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Commit | Line | Data |
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785b93ef DA |
1 | /* |
2 | * Copyright (c) 2006-2009 Red Hat Inc. | |
3 | * Copyright (c) 2006-2008 Intel Corporation | |
4 | * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> | |
5 | * | |
6 | * DRM framebuffer helper functions | |
7 | * | |
8 | * Permission to use, copy, modify, distribute, and sell this software and its | |
9 | * documentation for any purpose is hereby granted without fee, provided that | |
10 | * the above copyright notice appear in all copies and that both that copyright | |
11 | * notice and this permission notice appear in supporting documentation, and | |
12 | * that the name of the copyright holders not be used in advertising or | |
13 | * publicity pertaining to distribution of the software without specific, | |
14 | * written prior permission. The copyright holders make no representations | |
15 | * about the suitability of this software for any purpose. It is provided "as | |
16 | * is" without express or implied warranty. | |
17 | * | |
18 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
19 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
20 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
21 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
22 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
23 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
24 | * OF THIS SOFTWARE. | |
25 | * | |
26 | * Authors: | |
27 | * Dave Airlie <airlied@linux.ie> | |
28 | * Jesse Barnes <jesse.barnes@intel.com> | |
29 | */ | |
3b40a443 | 30 | #include <linux/kernel.h> |
785b93ef | 31 | #include <linux/sysrq.h> |
5a0e3ad6 | 32 | #include <linux/slab.h> |
785b93ef DA |
33 | #include <linux/fb.h> |
34 | #include "drmP.h" | |
35 | #include "drm_crtc.h" | |
36 | #include "drm_fb_helper.h" | |
37 | #include "drm_crtc_helper.h" | |
38 | ||
6fcefd56 DA |
39 | MODULE_AUTHOR("David Airlie, Jesse Barnes"); |
40 | MODULE_DESCRIPTION("DRM KMS helper"); | |
41 | MODULE_LICENSE("GPL and additional rights"); | |
42 | ||
785b93ef DA |
43 | static LIST_HEAD(kernel_fb_helper_list); |
44 | ||
0b4c0f3f DA |
45 | /* simple single crtc case helper function */ |
46 | int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper) | |
d50ba256 | 47 | { |
0b4c0f3f DA |
48 | struct drm_device *dev = fb_helper->dev; |
49 | struct drm_connector *connector; | |
50 | int i; | |
d50ba256 | 51 | |
0b4c0f3f DA |
52 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
53 | struct drm_fb_helper_connector *fb_helper_connector; | |
54 | ||
55 | fb_helper_connector = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL); | |
56 | if (!fb_helper_connector) | |
57 | goto fail; | |
d50ba256 | 58 | |
0b4c0f3f DA |
59 | fb_helper_connector->connector = connector; |
60 | fb_helper->connector_info[fb_helper->connector_count++] = fb_helper_connector; | |
61 | } | |
d50ba256 | 62 | return 0; |
0b4c0f3f DA |
63 | fail: |
64 | for (i = 0; i < fb_helper->connector_count; i++) { | |
65 | kfree(fb_helper->connector_info[i]); | |
66 | fb_helper->connector_info[i] = NULL; | |
67 | } | |
68 | fb_helper->connector_count = 0; | |
69 | return -ENOMEM; | |
d50ba256 | 70 | } |
0b4c0f3f | 71 | EXPORT_SYMBOL(drm_fb_helper_single_add_all_connectors); |
d50ba256 | 72 | |
d50ba256 DA |
73 | /** |
74 | * drm_fb_helper_connector_parse_command_line - parse command line for connector | |
75 | * @connector - connector to parse line for | |
76 | * @mode_option - per connector mode option | |
77 | * | |
78 | * This parses the connector specific then generic command lines for | |
79 | * modes and options to configure the connector. | |
80 | * | |
81 | * This uses the same parameters as the fb modedb.c, except for extra | |
82 | * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m][eDd] | |
83 | * | |
84 | * enable/enable Digital/disable bit at the end | |
85 | */ | |
0b4c0f3f | 86 | static bool drm_fb_helper_connector_parse_command_line(struct drm_fb_helper_connector *fb_helper_conn, |
d50ba256 DA |
87 | const char *mode_option) |
88 | { | |
89 | const char *name; | |
90 | unsigned int namelen; | |
91 | int res_specified = 0, bpp_specified = 0, refresh_specified = 0; | |
92 | unsigned int xres = 0, yres = 0, bpp = 32, refresh = 0; | |
93 | int yres_specified = 0, cvt = 0, rb = 0, interlace = 0, margins = 0; | |
94 | int i; | |
95 | enum drm_connector_force force = DRM_FORCE_UNSPECIFIED; | |
8ef8678c | 96 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
09f0c489 | 97 | struct drm_connector *connector; |
d50ba256 | 98 | |
0b4c0f3f | 99 | if (!fb_helper_conn) |
8ef8678c | 100 | return false; |
09f0c489 | 101 | connector = fb_helper_conn->connector; |
8ef8678c | 102 | |
0b4c0f3f | 103 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
d50ba256 DA |
104 | if (!mode_option) |
105 | mode_option = fb_mode_option; | |
106 | ||
107 | if (!mode_option) { | |
108 | cmdline_mode->specified = false; | |
109 | return false; | |
110 | } | |
111 | ||
112 | name = mode_option; | |
113 | namelen = strlen(name); | |
114 | for (i = namelen-1; i >= 0; i--) { | |
115 | switch (name[i]) { | |
116 | case '@': | |
117 | namelen = i; | |
118 | if (!refresh_specified && !bpp_specified && | |
119 | !yres_specified) { | |
3b40a443 | 120 | refresh = simple_strtol(&name[i+1], NULL, 10); |
d50ba256 DA |
121 | refresh_specified = 1; |
122 | if (cvt || rb) | |
123 | cvt = 0; | |
124 | } else | |
125 | goto done; | |
126 | break; | |
127 | case '-': | |
128 | namelen = i; | |
129 | if (!bpp_specified && !yres_specified) { | |
3b40a443 | 130 | bpp = simple_strtol(&name[i+1], NULL, 10); |
d50ba256 DA |
131 | bpp_specified = 1; |
132 | if (cvt || rb) | |
133 | cvt = 0; | |
134 | } else | |
135 | goto done; | |
136 | break; | |
137 | case 'x': | |
138 | if (!yres_specified) { | |
3b40a443 | 139 | yres = simple_strtol(&name[i+1], NULL, 10); |
d50ba256 DA |
140 | yres_specified = 1; |
141 | } else | |
142 | goto done; | |
143 | case '0' ... '9': | |
144 | break; | |
145 | case 'M': | |
146 | if (!yres_specified) | |
147 | cvt = 1; | |
148 | break; | |
149 | case 'R': | |
b829e011 | 150 | if (cvt) |
d50ba256 DA |
151 | rb = 1; |
152 | break; | |
153 | case 'm': | |
154 | if (!cvt) | |
155 | margins = 1; | |
156 | break; | |
157 | case 'i': | |
158 | if (!cvt) | |
159 | interlace = 1; | |
160 | break; | |
161 | case 'e': | |
162 | force = DRM_FORCE_ON; | |
163 | break; | |
164 | case 'D': | |
e89a8c90 | 165 | if ((connector->connector_type != DRM_MODE_CONNECTOR_DVII) && |
d50ba256 DA |
166 | (connector->connector_type != DRM_MODE_CONNECTOR_HDMIB)) |
167 | force = DRM_FORCE_ON; | |
168 | else | |
169 | force = DRM_FORCE_ON_DIGITAL; | |
170 | break; | |
171 | case 'd': | |
172 | force = DRM_FORCE_OFF; | |
173 | break; | |
174 | default: | |
175 | goto done; | |
176 | } | |
177 | } | |
178 | if (i < 0 && yres_specified) { | |
3b40a443 | 179 | xres = simple_strtol(name, NULL, 10); |
d50ba256 DA |
180 | res_specified = 1; |
181 | } | |
182 | done: | |
183 | ||
184 | DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n", | |
185 | drm_get_connector_name(connector), xres, yres, | |
186 | (refresh) ? refresh : 60, (rb) ? " reduced blanking" : | |
187 | "", (margins) ? " with margins" : "", (interlace) ? | |
188 | " interlaced" : ""); | |
189 | ||
190 | if (force) { | |
191 | const char *s; | |
192 | switch (force) { | |
193 | case DRM_FORCE_OFF: s = "OFF"; break; | |
194 | case DRM_FORCE_ON_DIGITAL: s = "ON - dig"; break; | |
195 | default: | |
196 | case DRM_FORCE_ON: s = "ON"; break; | |
197 | } | |
198 | ||
199 | DRM_INFO("forcing %s connector %s\n", | |
200 | drm_get_connector_name(connector), s); | |
201 | connector->force = force; | |
202 | } | |
203 | ||
204 | if (res_specified) { | |
205 | cmdline_mode->specified = true; | |
206 | cmdline_mode->xres = xres; | |
207 | cmdline_mode->yres = yres; | |
208 | } | |
209 | ||
210 | if (refresh_specified) { | |
211 | cmdline_mode->refresh_specified = true; | |
212 | cmdline_mode->refresh = refresh; | |
213 | } | |
214 | ||
215 | if (bpp_specified) { | |
216 | cmdline_mode->bpp_specified = true; | |
217 | cmdline_mode->bpp = bpp; | |
218 | } | |
219 | cmdline_mode->rb = rb ? true : false; | |
220 | cmdline_mode->cvt = cvt ? true : false; | |
221 | cmdline_mode->interlace = interlace ? true : false; | |
222 | ||
223 | return true; | |
224 | } | |
225 | ||
0b4c0f3f | 226 | static int drm_fb_helper_parse_command_line(struct drm_fb_helper *fb_helper) |
d50ba256 | 227 | { |
0b4c0f3f DA |
228 | struct drm_fb_helper_connector *fb_helper_conn; |
229 | int i; | |
d50ba256 | 230 | |
0b4c0f3f | 231 | for (i = 0; i < fb_helper->connector_count; i++) { |
d50ba256 DA |
232 | char *option = NULL; |
233 | ||
0b4c0f3f DA |
234 | fb_helper_conn = fb_helper->connector_info[i]; |
235 | ||
d50ba256 | 236 | /* do something on return - turn off connector maybe */ |
0b4c0f3f | 237 | if (fb_get_options(drm_get_connector_name(fb_helper_conn->connector), &option)) |
d50ba256 DA |
238 | continue; |
239 | ||
0b4c0f3f | 240 | drm_fb_helper_connector_parse_command_line(fb_helper_conn, option); |
d50ba256 DA |
241 | } |
242 | return 0; | |
243 | } | |
244 | ||
785b93ef DA |
245 | bool drm_fb_helper_force_kernel_mode(void) |
246 | { | |
247 | int i = 0; | |
248 | bool ret, error = false; | |
249 | struct drm_fb_helper *helper; | |
250 | ||
251 | if (list_empty(&kernel_fb_helper_list)) | |
252 | return false; | |
253 | ||
254 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { | |
255 | for (i = 0; i < helper->crtc_count; i++) { | |
256 | struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set; | |
257 | ret = drm_crtc_helper_set_config(mode_set); | |
258 | if (ret) | |
259 | error = true; | |
260 | } | |
261 | } | |
262 | return error; | |
263 | } | |
264 | ||
265 | int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed, | |
266 | void *panic_str) | |
267 | { | |
fc2362af | 268 | printk(KERN_ERR "panic occurred, switching back to text console\n"); |
785b93ef DA |
269 | return drm_fb_helper_force_kernel_mode(); |
270 | return 0; | |
271 | } | |
272 | EXPORT_SYMBOL(drm_fb_helper_panic); | |
273 | ||
274 | static struct notifier_block paniced = { | |
275 | .notifier_call = drm_fb_helper_panic, | |
276 | }; | |
277 | ||
278 | /** | |
279 | * drm_fb_helper_restore - restore the framebuffer console (kernel) config | |
280 | * | |
281 | * Restore's the kernel's fbcon mode, used for lastclose & panic paths. | |
282 | */ | |
283 | void drm_fb_helper_restore(void) | |
284 | { | |
285 | bool ret; | |
286 | ret = drm_fb_helper_force_kernel_mode(); | |
287 | if (ret == true) | |
288 | DRM_ERROR("Failed to restore crtc configuration\n"); | |
289 | } | |
290 | EXPORT_SYMBOL(drm_fb_helper_restore); | |
291 | ||
bea1d35b | 292 | #ifdef CONFIG_MAGIC_SYSRQ |
785b93ef DA |
293 | static void drm_fb_helper_restore_work_fn(struct work_struct *ignored) |
294 | { | |
295 | drm_fb_helper_restore(); | |
296 | } | |
297 | static DECLARE_WORK(drm_fb_helper_restore_work, drm_fb_helper_restore_work_fn); | |
298 | ||
299 | static void drm_fb_helper_sysrq(int dummy1, struct tty_struct *dummy3) | |
300 | { | |
301 | schedule_work(&drm_fb_helper_restore_work); | |
302 | } | |
303 | ||
304 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { | |
305 | .handler = drm_fb_helper_sysrq, | |
306 | .help_msg = "force-fb(V)", | |
307 | .action_msg = "Restore framebuffer console", | |
308 | }; | |
b8c40d62 RD |
309 | #else |
310 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { }; | |
bea1d35b | 311 | #endif |
785b93ef DA |
312 | |
313 | static void drm_fb_helper_on(struct fb_info *info) | |
314 | { | |
315 | struct drm_fb_helper *fb_helper = info->par; | |
316 | struct drm_device *dev = fb_helper->dev; | |
317 | struct drm_crtc *crtc; | |
8be48d92 | 318 | struct drm_crtc_helper_funcs *crtc_funcs; |
023eb571 | 319 | struct drm_connector *connector; |
785b93ef | 320 | struct drm_encoder *encoder; |
023eb571 | 321 | int i, j; |
785b93ef DA |
322 | |
323 | /* | |
324 | * For each CRTC in this fb, turn the crtc on then, | |
325 | * find all associated encoders and turn them on. | |
326 | */ | |
8be48d92 | 327 | mutex_lock(&dev->mode_config.mutex); |
e87b2c42 | 328 | for (i = 0; i < fb_helper->crtc_count; i++) { |
8be48d92 DA |
329 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
330 | crtc_funcs = crtc->helper_private; | |
785b93ef | 331 | |
8be48d92 DA |
332 | if (!crtc->enabled) |
333 | continue; | |
334 | ||
335 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); | |
785b93ef | 336 | |
023eb571 JB |
337 | /* Walk the connectors & encoders on this fb turning them on */ |
338 | for (j = 0; j < fb_helper->connector_count; j++) { | |
339 | connector = fb_helper->connector_info[j]->connector; | |
340 | connector->dpms = DRM_MODE_DPMS_ON; | |
341 | drm_connector_property_set_value(connector, | |
342 | dev->mode_config.dpms_property, | |
343 | DRM_MODE_DPMS_ON); | |
344 | } | |
8be48d92 DA |
345 | /* Found a CRTC on this fb, now find encoders */ |
346 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
347 | if (encoder->crtc == crtc) { | |
348 | struct drm_encoder_helper_funcs *encoder_funcs; | |
785b93ef | 349 | |
8be48d92 DA |
350 | encoder_funcs = encoder->helper_private; |
351 | encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); | |
785b93ef DA |
352 | } |
353 | } | |
354 | } | |
8be48d92 | 355 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
356 | } |
357 | ||
358 | static void drm_fb_helper_off(struct fb_info *info, int dpms_mode) | |
359 | { | |
360 | struct drm_fb_helper *fb_helper = info->par; | |
361 | struct drm_device *dev = fb_helper->dev; | |
362 | struct drm_crtc *crtc; | |
8be48d92 | 363 | struct drm_crtc_helper_funcs *crtc_funcs; |
023eb571 | 364 | struct drm_connector *connector; |
785b93ef | 365 | struct drm_encoder *encoder; |
023eb571 | 366 | int i, j; |
785b93ef DA |
367 | |
368 | /* | |
369 | * For each CRTC in this fb, find all associated encoders | |
370 | * and turn them off, then turn off the CRTC. | |
371 | */ | |
8be48d92 | 372 | mutex_lock(&dev->mode_config.mutex); |
e87b2c42 | 373 | for (i = 0; i < fb_helper->crtc_count; i++) { |
8be48d92 DA |
374 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
375 | crtc_funcs = crtc->helper_private; | |
e87b2c42 | 376 | |
8be48d92 DA |
377 | if (!crtc->enabled) |
378 | continue; | |
e87b2c42 | 379 | |
023eb571 JB |
380 | /* Walk the connectors on this fb and mark them off */ |
381 | for (j = 0; j < fb_helper->connector_count; j++) { | |
382 | connector = fb_helper->connector_info[j]->connector; | |
383 | connector->dpms = dpms_mode; | |
384 | drm_connector_property_set_value(connector, | |
385 | dev->mode_config.dpms_property, | |
386 | dpms_mode); | |
387 | } | |
8be48d92 DA |
388 | /* Found a CRTC on this fb, now find encoders */ |
389 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
390 | if (encoder->crtc == crtc) { | |
391 | struct drm_encoder_helper_funcs *encoder_funcs; | |
e87b2c42 | 392 | |
8be48d92 DA |
393 | encoder_funcs = encoder->helper_private; |
394 | encoder_funcs->dpms(encoder, dpms_mode); | |
e87b2c42 | 395 | } |
785b93ef | 396 | } |
8be48d92 | 397 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF); |
785b93ef | 398 | } |
8be48d92 | 399 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
400 | } |
401 | ||
402 | int drm_fb_helper_blank(int blank, struct fb_info *info) | |
403 | { | |
404 | switch (blank) { | |
731b5a15 | 405 | /* Display: On; HSync: On, VSync: On */ |
785b93ef DA |
406 | case FB_BLANK_UNBLANK: |
407 | drm_fb_helper_on(info); | |
408 | break; | |
731b5a15 | 409 | /* Display: Off; HSync: On, VSync: On */ |
785b93ef | 410 | case FB_BLANK_NORMAL: |
5fd4df4d | 411 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); |
785b93ef | 412 | break; |
731b5a15 | 413 | /* Display: Off; HSync: Off, VSync: On */ |
785b93ef DA |
414 | case FB_BLANK_HSYNC_SUSPEND: |
415 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); | |
416 | break; | |
731b5a15 | 417 | /* Display: Off; HSync: On, VSync: Off */ |
785b93ef DA |
418 | case FB_BLANK_VSYNC_SUSPEND: |
419 | drm_fb_helper_off(info, DRM_MODE_DPMS_SUSPEND); | |
420 | break; | |
731b5a15 | 421 | /* Display: Off; HSync: Off, VSync: Off */ |
785b93ef DA |
422 | case FB_BLANK_POWERDOWN: |
423 | drm_fb_helper_off(info, DRM_MODE_DPMS_OFF); | |
424 | break; | |
425 | } | |
426 | return 0; | |
427 | } | |
428 | EXPORT_SYMBOL(drm_fb_helper_blank); | |
429 | ||
430 | static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) | |
431 | { | |
432 | int i; | |
433 | ||
0b4c0f3f DA |
434 | for (i = 0; i < helper->connector_count; i++) |
435 | kfree(helper->connector_info[i]); | |
436 | kfree(helper->connector_info); | |
785b93ef DA |
437 | for (i = 0; i < helper->crtc_count; i++) |
438 | kfree(helper->crtc_info[i].mode_set.connectors); | |
439 | kfree(helper->crtc_info); | |
440 | } | |
441 | ||
4abe3520 DA |
442 | int drm_fb_helper_init(struct drm_device *dev, |
443 | struct drm_fb_helper *fb_helper, | |
eb1f8e4f | 444 | int crtc_count, int max_conn_count) |
785b93ef | 445 | { |
785b93ef DA |
446 | struct drm_crtc *crtc; |
447 | int ret = 0; | |
448 | int i; | |
449 | ||
4abe3520 | 450 | fb_helper->dev = dev; |
4abe3520 DA |
451 | |
452 | INIT_LIST_HEAD(&fb_helper->kernel_fb_list); | |
453 | ||
454 | fb_helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL); | |
455 | if (!fb_helper->crtc_info) | |
785b93ef DA |
456 | return -ENOMEM; |
457 | ||
4abe3520 DA |
458 | fb_helper->crtc_count = crtc_count; |
459 | fb_helper->connector_info = kcalloc(dev->mode_config.num_connector, sizeof(struct drm_fb_helper_connector *), GFP_KERNEL); | |
460 | if (!fb_helper->connector_info) { | |
461 | kfree(fb_helper->crtc_info); | |
0b4c0f3f DA |
462 | return -ENOMEM; |
463 | } | |
4abe3520 | 464 | fb_helper->connector_count = 0; |
785b93ef DA |
465 | |
466 | for (i = 0; i < crtc_count; i++) { | |
4abe3520 | 467 | fb_helper->crtc_info[i].mode_set.connectors = |
785b93ef DA |
468 | kcalloc(max_conn_count, |
469 | sizeof(struct drm_connector *), | |
470 | GFP_KERNEL); | |
471 | ||
4abe3520 | 472 | if (!fb_helper->crtc_info[i].mode_set.connectors) { |
785b93ef DA |
473 | ret = -ENOMEM; |
474 | goto out_free; | |
475 | } | |
4abe3520 | 476 | fb_helper->crtc_info[i].mode_set.num_connectors = 0; |
785b93ef DA |
477 | } |
478 | ||
479 | i = 0; | |
480 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
4abe3520 DA |
481 | fb_helper->crtc_info[i].crtc_id = crtc->base.id; |
482 | fb_helper->crtc_info[i].mode_set.crtc = crtc; | |
785b93ef DA |
483 | i++; |
484 | } | |
4abe3520 | 485 | fb_helper->conn_limit = max_conn_count; |
785b93ef DA |
486 | return 0; |
487 | out_free: | |
4abe3520 | 488 | drm_fb_helper_crtc_free(fb_helper); |
785b93ef DA |
489 | return -ENOMEM; |
490 | } | |
4abe3520 DA |
491 | EXPORT_SYMBOL(drm_fb_helper_init); |
492 | ||
493 | void drm_fb_helper_fini(struct drm_fb_helper *fb_helper) | |
494 | { | |
495 | if (!list_empty(&fb_helper->kernel_fb_list)) { | |
496 | list_del(&fb_helper->kernel_fb_list); | |
497 | if (list_empty(&kernel_fb_helper_list)) { | |
3da1f33e | 498 | printk(KERN_INFO "drm: unregistered panic notifier\n"); |
4abe3520 DA |
499 | atomic_notifier_chain_unregister(&panic_notifier_list, |
500 | &paniced); | |
501 | unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
502 | } | |
503 | } | |
504 | ||
505 | drm_fb_helper_crtc_free(fb_helper); | |
506 | ||
4abe3520 DA |
507 | } |
508 | EXPORT_SYMBOL(drm_fb_helper_fini); | |
785b93ef | 509 | |
c850cb78 | 510 | static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, |
b8c00ac5 DA |
511 | u16 blue, u16 regno, struct fb_info *info) |
512 | { | |
513 | struct drm_fb_helper *fb_helper = info->par; | |
514 | struct drm_framebuffer *fb = fb_helper->fb; | |
515 | int pindex; | |
516 | ||
c850cb78 DA |
517 | if (info->fix.visual == FB_VISUAL_TRUECOLOR) { |
518 | u32 *palette; | |
519 | u32 value; | |
520 | /* place color in psuedopalette */ | |
521 | if (regno > 16) | |
522 | return -EINVAL; | |
523 | palette = (u32 *)info->pseudo_palette; | |
524 | red >>= (16 - info->var.red.length); | |
525 | green >>= (16 - info->var.green.length); | |
526 | blue >>= (16 - info->var.blue.length); | |
527 | value = (red << info->var.red.offset) | | |
528 | (green << info->var.green.offset) | | |
529 | (blue << info->var.blue.offset); | |
530 | palette[regno] = value; | |
531 | return 0; | |
532 | } | |
533 | ||
b8c00ac5 DA |
534 | pindex = regno; |
535 | ||
536 | if (fb->bits_per_pixel == 16) { | |
537 | pindex = regno << 3; | |
538 | ||
539 | if (fb->depth == 16 && regno > 63) | |
c850cb78 | 540 | return -EINVAL; |
b8c00ac5 | 541 | if (fb->depth == 15 && regno > 31) |
c850cb78 | 542 | return -EINVAL; |
b8c00ac5 DA |
543 | |
544 | if (fb->depth == 16) { | |
545 | u16 r, g, b; | |
546 | int i; | |
547 | if (regno < 32) { | |
548 | for (i = 0; i < 8; i++) | |
549 | fb_helper->funcs->gamma_set(crtc, red, | |
550 | green, blue, pindex + i); | |
551 | } | |
552 | ||
553 | fb_helper->funcs->gamma_get(crtc, &r, | |
554 | &g, &b, | |
555 | pindex >> 1); | |
556 | ||
557 | for (i = 0; i < 4; i++) | |
558 | fb_helper->funcs->gamma_set(crtc, r, | |
559 | green, b, | |
560 | (pindex >> 1) + i); | |
561 | } | |
562 | } | |
563 | ||
564 | if (fb->depth != 16) | |
565 | fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex); | |
c850cb78 | 566 | return 0; |
b8c00ac5 DA |
567 | } |
568 | ||
068143d3 DA |
569 | int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) |
570 | { | |
571 | struct drm_fb_helper *fb_helper = info->par; | |
8be48d92 | 572 | struct drm_crtc_helper_funcs *crtc_funcs; |
068143d3 DA |
573 | u16 *red, *green, *blue, *transp; |
574 | struct drm_crtc *crtc; | |
575 | int i, rc = 0; | |
576 | int start; | |
577 | ||
8be48d92 DA |
578 | for (i = 0; i < fb_helper->crtc_count; i++) { |
579 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
580 | crtc_funcs = crtc->helper_private; | |
068143d3 DA |
581 | |
582 | red = cmap->red; | |
583 | green = cmap->green; | |
584 | blue = cmap->blue; | |
585 | transp = cmap->transp; | |
586 | start = cmap->start; | |
587 | ||
588 | for (i = 0; i < cmap->len; i++) { | |
589 | u16 hred, hgreen, hblue, htransp = 0xffff; | |
590 | ||
591 | hred = *red++; | |
592 | hgreen = *green++; | |
593 | hblue = *blue++; | |
594 | ||
595 | if (transp) | |
596 | htransp = *transp++; | |
597 | ||
c850cb78 DA |
598 | rc = setcolreg(crtc, hred, hgreen, hblue, start++, info); |
599 | if (rc) | |
600 | return rc; | |
068143d3 DA |
601 | } |
602 | crtc_funcs->load_lut(crtc); | |
603 | } | |
604 | return rc; | |
605 | } | |
606 | EXPORT_SYMBOL(drm_fb_helper_setcmap); | |
607 | ||
785b93ef DA |
608 | int drm_fb_helper_check_var(struct fb_var_screeninfo *var, |
609 | struct fb_info *info) | |
610 | { | |
611 | struct drm_fb_helper *fb_helper = info->par; | |
612 | struct drm_framebuffer *fb = fb_helper->fb; | |
613 | int depth; | |
614 | ||
5349ef31 | 615 | if (var->pixclock != 0) |
785b93ef DA |
616 | return -EINVAL; |
617 | ||
618 | /* Need to resize the fb object !!! */ | |
509c7d83 DA |
619 | if (var->bits_per_pixel > fb->bits_per_pixel || var->xres > fb->width || var->yres > fb->height) { |
620 | DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb " | |
621 | "object %dx%d-%d > %dx%d-%d\n", var->xres, var->yres, var->bits_per_pixel, | |
622 | fb->width, fb->height, fb->bits_per_pixel); | |
785b93ef DA |
623 | return -EINVAL; |
624 | } | |
625 | ||
626 | switch (var->bits_per_pixel) { | |
627 | case 16: | |
628 | depth = (var->green.length == 6) ? 16 : 15; | |
629 | break; | |
630 | case 32: | |
631 | depth = (var->transp.length > 0) ? 32 : 24; | |
632 | break; | |
633 | default: | |
634 | depth = var->bits_per_pixel; | |
635 | break; | |
636 | } | |
637 | ||
638 | switch (depth) { | |
639 | case 8: | |
640 | var->red.offset = 0; | |
641 | var->green.offset = 0; | |
642 | var->blue.offset = 0; | |
643 | var->red.length = 8; | |
644 | var->green.length = 8; | |
645 | var->blue.length = 8; | |
646 | var->transp.length = 0; | |
647 | var->transp.offset = 0; | |
648 | break; | |
649 | case 15: | |
650 | var->red.offset = 10; | |
651 | var->green.offset = 5; | |
652 | var->blue.offset = 0; | |
653 | var->red.length = 5; | |
654 | var->green.length = 5; | |
655 | var->blue.length = 5; | |
656 | var->transp.length = 1; | |
657 | var->transp.offset = 15; | |
658 | break; | |
659 | case 16: | |
660 | var->red.offset = 11; | |
661 | var->green.offset = 5; | |
662 | var->blue.offset = 0; | |
663 | var->red.length = 5; | |
664 | var->green.length = 6; | |
665 | var->blue.length = 5; | |
666 | var->transp.length = 0; | |
667 | var->transp.offset = 0; | |
668 | break; | |
669 | case 24: | |
670 | var->red.offset = 16; | |
671 | var->green.offset = 8; | |
672 | var->blue.offset = 0; | |
673 | var->red.length = 8; | |
674 | var->green.length = 8; | |
675 | var->blue.length = 8; | |
676 | var->transp.length = 0; | |
677 | var->transp.offset = 0; | |
678 | break; | |
679 | case 32: | |
680 | var->red.offset = 16; | |
681 | var->green.offset = 8; | |
682 | var->blue.offset = 0; | |
683 | var->red.length = 8; | |
684 | var->green.length = 8; | |
685 | var->blue.length = 8; | |
686 | var->transp.length = 8; | |
687 | var->transp.offset = 24; | |
688 | break; | |
689 | default: | |
690 | return -EINVAL; | |
691 | } | |
692 | return 0; | |
693 | } | |
694 | EXPORT_SYMBOL(drm_fb_helper_check_var); | |
695 | ||
696 | /* this will let fbcon do the mode init */ | |
697 | int drm_fb_helper_set_par(struct fb_info *info) | |
698 | { | |
699 | struct drm_fb_helper *fb_helper = info->par; | |
700 | struct drm_device *dev = fb_helper->dev; | |
701 | struct fb_var_screeninfo *var = &info->var; | |
702 | struct drm_crtc *crtc; | |
703 | int ret; | |
704 | int i; | |
705 | ||
5349ef31 | 706 | if (var->pixclock != 0) { |
172e91f5 | 707 | DRM_ERROR("PIXEL CLOCK SET\n"); |
785b93ef DA |
708 | return -EINVAL; |
709 | } | |
710 | ||
8be48d92 DA |
711 | mutex_lock(&dev->mode_config.mutex); |
712 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
713 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
0b4c0f3f DA |
714 | ret = crtc->funcs->set_config(&fb_helper->crtc_info[i].mode_set); |
715 | if (ret) { | |
785b93ef | 716 | mutex_unlock(&dev->mode_config.mutex); |
0b4c0f3f | 717 | return ret; |
785b93ef DA |
718 | } |
719 | } | |
8be48d92 | 720 | mutex_unlock(&dev->mode_config.mutex); |
4abe3520 DA |
721 | |
722 | if (fb_helper->delayed_hotplug) { | |
723 | fb_helper->delayed_hotplug = false; | |
eb1f8e4f | 724 | drm_fb_helper_hotplug_event(fb_helper); |
4abe3520 | 725 | } |
785b93ef DA |
726 | return 0; |
727 | } | |
728 | EXPORT_SYMBOL(drm_fb_helper_set_par); | |
729 | ||
730 | int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, | |
731 | struct fb_info *info) | |
732 | { | |
733 | struct drm_fb_helper *fb_helper = info->par; | |
734 | struct drm_device *dev = fb_helper->dev; | |
735 | struct drm_mode_set *modeset; | |
736 | struct drm_crtc *crtc; | |
737 | int ret = 0; | |
738 | int i; | |
739 | ||
8be48d92 DA |
740 | mutex_lock(&dev->mode_config.mutex); |
741 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
742 | crtc = fb_helper->crtc_info[i].mode_set.crtc; | |
785b93ef DA |
743 | |
744 | modeset = &fb_helper->crtc_info[i].mode_set; | |
745 | ||
746 | modeset->x = var->xoffset; | |
747 | modeset->y = var->yoffset; | |
748 | ||
749 | if (modeset->num_connectors) { | |
785b93ef | 750 | ret = crtc->funcs->set_config(modeset); |
785b93ef DA |
751 | if (!ret) { |
752 | info->var.xoffset = var->xoffset; | |
753 | info->var.yoffset = var->yoffset; | |
754 | } | |
755 | } | |
756 | } | |
8be48d92 | 757 | mutex_unlock(&dev->mode_config.mutex); |
785b93ef DA |
758 | return ret; |
759 | } | |
760 | EXPORT_SYMBOL(drm_fb_helper_pan_display); | |
761 | ||
8be48d92 DA |
762 | int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, |
763 | int preferred_bpp) | |
785b93ef | 764 | { |
785b93ef DA |
765 | int new_fb = 0; |
766 | int crtc_count = 0; | |
4abe3520 | 767 | int i; |
785b93ef | 768 | struct fb_info *info; |
38651674 | 769 | struct drm_fb_helper_surface_size sizes; |
8be48d92 | 770 | int gamma_size = 0; |
38651674 DA |
771 | |
772 | memset(&sizes, 0, sizeof(struct drm_fb_helper_surface_size)); | |
773 | sizes.surface_depth = 24; | |
774 | sizes.surface_bpp = 32; | |
775 | sizes.fb_width = (unsigned)-1; | |
776 | sizes.fb_height = (unsigned)-1; | |
785b93ef | 777 | |
b8c00ac5 DA |
778 | /* if driver picks 8 or 16 by default use that |
779 | for both depth/bpp */ | |
38651674 DA |
780 | if (preferred_bpp != sizes.surface_bpp) { |
781 | sizes.surface_depth = sizes.surface_bpp = preferred_bpp; | |
b8c00ac5 | 782 | } |
785b93ef | 783 | /* first up get a count of crtcs now in use and new min/maxes width/heights */ |
0b4c0f3f DA |
784 | for (i = 0; i < fb_helper->connector_count; i++) { |
785 | struct drm_fb_helper_connector *fb_helper_conn = fb_helper->connector_info[i]; | |
8ef8678c DA |
786 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
787 | ||
0b4c0f3f | 788 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
d50ba256 DA |
789 | |
790 | if (cmdline_mode->bpp_specified) { | |
791 | switch (cmdline_mode->bpp) { | |
792 | case 8: | |
38651674 | 793 | sizes.surface_depth = sizes.surface_bpp = 8; |
d50ba256 DA |
794 | break; |
795 | case 15: | |
38651674 DA |
796 | sizes.surface_depth = 15; |
797 | sizes.surface_bpp = 16; | |
d50ba256 DA |
798 | break; |
799 | case 16: | |
38651674 | 800 | sizes.surface_depth = sizes.surface_bpp = 16; |
d50ba256 DA |
801 | break; |
802 | case 24: | |
38651674 | 803 | sizes.surface_depth = sizes.surface_bpp = 24; |
d50ba256 DA |
804 | break; |
805 | case 32: | |
38651674 DA |
806 | sizes.surface_depth = 24; |
807 | sizes.surface_bpp = 32; | |
d50ba256 DA |
808 | break; |
809 | } | |
810 | break; | |
811 | } | |
812 | } | |
813 | ||
8be48d92 DA |
814 | crtc_count = 0; |
815 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
816 | struct drm_display_mode *desired_mode; | |
817 | desired_mode = fb_helper->crtc_info[i].desired_mode; | |
818 | ||
819 | if (desired_mode) { | |
820 | if (gamma_size == 0) | |
821 | gamma_size = fb_helper->crtc_info[i].mode_set.crtc->gamma_size; | |
822 | if (desired_mode->hdisplay < sizes.fb_width) | |
823 | sizes.fb_width = desired_mode->hdisplay; | |
824 | if (desired_mode->vdisplay < sizes.fb_height) | |
825 | sizes.fb_height = desired_mode->vdisplay; | |
826 | if (desired_mode->hdisplay > sizes.surface_width) | |
827 | sizes.surface_width = desired_mode->hdisplay; | |
828 | if (desired_mode->vdisplay > sizes.surface_height) | |
829 | sizes.surface_height = desired_mode->vdisplay; | |
785b93ef DA |
830 | crtc_count++; |
831 | } | |
832 | } | |
833 | ||
38651674 | 834 | if (crtc_count == 0 || sizes.fb_width == -1 || sizes.fb_height == -1) { |
785b93ef DA |
835 | /* hmm everyone went away - assume VGA cable just fell out |
836 | and will come back later. */ | |
eb1f8e4f | 837 | DRM_INFO("Cannot find any crtc or sizes - going 1024x768\n"); |
19b4b445 DA |
838 | sizes.fb_width = sizes.surface_width = 1024; |
839 | sizes.fb_height = sizes.surface_height = 768; | |
785b93ef DA |
840 | } |
841 | ||
38651674 | 842 | /* push down into drivers */ |
4abe3520 | 843 | new_fb = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes); |
38651674 DA |
844 | if (new_fb < 0) |
845 | return new_fb; | |
785b93ef | 846 | |
38651674 | 847 | info = fb_helper->fbdev; |
785b93ef | 848 | |
8be48d92 DA |
849 | /* set the fb pointer */ |
850 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
851 | fb_helper->crtc_info[i].mode_set.fb = fb_helper->fb; | |
785b93ef | 852 | } |
785b93ef DA |
853 | |
854 | if (new_fb) { | |
5349ef31 | 855 | info->var.pixclock = 0; |
3bea21b6 | 856 | if (register_framebuffer(info) < 0) { |
785b93ef | 857 | return -EINVAL; |
3bea21b6 | 858 | } |
38651674 DA |
859 | |
860 | printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, | |
861 | info->fix.id); | |
862 | ||
785b93ef DA |
863 | } else { |
864 | drm_fb_helper_set_par(info); | |
865 | } | |
785b93ef DA |
866 | |
867 | /* Switch back to kernel console on panic */ | |
868 | /* multi card linked list maybe */ | |
869 | if (list_empty(&kernel_fb_helper_list)) { | |
3da1f33e | 870 | printk(KERN_INFO "drm: registered panic notifier\n"); |
785b93ef DA |
871 | atomic_notifier_chain_register(&panic_notifier_list, |
872 | &paniced); | |
873 | register_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); | |
874 | } | |
38651674 DA |
875 | if (new_fb) |
876 | list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list); | |
877 | ||
785b93ef DA |
878 | return 0; |
879 | } | |
880 | EXPORT_SYMBOL(drm_fb_helper_single_fb_probe); | |
881 | ||
068143d3 DA |
882 | void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, |
883 | uint32_t depth) | |
785b93ef DA |
884 | { |
885 | info->fix.type = FB_TYPE_PACKED_PIXELS; | |
068143d3 | 886 | info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR : |
c850cb78 | 887 | FB_VISUAL_TRUECOLOR; |
785b93ef DA |
888 | info->fix.type_aux = 0; |
889 | info->fix.xpanstep = 1; /* doing it in hw */ | |
890 | info->fix.ypanstep = 1; /* doing it in hw */ | |
891 | info->fix.ywrapstep = 0; | |
3420e742 | 892 | info->fix.accel = FB_ACCEL_NONE; |
785b93ef DA |
893 | info->fix.type_aux = 0; |
894 | ||
895 | info->fix.line_length = pitch; | |
896 | return; | |
897 | } | |
898 | EXPORT_SYMBOL(drm_fb_helper_fill_fix); | |
899 | ||
38651674 | 900 | void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, |
785b93ef DA |
901 | uint32_t fb_width, uint32_t fb_height) |
902 | { | |
38651674 DA |
903 | struct drm_framebuffer *fb = fb_helper->fb; |
904 | info->pseudo_palette = fb_helper->pseudo_palette; | |
785b93ef DA |
905 | info->var.xres_virtual = fb->width; |
906 | info->var.yres_virtual = fb->height; | |
907 | info->var.bits_per_pixel = fb->bits_per_pixel; | |
908 | info->var.xoffset = 0; | |
909 | info->var.yoffset = 0; | |
910 | info->var.activate = FB_ACTIVATE_NOW; | |
911 | info->var.height = -1; | |
912 | info->var.width = -1; | |
913 | ||
914 | switch (fb->depth) { | |
915 | case 8: | |
916 | info->var.red.offset = 0; | |
917 | info->var.green.offset = 0; | |
918 | info->var.blue.offset = 0; | |
919 | info->var.red.length = 8; /* 8bit DAC */ | |
920 | info->var.green.length = 8; | |
921 | info->var.blue.length = 8; | |
922 | info->var.transp.offset = 0; | |
923 | info->var.transp.length = 0; | |
924 | break; | |
925 | case 15: | |
926 | info->var.red.offset = 10; | |
927 | info->var.green.offset = 5; | |
928 | info->var.blue.offset = 0; | |
929 | info->var.red.length = 5; | |
930 | info->var.green.length = 5; | |
931 | info->var.blue.length = 5; | |
932 | info->var.transp.offset = 15; | |
933 | info->var.transp.length = 1; | |
934 | break; | |
935 | case 16: | |
936 | info->var.red.offset = 11; | |
937 | info->var.green.offset = 5; | |
938 | info->var.blue.offset = 0; | |
939 | info->var.red.length = 5; | |
940 | info->var.green.length = 6; | |
941 | info->var.blue.length = 5; | |
942 | info->var.transp.offset = 0; | |
943 | break; | |
944 | case 24: | |
945 | info->var.red.offset = 16; | |
946 | info->var.green.offset = 8; | |
947 | info->var.blue.offset = 0; | |
948 | info->var.red.length = 8; | |
949 | info->var.green.length = 8; | |
950 | info->var.blue.length = 8; | |
951 | info->var.transp.offset = 0; | |
952 | info->var.transp.length = 0; | |
953 | break; | |
954 | case 32: | |
955 | info->var.red.offset = 16; | |
956 | info->var.green.offset = 8; | |
957 | info->var.blue.offset = 0; | |
958 | info->var.red.length = 8; | |
959 | info->var.green.length = 8; | |
960 | info->var.blue.length = 8; | |
961 | info->var.transp.offset = 24; | |
962 | info->var.transp.length = 8; | |
963 | break; | |
964 | default: | |
965 | break; | |
966 | } | |
967 | ||
968 | info->var.xres = fb_width; | |
969 | info->var.yres = fb_height; | |
970 | } | |
971 | EXPORT_SYMBOL(drm_fb_helper_fill_var); | |
38651674 | 972 | |
0b4c0f3f DA |
973 | static int drm_fb_helper_probe_connector_modes(struct drm_fb_helper *fb_helper, |
974 | uint32_t maxX, | |
975 | uint32_t maxY) | |
38651674 DA |
976 | { |
977 | struct drm_connector *connector; | |
978 | int count = 0; | |
0b4c0f3f | 979 | int i; |
38651674 | 980 | |
0b4c0f3f DA |
981 | for (i = 0; i < fb_helper->connector_count; i++) { |
982 | connector = fb_helper->connector_info[i]->connector; | |
38651674 DA |
983 | count += connector->funcs->fill_modes(connector, maxX, maxY); |
984 | } | |
985 | ||
986 | return count; | |
987 | } | |
988 | ||
0b4c0f3f | 989 | static struct drm_display_mode *drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, int width, int height) |
38651674 DA |
990 | { |
991 | struct drm_display_mode *mode; | |
992 | ||
0b4c0f3f | 993 | list_for_each_entry(mode, &fb_connector->connector->modes, head) { |
38651674 DA |
994 | if (drm_mode_width(mode) > width || |
995 | drm_mode_height(mode) > height) | |
996 | continue; | |
997 | if (mode->type & DRM_MODE_TYPE_PREFERRED) | |
998 | return mode; | |
999 | } | |
1000 | return NULL; | |
1001 | } | |
1002 | ||
0b4c0f3f | 1003 | static bool drm_has_cmdline_mode(struct drm_fb_helper_connector *fb_connector) |
38651674 | 1004 | { |
38651674 | 1005 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
0b4c0f3f | 1006 | cmdline_mode = &fb_connector->cmdline_mode; |
38651674 DA |
1007 | return cmdline_mode->specified; |
1008 | } | |
1009 | ||
0b4c0f3f DA |
1010 | static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn, |
1011 | int width, int height) | |
38651674 | 1012 | { |
38651674 DA |
1013 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
1014 | struct drm_display_mode *mode = NULL; | |
1015 | ||
0b4c0f3f | 1016 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
38651674 DA |
1017 | if (cmdline_mode->specified == false) |
1018 | return mode; | |
1019 | ||
1020 | /* attempt to find a matching mode in the list of modes | |
1021 | * we have gotten so far, if not add a CVT mode that conforms | |
1022 | */ | |
1023 | if (cmdline_mode->rb || cmdline_mode->margins) | |
1024 | goto create_mode; | |
1025 | ||
0b4c0f3f | 1026 | list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { |
38651674 DA |
1027 | /* check width/height */ |
1028 | if (mode->hdisplay != cmdline_mode->xres || | |
1029 | mode->vdisplay != cmdline_mode->yres) | |
1030 | continue; | |
1031 | ||
1032 | if (cmdline_mode->refresh_specified) { | |
1033 | if (mode->vrefresh != cmdline_mode->refresh) | |
1034 | continue; | |
1035 | } | |
1036 | ||
1037 | if (cmdline_mode->interlace) { | |
1038 | if (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) | |
1039 | continue; | |
1040 | } | |
1041 | return mode; | |
1042 | } | |
1043 | ||
1044 | create_mode: | |
b829e011 AJ |
1045 | if (cmdline_mode->cvt) |
1046 | mode = drm_cvt_mode(fb_helper_conn->connector->dev, | |
1047 | cmdline_mode->xres, cmdline_mode->yres, | |
1048 | cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60, | |
1049 | cmdline_mode->rb, cmdline_mode->interlace, | |
1050 | cmdline_mode->margins); | |
1051 | else | |
1052 | mode = drm_gtf_mode(fb_helper_conn->connector->dev, | |
1053 | cmdline_mode->xres, cmdline_mode->yres, | |
1054 | cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60, | |
1055 | cmdline_mode->interlace, | |
1056 | cmdline_mode->margins); | |
38651674 | 1057 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
0b4c0f3f | 1058 | list_add(&mode->head, &fb_helper_conn->connector->modes); |
38651674 DA |
1059 | return mode; |
1060 | } | |
1061 | ||
1062 | static bool drm_connector_enabled(struct drm_connector *connector, bool strict) | |
1063 | { | |
1064 | bool enable; | |
1065 | ||
1066 | if (strict) { | |
1067 | enable = connector->status == connector_status_connected; | |
1068 | } else { | |
1069 | enable = connector->status != connector_status_disconnected; | |
1070 | } | |
1071 | return enable; | |
1072 | } | |
1073 | ||
0b4c0f3f DA |
1074 | static void drm_enable_connectors(struct drm_fb_helper *fb_helper, |
1075 | bool *enabled) | |
38651674 DA |
1076 | { |
1077 | bool any_enabled = false; | |
1078 | struct drm_connector *connector; | |
1079 | int i = 0; | |
1080 | ||
0b4c0f3f DA |
1081 | for (i = 0; i < fb_helper->connector_count; i++) { |
1082 | connector = fb_helper->connector_info[i]->connector; | |
38651674 DA |
1083 | enabled[i] = drm_connector_enabled(connector, true); |
1084 | DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, | |
1085 | enabled[i] ? "yes" : "no"); | |
1086 | any_enabled |= enabled[i]; | |
38651674 DA |
1087 | } |
1088 | ||
1089 | if (any_enabled) | |
1090 | return; | |
1091 | ||
0b4c0f3f DA |
1092 | for (i = 0; i < fb_helper->connector_count; i++) { |
1093 | connector = fb_helper->connector_info[i]->connector; | |
38651674 | 1094 | enabled[i] = drm_connector_enabled(connector, false); |
38651674 DA |
1095 | } |
1096 | } | |
1097 | ||
1d42bbc8 DA |
1098 | static bool drm_target_cloned(struct drm_fb_helper *fb_helper, |
1099 | struct drm_display_mode **modes, | |
1100 | bool *enabled, int width, int height) | |
1101 | { | |
1102 | int count, i, j; | |
1103 | bool can_clone = false; | |
1104 | struct drm_fb_helper_connector *fb_helper_conn; | |
1105 | struct drm_display_mode *dmt_mode, *mode; | |
1106 | ||
1107 | /* only contemplate cloning in the single crtc case */ | |
1108 | if (fb_helper->crtc_count > 1) | |
1109 | return false; | |
1110 | ||
1111 | count = 0; | |
1112 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1113 | if (enabled[i]) | |
1114 | count++; | |
1115 | } | |
1116 | ||
1117 | /* only contemplate cloning if more than one connector is enabled */ | |
1118 | if (count <= 1) | |
1119 | return false; | |
1120 | ||
1121 | /* check the command line or if nothing common pick 1024x768 */ | |
1122 | can_clone = true; | |
1123 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1124 | if (!enabled[i]) | |
1125 | continue; | |
1126 | fb_helper_conn = fb_helper->connector_info[i]; | |
1127 | modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); | |
1128 | if (!modes[i]) { | |
1129 | can_clone = false; | |
1130 | break; | |
1131 | } | |
1132 | for (j = 0; j < i; j++) { | |
1133 | if (!enabled[j]) | |
1134 | continue; | |
1135 | if (!drm_mode_equal(modes[j], modes[i])) | |
1136 | can_clone = false; | |
1137 | } | |
1138 | } | |
1139 | ||
1140 | if (can_clone) { | |
1141 | DRM_DEBUG_KMS("can clone using command line\n"); | |
1142 | return true; | |
1143 | } | |
1144 | ||
1145 | /* try and find a 1024x768 mode on each connector */ | |
1146 | can_clone = true; | |
1147 | dmt_mode = drm_mode_find_dmt(fb_helper->dev, 1024, 768, 60); | |
1148 | ||
1149 | for (i = 0; i < fb_helper->connector_count; i++) { | |
1150 | ||
1151 | if (!enabled[i]) | |
1152 | continue; | |
1153 | ||
1154 | fb_helper_conn = fb_helper->connector_info[i]; | |
1155 | list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { | |
1156 | if (drm_mode_equal(mode, dmt_mode)) | |
1157 | modes[i] = mode; | |
1158 | } | |
1159 | if (!modes[i]) | |
1160 | can_clone = false; | |
1161 | } | |
1162 | ||
1163 | if (can_clone) { | |
1164 | DRM_DEBUG_KMS("can clone using 1024x768\n"); | |
1165 | return true; | |
1166 | } | |
1167 | DRM_INFO("kms: can't enable cloning when we probably wanted to.\n"); | |
1168 | return false; | |
1169 | } | |
1170 | ||
0b4c0f3f | 1171 | static bool drm_target_preferred(struct drm_fb_helper *fb_helper, |
38651674 DA |
1172 | struct drm_display_mode **modes, |
1173 | bool *enabled, int width, int height) | |
1174 | { | |
0b4c0f3f DA |
1175 | struct drm_fb_helper_connector *fb_helper_conn; |
1176 | int i; | |
38651674 | 1177 | |
0b4c0f3f DA |
1178 | for (i = 0; i < fb_helper->connector_count; i++) { |
1179 | fb_helper_conn = fb_helper->connector_info[i]; | |
38651674 | 1180 | |
0b4c0f3f | 1181 | if (enabled[i] == false) |
38651674 | 1182 | continue; |
38651674 DA |
1183 | |
1184 | DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n", | |
0b4c0f3f | 1185 | fb_helper_conn->connector->base.id); |
38651674 DA |
1186 | |
1187 | /* got for command line mode first */ | |
0b4c0f3f | 1188 | modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); |
38651674 DA |
1189 | if (!modes[i]) { |
1190 | DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", | |
0b4c0f3f DA |
1191 | fb_helper_conn->connector->base.id); |
1192 | modes[i] = drm_has_preferred_mode(fb_helper_conn, width, height); | |
38651674 DA |
1193 | } |
1194 | /* No preferred modes, pick one off the list */ | |
0b4c0f3f DA |
1195 | if (!modes[i] && !list_empty(&fb_helper_conn->connector->modes)) { |
1196 | list_for_each_entry(modes[i], &fb_helper_conn->connector->modes, head) | |
38651674 DA |
1197 | break; |
1198 | } | |
1199 | DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : | |
1200 | "none"); | |
38651674 DA |
1201 | } |
1202 | return true; | |
1203 | } | |
1204 | ||
8be48d92 DA |
1205 | static int drm_pick_crtcs(struct drm_fb_helper *fb_helper, |
1206 | struct drm_fb_helper_crtc **best_crtcs, | |
38651674 DA |
1207 | struct drm_display_mode **modes, |
1208 | int n, int width, int height) | |
1209 | { | |
1210 | int c, o; | |
8be48d92 | 1211 | struct drm_device *dev = fb_helper->dev; |
38651674 DA |
1212 | struct drm_connector *connector; |
1213 | struct drm_connector_helper_funcs *connector_funcs; | |
1214 | struct drm_encoder *encoder; | |
8be48d92 | 1215 | struct drm_fb_helper_crtc *best_crtc; |
38651674 | 1216 | int my_score, best_score, score; |
8be48d92 | 1217 | struct drm_fb_helper_crtc **crtcs, *crtc; |
0b4c0f3f | 1218 | struct drm_fb_helper_connector *fb_helper_conn; |
38651674 | 1219 | |
0b4c0f3f | 1220 | if (n == fb_helper->connector_count) |
38651674 | 1221 | return 0; |
0b4c0f3f DA |
1222 | |
1223 | fb_helper_conn = fb_helper->connector_info[n]; | |
1224 | connector = fb_helper_conn->connector; | |
38651674 DA |
1225 | |
1226 | best_crtcs[n] = NULL; | |
1227 | best_crtc = NULL; | |
8be48d92 | 1228 | best_score = drm_pick_crtcs(fb_helper, best_crtcs, modes, n+1, width, height); |
38651674 DA |
1229 | if (modes[n] == NULL) |
1230 | return best_score; | |
1231 | ||
8be48d92 DA |
1232 | crtcs = kzalloc(dev->mode_config.num_connector * |
1233 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); | |
38651674 DA |
1234 | if (!crtcs) |
1235 | return best_score; | |
1236 | ||
1237 | my_score = 1; | |
1238 | if (connector->status == connector_status_connected) | |
1239 | my_score++; | |
0b4c0f3f | 1240 | if (drm_has_cmdline_mode(fb_helper_conn)) |
38651674 | 1241 | my_score++; |
0b4c0f3f | 1242 | if (drm_has_preferred_mode(fb_helper_conn, width, height)) |
38651674 DA |
1243 | my_score++; |
1244 | ||
1245 | connector_funcs = connector->helper_private; | |
1246 | encoder = connector_funcs->best_encoder(connector); | |
1247 | if (!encoder) | |
1248 | goto out; | |
1249 | ||
38651674 DA |
1250 | /* select a crtc for this connector and then attempt to configure |
1251 | remaining connectors */ | |
8be48d92 DA |
1252 | for (c = 0; c < fb_helper->crtc_count; c++) { |
1253 | crtc = &fb_helper->crtc_info[c]; | |
38651674 DA |
1254 | |
1255 | if ((encoder->possible_crtcs & (1 << c)) == 0) { | |
38651674 DA |
1256 | continue; |
1257 | } | |
1258 | ||
1259 | for (o = 0; o < n; o++) | |
1260 | if (best_crtcs[o] == crtc) | |
1261 | break; | |
1262 | ||
1263 | if (o < n) { | |
1d42bbc8 DA |
1264 | /* ignore cloning unless only a single crtc */ |
1265 | if (fb_helper->crtc_count > 1) | |
1266 | continue; | |
1267 | ||
1268 | if (!drm_mode_equal(modes[o], modes[n])) | |
1269 | continue; | |
38651674 DA |
1270 | } |
1271 | ||
1272 | crtcs[n] = crtc; | |
8be48d92 DA |
1273 | memcpy(crtcs, best_crtcs, n * sizeof(struct drm_fb_helper_crtc *)); |
1274 | score = my_score + drm_pick_crtcs(fb_helper, crtcs, modes, n + 1, | |
38651674 DA |
1275 | width, height); |
1276 | if (score > best_score) { | |
1277 | best_crtc = crtc; | |
1278 | best_score = score; | |
1279 | memcpy(best_crtcs, crtcs, | |
1280 | dev->mode_config.num_connector * | |
8be48d92 | 1281 | sizeof(struct drm_fb_helper_crtc *)); |
38651674 | 1282 | } |
38651674 DA |
1283 | } |
1284 | out: | |
1285 | kfree(crtcs); | |
1286 | return best_score; | |
1287 | } | |
1288 | ||
8be48d92 | 1289 | static void drm_setup_crtcs(struct drm_fb_helper *fb_helper) |
38651674 | 1290 | { |
8be48d92 DA |
1291 | struct drm_device *dev = fb_helper->dev; |
1292 | struct drm_fb_helper_crtc **crtcs; | |
38651674 DA |
1293 | struct drm_display_mode **modes; |
1294 | struct drm_encoder *encoder; | |
8be48d92 | 1295 | struct drm_mode_set *modeset; |
38651674 DA |
1296 | bool *enabled; |
1297 | int width, height; | |
1298 | int i, ret; | |
1299 | ||
1300 | DRM_DEBUG_KMS("\n"); | |
1301 | ||
1302 | width = dev->mode_config.max_width; | |
1303 | height = dev->mode_config.max_height; | |
1304 | ||
1305 | /* clean out all the encoder/crtc combos */ | |
1306 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
1307 | encoder->crtc = NULL; | |
1308 | } | |
1309 | ||
1310 | crtcs = kcalloc(dev->mode_config.num_connector, | |
8be48d92 | 1311 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); |
38651674 DA |
1312 | modes = kcalloc(dev->mode_config.num_connector, |
1313 | sizeof(struct drm_display_mode *), GFP_KERNEL); | |
1314 | enabled = kcalloc(dev->mode_config.num_connector, | |
1315 | sizeof(bool), GFP_KERNEL); | |
1316 | ||
0b4c0f3f | 1317 | drm_enable_connectors(fb_helper, enabled); |
38651674 | 1318 | |
1d42bbc8 DA |
1319 | ret = drm_target_cloned(fb_helper, modes, enabled, width, height); |
1320 | if (!ret) { | |
1321 | ret = drm_target_preferred(fb_helper, modes, enabled, width, height); | |
1322 | if (!ret) | |
1323 | DRM_ERROR("Unable to find initial modes\n"); | |
1324 | } | |
38651674 DA |
1325 | |
1326 | DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height); | |
1327 | ||
8be48d92 DA |
1328 | drm_pick_crtcs(fb_helper, crtcs, modes, 0, width, height); |
1329 | ||
1330 | /* need to set the modesets up here for use later */ | |
1331 | /* fill out the connector<->crtc mappings into the modesets */ | |
1332 | for (i = 0; i < fb_helper->crtc_count; i++) { | |
1333 | modeset = &fb_helper->crtc_info[i].mode_set; | |
1334 | modeset->num_connectors = 0; | |
1335 | } | |
38651674 | 1336 | |
0b4c0f3f | 1337 | for (i = 0; i < fb_helper->connector_count; i++) { |
38651674 | 1338 | struct drm_display_mode *mode = modes[i]; |
8be48d92 DA |
1339 | struct drm_fb_helper_crtc *fb_crtc = crtcs[i]; |
1340 | modeset = &fb_crtc->mode_set; | |
38651674 | 1341 | |
8be48d92 | 1342 | if (mode && fb_crtc) { |
38651674 | 1343 | DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", |
8be48d92 DA |
1344 | mode->name, fb_crtc->mode_set.crtc->base.id); |
1345 | fb_crtc->desired_mode = mode; | |
1346 | if (modeset->mode) | |
1347 | drm_mode_destroy(dev, modeset->mode); | |
1348 | modeset->mode = drm_mode_duplicate(dev, | |
1349 | fb_crtc->desired_mode); | |
0b4c0f3f | 1350 | modeset->connectors[modeset->num_connectors++] = fb_helper->connector_info[i]->connector; |
38651674 | 1351 | } |
38651674 DA |
1352 | } |
1353 | ||
1354 | kfree(crtcs); | |
1355 | kfree(modes); | |
1356 | kfree(enabled); | |
1357 | } | |
1358 | ||
1359 | /** | |
1360 | * drm_helper_initial_config - setup a sane initial connector configuration | |
1361 | * @dev: DRM device | |
1362 | * | |
1363 | * LOCKING: | |
1364 | * Called at init time, must take mode config lock. | |
1365 | * | |
1366 | * Scan the CRTCs and connectors and try to put together an initial setup. | |
1367 | * At the moment, this is a cloned configuration across all heads with | |
1368 | * a new framebuffer object as the backing store. | |
1369 | * | |
1370 | * RETURNS: | |
1371 | * Zero if everything went ok, nonzero otherwise. | |
1372 | */ | |
4abe3520 | 1373 | bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel) |
38651674 | 1374 | { |
8be48d92 | 1375 | struct drm_device *dev = fb_helper->dev; |
38651674 DA |
1376 | int count = 0; |
1377 | ||
1378 | /* disable all the possible outputs/crtcs before entering KMS mode */ | |
8be48d92 | 1379 | drm_helper_disable_unused_functions(fb_helper->dev); |
38651674 | 1380 | |
0b4c0f3f | 1381 | drm_fb_helper_parse_command_line(fb_helper); |
38651674 | 1382 | |
0b4c0f3f DA |
1383 | count = drm_fb_helper_probe_connector_modes(fb_helper, |
1384 | dev->mode_config.max_width, | |
1385 | dev->mode_config.max_height); | |
38651674 DA |
1386 | /* |
1387 | * we shouldn't end up with no modes here. | |
1388 | */ | |
5c4426a7 | 1389 | if (count == 0) { |
eb1f8e4f | 1390 | printk(KERN_INFO "No connectors reported connected with modes\n"); |
5c4426a7 | 1391 | } |
8be48d92 | 1392 | drm_setup_crtcs(fb_helper); |
38651674 | 1393 | |
4abe3520 | 1394 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
38651674 | 1395 | } |
8be48d92 | 1396 | EXPORT_SYMBOL(drm_fb_helper_initial_config); |
38651674 | 1397 | |
eb1f8e4f | 1398 | bool drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper) |
38651674 | 1399 | { |
5c4426a7 | 1400 | int count = 0; |
4abe3520 | 1401 | u32 max_width, max_height, bpp_sel; |
4abe3520 DA |
1402 | bool bound = false, crtcs_bound = false; |
1403 | struct drm_crtc *crtc; | |
5c4426a7 | 1404 | |
eb1f8e4f DA |
1405 | if (!fb_helper->fb) |
1406 | return false; | |
4abe3520 | 1407 | |
4abe3520 DA |
1408 | list_for_each_entry(crtc, &fb_helper->dev->mode_config.crtc_list, head) { |
1409 | if (crtc->fb) | |
1410 | crtcs_bound = true; | |
1411 | if (crtc->fb == fb_helper->fb) | |
1412 | bound = true; | |
1413 | } | |
1414 | ||
eb1f8e4f | 1415 | if (!bound && crtcs_bound) { |
4abe3520 | 1416 | fb_helper->delayed_hotplug = true; |
eb1f8e4f | 1417 | return false; |
4abe3520 | 1418 | } |
eb1f8e4f | 1419 | DRM_DEBUG_KMS("\n"); |
4abe3520 | 1420 | |
eb1f8e4f DA |
1421 | max_width = fb_helper->fb->width; |
1422 | max_height = fb_helper->fb->height; | |
1423 | bpp_sel = fb_helper->fb->bits_per_pixel; | |
5c4426a7 | 1424 | |
eb1f8e4f DA |
1425 | count = drm_fb_helper_probe_connector_modes(fb_helper, max_width, |
1426 | max_height); | |
1427 | drm_setup_crtcs(fb_helper); | |
4abe3520 | 1428 | |
eb1f8e4f | 1429 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
5c4426a7 | 1430 | } |
eb1f8e4f | 1431 | EXPORT_SYMBOL(drm_fb_helper_hotplug_event); |
5c4426a7 | 1432 |