diff options
| -rw-r--r-- | drivers/mfd/Kconfig | 10 | ||||
| -rw-r--r-- | drivers/mfd/Makefile | 1 | ||||
| -rw-r--r-- | drivers/mfd/max8998.c | 160 | ||||
| -rw-r--r-- | drivers/regulator/Kconfig | 9 | ||||
| -rw-r--r-- | drivers/regulator/Makefile | 1 | ||||
| -rw-r--r-- | drivers/regulator/max8998.c | 610 | ||||
| -rw-r--r-- | include/linux/mfd/max8998-private.h | 112 | ||||
| -rw-r--r-- | include/linux/mfd/max8998.h | 78 |
8 files changed, 981 insertions, 0 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 9da0e504bbe9..ad61a9e8e04e 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -252,6 +252,16 @@ config MFD_MAX8925 accessing the device, additional drivers must be enabled in order to use the functionality of the device. +config MFD_MAX8998 + bool "Maxim Semiconductor MAX8998 PMIC Support" + depends on I2C=y + select MFD_CORE + help + Say yes here to support for Maxim Semiconductor MAX8998. This is + a Power Management IC. This driver provies common support for + accessing the device, additional drivers must be enabled in order + to use the functionality of the device. + config MFD_WM8400 tristate "Support Wolfson Microelectronics WM8400" select MFD_CORE diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index fb503e77dc60..a362ccfe8997 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -56,6 +56,7 @@ obj-$(CONFIG_UCB1400_CORE) += ucb1400_core.o obj-$(CONFIG_PMIC_DA903X) += da903x.o max8925-objs := max8925-core.o max8925-i2c.o obj-$(CONFIG_MFD_MAX8925) += max8925.o +obj-$(CONFIG_MFD_MAX8998) += max8998.o pcf50633-objs := pcf50633-core.o pcf50633-irq.o obj-$(CONFIG_MFD_PCF50633) += pcf50633.o diff --git a/drivers/mfd/max8998.c b/drivers/mfd/max8998.c new file mode 100644 index 000000000000..0d68de21ea9e --- /dev/null +++ b/drivers/mfd/max8998.c @@ -0,0 +1,160 @@ +/* + * max8698.c - mfd core driver for the Maxim 8998 + * + * Copyright (C) 2009-2010 Samsung Electronics + * Kyungmin Park <kyungmin.park@samsung.com> + * Marek Szyprowski <m.szyprowski@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. + * + * 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/moduleparam.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/i2c.h> +#include <linux/mutex.h> +#include <linux/mfd/core.h> +#include <linux/mfd/max8998.h> +#include <linux/mfd/max8998-private.h> + +static struct mfd_cell max8998_devs[] = { + { + .name = "max8998-pmic", + } +}; + +static int max8998_i2c_device_read(struct max8998_dev *max8998, u8 reg, u8 *dest) +{ + struct i2c_client *client = max8998->i2c_client; + int ret; + + mutex_lock(&max8998->iolock); + ret = i2c_smbus_read_byte_data(client, reg); + mutex_unlock(&max8998->iolock); + if (ret < 0) + return ret; + + ret &= 0xff; + *dest = ret; + return 0; +} + +static int max8998_i2c_device_write(struct max8998_dev *max8998, u8 reg, u8 value) +{ + struct i2c_client *client = max8998->i2c_client; + int ret; + + mutex_lock(&max8998->iolock); + ret = i2c_smbus_write_byte_data(client, reg, value); + mutex_unlock(&max8998->iolock); + return ret; +} + +static int max8998_i2c_device_update(struct max8998_dev *max8998, u8 reg, + u8 val, u8 mask) +{ + struct i2c_client *client = max8998->i2c_client; + int ret; + + mutex_lock(&max8998->iolock); + ret = i2c_smbus_read_byte_data(client, reg); + if (ret >= 0) { + u8 old_val = ret & 0xff; + u8 new_val = (val & mask) | (old_val & (~mask)); + ret = i2c_smbus_write_byte_data(client, reg, new_val); + if (ret >= 0) + ret = 0; + } + mutex_unlock(&max8998->iolock); + return ret; +} + +static int max8998_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct max8998_dev *max8998; + int ret = 0; + + max8998 = kzalloc(sizeof(struct max8998_dev), GFP_KERNEL); + if (max8998 == NULL) { + kfree(i2c); + return -ENOMEM; + } + + i2c_set_clientdata(i2c, max8998); + max8998->dev = &i2c->dev; + max8998->i2c_client = i2c; + max8998->dev_read = max8998_i2c_device_read; + max8998->dev_write = max8998_i2c_device_write; + max8998->dev_update = max8998_i2c_device_update; + mutex_init(&max8998->iolock); + + ret = mfd_add_devices(max8998->dev, -1, + max8998_devs, ARRAY_SIZE(max8998_devs), + NULL, 0); + if (ret < 0) + goto err; + + return ret; + +err: + mfd_remove_devices(max8998->dev); + kfree(max8998); + return ret; +} + +static int max8998_i2c_remove(struct i2c_client *i2c) +{ + struct max8998_dev *max8998 = i2c_get_clientdata(i2c); + + mfd_remove_devices(max8998->dev); + kfree(max8998); + + return 0; +} + +static const struct i2c_device_id max8998_i2c_id[] = { + { "max8998", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, max8998_i2c_id); + +static struct i2c_driver max8998_i2c_driver = { + .driver = { + .name = "max8998", + .owner = THIS_MODULE, + }, + .probe = max8998_i2c_probe, + .remove = max8998_i2c_remove, + .id_table = max8998_i2c_id, +}; + +static int __init max8998_i2c_init(void) +{ + return i2c_add_driver(&max8998_i2c_driver); +} +/* init early so consumer devices can complete system boot */ +subsys_initcall(max8998_i2c_init); + +static void __exit max8998_i2c_exit(void) +{ + i2c_del_driver(&max8998_i2c_driver); +} +module_exit(max8998_i2c_exit); + +MODULE_DESCRIPTION("MAXIM 8998 multi-function core driver"); +MODULE_AUTHOR("Kyungmin Park <kyungmin.park@samsung.com>"); +MODULE_LICENSE("GPL"); diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index 6bf56c93a336..671b81a39482 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -100,6 +100,15 @@ config REGULATOR_MAX8925 help Say y here to support the voltage regulaltor of Maxim MAX8925 PMIC. +config REGULATOR_MAX8998 + tristate "Maxim 8998 voltage regulator" + depends on I2C + default n + help + This driver controls a Maxim 8998 voltage output regulator + via I2C bus. The provided regulator is suitable for S3C6410 + and S5PC1XX chips to control VCC_CORE and VCC_USIM voltages. + config REGULATOR_TWL4030 bool "TI TWL4030/TWL5030/TWL6030/TPS695x0 PMIC" depends on TWL4030_CORE diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index 451a14a873f6..74a4638bd9a6 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -17,6 +17,7 @@ obj-$(CONFIG_REGULATOR_TWL4030) += twl-regulator.o obj-$(CONFIG_REGULATOR_MAX8649) += max8649.o obj-$(CONFIG_REGULATOR_MAX8660) += max8660.o obj-$(CONFIG_REGULATOR_MAX8925) += max8925-regulator.o +obj-$(CONFIG_REGULATOR_MAX8998) += max8998.o obj-$(CONFIG_REGULATOR_WM831X) += wm831x-dcdc.o obj-$(CONFIG_REGULATOR_WM831X) += wm831x-isink.o obj-$(CONFIG_REGULATOR_WM831X) += wm831x-ldo.o diff --git a/drivers/regulator/max8998.c b/drivers/regulator/max8998.c new file mode 100644 index 000000000000..174fd1957ae4 --- /dev/null +++ b/drivers/regulator/max8998.c @@ -0,0 +1,610 @@ +/* + * max8998.c - Voltage regulator driver for the Maxim 8998 + * + * Copyright (C) 2009-2010 Samsung Electronics + * Kyungmin Park <kyungmin.park@samsung.com> + * Marek Szyprowski <m.szyprowski@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. + * + * 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/init.h> +#include <linux/i2c.h> +#include <linux/err.h> +#include <linux/gpio.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/mutex.h> +#include <linux/platform_device.h> +#include <linux/regulator/driver.h> +#include <linux/mfd/max8998.h> +#include <linux/mfd/max8998-private.h> + +struct max8998_data { + struct device *dev; + struct max8998_dev *iodev; + int num_regulators; + struct regulator_dev **rdev; +}; + +struct voltage_map_desc { + int min; + int max; + int step; +}; + +/* Voltage maps */ +static const struct voltage_map_desc ldo23_voltage_map_desc = { + .min = 800, .step = 50, .max = 1300, +}; +static const struct voltage_map_desc ldo456711_voltage_map_desc = { + .min = 1600, .step = 100, .max = 3600, +}; +static const struct voltage_map_desc ldo8_voltage_map_desc = { + .min = 3000, .step = 100, .max = 3600, +}; +static const struct voltage_map_desc ldo9_voltage_map_desc = { + .min = 2800, .step = 100, .max = 3100, +}; +static const struct voltage_map_desc ldo10_voltage_map_desc = { + .min = 950, .step = 50, .max = 1300, +}; +static const struct voltage_map_desc ldo1213_voltage_map_desc = { + .min = 800, .step = 100, .max = 3300, +}; +static const struct voltage_map_desc ldo1415_voltage_map_desc = { + .min = 1200, .step = 100, .max = 3300, +}; +static const struct voltage_map_desc ldo1617_voltage_map_desc = { + .min = 1600, .step = 100, .max = 3600, +}; +static const struct voltage_map_desc buck12_voltage_map_desc = { + .min = 750, .step = 25, .max = 1525, +}; +static const struct voltage_map_desc buck3_voltage_map_desc = { + .min = 1600, .step = 100, .max = 3600, +}; +static const struct voltage_map_desc buck4_voltage_map_desc = { + .min = 800, .step = 100, .max = 2300, +}; + +static const struct voltage_map_desc *ldo_voltage_map[] = { + NULL, + NULL, + &ldo23_voltage_map_desc, /* LDO2 */ + &ldo23_voltage_map_desc, /* LDO3 */ + &ldo456711_voltage_map_desc, /* LDO4 */ + &ldo456711_voltage_map_desc, /* LDO5 */ + &ldo456711_voltage_map_desc, /* LDO6 */ + &ldo456711_voltage_map_desc, /* LDO7 */ + &ldo8_voltage_map_desc, /* LDO8 */ + &ldo9_voltage_map_desc, /* LDO9 */ + &ldo10_voltage_map_desc, /* LDO10 */ + &ldo456711_voltage_map_desc, /* LDO11 */ + &ldo1213_voltage_map_desc, /* LDO12 */ + &ldo1213_voltage_map_desc, /* LDO13 */ + &ldo1415_voltage_map_desc, /* LDO14 */ + &ldo1415_voltage_map_desc, /* LDO15 */ + &ldo1617_voltage_map_desc, /* LDO16 */ + &ldo1617_voltage_map_desc, /* LDO17 */ + &buck12_voltage_map_desc, /* BUCK1 */ + &buck12_voltage_map_desc, /* BUCK2 */ + &buck3_voltage_map_desc, /* BUCK3 */ + &buck4_voltage_map_desc, /* BUCK4 */ +}; + +static inline int max8998_get_ldo(struct regulator_dev *rdev) +{ + return rdev_get_id(rdev); +} + +static int max8998_list_voltage(struct regulator_dev *rdev, + unsigned int selector) +{ + const struct voltage_map_desc *desc; + int ldo = max8998_get_ldo(rdev); + int val; + + if (ldo > ARRAY_SIZE(ldo_voltage_map)) + return -EINVAL; + + desc = ldo_voltage_map[ldo]; + if (desc == NULL) + return -EINVAL; + + val = desc->min + desc->step * selector; + if (val > desc->max) + return -EINVAL; + + return val * 1000; +} + +static int max8998_get_enable_register(struct regulator_dev *rdev, + int *reg, int *shift) +{ + int ldo = max8998_get_ldo(rdev); + + switch (ldo) { + case MAX8998_LDO2 ... MAX8998_LDO5: + *reg = MAX8998_REG_ONOFF1; + *shift = 3 - (ldo - MAX8998_LDO2); + break; + case MAX8998_LDO6 ... MAX8998_LDO13: + *reg = MAX8998_REG_ONOFF2; + *shift = 7 - (ldo - MAX8998_LDO6); + break; + case MAX8998_LDO14 ... MAX8998_LDO17: + *reg = MAX8998_REG_ONOFF3; + *shift = 7 - (ldo - MAX8998_LDO14); + break; + case MAX8998_BUCK1 ... MAX8998_BUCK4: + *reg = MAX8998_REG_ONOFF1; + *shift = 7 - (ldo - MAX8998_BUCK1); + break; + case MAX8998_EN32KHZ_AP ... MAX8998_ENVICHG: + *reg = MAX8998_REG_ONOFF4; + *shift = 7 - (ldo - MAX8998_EN32KHZ_AP); + break; + case MAX8998_ESAFEOUT1 ... MAX8998_ESAFEOUT2: + *reg = MAX8998_REG_CHGR2; + *shift = 7 - (ldo - MAX8998_ESAFEOUT1); + break; + default: + return -EINVAL; + } + + return 0; +} + +static int max8998_ldo_is_enabled(struct regulator_dev *rdev) +{ + struct max8998_data *max8998 = rdev_get_drvdata(rdev); + int ret, reg, shift = 8; + u8 val; + + ret = max8998_get_enable_register(rdev, ®, &shift); + if (ret) + return ret; + + ret = max8998_read_reg(max8998->iodev, reg, &val); + if (ret) + return ret; + + return val & (1 << shift); +} + +static int max8998_ldo_enable(struct regulator_dev *rdev) +{ + struct max8998_data *max8998 = rdev_get_drvdata(rdev); + int reg, shift = 8, ret; + + ret = max8998_get_enable_register(rdev, ®, &shift); + if (ret) + return ret; + + return max8998_update_reg(max8998->iodev, reg, 1<<shift, 1<<shift); +} + +static int max8998_ldo_disable(struct regulator_dev *rdev) +{ + struct max8998_data *max8998 = rdev_get_drvdata(rdev); + int reg, shift = 8, ret; + + ret = max8998_get_enable_register(rdev, ®, &shift); + if (ret) + return ret; + + return max8998_update_reg(max8998->iodev, reg, 0, 1<<shift); +} + +static int max8998_get_voltage_register(struct regulator_dev *rdev, + int *_reg, int *_shift, int *_mask) +{ + int ldo = max8998_get_ldo(rdev); + int reg, shift = 0, mask = 0xff; + + switch (ldo) { + case MAX8998_LDO2 ... MAX8998_LDO3: + reg = MAX8998_REG_LDO2_LDO3; + mask = 0xf; + if (ldo == MAX8998_LDO2) + shift = 4; + else + shift = 0; + break; + case MAX8998_LDO4 ... MAX8998_LDO7: + reg = MAX8998_REG_LDO4 + (ldo - MAX8998_LDO4); + break; + case MAX8998_LDO8 ... MAX8998_LDO9: + reg = MAX8998_REG_LDO8_LDO9; + mask = 0xf; + if (ldo == MAX8998_LDO8) + shift = 4; + else + shift = 0; + break; + case MAX8998_LDO10 ... MAX8998_LDO11: + reg = MAX8998_REG_LDO10_LDO11; + if (ldo == MAX8998_LDO10) { + shift = 5; + mask = 0x7; + } else { + shift = 0; + mask = 0x1f; + } + break; + case MAX8998_LDO12 ... MAX8998_LDO17: + reg = MAX8998_REG_LDO12 + (ldo - MAX8998_LDO12); + break; + case MAX8998_BUCK1: + reg = MAX8998_REG_BUCK1_DVSARM1; + break; + case MAX8998_BUCK2: + reg = MAX8998_REG_BUCK2_DVSINT1; + break; + case MAX8998_BUCK3: + reg = MAX8998_REG_BUCK3; + break; + case MAX8998_BUCK4: + reg = MAX8998_REG_BUCK4; + break; + default: + return -EINVAL; + } + + *_reg = reg; + *_shift = shift; + *_mask = mask; + + return 0; +} + +static int max8998_get_voltage(struct regulator_dev *rdev) +{ + struct max8998_data *max8998 = rdev_get_drvdata(rdev); + int reg, shift = 0, mask, ret; + u8 val; + + ret = max8998_get_voltage_register(rdev, ®, &shift, &mask); + if (ret) + return ret; + + ret = max8998_read_reg(max8998->iodev, reg, &val); + if (ret) + return ret; + + val >>= shift; + val &= mask; + + return max8998_list_voltage(rdev, val); +} + +static int max8998_set_voltage(struct regulator_dev *rdev, + int min_uV, int max_uV) +{ + struct max8998_data *max8998 = rdev_get_drvdata(rdev); + int min_vol = min_uV / 1000, max_vol = max_uV / 1000; + const struct voltage_map_desc *desc; + int ldo = max8998_get_ldo(rdev); + int reg, shift = 0, mask, ret; + int i = 0; + + if (ldo > ARRAY_SIZE(ldo_voltage_map)) + return -EINVAL; + + desc = ldo_voltage_map[ldo]; + if (desc == NULL) + return -EINVAL; + + if (max_vol < desc->min || min_vol > desc->max) + return -EINVAL; + + while (desc->min + desc->step*i < max_vol && + desc->min + desc->step*i < desc->max) + i++; + + ret = max8998_get_voltage_register(rdev, ®, &shift, &mask); + if (ret) + return ret; + + return max8998_update_reg(max8998->iodev, reg, i<<shift, mask<<shift); +} + +static struct regulator_ops max8998_ldo_ops = { + .list_voltage = max8998_list_voltage, + .is_enabled = max8998_ldo_is_enabled, + .enable = max8998_ldo_enable, + .disable = max8998_ldo_disable, + .get_voltage = max8998_get_voltage, + .set_voltage = max8998_set_voltage, + .set_suspend_enable = max8998_ldo_enable, + .set_suspend_disable = max8998_ldo_disable, +}; + +static struct regulator_ops max8998_buck_ops = { + .list_voltage = max8998_list_voltage, + .is_enabled = max8998_ldo_is_enabled, + .enable = max8998_ldo_enable, + .disable = max8998_ldo_disable, + .get_voltage = max8998_get_voltage, + .set_voltage = max8998_set_voltage, + .set_suspend_enable = max8998_ldo_enable, + .set_suspend_disable = max8998_ldo_disable, +}; + +static struct regulator_ops max8998_others_ops = { + .is_enabled = max8998_ldo_is_enabled, + .enable = max8998_ldo_enable, + .disable = max8998_ldo_disable, + .set_suspend_enable = max8998_ldo_enable, + .set_suspend_disable = max8998_ldo_disable, +}; + +static struct regulator_desc regulators[] = { + { + .name = "LDO2", + .id = MAX8998_LDO2, + .ops = &max8998_ldo_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, { + .name = "LDO3", + .id = MAX8998_LDO3, + .ops = &max8998_ldo_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, { + .name = "LDO4", + .id = MAX8998_LDO4, + .ops = &max8998_ldo_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, { + .name = "LDO5", + .id = MAX8998_LDO5, + .ops = &max8998_ldo_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, { + .name = "LDO6", + .id = MAX8998_LDO6, + .ops = &max8998_ldo_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, { + .name = "LDO7", + .id = MAX8998_LDO7, + .ops = &max8998_ldo_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, { + .name = "LDO8", + .id = MAX8998_LDO8, + .ops = &max8998_ldo_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, { + .name = "LDO9", + .id = MAX8998_LDO9, + .ops = &max8998_ldo_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, { + .name = "LDO10", + .id = MAX8998_LDO10, + .ops = &max8998_ldo_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, { + .name = "LDO11", + .id = MAX8998_LDO11, + .ops = &max8998_ldo_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, { + .name = "LDO12", + .id = MAX8998_LDO12, + .ops = &max8998_ldo_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, { + .name = "LDO13", + .id = MAX8998_LDO13, + .ops = &max8998_ldo_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, { + .name = "LDO14", + .id = MAX8998_LDO14, + .ops = &max8998_ldo_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, { + .name = "LDO15", + .id = MAX8998_LDO15, + .ops = &max8998_ldo_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, { + .name = "LDO16", + .id = MAX8998_LDO16, + .ops = &max8998_ldo_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, { + .name = "LDO17", + .id = MAX8998_LDO17, + .ops = &max8998_ldo_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, { + .name = "BUCK1", + .id = MAX8998_BUCK1, + .ops = &max8998_buck_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, { + .name = "BUCK2", + .id = MAX8998_BUCK2, + .ops = &max8998_buck_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, { + .name = "BUCK3", + .id = MAX8998_BUCK3, + .ops = &max8998_buck_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, { + .name = "BUCK4", + .id = MAX8998_BUCK4, + .ops = &max8998_buck_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, { + .name = "EN32KHz AP", + .id = MAX8998_EN32KHZ_AP, + .ops = &max8998_others_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, { + .name = "EN32KHz CP", + .id = MAX8998_EN32KHZ_CP, + .ops = &max8998_others_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, { + .name = "ENVICHG", + .id = MAX8998_ENVICHG, + .ops = &max8998_others_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, { + .name = "ESAFEOUT1", + .id = MAX8998_ESAFEOUT1, + .ops = &max8998_others_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, { + .name = "ESAFEOUT2", + .id = MAX8998_ESAFEOUT2, + .ops = &max8998_others_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + } +}; + +static __devinit int max8998_pmic_probe(struct platform_device *pdev) +{ + struct max8998_dev *iodev = dev_get_drvdata(pdev->dev.parent); + struct max8998_platform_data *pdata = dev_get_platdata(iodev->dev); + struct regulator_dev **rdev; + struct max8998_data *max8998; + int i, ret, size; + + if (!pdata) { + dev_err(pdev->dev.parent, "No platform init data supplied\n"); + return -ENODEV; + } + + max8998 = kzalloc(sizeof(struct max8998_data), GFP_KERNEL); + if (!max8998) + return -ENOMEM; + + size = sizeof(struct regulator_dev *) * (pdata->num_regulators + 1); + max8998->rdev = kzalloc(size, GFP_KERNEL); + if (!max8998->rdev) { + kfree(max8998); + return -ENOMEM; + } + + rdev = max8998->rdev; + max8998->iodev = iodev; + platform_set_drvdata(pdev, max8998); + + for (i = 0; i < pdata->num_regulators; i++) { + const struct voltage_map_desc *desc; + int id = pdata->regulators[i].id; + int index = id - MAX8998_LDO2; + + desc = ldo_voltage_map[id]; + if (desc && regulators[index].ops != &max8998_others_ops) { + int count = (desc->max - desc->min) / desc->step + 1; + regulators[index].n_voltages = count; + } + rdev[i] = regulator_register(®ulators[index], max8998->dev, + pdata->regulators[i].initdata, max8998); + if (IS_ERR(rdev[i])) { + ret = PTR_ERR(rdev[i]); + dev_err(max8998->dev, "regulator init failed\n"); + rdev[i] = NULL; + goto err; + } + } + + + return 0; +err: + for (i = 0; i <= max8998->num_regulators; i++) + if (rdev[i]) + regulator_unregister(rdev[i]); + + kfree(max8998->rdev); + kfree(max8998); + + return ret; +} + +static int __devexit max8998_pmic_remove(struct platform_device *pdev) +{ + struct max8998_data *max8998 = platform_get_drvdata(pdev); + struct regulator_dev **rdev = max8998->rdev; + int i; + + for (i = 0; i <= max8998->num_regulators; i++) + if (rdev[i]) + regulator_unregister(rdev[i]); + + kfree(max8998->rdev); + kfree(max8998); + + return 0; +} + +static struct platform_driver max8998_pmic_driver = { + .driver = { + .name = "max8998-pmic", + .owner = THIS_MODULE, + }, + .probe = max8998_pmic_probe, + .remove = __devexit_p(max8998_pmic_remove), +}; + +static int __init max8998_pmic_init(void) +{ + return platform_driver_register(&max8998_pmic_driver); +} +subsys_initcall(max8998_pmic_init); + +static void __exit max8998_pmic_cleanup(void) +{ + platform_driver_unregister(&max8998_pmic_driver); +} +module_exit(max8998_pmic_cleanup); + +MODULE_DESCRIPTION("MAXIM 8998 voltage regulator driver"); +MODULE_AUTHOR("Kyungmin Park <kyungmin.park@samsung.com>"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/mfd/max8998-private.h b/include/linux/mfd/max8998-private.h new file mode 100644 index 000000000000..6dc75b3e2d33 --- /dev/null +++ b/include/linux/mfd/max8998-private.h @@ -0,0 +1,112 @@ +/* + * max8698.h - Voltage regulator driver for the Maxim 8998 + * + * Copyright (C) 2009-2010 Samsung Electrnoics + * Kyungmin Park <kyungmin.park@samsung.com> + * Marek Szyprowski <m.szyprowski@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. + * + * 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 __LINUX_MFD_MAX8998_PRIV_H +#define __LINUX_MFD_MAX8998_PRIV_H + +/* MAX 8998 registers */ +enum { + MAX8998_REG_IRQ1, + MAX8998_REG_IRQ2, + MAX8998_REG_IRQ3, + MAX8998_REG_IRQ4, + MAX8998_REG_IRQM1, + MAX8998_REG_IRQM2, + MAX8998_REG_IRQM3, + MAX8998_REG_IRQM4, + MAX8998_REG_STATUS1, + MAX8998_REG_STATUS2, + MAX8998_REG_STATUSM1, + MAX8998_REG_STATUSM2, + MAX8998_REG_CHGR1, + MAX8998_REG_CHGR2, + MAX8998_REG_LDO_ACTIVE_DISCHARGE1, + MAX8998_REG_LDO_ACTIVE_DISCHARGE2, + MAX8998_REG_BUCK_ACTIVE_DISCHARGE3, + MAX8998_REG_ONOFF1, + MAX8998_REG_ONOFF2, + MAX8998_REG_ONOFF3, + MAX8998_REG_ONOFF4, + MAX8998_REG_BUCK1_DVSARM1, + MAX8998_REG_BUCK1_DVSARM2, + MAX8998_REG_BUCK1_DVSARM3, + MAX8998_REG_BUCK1_DVSARM4, + MAX8998_REG_BUCK2_DVSINT1, + MAX8998_REG_BUCK2_DVSINT2, + MAX8998_REG_BUCK3, + MAX8998_REG_BUCK4, + MAX8998_REG_LDO2_LDO3, + MAX8998_REG_LDO4, + MAX8998_REG_LDO5, + MAX8998_REG_LDO6, + MAX8998_REG_LDO7, + MAX8998_REG_LDO8_LDO9, + MAX8998_REG_LDO10_LDO11, + MAX8998_REG_LDO12, + MAX8998_REG_LDO13, + MAX8998_REG_LDO14, + MAX8998_REG_LDO15, + MAX8998_REG_LDO16, + MAX8998_REG_LDO17, + MAX8998_REG_BKCHR, + MAX8998_REG_LBCNFG1, + MAX8998_REG_LBCNFG2, +}; + +/** + * struct max8998_dev - max8998 master device for sub-drivers + * @dev: master device of the chip (can be used to access platform data) + * @i2c_client: i2c client private data + * @dev_read(): chip register read function + * @dev_write(): chip register write function + * @dev_update(): chip register update function + * @iolock: mutex for serializing io access + */ + +struct max8998_dev { + struct device *dev; + struct i2c_client *i2c_client; + int (*dev_read)(struct max8998_dev *max8998, u8 reg, u8 *dest); + int (*dev_write)(struct max8998_dev *max8998, u8 reg, u8 val); + int (*dev_update)(struct max8998_dev *max8998, u8 reg, u8 val, u8 mask); + struct mutex iolock; +}; + +static inline int max8998_read_reg(struct max8998_dev *max8998, u8 reg, + u8 *value) +{ + return max8998->dev_read(max8998, reg, value); +} + +static inline int max8998_write_reg(struct max8998_dev *max8998, u8 reg, + u8 value) +{ + return max8998->dev_write(max8998, reg, value); +} + +static inline int max8998_update_reg(struct max8998_dev *max8998, u8 reg, + u8 value, u8 mask) +{ + return max8998->dev_update(max8998, reg, value, mask); +} + +#endif /* __LINUX_MFD_MAX8998_PRIV_H */ diff --git a/include/linux/mfd/max8998.h b/include/linux/mfd/max8998.h new file mode 100644 index 000000000000..1d3601a2d853 --- /dev/null +++ b/include/linux/mfd/max8998.h @@ -0,0 +1,78 @@ +/* + * max8698.h - Voltage regulator driver for the Maxim 8998 + * + * Copyright (C) 2009-2010 Samsung Electrnoics + * Kyungmin Park <kyungmin.park@samsung.com> + * Marek Szyprowski <m.szyprowski@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. + * + * 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 __LINUX_MFD_MAX8998_H +#define __LINUX_MFD_MAX8998_H + +#include <linux/regulator/machine.h> + +/* MAX 8998 regulator ids */ +enum { + MAX8998_LDO2 = 2, + MAX8998_LDO3, + MAX8998_LDO4, + MAX8998_LDO5, + MAX8998_LDO6, + MAX8998_LDO7, + MAX8998_LDO8, + MAX8998_LDO9, + MAX8998_LDO10, + MAX8998_LDO11, + MAX8998_LDO12, + MAX8998_LDO13, + MAX8998_LDO14, + MAX8998_LDO15, + MAX8998_LDO16, + MAX8998_LDO17, + MAX8998_BUCK1, + MAX8998_BUCK2, + MAX8998_BUCK3, + MAX8998_BUCK4, + MAX8998_EN32KHZ_AP, + MAX8998_EN32KHZ_CP, + MAX8998_ENVICHG, + MAX8998_ESAFEOUT1, + MAX8998_ESAFEOUT2, +}; + +/** + * max8998_regulator_data - regulator data + * @id: regulator id + * @initdata: regulator init data (contraints, supplies, ...) + */ +struct max8998_regulator_data { + int id; + struct regulator_init_data *initdata; +}; + +/** + * struct max8998_board - packages regulator init data + * @num_regulators: number of regultors used + * @regulators: array of defined regulators + */ + +struct max8998_platform_data { + int num_regulators; + struct max8998_regulator_data *regulators; +}; + +#endif /* __LINUX_MFD_MAX8998_H */ |