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 if (size) { 850 memcpy(new_var, &fbi->var, sizeof(*new_var)); 851 r = set_fb_var(fbi, new_var); 852 if (r < 0) 853 goto out; 854 } 855 } 856 857 if (fbdev->ctrl->sync) 858 fbdev->ctrl->sync(); 859 r = fbdev->ctrl->setup_mem(plane->idx, size, mi->type, &paddr); 860 if (r < 0) { 861 /* Revert changes. */ 862 rg->size = old_size; 863 rg->type = old_type; 864 goto out; 865 } 866 rg->paddr = paddr; 867 868 if (old_size != size) { 869 if (size) { 870 memcpy(&fbi->var, new_var, sizeof(fbi->var)); 871 set_fb_fix(fbi, 0); 872 } else { 873 /* 874 * Set these explicitly to indicate that the 875 * plane memory is dealloce'd, the other 876 * screen parameters in var / fix are invalid. 877 */ 878 mutex_lock(&fbi->mm_lock); 879 fbi->fix.smem_start = 0; 880 fbi->fix.smem_len = 0; 881 mutex_unlock(&fbi->mm_lock); 882 } 883 } 884 } 885 out: 886 omapfb_rqueue_unlock(fbdev); 887 888 return r; 889 } 890 891 static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi) 892 { 893 struct omapfb_plane_struct *plane = fbi->par; 894 struct omapfb_device *fbdev = plane->fbdev; 895 struct omapfb_mem_region *rg; 896 897 rg = &fbdev->mem_desc.region[plane->idx]; 898 memset(mi, 0, sizeof(*mi)); 899 mi->size = rg->size; 900 mi->type = rg->type; 901 902 return 0; 903 } 904 905 static int omapfb_set_color_key(struct omapfb_device *fbdev, 906 struct omapfb_color_key *ck) 907 { 908 int r; 909 910 if (!fbdev->ctrl->set_color_key) 911 return -ENODEV; 912 913 omapfb_rqueue_lock(fbdev); 914 r = fbdev->ctrl->set_color_key(ck); 915 omapfb_rqueue_unlock(fbdev); 916 917 return r; 918 } 919 920 static int omapfb_get_color_key(struct omapfb_device *fbdev, 921 struct omapfb_color_key *ck) 922 { 923 int r; 924 925 if (!fbdev->ctrl->get_color_key) 926 return -ENODEV; 927 928 omapfb_rqueue_lock(fbdev); 929 r = fbdev->ctrl->get_color_key(ck); 930 omapfb_rqueue_unlock(fbdev); 931 932 return r; 933 } 934 935 static struct blocking_notifier_head omapfb_client_list[OMAPFB_PLANE_NUM]; 936 static int notifier_inited; 937 938 static void omapfb_init_notifier(void) 939 { 940 int i; 941 942 for (i = 0; i < OMAPFB_PLANE_NUM; i++) 943 BLOCKING_INIT_NOTIFIER_HEAD(&omapfb_client_list[i]); 944 } 945 946 int omapfb_register_client(struct omapfb_notifier_block *omapfb_nb, 947 omapfb_notifier_callback_t callback, 948 void *callback_data) 949 { 950 int r; 951 952 if ((unsigned)omapfb_nb->plane_idx >= OMAPFB_PLANE_NUM) 953 return -EINVAL; 954 955 if (!notifier_inited) { 956 omapfb_init_notifier(); 957 notifier_inited = 1; 958 } 959 960 omapfb_nb->nb.notifier_call = (int (*)(struct notifier_block *, 961 unsigned long, void *))callback; 962 omapfb_nb->data = callback_data; 963 r = blocking_notifier_chain_register( 964 &omapfb_client_list[omapfb_nb->plane_idx], 965 &omapfb_nb->nb); 966 if (r) 967 return r; 968 if (omapfb_dev != NULL && 969 omapfb_dev->ctrl && omapfb_dev->ctrl->bind_client) { 970 omapfb_dev->ctrl->bind_client(omapfb_nb); 971 } 972 973 return 0; 974 } 975 EXPORT_SYMBOL(omapfb_register_client); 976 977 int omapfb_unregister_client(struct omapfb_notifier_block *omapfb_nb) 978 { 979 return blocking_notifier_chain_unregister( 980 &omapfb_client_list[omapfb_nb->plane_idx], &omapfb_nb->nb); 981 } 982 EXPORT_SYMBOL(omapfb_unregister_client); 983 984 void omapfb_notify_clients(struct omapfb_device *fbdev, unsigned long event) 985 { 986 int i; 987 988 if (!notifier_inited) 989 /* no client registered yet */ 990 return; 991 992 for (i = 0; i < OMAPFB_PLANE_NUM; i++) 993 blocking_notifier_call_chain(&omapfb_client_list[i], event, 994 fbdev->fb_info[i]); 995 } 996 EXPORT_SYMBOL(omapfb_notify_clients); 997 998 static int omapfb_set_update_mode(struct omapfb_device *fbdev, 999 enum omapfb_update_mode mode) 1000 { 1001 int r; 1002 1003 omapfb_rqueue_lock(fbdev); 1004 r = fbdev->ctrl->set_update_mode(mode); 1005 omapfb_rqueue_unlock(fbdev); 1006 1007 return r; 1008 } 1009 1010 static enum omapfb_update_mode omapfb_get_update_mode(struct omapfb_device *fbdev) 1011 { 1012 int r; 1013 1014 omapfb_rqueue_lock(fbdev); 1015 r = fbdev->ctrl->get_update_mode(); 1016 omapfb_rqueue_unlock(fbdev); 1017 1018 return r; 1019 } 1020 1021 static void omapfb_get_caps(struct omapfb_device *fbdev, int plane, 1022 struct omapfb_caps *caps) 1023 { 1024 memset(caps, 0, sizeof(*caps)); 1025 fbdev->ctrl->get_caps(plane, caps); 1026 if (fbdev->panel->get_caps) 1027 caps->ctrl |= fbdev->panel->get_caps(fbdev->panel); 1028 } 1029 1030 /* For lcd testing */ 1031 void omapfb_write_first_pixel(struct omapfb_device *fbdev, u16 pixval) 1032 { 1033 omapfb_rqueue_lock(fbdev); 1034 *(u16 *)fbdev->mem_desc.region[0].vaddr = pixval; 1035 if (fbdev->ctrl->get_update_mode() == OMAPFB_MANUAL_UPDATE) { 1036 struct omapfb_update_window win; 1037 1038 memset(&win, 0, sizeof(win)); 1039 win.width = 2; 1040 win.height = 2; 1041 win.out_width = 2; 1042 win.out_height = 2; 1043 fbdev->ctrl->update_window(fbdev->fb_info[0], &win, NULL, NULL); 1044 } 1045 omapfb_rqueue_unlock(fbdev); 1046 } 1047 EXPORT_SYMBOL(omapfb_write_first_pixel); 1048 1049 /* 1050 * Ioctl interface. Part of the kernel mode frame buffer API is duplicated 1051 * here to be accessible by user mode code. 1052 */ 1053 static int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, 1054 unsigned long arg) 1055 { 1056 struct omapfb_plane_struct *plane = fbi->par; 1057 struct omapfb_device *fbdev = plane->fbdev; 1058 const struct fb_ops *ops = fbi->fbops; 1059 union { 1060 struct omapfb_update_window update_window; 1061 struct omapfb_plane_info plane_info; 1062 struct omapfb_mem_info mem_info; 1063 struct omapfb_color_key color_key; 1064 enum omapfb_update_mode update_mode; 1065 struct omapfb_caps caps; 1066 unsigned int mirror; 1067 int plane_out; 1068 int enable_plane; 1069 } p; 1070 int r = 0; 1071 1072 BUG_ON(!ops); 1073 switch (cmd) { 1074 case OMAPFB_MIRROR: 1075 if (get_user(p.mirror, (int __user *)arg)) 1076 r = -EFAULT; 1077 else 1078 omapfb_mirror(fbi, p.mirror); 1079 break; 1080 case OMAPFB_SYNC_GFX: 1081 omapfb_sync(fbi); 1082 break; 1083 case OMAPFB_VSYNC: 1084 break; 1085 case OMAPFB_SET_UPDATE_MODE: 1086 if (get_user(p.update_mode, (int __user *)arg)) 1087 r = -EFAULT; 1088 else 1089 r = omapfb_set_update_mode(fbdev, p.update_mode); 1090 break; 1091 case OMAPFB_GET_UPDATE_MODE: 1092 p.update_mode = omapfb_get_update_mode(fbdev); 1093 if (put_user(p.update_mode, 1094 (enum omapfb_update_mode __user *)arg)) 1095 r = -EFAULT; 1096 break; 1097 case OMAPFB_UPDATE_WINDOW_OLD: 1098 if (copy_from_user(&p.update_window, (void __user *)arg, 1099 sizeof(struct omapfb_update_window_old))) 1100 r = -EFAULT; 1101 else { 1102 struct omapfb_update_window *u = &p.update_window; 1103 u->out_x = u->x; 1104 u->out_y = u->y; 1105 u->out_width = u->width; 1106 u->out_height = u->height; 1107 memset(u->reserved, 0, sizeof(u->reserved)); 1108 r = omapfb_update_win(fbi, u); 1109 } 1110 break; 1111 case OMAPFB_UPDATE_WINDOW: 1112 if (copy_from_user(&p.update_window, (void __user *)arg, 1113 sizeof(p.update_window))) 1114 r = -EFAULT; 1115 else 1116 r = omapfb_update_win(fbi, &p.update_window); 1117 break; 1118 case OMAPFB_SETUP_PLANE: 1119 if (copy_from_user(&p.plane_info, (void __user *)arg, 1120 sizeof(p.plane_info))) 1121 r = -EFAULT; 1122 else 1123 r = omapfb_setup_plane(fbi, &p.plane_info); 1124 break; 1125 case OMAPFB_QUERY_PLANE: 1126 if ((r = omapfb_query_plane(fbi, &p.plane_info)) < 0) 1127 break; 1128 if (copy_to_user((void __user *)arg, &p.plane_info, 1129 sizeof(p.plane_info))) 1130 r = -EFAULT; 1131 break; 1132 case OMAPFB_SETUP_MEM: 1133 if (copy_from_user(&p.mem_info, (void __user *)arg, 1134 sizeof(p.mem_info))) 1135 r = -EFAULT; 1136 else 1137 r = omapfb_setup_mem(fbi, &p.mem_info); 1138 break; 1139 case OMAPFB_QUERY_MEM: 1140 if ((r = omapfb_query_mem(fbi, &p.mem_info)) < 0) 1141 break; 1142 if (copy_to_user((void __user *)arg, &p.mem_info, 1143 sizeof(p.mem_info))) 1144 r = -EFAULT; 1145 break; 1146 case OMAPFB_SET_COLOR_KEY: 1147 if (copy_from_user(&p.color_key, (void __user *)arg, 1148 sizeof(p.color_key))) 1149 r = -EFAULT; 1150 else 1151 r = omapfb_set_color_key(fbdev, &p.color_key); 1152 break; 1153 case OMAPFB_GET_COLOR_KEY: 1154 if ((r = omapfb_get_color_key(fbdev, &p.color_key)) < 0) 1155 break; 1156 if (copy_to_user((void __user *)arg, &p.color_key, 1157 sizeof(p.color_key))) 1158 r = -EFAULT; 1159 break; 1160 case OMAPFB_GET_CAPS: 1161 omapfb_get_caps(fbdev, plane->idx, &p.caps); 1162 if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps))) 1163 r = -EFAULT; 1164 break; 1165 case OMAPFB_LCD_TEST: 1166 { 1167 int test_num; 1168 1169 if (get_user(test_num, (int __user *)arg)) { 1170 r = -EFAULT; 1171 break; 1172 } 1173 if (!fbdev->panel->run_test) { 1174 r = -EINVAL; 1175 break; 1176 } 1177 r = fbdev->panel->run_test(fbdev->panel, test_num); 1178 break; 1179 } 1180 case OMAPFB_CTRL_TEST: 1181 { 1182 int test_num; 1183 1184 if (get_user(test_num, (int __user *)arg)) { 1185 r = -EFAULT; 1186 break; 1187 } 1188 if (!fbdev->ctrl->run_test) { 1189 r = -EINVAL; 1190 break; 1191 } 1192 r = fbdev->ctrl->run_test(test_num); 1193 break; 1194 } 1195 default: 1196 r = -EINVAL; 1197 } 1198 1199 return r; 1200 } 1201 1202 static int omapfb_mmap(struct fb_info *info, struct vm_area_struct *vma) 1203 { 1204 struct omapfb_plane_struct *plane = info->par; 1205 struct omapfb_device *fbdev = plane->fbdev; 1206 int r; 1207 1208 vma->vm_page_prot = pgprot_decrypted(vma->vm_page_prot); 1209 1210 omapfb_rqueue_lock(fbdev); 1211 r = fbdev->ctrl->mmap(info, vma); 1212 omapfb_rqueue_unlock(fbdev); 1213 1214 return r; 1215 } 1216 1217 /* 1218 * Callback table for the frame buffer framework. Some of these pointers 1219 * will be changed according to the current setting of fb_info->accel_flags. 1220 */ 1221 static struct fb_ops omapfb_ops = { 1222 .owner = THIS_MODULE, 1223 FB_DEFAULT_IOMEM_OPS, 1224 .fb_open = omapfb_open, 1225 .fb_release = omapfb_release, 1226 .fb_setcolreg = omapfb_setcolreg, 1227 .fb_setcmap = omapfb_setcmap, 1228 .fb_blank = omapfb_blank, 1229 .fb_ioctl = omapfb_ioctl, 1230 .fb_check_var = omapfb_check_var, 1231 .fb_set_par = omapfb_set_par, 1232 .fb_pan_display = omapfb_pan_display, 1233 }; 1234 1235 /* 1236 * --------------------------------------------------------------------------- 1237 * Sysfs interface 1238 * --------------------------------------------------------------------------- 1239 */ 1240 /* omapfbX sysfs entries */ 1241 static ssize_t omapfb_show_caps_num(struct device *dev, 1242 struct device_attribute *attr, char *buf) 1243 { 1244 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1245 int plane; 1246 size_t size = 0; 1247 struct omapfb_caps caps; 1248 1249 plane = 0; 1250 while (plane < OMAPFB_PLANE_NUM) { 1251 omapfb_get_caps(fbdev, plane, &caps); 1252 size += sysfs_emit_at(buf, size, 1253 "plane#%d %#010x %#010x %#010x\n", 1254 plane, caps.ctrl, caps.plane_color, caps.wnd_color); 1255 plane++; 1256 } 1257 return size; 1258 } 1259 1260 static ssize_t omapfb_show_caps_text(struct device *dev, 1261 struct device_attribute *attr, char *buf) 1262 { 1263 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1264 int i; 1265 struct omapfb_caps caps; 1266 int plane; 1267 size_t size = 0; 1268 1269 plane = 0; 1270 while (plane < OMAPFB_PLANE_NUM) { 1271 omapfb_get_caps(fbdev, plane, &caps); 1272 size += sysfs_emit_at(buf, size, "plane#%d:\n", plane); 1273 for (i = 0; i < ARRAY_SIZE(ctrl_caps); i++) { 1274 if (ctrl_caps[i].flag & caps.ctrl) 1275 size += sysfs_emit_at(buf, size, 1276 " %s\n", ctrl_caps[i].name); 1277 } 1278 size += sysfs_emit_at(buf, size, " plane colors:\n"); 1279 for (i = 0; i < ARRAY_SIZE(color_caps); i++) { 1280 if (color_caps[i].flag & caps.plane_color) 1281 size += sysfs_emit_at(buf, size, 1282 " %s\n", color_caps[i].name); 1283 } 1284 size += sysfs_emit_at(buf, size, " window colors:\n"); 1285 for (i = 0; i < ARRAY_SIZE(color_caps); i++) { 1286 if (color_caps[i].flag & caps.wnd_color) 1287 size += sysfs_emit_at(buf, size, 1288 " %s\n", color_caps[i].name); 1289 } 1290 1291 plane++; 1292 } 1293 return size; 1294 } 1295 1296 static DEVICE_ATTR(caps_num, 0444, omapfb_show_caps_num, NULL); 1297 static DEVICE_ATTR(caps_text, 0444, omapfb_show_caps_text, NULL); 1298 1299 /* panel sysfs entries */ 1300 static ssize_t omapfb_show_panel_name(struct device *dev, 1301 struct device_attribute *attr, char *buf) 1302 { 1303 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1304 1305 return sysfs_emit(buf, "%s\n", fbdev->panel->name); 1306 } 1307 1308 static ssize_t omapfb_show_bklight_level(struct device *dev, 1309 struct device_attribute *attr, 1310 char *buf) 1311 { 1312 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1313 int r; 1314 1315 if (fbdev->panel->get_bklight_level) { 1316 r = sysfs_emit(buf, "%d\n", 1317 fbdev->panel->get_bklight_level(fbdev->panel)); 1318 } else 1319 r = -ENODEV; 1320 return r; 1321 } 1322 1323 static ssize_t omapfb_store_bklight_level(struct device *dev, 1324 struct device_attribute *attr, 1325 const char *buf, size_t size) 1326 { 1327 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1328 int r; 1329 1330 if (fbdev->panel->set_bklight_level) { 1331 unsigned int level; 1332 1333 if (sscanf(buf, "%10d", &level) == 1) { 1334 r = fbdev->panel->set_bklight_level(fbdev->panel, 1335 level); 1336 } else 1337 r = -EINVAL; 1338 } else 1339 r = -ENODEV; 1340 return r ? r : size; 1341 } 1342 1343 static ssize_t omapfb_show_bklight_max(struct device *dev, 1344 struct device_attribute *attr, char *buf) 1345 { 1346 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1347 int r; 1348 1349 if (fbdev->panel->get_bklight_level) { 1350 r = sysfs_emit(buf, "%d\n", 1351 fbdev->panel->get_bklight_max(fbdev->panel)); 1352 } else 1353 r = -ENODEV; 1354 return r; 1355 } 1356 1357 static struct device_attribute dev_attr_panel_name = 1358 __ATTR(name, 0444, omapfb_show_panel_name, NULL); 1359 static DEVICE_ATTR(backlight_level, 0664, 1360 omapfb_show_bklight_level, omapfb_store_bklight_level); 1361 static DEVICE_ATTR(backlight_max, 0444, omapfb_show_bklight_max, NULL); 1362 1363 static struct attribute *panel_attrs[] = { 1364 &dev_attr_panel_name.attr, 1365 &dev_attr_backlight_level.attr, 1366 &dev_attr_backlight_max.attr, 1367 NULL, 1368 }; 1369 1370 static const struct attribute_group panel_attr_grp = { 1371 .name = "panel", 1372 .attrs = panel_attrs, 1373 }; 1374 1375 /* ctrl sysfs entries */ 1376 static ssize_t omapfb_show_ctrl_name(struct device *dev, 1377 struct device_attribute *attr, char *buf) 1378 { 1379 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1380 1381 return sysfs_emit(buf, "%s\n", fbdev->ctrl->name); 1382 } 1383 1384 static struct device_attribute dev_attr_ctrl_name = 1385 __ATTR(name, 0444, omapfb_show_ctrl_name, NULL); 1386 1387 static struct attribute *ctrl_attrs[] = { 1388 &dev_attr_ctrl_name.attr, 1389 NULL, 1390 }; 1391 1392 static const struct attribute_group ctrl_attr_grp = { 1393 .name = "ctrl", 1394 .attrs = ctrl_attrs, 1395 }; 1396 1397 static int omapfb_register_sysfs(struct omapfb_device *fbdev) 1398 { 1399 int r; 1400 1401 if ((r = device_create_file(fbdev->dev, &dev_attr_caps_num))) 1402 goto fail0; 1403 1404 if ((r = device_create_file(fbdev->dev, &dev_attr_caps_text))) 1405 goto fail1; 1406 1407 if ((r = sysfs_create_group(&fbdev->dev->kobj, &panel_attr_grp))) 1408 goto fail2; 1409 1410 if ((r = sysfs_create_group(&fbdev->dev->kobj, &ctrl_attr_grp))) 1411 goto fail3; 1412 1413 return 0; 1414 fail3: 1415 sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp); 1416 fail2: 1417 device_remove_file(fbdev->dev, &dev_attr_caps_text); 1418 fail1: 1419 device_remove_file(fbdev->dev, &dev_attr_caps_num); 1420 fail0: 1421 dev_err(fbdev->dev, "unable to register sysfs interface\n"); 1422 return r; 1423 } 1424 1425 static void omapfb_unregister_sysfs(struct omapfb_device *fbdev) 1426 { 1427 sysfs_remove_group(&fbdev->dev->kobj, &ctrl_attr_grp); 1428 sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp); 1429 device_remove_file(fbdev->dev, &dev_attr_caps_num); 1430 device_remove_file(fbdev->dev, &dev_attr_caps_text); 1431 } 1432 1433 /* 1434 * --------------------------------------------------------------------------- 1435 * LDM callbacks 1436 * --------------------------------------------------------------------------- 1437 */ 1438 /* Initialize system fb_info object and set the default video mode. 1439 * The frame buffer memory already allocated by lcddma_init 1440 */ 1441 static int fbinfo_init(struct omapfb_device *fbdev, struct fb_info *info) 1442 { 1443 struct fb_var_screeninfo *var = &info->var; 1444 struct fb_fix_screeninfo *fix = &info->fix; 1445 int r = 0; 1446 1447 info->fbops = &omapfb_ops; 1448 1449 strscpy(fix->id, MODULE_NAME, sizeof(fix->id)); 1450 1451 info->pseudo_palette = fbdev->pseudo_palette; 1452 1453 var->accel_flags = def_accel ? FB_ACCELF_TEXT : 0; 1454 var->xres = def_vxres; 1455 var->yres = def_vyres; 1456 var->xres_virtual = def_vxres; 1457 var->yres_virtual = def_vyres; 1458 var->rotate = def_rotate; 1459 var->bits_per_pixel = fbdev->panel->bpp; 1460 1461 set_fb_var(info, var); 1462 set_fb_fix(info, 1); 1463 1464 r = fb_alloc_cmap(&info->cmap, 16, 0); 1465 if (r != 0) 1466 dev_err(fbdev->dev, "unable to allocate color map memory\n"); 1467 1468 return r; 1469 } 1470 1471 /* Release the fb_info object */ 1472 static void fbinfo_cleanup(struct omapfb_device *fbdev, struct fb_info *fbi) 1473 { 1474 fb_dealloc_cmap(&fbi->cmap); 1475 } 1476 1477 static void planes_cleanup(struct omapfb_device *fbdev) 1478 { 1479 int i; 1480 1481 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { 1482 if (fbdev->fb_info[i] == NULL) 1483 break; 1484 fbinfo_cleanup(fbdev, fbdev->fb_info[i]); 1485 framebuffer_release(fbdev->fb_info[i]); 1486 } 1487 } 1488 1489 static int planes_init(struct omapfb_device *fbdev) 1490 { 1491 struct fb_info *fbi; 1492 int i; 1493 int r; 1494 1495 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { 1496 struct omapfb_plane_struct *plane; 1497 fbi = framebuffer_alloc(sizeof(struct omapfb_plane_struct), 1498 fbdev->dev); 1499 if (fbi == NULL) { 1500 planes_cleanup(fbdev); 1501 return -ENOMEM; 1502 } 1503 plane = fbi->par; 1504 plane->idx = i; 1505 plane->fbdev = fbdev; 1506 plane->info.mirror = def_mirror; 1507 fbdev->fb_info[i] = fbi; 1508 1509 if ((r = fbinfo_init(fbdev, fbi)) < 0) { 1510 framebuffer_release(fbi); 1511 planes_cleanup(fbdev); 1512 return r; 1513 } 1514 plane->info.out_width = fbi->var.xres; 1515 plane->info.out_height = fbi->var.yres; 1516 } 1517 return 0; 1518 } 1519 1520 /* 1521 * Free driver resources. Can be called to rollback an aborted initialization 1522 * sequence. 1523 */ 1524 static void omapfb_free_resources(struct omapfb_device *fbdev, int state) 1525 { 1526 int i; 1527 1528 switch (state) { 1529 case OMAPFB_ACTIVE: 1530 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) 1531 unregister_framebuffer(fbdev->fb_info[i]); 1532 fallthrough; 1533 case 7: 1534 omapfb_unregister_sysfs(fbdev); 1535 fallthrough; 1536 case 6: 1537 if (fbdev->panel->disable) 1538 fbdev->panel->disable(fbdev->panel); 1539 fallthrough; 1540 case 5: 1541 omapfb_set_update_mode(fbdev, OMAPFB_UPDATE_DISABLED); 1542 fallthrough; 1543 case 4: 1544 planes_cleanup(fbdev); 1545 fallthrough; 1546 case 3: 1547 ctrl_cleanup(fbdev); 1548 fallthrough; 1549 case 2: 1550 if (fbdev->panel->cleanup) 1551 fbdev->panel->cleanup(fbdev->panel); 1552 fallthrough; 1553 case 1: 1554 dev_set_drvdata(fbdev->dev, NULL); 1555 kfree(fbdev); 1556 break; 1557 case 0: 1558 /* nothing to free */ 1559 break; 1560 default: 1561 BUG(); 1562 } 1563 } 1564 1565 static int omapfb_find_ctrl(struct omapfb_device *fbdev) 1566 { 1567 struct omapfb_platform_data *conf; 1568 char name[17]; 1569 int i; 1570 1571 conf = dev_get_platdata(fbdev->dev); 1572 1573 fbdev->ctrl = NULL; 1574 1575 strscpy(name, conf->lcd.ctrl_name, sizeof(name)); 1576 1577 if (strcmp(name, "internal") == 0) { 1578 fbdev->ctrl = fbdev->int_ctrl; 1579 return 0; 1580 } 1581 1582 for (i = 0; i < ARRAY_SIZE(ctrls); i++) { 1583 dev_dbg(fbdev->dev, "ctrl %s\n", ctrls[i]->name); 1584 if (strcmp(ctrls[i]->name, name) == 0) { 1585 fbdev->ctrl = ctrls[i]; 1586 break; 1587 } 1588 } 1589 1590 if (fbdev->ctrl == NULL) { 1591 dev_dbg(fbdev->dev, "ctrl %s not supported\n", name); 1592 return -1; 1593 } 1594 1595 return 0; 1596 } 1597 1598 /* 1599 * Called by LDM binding to probe and attach a new device. 1600 * Initialization sequence: 1601 * 1. allocate system omapfb_device structure 1602 * 2. select controller type according to platform configuration 1603 * init LCD panel 1604 * 3. init LCD controller and LCD DMA 1605 * 4. init system fb_info structure for all planes 1606 * 5. setup video mode for first plane and enable it 1607 * 6. enable LCD panel 1608 * 7. register sysfs attributes 1609 * OMAPFB_ACTIVE: register system fb_info structure for all planes 1610 */ 1611 static int omapfb_do_probe(struct platform_device *pdev, 1612 struct lcd_panel *panel) 1613 { 1614 struct omapfb_device *fbdev = NULL; 1615 int init_state; 1616 unsigned long phz, hhz, vhz; 1617 unsigned long vram; 1618 int i; 1619 int r = 0; 1620 1621 init_state = 0; 1622 1623 if (pdev->num_resources != 2) { 1624 dev_err(&pdev->dev, "probed for an unknown device\n"); 1625 r = -ENODEV; 1626 goto cleanup; 1627 } 1628 1629 if (dev_get_platdata(&pdev->dev) == NULL) { 1630 dev_err(&pdev->dev, "missing platform data\n"); 1631 r = -ENOENT; 1632 goto cleanup; 1633 } 1634 1635 fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL); 1636 if (fbdev == NULL) { 1637 dev_err(&pdev->dev, 1638 "unable to allocate memory for device info\n"); 1639 r = -ENOMEM; 1640 goto cleanup; 1641 } 1642 1643 r = platform_get_irq(pdev, 0); 1644 if (r < 0) 1645 goto cleanup; 1646 fbdev->int_irq = r; 1647 1648 r = platform_get_irq(pdev, 1); 1649 if (r < 0) 1650 goto cleanup; 1651 fbdev->ext_irq = r; 1652 1653 init_state++; 1654 1655 fbdev->dev = &pdev->dev; 1656 fbdev->panel = panel; 1657 fbdev->dssdev = &omapdss_device; 1658 platform_set_drvdata(pdev, fbdev); 1659 1660 mutex_init(&fbdev->rqueue_mutex); 1661 1662 fbdev->int_ctrl = &omap1_int_ctrl; 1663 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL 1664 fbdev->ext_if = &omap1_ext_if; 1665 #endif 1666 if (omapfb_find_ctrl(fbdev) < 0) { 1667 dev_err(fbdev->dev, 1668 "LCD controller not found, board not supported\n"); 1669 r = -ENODEV; 1670 goto cleanup; 1671 } 1672 1673 if (fbdev->panel->init) { 1674 r = fbdev->panel->init(fbdev->panel, fbdev); 1675 if (r) 1676 goto cleanup; 1677 } 1678 1679 pr_info("omapfb: configured for panel %s\n", fbdev->panel->name); 1680 1681 def_vxres = def_vxres ? def_vxres : fbdev->panel->x_res; 1682 def_vyres = def_vyres ? def_vyres : fbdev->panel->y_res; 1683 1684 init_state++; 1685 1686 r = ctrl_init(fbdev); 1687 if (r) 1688 goto cleanup; 1689 if (fbdev->ctrl->mmap != NULL) 1690 omapfb_ops.fb_mmap = omapfb_mmap; 1691 init_state++; 1692 1693 r = planes_init(fbdev); 1694 if (r) 1695 goto cleanup; 1696 init_state++; 1697 1698 #ifdef CONFIG_FB_OMAP_DMA_TUNE 1699 /* Set DMA priority for EMIFF access to highest */ 1700 omap_set_dma_priority(0, OMAP_DMA_PORT_EMIFF, 15); 1701 #endif 1702 1703 r = ctrl_change_mode(fbdev->fb_info[0]); 1704 if (r) { 1705 dev_err(fbdev->dev, "mode setting failed\n"); 1706 goto cleanup; 1707 } 1708 1709 /* GFX plane is enabled by default */ 1710 r = fbdev->ctrl->enable_plane(OMAPFB_PLANE_GFX, 1); 1711 if (r) 1712 goto cleanup; 1713 1714 omapfb_set_update_mode(fbdev, manual_update ? 1715 OMAPFB_MANUAL_UPDATE : OMAPFB_AUTO_UPDATE); 1716 init_state++; 1717 1718 if (fbdev->panel->enable) { 1719 r = fbdev->panel->enable(fbdev->panel); 1720 if (r) 1721 goto cleanup; 1722 } 1723 init_state++; 1724 1725 r = omapfb_register_sysfs(fbdev); 1726 if (r) 1727 goto cleanup; 1728 init_state++; 1729 1730 vram = 0; 1731 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { 1732 r = register_framebuffer(fbdev->fb_info[i]); 1733 if (r != 0) { 1734 dev_err(fbdev->dev, 1735 "registering framebuffer %d failed\n", i); 1736 goto cleanup; 1737 } 1738 vram += fbdev->mem_desc.region[i].size; 1739 } 1740 1741 fbdev->state = OMAPFB_ACTIVE; 1742 1743 panel = fbdev->panel; 1744 phz = panel->pixel_clock * 1000; 1745 hhz = phz * 10 / (panel->hfp + panel->x_res + panel->hbp + panel->hsw); 1746 vhz = hhz / (panel->vfp + panel->y_res + panel->vbp + panel->vsw); 1747 1748 omapfb_dev = fbdev; 1749 1750 pr_info("omapfb: Framebuffer initialized. Total vram %lu planes %d\n", 1751 vram, fbdev->mem_desc.region_cnt); 1752 pr_info("omapfb: Pixclock %lu kHz hfreq %lu.%lu kHz " 1753 "vfreq %lu.%lu Hz\n", 1754 phz / 1000, hhz / 10000, hhz % 10, vhz / 10, vhz % 10); 1755 1756 return 0; 1757 1758 cleanup: 1759 omapfb_free_resources(fbdev, init_state); 1760 1761 return r; 1762 } 1763 1764 static int omapfb_probe(struct platform_device *pdev) 1765 { 1766 int r; 1767 1768 BUG_ON(fbdev_pdev != NULL); 1769 1770 r = platform_device_register(&omapdss_device); 1771 if (r) { 1772 dev_err(&pdev->dev, "can't register omapdss device\n"); 1773 return r; 1774 } 1775 1776 /* Delay actual initialization until the LCD is registered */ 1777 fbdev_pdev = pdev; 1778 if (fbdev_panel != NULL) 1779 omapfb_do_probe(fbdev_pdev, fbdev_panel); 1780 return 0; 1781 } 1782 1783 void omapfb_register_panel(struct lcd_panel *panel) 1784 { 1785 BUG_ON(fbdev_panel != NULL); 1786 1787 fbdev_panel = panel; 1788 if (fbdev_pdev != NULL) 1789 omapfb_do_probe(fbdev_pdev, fbdev_panel); 1790 } 1791 EXPORT_SYMBOL_GPL(omapfb_register_panel); 1792 1793 /* Called when the device is being detached from the driver */ 1794 static void omapfb_remove(struct platform_device *pdev) 1795 { 1796 struct omapfb_device *fbdev = platform_get_drvdata(pdev); 1797 enum omapfb_state saved_state = fbdev->state; 1798 1799 /* FIXME: wait till completion of pending events */ 1800 1801 fbdev->state = OMAPFB_DISABLED; 1802 omapfb_free_resources(fbdev, saved_state); 1803 1804 platform_device_unregister(&omapdss_device); 1805 fbdev->dssdev = NULL; 1806 } 1807 1808 /* PM suspend */ 1809 static int omapfb_suspend(struct platform_device *pdev, pm_message_t mesg) 1810 { 1811 struct omapfb_device *fbdev = platform_get_drvdata(pdev); 1812 1813 if (fbdev != NULL) 1814 omapfb_blank(FB_BLANK_POWERDOWN, fbdev->fb_info[0]); 1815 return 0; 1816 } 1817 1818 /* PM resume */ 1819 static int omapfb_resume(struct platform_device *pdev) 1820 { 1821 struct omapfb_device *fbdev = platform_get_drvdata(pdev); 1822 1823 if (fbdev != NULL) 1824 omapfb_blank(FB_BLANK_UNBLANK, fbdev->fb_info[0]); 1825 return 0; 1826 } 1827 1828 static struct platform_driver omapfb_driver = { 1829 .probe = omapfb_probe, 1830 .remove = omapfb_remove, 1831 .suspend = omapfb_suspend, 1832 .resume = omapfb_resume, 1833 .driver = { 1834 .name = MODULE_NAME, 1835 }, 1836 }; 1837 1838 #ifndef MODULE 1839 1840 /* Process kernel command line parameters */ 1841 static int __init omapfb_setup(char *options) 1842 { 1843 char *this_opt = NULL; 1844 int r = 0; 1845 1846 pr_debug("omapfb: options %s\n", options); 1847 1848 if (!options || !*options) 1849 return 0; 1850 1851 while (!r && (this_opt = strsep(&options, ",")) != NULL) { 1852 if (!strncmp(this_opt, "accel", 5)) 1853 def_accel = 1; 1854 else if (!strncmp(this_opt, "vram:", 5)) { 1855 unsigned long long vram; 1856 char *suffix; 1857 1858 vram = memparse(this_opt + 5, &suffix); 1859 switch (suffix[0]) { 1860 case '\0': 1861 break; 1862 default: 1863 pr_debug("omapfb: invalid vram suffix %c\n", 1864 suffix[0]); 1865 r = -1; 1866 } 1867 def_vram[def_vram_cnt++] = vram; 1868 } 1869 else if (!strncmp(this_opt, "vxres:", 6)) 1870 def_vxres = simple_strtoul(this_opt + 6, NULL, 0); 1871 else if (!strncmp(this_opt, "vyres:", 6)) 1872 def_vyres = simple_strtoul(this_opt + 6, NULL, 0); 1873 else if (!strncmp(this_opt, "rotate:", 7)) 1874 def_rotate = (simple_strtoul(this_opt + 7, NULL, 0)); 1875 else if (!strncmp(this_opt, "mirror:", 7)) 1876 def_mirror = (simple_strtoul(this_opt + 7, NULL, 0)); 1877 else if (!strncmp(this_opt, "manual_update", 13)) 1878 manual_update = 1; 1879 else { 1880 pr_debug("omapfb: invalid option\n"); 1881 r = -1; 1882 } 1883 } 1884 1885 return r; 1886 } 1887 1888 #endif 1889 1890 /* Register both the driver and the device */ 1891 static int __init omapfb_init(void) 1892 { 1893 #ifndef MODULE 1894 char *option; 1895 1896 if (fb_get_options("omapfb", &option)) 1897 return -ENODEV; 1898 omapfb_setup(option); 1899 #endif 1900 /* Register the driver with LDM */ 1901 if (platform_driver_register(&omapfb_driver)) { 1902 pr_debug("failed to register omapfb driver\n"); 1903 return -ENODEV; 1904 } 1905 1906 return 0; 1907 } 1908 1909 static void __exit omapfb_cleanup(void) 1910 { 1911 platform_driver_unregister(&omapfb_driver); 1912 } 1913 1914 module_param_named(accel, def_accel, uint, 0664); 1915 module_param_array_named(vram, def_vram, ulong, &def_vram_cnt, 0664); 1916 module_param_named(vxres, def_vxres, long, 0664); 1917 module_param_named(vyres, def_vyres, long, 0664); 1918 module_param_named(rotate, def_rotate, uint, 0664); 1919 module_param_named(mirror, def_mirror, uint, 0664); 1920 module_param_named(manual_update, manual_update, bool, 0664); 1921 1922 module_init(omapfb_init); 1923 module_exit(omapfb_cleanup); 1924 1925 MODULE_DESCRIPTION("TI OMAP framebuffer driver"); 1926 MODULE_AUTHOR("Imre Deak <imre.deak@nokia.com>"); 1927 MODULE_LICENSE("GPL"); 1928