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 * SPDX-License-Identifier:     GPL-2.0+
   6 */
   7
   8/*
   9 * mb862xx.c - Graphic interface for Fujitsu CoralP/Lime
  10 * PCI and video mode code was derived from smiLynxEM driver.
  11 */
  12
  13#include <common.h>
  14
  15#include <asm/io.h>
  16#include <pci.h>
  17#include <video_fb.h>
  18#include "videomodes.h"
  19#include <mb862xx.h>
  20
  21#if defined(CONFIG_POST)
  22#include <post.h>
  23#endif
  24
  25/*
  26 * Graphic Device
  27 */
  28GraphicDevice mb862xx;
  29
  30/*
  31 * 32MB external RAM - 256K Chip MMIO = 0x1FC0000 ;
  32 */
  33#define VIDEO_MEM_SIZE  0x01FC0000
  34
  35#if defined(CONFIG_PCI)
  36#if defined(CONFIG_VIDEO_CORALP)
  37
  38static struct pci_device_id supported[] = {
  39        { PCI_VENDOR_ID_FUJITSU, PCI_DEVICE_ID_CORAL_P },
  40        { PCI_VENDOR_ID_FUJITSU, PCI_DEVICE_ID_CORAL_PA },
  41        { }
  42};
  43
  44/* Internal clock frequency divider table, index is mode number */
  45unsigned int fr_div[] = { 0x00000f00, 0x00000900, 0x00000500 };
  46#endif
  47#endif
  48
  49#if defined(CONFIG_VIDEO_CORALP)
  50#define rd_io           in32r
  51#define wr_io           out32r
  52#else
  53#define rd_io(addr)     in_be32((volatile unsigned *)(addr))
  54#define wr_io(addr, val)        out_be32((volatile unsigned *)(addr), (val))
  55#endif
  56
  57#define HOST_RD_REG(off)        rd_io((dev->frameAdrs + GC_HOST_BASE + (off)))
  58#define HOST_WR_REG(off, val)   wr_io((dev->frameAdrs + GC_HOST_BASE + (off)), \
  59                                      (val))
  60#define DISP_RD_REG(off)        rd_io((dev->frameAdrs + GC_DISP_BASE + (off)))
  61#define DISP_WR_REG(off, val)   wr_io((dev->frameAdrs + GC_DISP_BASE + (off)), \
  62                                      (val))
  63#define DE_RD_REG(off)          rd_io((dev->dprBase + (off)))
  64#define DE_WR_REG(off, val)     wr_io((dev->dprBase + (off)), (val))
  65
  66#if defined(CONFIG_VIDEO_CORALP)
  67#define DE_WR_FIFO(val)         wr_io((dev->dprBase + (GC_GEO_FIFO)), (val))
  68#else
  69#define DE_WR_FIFO(val)         wr_io((dev->dprBase + (GC_FIFO)), (val))
  70#endif
  71
  72#define L0PAL_WR_REG(idx, val)  wr_io((dev->frameAdrs + \
  73                                       (GC_DISP_BASE | GC_L0PAL0) + \
  74                                       ((idx) << 2)), (val))
  75
  76#if defined(CONFIG_VIDEO_MB862xx_ACCEL)
  77static void gdc_sw_reset (void)
  78{
  79        GraphicDevice *dev = &mb862xx;
  80
  81        HOST_WR_REG (GC_SRST, 0x1);
  82        udelay (500);
  83        video_hw_init ();
  84}
  85
  86
  87static void de_wait (void)
  88{
  89        GraphicDevice *dev = &mb862xx;
  90        int lc = 0x10000;
  91
  92        /*
  93         * Sync with software writes to framebuffer,
  94         * try to reset if engine locked
  95         */
  96        while (DE_RD_REG (GC_CTR) & 0x00000131)
  97                if (lc-- < 0) {
  98                        gdc_sw_reset ();
  99                        puts ("gdc reset done after drawing engine lock.\n");
 100                        break;
 101                }
 102}
 103
 104static void de_wait_slots (int slots)
 105{
 106        GraphicDevice *dev = &mb862xx;
 107        int lc = 0x10000;
 108
 109        /* Wait for free fifo slots */
 110        while (DE_RD_REG (GC_IFCNT) < slots)
 111                if (lc-- < 0) {
 112                        gdc_sw_reset ();
 113                        puts ("gdc reset done after drawing engine lock.\n");
 114                        break;
 115                }
 116}
 117#endif
 118
 119#if !defined(CONFIG_VIDEO_CORALP)
 120static void board_disp_init (void)
 121{
 122        GraphicDevice *dev = &mb862xx;
 123        const gdc_regs *regs = board_get_regs ();
 124
 125        while (regs->index) {
 126                DISP_WR_REG (regs->index, regs->value);
 127                regs++;
 128        }
 129}
 130#endif
 131
 132/*
 133 * Init drawing engine if accel enabled.
 134 * Also clears visible framebuffer.
 135 */
 136static void de_init (void)
 137{
 138        GraphicDevice *dev = &mb862xx;
 139#if defined(CONFIG_VIDEO_MB862xx_ACCEL)
 140        int cf = (dev->gdfBytesPP == 1) ? 0x0000 : 0x8000;
 141
 142        dev->dprBase = dev->frameAdrs + GC_DRAW_BASE;
 143
 144        /* Setup mode and fbbase, xres, fg, bg */
 145        de_wait_slots (2);
 146        DE_WR_FIFO (0xf1010108);
 147        DE_WR_FIFO (cf | 0x0300);
 148        DE_WR_REG (GC_FBR, 0x0);
 149        DE_WR_REG (GC_XRES, dev->winSizeX);
 150        DE_WR_REG (GC_FC, 0x0);
 151        DE_WR_REG (GC_BC, 0x0);
 152        /* Reset clipping */
 153        DE_WR_REG (GC_CXMIN, 0x0);
 154        DE_WR_REG (GC_CXMAX, dev->winSizeX);
 155        DE_WR_REG (GC_CYMIN, 0x0);
 156        DE_WR_REG (GC_CYMAX, dev->winSizeY);
 157
 158        /* Clear framebuffer using drawing engine */
 159        de_wait_slots (3);
 160        DE_WR_FIFO (0x09410000);
 161        DE_WR_FIFO (0x00000000);
 162        DE_WR_FIFO (dev->winSizeY << 16 | dev->winSizeX);
 163        /* sync with SW access to framebuffer */
 164        de_wait ();
 165#else
 166        unsigned int i, *p;
 167
 168        i = dev->winSizeX * dev->winSizeY;
 169        p = (unsigned int *)dev->frameAdrs;
 170        while (i--)
 171                *p++ = 0;
 172#endif
 173}
 174
 175#if defined(CONFIG_VIDEO_CORALP)
 176/* use CCF and MMR parameters for Coral-P Eval. Board as default */
 177#ifndef CONFIG_SYS_MB862xx_CCF
 178#define CONFIG_SYS_MB862xx_CCF  0x00090000
 179#endif
 180#ifndef CONFIG_SYS_MB862xx_MMR
 181#define CONFIG_SYS_MB862xx_MMR  0x11d7fa13
 182#endif
 183
 184unsigned int pci_video_init (void)
 185{
 186        GraphicDevice *dev = &mb862xx;
 187        pci_dev_t devbusfn;
 188        u16 device;
 189
 190        if ((devbusfn = pci_find_devices (supported, 0)) < 0) {
 191                puts("controller not present\n");
 192                return 0;
 193        }
 194
 195        /* PCI setup */
 196        pci_write_config_dword (devbusfn, PCI_COMMAND,
 197                                (PCI_COMMAND_MEMORY | PCI_COMMAND_IO));
 198        pci_read_config_dword (devbusfn, PCI_BASE_ADDRESS_0, &dev->frameAdrs);
 199        dev->frameAdrs = pci_mem_to_phys (devbusfn, dev->frameAdrs);
 200
 201        if (dev->frameAdrs == 0) {
 202                puts ("PCI config: failed to get base address\n");
 203                return 0;
 204        }
 205
 206        dev->pciBase = dev->frameAdrs;
 207
 208        puts("Coral-");
 209
 210        pci_read_config_word(devbusfn, PCI_DEVICE_ID, &device);
 211        switch (device) {
 212        case PCI_DEVICE_ID_CORAL_P:
 213                puts("P\n");
 214                break;
 215        case PCI_DEVICE_ID_CORAL_PA:
 216                puts("PA\n");
 217                break;
 218        default:
 219                puts("Unknown\n");
 220                return 0;
 221        }
 222
 223        /* Setup clocks and memory mode for Coral-P(A) */
 224        HOST_WR_REG(GC_CCF, CONFIG_SYS_MB862xx_CCF);
 225        udelay (200);
 226        HOST_WR_REG(GC_MMR, CONFIG_SYS_MB862xx_MMR);
 227        udelay (100);
 228        return dev->frameAdrs;
 229}
 230
 231unsigned int card_init (void)
 232{
 233        GraphicDevice *dev = &mb862xx;
 234        unsigned int cf, videomode, div = 0;
 235        unsigned long t1, hsync, vsync;
 236        char *penv;
 237        int tmp, i, bpp;
 238        struct ctfb_res_modes *res_mode;
 239        struct ctfb_res_modes var_mode;
 240
 241        memset (dev, 0, sizeof (GraphicDevice));
 242
 243        if (!pci_video_init ())
 244                return 0;
 245
 246        tmp = 0;
 247        videomode = 0x310;
 248        /* get video mode via environment */
 249        if ((penv = getenv ("videomode")) != NULL) {
 250                /* decide if it is a string */
 251                if (penv[0] <= '9') {
 252                        videomode = (int) simple_strtoul (penv, NULL, 16);
 253                        tmp = 1;
 254                }
 255        } else {
 256                tmp = 1;
 257        }
 258
 259        if (tmp) {
 260                /* parameter are vesa modes, search params */
 261                for (i = 0; i < VESA_MODES_COUNT; i++) {
 262                        if (vesa_modes[i].vesanr == videomode)
 263                                break;
 264                }
 265                if (i == VESA_MODES_COUNT) {
 266                        printf ("\tno VESA Mode found, fallback to mode 0x%x\n",
 267                                videomode);
 268                        i = 0;
 269                }
 270                res_mode = (struct ctfb_res_modes *)
 271                           &res_mode_init[vesa_modes[i].resindex];
 272                if (vesa_modes[i].resindex > 2) {
 273                        puts ("\tUnsupported resolution, using default\n");
 274                        bpp = vesa_modes[1].bits_per_pixel;
 275                        div = fr_div[1];
 276                }
 277                bpp = vesa_modes[i].bits_per_pixel;
 278                div = fr_div[vesa_modes[i].resindex];
 279        } else {
 280                res_mode = (struct ctfb_res_modes *) &var_mode;
 281                bpp = video_get_params (res_mode, penv);
 282        }
 283
 284        /* calculate hsync and vsync freq (info only) */
 285        t1 = (res_mode->left_margin + res_mode->xres +
 286              res_mode->right_margin + res_mode->hsync_len) / 8;
 287        t1 *= 8;
 288        t1 *= res_mode->pixclock;
 289        t1 /= 1000;
 290        hsync = 1000000000L / t1;
 291        t1 *= (res_mode->upper_margin + res_mode->yres +
 292               res_mode->lower_margin + res_mode->vsync_len);
 293        t1 /= 1000;
 294        vsync = 1000000000L / t1;
 295
 296        /* fill in Graphic device struct */
 297        sprintf (dev->modeIdent, "%dx%dx%d %ldkHz %ldHz", res_mode->xres,
 298                 res_mode->yres, bpp, (hsync / 1000), (vsync / 1000));
 299        printf ("\t%s\n", dev->modeIdent);
 300        dev->winSizeX = res_mode->xres;
 301        dev->winSizeY = res_mode->yres;
 302        dev->memSize = VIDEO_MEM_SIZE;
 303
 304        switch (bpp) {
 305        case 8:
 306                dev->gdfIndex = GDF__8BIT_INDEX;
 307                dev->gdfBytesPP = 1;
 308                break;
 309        case 15:
 310        case 16:
 311                dev->gdfIndex = GDF_15BIT_555RGB;
 312                dev->gdfBytesPP = 2;
 313                break;
 314        default:
 315                printf ("\t%d bpp configured, but only 8,15 and 16 supported\n",
 316                        bpp);
 317                puts ("\tfallback to 15bpp\n");
 318                dev->gdfIndex = GDF_15BIT_555RGB;
 319                dev->gdfBytesPP = 2;
 320        }
 321
 322        /* Setup dot clock (internal pll, division rate) */
 323        DISP_WR_REG (GC_DCM1, div);
 324        /* L0 init */
 325        cf = (dev->gdfBytesPP == 1) ? 0x00000000 : 0x80000000;
 326        DISP_WR_REG (GC_L0M, ((dev->winSizeX * dev->gdfBytesPP) / 64) << 16 |
 327                             (dev->winSizeY - 1) | cf);
 328        DISP_WR_REG (GC_L0OA0, 0x0);
 329        DISP_WR_REG (GC_L0DA0, 0x0);
 330        DISP_WR_REG (GC_L0DY_L0DX, 0x0);
 331        DISP_WR_REG (GC_L0EM, 0x0);
 332        DISP_WR_REG (GC_L0WY_L0WX, 0x0);
 333        DISP_WR_REG (GC_L0WH_L0WW, (dev->winSizeY - 1) << 16 | dev->winSizeX);
 334
 335        /* Display timing init */
 336        DISP_WR_REG (GC_HTP_A, (dev->winSizeX +
 337                                res_mode->left_margin +
 338                                res_mode->right_margin +
 339                                res_mode->hsync_len - 1) << 16);
 340        DISP_WR_REG (GC_HDB_HDP_A, (dev->winSizeX - 1) << 16 |
 341                                   (dev->winSizeX - 1));
 342        DISP_WR_REG (GC_VSW_HSW_HSP_A,  (res_mode->vsync_len - 1) << 24 |
 343                                        (res_mode->hsync_len - 1) << 16 |
 344                                        (dev->winSizeX +
 345                                         res_mode->right_margin - 1));
 346        DISP_WR_REG (GC_VTR_A, (dev->winSizeY + res_mode->lower_margin +
 347                                res_mode->upper_margin +
 348                                res_mode->vsync_len - 1) << 16);
 349        DISP_WR_REG (GC_VDP_VSP_A, (dev->winSizeY-1) << 16 |
 350                                   (dev->winSizeY +
 351                                    res_mode->lower_margin - 1));
 352        DISP_WR_REG (GC_WY_WX, 0x0);
 353        DISP_WR_REG (GC_WH_WW, dev->winSizeY << 16 | dev->winSizeX);
 354        /* Display enable, L0 layer */
 355        DISP_WR_REG (GC_DCM1, 0x80010000 | div);
 356
 357        return dev->frameAdrs;
 358}
 359#endif
 360
 361
 362#if !defined(CONFIG_VIDEO_CORALP)
 363int mb862xx_probe(unsigned int addr)
 364{
 365        GraphicDevice *dev = &mb862xx;
 366        unsigned int reg;
 367
 368        dev->frameAdrs = addr;
 369        dev->dprBase = dev->frameAdrs + GC_DRAW_BASE;
 370
 371        /* Try to access GDC ID/Revision registers */
 372        reg = HOST_RD_REG (GC_CID);
 373        reg = HOST_RD_REG (GC_CID);
 374        if (reg == 0x303) {
 375                reg = DE_RD_REG(GC_REV);
 376                reg = DE_RD_REG(GC_REV);
 377                if ((reg & ~0xff) == 0x20050100)
 378                        return MB862XX_TYPE_LIME;
 379        }
 380
 381        return 0;
 382}
 383#endif
 384
 385void *video_hw_init (void)
 386{
 387        GraphicDevice *dev = &mb862xx;
 388
 389        puts ("Video: Fujitsu ");
 390
 391        memset (dev, 0, sizeof (GraphicDevice));
 392
 393#if defined(CONFIG_VIDEO_CORALP)
 394        if (card_init () == 0)
 395                return NULL;
 396#else
 397        /*
 398         * Preliminary init of the onboard graphic controller,
 399         * retrieve base address
 400         */
 401        if ((dev->frameAdrs = board_video_init ()) == 0) {
 402                puts ("Controller not found!\n");
 403                return NULL;
 404        } else {
 405                puts ("Lime\n");
 406
 407                /* Set Change of Clock Frequency Register */
 408                HOST_WR_REG (GC_CCF, CONFIG_SYS_MB862xx_CCF);
 409                /* Delay required */
 410                udelay(300);
 411                /* Set Memory I/F Mode Register) */
 412                HOST_WR_REG (GC_MMR, CONFIG_SYS_MB862xx_MMR);
 413        }
 414#endif
 415
 416        de_init ();
 417
 418#if !defined(CONFIG_VIDEO_CORALP)
 419        board_disp_init ();
 420#endif
 421
 422#if (defined(CONFIG_LWMON5) || \
 423     defined(CONFIG_SOCRATES)) && !(CONFIG_POST & CONFIG_SYS_POST_SYSMON)
 424        /* Lamp on */
 425        board_backlight_switch (1);
 426#endif
 427
 428        return dev;
 429}
 430
 431/*
 432 * Set a RGB color in the LUT
 433 */
 434void video_set_lut (unsigned int index, unsigned char r,
 435                    unsigned char g, unsigned char b)
 436{
 437        GraphicDevice *dev = &mb862xx;
 438
 439        L0PAL_WR_REG (index, (r << 16) | (g << 8) | (b));
 440}
 441
 442#if defined(CONFIG_VIDEO_MB862xx_ACCEL)
 443/*
 444 * Drawing engine Fill and BitBlt screen region
 445 */
 446void video_hw_rectfill (unsigned int bpp, unsigned int dst_x,
 447                        unsigned int dst_y, unsigned int dim_x,
 448                        unsigned int dim_y, unsigned int color)
 449{
 450        GraphicDevice *dev = &mb862xx;
 451
 452        de_wait_slots (3);
 453        DE_WR_REG (GC_FC, color);
 454        DE_WR_FIFO (0x09410000);
 455        DE_WR_FIFO ((dst_y << 16) | dst_x);
 456        DE_WR_FIFO ((dim_y << 16) | dim_x);
 457        de_wait ();
 458}
 459
 460void video_hw_bitblt (unsigned int bpp, unsigned int src_x,
 461                      unsigned int src_y, unsigned int dst_x,
 462                      unsigned int dst_y, unsigned int width,
 463                      unsigned int height)
 464{
 465        GraphicDevice *dev = &mb862xx;
 466        unsigned int ctrl = 0x0d000000L;
 467
 468        if (src_x >= dst_x && src_y >= dst_y)
 469                ctrl |= 0x00440000L;
 470        else if (src_x >= dst_x && src_y <= dst_y)
 471                ctrl |= 0x00460000L;
 472        else if (src_x <= dst_x && src_y >= dst_y)
 473                ctrl |= 0x00450000L;
 474        else
 475                ctrl |= 0x00470000L;
 476
 477        de_wait_slots (4);
 478        DE_WR_FIFO (ctrl);
 479        DE_WR_FIFO ((src_y << 16) | src_x);
 480        DE_WR_FIFO ((dst_y << 16) | dst_x);
 481        DE_WR_FIFO ((height << 16) | width);
 482        de_wait (); /* sync */
 483}
 484#endif
 485