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regulator: s2mps11: Add samsung s2mps11 regulator driver
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This patch add Samsung S2MPS11 regulator driver.
The S2MPS11 can support 10 Bucks and 38 LDOs and RTC.
Especially, S2MPS11 is designed for high performance
Samsung application processor.

Signed-off-by: Sangbeom Kim <sbkim73@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Sangbeom Kim authored and Mark Brown committed Jul 11, 2012
1 parent 7be5318 commit cb74685
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8 changes: 8 additions & 0 deletions drivers/regulator/Kconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -256,6 +256,14 @@ config REGULATOR_RC5T583
through regulator interface. The device supports multiple DCDC/LDO
outputs which can be controlled by i2c communication.

config REGULATOR_S2MPS11
tristate "Samsung S2MPS11 voltage regulator"
depends on MFD_SEC_CORE
help
This driver supports a Samsung S2MPS11 voltage output regulator
via I2C bus. S2MPS11 is comprised of high efficient Buck converters
including Dual-Phase Buck converter, Buck-Boost converter, various LDOs.

config REGULATOR_S5M8767
tristate "Samsung S5M8767A voltage regulator"
depends on MFD_S5M_CORE
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1 change: 1 addition & 0 deletions drivers/regulator/Makefile
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Expand Up @@ -40,6 +40,7 @@ obj-$(CONFIG_REGULATOR_PALMAS) += palmas-regulator.o
obj-$(CONFIG_REGULATOR_PCAP) += pcap-regulator.o
obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o
obj-$(CONFIG_REGULATOR_RC5T583) += rc5t583-regulator.o
obj-$(CONFIG_REGULATOR_S2MPS11) += s2mps11.o
obj-$(CONFIG_REGULATOR_S5M8767) += s5m8767.o
obj-$(CONFIG_REGULATOR_TPS6105X) += tps6105x-regulator.o
obj-$(CONFIG_REGULATOR_TPS62360) += tps62360-regulator.o
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368 changes: 368 additions & 0 deletions drivers/regulator/s2mps11.c
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@@ -0,0 +1,368 @@
/*
* s2mps11.c
*
* Copyright (c) 2012 Samsung Electronics Co., Ltd
* http://www.samsung.com
*
* 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/bug.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/mfd/samsung/core.h>
#include <linux/mfd/samsung/s2mps11.h>

struct s2mps11_info {
struct device *dev;
struct sec_pmic_dev *iodev;
struct regulator_dev **rdev;

int ramp_delay2;
int ramp_delay34;
int ramp_delay5;
int ramp_delay16;
int ramp_delay7810;
int ramp_delay9;

bool buck6_ramp;
bool buck2_ramp;
bool buck3_ramp;
bool buck4_ramp;
};

static int get_ramp_delay(int ramp_delay)
{
unsigned char cnt = 0;

ramp_delay /= 6;

while (true) {
ramp_delay = ramp_delay >> 1;
if (ramp_delay == 0)
break;
cnt++;
}
return cnt;
}

static struct regulator_ops s2mps11_ldo_ops = {
.list_voltage = regulator_list_voltage_linear,
.map_voltage = regulator_map_voltage_linear,
.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,
.set_voltage_time_sel = regulator_set_voltage_time_sel,
};

static struct regulator_ops s2mps11_buck_ops = {
.list_voltage = regulator_list_voltage_linear,
.map_voltage = regulator_map_voltage_linear,
.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,
.set_voltage_time_sel = regulator_set_voltage_time_sel,
};

#define regulator_desc_ldo1(num) { \
.name = "LDO"#num, \
.id = S2MPS11_LDO##num, \
.ops = &s2mps11_ldo_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.min_uV = S2MPS11_LDO_MIN, \
.uV_step = S2MPS11_LDO_STEP1, \
.n_voltages = S2MPS11_LDO_N_VOLTAGES, \
.vsel_reg = S2MPS11_REG_L1CTRL + num - 1, \
.vsel_mask = S2MPS11_LDO_VSEL_MASK \
.enable_reg = S2MPS11_REG_L1CTRL + num - 1, \
.enable_mask = S2MPS11_ENABLE_MASK \
}
#define regulator_desc_ldo2(num) { \
.name = "LDO"#num, \
.id = S2MPS11_LDO##num, \
.ops = &s2mps11_ldo_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.min_uV = S2MPS11_LDO_MIN, \
.uV_step = S2MPS11_LDO_STEP2, \
.n_voltages = S2MPS11_LDO_N_VOLTAGES, \
.vsel_reg = S2MPS11_REG_L1CTRL + num - 1, \
.vsel_mask = S2MPS11_LDO_VSEL_MASK \
.enable_reg = S2MPS11_REG_L1CTRL + num - 1, \
.enable_mask = S2MPS11_ENABLE_MASK \
}

#define regulator_desc_buck1_4(num) { \
.name = "BUCK"#num, \
.id = S2MPS11_BUCK##num, \
.ops = &s2mps11_buck_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.min_uV = S2MPS11_BUCK_MIN1, \
.uV_step = S2MPS11_BUCK_STEP1, \
.n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
.vsel_reg = S2MPS11_REG_B1CTRL2 + (num - 1) * 2, \
.vsel_mask = S2MPS11_BUCK_VSEL_MASK \
.enable_reg = S2MPS11_REG_B1CTRL1 + (num - 1) * 2, \
.enable_mask = S2MPS11_ENABLE_MASK \
}

#define regulator_desc_buck5 { \
.name = "BUCK5", \
.id = S2MPS11_BUCK5, \
.ops = &s2mps11_buck_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.min_uV = S2MPS11_BUCK_MIN1, \
.uV_step = S2MPS11_BUCK_STEP1, \
.n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
.vsel_reg = S2MPS11_REG_B5CTRL2, \
.vsel_mask = S2MPS11_BUCK_VSEL_MASK \
.enable_reg = S2MPS11_REG_B5CTRL1, \
.enable_mask = S2MPS11_ENABLE_MASK \
}

#define regulator_desc_buck6_8(num) { \
.name = "BUCK"#num, \
.id = S2MPS11_BUCK##num, \
.ops = &s2mps11_buck_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.min_uV = S2MPS11_BUCK_MIN1, \
.uV_step = S2MPS11_BUCK_STEP1, \
.n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
.vsel_reg = S2MPS11_REG_B6CTRL2 + (num - 6) * 2, \
.vsel_mask = S2MPS11_BUCK_VSEL_MASK \
.enable_reg = S2MPS11_REG_B6CTRL1 + (num - 6) * 2, \
.enable_mask = S2MPS11_ENABLE_MASK \
}

#define regulator_desc_buck9 { \
.name = "BUCK9", \
.id = S2MPS11_BUCK9, \
.ops = &s2mps11_buck_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.min_uV = S2MPS11_BUCK_MIN3, \
.uV_step = S2MPS11_BUCK_STEP3, \
.n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
.vsel_reg = S2MPS11_REG_B9CTRL2, \
.vsel_mask = S2MPS11_BUCK_VSEL_MASK \
.enable_reg = S2MPS11_REG_B9CTRL1, \
.enable_mask = S2MPS11_ENABLE_MASK \
}

#define regulator_desc_buck10 { \
.name = "BUCK10", \
.id = S2MPS11_BUCK10, \
.ops = &s2mps11_buck_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.min_uV = S2MPS11_BUCK_MIN2, \
.uV_step = S2MPS11_BUCK_STEP2, \
.n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
.vsel_reg = S2MPS11_REG_B9CTRL2, \
.vsel_mask = S2MPS11_BUCK_VSEL_MASK \
.enable_reg = S2MPS11_REG_B9CTRL1, \
.enable_mask = S2MPS11_ENABLE_MASK \
}

static struct regulator_desc regulators[] = {
regulator_desc_ldo2(1),
regulator_desc_ldo1(2),
regulator_desc_ldo1(3),
regulator_desc_ldo1(4),
regulator_desc_ldo1(5),
regulator_desc_ldo2(6),
regulator_desc_ldo1(7),
regulator_desc_ldo1(8),
regulator_desc_ldo1(9),
regulator_desc_ldo1(10),
regulator_desc_ldo2(11),
regulator_desc_ldo1(12),
regulator_desc_ldo1(13),
regulator_desc_ldo1(14),
regulator_desc_ldo1(15),
regulator_desc_ldo1(16),
regulator_desc_ldo1(17),
regulator_desc_ldo1(18),
regulator_desc_ldo1(19),
regulator_desc_ldo1(20),
regulator_desc_ldo1(21),
regulator_desc_ldo2(22),
regulator_desc_ldo2(23),
regulator_desc_ldo1(24),
regulator_desc_ldo1(25),
regulator_desc_ldo1(26),
regulator_desc_ldo2(27),
regulator_desc_ldo1(28),
regulator_desc_ldo1(29),
regulator_desc_ldo1(30),
regulator_desc_ldo1(31),
regulator_desc_ldo1(32),
regulator_desc_ldo1(33),
regulator_desc_ldo1(34),
regulator_desc_ldo1(35),
regulator_desc_ldo1(36),
regulator_desc_ldo1(37),
regulator_desc_ldo1(38),
regulator_desc_buck1_4(1),
regulator_desc_buck1_4(2),
regulator_desc_buck1_4(3),
regulator_desc_buck1_4(4),
regulator_desc_buck5,
regulator_desc_buck6_8(6),
regulator_desc_buck6_8(7),
regulator_desc_buck6_8(8),
regulator_desc_buck9,
regulator_desc_buck10,
};

static __devinit int s2mps11_pmic_probe(struct platform_device *pdev)
{
struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
struct sec_platform_data *pdata = dev_get_platdata(iodev->dev);
struct regulator_config config = { };
struct regulator_dev **rdev;
struct s2mps11_info *s2mps11;
int i, ret, size;
unsigned char ramp_enable, ramp_reg = 0;

if (!pdata) {
dev_err(pdev->dev.parent, "Platform data not supplied\n");
return -ENODEV;
}

s2mps11 = devm_kzalloc(&pdev->dev, sizeof(struct s2mps11_info),
GFP_KERNEL);
if (!s2mps11)
return -ENOMEM;

size = sizeof(struct regulator_dev *) * S2MPS11_REGULATOR_MAX;
s2mps11->rdev = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
if (!s2mps11->rdev) {
return -ENOMEM;
}

rdev = s2mps11->rdev;
config.dev = &pdev->dev;
config.regmap = iodev->regmap;
platform_set_drvdata(pdev, s2mps11);

s2mps11->ramp_delay2 = pdata->buck2_ramp_delay;
s2mps11->ramp_delay34 = pdata->buck34_ramp_delay;
s2mps11->ramp_delay5 = pdata->buck5_ramp_delay;
s2mps11->ramp_delay16 = pdata->buck16_ramp_delay;
s2mps11->ramp_delay7810 = pdata->buck7810_ramp_delay;
s2mps11->ramp_delay9 = pdata->buck9_ramp_delay;

s2mps11->buck6_ramp = pdata->buck6_ramp_enable;
s2mps11->buck2_ramp = pdata->buck2_ramp_enable;
s2mps11->buck3_ramp = pdata->buck3_ramp_enable;
s2mps11->buck4_ramp = pdata->buck4_ramp_enable;

ramp_enable = (s2mps11->buck2_ramp << 3) | (s2mps11->buck3_ramp << 2) |
(s2mps11->buck4_ramp << 1) | s2mps11->buck6_ramp ;

if (ramp_enable) {
if (s2mps11->buck2_ramp)
ramp_reg |= get_ramp_delay(s2mps11->ramp_delay2) >> 6;
if (s2mps11->buck3_ramp || s2mps11->buck4_ramp)
ramp_reg |= get_ramp_delay(s2mps11->ramp_delay34) >> 4;
sec_reg_update(s2mps11->iodev, S2MPS11_REG_RAMP,
ramp_reg | ramp_enable, 0xff);
}

ramp_reg &= 0x00;
ramp_reg |= get_ramp_delay(s2mps11->ramp_delay5) >> 6;
ramp_reg |= get_ramp_delay(s2mps11->ramp_delay16) >> 4;
ramp_reg |= get_ramp_delay(s2mps11->ramp_delay7810) >> 2;
ramp_reg |= get_ramp_delay(s2mps11->ramp_delay9);
sec_reg_update(s2mps11->iodev, S2MPS11_REG_RAMP_BUCK, ramp_reg, 0xff);

for (i = 0; i < S2MPS11_REGULATOR_MAX; i++) {

config.dev = s2mps11->dev;
config.regmap = iodev->regmap;
config.init_data = pdata->regulators[i].initdata;
config.driver_data = s2mps11;

rdev[i] = regulator_register(&regulators[i], &config);
if (IS_ERR(rdev[i])) {
ret = PTR_ERR(rdev[i]);
dev_err(s2mps11->dev, "regulator init failed for %d\n",
i);
rdev[i] = NULL;
goto err;
}
}

return 0;
err:
for (i = 0; i < S2MPS11_REGULATOR_MAX; i++)
if (rdev[i])
regulator_unregister(rdev[i]);

return ret;
}

static int __devexit s2mps11_pmic_remove(struct platform_device *pdev)
{
struct s2mps11_info *s2mps11 = platform_get_drvdata(pdev);
struct regulator_dev **rdev = s2mps11->rdev;
int i;

for (i = 0; i < S2MPS11_REGULATOR_MAX; i++)
if (rdev[i])
regulator_unregister(rdev[i]);

return 0;
}

static const struct platform_device_id s2mps11_pmic_id[] = {
{ "s2mps11-pmic", 0},
{ },
};
MODULE_DEVICE_TABLE(platform, s2mps11_pmic_id);

static struct platform_driver s2mps11_pmic_driver = {
.driver = {
.name = "s2mps11-pmic",
.owner = THIS_MODULE,
},
.probe = s2mps11_pmic_probe,
.remove = __devexit_p(s2mps11_pmic_remove),
.id_table = s2mps11_pmic_id,
};

static int __init s2mps11_pmic_init(void)
{
return platform_driver_register(&s2mps11_pmic_driver);
}
subsys_initcall(s2mps11_pmic_init);

static void __exit s2mps11_pmic_exit(void)
{
platform_driver_unregister(&s2mps11_pmic_driver);
}
module_exit(s2mps11_pmic_exit);

/* Module information */
MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
MODULE_DESCRIPTION("SAMSUNG S2MPS11 Regulator Driver");
MODULE_LICENSE("GPL");

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