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Commit | Line | Data |
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785b93ef DA |
1 | /* |
2 | * Copyright (c) 2006-2009 Red Hat Inc. | |
3 | * Copyright (c) 2006-2008 Intel Corporation | |
4 | * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> | |
5 | * | |
6 | * DRM framebuffer helper functions | |
7 | * | |
8 | * Permission to use, copy, modify, distribute, and sell this software and its | |
9 | * documentation for any purpose is hereby granted without fee, provided that | |
10 | * the above copyright notice appear in all copies and that both that copyright | |
11 | * notice and this permission notice appear in supporting documentation, and | |
12 | * that the name of the copyright holders not be used in advertising or | |
13 | * publicity pertaining to distribution of the software without specific, | |
14 | * written prior permission. The copyright holders make no representations | |
15 | * about the suitability of this software for any purpose. It is provided "as | |
16 | * is" without express or implied warranty. | |
17 | * | |
18 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
19 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
20 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
21 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
22 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
23 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
24 | * OF THIS SOFTWARE. | |
25 | * | |
26 | * Authors: | |
27 | * Dave Airlie <airlied@linux.ie> | |
28 | * Jesse Barnes <jesse.barnes@intel.com> | |
29 | */ | |
d56b1b9d SK |
30 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
31 | ||
3b40a443 | 32 | #include <linux/kernel.h> |
785b93ef | 33 | #include <linux/sysrq.h> |
5a0e3ad6 | 34 | #include <linux/slab.h> |
785b93ef | 35 | #include <linux/fb.h> |
e0cd3608 | 36 | #include <linux/module.h> |
760285e7 DH |
37 | #include <drm/drmP.h> |
38 | #include <drm/drm_crtc.h> | |
39 | #include <drm/drm_fb_helper.h> | |
40 | #include <drm/drm_crtc_helper.h> | |
785b93ef | 41 | |
6fcefd56 DA |
42 | MODULE_AUTHOR("David Airlie, Jesse Barnes"); |
43 | MODULE_DESCRIPTION("DRM KMS helper"); | |
44 | MODULE_LICENSE("GPL and additional rights"); | |
45 | ||
785b93ef DA |
46 | static LIST_HEAD(kernel_fb_helper_list); |
47 | ||
0b4c0f3f DA |
48 | /* simple single crtc case helper function */ |
49 | int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper) | |
d50ba256 | 50 | { |
0b4c0f3f DA |
51 | struct drm_device *dev = fb_helper->dev; |
52 | struct drm_connector *connector; | |
53 | int i; | |
d50ba256 | 54 | |
0b4c0f3f DA |
55 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
56 | struct drm_fb_helper_connector *fb_helper_connector; | |
57 | ||
58 | fb_helper_connector = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL); | |
59 | if (!fb_helper_connector) | |
60 | goto fail; | |
d50ba256 | 61 | |
0b4c0f3f DA |
62 | fb_helper_connector->connector = connector; |
63 | fb_helper->connector_info[fb_helper->connector_count++] = fb_helper_connector; | |
64 | } | |
d50ba256 | 65 | return 0; |
0b4c0f3f DA |
66 | fail: |
67 | for (i = 0; i < fb_helper->connector_count; i++) { | |
68 | kfree(fb_helper->connector_info[i]); | |
69 | fb_helper->connector_info[i] = NULL; | |
70 | } | |
71 | fb_helper->connector_count = 0; | |
72 | return -ENOMEM; | |
d50ba256 | 73 | } |
0b4c0f3f | 74 | EXPORT_SYMBOL(drm_fb_helper_single_add_all_connectors); |
d50ba256 | 75 | |
0b4c0f3f | 76 | static int drm_fb_helper_parse_command_line(struct drm_fb_helper *fb_helper) |
d50ba256 | 77 | { |
0b4c0f3f DA |
78 | struct drm_fb_helper_connector *fb_helper_conn; |
79 | int i; | |
d50ba256 | 80 | |
0b4c0f3f | 81 | for (i = 0; i < fb_helper->connector_count; i++) { |
1794d257 CW |
82 | struct drm_cmdline_mode *mode; |
83 | struct drm_connector *connector; | |
d50ba256 DA |
84 | char *option = NULL; |
85 | ||
0b4c0f3f | 86 | fb_helper_conn = fb_helper->connector_info[i]; |
1794d257 CW |
87 | connector = fb_helper_conn->connector; |
88 | mode = &fb_helper_conn->cmdline_mode; | |
0b4c0f3f | 89 | |
d50ba256 | 90 | /* do something on return - turn off connector maybe */ |
1794d257 | 91 | if (fb_get_options(drm_get_connector_name(connector), &option)) |
d50ba256 DA |
92 | continue; |
93 | ||
1794d257 CW |
94 | if (drm_mode_parse_command_line_for_connector(option, |
95 | connector, | |
96 | mode)) { | |
97 | if (mode->force) { | |
98 | const char *s; | |
99 | switch (mode->force) { | |
6c91083f SK |
100 | case DRM_FORCE_OFF: |
101 | s = "OFF"; | |
102 | break; | |
103 | case DRM_FORCE_ON_DIGITAL: | |
104 | s = "ON - dig"; | |
105 | break; | |
1794d257 | 106 | default: |
6c91083f SK |
107 | case DRM_FORCE_ON: |
108 | s = "ON"; | |
109 | break; | |
1794d257 CW |
110 | } |
111 | ||
112 | DRM_INFO("forcing %s connector %s\n", | |
113 | drm_get_connector_name(connector), s); | |
114 | connector->force = mode->force; | |
115 | } | |
116 | ||
117 | DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n", | |
118 | drm_get_connector_name(connector), | |
119 | mode->xres, mode->yres, | |
120 | mode->refresh_specified ? mode->refresh : 60, | |
121 | mode->rb ? " reduced blanking" : "", | |
122 | mode->margins ? " with margins" : "", | |
123 | mode->interlace ? " interlaced" : ""); | |
124 | } | |
125 | ||
d50ba256 DA |
126 | } |
127 | return 0; | |
128 | } | |
129 | ||
99231028 JW |
130 | static void drm_fb_helper_save_lut_atomic(struct drm_crtc *crtc, struct drm_fb_helper *helper) |
131 | { | |
132 | uint16_t *r_base, *g_base, *b_base; | |
133 | int i; | |
134 | ||
135 | r_base = crtc->gamma_store; | |
136 | g_base = r_base + crtc->gamma_size; | |
137 | b_base = g_base + crtc->gamma_size; | |
138 | ||
139 | for (i = 0; i < crtc->gamma_size; i++) | |
140 | helper->funcs->gamma_get(crtc, &r_base[i], &g_base[i], &b_base[i], i); | |
141 | } | |
142 | ||
143 | static void drm_fb_helper_restore_lut_atomic(struct drm_crtc *crtc) | |
144 | { | |
145 | uint16_t *r_base, *g_base, *b_base; | |
146 | ||
ebe0f244 LP |
147 | if (crtc->funcs->gamma_set == NULL) |
148 | return; | |
149 | ||
99231028 JW |
150 | r_base = crtc->gamma_store; |
151 | g_base = r_base + crtc->gamma_size; | |
152 | b_base = g_base + crtc->gamma_size; | |
153 | ||
154 | crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size); | |
155 | } | |
156 | ||
1a7aba7f JB |
157 | int drm_fb_helper_debug_enter(struct fb_info *info) |
158 | { | |
159 | struct drm_fb_helper *helper = info->par; | |
160 | struct drm_crtc_helper_funcs *funcs; | |
161 | int i; | |
162 | ||
163 | if (list_empty(&kernel_fb_helper_list)) | |
164 | return false; | |
165 | ||
166 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { | |
167 | for (i = 0; i < helper->crtc_count; i++) { | |
168 | struct drm_mode_set *mode_set = | |
169 | &helper->crtc_info[i].mode_set; | |
170 | ||
171 | if (!mode_set->crtc->enabled) | |
172 | continue; | |
173 | ||
174 | funcs = mode_set->crtc->helper_private; | |
99231028 | 175 | drm_fb_helper_save_lut_atomic(mode_set->crtc, helper); |
1a7aba7f JB |
176 | funcs->mode_set_base_atomic(mode_set->crtc, |
177 | mode_set->fb, | |
178 | mode_set->x, | |
413d45d3 | 179 | mode_set->y, |
21c74a8e | 180 | ENTER_ATOMIC_MODE_SET); |
1a7aba7f JB |
181 | } |
182 | } | |
183 | ||
184 | return 0; | |
185 | } | |
186 | EXPORT_SYMBOL(drm_fb_helper_debug_enter); | |
187 | ||
188 | /* Find the real fb for a given fb helper CRTC */ | |
189 | static struct drm_framebuffer *drm_mode_config_fb(struct drm_crtc *crtc) | |
190 | { | |
191 | struct drm_device *dev = crtc->dev; | |
192 | struct drm_crtc *c; | |
193 | ||
194 | list_for_each_entry(c, &dev->mode_config.crtc_list, head) { | |
195 | if (crtc->base.id == c->base.id) | |
196 | return c->fb; | |
197 | } | |
198 | ||
199 | return NULL; | |
200 | } | |
201 | ||
202 | int drm_fb_helper_debug_leave(struct fb_info *info) | |
203 | { | |
204 | struct drm_fb_helper *helper = info->par; | |
205 | struct drm_crtc *crtc; | |
206 | struct drm_crtc_helper_funcs *funcs; | |
207 | struct drm_framebuffer *fb; | |
208 | int i; | |
209 | ||
210 | for (i = 0; i < helper->crtc_count; i++) { | |
211 | struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set; | |
212 | crtc = mode_set->crtc; | |
213 | funcs = crtc->helper_private; | |
214 | fb = drm_mode_config_fb(crtc); | |
215 | ||
216 | if (!crtc->enabled) | |
217 | continue; | |
218 | ||
219 | if (!fb) { | |
220 | DRM_ERROR("no fb to restore??\n"); | |
221 | continue; | |
222 | } | |
223 | ||
99231028 | 224 | drm_fb_helper_restore_lut_atomic(mode_set->crtc); |
1a7aba7f | 225 | funcs->mode_set_base_atomic(mode_set->crtc, fb, crtc->x, |
21c74a8e | 226 | crtc->y, LEAVE_ATOMIC_MODE_SET); |
1a7aba7f JB |
227 | } |
228 | ||
229 | return 0; | |
230 | } | |
231 | EXPORT_SYMBOL(drm_fb_helper_debug_leave); | |
232 | ||
e8e7a2b8 DA |
233 | bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper) |
234 | { | |
235 | bool error = false; | |
236 | int i, ret; | |
237 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
238 | struct drm_mode_set *mode_set = &fb_helper->crtc_info[i].mode_set; | |
d3904754 | 239 | ret = mode_set->crtc->funcs->set_config(mode_set); |
e8e7a2b8 DA |
240 | if (ret) |
241 | error = true; | |
242 | } | |
243 | return error; | |
244 | } | |
245 | EXPORT_SYMBOL(drm_fb_helper_restore_fbdev_mode); | |
246 | ||
78b9c353 | 247 | static bool drm_fb_helper_force_kernel_mode(void) |
785b93ef | 248 | { |
785b93ef DA |
249 | bool ret, error = false; |
250 | struct drm_fb_helper *helper; | |
251 | ||
252 | if (list_empty(&kernel_fb_helper_list)) | |
253 | return false; | |
254 | ||
255 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { | |
e8e7a2b8 DA |
256 | if (helper->dev->switch_power_state == DRM_SWITCH_POWER_OFF) |
257 | continue; | |
258 | ||
259 | ret = drm_fb_helper_restore_fbdev_mode(helper); | |
260 | if (ret) | |
261 | error = true; | |
785b93ef DA |
262 | } |
263 | return error; | |
264 | } | |
265 | ||
266 | int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed, | |
267 | void *panic_str) | |
268 | { | |
d68752cf HD |
269 | /* |
270 | * It's a waste of time and effort to switch back to text console | |
271 | * if the kernel should reboot before panic messages can be seen. | |
272 | */ | |
273 | if (panic_timeout < 0) | |
274 | return 0; | |
275 | ||
d56b1b9d | 276 | pr_err("panic occurred, switching back to text console\n"); |
785b93ef | 277 | return drm_fb_helper_force_kernel_mode(); |
785b93ef DA |
278 | } |
279 | EXPORT_SYMBOL(drm_fb_helper_panic); | |
280 | ||
281 | static struct notifier_block paniced = { | |
282 | .notifier_call = drm_fb_helper_panic, | |
283 | }; | |
284 | ||
285 | /** | |
286 | * drm_fb_helper_restore - restore the framebuffer console (kernel) config | |
287 | * | |
288 | * Restore's the kernel's fbcon mode, used for lastclose & panic paths. | |
289 | */ | |
290 | void drm_fb_helper_restore(void) | |
291 | { | |
292 | bool ret; | |
293 | ret = drm_fb_helper_force_kernel_mode(); | |
294 | if (ret == true) | |
295 | DRM_ERROR("Failed to restore crtc configuration\n"); | |
296 | } | |
297 | EXPORT_SYMBOL(drm_fb_helper_restore); | |
298 | ||
bea1d35b | 299 | #ifdef CONFIG_MAGIC_SYSRQ |
785b93ef DA |
300 | static void drm_fb_helper_restore_work_fn(struct work_struct *ignored) |
301 | { | |
302 | drm_fb_helper_restore(); | |
303 | } | |
304 | static DECLARE_WORK(drm_fb_helper_restore_work, drm_fb_helper_restore_work_fn); | |
305 | ||
1495cc9d | 306 | static void drm_fb_helper_sysrq(int dummy1) |
785b93ef DA |
307 | { |
308 | schedule_work(&drm_fb_helper_restore_work); | |
309 | } | |
310 | ||
311 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { | |
312 | .handler = drm_fb_helper_sysrq, | |
313 | .help_msg = "force-fb(V)", | |
314 | .action_msg = "Restore framebuffer console", | |
315 | }; | |
b8c40d62 RD |
316 | #else |
317 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { }; | |
bea1d35b | 318 | #endif |
785b93ef | 319 | |
3a8148c5 | 320 | static void drm_fb_helper_dpms(struct fb_info *info, int dpms_mode) |
785b93ef DA |
321 | { |
322 | struct drm_fb_helper *fb_helper = info->par; | |
323 | struct drm_device *dev = fb_helper->dev; | |
324 | struct drm_crtc *crtc; | |
023eb571 | 325 | struct drm_connector *connector; |
023eb571 | 326 | int i, j; |
785b93ef DA |
327 | |
328 | /* | |
3a8148c5 | 329 | * For each CRTC in this fb, turn the connectors on/off. |
785b93ef | 330 | */ |
8be48d92 | 331 | mutex_lock(&dev->mode_config.mutex); |
e87b2c42 | 332 | for (i = 0; i < fb_helper->crtc_count; i++) { |
8be48d92 | 333 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
785b93ef | 334 | |
8be48d92 DA |
335 | if (!crtc->enabled) |
336 | continue; | |
337 | ||
3a8148c5 | 338 | /* Walk the connectors & encoders on this fb turning them on/off */ |
023eb571 JB |
339 | for (j = 0; j < fb_helper->connector_count; j++) { |
340 | connector = fb_helper->connector_info[j]->connector; | |
e04190e0 | 341 | connector->funcs->dpms(connector, dpms_mode); |
023eb571 | 342 | drm_connector_property_set_value(connector, |
3a8148c5 | 343 | dev->mode_config.dpms_property, dpms_mode); |
785b93ef | 344 | } |
785b93ef | 345 | } |
8be48d92 | 346 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
347 | } |
348 | ||
349 | int drm_fb_helper_blank(int blank, struct fb_info *info) | |
350 | { | |
351 | switch (blank) { | |
731b5a15 | 352 | /* Display: On; HSync: On, VSync: On */ |
785b93ef | 353 | case FB_BLANK_UNBLANK: |
3a8148c5 | 354 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_ON); |
785b93ef | 355 | break; |
731b5a15 | 356 | /* Display: Off; HSync: On, VSync: On */ |
785b93ef | 357 | case FB_BLANK_NORMAL: |
3a8148c5 | 358 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_STANDBY); |
785b93ef | 359 | break; |
731b5a15 | 360 | /* Display: Off; HSync: Off, VSync: On */ |
785b93ef | 361 | case FB_BLANK_HSYNC_SUSPEND: |
3a8148c5 | 362 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_STANDBY); |
785b93ef | 363 | break; |
731b5a15 | 364 | /* Display: Off; HSync: On, VSync: Off */ |
785b93ef | 365 | case FB_BLANK_VSYNC_SUSPEND: |
3a8148c5 | 366 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_SUSPEND); |
785b93ef | 367 | break; |
731b5a15 | 368 | /* Display: Off; HSync: Off, VSync: Off */ |
785b93ef | 369 | case FB_BLANK_POWERDOWN: |
3a8148c5 | 370 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_OFF); |
785b93ef DA |
371 | break; |
372 | } | |
373 | return 0; | |
374 | } | |
375 | EXPORT_SYMBOL(drm_fb_helper_blank); | |
376 | ||
377 | static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) | |
378 | { | |
379 | int i; | |
380 | ||
0b4c0f3f DA |
381 | for (i = 0; i < helper->connector_count; i++) |
382 | kfree(helper->connector_info[i]); | |
383 | kfree(helper->connector_info); | |
a1b7736d | 384 | for (i = 0; i < helper->crtc_count; i++) { |
785b93ef | 385 | kfree(helper->crtc_info[i].mode_set.connectors); |
a1b7736d SH |
386 | if (helper->crtc_info[i].mode_set.mode) |
387 | drm_mode_destroy(helper->dev, helper->crtc_info[i].mode_set.mode); | |
388 | } | |
785b93ef DA |
389 | kfree(helper->crtc_info); |
390 | } | |
391 | ||
4abe3520 DA |
392 | int drm_fb_helper_init(struct drm_device *dev, |
393 | struct drm_fb_helper *fb_helper, | |
eb1f8e4f | 394 | int crtc_count, int max_conn_count) |
785b93ef | 395 | { |
785b93ef | 396 | struct drm_crtc *crtc; |
785b93ef DA |
397 | int i; |
398 | ||
4abe3520 | 399 | fb_helper->dev = dev; |
4abe3520 DA |
400 | |
401 | INIT_LIST_HEAD(&fb_helper->kernel_fb_list); | |
402 | ||
403 | fb_helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL); | |
404 | if (!fb_helper->crtc_info) | |
785b93ef DA |
405 | return -ENOMEM; |
406 | ||
4abe3520 DA |
407 | fb_helper->crtc_count = crtc_count; |
408 | fb_helper->connector_info = kcalloc(dev->mode_config.num_connector, sizeof(struct drm_fb_helper_connector *), GFP_KERNEL); | |
409 | if (!fb_helper->connector_info) { | |
410 | kfree(fb_helper->crtc_info); | |
0b4c0f3f DA |
411 | return -ENOMEM; |
412 | } | |
4abe3520 | 413 | fb_helper->connector_count = 0; |
785b93ef DA |
414 | |
415 | for (i = 0; i < crtc_count; i++) { | |
4abe3520 | 416 | fb_helper->crtc_info[i].mode_set.connectors = |
785b93ef DA |
417 | kcalloc(max_conn_count, |
418 | sizeof(struct drm_connector *), | |
419 | GFP_KERNEL); | |
420 | ||
4a1b0714 | 421 | if (!fb_helper->crtc_info[i].mode_set.connectors) |
785b93ef | 422 | goto out_free; |
4abe3520 | 423 | fb_helper->crtc_info[i].mode_set.num_connectors = 0; |
785b93ef DA |
424 | } |
425 | ||
426 | i = 0; | |
427 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
4abe3520 | 428 | fb_helper->crtc_info[i].mode_set.crtc = crtc; |
785b93ef DA |
429 | i++; |
430 | } | |
e9ad3181 | 431 | |
785b93ef DA |
432 | return 0; |
433 | out_free: | |
4abe3520 | 434 | drm_fb_helper_crtc_free(fb_helper); |
785b93ef DA |
435 | return -ENOMEM; |
436 | } | |
4abe3520 DA |
437 | EXPORT_SYMBOL(drm_fb_helper_init); |
438 | ||
439 | void drm_fb_helper_fini(struct drm_fb_helper *fb_helper) | |
440 | { | |
441 | if (!list_empty(&fb_helper->kernel_fb_list)) { | |
442 | list_del(&fb_helper->kernel_fb_list); | |
443 | if (list_empty(&kernel_fb_helper_list)) { | |
d56b1b9d | 444 | pr_info("drm: unregistered panic notifier\n"); |
4abe3520 DA |
445 | atomic_notifier_chain_unregister(&panic_notifier_list, |
446 | &paniced); | |
447 | unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
448 | } | |
449 | } | |
450 | ||
451 | drm_fb_helper_crtc_free(fb_helper); | |
452 | ||
4abe3520 DA |
453 | } |
454 | EXPORT_SYMBOL(drm_fb_helper_fini); | |
785b93ef | 455 | |
c850cb78 | 456 | static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, |
b8c00ac5 DA |
457 | u16 blue, u16 regno, struct fb_info *info) |
458 | { | |
459 | struct drm_fb_helper *fb_helper = info->par; | |
460 | struct drm_framebuffer *fb = fb_helper->fb; | |
461 | int pindex; | |
462 | ||
c850cb78 DA |
463 | if (info->fix.visual == FB_VISUAL_TRUECOLOR) { |
464 | u32 *palette; | |
465 | u32 value; | |
466 | /* place color in psuedopalette */ | |
467 | if (regno > 16) | |
468 | return -EINVAL; | |
469 | palette = (u32 *)info->pseudo_palette; | |
470 | red >>= (16 - info->var.red.length); | |
471 | green >>= (16 - info->var.green.length); | |
472 | blue >>= (16 - info->var.blue.length); | |
473 | value = (red << info->var.red.offset) | | |
474 | (green << info->var.green.offset) | | |
475 | (blue << info->var.blue.offset); | |
9da12b6a RC |
476 | if (info->var.transp.length > 0) { |
477 | u32 mask = (1 << info->var.transp.length) - 1; | |
478 | mask <<= info->var.transp.offset; | |
479 | value |= mask; | |
480 | } | |
c850cb78 DA |
481 | palette[regno] = value; |
482 | return 0; | |
483 | } | |
484 | ||
b8c00ac5 DA |
485 | pindex = regno; |
486 | ||
487 | if (fb->bits_per_pixel == 16) { | |
488 | pindex = regno << 3; | |
489 | ||
490 | if (fb->depth == 16 && regno > 63) | |
c850cb78 | 491 | return -EINVAL; |
b8c00ac5 | 492 | if (fb->depth == 15 && regno > 31) |
c850cb78 | 493 | return -EINVAL; |
b8c00ac5 DA |
494 | |
495 | if (fb->depth == 16) { | |
496 | u16 r, g, b; | |
497 | int i; | |
498 | if (regno < 32) { | |
499 | for (i = 0; i < 8; i++) | |
500 | fb_helper->funcs->gamma_set(crtc, red, | |
501 | green, blue, pindex + i); | |
502 | } | |
503 | ||
504 | fb_helper->funcs->gamma_get(crtc, &r, | |
505 | &g, &b, | |
506 | pindex >> 1); | |
507 | ||
508 | for (i = 0; i < 4; i++) | |
509 | fb_helper->funcs->gamma_set(crtc, r, | |
510 | green, b, | |
511 | (pindex >> 1) + i); | |
512 | } | |
513 | } | |
514 | ||
515 | if (fb->depth != 16) | |
516 | fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex); | |
c850cb78 | 517 | return 0; |
b8c00ac5 DA |
518 | } |
519 | ||
068143d3 DA |
520 | int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) |
521 | { | |
522 | struct drm_fb_helper *fb_helper = info->par; | |
8be48d92 | 523 | struct drm_crtc_helper_funcs *crtc_funcs; |
068143d3 DA |
524 | u16 *red, *green, *blue, *transp; |
525 | struct drm_crtc *crtc; | |
062ac622 | 526 | int i, j, rc = 0; |
068143d3 DA |
527 | int start; |
528 | ||
8be48d92 DA |
529 | for (i = 0; i < fb_helper->crtc_count; i++) { |
530 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
531 | crtc_funcs = crtc->helper_private; | |
068143d3 DA |
532 | |
533 | red = cmap->red; | |
534 | green = cmap->green; | |
535 | blue = cmap->blue; | |
536 | transp = cmap->transp; | |
537 | start = cmap->start; | |
538 | ||
062ac622 | 539 | for (j = 0; j < cmap->len; j++) { |
068143d3 DA |
540 | u16 hred, hgreen, hblue, htransp = 0xffff; |
541 | ||
542 | hred = *red++; | |
543 | hgreen = *green++; | |
544 | hblue = *blue++; | |
545 | ||
546 | if (transp) | |
547 | htransp = *transp++; | |
548 | ||
c850cb78 DA |
549 | rc = setcolreg(crtc, hred, hgreen, hblue, start++, info); |
550 | if (rc) | |
551 | return rc; | |
068143d3 DA |
552 | } |
553 | crtc_funcs->load_lut(crtc); | |
554 | } | |
555 | return rc; | |
556 | } | |
557 | EXPORT_SYMBOL(drm_fb_helper_setcmap); | |
558 | ||
785b93ef DA |
559 | int drm_fb_helper_check_var(struct fb_var_screeninfo *var, |
560 | struct fb_info *info) | |
561 | { | |
562 | struct drm_fb_helper *fb_helper = info->par; | |
563 | struct drm_framebuffer *fb = fb_helper->fb; | |
564 | int depth; | |
565 | ||
f90ebd9e | 566 | if (var->pixclock != 0 || in_dbg_master()) |
785b93ef DA |
567 | return -EINVAL; |
568 | ||
569 | /* Need to resize the fb object !!! */ | |
62fb376e CW |
570 | if (var->bits_per_pixel > fb->bits_per_pixel || |
571 | var->xres > fb->width || var->yres > fb->height || | |
572 | var->xres_virtual > fb->width || var->yres_virtual > fb->height) { | |
509c7d83 | 573 | DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb " |
62fb376e CW |
574 | "request %dx%d-%d (virtual %dx%d) > %dx%d-%d\n", |
575 | var->xres, var->yres, var->bits_per_pixel, | |
576 | var->xres_virtual, var->yres_virtual, | |
509c7d83 | 577 | fb->width, fb->height, fb->bits_per_pixel); |
785b93ef DA |
578 | return -EINVAL; |
579 | } | |
580 | ||
581 | switch (var->bits_per_pixel) { | |
582 | case 16: | |
583 | depth = (var->green.length == 6) ? 16 : 15; | |
584 | break; | |
585 | case 32: | |
586 | depth = (var->transp.length > 0) ? 32 : 24; | |
587 | break; | |
588 | default: | |
589 | depth = var->bits_per_pixel; | |
590 | break; | |
591 | } | |
592 | ||
593 | switch (depth) { | |
594 | case 8: | |
595 | var->red.offset = 0; | |
596 | var->green.offset = 0; | |
597 | var->blue.offset = 0; | |
598 | var->red.length = 8; | |
599 | var->green.length = 8; | |
600 | var->blue.length = 8; | |
601 | var->transp.length = 0; | |
602 | var->transp.offset = 0; | |
603 | break; | |
604 | case 15: | |
605 | var->red.offset = 10; | |
606 | var->green.offset = 5; | |
607 | var->blue.offset = 0; | |
608 | var->red.length = 5; | |
609 | var->green.length = 5; | |
610 | var->blue.length = 5; | |
611 | var->transp.length = 1; | |
612 | var->transp.offset = 15; | |
613 | break; | |
614 | case 16: | |
615 | var->red.offset = 11; | |
616 | var->green.offset = 5; | |
617 | var->blue.offset = 0; | |
618 | var->red.length = 5; | |
619 | var->green.length = 6; | |
620 | var->blue.length = 5; | |
621 | var->transp.length = 0; | |
622 | var->transp.offset = 0; | |
623 | break; | |
624 | case 24: | |
625 | var->red.offset = 16; | |
626 | var->green.offset = 8; | |
627 | var->blue.offset = 0; | |
628 | var->red.length = 8; | |
629 | var->green.length = 8; | |
630 | var->blue.length = 8; | |
631 | var->transp.length = 0; | |
632 | var->transp.offset = 0; | |
633 | break; | |
634 | case 32: | |
635 | var->red.offset = 16; | |
636 | var->green.offset = 8; | |
637 | var->blue.offset = 0; | |
638 | var->red.length = 8; | |
639 | var->green.length = 8; | |
640 | var->blue.length = 8; | |
641 | var->transp.length = 8; | |
642 | var->transp.offset = 24; | |
643 | break; | |
644 | default: | |
645 | return -EINVAL; | |
646 | } | |
647 | return 0; | |
648 | } | |
649 | EXPORT_SYMBOL(drm_fb_helper_check_var); | |
650 | ||
651 | /* this will let fbcon do the mode init */ | |
652 | int drm_fb_helper_set_par(struct fb_info *info) | |
653 | { | |
654 | struct drm_fb_helper *fb_helper = info->par; | |
655 | struct drm_device *dev = fb_helper->dev; | |
656 | struct fb_var_screeninfo *var = &info->var; | |
657 | struct drm_crtc *crtc; | |
658 | int ret; | |
659 | int i; | |
660 | ||
5349ef31 | 661 | if (var->pixclock != 0) { |
172e91f5 | 662 | DRM_ERROR("PIXEL CLOCK SET\n"); |
785b93ef DA |
663 | return -EINVAL; |
664 | } | |
665 | ||
8be48d92 DA |
666 | mutex_lock(&dev->mode_config.mutex); |
667 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
668 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
0b4c0f3f DA |
669 | ret = crtc->funcs->set_config(&fb_helper->crtc_info[i].mode_set); |
670 | if (ret) { | |
785b93ef | 671 | mutex_unlock(&dev->mode_config.mutex); |
0b4c0f3f | 672 | return ret; |
785b93ef DA |
673 | } |
674 | } | |
8be48d92 | 675 | mutex_unlock(&dev->mode_config.mutex); |
4abe3520 DA |
676 | |
677 | if (fb_helper->delayed_hotplug) { | |
678 | fb_helper->delayed_hotplug = false; | |
eb1f8e4f | 679 | drm_fb_helper_hotplug_event(fb_helper); |
4abe3520 | 680 | } |
785b93ef DA |
681 | return 0; |
682 | } | |
683 | EXPORT_SYMBOL(drm_fb_helper_set_par); | |
684 | ||
685 | int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, | |
686 | struct fb_info *info) | |
687 | { | |
688 | struct drm_fb_helper *fb_helper = info->par; | |
689 | struct drm_device *dev = fb_helper->dev; | |
690 | struct drm_mode_set *modeset; | |
691 | struct drm_crtc *crtc; | |
692 | int ret = 0; | |
693 | int i; | |
694 | ||
8be48d92 DA |
695 | mutex_lock(&dev->mode_config.mutex); |
696 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
697 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
785b93ef DA |
698 | |
699 | modeset = &fb_helper->crtc_info[i].mode_set; | |
700 | ||
701 | modeset->x = var->xoffset; | |
702 | modeset->y = var->yoffset; | |
703 | ||
704 | if (modeset->num_connectors) { | |
785b93ef | 705 | ret = crtc->funcs->set_config(modeset); |
785b93ef DA |
706 | if (!ret) { |
707 | info->var.xoffset = var->xoffset; | |
708 | info->var.yoffset = var->yoffset; | |
709 | } | |
710 | } | |
711 | } | |
8be48d92 | 712 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
713 | return ret; |
714 | } | |
715 | EXPORT_SYMBOL(drm_fb_helper_pan_display); | |
716 | ||
8be48d92 DA |
717 | int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, |
718 | int preferred_bpp) | |
785b93ef | 719 | { |
785b93ef DA |
720 | int new_fb = 0; |
721 | int crtc_count = 0; | |
4abe3520 | 722 | int i; |
785b93ef | 723 | struct fb_info *info; |
38651674 | 724 | struct drm_fb_helper_surface_size sizes; |
8be48d92 | 725 | int gamma_size = 0; |
38651674 DA |
726 | |
727 | memset(&sizes, 0, sizeof(struct drm_fb_helper_surface_size)); | |
728 | sizes.surface_depth = 24; | |
729 | sizes.surface_bpp = 32; | |
730 | sizes.fb_width = (unsigned)-1; | |
731 | sizes.fb_height = (unsigned)-1; | |
785b93ef | 732 | |
b8c00ac5 DA |
733 | /* if driver picks 8 or 16 by default use that |
734 | for both depth/bpp */ | |
96081cdf | 735 | if (preferred_bpp != sizes.surface_bpp) |
38651674 | 736 | sizes.surface_depth = sizes.surface_bpp = preferred_bpp; |
96081cdf | 737 | |
785b93ef | 738 | /* first up get a count of crtcs now in use and new min/maxes width/heights */ |
0b4c0f3f DA |
739 | for (i = 0; i < fb_helper->connector_count; i++) { |
740 | struct drm_fb_helper_connector *fb_helper_conn = fb_helper->connector_info[i]; | |
1794d257 | 741 | struct drm_cmdline_mode *cmdline_mode; |
8ef8678c | 742 | |
0b4c0f3f | 743 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
d50ba256 DA |
744 | |
745 | if (cmdline_mode->bpp_specified) { | |
746 | switch (cmdline_mode->bpp) { | |
747 | case 8: | |
38651674 | 748 | sizes.surface_depth = sizes.surface_bpp = 8; |
d50ba256 DA |
749 | break; |
750 | case 15: | |
38651674 DA |
751 | sizes.surface_depth = 15; |
752 | sizes.surface_bpp = 16; | |
d50ba256 DA |
753 | break; |
754 | case 16: | |
38651674 | 755 | sizes.surface_depth = sizes.surface_bpp = 16; |
d50ba256 DA |
756 | break; |
757 | case 24: | |
38651674 | 758 | sizes.surface_depth = sizes.surface_bpp = 24; |
d50ba256 DA |
759 | break; |
760 | case 32: | |
38651674 DA |
761 | sizes.surface_depth = 24; |
762 | sizes.surface_bpp = 32; | |
d50ba256 DA |
763 | break; |
764 | } | |
765 | break; | |
766 | } | |
767 | } | |
768 | ||
8be48d92 DA |
769 | crtc_count = 0; |
770 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
771 | struct drm_display_mode *desired_mode; | |
772 | desired_mode = fb_helper->crtc_info[i].desired_mode; | |
773 | ||
774 | if (desired_mode) { | |
775 | if (gamma_size == 0) | |
776 | gamma_size = fb_helper->crtc_info[i].mode_set.crtc->gamma_size; | |
777 | if (desired_mode->hdisplay < sizes.fb_width) | |
778 | sizes.fb_width = desired_mode->hdisplay; | |
779 | if (desired_mode->vdisplay < sizes.fb_height) | |
780 | sizes.fb_height = desired_mode->vdisplay; | |
781 | if (desired_mode->hdisplay > sizes.surface_width) | |
782 | sizes.surface_width = desired_mode->hdisplay; | |
783 | if (desired_mode->vdisplay > sizes.surface_height) | |
784 | sizes.surface_height = desired_mode->vdisplay; | |
785b93ef DA |
785 | crtc_count++; |
786 | } | |
787 | } | |
788 | ||
38651674 | 789 | if (crtc_count == 0 || sizes.fb_width == -1 || sizes.fb_height == -1) { |
785b93ef DA |
790 | /* hmm everyone went away - assume VGA cable just fell out |
791 | and will come back later. */ | |
eb1f8e4f | 792 | DRM_INFO("Cannot find any crtc or sizes - going 1024x768\n"); |
19b4b445 DA |
793 | sizes.fb_width = sizes.surface_width = 1024; |
794 | sizes.fb_height = sizes.surface_height = 768; | |
785b93ef DA |
795 | } |
796 | ||
38651674 | 797 | /* push down into drivers */ |
4abe3520 | 798 | new_fb = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes); |
38651674 DA |
799 | if (new_fb < 0) |
800 | return new_fb; | |
785b93ef | 801 | |
38651674 | 802 | info = fb_helper->fbdev; |
785b93ef | 803 | |
8be48d92 | 804 | /* set the fb pointer */ |
96081cdf | 805 | for (i = 0; i < fb_helper->crtc_count; i++) |
8be48d92 | 806 | fb_helper->crtc_info[i].mode_set.fb = fb_helper->fb; |
785b93ef DA |
807 | |
808 | if (new_fb) { | |
5349ef31 | 809 | info->var.pixclock = 0; |
96081cdf | 810 | if (register_framebuffer(info) < 0) |
785b93ef | 811 | return -EINVAL; |
38651674 | 812 | |
d56b1b9d SK |
813 | dev_info(fb_helper->dev->dev, "fb%d: %s frame buffer device\n", |
814 | info->node, info->fix.id); | |
38651674 | 815 | |
785b93ef DA |
816 | } else { |
817 | drm_fb_helper_set_par(info); | |
818 | } | |
785b93ef DA |
819 | |
820 | /* Switch back to kernel console on panic */ | |
821 | /* multi card linked list maybe */ | |
822 | if (list_empty(&kernel_fb_helper_list)) { | |
d56b1b9d | 823 | dev_info(fb_helper->dev->dev, "registered panic notifier\n"); |
785b93ef DA |
824 | atomic_notifier_chain_register(&panic_notifier_list, |
825 | &paniced); | |
826 | register_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
827 | } | |
38651674 DA |
828 | if (new_fb) |
829 | list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list); | |
830 | ||
785b93ef DA |
831 | return 0; |
832 | } | |
833 | EXPORT_SYMBOL(drm_fb_helper_single_fb_probe); | |
834 | ||
3632ef89 DA |
835 | void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, |
836 | uint32_t depth) | |
837 | { | |
838 | info->fix.type = FB_TYPE_PACKED_PIXELS; | |
839 | info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR : | |
840 | FB_VISUAL_TRUECOLOR; | |
841 | info->fix.mmio_start = 0; | |
842 | info->fix.mmio_len = 0; | |
843 | info->fix.type_aux = 0; | |
844 | info->fix.xpanstep = 1; /* doing it in hw */ | |
845 | info->fix.ypanstep = 1; /* doing it in hw */ | |
846 | info->fix.ywrapstep = 0; | |
847 | info->fix.accel = FB_ACCEL_NONE; | |
848 | info->fix.type_aux = 0; | |
849 | ||
850 | info->fix.line_length = pitch; | |
851 | return; | |
852 | } | |
853 | EXPORT_SYMBOL(drm_fb_helper_fill_fix); | |
854 | ||
38651674 | 855 | void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, |
785b93ef DA |
856 | uint32_t fb_width, uint32_t fb_height) |
857 | { | |
38651674 DA |
858 | struct drm_framebuffer *fb = fb_helper->fb; |
859 | info->pseudo_palette = fb_helper->pseudo_palette; | |
785b93ef DA |
860 | info->var.xres_virtual = fb->width; |
861 | info->var.yres_virtual = fb->height; | |
862 | info->var.bits_per_pixel = fb->bits_per_pixel; | |
57084d05 | 863 | info->var.accel_flags = FB_ACCELF_TEXT; |
785b93ef DA |
864 | info->var.xoffset = 0; |
865 | info->var.yoffset = 0; | |
866 | info->var.activate = FB_ACTIVATE_NOW; | |
867 | info->var.height = -1; | |
868 | info->var.width = -1; | |
869 | ||
870 | switch (fb->depth) { | |
871 | case 8: | |
872 | info->var.red.offset = 0; | |
873 | info->var.green.offset = 0; | |
874 | info->var.blue.offset = 0; | |
875 | info->var.red.length = 8; /* 8bit DAC */ | |
876 | info->var.green.length = 8; | |
877 | info->var.blue.length = 8; | |
878 | info->var.transp.offset = 0; | |
879 | info->var.transp.length = 0; | |
880 | break; | |
881 | case 15: | |
882 | info->var.red.offset = 10; | |
883 | info->var.green.offset = 5; | |
884 | info->var.blue.offset = 0; | |
885 | info->var.red.length = 5; | |
886 | info->var.green.length = 5; | |
887 | info->var.blue.length = 5; | |
888 | info->var.transp.offset = 15; | |
889 | info->var.transp.length = 1; | |
890 | break; | |
891 | case 16: | |
892 | info->var.red.offset = 11; | |
893 | info->var.green.offset = 5; | |
894 | info->var.blue.offset = 0; | |
895 | info->var.red.length = 5; | |
896 | info->var.green.length = 6; | |
897 | info->var.blue.length = 5; | |
898 | info->var.transp.offset = 0; | |
899 | break; | |
900 | case 24: | |
901 | info->var.red.offset = 16; | |
902 | info->var.green.offset = 8; | |
903 | info->var.blue.offset = 0; | |
904 | info->var.red.length = 8; | |
905 | info->var.green.length = 8; | |
906 | info->var.blue.length = 8; | |
907 | info->var.transp.offset = 0; | |
908 | info->var.transp.length = 0; | |
909 | break; | |
910 | case 32: | |
911 | info->var.red.offset = 16; | |
912 | info->var.green.offset = 8; | |
913 | info->var.blue.offset = 0; | |
914 | info->var.red.length = 8; | |
915 | info->var.green.length = 8; | |
916 | info->var.blue.length = 8; | |
917 | info->var.transp.offset = 24; | |
918 | info->var.transp.length = 8; | |
919 | break; | |
920 | default: | |
921 | break; | |
922 | } | |
923 | ||
924 | info->var.xres = fb_width; | |
925 | info->var.yres = fb_height; | |
926 | } | |
927 | EXPORT_SYMBOL(drm_fb_helper_fill_var); | |
38651674 | 928 | |
0b4c0f3f DA |
929 | static int drm_fb_helper_probe_connector_modes(struct drm_fb_helper *fb_helper, |
930 | uint32_t maxX, | |
931 | uint32_t maxY) | |
38651674 DA |
932 | { |
933 | struct drm_connector *connector; | |
934 | int count = 0; | |
0b4c0f3f | 935 | int i; |
38651674 | 936 | |
0b4c0f3f DA |
937 | for (i = 0; i < fb_helper->connector_count; i++) { |
938 | connector = fb_helper->connector_info[i]->connector; | |
38651674 DA |
939 | count += connector->funcs->fill_modes(connector, maxX, maxY); |
940 | } | |
941 | ||
942 | return count; | |
943 | } | |
944 | ||
0b4c0f3f | 945 | static struct drm_display_mode *drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, int width, int height) |
38651674 DA |
946 | { |
947 | struct drm_display_mode *mode; | |
948 | ||
0b4c0f3f | 949 | list_for_each_entry(mode, &fb_connector->connector->modes, head) { |
38651674 DA |
950 | if (drm_mode_width(mode) > width || |
951 | drm_mode_height(mode) > height) | |
952 | continue; | |
953 | if (mode->type & DRM_MODE_TYPE_PREFERRED) | |
954 | return mode; | |
955 | } | |
956 | return NULL; | |
957 | } | |
958 | ||
0b4c0f3f | 959 | static bool drm_has_cmdline_mode(struct drm_fb_helper_connector *fb_connector) |
38651674 | 960 | { |
1794d257 | 961 | struct drm_cmdline_mode *cmdline_mode; |
0b4c0f3f | 962 | cmdline_mode = &fb_connector->cmdline_mode; |
38651674 DA |
963 | return cmdline_mode->specified; |
964 | } | |
965 | ||
0b4c0f3f DA |
966 | static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn, |
967 | int width, int height) | |
38651674 | 968 | { |
1794d257 | 969 | struct drm_cmdline_mode *cmdline_mode; |
38651674 DA |
970 | struct drm_display_mode *mode = NULL; |
971 | ||
0b4c0f3f | 972 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
38651674 DA |
973 | if (cmdline_mode->specified == false) |
974 | return mode; | |
975 | ||
976 | /* attempt to find a matching mode in the list of modes | |
977 | * we have gotten so far, if not add a CVT mode that conforms | |
978 | */ | |
979 | if (cmdline_mode->rb || cmdline_mode->margins) | |
980 | goto create_mode; | |
981 | ||
0b4c0f3f | 982 | list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { |
38651674 DA |
983 | /* check width/height */ |
984 | if (mode->hdisplay != cmdline_mode->xres || | |
985 | mode->vdisplay != cmdline_mode->yres) | |
986 | continue; | |
987 | ||
988 | if (cmdline_mode->refresh_specified) { | |
989 | if (mode->vrefresh != cmdline_mode->refresh) | |
990 | continue; | |
991 | } | |
992 | ||
993 | if (cmdline_mode->interlace) { | |
994 | if (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) | |
995 | continue; | |
996 | } | |
997 | return mode; | |
998 | } | |
999 | ||
1000 | create_mode: | |
1794d257 CW |
1001 | mode = drm_mode_create_from_cmdline_mode(fb_helper_conn->connector->dev, |
1002 | cmdline_mode); | |
0b4c0f3f | 1003 | list_add(&mode->head, &fb_helper_conn->connector->modes); |
38651674 DA |
1004 | return mode; |
1005 | } | |
1006 | ||
1007 | static bool drm_connector_enabled(struct drm_connector *connector, bool strict) | |
1008 | { | |
1009 | bool enable; | |
1010 | ||
96081cdf | 1011 | if (strict) |
38651674 | 1012 | enable = connector->status == connector_status_connected; |
96081cdf | 1013 | else |
38651674 | 1014 | enable = connector->status != connector_status_disconnected; |
96081cdf | 1015 | |
38651674 DA |
1016 | return enable; |
1017 | } | |
1018 | ||
0b4c0f3f DA |
1019 | static void drm_enable_connectors(struct drm_fb_helper *fb_helper, |
1020 | bool *enabled) | |
38651674 DA |
1021 | { |
1022 | bool any_enabled = false; | |
1023 | struct drm_connector *connector; | |
1024 | int i = 0; | |
1025 | ||
0b4c0f3f DA |
1026 | for (i = 0; i < fb_helper->connector_count; i++) { |
1027 | connector = fb_helper->connector_info[i]->connector; | |
38651674 DA |
1028 | enabled[i] = drm_connector_enabled(connector, true); |
1029 | DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, | |
1030 | enabled[i] ? "yes" : "no"); | |
1031 | any_enabled |= enabled[i]; | |
38651674 DA |
1032 | } |
1033 | ||
1034 | if (any_enabled) | |
1035 | return; | |
1036 | ||
0b4c0f3f DA |
1037 | for (i = 0; i < fb_helper->connector_count; i++) { |
1038 | connector = fb_helper->connector_info[i]->connector; | |
38651674 | 1039 | enabled[i] = drm_connector_enabled(connector, false); |
38651674 DA |
1040 | } |
1041 | } | |
1042 | ||
1d42bbc8 DA |
1043 | static bool drm_target_cloned(struct drm_fb_helper *fb_helper, |
1044 | struct drm_display_mode **modes, | |
1045 | bool *enabled, int width, int height) | |
1046 | { | |
1047 | int count, i, j; | |
1048 | bool can_clone = false; | |
1049 | struct drm_fb_helper_connector *fb_helper_conn; | |
1050 | struct drm_display_mode *dmt_mode, *mode; | |
1051 | ||
1052 | /* only contemplate cloning in the single crtc case */ | |
1053 | if (fb_helper->crtc_count > 1) | |
1054 | return false; | |
1055 | ||
1056 | count = 0; | |
1057 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1058 | if (enabled[i]) | |
1059 | count++; | |
1060 | } | |
1061 | ||
1062 | /* only contemplate cloning if more than one connector is enabled */ | |
1063 | if (count <= 1) | |
1064 | return false; | |
1065 | ||
1066 | /* check the command line or if nothing common pick 1024x768 */ | |
1067 | can_clone = true; | |
1068 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1069 | if (!enabled[i]) | |
1070 | continue; | |
1071 | fb_helper_conn = fb_helper->connector_info[i]; | |
1072 | modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); | |
1073 | if (!modes[i]) { | |
1074 | can_clone = false; | |
1075 | break; | |
1076 | } | |
1077 | for (j = 0; j < i; j++) { | |
1078 | if (!enabled[j]) | |
1079 | continue; | |
1080 | if (!drm_mode_equal(modes[j], modes[i])) | |
1081 | can_clone = false; | |
1082 | } | |
1083 | } | |
1084 | ||
1085 | if (can_clone) { | |
1086 | DRM_DEBUG_KMS("can clone using command line\n"); | |
1087 | return true; | |
1088 | } | |
1089 | ||
1090 | /* try and find a 1024x768 mode on each connector */ | |
1091 | can_clone = true; | |
f6e252ba | 1092 | dmt_mode = drm_mode_find_dmt(fb_helper->dev, 1024, 768, 60, false); |
1d42bbc8 DA |
1093 | |
1094 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1095 | ||
1096 | if (!enabled[i]) | |
1097 | continue; | |
1098 | ||
1099 | fb_helper_conn = fb_helper->connector_info[i]; | |
1100 | list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { | |
1101 | if (drm_mode_equal(mode, dmt_mode)) | |
1102 | modes[i] = mode; | |
1103 | } | |
1104 | if (!modes[i]) | |
1105 | can_clone = false; | |
1106 | } | |
1107 | ||
1108 | if (can_clone) { | |
1109 | DRM_DEBUG_KMS("can clone using 1024x768\n"); | |
1110 | return true; | |
1111 | } | |
1112 | DRM_INFO("kms: can't enable cloning when we probably wanted to.\n"); | |
1113 | return false; | |
1114 | } | |
1115 | ||
0b4c0f3f | 1116 | static bool drm_target_preferred(struct drm_fb_helper *fb_helper, |
38651674 DA |
1117 | struct drm_display_mode **modes, |
1118 | bool *enabled, int width, int height) | |
1119 | { | |
0b4c0f3f DA |
1120 | struct drm_fb_helper_connector *fb_helper_conn; |
1121 | int i; | |
38651674 | 1122 | |
0b4c0f3f DA |
1123 | for (i = 0; i < fb_helper->connector_count; i++) { |
1124 | fb_helper_conn = fb_helper->connector_info[i]; | |
38651674 | 1125 | |
0b4c0f3f | 1126 | if (enabled[i] == false) |
38651674 | 1127 | continue; |
38651674 DA |
1128 | |
1129 | DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n", | |
0b4c0f3f | 1130 | fb_helper_conn->connector->base.id); |
38651674 DA |
1131 | |
1132 | /* got for command line mode first */ | |
0b4c0f3f | 1133 | modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); |
38651674 DA |
1134 | if (!modes[i]) { |
1135 | DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", | |
0b4c0f3f DA |
1136 | fb_helper_conn->connector->base.id); |
1137 | modes[i] = drm_has_preferred_mode(fb_helper_conn, width, height); | |
38651674 DA |
1138 | } |
1139 | /* No preferred modes, pick one off the list */ | |
0b4c0f3f DA |
1140 | if (!modes[i] && !list_empty(&fb_helper_conn->connector->modes)) { |
1141 | list_for_each_entry(modes[i], &fb_helper_conn->connector->modes, head) | |
38651674 DA |
1142 | break; |
1143 | } | |
1144 | DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : | |
1145 | "none"); | |
38651674 DA |
1146 | } |
1147 | return true; | |
1148 | } | |
1149 | ||
8be48d92 DA |
1150 | static int drm_pick_crtcs(struct drm_fb_helper *fb_helper, |
1151 | struct drm_fb_helper_crtc **best_crtcs, | |
38651674 DA |
1152 | struct drm_display_mode **modes, |
1153 | int n, int width, int height) | |
1154 | { | |
1155 | int c, o; | |
8be48d92 | 1156 | struct drm_device *dev = fb_helper->dev; |
38651674 DA |
1157 | struct drm_connector *connector; |
1158 | struct drm_connector_helper_funcs *connector_funcs; | |
1159 | struct drm_encoder *encoder; | |
8be48d92 | 1160 | struct drm_fb_helper_crtc *best_crtc; |
38651674 | 1161 | int my_score, best_score, score; |
8be48d92 | 1162 | struct drm_fb_helper_crtc **crtcs, *crtc; |
0b4c0f3f | 1163 | struct drm_fb_helper_connector *fb_helper_conn; |
38651674 | 1164 | |
0b4c0f3f | 1165 | if (n == fb_helper->connector_count) |
38651674 | 1166 | return 0; |
0b4c0f3f DA |
1167 | |
1168 | fb_helper_conn = fb_helper->connector_info[n]; | |
1169 | connector = fb_helper_conn->connector; | |
38651674 DA |
1170 | |
1171 | best_crtcs[n] = NULL; | |
1172 | best_crtc = NULL; | |
8be48d92 | 1173 | best_score = drm_pick_crtcs(fb_helper, best_crtcs, modes, n+1, width, height); |
38651674 DA |
1174 | if (modes[n] == NULL) |
1175 | return best_score; | |
1176 | ||
8be48d92 DA |
1177 | crtcs = kzalloc(dev->mode_config.num_connector * |
1178 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); | |
38651674 DA |
1179 | if (!crtcs) |
1180 | return best_score; | |
1181 | ||
1182 | my_score = 1; | |
1183 | if (connector->status == connector_status_connected) | |
1184 | my_score++; | |
0b4c0f3f | 1185 | if (drm_has_cmdline_mode(fb_helper_conn)) |
38651674 | 1186 | my_score++; |
0b4c0f3f | 1187 | if (drm_has_preferred_mode(fb_helper_conn, width, height)) |
38651674 DA |
1188 | my_score++; |
1189 | ||
1190 | connector_funcs = connector->helper_private; | |
1191 | encoder = connector_funcs->best_encoder(connector); | |
1192 | if (!encoder) | |
1193 | goto out; | |
1194 | ||
38651674 DA |
1195 | /* select a crtc for this connector and then attempt to configure |
1196 | remaining connectors */ | |
8be48d92 DA |
1197 | for (c = 0; c < fb_helper->crtc_count; c++) { |
1198 | crtc = &fb_helper->crtc_info[c]; | |
38651674 | 1199 | |
96081cdf | 1200 | if ((encoder->possible_crtcs & (1 << c)) == 0) |
38651674 | 1201 | continue; |
38651674 DA |
1202 | |
1203 | for (o = 0; o < n; o++) | |
1204 | if (best_crtcs[o] == crtc) | |
1205 | break; | |
1206 | ||
1207 | if (o < n) { | |
1d42bbc8 DA |
1208 | /* ignore cloning unless only a single crtc */ |
1209 | if (fb_helper->crtc_count > 1) | |
1210 | continue; | |
1211 | ||
1212 | if (!drm_mode_equal(modes[o], modes[n])) | |
1213 | continue; | |
38651674 DA |
1214 | } |
1215 | ||
1216 | crtcs[n] = crtc; | |
8be48d92 DA |
1217 | memcpy(crtcs, best_crtcs, n * sizeof(struct drm_fb_helper_crtc *)); |
1218 | score = my_score + drm_pick_crtcs(fb_helper, crtcs, modes, n + 1, | |
38651674 DA |
1219 | width, height); |
1220 | if (score > best_score) { | |
1221 | best_crtc = crtc; | |
1222 | best_score = score; | |
1223 | memcpy(best_crtcs, crtcs, | |
1224 | dev->mode_config.num_connector * | |
8be48d92 | 1225 | sizeof(struct drm_fb_helper_crtc *)); |
38651674 | 1226 | } |
38651674 DA |
1227 | } |
1228 | out: | |
1229 | kfree(crtcs); | |
1230 | return best_score; | |
1231 | } | |
1232 | ||
8be48d92 | 1233 | static void drm_setup_crtcs(struct drm_fb_helper *fb_helper) |
38651674 | 1234 | { |
8be48d92 DA |
1235 | struct drm_device *dev = fb_helper->dev; |
1236 | struct drm_fb_helper_crtc **crtcs; | |
38651674 | 1237 | struct drm_display_mode **modes; |
8be48d92 | 1238 | struct drm_mode_set *modeset; |
38651674 DA |
1239 | bool *enabled; |
1240 | int width, height; | |
1241 | int i, ret; | |
1242 | ||
1243 | DRM_DEBUG_KMS("\n"); | |
1244 | ||
1245 | width = dev->mode_config.max_width; | |
1246 | height = dev->mode_config.max_height; | |
1247 | ||
38651674 | 1248 | crtcs = kcalloc(dev->mode_config.num_connector, |
8be48d92 | 1249 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); |
38651674 DA |
1250 | modes = kcalloc(dev->mode_config.num_connector, |
1251 | sizeof(struct drm_display_mode *), GFP_KERNEL); | |
1252 | enabled = kcalloc(dev->mode_config.num_connector, | |
1253 | sizeof(bool), GFP_KERNEL); | |
8c5eaca0 SK |
1254 | if (!crtcs || !modes || !enabled) { |
1255 | DRM_ERROR("Memory allocation failed\n"); | |
1256 | goto out; | |
1257 | } | |
1258 | ||
38651674 | 1259 | |
0b4c0f3f | 1260 | drm_enable_connectors(fb_helper, enabled); |
38651674 | 1261 | |
1d42bbc8 DA |
1262 | ret = drm_target_cloned(fb_helper, modes, enabled, width, height); |
1263 | if (!ret) { | |
1264 | ret = drm_target_preferred(fb_helper, modes, enabled, width, height); | |
1265 | if (!ret) | |
1266 | DRM_ERROR("Unable to find initial modes\n"); | |
1267 | } | |
38651674 DA |
1268 | |
1269 | DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height); | |
1270 | ||
8be48d92 DA |
1271 | drm_pick_crtcs(fb_helper, crtcs, modes, 0, width, height); |
1272 | ||
1273 | /* need to set the modesets up here for use later */ | |
1274 | /* fill out the connector<->crtc mappings into the modesets */ | |
1275 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
1276 | modeset = &fb_helper->crtc_info[i].mode_set; | |
1277 | modeset->num_connectors = 0; | |
1278 | } | |
38651674 | 1279 | |
0b4c0f3f | 1280 | for (i = 0; i < fb_helper->connector_count; i++) { |
38651674 | 1281 | struct drm_display_mode *mode = modes[i]; |
8be48d92 DA |
1282 | struct drm_fb_helper_crtc *fb_crtc = crtcs[i]; |
1283 | modeset = &fb_crtc->mode_set; | |
38651674 | 1284 | |
8be48d92 | 1285 | if (mode && fb_crtc) { |
38651674 | 1286 | DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", |
8be48d92 DA |
1287 | mode->name, fb_crtc->mode_set.crtc->base.id); |
1288 | fb_crtc->desired_mode = mode; | |
1289 | if (modeset->mode) | |
1290 | drm_mode_destroy(dev, modeset->mode); | |
1291 | modeset->mode = drm_mode_duplicate(dev, | |
1292 | fb_crtc->desired_mode); | |
0b4c0f3f | 1293 | modeset->connectors[modeset->num_connectors++] = fb_helper->connector_info[i]->connector; |
38651674 | 1294 | } |
38651674 DA |
1295 | } |
1296 | ||
8c5eaca0 | 1297 | out: |
38651674 DA |
1298 | kfree(crtcs); |
1299 | kfree(modes); | |
1300 | kfree(enabled); | |
1301 | } | |
1302 | ||
1303 | /** | |
1304 | * drm_helper_initial_config - setup a sane initial connector configuration | |
1305 | * @dev: DRM device | |
1306 | * | |
1307 | * LOCKING: | |
1308 | * Called at init time, must take mode config lock. | |
1309 | * | |
1310 | * Scan the CRTCs and connectors and try to put together an initial setup. | |
1311 | * At the moment, this is a cloned configuration across all heads with | |
1312 | * a new framebuffer object as the backing store. | |
1313 | * | |
1314 | * RETURNS: | |
1315 | * Zero if everything went ok, nonzero otherwise. | |
1316 | */ | |
4abe3520 | 1317 | bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel) |
38651674 | 1318 | { |
8be48d92 | 1319 | struct drm_device *dev = fb_helper->dev; |
38651674 DA |
1320 | int count = 0; |
1321 | ||
1322 | /* disable all the possible outputs/crtcs before entering KMS mode */ | |
8be48d92 | 1323 | drm_helper_disable_unused_functions(fb_helper->dev); |
38651674 | 1324 | |
0b4c0f3f | 1325 | drm_fb_helper_parse_command_line(fb_helper); |
38651674 | 1326 | |
0b4c0f3f DA |
1327 | count = drm_fb_helper_probe_connector_modes(fb_helper, |
1328 | dev->mode_config.max_width, | |
1329 | dev->mode_config.max_height); | |
38651674 DA |
1330 | /* |
1331 | * we shouldn't end up with no modes here. | |
1332 | */ | |
96081cdf | 1333 | if (count == 0) |
d56b1b9d | 1334 | dev_info(fb_helper->dev->dev, "No connectors reported connected with modes\n"); |
96081cdf | 1335 | |
8be48d92 | 1336 | drm_setup_crtcs(fb_helper); |
38651674 | 1337 | |
4abe3520 | 1338 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
38651674 | 1339 | } |
8be48d92 | 1340 | EXPORT_SYMBOL(drm_fb_helper_initial_config); |
38651674 | 1341 | |
7394371d CW |
1342 | /** |
1343 | * drm_fb_helper_hotplug_event - respond to a hotplug notification by | |
1344 | * probing all the outputs attached to the fb. | |
1345 | * @fb_helper: the drm_fb_helper | |
1346 | * | |
1347 | * LOCKING: | |
1348 | * Called at runtime, must take mode config lock. | |
1349 | * | |
1350 | * Scan the connectors attached to the fb_helper and try to put together a | |
1351 | * setup after *notification of a change in output configuration. | |
1352 | * | |
1353 | * RETURNS: | |
1354 | * 0 on success and a non-zero error code otherwise. | |
1355 | */ | |
1356 | int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper) | |
38651674 | 1357 | { |
7394371d | 1358 | struct drm_device *dev = fb_helper->dev; |
5c4426a7 | 1359 | int count = 0; |
4abe3520 | 1360 | u32 max_width, max_height, bpp_sel; |
343065a6 | 1361 | int bound = 0, crtcs_bound = 0; |
4abe3520 | 1362 | struct drm_crtc *crtc; |
5c4426a7 | 1363 | |
eb1f8e4f | 1364 | if (!fb_helper->fb) |
7394371d | 1365 | return 0; |
4abe3520 | 1366 | |
7394371d CW |
1367 | mutex_lock(&dev->mode_config.mutex); |
1368 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
4abe3520 | 1369 | if (crtc->fb) |
343065a6 | 1370 | crtcs_bound++; |
4abe3520 | 1371 | if (crtc->fb == fb_helper->fb) |
343065a6 | 1372 | bound++; |
4abe3520 DA |
1373 | } |
1374 | ||
343065a6 | 1375 | if (bound < crtcs_bound) { |
4abe3520 | 1376 | fb_helper->delayed_hotplug = true; |
7394371d CW |
1377 | mutex_unlock(&dev->mode_config.mutex); |
1378 | return 0; | |
4abe3520 | 1379 | } |
eb1f8e4f | 1380 | DRM_DEBUG_KMS("\n"); |
4abe3520 | 1381 | |
eb1f8e4f DA |
1382 | max_width = fb_helper->fb->width; |
1383 | max_height = fb_helper->fb->height; | |
1384 | bpp_sel = fb_helper->fb->bits_per_pixel; | |
5c4426a7 | 1385 | |
eb1f8e4f DA |
1386 | count = drm_fb_helper_probe_connector_modes(fb_helper, max_width, |
1387 | max_height); | |
1388 | drm_setup_crtcs(fb_helper); | |
7394371d | 1389 | mutex_unlock(&dev->mode_config.mutex); |
4abe3520 | 1390 | |
eb1f8e4f | 1391 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
5c4426a7 | 1392 | } |
eb1f8e4f | 1393 | EXPORT_SYMBOL(drm_fb_helper_hotplug_event); |
5c4426a7 | 1394 | |
6a108a14 | 1395 | /* The Kconfig DRM_KMS_HELPER selects FRAMEBUFFER_CONSOLE (if !EXPERT) |
3ce05168 DF |
1396 | * but the module doesn't depend on any fb console symbols. At least |
1397 | * attempt to load fbcon to avoid leaving the system without a usable console. | |
1398 | */ | |
6a108a14 | 1399 | #if defined(CONFIG_FRAMEBUFFER_CONSOLE_MODULE) && !defined(CONFIG_EXPERT) |
3ce05168 DF |
1400 | static int __init drm_fb_helper_modinit(void) |
1401 | { | |
1402 | const char *name = "fbcon"; | |
1403 | struct module *fbcon; | |
1404 | ||
1405 | mutex_lock(&module_mutex); | |
1406 | fbcon = find_module(name); | |
1407 | mutex_unlock(&module_mutex); | |
1408 | ||
1409 | if (!fbcon) | |
1410 | request_module_nowait(name); | |
1411 | return 0; | |
1412 | } | |
1413 | ||
1414 | module_init(drm_fb_helper_modinit); | |
1415 | #endif |