1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Framebuffer driver for TI OMAP boards 4 * 5 * Copyright (C) 2004 Nokia Corporation 6 * Author: Imre Deak <imre.deak@nokia.com> 7 * 8 * Acknowledgements: 9 * Alex McMains <aam@ridgerun.com> - Original driver 10 * Juha Yrjola <juha.yrjola@nokia.com> - Original driver and improvements 11 * Dirk Behme <dirk.behme@de.bosch.com> - changes for 2.6 kernel API 12 * Texas Instruments - H3 support 13 */ 14 15 #include <linux/export.h> 16 #include <linux/platform_device.h> 17 #include <linux/mm.h> 18 #include <linux/slab.h> 19 #include <linux/uaccess.h> 20 #include <linux/module.h> 21 #include <linux/sysfs.h> 22 23 #include <linux/omap-dma.h> 24 25 #include <linux/soc/ti/omap1-soc.h> 26 #include "omapfb.h" 27 #include "lcdc.h" 28 29 #define MODULE_NAME "omapfb" 30 31 static unsigned int def_accel; 32 static unsigned long def_vram[OMAPFB_PLANE_NUM]; 33 static unsigned int def_vram_cnt; 34 static unsigned long def_vxres; 35 static unsigned long def_vyres; 36 static unsigned int def_rotate; 37 static unsigned int def_mirror; 38 39 static bool manual_update = IS_BUILTIN(CONFIG_FB_OMAP_MANUAL_UPDATE); 40 41 static struct platform_device *fbdev_pdev; 42 static struct lcd_panel *fbdev_panel; 43 static struct omapfb_device *omapfb_dev; 44 45 struct caps_table_struct { 46 unsigned long flag; 47 const char *name; 48 }; 49 50 static const struct caps_table_struct ctrl_caps[] = { 51 { OMAPFB_CAPS_MANUAL_UPDATE, "manual update" }, 52 { OMAPFB_CAPS_TEARSYNC, "tearing synchronization" }, 53 { OMAPFB_CAPS_PLANE_RELOCATE_MEM, "relocate plane memory" }, 54 { OMAPFB_CAPS_PLANE_SCALE, "scale plane" }, 55 { OMAPFB_CAPS_WINDOW_PIXEL_DOUBLE, "pixel double window" }, 56 { OMAPFB_CAPS_WINDOW_SCALE, "scale window" }, 57 { OMAPFB_CAPS_WINDOW_OVERLAY, "overlay window" }, 58 { OMAPFB_CAPS_WINDOW_ROTATE, "rotate window" }, 59 { OMAPFB_CAPS_SET_BACKLIGHT, "backlight setting" }, 60 }; 61 62 static const struct caps_table_struct color_caps[] = { 63 { 1 << OMAPFB_COLOR_RGB565, "RGB565", }, 64 { 1 << OMAPFB_COLOR_YUV422, "YUV422", }, 65 { 1 << OMAPFB_COLOR_YUV420, "YUV420", }, 66 { 1 << OMAPFB_COLOR_CLUT_8BPP, "CLUT8", }, 67 { 1 << OMAPFB_COLOR_CLUT_4BPP, "CLUT4", }, 68 { 1 << OMAPFB_COLOR_CLUT_2BPP, "CLUT2", }, 69 { 1 << OMAPFB_COLOR_CLUT_1BPP, "CLUT1", }, 70 { 1 << OMAPFB_COLOR_RGB444, "RGB444", }, 71 { 1 << OMAPFB_COLOR_YUY422, "YUY422", }, 72 }; 73 74 static void omapdss_release(struct device *dev) 75 { 76 } 77 78 /* dummy device for clocks */ 79 static struct platform_device omapdss_device = { 80 .name = "omapdss_dss", 81 .id = -1, 82 .dev = { 83 .release = omapdss_release, 84 }, 85 }; 86 87 /* 88 * --------------------------------------------------------------------------- 89 * LCD panel 90 * --------------------------------------------------------------------------- 91 */ 92 extern struct lcd_ctrl hwa742_ctrl; 93 94 static const struct lcd_ctrl *ctrls[] = { 95 &omap1_int_ctrl, 96 97 #ifdef CONFIG_FB_OMAP_LCDC_HWA742 98 &hwa742_ctrl, 99 #endif 100 }; 101 102 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL 103 extern struct lcd_ctrl_extif omap1_ext_if; 104 #endif 105 106 static void omapfb_rqueue_lock(struct omapfb_device *fbdev) 107 { 108 mutex_lock(&fbdev->rqueue_mutex); 109 } 110 111 static void omapfb_rqueue_unlock(struct omapfb_device *fbdev) 112 { 113 mutex_unlock(&fbdev->rqueue_mutex); 114 } 115 116 /* 117 * --------------------------------------------------------------------------- 118 * LCD controller and LCD DMA 119 * --------------------------------------------------------------------------- 120 */ 121 /* 122 * Allocate resources needed for LCD controller and LCD DMA operations. Video 123 * memory is allocated from system memory according to the virtual display 124 * size, except if a bigger memory size is specified explicitly as a kernel 125 * parameter. 126 */ 127 static int ctrl_init(struct omapfb_device *fbdev) 128 { 129 int r; 130 int i; 131 132 /* kernel/module vram parameters override boot tags/board config */ 133 if (def_vram_cnt) { 134 for (i = 0; i < def_vram_cnt; i++) 135 fbdev->mem_desc.region[i].size = 136 PAGE_ALIGN(def_vram[i]); 137 fbdev->mem_desc.region_cnt = i; 138 } 139 140 if (!fbdev->mem_desc.region_cnt) { 141 struct lcd_panel *panel = fbdev->panel; 142 int def_size; 143 int bpp = panel->bpp; 144 145 /* 12 bpp is packed in 16 bits */ 146 if (bpp == 12) 147 bpp = 16; 148 def_size = def_vxres * def_vyres * bpp / 8; 149 fbdev->mem_desc.region_cnt = 1; 150 fbdev->mem_desc.region[0].size = PAGE_ALIGN(def_size); 151 } 152 r = fbdev->ctrl->init(fbdev, 0, &fbdev->mem_desc); 153 if (r < 0) { 154 dev_err(fbdev->dev, "controller initialization failed (%d)\n", 155 r); 156 return r; 157 } 158 159 #ifdef DEBUG 160 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { 161 dev_dbg(fbdev->dev, "region%d phys %08x virt %p size=%lu\n", 162 i, 163 fbdev->mem_desc.region[i].paddr, 164 fbdev->mem_desc.region[i].vaddr, 165 fbdev->mem_desc.region[i].size); 166 } 167 #endif 168 return 0; 169 } 170 171 static void ctrl_cleanup(struct omapfb_device *fbdev) 172 { 173 fbdev->ctrl->cleanup(); 174 } 175 176 /* Must be called with fbdev->rqueue_mutex held. */ 177 static int ctrl_change_mode(struct fb_info *fbi) 178 { 179 int r; 180 unsigned long offset; 181 struct omapfb_plane_struct *plane = fbi->par; 182 struct omapfb_device *fbdev = plane->fbdev; 183 struct fb_var_screeninfo *var = &fbi->var; 184 185 offset = var->yoffset * fbi->fix.line_length + 186 var->xoffset * var->bits_per_pixel / 8; 187 188 if (fbdev->ctrl->sync) 189 fbdev->ctrl->sync(); 190 r = fbdev->ctrl->setup_plane(plane->idx, plane->info.channel_out, 191 offset, var->xres_virtual, 192 plane->info.pos_x, plane->info.pos_y, 193 var->xres, var->yres, plane->color_mode); 194 if (r < 0) 195 return r; 196 197 if (fbdev->ctrl->set_rotate != NULL) { 198 r = fbdev->ctrl->set_rotate(var->rotate); 199 if (r < 0) 200 return r; 201 } 202 203 if (fbdev->ctrl->set_scale != NULL) 204 r = fbdev->ctrl->set_scale(plane->idx, 205 var->xres, var->yres, 206 plane->info.out_width, 207 plane->info.out_height); 208 209 return r; 210 } 211 212 /* 213 * --------------------------------------------------------------------------- 214 * fbdev framework callbacks and the ioctl interface 215 * --------------------------------------------------------------------------- 216 */ 217 /* Called each time the omapfb device is opened */ 218 static int omapfb_open(struct fb_info *info, int user) 219 { 220 return 0; 221 } 222 223 static void omapfb_sync(struct fb_info *info); 224 225 /* Called when the omapfb device is closed. We make sure that any pending 226 * gfx DMA operations are ended, before we return. */ 227 static int omapfb_release(struct fb_info *info, int user) 228 { 229 omapfb_sync(info); 230 return 0; 231 } 232 233 /* Store a single color palette entry into a pseudo palette or the hardware 234 * palette if one is available. For now we support only 16bpp and thus store 235 * the entry only to the pseudo palette. 236 */ 237 static int _setcolreg(struct fb_info *info, u_int regno, u_int red, u_int green, 238 u_int blue, u_int transp, int update_hw_pal) 239 { 240 struct omapfb_plane_struct *plane = info->par; 241 struct omapfb_device *fbdev = plane->fbdev; 242 struct fb_var_screeninfo *var = &info->var; 243 int r = 0; 244 245 switch (plane->color_mode) { 246 case OMAPFB_COLOR_YUV422: 247 case OMAPFB_COLOR_YUV420: 248 case OMAPFB_COLOR_YUY422: 249 r = -EINVAL; 250 break; 251 case OMAPFB_COLOR_CLUT_8BPP: 252 case OMAPFB_COLOR_CLUT_4BPP: 253 case OMAPFB_COLOR_CLUT_2BPP: 254 case OMAPFB_COLOR_CLUT_1BPP: 255 if (fbdev->ctrl->setcolreg) 256 r = fbdev->ctrl->setcolreg(regno, red, green, blue, 257 transp, update_hw_pal); 258 fallthrough; 259 case OMAPFB_COLOR_RGB565: 260 case OMAPFB_COLOR_RGB444: 261 if (r != 0) 262 break; 263 264 if (regno < 16) { 265 u16 pal; 266 pal = ((red >> (16 - var->red.length)) << 267 var->red.offset) | 268 ((green >> (16 - var->green.length)) << 269 var->green.offset) | 270 (blue >> (16 - var->blue.length)); 271 ((u32 *)(info->pseudo_palette))[regno] = pal; 272 } 273 break; 274 default: 275 BUG(); 276 } 277 return r; 278 } 279 280 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, 281 u_int transp, struct fb_info *info) 282 { 283 return _setcolreg(info, regno, red, green, blue, transp, 1); 284 } 285 286 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info) 287 { 288 int count, index, r; 289 u16 *red, *green, *blue, *transp; 290 u16 trans = 0xffff; 291 292 red = cmap->red; 293 green = cmap->green; 294 blue = cmap->blue; 295 transp = cmap->transp; 296 index = cmap->start; 297 298 for (count = 0; count < cmap->len; count++) { 299 if (transp) 300 trans = *transp++; 301 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans, 302 count == cmap->len - 1); 303 if (r != 0) 304 return r; 305 } 306 307 return 0; 308 } 309 310 static int omapfb_update_full_screen(struct fb_info *fbi); 311 312 static int omapfb_blank(int blank, struct fb_info *fbi) 313 { 314 struct omapfb_plane_struct *plane = fbi->par; 315 struct omapfb_device *fbdev = plane->fbdev; 316 int do_update = 0; 317 int r = 0; 318 319 omapfb_rqueue_lock(fbdev); 320 switch (blank) { 321 case FB_BLANK_UNBLANK: 322 if (fbdev->state == OMAPFB_SUSPENDED) { 323 if (fbdev->ctrl->resume) 324 fbdev->ctrl->resume(); 325 if (fbdev->panel->enable) 326 fbdev->panel->enable(fbdev->panel); 327 fbdev->state = OMAPFB_ACTIVE; 328 if (fbdev->ctrl->get_update_mode() == 329 OMAPFB_MANUAL_UPDATE) 330 do_update = 1; 331 } 332 break; 333 case FB_BLANK_POWERDOWN: 334 if (fbdev->state == OMAPFB_ACTIVE) { 335 if (fbdev->panel->disable) 336 fbdev->panel->disable(fbdev->panel); 337 if (fbdev->ctrl->suspend) 338 fbdev->ctrl->suspend(); 339 fbdev->state = OMAPFB_SUSPENDED; 340 } 341 break; 342 default: 343 r = -EINVAL; 344 } 345 omapfb_rqueue_unlock(fbdev); 346 347 if (r == 0 && do_update) 348 r = omapfb_update_full_screen(fbi); 349 350 return r; 351 } 352 353 static void omapfb_sync(struct fb_info *fbi) 354 { 355 struct omapfb_plane_struct *plane = fbi->par; 356 struct omapfb_device *fbdev = plane->fbdev; 357 358 omapfb_rqueue_lock(fbdev); 359 if (fbdev->ctrl->sync) 360 fbdev->ctrl->sync(); 361 omapfb_rqueue_unlock(fbdev); 362 } 363 364 /* 365 * Set fb_info.fix fields and also updates fbdev. 366 * When calling this fb_info.var must be set up already. 367 */ 368 static void set_fb_fix(struct fb_info *fbi, int from_init) 369 { 370 struct fb_fix_screeninfo *fix = &fbi->fix; 371 struct fb_var_screeninfo *var = &fbi->var; 372 struct omapfb_plane_struct *plane = fbi->par; 373 struct omapfb_mem_region *rg; 374 int bpp; 375 376 rg = &plane->fbdev->mem_desc.region[plane->idx]; 377 fbi->screen_base = rg->vaddr; 378 379 if (!from_init) { 380 mutex_lock(&fbi->mm_lock); 381 fix->smem_start = rg->paddr; 382 fix->smem_len = rg->size; 383 mutex_unlock(&fbi->mm_lock); 384 } else { 385 fix->smem_start = rg->paddr; 386 fix->smem_len = rg->size; 387 } 388 389 fix->type = FB_TYPE_PACKED_PIXELS; 390 bpp = var->bits_per_pixel; 391 if (var->nonstd) 392 fix->visual = FB_VISUAL_PSEUDOCOLOR; 393 else switch (var->bits_per_pixel) { 394 case 16: 395 case 12: 396 fix->visual = FB_VISUAL_TRUECOLOR; 397 /* 12bpp is stored in 16 bits */ 398 bpp = 16; 399 break; 400 case 1: 401 case 2: 402 case 4: 403 case 8: 404 fix->visual = FB_VISUAL_PSEUDOCOLOR; 405 break; 406 } 407 fix->accel = FB_ACCEL_OMAP1610; 408 fix->line_length = var->xres_virtual * bpp / 8; 409 } 410 411 static int set_color_mode(struct omapfb_plane_struct *plane, 412 struct fb_var_screeninfo *var) 413 { 414 switch (var->nonstd) { 415 case 0: 416 break; 417 case OMAPFB_COLOR_YUV422: 418 var->bits_per_pixel = 16; 419 plane->color_mode = var->nonstd; 420 return 0; 421 case OMAPFB_COLOR_YUV420: 422 var->bits_per_pixel = 12; 423 plane->color_mode = var->nonstd; 424 return 0; 425 case OMAPFB_COLOR_YUY422: 426 var->bits_per_pixel = 16; 427 plane->color_mode = var->nonstd; 428 return 0; 429 default: 430 return -EINVAL; 431 } 432 433 switch (var->bits_per_pixel) { 434 case 1: 435 plane->color_mode = OMAPFB_COLOR_CLUT_1BPP; 436 return 0; 437 case 2: 438 plane->color_mode = OMAPFB_COLOR_CLUT_2BPP; 439 return 0; 440 case 4: 441 plane->color_mode = OMAPFB_COLOR_CLUT_4BPP; 442 return 0; 443 case 8: 444 plane->color_mode = OMAPFB_COLOR_CLUT_8BPP; 445 return 0; 446 case 12: 447 var->bits_per_pixel = 16; 448 fallthrough; 449 case 16: 450 if (plane->fbdev->panel->bpp == 12) 451 plane->color_mode = OMAPFB_COLOR_RGB444; 452 else 453 plane->color_mode = OMAPFB_COLOR_RGB565; 454 return 0; 455 default: 456 return -EINVAL; 457 } 458 } 459 460 /* 461 * Check the values in var against our capabilities and in case of out of 462 * bound values try to adjust them. 463 */ 464 static int set_fb_var(struct fb_info *fbi, 465 struct fb_var_screeninfo *var) 466 { 467 int bpp; 468 unsigned long max_frame_size; 469 unsigned long line_size; 470 int xres_min, xres_max; 471 int yres_min, yres_max; 472 struct omapfb_plane_struct *plane = fbi->par; 473 struct omapfb_device *fbdev = plane->fbdev; 474 struct lcd_panel *panel = fbdev->panel; 475 476 if (set_color_mode(plane, var) < 0) 477 return -EINVAL; 478 479 bpp = var->bits_per_pixel; 480 if (plane->color_mode == OMAPFB_COLOR_RGB444) 481 bpp = 16; 482 483 switch (var->rotate) { 484 case 0: 485 case 180: 486 xres_min = OMAPFB_PLANE_XRES_MIN; 487 xres_max = panel->x_res; 488 yres_min = OMAPFB_PLANE_YRES_MIN; 489 yres_max = panel->y_res; 490 if (cpu_is_omap15xx()) { 491 var->xres = panel->x_res; 492 var->yres = panel->y_res; 493 } 494 break; 495 case 90: 496 case 270: 497 xres_min = OMAPFB_PLANE_YRES_MIN; 498 xres_max = panel->y_res; 499 yres_min = OMAPFB_PLANE_XRES_MIN; 500 yres_max = panel->x_res; 501 if (cpu_is_omap15xx()) { 502 var->xres = panel->y_res; 503 var->yres = panel->x_res; 504 } 505 break; 506 default: 507 return -EINVAL; 508 } 509 510 if (var->xres < xres_min) 511 var->xres = xres_min; 512 if (var->yres < yres_min) 513 var->yres = yres_min; 514 if (var->xres > xres_max) 515 var->xres = xres_max; 516 if (var->yres > yres_max) 517 var->yres = yres_max; 518 519 if (var->xres_virtual < var->xres) 520 var->xres_virtual = var->xres; 521 if (var->yres_virtual < var->yres) 522 var->yres_virtual = var->yres; 523 max_frame_size = fbdev->mem_desc.region[plane->idx].size; 524 line_size = var->xres_virtual * bpp / 8; 525 if (line_size * var->yres_virtual > max_frame_size) { 526 /* Try to keep yres_virtual first */ 527 line_size = max_frame_size / var->yres_virtual; 528 var->xres_virtual = line_size * 8 / bpp; 529 if (var->xres_virtual < var->xres) { 530 /* Still doesn't fit. Shrink yres_virtual too */ 531 var->xres_virtual = var->xres; 532 line_size = var->xres * bpp / 8; 533 var->yres_virtual = max_frame_size / line_size; 534 } 535 /* Recheck this, as the virtual size changed. */ 536 if (var->xres_virtual < var->xres) 537 var->xres = var->xres_virtual; 538 if (var->yres_virtual < var->yres) 539 var->yres = var->yres_virtual; 540 if (var->xres < xres_min || var->yres < yres_min) 541 return -EINVAL; 542 } 543 if (var->xres + var->xoffset > var->xres_virtual) 544 var->xoffset = var->xres_virtual - var->xres; 545 if (var->yres + var->yoffset > var->yres_virtual) 546 var->yoffset = var->yres_virtual - var->yres; 547 548 if (plane->color_mode == OMAPFB_COLOR_RGB444) { 549 var->red.offset = 8; 550 var->red.length = 4; 551 var->red.msb_right = 0; 552 var->green.offset = 4; 553 var->green.length = 4; 554 var->green.msb_right = 0; 555 var->blue.offset = 0; 556 var->blue.length = 4; 557 var->blue.msb_right = 0; 558 } else { 559 var->red.offset = 11; 560 var->red.length = 5; 561 var->red.msb_right = 0; 562 var->green.offset = 5; 563 var->green.length = 6; 564 var->green.msb_right = 0; 565 var->blue.offset = 0; 566 var->blue.length = 5; 567 var->blue.msb_right = 0; 568 } 569 570 var->height = -1; 571 var->width = -1; 572 var->grayscale = 0; 573 574 /* pixclock in ps, the rest in pixclock */ 575 var->pixclock = 10000000 / (panel->pixel_clock / 100); 576 var->left_margin = panel->hfp; 577 var->right_margin = panel->hbp; 578 var->upper_margin = panel->vfp; 579 var->lower_margin = panel->vbp; 580 var->hsync_len = panel->hsw; 581 var->vsync_len = panel->vsw; 582 583 /* TODO: get these from panel->config */ 584 var->vmode = FB_VMODE_NONINTERLACED; 585 var->sync = 0; 586 587 return 0; 588 } 589 590 591 /* 592 * Set new x,y offsets in the virtual display for the visible area and switch 593 * to the new mode. 594 */ 595 static int omapfb_pan_display(struct fb_var_screeninfo *var, 596 struct fb_info *fbi) 597 { 598 struct omapfb_plane_struct *plane = fbi->par; 599 struct omapfb_device *fbdev = plane->fbdev; 600 int r = 0; 601 602 omapfb_rqueue_lock(fbdev); 603 if (var->xoffset != fbi->var.xoffset || 604 var->yoffset != fbi->var.yoffset) { 605 struct fb_var_screeninfo *new_var = &fbdev->new_var; 606 607 memcpy(new_var, &fbi->var, sizeof(*new_var)); 608 new_var->xoffset = var->xoffset; 609 new_var->yoffset = var->yoffset; 610 if (set_fb_var(fbi, new_var)) 611 r = -EINVAL; 612 else { 613 memcpy(&fbi->var, new_var, sizeof(*new_var)); 614 ctrl_change_mode(fbi); 615 } 616 } 617 omapfb_rqueue_unlock(fbdev); 618 619 return r; 620 } 621 622 /* Set mirror to vertical axis and switch to the new mode. */ 623 static int omapfb_mirror(struct fb_info *fbi, int mirror) 624 { 625 struct omapfb_plane_struct *plane = fbi->par; 626 struct omapfb_device *fbdev = plane->fbdev; 627 int r = 0; 628 629 omapfb_rqueue_lock(fbdev); 630 mirror = mirror ? 1 : 0; 631 if (cpu_is_omap15xx()) 632 r = -EINVAL; 633 else if (mirror != plane->info.mirror) { 634 plane->info.mirror = mirror; 635 r = ctrl_change_mode(fbi); 636 } 637 omapfb_rqueue_unlock(fbdev); 638 639 return r; 640 } 641 642 /* 643 * Check values in var, try to adjust them in case of out of bound values if 644 * possible, or return error. 645 */ 646 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi) 647 { 648 struct omapfb_plane_struct *plane = fbi->par; 649 struct omapfb_device *fbdev = plane->fbdev; 650 int r; 651 652 omapfb_rqueue_lock(fbdev); 653 if (fbdev->ctrl->sync != NULL) 654 fbdev->ctrl->sync(); 655 r = set_fb_var(fbi, var); 656 omapfb_rqueue_unlock(fbdev); 657 658 return r; 659 } 660 661 /* 662 * Switch to a new mode. The parameters for it has been check already by 663 * omapfb_check_var. 664 */ 665 static int omapfb_set_par(struct fb_info *fbi) 666 { 667 struct omapfb_plane_struct *plane = fbi->par; 668 struct omapfb_device *fbdev = plane->fbdev; 669 int r = 0; 670 671 omapfb_rqueue_lock(fbdev); 672 set_fb_fix(fbi, 0); 673 r = ctrl_change_mode(fbi); 674 omapfb_rqueue_unlock(fbdev); 675 676 return r; 677 } 678 679 static int omapfb_update_window_async(struct fb_info *fbi, 680 struct omapfb_update_window *win, 681 void (*callback)(void *), 682 void *callback_data) 683 { 684 int xres, yres; 685 struct omapfb_plane_struct *plane = fbi->par; 686 struct omapfb_device *fbdev = plane->fbdev; 687 struct fb_var_screeninfo *var = &fbi->var; 688 689 switch (var->rotate) { 690 case 0: 691 case 180: 692 xres = fbdev->panel->x_res; 693 yres = fbdev->panel->y_res; 694 break; 695 case 90: 696 case 270: 697 xres = fbdev->panel->y_res; 698 yres = fbdev->panel->x_res; 699 break; 700 default: 701 return -EINVAL; 702 } 703 704 if (win->x >= xres || win->y >= yres || 705 win->out_x > xres || win->out_y > yres) 706 return -EINVAL; 707 708 if (!fbdev->ctrl->update_window || 709 fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE) 710 return -ENODEV; 711 712 if (win->x + win->width > xres) 713 win->width = xres - win->x; 714 if (win->y + win->height > yres) 715 win->height = yres - win->y; 716 if (win->out_x + win->out_width > xres) 717 win->out_width = xres - win->out_x; 718 if (win->out_y + win->out_height > yres) 719 win->out_height = yres - win->out_y; 720 if (!win->width || !win->height || !win->out_width || !win->out_height) 721 return 0; 722 723 return fbdev->ctrl->update_window(fbi, win, callback, callback_data); 724 } 725 726 static int omapfb_update_win(struct fb_info *fbi, 727 struct omapfb_update_window *win) 728 { 729 struct omapfb_plane_struct *plane = fbi->par; 730 int ret; 731 732 omapfb_rqueue_lock(plane->fbdev); 733 ret = omapfb_update_window_async(fbi, win, NULL, NULL); 734 omapfb_rqueue_unlock(plane->fbdev); 735 736 return ret; 737 } 738 739 static int omapfb_update_full_screen(struct fb_info *fbi) 740 { 741 struct omapfb_plane_struct *plane = fbi->par; 742 struct omapfb_device *fbdev = plane->fbdev; 743 struct omapfb_update_window win; 744 int r; 745 746 if (!fbdev->ctrl->update_window || 747 fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE) 748 return -ENODEV; 749 750 win.x = 0; 751 win.y = 0; 752 win.width = fbi->var.xres; 753 win.height = fbi->var.yres; 754 win.out_x = 0; 755 win.out_y = 0; 756 win.out_width = fbi->var.xres; 757 win.out_height = fbi->var.yres; 758 win.format = 0; 759 760 omapfb_rqueue_lock(fbdev); 761 r = fbdev->ctrl->update_window(fbi, &win, NULL, NULL); 762 omapfb_rqueue_unlock(fbdev); 763 764 return r; 765 } 766 767 static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi) 768 { 769 struct omapfb_plane_struct *plane = fbi->par; 770 struct omapfb_device *fbdev = plane->fbdev; 771 struct lcd_panel *panel = fbdev->panel; 772 struct omapfb_plane_info old_info; 773 int r = 0; 774 775 if (pi->pos_x + pi->out_width > panel->x_res || 776 pi->pos_y + pi->out_height > panel->y_res) 777 return -EINVAL; 778 779 omapfb_rqueue_lock(fbdev); 780 if (pi->enabled && !fbdev->mem_desc.region[plane->idx].size) { 781 /* 782 * This plane's memory was freed, can't enable it 783 * until it's reallocated. 784 */ 785 r = -EINVAL; 786 goto out; 787 } 788 old_info = plane->info; 789 plane->info = *pi; 790 if (pi->enabled) { 791 r = ctrl_change_mode(fbi); 792 if (r < 0) { 793 plane->info = old_info; 794 goto out; 795 } 796 } 797 r = fbdev->ctrl->enable_plane(plane->idx, pi->enabled); 798 if (r < 0) { 799 plane->info = old_info; 800 goto out; 801 } 802 out: 803 omapfb_rqueue_unlock(fbdev); 804 return r; 805 } 806 807 static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi) 808 { 809 struct omapfb_plane_struct *plane = fbi->par; 810 811 *pi = plane->info; 812 return 0; 813 } 814 815 static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi) 816 { 817 struct omapfb_plane_struct *plane = fbi->par; 818 struct omapfb_device *fbdev = plane->fbdev; 819 struct omapfb_mem_region *rg = &fbdev->mem_desc.region[plane->idx]; 820 size_t size; 821 int r = 0; 822 823 if (fbdev->ctrl->setup_mem == NULL) 824 return -ENODEV; 825 if (mi->type != OMAPFB_MEMTYPE_SDRAM) 826 return -EINVAL; 827 828 size = PAGE_ALIGN(mi->size); 829 omapfb_rqueue_lock(fbdev); 830 if (plane->info.enabled) { 831 r = -EBUSY; 832 goto out; 833 } 834 if (rg->size != size || rg->type != mi->type) { 835 struct fb_var_screeninfo *new_var = &fbdev->new_var; 836 unsigned long old_size = rg->size; 837 u8 old_type = rg->type; 838 unsigned long paddr; 839 840 rg->size = size; 841 rg->type = mi->type; 842 /* 843 * size == 0 is a special case, for which we 844 * don't check / adjust the screen parameters. 845 * This isn't a problem since the plane can't 846 * be reenabled unless its size is > 0. 847 */ 848 if (old_size != size && size) { 849 memcpy(new_var, &fbi->var, sizeof(*new_var)); 850 r = set_fb_var(fbi, new_var); 851 if (r < 0) 852 goto out; 853 } 854 855 if (fbdev->ctrl->sync) 856 fbdev->ctrl->sync(); 857 r = fbdev->ctrl->setup_mem(plane->idx, size, mi->type, &paddr); 858 if (r < 0) { 859 /* Revert changes. */ 860 rg->size = old_size; 861 rg->type = old_type; 862 goto out; 863 } 864 rg->paddr = paddr; 865 866 if (old_size != size) { 867 if (size) { 868 memcpy(&fbi->var, new_var, sizeof(fbi->var)); 869 set_fb_fix(fbi, 0); 870 } else { 871 /* 872 * Set these explicitly to indicate that the 873 * plane memory is dealloce'd, the other 874 * screen parameters in var / fix are invalid. 875 */ 876 mutex_lock(&fbi->mm_lock); 877 fbi->fix.smem_start = 0; 878 fbi->fix.smem_len = 0; 879 mutex_unlock(&fbi->mm_lock); 880 } 881 } 882 } 883 out: 884 omapfb_rqueue_unlock(fbdev); 885 886 return r; 887 } 888 889 static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi) 890 { 891 struct omapfb_plane_struct *plane = fbi->par; 892 struct omapfb_device *fbdev = plane->fbdev; 893 struct omapfb_mem_region *rg; 894 895 rg = &fbdev->mem_desc.region[plane->idx]; 896 memset(mi, 0, sizeof(*mi)); 897 mi->size = rg->size; 898 mi->type = rg->type; 899 900 return 0; 901 } 902 903 static int omapfb_set_color_key(struct omapfb_device *fbdev, 904 struct omapfb_color_key *ck) 905 { 906 int r; 907 908 if (!fbdev->ctrl->set_color_key) 909 return -ENODEV; 910 911 omapfb_rqueue_lock(fbdev); 912 r = fbdev->ctrl->set_color_key(ck); 913 omapfb_rqueue_unlock(fbdev); 914 915 return r; 916 } 917 918 static int omapfb_get_color_key(struct omapfb_device *fbdev, 919 struct omapfb_color_key *ck) 920 { 921 int r; 922 923 if (!fbdev->ctrl->get_color_key) 924 return -ENODEV; 925 926 omapfb_rqueue_lock(fbdev); 927 r = fbdev->ctrl->get_color_key(ck); 928 omapfb_rqueue_unlock(fbdev); 929 930 return r; 931 } 932 933 static struct blocking_notifier_head omapfb_client_list[OMAPFB_PLANE_NUM]; 934 static int notifier_inited; 935 936 static void omapfb_init_notifier(void) 937 { 938 int i; 939 940 for (i = 0; i < OMAPFB_PLANE_NUM; i++) 941 BLOCKING_INIT_NOTIFIER_HEAD(&omapfb_client_list[i]); 942 } 943 944 int omapfb_register_client(struct omapfb_notifier_block *omapfb_nb, 945 omapfb_notifier_callback_t callback, 946 void *callback_data) 947 { 948 int r; 949 950 if ((unsigned)omapfb_nb->plane_idx >= OMAPFB_PLANE_NUM) 951 return -EINVAL; 952 953 if (!notifier_inited) { 954 omapfb_init_notifier(); 955 notifier_inited = 1; 956 } 957 958 omapfb_nb->nb.notifier_call = (int (*)(struct notifier_block *, 959 unsigned long, void *))callback; 960 omapfb_nb->data = callback_data; 961 r = blocking_notifier_chain_register( 962 &omapfb_client_list[omapfb_nb->plane_idx], 963 &omapfb_nb->nb); 964 if (r) 965 return r; 966 if (omapfb_dev != NULL && 967 omapfb_dev->ctrl && omapfb_dev->ctrl->bind_client) { 968 omapfb_dev->ctrl->bind_client(omapfb_nb); 969 } 970 971 return 0; 972 } 973 EXPORT_SYMBOL(omapfb_register_client); 974 975 int omapfb_unregister_client(struct omapfb_notifier_block *omapfb_nb) 976 { 977 return blocking_notifier_chain_unregister( 978 &omapfb_client_list[omapfb_nb->plane_idx], &omapfb_nb->nb); 979 } 980 EXPORT_SYMBOL(omapfb_unregister_client); 981 982 void omapfb_notify_clients(struct omapfb_device *fbdev, unsigned long event) 983 { 984 int i; 985 986 if (!notifier_inited) 987 /* no client registered yet */ 988 return; 989 990 for (i = 0; i < OMAPFB_PLANE_NUM; i++) 991 blocking_notifier_call_chain(&omapfb_client_list[i], event, 992 fbdev->fb_info[i]); 993 } 994 EXPORT_SYMBOL(omapfb_notify_clients); 995 996 static int omapfb_set_update_mode(struct omapfb_device *fbdev, 997 enum omapfb_update_mode mode) 998 { 999 int r; 1000 1001 omapfb_rqueue_lock(fbdev); 1002 r = fbdev->ctrl->set_update_mode(mode); 1003 omapfb_rqueue_unlock(fbdev); 1004 1005 return r; 1006 } 1007 1008 static enum omapfb_update_mode omapfb_get_update_mode(struct omapfb_device *fbdev) 1009 { 1010 int r; 1011 1012 omapfb_rqueue_lock(fbdev); 1013 r = fbdev->ctrl->get_update_mode(); 1014 omapfb_rqueue_unlock(fbdev); 1015 1016 return r; 1017 } 1018 1019 static void omapfb_get_caps(struct omapfb_device *fbdev, int plane, 1020 struct omapfb_caps *caps) 1021 { 1022 memset(caps, 0, sizeof(*caps)); 1023 fbdev->ctrl->get_caps(plane, caps); 1024 if (fbdev->panel->get_caps) 1025 caps->ctrl |= fbdev->panel->get_caps(fbdev->panel); 1026 } 1027 1028 /* For lcd testing */ 1029 void omapfb_write_first_pixel(struct omapfb_device *fbdev, u16 pixval) 1030 { 1031 omapfb_rqueue_lock(fbdev); 1032 *(u16 *)fbdev->mem_desc.region[0].vaddr = pixval; 1033 if (fbdev->ctrl->get_update_mode() == OMAPFB_MANUAL_UPDATE) { 1034 struct omapfb_update_window win; 1035 1036 memset(&win, 0, sizeof(win)); 1037 win.width = 2; 1038 win.height = 2; 1039 win.out_width = 2; 1040 win.out_height = 2; 1041 fbdev->ctrl->update_window(fbdev->fb_info[0], &win, NULL, NULL); 1042 } 1043 omapfb_rqueue_unlock(fbdev); 1044 } 1045 EXPORT_SYMBOL(omapfb_write_first_pixel); 1046 1047 /* 1048 * Ioctl interface. Part of the kernel mode frame buffer API is duplicated 1049 * here to be accessible by user mode code. 1050 */ 1051 static int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, 1052 unsigned long arg) 1053 { 1054 struct omapfb_plane_struct *plane = fbi->par; 1055 struct omapfb_device *fbdev = plane->fbdev; 1056 const struct fb_ops *ops = fbi->fbops; 1057 union { 1058 struct omapfb_update_window update_window; 1059 struct omapfb_plane_info plane_info; 1060 struct omapfb_mem_info mem_info; 1061 struct omapfb_color_key color_key; 1062 enum omapfb_update_mode update_mode; 1063 struct omapfb_caps caps; 1064 unsigned int mirror; 1065 int plane_out; 1066 int enable_plane; 1067 } p; 1068 int r = 0; 1069 1070 BUG_ON(!ops); 1071 switch (cmd) { 1072 case OMAPFB_MIRROR: 1073 if (get_user(p.mirror, (int __user *)arg)) 1074 r = -EFAULT; 1075 else 1076 omapfb_mirror(fbi, p.mirror); 1077 break; 1078 case OMAPFB_SYNC_GFX: 1079 omapfb_sync(fbi); 1080 break; 1081 case OMAPFB_VSYNC: 1082 break; 1083 case OMAPFB_SET_UPDATE_MODE: 1084 if (get_user(p.update_mode, (int __user *)arg)) 1085 r = -EFAULT; 1086 else 1087 r = omapfb_set_update_mode(fbdev, p.update_mode); 1088 break; 1089 case OMAPFB_GET_UPDATE_MODE: 1090 p.update_mode = omapfb_get_update_mode(fbdev); 1091 if (put_user(p.update_mode, 1092 (enum omapfb_update_mode __user *)arg)) 1093 r = -EFAULT; 1094 break; 1095 case OMAPFB_UPDATE_WINDOW_OLD: 1096 if (copy_from_user(&p.update_window, (void __user *)arg, 1097 sizeof(struct omapfb_update_window_old))) 1098 r = -EFAULT; 1099 else { 1100 struct omapfb_update_window *u = &p.update_window; 1101 u->out_x = u->x; 1102 u->out_y = u->y; 1103 u->out_width = u->width; 1104 u->out_height = u->height; 1105 memset(u->reserved, 0, sizeof(u->reserved)); 1106 r = omapfb_update_win(fbi, u); 1107 } 1108 break; 1109 case OMAPFB_UPDATE_WINDOW: 1110 if (copy_from_user(&p.update_window, (void __user *)arg, 1111 sizeof(p.update_window))) 1112 r = -EFAULT; 1113 else 1114 r = omapfb_update_win(fbi, &p.update_window); 1115 break; 1116 case OMAPFB_SETUP_PLANE: 1117 if (copy_from_user(&p.plane_info, (void __user *)arg, 1118 sizeof(p.plane_info))) 1119 r = -EFAULT; 1120 else 1121 r = omapfb_setup_plane(fbi, &p.plane_info); 1122 break; 1123 case OMAPFB_QUERY_PLANE: 1124 if ((r = omapfb_query_plane(fbi, &p.plane_info)) < 0) 1125 break; 1126 if (copy_to_user((void __user *)arg, &p.plane_info, 1127 sizeof(p.plane_info))) 1128 r = -EFAULT; 1129 break; 1130 case OMAPFB_SETUP_MEM: 1131 if (copy_from_user(&p.mem_info, (void __user *)arg, 1132 sizeof(p.mem_info))) 1133 r = -EFAULT; 1134 else 1135 r = omapfb_setup_mem(fbi, &p.mem_info); 1136 break; 1137 case OMAPFB_QUERY_MEM: 1138 if ((r = omapfb_query_mem(fbi, &p.mem_info)) < 0) 1139 break; 1140 if (copy_to_user((void __user *)arg, &p.mem_info, 1141 sizeof(p.mem_info))) 1142 r = -EFAULT; 1143 break; 1144 case OMAPFB_SET_COLOR_KEY: 1145 if (copy_from_user(&p.color_key, (void __user *)arg, 1146 sizeof(p.color_key))) 1147 r = -EFAULT; 1148 else 1149 r = omapfb_set_color_key(fbdev, &p.color_key); 1150 break; 1151 case OMAPFB_GET_COLOR_KEY: 1152 if ((r = omapfb_get_color_key(fbdev, &p.color_key)) < 0) 1153 break; 1154 if (copy_to_user((void __user *)arg, &p.color_key, 1155 sizeof(p.color_key))) 1156 r = -EFAULT; 1157 break; 1158 case OMAPFB_GET_CAPS: 1159 omapfb_get_caps(fbdev, plane->idx, &p.caps); 1160 if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps))) 1161 r = -EFAULT; 1162 break; 1163 case OMAPFB_LCD_TEST: 1164 { 1165 int test_num; 1166 1167 if (get_user(test_num, (int __user *)arg)) { 1168 r = -EFAULT; 1169 break; 1170 } 1171 if (!fbdev->panel->run_test) { 1172 r = -EINVAL; 1173 break; 1174 } 1175 r = fbdev->panel->run_test(fbdev->panel, test_num); 1176 break; 1177 } 1178 case OMAPFB_CTRL_TEST: 1179 { 1180 int test_num; 1181 1182 if (get_user(test_num, (int __user *)arg)) { 1183 r = -EFAULT; 1184 break; 1185 } 1186 if (!fbdev->ctrl->run_test) { 1187 r = -EINVAL; 1188 break; 1189 } 1190 r = fbdev->ctrl->run_test(test_num); 1191 break; 1192 } 1193 default: 1194 r = -EINVAL; 1195 } 1196 1197 return r; 1198 } 1199 1200 static int omapfb_mmap(struct fb_info *info, struct vm_area_struct *vma) 1201 { 1202 struct omapfb_plane_struct *plane = info->par; 1203 struct omapfb_device *fbdev = plane->fbdev; 1204 int r; 1205 1206 vma->vm_page_prot = pgprot_decrypted(vma->vm_page_prot); 1207 1208 omapfb_rqueue_lock(fbdev); 1209 r = fbdev->ctrl->mmap(info, vma); 1210 omapfb_rqueue_unlock(fbdev); 1211 1212 return r; 1213 } 1214 1215 /* 1216 * Callback table for the frame buffer framework. Some of these pointers 1217 * will be changed according to the current setting of fb_info->accel_flags. 1218 */ 1219 static struct fb_ops omapfb_ops = { 1220 .owner = THIS_MODULE, 1221 FB_DEFAULT_IOMEM_OPS, 1222 .fb_open = omapfb_open, 1223 .fb_release = omapfb_release, 1224 .fb_setcolreg = omapfb_setcolreg, 1225 .fb_setcmap = omapfb_setcmap, 1226 .fb_blank = omapfb_blank, 1227 .fb_ioctl = omapfb_ioctl, 1228 .fb_check_var = omapfb_check_var, 1229 .fb_set_par = omapfb_set_par, 1230 .fb_pan_display = omapfb_pan_display, 1231 }; 1232 1233 /* 1234 * --------------------------------------------------------------------------- 1235 * Sysfs interface 1236 * --------------------------------------------------------------------------- 1237 */ 1238 /* omapfbX sysfs entries */ 1239 static ssize_t omapfb_show_caps_num(struct device *dev, 1240 struct device_attribute *attr, char *buf) 1241 { 1242 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1243 int plane; 1244 size_t size = 0; 1245 struct omapfb_caps caps; 1246 1247 plane = 0; 1248 while (plane < OMAPFB_PLANE_NUM) { 1249 omapfb_get_caps(fbdev, plane, &caps); 1250 size += sysfs_emit_at(buf, size, 1251 "plane#%d %#010x %#010x %#010x\n", 1252 plane, caps.ctrl, caps.plane_color, caps.wnd_color); 1253 plane++; 1254 } 1255 return size; 1256 } 1257 1258 static ssize_t omapfb_show_caps_text(struct device *dev, 1259 struct device_attribute *attr, char *buf) 1260 { 1261 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1262 int i; 1263 struct omapfb_caps caps; 1264 int plane; 1265 size_t size = 0; 1266 1267 plane = 0; 1268 while (plane < OMAPFB_PLANE_NUM) { 1269 omapfb_get_caps(fbdev, plane, &caps); 1270 size += sysfs_emit_at(buf, size, "plane#%d:\n", plane); 1271 for (i = 0; i < ARRAY_SIZE(ctrl_caps); i++) { 1272 if (ctrl_caps[i].flag & caps.ctrl) 1273 size += sysfs_emit_at(buf, size, 1274 " %s\n", ctrl_caps[i].name); 1275 } 1276 size += sysfs_emit_at(buf, size, " plane colors:\n"); 1277 for (i = 0; i < ARRAY_SIZE(color_caps); i++) { 1278 if (color_caps[i].flag & caps.plane_color) 1279 size += sysfs_emit_at(buf, size, 1280 " %s\n", color_caps[i].name); 1281 } 1282 size += sysfs_emit_at(buf, size, " window colors:\n"); 1283 for (i = 0; i < ARRAY_SIZE(color_caps); i++) { 1284 if (color_caps[i].flag & caps.wnd_color) 1285 size += sysfs_emit_at(buf, size, 1286 " %s\n", color_caps[i].name); 1287 } 1288 1289 plane++; 1290 } 1291 return size; 1292 } 1293 1294 static DEVICE_ATTR(caps_num, 0444, omapfb_show_caps_num, NULL); 1295 static DEVICE_ATTR(caps_text, 0444, omapfb_show_caps_text, NULL); 1296 1297 /* panel sysfs entries */ 1298 static ssize_t omapfb_show_panel_name(struct device *dev, 1299 struct device_attribute *attr, char *buf) 1300 { 1301 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1302 1303 return sysfs_emit(buf, "%s\n", fbdev->panel->name); 1304 } 1305 1306 static ssize_t omapfb_show_bklight_level(struct device *dev, 1307 struct device_attribute *attr, 1308 char *buf) 1309 { 1310 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1311 int r; 1312 1313 if (fbdev->panel->get_bklight_level) { 1314 r = sysfs_emit(buf, "%d\n", 1315 fbdev->panel->get_bklight_level(fbdev->panel)); 1316 } else 1317 r = -ENODEV; 1318 return r; 1319 } 1320 1321 static ssize_t omapfb_store_bklight_level(struct device *dev, 1322 struct device_attribute *attr, 1323 const char *buf, size_t size) 1324 { 1325 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1326 int r; 1327 1328 if (fbdev->panel->set_bklight_level) { 1329 unsigned int level; 1330 1331 if (sscanf(buf, "%10d", &level) == 1) { 1332 r = fbdev->panel->set_bklight_level(fbdev->panel, 1333 level); 1334 } else 1335 r = -EINVAL; 1336 } else 1337 r = -ENODEV; 1338 return r ? r : size; 1339 } 1340 1341 static ssize_t omapfb_show_bklight_max(struct device *dev, 1342 struct device_attribute *attr, char *buf) 1343 { 1344 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1345 int r; 1346 1347 if (fbdev->panel->get_bklight_level) { 1348 r = sysfs_emit(buf, "%d\n", 1349 fbdev->panel->get_bklight_max(fbdev->panel)); 1350 } else 1351 r = -ENODEV; 1352 return r; 1353 } 1354 1355 static struct device_attribute dev_attr_panel_name = 1356 __ATTR(name, 0444, omapfb_show_panel_name, NULL); 1357 static DEVICE_ATTR(backlight_level, 0664, 1358 omapfb_show_bklight_level, omapfb_store_bklight_level); 1359 static DEVICE_ATTR(backlight_max, 0444, omapfb_show_bklight_max, NULL); 1360 1361 static struct attribute *panel_attrs[] = { 1362 &dev_attr_panel_name.attr, 1363 &dev_attr_backlight_level.attr, 1364 &dev_attr_backlight_max.attr, 1365 NULL, 1366 }; 1367 1368 static const struct attribute_group panel_attr_grp = { 1369 .name = "panel", 1370 .attrs = panel_attrs, 1371 }; 1372 1373 /* ctrl sysfs entries */ 1374 static ssize_t omapfb_show_ctrl_name(struct device *dev, 1375 struct device_attribute *attr, char *buf) 1376 { 1377 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1378 1379 return sysfs_emit(buf, "%s\n", fbdev->ctrl->name); 1380 } 1381 1382 static struct device_attribute dev_attr_ctrl_name = 1383 __ATTR(name, 0444, omapfb_show_ctrl_name, NULL); 1384 1385 static struct attribute *ctrl_attrs[] = { 1386 &dev_attr_ctrl_name.attr, 1387 NULL, 1388 }; 1389 1390 static const struct attribute_group ctrl_attr_grp = { 1391 .name = "ctrl", 1392 .attrs = ctrl_attrs, 1393 }; 1394 1395 static int omapfb_register_sysfs(struct omapfb_device *fbdev) 1396 { 1397 int r; 1398 1399 if ((r = device_create_file(fbdev->dev, &dev_attr_caps_num))) 1400 goto fail0; 1401 1402 if ((r = device_create_file(fbdev->dev, &dev_attr_caps_text))) 1403 goto fail1; 1404 1405 if ((r = sysfs_create_group(&fbdev->dev->kobj, &panel_attr_grp))) 1406 goto fail2; 1407 1408 if ((r = sysfs_create_group(&fbdev->dev->kobj, &ctrl_attr_grp))) 1409 goto fail3; 1410 1411 return 0; 1412 fail3: 1413 sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp); 1414 fail2: 1415 device_remove_file(fbdev->dev, &dev_attr_caps_text); 1416 fail1: 1417 device_remove_file(fbdev->dev, &dev_attr_caps_num); 1418 fail0: 1419 dev_err(fbdev->dev, "unable to register sysfs interface\n"); 1420 return r; 1421 } 1422 1423 static void omapfb_unregister_sysfs(struct omapfb_device *fbdev) 1424 { 1425 sysfs_remove_group(&fbdev->dev->kobj, &ctrl_attr_grp); 1426 sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp); 1427 device_remove_file(fbdev->dev, &dev_attr_caps_num); 1428 device_remove_file(fbdev->dev, &dev_attr_caps_text); 1429 } 1430 1431 /* 1432 * --------------------------------------------------------------------------- 1433 * LDM callbacks 1434 * --------------------------------------------------------------------------- 1435 */ 1436 /* Initialize system fb_info object and set the default video mode. 1437 * The frame buffer memory already allocated by lcddma_init 1438 */ 1439 static int fbinfo_init(struct omapfb_device *fbdev, struct fb_info *info) 1440 { 1441 struct fb_var_screeninfo *var = &info->var; 1442 struct fb_fix_screeninfo *fix = &info->fix; 1443 int r = 0; 1444 1445 info->fbops = &omapfb_ops; 1446 1447 strscpy(fix->id, MODULE_NAME, sizeof(fix->id)); 1448 1449 info->pseudo_palette = fbdev->pseudo_palette; 1450 1451 var->accel_flags = def_accel ? FB_ACCELF_TEXT : 0; 1452 var->xres = def_vxres; 1453 var->yres = def_vyres; 1454 var->xres_virtual = def_vxres; 1455 var->yres_virtual = def_vyres; 1456 var->rotate = def_rotate; 1457 var->bits_per_pixel = fbdev->panel->bpp; 1458 1459 set_fb_var(info, var); 1460 set_fb_fix(info, 1); 1461 1462 r = fb_alloc_cmap(&info->cmap, 16, 0); 1463 if (r != 0) 1464 dev_err(fbdev->dev, "unable to allocate color map memory\n"); 1465 1466 return r; 1467 } 1468 1469 /* Release the fb_info object */ 1470 static void fbinfo_cleanup(struct omapfb_device *fbdev, struct fb_info *fbi) 1471 { 1472 fb_dealloc_cmap(&fbi->cmap); 1473 } 1474 1475 static void planes_cleanup(struct omapfb_device *fbdev) 1476 { 1477 int i; 1478 1479 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { 1480 if (fbdev->fb_info[i] == NULL) 1481 break; 1482 fbinfo_cleanup(fbdev, fbdev->fb_info[i]); 1483 framebuffer_release(fbdev->fb_info[i]); 1484 } 1485 } 1486 1487 static int planes_init(struct omapfb_device *fbdev) 1488 { 1489 struct fb_info *fbi; 1490 int i; 1491 int r; 1492 1493 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { 1494 struct omapfb_plane_struct *plane; 1495 fbi = framebuffer_alloc(sizeof(struct omapfb_plane_struct), 1496 fbdev->dev); 1497 if (fbi == NULL) { 1498 planes_cleanup(fbdev); 1499 return -ENOMEM; 1500 } 1501 plane = fbi->par; 1502 plane->idx = i; 1503 plane->fbdev = fbdev; 1504 plane->info.mirror = def_mirror; 1505 fbdev->fb_info[i] = fbi; 1506 1507 if ((r = fbinfo_init(fbdev, fbi)) < 0) { 1508 framebuffer_release(fbi); 1509 planes_cleanup(fbdev); 1510 return r; 1511 } 1512 plane->info.out_width = fbi->var.xres; 1513 plane->info.out_height = fbi->var.yres; 1514 } 1515 return 0; 1516 } 1517 1518 /* 1519 * Free driver resources. Can be called to rollback an aborted initialization 1520 * sequence. 1521 */ 1522 static void omapfb_free_resources(struct omapfb_device *fbdev, int state) 1523 { 1524 int i; 1525 1526 switch (state) { 1527 case OMAPFB_ACTIVE: 1528 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) 1529 unregister_framebuffer(fbdev->fb_info[i]); 1530 fallthrough; 1531 case 7: 1532 omapfb_unregister_sysfs(fbdev); 1533 fallthrough; 1534 case 6: 1535 if (fbdev->panel->disable) 1536 fbdev->panel->disable(fbdev->panel); 1537 fallthrough; 1538 case 5: 1539 omapfb_set_update_mode(fbdev, OMAPFB_UPDATE_DISABLED); 1540 fallthrough; 1541 case 4: 1542 planes_cleanup(fbdev); 1543 fallthrough; 1544 case 3: 1545 ctrl_cleanup(fbdev); 1546 fallthrough; 1547 case 2: 1548 if (fbdev->panel->cleanup) 1549 fbdev->panel->cleanup(fbdev->panel); 1550 fallthrough; 1551 case 1: 1552 dev_set_drvdata(fbdev->dev, NULL); 1553 kfree(fbdev); 1554 break; 1555 case 0: 1556 /* nothing to free */ 1557 break; 1558 default: 1559 BUG(); 1560 } 1561 } 1562 1563 static int omapfb_find_ctrl(struct omapfb_device *fbdev) 1564 { 1565 struct omapfb_platform_data *conf; 1566 char name[17]; 1567 int i; 1568 1569 conf = dev_get_platdata(fbdev->dev); 1570 1571 fbdev->ctrl = NULL; 1572 1573 strscpy(name, conf->lcd.ctrl_name, sizeof(name)); 1574 1575 if (strcmp(name, "internal") == 0) { 1576 fbdev->ctrl = fbdev->int_ctrl; 1577 return 0; 1578 } 1579 1580 for (i = 0; i < ARRAY_SIZE(ctrls); i++) { 1581 dev_dbg(fbdev->dev, "ctrl %s\n", ctrls[i]->name); 1582 if (strcmp(ctrls[i]->name, name) == 0) { 1583 fbdev->ctrl = ctrls[i]; 1584 break; 1585 } 1586 } 1587 1588 if (fbdev->ctrl == NULL) { 1589 dev_dbg(fbdev->dev, "ctrl %s not supported\n", name); 1590 return -1; 1591 } 1592 1593 return 0; 1594 } 1595 1596 /* 1597 * Called by LDM binding to probe and attach a new device. 1598 * Initialization sequence: 1599 * 1. allocate system omapfb_device structure 1600 * 2. select controller type according to platform configuration 1601 * init LCD panel 1602 * 3. init LCD controller and LCD DMA 1603 * 4. init system fb_info structure for all planes 1604 * 5. setup video mode for first plane and enable it 1605 * 6. enable LCD panel 1606 * 7. register sysfs attributes 1607 * OMAPFB_ACTIVE: register system fb_info structure for all planes 1608 */ 1609 static int omapfb_do_probe(struct platform_device *pdev, 1610 struct lcd_panel *panel) 1611 { 1612 struct omapfb_device *fbdev = NULL; 1613 int init_state; 1614 unsigned long phz, hhz, vhz; 1615 unsigned long vram; 1616 int i; 1617 int r = 0; 1618 1619 init_state = 0; 1620 1621 if (pdev->num_resources != 2) { 1622 dev_err(&pdev->dev, "probed for an unknown device\n"); 1623 r = -ENODEV; 1624 goto cleanup; 1625 } 1626 1627 if (dev_get_platdata(&pdev->dev) == NULL) { 1628 dev_err(&pdev->dev, "missing platform data\n"); 1629 r = -ENOENT; 1630 goto cleanup; 1631 } 1632 1633 fbdev = kzalloc_obj(*fbdev, GFP_KERNEL); 1634 if (fbdev == NULL) { 1635 dev_err(&pdev->dev, 1636 "unable to allocate memory for device info\n"); 1637 r = -ENOMEM; 1638 goto cleanup; 1639 } 1640 1641 r = platform_get_irq(pdev, 0); 1642 if (r < 0) 1643 goto cleanup; 1644 fbdev->int_irq = r; 1645 1646 r = platform_get_irq(pdev, 1); 1647 if (r < 0) 1648 goto cleanup; 1649 fbdev->ext_irq = r; 1650 1651 init_state++; 1652 1653 fbdev->dev = &pdev->dev; 1654 fbdev->panel = panel; 1655 fbdev->dssdev = &omapdss_device; 1656 platform_set_drvdata(pdev, fbdev); 1657 1658 mutex_init(&fbdev->rqueue_mutex); 1659 1660 fbdev->int_ctrl = &omap1_int_ctrl; 1661 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL 1662 fbdev->ext_if = &omap1_ext_if; 1663 #endif 1664 if (omapfb_find_ctrl(fbdev) < 0) { 1665 dev_err(fbdev->dev, 1666 "LCD controller not found, board not supported\n"); 1667 r = -ENODEV; 1668 goto cleanup; 1669 } 1670 1671 if (fbdev->panel->init) { 1672 r = fbdev->panel->init(fbdev->panel, fbdev); 1673 if (r) 1674 goto cleanup; 1675 } 1676 1677 pr_info("omapfb: configured for panel %s\n", fbdev->panel->name); 1678 1679 def_vxres = def_vxres ? def_vxres : fbdev->panel->x_res; 1680 def_vyres = def_vyres ? def_vyres : fbdev->panel->y_res; 1681 1682 init_state++; 1683 1684 r = ctrl_init(fbdev); 1685 if (r) 1686 goto cleanup; 1687 if (fbdev->ctrl->mmap != NULL) 1688 omapfb_ops.fb_mmap = omapfb_mmap; 1689 init_state++; 1690 1691 r = planes_init(fbdev); 1692 if (r) 1693 goto cleanup; 1694 init_state++; 1695 1696 #ifdef CONFIG_FB_OMAP_DMA_TUNE 1697 /* Set DMA priority for EMIFF access to highest */ 1698 omap_set_dma_priority(0, OMAP_DMA_PORT_EMIFF, 15); 1699 #endif 1700 1701 r = ctrl_change_mode(fbdev->fb_info[0]); 1702 if (r) { 1703 dev_err(fbdev->dev, "mode setting failed\n"); 1704 goto cleanup; 1705 } 1706 1707 /* GFX plane is enabled by default */ 1708 r = fbdev->ctrl->enable_plane(OMAPFB_PLANE_GFX, 1); 1709 if (r) 1710 goto cleanup; 1711 1712 omapfb_set_update_mode(fbdev, manual_update ? 1713 OMAPFB_MANUAL_UPDATE : OMAPFB_AUTO_UPDATE); 1714 init_state++; 1715 1716 if (fbdev->panel->enable) { 1717 r = fbdev->panel->enable(fbdev->panel); 1718 if (r) 1719 goto cleanup; 1720 } 1721 init_state++; 1722 1723 r = omapfb_register_sysfs(fbdev); 1724 if (r) 1725 goto cleanup; 1726 init_state++; 1727 1728 vram = 0; 1729 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { 1730 r = register_framebuffer(fbdev->fb_info[i]); 1731 if (r != 0) { 1732 dev_err(fbdev->dev, 1733 "registering framebuffer %d failed\n", i); 1734 goto cleanup; 1735 } 1736 vram += fbdev->mem_desc.region[i].size; 1737 } 1738 1739 fbdev->state = OMAPFB_ACTIVE; 1740 1741 panel = fbdev->panel; 1742 phz = panel->pixel_clock * 1000; 1743 hhz = phz * 10 / (panel->hfp + panel->x_res + panel->hbp + panel->hsw); 1744 vhz = hhz / (panel->vfp + panel->y_res + panel->vbp + panel->vsw); 1745 1746 omapfb_dev = fbdev; 1747 1748 pr_info("omapfb: Framebuffer initialized. Total vram %lu planes %d\n", 1749 vram, fbdev->mem_desc.region_cnt); 1750 pr_info("omapfb: Pixclock %lu kHz hfreq %lu.%lu kHz " 1751 "vfreq %lu.%lu Hz\n", 1752 phz / 1000, hhz / 10000, hhz % 10, vhz / 10, vhz % 10); 1753 1754 return 0; 1755 1756 cleanup: 1757 omapfb_free_resources(fbdev, init_state); 1758 1759 return r; 1760 } 1761 1762 static int omapfb_probe(struct platform_device *pdev) 1763 { 1764 int r; 1765 1766 BUG_ON(fbdev_pdev != NULL); 1767 1768 r = platform_device_register(&omapdss_device); 1769 if (r) { 1770 dev_err(&pdev->dev, "can't register omapdss device\n"); 1771 return r; 1772 } 1773 1774 /* Delay actual initialization until the LCD is registered */ 1775 fbdev_pdev = pdev; 1776 if (fbdev_panel != NULL) 1777 omapfb_do_probe(fbdev_pdev, fbdev_panel); 1778 return 0; 1779 } 1780 1781 void omapfb_register_panel(struct lcd_panel *panel) 1782 { 1783 BUG_ON(fbdev_panel != NULL); 1784 1785 fbdev_panel = panel; 1786 if (fbdev_pdev != NULL) 1787 omapfb_do_probe(fbdev_pdev, fbdev_panel); 1788 } 1789 EXPORT_SYMBOL_GPL(omapfb_register_panel); 1790 1791 /* Called when the device is being detached from the driver */ 1792 static void omapfb_remove(struct platform_device *pdev) 1793 { 1794 struct omapfb_device *fbdev = platform_get_drvdata(pdev); 1795 enum omapfb_state saved_state = fbdev->state; 1796 1797 /* FIXME: wait till completion of pending events */ 1798 1799 fbdev->state = OMAPFB_DISABLED; 1800 omapfb_free_resources(fbdev, saved_state); 1801 1802 platform_device_unregister(&omapdss_device); 1803 fbdev->dssdev = NULL; 1804 } 1805 1806 /* PM suspend */ 1807 static int omapfb_suspend(struct platform_device *pdev, pm_message_t mesg) 1808 { 1809 struct omapfb_device *fbdev = platform_get_drvdata(pdev); 1810 1811 if (fbdev != NULL) 1812 omapfb_blank(FB_BLANK_POWERDOWN, fbdev->fb_info[0]); 1813 return 0; 1814 } 1815 1816 /* PM resume */ 1817 static int omapfb_resume(struct platform_device *pdev) 1818 { 1819 struct omapfb_device *fbdev = platform_get_drvdata(pdev); 1820 1821 if (fbdev != NULL) 1822 omapfb_blank(FB_BLANK_UNBLANK, fbdev->fb_info[0]); 1823 return 0; 1824 } 1825 1826 static struct platform_driver omapfb_driver = { 1827 .probe = omapfb_probe, 1828 .remove = omapfb_remove, 1829 .suspend = omapfb_suspend, 1830 .resume = omapfb_resume, 1831 .driver = { 1832 .name = MODULE_NAME, 1833 }, 1834 }; 1835 1836 #ifndef MODULE 1837 1838 /* Process kernel command line parameters */ 1839 static int __init omapfb_setup(char *options) 1840 { 1841 char *this_opt = NULL; 1842 int r = 0; 1843 1844 pr_debug("omapfb: options %s\n", options); 1845 1846 if (!options || !*options) 1847 return 0; 1848 1849 while (!r && (this_opt = strsep(&options, ",")) != NULL) { 1850 if (!strncmp(this_opt, "accel", 5)) 1851 def_accel = 1; 1852 else if (!strncmp(this_opt, "vram:", 5)) { 1853 unsigned long long vram; 1854 char *suffix; 1855 1856 vram = memparse(this_opt + 5, &suffix); 1857 switch (suffix[0]) { 1858 case '\0': 1859 break; 1860 default: 1861 pr_debug("omapfb: invalid vram suffix %c\n", 1862 suffix[0]); 1863 r = -1; 1864 } 1865 def_vram[def_vram_cnt++] = vram; 1866 } 1867 else if (!strncmp(this_opt, "vxres:", 6)) 1868 def_vxres = simple_strtoul(this_opt + 6, NULL, 0); 1869 else if (!strncmp(this_opt, "vyres:", 6)) 1870 def_vyres = simple_strtoul(this_opt + 6, NULL, 0); 1871 else if (!strncmp(this_opt, "rotate:", 7)) 1872 def_rotate = (simple_strtoul(this_opt + 7, NULL, 0)); 1873 else if (!strncmp(this_opt, "mirror:", 7)) 1874 def_mirror = (simple_strtoul(this_opt + 7, NULL, 0)); 1875 else if (!strncmp(this_opt, "manual_update", 13)) 1876 manual_update = 1; 1877 else { 1878 pr_debug("omapfb: invalid option\n"); 1879 r = -1; 1880 } 1881 } 1882 1883 return r; 1884 } 1885 1886 #endif 1887 1888 /* Register both the driver and the device */ 1889 static int __init omapfb_init(void) 1890 { 1891 #ifndef MODULE 1892 char *option; 1893 1894 if (fb_get_options("omapfb", &option)) 1895 return -ENODEV; 1896 omapfb_setup(option); 1897 #endif 1898 /* Register the driver with LDM */ 1899 if (platform_driver_register(&omapfb_driver)) { 1900 pr_debug("failed to register omapfb driver\n"); 1901 return -ENODEV; 1902 } 1903 1904 return 0; 1905 } 1906 1907 static void __exit omapfb_cleanup(void) 1908 { 1909 platform_driver_unregister(&omapfb_driver); 1910 } 1911 1912 module_param_named(accel, def_accel, uint, 0664); 1913 module_param_array_named(vram, def_vram, ulong, &def_vram_cnt, 0664); 1914 module_param_named(vxres, def_vxres, long, 0664); 1915 module_param_named(vyres, def_vyres, long, 0664); 1916 module_param_named(rotate, def_rotate, uint, 0664); 1917 module_param_named(mirror, def_mirror, uint, 0664); 1918 module_param_named(manual_update, manual_update, bool, 0664); 1919 1920 module_init(omapfb_init); 1921 module_exit(omapfb_cleanup); 1922 1923 MODULE_DESCRIPTION("TI OMAP framebuffer driver"); 1924 MODULE_AUTHOR("Imre Deak <imre.deak@nokia.com>"); 1925 MODULE_LICENSE("GPL"); 1926