661 lines
22 KiB
C
661 lines
22 KiB
C
/*
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* AXP20x regulators driver.
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*
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* Copyright (C) 2013 Carlo Caione <carlo@caione.org>
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*
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* This file is subject to the terms and conditions of the GNU General
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* Public License. See the file "COPYING" in the main directory of this
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* archive for more details.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/err.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <linux/mfd/axp20x.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/of_regulator.h>
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#define AXP20X_IO_ENABLED 0x03
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#define AXP20X_IO_DISABLED 0x07
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#define AXP22X_IO_ENABLED 0x03
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#define AXP22X_IO_DISABLED 0x04
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#define AXP20X_WORKMODE_DCDC2_MASK BIT(2)
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#define AXP20X_WORKMODE_DCDC3_MASK BIT(1)
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#define AXP22X_WORKMODE_DCDCX_MASK(x) BIT(x)
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#define AXP20X_FREQ_DCDC_MASK 0x0f
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#define AXP22X_MISC_N_VBUSEN_FUNC BIT(4)
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#define AXP_DESC_IO(_family, _id, _match, _supply, _min, _max, _step, _vreg, \
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_vmask, _ereg, _emask, _enable_val, _disable_val) \
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[_family##_##_id] = { \
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.name = (_match), \
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.supply_name = (_supply), \
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.of_match = of_match_ptr(_match), \
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.regulators_node = of_match_ptr("regulators"), \
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.type = REGULATOR_VOLTAGE, \
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.id = _family##_##_id, \
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.n_voltages = (((_max) - (_min)) / (_step) + 1), \
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.owner = THIS_MODULE, \
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.min_uV = (_min) * 1000, \
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.uV_step = (_step) * 1000, \
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.vsel_reg = (_vreg), \
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.vsel_mask = (_vmask), \
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.enable_reg = (_ereg), \
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.enable_mask = (_emask), \
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.enable_val = (_enable_val), \
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.disable_val = (_disable_val), \
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.ops = &axp20x_ops, \
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}
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#define AXP_DESC(_family, _id, _match, _supply, _min, _max, _step, _vreg, \
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_vmask, _ereg, _emask) \
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[_family##_##_id] = { \
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.name = (_match), \
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.supply_name = (_supply), \
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.of_match = of_match_ptr(_match), \
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.regulators_node = of_match_ptr("regulators"), \
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.type = REGULATOR_VOLTAGE, \
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.id = _family##_##_id, \
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.n_voltages = (((_max) - (_min)) / (_step) + 1), \
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.owner = THIS_MODULE, \
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.min_uV = (_min) * 1000, \
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.uV_step = (_step) * 1000, \
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.vsel_reg = (_vreg), \
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.vsel_mask = (_vmask), \
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.enable_reg = (_ereg), \
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.enable_mask = (_emask), \
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.ops = &axp20x_ops, \
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}
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#define AXP_DESC_SW(_family, _id, _match, _supply, _ereg, _emask) \
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[_family##_##_id] = { \
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.name = (_match), \
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.supply_name = (_supply), \
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.of_match = of_match_ptr(_match), \
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.regulators_node = of_match_ptr("regulators"), \
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.type = REGULATOR_VOLTAGE, \
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.id = _family##_##_id, \
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.owner = THIS_MODULE, \
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.enable_reg = (_ereg), \
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.enable_mask = (_emask), \
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.ops = &axp20x_ops_sw, \
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}
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#define AXP_DESC_FIXED(_family, _id, _match, _supply, _volt) \
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[_family##_##_id] = { \
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.name = (_match), \
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.supply_name = (_supply), \
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.of_match = of_match_ptr(_match), \
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.regulators_node = of_match_ptr("regulators"), \
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.type = REGULATOR_VOLTAGE, \
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.id = _family##_##_id, \
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.n_voltages = 1, \
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.owner = THIS_MODULE, \
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.min_uV = (_volt) * 1000, \
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.ops = &axp20x_ops_fixed \
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}
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#define AXP_DESC_RANGES(_family, _id, _match, _supply, _ranges, _n_voltages, \
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_vreg, _vmask, _ereg, _emask) \
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[_family##_##_id] = { \
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.name = (_match), \
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.supply_name = (_supply), \
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.of_match = of_match_ptr(_match), \
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.regulators_node = of_match_ptr("regulators"), \
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.type = REGULATOR_VOLTAGE, \
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.id = _family##_##_id, \
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.n_voltages = (_n_voltages), \
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.owner = THIS_MODULE, \
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.vsel_reg = (_vreg), \
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.vsel_mask = (_vmask), \
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.enable_reg = (_ereg), \
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.enable_mask = (_emask), \
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.linear_ranges = (_ranges), \
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.n_linear_ranges = ARRAY_SIZE(_ranges), \
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.ops = &axp20x_ops_range, \
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}
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static const struct regulator_ops axp20x_ops_fixed = {
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.list_voltage = regulator_list_voltage_linear,
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};
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static const struct regulator_ops axp20x_ops_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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.list_voltage = regulator_list_voltage_linear_range,
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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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};
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static const struct regulator_ops axp20x_ops = {
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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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.list_voltage = regulator_list_voltage_linear,
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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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};
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static const struct regulator_ops axp20x_ops_sw = {
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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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};
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static const struct regulator_linear_range axp20x_ldo4_ranges[] = {
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REGULATOR_LINEAR_RANGE(1250000, 0x0, 0x0, 0),
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REGULATOR_LINEAR_RANGE(1300000, 0x1, 0x8, 100000),
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REGULATOR_LINEAR_RANGE(2500000, 0x9, 0x9, 0),
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REGULATOR_LINEAR_RANGE(2700000, 0xa, 0xb, 100000),
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REGULATOR_LINEAR_RANGE(3000000, 0xc, 0xf, 100000),
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};
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static const struct regulator_desc axp20x_regulators[] = {
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AXP_DESC(AXP20X, DCDC2, "dcdc2", "vin2", 700, 2275, 25,
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AXP20X_DCDC2_V_OUT, 0x3f, AXP20X_PWR_OUT_CTRL, 0x10),
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AXP_DESC(AXP20X, DCDC3, "dcdc3", "vin3", 700, 3500, 25,
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AXP20X_DCDC3_V_OUT, 0x7f, AXP20X_PWR_OUT_CTRL, 0x02),
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AXP_DESC_FIXED(AXP20X, LDO1, "ldo1", "acin", 1300),
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AXP_DESC(AXP20X, LDO2, "ldo2", "ldo24in", 1800, 3300, 100,
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AXP20X_LDO24_V_OUT, 0xf0, AXP20X_PWR_OUT_CTRL, 0x04),
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AXP_DESC(AXP20X, LDO3, "ldo3", "ldo3in", 700, 3500, 25,
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AXP20X_LDO3_V_OUT, 0x7f, AXP20X_PWR_OUT_CTRL, 0x40),
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AXP_DESC_RANGES(AXP20X, LDO4, "ldo4", "ldo24in", axp20x_ldo4_ranges,
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16, AXP20X_LDO24_V_OUT, 0x0f, AXP20X_PWR_OUT_CTRL,
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0x08),
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AXP_DESC_IO(AXP20X, LDO5, "ldo5", "ldo5in", 1800, 3300, 100,
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AXP20X_LDO5_V_OUT, 0xf0, AXP20X_GPIO0_CTRL, 0x07,
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AXP20X_IO_ENABLED, AXP20X_IO_DISABLED),
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};
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static const struct regulator_desc axp22x_regulators[] = {
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AXP_DESC(AXP22X, DCDC1, "dcdc1", "vin1", 1600, 3400, 100,
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AXP22X_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(1)),
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AXP_DESC(AXP22X, DCDC2, "dcdc2", "vin2", 600, 1540, 20,
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AXP22X_DCDC2_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(2)),
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AXP_DESC(AXP22X, DCDC3, "dcdc3", "vin3", 600, 1860, 20,
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AXP22X_DCDC3_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(3)),
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AXP_DESC(AXP22X, DCDC4, "dcdc4", "vin4", 600, 1540, 20,
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AXP22X_DCDC4_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(4)),
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AXP_DESC(AXP22X, DCDC5, "dcdc5", "vin5", 1000, 2550, 50,
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AXP22X_DCDC5_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(5)),
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/* secondary switchable output of DCDC1 */
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AXP_DESC_SW(AXP22X, DC1SW, "dc1sw", NULL, AXP22X_PWR_OUT_CTRL2,
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BIT(7)),
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/* LDO regulator internally chained to DCDC5 */
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AXP_DESC(AXP22X, DC5LDO, "dc5ldo", NULL, 700, 1400, 100,
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AXP22X_DC5LDO_V_OUT, 0x7, AXP22X_PWR_OUT_CTRL1, BIT(0)),
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AXP_DESC(AXP22X, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
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AXP22X_ALDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(6)),
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AXP_DESC(AXP22X, ALDO2, "aldo2", "aldoin", 700, 3300, 100,
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AXP22X_ALDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(7)),
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AXP_DESC(AXP22X, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
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AXP22X_ALDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(7)),
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AXP_DESC(AXP22X, DLDO1, "dldo1", "dldoin", 700, 3300, 100,
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AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(3)),
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AXP_DESC(AXP22X, DLDO2, "dldo2", "dldoin", 700, 3300, 100,
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AXP22X_DLDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(4)),
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AXP_DESC(AXP22X, DLDO3, "dldo3", "dldoin", 700, 3300, 100,
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AXP22X_DLDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(5)),
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AXP_DESC(AXP22X, DLDO4, "dldo4", "dldoin", 700, 3300, 100,
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AXP22X_DLDO4_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(6)),
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AXP_DESC(AXP22X, ELDO1, "eldo1", "eldoin", 700, 3300, 100,
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AXP22X_ELDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(0)),
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AXP_DESC(AXP22X, ELDO2, "eldo2", "eldoin", 700, 3300, 100,
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AXP22X_ELDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(1)),
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AXP_DESC(AXP22X, ELDO3, "eldo3", "eldoin", 700, 3300, 100,
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AXP22X_ELDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(2)),
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/* Note the datasheet only guarantees reliable operation up to
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* 3.3V, this needs to be enforced via dts provided constraints */
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AXP_DESC_IO(AXP22X, LDO_IO0, "ldo_io0", "ips", 700, 3800, 100,
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AXP22X_LDO_IO0_V_OUT, 0x1f, AXP20X_GPIO0_CTRL, 0x07,
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AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
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/* Note the datasheet only guarantees reliable operation up to
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* 3.3V, this needs to be enforced via dts provided constraints */
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AXP_DESC_IO(AXP22X, LDO_IO1, "ldo_io1", "ips", 700, 3800, 100,
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AXP22X_LDO_IO1_V_OUT, 0x1f, AXP20X_GPIO1_CTRL, 0x07,
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AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
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AXP_DESC_FIXED(AXP22X, RTC_LDO, "rtc_ldo", "ips", 3000),
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};
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static const struct regulator_desc axp22x_drivevbus_regulator = {
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.name = "drivevbus",
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.supply_name = "drivevbus",
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.of_match = of_match_ptr("drivevbus"),
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.regulators_node = of_match_ptr("regulators"),
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.enable_reg = AXP20X_VBUS_IPSOUT_MGMT,
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.enable_mask = BIT(2),
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.ops = &axp20x_ops_sw,
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};
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static const struct regulator_linear_range axp806_dcdca_ranges[] = {
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REGULATOR_LINEAR_RANGE(600000, 0x0, 0x32, 10000),
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REGULATOR_LINEAR_RANGE(1120000, 0x33, 0x47, 20000),
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};
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static const struct regulator_linear_range axp806_dcdcd_ranges[] = {
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REGULATOR_LINEAR_RANGE(600000, 0x0, 0x2d, 20000),
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REGULATOR_LINEAR_RANGE(1600000, 0x2e, 0x3f, 100000),
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};
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static const struct regulator_linear_range axp806_cldo2_ranges[] = {
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REGULATOR_LINEAR_RANGE(700000, 0x0, 0x1a, 100000),
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REGULATOR_LINEAR_RANGE(3400000, 0x1b, 0x1f, 200000),
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};
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static const struct regulator_desc axp806_regulators[] = {
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AXP_DESC_RANGES(AXP806, DCDCA, "dcdca", "vina", axp806_dcdca_ranges,
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72, AXP806_DCDCA_V_CTRL, 0x7f, AXP806_PWR_OUT_CTRL1,
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BIT(0)),
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AXP_DESC(AXP806, DCDCB, "dcdcb", "vinb", 1000, 2550, 50,
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AXP806_DCDCB_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(1)),
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AXP_DESC_RANGES(AXP806, DCDCC, "dcdcc", "vinc", axp806_dcdca_ranges,
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72, AXP806_DCDCC_V_CTRL, 0x7f, AXP806_PWR_OUT_CTRL1,
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BIT(2)),
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AXP_DESC_RANGES(AXP806, DCDCD, "dcdcd", "vind", axp806_dcdcd_ranges,
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64, AXP806_DCDCD_V_CTRL, 0x3f, AXP806_PWR_OUT_CTRL1,
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BIT(3)),
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AXP_DESC(AXP806, DCDCE, "dcdce", "vine", 1100, 3400, 100,
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AXP806_DCDCE_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(4)),
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AXP_DESC(AXP806, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
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AXP806_ALDO1_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(5)),
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AXP_DESC(AXP806, ALDO2, "aldo2", "aldoin", 700, 3400, 100,
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AXP806_ALDO2_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(6)),
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AXP_DESC(AXP806, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
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AXP806_ALDO3_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(7)),
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AXP_DESC(AXP806, BLDO1, "bldo1", "bldoin", 700, 1900, 100,
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AXP806_BLDO1_V_CTRL, 0x0f, AXP806_PWR_OUT_CTRL2, BIT(0)),
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AXP_DESC(AXP806, BLDO2, "bldo2", "bldoin", 700, 1900, 100,
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AXP806_BLDO2_V_CTRL, 0x0f, AXP806_PWR_OUT_CTRL2, BIT(1)),
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AXP_DESC(AXP806, BLDO3, "bldo3", "bldoin", 700, 1900, 100,
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AXP806_BLDO3_V_CTRL, 0x0f, AXP806_PWR_OUT_CTRL2, BIT(2)),
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AXP_DESC(AXP806, BLDO4, "bldo4", "bldoin", 700, 1900, 100,
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AXP806_BLDO4_V_CTRL, 0x0f, AXP806_PWR_OUT_CTRL2, BIT(3)),
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AXP_DESC(AXP806, CLDO1, "cldo1", "cldoin", 700, 3300, 100,
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AXP806_CLDO1_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL2, BIT(4)),
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AXP_DESC_RANGES(AXP806, CLDO2, "cldo2", "cldoin", axp806_cldo2_ranges,
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32, AXP806_CLDO2_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL2,
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BIT(5)),
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AXP_DESC(AXP806, CLDO3, "cldo3", "cldoin", 700, 3300, 100,
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AXP806_CLDO3_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL2, BIT(6)),
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AXP_DESC_SW(AXP806, SW, "sw", "swin", AXP806_PWR_OUT_CTRL2, BIT(7)),
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};
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static const struct regulator_linear_range axp809_dcdc4_ranges[] = {
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REGULATOR_LINEAR_RANGE(600000, 0x0, 0x2f, 20000),
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REGULATOR_LINEAR_RANGE(1800000, 0x30, 0x38, 100000),
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};
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static const struct regulator_desc axp809_regulators[] = {
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AXP_DESC(AXP809, DCDC1, "dcdc1", "vin1", 1600, 3400, 100,
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AXP22X_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(1)),
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AXP_DESC(AXP809, DCDC2, "dcdc2", "vin2", 600, 1540, 20,
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AXP22X_DCDC2_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(2)),
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AXP_DESC(AXP809, DCDC3, "dcdc3", "vin3", 600, 1860, 20,
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AXP22X_DCDC3_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(3)),
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AXP_DESC_RANGES(AXP809, DCDC4, "dcdc4", "vin4", axp809_dcdc4_ranges,
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57, AXP22X_DCDC4_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1,
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BIT(4)),
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AXP_DESC(AXP809, DCDC5, "dcdc5", "vin5", 1000, 2550, 50,
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AXP22X_DCDC5_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(5)),
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/* secondary switchable output of DCDC1 */
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AXP_DESC_SW(AXP809, DC1SW, "dc1sw", NULL, AXP22X_PWR_OUT_CTRL2,
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BIT(7)),
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/* LDO regulator internally chained to DCDC5 */
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AXP_DESC(AXP809, DC5LDO, "dc5ldo", NULL, 700, 1400, 100,
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AXP22X_DC5LDO_V_OUT, 0x7, AXP22X_PWR_OUT_CTRL1, BIT(0)),
|
|
AXP_DESC(AXP809, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
|
|
AXP22X_ALDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(6)),
|
|
AXP_DESC(AXP809, ALDO2, "aldo2", "aldoin", 700, 3300, 100,
|
|
AXP22X_ALDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(7)),
|
|
AXP_DESC(AXP809, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
|
|
AXP22X_ALDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(5)),
|
|
AXP_DESC_RANGES(AXP809, DLDO1, "dldo1", "dldoin", axp806_cldo2_ranges,
|
|
32, AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2,
|
|
BIT(3)),
|
|
AXP_DESC(AXP809, DLDO2, "dldo2", "dldoin", 700, 3300, 100,
|
|
AXP22X_DLDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(4)),
|
|
AXP_DESC(AXP809, ELDO1, "eldo1", "eldoin", 700, 3300, 100,
|
|
AXP22X_ELDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(0)),
|
|
AXP_DESC(AXP809, ELDO2, "eldo2", "eldoin", 700, 3300, 100,
|
|
AXP22X_ELDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(1)),
|
|
AXP_DESC(AXP809, ELDO3, "eldo3", "eldoin", 700, 3300, 100,
|
|
AXP22X_ELDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(2)),
|
|
/*
|
|
* Note the datasheet only guarantees reliable operation up to
|
|
* 3.3V, this needs to be enforced via dts provided constraints
|
|
*/
|
|
AXP_DESC_IO(AXP809, LDO_IO0, "ldo_io0", "ips", 700, 3800, 100,
|
|
AXP22X_LDO_IO0_V_OUT, 0x1f, AXP20X_GPIO0_CTRL, 0x07,
|
|
AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
|
|
/*
|
|
* Note the datasheet only guarantees reliable operation up to
|
|
* 3.3V, this needs to be enforced via dts provided constraints
|
|
*/
|
|
AXP_DESC_IO(AXP809, LDO_IO1, "ldo_io1", "ips", 700, 3800, 100,
|
|
AXP22X_LDO_IO1_V_OUT, 0x1f, AXP20X_GPIO1_CTRL, 0x07,
|
|
AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
|
|
AXP_DESC_FIXED(AXP809, RTC_LDO, "rtc_ldo", "ips", 1800),
|
|
AXP_DESC_SW(AXP809, SW, "sw", "swin", AXP22X_PWR_OUT_CTRL2, BIT(6)),
|
|
};
|
|
|
|
static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
|
|
{
|
|
struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
|
|
unsigned int reg = AXP20X_DCDC_FREQ;
|
|
u32 min, max, def, step;
|
|
|
|
switch (axp20x->variant) {
|
|
case AXP202_ID:
|
|
case AXP209_ID:
|
|
min = 750;
|
|
max = 1875;
|
|
def = 1500;
|
|
step = 75;
|
|
break;
|
|
case AXP806_ID:
|
|
/*
|
|
* AXP806 DCDC work frequency setting has the same range and
|
|
* step as AXP22X, but at a different register.
|
|
* Fall through to the check below.
|
|
* (See include/linux/mfd/axp20x.h)
|
|
*/
|
|
reg = AXP806_DCDC_FREQ_CTRL;
|
|
case AXP221_ID:
|
|
case AXP223_ID:
|
|
case AXP809_ID:
|
|
min = 1800;
|
|
max = 4050;
|
|
def = 3000;
|
|
step = 150;
|
|
break;
|
|
default:
|
|
dev_err(&pdev->dev,
|
|
"Setting DCDC frequency for unsupported AXP variant\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (dcdcfreq == 0)
|
|
dcdcfreq = def;
|
|
|
|
if (dcdcfreq < min) {
|
|
dcdcfreq = min;
|
|
dev_warn(&pdev->dev, "DCDC frequency too low. Set to %ukHz\n",
|
|
min);
|
|
}
|
|
|
|
if (dcdcfreq > max) {
|
|
dcdcfreq = max;
|
|
dev_warn(&pdev->dev, "DCDC frequency too high. Set to %ukHz\n",
|
|
max);
|
|
}
|
|
|
|
dcdcfreq = (dcdcfreq - min) / step;
|
|
|
|
return regmap_update_bits(axp20x->regmap, reg,
|
|
AXP20X_FREQ_DCDC_MASK, dcdcfreq);
|
|
}
|
|
|
|
static int axp20x_regulator_parse_dt(struct platform_device *pdev)
|
|
{
|
|
struct device_node *np, *regulators;
|
|
int ret;
|
|
u32 dcdcfreq = 0;
|
|
|
|
np = of_node_get(pdev->dev.parent->of_node);
|
|
if (!np)
|
|
return 0;
|
|
|
|
regulators = of_get_child_by_name(np, "regulators");
|
|
if (!regulators) {
|
|
dev_warn(&pdev->dev, "regulators node not found\n");
|
|
} else {
|
|
of_property_read_u32(regulators, "x-powers,dcdc-freq", &dcdcfreq);
|
|
ret = axp20x_set_dcdc_freq(pdev, dcdcfreq);
|
|
if (ret < 0) {
|
|
dev_err(&pdev->dev, "Error setting dcdc frequency: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
of_node_put(regulators);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int axp20x_set_dcdc_workmode(struct regulator_dev *rdev, int id, u32 workmode)
|
|
{
|
|
struct axp20x_dev *axp20x = rdev_get_drvdata(rdev);
|
|
unsigned int reg = AXP20X_DCDC_MODE;
|
|
unsigned int mask;
|
|
|
|
switch (axp20x->variant) {
|
|
case AXP202_ID:
|
|
case AXP209_ID:
|
|
if ((id != AXP20X_DCDC2) && (id != AXP20X_DCDC3))
|
|
return -EINVAL;
|
|
|
|
mask = AXP20X_WORKMODE_DCDC2_MASK;
|
|
if (id == AXP20X_DCDC3)
|
|
mask = AXP20X_WORKMODE_DCDC3_MASK;
|
|
|
|
workmode <<= ffs(mask) - 1;
|
|
break;
|
|
|
|
case AXP806_ID:
|
|
reg = AXP806_DCDC_MODE_CTRL2;
|
|
/*
|
|
* AXP806 DCDC regulator IDs have the same range as AXP22X.
|
|
* Fall through to the check below.
|
|
* (See include/linux/mfd/axp20x.h)
|
|
*/
|
|
case AXP221_ID:
|
|
case AXP223_ID:
|
|
case AXP809_ID:
|
|
if (id < AXP22X_DCDC1 || id > AXP22X_DCDC5)
|
|
return -EINVAL;
|
|
|
|
mask = AXP22X_WORKMODE_DCDCX_MASK(id - AXP22X_DCDC1);
|
|
workmode <<= id - AXP22X_DCDC1;
|
|
break;
|
|
|
|
default:
|
|
/* should not happen */
|
|
WARN_ON(1);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return regmap_update_bits(rdev->regmap, reg, mask, workmode);
|
|
}
|
|
|
|
/*
|
|
* This function checks whether a regulator is part of a poly-phase
|
|
* output setup based on the registers settings. Returns true if it is.
|
|
*/
|
|
static bool axp20x_is_polyphase_slave(struct axp20x_dev *axp20x, int id)
|
|
{
|
|
u32 reg = 0;
|
|
|
|
/* Only AXP806 has poly-phase outputs */
|
|
if (axp20x->variant != AXP806_ID)
|
|
return false;
|
|
|
|
regmap_read(axp20x->regmap, AXP806_DCDC_MODE_CTRL2, ®);
|
|
|
|
switch (id) {
|
|
case AXP806_DCDCB:
|
|
return (((reg & GENMASK(7, 6)) == BIT(6)) ||
|
|
((reg & GENMASK(7, 6)) == BIT(7)));
|
|
case AXP806_DCDCC:
|
|
return ((reg & GENMASK(7, 6)) == BIT(7));
|
|
case AXP806_DCDCE:
|
|
return !!(reg & BIT(5));
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static int axp20x_regulator_probe(struct platform_device *pdev)
|
|
{
|
|
struct regulator_dev *rdev;
|
|
struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
|
|
const struct regulator_desc *regulators;
|
|
struct regulator_config config = {
|
|
.dev = pdev->dev.parent,
|
|
.regmap = axp20x->regmap,
|
|
.driver_data = axp20x,
|
|
};
|
|
int ret, i, nregulators;
|
|
u32 workmode;
|
|
const char *dcdc1_name = axp22x_regulators[AXP22X_DCDC1].name;
|
|
const char *dcdc5_name = axp22x_regulators[AXP22X_DCDC5].name;
|
|
bool drivevbus = false;
|
|
|
|
switch (axp20x->variant) {
|
|
case AXP202_ID:
|
|
case AXP209_ID:
|
|
regulators = axp20x_regulators;
|
|
nregulators = AXP20X_REG_ID_MAX;
|
|
break;
|
|
case AXP221_ID:
|
|
case AXP223_ID:
|
|
regulators = axp22x_regulators;
|
|
nregulators = AXP22X_REG_ID_MAX;
|
|
drivevbus = of_property_read_bool(pdev->dev.parent->of_node,
|
|
"x-powers,drive-vbus-en");
|
|
break;
|
|
case AXP806_ID:
|
|
regulators = axp806_regulators;
|
|
nregulators = AXP806_REG_ID_MAX;
|
|
break;
|
|
case AXP809_ID:
|
|
regulators = axp809_regulators;
|
|
nregulators = AXP809_REG_ID_MAX;
|
|
break;
|
|
default:
|
|
dev_err(&pdev->dev, "Unsupported AXP variant: %ld\n",
|
|
axp20x->variant);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* This only sets the dcdc freq. Ignore any errors */
|
|
axp20x_regulator_parse_dt(pdev);
|
|
|
|
for (i = 0; i < nregulators; i++) {
|
|
const struct regulator_desc *desc = ®ulators[i];
|
|
struct regulator_desc *new_desc;
|
|
|
|
/*
|
|
* If this regulator is a slave in a poly-phase setup,
|
|
* skip it, as its controls are bound to the master
|
|
* regulator and won't work.
|
|
*/
|
|
if (axp20x_is_polyphase_slave(axp20x, i))
|
|
continue;
|
|
|
|
/*
|
|
* Regulators DC1SW and DC5LDO are connected internally,
|
|
* so we have to handle their supply names separately.
|
|
*
|
|
* We always register the regulators in proper sequence,
|
|
* so the supply names are correctly read. See the last
|
|
* part of this loop to see where we save the DT defined
|
|
* name.
|
|
*/
|
|
if ((regulators == axp22x_regulators && i == AXP22X_DC1SW) ||
|
|
(regulators == axp809_regulators && i == AXP809_DC1SW)) {
|
|
new_desc = devm_kzalloc(&pdev->dev, sizeof(*desc),
|
|
GFP_KERNEL);
|
|
*new_desc = regulators[i];
|
|
new_desc->supply_name = dcdc1_name;
|
|
desc = new_desc;
|
|
}
|
|
|
|
if ((regulators == axp22x_regulators && i == AXP22X_DC5LDO) ||
|
|
(regulators == axp809_regulators && i == AXP809_DC5LDO)) {
|
|
new_desc = devm_kzalloc(&pdev->dev, sizeof(*desc),
|
|
GFP_KERNEL);
|
|
*new_desc = regulators[i];
|
|
new_desc->supply_name = dcdc5_name;
|
|
desc = new_desc;
|
|
}
|
|
|
|
rdev = devm_regulator_register(&pdev->dev, desc, &config);
|
|
if (IS_ERR(rdev)) {
|
|
dev_err(&pdev->dev, "Failed to register %s\n",
|
|
regulators[i].name);
|
|
|
|
return PTR_ERR(rdev);
|
|
}
|
|
|
|
ret = of_property_read_u32(rdev->dev.of_node,
|
|
"x-powers,dcdc-workmode",
|
|
&workmode);
|
|
if (!ret) {
|
|
if (axp20x_set_dcdc_workmode(rdev, i, workmode))
|
|
dev_err(&pdev->dev, "Failed to set workmode on %s\n",
|
|
rdev->desc->name);
|
|
}
|
|
|
|
/*
|
|
* Save AXP22X DCDC1 / DCDC5 regulator names for later.
|
|
*/
|
|
if ((regulators == axp22x_regulators && i == AXP22X_DCDC1) ||
|
|
(regulators == axp809_regulators && i == AXP809_DCDC1))
|
|
of_property_read_string(rdev->dev.of_node,
|
|
"regulator-name",
|
|
&dcdc1_name);
|
|
|
|
if ((regulators == axp22x_regulators && i == AXP22X_DCDC5) ||
|
|
(regulators == axp809_regulators && i == AXP809_DCDC5))
|
|
of_property_read_string(rdev->dev.of_node,
|
|
"regulator-name",
|
|
&dcdc5_name);
|
|
}
|
|
|
|
if (drivevbus) {
|
|
/* Change N_VBUSEN sense pin to DRIVEVBUS output pin */
|
|
regmap_update_bits(axp20x->regmap, AXP20X_OVER_TMP,
|
|
AXP22X_MISC_N_VBUSEN_FUNC, 0);
|
|
rdev = devm_regulator_register(&pdev->dev,
|
|
&axp22x_drivevbus_regulator,
|
|
&config);
|
|
if (IS_ERR(rdev)) {
|
|
dev_err(&pdev->dev, "Failed to register drivevbus\n");
|
|
return PTR_ERR(rdev);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver axp20x_regulator_driver = {
|
|
.probe = axp20x_regulator_probe,
|
|
.driver = {
|
|
.name = "axp20x-regulator",
|
|
},
|
|
};
|
|
|
|
module_platform_driver(axp20x_regulator_driver);
|
|
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_AUTHOR("Carlo Caione <carlo@caione.org>");
|
|
MODULE_DESCRIPTION("Regulator Driver for AXP20X PMIC");
|
|
MODULE_ALIAS("platform:axp20x-regulator");
|