1 /* 2 * AXP20x regulators driver. 3 * 4 * Copyright (C) 2013 Carlo Caione <carlo@caione.org> 5 * 6 * This file is subject to the terms and conditions of the GNU General 7 * Public License. See the file "COPYING" in the main directory of this 8 * archive for more details. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 */ 15 16 #include <linux/err.h> 17 #include <linux/init.h> 18 #include <linux/module.h> 19 #include <linux/of.h> 20 #include <linux/of_device.h> 21 #include <linux/platform_device.h> 22 #include <linux/regmap.h> 23 #include <linux/mfd/axp20x.h> 24 #include <linux/regulator/driver.h> 25 #include <linux/regulator/of_regulator.h> 26 27 #define AXP20X_IO_ENABLED 0x03 28 #define AXP20X_IO_DISABLED 0x07 29 30 #define AXP22X_IO_ENABLED 0x03 31 #define AXP22X_IO_DISABLED 0x04 32 33 #define AXP20X_WORKMODE_DCDC2_MASK BIT(2) 34 #define AXP20X_WORKMODE_DCDC3_MASK BIT(1) 35 #define AXP22X_WORKMODE_DCDCX_MASK(x) BIT(x) 36 37 #define AXP20X_FREQ_DCDC_MASK 0x0f 38 39 #define AXP22X_MISC_N_VBUSEN_FUNC BIT(4) 40 41 #define AXP_DESC_IO(_family, _id, _match, _supply, _min, _max, _step, _vreg, \ 42 _vmask, _ereg, _emask, _enable_val, _disable_val) \ 43 [_family##_##_id] = { \ 44 .name = (_match), \ 45 .supply_name = (_supply), \ 46 .of_match = of_match_ptr(_match), \ 47 .regulators_node = of_match_ptr("regulators"), \ 48 .type = REGULATOR_VOLTAGE, \ 49 .id = _family##_##_id, \ 50 .n_voltages = (((_max) - (_min)) / (_step) + 1), \ 51 .owner = THIS_MODULE, \ 52 .min_uV = (_min) * 1000, \ 53 .uV_step = (_step) * 1000, \ 54 .vsel_reg = (_vreg), \ 55 .vsel_mask = (_vmask), \ 56 .enable_reg = (_ereg), \ 57 .enable_mask = (_emask), \ 58 .enable_val = (_enable_val), \ 59 .disable_val = (_disable_val), \ 60 .ops = &axp20x_ops, \ 61 } 62 63 #define AXP_DESC(_family, _id, _match, _supply, _min, _max, _step, _vreg, \ 64 _vmask, _ereg, _emask) \ 65 [_family##_##_id] = { \ 66 .name = (_match), \ 67 .supply_name = (_supply), \ 68 .of_match = of_match_ptr(_match), \ 69 .regulators_node = of_match_ptr("regulators"), \ 70 .type = REGULATOR_VOLTAGE, \ 71 .id = _family##_##_id, \ 72 .n_voltages = (((_max) - (_min)) / (_step) + 1), \ 73 .owner = THIS_MODULE, \ 74 .min_uV = (_min) * 1000, \ 75 .uV_step = (_step) * 1000, \ 76 .vsel_reg = (_vreg), \ 77 .vsel_mask = (_vmask), \ 78 .enable_reg = (_ereg), \ 79 .enable_mask = (_emask), \ 80 .ops = &axp20x_ops, \ 81 } 82 83 #define AXP_DESC_SW(_family, _id, _match, _supply, _ereg, _emask) \ 84 [_family##_##_id] = { \ 85 .name = (_match), \ 86 .supply_name = (_supply), \ 87 .of_match = of_match_ptr(_match), \ 88 .regulators_node = of_match_ptr("regulators"), \ 89 .type = REGULATOR_VOLTAGE, \ 90 .id = _family##_##_id, \ 91 .owner = THIS_MODULE, \ 92 .enable_reg = (_ereg), \ 93 .enable_mask = (_emask), \ 94 .ops = &axp20x_ops_sw, \ 95 } 96 97 #define AXP_DESC_FIXED(_family, _id, _match, _supply, _volt) \ 98 [_family##_##_id] = { \ 99 .name = (_match), \ 100 .supply_name = (_supply), \ 101 .of_match = of_match_ptr(_match), \ 102 .regulators_node = of_match_ptr("regulators"), \ 103 .type = REGULATOR_VOLTAGE, \ 104 .id = _family##_##_id, \ 105 .n_voltages = 1, \ 106 .owner = THIS_MODULE, \ 107 .min_uV = (_volt) * 1000, \ 108 .ops = &axp20x_ops_fixed \ 109 } 110 111 #define AXP_DESC_RANGES(_family, _id, _match, _supply, _ranges, _n_voltages, \ 112 _vreg, _vmask, _ereg, _emask) \ 113 [_family##_##_id] = { \ 114 .name = (_match), \ 115 .supply_name = (_supply), \ 116 .of_match = of_match_ptr(_match), \ 117 .regulators_node = of_match_ptr("regulators"), \ 118 .type = REGULATOR_VOLTAGE, \ 119 .id = _family##_##_id, \ 120 .n_voltages = (_n_voltages), \ 121 .owner = THIS_MODULE, \ 122 .vsel_reg = (_vreg), \ 123 .vsel_mask = (_vmask), \ 124 .enable_reg = (_ereg), \ 125 .enable_mask = (_emask), \ 126 .linear_ranges = (_ranges), \ 127 .n_linear_ranges = ARRAY_SIZE(_ranges), \ 128 .ops = &axp20x_ops_range, \ 129 } 130 131 static const struct regulator_ops axp20x_ops_fixed = { 132 .list_voltage = regulator_list_voltage_linear, 133 }; 134 135 static const struct regulator_ops axp20x_ops_range = { 136 .set_voltage_sel = regulator_set_voltage_sel_regmap, 137 .get_voltage_sel = regulator_get_voltage_sel_regmap, 138 .list_voltage = regulator_list_voltage_linear_range, 139 .enable = regulator_enable_regmap, 140 .disable = regulator_disable_regmap, 141 .is_enabled = regulator_is_enabled_regmap, 142 }; 143 144 static const struct regulator_ops axp20x_ops = { 145 .set_voltage_sel = regulator_set_voltage_sel_regmap, 146 .get_voltage_sel = regulator_get_voltage_sel_regmap, 147 .list_voltage = regulator_list_voltage_linear, 148 .enable = regulator_enable_regmap, 149 .disable = regulator_disable_regmap, 150 .is_enabled = regulator_is_enabled_regmap, 151 }; 152 153 static const struct regulator_ops axp20x_ops_sw = { 154 .enable = regulator_enable_regmap, 155 .disable = regulator_disable_regmap, 156 .is_enabled = regulator_is_enabled_regmap, 157 }; 158 159 static const struct regulator_linear_range axp20x_ldo4_ranges[] = { 160 REGULATOR_LINEAR_RANGE(1250000, 0x0, 0x0, 0), 161 REGULATOR_LINEAR_RANGE(1300000, 0x1, 0x8, 100000), 162 REGULATOR_LINEAR_RANGE(2500000, 0x9, 0x9, 0), 163 REGULATOR_LINEAR_RANGE(2700000, 0xa, 0xb, 100000), 164 REGULATOR_LINEAR_RANGE(3000000, 0xc, 0xf, 100000), 165 }; 166 167 static const struct regulator_desc axp20x_regulators[] = { 168 AXP_DESC(AXP20X, DCDC2, "dcdc2", "vin2", 700, 2275, 25, 169 AXP20X_DCDC2_V_OUT, 0x3f, AXP20X_PWR_OUT_CTRL, 0x10), 170 AXP_DESC(AXP20X, DCDC3, "dcdc3", "vin3", 700, 3500, 25, 171 AXP20X_DCDC3_V_OUT, 0x7f, AXP20X_PWR_OUT_CTRL, 0x02), 172 AXP_DESC_FIXED(AXP20X, LDO1, "ldo1", "acin", 1300), 173 AXP_DESC(AXP20X, LDO2, "ldo2", "ldo24in", 1800, 3300, 100, 174 AXP20X_LDO24_V_OUT, 0xf0, AXP20X_PWR_OUT_CTRL, 0x04), 175 AXP_DESC(AXP20X, LDO3, "ldo3", "ldo3in", 700, 3500, 25, 176 AXP20X_LDO3_V_OUT, 0x7f, AXP20X_PWR_OUT_CTRL, 0x40), 177 AXP_DESC_RANGES(AXP20X, LDO4, "ldo4", "ldo24in", axp20x_ldo4_ranges, 178 16, AXP20X_LDO24_V_OUT, 0x0f, AXP20X_PWR_OUT_CTRL, 179 0x08), 180 AXP_DESC_IO(AXP20X, LDO5, "ldo5", "ldo5in", 1800, 3300, 100, 181 AXP20X_LDO5_V_OUT, 0xf0, AXP20X_GPIO0_CTRL, 0x07, 182 AXP20X_IO_ENABLED, AXP20X_IO_DISABLED), 183 }; 184 185 static const struct regulator_desc axp22x_regulators[] = { 186 AXP_DESC(AXP22X, DCDC1, "dcdc1", "vin1", 1600, 3400, 100, 187 AXP22X_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(1)), 188 AXP_DESC(AXP22X, DCDC2, "dcdc2", "vin2", 600, 1540, 20, 189 AXP22X_DCDC2_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(2)), 190 AXP_DESC(AXP22X, DCDC3, "dcdc3", "vin3", 600, 1860, 20, 191 AXP22X_DCDC3_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(3)), 192 AXP_DESC(AXP22X, DCDC4, "dcdc4", "vin4", 600, 1540, 20, 193 AXP22X_DCDC4_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(4)), 194 AXP_DESC(AXP22X, DCDC5, "dcdc5", "vin5", 1000, 2550, 50, 195 AXP22X_DCDC5_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(5)), 196 /* secondary switchable output of DCDC1 */ 197 AXP_DESC_SW(AXP22X, DC1SW, "dc1sw", NULL, AXP22X_PWR_OUT_CTRL2, 198 BIT(7)), 199 /* LDO regulator internally chained to DCDC5 */ 200 AXP_DESC(AXP22X, DC5LDO, "dc5ldo", NULL, 700, 1400, 100, 201 AXP22X_DC5LDO_V_OUT, 0x7, AXP22X_PWR_OUT_CTRL1, BIT(0)), 202 AXP_DESC(AXP22X, ALDO1, "aldo1", "aldoin", 700, 3300, 100, 203 AXP22X_ALDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(6)), 204 AXP_DESC(AXP22X, ALDO2, "aldo2", "aldoin", 700, 3300, 100, 205 AXP22X_ALDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(7)), 206 AXP_DESC(AXP22X, ALDO3, "aldo3", "aldoin", 700, 3300, 100, 207 AXP22X_ALDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(7)), 208 AXP_DESC(AXP22X, DLDO1, "dldo1", "dldoin", 700, 3300, 100, 209 AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(3)), 210 AXP_DESC(AXP22X, DLDO2, "dldo2", "dldoin", 700, 3300, 100, 211 AXP22X_DLDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(4)), 212 AXP_DESC(AXP22X, DLDO3, "dldo3", "dldoin", 700, 3300, 100, 213 AXP22X_DLDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(5)), 214 AXP_DESC(AXP22X, DLDO4, "dldo4", "dldoin", 700, 3300, 100, 215 AXP22X_DLDO4_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(6)), 216 AXP_DESC(AXP22X, ELDO1, "eldo1", "eldoin", 700, 3300, 100, 217 AXP22X_ELDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(0)), 218 AXP_DESC(AXP22X, ELDO2, "eldo2", "eldoin", 700, 3300, 100, 219 AXP22X_ELDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(1)), 220 AXP_DESC(AXP22X, ELDO3, "eldo3", "eldoin", 700, 3300, 100, 221 AXP22X_ELDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(2)), 222 /* Note the datasheet only guarantees reliable operation up to 223 * 3.3V, this needs to be enforced via dts provided constraints */ 224 AXP_DESC_IO(AXP22X, LDO_IO0, "ldo_io0", "ips", 700, 3800, 100, 225 AXP22X_LDO_IO0_V_OUT, 0x1f, AXP20X_GPIO0_CTRL, 0x07, 226 AXP22X_IO_ENABLED, AXP22X_IO_DISABLED), 227 /* Note the datasheet only guarantees reliable operation up to 228 * 3.3V, this needs to be enforced via dts provided constraints */ 229 AXP_DESC_IO(AXP22X, LDO_IO1, "ldo_io1", "ips", 700, 3800, 100, 230 AXP22X_LDO_IO1_V_OUT, 0x1f, AXP20X_GPIO1_CTRL, 0x07, 231 AXP22X_IO_ENABLED, AXP22X_IO_DISABLED), 232 AXP_DESC_FIXED(AXP22X, RTC_LDO, "rtc_ldo", "ips", 3000), 233 }; 234 235 static const struct regulator_desc axp22x_drivevbus_regulator = { 236 .name = "drivevbus", 237 .supply_name = "drivevbus", 238 .of_match = of_match_ptr("drivevbus"), 239 .regulators_node = of_match_ptr("regulators"), 240 .type = REGULATOR_VOLTAGE, 241 .owner = THIS_MODULE, 242 .enable_reg = AXP20X_VBUS_IPSOUT_MGMT, 243 .enable_mask = BIT(2), 244 .ops = &axp20x_ops_sw, 245 }; 246 247 static const struct regulator_linear_range axp803_dcdc234_ranges[] = { 248 REGULATOR_LINEAR_RANGE(500000, 0x0, 0x46, 10000), 249 REGULATOR_LINEAR_RANGE(1220000, 0x47, 0x4b, 20000), 250 }; 251 252 static const struct regulator_linear_range axp803_dcdc5_ranges[] = { 253 REGULATOR_LINEAR_RANGE(800000, 0x0, 0x20, 10000), 254 REGULATOR_LINEAR_RANGE(1140000, 0x21, 0x44, 20000), 255 }; 256 257 static const struct regulator_linear_range axp803_dcdc6_ranges[] = { 258 REGULATOR_LINEAR_RANGE(600000, 0x0, 0x32, 10000), 259 REGULATOR_LINEAR_RANGE(1120000, 0x33, 0x47, 20000), 260 }; 261 262 /* AXP806's CLDO2 and AXP809's DLDO1 shares the same range */ 263 static const struct regulator_linear_range axp803_dldo2_ranges[] = { 264 REGULATOR_LINEAR_RANGE(700000, 0x0, 0x1a, 100000), 265 REGULATOR_LINEAR_RANGE(3400000, 0x1b, 0x1f, 200000), 266 }; 267 268 static const struct regulator_desc axp803_regulators[] = { 269 AXP_DESC(AXP803, DCDC1, "dcdc1", "vin1", 1600, 3400, 100, 270 AXP803_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(0)), 271 AXP_DESC_RANGES(AXP803, DCDC2, "dcdc2", "vin2", axp803_dcdc234_ranges, 272 76, AXP803_DCDC2_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1, 273 BIT(1)), 274 AXP_DESC_RANGES(AXP803, DCDC3, "dcdc3", "vin3", axp803_dcdc234_ranges, 275 76, AXP803_DCDC3_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1, 276 BIT(2)), 277 AXP_DESC_RANGES(AXP803, DCDC4, "dcdc4", "vin4", axp803_dcdc234_ranges, 278 76, AXP803_DCDC4_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1, 279 BIT(3)), 280 AXP_DESC_RANGES(AXP803, DCDC5, "dcdc5", "vin5", axp803_dcdc5_ranges, 281 68, AXP803_DCDC5_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1, 282 BIT(4)), 283 AXP_DESC_RANGES(AXP803, DCDC6, "dcdc6", "vin6", axp803_dcdc6_ranges, 284 72, AXP803_DCDC6_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1, 285 BIT(5)), 286 /* secondary switchable output of DCDC1 */ 287 AXP_DESC_SW(AXP803, DC1SW, "dc1sw", NULL, AXP22X_PWR_OUT_CTRL2, 288 BIT(7)), 289 AXP_DESC(AXP803, ALDO1, "aldo1", "aldoin", 700, 3300, 100, 290 AXP22X_ALDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(5)), 291 AXP_DESC(AXP803, ALDO2, "aldo2", "aldoin", 700, 3300, 100, 292 AXP22X_ALDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(6)), 293 AXP_DESC(AXP803, ALDO3, "aldo3", "aldoin", 700, 3300, 100, 294 AXP22X_ALDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(7)), 295 AXP_DESC(AXP803, DLDO1, "dldo1", "dldoin", 700, 3300, 100, 296 AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(3)), 297 AXP_DESC_RANGES(AXP803, DLDO2, "dldo2", "dldoin", axp803_dldo2_ranges, 298 32, AXP22X_DLDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, 299 BIT(4)), 300 AXP_DESC(AXP803, DLDO3, "dldo3", "dldoin", 700, 3300, 100, 301 AXP22X_DLDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(5)), 302 AXP_DESC(AXP803, DLDO4, "dldo4", "dldoin", 700, 3300, 100, 303 AXP22X_DLDO4_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(6)), 304 AXP_DESC(AXP803, ELDO1, "eldo1", "eldoin", 700, 1900, 50, 305 AXP22X_ELDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(0)), 306 AXP_DESC(AXP803, ELDO2, "eldo2", "eldoin", 700, 1900, 50, 307 AXP22X_ELDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(1)), 308 AXP_DESC(AXP803, ELDO3, "eldo3", "eldoin", 700, 1900, 50, 309 AXP22X_ELDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(2)), 310 AXP_DESC(AXP803, FLDO1, "fldo1", "fldoin", 700, 1450, 50, 311 AXP803_FLDO1_V_OUT, 0x0f, AXP22X_PWR_OUT_CTRL3, BIT(2)), 312 AXP_DESC(AXP803, FLDO2, "fldo2", "fldoin", 700, 1450, 50, 313 AXP803_FLDO2_V_OUT, 0x0f, AXP22X_PWR_OUT_CTRL3, BIT(3)), 314 AXP_DESC_IO(AXP803, LDO_IO0, "ldo-io0", "ips", 700, 3300, 100, 315 AXP22X_LDO_IO0_V_OUT, 0x1f, AXP20X_GPIO0_CTRL, 0x07, 316 AXP22X_IO_ENABLED, AXP22X_IO_DISABLED), 317 AXP_DESC_IO(AXP803, LDO_IO1, "ldo-io1", "ips", 700, 3300, 100, 318 AXP22X_LDO_IO1_V_OUT, 0x1f, AXP20X_GPIO1_CTRL, 0x07, 319 AXP22X_IO_ENABLED, AXP22X_IO_DISABLED), 320 AXP_DESC_FIXED(AXP803, RTC_LDO, "rtc-ldo", "ips", 3000), 321 }; 322 323 static const struct regulator_linear_range axp806_dcdca_ranges[] = { 324 REGULATOR_LINEAR_RANGE(600000, 0x0, 0x32, 10000), 325 REGULATOR_LINEAR_RANGE(1120000, 0x33, 0x47, 20000), 326 }; 327 328 static const struct regulator_linear_range axp806_dcdcd_ranges[] = { 329 REGULATOR_LINEAR_RANGE(600000, 0x0, 0x2d, 20000), 330 REGULATOR_LINEAR_RANGE(1600000, 0x2e, 0x3f, 100000), 331 }; 332 333 static const struct regulator_desc axp806_regulators[] = { 334 AXP_DESC_RANGES(AXP806, DCDCA, "dcdca", "vina", axp806_dcdca_ranges, 335 72, AXP806_DCDCA_V_CTRL, 0x7f, AXP806_PWR_OUT_CTRL1, 336 BIT(0)), 337 AXP_DESC(AXP806, DCDCB, "dcdcb", "vinb", 1000, 2550, 50, 338 AXP806_DCDCB_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(1)), 339 AXP_DESC_RANGES(AXP806, DCDCC, "dcdcc", "vinc", axp806_dcdca_ranges, 340 72, AXP806_DCDCC_V_CTRL, 0x7f, AXP806_PWR_OUT_CTRL1, 341 BIT(2)), 342 AXP_DESC_RANGES(AXP806, DCDCD, "dcdcd", "vind", axp806_dcdcd_ranges, 343 64, AXP806_DCDCD_V_CTRL, 0x3f, AXP806_PWR_OUT_CTRL1, 344 BIT(3)), 345 AXP_DESC(AXP806, DCDCE, "dcdce", "vine", 1100, 3400, 100, 346 AXP806_DCDCE_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(4)), 347 AXP_DESC(AXP806, ALDO1, "aldo1", "aldoin", 700, 3300, 100, 348 AXP806_ALDO1_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(5)), 349 AXP_DESC(AXP806, ALDO2, "aldo2", "aldoin", 700, 3400, 100, 350 AXP806_ALDO2_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(6)), 351 AXP_DESC(AXP806, ALDO3, "aldo3", "aldoin", 700, 3300, 100, 352 AXP806_ALDO3_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(7)), 353 AXP_DESC(AXP806, BLDO1, "bldo1", "bldoin", 700, 1900, 100, 354 AXP806_BLDO1_V_CTRL, 0x0f, AXP806_PWR_OUT_CTRL2, BIT(0)), 355 AXP_DESC(AXP806, BLDO2, "bldo2", "bldoin", 700, 1900, 100, 356 AXP806_BLDO2_V_CTRL, 0x0f, AXP806_PWR_OUT_CTRL2, BIT(1)), 357 AXP_DESC(AXP806, BLDO3, "bldo3", "bldoin", 700, 1900, 100, 358 AXP806_BLDO3_V_CTRL, 0x0f, AXP806_PWR_OUT_CTRL2, BIT(2)), 359 AXP_DESC(AXP806, BLDO4, "bldo4", "bldoin", 700, 1900, 100, 360 AXP806_BLDO4_V_CTRL, 0x0f, AXP806_PWR_OUT_CTRL2, BIT(3)), 361 AXP_DESC(AXP806, CLDO1, "cldo1", "cldoin", 700, 3300, 100, 362 AXP806_CLDO1_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL2, BIT(4)), 363 AXP_DESC_RANGES(AXP806, CLDO2, "cldo2", "cldoin", axp803_dldo2_ranges, 364 32, AXP806_CLDO2_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL2, 365 BIT(5)), 366 AXP_DESC(AXP806, CLDO3, "cldo3", "cldoin", 700, 3300, 100, 367 AXP806_CLDO3_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL2, BIT(6)), 368 AXP_DESC_SW(AXP806, SW, "sw", "swin", AXP806_PWR_OUT_CTRL2, BIT(7)), 369 }; 370 371 static const struct regulator_linear_range axp809_dcdc4_ranges[] = { 372 REGULATOR_LINEAR_RANGE(600000, 0x0, 0x2f, 20000), 373 REGULATOR_LINEAR_RANGE(1800000, 0x30, 0x38, 100000), 374 }; 375 376 static const struct regulator_desc axp809_regulators[] = { 377 AXP_DESC(AXP809, DCDC1, "dcdc1", "vin1", 1600, 3400, 100, 378 AXP22X_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(1)), 379 AXP_DESC(AXP809, DCDC2, "dcdc2", "vin2", 600, 1540, 20, 380 AXP22X_DCDC2_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(2)), 381 AXP_DESC(AXP809, DCDC3, "dcdc3", "vin3", 600, 1860, 20, 382 AXP22X_DCDC3_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(3)), 383 AXP_DESC_RANGES(AXP809, DCDC4, "dcdc4", "vin4", axp809_dcdc4_ranges, 384 57, AXP22X_DCDC4_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, 385 BIT(4)), 386 AXP_DESC(AXP809, DCDC5, "dcdc5", "vin5", 1000, 2550, 50, 387 AXP22X_DCDC5_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(5)), 388 /* secondary switchable output of DCDC1 */ 389 AXP_DESC_SW(AXP809, DC1SW, "dc1sw", NULL, AXP22X_PWR_OUT_CTRL2, 390 BIT(7)), 391 /* LDO regulator internally chained to DCDC5 */ 392 AXP_DESC(AXP809, DC5LDO, "dc5ldo", NULL, 700, 1400, 100, 393 AXP22X_DC5LDO_V_OUT, 0x7, AXP22X_PWR_OUT_CTRL1, BIT(0)), 394 AXP_DESC(AXP809, ALDO1, "aldo1", "aldoin", 700, 3300, 100, 395 AXP22X_ALDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(6)), 396 AXP_DESC(AXP809, ALDO2, "aldo2", "aldoin", 700, 3300, 100, 397 AXP22X_ALDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(7)), 398 AXP_DESC(AXP809, ALDO3, "aldo3", "aldoin", 700, 3300, 100, 399 AXP22X_ALDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(5)), 400 AXP_DESC_RANGES(AXP809, DLDO1, "dldo1", "dldoin", axp803_dldo2_ranges, 401 32, AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, 402 BIT(3)), 403 AXP_DESC(AXP809, DLDO2, "dldo2", "dldoin", 700, 3300, 100, 404 AXP22X_DLDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(4)), 405 AXP_DESC(AXP809, ELDO1, "eldo1", "eldoin", 700, 3300, 100, 406 AXP22X_ELDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(0)), 407 AXP_DESC(AXP809, ELDO2, "eldo2", "eldoin", 700, 3300, 100, 408 AXP22X_ELDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(1)), 409 AXP_DESC(AXP809, ELDO3, "eldo3", "eldoin", 700, 3300, 100, 410 AXP22X_ELDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(2)), 411 /* 412 * Note the datasheet only guarantees reliable operation up to 413 * 3.3V, this needs to be enforced via dts provided constraints 414 */ 415 AXP_DESC_IO(AXP809, LDO_IO0, "ldo_io0", "ips", 700, 3800, 100, 416 AXP22X_LDO_IO0_V_OUT, 0x1f, AXP20X_GPIO0_CTRL, 0x07, 417 AXP22X_IO_ENABLED, AXP22X_IO_DISABLED), 418 /* 419 * Note the datasheet only guarantees reliable operation up to 420 * 3.3V, this needs to be enforced via dts provided constraints 421 */ 422 AXP_DESC_IO(AXP809, LDO_IO1, "ldo_io1", "ips", 700, 3800, 100, 423 AXP22X_LDO_IO1_V_OUT, 0x1f, AXP20X_GPIO1_CTRL, 0x07, 424 AXP22X_IO_ENABLED, AXP22X_IO_DISABLED), 425 AXP_DESC_FIXED(AXP809, RTC_LDO, "rtc_ldo", "ips", 1800), 426 AXP_DESC_SW(AXP809, SW, "sw", "swin", AXP22X_PWR_OUT_CTRL2, BIT(6)), 427 }; 428 429 static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq) 430 { 431 struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent); 432 unsigned int reg = AXP20X_DCDC_FREQ; 433 u32 min, max, def, step; 434 435 switch (axp20x->variant) { 436 case AXP202_ID: 437 case AXP209_ID: 438 min = 750; 439 max = 1875; 440 def = 1500; 441 step = 75; 442 break; 443 case AXP803_ID: 444 /* 445 * AXP803 DCDC work frequency setting has the same range and 446 * step as AXP22X, but at a different register. 447 * Fall through to the check below. 448 * (See include/linux/mfd/axp20x.h) 449 */ 450 reg = AXP803_DCDC_FREQ_CTRL; 451 case AXP806_ID: 452 /* 453 * AXP806 also have DCDC work frequency setting register at a 454 * different position. 455 */ 456 if (axp20x->variant == AXP806_ID) 457 reg = AXP806_DCDC_FREQ_CTRL; 458 case AXP221_ID: 459 case AXP223_ID: 460 case AXP809_ID: 461 min = 1800; 462 max = 4050; 463 def = 3000; 464 step = 150; 465 break; 466 default: 467 dev_err(&pdev->dev, 468 "Setting DCDC frequency for unsupported AXP variant\n"); 469 return -EINVAL; 470 } 471 472 if (dcdcfreq == 0) 473 dcdcfreq = def; 474 475 if (dcdcfreq < min) { 476 dcdcfreq = min; 477 dev_warn(&pdev->dev, "DCDC frequency too low. Set to %ukHz\n", 478 min); 479 } 480 481 if (dcdcfreq > max) { 482 dcdcfreq = max; 483 dev_warn(&pdev->dev, "DCDC frequency too high. Set to %ukHz\n", 484 max); 485 } 486 487 dcdcfreq = (dcdcfreq - min) / step; 488 489 return regmap_update_bits(axp20x->regmap, reg, 490 AXP20X_FREQ_DCDC_MASK, dcdcfreq); 491 } 492 493 static int axp20x_regulator_parse_dt(struct platform_device *pdev) 494 { 495 struct device_node *np, *regulators; 496 int ret; 497 u32 dcdcfreq = 0; 498 499 np = of_node_get(pdev->dev.parent->of_node); 500 if (!np) 501 return 0; 502 503 regulators = of_get_child_by_name(np, "regulators"); 504 if (!regulators) { 505 dev_warn(&pdev->dev, "regulators node not found\n"); 506 } else { 507 of_property_read_u32(regulators, "x-powers,dcdc-freq", &dcdcfreq); 508 ret = axp20x_set_dcdc_freq(pdev, dcdcfreq); 509 if (ret < 0) { 510 dev_err(&pdev->dev, "Error setting dcdc frequency: %d\n", ret); 511 return ret; 512 } 513 514 of_node_put(regulators); 515 } 516 517 return 0; 518 } 519 520 static int axp20x_set_dcdc_workmode(struct regulator_dev *rdev, int id, u32 workmode) 521 { 522 struct axp20x_dev *axp20x = rdev_get_drvdata(rdev); 523 unsigned int reg = AXP20X_DCDC_MODE; 524 unsigned int mask; 525 526 switch (axp20x->variant) { 527 case AXP202_ID: 528 case AXP209_ID: 529 if ((id != AXP20X_DCDC2) && (id != AXP20X_DCDC3)) 530 return -EINVAL; 531 532 mask = AXP20X_WORKMODE_DCDC2_MASK; 533 if (id == AXP20X_DCDC3) 534 mask = AXP20X_WORKMODE_DCDC3_MASK; 535 536 workmode <<= ffs(mask) - 1; 537 break; 538 539 case AXP806_ID: 540 reg = AXP806_DCDC_MODE_CTRL2; 541 /* 542 * AXP806 DCDC regulator IDs have the same range as AXP22X. 543 * Fall through to the check below. 544 * (See include/linux/mfd/axp20x.h) 545 */ 546 case AXP221_ID: 547 case AXP223_ID: 548 case AXP809_ID: 549 if (id < AXP22X_DCDC1 || id > AXP22X_DCDC5) 550 return -EINVAL; 551 552 mask = AXP22X_WORKMODE_DCDCX_MASK(id - AXP22X_DCDC1); 553 workmode <<= id - AXP22X_DCDC1; 554 break; 555 556 case AXP803_ID: 557 if (id < AXP803_DCDC1 || id > AXP803_DCDC6) 558 return -EINVAL; 559 560 mask = AXP22X_WORKMODE_DCDCX_MASK(id - AXP803_DCDC1); 561 workmode <<= id - AXP803_DCDC1; 562 break; 563 564 default: 565 /* should not happen */ 566 WARN_ON(1); 567 return -EINVAL; 568 } 569 570 return regmap_update_bits(rdev->regmap, reg, mask, workmode); 571 } 572 573 /* 574 * This function checks whether a regulator is part of a poly-phase 575 * output setup based on the registers settings. Returns true if it is. 576 */ 577 static bool axp20x_is_polyphase_slave(struct axp20x_dev *axp20x, int id) 578 { 579 u32 reg = 0; 580 581 /* 582 * Currently in our supported AXP variants, only AXP803 and AXP806 583 * have polyphase regulators. 584 */ 585 switch (axp20x->variant) { 586 case AXP803_ID: 587 regmap_read(axp20x->regmap, AXP803_POLYPHASE_CTRL, ®); 588 589 switch (id) { 590 case AXP803_DCDC3: 591 return !!(reg & BIT(6)); 592 case AXP803_DCDC6: 593 return !!(reg & BIT(7)); 594 } 595 break; 596 597 case AXP806_ID: 598 regmap_read(axp20x->regmap, AXP806_DCDC_MODE_CTRL2, ®); 599 600 switch (id) { 601 case AXP806_DCDCB: 602 return (((reg & GENMASK(7, 6)) == BIT(6)) || 603 ((reg & GENMASK(7, 6)) == BIT(7))); 604 case AXP806_DCDCC: 605 return ((reg & GENMASK(7, 6)) == BIT(7)); 606 case AXP806_DCDCE: 607 return !!(reg & BIT(5)); 608 } 609 break; 610 611 default: 612 return false; 613 } 614 615 return false; 616 } 617 618 static int axp20x_regulator_probe(struct platform_device *pdev) 619 { 620 struct regulator_dev *rdev; 621 struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent); 622 const struct regulator_desc *regulators; 623 struct regulator_config config = { 624 .dev = pdev->dev.parent, 625 .regmap = axp20x->regmap, 626 .driver_data = axp20x, 627 }; 628 int ret, i, nregulators; 629 u32 workmode; 630 const char *dcdc1_name = axp22x_regulators[AXP22X_DCDC1].name; 631 const char *dcdc5_name = axp22x_regulators[AXP22X_DCDC5].name; 632 bool drivevbus = false; 633 634 switch (axp20x->variant) { 635 case AXP202_ID: 636 case AXP209_ID: 637 regulators = axp20x_regulators; 638 nregulators = AXP20X_REG_ID_MAX; 639 break; 640 case AXP221_ID: 641 case AXP223_ID: 642 regulators = axp22x_regulators; 643 nregulators = AXP22X_REG_ID_MAX; 644 drivevbus = of_property_read_bool(pdev->dev.parent->of_node, 645 "x-powers,drive-vbus-en"); 646 break; 647 case AXP803_ID: 648 regulators = axp803_regulators; 649 nregulators = AXP803_REG_ID_MAX; 650 break; 651 case AXP806_ID: 652 regulators = axp806_regulators; 653 nregulators = AXP806_REG_ID_MAX; 654 break; 655 case AXP809_ID: 656 regulators = axp809_regulators; 657 nregulators = AXP809_REG_ID_MAX; 658 break; 659 default: 660 dev_err(&pdev->dev, "Unsupported AXP variant: %ld\n", 661 axp20x->variant); 662 return -EINVAL; 663 } 664 665 /* This only sets the dcdc freq. Ignore any errors */ 666 axp20x_regulator_parse_dt(pdev); 667 668 for (i = 0; i < nregulators; i++) { 669 const struct regulator_desc *desc = ®ulators[i]; 670 struct regulator_desc *new_desc; 671 672 /* 673 * If this regulator is a slave in a poly-phase setup, 674 * skip it, as its controls are bound to the master 675 * regulator and won't work. 676 */ 677 if (axp20x_is_polyphase_slave(axp20x, i)) 678 continue; 679 680 /* 681 * Regulators DC1SW and DC5LDO are connected internally, 682 * so we have to handle their supply names separately. 683 * 684 * We always register the regulators in proper sequence, 685 * so the supply names are correctly read. See the last 686 * part of this loop to see where we save the DT defined 687 * name. 688 */ 689 if ((regulators == axp22x_regulators && i == AXP22X_DC1SW) || 690 (regulators == axp803_regulators && i == AXP803_DC1SW) || 691 (regulators == axp809_regulators && i == AXP809_DC1SW)) { 692 new_desc = devm_kzalloc(&pdev->dev, sizeof(*desc), 693 GFP_KERNEL); 694 if (!new_desc) 695 return -ENOMEM; 696 697 *new_desc = regulators[i]; 698 new_desc->supply_name = dcdc1_name; 699 desc = new_desc; 700 } 701 702 if ((regulators == axp22x_regulators && i == AXP22X_DC5LDO) || 703 (regulators == axp809_regulators && i == AXP809_DC5LDO)) { 704 new_desc = devm_kzalloc(&pdev->dev, sizeof(*desc), 705 GFP_KERNEL); 706 if (!new_desc) 707 return -ENOMEM; 708 709 *new_desc = regulators[i]; 710 new_desc->supply_name = dcdc5_name; 711 desc = new_desc; 712 } 713 714 rdev = devm_regulator_register(&pdev->dev, desc, &config); 715 if (IS_ERR(rdev)) { 716 dev_err(&pdev->dev, "Failed to register %s\n", 717 regulators[i].name); 718 719 return PTR_ERR(rdev); 720 } 721 722 ret = of_property_read_u32(rdev->dev.of_node, 723 "x-powers,dcdc-workmode", 724 &workmode); 725 if (!ret) { 726 if (axp20x_set_dcdc_workmode(rdev, i, workmode)) 727 dev_err(&pdev->dev, "Failed to set workmode on %s\n", 728 rdev->desc->name); 729 } 730 731 /* 732 * Save AXP22X DCDC1 / DCDC5 regulator names for later. 733 */ 734 if ((regulators == axp22x_regulators && i == AXP22X_DCDC1) || 735 (regulators == axp809_regulators && i == AXP809_DCDC1)) 736 of_property_read_string(rdev->dev.of_node, 737 "regulator-name", 738 &dcdc1_name); 739 740 if ((regulators == axp22x_regulators && i == AXP22X_DCDC5) || 741 (regulators == axp809_regulators && i == AXP809_DCDC5)) 742 of_property_read_string(rdev->dev.of_node, 743 "regulator-name", 744 &dcdc5_name); 745 } 746 747 if (drivevbus) { 748 /* Change N_VBUSEN sense pin to DRIVEVBUS output pin */ 749 regmap_update_bits(axp20x->regmap, AXP20X_OVER_TMP, 750 AXP22X_MISC_N_VBUSEN_FUNC, 0); 751 rdev = devm_regulator_register(&pdev->dev, 752 &axp22x_drivevbus_regulator, 753 &config); 754 if (IS_ERR(rdev)) { 755 dev_err(&pdev->dev, "Failed to register drivevbus\n"); 756 return PTR_ERR(rdev); 757 } 758 } 759 760 return 0; 761 } 762 763 static struct platform_driver axp20x_regulator_driver = { 764 .probe = axp20x_regulator_probe, 765 .driver = { 766 .name = "axp20x-regulator", 767 }, 768 }; 769 770 module_platform_driver(axp20x_regulator_driver); 771 772 MODULE_LICENSE("GPL v2"); 773 MODULE_AUTHOR("Carlo Caione <carlo@caione.org>"); 774 MODULE_DESCRIPTION("Regulator Driver for AXP20X PMIC"); 775 MODULE_ALIAS("platform:axp20x-regulator"); 776