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286 lines
9.2 KiB
286 lines
9.2 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Regulators driver for Marvell 88PM800 |
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* |
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* Copyright (C) 2012 Marvell International Ltd. |
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* Joseph(Yossi) Hanin <[email protected]> |
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* Yi Zhang <[email protected]> |
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*/ |
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#include <linux/module.h> |
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#include <linux/moduleparam.h> |
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#include <linux/init.h> |
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#include <linux/err.h> |
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#include <linux/regmap.h> |
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#include <linux/regulator/driver.h> |
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#include <linux/regulator/machine.h> |
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#include <linux/mfd/88pm80x.h> |
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#include <linux/delay.h> |
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#include <linux/io.h> |
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#include <linux/of.h> |
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#include <linux/regulator/of_regulator.h> |
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/* LDO1 with DVC[0..3] */ |
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#define PM800_LDO1_VOUT (0x08) /* VOUT1 */ |
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#define PM800_LDO1_VOUT_2 (0x09) |
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#define PM800_LDO1_VOUT_3 (0x0A) |
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#define PM800_LDO2_VOUT (0x0B) |
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#define PM800_LDO3_VOUT (0x0C) |
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#define PM800_LDO4_VOUT (0x0D) |
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#define PM800_LDO5_VOUT (0x0E) |
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#define PM800_LDO6_VOUT (0x0F) |
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#define PM800_LDO7_VOUT (0x10) |
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#define PM800_LDO8_VOUT (0x11) |
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#define PM800_LDO9_VOUT (0x12) |
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#define PM800_LDO10_VOUT (0x13) |
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#define PM800_LDO11_VOUT (0x14) |
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#define PM800_LDO12_VOUT (0x15) |
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#define PM800_LDO13_VOUT (0x16) |
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#define PM800_LDO14_VOUT (0x17) |
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#define PM800_LDO15_VOUT (0x18) |
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#define PM800_LDO16_VOUT (0x19) |
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#define PM800_LDO17_VOUT (0x1A) |
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#define PM800_LDO18_VOUT (0x1B) |
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#define PM800_LDO19_VOUT (0x1C) |
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/* BUCK1 with DVC[0..3] */ |
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#define PM800_BUCK1 (0x3C) |
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#define PM800_BUCK1_1 (0x3D) |
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#define PM800_BUCK1_2 (0x3E) |
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#define PM800_BUCK1_3 (0x3F) |
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#define PM800_BUCK2 (0x40) |
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#define PM800_BUCK3 (0x41) |
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#define PM800_BUCK4 (0x42) |
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#define PM800_BUCK4_1 (0x43) |
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#define PM800_BUCK4_2 (0x44) |
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#define PM800_BUCK4_3 (0x45) |
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#define PM800_BUCK5 (0x46) |
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#define PM800_BUCK_ENA (0x50) |
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#define PM800_LDO_ENA1_1 (0x51) |
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#define PM800_LDO_ENA1_2 (0x52) |
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#define PM800_LDO_ENA1_3 (0x53) |
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#define PM800_LDO_ENA2_1 (0x56) |
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#define PM800_LDO_ENA2_2 (0x57) |
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#define PM800_LDO_ENA2_3 (0x58) |
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#define PM800_BUCK1_MISC1 (0x78) |
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#define PM800_BUCK3_MISC1 (0x7E) |
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#define PM800_BUCK4_MISC1 (0x81) |
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#define PM800_BUCK5_MISC1 (0x84) |
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struct pm800_regulator_info { |
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struct regulator_desc desc; |
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int max_ua; |
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}; |
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/* |
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* vreg - the buck regs string. |
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* ereg - the string for the enable register. |
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* ebit - the bit number in the enable register. |
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* amax - the current |
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* Buck has 2 kinds of voltage steps. It is easy to find voltage by ranges, |
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* not the constant voltage table. |
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* n_volt - Number of available selectors |
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*/ |
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#define PM800_BUCK(match, vreg, ereg, ebit, amax, volt_ranges, n_volt) \ |
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{ \ |
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.desc = { \ |
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.name = #vreg, \ |
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.of_match = of_match_ptr(#match), \ |
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.regulators_node = of_match_ptr("regulators"), \ |
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.ops = &pm800_volt_range_ops, \ |
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.type = REGULATOR_VOLTAGE, \ |
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.id = PM800_ID_##vreg, \ |
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.owner = THIS_MODULE, \ |
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.n_voltages = n_volt, \ |
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.linear_ranges = volt_ranges, \ |
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.n_linear_ranges = ARRAY_SIZE(volt_ranges), \ |
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.vsel_reg = PM800_##vreg, \ |
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.vsel_mask = 0x7f, \ |
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.enable_reg = PM800_##ereg, \ |
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.enable_mask = 1 << (ebit), \ |
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}, \ |
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.max_ua = (amax), \ |
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} |
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/* |
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* vreg - the LDO regs string |
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* ereg - the string for the enable register. |
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* ebit - the bit number in the enable register. |
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* amax - the current |
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* volt_table - the LDO voltage table |
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* For all the LDOes, there are too many ranges. Using volt_table will be |
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* simpler and faster. |
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*/ |
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#define PM800_LDO(match, vreg, ereg, ebit, amax, ldo_volt_table) \ |
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{ \ |
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.desc = { \ |
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.name = #vreg, \ |
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.of_match = of_match_ptr(#match), \ |
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.regulators_node = of_match_ptr("regulators"), \ |
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.ops = &pm800_volt_table_ops, \ |
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.type = REGULATOR_VOLTAGE, \ |
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.id = PM800_ID_##vreg, \ |
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.owner = THIS_MODULE, \ |
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.n_voltages = ARRAY_SIZE(ldo_volt_table), \ |
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.vsel_reg = PM800_##vreg##_VOUT, \ |
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.vsel_mask = 0xf, \ |
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.enable_reg = PM800_##ereg, \ |
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.enable_mask = 1 << (ebit), \ |
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.volt_table = ldo_volt_table, \ |
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}, \ |
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.max_ua = (amax), \ |
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} |
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/* Ranges are sorted in ascending order. */ |
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static const struct linear_range buck1_volt_range[] = { |
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REGULATOR_LINEAR_RANGE(600000, 0, 0x4f, 12500), |
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REGULATOR_LINEAR_RANGE(1600000, 0x50, 0x54, 50000), |
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}; |
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/* BUCK 2~5 have same ranges. */ |
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static const struct linear_range buck2_5_volt_range[] = { |
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REGULATOR_LINEAR_RANGE(600000, 0, 0x4f, 12500), |
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REGULATOR_LINEAR_RANGE(1600000, 0x50, 0x72, 50000), |
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}; |
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static const unsigned int ldo1_volt_table[] = { |
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600000, 650000, 700000, 750000, 800000, 850000, 900000, 950000, |
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1000000, 1050000, 1100000, 1150000, 1200000, 1300000, 1400000, 1500000, |
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}; |
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static const unsigned int ldo2_volt_table[] = { |
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1700000, 1800000, 1900000, 2000000, 2100000, 2500000, 2700000, 2800000, |
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}; |
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/* LDO 3~17 have same voltage table. */ |
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static const unsigned int ldo3_17_volt_table[] = { |
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1200000, 1250000, 1700000, 1800000, 1850000, 1900000, 2500000, 2600000, |
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2700000, 2750000, 2800000, 2850000, 2900000, 3000000, 3100000, 3300000, |
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}; |
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/* LDO 18~19 have same voltage table. */ |
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static const unsigned int ldo18_19_volt_table[] = { |
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1700000, 1800000, 1900000, 2500000, 2800000, 2900000, 3100000, 3300000, |
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}; |
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static int pm800_get_current_limit(struct regulator_dev *rdev) |
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{ |
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struct pm800_regulator_info *info = rdev_get_drvdata(rdev); |
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return info->max_ua; |
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} |
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static const struct regulator_ops pm800_volt_range_ops = { |
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.list_voltage = regulator_list_voltage_linear_range, |
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.map_voltage = regulator_map_voltage_linear_range, |
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.set_voltage_sel = regulator_set_voltage_sel_regmap, |
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.get_voltage_sel = regulator_get_voltage_sel_regmap, |
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.enable = regulator_enable_regmap, |
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.disable = regulator_disable_regmap, |
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.is_enabled = regulator_is_enabled_regmap, |
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.get_current_limit = pm800_get_current_limit, |
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}; |
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static const struct regulator_ops pm800_volt_table_ops = { |
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.list_voltage = regulator_list_voltage_table, |
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.map_voltage = regulator_map_voltage_iterate, |
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.set_voltage_sel = regulator_set_voltage_sel_regmap, |
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.get_voltage_sel = regulator_get_voltage_sel_regmap, |
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.enable = regulator_enable_regmap, |
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.disable = regulator_disable_regmap, |
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.is_enabled = regulator_is_enabled_regmap, |
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.get_current_limit = pm800_get_current_limit, |
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}; |
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/* The array is indexed by id(PM800_ID_XXX) */ |
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static struct pm800_regulator_info pm800_regulator_info[] = { |
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PM800_BUCK(buck1, BUCK1, BUCK_ENA, 0, 3000000, buck1_volt_range, 0x55), |
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PM800_BUCK(buck2, BUCK2, BUCK_ENA, 1, 1200000, buck2_5_volt_range, 0x73), |
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PM800_BUCK(buck3, BUCK3, BUCK_ENA, 2, 1200000, buck2_5_volt_range, 0x73), |
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PM800_BUCK(buck4, BUCK4, BUCK_ENA, 3, 1200000, buck2_5_volt_range, 0x73), |
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PM800_BUCK(buck5, BUCK5, BUCK_ENA, 4, 1200000, buck2_5_volt_range, 0x73), |
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PM800_LDO(ldo1, LDO1, LDO_ENA1_1, 0, 200000, ldo1_volt_table), |
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PM800_LDO(ldo2, LDO2, LDO_ENA1_1, 1, 10000, ldo2_volt_table), |
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PM800_LDO(ldo3, LDO3, LDO_ENA1_1, 2, 300000, ldo3_17_volt_table), |
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PM800_LDO(ldo4, LDO4, LDO_ENA1_1, 3, 300000, ldo3_17_volt_table), |
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PM800_LDO(ldo5, LDO5, LDO_ENA1_1, 4, 300000, ldo3_17_volt_table), |
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PM800_LDO(ldo6, LDO6, LDO_ENA1_1, 5, 300000, ldo3_17_volt_table), |
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PM800_LDO(ldo7, LDO7, LDO_ENA1_1, 6, 300000, ldo3_17_volt_table), |
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PM800_LDO(ldo8, LDO8, LDO_ENA1_1, 7, 300000, ldo3_17_volt_table), |
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PM800_LDO(ldo9, LDO9, LDO_ENA1_2, 0, 300000, ldo3_17_volt_table), |
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PM800_LDO(ldo10, LDO10, LDO_ENA1_2, 1, 300000, ldo3_17_volt_table), |
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PM800_LDO(ldo11, LDO11, LDO_ENA1_2, 2, 300000, ldo3_17_volt_table), |
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PM800_LDO(ldo12, LDO12, LDO_ENA1_2, 3, 300000, ldo3_17_volt_table), |
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PM800_LDO(ldo13, LDO13, LDO_ENA1_2, 4, 300000, ldo3_17_volt_table), |
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PM800_LDO(ldo14, LDO14, LDO_ENA1_2, 5, 300000, ldo3_17_volt_table), |
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PM800_LDO(ldo15, LDO15, LDO_ENA1_2, 6, 300000, ldo3_17_volt_table), |
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PM800_LDO(ldo16, LDO16, LDO_ENA1_2, 7, 300000, ldo3_17_volt_table), |
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PM800_LDO(ldo17, LDO17, LDO_ENA1_3, 0, 300000, ldo3_17_volt_table), |
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PM800_LDO(ldo18, LDO18, LDO_ENA1_3, 1, 200000, ldo18_19_volt_table), |
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PM800_LDO(ldo19, LDO19, LDO_ENA1_3, 2, 200000, ldo18_19_volt_table), |
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}; |
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static int pm800_regulator_probe(struct platform_device *pdev) |
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{ |
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struct pm80x_chip *chip = dev_get_drvdata(pdev->dev.parent); |
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struct pm80x_platform_data *pdata = dev_get_platdata(pdev->dev.parent); |
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struct regulator_config config = { }; |
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struct regulator_init_data *init_data; |
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int i, ret; |
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if (pdata && pdata->num_regulators) { |
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unsigned int count = 0; |
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/* Check whether num_regulator is valid. */ |
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for (i = 0; i < ARRAY_SIZE(pdata->regulators); i++) { |
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if (pdata->regulators[i]) |
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count++; |
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} |
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if (count != pdata->num_regulators) |
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return -EINVAL; |
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} |
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config.dev = chip->dev; |
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config.regmap = chip->subchip->regmap_power; |
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for (i = 0; i < PM800_ID_RG_MAX; i++) { |
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struct regulator_dev *regulator; |
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if (pdata && pdata->num_regulators) { |
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init_data = pdata->regulators[i]; |
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if (!init_data) |
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continue; |
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config.init_data = init_data; |
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} |
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config.driver_data = &pm800_regulator_info[i]; |
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regulator = devm_regulator_register(&pdev->dev, |
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&pm800_regulator_info[i].desc, &config); |
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if (IS_ERR(regulator)) { |
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ret = PTR_ERR(regulator); |
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dev_err(&pdev->dev, "Failed to register %s\n", |
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pm800_regulator_info[i].desc.name); |
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return ret; |
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} |
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} |
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return 0; |
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} |
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static struct platform_driver pm800_regulator_driver = { |
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.driver = { |
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.name = "88pm80x-regulator", |
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}, |
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.probe = pm800_regulator_probe, |
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}; |
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module_platform_driver(pm800_regulator_driver); |
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MODULE_LICENSE("GPL"); |
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MODULE_AUTHOR("Joseph(Yossi) Hanin <[email protected]>"); |
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MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM800 PMIC"); |
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MODULE_ALIAS("platform:88pm800-regulator");
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