1 /* 2 * (C) Copyright 2010 3 * Dirk Eibach, Guntermann & Drunck GmbH, eibach@gdsys.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 #include <common.h> 25 #include <i2c.h> 26 #include <asm/io.h> 27 28 #include <gdsys_fpga.h> 29 30 #define CH7301_I2C_ADDR 0x75 31 32 #define ICS8N3QV01_I2C_ADDR 0x6E 33 #define ICS8N3QV01_FREF 114285000 34 #define ICS8N3QV01_FREF_LL 114285000LL 35 #define ICS8N3QV01_F_DEFAULT_0 156250000LL 36 #define ICS8N3QV01_F_DEFAULT_1 125000000LL 37 #define ICS8N3QV01_F_DEFAULT_2 100000000LL 38 #define ICS8N3QV01_F_DEFAULT_3 25175000LL 39 40 #define SIL1178_MASTER_I2C_ADDRESS 0x38 41 #define SIL1178_SLAVE_I2C_ADDRESS 0x39 42 43 #define PIXCLK_640_480_60 25180000 44 45 #define BASE_WIDTH 32 46 #define BASE_HEIGHT 16 47 #define BUFSIZE (BASE_WIDTH * BASE_HEIGHT) 48 49 enum { 50 CH7301_CM = 0x1c, /* Clock Mode Register */ 51 CH7301_IC = 0x1d, /* Input Clock Register */ 52 CH7301_GPIO = 0x1e, /* GPIO Control Register */ 53 CH7301_IDF = 0x1f, /* Input Data Format Register */ 54 CH7301_CD = 0x20, /* Connection Detect Register */ 55 CH7301_DC = 0x21, /* DAC Control Register */ 56 CH7301_HPD = 0x23, /* Hot Plug Detection Register */ 57 CH7301_TCTL = 0x31, /* DVI Control Input Register */ 58 CH7301_TPCP = 0x33, /* DVI PLL Charge Pump Ctrl Register */ 59 CH7301_TPD = 0x34, /* DVI PLL Divide Register */ 60 CH7301_TPVT = 0x35, /* DVI PLL Supply Control Register */ 61 CH7301_TPF = 0x36, /* DVI PLL Filter Register */ 62 CH7301_TCT = 0x37, /* DVI Clock Test Register */ 63 CH7301_TSTP = 0x48, /* Test Pattern Register */ 64 CH7301_PM = 0x49, /* Power Management register */ 65 CH7301_VID = 0x4a, /* Version ID Register */ 66 CH7301_DID = 0x4b, /* Device ID Register */ 67 CH7301_DSP = 0x56, /* DVI Sync polarity Register */ 68 }; 69 70 #if defined(CONFIG_SYS_ICS8N3QV01) || defined(CONFIG_SYS_SIL1178) 71 static void fpga_iic_write(unsigned screen, u8 slave, u8 reg, u8 data) 72 { 73 struct ihs_fpga *fpga = (struct ihs_fpga *)CONFIG_SYS_FPGA_BASE(screen); 74 struct ihs_i2c *i2c = &fpga->i2c; 75 76 while (in_le16(&fpga->extended_interrupt) & (1 << 12)) 77 ; 78 out_le16(&i2c->write_mailbox_ext, reg | (data << 8)); 79 out_le16(&i2c->write_mailbox, 0xc400 | (slave << 1)); 80 } 81 82 static u8 fpga_iic_read(unsigned screen, u8 slave, u8 reg) 83 { 84 struct ihs_fpga *fpga = (struct ihs_fpga *)CONFIG_SYS_FPGA_BASE(screen); 85 struct ihs_i2c *i2c = &fpga->i2c; 86 unsigned int ctr = 0; 87 88 while (in_le16(&fpga->extended_interrupt) & (1 << 12)) 89 ; 90 out_le16(&fpga->extended_interrupt, 1 << 14); 91 out_le16(&i2c->write_mailbox_ext, reg); 92 out_le16(&i2c->write_mailbox, 0xc000 | (slave << 1)); 93 while (!(in_le16(&fpga->extended_interrupt) & (1 << 14))) { 94 udelay(100000); 95 if (ctr++ > 5) { 96 printf("iic receive timeout\n"); 97 break; 98 } 99 } 100 return in_le16(&i2c->read_mailbox_ext) >> 8; 101 } 102 #endif 103 104 #ifdef CONFIG_SYS_MPC92469AC 105 static void mpc92469ac_calc_parameters(unsigned int fout, 106 unsigned int *post_div, unsigned int *feedback_div) 107 { 108 unsigned int n = *post_div; 109 unsigned int m = *feedback_div; 110 unsigned int a; 111 unsigned int b = 14745600 / 16; 112 113 if (fout < 50169600) 114 n = 8; 115 else if (fout < 100339199) 116 n = 4; 117 else if (fout < 200678399) 118 n = 2; 119 else 120 n = 1; 121 122 a = fout * n + (b / 2); /* add b/2 for proper rounding */ 123 124 m = a / b; 125 126 *post_div = n; 127 *feedback_div = m; 128 } 129 130 static void mpc92469ac_set(unsigned screen, unsigned int fout) 131 { 132 struct ihs_fpga *fpga = (struct ihs_fpga *)CONFIG_SYS_FPGA_BASE(screen); 133 unsigned int n; 134 unsigned int m; 135 unsigned int bitval = 0; 136 mpc92469ac_calc_parameters(fout, &n, &m); 137 138 switch (n) { 139 case 1: 140 bitval = 0x00; 141 break; 142 case 2: 143 bitval = 0x01; 144 break; 145 case 4: 146 bitval = 0x02; 147 break; 148 case 8: 149 bitval = 0x03; 150 break; 151 } 152 153 out_le16(&fpga->mpc3w_control, (bitval << 9) | m); 154 } 155 #endif 156 157 #ifdef CONFIG_SYS_ICS8N3QV01 158 159 static unsigned int ics8n3qv01_get_fout_calc(unsigned screen, unsigned index) 160 { 161 unsigned long long n; 162 unsigned long long mint; 163 unsigned long long mfrac; 164 u8 reg_a, reg_b, reg_c, reg_d, reg_f; 165 unsigned long long fout_calc; 166 167 if (index > 3) 168 return 0; 169 170 reg_a = fpga_iic_read(screen, ICS8N3QV01_I2C_ADDR, 0 + index); 171 reg_b = fpga_iic_read(screen, ICS8N3QV01_I2C_ADDR, 4 + index); 172 reg_c = fpga_iic_read(screen, ICS8N3QV01_I2C_ADDR, 8 + index); 173 reg_d = fpga_iic_read(screen, ICS8N3QV01_I2C_ADDR, 12 + index); 174 reg_f = fpga_iic_read(screen, ICS8N3QV01_I2C_ADDR, 20 + index); 175 176 mint = ((reg_a >> 1) & 0x1f) | (reg_f & 0x20); 177 mfrac = ((reg_a & 0x01) << 17) | (reg_b << 9) | (reg_c << 1) 178 | (reg_d >> 7); 179 n = reg_d & 0x7f; 180 181 fout_calc = (mint * ICS8N3QV01_FREF_LL 182 + mfrac * ICS8N3QV01_FREF_LL / 262144LL 183 + ICS8N3QV01_FREF_LL / 524288LL 184 + n / 2) 185 / n 186 * 1000000 187 / (1000000 - 100); 188 189 return fout_calc; 190 } 191 192 193 static void ics8n3qv01_calc_parameters(unsigned int fout, 194 unsigned int *_mint, unsigned int *_mfrac, 195 unsigned int *_n) 196 { 197 unsigned int n; 198 unsigned int foutiic; 199 unsigned int fvcoiic; 200 unsigned int mint; 201 unsigned long long mfrac; 202 203 n = (2215000000U + fout / 2) / fout; 204 if ((n & 1) && (n > 5)) 205 n -= 1; 206 207 foutiic = fout - (fout / 10000); 208 fvcoiic = foutiic * n; 209 210 mint = fvcoiic / 114285000; 211 if ((mint < 17) || (mint > 63)) 212 printf("ics8n3qv01_calc_parameters: cannot determine mint\n"); 213 214 mfrac = ((unsigned long long)fvcoiic % 114285000LL) * 262144LL 215 / 114285000LL; 216 217 *_mint = mint; 218 *_mfrac = mfrac; 219 *_n = n; 220 } 221 222 static void ics8n3qv01_set(unsigned screen, unsigned int fout) 223 { 224 unsigned int n; 225 unsigned int mint; 226 unsigned int mfrac; 227 unsigned int fout_calc; 228 unsigned long long fout_prog; 229 long long off_ppm; 230 u8 reg0, reg4, reg8, reg12, reg18, reg20; 231 232 fout_calc = ics8n3qv01_get_fout_calc(screen, 1); 233 off_ppm = (fout_calc - ICS8N3QV01_F_DEFAULT_1) * 1000000 234 / ICS8N3QV01_F_DEFAULT_1; 235 printf(" PLL is off by %lld ppm\n", off_ppm); 236 fout_prog = (unsigned long long)fout * (unsigned long long)fout_calc 237 / ICS8N3QV01_F_DEFAULT_1; 238 ics8n3qv01_calc_parameters(fout_prog, &mint, &mfrac, &n); 239 240 reg0 = fpga_iic_read(screen, ICS8N3QV01_I2C_ADDR, 0) & 0xc0; 241 reg0 |= (mint & 0x1f) << 1; 242 reg0 |= (mfrac >> 17) & 0x01; 243 fpga_iic_write(screen, ICS8N3QV01_I2C_ADDR, 0, reg0); 244 245 reg4 = mfrac >> 9; 246 fpga_iic_write(screen, ICS8N3QV01_I2C_ADDR, 4, reg4); 247 248 reg8 = mfrac >> 1; 249 fpga_iic_write(screen, ICS8N3QV01_I2C_ADDR, 8, reg8); 250 251 reg12 = mfrac << 7; 252 reg12 |= n & 0x7f; 253 fpga_iic_write(screen, ICS8N3QV01_I2C_ADDR, 12, reg12); 254 255 reg18 = fpga_iic_read(screen, ICS8N3QV01_I2C_ADDR, 18) & 0x03; 256 reg18 |= 0x20; 257 fpga_iic_write(screen, ICS8N3QV01_I2C_ADDR, 18, reg18); 258 259 reg20 = fpga_iic_read(screen, ICS8N3QV01_I2C_ADDR, 20) & 0x1f; 260 reg20 |= mint & (1 << 5); 261 fpga_iic_write(screen, ICS8N3QV01_I2C_ADDR, 20, reg20); 262 } 263 #endif 264 265 static int osd_write_videomem(unsigned screen, unsigned offset, 266 u16 *data, size_t charcount) 267 { 268 struct ihs_fpga *fpga = 269 (struct ihs_fpga *) CONFIG_SYS_FPGA_BASE(screen); 270 unsigned int k; 271 272 for (k = 0; k < charcount; ++k) { 273 if (offset + k >= BUFSIZE) 274 return -1; 275 out_le16(&fpga->videomem + offset + k, data[k]); 276 } 277 278 return charcount; 279 } 280 281 static int osd_print(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 282 { 283 unsigned screen; 284 285 for (screen = 0; screen < CONFIG_SYS_OSD_SCREENS; ++screen) { 286 unsigned x; 287 unsigned y; 288 unsigned charcount; 289 unsigned len; 290 u8 color; 291 unsigned int k; 292 u16 buf[BUFSIZE]; 293 char *text; 294 int res; 295 296 if (argc < 5) { 297 cmd_usage(cmdtp); 298 return 1; 299 } 300 301 x = simple_strtoul(argv[1], NULL, 16); 302 y = simple_strtoul(argv[2], NULL, 16); 303 color = simple_strtoul(argv[3], NULL, 16); 304 text = argv[4]; 305 charcount = strlen(text); 306 len = (charcount > BUFSIZE) ? BUFSIZE : charcount; 307 308 for (k = 0; k < len; ++k) 309 buf[k] = (text[k] << 8) | color; 310 311 res = osd_write_videomem(screen, y * BASE_WIDTH + x, buf, len); 312 if (res < 0) 313 return res; 314 } 315 316 return 0; 317 } 318 319 int osd_probe(unsigned screen) 320 { 321 struct ihs_fpga *fpga = (struct ihs_fpga *)CONFIG_SYS_FPGA_BASE(screen); 322 struct ihs_osd *osd = &fpga->osd; 323 u16 version = in_le16(&osd->version); 324 u16 features = in_le16(&osd->features); 325 unsigned width; 326 unsigned height; 327 u8 value; 328 329 width = ((features & 0x3f00) >> 8) + 1; 330 height = (features & 0x001f) + 1; 331 332 printf("OSD%d: Digital-OSD version %01d.%02d, %d" "x%d characters\n", 333 screen, version/100, version%100, width, height); 334 335 #ifdef CONFIG_SYS_CH7301 336 value = i2c_reg_read(CH7301_I2C_ADDR, CH7301_DID); 337 if (value != 0x17) { 338 printf(" Probing CH7301 failed, DID %02x\n", value); 339 return -1; 340 } 341 i2c_reg_write(CH7301_I2C_ADDR, CH7301_TPCP, 0x08); 342 i2c_reg_write(CH7301_I2C_ADDR, CH7301_TPD, 0x16); 343 i2c_reg_write(CH7301_I2C_ADDR, CH7301_TPF, 0x60); 344 i2c_reg_write(CH7301_I2C_ADDR, CH7301_DC, 0x09); 345 i2c_reg_write(CH7301_I2C_ADDR, CH7301_PM, 0xc0); 346 #endif 347 348 #ifdef CONFIG_SYS_MPC92469AC 349 mpc92469ac_set(screen, PIXCLK_640_480_60); 350 #endif 351 352 #ifdef CONFIG_SYS_ICS8N3QV01 353 ics8n3qv01_set(screen, PIXCLK_640_480_60); 354 #endif 355 356 #ifdef CONFIG_SYS_SIL1178 357 value = fpga_iic_read(screen, SIL1178_SLAVE_I2C_ADDRESS, 0x02); 358 if (value != 0x06) { 359 printf(" Probing CH7301 SIL1178, DEV_IDL %02x\n", value); 360 return -1; 361 } 362 /* magic initialization sequence adapted from datasheet */ 363 fpga_iic_write(screen, SIL1178_SLAVE_I2C_ADDRESS, 0x08, 0x36); 364 fpga_iic_write(screen, SIL1178_MASTER_I2C_ADDRESS, 0x0f, 0x44); 365 fpga_iic_write(screen, SIL1178_MASTER_I2C_ADDRESS, 0x0f, 0x4c); 366 fpga_iic_write(screen, SIL1178_MASTER_I2C_ADDRESS, 0x0e, 0x10); 367 fpga_iic_write(screen, SIL1178_MASTER_I2C_ADDRESS, 0x0a, 0x80); 368 fpga_iic_write(screen, SIL1178_MASTER_I2C_ADDRESS, 0x09, 0x30); 369 fpga_iic_write(screen, SIL1178_MASTER_I2C_ADDRESS, 0x0c, 0x89); 370 fpga_iic_write(screen, SIL1178_MASTER_I2C_ADDRESS, 0x0d, 0x60); 371 fpga_iic_write(screen, SIL1178_MASTER_I2C_ADDRESS, 0x08, 0x36); 372 fpga_iic_write(screen, SIL1178_MASTER_I2C_ADDRESS, 0x08, 0x37); 373 #endif 374 375 out_le16(&fpga->videocontrol, 0x0002); 376 out_le16(&osd->control, 0x0049); 377 378 out_le16(&osd->xy_size, ((32 - 1) << 8) | (16 - 1)); 379 out_le16(&osd->x_pos, 0x007f); 380 out_le16(&osd->y_pos, 0x005f); 381 382 return 0; 383 } 384 385 int osd_write(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 386 { 387 unsigned screen; 388 389 for (screen = 0; screen < CONFIG_SYS_OSD_SCREENS; ++screen) { 390 unsigned x; 391 unsigned y; 392 unsigned k; 393 u16 buffer[BASE_WIDTH]; 394 char *rp; 395 u16 *wp = buffer; 396 unsigned count = (argc > 4) ? 397 simple_strtoul(argv[4], NULL, 16) : 1; 398 399 if ((argc < 4) || (strlen(argv[3]) % 4)) { 400 cmd_usage(cmdtp); 401 return 1; 402 } 403 404 x = simple_strtoul(argv[1], NULL, 16); 405 y = simple_strtoul(argv[2], NULL, 16); 406 rp = argv[3]; 407 408 409 while (*rp) { 410 char substr[5]; 411 412 memcpy(substr, rp, 4); 413 substr[4] = 0; 414 *wp = simple_strtoul(substr, NULL, 16); 415 416 rp += 4; 417 wp++; 418 if (wp - buffer > BASE_WIDTH) 419 break; 420 } 421 422 for (k = 0; k < count; ++k) { 423 unsigned offset = 424 y * BASE_WIDTH + x + k * (wp - buffer); 425 osd_write_videomem(screen, offset, buffer, 426 wp - buffer); 427 } 428 } 429 430 return 0; 431 } 432 433 U_BOOT_CMD( 434 osdw, 5, 0, osd_write, 435 "write 16-bit hex encoded buffer to osd memory", 436 "pos_x pos_y buffer count\n" 437 ); 438 439 U_BOOT_CMD( 440 osdp, 5, 0, osd_print, 441 "write ASCII buffer to osd memory", 442 "pos_x pos_y color text\n" 443 ); 444