Merge git://git.infradead.org/battery-2.6
* git://git.infradead.org/battery-2.6: da9030_battery: Fix race between event handler and monitor Add MAX17040 Fuel Gauge driver w1: ds2760_battery: add support for sleep mode feature w1: ds2760: add support for EEPROM read and write ds2760_battery: cleanups in ds2760_battery_probe()
This commit is contained in:
Linus Torvalds
commit
f27884aead
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@ -82,6 +82,14 @@ 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 BATTERY_MAX17040
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tristate "Maxim MAX17040 Fuel Gauge"
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depends on I2C
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help
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MAX17040 is fuel-gauge systems for lithium-ion (Li+) batteries
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in handheld and portable equipment. The MAX17040 is configured
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to operate with a single lithium cell
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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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@ -25,4 +25,5 @@ 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-$(CONFIG_CHARGER_PCF50633) += pcf50633-charger.o
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obj-$(CONFIG_BATTERY_MAX17040) += max17040_battery.o
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obj-$(CONFIG_CHARGER_PCF50633) += pcf50633-charger.o
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@ -22,8 +22,6 @@
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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#define DA9030_STATUS_CHDET (1 << 3)
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#define DA9030_FAULT_LOG 0x0a
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#define DA9030_FAULT_LOG_OVER_TEMP (1 << 7)
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#define DA9030_FAULT_LOG_VBAT_OVER (1 << 4)
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@ -244,6 +242,8 @@ static void da9030_set_charge(struct da9030_charger *charger, int on)
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}
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da903x_write(charger->master, DA9030_CHARGE_CONTROL, val);
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power_supply_changed(&charger->psy);
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}
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static void da9030_charger_check_state(struct da9030_charger *charger)
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@ -258,6 +258,12 @@ static void da9030_charger_check_state(struct da9030_charger *charger)
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da9030_set_charge(charger, 1);
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}
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} else {
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/* Charger has been pulled out */
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if (!charger->chdet) {
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da9030_set_charge(charger, 0);
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return;
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}
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if (charger->adc.vbat_res >=
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charger->thresholds.vbat_charge_stop) {
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da9030_set_charge(charger, 0);
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@ -395,13 +401,11 @@ static int da9030_battery_event(struct notifier_block *nb, unsigned long event,
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{
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struct da9030_charger *charger =
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container_of(nb, struct da9030_charger, nb);
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int status;
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switch (event) {
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case DA9030_EVENT_CHDET:
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status = da903x_query_status(charger->master,
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DA9030_STATUS_CHDET);
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da9030_set_charge(charger, status);
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cancel_delayed_work_sync(&charger->work);
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schedule_work(&charger->work.work);
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break;
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case DA9030_EVENT_VBATMON:
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da9030_battery_vbat_event(charger);
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@ -565,7 +569,8 @@ static int da9030_battery_remove(struct platform_device *dev)
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da903x_unregister_notifier(charger->master, &charger->nb,
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DA9030_EVENT_CHDET | DA9030_EVENT_VBATMON |
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DA9030_EVENT_CHIOVER | DA9030_EVENT_TBAT);
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cancel_delayed_work(&charger->work);
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cancel_delayed_work_sync(&charger->work);
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da9030_set_charge(charger, 0);
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power_supply_unregister(&charger->psy);
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kfree(charger);
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@ -62,6 +62,10 @@ static unsigned int cache_time = 1000;
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module_param(cache_time, uint, 0644);
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MODULE_PARM_DESC(cache_time, "cache time in milliseconds");
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static unsigned int pmod_enabled;
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module_param(pmod_enabled, bool, 0644);
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MODULE_PARM_DESC(pmod_enabled, "PMOD enable bit");
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/* Some batteries have their rated capacity stored a N * 10 mAh, while
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* others use an index into this table. */
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static int rated_capacities[] = {
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@ -259,6 +263,17 @@ static void ds2760_battery_update_status(struct ds2760_device_info *di)
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power_supply_changed(&di->bat);
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}
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static void ds2760_battery_write_status(struct ds2760_device_info *di,
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char status)
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{
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if (status == di->raw[DS2760_STATUS_REG])
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return;
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w1_ds2760_write(di->w1_dev, &status, DS2760_STATUS_WRITE_REG, 1);
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w1_ds2760_store_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1);
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w1_ds2760_recall_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1);
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}
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static void ds2760_battery_work(struct work_struct *work)
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{
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struct ds2760_device_info *di = container_of(work,
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@ -342,9 +357,9 @@ static enum power_supply_property ds2760_battery_props[] = {
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static int ds2760_battery_probe(struct platform_device *pdev)
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{
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char status;
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int retval = 0;
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struct ds2760_device_info *di;
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struct ds2760_platform_data *pdata;
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di = kzalloc(sizeof(*di), GFP_KERNEL);
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if (!di) {
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@ -354,14 +369,13 @@ static int ds2760_battery_probe(struct platform_device *pdev)
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platform_set_drvdata(pdev, di);
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pdata = pdev->dev.platform_data;
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di->dev = &pdev->dev;
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di->w1_dev = pdev->dev.parent;
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di->bat.name = dev_name(&pdev->dev);
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di->bat.type = POWER_SUPPLY_TYPE_BATTERY;
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di->bat.properties = ds2760_battery_props;
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di->bat.num_properties = ARRAY_SIZE(ds2760_battery_props);
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di->bat.get_property = ds2760_battery_get_property;
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di->dev = &pdev->dev;
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di->w1_dev = pdev->dev.parent;
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di->bat.name = dev_name(&pdev->dev);
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di->bat.type = POWER_SUPPLY_TYPE_BATTERY;
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di->bat.properties = ds2760_battery_props;
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di->bat.num_properties = ARRAY_SIZE(ds2760_battery_props);
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di->bat.get_property = ds2760_battery_get_property;
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di->bat.external_power_changed =
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ds2760_battery_external_power_changed;
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@ -373,6 +387,16 @@ static int ds2760_battery_probe(struct platform_device *pdev)
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goto batt_failed;
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}
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/* enable sleep mode feature */
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ds2760_battery_read_status(di);
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status = di->raw[DS2760_STATUS_REG];
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if (pmod_enabled)
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status |= DS2760_STATUS_PMOD;
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else
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status &= ~DS2760_STATUS_PMOD;
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ds2760_battery_write_status(di, status);
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INIT_DELAYED_WORK(&di->monitor_work, ds2760_battery_work);
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di->monitor_wqueue = create_singlethread_workqueue(dev_name(&pdev->dev));
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if (!di->monitor_wqueue) {
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@ -0,0 +1,309 @@
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/*
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* max17040_battery.c
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* fuel-gauge systems for lithium-ion (Li+) batteries
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*
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* Copyright (C) 2009 Samsung Electronics
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* Minkyu Kang <mk7.kang@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/mutex.h>
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#include <linux/err.h>
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#include <linux/i2c.h>
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#include <linux/delay.h>
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#include <linux/power_supply.h>
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#include <linux/max17040_battery.h>
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#define MAX17040_VCELL_MSB 0x02
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#define MAX17040_VCELL_LSB 0x03
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#define MAX17040_SOC_MSB 0x04
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#define MAX17040_SOC_LSB 0x05
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#define MAX17040_MODE_MSB 0x06
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#define MAX17040_MODE_LSB 0x07
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#define MAX17040_VER_MSB 0x08
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#define MAX17040_VER_LSB 0x09
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#define MAX17040_RCOMP_MSB 0x0C
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#define MAX17040_RCOMP_LSB 0x0D
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#define MAX17040_CMD_MSB 0xFE
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#define MAX17040_CMD_LSB 0xFF
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#define MAX17040_DELAY 1000
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#define MAX17040_BATTERY_FULL 95
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struct max17040_chip {
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struct i2c_client *client;
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struct delayed_work work;
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struct power_supply battery;
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struct max17040_platform_data *pdata;
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/* State Of Connect */
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int online;
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/* battery voltage */
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int vcell;
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/* battery capacity */
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int soc;
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/* State Of Charge */
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int status;
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};
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static int max17040_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 max17040_chip *chip = container_of(psy,
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struct max17040_chip, battery);
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switch (psp) {
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case POWER_SUPPLY_PROP_STATUS:
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val->intval = chip->status;
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break;
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case POWER_SUPPLY_PROP_ONLINE:
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val->intval = chip->online;
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break;
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case POWER_SUPPLY_PROP_VOLTAGE_NOW:
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val->intval = chip->vcell;
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break;
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case POWER_SUPPLY_PROP_CAPACITY:
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val->intval = chip->soc;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static int max17040_write_reg(struct i2c_client *client, int reg, u8 value)
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{
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int ret;
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ret = i2c_smbus_write_byte_data(client, reg, value);
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if (ret < 0)
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dev_err(&client->dev, "%s: err %d\n", __func__, ret);
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return ret;
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}
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static int max17040_read_reg(struct i2c_client *client, int reg)
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{
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int ret;
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ret = i2c_smbus_read_byte_data(client, reg);
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if (ret < 0)
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dev_err(&client->dev, "%s: err %d\n", __func__, ret);
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return ret;
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}
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static void max17040_reset(struct i2c_client *client)
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{
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max17040_write_reg(client, MAX17040_CMD_MSB, 0x54);
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max17040_write_reg(client, MAX17040_CMD_LSB, 0x00);
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}
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static void max17040_get_vcell(struct i2c_client *client)
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{
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struct max17040_chip *chip = i2c_get_clientdata(client);
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u8 msb;
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u8 lsb;
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msb = max17040_read_reg(client, MAX17040_VCELL_MSB);
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lsb = max17040_read_reg(client, MAX17040_VCELL_LSB);
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chip->vcell = (msb << 4) + (lsb >> 4);
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}
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static void max17040_get_soc(struct i2c_client *client)
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{
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struct max17040_chip *chip = i2c_get_clientdata(client);
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u8 msb;
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u8 lsb;
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msb = max17040_read_reg(client, MAX17040_SOC_MSB);
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lsb = max17040_read_reg(client, MAX17040_SOC_LSB);
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chip->soc = msb;
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}
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static void max17040_get_version(struct i2c_client *client)
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{
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u8 msb;
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u8 lsb;
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msb = max17040_read_reg(client, MAX17040_VER_MSB);
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lsb = max17040_read_reg(client, MAX17040_VER_LSB);
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dev_info(&client->dev, "MAX17040 Fuel-Gauge Ver %d%d\n", msb, lsb);
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}
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static void max17040_get_online(struct i2c_client *client)
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{
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struct max17040_chip *chip = i2c_get_clientdata(client);
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if (chip->pdata->battery_online)
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chip->online = chip->pdata->battery_online();
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else
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chip->online = 1;
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}
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static void max17040_get_status(struct i2c_client *client)
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{
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struct max17040_chip *chip = i2c_get_clientdata(client);
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if (!chip->pdata->charger_online || !chip->pdata->charger_enable) {
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chip->status = POWER_SUPPLY_STATUS_UNKNOWN;
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return;
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}
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if (chip->pdata->charger_online()) {
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if (chip->pdata->charger_enable())
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chip->status = POWER_SUPPLY_STATUS_CHARGING;
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else
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chip->status = POWER_SUPPLY_STATUS_NOT_CHARGING;
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} else {
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chip->status = POWER_SUPPLY_STATUS_DISCHARGING;
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}
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if (chip->soc > MAX17040_BATTERY_FULL)
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chip->status = POWER_SUPPLY_STATUS_FULL;
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}
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static void max17040_work(struct work_struct *work)
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{
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struct max17040_chip *chip;
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chip = container_of(work, struct max17040_chip, work.work);
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max17040_get_vcell(chip->client);
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max17040_get_soc(chip->client);
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max17040_get_online(chip->client);
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max17040_get_status(chip->client);
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schedule_delayed_work(&chip->work, MAX17040_DELAY);
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}
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static enum power_supply_property max17040_battery_props[] = {
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POWER_SUPPLY_PROP_STATUS,
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POWER_SUPPLY_PROP_ONLINE,
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POWER_SUPPLY_PROP_VOLTAGE_NOW,
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POWER_SUPPLY_PROP_CAPACITY,
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};
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static int __devinit max17040_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
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struct max17040_chip *chip;
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int ret;
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if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE))
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return -EIO;
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chip = kzalloc(sizeof(*chip), GFP_KERNEL);
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if (!chip)
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return -ENOMEM;
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chip->client = client;
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chip->pdata = client->dev.platform_data;
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i2c_set_clientdata(client, chip);
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chip->battery.name = "battery";
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chip->battery.type = POWER_SUPPLY_TYPE_BATTERY;
|
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chip->battery.get_property = max17040_get_property;
|
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chip->battery.properties = max17040_battery_props;
|
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chip->battery.num_properties = ARRAY_SIZE(max17040_battery_props);
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ret = power_supply_register(&client->dev, &chip->battery);
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if (ret) {
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dev_err(&client->dev, "failed: power supply register\n");
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i2c_set_clientdata(client, NULL);
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kfree(chip);
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return ret;
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}
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max17040_reset(client);
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max17040_get_version(client);
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INIT_DELAYED_WORK_DEFERRABLE(&chip->work, max17040_work);
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schedule_delayed_work(&chip->work, MAX17040_DELAY);
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return 0;
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}
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|
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static int __devexit max17040_remove(struct i2c_client *client)
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{
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struct max17040_chip *chip = i2c_get_clientdata(client);
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power_supply_unregister(&chip->battery);
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cancel_delayed_work(&chip->work);
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i2c_set_clientdata(client, NULL);
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kfree(chip);
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return 0;
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}
|
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|
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#ifdef CONFIG_PM
|
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static int max17040_suspend(struct i2c_client *client,
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pm_message_t state)
|
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{
|
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struct max17040_chip *chip = i2c_get_clientdata(client);
|
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|
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cancel_delayed_work(&chip->work);
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return 0;
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}
|
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|
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static int max17040_resume(struct i2c_client *client)
|
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{
|
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struct max17040_chip *chip = i2c_get_clientdata(client);
|
||||
|
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schedule_delayed_work(&chip->work, MAX17040_DELAY);
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return 0;
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}
|
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|
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#else
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|
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#define max17040_suspend NULL
|
||||
#define max17040_resume NULL
|
||||
|
||||
#endif /* CONFIG_PM */
|
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|
||||
static const struct i2c_device_id max17040_id[] = {
|
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{ "max17040", 0 },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(i2c, max17040_id);
|
||||
|
||||
static struct i2c_driver max17040_i2c_driver = {
|
||||
.driver = {
|
||||
.name = "max17040",
|
||||
},
|
||||
.probe = max17040_probe,
|
||||
.remove = __devexit_p(max17040_remove),
|
||||
.suspend = max17040_suspend,
|
||||
.resume = max17040_resume,
|
||||
.id_table = max17040_id,
|
||||
};
|
||||
|
||||
static int __init max17040_init(void)
|
||||
{
|
||||
return i2c_add_driver(&max17040_i2c_driver);
|
||||
}
|
||||
module_init(max17040_init);
|
||||
|
||||
static void __exit max17040_exit(void)
|
||||
{
|
||||
i2c_del_driver(&max17040_i2c_driver);
|
||||
}
|
||||
module_exit(max17040_exit);
|
||||
|
||||
MODULE_AUTHOR("Minkyu Kang <mk7.kang@samsung.com>");
|
||||
MODULE_DESCRIPTION("MAX17040 Fuel Gauge");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
|
@ -68,6 +68,34 @@ int w1_ds2760_write(struct device *dev, char *buf, int addr, size_t count)
|
|||
return w1_ds2760_io(dev, buf, addr, count, 1);
|
||||
}
|
||||
|
||||
static int w1_ds2760_eeprom_cmd(struct device *dev, int addr, int cmd)
|
||||
{
|
||||
struct w1_slave *sl = container_of(dev, struct w1_slave, dev);
|
||||
|
||||
if (!dev)
|
||||
return -EINVAL;
|
||||
|
||||
mutex_lock(&sl->master->mutex);
|
||||
|
||||
if (w1_reset_select_slave(sl) == 0) {
|
||||
w1_write_8(sl->master, cmd);
|
||||
w1_write_8(sl->master, addr);
|
||||
}
|
||||
|
||||
mutex_unlock(&sl->master->mutex);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int w1_ds2760_store_eeprom(struct device *dev, int addr)
|
||||
{
|
||||
return w1_ds2760_eeprom_cmd(dev, addr, W1_DS2760_COPY_DATA);
|
||||
}
|
||||
|
||||
int w1_ds2760_recall_eeprom(struct device *dev, int addr)
|
||||
{
|
||||
return w1_ds2760_eeprom_cmd(dev, addr, W1_DS2760_RECALL_DATA);
|
||||
}
|
||||
|
||||
static ssize_t w1_ds2760_read_bin(struct kobject *kobj,
|
||||
struct bin_attribute *bin_attr,
|
||||
char *buf, loff_t off, size_t count)
|
||||
|
|
@ -200,6 +228,8 @@ static void __exit w1_ds2760_exit(void)
|
|||
|
||||
EXPORT_SYMBOL(w1_ds2760_read);
|
||||
EXPORT_SYMBOL(w1_ds2760_write);
|
||||
EXPORT_SYMBOL(w1_ds2760_store_eeprom);
|
||||
EXPORT_SYMBOL(w1_ds2760_recall_eeprom);
|
||||
|
||||
module_init(w1_ds2760_init);
|
||||
module_exit(w1_ds2760_exit);
|
||||
|
|
|
|||
|
|
@ -25,6 +25,10 @@
|
|||
|
||||
#define DS2760_PROTECTION_REG 0x00
|
||||
#define DS2760_STATUS_REG 0x01
|
||||
#define DS2760_STATUS_IE (1 << 2)
|
||||
#define DS2760_STATUS_SWEN (1 << 3)
|
||||
#define DS2760_STATUS_RNAOP (1 << 4)
|
||||
#define DS2760_STATUS_PMOD (1 << 5)
|
||||
#define DS2760_EEPROM_REG 0x07
|
||||
#define DS2760_SPECIAL_FEATURE_REG 0x08
|
||||
#define DS2760_VOLTAGE_MSB 0x0c
|
||||
|
|
@ -38,6 +42,7 @@
|
|||
#define DS2760_EEPROM_BLOCK0 0x20
|
||||
#define DS2760_ACTIVE_FULL 0x20
|
||||
#define DS2760_EEPROM_BLOCK1 0x30
|
||||
#define DS2760_STATUS_WRITE_REG 0x31
|
||||
#define DS2760_RATED_CAPACITY 0x32
|
||||
#define DS2760_CURRENT_OFFSET_BIAS 0x33
|
||||
#define DS2760_ACTIVE_EMPTY 0x3b
|
||||
|
|
@ -46,5 +51,7 @@ extern int w1_ds2760_read(struct device *dev, char *buf, int addr,
|
|||
size_t count);
|
||||
extern int w1_ds2760_write(struct device *dev, char *buf, int addr,
|
||||
size_t count);
|
||||
extern int w1_ds2760_store_eeprom(struct device *dev, int addr);
|
||||
extern int w1_ds2760_recall_eeprom(struct device *dev, int addr);
|
||||
|
||||
#endif /* !__w1_ds2760_h__ */
|
||||
|
|
|
|||
|
|
@ -0,0 +1,19 @@
|
|||
/*
|
||||
* Copyright (C) 2009 Samsung Electronics
|
||||
* Minkyu Kang <mk7.kang@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 by the Free Software Foundation.
|
||||
*/
|
||||
|
||||
#ifndef __MAX17040_BATTERY_H_
|
||||
#define __MAX17040_BATTERY_H_
|
||||
|
||||
struct max17040_platform_data {
|
||||
int (*battery_online)(void);
|
||||
int (*charger_online)(void);
|
||||
int (*charger_enable)(void);
|
||||
};
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue