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562 lines
16 KiB
562 lines
16 KiB
/* |
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* act8865-regulator.c - Voltage regulation for active-semi ACT88xx PMUs |
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* |
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* http://www.active-semi.com/products/power-management-units/act88xx/ |
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* |
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* Copyright (C) 2013 Atmel Corporation |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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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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|
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#include <linux/module.h> |
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#include <linux/init.h> |
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#include <linux/i2c.h> |
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#include <linux/err.h> |
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#include <linux/platform_device.h> |
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#include <linux/regulator/driver.h> |
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#include <linux/regulator/act8865.h> |
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#include <linux/of.h> |
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#include <linux/of_device.h> |
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#include <linux/regulator/of_regulator.h> |
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#include <linux/regmap.h> |
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|
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/* |
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* ACT8600 Global Register Map. |
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*/ |
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#define ACT8600_SYS_MODE 0x00 |
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#define ACT8600_SYS_CTRL 0x01 |
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#define ACT8600_DCDC1_VSET 0x10 |
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#define ACT8600_DCDC1_CTRL 0x12 |
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#define ACT8600_DCDC2_VSET 0x20 |
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#define ACT8600_DCDC2_CTRL 0x22 |
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#define ACT8600_DCDC3_VSET 0x30 |
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#define ACT8600_DCDC3_CTRL 0x32 |
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#define ACT8600_SUDCDC4_VSET 0x40 |
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#define ACT8600_SUDCDC4_CTRL 0x41 |
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#define ACT8600_LDO5_VSET 0x50 |
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#define ACT8600_LDO5_CTRL 0x51 |
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#define ACT8600_LDO6_VSET 0x60 |
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#define ACT8600_LDO6_CTRL 0x61 |
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#define ACT8600_LDO7_VSET 0x70 |
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#define ACT8600_LDO7_CTRL 0x71 |
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#define ACT8600_LDO8_VSET 0x80 |
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#define ACT8600_LDO8_CTRL 0x81 |
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#define ACT8600_LDO910_CTRL 0x91 |
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#define ACT8600_APCH0 0xA1 |
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#define ACT8600_APCH1 0xA8 |
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#define ACT8600_APCH2 0xA9 |
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#define ACT8600_APCH_STAT 0xAA |
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#define ACT8600_OTG0 0xB0 |
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#define ACT8600_OTG1 0xB2 |
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|
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/* |
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* ACT8846 Global Register Map. |
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*/ |
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#define ACT8846_SYS0 0x00 |
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#define ACT8846_SYS1 0x01 |
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#define ACT8846_REG1_VSET 0x10 |
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#define ACT8846_REG1_CTRL 0x12 |
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#define ACT8846_REG2_VSET0 0x20 |
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#define ACT8846_REG2_VSET1 0x21 |
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#define ACT8846_REG2_CTRL 0x22 |
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#define ACT8846_REG3_VSET0 0x30 |
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#define ACT8846_REG3_VSET1 0x31 |
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#define ACT8846_REG3_CTRL 0x32 |
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#define ACT8846_REG4_VSET0 0x40 |
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#define ACT8846_REG4_VSET1 0x41 |
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#define ACT8846_REG4_CTRL 0x42 |
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#define ACT8846_REG5_VSET 0x50 |
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#define ACT8846_REG5_CTRL 0x51 |
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#define ACT8846_REG6_VSET 0x58 |
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#define ACT8846_REG6_CTRL 0x59 |
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#define ACT8846_REG7_VSET 0x60 |
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#define ACT8846_REG7_CTRL 0x61 |
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#define ACT8846_REG8_VSET 0x68 |
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#define ACT8846_REG8_CTRL 0x69 |
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#define ACT8846_REG9_VSET 0x70 |
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#define ACT8846_REG9_CTRL 0x71 |
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#define ACT8846_REG10_VSET 0x80 |
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#define ACT8846_REG10_CTRL 0x81 |
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#define ACT8846_REG11_VSET 0x90 |
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#define ACT8846_REG11_CTRL 0x91 |
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#define ACT8846_REG12_VSET 0xa0 |
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#define ACT8846_REG12_CTRL 0xa1 |
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#define ACT8846_REG13_CTRL 0xb1 |
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#define ACT8846_GLB_OFF_CTRL 0xc3 |
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#define ACT8846_OFF_SYSMASK 0x18 |
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|
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/* |
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* ACT8865 Global Register Map. |
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*/ |
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#define ACT8865_SYS_MODE 0x00 |
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#define ACT8865_SYS_CTRL 0x01 |
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#define ACT8865_DCDC1_VSET1 0x20 |
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#define ACT8865_DCDC1_VSET2 0x21 |
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#define ACT8865_DCDC1_CTRL 0x22 |
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#define ACT8865_DCDC2_VSET1 0x30 |
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#define ACT8865_DCDC2_VSET2 0x31 |
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#define ACT8865_DCDC2_CTRL 0x32 |
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#define ACT8865_DCDC3_VSET1 0x40 |
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#define ACT8865_DCDC3_VSET2 0x41 |
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#define ACT8865_DCDC3_CTRL 0x42 |
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#define ACT8865_LDO1_VSET 0x50 |
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#define ACT8865_LDO1_CTRL 0x51 |
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#define ACT8865_LDO2_VSET 0x54 |
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#define ACT8865_LDO2_CTRL 0x55 |
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#define ACT8865_LDO3_VSET 0x60 |
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#define ACT8865_LDO3_CTRL 0x61 |
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#define ACT8865_LDO4_VSET 0x64 |
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#define ACT8865_LDO4_CTRL 0x65 |
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#define ACT8865_MSTROFF 0x20 |
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|
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/* |
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* Field Definitions. |
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*/ |
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#define ACT8865_ENA 0x80 /* ON - [7] */ |
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#define ACT8865_VSEL_MASK 0x3F /* VSET - [5:0] */ |
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#define ACT8600_LDO10_ENA 0x40 /* ON - [6] */ |
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#define ACT8600_SUDCDC_VSEL_MASK 0xFF /* SUDCDC VSET - [7:0] */ |
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|
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/* |
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* ACT8865 voltage number |
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*/ |
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#define ACT8865_VOLTAGE_NUM 64 |
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#define ACT8600_SUDCDC_VOLTAGE_NUM 255 |
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struct act8865 { |
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struct regmap *regmap; |
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int off_reg; |
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int off_mask; |
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}; |
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static const struct regmap_config act8865_regmap_config = { |
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.reg_bits = 8, |
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.val_bits = 8, |
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}; |
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static const struct regulator_linear_range act8865_voltage_ranges[] = { |
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REGULATOR_LINEAR_RANGE(600000, 0, 23, 25000), |
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REGULATOR_LINEAR_RANGE(1200000, 24, 47, 50000), |
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REGULATOR_LINEAR_RANGE(2400000, 48, 63, 100000), |
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}; |
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static const struct regulator_linear_range act8600_sudcdc_voltage_ranges[] = { |
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REGULATOR_LINEAR_RANGE(3000000, 0, 63, 0), |
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REGULATOR_LINEAR_RANGE(3000000, 64, 159, 100000), |
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REGULATOR_LINEAR_RANGE(12600000, 160, 191, 200000), |
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REGULATOR_LINEAR_RANGE(19000000, 191, 255, 400000), |
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}; |
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static struct regulator_ops act8865_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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.get_voltage_sel = regulator_get_voltage_sel_regmap, |
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.set_voltage_sel = regulator_set_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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}; |
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static struct regulator_ops act8865_ldo_ops = { |
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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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#define ACT88xx_REG(_name, _family, _id, _vsel_reg, _supply) \ |
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[_family##_ID_##_id] = { \ |
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.name = _name, \ |
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.supply_name = _supply, \ |
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.id = _family##_ID_##_id, \ |
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.type = REGULATOR_VOLTAGE, \ |
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.ops = &act8865_ops, \ |
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.n_voltages = ACT8865_VOLTAGE_NUM, \ |
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.linear_ranges = act8865_voltage_ranges, \ |
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.n_linear_ranges = ARRAY_SIZE(act8865_voltage_ranges), \ |
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.vsel_reg = _family##_##_id##_##_vsel_reg, \ |
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.vsel_mask = ACT8865_VSEL_MASK, \ |
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.enable_reg = _family##_##_id##_CTRL, \ |
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.enable_mask = ACT8865_ENA, \ |
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.owner = THIS_MODULE, \ |
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} |
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static const struct regulator_desc act8600_regulators[] = { |
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ACT88xx_REG("DCDC1", ACT8600, DCDC1, VSET, "vp1"), |
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ACT88xx_REG("DCDC2", ACT8600, DCDC2, VSET, "vp2"), |
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ACT88xx_REG("DCDC3", ACT8600, DCDC3, VSET, "vp3"), |
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{ |
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.name = "SUDCDC_REG4", |
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.id = ACT8600_ID_SUDCDC4, |
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.ops = &act8865_ops, |
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.type = REGULATOR_VOLTAGE, |
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.n_voltages = ACT8600_SUDCDC_VOLTAGE_NUM, |
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.linear_ranges = act8600_sudcdc_voltage_ranges, |
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.n_linear_ranges = ARRAY_SIZE(act8600_sudcdc_voltage_ranges), |
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.vsel_reg = ACT8600_SUDCDC4_VSET, |
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.vsel_mask = ACT8600_SUDCDC_VSEL_MASK, |
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.enable_reg = ACT8600_SUDCDC4_CTRL, |
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.enable_mask = ACT8865_ENA, |
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.owner = THIS_MODULE, |
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}, |
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ACT88xx_REG("LDO5", ACT8600, LDO5, VSET, "inl"), |
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ACT88xx_REG("LDO6", ACT8600, LDO6, VSET, "inl"), |
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ACT88xx_REG("LDO7", ACT8600, LDO7, VSET, "inl"), |
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ACT88xx_REG("LDO8", ACT8600, LDO8, VSET, "inl"), |
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{ |
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.name = "LDO_REG9", |
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.id = ACT8600_ID_LDO9, |
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.ops = &act8865_ldo_ops, |
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.type = REGULATOR_VOLTAGE, |
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.n_voltages = 1, |
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.fixed_uV = 1800000, |
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.enable_reg = ACT8600_LDO910_CTRL, |
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.enable_mask = ACT8865_ENA, |
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.owner = THIS_MODULE, |
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}, |
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{ |
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.name = "LDO_REG10", |
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.id = ACT8600_ID_LDO10, |
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.ops = &act8865_ldo_ops, |
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.type = REGULATOR_VOLTAGE, |
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.n_voltages = 1, |
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.fixed_uV = 1200000, |
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.enable_reg = ACT8600_LDO910_CTRL, |
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.enable_mask = ACT8600_LDO10_ENA, |
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.owner = THIS_MODULE, |
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}, |
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}; |
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static const struct regulator_desc act8846_regulators[] = { |
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ACT88xx_REG("REG1", ACT8846, REG1, VSET, "vp1"), |
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ACT88xx_REG("REG2", ACT8846, REG2, VSET0, "vp2"), |
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ACT88xx_REG("REG3", ACT8846, REG3, VSET0, "vp3"), |
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ACT88xx_REG("REG4", ACT8846, REG4, VSET0, "vp4"), |
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ACT88xx_REG("REG5", ACT8846, REG5, VSET, "inl1"), |
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ACT88xx_REG("REG6", ACT8846, REG6, VSET, "inl1"), |
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ACT88xx_REG("REG7", ACT8846, REG7, VSET, "inl1"), |
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ACT88xx_REG("REG8", ACT8846, REG8, VSET, "inl2"), |
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ACT88xx_REG("REG9", ACT8846, REG9, VSET, "inl2"), |
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ACT88xx_REG("REG10", ACT8846, REG10, VSET, "inl3"), |
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ACT88xx_REG("REG11", ACT8846, REG11, VSET, "inl3"), |
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ACT88xx_REG("REG12", ACT8846, REG12, VSET, "inl3"), |
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}; |
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static const struct regulator_desc act8865_regulators[] = { |
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ACT88xx_REG("DCDC_REG1", ACT8865, DCDC1, VSET1, "vp1"), |
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ACT88xx_REG("DCDC_REG2", ACT8865, DCDC2, VSET1, "vp2"), |
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ACT88xx_REG("DCDC_REG3", ACT8865, DCDC3, VSET1, "vp3"), |
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ACT88xx_REG("LDO_REG1", ACT8865, LDO1, VSET, "inl45"), |
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ACT88xx_REG("LDO_REG2", ACT8865, LDO2, VSET, "inl45"), |
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ACT88xx_REG("LDO_REG3", ACT8865, LDO3, VSET, "inl67"), |
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ACT88xx_REG("LDO_REG4", ACT8865, LDO4, VSET, "inl67"), |
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}; |
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static const struct regulator_desc act8865_alt_regulators[] = { |
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ACT88xx_REG("DCDC_REG1", ACT8865, DCDC1, VSET2, "vp1"), |
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ACT88xx_REG("DCDC_REG2", ACT8865, DCDC2, VSET2, "vp2"), |
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ACT88xx_REG("DCDC_REG3", ACT8865, DCDC3, VSET2, "vp3"), |
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ACT88xx_REG("LDO_REG1", ACT8865, LDO1, VSET, "inl45"), |
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ACT88xx_REG("LDO_REG2", ACT8865, LDO2, VSET, "inl45"), |
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ACT88xx_REG("LDO_REG3", ACT8865, LDO3, VSET, "inl67"), |
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ACT88xx_REG("LDO_REG4", ACT8865, LDO4, VSET, "inl67"), |
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}; |
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#ifdef CONFIG_OF |
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static const struct of_device_id act8865_dt_ids[] = { |
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{ .compatible = "active-semi,act8600", .data = (void *)ACT8600 }, |
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{ .compatible = "active-semi,act8846", .data = (void *)ACT8846 }, |
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{ .compatible = "active-semi,act8865", .data = (void *)ACT8865 }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(of, act8865_dt_ids); |
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static struct of_regulator_match act8846_matches[] = { |
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[ACT8846_ID_REG1] = { .name = "REG1" }, |
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[ACT8846_ID_REG2] = { .name = "REG2" }, |
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[ACT8846_ID_REG3] = { .name = "REG3" }, |
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[ACT8846_ID_REG4] = { .name = "REG4" }, |
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[ACT8846_ID_REG5] = { .name = "REG5" }, |
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[ACT8846_ID_REG6] = { .name = "REG6" }, |
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[ACT8846_ID_REG7] = { .name = "REG7" }, |
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[ACT8846_ID_REG8] = { .name = "REG8" }, |
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[ACT8846_ID_REG9] = { .name = "REG9" }, |
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[ACT8846_ID_REG10] = { .name = "REG10" }, |
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[ACT8846_ID_REG11] = { .name = "REG11" }, |
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[ACT8846_ID_REG12] = { .name = "REG12" }, |
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}; |
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static struct of_regulator_match act8865_matches[] = { |
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[ACT8865_ID_DCDC1] = { .name = "DCDC_REG1"}, |
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[ACT8865_ID_DCDC2] = { .name = "DCDC_REG2"}, |
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[ACT8865_ID_DCDC3] = { .name = "DCDC_REG3"}, |
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[ACT8865_ID_LDO1] = { .name = "LDO_REG1"}, |
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[ACT8865_ID_LDO2] = { .name = "LDO_REG2"}, |
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[ACT8865_ID_LDO3] = { .name = "LDO_REG3"}, |
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[ACT8865_ID_LDO4] = { .name = "LDO_REG4"}, |
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}; |
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static struct of_regulator_match act8600_matches[] = { |
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[ACT8600_ID_DCDC1] = { .name = "DCDC_REG1"}, |
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[ACT8600_ID_DCDC2] = { .name = "DCDC_REG2"}, |
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[ACT8600_ID_DCDC3] = { .name = "DCDC_REG3"}, |
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[ACT8600_ID_SUDCDC4] = { .name = "SUDCDC_REG4"}, |
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[ACT8600_ID_LDO5] = { .name = "LDO_REG5"}, |
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[ACT8600_ID_LDO6] = { .name = "LDO_REG6"}, |
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[ACT8600_ID_LDO7] = { .name = "LDO_REG7"}, |
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[ACT8600_ID_LDO8] = { .name = "LDO_REG8"}, |
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[ACT8600_ID_LDO9] = { .name = "LDO_REG9"}, |
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[ACT8600_ID_LDO10] = { .name = "LDO_REG10"}, |
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}; |
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static int act8865_pdata_from_dt(struct device *dev, |
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struct device_node **of_node, |
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struct act8865_platform_data *pdata, |
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unsigned long type) |
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{ |
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int matched, i, num_matches; |
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struct device_node *np; |
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struct act8865_regulator_data *regulator; |
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struct of_regulator_match *matches; |
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np = of_get_child_by_name(dev->of_node, "regulators"); |
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if (!np) { |
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dev_err(dev, "missing 'regulators' subnode in DT\n"); |
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return -EINVAL; |
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} |
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switch (type) { |
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case ACT8600: |
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matches = act8600_matches; |
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num_matches = ARRAY_SIZE(act8600_matches); |
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break; |
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case ACT8846: |
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matches = act8846_matches; |
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num_matches = ARRAY_SIZE(act8846_matches); |
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break; |
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case ACT8865: |
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matches = act8865_matches; |
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num_matches = ARRAY_SIZE(act8865_matches); |
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break; |
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default: |
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dev_err(dev, "invalid device id %lu\n", type); |
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return -EINVAL; |
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} |
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matched = of_regulator_match(dev, np, matches, num_matches); |
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of_node_put(np); |
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if (matched <= 0) |
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return matched; |
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pdata->regulators = devm_kzalloc(dev, |
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sizeof(struct act8865_regulator_data) * |
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num_matches, GFP_KERNEL); |
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if (!pdata->regulators) |
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return -ENOMEM; |
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pdata->num_regulators = num_matches; |
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regulator = pdata->regulators; |
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for (i = 0; i < num_matches; i++) { |
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regulator->id = i; |
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regulator->name = matches[i].name; |
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regulator->platform_data = matches[i].init_data; |
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of_node[i] = matches[i].of_node; |
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regulator++; |
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} |
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return 0; |
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} |
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#else |
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static inline int act8865_pdata_from_dt(struct device *dev, |
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struct device_node **of_node, |
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struct act8865_platform_data *pdata, |
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unsigned long type) |
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{ |
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return 0; |
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} |
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#endif |
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|
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static struct regulator_init_data |
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*act8865_get_init_data(int id, struct act8865_platform_data *pdata) |
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{ |
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int i; |
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|
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if (!pdata) |
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return NULL; |
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for (i = 0; i < pdata->num_regulators; i++) { |
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if (pdata->regulators[i].id == id) |
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return pdata->regulators[i].platform_data; |
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} |
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return NULL; |
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} |
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static struct i2c_client *act8865_i2c_client; |
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static void act8865_power_off(void) |
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{ |
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struct act8865 *act8865; |
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|
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act8865 = i2c_get_clientdata(act8865_i2c_client); |
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regmap_write(act8865->regmap, act8865->off_reg, act8865->off_mask); |
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while (1); |
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} |
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static int act8865_pmic_probe(struct i2c_client *client, |
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const struct i2c_device_id *i2c_id) |
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{ |
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static const struct regulator_desc *regulators; |
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struct act8865_platform_data pdata_of, *pdata; |
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struct device *dev = &client->dev; |
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struct device_node **of_node; |
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int i, ret, num_regulators; |
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struct act8865 *act8865; |
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unsigned long type; |
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int off_reg, off_mask; |
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int voltage_select = 0; |
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pdata = dev_get_platdata(dev); |
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|
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if (dev->of_node && !pdata) { |
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const struct of_device_id *id; |
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|
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id = of_match_device(of_match_ptr(act8865_dt_ids), dev); |
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if (!id) |
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return -ENODEV; |
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type = (unsigned long) id->data; |
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|
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voltage_select = !!of_get_property(dev->of_node, |
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"active-semi,vsel-high", |
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NULL); |
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} else { |
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type = i2c_id->driver_data; |
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} |
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|
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switch (type) { |
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case ACT8600: |
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regulators = act8600_regulators; |
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num_regulators = ARRAY_SIZE(act8600_regulators); |
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off_reg = -1; |
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off_mask = -1; |
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break; |
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case ACT8846: |
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regulators = act8846_regulators; |
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num_regulators = ARRAY_SIZE(act8846_regulators); |
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off_reg = ACT8846_GLB_OFF_CTRL; |
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off_mask = ACT8846_OFF_SYSMASK; |
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break; |
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case ACT8865: |
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if (voltage_select) { |
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regulators = act8865_alt_regulators; |
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num_regulators = ARRAY_SIZE(act8865_alt_regulators); |
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} else { |
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regulators = act8865_regulators; |
|
num_regulators = ARRAY_SIZE(act8865_regulators); |
|
} |
|
off_reg = ACT8865_SYS_CTRL; |
|
off_mask = ACT8865_MSTROFF; |
|
break; |
|
default: |
|
dev_err(dev, "invalid device id %lu\n", type); |
|
return -EINVAL; |
|
} |
|
|
|
of_node = devm_kzalloc(dev, sizeof(struct device_node *) * |
|
num_regulators, GFP_KERNEL); |
|
if (!of_node) |
|
return -ENOMEM; |
|
|
|
if (dev->of_node && !pdata) { |
|
ret = act8865_pdata_from_dt(dev, of_node, &pdata_of, type); |
|
if (ret < 0) |
|
return ret; |
|
|
|
pdata = &pdata_of; |
|
} |
|
|
|
if (pdata->num_regulators > num_regulators) { |
|
dev_err(dev, "too many regulators: %d\n", |
|
pdata->num_regulators); |
|
return -EINVAL; |
|
} |
|
|
|
act8865 = devm_kzalloc(dev, sizeof(struct act8865), GFP_KERNEL); |
|
if (!act8865) |
|
return -ENOMEM; |
|
|
|
act8865->regmap = devm_regmap_init_i2c(client, &act8865_regmap_config); |
|
if (IS_ERR(act8865->regmap)) { |
|
ret = PTR_ERR(act8865->regmap); |
|
dev_err(&client->dev, "Failed to allocate register map: %d\n", |
|
ret); |
|
return ret; |
|
} |
|
|
|
if (of_device_is_system_power_controller(dev->of_node)) { |
|
if (!pm_power_off && (off_reg > 0)) { |
|
act8865_i2c_client = client; |
|
act8865->off_reg = off_reg; |
|
act8865->off_mask = off_mask; |
|
pm_power_off = act8865_power_off; |
|
} else { |
|
dev_err(dev, "Failed to set poweroff capability, already defined\n"); |
|
} |
|
} |
|
|
|
/* Finally register devices */ |
|
for (i = 0; i < num_regulators; i++) { |
|
const struct regulator_desc *desc = ®ulators[i]; |
|
struct regulator_config config = { }; |
|
struct regulator_dev *rdev; |
|
|
|
config.dev = dev; |
|
config.init_data = act8865_get_init_data(desc->id, pdata); |
|
config.of_node = of_node[i]; |
|
config.driver_data = act8865; |
|
config.regmap = act8865->regmap; |
|
|
|
rdev = devm_regulator_register(&client->dev, desc, &config); |
|
if (IS_ERR(rdev)) { |
|
dev_err(dev, "failed to register %s\n", desc->name); |
|
return PTR_ERR(rdev); |
|
} |
|
} |
|
|
|
i2c_set_clientdata(client, act8865); |
|
devm_kfree(dev, of_node); |
|
|
|
return 0; |
|
} |
|
|
|
static const struct i2c_device_id act8865_ids[] = { |
|
{ .name = "act8600", .driver_data = ACT8600 }, |
|
{ .name = "act8846", .driver_data = ACT8846 }, |
|
{ .name = "act8865", .driver_data = ACT8865 }, |
|
{ }, |
|
}; |
|
MODULE_DEVICE_TABLE(i2c, act8865_ids); |
|
|
|
static struct i2c_driver act8865_pmic_driver = { |
|
.driver = { |
|
.name = "act8865", |
|
}, |
|
.probe = act8865_pmic_probe, |
|
.id_table = act8865_ids, |
|
}; |
|
|
|
module_i2c_driver(act8865_pmic_driver); |
|
|
|
MODULE_DESCRIPTION("active-semi act88xx voltage regulator driver"); |
|
MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>"); |
|
MODULE_LICENSE("GPL v2");
|
|
|