651 lines
18 KiB
C
651 lines
18 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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// Copyright (C) STMicroelectronics 2018
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// Author: Pascal Paillet <p.paillet@st.com> for STMicroelectronics.
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#include <linux/interrupt.h>
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#include <linux/mfd/stpmic1.h>
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#include <linux/module.h>
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#include <linux/of_irq.h>
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#include <linux/platform_device.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/regulator/of_regulator.h>
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#include <dt-bindings/mfd/st,stpmic1.h>
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/**
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* struct stpmic1 regulator description: this structure is used as driver data
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* @desc: regulator framework description
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* @mask_reset_reg: mask reset register address
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* @mask_reset_mask: mask rank and mask reset register mask
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* @icc_reg: icc register address
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* @icc_mask: icc register mask
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*/
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struct stpmic1_regulator_cfg {
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struct regulator_desc desc;
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u8 mask_reset_reg;
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u8 mask_reset_mask;
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u8 icc_reg;
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u8 icc_mask;
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};
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static int stpmic1_set_mode(struct regulator_dev *rdev, unsigned int mode);
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static unsigned int stpmic1_get_mode(struct regulator_dev *rdev);
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static int stpmic1_set_icc(struct regulator_dev *rdev, int lim, int severity,
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bool enable);
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static unsigned int stpmic1_map_mode(unsigned int mode);
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enum {
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STPMIC1_BUCK1 = 0,
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STPMIC1_BUCK2 = 1,
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STPMIC1_BUCK3 = 2,
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STPMIC1_BUCK4 = 3,
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STPMIC1_LDO1 = 4,
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STPMIC1_LDO2 = 5,
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STPMIC1_LDO3 = 6,
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STPMIC1_LDO4 = 7,
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STPMIC1_LDO5 = 8,
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STPMIC1_LDO6 = 9,
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STPMIC1_VREF_DDR = 10,
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STPMIC1_BOOST = 11,
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STPMIC1_VBUS_OTG = 12,
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STPMIC1_SW_OUT = 13,
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};
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/* Enable time worst case is 5000mV/(2250uV/uS) */
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#define PMIC_ENABLE_TIME_US 2200
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/* Ramp delay worst case is (2250uV/uS) */
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#define PMIC_RAMP_DELAY 2200
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static const struct linear_range buck1_ranges[] = {
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REGULATOR_LINEAR_RANGE(725000, 0, 4, 0),
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REGULATOR_LINEAR_RANGE(725000, 5, 36, 25000),
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REGULATOR_LINEAR_RANGE(1500000, 37, 63, 0),
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};
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static const struct linear_range buck2_ranges[] = {
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REGULATOR_LINEAR_RANGE(1000000, 0, 17, 0),
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REGULATOR_LINEAR_RANGE(1050000, 18, 19, 0),
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REGULATOR_LINEAR_RANGE(1100000, 20, 21, 0),
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REGULATOR_LINEAR_RANGE(1150000, 22, 23, 0),
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REGULATOR_LINEAR_RANGE(1200000, 24, 25, 0),
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REGULATOR_LINEAR_RANGE(1250000, 26, 27, 0),
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REGULATOR_LINEAR_RANGE(1300000, 28, 29, 0),
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REGULATOR_LINEAR_RANGE(1350000, 30, 31, 0),
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REGULATOR_LINEAR_RANGE(1400000, 32, 33, 0),
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REGULATOR_LINEAR_RANGE(1450000, 34, 35, 0),
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REGULATOR_LINEAR_RANGE(1500000, 36, 63, 0),
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};
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static const struct linear_range buck3_ranges[] = {
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REGULATOR_LINEAR_RANGE(1000000, 0, 19, 0),
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REGULATOR_LINEAR_RANGE(1100000, 20, 23, 0),
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REGULATOR_LINEAR_RANGE(1200000, 24, 27, 0),
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REGULATOR_LINEAR_RANGE(1300000, 28, 31, 0),
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REGULATOR_LINEAR_RANGE(1400000, 32, 35, 0),
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REGULATOR_LINEAR_RANGE(1500000, 36, 55, 100000),
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REGULATOR_LINEAR_RANGE(3400000, 56, 63, 0),
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};
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static const struct linear_range buck4_ranges[] = {
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REGULATOR_LINEAR_RANGE(600000, 0, 27, 25000),
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REGULATOR_LINEAR_RANGE(1300000, 28, 29, 0),
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REGULATOR_LINEAR_RANGE(1350000, 30, 31, 0),
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REGULATOR_LINEAR_RANGE(1400000, 32, 33, 0),
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REGULATOR_LINEAR_RANGE(1450000, 34, 35, 0),
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REGULATOR_LINEAR_RANGE(1500000, 36, 60, 100000),
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REGULATOR_LINEAR_RANGE(3900000, 61, 63, 0),
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};
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static const struct linear_range ldo1_ranges[] = {
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REGULATOR_LINEAR_RANGE(1700000, 0, 7, 0),
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REGULATOR_LINEAR_RANGE(1700000, 8, 24, 100000),
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REGULATOR_LINEAR_RANGE(3300000, 25, 31, 0),
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};
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static const struct linear_range ldo2_ranges[] = {
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REGULATOR_LINEAR_RANGE(1700000, 0, 7, 0),
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REGULATOR_LINEAR_RANGE(1700000, 8, 24, 100000),
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REGULATOR_LINEAR_RANGE(3300000, 25, 30, 0),
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};
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static const struct linear_range ldo3_ranges[] = {
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REGULATOR_LINEAR_RANGE(1700000, 0, 7, 0),
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REGULATOR_LINEAR_RANGE(1700000, 8, 24, 100000),
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REGULATOR_LINEAR_RANGE(3300000, 25, 30, 0),
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/* with index 31 LDO3 is in DDR mode */
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REGULATOR_LINEAR_RANGE(500000, 31, 31, 0),
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};
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static const struct linear_range ldo5_ranges[] = {
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REGULATOR_LINEAR_RANGE(1700000, 0, 7, 0),
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REGULATOR_LINEAR_RANGE(1700000, 8, 30, 100000),
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REGULATOR_LINEAR_RANGE(3900000, 31, 31, 0),
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};
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static const struct linear_range ldo6_ranges[] = {
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REGULATOR_LINEAR_RANGE(900000, 0, 24, 100000),
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REGULATOR_LINEAR_RANGE(3300000, 25, 31, 0),
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};
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static const struct regulator_ops stpmic1_ldo_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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.is_enabled = regulator_is_enabled_regmap,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.set_over_current_protection = stpmic1_set_icc,
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};
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static const struct regulator_ops stpmic1_ldo3_ops = {
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.list_voltage = regulator_list_voltage_linear_range,
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.map_voltage = regulator_map_voltage_iterate,
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.is_enabled = regulator_is_enabled_regmap,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.get_bypass = regulator_get_bypass_regmap,
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.set_bypass = regulator_set_bypass_regmap,
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.set_over_current_protection = stpmic1_set_icc,
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};
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static const struct regulator_ops stpmic1_ldo4_fixed_regul_ops = {
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.is_enabled = regulator_is_enabled_regmap,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.set_over_current_protection = stpmic1_set_icc,
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};
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static const struct regulator_ops stpmic1_buck_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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.is_enabled = regulator_is_enabled_regmap,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.set_pull_down = regulator_set_pull_down_regmap,
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.set_mode = stpmic1_set_mode,
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.get_mode = stpmic1_get_mode,
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.set_over_current_protection = stpmic1_set_icc,
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};
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static const struct regulator_ops stpmic1_vref_ddr_ops = {
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.is_enabled = regulator_is_enabled_regmap,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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};
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static const struct regulator_ops stpmic1_boost_regul_ops = {
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.is_enabled = regulator_is_enabled_regmap,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.set_over_current_protection = stpmic1_set_icc,
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};
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static const struct regulator_ops stpmic1_switch_regul_ops = {
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.is_enabled = regulator_is_enabled_regmap,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.set_over_current_protection = stpmic1_set_icc,
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.set_active_discharge = regulator_set_active_discharge_regmap,
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};
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#define REG_LDO(ids, base) { \
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.name = #ids, \
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.id = STPMIC1_##ids, \
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.n_voltages = 32, \
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.ops = &stpmic1_ldo_ops, \
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.linear_ranges = base ## _ranges, \
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.n_linear_ranges = ARRAY_SIZE(base ## _ranges), \
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.type = REGULATOR_VOLTAGE, \
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.owner = THIS_MODULE, \
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.vsel_reg = ids##_ACTIVE_CR, \
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.vsel_mask = LDO_VOLTAGE_MASK, \
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.enable_reg = ids##_ACTIVE_CR, \
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.enable_mask = LDO_ENABLE_MASK, \
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.enable_val = 1, \
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.disable_val = 0, \
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.enable_time = PMIC_ENABLE_TIME_US, \
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.ramp_delay = PMIC_RAMP_DELAY, \
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.supply_name = #base, \
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}
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#define REG_LDO3(ids, base) { \
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.name = #ids, \
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.id = STPMIC1_##ids, \
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.n_voltages = 32, \
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.ops = &stpmic1_ldo3_ops, \
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.linear_ranges = ldo3_ranges, \
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.n_linear_ranges = ARRAY_SIZE(ldo3_ranges), \
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.type = REGULATOR_VOLTAGE, \
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.owner = THIS_MODULE, \
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.vsel_reg = LDO3_ACTIVE_CR, \
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.vsel_mask = LDO_VOLTAGE_MASK, \
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.enable_reg = LDO3_ACTIVE_CR, \
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.enable_mask = LDO_ENABLE_MASK, \
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.enable_val = 1, \
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.disable_val = 0, \
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.enable_time = PMIC_ENABLE_TIME_US, \
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.ramp_delay = PMIC_RAMP_DELAY, \
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.bypass_reg = LDO3_ACTIVE_CR, \
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.bypass_mask = LDO_BYPASS_MASK, \
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.bypass_val_on = LDO_BYPASS_MASK, \
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.bypass_val_off = 0, \
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.supply_name = #base, \
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}
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#define REG_LDO4(ids, base) { \
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.name = #ids, \
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.id = STPMIC1_##ids, \
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.n_voltages = 1, \
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.ops = &stpmic1_ldo4_fixed_regul_ops, \
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.type = REGULATOR_VOLTAGE, \
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.owner = THIS_MODULE, \
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.min_uV = 3300000, \
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.fixed_uV = 3300000, \
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.enable_reg = LDO4_ACTIVE_CR, \
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.enable_mask = LDO_ENABLE_MASK, \
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.enable_val = 1, \
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.disable_val = 0, \
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.enable_time = PMIC_ENABLE_TIME_US, \
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.ramp_delay = PMIC_RAMP_DELAY, \
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.supply_name = #base, \
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}
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#define REG_BUCK(ids, base) { \
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.name = #ids, \
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.id = STPMIC1_##ids, \
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.ops = &stpmic1_buck_ops, \
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.n_voltages = 64, \
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.linear_ranges = base ## _ranges, \
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.n_linear_ranges = ARRAY_SIZE(base ## _ranges), \
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.type = REGULATOR_VOLTAGE, \
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.owner = THIS_MODULE, \
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.vsel_reg = ids##_ACTIVE_CR, \
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.vsel_mask = BUCK_VOLTAGE_MASK, \
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.enable_reg = ids##_ACTIVE_CR, \
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.enable_mask = BUCK_ENABLE_MASK, \
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.enable_val = 1, \
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.disable_val = 0, \
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.enable_time = PMIC_ENABLE_TIME_US, \
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.ramp_delay = PMIC_RAMP_DELAY, \
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.of_map_mode = stpmic1_map_mode, \
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.pull_down_reg = ids##_PULL_DOWN_REG, \
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.pull_down_mask = ids##_PULL_DOWN_MASK, \
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.supply_name = #base, \
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}
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#define REG_VREF_DDR(ids, base) { \
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.name = #ids, \
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.id = STPMIC1_##ids, \
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.n_voltages = 1, \
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.ops = &stpmic1_vref_ddr_ops, \
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.type = REGULATOR_VOLTAGE, \
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.owner = THIS_MODULE, \
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.min_uV = 500000, \
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.fixed_uV = 500000, \
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.enable_reg = VREF_DDR_ACTIVE_CR, \
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.enable_mask = BUCK_ENABLE_MASK, \
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.enable_val = 1, \
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.disable_val = 0, \
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.enable_time = PMIC_ENABLE_TIME_US, \
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.supply_name = #base, \
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}
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#define REG_BOOST(ids, base) { \
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.name = #ids, \
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.id = STPMIC1_##ids, \
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.n_voltages = 1, \
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.ops = &stpmic1_boost_regul_ops, \
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.type = REGULATOR_VOLTAGE, \
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.owner = THIS_MODULE, \
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.min_uV = 0, \
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.fixed_uV = 5000000, \
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.enable_reg = BST_SW_CR, \
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.enable_mask = BOOST_ENABLED, \
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.enable_val = BOOST_ENABLED, \
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.disable_val = 0, \
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.enable_time = PMIC_ENABLE_TIME_US, \
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.supply_name = #base, \
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}
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#define REG_VBUS_OTG(ids, base) { \
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.name = #ids, \
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.id = STPMIC1_##ids, \
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.n_voltages = 1, \
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.ops = &stpmic1_switch_regul_ops, \
|
||
|
|
.type = REGULATOR_VOLTAGE, \
|
||
|
|
.owner = THIS_MODULE, \
|
||
|
|
.min_uV = 0, \
|
||
|
|
.fixed_uV = 5000000, \
|
||
|
|
.enable_reg = BST_SW_CR, \
|
||
|
|
.enable_mask = USBSW_OTG_SWITCH_ENABLED, \
|
||
|
|
.enable_val = USBSW_OTG_SWITCH_ENABLED, \
|
||
|
|
.disable_val = 0, \
|
||
|
|
.enable_time = PMIC_ENABLE_TIME_US, \
|
||
|
|
.supply_name = #base, \
|
||
|
|
.active_discharge_reg = BST_SW_CR, \
|
||
|
|
.active_discharge_mask = VBUS_OTG_DISCHARGE, \
|
||
|
|
.active_discharge_on = VBUS_OTG_DISCHARGE, \
|
||
|
|
}
|
||
|
|
|
||
|
|
#define REG_SW_OUT(ids, base) { \
|
||
|
|
.name = #ids, \
|
||
|
|
.id = STPMIC1_##ids, \
|
||
|
|
.n_voltages = 1, \
|
||
|
|
.ops = &stpmic1_switch_regul_ops, \
|
||
|
|
.type = REGULATOR_VOLTAGE, \
|
||
|
|
.owner = THIS_MODULE, \
|
||
|
|
.min_uV = 0, \
|
||
|
|
.fixed_uV = 5000000, \
|
||
|
|
.enable_reg = BST_SW_CR, \
|
||
|
|
.enable_mask = SWIN_SWOUT_ENABLED, \
|
||
|
|
.enable_val = SWIN_SWOUT_ENABLED, \
|
||
|
|
.disable_val = 0, \
|
||
|
|
.enable_time = PMIC_ENABLE_TIME_US, \
|
||
|
|
.supply_name = #base, \
|
||
|
|
.active_discharge_reg = BST_SW_CR, \
|
||
|
|
.active_discharge_mask = SW_OUT_DISCHARGE, \
|
||
|
|
.active_discharge_on = SW_OUT_DISCHARGE, \
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct stpmic1_regulator_cfg stpmic1_regulator_cfgs[] = {
|
||
|
|
[STPMIC1_BUCK1] = {
|
||
|
|
.desc = REG_BUCK(BUCK1, buck1),
|
||
|
|
.icc_reg = BUCKS_ICCTO_CR,
|
||
|
|
.icc_mask = BIT(0),
|
||
|
|
.mask_reset_reg = BUCKS_MASK_RESET_CR,
|
||
|
|
.mask_reset_mask = BIT(0),
|
||
|
|
},
|
||
|
|
[STPMIC1_BUCK2] = {
|
||
|
|
.desc = REG_BUCK(BUCK2, buck2),
|
||
|
|
.icc_reg = BUCKS_ICCTO_CR,
|
||
|
|
.icc_mask = BIT(1),
|
||
|
|
.mask_reset_reg = BUCKS_MASK_RESET_CR,
|
||
|
|
.mask_reset_mask = BIT(1),
|
||
|
|
},
|
||
|
|
[STPMIC1_BUCK3] = {
|
||
|
|
.desc = REG_BUCK(BUCK3, buck3),
|
||
|
|
.icc_reg = BUCKS_ICCTO_CR,
|
||
|
|
.icc_mask = BIT(2),
|
||
|
|
.mask_reset_reg = BUCKS_MASK_RESET_CR,
|
||
|
|
.mask_reset_mask = BIT(2),
|
||
|
|
},
|
||
|
|
[STPMIC1_BUCK4] = {
|
||
|
|
.desc = REG_BUCK(BUCK4, buck4),
|
||
|
|
.icc_reg = BUCKS_ICCTO_CR,
|
||
|
|
.icc_mask = BIT(3),
|
||
|
|
.mask_reset_reg = BUCKS_MASK_RESET_CR,
|
||
|
|
.mask_reset_mask = BIT(3),
|
||
|
|
},
|
||
|
|
[STPMIC1_LDO1] = {
|
||
|
|
.desc = REG_LDO(LDO1, ldo1),
|
||
|
|
.icc_reg = LDOS_ICCTO_CR,
|
||
|
|
.icc_mask = BIT(0),
|
||
|
|
.mask_reset_reg = LDOS_MASK_RESET_CR,
|
||
|
|
.mask_reset_mask = BIT(0),
|
||
|
|
},
|
||
|
|
[STPMIC1_LDO2] = {
|
||
|
|
.desc = REG_LDO(LDO2, ldo2),
|
||
|
|
.icc_reg = LDOS_ICCTO_CR,
|
||
|
|
.icc_mask = BIT(1),
|
||
|
|
.mask_reset_reg = LDOS_MASK_RESET_CR,
|
||
|
|
.mask_reset_mask = BIT(1),
|
||
|
|
},
|
||
|
|
[STPMIC1_LDO3] = {
|
||
|
|
.desc = REG_LDO3(LDO3, ldo3),
|
||
|
|
.icc_reg = LDOS_ICCTO_CR,
|
||
|
|
.icc_mask = BIT(2),
|
||
|
|
.mask_reset_reg = LDOS_MASK_RESET_CR,
|
||
|
|
.mask_reset_mask = BIT(2),
|
||
|
|
},
|
||
|
|
[STPMIC1_LDO4] = {
|
||
|
|
.desc = REG_LDO4(LDO4, ldo4),
|
||
|
|
.icc_reg = LDOS_ICCTO_CR,
|
||
|
|
.icc_mask = BIT(3),
|
||
|
|
.mask_reset_reg = LDOS_MASK_RESET_CR,
|
||
|
|
.mask_reset_mask = BIT(3),
|
||
|
|
},
|
||
|
|
[STPMIC1_LDO5] = {
|
||
|
|
.desc = REG_LDO(LDO5, ldo5),
|
||
|
|
.icc_reg = LDOS_ICCTO_CR,
|
||
|
|
.icc_mask = BIT(4),
|
||
|
|
.mask_reset_reg = LDOS_MASK_RESET_CR,
|
||
|
|
.mask_reset_mask = BIT(4),
|
||
|
|
},
|
||
|
|
[STPMIC1_LDO6] = {
|
||
|
|
.desc = REG_LDO(LDO6, ldo6),
|
||
|
|
.icc_reg = LDOS_ICCTO_CR,
|
||
|
|
.icc_mask = BIT(5),
|
||
|
|
.mask_reset_reg = LDOS_MASK_RESET_CR,
|
||
|
|
.mask_reset_mask = BIT(5),
|
||
|
|
},
|
||
|
|
[STPMIC1_VREF_DDR] = {
|
||
|
|
.desc = REG_VREF_DDR(VREF_DDR, vref_ddr),
|
||
|
|
.mask_reset_reg = LDOS_MASK_RESET_CR,
|
||
|
|
.mask_reset_mask = BIT(6),
|
||
|
|
},
|
||
|
|
[STPMIC1_BOOST] = {
|
||
|
|
.desc = REG_BOOST(BOOST, boost),
|
||
|
|
.icc_reg = BUCKS_ICCTO_CR,
|
||
|
|
.icc_mask = BIT(6),
|
||
|
|
},
|
||
|
|
[STPMIC1_VBUS_OTG] = {
|
||
|
|
.desc = REG_VBUS_OTG(VBUS_OTG, pwr_sw1),
|
||
|
|
.icc_reg = BUCKS_ICCTO_CR,
|
||
|
|
.icc_mask = BIT(4),
|
||
|
|
},
|
||
|
|
[STPMIC1_SW_OUT] = {
|
||
|
|
.desc = REG_SW_OUT(SW_OUT, pwr_sw2),
|
||
|
|
.icc_reg = BUCKS_ICCTO_CR,
|
||
|
|
.icc_mask = BIT(5),
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
static unsigned int stpmic1_map_mode(unsigned int mode)
|
||
|
|
{
|
||
|
|
switch (mode) {
|
||
|
|
case STPMIC1_BUCK_MODE_NORMAL:
|
||
|
|
return REGULATOR_MODE_NORMAL;
|
||
|
|
case STPMIC1_BUCK_MODE_LP:
|
||
|
|
return REGULATOR_MODE_STANDBY;
|
||
|
|
default:
|
||
|
|
return REGULATOR_MODE_INVALID;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static unsigned int stpmic1_get_mode(struct regulator_dev *rdev)
|
||
|
|
{
|
||
|
|
int value;
|
||
|
|
struct regmap *regmap = rdev_get_regmap(rdev);
|
||
|
|
|
||
|
|
regmap_read(regmap, rdev->desc->enable_reg, &value);
|
||
|
|
|
||
|
|
if (value & STPMIC1_BUCK_MODE_LP)
|
||
|
|
return REGULATOR_MODE_STANDBY;
|
||
|
|
|
||
|
|
return REGULATOR_MODE_NORMAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int stpmic1_set_mode(struct regulator_dev *rdev, unsigned int mode)
|
||
|
|
{
|
||
|
|
int value;
|
||
|
|
struct regmap *regmap = rdev_get_regmap(rdev);
|
||
|
|
|
||
|
|
switch (mode) {
|
||
|
|
case REGULATOR_MODE_NORMAL:
|
||
|
|
value = STPMIC1_BUCK_MODE_NORMAL;
|
||
|
|
break;
|
||
|
|
case REGULATOR_MODE_STANDBY:
|
||
|
|
value = STPMIC1_BUCK_MODE_LP;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
return regmap_update_bits(regmap, rdev->desc->enable_reg,
|
||
|
|
STPMIC1_BUCK_MODE_LP, value);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int stpmic1_set_icc(struct regulator_dev *rdev, int lim, int severity,
|
||
|
|
bool enable)
|
||
|
|
{
|
||
|
|
struct stpmic1_regulator_cfg *cfg = rdev_get_drvdata(rdev);
|
||
|
|
struct regmap *regmap = rdev_get_regmap(rdev);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The code seems like one bit in a register controls whether OCP is
|
||
|
|
* enabled. So we might be able to turn it off here is if that
|
||
|
|
* was requested. I won't support this because I don't have the HW.
|
||
|
|
* Feel free to try and implement if you have the HW and need kernel
|
||
|
|
* to disable this.
|
||
|
|
*
|
||
|
|
* Also, I don't know if limit can be configured or if we support
|
||
|
|
* error/warning instead of protect. So I just keep existing logic
|
||
|
|
* and assume no.
|
||
|
|
*/
|
||
|
|
if (lim || severity != REGULATOR_SEVERITY_PROT || !enable)
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
/* enable switch off in case of over current */
|
||
|
|
return regmap_update_bits(regmap, cfg->icc_reg, cfg->icc_mask,
|
||
|
|
cfg->icc_mask);
|
||
|
|
}
|
||
|
|
|
||
|
|
static irqreturn_t stpmic1_curlim_irq_handler(int irq, void *data)
|
||
|
|
{
|
||
|
|
struct regulator_dev *rdev = (struct regulator_dev *)data;
|
||
|
|
|
||
|
|
/* Send an overcurrent notification */
|
||
|
|
regulator_notifier_call_chain(rdev,
|
||
|
|
REGULATOR_EVENT_OVER_CURRENT,
|
||
|
|
NULL);
|
||
|
|
|
||
|
|
return IRQ_HANDLED;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define MATCH(_name, _id) \
|
||
|
|
[STPMIC1_##_id] = { \
|
||
|
|
.name = #_name, \
|
||
|
|
.desc = &stpmic1_regulator_cfgs[STPMIC1_##_id].desc, \
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct of_regulator_match stpmic1_matches[] = {
|
||
|
|
MATCH(buck1, BUCK1),
|
||
|
|
MATCH(buck2, BUCK2),
|
||
|
|
MATCH(buck3, BUCK3),
|
||
|
|
MATCH(buck4, BUCK4),
|
||
|
|
MATCH(ldo1, LDO1),
|
||
|
|
MATCH(ldo2, LDO2),
|
||
|
|
MATCH(ldo3, LDO3),
|
||
|
|
MATCH(ldo4, LDO4),
|
||
|
|
MATCH(ldo5, LDO5),
|
||
|
|
MATCH(ldo6, LDO6),
|
||
|
|
MATCH(vref_ddr, VREF_DDR),
|
||
|
|
MATCH(boost, BOOST),
|
||
|
|
MATCH(pwr_sw1, VBUS_OTG),
|
||
|
|
MATCH(pwr_sw2, SW_OUT),
|
||
|
|
};
|
||
|
|
|
||
|
|
static int stpmic1_regulator_register(struct platform_device *pdev, int id,
|
||
|
|
struct of_regulator_match *match,
|
||
|
|
const struct stpmic1_regulator_cfg *cfg)
|
||
|
|
{
|
||
|
|
struct stpmic1 *pmic_dev = dev_get_drvdata(pdev->dev.parent);
|
||
|
|
struct regulator_dev *rdev;
|
||
|
|
struct regulator_config config = {};
|
||
|
|
int ret = 0;
|
||
|
|
int irq;
|
||
|
|
|
||
|
|
config.dev = &pdev->dev;
|
||
|
|
config.init_data = match->init_data;
|
||
|
|
config.of_node = match->of_node;
|
||
|
|
config.regmap = pmic_dev->regmap;
|
||
|
|
config.driver_data = (void *)cfg;
|
||
|
|
|
||
|
|
rdev = devm_regulator_register(&pdev->dev, &cfg->desc, &config);
|
||
|
|
if (IS_ERR(rdev)) {
|
||
|
|
dev_err(&pdev->dev, "failed to register %s regulator\n",
|
||
|
|
cfg->desc.name);
|
||
|
|
return PTR_ERR(rdev);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* set mask reset */
|
||
|
|
if (of_get_property(config.of_node, "st,mask-reset", NULL) &&
|
||
|
|
cfg->mask_reset_reg != 0) {
|
||
|
|
ret = regmap_update_bits(pmic_dev->regmap,
|
||
|
|
cfg->mask_reset_reg,
|
||
|
|
cfg->mask_reset_mask,
|
||
|
|
cfg->mask_reset_mask);
|
||
|
|
if (ret) {
|
||
|
|
dev_err(&pdev->dev, "set mask reset failed\n");
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* setup an irq handler for over-current detection */
|
||
|
|
irq = of_irq_get(config.of_node, 0);
|
||
|
|
if (irq > 0) {
|
||
|
|
ret = devm_request_threaded_irq(&pdev->dev,
|
||
|
|
irq, NULL,
|
||
|
|
stpmic1_curlim_irq_handler,
|
||
|
|
IRQF_ONESHOT | IRQF_SHARED,
|
||
|
|
pdev->name, rdev);
|
||
|
|
if (ret) {
|
||
|
|
dev_err(&pdev->dev, "Request IRQ failed\n");
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int stpmic1_regulator_probe(struct platform_device *pdev)
|
||
|
|
{
|
||
|
|
int i, ret;
|
||
|
|
|
||
|
|
ret = of_regulator_match(&pdev->dev, pdev->dev.of_node, stpmic1_matches,
|
||
|
|
ARRAY_SIZE(stpmic1_matches));
|
||
|
|
if (ret < 0) {
|
||
|
|
dev_err(&pdev->dev,
|
||
|
|
"Error in PMIC regulator device tree node");
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (i = 0; i < ARRAY_SIZE(stpmic1_regulator_cfgs); i++) {
|
||
|
|
ret = stpmic1_regulator_register(pdev, i, &stpmic1_matches[i],
|
||
|
|
&stpmic1_regulator_cfgs[i]);
|
||
|
|
if (ret < 0)
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
dev_dbg(&pdev->dev, "stpmic1_regulator driver probed\n");
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct of_device_id of_pmic_regulator_match[] = {
|
||
|
|
{ .compatible = "st,stpmic1-regulators" },
|
||
|
|
{ },
|
||
|
|
};
|
||
|
|
|
||
|
|
MODULE_DEVICE_TABLE(of, of_pmic_regulator_match);
|
||
|
|
|
||
|
|
static struct platform_driver stpmic1_regulator_driver = {
|
||
|
|
.driver = {
|
||
|
|
.name = "stpmic1-regulator",
|
||
|
|
.of_match_table = of_match_ptr(of_pmic_regulator_match),
|
||
|
|
},
|
||
|
|
.probe = stpmic1_regulator_probe,
|
||
|
|
};
|
||
|
|
|
||
|
|
module_platform_driver(stpmic1_regulator_driver);
|
||
|
|
|
||
|
|
MODULE_DESCRIPTION("STPMIC1 PMIC voltage regulator driver");
|
||
|
|
MODULE_AUTHOR("Pascal Paillet <p.paillet@st.com>");
|
||
|
|
MODULE_LICENSE("GPL v2");
|