drivers/video/bf54x-lq043fb.c

   1 /*
   2  * File:         drivers/video/bf54x-lq043.c
   3  * Based on:
   4  * Author:       Michael Hennerich <hennerich@blackfin.uclinux.org>
   5  *
   6  * Created:
   7  * Description:  ADSP-BF54x Framebufer driver
   8  *
   9  *
  10  * Modified:
  11 <<<<<<< HEAD:drivers/video/bf54x-lq043fb.c
  12  *               Copyright 2004-2007 Analog Devices Inc.
  13 =======
  14  *               Copyright 2007-2008 Analog Devices Inc.
  15 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/video/bf54x-lq043fb.c
  16  *
  17  * Bugs:         Enter bugs at http://blackfin.uclinux.org/
  18  *
  19  * This program is free software; you can redistribute it and/or modify
  20  * it under the terms of the GNU General Public License as published by
  21  * the Free Software Foundation; either version 2 of the License, or
  22  * (at your option) any later version.
  23  *
  24  * This program is distributed in the hope that it will be useful,
  25  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  26  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  27  * GNU General Public License for more details.
  28  *
  29  * You should have received a copy of the GNU General Public License
  30  * along with this program; if not, see the file COPYING, or write
  31  * to the Free Software Foundation, Inc.,
  32  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  33  */
  34
  35 #include <linux/module.h>
  36 #include <linux/kernel.h>
  37 #include <linux/errno.h>
  38 #include <linux/string.h>
  39 #include <linux/mm.h>
  40 #include <linux/tty.h>
  41 #include <linux/slab.h>
  42 #include <linux/delay.h>
  43 #include <linux/fb.h>
  44 #include <linux/ioport.h>
  45 #include <linux/init.h>
  46 #include <linux/types.h>
  47 #include <linux/interrupt.h>
  48 #include <linux/sched.h>
  49 #include <linux/timer.h>
  50 #include <linux/device.h>
  51 #include <linux/backlight.h>
  52 #include <linux/lcd.h>
  53 #include <linux/spinlock.h>
  54 #include <linux/dma-mapping.h>
  55 #include <linux/platform_device.h>
  56
  57 #include <asm/blackfin.h>
  58 #include <asm/irq.h>
  59 #include <asm/dpmc.h>
  60 #include <asm/dma-mapping.h>
  61 #include <asm/dma.h>
  62 #include <asm/gpio.h>
  63 #include <asm/portmux.h>
  64
  65 #include <asm/mach/bf54x-lq043.h>
  66
  67 #define NO_BL_SUPPORT
  68
  69 #define DRIVER_NAME "bf54x-lq043"
  70 static char driver_name[] = DRIVER_NAME;
  71
  72 #define BFIN_LCD_NBR_PALETTE_ENTRIES    256
  73
  74 #define EPPI0_18 {P_PPI0_CLK, P_PPI0_FS1, P_PPI0_FS2, P_PPI0_D0, P_PPI0_D1, P_PPI0_D2, P_PPI0_D3, \
  75  P_PPI0_D4, P_PPI0_D5, P_PPI0_D6, P_PPI0_D7, P_PPI0_D8, P_PPI0_D9, P_PPI0_D10, \
  76  P_PPI0_D11, P_PPI0_D12, P_PPI0_D13, P_PPI0_D14, P_PPI0_D15, P_PPI0_D16, P_PPI0_D17, 0}
  77
  78 #define EPPI0_24 {P_PPI0_D18, P_PPI0_D19, P_PPI0_D20, P_PPI0_D21, P_PPI0_D22, P_PPI0_D23, 0}
  79
  80 struct bfin_bf54xfb_info {
  81         struct fb_info *fb;
  82         struct device *dev;
  83
  84         struct bfin_bf54xfb_mach_info *mach_info;
  85
  86         unsigned char *fb_buffer;       /* RGB Buffer */
  87
  88         dma_addr_t dma_handle;
  89         int lq043_mmap;
  90         int lq043_open_cnt;
  91         int irq;
  92         spinlock_t lock;        /* lock */
  93 };
  94
  95 static int nocursor;
  96 module_param(nocursor, int, 0644);
  97 MODULE_PARM_DESC(nocursor, "cursor enable/disable");
  98
  99 static int outp_rgb666;
 100 module_param(outp_rgb666, int, 0);
 101 MODULE_PARM_DESC(outp_rgb666, "Output 18-bit RGB666");
 102
 103 #define LCD_X_RES               480     /*Horizontal Resolution */
 104 #define LCD_Y_RES               272     /* Vertical Resolution */
 105
 106 #define LCD_BPP                 24      /* Bit Per Pixel */
 107 #define DMA_BUS_SIZE            32
 108
 109 /*      -- Horizontal synchronizing --
 110  *
 111  * Timing characteristics taken from the SHARP LQ043T1DG01 datasheet
 112  * (LCY-W-06602A Page 9 of 22)
 113  *
 114  * Clock Frequency      1/Tc Min 7.83 Typ 9.00 Max 9.26 MHz
 115  *
 116  * Period               TH - 525 - Clock
 117  * Pulse width          THp - 41 - Clock
 118  * Horizontal period    THd - 480 - Clock
 119  * Back porch           THb - 2 - Clock
 120  * Front porch          THf - 2 - Clock
 121  *
 122  * -- Vertical synchronizing --
 123  * Period               TV - 286 - Line
 124  * Pulse width          TVp - 10 - Line
 125  * Vertical period      TVd - 272 - Line
 126  * Back porch           TVb - 2 - Line
 127  * Front porch          TVf - 2 - Line
 128  */
 129
 130 #define LCD_CLK                 (8*1000*1000)   /* 8MHz */
 131
 132 /* # active data to transfer after Horizontal Delay clock */
 133 #define EPPI_HCOUNT             LCD_X_RES
 134
 135 /* # active lines to transfer after Vertical Delay clock */
 136 #define EPPI_VCOUNT             LCD_Y_RES
 137
 138 /* Samples per Line = 480 (active data) + 45 (padding) */
 139 #define EPPI_LINE               525
 140
 141 /* Lines per Frame = 272 (active data) + 14 (padding) */
 142 #define EPPI_FRAME              286
 143
 144 /* FS1 (Hsync) Width (Typical)*/
 145 #define EPPI_FS1W_HBL           41
 146
 147 /* FS1 (Hsync) Period (Typical) */
 148 #define EPPI_FS1P_AVPL          EPPI_LINE
 149
 150 /* Horizontal Delay clock after assertion of Hsync (Typical) */
 151 #define EPPI_HDELAY             43
 152
 153 /* FS2 (Vsync) Width    = FS1 (Hsync) Period * 10 */
 154 #define EPPI_FS2W_LVB           (EPPI_LINE * 10)
 155
 156  /* FS2 (Vsync) Period   = FS1 (Hsync) Period * Lines per Frame */
 157 #define EPPI_FS2P_LAVF          (EPPI_LINE * EPPI_FRAME)
 158
 159 /* Vertical Delay after assertion of Vsync (2 Lines) */
 160 #define EPPI_VDELAY             12
 161
 162 #define EPPI_CLIP               0xFF00FF00
 163
 164 /* EPPI Control register configuration value for RGB out
 165  * - EPPI as Output
 166  * GP 2 frame sync mode,
 167  * Internal Clock generation disabled, Internal FS generation enabled,
 168  * Receives samples on EPPI_CLK raising edge, Transmits samples on EPPI_CLK falling edge,
 169  * FS1 & FS2 are active high,
 170  * DLEN = 6 (24 bits for RGB888 out) or 5 (18 bits for RGB666 out)
 171  * DMA Unpacking disabled when RGB Formating is enabled, otherwise DMA unpacking enabled
 172  * Swapping Enabled,
 173  * One (DMA) Channel Mode,
 174  * RGB Formatting Enabled for RGB666 output, disabled for RGB888 output
 175  * Regular watermark - when FIFO is 100% full,
 176  * Urgent watermark - when FIFO is 75% full
 177  */
 178
 179 #define EPPI_CONTROL            (0x20136E2E | SWAPEN)
 180
 181 static inline u16 get_eppi_clkdiv(u32 target_ppi_clk)
 182 {
 183         u32 sclk = get_sclk();
 184
 185         /* EPPI_CLK = (SCLK) / (2 * (EPPI_CLKDIV[15:0] + 1)) */
 186
 187         return (((sclk / target_ppi_clk) / 2) - 1);
 188 }
 189
 190 static void config_ppi(struct bfin_bf54xfb_info *fbi)
 191 {
 192
 193         u16 eppi_clkdiv = get_eppi_clkdiv(LCD_CLK);
 194
 195         bfin_write_EPPI0_FS1W_HBL(EPPI_FS1W_HBL);
 196         bfin_write_EPPI0_FS1P_AVPL(EPPI_FS1P_AVPL);
 197         bfin_write_EPPI0_FS2W_LVB(EPPI_FS2W_LVB);
 198         bfin_write_EPPI0_FS2P_LAVF(EPPI_FS2P_LAVF);
 199         bfin_write_EPPI0_CLIP(EPPI_CLIP);
 200
 201         bfin_write_EPPI0_FRAME(EPPI_FRAME);
 202         bfin_write_EPPI0_LINE(EPPI_LINE);
 203
 204         bfin_write_EPPI0_HCOUNT(EPPI_HCOUNT);
 205         bfin_write_EPPI0_HDELAY(EPPI_HDELAY);
 206         bfin_write_EPPI0_VCOUNT(EPPI_VCOUNT);
 207         bfin_write_EPPI0_VDELAY(EPPI_VDELAY);
 208
 209         bfin_write_EPPI0_CLKDIV(eppi_clkdiv);
 210
 211 /*
 212  * DLEN = 6 (24 bits for RGB888 out) or 5 (18 bits for RGB666 out)
 213  * RGB Formatting Enabled for RGB666 output, disabled for RGB888 output
 214  */
 215         if (outp_rgb666)
 216                 bfin_write_EPPI0_CONTROL((EPPI_CONTROL & ~DLENGTH) | DLEN_18 |
 217                                          RGB_FMT_EN);
 218         else
 219                 bfin_write_EPPI0_CONTROL(((EPPI_CONTROL & ~DLENGTH) | DLEN_24) &
 220                                          ~RGB_FMT_EN);
 221
 222
 223 }
 224
 225 static int config_dma(struct bfin_bf54xfb_info *fbi)
 226 {
 227
 228         set_dma_config(CH_EPPI0,
 229                        set_bfin_dma_config(DIR_READ, DMA_FLOW_AUTO,
 230                                            INTR_DISABLE, DIMENSION_2D,
 231                                            DATA_SIZE_32,
 232                                            DMA_NOSYNC_KEEP_DMA_BUF));
 233         set_dma_x_count(CH_EPPI0, (LCD_X_RES * LCD_BPP) / DMA_BUS_SIZE);
 234         set_dma_x_modify(CH_EPPI0, DMA_BUS_SIZE / 8);
 235         set_dma_y_count(CH_EPPI0, LCD_Y_RES);
 236         set_dma_y_modify(CH_EPPI0, DMA_BUS_SIZE / 8);
 237         set_dma_start_addr(CH_EPPI0, (unsigned long)fbi->fb_buffer);
 238
 239         return 0;
 240 }
 241
 242 static int request_ports(struct bfin_bf54xfb_info *fbi)
 243 {
 244
 245         u16 eppi_req_18[] = EPPI0_18;
 246         u16 disp = fbi->mach_info->disp;
 247
 248 <<<<<<< HEAD:drivers/video/bf54x-lq043fb.c
 249         if (gpio_request(disp, NULL)) {
 250 =======
 251         if (gpio_request(disp, DRIVER_NAME)) {
 252 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/video/bf54x-lq043fb.c
 253                 printk(KERN_ERR "Requesting GPIO %d faild\n", disp);
 254                 return -EFAULT;
 255         }
 256
 257         if (peripheral_request_list(eppi_req_18, DRIVER_NAME)) {
 258                 printk(KERN_ERR "Requesting Peripherals faild\n");
 259                 gpio_free(disp);
 260                 return -EFAULT;
 261         }
 262
 263         if (!outp_rgb666) {
 264
 265                 u16 eppi_req_24[] = EPPI0_24;
 266
 267                 if (peripheral_request_list(eppi_req_24, DRIVER_NAME)) {
 268                         printk(KERN_ERR "Requesting Peripherals faild\n");
 269                         peripheral_free_list(eppi_req_18);
 270                         gpio_free(disp);
 271                         return -EFAULT;
 272                 }
 273         }
 274
 275         gpio_direction_output(disp, 1);
 276
 277         return 0;
 278 }
 279
 280 static void free_ports(struct bfin_bf54xfb_info *fbi)
 281 {
 282
 283         u16 eppi_req_18[] = EPPI0_18;
 284
 285         gpio_free(fbi->mach_info->disp);
 286
 287         peripheral_free_list(eppi_req_18);
 288
 289         if (!outp_rgb666) {
 290                 u16 eppi_req_24[] = EPPI0_24;
 291                 peripheral_free_list(eppi_req_24);
 292         }
 293 }
 294
 295 static int bfin_bf54x_fb_open(struct fb_info *info, int user)
 296 {
 297         struct bfin_bf54xfb_info *fbi = info->par;
 298
 299         spin_lock(&fbi->lock);
 300         fbi->lq043_open_cnt++;
 301
 302         if (fbi->lq043_open_cnt <= 1) {
 303
 304                 bfin_write_EPPI0_CONTROL(0);
 305                 SSYNC();
 306
 307                 config_dma(fbi);
 308                 config_ppi(fbi);
 309
 310                 /* start dma */
 311                 enable_dma(CH_EPPI0);
 312                 bfin_write_EPPI0_CONTROL(bfin_read_EPPI0_CONTROL() | EPPI_EN);
 313         }
 314
 315         spin_unlock(&fbi->lock);
 316
 317         return 0;
 318 }
 319
 320 static int bfin_bf54x_fb_release(struct fb_info *info, int user)
 321 {
 322         struct bfin_bf54xfb_info *fbi = info->par;
 323
 324         spin_lock(&fbi->lock);
 325
 326         fbi->lq043_open_cnt--;
 327         fbi->lq043_mmap = 0;
 328
 329         if (fbi->lq043_open_cnt <= 0) {
 330
 331                 bfin_write_EPPI0_CONTROL(0);
 332                 SSYNC();
 333                 disable_dma(CH_EPPI0);
 334                 memset(fbi->fb_buffer, 0, info->fix.smem_len);
 335         }
 336
 337         spin_unlock(&fbi->lock);
 338
 339         return 0;
 340 }
 341
 342 static int bfin_bf54x_fb_check_var(struct fb_var_screeninfo *var,
 343                                    struct fb_info *info)
 344 {
 345
 346         if (var->bits_per_pixel != LCD_BPP) {
 347                 pr_debug("%s: depth not supported: %u BPP\n", __FUNCTION__,
 348                          var->bits_per_pixel);
 349                 return -EINVAL;
 350         }
 351
 352         if (info->var.xres != var->xres || info->var.yres != var->yres ||
 353             info->var.xres_virtual != var->xres_virtual ||
 354             info->var.yres_virtual != var->yres_virtual) {
 355                 pr_debug("%s: Resolution not supported: X%u x Y%u \n",
 356                          __FUNCTION__, var->xres, var->yres);
 357                 return -EINVAL;
 358         }
 359
 360         /*
 361          *  Memory limit
 362          */
 363
 364         if ((info->fix.line_length * var->yres_virtual) > info->fix.smem_len) {
 365                 pr_debug("%s: Memory Limit requested yres_virtual = %u\n",
 366                          __FUNCTION__, var->yres_virtual);
 367                 return -ENOMEM;
 368         }
 369
 370         return 0;
 371 }
 372
 373 static int bfin_bf54x_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
 374 {
 375
 376         struct bfin_bf54xfb_info *fbi = info->par;
 377
 378         if (fbi->lq043_mmap)
 379                 return -1;
 380
 381         spin_lock(&fbi->lock);
 382         fbi->lq043_mmap = 1;
 383         spin_unlock(&fbi->lock);
 384
 385         vma->vm_start = (unsigned long)(fbi->fb_buffer);
 386
 387         vma->vm_end = vma->vm_start + info->fix.smem_len;
 388         /* For those who don't understand how mmap works, go read
 389          *   Documentation/nommu-mmap.txt.
 390          * For those that do, you will know that the VM_MAYSHARE flag
 391          * must be set in the vma->vm_flags structure on noMMU
 392          *   Other flags can be set, and are documented in
 393          *   include/linux/mm.h
 394          */
 395         vma->vm_flags |= VM_MAYSHARE;
 396
 397         return 0;
 398 }
 399
 400 int bfin_bf54x_fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
 401 {
 402         if (nocursor)
 403                 return 0;
 404         else
 405                 return -EINVAL; /* just to force soft_cursor() call */
 406 }
 407
 408 static int bfin_bf54x_fb_setcolreg(u_int regno, u_int red, u_int green,
 409                                    u_int blue, u_int transp,
 410                                    struct fb_info *info)
 411 {
 412         if (regno >= BFIN_LCD_NBR_PALETTE_ENTRIES)
 413                 return -EINVAL;
 414
 415         if (info->var.grayscale) {
 416                 /* grayscale = 0.30*R + 0.59*G + 0.11*B */
 417                 red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
 418         }
 419
 420         if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
 421
 422                 u32 value;
 423                 /* Place color in the pseudopalette */
 424                 if (regno > 16)
 425                         return -EINVAL;
 426
 427                 red >>= (16 - info->var.red.length);
 428                 green >>= (16 - info->var.green.length);
 429                 blue >>= (16 - info->var.blue.length);
 430
 431                 value = (red << info->var.red.offset) |
 432                     (green << info->var.green.offset) |
 433                     (blue << info->var.blue.offset);
 434                 value &= 0xFFFFFF;
 435
 436                 ((u32 *) (info->pseudo_palette))[regno] = value;
 437
 438         }
 439
 440         return 0;
 441 }
 442
 443 static struct fb_ops bfin_bf54x_fb_ops = {
 444         .owner = THIS_MODULE,
 445         .fb_open = bfin_bf54x_fb_open,
 446         .fb_release = bfin_bf54x_fb_release,
 447         .fb_check_var = bfin_bf54x_fb_check_var,
 448         .fb_fillrect = cfb_fillrect,
 449         .fb_copyarea = cfb_copyarea,
 450         .fb_imageblit = cfb_imageblit,
 451         .fb_mmap = bfin_bf54x_fb_mmap,
 452         .fb_cursor = bfin_bf54x_fb_cursor,
 453         .fb_setcolreg = bfin_bf54x_fb_setcolreg,
 454 };
 455
 456 #ifndef NO_BL_SUPPORT
 457 static int bl_get_brightness(struct backlight_device *bd)
 458 {
 459         return 0;
 460 }
 461
 462 static struct backlight_ops bfin_lq043fb_bl_ops = {
 463         .get_brightness = bl_get_brightness,
 464 };
 465
 466 static struct backlight_device *bl_dev;
 467
 468 static int bfin_lcd_get_power(struct lcd_device *dev)
 469 {
 470         return 0;
 471 }
 472
 473 static int bfin_lcd_set_power(struct lcd_device *dev, int power)
 474 {
 475         return 0;
 476 }
 477
 478 static int bfin_lcd_get_contrast(struct lcd_device *dev)
 479 {
 480         return 0;
 481 }
 482
 483 static int bfin_lcd_set_contrast(struct lcd_device *dev, int contrast)
 484 {
 485
 486         return 0;
 487 }
 488
 489 static int bfin_lcd_check_fb(struct fb_info *fi)
 490 {
 491         if (!fi || (fi == &bfin_bf54x_fb))
 492                 return 1;
 493         return 0;
 494 }
 495
 496 static struct lcd_ops bfin_lcd_ops = {
 497         .get_power = bfin_lcd_get_power,
 498         .set_power = bfin_lcd_set_power,
 499         .get_contrast = bfin_lcd_get_contrast,
 500         .set_contrast = bfin_lcd_set_contrast,
 501         .check_fb = bfin_lcd_check_fb,
 502 };
 503
 504 static struct lcd_device *lcd_dev;
 505 #endif
 506
 507 static irqreturn_t bfin_bf54x_irq_error(int irq, void *dev_id)
 508 {
 509         /*struct bfin_bf54xfb_info *info = dev_id;*/
 510
 511         u16 status = bfin_read_EPPI0_STATUS();
 512
 513         bfin_write_EPPI0_STATUS(0xFFFF);
 514
 515         if (status) {
 516                 bfin_write_EPPI0_CONTROL(bfin_read_EPPI0_CONTROL() & ~EPPI_EN);
 517                 disable_dma(CH_EPPI0);
 518
 519                 /* start dma */
 520                 enable_dma(CH_EPPI0);
 521                 bfin_write_EPPI0_CONTROL(bfin_read_EPPI0_CONTROL() | EPPI_EN);
 522                 bfin_write_EPPI0_STATUS(0xFFFF);
 523         }
 524
 525         return IRQ_HANDLED;
 526 }
 527
 528 static int __init bfin_bf54x_probe(struct platform_device *pdev)
 529 {
 530         struct bfin_bf54xfb_info *info;
 531         struct fb_info *fbinfo;
 532         int ret;
 533
 534         printk(KERN_INFO DRIVER_NAME ": FrameBuffer initializing...\n");
 535
 536         if (request_dma(CH_EPPI0, "CH_EPPI0") < 0) {
 537                 printk(KERN_ERR DRIVER_NAME
 538                        ": couldn't request CH_EPPI0 DMA\n");
 539                 ret = -EFAULT;
 540                 goto out1;
 541         }
 542
 543         fbinfo =
 544             framebuffer_alloc(sizeof(struct bfin_bf54xfb_info), &pdev->dev);
 545         if (!fbinfo) {
 546                 ret = -ENOMEM;
 547                 goto out2;
 548         }
 549
 550         info = fbinfo->par;
 551         info->fb = fbinfo;
 552         info->dev = &pdev->dev;
 553
 554         platform_set_drvdata(pdev, fbinfo);
 555
 556         strcpy(fbinfo->fix.id, driver_name);
 557
 558         info->mach_info = pdev->dev.platform_data;
 559
 560         if (info->mach_info == NULL) {
 561                 dev_err(&pdev->dev,
 562                         "no platform data for lcd, cannot attach\n");
 563                 ret = -EINVAL;
 564                 goto out3;
 565         }
 566
 567         fbinfo->fix.type = FB_TYPE_PACKED_PIXELS;
 568         fbinfo->fix.type_aux = 0;
 569         fbinfo->fix.xpanstep = 0;
 570         fbinfo->fix.ypanstep = 0;
 571         fbinfo->fix.ywrapstep = 0;
 572         fbinfo->fix.accel = FB_ACCEL_NONE;
 573         fbinfo->fix.visual = FB_VISUAL_TRUECOLOR;
 574
 575         fbinfo->var.nonstd = 0;
 576         fbinfo->var.activate = FB_ACTIVATE_NOW;
 577         fbinfo->var.height = info->mach_info->height;
 578         fbinfo->var.width = info->mach_info->width;
 579         fbinfo->var.accel_flags = 0;
 580         fbinfo->var.vmode = FB_VMODE_NONINTERLACED;
 581
 582         fbinfo->fbops = &bfin_bf54x_fb_ops;
 583         fbinfo->flags = FBINFO_FLAG_DEFAULT;
 584
 585         fbinfo->var.xres = info->mach_info->xres.defval;
 586         fbinfo->var.xres_virtual = info->mach_info->xres.defval;
 587         fbinfo->var.yres = info->mach_info->yres.defval;
 588         fbinfo->var.yres_virtual = info->mach_info->yres.defval;
 589         fbinfo->var.bits_per_pixel = info->mach_info->bpp.defval;
 590
 591         fbinfo->var.upper_margin = 0;
 592         fbinfo->var.lower_margin = 0;
 593         fbinfo->var.vsync_len = 0;
 594
 595         fbinfo->var.left_margin = 0;
 596         fbinfo->var.right_margin = 0;
 597         fbinfo->var.hsync_len = 0;
 598
 599         fbinfo->var.red.offset = 16;
 600         fbinfo->var.green.offset = 8;
 601         fbinfo->var.blue.offset = 0;
 602         fbinfo->var.transp.offset = 0;
 603         fbinfo->var.red.length = 8;
 604         fbinfo->var.green.length = 8;
 605         fbinfo->var.blue.length = 8;
 606         fbinfo->var.transp.length = 0;
 607         fbinfo->fix.smem_len = info->mach_info->xres.max *
 608             info->mach_info->yres.max * info->mach_info->bpp.max / 8;
 609
 610         fbinfo->fix.line_length = fbinfo->var.xres_virtual *
 611             fbinfo->var.bits_per_pixel / 8;
 612
 613         info->fb_buffer =
 614             dma_alloc_coherent(NULL, fbinfo->fix.smem_len, &info->dma_handle,
 615                                GFP_KERNEL);
 616
 617         if (NULL == info->fb_buffer) {
 618                 printk(KERN_ERR DRIVER_NAME
 619                        ": couldn't allocate dma buffer.\n");
 620                 ret = -ENOMEM;
 621                 goto out3;
 622         }
 623
 624         memset(info->fb_buffer, 0, fbinfo->fix.smem_len);
 625
 626         fbinfo->screen_base = (void *)info->fb_buffer;
 627         fbinfo->fix.smem_start = (int)info->fb_buffer;
 628
 629         fbinfo->fbops = &bfin_bf54x_fb_ops;
 630
 631         fbinfo->pseudo_palette = kmalloc(sizeof(u32) * 16, GFP_KERNEL);
 632         if (!fbinfo->pseudo_palette) {
 633                 printk(KERN_ERR DRIVER_NAME
 634                        "Fail to allocate pseudo_palette\n");
 635
 636                 ret = -ENOMEM;
 637                 goto out4;
 638         }
 639
 640         memset(fbinfo->pseudo_palette, 0, sizeof(u32) * 16);
 641
 642         if (fb_alloc_cmap(&fbinfo->cmap, BFIN_LCD_NBR_PALETTE_ENTRIES, 0)
 643             < 0) {
 644                 printk(KERN_ERR DRIVER_NAME
 645                        "Fail to allocate colormap (%d entries)\n",
 646                        BFIN_LCD_NBR_PALETTE_ENTRIES);
 647                 ret = -EFAULT;
 648                 goto out5;
 649         }
 650
 651         if (request_ports(info)) {
 652                 printk(KERN_ERR DRIVER_NAME ": couldn't request gpio port.\n");
 653                 ret = -EFAULT;
 654                 goto out6;
 655         }
 656
 657         info->irq = platform_get_irq(pdev, 0);
 658         if (info->irq < 0) {
 659                 ret = -EINVAL;
 660                 goto out7;
 661         }
 662
 663         if (request_irq(info->irq, (void *)bfin_bf54x_irq_error, IRQF_DISABLED,
 664                         "PPI ERROR", info) < 0) {
 665                 printk(KERN_ERR DRIVER_NAME
 666                        ": unable to request PPI ERROR IRQ\n");
 667                 ret = -EFAULT;
 668                 goto out7;
 669         }
 670
 671         if (register_framebuffer(fbinfo) < 0) {
 672                 printk(KERN_ERR DRIVER_NAME
 673                        ": unable to register framebuffer.\n");
 674                 ret = -EINVAL;
 675                 goto out8;
 676         }
 677 #ifndef NO_BL_SUPPORT
 678         bl_dev =
 679             backlight_device_register("bf54x-bl", NULL, NULL,
 680                                       &bfin_lq043fb_bl_ops);
 681         bl_dev->props.max_brightness = 255;
 682
 683 <<<<<<< HEAD:drivers/video/bf54x-lq043fb.c
 684         lcd_dev = lcd_device_register(DRIVER_NAME, NULL, &bfin_lcd_ops);
 685 =======
 686         lcd_dev = lcd_device_register(DRIVER_NAME, &pdev->dev, NULL, &bfin_lcd_ops);
 687 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/video/bf54x-lq043fb.c
 688         lcd_dev->props.max_contrast = 255, printk(KERN_INFO "Done.\n");
 689 #endif
 690
 691         return 0;
 692
 693 out8:
 694         free_irq(info->irq, info);
 695 out7:
 696         free_ports(info);
 697 out6:
 698         fb_dealloc_cmap(&fbinfo->cmap);
 699 out5:
 700         kfree(fbinfo->pseudo_palette);
 701 out4:
 702         dma_free_coherent(NULL, fbinfo->fix.smem_len, info->fb_buffer,
 703                           info->dma_handle);
 704 out3:
 705         framebuffer_release(fbinfo);
 706 out2:
 707         free_dma(CH_EPPI0);
 708 out1:
 709         platform_set_drvdata(pdev, NULL);
 710
 711         return ret;
 712 }
 713
 714 static int bfin_bf54x_remove(struct platform_device *pdev)
 715 {
 716
 717         struct fb_info *fbinfo = platform_get_drvdata(pdev);
 718         struct bfin_bf54xfb_info *info = fbinfo->par;
 719
 720         free_dma(CH_EPPI0);
 721         free_irq(info->irq, info);
 722
 723         if (info->fb_buffer != NULL)
 724                 dma_free_coherent(NULL, fbinfo->fix.smem_len, info->fb_buffer,
 725                                   info->dma_handle);
 726
 727         kfree(fbinfo->pseudo_palette);
 728         fb_dealloc_cmap(&fbinfo->cmap);
 729
 730 #ifndef NO_BL_SUPPORT
 731         lcd_device_unregister(lcd_dev);
 732         backlight_device_unregister(bl_dev);
 733 #endif
 734
 735         unregister_framebuffer(fbinfo);
 736
 737         free_ports(info);
 738
 739         printk(KERN_INFO DRIVER_NAME ": Unregister LCD driver.\n");
 740
 741         return 0;
 742 }
 743
 744 #ifdef CONFIG_PM
 745 static int bfin_bf54x_suspend(struct platform_device *pdev, pm_message_t state)
 746 {
 747         struct fb_info *fbinfo = platform_get_drvdata(pdev);
 748         struct bfin_bf54xfb_info *info = fbinfo->par;
 749
 750         bfin_write_EPPI0_CONTROL(bfin_read_EPPI0_CONTROL() & ~EPPI_EN);
 751         disable_dma(CH_EPPI0);
 752         bfin_write_EPPI0_STATUS(0xFFFF);
 753
 754         return 0;
 755 }
 756
 757 static int bfin_bf54x_resume(struct platform_device *pdev)
 758 {
 759         struct fb_info *fbinfo = platform_get_drvdata(pdev);
 760         struct bfin_bf54xfb_info *info = fbinfo->par;
 761
 762         enable_dma(CH_EPPI0);
 763         bfin_write_EPPI0_CONTROL(bfin_read_EPPI0_CONTROL() | EPPI_EN);
 764
 765         return 0;
 766 }
 767 #else
 768 #define bfin_bf54x_suspend      NULL
 769 #define bfin_bf54x_resume       NULL
 770 #endif
 771
 772 static struct platform_driver bfin_bf54x_driver = {
 773         .probe = bfin_bf54x_probe,
 774         .remove = bfin_bf54x_remove,
 775         .suspend = bfin_bf54x_suspend,
 776         .resume = bfin_bf54x_resume,
 777         .driver = {
 778                    .name = DRIVER_NAME,
 779                    .owner = THIS_MODULE,
 780                    },
 781 };
 782
 783 static int __devinit bfin_bf54x_driver_init(void)
 784 {
 785         return platform_driver_register(&bfin_bf54x_driver);
 786 }
 787
 788 static void __exit bfin_bf54x_driver_cleanup(void)
 789 {
 790         platform_driver_unregister(&bfin_bf54x_driver);
 791 }
 792
 793 MODULE_DESCRIPTION("Blackfin BF54x TFT LCD Driver");
 794 MODULE_LICENSE("GPL");
 795
 796 module_init(bfin_bf54x_driver_init);
 797 module_exit(bfin_bf54x_driver_cleanup);