1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * AXP818 driver based on AXP221 driver 4 * 5 * 6 * (C) Copyright 2015 Vishnu Patekar <vishnuptekar0510@gmail.com> 7 * 8 * Based on axp221.c 9 * (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com> 10 * (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl> 11 */ 12 13 #include <common.h> 14 #include <errno.h> 15 #include <asm/arch/gpio.h> 16 #include <asm/arch/pmic_bus.h> 17 #include <axp_pmic.h> 18 19 static u8 axp818_mvolt_to_cfg(int mvolt, int min, int max, int div) 20 { 21 if (mvolt < min) 22 mvolt = min; 23 else if (mvolt > max) 24 mvolt = max; 25 26 return (mvolt - min) / div; 27 } 28 29 int axp_set_dcdc1(unsigned int mvolt) 30 { 31 int ret; 32 u8 cfg = axp818_mvolt_to_cfg(mvolt, 1600, 3400, 100); 33 34 if (mvolt == 0) 35 return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1, 36 AXP818_OUTPUT_CTRL1_DCDC1_EN); 37 38 ret = pmic_bus_write(AXP818_DCDC1_CTRL, cfg); 39 if (ret) 40 return ret; 41 42 return pmic_bus_setbits(AXP818_OUTPUT_CTRL1, 43 AXP818_OUTPUT_CTRL1_DCDC1_EN); 44 } 45 46 int axp_set_dcdc2(unsigned int mvolt) 47 { 48 int ret; 49 u8 cfg; 50 51 if (mvolt >= 1220) 52 cfg = 70 + axp818_mvolt_to_cfg(mvolt, 1220, 1300, 20); 53 else 54 cfg = axp818_mvolt_to_cfg(mvolt, 500, 1200, 10); 55 56 if (mvolt == 0) 57 return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1, 58 AXP818_OUTPUT_CTRL1_DCDC2_EN); 59 60 ret = pmic_bus_write(AXP818_DCDC2_CTRL, cfg); 61 if (ret) 62 return ret; 63 64 return pmic_bus_setbits(AXP818_OUTPUT_CTRL1, 65 AXP818_OUTPUT_CTRL1_DCDC2_EN); 66 } 67 68 int axp_set_dcdc3(unsigned int mvolt) 69 { 70 int ret; 71 u8 cfg; 72 73 if (mvolt >= 1220) 74 cfg = 70 + axp818_mvolt_to_cfg(mvolt, 1220, 1300, 20); 75 else 76 cfg = axp818_mvolt_to_cfg(mvolt, 500, 1200, 10); 77 78 if (mvolt == 0) 79 return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1, 80 AXP818_OUTPUT_CTRL1_DCDC3_EN); 81 82 ret = pmic_bus_write(AXP818_DCDC3_CTRL, cfg); 83 if (ret) 84 return ret; 85 86 return pmic_bus_setbits(AXP818_OUTPUT_CTRL1, 87 AXP818_OUTPUT_CTRL1_DCDC3_EN); 88 } 89 90 int axp_set_dcdc5(unsigned int mvolt) 91 { 92 int ret; 93 u8 cfg; 94 95 if (mvolt >= 1140) 96 cfg = 32 + axp818_mvolt_to_cfg(mvolt, 1140, 1840, 20); 97 else 98 cfg = axp818_mvolt_to_cfg(mvolt, 800, 1120, 10); 99 100 if (mvolt == 0) 101 return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1, 102 AXP818_OUTPUT_CTRL1_DCDC5_EN); 103 104 ret = pmic_bus_write(AXP818_DCDC5_CTRL, cfg); 105 if (ret) 106 return ret; 107 108 return pmic_bus_setbits(AXP818_OUTPUT_CTRL1, 109 AXP818_OUTPUT_CTRL1_DCDC5_EN); 110 } 111 112 int axp_set_aldo(int aldo_num, unsigned int mvolt) 113 { 114 int ret; 115 u8 cfg; 116 117 if (aldo_num < 1 || aldo_num > 3) 118 return -EINVAL; 119 120 if (mvolt == 0) 121 return pmic_bus_clrbits(AXP818_OUTPUT_CTRL3, 122 AXP818_OUTPUT_CTRL3_ALDO1_EN << (aldo_num - 1)); 123 124 cfg = axp818_mvolt_to_cfg(mvolt, 700, 3300, 100); 125 ret = pmic_bus_write(AXP818_ALDO1_CTRL + (aldo_num - 1), cfg); 126 if (ret) 127 return ret; 128 129 return pmic_bus_setbits(AXP818_OUTPUT_CTRL3, 130 AXP818_OUTPUT_CTRL3_ALDO1_EN << (aldo_num - 1)); 131 } 132 133 /* TODO: re-work other AXP drivers to consolidate ALDO functions. */ 134 int axp_set_aldo1(unsigned int mvolt) 135 { 136 return axp_set_aldo(1, mvolt); 137 } 138 139 int axp_set_aldo2(unsigned int mvolt) 140 { 141 return axp_set_aldo(2, mvolt); 142 } 143 144 int axp_set_aldo3(unsigned int mvolt) 145 { 146 return axp_set_aldo(3, mvolt); 147 } 148 149 int axp_set_dldo(int dldo_num, unsigned int mvolt) 150 { 151 int ret; 152 u8 cfg; 153 154 if (dldo_num < 1 || dldo_num > 4) 155 return -EINVAL; 156 157 if (mvolt == 0) 158 return pmic_bus_clrbits(AXP818_OUTPUT_CTRL2, 159 AXP818_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1)); 160 161 cfg = axp818_mvolt_to_cfg(mvolt, 700, 3300, 100); 162 if (dldo_num == 2 && mvolt > 3300) 163 cfg += 1 + axp818_mvolt_to_cfg(mvolt, 3400, 4200, 200); 164 ret = pmic_bus_write(AXP818_ELDO1_CTRL + (dldo_num - 1), cfg); 165 if (ret) 166 return ret; 167 168 return pmic_bus_setbits(AXP818_OUTPUT_CTRL2, 169 AXP818_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1)); 170 } 171 172 int axp_set_eldo(int eldo_num, unsigned int mvolt) 173 { 174 int ret; 175 u8 cfg; 176 177 if (eldo_num < 1 || eldo_num > 3) 178 return -EINVAL; 179 180 if (mvolt == 0) 181 return pmic_bus_clrbits(AXP818_OUTPUT_CTRL2, 182 AXP818_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1)); 183 184 cfg = axp818_mvolt_to_cfg(mvolt, 700, 1900, 50); 185 ret = pmic_bus_write(AXP818_ELDO1_CTRL + (eldo_num - 1), cfg); 186 if (ret) 187 return ret; 188 189 return pmic_bus_setbits(AXP818_OUTPUT_CTRL2, 190 AXP818_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1)); 191 } 192 193 int axp_set_fldo(int fldo_num, unsigned int mvolt) 194 { 195 int ret; 196 u8 cfg; 197 198 if (fldo_num < 1 || fldo_num > 3) 199 return -EINVAL; 200 201 if (mvolt == 0) 202 return pmic_bus_clrbits(AXP818_OUTPUT_CTRL3, 203 AXP818_OUTPUT_CTRL3_FLDO1_EN << (fldo_num - 1)); 204 205 if (fldo_num < 3) { 206 cfg = axp818_mvolt_to_cfg(mvolt, 700, 1450, 50); 207 ret = pmic_bus_write(AXP818_FLDO1_CTRL + (fldo_num - 1), cfg); 208 } else { 209 /* 210 * Special case for FLDO3, which is DCDC5 / 2 or FLDOIN / 2 211 * Since FLDOIN is unknown, test against DCDC5. 212 */ 213 if (mvolt * 2 == CONFIG_AXP_DCDC5_VOLT) 214 ret = pmic_bus_clrbits(AXP818_FLDO2_3_CTRL, 215 AXP818_FLDO2_3_CTRL_FLDO3_VOL); 216 else 217 ret = pmic_bus_setbits(AXP818_FLDO2_3_CTRL, 218 AXP818_FLDO2_3_CTRL_FLDO3_VOL); 219 } 220 if (ret) 221 return ret; 222 223 return pmic_bus_setbits(AXP818_OUTPUT_CTRL3, 224 AXP818_OUTPUT_CTRL3_FLDO1_EN << (fldo_num - 1)); 225 } 226 227 int axp_set_sw(bool on) 228 { 229 if (on) 230 return pmic_bus_setbits(AXP818_OUTPUT_CTRL2, 231 AXP818_OUTPUT_CTRL2_SW_EN); 232 233 return pmic_bus_clrbits(AXP818_OUTPUT_CTRL2, 234 AXP818_OUTPUT_CTRL2_SW_EN); 235 } 236 237 int axp_init(void) 238 { 239 u8 axp_chip_id; 240 int ret; 241 242 ret = pmic_bus_init(); 243 if (ret) 244 return ret; 245 246 ret = pmic_bus_read(AXP818_CHIP_ID, &axp_chip_id); 247 if (ret) 248 return ret; 249 250 if (!(axp_chip_id == 0x51)) 251 return -ENODEV; 252 else 253 return ret; 254 255 return 0; 256 } 257 258 int do_poweroff(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 259 { 260 pmic_bus_write(AXP818_SHUTDOWN, AXP818_SHUTDOWN_POWEROFF); 261 262 /* infinite loop during shutdown */ 263 while (1) {} 264 265 /* not reached */ 266 return 0; 267 } 268