drivers/video/s6d16a0x.c

   1 /*
   2  * LCD panel driver for Board based on S5PC100 and S5PC110.
   3  *
   4  * Author: InKi Dae  <inki.dae@samsung.com>
   5  *
   6  * Derived from drivers/video/omap/lcd-apollon.c
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the
  10  * Free Software Foundation; either version 2 of the License, or (at your
  11  * option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, write to the Free Software Foundation, Inc.,
  20  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21  */
  22
  23 #include <common.h>
  24 #include <linux/types.h>
  25 #include <asm/io.h>
  26 #include <asm/arch/cpu.h>
  27 #include <asm/arch/gpio.h>
  28 #include "s5p-spi.h"
  29
  30 /* these machine specific platform data would be setting at universal.c */
  31 struct spi_platform_data *s6d16a0x;
  32
  33 void cs_low_(void)
  34 {
  35         gpio_set_value(s6d16a0x->cs_bank, s6d16a0x->cs_num, 0);
  36 }
  37
  38 void cs_high_(void)
  39 {
  40         gpio_set_value(s6d16a0x->cs_bank, s6d16a0x->cs_num, 1);
  41 }
  42
  43 void clk_low_(void)
  44 {
  45         gpio_set_value(s6d16a0x->clk_bank, s6d16a0x->clk_num, 0);
  46 }
  47
  48 void clk_high_(void)
  49 {
  50         gpio_set_value(s6d16a0x->clk_bank, s6d16a0x->clk_num, 1);
  51 }
  52
  53 void si_low_(void)
  54 {
  55         gpio_set_value(s6d16a0x->si_bank, s6d16a0x->si_num, 0);
  56 }
  57
  58 void si_high_(void)
  59 {
  60         gpio_set_value(s6d16a0x->si_bank, s6d16a0x->si_num, 1);
  61 }
  62
  63 char so_read_(void)
  64 {
  65         return gpio_get_value(s6d16a0x->so_bank, s6d16a0x->so_num);
  66 }
  67
  68 static const unsigned short SEQ_PASSWD2_SET[] = {
  69         0xF1, 0x5A,
  70         DATA_ONLY, 0x5A,
  71
  72         ENDDEF, 0x0000
  73 };
  74
  75 static const unsigned short SEQ_DISCTL_SET[] = {
  76         0xf2, 0x00,
  77         DATA_ONLY, 0x00,
  78         DATA_ONLY, 0x62,
  79         DATA_ONLY, 0x62,
  80         DATA_ONLY, 0x57,
  81         DATA_ONLY, 0x57,
  82         DATA_ONLY, 0x10,
  83         DATA_ONLY, 0x00,
  84         DATA_ONLY, 0x00,
  85
  86         ENDDEF, 0x0000
  87 };
  88
  89 static const unsigned short SEQ_PWRCTL_SET[] = {
  90         0xf3, 0x00,
  91         DATA_ONLY, 0x10,
  92         DATA_ONLY, 0x25,
  93         DATA_ONLY, 0x01,
  94         DATA_ONLY, 0x2D,
  95         DATA_ONLY, 0x2D,
  96         DATA_ONLY, 0x24,
  97         DATA_ONLY, 0x2D,
  98         DATA_ONLY, 0x14,
  99         DATA_ONLY, 0x14,
 100         DATA_ONLY, 0x12,
 101         DATA_ONLY, 0x62,
 102
 103         ENDDEF, 0x0000
 104 };
 105
 106 static const unsigned short SEQ_VCMCTL_SET[] = {
 107         0xf4, 0x00,
 108         DATA_ONLY, 0x23,
 109         DATA_ONLY, 0x00,
 110         DATA_ONLY, 0x4E,
 111         DATA_ONLY, 0x5A,
 112         DATA_ONLY, 0x00,
 113         DATA_ONLY, 0x4E,
 114         DATA_ONLY, 0x5A,
 115         DATA_ONLY, 0x00,
 116         DATA_ONLY, 0x00,
 117
 118         ENDDEF, 0x0000
 119 };
 120
 121 static const unsigned short SEQ_SRCCTL_SET[] = {
 122         0xf5, 0x00,
 123         DATA_ONLY, 0x00,
 124         DATA_ONLY, 0x57,
 125         DATA_ONLY, 0x00,
 126         DATA_ONLY, 0x08,
 127         DATA_ONLY, 0x01,
 128         DATA_ONLY, 0x14,
 129         DATA_ONLY, 0x14,
 130         DATA_ONLY, 0x09,
 131         DATA_ONLY, 0x09,
 132
 133         ENDDEF, 0x0000
 134 };
 135
 136 static const unsigned short SEQ_PANELCTL1_SET[] = {
 137         0xf6, 0x02,
 138         DATA_ONLY, 0x00,
 139         DATA_ONLY, 0x80,
 140         DATA_ONLY, 0x00,
 141         DATA_ONLY, 0x44,
 142         DATA_ONLY, 0x00,
 143
 144         ENDDEF, 0x0000
 145 };
 146
 147 static const unsigned short SEQ_PANELCTL2_SET[] = {
 148         0xf7, 0x00,
 149         DATA_ONLY, 0x01,
 150         DATA_ONLY, 0x00,
 151         DATA_ONLY, 0xF2,
 152         DATA_ONLY, 0x08,
 153         DATA_ONLY, 0x00,
 154         DATA_ONLY, 0x08,
 155         DATA_ONLY, 0x1F,
 156         DATA_ONLY, 0x08,
 157         DATA_ONLY, 0x08,
 158         DATA_ONLY, 0x23,
 159         DATA_ONLY, 0x00,
 160         DATA_ONLY, 0x07,
 161         DATA_ONLY, 0x00,
 162         DATA_ONLY, 0x4B,
 163         DATA_ONLY, 0x00,
 164         DATA_ONLY, 0x8C,
 165
 166         ENDDEF, 0x0000
 167 };
 168
 169 static const unsigned short SEQ_PANELCTL3_SET[] = {
 170         0xf8, 0x00,
 171         DATA_ONLY, 0x01,
 172         DATA_ONLY, 0x00,
 173         DATA_ONLY, 0xF2,
 174         DATA_ONLY, 0x08,
 175         DATA_ONLY, 0x00,
 176         DATA_ONLY, 0x08,
 177         DATA_ONLY, 0x1F,
 178         DATA_ONLY, 0x08,
 179         DATA_ONLY, 0x08,
 180         DATA_ONLY, 0x23,
 181         DATA_ONLY, 0x00,
 182         DATA_ONLY, 0x07,
 183         DATA_ONLY, 0x00,
 184         DATA_ONLY, 0x4B,
 185         DATA_ONLY, 0x00,
 186         DATA_ONLY, 0x8C,
 187
 188         ENDDEF, 0x0000
 189 };
 190
 191 static const unsigned short SEQ_PANELCTL4_SET[] = {
 192         0xf9, 0x00,
 193         DATA_ONLY, 0x08,
 194         DATA_ONLY, 0x00,
 195         DATA_ONLY, 0x01,
 196         DATA_ONLY, 0x00,
 197         DATA_ONLY, 0x05,
 198         DATA_ONLY, 0x00,
 199         DATA_ONLY, 0x04,
 200         DATA_ONLY, 0x00,
 201         DATA_ONLY, 0x0C,
 202         DATA_ONLY, 0x00,
 203         DATA_ONLY, 0x0F,
 204         DATA_ONLY, 0x00,
 205         DATA_ONLY, 0x10,
 206         DATA_ONLY, 0x00,
 207         DATA_ONLY, 0x11,
 208         DATA_ONLY, 0x00,
 209         DATA_ONLY, 0x00,
 210         DATA_ONLY, 0x00,
 211         DATA_ONLY, 0x1F,
 212         DATA_ONLY, 0xFF,
 213         DATA_ONLY, 0xE0,
 214
 215         ENDDEF, 0x0000
 216 };
 217
 218 static const unsigned short SEQ_PGAMMACTL_SET[] = {
 219         0xfa, 0x1E,
 220         DATA_ONLY, 0x35,
 221         DATA_ONLY, 0x2C,
 222         DATA_ONLY, 0x0C,
 223         DATA_ONLY, 0x0E,
 224         DATA_ONLY, 0x0F,
 225         DATA_ONLY, 0x11,
 226         DATA_ONLY, 0x04,
 227         DATA_ONLY, 0x00,
 228         DATA_ONLY, 0x1B,
 229         DATA_ONLY, 0x10,
 230         DATA_ONLY, 0x18,
 231         DATA_ONLY, 0x21,
 232         DATA_ONLY, 0x1F,
 233         DATA_ONLY, 0x1E,
 234         DATA_ONLY, 0x1E,
 235         DATA_ONLY, 0x35,
 236         DATA_ONLY, 0x2C,
 237         DATA_ONLY, 0x0C,
 238         DATA_ONLY, 0x0E,
 239         DATA_ONLY, 0x0F,
 240         DATA_ONLY, 0x11,
 241         DATA_ONLY, 0x04,
 242         DATA_ONLY, 0x01,
 243         DATA_ONLY, 0x1B,
 244         DATA_ONLY, 0x10,
 245         DATA_ONLY, 0x18,
 246         DATA_ONLY, 0x21,
 247         DATA_ONLY, 0x1F,
 248         DATA_ONLY, 0x1E,
 249         DATA_ONLY, 0x23,
 250         DATA_ONLY, 0x35,
 251         DATA_ONLY, 0x2C,
 252         DATA_ONLY, 0x0C,
 253         DATA_ONLY, 0x0E,
 254         DATA_ONLY, 0x0F,
 255         DATA_ONLY, 0x11,
 256         DATA_ONLY, 0x04,
 257         DATA_ONLY, 0x00,
 258         DATA_ONLY, 0x1B,
 259         DATA_ONLY, 0x10,
 260         DATA_ONLY, 0x19,
 261         DATA_ONLY, 0x22,
 262         DATA_ONLY, 0x22,
 263         DATA_ONLY, 0x22,
 264
 265         ENDDEF, 0x0000
 266 };
 267
 268 static const unsigned short SEQ_NGAMMACTL_SET[] = {
 269         0xFB, 0x01,
 270         DATA_ONLY, 0x1C,
 271         DATA_ONLY, 0x1D,
 272         DATA_ONLY, 0x1C,
 273         DATA_ONLY, 0x3B,
 274         DATA_ONLY, 0x43,
 275         DATA_ONLY, 0x4A,
 276         DATA_ONLY, 0x3F,
 277         DATA_ONLY, 0x3A,
 278         DATA_ONLY, 0x54,
 279         DATA_ONLY, 0x4B,
 280         DATA_ONLY, 0x4A,
 281         DATA_ONLY, 0x48,
 282         DATA_ONLY, 0x26,
 283         DATA_ONLY, 0x0D,
 284         DATA_ONLY, 0x01,
 285         DATA_ONLY, 0x1C,
 286         DATA_ONLY, 0x1D,
 287         DATA_ONLY, 0x1C,
 288         DATA_ONLY, 0x3B,
 289         DATA_ONLY, 0x43,
 290         DATA_ONLY, 0x4A,
 291         DATA_ONLY, 0x3F,
 292         DATA_ONLY, 0x39,
 293         DATA_ONLY, 0x54,
 294         DATA_ONLY, 0x4B,
 295         DATA_ONLY, 0x4A,
 296         DATA_ONLY, 0x48,
 297         DATA_ONLY, 0x26,
 298         DATA_ONLY, 0x0D,
 299         DATA_ONLY, 0x01,
 300         DATA_ONLY, 0x17,
 301         DATA_ONLY, 0x18,
 302         DATA_ONLY, 0x19,
 303         DATA_ONLY, 0x39,
 304         DATA_ONLY, 0x43,
 305         DATA_ONLY, 0x4A,
 306         DATA_ONLY, 0x3E,
 307         DATA_ONLY, 0x3A,
 308         DATA_ONLY, 0x54,
 309         DATA_ONLY, 0x4B,
 310         DATA_ONLY, 0x4A,
 311         DATA_ONLY, 0x48,
 312         DATA_ONLY, 0x26,
 313         DATA_ONLY, 0x0D,
 314
 315         ENDDEF, 0x0000
 316 };
 317
 318 static const unsigned short SEQ_CLKCTL3_SET[] = {
 319         0xB7, 0x00,
 320
 321         DATA_ONLY, 0x11,
 322         DATA_ONLY, 0x11,
 323         ENDDEF, 0x0000
 324 };
 325
 326 static const unsigned short SEQ_HOSTCTL1_SET[] = {
 327         0xB8, 0x31,
 328
 329         DATA_ONLY, 0x11,
 330         ENDDEF, 0x0000
 331 };
 332
 333 static const unsigned short SEQ_HOSTCTL2_SET[] = {
 334         0xB9, 0x00,
 335
 336         DATA_ONLY, 0x06,
 337         ENDDEF, 0x0000
 338 };
 339
 340 static const unsigned short SEQ_TEON_SET[] = {
 341         COMMAND_ONLY, 0x35,
 342
 343         ENDDEF, 0x0000
 344 };
 345
 346 static const unsigned short SEQ_CASET[] = {
 347         0x2A, 0x00,
 348
 349         DATA_ONLY, 0x00,
 350         DATA_ONLY, 0x01,
 351         DATA_ONLY, 0x3F,
 352         ENDDEF, 0x0000
 353 };
 354
 355 static const unsigned short SEQ_PASET[] = {
 356         0x2B, 0x00,
 357
 358         DATA_ONLY, 0x00,
 359         DATA_ONLY, 0x01,
 360         DATA_ONLY, 0xDF,
 361         ENDDEF, 0x0000
 362 };
 363
 364 static const unsigned short SEQ_COLMOD[] = {
 365         0x3A, 0x77,
 366         /* 0x36, 0xC4, */       /* MADCTL : Reverse display */
 367
 368         ENDDEF, 0x0000
 369 };
 370
 371 static const unsigned short SEQ_WRCTRLD[] = {
 372         0x53, 0x00,
 373
 374         ENDDEF, 0x0000
 375 };
 376
 377 static const unsigned short SEQ_SLPOUT[] = {
 378         0x11, COMMAND_ONLY,
 379
 380         ENDDEF, 0x0000
 381 };
 382
 383 static const unsigned short SEQ_DISPON[] = {
 384         0x29, COMMAND_ONLY,
 385
 386         ENDDEF, 0x0000
 387 };
 388
 389 static const unsigned short SEQ_DISPOFF[] = {
 390         0x28, COMMAND_ONLY,
 391
 392         ENDDEF, 0x0000
 393 };
 394
 395 unsigned char Delay=1;
 396
 397 static void s6d16a0x_c110_spi_write_byte(unsigned char address, unsigned char command)
 398 {
 399         int     j;
 400         unsigned short data;
 401         data = (address << 8) + command;
 402
 403         cs_high_();
 404         si_high_();
 405         clk_high_();
 406         udelay(Delay);
 407
 408         cs_low_();
 409         udelay(Delay);
 410
 411         for (j = PACKET_LEN; j >= 0; j--)
 412         {
 413                 clk_low_();
 414
 415                 /* data high or low */
 416                 if ((data >> j) & 0x0001)
 417                         si_high_();
 418                 else
 419                         si_low_();
 420
 421                 udelay(Delay);
 422
 423                 clk_high_();
 424                 udelay(Delay);
 425         }
 426
 427         cs_high_();
 428         udelay(Delay);
 429 }
 430
 431 #ifdef UNUSED_FUNCTIONS
 432 static unsigned char s6d16a0x_c110_spi_read_byte(unsigned char select, unsigned char address)
 433 {
 434         int     j;
 435         static unsigned int first = 1;
 436         unsigned char DELAY=1;
 437         unsigned short data = 0;
 438         char command = 0;
 439
 440         data = (select << 8) + address;
 441
 442         cs_high();
 443         si_high();
 444         clk_high();
 445         udelay(DELAY);
 446
 447         clk_low();
 448         udelay(DELAY);
 449
 450         for (j = PACKET_LEN + 8; j >= 0; j--)
 451         {
 452
 453                 if (j > 7) {
 454                         clk_low();
 455
 456                         /* data high or low */
 457                         if ((data >> (j - 8)) & 0x0001)
 458                                 si_high();
 459                         else
 460                                 si_low();
 461
 462                         udelay(DELAY);
 463                         clk_high();
 464                 } else {
 465                         if (first) {
 466                                 gpio_cfg_pin(s6d16a0x->so_bank, s6d16a0x->so_num, GPIO_INPUT);
 467                                 first = 0;
 468                         }
 469
 470                         clk_low();
 471
 472                         if (so_read() & 0x1)
 473                                 command |= 1 << j;
 474                         else
 475                                 command |= 0 << j;
 476
 477                         udelay(DELAY);
 478                         clk_high();
 479                 }
 480
 481                 udelay(DELAY);
 482         }
 483
 484         cs_high();
 485         udelay(DELAY);
 486
 487         gpio_cfg_pin(s6d16a0x->so_bank, s6d16a0x->so_num, GPIO_OUTPUT);
 488
 489         return command;
 490 }
 491 #endif
 492
 493 static void s6d16a0x_spi_write(unsigned char address, unsigned char command)
 494 {
 495         if (address != DATA_ONLY)
 496                 s6d16a0x_c110_spi_write_byte(0x0, address);
 497
 498         if (command != COMMAND_ONLY)
 499                 s6d16a0x_c110_spi_write_byte(0x1, command);
 500 }
 501
 502 static void s6d16a0x_panel_send_sequence(const unsigned short *wbuf)
 503 {
 504         int i = 0;
 505
 506         while ((wbuf[i] & DEFMASK) != ENDDEF) {
 507                 if ((wbuf[i] & DEFMASK) != SLEEPMSEC)
 508                         s6d16a0x_spi_write(wbuf[i], wbuf[i+1]);
 509                 else
 510                         udelay(wbuf[i+1]*1000);
 511                 i += 2;
 512         }
 513 }
 514
 515 void s6d16a0x_cfg_ldo(void)
 516 {
 517         s6d16a0x_panel_send_sequence(SEQ_PASSWD2_SET);
 518         s6d16a0x_panel_send_sequence(SEQ_DISCTL_SET);
 519         s6d16a0x_panel_send_sequence(SEQ_PWRCTL_SET);
 520         s6d16a0x_panel_send_sequence(SEQ_VCMCTL_SET);
 521         s6d16a0x_panel_send_sequence(SEQ_SRCCTL_SET);
 522         s6d16a0x_panel_send_sequence(SEQ_PANELCTL1_SET);
 523         s6d16a0x_panel_send_sequence(SEQ_PANELCTL2_SET);
 524         s6d16a0x_panel_send_sequence(SEQ_PANELCTL3_SET);
 525         s6d16a0x_panel_send_sequence(SEQ_PANELCTL4_SET);
 526         s6d16a0x_panel_send_sequence(SEQ_PGAMMACTL_SET);
 527         s6d16a0x_panel_send_sequence(SEQ_NGAMMACTL_SET);
 528         s6d16a0x_panel_send_sequence(SEQ_CLKCTL3_SET);
 529         s6d16a0x_panel_send_sequence(SEQ_HOSTCTL1_SET);
 530         s6d16a0x_panel_send_sequence(SEQ_HOSTCTL2_SET);
 531         s6d16a0x_panel_send_sequence(SEQ_TEON_SET);
 532         s6d16a0x_panel_send_sequence(SEQ_PASSWD2_SET);
 533         s6d16a0x_panel_send_sequence(SEQ_CASET);
 534         s6d16a0x_panel_send_sequence(SEQ_PASET);
 535         s6d16a0x_panel_send_sequence(SEQ_COLMOD);
 536         s6d16a0x_panel_send_sequence(SEQ_WRCTRLD);
 537         s6d16a0x_panel_send_sequence(SEQ_SLPOUT);
 538         udelay(120000);
 539 }
 540
 541 void s6d16a0x_enable_ldo(unsigned int onoff)
 542 {
 543         if (onoff) {
 544                 s6d16a0x_panel_send_sequence(SEQ_DISPON);
 545         }
 546 }
 547
 548 /* this function would be called at universal.c */
 549 void s6d16a0x_set_platform_data(struct spi_platform_data *pd)
 550 {
 551         if (pd == NULL) {
 552                 printf("pd is NULL.\n");
 553                 return;
 554         }
 555
 556         s6d16a0x = pd;
 557 }
 558