board/gdsys/common/osd.c

   1 /*
   2  * (C) Copyright 2010
   3  * Dirk Eibach,  Guntermann & Drunck GmbH, eibach@gdsys.de
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <i2c.h>
  10 #include <malloc.h>
  11
  12 #include "ch7301.h"
  13 #include "dp501.h"
  14 #include <gdsys_fpga.h>
  15
  16 #define ICS8N3QV01_I2C_ADDR 0x6E
  17 #define ICS8N3QV01_FREF 114285000
  18 #define ICS8N3QV01_FREF_LL 114285000LL
  19 #define ICS8N3QV01_F_DEFAULT_0 156250000LL
  20 #define ICS8N3QV01_F_DEFAULT_1 125000000LL
  21 #define ICS8N3QV01_F_DEFAULT_2 100000000LL
  22 #define ICS8N3QV01_F_DEFAULT_3  25175000LL
  23
  24 #define SIL1178_MASTER_I2C_ADDRESS 0x38
  25 #define SIL1178_SLAVE_I2C_ADDRESS 0x39
  26
  27 #define DP501_I2C_ADDR 0x08
  28
  29 #define PIXCLK_640_480_60 25180000
  30
  31 #ifdef CONFIG_SYS_OSD_DH
  32 #define MAX_OSD_SCREEN 8
  33 #define OSD_DH_BASE 4
  34 #else
  35 #define MAX_OSD_SCREEN 4
  36 #endif
  37
  38 #ifdef CONFIG_SYS_OSD_DH
  39 #define OSD_SET_REG(screen, fld, val) \
  40         do { \
  41                 if (screen >= OSD_DH_BASE) \
  42                         FPGA_SET_REG(screen - OSD_DH_BASE, osd1.fld, val); \
  43                 else \
  44                         FPGA_SET_REG(screen, osd0.fld, val); \
  45         } while (0)
  46 #else
  47 #define OSD_SET_REG(screen, fld, val) \
  48                 FPGA_SET_REG(screen, osd0.fld, val)
  49 #endif
  50
  51 #ifdef CONFIG_SYS_OSD_DH
  52 #define OSD_GET_REG(screen, fld, val) \
  53         do {                                    \
  54                 if (screen >= OSD_DH_BASE) \
  55                         FPGA_GET_REG(screen - OSD_DH_BASE, osd1.fld, val); \
  56                 else \
  57                         FPGA_GET_REG(screen, osd0.fld, val); \
  58         } while (0)
  59 #else
  60 #define OSD_GET_REG(screen, fld, val) \
  61                 FPGA_GET_REG(screen, osd0.fld, val)
  62 #endif
  63
  64 unsigned int base_width;
  65 unsigned int base_height;
  66 size_t bufsize;
  67 u16 *buf;
  68
  69 unsigned int osd_screen_mask = 0;
  70
  71 #ifdef CONFIG_SYS_ICS8N3QV01_I2C
  72 int ics8n3qv01_i2c[] = CONFIG_SYS_ICS8N3QV01_I2C;
  73 #endif
  74
  75 #ifdef CONFIG_SYS_SIL1178_I2C
  76 int sil1178_i2c[] = CONFIG_SYS_SIL1178_I2C;
  77 #endif
  78
  79 #ifdef CONFIG_SYS_DP501_I2C
  80 int dp501_i2c[] = CONFIG_SYS_DP501_I2C;
  81 #endif
  82
  83 #ifdef CONFIG_SYS_DP501_BASE
  84 int dp501_base[] = CONFIG_SYS_DP501_BASE;
  85 #endif
  86
  87 #ifdef CONFIG_SYS_MPC92469AC
  88 static void mpc92469ac_calc_parameters(unsigned int fout,
  89         unsigned int *post_div, unsigned int *feedback_div)
  90 {
  91         unsigned int n = *post_div;
  92         unsigned int m = *feedback_div;
  93         unsigned int a;
  94         unsigned int b = 14745600 / 16;
  95
  96         if (fout < 50169600)
  97                 n = 8;
  98         else if (fout < 100339199)
  99                 n = 4;
 100         else if (fout < 200678399)
 101                 n = 2;
 102         else
 103                 n = 1;
 104
 105         a = fout * n + (b / 2); /* add b/2 for proper rounding */
 106
 107         m = a / b;
 108
 109         *post_div = n;
 110         *feedback_div = m;
 111 }
 112
 113 static void mpc92469ac_set(unsigned screen, unsigned int fout)
 114 {
 115         unsigned int n;
 116         unsigned int m;
 117         unsigned int bitval = 0;
 118         mpc92469ac_calc_parameters(fout, &n, &m);
 119
 120         switch (n) {
 121         case 1:
 122                 bitval = 0x00;
 123                 break;
 124         case 2:
 125                 bitval = 0x01;
 126                 break;
 127         case 4:
 128                 bitval = 0x02;
 129                 break;
 130         case 8:
 131                 bitval = 0x03;
 132                 break;
 133         }
 134
 135         FPGA_SET_REG(screen, mpc3w_control, (bitval << 9) | m);
 136 }
 137 #endif
 138
 139 #ifdef CONFIG_SYS_ICS8N3QV01_I2C
 140
 141 static unsigned int ics8n3qv01_get_fout_calc(unsigned index)
 142 {
 143         unsigned long long n;
 144         unsigned long long mint;
 145         unsigned long long mfrac;
 146         u8 reg_a, reg_b, reg_c, reg_d, reg_f;
 147         unsigned long long fout_calc;
 148
 149         if (index > 3)
 150                 return 0;
 151
 152         reg_a = i2c_reg_read(ICS8N3QV01_I2C_ADDR, 0 + index);
 153         reg_b = i2c_reg_read(ICS8N3QV01_I2C_ADDR, 4 + index);
 154         reg_c = i2c_reg_read(ICS8N3QV01_I2C_ADDR, 8 + index);
 155         reg_d = i2c_reg_read(ICS8N3QV01_I2C_ADDR, 12 + index);
 156         reg_f = i2c_reg_read(ICS8N3QV01_I2C_ADDR, 20 + index);
 157
 158         mint = ((reg_a >> 1) & 0x1f) | (reg_f & 0x20);
 159         mfrac = ((reg_a & 0x01) << 17) | (reg_b << 9) | (reg_c << 1)
 160                 | (reg_d >> 7);
 161         n = reg_d & 0x7f;
 162
 163         fout_calc = (mint * ICS8N3QV01_FREF_LL
 164                      + mfrac * ICS8N3QV01_FREF_LL / 262144LL
 165                      + ICS8N3QV01_FREF_LL / 524288LL
 166                      + n / 2)
 167                     / n
 168                     * 1000000
 169                     / (1000000 - 100);
 170
 171         return fout_calc;
 172 }
 173
 174
 175 static void ics8n3qv01_calc_parameters(unsigned int fout,
 176         unsigned int *_mint, unsigned int *_mfrac,
 177         unsigned int *_n)
 178 {
 179         unsigned int n;
 180         unsigned int foutiic;
 181         unsigned int fvcoiic;
 182         unsigned int mint;
 183         unsigned long long mfrac;
 184
 185         n = (2215000000U + fout / 2) / fout;
 186         if ((n & 1) && (n > 5))
 187                 n -= 1;
 188
 189         foutiic = fout - (fout / 10000);
 190         fvcoiic = foutiic * n;
 191
 192         mint = fvcoiic / 114285000;
 193         if ((mint < 17) || (mint > 63))
 194                 printf("ics8n3qv01_calc_parameters: cannot determine mint\n");
 195
 196         mfrac = ((unsigned long long)fvcoiic % 114285000LL) * 262144LL
 197                 / 114285000LL;
 198
 199         *_mint = mint;
 200         *_mfrac = mfrac;
 201         *_n = n;
 202 }
 203
 204 static void ics8n3qv01_set(unsigned int fout)
 205 {
 206         unsigned int n;
 207         unsigned int mint;
 208         unsigned int mfrac;
 209         unsigned int fout_calc;
 210         unsigned long long fout_prog;
 211         long long off_ppm;
 212         u8 reg0, reg4, reg8, reg12, reg18, reg20;
 213
 214         fout_calc = ics8n3qv01_get_fout_calc(1);
 215         off_ppm = (fout_calc - ICS8N3QV01_F_DEFAULT_1) * 1000000
 216                   / ICS8N3QV01_F_DEFAULT_1;
 217         printf("       PLL is off by %lld ppm\n", off_ppm);
 218         fout_prog = (unsigned long long)fout * (unsigned long long)fout_calc
 219                     / ICS8N3QV01_F_DEFAULT_1;
 220         ics8n3qv01_calc_parameters(fout_prog, &mint, &mfrac, &n);
 221
 222         reg0 = i2c_reg_read(ICS8N3QV01_I2C_ADDR, 0) & 0xc0;
 223         reg0 |= (mint & 0x1f) << 1;
 224         reg0 |= (mfrac >> 17) & 0x01;
 225         i2c_reg_write(ICS8N3QV01_I2C_ADDR, 0, reg0);
 226
 227         reg4 = mfrac >> 9;
 228         i2c_reg_write(ICS8N3QV01_I2C_ADDR, 4, reg4);
 229
 230         reg8 = mfrac >> 1;
 231         i2c_reg_write(ICS8N3QV01_I2C_ADDR, 8, reg8);
 232
 233         reg12 = mfrac << 7;
 234         reg12 |= n & 0x7f;
 235         i2c_reg_write(ICS8N3QV01_I2C_ADDR, 12, reg12);
 236
 237         reg18 = i2c_reg_read(ICS8N3QV01_I2C_ADDR, 18) & 0x03;
 238         reg18 |= 0x20;
 239         i2c_reg_write(ICS8N3QV01_I2C_ADDR, 18, reg18);
 240
 241         reg20 = i2c_reg_read(ICS8N3QV01_I2C_ADDR, 20) & 0x1f;
 242         reg20 |= mint & (1 << 5);
 243         i2c_reg_write(ICS8N3QV01_I2C_ADDR, 20, reg20);
 244 }
 245 #endif
 246
 247 static int osd_write_videomem(unsigned screen, unsigned offset,
 248         u16 *data, size_t charcount)
 249 {
 250         unsigned int k;
 251
 252         for (k = 0; k < charcount; ++k) {
 253                 if (offset + k >= bufsize)
 254                         return -1;
 255 #ifdef CONFIG_SYS_OSD_DH
 256                 if (screen >= OSD_DH_BASE)
 257                         FPGA_SET_REG(screen - OSD_DH_BASE,
 258                                      videomem1[offset + k], data[k]);
 259                 else
 260                         FPGA_SET_REG(screen, videomem0[offset + k], data[k]);
 261 #else
 262                 FPGA_SET_REG(screen, videomem0[offset + k], data[k]);
 263 #endif
 264         }
 265
 266         return charcount;
 267 }
 268
 269 static int osd_print(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 270 {
 271         unsigned screen;
 272
 273         if (argc < 5) {
 274                 cmd_usage(cmdtp);
 275                 return 1;
 276         }
 277
 278         for (screen = 0; screen < MAX_OSD_SCREEN; ++screen) {
 279                 unsigned x;
 280                 unsigned y;
 281                 unsigned charcount;
 282                 unsigned len;
 283                 u8 color;
 284                 unsigned int k;
 285                 char *text;
 286                 int res;
 287
 288                 if (!(osd_screen_mask & (1 << screen)))
 289                         continue;
 290
 291                 x = simple_strtoul(argv[1], NULL, 16);
 292                 y = simple_strtoul(argv[2], NULL, 16);
 293                 color = simple_strtoul(argv[3], NULL, 16);
 294                 text = argv[4];
 295                 charcount = strlen(text);
 296                 len = (charcount > bufsize) ? bufsize : charcount;
 297
 298                 for (k = 0; k < len; ++k)
 299                         buf[k] = (text[k] << 8) | color;
 300
 301                 res = osd_write_videomem(screen, y * base_width + x, buf, len);
 302                 if (res < 0)
 303                         return res;
 304         }
 305
 306         return 0;
 307 }
 308
 309 int osd_probe(unsigned screen)
 310 {
 311         u16 version;
 312         u16 features;
 313         int old_bus = i2c_get_bus_num();
 314         bool pixclock_present = false;
 315         bool output_driver_present = false;
 316 #ifdef CONFIG_SYS_DP501_I2C
 317 #ifdef CONFIG_SYS_DP501_BASE
 318         uint8_t dp501_addr = dp501_base[screen];
 319 #else
 320         uint8_t dp501_addr = DP501_I2C_ADDR;
 321 #endif
 322 #endif
 323
 324         OSD_GET_REG(0, version, &version);
 325         OSD_GET_REG(0, features, &features);
 326
 327         base_width = ((features & 0x3f00) >> 8) + 1;
 328         base_height = (features & 0x001f) + 1;
 329         bufsize = base_width * base_height;
 330         buf = malloc(sizeof(u16) * bufsize);
 331         if (!buf)
 332                 return -1;
 333
 334 #ifdef CONFIG_SYS_OSD_DH
 335         printf("OSD%d-%d: Digital-OSD version %01d.%02d, %d" "x%d characters\n",
 336                (screen >= OSD_DH_BASE) ? (screen - OSD_DH_BASE) : screen,
 337                (screen > 3) ? 1 : 0, version/100, version%100, base_width,
 338                base_height);
 339 #else
 340         printf("OSD%d:  Digital-OSD version %01d.%02d, %d" "x%d characters\n",
 341                screen, version/100, version%100, base_width, base_height);
 342 #endif
 343         /* setup pixclock */
 344
 345 #ifdef CONFIG_SYS_MPC92469AC
 346         pixclock_present = true;
 347         mpc92469ac_set(screen, PIXCLK_640_480_60);
 348 #endif
 349
 350 #ifdef CONFIG_SYS_ICS8N3QV01_I2C
 351         i2c_set_bus_num(ics8n3qv01_i2c[screen]);
 352         if (!i2c_probe(ICS8N3QV01_I2C_ADDR)) {
 353                 ics8n3qv01_set(PIXCLK_640_480_60);
 354                 pixclock_present = true;
 355         }
 356 #endif
 357
 358         if (!pixclock_present)
 359                 printf("       no pixelclock found\n");
 360
 361         /* setup output driver */
 362
 363 #ifdef CONFIG_SYS_CH7301_I2C
 364         if (!ch7301_probe(screen, true))
 365                 output_driver_present = true;
 366 #endif
 367
 368 #ifdef CONFIG_SYS_SIL1178_I2C
 369         i2c_set_bus_num(sil1178_i2c[screen]);
 370         if (!i2c_probe(SIL1178_SLAVE_I2C_ADDRESS)) {
 371                 if (i2c_reg_read(SIL1178_SLAVE_I2C_ADDRESS, 0x02) == 0x06) {
 372                         /*
 373                          * magic initialization sequence,
 374                          * adapted from datasheet
 375                          */
 376                         i2c_reg_write(SIL1178_SLAVE_I2C_ADDRESS, 0x08, 0x36);
 377                         i2c_reg_write(SIL1178_MASTER_I2C_ADDRESS, 0x0f, 0x44);
 378                         i2c_reg_write(SIL1178_MASTER_I2C_ADDRESS, 0x0f, 0x4c);
 379                         i2c_reg_write(SIL1178_MASTER_I2C_ADDRESS, 0x0e, 0x10);
 380                         i2c_reg_write(SIL1178_MASTER_I2C_ADDRESS, 0x0a, 0x80);
 381                         i2c_reg_write(SIL1178_MASTER_I2C_ADDRESS, 0x09, 0x30);
 382                         i2c_reg_write(SIL1178_MASTER_I2C_ADDRESS, 0x0c, 0x89);
 383                         i2c_reg_write(SIL1178_MASTER_I2C_ADDRESS, 0x0d, 0x60);
 384                         i2c_reg_write(SIL1178_MASTER_I2C_ADDRESS, 0x08, 0x36);
 385                         i2c_reg_write(SIL1178_MASTER_I2C_ADDRESS, 0x08, 0x37);
 386                         output_driver_present = true;
 387                 }
 388         }
 389 #endif
 390
 391 #ifdef CONFIG_SYS_DP501_I2C
 392         i2c_set_bus_num(dp501_i2c[screen]);
 393         if (!i2c_probe(dp501_addr)) {
 394                 dp501_powerup(dp501_addr);
 395                 output_driver_present = true;
 396         }
 397 #endif
 398
 399         if (!output_driver_present)
 400                 printf("       no output driver found\n");
 401
 402         OSD_SET_REG(screen, control, 0x0049);
 403
 404         OSD_SET_REG(screen, xy_size, ((32 - 1) << 8) | (16 - 1));
 405         OSD_SET_REG(screen, x_pos, 0x007f);
 406         OSD_SET_REG(screen, y_pos, 0x005f);
 407
 408         if (pixclock_present && output_driver_present)
 409                 osd_screen_mask |= 1 << screen;
 410
 411         i2c_set_bus_num(old_bus);
 412
 413         return 0;
 414 }
 415
 416 int osd_write(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 417 {
 418         unsigned screen;
 419
 420         if ((argc < 4) || (strlen(argv[3]) % 4)) {
 421                 cmd_usage(cmdtp);
 422                 return 1;
 423         }
 424
 425         for (screen = 0; screen < MAX_OSD_SCREEN; ++screen) {
 426                 unsigned x;
 427                 unsigned y;
 428                 unsigned k;
 429                 u16 buffer[base_width];
 430                 char *rp;
 431                 u16 *wp = buffer;
 432                 unsigned count = (argc > 4) ?
 433                         simple_strtoul(argv[4], NULL, 16) : 1;
 434
 435                 if (!(osd_screen_mask & (1 << screen)))
 436                         continue;
 437
 438                 x = simple_strtoul(argv[1], NULL, 16);
 439                 y = simple_strtoul(argv[2], NULL, 16);
 440                 rp = argv[3];
 441
 442
 443                 while (*rp) {
 444                         char substr[5];
 445
 446                         memcpy(substr, rp, 4);
 447                         substr[4] = 0;
 448                         *wp = simple_strtoul(substr, NULL, 16);
 449
 450                         rp += 4;
 451                         wp++;
 452                         if (wp - buffer > base_width)
 453                                 break;
 454                 }
 455
 456                 for (k = 0; k < count; ++k) {
 457                         unsigned offset =
 458                                 y * base_width + x + k * (wp - buffer);
 459                         osd_write_videomem(screen, offset, buffer,
 460                                 wp - buffer);
 461                 }
 462         }
 463
 464         return 0;
 465 }
 466
 467 U_BOOT_CMD(
 468         osdw, 5, 0, osd_write,
 469         "write 16-bit hex encoded buffer to osd memory",
 470         "pos_x pos_y buffer count\n"
 471 );
 472
 473 U_BOOT_CMD(
 474         osdp, 5, 0, osd_print,
 475         "write ASCII buffer to osd memory",
 476         "pos_x pos_y color text\n"
 477 );