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alistair23-linux/drivers/regulator/as3722-regulator.c
Thomas Gleixner 1a59d1b8e0 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 
Based on 1 normalized pattern(s):

  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 this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details you
  should have received a copy of the gnu general public license along
  with this program if not write to the free software foundation inc
  59 temple place suite 330 boston ma 02111 1307 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1334 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:35 -07:00

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Voltage regulator support for AMS AS3722 PMIC
*
* Copyright (C) 2013 ams
*
* Author: Florian Lobmaier <florian.lobmaier@ams.com>
* Author: Laxman Dewangan <ldewangan@nvidia.com>
*/
#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mfd/as3722.h>
#include <linux/of.h>
#include <linux/of_platform.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>
/* Regulator IDs */
enum as3722_regulators_id {
AS3722_REGULATOR_ID_SD0,
AS3722_REGULATOR_ID_SD1,
AS3722_REGULATOR_ID_SD2,
AS3722_REGULATOR_ID_SD3,
AS3722_REGULATOR_ID_SD4,
AS3722_REGULATOR_ID_SD5,
AS3722_REGULATOR_ID_SD6,
AS3722_REGULATOR_ID_LDO0,
AS3722_REGULATOR_ID_LDO1,
AS3722_REGULATOR_ID_LDO2,
AS3722_REGULATOR_ID_LDO3,
AS3722_REGULATOR_ID_LDO4,
AS3722_REGULATOR_ID_LDO5,
AS3722_REGULATOR_ID_LDO6,
AS3722_REGULATOR_ID_LDO7,
AS3722_REGULATOR_ID_LDO9,
AS3722_REGULATOR_ID_LDO10,
AS3722_REGULATOR_ID_LDO11,
AS3722_REGULATOR_ID_MAX,
};
struct as3722_register_mapping {
u8 regulator_id;
const char *name;
const char *sname;
u8 vsel_reg;
u8 vsel_mask;
int n_voltages;
u32 enable_reg;
u8 enable_mask;
u32 control_reg;
u8 mode_mask;
u32 sleep_ctrl_reg;
u8 sleep_ctrl_mask;
};
struct as3722_regulator_config_data {
struct regulator_init_data *reg_init;
bool enable_tracking;
int ext_control;
};
struct as3722_regulators {
struct device *dev;
struct as3722 *as3722;
struct regulator_desc desc[AS3722_REGULATOR_ID_MAX];
struct as3722_regulator_config_data
reg_config_data[AS3722_REGULATOR_ID_MAX];
};
static const struct as3722_register_mapping as3722_reg_lookup[] = {
{
.regulator_id = AS3722_REGULATOR_ID_SD0,
.name = "as3722-sd0",
.vsel_reg = AS3722_SD0_VOLTAGE_REG,
.vsel_mask = AS3722_SD_VSEL_MASK,
.enable_reg = AS3722_SD_CONTROL_REG,
.enable_mask = AS3722_SDn_CTRL(0),
.sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
.sleep_ctrl_mask = AS3722_SD0_EXT_ENABLE_MASK,
.control_reg = AS3722_SD0_CONTROL_REG,
.mode_mask = AS3722_SD0_MODE_FAST,
},
{
.regulator_id = AS3722_REGULATOR_ID_SD1,
.name = "as3722-sd1",
.vsel_reg = AS3722_SD1_VOLTAGE_REG,
.vsel_mask = AS3722_SD_VSEL_MASK,
.enable_reg = AS3722_SD_CONTROL_REG,
.enable_mask = AS3722_SDn_CTRL(1),
.sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
.sleep_ctrl_mask = AS3722_SD1_EXT_ENABLE_MASK,
.control_reg = AS3722_SD1_CONTROL_REG,
.mode_mask = AS3722_SD1_MODE_FAST,
},
{
.regulator_id = AS3722_REGULATOR_ID_SD2,
.name = "as3722-sd2",
.sname = "vsup-sd2",
.vsel_reg = AS3722_SD2_VOLTAGE_REG,
.vsel_mask = AS3722_SD_VSEL_MASK,
.enable_reg = AS3722_SD_CONTROL_REG,
.enable_mask = AS3722_SDn_CTRL(2),
.sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
.sleep_ctrl_mask = AS3722_SD2_EXT_ENABLE_MASK,
.control_reg = AS3722_SD23_CONTROL_REG,
.mode_mask = AS3722_SD2_MODE_FAST,
.n_voltages = AS3722_SD2_VSEL_MAX + 1,
},
{
.regulator_id = AS3722_REGULATOR_ID_SD3,
.name = "as3722-sd3",
.sname = "vsup-sd3",
.vsel_reg = AS3722_SD3_VOLTAGE_REG,
.vsel_mask = AS3722_SD_VSEL_MASK,
.enable_reg = AS3722_SD_CONTROL_REG,
.enable_mask = AS3722_SDn_CTRL(3),
.sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
.sleep_ctrl_mask = AS3722_SD3_EXT_ENABLE_MASK,
.control_reg = AS3722_SD23_CONTROL_REG,
.mode_mask = AS3722_SD3_MODE_FAST,
.n_voltages = AS3722_SD2_VSEL_MAX + 1,
},
{
.regulator_id = AS3722_REGULATOR_ID_SD4,
.name = "as3722-sd4",
.sname = "vsup-sd4",
.vsel_reg = AS3722_SD4_VOLTAGE_REG,
.vsel_mask = AS3722_SD_VSEL_MASK,
.enable_reg = AS3722_SD_CONTROL_REG,
.enable_mask = AS3722_SDn_CTRL(4),
.sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG,
.sleep_ctrl_mask = AS3722_SD4_EXT_ENABLE_MASK,
.control_reg = AS3722_SD4_CONTROL_REG,
.mode_mask = AS3722_SD4_MODE_FAST,
.n_voltages = AS3722_SD2_VSEL_MAX + 1,
},
{
.regulator_id = AS3722_REGULATOR_ID_SD5,
.name = "as3722-sd5",
.sname = "vsup-sd5",
.vsel_reg = AS3722_SD5_VOLTAGE_REG,
.vsel_mask = AS3722_SD_VSEL_MASK,
.enable_reg = AS3722_SD_CONTROL_REG,
.enable_mask = AS3722_SDn_CTRL(5),
.sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG,
.sleep_ctrl_mask = AS3722_SD5_EXT_ENABLE_MASK,
.control_reg = AS3722_SD5_CONTROL_REG,
.mode_mask = AS3722_SD5_MODE_FAST,
.n_voltages = AS3722_SD2_VSEL_MAX + 1,
},
{
.regulator_id = AS3722_REGULATOR_ID_SD6,
.name = "as3722-sd6",
.vsel_reg = AS3722_SD6_VOLTAGE_REG,
.vsel_mask = AS3722_SD_VSEL_MASK,
.enable_reg = AS3722_SD_CONTROL_REG,
.enable_mask = AS3722_SDn_CTRL(6),
.sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG,
.sleep_ctrl_mask = AS3722_SD6_EXT_ENABLE_MASK,
.control_reg = AS3722_SD6_CONTROL_REG,
.mode_mask = AS3722_SD6_MODE_FAST,
},
{
.regulator_id = AS3722_REGULATOR_ID_LDO0,
.name = "as3722-ldo0",
.sname = "vin-ldo0",
.vsel_reg = AS3722_LDO0_VOLTAGE_REG,
.vsel_mask = AS3722_LDO0_VSEL_MASK,
.enable_reg = AS3722_LDOCONTROL0_REG,
.enable_mask = AS3722_LDO0_CTRL,
.sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
.sleep_ctrl_mask = AS3722_LDO0_EXT_ENABLE_MASK,
.n_voltages = AS3722_LDO0_NUM_VOLT,
},
{
.regulator_id = AS3722_REGULATOR_ID_LDO1,
.name = "as3722-ldo1",
.sname = "vin-ldo1-6",
.vsel_reg = AS3722_LDO1_VOLTAGE_REG,
.vsel_mask = AS3722_LDO_VSEL_MASK,
.enable_reg = AS3722_LDOCONTROL0_REG,
.enable_mask = AS3722_LDO1_CTRL,
.sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
.sleep_ctrl_mask = AS3722_LDO1_EXT_ENABLE_MASK,
.n_voltages = AS3722_LDO_NUM_VOLT,
},
{
.regulator_id = AS3722_REGULATOR_ID_LDO2,
.name = "as3722-ldo2",
.sname = "vin-ldo2-5-7",
.vsel_reg = AS3722_LDO2_VOLTAGE_REG,
.vsel_mask = AS3722_LDO_VSEL_MASK,
.enable_reg = AS3722_LDOCONTROL0_REG,
.enable_mask = AS3722_LDO2_CTRL,
.sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
.sleep_ctrl_mask = AS3722_LDO2_EXT_ENABLE_MASK,
.n_voltages = AS3722_LDO_NUM_VOLT,
},
{
.regulator_id = AS3722_REGULATOR_ID_LDO3,
.name = "as3722-ldo3",
.sname = "vin-ldo3-4",
.vsel_reg = AS3722_LDO3_VOLTAGE_REG,
.vsel_mask = AS3722_LDO3_VSEL_MASK,
.enable_reg = AS3722_LDOCONTROL0_REG,
.enable_mask = AS3722_LDO3_CTRL,
.sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
.sleep_ctrl_mask = AS3722_LDO3_EXT_ENABLE_MASK,
.n_voltages = AS3722_LDO3_NUM_VOLT,
},
{
.regulator_id = AS3722_REGULATOR_ID_LDO4,
.name = "as3722-ldo4",
.sname = "vin-ldo3-4",
.vsel_reg = AS3722_LDO4_VOLTAGE_REG,
.vsel_mask = AS3722_LDO_VSEL_MASK,
.enable_reg = AS3722_LDOCONTROL0_REG,
.enable_mask = AS3722_LDO4_CTRL,
.sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
.sleep_ctrl_mask = AS3722_LDO4_EXT_ENABLE_MASK,
.n_voltages = AS3722_LDO_NUM_VOLT,
},
{
.regulator_id = AS3722_REGULATOR_ID_LDO5,
.name = "as3722-ldo5",
.sname = "vin-ldo2-5-7",
.vsel_reg = AS3722_LDO5_VOLTAGE_REG,
.vsel_mask = AS3722_LDO_VSEL_MASK,
.enable_reg = AS3722_LDOCONTROL0_REG,
.enable_mask = AS3722_LDO5_CTRL,
.sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
.sleep_ctrl_mask = AS3722_LDO5_EXT_ENABLE_MASK,
.n_voltages = AS3722_LDO_NUM_VOLT,
},
{
.regulator_id = AS3722_REGULATOR_ID_LDO6,
.name = "as3722-ldo6",
.sname = "vin-ldo1-6",
.vsel_reg = AS3722_LDO6_VOLTAGE_REG,
.vsel_mask = AS3722_LDO_VSEL_MASK,
.enable_reg = AS3722_LDOCONTROL0_REG,
.enable_mask = AS3722_LDO6_CTRL,
.sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
.sleep_ctrl_mask = AS3722_LDO6_EXT_ENABLE_MASK,
.n_voltages = AS3722_LDO_NUM_VOLT,
},
{
.regulator_id = AS3722_REGULATOR_ID_LDO7,
.name = "as3722-ldo7",
.sname = "vin-ldo2-5-7",
.vsel_reg = AS3722_LDO7_VOLTAGE_REG,
.vsel_mask = AS3722_LDO_VSEL_MASK,
.enable_reg = AS3722_LDOCONTROL0_REG,
.enable_mask = AS3722_LDO7_CTRL,
.sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
.sleep_ctrl_mask = AS3722_LDO7_EXT_ENABLE_MASK,
.n_voltages = AS3722_LDO_NUM_VOLT,
},
{
.regulator_id = AS3722_REGULATOR_ID_LDO9,
.name = "as3722-ldo9",
.sname = "vin-ldo9-10",
.vsel_reg = AS3722_LDO9_VOLTAGE_REG,
.vsel_mask = AS3722_LDO_VSEL_MASK,
.enable_reg = AS3722_LDOCONTROL1_REG,
.enable_mask = AS3722_LDO9_CTRL,
.sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG,
.sleep_ctrl_mask = AS3722_LDO9_EXT_ENABLE_MASK,
.n_voltages = AS3722_LDO_NUM_VOLT,
},
{
.regulator_id = AS3722_REGULATOR_ID_LDO10,
.name = "as3722-ldo10",
.sname = "vin-ldo9-10",
.vsel_reg = AS3722_LDO10_VOLTAGE_REG,
.vsel_mask = AS3722_LDO_VSEL_MASK,
.enable_reg = AS3722_LDOCONTROL1_REG,
.enable_mask = AS3722_LDO10_CTRL,
.sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG,
.sleep_ctrl_mask = AS3722_LDO10_EXT_ENABLE_MASK,
.n_voltages = AS3722_LDO_NUM_VOLT,
},
{
.regulator_id = AS3722_REGULATOR_ID_LDO11,
.name = "as3722-ldo11",
.sname = "vin-ldo11",
.vsel_reg = AS3722_LDO11_VOLTAGE_REG,
.vsel_mask = AS3722_LDO_VSEL_MASK,
.enable_reg = AS3722_LDOCONTROL1_REG,
.enable_mask = AS3722_LDO11_CTRL,
.sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG,
.sleep_ctrl_mask = AS3722_LDO11_EXT_ENABLE_MASK,
.n_voltages = AS3722_LDO_NUM_VOLT,
},
};
static const unsigned int as3722_ldo_current[] = { 150000, 300000 };
static const unsigned int as3722_sd016_current[] = {
2500000, 3000000, 3500000
};
static const struct regulator_ops as3722_ldo0_ops = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.list_voltage = regulator_list_voltage_linear,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_current_limit = regulator_get_current_limit_regmap,
.set_current_limit = regulator_set_current_limit_regmap,
};
static const struct regulator_ops as3722_ldo0_extcntrl_ops = {
.list_voltage = regulator_list_voltage_linear,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_current_limit = regulator_get_current_limit_regmap,
.set_current_limit = regulator_set_current_limit_regmap,
};
static int as3722_ldo3_set_tracking_mode(struct as3722_regulators *as3722_reg,
int id, u8 mode)
{
struct as3722 *as3722 = as3722_reg->as3722;
switch (mode) {
case AS3722_LDO3_MODE_PMOS:
case AS3722_LDO3_MODE_PMOS_TRACKING:
case AS3722_LDO3_MODE_NMOS:
case AS3722_LDO3_MODE_SWITCH:
return as3722_update_bits(as3722,
as3722_reg_lookup[id].vsel_reg,
AS3722_LDO3_MODE_MASK, mode);
default:
return -EINVAL;
}
}
static int as3722_ldo3_get_current_limit(struct regulator_dev *rdev)
{
return 150000;
}
static const struct regulator_ops as3722_ldo3_ops = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.list_voltage = regulator_list_voltage_linear,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_current_limit = as3722_ldo3_get_current_limit,
};
static const struct regulator_ops as3722_ldo3_extcntrl_ops = {
.list_voltage = regulator_list_voltage_linear,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_current_limit = as3722_ldo3_get_current_limit,
};
static const struct regulator_ops as3722_ldo6_ops = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.map_voltage = regulator_map_voltage_linear_range,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.list_voltage = regulator_list_voltage_linear_range,
.get_current_limit = regulator_get_current_limit_regmap,
.set_current_limit = regulator_set_current_limit_regmap,
.get_bypass = regulator_get_bypass_regmap,
.set_bypass = regulator_set_bypass_regmap,
};
static const struct regulator_ops as3722_ldo6_extcntrl_ops = {
.map_voltage = regulator_map_voltage_linear_range,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.list_voltage = regulator_list_voltage_linear_range,
.get_current_limit = regulator_get_current_limit_regmap,
.set_current_limit = regulator_set_current_limit_regmap,
.get_bypass = regulator_get_bypass_regmap,
.set_bypass = regulator_set_bypass_regmap,
};
static const struct regulator_linear_range as3722_ldo_ranges[] = {
REGULATOR_LINEAR_RANGE(0, 0x00, 0x00, 0),
REGULATOR_LINEAR_RANGE(825000, 0x01, 0x24, 25000),
REGULATOR_LINEAR_RANGE(1725000, 0x40, 0x7F, 25000),
};
static const struct regulator_ops as3722_ldo_ops = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.map_voltage = regulator_map_voltage_linear_range,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.list_voltage = regulator_list_voltage_linear_range,
.get_current_limit = regulator_get_current_limit_regmap,
.set_current_limit = regulator_set_current_limit_regmap,
};
static const struct regulator_ops as3722_ldo_extcntrl_ops = {
.map_voltage = regulator_map_voltage_linear_range,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.list_voltage = regulator_list_voltage_linear_range,
.get_current_limit = regulator_get_current_limit_regmap,
.set_current_limit = regulator_set_current_limit_regmap,
};
static unsigned int as3722_sd_get_mode(struct regulator_dev *rdev)
{
struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev);
struct as3722 *as3722 = as3722_regs->as3722;
int id = rdev_get_id(rdev);
u32 val;
int ret;
if (!as3722_reg_lookup[id].control_reg)
return -ENOTSUPP;
ret = as3722_read(as3722, as3722_reg_lookup[id].control_reg, &val);
if (ret < 0) {
dev_err(as3722_regs->dev, "Reg 0x%02x read failed: %d\n",
as3722_reg_lookup[id].control_reg, ret);
return ret;
}
if (val & as3722_reg_lookup[id].mode_mask)
return REGULATOR_MODE_FAST;
else
return REGULATOR_MODE_NORMAL;
}
static int as3722_sd_set_mode(struct regulator_dev *rdev,
unsigned int mode)
{
struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev);
struct as3722 *as3722 = as3722_regs->as3722;
u8 id = rdev_get_id(rdev);
u8 val = 0;
int ret;
if (!as3722_reg_lookup[id].control_reg)
return -ERANGE;
switch (mode) {
case REGULATOR_MODE_FAST:
val = as3722_reg_lookup[id].mode_mask;
case REGULATOR_MODE_NORMAL: /* fall down */
break;
default:
return -EINVAL;
}
ret = as3722_update_bits(as3722, as3722_reg_lookup[id].control_reg,
as3722_reg_lookup[id].mode_mask, val);
if (ret < 0) {
dev_err(as3722_regs->dev, "Reg 0x%02x update failed: %d\n",
as3722_reg_lookup[id].control_reg, ret);
return ret;
}
return ret;
}
static bool as3722_sd0_is_low_voltage(struct as3722_regulators *as3722_regs)
{
int err;
unsigned val;
err = as3722_read(as3722_regs->as3722, AS3722_FUSE7_REG, &val);
if (err < 0) {
dev_err(as3722_regs->dev, "Reg 0x%02x read failed: %d\n",
AS3722_FUSE7_REG, err);
return false;
}
if (val & AS3722_FUSE7_SD0_LOW_VOLTAGE)
return true;
return false;
}
static const struct regulator_linear_range as3722_sd2345_ranges[] = {
REGULATOR_LINEAR_RANGE(0, 0x00, 0x00, 0),
REGULATOR_LINEAR_RANGE(612500, 0x01, 0x40, 12500),
REGULATOR_LINEAR_RANGE(1425000, 0x41, 0x70, 25000),
REGULATOR_LINEAR_RANGE(2650000, 0x71, 0x7F, 50000),
};
static const struct regulator_ops as3722_sd016_ops = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.list_voltage = regulator_list_voltage_linear,
.map_voltage = regulator_map_voltage_linear,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_current_limit = regulator_get_current_limit_regmap,
.set_current_limit = regulator_set_current_limit_regmap,
.get_mode = as3722_sd_get_mode,
.set_mode = as3722_sd_set_mode,
};
static const struct regulator_ops as3722_sd016_extcntrl_ops = {
.list_voltage = regulator_list_voltage_linear,
.map_voltage = regulator_map_voltage_linear,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_current_limit = regulator_get_current_limit_regmap,
.set_current_limit = regulator_set_current_limit_regmap,
.get_mode = as3722_sd_get_mode,
.set_mode = as3722_sd_set_mode,
};
static const struct regulator_ops as3722_sd2345_ops = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.list_voltage = regulator_list_voltage_linear_range,
.map_voltage = regulator_map_voltage_linear_range,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.get_mode = as3722_sd_get_mode,
.set_mode = as3722_sd_set_mode,
};
static const struct regulator_ops as3722_sd2345_extcntrl_ops = {
.list_voltage = regulator_list_voltage_linear_range,
.map_voltage = regulator_map_voltage_linear_range,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.get_mode = as3722_sd_get_mode,
.set_mode = as3722_sd_set_mode,
};
static int as3722_extreg_init(struct as3722_regulators *as3722_regs, int id,
int ext_pwr_ctrl)
{
int ret;
unsigned int val;
if ((ext_pwr_ctrl < AS3722_EXT_CONTROL_ENABLE1) ||
(ext_pwr_ctrl > AS3722_EXT_CONTROL_ENABLE3))
return -EINVAL;
val = ext_pwr_ctrl << (ffs(as3722_reg_lookup[id].sleep_ctrl_mask) - 1);
ret = as3722_update_bits(as3722_regs->as3722,
as3722_reg_lookup[id].sleep_ctrl_reg,
as3722_reg_lookup[id].sleep_ctrl_mask, val);
if (ret < 0)
dev_err(as3722_regs->dev, "Reg 0x%02x update failed: %d\n",
as3722_reg_lookup[id].sleep_ctrl_reg, ret);
return ret;
}
static struct of_regulator_match as3722_regulator_matches[] = {
{ .name = "sd0", },
{ .name = "sd1", },
{ .name = "sd2", },
{ .name = "sd3", },
{ .name = "sd4", },
{ .name = "sd5", },
{ .name = "sd6", },
{ .name = "ldo0", },
{ .name = "ldo1", },
{ .name = "ldo2", },
{ .name = "ldo3", },
{ .name = "ldo4", },
{ .name = "ldo5", },
{ .name = "ldo6", },
{ .name = "ldo7", },
{ .name = "ldo9", },
{ .name = "ldo10", },
{ .name = "ldo11", },
};
static int as3722_get_regulator_dt_data(struct platform_device *pdev,
struct as3722_regulators *as3722_regs)
{
struct device_node *np;
struct as3722_regulator_config_data *reg_config;
u32 prop;
int id;
int ret;
np = of_get_child_by_name(pdev->dev.parent->of_node, "regulators");
if (!np) {
dev_err(&pdev->dev, "Device is not having regulators node\n");
return -ENODEV;
}
pdev->dev.of_node = np;
ret = of_regulator_match(&pdev->dev, np, as3722_regulator_matches,
ARRAY_SIZE(as3722_regulator_matches));
of_node_put(np);
if (ret < 0) {
dev_err(&pdev->dev, "Parsing of regulator node failed: %d\n",
ret);
return ret;
}
for (id = 0; id < ARRAY_SIZE(as3722_regulator_matches); ++id) {
struct device_node *reg_node;
reg_config = &as3722_regs->reg_config_data[id];
reg_config->reg_init = as3722_regulator_matches[id].init_data;
reg_node = as3722_regulator_matches[id].of_node;
if (!reg_config->reg_init || !reg_node)
continue;
ret = of_property_read_u32(reg_node, "ams,ext-control", &prop);
if (!ret) {
if (prop < 3)
reg_config->ext_control = prop;
else
dev_warn(&pdev->dev,
"ext-control have invalid option: %u\n",
prop);
}
reg_config->enable_tracking =
of_property_read_bool(reg_node, "ams,enable-tracking");
}
return 0;
}
static int as3722_regulator_probe(struct platform_device *pdev)
{
struct as3722 *as3722 = dev_get_drvdata(pdev->dev.parent);
struct as3722_regulators *as3722_regs;
struct as3722_regulator_config_data *reg_config;
struct regulator_dev *rdev;
struct regulator_config config = { };
const struct regulator_ops *ops;
int id;
int ret;
as3722_regs = devm_kzalloc(&pdev->dev, sizeof(*as3722_regs),
GFP_KERNEL);
if (!as3722_regs)
return -ENOMEM;
as3722_regs->dev = &pdev->dev;
as3722_regs->as3722 = as3722;
platform_set_drvdata(pdev, as3722_regs);
ret = as3722_get_regulator_dt_data(pdev, as3722_regs);
if (ret < 0)
return ret;
config.dev = &pdev->dev;
config.driver_data = as3722_regs;
config.regmap = as3722->regmap;
for (id = 0; id < AS3722_REGULATOR_ID_MAX; id++) {
struct regulator_desc *desc;
desc = &as3722_regs->desc[id];
reg_config = &as3722_regs->reg_config_data[id];
desc->name = as3722_reg_lookup[id].name;
desc->supply_name = as3722_reg_lookup[id].sname;
desc->id = as3722_reg_lookup[id].regulator_id;
desc->n_voltages = as3722_reg_lookup[id].n_voltages;
desc->type = REGULATOR_VOLTAGE;
desc->owner = THIS_MODULE;
desc->enable_reg = as3722_reg_lookup[id].enable_reg;
desc->enable_mask = as3722_reg_lookup[id].enable_mask;
desc->vsel_reg = as3722_reg_lookup[id].vsel_reg;
desc->vsel_mask = as3722_reg_lookup[id].vsel_mask;
switch (id) {
case AS3722_REGULATOR_ID_LDO0:
if (reg_config->ext_control)
ops = &as3722_ldo0_extcntrl_ops;
else
ops = &as3722_ldo0_ops;
desc->min_uV = 825000;
desc->uV_step = 25000;
desc->linear_min_sel = 1;
desc->enable_time = 500;
desc->curr_table = as3722_ldo_current;
desc->n_current_limits = ARRAY_SIZE(as3722_ldo_current);
desc->csel_reg = as3722_reg_lookup[id].vsel_reg;
desc->csel_mask = AS3722_LDO_ILIMIT_MASK;
break;
case AS3722_REGULATOR_ID_LDO3:
if (reg_config->ext_control)
ops = &as3722_ldo3_extcntrl_ops;
else
ops = &as3722_ldo3_ops;
desc->min_uV = 620000;
desc->uV_step = 20000;
desc->linear_min_sel = 1;
desc->enable_time = 500;
if (reg_config->enable_tracking) {
ret = as3722_ldo3_set_tracking_mode(as3722_regs,
id, AS3722_LDO3_MODE_PMOS_TRACKING);
if (ret < 0) {
dev_err(&pdev->dev,
"LDO3 tracking failed: %d\n",
ret);
return ret;
}
}
break;
case AS3722_REGULATOR_ID_LDO6:
if (reg_config->ext_control)
ops = &as3722_ldo6_extcntrl_ops;
else
ops = &as3722_ldo6_ops;
desc->enable_time = 500;
desc->bypass_reg = AS3722_LDO6_VOLTAGE_REG;
desc->bypass_mask = AS3722_LDO_VSEL_MASK;
desc->bypass_val_on = AS3722_LDO6_VSEL_BYPASS;
desc->bypass_val_off = AS3722_LDO6_VSEL_BYPASS;
desc->linear_ranges = as3722_ldo_ranges;
desc->n_linear_ranges = ARRAY_SIZE(as3722_ldo_ranges);
desc->curr_table = as3722_ldo_current;
desc->n_current_limits = ARRAY_SIZE(as3722_ldo_current);
desc->csel_reg = as3722_reg_lookup[id].vsel_reg;
desc->csel_mask = AS3722_LDO_ILIMIT_MASK;
break;
case AS3722_REGULATOR_ID_SD0:
case AS3722_REGULATOR_ID_SD1:
case AS3722_REGULATOR_ID_SD6:
if (reg_config->ext_control)
ops = &as3722_sd016_extcntrl_ops;
else
ops = &as3722_sd016_ops;
if (id == AS3722_REGULATOR_ID_SD0 &&
as3722_sd0_is_low_voltage(as3722_regs)) {
as3722_regs->desc[id].n_voltages =
AS3722_SD0_VSEL_LOW_VOL_MAX + 1;
as3722_regs->desc[id].min_uV = 410000;
} else {
as3722_regs->desc[id].n_voltages =
AS3722_SD0_VSEL_MAX + 1;
as3722_regs->desc[id].min_uV = 610000;
}
desc->uV_step = 10000;
desc->linear_min_sel = 1;
desc->enable_time = 600;
desc->curr_table = as3722_sd016_current;
desc->n_current_limits =
ARRAY_SIZE(as3722_sd016_current);
if (id == AS3722_REGULATOR_ID_SD0) {
desc->csel_reg = AS3722_OVCURRENT_REG;
desc->csel_mask =
AS3722_OVCURRENT_SD0_TRIP_MASK;
} else if (id == AS3722_REGULATOR_ID_SD1) {
desc->csel_reg = AS3722_OVCURRENT_REG;
desc->csel_mask =
AS3722_OVCURRENT_SD1_TRIP_MASK;
} else if (id == AS3722_REGULATOR_ID_SD6) {
desc->csel_reg = AS3722_OVCURRENT_DEB_REG;
desc->csel_mask =
AS3722_OVCURRENT_SD6_TRIP_MASK;
}
break;
case AS3722_REGULATOR_ID_SD2:
case AS3722_REGULATOR_ID_SD3:
case AS3722_REGULATOR_ID_SD4:
case AS3722_REGULATOR_ID_SD5:
if (reg_config->ext_control)
ops = &as3722_sd2345_extcntrl_ops;
else
ops = &as3722_sd2345_ops;
desc->linear_ranges = as3722_sd2345_ranges;
desc->n_linear_ranges =
ARRAY_SIZE(as3722_sd2345_ranges);
break;
default:
if (reg_config->ext_control)
ops = &as3722_ldo_extcntrl_ops;
else
ops = &as3722_ldo_ops;
desc->enable_time = 500;
desc->linear_ranges = as3722_ldo_ranges;
desc->n_linear_ranges = ARRAY_SIZE(as3722_ldo_ranges);
desc->curr_table = as3722_ldo_current;
desc->n_current_limits = ARRAY_SIZE(as3722_ldo_current);
desc->csel_reg = as3722_reg_lookup[id].vsel_reg;
desc->csel_mask = AS3722_LDO_ILIMIT_MASK;
break;
}
desc->ops = ops;
config.init_data = reg_config->reg_init;
config.of_node = as3722_regulator_matches[id].of_node;
rdev = devm_regulator_register(&pdev->dev, desc, &config);
if (IS_ERR(rdev)) {
ret = PTR_ERR(rdev);
dev_err(&pdev->dev, "regulator %d register failed %d\n",
id, ret);
return ret;
}
if (reg_config->ext_control) {
ret = regulator_enable_regmap(rdev);
if (ret < 0) {
dev_err(&pdev->dev,
"Regulator %d enable failed: %d\n",
id, ret);
return ret;
}
ret = as3722_extreg_init(as3722_regs, id,
reg_config->ext_control);
if (ret < 0) {
dev_err(&pdev->dev,
"AS3722 ext control failed: %d", ret);
return ret;
}
}
}
return 0;
}
static const struct of_device_id of_as3722_regulator_match[] = {
{ .compatible = "ams,as3722-regulator", },
{},
};
MODULE_DEVICE_TABLE(of, of_as3722_regulator_match);
static struct platform_driver as3722_regulator_driver = {
.driver = {
.name = "as3722-regulator",
.of_match_table = of_as3722_regulator_match,
},
.probe = as3722_regulator_probe,
};
module_platform_driver(as3722_regulator_driver);
MODULE_ALIAS("platform:as3722-regulator");
MODULE_DESCRIPTION("AS3722 regulator driver");
MODULE_AUTHOR("Florian Lobmaier <florian.lobmaier@ams.com>");
MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
MODULE_LICENSE("GPL");
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