diff options
| -rw-r--r-- | drivers/mfd/Kconfig | 15 | ||||
| -rw-r--r-- | drivers/mfd/Makefile | 1 | ||||
| -rw-r--r-- | drivers/mfd/tps65217.c | 242 | ||||
| -rw-r--r-- | include/linux/mfd/tps65217.h | 283 |
4 files changed, 541 insertions, 0 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index f147395bac9..c559d352c42 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -143,6 +143,21 @@ config TPS6507X This driver can also be built as a module. If so, the module will be called tps6507x. +config MFD_TPS65217 + tristate "TPS65217 Power Management / White LED chips" + depends on I2C + select MFD_CORE + select REGMAP_I2C + help + If you say yes here you get support for the TPS65217 series of + Power Management / White LED chips. + These include voltage regulators, lithium ion/polymer battery + charger, wled and other features that are often used in portable + devices. + + This driver can also be built as a module. If so, the module + will be called tps65217. + config MFD_TPS6586X bool "TPS6586x Power Management chips" depends on I2C=y && GPIOLIB && GENERIC_HARDIRQS diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index b953bab934f..27430d3e839 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -38,6 +38,7 @@ obj-$(CONFIG_MFD_WM8994) += wm8994-core.o wm8994-irq.o wm8994-regmap.o obj-$(CONFIG_TPS6105X) += tps6105x.o obj-$(CONFIG_TPS65010) += tps65010.o obj-$(CONFIG_TPS6507X) += tps6507x.o +obj-$(CONFIG_MFD_TPS65217) += tps65217.o obj-$(CONFIG_MFD_TPS65910) += tps65910.o tps65910-irq.o tps65912-objs := tps65912-core.o tps65912-irq.o obj-$(CONFIG_MFD_TPS65912) += tps65912.o diff --git a/drivers/mfd/tps65217.c b/drivers/mfd/tps65217.c new file mode 100644 index 00000000000..f7d854e4cc6 --- /dev/null +++ b/drivers/mfd/tps65217.c @@ -0,0 +1,242 @@ +/* + * tps65217.c + * + * TPS65217 chip family multi-function driver + * + * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.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 version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/kernel.h> +#include <linux/device.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/init.h> +#include <linux/i2c.h> +#include <linux/slab.h> +#include <linux/regmap.h> +#include <linux/err.h> + +#include <linux/mfd/core.h> +#include <linux/mfd/tps65217.h> + +/** + * tps65217_reg_read: Read a single tps65217 register. + * + * @tps: Device to read from. + * @reg: Register to read. + * @val: Contians the value + */ +int tps65217_reg_read(struct tps65217 *tps, unsigned int reg, + unsigned int *val) +{ + return regmap_read(tps->regmap, reg, val); +} +EXPORT_SYMBOL_GPL(tps65217_reg_read); + +/** + * tps65217_reg_write: Write a single tps65217 register. + * + * @tps65217: Device to write to. + * @reg: Register to write to. + * @val: Value to write. + * @level: Password protected level + */ +int tps65217_reg_write(struct tps65217 *tps, unsigned int reg, + unsigned int val, unsigned int level) +{ + int ret; + unsigned int xor_reg_val; + + switch (level) { + case TPS65217_PROTECT_NONE: + return regmap_write(tps->regmap, reg, val); + case TPS65217_PROTECT_L1: + xor_reg_val = reg ^ TPS65217_PASSWORD_REGS_UNLOCK; + ret = regmap_write(tps->regmap, TPS65217_REG_PASSWORD, + xor_reg_val); + if (ret < 0) + return ret; + + return regmap_write(tps->regmap, reg, val); + case TPS65217_PROTECT_L2: + xor_reg_val = reg ^ TPS65217_PASSWORD_REGS_UNLOCK; + ret = regmap_write(tps->regmap, TPS65217_REG_PASSWORD, + xor_reg_val); + if (ret < 0) + return ret; + ret = regmap_write(tps->regmap, reg, val); + if (ret < 0) + return ret; + ret = regmap_write(tps->regmap, TPS65217_REG_PASSWORD, + xor_reg_val); + if (ret < 0) + return ret; + return regmap_write(tps->regmap, reg, val); + default: + return -EINVAL; + } +} +EXPORT_SYMBOL_GPL(tps65217_reg_write); + +/** + * tps65217_update_bits: Modify bits w.r.t mask, val and level. + * + * @tps65217: Device to write to. + * @reg: Register to read-write to. + * @mask: Mask. + * @val: Value to write. + * @level: Password protected level + */ +int tps65217_update_bits(struct tps65217 *tps, unsigned int reg, + unsigned int mask, unsigned int val, unsigned int level) +{ + int ret; + unsigned int data; + + ret = tps65217_reg_read(tps, reg, &data); + if (ret) { + dev_err(tps->dev, "Read from reg 0x%x failed\n", reg); + return ret; + } + + data &= ~mask; + data |= val & mask; + + ret = tps65217_reg_write(tps, reg, data, level); + if (ret) + dev_err(tps->dev, "Write for reg 0x%x failed\n", reg); + + return ret; +} + +int tps65217_set_bits(struct tps65217 *tps, unsigned int reg, + unsigned int mask, unsigned int val, unsigned int level) +{ + return tps65217_update_bits(tps, reg, mask, val, level); +} +EXPORT_SYMBOL_GPL(tps65217_set_bits); + +int tps65217_clear_bits(struct tps65217 *tps, unsigned int reg, + unsigned int mask, unsigned int level) +{ + return tps65217_update_bits(tps, reg, mask, 0, level); +} +EXPORT_SYMBOL_GPL(tps65217_clear_bits); + +static struct regmap_config tps65217_regmap_config = { + .reg_bits = 8, + .val_bits = 8, +}; + +static int __devinit tps65217_probe(struct i2c_client *client, + const struct i2c_device_id *ids) +{ + struct tps65217 *tps; + struct tps65217_board *pdata = client->dev.platform_data; + int i, ret; + unsigned int version; + + tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL); + if (!tps) + return -ENOMEM; + + tps->pdata = pdata; + tps->regmap = regmap_init_i2c(client, &tps65217_regmap_config); + if (IS_ERR(tps->regmap)) { + ret = PTR_ERR(tps->regmap); + dev_err(tps->dev, "Failed to allocate register map: %d\n", + ret); + return ret; + } + + i2c_set_clientdata(client, tps); + tps->dev = &client->dev; + + ret = tps65217_reg_read(tps, TPS65217_REG_CHIPID, &version); + if (ret < 0) { + dev_err(tps->dev, "Failed to read revision" + " register: %d\n", ret); + goto err_regmap; + } + + dev_info(tps->dev, "TPS65217 ID %#x version 1.%d\n", + (version & TPS65217_CHIPID_CHIP_MASK) >> 4, + version & TPS65217_CHIPID_REV_MASK); + + for (i = 0; i < TPS65217_NUM_REGULATOR; i++) { + struct platform_device *pdev; + + pdev = platform_device_alloc("tps65217-pmic", i); + if (!pdev) { + dev_err(tps->dev, "Cannot create regulator %d\n", i); + continue; + } + + pdev->dev.parent = tps->dev; + platform_device_add_data(pdev, &pdata->tps65217_init_data[i], + sizeof(pdata->tps65217_init_data[i])); + tps->regulator_pdev[i] = pdev; + + platform_device_add(pdev); + } + + return 0; + +err_regmap: + regmap_exit(tps->regmap); + + return ret; +} + +static int __devexit tps65217_remove(struct i2c_client *client) +{ + struct tps65217 *tps = i2c_get_clientdata(client); + int i; + + for (i = 0; i < TPS65217_NUM_REGULATOR; i++) + platform_device_unregister(tps->regulator_pdev[i]); + + regmap_exit(tps->regmap); + + return 0; +} + +static const struct i2c_device_id tps65217_id_table[] = { + {"tps65217", 0xF0}, + {/* end of list */} +}; +MODULE_DEVICE_TABLE(i2c, tps65217_id_table); + +static struct i2c_driver tps65217_driver = { + .driver = { + .name = "tps65217", + }, + .id_table = tps65217_id_table, + .probe = tps65217_probe, + .remove = __devexit_p(tps65217_remove), +}; + +static int __init tps65217_init(void) +{ + return i2c_add_driver(&tps65217_driver); +} +subsys_initcall(tps65217_init); + +static void __exit tps65217_exit(void) +{ + i2c_del_driver(&tps65217_driver); +} +module_exit(tps65217_exit); + +MODULE_AUTHOR("AnilKumar Ch <anilkumar@ti.com>"); +MODULE_DESCRIPTION("TPS65217 chip family multi-function driver"); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/mfd/tps65217.h b/include/linux/mfd/tps65217.h new file mode 100644 index 00000000000..e030ef9a64e --- /dev/null +++ b/include/linux/mfd/tps65217.h @@ -0,0 +1,283 @@ +/* + * linux/mfd/tps65217.h + * + * Functions to access TPS65217 power management chip. + * + * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.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 version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __LINUX_MFD_TPS65217_H +#define __LINUX_MFD_TPS65217_H + +#include <linux/i2c.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/machine.h> + +/* I2C ID for TPS65217 part */ +#define TPS65217_I2C_ID 0x24 + +/* All register addresses */ +#define TPS65217_REG_CHIPID 0X00 +#define TPS65217_REG_PPATH 0X01 +#define TPS65217_REG_INT 0X02 +#define TPS65217_REG_CHGCONFIG0 0X03 +#define TPS65217_REG_CHGCONFIG1 0X04 +#define TPS65217_REG_CHGCONFIG2 0X05 +#define TPS65217_REG_CHGCONFIG3 0X06 +#define TPS65217_REG_WLEDCTRL1 0X07 +#define TPS65217_REG_WLEDCTRL2 0X08 +#define TPS65217_REG_MUXCTRL 0X09 +#define TPS65217_REG_STATUS 0X0A +#define TPS65217_REG_PASSWORD 0X0B +#define TPS65217_REG_PGOOD 0X0C +#define TPS65217_REG_DEFPG 0X0D +#define TPS65217_REG_DEFDCDC1 0X0E +#define TPS65217_REG_DEFDCDC2 0X0F +#define TPS65217_REG_DEFDCDC3 0X10 +#define TPS65217_REG_DEFSLEW 0X11 +#define TPS65217_REG_DEFLDO1 0X12 +#define TPS65217_REG_DEFLDO2 0X13 +#define TPS65217_REG_DEFLS1 0X14 +#define TPS65217_REG_DEFLS2 0X15 +#define TPS65217_REG_ENABLE 0X16 +#define TPS65217_REG_DEFUVLO 0X18 +#define TPS65217_REG_SEQ1 0X19 +#define TPS65217_REG_SEQ2 0X1A +#define TPS65217_REG_SEQ3 0X1B +#define TPS65217_REG_SEQ4 0X1C +#define TPS65217_REG_SEQ5 0X1D +#define TPS65217_REG_SEQ6 0X1E + +/* Register field definitions */ +#define TPS65217_CHIPID_CHIP_MASK 0xF0 +#define TPS65217_CHIPID_REV_MASK 0x0F + +#define TPS65217_PPATH_ACSINK_ENABLE BIT(7) +#define TPS65217_PPATH_USBSINK_ENABLE BIT(6) +#define TPS65217_PPATH_AC_PW_ENABLE BIT(5) +#define TPS65217_PPATH_USB_PW_ENABLE BIT(4) +#define TPS65217_PPATH_AC_CURRENT_MASK 0x0C +#define TPS65217_PPATH_USB_CURRENT_MASK 0x03 + +#define TPS65217_INT_PBM BIT(6) +#define TPS65217_INT_ACM BIT(5) +#define TPS65217_INT_USBM BIT(4) +#define TPS65217_INT_PBI BIT(2) +#define TPS65217_INT_ACI BIT(1) +#define TPS65217_INT_USBI BIT(0) + +#define TPS65217_CHGCONFIG0_TREG BIT(7) +#define TPS65217_CHGCONFIG0_DPPM BIT(6) +#define TPS65217_CHGCONFIG0_TSUSP BIT(5) +#define TPS65217_CHGCONFIG0_TERMI BIT(4) +#define TPS65217_CHGCONFIG0_ACTIVE BIT(3) +#define TPS65217_CHGCONFIG0_CHGTOUT BIT(2) +#define TPS65217_CHGCONFIG0_PCHGTOUT BIT(1) +#define TPS65217_CHGCONFIG0_BATTEMP BIT(0) + +#define TPS65217_CHGCONFIG1_TMR_MASK 0xC0 +#define TPS65217_CHGCONFIG1_TMR_ENABLE BIT(5) +#define TPS65217_CHGCONFIG1_NTC_TYPE BIT(4) +#define TPS65217_CHGCONFIG1_RESET BIT(3) +#define TPS65217_CHGCONFIG1_TERM BIT(2) +#define TPS65217_CHGCONFIG1_SUSP BIT(1) +#define TPS65217_CHGCONFIG1_CHG_EN BIT(0) + +#define TPS65217_CHGCONFIG2_DYNTMR BIT(7) +#define TPS65217_CHGCONFIG2_VPREGHG BIT(6) +#define TPS65217_CHGCONFIG2_VOREG_MASK 0x30 + +#define TPS65217_CHGCONFIG3_ICHRG_MASK 0xC0 +#define TPS65217_CHGCONFIG3_DPPMTH_MASK 0x30 +#define TPS65217_CHGCONFIG2_PCHRGT BIT(3) +#define TPS65217_CHGCONFIG2_TERMIF 0x06 +#define TPS65217_CHGCONFIG2_TRANGE BIT(0) + +#define TPS65217_WLEDCTRL1_ISINK_ENABLE BIT(3) +#define TPS65217_WLEDCTRL1_ISEL BIT(2) +#define TPS65217_WLEDCTRL1_FDIM_MASK 0x03 + +#define TPS65217_WLEDCTRL2_DUTY_MASK 0x7F + +#define TPS65217_MUXCTRL_MUX_MASK 0x07 + +#define TPS65217_STATUS_OFF BIT(7) +#define TPS65217_STATUS_ACPWR BIT(3) +#define TPS65217_STATUS_USBPWR BIT(2) +#define TPS65217_STATUS_PB BIT(0) + +#define TPS65217_PASSWORD_REGS_UNLOCK 0x7D + +#define TPS65217_PGOOD_LDO3_PG BIT(6) +#define TPS65217_PGOOD_LDO4_PG BIT(5) +#define TPS65217_PGOOD_DC1_PG BIT(4) +#define TPS65217_PGOOD_DC2_PG BIT(3) +#define TPS65217_PGOOD_DC3_PG BIT(2) +#define TPS65217_PGOOD_LDO1_PG BIT(1) +#define TPS65217_PGOOD_LDO2_PG BIT(0) + +#define TPS65217_DEFPG_LDO1PGM BIT(3) +#define TPS65217_DEFPG_LDO2PGM BIT(2) +#define TPS65217_DEFPG_PGDLY_MASK 0x03 + +#define TPS65217_DEFDCDCX_XADJX BIT(7) +#define TPS65217_DEFDCDCX_DCDC_MASK 0x3F + +#define TPS65217_DEFSLEW_GO BIT(7) +#define TPS65217_DEFSLEW_GODSBL BIT(6) +#define TPS65217_DEFSLEW_PFM_EN1 BIT(5) +#define TPS65217_DEFSLEW_PFM_EN2 BIT(4) +#define TPS65217_DEFSLEW_PFM_EN3 BIT(3) +#define TPS65217_DEFSLEW_SLEW_MASK 0x07 + +#define TPS65217_DEFLDO1_LDO1_MASK 0x0F + +#define TPS65217_DEFLDO2_TRACK BIT(6) +#define TPS65217_DEFLDO2_LDO2_MASK 0x3F + +#define TPS65217_DEFLDO3_LDO3_EN BIT(5) +#define TPS65217_DEFLDO3_LDO3_MASK 0x1F + +#define TPS65217_DEFLDO4_LDO4_EN BIT(5) +#define TPS65217_DEFLDO4_LDO4_MASK 0x1F + +#define TPS65217_ENABLE_LS1_EN BIT(6) +#define TPS65217_ENABLE_LS2_EN BIT(5) +#define TPS65217_ENABLE_DC1_EN BIT(4) +#define TPS65217_ENABLE_DC2_EN BIT(3) +#define TPS65217_ENABLE_DC3_EN BIT(2) +#define TPS65217_ENABLE_LDO1_EN BIT(1) +#define TPS65217_ENABLE_LDO2_EN BIT(0) + +#define TPS65217_DEFUVLO_UVLOHYS BIT(2) +#define TPS65217_DEFUVLO_UVLO_MASK 0x03 + +#define TPS65217_SEQ1_DC1_SEQ_MASK 0xF0 +#define TPS65217_SEQ1_DC2_SEQ_MASK 0x0F + +#define TPS65217_SEQ2_DC3_SEQ_MASK 0xF0 +#define TPS65217_SEQ2_LDO1_SEQ_MASK 0x0F + +#define TPS65217_SEQ3_LDO2_SEQ_MASK 0xF0 +#define TPS65217_SEQ3_LDO3_SEQ_MASK 0x0F + +#define TPS65217_SEQ4_LDO4_SEQ_MASK 0xF0 + +#define TPS65217_SEQ5_DLY1_MASK 0xC0 +#define TPS65217_SEQ5_DLY2_MASK 0x30 +#define TPS65217_SEQ5_DLY3_MASK 0x0C +#define TPS65217_SEQ5_DLY4_MASK 0x03 + +#define TPS65217_SEQ6_DLY5_MASK 0xC0 +#define TPS65217_SEQ6_DLY6_MASK 0x30 +#define TPS65217_SEQ6_SEQUP BIT(2) +#define TPS65217_SEQ6_SEQDWN BIT(1) +#define TPS65217_SEQ6_INSTDWN BIT(0) + +#define TPS65217_MAX_REGISTER 0x1E +#define TPS65217_PROTECT_NONE 0 +#define TPS65217_PROTECT_L1 1 +#define TPS65217_PROTECT_L2 2 + + +enum tps65217_regulator_id { + /* DCDC's */ + TPS65217_DCDC_1, + TPS65217_DCDC_2, + TPS65217_DCDC_3, + /* LDOs */ + TPS65217_LDO_1, + TPS65217_LDO_2, + TPS65217_LDO_3, + TPS65217_LDO_4, +}; + +#define TPS65217_MAX_REG_ID TPS65217_LDO_4 + +/* Number of step-down converters available */ +#define TPS65217_NUM_DCDC 3 +/* Number of LDO voltage regulators available */ +#define TPS65217_NUM_LDO 4 +/* Number of total regulators available */ +#define TPS65217_NUM_REGULATOR (TPS65217_NUM_DCDC + TPS65217_NUM_LDO) + +/** + * struct tps65217_board - packages regulator init data + * @tps65217_regulator_data: regulator initialization values + * + * Board data may be used to initialize regulator. + */ +struct tps65217_board { + struct regulator_init_data *tps65217_init_data; +}; + +/** + * struct tps_info - packages regulator constraints + * @name: Voltage regulator name + * @min_uV: minimum micro volts + * @max_uV: minimum micro volts + * @vsel_to_uv: Function pointer to get voltage from selector + * @uv_to_vsel: Function pointer to get selector from voltage + * @table: Table for non-uniform voltage step-size + * @table_len: Length of the voltage table + * @enable_mask: Regulator enable mask bits + * @set_vout_reg: Regulator output voltage set register + * @set_vout_mask: Regulator output voltage set mask + * + * This data is used to check the regualtor voltage limits while setting. + */ +struct tps_info { + const char *name; + int min_uV; + int max_uV; + int (*vsel_to_uv)(unsigned int vsel); + int (*uv_to_vsel)(int uV, unsigned int *vsel); + const int *table; + unsigned int table_len; + unsigned int enable_mask; + unsigned int set_vout_reg; + unsigned int set_vout_mask; +}; + +/** + * struct tps65217 - tps65217 sub-driver chip access routines + * + * Device data may be used to access the TPS65217 chip + */ + +struct tps65217 { + struct device *dev; + struct tps65217_board *pdata; + struct regulator_desc desc[TPS65217_NUM_REGULATOR]; + struct regulator_dev *rdev[TPS65217_NUM_REGULATOR]; + struct tps_info *info[TPS65217_NUM_REGULATOR]; + struct regmap *regmap; + + /* Client devices */ + struct platform_device *regulator_pdev[TPS65217_NUM_REGULATOR]; +}; + +static inline struct tps65217 *dev_to_tps65217(struct device *dev) +{ + return dev_get_drvdata(dev); +} + +int tps65217_reg_read(struct tps65217 *tps, unsigned int reg, + unsigned int *val); +int tps65217_reg_write(struct tps65217 *tps, unsigned int reg, + unsigned int val, unsigned int level); +int tps65217_set_bits(struct tps65217 *tps, unsigned int reg, + unsigned int mask, unsigned int val, unsigned int level); +int tps65217_clear_bits(struct tps65217 *tps, unsigned int reg, + unsigned int mask, unsigned int level); + +#endif /* __LINUX_MFD_TPS65217_H */ |