1 /* 2 * AXP221 and AXP223 driver 3 * 4 * IMPORTANT when making changes to this file check that the registers 5 * used are the same for the axp221 and axp223. 6 * 7 * (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com> 8 * (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl> 9 * 10 * SPDX-License-Identifier: GPL-2.0+ 11 */ 12 13 #include <common.h> 14 #include <command.h> 15 #include <errno.h> 16 #include <asm/arch/pmic_bus.h> 17 #include <axp_pmic.h> 18 19 static u8 axp221_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 = axp221_mvolt_to_cfg(mvolt, 1600, 3400, 100); 33 34 if (mvolt == 0) 35 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1, 36 AXP221_OUTPUT_CTRL1_DCDC1_EN); 37 38 ret = pmic_bus_write(AXP221_DCDC1_CTRL, cfg); 39 if (ret) 40 return ret; 41 42 ret = pmic_bus_setbits(AXP221_OUTPUT_CTRL2, 43 AXP221_OUTPUT_CTRL2_DCDC1SW_EN); 44 if (ret) 45 return ret; 46 47 return pmic_bus_setbits(AXP221_OUTPUT_CTRL1, 48 AXP221_OUTPUT_CTRL1_DCDC1_EN); 49 } 50 51 int axp_set_dcdc2(unsigned int mvolt) 52 { 53 int ret; 54 u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20); 55 56 if (mvolt == 0) 57 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1, 58 AXP221_OUTPUT_CTRL1_DCDC2_EN); 59 60 ret = pmic_bus_write(AXP221_DCDC2_CTRL, cfg); 61 if (ret) 62 return ret; 63 64 return pmic_bus_setbits(AXP221_OUTPUT_CTRL1, 65 AXP221_OUTPUT_CTRL1_DCDC2_EN); 66 } 67 68 int axp_set_dcdc3(unsigned int mvolt) 69 { 70 int ret; 71 u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1860, 20); 72 73 if (mvolt == 0) 74 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1, 75 AXP221_OUTPUT_CTRL1_DCDC3_EN); 76 77 ret = pmic_bus_write(AXP221_DCDC3_CTRL, cfg); 78 if (ret) 79 return ret; 80 81 return pmic_bus_setbits(AXP221_OUTPUT_CTRL1, 82 AXP221_OUTPUT_CTRL1_DCDC3_EN); 83 } 84 85 int axp_set_dcdc4(unsigned int mvolt) 86 { 87 int ret; 88 u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20); 89 90 if (mvolt == 0) 91 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1, 92 AXP221_OUTPUT_CTRL1_DCDC4_EN); 93 94 ret = pmic_bus_write(AXP221_DCDC4_CTRL, cfg); 95 if (ret) 96 return ret; 97 98 return pmic_bus_setbits(AXP221_OUTPUT_CTRL1, 99 AXP221_OUTPUT_CTRL1_DCDC4_EN); 100 } 101 102 int axp_set_dcdc5(unsigned int mvolt) 103 { 104 int ret; 105 u8 cfg = axp221_mvolt_to_cfg(mvolt, 1000, 2550, 50); 106 107 if (mvolt == 0) 108 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1, 109 AXP221_OUTPUT_CTRL1_DCDC5_EN); 110 111 ret = pmic_bus_write(AXP221_DCDC5_CTRL, cfg); 112 if (ret) 113 return ret; 114 115 return pmic_bus_setbits(AXP221_OUTPUT_CTRL1, 116 AXP221_OUTPUT_CTRL1_DCDC5_EN); 117 } 118 119 int axp_set_aldo1(unsigned int mvolt) 120 { 121 int ret; 122 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); 123 124 if (mvolt == 0) 125 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1, 126 AXP221_OUTPUT_CTRL1_ALDO1_EN); 127 128 ret = pmic_bus_write(AXP221_ALDO1_CTRL, cfg); 129 if (ret) 130 return ret; 131 132 return pmic_bus_setbits(AXP221_OUTPUT_CTRL1, 133 AXP221_OUTPUT_CTRL1_ALDO1_EN); 134 } 135 136 int axp_set_aldo2(unsigned int mvolt) 137 { 138 int ret; 139 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); 140 141 if (mvolt == 0) 142 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1, 143 AXP221_OUTPUT_CTRL1_ALDO2_EN); 144 145 ret = pmic_bus_write(AXP221_ALDO2_CTRL, cfg); 146 if (ret) 147 return ret; 148 149 return pmic_bus_setbits(AXP221_OUTPUT_CTRL1, 150 AXP221_OUTPUT_CTRL1_ALDO2_EN); 151 } 152 153 int axp_set_aldo3(unsigned int mvolt) 154 { 155 int ret; 156 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); 157 158 if (mvolt == 0) 159 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL3, 160 AXP221_OUTPUT_CTRL3_ALDO3_EN); 161 162 ret = pmic_bus_write(AXP221_ALDO3_CTRL, cfg); 163 if (ret) 164 return ret; 165 166 return pmic_bus_setbits(AXP221_OUTPUT_CTRL3, 167 AXP221_OUTPUT_CTRL3_ALDO3_EN); 168 } 169 170 int axp_set_dldo(int dldo_num, unsigned int mvolt) 171 { 172 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); 173 int ret; 174 175 if (dldo_num < 1 || dldo_num > 4) 176 return -EINVAL; 177 178 if (mvolt == 0) 179 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL2, 180 AXP221_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1)); 181 182 ret = pmic_bus_write(AXP221_DLDO1_CTRL + (dldo_num - 1), cfg); 183 if (ret) 184 return ret; 185 186 return pmic_bus_setbits(AXP221_OUTPUT_CTRL2, 187 AXP221_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1)); 188 } 189 190 int axp_set_eldo(int eldo_num, unsigned int mvolt) 191 { 192 int ret; 193 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); 194 u8 addr, bits; 195 196 switch (eldo_num) { 197 case 3: 198 addr = AXP221_ELDO3_CTRL; 199 bits = AXP221_OUTPUT_CTRL2_ELDO3_EN; 200 break; 201 case 2: 202 addr = AXP221_ELDO2_CTRL; 203 bits = AXP221_OUTPUT_CTRL2_ELDO2_EN; 204 break; 205 case 1: 206 addr = AXP221_ELDO1_CTRL; 207 bits = AXP221_OUTPUT_CTRL2_ELDO1_EN; 208 break; 209 default: 210 return -EINVAL; 211 } 212 213 if (mvolt == 0) 214 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL2, bits); 215 216 ret = pmic_bus_write(addr, cfg); 217 if (ret) 218 return ret; 219 220 return pmic_bus_setbits(AXP221_OUTPUT_CTRL2, bits); 221 } 222 223 int axp_init(void) 224 { 225 u8 axp_chip_id; 226 int ret; 227 228 ret = pmic_bus_init(); 229 if (ret) 230 return ret; 231 232 ret = pmic_bus_read(AXP221_CHIP_ID, &axp_chip_id); 233 if (ret) 234 return ret; 235 236 if (!(axp_chip_id == 0x6 || axp_chip_id == 0x7 || axp_chip_id == 0x17)) 237 return -ENODEV; 238 239 return 0; 240 } 241 242 int axp_get_sid(unsigned int *sid) 243 { 244 u8 *dest = (u8 *)sid; 245 int i, ret; 246 247 ret = pmic_bus_init(); 248 if (ret) 249 return ret; 250 251 ret = pmic_bus_write(AXP221_PAGE, 1); 252 if (ret) 253 return ret; 254 255 for (i = 0; i < 16; i++) { 256 ret = pmic_bus_read(AXP221_SID + i, &dest[i]); 257 if (ret) 258 return ret; 259 } 260 261 pmic_bus_write(AXP221_PAGE, 0); 262 263 for (i = 0; i < 4; i++) 264 sid[i] = be32_to_cpu(sid[i]); 265 266 return 0; 267 } 268 269 int do_poweroff(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 270 { 271 pmic_bus_write(AXP221_SHUTDOWN, AXP221_SHUTDOWN_POWEROFF); 272 273 /* infinite loop during shutdown */ 274 while (1) {} 275 276 /* not reached */ 277 return 0; 278 } 279