Commit | Line | Data |
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785b93ef DA |
1 | /* |
2 | * Copyright (c) 2006-2009 Red Hat Inc. | |
3 | * Copyright (c) 2006-2008 Intel Corporation | |
4 | * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> | |
5 | * | |
6 | * DRM framebuffer helper functions | |
7 | * | |
8 | * Permission to use, copy, modify, distribute, and sell this software and its | |
9 | * documentation for any purpose is hereby granted without fee, provided that | |
10 | * the above copyright notice appear in all copies and that both that copyright | |
11 | * notice and this permission notice appear in supporting documentation, and | |
12 | * that the name of the copyright holders not be used in advertising or | |
13 | * publicity pertaining to distribution of the software without specific, | |
14 | * written prior permission. The copyright holders make no representations | |
15 | * about the suitability of this software for any purpose. It is provided "as | |
16 | * is" without express or implied warranty. | |
17 | * | |
18 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
19 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
20 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
21 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
22 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
23 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
24 | * OF THIS SOFTWARE. | |
25 | * | |
26 | * Authors: | |
27 | * Dave Airlie <airlied@linux.ie> | |
28 | * Jesse Barnes <jesse.barnes@intel.com> | |
29 | */ | |
3b40a443 | 30 | #include <linux/kernel.h> |
785b93ef | 31 | #include <linux/sysrq.h> |
5a0e3ad6 | 32 | #include <linux/slab.h> |
785b93ef | 33 | #include <linux/fb.h> |
e0cd3608 | 34 | #include <linux/module.h> |
785b93ef DA |
35 | #include "drmP.h" |
36 | #include "drm_crtc.h" | |
37 | #include "drm_fb_helper.h" | |
38 | #include "drm_crtc_helper.h" | |
39 | ||
6fcefd56 DA |
40 | MODULE_AUTHOR("David Airlie, Jesse Barnes"); |
41 | MODULE_DESCRIPTION("DRM KMS helper"); | |
42 | MODULE_LICENSE("GPL and additional rights"); | |
43 | ||
785b93ef DA |
44 | static LIST_HEAD(kernel_fb_helper_list); |
45 | ||
0b4c0f3f DA |
46 | /* simple single crtc case helper function */ |
47 | int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper) | |
d50ba256 | 48 | { |
0b4c0f3f DA |
49 | struct drm_device *dev = fb_helper->dev; |
50 | struct drm_connector *connector; | |
51 | int i; | |
d50ba256 | 52 | |
0b4c0f3f DA |
53 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
54 | struct drm_fb_helper_connector *fb_helper_connector; | |
55 | ||
56 | fb_helper_connector = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL); | |
57 | if (!fb_helper_connector) | |
58 | goto fail; | |
d50ba256 | 59 | |
0b4c0f3f DA |
60 | fb_helper_connector->connector = connector; |
61 | fb_helper->connector_info[fb_helper->connector_count++] = fb_helper_connector; | |
62 | } | |
d50ba256 | 63 | return 0; |
0b4c0f3f DA |
64 | fail: |
65 | for (i = 0; i < fb_helper->connector_count; i++) { | |
66 | kfree(fb_helper->connector_info[i]); | |
67 | fb_helper->connector_info[i] = NULL; | |
68 | } | |
69 | fb_helper->connector_count = 0; | |
70 | return -ENOMEM; | |
d50ba256 | 71 | } |
0b4c0f3f | 72 | EXPORT_SYMBOL(drm_fb_helper_single_add_all_connectors); |
d50ba256 | 73 | |
0b4c0f3f | 74 | static int drm_fb_helper_parse_command_line(struct drm_fb_helper *fb_helper) |
d50ba256 | 75 | { |
0b4c0f3f DA |
76 | struct drm_fb_helper_connector *fb_helper_conn; |
77 | int i; | |
d50ba256 | 78 | |
0b4c0f3f | 79 | for (i = 0; i < fb_helper->connector_count; i++) { |
1794d257 CW |
80 | struct drm_cmdline_mode *mode; |
81 | struct drm_connector *connector; | |
d50ba256 DA |
82 | char *option = NULL; |
83 | ||
0b4c0f3f | 84 | fb_helper_conn = fb_helper->connector_info[i]; |
1794d257 CW |
85 | connector = fb_helper_conn->connector; |
86 | mode = &fb_helper_conn->cmdline_mode; | |
0b4c0f3f | 87 | |
d50ba256 | 88 | /* do something on return - turn off connector maybe */ |
1794d257 | 89 | if (fb_get_options(drm_get_connector_name(connector), &option)) |
d50ba256 DA |
90 | continue; |
91 | ||
1794d257 CW |
92 | if (drm_mode_parse_command_line_for_connector(option, |
93 | connector, | |
94 | mode)) { | |
95 | if (mode->force) { | |
96 | const char *s; | |
97 | switch (mode->force) { | |
98 | case DRM_FORCE_OFF: s = "OFF"; break; | |
99 | case DRM_FORCE_ON_DIGITAL: s = "ON - dig"; break; | |
100 | default: | |
101 | case DRM_FORCE_ON: s = "ON"; break; | |
102 | } | |
103 | ||
104 | DRM_INFO("forcing %s connector %s\n", | |
105 | drm_get_connector_name(connector), s); | |
106 | connector->force = mode->force; | |
107 | } | |
108 | ||
109 | DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n", | |
110 | drm_get_connector_name(connector), | |
111 | mode->xres, mode->yres, | |
112 | mode->refresh_specified ? mode->refresh : 60, | |
113 | mode->rb ? " reduced blanking" : "", | |
114 | mode->margins ? " with margins" : "", | |
115 | mode->interlace ? " interlaced" : ""); | |
116 | } | |
117 | ||
d50ba256 DA |
118 | } |
119 | return 0; | |
120 | } | |
121 | ||
99231028 JW |
122 | static void drm_fb_helper_save_lut_atomic(struct drm_crtc *crtc, struct drm_fb_helper *helper) |
123 | { | |
124 | uint16_t *r_base, *g_base, *b_base; | |
125 | int i; | |
126 | ||
127 | r_base = crtc->gamma_store; | |
128 | g_base = r_base + crtc->gamma_size; | |
129 | b_base = g_base + crtc->gamma_size; | |
130 | ||
131 | for (i = 0; i < crtc->gamma_size; i++) | |
132 | helper->funcs->gamma_get(crtc, &r_base[i], &g_base[i], &b_base[i], i); | |
133 | } | |
134 | ||
135 | static void drm_fb_helper_restore_lut_atomic(struct drm_crtc *crtc) | |
136 | { | |
137 | uint16_t *r_base, *g_base, *b_base; | |
138 | ||
139 | r_base = crtc->gamma_store; | |
140 | g_base = r_base + crtc->gamma_size; | |
141 | b_base = g_base + crtc->gamma_size; | |
142 | ||
143 | crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size); | |
144 | } | |
145 | ||
1a7aba7f JB |
146 | int drm_fb_helper_debug_enter(struct fb_info *info) |
147 | { | |
148 | struct drm_fb_helper *helper = info->par; | |
149 | struct drm_crtc_helper_funcs *funcs; | |
150 | int i; | |
151 | ||
152 | if (list_empty(&kernel_fb_helper_list)) | |
153 | return false; | |
154 | ||
155 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { | |
156 | for (i = 0; i < helper->crtc_count; i++) { | |
157 | struct drm_mode_set *mode_set = | |
158 | &helper->crtc_info[i].mode_set; | |
159 | ||
160 | if (!mode_set->crtc->enabled) | |
161 | continue; | |
162 | ||
163 | funcs = mode_set->crtc->helper_private; | |
99231028 | 164 | drm_fb_helper_save_lut_atomic(mode_set->crtc, helper); |
1a7aba7f JB |
165 | funcs->mode_set_base_atomic(mode_set->crtc, |
166 | mode_set->fb, | |
167 | mode_set->x, | |
413d45d3 | 168 | mode_set->y, |
21c74a8e | 169 | ENTER_ATOMIC_MODE_SET); |
1a7aba7f JB |
170 | } |
171 | } | |
172 | ||
173 | return 0; | |
174 | } | |
175 | EXPORT_SYMBOL(drm_fb_helper_debug_enter); | |
176 | ||
177 | /* Find the real fb for a given fb helper CRTC */ | |
178 | static struct drm_framebuffer *drm_mode_config_fb(struct drm_crtc *crtc) | |
179 | { | |
180 | struct drm_device *dev = crtc->dev; | |
181 | struct drm_crtc *c; | |
182 | ||
183 | list_for_each_entry(c, &dev->mode_config.crtc_list, head) { | |
184 | if (crtc->base.id == c->base.id) | |
185 | return c->fb; | |
186 | } | |
187 | ||
188 | return NULL; | |
189 | } | |
190 | ||
191 | int drm_fb_helper_debug_leave(struct fb_info *info) | |
192 | { | |
193 | struct drm_fb_helper *helper = info->par; | |
194 | struct drm_crtc *crtc; | |
195 | struct drm_crtc_helper_funcs *funcs; | |
196 | struct drm_framebuffer *fb; | |
197 | int i; | |
198 | ||
199 | for (i = 0; i < helper->crtc_count; i++) { | |
200 | struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set; | |
201 | crtc = mode_set->crtc; | |
202 | funcs = crtc->helper_private; | |
203 | fb = drm_mode_config_fb(crtc); | |
204 | ||
205 | if (!crtc->enabled) | |
206 | continue; | |
207 | ||
208 | if (!fb) { | |
209 | DRM_ERROR("no fb to restore??\n"); | |
210 | continue; | |
211 | } | |
212 | ||
99231028 | 213 | drm_fb_helper_restore_lut_atomic(mode_set->crtc); |
1a7aba7f | 214 | funcs->mode_set_base_atomic(mode_set->crtc, fb, crtc->x, |
21c74a8e | 215 | crtc->y, LEAVE_ATOMIC_MODE_SET); |
1a7aba7f JB |
216 | } |
217 | ||
218 | return 0; | |
219 | } | |
220 | EXPORT_SYMBOL(drm_fb_helper_debug_leave); | |
221 | ||
e8e7a2b8 DA |
222 | bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper) |
223 | { | |
224 | bool error = false; | |
225 | int i, ret; | |
226 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
227 | struct drm_mode_set *mode_set = &fb_helper->crtc_info[i].mode_set; | |
228 | ret = drm_crtc_helper_set_config(mode_set); | |
229 | if (ret) | |
230 | error = true; | |
231 | } | |
232 | return error; | |
233 | } | |
234 | EXPORT_SYMBOL(drm_fb_helper_restore_fbdev_mode); | |
235 | ||
785b93ef DA |
236 | bool drm_fb_helper_force_kernel_mode(void) |
237 | { | |
785b93ef DA |
238 | bool ret, error = false; |
239 | struct drm_fb_helper *helper; | |
240 | ||
241 | if (list_empty(&kernel_fb_helper_list)) | |
242 | return false; | |
243 | ||
244 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { | |
e8e7a2b8 DA |
245 | if (helper->dev->switch_power_state == DRM_SWITCH_POWER_OFF) |
246 | continue; | |
247 | ||
248 | ret = drm_fb_helper_restore_fbdev_mode(helper); | |
249 | if (ret) | |
250 | error = true; | |
785b93ef DA |
251 | } |
252 | return error; | |
253 | } | |
254 | ||
255 | int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed, | |
256 | void *panic_str) | |
257 | { | |
d68752cf HD |
258 | /* |
259 | * It's a waste of time and effort to switch back to text console | |
260 | * if the kernel should reboot before panic messages can be seen. | |
261 | */ | |
262 | if (panic_timeout < 0) | |
263 | return 0; | |
264 | ||
fc2362af | 265 | printk(KERN_ERR "panic occurred, switching back to text console\n"); |
785b93ef | 266 | return drm_fb_helper_force_kernel_mode(); |
785b93ef DA |
267 | } |
268 | EXPORT_SYMBOL(drm_fb_helper_panic); | |
269 | ||
270 | static struct notifier_block paniced = { | |
271 | .notifier_call = drm_fb_helper_panic, | |
272 | }; | |
273 | ||
274 | /** | |
275 | * drm_fb_helper_restore - restore the framebuffer console (kernel) config | |
276 | * | |
277 | * Restore's the kernel's fbcon mode, used for lastclose & panic paths. | |
278 | */ | |
279 | void drm_fb_helper_restore(void) | |
280 | { | |
281 | bool ret; | |
282 | ret = drm_fb_helper_force_kernel_mode(); | |
283 | if (ret == true) | |
284 | DRM_ERROR("Failed to restore crtc configuration\n"); | |
285 | } | |
286 | EXPORT_SYMBOL(drm_fb_helper_restore); | |
287 | ||
bea1d35b | 288 | #ifdef CONFIG_MAGIC_SYSRQ |
785b93ef DA |
289 | static void drm_fb_helper_restore_work_fn(struct work_struct *ignored) |
290 | { | |
291 | drm_fb_helper_restore(); | |
292 | } | |
293 | static DECLARE_WORK(drm_fb_helper_restore_work, drm_fb_helper_restore_work_fn); | |
294 | ||
1495cc9d | 295 | static void drm_fb_helper_sysrq(int dummy1) |
785b93ef DA |
296 | { |
297 | schedule_work(&drm_fb_helper_restore_work); | |
298 | } | |
299 | ||
300 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { | |
301 | .handler = drm_fb_helper_sysrq, | |
302 | .help_msg = "force-fb(V)", | |
303 | .action_msg = "Restore framebuffer console", | |
304 | }; | |
b8c40d62 RD |
305 | #else |
306 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { }; | |
bea1d35b | 307 | #endif |
785b93ef | 308 | |
3a8148c5 | 309 | static void drm_fb_helper_dpms(struct fb_info *info, int dpms_mode) |
785b93ef DA |
310 | { |
311 | struct drm_fb_helper *fb_helper = info->par; | |
312 | struct drm_device *dev = fb_helper->dev; | |
313 | struct drm_crtc *crtc; | |
023eb571 | 314 | struct drm_connector *connector; |
023eb571 | 315 | int i, j; |
785b93ef DA |
316 | |
317 | /* | |
3a8148c5 | 318 | * For each CRTC in this fb, turn the connectors on/off. |
785b93ef | 319 | */ |
8be48d92 | 320 | mutex_lock(&dev->mode_config.mutex); |
e87b2c42 | 321 | for (i = 0; i < fb_helper->crtc_count; i++) { |
8be48d92 | 322 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
785b93ef | 323 | |
8be48d92 DA |
324 | if (!crtc->enabled) |
325 | continue; | |
326 | ||
3a8148c5 | 327 | /* Walk the connectors & encoders on this fb turning them on/off */ |
023eb571 JB |
328 | for (j = 0; j < fb_helper->connector_count; j++) { |
329 | connector = fb_helper->connector_info[j]->connector; | |
3a8148c5 | 330 | drm_helper_connector_dpms(connector, dpms_mode); |
023eb571 | 331 | drm_connector_property_set_value(connector, |
3a8148c5 | 332 | dev->mode_config.dpms_property, dpms_mode); |
785b93ef | 333 | } |
785b93ef | 334 | } |
8be48d92 | 335 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
336 | } |
337 | ||
338 | int drm_fb_helper_blank(int blank, struct fb_info *info) | |
339 | { | |
340 | switch (blank) { | |
731b5a15 | 341 | /* Display: On; HSync: On, VSync: On */ |
785b93ef | 342 | case FB_BLANK_UNBLANK: |
3a8148c5 | 343 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_ON); |
785b93ef | 344 | break; |
731b5a15 | 345 | /* Display: Off; HSync: On, VSync: On */ |
785b93ef | 346 | case FB_BLANK_NORMAL: |
3a8148c5 | 347 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_STANDBY); |
785b93ef | 348 | break; |
731b5a15 | 349 | /* Display: Off; HSync: Off, VSync: On */ |
785b93ef | 350 | case FB_BLANK_HSYNC_SUSPEND: |
3a8148c5 | 351 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_STANDBY); |
785b93ef | 352 | break; |
731b5a15 | 353 | /* Display: Off; HSync: On, VSync: Off */ |
785b93ef | 354 | case FB_BLANK_VSYNC_SUSPEND: |
3a8148c5 | 355 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_SUSPEND); |
785b93ef | 356 | break; |
731b5a15 | 357 | /* Display: Off; HSync: Off, VSync: Off */ |
785b93ef | 358 | case FB_BLANK_POWERDOWN: |
3a8148c5 | 359 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_OFF); |
785b93ef DA |
360 | break; |
361 | } | |
362 | return 0; | |
363 | } | |
364 | EXPORT_SYMBOL(drm_fb_helper_blank); | |
365 | ||
366 | static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) | |
367 | { | |
368 | int i; | |
369 | ||
0b4c0f3f DA |
370 | for (i = 0; i < helper->connector_count; i++) |
371 | kfree(helper->connector_info[i]); | |
372 | kfree(helper->connector_info); | |
a1b7736d | 373 | for (i = 0; i < helper->crtc_count; i++) { |
785b93ef | 374 | kfree(helper->crtc_info[i].mode_set.connectors); |
a1b7736d SH |
375 | if (helper->crtc_info[i].mode_set.mode) |
376 | drm_mode_destroy(helper->dev, helper->crtc_info[i].mode_set.mode); | |
377 | } | |
785b93ef DA |
378 | kfree(helper->crtc_info); |
379 | } | |
380 | ||
4abe3520 DA |
381 | int drm_fb_helper_init(struct drm_device *dev, |
382 | struct drm_fb_helper *fb_helper, | |
eb1f8e4f | 383 | int crtc_count, int max_conn_count) |
785b93ef | 384 | { |
785b93ef | 385 | struct drm_crtc *crtc; |
785b93ef DA |
386 | int i; |
387 | ||
4abe3520 | 388 | fb_helper->dev = dev; |
4abe3520 DA |
389 | |
390 | INIT_LIST_HEAD(&fb_helper->kernel_fb_list); | |
391 | ||
392 | fb_helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL); | |
393 | if (!fb_helper->crtc_info) | |
785b93ef DA |
394 | return -ENOMEM; |
395 | ||
4abe3520 DA |
396 | fb_helper->crtc_count = crtc_count; |
397 | fb_helper->connector_info = kcalloc(dev->mode_config.num_connector, sizeof(struct drm_fb_helper_connector *), GFP_KERNEL); | |
398 | if (!fb_helper->connector_info) { | |
399 | kfree(fb_helper->crtc_info); | |
0b4c0f3f DA |
400 | return -ENOMEM; |
401 | } | |
4abe3520 | 402 | fb_helper->connector_count = 0; |
785b93ef DA |
403 | |
404 | for (i = 0; i < crtc_count; i++) { | |
4abe3520 | 405 | fb_helper->crtc_info[i].mode_set.connectors = |
785b93ef DA |
406 | kcalloc(max_conn_count, |
407 | sizeof(struct drm_connector *), | |
408 | GFP_KERNEL); | |
409 | ||
4a1b0714 | 410 | if (!fb_helper->crtc_info[i].mode_set.connectors) |
785b93ef | 411 | goto out_free; |
4abe3520 | 412 | fb_helper->crtc_info[i].mode_set.num_connectors = 0; |
785b93ef DA |
413 | } |
414 | ||
415 | i = 0; | |
416 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
4abe3520 | 417 | fb_helper->crtc_info[i].mode_set.crtc = crtc; |
785b93ef DA |
418 | i++; |
419 | } | |
e9ad3181 | 420 | |
785b93ef DA |
421 | return 0; |
422 | out_free: | |
4abe3520 | 423 | drm_fb_helper_crtc_free(fb_helper); |
785b93ef DA |
424 | return -ENOMEM; |
425 | } | |
4abe3520 DA |
426 | EXPORT_SYMBOL(drm_fb_helper_init); |
427 | ||
428 | void drm_fb_helper_fini(struct drm_fb_helper *fb_helper) | |
429 | { | |
430 | if (!list_empty(&fb_helper->kernel_fb_list)) { | |
431 | list_del(&fb_helper->kernel_fb_list); | |
432 | if (list_empty(&kernel_fb_helper_list)) { | |
3da1f33e | 433 | printk(KERN_INFO "drm: unregistered panic notifier\n"); |
4abe3520 DA |
434 | atomic_notifier_chain_unregister(&panic_notifier_list, |
435 | &paniced); | |
436 | unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
437 | } | |
438 | } | |
439 | ||
440 | drm_fb_helper_crtc_free(fb_helper); | |
441 | ||
4abe3520 DA |
442 | } |
443 | EXPORT_SYMBOL(drm_fb_helper_fini); | |
785b93ef | 444 | |
c850cb78 | 445 | static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, |
b8c00ac5 DA |
446 | u16 blue, u16 regno, struct fb_info *info) |
447 | { | |
448 | struct drm_fb_helper *fb_helper = info->par; | |
449 | struct drm_framebuffer *fb = fb_helper->fb; | |
450 | int pindex; | |
451 | ||
c850cb78 DA |
452 | if (info->fix.visual == FB_VISUAL_TRUECOLOR) { |
453 | u32 *palette; | |
454 | u32 value; | |
455 | /* place color in psuedopalette */ | |
456 | if (regno > 16) | |
457 | return -EINVAL; | |
458 | palette = (u32 *)info->pseudo_palette; | |
459 | red >>= (16 - info->var.red.length); | |
460 | green >>= (16 - info->var.green.length); | |
461 | blue >>= (16 - info->var.blue.length); | |
462 | value = (red << info->var.red.offset) | | |
463 | (green << info->var.green.offset) | | |
464 | (blue << info->var.blue.offset); | |
9da12b6a RC |
465 | if (info->var.transp.length > 0) { |
466 | u32 mask = (1 << info->var.transp.length) - 1; | |
467 | mask <<= info->var.transp.offset; | |
468 | value |= mask; | |
469 | } | |
c850cb78 DA |
470 | palette[regno] = value; |
471 | return 0; | |
472 | } | |
473 | ||
b8c00ac5 DA |
474 | pindex = regno; |
475 | ||
476 | if (fb->bits_per_pixel == 16) { | |
477 | pindex = regno << 3; | |
478 | ||
479 | if (fb->depth == 16 && regno > 63) | |
c850cb78 | 480 | return -EINVAL; |
b8c00ac5 | 481 | if (fb->depth == 15 && regno > 31) |
c850cb78 | 482 | return -EINVAL; |
b8c00ac5 DA |
483 | |
484 | if (fb->depth == 16) { | |
485 | u16 r, g, b; | |
486 | int i; | |
487 | if (regno < 32) { | |
488 | for (i = 0; i < 8; i++) | |
489 | fb_helper->funcs->gamma_set(crtc, red, | |
490 | green, blue, pindex + i); | |
491 | } | |
492 | ||
493 | fb_helper->funcs->gamma_get(crtc, &r, | |
494 | &g, &b, | |
495 | pindex >> 1); | |
496 | ||
497 | for (i = 0; i < 4; i++) | |
498 | fb_helper->funcs->gamma_set(crtc, r, | |
499 | green, b, | |
500 | (pindex >> 1) + i); | |
501 | } | |
502 | } | |
503 | ||
504 | if (fb->depth != 16) | |
505 | fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex); | |
c850cb78 | 506 | return 0; |
b8c00ac5 DA |
507 | } |
508 | ||
068143d3 DA |
509 | int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) |
510 | { | |
511 | struct drm_fb_helper *fb_helper = info->par; | |
8be48d92 | 512 | struct drm_crtc_helper_funcs *crtc_funcs; |
068143d3 DA |
513 | u16 *red, *green, *blue, *transp; |
514 | struct drm_crtc *crtc; | |
062ac622 | 515 | int i, j, rc = 0; |
068143d3 DA |
516 | int start; |
517 | ||
8be48d92 DA |
518 | for (i = 0; i < fb_helper->crtc_count; i++) { |
519 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
520 | crtc_funcs = crtc->helper_private; | |
068143d3 DA |
521 | |
522 | red = cmap->red; | |
523 | green = cmap->green; | |
524 | blue = cmap->blue; | |
525 | transp = cmap->transp; | |
526 | start = cmap->start; | |
527 | ||
062ac622 | 528 | for (j = 0; j < cmap->len; j++) { |
068143d3 DA |
529 | u16 hred, hgreen, hblue, htransp = 0xffff; |
530 | ||
531 | hred = *red++; | |
532 | hgreen = *green++; | |
533 | hblue = *blue++; | |
534 | ||
535 | if (transp) | |
536 | htransp = *transp++; | |
537 | ||
c850cb78 DA |
538 | rc = setcolreg(crtc, hred, hgreen, hblue, start++, info); |
539 | if (rc) | |
540 | return rc; | |
068143d3 DA |
541 | } |
542 | crtc_funcs->load_lut(crtc); | |
543 | } | |
544 | return rc; | |
545 | } | |
546 | EXPORT_SYMBOL(drm_fb_helper_setcmap); | |
547 | ||
785b93ef DA |
548 | int drm_fb_helper_check_var(struct fb_var_screeninfo *var, |
549 | struct fb_info *info) | |
550 | { | |
551 | struct drm_fb_helper *fb_helper = info->par; | |
552 | struct drm_framebuffer *fb = fb_helper->fb; | |
553 | int depth; | |
554 | ||
f90ebd9e | 555 | if (var->pixclock != 0 || in_dbg_master()) |
785b93ef DA |
556 | return -EINVAL; |
557 | ||
558 | /* Need to resize the fb object !!! */ | |
62fb376e CW |
559 | if (var->bits_per_pixel > fb->bits_per_pixel || |
560 | var->xres > fb->width || var->yres > fb->height || | |
561 | var->xres_virtual > fb->width || var->yres_virtual > fb->height) { | |
509c7d83 | 562 | DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb " |
62fb376e CW |
563 | "request %dx%d-%d (virtual %dx%d) > %dx%d-%d\n", |
564 | var->xres, var->yres, var->bits_per_pixel, | |
565 | var->xres_virtual, var->yres_virtual, | |
509c7d83 | 566 | fb->width, fb->height, fb->bits_per_pixel); |
785b93ef DA |
567 | return -EINVAL; |
568 | } | |
569 | ||
570 | switch (var->bits_per_pixel) { | |
571 | case 16: | |
572 | depth = (var->green.length == 6) ? 16 : 15; | |
573 | break; | |
574 | case 32: | |
575 | depth = (var->transp.length > 0) ? 32 : 24; | |
576 | break; | |
577 | default: | |
578 | depth = var->bits_per_pixel; | |
579 | break; | |
580 | } | |
581 | ||
582 | switch (depth) { | |
583 | case 8: | |
584 | var->red.offset = 0; | |
585 | var->green.offset = 0; | |
586 | var->blue.offset = 0; | |
587 | var->red.length = 8; | |
588 | var->green.length = 8; | |
589 | var->blue.length = 8; | |
590 | var->transp.length = 0; | |
591 | var->transp.offset = 0; | |
592 | break; | |
593 | case 15: | |
594 | var->red.offset = 10; | |
595 | var->green.offset = 5; | |
596 | var->blue.offset = 0; | |
597 | var->red.length = 5; | |
598 | var->green.length = 5; | |
599 | var->blue.length = 5; | |
600 | var->transp.length = 1; | |
601 | var->transp.offset = 15; | |
602 | break; | |
603 | case 16: | |
604 | var->red.offset = 11; | |
605 | var->green.offset = 5; | |
606 | var->blue.offset = 0; | |
607 | var->red.length = 5; | |
608 | var->green.length = 6; | |
609 | var->blue.length = 5; | |
610 | var->transp.length = 0; | |
611 | var->transp.offset = 0; | |
612 | break; | |
613 | case 24: | |
614 | var->red.offset = 16; | |
615 | var->green.offset = 8; | |
616 | var->blue.offset = 0; | |
617 | var->red.length = 8; | |
618 | var->green.length = 8; | |
619 | var->blue.length = 8; | |
620 | var->transp.length = 0; | |
621 | var->transp.offset = 0; | |
622 | break; | |
623 | case 32: | |
624 | var->red.offset = 16; | |
625 | var->green.offset = 8; | |
626 | var->blue.offset = 0; | |
627 | var->red.length = 8; | |
628 | var->green.length = 8; | |
629 | var->blue.length = 8; | |
630 | var->transp.length = 8; | |
631 | var->transp.offset = 24; | |
632 | break; | |
633 | default: | |
634 | return -EINVAL; | |
635 | } | |
636 | return 0; | |
637 | } | |
638 | EXPORT_SYMBOL(drm_fb_helper_check_var); | |
639 | ||
640 | /* this will let fbcon do the mode init */ | |
641 | int drm_fb_helper_set_par(struct fb_info *info) | |
642 | { | |
643 | struct drm_fb_helper *fb_helper = info->par; | |
644 | struct drm_device *dev = fb_helper->dev; | |
645 | struct fb_var_screeninfo *var = &info->var; | |
646 | struct drm_crtc *crtc; | |
647 | int ret; | |
648 | int i; | |
649 | ||
5349ef31 | 650 | if (var->pixclock != 0) { |
172e91f5 | 651 | DRM_ERROR("PIXEL CLOCK SET\n"); |
785b93ef DA |
652 | return -EINVAL; |
653 | } | |
654 | ||
8be48d92 DA |
655 | mutex_lock(&dev->mode_config.mutex); |
656 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
657 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
0b4c0f3f DA |
658 | ret = crtc->funcs->set_config(&fb_helper->crtc_info[i].mode_set); |
659 | if (ret) { | |
785b93ef | 660 | mutex_unlock(&dev->mode_config.mutex); |
0b4c0f3f | 661 | return ret; |
785b93ef DA |
662 | } |
663 | } | |
8be48d92 | 664 | mutex_unlock(&dev->mode_config.mutex); |
4abe3520 DA |
665 | |
666 | if (fb_helper->delayed_hotplug) { | |
667 | fb_helper->delayed_hotplug = false; | |
eb1f8e4f | 668 | drm_fb_helper_hotplug_event(fb_helper); |
4abe3520 | 669 | } |
785b93ef DA |
670 | return 0; |
671 | } | |
672 | EXPORT_SYMBOL(drm_fb_helper_set_par); | |
673 | ||
674 | int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, | |
675 | struct fb_info *info) | |
676 | { | |
677 | struct drm_fb_helper *fb_helper = info->par; | |
678 | struct drm_device *dev = fb_helper->dev; | |
679 | struct drm_mode_set *modeset; | |
680 | struct drm_crtc *crtc; | |
681 | int ret = 0; | |
682 | int i; | |
683 | ||
8be48d92 DA |
684 | mutex_lock(&dev->mode_config.mutex); |
685 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
686 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
785b93ef DA |
687 | |
688 | modeset = &fb_helper->crtc_info[i].mode_set; | |
689 | ||
690 | modeset->x = var->xoffset; | |
691 | modeset->y = var->yoffset; | |
692 | ||
693 | if (modeset->num_connectors) { | |
785b93ef | 694 | ret = crtc->funcs->set_config(modeset); |
785b93ef DA |
695 | if (!ret) { |
696 | info->var.xoffset = var->xoffset; | |
697 | info->var.yoffset = var->yoffset; | |
698 | } | |
699 | } | |
700 | } | |
8be48d92 | 701 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
702 | return ret; |
703 | } | |
704 | EXPORT_SYMBOL(drm_fb_helper_pan_display); | |
705 | ||
8be48d92 DA |
706 | int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, |
707 | int preferred_bpp) | |
785b93ef | 708 | { |
785b93ef DA |
709 | int new_fb = 0; |
710 | int crtc_count = 0; | |
4abe3520 | 711 | int i; |
785b93ef | 712 | struct fb_info *info; |
38651674 | 713 | struct drm_fb_helper_surface_size sizes; |
8be48d92 | 714 | int gamma_size = 0; |
38651674 DA |
715 | |
716 | memset(&sizes, 0, sizeof(struct drm_fb_helper_surface_size)); | |
717 | sizes.surface_depth = 24; | |
718 | sizes.surface_bpp = 32; | |
719 | sizes.fb_width = (unsigned)-1; | |
720 | sizes.fb_height = (unsigned)-1; | |
785b93ef | 721 | |
b8c00ac5 DA |
722 | /* if driver picks 8 or 16 by default use that |
723 | for both depth/bpp */ | |
38651674 DA |
724 | if (preferred_bpp != sizes.surface_bpp) { |
725 | sizes.surface_depth = sizes.surface_bpp = preferred_bpp; | |
b8c00ac5 | 726 | } |
785b93ef | 727 | /* first up get a count of crtcs now in use and new min/maxes width/heights */ |
0b4c0f3f DA |
728 | for (i = 0; i < fb_helper->connector_count; i++) { |
729 | struct drm_fb_helper_connector *fb_helper_conn = fb_helper->connector_info[i]; | |
1794d257 | 730 | struct drm_cmdline_mode *cmdline_mode; |
8ef8678c | 731 | |
0b4c0f3f | 732 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
d50ba256 DA |
733 | |
734 | if (cmdline_mode->bpp_specified) { | |
735 | switch (cmdline_mode->bpp) { | |
736 | case 8: | |
38651674 | 737 | sizes.surface_depth = sizes.surface_bpp = 8; |
d50ba256 DA |
738 | break; |
739 | case 15: | |
38651674 DA |
740 | sizes.surface_depth = 15; |
741 | sizes.surface_bpp = 16; | |
d50ba256 DA |
742 | break; |
743 | case 16: | |
38651674 | 744 | sizes.surface_depth = sizes.surface_bpp = 16; |
d50ba256 DA |
745 | break; |
746 | case 24: | |
38651674 | 747 | sizes.surface_depth = sizes.surface_bpp = 24; |
d50ba256 DA |
748 | break; |
749 | case 32: | |
38651674 DA |
750 | sizes.surface_depth = 24; |
751 | sizes.surface_bpp = 32; | |
d50ba256 DA |
752 | break; |
753 | } | |
754 | break; | |
755 | } | |
756 | } | |
757 | ||
8be48d92 DA |
758 | crtc_count = 0; |
759 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
760 | struct drm_display_mode *desired_mode; | |
761 | desired_mode = fb_helper->crtc_info[i].desired_mode; | |
762 | ||
763 | if (desired_mode) { | |
764 | if (gamma_size == 0) | |
765 | gamma_size = fb_helper->crtc_info[i].mode_set.crtc->gamma_size; | |
766 | if (desired_mode->hdisplay < sizes.fb_width) | |
767 | sizes.fb_width = desired_mode->hdisplay; | |
768 | if (desired_mode->vdisplay < sizes.fb_height) | |
769 | sizes.fb_height = desired_mode->vdisplay; | |
770 | if (desired_mode->hdisplay > sizes.surface_width) | |
771 | sizes.surface_width = desired_mode->hdisplay; | |
772 | if (desired_mode->vdisplay > sizes.surface_height) | |
773 | sizes.surface_height = desired_mode->vdisplay; | |
785b93ef DA |
774 | crtc_count++; |
775 | } | |
776 | } | |
777 | ||
38651674 | 778 | if (crtc_count == 0 || sizes.fb_width == -1 || sizes.fb_height == -1) { |
785b93ef DA |
779 | /* hmm everyone went away - assume VGA cable just fell out |
780 | and will come back later. */ | |
eb1f8e4f | 781 | DRM_INFO("Cannot find any crtc or sizes - going 1024x768\n"); |
19b4b445 DA |
782 | sizes.fb_width = sizes.surface_width = 1024; |
783 | sizes.fb_height = sizes.surface_height = 768; | |
785b93ef DA |
784 | } |
785 | ||
38651674 | 786 | /* push down into drivers */ |
4abe3520 | 787 | new_fb = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes); |
38651674 DA |
788 | if (new_fb < 0) |
789 | return new_fb; | |
785b93ef | 790 | |
38651674 | 791 | info = fb_helper->fbdev; |
785b93ef | 792 | |
8be48d92 DA |
793 | /* set the fb pointer */ |
794 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
795 | fb_helper->crtc_info[i].mode_set.fb = fb_helper->fb; | |
785b93ef | 796 | } |
785b93ef DA |
797 | |
798 | if (new_fb) { | |
5349ef31 | 799 | info->var.pixclock = 0; |
3bea21b6 | 800 | if (register_framebuffer(info) < 0) { |
785b93ef | 801 | return -EINVAL; |
3bea21b6 | 802 | } |
38651674 DA |
803 | |
804 | printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, | |
805 | info->fix.id); | |
806 | ||
785b93ef DA |
807 | } else { |
808 | drm_fb_helper_set_par(info); | |
809 | } | |
785b93ef DA |
810 | |
811 | /* Switch back to kernel console on panic */ | |
812 | /* multi card linked list maybe */ | |
813 | if (list_empty(&kernel_fb_helper_list)) { | |
3da1f33e | 814 | printk(KERN_INFO "drm: registered panic notifier\n"); |
785b93ef DA |
815 | atomic_notifier_chain_register(&panic_notifier_list, |
816 | &paniced); | |
817 | register_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
818 | } | |
38651674 DA |
819 | if (new_fb) |
820 | list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list); | |
821 | ||
785b93ef DA |
822 | return 0; |
823 | } | |
824 | EXPORT_SYMBOL(drm_fb_helper_single_fb_probe); | |
825 | ||
3632ef89 DA |
826 | void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, |
827 | uint32_t depth) | |
828 | { | |
829 | info->fix.type = FB_TYPE_PACKED_PIXELS; | |
830 | info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR : | |
831 | FB_VISUAL_TRUECOLOR; | |
832 | info->fix.mmio_start = 0; | |
833 | info->fix.mmio_len = 0; | |
834 | info->fix.type_aux = 0; | |
835 | info->fix.xpanstep = 1; /* doing it in hw */ | |
836 | info->fix.ypanstep = 1; /* doing it in hw */ | |
837 | info->fix.ywrapstep = 0; | |
838 | info->fix.accel = FB_ACCEL_NONE; | |
839 | info->fix.type_aux = 0; | |
840 | ||
841 | info->fix.line_length = pitch; | |
842 | return; | |
843 | } | |
844 | EXPORT_SYMBOL(drm_fb_helper_fill_fix); | |
845 | ||
38651674 | 846 | void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, |
785b93ef DA |
847 | uint32_t fb_width, uint32_t fb_height) |
848 | { | |
38651674 DA |
849 | struct drm_framebuffer *fb = fb_helper->fb; |
850 | info->pseudo_palette = fb_helper->pseudo_palette; | |
785b93ef DA |
851 | info->var.xres_virtual = fb->width; |
852 | info->var.yres_virtual = fb->height; | |
853 | info->var.bits_per_pixel = fb->bits_per_pixel; | |
57084d05 | 854 | info->var.accel_flags = FB_ACCELF_TEXT; |
785b93ef DA |
855 | info->var.xoffset = 0; |
856 | info->var.yoffset = 0; | |
857 | info->var.activate = FB_ACTIVATE_NOW; | |
858 | info->var.height = -1; | |
859 | info->var.width = -1; | |
860 | ||
861 | switch (fb->depth) { | |
862 | case 8: | |
863 | info->var.red.offset = 0; | |
864 | info->var.green.offset = 0; | |
865 | info->var.blue.offset = 0; | |
866 | info->var.red.length = 8; /* 8bit DAC */ | |
867 | info->var.green.length = 8; | |
868 | info->var.blue.length = 8; | |
869 | info->var.transp.offset = 0; | |
870 | info->var.transp.length = 0; | |
871 | break; | |
872 | case 15: | |
873 | info->var.red.offset = 10; | |
874 | info->var.green.offset = 5; | |
875 | info->var.blue.offset = 0; | |
876 | info->var.red.length = 5; | |
877 | info->var.green.length = 5; | |
878 | info->var.blue.length = 5; | |
879 | info->var.transp.offset = 15; | |
880 | info->var.transp.length = 1; | |
881 | break; | |
882 | case 16: | |
883 | info->var.red.offset = 11; | |
884 | info->var.green.offset = 5; | |
885 | info->var.blue.offset = 0; | |
886 | info->var.red.length = 5; | |
887 | info->var.green.length = 6; | |
888 | info->var.blue.length = 5; | |
889 | info->var.transp.offset = 0; | |
890 | break; | |
891 | case 24: | |
892 | info->var.red.offset = 16; | |
893 | info->var.green.offset = 8; | |
894 | info->var.blue.offset = 0; | |
895 | info->var.red.length = 8; | |
896 | info->var.green.length = 8; | |
897 | info->var.blue.length = 8; | |
898 | info->var.transp.offset = 0; | |
899 | info->var.transp.length = 0; | |
900 | break; | |
901 | case 32: | |
902 | info->var.red.offset = 16; | |
903 | info->var.green.offset = 8; | |
904 | info->var.blue.offset = 0; | |
905 | info->var.red.length = 8; | |
906 | info->var.green.length = 8; | |
907 | info->var.blue.length = 8; | |
908 | info->var.transp.offset = 24; | |
909 | info->var.transp.length = 8; | |
910 | break; | |
911 | default: | |
912 | break; | |
913 | } | |
914 | ||
915 | info->var.xres = fb_width; | |
916 | info->var.yres = fb_height; | |
917 | } | |
918 | EXPORT_SYMBOL(drm_fb_helper_fill_var); | |
38651674 | 919 | |
0b4c0f3f DA |
920 | static int drm_fb_helper_probe_connector_modes(struct drm_fb_helper *fb_helper, |
921 | uint32_t maxX, | |
922 | uint32_t maxY) | |
38651674 DA |
923 | { |
924 | struct drm_connector *connector; | |
925 | int count = 0; | |
0b4c0f3f | 926 | int i; |
38651674 | 927 | |
0b4c0f3f DA |
928 | for (i = 0; i < fb_helper->connector_count; i++) { |
929 | connector = fb_helper->connector_info[i]->connector; | |
38651674 DA |
930 | count += connector->funcs->fill_modes(connector, maxX, maxY); |
931 | } | |
932 | ||
933 | return count; | |
934 | } | |
935 | ||
0b4c0f3f | 936 | static struct drm_display_mode *drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, int width, int height) |
38651674 DA |
937 | { |
938 | struct drm_display_mode *mode; | |
939 | ||
0b4c0f3f | 940 | list_for_each_entry(mode, &fb_connector->connector->modes, head) { |
38651674 DA |
941 | if (drm_mode_width(mode) > width || |
942 | drm_mode_height(mode) > height) | |
943 | continue; | |
944 | if (mode->type & DRM_MODE_TYPE_PREFERRED) | |
945 | return mode; | |
946 | } | |
947 | return NULL; | |
948 | } | |
949 | ||
0b4c0f3f | 950 | static bool drm_has_cmdline_mode(struct drm_fb_helper_connector *fb_connector) |
38651674 | 951 | { |
1794d257 | 952 | struct drm_cmdline_mode *cmdline_mode; |
0b4c0f3f | 953 | cmdline_mode = &fb_connector->cmdline_mode; |
38651674 DA |
954 | return cmdline_mode->specified; |
955 | } | |
956 | ||
0b4c0f3f DA |
957 | static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn, |
958 | int width, int height) | |
38651674 | 959 | { |
1794d257 | 960 | struct drm_cmdline_mode *cmdline_mode; |
38651674 DA |
961 | struct drm_display_mode *mode = NULL; |
962 | ||
0b4c0f3f | 963 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
38651674 DA |
964 | if (cmdline_mode->specified == false) |
965 | return mode; | |
966 | ||
967 | /* attempt to find a matching mode in the list of modes | |
968 | * we have gotten so far, if not add a CVT mode that conforms | |
969 | */ | |
970 | if (cmdline_mode->rb || cmdline_mode->margins) | |
971 | goto create_mode; | |
972 | ||
0b4c0f3f | 973 | list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { |
38651674 DA |
974 | /* check width/height */ |
975 | if (mode->hdisplay != cmdline_mode->xres || | |
976 | mode->vdisplay != cmdline_mode->yres) | |
977 | continue; | |
978 | ||
979 | if (cmdline_mode->refresh_specified) { | |
980 | if (mode->vrefresh != cmdline_mode->refresh) | |
981 | continue; | |
982 | } | |
983 | ||
984 | if (cmdline_mode->interlace) { | |
985 | if (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) | |
986 | continue; | |
987 | } | |
988 | return mode; | |
989 | } | |
990 | ||
991 | create_mode: | |
1794d257 CW |
992 | mode = drm_mode_create_from_cmdline_mode(fb_helper_conn->connector->dev, |
993 | cmdline_mode); | |
0b4c0f3f | 994 | list_add(&mode->head, &fb_helper_conn->connector->modes); |
38651674 DA |
995 | return mode; |
996 | } | |
997 | ||
998 | static bool drm_connector_enabled(struct drm_connector *connector, bool strict) | |
999 | { | |
1000 | bool enable; | |
1001 | ||
1002 | if (strict) { | |
1003 | enable = connector->status == connector_status_connected; | |
1004 | } else { | |
1005 | enable = connector->status != connector_status_disconnected; | |
1006 | } | |
1007 | return enable; | |
1008 | } | |
1009 | ||
0b4c0f3f DA |
1010 | static void drm_enable_connectors(struct drm_fb_helper *fb_helper, |
1011 | bool *enabled) | |
38651674 DA |
1012 | { |
1013 | bool any_enabled = false; | |
1014 | struct drm_connector *connector; | |
1015 | int i = 0; | |
1016 | ||
0b4c0f3f DA |
1017 | for (i = 0; i < fb_helper->connector_count; i++) { |
1018 | connector = fb_helper->connector_info[i]->connector; | |
38651674 DA |
1019 | enabled[i] = drm_connector_enabled(connector, true); |
1020 | DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, | |
1021 | enabled[i] ? "yes" : "no"); | |
1022 | any_enabled |= enabled[i]; | |
38651674 DA |
1023 | } |
1024 | ||
1025 | if (any_enabled) | |
1026 | return; | |
1027 | ||
0b4c0f3f DA |
1028 | for (i = 0; i < fb_helper->connector_count; i++) { |
1029 | connector = fb_helper->connector_info[i]->connector; | |
38651674 | 1030 | enabled[i] = drm_connector_enabled(connector, false); |
38651674 DA |
1031 | } |
1032 | } | |
1033 | ||
1d42bbc8 DA |
1034 | static bool drm_target_cloned(struct drm_fb_helper *fb_helper, |
1035 | struct drm_display_mode **modes, | |
1036 | bool *enabled, int width, int height) | |
1037 | { | |
1038 | int count, i, j; | |
1039 | bool can_clone = false; | |
1040 | struct drm_fb_helper_connector *fb_helper_conn; | |
1041 | struct drm_display_mode *dmt_mode, *mode; | |
1042 | ||
1043 | /* only contemplate cloning in the single crtc case */ | |
1044 | if (fb_helper->crtc_count > 1) | |
1045 | return false; | |
1046 | ||
1047 | count = 0; | |
1048 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1049 | if (enabled[i]) | |
1050 | count++; | |
1051 | } | |
1052 | ||
1053 | /* only contemplate cloning if more than one connector is enabled */ | |
1054 | if (count <= 1) | |
1055 | return false; | |
1056 | ||
1057 | /* check the command line or if nothing common pick 1024x768 */ | |
1058 | can_clone = true; | |
1059 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1060 | if (!enabled[i]) | |
1061 | continue; | |
1062 | fb_helper_conn = fb_helper->connector_info[i]; | |
1063 | modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); | |
1064 | if (!modes[i]) { | |
1065 | can_clone = false; | |
1066 | break; | |
1067 | } | |
1068 | for (j = 0; j < i; j++) { | |
1069 | if (!enabled[j]) | |
1070 | continue; | |
1071 | if (!drm_mode_equal(modes[j], modes[i])) | |
1072 | can_clone = false; | |
1073 | } | |
1074 | } | |
1075 | ||
1076 | if (can_clone) { | |
1077 | DRM_DEBUG_KMS("can clone using command line\n"); | |
1078 | return true; | |
1079 | } | |
1080 | ||
1081 | /* try and find a 1024x768 mode on each connector */ | |
1082 | can_clone = true; | |
f6e252ba | 1083 | dmt_mode = drm_mode_find_dmt(fb_helper->dev, 1024, 768, 60, false); |
1d42bbc8 DA |
1084 | |
1085 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1086 | ||
1087 | if (!enabled[i]) | |
1088 | continue; | |
1089 | ||
1090 | fb_helper_conn = fb_helper->connector_info[i]; | |
1091 | list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { | |
1092 | if (drm_mode_equal(mode, dmt_mode)) | |
1093 | modes[i] = mode; | |
1094 | } | |
1095 | if (!modes[i]) | |
1096 | can_clone = false; | |
1097 | } | |
1098 | ||
1099 | if (can_clone) { | |
1100 | DRM_DEBUG_KMS("can clone using 1024x768\n"); | |
1101 | return true; | |
1102 | } | |
1103 | DRM_INFO("kms: can't enable cloning when we probably wanted to.\n"); | |
1104 | return false; | |
1105 | } | |
1106 | ||
0b4c0f3f | 1107 | static bool drm_target_preferred(struct drm_fb_helper *fb_helper, |
38651674 DA |
1108 | struct drm_display_mode **modes, |
1109 | bool *enabled, int width, int height) | |
1110 | { | |
0b4c0f3f DA |
1111 | struct drm_fb_helper_connector *fb_helper_conn; |
1112 | int i; | |
38651674 | 1113 | |
0b4c0f3f DA |
1114 | for (i = 0; i < fb_helper->connector_count; i++) { |
1115 | fb_helper_conn = fb_helper->connector_info[i]; | |
38651674 | 1116 | |
0b4c0f3f | 1117 | if (enabled[i] == false) |
38651674 | 1118 | continue; |
38651674 DA |
1119 | |
1120 | DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n", | |
0b4c0f3f | 1121 | fb_helper_conn->connector->base.id); |
38651674 DA |
1122 | |
1123 | /* got for command line mode first */ | |
0b4c0f3f | 1124 | modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); |
38651674 DA |
1125 | if (!modes[i]) { |
1126 | DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", | |
0b4c0f3f DA |
1127 | fb_helper_conn->connector->base.id); |
1128 | modes[i] = drm_has_preferred_mode(fb_helper_conn, width, height); | |
38651674 DA |
1129 | } |
1130 | /* No preferred modes, pick one off the list */ | |
0b4c0f3f DA |
1131 | if (!modes[i] && !list_empty(&fb_helper_conn->connector->modes)) { |
1132 | list_for_each_entry(modes[i], &fb_helper_conn->connector->modes, head) | |
38651674 DA |
1133 | break; |
1134 | } | |
1135 | DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : | |
1136 | "none"); | |
38651674 DA |
1137 | } |
1138 | return true; | |
1139 | } | |
1140 | ||
8be48d92 DA |
1141 | static int drm_pick_crtcs(struct drm_fb_helper *fb_helper, |
1142 | struct drm_fb_helper_crtc **best_crtcs, | |
38651674 DA |
1143 | struct drm_display_mode **modes, |
1144 | int n, int width, int height) | |
1145 | { | |
1146 | int c, o; | |
8be48d92 | 1147 | struct drm_device *dev = fb_helper->dev; |
38651674 DA |
1148 | struct drm_connector *connector; |
1149 | struct drm_connector_helper_funcs *connector_funcs; | |
1150 | struct drm_encoder *encoder; | |
8be48d92 | 1151 | struct drm_fb_helper_crtc *best_crtc; |
38651674 | 1152 | int my_score, best_score, score; |
8be48d92 | 1153 | struct drm_fb_helper_crtc **crtcs, *crtc; |
0b4c0f3f | 1154 | struct drm_fb_helper_connector *fb_helper_conn; |
38651674 | 1155 | |
0b4c0f3f | 1156 | if (n == fb_helper->connector_count) |
38651674 | 1157 | return 0; |
0b4c0f3f DA |
1158 | |
1159 | fb_helper_conn = fb_helper->connector_info[n]; | |
1160 | connector = fb_helper_conn->connector; | |
38651674 DA |
1161 | |
1162 | best_crtcs[n] = NULL; | |
1163 | best_crtc = NULL; | |
8be48d92 | 1164 | best_score = drm_pick_crtcs(fb_helper, best_crtcs, modes, n+1, width, height); |
38651674 DA |
1165 | if (modes[n] == NULL) |
1166 | return best_score; | |
1167 | ||
8be48d92 DA |
1168 | crtcs = kzalloc(dev->mode_config.num_connector * |
1169 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); | |
38651674 DA |
1170 | if (!crtcs) |
1171 | return best_score; | |
1172 | ||
1173 | my_score = 1; | |
1174 | if (connector->status == connector_status_connected) | |
1175 | my_score++; | |
0b4c0f3f | 1176 | if (drm_has_cmdline_mode(fb_helper_conn)) |
38651674 | 1177 | my_score++; |
0b4c0f3f | 1178 | if (drm_has_preferred_mode(fb_helper_conn, width, height)) |
38651674 DA |
1179 | my_score++; |
1180 | ||
1181 | connector_funcs = connector->helper_private; | |
1182 | encoder = connector_funcs->best_encoder(connector); | |
1183 | if (!encoder) | |
1184 | goto out; | |
1185 | ||
38651674 DA |
1186 | /* select a crtc for this connector and then attempt to configure |
1187 | remaining connectors */ | |
8be48d92 DA |
1188 | for (c = 0; c < fb_helper->crtc_count; c++) { |
1189 | crtc = &fb_helper->crtc_info[c]; | |
38651674 DA |
1190 | |
1191 | if ((encoder->possible_crtcs & (1 << c)) == 0) { | |
38651674 DA |
1192 | continue; |
1193 | } | |
1194 | ||
1195 | for (o = 0; o < n; o++) | |
1196 | if (best_crtcs[o] == crtc) | |
1197 | break; | |
1198 | ||
1199 | if (o < n) { | |
1d42bbc8 DA |
1200 | /* ignore cloning unless only a single crtc */ |
1201 | if (fb_helper->crtc_count > 1) | |
1202 | continue; | |
1203 | ||
1204 | if (!drm_mode_equal(modes[o], modes[n])) | |
1205 | continue; | |
38651674 DA |
1206 | } |
1207 | ||
1208 | crtcs[n] = crtc; | |
8be48d92 DA |
1209 | memcpy(crtcs, best_crtcs, n * sizeof(struct drm_fb_helper_crtc *)); |
1210 | score = my_score + drm_pick_crtcs(fb_helper, crtcs, modes, n + 1, | |
38651674 DA |
1211 | width, height); |
1212 | if (score > best_score) { | |
1213 | best_crtc = crtc; | |
1214 | best_score = score; | |
1215 | memcpy(best_crtcs, crtcs, | |
1216 | dev->mode_config.num_connector * | |
8be48d92 | 1217 | sizeof(struct drm_fb_helper_crtc *)); |
38651674 | 1218 | } |
38651674 DA |
1219 | } |
1220 | out: | |
1221 | kfree(crtcs); | |
1222 | return best_score; | |
1223 | } | |
1224 | ||
8be48d92 | 1225 | static void drm_setup_crtcs(struct drm_fb_helper *fb_helper) |
38651674 | 1226 | { |
8be48d92 DA |
1227 | struct drm_device *dev = fb_helper->dev; |
1228 | struct drm_fb_helper_crtc **crtcs; | |
38651674 DA |
1229 | struct drm_display_mode **modes; |
1230 | struct drm_encoder *encoder; | |
8be48d92 | 1231 | struct drm_mode_set *modeset; |
38651674 DA |
1232 | bool *enabled; |
1233 | int width, height; | |
1234 | int i, ret; | |
1235 | ||
1236 | DRM_DEBUG_KMS("\n"); | |
1237 | ||
1238 | width = dev->mode_config.max_width; | |
1239 | height = dev->mode_config.max_height; | |
1240 | ||
1241 | /* clean out all the encoder/crtc combos */ | |
1242 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
1243 | encoder->crtc = NULL; | |
1244 | } | |
1245 | ||
1246 | crtcs = kcalloc(dev->mode_config.num_connector, | |
8be48d92 | 1247 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); |
38651674 DA |
1248 | modes = kcalloc(dev->mode_config.num_connector, |
1249 | sizeof(struct drm_display_mode *), GFP_KERNEL); | |
1250 | enabled = kcalloc(dev->mode_config.num_connector, | |
1251 | sizeof(bool), GFP_KERNEL); | |
1252 | ||
0b4c0f3f | 1253 | drm_enable_connectors(fb_helper, enabled); |
38651674 | 1254 | |
1d42bbc8 DA |
1255 | ret = drm_target_cloned(fb_helper, modes, enabled, width, height); |
1256 | if (!ret) { | |
1257 | ret = drm_target_preferred(fb_helper, modes, enabled, width, height); | |
1258 | if (!ret) | |
1259 | DRM_ERROR("Unable to find initial modes\n"); | |
1260 | } | |
38651674 DA |
1261 | |
1262 | DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height); | |
1263 | ||
8be48d92 DA |
1264 | drm_pick_crtcs(fb_helper, crtcs, modes, 0, width, height); |
1265 | ||
1266 | /* need to set the modesets up here for use later */ | |
1267 | /* fill out the connector<->crtc mappings into the modesets */ | |
1268 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
1269 | modeset = &fb_helper->crtc_info[i].mode_set; | |
1270 | modeset->num_connectors = 0; | |
1271 | } | |
38651674 | 1272 | |
0b4c0f3f | 1273 | for (i = 0; i < fb_helper->connector_count; i++) { |
38651674 | 1274 | struct drm_display_mode *mode = modes[i]; |
8be48d92 DA |
1275 | struct drm_fb_helper_crtc *fb_crtc = crtcs[i]; |
1276 | modeset = &fb_crtc->mode_set; | |
38651674 | 1277 | |
8be48d92 | 1278 | if (mode && fb_crtc) { |
38651674 | 1279 | DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", |
8be48d92 DA |
1280 | mode->name, fb_crtc->mode_set.crtc->base.id); |
1281 | fb_crtc->desired_mode = mode; | |
1282 | if (modeset->mode) | |
1283 | drm_mode_destroy(dev, modeset->mode); | |
1284 | modeset->mode = drm_mode_duplicate(dev, | |
1285 | fb_crtc->desired_mode); | |
0b4c0f3f | 1286 | modeset->connectors[modeset->num_connectors++] = fb_helper->connector_info[i]->connector; |
38651674 | 1287 | } |
38651674 DA |
1288 | } |
1289 | ||
1290 | kfree(crtcs); | |
1291 | kfree(modes); | |
1292 | kfree(enabled); | |
1293 | } | |
1294 | ||
1295 | /** | |
1296 | * drm_helper_initial_config - setup a sane initial connector configuration | |
1297 | * @dev: DRM device | |
1298 | * | |
1299 | * LOCKING: | |
1300 | * Called at init time, must take mode config lock. | |
1301 | * | |
1302 | * Scan the CRTCs and connectors and try to put together an initial setup. | |
1303 | * At the moment, this is a cloned configuration across all heads with | |
1304 | * a new framebuffer object as the backing store. | |
1305 | * | |
1306 | * RETURNS: | |
1307 | * Zero if everything went ok, nonzero otherwise. | |
1308 | */ | |
4abe3520 | 1309 | bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel) |
38651674 | 1310 | { |
8be48d92 | 1311 | struct drm_device *dev = fb_helper->dev; |
38651674 DA |
1312 | int count = 0; |
1313 | ||
1314 | /* disable all the possible outputs/crtcs before entering KMS mode */ | |
8be48d92 | 1315 | drm_helper_disable_unused_functions(fb_helper->dev); |
38651674 | 1316 | |
0b4c0f3f | 1317 | drm_fb_helper_parse_command_line(fb_helper); |
38651674 | 1318 | |
0b4c0f3f DA |
1319 | count = drm_fb_helper_probe_connector_modes(fb_helper, |
1320 | dev->mode_config.max_width, | |
1321 | dev->mode_config.max_height); | |
38651674 DA |
1322 | /* |
1323 | * we shouldn't end up with no modes here. | |
1324 | */ | |
5c4426a7 | 1325 | if (count == 0) { |
eb1f8e4f | 1326 | printk(KERN_INFO "No connectors reported connected with modes\n"); |
5c4426a7 | 1327 | } |
8be48d92 | 1328 | drm_setup_crtcs(fb_helper); |
38651674 | 1329 | |
4abe3520 | 1330 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
38651674 | 1331 | } |
8be48d92 | 1332 | EXPORT_SYMBOL(drm_fb_helper_initial_config); |
38651674 | 1333 | |
7394371d CW |
1334 | /** |
1335 | * drm_fb_helper_hotplug_event - respond to a hotplug notification by | |
1336 | * probing all the outputs attached to the fb. | |
1337 | * @fb_helper: the drm_fb_helper | |
1338 | * | |
1339 | * LOCKING: | |
1340 | * Called at runtime, must take mode config lock. | |
1341 | * | |
1342 | * Scan the connectors attached to the fb_helper and try to put together a | |
1343 | * setup after *notification of a change in output configuration. | |
1344 | * | |
1345 | * RETURNS: | |
1346 | * 0 on success and a non-zero error code otherwise. | |
1347 | */ | |
1348 | int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper) | |
38651674 | 1349 | { |
7394371d | 1350 | struct drm_device *dev = fb_helper->dev; |
5c4426a7 | 1351 | int count = 0; |
4abe3520 | 1352 | u32 max_width, max_height, bpp_sel; |
4abe3520 DA |
1353 | bool bound = false, crtcs_bound = false; |
1354 | struct drm_crtc *crtc; | |
5c4426a7 | 1355 | |
eb1f8e4f | 1356 | if (!fb_helper->fb) |
7394371d | 1357 | return 0; |
4abe3520 | 1358 | |
7394371d CW |
1359 | mutex_lock(&dev->mode_config.mutex); |
1360 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
4abe3520 DA |
1361 | if (crtc->fb) |
1362 | crtcs_bound = true; | |
1363 | if (crtc->fb == fb_helper->fb) | |
1364 | bound = true; | |
1365 | } | |
1366 | ||
eb1f8e4f | 1367 | if (!bound && crtcs_bound) { |
4abe3520 | 1368 | fb_helper->delayed_hotplug = true; |
7394371d CW |
1369 | mutex_unlock(&dev->mode_config.mutex); |
1370 | return 0; | |
4abe3520 | 1371 | } |
eb1f8e4f | 1372 | DRM_DEBUG_KMS("\n"); |
4abe3520 | 1373 | |
eb1f8e4f DA |
1374 | max_width = fb_helper->fb->width; |
1375 | max_height = fb_helper->fb->height; | |
1376 | bpp_sel = fb_helper->fb->bits_per_pixel; | |
5c4426a7 | 1377 | |
eb1f8e4f DA |
1378 | count = drm_fb_helper_probe_connector_modes(fb_helper, max_width, |
1379 | max_height); | |
1380 | drm_setup_crtcs(fb_helper); | |
7394371d | 1381 | mutex_unlock(&dev->mode_config.mutex); |
4abe3520 | 1382 | |
eb1f8e4f | 1383 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
5c4426a7 | 1384 | } |
eb1f8e4f | 1385 | EXPORT_SYMBOL(drm_fb_helper_hotplug_event); |
5c4426a7 | 1386 | |
6a108a14 | 1387 | /* The Kconfig DRM_KMS_HELPER selects FRAMEBUFFER_CONSOLE (if !EXPERT) |
3ce05168 DF |
1388 | * but the module doesn't depend on any fb console symbols. At least |
1389 | * attempt to load fbcon to avoid leaving the system without a usable console. | |
1390 | */ | |
6a108a14 | 1391 | #if defined(CONFIG_FRAMEBUFFER_CONSOLE_MODULE) && !defined(CONFIG_EXPERT) |
3ce05168 DF |
1392 | static int __init drm_fb_helper_modinit(void) |
1393 | { | |
1394 | const char *name = "fbcon"; | |
1395 | struct module *fbcon; | |
1396 | ||
1397 | mutex_lock(&module_mutex); | |
1398 | fbcon = find_module(name); | |
1399 | mutex_unlock(&module_mutex); | |
1400 | ||
1401 | if (!fbcon) | |
1402 | request_module_nowait(name); | |
1403 | return 0; | |
1404 | } | |
1405 | ||
1406 | module_init(drm_fb_helper_modinit); | |
1407 | #endif |