Commit f5714dc9 authored by Balaji Rao's avatar Balaji Rao Committed by Samuel Ortiz

power_supply: PCF50633 battery charger driver

Signed-off-by: default avatarBalaji Rao <balajirrao@openmoko.org>
Cc: Andy Green <andy@openmoko.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Acked-by: default avatarAnton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@openedhand.com>
parent eae854b2
......@@ -82,4 +82,10 @@ config BATTERY_DA9030
Say Y here to enable support for batteries charger integrated into
DA9030 PMIC.
config CHARGER_PCF50633
tristate "NXP PCF50633 MBC"
depends on MFD_PCF50633
help
Say Y to include support for NXP PCF50633 Main Battery Charger.
endif # POWER_SUPPLY
......@@ -25,3 +25,4 @@ obj-$(CONFIG_BATTERY_TOSA) += tosa_battery.o
obj-$(CONFIG_BATTERY_WM97XX) += wm97xx_battery.o
obj-$(CONFIG_BATTERY_BQ27x00) += bq27x00_battery.o
obj-$(CONFIG_BATTERY_DA9030) += da9030_battery.o
obj-$(CONFIG_CHARGER_PCF50633) += pcf50633-charger.o
\ No newline at end of file
/* NXP PCF50633 Main Battery Charger Driver
*
* (C) 2006-2008 by Openmoko, Inc.
* Author: Balaji Rao <balajirrao@openmoko.org>
* All rights reserved.
*
* Broken down from monstrous PCF50633 driver mainly by
* Harald Welte, Andy Green and Werner Almesberger
*
* 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.
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/device.h>
#include <linux/sysfs.h>
#include <linux/platform_device.h>
#include <linux/power_supply.h>
#include <linux/mfd/pcf50633/core.h>
#include <linux/mfd/pcf50633/mbc.h>
struct pcf50633_mbc {
struct pcf50633 *pcf;
int adapter_active;
int adapter_online;
int usb_active;
int usb_online;
struct power_supply usb;
struct power_supply adapter;
};
int pcf50633_mbc_usb_curlim_set(struct pcf50633 *pcf, int ma)
{
struct pcf50633_mbc *mbc = platform_get_drvdata(pcf->mbc_pdev);
int ret = 0;
u8 bits;
if (ma >= 1000)
bits = PCF50633_MBCC7_USB_1000mA;
else if (ma >= 500)
bits = PCF50633_MBCC7_USB_500mA;
else if (ma >= 100)
bits = PCF50633_MBCC7_USB_100mA;
else
bits = PCF50633_MBCC7_USB_SUSPEND;
ret = pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC7,
PCF50633_MBCC7_USB_MASK, bits);
if (ret)
dev_err(pcf->dev, "error setting usb curlim to %d mA\n", ma);
else
dev_info(pcf->dev, "usb curlim to %d mA\n", ma);
power_supply_changed(&mbc->usb);
return ret;
}
EXPORT_SYMBOL_GPL(pcf50633_mbc_usb_curlim_set);
int pcf50633_mbc_get_status(struct pcf50633 *pcf)
{
struct pcf50633_mbc *mbc = platform_get_drvdata(pcf->mbc_pdev);
int status = 0;
if (mbc->usb_online)
status |= PCF50633_MBC_USB_ONLINE;
if (mbc->usb_active)
status |= PCF50633_MBC_USB_ACTIVE;
if (mbc->adapter_online)
status |= PCF50633_MBC_ADAPTER_ONLINE;
if (mbc->adapter_active)
status |= PCF50633_MBC_ADAPTER_ACTIVE;
return status;
}
EXPORT_SYMBOL_GPL(pcf50633_mbc_get_status);
void pcf50633_mbc_set_status(struct pcf50633 *pcf, int what, int status)
{
struct pcf50633_mbc *mbc = platform_get_drvdata(pcf->mbc_pdev);
if (what & PCF50633_MBC_USB_ONLINE)
mbc->usb_online = !!status;
if (what & PCF50633_MBC_USB_ACTIVE)
mbc->usb_active = !!status;
if (what & PCF50633_MBC_ADAPTER_ONLINE)
mbc->adapter_online = !!status;
if (what & PCF50633_MBC_ADAPTER_ACTIVE)
mbc->adapter_active = !!status;
}
EXPORT_SYMBOL_GPL(pcf50633_mbc_set_status);
static ssize_t
show_chgmode(struct device *dev, struct device_attribute *attr, char *buf)
{
struct pcf50633_mbc *mbc = dev_get_drvdata(dev);
u8 mbcs2 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS2);
u8 chgmod = (mbcs2 & PCF50633_MBCS2_MBC_MASK);
return sprintf(buf, "%d\n", chgmod);
}
static DEVICE_ATTR(chgmode, S_IRUGO, show_chgmode, NULL);
static ssize_t
show_usblim(struct device *dev, struct device_attribute *attr, char *buf)
{
struct pcf50633_mbc *mbc = dev_get_drvdata(dev);
u8 usblim = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCC7) &
PCF50633_MBCC7_USB_MASK;
unsigned int ma;
if (usblim == PCF50633_MBCC7_USB_1000mA)
ma = 1000;
else if (usblim == PCF50633_MBCC7_USB_500mA)
ma = 500;
else if (usblim == PCF50633_MBCC7_USB_100mA)
ma = 100;
else
ma = 0;
return sprintf(buf, "%u\n", ma);
}
static ssize_t set_usblim(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct pcf50633_mbc *mbc = dev_get_drvdata(dev);
unsigned long ma;
int ret;
ret = strict_strtoul(buf, 10, &ma);
if (ret)
return -EINVAL;
pcf50633_mbc_usb_curlim_set(mbc->pcf, ma);
return count;
}
static DEVICE_ATTR(usb_curlim, S_IRUGO | S_IWUSR, show_usblim, set_usblim);
static struct attribute *pcf50633_mbc_sysfs_entries[] = {
&dev_attr_chgmode.attr,
&dev_attr_usb_curlim.attr,
NULL,
};
static struct attribute_group mbc_attr_group = {
.name = NULL, /* put in device directory */
.attrs = pcf50633_mbc_sysfs_entries,
};
static void
pcf50633_mbc_irq_handler(int irq, void *data)
{
struct pcf50633_mbc *mbc = data;
/* USB */
if (irq == PCF50633_IRQ_USBINS) {
mbc->usb_online = 1;
} else if (irq == PCF50633_IRQ_USBREM) {
mbc->usb_online = 0;
mbc->usb_active = 0;
pcf50633_mbc_usb_curlim_set(mbc->pcf, 0);
}
/* Adapter */
if (irq == PCF50633_IRQ_ADPINS) {
mbc->adapter_online = 1;
mbc->adapter_active = 1;
} else if (irq == PCF50633_IRQ_ADPREM) {
mbc->adapter_online = 0;
mbc->adapter_active = 0;
}
if (irq == PCF50633_IRQ_BATFULL) {
mbc->usb_active = 0;
mbc->adapter_active = 0;
}
power_supply_changed(&mbc->usb);
power_supply_changed(&mbc->adapter);
if (mbc->pcf->pdata->mbc_event_callback)
mbc->pcf->pdata->mbc_event_callback(mbc->pcf, irq);
}
static int adapter_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct pcf50633_mbc *mbc = container_of(psy, struct pcf50633_mbc, usb);
int ret = 0;
switch (psp) {
case POWER_SUPPLY_PROP_ONLINE:
val->intval = mbc->adapter_online;
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static int usb_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct pcf50633_mbc *mbc = container_of(psy, struct pcf50633_mbc, usb);
int ret = 0;
switch (psp) {
case POWER_SUPPLY_PROP_ONLINE:
val->intval = mbc->usb_online;
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static enum power_supply_property power_props[] = {
POWER_SUPPLY_PROP_ONLINE,
};
static const u8 mbc_irq_handlers[] = {
PCF50633_IRQ_ADPINS,
PCF50633_IRQ_ADPREM,
PCF50633_IRQ_USBINS,
PCF50633_IRQ_USBREM,
PCF50633_IRQ_BATFULL,
PCF50633_IRQ_CHGHALT,
PCF50633_IRQ_THLIMON,
PCF50633_IRQ_THLIMOFF,
PCF50633_IRQ_USBLIMON,
PCF50633_IRQ_USBLIMOFF,
PCF50633_IRQ_LOWSYS,
PCF50633_IRQ_LOWBAT,
};
static int __devinit pcf50633_mbc_probe(struct platform_device *pdev)
{
struct pcf50633_mbc *mbc;
struct pcf50633_subdev_pdata *pdata = pdev->dev.platform_data;
int ret;
int i;
u8 mbcs1;
mbc = kzalloc(sizeof(*mbc), GFP_KERNEL);
if (!mbc)
return -ENOMEM;
platform_set_drvdata(pdev, mbc);
mbc->pcf = pdata->pcf;
/* Set up IRQ handlers */
for (i = 0; i < ARRAY_SIZE(mbc_irq_handlers); i++)
pcf50633_register_irq(mbc->pcf, mbc_irq_handlers[i],
pcf50633_mbc_irq_handler, mbc);
/* Create power supplies */
mbc->adapter.name = "adapter";
mbc->adapter.type = POWER_SUPPLY_TYPE_MAINS;
mbc->adapter.properties = power_props;
mbc->adapter.num_properties = ARRAY_SIZE(power_props);
mbc->adapter.get_property = &adapter_get_property;
mbc->adapter.supplied_to = mbc->pcf->pdata->batteries;
mbc->adapter.num_supplicants = mbc->pcf->pdata->num_batteries;
mbc->usb.name = "usb";
mbc->usb.type = POWER_SUPPLY_TYPE_USB;
mbc->usb.properties = power_props;
mbc->usb.num_properties = ARRAY_SIZE(power_props);
mbc->usb.get_property = usb_get_property;
mbc->usb.supplied_to = mbc->pcf->pdata->batteries;
mbc->usb.num_supplicants = mbc->pcf->pdata->num_batteries;
ret = power_supply_register(&pdev->dev, &mbc->adapter);
if (ret) {
dev_err(mbc->pcf->dev, "failed to register adapter\n");
kfree(mbc);
return ret;
}
ret = power_supply_register(&pdev->dev, &mbc->usb);
if (ret) {
dev_err(mbc->pcf->dev, "failed to register usb\n");
power_supply_unregister(&mbc->adapter);
kfree(mbc);
return ret;
}
ret = sysfs_create_group(&pdev->dev.kobj, &mbc_attr_group);
if (ret)
dev_err(mbc->pcf->dev, "failed to create sysfs entries\n");
mbcs1 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS1);
if (mbcs1 & PCF50633_MBCS1_USBPRES)
pcf50633_mbc_irq_handler(PCF50633_IRQ_USBINS, mbc);
if (mbcs1 & PCF50633_MBCS1_ADAPTPRES)
pcf50633_mbc_irq_handler(PCF50633_IRQ_ADPINS, mbc);
return 0;
}
static int __devexit pcf50633_mbc_remove(struct platform_device *pdev)
{
struct pcf50633_mbc *mbc = platform_get_drvdata(pdev);
int i;
/* Remove IRQ handlers */
for (i = 0; i < ARRAY_SIZE(mbc_irq_handlers); i++)
pcf50633_free_irq(mbc->pcf, mbc_irq_handlers[i]);
power_supply_unregister(&mbc->usb);
power_supply_unregister(&mbc->adapter);
kfree(mbc);
return 0;
}
static struct platform_driver pcf50633_mbc_driver = {
.driver = {
.name = "pcf50633-mbc",
},
.probe = pcf50633_mbc_probe,
.remove = __devexit_p(pcf50633_mbc_remove),
};
static int __init pcf50633_mbc_init(void)
{
return platform_driver_register(&pcf50633_mbc_driver);
}
module_init(pcf50633_mbc_init);
static void __exit pcf50633_mbc_exit(void)
{
platform_driver_unregister(&pcf50633_mbc_driver);
}
module_exit(pcf50633_mbc_exit);
MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
MODULE_DESCRIPTION("PCF50633 mbc driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:pcf50633-mbc");
/*
* mbc.h -- Driver for NXP PCF50633 Main Battery Charger
*
* (C) 2006-2008 by Openmoko, Inc.
* All rights reserved.
*
* 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.
*/
#ifndef __LINUX_MFD_PCF50633_MBC_H
#define __LINUX_MFD_PCF50633_MBC_H
#include <linux/mfd/pcf50633/core.h>
#include <linux/platform_device.h>
#define PCF50633_REG_MBCC1 0x43
#define PCF50633_REG_MBCC2 0x44
#define PCF50633_REG_MBCC3 0x45
#define PCF50633_REG_MBCC4 0x46
#define PCF50633_REG_MBCC5 0x47
#define PCF50633_REG_MBCC6 0x48
#define PCF50633_REG_MBCC7 0x49
#define PCF50633_REG_MBCC8 0x4a
#define PCF50633_REG_MBCS1 0x4b
#define PCF50633_REG_MBCS2 0x4c
#define PCF50633_REG_MBCS3 0x4d
enum pcf50633_reg_mbcc1 {
PCF50633_MBCC1_CHGENA = 0x01, /* Charger enable */
PCF50633_MBCC1_AUTOSTOP = 0x02,
PCF50633_MBCC1_AUTORES = 0x04, /* automatic resume */
PCF50633_MBCC1_RESUME = 0x08, /* explicit resume cmd */
PCF50633_MBCC1_RESTART = 0x10, /* restart charging */
PCF50633_MBCC1_PREWDTIME_60M = 0x20, /* max. precharging time */
PCF50633_MBCC1_WDTIME_1H = 0x00,
PCF50633_MBCC1_WDTIME_2H = 0x40,
PCF50633_MBCC1_WDTIME_4H = 0x80,
PCF50633_MBCC1_WDTIME_6H = 0xc0,
};
#define PCF50633_MBCC1_WDTIME_MASK 0xc0
enum pcf50633_reg_mbcc2 {
PCF50633_MBCC2_VBATCOND_2V7 = 0x00,
PCF50633_MBCC2_VBATCOND_2V85 = 0x01,
PCF50633_MBCC2_VBATCOND_3V0 = 0x02,
PCF50633_MBCC2_VBATCOND_3V15 = 0x03,
PCF50633_MBCC2_VMAX_4V = 0x00,
PCF50633_MBCC2_VMAX_4V20 = 0x28,
PCF50633_MBCC2_VRESDEBTIME_64S = 0x80, /* debounce time (32/64sec) */
};
enum pcf50633_reg_mbcc7 {
PCF50633_MBCC7_USB_100mA = 0x00,
PCF50633_MBCC7_USB_500mA = 0x01,
PCF50633_MBCC7_USB_1000mA = 0x02,
PCF50633_MBCC7_USB_SUSPEND = 0x03,
PCF50633_MBCC7_BATTEMP_EN = 0x04,
PCF50633_MBCC7_BATSYSIMAX_1A6 = 0x00,
PCF50633_MBCC7_BATSYSIMAX_1A8 = 0x40,
PCF50633_MBCC7_BATSYSIMAX_2A0 = 0x80,
PCF50633_MBCC7_BATSYSIMAX_2A2 = 0xc0,
};
#define PCF50633_MBCC7_USB_MASK 0x03
enum pcf50633_reg_mbcc8 {
PCF50633_MBCC8_USBENASUS = 0x10,
};
enum pcf50633_reg_mbcs1 {
PCF50633_MBCS1_USBPRES = 0x01,
PCF50633_MBCS1_USBOK = 0x02,
PCF50633_MBCS1_ADAPTPRES = 0x04,
PCF50633_MBCS1_ADAPTOK = 0x08,
PCF50633_MBCS1_TBAT_OK = 0x00,
PCF50633_MBCS1_TBAT_ABOVE = 0x10,
PCF50633_MBCS1_TBAT_BELOW = 0x20,
PCF50633_MBCS1_TBAT_UNDEF = 0x30,
PCF50633_MBCS1_PREWDTEXP = 0x40,
PCF50633_MBCS1_WDTEXP = 0x80,
};
enum pcf50633_reg_mbcs2_mbcmod {
PCF50633_MBCS2_MBC_PLAY = 0x00,
PCF50633_MBCS2_MBC_USB_PRE = 0x01,
PCF50633_MBCS2_MBC_USB_PRE_WAIT = 0x02,
PCF50633_MBCS2_MBC_USB_FAST = 0x03,
PCF50633_MBCS2_MBC_USB_FAST_WAIT = 0x04,
PCF50633_MBCS2_MBC_USB_SUSPEND = 0x05,
PCF50633_MBCS2_MBC_ADP_PRE = 0x06,
PCF50633_MBCS2_MBC_ADP_PRE_WAIT = 0x07,
PCF50633_MBCS2_MBC_ADP_FAST = 0x08,
PCF50633_MBCS2_MBC_ADP_FAST_WAIT = 0x09,
PCF50633_MBCS2_MBC_BAT_FULL = 0x0a,
PCF50633_MBCS2_MBC_HALT = 0x0b,
};
#define PCF50633_MBCS2_MBC_MASK 0x0f
enum pcf50633_reg_mbcs2_chgstat {
PCF50633_MBCS2_CHGS_NONE = 0x00,
PCF50633_MBCS2_CHGS_ADAPTER = 0x10,
PCF50633_MBCS2_CHGS_USB = 0x20,
PCF50633_MBCS2_CHGS_BOTH = 0x30,
};
#define PCF50633_MBCS2_RESSTAT_AUTO 0x40
enum pcf50633_reg_mbcs3 {
PCF50633_MBCS3_USBLIM_PLAY = 0x01,
PCF50633_MBCS3_USBLIM_CGH = 0x02,
PCF50633_MBCS3_TLIM_PLAY = 0x04,
PCF50633_MBCS3_TLIM_CHG = 0x08,
PCF50633_MBCS3_ILIM = 0x10, /* 1: Ibat > Icutoff */
PCF50633_MBCS3_VLIM = 0x20, /* 1: Vbat == Vmax */
PCF50633_MBCS3_VBATSTAT = 0x40, /* 1: Vbat > Vbatcond */
PCF50633_MBCS3_VRES = 0x80, /* 1: Vbat > Vth(RES) */
};
#define PCF50633_MBCC2_VBATCOND_MASK 0x03
#define PCF50633_MBCC2_VMAX_MASK 0x3c
/* Charger status */
#define PCF50633_MBC_USB_ONLINE 0x01
#define PCF50633_MBC_USB_ACTIVE 0x02
#define PCF50633_MBC_ADAPTER_ONLINE 0x04
#define PCF50633_MBC_ADAPTER_ACTIVE 0x08
int pcf50633_mbc_usb_curlim_set(struct pcf50633 *pcf, int ma);
int pcf50633_mbc_get_status(struct pcf50633 *);
void pcf50633_mbc_set_status(struct pcf50633 *, int what, int status);
#endif
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