Commit 4107da2a authored by Haojian Zhuang's avatar Haojian Zhuang Committed by Samuel Ortiz

mfd: Add 88PM8607 driver

This adds a core driver for 88PM8607 found in Marvell DKB development
platform. This driver is a proxy for all accesses to 88PM8607
sub-drivers which will be merged on top of this one, RTC, regulators,
battery and so on.

This chip is manufactured by Marvell.
Signed-off-by: default avatarHaojian Zhuang <haojian.zhuang@marvell.com>
Reviewed-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent f4054253
/*
* Base driver for Marvell 88PM8607
*
* Copyright (C) 2009 Marvell International Ltd.
* Haojian Zhuang <haojian.zhuang@marvell.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 by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/mfd/core.h>
#include <linux/mfd/88pm8607.h>
#define PM8607_REG_RESOURCE(_start, _end) \
{ \
.start = PM8607_##_start, \
.end = PM8607_##_end, \
.flags = IORESOURCE_IO, \
}
static struct resource pm8607_regulator_resources[] = {
PM8607_REG_RESOURCE(BUCK1, BUCK1),
PM8607_REG_RESOURCE(BUCK2, BUCK2),
PM8607_REG_RESOURCE(BUCK3, BUCK3),
PM8607_REG_RESOURCE(LDO1, LDO1),
PM8607_REG_RESOURCE(LDO2, LDO2),
PM8607_REG_RESOURCE(LDO3, LDO3),
PM8607_REG_RESOURCE(LDO4, LDO4),
PM8607_REG_RESOURCE(LDO5, LDO5),
PM8607_REG_RESOURCE(LDO6, LDO6),
PM8607_REG_RESOURCE(LDO7, LDO7),
PM8607_REG_RESOURCE(LDO8, LDO8),
PM8607_REG_RESOURCE(LDO9, LDO9),
PM8607_REG_RESOURCE(LDO10, LDO10),
PM8607_REG_RESOURCE(LDO12, LDO12),
PM8607_REG_RESOURCE(LDO14, LDO14),
};
#define PM8607_REG_DEVS(_name, _id) \
{ \
.name = "88pm8607-" #_name, \
.num_resources = 1, \
.resources = &pm8607_regulator_resources[PM8607_ID_##_id], \
}
static struct mfd_cell pm8607_devs[] = {
PM8607_REG_DEVS(buck1, BUCK1),
PM8607_REG_DEVS(buck2, BUCK2),
PM8607_REG_DEVS(buck3, BUCK3),
PM8607_REG_DEVS(ldo1, LDO1),
PM8607_REG_DEVS(ldo2, LDO2),
PM8607_REG_DEVS(ldo3, LDO3),
PM8607_REG_DEVS(ldo4, LDO4),
PM8607_REG_DEVS(ldo5, LDO5),
PM8607_REG_DEVS(ldo6, LDO6),
PM8607_REG_DEVS(ldo7, LDO7),
PM8607_REG_DEVS(ldo8, LDO8),
PM8607_REG_DEVS(ldo9, LDO9),
PM8607_REG_DEVS(ldo10, LDO10),
PM8607_REG_DEVS(ldo12, LDO12),
PM8607_REG_DEVS(ldo14, LDO14),
};
static inline int pm8607_read_device(struct pm8607_chip *chip,
int reg, int bytes, void *dest)
{
struct i2c_client *i2c = chip->client;
unsigned char data;
int ret;
data = (unsigned char)reg;
ret = i2c_master_send(i2c, &data, 1);
if (ret < 0)
return ret;
ret = i2c_master_recv(i2c, dest, bytes);
if (ret < 0)
return ret;
return 0;
}
static inline int pm8607_write_device(struct pm8607_chip *chip,
int reg, int bytes, void *src)
{
struct i2c_client *i2c = chip->client;
unsigned char buf[bytes + 1];
int ret;
buf[0] = (unsigned char)reg;
memcpy(&buf[1], src, bytes);
ret = i2c_master_send(i2c, buf, bytes + 1);
if (ret < 0)
return ret;
return 0;
}
int pm8607_reg_read(struct pm8607_chip *chip, int reg)
{
unsigned char data;
int ret;
mutex_lock(&chip->io_lock);
ret = chip->read(chip, reg, 1, &data);
mutex_unlock(&chip->io_lock);
if (ret < 0)
return ret;
else
return (int)data;
}
EXPORT_SYMBOL(pm8607_reg_read);
int pm8607_reg_write(struct pm8607_chip *chip, int reg,
unsigned char data)
{
int ret;
mutex_lock(&chip->io_lock);
ret = chip->write(chip, reg, 1, &data);
mutex_unlock(&chip->io_lock);
return ret;
}
EXPORT_SYMBOL(pm8607_reg_write);
int pm8607_bulk_read(struct pm8607_chip *chip, int reg,
int count, unsigned char *buf)
{
int ret;
mutex_lock(&chip->io_lock);
ret = chip->read(chip, reg, count, buf);
mutex_unlock(&chip->io_lock);
return ret;
}
EXPORT_SYMBOL(pm8607_bulk_read);
int pm8607_bulk_write(struct pm8607_chip *chip, int reg,
int count, unsigned char *buf)
{
int ret;
mutex_lock(&chip->io_lock);
ret = chip->write(chip, reg, count, buf);
mutex_unlock(&chip->io_lock);
return ret;
}
EXPORT_SYMBOL(pm8607_bulk_write);
int pm8607_set_bits(struct pm8607_chip *chip, int reg,
unsigned char mask, unsigned char data)
{
unsigned char value;
int ret;
mutex_lock(&chip->io_lock);
ret = chip->read(chip, reg, 1, &value);
if (ret < 0)
goto out;
value &= ~mask;
value |= data;
ret = chip->write(chip, reg, 1, &value);
out:
mutex_unlock(&chip->io_lock);
return ret;
}
EXPORT_SYMBOL(pm8607_set_bits);
static const struct i2c_device_id pm8607_id_table[] = {
{ "88PM8607", 0 },
{}
};
MODULE_DEVICE_TABLE(i2c, pm8607_id_table);
static int __devinit pm8607_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct pm8607_platform_data *pdata = client->dev.platform_data;
struct pm8607_chip *chip;
int i, count;
int ret;
chip = kzalloc(sizeof(struct pm8607_chip), GFP_KERNEL);
if (chip == NULL)
return -ENOMEM;
chip->client = client;
chip->dev = &client->dev;
chip->read = pm8607_read_device;
chip->write = pm8607_write_device;
i2c_set_clientdata(client, chip);
mutex_init(&chip->io_lock);
dev_set_drvdata(chip->dev, chip);
ret = pm8607_reg_read(chip, PM8607_CHIP_ID);
if (ret < 0) {
dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret);
goto out;
}
if ((ret & CHIP_ID_MASK) == CHIP_ID)
dev_info(chip->dev, "Marvell 88PM8607 (ID: %02x) detected\n",
ret);
else {
dev_err(chip->dev, "Failed to detect Marvell 88PM8607. "
"Chip ID: %02x\n", ret);
goto out;
}
chip->chip_id = ret;
ret = pm8607_reg_read(chip, PM8607_BUCK3);
if (ret < 0) {
dev_err(chip->dev, "Failed to read BUCK3 register: %d\n", ret);
goto out;
}
if (ret & PM8607_BUCK3_DOUBLE)
chip->buck3_double = 1;
ret = pm8607_reg_read(chip, PM8607_MISC1);
if (ret < 0) {
dev_err(chip->dev, "Failed to read MISC1 register: %d\n", ret);
goto out;
}
if (pdata->i2c_port == PI2C_PORT)
ret |= PM8607_MISC1_PI2C;
else
ret &= ~PM8607_MISC1_PI2C;
ret = pm8607_reg_write(chip, PM8607_MISC1, ret);
if (ret < 0) {
dev_err(chip->dev, "Failed to write MISC1 register: %d\n", ret);
goto out;
}
count = ARRAY_SIZE(pm8607_devs);
for (i = 0; i < count; i++) {
ret = mfd_add_devices(chip->dev, i, &pm8607_devs[i],
1, NULL, 0);
if (ret != 0) {
dev_err(chip->dev, "Failed to add subdevs\n");
goto out;
}
}
return 0;
out:
i2c_set_clientdata(client, NULL);
kfree(chip);
return ret;
}
static int __devexit pm8607_remove(struct i2c_client *client)
{
struct pm8607_chip *chip = i2c_get_clientdata(client);
mfd_remove_devices(chip->dev);
kfree(chip);
return 0;
}
static struct i2c_driver pm8607_driver = {
.driver = {
.name = "88PM8607",
.owner = THIS_MODULE,
},
.probe = pm8607_probe,
.remove = __devexit_p(pm8607_remove),
.id_table = pm8607_id_table,
};
static int __init pm8607_init(void)
{
int ret;
ret = i2c_add_driver(&pm8607_driver);
if (ret != 0)
pr_err("Failed to register 88PM8607 I2C driver: %d\n", ret);
return ret;
}
subsys_initcall(pm8607_init);
static void __exit pm8607_exit(void)
{
i2c_del_driver(&pm8607_driver);
}
module_exit(pm8607_exit);
MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM8607");
MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
MODULE_LICENSE("GPL");
......@@ -319,6 +319,16 @@ config EZX_PCAP
This enables the PCAP ASIC present on EZX Phones. This is
needed for MMC, TouchScreen, Sound, USB, etc..
config MFD_88PM8607
bool "Support Marvell 88PM8607"
depends on I2C
select MFD_CORE
help
This supports for Marvell 88PM8607 Power Management IC. This includes
the I2C driver and the core APIs _only_, you have to select
individual components like voltage regulators, RTC and
battery-charger under the corresponding menus.
endmenu
menu "Multimedia Capabilities Port drivers"
......
......@@ -52,3 +52,4 @@ obj-$(CONFIG_PCF50633_ADC) += pcf50633-adc.o
obj-$(CONFIG_PCF50633_GPIO) += pcf50633-gpio.o
obj-$(CONFIG_AB3100_CORE) += ab3100-core.o
obj-$(CONFIG_AB3100_OTP) += ab3100-otp.o
obj-$(CONFIG_MFD_88PM8607) += 88pm8607.o
/*
* Marvell 88PM8607 Interface
*
* Copyright (C) 2009 Marvell International Ltd.
* Haojian Zhuang <haojian.zhuang@marvell.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 by the Free Software Foundation.
*/
#ifndef __LINUX_MFD_88PM8607_H
#define __LINUX_MFD_88PM8607_H
enum {
PM8607_ID_BUCK1 = 0,
PM8607_ID_BUCK2,
PM8607_ID_BUCK3,
PM8607_ID_LDO1,
PM8607_ID_LDO2,
PM8607_ID_LDO3,
PM8607_ID_LDO4,
PM8607_ID_LDO5,
PM8607_ID_LDO6,
PM8607_ID_LDO7,
PM8607_ID_LDO8,
PM8607_ID_LDO9,
PM8607_ID_LDO10,
PM8607_ID_LDO12,
PM8607_ID_LDO14,
PM8607_ID_RG_MAX,
};
#define CHIP_ID (0x40)
#define CHIP_ID_MASK (0xF8)
/* Interrupt Registers */
#define PM8607_STATUS_1 (0x01)
#define PM8607_STATUS_2 (0x02)
#define PM8607_INT_STATUS1 (0x03)
#define PM8607_INT_STATUS2 (0x04)
#define PM8607_INT_STATUS3 (0x05)
#define PM8607_INT_MASK_1 (0x06)
#define PM8607_INT_MASK_2 (0x07)
#define PM8607_INT_MASK_3 (0x08)
/* Regulator Control Registers */
#define PM8607_LDO1 (0x10)
#define PM8607_LDO2 (0x11)
#define PM8607_LDO3 (0x12)
#define PM8607_LDO4 (0x13)
#define PM8607_LDO5 (0x14)
#define PM8607_LDO6 (0x15)
#define PM8607_LDO7 (0x16)
#define PM8607_LDO8 (0x17)
#define PM8607_LDO9 (0x18)
#define PM8607_LDO10 (0x19)
#define PM8607_LDO12 (0x1A)
#define PM8607_LDO14 (0x1B)
#define PM8607_SLEEP_MODE1 (0x1C)
#define PM8607_SLEEP_MODE2 (0x1D)
#define PM8607_SLEEP_MODE3 (0x1E)
#define PM8607_SLEEP_MODE4 (0x1F)
#define PM8607_GO (0x20)
#define PM8607_SLEEP_BUCK1 (0x21)
#define PM8607_SLEEP_BUCK2 (0x22)
#define PM8607_SLEEP_BUCK3 (0x23)
#define PM8607_BUCK1 (0x24)
#define PM8607_BUCK2 (0x25)
#define PM8607_BUCK3 (0x26)
#define PM8607_BUCK_CONTROLS (0x27)
#define PM8607_SUPPLIES_EN11 (0x2B)
#define PM8607_SUPPLIES_EN12 (0x2C)
#define PM8607_GROUP1 (0x2D)
#define PM8607_GROUP2 (0x2E)
#define PM8607_GROUP3 (0x2F)
#define PM8607_GROUP4 (0x30)
#define PM8607_GROUP5 (0x31)
#define PM8607_GROUP6 (0x32)
#define PM8607_SUPPLIES_EN21 (0x33)
#define PM8607_SUPPLIES_EN22 (0x34)
/* RTC Control Registers */
#define PM8607_RTC1 (0xA0)
#define PM8607_RTC_COUNTER1 (0xA1)
#define PM8607_RTC_COUNTER2 (0xA2)
#define PM8607_RTC_COUNTER3 (0xA3)
#define PM8607_RTC_COUNTER4 (0xA4)
#define PM8607_RTC_EXPIRE1 (0xA5)
#define PM8607_RTC_EXPIRE2 (0xA6)
#define PM8607_RTC_EXPIRE3 (0xA7)
#define PM8607_RTC_EXPIRE4 (0xA8)
#define PM8607_RTC_TRIM1 (0xA9)
#define PM8607_RTC_TRIM2 (0xAA)
#define PM8607_RTC_TRIM3 (0xAB)
#define PM8607_RTC_TRIM4 (0xAC)
#define PM8607_RTC_MISC1 (0xAD)
#define PM8607_RTC_MISC2 (0xAE)
#define PM8607_RTC_MISC3 (0xAF)
/* Misc Registers */
#define PM8607_CHIP_ID (0x00)
#define PM8607_LDO1 (0x10)
#define PM8607_DVC3 (0x26)
#define PM8607_MISC1 (0x40)
/* bit definitions for PM8607 events */
#define PM8607_EVENT_ONKEY (1 << 0)
#define PM8607_EVENT_EXTON (1 << 1)
#define PM8607_EVENT_CHG (1 << 2)
#define PM8607_EVENT_BAT (1 << 3)
#define PM8607_EVENT_RTC (1 << 4)
#define PM8607_EVENT_CC (1 << 5)
#define PM8607_EVENT_VBAT (1 << 8)
#define PM8607_EVENT_VCHG (1 << 9)
#define PM8607_EVENT_VSYS (1 << 10)
#define PM8607_EVENT_TINT (1 << 11)
#define PM8607_EVENT_GPADC0 (1 << 12)
#define PM8607_EVENT_GPADC1 (1 << 13)
#define PM8607_EVENT_GPADC2 (1 << 14)
#define PM8607_EVENT_GPADC3 (1 << 15)
#define PM8607_EVENT_AUDIO_SHORT (1 << 16)
#define PM8607_EVENT_PEN (1 << 17)
#define PM8607_EVENT_HEADSET (1 << 18)
#define PM8607_EVENT_HOOK (1 << 19)
#define PM8607_EVENT_MICIN (1 << 20)
#define PM8607_EVENT_CHG_TIMEOUT (1 << 21)
#define PM8607_EVENT_CHG_DONE (1 << 22)
#define PM8607_EVENT_CHG_FAULT (1 << 23)
/* bit definitions of Status Query Interface */
#define PM8607_STATUS_CC (1 << 3)
#define PM8607_STATUS_PEN (1 << 4)
#define PM8607_STATUS_HEADSET (1 << 5)
#define PM8607_STATUS_HOOK (1 << 6)
#define PM8607_STATUS_MICIN (1 << 7)
#define PM8607_STATUS_ONKEY (1 << 8)
#define PM8607_STATUS_EXTON (1 << 9)
#define PM8607_STATUS_CHG (1 << 10)
#define PM8607_STATUS_BAT (1 << 11)
#define PM8607_STATUS_VBUS (1 << 12)
#define PM8607_STATUS_OV (1 << 13)
/* bit definitions of BUCK3 */
#define PM8607_BUCK3_DOUBLE (1 << 6)
/* bit definitions of Misc1 */
#define PM8607_MISC1_PI2C (1 << 0)
/* Interrupt Number in 88PM8607 */
enum {
PM8607_IRQ_ONKEY = 0,
PM8607_IRQ_EXTON,
PM8607_IRQ_CHG,
PM8607_IRQ_BAT,
PM8607_IRQ_RTC,
PM8607_IRQ_VBAT = 8,
PM8607_IRQ_VCHG,
PM8607_IRQ_VSYS,
PM8607_IRQ_TINT,
PM8607_IRQ_GPADC0,
PM8607_IRQ_GPADC1,
PM8607_IRQ_GPADC2,
PM8607_IRQ_GPADC3,
PM8607_IRQ_AUDIO_SHORT = 16,
PM8607_IRQ_PEN,
PM8607_IRQ_HEADSET,
PM8607_IRQ_HOOK,
PM8607_IRQ_MICIN,
PM8607_IRQ_CHG_FAIL,
PM8607_IRQ_CHG_DONE,
PM8607_IRQ_CHG_FAULT,
};
enum {
PM8607_CHIP_A0 = 0x40,
PM8607_CHIP_A1 = 0x41,
PM8607_CHIP_B0 = 0x48,
};
struct pm8607_chip {
struct device *dev;
struct mutex io_lock;
struct i2c_client *client;
int (*read)(struct pm8607_chip *chip, int reg, int bytes, void *dest);
int (*write)(struct pm8607_chip *chip, int reg, int bytes, void *src);
int buck3_double; /* DVC ramp slope double */
unsigned char chip_id;
};
#define PM8607_MAX_REGULATOR 15 /* 3 Bucks, 12 LDOs */
enum {
GI2C_PORT = 0,
PI2C_PORT,
};
struct pm8607_platform_data {
int i2c_port; /* Controlled by GI2C or PI2C */
struct regulator_init_data *regulator[PM8607_MAX_REGULATOR];
};
extern int pm8607_reg_read(struct pm8607_chip *, int);
extern int pm8607_reg_write(struct pm8607_chip *, int, unsigned char);
extern int pm8607_bulk_read(struct pm8607_chip *, int, int,
unsigned char *);
extern int pm8607_bulk_write(struct pm8607_chip *, int, int,
unsigned char *);
extern int pm8607_set_bits(struct pm8607_chip *, int, unsigned char,
unsigned char);
#endif /* __LINUX_MFD_88PM8607_H */
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