mfd: Add new mfd device for TPS65217

The TPS65217 chip is a power management IC for Portable Navigation Systems
and Tablet Computing devices. It contains the following components:

- Regulators
- White LED
- USB battery charger

This patch adds support for tps65217 mfd device. At this time only
the regulator functionality is made available.

Signed-off-by: AnilKumar Ch <anilkumar@ti.com>
Reviwed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
AnilKumar Ch 2012-01-11 16:11:41 +05:30 committed by Samuel Ortiz
parent 0dcc9a9d83
commit d48f411c10
4 changed files with 541 additions and 0 deletions

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@ -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

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@ -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

242
drivers/mfd/tps65217.c Normal file
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@ -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");

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@ -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 */