board/samsung/universal_c210/universal.c

   1 /*
   2  *  Copyright (C) 2010 Samsung Electronics
   3  *  Minkyu Kang <mk7.kang@samsung.com>
   4  *  Kyungmin Park <kyungmin.park@samsung.com>
   5  *
   6  * See file CREDITS for list of people who contributed to this
   7  * project.
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License as
  11  * published by the Free Software Foundation; either version 2 of
  12  * the License, or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  22  * MA 02111-1307 USA
  23  */
  24
  25 #include <common.h>
  26 #include <spi.h>
  27 #include <lcd.h>
  28 #include <asm/io.h>
  29 #include <asm/gpio.h>
  30 #include <asm/arch/adc.h>
  31 #include <asm/arch/gpio.h>
  32 #include <asm/arch/mmc.h>
  33 #include <asm/arch/pinmux.h>
  34 #include <asm/arch/watchdog.h>
  35 #include <libtizen.h>
  36 #include <ld9040.h>
  37 #include <power/pmic.h>
  38 #include <usb/s3c_udc.h>
  39 #include <asm/arch/cpu.h>
  40 #include <power/max8998_pmic.h>
  41
  42 DECLARE_GLOBAL_DATA_PTR;
  43
  44 struct exynos4_gpio_part1 *gpio1;
  45 struct exynos4_gpio_part2 *gpio2;
  46 unsigned int board_rev;
  47
  48 u32 get_board_rev(void)
  49 {
  50         return board_rev;
  51 }
  52
  53 static int get_hwrev(void)
  54 {
  55         return board_rev & 0xFF;
  56 }
  57
  58 static void init_pmic_lcd(void);
  59
  60 int power_init_board(void)
  61 {
  62         int ret;
  63
  64         ret = pmic_init(I2C_5);
  65         if (ret)
  66                 return ret;
  67
  68         init_pmic_lcd();
  69
  70         return 0;
  71 }
  72
  73 int dram_init(void)
  74 {
  75         gd->ram_size = get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE) +
  76                 get_ram_size((long *)PHYS_SDRAM_2, PHYS_SDRAM_2_SIZE);
  77
  78         return 0;
  79 }
  80
  81 void dram_init_banksize(void)
  82 {
  83         gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
  84         gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
  85         gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
  86         gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE;
  87 }
  88
  89 static unsigned short get_adc_value(int channel)
  90 {
  91         struct s5p_adc *adc = (struct s5p_adc *)samsung_get_base_adc();
  92         unsigned short ret = 0;
  93         unsigned int reg;
  94         unsigned int loop = 0;
  95
  96         writel(channel & 0xF, &adc->adcmux);
  97         writel((1 << 14) | (49 << 6), &adc->adccon);
  98         writel(1000 & 0xffff, &adc->adcdly);
  99         writel(readl(&adc->adccon) | (1 << 16), &adc->adccon); /* 12 bit */
 100         udelay(10);
 101         writel(readl(&adc->adccon) | (1 << 0), &adc->adccon); /* Enable */
 102         udelay(10);
 103
 104         do {
 105                 udelay(1);
 106                 reg = readl(&adc->adccon);
 107         } while (!(reg & (1 << 15)) && (loop++ < 1000));
 108
 109         ret = readl(&adc->adcdat0) & 0xFFF;
 110
 111         return ret;
 112 }
 113
 114 static int adc_power_control(int on)
 115 {
 116         int ret;
 117         struct pmic *p = pmic_get("MAX8998_PMIC");
 118         if (!p)
 119                 return -ENODEV;
 120
 121         if (pmic_probe(p))
 122                 return -1;
 123
 124         ret = pmic_set_output(p,
 125                               MAX8998_REG_ONOFF1,
 126                               MAX8998_LDO4, !!on);
 127
 128         return ret;
 129 }
 130
 131 static unsigned int get_hw_revision(void)
 132 {
 133         int hwrev, mode0, mode1;
 134
 135         adc_power_control(1);
 136
 137         mode0 = get_adc_value(1);               /* HWREV_MODE0 */
 138         mode1 = get_adc_value(2);               /* HWREV_MODE1 */
 139
 140         /*
 141          * XXX Always set the default hwrev as the latest board
 142          * ADC = (voltage) / 3.3 * 4096
 143          */
 144         hwrev = 3;
 145
 146 #define IS_RANGE(x, min, max)   ((x) > (min) && (x) < (max))
 147         if (IS_RANGE(mode0, 80, 200) && IS_RANGE(mode1, 80, 200))
 148                 hwrev = 0x0;            /* 0.01V        0.01V */
 149         if (IS_RANGE(mode0, 750, 1000) && IS_RANGE(mode1, 80, 200))
 150                 hwrev = 0x1;            /* 610mV        0.01V */
 151         if (IS_RANGE(mode0, 1300, 1700) && IS_RANGE(mode1, 80, 200))
 152                 hwrev = 0x2;            /* 1.16V        0.01V */
 153         if (IS_RANGE(mode0, 2000, 2400) && IS_RANGE(mode1, 80, 200))
 154                 hwrev = 0x3;            /* 1.79V        0.01V */
 155 #undef IS_RANGE
 156
 157         debug("mode0: %d, mode1: %d, hwrev 0x%x\n", mode0, mode1, hwrev);
 158
 159         adc_power_control(0);
 160
 161         return hwrev;
 162 }
 163
 164 static void check_hw_revision(void)
 165 {
 166         int hwrev;
 167
 168         hwrev = get_hw_revision();
 169
 170         board_rev |= hwrev;
 171 }
 172
 173 #ifdef CONFIG_DISPLAY_BOARDINFO
 174 int checkboard(void)
 175 {
 176         puts("Board:\tUniversal C210\n");
 177         return 0;
 178 }
 179 #endif
 180
 181 #ifdef CONFIG_GENERIC_MMC
 182 int board_mmc_init(bd_t *bis)
 183 {
 184         int err;
 185
 186         switch (get_hwrev()) {
 187         case 0:
 188                 /*
 189                  * Set the low to enable LDO_EN
 190                  * But when you use the test board for eMMC booting
 191                  * you should set it HIGH since it removes the inverter
 192                  */
 193                 /* MASSMEMORY_EN: XMDMDATA_6: GPE3[6] */
 194                 s5p_gpio_direction_output(&gpio1->e3, 6, 0);
 195                 break;
 196         default:
 197                 /*
 198                  * Default reset state is High and there's no inverter
 199                  * But set it as HIGH to ensure
 200                  */
 201                 /* MASSMEMORY_EN: XMDMADDR_3: GPE1[3] */
 202                 s5p_gpio_direction_output(&gpio1->e1, 3, 1);
 203                 break;
 204         }
 205
 206         /*
 207          * MMC device init
 208          * mmc0  : eMMC (8-bit buswidth)
 209          * mmc2  : SD card (4-bit buswidth)
 210          */
 211         err = exynos_pinmux_config(PERIPH_ID_SDMMC0, PINMUX_FLAG_8BIT_MODE);
 212         if (err)
 213                 debug("SDMMC0 not configured\n");
 214         else
 215                 err = s5p_mmc_init(0, 8);
 216
 217         /* T-flash detect */
 218         s5p_gpio_cfg_pin(&gpio2->x3, 4, 0xf);
 219         s5p_gpio_set_pull(&gpio2->x3, 4, GPIO_PULL_UP);
 220
 221         /*
 222          * Check the T-flash  detect pin
 223          * GPX3[4] T-flash detect pin
 224          */
 225         if (!s5p_gpio_get_value(&gpio2->x3, 4)) {
 226                 err = exynos_pinmux_config(PERIPH_ID_SDMMC2, PINMUX_FLAG_NONE);
 227                 if (err)
 228                         debug("SDMMC2 not configured\n");
 229                 else
 230                         err = s5p_mmc_init(2, 4);
 231         }
 232
 233         return err;
 234
 235 }
 236 #endif
 237
 238 #ifdef CONFIG_USB_GADGET
 239 static int s5pc210_phy_control(int on)
 240 {
 241         int ret = 0;
 242         struct pmic *p = pmic_get("MAX8998_PMIC");
 243         if (!p)
 244                 return -ENODEV;
 245
 246         if (pmic_probe(p))
 247                 return -1;
 248
 249         if (on) {
 250                 ret |= pmic_set_output(p,
 251                                        MAX8998_REG_BUCK_ACTIVE_DISCHARGE3,
 252                                        MAX8998_SAFEOUT1, LDO_ON);
 253                 ret |= pmic_set_output(p, MAX8998_REG_ONOFF1,
 254                                       MAX8998_LDO3, LDO_ON);
 255                 ret |= pmic_set_output(p, MAX8998_REG_ONOFF2,
 256                                       MAX8998_LDO8, LDO_ON);
 257
 258         } else {
 259                 ret |= pmic_set_output(p, MAX8998_REG_ONOFF2,
 260                                       MAX8998_LDO8, LDO_OFF);
 261                 ret |= pmic_set_output(p, MAX8998_REG_ONOFF1,
 262                                       MAX8998_LDO3, LDO_OFF);
 263                 ret |= pmic_set_output(p,
 264                                        MAX8998_REG_BUCK_ACTIVE_DISCHARGE3,
 265                                        MAX8998_SAFEOUT1, LDO_OFF);
 266         }
 267
 268         if (ret) {
 269                 puts("MAX8998 LDO setting error!\n");
 270                 return -1;
 271         }
 272
 273         return 0;
 274 }
 275
 276 struct s3c_plat_otg_data s5pc210_otg_data = {
 277         .phy_control = s5pc210_phy_control,
 278         .regs_phy = EXYNOS4_USBPHY_BASE,
 279         .regs_otg = EXYNOS4_USBOTG_BASE,
 280         .usb_phy_ctrl = EXYNOS4_USBPHY_CONTROL,
 281         .usb_flags = PHY0_SLEEP,
 282 };
 283 #endif
 284
 285 int board_early_init_f(void)
 286 {
 287         wdt_stop();
 288
 289         return 0;
 290 }
 291
 292 #ifdef CONFIG_SOFT_SPI
 293 static void soft_spi_init(void)
 294 {
 295         gpio_direction_output(CONFIG_SOFT_SPI_GPIO_SCLK,
 296                 CONFIG_SOFT_SPI_MODE & SPI_CPOL);
 297         gpio_direction_output(CONFIG_SOFT_SPI_GPIO_MOSI, 1);
 298         gpio_direction_input(CONFIG_SOFT_SPI_GPIO_MISO);
 299         gpio_direction_output(CONFIG_SOFT_SPI_GPIO_CS,
 300                 !(CONFIG_SOFT_SPI_MODE & SPI_CS_HIGH));
 301 }
 302
 303 void spi_cs_activate(struct spi_slave *slave)
 304 {
 305         gpio_set_value(CONFIG_SOFT_SPI_GPIO_CS,
 306                 !(CONFIG_SOFT_SPI_MODE & SPI_CS_HIGH));
 307         SPI_SCL(1);
 308         gpio_set_value(CONFIG_SOFT_SPI_GPIO_CS,
 309                 CONFIG_SOFT_SPI_MODE & SPI_CS_HIGH);
 310 }
 311
 312 void spi_cs_deactivate(struct spi_slave *slave)
 313 {
 314         gpio_set_value(CONFIG_SOFT_SPI_GPIO_CS,
 315                 !(CONFIG_SOFT_SPI_MODE & SPI_CS_HIGH));
 316 }
 317
 318 int  spi_cs_is_valid(unsigned int bus, unsigned int cs)
 319 {
 320         return bus == 0 && cs == 0;
 321 }
 322
 323 void universal_spi_scl(int bit)
 324 {
 325         gpio_set_value(CONFIG_SOFT_SPI_GPIO_SCLK, bit);
 326 }
 327
 328 void universal_spi_sda(int bit)
 329 {
 330         gpio_set_value(CONFIG_SOFT_SPI_GPIO_MOSI, bit);
 331 }
 332
 333 int universal_spi_read(void)
 334 {
 335         return gpio_get_value(CONFIG_SOFT_SPI_GPIO_MISO);
 336 }
 337 #endif
 338
 339 static void init_pmic_lcd(void)
 340 {
 341         unsigned char val;
 342         int ret = 0;
 343
 344         struct pmic *p = pmic_get("MAX8998_PMIC");
 345
 346         if (!p)
 347                 return;
 348
 349         if (pmic_probe(p))
 350                 return;
 351
 352         /* LDO7 1.8V */
 353         val = 0x02; /* (1800 - 1600) / 100; */
 354         ret |= pmic_reg_write(p,  MAX8998_REG_LDO7, val);
 355
 356         /* LDO17 3.0V */
 357         val = 0xe; /* (3000 - 1600) / 100; */
 358         ret |= pmic_reg_write(p,  MAX8998_REG_LDO17, val);
 359
 360         /* Disable unneeded regulators */
 361         /*
 362          * ONOFF1
 363          * Buck1 ON, Buck2 OFF, Buck3 ON, Buck4 ON
 364          * LDO2 ON, LDO3 OFF, LDO4 OFF, LDO5 ON
 365          */
 366         val = 0xB9;
 367         ret |= pmic_reg_write(p,  MAX8998_REG_ONOFF1, val);
 368
 369         /* ONOFF2
 370          * LDO6 OFF, LDO7 ON, LDO8 OFF, LDO9 ON,
 371          * LDO10 OFF, LDO11 OFF, LDO12 OFF, LDO13 OFF
 372          */
 373         val = 0x50;
 374         ret |= pmic_reg_write(p,  MAX8998_REG_ONOFF2, val);
 375
 376         /* ONOFF3
 377          * LDO14 OFF, LDO15 OFF, LGO16 OFF, LDO17 OFF
 378          * EPWRHOLD OFF, EBATTMON OFF, ELBCNFG2 OFF, ELBCNFG1 OFF
 379          */
 380         val = 0x00;
 381         ret |= pmic_reg_write(p,  MAX8998_REG_ONOFF3, val);
 382
 383         if (ret)
 384                 puts("LCD pmic initialisation error!\n");
 385 }
 386
 387 void exynos_cfg_lcd_gpio(void)
 388 {
 389         unsigned int i, f3_end = 4;
 390
 391         for (i = 0; i < 8; i++) {
 392                 /* set GPF0,1,2[0:7] for RGB Interface and Data lines (32bit) */
 393                 s5p_gpio_cfg_pin(&gpio1->f0, i, GPIO_FUNC(2));
 394                 s5p_gpio_cfg_pin(&gpio1->f1, i, GPIO_FUNC(2));
 395                 s5p_gpio_cfg_pin(&gpio1->f2, i, GPIO_FUNC(2));
 396                 /* pull-up/down disable */
 397                 s5p_gpio_set_pull(&gpio1->f0, i, GPIO_PULL_NONE);
 398                 s5p_gpio_set_pull(&gpio1->f1, i, GPIO_PULL_NONE);
 399                 s5p_gpio_set_pull(&gpio1->f2, i, GPIO_PULL_NONE);
 400
 401                 /* drive strength to max (24bit) */
 402                 s5p_gpio_set_drv(&gpio1->f0, i, GPIO_DRV_4X);
 403                 s5p_gpio_set_rate(&gpio1->f0, i, GPIO_DRV_SLOW);
 404                 s5p_gpio_set_drv(&gpio1->f1, i, GPIO_DRV_4X);
 405                 s5p_gpio_set_rate(&gpio1->f1, i, GPIO_DRV_SLOW);
 406                 s5p_gpio_set_drv(&gpio1->f2, i, GPIO_DRV_4X);
 407                 s5p_gpio_set_rate(&gpio1->f0, i, GPIO_DRV_SLOW);
 408         }
 409
 410         for (i = 0; i < f3_end; i++) {
 411                 /* set GPF3[0:3] for RGB Interface and Data lines (32bit) */
 412                 s5p_gpio_cfg_pin(&gpio1->f3, i, GPIO_FUNC(2));
 413                 /* pull-up/down disable */
 414                 s5p_gpio_set_pull(&gpio1->f3, i, GPIO_PULL_NONE);
 415                 /* drive strength to max (24bit) */
 416                 s5p_gpio_set_drv(&gpio1->f3, i, GPIO_DRV_4X);
 417                 s5p_gpio_set_rate(&gpio1->f3, i, GPIO_DRV_SLOW);
 418         }
 419
 420         /* gpio pad configuration for LCD reset. */
 421         s5p_gpio_cfg_pin(&gpio2->y4, 5, GPIO_OUTPUT);
 422
 423         spi_init();
 424 }
 425
 426 void exynos_reset_lcd(void)
 427 {
 428         s5p_gpio_set_value(&gpio2->y4, 5, 1);
 429         udelay(10000);
 430         s5p_gpio_set_value(&gpio2->y4, 5, 0);
 431         udelay(10000);
 432         s5p_gpio_set_value(&gpio2->y4, 5, 1);
 433         udelay(100);
 434 }
 435
 436 void exynos_lcd_power_on(void)
 437 {
 438         struct pmic *p = pmic_get("MAX8998_PMIC");
 439
 440         if (!p)
 441                 return;
 442
 443         if (pmic_probe(p))
 444                 return;
 445
 446         pmic_set_output(p, MAX8998_REG_ONOFF3, MAX8998_LDO17, LDO_ON);
 447         pmic_set_output(p, MAX8998_REG_ONOFF2, MAX8998_LDO7, LDO_ON);
 448 }
 449
 450 vidinfo_t panel_info = {
 451         .vl_freq        = 60,
 452         .vl_col         = 480,
 453         .vl_row         = 800,
 454         .vl_width       = 480,
 455         .vl_height      = 800,
 456         .vl_clkp        = CONFIG_SYS_HIGH,
 457         .vl_hsp         = CONFIG_SYS_HIGH,
 458         .vl_vsp         = CONFIG_SYS_HIGH,
 459         .vl_dp          = CONFIG_SYS_HIGH,
 460
 461         .vl_bpix        = 5,    /* Bits per pixel */
 462
 463         /* LD9040 LCD Panel */
 464         .vl_hspw        = 2,
 465         .vl_hbpd        = 16,
 466         .vl_hfpd        = 16,
 467
 468         .vl_vspw        = 2,
 469         .vl_vbpd        = 8,
 470         .vl_vfpd        = 8,
 471         .vl_cmd_allow_len = 0xf,
 472
 473         .win_id         = 0,
 474         .dual_lcd_enabled = 0,
 475
 476         .init_delay     = 0,
 477         .power_on_delay = 10000,
 478         .reset_delay    = 10000,
 479         .interface_mode = FIMD_RGB_INTERFACE,
 480         .mipi_enabled   = 0,
 481 };
 482
 483 void exynos_cfg_ldo(void)
 484 {
 485         ld9040_cfg_ldo();
 486 }
 487
 488 void exynos_enable_ldo(unsigned int onoff)
 489 {
 490         ld9040_enable_ldo(onoff);
 491 }
 492
 493 void init_panel_info(vidinfo_t *vid)
 494 {
 495         vid->logo_on    = 1;
 496         vid->resolution = HD_RESOLUTION;
 497         vid->rgb_mode   = MODE_RGB_P;
 498
 499 #ifdef CONFIG_TIZEN
 500         get_tizen_logo_info(vid);
 501 #endif
 502
 503         /* for LD9040. */
 504         vid->pclk_name = 1;     /* MPLL */
 505         vid->sclk_div = 1;
 506
 507         setenv("lcdinfo", "lcd=ld9040");
 508 }
 509
 510 int board_init(void)
 511 {
 512         gpio1 = (struct exynos4_gpio_part1 *) EXYNOS4_GPIO_PART1_BASE;
 513         gpio2 = (struct exynos4_gpio_part2 *) EXYNOS4_GPIO_PART2_BASE;
 514
 515         gd->bd->bi_arch_number = MACH_TYPE_UNIVERSAL_C210;
 516         gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
 517
 518 #ifdef CONFIG_SOFT_SPI
 519         soft_spi_init();
 520 #endif
 521         check_hw_revision();
 522         printf("HW Revision:\t0x%x\n", board_rev);
 523
 524         return 0;
 525 }