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|
/*
* Broadcom BCM590xx regulator driver
*
* Copyright 2014 Linaro Limited
* Author: Matt Porter <mporter@linaro.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/err.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/mfd/bcm590xx.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/of_regulator.h>
#include <linux/slab.h>
/* I2C slave 0 registers */
#define BCM590XX_RFLDOPMCTRL1 0x60
#define BCM590XX_IOSR1PMCTRL1 0x7a
#define BCM590XX_IOSR2PMCTRL1 0x7c
#define BCM590XX_CSRPMCTRL1 0x7e
#define BCM590XX_SDSR1PMCTRL1 0x82
#define BCM590XX_SDSR2PMCTRL1 0x86
#define BCM590XX_MSRPMCTRL1 0x8a
#define BCM590XX_VSRPMCTRL1 0x8e
#define BCM590XX_RFLDOCTRL 0x96
#define BCM590XX_CSRVOUT1 0xc0
/* I2C slave 1 registers */
#define BCM590XX_GPLDO5PMCTRL1 0x16
#define BCM590XX_GPLDO6PMCTRL1 0x18
#define BCM590XX_GPLDO1CTRL 0x1a
#define BCM590XX_GPLDO2CTRL 0x1b
#define BCM590XX_GPLDO3CTRL 0x1c
#define BCM590XX_GPLDO4CTRL 0x1d
#define BCM590XX_GPLDO5CTRL 0x1e
#define BCM590XX_GPLDO6CTRL 0x1f
#define BCM590XX_OTG_CTRL 0x40
#define BCM590XX_GPLDO1PMCTRL1 0x57
#define BCM590XX_GPLDO2PMCTRL1 0x59
#define BCM590XX_GPLDO3PMCTRL1 0x5b
#define BCM590XX_GPLDO4PMCTRL1 0x5d
#define BCM590XX_REG_ENABLE BIT(7)
#define BCM590XX_VBUS_ENABLE BIT(2)
#define BCM590XX_LDO_VSEL_MASK GENMASK(5, 3)
#define BCM590XX_SR_VSEL_MASK GENMASK(5, 0)
/*
* RFLDO to VSR regulators are
* accessed via I2C slave 0
*/
/* LDO regulator IDs */
#define BCM590XX_REG_RFLDO 0
#define BCM590XX_REG_CAMLDO1 1
#define BCM590XX_REG_CAMLDO2 2
#define BCM590XX_REG_SIMLDO1 3
#define BCM590XX_REG_SIMLDO2 4
#define BCM590XX_REG_SDLDO 5
#define BCM590XX_REG_SDXLDO 6
#define BCM590XX_REG_MMCLDO1 7
#define BCM590XX_REG_MMCLDO2 8
#define BCM590XX_REG_AUDLDO 9
#define BCM590XX_REG_MICLDO 10
#define BCM590XX_REG_USBLDO 11
#define BCM590XX_REG_VIBLDO 12
/* DCDC regulator IDs */
#define BCM590XX_REG_CSR 13
#define BCM590XX_REG_IOSR1 14
#define BCM590XX_REG_IOSR2 15
#define BCM590XX_REG_MSR 16
#define BCM590XX_REG_SDSR1 17
#define BCM590XX_REG_SDSR2 18
#define BCM590XX_REG_VSR 19
/*
* GPLDO1 to VBUS regulators are
* accessed via I2C slave 1
*/
#define BCM590XX_REG_GPLDO1 20
#define BCM590XX_REG_GPLDO2 21
#define BCM590XX_REG_GPLDO3 22
#define BCM590XX_REG_GPLDO4 23
#define BCM590XX_REG_GPLDO5 24
#define BCM590XX_REG_GPLDO6 25
#define BCM590XX_REG_VBUS 26
#define BCM590XX_NUM_REGS 27
#define BCM590XX_REG_IS_LDO(n) (n < BCM590XX_REG_CSR)
#define BCM590XX_REG_IS_GPLDO(n) \
((n > BCM590XX_REG_VSR) && (n < BCM590XX_REG_VBUS))
#define BCM590XX_REG_IS_VBUS(n) (n == BCM590XX_REG_VBUS)
struct bcm590xx_board {
struct regulator_init_data *bcm590xx_pmu_init_data[BCM590XX_NUM_REGS];
};
/* LDO group A: supported voltages in microvolts */
static const unsigned int ldo_a_table[] = {
1200000, 1800000, 2500000, 2700000, 2800000,
2900000, 3000000, 3300000,
};
/* LDO group C: supported voltages in microvolts */
static const unsigned int ldo_c_table[] = {
3100000, 1800000, 2500000, 2700000, 2800000,
2900000, 3000000, 3300000,
};
static const unsigned int ldo_vbus[] = {
5000000,
};
/* DCDC group CSR: supported voltages in microvolts */
static const struct regulator_linear_range dcdc_csr_ranges[] = {
REGULATOR_LINEAR_RANGE(860000, 2, 50, 10000),
REGULATOR_LINEAR_RANGE(1360000, 51, 55, 20000),
REGULATOR_LINEAR_RANGE(900000, 56, 63, 0),
};
/* DCDC group IOSR1: supported voltages in microvolts */
static const struct regulator_linear_range dcdc_iosr1_ranges[] = {
REGULATOR_LINEAR_RANGE(860000, 2, 51, 10000),
REGULATOR_LINEAR_RANGE(1500000, 52, 52, 0),
REGULATOR_LINEAR_RANGE(1800000, 53, 53, 0),
REGULATOR_LINEAR_RANGE(900000, 54, 63, 0),
};
/* DCDC group SDSR1: supported voltages in microvolts */
static const struct regulator_linear_range dcdc_sdsr1_ranges[] = {
REGULATOR_LINEAR_RANGE(860000, 2, 50, 10000),
REGULATOR_LINEAR_RANGE(1340000, 51, 51, 0),
REGULATOR_LINEAR_RANGE(900000, 52, 63, 0),
};
struct bcm590xx_info {
const char *name;
const char *vin_name;
u8 n_voltages;
const unsigned int *volt_table;
u8 n_linear_ranges;
const struct regulator_linear_range *linear_ranges;
};
#define BCM590XX_REG_TABLE(_name, _table) \
{ \
.name = #_name, \
.n_voltages = ARRAY_SIZE(_table), \
.volt_table = _table, \
}
#define BCM590XX_REG_RANGES(_name, _ranges) \
{ \
.name = #_name, \
.n_voltages = 64, \
.n_linear_ranges = ARRAY_SIZE(_ranges), \
.linear_ranges = _ranges, \
}
static struct bcm590xx_info bcm590xx_regs[] = {
BCM590XX_REG_TABLE(rfldo, ldo_a_table),
BCM590XX_REG_TABLE(camldo1, ldo_c_table),
BCM590XX_REG_TABLE(camldo2, ldo_c_table),
BCM590XX_REG_TABLE(simldo1, ldo_a_table),
BCM590XX_REG_TABLE(simldo2, ldo_a_table),
BCM590XX_REG_TABLE(sdldo, ldo_c_table),
BCM590XX_REG_TABLE(sdxldo, ldo_a_table),
BCM590XX_REG_TABLE(mmcldo1, ldo_a_table),
BCM590XX_REG_TABLE(mmcldo2, ldo_a_table),
BCM590XX_REG_TABLE(audldo, ldo_a_table),
BCM590XX_REG_TABLE(micldo, ldo_a_table),
BCM590XX_REG_TABLE(usbldo, ldo_a_table),
BCM590XX_REG_TABLE(vibldo, ldo_c_table),
BCM590XX_REG_RANGES(csr, dcdc_csr_ranges),
BCM590XX_REG_RANGES(iosr1, dcdc_iosr1_ranges),
BCM590XX_REG_RANGES(iosr2, dcdc_iosr1_ranges),
BCM590XX_REG_RANGES(msr, dcdc_iosr1_ranges),
BCM590XX_REG_RANGES(sdsr1, dcdc_sdsr1_ranges),
BCM590XX_REG_RANGES(sdsr2, dcdc_iosr1_ranges),
BCM590XX_REG_RANGES(vsr, dcdc_iosr1_ranges),
BCM590XX_REG_TABLE(gpldo1, ldo_a_table),
BCM590XX_REG_TABLE(gpldo2, ldo_a_table),
BCM590XX_REG_TABLE(gpldo3, ldo_a_table),
BCM590XX_REG_TABLE(gpldo4, ldo_a_table),
BCM590XX_REG_TABLE(gpldo5, ldo_a_table),
BCM590XX_REG_TABLE(gpldo6, ldo_a_table),
BCM590XX_REG_TABLE(vbus, ldo_vbus),
};
struct bcm590xx_reg {
struct regulator_desc *desc;
struct bcm590xx *mfd;
};
static int bcm590xx_get_vsel_register(int id)
{
if (BCM590XX_REG_IS_LDO(id))
return BCM590XX_RFLDOCTRL + id;
else if (BCM590XX_REG_IS_GPLDO(id))
return BCM590XX_GPLDO1CTRL + id;
else
return BCM590XX_CSRVOUT1 + (id - BCM590XX_REG_CSR) * 3;
}
static int bcm590xx_get_enable_register(int id)
{
int reg = 0;
if (BCM590XX_REG_IS_LDO(id))
reg = BCM590XX_RFLDOPMCTRL1 + id * 2;
else if (BCM590XX_REG_IS_GPLDO(id))
reg = BCM590XX_GPLDO1PMCTRL1 + id * 2;
else
switch (id) {
case BCM590XX_REG_CSR:
reg = BCM590XX_CSRPMCTRL1;
break;
case BCM590XX_REG_IOSR1:
reg = BCM590XX_IOSR1PMCTRL1;
break;
case BCM590XX_REG_IOSR2:
reg = BCM590XX_IOSR2PMCTRL1;
break;
case BCM590XX_REG_MSR:
reg = BCM590XX_MSRPMCTRL1;
break;
case BCM590XX_REG_SDSR1:
reg = BCM590XX_SDSR1PMCTRL1;
break;
case BCM590XX_REG_SDSR2:
reg = BCM590XX_SDSR2PMCTRL1;
break;
case BCM590XX_REG_VBUS:
reg = BCM590XX_OTG_CTRL;
}
return reg;
}
static const struct regulator_ops bcm590xx_ops_ldo = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.list_voltage = regulator_list_voltage_table,
.map_voltage = regulator_map_voltage_iterate,
};
static const struct regulator_ops bcm590xx_ops_dcdc = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.list_voltage = regulator_list_voltage_linear_range,
.map_voltage = regulator_map_voltage_linear_range,
};
static const struct regulator_ops bcm590xx_ops_vbus = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
};
#define BCM590XX_MATCH(_name, _id) \
{ \
.name = #_name, \
.driver_data = (void *)&bcm590xx_regs[BCM590XX_REG_##_id], \
}
static struct of_regulator_match bcm590xx_matches[] = {
BCM590XX_MATCH(rfldo, RFLDO),
BCM590XX_MATCH(camldo1, CAMLDO1),
BCM590XX_MATCH(camldo2, CAMLDO2),
BCM590XX_MATCH(simldo1, SIMLDO1),
BCM590XX_MATCH(simldo2, SIMLDO2),
BCM590XX_MATCH(sdldo, SDLDO),
BCM590XX_MATCH(sdxldo, SDXLDO),
BCM590XX_MATCH(mmcldo1, MMCLDO1),
BCM590XX_MATCH(mmcldo2, MMCLDO2),
BCM590XX_MATCH(audldo, AUDLDO),
BCM590XX_MATCH(micldo, MICLDO),
BCM590XX_MATCH(usbldo, USBLDO),
BCM590XX_MATCH(vibldo, VIBLDO),
BCM590XX_MATCH(csr, CSR),
BCM590XX_MATCH(iosr1, IOSR1),
BCM590XX_MATCH(iosr2, IOSR2),
BCM590XX_MATCH(msr, MSR),
BCM590XX_MATCH(sdsr1, SDSR1),
BCM590XX_MATCH(sdsr2, SDSR2),
BCM590XX_MATCH(vsr, VSR),
BCM590XX_MATCH(gpldo1, GPLDO1),
BCM590XX_MATCH(gpldo2, GPLDO2),
BCM590XX_MATCH(gpldo3, GPLDO3),
|