1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * AXP221 and AXP223 driver 4 * 5 * IMPORTANT when making changes to this file check that the registers 6 * used are the same for the axp221 and axp223. 7 * 8 * (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com> 9 * (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl> 10 */ 11 12 #include <common.h> 13 #include <command.h> 14 #include <errno.h> 15 #include <asm/arch/pmic_bus.h> 16 #include <axp_pmic.h> 17 18 static u8 axp221_mvolt_to_cfg(int mvolt, int min, int max, int div) 19 { 20 if (mvolt < min) 21 mvolt = min; 22 else if (mvolt > max) 23 mvolt = max; 24 25 return (mvolt - min) / div; 26 } 27 28 int axp_set_dcdc1(unsigned int mvolt) 29 { 30 int ret; 31 u8 cfg = axp221_mvolt_to_cfg(mvolt, 1600, 3400, 100); 32 33 if (mvolt == 0) 34 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1, 35 AXP221_OUTPUT_CTRL1_DCDC1_EN); 36 37 ret = pmic_bus_write(AXP221_DCDC1_CTRL, cfg); 38 if (ret) 39 return ret; 40 41 ret = pmic_bus_setbits(AXP221_OUTPUT_CTRL2, 42 AXP221_OUTPUT_CTRL2_DCDC1SW_EN); 43 if (ret) 44 return ret; 45 46 return pmic_bus_setbits(AXP221_OUTPUT_CTRL1, 47 AXP221_OUTPUT_CTRL1_DCDC1_EN); 48 } 49 50 int axp_set_dcdc2(unsigned int mvolt) 51 { 52 int ret; 53 u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20); 54 55 if (mvolt == 0) 56 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1, 57 AXP221_OUTPUT_CTRL1_DCDC2_EN); 58 59 ret = pmic_bus_write(AXP221_DCDC2_CTRL, cfg); 60 if (ret) 61 return ret; 62 63 return pmic_bus_setbits(AXP221_OUTPUT_CTRL1, 64 AXP221_OUTPUT_CTRL1_DCDC2_EN); 65 } 66 67 int axp_set_dcdc3(unsigned int mvolt) 68 { 69 int ret; 70 u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1860, 20); 71 72 if (mvolt == 0) 73 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1, 74 AXP221_OUTPUT_CTRL1_DCDC3_EN); 75 76 ret = pmic_bus_write(AXP221_DCDC3_CTRL, cfg); 77 if (ret) 78 return ret; 79 80 return pmic_bus_setbits(AXP221_OUTPUT_CTRL1, 81 AXP221_OUTPUT_CTRL1_DCDC3_EN); 82 } 83 84 int axp_set_dcdc4(unsigned int mvolt) 85 { 86 int ret; 87 u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20); 88 89 if (mvolt == 0) 90 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1, 91 AXP221_OUTPUT_CTRL1_DCDC4_EN); 92 93 ret = pmic_bus_write(AXP221_DCDC4_CTRL, cfg); 94 if (ret) 95 return ret; 96 97 return pmic_bus_setbits(AXP221_OUTPUT_CTRL1, 98 AXP221_OUTPUT_CTRL1_DCDC4_EN); 99 } 100 101 int axp_set_dcdc5(unsigned int mvolt) 102 { 103 int ret; 104 u8 cfg = axp221_mvolt_to_cfg(mvolt, 1000, 2550, 50); 105 106 if (mvolt == 0) 107 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1, 108 AXP221_OUTPUT_CTRL1_DCDC5_EN); 109 110 ret = pmic_bus_write(AXP221_DCDC5_CTRL, cfg); 111 if (ret) 112 return ret; 113 114 return pmic_bus_setbits(AXP221_OUTPUT_CTRL1, 115 AXP221_OUTPUT_CTRL1_DCDC5_EN); 116 } 117 118 int axp_set_aldo1(unsigned int mvolt) 119 { 120 int ret; 121 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); 122 123 if (mvolt == 0) 124 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1, 125 AXP221_OUTPUT_CTRL1_ALDO1_EN); 126 127 ret = pmic_bus_write(AXP221_ALDO1_CTRL, cfg); 128 if (ret) 129 return ret; 130 131 return pmic_bus_setbits(AXP221_OUTPUT_CTRL1, 132 AXP221_OUTPUT_CTRL1_ALDO1_EN); 133 } 134 135 int axp_set_aldo2(unsigned int mvolt) 136 { 137 int ret; 138 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); 139 140 if (mvolt == 0) 141 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1, 142 AXP221_OUTPUT_CTRL1_ALDO2_EN); 143 144 ret = pmic_bus_write(AXP221_ALDO2_CTRL, cfg); 145 if (ret) 146 return ret; 147 148 return pmic_bus_setbits(AXP221_OUTPUT_CTRL1, 149 AXP221_OUTPUT_CTRL1_ALDO2_EN); 150 } 151 152 int axp_set_aldo3(unsigned int mvolt) 153 { 154 int ret; 155 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); 156 157 if (mvolt == 0) 158 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL3, 159 AXP221_OUTPUT_CTRL3_ALDO3_EN); 160 161 ret = pmic_bus_write(AXP221_ALDO3_CTRL, cfg); 162 if (ret) 163 return ret; 164 165 return pmic_bus_setbits(AXP221_OUTPUT_CTRL3, 166 AXP221_OUTPUT_CTRL3_ALDO3_EN); 167 } 168 169 int axp_set_dldo(int dldo_num, unsigned int mvolt) 170 { 171 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); 172 int ret; 173 174 if (dldo_num < 1 || dldo_num > 4) 175 return -EINVAL; 176 177 if (mvolt == 0) 178 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL2, 179 AXP221_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1)); 180 181 ret = pmic_bus_write(AXP221_DLDO1_CTRL + (dldo_num - 1), cfg); 182 if (ret) 183 return ret; 184 185 return pmic_bus_setbits(AXP221_OUTPUT_CTRL2, 186 AXP221_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1)); 187 } 188 189 int axp_set_eldo(int eldo_num, unsigned int mvolt) 190 { 191 int ret; 192 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); 193 194 if (eldo_num < 1 || eldo_num > 3) 195 return -EINVAL; 196 197 if (mvolt == 0) 198 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL2, 199 AXP221_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1)); 200 201 ret = pmic_bus_write(AXP221_ELDO1_CTRL + (eldo_num - 1), cfg); 202 if (ret) 203 return ret; 204 205 return pmic_bus_setbits(AXP221_OUTPUT_CTRL2, 206 AXP221_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1)); 207 } 208 209 int axp_init(void) 210 { 211 u8 axp_chip_id; 212 int ret; 213 214 ret = pmic_bus_init(); 215 if (ret) 216 return ret; 217 218 ret = pmic_bus_read(AXP221_CHIP_ID, &axp_chip_id); 219 if (ret) 220 return ret; 221 222 if (!(axp_chip_id == 0x6 || axp_chip_id == 0x7 || axp_chip_id == 0x17)) 223 return -ENODEV; 224 225 /* 226 * Turn off LDOIO regulators / tri-state GPIO pins, when rebooting 227 * from android these are sometimes on. 228 */ 229 ret = pmic_bus_write(AXP_GPIO0_CTRL, AXP_GPIO_CTRL_INPUT); 230 if (ret) 231 return ret; 232 233 ret = pmic_bus_write(AXP_GPIO1_CTRL, AXP_GPIO_CTRL_INPUT); 234 if (ret) 235 return ret; 236 237 return 0; 238 } 239 240 int axp_get_sid(unsigned int *sid) 241 { 242 u8 *dest = (u8 *)sid; 243 int i, ret; 244 245 ret = pmic_bus_init(); 246 if (ret) 247 return ret; 248 249 ret = pmic_bus_write(AXP221_PAGE, 1); 250 if (ret) 251 return ret; 252 253 for (i = 0; i < 16; i++) { 254 ret = pmic_bus_read(AXP221_SID + i, &dest[i]); 255 if (ret) 256 return ret; 257 } 258 259 pmic_bus_write(AXP221_PAGE, 0); 260 261 for (i = 0; i < 4; i++) 262 sid[i] = be32_to_cpu(sid[i]); 263 264 return 0; 265 } 266 267 int do_poweroff(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 268 { 269 pmic_bus_write(AXP221_SHUTDOWN, AXP221_SHUTDOWN_POWEROFF); 270 271 /* infinite loop during shutdown */ 272 while (1) {} 273 274 /* not reached */ 275 return 0; 276 } 277