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/gpio.h> 16 #include <asm/arch/pmic_bus.h> 17 #include <axp221.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 axp221_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 axp221_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 axp221_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 axp221_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 axp221_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 axp221_set_dldo1(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_CTRL2, 126 AXP221_OUTPUT_CTRL2_DLDO1_EN); 127 128 ret = pmic_bus_write(AXP221_DLDO1_CTRL, cfg); 129 if (ret) 130 return ret; 131 132 return pmic_bus_setbits(AXP221_OUTPUT_CTRL2, 133 AXP221_OUTPUT_CTRL2_DLDO1_EN); 134 } 135 136 int axp221_set_dldo2(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_CTRL2, 143 AXP221_OUTPUT_CTRL2_DLDO2_EN); 144 145 ret = pmic_bus_write(AXP221_DLDO2_CTRL, cfg); 146 if (ret) 147 return ret; 148 149 return pmic_bus_setbits(AXP221_OUTPUT_CTRL2, 150 AXP221_OUTPUT_CTRL2_DLDO2_EN); 151 } 152 153 int axp221_set_dldo3(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_CTRL2, 160 AXP221_OUTPUT_CTRL2_DLDO3_EN); 161 162 ret = pmic_bus_write(AXP221_DLDO3_CTRL, cfg); 163 if (ret) 164 return ret; 165 166 return pmic_bus_setbits(AXP221_OUTPUT_CTRL2, 167 AXP221_OUTPUT_CTRL2_DLDO3_EN); 168 } 169 170 int axp221_set_dldo4(unsigned int mvolt) 171 { 172 int ret; 173 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); 174 175 if (mvolt == 0) 176 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL2, 177 AXP221_OUTPUT_CTRL2_DLDO4_EN); 178 179 ret = pmic_bus_write(AXP221_DLDO4_CTRL, cfg); 180 if (ret) 181 return ret; 182 183 return pmic_bus_setbits(AXP221_OUTPUT_CTRL2, 184 AXP221_OUTPUT_CTRL2_DLDO4_EN); 185 } 186 187 int axp221_set_aldo1(unsigned int mvolt) 188 { 189 int ret; 190 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); 191 192 if (mvolt == 0) 193 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1, 194 AXP221_OUTPUT_CTRL1_ALDO1_EN); 195 196 ret = pmic_bus_write(AXP221_ALDO1_CTRL, cfg); 197 if (ret) 198 return ret; 199 200 return pmic_bus_setbits(AXP221_OUTPUT_CTRL1, 201 AXP221_OUTPUT_CTRL1_ALDO1_EN); 202 } 203 204 int axp221_set_aldo2(unsigned int mvolt) 205 { 206 int ret; 207 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); 208 209 if (mvolt == 0) 210 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1, 211 AXP221_OUTPUT_CTRL1_ALDO2_EN); 212 213 ret = pmic_bus_write(AXP221_ALDO2_CTRL, cfg); 214 if (ret) 215 return ret; 216 217 return pmic_bus_setbits(AXP221_OUTPUT_CTRL1, 218 AXP221_OUTPUT_CTRL1_ALDO2_EN); 219 } 220 221 int axp221_set_aldo3(unsigned int mvolt) 222 { 223 int ret; 224 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); 225 226 if (mvolt == 0) 227 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL3, 228 AXP221_OUTPUT_CTRL3_ALDO3_EN); 229 230 ret = pmic_bus_write(AXP221_ALDO3_CTRL, cfg); 231 if (ret) 232 return ret; 233 234 return pmic_bus_setbits(AXP221_OUTPUT_CTRL3, 235 AXP221_OUTPUT_CTRL3_ALDO3_EN); 236 } 237 238 int axp221_set_eldo(int eldo_num, unsigned int mvolt) 239 { 240 int ret; 241 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); 242 u8 addr, bits; 243 244 switch (eldo_num) { 245 case 3: 246 addr = AXP221_ELDO3_CTRL; 247 bits = AXP221_OUTPUT_CTRL2_ELDO3_EN; 248 break; 249 case 2: 250 addr = AXP221_ELDO2_CTRL; 251 bits = AXP221_OUTPUT_CTRL2_ELDO2_EN; 252 break; 253 case 1: 254 addr = AXP221_ELDO1_CTRL; 255 bits = AXP221_OUTPUT_CTRL2_ELDO1_EN; 256 break; 257 default: 258 return -EINVAL; 259 } 260 261 if (mvolt == 0) 262 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL2, bits); 263 264 ret = pmic_bus_write(addr, cfg); 265 if (ret) 266 return ret; 267 268 return pmic_bus_setbits(AXP221_OUTPUT_CTRL2, bits); 269 } 270 271 int axp221_init(void) 272 { 273 /* This cannot be 0 because it is used in SPL before BSS is ready */ 274 static int needs_init = 1; 275 u8 axp_chip_id; 276 int ret; 277 278 if (!needs_init) 279 return 0; 280 281 ret = pmic_bus_init(); 282 if (ret) 283 return ret; 284 285 ret = pmic_bus_read(AXP221_CHIP_ID, &axp_chip_id); 286 if (ret) 287 return ret; 288 289 if (!(axp_chip_id == 0x6 || axp_chip_id == 0x7 || axp_chip_id == 0x17)) 290 return -ENODEV; 291 292 needs_init = 0; 293 return 0; 294 } 295 296 int axp221_get_sid(unsigned int *sid) 297 { 298 u8 *dest = (u8 *)sid; 299 int i, ret; 300 301 ret = axp221_init(); 302 if (ret) 303 return ret; 304 305 ret = pmic_bus_write(AXP221_PAGE, 1); 306 if (ret) 307 return ret; 308 309 for (i = 0; i < 16; i++) { 310 ret = pmic_bus_read(AXP221_SID + i, &dest[i]); 311 if (ret) 312 return ret; 313 } 314 315 pmic_bus_write(AXP221_PAGE, 0); 316 317 for (i = 0; i < 4; i++) 318 sid[i] = be32_to_cpu(sid[i]); 319 320 return 0; 321 } 322