If unsure, say no.
+config REGULATOR_USERSPACE_CONSUMER
+ tristate "Userspace regulator consumer support"
+ default n
+ help
+ There are some classes of devices that are controlled entirely
+ from user space. Usersapce consumer driver provides ability to
+ control power supplies for such devices.
+
+ If unsure, say no.
+
config REGULATOR_BQ24022
tristate "TI bq24022 Dual Input 1-Cell Li-Ion Charger IC"
default n
charging select between 100 mA and 500 mA charging current
limit.
+config REGULATOR_MAX1586
+ tristate "Maxim 1586/1587 voltage regulator"
+ depends on I2C
+ default n
+ help
+ This driver controls a Maxim 1586 or 1587 voltage output
+ regulator via I2C bus. The provided regulator is suitable
+ for PXA27x chips to control VCC_CORE and VCC_USIM voltages.
+
config REGULATOR_TWL4030
bool "TI TWL4030/TWL5030/TPS695x0 PMIC"
depends on TWL4030_CORE
Say Y here to support the voltage regulators and convertors
on PCF50633
+config REGULATOR_LP3971
+ tristate "National Semiconductors LP3971 PMIC regulator driver"
+ depends on I2C
+ help
+ Say Y here to support the voltage regulators and convertors
+ on National Semiconductors LP3971 PMIC
+
endif
obj-$(CONFIG_REGULATOR) += core.o
obj-$(CONFIG_REGULATOR_FIXED_VOLTAGE) += fixed.o
obj-$(CONFIG_REGULATOR_VIRTUAL_CONSUMER) += virtual.o
+obj-$(CONFIG_REGULATOR_USERSPACE_CONSUMER) += userspace-consumer.o
obj-$(CONFIG_REGULATOR_BQ24022) += bq24022.o
+obj-$(CONFIG_REGULATOR_LP3971) += lp3971.o
+obj-$(CONFIG_REGULATOR_MAX1586) += max1586.o
obj-$(CONFIG_REGULATOR_TWL4030) += twl4030-regulator.o
obj-$(CONFIG_REGULATOR_WM8350) += wm8350-regulator.o
obj-$(CONFIG_REGULATOR_WM8400) += wm8400-regulator.o
{
return platform_driver_register(&da903x_regulator_driver);
}
-module_init(da903x_regulator_init);
+subsys_initcall(da903x_regulator_init);
static void __exit da903x_regulator_exit(void)
{
return data->microvolts;
}
+static int fixed_voltage_list_voltage(struct regulator_dev *dev,
+ unsigned selector)
+{
+ struct fixed_voltage_data *data = rdev_get_drvdata(dev);
+
+ if (selector != 0)
+ return -EINVAL;
+
+ return data->microvolts;
+}
+
static struct regulator_ops fixed_voltage_ops = {
.is_enabled = fixed_voltage_is_enabled,
.enable = fixed_voltage_enable,
.get_voltage = fixed_voltage_get_voltage,
+ .list_voltage = fixed_voltage_list_voltage,
};
static int regulator_fixed_voltage_probe(struct platform_device *pdev)
}
drvdata->desc.type = REGULATOR_VOLTAGE;
drvdata->desc.owner = THIS_MODULE;
- drvdata->desc.ops = &fixed_voltage_ops,
+ drvdata->desc.ops = &fixed_voltage_ops;
+ drvdata->desc.n_voltages = 1;
drvdata->microvolts = config->microvolts;
{
return platform_driver_register(®ulator_fixed_voltage_driver);
}
-module_init(regulator_fixed_voltage_init);
+subsys_initcall(regulator_fixed_voltage_init);
static void __exit regulator_fixed_voltage_exit(void)
{
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_DESCRIPTION("Fixed voltage regulator");
MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:reg-fixed-voltage");
--- /dev/null
+/*
+ * Regulator driver for National Semiconductors LP3971 PMIC chip
+ *
+ * Copyright (C) 2009 Samsung Electronics
+ * Author: Marek Szyprowski <m.szyprowski@samsung.com>
+ *
+ * Based on wm8350.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/bug.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/lp3971.h>
+
+struct lp3971 {
+ struct device *dev;
+ struct mutex io_lock;
+ struct i2c_client *i2c;
+ int num_regulators;
+ struct regulator_dev **rdev;
+};
+
+static u8 lp3971_reg_read(struct lp3971 *lp3971, u8 reg);
+static int lp3971_set_bits(struct lp3971 *lp3971, u8 reg, u16 mask, u16 val);
+
+#define LP3971_SYS_CONTROL1_REG 0x07
+
+/* System control register 1 initial value,
+ bits 4 and 5 are EPROM programmable */
+#define SYS_CONTROL1_INIT_VAL 0x40
+#define SYS_CONTROL1_INIT_MASK 0xCF
+
+#define LP3971_BUCK_VOL_ENABLE_REG 0x10
+#define LP3971_BUCK_VOL_CHANGE_REG 0x20
+
+/* Voltage control registers shift:
+ LP3971_BUCK1 -> 0
+ LP3971_BUCK2 -> 4
+ LP3971_BUCK3 -> 6
+*/
+#define BUCK_VOL_CHANGE_SHIFT(x) (((1 << x) & ~0x01) << 1)
+#define BUCK_VOL_CHANGE_FLAG_GO 0x01
+#define BUCK_VOL_CHANGE_FLAG_TARGET 0x02
+#define BUCK_VOL_CHANGE_FLAG_MASK 0x03
+
+#define LP3971_BUCK1_BASE 0x23
+#define LP3971_BUCK2_BASE 0x29
+#define LP3971_BUCK3_BASE 0x32
+
+const static int buck_base_addr[] = {
+ LP3971_BUCK1_BASE,
+ LP3971_BUCK2_BASE,
+ LP3971_BUCK3_BASE,
+};
+
+#define LP3971_BUCK_TARGET_VOL1_REG(x) (buck_base_addr[x])
+#define LP3971_BUCK_TARGET_VOL2_REG(x) (buck_base_addr[x]+1)
+
+const static int buck_voltage_map[] = {
+ 0, 800, 850, 900, 950, 1000, 1050, 1100,
+ 1150, 1200, 1250, 1300, 1350, 1400, 1450, 1500,
+ 1550, 1600, 1650, 1700, 1800, 1900, 2500, 2800,
+ 3000, 3300,
+};
+
+#define BUCK_TARGET_VOL_MASK 0x3f
+#define BUCK_TARGET_VOL_MIN_IDX 0x01
+#define BUCK_TARGET_VOL_MAX_IDX 0x19
+
+#define LP3971_BUCK_RAMP_REG(x) (buck_base_addr[x]+2)
+
+#define LP3971_LDO_ENABLE_REG 0x12
+#define LP3971_LDO_VOL_CONTR_BASE 0x39
+
+/* Voltage control registers:
+ LP3971_LDO1 -> LP3971_LDO_VOL_CONTR_BASE + 0
+ LP3971_LDO2 -> LP3971_LDO_VOL_CONTR_BASE + 0
+ LP3971_LDO3 -> LP3971_LDO_VOL_CONTR_BASE + 1
+ LP3971_LDO4 -> LP3971_LDO_VOL_CONTR_BASE + 1
+ LP3971_LDO5 -> LP3971_LDO_VOL_CONTR_BASE + 2
+*/
+#define LP3971_LDO_VOL_CONTR_REG(x) (LP3971_LDO_VOL_CONTR_BASE + (x >> 1))
+
+/* Voltage control registers shift:
+ LP3971_LDO1 -> 0, LP3971_LDO2 -> 4
+ LP3971_LDO3 -> 0, LP3971_LDO4 -> 4
+ LP3971_LDO5 -> 0
+*/
+#define LDO_VOL_CONTR_SHIFT(x) ((x & 1) << 2)
+#define LDO_VOL_CONTR_MASK 0x0f
+
+const static int ldo45_voltage_map[] = {
+ 1000, 1050, 1100, 1150, 1200, 1250, 1300, 1350,
+ 1400, 1500, 1800, 1900, 2500, 2800, 3000, 3300,
+};
+
+const static int ldo123_voltage_map[] = {
+ 1800, 1900, 2000, 2100, 2200, 2300, 2400, 2500,
+ 2600, 2700, 2800, 2900, 3000, 3100, 3200, 3300,
+};
+
+const static int *ldo_voltage_map[] = {
+ ldo123_voltage_map, /* LDO1 */
+ ldo123_voltage_map, /* LDO2 */
+ ldo123_voltage_map, /* LDO3 */
+ ldo45_voltage_map, /* LDO4 */
+ ldo45_voltage_map, /* LDO5 */
+};
+
+#define LDO_VOL_VALUE_MAP(x) (ldo_voltage_map[(x - LP3971_LDO1)])
+
+#define LDO_VOL_MIN_IDX 0x00
+#define LDO_VOL_MAX_IDX 0x0f
+
+static int lp3971_ldo_list_voltage(struct regulator_dev *dev, unsigned index)
+{
+ int ldo = rdev_get_id(dev) - LP3971_LDO1;
+ return 1000 * LDO_VOL_VALUE_MAP(ldo)[index];
+}
+
+static int lp3971_ldo_is_enabled(struct regulator_dev *dev)
+{
+ struct lp3971 *lp3971 = rdev_get_drvdata(dev);
+ int ldo = rdev_get_id(dev) - LP3971_LDO1;
+ u16 mask = 1 << (1 + ldo);
+ u16 val;
+
+ val = lp3971_reg_read(lp3971, LP3971_LDO_ENABLE_REG);
+ return (val & mask) != 0;
+}
+
+static int lp3971_ldo_enable(struct regulator_dev *dev)
+{
+ struct lp3971 *lp3971 = rdev_get_drvdata(dev);
+ int ldo = rdev_get_id(dev) - LP3971_LDO1;
+ u16 mask = 1 << (1 + ldo);
+
+ return lp3971_set_bits(lp3971, LP3971_LDO_ENABLE_REG, mask, mask);
+}
+
+static int lp3971_ldo_disable(struct regulator_dev *dev)
+{
+ struct lp3971 *lp3971 = rdev_get_drvdata(dev);
+ int ldo = rdev_get_id(dev) - LP3971_LDO1;
+ u16 mask = 1 << (1 + ldo);
+
+ return lp3971_set_bits(lp3971, LP3971_LDO_ENABLE_REG, mask, 0);
+}
+
+static int lp3971_ldo_get_voltage(struct regulator_dev *dev)
+{
+ struct lp3971 *lp3971 = rdev_get_drvdata(dev);
+ int ldo = rdev_get_id(dev) - LP3971_LDO1;
+ u16 val, reg;
+
+ reg = lp3971_reg_read(lp3971, LP3971_LDO_VOL_CONTR_REG(ldo));
+ val = (reg >> LDO_VOL_CONTR_SHIFT(ldo)) & LDO_VOL_CONTR_MASK;
+
+ return 1000 * LDO_VOL_VALUE_MAP(ldo)[val];
+}
+
+static int lp3971_ldo_set_voltage(struct regulator_dev *dev,
+ int min_uV, int max_uV)
+{
+ struct lp3971 *lp3971 = rdev_get_drvdata(dev);
+ int ldo = rdev_get_id(dev) - LP3971_LDO1;
+ int min_vol = min_uV / 1000, max_vol = max_uV / 1000;
+ const int *vol_map = LDO_VOL_VALUE_MAP(ldo);
+ u16 val;
+
+ if (min_vol < vol_map[LDO_VOL_MIN_IDX] ||
+ min_vol > vol_map[LDO_VOL_MAX_IDX])
+ return -EINVAL;
+
+ for (val = LDO_VOL_MIN_IDX; val <= LDO_VOL_MAX_IDX; val++)
+ if (vol_map[val] >= min_vol)
+ break;
+
+ if (vol_map[val] > max_vol)
+ return -EINVAL;
+
+ return lp3971_set_bits(lp3971, LP3971_LDO_VOL_CONTR_REG(ldo),
+ LDO_VOL_CONTR_MASK << LDO_VOL_CONTR_SHIFT(ldo), val);
+}
+
+static struct regulator_ops lp3971_ldo_ops = {
+ .list_voltage = lp3971_ldo_list_voltage,
+ .is_enabled = lp3971_ldo_is_enabled,
+ .enable = lp3971_ldo_enable,
+ .disable = lp3971_ldo_disable,
+ .get_voltage = lp3971_ldo_get_voltage,
+ .set_voltage = lp3971_ldo_set_voltage,
+};
+
+static int lp3971_dcdc_list_voltage(struct regulator_dev *dev, unsigned index)
+{
+ return 1000 * buck_voltage_map[index];
+}
+
+static int lp3971_dcdc_is_enabled(struct regulator_dev *dev)
+{
+ struct lp3971 *lp3971 = rdev_get_drvdata(dev);
+ int buck = rdev_get_id(dev) - LP3971_DCDC1;
+ u16 mask = 1 << (buck * 2);
+ u16 val;
+
+ val = lp3971_reg_read(lp3971, LP3971_BUCK_VOL_ENABLE_REG);
+ return (val & mask) != 0;
+}
+
+static int lp3971_dcdc_enable(struct regulator_dev *dev)
+{
+ struct lp3971 *lp3971 = rdev_get_drvdata(dev);
+ int buck = rdev_get_id(dev) - LP3971_DCDC1;
+ u16 mask = 1 << (buck * 2);
+
+ return lp3971_set_bits(lp3971, LP3971_BUCK_VOL_ENABLE_REG, mask, mask);
+}
+
+static int lp3971_dcdc_disable(struct regulator_dev *dev)
+{
+ struct lp3971 *lp3971 = rdev_get_drvdata(dev);
+ int buck = rdev_get_id(dev) - LP3971_DCDC1;
+ u16 mask = 1 << (buck * 2);
+
+ return lp3971_set_bits(lp3971, LP3971_BUCK_VOL_ENABLE_REG, mask, 0);
+}
+
+static int lp3971_dcdc_get_voltage(struct regulator_dev *dev)
+{
+ struct lp3971 *lp3971 = rdev_get_drvdata(dev);
+ int buck = rdev_get_id(dev) - LP3971_DCDC1;
+ u16 reg;
+ int val;
+
+ reg = lp3971_reg_read(lp3971, LP3971_BUCK_TARGET_VOL1_REG(buck));
+ reg &= BUCK_TARGET_VOL_MASK;
+
+ if (reg <= BUCK_TARGET_VOL_MAX_IDX)
+ val = 1000 * buck_voltage_map[reg];
+ else {
+ val = 0;
+ dev_warn(&dev->dev, "chip reported incorrect voltage value.\n");
+ }
+
+ return val;
+}
+
+static int lp3971_dcdc_set_voltage(struct regulator_dev *dev,
+ int min_uV, int max_uV)
+{
+ struct lp3971 *lp3971 = rdev_get_drvdata(dev);
+ int buck = rdev_get_id(dev) - LP3971_DCDC1;
+ int min_vol = min_uV / 1000, max_vol = max_uV / 1000;
+ const int *vol_map = buck_voltage_map;
+ u16 val;
+ int ret;
+
+ if (min_vol < vol_map[BUCK_TARGET_VOL_MIN_IDX] ||
+ min_vol > vol_map[BUCK_TARGET_VOL_MAX_IDX])
+ return -EINVAL;
+
+ for (val = BUCK_TARGET_VOL_MIN_IDX; val <= BUCK_TARGET_VOL_MAX_IDX;
+ val++)
+ if (vol_map[val] >= min_vol)
+ break;
+
+ if (vol_map[val] > max_vol)
+ return -EINVAL;
+
+ ret = lp3971_set_bits(lp3971, LP3971_BUCK_TARGET_VOL1_REG(buck),
+ BUCK_TARGET_VOL_MASK, val);
+ if (ret)
+ return ret;
+
+ ret = lp3971_set_bits(lp3971, LP3971_BUCK_VOL_CHANGE_REG,
+ BUCK_VOL_CHANGE_FLAG_MASK << BUCK_VOL_CHANGE_SHIFT(buck),
+ BUCK_VOL_CHANGE_FLAG_GO << BUCK_VOL_CHANGE_SHIFT(buck));
+ if (ret)
+ return ret;
+
+ return lp3971_set_bits(lp3971, LP3971_BUCK_VOL_CHANGE_REG,
+ BUCK_VOL_CHANGE_FLAG_MASK << BUCK_VOL_CHANGE_SHIFT(buck),
+ 0 << BUCK_VOL_CHANGE_SHIFT(buck));
+}
+
+static struct regulator_ops lp3971_dcdc_ops = {
+ .list_voltage = lp3971_dcdc_list_voltage,
+ .is_enabled = lp3971_dcdc_is_enabled,
+ .enable = lp3971_dcdc_enable,
+ .disable = lp3971_dcdc_disable,
+ .get_voltage = lp3971_dcdc_get_voltage,
+ .set_voltage = lp3971_dcdc_set_voltage,
+};
+
+static struct regulator_desc regulators[] = {
+ {
+ .name = "LDO1",
+ .id = LP3971_LDO1,
+ .ops = &lp3971_ldo_ops,
+ .n_voltages = ARRAY_SIZE(ldo123_voltage_map),
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ {
+ .name = "LDO2",
+ .id = LP3971_LDO2,
+ .ops = &lp3971_ldo_ops,
+ .n_voltages = ARRAY_SIZE(ldo123_voltage_map),
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ {
+ .name = "LDO3",
+ .id = LP3971_LDO3,
+ .ops = &lp3971_ldo_ops,
+ .n_voltages = ARRAY_SIZE(ldo123_voltage_map),
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ {
+ .name = "LDO4",
+ .id = LP3971_LDO4,
+ .ops = &lp3971_ldo_ops,
+ .n_voltages = ARRAY_SIZE(ldo45_voltage_map),
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ {
+ .name = "LDO5",
+ .id = LP3971_LDO5,
+ .ops = &lp3971_ldo_ops,
+ .n_voltages = ARRAY_SIZE(ldo45_voltage_map),
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ {
+ .name = "DCDC1",
+ .id = LP3971_DCDC1,
+ .ops = &lp3971_dcdc_ops,
+ .n_voltages = ARRAY_SIZE(buck_voltage_map),
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ {
+ .name = "DCDC2",
+ .id = LP3971_DCDC2,
+ .ops = &lp3971_dcdc_ops,
+ .n_voltages = ARRAY_SIZE(buck_voltage_map),
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ {
+ .name = "DCDC3",
+ .id = LP3971_DCDC3,
+ .ops = &lp3971_dcdc_ops,
+ .n_voltages = ARRAY_SIZE(buck_voltage_map),
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+};
+
+static int lp3971_i2c_read(struct i2c_client *i2c, char reg, int count,
+ u16 *dest)
+{
+ int ret;
+
+ if (count != 1)
+ return -EIO;
+ ret = i2c_smbus_read_byte_data(i2c, reg);
+ if (ret < 0 || count != 1)
+ return -EIO;
+
+ *dest = ret;
+ return 0;
+}
+
+static int lp3971_i2c_write(struct i2c_client *i2c, char reg, int count,
+ const u16 *src)
+{
+ int ret;
+
+ if (count != 1)
+ return -EIO;
+ ret = i2c_smbus_write_byte_data(i2c, reg, *src);
+ if (ret >= 0)
+ return 0;
+
+ return ret;
+}
+
+static u8 lp3971_reg_read(struct lp3971 *lp3971, u8 reg)
+{
+ u16 val = 0;
+
+ mutex_lock(&lp3971->io_lock);
+
+ lp3971_i2c_read(lp3971->i2c, reg, 1, &val);
+
+ dev_dbg(lp3971->dev, "reg read 0x%02x -> 0x%02x\n", (int)reg,
+ (unsigned)val&0xff);
+
+ mutex_unlock(&lp3971->io_lock);
+
+ return val & 0xff;
+}
+
+static int lp3971_set_bits(struct lp3971 *lp3971, u8 reg, u16 mask, u16 val)
+{
+ u16 tmp;
+ int ret;
+
+ mutex_lock(&lp3971->io_lock);
+
+ ret = lp3971_i2c_read(lp3971->i2c, reg, 1, &tmp);
+ tmp = (tmp & ~mask) | val;
+ if (ret == 0) {
+ ret = lp3971_i2c_write(lp3971->i2c, reg, 1, &tmp);
+ dev_dbg(lp3971->dev, "reg write 0x%02x -> 0x%02x\n", (int)reg,
+ (unsigned)val&0xff);
+ }
+ mutex_unlock(&lp3971->io_lock);
+
+ return ret;
+}
+
+static int setup_regulators(struct lp3971 *lp3971,
+ struct lp3971_platform_data *pdata)
+{
+ int i, err;
+ int num_regulators = pdata->num_regulators;
+ lp3971->num_regulators = num_regulators;
+ lp3971->rdev = kzalloc(sizeof(struct regulator_dev *) * num_regulators,
+ GFP_KERNEL);
+
+ /* Instantiate the regulators */
+ for (i = 0; i < num_regulators; i++) {
+ int id = pdata->regulators[i].id;
+ lp3971->rdev[i] = regulator_register(®ulators[id],
+ lp3971->dev, pdata->regulators[i].initdata, lp3971);
+
+ err = IS_ERR(lp3971->rdev[i]);
+ if (err) {
+ dev_err(lp3971->dev, "regulator init failed: %d\n",
+ err);
+ goto error;
+ }
+ }
+
+ return 0;
+error:
+ for (i = 0; i < num_regulators; i++)
+ if (lp3971->rdev[i])
+ regulator_unregister(lp3971->rdev[i]);
+ kfree(lp3971->rdev);
+ lp3971->rdev = NULL;
+ return err;
+}
+
+static int __devinit lp3971_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct lp3971 *lp3971;
+ struct lp3971_platform_data *pdata = i2c->dev.platform_data;
+ int ret;
+ u16 val;
+
+ lp3971 = kzalloc(sizeof(struct lp3971), GFP_KERNEL);
+ if (lp3971 == NULL) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ lp3971->i2c = i2c;
+ lp3971->dev = &i2c->dev;
+ i2c_set_clientdata(i2c, lp3971);
+
+ mutex_init(&lp3971->io_lock);
+
+ /* Detect LP3971 */
+ ret = lp3971_i2c_read(i2c, LP3971_SYS_CONTROL1_REG, 1, &val);
+ if (ret == 0 && (val & SYS_CONTROL1_INIT_MASK) != SYS_CONTROL1_INIT_VAL)
+ ret = -ENODEV;
+ if (ret < 0) {
+ dev_err(&i2c->dev, "failed to detect device\n");
+ goto err_detect;
+ }
+
+ if (pdata) {
+ ret = setup_regulators(lp3971, pdata);
+ if (ret < 0)
+ goto err_detect;
+ } else
+ dev_warn(lp3971->dev, "No platform init data supplied\n");
+
+ return 0;
+
+err_detect:
+ i2c_set_clientdata(i2c, NULL);
+ kfree(lp3971);
+err:
+ return ret;
+}
+
+static int __devexit lp3971_i2c_remove(struct i2c_client *i2c)
+{
+ struct lp3971 *lp3971 = i2c_get_clientdata(i2c);
+ int i;
+ for (i = 0; i < lp3971->num_regulators; i++)
+ if (lp3971->rdev[i])
+ regulator_unregister(lp3971->rdev[i]);
+ kfree(lp3971->rdev);
+ i2c_set_clientdata(i2c, NULL);
+ kfree(lp3971);
+
+ return 0;
+}
+
+static const struct i2c_device_id lp3971_i2c_id[] = {
+ { "lp3971", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, lp3971_i2c_id);
+
+static struct i2c_driver lp3971_i2c_driver = {
+ .driver = {
+ .name = "LP3971",
+ .owner = THIS_MODULE,
+ },
+ .probe = lp3971_i2c_probe,
+ .remove = __devexit_p(lp3971_i2c_remove),
+ .id_table = lp3971_i2c_id,
+};
+
+static int __init lp3971_module_init(void)
+{
+ int ret = -ENODEV;
+
+ ret = i2c_add_driver(&lp3971_i2c_driver);
+ if (ret != 0)
+ pr_err("Failed to register I2C driver: %d\n", ret);
+
+ return ret;
+}
+module_init(lp3971_module_init);
+
+static void __exit lp3971_module_exit(void)
+{
+ i2c_del_driver(&lp3971_i2c_driver);
+}
+module_exit(lp3971_module_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Marek Szyprowski <m.szyprowski@samsung.com>");
+MODULE_DESCRIPTION("LP3971 PMIC driver");
--- /dev/null
+/*
+ * max1586.c -- Voltage and current regulation for the Maxim 1586
+ *
+ * Copyright (C) 2008 Robert Jarzmik
+ *
+ * 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
+ */
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/max1586.h>
+
+#define MAX1586_V3_MAX_VSEL 31
+#define MAX1586_V6_MAX_VSEL 3
+
+#define MAX1586_V3_MIN_UV 700000
+#define MAX1586_V3_MAX_UV 1475000
+
+#define MAX1586_V6_MIN_UV 0
+#define MAX1586_V6_MAX_UV 3000000
+
+#define I2C_V3_SELECT (0 << 5)
+#define I2C_V6_SELECT (1 << 5)
+
+struct max1586_data {
+ struct i2c_client *client;
+
+ /* min/max V3 voltage */
+ unsigned int min_uV;
+ unsigned int max_uV;
+
+ struct regulator_dev *rdev[0];
+};
+
+/*
+ * V3 voltage
+ * On I2C bus, sending a "x" byte to the max1586 means :
+ * set V3 to 0.700V + (x & 0x1f) * 0.025V
+ * This voltage can be increased by external resistors
+ * R24 and R25=100kOhm as described in the data sheet.
+ * The gain is approximately: 1 + R24/R25 + R24/185.5kOhm
+ */
+static int max1586_v3_calc_voltage(struct max1586_data *max1586,
+ unsigned selector)
+{
+ unsigned range_uV = max1586->max_uV - max1586->min_uV;
+
+ return max1586->min_uV + (selector * range_uV / MAX1586_V3_MAX_VSEL);
+}
+
+static int max1586_v3_set(struct regulator_dev *rdev, int min_uV, int max_uV)
+{
+ struct max1586_data *max1586 = rdev_get_drvdata(rdev);
+ struct i2c_client *client = max1586->client;
+ unsigned range_uV = max1586->max_uV - max1586->min_uV;
+ unsigned selector;
+ u8 v3_prog;
+
+ if (min_uV > max1586->max_uV || max_uV < max1586->min_uV)
+ return -EINVAL;
+ if (min_uV < max1586->min_uV)
+ min_uV = max1586->min_uV;
+
+ selector = ((min_uV - max1586->min_uV) * MAX1586_V3_MAX_VSEL +
+ range_uV - 1) / range_uV;
+ if (max1586_v3_calc_voltage(max1586, selector) > max_uV)
+ return -EINVAL;
+
+ dev_dbg(&client->dev, "changing voltage v3 to %dmv\n",
+ max1586_v3_calc_voltage(max1586, selector) / 1000);
+
+ v3_prog = I2C_V3_SELECT | (u8) selector;
+ return i2c_smbus_write_byte(client, v3_prog);
+}
+
+static int max1586_v3_list(struct regulator_dev *rdev, unsigned selector)
+{
+ struct max1586_data *max1586 = rdev_get_drvdata(rdev);
+
+ if (selector > MAX1586_V3_MAX_VSEL)
+ return -EINVAL;
+ return max1586_v3_calc_voltage(max1586, selector);
+}
+
+/*
+ * V6 voltage
+ * On I2C bus, sending a "x" byte to the max1586 means :
+ * set V6 to either 0V, 1.8V, 2.5V, 3V depending on (x & 0x3)
+ * As regulator framework doesn't accept voltages to be 0V, we use 1uV.
+ */
+static int max1586_v6_calc_voltage(unsigned selector)
+{
+ static int voltages_uv[] = { 1, 1800000, 2500000, 3000000 };
+
+ return voltages_uv[selector];
+}
+
+static int max1586_v6_set(struct regulator_dev *rdev, int min_uV, int max_uV)
+{
+ struct i2c_client *client = rdev_get_drvdata(rdev);
+ unsigned selector;
+ u8 v6_prog;
+
+ if (min_uV < MAX1586_V6_MIN_UV || min_uV > MAX1586_V6_MAX_UV)
+ return -EINVAL;
+ if (max_uV < MAX1586_V6_MIN_UV || max_uV > MAX1586_V6_MAX_UV)
+ return -EINVAL;
+
+ if (min_uV >= 3000000)
+ selector = 3;
+ if (min_uV < 3000000)
+ selector = 2;
+ if (min_uV < 2500000)
+ selector = 1;
+ if (min_uV < 1800000)
+ selector = 0;
+
+ if (max1586_v6_calc_voltage(selector) > max_uV)
+ return -EINVAL;
+
+ dev_dbg(&client->dev, "changing voltage v6 to %dmv\n",
+ max1586_v6_calc_voltage(selector) / 1000);
+
+ v6_prog = I2C_V6_SELECT | (u8) selector;
+ return i2c_smbus_write_byte(client, v6_prog);
+}
+
+static int max1586_v6_list(struct regulator_dev *rdev, unsigned selector)
+{
+ if (selector > MAX1586_V6_MAX_VSEL)
+ return -EINVAL;
+ return max1586_v6_calc_voltage(selector);
+}
+
+/*
+ * The Maxim 1586 controls V3 and V6 voltages, but offers no way of reading back
+ * the set up value.
+ */
+static struct regulator_ops max1586_v3_ops = {
+ .set_voltage = max1586_v3_set,
+ .list_voltage = max1586_v3_list,
+};
+
+static struct regulator_ops max1586_v6_ops = {
+ .set_voltage = max1586_v6_set,
+ .list_voltage = max1586_v6_list,
+};
+
+static struct regulator_desc max1586_reg[] = {
+ {
+ .name = "Output_V3",
+ .id = MAX1586_V3,
+ .ops = &max1586_v3_ops,
+ .type = REGULATOR_VOLTAGE,
+ .n_voltages = MAX1586_V3_MAX_VSEL + 1,
+ .owner = THIS_MODULE,
+ },
+ {
+ .name = "Output_V6",
+ .id = MAX1586_V6,
+ .ops = &max1586_v6_ops,
+ .type = REGULATOR_VOLTAGE,
+ .n_voltages = MAX1586_V6_MAX_VSEL + 1,
+ .owner = THIS_MODULE,
+ },
+};
+
+static int max1586_pmic_probe(struct i2c_client *client,
+ const struct i2c_device_id *i2c_id)
+{
+ struct regulator_dev **rdev;
+ struct max1586_platform_data *pdata = client->dev.platform_data;
+ struct max1586_data *max1586;
+ int i, id, ret = -ENOMEM;
+
+ max1586 = kzalloc(sizeof(struct max1586_data) +
+ sizeof(struct regulator_dev *) * (MAX1586_V6 + 1),
+ GFP_KERNEL);
+ if (!max1586)
+ goto out;
+
+ max1586->client = client;
+
+ if (!pdata->v3_gain) {
+ ret = -EINVAL;
+ goto out_unmap;
+ }
+ max1586->min_uV = MAX1586_V3_MIN_UV / 1000 * pdata->v3_gain / 1000;
+ max1586->max_uV = MAX1586_V3_MAX_UV / 1000 * pdata->v3_gain / 1000;
+
+ rdev = max1586->rdev;
+ for (i = 0; i < pdata->num_subdevs && i <= MAX1586_V6; i++) {
+ id = pdata->subdevs[i].id;
+ if (!pdata->subdevs[i].platform_data)
+ continue;
+ if (id < MAX1586_V3 || id > MAX1586_V6) {
+ dev_err(&client->dev, "invalid regulator id %d\n", id);
+ goto err;
+ }
+ rdev[i] = regulator_register(&max1586_reg[id], &client->dev,
+ pdata->subdevs[i].platform_data,
+ max1586);
+ if (IS_ERR(rdev[i])) {
+ ret = PTR_ERR(rdev[i]);
+ dev_err(&client->dev, "failed to register %s\n",
+ max1586_reg[id].name);
+ goto err;
+ }
+ }
+
+ i2c_set_clientdata(client, rdev);
+ dev_info(&client->dev, "Maxim 1586 regulator driver loaded\n");
+ return 0;
+
+err:
+ while (--i >= 0)
+ regulator_unregister(rdev[i]);
+out_unmap:
+ kfree(max1586);
+out:
+ return ret;
+}
+
+static int max1586_pmic_remove(struct i2c_client *client)
+{
+ struct regulator_dev **rdev = i2c_get_clientdata(client);
+ int i;
+
+ for (i = 0; i <= MAX1586_V6; i++)
+ if (rdev[i])
+ regulator_unregister(rdev[i]);
+ kfree(rdev);
+ i2c_set_clientdata(client, NULL);
+
+ return 0;
+}
+
+static const struct i2c_device_id max1586_id[] = {
+ { "max1586", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, max1586_id);
+
+static struct i2c_driver max1586_pmic_driver = {
+ .probe = max1586_pmic_probe,
+ .remove = max1586_pmic_remove,
+ .driver = {
+ .name = "max1586",
+ },
+ .id_table = max1586_id,
+};
+
+static int __init max1586_pmic_init(void)
+{
+ return i2c_add_driver(&max1586_pmic_driver);
+}
+subsys_initcall(max1586_pmic_init);
+
+static void __exit max1586_pmic_exit(void)
+{
+ i2c_del_driver(&max1586_pmic_driver);
+}
+module_exit(max1586_pmic_exit);
+
+/* Module information */
+MODULE_DESCRIPTION("MAXIM 1586 voltage regulator driver");
+MODULE_AUTHOR("Robert Jarzmik");
+MODULE_LICENSE("GPL");
{
return platform_driver_register(&pcf50633_regulator_driver);
}
-module_init(pcf50633_regulator_init);
+subsys_initcall(pcf50633_regulator_init);
static void __exit pcf50633_regulator_exit(void)
{
--- /dev/null
+/*
+ * userspace-consumer.c
+ *
+ * Copyright 2009 CompuLab, Ltd.
+ *
+ * Author: Mike Rapoport <mike@compulab.co.il>
+ *
+ * Based of virtual consumer driver:
+ * Copyright 2008 Wolfson Microelectronics PLC.
+ * Author: Mark Brown <broonie@opensource.wolfsonmicro.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/err.h>
+#include <linux/mutex.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
+#include <linux/regulator/userspace-consumer.h>
+
+struct userspace_consumer_data {
+ const char *name;
+
+ struct mutex lock;
+ bool enabled;
+
+ int num_supplies;
+ struct regulator_bulk_data *supplies;
+};
+
+static ssize_t reg_show_name(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct userspace_consumer_data *data = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%s\n", data->name);
+}
+
+static ssize_t reg_show_state(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct userspace_consumer_data *data = dev_get_drvdata(dev);
+
+ if (data->enabled)
+ return sprintf(buf, "enabled\n");
+
+ return sprintf(buf, "disabled\n");
+}
+
+static ssize_t reg_set_state(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct userspace_consumer_data *data = dev_get_drvdata(dev);
+ bool enabled;
+ int ret;
+
+ /*
+ * sysfs_streq() doesn't need the \n's, but we add them so the strings
+ * will be shared with show_state(), above.
+ */
+ if (sysfs_streq(buf, "enabled\n") || sysfs_streq(buf, "1"))
+ enabled = true;
+ else if (sysfs_streq(buf, "disabled\n") || sysfs_streq(buf, "0"))
+ enabled = false;
+ else {
+ dev_err(dev, "Configuring invalid mode\n");
+ return count;
+ }
+
+ mutex_lock(&data->lock);
+ if (enabled != data->enabled) {
+ if (enabled)
+ ret = regulator_bulk_enable(data->num_supplies,
+ data->supplies);
+ else
+ ret = regulator_bulk_disable(data->num_supplies,
+ data->supplies);
+
+ if (ret == 0)
+ data->enabled = enabled;
+ else
+ dev_err(dev, "Failed to configure state: %d\n", ret);
+ }
+ mutex_unlock(&data->lock);
+
+ return count;
+}
+
+static DEVICE_ATTR(name, 0444, reg_show_name, NULL);
+static DEVICE_ATTR(state, 0644, reg_show_state, reg_set_state);
+
+static struct device_attribute *attributes[] = {
+ &dev_attr_name,
+ &dev_attr_state,
+};
+
+static int regulator_userspace_consumer_probe(struct platform_device *pdev)
+{
+ struct regulator_userspace_consumer_data *pdata;
+ struct userspace_consumer_data *drvdata;
+ int ret, i;
+
+ pdata = pdev->dev.platform_data;
+ if (!pdata)
+ return -EINVAL;
+
+ drvdata = kzalloc(sizeof(struct userspace_consumer_data), GFP_KERNEL);
+ if (drvdata == NULL)
+ return -ENOMEM;
+
+ drvdata->name = pdata->name;
+ drvdata->num_supplies = pdata->num_supplies;
+ drvdata->supplies = pdata->supplies;
+
+ mutex_init(&drvdata->lock);
+
+ ret = regulator_bulk_get(&pdev->dev, drvdata->num_supplies,
+ drvdata->supplies);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to get supplies: %d\n", ret);
+ goto err_alloc_supplies;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(attributes); i++) {
+ ret = device_create_file(&pdev->dev, attributes[i]);
+ if (ret != 0)
+ goto err_create_attrs;
+ }
+
+ if (pdata->init_on)
+ ret = regulator_bulk_enable(drvdata->num_supplies,
+ drvdata->supplies);
+
+ drvdata->enabled = pdata->init_on;
+
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to set initial state: %d\n", ret);
+ goto err_create_attrs;
+ }
+
+ platform_set_drvdata(pdev, drvdata);
+
+ return 0;
+
+err_create_attrs:
+ for (i = 0; i < ARRAY_SIZE(attributes); i++)
+ device_remove_file(&pdev->dev, attributes[i]);
+
+ regulator_bulk_free(drvdata->num_supplies, drvdata->supplies);
+
+err_alloc_supplies:
+ kfree(drvdata);
+ return ret;
+}
+
+static int regulator_userspace_consumer_remove(struct platform_device *pdev)
+{
+ struct userspace_consumer_data *data = platform_get_drvdata(pdev);
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(attributes); i++)
+ device_remove_file(&pdev->dev, attributes[i]);
+
+ if (data->enabled)
+ regulator_bulk_disable(data->num_supplies, data->supplies);
+
+ regulator_bulk_free(data->num_supplies, data->supplies);
+ kfree(data);
+
+ return 0;
+}
+
+static struct platform_driver regulator_userspace_consumer_driver = {
+ .probe = regulator_userspace_consumer_probe,
+ .remove = regulator_userspace_consumer_remove,
+ .driver = {
+ .name = "reg-userspace-consumer",
+ },
+};
+
+
+static int __init regulator_userspace_consumer_init(void)
+{
+ return platform_driver_register(®ulator_userspace_consumer_driver);
+}
+module_init(regulator_userspace_consumer_init);
+
+static void __exit regulator_userspace_consumer_exit(void)
+{
+ platform_driver_unregister(®ulator_userspace_consumer_driver);
+}
+module_exit(regulator_userspace_consumer_exit);
+
+MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
+MODULE_DESCRIPTION("Userspace consumer for voltage and current regulators");
+MODULE_LICENSE("GPL");
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_DESCRIPTION("Virtual regulator consumer");
MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:reg-virt-consumer");
MODULE_AUTHOR("Liam Girdwood");
MODULE_DESCRIPTION("WM8350 voltage and current regulator driver");
MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:wm8350-regulator");
struct regulator_dev *rdev;
rdev = regulator_register(®ulators[pdev->id], &pdev->dev,
- pdev->dev.platform_data, pdev->dev.driver_data);
+ pdev->dev.platform_data, dev_get_drvdata(&pdev->dev));
if (IS_ERR(rdev))
return PTR_ERR(rdev);
int wm8400_register_regulator(struct device *dev, int reg,
struct regulator_init_data *initdata)
{
- struct wm8400 *wm8400 = dev->driver_data;
+ struct wm8400 *wm8400 = dev_get_drvdata(dev);
if (wm8400->regulators[reg].name)
return -EBUSY;
wm8400->regulators[reg].name = "wm8400-regulator";
wm8400->regulators[reg].id = reg;
wm8400->regulators[reg].dev.parent = dev;
- wm8400->regulators[reg].dev.driver_data = wm8400;
wm8400->regulators[reg].dev.platform_data = initdata;
+ dev_set_drvdata(&wm8400->regulators[reg].dev, wm8400);
return platform_device_register(&wm8400->regulators[reg]);
}
{
return platform_driver_register(&wm8400_regulator_driver);
}
-module_init(wm8400_regulator_init);
+subsys_initcall(wm8400_regulator_init);
static void __exit wm8400_regulator_exit(void)
{
--- /dev/null
+/*
+ * National Semiconductors LP3971 PMIC chip client interface
+ *
+ * Copyright (C) 2009 Samsung Electronics
+ * Author: Marek Szyprowski <m.szyprowski@samsung.com>
+ *
+ * Based on wm8400.h
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __LINUX_REGULATOR_LP3971_H
+#define __LINUX_REGULATOR_LP3971_H
+
+#include <linux/regulator/machine.h>
+
+#define LP3971_LDO1 0
+#define LP3971_LDO2 1
+#define LP3971_LDO3 2
+#define LP3971_LDO4 3
+#define LP3971_LDO5 4
+
+#define LP3971_DCDC1 5
+#define LP3971_DCDC2 6
+#define LP3971_DCDC3 7
+
+#define LP3971_NUM_REGULATORS 8
+
+struct lp3971_regulator_subdev {
+ int id;
+ struct regulator_init_data *initdata;
+};
+
+struct lp3971_platform_data {
+ int num_regulators;
+ struct lp3971_regulator_subdev *regulators;
+};
+
+#endif
--- /dev/null
+/*
+ * max1586.h -- Voltage regulation for the Maxim 1586
+ *
+ * Copyright (C) 2008 Robert Jarzmik
+ *
+ * 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
+ */
+
+#ifndef REGULATOR_MAX1586
+#define REGULATOR_MAX1586
+
+#include <linux/regulator/machine.h>
+
+#define MAX1586_V3 0
+#define MAX1586_V6 1
+
+/* precalculated values for v3_gain */
+#define MAX1586_GAIN_NO_R24 1000000 /* 700000 .. 1475000 mV */
+#define MAX1586_GAIN_R24_3k32 1051098 /* 735768 .. 1550369 mV */
+#define MAX1586_GAIN_R24_5k11 1078648 /* 755053 .. 1591005 mV */
+#define MAX1586_GAIN_R24_7k5 1115432 /* 780802 .. 1645262 mV */
+
+/**
+ * max1586_subdev_data - regulator data
+ * @id: regulator Id (either MAX1586_V3 or MAX1586_V6)
+ * @name: regulator cute name (example for V3: "vcc_core")
+ * @platform_data: regulator init data (contraints, supplies, ...)
+ */
+struct max1586_subdev_data {
+ int id;
+ char *name;
+ struct regulator_init_data *platform_data;
+};
+
+/**
+ * max1586_platform_data - platform data for max1586
+ * @num_subdevs: number of regultors used (may be 1 or 2)
+ * @subdevs: regulator used
+ * At most, there will be a regulator for V3 and one for V6 voltages.
+ * @v3_gain: gain on the V3 voltage output multiplied by 1e6.
+ * This can be calculated as ((1 + R24/R25 + R24/185.5kOhm) * 1e6)
+ * for an external resistor configuration as described in the
+ * data sheet (R25=100kOhm).
+ */
+struct max1586_platform_data {
+ int num_subdevs;
+ struct max1586_subdev_data *subdevs;
+ int v3_gain;
+};
+
+#endif
--- /dev/null
+#ifndef __REGULATOR_PLATFORM_CONSUMER_H_
+#define __REGULATOR_PLATFORM_CONSUMER_H_
+
+struct regulator_consumer_supply;
+
+/**
+ * struct regulator_userspace_consumer_data - line consumer
+ * initialisation data.
+ *
+ * @name: Name for the consumer line
+ * @num_supplies: Number of supplies feeding the line
+ * @supplies: Supplies configuration.
+ * @init_on: Set if the regulators supplying the line should be
+ * enabled during initialisation
+ */
+struct regulator_userspace_consumer_data {
+ const char *name;
+
+ int num_supplies;
+ struct regulator_bulk_data *supplies;
+
+ bool init_on;
+};
+
+#endif /* __REGULATOR_PLATFORM_CONSUMER_H_ */
projects / deliverable / linux.git / commitdiff
