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 #include <linux/platform_device.h> 15 #include <linux/mm.h> 16 #include <linux/slab.h> 17 #include <linux/uaccess.h> 18 #include <linux/module.h> 19 #include <linux/sysfs.h> 20 21 #include <linux/omap-dma.h> 22 23 #include <mach/hardware.h> 24 25 #include "omapfb.h" 26 #include "lcdc.h" 27 28 #define MODULE_NAME "omapfb" 29 30 static unsigned int def_accel; 31 static unsigned long def_vram[OMAPFB_PLANE_NUM]; 32 static unsigned int def_vram_cnt; 33 static unsigned long def_vxres; 34 static unsigned long def_vyres; 35 static unsigned int def_rotate; 36 static unsigned int def_mirror; 37 38 static bool manual_update = IS_BUILTIN(CONFIG_FB_OMAP_MANUAL_UPDATE); 39 40 static struct platform_device *fbdev_pdev; 41 static struct lcd_panel *fbdev_panel; 42 static struct omapfb_device *omapfb_dev; 43 44 struct caps_table_struct { 45 unsigned long flag; 46 const char *name; 47 }; 48 49 static const struct caps_table_struct ctrl_caps[] = { 50 { OMAPFB_CAPS_MANUAL_UPDATE, "manual update" }, 51 { OMAPFB_CAPS_TEARSYNC, "tearing synchronization" }, 52 { OMAPFB_CAPS_PLANE_RELOCATE_MEM, "relocate plane memory" }, 53 { OMAPFB_CAPS_PLANE_SCALE, "scale plane" }, 54 { OMAPFB_CAPS_WINDOW_PIXEL_DOUBLE, "pixel double window" }, 55 { OMAPFB_CAPS_WINDOW_SCALE, "scale window" }, 56 { OMAPFB_CAPS_WINDOW_OVERLAY, "overlay window" }, 57 { OMAPFB_CAPS_WINDOW_ROTATE, "rotate window" }, 58 { OMAPFB_CAPS_SET_BACKLIGHT, "backlight setting" }, 59 }; 60 61 static const struct caps_table_struct color_caps[] = { 62 { 1 << OMAPFB_COLOR_RGB565, "RGB565", }, 63 { 1 << OMAPFB_COLOR_YUV422, "YUV422", }, 64 { 1 << OMAPFB_COLOR_YUV420, "YUV420", }, 65 { 1 << OMAPFB_COLOR_CLUT_8BPP, "CLUT8", }, 66 { 1 << OMAPFB_COLOR_CLUT_4BPP, "CLUT4", }, 67 { 1 << OMAPFB_COLOR_CLUT_2BPP, "CLUT2", }, 68 { 1 << OMAPFB_COLOR_CLUT_1BPP, "CLUT1", }, 69 { 1 << OMAPFB_COLOR_RGB444, "RGB444", }, 70 { 1 << OMAPFB_COLOR_YUY422, "YUY422", }, 71 }; 72 73 static void omapdss_release(struct device *dev) 74 { 75 } 76 77 /* dummy device for clocks */ 78 static struct platform_device omapdss_device = { 79 .name = "omapdss_dss", 80 .id = -1, 81 .dev = { 82 .release = omapdss_release, 83 }, 84 }; 85 86 /* 87 * --------------------------------------------------------------------------- 88 * LCD panel 89 * --------------------------------------------------------------------------- 90 */ 91 extern struct lcd_ctrl hwa742_ctrl; 92 93 static const struct lcd_ctrl *ctrls[] = { 94 &omap1_int_ctrl, 95 96 #ifdef CONFIG_FB_OMAP_LCDC_HWA742 97 &hwa742_ctrl, 98 #endif 99 }; 100 101 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL 102 extern struct lcd_ctrl_extif omap1_ext_if; 103 #endif 104 105 static void omapfb_rqueue_lock(struct omapfb_device *fbdev) 106 { 107 mutex_lock(&fbdev->rqueue_mutex); 108 } 109 110 static void omapfb_rqueue_unlock(struct omapfb_device *fbdev) 111 { 112 mutex_unlock(&fbdev->rqueue_mutex); 113 } 114 115 /* 116 * --------------------------------------------------------------------------- 117 * LCD controller and LCD DMA 118 * --------------------------------------------------------------------------- 119 */ 120 /* 121 * Allocate resources needed for LCD controller and LCD DMA operations. Video 122 * memory is allocated from system memory according to the virtual display 123 * size, except if a bigger memory size is specified explicitly as a kernel 124 * parameter. 125 */ 126 static int ctrl_init(struct omapfb_device *fbdev) 127 { 128 int r; 129 int i; 130 131 /* kernel/module vram parameters override boot tags/board config */ 132 if (def_vram_cnt) { 133 for (i = 0; i < def_vram_cnt; i++) 134 fbdev->mem_desc.region[i].size = 135 PAGE_ALIGN(def_vram[i]); 136 fbdev->mem_desc.region_cnt = i; 137 } 138 139 if (!fbdev->mem_desc.region_cnt) { 140 struct lcd_panel *panel = fbdev->panel; 141 int def_size; 142 int bpp = panel->bpp; 143 144 /* 12 bpp is packed in 16 bits */ 145 if (bpp == 12) 146 bpp = 16; 147 def_size = def_vxres * def_vyres * bpp / 8; 148 fbdev->mem_desc.region_cnt = 1; 149 fbdev->mem_desc.region[0].size = PAGE_ALIGN(def_size); 150 } 151 r = fbdev->ctrl->init(fbdev, 0, &fbdev->mem_desc); 152 if (r < 0) { 153 dev_err(fbdev->dev, "controller initialization failed (%d)\n", 154 r); 155 return r; 156 } 157 158 #ifdef DEBUG 159 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { 160 dev_dbg(fbdev->dev, "region%d phys %08x virt %p size=%lu\n", 161 i, 162 fbdev->mem_desc.region[i].paddr, 163 fbdev->mem_desc.region[i].vaddr, 164 fbdev->mem_desc.region[i].size); 165 } 166 #endif 167 return 0; 168 } 169 170 static void ctrl_cleanup(struct omapfb_device *fbdev) 171 { 172 fbdev->ctrl->cleanup(); 173 } 174 175 /* Must be called with fbdev->rqueue_mutex held. */ 176 static int ctrl_change_mode(struct fb_info *fbi) 177 { 178 int r; 179 unsigned long offset; 180 struct omapfb_plane_struct *plane = fbi->par; 181 struct omapfb_device *fbdev = plane->fbdev; 182 struct fb_var_screeninfo *var = &fbi->var; 183 184 offset = var->yoffset * fbi->fix.line_length + 185 var->xoffset * var->bits_per_pixel / 8; 186 187 if (fbdev->ctrl->sync) 188 fbdev->ctrl->sync(); 189 r = fbdev->ctrl->setup_plane(plane->idx, plane->info.channel_out, 190 offset, var->xres_virtual, 191 plane->info.pos_x, plane->info.pos_y, 192 var->xres, var->yres, plane->color_mode); 193 if (r < 0) 194 return r; 195 196 if (fbdev->ctrl->set_rotate != NULL) { 197 r = fbdev->ctrl->set_rotate(var->rotate); 198 if (r < 0) 199 return r; 200 } 201 202 if (fbdev->ctrl->set_scale != NULL) 203 r = fbdev->ctrl->set_scale(plane->idx, 204 var->xres, var->yres, 205 plane->info.out_width, 206 plane->info.out_height); 207 208 return r; 209 } 210 211 /* 212 * --------------------------------------------------------------------------- 213 * fbdev framework callbacks and the ioctl interface 214 * --------------------------------------------------------------------------- 215 */ 216 /* Called each time the omapfb device is opened */ 217 static int omapfb_open(struct fb_info *info, int user) 218 { 219 return 0; 220 } 221 222 static void omapfb_sync(struct fb_info *info); 223 224 /* Called when the omapfb device is closed. We make sure that any pending 225 * gfx DMA operations are ended, before we return. */ 226 static int omapfb_release(struct fb_info *info, int user) 227 { 228 omapfb_sync(info); 229 return 0; 230 } 231 232 /* Store a single color palette entry into a pseudo palette or the hardware 233 * palette if one is available. For now we support only 16bpp and thus store 234 * the entry only to the pseudo palette. 235 */ 236 static int _setcolreg(struct fb_info *info, u_int regno, u_int red, u_int green, 237 u_int blue, u_int transp, int update_hw_pal) 238 { 239 struct omapfb_plane_struct *plane = info->par; 240 struct omapfb_device *fbdev = plane->fbdev; 241 struct fb_var_screeninfo *var = &info->var; 242 int r = 0; 243 244 switch (plane->color_mode) { 245 case OMAPFB_COLOR_YUV422: 246 case OMAPFB_COLOR_YUV420: 247 case OMAPFB_COLOR_YUY422: 248 r = -EINVAL; 249 break; 250 case OMAPFB_COLOR_CLUT_8BPP: 251 case OMAPFB_COLOR_CLUT_4BPP: 252 case OMAPFB_COLOR_CLUT_2BPP: 253 case OMAPFB_COLOR_CLUT_1BPP: 254 if (fbdev->ctrl->setcolreg) 255 r = fbdev->ctrl->setcolreg(regno, red, green, blue, 256 transp, update_hw_pal); 257 fallthrough; 258 case OMAPFB_COLOR_RGB565: 259 case OMAPFB_COLOR_RGB444: 260 if (r != 0) 261 break; 262 263 if (regno < 16) { 264 u16 pal; 265 pal = ((red >> (16 - var->red.length)) << 266 var->red.offset) | 267 ((green >> (16 - var->green.length)) << 268 var->green.offset) | 269 (blue >> (16 - var->blue.length)); 270 ((u32 *)(info->pseudo_palette))[regno] = pal; 271 } 272 break; 273 default: 274 BUG(); 275 } 276 return r; 277 } 278 279 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, 280 u_int transp, struct fb_info *info) 281 { 282 return _setcolreg(info, regno, red, green, blue, transp, 1); 283 } 284 285 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info) 286 { 287 int count, index, r; 288 u16 *red, *green, *blue, *transp; 289 u16 trans = 0xffff; 290 291 red = cmap->red; 292 green = cmap->green; 293 blue = cmap->blue; 294 transp = cmap->transp; 295 index = cmap->start; 296 297 for (count = 0; count < cmap->len; count++) { 298 if (transp) 299 trans = *transp++; 300 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans, 301 count == cmap->len - 1); 302 if (r != 0) 303 return r; 304 } 305 306 return 0; 307 } 308 309 static int omapfb_update_full_screen(struct fb_info *fbi); 310 311 static int omapfb_blank(int blank, struct fb_info *fbi) 312 { 313 struct omapfb_plane_struct *plane = fbi->par; 314 struct omapfb_device *fbdev = plane->fbdev; 315 int do_update = 0; 316 int r = 0; 317 318 omapfb_rqueue_lock(fbdev); 319 switch (blank) { 320 case FB_BLANK_UNBLANK: 321 if (fbdev->state == OMAPFB_SUSPENDED) { 322 if (fbdev->ctrl->resume) 323 fbdev->ctrl->resume(); 324 if (fbdev->panel->enable) 325 fbdev->panel->enable(fbdev->panel); 326 fbdev->state = OMAPFB_ACTIVE; 327 if (fbdev->ctrl->get_update_mode() == 328 OMAPFB_MANUAL_UPDATE) 329 do_update = 1; 330 } 331 break; 332 case FB_BLANK_POWERDOWN: 333 if (fbdev->state == OMAPFB_ACTIVE) { 334 if (fbdev->panel->disable) 335 fbdev->panel->disable(fbdev->panel); 336 if (fbdev->ctrl->suspend) 337 fbdev->ctrl->suspend(); 338 fbdev->state = OMAPFB_SUSPENDED; 339 } 340 break; 341 default: 342 r = -EINVAL; 343 } 344 omapfb_rqueue_unlock(fbdev); 345 346 if (r == 0 && do_update) 347 r = omapfb_update_full_screen(fbi); 348 349 return r; 350 } 351 352 static void omapfb_sync(struct fb_info *fbi) 353 { 354 struct omapfb_plane_struct *plane = fbi->par; 355 struct omapfb_device *fbdev = plane->fbdev; 356 357 omapfb_rqueue_lock(fbdev); 358 if (fbdev->ctrl->sync) 359 fbdev->ctrl->sync(); 360 omapfb_rqueue_unlock(fbdev); 361 } 362 363 /* 364 * Set fb_info.fix fields and also updates fbdev. 365 * When calling this fb_info.var must be set up already. 366 */ 367 static void set_fb_fix(struct fb_info *fbi, int from_init) 368 { 369 struct fb_fix_screeninfo *fix = &fbi->fix; 370 struct fb_var_screeninfo *var = &fbi->var; 371 struct omapfb_plane_struct *plane = fbi->par; 372 struct omapfb_mem_region *rg; 373 int bpp; 374 375 rg = &plane->fbdev->mem_desc.region[plane->idx]; 376 fbi->screen_base = rg->vaddr; 377 378 if (!from_init) { 379 mutex_lock(&fbi->mm_lock); 380 fix->smem_start = rg->paddr; 381 fix->smem_len = rg->size; 382 mutex_unlock(&fbi->mm_lock); 383 } else { 384 fix->smem_start = rg->paddr; 385 fix->smem_len = rg->size; 386 } 387 388 fix->type = FB_TYPE_PACKED_PIXELS; 389 bpp = var->bits_per_pixel; 390 if (var->nonstd) 391 fix->visual = FB_VISUAL_PSEUDOCOLOR; 392 else switch (var->bits_per_pixel) { 393 case 16: 394 case 12: 395 fix->visual = FB_VISUAL_TRUECOLOR; 396 /* 12bpp is stored in 16 bits */ 397 bpp = 16; 398 break; 399 case 1: 400 case 2: 401 case 4: 402 case 8: 403 fix->visual = FB_VISUAL_PSEUDOCOLOR; 404 break; 405 } 406 fix->accel = FB_ACCEL_OMAP1610; 407 fix->line_length = var->xres_virtual * bpp / 8; 408 } 409 410 static int set_color_mode(struct omapfb_plane_struct *plane, 411 struct fb_var_screeninfo *var) 412 { 413 switch (var->nonstd) { 414 case 0: 415 break; 416 case OMAPFB_COLOR_YUV422: 417 var->bits_per_pixel = 16; 418 plane->color_mode = var->nonstd; 419 return 0; 420 case OMAPFB_COLOR_YUV420: 421 var->bits_per_pixel = 12; 422 plane->color_mode = var->nonstd; 423 return 0; 424 case OMAPFB_COLOR_YUY422: 425 var->bits_per_pixel = 16; 426 plane->color_mode = var->nonstd; 427 return 0; 428 default: 429 return -EINVAL; 430 } 431 432 switch (var->bits_per_pixel) { 433 case 1: 434 plane->color_mode = OMAPFB_COLOR_CLUT_1BPP; 435 return 0; 436 case 2: 437 plane->color_mode = OMAPFB_COLOR_CLUT_2BPP; 438 return 0; 439 case 4: 440 plane->color_mode = OMAPFB_COLOR_CLUT_4BPP; 441 return 0; 442 case 8: 443 plane->color_mode = OMAPFB_COLOR_CLUT_8BPP; 444 return 0; 445 case 12: 446 var->bits_per_pixel = 16; 447 fallthrough; 448 case 16: 449 if (plane->fbdev->panel->bpp == 12) 450 plane->color_mode = OMAPFB_COLOR_RGB444; 451 else 452 plane->color_mode = OMAPFB_COLOR_RGB565; 453 return 0; 454 default: 455 return -EINVAL; 456 } 457 } 458 459 /* 460 * Check the values in var against our capabilities and in case of out of 461 * bound values try to adjust them. 462 */ 463 static int set_fb_var(struct fb_info *fbi, 464 struct fb_var_screeninfo *var) 465 { 466 int bpp; 467 unsigned long max_frame_size; 468 unsigned long line_size; 469 int xres_min, xres_max; 470 int yres_min, yres_max; 471 struct omapfb_plane_struct *plane = fbi->par; 472 struct omapfb_device *fbdev = plane->fbdev; 473 struct lcd_panel *panel = fbdev->panel; 474 475 if (set_color_mode(plane, var) < 0) 476 return -EINVAL; 477 478 bpp = var->bits_per_pixel; 479 if (plane->color_mode == OMAPFB_COLOR_RGB444) 480 bpp = 16; 481 482 switch (var->rotate) { 483 case 0: 484 case 180: 485 xres_min = OMAPFB_PLANE_XRES_MIN; 486 xres_max = panel->x_res; 487 yres_min = OMAPFB_PLANE_YRES_MIN; 488 yres_max = panel->y_res; 489 if (cpu_is_omap15xx()) { 490 var->xres = panel->x_res; 491 var->yres = panel->y_res; 492 } 493 break; 494 case 90: 495 case 270: 496 xres_min = OMAPFB_PLANE_YRES_MIN; 497 xres_max = panel->y_res; 498 yres_min = OMAPFB_PLANE_XRES_MIN; 499 yres_max = panel->x_res; 500 if (cpu_is_omap15xx()) { 501 var->xres = panel->y_res; 502 var->yres = panel->x_res; 503 } 504 break; 505 default: 506 return -EINVAL; 507 } 508 509 if (var->xres < xres_min) 510 var->xres = xres_min; 511 if (var->yres < yres_min) 512 var->yres = yres_min; 513 if (var->xres > xres_max) 514 var->xres = xres_max; 515 if (var->yres > yres_max) 516 var->yres = yres_max; 517 518 if (var->xres_virtual < var->xres) 519 var->xres_virtual = var->xres; 520 if (var->yres_virtual < var->yres) 521 var->yres_virtual = var->yres; 522 max_frame_size = fbdev->mem_desc.region[plane->idx].size; 523 line_size = var->xres_virtual * bpp / 8; 524 if (line_size * var->yres_virtual > max_frame_size) { 525 /* Try to keep yres_virtual first */ 526 line_size = max_frame_size / var->yres_virtual; 527 var->xres_virtual = line_size * 8 / bpp; 528 if (var->xres_virtual < var->xres) { 529 /* Still doesn't fit. Shrink yres_virtual too */ 530 var->xres_virtual = var->xres; 531 line_size = var->xres * bpp / 8; 532 var->yres_virtual = max_frame_size / line_size; 533 } 534 /* Recheck this, as the virtual size changed. */ 535 if (var->xres_virtual < var->xres) 536 var->xres = var->xres_virtual; 537 if (var->yres_virtual < var->yres) 538 var->yres = var->yres_virtual; 539 if (var->xres < xres_min || var->yres < yres_min) 540 return -EINVAL; 541 } 542 if (var->xres + var->xoffset > var->xres_virtual) 543 var->xoffset = var->xres_virtual - var->xres; 544 if (var->yres + var->yoffset > var->yres_virtual) 545 var->yoffset = var->yres_virtual - var->yres; 546 547 if (plane->color_mode == OMAPFB_COLOR_RGB444) { 548 var->red.offset = 8; var->red.length = 4; 549 var->red.msb_right = 0; 550 var->green.offset = 4; var->green.length = 4; 551 var->green.msb_right = 0; 552 var->blue.offset = 0; var->blue.length = 4; 553 var->blue.msb_right = 0; 554 } else { 555 var->red.offset = 11; var->red.length = 5; 556 var->red.msb_right = 0; 557 var->green.offset = 5; var->green.length = 6; 558 var->green.msb_right = 0; 559 var->blue.offset = 0; var->blue.length = 5; 560 var->blue.msb_right = 0; 561 } 562 563 var->height = -1; 564 var->width = -1; 565 var->grayscale = 0; 566 567 /* pixclock in ps, the rest in pixclock */ 568 var->pixclock = 10000000 / (panel->pixel_clock / 100); 569 var->left_margin = panel->hfp; 570 var->right_margin = panel->hbp; 571 var->upper_margin = panel->vfp; 572 var->lower_margin = panel->vbp; 573 var->hsync_len = panel->hsw; 574 var->vsync_len = panel->vsw; 575 576 /* TODO: get these from panel->config */ 577 var->vmode = FB_VMODE_NONINTERLACED; 578 var->sync = 0; 579 580 return 0; 581 } 582 583 584 /* 585 * Set new x,y offsets in the virtual display for the visible area and switch 586 * to the new mode. 587 */ 588 static int omapfb_pan_display(struct fb_var_screeninfo *var, 589 struct fb_info *fbi) 590 { 591 struct omapfb_plane_struct *plane = fbi->par; 592 struct omapfb_device *fbdev = plane->fbdev; 593 int r = 0; 594 595 omapfb_rqueue_lock(fbdev); 596 if (var->xoffset != fbi->var.xoffset || 597 var->yoffset != fbi->var.yoffset) { 598 struct fb_var_screeninfo *new_var = &fbdev->new_var; 599 600 memcpy(new_var, &fbi->var, sizeof(*new_var)); 601 new_var->xoffset = var->xoffset; 602 new_var->yoffset = var->yoffset; 603 if (set_fb_var(fbi, new_var)) 604 r = -EINVAL; 605 else { 606 memcpy(&fbi->var, new_var, sizeof(*new_var)); 607 ctrl_change_mode(fbi); 608 } 609 } 610 omapfb_rqueue_unlock(fbdev); 611 612 return r; 613 } 614 615 /* Set mirror to vertical axis and switch to the new mode. */ 616 static int omapfb_mirror(struct fb_info *fbi, int mirror) 617 { 618 struct omapfb_plane_struct *plane = fbi->par; 619 struct omapfb_device *fbdev = plane->fbdev; 620 int r = 0; 621 622 omapfb_rqueue_lock(fbdev); 623 mirror = mirror ? 1 : 0; 624 if (cpu_is_omap15xx()) 625 r = -EINVAL; 626 else if (mirror != plane->info.mirror) { 627 plane->info.mirror = mirror; 628 r = ctrl_change_mode(fbi); 629 } 630 omapfb_rqueue_unlock(fbdev); 631 632 return r; 633 } 634 635 /* 636 * Check values in var, try to adjust them in case of out of bound values if 637 * possible, or return error. 638 */ 639 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi) 640 { 641 struct omapfb_plane_struct *plane = fbi->par; 642 struct omapfb_device *fbdev = plane->fbdev; 643 int r; 644 645 omapfb_rqueue_lock(fbdev); 646 if (fbdev->ctrl->sync != NULL) 647 fbdev->ctrl->sync(); 648 r = set_fb_var(fbi, var); 649 omapfb_rqueue_unlock(fbdev); 650 651 return r; 652 } 653 654 /* 655 * Switch to a new mode. The parameters for it has been check already by 656 * omapfb_check_var. 657 */ 658 static int omapfb_set_par(struct fb_info *fbi) 659 { 660 struct omapfb_plane_struct *plane = fbi->par; 661 struct omapfb_device *fbdev = plane->fbdev; 662 int r = 0; 663 664 omapfb_rqueue_lock(fbdev); 665 set_fb_fix(fbi, 0); 666 r = ctrl_change_mode(fbi); 667 omapfb_rqueue_unlock(fbdev); 668 669 return r; 670 } 671 672 int omapfb_update_window_async(struct fb_info *fbi, 673 struct omapfb_update_window *win, 674 void (*callback)(void *), 675 void *callback_data) 676 { 677 int xres, yres; 678 struct omapfb_plane_struct *plane = fbi->par; 679 struct omapfb_device *fbdev = plane->fbdev; 680 struct fb_var_screeninfo *var = &fbi->var; 681 682 switch (var->rotate) { 683 case 0: 684 case 180: 685 xres = fbdev->panel->x_res; 686 yres = fbdev->panel->y_res; 687 break; 688 case 90: 689 case 270: 690 xres = fbdev->panel->y_res; 691 yres = fbdev->panel->x_res; 692 break; 693 default: 694 return -EINVAL; 695 } 696 697 if (win->x >= xres || win->y >= yres || 698 win->out_x > xres || win->out_y > yres) 699 return -EINVAL; 700 701 if (!fbdev->ctrl->update_window || 702 fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE) 703 return -ENODEV; 704 705 if (win->x + win->width > xres) 706 win->width = xres - win->x; 707 if (win->y + win->height > yres) 708 win->height = yres - win->y; 709 if (win->out_x + win->out_width > xres) 710 win->out_width = xres - win->out_x; 711 if (win->out_y + win->out_height > yres) 712 win->out_height = yres - win->out_y; 713 if (!win->width || !win->height || !win->out_width || !win->out_height) 714 return 0; 715 716 return fbdev->ctrl->update_window(fbi, win, callback, callback_data); 717 } 718 EXPORT_SYMBOL(omapfb_update_window_async); 719 720 static int omapfb_update_win(struct fb_info *fbi, 721 struct omapfb_update_window *win) 722 { 723 struct omapfb_plane_struct *plane = fbi->par; 724 int ret; 725 726 omapfb_rqueue_lock(plane->fbdev); 727 ret = omapfb_update_window_async(fbi, win, NULL, NULL); 728 omapfb_rqueue_unlock(plane->fbdev); 729 730 return ret; 731 } 732 733 static int omapfb_update_full_screen(struct fb_info *fbi) 734 { 735 struct omapfb_plane_struct *plane = fbi->par; 736 struct omapfb_device *fbdev = plane->fbdev; 737 struct omapfb_update_window win; 738 int r; 739 740 if (!fbdev->ctrl->update_window || 741 fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE) 742 return -ENODEV; 743 744 win.x = 0; 745 win.y = 0; 746 win.width = fbi->var.xres; 747 win.height = fbi->var.yres; 748 win.out_x = 0; 749 win.out_y = 0; 750 win.out_width = fbi->var.xres; 751 win.out_height = fbi->var.yres; 752 win.format = 0; 753 754 omapfb_rqueue_lock(fbdev); 755 r = fbdev->ctrl->update_window(fbi, &win, NULL, NULL); 756 omapfb_rqueue_unlock(fbdev); 757 758 return r; 759 } 760 761 static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi) 762 { 763 struct omapfb_plane_struct *plane = fbi->par; 764 struct omapfb_device *fbdev = plane->fbdev; 765 struct lcd_panel *panel = fbdev->panel; 766 struct omapfb_plane_info old_info; 767 int r = 0; 768 769 if (pi->pos_x + pi->out_width > panel->x_res || 770 pi->pos_y + pi->out_height > panel->y_res) 771 return -EINVAL; 772 773 omapfb_rqueue_lock(fbdev); 774 if (pi->enabled && !fbdev->mem_desc.region[plane->idx].size) { 775 /* 776 * This plane's memory was freed, can't enable it 777 * until it's reallocated. 778 */ 779 r = -EINVAL; 780 goto out; 781 } 782 old_info = plane->info; 783 plane->info = *pi; 784 if (pi->enabled) { 785 r = ctrl_change_mode(fbi); 786 if (r < 0) { 787 plane->info = old_info; 788 goto out; 789 } 790 } 791 r = fbdev->ctrl->enable_plane(plane->idx, pi->enabled); 792 if (r < 0) { 793 plane->info = old_info; 794 goto out; 795 } 796 out: 797 omapfb_rqueue_unlock(fbdev); 798 return r; 799 } 800 801 static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi) 802 { 803 struct omapfb_plane_struct *plane = fbi->par; 804 805 *pi = plane->info; 806 return 0; 807 } 808 809 static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi) 810 { 811 struct omapfb_plane_struct *plane = fbi->par; 812 struct omapfb_device *fbdev = plane->fbdev; 813 struct omapfb_mem_region *rg = &fbdev->mem_desc.region[plane->idx]; 814 size_t size; 815 int r = 0; 816 817 if (fbdev->ctrl->setup_mem == NULL) 818 return -ENODEV; 819 if (mi->type != OMAPFB_MEMTYPE_SDRAM) 820 return -EINVAL; 821 822 size = PAGE_ALIGN(mi->size); 823 omapfb_rqueue_lock(fbdev); 824 if (plane->info.enabled) { 825 r = -EBUSY; 826 goto out; 827 } 828 if (rg->size != size || rg->type != mi->type) { 829 struct fb_var_screeninfo *new_var = &fbdev->new_var; 830 unsigned long old_size = rg->size; 831 u8 old_type = rg->type; 832 unsigned long paddr; 833 834 rg->size = size; 835 rg->type = mi->type; 836 /* 837 * size == 0 is a special case, for which we 838 * don't check / adjust the screen parameters. 839 * This isn't a problem since the plane can't 840 * be reenabled unless its size is > 0. 841 */ 842 if (old_size != size && size) { 843 if (size) { 844 memcpy(new_var, &fbi->var, sizeof(*new_var)); 845 r = set_fb_var(fbi, new_var); 846 if (r < 0) 847 goto out; 848 } 849 } 850 851 if (fbdev->ctrl->sync) 852 fbdev->ctrl->sync(); 853 r = fbdev->ctrl->setup_mem(plane->idx, size, mi->type, &paddr); 854 if (r < 0) { 855 /* Revert changes. */ 856 rg->size = old_size; 857 rg->type = old_type; 858 goto out; 859 } 860 rg->paddr = paddr; 861 862 if (old_size != size) { 863 if (size) { 864 memcpy(&fbi->var, new_var, sizeof(fbi->var)); 865 set_fb_fix(fbi, 0); 866 } else { 867 /* 868 * Set these explicitly to indicate that the 869 * plane memory is dealloce'd, the other 870 * screen parameters in var / fix are invalid. 871 */ 872 mutex_lock(&fbi->mm_lock); 873 fbi->fix.smem_start = 0; 874 fbi->fix.smem_len = 0; 875 mutex_unlock(&fbi->mm_lock); 876 } 877 } 878 } 879 out: 880 omapfb_rqueue_unlock(fbdev); 881 882 return r; 883 } 884 885 static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi) 886 { 887 struct omapfb_plane_struct *plane = fbi->par; 888 struct omapfb_device *fbdev = plane->fbdev; 889 struct omapfb_mem_region *rg; 890 891 rg = &fbdev->mem_desc.region[plane->idx]; 892 memset(mi, 0, sizeof(*mi)); 893 mi->size = rg->size; 894 mi->type = rg->type; 895 896 return 0; 897 } 898 899 static int omapfb_set_color_key(struct omapfb_device *fbdev, 900 struct omapfb_color_key *ck) 901 { 902 int r; 903 904 if (!fbdev->ctrl->set_color_key) 905 return -ENODEV; 906 907 omapfb_rqueue_lock(fbdev); 908 r = fbdev->ctrl->set_color_key(ck); 909 omapfb_rqueue_unlock(fbdev); 910 911 return r; 912 } 913 914 static int omapfb_get_color_key(struct omapfb_device *fbdev, 915 struct omapfb_color_key *ck) 916 { 917 int r; 918 919 if (!fbdev->ctrl->get_color_key) 920 return -ENODEV; 921 922 omapfb_rqueue_lock(fbdev); 923 r = fbdev->ctrl->get_color_key(ck); 924 omapfb_rqueue_unlock(fbdev); 925 926 return r; 927 } 928 929 static struct blocking_notifier_head omapfb_client_list[OMAPFB_PLANE_NUM]; 930 static int notifier_inited; 931 932 static void omapfb_init_notifier(void) 933 { 934 int i; 935 936 for (i = 0; i < OMAPFB_PLANE_NUM; i++) 937 BLOCKING_INIT_NOTIFIER_HEAD(&omapfb_client_list[i]); 938 } 939 940 int omapfb_register_client(struct omapfb_notifier_block *omapfb_nb, 941 omapfb_notifier_callback_t callback, 942 void *callback_data) 943 { 944 int r; 945 946 if ((unsigned)omapfb_nb->plane_idx >= OMAPFB_PLANE_NUM) 947 return -EINVAL; 948 949 if (!notifier_inited) { 950 omapfb_init_notifier(); 951 notifier_inited = 1; 952 } 953 954 omapfb_nb->nb.notifier_call = (int (*)(struct notifier_block *, 955 unsigned long, void *))callback; 956 omapfb_nb->data = callback_data; 957 r = blocking_notifier_chain_register( 958 &omapfb_client_list[omapfb_nb->plane_idx], 959 &omapfb_nb->nb); 960 if (r) 961 return r; 962 if (omapfb_dev != NULL && 963 omapfb_dev->ctrl && omapfb_dev->ctrl->bind_client) { 964 omapfb_dev->ctrl->bind_client(omapfb_nb); 965 } 966 967 return 0; 968 } 969 EXPORT_SYMBOL(omapfb_register_client); 970 971 int omapfb_unregister_client(struct omapfb_notifier_block *omapfb_nb) 972 { 973 return blocking_notifier_chain_unregister( 974 &omapfb_client_list[omapfb_nb->plane_idx], &omapfb_nb->nb); 975 } 976 EXPORT_SYMBOL(omapfb_unregister_client); 977 978 void omapfb_notify_clients(struct omapfb_device *fbdev, unsigned long event) 979 { 980 int i; 981 982 if (!notifier_inited) 983 /* no client registered yet */ 984 return; 985 986 for (i = 0; i < OMAPFB_PLANE_NUM; i++) 987 blocking_notifier_call_chain(&omapfb_client_list[i], event, 988 fbdev->fb_info[i]); 989 } 990 EXPORT_SYMBOL(omapfb_notify_clients); 991 992 static int omapfb_set_update_mode(struct omapfb_device *fbdev, 993 enum omapfb_update_mode mode) 994 { 995 int r; 996 997 omapfb_rqueue_lock(fbdev); 998 r = fbdev->ctrl->set_update_mode(mode); 999 omapfb_rqueue_unlock(fbdev); 1000 1001 return r; 1002 } 1003 1004 static enum omapfb_update_mode omapfb_get_update_mode(struct omapfb_device *fbdev) 1005 { 1006 int r; 1007 1008 omapfb_rqueue_lock(fbdev); 1009 r = fbdev->ctrl->get_update_mode(); 1010 omapfb_rqueue_unlock(fbdev); 1011 1012 return r; 1013 } 1014 1015 static void omapfb_get_caps(struct omapfb_device *fbdev, int plane, 1016 struct omapfb_caps *caps) 1017 { 1018 memset(caps, 0, sizeof(*caps)); 1019 fbdev->ctrl->get_caps(plane, caps); 1020 if (fbdev->panel->get_caps) 1021 caps->ctrl |= fbdev->panel->get_caps(fbdev->panel); 1022 } 1023 1024 /* For lcd testing */ 1025 void omapfb_write_first_pixel(struct omapfb_device *fbdev, u16 pixval) 1026 { 1027 omapfb_rqueue_lock(fbdev); 1028 *(u16 *)fbdev->mem_desc.region[0].vaddr = pixval; 1029 if (fbdev->ctrl->get_update_mode() == OMAPFB_MANUAL_UPDATE) { 1030 struct omapfb_update_window win; 1031 1032 memset(&win, 0, sizeof(win)); 1033 win.width = 2; 1034 win.height = 2; 1035 win.out_width = 2; 1036 win.out_height = 2; 1037 fbdev->ctrl->update_window(fbdev->fb_info[0], &win, NULL, NULL); 1038 } 1039 omapfb_rqueue_unlock(fbdev); 1040 } 1041 EXPORT_SYMBOL(omapfb_write_first_pixel); 1042 1043 /* 1044 * Ioctl interface. Part of the kernel mode frame buffer API is duplicated 1045 * here to be accessible by user mode code. 1046 */ 1047 static int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, 1048 unsigned long arg) 1049 { 1050 struct omapfb_plane_struct *plane = fbi->par; 1051 struct omapfb_device *fbdev = plane->fbdev; 1052 const struct fb_ops *ops = fbi->fbops; 1053 union { 1054 struct omapfb_update_window update_window; 1055 struct omapfb_plane_info plane_info; 1056 struct omapfb_mem_info mem_info; 1057 struct omapfb_color_key color_key; 1058 enum omapfb_update_mode update_mode; 1059 struct omapfb_caps caps; 1060 unsigned int mirror; 1061 int plane_out; 1062 int enable_plane; 1063 } p; 1064 int r = 0; 1065 1066 BUG_ON(!ops); 1067 switch (cmd) { 1068 case OMAPFB_MIRROR: 1069 if (get_user(p.mirror, (int __user *)arg)) 1070 r = -EFAULT; 1071 else 1072 omapfb_mirror(fbi, p.mirror); 1073 break; 1074 case OMAPFB_SYNC_GFX: 1075 omapfb_sync(fbi); 1076 break; 1077 case OMAPFB_VSYNC: 1078 break; 1079 case OMAPFB_SET_UPDATE_MODE: 1080 if (get_user(p.update_mode, (int __user *)arg)) 1081 r = -EFAULT; 1082 else 1083 r = omapfb_set_update_mode(fbdev, p.update_mode); 1084 break; 1085 case OMAPFB_GET_UPDATE_MODE: 1086 p.update_mode = omapfb_get_update_mode(fbdev); 1087 if (put_user(p.update_mode, 1088 (enum omapfb_update_mode __user *)arg)) 1089 r = -EFAULT; 1090 break; 1091 case OMAPFB_UPDATE_WINDOW_OLD: 1092 if (copy_from_user(&p.update_window, (void __user *)arg, 1093 sizeof(struct omapfb_update_window_old))) 1094 r = -EFAULT; 1095 else { 1096 struct omapfb_update_window *u = &p.update_window; 1097 u->out_x = u->x; 1098 u->out_y = u->y; 1099 u->out_width = u->width; 1100 u->out_height = u->height; 1101 memset(u->reserved, 0, sizeof(u->reserved)); 1102 r = omapfb_update_win(fbi, u); 1103 } 1104 break; 1105 case OMAPFB_UPDATE_WINDOW: 1106 if (copy_from_user(&p.update_window, (void __user *)arg, 1107 sizeof(p.update_window))) 1108 r = -EFAULT; 1109 else 1110 r = omapfb_update_win(fbi, &p.update_window); 1111 break; 1112 case OMAPFB_SETUP_PLANE: 1113 if (copy_from_user(&p.plane_info, (void __user *)arg, 1114 sizeof(p.plane_info))) 1115 r = -EFAULT; 1116 else 1117 r = omapfb_setup_plane(fbi, &p.plane_info); 1118 break; 1119 case OMAPFB_QUERY_PLANE: 1120 if ((r = omapfb_query_plane(fbi, &p.plane_info)) < 0) 1121 break; 1122 if (copy_to_user((void __user *)arg, &p.plane_info, 1123 sizeof(p.plane_info))) 1124 r = -EFAULT; 1125 break; 1126 case OMAPFB_SETUP_MEM: 1127 if (copy_from_user(&p.mem_info, (void __user *)arg, 1128 sizeof(p.mem_info))) 1129 r = -EFAULT; 1130 else 1131 r = omapfb_setup_mem(fbi, &p.mem_info); 1132 break; 1133 case OMAPFB_QUERY_MEM: 1134 if ((r = omapfb_query_mem(fbi, &p.mem_info)) < 0) 1135 break; 1136 if (copy_to_user((void __user *)arg, &p.mem_info, 1137 sizeof(p.mem_info))) 1138 r = -EFAULT; 1139 break; 1140 case OMAPFB_SET_COLOR_KEY: 1141 if (copy_from_user(&p.color_key, (void __user *)arg, 1142 sizeof(p.color_key))) 1143 r = -EFAULT; 1144 else 1145 r = omapfb_set_color_key(fbdev, &p.color_key); 1146 break; 1147 case OMAPFB_GET_COLOR_KEY: 1148 if ((r = omapfb_get_color_key(fbdev, &p.color_key)) < 0) 1149 break; 1150 if (copy_to_user((void __user *)arg, &p.color_key, 1151 sizeof(p.color_key))) 1152 r = -EFAULT; 1153 break; 1154 case OMAPFB_GET_CAPS: 1155 omapfb_get_caps(fbdev, plane->idx, &p.caps); 1156 if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps))) 1157 r = -EFAULT; 1158 break; 1159 case OMAPFB_LCD_TEST: 1160 { 1161 int test_num; 1162 1163 if (get_user(test_num, (int __user *)arg)) { 1164 r = -EFAULT; 1165 break; 1166 } 1167 if (!fbdev->panel->run_test) { 1168 r = -EINVAL; 1169 break; 1170 } 1171 r = fbdev->panel->run_test(fbdev->panel, test_num); 1172 break; 1173 } 1174 case OMAPFB_CTRL_TEST: 1175 { 1176 int test_num; 1177 1178 if (get_user(test_num, (int __user *)arg)) { 1179 r = -EFAULT; 1180 break; 1181 } 1182 if (!fbdev->ctrl->run_test) { 1183 r = -EINVAL; 1184 break; 1185 } 1186 r = fbdev->ctrl->run_test(test_num); 1187 break; 1188 } 1189 default: 1190 r = -EINVAL; 1191 } 1192 1193 return r; 1194 } 1195 1196 static int omapfb_mmap(struct fb_info *info, struct vm_area_struct *vma) 1197 { 1198 struct omapfb_plane_struct *plane = info->par; 1199 struct omapfb_device *fbdev = plane->fbdev; 1200 int r; 1201 1202 omapfb_rqueue_lock(fbdev); 1203 r = fbdev->ctrl->mmap(info, vma); 1204 omapfb_rqueue_unlock(fbdev); 1205 1206 return r; 1207 } 1208 1209 /* 1210 * Callback table for the frame buffer framework. Some of these pointers 1211 * will be changed according to the current setting of fb_info->accel_flags. 1212 */ 1213 static struct fb_ops omapfb_ops = { 1214 .owner = THIS_MODULE, 1215 .fb_open = omapfb_open, 1216 .fb_release = omapfb_release, 1217 .fb_setcolreg = omapfb_setcolreg, 1218 .fb_setcmap = omapfb_setcmap, 1219 .fb_fillrect = cfb_fillrect, 1220 .fb_copyarea = cfb_copyarea, 1221 .fb_imageblit = cfb_imageblit, 1222 .fb_blank = omapfb_blank, 1223 .fb_ioctl = omapfb_ioctl, 1224 .fb_check_var = omapfb_check_var, 1225 .fb_set_par = omapfb_set_par, 1226 .fb_pan_display = omapfb_pan_display, 1227 }; 1228 1229 /* 1230 * --------------------------------------------------------------------------- 1231 * Sysfs interface 1232 * --------------------------------------------------------------------------- 1233 */ 1234 /* omapfbX sysfs entries */ 1235 static ssize_t omapfb_show_caps_num(struct device *dev, 1236 struct device_attribute *attr, char *buf) 1237 { 1238 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1239 int plane; 1240 size_t size; 1241 struct omapfb_caps caps; 1242 1243 plane = 0; 1244 size = 0; 1245 while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) { 1246 omapfb_get_caps(fbdev, plane, &caps); 1247 size += scnprintf(&buf[size], PAGE_SIZE - size, 1248 "plane#%d %#010x %#010x %#010x\n", 1249 plane, caps.ctrl, caps.plane_color, caps.wnd_color); 1250 plane++; 1251 } 1252 return size; 1253 } 1254 1255 static ssize_t omapfb_show_caps_text(struct device *dev, 1256 struct device_attribute *attr, char *buf) 1257 { 1258 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1259 int i; 1260 struct omapfb_caps caps; 1261 int plane; 1262 size_t size; 1263 1264 plane = 0; 1265 size = 0; 1266 while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) { 1267 omapfb_get_caps(fbdev, plane, &caps); 1268 size += scnprintf(&buf[size], PAGE_SIZE - size, 1269 "plane#%d:\n", plane); 1270 for (i = 0; i < ARRAY_SIZE(ctrl_caps) && 1271 size < PAGE_SIZE; i++) { 1272 if (ctrl_caps[i].flag & caps.ctrl) 1273 size += scnprintf(&buf[size], PAGE_SIZE - size, 1274 " %s\n", ctrl_caps[i].name); 1275 } 1276 size += scnprintf(&buf[size], PAGE_SIZE - size, 1277 " plane colors:\n"); 1278 for (i = 0; i < ARRAY_SIZE(color_caps) && 1279 size < PAGE_SIZE; i++) { 1280 if (color_caps[i].flag & caps.plane_color) 1281 size += scnprintf(&buf[size], PAGE_SIZE - size, 1282 " %s\n", color_caps[i].name); 1283 } 1284 size += scnprintf(&buf[size], PAGE_SIZE - size, 1285 " window colors:\n"); 1286 for (i = 0; i < ARRAY_SIZE(color_caps) && 1287 size < PAGE_SIZE; i++) { 1288 if (color_caps[i].flag & caps.wnd_color) 1289 size += scnprintf(&buf[size], PAGE_SIZE - size, 1290 " %s\n", color_caps[i].name); 1291 } 1292 1293 plane++; 1294 } 1295 return size; 1296 } 1297 1298 static DEVICE_ATTR(caps_num, 0444, omapfb_show_caps_num, NULL); 1299 static DEVICE_ATTR(caps_text, 0444, omapfb_show_caps_text, NULL); 1300 1301 /* panel sysfs entries */ 1302 static ssize_t omapfb_show_panel_name(struct device *dev, 1303 struct device_attribute *attr, char *buf) 1304 { 1305 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1306 1307 return sysfs_emit(buf, "%s\n", fbdev->panel->name); 1308 } 1309 1310 static ssize_t omapfb_show_bklight_level(struct device *dev, 1311 struct device_attribute *attr, 1312 char *buf) 1313 { 1314 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1315 int r; 1316 1317 if (fbdev->panel->get_bklight_level) { 1318 r = sysfs_emit(buf, "%d\n", 1319 fbdev->panel->get_bklight_level(fbdev->panel)); 1320 } else 1321 r = -ENODEV; 1322 return r; 1323 } 1324 1325 static ssize_t omapfb_store_bklight_level(struct device *dev, 1326 struct device_attribute *attr, 1327 const char *buf, size_t size) 1328 { 1329 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1330 int r; 1331 1332 if (fbdev->panel->set_bklight_level) { 1333 unsigned int level; 1334 1335 if (sscanf(buf, "%10d", &level) == 1) { 1336 r = fbdev->panel->set_bklight_level(fbdev->panel, 1337 level); 1338 } else 1339 r = -EINVAL; 1340 } else 1341 r = -ENODEV; 1342 return r ? r : size; 1343 } 1344 1345 static ssize_t omapfb_show_bklight_max(struct device *dev, 1346 struct device_attribute *attr, char *buf) 1347 { 1348 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1349 int r; 1350 1351 if (fbdev->panel->get_bklight_level) { 1352 r = sysfs_emit(buf, "%d\n", 1353 fbdev->panel->get_bklight_max(fbdev->panel)); 1354 } else 1355 r = -ENODEV; 1356 return r; 1357 } 1358 1359 static struct device_attribute dev_attr_panel_name = 1360 __ATTR(name, 0444, omapfb_show_panel_name, NULL); 1361 static DEVICE_ATTR(backlight_level, 0664, 1362 omapfb_show_bklight_level, omapfb_store_bklight_level); 1363 static DEVICE_ATTR(backlight_max, 0444, omapfb_show_bklight_max, NULL); 1364 1365 static struct attribute *panel_attrs[] = { 1366 &dev_attr_panel_name.attr, 1367 &dev_attr_backlight_level.attr, 1368 &dev_attr_backlight_max.attr, 1369 NULL, 1370 }; 1371 1372 static const struct attribute_group panel_attr_grp = { 1373 .name = "panel", 1374 .attrs = panel_attrs, 1375 }; 1376 1377 /* ctrl sysfs entries */ 1378 static ssize_t omapfb_show_ctrl_name(struct device *dev, 1379 struct device_attribute *attr, char *buf) 1380 { 1381 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1382 1383 return sysfs_emit(buf, "%s\n", fbdev->ctrl->name); 1384 } 1385 1386 static struct device_attribute dev_attr_ctrl_name = 1387 __ATTR(name, 0444, omapfb_show_ctrl_name, NULL); 1388 1389 static struct attribute *ctrl_attrs[] = { 1390 &dev_attr_ctrl_name.attr, 1391 NULL, 1392 }; 1393 1394 static const struct attribute_group ctrl_attr_grp = { 1395 .name = "ctrl", 1396 .attrs = ctrl_attrs, 1397 }; 1398 1399 static int omapfb_register_sysfs(struct omapfb_device *fbdev) 1400 { 1401 int r; 1402 1403 if ((r = device_create_file(fbdev->dev, &dev_attr_caps_num))) 1404 goto fail0; 1405 1406 if ((r = device_create_file(fbdev->dev, &dev_attr_caps_text))) 1407 goto fail1; 1408 1409 if ((r = sysfs_create_group(&fbdev->dev->kobj, &panel_attr_grp))) 1410 goto fail2; 1411 1412 if ((r = sysfs_create_group(&fbdev->dev->kobj, &ctrl_attr_grp))) 1413 goto fail3; 1414 1415 return 0; 1416 fail3: 1417 sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp); 1418 fail2: 1419 device_remove_file(fbdev->dev, &dev_attr_caps_text); 1420 fail1: 1421 device_remove_file(fbdev->dev, &dev_attr_caps_num); 1422 fail0: 1423 dev_err(fbdev->dev, "unable to register sysfs interface\n"); 1424 return r; 1425 } 1426 1427 static void omapfb_unregister_sysfs(struct omapfb_device *fbdev) 1428 { 1429 sysfs_remove_group(&fbdev->dev->kobj, &ctrl_attr_grp); 1430 sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp); 1431 device_remove_file(fbdev->dev, &dev_attr_caps_num); 1432 device_remove_file(fbdev->dev, &dev_attr_caps_text); 1433 } 1434 1435 /* 1436 * --------------------------------------------------------------------------- 1437 * LDM callbacks 1438 * --------------------------------------------------------------------------- 1439 */ 1440 /* Initialize system fb_info object and set the default video mode. 1441 * The frame buffer memory already allocated by lcddma_init 1442 */ 1443 static int fbinfo_init(struct omapfb_device *fbdev, struct fb_info *info) 1444 { 1445 struct fb_var_screeninfo *var = &info->var; 1446 struct fb_fix_screeninfo *fix = &info->fix; 1447 int r = 0; 1448 1449 info->fbops = &omapfb_ops; 1450 info->flags = FBINFO_FLAG_DEFAULT; 1451 1452 strncpy(fix->id, MODULE_NAME, sizeof(fix->id)); 1453 1454 info->pseudo_palette = fbdev->pseudo_palette; 1455 1456 var->accel_flags = def_accel ? FB_ACCELF_TEXT : 0; 1457 var->xres = def_vxres; 1458 var->yres = def_vyres; 1459 var->xres_virtual = def_vxres; 1460 var->yres_virtual = def_vyres; 1461 var->rotate = def_rotate; 1462 var->bits_per_pixel = fbdev->panel->bpp; 1463 1464 set_fb_var(info, var); 1465 set_fb_fix(info, 1); 1466 1467 r = fb_alloc_cmap(&info->cmap, 16, 0); 1468 if (r != 0) 1469 dev_err(fbdev->dev, "unable to allocate color map memory\n"); 1470 1471 return r; 1472 } 1473 1474 /* Release the fb_info object */ 1475 static void fbinfo_cleanup(struct omapfb_device *fbdev, struct fb_info *fbi) 1476 { 1477 fb_dealloc_cmap(&fbi->cmap); 1478 } 1479 1480 static void planes_cleanup(struct omapfb_device *fbdev) 1481 { 1482 int i; 1483 1484 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { 1485 if (fbdev->fb_info[i] == NULL) 1486 break; 1487 fbinfo_cleanup(fbdev, fbdev->fb_info[i]); 1488 framebuffer_release(fbdev->fb_info[i]); 1489 } 1490 } 1491 1492 static int planes_init(struct omapfb_device *fbdev) 1493 { 1494 struct fb_info *fbi; 1495 int i; 1496 int r; 1497 1498 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { 1499 struct omapfb_plane_struct *plane; 1500 fbi = framebuffer_alloc(sizeof(struct omapfb_plane_struct), 1501 fbdev->dev); 1502 if (fbi == NULL) { 1503 planes_cleanup(fbdev); 1504 return -ENOMEM; 1505 } 1506 plane = fbi->par; 1507 plane->idx = i; 1508 plane->fbdev = fbdev; 1509 plane->info.mirror = def_mirror; 1510 fbdev->fb_info[i] = fbi; 1511 1512 if ((r = fbinfo_init(fbdev, fbi)) < 0) { 1513 framebuffer_release(fbi); 1514 planes_cleanup(fbdev); 1515 return r; 1516 } 1517 plane->info.out_width = fbi->var.xres; 1518 plane->info.out_height = fbi->var.yres; 1519 } 1520 return 0; 1521 } 1522 1523 /* 1524 * Free driver resources. Can be called to rollback an aborted initialization 1525 * sequence. 1526 */ 1527 static void omapfb_free_resources(struct omapfb_device *fbdev, int state) 1528 { 1529 int i; 1530 1531 switch (state) { 1532 case OMAPFB_ACTIVE: 1533 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) 1534 unregister_framebuffer(fbdev->fb_info[i]); 1535 fallthrough; 1536 case 7: 1537 omapfb_unregister_sysfs(fbdev); 1538 fallthrough; 1539 case 6: 1540 if (fbdev->panel->disable) 1541 fbdev->panel->disable(fbdev->panel); 1542 fallthrough; 1543 case 5: 1544 omapfb_set_update_mode(fbdev, OMAPFB_UPDATE_DISABLED); 1545 fallthrough; 1546 case 4: 1547 planes_cleanup(fbdev); 1548 fallthrough; 1549 case 3: 1550 ctrl_cleanup(fbdev); 1551 fallthrough; 1552 case 2: 1553 if (fbdev->panel->cleanup) 1554 fbdev->panel->cleanup(fbdev->panel); 1555 fallthrough; 1556 case 1: 1557 dev_set_drvdata(fbdev->dev, NULL); 1558 kfree(fbdev); 1559 break; 1560 case 0: 1561 /* nothing to free */ 1562 break; 1563 default: 1564 BUG(); 1565 } 1566 } 1567 1568 static int omapfb_find_ctrl(struct omapfb_device *fbdev) 1569 { 1570 struct omapfb_platform_data *conf; 1571 char name[17]; 1572 int i; 1573 1574 conf = dev_get_platdata(fbdev->dev); 1575 1576 fbdev->ctrl = NULL; 1577 1578 strncpy(name, conf->lcd.ctrl_name, sizeof(name) - 1); 1579 name[sizeof(name) - 1] = '\0'; 1580 1581 if (strcmp(name, "internal") == 0) { 1582 fbdev->ctrl = fbdev->int_ctrl; 1583 return 0; 1584 } 1585 1586 for (i = 0; i < ARRAY_SIZE(ctrls); i++) { 1587 dev_dbg(fbdev->dev, "ctrl %s\n", ctrls[i]->name); 1588 if (strcmp(ctrls[i]->name, name) == 0) { 1589 fbdev->ctrl = ctrls[i]; 1590 break; 1591 } 1592 } 1593 1594 if (fbdev->ctrl == NULL) { 1595 dev_dbg(fbdev->dev, "ctrl %s not supported\n", name); 1596 return -1; 1597 } 1598 1599 return 0; 1600 } 1601 1602 /* 1603 * Called by LDM binding to probe and attach a new device. 1604 * Initialization sequence: 1605 * 1. allocate system omapfb_device structure 1606 * 2. select controller type according to platform configuration 1607 * init LCD panel 1608 * 3. init LCD controller and LCD DMA 1609 * 4. init system fb_info structure for all planes 1610 * 5. setup video mode for first plane and enable it 1611 * 6. enable LCD panel 1612 * 7. register sysfs attributes 1613 * OMAPFB_ACTIVE: register system fb_info structure for all planes 1614 */ 1615 static int omapfb_do_probe(struct platform_device *pdev, 1616 struct lcd_panel *panel) 1617 { 1618 struct omapfb_device *fbdev = NULL; 1619 int init_state; 1620 unsigned long phz, hhz, vhz; 1621 unsigned long vram; 1622 int i; 1623 int r = 0; 1624 1625 init_state = 0; 1626 1627 if (pdev->num_resources != 0) { 1628 dev_err(&pdev->dev, "probed for an unknown device\n"); 1629 r = -ENODEV; 1630 goto cleanup; 1631 } 1632 1633 if (dev_get_platdata(&pdev->dev) == NULL) { 1634 dev_err(&pdev->dev, "missing platform data\n"); 1635 r = -ENOENT; 1636 goto cleanup; 1637 } 1638 1639 fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL); 1640 if (fbdev == NULL) { 1641 dev_err(&pdev->dev, 1642 "unable to allocate memory for device info\n"); 1643 r = -ENOMEM; 1644 goto cleanup; 1645 } 1646 init_state++; 1647 1648 fbdev->dev = &pdev->dev; 1649 fbdev->panel = panel; 1650 fbdev->dssdev = &omapdss_device; 1651 platform_set_drvdata(pdev, fbdev); 1652 1653 mutex_init(&fbdev->rqueue_mutex); 1654 1655 fbdev->int_ctrl = &omap1_int_ctrl; 1656 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL 1657 fbdev->ext_if = &omap1_ext_if; 1658 #endif 1659 if (omapfb_find_ctrl(fbdev) < 0) { 1660 dev_err(fbdev->dev, 1661 "LCD controller not found, board not supported\n"); 1662 r = -ENODEV; 1663 goto cleanup; 1664 } 1665 1666 if (fbdev->panel->init) { 1667 r = fbdev->panel->init(fbdev->panel, fbdev); 1668 if (r) 1669 goto cleanup; 1670 } 1671 1672 pr_info("omapfb: configured for panel %s\n", fbdev->panel->name); 1673 1674 def_vxres = def_vxres ? def_vxres : fbdev->panel->x_res; 1675 def_vyres = def_vyres ? def_vyres : fbdev->panel->y_res; 1676 1677 init_state++; 1678 1679 r = ctrl_init(fbdev); 1680 if (r) 1681 goto cleanup; 1682 if (fbdev->ctrl->mmap != NULL) 1683 omapfb_ops.fb_mmap = omapfb_mmap; 1684 init_state++; 1685 1686 r = planes_init(fbdev); 1687 if (r) 1688 goto cleanup; 1689 init_state++; 1690 1691 #ifdef CONFIG_FB_OMAP_DMA_TUNE 1692 /* Set DMA priority for EMIFF access to highest */ 1693 omap_set_dma_priority(0, OMAP_DMA_PORT_EMIFF, 15); 1694 #endif 1695 1696 r = ctrl_change_mode(fbdev->fb_info[0]); 1697 if (r) { 1698 dev_err(fbdev->dev, "mode setting failed\n"); 1699 goto cleanup; 1700 } 1701 1702 /* GFX plane is enabled by default */ 1703 r = fbdev->ctrl->enable_plane(OMAPFB_PLANE_GFX, 1); 1704 if (r) 1705 goto cleanup; 1706 1707 omapfb_set_update_mode(fbdev, manual_update ? 1708 OMAPFB_MANUAL_UPDATE : OMAPFB_AUTO_UPDATE); 1709 init_state++; 1710 1711 if (fbdev->panel->enable) { 1712 r = fbdev->panel->enable(fbdev->panel); 1713 if (r) 1714 goto cleanup; 1715 } 1716 init_state++; 1717 1718 r = omapfb_register_sysfs(fbdev); 1719 if (r) 1720 goto cleanup; 1721 init_state++; 1722 1723 vram = 0; 1724 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { 1725 r = register_framebuffer(fbdev->fb_info[i]); 1726 if (r != 0) { 1727 dev_err(fbdev->dev, 1728 "registering framebuffer %d failed\n", i); 1729 goto cleanup; 1730 } 1731 vram += fbdev->mem_desc.region[i].size; 1732 } 1733 1734 fbdev->state = OMAPFB_ACTIVE; 1735 1736 panel = fbdev->panel; 1737 phz = panel->pixel_clock * 1000; 1738 hhz = phz * 10 / (panel->hfp + panel->x_res + panel->hbp + panel->hsw); 1739 vhz = hhz / (panel->vfp + panel->y_res + panel->vbp + panel->vsw); 1740 1741 omapfb_dev = fbdev; 1742 1743 pr_info("omapfb: Framebuffer initialized. Total vram %lu planes %d\n", 1744 vram, fbdev->mem_desc.region_cnt); 1745 pr_info("omapfb: Pixclock %lu kHz hfreq %lu.%lu kHz " 1746 "vfreq %lu.%lu Hz\n", 1747 phz / 1000, hhz / 10000, hhz % 10, vhz / 10, vhz % 10); 1748 1749 return 0; 1750 1751 cleanup: 1752 omapfb_free_resources(fbdev, init_state); 1753 1754 return r; 1755 } 1756 1757 static int omapfb_probe(struct platform_device *pdev) 1758 { 1759 int r; 1760 1761 BUG_ON(fbdev_pdev != NULL); 1762 1763 r = platform_device_register(&omapdss_device); 1764 if (r) { 1765 dev_err(&pdev->dev, "can't register omapdss device\n"); 1766 return r; 1767 } 1768 1769 /* Delay actual initialization until the LCD is registered */ 1770 fbdev_pdev = pdev; 1771 if (fbdev_panel != NULL) 1772 omapfb_do_probe(fbdev_pdev, fbdev_panel); 1773 return 0; 1774 } 1775 1776 void omapfb_register_panel(struct lcd_panel *panel) 1777 { 1778 BUG_ON(fbdev_panel != NULL); 1779 1780 fbdev_panel = panel; 1781 if (fbdev_pdev != NULL) 1782 omapfb_do_probe(fbdev_pdev, fbdev_panel); 1783 } 1784 EXPORT_SYMBOL_GPL(omapfb_register_panel); 1785 1786 /* Called when the device is being detached from the driver */ 1787 static int omapfb_remove(struct platform_device *pdev) 1788 { 1789 struct omapfb_device *fbdev = platform_get_drvdata(pdev); 1790 enum omapfb_state saved_state = fbdev->state; 1791 1792 /* FIXME: wait till completion of pending events */ 1793 1794 fbdev->state = OMAPFB_DISABLED; 1795 omapfb_free_resources(fbdev, saved_state); 1796 1797 platform_device_unregister(&omapdss_device); 1798 fbdev->dssdev = NULL; 1799 1800 return 0; 1801 } 1802 1803 /* PM suspend */ 1804 static int omapfb_suspend(struct platform_device *pdev, pm_message_t mesg) 1805 { 1806 struct omapfb_device *fbdev = platform_get_drvdata(pdev); 1807 1808 if (fbdev != NULL) 1809 omapfb_blank(FB_BLANK_POWERDOWN, fbdev->fb_info[0]); 1810 return 0; 1811 } 1812 1813 /* PM resume */ 1814 static int omapfb_resume(struct platform_device *pdev) 1815 { 1816 struct omapfb_device *fbdev = platform_get_drvdata(pdev); 1817 1818 if (fbdev != NULL) 1819 omapfb_blank(FB_BLANK_UNBLANK, fbdev->fb_info[0]); 1820 return 0; 1821 } 1822 1823 static struct platform_driver omapfb_driver = { 1824 .probe = omapfb_probe, 1825 .remove = omapfb_remove, 1826 .suspend = omapfb_suspend, 1827 .resume = omapfb_resume, 1828 .driver = { 1829 .name = MODULE_NAME, 1830 }, 1831 }; 1832 1833 #ifndef MODULE 1834 1835 /* Process kernel command line parameters */ 1836 static int __init omapfb_setup(char *options) 1837 { 1838 char *this_opt = NULL; 1839 int r = 0; 1840 1841 pr_debug("omapfb: options %s\n", options); 1842 1843 if (!options || !*options) 1844 return 0; 1845 1846 while (!r && (this_opt = strsep(&options, ",")) != NULL) { 1847 if (!strncmp(this_opt, "accel", 5)) 1848 def_accel = 1; 1849 else if (!strncmp(this_opt, "vram:", 5)) { 1850 char *suffix; 1851 unsigned long vram; 1852 vram = (simple_strtoul(this_opt + 5, &suffix, 0)); 1853 switch (suffix[0]) { 1854 case '\0': 1855 break; 1856 case 'm': 1857 case 'M': 1858 vram *= 1024; 1859 fallthrough; 1860 case 'k': 1861 case 'K': 1862 vram *= 1024; 1863 break; 1864 default: 1865 pr_debug("omapfb: invalid vram suffix %c\n", 1866 suffix[0]); 1867 r = -1; 1868 } 1869 def_vram[def_vram_cnt++] = vram; 1870 } 1871 else if (!strncmp(this_opt, "vxres:", 6)) 1872 def_vxres = simple_strtoul(this_opt + 6, NULL, 0); 1873 else if (!strncmp(this_opt, "vyres:", 6)) 1874 def_vyres = simple_strtoul(this_opt + 6, NULL, 0); 1875 else if (!strncmp(this_opt, "rotate:", 7)) 1876 def_rotate = (simple_strtoul(this_opt + 7, NULL, 0)); 1877 else if (!strncmp(this_opt, "mirror:", 7)) 1878 def_mirror = (simple_strtoul(this_opt + 7, NULL, 0)); 1879 else if (!strncmp(this_opt, "manual_update", 13)) 1880 manual_update = 1; 1881 else { 1882 pr_debug("omapfb: invalid option\n"); 1883 r = -1; 1884 } 1885 } 1886 1887 return r; 1888 } 1889 1890 #endif 1891 1892 /* Register both the driver and the device */ 1893 static int __init omapfb_init(void) 1894 { 1895 #ifndef MODULE 1896 char *option; 1897 1898 if (fb_get_options("omapfb", &option)) 1899 return -ENODEV; 1900 omapfb_setup(option); 1901 #endif 1902 /* Register the driver with LDM */ 1903 if (platform_driver_register(&omapfb_driver)) { 1904 pr_debug("failed to register omapfb driver\n"); 1905 return -ENODEV; 1906 } 1907 1908 return 0; 1909 } 1910 1911 static void __exit omapfb_cleanup(void) 1912 { 1913 platform_driver_unregister(&omapfb_driver); 1914 } 1915 1916 module_param_named(accel, def_accel, uint, 0664); 1917 module_param_array_named(vram, def_vram, ulong, &def_vram_cnt, 0664); 1918 module_param_named(vxres, def_vxres, long, 0664); 1919 module_param_named(vyres, def_vyres, long, 0664); 1920 module_param_named(rotate, def_rotate, uint, 0664); 1921 module_param_named(mirror, def_mirror, uint, 0664); 1922 module_param_named(manual_update, manual_update, bool, 0664); 1923 1924 module_init(omapfb_init); 1925 module_exit(omapfb_cleanup); 1926 1927 MODULE_DESCRIPTION("TI OMAP framebuffer driver"); 1928 MODULE_AUTHOR("Imre Deak <imre.deak@nokia.com>"); 1929 MODULE_LICENSE("GPL"); 1930