523 lines
13 KiB
C
523 lines
13 KiB
C
/*
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* Regulators driver for allwinnertech AXP15X
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*
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* Copyright (C) 2014 allwinnertech Ltd.
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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 version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/err.h>
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#include <linux/init.h>
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#include <linux/regmap.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/machine.h>
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#include <linux/module.h>
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#include <linux/power/axp_depend.h>
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#include "../axp-core.h"
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#include "../axp-regulator.h"
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#include "axp80.h"
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#include "axp80-regu.h"
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/* Reverse engineered partly from Platformx drivers */
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enum axp_regls {
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VCC_DCDCA,
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VCC_DCDCB,
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VCC_DCDCC,
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VCC_DCDCD,
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VCC_DCDCE,
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VCC_LDO1,
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VCC_LDO2,
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VCC_LDO3,
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VCC_LDO4,
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VCC_LDO5,
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VCC_LDO6,
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VCC_LDO7,
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VCC_LDO8,
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VCC_LDO9,
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VCC_LDO10,
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VCC_LDO11,
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VCC_80_MAX,
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};
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struct axp80_regulators {
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struct regulator_dev *regulators[VCC_80_MAX];
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struct axp_dev *chip;
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};
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#define AXP80_LDO(_id, min, max, step1, vreg, shift, nbits,\
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ereg, emask, enval, disval, switch_vol, step2, new_level,\
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mode_addr, freq_addr, dvm_ereg, dvm_ebit, dvm_flag) \
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AXP_LDO(AXP80, _id, min, max, step1, vreg, shift, nbits,\
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ereg, emask, enval, disval, switch_vol, step2, new_level,\
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mode_addr, freq_addr, dvm_ereg, dvm_ebit, dvm_flag)
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#define AXP80_DCDC(_id, min, max, step1, vreg, shift, nbits,\
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ereg, emask, enval, disval, switch_vol, step2, new_level,\
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mode_addr, mode_bit, freq_addr, dvm_ereg, dvm_ebit, dvm_flag) \
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AXP_DCDC(AXP80, _id, min, max, step1, vreg, shift, nbits,\
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ereg, emask, enval, disval, switch_vol, step2, new_level,\
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mode_addr, mode_bit, freq_addr, dvm_ereg, dvm_ebit, dvm_flag)
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static struct axp_regulator_info axp80_regulator_info[] = {
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AXP80_DCDC(A, 600, 1520, 10, DCDCA, 0, 7, DCDCAEN, 0x01,
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0x01, 0, 1100, 20, 0, 0x1B, 0x01, 0x1C, 0x1a, 0, 0),
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AXP80_DCDC(B, 1000, 2550, 50, DCDCB, 0, 5, DCDCBEN, 0x02,
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0x02, 0, 0, 0, 0, 0x1B, 0x02, 0x1C, 0, 0, 0),
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AXP80_DCDC(C, 600, 1520, 10, DCDCC, 0, 7, DCDCCEN, 0x04,
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0x04, 0, 1100, 20, 0, 0x1B, 0x04, 0x1C, 0x1a, 1, 0),
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AXP80_DCDC(D, 600, 3300, 20, DCDCD, 0, 6, DCDCDEN, 0x08,
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0x08, 0, 1500, 100, 0, 0x1B, 0x08, 0x1C, 0x1a, 2, 0),
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AXP80_DCDC(E, 1100, 3400, 100, DCDCE, 0, 5, DCDCEEN, 0x10,
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0x10, 0, 0, 0, 0, 0x1B, 0x10, 0x1C, 0, 0, 0),
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AXP80_LDO(1, 700, 3300, 100, ALDO1, 0, 5, ALDO1EN, 0x20,
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0x20, 0, 0, 0, 0, 0, 0, 0, 0, 0),
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AXP80_LDO(2, 700, 3400, 100, ALDO2, 0, 5, ALDO2EN, 0x40,
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0x40, 0, 0, 0, 0, 0, 0, 0, 0, 0),
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AXP80_LDO(3, 700, 3300, 100, ALDO3, 0, 5, ALDO3EN, 0x80,
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0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0),
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AXP80_LDO(4, 700, 1900, 100, BLDO1, 0, 4, BLDO1EN, 0x01,
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0x01, 0, 0, 0, 0, 0, 0, 0, 0, 0),
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AXP80_LDO(5, 700, 1900, 100, BLDO2, 0, 4, BLDO2EN, 0x02,
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0x02, 0, 0, 0, 0, 0, 0, 0, 0, 0),
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AXP80_LDO(6, 700, 1900, 100, BLDO3, 0, 4, BLDO3EN, 0x04,
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0x04, 0, 0, 0, 0, 0, 0, 0, 0, 0),
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AXP80_LDO(7, 700, 1900, 100, BLDO4, 0, 4, BLDO4EN, 0x08,
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0x08, 0, 0, 0, 0, 0, 0, 0, 0, 0),
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AXP80_LDO(8, 700, 3300, 100, CLDO1, 0, 5, CLDO1EN, 0x10,
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0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0),
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AXP80_LDO(9, 700, 4200, 100, CLDO2, 0, 5, CLDO2EN, 0x20,
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0x20, 0, 3400, 200, 0, 0, 0, 0, 0, 0),
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AXP80_LDO(10, 700, 3300, 100, CLDO3, 0, 5, CLDO3EN, 0x40,
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0x40, 0, 0, 0, 0, 0, 0, 0, 0, 0),
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AXP80_LDO(11, 3300, 3300, 0, SW, 0, 0, SWEN, 0x80,
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0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0),
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};
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static struct regulator_init_data axp_regl_init_data[] = {
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[VCC_DCDCA] = {
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.constraints = {
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.name = "axp80_dcdca",
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.min_uV = 600000,
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.max_uV = 1520000,
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
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| REGULATOR_CHANGE_STATUS,
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},
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},
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[VCC_DCDCB] = {
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.constraints = {
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.name = "axp80_dcdcb",
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.min_uV = 1000000,
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.max_uV = 2550000,
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
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| REGULATOR_CHANGE_STATUS,
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},
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},
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[VCC_DCDCC] = {
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.constraints = {
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.name = "axp80_dcdcc",
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.min_uV = 600000,
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.max_uV = 1520000,
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
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| REGULATOR_CHANGE_STATUS,
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},
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},
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[VCC_DCDCD] = {
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.constraints = {
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.name = "axp80_dcdcd",
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.min_uV = 600000,
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.max_uV = 3300000,
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
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| REGULATOR_CHANGE_STATUS,
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},
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},
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[VCC_DCDCE] = {
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.constraints = {
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.name = "axp80_dcdce",
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.min_uV = 1100000,
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.max_uV = 3400000,
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
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| REGULATOR_CHANGE_STATUS,
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},
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},
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[VCC_LDO1] = {
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.constraints = {
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.name = "axp80_aldo1",
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.min_uV = 700000,
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.max_uV = 3300000,
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
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| REGULATOR_CHANGE_STATUS,
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},
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},
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[VCC_LDO2] = {
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.constraints = {
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.name = "axp80_aldo2",
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.min_uV = 700000,
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.max_uV = 3400000,
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
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| REGULATOR_CHANGE_STATUS,
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},
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},
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[VCC_LDO3] = {
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.constraints = {
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.name = "axp80_aldo3",
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.min_uV = 700000,
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.max_uV = 3300000,
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
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| REGULATOR_CHANGE_STATUS,
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},
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},
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[VCC_LDO4] = {
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.constraints = {
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.name = "axp80_bldo1",
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.min_uV = 700000,
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.max_uV = 1900000,
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
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| REGULATOR_CHANGE_STATUS,
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},
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},
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[VCC_LDO5] = {
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.constraints = {
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.name = "axp80_bldo2",
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.min_uV = 700000,
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.max_uV = 1900000,
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
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| REGULATOR_CHANGE_STATUS,
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},
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},
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[VCC_LDO6] = {
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.constraints = {
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.name = "axp80_bldo3",
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.min_uV = 700000,
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.max_uV = 1900000,
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
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| REGULATOR_CHANGE_STATUS,
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},
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},
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[VCC_LDO7] = {
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.constraints = {
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.name = "axp80_bldo4",
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.min_uV = 700000,
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.max_uV = 1900000,
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
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| REGULATOR_CHANGE_STATUS,
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},
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},
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[VCC_LDO8] = {
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.constraints = {
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.name = "axp80_cldo1",
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.min_uV = 700000,
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.max_uV = 3300000,
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
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| REGULATOR_CHANGE_STATUS,
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#ifdef CONFIG_ARCH_SUN50IW6
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.always_on = 1,
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#endif
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},
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},
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[VCC_LDO9] = {
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.constraints = {
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.name = "axp80_cldo2",
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.min_uV = 700000,
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.max_uV = 4200000,
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
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| REGULATOR_CHANGE_STATUS,
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},
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},
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[VCC_LDO10] = {
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.constraints = {
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.name = "axp80_cldo3",
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.min_uV = 700000,
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.max_uV = 3300000,
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
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| REGULATOR_CHANGE_STATUS,
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},
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},
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[VCC_LDO11] = {
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.constraints = {
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.name = "axp80_sw",
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.valid_ops_mask = REGULATOR_CHANGE_STATUS,
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},
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},
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};
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static ssize_t workmode_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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int ret;
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uint8_t val;
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struct regulator_dev *rdev;
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struct axp_regulator_info *info;
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struct axp_regmap *regmap;
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rdev = container_of(dev, struct regulator_dev, dev);
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info = rdev_get_drvdata(rdev);
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regmap = info->regmap;
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ret = axp_regmap_read(regmap, info->mode_reg, &val);
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if (ret)
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return sprintf(buf, "IO ERROR\n");
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if ((val & info->mode_mask) == info->mode_mask)
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return sprintf(buf, "PWM\n");
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else
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return sprintf(buf, "AUTO\n");
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}
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static ssize_t workmode_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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uint8_t val;
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struct regulator_dev *rdev;
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struct axp_regulator_info *info;
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struct axp_regmap *regmap;
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unsigned int mode;
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int ret;
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rdev = container_of(dev, struct regulator_dev, dev);
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info = rdev_get_drvdata(rdev);
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regmap = info->regmap;
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ret = sscanf(buf, "%u", &mode);
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if (ret != 1)
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return -EINVAL;
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val = !!mode;
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if (val)
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axp_regmap_set_bits(regmap, info->mode_reg, info->mode_mask);
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else
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axp_regmap_clr_bits(regmap, info->mode_reg, info->mode_mask);
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return count;
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}
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static ssize_t frequency_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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int ret;
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uint8_t val;
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struct regulator_dev *rdev;
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struct axp_regulator_info *info;
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struct axp_regmap *regmap;
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rdev = container_of(dev, struct regulator_dev, dev);
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info = rdev_get_drvdata(rdev);
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regmap = info->regmap;
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ret = axp_regmap_read(regmap, info->freq_reg, &val);
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if (ret)
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return ret;
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ret = val & 0x0F;
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return sprintf(buf, "%d\n", (ret * 5 + 50));
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}
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static ssize_t frequency_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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uint8_t val, tmp;
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int var, err;
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struct regulator_dev *rdev;
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struct axp_regulator_info *info;
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struct axp_regmap *regmap;
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rdev = container_of(dev, struct regulator_dev, dev);
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info = rdev_get_drvdata(rdev);
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regmap = info->regmap;
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err = kstrtoint(buf, 10, &var);
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if (err)
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return err;
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if (var < 50)
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var = 50;
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if (var > 100)
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var = 100;
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val = (var - 50) / 5;
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val &= 0x0F;
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axp_regmap_read(regmap, info->freq_reg, &tmp);
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tmp &= 0xF0;
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val |= tmp;
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axp_regmap_write(regmap, info->freq_reg, val);
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return count;
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}
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static struct device_attribute axp_regu_attrs[] = {
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AXP_REGU_ATTR(workmode),
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AXP_REGU_ATTR(frequency),
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};
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static int axp_regu_create_attrs(struct device *dev)
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{
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int j, ret;
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for (j = 0; j < ARRAY_SIZE(axp_regu_attrs); j++) {
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ret = device_create_file(dev, &axp_regu_attrs[j]);
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if (ret)
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goto sysfs_failed;
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}
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return 0;
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sysfs_failed:
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while (j--)
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device_remove_file(dev, &axp_regu_attrs[j]);
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return ret;
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}
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static s32 axp80_regu_dependence(const char *ldo_name)
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{
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s32 axp80_dependence = 0;
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if (strstr(ldo_name, "dcdca") != NULL)
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axp80_dependence |= AXP806_808_DCDC1;
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else if (strstr(ldo_name, "dcdcb") != NULL)
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axp80_dependence |= AXP806_808_DCDC2;
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else if (strstr(ldo_name, "dcdcc") != NULL)
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axp80_dependence |= AXP806_808_DCDC3;
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else if (strstr(ldo_name, "dcdcd") != NULL)
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axp80_dependence |= AXP806_808_DCDC4;
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else if (strstr(ldo_name, "dcdce") != NULL)
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axp80_dependence |= AXP806_808_DCDC5;
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else if (strstr(ldo_name, "aldo1") != NULL)
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axp80_dependence |= AXP806_808_ALDO1;
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else if (strstr(ldo_name, "aldo2") != NULL)
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axp80_dependence |= AXP806_808_ALDO2;
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else if (strstr(ldo_name, "aldo3") != NULL)
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axp80_dependence |= AXP806_808_ALDO3;
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else if (strstr(ldo_name, "bldo1") != NULL)
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axp80_dependence |= AXP806_808_BLDO1;
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else if (strstr(ldo_name, "bldo2") != NULL)
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axp80_dependence |= AXP806_808_BLDO2;
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else if (strstr(ldo_name, "bldo3") != NULL)
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axp80_dependence |= AXP806_808_BLDO3;
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else if (strstr(ldo_name, "bldo4") != NULL)
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axp80_dependence |= AXP806_808_BLDO4;
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else if (strstr(ldo_name, "cldo1") != NULL)
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axp80_dependence |= AXP806_808_CLDO1;
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else if (strstr(ldo_name, "cldo2") != NULL)
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axp80_dependence |= AXP806_808_CLDO2;
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else if (strstr(ldo_name, "cldo3") != NULL)
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axp80_dependence |= AXP806_808_CLDO3;
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else if (strstr(ldo_name, "sw") != NULL)
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axp80_dependence |= AXP806_808_SW0;
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else
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return -1;
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return axp80_dependence;
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}
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static int axp80_regulator_probe(struct platform_device *pdev)
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{
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s32 i, ret = 0;
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struct axp_regulator_info *info;
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struct axp80_regulators *regu_data;
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struct axp_dev *axp_dev = dev_get_drvdata(pdev->dev.parent);
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if (pdev->dev.of_node) {
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ret = axp_regulator_dt_parse(pdev->dev.of_node,
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axp_regl_init_data,
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axp80_regu_dependence);
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if (ret) {
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pr_err("%s parse device tree err\n", __func__);
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return -EINVAL;
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}
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} else {
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pr_err("axp80 regulator device tree err!\n");
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return -EBUSY;
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}
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regu_data = devm_kzalloc(&pdev->dev, sizeof(*regu_data),
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GFP_KERNEL);
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if (!regu_data)
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return -ENOMEM;
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regu_data->chip = axp_dev;
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platform_set_drvdata(pdev, regu_data);
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for (i = 0; i < VCC_80_MAX; i++) {
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info = &axp80_regulator_info[i];
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info->pmu_num = axp_dev->pmu_num;
|
|
regu_data->regulators[i] = axp_regulator_register(
|
|
&pdev->dev, axp_dev->regmap,
|
|
&axp_regl_init_data[i], info);
|
|
|
|
if (IS_ERR(regu_data->regulators[i])) {
|
|
dev_err(&pdev->dev,
|
|
"failed to register regulator %s\n",
|
|
info->desc.name);
|
|
while (--i >= 0)
|
|
axp_regulator_unregister(
|
|
regu_data->regulators[i]);
|
|
|
|
return -1;
|
|
}
|
|
|
|
if (info->desc.id >= AXP_DCDC_ID_START) {
|
|
ret = axp_regu_create_attrs(
|
|
®u_data->regulators[i]->dev);
|
|
if (ret)
|
|
dev_err(&pdev->dev,
|
|
"failed to register regulator attr %s\n",
|
|
info->desc.name);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int axp80_regulator_remove(struct platform_device *pdev)
|
|
{
|
|
struct axp80_regulators *regu_data = platform_get_drvdata(pdev);
|
|
int i;
|
|
|
|
for (i = 0; i < VCC_80_MAX; i++)
|
|
regulator_unregister(regu_data->regulators[i]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id axp80_regu_dt_ids[] = {
|
|
{ .compatible = "axp806-regulator", },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, axp80_regu_dt_ids);
|
|
|
|
static struct platform_driver axp80_regulator_driver = {
|
|
.driver = {
|
|
.name = "axp80-regulator",
|
|
.of_match_table = axp80_regu_dt_ids,
|
|
},
|
|
.probe = axp80_regulator_probe,
|
|
.remove = axp80_regulator_remove,
|
|
};
|
|
|
|
static int __init axp80_regulator_initcall(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = platform_driver_register(&axp80_regulator_driver);
|
|
if (IS_ERR_VALUE(ret)) {
|
|
pr_err("%s: failed, errno %d\n", __func__, ret);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
subsys_initcall(axp80_regulator_initcall);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Qin <qinyongshen@allwinnertech.com>");
|
|
MODULE_DESCRIPTION("Regulator Driver for axp80 PMIC");
|
|
MODULE_ALIAS("platform:axp80-regulator");
|