512 lines
15 KiB
C
512 lines
15 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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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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#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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* 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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* 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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* 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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* 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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* 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 256
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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_range act8600_reg_ranges[] = {
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regmap_reg_range(0x00, 0x01),
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regmap_reg_range(0x10, 0x10),
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regmap_reg_range(0x12, 0x12),
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regmap_reg_range(0x20, 0x20),
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regmap_reg_range(0x22, 0x22),
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regmap_reg_range(0x30, 0x30),
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regmap_reg_range(0x32, 0x32),
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regmap_reg_range(0x40, 0x41),
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regmap_reg_range(0x50, 0x51),
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regmap_reg_range(0x60, 0x61),
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regmap_reg_range(0x70, 0x71),
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regmap_reg_range(0x80, 0x81),
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regmap_reg_range(0x91, 0x91),
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regmap_reg_range(0xA1, 0xA1),
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regmap_reg_range(0xA8, 0xAA),
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regmap_reg_range(0xB0, 0xB0),
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regmap_reg_range(0xB2, 0xB2),
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regmap_reg_range(0xC1, 0xC1),
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};
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static const struct regmap_range act8600_reg_ro_ranges[] = {
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regmap_reg_range(0xAA, 0xAA),
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regmap_reg_range(0xC1, 0xC1),
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};
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static const struct regmap_range act8600_reg_volatile_ranges[] = {
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regmap_reg_range(0x00, 0x01),
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regmap_reg_range(0x12, 0x12),
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regmap_reg_range(0x22, 0x22),
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regmap_reg_range(0x32, 0x32),
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regmap_reg_range(0x41, 0x41),
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regmap_reg_range(0x51, 0x51),
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regmap_reg_range(0x61, 0x61),
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regmap_reg_range(0x71, 0x71),
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regmap_reg_range(0x81, 0x81),
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regmap_reg_range(0xA8, 0xA8),
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regmap_reg_range(0xAA, 0xAA),
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regmap_reg_range(0xB0, 0xB0),
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regmap_reg_range(0xC1, 0xC1),
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};
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static const struct regmap_access_table act8600_write_ranges_table = {
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.yes_ranges = act8600_reg_ranges,
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.n_yes_ranges = ARRAY_SIZE(act8600_reg_ranges),
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.no_ranges = act8600_reg_ro_ranges,
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.n_no_ranges = ARRAY_SIZE(act8600_reg_ro_ranges),
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};
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static const struct regmap_access_table act8600_read_ranges_table = {
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.yes_ranges = act8600_reg_ranges,
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.n_yes_ranges = ARRAY_SIZE(act8600_reg_ranges),
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};
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static const struct regmap_access_table act8600_volatile_ranges_table = {
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.yes_ranges = act8600_reg_volatile_ranges,
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.n_yes_ranges = ARRAY_SIZE(act8600_reg_volatile_ranges),
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};
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static const struct regmap_config act8600_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = 0xFF,
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.wr_table = &act8600_write_ranges_table,
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.rd_table = &act8600_read_ranges_table,
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.volatile_table = &act8600_volatile_ranges_table,
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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, 192, 247, 400000),
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REGULATOR_LINEAR_RANGE(41400000, 248, 255, 0),
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};
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static const 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 const 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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.of_match = of_match_ptr(_name), \
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.regulators_node = of_match_ptr("regulators"), \
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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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.of_match = of_match_ptr("SUDCDC_REG4"),
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.regulators_node = of_match_ptr("regulators"),
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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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.of_match = of_match_ptr("LDO_REG9"),
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.regulators_node = of_match_ptr("regulators"),
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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 = 3300000,
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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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.of_match = of_match_ptr("LDO_REG10"),
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.regulators_node = of_match_ptr("regulators"),
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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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#endif
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static struct act8865_regulator_data *act8865_get_regulator_data(
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int id, struct act8865_platform_data *pdata)
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{
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int i;
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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];
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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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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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const struct regulator_desc *regulators;
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struct act8865_platform_data *pdata = NULL;
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struct device *dev = &client->dev;
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int i, ret, num_regulators;
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struct act8865 *act8865;
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const struct regmap_config *regmap_config;
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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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if (dev->of_node) {
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const struct of_device_id *id;
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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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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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pdata = dev_get_platdata(dev);
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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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regmap_config = &act8600_regmap_config;
|
|
off_reg = -1;
|
|
off_mask = -1;
|
|
break;
|
|
case ACT8846:
|
|
regulators = act8846_regulators;
|
|
num_regulators = ARRAY_SIZE(act8846_regulators);
|
|
regmap_config = &act8865_regmap_config;
|
|
off_reg = ACT8846_GLB_OFF_CTRL;
|
|
off_mask = ACT8846_OFF_SYSMASK;
|
|
break;
|
|
case ACT8865:
|
|
if (voltage_select) {
|
|
regulators = act8865_alt_regulators;
|
|
num_regulators = ARRAY_SIZE(act8865_alt_regulators);
|
|
} else {
|
|
regulators = act8865_regulators;
|
|
num_regulators = ARRAY_SIZE(act8865_regulators);
|
|
}
|
|
regmap_config = &act8865_regmap_config;
|
|
off_reg = ACT8865_SYS_CTRL;
|
|
off_mask = ACT8865_MSTROFF;
|
|
break;
|
|
default:
|
|
dev_err(dev, "invalid device id %lu\n", type);
|
|
return -EINVAL;
|
|
}
|
|
|
|
act8865 = devm_kzalloc(dev, sizeof(struct act8865), GFP_KERNEL);
|
|
if (!act8865)
|
|
return -ENOMEM;
|
|
|
|
act8865->regmap = devm_regmap_init_i2c(client, regmap_config);
|
|
if (IS_ERR(act8865->regmap)) {
|
|
ret = PTR_ERR(act8865->regmap);
|
|
dev_err(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.driver_data = act8865;
|
|
config.regmap = act8865->regmap;
|
|
|
|
if (pdata) {
|
|
struct act8865_regulator_data *rdata;
|
|
|
|
rdata = act8865_get_regulator_data(desc->id, pdata);
|
|
if (rdata) {
|
|
config.init_data = rdata->init_data;
|
|
config.of_node = rdata->of_node;
|
|
}
|
|
}
|
|
|
|
rdev = devm_regulator_register(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);
|
|
|
|
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");
|