uboot/drivers/video/mb862xx.c
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   1/*
   2 * (C) Copyright 2007
   3 * DENX Software Engineering, Anatolij Gustschin, agust@denx.de
   4 *
   5 * See file CREDITS for list of people who contributed to this
   6 * project.
   7 *
   8 * This program is free software; you can redistribute it and/or
   9 * modify it under the terms of the GNU General Public License as
  10 * published by the Free Software Foundation; either version 2 of
  11 * the License, or (at your option) any later version.
  12 *
  13 * This program is distributed in the hope that it will be useful,
  14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 * GNU General Public License for more details.
  17 *
  18 * You should have received a copy of the GNU General Public License
  19 * along with this program; if not, write to the Free Software
  20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21 * MA 02111-1307 USA
  22 */
  23
  24/*
  25 * mb862xx.c - Graphic interface for Fujitsu CoralP/Lime
  26 * PCI and video mode code was derived from smiLynxEM driver.
  27 */
  28
  29#include <common.h>
  30
  31#include <asm/io.h>
  32#include <pci.h>
  33#include <video_fb.h>
  34#include "videomodes.h"
  35#include <mb862xx.h>
  36
  37#if defined(CONFIG_POST)
  38#include <post.h>
  39#endif
  40
  41/*
  42 * Graphic Device
  43 */
  44GraphicDevice mb862xx;
  45
  46/*
  47 * 32MB external RAM - 256K Chip MMIO = 0x1FC0000 ;
  48 */
  49#define VIDEO_MEM_SIZE  0x01FC0000
  50
  51#if defined(CONFIG_PCI)
  52#if defined(CONFIG_VIDEO_CORALP)
  53
  54static struct pci_device_id supported[] = {
  55        { PCI_VENDOR_ID_FUJITSU, PCI_DEVICE_ID_CORAL_P },
  56        { PCI_VENDOR_ID_FUJITSU, PCI_DEVICE_ID_CORAL_PA },
  57        { }
  58};
  59
  60/* Internal clock frequency divider table, index is mode number */
  61unsigned int fr_div[] = { 0x00000f00, 0x00000900, 0x00000500 };
  62#endif
  63#endif
  64
  65#if defined(CONFIG_VIDEO_CORALP)
  66#define rd_io           in32r
  67#define wr_io           out32r
  68#else
  69#define rd_io(addr)     in_be32((volatile unsigned *)(addr))
  70#define wr_io(addr, val)        out_be32((volatile unsigned *)(addr), (val))
  71#endif
  72
  73#define HOST_RD_REG(off)        rd_io((dev->frameAdrs + GC_HOST_BASE + (off)))
  74#define HOST_WR_REG(off, val)   wr_io((dev->frameAdrs + GC_HOST_BASE + (off)), \
  75                                      (val))
  76#define DISP_RD_REG(off)        rd_io((dev->frameAdrs + GC_DISP_BASE + (off)))
  77#define DISP_WR_REG(off, val)   wr_io((dev->frameAdrs + GC_DISP_BASE + (off)), \
  78                                      (val))
  79#define DE_RD_REG(off)          rd_io((dev->dprBase + (off)))
  80#define DE_WR_REG(off, val)     wr_io((dev->dprBase + (off)), (val))
  81
  82#if defined(CONFIG_VIDEO_CORALP)
  83#define DE_WR_FIFO(val)         wr_io((dev->dprBase + (GC_GEO_FIFO)), (val))
  84#else
  85#define DE_WR_FIFO(val)         wr_io((dev->dprBase + (GC_FIFO)), (val))
  86#endif
  87
  88#define L0PAL_WR_REG(idx, val)  wr_io((dev->frameAdrs + \
  89                                       (GC_DISP_BASE | GC_L0PAL0) + \
  90                                       ((idx) << 2)), (val))
  91
  92#if defined(CONFIG_VIDEO_MB862xx_ACCEL)
  93static void gdc_sw_reset (void)
  94{
  95        GraphicDevice *dev = &mb862xx;
  96
  97        HOST_WR_REG (GC_SRST, 0x1);
  98        udelay (500);
  99        video_hw_init ();
 100}
 101
 102
 103static void de_wait (void)
 104{
 105        GraphicDevice *dev = &mb862xx;
 106        int lc = 0x10000;
 107
 108        /*
 109         * Sync with software writes to framebuffer,
 110         * try to reset if engine locked
 111         */
 112        while (DE_RD_REG (GC_CTR) & 0x00000131)
 113                if (lc-- < 0) {
 114                        gdc_sw_reset ();
 115                        puts ("gdc reset done after drawing engine lock.\n");
 116                        break;
 117                }
 118}
 119
 120static void de_wait_slots (int slots)
 121{
 122        GraphicDevice *dev = &mb862xx;
 123        int lc = 0x10000;
 124
 125        /* Wait for free fifo slots */
 126        while (DE_RD_REG (GC_IFCNT) < slots)
 127                if (lc-- < 0) {
 128                        gdc_sw_reset ();
 129                        puts ("gdc reset done after drawing engine lock.\n");
 130                        break;
 131                }
 132}
 133#endif
 134
 135#if !defined(CONFIG_VIDEO_CORALP)
 136static void board_disp_init (void)
 137{
 138        GraphicDevice *dev = &mb862xx;
 139        const gdc_regs *regs = board_get_regs ();
 140
 141        while (regs->index) {
 142                DISP_WR_REG (regs->index, regs->value);
 143                regs++;
 144        }
 145}
 146#endif
 147
 148/*
 149 * Init drawing engine if accel enabled.
 150 * Also clears visible framebuffer.
 151 */
 152static void de_init (void)
 153{
 154        GraphicDevice *dev = &mb862xx;
 155#if defined(CONFIG_VIDEO_MB862xx_ACCEL)
 156        int cf = (dev->gdfBytesPP == 1) ? 0x0000 : 0x8000;
 157
 158        dev->dprBase = dev->frameAdrs + GC_DRAW_BASE;
 159
 160        /* Setup mode and fbbase, xres, fg, bg */
 161        de_wait_slots (2);
 162        DE_WR_FIFO (0xf1010108);
 163        DE_WR_FIFO (cf | 0x0300);
 164        DE_WR_REG (GC_FBR, 0x0);
 165        DE_WR_REG (GC_XRES, dev->winSizeX);
 166        DE_WR_REG (GC_FC, 0x0);
 167        DE_WR_REG (GC_BC, 0x0);
 168        /* Reset clipping */
 169        DE_WR_REG (GC_CXMIN, 0x0);
 170        DE_WR_REG (GC_CXMAX, dev->winSizeX);
 171        DE_WR_REG (GC_CYMIN, 0x0);
 172        DE_WR_REG (GC_CYMAX, dev->winSizeY);
 173
 174        /* Clear framebuffer using drawing engine */
 175        de_wait_slots (3);
 176        DE_WR_FIFO (0x09410000);
 177        DE_WR_FIFO (0x00000000);
 178        DE_WR_FIFO (dev->winSizeY << 16 | dev->winSizeX);
 179        /* sync with SW access to framebuffer */
 180        de_wait ();
 181#else
 182        unsigned int i, *p;
 183
 184        i = dev->winSizeX * dev->winSizeY;
 185        p = (unsigned int *)dev->frameAdrs;
 186        while (i--)
 187                *p++ = 0;
 188#endif
 189}
 190
 191#if defined(CONFIG_VIDEO_CORALP)
 192/* use CCF and MMR parameters for Coral-P Eval. Board as default */
 193#ifndef CONFIG_SYS_MB862xx_CCF
 194#define CONFIG_SYS_MB862xx_CCF  0x00090000
 195#endif
 196#ifndef CONFIG_SYS_MB862xx_MMR
 197#define CONFIG_SYS_MB862xx_MMR  0x11d7fa13
 198#endif
 199
 200unsigned int pci_video_init (void)
 201{
 202        GraphicDevice *dev = &mb862xx;
 203        pci_dev_t devbusfn;
 204        u16 device;
 205
 206        if ((devbusfn = pci_find_devices (supported, 0)) < 0) {
 207                puts("controller not present\n");
 208                return 0;
 209        }
 210
 211        /* PCI setup */
 212        pci_write_config_dword (devbusfn, PCI_COMMAND,
 213                                (PCI_COMMAND_MEMORY | PCI_COMMAND_IO));
 214        pci_read_config_dword (devbusfn, PCI_BASE_ADDRESS_0, &dev->frameAdrs);
 215        dev->frameAdrs = pci_mem_to_phys (devbusfn, dev->frameAdrs);
 216
 217        if (dev->frameAdrs == 0) {
 218                puts ("PCI config: failed to get base address\n");
 219                return 0;
 220        }
 221
 222        dev->pciBase = dev->frameAdrs;
 223
 224        puts("Coral-");
 225
 226        pci_read_config_word(devbusfn, PCI_DEVICE_ID, &device);
 227        switch (device) {
 228        case PCI_DEVICE_ID_CORAL_P:
 229                puts("P\n");
 230                break;
 231        case PCI_DEVICE_ID_CORAL_PA:
 232                puts("PA\n");
 233                break;
 234        default:
 235                puts("Unknown\n");
 236                return 0;
 237        }
 238
 239        /* Setup clocks and memory mode for Coral-P(A) */
 240        HOST_WR_REG(GC_CCF, CONFIG_SYS_MB862xx_CCF);
 241        udelay (200);
 242        HOST_WR_REG(GC_MMR, CONFIG_SYS_MB862xx_MMR);
 243        udelay (100);
 244        return dev->frameAdrs;
 245}
 246
 247unsigned int card_init (void)
 248{
 249        GraphicDevice *dev = &mb862xx;
 250        unsigned int cf, videomode, div = 0;
 251        unsigned long t1, hsync, vsync;
 252        char *penv;
 253        int tmp, i, bpp;
 254        struct ctfb_res_modes *res_mode;
 255        struct ctfb_res_modes var_mode;
 256
 257        memset (dev, 0, sizeof (GraphicDevice));
 258
 259        if (!pci_video_init ())
 260                return 0;
 261
 262        tmp = 0;
 263        videomode = 0x310;
 264        /* get video mode via environment */
 265        if ((penv = getenv ("videomode")) != NULL) {
 266                /* decide if it is a string */
 267                if (penv[0] <= '9') {
 268                        videomode = (int) simple_strtoul (penv, NULL, 16);
 269                        tmp = 1;
 270                }
 271        } else {
 272                tmp = 1;
 273        }
 274
 275        if (tmp) {
 276                /* parameter are vesa modes, search params */
 277                for (i = 0; i < VESA_MODES_COUNT; i++) {
 278                        if (vesa_modes[i].vesanr == videomode)
 279                                break;
 280                }
 281                if (i == VESA_MODES_COUNT) {
 282                        printf ("\tno VESA Mode found, fallback to mode 0x%x\n",
 283                                videomode);
 284                        i = 0;
 285                }
 286                res_mode = (struct ctfb_res_modes *)
 287                           &res_mode_init[vesa_modes[i].resindex];
 288                if (vesa_modes[i].resindex > 2) {
 289                        puts ("\tUnsupported resolution, using default\n");
 290                        bpp = vesa_modes[1].bits_per_pixel;
 291                        div = fr_div[1];
 292                }
 293                bpp = vesa_modes[i].bits_per_pixel;
 294                div = fr_div[vesa_modes[i].resindex];
 295        } else {
 296                res_mode = (struct ctfb_res_modes *) &var_mode;
 297                bpp = video_get_params (res_mode, penv);
 298        }
 299
 300        /* calculate hsync and vsync freq (info only) */
 301        t1 = (res_mode->left_margin + res_mode->xres +
 302              res_mode->right_margin + res_mode->hsync_len) / 8;
 303        t1 *= 8;
 304        t1 *= res_mode->pixclock;
 305        t1 /= 1000;
 306        hsync = 1000000000L / t1;
 307        t1 *= (res_mode->upper_margin + res_mode->yres +
 308               res_mode->lower_margin + res_mode->vsync_len);
 309        t1 /= 1000;
 310        vsync = 1000000000L / t1;
 311
 312        /* fill in Graphic device struct */
 313        sprintf (dev->modeIdent, "%dx%dx%d %ldkHz %ldHz", res_mode->xres,
 314                 res_mode->yres, bpp, (hsync / 1000), (vsync / 1000));
 315        printf ("\t%s\n", dev->modeIdent);
 316        dev->winSizeX = res_mode->xres;
 317        dev->winSizeY = res_mode->yres;
 318        dev->memSize = VIDEO_MEM_SIZE;
 319
 320        switch (bpp) {
 321        case 8:
 322                dev->gdfIndex = GDF__8BIT_INDEX;
 323                dev->gdfBytesPP = 1;
 324                break;
 325        case 15:
 326        case 16:
 327                dev->gdfIndex = GDF_15BIT_555RGB;
 328                dev->gdfBytesPP = 2;
 329                break;
 330        default:
 331                printf ("\t%d bpp configured, but only 8,15 and 16 supported\n",
 332                        bpp);
 333                puts ("\tfallback to 15bpp\n");
 334                dev->gdfIndex = GDF_15BIT_555RGB;
 335                dev->gdfBytesPP = 2;
 336        }
 337
 338        /* Setup dot clock (internal pll, division rate) */
 339        DISP_WR_REG (GC_DCM1, div);
 340        /* L0 init */
 341        cf = (dev->gdfBytesPP == 1) ? 0x00000000 : 0x80000000;
 342        DISP_WR_REG (GC_L0M, ((dev->winSizeX * dev->gdfBytesPP) / 64) << 16 |
 343                             (dev->winSizeY - 1) | cf);
 344        DISP_WR_REG (GC_L0OA0, 0x0);
 345        DISP_WR_REG (GC_L0DA0, 0x0);
 346        DISP_WR_REG (GC_L0DY_L0DX, 0x0);
 347        DISP_WR_REG (GC_L0EM, 0x0);
 348        DISP_WR_REG (GC_L0WY_L0WX, 0x0);
 349        DISP_WR_REG (GC_L0WH_L0WW, (dev->winSizeY - 1) << 16 | dev->winSizeX);
 350
 351        /* Display timing init */
 352        DISP_WR_REG (GC_HTP_A, (dev->winSizeX +
 353                                res_mode->left_margin +
 354                                res_mode->right_margin +
 355                                res_mode->hsync_len - 1) << 16);
 356        DISP_WR_REG (GC_HDB_HDP_A, (dev->winSizeX - 1) << 16 |
 357                                   (dev->winSizeX - 1));
 358        DISP_WR_REG (GC_VSW_HSW_HSP_A,  (res_mode->vsync_len - 1) << 24 |
 359                                        (res_mode->hsync_len - 1) << 16 |
 360                                        (dev->winSizeX +
 361                                         res_mode->right_margin - 1));
 362        DISP_WR_REG (GC_VTR_A, (dev->winSizeY + res_mode->lower_margin +
 363                                res_mode->upper_margin +
 364                                res_mode->vsync_len - 1) << 16);
 365        DISP_WR_REG (GC_VDP_VSP_A, (dev->winSizeY-1) << 16 |
 366                                   (dev->winSizeY +
 367                                    res_mode->lower_margin - 1));
 368        DISP_WR_REG (GC_WY_WX, 0x0);
 369        DISP_WR_REG (GC_WH_WW, dev->winSizeY << 16 | dev->winSizeX);
 370        /* Display enable, L0 layer */
 371        DISP_WR_REG (GC_DCM1, 0x80010000 | div);
 372
 373        return dev->frameAdrs;
 374}
 375#endif
 376
 377
 378#if !defined(CONFIG_VIDEO_CORALP)
 379int mb862xx_probe(unsigned int addr)
 380{
 381        GraphicDevice *dev = &mb862xx;
 382        unsigned int reg;
 383
 384        dev->frameAdrs = addr;
 385        dev->dprBase = dev->frameAdrs + GC_DRAW_BASE;
 386
 387        /* Try to access GDC ID/Revision registers */
 388        reg = HOST_RD_REG (GC_CID);
 389        reg = HOST_RD_REG (GC_CID);
 390        if (reg == 0x303) {
 391                reg = DE_RD_REG(GC_REV);
 392                reg = DE_RD_REG(GC_REV);
 393                if ((reg & ~0xff) == 0x20050100)
 394                        return MB862XX_TYPE_LIME;
 395        }
 396
 397        return 0;
 398}
 399#endif
 400
 401void *video_hw_init (void)
 402{
 403        GraphicDevice *dev = &mb862xx;
 404
 405        puts ("Video: Fujitsu ");
 406
 407        memset (dev, 0, sizeof (GraphicDevice));
 408
 409#if defined(CONFIG_VIDEO_CORALP)
 410        if (card_init () == 0)
 411                return NULL;
 412#else
 413        /*
 414         * Preliminary init of the onboard graphic controller,
 415         * retrieve base address
 416         */
 417        if ((dev->frameAdrs = board_video_init ()) == 0) {
 418                puts ("Controller not found!\n");
 419                return NULL;
 420        } else {
 421                puts ("Lime\n");
 422
 423                /* Set Change of Clock Frequency Register */
 424                HOST_WR_REG (GC_CCF, CONFIG_SYS_MB862xx_CCF);
 425                /* Delay required */
 426                udelay(300);
 427                /* Set Memory I/F Mode Register) */
 428                HOST_WR_REG (GC_MMR, CONFIG_SYS_MB862xx_MMR);
 429        }
 430#endif
 431
 432        de_init ();
 433
 434#if !defined(CONFIG_VIDEO_CORALP)
 435        board_disp_init ();
 436#endif
 437
 438#if (defined(CONFIG_LWMON5) || \
 439     defined(CONFIG_SOCRATES)) && !(CONFIG_POST & CONFIG_SYS_POST_SYSMON)
 440        /* Lamp on */
 441        board_backlight_switch (1);
 442#endif
 443
 444        return dev;
 445}
 446
 447/*
 448 * Set a RGB color in the LUT
 449 */
 450void video_set_lut (unsigned int index, unsigned char r,
 451                    unsigned char g, unsigned char b)
 452{
 453        GraphicDevice *dev = &mb862xx;
 454
 455        L0PAL_WR_REG (index, (r << 16) | (g << 8) | (b));
 456}
 457
 458#if defined(CONFIG_VIDEO_MB862xx_ACCEL)
 459/*
 460 * Drawing engine Fill and BitBlt screen region
 461 */
 462void video_hw_rectfill (unsigned int bpp, unsigned int dst_x,
 463                        unsigned int dst_y, unsigned int dim_x,
 464                        unsigned int dim_y, unsigned int color)
 465{
 466        GraphicDevice *dev = &mb862xx;
 467
 468        de_wait_slots (3);
 469        DE_WR_REG (GC_FC, color);
 470        DE_WR_FIFO (0x09410000);
 471        DE_WR_FIFO ((dst_y << 16) | dst_x);
 472        DE_WR_FIFO ((dim_y << 16) | dim_x);
 473        de_wait ();
 474}
 475
 476void video_hw_bitblt (unsigned int bpp, unsigned int src_x,
 477                      unsigned int src_y, unsigned int dst_x,
 478                      unsigned int dst_y, unsigned int width,
 479                      unsigned int height)
 480{
 481        GraphicDevice *dev = &mb862xx;
 482        unsigned int ctrl = 0x0d000000L;
 483
 484        if (src_x >= dst_x && src_y >= dst_y)
 485                ctrl |= 0x00440000L;
 486        else if (src_x >= dst_x && src_y <= dst_y)
 487                ctrl |= 0x00460000L;
 488        else if (src_x <= dst_x && src_y >= dst_y)
 489                ctrl |= 0x00450000L;
 490        else
 491                ctrl |= 0x00470000L;
 492
 493        de_wait_slots (4);
 494        DE_WR_FIFO (ctrl);
 495        DE_WR_FIFO ((src_y << 16) | src_x);
 496        DE_WR_FIFO ((dst_y << 16) | dst_x);
 497        DE_WR_FIFO ((height << 16) | width);
 498        de_wait (); /* sync */
 499}
 500#endif
 501