drivers/video/fsl-diu-fb.c

   1 /*
   2  * Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved.
   3  *
   4  *  Freescale DIU Frame Buffer device driver
   5  *
   6  *  Authors: Hongjun Chen <hong-jun.chen@freescale.com>
   7  *           Paul Widmer <paul.widmer@freescale.com>
   8  *           Srikanth Srinivasan <srikanth.srinivasan@freescale.com>
   9  *           York Sun <yorksun@freescale.com>
  10  *
  11  *   Based on imxfb.c Copyright (C) 2004 S.Hauer, Pengutronix
  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  */
  19
  20 #include <linux/module.h>
  21 #include <linux/kernel.h>
  22 #include <linux/errno.h>
  23 #include <linux/string.h>
  24 #include <linux/slab.h>
  25 #include <linux/fb.h>
  26 #include <linux/init.h>
  27 #include <linux/dma-mapping.h>
  28 #include <linux/platform_device.h>
  29 #include <linux/interrupt.h>
  30 #include <linux/clk.h>
  31 #include <linux/uaccess.h>
  32 #include <linux/vmalloc.h>
  33
  34 #include <linux/of_platform.h>
  35
  36 #include <sysdev/fsl_soc.h>
  37 #include "fsl-diu-fb.h"
  38
  39 /*
  40  * These parameters give default parameters
  41  * for video output 1024x768,
  42  * FIXME - change timing to proper amounts
  43  * hsync 31.5kHz, vsync 60Hz
  44  */
  45 static struct fb_videomode __devinitdata fsl_diu_default_mode = {
  46         .refresh        = 60,
  47         .xres           = 1024,
  48         .yres           = 768,
  49         .pixclock       = 15385,
  50         .left_margin    = 160,
  51         .right_margin   = 24,
  52         .upper_margin   = 29,
  53         .lower_margin   = 3,
  54         .hsync_len      = 136,
  55         .vsync_len      = 6,
  56         .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  57         .vmode          = FB_VMODE_NONINTERLACED
  58 };
  59
  60 static struct fb_videomode __devinitdata fsl_diu_mode_db[] = {
  61         {
  62                 .name           = "1024x768-60",
  63                 .refresh        = 60,
  64                 .xres           = 1024,
  65                 .yres           = 768,
  66                 .pixclock       = 15385,
  67                 .left_margin    = 160,
  68                 .right_margin   = 24,
  69                 .upper_margin   = 29,
  70                 .lower_margin   = 3,
  71                 .hsync_len      = 136,
  72                 .vsync_len      = 6,
  73                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  74                 .vmode          = FB_VMODE_NONINTERLACED
  75         },
  76         {
  77                 .name           = "1024x768-70",
  78                 .refresh        = 70,
  79                 .xres           = 1024,
  80                 .yres           = 768,
  81                 .pixclock       = 16886,
  82                 .left_margin    = 3,
  83                 .right_margin   = 3,
  84                 .upper_margin   = 2,
  85                 .lower_margin   = 2,
  86                 .hsync_len      = 40,
  87                 .vsync_len      = 18,
  88                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  89                 .vmode          = FB_VMODE_NONINTERLACED
  90         },
  91         {
  92                 .name           = "1024x768-75",
  93                 .refresh        = 75,
  94                 .xres           = 1024,
  95                 .yres           = 768,
  96                 .pixclock       = 15009,
  97                 .left_margin    = 3,
  98                 .right_margin   = 3,
  99                 .upper_margin   = 2,
 100                 .lower_margin   = 2,
 101                 .hsync_len      = 80,
 102                 .vsync_len      = 32,
 103                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 104                 .vmode          = FB_VMODE_NONINTERLACED
 105         },
 106         {
 107                 .name           = "1280x1024-60",
 108                 .refresh        = 60,
 109                 .xres           = 1280,
 110                 .yres           = 1024,
 111                 .pixclock       = 9375,
 112                 .left_margin    = 38,
 113                 .right_margin   = 128,
 114                 .upper_margin   = 2,
 115                 .lower_margin   = 7,
 116                 .hsync_len      = 216,
 117                 .vsync_len      = 37,
 118                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 119                 .vmode          = FB_VMODE_NONINTERLACED
 120         },
 121         {
 122                 .name           = "1280x1024-70",
 123                 .refresh        = 70,
 124                 .xres           = 1280,
 125                 .yres           = 1024,
 126                 .pixclock       = 9380,
 127                 .left_margin    = 6,
 128                 .right_margin   = 6,
 129                 .upper_margin   = 4,
 130                 .lower_margin   = 4,
 131                 .hsync_len      = 60,
 132                 .vsync_len      = 94,
 133                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 134                 .vmode          = FB_VMODE_NONINTERLACED
 135         },
 136         {
 137                 .name           = "1280x1024-75",
 138                 .refresh        = 75,
 139                 .xres           = 1280,
 140                 .yres           = 1024,
 141                 .pixclock       = 9380,
 142                 .left_margin    = 6,
 143                 .right_margin   = 6,
 144                 .upper_margin   = 4,
 145                 .lower_margin   = 4,
 146                 .hsync_len      = 60,
 147                 .vsync_len      = 15,
 148                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 149                 .vmode          = FB_VMODE_NONINTERLACED
 150         },
 151         {
 152                 .name           = "320x240",            /* for AOI only */
 153                 .refresh        = 60,
 154                 .xres           = 320,
 155                 .yres           = 240,
 156                 .pixclock       = 15385,
 157                 .left_margin    = 0,
 158                 .right_margin   = 0,
 159                 .upper_margin   = 0,
 160                 .lower_margin   = 0,
 161                 .hsync_len      = 0,
 162                 .vsync_len      = 0,
 163                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 164                 .vmode          = FB_VMODE_NONINTERLACED
 165         },
 166         {
 167                 .name           = "1280x480-60",
 168                 .refresh        = 60,
 169                 .xres           = 1280,
 170                 .yres           = 480,
 171                 .pixclock       = 18939,
 172                 .left_margin    = 353,
 173                 .right_margin   = 47,
 174                 .upper_margin   = 39,
 175                 .lower_margin   = 4,
 176                 .hsync_len      = 8,
 177                 .vsync_len      = 2,
 178                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 179                 .vmode          = FB_VMODE_NONINTERLACED
 180         },
 181 };
 182
 183 static char *fb_mode = "1024x768-32@60";
 184 static unsigned long default_bpp = 32;
 185 static int monitor_port;
 186
 187 #if defined(CONFIG_NOT_COHERENT_CACHE)
 188 static u8 *coherence_data;
 189 static size_t coherence_data_size;
 190 static unsigned int d_cache_line_size;
 191 #endif
 192
 193 static DEFINE_SPINLOCK(diu_lock);
 194
 195 struct fsl_diu_data {
 196         struct fb_info *fsl_diu_info[FSL_AOI_NUM - 1];
 197                                 /*FSL_AOI_NUM has one dummy AOI */
 198         struct device_attribute dev_attr;
 199         struct diu_ad *dummy_ad;
 200         void *dummy_aoi_virt;
 201         unsigned int irq;
 202         int fb_enabled;
 203         int monitor_port;
 204 };
 205
 206 struct mfb_info {
 207         int index;
 208         int type;
 209         char *id;
 210         int registered;
 211         int blank;
 212         unsigned long pseudo_palette[16];
 213         struct diu_ad *ad;
 214         int cursor_reset;
 215         unsigned char g_alpha;
 216         unsigned int count;
 217         int x_aoi_d;            /* aoi display x offset to physical screen */
 218         int y_aoi_d;            /* aoi display y offset to physical screen */
 219         struct fsl_diu_data *parent;
 220 };
 221
 222
 223 static struct mfb_info mfb_template[] = {
 224         {               /* AOI 0 for plane 0 */
 225         .index = 0,
 226         .type = MFB_TYPE_OUTPUT,
 227         .id = "Panel0",
 228         .registered = 0,
 229         .count = 0,
 230         .x_aoi_d = 0,
 231         .y_aoi_d = 0,
 232         },
 233         {               /* AOI 0 for plane 1 */
 234         .index = 1,
 235         .type = MFB_TYPE_OUTPUT,
 236         .id = "Panel1 AOI0",
 237         .registered = 0,
 238         .g_alpha = 0xff,
 239         .count = 0,
 240         .x_aoi_d = 0,
 241         .y_aoi_d = 0,
 242         },
 243         {               /* AOI 1 for plane 1 */
 244         .index = 2,
 245         .type = MFB_TYPE_OUTPUT,
 246         .id = "Panel1 AOI1",
 247         .registered = 0,
 248         .g_alpha = 0xff,
 249         .count = 0,
 250         .x_aoi_d = 0,
 251         .y_aoi_d = 480,
 252         },
 253         {               /* AOI 0 for plane 2 */
 254         .index = 3,
 255         .type = MFB_TYPE_OUTPUT,
 256         .id = "Panel2 AOI0",
 257         .registered = 0,
 258         .g_alpha = 0xff,
 259         .count = 0,
 260         .x_aoi_d = 640,
 261         .y_aoi_d = 0,
 262         },
 263         {               /* AOI 1 for plane 2 */
 264         .index = 4,
 265         .type = MFB_TYPE_OUTPUT,
 266         .id = "Panel2 AOI1",
 267         .registered = 0,
 268         .g_alpha = 0xff,
 269         .count = 0,
 270         .x_aoi_d = 640,
 271         .y_aoi_d = 480,
 272         },
 273 };
 274
 275 static struct diu_hw dr = {
 276         .mode = MFB_MODE1,
 277         .reg_lock = __SPIN_LOCK_UNLOCKED(diu_hw.reg_lock),
 278 };
 279
 280 static struct diu_pool pool;
 281
 282 /**
 283  * fsl_diu_alloc - allocate memory for the DIU
 284  * @size: number of bytes to allocate
 285  * @param: returned physical address of memory
 286  *
 287  * This function allocates a physically-contiguous block of memory.
 288  */
 289 static void *fsl_diu_alloc(size_t size, phys_addr_t *phys)
 290 {
 291         void *virt;
 292
 293         pr_debug("size=%zu\n", size);
 294
 295         virt = alloc_pages_exact(size, GFP_DMA | __GFP_ZERO);
 296         if (virt) {
 297                 *phys = virt_to_phys(virt);
 298                 pr_debug("virt=%p phys=%llx\n", virt,
 299                         (unsigned long long)*phys);
 300         }
 301
 302         return virt;
 303 }
 304
 305 /**
 306  * fsl_diu_free - release DIU memory
 307  * @virt: pointer returned by fsl_diu_alloc()
 308  * @size: number of bytes allocated by fsl_diu_alloc()
 309  *
 310  * This function releases memory allocated by fsl_diu_alloc().
 311  */
 312 static void fsl_diu_free(void *virt, size_t size)
 313 {
 314         pr_debug("virt=%p size=%zu\n", virt, size);
 315
 316         if (virt && size)
 317                 free_pages_exact(virt, size);
 318 }
 319
 320 static int fsl_diu_enable_panel(struct fb_info *info)
 321 {
 322         struct mfb_info *pmfbi, *cmfbi, *mfbi = info->par;
 323         struct diu *hw = dr.diu_reg;
 324         struct diu_ad *ad = mfbi->ad;
 325         struct fsl_diu_data *machine_data = mfbi->parent;
 326         int res = 0;
 327
 328         pr_debug("enable_panel index %d\n", mfbi->index);
 329         if (mfbi->type != MFB_TYPE_OFF) {
 330                 switch (mfbi->index) {
 331                 case 0:                         /* plane 0 */
 332                         if (hw->desc[0] != ad->paddr)
 333                                 out_be32(&hw->desc[0], ad->paddr);
 334                         break;
 335                 case 1:                         /* plane 1 AOI 0 */
 336                         cmfbi = machine_data->fsl_diu_info[2]->par;
 337                         if (hw->desc[1] != ad->paddr) { /* AOI0 closed */
 338                                 if (cmfbi->count > 0)   /* AOI1 open */
 339                                         ad->next_ad =
 340                                                 cpu_to_le32(cmfbi->ad->paddr);
 341                                 else
 342                                         ad->next_ad = 0;
 343                                 out_be32(&hw->desc[1], ad->paddr);
 344                         }
 345                         break;
 346                 case 3:                         /* plane 2 AOI 0 */
 347                         cmfbi = machine_data->fsl_diu_info[4]->par;
 348                         if (hw->desc[2] != ad->paddr) { /* AOI0 closed */
 349                                 if (cmfbi->count > 0)   /* AOI1 open */
 350                                         ad->next_ad =
 351                                                 cpu_to_le32(cmfbi->ad->paddr);
 352                                 else
 353                                         ad->next_ad = 0;
 354                                 out_be32(&hw->desc[2], ad->paddr);
 355                         }
 356                         break;
 357                 case 2:                         /* plane 1 AOI 1 */
 358                         pmfbi = machine_data->fsl_diu_info[1]->par;
 359                         ad->next_ad = 0;
 360                         if (hw->desc[1] == machine_data->dummy_ad->paddr)
 361                                 out_be32(&hw->desc[1], ad->paddr);
 362                         else                                    /* AOI0 open */
 363                                 pmfbi->ad->next_ad = cpu_to_le32(ad->paddr);
 364                         break;
 365                 case 4:                         /* plane 2 AOI 1 */
 366                         pmfbi = machine_data->fsl_diu_info[3]->par;
 367                         ad->next_ad = 0;
 368                         if (hw->desc[2] == machine_data->dummy_ad->paddr)
 369                                 out_be32(&hw->desc[2], ad->paddr);
 370                         else                            /* AOI0 was open */
 371                                 pmfbi->ad->next_ad = cpu_to_le32(ad->paddr);
 372                         break;
 373                 default:
 374                         res = -EINVAL;
 375                         break;
 376                 }
 377         } else
 378                 res = -EINVAL;
 379         return res;
 380 }
 381
 382 static int fsl_diu_disable_panel(struct fb_info *info)
 383 {
 384         struct mfb_info *pmfbi, *cmfbi, *mfbi = info->par;
 385         struct diu *hw = dr.diu_reg;
 386         struct diu_ad *ad = mfbi->ad;
 387         struct fsl_diu_data *machine_data = mfbi->parent;
 388         int res = 0;
 389
 390         switch (mfbi->index) {
 391         case 0:                                 /* plane 0 */
 392                 if (hw->desc[0] != machine_data->dummy_ad->paddr)
 393                         out_be32(&hw->desc[0],
 394                                 machine_data->dummy_ad->paddr);
 395                 break;
 396         case 1:                                 /* plane 1 AOI 0 */
 397                 cmfbi = machine_data->fsl_diu_info[2]->par;
 398                 if (cmfbi->count > 0)   /* AOI1 is open */
 399                         out_be32(&hw->desc[1], cmfbi->ad->paddr);
 400                                         /* move AOI1 to the first */
 401                 else                    /* AOI1 was closed */
 402                         out_be32(&hw->desc[1],
 403                                 machine_data->dummy_ad->paddr);
 404                                         /* close AOI 0 */
 405                 break;
 406         case 3:                                 /* plane 2 AOI 0 */
 407                 cmfbi = machine_data->fsl_diu_info[4]->par;
 408                 if (cmfbi->count > 0)   /* AOI1 is open */
 409                         out_be32(&hw->desc[2], cmfbi->ad->paddr);
 410                                         /* move AOI1 to the first */
 411                 else                    /* AOI1 was closed */
 412                         out_be32(&hw->desc[2],
 413                                 machine_data->dummy_ad->paddr);
 414                                         /* close AOI 0 */
 415                 break;
 416         case 2:                                 /* plane 1 AOI 1 */
 417                 pmfbi = machine_data->fsl_diu_info[1]->par;
 418                 if (hw->desc[1] != ad->paddr) {
 419                                 /* AOI1 is not the first in the chain */
 420                         if (pmfbi->count > 0)
 421                                         /* AOI0 is open, must be the first */
 422                                 pmfbi->ad->next_ad = 0;
 423                 } else                  /* AOI1 is the first in the chain */
 424                         out_be32(&hw->desc[1], machine_data->dummy_ad->paddr);
 425                                         /* close AOI 1 */
 426                 break;
 427         case 4:                                 /* plane 2 AOI 1 */
 428                 pmfbi = machine_data->fsl_diu_info[3]->par;
 429                 if (hw->desc[2] != ad->paddr) {
 430                                 /* AOI1 is not the first in the chain */
 431                         if (pmfbi->count > 0)
 432                                 /* AOI0 is open, must be the first */
 433                                 pmfbi->ad->next_ad = 0;
 434                 } else          /* AOI1 is the first in the chain */
 435                         out_be32(&hw->desc[2], machine_data->dummy_ad->paddr);
 436                                 /* close AOI 1 */
 437                 break;
 438         default:
 439                 res = -EINVAL;
 440                 break;
 441         }
 442
 443         return res;
 444 }
 445
 446 static void enable_lcdc(struct fb_info *info)
 447 {
 448         struct diu *hw = dr.diu_reg;
 449         struct mfb_info *mfbi = info->par;
 450         struct fsl_diu_data *machine_data = mfbi->parent;
 451
 452         if (!machine_data->fb_enabled) {
 453                 out_be32(&hw->diu_mode, dr.mode);
 454                 machine_data->fb_enabled++;
 455         }
 456 }
 457
 458 static void disable_lcdc(struct fb_info *info)
 459 {
 460         struct diu *hw = dr.diu_reg;
 461         struct mfb_info *mfbi = info->par;
 462         struct fsl_diu_data *machine_data = mfbi->parent;
 463
 464         if (machine_data->fb_enabled) {
 465                 out_be32(&hw->diu_mode, 0);
 466                 machine_data->fb_enabled = 0;
 467         }
 468 }
 469
 470 static void adjust_aoi_size_position(struct fb_var_screeninfo *var,
 471                                 struct fb_info *info)
 472 {
 473         struct mfb_info *lower_aoi_mfbi, *upper_aoi_mfbi, *mfbi = info->par;
 474         struct fsl_diu_data *machine_data = mfbi->parent;
 475         int available_height, upper_aoi_bottom, index = mfbi->index;
 476         int lower_aoi_is_open, upper_aoi_is_open;
 477         __u32 base_plane_width, base_plane_height, upper_aoi_height;
 478
 479         base_plane_width = machine_data->fsl_diu_info[0]->var.xres;
 480         base_plane_height = machine_data->fsl_diu_info[0]->var.yres;
 481
 482         switch (index) {
 483         case 0:
 484                 if (mfbi->x_aoi_d != 0)
 485                         mfbi->x_aoi_d = 0;
 486                 if (mfbi->y_aoi_d != 0)
 487                         mfbi->y_aoi_d = 0;
 488                 break;
 489         case 1:                 /* AOI 0 */
 490         case 3:
 491                 lower_aoi_mfbi = machine_data->fsl_diu_info[index+1]->par;
 492                 lower_aoi_is_open = lower_aoi_mfbi->count > 0 ? 1 : 0;
 493                 if (var->xres > base_plane_width)
 494                         var->xres = base_plane_width;
 495                 if ((mfbi->x_aoi_d + var->xres) > base_plane_width)
 496                         mfbi->x_aoi_d = base_plane_width - var->xres;
 497
 498                 if (lower_aoi_is_open)
 499                         available_height = lower_aoi_mfbi->y_aoi_d;
 500                 else
 501                         available_height = base_plane_height;
 502                 if (var->yres > available_height)
 503                         var->yres = available_height;
 504                 if ((mfbi->y_aoi_d + var->yres) > available_height)
 505                         mfbi->y_aoi_d = available_height - var->yres;
 506                 break;
 507         case 2:                 /* AOI 1 */
 508         case 4:
 509                 upper_aoi_mfbi = machine_data->fsl_diu_info[index-1]->par;
 510                 upper_aoi_height =
 511                                 machine_data->fsl_diu_info[index-1]->var.yres;
 512                 upper_aoi_bottom = upper_aoi_mfbi->y_aoi_d + upper_aoi_height;
 513                 upper_aoi_is_open = upper_aoi_mfbi->count > 0 ? 1 : 0;
 514                 if (var->xres > base_plane_width)
 515                         var->xres = base_plane_width;
 516                 if ((mfbi->x_aoi_d + var->xres) > base_plane_width)
 517                         mfbi->x_aoi_d = base_plane_width - var->xres;
 518                 if (mfbi->y_aoi_d < 0)
 519                         mfbi->y_aoi_d = 0;
 520                 if (upper_aoi_is_open) {
 521                         if (mfbi->y_aoi_d < upper_aoi_bottom)
 522                                 mfbi->y_aoi_d = upper_aoi_bottom;
 523                         available_height = base_plane_height
 524                                                 - upper_aoi_bottom;
 525                 } else
 526                         available_height = base_plane_height;
 527                 if (var->yres > available_height)
 528                         var->yres = available_height;
 529                 if ((mfbi->y_aoi_d + var->yres) > base_plane_height)
 530                         mfbi->y_aoi_d = base_plane_height - var->yres;
 531                 break;
 532         }
 533 }
 534 /*
 535  * Checks to see if the hardware supports the state requested by var passed
 536  * in. This function does not alter the hardware state! If the var passed in
 537  * is slightly off by what the hardware can support then we alter the var
 538  * PASSED in to what we can do. If the hardware doesn't support mode change
 539  * a -EINVAL will be returned by the upper layers.
 540  */
 541 static int fsl_diu_check_var(struct fb_var_screeninfo *var,
 542                                 struct fb_info *info)
 543 {
 544         unsigned long htotal, vtotal;
 545
 546         pr_debug("check_var xres: %d\n", var->xres);
 547         pr_debug("check_var yres: %d\n", var->yres);
 548
 549         if (var->xres_virtual < var->xres)
 550                 var->xres_virtual = var->xres;
 551         if (var->yres_virtual < var->yres)
 552                 var->yres_virtual = var->yres;
 553
 554         if (var->xoffset < 0)
 555                 var->xoffset = 0;
 556
 557         if (var->yoffset < 0)
 558                 var->yoffset = 0;
 559
 560         if (var->xoffset + info->var.xres > info->var.xres_virtual)
 561                 var->xoffset = info->var.xres_virtual - info->var.xres;
 562
 563         if (var->yoffset + info->var.yres > info->var.yres_virtual)
 564                 var->yoffset = info->var.yres_virtual - info->var.yres;
 565
 566         if ((var->bits_per_pixel != 32) && (var->bits_per_pixel != 24) &&
 567             (var->bits_per_pixel != 16))
 568                 var->bits_per_pixel = default_bpp;
 569
 570         switch (var->bits_per_pixel) {
 571         case 16:
 572                 var->red.length = 5;
 573                 var->red.offset = 11;
 574                 var->red.msb_right = 0;
 575
 576                 var->green.length = 6;
 577                 var->green.offset = 5;
 578                 var->green.msb_right = 0;
 579
 580                 var->blue.length = 5;
 581                 var->blue.offset = 0;
 582                 var->blue.msb_right = 0;
 583
 584                 var->transp.length = 0;
 585                 var->transp.offset = 0;
 586                 var->transp.msb_right = 0;
 587                 break;
 588         case 24:
 589                 var->red.length = 8;
 590                 var->red.offset = 0;
 591                 var->red.msb_right = 0;
 592
 593                 var->green.length = 8;
 594                 var->green.offset = 8;
 595                 var->green.msb_right = 0;
 596
 597                 var->blue.length = 8;
 598                 var->blue.offset = 16;
 599                 var->blue.msb_right = 0;
 600
 601                 var->transp.length = 0;
 602                 var->transp.offset = 0;
 603                 var->transp.msb_right = 0;
 604                 break;
 605         case 32:
 606                 var->red.length = 8;
 607                 var->red.offset = 16;
 608                 var->red.msb_right = 0;
 609
 610                 var->green.length = 8;
 611                 var->green.offset = 8;
 612                 var->green.msb_right = 0;
 613
 614                 var->blue.length = 8;
 615                 var->blue.offset = 0;
 616                 var->blue.msb_right = 0;
 617
 618                 var->transp.length = 8;
 619                 var->transp.offset = 24;
 620                 var->transp.msb_right = 0;
 621
 622                 break;
 623         }
 624         /* If the pixclock is below the minimum spec'd value then set to
 625          * refresh rate for 60Hz since this is supported by most monitors.
 626          * Refer to Documentation/fb/ for calculations.
 627          */
 628         if ((var->pixclock < MIN_PIX_CLK) || (var->pixclock > MAX_PIX_CLK)) {
 629                 htotal = var->xres + var->right_margin + var->hsync_len +
 630                     var->left_margin;
 631                 vtotal = var->yres + var->lower_margin + var->vsync_len +
 632                     var->upper_margin;
 633                 var->pixclock = (vtotal * htotal * 6UL) / 100UL;
 634                 var->pixclock = KHZ2PICOS(var->pixclock);
 635                 pr_debug("pixclock set for 60Hz refresh = %u ps\n",
 636                         var->pixclock);
 637         }
 638
 639         var->height = -1;
 640         var->width = -1;
 641         var->grayscale = 0;
 642
 643         /* Copy nonstd field to/from sync for fbset usage */
 644         var->sync |= var->nonstd;
 645         var->nonstd |= var->sync;
 646
 647         adjust_aoi_size_position(var, info);
 648         return 0;
 649 }
 650
 651 static void set_fix(struct fb_info *info)
 652 {
 653         struct fb_fix_screeninfo *fix = &info->fix;
 654         struct fb_var_screeninfo *var = &info->var;
 655         struct mfb_info *mfbi = info->par;
 656
 657         strncpy(fix->id, mfbi->id, strlen(mfbi->id));
 658         fix->line_length = var->xres_virtual * var->bits_per_pixel / 8;
 659         fix->type = FB_TYPE_PACKED_PIXELS;
 660         fix->accel = FB_ACCEL_NONE;
 661         fix->visual = FB_VISUAL_TRUECOLOR;
 662         fix->xpanstep = 1;
 663         fix->ypanstep = 1;
 664 }
 665
 666 static void update_lcdc(struct fb_info *info)
 667 {
 668         struct fb_var_screeninfo *var = &info->var;
 669         struct mfb_info *mfbi = info->par;
 670         struct fsl_diu_data *machine_data = mfbi->parent;
 671         struct diu *hw;
 672         int i, j;
 673         char __iomem *cursor_base, *gamma_table_base;
 674
 675         u32 temp;
 676
 677         hw = dr.diu_reg;
 678
 679         if (mfbi->type == MFB_TYPE_OFF) {
 680                 fsl_diu_disable_panel(info);
 681                 return;
 682         }
 683
 684         diu_ops.set_monitor_port(machine_data->monitor_port);
 685         gamma_table_base = pool.gamma.vaddr;
 686         cursor_base = pool.cursor.vaddr;
 687         /* Prep for DIU init  - gamma table, cursor table */
 688
 689         for (i = 0; i <= 2; i++)
 690            for (j = 0; j <= 255; j++)
 691               *gamma_table_base++ = j;
 692
 693         diu_ops.set_gamma_table(machine_data->monitor_port, pool.gamma.vaddr);
 694
 695         pr_debug("update-lcdc: HW - %p\n Disabling DIU\n", hw);
 696         disable_lcdc(info);
 697
 698         /* Program DIU registers */
 699
 700         out_be32(&hw->gamma, pool.gamma.paddr);
 701         out_be32(&hw->cursor, pool.cursor.paddr);
 702
 703         out_be32(&hw->bgnd, 0x007F7F7F);        /* BGND */
 704         out_be32(&hw->bgnd_wb, 0);              /* BGND_WB */
 705         out_be32(&hw->disp_size, (var->yres << 16 | var->xres));
 706                                                 /* DISP SIZE */
 707         pr_debug("DIU xres: %d\n", var->xres);
 708         pr_debug("DIU yres: %d\n", var->yres);
 709
 710         out_be32(&hw->wb_size, 0); /* WB SIZE */
 711         out_be32(&hw->wb_mem_addr, 0); /* WB MEM ADDR */
 712
 713         /* Horizontal and vertical configuration register */
 714         temp = var->left_margin << 22 | /* BP_H */
 715                var->hsync_len << 11 |   /* PW_H */
 716                var->right_margin;       /* FP_H */
 717
 718         out_be32(&hw->hsyn_para, temp);
 719
 720         temp = var->upper_margin << 22 | /* BP_V */
 721                var->vsync_len << 11 |    /* PW_V  */
 722                var->lower_margin;        /* FP_V  */
 723
 724         out_be32(&hw->vsyn_para, temp);
 725
 726         pr_debug("DIU right_margin - %d\n", var->right_margin);
 727         pr_debug("DIU left_margin - %d\n", var->left_margin);
 728         pr_debug("DIU hsync_len - %d\n", var->hsync_len);
 729         pr_debug("DIU upper_margin - %d\n", var->upper_margin);
 730         pr_debug("DIU lower_margin - %d\n", var->lower_margin);
 731         pr_debug("DIU vsync_len - %d\n", var->vsync_len);
 732         pr_debug("DIU HSYNC - 0x%08x\n", hw->hsyn_para);
 733         pr_debug("DIU VSYNC - 0x%08x\n", hw->vsyn_para);
 734
 735         diu_ops.set_pixel_clock(var->pixclock);
 736
 737         out_be32(&hw->syn_pol, 0);      /* SYNC SIGNALS POLARITY */
 738         out_be32(&hw->thresholds, 0x00037800); /* The Thresholds */
 739         out_be32(&hw->int_status, 0);   /* INTERRUPT STATUS */
 740         out_be32(&hw->plut, 0x01F5F666);
 741
 742         /* Enable the DIU */
 743         enable_lcdc(info);
 744 }
 745
 746 static int map_video_memory(struct fb_info *info)
 747 {
 748         phys_addr_t phys;
 749
 750         pr_debug("info->var.xres_virtual = %d\n", info->var.xres_virtual);
 751         pr_debug("info->var.yres_virtual = %d\n", info->var.yres_virtual);
 752         pr_debug("info->fix.line_length  = %d\n", info->fix.line_length);
 753
 754         info->fix.smem_len = info->fix.line_length * info->var.yres_virtual;
 755         pr_debug("MAP_VIDEO_MEMORY: smem_len = %d\n", info->fix.smem_len);
 756         info->screen_base = fsl_diu_alloc(info->fix.smem_len, &phys);
 757         if (info->screen_base == NULL) {
 758                 printk(KERN_ERR "Unable to allocate fb memory\n");
 759                 return -ENOMEM;
 760         }
 761         info->fix.smem_start = (unsigned long) phys;
 762         info->screen_size = info->fix.smem_len;
 763
 764         pr_debug("Allocated fb @ paddr=0x%08lx, size=%d.\n",
 765                                 info->fix.smem_start,
 766                 info->fix.smem_len);
 767         pr_debug("screen base %p\n", info->screen_base);
 768
 769         return 0;
 770 }
 771
 772 static void unmap_video_memory(struct fb_info *info)
 773 {
 774         fsl_diu_free(info->screen_base, info->fix.smem_len);
 775         info->screen_base = NULL;
 776         info->fix.smem_start = 0;
 777         info->fix.smem_len = 0;
 778 }
 779
 780 /*
 781  * Using the fb_var_screeninfo in fb_info we set the resolution of this
 782  * particular framebuffer. This function alters the fb_fix_screeninfo stored
 783  * in fb_info. It does not alter var in fb_info since we are using that
 784  * data. This means we depend on the data in var inside fb_info to be
 785  * supported by the hardware. fsl_diu_check_var is always called before
 786  * fsl_diu_set_par to ensure this.
 787  */
 788 static int fsl_diu_set_par(struct fb_info *info)
 789 {
 790         unsigned long len;
 791         struct fb_var_screeninfo *var = &info->var;
 792         struct mfb_info *mfbi = info->par;
 793         struct fsl_diu_data *machine_data = mfbi->parent;
 794         struct diu_ad *ad = mfbi->ad;
 795         struct diu *hw;
 796
 797         hw = dr.diu_reg;
 798
 799         set_fix(info);
 800         mfbi->cursor_reset = 1;
 801
 802         len = info->var.yres_virtual * info->fix.line_length;
 803         /* Alloc & dealloc each time resolution/bpp change */
 804         if (len != info->fix.smem_len) {
 805                 if (info->fix.smem_start)
 806                         unmap_video_memory(info);
 807                 pr_debug("SET PAR: smem_len = %d\n", info->fix.smem_len);
 808
 809                 /* Memory allocation for framebuffer */
 810                 if (map_video_memory(info)) {
 811                         printk(KERN_ERR "Unable to allocate fb memory 1\n");
 812                         return -ENOMEM;
 813                 }
 814         }
 815
 816         ad->pix_fmt =
 817                 diu_ops.get_pixel_format(var->bits_per_pixel,
 818                                          machine_data->monitor_port);
 819         ad->addr    = cpu_to_le32(info->fix.smem_start);
 820         ad->src_size_g_alpha = cpu_to_le32((var->yres << 12) |
 821                                 var->xres) | mfbi->g_alpha;
 822         /* fix me. AOI should not be greater than display size */
 823         ad->aoi_size    = cpu_to_le32((var->yres << 16) | var->xres);
 824         ad->offset_xyi = 0;
 825         ad->offset_xyd = cpu_to_le32((mfbi->y_aoi_d << 16) | mfbi->x_aoi_d);
 826
 827         /* Disable chroma keying function */
 828         ad->ckmax_r = 0;
 829         ad->ckmax_g = 0;
 830         ad->ckmax_b = 0;
 831
 832         ad->ckmin_r = 255;
 833         ad->ckmin_g = 255;
 834         ad->ckmin_b = 255;
 835
 836         if (mfbi->index == 0)
 837                 update_lcdc(info);
 838         return 0;
 839 }
 840
 841 static inline __u32 CNVT_TOHW(__u32 val, __u32 width)
 842 {
 843         return ((val<<width) + 0x7FFF - val)>>16;
 844 }
 845
 846 /*
 847  * Set a single color register. The values supplied have a 16 bit magnitude
 848  * which needs to be scaled in this function for the hardware. Things to take
 849  * into consideration are how many color registers, if any, are supported with
 850  * the current color visual. With truecolor mode no color palettes are
 851  * supported. Here a psuedo palette is created which we store the value in
 852  * pseudo_palette in struct fb_info. For pseudocolor mode we have a limited
 853  * color palette.
 854  */
 855 static int fsl_diu_setcolreg(unsigned regno, unsigned red, unsigned green,
 856                            unsigned blue, unsigned transp, struct fb_info *info)
 857 {
 858         int ret = 1;
 859
 860         /*
 861          * If greyscale is true, then we convert the RGB value
 862          * to greyscale no matter what visual we are using.
 863          */
 864         if (info->var.grayscale)
 865                 red = green = blue = (19595 * red + 38470 * green +
 866                                       7471 * blue) >> 16;
 867         switch (info->fix.visual) {
 868         case FB_VISUAL_TRUECOLOR:
 869                 /*
 870                  * 16-bit True Colour.  We encode the RGB value
 871                  * according to the RGB bitfield information.
 872                  */
 873                 if (regno < 16) {
 874                         u32 *pal = info->pseudo_palette;
 875                         u32 v;
 876
 877                         red = CNVT_TOHW(red, info->var.red.length);
 878                         green = CNVT_TOHW(green, info->var.green.length);
 879                         blue = CNVT_TOHW(blue, info->var.blue.length);
 880                         transp = CNVT_TOHW(transp, info->var.transp.length);
 881
 882                         v = (red << info->var.red.offset) |
 883                             (green << info->var.green.offset) |
 884                             (blue << info->var.blue.offset) |
 885                             (transp << info->var.transp.offset);
 886
 887                         pal[regno] = v;
 888                         ret = 0;
 889                 }
 890                 break;
 891         case FB_VISUAL_STATIC_PSEUDOCOLOR:
 892         case FB_VISUAL_PSEUDOCOLOR:
 893                 break;
 894         }
 895
 896         return ret;
 897 }
 898
 899 /*
 900  * Pan (or wrap, depending on the `vmode' field) the display using the
 901  * 'xoffset' and 'yoffset' fields of the 'var' structure. If the values
 902  * don't fit, return -EINVAL.
 903  */
 904 static int fsl_diu_pan_display(struct fb_var_screeninfo *var,
 905                              struct fb_info *info)
 906 {
 907         if ((info->var.xoffset == var->xoffset) &&
 908             (info->var.yoffset == var->yoffset))
 909                 return 0;       /* No change, do nothing */
 910
 911         if (var->xoffset < 0 || var->yoffset < 0
 912             || var->xoffset + info->var.xres > info->var.xres_virtual
 913             || var->yoffset + info->var.yres > info->var.yres_virtual)
 914                 return -EINVAL;
 915
 916         info->var.xoffset = var->xoffset;
 917         info->var.yoffset = var->yoffset;
 918
 919         if (var->vmode & FB_VMODE_YWRAP)
 920                 info->var.vmode |= FB_VMODE_YWRAP;
 921         else
 922                 info->var.vmode &= ~FB_VMODE_YWRAP;
 923
 924         return 0;
 925 }
 926
 927 /*
 928  * Blank the screen if blank_mode != 0, else unblank. Return 0 if blanking
 929  * succeeded, != 0 if un-/blanking failed.
 930  * blank_mode == 2: suspend vsync
 931  * blank_mode == 3: suspend hsync
 932  * blank_mode == 4: powerdown
 933  */
 934 static int fsl_diu_blank(int blank_mode, struct fb_info *info)
 935 {
 936         struct mfb_info *mfbi = info->par;
 937
 938         mfbi->blank = blank_mode;
 939
 940         switch (blank_mode) {
 941         case FB_BLANK_VSYNC_SUSPEND:
 942         case FB_BLANK_HSYNC_SUSPEND:
 943         /* FIXME: fixes to enable_panel and enable lcdc needed */
 944         case FB_BLANK_NORMAL:
 945         /*      fsl_diu_disable_panel(info);*/
 946                 break;
 947         case FB_BLANK_POWERDOWN:
 948         /*      disable_lcdc(info);     */
 949                 break;
 950         case FB_BLANK_UNBLANK:
 951         /*      fsl_diu_enable_panel(info);*/
 952                 break;
 953         }
 954
 955         return 0;
 956 }
 957
 958 static int fsl_diu_ioctl(struct fb_info *info, unsigned int cmd,
 959                        unsigned long arg)
 960 {
 961         struct mfb_info *mfbi = info->par;
 962         struct diu_ad *ad = mfbi->ad;
 963         struct mfb_chroma_key ck;
 964         unsigned char global_alpha;
 965         struct aoi_display_offset aoi_d;
 966         __u32 pix_fmt;
 967         void __user *buf = (void __user *)arg;
 968
 969         if (!arg)
 970                 return -EINVAL;
 971         switch (cmd) {
 972         case MFB_SET_PIXFMT:
 973                 if (copy_from_user(&pix_fmt, buf, sizeof(pix_fmt)))
 974                         return -EFAULT;
 975                 ad->pix_fmt = pix_fmt;
 976                 pr_debug("Set pixel format to 0x%08x\n", ad->pix_fmt);
 977                 break;
 978         case MFB_GET_PIXFMT:
 979                 pix_fmt = ad->pix_fmt;
 980                 if (copy_to_user(buf, &pix_fmt, sizeof(pix_fmt)))
 981                         return -EFAULT;
 982                 pr_debug("get pixel format 0x%08x\n", ad->pix_fmt);
 983                 break;
 984         case MFB_SET_AOID:
 985                 if (copy_from_user(&aoi_d, buf, sizeof(aoi_d)))
 986                         return -EFAULT;
 987                 mfbi->x_aoi_d = aoi_d.x_aoi_d;
 988                 mfbi->y_aoi_d = aoi_d.y_aoi_d;
 989                 pr_debug("set AOI display offset of index %d to (%d,%d)\n",
 990                                  mfbi->index, aoi_d.x_aoi_d, aoi_d.y_aoi_d);
 991                 fsl_diu_check_var(&info->var, info);
 992                 fsl_diu_set_par(info);
 993                 break;
 994         case MFB_GET_AOID:
 995                 aoi_d.x_aoi_d = mfbi->x_aoi_d;
 996                 aoi_d.y_aoi_d = mfbi->y_aoi_d;
 997                 if (copy_to_user(buf, &aoi_d, sizeof(aoi_d)))
 998                         return -EFAULT;
 999                 pr_debug("get AOI display offset of index %d (%d,%d)\n",
1000                                 mfbi->index, aoi_d.x_aoi_d, aoi_d.y_aoi_d);
1001                 break;
1002         case MFB_GET_ALPHA:
1003                 global_alpha = mfbi->g_alpha;
1004                 if (copy_to_user(buf, &global_alpha, sizeof(global_alpha)))
1005                         return -EFAULT;
1006                 pr_debug("get global alpha of index %d\n", mfbi->index);
1007                 break;
1008         case MFB_SET_ALPHA:
1009                 /* set panel information */
1010                 if (copy_from_user(&global_alpha, buf, sizeof(global_alpha)))
1011                         return -EFAULT;
1012                 ad->src_size_g_alpha = (ad->src_size_g_alpha & (~0xff)) |
1013                                                         (global_alpha & 0xff);
1014                 mfbi->g_alpha = global_alpha;
1015                 pr_debug("set global alpha for index %d\n", mfbi->index);
1016                 break;
1017         case MFB_SET_CHROMA_KEY:
1018                 /* set panel winformation */
1019                 if (copy_from_user(&ck, buf, sizeof(ck)))
1020                         return -EFAULT;
1021
1022                 if (ck.enable &&
1023                    (ck.red_max < ck.red_min ||
1024                     ck.green_max < ck.green_min ||
1025                     ck.blue_max < ck.blue_min))
1026                         return -EINVAL;
1027
1028                 if (!ck.enable) {
1029                         ad->ckmax_r = 0;
1030                         ad->ckmax_g = 0;
1031                         ad->ckmax_b = 0;
1032                         ad->ckmin_r = 255;
1033                         ad->ckmin_g = 255;
1034                         ad->ckmin_b = 255;
1035                 } else {
1036                         ad->ckmax_r = ck.red_max;
1037                         ad->ckmax_g = ck.green_max;
1038                         ad->ckmax_b = ck.blue_max;
1039                         ad->ckmin_r = ck.red_min;
1040                         ad->ckmin_g = ck.green_min;
1041                         ad->ckmin_b = ck.blue_min;
1042                 }
1043                 pr_debug("set chroma key\n");
1044                 break;
1045         case FBIOGET_GWINFO:
1046                 if (mfbi->type == MFB_TYPE_OFF)
1047                         return -ENODEV;
1048                 /* get graphic window information */
1049                 if (copy_to_user(buf, ad, sizeof(*ad)))
1050                         return -EFAULT;
1051                 break;
1052         case FBIOGET_HWCINFO:
1053                 pr_debug("FBIOGET_HWCINFO:0x%08x\n", FBIOGET_HWCINFO);
1054                 break;
1055         case FBIOPUT_MODEINFO:
1056                 pr_debug("FBIOPUT_MODEINFO:0x%08x\n", FBIOPUT_MODEINFO);
1057                 break;
1058         case FBIOGET_DISPINFO:
1059                 pr_debug("FBIOGET_DISPINFO:0x%08x\n", FBIOGET_DISPINFO);
1060                 break;
1061
1062         default:
1063                 printk(KERN_ERR "Unknown ioctl command (0x%08X)\n", cmd);
1064                 return -ENOIOCTLCMD;
1065         }
1066
1067         return 0;
1068 }
1069
1070 /* turn on fb if count == 1
1071  */
1072 static int fsl_diu_open(struct fb_info *info, int user)
1073 {
1074         struct mfb_info *mfbi = info->par;
1075         int res = 0;
1076
1077         spin_lock(&diu_lock);
1078         mfbi->count++;
1079         if (mfbi->count == 1) {
1080                 pr_debug("open plane index %d\n", mfbi->index);
1081                 fsl_diu_check_var(&info->var, info);
1082                 res = fsl_diu_set_par(info);
1083                 if (res < 0)
1084                         mfbi->count--;
1085                 else {
1086                         res = fsl_diu_enable_panel(info);
1087                         if (res < 0)
1088                                 mfbi->count--;
1089                 }
1090         }
1091
1092         spin_unlock(&diu_lock);
1093         return res;
1094 }
1095
1096 /* turn off fb if count == 0
1097  */
1098 static int fsl_diu_release(struct fb_info *info, int user)
1099 {
1100         struct mfb_info *mfbi = info->par;
1101         int res = 0;
1102
1103         spin_lock(&diu_lock);
1104         mfbi->count--;
1105         if (mfbi->count == 0) {
1106                 pr_debug("release plane index %d\n", mfbi->index);
1107                 res = fsl_diu_disable_panel(info);
1108                 if (res < 0)
1109                         mfbi->count++;
1110         }
1111         spin_unlock(&diu_lock);
1112         return res;
1113 }
1114
1115 static struct fb_ops fsl_diu_ops = {
1116         .owner = THIS_MODULE,
1117         .fb_check_var = fsl_diu_check_var,
1118         .fb_set_par = fsl_diu_set_par,
1119         .fb_setcolreg = fsl_diu_setcolreg,
1120         .fb_blank = fsl_diu_blank,
1121         .fb_pan_display = fsl_diu_pan_display,
1122         .fb_fillrect = cfb_fillrect,
1123         .fb_copyarea = cfb_copyarea,
1124         .fb_imageblit = cfb_imageblit,
1125         .fb_ioctl = fsl_diu_ioctl,
1126         .fb_open = fsl_diu_open,
1127         .fb_release = fsl_diu_release,
1128 };
1129
1130 static int init_fbinfo(struct fb_info *info)
1131 {
1132         struct mfb_info *mfbi = info->par;
1133
1134         info->device = NULL;
1135         info->var.activate = FB_ACTIVATE_NOW;
1136         info->fbops = &fsl_diu_ops;
1137         info->flags = FBINFO_FLAG_DEFAULT;
1138         info->pseudo_palette = &mfbi->pseudo_palette;
1139
1140         /* Allocate colormap */
1141         fb_alloc_cmap(&info->cmap, 16, 0);
1142         return 0;
1143 }
1144
1145 static int __devinit install_fb(struct fb_info *info)
1146 {
1147         int rc;
1148         struct mfb_info *mfbi = info->par;
1149         const char *aoi_mode, *init_aoi_mode = "320x240";
1150
1151         if (init_fbinfo(info))
1152                 return -EINVAL;
1153
1154         if (mfbi->index == 0)   /* plane 0 */
1155                 aoi_mode = fb_mode;
1156         else
1157                 aoi_mode = init_aoi_mode;
1158         pr_debug("mode used = %s\n", aoi_mode);
1159         rc = fb_find_mode(&info->var, info, aoi_mode, fsl_diu_mode_db,
1160              ARRAY_SIZE(fsl_diu_mode_db), &fsl_diu_default_mode, default_bpp);
1161
1162         switch (rc) {
1163         case 1:
1164                 pr_debug("using mode specified in @mode\n");
1165                 break;
1166         case 2:
1167                 pr_debug("using mode specified in @mode "
1168                         "with ignored refresh rate\n");
1169                 break;
1170         case 3:
1171                 pr_debug("using mode default mode\n");
1172                 break;
1173         case 4:
1174                 pr_debug("using mode from list\n");
1175                 break;
1176         default:
1177                 pr_debug("rc = %d\n", rc);
1178                 pr_debug("failed to find mode\n");
1179                 return -EINVAL;
1180                 break;
1181         }
1182
1183         pr_debug("xres_virtual %d\n", info->var.xres_virtual);
1184         pr_debug("bits_per_pixel %d\n", info->var.bits_per_pixel);
1185
1186         pr_debug("info->var.yres_virtual = %d\n", info->var.yres_virtual);
1187         pr_debug("info->fix.line_length = %d\n", info->fix.line_length);
1188
1189         if (mfbi->type == MFB_TYPE_OFF)
1190                 mfbi->blank = FB_BLANK_NORMAL;
1191         else
1192                 mfbi->blank = FB_BLANK_UNBLANK;
1193
1194         if (fsl_diu_check_var(&info->var, info)) {
1195                 printk(KERN_ERR "fb_check_var failed");
1196                 fb_dealloc_cmap(&info->cmap);
1197                 return -EINVAL;
1198         }
1199
1200         if (fsl_diu_set_par(info)) {
1201                 printk(KERN_ERR "fb_set_par failed");
1202                 fb_dealloc_cmap(&info->cmap);
1203                 return -EINVAL;
1204         }
1205
1206         if (register_framebuffer(info) < 0) {
1207                 printk(KERN_ERR "register_framebuffer failed");
1208                 unmap_video_memory(info);
1209                 fb_dealloc_cmap(&info->cmap);
1210                 return -EINVAL;
1211         }
1212
1213         mfbi->registered = 1;
1214         printk(KERN_INFO "fb%d: %s fb device registered successfully.\n",
1215                  info->node, info->fix.id);
1216
1217         return 0;
1218 }
1219
1220 static void uninstall_fb(struct fb_info *info)
1221 {
1222         struct mfb_info *mfbi = info->par;
1223
1224         if (!mfbi->registered)
1225                 return;
1226
1227         unregister_framebuffer(info);
1228         unmap_video_memory(info);
1229         if (&info->cmap)
1230                 fb_dealloc_cmap(&info->cmap);
1231
1232         mfbi->registered = 0;
1233 }
1234
1235 static irqreturn_t fsl_diu_isr(int irq, void *dev_id)
1236 {
1237         struct diu *hw = dr.diu_reg;
1238         unsigned int status = in_be32(&hw->int_status);
1239
1240         if (status) {
1241                 /* This is the workaround for underrun */
1242                 if (status & INT_UNDRUN) {
1243                         out_be32(&hw->diu_mode, 0);
1244                         pr_debug("Err: DIU occurs underrun!\n");
1245                         udelay(1);
1246                         out_be32(&hw->diu_mode, 1);
1247                 }
1248 #if defined(CONFIG_NOT_COHERENT_CACHE)
1249                 else if (status & INT_VSYNC) {
1250                         unsigned int i;
1251                         for (i = 0; i < coherence_data_size;
1252                                 i += d_cache_line_size)
1253                                 __asm__ __volatile__ (
1254                                         "dcbz 0, %[input]"
1255                                 ::[input]"r"(&coherence_data[i]));
1256                 }
1257 #endif
1258                 return IRQ_HANDLED;
1259         }
1260         return IRQ_NONE;
1261 }
1262
1263 static int request_irq_local(int irq)
1264 {
1265         unsigned long status, ints;
1266         struct diu *hw;
1267         int ret;
1268
1269         hw = dr.diu_reg;
1270
1271         /* Read to clear the status */
1272         status = in_be32(&hw->int_status);
1273
1274         ret = request_irq(irq, fsl_diu_isr, 0, "diu", NULL);
1275         if (ret)
1276                 pr_info("Request diu IRQ failed.\n");
1277         else {
1278                 ints = INT_PARERR | INT_LS_BF_VS;
1279 #if !defined(CONFIG_NOT_COHERENT_CACHE)
1280                 ints |= INT_VSYNC;
1281 #endif
1282                 if (dr.mode == MFB_MODE2 || dr.mode == MFB_MODE3)
1283                         ints |= INT_VSYNC_WB;
1284
1285                 /* Read to clear the status */
1286                 status = in_be32(&hw->int_status);
1287                 out_be32(&hw->int_mask, ints);
1288         }
1289         return ret;
1290 }
1291
1292 static void free_irq_local(int irq)
1293 {
1294         struct diu *hw = dr.diu_reg;
1295
1296         /* Disable all LCDC interrupt */
1297         out_be32(&hw->int_mask, 0x1f);
1298
1299         free_irq(irq, NULL);
1300 }
1301
1302 #ifdef CONFIG_PM
1303 /*
1304  * Power management hooks. Note that we won't be called from IRQ context,
1305  * unlike the blank functions above, so we may sleep.
1306  */
1307 static int fsl_diu_suspend(struct of_device *ofdev, pm_message_t state)
1308 {
1309         struct fsl_diu_data *machine_data;
1310
1311         machine_data = dev_get_drvdata(&ofdev->dev);
1312         disable_lcdc(machine_data->fsl_diu_info[0]);
1313
1314         return 0;
1315 }
1316
1317 static int fsl_diu_resume(struct of_device *ofdev)
1318 {
1319         struct fsl_diu_data *machine_data;
1320
1321         machine_data = dev_get_drvdata(&ofdev->dev);
1322         enable_lcdc(machine_data->fsl_diu_info[0]);
1323
1324         return 0;
1325 }
1326
1327 #else
1328 #define fsl_diu_suspend NULL
1329 #define fsl_diu_resume NULL
1330 #endif                          /* CONFIG_PM */
1331
1332 /* Align to 64-bit(8-byte), 32-byte, etc. */
1333 static int allocate_buf(struct diu_addr *buf, u32 size, u32 bytes_align)
1334 {
1335         u32 offset, ssize;
1336         u32 mask;
1337         dma_addr_t paddr = 0;
1338
1339         ssize = size + bytes_align;
1340         buf->vaddr = dma_alloc_coherent(NULL, ssize, &paddr, GFP_DMA |
1341                                                              __GFP_ZERO);
1342         if (!buf->vaddr)
1343                 return -ENOMEM;
1344
1345         buf->paddr = (__u32) paddr;
1346
1347         mask = bytes_align - 1;
1348         offset = (u32)buf->paddr & mask;
1349         if (offset) {
1350                 buf->offset = bytes_align - offset;
1351                 buf->paddr = (u32)buf->paddr + offset;
1352         } else
1353                 buf->offset = 0;
1354         return 0;
1355 }
1356
1357 static void free_buf(struct diu_addr *buf, u32 size, u32 bytes_align)
1358 {
1359         dma_free_coherent(NULL, size + bytes_align,
1360                                 buf->vaddr, (buf->paddr - buf->offset));
1361         return;
1362 }
1363
1364 static ssize_t store_monitor(struct device *device,
1365         struct device_attribute *attr, const char *buf, size_t count)
1366 {
1367         int old_monitor_port;
1368         unsigned long val;
1369         struct fsl_diu_data *machine_data =
1370                 container_of(attr, struct fsl_diu_data, dev_attr);
1371
1372         if (strict_strtoul(buf, 10, &val))
1373                 return 0;
1374
1375         old_monitor_port = machine_data->monitor_port;
1376         machine_data->monitor_port = diu_ops.set_sysfs_monitor_port(val);
1377
1378         if (old_monitor_port != machine_data->monitor_port) {
1379                 /* All AOIs need adjust pixel format
1380                  * fsl_diu_set_par only change the pixsel format here
1381                  * unlikely to fail. */
1382                 fsl_diu_set_par(machine_data->fsl_diu_info[0]);
1383                 fsl_diu_set_par(machine_data->fsl_diu_info[1]);
1384                 fsl_diu_set_par(machine_data->fsl_diu_info[2]);
1385                 fsl_diu_set_par(machine_data->fsl_diu_info[3]);
1386                 fsl_diu_set_par(machine_data->fsl_diu_info[4]);
1387         }
1388         return count;
1389 }
1390
1391 static ssize_t show_monitor(struct device *device,
1392         struct device_attribute *attr, char *buf)
1393 {
1394         struct fsl_diu_data *machine_data =
1395                 container_of(attr, struct fsl_diu_data, dev_attr);
1396         return diu_ops.show_monitor_port(machine_data->monitor_port, buf);
1397 }
1398
1399 static int __devinit fsl_diu_probe(struct of_device *ofdev,
1400         const struct of_device_id *match)
1401 {
1402         struct device_node *np = ofdev->node;
1403         struct mfb_info *mfbi;
1404         phys_addr_t dummy_ad_addr;
1405         int ret, i, error = 0;
1406         struct resource res;
1407         struct fsl_diu_data *machine_data;
1408
1409         machine_data = kzalloc(sizeof(struct fsl_diu_data), GFP_KERNEL);
1410         if (!machine_data)
1411                 return -ENOMEM;
1412
1413         for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++) {
1414                 machine_data->fsl_diu_info[i] =
1415                         framebuffer_alloc(sizeof(struct mfb_info), &ofdev->dev);
1416                 if (!machine_data->fsl_diu_info[i]) {
1417                         dev_err(&ofdev->dev, "cannot allocate memory\n");
1418                         ret = -ENOMEM;
1419                         goto error2;
1420                 }
1421                 mfbi = machine_data->fsl_diu_info[i]->par;
1422                 memcpy(mfbi, &mfb_template[i], sizeof(struct mfb_info));
1423                 mfbi->parent = machine_data;
1424         }
1425
1426         ret = of_address_to_resource(np, 0, &res);
1427         if (ret) {
1428                 dev_err(&ofdev->dev, "could not obtain DIU address\n");
1429                 goto error;
1430         }
1431         if (!res.start) {
1432                 dev_err(&ofdev->dev, "invalid DIU address\n");
1433                 goto error;
1434         }
1435         dev_dbg(&ofdev->dev, "%s, res.start: 0x%08x\n", __func__, res.start);
1436
1437         dr.diu_reg = ioremap(res.start, sizeof(struct diu));
1438         if (!dr.diu_reg) {
1439                 dev_err(&ofdev->dev, "Err: can't map DIU registers!\n");
1440                 ret = -EFAULT;
1441                 goto error2;
1442         }
1443
1444         out_be32(&dr.diu_reg->diu_mode, 0);             /* disable DIU anyway*/
1445
1446         /* Get the IRQ of the DIU */
1447         machine_data->irq = irq_of_parse_and_map(np, 0);
1448
1449         if (!machine_data->irq) {
1450                 dev_err(&ofdev->dev, "could not get DIU IRQ\n");
1451                 ret = -EINVAL;
1452                 goto error;
1453         }
1454         machine_data->monitor_port = monitor_port;
1455
1456         /* Area descriptor memory pool aligns to 64-bit boundary */
1457         if (allocate_buf(&pool.ad, sizeof(struct diu_ad) * FSL_AOI_NUM, 8))
1458                 return -ENOMEM;
1459
1460         /* Get memory for Gamma Table  - 32-byte aligned memory */
1461         if (allocate_buf(&pool.gamma, 768, 32)) {
1462                 ret = -ENOMEM;
1463                 goto error;
1464         }
1465
1466         /* For performance, cursor bitmap buffer aligns to 32-byte boundary */
1467         if (allocate_buf(&pool.cursor, MAX_CURS * MAX_CURS * 2, 32)) {
1468                 ret = -ENOMEM;
1469                 goto error;
1470         }
1471
1472         i = ARRAY_SIZE(machine_data->fsl_diu_info);
1473         machine_data->dummy_ad = (struct diu_ad *)
1474                         ((u32)pool.ad.vaddr + pool.ad.offset) + i;
1475         machine_data->dummy_ad->paddr = pool.ad.paddr +
1476                         i * sizeof(struct diu_ad);
1477         machine_data->dummy_aoi_virt = fsl_diu_alloc(64, &dummy_ad_addr);
1478         if (!machine_data->dummy_aoi_virt) {
1479                 ret = -ENOMEM;
1480                 goto error;
1481         }
1482         machine_data->dummy_ad->addr = cpu_to_le32(dummy_ad_addr);
1483         machine_data->dummy_ad->pix_fmt = 0x88882317;
1484         machine_data->dummy_ad->src_size_g_alpha = cpu_to_le32((4 << 12) | 4);
1485         machine_data->dummy_ad->aoi_size = cpu_to_le32((4 << 16) |  2);
1486         machine_data->dummy_ad->offset_xyi = 0;
1487         machine_data->dummy_ad->offset_xyd = 0;
1488         machine_data->dummy_ad->next_ad = 0;
1489
1490         out_be32(&dr.diu_reg->desc[0], machine_data->dummy_ad->paddr);
1491         out_be32(&dr.diu_reg->desc[1], machine_data->dummy_ad->paddr);
1492         out_be32(&dr.diu_reg->desc[2], machine_data->dummy_ad->paddr);
1493
1494         for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++) {
1495                 machine_data->fsl_diu_info[i]->fix.smem_start = 0;
1496                 mfbi = machine_data->fsl_diu_info[i]->par;
1497                 mfbi->ad = (struct diu_ad *)((u32)pool.ad.vaddr
1498                                         + pool.ad.offset) + i;
1499                 mfbi->ad->paddr = pool.ad.paddr + i * sizeof(struct diu_ad);
1500                 ret = install_fb(machine_data->fsl_diu_info[i]);
1501                 if (ret) {
1502                         dev_err(&ofdev->dev,
1503                                 "Failed to register framebuffer %d\n",
1504                                 i);
1505                         goto error;
1506                 }
1507         }
1508
1509         if (request_irq_local(machine_data->irq)) {
1510                 dev_err(machine_data->fsl_diu_info[0]->dev,
1511                         "could not request irq for diu.");
1512                 goto error;
1513         }
1514
1515         machine_data->dev_attr.attr.name = "monitor";
1516         machine_data->dev_attr.attr.mode = S_IRUGO|S_IWUSR;
1517         machine_data->dev_attr.show = show_monitor;
1518         machine_data->dev_attr.store = store_monitor;
1519         error = device_create_file(machine_data->fsl_diu_info[0]->dev,
1520                                   &machine_data->dev_attr);
1521         if (error) {
1522                 dev_err(machine_data->fsl_diu_info[0]->dev,
1523                         "could not create sysfs %s file\n",
1524                         machine_data->dev_attr.attr.name);
1525         }
1526
1527         dev_set_drvdata(&ofdev->dev, machine_data);
1528         return 0;
1529
1530 error:
1531         for (i = ARRAY_SIZE(machine_data->fsl_diu_info);
1532                 i > 0; i--)
1533                 uninstall_fb(machine_data->fsl_diu_info[i - 1]);
1534         if (pool.ad.vaddr)
1535                 free_buf(&pool.ad, sizeof(struct diu_ad) * FSL_AOI_NUM, 8);
1536         if (pool.gamma.vaddr)
1537                 free_buf(&pool.gamma, 768, 32);
1538         if (pool.cursor.vaddr)
1539                 free_buf(&pool.cursor, MAX_CURS * MAX_CURS * 2, 32);
1540         if (machine_data->dummy_aoi_virt)
1541                 fsl_diu_free(machine_data->dummy_aoi_virt, 64);
1542         iounmap(dr.diu_reg);
1543
1544 error2:
1545         for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++)
1546                 if (machine_data->fsl_diu_info[i])
1547                         framebuffer_release(machine_data->fsl_diu_info[i]);
1548         kfree(machine_data);
1549
1550         return ret;
1551 }
1552
1553
1554 static int fsl_diu_remove(struct of_device *ofdev)
1555 {
1556         struct fsl_diu_data *machine_data;
1557         int i;
1558
1559         machine_data = dev_get_drvdata(&ofdev->dev);
1560         disable_lcdc(machine_data->fsl_diu_info[0]);
1561         free_irq_local(machine_data->irq);
1562         for (i = ARRAY_SIZE(machine_data->fsl_diu_info); i > 0; i--)
1563                 uninstall_fb(machine_data->fsl_diu_info[i - 1]);
1564         if (pool.ad.vaddr)
1565                 free_buf(&pool.ad, sizeof(struct diu_ad) * FSL_AOI_NUM, 8);
1566         if (pool.gamma.vaddr)
1567                 free_buf(&pool.gamma, 768, 32);
1568         if (pool.cursor.vaddr)
1569                 free_buf(&pool.cursor, MAX_CURS * MAX_CURS * 2, 32);
1570         if (machine_data->dummy_aoi_virt)
1571                 fsl_diu_free(machine_data->dummy_aoi_virt, 64);
1572         iounmap(dr.diu_reg);
1573         for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++)
1574                 if (machine_data->fsl_diu_info[i])
1575                         framebuffer_release(machine_data->fsl_diu_info[i]);
1576         kfree(machine_data);
1577
1578         return 0;
1579 }
1580
1581 #ifndef MODULE
1582 static int __init fsl_diu_setup(char *options)
1583 {
1584         char *opt;
1585         unsigned long val;
1586
1587         if (!options || !*options)
1588                 return 0;
1589
1590         while ((opt = strsep(&options, ",")) != NULL) {
1591                 if (!*opt)
1592                         continue;
1593                 if (!strncmp(opt, "monitor=", 8)) {
1594                         if (!strict_strtoul(opt + 8, 10, &val) && (val <= 2))
1595                                 monitor_port = val;
1596                 } else if (!strncmp(opt, "bpp=", 4)) {
1597                         if (!strict_strtoul(opt + 4, 10, &val))
1598                                 default_bpp = val;
1599                 } else
1600                         fb_mode = opt;
1601         }
1602
1603         return 0;
1604 }
1605 #endif
1606
1607 static struct of_device_id fsl_diu_match[] = {
1608         {
1609                 .compatible = "fsl,diu",
1610         },
1611         {}
1612 };
1613 MODULE_DEVICE_TABLE(of, fsl_diu_match);
1614
1615 static struct of_platform_driver fsl_diu_driver = {
1616         .owner          = THIS_MODULE,
1617         .name           = "fsl_diu",
1618         .match_table    = fsl_diu_match,
1619         .probe          = fsl_diu_probe,
1620         .remove         = fsl_diu_remove,
1621         .suspend        = fsl_diu_suspend,
1622         .resume         = fsl_diu_resume,
1623 };
1624
1625 static int __init fsl_diu_init(void)
1626 {
1627 #ifdef CONFIG_NOT_COHERENT_CACHE
1628         struct device_node *np;
1629         const u32 *prop;
1630 #endif
1631         int ret;
1632 #ifndef MODULE
1633         char *option;
1634
1635         /*
1636          * For kernel boot options (in 'video=xxxfb:<options>' format)
1637          */
1638         if (fb_get_options("fslfb", &option))
1639                 return -ENODEV;
1640         fsl_diu_setup(option);
1641 #endif
1642         printk(KERN_INFO "Freescale DIU driver\n");
1643
1644 #ifdef CONFIG_NOT_COHERENT_CACHE
1645         np = of_find_node_by_type(NULL, "cpu");
1646         if (!np) {
1647                 printk(KERN_ERR "Err: can't find device node 'cpu'\n");
1648                 return -ENODEV;
1649         }
1650
1651         prop = of_get_property(np, "d-cache-size", NULL);
1652         if (prop == NULL)
1653                 return -ENODEV;
1654
1655         /* Freescale PLRU requires 13/8 times the cache size to do a proper
1656            displacement flush
1657          */
1658         coherence_data_size = *prop * 13;
1659         coherence_data_size /= 8;
1660
1661         prop = of_get_property(np, "d-cache-line-size", NULL);
1662         if (prop == NULL)
1663                 return -ENODEV;
1664         d_cache_line_size = *prop;
1665
1666         of_node_put(np);
1667         coherence_data = vmalloc(coherence_data_size);
1668         if (!coherence_data)
1669                 return -ENOMEM;
1670 #endif
1671         ret = of_register_platform_driver(&fsl_diu_driver);
1672         if (ret) {
1673                 printk(KERN_ERR
1674                         "fsl-diu: failed to register platform driver\n");
1675 #if defined(CONFIG_NOT_COHERENT_CACHE)
1676                 vfree(coherence_data);
1677 #endif
1678                 iounmap(dr.diu_reg);
1679         }
1680         return ret;
1681 }
1682
1683 static void __exit fsl_diu_exit(void)
1684 {
1685         of_unregister_platform_driver(&fsl_diu_driver);
1686 #if defined(CONFIG_NOT_COHERENT_CACHE)
1687         vfree(coherence_data);
1688 #endif
1689 }
1690
1691 module_init(fsl_diu_init);
1692 module_exit(fsl_diu_exit);
1693
1694 MODULE_AUTHOR("York Sun <yorksun@freescale.com>");
1695 MODULE_DESCRIPTION("Freescale DIU framebuffer driver");
1696 MODULE_LICENSE("GPL");
1697
1698 module_param_named(mode, fb_mode, charp, 0);
1699 MODULE_PARM_DESC(mode,
1700         "Specify resolution as \"<xres>x<yres>[-<bpp>][@<refresh>]\" ");
1701 module_param_named(bpp, default_bpp, ulong, 0);
1702 MODULE_PARM_DESC(bpp, "Specify bit-per-pixel if not specified mode");
1703 module_param_named(monitor, monitor_port, int, 0);
1704 MODULE_PARM_DESC(monitor,
1705         "Specify the monitor port (0, 1 or 2) if supported by the platform");
1706