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mfd: rt5033: Add Richtek RT5033 driver core.

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This patch adds a new driver for Richtek RT5033 driver.
RT5033 is a Multifunction device which includes battery charger, fuel gauge,
flash LED current source, LDO and synchronous Buck converter. It is interfaced
to host controller using I2C interface.

Signed-off-by: Beomho Seo <beomho.seo@samsung.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
tirimbino
Beomho Seo 10 years ago committed by Lee Jones
parent 52a98dcd37
commit 0b27125854
5 changed files with 477 additions and 0 deletions
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  1. 12
      drivers/mfd/Kconfig
  2. 1
      drivers/mfd/Makefile
  3. 142
      drivers/mfd/rt5033.c
  4. 260
      include/linux/mfd/rt5033-private.h
  5. 62
      include/linux/mfd/rt5033.h

12
drivers/mfd/Kconfig
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@ -623,6 +623,18 @@ config MFD_RTSX_PCI
types of memory cards, such as Memory Stick, Memory Stick Pro,
Secure Digital and MultiMediaCard.
config MFD_RT5033
tristate "Richtek RT5033 Power Management IC"
depends on I2C=y
select MFD_CORE
select REGMAP_I2C
help
This driver provides for the Richtek RT5033 Power Management IC,
which includes the I2C driver and the Core APIs. This driver provides
common support for accessing the device. The device supports multiple
sub-devices like charger, fuel gauge, flash LED, current source,
LDO and Buck.
config MFD_RTSX_USB
tristate "Realtek USB card reader"
depends on USB

1
drivers/mfd/Makefile
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@ -176,6 +176,7 @@ obj-$(CONFIG_MFD_IPAQ_MICRO) += ipaq-micro.o
obj-$(CONFIG_MFD_MENF21BMC) += menf21bmc.o
obj-$(CONFIG_MFD_HI6421_PMIC) += hi6421-pmic-core.o
obj-$(CONFIG_MFD_DLN2) += dln2.o
obj-$(CONFIG_MFD_RT5033) += rt5033.o
intel-soc-pmic-objs := intel_soc_pmic_core.o intel_soc_pmic_crc.o
obj-$(CONFIG_INTEL_SOC_PMIC) += intel-soc-pmic.o

142
drivers/mfd/rt5033.c
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@ -0,0 +1,142 @@
/*
* MFD core driver for the Richtek RT5033.
*
* RT5033 comprises multiple sub-devices switcing charger, fuel gauge,
* flash LED, current source, LDO and BUCK regulators.
*
* Copyright (C) 2014 Samsung Electronics, Co., Ltd.
* Author: Beomho Seo <beomho.seo@samsung.com>
*
* 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 bythe Free Software Foundation.
*/
#include <linux/err.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/of_device.h>
#include <linux/mfd/core.h>
#include <linux/mfd/rt5033.h>
#include <linux/mfd/rt5033-private.h>
static const struct regmap_irq rt5033_irqs[] = {
{ .mask = RT5033_PMIC_IRQ_BUCKOCP, },
{ .mask = RT5033_PMIC_IRQ_BUCKLV, },
{ .mask = RT5033_PMIC_IRQ_SAFELDOLV, },
{ .mask = RT5033_PMIC_IRQ_LDOLV, },
{ .mask = RT5033_PMIC_IRQ_OT, },
{ .mask = RT5033_PMIC_IRQ_VDDA_UV, },
};
static const struct regmap_irq_chip rt5033_irq_chip = {
.name = "rt5033",
.status_base = RT5033_REG_PMIC_IRQ_STAT,
.mask_base = RT5033_REG_PMIC_IRQ_CTRL,
.mask_invert = true,
.num_regs = 1,
.irqs = rt5033_irqs,
.num_irqs = ARRAY_SIZE(rt5033_irqs),
};
static const struct mfd_cell rt5033_devs[] = {
{ .name = "rt5033-regulator", },
{
.name = "rt5033-charger",
.of_compatible = "richtek,rt5033-charger",
}, {
.name = "rt5033-battery",
.of_compatible = "richtek,rt5033-battery",
},
};
static const struct regmap_config rt5033_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = RT5033_REG_END,
};
static int rt5033_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct rt5033_dev *rt5033;
unsigned int dev_id;
int ret;
rt5033 = devm_kzalloc(&i2c->dev, sizeof(*rt5033), GFP_KERNEL);
if (!rt5033)
return -ENOMEM;
i2c_set_clientdata(i2c, rt5033);
rt5033->dev = &i2c->dev;
rt5033->irq = i2c->irq;
rt5033->wakeup = true;
rt5033->regmap = devm_regmap_init_i2c(i2c, &rt5033_regmap_config);
if (IS_ERR(rt5033->regmap)) {
dev_err(&i2c->dev, "Failed to allocate register map.\n");
return PTR_ERR(rt5033->regmap);
}
ret = regmap_read(rt5033->regmap, RT5033_REG_DEVICE_ID, &dev_id);
if (ret) {
dev_err(&i2c->dev, "Device not found\n");
return -ENODEV;
}
dev_info(&i2c->dev, "Device found Device ID: %04x\n", dev_id);
ret = regmap_add_irq_chip(rt5033->regmap, rt5033->irq,
IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
0, &rt5033_irq_chip, &rt5033->irq_data);
if (ret) {
dev_err(&i2c->dev, "Failed to request IRQ %d: %d\n",
rt5033->irq, ret);
return ret;
}
ret = mfd_add_devices(rt5033->dev, -1, rt5033_devs,
ARRAY_SIZE(rt5033_devs), NULL, 0,
regmap_irq_get_domain(rt5033->irq_data));
if (ret < 0) {
dev_err(&i2c->dev, "Failed to add RT5033 child devices.\n");
return ret;
}
device_init_wakeup(rt5033->dev, rt5033->wakeup);
return 0;
}
static int rt5033_i2c_remove(struct i2c_client *i2c)
{
mfd_remove_devices(&i2c->dev);
return 0;
}
static const struct i2c_device_id rt5033_i2c_id[] = {
{ "rt5033", },
{ }
};
MODULE_DEVICE_TABLE(i2c, rt5033_i2c_id);
static const struct of_device_id rt5033_dt_match[] = {
{ .compatible = "richtek,rt5033", },
{ }
};
static struct i2c_driver rt5033_driver = {
.driver = {
.name = "rt5033",
.of_match_table = of_match_ptr(rt5033_dt_match),
},
.probe = rt5033_i2c_probe,
.remove = rt5033_i2c_remove,
.id_table = rt5033_i2c_id,
};
module_i2c_driver(rt5033_driver);
MODULE_ALIAS("i2c:rt5033");
MODULE_DESCRIPTION("Richtek RT5033 multi-function core driver");
MODULE_AUTHOR("Beomho Seo <beomho.seo@samsung.com>");
MODULE_LICENSE("GPL");

260
include/linux/mfd/rt5033-private.h
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@ -0,0 +1,260 @@
/*
* MFD core driver for Richtek RT5033
*
* Copyright (C) 2014 Samsung Electronics, Co., Ltd.
* Author: Beomho Seo <beomho.seo@samsung.com>
*
* 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 bythe Free Software Foundation.
*/
#ifndef __RT5033_PRIVATE_H__
#define __RT5033_PRIVATE_H__
enum rt5033_reg {
RT5033_REG_CHG_STAT = 0x00,
RT5033_REG_CHG_CTRL1 = 0x01,
RT5033_REG_CHG_CTRL2 = 0x02,
RT5033_REG_DEVICE_ID = 0x03,
RT5033_REG_CHG_CTRL3 = 0x04,
RT5033_REG_CHG_CTRL4 = 0x05,
RT5033_REG_CHG_CTRL5 = 0x06,
RT5033_REG_RT_CTRL0 = 0x07,
RT5033_REG_CHG_RESET = 0x08,
/* Reserved 0x09~0x18 */
RT5033_REG_RT_CTRL1 = 0x19,
/* Reserved 0x1A~0x20 */
RT5033_REG_FLED_FUNCTION1 = 0x21,
RT5033_REG_FLED_FUNCTION2 = 0x22,
RT5033_REG_FLED_STROBE_CTRL1 = 0x23,
RT5033_REG_FLED_STROBE_CTRL2 = 0x24,
RT5033_REG_FLED_CTRL1 = 0x25,
RT5033_REG_FLED_CTRL2 = 0x26,
RT5033_REG_FLED_CTRL3 = 0x27,
RT5033_REG_FLED_CTRL4 = 0x28,
RT5033_REG_FLED_CTRL5 = 0x29,
/* Reserved 0x2A~0x40 */
RT5033_REG_CTRL = 0x41,
RT5033_REG_BUCK_CTRL = 0x42,
RT5033_REG_LDO_CTRL = 0x43,
/* Reserved 0x44~0x46 */
RT5033_REG_MANUAL_RESET_CTRL = 0x47,
/* Reserved 0x48~0x5F */
RT5033_REG_CHG_IRQ1 = 0x60,
RT5033_REG_CHG_IRQ2 = 0x61,
RT5033_REG_CHG_IRQ3 = 0x62,
RT5033_REG_CHG_IRQ1_CTRL = 0x63,
RT5033_REG_CHG_IRQ2_CTRL = 0x64,
RT5033_REG_CHG_IRQ3_CTRL = 0x65,
RT5033_REG_LED_IRQ_STAT = 0x66,
RT5033_REG_LED_IRQ_CTRL = 0x67,
RT5033_REG_PMIC_IRQ_STAT = 0x68,
RT5033_REG_PMIC_IRQ_CTRL = 0x69,
RT5033_REG_SHDN_CTRL = 0x6A,
RT5033_REG_OFF_EVENT = 0x6B,
RT5033_REG_END,
};
/* RT5033 Charger state register */
#define RT5033_CHG_STAT_MASK 0x20
#define RT5033_CHG_STAT_DISCHARGING 0x00
#define RT5033_CHG_STAT_FULL 0x10
#define RT5033_CHG_STAT_CHARGING 0x20
#define RT5033_CHG_STAT_NOT_CHARGING 0x30
#define RT5033_CHG_STAT_TYPE_MASK 0x60
#define RT5033_CHG_STAT_TYPE_PRE 0x20
#define RT5033_CHG_STAT_TYPE_FAST 0x60
/* RT5033 CHGCTRL1 register */
#define RT5033_CHGCTRL1_IAICR_MASK 0xe0
#define RT5033_CHGCTRL1_MODE_MASK 0x01
/* RT5033 CHGCTRL2 register */
#define RT5033_CHGCTRL2_CV_MASK 0xfc
/* RT5033 CHGCTRL3 register */
#define RT5033_CHGCTRL3_CFO_EN_MASK 0x40
#define RT5033_CHGCTRL3_TIMER_MASK 0x38
#define RT5033_CHGCTRL3_TIMER_EN_MASK 0x01
/* RT5033 CHGCTRL4 register */
#define RT5033_CHGCTRL4_EOC_MASK 0x07
#define RT5033_CHGCTRL4_IPREC_MASK 0x18
/* RT5033 CHGCTRL5 register */
#define RT5033_CHGCTRL5_VPREC_MASK 0x0f
#define RT5033_CHGCTRL5_ICHG_MASK 0xf0
#define RT5033_CHGCTRL5_ICHG_SHIFT 0x04
#define RT5033_CHG_MAX_CURRENT 0x0d
/* RT5033 RT CTRL1 register */
#define RT5033_RT_CTRL1_UUG_MASK 0x02
#define RT5033_RT_HZ_MASK 0x01
/* RT5033 control register */
#define RT5033_CTRL_FCCM_BUCK_MASK 0x00
#define RT5033_CTRL_BUCKOMS_MASK 0x01
#define RT5033_CTRL_LDOOMS_MASK 0x02
#define RT5033_CTRL_SLDOOMS_MASK 0x03
#define RT5033_CTRL_EN_BUCK_MASK 0x04
#define RT5033_CTRL_EN_LDO_MASK 0x05
#define RT5033_CTRL_EN_SAFE_LDO_MASK 0x06
#define RT5033_CTRL_LDO_SLEEP_MASK 0x07
/* RT5033 BUCK control register */
#define RT5033_BUCK_CTRL_MASK 0x1f
/* RT5033 LDO control register */
#define RT5033_LDO_CTRL_MASK 0x1f
/* RT5033 charger property - model, manufacturer */
#define RT5033_CHARGER_MODEL "RT5033WSC Charger"
#define RT5033_MANUFACTURER "Richtek Technology Corporation"
/*
* RT5033 charger fast-charge current lmits (as in CHGCTRL1 register),
* AICR mode limits the input current for example,
* the AIRC 100 mode limits the input current to 100 mA.
*/
#define RT5033_AICR_100_MODE 0x20
#define RT5033_AICR_500_MODE 0x40
#define RT5033_AICR_700_MODE 0x60
#define RT5033_AICR_900_MODE 0x80
#define RT5033_AICR_1500_MODE 0xc0
#define RT5033_AICR_2000_MODE 0xe0
#define RT5033_AICR_MODE_MASK 0xe0
/* RT5033 use internal timer need to set time */
#define RT5033_FAST_CHARGE_TIMER4 0x00
#define RT5033_FAST_CHARGE_TIMER6 0x01
#define RT5033_FAST_CHARGE_TIMER8 0x02
#define RT5033_FAST_CHARGE_TIMER9 0x03
#define RT5033_FAST_CHARGE_TIMER12 0x04
#define RT5033_FAST_CHARGE_TIMER14 0x05
#define RT5033_FAST_CHARGE_TIMER16 0x06
#define RT5033_INT_TIMER_ENABLE 0x01
/* RT5033 charger termination enable mask */
#define RT5033_TE_ENABLE_MASK 0x08
/*
* RT5033 charger opa mode. RT50300 have two opa mode charger mode
* and boost mode for OTG
*/
#define RT5033_CHARGER_MODE 0x00
#define RT5033_BOOST_MODE 0x01
/* RT5033 charger termination enable */
#define RT5033_TE_ENABLE 0x08
/* RT5033 charger CFO enable */
#define RT5033_CFO_ENABLE 0x40
/* RT5033 charger constant charge voltage (as in CHGCTRL2 register), uV */
#define RT5033_CHARGER_CONST_VOLTAGE_LIMIT_MIN 3650000U
#define RT5033_CHARGER_CONST_VOLTAGE_STEP_NUM 25000U
#define RT5033_CHARGER_CONST_VOLTAGE_LIMIT_MAX 4400000U
/* RT5033 charger pre-charge current limits (as in CHGCTRL4 register), uA */
#define RT5033_CHARGER_PRE_CURRENT_LIMIT_MIN 350000U
#define RT5033_CHARGER_PRE_CURRENT_STEP_NUM 100000U
#define RT5033_CHARGER_PRE_CURRENT_LIMIT_MAX 650000U
/* RT5033 charger fast-charge current (as in CHGCTRL5 register), uA */
#define RT5033_CHARGER_FAST_CURRENT_MIN 700000U
#define RT5033_CHARGER_FAST_CURRENT_STEP_NUM 100000U
#define RT5033_CHARGER_FAST_CURRENT_MAX 2000000U
/*
* RT5033 charger const-charge end of charger current (
* as in CHGCTRL4 register), uA
*/
#define RT5033_CHARGER_EOC_MIN 150000U
#define RT5033_CHARGER_EOC_REF 300000U
#define RT5033_CHARGER_EOC_STEP_NUM1 50000U
#define RT5033_CHARGER_EOC_STEP_NUM2 100000U
#define RT5033_CHARGER_EOC_MAX 600000U
/*
* RT5033 charger pre-charge threshold volt limits
* (as in CHGCTRL5 register), uV
*/
#define RT5033_CHARGER_PRE_THRESHOLD_LIMIT_MIN 2300000U
#define RT5033_CHARGER_PRE_THRESHOLD_STEP_NUM 100000U
#define RT5033_CHARGER_PRE_THRESHOLD_LIMIT_MAX 3800000U
/*
* RT5033 charger enable UUG, If UUG enable MOS auto control by H/W charger
* circuit.
*/
#define RT5033_CHARGER_UUG_ENABLE 0x02
/* RT5033 charger High impedance mode */
#define RT5033_CHARGER_HZ_DISABLE 0x00
#define RT5033_CHARGER_HZ_ENABLE 0x01
/* RT5033 regulator BUCK output voltage uV */
#define RT5033_REGULATOR_BUCK_VOLTAGE_MIN 1000000U
#define RT5033_REGULATOR_BUCK_VOLTAGE_MAX 3000000U
#define RT5033_REGULATOR_BUCK_VOLTAGE_STEP 100000U
#define RT5033_REGULATOR_BUCK_VOLTAGE_STEP_NUM 32
/* RT5033 regulator LDO output voltage uV */
#define RT5033_REGULATOR_LDO_VOLTAGE_MIN 1200000U
#define RT5033_REGULATOR_LDO_VOLTAGE_MAX 3000000U
#define RT5033_REGULATOR_LDO_VOLTAGE_STEP 100000U
#define RT5033_REGULATOR_LDO_VOLTAGE_STEP_NUM 32
/* RT5033 regulator SAFE LDO output voltage uV */
#define RT5033_REGULATOR_SAFE_LDO_VOLTAGE 4900000U
enum rt5033_fuel_reg {
RT5033_FUEL_REG_OCV_H = 0x00,
RT5033_FUEL_REG_OCV_L = 0x01,
RT5033_FUEL_REG_VBAT_H = 0x02,
RT5033_FUEL_REG_VBAT_L = 0x03,
RT5033_FUEL_REG_SOC_H = 0x04,
RT5033_FUEL_REG_SOC_L = 0x05,
RT5033_FUEL_REG_CTRL_H = 0x06,
RT5033_FUEL_REG_CTRL_L = 0x07,
RT5033_FUEL_REG_CRATE = 0x08,
RT5033_FUEL_REG_DEVICE_ID = 0x09,
RT5033_FUEL_REG_AVG_VOLT_H = 0x0A,
RT5033_FUEL_REG_AVG_VOLT_L = 0x0B,
RT5033_FUEL_REG_CONFIG_H = 0x0C,
RT5033_FUEL_REG_CONFIG_L = 0x0D,
/* Reserved 0x0E~0x0F */
RT5033_FUEL_REG_IRQ_CTRL = 0x10,
RT5033_FUEL_REG_IRQ_FLAG = 0x11,
RT5033_FUEL_VMIN = 0x12,
RT5033_FUEL_SMIN = 0x13,
/* Reserved 0x14~0x1F */
RT5033_FUEL_VGCOMP1 = 0x20,
RT5033_FUEL_VGCOMP2 = 0x21,
RT5033_FUEL_VGCOMP3 = 0x22,
RT5033_FUEL_VGCOMP4 = 0x23,
/* Reserved 0x24~0xFD */
RT5033_FUEL_MFA_H = 0xFE,
RT5033_FUEL_MFA_L = 0xFF,
RT5033_FUEL_REG_END,
};
/* RT5033 fuel gauge battery present property */
#define RT5033_FUEL_BAT_PRESENT 0x02
/* RT5033 PMIC interrupts */
#define RT5033_PMIC_IRQ_BUCKOCP 2
#define RT5033_PMIC_IRQ_BUCKLV 3
#define RT5033_PMIC_IRQ_SAFELDOLV 4
#define RT5033_PMIC_IRQ_LDOLV 5
#define RT5033_PMIC_IRQ_OT 6
#define RT5033_PMIC_IRQ_VDDA_UV 7
#endif /* __RT5033_PRIVATE_H__ */

62
include/linux/mfd/rt5033.h
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@ -0,0 +1,62 @@
/*
* MFD core driver for the RT5033
*
* Copyright (C) 2014 Samsung Electronics
* Author: Beomho Seo <beomho.seo@samsung.com>
*
* 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 bythe Free Software Foundation.
*/
#ifndef __RT5033_H__
#define __RT5033_H__
#include <linux/regulator/consumer.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <linux/power_supply.h>
/* RT5033 regulator IDs */
enum rt5033_regulators {
RT5033_BUCK = 0,
RT5033_LDO,
RT5033_SAFE_LDO,
RT5033_REGULATOR_NUM,
};
struct rt5033_dev {
struct device *dev;
struct regmap *regmap;
struct regmap_irq_chip_data *irq_data;
int irq;
bool wakeup;
};
struct rt5033_battery {
struct i2c_client *client;
struct rt5033_dev *rt5033;
struct regmap *regmap;
struct power_supply psy;
};
/* RT5033 charger platform data */
struct rt5033_charger_data {
unsigned int pre_uamp;
unsigned int pre_uvolt;
unsigned int const_uvolt;
unsigned int eoc_uamp;
unsigned int fast_uamp;
};
struct rt5033_charger {
struct device *dev;
struct rt5033_dev *rt5033;
struct power_supply psy;
struct rt5033_charger_data *chg;
};
#endif /* __RT5033_H__ */
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