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 "dp501.h"
  13 #include <gdsys_fpga.h>
  14
  15 #define CH7301_I2C_ADDR 0x75
  16
  17 #define ICS8N3QV01_I2C_ADDR 0x6E
  18 #define ICS8N3QV01_FREF 114285000
  19 #define ICS8N3QV01_FREF_LL 114285000LL
  20 #define ICS8N3QV01_F_DEFAULT_0 156250000LL
  21 #define ICS8N3QV01_F_DEFAULT_1 125000000LL
  22 #define ICS8N3QV01_F_DEFAULT_2 100000000LL
  23 #define ICS8N3QV01_F_DEFAULT_3  25175000LL
  24
  25 #define SIL1178_MASTER_I2C_ADDRESS 0x38
  26 #define SIL1178_SLAVE_I2C_ADDRESS 0x39
  27
  28 #define DP501_I2C_ADDR 0x08
  29
  30 #define PIXCLK_640_480_60 25180000
  31
  32 enum {
  33         CH7301_CM = 0x1c,               /* Clock Mode Register */
  34         CH7301_IC = 0x1d,               /* Input Clock Register */
  35         CH7301_GPIO = 0x1e,             /* GPIO Control Register */
  36         CH7301_IDF = 0x1f,              /* Input Data Format Register */
  37         CH7301_CD = 0x20,               /* Connection Detect Register */
  38         CH7301_DC = 0x21,               /* DAC Control Register */
  39         CH7301_HPD = 0x23,              /* Hot Plug Detection Register */
  40         CH7301_TCTL = 0x31,             /* DVI Control Input Register */
  41         CH7301_TPCP = 0x33,             /* DVI PLL Charge Pump Ctrl Register */
  42         CH7301_TPD = 0x34,              /* DVI PLL Divide Register */
  43         CH7301_TPVT = 0x35,             /* DVI PLL Supply Control Register */
  44         CH7301_TPF = 0x36,              /* DVI PLL Filter Register */
  45         CH7301_TCT = 0x37,              /* DVI Clock Test Register */
  46         CH7301_TSTP = 0x48,             /* Test Pattern Register */
  47         CH7301_PM = 0x49,               /* Power Management register */
  48         CH7301_VID = 0x4a,              /* Version ID Register */
  49         CH7301_DID = 0x4b,              /* Device ID Register */
  50         CH7301_DSP = 0x56,              /* DVI Sync polarity Register */
  51 };
  52
  53 unsigned int base_width;
  54 unsigned int base_height;
  55 size_t bufsize;
  56 u16 *buf;
  57
  58 unsigned int max_osd_screen = CONFIG_SYS_OSD_SCREENS - 1;
  59
  60 #ifdef CONFIG_SYS_ICS8N3QV01_I2C
  61 int ics8n3qv01_i2c[] = CONFIG_SYS_ICS8N3QV01_I2C;
  62 #endif
  63
  64 #ifdef CONFIG_SYS_CH7301_I2C
  65 int ch7301_i2c[] = CONFIG_SYS_CH7301_I2C;
  66 #endif
  67
  68 #ifdef CONFIG_SYS_SIL1178_I2C
  69 int sil1178_i2c[] = CONFIG_SYS_SIL1178_I2C;
  70 #endif
  71
  72 #ifdef CONFIG_SYS_DP501_I2C
  73 int dp501_i2c[] = CONFIG_SYS_DP501_I2C;
  74 #endif
  75
  76
  77 #ifdef CONFIG_SYS_MPC92469AC
  78 static void mpc92469ac_calc_parameters(unsigned int fout,
  79         unsigned int *post_div, unsigned int *feedback_div)
  80 {
  81         unsigned int n = *post_div;
  82         unsigned int m = *feedback_div;
  83         unsigned int a;
  84         unsigned int b = 14745600 / 16;
  85
  86         if (fout < 50169600)
  87                 n = 8;
  88         else if (fout < 100339199)
  89                 n = 4;
  90         else if (fout < 200678399)
  91                 n = 2;
  92         else
  93                 n = 1;
  94
  95         a = fout * n + (b / 2); /* add b/2 for proper rounding */
  96
  97         m = a / b;
  98
  99         *post_div = n;
 100         *feedback_div = m;
 101 }
 102
 103 static void mpc92469ac_set(unsigned screen, unsigned int fout)
 104 {
 105         unsigned int n;
 106         unsigned int m;
 107         unsigned int bitval = 0;
 108         mpc92469ac_calc_parameters(fout, &n, &m);
 109
 110         switch (n) {
 111         case 1:
 112                 bitval = 0x00;
 113                 break;
 114         case 2:
 115                 bitval = 0x01;
 116                 break;
 117         case 4:
 118                 bitval = 0x02;
 119                 break;
 120         case 8:
 121                 bitval = 0x03;
 122                 break;
 123         }
 124
 125         FPGA_SET_REG(screen, mpc3w_control, (bitval << 9) | m);
 126 }
 127 #endif
 128
 129 #ifdef CONFIG_SYS_ICS8N3QV01_I2C
 130
 131 static unsigned int ics8n3qv01_get_fout_calc(unsigned index)
 132 {
 133         unsigned long long n;
 134         unsigned long long mint;
 135         unsigned long long mfrac;
 136         u8 reg_a, reg_b, reg_c, reg_d, reg_f;
 137         unsigned long long fout_calc;
 138
 139         if (index > 3)
 140                 return 0;
 141
 142         reg_a = i2c_reg_read(ICS8N3QV01_I2C_ADDR, 0 + index);
 143         reg_b = i2c_reg_read(ICS8N3QV01_I2C_ADDR, 4 + index);
 144         reg_c = i2c_reg_read(ICS8N3QV01_I2C_ADDR, 8 + index);
 145         reg_d = i2c_reg_read(ICS8N3QV01_I2C_ADDR, 12 + index);
 146         reg_f = i2c_reg_read(ICS8N3QV01_I2C_ADDR, 20 + index);
 147
 148         mint = ((reg_a >> 1) & 0x1f) | (reg_f & 0x20);
 149         mfrac = ((reg_a & 0x01) << 17) | (reg_b << 9) | (reg_c << 1)
 150                 | (reg_d >> 7);
 151         n = reg_d & 0x7f;
 152
 153         fout_calc = (mint * ICS8N3QV01_FREF_LL
 154                      + mfrac * ICS8N3QV01_FREF_LL / 262144LL
 155                      + ICS8N3QV01_FREF_LL / 524288LL
 156                      + n / 2)
 157                     / n
 158                     * 1000000
 159                     / (1000000 - 100);
 160
 161         return fout_calc;
 162 }
 163
 164
 165 static void ics8n3qv01_calc_parameters(unsigned int fout,
 166         unsigned int *_mint, unsigned int *_mfrac,
 167         unsigned int *_n)
 168 {
 169         unsigned int n;
 170         unsigned int foutiic;
 171         unsigned int fvcoiic;
 172         unsigned int mint;
 173         unsigned long long mfrac;
 174
 175         n = (2215000000U + fout / 2) / fout;
 176         if ((n & 1) && (n > 5))
 177                 n -= 1;
 178
 179         foutiic = fout - (fout / 10000);
 180         fvcoiic = foutiic * n;
 181
 182         mint = fvcoiic / 114285000;
 183         if ((mint < 17) || (mint > 63))
 184                 printf("ics8n3qv01_calc_parameters: cannot determine mint\n");
 185
 186         mfrac = ((unsigned long long)fvcoiic % 114285000LL) * 262144LL
 187                 / 114285000LL;
 188
 189         *_mint = mint;
 190         *_mfrac = mfrac;
 191         *_n = n;
 192 }
 193
 194 static void ics8n3qv01_set(unsigned int fout)
 195 {
 196         unsigned int n;
 197         unsigned int mint;
 198         unsigned int mfrac;
 199         unsigned int fout_calc;
 200         unsigned long long fout_prog;
 201         long long off_ppm;
 202         u8 reg0, reg4, reg8, reg12, reg18, reg20;
 203
 204         fout_calc = ics8n3qv01_get_fout_calc(1);
 205         off_ppm = (fout_calc - ICS8N3QV01_F_DEFAULT_1) * 1000000
 206                   / ICS8N3QV01_F_DEFAULT_1;
 207         printf("       PLL is off by %lld ppm\n", off_ppm);
 208         fout_prog = (unsigned long long)fout * (unsigned long long)fout_calc
 209                     / ICS8N3QV01_F_DEFAULT_1;
 210         ics8n3qv01_calc_parameters(fout_prog, &mint, &mfrac, &n);
 211
 212         reg0 = i2c_reg_read(ICS8N3QV01_I2C_ADDR, 0) & 0xc0;
 213         reg0 |= (mint & 0x1f) << 1;
 214         reg0 |= (mfrac >> 17) & 0x01;
 215         i2c_reg_write(ICS8N3QV01_I2C_ADDR, 0, reg0);
 216
 217         reg4 = mfrac >> 9;
 218         i2c_reg_write(ICS8N3QV01_I2C_ADDR, 4, reg4);
 219
 220         reg8 = mfrac >> 1;
 221         i2c_reg_write(ICS8N3QV01_I2C_ADDR, 8, reg8);
 222
 223         reg12 = mfrac << 7;
 224         reg12 |= n & 0x7f;
 225         i2c_reg_write(ICS8N3QV01_I2C_ADDR, 12, reg12);
 226
 227         reg18 = i2c_reg_read(ICS8N3QV01_I2C_ADDR, 18) & 0x03;
 228         reg18 |= 0x20;
 229         i2c_reg_write(ICS8N3QV01_I2C_ADDR, 18, reg18);
 230
 231         reg20 = i2c_reg_read(ICS8N3QV01_I2C_ADDR, 20) & 0x1f;
 232         reg20 |= mint & (1 << 5);
 233         i2c_reg_write(ICS8N3QV01_I2C_ADDR, 20, reg20);
 234 }
 235 #endif
 236
 237 static int osd_write_videomem(unsigned screen, unsigned offset,
 238         u16 *data, size_t charcount)
 239 {
 240         unsigned int k;
 241
 242         for (k = 0; k < charcount; ++k) {
 243                 if (offset + k >= bufsize)
 244                         return -1;
 245                 FPGA_SET_REG(screen, videomem[offset + k], data[k]);
 246         }
 247
 248         return charcount;
 249 }
 250
 251 static int osd_print(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 252 {
 253         unsigned screen;
 254
 255         for (screen = 0; screen <= max_osd_screen; ++screen) {
 256                 unsigned x;
 257                 unsigned y;
 258                 unsigned charcount;
 259                 unsigned len;
 260                 u8 color;
 261                 unsigned int k;
 262                 char *text;
 263                 int res;
 264
 265                 if (argc < 5) {
 266                         cmd_usage(cmdtp);
 267                         return 1;
 268                 }
 269
 270                 x = simple_strtoul(argv[1], NULL, 16);
 271                 y = simple_strtoul(argv[2], NULL, 16);
 272                 color = simple_strtoul(argv[3], NULL, 16);
 273                 text = argv[4];
 274                 charcount = strlen(text);
 275                 len = (charcount > bufsize) ? bufsize : charcount;
 276
 277                 for (k = 0; k < len; ++k)
 278                         buf[k] = (text[k] << 8) | color;
 279
 280                 res = osd_write_videomem(screen, y * base_width + x, buf, len);
 281                 if (res < 0)
 282                         return res;
 283         }
 284
 285         return 0;
 286 }
 287
 288 int osd_probe(unsigned screen)
 289 {
 290         u16 version;
 291         u16 features;
 292         int old_bus = i2c_get_bus_num();
 293         bool pixclock_present = false;
 294         bool output_driver_present = false;
 295
 296         FPGA_GET_REG(0, osd.version, &version);
 297         FPGA_GET_REG(0, osd.features, &features);
 298
 299         base_width = ((features & 0x3f00) >> 8) + 1;
 300         base_height = (features & 0x001f) + 1;
 301         bufsize = base_width * base_height;
 302         buf = malloc(sizeof(u16) * bufsize);
 303         if (!buf)
 304                 return -1;
 305
 306         printf("OSD%d:  Digital-OSD version %01d.%02d, %d" "x%d characters\n",
 307                 screen, version/100, version%100, base_width, base_height);
 308
 309         /* setup pixclock */
 310
 311 #ifdef CONFIG_SYS_MPC92469AC
 312         pixclock_present = true;
 313         mpc92469ac_set(screen, PIXCLK_640_480_60);
 314 #endif
 315
 316 #ifdef CONFIG_SYS_ICS8N3QV01_I2C
 317         i2c_set_bus_num(ics8n3qv01_i2c[screen]);
 318         if (!i2c_probe(ICS8N3QV01_I2C_ADDR)) {
 319                 ics8n3qv01_set(PIXCLK_640_480_60);
 320                 pixclock_present = true;
 321         }
 322 #endif
 323
 324         if (!pixclock_present)
 325                 printf("       no pixelclock found\n");
 326
 327         /* setup output driver */
 328
 329 #ifdef CONFIG_SYS_CH7301_I2C
 330         i2c_set_bus_num(ch7301_i2c[screen]);
 331         if (!i2c_probe(CH7301_I2C_ADDR)) {
 332                 u8 value = i2c_reg_read(CH7301_I2C_ADDR, CH7301_DID);
 333
 334                 if (value == 0x17) {
 335                         i2c_reg_write(CH7301_I2C_ADDR, CH7301_TPCP, 0x08);
 336                         i2c_reg_write(CH7301_I2C_ADDR, CH7301_TPD, 0x16);
 337                         i2c_reg_write(CH7301_I2C_ADDR, CH7301_TPF, 0x60);
 338                         i2c_reg_write(CH7301_I2C_ADDR, CH7301_DC, 0x09);
 339                         i2c_reg_write(CH7301_I2C_ADDR, CH7301_PM, 0xc0);
 340                         output_driver_present = true;
 341                 }
 342         }
 343 #endif
 344
 345 #ifdef CONFIG_SYS_SIL1178_I2C
 346         i2c_set_bus_num(sil1178_i2c[screen]);
 347         if (!i2c_probe(SIL1178_SLAVE_I2C_ADDRESS)) {
 348                 if (i2c_reg_read(SIL1178_SLAVE_I2C_ADDRESS, 0x02) == 0x06) {
 349                         /*
 350                          * magic initialization sequence,
 351                          * adapted from datasheet
 352                          */
 353                         i2c_reg_write(SIL1178_SLAVE_I2C_ADDRESS, 0x08, 0x36);
 354                         i2c_reg_write(SIL1178_MASTER_I2C_ADDRESS, 0x0f, 0x44);
 355                         i2c_reg_write(SIL1178_MASTER_I2C_ADDRESS, 0x0f, 0x4c);
 356                         i2c_reg_write(SIL1178_MASTER_I2C_ADDRESS, 0x0e, 0x10);
 357                         i2c_reg_write(SIL1178_MASTER_I2C_ADDRESS, 0x0a, 0x80);
 358                         i2c_reg_write(SIL1178_MASTER_I2C_ADDRESS, 0x09, 0x30);
 359                         i2c_reg_write(SIL1178_MASTER_I2C_ADDRESS, 0x0c, 0x89);
 360                         i2c_reg_write(SIL1178_MASTER_I2C_ADDRESS, 0x0d, 0x60);
 361                         i2c_reg_write(SIL1178_MASTER_I2C_ADDRESS, 0x08, 0x36);
 362                         i2c_reg_write(SIL1178_MASTER_I2C_ADDRESS, 0x08, 0x37);
 363                         output_driver_present = true;
 364                 }
 365         }
 366 #endif
 367
 368 #ifdef CONFIG_SYS_DP501_I2C
 369         i2c_set_bus_num(dp501_i2c[screen]);
 370         if (!i2c_probe(DP501_I2C_ADDR)) {
 371                 dp501_powerup(DP501_I2C_ADDR);
 372                 output_driver_present = true;
 373         }
 374 #endif
 375
 376         if (!output_driver_present)
 377                 printf("       no output driver found\n");
 378
 379         FPGA_SET_REG(screen, osd.control, 0x0049);
 380
 381         FPGA_SET_REG(screen, osd.xy_size, ((32 - 1) << 8) | (16 - 1));
 382         FPGA_SET_REG(screen, osd.x_pos, 0x007f);
 383         FPGA_SET_REG(screen, osd.y_pos, 0x005f);
 384
 385         if (screen > max_osd_screen)
 386                 max_osd_screen = screen;
 387
 388         i2c_set_bus_num(old_bus);
 389
 390         return 0;
 391 }
 392
 393 int osd_write(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 394 {
 395         unsigned screen;
 396
 397         for (screen = 0; screen <= max_osd_screen; ++screen) {
 398                 unsigned x;
 399                 unsigned y;
 400                 unsigned k;
 401                 u16 buffer[base_width];
 402                 char *rp;
 403                 u16 *wp = buffer;
 404                 unsigned count = (argc > 4) ?
 405                         simple_strtoul(argv[4], NULL, 16) : 1;
 406
 407                 if ((argc < 4) || (strlen(argv[3]) % 4)) {
 408                         cmd_usage(cmdtp);
 409                         return 1;
 410                 }
 411
 412                 x = simple_strtoul(argv[1], NULL, 16);
 413                 y = simple_strtoul(argv[2], NULL, 16);
 414                 rp = argv[3];
 415
 416
 417                 while (*rp) {
 418                         char substr[5];
 419
 420                         memcpy(substr, rp, 4);
 421                         substr[4] = 0;
 422                         *wp = simple_strtoul(substr, NULL, 16);
 423
 424                         rp += 4;
 425                         wp++;
 426                         if (wp - buffer > base_width)
 427                                 break;
 428                 }
 429
 430                 for (k = 0; k < count; ++k) {
 431                         unsigned offset =
 432                                 y * base_width + x + k * (wp - buffer);
 433                         osd_write_videomem(screen, offset, buffer,
 434                                 wp - buffer);
 435                 }
 436         }
 437
 438         return 0;
 439 }
 440
 441 U_BOOT_CMD(
 442         osdw, 5, 0, osd_write,
 443         "write 16-bit hex encoded buffer to osd memory",
 444         "pos_x pos_y buffer count\n"
 445 );
 446
 447 U_BOOT_CMD(
 448         osdp, 5, 0, osd_print,
 449         "write ASCII buffer to osd memory",
 450         "pos_x pos_y color text\n"
 451 );