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.

obj-$(CONFIG_REGULATOR_S2MPS11) += s2mps11.o

#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_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");

MODULE_DESCRIPTION("SAMSUNG S2MPS11 Regulator Driver");

MODULE_LICENSE("GPL");