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 <linux/soc/ti/omap1-soc.h> 24 #include "omapfb.h" 25 #include "lcdc.h" 26 27 #define MODULE_NAME "omapfb" 28 29 static unsigned int def_accel; 30 static unsigned long def_vram[OMAPFB_PLANE_NUM]; 31 static unsigned int def_vram_cnt; 32 static unsigned long def_vxres; 33 static unsigned long def_vyres; 34 static unsigned int def_rotate; 35 static unsigned int def_mirror; 36 37 static bool manual_update = IS_BUILTIN(CONFIG_FB_OMAP_MANUAL_UPDATE); 38 39 static struct platform_device *fbdev_pdev; 40 static struct lcd_panel *fbdev_panel; 41 static struct omapfb_device *omapfb_dev; 42 43 struct caps_table_struct { 44 unsigned long flag; 45 const char *name; 46 }; 47 48 static const struct caps_table_struct ctrl_caps[] = { 49 { OMAPFB_CAPS_MANUAL_UPDATE, "manual update" }, 50 { OMAPFB_CAPS_TEARSYNC, "tearing synchronization" }, 51 { OMAPFB_CAPS_PLANE_RELOCATE_MEM, "relocate plane memory" }, 52 { OMAPFB_CAPS_PLANE_SCALE, "scale plane" }, 53 { OMAPFB_CAPS_WINDOW_PIXEL_DOUBLE, "pixel double window" }, 54 { OMAPFB_CAPS_WINDOW_SCALE, "scale window" }, 55 { OMAPFB_CAPS_WINDOW_OVERLAY, "overlay window" }, 56 { OMAPFB_CAPS_WINDOW_ROTATE, "rotate window" }, 57 { OMAPFB_CAPS_SET_BACKLIGHT, "backlight setting" }, 58 }; 59 60 static const struct caps_table_struct color_caps[] = { 61 { 1 << OMAPFB_COLOR_RGB565, "RGB565", }, 62 { 1 << OMAPFB_COLOR_YUV422, "YUV422", }, 63 { 1 << OMAPFB_COLOR_YUV420, "YUV420", }, 64 { 1 << OMAPFB_COLOR_CLUT_8BPP, "CLUT8", }, 65 { 1 << OMAPFB_COLOR_CLUT_4BPP, "CLUT4", }, 66 { 1 << OMAPFB_COLOR_CLUT_2BPP, "CLUT2", }, 67 { 1 << OMAPFB_COLOR_CLUT_1BPP, "CLUT1", }, 68 { 1 << OMAPFB_COLOR_RGB444, "RGB444", }, 69 { 1 << OMAPFB_COLOR_YUY422, "YUY422", }, 70 }; 71 72 static void omapdss_release(struct device *dev) 73 { 74 } 75 76 /* dummy device for clocks */ 77 static struct platform_device omapdss_device = { 78 .name = "omapdss_dss", 79 .id = -1, 80 .dev = { 81 .release = omapdss_release, 82 }, 83 }; 84 85 /* 86 * --------------------------------------------------------------------------- 87 * LCD panel 88 * --------------------------------------------------------------------------- 89 */ 90 extern struct lcd_ctrl hwa742_ctrl; 91 92 static const struct lcd_ctrl *ctrls[] = { 93 &omap1_int_ctrl, 94 95 #ifdef CONFIG_FB_OMAP_LCDC_HWA742 96 &hwa742_ctrl, 97 #endif 98 }; 99 100 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL 101 extern struct lcd_ctrl_extif omap1_ext_if; 102 #endif 103 104 static void omapfb_rqueue_lock(struct omapfb_device *fbdev) 105 { 106 mutex_lock(&fbdev->rqueue_mutex); 107 } 108 109 static void omapfb_rqueue_unlock(struct omapfb_device *fbdev) 110 { 111 mutex_unlock(&fbdev->rqueue_mutex); 112 } 113 114 /* 115 * --------------------------------------------------------------------------- 116 * LCD controller and LCD DMA 117 * --------------------------------------------------------------------------- 118 */ 119 /* 120 * Allocate resources needed for LCD controller and LCD DMA operations. Video 121 * memory is allocated from system memory according to the virtual display 122 * size, except if a bigger memory size is specified explicitly as a kernel 123 * parameter. 124 */ 125 static int ctrl_init(struct omapfb_device *fbdev) 126 { 127 int r; 128 int i; 129 130 /* kernel/module vram parameters override boot tags/board config */ 131 if (def_vram_cnt) { 132 for (i = 0; i < def_vram_cnt; i++) 133 fbdev->mem_desc.region[i].size = 134 PAGE_ALIGN(def_vram[i]); 135 fbdev->mem_desc.region_cnt = i; 136 } 137 138 if (!fbdev->mem_desc.region_cnt) { 139 struct lcd_panel *panel = fbdev->panel; 140 int def_size; 141 int bpp = panel->bpp; 142 143 /* 12 bpp is packed in 16 bits */ 144 if (bpp == 12) 145 bpp = 16; 146 def_size = def_vxres * def_vyres * bpp / 8; 147 fbdev->mem_desc.region_cnt = 1; 148 fbdev->mem_desc.region[0].size = PAGE_ALIGN(def_size); 149 } 150 r = fbdev->ctrl->init(fbdev, 0, &fbdev->mem_desc); 151 if (r < 0) { 152 dev_err(fbdev->dev, "controller initialization failed (%d)\n", 153 r); 154 return r; 155 } 156 157 #ifdef DEBUG 158 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { 159 dev_dbg(fbdev->dev, "region%d phys %08x virt %p size=%lu\n", 160 i, 161 fbdev->mem_desc.region[i].paddr, 162 fbdev->mem_desc.region[i].vaddr, 163 fbdev->mem_desc.region[i].size); 164 } 165 #endif 166 return 0; 167 } 168 169 static void ctrl_cleanup(struct omapfb_device *fbdev) 170 { 171 fbdev->ctrl->cleanup(); 172 } 173 174 /* Must be called with fbdev->rqueue_mutex held. */ 175 static int ctrl_change_mode(struct fb_info *fbi) 176 { 177 int r; 178 unsigned long offset; 179 struct omapfb_plane_struct *plane = fbi->par; 180 struct omapfb_device *fbdev = plane->fbdev; 181 struct fb_var_screeninfo *var = &fbi->var; 182 183 offset = var->yoffset * fbi->fix.line_length + 184 var->xoffset * var->bits_per_pixel / 8; 185 186 if (fbdev->ctrl->sync) 187 fbdev->ctrl->sync(); 188 r = fbdev->ctrl->setup_plane(plane->idx, plane->info.channel_out, 189 offset, var->xres_virtual, 190 plane->info.pos_x, plane->info.pos_y, 191 var->xres, var->yres, plane->color_mode); 192 if (r < 0) 193 return r; 194 195 if (fbdev->ctrl->set_rotate != NULL) { 196 r = fbdev->ctrl->set_rotate(var->rotate); 197 if (r < 0) 198 return r; 199 } 200 201 if (fbdev->ctrl->set_scale != NULL) 202 r = fbdev->ctrl->set_scale(plane->idx, 203 var->xres, var->yres, 204 plane->info.out_width, 205 plane->info.out_height); 206 207 return r; 208 } 209 210 /* 211 * --------------------------------------------------------------------------- 212 * fbdev framework callbacks and the ioctl interface 213 * --------------------------------------------------------------------------- 214 */ 215 /* Called each time the omapfb device is opened */ 216 static int omapfb_open(struct fb_info *info, int user) 217 { 218 return 0; 219 } 220 221 static void omapfb_sync(struct fb_info *info); 222 223 /* Called when the omapfb device is closed. We make sure that any pending 224 * gfx DMA operations are ended, before we return. */ 225 static int omapfb_release(struct fb_info *info, int user) 226 { 227 omapfb_sync(info); 228 return 0; 229 } 230 231 /* Store a single color palette entry into a pseudo palette or the hardware 232 * palette if one is available. For now we support only 16bpp and thus store 233 * the entry only to the pseudo palette. 234 */ 235 static int _setcolreg(struct fb_info *info, u_int regno, u_int red, u_int green, 236 u_int blue, u_int transp, int update_hw_pal) 237 { 238 struct omapfb_plane_struct *plane = info->par; 239 struct omapfb_device *fbdev = plane->fbdev; 240 struct fb_var_screeninfo *var = &info->var; 241 int r = 0; 242 243 switch (plane->color_mode) { 244 case OMAPFB_COLOR_YUV422: 245 case OMAPFB_COLOR_YUV420: 246 case OMAPFB_COLOR_YUY422: 247 r = -EINVAL; 248 break; 249 case OMAPFB_COLOR_CLUT_8BPP: 250 case OMAPFB_COLOR_CLUT_4BPP: 251 case OMAPFB_COLOR_CLUT_2BPP: 252 case OMAPFB_COLOR_CLUT_1BPP: 253 if (fbdev->ctrl->setcolreg) 254 r = fbdev->ctrl->setcolreg(regno, red, green, blue, 255 transp, update_hw_pal); 256 fallthrough; 257 case OMAPFB_COLOR_RGB565: 258 case OMAPFB_COLOR_RGB444: 259 if (r != 0) 260 break; 261 262 if (regno < 16) { 263 u16 pal; 264 pal = ((red >> (16 - var->red.length)) << 265 var->red.offset) | 266 ((green >> (16 - var->green.length)) << 267 var->green.offset) | 268 (blue >> (16 - var->blue.length)); 269 ((u32 *)(info->pseudo_palette))[regno] = pal; 270 } 271 break; 272 default: 273 BUG(); 274 } 275 return r; 276 } 277 278 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, 279 u_int transp, struct fb_info *info) 280 { 281 return _setcolreg(info, regno, red, green, blue, transp, 1); 282 } 283 284 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info) 285 { 286 int count, index, r; 287 u16 *red, *green, *blue, *transp; 288 u16 trans = 0xffff; 289 290 red = cmap->red; 291 green = cmap->green; 292 blue = cmap->blue; 293 transp = cmap->transp; 294 index = cmap->start; 295 296 for (count = 0; count < cmap->len; count++) { 297 if (transp) 298 trans = *transp++; 299 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans, 300 count == cmap->len - 1); 301 if (r != 0) 302 return r; 303 } 304 305 return 0; 306 } 307 308 static int omapfb_update_full_screen(struct fb_info *fbi); 309 310 static int omapfb_blank(int blank, struct fb_info *fbi) 311 { 312 struct omapfb_plane_struct *plane = fbi->par; 313 struct omapfb_device *fbdev = plane->fbdev; 314 int do_update = 0; 315 int r = 0; 316 317 omapfb_rqueue_lock(fbdev); 318 switch (blank) { 319 case FB_BLANK_UNBLANK: 320 if (fbdev->state == OMAPFB_SUSPENDED) { 321 if (fbdev->ctrl->resume) 322 fbdev->ctrl->resume(); 323 if (fbdev->panel->enable) 324 fbdev->panel->enable(fbdev->panel); 325 fbdev->state = OMAPFB_ACTIVE; 326 if (fbdev->ctrl->get_update_mode() == 327 OMAPFB_MANUAL_UPDATE) 328 do_update = 1; 329 } 330 break; 331 case FB_BLANK_POWERDOWN: 332 if (fbdev->state == OMAPFB_ACTIVE) { 333 if (fbdev->panel->disable) 334 fbdev->panel->disable(fbdev->panel); 335 if (fbdev->ctrl->suspend) 336 fbdev->ctrl->suspend(); 337 fbdev->state = OMAPFB_SUSPENDED; 338 } 339 break; 340 default: 341 r = -EINVAL; 342 } 343 omapfb_rqueue_unlock(fbdev); 344 345 if (r == 0 && do_update) 346 r = omapfb_update_full_screen(fbi); 347 348 return r; 349 } 350 351 static void omapfb_sync(struct fb_info *fbi) 352 { 353 struct omapfb_plane_struct *plane = fbi->par; 354 struct omapfb_device *fbdev = plane->fbdev; 355 356 omapfb_rqueue_lock(fbdev); 357 if (fbdev->ctrl->sync) 358 fbdev->ctrl->sync(); 359 omapfb_rqueue_unlock(fbdev); 360 } 361 362 /* 363 * Set fb_info.fix fields and also updates fbdev. 364 * When calling this fb_info.var must be set up already. 365 */ 366 static void set_fb_fix(struct fb_info *fbi, int from_init) 367 { 368 struct fb_fix_screeninfo *fix = &fbi->fix; 369 struct fb_var_screeninfo *var = &fbi->var; 370 struct omapfb_plane_struct *plane = fbi->par; 371 struct omapfb_mem_region *rg; 372 int bpp; 373 374 rg = &plane->fbdev->mem_desc.region[plane->idx]; 375 fbi->screen_base = rg->vaddr; 376 377 if (!from_init) { 378 mutex_lock(&fbi->mm_lock); 379 fix->smem_start = rg->paddr; 380 fix->smem_len = rg->size; 381 mutex_unlock(&fbi->mm_lock); 382 } else { 383 fix->smem_start = rg->paddr; 384 fix->smem_len = rg->size; 385 } 386 387 fix->type = FB_TYPE_PACKED_PIXELS; 388 bpp = var->bits_per_pixel; 389 if (var->nonstd) 390 fix->visual = FB_VISUAL_PSEUDOCOLOR; 391 else switch (var->bits_per_pixel) { 392 case 16: 393 case 12: 394 fix->visual = FB_VISUAL_TRUECOLOR; 395 /* 12bpp is stored in 16 bits */ 396 bpp = 16; 397 break; 398 case 1: 399 case 2: 400 case 4: 401 case 8: 402 fix->visual = FB_VISUAL_PSEUDOCOLOR; 403 break; 404 } 405 fix->accel = FB_ACCEL_OMAP1610; 406 fix->line_length = var->xres_virtual * bpp / 8; 407 } 408 409 static int set_color_mode(struct omapfb_plane_struct *plane, 410 struct fb_var_screeninfo *var) 411 { 412 switch (var->nonstd) { 413 case 0: 414 break; 415 case OMAPFB_COLOR_YUV422: 416 var->bits_per_pixel = 16; 417 plane->color_mode = var->nonstd; 418 return 0; 419 case OMAPFB_COLOR_YUV420: 420 var->bits_per_pixel = 12; 421 plane->color_mode = var->nonstd; 422 return 0; 423 case OMAPFB_COLOR_YUY422: 424 var->bits_per_pixel = 16; 425 plane->color_mode = var->nonstd; 426 return 0; 427 default: 428 return -EINVAL; 429 } 430 431 switch (var->bits_per_pixel) { 432 case 1: 433 plane->color_mode = OMAPFB_COLOR_CLUT_1BPP; 434 return 0; 435 case 2: 436 plane->color_mode = OMAPFB_COLOR_CLUT_2BPP; 437 return 0; 438 case 4: 439 plane->color_mode = OMAPFB_COLOR_CLUT_4BPP; 440 return 0; 441 case 8: 442 plane->color_mode = OMAPFB_COLOR_CLUT_8BPP; 443 return 0; 444 case 12: 445 var->bits_per_pixel = 16; 446 fallthrough; 447 case 16: 448 if (plane->fbdev->panel->bpp == 12) 449 plane->color_mode = OMAPFB_COLOR_RGB444; 450 else 451 plane->color_mode = OMAPFB_COLOR_RGB565; 452 return 0; 453 default: 454 return -EINVAL; 455 } 456 } 457 458 /* 459 * Check the values in var against our capabilities and in case of out of 460 * bound values try to adjust them. 461 */ 462 static int set_fb_var(struct fb_info *fbi, 463 struct fb_var_screeninfo *var) 464 { 465 int bpp; 466 unsigned long max_frame_size; 467 unsigned long line_size; 468 int xres_min, xres_max; 469 int yres_min, yres_max; 470 struct omapfb_plane_struct *plane = fbi->par; 471 struct omapfb_device *fbdev = plane->fbdev; 472 struct lcd_panel *panel = fbdev->panel; 473 474 if (set_color_mode(plane, var) < 0) 475 return -EINVAL; 476 477 bpp = var->bits_per_pixel; 478 if (plane->color_mode == OMAPFB_COLOR_RGB444) 479 bpp = 16; 480 481 switch (var->rotate) { 482 case 0: 483 case 180: 484 xres_min = OMAPFB_PLANE_XRES_MIN; 485 xres_max = panel->x_res; 486 yres_min = OMAPFB_PLANE_YRES_MIN; 487 yres_max = panel->y_res; 488 if (cpu_is_omap15xx()) { 489 var->xres = panel->x_res; 490 var->yres = panel->y_res; 491 } 492 break; 493 case 90: 494 case 270: 495 xres_min = OMAPFB_PLANE_YRES_MIN; 496 xres_max = panel->y_res; 497 yres_min = OMAPFB_PLANE_XRES_MIN; 498 yres_max = panel->x_res; 499 if (cpu_is_omap15xx()) { 500 var->xres = panel->y_res; 501 var->yres = panel->x_res; 502 } 503 break; 504 default: 505 return -EINVAL; 506 } 507 508 if (var->xres < xres_min) 509 var->xres = xres_min; 510 if (var->yres < yres_min) 511 var->yres = yres_min; 512 if (var->xres > xres_max) 513 var->xres = xres_max; 514 if (var->yres > yres_max) 515 var->yres = yres_max; 516 517 if (var->xres_virtual < var->xres) 518 var->xres_virtual = var->xres; 519 if (var->yres_virtual < var->yres) 520 var->yres_virtual = var->yres; 521 max_frame_size = fbdev->mem_desc.region[plane->idx].size; 522 line_size = var->xres_virtual * bpp / 8; 523 if (line_size * var->yres_virtual > max_frame_size) { 524 /* Try to keep yres_virtual first */ 525 line_size = max_frame_size / var->yres_virtual; 526 var->xres_virtual = line_size * 8 / bpp; 527 if (var->xres_virtual < var->xres) { 528 /* Still doesn't fit. Shrink yres_virtual too */ 529 var->xres_virtual = var->xres; 530 line_size = var->xres * bpp / 8; 531 var->yres_virtual = max_frame_size / line_size; 532 } 533 /* Recheck this, as the virtual size changed. */ 534 if (var->xres_virtual < var->xres) 535 var->xres = var->xres_virtual; 536 if (var->yres_virtual < var->yres) 537 var->yres = var->yres_virtual; 538 if (var->xres < xres_min || var->yres < yres_min) 539 return -EINVAL; 540 } 541 if (var->xres + var->xoffset > var->xres_virtual) 542 var->xoffset = var->xres_virtual - var->xres; 543 if (var->yres + var->yoffset > var->yres_virtual) 544 var->yoffset = var->yres_virtual - var->yres; 545 546 if (plane->color_mode == OMAPFB_COLOR_RGB444) { 547 var->red.offset = 8; var->red.length = 4; 548 var->red.msb_right = 0; 549 var->green.offset = 4; var->green.length = 4; 550 var->green.msb_right = 0; 551 var->blue.offset = 0; var->blue.length = 4; 552 var->blue.msb_right = 0; 553 } else { 554 var->red.offset = 11; var->red.length = 5; 555 var->red.msb_right = 0; 556 var->green.offset = 5; var->green.length = 6; 557 var->green.msb_right = 0; 558 var->blue.offset = 0; var->blue.length = 5; 559 var->blue.msb_right = 0; 560 } 561 562 var->height = -1; 563 var->width = -1; 564 var->grayscale = 0; 565 566 /* pixclock in ps, the rest in pixclock */ 567 var->pixclock = 10000000 / (panel->pixel_clock / 100); 568 var->left_margin = panel->hfp; 569 var->right_margin = panel->hbp; 570 var->upper_margin = panel->vfp; 571 var->lower_margin = panel->vbp; 572 var->hsync_len = panel->hsw; 573 var->vsync_len = panel->vsw; 574 575 /* TODO: get these from panel->config */ 576 var->vmode = FB_VMODE_NONINTERLACED; 577 var->sync = 0; 578 579 return 0; 580 } 581 582 583 /* 584 * Set new x,y offsets in the virtual display for the visible area and switch 585 * to the new mode. 586 */ 587 static int omapfb_pan_display(struct fb_var_screeninfo *var, 588 struct fb_info *fbi) 589 { 590 struct omapfb_plane_struct *plane = fbi->par; 591 struct omapfb_device *fbdev = plane->fbdev; 592 int r = 0; 593 594 omapfb_rqueue_lock(fbdev); 595 if (var->xoffset != fbi->var.xoffset || 596 var->yoffset != fbi->var.yoffset) { 597 struct fb_var_screeninfo *new_var = &fbdev->new_var; 598 599 memcpy(new_var, &fbi->var, sizeof(*new_var)); 600 new_var->xoffset = var->xoffset; 601 new_var->yoffset = var->yoffset; 602 if (set_fb_var(fbi, new_var)) 603 r = -EINVAL; 604 else { 605 memcpy(&fbi->var, new_var, sizeof(*new_var)); 606 ctrl_change_mode(fbi); 607 } 608 } 609 omapfb_rqueue_unlock(fbdev); 610 611 return r; 612 } 613 614 /* Set mirror to vertical axis and switch to the new mode. */ 615 static int omapfb_mirror(struct fb_info *fbi, int mirror) 616 { 617 struct omapfb_plane_struct *plane = fbi->par; 618 struct omapfb_device *fbdev = plane->fbdev; 619 int r = 0; 620 621 omapfb_rqueue_lock(fbdev); 622 mirror = mirror ? 1 : 0; 623 if (cpu_is_omap15xx()) 624 r = -EINVAL; 625 else if (mirror != plane->info.mirror) { 626 plane->info.mirror = mirror; 627 r = ctrl_change_mode(fbi); 628 } 629 omapfb_rqueue_unlock(fbdev); 630 631 return r; 632 } 633 634 /* 635 * Check values in var, try to adjust them in case of out of bound values if 636 * possible, or return error. 637 */ 638 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi) 639 { 640 struct omapfb_plane_struct *plane = fbi->par; 641 struct omapfb_device *fbdev = plane->fbdev; 642 int r; 643 644 omapfb_rqueue_lock(fbdev); 645 if (fbdev->ctrl->sync != NULL) 646 fbdev->ctrl->sync(); 647 r = set_fb_var(fbi, var); 648 omapfb_rqueue_unlock(fbdev); 649 650 return r; 651 } 652 653 /* 654 * Switch to a new mode. The parameters for it has been check already by 655 * omapfb_check_var. 656 */ 657 static int omapfb_set_par(struct fb_info *fbi) 658 { 659 struct omapfb_plane_struct *plane = fbi->par; 660 struct omapfb_device *fbdev = plane->fbdev; 661 int r = 0; 662 663 omapfb_rqueue_lock(fbdev); 664 set_fb_fix(fbi, 0); 665 r = ctrl_change_mode(fbi); 666 omapfb_rqueue_unlock(fbdev); 667 668 return r; 669 } 670 671 static int omapfb_update_window_async(struct fb_info *fbi, 672 struct omapfb_update_window *win, 673 void (*callback)(void *), 674 void *callback_data) 675 { 676 int xres, yres; 677 struct omapfb_plane_struct *plane = fbi->par; 678 struct omapfb_device *fbdev = plane->fbdev; 679 struct fb_var_screeninfo *var = &fbi->var; 680 681 switch (var->rotate) { 682 case 0: 683 case 180: 684 xres = fbdev->panel->x_res; 685 yres = fbdev->panel->y_res; 686 break; 687 case 90: 688 case 270: 689 xres = fbdev->panel->y_res; 690 yres = fbdev->panel->x_res; 691 break; 692 default: 693 return -EINVAL; 694 } 695 696 if (win->x >= xres || win->y >= yres || 697 win->out_x > xres || win->out_y > yres) 698 return -EINVAL; 699 700 if (!fbdev->ctrl->update_window || 701 fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE) 702 return -ENODEV; 703 704 if (win->x + win->width > xres) 705 win->width = xres - win->x; 706 if (win->y + win->height > yres) 707 win->height = yres - win->y; 708 if (win->out_x + win->out_width > xres) 709 win->out_width = xres - win->out_x; 710 if (win->out_y + win->out_height > yres) 711 win->out_height = yres - win->out_y; 712 if (!win->width || !win->height || !win->out_width || !win->out_height) 713 return 0; 714 715 return fbdev->ctrl->update_window(fbi, win, callback, callback_data); 716 } 717 718 static int omapfb_update_win(struct fb_info *fbi, 719 struct omapfb_update_window *win) 720 { 721 struct omapfb_plane_struct *plane = fbi->par; 722 int ret; 723 724 omapfb_rqueue_lock(plane->fbdev); 725 ret = omapfb_update_window_async(fbi, win, NULL, NULL); 726 omapfb_rqueue_unlock(plane->fbdev); 727 728 return ret; 729 } 730 731 static int omapfb_update_full_screen(struct fb_info *fbi) 732 { 733 struct omapfb_plane_struct *plane = fbi->par; 734 struct omapfb_device *fbdev = plane->fbdev; 735 struct omapfb_update_window win; 736 int r; 737 738 if (!fbdev->ctrl->update_window || 739 fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE) 740 return -ENODEV; 741 742 win.x = 0; 743 win.y = 0; 744 win.width = fbi->var.xres; 745 win.height = fbi->var.yres; 746 win.out_x = 0; 747 win.out_y = 0; 748 win.out_width = fbi->var.xres; 749 win.out_height = fbi->var.yres; 750 win.format = 0; 751 752 omapfb_rqueue_lock(fbdev); 753 r = fbdev->ctrl->update_window(fbi, &win, NULL, NULL); 754 omapfb_rqueue_unlock(fbdev); 755 756 return r; 757 } 758 759 static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi) 760 { 761 struct omapfb_plane_struct *plane = fbi->par; 762 struct omapfb_device *fbdev = plane->fbdev; 763 struct lcd_panel *panel = fbdev->panel; 764 struct omapfb_plane_info old_info; 765 int r = 0; 766 767 if (pi->pos_x + pi->out_width > panel->x_res || 768 pi->pos_y + pi->out_height > panel->y_res) 769 return -EINVAL; 770 771 omapfb_rqueue_lock(fbdev); 772 if (pi->enabled && !fbdev->mem_desc.region[plane->idx].size) { 773 /* 774 * This plane's memory was freed, can't enable it 775 * until it's reallocated. 776 */ 777 r = -EINVAL; 778 goto out; 779 } 780 old_info = plane->info; 781 plane->info = *pi; 782 if (pi->enabled) { 783 r = ctrl_change_mode(fbi); 784 if (r < 0) { 785 plane->info = old_info; 786 goto out; 787 } 788 } 789 r = fbdev->ctrl->enable_plane(plane->idx, pi->enabled); 790 if (r < 0) { 791 plane->info = old_info; 792 goto out; 793 } 794 out: 795 omapfb_rqueue_unlock(fbdev); 796 return r; 797 } 798 799 static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi) 800 { 801 struct omapfb_plane_struct *plane = fbi->par; 802 803 *pi = plane->info; 804 return 0; 805 } 806 807 static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi) 808 { 809 struct omapfb_plane_struct *plane = fbi->par; 810 struct omapfb_device *fbdev = plane->fbdev; 811 struct omapfb_mem_region *rg = &fbdev->mem_desc.region[plane->idx]; 812 size_t size; 813 int r = 0; 814 815 if (fbdev->ctrl->setup_mem == NULL) 816 return -ENODEV; 817 if (mi->type != OMAPFB_MEMTYPE_SDRAM) 818 return -EINVAL; 819 820 size = PAGE_ALIGN(mi->size); 821 omapfb_rqueue_lock(fbdev); 822 if (plane->info.enabled) { 823 r = -EBUSY; 824 goto out; 825 } 826 if (rg->size != size || rg->type != mi->type) { 827 struct fb_var_screeninfo *new_var = &fbdev->new_var; 828 unsigned long old_size = rg->size; 829 u8 old_type = rg->type; 830 unsigned long paddr; 831 832 rg->size = size; 833 rg->type = mi->type; 834 /* 835 * size == 0 is a special case, for which we 836 * don't check / adjust the screen parameters. 837 * This isn't a problem since the plane can't 838 * be reenabled unless its size is > 0. 839 */ 840 if (old_size != size && size) { 841 if (size) { 842 memcpy(new_var, &fbi->var, sizeof(*new_var)); 843 r = set_fb_var(fbi, new_var); 844 if (r < 0) 845 goto out; 846 } 847 } 848 849 if (fbdev->ctrl->sync) 850 fbdev->ctrl->sync(); 851 r = fbdev->ctrl->setup_mem(plane->idx, size, mi->type, &paddr); 852 if (r < 0) { 853 /* Revert changes. */ 854 rg->size = old_size; 855 rg->type = old_type; 856 goto out; 857 } 858 rg->paddr = paddr; 859 860 if (old_size != size) { 861 if (size) { 862 memcpy(&fbi->var, new_var, sizeof(fbi->var)); 863 set_fb_fix(fbi, 0); 864 } else { 865 /* 866 * Set these explicitly to indicate that the 867 * plane memory is dealloce'd, the other 868 * screen parameters in var / fix are invalid. 869 */ 870 mutex_lock(&fbi->mm_lock); 871 fbi->fix.smem_start = 0; 872 fbi->fix.smem_len = 0; 873 mutex_unlock(&fbi->mm_lock); 874 } 875 } 876 } 877 out: 878 omapfb_rqueue_unlock(fbdev); 879 880 return r; 881 } 882 883 static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi) 884 { 885 struct omapfb_plane_struct *plane = fbi->par; 886 struct omapfb_device *fbdev = plane->fbdev; 887 struct omapfb_mem_region *rg; 888 889 rg = &fbdev->mem_desc.region[plane->idx]; 890 memset(mi, 0, sizeof(*mi)); 891 mi->size = rg->size; 892 mi->type = rg->type; 893 894 return 0; 895 } 896 897 static int omapfb_set_color_key(struct omapfb_device *fbdev, 898 struct omapfb_color_key *ck) 899 { 900 int r; 901 902 if (!fbdev->ctrl->set_color_key) 903 return -ENODEV; 904 905 omapfb_rqueue_lock(fbdev); 906 r = fbdev->ctrl->set_color_key(ck); 907 omapfb_rqueue_unlock(fbdev); 908 909 return r; 910 } 911 912 static int omapfb_get_color_key(struct omapfb_device *fbdev, 913 struct omapfb_color_key *ck) 914 { 915 int r; 916 917 if (!fbdev->ctrl->get_color_key) 918 return -ENODEV; 919 920 omapfb_rqueue_lock(fbdev); 921 r = fbdev->ctrl->get_color_key(ck); 922 omapfb_rqueue_unlock(fbdev); 923 924 return r; 925 } 926 927 static struct blocking_notifier_head omapfb_client_list[OMAPFB_PLANE_NUM]; 928 static int notifier_inited; 929 930 static void omapfb_init_notifier(void) 931 { 932 int i; 933 934 for (i = 0; i < OMAPFB_PLANE_NUM; i++) 935 BLOCKING_INIT_NOTIFIER_HEAD(&omapfb_client_list[i]); 936 } 937 938 int omapfb_register_client(struct omapfb_notifier_block *omapfb_nb, 939 omapfb_notifier_callback_t callback, 940 void *callback_data) 941 { 942 int r; 943 944 if ((unsigned)omapfb_nb->plane_idx >= OMAPFB_PLANE_NUM) 945 return -EINVAL; 946 947 if (!notifier_inited) { 948 omapfb_init_notifier(); 949 notifier_inited = 1; 950 } 951 952 omapfb_nb->nb.notifier_call = (int (*)(struct notifier_block *, 953 unsigned long, void *))callback; 954 omapfb_nb->data = callback_data; 955 r = blocking_notifier_chain_register( 956 &omapfb_client_list[omapfb_nb->plane_idx], 957 &omapfb_nb->nb); 958 if (r) 959 return r; 960 if (omapfb_dev != NULL && 961 omapfb_dev->ctrl && omapfb_dev->ctrl->bind_client) { 962 omapfb_dev->ctrl->bind_client(omapfb_nb); 963 } 964 965 return 0; 966 } 967 EXPORT_SYMBOL(omapfb_register_client); 968 969 int omapfb_unregister_client(struct omapfb_notifier_block *omapfb_nb) 970 { 971 return blocking_notifier_chain_unregister( 972 &omapfb_client_list[omapfb_nb->plane_idx], &omapfb_nb->nb); 973 } 974 EXPORT_SYMBOL(omapfb_unregister_client); 975 976 void omapfb_notify_clients(struct omapfb_device *fbdev, unsigned long event) 977 { 978 int i; 979 980 if (!notifier_inited) 981 /* no client registered yet */ 982 return; 983 984 for (i = 0; i < OMAPFB_PLANE_NUM; i++) 985 blocking_notifier_call_chain(&omapfb_client_list[i], event, 986 fbdev->fb_info[i]); 987 } 988 EXPORT_SYMBOL(omapfb_notify_clients); 989 990 static int omapfb_set_update_mode(struct omapfb_device *fbdev, 991 enum omapfb_update_mode mode) 992 { 993 int r; 994 995 omapfb_rqueue_lock(fbdev); 996 r = fbdev->ctrl->set_update_mode(mode); 997 omapfb_rqueue_unlock(fbdev); 998 999 return r; 1000 } 1001 1002 static enum omapfb_update_mode omapfb_get_update_mode(struct omapfb_device *fbdev) 1003 { 1004 int r; 1005 1006 omapfb_rqueue_lock(fbdev); 1007 r = fbdev->ctrl->get_update_mode(); 1008 omapfb_rqueue_unlock(fbdev); 1009 1010 return r; 1011 } 1012 1013 static void omapfb_get_caps(struct omapfb_device *fbdev, int plane, 1014 struct omapfb_caps *caps) 1015 { 1016 memset(caps, 0, sizeof(*caps)); 1017 fbdev->ctrl->get_caps(plane, caps); 1018 if (fbdev->panel->get_caps) 1019 caps->ctrl |= fbdev->panel->get_caps(fbdev->panel); 1020 } 1021 1022 /* For lcd testing */ 1023 void omapfb_write_first_pixel(struct omapfb_device *fbdev, u16 pixval) 1024 { 1025 omapfb_rqueue_lock(fbdev); 1026 *(u16 *)fbdev->mem_desc.region[0].vaddr = pixval; 1027 if (fbdev->ctrl->get_update_mode() == OMAPFB_MANUAL_UPDATE) { 1028 struct omapfb_update_window win; 1029 1030 memset(&win, 0, sizeof(win)); 1031 win.width = 2; 1032 win.height = 2; 1033 win.out_width = 2; 1034 win.out_height = 2; 1035 fbdev->ctrl->update_window(fbdev->fb_info[0], &win, NULL, NULL); 1036 } 1037 omapfb_rqueue_unlock(fbdev); 1038 } 1039 EXPORT_SYMBOL(omapfb_write_first_pixel); 1040 1041 /* 1042 * Ioctl interface. Part of the kernel mode frame buffer API is duplicated 1043 * here to be accessible by user mode code. 1044 */ 1045 static int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, 1046 unsigned long arg) 1047 { 1048 struct omapfb_plane_struct *plane = fbi->par; 1049 struct omapfb_device *fbdev = plane->fbdev; 1050 const struct fb_ops *ops = fbi->fbops; 1051 union { 1052 struct omapfb_update_window update_window; 1053 struct omapfb_plane_info plane_info; 1054 struct omapfb_mem_info mem_info; 1055 struct omapfb_color_key color_key; 1056 enum omapfb_update_mode update_mode; 1057 struct omapfb_caps caps; 1058 unsigned int mirror; 1059 int plane_out; 1060 int enable_plane; 1061 } p; 1062 int r = 0; 1063 1064 BUG_ON(!ops); 1065 switch (cmd) { 1066 case OMAPFB_MIRROR: 1067 if (get_user(p.mirror, (int __user *)arg)) 1068 r = -EFAULT; 1069 else 1070 omapfb_mirror(fbi, p.mirror); 1071 break; 1072 case OMAPFB_SYNC_GFX: 1073 omapfb_sync(fbi); 1074 break; 1075 case OMAPFB_VSYNC: 1076 break; 1077 case OMAPFB_SET_UPDATE_MODE: 1078 if (get_user(p.update_mode, (int __user *)arg)) 1079 r = -EFAULT; 1080 else 1081 r = omapfb_set_update_mode(fbdev, p.update_mode); 1082 break; 1083 case OMAPFB_GET_UPDATE_MODE: 1084 p.update_mode = omapfb_get_update_mode(fbdev); 1085 if (put_user(p.update_mode, 1086 (enum omapfb_update_mode __user *)arg)) 1087 r = -EFAULT; 1088 break; 1089 case OMAPFB_UPDATE_WINDOW_OLD: 1090 if (copy_from_user(&p.update_window, (void __user *)arg, 1091 sizeof(struct omapfb_update_window_old))) 1092 r = -EFAULT; 1093 else { 1094 struct omapfb_update_window *u = &p.update_window; 1095 u->out_x = u->x; 1096 u->out_y = u->y; 1097 u->out_width = u->width; 1098 u->out_height = u->height; 1099 memset(u->reserved, 0, sizeof(u->reserved)); 1100 r = omapfb_update_win(fbi, u); 1101 } 1102 break; 1103 case OMAPFB_UPDATE_WINDOW: 1104 if (copy_from_user(&p.update_window, (void __user *)arg, 1105 sizeof(p.update_window))) 1106 r = -EFAULT; 1107 else 1108 r = omapfb_update_win(fbi, &p.update_window); 1109 break; 1110 case OMAPFB_SETUP_PLANE: 1111 if (copy_from_user(&p.plane_info, (void __user *)arg, 1112 sizeof(p.plane_info))) 1113 r = -EFAULT; 1114 else 1115 r = omapfb_setup_plane(fbi, &p.plane_info); 1116 break; 1117 case OMAPFB_QUERY_PLANE: 1118 if ((r = omapfb_query_plane(fbi, &p.plane_info)) < 0) 1119 break; 1120 if (copy_to_user((void __user *)arg, &p.plane_info, 1121 sizeof(p.plane_info))) 1122 r = -EFAULT; 1123 break; 1124 case OMAPFB_SETUP_MEM: 1125 if (copy_from_user(&p.mem_info, (void __user *)arg, 1126 sizeof(p.mem_info))) 1127 r = -EFAULT; 1128 else 1129 r = omapfb_setup_mem(fbi, &p.mem_info); 1130 break; 1131 case OMAPFB_QUERY_MEM: 1132 if ((r = omapfb_query_mem(fbi, &p.mem_info)) < 0) 1133 break; 1134 if (copy_to_user((void __user *)arg, &p.mem_info, 1135 sizeof(p.mem_info))) 1136 r = -EFAULT; 1137 break; 1138 case OMAPFB_SET_COLOR_KEY: 1139 if (copy_from_user(&p.color_key, (void __user *)arg, 1140 sizeof(p.color_key))) 1141 r = -EFAULT; 1142 else 1143 r = omapfb_set_color_key(fbdev, &p.color_key); 1144 break; 1145 case OMAPFB_GET_COLOR_KEY: 1146 if ((r = omapfb_get_color_key(fbdev, &p.color_key)) < 0) 1147 break; 1148 if (copy_to_user((void __user *)arg, &p.color_key, 1149 sizeof(p.color_key))) 1150 r = -EFAULT; 1151 break; 1152 case OMAPFB_GET_CAPS: 1153 omapfb_get_caps(fbdev, plane->idx, &p.caps); 1154 if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps))) 1155 r = -EFAULT; 1156 break; 1157 case OMAPFB_LCD_TEST: 1158 { 1159 int test_num; 1160 1161 if (get_user(test_num, (int __user *)arg)) { 1162 r = -EFAULT; 1163 break; 1164 } 1165 if (!fbdev->panel->run_test) { 1166 r = -EINVAL; 1167 break; 1168 } 1169 r = fbdev->panel->run_test(fbdev->panel, test_num); 1170 break; 1171 } 1172 case OMAPFB_CTRL_TEST: 1173 { 1174 int test_num; 1175 1176 if (get_user(test_num, (int __user *)arg)) { 1177 r = -EFAULT; 1178 break; 1179 } 1180 if (!fbdev->ctrl->run_test) { 1181 r = -EINVAL; 1182 break; 1183 } 1184 r = fbdev->ctrl->run_test(test_num); 1185 break; 1186 } 1187 default: 1188 r = -EINVAL; 1189 } 1190 1191 return r; 1192 } 1193 1194 static int omapfb_mmap(struct fb_info *info, struct vm_area_struct *vma) 1195 { 1196 struct omapfb_plane_struct *plane = info->par; 1197 struct omapfb_device *fbdev = plane->fbdev; 1198 int r; 1199 1200 omapfb_rqueue_lock(fbdev); 1201 r = fbdev->ctrl->mmap(info, vma); 1202 omapfb_rqueue_unlock(fbdev); 1203 1204 return r; 1205 } 1206 1207 /* 1208 * Callback table for the frame buffer framework. Some of these pointers 1209 * will be changed according to the current setting of fb_info->accel_flags. 1210 */ 1211 static struct fb_ops omapfb_ops = { 1212 .owner = THIS_MODULE, 1213 .fb_open = omapfb_open, 1214 .fb_release = omapfb_release, 1215 .fb_setcolreg = omapfb_setcolreg, 1216 .fb_setcmap = omapfb_setcmap, 1217 .fb_fillrect = cfb_fillrect, 1218 .fb_copyarea = cfb_copyarea, 1219 .fb_imageblit = cfb_imageblit, 1220 .fb_blank = omapfb_blank, 1221 .fb_ioctl = omapfb_ioctl, 1222 .fb_check_var = omapfb_check_var, 1223 .fb_set_par = omapfb_set_par, 1224 .fb_pan_display = omapfb_pan_display, 1225 }; 1226 1227 /* 1228 * --------------------------------------------------------------------------- 1229 * Sysfs interface 1230 * --------------------------------------------------------------------------- 1231 */ 1232 /* omapfbX sysfs entries */ 1233 static ssize_t omapfb_show_caps_num(struct device *dev, 1234 struct device_attribute *attr, char *buf) 1235 { 1236 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1237 int plane; 1238 size_t size; 1239 struct omapfb_caps caps; 1240 1241 plane = 0; 1242 size = 0; 1243 while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) { 1244 omapfb_get_caps(fbdev, plane, &caps); 1245 size += scnprintf(&buf[size], PAGE_SIZE - size, 1246 "plane#%d %#010x %#010x %#010x\n", 1247 plane, caps.ctrl, caps.plane_color, caps.wnd_color); 1248 plane++; 1249 } 1250 return size; 1251 } 1252 1253 static ssize_t omapfb_show_caps_text(struct device *dev, 1254 struct device_attribute *attr, char *buf) 1255 { 1256 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1257 int i; 1258 struct omapfb_caps caps; 1259 int plane; 1260 size_t size; 1261 1262 plane = 0; 1263 size = 0; 1264 while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) { 1265 omapfb_get_caps(fbdev, plane, &caps); 1266 size += scnprintf(&buf[size], PAGE_SIZE - size, 1267 "plane#%d:\n", plane); 1268 for (i = 0; i < ARRAY_SIZE(ctrl_caps) && 1269 size < PAGE_SIZE; i++) { 1270 if (ctrl_caps[i].flag & caps.ctrl) 1271 size += scnprintf(&buf[size], PAGE_SIZE - size, 1272 " %s\n", ctrl_caps[i].name); 1273 } 1274 size += scnprintf(&buf[size], PAGE_SIZE - size, 1275 " plane colors:\n"); 1276 for (i = 0; i < ARRAY_SIZE(color_caps) && 1277 size < PAGE_SIZE; i++) { 1278 if (color_caps[i].flag & caps.plane_color) 1279 size += scnprintf(&buf[size], PAGE_SIZE - size, 1280 " %s\n", color_caps[i].name); 1281 } 1282 size += scnprintf(&buf[size], PAGE_SIZE - size, 1283 " window colors:\n"); 1284 for (i = 0; i < ARRAY_SIZE(color_caps) && 1285 size < PAGE_SIZE; i++) { 1286 if (color_caps[i].flag & caps.wnd_color) 1287 size += scnprintf(&buf[size], PAGE_SIZE - 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 info->flags = FBINFO_FLAG_DEFAULT; 1449 1450 strscpy(fix->id, MODULE_NAME, sizeof(fix->id)); 1451 1452 info->pseudo_palette = fbdev->pseudo_palette; 1453 1454 var->accel_flags = def_accel ? FB_ACCELF_TEXT : 0; 1455 var->xres = def_vxres; 1456 var->yres = def_vyres; 1457 var->xres_virtual = def_vxres; 1458 var->yres_virtual = def_vyres; 1459 var->rotate = def_rotate; 1460 var->bits_per_pixel = fbdev->panel->bpp; 1461 1462 set_fb_var(info, var); 1463 set_fb_fix(info, 1); 1464 1465 r = fb_alloc_cmap(&info->cmap, 16, 0); 1466 if (r != 0) 1467 dev_err(fbdev->dev, "unable to allocate color map memory\n"); 1468 1469 return r; 1470 } 1471 1472 /* Release the fb_info object */ 1473 static void fbinfo_cleanup(struct omapfb_device *fbdev, struct fb_info *fbi) 1474 { 1475 fb_dealloc_cmap(&fbi->cmap); 1476 } 1477 1478 static void planes_cleanup(struct omapfb_device *fbdev) 1479 { 1480 int i; 1481 1482 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { 1483 if (fbdev->fb_info[i] == NULL) 1484 break; 1485 fbinfo_cleanup(fbdev, fbdev->fb_info[i]); 1486 framebuffer_release(fbdev->fb_info[i]); 1487 } 1488 } 1489 1490 static int planes_init(struct omapfb_device *fbdev) 1491 { 1492 struct fb_info *fbi; 1493 int i; 1494 int r; 1495 1496 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { 1497 struct omapfb_plane_struct *plane; 1498 fbi = framebuffer_alloc(sizeof(struct omapfb_plane_struct), 1499 fbdev->dev); 1500 if (fbi == NULL) { 1501 planes_cleanup(fbdev); 1502 return -ENOMEM; 1503 } 1504 plane = fbi->par; 1505 plane->idx = i; 1506 plane->fbdev = fbdev; 1507 plane->info.mirror = def_mirror; 1508 fbdev->fb_info[i] = fbi; 1509 1510 if ((r = fbinfo_init(fbdev, fbi)) < 0) { 1511 framebuffer_release(fbi); 1512 planes_cleanup(fbdev); 1513 return r; 1514 } 1515 plane->info.out_width = fbi->var.xres; 1516 plane->info.out_height = fbi->var.yres; 1517 } 1518 return 0; 1519 } 1520 1521 /* 1522 * Free driver resources. Can be called to rollback an aborted initialization 1523 * sequence. 1524 */ 1525 static void omapfb_free_resources(struct omapfb_device *fbdev, int state) 1526 { 1527 int i; 1528 1529 switch (state) { 1530 case OMAPFB_ACTIVE: 1531 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) 1532 unregister_framebuffer(fbdev->fb_info[i]); 1533 fallthrough; 1534 case 7: 1535 omapfb_unregister_sysfs(fbdev); 1536 fallthrough; 1537 case 6: 1538 if (fbdev->panel->disable) 1539 fbdev->panel->disable(fbdev->panel); 1540 fallthrough; 1541 case 5: 1542 omapfb_set_update_mode(fbdev, OMAPFB_UPDATE_DISABLED); 1543 fallthrough; 1544 case 4: 1545 planes_cleanup(fbdev); 1546 fallthrough; 1547 case 3: 1548 ctrl_cleanup(fbdev); 1549 fallthrough; 1550 case 2: 1551 if (fbdev->panel->cleanup) 1552 fbdev->panel->cleanup(fbdev->panel); 1553 fallthrough; 1554 case 1: 1555 dev_set_drvdata(fbdev->dev, NULL); 1556 kfree(fbdev); 1557 break; 1558 case 0: 1559 /* nothing to free */ 1560 break; 1561 default: 1562 BUG(); 1563 } 1564 } 1565 1566 static int omapfb_find_ctrl(struct omapfb_device *fbdev) 1567 { 1568 struct omapfb_platform_data *conf; 1569 char name[17]; 1570 int i; 1571 1572 conf = dev_get_platdata(fbdev->dev); 1573 1574 fbdev->ctrl = NULL; 1575 1576 strscpy(name, conf->lcd.ctrl_name, sizeof(name)); 1577 1578 if (strcmp(name, "internal") == 0) { 1579 fbdev->ctrl = fbdev->int_ctrl; 1580 return 0; 1581 } 1582 1583 for (i = 0; i < ARRAY_SIZE(ctrls); i++) { 1584 dev_dbg(fbdev->dev, "ctrl %s\n", ctrls[i]->name); 1585 if (strcmp(ctrls[i]->name, name) == 0) { 1586 fbdev->ctrl = ctrls[i]; 1587 break; 1588 } 1589 } 1590 1591 if (fbdev->ctrl == NULL) { 1592 dev_dbg(fbdev->dev, "ctrl %s not supported\n", name); 1593 return -1; 1594 } 1595 1596 return 0; 1597 } 1598 1599 /* 1600 * Called by LDM binding to probe and attach a new device. 1601 * Initialization sequence: 1602 * 1. allocate system omapfb_device structure 1603 * 2. select controller type according to platform configuration 1604 * init LCD panel 1605 * 3. init LCD controller and LCD DMA 1606 * 4. init system fb_info structure for all planes 1607 * 5. setup video mode for first plane and enable it 1608 * 6. enable LCD panel 1609 * 7. register sysfs attributes 1610 * OMAPFB_ACTIVE: register system fb_info structure for all planes 1611 */ 1612 static int omapfb_do_probe(struct platform_device *pdev, 1613 struct lcd_panel *panel) 1614 { 1615 struct omapfb_device *fbdev = NULL; 1616 int init_state; 1617 unsigned long phz, hhz, vhz; 1618 unsigned long vram; 1619 int i; 1620 int r = 0; 1621 1622 init_state = 0; 1623 1624 if (pdev->num_resources != 2) { 1625 dev_err(&pdev->dev, "probed for an unknown device\n"); 1626 r = -ENODEV; 1627 goto cleanup; 1628 } 1629 1630 if (dev_get_platdata(&pdev->dev) == NULL) { 1631 dev_err(&pdev->dev, "missing platform data\n"); 1632 r = -ENOENT; 1633 goto cleanup; 1634 } 1635 1636 fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL); 1637 if (fbdev == NULL) { 1638 dev_err(&pdev->dev, 1639 "unable to allocate memory for device info\n"); 1640 r = -ENOMEM; 1641 goto cleanup; 1642 } 1643 fbdev->int_irq = platform_get_irq(pdev, 0); 1644 if (fbdev->int_irq < 0) { 1645 r = ENXIO; 1646 goto cleanup; 1647 } 1648 1649 fbdev->ext_irq = platform_get_irq(pdev, 1); 1650 if (fbdev->ext_irq < 0) { 1651 r = ENXIO; 1652 goto cleanup; 1653 } 1654 1655 init_state++; 1656 1657 fbdev->dev = &pdev->dev; 1658 fbdev->panel = panel; 1659 fbdev->dssdev = &omapdss_device; 1660 platform_set_drvdata(pdev, fbdev); 1661 1662 mutex_init(&fbdev->rqueue_mutex); 1663 1664 fbdev->int_ctrl = &omap1_int_ctrl; 1665 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL 1666 fbdev->ext_if = &omap1_ext_if; 1667 #endif 1668 if (omapfb_find_ctrl(fbdev) < 0) { 1669 dev_err(fbdev->dev, 1670 "LCD controller not found, board not supported\n"); 1671 r = -ENODEV; 1672 goto cleanup; 1673 } 1674 1675 if (fbdev->panel->init) { 1676 r = fbdev->panel->init(fbdev->panel, fbdev); 1677 if (r) 1678 goto cleanup; 1679 } 1680 1681 pr_info("omapfb: configured for panel %s\n", fbdev->panel->name); 1682 1683 def_vxres = def_vxres ? def_vxres : fbdev->panel->x_res; 1684 def_vyres = def_vyres ? def_vyres : fbdev->panel->y_res; 1685 1686 init_state++; 1687 1688 r = ctrl_init(fbdev); 1689 if (r) 1690 goto cleanup; 1691 if (fbdev->ctrl->mmap != NULL) 1692 omapfb_ops.fb_mmap = omapfb_mmap; 1693 init_state++; 1694 1695 r = planes_init(fbdev); 1696 if (r) 1697 goto cleanup; 1698 init_state++; 1699 1700 #ifdef CONFIG_FB_OMAP_DMA_TUNE 1701 /* Set DMA priority for EMIFF access to highest */ 1702 omap_set_dma_priority(0, OMAP_DMA_PORT_EMIFF, 15); 1703 #endif 1704 1705 r = ctrl_change_mode(fbdev->fb_info[0]); 1706 if (r) { 1707 dev_err(fbdev->dev, "mode setting failed\n"); 1708 goto cleanup; 1709 } 1710 1711 /* GFX plane is enabled by default */ 1712 r = fbdev->ctrl->enable_plane(OMAPFB_PLANE_GFX, 1); 1713 if (r) 1714 goto cleanup; 1715 1716 omapfb_set_update_mode(fbdev, manual_update ? 1717 OMAPFB_MANUAL_UPDATE : OMAPFB_AUTO_UPDATE); 1718 init_state++; 1719 1720 if (fbdev->panel->enable) { 1721 r = fbdev->panel->enable(fbdev->panel); 1722 if (r) 1723 goto cleanup; 1724 } 1725 init_state++; 1726 1727 r = omapfb_register_sysfs(fbdev); 1728 if (r) 1729 goto cleanup; 1730 init_state++; 1731 1732 vram = 0; 1733 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { 1734 r = register_framebuffer(fbdev->fb_info[i]); 1735 if (r != 0) { 1736 dev_err(fbdev->dev, 1737 "registering framebuffer %d failed\n", i); 1738 goto cleanup; 1739 } 1740 vram += fbdev->mem_desc.region[i].size; 1741 } 1742 1743 fbdev->state = OMAPFB_ACTIVE; 1744 1745 panel = fbdev->panel; 1746 phz = panel->pixel_clock * 1000; 1747 hhz = phz * 10 / (panel->hfp + panel->x_res + panel->hbp + panel->hsw); 1748 vhz = hhz / (panel->vfp + panel->y_res + panel->vbp + panel->vsw); 1749 1750 omapfb_dev = fbdev; 1751 1752 pr_info("omapfb: Framebuffer initialized. Total vram %lu planes %d\n", 1753 vram, fbdev->mem_desc.region_cnt); 1754 pr_info("omapfb: Pixclock %lu kHz hfreq %lu.%lu kHz " 1755 "vfreq %lu.%lu Hz\n", 1756 phz / 1000, hhz / 10000, hhz % 10, vhz / 10, vhz % 10); 1757 1758 return 0; 1759 1760 cleanup: 1761 omapfb_free_resources(fbdev, init_state); 1762 1763 return r; 1764 } 1765 1766 static int omapfb_probe(struct platform_device *pdev) 1767 { 1768 int r; 1769 1770 BUG_ON(fbdev_pdev != NULL); 1771 1772 r = platform_device_register(&omapdss_device); 1773 if (r) { 1774 dev_err(&pdev->dev, "can't register omapdss device\n"); 1775 return r; 1776 } 1777 1778 /* Delay actual initialization until the LCD is registered */ 1779 fbdev_pdev = pdev; 1780 if (fbdev_panel != NULL) 1781 omapfb_do_probe(fbdev_pdev, fbdev_panel); 1782 return 0; 1783 } 1784 1785 void omapfb_register_panel(struct lcd_panel *panel) 1786 { 1787 BUG_ON(fbdev_panel != NULL); 1788 1789 fbdev_panel = panel; 1790 if (fbdev_pdev != NULL) 1791 omapfb_do_probe(fbdev_pdev, fbdev_panel); 1792 } 1793 EXPORT_SYMBOL_GPL(omapfb_register_panel); 1794 1795 /* Called when the device is being detached from the driver */ 1796 static int omapfb_remove(struct platform_device *pdev) 1797 { 1798 struct omapfb_device *fbdev = platform_get_drvdata(pdev); 1799 enum omapfb_state saved_state = fbdev->state; 1800 1801 /* FIXME: wait till completion of pending events */ 1802 1803 fbdev->state = OMAPFB_DISABLED; 1804 omapfb_free_resources(fbdev, saved_state); 1805 1806 platform_device_unregister(&omapdss_device); 1807 fbdev->dssdev = NULL; 1808 1809 return 0; 1810 } 1811 1812 /* PM suspend */ 1813 static int omapfb_suspend(struct platform_device *pdev, pm_message_t mesg) 1814 { 1815 struct omapfb_device *fbdev = platform_get_drvdata(pdev); 1816 1817 if (fbdev != NULL) 1818 omapfb_blank(FB_BLANK_POWERDOWN, fbdev->fb_info[0]); 1819 return 0; 1820 } 1821 1822 /* PM resume */ 1823 static int omapfb_resume(struct platform_device *pdev) 1824 { 1825 struct omapfb_device *fbdev = platform_get_drvdata(pdev); 1826 1827 if (fbdev != NULL) 1828 omapfb_blank(FB_BLANK_UNBLANK, fbdev->fb_info[0]); 1829 return 0; 1830 } 1831 1832 static struct platform_driver omapfb_driver = { 1833 .probe = omapfb_probe, 1834 .remove = omapfb_remove, 1835 .suspend = omapfb_suspend, 1836 .resume = omapfb_resume, 1837 .driver = { 1838 .name = MODULE_NAME, 1839 }, 1840 }; 1841 1842 #ifndef MODULE 1843 1844 /* Process kernel command line parameters */ 1845 static int __init omapfb_setup(char *options) 1846 { 1847 char *this_opt = NULL; 1848 int r = 0; 1849 1850 pr_debug("omapfb: options %s\n", options); 1851 1852 if (!options || !*options) 1853 return 0; 1854 1855 while (!r && (this_opt = strsep(&options, ",")) != NULL) { 1856 if (!strncmp(this_opt, "accel", 5)) 1857 def_accel = 1; 1858 else if (!strncmp(this_opt, "vram:", 5)) { 1859 char *suffix; 1860 unsigned long vram; 1861 vram = (simple_strtoul(this_opt + 5, &suffix, 0)); 1862 switch (suffix[0]) { 1863 case '\0': 1864 break; 1865 case 'm': 1866 case 'M': 1867 vram *= 1024; 1868 fallthrough; 1869 case 'k': 1870 case 'K': 1871 vram *= 1024; 1872 break; 1873 default: 1874 pr_debug("omapfb: invalid vram suffix %c\n", 1875 suffix[0]); 1876 r = -1; 1877 } 1878 def_vram[def_vram_cnt++] = vram; 1879 } 1880 else if (!strncmp(this_opt, "vxres:", 6)) 1881 def_vxres = simple_strtoul(this_opt + 6, NULL, 0); 1882 else if (!strncmp(this_opt, "vyres:", 6)) 1883 def_vyres = simple_strtoul(this_opt + 6, NULL, 0); 1884 else if (!strncmp(this_opt, "rotate:", 7)) 1885 def_rotate = (simple_strtoul(this_opt + 7, NULL, 0)); 1886 else if (!strncmp(this_opt, "mirror:", 7)) 1887 def_mirror = (simple_strtoul(this_opt + 7, NULL, 0)); 1888 else if (!strncmp(this_opt, "manual_update", 13)) 1889 manual_update = 1; 1890 else { 1891 pr_debug("omapfb: invalid option\n"); 1892 r = -1; 1893 } 1894 } 1895 1896 return r; 1897 } 1898 1899 #endif 1900 1901 /* Register both the driver and the device */ 1902 static int __init omapfb_init(void) 1903 { 1904 #ifndef MODULE 1905 char *option; 1906 1907 if (fb_get_options("omapfb", &option)) 1908 return -ENODEV; 1909 omapfb_setup(option); 1910 #endif 1911 /* Register the driver with LDM */ 1912 if (platform_driver_register(&omapfb_driver)) { 1913 pr_debug("failed to register omapfb driver\n"); 1914 return -ENODEV; 1915 } 1916 1917 return 0; 1918 } 1919 1920 static void __exit omapfb_cleanup(void) 1921 { 1922 platform_driver_unregister(&omapfb_driver); 1923 } 1924 1925 module_param_named(accel, def_accel, uint, 0664); 1926 module_param_array_named(vram, def_vram, ulong, &def_vram_cnt, 0664); 1927 module_param_named(vxres, def_vxres, long, 0664); 1928 module_param_named(vyres, def_vyres, long, 0664); 1929 module_param_named(rotate, def_rotate, uint, 0664); 1930 module_param_named(mirror, def_mirror, uint, 0664); 1931 module_param_named(manual_update, manual_update, bool, 0664); 1932 1933 module_init(omapfb_init); 1934 module_exit(omapfb_cleanup); 1935 1936 MODULE_DESCRIPTION("TI OMAP framebuffer driver"); 1937 MODULE_AUTHOR("Imre Deak <imre.deak@nokia.com>"); 1938 MODULE_LICENSE("GPL"); 1939