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 <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_dldo1(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_CTRL2, 125 AXP221_OUTPUT_CTRL2_DLDO1_EN); 126 127 ret = pmic_bus_write(AXP221_DLDO1_CTRL, cfg); 128 if (ret) 129 return ret; 130 131 return pmic_bus_setbits(AXP221_OUTPUT_CTRL2, 132 AXP221_OUTPUT_CTRL2_DLDO1_EN); 133 } 134 135 int axp_set_dldo2(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_CTRL2, 142 AXP221_OUTPUT_CTRL2_DLDO2_EN); 143 144 ret = pmic_bus_write(AXP221_DLDO2_CTRL, cfg); 145 if (ret) 146 return ret; 147 148 return pmic_bus_setbits(AXP221_OUTPUT_CTRL2, 149 AXP221_OUTPUT_CTRL2_DLDO2_EN); 150 } 151 152 int axp_set_dldo3(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_CTRL2, 159 AXP221_OUTPUT_CTRL2_DLDO3_EN); 160 161 ret = pmic_bus_write(AXP221_DLDO3_CTRL, cfg); 162 if (ret) 163 return ret; 164 165 return pmic_bus_setbits(AXP221_OUTPUT_CTRL2, 166 AXP221_OUTPUT_CTRL2_DLDO3_EN); 167 } 168 169 int axp_set_dldo4(unsigned int mvolt) 170 { 171 int ret; 172 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); 173 174 if (mvolt == 0) 175 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL2, 176 AXP221_OUTPUT_CTRL2_DLDO4_EN); 177 178 ret = pmic_bus_write(AXP221_DLDO4_CTRL, cfg); 179 if (ret) 180 return ret; 181 182 return pmic_bus_setbits(AXP221_OUTPUT_CTRL2, 183 AXP221_OUTPUT_CTRL2_DLDO4_EN); 184 } 185 186 int axp_set_aldo1(unsigned int mvolt) 187 { 188 int ret; 189 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); 190 191 if (mvolt == 0) 192 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1, 193 AXP221_OUTPUT_CTRL1_ALDO1_EN); 194 195 ret = pmic_bus_write(AXP221_ALDO1_CTRL, cfg); 196 if (ret) 197 return ret; 198 199 return pmic_bus_setbits(AXP221_OUTPUT_CTRL1, 200 AXP221_OUTPUT_CTRL1_ALDO1_EN); 201 } 202 203 int axp_set_aldo2(unsigned int mvolt) 204 { 205 int ret; 206 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); 207 208 if (mvolt == 0) 209 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1, 210 AXP221_OUTPUT_CTRL1_ALDO2_EN); 211 212 ret = pmic_bus_write(AXP221_ALDO2_CTRL, cfg); 213 if (ret) 214 return ret; 215 216 return pmic_bus_setbits(AXP221_OUTPUT_CTRL1, 217 AXP221_OUTPUT_CTRL1_ALDO2_EN); 218 } 219 220 int axp_set_aldo3(unsigned int mvolt) 221 { 222 int ret; 223 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); 224 225 if (mvolt == 0) 226 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL3, 227 AXP221_OUTPUT_CTRL3_ALDO3_EN); 228 229 ret = pmic_bus_write(AXP221_ALDO3_CTRL, cfg); 230 if (ret) 231 return ret; 232 233 return pmic_bus_setbits(AXP221_OUTPUT_CTRL3, 234 AXP221_OUTPUT_CTRL3_ALDO3_EN); 235 } 236 237 int axp_set_eldo(int eldo_num, unsigned int mvolt) 238 { 239 int ret; 240 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); 241 u8 addr, bits; 242 243 switch (eldo_num) { 244 case 3: 245 addr = AXP221_ELDO3_CTRL; 246 bits = AXP221_OUTPUT_CTRL2_ELDO3_EN; 247 break; 248 case 2: 249 addr = AXP221_ELDO2_CTRL; 250 bits = AXP221_OUTPUT_CTRL2_ELDO2_EN; 251 break; 252 case 1: 253 addr = AXP221_ELDO1_CTRL; 254 bits = AXP221_OUTPUT_CTRL2_ELDO1_EN; 255 break; 256 default: 257 return -EINVAL; 258 } 259 260 if (mvolt == 0) 261 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL2, bits); 262 263 ret = pmic_bus_write(addr, cfg); 264 if (ret) 265 return ret; 266 267 return pmic_bus_setbits(AXP221_OUTPUT_CTRL2, bits); 268 } 269 270 int axp_init(void) 271 { 272 u8 axp_chip_id; 273 int ret; 274 275 ret = pmic_bus_init(); 276 if (ret) 277 return ret; 278 279 ret = pmic_bus_read(AXP221_CHIP_ID, &axp_chip_id); 280 if (ret) 281 return ret; 282 283 if (!(axp_chip_id == 0x6 || axp_chip_id == 0x7 || axp_chip_id == 0x17)) 284 return -ENODEV; 285 286 return 0; 287 } 288 289 int axp_get_sid(unsigned int *sid) 290 { 291 u8 *dest = (u8 *)sid; 292 int i, ret; 293 294 ret = pmic_bus_init(); 295 if (ret) 296 return ret; 297 298 ret = pmic_bus_write(AXP221_PAGE, 1); 299 if (ret) 300 return ret; 301 302 for (i = 0; i < 16; i++) { 303 ret = pmic_bus_read(AXP221_SID + i, &dest[i]); 304 if (ret) 305 return ret; 306 } 307 308 pmic_bus_write(AXP221_PAGE, 0); 309 310 for (i = 0; i < 4; i++) 311 sid[i] = be32_to_cpu(sid[i]); 312 313 return 0; 314 } 315