power_supply: PCF50633 battery charger driver
Signed-off-by: Balaji Rao <balajirrao@openmoko.org> Cc: Andy Green <andy@openmoko.com> Cc: David Woodhouse <dwmw2@infradead.org> Acked-by: Anton Vorontsov <cbouatmailru@gmail.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
This commit is contained in:
Balaji Rao
Samuel Ortiz
parent
eae854b22d
commit
f5714dc97d
4 changed files with 499 additions and 0 deletions
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@ -82,4 +82,10 @@ config BATTERY_DA9030
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Say Y here to enable support for batteries charger integrated into
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DA9030 PMIC.
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config CHARGER_PCF50633
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tristate "NXP PCF50633 MBC"
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depends on MFD_PCF50633
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help
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Say Y to include support for NXP PCF50633 Main Battery Charger.
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endif # POWER_SUPPLY
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@ -25,3 +25,4 @@ obj-$(CONFIG_BATTERY_TOSA) += tosa_battery.o
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obj-$(CONFIG_BATTERY_WM97XX) += wm97xx_battery.o
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obj-$(CONFIG_BATTERY_BQ27x00) += bq27x00_battery.o
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obj-$(CONFIG_BATTERY_DA9030) += da9030_battery.o
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obj-$(CONFIG_CHARGER_PCF50633) += pcf50633-charger.o
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358
drivers/power/pcf50633-charger.c
Normal file
358
drivers/power/pcf50633-charger.c
Normal file
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@ -0,0 +1,358 @@
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/* NXP PCF50633 Main Battery Charger Driver
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*
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* (C) 2006-2008 by Openmoko, Inc.
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* Author: Balaji Rao <balajirrao@openmoko.org>
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* All rights reserved.
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*
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* Broken down from monstrous PCF50633 driver mainly by
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* Harald Welte, Andy Green and Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/device.h>
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#include <linux/sysfs.h>
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#include <linux/platform_device.h>
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#include <linux/power_supply.h>
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#include <linux/mfd/pcf50633/core.h>
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#include <linux/mfd/pcf50633/mbc.h>
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struct pcf50633_mbc {
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struct pcf50633 *pcf;
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int adapter_active;
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int adapter_online;
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int usb_active;
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int usb_online;
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struct power_supply usb;
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struct power_supply adapter;
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};
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int pcf50633_mbc_usb_curlim_set(struct pcf50633 *pcf, int ma)
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{
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struct pcf50633_mbc *mbc = platform_get_drvdata(pcf->mbc_pdev);
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int ret = 0;
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u8 bits;
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if (ma >= 1000)
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bits = PCF50633_MBCC7_USB_1000mA;
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else if (ma >= 500)
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bits = PCF50633_MBCC7_USB_500mA;
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else if (ma >= 100)
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bits = PCF50633_MBCC7_USB_100mA;
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else
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bits = PCF50633_MBCC7_USB_SUSPEND;
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ret = pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC7,
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PCF50633_MBCC7_USB_MASK, bits);
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if (ret)
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dev_err(pcf->dev, "error setting usb curlim to %d mA\n", ma);
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else
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dev_info(pcf->dev, "usb curlim to %d mA\n", ma);
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power_supply_changed(&mbc->usb);
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return ret;
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}
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EXPORT_SYMBOL_GPL(pcf50633_mbc_usb_curlim_set);
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int pcf50633_mbc_get_status(struct pcf50633 *pcf)
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{
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struct pcf50633_mbc *mbc = platform_get_drvdata(pcf->mbc_pdev);
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int status = 0;
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if (mbc->usb_online)
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status |= PCF50633_MBC_USB_ONLINE;
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if (mbc->usb_active)
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status |= PCF50633_MBC_USB_ACTIVE;
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if (mbc->adapter_online)
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status |= PCF50633_MBC_ADAPTER_ONLINE;
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if (mbc->adapter_active)
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status |= PCF50633_MBC_ADAPTER_ACTIVE;
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return status;
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}
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EXPORT_SYMBOL_GPL(pcf50633_mbc_get_status);
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void pcf50633_mbc_set_status(struct pcf50633 *pcf, int what, int status)
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{
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struct pcf50633_mbc *mbc = platform_get_drvdata(pcf->mbc_pdev);
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if (what & PCF50633_MBC_USB_ONLINE)
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mbc->usb_online = !!status;
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if (what & PCF50633_MBC_USB_ACTIVE)
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mbc->usb_active = !!status;
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if (what & PCF50633_MBC_ADAPTER_ONLINE)
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mbc->adapter_online = !!status;
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if (what & PCF50633_MBC_ADAPTER_ACTIVE)
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mbc->adapter_active = !!status;
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}
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EXPORT_SYMBOL_GPL(pcf50633_mbc_set_status);
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static ssize_t
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show_chgmode(struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct pcf50633_mbc *mbc = dev_get_drvdata(dev);
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u8 mbcs2 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS2);
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u8 chgmod = (mbcs2 & PCF50633_MBCS2_MBC_MASK);
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return sprintf(buf, "%d\n", chgmod);
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}
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static DEVICE_ATTR(chgmode, S_IRUGO, show_chgmode, NULL);
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static ssize_t
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show_usblim(struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct pcf50633_mbc *mbc = dev_get_drvdata(dev);
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u8 usblim = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCC7) &
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PCF50633_MBCC7_USB_MASK;
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unsigned int ma;
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if (usblim == PCF50633_MBCC7_USB_1000mA)
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ma = 1000;
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else if (usblim == PCF50633_MBCC7_USB_500mA)
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ma = 500;
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else if (usblim == PCF50633_MBCC7_USB_100mA)
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ma = 100;
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else
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ma = 0;
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return sprintf(buf, "%u\n", ma);
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}
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static ssize_t set_usblim(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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struct pcf50633_mbc *mbc = dev_get_drvdata(dev);
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unsigned long ma;
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int ret;
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ret = strict_strtoul(buf, 10, &ma);
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if (ret)
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return -EINVAL;
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pcf50633_mbc_usb_curlim_set(mbc->pcf, ma);
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return count;
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}
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static DEVICE_ATTR(usb_curlim, S_IRUGO | S_IWUSR, show_usblim, set_usblim);
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static struct attribute *pcf50633_mbc_sysfs_entries[] = {
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&dev_attr_chgmode.attr,
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&dev_attr_usb_curlim.attr,
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NULL,
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};
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static struct attribute_group mbc_attr_group = {
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.name = NULL, /* put in device directory */
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.attrs = pcf50633_mbc_sysfs_entries,
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};
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static void
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pcf50633_mbc_irq_handler(int irq, void *data)
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{
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struct pcf50633_mbc *mbc = data;
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/* USB */
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if (irq == PCF50633_IRQ_USBINS) {
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mbc->usb_online = 1;
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} else if (irq == PCF50633_IRQ_USBREM) {
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mbc->usb_online = 0;
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mbc->usb_active = 0;
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pcf50633_mbc_usb_curlim_set(mbc->pcf, 0);
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}
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/* Adapter */
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if (irq == PCF50633_IRQ_ADPINS) {
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mbc->adapter_online = 1;
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mbc->adapter_active = 1;
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} else if (irq == PCF50633_IRQ_ADPREM) {
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mbc->adapter_online = 0;
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mbc->adapter_active = 0;
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}
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if (irq == PCF50633_IRQ_BATFULL) {
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mbc->usb_active = 0;
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mbc->adapter_active = 0;
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}
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power_supply_changed(&mbc->usb);
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power_supply_changed(&mbc->adapter);
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if (mbc->pcf->pdata->mbc_event_callback)
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mbc->pcf->pdata->mbc_event_callback(mbc->pcf, irq);
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}
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static int adapter_get_property(struct power_supply *psy,
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enum power_supply_property psp,
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union power_supply_propval *val)
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{
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struct pcf50633_mbc *mbc = container_of(psy, struct pcf50633_mbc, usb);
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int ret = 0;
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switch (psp) {
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case POWER_SUPPLY_PROP_ONLINE:
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val->intval = mbc->adapter_online;
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break;
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default:
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ret = -EINVAL;
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break;
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}
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return ret;
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}
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static int usb_get_property(struct power_supply *psy,
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enum power_supply_property psp,
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union power_supply_propval *val)
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{
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struct pcf50633_mbc *mbc = container_of(psy, struct pcf50633_mbc, usb);
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int ret = 0;
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switch (psp) {
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case POWER_SUPPLY_PROP_ONLINE:
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val->intval = mbc->usb_online;
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break;
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default:
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ret = -EINVAL;
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break;
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}
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return ret;
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}
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static enum power_supply_property power_props[] = {
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POWER_SUPPLY_PROP_ONLINE,
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};
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static const u8 mbc_irq_handlers[] = {
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PCF50633_IRQ_ADPINS,
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PCF50633_IRQ_ADPREM,
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PCF50633_IRQ_USBINS,
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PCF50633_IRQ_USBREM,
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PCF50633_IRQ_BATFULL,
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PCF50633_IRQ_CHGHALT,
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PCF50633_IRQ_THLIMON,
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PCF50633_IRQ_THLIMOFF,
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PCF50633_IRQ_USBLIMON,
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PCF50633_IRQ_USBLIMOFF,
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PCF50633_IRQ_LOWSYS,
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PCF50633_IRQ_LOWBAT,
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};
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static int __devinit pcf50633_mbc_probe(struct platform_device *pdev)
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{
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struct pcf50633_mbc *mbc;
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struct pcf50633_subdev_pdata *pdata = pdev->dev.platform_data;
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int ret;
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int i;
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u8 mbcs1;
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mbc = kzalloc(sizeof(*mbc), GFP_KERNEL);
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if (!mbc)
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return -ENOMEM;
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platform_set_drvdata(pdev, mbc);
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mbc->pcf = pdata->pcf;
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/* Set up IRQ handlers */
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for (i = 0; i < ARRAY_SIZE(mbc_irq_handlers); i++)
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pcf50633_register_irq(mbc->pcf, mbc_irq_handlers[i],
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pcf50633_mbc_irq_handler, mbc);
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/* Create power supplies */
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mbc->adapter.name = "adapter";
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mbc->adapter.type = POWER_SUPPLY_TYPE_MAINS;
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mbc->adapter.properties = power_props;
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mbc->adapter.num_properties = ARRAY_SIZE(power_props);
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mbc->adapter.get_property = &adapter_get_property;
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mbc->adapter.supplied_to = mbc->pcf->pdata->batteries;
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mbc->adapter.num_supplicants = mbc->pcf->pdata->num_batteries;
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mbc->usb.name = "usb";
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mbc->usb.type = POWER_SUPPLY_TYPE_USB;
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mbc->usb.properties = power_props;
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mbc->usb.num_properties = ARRAY_SIZE(power_props);
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mbc->usb.get_property = usb_get_property;
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mbc->usb.supplied_to = mbc->pcf->pdata->batteries;
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mbc->usb.num_supplicants = mbc->pcf->pdata->num_batteries;
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ret = power_supply_register(&pdev->dev, &mbc->adapter);
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if (ret) {
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dev_err(mbc->pcf->dev, "failed to register adapter\n");
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kfree(mbc);
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return ret;
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}
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ret = power_supply_register(&pdev->dev, &mbc->usb);
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if (ret) {
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dev_err(mbc->pcf->dev, "failed to register usb\n");
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power_supply_unregister(&mbc->adapter);
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kfree(mbc);
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return ret;
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}
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ret = sysfs_create_group(&pdev->dev.kobj, &mbc_attr_group);
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if (ret)
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dev_err(mbc->pcf->dev, "failed to create sysfs entries\n");
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mbcs1 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS1);
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if (mbcs1 & PCF50633_MBCS1_USBPRES)
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pcf50633_mbc_irq_handler(PCF50633_IRQ_USBINS, mbc);
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if (mbcs1 & PCF50633_MBCS1_ADAPTPRES)
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pcf50633_mbc_irq_handler(PCF50633_IRQ_ADPINS, mbc);
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return 0;
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}
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static int __devexit pcf50633_mbc_remove(struct platform_device *pdev)
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{
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struct pcf50633_mbc *mbc = platform_get_drvdata(pdev);
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int i;
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/* Remove IRQ handlers */
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for (i = 0; i < ARRAY_SIZE(mbc_irq_handlers); i++)
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pcf50633_free_irq(mbc->pcf, mbc_irq_handlers[i]);
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power_supply_unregister(&mbc->usb);
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power_supply_unregister(&mbc->adapter);
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kfree(mbc);
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return 0;
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}
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static struct platform_driver pcf50633_mbc_driver = {
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.driver = {
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.name = "pcf50633-mbc",
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},
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.probe = pcf50633_mbc_probe,
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.remove = __devexit_p(pcf50633_mbc_remove),
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};
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static int __init pcf50633_mbc_init(void)
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{
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return platform_driver_register(&pcf50633_mbc_driver);
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}
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module_init(pcf50633_mbc_init);
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static void __exit pcf50633_mbc_exit(void)
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{
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platform_driver_unregister(&pcf50633_mbc_driver);
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}
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module_exit(pcf50633_mbc_exit);
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MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
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MODULE_DESCRIPTION("PCF50633 mbc driver");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:pcf50633-mbc");
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134
include/linux/mfd/pcf50633/mbc.h
Normal file
134
include/linux/mfd/pcf50633/mbc.h
Normal file
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@ -0,0 +1,134 @@
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/*
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* mbc.h -- Driver for NXP PCF50633 Main Battery Charger
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*
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* (C) 2006-2008 by Openmoko, Inc.
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#ifndef __LINUX_MFD_PCF50633_MBC_H
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#define __LINUX_MFD_PCF50633_MBC_H
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#include <linux/mfd/pcf50633/core.h>
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#include <linux/platform_device.h>
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#define PCF50633_REG_MBCC1 0x43
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#define PCF50633_REG_MBCC2 0x44
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#define PCF50633_REG_MBCC3 0x45
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#define PCF50633_REG_MBCC4 0x46
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#define PCF50633_REG_MBCC5 0x47
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#define PCF50633_REG_MBCC6 0x48
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#define PCF50633_REG_MBCC7 0x49
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#define PCF50633_REG_MBCC8 0x4a
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#define PCF50633_REG_MBCS1 0x4b
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#define PCF50633_REG_MBCS2 0x4c
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#define PCF50633_REG_MBCS3 0x4d
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enum pcf50633_reg_mbcc1 {
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PCF50633_MBCC1_CHGENA = 0x01, /* Charger enable */
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PCF50633_MBCC1_AUTOSTOP = 0x02,
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PCF50633_MBCC1_AUTORES = 0x04, /* automatic resume */
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PCF50633_MBCC1_RESUME = 0x08, /* explicit resume cmd */
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PCF50633_MBCC1_RESTART = 0x10, /* restart charging */
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PCF50633_MBCC1_PREWDTIME_60M = 0x20, /* max. precharging time */
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PCF50633_MBCC1_WDTIME_1H = 0x00,
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PCF50633_MBCC1_WDTIME_2H = 0x40,
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PCF50633_MBCC1_WDTIME_4H = 0x80,
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PCF50633_MBCC1_WDTIME_6H = 0xc0,
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};
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#define PCF50633_MBCC1_WDTIME_MASK 0xc0
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enum pcf50633_reg_mbcc2 {
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PCF50633_MBCC2_VBATCOND_2V7 = 0x00,
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PCF50633_MBCC2_VBATCOND_2V85 = 0x01,
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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
|
||||
|
||||
Loading…
Reference in a new issue