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> |
760285e7 DH |
35 | #include <drm/drmP.h> |
36 | #include <drm/drm_crtc.h> | |
37 | #include <drm/drm_fb_helper.h> | |
38 | #include <drm/drm_crtc_helper.h> | |
785b93ef | 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 | ||
ebe0f244 LP |
139 | if (crtc->funcs->gamma_set == NULL) |
140 | return; | |
141 | ||
99231028 JW |
142 | r_base = crtc->gamma_store; |
143 | g_base = r_base + crtc->gamma_size; | |
144 | b_base = g_base + crtc->gamma_size; | |
145 | ||
146 | crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size); | |
147 | } | |
148 | ||
1a7aba7f JB |
149 | int drm_fb_helper_debug_enter(struct fb_info *info) |
150 | { | |
151 | struct drm_fb_helper *helper = info->par; | |
152 | struct drm_crtc_helper_funcs *funcs; | |
153 | int i; | |
154 | ||
155 | if (list_empty(&kernel_fb_helper_list)) | |
156 | return false; | |
157 | ||
158 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { | |
159 | for (i = 0; i < helper->crtc_count; i++) { | |
160 | struct drm_mode_set *mode_set = | |
161 | &helper->crtc_info[i].mode_set; | |
162 | ||
163 | if (!mode_set->crtc->enabled) | |
164 | continue; | |
165 | ||
166 | funcs = mode_set->crtc->helper_private; | |
99231028 | 167 | drm_fb_helper_save_lut_atomic(mode_set->crtc, helper); |
1a7aba7f JB |
168 | funcs->mode_set_base_atomic(mode_set->crtc, |
169 | mode_set->fb, | |
170 | mode_set->x, | |
413d45d3 | 171 | mode_set->y, |
21c74a8e | 172 | ENTER_ATOMIC_MODE_SET); |
1a7aba7f JB |
173 | } |
174 | } | |
175 | ||
176 | return 0; | |
177 | } | |
178 | EXPORT_SYMBOL(drm_fb_helper_debug_enter); | |
179 | ||
180 | /* Find the real fb for a given fb helper CRTC */ | |
181 | static struct drm_framebuffer *drm_mode_config_fb(struct drm_crtc *crtc) | |
182 | { | |
183 | struct drm_device *dev = crtc->dev; | |
184 | struct drm_crtc *c; | |
185 | ||
186 | list_for_each_entry(c, &dev->mode_config.crtc_list, head) { | |
187 | if (crtc->base.id == c->base.id) | |
188 | return c->fb; | |
189 | } | |
190 | ||
191 | return NULL; | |
192 | } | |
193 | ||
194 | int drm_fb_helper_debug_leave(struct fb_info *info) | |
195 | { | |
196 | struct drm_fb_helper *helper = info->par; | |
197 | struct drm_crtc *crtc; | |
198 | struct drm_crtc_helper_funcs *funcs; | |
199 | struct drm_framebuffer *fb; | |
200 | int i; | |
201 | ||
202 | for (i = 0; i < helper->crtc_count; i++) { | |
203 | struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set; | |
204 | crtc = mode_set->crtc; | |
205 | funcs = crtc->helper_private; | |
206 | fb = drm_mode_config_fb(crtc); | |
207 | ||
208 | if (!crtc->enabled) | |
209 | continue; | |
210 | ||
211 | if (!fb) { | |
212 | DRM_ERROR("no fb to restore??\n"); | |
213 | continue; | |
214 | } | |
215 | ||
99231028 | 216 | drm_fb_helper_restore_lut_atomic(mode_set->crtc); |
1a7aba7f | 217 | funcs->mode_set_base_atomic(mode_set->crtc, fb, crtc->x, |
21c74a8e | 218 | crtc->y, LEAVE_ATOMIC_MODE_SET); |
1a7aba7f JB |
219 | } |
220 | ||
221 | return 0; | |
222 | } | |
223 | EXPORT_SYMBOL(drm_fb_helper_debug_leave); | |
224 | ||
e8e7a2b8 DA |
225 | bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper) |
226 | { | |
227 | bool error = false; | |
228 | int i, ret; | |
229 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
230 | struct drm_mode_set *mode_set = &fb_helper->crtc_info[i].mode_set; | |
d3904754 | 231 | ret = mode_set->crtc->funcs->set_config(mode_set); |
e8e7a2b8 DA |
232 | if (ret) |
233 | error = true; | |
234 | } | |
235 | return error; | |
236 | } | |
237 | EXPORT_SYMBOL(drm_fb_helper_restore_fbdev_mode); | |
238 | ||
78b9c353 | 239 | static bool drm_fb_helper_force_kernel_mode(void) |
785b93ef | 240 | { |
785b93ef DA |
241 | bool ret, error = false; |
242 | struct drm_fb_helper *helper; | |
243 | ||
244 | if (list_empty(&kernel_fb_helper_list)) | |
245 | return false; | |
246 | ||
247 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { | |
e8e7a2b8 DA |
248 | if (helper->dev->switch_power_state == DRM_SWITCH_POWER_OFF) |
249 | continue; | |
250 | ||
251 | ret = drm_fb_helper_restore_fbdev_mode(helper); | |
252 | if (ret) | |
253 | error = true; | |
785b93ef DA |
254 | } |
255 | return error; | |
256 | } | |
257 | ||
258 | int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed, | |
259 | void *panic_str) | |
260 | { | |
d68752cf HD |
261 | /* |
262 | * It's a waste of time and effort to switch back to text console | |
263 | * if the kernel should reboot before panic messages can be seen. | |
264 | */ | |
265 | if (panic_timeout < 0) | |
266 | return 0; | |
267 | ||
fc2362af | 268 | printk(KERN_ERR "panic occurred, switching back to text console\n"); |
785b93ef | 269 | return drm_fb_helper_force_kernel_mode(); |
785b93ef DA |
270 | } |
271 | EXPORT_SYMBOL(drm_fb_helper_panic); | |
272 | ||
273 | static struct notifier_block paniced = { | |
274 | .notifier_call = drm_fb_helper_panic, | |
275 | }; | |
276 | ||
277 | /** | |
278 | * drm_fb_helper_restore - restore the framebuffer console (kernel) config | |
279 | * | |
280 | * Restore's the kernel's fbcon mode, used for lastclose & panic paths. | |
281 | */ | |
282 | void drm_fb_helper_restore(void) | |
283 | { | |
284 | bool ret; | |
285 | ret = drm_fb_helper_force_kernel_mode(); | |
286 | if (ret == true) | |
287 | DRM_ERROR("Failed to restore crtc configuration\n"); | |
288 | } | |
289 | EXPORT_SYMBOL(drm_fb_helper_restore); | |
290 | ||
bea1d35b | 291 | #ifdef CONFIG_MAGIC_SYSRQ |
785b93ef DA |
292 | static void drm_fb_helper_restore_work_fn(struct work_struct *ignored) |
293 | { | |
294 | drm_fb_helper_restore(); | |
295 | } | |
296 | static DECLARE_WORK(drm_fb_helper_restore_work, drm_fb_helper_restore_work_fn); | |
297 | ||
1495cc9d | 298 | static void drm_fb_helper_sysrq(int dummy1) |
785b93ef DA |
299 | { |
300 | schedule_work(&drm_fb_helper_restore_work); | |
301 | } | |
302 | ||
303 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { | |
304 | .handler = drm_fb_helper_sysrq, | |
305 | .help_msg = "force-fb(V)", | |
306 | .action_msg = "Restore framebuffer console", | |
307 | }; | |
b8c40d62 RD |
308 | #else |
309 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { }; | |
bea1d35b | 310 | #endif |
785b93ef | 311 | |
3a8148c5 | 312 | static void drm_fb_helper_dpms(struct fb_info *info, int dpms_mode) |
785b93ef DA |
313 | { |
314 | struct drm_fb_helper *fb_helper = info->par; | |
315 | struct drm_device *dev = fb_helper->dev; | |
316 | struct drm_crtc *crtc; | |
023eb571 | 317 | struct drm_connector *connector; |
023eb571 | 318 | int i, j; |
785b93ef DA |
319 | |
320 | /* | |
3a8148c5 | 321 | * For each CRTC in this fb, turn the connectors on/off. |
785b93ef | 322 | */ |
8be48d92 | 323 | mutex_lock(&dev->mode_config.mutex); |
e87b2c42 | 324 | for (i = 0; i < fb_helper->crtc_count; i++) { |
8be48d92 | 325 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
785b93ef | 326 | |
8be48d92 DA |
327 | if (!crtc->enabled) |
328 | continue; | |
329 | ||
3a8148c5 | 330 | /* Walk the connectors & encoders on this fb turning them on/off */ |
023eb571 JB |
331 | for (j = 0; j < fb_helper->connector_count; j++) { |
332 | connector = fb_helper->connector_info[j]->connector; | |
e04190e0 | 333 | connector->funcs->dpms(connector, dpms_mode); |
023eb571 | 334 | drm_connector_property_set_value(connector, |
3a8148c5 | 335 | dev->mode_config.dpms_property, dpms_mode); |
785b93ef | 336 | } |
785b93ef | 337 | } |
8be48d92 | 338 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
339 | } |
340 | ||
341 | int drm_fb_helper_blank(int blank, struct fb_info *info) | |
342 | { | |
343 | switch (blank) { | |
731b5a15 | 344 | /* Display: On; HSync: On, VSync: On */ |
785b93ef | 345 | case FB_BLANK_UNBLANK: |
3a8148c5 | 346 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_ON); |
785b93ef | 347 | break; |
731b5a15 | 348 | /* Display: Off; HSync: On, VSync: On */ |
785b93ef | 349 | case FB_BLANK_NORMAL: |
3a8148c5 | 350 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_STANDBY); |
785b93ef | 351 | break; |
731b5a15 | 352 | /* Display: Off; HSync: Off, VSync: On */ |
785b93ef | 353 | case FB_BLANK_HSYNC_SUSPEND: |
3a8148c5 | 354 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_STANDBY); |
785b93ef | 355 | break; |
731b5a15 | 356 | /* Display: Off; HSync: On, VSync: Off */ |
785b93ef | 357 | case FB_BLANK_VSYNC_SUSPEND: |
3a8148c5 | 358 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_SUSPEND); |
785b93ef | 359 | break; |
731b5a15 | 360 | /* Display: Off; HSync: Off, VSync: Off */ |
785b93ef | 361 | case FB_BLANK_POWERDOWN: |
3a8148c5 | 362 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_OFF); |
785b93ef DA |
363 | break; |
364 | } | |
365 | return 0; | |
366 | } | |
367 | EXPORT_SYMBOL(drm_fb_helper_blank); | |
368 | ||
369 | static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) | |
370 | { | |
371 | int i; | |
372 | ||
0b4c0f3f DA |
373 | for (i = 0; i < helper->connector_count; i++) |
374 | kfree(helper->connector_info[i]); | |
375 | kfree(helper->connector_info); | |
a1b7736d | 376 | for (i = 0; i < helper->crtc_count; i++) { |
785b93ef | 377 | kfree(helper->crtc_info[i].mode_set.connectors); |
a1b7736d SH |
378 | if (helper->crtc_info[i].mode_set.mode) |
379 | drm_mode_destroy(helper->dev, helper->crtc_info[i].mode_set.mode); | |
380 | } | |
785b93ef DA |
381 | kfree(helper->crtc_info); |
382 | } | |
383 | ||
4abe3520 DA |
384 | int drm_fb_helper_init(struct drm_device *dev, |
385 | struct drm_fb_helper *fb_helper, | |
eb1f8e4f | 386 | int crtc_count, int max_conn_count) |
785b93ef | 387 | { |
785b93ef | 388 | struct drm_crtc *crtc; |
785b93ef DA |
389 | int i; |
390 | ||
4abe3520 | 391 | fb_helper->dev = dev; |
4abe3520 DA |
392 | |
393 | INIT_LIST_HEAD(&fb_helper->kernel_fb_list); | |
394 | ||
395 | fb_helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL); | |
396 | if (!fb_helper->crtc_info) | |
785b93ef DA |
397 | return -ENOMEM; |
398 | ||
4abe3520 DA |
399 | fb_helper->crtc_count = crtc_count; |
400 | fb_helper->connector_info = kcalloc(dev->mode_config.num_connector, sizeof(struct drm_fb_helper_connector *), GFP_KERNEL); | |
401 | if (!fb_helper->connector_info) { | |
402 | kfree(fb_helper->crtc_info); | |
0b4c0f3f DA |
403 | return -ENOMEM; |
404 | } | |
4abe3520 | 405 | fb_helper->connector_count = 0; |
785b93ef DA |
406 | |
407 | for (i = 0; i < crtc_count; i++) { | |
4abe3520 | 408 | fb_helper->crtc_info[i].mode_set.connectors = |
785b93ef DA |
409 | kcalloc(max_conn_count, |
410 | sizeof(struct drm_connector *), | |
411 | GFP_KERNEL); | |
412 | ||
4a1b0714 | 413 | if (!fb_helper->crtc_info[i].mode_set.connectors) |
785b93ef | 414 | goto out_free; |
4abe3520 | 415 | fb_helper->crtc_info[i].mode_set.num_connectors = 0; |
785b93ef DA |
416 | } |
417 | ||
418 | i = 0; | |
419 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
4abe3520 | 420 | fb_helper->crtc_info[i].mode_set.crtc = crtc; |
785b93ef DA |
421 | i++; |
422 | } | |
e9ad3181 | 423 | |
785b93ef DA |
424 | return 0; |
425 | out_free: | |
4abe3520 | 426 | drm_fb_helper_crtc_free(fb_helper); |
785b93ef DA |
427 | return -ENOMEM; |
428 | } | |
4abe3520 DA |
429 | EXPORT_SYMBOL(drm_fb_helper_init); |
430 | ||
431 | void drm_fb_helper_fini(struct drm_fb_helper *fb_helper) | |
432 | { | |
433 | if (!list_empty(&fb_helper->kernel_fb_list)) { | |
434 | list_del(&fb_helper->kernel_fb_list); | |
435 | if (list_empty(&kernel_fb_helper_list)) { | |
3da1f33e | 436 | printk(KERN_INFO "drm: unregistered panic notifier\n"); |
4abe3520 DA |
437 | atomic_notifier_chain_unregister(&panic_notifier_list, |
438 | &paniced); | |
439 | unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
440 | } | |
441 | } | |
442 | ||
443 | drm_fb_helper_crtc_free(fb_helper); | |
444 | ||
4abe3520 DA |
445 | } |
446 | EXPORT_SYMBOL(drm_fb_helper_fini); | |
785b93ef | 447 | |
c850cb78 | 448 | static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, |
b8c00ac5 DA |
449 | u16 blue, u16 regno, struct fb_info *info) |
450 | { | |
451 | struct drm_fb_helper *fb_helper = info->par; | |
452 | struct drm_framebuffer *fb = fb_helper->fb; | |
453 | int pindex; | |
454 | ||
c850cb78 DA |
455 | if (info->fix.visual == FB_VISUAL_TRUECOLOR) { |
456 | u32 *palette; | |
457 | u32 value; | |
458 | /* place color in psuedopalette */ | |
459 | if (regno > 16) | |
460 | return -EINVAL; | |
461 | palette = (u32 *)info->pseudo_palette; | |
462 | red >>= (16 - info->var.red.length); | |
463 | green >>= (16 - info->var.green.length); | |
464 | blue >>= (16 - info->var.blue.length); | |
465 | value = (red << info->var.red.offset) | | |
466 | (green << info->var.green.offset) | | |
467 | (blue << info->var.blue.offset); | |
9da12b6a RC |
468 | if (info->var.transp.length > 0) { |
469 | u32 mask = (1 << info->var.transp.length) - 1; | |
470 | mask <<= info->var.transp.offset; | |
471 | value |= mask; | |
472 | } | |
c850cb78 DA |
473 | palette[regno] = value; |
474 | return 0; | |
475 | } | |
476 | ||
b8c00ac5 DA |
477 | pindex = regno; |
478 | ||
479 | if (fb->bits_per_pixel == 16) { | |
480 | pindex = regno << 3; | |
481 | ||
482 | if (fb->depth == 16 && regno > 63) | |
c850cb78 | 483 | return -EINVAL; |
b8c00ac5 | 484 | if (fb->depth == 15 && regno > 31) |
c850cb78 | 485 | return -EINVAL; |
b8c00ac5 DA |
486 | |
487 | if (fb->depth == 16) { | |
488 | u16 r, g, b; | |
489 | int i; | |
490 | if (regno < 32) { | |
491 | for (i = 0; i < 8; i++) | |
492 | fb_helper->funcs->gamma_set(crtc, red, | |
493 | green, blue, pindex + i); | |
494 | } | |
495 | ||
496 | fb_helper->funcs->gamma_get(crtc, &r, | |
497 | &g, &b, | |
498 | pindex >> 1); | |
499 | ||
500 | for (i = 0; i < 4; i++) | |
501 | fb_helper->funcs->gamma_set(crtc, r, | |
502 | green, b, | |
503 | (pindex >> 1) + i); | |
504 | } | |
505 | } | |
506 | ||
507 | if (fb->depth != 16) | |
508 | fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex); | |
c850cb78 | 509 | return 0; |
b8c00ac5 DA |
510 | } |
511 | ||
068143d3 DA |
512 | int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) |
513 | { | |
514 | struct drm_fb_helper *fb_helper = info->par; | |
8be48d92 | 515 | struct drm_crtc_helper_funcs *crtc_funcs; |
068143d3 DA |
516 | u16 *red, *green, *blue, *transp; |
517 | struct drm_crtc *crtc; | |
062ac622 | 518 | int i, j, rc = 0; |
068143d3 DA |
519 | int start; |
520 | ||
8be48d92 DA |
521 | for (i = 0; i < fb_helper->crtc_count; i++) { |
522 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
523 | crtc_funcs = crtc->helper_private; | |
068143d3 DA |
524 | |
525 | red = cmap->red; | |
526 | green = cmap->green; | |
527 | blue = cmap->blue; | |
528 | transp = cmap->transp; | |
529 | start = cmap->start; | |
530 | ||
062ac622 | 531 | for (j = 0; j < cmap->len; j++) { |
068143d3 DA |
532 | u16 hred, hgreen, hblue, htransp = 0xffff; |
533 | ||
534 | hred = *red++; | |
535 | hgreen = *green++; | |
536 | hblue = *blue++; | |
537 | ||
538 | if (transp) | |
539 | htransp = *transp++; | |
540 | ||
c850cb78 DA |
541 | rc = setcolreg(crtc, hred, hgreen, hblue, start++, info); |
542 | if (rc) | |
543 | return rc; | |
068143d3 DA |
544 | } |
545 | crtc_funcs->load_lut(crtc); | |
546 | } | |
547 | return rc; | |
548 | } | |
549 | EXPORT_SYMBOL(drm_fb_helper_setcmap); | |
550 | ||
785b93ef DA |
551 | int drm_fb_helper_check_var(struct fb_var_screeninfo *var, |
552 | struct fb_info *info) | |
553 | { | |
554 | struct drm_fb_helper *fb_helper = info->par; | |
555 | struct drm_framebuffer *fb = fb_helper->fb; | |
556 | int depth; | |
557 | ||
f90ebd9e | 558 | if (var->pixclock != 0 || in_dbg_master()) |
785b93ef DA |
559 | return -EINVAL; |
560 | ||
561 | /* Need to resize the fb object !!! */ | |
62fb376e CW |
562 | if (var->bits_per_pixel > fb->bits_per_pixel || |
563 | var->xres > fb->width || var->yres > fb->height || | |
564 | var->xres_virtual > fb->width || var->yres_virtual > fb->height) { | |
509c7d83 | 565 | DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb " |
62fb376e CW |
566 | "request %dx%d-%d (virtual %dx%d) > %dx%d-%d\n", |
567 | var->xres, var->yres, var->bits_per_pixel, | |
568 | var->xres_virtual, var->yres_virtual, | |
509c7d83 | 569 | fb->width, fb->height, fb->bits_per_pixel); |
785b93ef DA |
570 | return -EINVAL; |
571 | } | |
572 | ||
573 | switch (var->bits_per_pixel) { | |
574 | case 16: | |
575 | depth = (var->green.length == 6) ? 16 : 15; | |
576 | break; | |
577 | case 32: | |
578 | depth = (var->transp.length > 0) ? 32 : 24; | |
579 | break; | |
580 | default: | |
581 | depth = var->bits_per_pixel; | |
582 | break; | |
583 | } | |
584 | ||
585 | switch (depth) { | |
586 | case 8: | |
587 | var->red.offset = 0; | |
588 | var->green.offset = 0; | |
589 | var->blue.offset = 0; | |
590 | var->red.length = 8; | |
591 | var->green.length = 8; | |
592 | var->blue.length = 8; | |
593 | var->transp.length = 0; | |
594 | var->transp.offset = 0; | |
595 | break; | |
596 | case 15: | |
597 | var->red.offset = 10; | |
598 | var->green.offset = 5; | |
599 | var->blue.offset = 0; | |
600 | var->red.length = 5; | |
601 | var->green.length = 5; | |
602 | var->blue.length = 5; | |
603 | var->transp.length = 1; | |
604 | var->transp.offset = 15; | |
605 | break; | |
606 | case 16: | |
607 | var->red.offset = 11; | |
608 | var->green.offset = 5; | |
609 | var->blue.offset = 0; | |
610 | var->red.length = 5; | |
611 | var->green.length = 6; | |
612 | var->blue.length = 5; | |
613 | var->transp.length = 0; | |
614 | var->transp.offset = 0; | |
615 | break; | |
616 | case 24: | |
617 | var->red.offset = 16; | |
618 | var->green.offset = 8; | |
619 | var->blue.offset = 0; | |
620 | var->red.length = 8; | |
621 | var->green.length = 8; | |
622 | var->blue.length = 8; | |
623 | var->transp.length = 0; | |
624 | var->transp.offset = 0; | |
625 | break; | |
626 | case 32: | |
627 | var->red.offset = 16; | |
628 | var->green.offset = 8; | |
629 | var->blue.offset = 0; | |
630 | var->red.length = 8; | |
631 | var->green.length = 8; | |
632 | var->blue.length = 8; | |
633 | var->transp.length = 8; | |
634 | var->transp.offset = 24; | |
635 | break; | |
636 | default: | |
637 | return -EINVAL; | |
638 | } | |
639 | return 0; | |
640 | } | |
641 | EXPORT_SYMBOL(drm_fb_helper_check_var); | |
642 | ||
643 | /* this will let fbcon do the mode init */ | |
644 | int drm_fb_helper_set_par(struct fb_info *info) | |
645 | { | |
646 | struct drm_fb_helper *fb_helper = info->par; | |
647 | struct drm_device *dev = fb_helper->dev; | |
648 | struct fb_var_screeninfo *var = &info->var; | |
649 | struct drm_crtc *crtc; | |
650 | int ret; | |
651 | int i; | |
652 | ||
5349ef31 | 653 | if (var->pixclock != 0) { |
172e91f5 | 654 | DRM_ERROR("PIXEL CLOCK SET\n"); |
785b93ef DA |
655 | return -EINVAL; |
656 | } | |
657 | ||
8be48d92 DA |
658 | mutex_lock(&dev->mode_config.mutex); |
659 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
660 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
0b4c0f3f DA |
661 | ret = crtc->funcs->set_config(&fb_helper->crtc_info[i].mode_set); |
662 | if (ret) { | |
785b93ef | 663 | mutex_unlock(&dev->mode_config.mutex); |
0b4c0f3f | 664 | return ret; |
785b93ef DA |
665 | } |
666 | } | |
8be48d92 | 667 | mutex_unlock(&dev->mode_config.mutex); |
4abe3520 DA |
668 | |
669 | if (fb_helper->delayed_hotplug) { | |
670 | fb_helper->delayed_hotplug = false; | |
eb1f8e4f | 671 | drm_fb_helper_hotplug_event(fb_helper); |
4abe3520 | 672 | } |
785b93ef DA |
673 | return 0; |
674 | } | |
675 | EXPORT_SYMBOL(drm_fb_helper_set_par); | |
676 | ||
677 | int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, | |
678 | struct fb_info *info) | |
679 | { | |
680 | struct drm_fb_helper *fb_helper = info->par; | |
681 | struct drm_device *dev = fb_helper->dev; | |
682 | struct drm_mode_set *modeset; | |
683 | struct drm_crtc *crtc; | |
684 | int ret = 0; | |
685 | int i; | |
686 | ||
8be48d92 DA |
687 | mutex_lock(&dev->mode_config.mutex); |
688 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
689 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
785b93ef DA |
690 | |
691 | modeset = &fb_helper->crtc_info[i].mode_set; | |
692 | ||
693 | modeset->x = var->xoffset; | |
694 | modeset->y = var->yoffset; | |
695 | ||
696 | if (modeset->num_connectors) { | |
785b93ef | 697 | ret = crtc->funcs->set_config(modeset); |
785b93ef DA |
698 | if (!ret) { |
699 | info->var.xoffset = var->xoffset; | |
700 | info->var.yoffset = var->yoffset; | |
701 | } | |
702 | } | |
703 | } | |
8be48d92 | 704 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
705 | return ret; |
706 | } | |
707 | EXPORT_SYMBOL(drm_fb_helper_pan_display); | |
708 | ||
8be48d92 DA |
709 | int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, |
710 | int preferred_bpp) | |
785b93ef | 711 | { |
785b93ef DA |
712 | int new_fb = 0; |
713 | int crtc_count = 0; | |
4abe3520 | 714 | int i; |
785b93ef | 715 | struct fb_info *info; |
38651674 | 716 | struct drm_fb_helper_surface_size sizes; |
8be48d92 | 717 | int gamma_size = 0; |
38651674 DA |
718 | |
719 | memset(&sizes, 0, sizeof(struct drm_fb_helper_surface_size)); | |
720 | sizes.surface_depth = 24; | |
721 | sizes.surface_bpp = 32; | |
722 | sizes.fb_width = (unsigned)-1; | |
723 | sizes.fb_height = (unsigned)-1; | |
785b93ef | 724 | |
b8c00ac5 DA |
725 | /* if driver picks 8 or 16 by default use that |
726 | for both depth/bpp */ | |
38651674 DA |
727 | if (preferred_bpp != sizes.surface_bpp) { |
728 | sizes.surface_depth = sizes.surface_bpp = preferred_bpp; | |
b8c00ac5 | 729 | } |
785b93ef | 730 | /* first up get a count of crtcs now in use and new min/maxes width/heights */ |
0b4c0f3f DA |
731 | for (i = 0; i < fb_helper->connector_count; i++) { |
732 | struct drm_fb_helper_connector *fb_helper_conn = fb_helper->connector_info[i]; | |
1794d257 | 733 | struct drm_cmdline_mode *cmdline_mode; |
8ef8678c | 734 | |
0b4c0f3f | 735 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
d50ba256 DA |
736 | |
737 | if (cmdline_mode->bpp_specified) { | |
738 | switch (cmdline_mode->bpp) { | |
739 | case 8: | |
38651674 | 740 | sizes.surface_depth = sizes.surface_bpp = 8; |
d50ba256 DA |
741 | break; |
742 | case 15: | |
38651674 DA |
743 | sizes.surface_depth = 15; |
744 | sizes.surface_bpp = 16; | |
d50ba256 DA |
745 | break; |
746 | case 16: | |
38651674 | 747 | sizes.surface_depth = sizes.surface_bpp = 16; |
d50ba256 DA |
748 | break; |
749 | case 24: | |
38651674 | 750 | sizes.surface_depth = sizes.surface_bpp = 24; |
d50ba256 DA |
751 | break; |
752 | case 32: | |
38651674 DA |
753 | sizes.surface_depth = 24; |
754 | sizes.surface_bpp = 32; | |
d50ba256 DA |
755 | break; |
756 | } | |
757 | break; | |
758 | } | |
759 | } | |
760 | ||
8be48d92 DA |
761 | crtc_count = 0; |
762 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
763 | struct drm_display_mode *desired_mode; | |
764 | desired_mode = fb_helper->crtc_info[i].desired_mode; | |
765 | ||
766 | if (desired_mode) { | |
767 | if (gamma_size == 0) | |
768 | gamma_size = fb_helper->crtc_info[i].mode_set.crtc->gamma_size; | |
769 | if (desired_mode->hdisplay < sizes.fb_width) | |
770 | sizes.fb_width = desired_mode->hdisplay; | |
771 | if (desired_mode->vdisplay < sizes.fb_height) | |
772 | sizes.fb_height = desired_mode->vdisplay; | |
773 | if (desired_mode->hdisplay > sizes.surface_width) | |
774 | sizes.surface_width = desired_mode->hdisplay; | |
775 | if (desired_mode->vdisplay > sizes.surface_height) | |
776 | sizes.surface_height = desired_mode->vdisplay; | |
785b93ef DA |
777 | crtc_count++; |
778 | } | |
779 | } | |
780 | ||
38651674 | 781 | if (crtc_count == 0 || sizes.fb_width == -1 || sizes.fb_height == -1) { |
785b93ef DA |
782 | /* hmm everyone went away - assume VGA cable just fell out |
783 | and will come back later. */ | |
eb1f8e4f | 784 | DRM_INFO("Cannot find any crtc or sizes - going 1024x768\n"); |
19b4b445 DA |
785 | sizes.fb_width = sizes.surface_width = 1024; |
786 | sizes.fb_height = sizes.surface_height = 768; | |
785b93ef DA |
787 | } |
788 | ||
38651674 | 789 | /* push down into drivers */ |
4abe3520 | 790 | new_fb = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes); |
38651674 DA |
791 | if (new_fb < 0) |
792 | return new_fb; | |
785b93ef | 793 | |
38651674 | 794 | info = fb_helper->fbdev; |
785b93ef | 795 | |
8be48d92 DA |
796 | /* set the fb pointer */ |
797 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
798 | fb_helper->crtc_info[i].mode_set.fb = fb_helper->fb; | |
785b93ef | 799 | } |
785b93ef DA |
800 | |
801 | if (new_fb) { | |
5349ef31 | 802 | info->var.pixclock = 0; |
3bea21b6 | 803 | if (register_framebuffer(info) < 0) { |
785b93ef | 804 | return -EINVAL; |
3bea21b6 | 805 | } |
38651674 DA |
806 | |
807 | printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, | |
808 | info->fix.id); | |
809 | ||
785b93ef DA |
810 | } else { |
811 | drm_fb_helper_set_par(info); | |
812 | } | |
785b93ef DA |
813 | |
814 | /* Switch back to kernel console on panic */ | |
815 | /* multi card linked list maybe */ | |
816 | if (list_empty(&kernel_fb_helper_list)) { | |
3da1f33e | 817 | printk(KERN_INFO "drm: registered panic notifier\n"); |
785b93ef DA |
818 | atomic_notifier_chain_register(&panic_notifier_list, |
819 | &paniced); | |
820 | register_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
821 | } | |
38651674 DA |
822 | if (new_fb) |
823 | list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list); | |
824 | ||
785b93ef DA |
825 | return 0; |
826 | } | |
827 | EXPORT_SYMBOL(drm_fb_helper_single_fb_probe); | |
828 | ||
3632ef89 DA |
829 | void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, |
830 | uint32_t depth) | |
831 | { | |
832 | info->fix.type = FB_TYPE_PACKED_PIXELS; | |
833 | info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR : | |
834 | FB_VISUAL_TRUECOLOR; | |
835 | info->fix.mmio_start = 0; | |
836 | info->fix.mmio_len = 0; | |
837 | info->fix.type_aux = 0; | |
838 | info->fix.xpanstep = 1; /* doing it in hw */ | |
839 | info->fix.ypanstep = 1; /* doing it in hw */ | |
840 | info->fix.ywrapstep = 0; | |
841 | info->fix.accel = FB_ACCEL_NONE; | |
842 | info->fix.type_aux = 0; | |
843 | ||
844 | info->fix.line_length = pitch; | |
845 | return; | |
846 | } | |
847 | EXPORT_SYMBOL(drm_fb_helper_fill_fix); | |
848 | ||
38651674 | 849 | void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, |
785b93ef DA |
850 | uint32_t fb_width, uint32_t fb_height) |
851 | { | |
38651674 DA |
852 | struct drm_framebuffer *fb = fb_helper->fb; |
853 | info->pseudo_palette = fb_helper->pseudo_palette; | |
785b93ef DA |
854 | info->var.xres_virtual = fb->width; |
855 | info->var.yres_virtual = fb->height; | |
856 | info->var.bits_per_pixel = fb->bits_per_pixel; | |
57084d05 | 857 | info->var.accel_flags = FB_ACCELF_TEXT; |
785b93ef DA |
858 | info->var.xoffset = 0; |
859 | info->var.yoffset = 0; | |
860 | info->var.activate = FB_ACTIVATE_NOW; | |
861 | info->var.height = -1; | |
862 | info->var.width = -1; | |
863 | ||
864 | switch (fb->depth) { | |
865 | case 8: | |
866 | info->var.red.offset = 0; | |
867 | info->var.green.offset = 0; | |
868 | info->var.blue.offset = 0; | |
869 | info->var.red.length = 8; /* 8bit DAC */ | |
870 | info->var.green.length = 8; | |
871 | info->var.blue.length = 8; | |
872 | info->var.transp.offset = 0; | |
873 | info->var.transp.length = 0; | |
874 | break; | |
875 | case 15: | |
876 | info->var.red.offset = 10; | |
877 | info->var.green.offset = 5; | |
878 | info->var.blue.offset = 0; | |
879 | info->var.red.length = 5; | |
880 | info->var.green.length = 5; | |
881 | info->var.blue.length = 5; | |
882 | info->var.transp.offset = 15; | |
883 | info->var.transp.length = 1; | |
884 | break; | |
885 | case 16: | |
886 | info->var.red.offset = 11; | |
887 | info->var.green.offset = 5; | |
888 | info->var.blue.offset = 0; | |
889 | info->var.red.length = 5; | |
890 | info->var.green.length = 6; | |
891 | info->var.blue.length = 5; | |
892 | info->var.transp.offset = 0; | |
893 | break; | |
894 | case 24: | |
895 | info->var.red.offset = 16; | |
896 | info->var.green.offset = 8; | |
897 | info->var.blue.offset = 0; | |
898 | info->var.red.length = 8; | |
899 | info->var.green.length = 8; | |
900 | info->var.blue.length = 8; | |
901 | info->var.transp.offset = 0; | |
902 | info->var.transp.length = 0; | |
903 | break; | |
904 | case 32: | |
905 | info->var.red.offset = 16; | |
906 | info->var.green.offset = 8; | |
907 | info->var.blue.offset = 0; | |
908 | info->var.red.length = 8; | |
909 | info->var.green.length = 8; | |
910 | info->var.blue.length = 8; | |
911 | info->var.transp.offset = 24; | |
912 | info->var.transp.length = 8; | |
913 | break; | |
914 | default: | |
915 | break; | |
916 | } | |
917 | ||
918 | info->var.xres = fb_width; | |
919 | info->var.yres = fb_height; | |
920 | } | |
921 | EXPORT_SYMBOL(drm_fb_helper_fill_var); | |
38651674 | 922 | |
0b4c0f3f DA |
923 | static int drm_fb_helper_probe_connector_modes(struct drm_fb_helper *fb_helper, |
924 | uint32_t maxX, | |
925 | uint32_t maxY) | |
38651674 DA |
926 | { |
927 | struct drm_connector *connector; | |
928 | int count = 0; | |
0b4c0f3f | 929 | int i; |
38651674 | 930 | |
0b4c0f3f DA |
931 | for (i = 0; i < fb_helper->connector_count; i++) { |
932 | connector = fb_helper->connector_info[i]->connector; | |
38651674 DA |
933 | count += connector->funcs->fill_modes(connector, maxX, maxY); |
934 | } | |
935 | ||
936 | return count; | |
937 | } | |
938 | ||
0b4c0f3f | 939 | static struct drm_display_mode *drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, int width, int height) |
38651674 DA |
940 | { |
941 | struct drm_display_mode *mode; | |
942 | ||
0b4c0f3f | 943 | list_for_each_entry(mode, &fb_connector->connector->modes, head) { |
38651674 DA |
944 | if (drm_mode_width(mode) > width || |
945 | drm_mode_height(mode) > height) | |
946 | continue; | |
947 | if (mode->type & DRM_MODE_TYPE_PREFERRED) | |
948 | return mode; | |
949 | } | |
950 | return NULL; | |
951 | } | |
952 | ||
0b4c0f3f | 953 | static bool drm_has_cmdline_mode(struct drm_fb_helper_connector *fb_connector) |
38651674 | 954 | { |
1794d257 | 955 | struct drm_cmdline_mode *cmdline_mode; |
0b4c0f3f | 956 | cmdline_mode = &fb_connector->cmdline_mode; |
38651674 DA |
957 | return cmdline_mode->specified; |
958 | } | |
959 | ||
0b4c0f3f DA |
960 | static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn, |
961 | int width, int height) | |
38651674 | 962 | { |
1794d257 | 963 | struct drm_cmdline_mode *cmdline_mode; |
38651674 DA |
964 | struct drm_display_mode *mode = NULL; |
965 | ||
0b4c0f3f | 966 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
38651674 DA |
967 | if (cmdline_mode->specified == false) |
968 | return mode; | |
969 | ||
970 | /* attempt to find a matching mode in the list of modes | |
971 | * we have gotten so far, if not add a CVT mode that conforms | |
972 | */ | |
973 | if (cmdline_mode->rb || cmdline_mode->margins) | |
974 | goto create_mode; | |
975 | ||
0b4c0f3f | 976 | list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { |
38651674 DA |
977 | /* check width/height */ |
978 | if (mode->hdisplay != cmdline_mode->xres || | |
979 | mode->vdisplay != cmdline_mode->yres) | |
980 | continue; | |
981 | ||
982 | if (cmdline_mode->refresh_specified) { | |
983 | if (mode->vrefresh != cmdline_mode->refresh) | |
984 | continue; | |
985 | } | |
986 | ||
987 | if (cmdline_mode->interlace) { | |
988 | if (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) | |
989 | continue; | |
990 | } | |
991 | return mode; | |
992 | } | |
993 | ||
994 | create_mode: | |
1794d257 CW |
995 | mode = drm_mode_create_from_cmdline_mode(fb_helper_conn->connector->dev, |
996 | cmdline_mode); | |
0b4c0f3f | 997 | list_add(&mode->head, &fb_helper_conn->connector->modes); |
38651674 DA |
998 | return mode; |
999 | } | |
1000 | ||
1001 | static bool drm_connector_enabled(struct drm_connector *connector, bool strict) | |
1002 | { | |
1003 | bool enable; | |
1004 | ||
1005 | if (strict) { | |
1006 | enable = connector->status == connector_status_connected; | |
1007 | } else { | |
1008 | enable = connector->status != connector_status_disconnected; | |
1009 | } | |
1010 | return enable; | |
1011 | } | |
1012 | ||
0b4c0f3f DA |
1013 | static void drm_enable_connectors(struct drm_fb_helper *fb_helper, |
1014 | bool *enabled) | |
38651674 DA |
1015 | { |
1016 | bool any_enabled = false; | |
1017 | struct drm_connector *connector; | |
1018 | int i = 0; | |
1019 | ||
0b4c0f3f DA |
1020 | for (i = 0; i < fb_helper->connector_count; i++) { |
1021 | connector = fb_helper->connector_info[i]->connector; | |
38651674 DA |
1022 | enabled[i] = drm_connector_enabled(connector, true); |
1023 | DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, | |
1024 | enabled[i] ? "yes" : "no"); | |
1025 | any_enabled |= enabled[i]; | |
38651674 DA |
1026 | } |
1027 | ||
1028 | if (any_enabled) | |
1029 | return; | |
1030 | ||
0b4c0f3f DA |
1031 | for (i = 0; i < fb_helper->connector_count; i++) { |
1032 | connector = fb_helper->connector_info[i]->connector; | |
38651674 | 1033 | enabled[i] = drm_connector_enabled(connector, false); |
38651674 DA |
1034 | } |
1035 | } | |
1036 | ||
1d42bbc8 DA |
1037 | static bool drm_target_cloned(struct drm_fb_helper *fb_helper, |
1038 | struct drm_display_mode **modes, | |
1039 | bool *enabled, int width, int height) | |
1040 | { | |
1041 | int count, i, j; | |
1042 | bool can_clone = false; | |
1043 | struct drm_fb_helper_connector *fb_helper_conn; | |
1044 | struct drm_display_mode *dmt_mode, *mode; | |
1045 | ||
1046 | /* only contemplate cloning in the single crtc case */ | |
1047 | if (fb_helper->crtc_count > 1) | |
1048 | return false; | |
1049 | ||
1050 | count = 0; | |
1051 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1052 | if (enabled[i]) | |
1053 | count++; | |
1054 | } | |
1055 | ||
1056 | /* only contemplate cloning if more than one connector is enabled */ | |
1057 | if (count <= 1) | |
1058 | return false; | |
1059 | ||
1060 | /* check the command line or if nothing common pick 1024x768 */ | |
1061 | can_clone = true; | |
1062 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1063 | if (!enabled[i]) | |
1064 | continue; | |
1065 | fb_helper_conn = fb_helper->connector_info[i]; | |
1066 | modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); | |
1067 | if (!modes[i]) { | |
1068 | can_clone = false; | |
1069 | break; | |
1070 | } | |
1071 | for (j = 0; j < i; j++) { | |
1072 | if (!enabled[j]) | |
1073 | continue; | |
1074 | if (!drm_mode_equal(modes[j], modes[i])) | |
1075 | can_clone = false; | |
1076 | } | |
1077 | } | |
1078 | ||
1079 | if (can_clone) { | |
1080 | DRM_DEBUG_KMS("can clone using command line\n"); | |
1081 | return true; | |
1082 | } | |
1083 | ||
1084 | /* try and find a 1024x768 mode on each connector */ | |
1085 | can_clone = true; | |
f6e252ba | 1086 | dmt_mode = drm_mode_find_dmt(fb_helper->dev, 1024, 768, 60, false); |
1d42bbc8 DA |
1087 | |
1088 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1089 | ||
1090 | if (!enabled[i]) | |
1091 | continue; | |
1092 | ||
1093 | fb_helper_conn = fb_helper->connector_info[i]; | |
1094 | list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { | |
1095 | if (drm_mode_equal(mode, dmt_mode)) | |
1096 | modes[i] = mode; | |
1097 | } | |
1098 | if (!modes[i]) | |
1099 | can_clone = false; | |
1100 | } | |
1101 | ||
1102 | if (can_clone) { | |
1103 | DRM_DEBUG_KMS("can clone using 1024x768\n"); | |
1104 | return true; | |
1105 | } | |
1106 | DRM_INFO("kms: can't enable cloning when we probably wanted to.\n"); | |
1107 | return false; | |
1108 | } | |
1109 | ||
0b4c0f3f | 1110 | static bool drm_target_preferred(struct drm_fb_helper *fb_helper, |
38651674 DA |
1111 | struct drm_display_mode **modes, |
1112 | bool *enabled, int width, int height) | |
1113 | { | |
0b4c0f3f DA |
1114 | struct drm_fb_helper_connector *fb_helper_conn; |
1115 | int i; | |
38651674 | 1116 | |
0b4c0f3f DA |
1117 | for (i = 0; i < fb_helper->connector_count; i++) { |
1118 | fb_helper_conn = fb_helper->connector_info[i]; | |
38651674 | 1119 | |
0b4c0f3f | 1120 | if (enabled[i] == false) |
38651674 | 1121 | continue; |
38651674 DA |
1122 | |
1123 | DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n", | |
0b4c0f3f | 1124 | fb_helper_conn->connector->base.id); |
38651674 DA |
1125 | |
1126 | /* got for command line mode first */ | |
0b4c0f3f | 1127 | modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); |
38651674 DA |
1128 | if (!modes[i]) { |
1129 | DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", | |
0b4c0f3f DA |
1130 | fb_helper_conn->connector->base.id); |
1131 | modes[i] = drm_has_preferred_mode(fb_helper_conn, width, height); | |
38651674 DA |
1132 | } |
1133 | /* No preferred modes, pick one off the list */ | |
0b4c0f3f DA |
1134 | if (!modes[i] && !list_empty(&fb_helper_conn->connector->modes)) { |
1135 | list_for_each_entry(modes[i], &fb_helper_conn->connector->modes, head) | |
38651674 DA |
1136 | break; |
1137 | } | |
1138 | DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : | |
1139 | "none"); | |
38651674 DA |
1140 | } |
1141 | return true; | |
1142 | } | |
1143 | ||
8be48d92 DA |
1144 | static int drm_pick_crtcs(struct drm_fb_helper *fb_helper, |
1145 | struct drm_fb_helper_crtc **best_crtcs, | |
38651674 DA |
1146 | struct drm_display_mode **modes, |
1147 | int n, int width, int height) | |
1148 | { | |
1149 | int c, o; | |
8be48d92 | 1150 | struct drm_device *dev = fb_helper->dev; |
38651674 DA |
1151 | struct drm_connector *connector; |
1152 | struct drm_connector_helper_funcs *connector_funcs; | |
1153 | struct drm_encoder *encoder; | |
8be48d92 | 1154 | struct drm_fb_helper_crtc *best_crtc; |
38651674 | 1155 | int my_score, best_score, score; |
8be48d92 | 1156 | struct drm_fb_helper_crtc **crtcs, *crtc; |
0b4c0f3f | 1157 | struct drm_fb_helper_connector *fb_helper_conn; |
38651674 | 1158 | |
0b4c0f3f | 1159 | if (n == fb_helper->connector_count) |
38651674 | 1160 | return 0; |
0b4c0f3f DA |
1161 | |
1162 | fb_helper_conn = fb_helper->connector_info[n]; | |
1163 | connector = fb_helper_conn->connector; | |
38651674 DA |
1164 | |
1165 | best_crtcs[n] = NULL; | |
1166 | best_crtc = NULL; | |
8be48d92 | 1167 | best_score = drm_pick_crtcs(fb_helper, best_crtcs, modes, n+1, width, height); |
38651674 DA |
1168 | if (modes[n] == NULL) |
1169 | return best_score; | |
1170 | ||
8be48d92 DA |
1171 | crtcs = kzalloc(dev->mode_config.num_connector * |
1172 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); | |
38651674 DA |
1173 | if (!crtcs) |
1174 | return best_score; | |
1175 | ||
1176 | my_score = 1; | |
1177 | if (connector->status == connector_status_connected) | |
1178 | my_score++; | |
0b4c0f3f | 1179 | if (drm_has_cmdline_mode(fb_helper_conn)) |
38651674 | 1180 | my_score++; |
0b4c0f3f | 1181 | if (drm_has_preferred_mode(fb_helper_conn, width, height)) |
38651674 DA |
1182 | my_score++; |
1183 | ||
1184 | connector_funcs = connector->helper_private; | |
1185 | encoder = connector_funcs->best_encoder(connector); | |
1186 | if (!encoder) | |
1187 | goto out; | |
1188 | ||
38651674 DA |
1189 | /* select a crtc for this connector and then attempt to configure |
1190 | remaining connectors */ | |
8be48d92 DA |
1191 | for (c = 0; c < fb_helper->crtc_count; c++) { |
1192 | crtc = &fb_helper->crtc_info[c]; | |
38651674 DA |
1193 | |
1194 | if ((encoder->possible_crtcs & (1 << c)) == 0) { | |
38651674 DA |
1195 | continue; |
1196 | } | |
1197 | ||
1198 | for (o = 0; o < n; o++) | |
1199 | if (best_crtcs[o] == crtc) | |
1200 | break; | |
1201 | ||
1202 | if (o < n) { | |
1d42bbc8 DA |
1203 | /* ignore cloning unless only a single crtc */ |
1204 | if (fb_helper->crtc_count > 1) | |
1205 | continue; | |
1206 | ||
1207 | if (!drm_mode_equal(modes[o], modes[n])) | |
1208 | continue; | |
38651674 DA |
1209 | } |
1210 | ||
1211 | crtcs[n] = crtc; | |
8be48d92 DA |
1212 | memcpy(crtcs, best_crtcs, n * sizeof(struct drm_fb_helper_crtc *)); |
1213 | score = my_score + drm_pick_crtcs(fb_helper, crtcs, modes, n + 1, | |
38651674 DA |
1214 | width, height); |
1215 | if (score > best_score) { | |
1216 | best_crtc = crtc; | |
1217 | best_score = score; | |
1218 | memcpy(best_crtcs, crtcs, | |
1219 | dev->mode_config.num_connector * | |
8be48d92 | 1220 | sizeof(struct drm_fb_helper_crtc *)); |
38651674 | 1221 | } |
38651674 DA |
1222 | } |
1223 | out: | |
1224 | kfree(crtcs); | |
1225 | return best_score; | |
1226 | } | |
1227 | ||
8be48d92 | 1228 | static void drm_setup_crtcs(struct drm_fb_helper *fb_helper) |
38651674 | 1229 | { |
8be48d92 DA |
1230 | struct drm_device *dev = fb_helper->dev; |
1231 | struct drm_fb_helper_crtc **crtcs; | |
38651674 | 1232 | struct drm_display_mode **modes; |
8be48d92 | 1233 | struct drm_mode_set *modeset; |
38651674 DA |
1234 | bool *enabled; |
1235 | int width, height; | |
1236 | int i, ret; | |
1237 | ||
1238 | DRM_DEBUG_KMS("\n"); | |
1239 | ||
1240 | width = dev->mode_config.max_width; | |
1241 | height = dev->mode_config.max_height; | |
1242 | ||
38651674 | 1243 | crtcs = kcalloc(dev->mode_config.num_connector, |
8be48d92 | 1244 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); |
38651674 DA |
1245 | modes = kcalloc(dev->mode_config.num_connector, |
1246 | sizeof(struct drm_display_mode *), GFP_KERNEL); | |
1247 | enabled = kcalloc(dev->mode_config.num_connector, | |
1248 | sizeof(bool), GFP_KERNEL); | |
1249 | ||
0b4c0f3f | 1250 | drm_enable_connectors(fb_helper, enabled); |
38651674 | 1251 | |
1d42bbc8 DA |
1252 | ret = drm_target_cloned(fb_helper, modes, enabled, width, height); |
1253 | if (!ret) { | |
1254 | ret = drm_target_preferred(fb_helper, modes, enabled, width, height); | |
1255 | if (!ret) | |
1256 | DRM_ERROR("Unable to find initial modes\n"); | |
1257 | } | |
38651674 DA |
1258 | |
1259 | DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height); | |
1260 | ||
8be48d92 DA |
1261 | drm_pick_crtcs(fb_helper, crtcs, modes, 0, width, height); |
1262 | ||
1263 | /* need to set the modesets up here for use later */ | |
1264 | /* fill out the connector<->crtc mappings into the modesets */ | |
1265 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
1266 | modeset = &fb_helper->crtc_info[i].mode_set; | |
1267 | modeset->num_connectors = 0; | |
1268 | } | |
38651674 | 1269 | |
0b4c0f3f | 1270 | for (i = 0; i < fb_helper->connector_count; i++) { |
38651674 | 1271 | struct drm_display_mode *mode = modes[i]; |
8be48d92 DA |
1272 | struct drm_fb_helper_crtc *fb_crtc = crtcs[i]; |
1273 | modeset = &fb_crtc->mode_set; | |
38651674 | 1274 | |
8be48d92 | 1275 | if (mode && fb_crtc) { |
38651674 | 1276 | DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", |
8be48d92 DA |
1277 | mode->name, fb_crtc->mode_set.crtc->base.id); |
1278 | fb_crtc->desired_mode = mode; | |
1279 | if (modeset->mode) | |
1280 | drm_mode_destroy(dev, modeset->mode); | |
1281 | modeset->mode = drm_mode_duplicate(dev, | |
1282 | fb_crtc->desired_mode); | |
0b4c0f3f | 1283 | modeset->connectors[modeset->num_connectors++] = fb_helper->connector_info[i]->connector; |
38651674 | 1284 | } |
38651674 DA |
1285 | } |
1286 | ||
1287 | kfree(crtcs); | |
1288 | kfree(modes); | |
1289 | kfree(enabled); | |
1290 | } | |
1291 | ||
1292 | /** | |
1293 | * drm_helper_initial_config - setup a sane initial connector configuration | |
1294 | * @dev: DRM device | |
1295 | * | |
1296 | * LOCKING: | |
1297 | * Called at init time, must take mode config lock. | |
1298 | * | |
1299 | * Scan the CRTCs and connectors and try to put together an initial setup. | |
1300 | * At the moment, this is a cloned configuration across all heads with | |
1301 | * a new framebuffer object as the backing store. | |
1302 | * | |
1303 | * RETURNS: | |
1304 | * Zero if everything went ok, nonzero otherwise. | |
1305 | */ | |
4abe3520 | 1306 | bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel) |
38651674 | 1307 | { |
8be48d92 | 1308 | struct drm_device *dev = fb_helper->dev; |
38651674 DA |
1309 | int count = 0; |
1310 | ||
1311 | /* disable all the possible outputs/crtcs before entering KMS mode */ | |
8be48d92 | 1312 | drm_helper_disable_unused_functions(fb_helper->dev); |
38651674 | 1313 | |
0b4c0f3f | 1314 | drm_fb_helper_parse_command_line(fb_helper); |
38651674 | 1315 | |
0b4c0f3f DA |
1316 | count = drm_fb_helper_probe_connector_modes(fb_helper, |
1317 | dev->mode_config.max_width, | |
1318 | dev->mode_config.max_height); | |
38651674 DA |
1319 | /* |
1320 | * we shouldn't end up with no modes here. | |
1321 | */ | |
5c4426a7 | 1322 | if (count == 0) { |
eb1f8e4f | 1323 | printk(KERN_INFO "No connectors reported connected with modes\n"); |
5c4426a7 | 1324 | } |
8be48d92 | 1325 | drm_setup_crtcs(fb_helper); |
38651674 | 1326 | |
4abe3520 | 1327 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
38651674 | 1328 | } |
8be48d92 | 1329 | EXPORT_SYMBOL(drm_fb_helper_initial_config); |
38651674 | 1330 | |
7394371d CW |
1331 | /** |
1332 | * drm_fb_helper_hotplug_event - respond to a hotplug notification by | |
1333 | * probing all the outputs attached to the fb. | |
1334 | * @fb_helper: the drm_fb_helper | |
1335 | * | |
1336 | * LOCKING: | |
1337 | * Called at runtime, must take mode config lock. | |
1338 | * | |
1339 | * Scan the connectors attached to the fb_helper and try to put together a | |
1340 | * setup after *notification of a change in output configuration. | |
1341 | * | |
1342 | * RETURNS: | |
1343 | * 0 on success and a non-zero error code otherwise. | |
1344 | */ | |
1345 | int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper) | |
38651674 | 1346 | { |
7394371d | 1347 | struct drm_device *dev = fb_helper->dev; |
5c4426a7 | 1348 | int count = 0; |
4abe3520 | 1349 | u32 max_width, max_height, bpp_sel; |
343065a6 | 1350 | int bound = 0, crtcs_bound = 0; |
4abe3520 | 1351 | struct drm_crtc *crtc; |
5c4426a7 | 1352 | |
eb1f8e4f | 1353 | if (!fb_helper->fb) |
7394371d | 1354 | return 0; |
4abe3520 | 1355 | |
7394371d CW |
1356 | mutex_lock(&dev->mode_config.mutex); |
1357 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
4abe3520 | 1358 | if (crtc->fb) |
343065a6 | 1359 | crtcs_bound++; |
4abe3520 | 1360 | if (crtc->fb == fb_helper->fb) |
343065a6 | 1361 | bound++; |
4abe3520 DA |
1362 | } |
1363 | ||
343065a6 | 1364 | if (bound < crtcs_bound) { |
4abe3520 | 1365 | fb_helper->delayed_hotplug = true; |
7394371d CW |
1366 | mutex_unlock(&dev->mode_config.mutex); |
1367 | return 0; | |
4abe3520 | 1368 | } |
eb1f8e4f | 1369 | DRM_DEBUG_KMS("\n"); |
4abe3520 | 1370 | |
eb1f8e4f DA |
1371 | max_width = fb_helper->fb->width; |
1372 | max_height = fb_helper->fb->height; | |
1373 | bpp_sel = fb_helper->fb->bits_per_pixel; | |
5c4426a7 | 1374 | |
eb1f8e4f DA |
1375 | count = drm_fb_helper_probe_connector_modes(fb_helper, max_width, |
1376 | max_height); | |
1377 | drm_setup_crtcs(fb_helper); | |
7394371d | 1378 | mutex_unlock(&dev->mode_config.mutex); |
4abe3520 | 1379 | |
eb1f8e4f | 1380 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
5c4426a7 | 1381 | } |
eb1f8e4f | 1382 | EXPORT_SYMBOL(drm_fb_helper_hotplug_event); |
5c4426a7 | 1383 | |
6a108a14 | 1384 | /* The Kconfig DRM_KMS_HELPER selects FRAMEBUFFER_CONSOLE (if !EXPERT) |
3ce05168 DF |
1385 | * but the module doesn't depend on any fb console symbols. At least |
1386 | * attempt to load fbcon to avoid leaving the system without a usable console. | |
1387 | */ | |
6a108a14 | 1388 | #if defined(CONFIG_FRAMEBUFFER_CONSOLE_MODULE) && !defined(CONFIG_EXPERT) |
3ce05168 DF |
1389 | static int __init drm_fb_helper_modinit(void) |
1390 | { | |
1391 | const char *name = "fbcon"; | |
1392 | struct module *fbcon; | |
1393 | ||
1394 | mutex_lock(&module_mutex); | |
1395 | fbcon = find_module(name); | |
1396 | mutex_unlock(&module_mutex); | |
1397 | ||
1398 | if (!fbcon) | |
1399 | request_module_nowait(name); | |
1400 | return 0; | |
1401 | } | |
1402 | ||
1403 | module_init(drm_fb_helper_modinit); | |
1404 | #endif |