1 /* 2 * Framebuffer driver for TI OMAP boards 3 * 4 * Copyright (C) 2004 Nokia Corporation 5 * Author: Imre Deak <imre.deak@nokia.com> 6 * 7 * Acknowledgements: 8 * Alex McMains <aam@ridgerun.com> - Original driver 9 * Juha Yrjola <juha.yrjola@nokia.com> - Original driver and improvements 10 * Dirk Behme <dirk.behme@de.bosch.com> - changes for 2.6 kernel API 11 * Texas Instruments - H3 support 12 * 13 * This program is free software; you can redistribute it and/or modify it 14 * under the terms of the GNU General Public License as published by the 15 * Free Software Foundation; either version 2 of the License, or (at your 16 * option) any later version. 17 * 18 * This program is distributed in the hope that it will be useful, but 19 * WITHOUT ANY WARRANTY; without even the implied warranty of 20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 21 * General Public License for more details. 22 * 23 * You should have received a copy of the GNU General Public License along 24 * with this program; if not, write to the Free Software Foundation, Inc., 25 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 26 */ 27 #include <linux/platform_device.h> 28 #include <linux/mm.h> 29 #include <linux/slab.h> 30 #include <linux/uaccess.h> 31 #include <linux/module.h> 32 33 #include <linux/omap-dma.h> 34 35 #include <mach/hardware.h> 36 37 #include "omapfb.h" 38 #include "lcdc.h" 39 40 #define MODULE_NAME "omapfb" 41 42 static unsigned int def_accel; 43 static unsigned long def_vram[OMAPFB_PLANE_NUM]; 44 static unsigned int def_vram_cnt; 45 static unsigned long def_vxres; 46 static unsigned long def_vyres; 47 static unsigned int def_rotate; 48 static unsigned int def_mirror; 49 50 #ifdef CONFIG_FB_OMAP_MANUAL_UPDATE 51 static bool manual_update = 1; 52 #else 53 static bool manual_update; 54 #endif 55 56 static struct platform_device *fbdev_pdev; 57 static struct lcd_panel *fbdev_panel; 58 static struct omapfb_device *omapfb_dev; 59 60 struct caps_table_struct { 61 unsigned long flag; 62 const char *name; 63 }; 64 65 static struct caps_table_struct ctrl_caps[] = { 66 { OMAPFB_CAPS_MANUAL_UPDATE, "manual update" }, 67 { OMAPFB_CAPS_TEARSYNC, "tearing synchronization" }, 68 { OMAPFB_CAPS_PLANE_RELOCATE_MEM, "relocate plane memory" }, 69 { OMAPFB_CAPS_PLANE_SCALE, "scale plane" }, 70 { OMAPFB_CAPS_WINDOW_PIXEL_DOUBLE, "pixel double window" }, 71 { OMAPFB_CAPS_WINDOW_SCALE, "scale window" }, 72 { OMAPFB_CAPS_WINDOW_OVERLAY, "overlay window" }, 73 { OMAPFB_CAPS_WINDOW_ROTATE, "rotate window" }, 74 { OMAPFB_CAPS_SET_BACKLIGHT, "backlight setting" }, 75 }; 76 77 static struct caps_table_struct color_caps[] = { 78 { 1 << OMAPFB_COLOR_RGB565, "RGB565", }, 79 { 1 << OMAPFB_COLOR_YUV422, "YUV422", }, 80 { 1 << OMAPFB_COLOR_YUV420, "YUV420", }, 81 { 1 << OMAPFB_COLOR_CLUT_8BPP, "CLUT8", }, 82 { 1 << OMAPFB_COLOR_CLUT_4BPP, "CLUT4", }, 83 { 1 << OMAPFB_COLOR_CLUT_2BPP, "CLUT2", }, 84 { 1 << OMAPFB_COLOR_CLUT_1BPP, "CLUT1", }, 85 { 1 << OMAPFB_COLOR_RGB444, "RGB444", }, 86 { 1 << OMAPFB_COLOR_YUY422, "YUY422", }, 87 }; 88 89 static void omapdss_release(struct device *dev) 90 { 91 } 92 93 /* dummy device for clocks */ 94 static struct platform_device omapdss_device = { 95 .name = "omapdss_dss", 96 .id = -1, 97 .dev = { 98 .release = omapdss_release, 99 }, 100 }; 101 102 /* 103 * --------------------------------------------------------------------------- 104 * LCD panel 105 * --------------------------------------------------------------------------- 106 */ 107 extern struct lcd_ctrl hwa742_ctrl; 108 109 static const struct lcd_ctrl *ctrls[] = { 110 &omap1_int_ctrl, 111 112 #ifdef CONFIG_FB_OMAP_LCDC_HWA742 113 &hwa742_ctrl, 114 #endif 115 }; 116 117 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL 118 extern struct lcd_ctrl_extif omap1_ext_if; 119 #endif 120 121 static void omapfb_rqueue_lock(struct omapfb_device *fbdev) 122 { 123 mutex_lock(&fbdev->rqueue_mutex); 124 } 125 126 static void omapfb_rqueue_unlock(struct omapfb_device *fbdev) 127 { 128 mutex_unlock(&fbdev->rqueue_mutex); 129 } 130 131 /* 132 * --------------------------------------------------------------------------- 133 * LCD controller and LCD DMA 134 * --------------------------------------------------------------------------- 135 */ 136 /* 137 * Allocate resources needed for LCD controller and LCD DMA operations. Video 138 * memory is allocated from system memory according to the virtual display 139 * size, except if a bigger memory size is specified explicitly as a kernel 140 * parameter. 141 */ 142 static int ctrl_init(struct omapfb_device *fbdev) 143 { 144 int r; 145 int i; 146 147 /* kernel/module vram parameters override boot tags/board config */ 148 if (def_vram_cnt) { 149 for (i = 0; i < def_vram_cnt; i++) 150 fbdev->mem_desc.region[i].size = 151 PAGE_ALIGN(def_vram[i]); 152 fbdev->mem_desc.region_cnt = i; 153 } 154 155 if (!fbdev->mem_desc.region_cnt) { 156 struct lcd_panel *panel = fbdev->panel; 157 int def_size; 158 int bpp = panel->bpp; 159 160 /* 12 bpp is packed in 16 bits */ 161 if (bpp == 12) 162 bpp = 16; 163 def_size = def_vxres * def_vyres * bpp / 8; 164 fbdev->mem_desc.region_cnt = 1; 165 fbdev->mem_desc.region[0].size = PAGE_ALIGN(def_size); 166 } 167 r = fbdev->ctrl->init(fbdev, 0, &fbdev->mem_desc); 168 if (r < 0) { 169 dev_err(fbdev->dev, "controller initialization failed (%d)\n", 170 r); 171 return r; 172 } 173 174 #ifdef DEBUG 175 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { 176 dev_dbg(fbdev->dev, "region%d phys %08x virt %p size=%lu\n", 177 i, 178 fbdev->mem_desc.region[i].paddr, 179 fbdev->mem_desc.region[i].vaddr, 180 fbdev->mem_desc.region[i].size); 181 } 182 #endif 183 return 0; 184 } 185 186 static void ctrl_cleanup(struct omapfb_device *fbdev) 187 { 188 fbdev->ctrl->cleanup(); 189 } 190 191 /* Must be called with fbdev->rqueue_mutex held. */ 192 static int ctrl_change_mode(struct fb_info *fbi) 193 { 194 int r; 195 unsigned long offset; 196 struct omapfb_plane_struct *plane = fbi->par; 197 struct omapfb_device *fbdev = plane->fbdev; 198 struct fb_var_screeninfo *var = &fbi->var; 199 200 offset = var->yoffset * fbi->fix.line_length + 201 var->xoffset * var->bits_per_pixel / 8; 202 203 if (fbdev->ctrl->sync) 204 fbdev->ctrl->sync(); 205 r = fbdev->ctrl->setup_plane(plane->idx, plane->info.channel_out, 206 offset, var->xres_virtual, 207 plane->info.pos_x, plane->info.pos_y, 208 var->xres, var->yres, plane->color_mode); 209 if (r < 0) 210 return r; 211 212 if (fbdev->ctrl->set_rotate != NULL) { 213 r = fbdev->ctrl->set_rotate(var->rotate); 214 if (r < 0) 215 return r; 216 } 217 218 if (fbdev->ctrl->set_scale != NULL) 219 r = fbdev->ctrl->set_scale(plane->idx, 220 var->xres, var->yres, 221 plane->info.out_width, 222 plane->info.out_height); 223 224 return r; 225 } 226 227 /* 228 * --------------------------------------------------------------------------- 229 * fbdev framework callbacks and the ioctl interface 230 * --------------------------------------------------------------------------- 231 */ 232 /* Called each time the omapfb device is opened */ 233 static int omapfb_open(struct fb_info *info, int user) 234 { 235 return 0; 236 } 237 238 static void omapfb_sync(struct fb_info *info); 239 240 /* Called when the omapfb device is closed. We make sure that any pending 241 * gfx DMA operations are ended, before we return. */ 242 static int omapfb_release(struct fb_info *info, int user) 243 { 244 omapfb_sync(info); 245 return 0; 246 } 247 248 /* Store a single color palette entry into a pseudo palette or the hardware 249 * palette if one is available. For now we support only 16bpp and thus store 250 * the entry only to the pseudo palette. 251 */ 252 static int _setcolreg(struct fb_info *info, u_int regno, u_int red, u_int green, 253 u_int blue, u_int transp, int update_hw_pal) 254 { 255 struct omapfb_plane_struct *plane = info->par; 256 struct omapfb_device *fbdev = plane->fbdev; 257 struct fb_var_screeninfo *var = &info->var; 258 int r = 0; 259 260 switch (plane->color_mode) { 261 case OMAPFB_COLOR_YUV422: 262 case OMAPFB_COLOR_YUV420: 263 case OMAPFB_COLOR_YUY422: 264 r = -EINVAL; 265 break; 266 case OMAPFB_COLOR_CLUT_8BPP: 267 case OMAPFB_COLOR_CLUT_4BPP: 268 case OMAPFB_COLOR_CLUT_2BPP: 269 case OMAPFB_COLOR_CLUT_1BPP: 270 if (fbdev->ctrl->setcolreg) 271 r = fbdev->ctrl->setcolreg(regno, red, green, blue, 272 transp, update_hw_pal); 273 /* Fallthrough */ 274 case OMAPFB_COLOR_RGB565: 275 case OMAPFB_COLOR_RGB444: 276 if (r != 0) 277 break; 278 279 if (regno < 0) { 280 r = -EINVAL; 281 break; 282 } 283 284 if (regno < 16) { 285 u16 pal; 286 pal = ((red >> (16 - var->red.length)) << 287 var->red.offset) | 288 ((green >> (16 - var->green.length)) << 289 var->green.offset) | 290 (blue >> (16 - var->blue.length)); 291 ((u32 *)(info->pseudo_palette))[regno] = pal; 292 } 293 break; 294 default: 295 BUG(); 296 } 297 return r; 298 } 299 300 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, 301 u_int transp, struct fb_info *info) 302 { 303 return _setcolreg(info, regno, red, green, blue, transp, 1); 304 } 305 306 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info) 307 { 308 int count, index, r; 309 u16 *red, *green, *blue, *transp; 310 u16 trans = 0xffff; 311 312 red = cmap->red; 313 green = cmap->green; 314 blue = cmap->blue; 315 transp = cmap->transp; 316 index = cmap->start; 317 318 for (count = 0; count < cmap->len; count++) { 319 if (transp) 320 trans = *transp++; 321 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans, 322 count == cmap->len - 1); 323 if (r != 0) 324 return r; 325 } 326 327 return 0; 328 } 329 330 static int omapfb_update_full_screen(struct fb_info *fbi); 331 332 static int omapfb_blank(int blank, struct fb_info *fbi) 333 { 334 struct omapfb_plane_struct *plane = fbi->par; 335 struct omapfb_device *fbdev = plane->fbdev; 336 int do_update = 0; 337 int r = 0; 338 339 omapfb_rqueue_lock(fbdev); 340 switch (blank) { 341 case FB_BLANK_UNBLANK: 342 if (fbdev->state == OMAPFB_SUSPENDED) { 343 if (fbdev->ctrl->resume) 344 fbdev->ctrl->resume(); 345 fbdev->panel->enable(fbdev->panel); 346 fbdev->state = OMAPFB_ACTIVE; 347 if (fbdev->ctrl->get_update_mode() == 348 OMAPFB_MANUAL_UPDATE) 349 do_update = 1; 350 } 351 break; 352 case FB_BLANK_POWERDOWN: 353 if (fbdev->state == OMAPFB_ACTIVE) { 354 fbdev->panel->disable(fbdev->panel); 355 if (fbdev->ctrl->suspend) 356 fbdev->ctrl->suspend(); 357 fbdev->state = OMAPFB_SUSPENDED; 358 } 359 break; 360 default: 361 r = -EINVAL; 362 } 363 omapfb_rqueue_unlock(fbdev); 364 365 if (r == 0 && do_update) 366 r = omapfb_update_full_screen(fbi); 367 368 return r; 369 } 370 371 static void omapfb_sync(struct fb_info *fbi) 372 { 373 struct omapfb_plane_struct *plane = fbi->par; 374 struct omapfb_device *fbdev = plane->fbdev; 375 376 omapfb_rqueue_lock(fbdev); 377 if (fbdev->ctrl->sync) 378 fbdev->ctrl->sync(); 379 omapfb_rqueue_unlock(fbdev); 380 } 381 382 /* 383 * Set fb_info.fix fields and also updates fbdev. 384 * When calling this fb_info.var must be set up already. 385 */ 386 static void set_fb_fix(struct fb_info *fbi, int from_init) 387 { 388 struct fb_fix_screeninfo *fix = &fbi->fix; 389 struct fb_var_screeninfo *var = &fbi->var; 390 struct omapfb_plane_struct *plane = fbi->par; 391 struct omapfb_mem_region *rg; 392 int bpp; 393 394 rg = &plane->fbdev->mem_desc.region[plane->idx]; 395 fbi->screen_base = rg->vaddr; 396 397 if (!from_init) { 398 mutex_lock(&fbi->mm_lock); 399 fix->smem_start = rg->paddr; 400 fix->smem_len = rg->size; 401 mutex_unlock(&fbi->mm_lock); 402 } else { 403 fix->smem_start = rg->paddr; 404 fix->smem_len = rg->size; 405 } 406 407 fix->type = FB_TYPE_PACKED_PIXELS; 408 bpp = var->bits_per_pixel; 409 if (var->nonstd) 410 fix->visual = FB_VISUAL_PSEUDOCOLOR; 411 else switch (var->bits_per_pixel) { 412 case 16: 413 case 12: 414 fix->visual = FB_VISUAL_TRUECOLOR; 415 /* 12bpp is stored in 16 bits */ 416 bpp = 16; 417 break; 418 case 1: 419 case 2: 420 case 4: 421 case 8: 422 fix->visual = FB_VISUAL_PSEUDOCOLOR; 423 break; 424 } 425 fix->accel = FB_ACCEL_OMAP1610; 426 fix->line_length = var->xres_virtual * bpp / 8; 427 } 428 429 static int set_color_mode(struct omapfb_plane_struct *plane, 430 struct fb_var_screeninfo *var) 431 { 432 switch (var->nonstd) { 433 case 0: 434 break; 435 case OMAPFB_COLOR_YUV422: 436 var->bits_per_pixel = 16; 437 plane->color_mode = var->nonstd; 438 return 0; 439 case OMAPFB_COLOR_YUV420: 440 var->bits_per_pixel = 12; 441 plane->color_mode = var->nonstd; 442 return 0; 443 case OMAPFB_COLOR_YUY422: 444 var->bits_per_pixel = 16; 445 plane->color_mode = var->nonstd; 446 return 0; 447 default: 448 return -EINVAL; 449 } 450 451 switch (var->bits_per_pixel) { 452 case 1: 453 plane->color_mode = OMAPFB_COLOR_CLUT_1BPP; 454 return 0; 455 case 2: 456 plane->color_mode = OMAPFB_COLOR_CLUT_2BPP; 457 return 0; 458 case 4: 459 plane->color_mode = OMAPFB_COLOR_CLUT_4BPP; 460 return 0; 461 case 8: 462 plane->color_mode = OMAPFB_COLOR_CLUT_8BPP; 463 return 0; 464 case 12: 465 var->bits_per_pixel = 16; 466 case 16: 467 if (plane->fbdev->panel->bpp == 12) 468 plane->color_mode = OMAPFB_COLOR_RGB444; 469 else 470 plane->color_mode = OMAPFB_COLOR_RGB565; 471 return 0; 472 default: 473 return -EINVAL; 474 } 475 } 476 477 /* 478 * Check the values in var against our capabilities and in case of out of 479 * bound values try to adjust them. 480 */ 481 static int set_fb_var(struct fb_info *fbi, 482 struct fb_var_screeninfo *var) 483 { 484 int bpp; 485 unsigned long max_frame_size; 486 unsigned long line_size; 487 int xres_min, xres_max; 488 int yres_min, yres_max; 489 struct omapfb_plane_struct *plane = fbi->par; 490 struct omapfb_device *fbdev = plane->fbdev; 491 struct lcd_panel *panel = fbdev->panel; 492 493 if (set_color_mode(plane, var) < 0) 494 return -EINVAL; 495 496 bpp = var->bits_per_pixel; 497 if (plane->color_mode == OMAPFB_COLOR_RGB444) 498 bpp = 16; 499 500 switch (var->rotate) { 501 case 0: 502 case 180: 503 xres_min = OMAPFB_PLANE_XRES_MIN; 504 xres_max = panel->x_res; 505 yres_min = OMAPFB_PLANE_YRES_MIN; 506 yres_max = panel->y_res; 507 if (cpu_is_omap15xx()) { 508 var->xres = panel->x_res; 509 var->yres = panel->y_res; 510 } 511 break; 512 case 90: 513 case 270: 514 xres_min = OMAPFB_PLANE_YRES_MIN; 515 xres_max = panel->y_res; 516 yres_min = OMAPFB_PLANE_XRES_MIN; 517 yres_max = panel->x_res; 518 if (cpu_is_omap15xx()) { 519 var->xres = panel->y_res; 520 var->yres = panel->x_res; 521 } 522 break; 523 default: 524 return -EINVAL; 525 } 526 527 if (var->xres < xres_min) 528 var->xres = xres_min; 529 if (var->yres < yres_min) 530 var->yres = yres_min; 531 if (var->xres > xres_max) 532 var->xres = xres_max; 533 if (var->yres > yres_max) 534 var->yres = yres_max; 535 536 if (var->xres_virtual < var->xres) 537 var->xres_virtual = var->xres; 538 if (var->yres_virtual < var->yres) 539 var->yres_virtual = var->yres; 540 max_frame_size = fbdev->mem_desc.region[plane->idx].size; 541 line_size = var->xres_virtual * bpp / 8; 542 if (line_size * var->yres_virtual > max_frame_size) { 543 /* Try to keep yres_virtual first */ 544 line_size = max_frame_size / var->yres_virtual; 545 var->xres_virtual = line_size * 8 / bpp; 546 if (var->xres_virtual < var->xres) { 547 /* Still doesn't fit. Shrink yres_virtual too */ 548 var->xres_virtual = var->xres; 549 line_size = var->xres * bpp / 8; 550 var->yres_virtual = max_frame_size / line_size; 551 } 552 /* Recheck this, as the virtual size changed. */ 553 if (var->xres_virtual < var->xres) 554 var->xres = var->xres_virtual; 555 if (var->yres_virtual < var->yres) 556 var->yres = var->yres_virtual; 557 if (var->xres < xres_min || var->yres < yres_min) 558 return -EINVAL; 559 } 560 if (var->xres + var->xoffset > var->xres_virtual) 561 var->xoffset = var->xres_virtual - var->xres; 562 if (var->yres + var->yoffset > var->yres_virtual) 563 var->yoffset = var->yres_virtual - var->yres; 564 565 if (plane->color_mode == OMAPFB_COLOR_RGB444) { 566 var->red.offset = 8; var->red.length = 4; 567 var->red.msb_right = 0; 568 var->green.offset = 4; var->green.length = 4; 569 var->green.msb_right = 0; 570 var->blue.offset = 0; var->blue.length = 4; 571 var->blue.msb_right = 0; 572 } else { 573 var->red.offset = 11; var->red.length = 5; 574 var->red.msb_right = 0; 575 var->green.offset = 5; var->green.length = 6; 576 var->green.msb_right = 0; 577 var->blue.offset = 0; var->blue.length = 5; 578 var->blue.msb_right = 0; 579 } 580 581 var->height = -1; 582 var->width = -1; 583 var->grayscale = 0; 584 585 /* pixclock in ps, the rest in pixclock */ 586 var->pixclock = 10000000 / (panel->pixel_clock / 100); 587 var->left_margin = panel->hfp; 588 var->right_margin = panel->hbp; 589 var->upper_margin = panel->vfp; 590 var->lower_margin = panel->vbp; 591 var->hsync_len = panel->hsw; 592 var->vsync_len = panel->vsw; 593 594 /* TODO: get these from panel->config */ 595 var->vmode = FB_VMODE_NONINTERLACED; 596 var->sync = 0; 597 598 return 0; 599 } 600 601 602 /* Set rotation (0, 90, 180, 270 degree), and switch to the new mode. */ 603 static void omapfb_rotate(struct fb_info *fbi, int rotate) 604 { 605 struct omapfb_plane_struct *plane = fbi->par; 606 struct omapfb_device *fbdev = plane->fbdev; 607 608 omapfb_rqueue_lock(fbdev); 609 if (rotate != fbi->var.rotate) { 610 struct fb_var_screeninfo *new_var = &fbdev->new_var; 611 612 memcpy(new_var, &fbi->var, sizeof(*new_var)); 613 new_var->rotate = rotate; 614 if (set_fb_var(fbi, new_var) == 0 && 615 memcmp(new_var, &fbi->var, sizeof(*new_var))) { 616 memcpy(&fbi->var, new_var, sizeof(*new_var)); 617 ctrl_change_mode(fbi); 618 } 619 } 620 omapfb_rqueue_unlock(fbdev); 621 } 622 623 /* 624 * Set new x,y offsets in the virtual display for the visible area and switch 625 * to the new mode. 626 */ 627 static int omapfb_pan_display(struct fb_var_screeninfo *var, 628 struct fb_info *fbi) 629 { 630 struct omapfb_plane_struct *plane = fbi->par; 631 struct omapfb_device *fbdev = plane->fbdev; 632 int r = 0; 633 634 omapfb_rqueue_lock(fbdev); 635 if (var->xoffset != fbi->var.xoffset || 636 var->yoffset != fbi->var.yoffset) { 637 struct fb_var_screeninfo *new_var = &fbdev->new_var; 638 639 memcpy(new_var, &fbi->var, sizeof(*new_var)); 640 new_var->xoffset = var->xoffset; 641 new_var->yoffset = var->yoffset; 642 if (set_fb_var(fbi, new_var)) 643 r = -EINVAL; 644 else { 645 memcpy(&fbi->var, new_var, sizeof(*new_var)); 646 ctrl_change_mode(fbi); 647 } 648 } 649 omapfb_rqueue_unlock(fbdev); 650 651 return r; 652 } 653 654 /* Set mirror to vertical axis and switch to the new mode. */ 655 static int omapfb_mirror(struct fb_info *fbi, int mirror) 656 { 657 struct omapfb_plane_struct *plane = fbi->par; 658 struct omapfb_device *fbdev = plane->fbdev; 659 int r = 0; 660 661 omapfb_rqueue_lock(fbdev); 662 mirror = mirror ? 1 : 0; 663 if (cpu_is_omap15xx()) 664 r = -EINVAL; 665 else if (mirror != plane->info.mirror) { 666 plane->info.mirror = mirror; 667 r = ctrl_change_mode(fbi); 668 } 669 omapfb_rqueue_unlock(fbdev); 670 671 return r; 672 } 673 674 /* 675 * Check values in var, try to adjust them in case of out of bound values if 676 * possible, or return error. 677 */ 678 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi) 679 { 680 struct omapfb_plane_struct *plane = fbi->par; 681 struct omapfb_device *fbdev = plane->fbdev; 682 int r; 683 684 omapfb_rqueue_lock(fbdev); 685 if (fbdev->ctrl->sync != NULL) 686 fbdev->ctrl->sync(); 687 r = set_fb_var(fbi, var); 688 omapfb_rqueue_unlock(fbdev); 689 690 return r; 691 } 692 693 /* 694 * Switch to a new mode. The parameters for it has been check already by 695 * omapfb_check_var. 696 */ 697 static int omapfb_set_par(struct fb_info *fbi) 698 { 699 struct omapfb_plane_struct *plane = fbi->par; 700 struct omapfb_device *fbdev = plane->fbdev; 701 int r = 0; 702 703 omapfb_rqueue_lock(fbdev); 704 set_fb_fix(fbi, 0); 705 r = ctrl_change_mode(fbi); 706 omapfb_rqueue_unlock(fbdev); 707 708 return r; 709 } 710 711 int omapfb_update_window_async(struct fb_info *fbi, 712 struct omapfb_update_window *win, 713 void (*callback)(void *), 714 void *callback_data) 715 { 716 int xres, yres; 717 struct omapfb_plane_struct *plane = fbi->par; 718 struct omapfb_device *fbdev = plane->fbdev; 719 struct fb_var_screeninfo *var = &fbi->var; 720 721 switch (var->rotate) { 722 case 0: 723 case 180: 724 xres = fbdev->panel->x_res; 725 yres = fbdev->panel->y_res; 726 break; 727 case 90: 728 case 270: 729 xres = fbdev->panel->y_res; 730 yres = fbdev->panel->x_res; 731 break; 732 default: 733 return -EINVAL; 734 } 735 736 if (win->x >= xres || win->y >= yres || 737 win->out_x > xres || win->out_y > yres) 738 return -EINVAL; 739 740 if (!fbdev->ctrl->update_window || 741 fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE) 742 return -ENODEV; 743 744 if (win->x + win->width > xres) 745 win->width = xres - win->x; 746 if (win->y + win->height > yres) 747 win->height = yres - win->y; 748 if (win->out_x + win->out_width > xres) 749 win->out_width = xres - win->out_x; 750 if (win->out_y + win->out_height > yres) 751 win->out_height = yres - win->out_y; 752 if (!win->width || !win->height || !win->out_width || !win->out_height) 753 return 0; 754 755 return fbdev->ctrl->update_window(fbi, win, callback, callback_data); 756 } 757 EXPORT_SYMBOL(omapfb_update_window_async); 758 759 static int omapfb_update_win(struct fb_info *fbi, 760 struct omapfb_update_window *win) 761 { 762 struct omapfb_plane_struct *plane = fbi->par; 763 int ret; 764 765 omapfb_rqueue_lock(plane->fbdev); 766 ret = omapfb_update_window_async(fbi, win, NULL, NULL); 767 omapfb_rqueue_unlock(plane->fbdev); 768 769 return ret; 770 } 771 772 static int omapfb_update_full_screen(struct fb_info *fbi) 773 { 774 struct omapfb_plane_struct *plane = fbi->par; 775 struct omapfb_device *fbdev = plane->fbdev; 776 struct omapfb_update_window win; 777 int r; 778 779 if (!fbdev->ctrl->update_window || 780 fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE) 781 return -ENODEV; 782 783 win.x = 0; 784 win.y = 0; 785 win.width = fbi->var.xres; 786 win.height = fbi->var.yres; 787 win.out_x = 0; 788 win.out_y = 0; 789 win.out_width = fbi->var.xres; 790 win.out_height = fbi->var.yres; 791 win.format = 0; 792 793 omapfb_rqueue_lock(fbdev); 794 r = fbdev->ctrl->update_window(fbi, &win, NULL, NULL); 795 omapfb_rqueue_unlock(fbdev); 796 797 return r; 798 } 799 800 static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi) 801 { 802 struct omapfb_plane_struct *plane = fbi->par; 803 struct omapfb_device *fbdev = plane->fbdev; 804 struct lcd_panel *panel = fbdev->panel; 805 struct omapfb_plane_info old_info; 806 int r = 0; 807 808 if (pi->pos_x + pi->out_width > panel->x_res || 809 pi->pos_y + pi->out_height > panel->y_res) 810 return -EINVAL; 811 812 omapfb_rqueue_lock(fbdev); 813 if (pi->enabled && !fbdev->mem_desc.region[plane->idx].size) { 814 /* 815 * This plane's memory was freed, can't enable it 816 * until it's reallocated. 817 */ 818 r = -EINVAL; 819 goto out; 820 } 821 old_info = plane->info; 822 plane->info = *pi; 823 if (pi->enabled) { 824 r = ctrl_change_mode(fbi); 825 if (r < 0) { 826 plane->info = old_info; 827 goto out; 828 } 829 } 830 r = fbdev->ctrl->enable_plane(plane->idx, pi->enabled); 831 if (r < 0) { 832 plane->info = old_info; 833 goto out; 834 } 835 out: 836 omapfb_rqueue_unlock(fbdev); 837 return r; 838 } 839 840 static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi) 841 { 842 struct omapfb_plane_struct *plane = fbi->par; 843 844 *pi = plane->info; 845 return 0; 846 } 847 848 static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi) 849 { 850 struct omapfb_plane_struct *plane = fbi->par; 851 struct omapfb_device *fbdev = plane->fbdev; 852 struct omapfb_mem_region *rg = &fbdev->mem_desc.region[plane->idx]; 853 size_t size; 854 int r = 0; 855 856 if (fbdev->ctrl->setup_mem == NULL) 857 return -ENODEV; 858 if (mi->type != OMAPFB_MEMTYPE_SDRAM) 859 return -EINVAL; 860 861 size = PAGE_ALIGN(mi->size); 862 omapfb_rqueue_lock(fbdev); 863 if (plane->info.enabled) { 864 r = -EBUSY; 865 goto out; 866 } 867 if (rg->size != size || rg->type != mi->type) { 868 struct fb_var_screeninfo *new_var = &fbdev->new_var; 869 unsigned long old_size = rg->size; 870 u8 old_type = rg->type; 871 unsigned long paddr; 872 873 rg->size = size; 874 rg->type = mi->type; 875 /* 876 * size == 0 is a special case, for which we 877 * don't check / adjust the screen parameters. 878 * This isn't a problem since the plane can't 879 * be reenabled unless its size is > 0. 880 */ 881 if (old_size != size && size) { 882 if (size) { 883 memcpy(new_var, &fbi->var, sizeof(*new_var)); 884 r = set_fb_var(fbi, new_var); 885 if (r < 0) 886 goto out; 887 } 888 } 889 890 if (fbdev->ctrl->sync) 891 fbdev->ctrl->sync(); 892 r = fbdev->ctrl->setup_mem(plane->idx, size, mi->type, &paddr); 893 if (r < 0) { 894 /* Revert changes. */ 895 rg->size = old_size; 896 rg->type = old_type; 897 goto out; 898 } 899 rg->paddr = paddr; 900 901 if (old_size != size) { 902 if (size) { 903 memcpy(&fbi->var, new_var, sizeof(fbi->var)); 904 set_fb_fix(fbi, 0); 905 } else { 906 /* 907 * Set these explicitly to indicate that the 908 * plane memory is dealloce'd, the other 909 * screen parameters in var / fix are invalid. 910 */ 911 mutex_lock(&fbi->mm_lock); 912 fbi->fix.smem_start = 0; 913 fbi->fix.smem_len = 0; 914 mutex_unlock(&fbi->mm_lock); 915 } 916 } 917 } 918 out: 919 omapfb_rqueue_unlock(fbdev); 920 921 return r; 922 } 923 924 static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi) 925 { 926 struct omapfb_plane_struct *plane = fbi->par; 927 struct omapfb_device *fbdev = plane->fbdev; 928 struct omapfb_mem_region *rg; 929 930 rg = &fbdev->mem_desc.region[plane->idx]; 931 memset(mi, 0, sizeof(*mi)); 932 mi->size = rg->size; 933 mi->type = rg->type; 934 935 return 0; 936 } 937 938 static int omapfb_set_color_key(struct omapfb_device *fbdev, 939 struct omapfb_color_key *ck) 940 { 941 int r; 942 943 if (!fbdev->ctrl->set_color_key) 944 return -ENODEV; 945 946 omapfb_rqueue_lock(fbdev); 947 r = fbdev->ctrl->set_color_key(ck); 948 omapfb_rqueue_unlock(fbdev); 949 950 return r; 951 } 952 953 static int omapfb_get_color_key(struct omapfb_device *fbdev, 954 struct omapfb_color_key *ck) 955 { 956 int r; 957 958 if (!fbdev->ctrl->get_color_key) 959 return -ENODEV; 960 961 omapfb_rqueue_lock(fbdev); 962 r = fbdev->ctrl->get_color_key(ck); 963 omapfb_rqueue_unlock(fbdev); 964 965 return r; 966 } 967 968 static struct blocking_notifier_head omapfb_client_list[OMAPFB_PLANE_NUM]; 969 static int notifier_inited; 970 971 static void omapfb_init_notifier(void) 972 { 973 int i; 974 975 for (i = 0; i < OMAPFB_PLANE_NUM; i++) 976 BLOCKING_INIT_NOTIFIER_HEAD(&omapfb_client_list[i]); 977 } 978 979 int omapfb_register_client(struct omapfb_notifier_block *omapfb_nb, 980 omapfb_notifier_callback_t callback, 981 void *callback_data) 982 { 983 int r; 984 985 if ((unsigned)omapfb_nb->plane_idx > OMAPFB_PLANE_NUM) 986 return -EINVAL; 987 988 if (!notifier_inited) { 989 omapfb_init_notifier(); 990 notifier_inited = 1; 991 } 992 993 omapfb_nb->nb.notifier_call = (int (*)(struct notifier_block *, 994 unsigned long, void *))callback; 995 omapfb_nb->data = callback_data; 996 r = blocking_notifier_chain_register( 997 &omapfb_client_list[omapfb_nb->plane_idx], 998 &omapfb_nb->nb); 999 if (r) 1000 return r; 1001 if (omapfb_dev != NULL && 1002 omapfb_dev->ctrl && omapfb_dev->ctrl->bind_client) { 1003 omapfb_dev->ctrl->bind_client(omapfb_nb); 1004 } 1005 1006 return 0; 1007 } 1008 EXPORT_SYMBOL(omapfb_register_client); 1009 1010 int omapfb_unregister_client(struct omapfb_notifier_block *omapfb_nb) 1011 { 1012 return blocking_notifier_chain_unregister( 1013 &omapfb_client_list[omapfb_nb->plane_idx], &omapfb_nb->nb); 1014 } 1015 EXPORT_SYMBOL(omapfb_unregister_client); 1016 1017 void omapfb_notify_clients(struct omapfb_device *fbdev, unsigned long event) 1018 { 1019 int i; 1020 1021 if (!notifier_inited) 1022 /* no client registered yet */ 1023 return; 1024 1025 for (i = 0; i < OMAPFB_PLANE_NUM; i++) 1026 blocking_notifier_call_chain(&omapfb_client_list[i], event, 1027 fbdev->fb_info[i]); 1028 } 1029 EXPORT_SYMBOL(omapfb_notify_clients); 1030 1031 static int omapfb_set_update_mode(struct omapfb_device *fbdev, 1032 enum omapfb_update_mode mode) 1033 { 1034 int r; 1035 1036 omapfb_rqueue_lock(fbdev); 1037 r = fbdev->ctrl->set_update_mode(mode); 1038 omapfb_rqueue_unlock(fbdev); 1039 1040 return r; 1041 } 1042 1043 static enum omapfb_update_mode omapfb_get_update_mode(struct omapfb_device *fbdev) 1044 { 1045 int r; 1046 1047 omapfb_rqueue_lock(fbdev); 1048 r = fbdev->ctrl->get_update_mode(); 1049 omapfb_rqueue_unlock(fbdev); 1050 1051 return r; 1052 } 1053 1054 static void omapfb_get_caps(struct omapfb_device *fbdev, int plane, 1055 struct omapfb_caps *caps) 1056 { 1057 memset(caps, 0, sizeof(*caps)); 1058 fbdev->ctrl->get_caps(plane, caps); 1059 caps->ctrl |= fbdev->panel->get_caps(fbdev->panel); 1060 } 1061 1062 /* For lcd testing */ 1063 void omapfb_write_first_pixel(struct omapfb_device *fbdev, u16 pixval) 1064 { 1065 omapfb_rqueue_lock(fbdev); 1066 *(u16 *)fbdev->mem_desc.region[0].vaddr = pixval; 1067 if (fbdev->ctrl->get_update_mode() == OMAPFB_MANUAL_UPDATE) { 1068 struct omapfb_update_window win; 1069 1070 memset(&win, 0, sizeof(win)); 1071 win.width = 2; 1072 win.height = 2; 1073 win.out_width = 2; 1074 win.out_height = 2; 1075 fbdev->ctrl->update_window(fbdev->fb_info[0], &win, NULL, NULL); 1076 } 1077 omapfb_rqueue_unlock(fbdev); 1078 } 1079 EXPORT_SYMBOL(omapfb_write_first_pixel); 1080 1081 /* 1082 * Ioctl interface. Part of the kernel mode frame buffer API is duplicated 1083 * here to be accessible by user mode code. 1084 */ 1085 static int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, 1086 unsigned long arg) 1087 { 1088 struct omapfb_plane_struct *plane = fbi->par; 1089 struct omapfb_device *fbdev = plane->fbdev; 1090 struct fb_ops *ops = fbi->fbops; 1091 union { 1092 struct omapfb_update_window update_window; 1093 struct omapfb_plane_info plane_info; 1094 struct omapfb_mem_info mem_info; 1095 struct omapfb_color_key color_key; 1096 enum omapfb_update_mode update_mode; 1097 struct omapfb_caps caps; 1098 unsigned int mirror; 1099 int plane_out; 1100 int enable_plane; 1101 } p; 1102 int r = 0; 1103 1104 BUG_ON(!ops); 1105 switch (cmd) { 1106 case OMAPFB_MIRROR: 1107 if (get_user(p.mirror, (int __user *)arg)) 1108 r = -EFAULT; 1109 else 1110 omapfb_mirror(fbi, p.mirror); 1111 break; 1112 case OMAPFB_SYNC_GFX: 1113 omapfb_sync(fbi); 1114 break; 1115 case OMAPFB_VSYNC: 1116 break; 1117 case OMAPFB_SET_UPDATE_MODE: 1118 if (get_user(p.update_mode, (int __user *)arg)) 1119 r = -EFAULT; 1120 else 1121 r = omapfb_set_update_mode(fbdev, p.update_mode); 1122 break; 1123 case OMAPFB_GET_UPDATE_MODE: 1124 p.update_mode = omapfb_get_update_mode(fbdev); 1125 if (put_user(p.update_mode, 1126 (enum omapfb_update_mode __user *)arg)) 1127 r = -EFAULT; 1128 break; 1129 case OMAPFB_UPDATE_WINDOW_OLD: 1130 if (copy_from_user(&p.update_window, (void __user *)arg, 1131 sizeof(struct omapfb_update_window_old))) 1132 r = -EFAULT; 1133 else { 1134 struct omapfb_update_window *u = &p.update_window; 1135 u->out_x = u->x; 1136 u->out_y = u->y; 1137 u->out_width = u->width; 1138 u->out_height = u->height; 1139 memset(u->reserved, 0, sizeof(u->reserved)); 1140 r = omapfb_update_win(fbi, u); 1141 } 1142 break; 1143 case OMAPFB_UPDATE_WINDOW: 1144 if (copy_from_user(&p.update_window, (void __user *)arg, 1145 sizeof(p.update_window))) 1146 r = -EFAULT; 1147 else 1148 r = omapfb_update_win(fbi, &p.update_window); 1149 break; 1150 case OMAPFB_SETUP_PLANE: 1151 if (copy_from_user(&p.plane_info, (void __user *)arg, 1152 sizeof(p.plane_info))) 1153 r = -EFAULT; 1154 else 1155 r = omapfb_setup_plane(fbi, &p.plane_info); 1156 break; 1157 case OMAPFB_QUERY_PLANE: 1158 if ((r = omapfb_query_plane(fbi, &p.plane_info)) < 0) 1159 break; 1160 if (copy_to_user((void __user *)arg, &p.plane_info, 1161 sizeof(p.plane_info))) 1162 r = -EFAULT; 1163 break; 1164 case OMAPFB_SETUP_MEM: 1165 if (copy_from_user(&p.mem_info, (void __user *)arg, 1166 sizeof(p.mem_info))) 1167 r = -EFAULT; 1168 else 1169 r = omapfb_setup_mem(fbi, &p.mem_info); 1170 break; 1171 case OMAPFB_QUERY_MEM: 1172 if ((r = omapfb_query_mem(fbi, &p.mem_info)) < 0) 1173 break; 1174 if (copy_to_user((void __user *)arg, &p.mem_info, 1175 sizeof(p.mem_info))) 1176 r = -EFAULT; 1177 break; 1178 case OMAPFB_SET_COLOR_KEY: 1179 if (copy_from_user(&p.color_key, (void __user *)arg, 1180 sizeof(p.color_key))) 1181 r = -EFAULT; 1182 else 1183 r = omapfb_set_color_key(fbdev, &p.color_key); 1184 break; 1185 case OMAPFB_GET_COLOR_KEY: 1186 if ((r = omapfb_get_color_key(fbdev, &p.color_key)) < 0) 1187 break; 1188 if (copy_to_user((void __user *)arg, &p.color_key, 1189 sizeof(p.color_key))) 1190 r = -EFAULT; 1191 break; 1192 case OMAPFB_GET_CAPS: 1193 omapfb_get_caps(fbdev, plane->idx, &p.caps); 1194 if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps))) 1195 r = -EFAULT; 1196 break; 1197 case OMAPFB_LCD_TEST: 1198 { 1199 int test_num; 1200 1201 if (get_user(test_num, (int __user *)arg)) { 1202 r = -EFAULT; 1203 break; 1204 } 1205 if (!fbdev->panel->run_test) { 1206 r = -EINVAL; 1207 break; 1208 } 1209 r = fbdev->panel->run_test(fbdev->panel, test_num); 1210 break; 1211 } 1212 case OMAPFB_CTRL_TEST: 1213 { 1214 int test_num; 1215 1216 if (get_user(test_num, (int __user *)arg)) { 1217 r = -EFAULT; 1218 break; 1219 } 1220 if (!fbdev->ctrl->run_test) { 1221 r = -EINVAL; 1222 break; 1223 } 1224 r = fbdev->ctrl->run_test(test_num); 1225 break; 1226 } 1227 default: 1228 r = -EINVAL; 1229 } 1230 1231 return r; 1232 } 1233 1234 static int omapfb_mmap(struct fb_info *info, struct vm_area_struct *vma) 1235 { 1236 struct omapfb_plane_struct *plane = info->par; 1237 struct omapfb_device *fbdev = plane->fbdev; 1238 int r; 1239 1240 omapfb_rqueue_lock(fbdev); 1241 r = fbdev->ctrl->mmap(info, vma); 1242 omapfb_rqueue_unlock(fbdev); 1243 1244 return r; 1245 } 1246 1247 /* 1248 * Callback table for the frame buffer framework. Some of these pointers 1249 * will be changed according to the current setting of fb_info->accel_flags. 1250 */ 1251 static struct fb_ops omapfb_ops = { 1252 .owner = THIS_MODULE, 1253 .fb_open = omapfb_open, 1254 .fb_release = omapfb_release, 1255 .fb_setcolreg = omapfb_setcolreg, 1256 .fb_setcmap = omapfb_setcmap, 1257 .fb_fillrect = cfb_fillrect, 1258 .fb_copyarea = cfb_copyarea, 1259 .fb_imageblit = cfb_imageblit, 1260 .fb_blank = omapfb_blank, 1261 .fb_ioctl = omapfb_ioctl, 1262 .fb_check_var = omapfb_check_var, 1263 .fb_set_par = omapfb_set_par, 1264 .fb_rotate = omapfb_rotate, 1265 .fb_pan_display = omapfb_pan_display, 1266 }; 1267 1268 /* 1269 * --------------------------------------------------------------------------- 1270 * Sysfs interface 1271 * --------------------------------------------------------------------------- 1272 */ 1273 /* omapfbX sysfs entries */ 1274 static ssize_t omapfb_show_caps_num(struct device *dev, 1275 struct device_attribute *attr, char *buf) 1276 { 1277 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1278 int plane; 1279 size_t size; 1280 struct omapfb_caps caps; 1281 1282 plane = 0; 1283 size = 0; 1284 while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) { 1285 omapfb_get_caps(fbdev, plane, &caps); 1286 size += snprintf(&buf[size], PAGE_SIZE - size, 1287 "plane#%d %#010x %#010x %#010x\n", 1288 plane, caps.ctrl, caps.plane_color, caps.wnd_color); 1289 plane++; 1290 } 1291 return size; 1292 } 1293 1294 static ssize_t omapfb_show_caps_text(struct device *dev, 1295 struct device_attribute *attr, char *buf) 1296 { 1297 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1298 int i; 1299 struct omapfb_caps caps; 1300 int plane; 1301 size_t size; 1302 1303 plane = 0; 1304 size = 0; 1305 while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) { 1306 omapfb_get_caps(fbdev, plane, &caps); 1307 size += snprintf(&buf[size], PAGE_SIZE - size, 1308 "plane#%d:\n", plane); 1309 for (i = 0; i < ARRAY_SIZE(ctrl_caps) && 1310 size < PAGE_SIZE; i++) { 1311 if (ctrl_caps[i].flag & caps.ctrl) 1312 size += snprintf(&buf[size], PAGE_SIZE - size, 1313 " %s\n", ctrl_caps[i].name); 1314 } 1315 size += snprintf(&buf[size], PAGE_SIZE - size, 1316 " plane colors:\n"); 1317 for (i = 0; i < ARRAY_SIZE(color_caps) && 1318 size < PAGE_SIZE; i++) { 1319 if (color_caps[i].flag & caps.plane_color) 1320 size += snprintf(&buf[size], PAGE_SIZE - size, 1321 " %s\n", color_caps[i].name); 1322 } 1323 size += snprintf(&buf[size], PAGE_SIZE - size, 1324 " window colors:\n"); 1325 for (i = 0; i < ARRAY_SIZE(color_caps) && 1326 size < PAGE_SIZE; i++) { 1327 if (color_caps[i].flag & caps.wnd_color) 1328 size += snprintf(&buf[size], PAGE_SIZE - size, 1329 " %s\n", color_caps[i].name); 1330 } 1331 1332 plane++; 1333 } 1334 return size; 1335 } 1336 1337 static DEVICE_ATTR(caps_num, 0444, omapfb_show_caps_num, NULL); 1338 static DEVICE_ATTR(caps_text, 0444, omapfb_show_caps_text, NULL); 1339 1340 /* panel sysfs entries */ 1341 static ssize_t omapfb_show_panel_name(struct device *dev, 1342 struct device_attribute *attr, char *buf) 1343 { 1344 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1345 1346 return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->panel->name); 1347 } 1348 1349 static ssize_t omapfb_show_bklight_level(struct device *dev, 1350 struct device_attribute *attr, 1351 char *buf) 1352 { 1353 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1354 int r; 1355 1356 if (fbdev->panel->get_bklight_level) { 1357 r = snprintf(buf, PAGE_SIZE, "%d\n", 1358 fbdev->panel->get_bklight_level(fbdev->panel)); 1359 } else 1360 r = -ENODEV; 1361 return r; 1362 } 1363 1364 static ssize_t omapfb_store_bklight_level(struct device *dev, 1365 struct device_attribute *attr, 1366 const char *buf, size_t size) 1367 { 1368 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1369 int r; 1370 1371 if (fbdev->panel->set_bklight_level) { 1372 unsigned int level; 1373 1374 if (sscanf(buf, "%10d", &level) == 1) { 1375 r = fbdev->panel->set_bklight_level(fbdev->panel, 1376 level); 1377 } else 1378 r = -EINVAL; 1379 } else 1380 r = -ENODEV; 1381 return r ? r : size; 1382 } 1383 1384 static ssize_t omapfb_show_bklight_max(struct device *dev, 1385 struct device_attribute *attr, char *buf) 1386 { 1387 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1388 int r; 1389 1390 if (fbdev->panel->get_bklight_level) { 1391 r = snprintf(buf, PAGE_SIZE, "%d\n", 1392 fbdev->panel->get_bklight_max(fbdev->panel)); 1393 } else 1394 r = -ENODEV; 1395 return r; 1396 } 1397 1398 static struct device_attribute dev_attr_panel_name = 1399 __ATTR(name, 0444, omapfb_show_panel_name, NULL); 1400 static DEVICE_ATTR(backlight_level, 0664, 1401 omapfb_show_bklight_level, omapfb_store_bklight_level); 1402 static DEVICE_ATTR(backlight_max, 0444, omapfb_show_bklight_max, NULL); 1403 1404 static struct attribute *panel_attrs[] = { 1405 &dev_attr_panel_name.attr, 1406 &dev_attr_backlight_level.attr, 1407 &dev_attr_backlight_max.attr, 1408 NULL, 1409 }; 1410 1411 static struct attribute_group panel_attr_grp = { 1412 .name = "panel", 1413 .attrs = panel_attrs, 1414 }; 1415 1416 /* ctrl sysfs entries */ 1417 static ssize_t omapfb_show_ctrl_name(struct device *dev, 1418 struct device_attribute *attr, char *buf) 1419 { 1420 struct omapfb_device *fbdev = dev_get_drvdata(dev); 1421 1422 return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->ctrl->name); 1423 } 1424 1425 static struct device_attribute dev_attr_ctrl_name = 1426 __ATTR(name, 0444, omapfb_show_ctrl_name, NULL); 1427 1428 static struct attribute *ctrl_attrs[] = { 1429 &dev_attr_ctrl_name.attr, 1430 NULL, 1431 }; 1432 1433 static struct attribute_group ctrl_attr_grp = { 1434 .name = "ctrl", 1435 .attrs = ctrl_attrs, 1436 }; 1437 1438 static int omapfb_register_sysfs(struct omapfb_device *fbdev) 1439 { 1440 int r; 1441 1442 if ((r = device_create_file(fbdev->dev, &dev_attr_caps_num))) 1443 goto fail0; 1444 1445 if ((r = device_create_file(fbdev->dev, &dev_attr_caps_text))) 1446 goto fail1; 1447 1448 if ((r = sysfs_create_group(&fbdev->dev->kobj, &panel_attr_grp))) 1449 goto fail2; 1450 1451 if ((r = sysfs_create_group(&fbdev->dev->kobj, &ctrl_attr_grp))) 1452 goto fail3; 1453 1454 return 0; 1455 fail3: 1456 sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp); 1457 fail2: 1458 device_remove_file(fbdev->dev, &dev_attr_caps_text); 1459 fail1: 1460 device_remove_file(fbdev->dev, &dev_attr_caps_num); 1461 fail0: 1462 dev_err(fbdev->dev, "unable to register sysfs interface\n"); 1463 return r; 1464 } 1465 1466 static void omapfb_unregister_sysfs(struct omapfb_device *fbdev) 1467 { 1468 sysfs_remove_group(&fbdev->dev->kobj, &ctrl_attr_grp); 1469 sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp); 1470 device_remove_file(fbdev->dev, &dev_attr_caps_num); 1471 device_remove_file(fbdev->dev, &dev_attr_caps_text); 1472 } 1473 1474 /* 1475 * --------------------------------------------------------------------------- 1476 * LDM callbacks 1477 * --------------------------------------------------------------------------- 1478 */ 1479 /* Initialize system fb_info object and set the default video mode. 1480 * The frame buffer memory already allocated by lcddma_init 1481 */ 1482 static int fbinfo_init(struct omapfb_device *fbdev, struct fb_info *info) 1483 { 1484 struct fb_var_screeninfo *var = &info->var; 1485 struct fb_fix_screeninfo *fix = &info->fix; 1486 int r = 0; 1487 1488 info->fbops = &omapfb_ops; 1489 info->flags = FBINFO_FLAG_DEFAULT; 1490 1491 strncpy(fix->id, MODULE_NAME, sizeof(fix->id)); 1492 1493 info->pseudo_palette = fbdev->pseudo_palette; 1494 1495 var->accel_flags = def_accel ? FB_ACCELF_TEXT : 0; 1496 var->xres = def_vxres; 1497 var->yres = def_vyres; 1498 var->xres_virtual = def_vxres; 1499 var->yres_virtual = def_vyres; 1500 var->rotate = def_rotate; 1501 var->bits_per_pixel = fbdev->panel->bpp; 1502 1503 set_fb_var(info, var); 1504 set_fb_fix(info, 1); 1505 1506 r = fb_alloc_cmap(&info->cmap, 16, 0); 1507 if (r != 0) 1508 dev_err(fbdev->dev, "unable to allocate color map memory\n"); 1509 1510 return r; 1511 } 1512 1513 /* Release the fb_info object */ 1514 static void fbinfo_cleanup(struct omapfb_device *fbdev, struct fb_info *fbi) 1515 { 1516 fb_dealloc_cmap(&fbi->cmap); 1517 } 1518 1519 static void planes_cleanup(struct omapfb_device *fbdev) 1520 { 1521 int i; 1522 1523 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { 1524 if (fbdev->fb_info[i] == NULL) 1525 break; 1526 fbinfo_cleanup(fbdev, fbdev->fb_info[i]); 1527 framebuffer_release(fbdev->fb_info[i]); 1528 } 1529 } 1530 1531 static int planes_init(struct omapfb_device *fbdev) 1532 { 1533 struct fb_info *fbi; 1534 int i; 1535 int r; 1536 1537 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { 1538 struct omapfb_plane_struct *plane; 1539 fbi = framebuffer_alloc(sizeof(struct omapfb_plane_struct), 1540 fbdev->dev); 1541 if (fbi == NULL) { 1542 dev_err(fbdev->dev, 1543 "unable to allocate memory for plane info\n"); 1544 planes_cleanup(fbdev); 1545 return -ENOMEM; 1546 } 1547 plane = fbi->par; 1548 plane->idx = i; 1549 plane->fbdev = fbdev; 1550 plane->info.mirror = def_mirror; 1551 fbdev->fb_info[i] = fbi; 1552 1553 if ((r = fbinfo_init(fbdev, fbi)) < 0) { 1554 framebuffer_release(fbi); 1555 planes_cleanup(fbdev); 1556 return r; 1557 } 1558 plane->info.out_width = fbi->var.xres; 1559 plane->info.out_height = fbi->var.yres; 1560 } 1561 return 0; 1562 } 1563 1564 /* 1565 * Free driver resources. Can be called to rollback an aborted initialization 1566 * sequence. 1567 */ 1568 static void omapfb_free_resources(struct omapfb_device *fbdev, int state) 1569 { 1570 int i; 1571 1572 switch (state) { 1573 case OMAPFB_ACTIVE: 1574 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) 1575 unregister_framebuffer(fbdev->fb_info[i]); 1576 case 7: 1577 omapfb_unregister_sysfs(fbdev); 1578 case 6: 1579 fbdev->panel->disable(fbdev->panel); 1580 case 5: 1581 omapfb_set_update_mode(fbdev, OMAPFB_UPDATE_DISABLED); 1582 case 4: 1583 planes_cleanup(fbdev); 1584 case 3: 1585 ctrl_cleanup(fbdev); 1586 case 2: 1587 fbdev->panel->cleanup(fbdev->panel); 1588 case 1: 1589 dev_set_drvdata(fbdev->dev, NULL); 1590 kfree(fbdev); 1591 case 0: 1592 /* nothing to free */ 1593 break; 1594 default: 1595 BUG(); 1596 } 1597 } 1598 1599 static int omapfb_find_ctrl(struct omapfb_device *fbdev) 1600 { 1601 struct omapfb_platform_data *conf; 1602 char name[17]; 1603 int i; 1604 1605 conf = dev_get_platdata(fbdev->dev); 1606 1607 fbdev->ctrl = NULL; 1608 1609 strncpy(name, conf->lcd.ctrl_name, sizeof(name) - 1); 1610 name[sizeof(name) - 1] = '\0'; 1611 1612 if (strcmp(name, "internal") == 0) { 1613 fbdev->ctrl = fbdev->int_ctrl; 1614 return 0; 1615 } 1616 1617 for (i = 0; i < ARRAY_SIZE(ctrls); i++) { 1618 dev_dbg(fbdev->dev, "ctrl %s\n", ctrls[i]->name); 1619 if (strcmp(ctrls[i]->name, name) == 0) { 1620 fbdev->ctrl = ctrls[i]; 1621 break; 1622 } 1623 } 1624 1625 if (fbdev->ctrl == NULL) { 1626 dev_dbg(fbdev->dev, "ctrl %s not supported\n", name); 1627 return -1; 1628 } 1629 1630 return 0; 1631 } 1632 1633 static void check_required_callbacks(struct omapfb_device *fbdev) 1634 { 1635 #define _C(x) (fbdev->ctrl->x != NULL) 1636 #define _P(x) (fbdev->panel->x != NULL) 1637 BUG_ON(fbdev->ctrl == NULL || fbdev->panel == NULL); 1638 BUG_ON(!(_C(init) && _C(cleanup) && _C(get_caps) && 1639 _C(set_update_mode) && _C(setup_plane) && _C(enable_plane) && 1640 _P(init) && _P(cleanup) && _P(enable) && _P(disable) && 1641 _P(get_caps))); 1642 #undef _P 1643 #undef _C 1644 } 1645 1646 /* 1647 * Called by LDM binding to probe and attach a new device. 1648 * Initialization sequence: 1649 * 1. allocate system omapfb_device structure 1650 * 2. select controller type according to platform configuration 1651 * init LCD panel 1652 * 3. init LCD controller and LCD DMA 1653 * 4. init system fb_info structure for all planes 1654 * 5. setup video mode for first plane and enable it 1655 * 6. enable LCD panel 1656 * 7. register sysfs attributes 1657 * OMAPFB_ACTIVE: register system fb_info structure for all planes 1658 */ 1659 static int omapfb_do_probe(struct platform_device *pdev, 1660 struct lcd_panel *panel) 1661 { 1662 struct omapfb_device *fbdev = NULL; 1663 int init_state; 1664 unsigned long phz, hhz, vhz; 1665 unsigned long vram; 1666 int i; 1667 int r = 0; 1668 1669 init_state = 0; 1670 1671 if (pdev->num_resources != 0) { 1672 dev_err(&pdev->dev, "probed for an unknown device\n"); 1673 r = -ENODEV; 1674 goto cleanup; 1675 } 1676 1677 if (dev_get_platdata(&pdev->dev) == NULL) { 1678 dev_err(&pdev->dev, "missing platform data\n"); 1679 r = -ENOENT; 1680 goto cleanup; 1681 } 1682 1683 fbdev = kzalloc(sizeof(struct omapfb_device), GFP_KERNEL); 1684 if (fbdev == NULL) { 1685 dev_err(&pdev->dev, 1686 "unable to allocate memory for device info\n"); 1687 r = -ENOMEM; 1688 goto cleanup; 1689 } 1690 init_state++; 1691 1692 fbdev->dev = &pdev->dev; 1693 fbdev->panel = panel; 1694 fbdev->dssdev = &omapdss_device; 1695 platform_set_drvdata(pdev, fbdev); 1696 1697 mutex_init(&fbdev->rqueue_mutex); 1698 1699 fbdev->int_ctrl = &omap1_int_ctrl; 1700 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL 1701 fbdev->ext_if = &omap1_ext_if; 1702 #endif 1703 if (omapfb_find_ctrl(fbdev) < 0) { 1704 dev_err(fbdev->dev, 1705 "LCD controller not found, board not supported\n"); 1706 r = -ENODEV; 1707 goto cleanup; 1708 } 1709 1710 r = fbdev->panel->init(fbdev->panel, fbdev); 1711 if (r) 1712 goto cleanup; 1713 1714 pr_info("omapfb: configured for panel %s\n", fbdev->panel->name); 1715 1716 def_vxres = def_vxres ? def_vxres : fbdev->panel->x_res; 1717 def_vyres = def_vyres ? def_vyres : fbdev->panel->y_res; 1718 1719 init_state++; 1720 1721 r = ctrl_init(fbdev); 1722 if (r) 1723 goto cleanup; 1724 if (fbdev->ctrl->mmap != NULL) 1725 omapfb_ops.fb_mmap = omapfb_mmap; 1726 init_state++; 1727 1728 check_required_callbacks(fbdev); 1729 1730 r = planes_init(fbdev); 1731 if (r) 1732 goto cleanup; 1733 init_state++; 1734 1735 #ifdef CONFIG_FB_OMAP_DMA_TUNE 1736 /* Set DMA priority for EMIFF access to highest */ 1737 omap_set_dma_priority(0, OMAP_DMA_PORT_EMIFF, 15); 1738 #endif 1739 1740 r = ctrl_change_mode(fbdev->fb_info[0]); 1741 if (r) { 1742 dev_err(fbdev->dev, "mode setting failed\n"); 1743 goto cleanup; 1744 } 1745 1746 /* GFX plane is enabled by default */ 1747 r = fbdev->ctrl->enable_plane(OMAPFB_PLANE_GFX, 1); 1748 if (r) 1749 goto cleanup; 1750 1751 omapfb_set_update_mode(fbdev, manual_update ? 1752 OMAPFB_MANUAL_UPDATE : OMAPFB_AUTO_UPDATE); 1753 init_state++; 1754 1755 r = fbdev->panel->enable(fbdev->panel); 1756 if (r) 1757 goto cleanup; 1758 init_state++; 1759 1760 r = omapfb_register_sysfs(fbdev); 1761 if (r) 1762 goto cleanup; 1763 init_state++; 1764 1765 vram = 0; 1766 for (i = 0; i < fbdev->mem_desc.region_cnt; i++) { 1767 r = register_framebuffer(fbdev->fb_info[i]); 1768 if (r != 0) { 1769 dev_err(fbdev->dev, 1770 "registering framebuffer %d failed\n", i); 1771 goto cleanup; 1772 } 1773 vram += fbdev->mem_desc.region[i].size; 1774 } 1775 1776 fbdev->state = OMAPFB_ACTIVE; 1777 1778 panel = fbdev->panel; 1779 phz = panel->pixel_clock * 1000; 1780 hhz = phz * 10 / (panel->hfp + panel->x_res + panel->hbp + panel->hsw); 1781 vhz = hhz / (panel->vfp + panel->y_res + panel->vbp + panel->vsw); 1782 1783 omapfb_dev = fbdev; 1784 1785 pr_info("omapfb: Framebuffer initialized. Total vram %lu planes %d\n", 1786 vram, fbdev->mem_desc.region_cnt); 1787 pr_info("omapfb: Pixclock %lu kHz hfreq %lu.%lu kHz " 1788 "vfreq %lu.%lu Hz\n", 1789 phz / 1000, hhz / 10000, hhz % 10, vhz / 10, vhz % 10); 1790 1791 return 0; 1792 1793 cleanup: 1794 omapfb_free_resources(fbdev, init_state); 1795 1796 return r; 1797 } 1798 1799 static int omapfb_probe(struct platform_device *pdev) 1800 { 1801 int r; 1802 1803 BUG_ON(fbdev_pdev != NULL); 1804 1805 r = platform_device_register(&omapdss_device); 1806 if (r) { 1807 dev_err(&pdev->dev, "can't register omapdss device\n"); 1808 return r; 1809 } 1810 1811 /* Delay actual initialization until the LCD is registered */ 1812 fbdev_pdev = pdev; 1813 if (fbdev_panel != NULL) 1814 omapfb_do_probe(fbdev_pdev, fbdev_panel); 1815 return 0; 1816 } 1817 1818 void omapfb_register_panel(struct lcd_panel *panel) 1819 { 1820 BUG_ON(fbdev_panel != NULL); 1821 1822 fbdev_panel = panel; 1823 if (fbdev_pdev != NULL) 1824 omapfb_do_probe(fbdev_pdev, fbdev_panel); 1825 } 1826 EXPORT_SYMBOL_GPL(omapfb_register_panel); 1827 1828 /* Called when the device is being detached from the driver */ 1829 static int omapfb_remove(struct platform_device *pdev) 1830 { 1831 struct omapfb_device *fbdev = platform_get_drvdata(pdev); 1832 enum omapfb_state saved_state = fbdev->state; 1833 1834 /* FIXME: wait till completion of pending events */ 1835 1836 fbdev->state = OMAPFB_DISABLED; 1837 omapfb_free_resources(fbdev, saved_state); 1838 1839 platform_device_unregister(&omapdss_device); 1840 fbdev->dssdev = NULL; 1841 1842 return 0; 1843 } 1844 1845 /* PM suspend */ 1846 static int omapfb_suspend(struct platform_device *pdev, pm_message_t mesg) 1847 { 1848 struct omapfb_device *fbdev = platform_get_drvdata(pdev); 1849 1850 if (fbdev != NULL) 1851 omapfb_blank(FB_BLANK_POWERDOWN, fbdev->fb_info[0]); 1852 return 0; 1853 } 1854 1855 /* PM resume */ 1856 static int omapfb_resume(struct platform_device *pdev) 1857 { 1858 struct omapfb_device *fbdev = platform_get_drvdata(pdev); 1859 1860 if (fbdev != NULL) 1861 omapfb_blank(FB_BLANK_UNBLANK, fbdev->fb_info[0]); 1862 return 0; 1863 } 1864 1865 static struct platform_driver omapfb_driver = { 1866 .probe = omapfb_probe, 1867 .remove = omapfb_remove, 1868 .suspend = omapfb_suspend, 1869 .resume = omapfb_resume, 1870 .driver = { 1871 .name = MODULE_NAME, 1872 }, 1873 }; 1874 1875 #ifndef MODULE 1876 1877 /* Process kernel command line parameters */ 1878 static int __init omapfb_setup(char *options) 1879 { 1880 char *this_opt = NULL; 1881 int r = 0; 1882 1883 pr_debug("omapfb: options %s\n", options); 1884 1885 if (!options || !*options) 1886 return 0; 1887 1888 while (!r && (this_opt = strsep(&options, ",")) != NULL) { 1889 if (!strncmp(this_opt, "accel", 5)) 1890 def_accel = 1; 1891 else if (!strncmp(this_opt, "vram:", 5)) { 1892 char *suffix; 1893 unsigned long vram; 1894 vram = (simple_strtoul(this_opt + 5, &suffix, 0)); 1895 switch (suffix[0]) { 1896 case '\0': 1897 break; 1898 case 'm': 1899 case 'M': 1900 vram *= 1024; 1901 /* Fall through */ 1902 case 'k': 1903 case 'K': 1904 vram *= 1024; 1905 break; 1906 default: 1907 pr_debug("omapfb: invalid vram suffix %c\n", 1908 suffix[0]); 1909 r = -1; 1910 } 1911 def_vram[def_vram_cnt++] = vram; 1912 } 1913 else if (!strncmp(this_opt, "vxres:", 6)) 1914 def_vxres = simple_strtoul(this_opt + 6, NULL, 0); 1915 else if (!strncmp(this_opt, "vyres:", 6)) 1916 def_vyres = simple_strtoul(this_opt + 6, NULL, 0); 1917 else if (!strncmp(this_opt, "rotate:", 7)) 1918 def_rotate = (simple_strtoul(this_opt + 7, NULL, 0)); 1919 else if (!strncmp(this_opt, "mirror:", 7)) 1920 def_mirror = (simple_strtoul(this_opt + 7, NULL, 0)); 1921 else if (!strncmp(this_opt, "manual_update", 13)) 1922 manual_update = 1; 1923 else { 1924 pr_debug("omapfb: invalid option\n"); 1925 r = -1; 1926 } 1927 } 1928 1929 return r; 1930 } 1931 1932 #endif 1933 1934 /* Register both the driver and the device */ 1935 static int __init omapfb_init(void) 1936 { 1937 #ifndef MODULE 1938 char *option; 1939 1940 if (fb_get_options("omapfb", &option)) 1941 return -ENODEV; 1942 omapfb_setup(option); 1943 #endif 1944 /* Register the driver with LDM */ 1945 if (platform_driver_register(&omapfb_driver)) { 1946 pr_debug("failed to register omapfb driver\n"); 1947 return -ENODEV; 1948 } 1949 1950 return 0; 1951 } 1952 1953 static void __exit omapfb_cleanup(void) 1954 { 1955 platform_driver_unregister(&omapfb_driver); 1956 } 1957 1958 module_param_named(accel, def_accel, uint, 0664); 1959 module_param_array_named(vram, def_vram, ulong, &def_vram_cnt, 0664); 1960 module_param_named(vxres, def_vxres, long, 0664); 1961 module_param_named(vyres, def_vyres, long, 0664); 1962 module_param_named(rotate, def_rotate, uint, 0664); 1963 module_param_named(mirror, def_mirror, uint, 0664); 1964 module_param_named(manual_update, manual_update, bool, 0664); 1965 1966 module_init(omapfb_init); 1967 module_exit(omapfb_cleanup); 1968 1969 MODULE_DESCRIPTION("TI OMAP framebuffer driver"); 1970 MODULE_AUTHOR("Imre Deak <imre.deak@nokia.com>"); 1971 MODULE_LICENSE("GPL"); 1972