drivers/video/omap/blizzard.c

   1 /*
   2  * File: drivers/video/omap/blizzard.c
   3  *
   4  * Epson Blizzard LCD controller driver
   5  *
   6  * Copyright (C) 2004-2005 Nokia Corporation
   7  * Authors:     Juha Yrjola   <juha.yrjola@nokia.com>
   8  *              Imre Deak     <imre.deak@nokia.com>
   9  * YUV support: Jussi Laako   <jussi.laako@nokia.com>
  10  *
  11  * This program is free software; you can redistribute it and/or modify it
  12  * under the terms of the GNU General Public License as published by the
  13  * Free Software Foundation; either version 2 of the License, or (at your
  14  * option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful, but
  17  * WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License along
  22  * with this program; if not, write to the Free Software Foundation, Inc.,
  23  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  24  */
  25 #include <linux/module.h>
  26 #include <linux/mm.h>
  27 #include <linux/fb.h>
  28 #include <linux/delay.h>
  29 #include <linux/clk.h>
  30
  31 #include <asm/arch/dma.h>
  32 #include <asm/arch/omapfb.h>
  33 #include <asm/arch/blizzard.h>
  34
  35 #include "dispc.h"
  36
  37 #define MODULE_NAME                             "blizzard"
  38
  39 #define BLIZZARD_REV_CODE                       0x00
  40 #define BLIZZARD_CONFIG                         0x02
  41 #define BLIZZARD_PLL_DIV                        0x04
  42 #define BLIZZARD_PLL_LOCK_RANGE                 0x06
  43 #define BLIZZARD_PLL_CLOCK_SYNTH_0              0x08
  44 #define BLIZZARD_PLL_CLOCK_SYNTH_1              0x0a
  45 #define BLIZZARD_PLL_MODE                       0x0c
  46 #define BLIZZARD_CLK_SRC                        0x0e
  47 #define BLIZZARD_MEM_BANK0_ACTIVATE             0x10
  48 #define BLIZZARD_MEM_BANK0_STATUS               0x14
  49 #define BLIZZARD_HDISP                          0x2a
  50 #define BLIZZARD_HNDP                           0x2c
  51 #define BLIZZARD_VDISP0                         0x2e
  52 #define BLIZZARD_VDISP1                         0x30
  53 #define BLIZZARD_VNDP                           0x32
  54 #define BLIZZARD_HSW                            0x34
  55 #define BLIZZARD_VSW                            0x38
  56 #define BLIZZARD_DISPLAY_MODE                   0x68
  57 #define BLIZZARD_INPUT_WIN_X_START_0            0x6c
  58 #define BLIZZARD_DATA_SOURCE_SELECT             0x8e
  59 #define BLIZZARD_DISP_MEM_DATA_PORT             0x90
  60 #define BLIZZARD_DISP_MEM_READ_ADDR0            0x92
  61 #define BLIZZARD_POWER_SAVE                     0xE6
  62 #define BLIZZARD_NDISP_CTRL_STATUS              0xE8
  63
  64 /* Data source select */
  65 /* For S1D13745 */
  66 #define BLIZZARD_SRC_WRITE_LCD_BACKGROUND       0x00
  67 #define BLIZZARD_SRC_WRITE_LCD_DESTRUCTIVE      0x01
  68 /* For S1D13744 */
  69 #define BLIZZARD_SRC_WRITE_LCD                  0x00
  70 #define BLIZZARD_SRC_BLT_LCD                    0x06
  71
  72 #define BLIZZARD_VERSION_S1D13745               0x01    /* Hailstorm */
  73 #define BLIZZARD_VERSION_S1D13744               0x02    /* Blizzard */
  74
  75 #define BLIZZARD_AUTO_UPDATE_TIME               (HZ / 20)
  76
  77 /* Reserve 4 request slots for requests in irq context */
  78 #define REQ_POOL_SIZE                   24
  79 #define IRQ_REQ_POOL_SIZE               4
  80
  81 #define REQ_FROM_IRQ_POOL 0x01
  82
  83 #define REQ_COMPLETE    0
  84 #define REQ_PENDING     1
  85
  86 struct update_param {
  87         int     plane;
  88         int     x, y, width, height;
  89         int     color_mode;
  90         int     flags;
  91 };
  92
  93 struct blizzard_request {
  94         struct list_head entry;
  95         unsigned int     flags;
  96
  97         int              (*handler)(struct blizzard_request *req);
  98         void             (*complete)(void *data);
  99         void             *complete_data;
 100
 101         union {
 102                 struct update_param     update;
 103                 struct completion       *sync;
 104         } par;
 105 };
 106
 107 struct plane_info {
 108         unsigned long offset;
 109         int pos_x, pos_y;
 110         int width, height;
 111         int out_width, out_height;
 112         int scr_width;
 113         int color_mode;
 114         int bpp;
 115 };
 116
 117 struct blizzard_struct {
 118         enum omapfb_update_mode update_mode;
 119         enum omapfb_update_mode update_mode_before_suspend;
 120
 121         struct timer_list       auto_update_timer;
 122         int                     stop_auto_update;
 123         struct omapfb_update_window     auto_update_window;
 124         int                     enabled_planes;
 125         int                     vid_nonstd_color;
 126         int                     vid_scaled;
 127         int                     screen_width;
 128         int                     screen_height;
 129         unsigned                te_connected:1;
 130         unsigned                vsync_only:1;
 131
 132         struct plane_info       plane[OMAPFB_PLANE_NUM];
 133
 134         struct blizzard_request req_pool[REQ_POOL_SIZE];
 135         struct list_head        pending_req_list;
 136         struct list_head        free_req_list;
 137         struct semaphore        req_sema;
 138         spinlock_t              req_lock;
 139
 140         unsigned long           sys_ck_rate;
 141         struct extif_timings    reg_timings, lut_timings;
 142
 143         u32                     max_transmit_size;
 144         u32                     extif_clk_period;
 145         int                     extif_clk_div;
 146         unsigned long           pix_tx_time;
 147         unsigned long           line_upd_time;
 148
 149         struct omapfb_device    *fbdev;
 150         struct lcd_ctrl_extif   *extif;
 151         struct lcd_ctrl         *int_ctrl;
 152
 153         void                    (*power_up)(struct device *dev);
 154         void                    (*power_down)(struct device *dev);
 155
 156         int                     version;
 157 } blizzard;
 158
 159 struct lcd_ctrl blizzard_ctrl;
 160
 161 static u8 blizzard_read_reg(u8 reg)
 162 {
 163         u8 data;
 164
 165         blizzard.extif->set_bits_per_cycle(8);
 166         blizzard.extif->write_command(&reg, 1);
 167         blizzard.extif->read_data(&data, 1);
 168
 169         return data;
 170 }
 171
 172 static void blizzard_write_reg(u8 reg, u8 val)
 173 {
 174         blizzard.extif->set_bits_per_cycle(8);
 175         blizzard.extif->write_command(&reg, 1);
 176         blizzard.extif->write_data(&val, 1);
 177 }
 178
 179 static void blizzard_restart_sdram(void)
 180 {
 181         unsigned long tmo;
 182
 183         blizzard_write_reg(BLIZZARD_MEM_BANK0_ACTIVATE, 0);
 184         udelay(50);
 185         blizzard_write_reg(BLIZZARD_MEM_BANK0_ACTIVATE, 1);
 186         tmo = jiffies + msecs_to_jiffies(200);
 187         while (!(blizzard_read_reg(BLIZZARD_MEM_BANK0_STATUS) & 0x01)) {
 188                 if (time_after(jiffies, tmo)) {
 189                         dev_err(blizzard.fbdev->dev,
 190                                         "s1d1374x: SDRAM not ready");
 191                         break;
 192                 }
 193                 msleep(1);
 194         }
 195 }
 196
 197 static void blizzard_stop_sdram(void)
 198 {
 199         blizzard_write_reg(BLIZZARD_MEM_BANK0_ACTIVATE, 0);
 200 }
 201
 202 /* Wait until the last window was completely written into the controllers
 203  * SDRAM and we can start transferring the next window.
 204  */
 205 static void blizzard_wait_line_buffer(void)
 206 {
 207         unsigned long tmo = jiffies + msecs_to_jiffies(30);
 208
 209         while (blizzard_read_reg(BLIZZARD_NDISP_CTRL_STATUS) & (1 << 7)) {
 210                 if (time_after(jiffies, tmo)) {
 211                         if (printk_ratelimit())
 212                                 dev_err(blizzard.fbdev->dev,
 213                                         "s1d1374x: line buffer not ready\n");
 214                         break;
 215                 }
 216         }
 217 }
 218
 219 static void set_window_regs(int x_start, int y_start, int x_end, int y_end)
 220 {
 221         u8 tmp[8];
 222         u8 cmd;
 223
 224         x_end--;
 225         y_end--;
 226         tmp[0] = x_start;
 227         tmp[1] = x_start >> 8;
 228         tmp[2] = y_start;
 229         tmp[3] = y_start >> 8;
 230         tmp[4] = x_end;
 231         tmp[5] = x_end >> 8;
 232         tmp[6] = y_end;
 233         tmp[7] = y_end >> 8;
 234
 235         blizzard.extif->set_bits_per_cycle(8);
 236         cmd = BLIZZARD_INPUT_WIN_X_START_0;
 237         blizzard.extif->write_command(&cmd, 1);
 238         blizzard.extif->write_data(tmp, 8);
 239         blizzard.extif->write_data(tmp, 8);
 240
 241         tmp[0] = 0x01;
 242         tmp[1] = blizzard.version == BLIZZARD_VERSION_S1D13744 ?
 243                                 BLIZZARD_SRC_WRITE_LCD :
 244                                 BLIZZARD_SRC_WRITE_LCD_DESTRUCTIVE;
 245         blizzard.extif->write_data(tmp, 2);
 246 }
 247
 248 static void enable_tearsync(int y, int width, int height, int screen_height,
 249                             int force_vsync)
 250 {
 251         u8 b;
 252
 253         b = blizzard_read_reg(BLIZZARD_NDISP_CTRL_STATUS);
 254         b |= 1 << 3;
 255         blizzard_write_reg(BLIZZARD_NDISP_CTRL_STATUS, b);
 256
 257         if (likely(blizzard.vsync_only || force_vsync)) {
 258                 blizzard.extif->enable_tearsync(1, 0);
 259                 return;
 260         }
 261
 262         if (width * blizzard.pix_tx_time < blizzard.line_upd_time) {
 263                 blizzard.extif->enable_tearsync(1, 0);
 264                 return;
 265         }
 266
 267         if ((width * blizzard.pix_tx_time / 1000) * height <
 268             (y + height) * (blizzard.line_upd_time / 1000)) {
 269                 blizzard.extif->enable_tearsync(1, 0);
 270                 return;
 271         }
 272
 273         blizzard.extif->enable_tearsync(1, y + 1);
 274 }
 275
 276 static void disable_tearsync(void)
 277 {
 278         u8 b;
 279
 280         blizzard.extif->enable_tearsync(0, 0);
 281         b = blizzard_read_reg(BLIZZARD_NDISP_CTRL_STATUS);
 282         b &= ~(1 << 3);
 283         blizzard_write_reg(BLIZZARD_NDISP_CTRL_STATUS, b);
 284         b = blizzard_read_reg(BLIZZARD_NDISP_CTRL_STATUS);
 285 }
 286
 287 static inline void set_extif_timings(const struct extif_timings *t);
 288
 289 static inline struct blizzard_request *alloc_req(void)
 290 {
 291         unsigned long flags;
 292         struct blizzard_request *req;
 293         int req_flags = 0;
 294
 295         if (!in_interrupt())
 296                 down(&blizzard.req_sema);
 297         else
 298                 req_flags = REQ_FROM_IRQ_POOL;
 299
 300         spin_lock_irqsave(&blizzard.req_lock, flags);
 301         BUG_ON(list_empty(&blizzard.free_req_list));
 302         req = list_entry(blizzard.free_req_list.next,
 303                          struct blizzard_request, entry);
 304         list_del(&req->entry);
 305         spin_unlock_irqrestore(&blizzard.req_lock, flags);
 306
 307         INIT_LIST_HEAD(&req->entry);
 308         req->flags = req_flags;
 309
 310         return req;
 311 }
 312
 313 static inline void free_req(struct blizzard_request *req)
 314 {
 315         unsigned long flags;
 316
 317         spin_lock_irqsave(&blizzard.req_lock, flags);
 318
 319         list_del(&req->entry);
 320         list_add(&req->entry, &blizzard.free_req_list);
 321         if (!(req->flags & REQ_FROM_IRQ_POOL))
 322                 up(&blizzard.req_sema);
 323
 324         spin_unlock_irqrestore(&blizzard.req_lock, flags);
 325 }
 326
 327 static void process_pending_requests(void)
 328 {
 329         unsigned long flags;
 330
 331         spin_lock_irqsave(&blizzard.req_lock, flags);
 332
 333         while (!list_empty(&blizzard.pending_req_list)) {
 334                 struct blizzard_request *req;
 335                 void (*complete)(void *);
 336                 void *complete_data;
 337
 338                 req = list_entry(blizzard.pending_req_list.next,
 339                                  struct blizzard_request, entry);
 340                 spin_unlock_irqrestore(&blizzard.req_lock, flags);
 341
 342                 if (req->handler(req) == REQ_PENDING)
 343                         return;
 344
 345                 complete = req->complete;
 346                 complete_data = req->complete_data;
 347                 free_req(req);
 348
 349                 if (complete)
 350                         complete(complete_data);
 351
 352                 spin_lock_irqsave(&blizzard.req_lock, flags);
 353         }
 354
 355         spin_unlock_irqrestore(&blizzard.req_lock, flags);
 356 }
 357
 358 static void submit_req_list(struct list_head *head)
 359 {
 360         unsigned long flags;
 361         int process = 1;
 362
 363         spin_lock_irqsave(&blizzard.req_lock, flags);
 364         if (likely(!list_empty(&blizzard.pending_req_list)))
 365                 process = 0;
 366         list_splice_init(head, blizzard.pending_req_list.prev);
 367         spin_unlock_irqrestore(&blizzard.req_lock, flags);
 368
 369         if (process)
 370                 process_pending_requests();
 371 }
 372
 373 static void request_complete(void *data)
 374 {
 375         struct blizzard_request *req = (struct blizzard_request *)data;
 376         void                    (*complete)(void *);
 377         void                    *complete_data;
 378
 379         complete = req->complete;
 380         complete_data = req->complete_data;
 381
 382         free_req(req);
 383
 384         if (complete)
 385                 complete(complete_data);
 386
 387         process_pending_requests();
 388 }
 389
 390
 391 static int do_full_screen_update(struct blizzard_request *req)
 392 {
 393         int i;
 394         int flags;
 395
 396         for (i = 0; i < 3; i++) {
 397                 struct plane_info *p = &blizzard.plane[i];
 398                 if (!(blizzard.enabled_planes & (1 << i))) {
 399                         blizzard.int_ctrl->enable_plane(i, 0);
 400                         continue;
 401                 }
 402                 dev_dbg(blizzard.fbdev->dev, "pw %d ph %d\n",
 403                         p->width, p->height);
 404                 blizzard.int_ctrl->setup_plane(i,
 405                                 OMAPFB_CHANNEL_OUT_LCD, p->offset,
 406                                 p->scr_width, p->pos_x, p->pos_y,
 407                                 p->width, p->height,
 408                                 p->color_mode);
 409                 blizzard.int_ctrl->enable_plane(i, 1);
 410         }
 411
 412         dev_dbg(blizzard.fbdev->dev, "sw %d sh %d\n",
 413                 blizzard.screen_width, blizzard.screen_height);
 414         blizzard_wait_line_buffer();
 415         flags = req->par.update.flags;
 416         if (flags & OMAPFB_FORMAT_FLAG_TEARSYNC)
 417                 enable_tearsync(0, blizzard.screen_width,
 418                                 blizzard.screen_height,
 419                                 blizzard.screen_height,
 420                                 flags & OMAPFB_FORMAT_FLAG_FORCE_VSYNC);
 421         else
 422                 disable_tearsync();
 423
 424         set_window_regs(0, 0, blizzard.screen_width, blizzard.screen_height);
 425
 426         blizzard.extif->set_bits_per_cycle(16);
 427         /* set_window_regs has left the register index at the right
 428          * place, so no need to set it here.
 429          */
 430         blizzard.extif->transfer_area(blizzard.screen_width,
 431                                       blizzard.screen_height,
 432                                       request_complete, req);
 433         return REQ_PENDING;
 434 }
 435
 436 /* Setup all planes with an overlapping area with the update window. */
 437 static int do_partial_update(struct blizzard_request *req, int plane,
 438                              int x, int y, int w, int h)
 439 {
 440         int i;
 441         int gx1, gy1, gx2, gy2;
 442         int flags;
 443
 444         /* Global coordinates, relative to pixel 0,0 of the LCD */
 445         gx1 = x + blizzard.plane[plane].pos_x;
 446         gy1 = y + blizzard.plane[plane].pos_y;
 447         gx2 = gx1 + w;
 448         gy2 = gy1 + h;
 449
 450         for (i = 0; i < OMAPFB_PLANE_NUM; i++) {
 451                 struct plane_info *p = &blizzard.plane[i];
 452                 int px1, py1;
 453                 int px2, py2;
 454                 int pw, ph;
 455                 int pposx, pposy;
 456                 unsigned long offset;
 457
 458                 if (!(blizzard.enabled_planes & (1 << i))) {
 459                         blizzard.int_ctrl->enable_plane(i, 0);
 460                         continue;
 461                 }
 462                 /* Plane coordinates */
 463                 if (i == plane) {
 464                         /* Plane in which we are doing the update.
 465                          * Local coordinates are the one in the update
 466                          * request.
 467                          */
 468                         px1 = x;
 469                         py1 = y;
 470                         px2 = x + w;
 471                         py2 = y + h;
 472                         pposx = 0;
 473                         pposy = 0;
 474                 } else {
 475                         /* Check if this plane has an overlapping part */
 476                         px1 = gx1 - p->pos_x;
 477                         py1 = gy1 - p->pos_y;
 478                         px2 = gx2 - p->pos_x;
 479                         py2 = gy2 - p->pos_y;
 480                         if (px1 >= p->width || py1 >= p->height ||
 481                             px2 <= 0 || py2 <= 0) {
 482                                 blizzard.int_ctrl->enable_plane(i, 0);
 483                                 continue;
 484                         }
 485                         /* Calculate the coordinates for the overlapping
 486                          * part in the plane's local coordinates.
 487                          */
 488                         pposx = -px1;
 489                         pposy = -py1;
 490                         if (px1 < 0)
 491                                 px1 = 0;
 492                         if (py1 < 0)
 493                                 py1 = 0;
 494                         if (px2 > p->width)
 495                                 px2 = p->width;
 496                         if (py2 > p->height)
 497                                 py2 = p->height;
 498                         if (pposx < 0)
 499                                 pposx = 0;
 500                         if (pposy < 0)
 501                                 pposy = 0;
 502                 }
 503                 pw = px2 - px1;
 504                 ph = py2 - py1;
 505                 offset = p->offset + (p->scr_width * py1 + px1) * p->bpp / 8;
 506 #ifdef VERBOSE
 507                 dev_dbg(blizzard.fbdev->dev,
 508                         "plane %d offset %#08lx pposx %d pposy %d "
 509                         "px1 %d py1 %d pw %d ph %d\n",
 510                         i, offset, pposx, pposy, px1, py1, pw, ph);
 511 #endif
 512                 blizzard.int_ctrl->setup_plane(i,
 513                                 OMAPFB_CHANNEL_OUT_LCD, offset,
 514                                 p->scr_width,
 515                                 pposx, pposy, pw, ph,
 516                                 p->color_mode);
 517
 518                 blizzard.int_ctrl->enable_plane(i, 1);
 519         }
 520
 521         blizzard_wait_line_buffer();
 522         flags = req->par.update.flags;
 523         if (flags & OMAPFB_FORMAT_FLAG_TEARSYNC)
 524                 enable_tearsync(gy1, gx2 - gx1, gy2 - gy1,
 525                                 blizzard.screen_height,
 526                                 flags & OMAPFB_FORMAT_FLAG_FORCE_VSYNC);
 527         else
 528                 disable_tearsync();
 529
 530         set_window_regs(gx1, gy1, gx2, gy2);
 531
 532         blizzard.extif->set_bits_per_cycle(16);
 533         /* set_window_regs has left the register index at the right
 534          * place, so no need to set it here.
 535          */
 536         blizzard.extif->transfer_area(w, h, request_complete, req);
 537
 538         return REQ_PENDING;
 539 }
 540
 541 static int send_frame_handler(struct blizzard_request *req)
 542 {
 543         struct update_param *par = &req->par.update;
 544         int plane = par->plane;
 545
 546 #ifdef VERBOSE
 547         dev_dbg(blizzard.fbdev->dev,
 548                 "send_frame: x %d y %d w %d h %d color_mode %04x flags %04x "
 549                 "planes %01x\n",
 550                 par->x, par->y, par->width, par->height,
 551                 par->color_mode, par->flags, blizzard.enabled_planes);
 552 #endif
 553
 554         if ((blizzard.enabled_planes & blizzard.vid_nonstd_color) ||
 555              (blizzard.enabled_planes & blizzard.vid_scaled))
 556                 return do_full_screen_update(req);
 557
 558         return do_partial_update(req, plane, par->x, par->y,
 559                                  par->width, par->height);
 560 }
 561
 562 static void send_frame_complete(void *data)
 563 {
 564 }
 565
 566 #define ADD_PREQ(_x, _y, _w, _h) do {           \
 567         req = alloc_req();                      \
 568         req->handler    = send_frame_handler;   \
 569         req->complete   = send_frame_complete;  \
 570         req->par.update.plane = plane;          \
 571         req->par.update.x = _x;                 \
 572         req->par.update.y = _y;                 \
 573         req->par.update.width  = _w;            \
 574         req->par.update.height = _h;            \
 575         req->par.update.color_mode = color_mode;\
 576         req->par.update.flags     = flags;      \
 577         list_add_tail(&req->entry, req_head);   \
 578 } while(0)
 579
 580 static void create_req_list(int plane,
 581                             struct omapfb_update_window *win,
 582                             struct list_head *req_head)
 583 {
 584         struct blizzard_request *req;
 585         int x = (win->x & ~0x07);
 586         int y = (win->y & ~0x07);
 587         int width = ((win->x + win->width + 7) & ~0x07) - x;
 588         int height = ((win->y + win->height + 7) & ~0x07) - y;
 589         int color_mode;
 590         int flags;
 591
 592         flags = win->format & ~OMAPFB_FORMAT_MASK;
 593         color_mode = win->format & OMAPFB_FORMAT_MASK;
 594
 595         if (x & 1) {
 596                 ADD_PREQ(x, y, 1, height);
 597                 width--;
 598                 x++;
 599                 flags &= ~OMAPFB_FORMAT_FLAG_TEARSYNC;
 600         }
 601         if (width & ~1) {
 602                 unsigned int xspan = width & ~1;
 603                 unsigned int ystart = y;
 604                 unsigned int yspan = height;
 605
 606                 if (xspan * height * 2 > blizzard.max_transmit_size) {
 607                         yspan = blizzard.max_transmit_size / (xspan * 2);
 608                         ADD_PREQ(x, ystart, xspan, yspan);
 609                         ystart += yspan;
 610                         yspan = height - yspan;
 611                         flags &= ~OMAPFB_FORMAT_FLAG_TEARSYNC;
 612                 }
 613
 614                 ADD_PREQ(x, ystart, xspan, yspan);
 615                 x += xspan;
 616                 width -= xspan;
 617                 flags &= ~OMAPFB_FORMAT_FLAG_TEARSYNC;
 618         }
 619         if (width)
 620                 ADD_PREQ(x, y, 1, height);
 621 }
 622
 623 static void auto_update_complete(void *data)
 624 {
 625         if (!blizzard.stop_auto_update)
 626                 mod_timer(&blizzard.auto_update_timer,
 627                           jiffies + BLIZZARD_AUTO_UPDATE_TIME);
 628 }
 629
 630 static void blizzard_update_window_auto(unsigned long arg)
 631 {
 632         LIST_HEAD(req_list);
 633         struct blizzard_request *last;
 634         struct omapfb_plane_struct *plane;
 635
 636         plane = blizzard.fbdev->fb_info[0]->par;
 637         create_req_list(plane->idx,
 638                         &blizzard.auto_update_window, &req_list);
 639         last = list_entry(req_list.prev, struct blizzard_request, entry);
 640
 641         last->complete = auto_update_complete;
 642         last->complete_data = NULL;
 643
 644         submit_req_list(&req_list);
 645 }
 646
 647 int blizzard_update_window_async(struct fb_info *fbi,
 648                                  struct omapfb_update_window *win,
 649                                  void (*complete_callback)(void *arg),
 650                                  void *complete_callback_data)
 651 {
 652         LIST_HEAD(req_list);
 653         struct blizzard_request *last;
 654         struct omapfb_plane_struct *plane = fbi->par;
 655
 656         if (unlikely(blizzard.update_mode != OMAPFB_MANUAL_UPDATE))
 657                 return -EINVAL;
 658         if (unlikely(!blizzard.te_connected &&
 659                      (win->format & OMAPFB_FORMAT_FLAG_TEARSYNC)))
 660                 return -EINVAL;
 661
 662         create_req_list(plane->idx, win, &req_list);
 663         last = list_entry(req_list.prev, struct blizzard_request, entry);
 664
 665         last->complete = complete_callback;
 666         last->complete_data = (void *)complete_callback_data;
 667
 668         submit_req_list(&req_list);
 669
 670         return 0;
 671 }
 672 EXPORT_SYMBOL(blizzard_update_window_async);
 673
 674 static int blizzard_setup_plane(int plane, int channel_out,
 675                                   unsigned long offset, int screen_width,
 676                                   int pos_x, int pos_y, int width, int height,
 677                                   int color_mode)
 678 {
 679         struct plane_info *p;
 680
 681 #ifdef VERBOSE
 682         dev_dbg(blizzard.fbdev->dev,
 683                     "plane %d ch_out %d offset %#08lx scr_width %d "
 684                     "pos_x %d pos_y %d width %d height %d color_mode %d\n",
 685                     plane, channel_out, offset, screen_width,
 686                     pos_x, pos_y, width, height, color_mode);
 687 #endif
 688         if ((unsigned)plane > OMAPFB_PLANE_NUM)
 689                 return -EINVAL;
 690         p = &blizzard.plane[plane];
 691
 692         switch (color_mode) {
 693         case OMAPFB_COLOR_YUV422:
 694         case OMAPFB_COLOR_YUY422:
 695                 p->bpp = 16;
 696                 blizzard.vid_nonstd_color |= 1 << plane;
 697                 break;
 698         case OMAPFB_COLOR_YUV420:
 699                 p->bpp = 12;
 700                 blizzard.vid_nonstd_color |= 1 << plane;
 701                 break;
 702         case OMAPFB_COLOR_RGB565:
 703                 p->bpp = 16;
 704                 blizzard.vid_nonstd_color &= ~(1 << plane);
 705                 break;
 706         default:
 707                 return -EINVAL;
 708         }
 709
 710         p->offset = offset;
 711         p->pos_x = pos_x;
 712         p->pos_y = pos_y;
 713         p->width = width;
 714         p->height = height;
 715         p->scr_width = screen_width;
 716         if (!p->out_width)
 717                 p->out_width = width;
 718         if (!p->out_height)
 719                 p->out_height = height;
 720
 721         p->color_mode = color_mode;
 722
 723         return 0;
 724 }
 725
 726 static int blizzard_set_scale(int plane, int orig_w, int orig_h,
 727                               int out_w, int out_h)
 728 {
 729         struct plane_info *p = &blizzard.plane[plane];
 730         int r;
 731
 732         dev_dbg(blizzard.fbdev->dev,
 733                 "plane %d orig_w %d orig_h %d out_w %d out_h %d\n",
 734                 plane, orig_w, orig_h, out_w, out_h);
 735         if ((unsigned)plane > OMAPFB_PLANE_NUM)
 736                 return -ENODEV;
 737
 738         r = blizzard.int_ctrl->set_scale(plane, orig_w, orig_h, out_w, out_h);
 739         if (r < 0)
 740                 return r;
 741
 742         p->width = orig_w;
 743         p->height = orig_h;
 744         p->out_width = out_w;
 745         p->out_height = out_h;
 746         if (orig_w == out_w && orig_h == out_h)
 747                 blizzard.vid_scaled &= ~(1 << plane);
 748         else
 749                 blizzard.vid_scaled |= 1 << plane;
 750
 751         return 0;
 752 }
 753
 754 static int blizzard_enable_plane(int plane, int enable)
 755 {
 756         if (enable)
 757                 blizzard.enabled_planes |= 1 << plane;
 758         else
 759                 blizzard.enabled_planes &= ~(1 << plane);
 760
 761         return 0;
 762 }
 763
 764 static int sync_handler(struct blizzard_request *req)
 765 {
 766         complete(req->par.sync);
 767         return REQ_COMPLETE;
 768 }
 769
 770 static void blizzard_sync(void)
 771 {
 772         LIST_HEAD(req_list);
 773         struct blizzard_request *req;
 774         struct completion comp;
 775
 776         req = alloc_req();
 777
 778         req->handler = sync_handler;
 779         req->complete = NULL;
 780         init_completion(&comp);
 781         req->par.sync = &comp;
 782
 783         list_add(&req->entry, &req_list);
 784         submit_req_list(&req_list);
 785
 786         wait_for_completion(&comp);
 787 }
 788
 789 static void blizzard_bind_client(struct omapfb_notifier_block *nb)
 790 {
 791         if (blizzard.update_mode == OMAPFB_MANUAL_UPDATE) {
 792                 omapfb_notify_clients(blizzard.fbdev, OMAPFB_EVENT_READY);
 793         }
 794 }
 795
 796 static int blizzard_set_update_mode(enum omapfb_update_mode mode)
 797 {
 798         if (unlikely(mode != OMAPFB_MANUAL_UPDATE &&
 799                      mode != OMAPFB_AUTO_UPDATE &&
 800                      mode != OMAPFB_UPDATE_DISABLED))
 801                 return -EINVAL;
 802
 803         if (mode == blizzard.update_mode)
 804                 return 0;
 805
 806         dev_info(blizzard.fbdev->dev, "s1d1374x: setting update mode to %s\n",
 807                         mode == OMAPFB_UPDATE_DISABLED ? "disabled" :
 808                         (mode == OMAPFB_AUTO_UPDATE ? "auto" : "manual"));
 809
 810         switch (blizzard.update_mode) {
 811         case OMAPFB_MANUAL_UPDATE:
 812                 omapfb_notify_clients(blizzard.fbdev, OMAPFB_EVENT_DISABLED);
 813                 break;
 814         case OMAPFB_AUTO_UPDATE:
 815                 blizzard.stop_auto_update = 1;
 816                 del_timer_sync(&blizzard.auto_update_timer);
 817                 break;
 818         case OMAPFB_UPDATE_DISABLED:
 819                 break;
 820         }
 821
 822         blizzard.update_mode = mode;
 823         blizzard_sync();
 824         blizzard.stop_auto_update = 0;
 825
 826         switch (mode) {
 827         case OMAPFB_MANUAL_UPDATE:
 828                 omapfb_notify_clients(blizzard.fbdev, OMAPFB_EVENT_READY);
 829                 break;
 830         case OMAPFB_AUTO_UPDATE:
 831                 blizzard_update_window_auto(0);
 832                 break;
 833         case OMAPFB_UPDATE_DISABLED:
 834                 break;
 835         }
 836
 837         return 0;
 838 }
 839
 840 static enum omapfb_update_mode blizzard_get_update_mode(void)
 841 {
 842         return blizzard.update_mode;
 843 }
 844
 845 static inline void set_extif_timings(const struct extif_timings *t)
 846 {
 847         blizzard.extif->set_timings(t);
 848 }
 849
 850 static inline unsigned long round_to_extif_ticks(unsigned long ps, int div)
 851 {
 852         int bus_tick = blizzard.extif_clk_period * div;
 853         return (ps + bus_tick - 1) / bus_tick * bus_tick;
 854 }
 855
 856 static int calc_reg_timing(unsigned long sysclk, int div)
 857 {
 858         struct extif_timings *t;
 859         unsigned long systim;
 860
 861         /* CSOnTime 0, WEOnTime 2 ns, REOnTime 2 ns,
 862          * AccessTime 2 ns + 12.2 ns (regs),
 863          * WEOffTime = WEOnTime + 1 ns,
 864          * REOffTime = REOnTime + 12 ns (regs),
 865          * CSOffTime = REOffTime + 1 ns
 866          * ReadCycle = 2ns + 2*SYSCLK  (regs),
 867          * WriteCycle = 2*SYSCLK + 2 ns,
 868          * CSPulseWidth = 10 ns */
 869
 870         systim = 1000000000 / (sysclk / 1000);
 871         dev_dbg(blizzard.fbdev->dev,
 872                   "Blizzard systim %lu ps extif_clk_period %u div %d\n",
 873                   systim, blizzard.extif_clk_period, div);
 874
 875         t = &blizzard.reg_timings;
 876         memset(t, 0, sizeof(*t));
 877
 878         t->clk_div = div;
 879
 880         t->cs_on_time = 0;
 881         t->we_on_time = round_to_extif_ticks(t->cs_on_time + 2000, div);
 882         t->re_on_time = round_to_extif_ticks(t->cs_on_time + 2000, div);
 883         t->access_time = round_to_extif_ticks(t->re_on_time + 12200, div);
 884         t->we_off_time = round_to_extif_ticks(t->we_on_time + 1000, div);
 885         t->re_off_time = round_to_extif_ticks(t->re_on_time + 13000, div);
 886         t->cs_off_time = round_to_extif_ticks(t->re_off_time + 1000, div);
 887         t->we_cycle_time = round_to_extif_ticks(2 * systim + 2000, div);
 888         if (t->we_cycle_time < t->we_off_time)
 889                 t->we_cycle_time = t->we_off_time;
 890         t->re_cycle_time = round_to_extif_ticks(2 * systim + 2000, div);
 891         if (t->re_cycle_time < t->re_off_time)
 892                 t->re_cycle_time = t->re_off_time;
 893         t->cs_pulse_width = 0;
 894
 895         dev_dbg(blizzard.fbdev->dev, "[reg]cson %d csoff %d reon %d reoff %d\n",
 896                  t->cs_on_time, t->cs_off_time, t->re_on_time, t->re_off_time);
 897         dev_dbg(blizzard.fbdev->dev, "[reg]weon %d weoff %d recyc %d wecyc %d\n",
 898                  t->we_on_time, t->we_off_time, t->re_cycle_time,
 899                  t->we_cycle_time);
 900         dev_dbg(blizzard.fbdev->dev, "[reg]rdaccess %d cspulse %d\n",
 901                  t->access_time, t->cs_pulse_width);
 902
 903         return blizzard.extif->convert_timings(t);
 904 }
 905
 906 static int calc_lut_timing(unsigned long sysclk, int div)
 907 {
 908         struct extif_timings *t;
 909         unsigned long systim;
 910
 911         /* CSOnTime 0, WEOnTime 2 ns, REOnTime 2 ns,
 912          * AccessTime 2 ns + 4 * SYSCLK + 26 (lut),
 913          * WEOffTime = WEOnTime + 1 ns,
 914          * REOffTime = REOnTime + 4*SYSCLK + 26 ns (lut),
 915          * CSOffTime = REOffTime + 1 ns
 916          * ReadCycle = 2ns + 4*SYSCLK + 26 ns (lut),
 917          * WriteCycle = 2*SYSCLK + 2 ns,
 918          * CSPulseWidth = 10 ns */
 919
 920         systim = 1000000000 / (sysclk / 1000);
 921         dev_dbg(blizzard.fbdev->dev,
 922                 "Blizzard systim %lu ps extif_clk_period %u div %d\n",
 923                 systim, blizzard.extif_clk_period, div);
 924
 925         t = &blizzard.lut_timings;
 926         memset(t, 0, sizeof(*t));
 927
 928         t->clk_div = div;
 929
 930         t->cs_on_time = 0;
 931         t->we_on_time = round_to_extif_ticks(t->cs_on_time + 2000, div);
 932         t->re_on_time = round_to_extif_ticks(t->cs_on_time + 2000, div);
 933         t->access_time = round_to_extif_ticks(t->re_on_time + 4 * systim +
 934                                               26000, div);
 935         t->we_off_time = round_to_extif_ticks(t->we_on_time + 1000, div);
 936         t->re_off_time = round_to_extif_ticks(t->re_on_time + 4 * systim +
 937                                               26000, div);
 938         t->cs_off_time = round_to_extif_ticks(t->re_off_time + 1000, div);
 939         t->we_cycle_time = round_to_extif_ticks(2 * systim + 2000, div);
 940         if (t->we_cycle_time < t->we_off_time)
 941                 t->we_cycle_time = t->we_off_time;
 942         t->re_cycle_time = round_to_extif_ticks(2000 + 4 * systim + 26000, div);
 943         if (t->re_cycle_time < t->re_off_time)
 944                 t->re_cycle_time = t->re_off_time;
 945         t->cs_pulse_width = 0;
 946
 947         dev_dbg(blizzard.fbdev->dev,
 948                  "[lut]cson %d csoff %d reon %d reoff %d\n",
 949                  t->cs_on_time, t->cs_off_time, t->re_on_time, t->re_off_time);
 950         dev_dbg(blizzard.fbdev->dev,
 951                  "[lut]weon %d weoff %d recyc %d wecyc %d\n",
 952                  t->we_on_time, t->we_off_time, t->re_cycle_time,
 953                  t->we_cycle_time);
 954         dev_dbg(blizzard.fbdev->dev, "[lut]rdaccess %d cspulse %d\n",
 955                  t->access_time, t->cs_pulse_width);
 956
 957         return blizzard.extif->convert_timings(t);
 958 }
 959
 960 static int calc_extif_timings(unsigned long sysclk, int *extif_mem_div)
 961 {
 962         int max_clk_div;
 963         int div;
 964
 965         blizzard.extif->get_clk_info(&blizzard.extif_clk_period, &max_clk_div);
 966         for (div = 1; div <= max_clk_div; div++) {
 967                 if (calc_reg_timing(sysclk, div) == 0)
 968                         break;
 969         }
 970         if (div > max_clk_div) {
 971                 dev_dbg(blizzard.fbdev->dev, "reg timing failed\n");
 972                 goto err;
 973         }
 974         *extif_mem_div = div;
 975
 976         for (div = 1; div <= max_clk_div; div++) {
 977                 if (calc_lut_timing(sysclk, div) == 0)
 978                         break;
 979         }
 980
 981         if (div > max_clk_div)
 982                 goto err;
 983
 984         blizzard.extif_clk_div = div;
 985
 986         return 0;
 987 err:
 988         dev_err(blizzard.fbdev->dev, "can't setup timings\n");
 989         return -1;
 990 }
 991
 992 static void calc_blizzard_clk_rates(unsigned long ext_clk,
 993                                 unsigned long *sys_clk, unsigned long *pix_clk)
 994 {
 995         int pix_clk_src;
 996         int sys_div = 0, sys_mul = 0;
 997         int pix_div;
 998
 999         pix_clk_src = blizzard_read_reg(BLIZZARD_CLK_SRC);
1000         pix_div = ((pix_clk_src >> 3) & 0x1f) + 1;
1001         if ((pix_clk_src & (0x3 << 1)) == 0) {
1002                 /* Source is the PLL */
1003                 sys_div = (blizzard_read_reg(BLIZZARD_PLL_DIV) & 0x3f) + 1;
1004                 sys_mul = blizzard_read_reg(BLIZZARD_PLL_CLOCK_SYNTH_0);
1005                 sys_mul |= ((blizzard_read_reg(BLIZZARD_PLL_CLOCK_SYNTH_1)
1006                                 & 0x0f) << 11);
1007                 *sys_clk = ext_clk * sys_mul / sys_div;
1008         } else  /* else source is ext clk, or oscillator */
1009                 *sys_clk = ext_clk;
1010
1011         *pix_clk = *sys_clk / pix_div;                  /* HZ */
1012         dev_dbg(blizzard.fbdev->dev,
1013                 "ext_clk %ld pix_src %d pix_div %d sys_div %d sys_mul %d\n",
1014                 ext_clk, pix_clk_src & (0x3 << 1), pix_div, sys_div, sys_mul);
1015         dev_dbg(blizzard.fbdev->dev, "sys_clk %ld pix_clk %ld\n",
1016                 *sys_clk, *pix_clk);
1017 }
1018
1019 static int setup_tearsync(unsigned long pix_clk, int extif_div)
1020 {
1021         int hdisp, vdisp;
1022         int hndp, vndp;
1023         int hsw, vsw;
1024         int hs, vs;
1025         int hs_pol_inv, vs_pol_inv;
1026         int use_hsvs, use_ndp;
1027         u8  b;
1028
1029         hsw = blizzard_read_reg(BLIZZARD_HSW);
1030         vsw = blizzard_read_reg(BLIZZARD_VSW);
1031         hs_pol_inv = !(hsw & 0x80);
1032         vs_pol_inv = !(vsw & 0x80);
1033         hsw = hsw & 0x7f;
1034         vsw = vsw & 0x3f;
1035
1036         hdisp = blizzard_read_reg(BLIZZARD_HDISP) * 8;
1037         vdisp = blizzard_read_reg(BLIZZARD_VDISP0) +
1038                 ((blizzard_read_reg(BLIZZARD_VDISP1) & 0x3) << 8);
1039
1040         hndp = blizzard_read_reg(BLIZZARD_HNDP) & 0x3f;
1041         vndp = blizzard_read_reg(BLIZZARD_VNDP);
1042
1043         /* time to transfer one pixel (16bpp) in ps */
1044         blizzard.pix_tx_time = blizzard.reg_timings.we_cycle_time;
1045         if (blizzard.extif->get_max_tx_rate != NULL) {
1046                 /* The external interface might have a rate limitation,
1047                  * if so, we have to maximize our transfer rate.
1048                  */
1049                 unsigned long min_tx_time;
1050                 unsigned long max_tx_rate = blizzard.extif->get_max_tx_rate();
1051
1052                 dev_dbg(blizzard.fbdev->dev, "max_tx_rate %ld HZ\n",
1053                         max_tx_rate);
1054                 min_tx_time = 1000000000 / (max_tx_rate / 1000);  /* ps */
1055                 if (blizzard.pix_tx_time < min_tx_time)
1056                         blizzard.pix_tx_time = min_tx_time;
1057         }
1058
1059         /* time to update one line in ps */
1060         blizzard.line_upd_time = (hdisp + hndp) * 1000000 / (pix_clk / 1000);
1061         blizzard.line_upd_time *= 1000;
1062         if (hdisp * blizzard.pix_tx_time > blizzard.line_upd_time)
1063                 /* transfer speed too low, we might have to use both
1064                  * HS and VS */
1065                 use_hsvs = 1;
1066         else
1067                 /* decent transfer speed, we'll always use only VS */
1068                 use_hsvs = 0;
1069
1070         if (use_hsvs && (hs_pol_inv || vs_pol_inv)) {
1071                 /* HS or'ed with VS doesn't work, use the active high
1072                  * TE signal based on HNDP / VNDP */
1073                 use_ndp = 1;
1074                 hs_pol_inv = 0;
1075                 vs_pol_inv = 0;
1076                 hs = hndp;
1077                 vs = vndp;
1078         } else {
1079                 /* Use HS or'ed with VS as a TE signal if both are needed
1080                  * or VNDP if only vsync is needed. */
1081                 use_ndp = 0;
1082                 hs = hsw;
1083                 vs = vsw;
1084                 if (!use_hsvs) {
1085                         hs_pol_inv = 0;
1086                         vs_pol_inv = 0;
1087                 }
1088         }
1089
1090         hs = hs * 1000000 / (pix_clk / 1000);             /* ps */
1091         hs *= 1000;
1092
1093         vs = vs * (hdisp + hndp) * 1000000 / (pix_clk / 1000); /* ps */
1094         vs *= 1000;
1095
1096         if (vs <= hs)
1097                 return -EDOM;
1098         /* set VS to 120% of HS to minimize VS detection time */
1099         vs = hs * 12 / 10;
1100         /* minimize HS too */
1101         if (hs > 10000)
1102                 hs = 10000;
1103
1104         b = blizzard_read_reg(BLIZZARD_NDISP_CTRL_STATUS);
1105         b &= ~0x3;
1106         b |= use_hsvs ? 1 : 0;
1107         b |= (use_ndp && use_hsvs) ? 0 : 2;
1108         blizzard_write_reg(BLIZZARD_NDISP_CTRL_STATUS, b);
1109
1110         blizzard.vsync_only = !use_hsvs;
1111
1112         dev_dbg(blizzard.fbdev->dev,
1113                 "pix_clk %ld HZ pix_tx_time %ld ps line_upd_time %ld ps\n",
1114                 pix_clk, blizzard.pix_tx_time, blizzard.line_upd_time);
1115         dev_dbg(blizzard.fbdev->dev,
1116                 "hs %d ps vs %d ps mode %d vsync_only %d\n",
1117                 hs, vs, b & 0x3, !use_hsvs);
1118
1119         return blizzard.extif->setup_tearsync(1, hs, vs,
1120                                               hs_pol_inv, vs_pol_inv,
1121                                               extif_div);
1122 }
1123
1124 static unsigned long blizzard_get_caps(void)
1125 {
1126         unsigned long caps;
1127
1128         caps = OMAPFB_CAPS_MANUAL_UPDATE;
1129         if (blizzard.te_connected)
1130                 caps |= OMAPFB_CAPS_TEARSYNC;
1131         return caps;
1132 }
1133
1134 static void blizzard_suspend(void)
1135 {
1136         u32 l;
1137         unsigned long tmo;
1138
1139         blizzard.update_mode_before_suspend = blizzard.update_mode;
1140         /* the following will disable clocks as well */
1141         blizzard_set_update_mode(OMAPFB_UPDATE_DISABLED);
1142
1143         blizzard_stop_sdram();
1144
1145         l = blizzard_read_reg(BLIZZARD_POWER_SAVE);
1146         /* Standby, Sleep. We assume we use an external clock. */
1147         l |= 0x03;
1148         blizzard_write_reg(BLIZZARD_POWER_SAVE, l);
1149
1150         tmo = jiffies + msecs_to_jiffies(100);
1151         while (!(blizzard_read_reg(BLIZZARD_PLL_MODE) & (1 << 1))) {
1152                 if (time_after(jiffies, tmo)) {
1153                         dev_err(blizzard.fbdev->dev,
1154                                 "s1d1374x: sleep timeout, stopping PLL manually\n");
1155                         l = blizzard_read_reg(BLIZZARD_PLL_MODE);
1156                         l &= ~0x03;
1157                         /* Disable PLL, counter function */
1158                         l |= 0x2;
1159                         blizzard_write_reg(BLIZZARD_PLL_MODE, l);
1160                         break;
1161                 }
1162                 msleep(1);
1163         }
1164
1165         if (blizzard.power_down != NULL)
1166                 blizzard.power_down(blizzard.fbdev->dev);
1167 }
1168
1169 static void blizzard_resume(void)
1170 {
1171         u32 l;
1172
1173         if (blizzard.power_up != NULL)
1174                 blizzard.power_up(blizzard.fbdev->dev);
1175
1176         l = blizzard_read_reg(BLIZZARD_POWER_SAVE);
1177         /* Standby, Sleep */
1178         l &= ~0x03;
1179         blizzard_write_reg(BLIZZARD_POWER_SAVE, l);
1180
1181         l = blizzard_read_reg(BLIZZARD_PLL_MODE);
1182         l &= ~0x03;
1183         /* Enable PLL, counter function */
1184         l |= 0x1;
1185         blizzard_write_reg(BLIZZARD_PLL_MODE, l);
1186
1187         while (!(blizzard_read_reg(BLIZZARD_PLL_DIV) & (1 << 7)))
1188                 msleep(1);
1189         blizzard_restart_sdram();
1190         /* Enable display */
1191         blizzard_write_reg(BLIZZARD_DISPLAY_MODE, 0x01);
1192
1193         /* the following will enable clocks as necessary */
1194         blizzard_set_update_mode(blizzard.update_mode_before_suspend);
1195 }
1196
1197 static int blizzard_init(struct omapfb_device *fbdev, int ext_mode,
1198                          struct omapfb_mem_desc *req_vram)
1199 {
1200         int r = 0, i;
1201         u8 rev, conf;
1202         unsigned long ext_clk;
1203         int extif_div;
1204         unsigned long sys_clk, pix_clk;
1205         struct omapfb_platform_data *omapfb_conf;
1206         struct blizzard_platform_data *ctrl_conf;
1207
1208         blizzard.fbdev = fbdev;
1209
1210         BUG_ON(!fbdev->ext_if || !fbdev->int_ctrl);
1211
1212         blizzard.fbdev = fbdev;
1213         blizzard.extif = fbdev->ext_if;
1214         blizzard.int_ctrl = fbdev->int_ctrl;
1215
1216         omapfb_conf = fbdev->dev->platform_data;
1217         ctrl_conf = omapfb_conf->ctrl_platform_data;
1218         if (ctrl_conf == NULL || ctrl_conf->get_clock_rate == NULL) {
1219                 dev_err(fbdev->dev, "s1d1374x: missing platform data\n");
1220                 r = -ENOENT;
1221                 goto err1;
1222         }
1223
1224         blizzard.power_down = ctrl_conf->power_down;
1225         blizzard.power_up = ctrl_conf->power_up;
1226
1227         spin_lock_init(&blizzard.req_lock);
1228
1229         if ((r = blizzard.int_ctrl->init(fbdev, 1, req_vram)) < 0)
1230                 goto err1;
1231
1232         if ((r = blizzard.extif->init(fbdev)) < 0)
1233                 goto err2;
1234
1235         blizzard_ctrl.set_color_key = blizzard.int_ctrl->set_color_key;
1236         blizzard_ctrl.get_color_key = blizzard.int_ctrl->get_color_key;
1237
1238         ext_clk = ctrl_conf->get_clock_rate(fbdev->dev);
1239         if ((r = calc_extif_timings(ext_clk, &extif_div)) < 0)
1240                 goto err3;
1241
1242         set_extif_timings(&blizzard.reg_timings);
1243
1244         if (blizzard.power_up != NULL)
1245                 blizzard.power_up(fbdev->dev);
1246
1247         calc_blizzard_clk_rates(ext_clk, &sys_clk, &pix_clk);
1248
1249         if ((r = calc_extif_timings(sys_clk, &extif_div)) < 0)
1250                 goto err3;
1251         set_extif_timings(&blizzard.reg_timings);
1252
1253         if (!(blizzard_read_reg(BLIZZARD_PLL_DIV) & 0x80)) {
1254                 dev_err(fbdev->dev,
1255                         "controller not initialized by the bootloader\n");
1256                 r = -ENODEV;
1257                 goto err3;
1258         }
1259
1260         if (ctrl_conf->te_connected) {
1261                 if ((r = setup_tearsync(pix_clk, extif_div)) < 0)
1262                         goto err3;
1263                 blizzard.te_connected = 1;
1264         }
1265
1266         rev = blizzard_read_reg(BLIZZARD_REV_CODE);
1267         conf = blizzard_read_reg(BLIZZARD_CONFIG);
1268
1269         switch (rev & 0xfc) {
1270         case 0x9c:
1271                 blizzard.version = BLIZZARD_VERSION_S1D13744;
1272                 pr_info("omapfb: s1d13744 LCD controller rev %d "
1273                         "initialized (CNF pins %x)\n", rev & 0x03, conf & 0x07);
1274                 break;
1275         case 0xa4:
1276                 blizzard.version = BLIZZARD_VERSION_S1D13745;
1277                 pr_info("omapfb: s1d13745 LCD controller rev %d "
1278                         "initialized (CNF pins %x)\n", rev & 0x03, conf & 0x07);
1279                 break;
1280         default:
1281                 dev_err(fbdev->dev, "invalid s1d1374x revision %02x\n",
1282                         rev);
1283                 r = -ENODEV;
1284                 goto err3;
1285         }
1286
1287         blizzard.max_transmit_size = blizzard.extif->max_transmit_size;
1288
1289         blizzard.update_mode = OMAPFB_UPDATE_DISABLED;
1290
1291         blizzard.auto_update_window.x = 0;
1292         blizzard.auto_update_window.y = 0;
1293         blizzard.auto_update_window.width = fbdev->panel->x_res;
1294         blizzard.auto_update_window.height = fbdev->panel->y_res;
1295         blizzard.auto_update_window.format = 0;
1296
1297         blizzard.screen_width = fbdev->panel->x_res;
1298         blizzard.screen_height = fbdev->panel->y_res;
1299
1300         init_timer(&blizzard.auto_update_timer);
1301         blizzard.auto_update_timer.function = blizzard_update_window_auto;
1302         blizzard.auto_update_timer.data = 0;
1303
1304         INIT_LIST_HEAD(&blizzard.free_req_list);
1305         INIT_LIST_HEAD(&blizzard.pending_req_list);
1306         for (i = 0; i < ARRAY_SIZE(blizzard.req_pool); i++)
1307                 list_add(&blizzard.req_pool[i].entry, &blizzard.free_req_list);
1308         BUG_ON(i <= IRQ_REQ_POOL_SIZE);
1309         sema_init(&blizzard.req_sema, i - IRQ_REQ_POOL_SIZE);
1310
1311         return 0;
1312 err3:
1313         if (blizzard.power_down != NULL)
1314                 blizzard.power_down(fbdev->dev);
1315         blizzard.extif->cleanup();
1316 err2:
1317         blizzard.int_ctrl->cleanup();
1318 err1:
1319         return r;
1320 }
1321
1322 static void blizzard_cleanup(void)
1323 {
1324         blizzard_set_update_mode(OMAPFB_UPDATE_DISABLED);
1325         blizzard.extif->cleanup();
1326         blizzard.int_ctrl->cleanup();
1327         if (blizzard.power_down != NULL)
1328                 blizzard.power_down(blizzard.fbdev->dev);
1329 }
1330
1331 struct lcd_ctrl blizzard_ctrl = {
1332         .name                   = "blizzard",
1333         .init                   = blizzard_init,
1334         .cleanup                = blizzard_cleanup,
1335         .bind_client            = blizzard_bind_client,
1336         .get_caps               = blizzard_get_caps,
1337         .set_update_mode        = blizzard_set_update_mode,
1338         .get_update_mode        = blizzard_get_update_mode,
1339         .setup_plane            = blizzard_setup_plane,
1340         .set_scale              = blizzard_set_scale,
1341         .enable_plane           = blizzard_enable_plane,
1342         .update_window          = blizzard_update_window_async,
1343         .sync                   = blizzard_sync,
1344         .suspend                = blizzard_suspend,
1345         .resume                 = blizzard_resume,
1346 };
1347