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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 | /* * Regulators driver for Marvell 88PM800 * * Copyright (C) 2012 Marvell International Ltd. * Joseph(Yossi) Hanin <yhanin@marvell.com> * Yi Zhang <yizhang@marvell.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/init.h> #include <linux/err.h> #include <linux/regmap.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> #include <linux/mfd/88pm80x.h> #include <linux/delay.h> #include <linux/io.h> #include <linux/of.h> #include <linux/regulator/of_regulator.h> /* LDO1 with DVC[0..3] */ #define PM800_LDO1_VOUT (0x08) /* VOUT1 */ #define PM800_LDO1_VOUT_2 (0x09) #define PM800_LDO1_VOUT_3 (0x0A) #define PM800_LDO2_VOUT (0x0B) #define PM800_LDO3_VOUT (0x0C) #define PM800_LDO4_VOUT (0x0D) #define PM800_LDO5_VOUT (0x0E) #define PM800_LDO6_VOUT (0x0F) #define PM800_LDO7_VOUT (0x10) #define PM800_LDO8_VOUT (0x11) #define PM800_LDO9_VOUT (0x12) #define PM800_LDO10_VOUT (0x13) #define PM800_LDO11_VOUT (0x14) #define PM800_LDO12_VOUT (0x15) #define PM800_LDO13_VOUT (0x16) #define PM800_LDO14_VOUT (0x17) #define PM800_LDO15_VOUT (0x18) #define PM800_LDO16_VOUT (0x19) #define PM800_LDO17_VOUT (0x1A) #define PM800_LDO18_VOUT (0x1B) #define PM800_LDO19_VOUT (0x1C) /* BUCK1 with DVC[0..3] */ #define PM800_BUCK1 (0x3C) #define PM800_BUCK1_1 (0x3D) #define PM800_BUCK1_2 (0x3E) #define PM800_BUCK1_3 (0x3F) #define PM800_BUCK2 (0x40) #define PM800_BUCK3 (0x41) #define PM800_BUCK4 (0x42) #define PM800_BUCK4_1 (0x43) #define PM800_BUCK4_2 (0x44) #define PM800_BUCK4_3 (0x45) #define PM800_BUCK5 (0x46) #define PM800_BUCK_ENA (0x50) #define PM800_LDO_ENA1_1 (0x51) #define PM800_LDO_ENA1_2 (0x52) #define PM800_LDO_ENA1_3 (0x53) #define PM800_LDO_ENA2_1 (0x56) #define PM800_LDO_ENA2_2 (0x57) #define PM800_LDO_ENA2_3 (0x58) #define PM800_BUCK1_MISC1 (0x78) #define PM800_BUCK3_MISC1 (0x7E) #define PM800_BUCK4_MISC1 (0x81) #define PM800_BUCK5_MISC1 (0x84) struct pm800_regulator_info { struct regulator_desc desc; int max_ua; }; struct pm800_regulators { struct pm80x_chip *chip; struct regmap *map; }; /* * vreg - the buck regs string. * ereg - the string for the enable register. * ebit - the bit number in the enable register. * amax - the current * Buck has 2 kinds of voltage steps. It is easy to find voltage by ranges, * not the constant voltage table. * n_volt - Number of available selectors */ #define PM800_BUCK(match, vreg, ereg, ebit, amax, volt_ranges, n_volt) \ { \ .desc = { \ .name = #vreg, \ .of_match = of_match_ptr(#match), \ .regulators_node = of_match_ptr("regulators"), \ .ops = &pm800_volt_range_ops, \ .type = REGULATOR_VOLTAGE, \ .id = PM800_ID_##vreg, \ .owner = THIS_MODULE, \ .n_voltages = n_volt, \ .linear_ranges = volt_ranges, \ .n_linear_ranges = ARRAY_SIZE(volt_ranges), \ .vsel_reg = PM800_##vreg, \ .vsel_mask = 0x7f, \ .enable_reg = PM800_##ereg, \ .enable_mask = 1 << (ebit), \ }, \ .max_ua = (amax), \ } /* * vreg - the LDO regs string * ereg - the string for the enable register. * ebit - the bit number in the enable register. * amax - the current * volt_table - the LDO voltage table * For all the LDOes, there are too many ranges. Using volt_table will be * simpler and faster. */ #define PM800_LDO(match, vreg, ereg, ebit, amax, ldo_volt_table) \ { \ .desc = { \ .name = #vreg, \ .of_match = of_match_ptr(#match), \ .regulators_node = of_match_ptr("regulators"), \ .ops = &pm800_volt_table_ops, \ .type = REGULATOR_VOLTAGE, \ .id = PM800_ID_##vreg, \ .owner = THIS_MODULE, \ .n_voltages = ARRAY_SIZE(ldo_volt_table), \ .vsel_reg = PM800_##vreg##_VOUT, \ .vsel_mask = 0xf, \ .enable_reg = PM800_##ereg, \ .enable_mask = 1 << (ebit), \ .volt_table = ldo_volt_table, \ }, \ .max_ua = (amax), \ } /* Ranges are sorted in ascending order. */ static const struct regulator_linear_range buck1_volt_range[] = { REGULATOR_LINEAR_RANGE(600000, 0, 0x4f, 12500), REGULATOR_LINEAR_RANGE(1600000, 0x50, 0x54, 50000), }; /* BUCK 2~5 have same ranges. */ static const struct regulator_linear_range buck2_5_volt_range[] = { REGULATOR_LINEAR_RANGE(600000, 0, 0x4f, 12500), REGULATOR_LINEAR_RANGE(1600000, 0x50, 0x72, 50000), }; static const unsigned int ldo1_volt_table[] = { 600000, 650000, 700000, 750000, 800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000, 1200000, 1300000, 1400000, 1500000, }; static const unsigned int ldo2_volt_table[] = { 1700000, 1800000, 1900000, 2000000, 2100000, 2500000, 2700000, 2800000, }; /* LDO 3~17 have same voltage table. */ static const unsigned int ldo3_17_volt_table[] = { 1200000, 1250000, 1700000, 1800000, 1850000, 1900000, 2500000, 2600000, 2700000, 2750000, 2800000, 2850000, 2900000, 3000000, 3100000, 3300000, }; /* LDO 18~19 have same voltage table. */ static const unsigned int ldo18_19_volt_table[] = { 1700000, 1800000, 1900000, 2500000, 2800000, 2900000, 3100000, 3300000, }; static int pm800_get_current_limit(struct regulator_dev *rdev) { struct pm800_regulator_info *info = rdev_get_drvdata(rdev); return info->max_ua; } static struct regulator_ops pm800_volt_range_ops = { .list_voltage = regulator_list_voltage_linear_range, .map_voltage = regulator_map_voltage_linear_range, .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, .get_current_limit = pm800_get_current_limit, }; static struct regulator_ops pm800_volt_table_ops = { .list_voltage = regulator_list_voltage_table, .map_voltage = regulator_map_voltage_iterate, .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, .get_current_limit = pm800_get_current_limit, }; /* The array is indexed by id(PM800_ID_XXX) */ static struct pm800_regulator_info pm800_regulator_info[] = { PM800_BUCK(buck1, BUCK1, BUCK_ENA, 0, 3000000, buck1_volt_range, 0x55), PM800_BUCK(buck2, BUCK2, BUCK_ENA, 1, 1200000, buck2_5_volt_range, 0x73), PM800_BUCK(buck3, BUCK3, BUCK_ENA, 2, 1200000, buck2_5_volt_range, 0x73), PM800_BUCK(buck4, BUCK4, BUCK_ENA, 3, 1200000, buck2_5_volt_range, 0x73), PM800_BUCK(buck5, BUCK5, BUCK_ENA, 4, 1200000, buck2_5_volt_range, 0x73), PM800_LDO(ldo1, LDO1, LDO_ENA1_1, 0, 200000, ldo1_volt_table), PM800_LDO(ldo2, LDO2, LDO_ENA1_1, 1, 10000, ldo2_volt_table), PM800_LDO(ldo3, LDO3, LDO_ENA1_1, 2, 300000, ldo3_17_volt_table), PM800_LDO(ldo4, LDO4, LDO_ENA1_1, 3, 300000, ldo3_17_volt_table), PM800_LDO(ldo5, LDO5, LDO_ENA1_1, 4, 300000, ldo3_17_volt_table), PM800_LDO(ldo6, LDO6, LDO_ENA1_1, 5, 300000, ldo3_17_volt_table), PM800_LDO(ldo7, LDO7, LDO_ENA1_1, 6, 300000, ldo3_17_volt_table), PM800_LDO(ldo8, LDO8, LDO_ENA1_1, 7, 300000, ldo3_17_volt_table), PM800_LDO(ldo9, LDO9, LDO_ENA1_2, 0, 300000, ldo3_17_volt_table), PM800_LDO(ldo10, LDO10, LDO_ENA1_2, 1, 300000, ldo3_17_volt_table), PM800_LDO(ldo11, LDO11, LDO_ENA1_2, 2, 300000, ldo3_17_volt_table), PM800_LDO(ldo12, LDO12, LDO_ENA1_2, 3, 300000, ldo3_17_volt_table), PM800_LDO(ldo13, LDO13, LDO_ENA1_2, 4, 300000, ldo3_17_volt_table), PM800_LDO(ldo14, LDO14, LDO_ENA1_2, 5, 300000, ldo3_17_volt_table), PM800_LDO(ldo15, LDO15, LDO_ENA1_2, 6, 300000, ldo3_17_volt_table), PM800_LDO(ldo16, LDO16, LDO_ENA1_2, 7, 300000, ldo3_17_volt_table), PM800_LDO(ldo17, LDO17, LDO_ENA1_3, 0, 300000, ldo3_17_volt_table), PM800_LDO(ldo18, LDO18, LDO_ENA1_3, 1, 200000, ldo18_19_volt_table), PM800_LDO(ldo19, LDO19, LDO_ENA1_3, 2, 200000, ldo18_19_volt_table), }; static int pm800_regulator_probe(struct platform_device *pdev) { struct pm80x_chip *chip = dev_get_drvdata(pdev->dev.parent); struct pm80x_platform_data *pdata = dev_get_platdata(pdev->dev.parent); struct pm800_regulators *pm800_data; struct regulator_config config = { }; struct regulator_init_data *init_data; int i, ret; if (pdata && pdata->num_regulators) { unsigned int count = 0; /* Check whether num_regulator is valid. */ for (i = 0; i < ARRAY_SIZE(pdata->regulators); i++) { if (pdata->regulators[i]) count++; } if (count != pdata->num_regulators) return -EINVAL; } pm800_data = devm_kzalloc(&pdev->dev, sizeof(*pm800_data), GFP_KERNEL); if (!pm800_data) return -ENOMEM; pm800_data->map = chip->subchip->regmap_power; pm800_data->chip = chip; platform_set_drvdata(pdev, pm800_data); config.dev = chip->dev; config.regmap = pm800_data->map; for (i = 0; i < PM800_ID_RG_MAX; i++) { struct regulator_dev *regulator; if (pdata && pdata->num_regulators) { init_data = pdata->regulators[i]; if (!init_data) continue; config.init_data = init_data; } config.driver_data = &pm800_regulator_info[i]; regulator = devm_regulator_register(&pdev->dev, &pm800_regulator_info[i].desc, &config); if (IS_ERR(regulator)) { ret = PTR_ERR(regulator); dev_err(&pdev->dev, "Failed to register %s\n", pm800_regulator_info[i].desc.name); return ret; } } return 0; } static struct platform_driver pm800_regulator_driver = { .driver = { .name = "88pm80x-regulator", }, .probe = pm800_regulator_probe, }; module_platform_driver(pm800_regulator_driver); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Joseph(Yossi) Hanin <yhanin@marvell.com>"); MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM800 PMIC"); MODULE_ALIAS("platform:88pm800-regulator"); |