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/gpio.h> 16 #include <asm/arch/pinmux.h> 17 #include <asm/arch/watchdog.h> 18 #include <ld9040.h> 19 #include <power/pmic.h> 20 #include <usb.h> 21 #include <usb/s3c_udc.h> 22 #include <asm/arch/cpu.h> 23 #include <power/max8998_pmic.h> 24 #include <libtizen.h> 25 #include <samsung/misc.h> 26 #include <usb_mass_storage.h> 27 28 DECLARE_GLOBAL_DATA_PTR; 29 30 unsigned int board_rev; 31 32 u32 get_board_rev(void) 33 { 34 return board_rev; 35 } 36 37 static int get_hwrev(void) 38 { 39 return board_rev & 0xFF; 40 } 41 42 static void init_pmic_lcd(void); 43 44 int exynos_power_init(void) 45 { 46 int ret; 47 48 /* 49 * For PMIC the I2C bus is named as I2C5, but it is connected 50 * to logical I2C adapter 0 51 */ 52 ret = pmic_init(I2C_0); 53 if (ret) 54 return ret; 55 56 init_pmic_lcd(); 57 58 return 0; 59 } 60 61 static unsigned short get_adc_value(int channel) 62 { 63 struct s5p_adc *adc = (struct s5p_adc *)samsung_get_base_adc(); 64 unsigned short ret = 0; 65 unsigned int reg; 66 unsigned int loop = 0; 67 68 writel(channel & 0xF, &adc->adcmux); 69 writel((1 << 14) | (49 << 6), &adc->adccon); 70 writel(1000 & 0xffff, &adc->adcdly); 71 writel(readl(&adc->adccon) | (1 << 16), &adc->adccon); /* 12 bit */ 72 udelay(10); 73 writel(readl(&adc->adccon) | (1 << 0), &adc->adccon); /* Enable */ 74 udelay(10); 75 76 do { 77 udelay(1); 78 reg = readl(&adc->adccon); 79 } while (!(reg & (1 << 15)) && (loop++ < 1000)); 80 81 ret = readl(&adc->adcdat0) & 0xFFF; 82 83 return ret; 84 } 85 86 static int adc_power_control(int on) 87 { 88 int ret; 89 struct pmic *p = pmic_get("MAX8998_PMIC"); 90 if (!p) 91 return -ENODEV; 92 93 if (pmic_probe(p)) 94 return -1; 95 96 ret = pmic_set_output(p, 97 MAX8998_REG_ONOFF1, 98 MAX8998_LDO4, !!on); 99 100 return ret; 101 } 102 103 static unsigned int get_hw_revision(void) 104 { 105 int hwrev, mode0, mode1; 106 107 adc_power_control(1); 108 109 mode0 = get_adc_value(1); /* HWREV_MODE0 */ 110 mode1 = get_adc_value(2); /* HWREV_MODE1 */ 111 112 /* 113 * XXX Always set the default hwrev as the latest board 114 * ADC = (voltage) / 3.3 * 4096 115 */ 116 hwrev = 3; 117 118 #define IS_RANGE(x, min, max) ((x) > (min) && (x) < (max)) 119 if (IS_RANGE(mode0, 80, 200) && IS_RANGE(mode1, 80, 200)) 120 hwrev = 0x0; /* 0.01V 0.01V */ 121 if (IS_RANGE(mode0, 750, 1000) && IS_RANGE(mode1, 80, 200)) 122 hwrev = 0x1; /* 610mV 0.01V */ 123 if (IS_RANGE(mode0, 1300, 1700) && IS_RANGE(mode1, 80, 200)) 124 hwrev = 0x2; /* 1.16V 0.01V */ 125 if (IS_RANGE(mode0, 2000, 2400) && IS_RANGE(mode1, 80, 200)) 126 hwrev = 0x3; /* 1.79V 0.01V */ 127 #undef IS_RANGE 128 129 debug("mode0: %d, mode1: %d, hwrev 0x%x\n", mode0, mode1, hwrev); 130 131 adc_power_control(0); 132 133 return hwrev; 134 } 135 136 static void check_hw_revision(void) 137 { 138 int hwrev; 139 140 hwrev = get_hw_revision(); 141 142 board_rev |= hwrev; 143 } 144 145 #ifdef CONFIG_USB_GADGET 146 static int s5pc210_phy_control(int on) 147 { 148 int ret = 0; 149 struct pmic *p = pmic_get("MAX8998_PMIC"); 150 if (!p) 151 return -ENODEV; 152 153 if (pmic_probe(p)) 154 return -1; 155 156 if (on) { 157 ret |= pmic_set_output(p, 158 MAX8998_REG_BUCK_ACTIVE_DISCHARGE3, 159 MAX8998_SAFEOUT1, LDO_ON); 160 ret |= pmic_set_output(p, MAX8998_REG_ONOFF1, 161 MAX8998_LDO3, LDO_ON); 162 ret |= pmic_set_output(p, MAX8998_REG_ONOFF2, 163 MAX8998_LDO8, LDO_ON); 164 165 } else { 166 ret |= pmic_set_output(p, MAX8998_REG_ONOFF2, 167 MAX8998_LDO8, LDO_OFF); 168 ret |= pmic_set_output(p, MAX8998_REG_ONOFF1, 169 MAX8998_LDO3, LDO_OFF); 170 ret |= pmic_set_output(p, 171 MAX8998_REG_BUCK_ACTIVE_DISCHARGE3, 172 MAX8998_SAFEOUT1, LDO_OFF); 173 } 174 175 if (ret) { 176 puts("MAX8998 LDO setting error!\n"); 177 return -1; 178 } 179 180 return 0; 181 } 182 183 struct s3c_plat_otg_data s5pc210_otg_data = { 184 .phy_control = s5pc210_phy_control, 185 .regs_phy = EXYNOS4_USBPHY_BASE, 186 .regs_otg = EXYNOS4_USBOTG_BASE, 187 .usb_phy_ctrl = EXYNOS4_USBPHY_CONTROL, 188 .usb_flags = PHY0_SLEEP, 189 }; 190 #endif 191 192 int board_usb_init(int index, enum usb_init_type init) 193 { 194 debug("USB_udc_probe\n"); 195 return s3c_udc_probe(&s5pc210_otg_data); 196 } 197 198 #ifdef CONFIG_USB_CABLE_CHECK 199 int usb_cable_connected(void) 200 { 201 return 0; 202 } 203 #endif 204 205 int exynos_early_init_f(void) 206 { 207 wdt_stop(); 208 209 return 0; 210 } 211 212 #ifdef CONFIG_SOFT_SPI 213 static void soft_spi_init(void) 214 { 215 gpio_direction_output(CONFIG_SOFT_SPI_GPIO_SCLK, 216 CONFIG_SOFT_SPI_MODE & SPI_CPOL); 217 gpio_direction_output(CONFIG_SOFT_SPI_GPIO_MOSI, 1); 218 gpio_direction_input(CONFIG_SOFT_SPI_GPIO_MISO); 219 gpio_direction_output(CONFIG_SOFT_SPI_GPIO_CS, 220 !(CONFIG_SOFT_SPI_MODE & SPI_CS_HIGH)); 221 } 222 223 void spi_cs_activate(struct spi_slave *slave) 224 { 225 gpio_set_value(CONFIG_SOFT_SPI_GPIO_CS, 226 !(CONFIG_SOFT_SPI_MODE & SPI_CS_HIGH)); 227 SPI_SCL(1); 228 gpio_set_value(CONFIG_SOFT_SPI_GPIO_CS, 229 CONFIG_SOFT_SPI_MODE & SPI_CS_HIGH); 230 } 231 232 void spi_cs_deactivate(struct spi_slave *slave) 233 { 234 gpio_set_value(CONFIG_SOFT_SPI_GPIO_CS, 235 !(CONFIG_SOFT_SPI_MODE & SPI_CS_HIGH)); 236 } 237 238 int spi_cs_is_valid(unsigned int bus, unsigned int cs) 239 { 240 return bus == 0 && cs == 0; 241 } 242 243 void universal_spi_scl(int bit) 244 { 245 gpio_set_value(CONFIG_SOFT_SPI_GPIO_SCLK, bit); 246 } 247 248 void universal_spi_sda(int bit) 249 { 250 gpio_set_value(CONFIG_SOFT_SPI_GPIO_MOSI, bit); 251 } 252 253 int universal_spi_read(void) 254 { 255 return gpio_get_value(CONFIG_SOFT_SPI_GPIO_MISO); 256 } 257 #endif 258 259 static void init_pmic_lcd(void) 260 { 261 unsigned char val; 262 int ret = 0; 263 264 struct pmic *p = pmic_get("MAX8998_PMIC"); 265 266 if (!p) 267 return; 268 269 if (pmic_probe(p)) 270 return; 271 272 /* LDO7 1.8V */ 273 val = 0x02; /* (1800 - 1600) / 100; */ 274 ret |= pmic_reg_write(p, MAX8998_REG_LDO7, val); 275 276 /* LDO17 3.0V */ 277 val = 0xe; /* (3000 - 1600) / 100; */ 278 ret |= pmic_reg_write(p, MAX8998_REG_LDO17, val); 279 280 /* Disable unneeded regulators */ 281 /* 282 * ONOFF1 283 * Buck1 ON, Buck2 OFF, Buck3 ON, Buck4 ON 284 * LDO2 ON, LDO3 OFF, LDO4 OFF, LDO5 ON 285 */ 286 val = 0xB9; 287 ret |= pmic_reg_write(p, MAX8998_REG_ONOFF1, val); 288 289 /* ONOFF2 290 * LDO6 OFF, LDO7 ON, LDO8 OFF, LDO9 ON, 291 * LDO10 OFF, LDO11 OFF, LDO12 OFF, LDO13 OFF 292 */ 293 val = 0x50; 294 ret |= pmic_reg_write(p, MAX8998_REG_ONOFF2, val); 295 296 /* ONOFF3 297 * LDO14 OFF, LDO15 OFF, LGO16 OFF, LDO17 OFF 298 * EPWRHOLD OFF, EBATTMON OFF, ELBCNFG2 OFF, ELBCNFG1 OFF 299 */ 300 val = 0x00; 301 ret |= pmic_reg_write(p, MAX8998_REG_ONOFF3, val); 302 303 if (ret) 304 puts("LCD pmic initialisation error!\n"); 305 } 306 307 void exynos_cfg_lcd_gpio(void) 308 { 309 unsigned int i, f3_end = 4; 310 311 for (i = 0; i < 8; i++) { 312 /* set GPF0,1,2[0:7] for RGB Interface and Data lines (32bit) */ 313 gpio_cfg_pin(EXYNOS4_GPIO_F00 + i, S5P_GPIO_FUNC(2)); 314 gpio_cfg_pin(EXYNOS4_GPIO_F10 + i, S5P_GPIO_FUNC(2)); 315 gpio_cfg_pin(EXYNOS4_GPIO_F20 + i, S5P_GPIO_FUNC(2)); 316 /* pull-up/down disable */ 317 gpio_set_pull(EXYNOS4_GPIO_F00 + i, S5P_GPIO_PULL_NONE); 318 gpio_set_pull(EXYNOS4_GPIO_F10 + i, S5P_GPIO_PULL_NONE); 319 gpio_set_pull(EXYNOS4_GPIO_F20 + i, S5P_GPIO_PULL_NONE); 320 321 /* drive strength to max (24bit) */ 322 gpio_set_drv(EXYNOS4_GPIO_F00 + i, S5P_GPIO_DRV_4X); 323 gpio_set_rate(EXYNOS4_GPIO_F00 + i, S5P_GPIO_DRV_SLOW); 324 gpio_set_drv(EXYNOS4_GPIO_F10 + i, S5P_GPIO_DRV_4X); 325 gpio_set_rate(EXYNOS4_GPIO_F10 + i, S5P_GPIO_DRV_SLOW); 326 gpio_set_drv(EXYNOS4_GPIO_F20 + i, S5P_GPIO_DRV_4X); 327 gpio_set_rate(EXYNOS4_GPIO_F00 + i, S5P_GPIO_DRV_SLOW); 328 } 329 330 for (i = EXYNOS4_GPIO_F30; i < (EXYNOS4_GPIO_F30 + f3_end); i++) { 331 /* set GPF3[0:3] for RGB Interface and Data lines (32bit) */ 332 gpio_cfg_pin(i, S5P_GPIO_FUNC(2)); 333 /* pull-up/down disable */ 334 gpio_set_pull(i, S5P_GPIO_PULL_NONE); 335 /* drive strength to max (24bit) */ 336 gpio_set_drv(i, S5P_GPIO_DRV_4X); 337 gpio_set_rate(i, S5P_GPIO_DRV_SLOW); 338 } 339 340 /* gpio pad configuration for LCD reset. */ 341 gpio_cfg_pin(EXYNOS4_GPIO_Y45, S5P_GPIO_OUTPUT); 342 343 spi_init(); 344 } 345 346 int mipi_power(void) 347 { 348 return 0; 349 } 350 351 void exynos_reset_lcd(void) 352 { 353 gpio_set_value(EXYNOS4_GPIO_Y45, 1); 354 udelay(10000); 355 gpio_set_value(EXYNOS4_GPIO_Y45, 0); 356 udelay(10000); 357 gpio_set_value(EXYNOS4_GPIO_Y45, 1); 358 udelay(100); 359 } 360 361 void exynos_lcd_power_on(void) 362 { 363 struct pmic *p = pmic_get("MAX8998_PMIC"); 364 365 if (!p) 366 return; 367 368 if (pmic_probe(p)) 369 return; 370 371 pmic_set_output(p, MAX8998_REG_ONOFF3, MAX8998_LDO17, LDO_ON); 372 pmic_set_output(p, MAX8998_REG_ONOFF2, MAX8998_LDO7, LDO_ON); 373 } 374 375 void exynos_cfg_ldo(void) 376 { 377 ld9040_cfg_ldo(); 378 } 379 380 void exynos_enable_ldo(unsigned int onoff) 381 { 382 ld9040_enable_ldo(onoff); 383 } 384 385 int exynos_init(void) 386 { 387 gd->bd->bi_arch_number = MACH_TYPE_UNIVERSAL_C210; 388 389 switch (get_hwrev()) { 390 case 0: 391 /* 392 * Set the low to enable LDO_EN 393 * But when you use the test board for eMMC booting 394 * you should set it HIGH since it removes the inverter 395 */ 396 /* MASSMEMORY_EN: XMDMDATA_6: GPE3[6] */ 397 gpio_direction_output(EXYNOS4_GPIO_E36, 0); 398 break; 399 default: 400 /* 401 * Default reset state is High and there's no inverter 402 * But set it as HIGH to ensure 403 */ 404 /* MASSMEMORY_EN: XMDMADDR_3: GPE1[3] */ 405 gpio_direction_output(EXYNOS4_GPIO_E13, 1); 406 break; 407 } 408 409 #ifdef CONFIG_SOFT_SPI 410 soft_spi_init(); 411 #endif 412 check_hw_revision(); 413 printf("HW Revision:\t0x%x\n", board_rev); 414 415 return 0; 416 } 417 418 void exynos_lcd_misc_init(vidinfo_t *vid) 419 { 420 #ifdef CONFIG_TIZEN 421 get_tizen_logo_info(vid); 422 #endif 423 424 /* for LD9040. */ 425 vid->pclk_name = 1; /* MPLL */ 426 vid->sclk_div = 1; 427 428 setenv("lcdinfo", "lcd=ld9040"); 429 } 430