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 #include <linux/spinlock.h>
  34
  35 #include <sysdev/fsl_soc.h>
  36 #include <linux/fsl-diu-fb.h>
  37 #include "edid.h"
  38
  39 #define FSL_AOI_NUM     6       /* 5 AOIs and one dummy AOI */
  40                                 /* 1 for plane 0, 2 for plane 1&2 each */
  41
  42 /* HW cursor parameters */
  43 #define MAX_CURS                32
  44
  45 /* INT_STATUS/INT_MASK field descriptions */
  46 #define INT_VSYNC       0x01    /* Vsync interrupt  */
  47 #define INT_VSYNC_WB    0x02    /* Vsync interrupt for write back operation */
  48 #define INT_UNDRUN      0x04    /* Under run exception interrupt */
  49 #define INT_PARERR      0x08    /* Display parameters error interrupt */
  50 #define INT_LS_BF_VS    0x10    /* Lines before vsync. interrupt */
  51
  52 struct diu_addr {
  53         void *vaddr;            /* Virtual address */
  54         dma_addr_t paddr;       /* Physical address */
  55         __u32 offset;
  56 };
  57
  58 /*
  59  * List of supported video modes
  60  *
  61  * The first entry is the default video mode.  The remain entries are in
  62  * order if increasing resolution and frequency.  The 320x240-60 mode is
  63  * the initial AOI for the second and third planes.
  64  */
  65 static struct fb_videomode __devinitdata fsl_diu_mode_db[] = {
  66         {
  67                 .refresh        = 60,
  68                 .xres           = 1024,
  69                 .yres           = 768,
  70                 .pixclock       = 15385,
  71                 .left_margin    = 160,
  72                 .right_margin   = 24,
  73                 .upper_margin   = 29,
  74                 .lower_margin   = 3,
  75                 .hsync_len      = 136,
  76                 .vsync_len      = 6,
  77                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  78                 .vmode          = FB_VMODE_NONINTERLACED
  79         },
  80         {
  81                 .refresh        = 60,
  82                 .xres           = 320,
  83                 .yres           = 240,
  84                 .pixclock       = 79440,
  85                 .left_margin    = 16,
  86                 .right_margin   = 16,
  87                 .upper_margin   = 16,
  88                 .lower_margin   = 5,
  89                 .hsync_len      = 48,
  90                 .vsync_len      = 1,
  91                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  92                 .vmode          = FB_VMODE_NONINTERLACED
  93         },
  94         {
  95                 .refresh        = 60,
  96                 .xres           = 640,
  97                 .yres           = 480,
  98                 .pixclock       = 39722,
  99                 .left_margin    = 48,
 100                 .right_margin   = 16,
 101                 .upper_margin   = 33,
 102                 .lower_margin   = 10,
 103                 .hsync_len      = 96,
 104                 .vsync_len      = 2,
 105                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 106                 .vmode          = FB_VMODE_NONINTERLACED
 107         },
 108         {
 109                 .refresh        = 72,
 110                 .xres           = 640,
 111                 .yres           = 480,
 112                 .pixclock       = 32052,
 113                 .left_margin    = 128,
 114                 .right_margin   = 24,
 115                 .upper_margin   = 28,
 116                 .lower_margin   = 9,
 117                 .hsync_len      = 40,
 118                 .vsync_len      = 3,
 119                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 120                 .vmode          = FB_VMODE_NONINTERLACED
 121         },
 122         {
 123                 .refresh        = 75,
 124                 .xres           = 640,
 125                 .yres           = 480,
 126                 .pixclock       = 31747,
 127                 .left_margin    = 120,
 128                 .right_margin   = 16,
 129                 .upper_margin   = 16,
 130                 .lower_margin   = 1,
 131                 .hsync_len      = 64,
 132                 .vsync_len      = 3,
 133                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 134                 .vmode          = FB_VMODE_NONINTERLACED
 135         },
 136         {
 137                 .refresh        = 90,
 138                 .xres           = 640,
 139                 .yres           = 480,
 140                 .pixclock       = 25057,
 141                 .left_margin    = 120,
 142                 .right_margin   = 32,
 143                 .upper_margin   = 14,
 144                 .lower_margin   = 25,
 145                 .hsync_len      = 40,
 146                 .vsync_len      = 14,
 147                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 148                 .vmode          = FB_VMODE_NONINTERLACED
 149         },
 150         {
 151                 .refresh        = 100,
 152                 .xres           = 640,
 153                 .yres           = 480,
 154                 .pixclock       = 22272,
 155                 .left_margin    = 48,
 156                 .right_margin   = 32,
 157                 .upper_margin   = 17,
 158                 .lower_margin   = 22,
 159                 .hsync_len      = 128,
 160                 .vsync_len      = 12,
 161                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 162                 .vmode          = FB_VMODE_NONINTERLACED
 163         },
 164         {
 165                 .refresh        = 60,
 166                 .xres           = 800,
 167                 .yres           = 480,
 168                 .pixclock       = 33805,
 169                 .left_margin    = 96,
 170                 .right_margin   = 24,
 171                 .upper_margin   = 10,
 172                 .lower_margin   = 3,
 173                 .hsync_len      = 72,
 174                 .vsync_len      = 7,
 175                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 176                 .vmode          = FB_VMODE_NONINTERLACED
 177         },
 178         {
 179                 .refresh        = 60,
 180                 .xres           = 800,
 181                 .yres           = 600,
 182                 .pixclock       = 25000,
 183                 .left_margin    = 88,
 184                 .right_margin   = 40,
 185                 .upper_margin   = 23,
 186                 .lower_margin   = 1,
 187                 .hsync_len      = 128,
 188                 .vsync_len      = 4,
 189                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 190                 .vmode          = FB_VMODE_NONINTERLACED
 191         },
 192         {
 193                 .refresh        = 60,
 194                 .xres           = 854,
 195                 .yres           = 480,
 196                 .pixclock       = 31518,
 197                 .left_margin    = 104,
 198                 .right_margin   = 16,
 199                 .upper_margin   = 13,
 200                 .lower_margin   = 1,
 201                 .hsync_len      = 88,
 202                 .vsync_len      = 3,
 203                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 204                 .vmode          = FB_VMODE_NONINTERLACED
 205         },
 206         {
 207                 .refresh        = 70,
 208                 .xres           = 1024,
 209                 .yres           = 768,
 210                 .pixclock       = 16886,
 211                 .left_margin    = 3,
 212                 .right_margin   = 3,
 213                 .upper_margin   = 2,
 214                 .lower_margin   = 2,
 215                 .hsync_len      = 40,
 216                 .vsync_len      = 18,
 217                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 218                 .vmode          = FB_VMODE_NONINTERLACED
 219         },
 220         {
 221                 .refresh        = 75,
 222                 .xres           = 1024,
 223                 .yres           = 768,
 224                 .pixclock       = 15009,
 225                 .left_margin    = 3,
 226                 .right_margin   = 3,
 227                 .upper_margin   = 2,
 228                 .lower_margin   = 2,
 229                 .hsync_len      = 80,
 230                 .vsync_len      = 32,
 231                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 232                 .vmode          = FB_VMODE_NONINTERLACED
 233         },
 234         {
 235                 .refresh        = 60,
 236                 .xres           = 1280,
 237                 .yres           = 480,
 238                 .pixclock       = 18939,
 239                 .left_margin    = 353,
 240                 .right_margin   = 47,
 241                 .upper_margin   = 39,
 242                 .lower_margin   = 4,
 243                 .hsync_len      = 8,
 244                 .vsync_len      = 2,
 245                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 246                 .vmode          = FB_VMODE_NONINTERLACED
 247         },
 248         {
 249                 .refresh        = 60,
 250                 .xres           = 1280,
 251                 .yres           = 720,
 252                 .pixclock       = 13426,
 253                 .left_margin    = 192,
 254                 .right_margin   = 64,
 255                 .upper_margin   = 22,
 256                 .lower_margin   = 1,
 257                 .hsync_len      = 136,
 258                 .vsync_len      = 3,
 259                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 260                 .vmode          = FB_VMODE_NONINTERLACED
 261         },
 262         {
 263                 .refresh        = 60,
 264                 .xres           = 1280,
 265                 .yres           = 1024,
 266                 .pixclock       = 9375,
 267                 .left_margin    = 38,
 268                 .right_margin   = 128,
 269                 .upper_margin   = 2,
 270                 .lower_margin   = 7,
 271                 .hsync_len      = 216,
 272                 .vsync_len      = 37,
 273                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 274                 .vmode          = FB_VMODE_NONINTERLACED
 275         },
 276         {
 277                 .refresh        = 70,
 278                 .xres           = 1280,
 279                 .yres           = 1024,
 280                 .pixclock       = 9380,
 281                 .left_margin    = 6,
 282                 .right_margin   = 6,
 283                 .upper_margin   = 4,
 284                 .lower_margin   = 4,
 285                 .hsync_len      = 60,
 286                 .vsync_len      = 94,
 287                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 288                 .vmode          = FB_VMODE_NONINTERLACED
 289         },
 290         {
 291                 .refresh        = 75,
 292                 .xres           = 1280,
 293                 .yres           = 1024,
 294                 .pixclock       = 9380,
 295                 .left_margin    = 6,
 296                 .right_margin   = 6,
 297                 .upper_margin   = 4,
 298                 .lower_margin   = 4,
 299                 .hsync_len      = 60,
 300                 .vsync_len      = 15,
 301                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 302                 .vmode          = FB_VMODE_NONINTERLACED
 303         },
 304         {
 305                 .refresh        = 60,
 306                 .xres           = 1920,
 307                 .yres           = 1080,
 308                 .pixclock       = 5787,
 309                 .left_margin    = 328,
 310                 .right_margin   = 120,
 311                 .upper_margin   = 34,
 312                 .lower_margin   = 1,
 313                 .hsync_len      = 208,
 314                 .vsync_len      = 3,
 315                 .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 316                 .vmode          = FB_VMODE_NONINTERLACED
 317         },
 318 };
 319
 320 static char *fb_mode;
 321 static unsigned long default_bpp = 32;
 322 static enum fsl_diu_monitor_port monitor_port;
 323 static char *monitor_string;
 324
 325 #if defined(CONFIG_NOT_COHERENT_CACHE)
 326 static u8 *coherence_data;
 327 static size_t coherence_data_size;
 328 static unsigned int d_cache_line_size;
 329 #endif
 330
 331 static DEFINE_SPINLOCK(diu_lock);
 332
 333 struct fsl_diu_data {
 334         struct fb_info *fsl_diu_info[FSL_AOI_NUM - 1];
 335                                 /*FSL_AOI_NUM has one dummy AOI */
 336         struct device_attribute dev_attr;
 337         struct diu_ad *dummy_ad;
 338         void *dummy_aoi_virt;
 339         unsigned int irq;
 340         int fb_enabled;
 341         enum fsl_diu_monitor_port monitor_port;
 342         struct diu __iomem *diu_reg;
 343         spinlock_t reg_lock;
 344         struct diu_addr ad;
 345         struct diu_addr gamma;
 346         struct diu_addr pallete;
 347         struct diu_addr cursor;
 348 };
 349
 350 enum mfb_index {
 351         PLANE0 = 0,     /* Plane 0, only one AOI that fills the screen */
 352         PLANE1_AOI0,    /* Plane 1, first AOI */
 353         PLANE1_AOI1,    /* Plane 1, second AOI */
 354         PLANE2_AOI0,    /* Plane 2, first AOI */
 355         PLANE2_AOI1,    /* Plane 2, second AOI */
 356 };
 357
 358 struct mfb_info {
 359         enum mfb_index index;
 360         char *id;
 361         int registered;
 362         unsigned long pseudo_palette[16];
 363         struct diu_ad *ad;
 364         int cursor_reset;
 365         unsigned char g_alpha;
 366         unsigned int count;
 367         int x_aoi_d;            /* aoi display x offset to physical screen */
 368         int y_aoi_d;            /* aoi display y offset to physical screen */
 369         struct fsl_diu_data *parent;
 370         u8 *edid_data;
 371 };
 372
 373
 374 static struct mfb_info mfb_template[] = {
 375         {
 376                 .index = PLANE0,
 377                 .id = "Panel0",
 378                 .registered = 0,
 379                 .count = 0,
 380                 .x_aoi_d = 0,
 381                 .y_aoi_d = 0,
 382         },
 383         {
 384                 .index = PLANE1_AOI0,
 385                 .id = "Panel1 AOI0",
 386                 .registered = 0,
 387                 .g_alpha = 0xff,
 388                 .count = 0,
 389                 .x_aoi_d = 0,
 390                 .y_aoi_d = 0,
 391         },
 392         {
 393                 .index = PLANE1_AOI1,
 394                 .id = "Panel1 AOI1",
 395                 .registered = 0,
 396                 .g_alpha = 0xff,
 397                 .count = 0,
 398                 .x_aoi_d = 0,
 399                 .y_aoi_d = 480,
 400         },
 401         {
 402                 .index = PLANE2_AOI0,
 403                 .id = "Panel2 AOI0",
 404                 .registered = 0,
 405                 .g_alpha = 0xff,
 406                 .count = 0,
 407                 .x_aoi_d = 640,
 408                 .y_aoi_d = 0,
 409         },
 410         {
 411                 .index = PLANE2_AOI1,
 412                 .id = "Panel2 AOI1",
 413                 .registered = 0,
 414                 .g_alpha = 0xff,
 415                 .count = 0,
 416                 .x_aoi_d = 640,
 417                 .y_aoi_d = 480,
 418         },
 419 };
 420
 421 /**
 422  * fsl_diu_name_to_port - convert a port name to a monitor port enum
 423  *
 424  * Takes the name of a monitor port ("dvi", "lvds", or "dlvds") and returns
 425  * the enum fsl_diu_monitor_port that corresponds to that string.
 426  *
 427  * For compatibility with older versions, a number ("0", "1", or "2") is also
 428  * supported.
 429  *
 430  * If the string is unknown, DVI is assumed.
 431  *
 432  * If the particular port is not supported by the platform, another port
 433  * (platform-specific) is chosen instead.
 434  */
 435 static enum fsl_diu_monitor_port fsl_diu_name_to_port(const char *s)
 436 {
 437         enum fsl_diu_monitor_port port = FSL_DIU_PORT_DVI;
 438         unsigned long val;
 439
 440         if (s) {
 441                 if (!strict_strtoul(s, 10, &val) && (val <= 2))
 442                         port = (enum fsl_diu_monitor_port) val;
 443                 else if (strncmp(s, "lvds", 4) == 0)
 444                         port = FSL_DIU_PORT_LVDS;
 445                 else if (strncmp(s, "dlvds", 5) == 0)
 446                         port = FSL_DIU_PORT_DLVDS;
 447         }
 448
 449         if (diu_ops.valid_monitor_port)
 450                 port = diu_ops.valid_monitor_port(port);
 451
 452         return port;
 453 }
 454
 455 /**
 456  * fsl_diu_alloc - allocate memory for the DIU
 457  * @size: number of bytes to allocate
 458  * @param: returned physical address of memory
 459  *
 460  * This function allocates a physically-contiguous block of memory.
 461  */
 462 static void *fsl_diu_alloc(size_t size, phys_addr_t *phys)
 463 {
 464         void *virt;
 465
 466         virt = alloc_pages_exact(size, GFP_DMA | __GFP_ZERO);
 467         if (virt)
 468                 *phys = virt_to_phys(virt);
 469
 470         return virt;
 471 }
 472
 473 /**
 474  * fsl_diu_free - release DIU memory
 475  * @virt: pointer returned by fsl_diu_alloc()
 476  * @size: number of bytes allocated by fsl_diu_alloc()
 477  *
 478  * This function releases memory allocated by fsl_diu_alloc().
 479  */
 480 static void fsl_diu_free(void *virt, size_t size)
 481 {
 482         if (virt && size)
 483                 free_pages_exact(virt, size);
 484 }
 485
 486 /*
 487  * Workaround for failed writing desc register of planes.
 488  * Needed with MPC5121 DIU rev 2.0 silicon.
 489  */
 490 void wr_reg_wa(u32 *reg, u32 val)
 491 {
 492         do {
 493                 out_be32(reg, val);
 494         } while (in_be32(reg) != val);
 495 }
 496
 497 static void fsl_diu_enable_panel(struct fb_info *info)
 498 {
 499         struct mfb_info *pmfbi, *cmfbi, *mfbi = info->par;
 500         struct diu_ad *ad = mfbi->ad;
 501         struct fsl_diu_data *machine_data = mfbi->parent;
 502         struct diu __iomem *hw = machine_data->diu_reg;
 503
 504         switch (mfbi->index) {
 505         case PLANE0:
 506                 if (hw->desc[0] != ad->paddr)
 507                         wr_reg_wa(&hw->desc[0], ad->paddr);
 508                 break;
 509         case PLANE1_AOI0:
 510                 cmfbi = machine_data->fsl_diu_info[2]->par;
 511                 if (hw->desc[1] != ad->paddr) { /* AOI0 closed */
 512                         if (cmfbi->count > 0)   /* AOI1 open */
 513                                 ad->next_ad =
 514                                         cpu_to_le32(cmfbi->ad->paddr);
 515                         else
 516                                 ad->next_ad = 0;
 517                         wr_reg_wa(&hw->desc[1], ad->paddr);
 518                 }
 519                 break;
 520         case PLANE2_AOI0:
 521                 cmfbi = machine_data->fsl_diu_info[4]->par;
 522                 if (hw->desc[2] != ad->paddr) { /* AOI0 closed */
 523                         if (cmfbi->count > 0)   /* AOI1 open */
 524                                 ad->next_ad =
 525                                         cpu_to_le32(cmfbi->ad->paddr);
 526                         else
 527                                 ad->next_ad = 0;
 528                         wr_reg_wa(&hw->desc[2], ad->paddr);
 529                 }
 530                 break;
 531         case PLANE1_AOI1:
 532                 pmfbi = machine_data->fsl_diu_info[1]->par;
 533                 ad->next_ad = 0;
 534                 if (hw->desc[1] == machine_data->dummy_ad->paddr)
 535                         wr_reg_wa(&hw->desc[1], ad->paddr);
 536                 else                                    /* AOI0 open */
 537                         pmfbi->ad->next_ad = cpu_to_le32(ad->paddr);
 538                 break;
 539         case PLANE2_AOI1:
 540                 pmfbi = machine_data->fsl_diu_info[3]->par;
 541                 ad->next_ad = 0;
 542                 if (hw->desc[2] == machine_data->dummy_ad->paddr)
 543                         wr_reg_wa(&hw->desc[2], ad->paddr);
 544                 else                            /* AOI0 was open */
 545                         pmfbi->ad->next_ad = cpu_to_le32(ad->paddr);
 546                 break;
 547         }
 548 }
 549
 550 static void fsl_diu_disable_panel(struct fb_info *info)
 551 {
 552         struct mfb_info *pmfbi, *cmfbi, *mfbi = info->par;
 553         struct diu_ad *ad = mfbi->ad;
 554         struct fsl_diu_data *machine_data = mfbi->parent;
 555         struct diu __iomem *hw = machine_data->diu_reg;
 556
 557         switch (mfbi->index) {
 558         case PLANE0:
 559                 if (hw->desc[0] != machine_data->dummy_ad->paddr)
 560                         wr_reg_wa(&hw->desc[0], machine_data->dummy_ad->paddr);
 561                 break;
 562         case PLANE1_AOI0:
 563                 cmfbi = machine_data->fsl_diu_info[2]->par;
 564                 if (cmfbi->count > 0)   /* AOI1 is open */
 565                         wr_reg_wa(&hw->desc[1], cmfbi->ad->paddr);
 566                                         /* move AOI1 to the first */
 567                 else                    /* AOI1 was closed */
 568                         wr_reg_wa(&hw->desc[1], machine_data->dummy_ad->paddr);
 569                                         /* close AOI 0 */
 570                 break;
 571         case PLANE2_AOI0:
 572                 cmfbi = machine_data->fsl_diu_info[4]->par;
 573                 if (cmfbi->count > 0)   /* AOI1 is open */
 574                         wr_reg_wa(&hw->desc[2], cmfbi->ad->paddr);
 575                                         /* move AOI1 to the first */
 576                 else                    /* AOI1 was closed */
 577                         wr_reg_wa(&hw->desc[2], machine_data->dummy_ad->paddr);
 578                                         /* close AOI 0 */
 579                 break;
 580         case PLANE1_AOI1:
 581                 pmfbi = machine_data->fsl_diu_info[1]->par;
 582                 if (hw->desc[1] != ad->paddr) {
 583                                 /* AOI1 is not the first in the chain */
 584                         if (pmfbi->count > 0)
 585                                         /* AOI0 is open, must be the first */
 586                                 pmfbi->ad->next_ad = 0;
 587                 } else                  /* AOI1 is the first in the chain */
 588                         wr_reg_wa(&hw->desc[1], machine_data->dummy_ad->paddr);
 589                                         /* close AOI 1 */
 590                 break;
 591         case PLANE2_AOI1:
 592                 pmfbi = machine_data->fsl_diu_info[3]->par;
 593                 if (hw->desc[2] != ad->paddr) {
 594                                 /* AOI1 is not the first in the chain */
 595                         if (pmfbi->count > 0)
 596                                 /* AOI0 is open, must be the first */
 597                                 pmfbi->ad->next_ad = 0;
 598                 } else          /* AOI1 is the first in the chain */
 599                         wr_reg_wa(&hw->desc[2], machine_data->dummy_ad->paddr);
 600                                 /* close AOI 1 */
 601                 break;
 602         }
 603 }
 604
 605 static void enable_lcdc(struct fb_info *info)
 606 {
 607         struct mfb_info *mfbi = info->par;
 608         struct fsl_diu_data *machine_data = mfbi->parent;
 609         struct diu __iomem *hw = machine_data->diu_reg;
 610
 611         if (!machine_data->fb_enabled) {
 612                 out_be32(&hw->diu_mode, MFB_MODE1);
 613                 machine_data->fb_enabled++;
 614         }
 615 }
 616
 617 static void disable_lcdc(struct fb_info *info)
 618 {
 619         struct mfb_info *mfbi = info->par;
 620         struct fsl_diu_data *machine_data = mfbi->parent;
 621         struct diu __iomem *hw = machine_data->diu_reg;
 622
 623         if (machine_data->fb_enabled) {
 624                 out_be32(&hw->diu_mode, 0);
 625                 machine_data->fb_enabled = 0;
 626         }
 627 }
 628
 629 static void adjust_aoi_size_position(struct fb_var_screeninfo *var,
 630                                 struct fb_info *info)
 631 {
 632         struct mfb_info *lower_aoi_mfbi, *upper_aoi_mfbi, *mfbi = info->par;
 633         struct fsl_diu_data *machine_data = mfbi->parent;
 634         int available_height, upper_aoi_bottom;
 635         enum mfb_index index = mfbi->index;
 636         int lower_aoi_is_open, upper_aoi_is_open;
 637         __u32 base_plane_width, base_plane_height, upper_aoi_height;
 638
 639         base_plane_width = machine_data->fsl_diu_info[0]->var.xres;
 640         base_plane_height = machine_data->fsl_diu_info[0]->var.yres;
 641
 642         if (mfbi->x_aoi_d < 0)
 643                 mfbi->x_aoi_d = 0;
 644         if (mfbi->y_aoi_d < 0)
 645                 mfbi->y_aoi_d = 0;
 646         switch (index) {
 647         case PLANE0:
 648                 if (mfbi->x_aoi_d != 0)
 649                         mfbi->x_aoi_d = 0;
 650                 if (mfbi->y_aoi_d != 0)
 651                         mfbi->y_aoi_d = 0;
 652                 break;
 653         case PLANE1_AOI0:
 654         case PLANE2_AOI0:
 655                 lower_aoi_mfbi = machine_data->fsl_diu_info[index+1]->par;
 656                 lower_aoi_is_open = lower_aoi_mfbi->count > 0 ? 1 : 0;
 657                 if (var->xres > base_plane_width)
 658                         var->xres = base_plane_width;
 659                 if ((mfbi->x_aoi_d + var->xres) > base_plane_width)
 660                         mfbi->x_aoi_d = base_plane_width - var->xres;
 661
 662                 if (lower_aoi_is_open)
 663                         available_height = lower_aoi_mfbi->y_aoi_d;
 664                 else
 665                         available_height = base_plane_height;
 666                 if (var->yres > available_height)
 667                         var->yres = available_height;
 668                 if ((mfbi->y_aoi_d + var->yres) > available_height)
 669                         mfbi->y_aoi_d = available_height - var->yres;
 670                 break;
 671         case PLANE1_AOI1:
 672         case PLANE2_AOI1:
 673                 upper_aoi_mfbi = machine_data->fsl_diu_info[index-1]->par;
 674                 upper_aoi_height =
 675                                 machine_data->fsl_diu_info[index-1]->var.yres;
 676                 upper_aoi_bottom = upper_aoi_mfbi->y_aoi_d + upper_aoi_height;
 677                 upper_aoi_is_open = upper_aoi_mfbi->count > 0 ? 1 : 0;
 678                 if (var->xres > base_plane_width)
 679                         var->xres = base_plane_width;
 680                 if ((mfbi->x_aoi_d + var->xres) > base_plane_width)
 681                         mfbi->x_aoi_d = base_plane_width - var->xres;
 682                 if (mfbi->y_aoi_d < 0)
 683                         mfbi->y_aoi_d = 0;
 684                 if (upper_aoi_is_open) {
 685                         if (mfbi->y_aoi_d < upper_aoi_bottom)
 686                                 mfbi->y_aoi_d = upper_aoi_bottom;
 687                         available_height = base_plane_height
 688                                                 - upper_aoi_bottom;
 689                 } else
 690                         available_height = base_plane_height;
 691                 if (var->yres > available_height)
 692                         var->yres = available_height;
 693                 if ((mfbi->y_aoi_d + var->yres) > base_plane_height)
 694                         mfbi->y_aoi_d = base_plane_height - var->yres;
 695                 break;
 696         }
 697 }
 698 /*
 699  * Checks to see if the hardware supports the state requested by var passed
 700  * in. This function does not alter the hardware state! If the var passed in
 701  * is slightly off by what the hardware can support then we alter the var
 702  * PASSED in to what we can do. If the hardware doesn't support mode change
 703  * a -EINVAL will be returned by the upper layers.
 704  */
 705 static int fsl_diu_check_var(struct fb_var_screeninfo *var,
 706                                 struct fb_info *info)
 707 {
 708         if (var->xres_virtual < var->xres)
 709                 var->xres_virtual = var->xres;
 710         if (var->yres_virtual < var->yres)
 711                 var->yres_virtual = var->yres;
 712
 713         if (var->xoffset < 0)
 714                 var->xoffset = 0;
 715
 716         if (var->yoffset < 0)
 717                 var->yoffset = 0;
 718
 719         if (var->xoffset + info->var.xres > info->var.xres_virtual)
 720                 var->xoffset = info->var.xres_virtual - info->var.xres;
 721
 722         if (var->yoffset + info->var.yres > info->var.yres_virtual)
 723                 var->yoffset = info->var.yres_virtual - info->var.yres;
 724
 725         if ((var->bits_per_pixel != 32) && (var->bits_per_pixel != 24) &&
 726             (var->bits_per_pixel != 16))
 727                 var->bits_per_pixel = default_bpp;
 728
 729         switch (var->bits_per_pixel) {
 730         case 16:
 731                 var->red.length = 5;
 732                 var->red.offset = 11;
 733                 var->red.msb_right = 0;
 734
 735                 var->green.length = 6;
 736                 var->green.offset = 5;
 737                 var->green.msb_right = 0;
 738
 739                 var->blue.length = 5;
 740                 var->blue.offset = 0;
 741                 var->blue.msb_right = 0;
 742
 743                 var->transp.length = 0;
 744                 var->transp.offset = 0;
 745                 var->transp.msb_right = 0;
 746                 break;
 747         case 24:
 748                 var->red.length = 8;
 749                 var->red.offset = 0;
 750                 var->red.msb_right = 0;
 751
 752                 var->green.length = 8;
 753                 var->green.offset = 8;
 754                 var->green.msb_right = 0;
 755
 756                 var->blue.length = 8;
 757                 var->blue.offset = 16;
 758                 var->blue.msb_right = 0;
 759
 760                 var->transp.length = 0;
 761                 var->transp.offset = 0;
 762                 var->transp.msb_right = 0;
 763                 break;
 764         case 32:
 765                 var->red.length = 8;
 766                 var->red.offset = 16;
 767                 var->red.msb_right = 0;
 768
 769                 var->green.length = 8;
 770                 var->green.offset = 8;
 771                 var->green.msb_right = 0;
 772
 773                 var->blue.length = 8;
 774                 var->blue.offset = 0;
 775                 var->blue.msb_right = 0;
 776
 777                 var->transp.length = 8;
 778                 var->transp.offset = 24;
 779                 var->transp.msb_right = 0;
 780
 781                 break;
 782         }
 783
 784         var->height = -1;
 785         var->width = -1;
 786         var->grayscale = 0;
 787
 788         /* Copy nonstd field to/from sync for fbset usage */
 789         var->sync |= var->nonstd;
 790         var->nonstd |= var->sync;
 791
 792         adjust_aoi_size_position(var, info);
 793         return 0;
 794 }
 795
 796 static void set_fix(struct fb_info *info)
 797 {
 798         struct fb_fix_screeninfo *fix = &info->fix;
 799         struct fb_var_screeninfo *var = &info->var;
 800         struct mfb_info *mfbi = info->par;
 801
 802         strncpy(fix->id, mfbi->id, sizeof(fix->id));
 803         fix->line_length = var->xres_virtual * var->bits_per_pixel / 8;
 804         fix->type = FB_TYPE_PACKED_PIXELS;
 805         fix->accel = FB_ACCEL_NONE;
 806         fix->visual = FB_VISUAL_TRUECOLOR;
 807         fix->xpanstep = 1;
 808         fix->ypanstep = 1;
 809 }
 810
 811 static void update_lcdc(struct fb_info *info)
 812 {
 813         struct fb_var_screeninfo *var = &info->var;
 814         struct mfb_info *mfbi = info->par;
 815         struct fsl_diu_data *machine_data = mfbi->parent;
 816         struct diu __iomem *hw;
 817         int i, j;
 818         char __iomem *cursor_base, *gamma_table_base;
 819
 820         u32 temp;
 821
 822         hw = machine_data->diu_reg;
 823
 824         diu_ops.set_monitor_port(machine_data->monitor_port);
 825         gamma_table_base = machine_data->gamma.vaddr;
 826         cursor_base = machine_data->cursor.vaddr;
 827         /* Prep for DIU init  - gamma table, cursor table */
 828
 829         for (i = 0; i <= 2; i++)
 830                 for (j = 0; j <= 255; j++)
 831                         *gamma_table_base++ = j;
 832
 833         diu_ops.set_gamma_table(machine_data->monitor_port,
 834                                 machine_data->gamma.vaddr);
 835
 836         disable_lcdc(info);
 837
 838         /* Program DIU registers */
 839
 840         out_be32(&hw->gamma, machine_data->gamma.paddr);
 841         out_be32(&hw->cursor, machine_data->cursor.paddr);
 842
 843         out_be32(&hw->bgnd, 0x007F7F7F);        /* BGND */
 844         out_be32(&hw->bgnd_wb, 0);              /* BGND_WB */
 845         out_be32(&hw->disp_size, (var->yres << 16 | var->xres));
 846                                                 /* DISP SIZE */
 847         out_be32(&hw->wb_size, 0); /* WB SIZE */
 848         out_be32(&hw->wb_mem_addr, 0); /* WB MEM ADDR */
 849
 850         /* Horizontal and vertical configuration register */
 851         temp = var->left_margin << 22 | /* BP_H */
 852                var->hsync_len << 11 |   /* PW_H */
 853                var->right_margin;       /* FP_H */
 854
 855         out_be32(&hw->hsyn_para, temp);
 856
 857         temp = var->upper_margin << 22 | /* BP_V */
 858                var->vsync_len << 11 |    /* PW_V  */
 859                var->lower_margin;        /* FP_V  */
 860
 861         out_be32(&hw->vsyn_para, temp);
 862
 863         diu_ops.set_pixel_clock(var->pixclock);
 864
 865         out_be32(&hw->syn_pol, 0);      /* SYNC SIGNALS POLARITY */
 866         out_be32(&hw->thresholds, 0x00037800); /* The Thresholds */
 867         out_be32(&hw->int_status, 0);   /* INTERRUPT STATUS */
 868         out_be32(&hw->plut, 0x01F5F666);
 869
 870         /* Enable the DIU */
 871         enable_lcdc(info);
 872 }
 873
 874 static int map_video_memory(struct fb_info *info)
 875 {
 876         phys_addr_t phys;
 877         u32 smem_len = info->fix.line_length * info->var.yres_virtual;
 878
 879         info->screen_base = fsl_diu_alloc(smem_len, &phys);
 880         if (info->screen_base == NULL) {
 881                 dev_err(info->dev, "unable to allocate fb memory\n");
 882                 return -ENOMEM;
 883         }
 884         mutex_lock(&info->mm_lock);
 885         info->fix.smem_start = (unsigned long) phys;
 886         info->fix.smem_len = smem_len;
 887         mutex_unlock(&info->mm_lock);
 888         info->screen_size = info->fix.smem_len;
 889
 890         return 0;
 891 }
 892
 893 static void unmap_video_memory(struct fb_info *info)
 894 {
 895         fsl_diu_free(info->screen_base, info->fix.smem_len);
 896         mutex_lock(&info->mm_lock);
 897         info->screen_base = NULL;
 898         info->fix.smem_start = 0;
 899         info->fix.smem_len = 0;
 900         mutex_unlock(&info->mm_lock);
 901 }
 902
 903 /*
 904  * Using the fb_var_screeninfo in fb_info we set the aoi of this
 905  * particular framebuffer. It is a light version of fsl_diu_set_par.
 906  */
 907 static int fsl_diu_set_aoi(struct fb_info *info)
 908 {
 909         struct fb_var_screeninfo *var = &info->var;
 910         struct mfb_info *mfbi = info->par;
 911         struct diu_ad *ad = mfbi->ad;
 912
 913         /* AOI should not be greater than display size */
 914         ad->offset_xyi = cpu_to_le32((var->yoffset << 16) | var->xoffset);
 915         ad->offset_xyd = cpu_to_le32((mfbi->y_aoi_d << 16) | mfbi->x_aoi_d);
 916         return 0;
 917 }
 918
 919 /*
 920  * Using the fb_var_screeninfo in fb_info we set the resolution of this
 921  * particular framebuffer. This function alters the fb_fix_screeninfo stored
 922  * in fb_info. It does not alter var in fb_info since we are using that
 923  * data. This means we depend on the data in var inside fb_info to be
 924  * supported by the hardware. fsl_diu_check_var is always called before
 925  * fsl_diu_set_par to ensure this.
 926  */
 927 static int fsl_diu_set_par(struct fb_info *info)
 928 {
 929         unsigned long len;
 930         struct fb_var_screeninfo *var = &info->var;
 931         struct mfb_info *mfbi = info->par;
 932         struct fsl_diu_data *machine_data = mfbi->parent;
 933         struct diu_ad *ad = mfbi->ad;
 934         struct diu __iomem *hw;
 935
 936         hw = machine_data->diu_reg;
 937
 938         set_fix(info);
 939         mfbi->cursor_reset = 1;
 940
 941         len = info->var.yres_virtual * info->fix.line_length;
 942         /* Alloc & dealloc each time resolution/bpp change */
 943         if (len != info->fix.smem_len) {
 944                 if (info->fix.smem_start)
 945                         unmap_video_memory(info);
 946
 947                 /* Memory allocation for framebuffer */
 948                 if (map_video_memory(info)) {
 949                         dev_err(info->dev, "unable to allocate fb memory 1\n");
 950                         return -ENOMEM;
 951                 }
 952         }
 953
 954         ad->pix_fmt = diu_ops.get_pixel_format(machine_data->monitor_port,
 955                                                var->bits_per_pixel);
 956         ad->addr    = cpu_to_le32(info->fix.smem_start);
 957         ad->src_size_g_alpha = cpu_to_le32((var->yres_virtual << 12) |
 958                                 var->xres_virtual) | mfbi->g_alpha;
 959         /* AOI should not be greater than display size */
 960         ad->aoi_size    = cpu_to_le32((var->yres << 16) | var->xres);
 961         ad->offset_xyi = cpu_to_le32((var->yoffset << 16) | var->xoffset);
 962         ad->offset_xyd = cpu_to_le32((mfbi->y_aoi_d << 16) | mfbi->x_aoi_d);
 963
 964         /* Disable chroma keying function */
 965         ad->ckmax_r = 0;
 966         ad->ckmax_g = 0;
 967         ad->ckmax_b = 0;
 968
 969         ad->ckmin_r = 255;
 970         ad->ckmin_g = 255;
 971         ad->ckmin_b = 255;
 972
 973         if (mfbi->index == PLANE0)
 974                 update_lcdc(info);
 975         return 0;
 976 }
 977
 978 static inline __u32 CNVT_TOHW(__u32 val, __u32 width)
 979 {
 980         return ((val << width) + 0x7FFF - val) >> 16;
 981 }
 982
 983 /*
 984  * Set a single color register. The values supplied have a 16 bit magnitude
 985  * which needs to be scaled in this function for the hardware. Things to take
 986  * into consideration are how many color registers, if any, are supported with
 987  * the current color visual. With truecolor mode no color palettes are
 988  * supported. Here a pseudo palette is created which we store the value in
 989  * pseudo_palette in struct fb_info. For pseudocolor mode we have a limited
 990  * color palette.
 991  */
 992 static int fsl_diu_setcolreg(unsigned int regno, unsigned int red,
 993                              unsigned int green, unsigned int blue,
 994                              unsigned int transp, struct fb_info *info)
 995 {
 996         int ret = 1;
 997
 998         /*
 999          * If greyscale is true, then we convert the RGB value
1000          * to greyscale no matter what visual we are using.
1001          */
1002         if (info->var.grayscale)
1003                 red = green = blue = (19595 * red + 38470 * green +
1004                                       7471 * blue) >> 16;
1005         switch (info->fix.visual) {
1006         case FB_VISUAL_TRUECOLOR:
1007                 /*
1008                  * 16-bit True Colour.  We encode the RGB value
1009                  * according to the RGB bitfield information.
1010                  */
1011                 if (regno < 16) {
1012                         u32 *pal = info->pseudo_palette;
1013                         u32 v;
1014
1015                         red = CNVT_TOHW(red, info->var.red.length);
1016                         green = CNVT_TOHW(green, info->var.green.length);
1017                         blue = CNVT_TOHW(blue, info->var.blue.length);
1018                         transp = CNVT_TOHW(transp, info->var.transp.length);
1019
1020                         v = (red << info->var.red.offset) |
1021                             (green << info->var.green.offset) |
1022                             (blue << info->var.blue.offset) |
1023                             (transp << info->var.transp.offset);
1024
1025                         pal[regno] = v;
1026                         ret = 0;
1027                 }
1028                 break;
1029         }
1030
1031         return ret;
1032 }
1033
1034 /*
1035  * Pan (or wrap, depending on the `vmode' field) the display using the
1036  * 'xoffset' and 'yoffset' fields of the 'var' structure. If the values
1037  * don't fit, return -EINVAL.
1038  */
1039 static int fsl_diu_pan_display(struct fb_var_screeninfo *var,
1040                              struct fb_info *info)
1041 {
1042         if ((info->var.xoffset == var->xoffset) &&
1043             (info->var.yoffset == var->yoffset))
1044                 return 0;       /* No change, do nothing */
1045
1046         if (var->xoffset < 0 || var->yoffset < 0
1047             || var->xoffset + info->var.xres > info->var.xres_virtual
1048             || var->yoffset + info->var.yres > info->var.yres_virtual)
1049                 return -EINVAL;
1050
1051         info->var.xoffset = var->xoffset;
1052         info->var.yoffset = var->yoffset;
1053
1054         if (var->vmode & FB_VMODE_YWRAP)
1055                 info->var.vmode |= FB_VMODE_YWRAP;
1056         else
1057                 info->var.vmode &= ~FB_VMODE_YWRAP;
1058
1059         fsl_diu_set_aoi(info);
1060
1061         return 0;
1062 }
1063
1064 static int fsl_diu_ioctl(struct fb_info *info, unsigned int cmd,
1065                        unsigned long arg)
1066 {
1067         struct mfb_info *mfbi = info->par;
1068         struct diu_ad *ad = mfbi->ad;
1069         struct mfb_chroma_key ck;
1070         unsigned char global_alpha;
1071         struct aoi_display_offset aoi_d;
1072         __u32 pix_fmt;
1073         void __user *buf = (void __user *)arg;
1074
1075         if (!arg)
1076                 return -EINVAL;
1077         switch (cmd) {
1078         case MFB_SET_PIXFMT_OLD:
1079                 dev_warn(info->dev,
1080                          "MFB_SET_PIXFMT value of 0x%08x is deprecated.\n",
1081                          MFB_SET_PIXFMT_OLD);
1082         case MFB_SET_PIXFMT:
1083                 if (copy_from_user(&pix_fmt, buf, sizeof(pix_fmt)))
1084                         return -EFAULT;
1085                 ad->pix_fmt = pix_fmt;
1086                 break;
1087         case MFB_GET_PIXFMT_OLD:
1088                 dev_warn(info->dev,
1089                          "MFB_GET_PIXFMT value of 0x%08x is deprecated.\n",
1090                          MFB_GET_PIXFMT_OLD);
1091         case MFB_GET_PIXFMT:
1092                 pix_fmt = ad->pix_fmt;
1093                 if (copy_to_user(buf, &pix_fmt, sizeof(pix_fmt)))
1094                         return -EFAULT;
1095                 break;
1096         case MFB_SET_AOID:
1097                 if (copy_from_user(&aoi_d, buf, sizeof(aoi_d)))
1098                         return -EFAULT;
1099                 mfbi->x_aoi_d = aoi_d.x_aoi_d;
1100                 mfbi->y_aoi_d = aoi_d.y_aoi_d;
1101                 fsl_diu_check_var(&info->var, info);
1102                 fsl_diu_set_aoi(info);
1103                 break;
1104         case MFB_GET_AOID:
1105                 aoi_d.x_aoi_d = mfbi->x_aoi_d;
1106                 aoi_d.y_aoi_d = mfbi->y_aoi_d;
1107                 if (copy_to_user(buf, &aoi_d, sizeof(aoi_d)))
1108                         return -EFAULT;
1109                 break;
1110         case MFB_GET_ALPHA:
1111                 global_alpha = mfbi->g_alpha;
1112                 if (copy_to_user(buf, &global_alpha, sizeof(global_alpha)))
1113                         return -EFAULT;
1114                 break;
1115         case MFB_SET_ALPHA:
1116                 /* set panel information */
1117                 if (copy_from_user(&global_alpha, buf, sizeof(global_alpha)))
1118                         return -EFAULT;
1119                 ad->src_size_g_alpha = (ad->src_size_g_alpha & (~0xff)) |
1120                                                         (global_alpha & 0xff);
1121                 mfbi->g_alpha = global_alpha;
1122                 break;
1123         case MFB_SET_CHROMA_KEY:
1124                 /* set panel winformation */
1125                 if (copy_from_user(&ck, buf, sizeof(ck)))
1126                         return -EFAULT;
1127
1128                 if (ck.enable &&
1129                    (ck.red_max < ck.red_min ||
1130                     ck.green_max < ck.green_min ||
1131                     ck.blue_max < ck.blue_min))
1132                         return -EINVAL;
1133
1134                 if (!ck.enable) {
1135                         ad->ckmax_r = 0;
1136                         ad->ckmax_g = 0;
1137                         ad->ckmax_b = 0;
1138                         ad->ckmin_r = 255;
1139                         ad->ckmin_g = 255;
1140                         ad->ckmin_b = 255;
1141                 } else {
1142                         ad->ckmax_r = ck.red_max;
1143                         ad->ckmax_g = ck.green_max;
1144                         ad->ckmax_b = ck.blue_max;
1145                         ad->ckmin_r = ck.red_min;
1146                         ad->ckmin_g = ck.green_min;
1147                         ad->ckmin_b = ck.blue_min;
1148                 }
1149                 break;
1150         default:
1151                 dev_err(info->dev, "unknown ioctl command (0x%08X)\n", cmd);
1152                 return -ENOIOCTLCMD;
1153         }
1154
1155         return 0;
1156 }
1157
1158 /* turn on fb if count == 1
1159  */
1160 static int fsl_diu_open(struct fb_info *info, int user)
1161 {
1162         struct mfb_info *mfbi = info->par;
1163         int res = 0;
1164
1165         /* free boot splash memory on first /dev/fb0 open */
1166         if ((mfbi->index == PLANE0) && diu_ops.release_bootmem)
1167                 diu_ops.release_bootmem();
1168
1169         spin_lock(&diu_lock);
1170         mfbi->count++;
1171         if (mfbi->count == 1) {
1172                 fsl_diu_check_var(&info->var, info);
1173                 res = fsl_diu_set_par(info);
1174                 if (res < 0)
1175                         mfbi->count--;
1176                 else
1177                         fsl_diu_enable_panel(info);
1178         }
1179
1180         spin_unlock(&diu_lock);
1181         return res;
1182 }
1183
1184 /* turn off fb if count == 0
1185  */
1186 static int fsl_diu_release(struct fb_info *info, int user)
1187 {
1188         struct mfb_info *mfbi = info->par;
1189         int res = 0;
1190
1191         spin_lock(&diu_lock);
1192         mfbi->count--;
1193         if (mfbi->count == 0)
1194                 fsl_diu_disable_panel(info);
1195
1196         spin_unlock(&diu_lock);
1197         return res;
1198 }
1199
1200 static struct fb_ops fsl_diu_ops = {
1201         .owner = THIS_MODULE,
1202         .fb_check_var = fsl_diu_check_var,
1203         .fb_set_par = fsl_diu_set_par,
1204         .fb_setcolreg = fsl_diu_setcolreg,
1205         .fb_pan_display = fsl_diu_pan_display,
1206         .fb_fillrect = cfb_fillrect,
1207         .fb_copyarea = cfb_copyarea,
1208         .fb_imageblit = cfb_imageblit,
1209         .fb_ioctl = fsl_diu_ioctl,
1210         .fb_open = fsl_diu_open,
1211         .fb_release = fsl_diu_release,
1212 };
1213
1214 static int init_fbinfo(struct fb_info *info)
1215 {
1216         struct mfb_info *mfbi = info->par;
1217
1218         info->device = NULL;
1219         info->var.activate = FB_ACTIVATE_NOW;
1220         info->fbops = &fsl_diu_ops;
1221         info->flags = FBINFO_FLAG_DEFAULT;
1222         info->pseudo_palette = &mfbi->pseudo_palette;
1223
1224         /* Allocate colormap */
1225         fb_alloc_cmap(&info->cmap, 16, 0);
1226         return 0;
1227 }
1228
1229 static int __devinit install_fb(struct fb_info *info)
1230 {
1231         int rc;
1232         struct mfb_info *mfbi = info->par;
1233         const char *aoi_mode, *init_aoi_mode = "320x240";
1234         struct fb_videomode *db = fsl_diu_mode_db;
1235         unsigned int dbsize = ARRAY_SIZE(fsl_diu_mode_db);
1236         int has_default_mode = 1;
1237
1238         if (init_fbinfo(info))
1239                 return -EINVAL;
1240
1241         if (mfbi->index == PLANE0) {
1242                 if (mfbi->edid_data) {
1243                         /* Now build modedb from EDID */
1244                         fb_edid_to_monspecs(mfbi->edid_data, &info->monspecs);
1245                         fb_videomode_to_modelist(info->monspecs.modedb,
1246                                                  info->monspecs.modedb_len,
1247                                                  &info->modelist);
1248                         db = info->monspecs.modedb;
1249                         dbsize = info->monspecs.modedb_len;
1250                 }
1251                 aoi_mode = fb_mode;
1252         } else {
1253                 aoi_mode = init_aoi_mode;
1254         }
1255         rc = fb_find_mode(&info->var, info, aoi_mode, db, dbsize, NULL,
1256                           default_bpp);
1257         if (!rc) {
1258                 /*
1259                  * For plane 0 we continue and look into
1260                  * driver's internal modedb.
1261                  */
1262                 if ((mfbi->index == PLANE0) && mfbi->edid_data)
1263                         has_default_mode = 0;
1264                 else
1265                         return -EINVAL;
1266         }
1267
1268         if (!has_default_mode) {
1269                 rc = fb_find_mode(&info->var, info, aoi_mode, fsl_diu_mode_db,
1270                         ARRAY_SIZE(fsl_diu_mode_db), NULL, default_bpp);
1271                 if (rc)
1272                         has_default_mode = 1;
1273         }
1274
1275         /* Still not found, use preferred mode from database if any */
1276         if (!has_default_mode && info->monspecs.modedb) {
1277                 struct fb_monspecs *specs = &info->monspecs;
1278                 struct fb_videomode *modedb = &specs->modedb[0];
1279
1280                 /*
1281                  * Get preferred timing. If not found,
1282                  * first mode in database will be used.
1283                  */
1284                 if (specs->misc & FB_MISC_1ST_DETAIL) {
1285                         int i;
1286
1287                         for (i = 0; i < specs->modedb_len; i++) {
1288                                 if (specs->modedb[i].flag & FB_MODE_IS_FIRST) {
1289                                         modedb = &specs->modedb[i];
1290                                         break;
1291                                 }
1292                         }
1293                 }
1294
1295                 info->var.bits_per_pixel = default_bpp;
1296                 fb_videomode_to_var(&info->var, modedb);
1297         }
1298
1299         if (fsl_diu_check_var(&info->var, info)) {
1300                 dev_err(info->dev, "fsl_diu_check_var failed\n");
1301                 unmap_video_memory(info);
1302                 fb_dealloc_cmap(&info->cmap);
1303                 return -EINVAL;
1304         }
1305
1306         if (register_framebuffer(info) < 0) {
1307                 dev_err(info->dev, "register_framebuffer failed\n");
1308                 unmap_video_memory(info);
1309                 fb_dealloc_cmap(&info->cmap);
1310                 return -EINVAL;
1311         }
1312
1313         mfbi->registered = 1;
1314         dev_info(info->dev, "%s registered successfully\n", mfbi->id);
1315
1316         return 0;
1317 }
1318
1319 static void uninstall_fb(struct fb_info *info)
1320 {
1321         struct mfb_info *mfbi = info->par;
1322
1323         if (!mfbi->registered)
1324                 return;
1325
1326         if (mfbi->index == PLANE0)
1327                 kfree(mfbi->edid_data);
1328
1329         unregister_framebuffer(info);
1330         unmap_video_memory(info);
1331         if (&info->cmap)
1332                 fb_dealloc_cmap(&info->cmap);
1333
1334         mfbi->registered = 0;
1335 }
1336
1337 static irqreturn_t fsl_diu_isr(int irq, void *dev_id)
1338 {
1339         struct diu __iomem *hw = dev_id;
1340         unsigned int status = in_be32(&hw->int_status);
1341
1342         if (status) {
1343                 /* This is the workaround for underrun */
1344                 if (status & INT_UNDRUN) {
1345                         out_be32(&hw->diu_mode, 0);
1346                         udelay(1);
1347                         out_be32(&hw->diu_mode, 1);
1348                 }
1349 #if defined(CONFIG_NOT_COHERENT_CACHE)
1350                 else if (status & INT_VSYNC) {
1351                         unsigned int i;
1352
1353                         for (i = 0; i < coherence_data_size;
1354                                 i += d_cache_line_size)
1355                                 __asm__ __volatile__ (
1356                                         "dcbz 0, %[input]"
1357                                 ::[input]"r"(&coherence_data[i]));
1358                 }
1359 #endif
1360                 return IRQ_HANDLED;
1361         }
1362         return IRQ_NONE;
1363 }
1364
1365 static int request_irq_local(struct fsl_diu_data *machine_data)
1366 {
1367         struct diu __iomem *hw = machine_data->diu_reg;
1368         u32 ints;
1369         int ret;
1370
1371         /* Read to clear the status */
1372         in_be32(&hw->int_status);
1373
1374         ret = request_irq(machine_data->irq, fsl_diu_isr, 0, "fsl-diu-fb", hw);
1375         if (!ret) {
1376                 ints = INT_PARERR | INT_LS_BF_VS;
1377 #if !defined(CONFIG_NOT_COHERENT_CACHE)
1378                 ints |= INT_VSYNC;
1379 #endif
1380
1381                 /* Read to clear the status */
1382                 in_be32(&hw->int_status);
1383                 out_be32(&hw->int_mask, ints);
1384         }
1385
1386         return ret;
1387 }
1388
1389 static void free_irq_local(struct fsl_diu_data *machine_data)
1390 {
1391         struct diu __iomem *hw = machine_data->diu_reg;
1392
1393         /* Disable all LCDC interrupt */
1394         out_be32(&hw->int_mask, 0x1f);
1395
1396         free_irq(machine_data->irq, NULL);
1397 }
1398
1399 #ifdef CONFIG_PM
1400 /*
1401  * Power management hooks. Note that we won't be called from IRQ context,
1402  * unlike the blank functions above, so we may sleep.
1403  */
1404 static int fsl_diu_suspend(struct platform_device *ofdev, pm_message_t state)
1405 {
1406         struct fsl_diu_data *machine_data;
1407
1408         machine_data = dev_get_drvdata(&ofdev->dev);
1409         disable_lcdc(machine_data->fsl_diu_info[0]);
1410
1411         return 0;
1412 }
1413
1414 static int fsl_diu_resume(struct platform_device *ofdev)
1415 {
1416         struct fsl_diu_data *machine_data;
1417
1418         machine_data = dev_get_drvdata(&ofdev->dev);
1419         enable_lcdc(machine_data->fsl_diu_info[0]);
1420
1421         return 0;
1422 }
1423
1424 #else
1425 #define fsl_diu_suspend NULL
1426 #define fsl_diu_resume NULL
1427 #endif                          /* CONFIG_PM */
1428
1429 /* Align to 64-bit(8-byte), 32-byte, etc. */
1430 static int allocate_buf(struct device *dev, struct diu_addr *buf, u32 size,
1431                         u32 bytes_align)
1432 {
1433         u32 offset;
1434         dma_addr_t mask;
1435
1436         buf->vaddr =
1437                 dma_alloc_coherent(dev, size + bytes_align, &buf->paddr,
1438                                    GFP_DMA | __GFP_ZERO);
1439         if (!buf->vaddr)
1440                 return -ENOMEM;
1441
1442         mask = bytes_align - 1;
1443         offset = buf->paddr & mask;
1444         if (offset) {
1445                 buf->offset = bytes_align - offset;
1446                 buf->paddr = buf->paddr + offset;
1447         } else
1448                 buf->offset = 0;
1449
1450         return 0;
1451 }
1452
1453 static void free_buf(struct device *dev, struct diu_addr *buf, u32 size,
1454                      u32 bytes_align)
1455 {
1456         dma_free_coherent(dev, size + bytes_align, buf->vaddr,
1457                           buf->paddr - buf->offset);
1458 }
1459
1460 static ssize_t store_monitor(struct device *device,
1461         struct device_attribute *attr, const char *buf, size_t count)
1462 {
1463         enum fsl_diu_monitor_port old_monitor_port;
1464         struct fsl_diu_data *machine_data =
1465                 container_of(attr, struct fsl_diu_data, dev_attr);
1466
1467         old_monitor_port = machine_data->monitor_port;
1468         machine_data->monitor_port = fsl_diu_name_to_port(buf);
1469
1470         if (old_monitor_port != machine_data->monitor_port) {
1471                 /* All AOIs need adjust pixel format
1472                  * fsl_diu_set_par only change the pixsel format here
1473                  * unlikely to fail. */
1474                 fsl_diu_set_par(machine_data->fsl_diu_info[0]);
1475                 fsl_diu_set_par(machine_data->fsl_diu_info[1]);
1476                 fsl_diu_set_par(machine_data->fsl_diu_info[2]);
1477                 fsl_diu_set_par(machine_data->fsl_diu_info[3]);
1478                 fsl_diu_set_par(machine_data->fsl_diu_info[4]);
1479         }
1480         return count;
1481 }
1482
1483 static ssize_t show_monitor(struct device *device,
1484         struct device_attribute *attr, char *buf)
1485 {
1486         struct fsl_diu_data *machine_data =
1487                 container_of(attr, struct fsl_diu_data, dev_attr);
1488
1489         switch (machine_data->monitor_port) {
1490         case FSL_DIU_PORT_DVI:
1491                 return sprintf(buf, "DVI\n");
1492         case FSL_DIU_PORT_LVDS:
1493                 return sprintf(buf, "Single-link LVDS\n");
1494         case FSL_DIU_PORT_DLVDS:
1495                 return sprintf(buf, "Dual-link LVDS\n");
1496         }
1497
1498         return 0;
1499 }
1500
1501 static int __devinit fsl_diu_probe(struct platform_device *pdev)
1502 {
1503         struct device_node *np = pdev->dev.of_node;
1504         struct mfb_info *mfbi;
1505         phys_addr_t dummy_ad_addr = 0;
1506         int ret, i, error = 0;
1507         struct fsl_diu_data *machine_data;
1508         int diu_mode;
1509
1510         machine_data = kzalloc(sizeof(struct fsl_diu_data), GFP_KERNEL);
1511         if (!machine_data)
1512                 return -ENOMEM;
1513
1514         spin_lock_init(&machine_data->reg_lock);
1515
1516         for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++) {
1517                 machine_data->fsl_diu_info[i] =
1518                         framebuffer_alloc(sizeof(struct mfb_info), &pdev->dev);
1519                 if (!machine_data->fsl_diu_info[i]) {
1520                         dev_err(&pdev->dev, "cannot allocate memory\n");
1521                         ret = -ENOMEM;
1522                         goto error2;
1523                 }
1524                 mfbi = machine_data->fsl_diu_info[i]->par;
1525                 memcpy(mfbi, &mfb_template[i], sizeof(struct mfb_info));
1526                 mfbi->parent = machine_data;
1527
1528                 if (mfbi->index == PLANE0) {
1529                         const u8 *prop;
1530                         int len;
1531
1532                         /* Get EDID */
1533                         prop = of_get_property(np, "edid", &len);
1534                         if (prop && len == EDID_LENGTH)
1535                                 mfbi->edid_data = kmemdup(prop, EDID_LENGTH,
1536                                                           GFP_KERNEL);
1537                 }
1538         }
1539
1540         machine_data->diu_reg = of_iomap(np, 0);
1541         if (!machine_data->diu_reg) {
1542                 dev_err(&pdev->dev, "cannot map DIU registers\n");
1543                 ret = -EFAULT;
1544                 goto error2;
1545         }
1546
1547         diu_mode = in_be32(&machine_data->diu_reg->diu_mode);
1548         if (diu_mode == MFB_MODE0)
1549                 out_be32(&machine_data->diu_reg->diu_mode, 0); /* disable DIU */
1550
1551         /* Get the IRQ of the DIU */
1552         machine_data->irq = irq_of_parse_and_map(np, 0);
1553
1554         if (!machine_data->irq) {
1555                 dev_err(&pdev->dev, "could not get DIU IRQ\n");
1556                 ret = -EINVAL;
1557                 goto error;
1558         }
1559         machine_data->monitor_port = monitor_port;
1560
1561         /* Area descriptor memory pool aligns to 64-bit boundary */
1562         if (allocate_buf(&pdev->dev, &machine_data->ad,
1563                          sizeof(struct diu_ad) * FSL_AOI_NUM, 8))
1564                 return -ENOMEM;
1565
1566         /* Get memory for Gamma Table  - 32-byte aligned memory */
1567         if (allocate_buf(&pdev->dev, &machine_data->gamma, 768, 32)) {
1568                 ret = -ENOMEM;
1569                 goto error;
1570         }
1571
1572         /* For performance, cursor bitmap buffer aligns to 32-byte boundary */
1573         if (allocate_buf(&pdev->dev, &machine_data->cursor,
1574                          MAX_CURS * MAX_CURS * 2, 32)) {
1575                 ret = -ENOMEM;
1576                 goto error;
1577         }
1578
1579         i = ARRAY_SIZE(machine_data->fsl_diu_info);
1580         machine_data->dummy_ad = (struct diu_ad *)((u32)machine_data->ad.vaddr +
1581                         machine_data->ad.offset) + i;
1582         machine_data->dummy_ad->paddr = machine_data->ad.paddr +
1583                         i * sizeof(struct diu_ad);
1584         machine_data->dummy_aoi_virt = fsl_diu_alloc(64, &dummy_ad_addr);
1585         if (!machine_data->dummy_aoi_virt) {
1586                 ret = -ENOMEM;
1587                 goto error;
1588         }
1589         machine_data->dummy_ad->addr = cpu_to_le32(dummy_ad_addr);
1590         machine_data->dummy_ad->pix_fmt = 0x88882317;
1591         machine_data->dummy_ad->src_size_g_alpha = cpu_to_le32((4 << 12) | 4);
1592         machine_data->dummy_ad->aoi_size = cpu_to_le32((4 << 16) |  2);
1593         machine_data->dummy_ad->offset_xyi = 0;
1594         machine_data->dummy_ad->offset_xyd = 0;
1595         machine_data->dummy_ad->next_ad = 0;
1596
1597         /*
1598          * Let DIU display splash screen if it was pre-initialized
1599          * by the bootloader, set dummy area descriptor otherwise.
1600          */
1601         if (diu_mode == MFB_MODE0)
1602                 out_be32(&machine_data->diu_reg->desc[0],
1603                          machine_data->dummy_ad->paddr);
1604
1605         out_be32(&machine_data->diu_reg->desc[1], machine_data->dummy_ad->paddr);
1606         out_be32(&machine_data->diu_reg->desc[2], machine_data->dummy_ad->paddr);
1607
1608         for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++) {
1609                 machine_data->fsl_diu_info[i]->fix.smem_start = 0;
1610                 mfbi = machine_data->fsl_diu_info[i]->par;
1611                 mfbi->ad = (struct diu_ad *)((u32)machine_data->ad.vaddr
1612                                         + machine_data->ad.offset) + i;
1613                 mfbi->ad->paddr =
1614                         machine_data->ad.paddr + i * sizeof(struct diu_ad);
1615                 ret = install_fb(machine_data->fsl_diu_info[i]);
1616                 if (ret) {
1617                         dev_err(&pdev->dev, "could not register fb %d\n", i);
1618                         goto error;
1619                 }
1620         }
1621
1622         if (request_irq_local(machine_data)) {
1623                 dev_err(&pdev->dev, "could not claim irq\n");
1624                 goto error;
1625         }
1626
1627         sysfs_attr_init(&machine_data->dev_attr.attr);
1628         machine_data->dev_attr.attr.name = "monitor";
1629         machine_data->dev_attr.attr.mode = S_IRUGO|S_IWUSR;
1630         machine_data->dev_attr.show = show_monitor;
1631         machine_data->dev_attr.store = store_monitor;
1632         error = device_create_file(machine_data->fsl_diu_info[0]->dev,
1633                                   &machine_data->dev_attr);
1634         if (error) {
1635                 dev_err(&pdev->dev, "could not create sysfs file %s\n",
1636                         machine_data->dev_attr.attr.name);
1637         }
1638
1639         dev_set_drvdata(&pdev->dev, machine_data);
1640         return 0;
1641
1642 error:
1643         for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++)
1644                 uninstall_fb(machine_data->fsl_diu_info[i]);
1645
1646         if (machine_data->ad.vaddr)
1647                 free_buf(&pdev->dev, &machine_data->ad,
1648                          sizeof(struct diu_ad) * FSL_AOI_NUM, 8);
1649         if (machine_data->gamma.vaddr)
1650                 free_buf(&pdev->dev, &machine_data->gamma, 768, 32);
1651         if (machine_data->cursor.vaddr)
1652                 free_buf(&pdev->dev, &machine_data->cursor,
1653                          MAX_CURS * MAX_CURS * 2, 32);
1654         if (machine_data->dummy_aoi_virt)
1655                 fsl_diu_free(machine_data->dummy_aoi_virt, 64);
1656         iounmap(machine_data->diu_reg);
1657
1658 error2:
1659         for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++)
1660                 if (machine_data->fsl_diu_info[i])
1661                         framebuffer_release(machine_data->fsl_diu_info[i]);
1662         kfree(machine_data);
1663
1664         return ret;
1665 }
1666
1667 static int fsl_diu_remove(struct platform_device *pdev)
1668 {
1669         struct fsl_diu_data *machine_data;
1670         int i;
1671
1672         machine_data = dev_get_drvdata(&pdev->dev);
1673         disable_lcdc(machine_data->fsl_diu_info[0]);
1674         free_irq_local(machine_data);
1675         for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++)
1676                 uninstall_fb(machine_data->fsl_diu_info[i]);
1677         if (machine_data->ad.vaddr)
1678                 free_buf(&pdev->dev, &machine_data->ad,
1679                          sizeof(struct diu_ad) * FSL_AOI_NUM, 8);
1680         if (machine_data->gamma.vaddr)
1681                 free_buf(&pdev->dev, &machine_data->gamma, 768, 32);
1682         if (machine_data->cursor.vaddr)
1683                 free_buf(&pdev->dev, &machine_data->cursor,
1684                          MAX_CURS * MAX_CURS * 2, 32);
1685         if (machine_data->dummy_aoi_virt)
1686                 fsl_diu_free(machine_data->dummy_aoi_virt, 64);
1687         iounmap(machine_data->diu_reg);
1688         for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++)
1689                 if (machine_data->fsl_diu_info[i])
1690                         framebuffer_release(machine_data->fsl_diu_info[i]);
1691         kfree(machine_data);
1692
1693         return 0;
1694 }
1695
1696 #ifndef MODULE
1697 static int __init fsl_diu_setup(char *options)
1698 {
1699         char *opt;
1700         unsigned long val;
1701
1702         if (!options || !*options)
1703                 return 0;
1704
1705         while ((opt = strsep(&options, ",")) != NULL) {
1706                 if (!*opt)
1707                         continue;
1708                 if (!strncmp(opt, "monitor=", 8)) {
1709                         monitor_port = fsl_diu_name_to_port(opt + 8);
1710                 } else if (!strncmp(opt, "bpp=", 4)) {
1711                         if (!strict_strtoul(opt + 4, 10, &val))
1712                                 default_bpp = val;
1713                 } else
1714                         fb_mode = opt;
1715         }
1716
1717         return 0;
1718 }
1719 #endif
1720
1721 static struct of_device_id fsl_diu_match[] = {
1722 #ifdef CONFIG_PPC_MPC512x
1723         {
1724                 .compatible = "fsl,mpc5121-diu",
1725         },
1726 #endif
1727         {
1728                 .compatible = "fsl,diu",
1729         },
1730         {}
1731 };
1732 MODULE_DEVICE_TABLE(of, fsl_diu_match);
1733
1734 static struct platform_driver fsl_diu_driver = {
1735         .driver = {
1736                 .name = "fsl-diu-fb",
1737                 .owner = THIS_MODULE,
1738                 .of_match_table = fsl_diu_match,
1739         },
1740         .probe          = fsl_diu_probe,
1741         .remove         = fsl_diu_remove,
1742         .suspend        = fsl_diu_suspend,
1743         .resume         = fsl_diu_resume,
1744 };
1745
1746 static int __init fsl_diu_init(void)
1747 {
1748 #ifdef CONFIG_NOT_COHERENT_CACHE
1749         struct device_node *np;
1750         const u32 *prop;
1751 #endif
1752         int ret;
1753 #ifndef MODULE
1754         char *option;
1755
1756         /*
1757          * For kernel boot options (in 'video=xxxfb:<options>' format)
1758          */
1759         if (fb_get_options("fslfb", &option))
1760                 return -ENODEV;
1761         fsl_diu_setup(option);
1762 #else
1763         monitor_port = fsl_diu_name_to_port(monitor_string);
1764 #endif
1765
1766         /*
1767          * Must to verify set_pixel_clock. If not implement on platform,
1768          * then that means that there is no platform support for the DIU.
1769          */
1770         if (!diu_ops.set_pixel_clock)
1771                 return -ENODEV;
1772
1773         pr_info("Freescale Display Interface Unit (DIU) framebuffer driver\n");
1774
1775 #ifdef CONFIG_NOT_COHERENT_CACHE
1776         np = of_find_node_by_type(NULL, "cpu");
1777         if (!np) {
1778                 pr_err("fsl-diu-fb: can't find 'cpu' device node\n");
1779                 return -ENODEV;
1780         }
1781
1782         prop = of_get_property(np, "d-cache-size", NULL);
1783         if (prop == NULL) {
1784                 pr_err("fsl-diu-fb: missing 'd-cache-size' property' "
1785                        "in 'cpu' node\n");
1786                 of_node_put(np);
1787                 return -ENODEV;
1788         }
1789
1790         /*
1791          * Freescale PLRU requires 13/8 times the cache size to do a proper
1792          * displacement flush
1793          */
1794         coherence_data_size = be32_to_cpup(prop) * 13;
1795         coherence_data_size /= 8;
1796
1797         prop = of_get_property(np, "d-cache-line-size", NULL);
1798         if (prop == NULL) {
1799                 pr_err("fsl-diu-fb: missing 'd-cache-line-size' property' "
1800                        "in 'cpu' node\n");
1801                 of_node_put(np);
1802                 return -ENODEV;
1803         }
1804         d_cache_line_size = be32_to_cpup(prop);
1805
1806         of_node_put(np);
1807         coherence_data = vmalloc(coherence_data_size);
1808         if (!coherence_data)
1809                 return -ENOMEM;
1810 #endif
1811
1812         ret = platform_driver_register(&fsl_diu_driver);
1813         if (ret) {
1814                 pr_err("fsl-diu-fb: failed to register platform driver\n");
1815 #if defined(CONFIG_NOT_COHERENT_CACHE)
1816                 vfree(coherence_data);
1817 #endif
1818         }
1819         return ret;
1820 }
1821
1822 static void __exit fsl_diu_exit(void)
1823 {
1824         platform_driver_unregister(&fsl_diu_driver);
1825 #if defined(CONFIG_NOT_COHERENT_CACHE)
1826         vfree(coherence_data);
1827 #endif
1828 }
1829
1830 module_init(fsl_diu_init);
1831 module_exit(fsl_diu_exit);
1832
1833 MODULE_AUTHOR("York Sun <yorksun@freescale.com>");
1834 MODULE_DESCRIPTION("Freescale DIU framebuffer driver");
1835 MODULE_LICENSE("GPL");
1836
1837 module_param_named(mode, fb_mode, charp, 0);
1838 MODULE_PARM_DESC(mode,
1839         "Specify resolution as \"<xres>x<yres>[-<bpp>][@<refresh>]\" ");
1840 module_param_named(bpp, default_bpp, ulong, 0);
1841 MODULE_PARM_DESC(bpp, "Specify bit-per-pixel if not specified in 'mode'");
1842 module_param_named(monitor, monitor_string, charp, 0);
1843 MODULE_PARM_DESC(monitor, "Specify the monitor port "
1844         "(\"dvi\", \"lvds\", or \"dlvds\") if supported by the platform");
1845