } | |
964 | ||
965 | info->var.xres = fb_width; | |
966 | info->var.yres = fb_height; | |
967 | } | |
968 | EXPORT_SYMBOL(drm_fb_helper_fill_var); | |
38651674 | 969 | |
0b4c0f3f DA |
970 | static int drm_fb_helper_probe_connector_modes(struct drm_fb_helper *fb_helper, |
971 | uint32_t maxX, | |
972 | uint32_t maxY) | |
38651674 DA |
973 | { |
974 | struct drm_connector *connector; | |
975 | int count = 0; | |
0b4c0f3f | 976 | int i; |
38651674 | 977 | |
0b4c0f3f DA |
978 | for (i = 0; i < fb_helper->connector_count; i++) { |
979 | connector = fb_helper->connector_info[i]->connector; | |
38651674 DA |
980 | count += connector->funcs->fill_modes(connector, maxX, maxY); |
981 | } | |
982 | ||
983 | return count; | |
984 | } | |
985 | ||
0b4c0f3f | 986 | static struct drm_display_mode *drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, int width, int height) |
38651674 DA |
987 | { |
988 | struct drm_display_mode *mode; | |
989 | ||
0b4c0f3f | 990 | list_for_each_entry(mode, &fb_connector->connector->modes, head) { |
38651674 DA |
991 | if (drm_mode_width(mode) > width || |
992 | drm_mode_height(mode) > height) | |
993 | continue; | |
994 | if (mode->type & DRM_MODE_TYPE_PREFERRED) | |
995 | return mode; | |
996 | } | |
997 | return NULL; | |
998 | } | |
999 | ||
0b4c0f3f | 1000 | static bool drm_has_cmdline_mode(struct drm_fb_helper_connector *fb_connector) |
38651674 | 1001 | { |
1794d257 | 1002 | struct drm_cmdline_mode *cmdline_mode; |
0b4c0f3f | 1003 | cmdline_mode = &fb_connector->cmdline_mode; |
38651674 DA |
1004 | return cmdline_mode->specified; |
1005 | } | |
1006 | ||
0b4c0f3f DA |
1007 | static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn, |
1008 | int width, int height) | |
38651674 | 1009 | { |
1794d257 | 1010 | struct drm_cmdline_mode *cmdline_mode; |
38651674 DA |
1011 | struct drm_display_mode *mode = NULL; |
1012 | ||
0b4c0f3f | 1013 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
38651674 DA |
1014 | if (cmdline_mode->specified == false) |
1015 | return mode; | |
1016 | ||
1017 | /* attempt to find a matching mode in the list of modes | |
1018 | * we have gotten so far, if not add a CVT mode that conforms | |
1019 | */ | |
1020 | if (cmdline_mode->rb || cmdline_mode->margins) | |
1021 | goto create_mode; | |
1022 | ||
0b4c0f3f | 1023 | list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { |
38651674 DA |
1024 | /* check width/height */ |
1025 | if (mode->hdisplay != cmdline_mode->xres || | |
1026 | mode->vdisplay != cmdline_mode->yres) | |
1027 | continue; | |
1028 | ||
1029 | if (cmdline_mode->refresh_specified) { | |
1030 | if (mode->vrefresh != cmdline_mode->refresh) | |
1031 | continue; | |
1032 | } | |
1033 | ||
1034 | if (cmdline_mode->interlace) { | |
1035 | if (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) | |
1036 | continue; | |
1037 | } | |
1038 | return mode; | |
1039 | } | |
1040 | ||
1041 | create_mode: | |
1794d257 CW |
1042 | mode = drm_mode_create_from_cmdline_mode(fb_helper_conn->connector->dev, |
1043 | cmdline_mode); | |
0b4c0f3f | 1044 | list_add(&mode->head, &fb_helper_conn->connector->modes); |
38651674 DA |
1045 | return mode; |
1046 | } | |
1047 | ||
1048 | static bool drm_connector_enabled(struct drm_connector *connector, bool strict) | |
1049 | { | |
1050 | bool enable; | |
1051 | ||
1052 | if (strict) { | |
1053 | enable = connector->status == connector_status_connected; | |
1054 | } else { | |
1055 | enable = connector->status != connector_status_disconnected; | |
1056 | } | |
1057 | return enable; | |
1058 | } | |
1059 | ||
0b4c0f3f DA |
1060 | static void drm_enable_connectors(struct drm_fb_helper *fb_helper, |
1061 | bool *enabled) | |
38651674 DA |
1062 | { |
1063 | bool any_enabled = false; | |
1064 | struct drm_connector *connector; | |
1065 | int i = 0; | |
1066 | ||
0b4c0f3f DA |
1067 | for (i = 0; i < fb_helper->connector_count; i++) { |
1068 | connector = fb_helper->connector_info[i]->connector; | |
38651674 DA |
1069 | enabled[i] = drm_connector_enabled(connector, true); |
1070 | DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, | |
1071 | enabled[i] ? "yes" : "no"); | |
1072 | any_enabled |= enabled[i]; | |
38651674 DA |
1073 | } |
1074 | ||
1075 | if (any_enabled) | |
1076 | return; | |
1077 | ||
0b4c0f3f DA |
1078 | for (i = 0; i < fb_helper->connector_count; i++) { |
1079 | connector = fb_helper->connector_info[i]->connector; | |
38651674 | 1080 | enabled[i] = drm_connector_enabled(connector, false); |
38651674 DA |
1081 | } |
1082 | } | |
1083 | ||
1d42bbc8 DA |
1084 | static bool drm_target_cloned(struct drm_fb_helper *fb_helper, |
1085 | struct drm_display_mode **modes, | |
1086 | bool *enabled, int width, int height) | |
1087 | { | |
1088 | int count, i, j; | |
1089 | bool can_clone = false; | |
1090 | struct drm_fb_helper_connector *fb_helper_conn; | |
1091 | struct drm_display_mode *dmt_mode, *mode; | |
1092 | ||
1093 | /* only contemplate cloning in the single crtc case */ | |
1094 | if (fb_helper->crtc_count > 1) | |
1095 | return false; | |
1096 | ||
1097 | count = 0; | |
1098 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1099 | if (enabled[i]) | |
1100 | count++; | |
1101 | } | |
1102 | ||
1103 | /* only contemplate cloning if more than one connector is enabled */ | |
1104 | if (count <= 1) | |
1105 | return false; | |
1106 | ||
1107 | /* check the command line or if nothing common pick 1024x768 */ | |
1108 | can_clone = true; | |
1109 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1110 | if (!enabled[i]) | |
1111 | continue; | |
1112 | fb_helper_conn = fb_helper->connector_info[i]; | |
1113 | modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); | |
1114 | if (!modes[i]) { | |
1115 | can_clone = false; | |
1116 | break; | |
1117 | } | |
1118 | for (j = 0; j < i; j++) { | |
1119 | if (!enabled[j]) | |
1120 | continue; | |
1121 | if (!drm_mode_equal(modes[j], modes[i])) | |
1122 | can_clone = false; | |
1123 | } | |
1124 | } | |
1125 | ||
1126 | if (can_clone) { | |
1127 | DRM_DEBUG_KMS("can clone using command line\n"); | |
1128 | return true; | |
1129 | } | |
1130 | ||
1131 | /* try and find a 1024x768 mode on each connector */ | |
1132 | can_clone = true; | |
1133 | dmt_mode = drm_mode_find_dmt(fb_helper->dev, 1024, 768, 60); | |
1134 | ||
1135 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1136 | ||
1137 | if (!enabled[i]) | |
1138 | continue; | |
1139 | ||
1140 | fb_helper_conn = fb_helper->connector_info[i]; | |
1141 | list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { | |
1142 | if (drm_mode_equal(mode, dmt_mode)) | |
1143 | modes[i] = mode; | |
1144 | } | |
1145 | if (!modes[i]) | |
1146 | can_clone = false; | |
1147 | } | |
1148 | ||
1149 | if (can_clone) { | |
1150 | DRM_DEBUG_KMS("can clone using 1024x768\n"); | |
1151 | return true; | |
1152 | } | |
1153 | DRM_INFO("kms: can't enable cloning when we probably wanted to.\n"); | |
1154 | return false; | |
1155 | } | |
1156 | ||
0b4c0f3f | 1157 | static bool drm_target_preferred(struct drm_fb_helper *fb_helper, |
38651674 DA |
1158 | struct drm_display_mode **modes, |
1159 | bool *enabled, int width, int height) | |
1160 | { | |
0b4c0f3f DA |
1161 | struct drm_fb_helper_connector *fb_helper_conn; |
1162 | int i; | |
38651674 | 1163 | |
0b4c0f3f DA |
1164 | for (i = 0; i < fb_helper->connector_count; i++) { |
1165 | fb_helper_conn = fb_helper->connector_info[i]; | |
38651674 | 1166 | |
0b4c0f3f | 1167 | if (enabled[i] == false) |
38651674 | 1168 | continue; |
38651674 DA |
1169 | |
1170 | DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n", | |
0b4c0f3f | 1171 | fb_helper_conn->connector->base.id); |
38651674 DA |
1172 | |
1173 | /* got for command line mode first */ | |
0b4c0f3f | 1174 | modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); |
38651674 DA |
1175 | if (!modes[i]) { |
1176 | DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", | |
0b4c0f3f DA |
1177 | fb_helper_conn->connector->base.id); |
1178 | modes[i] = drm_has_preferred_mode(fb_helper_conn, width, height); | |
38651674 DA |
1179 | } |
1180 | /* No preferred modes, pick one off the list */ | |
0b4c0f3f DA |
1181 | if (!modes[i] && !list_empty(&fb_helper_conn->connector->modes)) { |
1182 | list_for_each_entry(modes[i], &fb_helper_conn->connector->modes, head) | |
38651674 DA |
1183 | break; |
1184 | } | |
1185 | DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : | |
1186 | "none"); | |
38651674 DA |
1187 | } |
1188 | return true; | |
1189 | } | |
1190 | ||
8be48d92 DA |
1191 | static int drm_pick_crtcs(struct drm_fb_helper *fb_helper, |
1192 | struct drm_fb_helper_crtc **best_crtcs, | |
38651674 DA |
1193 | struct drm_display_mode **modes, |
1194 | int n, int width, int height) | |
1195 | { | |
1196 | int c, o; | |
8be48d92 | 1197 | struct drm_device *dev = fb_helper->dev; |
38651674 DA |
1198 | struct drm_connector *connector; |
1199 | struct drm_connector_helper_funcs *connector_funcs; | |
1200 | struct drm_encoder *encoder; | |
8be48d92 | 1201 | struct drm_fb_helper_crtc *best_crtc; |
38651674 | 1202 | int my_score, best_score, score; |
8be48d92 | 1203 | struct drm_fb_helper_crtc **crtcs, *crtc; |
0b4c0f3f | 1204 | struct drm_fb_helper_connector *fb_helper_conn; |
38651674 | 1205 | |
0b4c0f3f | 1206 | if (n == fb_helper->connector_count) |
38651674 | 1207 | return 0; |
0b4c0f3f DA |
1208 | |
1209 | fb_helper_conn = fb_helper->connector_info[n]; | |
1210 | connector = fb_helper_conn->connector; | |
38651674 DA |
1211 | |
1212 | best_crtcs[n] = NULL; | |
1213 | best_crtc = NULL; | |
8be48d92 | 1214 | best_score = drm_pick_crtcs(fb_helper, best_crtcs, modes, n+1, width, height); |
38651674 DA |
1215 | if (modes[n] == NULL) |
1216 | return best_score; | |
1217 | ||
8be48d92 DA |
1218 | crtcs = kzalloc(dev->mode_config.num_connector * |
1219 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); | |
38651674 DA |
1220 | if (!crtcs) |
1221 | return best_score; | |
1222 | ||
1223 | my_score = 1; | |
1224 | if (connector->status == connector_status_connected) | |
1225 | my_score++; | |
0b4c0f3f | 1226 | if (drm_has_cmdline_mode(fb_helper_conn)) |
38651674 | 1227 | my_score++; |
0b4c0f3f | 1228 | if (drm_has_preferred_mode(fb_helper_conn, width, height)) |
38651674 DA |
1229 | my_score++; |
1230 | ||
1231 | connector_funcs = connector->helper_private; | |
1232 | encoder = connector_funcs->best_encoder(connector); | |
1233 | if (!encoder) | |
1234 | goto out; | |
1235 | ||
38651674 DA |
1236 | /* select a crtc for this connector and then attempt to configure |
1237 | remaining connectors */ | |
8be48d92 DA |
1238 | for (c = 0; c < fb_helper->crtc_count; c++) { |
1239 | crtc = &fb_helper->crtc_info[c]; | |
38651674 DA |
1240 | |
1241 | if ((encoder->possible_crtcs & (1 << c)) == 0) { | |
38651674 DA |
1242 | continue; |
1243 | } | |
1244 | ||
1245 | for (o = 0; o < n; o++) | |
1246 | if (best_crtcs[o] == crtc) | |
1247 | break; | |
1248 | ||
1249 | if (o < n) { | |
1d42bbc8 DA |
1250 | /* ignore cloning unless only a single crtc */ |
1251 | if (fb_helper->crtc_count > 1) | |
1252 | continue; | |
1253 | ||
1254 | if (!drm_mode_equal(modes[o], modes[n])) | |
1255 | continue; | |
38651674 DA |
1256 | } |
1257 | ||
1258 | crtcs[n] = crtc; | |
8be48d92 DA |
1259 | memcpy(crtcs, best_crtcs, n * sizeof(struct drm_fb_helper_crtc *)); |
1260 | score = my_score + drm_pick_crtcs(fb_helper, crtcs, modes, n + 1, | |
38651674 DA |
1261 | width, height); |
1262 | if (score > best_score) { | |
1263 | best_crtc = crtc; | |
1264 | best_score = score; | |
1265 | memcpy(best_crtcs, crtcs, | |
1266 | dev->mode_config.num_connector * | |
8be48d92 | 1267 | sizeof(struct drm_fb_helper_crtc *)); |
38651674 | 1268 | } |
38651674 DA |
1269 | } |
1270 | out: | |
1271 | kfree(crtcs); | |
1272 | return best_score; | |
1273 | } | |
1274 | ||
8be48d92 | 1275 | static void drm_setup_crtcs(struct drm_fb_helper *fb_helper) |
38651674 | 1276 | { |
8be48d92 DA |
1277 | struct drm_device *dev = fb_helper->dev; |
1278 | struct drm_fb_helper_crtc **crtcs; | |
38651674 DA |
1279 | struct drm_display_mode **modes; |
1280 | struct drm_encoder *encoder; | |
8be48d92 | 1281 | struct drm_mode_set *modeset; |
38651674 DA |
1282 | bool *enabled; |
1283 | int width, height; | |
1284 | int i, ret; | |
1285 | ||
1286 | DRM_DEBUG_KMS("\n"); | |
1287 | ||
1288 | width = dev->mode_config.max_width; | |
1289 | height = dev->mode_config.max_height; | |
1290 | ||
1291 | /* clean out all the encoder/crtc combos */ | |
1292 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
1293 | encoder->crtc = NULL; | |
1294 | } | |
1295 | ||
1296 | crtcs = kcalloc(dev->mode_config.num_connector, | |
8be48d92 | 1297 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); |
38651674 DA |
1298 | modes = kcalloc(dev->mode_config.num_connector, |
1299 | sizeof(struct drm_display_mode *), GFP_KERNEL); | |
1300 | enabled = kcalloc(dev->mode_config.num_connector, | |
1301 | sizeof(bool), GFP_KERNEL); | |
1302 | ||
0b4c0f3f | 1303 | drm_enable_connectors(fb_helper, enabled); |
38651674 | 1304 | |
1d42bbc8 DA |
1305 | ret = drm_target_cloned(fb_helper, modes, enabled, width, height); |
1306 | if (!ret) { | |
1307 | ret = drm_target_preferred(fb_helper, modes, enabled, width, height); | |
1308 | if (!ret) | |
1309 | DRM_ERROR("Unable to find initial modes\n"); | |
1310 | } | |
38651674 DA |
1311 | |
1312 | DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height); | |
1313 | ||
8be48d92 DA |
1314 | drm_pick_crtcs(fb_helper, crtcs, modes, 0, width, height); |
1315 | ||
1316 | /* need to set the modesets up here for use later */ | |
1317 | /* fill out the connector<->crtc mappings into the modesets */ | |
1318 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
1319 | modeset = &fb_helper->crtc_info[i].mode_set; | |
1320 | modeset->num_connectors = 0; | |
1321 | } | |
38651674 | 1322 | |
0b4c0f3f | 1323 | for (i = 0; i < fb_helper->connector_count; i++) { |
38651674 | 1324 | struct drm_display_mode *mode = modes[i]; |
8be48d92 DA |
1325 | struct drm_fb_helper_crtc *fb_crtc = crtcs[i]; |
1326 | modeset = &fb_crtc->mode_set; | |
38651674 | 1327 | |
8be48d92 | 1328 | if (mode && fb_crtc) { |
38651674 | 1329 | DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", |
8be48d92 DA |
1330 | mode->name, fb_crtc->mode_set.crtc->base.id); |
1331 | fb_crtc->desired_mode = mode; | |
1332 | if (modeset->mode) | |
1333 | drm_mode_destroy(dev, modeset->mode); | |
1334 | modeset->mode = drm_mode_duplicate(dev, | |
1335 | fb_crtc->desired_mode); | |
0b4c0f3f | 1336 | modeset->connectors[modeset->num_connectors++] = fb_helper->connector_info[i]->connector; |
38651674 | 1337 | } |
38651674 DA |
1338 | } |
1339 | ||
1340 | kfree(crtcs); | |
1341 | kfree(modes); | |
1342 | kfree(enabled); | |
1343 | } | |
1344 | ||
1345 | /** | |
1346 | * drm_helper_initial_config - setup a sane initial connector configuration | |
1347 | * @dev: DRM device | |
1348 | * | |
1349 | * LOCKING: | |
1350 | * Called at init time, must take mode config lock. | |
1351 | * | |
1352 | * Scan the CRTCs and connectors and try to put together an initial setup. | |
1353 | * At the moment, this is a cloned configuration across all heads with | |
1354 | * a new framebuffer object as the backing store. | |
1355 | * | |
1356 | * RETURNS: | |
1357 | * Zero if everything went ok, nonzero otherwise. | |
1358 | */ | |
4abe3520 | 1359 | bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel) |
38651674 | 1360 | { |
8be48d92 | 1361 | struct drm_device *dev = fb_helper->dev; |
38651674 DA |
1362 | int count = 0; |
1363 | ||
1364 | /* disable all the possible outputs/crtcs before entering KMS mode */ | |
8be48d92 | 1365 | drm_helper_disable_unused_functions(fb_helper->dev); |
38651674 | 1366 | |
0b4c0f3f | 1367 | drm_fb_helper_parse_command_line(fb_helper); |
38651674 | 1368 | |
0b4c0f3f DA |
1369 | count = drm_fb_helper_probe_connector_modes(fb_helper, |
1370 | dev->mode_config.max_width, | |
1371 | dev->mode_config.max_height); | |
38651674 DA |
1372 | /* |
1373 | * we shouldn't end up with no modes here. | |
1374 | */ | |
5c4426a7 | 1375 | if (count == 0) { |
eb1f8e4f | 1376 | printk(KERN_INFO "No connectors reported connected with modes\n"); |
5c4426a7 | 1377 | } |
8be48d92 | 1378 | drm_setup_crtcs(fb_helper); |
38651674 | 1379 | |
4abe3520 | 1380 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
38651674 | 1381 | } |
8be48d92 | 1382 | EXPORT_SYMBOL(drm_fb_helper_initial_config); |
38651674 | 1383 | |
7394371d CW |
1384 | /** |
1385 | * drm_fb_helper_hotplug_event - respond to a hotplug notification by | |
1386 | * probing all the outputs attached to the fb. | |
1387 | * @fb_helper: the drm_fb_helper | |
1388 | * | |
1389 | * LOCKING: | |
1390 | * Called at runtime, must take mode config lock. | |
1391 | * | |
1392 | * Scan the connectors attached to the fb_helper and try to put together a | |
1393 | * setup after *notification of a change in output configuration. | |
1394 | * | |
1395 | * RETURNS: | |
1396 | * 0 on success and a non-zero error code otherwise. | |
1397 | */ | |
1398 | int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper) | |
38651674 | 1399 | { |
7394371d | 1400 | struct drm_device *dev = fb_helper->dev; |
5c4426a7 | 1401 | int count = 0; |
4abe3520 | 1402 | u32 max_width, max_height, bpp_sel; |
4abe3520 DA |
1403 | bool bound = false, crtcs_bound = false; |
1404 | struct drm_crtc *crtc; | |
5c4426a7 | 1405 | |
eb1f8e4f | 1406 | if (!fb_helper->fb) |
7394371d | 1407 | return 0; |
4abe3520 | 1408 | |
7394371d CW |
1409 | mutex_lock(&dev->mode_config.mutex); |
1410 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
4abe3520 DA |
1411 | if (crtc->fb) |
1412 | crtcs_bound = true; | |
1413 | if (crtc->fb == fb_helper->fb) | |
1414 | bound = true; | |
1415 | } | |
1416 | ||
eb1f8e4f | 1417 | if (!bound && crtcs_bound) { |
4abe3520 | 1418 | fb_helper->delayed_hotplug = true; |
7394371d CW |
1419 | mutex_unlock(&dev->mode_config.mutex); |
1420 | return 0; | |
4abe3520 | 1421 | } |
eb1f8e4f | 1422 | DRM_DEBUG_KMS("\n"); |
4abe3520 | 1423 | |
eb1f8e4f DA |
1424 | max_width = fb_helper->fb->width; |
1425 | max_height = fb_helper->fb->height; | |
1426 | bpp_sel = fb_helper->fb->bits_per_pixel; | |
5c4426a7 | 1427 | |
eb1f8e4f DA |
1428 | count = drm_fb_helper_probe_connector_modes(fb_helper, max_width, |
1429 | max_height); | |
1430 | drm_setup_crtcs(fb_helper); | |
7394371d | 1431 | mutex_unlock(&dev->mode_config.mutex); |
4abe3520 | 1432 | |
eb1f8e4f | 1433 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
5c4426a7 | 1434 | } |
eb1f8e4f | 1435 | EXPORT_SYMBOL(drm_fb_helper_hotplug_event); |
5c4426a7 | 1436 | |
6a108a14 | 1437 | /* The Kconfig DRM_KMS_HELPER selects FRAMEBUFFER_CONSOLE (if !EXPERT) |
3ce05168 DF |
1438 | * but the module doesn't depend on any fb console symbols. At least |
1439 | * attempt to load fbcon to avoid leaving the system without a usable console. | |
1440 | */ | |
6a108a14 | 1441 | #if defined(CONFIG_FRAMEBUFFER_CONSOLE_MODULE) && !defined(CONFIG_EXPERT) |
3ce05168 DF |
1442 | static int __init drm_fb_helper_modinit(void) |
1443 | { | |
1444 | const char *name = "fbcon"; | |
1445 | struct module *fbcon; | |
1446 | ||
1447 | mutex_lock(&module_mutex); | |
1448 | fbcon = find_module(name); | |
1449 | mutex_unlock(&module_mutex); | |
1450 | ||
1451 | if (!fbcon) | |
1452 | request_module_nowait(name); | |
1453 | return 0; | |
1454 | } | |
1455 | ||
1456 | module_init(drm_fb_helper_modinit); | |
1457 | #endif |