1
0
Fork 0

rM2: regulator: Copy the rM2 max77818-regulator driver

Copy the rM2 zero-sugar branch
(https://github.com/reMarkable/linux/tree/zero-sugar) to the new kernel.

Signed-off-by: Alistair Francis <alistair@alistair23.me>
5.4-rM2-2.2.x-imx-deep-sleep
Alistair Francis 2021-02-07 09:49:14 -08:00
parent 953298a715
commit 3b4900abbe
3 changed files with 123 additions and 0 deletions

View File

@ -580,6 +580,13 @@ config REGULATOR_MAX77802
Exynos5420/Exynos5800 SoCs to control various voltages.
It includes support for control of voltage and ramp speed.
config REGULATOR_MAX77818
tristate "Maxim MAX77818 voltage regulator"
depends on MFD_MAX77818
depends on I2C
help
Say y here to support the regulator found in the Maxime Semiconductor MAX77818 multi-function device
config REGULATOR_MC13XXX_CORE
tristate

View File

@ -75,6 +75,7 @@ obj-$(CONFIG_REGULATOR_MAX8998) += max8998.o
obj-$(CONFIG_REGULATOR_MAX77686) += max77686-regulator.o
obj-$(CONFIG_REGULATOR_MAX77693) += max77693-regulator.o
obj-$(CONFIG_REGULATOR_MAX77802) += max77802-regulator.o
obj-$(CONFIG_REGULATOR_MAX77818) += max77818-regulator.o
obj-$(CONFIG_REGULATOR_MC13783) += mc13783-regulator.o
obj-$(CONFIG_REGULATOR_MC13892) += mc13892-regulator.o
obj-$(CONFIG_REGULATOR_MC13XXX_CORE) += mc13xxx-regulator-core.o

View File

@ -0,0 +1,115 @@
/*
* Copyright (c) 2014, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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.
*
* This driver is based on max77823-regulator.c
*/
#include <linux/version.h>
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regmap.h>
#include <linux/mfd/max77818/max77818.h>
#include <linux/module.h>
#include <linux/regulator/of_regulator.h>
#include <linux/of.h>
#define REG_SAFEOUTCTRL 0xC6
#define BIT_SAFEOUT1 GENMASK(1, 0)
#define BIT_SAFEOUT2 GENMASK(3, 2)
#define BIT_ACTDISSAFEO1 BIT(4)
#define BIT_ACTDISSAFEO2 BIT(5)
#define BIT_ENSAFEOUT1 BIT(6)
#define BIT_ENSAFEOUT2 BIT(7)
/* MAX77818 regulator IDs */
enum max77818_regulators {
MAX77818_SAFEOUT1 = 0,
MAX77818_SAFEOUT2,
};
const static unsigned int max77818_safeout_volt_table[] =
{
4850000, 4900000, 4950000, 3300000,
};
static struct regulator_ops max77818_safeout_ops = {
.list_voltage = regulator_list_voltage_table,
.map_voltage = regulator_map_voltage_ascend,
.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,
};
#define REGULATOR_DESC_SFO(num, vsel_m, enable_m) { \
.name = "SAFEOUT"#num, \
.of_match = of_match_ptr("SAFEOUT"#num), \
.regulators_node = of_match_ptr("regulators"), \
.id = MAX77818_SAFEOUT##num, \
.ops = &max77818_safeout_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.n_voltages = ARRAY_SIZE(max77818_safeout_volt_table), \
.volt_table = max77818_safeout_volt_table, \
.vsel_reg = REG_SAFEOUTCTRL, \
.vsel_mask = (vsel_m), \
.enable_reg = REG_SAFEOUTCTRL, \
.enable_mask = (enable_m), \
}
static const struct regulator_desc max77818_safeout_descs[] = {
REGULATOR_DESC_SFO(1, BIT_SAFEOUT1, BIT_ENSAFEOUT1),
REGULATOR_DESC_SFO(2, BIT_SAFEOUT2, BIT_ENSAFEOUT2),
};
static int max77818_regulator_probe(struct platform_device *pdev)
{
struct max77818_dev *max77818 = dev_get_drvdata(pdev->dev.parent);
struct regulator_config config = {};
struct device *dev = &pdev->dev;
int i, ret;
config.dev = max77818->dev;
config.driver_data = max77818;
config.regmap = max77818->regmap_pmic;
for (i = 0; i < ARRAY_SIZE(max77818_safeout_descs); i++) {
struct regulator_dev *rdev;
rdev = devm_regulator_register(dev, &max77818_safeout_descs[i],
&config);
if (IS_ERR(rdev)) {
ret = PTR_ERR(rdev);
dev_err(dev, "regulator init failed for %s: %d\n",
max77818_safeout_descs[i].name, ret);
return ret;
}
}
return 0;
}
static struct platform_driver max77818_regulator_driver = {
.driver = {
.name = MAX77818_REGULATOR_NAME,
.owner = THIS_MODULE,
},
.probe = max77818_regulator_probe,
};
module_platform_driver(max77818_regulator_driver);
MODULE_AUTHOR("TaiEup Kim<clark.kim@maximintegrated.com>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("MAXIM 77818 Regulator Driver");