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 */ 30 31#include <sys/cdefs.h> 32__FBSDID("$FreeBSD$"); 33 34#include <dev/drm2/drmP.h> 35#include <dev/drm2/drm_crtc.h> 36#include <dev/drm2/drm_fb_helper.h> 37#include <dev/drm2/drm_crtc_helper.h> 38 39#if defined(__FreeBSD__) 40struct vt_kms_softc { 41 struct drm_fb_helper *fb_helper; 42 struct task fb_mode_task; 43}; 44 45static fb_enter_t vt_kms_postswitch; 46static void vt_restore_fbdev_mode(void *, int); 47 48/* Call restore out of vt(9) locks. */ 49static void 50vt_restore_fbdev_mode(void *arg, int pending) 51{ 52 struct drm_fb_helper *fb_helper; 53 struct vt_kms_softc *sc; 54 55 sc = (struct vt_kms_softc *)arg; 56 fb_helper = sc->fb_helper; 57 sx_xlock(&fb_helper->dev->mode_config.mutex); 58 drm_fb_helper_restore_fbdev_mode(fb_helper); 59 sx_xunlock(&fb_helper->dev->mode_config.mutex); 60} 61 62static int 63vt_kms_postswitch(void *arg) 64{ 65 struct vt_kms_softc *sc; 66 67 sc = (struct vt_kms_softc *)arg; 68 taskqueue_enqueue_fast(taskqueue_thread, &sc->fb_mode_task); 69 70 return (0); 71} 72#endif 73 74static DRM_LIST_HEAD(kernel_fb_helper_list); 75 76/* simple single crtc case helper function */ 77int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper) 78{ 79 struct drm_device *dev = fb_helper->dev; 80 struct drm_connector *connector; 81 82 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 83 struct drm_fb_helper_connector *fb_helper_connector; 84 85 fb_helper_connector = malloc( 86 sizeof(struct drm_fb_helper_connector), DRM_MEM_KMS, 87 M_WAITOK | M_ZERO); 88 89 fb_helper_connector->connector = connector; 90 fb_helper->connector_info[fb_helper->connector_count++] = fb_helper_connector; 91 } 92 return 0; 93} 94 95const char *fb_mode_option; 96 97/** 98 * drm_fb_helper_connector_parse_command_line - parse command line for connector 99 * @connector - connector to parse line for 100 * @mode_option - per connector mode option 101 * 102 * This parses the connector specific then generic command lines for 103 * modes and options to configure the connector. 104 * 105 * This uses the same parameters as the fb modedb.c, except for extra 106 * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m][eDd] 107 * 108 * enable/enable Digital/disable bit at the end 109 */ 110static bool drm_fb_helper_connector_parse_command_line(struct drm_fb_helper_connector *fb_helper_conn, 111 const char *mode_option) 112{ 113 const char *name; 114 unsigned int namelen; 115 int res_specified = 0, bpp_specified = 0, refresh_specified = 0; 116 unsigned int xres = 0, yres = 0, bpp = 32, refresh = 0; 117 int yres_specified = 0, cvt = 0, rb = 0, interlace = 0, margins = 0; 118 int i; 119 enum drm_connector_force force = DRM_FORCE_UNSPECIFIED; 120 struct drm_fb_helper_cmdline_mode *cmdline_mode; 121 struct drm_connector *connector; 122 123 if (!fb_helper_conn) 124 return false; 125 connector = fb_helper_conn->connector; 126 127 cmdline_mode = &fb_helper_conn->cmdline_mode; 128 if (!mode_option) 129 mode_option = fb_mode_option; 130 131 if (!mode_option) { 132 cmdline_mode->specified = false; 133 return false; 134 } 135 136 name = mode_option; 137 namelen = strlen(name); 138 for (i = namelen-1; i >= 0; i--) { 139 switch (name[i]) { 140 case '@': 141 namelen = i; 142 if (!refresh_specified && !bpp_specified && 143 !yres_specified) { 144 refresh = strtol(&name[i+1], NULL, 10); 145 refresh_specified = 1; 146 if (cvt || rb) 147 cvt = 0; 148 } else 149 goto done; 150 break; 151 case '-': 152 namelen = i; 153 if (!bpp_specified && !yres_specified) { 154 bpp = strtol(&name[i+1], NULL, 10); 155 bpp_specified = 1; 156 if (cvt || rb) 157 cvt = 0; 158 } else 159 goto done; 160 break; 161 case 'x': 162 if (!yres_specified) { 163 yres = strtol(&name[i+1], NULL, 10); 164 yres_specified = 1; 165 } else 166 goto done; 167 case '0' ... '9': 168 break; 169 case 'M': 170 if (!yres_specified) 171 cvt = 1; 172 break; 173 case 'R': 174 if (cvt) 175 rb = 1; 176 break; 177 case 'm': 178 if (!cvt) 179 margins = 1; 180 break; 181 case 'i': 182 if (!cvt) 183 interlace = 1; 184 break; 185 case 'e': 186 force = DRM_FORCE_ON; 187 break; 188 case 'D': 189 if ((connector->connector_type != DRM_MODE_CONNECTOR_DVII) && 190 (connector->connector_type != DRM_MODE_CONNECTOR_HDMIB)) 191 force = DRM_FORCE_ON; 192 else 193 force = DRM_FORCE_ON_DIGITAL; 194 break; 195 case 'd': 196 force = DRM_FORCE_OFF; 197 break; 198 default: 199 goto done; 200 } 201 } 202 if (i < 0 && yres_specified) { 203 xres = strtol(name, NULL, 10); 204 res_specified = 1; 205 } 206done: 207 208 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n", 209 drm_get_connector_name(connector), xres, yres, 210 (refresh) ? refresh : 60, (rb) ? " reduced blanking" : 211 "", (margins) ? " with margins" : "", (interlace) ? 212 " interlaced" : ""); 213 214 if (force) { 215 const char *s; 216 switch (force) { 217 case DRM_FORCE_OFF: s = "OFF"; break; 218 case DRM_FORCE_ON_DIGITAL: s = "ON - dig"; break; 219 default: 220 case DRM_FORCE_ON: s = "ON"; break; 221 } 222 223 DRM_INFO("forcing %s connector %s\n", 224 drm_get_connector_name(connector), s); 225 connector->force = force; 226 } 227 228 if (res_specified) { 229 cmdline_mode->specified = true; 230 cmdline_mode->xres = xres; 231 cmdline_mode->yres = yres; 232 } 233 234 if (refresh_specified) { 235 cmdline_mode->refresh_specified = true; 236 cmdline_mode->refresh = refresh; 237 } 238 239 if (bpp_specified) { 240 cmdline_mode->bpp_specified = true; 241 cmdline_mode->bpp = bpp; 242 } 243 cmdline_mode->rb = rb ? true : false; 244 cmdline_mode->cvt = cvt ? true : false; 245 cmdline_mode->interlace = interlace ? true : false; 246 247 return true; 248} 249 250static int 251fb_get_options(const char *connector_name, char **option) 252{ 253 254 /* 255 * TODO: store mode options pointer in ${option} for connector with 256 * name ${connector_name} 257 */ 258 return (1); 259} 260 261static int drm_fb_helper_parse_command_line(struct drm_fb_helper *fb_helper) 262{ 263 struct drm_fb_helper_connector *fb_helper_conn; 264 int i; 265 266 for (i = 0; i < fb_helper->connector_count; i++) { 267 char *option = NULL; 268 269 fb_helper_conn = fb_helper->connector_info[i]; 270 271 /* do something on return - turn off connector maybe */ 272 if (fb_get_options(drm_get_connector_name(fb_helper_conn->connector), &option)) 273 continue; 274 275 drm_fb_helper_connector_parse_command_line(fb_helper_conn, option); 276 } 277 return 0; 278} 279 280#if 0 281static void drm_fb_helper_save_lut_atomic(struct drm_crtc *crtc, struct drm_fb_helper *helper) 282{ 283 uint16_t *r_base, *g_base, *b_base; 284 int i; 285 286 r_base = crtc->gamma_store; 287 g_base = r_base + crtc->gamma_size; 288 b_base = g_base + crtc->gamma_size; 289 290 for (i = 0; i < crtc->gamma_size; i++) 291 helper->funcs->gamma_get(crtc, &r_base[i], &g_base[i], &b_base[i], i); 292} 293 294static void drm_fb_helper_restore_lut_atomic(struct drm_crtc *crtc) 295{ 296 uint16_t *r_base, *g_base, *b_base; 297 298 r_base = crtc->gamma_store; 299 g_base = r_base + crtc->gamma_size; 300 b_base = g_base + crtc->gamma_size; 301 302 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size); 303} 304#endif 305 306#if 0 307int drm_fb_helper_debug_enter(struct fb_info *info) 308{ 309 struct drm_fb_helper *helper = info->par; 310 struct drm_crtc_helper_funcs *funcs; 311 int i; 312 313 if (list_empty(&kernel_fb_helper_list)) 314 return false; 315 316 list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { 317 for (i = 0; i < helper->crtc_count; i++) { 318 struct drm_mode_set *mode_set = 319 &helper->crtc_info[i].mode_set; 320 321 if (!mode_set->crtc->enabled) 322 continue; 323 324 funcs = mode_set->crtc->helper_private; 325 drm_fb_helper_save_lut_atomic(mode_set->crtc, helper); 326 funcs->mode_set_base_atomic(mode_set->crtc, 327 mode_set->fb, 328 mode_set->x, 329 mode_set->y, 330 ENTER_ATOMIC_MODE_SET); 331 } 332 } 333 334 return 0; 335} 336#endif 337 338#if 0 339/* Find the real fb for a given fb helper CRTC */ 340static struct drm_framebuffer *drm_mode_config_fb(struct drm_crtc *crtc) 341{ 342 struct drm_device *dev = crtc->dev; 343 struct drm_crtc *c; 344 345 list_for_each_entry(c, &dev->mode_config.crtc_list, head) { 346 if (crtc->base.id == c->base.id) 347 return c->fb; 348 } 349 350 return NULL; 351} 352#endif 353 354#if 0 355int drm_fb_helper_debug_leave(struct fb_info *info) 356{ 357 struct drm_fb_helper *helper = info->par; 358 struct drm_crtc *crtc; 359 struct drm_crtc_helper_funcs *funcs; 360 struct drm_framebuffer *fb; 361 int i; 362 363 for (i = 0; i < helper->crtc_count; i++) { 364 struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set; 365 crtc = mode_set->crtc; 366 funcs = crtc->helper_private; 367 fb = drm_mode_config_fb(crtc); 368 369 if (!crtc->enabled) 370 continue; 371 372 if (!fb) { 373 DRM_ERROR("no fb to restore??\n"); 374 continue; 375 } 376 377 drm_fb_helper_restore_lut_atomic(mode_set->crtc); 378 funcs->mode_set_base_atomic(mode_set->crtc, fb, crtc->x, 379 crtc->y, LEAVE_ATOMIC_MODE_SET); 380 } 381 382 return 0; 383} 384#endif 385 386bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper) 387{ 388 bool error = false; 389 int i, ret; 390 for (i = 0; i < fb_helper->crtc_count; i++) { 391 struct drm_mode_set *mode_set = &fb_helper->crtc_info[i].mode_set; 392 ret = drm_crtc_helper_set_config(mode_set); 393 if (ret) 394 error = true; 395 } 396 return error; 397} 398 399#if 0 400bool drm_fb_helper_force_kernel_mode(void) 401{ 402 bool ret, error = false; 403 struct drm_fb_helper *helper; 404 405 if (list_empty(&kernel_fb_helper_list)) 406 return false; 407 408 list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { 409 if (helper->dev->switch_power_state == DRM_SWITCH_POWER_OFF) 410 continue; 411 412 ret = drm_fb_helper_restore_fbdev_mode(helper); 413 if (ret) 414 error = true; 415 } 416 return error; 417} 418#endif 419 420#if 0 421int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed, 422 void *panic_str) 423{ 424 printf("panic occurred, switching back to text console\n"); 425 return drm_fb_helper_force_kernel_mode(); 426 return 0; 427} 428 429static struct notifier_block paniced = { 430 .notifier_call = drm_fb_helper_panic, 431}; 432 433/** 434 * drm_fb_helper_restore - restore the framebuffer console (kernel) config 435 * 436 * Restore's the kernel's fbcon mode, used for lastclose & panic paths. 437 */ 438void drm_fb_helper_restore(void) 439{ 440 bool ret; 441 ret = drm_fb_helper_force_kernel_mode(); 442 if (ret == true) 443 DRM_ERROR("Failed to restore crtc configuration\n"); 444} 445 446#ifdef CONFIG_MAGIC_SYSRQ 447static void drm_fb_helper_restore_work_fn(struct work_struct *ignored) 448{ 449 drm_fb_helper_restore(); 450} 451static DECLARE_WORK(drm_fb_helper_restore_work, drm_fb_helper_restore_work_fn); 452 453static void drm_fb_helper_sysrq(int dummy1) 454{ 455 schedule_work(&drm_fb_helper_restore_work); 456} 457 458static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { 459 .handler = drm_fb_helper_sysrq, 460 .help_msg = "force-fb(V)", 461 .action_msg = "Restore framebuffer console", 462}; 463#else 464static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { }; 465#endif 466#endif 467 468#if 0 469static void drm_fb_helper_on(struct fb_info *info) 470{ 471 struct drm_fb_helper *fb_helper = info->par; 472 struct drm_device *dev = fb_helper->dev; 473 struct drm_crtc *crtc; 474 struct drm_crtc_helper_funcs *crtc_funcs; 475 struct drm_connector *connector; 476 struct drm_encoder *encoder; 477 int i, j; 478 479 /* 480 * For each CRTC in this fb, turn the crtc on then, 481 * find all associated encoders and turn them on. 482 */ 483 sx_xlock(&dev->mode_config.mutex); 484 for (i = 0; i < fb_helper->crtc_count; i++) { 485 crtc = fb_helper->crtc_info[i].mode_set.crtc; 486 crtc_funcs = crtc->helper_private; 487 488 if (!crtc->enabled) 489 continue; 490 491 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); 492 493 /* Walk the connectors & encoders on this fb turning them on */ 494 for (j = 0; j < fb_helper->connector_count; j++) { 495 connector = fb_helper->connector_info[j]->connector; 496 connector->dpms = DRM_MODE_DPMS_ON; 497 drm_connector_property_set_value(connector, 498 dev->mode_config.dpms_property, 499 DRM_MODE_DPMS_ON); 500 } 501 /* Found a CRTC on this fb, now find encoders */ 502 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 503 if (encoder->crtc == crtc) { 504 struct drm_encoder_helper_funcs *encoder_funcs; 505 506 encoder_funcs = encoder->helper_private; 507 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); 508 } 509 } 510 } 511 sx_xunlock(&dev->mode_config.mutex); 512} 513#endif 514 515#if 0 516static void drm_fb_helper_off(struct fb_info *info, int dpms_mode) 517{ 518 struct drm_fb_helper *fb_helper = info->par; 519 struct drm_device *dev = fb_helper->dev; 520 struct drm_crtc *crtc; 521 struct drm_crtc_helper_funcs *crtc_funcs; 522 struct drm_connector *connector; 523 struct drm_encoder *encoder; 524 int i, j; 525 526 /* 527 * For each CRTC in this fb, find all associated encoders 528 * and turn them off, then turn off the CRTC. 529 */ 530 sx_xlock(&dev->mode_config.mutex); 531 for (i = 0; i < fb_helper->crtc_count; i++) { 532 crtc = fb_helper->crtc_info[i].mode_set.crtc; 533 crtc_funcs = crtc->helper_private; 534 535 if (!crtc->enabled) 536 continue; 537 538 /* Walk the connectors on this fb and mark them off */ 539 for (j = 0; j < fb_helper->connector_count; j++) { 540 connector = fb_helper->connector_info[j]->connector; 541 connector->dpms = dpms_mode; 542 drm_connector_property_set_value(connector, 543 dev->mode_config.dpms_property, 544 dpms_mode); 545 } 546 /* Found a CRTC on this fb, now find encoders */ 547 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 548 if (encoder->crtc == crtc) { 549 struct drm_encoder_helper_funcs *encoder_funcs; 550 551 encoder_funcs = encoder->helper_private; 552 encoder_funcs->dpms(encoder, dpms_mode); 553 } 554 } 555 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF); 556 } 557 sx_xunlock(&dev->mode_config.mutex); 558} 559#endif 560 561#if 0 562int drm_fb_helper_blank(int blank, struct fb_info *info) 563{ 564 switch (blank) { 565 /* Display: On; HSync: On, VSync: On */ 566 case FB_BLANK_UNBLANK: 567 drm_fb_helper_on(info); 568 break; 569 /* Display: Off; HSync: On, VSync: On */ 570 case FB_BLANK_NORMAL: 571 drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); 572 break; 573 /* Display: Off; HSync: Off, VSync: On */ 574 case FB_BLANK_HSYNC_SUSPEND: 575 drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); 576 break; 577 /* Display: Off; HSync: On, VSync: Off */ 578 case FB_BLANK_VSYNC_SUSPEND: 579 drm_fb_helper_off(info, DRM_MODE_DPMS_SUSPEND); 580 break; 581 /* Display: Off; HSync: Off, VSync: Off */ 582 case FB_BLANK_POWERDOWN: 583 drm_fb_helper_off(info, DRM_MODE_DPMS_OFF); 584 break; 585 } 586 return 0; 587} 588#endif 589 590static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) 591{ 592 int i; 593 594 for (i = 0; i < helper->connector_count; i++) 595 free(helper->connector_info[i], DRM_MEM_KMS); 596 free(helper->connector_info, DRM_MEM_KMS); 597 for (i = 0; i < helper->crtc_count; i++) { 598 free(helper->crtc_info[i].mode_set.connectors, DRM_MEM_KMS); 599 if (helper->crtc_info[i].mode_set.mode) 600 drm_mode_destroy(helper->dev, helper->crtc_info[i].mode_set.mode); 601 } 602 free(helper->crtc_info, DRM_MEM_KMS); 603} 604 605int drm_fb_helper_init(struct drm_device *dev, 606 struct drm_fb_helper *fb_helper, 607 int crtc_count, int max_conn_count) 608{ 609 struct drm_crtc *crtc; 610 int i; 611 612 fb_helper->dev = dev; 613 614 INIT_LIST_HEAD(&fb_helper->kernel_fb_list); 615 616 fb_helper->crtc_info = malloc(crtc_count * 617 sizeof(struct drm_fb_helper_crtc), DRM_MEM_KMS, M_WAITOK | M_ZERO); 618 619 fb_helper->crtc_count = crtc_count; 620 fb_helper->connector_info = malloc(dev->mode_config.num_connector * 621 sizeof(struct drm_fb_helper_connector *), DRM_MEM_KMS, 622 M_WAITOK | M_ZERO); 623 fb_helper->connector_count = 0; 624 625 for (i = 0; i < crtc_count; i++) { 626 fb_helper->crtc_info[i].mode_set.connectors = 627 malloc(max_conn_count * sizeof(struct drm_connector *), 628 DRM_MEM_KMS, M_WAITOK | M_ZERO); 629 630 fb_helper->crtc_info[i].mode_set.num_connectors = 0; 631 } 632 633 i = 0; 634 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { 635 fb_helper->crtc_info[i].crtc_id = crtc->base.id; 636 fb_helper->crtc_info[i].mode_set.crtc = crtc; 637 i++; 638 } 639 fb_helper->conn_limit = max_conn_count; 640 return 0; 641} 642 643void drm_fb_helper_fini(struct drm_fb_helper *fb_helper) 644{ 645 if (!list_empty(&fb_helper->kernel_fb_list)) { 646 list_del(&fb_helper->kernel_fb_list); 647 if (list_empty(&kernel_fb_helper_list)) { 648#if 0 649 printk(KERN_INFO "drm: unregistered panic notifier\n"); 650 atomic_notifier_chain_unregister(&panic_notifier_list, 651 &paniced); 652 unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); 653#endif 654 } 655 } 656 657 drm_fb_helper_crtc_free(fb_helper); 658 659} 660 661#if 0 662static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, 663 u16 blue, u16 regno, struct fb_info *info) 664{ 665 struct drm_fb_helper *fb_helper = info->par; 666 struct drm_framebuffer *fb = fb_helper->fb; 667 int pindex; 668 669 if (info->fix.visual == FB_VISUAL_trueCOLOR) { 670 u32 *palette; 671 u32 value; 672 /* place color in psuedopalette */ 673 if (regno > 16) 674 return -EINVAL; 675 palette = (u32 *)info->pseudo_palette; 676 red >>= (16 - info->var.red.length); 677 green >>= (16 - info->var.green.length); 678 blue >>= (16 - info->var.blue.length); 679 value = (red << info->var.red.offset) | 680 (green << info->var.green.offset) | 681 (blue << info->var.blue.offset); 682 if (info->var.transp.length > 0) { 683 u32 mask = (1 << info->var.transp.length) - 1; 684 mask <<= info->var.transp.offset; 685 value |= mask; 686 } 687 palette[regno] = value; 688 return 0; 689 } 690 691 pindex = regno; 692 693 if (fb->bits_per_pixel == 16) { 694 pindex = regno << 3; 695 696 if (fb->depth == 16 && regno > 63) 697 return -EINVAL; 698 if (fb->depth == 15 && regno > 31) 699 return -EINVAL; 700 701 if (fb->depth == 16) { 702 u16 r, g, b; 703 int i; 704 if (regno < 32) { 705 for (i = 0; i < 8; i++) 706 fb_helper->funcs->gamma_set(crtc, red, 707 green, blue, pindex + i); 708 } 709 710 fb_helper->funcs->gamma_get(crtc, &r, 711 &g, &b, 712 pindex >> 1); 713 714 for (i = 0; i < 4; i++) 715 fb_helper->funcs->gamma_set(crtc, r, 716 green, b, 717 (pindex >> 1) + i); 718 } 719 } 720 721 if (fb->depth != 16) 722 fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex); 723 return 0; 724} 725#endif 726 727#if 0 728int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) 729{ 730 struct drm_fb_helper *fb_helper = info->par; 731 struct drm_crtc_helper_funcs *crtc_funcs; 732 u16 *red, *green, *blue, *transp; 733 struct drm_crtc *crtc; 734 int i, j, rc = 0; 735 int start; 736 737 for (i = 0; i < fb_helper->crtc_count; i++) { 738 crtc = fb_helper->crtc_info[i].mode_set.crtc; 739 crtc_funcs = crtc->helper_private; 740 741 red = cmap->red; 742 green = cmap->green; 743 blue = cmap->blue; 744 transp = cmap->transp; 745 start = cmap->start; 746 747 for (j = 0; j < cmap->len; j++) { 748 u16 hred, hgreen, hblue, htransp = 0xffff; 749 750 hred = *red++; 751 hgreen = *green++; 752 hblue = *blue++; 753 754 if (transp) 755 htransp = *transp++; 756 757 rc = setcolreg(crtc, hred, hgreen, hblue, start++, info); 758 if (rc) 759 return rc; 760 } 761 crtc_funcs->load_lut(crtc); 762 } 763 return rc; 764} 765#endif 766 767#if 0 768int drm_fb_helper_check_var(struct fb_var_screeninfo *var, 769 struct fb_info *info) 770{ 771 struct drm_fb_helper *fb_helper = info->par; 772 struct drm_framebuffer *fb = fb_helper->fb; 773 int depth; 774 775 if (var->pixclock != 0 || in_dbg_master()) 776 return -EINVAL; 777 778 /* Need to resize the fb object !!! */ 779 if (var->bits_per_pixel > fb->bits_per_pixel || 780 var->xres > fb->width || var->yres > fb->height || 781 var->xres_virtual > fb->width || var->yres_virtual > fb->height) { 782 DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb " 783 "request %dx%d-%d (virtual %dx%d) > %dx%d-%d\n", 784 var->xres, var->yres, var->bits_per_pixel, 785 var->xres_virtual, var->yres_virtual, 786 fb->width, fb->height, fb->bits_per_pixel); 787 return -EINVAL; 788 } 789 790 switch (var->bits_per_pixel) { 791 case 16: 792 depth = (var->green.length == 6) ? 16 : 15; 793 break; 794 case 32: 795 depth = (var->transp.length > 0) ? 32 : 24; 796 break; 797 default: 798 depth = var->bits_per_pixel; 799 break; 800 } 801 802 switch (depth) { 803 case 8: 804 var->red.offset = 0; 805 var->green.offset = 0; 806 var->blue.offset = 0; 807 var->red.length = 8; 808 var->green.length = 8; 809 var->blue.length = 8; 810 var->transp.length = 0; 811 var->transp.offset = 0; 812 break; 813 case 15: 814 var->red.offset = 10; 815 var->green.offset = 5; 816 var->blue.offset = 0; 817 var->red.length = 5; 818 var->green.length = 5; 819 var->blue.length = 5; 820 var->transp.length = 1; 821 var->transp.offset = 15; 822 break; 823 case 16: 824 var->red.offset = 11; 825 var->green.offset = 5; 826 var->blue.offset = 0; 827 var->red.length = 5; 828 var->green.length = 6; 829 var->blue.length = 5; 830 var->transp.length = 0; 831 var->transp.offset = 0; 832 break; 833 case 24: 834 var->red.offset = 16; 835 var->green.offset = 8; 836 var->blue.offset = 0; 837 var->red.length = 8; 838 var->green.length = 8; 839 var->blue.length = 8; 840 var->transp.length = 0; 841 var->transp.offset = 0; 842 break; 843 case 32: 844 var->red.offset = 16; 845 var->green.offset = 8; 846 var->blue.offset = 0; 847 var->red.length = 8; 848 var->green.length = 8; 849 var->blue.length = 8; 850 var->transp.length = 8; 851 var->transp.offset = 24; 852 break; 853 default: 854 return -EINVAL; 855 } 856 return 0; 857} 858#endif 859 860#if 0 861/* this will let fbcon do the mode init */ 862int drm_fb_helper_set_par(struct fb_info *info) 863{ 864 struct drm_fb_helper *fb_helper = info->par; 865 struct drm_device *dev = fb_helper->dev; 866 struct fb_var_screeninfo *var = &info->var; 867 struct drm_crtc *crtc; 868 int ret; 869 int i; 870 871 if (var->pixclock != 0) { 872 DRM_ERROR("PIXEL CLOCK SET\n"); 873 return -EINVAL; 874 } 875 876 mutex_lock(&dev->mode_config.mutex); 877 for (i = 0; i < fb_helper->crtc_count; i++) { 878 crtc = fb_helper->crtc_info[i].mode_set.crtc; 879 ret = crtc->funcs->set_config(&fb_helper->crtc_info[i].mode_set); 880 if (ret) { 881 mutex_unlock(&dev->mode_config.mutex); 882 return ret; 883 } 884 } 885 mutex_unlock(&dev->mode_config.mutex); 886 887 if (fb_helper->delayed_hotplug) { 888 fb_helper->delayed_hotplug = false; 889 drm_fb_helper_hotplug_event(fb_helper); 890 } 891 return 0; 892} 893#endif 894 895#if 0 896int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, 897 struct fb_info *info) 898{ 899 struct drm_fb_helper *fb_helper = info->par; 900 struct drm_device *dev = fb_helper->dev; 901 struct drm_mode_set *modeset; 902 struct drm_crtc *crtc; 903 int ret = 0; 904 int i; 905 906 mutex_lock(&dev->mode_config.mutex); 907 for (i = 0; i < fb_helper->crtc_count; i++) { 908 crtc = fb_helper->crtc_info[i].mode_set.crtc; 909 910 modeset = &fb_helper->crtc_info[i].mode_set; 911 912 modeset->x = var->xoffset; 913 modeset->y = var->yoffset; 914 915 if (modeset->num_connectors) { 916 ret = crtc->funcs->set_config(modeset); 917 if (!ret) { 918 info->var.xoffset = var->xoffset; 919 info->var.yoffset = var->yoffset; 920 } 921 } 922 } 923 mutex_unlock(&dev->mode_config.mutex); 924 return ret; 925} 926#endif 927 928int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, 929 int preferred_bpp) 930{ 931 int new_fb = 0; 932 int crtc_count = 0; 933 int i; 934 struct fb_info *info; 935 struct drm_fb_helper_surface_size sizes; 936 int gamma_size = 0; 937#if defined(__FreeBSD__) 938 struct vt_kms_softc *sc; 939 device_t kdev; 940#endif 941 942 memset(&sizes, 0, sizeof(struct drm_fb_helper_surface_size)); 943 sizes.surface_depth = 24; 944 sizes.surface_bpp = 32; 945 sizes.fb_width = (unsigned)-1; 946 sizes.fb_height = (unsigned)-1; 947 948 /* if driver picks 8 or 16 by default use that 949 for both depth/bpp */ 950 if (preferred_bpp != sizes.surface_bpp) { 951 sizes.surface_depth = sizes.surface_bpp = preferred_bpp; 952 } 953 /* first up get a count of crtcs now in use and new min/maxes width/heights */ 954 for (i = 0; i < fb_helper->connector_count; i++) { 955 struct drm_fb_helper_connector *fb_helper_conn = fb_helper->connector_info[i]; 956 struct drm_fb_helper_cmdline_mode *cmdline_mode; 957 958 cmdline_mode = &fb_helper_conn->cmdline_mode; 959 960 if (cmdline_mode->bpp_specified) { 961 switch (cmdline_mode->bpp) { 962 case 8: 963 sizes.surface_depth = sizes.surface_bpp = 8; 964 break; 965 case 15: 966 sizes.surface_depth = 15; 967 sizes.surface_bpp = 16; 968 break; 969 case 16: 970 sizes.surface_depth = sizes.surface_bpp = 16; 971 break; 972 case 24: 973 sizes.surface_depth = sizes.surface_bpp = 24; 974 break; 975 case 32: 976 sizes.surface_depth = 24; 977 sizes.surface_bpp = 32; 978 break; 979 } 980 break; 981 } 982 } 983 984 crtc_count = 0; 985 for (i = 0; i < fb_helper->crtc_count; i++) { 986 struct drm_display_mode *desired_mode; 987 desired_mode = fb_helper->crtc_info[i].desired_mode; 988 989 if (desired_mode) { 990 if (gamma_size == 0) 991 gamma_size = fb_helper->crtc_info[i].mode_set.crtc->gamma_size; 992 if (desired_mode->hdisplay < sizes.fb_width) 993 sizes.fb_width = desired_mode->hdisplay; 994 if (desired_mode->vdisplay < sizes.fb_height) 995 sizes.fb_height = desired_mode->vdisplay; 996 if (desired_mode->hdisplay > sizes.surface_width) 997 sizes.surface_width = desired_mode->hdisplay; 998 if (desired_mode->vdisplay > sizes.surface_height) 999 sizes.surface_height = desired_mode->vdisplay; 1000 crtc_count++; 1001 } 1002 } 1003 1004 if (crtc_count == 0 || sizes.fb_width == -1 || sizes.fb_height == -1) { 1005 /* hmm everyone went away - assume VGA cable just fell out 1006 and will come back later. */ 1007 DRM_INFO("Cannot find any crtc or sizes - going 1024x768\n"); 1008 sizes.fb_width = sizes.surface_width = 1024; 1009 sizes.fb_height = sizes.surface_height = 768; 1010 } 1011 1012 /* push down into drivers */ 1013 new_fb = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes); 1014 if (new_fb < 0) 1015 return new_fb; 1016 1017#if defined(__FreeBSD__) 1018 sc = malloc(sizeof(struct vt_kms_softc), DRM_MEM_KMS, 1019 M_WAITOK | M_ZERO); 1020 sc->fb_helper = fb_helper; 1021 TASK_INIT(&sc->fb_mode_task, 0, vt_restore_fbdev_mode, sc); 1022 1023 info = fb_helper->fbdev; 1024 1025 info->fb_name = device_get_nameunit(fb_helper->dev->device); 1026 info->fb_depth = fb_helper->fb->bits_per_pixel; 1027 info->fb_height = fb_helper->fb->height; 1028 info->fb_width = fb_helper->fb->width; 1029 info->fb_stride = fb_helper->fb->pitches[0]; 1030 info->fb_priv = sc; 1031 info->enter = &vt_kms_postswitch; 1032#endif 1033 1034 /* set the fb pointer */ 1035 for (i = 0; i < fb_helper->crtc_count; i++) { 1036 fb_helper->crtc_info[i].mode_set.fb = fb_helper->fb; 1037 } 1038 1039#if defined(__FreeBSD__) 1040 if (new_fb) { 1041 device_t fbd; 1042 int ret; 1043 1044 kdev = fb_helper->dev->device; 1045 fbd = device_add_child(kdev, "fbd", device_get_unit(kdev)); 1046 if (fbd != NULL) 1047 ret = device_probe_and_attach(fbd); 1048 else 1049 ret = ENODEV; 1050#ifdef DEV_VT 1051 if (ret != 0) 1052 DRM_ERROR("Failed to attach fbd device: %d\n", ret); 1053#endif 1054 } 1055#else 1056 if (new_fb) { 1057 info->var.pixclock = 0; 1058 if (register_framebuffer(info) < 0) { 1059 return -EINVAL; 1060 } 1061 1062 printf("fb%d: %s frame buffer device\n", info->node, 1063 info->fix.id); 1064 1065 } else { 1066 drm_fb_helper_set_par(info); 1067 } 1068 1069 /* Switch back to kernel console on panic */ 1070 /* multi card linked list maybe */ 1071 if (list_empty(&kernel_fb_helper_list)) { 1072 printf("drm: registered panic notifier\n"); 1073 atomic_notifier_chain_register(&panic_notifier_list, 1074 &paniced); 1075 } 1076 if (new_fb) 1077 list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list); 1078#endif 1079 return 0; 1080} 1081 1082#if 0 1083void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, 1084 uint32_t depth) 1085{ 1086 info->fix.type = FB_TYPE_PACKED_PIXELS; 1087 info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR : 1088 FB_VISUAL_trueCOLOR; 1089 info->fix.mmio_start = 0; 1090 info->fix.mmio_len = 0; 1091 info->fix.type_aux = 0; 1092 info->fix.xpanstep = 1; /* doing it in hw */ 1093 info->fix.ypanstep = 1; /* doing it in hw */ 1094 info->fix.ywrapstep = 0; 1095 info->fix.accel = FB_ACCEL_NONE; 1096 info->fix.type_aux = 0; 1097 1098 info->fix.line_length = pitch; 1099 return; 1100} 1101 1102void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, 1103 uint32_t fb_width, uint32_t fb_height) 1104{ 1105 struct drm_framebuffer *fb = fb_helper->fb; 1106 info->pseudo_palette = fb_helper->pseudo_palette; 1107 info->var.xres_virtual = fb->width; 1108 info->var.yres_virtual = fb->height; 1109 info->var.bits_per_pixel = fb->bits_per_pixel; 1110 info->var.accel_flags = FB_ACCELF_TEXT; 1111 info->var.xoffset = 0; 1112 info->var.yoffset = 0; 1113 info->var.activate = FB_ACTIVATE_NOW; 1114 info->var.height = -1; 1115 info->var.width = -1; 1116 1117 switch (fb->depth) { 1118 case 8: 1119 info->var.red.offset = 0; 1120 info->var.green.offset = 0; 1121 info->var.blue.offset = 0; 1122 info->var.red.length = 8; /* 8bit DAC */ 1123 info->var.green.length = 8; 1124 info->var.blue.length = 8; 1125 info->var.transp.offset = 0; 1126 info->var.transp.length = 0; 1127 break; 1128 case 15: 1129 info->var.red.offset = 10; 1130 info->var.green.offset = 5; 1131 info->var.blue.offset = 0; 1132 info->var.red.length = 5; 1133 info->var.green.length = 5; 1134 info->var.blue.length = 5; 1135 info->var.transp.offset = 15; 1136 info->var.transp.length = 1; 1137 break; 1138 case 16: 1139 info->var.red.offset = 11; 1140 info->var.green.offset = 5; 1141 info->var.blue.offset = 0; 1142 info->var.red.length = 5; 1143 info->var.green.length = 6; 1144 info->var.blue.length = 5; 1145 info->var.transp.offset = 0; 1146 break; 1147 case 24: 1148 info->var.red.offset = 16; 1149 info->var.green.offset = 8; 1150 info->var.blue.offset = 0; 1151 info->var.red.length = 8; 1152 info->var.green.length = 8; 1153 info->var.blue.length = 8; 1154 info->var.transp.offset = 0; 1155 info->var.transp.length = 0; 1156 break; 1157 case 32: 1158 info->var.red.offset = 16; 1159 info->var.green.offset = 8; 1160 info->var.blue.offset = 0; 1161 info->var.red.length = 8; 1162 info->var.green.length = 8; 1163 info->var.blue.length = 8; 1164 info->var.transp.offset = 24; 1165 info->var.transp.length = 8; 1166 break; 1167 default: 1168 break; 1169 } 1170 1171 info->var.xres = fb_width; 1172 info->var.yres = fb_height; 1173} 1174#endif 1175 1176static int drm_fb_helper_probe_connector_modes(struct drm_fb_helper *fb_helper, 1177 uint32_t maxX, 1178 uint32_t maxY) 1179{ 1180 struct drm_connector *connector; 1181 int count = 0; 1182 int i; 1183 1184 for (i = 0; i < fb_helper->connector_count; i++) { 1185 connector = fb_helper->connector_info[i]->connector; 1186 count += connector->funcs->fill_modes(connector, maxX, maxY); 1187 } 1188 1189 return count; 1190} 1191 1192static struct drm_display_mode *drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, int width, int height) 1193{ 1194 struct drm_display_mode *mode; 1195 1196 list_for_each_entry(mode, &fb_connector->connector->modes, head) { 1197 if (drm_mode_width(mode) > width || 1198 drm_mode_height(mode) > height) 1199 continue; 1200 if (mode->type & DRM_MODE_TYPE_PREFERRED) 1201 return mode; 1202 } 1203 return NULL; 1204} 1205 1206static bool drm_has_cmdline_mode(struct drm_fb_helper_connector *fb_connector) 1207{ 1208 struct drm_fb_helper_cmdline_mode *cmdline_mode; 1209 cmdline_mode = &fb_connector->cmdline_mode; 1210 return cmdline_mode->specified; 1211} 1212 1213static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn, 1214 int width, int height) 1215{ 1216 struct drm_cmdline_mode *cmdline_mode; 1217 struct drm_display_mode *mode = NULL; 1218 1219 cmdline_mode = &fb_helper_conn->cmdline_mode1; 1220 if (cmdline_mode->specified == false && 1221 !drm_fetch_cmdline_mode_from_kenv(fb_helper_conn->connector, 1222 cmdline_mode)) 1223 return (NULL); 1224 1225 /* attempt to find a matching mode in the list of modes 1226 * we have gotten so far, if not add a CVT mode that conforms 1227 */ 1228 if (cmdline_mode->rb || cmdline_mode->margins) 1229 goto create_mode; 1230 1231 list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { 1232 /* check width/height */ 1233 if (mode->hdisplay != cmdline_mode->xres || 1234 mode->vdisplay != cmdline_mode->yres) 1235 continue; 1236 1237 if (cmdline_mode->refresh_specified) { 1238 if (mode->vrefresh != cmdline_mode->refresh) 1239 continue; 1240 } 1241 1242 if (cmdline_mode->interlace) { 1243 if (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) 1244 continue; 1245 } 1246 return mode; 1247 } 1248 1249create_mode: 1250 if (cmdline_mode->cvt) 1251 mode = drm_cvt_mode(fb_helper_conn->connector->dev, 1252 cmdline_mode->xres, cmdline_mode->yres, 1253 cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60, 1254 cmdline_mode->rb, cmdline_mode->interlace, 1255 cmdline_mode->margins); 1256 else 1257 mode = drm_gtf_mode(fb_helper_conn->connector->dev, 1258 cmdline_mode->xres, cmdline_mode->yres, 1259 cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60, 1260 cmdline_mode->interlace, 1261 cmdline_mode->margins); 1262 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); 1263 list_add(&mode->head, &fb_helper_conn->connector->modes); 1264 return mode; 1265} 1266 1267static bool drm_connector_enabled(struct drm_connector *connector, bool strict) 1268{ 1269 bool enable; 1270 1271 if (strict) { 1272 enable = connector->status == connector_status_connected; 1273 } else { 1274 enable = connector->status != connector_status_disconnected; 1275 } 1276 return enable; 1277} 1278 1279static void drm_enable_connectors(struct drm_fb_helper *fb_helper, 1280 bool *enabled) 1281{ 1282 bool any_enabled = false; 1283 struct drm_connector *connector; 1284 int i = 0; 1285 1286 for (i = 0; i < fb_helper->connector_count; i++) { 1287 connector = fb_helper->connector_info[i]->connector; 1288 enabled[i] = drm_connector_enabled(connector, true); 1289 DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, 1290 enabled[i] ? "yes" : "no"); 1291 any_enabled |= enabled[i]; 1292 } 1293 1294 if (any_enabled) 1295 return; 1296 1297 for (i = 0; i < fb_helper->connector_count; i++) { 1298 connector = fb_helper->connector_info[i]->connector; 1299 enabled[i] = drm_connector_enabled(connector, false); 1300 } 1301} 1302 1303static bool drm_target_cloned(struct drm_fb_helper *fb_helper, 1304 struct drm_display_mode **modes, 1305 bool *enabled, int width, int height) 1306{ 1307 int count, i, j; 1308 bool can_clone = false; 1309 struct drm_fb_helper_connector *fb_helper_conn; 1310 struct drm_display_mode *dmt_mode, *mode; 1311 1312 /* only contemplate cloning in the single crtc case */ 1313 if (fb_helper->crtc_count > 1) 1314 return false; 1315 1316 count = 0; 1317 for (i = 0; i < fb_helper->connector_count; i++) { 1318 if (enabled[i]) 1319 count++; 1320 } 1321 1322 /* only contemplate cloning if more than one connector is enabled */ 1323 if (count <= 1) 1324 return false; 1325 1326 /* check the command line or if nothing common pick 1024x768 */ 1327 can_clone = true; 1328 for (i = 0; i < fb_helper->connector_count; i++) { 1329 if (!enabled[i]) 1330 continue; 1331 fb_helper_conn = fb_helper->connector_info[i]; 1332 modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); 1333 if (!modes[i]) { 1334 can_clone = false; 1335 break; 1336 } 1337 for (j = 0; j < i; j++) { 1338 if (!enabled[j]) 1339 continue; 1340 if (!drm_mode_equal(modes[j], modes[i])) 1341 can_clone = false; 1342 } 1343 } 1344 1345 if (can_clone) { 1346 DRM_DEBUG_KMS("can clone using command line\n"); 1347 return true; 1348 } 1349 1350 /* try and find a 1024x768 mode on each connector */ 1351 can_clone = true; 1352 dmt_mode = drm_mode_find_dmt(fb_helper->dev, 1024, 768, 60); 1353 1354 for (i = 0; i < fb_helper->connector_count; i++) { 1355 1356 if (!enabled[i]) 1357 continue; 1358 1359 fb_helper_conn = fb_helper->connector_info[i]; 1360 list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { 1361 if (drm_mode_equal(mode, dmt_mode)) 1362 modes[i] = mode; 1363 } 1364 if (!modes[i]) 1365 can_clone = false; 1366 } 1367 1368 if (can_clone) { 1369 DRM_DEBUG_KMS("can clone using 1024x768\n"); 1370 return true; 1371 } 1372 DRM_INFO("kms: can't enable cloning when we probably wanted to.\n"); 1373 return false; 1374} 1375 1376static bool drm_target_preferred(struct drm_fb_helper *fb_helper, 1377 struct drm_display_mode **modes, 1378 bool *enabled, int width, int height) 1379{ 1380 struct drm_fb_helper_connector *fb_helper_conn; 1381 int i; 1382 1383 for (i = 0; i < fb_helper->connector_count; i++) { 1384 fb_helper_conn = fb_helper->connector_info[i]; 1385 1386 if (enabled[i] == false) 1387 continue; 1388 1389 DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n", 1390 fb_helper_conn->connector->base.id); 1391 1392 /* got for command line mode first */ 1393 modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); 1394 if (!modes[i]) { 1395 DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", 1396 fb_helper_conn->connector->base.id); 1397 modes[i] = drm_has_preferred_mode(fb_helper_conn, width, height); 1398 } 1399 /* No preferred modes, pick one off the list */ 1400 if (!modes[i] && !list_empty(&fb_helper_conn->connector->modes)) { 1401 list_for_each_entry(modes[i], &fb_helper_conn->connector->modes, head) 1402 break; 1403 } 1404 DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : 1405 "none"); 1406 } 1407 return true; 1408} 1409 1410static int drm_pick_crtcs(struct drm_fb_helper *fb_helper, 1411 struct drm_fb_helper_crtc **best_crtcs, 1412 struct drm_display_mode **modes, 1413 int n, int width, int height) 1414{ 1415 int c, o; 1416 struct drm_device *dev = fb_helper->dev; 1417 struct drm_connector *connector; 1418 struct drm_connector_helper_funcs *connector_funcs; 1419 struct drm_encoder *encoder; 1420 struct drm_fb_helper_crtc *best_crtc; 1421 int my_score, best_score, score; 1422 struct drm_fb_helper_crtc **crtcs, *crtc; 1423 struct drm_fb_helper_connector *fb_helper_conn; 1424 1425 if (n == fb_helper->connector_count) 1426 return 0; 1427 1428 fb_helper_conn = fb_helper->connector_info[n]; 1429 connector = fb_helper_conn->connector; 1430 1431 best_crtcs[n] = NULL; 1432 best_crtc = NULL; 1433 best_score = drm_pick_crtcs(fb_helper, best_crtcs, modes, n+1, width, height); 1434 if (modes[n] == NULL) 1435 return best_score; 1436 1437 crtcs = malloc(dev->mode_config.num_connector * 1438 sizeof(struct drm_fb_helper_crtc *), DRM_MEM_KMS, 1439 M_WAITOK | M_ZERO); 1440 1441 my_score = 1; 1442 if (connector->status == connector_status_connected) 1443 my_score++; 1444 if (drm_has_cmdline_mode(fb_helper_conn)) 1445 my_score++; 1446 if (drm_has_preferred_mode(fb_helper_conn, width, height)) 1447 my_score++; 1448 1449 connector_funcs = connector->helper_private; 1450 encoder = connector_funcs->best_encoder(connector); 1451 if (!encoder) 1452 goto out; 1453 1454 /* select a crtc for this connector and then attempt to configure 1455 remaining connectors */ 1456 for (c = 0; c < fb_helper->crtc_count; c++) { 1457 crtc = &fb_helper->crtc_info[c]; 1458 1459 if ((encoder->possible_crtcs & (1 << c)) == 0) { 1460 continue; 1461 } 1462 1463 for (o = 0; o < n; o++) 1464 if (best_crtcs[o] == crtc) 1465 break; 1466 1467 if (o < n) { 1468 /* ignore cloning unless only a single crtc */ 1469 if (fb_helper->crtc_count > 1) 1470 continue; 1471 1472 if (!drm_mode_equal(modes[o], modes[n])) 1473 continue; 1474 } 1475 1476 crtcs[n] = crtc; 1477 memcpy(crtcs, best_crtcs, n * sizeof(struct drm_fb_helper_crtc *)); 1478 score = my_score + drm_pick_crtcs(fb_helper, crtcs, modes, n + 1, 1479 width, height); 1480 if (score > best_score) { 1481 best_crtc = crtc; 1482 best_score = score; 1483 memcpy(best_crtcs, crtcs, 1484 dev->mode_config.num_connector * 1485 sizeof(struct drm_fb_helper_crtc *)); 1486 } 1487 } 1488out: 1489 free(crtcs, DRM_MEM_KMS); 1490 return best_score; 1491} 1492 1493static void drm_setup_crtcs(struct drm_fb_helper *fb_helper) 1494{ 1495 struct drm_device *dev = fb_helper->dev; 1496 struct drm_fb_helper_crtc **crtcs; 1497 struct drm_display_mode **modes; 1498 struct drm_encoder *encoder; 1499 struct drm_mode_set *modeset; 1500 bool *enabled; 1501 int width, height; 1502 int i, ret; 1503 1504 DRM_DEBUG_KMS("\n"); 1505 1506 width = dev->mode_config.max_width; 1507 height = dev->mode_config.max_height; 1508 1509 /* clean out all the encoder/crtc combos */ 1510 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 1511 encoder->crtc = NULL; 1512 } 1513 1514 crtcs = malloc(dev->mode_config.num_connector * 1515 sizeof(struct drm_fb_helper_crtc *), DRM_MEM_KMS, 1516 M_WAITOK | M_ZERO); 1517 modes = malloc(dev->mode_config.num_connector * 1518 sizeof(struct drm_display_mode *), DRM_MEM_KMS, 1519 M_WAITOK | M_ZERO); 1520 enabled = malloc(dev->mode_config.num_connector * 1521 sizeof(bool), DRM_MEM_KMS, M_WAITOK | M_ZERO); 1522 1523 drm_enable_connectors(fb_helper, enabled); 1524 1525 ret = drm_target_cloned(fb_helper, modes, enabled, width, height); 1526 if (!ret) { 1527 ret = drm_target_preferred(fb_helper, modes, enabled, width, height); 1528 if (!ret) 1529 DRM_ERROR("Unable to find initial modes\n"); 1530 } 1531 1532 DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height); 1533 1534 drm_pick_crtcs(fb_helper, crtcs, modes, 0, width, height); 1535 1536 /* need to set the modesets up here for use later */ 1537 /* fill out the connector<->crtc mappings into the modesets */ 1538 for (i = 0; i < fb_helper->crtc_count; i++) { 1539 modeset = &fb_helper->crtc_info[i].mode_set; 1540 modeset->num_connectors = 0; 1541 } 1542 1543 for (i = 0; i < fb_helper->connector_count; i++) { 1544 struct drm_display_mode *mode = modes[i]; 1545 struct drm_fb_helper_crtc *fb_crtc = crtcs[i]; 1546 modeset = &fb_crtc->mode_set; 1547 1548 if (mode && fb_crtc) { 1549 DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", 1550 mode->name, fb_crtc->mode_set.crtc->base.id); 1551 fb_crtc->desired_mode = mode; 1552 if (modeset->mode) 1553 drm_mode_destroy(dev, modeset->mode); 1554 modeset->mode = drm_mode_duplicate(dev, 1555 fb_crtc->desired_mode); 1556 modeset->connectors[modeset->num_connectors++] = fb_helper->connector_info[i]->connector; 1557 } 1558 } 1559 1560 free(crtcs, DRM_MEM_KMS); 1561 free(modes, DRM_MEM_KMS); 1562 free(enabled, DRM_MEM_KMS); 1563} 1564 1565/** 1566 * drm_helper_initial_config - setup a sane initial connector configuration 1567 * @dev: DRM device 1568 * 1569 * LOCKING: 1570 * Called at init time, must take mode config lock. 1571 * 1572 * Scan the CRTCs and connectors and try to put together an initial setup. 1573 * At the moment, this is a cloned configuration across all heads with 1574 * a new framebuffer object as the backing store. 1575 * 1576 * RETURNS: 1577 * Zero if everything went ok, nonzero otherwise. 1578 */ 1579bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel) 1580{ 1581 struct drm_device *dev = fb_helper->dev; 1582 int count = 0; 1583 1584 /* disable all the possible outputs/crtcs before entering KMS mode */ 1585 drm_helper_disable_unused_functions(fb_helper->dev); 1586 1587 drm_fb_helper_parse_command_line(fb_helper); 1588 1589 count = drm_fb_helper_probe_connector_modes(fb_helper, 1590 dev->mode_config.max_width, 1591 dev->mode_config.max_height); 1592 /* 1593 * we shouldn't end up with no modes here. 1594 */ 1595 if (count == 0) { 1596 printf("No connectors reported connected with modes\n"); 1597 } 1598 drm_setup_crtcs(fb_helper); 1599 1600 return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); 1601} 1602 1603int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper) 1604{ 1605 struct drm_device *dev = fb_helper->dev; 1606 int count = 0; 1607 u32 max_width, max_height, bpp_sel; 1608 bool bound = false, crtcs_bound = false; 1609 struct drm_crtc *crtc; 1610 1611 if (!fb_helper->fb) 1612 return 0; 1613 1614 sx_xlock(&dev->mode_config.mutex); 1615 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { 1616 if (crtc->fb) 1617 crtcs_bound = true; 1618 if (crtc->fb == fb_helper->fb) 1619 bound = true; 1620 } 1621 1622 if (!bound && crtcs_bound) { 1623 fb_helper->delayed_hotplug = true; 1624 sx_xunlock(&dev->mode_config.mutex); 1625 return 0; 1626 } 1627 DRM_DEBUG_KMS("\n"); 1628 1629 max_width = fb_helper->fb->width; 1630 max_height = fb_helper->fb->height; 1631 bpp_sel = fb_helper->fb->bits_per_pixel; 1632 1633 count = drm_fb_helper_probe_connector_modes(fb_helper, max_width, 1634 max_height); 1635 drm_setup_crtcs(fb_helper); 1636 sx_xunlock(&dev->mode_config.mutex); 1637 1638 return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); 1639} 1640 1641