1 /* 2 * Copyright (C) 2010 Samsung Electronics 3 * Minkyu Kang <mk7.kang@samsung.com> 4 * Kyungmin Park <kyungmin.park@samsung.com> 5 * 6 * SPDX-License-Identifier: GPL-2.0+ 7 */ 8 9 #include <common.h> 10 #include <spi.h> 11 #include <lcd.h> 12 #include <asm/io.h> 13 #include <asm/gpio.h> 14 #include <asm/arch/adc.h> 15 #include <asm/arch/pinmux.h> 16 #include <asm/arch/watchdog.h> 17 #include <ld9040.h> 18 #include <power/pmic.h> 19 #include <usb.h> 20 #include <usb/dwc2_udc.h> 21 #include <asm/arch/cpu.h> 22 #include <power/max8998_pmic.h> 23 #include <libtizen.h> 24 #include <samsung/misc.h> 25 #include <usb_mass_storage.h> 26 27 DECLARE_GLOBAL_DATA_PTR; 28 29 unsigned int board_rev; 30 31 u32 get_board_rev(void) 32 { 33 return board_rev; 34 } 35 36 static int get_hwrev(void) 37 { 38 return board_rev & 0xFF; 39 } 40 41 int exynos_power_init(void) 42 { 43 #ifndef CONFIG_DM_I2C /* TODO(maintainer): Convert to driver model */ 44 int ret; 45 46 /* 47 * For PMIC the I2C bus is named as I2C5, but it is connected 48 * to logical I2C adapter 0 49 */ 50 ret = pmic_init(I2C_0); 51 if (ret) 52 return ret; 53 54 init_pmic_lcd(); 55 #endif 56 return 0; 57 } 58 59 static unsigned short get_adc_value(int channel) 60 { 61 struct s5p_adc *adc = (struct s5p_adc *)samsung_get_base_adc(); 62 unsigned short ret = 0; 63 unsigned int reg; 64 unsigned int loop = 0; 65 66 writel(channel & 0xF, &adc->adcmux); 67 writel((1 << 14) | (49 << 6), &adc->adccon); 68 writel(1000 & 0xffff, &adc->adcdly); 69 writel(readl(&adc->adccon) | (1 << 16), &adc->adccon); /* 12 bit */ 70 udelay(10); 71 writel(readl(&adc->adccon) | (1 << 0), &adc->adccon); /* Enable */ 72 udelay(10); 73 74 do { 75 udelay(1); 76 reg = readl(&adc->adccon); 77 } while (!(reg & (1 << 15)) && (loop++ < 1000)); 78 79 ret = readl(&adc->adcdat0) & 0xFFF; 80 81 return ret; 82 } 83 84 static int adc_power_control(int on) 85 { 86 #ifndef CONFIG_DM_I2C /* TODO(maintainer): Convert to driver model */ 87 int ret; 88 struct pmic *p = pmic_get("MAX8998_PMIC"); 89 if (!p) 90 return -ENODEV; 91 92 if (pmic_probe(p)) 93 return -1; 94 95 ret = pmic_set_output(p, 96 MAX8998_REG_ONOFF1, 97 MAX8998_LDO4, !!on); 98 99 return ret; 100 #else 101 return 0; 102 #endif 103 } 104 105 static unsigned int get_hw_revision(void) 106 { 107 int hwrev, mode0, mode1; 108 109 adc_power_control(1); 110 111 mode0 = get_adc_value(1); /* HWREV_MODE0 */ 112 mode1 = get_adc_value(2); /* HWREV_MODE1 */ 113 114 /* 115 * XXX Always set the default hwrev as the latest board 116 * ADC = (voltage) / 3.3 * 4096 117 */ 118 hwrev = 3; 119 120 #define IS_RANGE(x, min, max) ((x) > (min) && (x) < (max)) 121 if (IS_RANGE(mode0, 80, 200) && IS_RANGE(mode1, 80, 200)) 122 hwrev = 0x0; /* 0.01V 0.01V */ 123 if (IS_RANGE(mode0, 750, 1000) && IS_RANGE(mode1, 80, 200)) 124 hwrev = 0x1; /* 610mV 0.01V */ 125 if (IS_RANGE(mode0, 1300, 1700) && IS_RANGE(mode1, 80, 200)) 126 hwrev = 0x2; /* 1.16V 0.01V */ 127 if (IS_RANGE(mode0, 2000, 2400) && IS_RANGE(mode1, 80, 200)) 128 hwrev = 0x3; /* 1.79V 0.01V */ 129 #undef IS_RANGE 130 131 debug("mode0: %d, mode1: %d, hwrev 0x%x\n", mode0, mode1, hwrev); 132 133 adc_power_control(0); 134 135 return hwrev; 136 } 137 138 static void check_hw_revision(void) 139 { 140 int hwrev; 141 142 hwrev = get_hw_revision(); 143 144 board_rev |= hwrev; 145 } 146 147 #ifdef CONFIG_USB_GADGET 148 static int s5pc210_phy_control(int on) 149 { 150 #ifndef CONFIG_DM_I2C /* TODO(maintainer): Convert to driver model */ 151 int ret = 0; 152 struct pmic *p = pmic_get("MAX8998_PMIC"); 153 if (!p) 154 return -ENODEV; 155 156 if (pmic_probe(p)) 157 return -1; 158 159 if (on) { 160 ret |= pmic_set_output(p, 161 MAX8998_REG_BUCK_ACTIVE_DISCHARGE3, 162 MAX8998_SAFEOUT1, LDO_ON); 163 ret |= pmic_set_output(p, MAX8998_REG_ONOFF1, 164 MAX8998_LDO3, LDO_ON); 165 ret |= pmic_set_output(p, MAX8998_REG_ONOFF2, 166 MAX8998_LDO8, LDO_ON); 167 168 } else { 169 ret |= pmic_set_output(p, MAX8998_REG_ONOFF2, 170 MAX8998_LDO8, LDO_OFF); 171 ret |= pmic_set_output(p, MAX8998_REG_ONOFF1, 172 MAX8998_LDO3, LDO_OFF); 173 ret |= pmic_set_output(p, 174 MAX8998_REG_BUCK_ACTIVE_DISCHARGE3, 175 MAX8998_SAFEOUT1, LDO_OFF); 176 } 177 178 if (ret) { 179 puts("MAX8998 LDO setting error!\n"); 180 return -1; 181 } 182 #endif 183 return 0; 184 } 185 186 struct dwc2_plat_otg_data s5pc210_otg_data = { 187 .phy_control = s5pc210_phy_control, 188 .regs_phy = EXYNOS4_USBPHY_BASE, 189 .regs_otg = EXYNOS4_USBOTG_BASE, 190 .usb_phy_ctrl = EXYNOS4_USBPHY_CONTROL, 191 .usb_flags = PHY0_SLEEP, 192 }; 193 #endif 194 195 int board_usb_init(int index, enum usb_init_type init) 196 { 197 debug("USB_udc_probe\n"); 198 return dwc2_udc_probe(&s5pc210_otg_data); 199 } 200 201 int exynos_early_init_f(void) 202 { 203 wdt_stop(); 204 205 return 0; 206 } 207 208 #ifndef CONFIG_DM_I2C /* TODO(maintainer): Convert to driver model */ 209 static void init_pmic_lcd(void) 210 { 211 unsigned char val; 212 int ret = 0; 213 214 struct pmic *p = pmic_get("MAX8998_PMIC"); 215 216 if (!p) 217 return; 218 219 if (pmic_probe(p)) 220 return; 221 222 /* LDO7 1.8V */ 223 val = 0x02; /* (1800 - 1600) / 100; */ 224 ret |= pmic_reg_write(p, MAX8998_REG_LDO7, val); 225 226 /* LDO17 3.0V */ 227 val = 0xe; /* (3000 - 1600) / 100; */ 228 ret |= pmic_reg_write(p, MAX8998_REG_LDO17, val); 229 230 /* Disable unneeded regulators */ 231 /* 232 * ONOFF1 233 * Buck1 ON, Buck2 OFF, Buck3 ON, Buck4 ON 234 * LDO2 ON, LDO3 OFF, LDO4 OFF, LDO5 ON 235 */ 236 val = 0xB9; 237 ret |= pmic_reg_write(p, MAX8998_REG_ONOFF1, val); 238 239 /* ONOFF2 240 * LDO6 OFF, LDO7 ON, LDO8 OFF, LDO9 ON, 241 * LDO10 OFF, LDO11 OFF, LDO12 OFF, LDO13 OFF 242 */ 243 val = 0x50; 244 ret |= pmic_reg_write(p, MAX8998_REG_ONOFF2, val); 245 246 /* ONOFF3 247 * LDO14 OFF, LDO15 OFF, LGO16 OFF, LDO17 OFF 248 * EPWRHOLD OFF, EBATTMON OFF, ELBCNFG2 OFF, ELBCNFG1 OFF 249 */ 250 val = 0x00; 251 ret |= pmic_reg_write(p, MAX8998_REG_ONOFF3, val); 252 253 if (ret) 254 puts("LCD pmic initialisation error!\n"); 255 } 256 #endif 257 258 void exynos_cfg_lcd_gpio(void) 259 { 260 unsigned int i, f3_end = 4; 261 262 for (i = 0; i < 8; i++) { 263 /* set GPF0,1,2[0:7] for RGB Interface and Data lines (32bit) */ 264 gpio_cfg_pin(EXYNOS4_GPIO_F00 + i, S5P_GPIO_FUNC(2)); 265 gpio_cfg_pin(EXYNOS4_GPIO_F10 + i, S5P_GPIO_FUNC(2)); 266 gpio_cfg_pin(EXYNOS4_GPIO_F20 + i, S5P_GPIO_FUNC(2)); 267 /* pull-up/down disable */ 268 gpio_set_pull(EXYNOS4_GPIO_F00 + i, S5P_GPIO_PULL_NONE); 269 gpio_set_pull(EXYNOS4_GPIO_F10 + i, S5P_GPIO_PULL_NONE); 270 gpio_set_pull(EXYNOS4_GPIO_F20 + i, S5P_GPIO_PULL_NONE); 271 272 /* drive strength to max (24bit) */ 273 gpio_set_drv(EXYNOS4_GPIO_F00 + i, S5P_GPIO_DRV_4X); 274 gpio_set_rate(EXYNOS4_GPIO_F00 + i, S5P_GPIO_DRV_SLOW); 275 gpio_set_drv(EXYNOS4_GPIO_F10 + i, S5P_GPIO_DRV_4X); 276 gpio_set_rate(EXYNOS4_GPIO_F10 + i, S5P_GPIO_DRV_SLOW); 277 gpio_set_drv(EXYNOS4_GPIO_F20 + i, S5P_GPIO_DRV_4X); 278 gpio_set_rate(EXYNOS4_GPIO_F00 + i, S5P_GPIO_DRV_SLOW); 279 } 280 281 for (i = EXYNOS4_GPIO_F30; i < (EXYNOS4_GPIO_F30 + f3_end); i++) { 282 /* set GPF3[0:3] for RGB Interface and Data lines (32bit) */ 283 gpio_cfg_pin(i, S5P_GPIO_FUNC(2)); 284 /* pull-up/down disable */ 285 gpio_set_pull(i, S5P_GPIO_PULL_NONE); 286 /* drive strength to max (24bit) */ 287 gpio_set_drv(i, S5P_GPIO_DRV_4X); 288 gpio_set_rate(i, S5P_GPIO_DRV_SLOW); 289 } 290 291 /* gpio pad configuration for LCD reset. */ 292 gpio_request(EXYNOS4_GPIO_Y45, "lcd_reset"); 293 gpio_cfg_pin(EXYNOS4_GPIO_Y45, S5P_GPIO_OUTPUT); 294 } 295 296 int mipi_power(void) 297 { 298 return 0; 299 } 300 301 void exynos_reset_lcd(void) 302 { 303 gpio_set_value(EXYNOS4_GPIO_Y45, 1); 304 udelay(10000); 305 gpio_set_value(EXYNOS4_GPIO_Y45, 0); 306 udelay(10000); 307 gpio_set_value(EXYNOS4_GPIO_Y45, 1); 308 udelay(100); 309 } 310 311 void exynos_lcd_power_on(void) 312 { 313 #ifndef CONFIG_DM_I2C /* TODO(maintainer): Convert to driver model */ 314 struct pmic *p = pmic_get("MAX8998_PMIC"); 315 316 if (!p) 317 return; 318 319 if (pmic_probe(p)) 320 return; 321 322 pmic_set_output(p, MAX8998_REG_ONOFF3, MAX8998_LDO17, LDO_ON); 323 pmic_set_output(p, MAX8998_REG_ONOFF2, MAX8998_LDO7, LDO_ON); 324 #endif 325 } 326 327 void exynos_cfg_ldo(void) 328 { 329 ld9040_cfg_ldo(); 330 } 331 332 void exynos_enable_ldo(unsigned int onoff) 333 { 334 ld9040_enable_ldo(onoff); 335 } 336 337 int exynos_init(void) 338 { 339 #ifndef CONFIG_DM_I2C /* TODO(maintainer): Convert to driver model */ 340 char buf[16]; 341 #endif 342 gd->bd->bi_arch_number = MACH_TYPE_UNIVERSAL_C210; 343 344 switch (get_hwrev()) { 345 case 0: 346 /* 347 * Set the low to enable LDO_EN 348 * But when you use the test board for eMMC booting 349 * you should set it HIGH since it removes the inverter 350 */ 351 /* MASSMEMORY_EN: XMDMDATA_6: GPE3[6] */ 352 gpio_request(EXYNOS4_GPIO_E36, "ldo_en"); 353 gpio_direction_output(EXYNOS4_GPIO_E36, 0); 354 break; 355 default: 356 /* 357 * Default reset state is High and there's no inverter 358 * But set it as HIGH to ensure 359 */ 360 /* MASSMEMORY_EN: XMDMADDR_3: GPE1[3] */ 361 gpio_request(EXYNOS4_GPIO_E13, "massmemory_en"); 362 gpio_direction_output(EXYNOS4_GPIO_E13, 1); 363 break; 364 } 365 366 #ifndef CONFIG_DM_I2C /* TODO(maintainer): Convert to driver model */ 367 /* Request soft I2C gpios */ 368 strcpy(buf, "soft_i2c_scl"); 369 gpio_request(CONFIG_SOFT_I2C_GPIO_SCL, buf); 370 371 strcpy(buf, "soft_i2c_sda"); 372 gpio_request(CONFIG_SOFT_I2C_GPIO_SDA, buf); 373 #endif 374 check_hw_revision(); 375 printf("HW Revision:\t0x%x\n", board_rev); 376 377 return 0; 378 } 379 380 #ifdef CONFIG_LCD 381 void exynos_lcd_misc_init(vidinfo_t *vid) 382 { 383 #ifdef CONFIG_TIZEN 384 get_tizen_logo_info(vid); 385 #endif 386 387 /* for LD9040. */ 388 vid->pclk_name = 1; /* MPLL */ 389 vid->sclk_div = 1; 390 391 setenv("lcdinfo", "lcd=ld9040"); 392 } 393 #endif 394