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Commit d8312204 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge git://git.infradead.org/battery-2.6 

* git://git.infradead.org/battery-2.6:
  pda_power: Add optional OTG transceiver and voltage regulator support
  pcf50633_charger: Remove unused mbc_set_status function
  pcf50633_charger: Enable periodic charging restart
parents 3d4d4c8b 5bf2b994

drivers/power/pcf50633-charger.c

+71 −17
Original line number Diff line number Diff line
@@ -36,6 +36,8 @@ struct pcf50633_mbc { 


	struct power_supply usb;

	struct power_supply adapter;



	struct delayed_work charging_restart_work;

};



int pcf50633_mbc_usb_curlim_set(struct pcf50633 *pcf, int ma)
@@ -43,6 +45,8 @@ 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;

	int charging_start = 1;

	u8 mbcs2, chgmod;



	if (ma >= 1000)

		bits = PCF50633_MBCC7_USB_1000mA;
@@ -50,8 +54,10 @@ int pcf50633_mbc_usb_curlim_set(struct pcf50633 *pcf, int ma) 
		bits = PCF50633_MBCC7_USB_500mA;

	else if (ma >= 100)

		bits = PCF50633_MBCC7_USB_100mA;

	else

	else {

		bits = PCF50633_MBCC7_USB_SUSPEND;

		charging_start = 0;

	}



	ret = pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC7,

					PCF50633_MBCC7_USB_MASK, bits);
@@ -60,6 +66,22 @@ int pcf50633_mbc_usb_curlim_set(struct pcf50633 *pcf, int ma) 
	else

		dev_info(pcf->dev, "usb curlim to %d mA\n", ma);



	/* Manual charging start */

	mbcs2 = pcf50633_reg_read(pcf, PCF50633_REG_MBCS2);

	chgmod = (mbcs2 & PCF50633_MBCS2_MBC_MASK);



	/* If chgmod == BATFULL, setting chgena has no effect.

	 * We need to set resume instead.

	 */

	if (chgmod != PCF50633_MBCS2_MBC_BAT_FULL)

		pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC1,

				PCF50633_MBCC1_CHGENA, PCF50633_MBCC1_CHGENA);

	else

		pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC1,

				PCF50633_MBCC1_RESUME, PCF50633_MBCC1_RESUME);



	mbc->usb_active = charging_start;



	power_supply_changed(&mbc->usb);



	return ret;
@@ -84,21 +106,6 @@ int pcf50633_mbc_get_status(struct pcf50633 *pcf) 
}

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)

{
@@ -160,10 +167,44 @@ static struct attribute_group mbc_attr_group = { 
	.attrs	= pcf50633_mbc_sysfs_entries,

};



/* MBC state machine switches into charging mode when the battery voltage

 * falls below 96% of a battery float voltage. But the voltage drop in Li-ion

 * batteries is marginal(1~2 %) till about 80% of its capacity - which means,

 * after a BATFULL, charging won't be restarted until 80%.

 *

 * This work_struct function restarts charging at regular intervals to make

 * sure we don't discharge too much

 */



static void pcf50633_mbc_charging_restart(struct work_struct *work)

{

	struct pcf50633_mbc *mbc;

	u8 mbcs2, chgmod;



	mbc = container_of(work, struct pcf50633_mbc,

				charging_restart_work.work);



	mbcs2 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS2);

	chgmod = (mbcs2 & PCF50633_MBCS2_MBC_MASK);



	if (chgmod != PCF50633_MBCS2_MBC_BAT_FULL)

		return;



	/* Restart charging */

	pcf50633_reg_set_bit_mask(mbc->pcf, PCF50633_REG_MBCC1,

				PCF50633_MBCC1_RESUME, PCF50633_MBCC1_RESUME);

	mbc->usb_active = 1;

	power_supply_changed(&mbc->usb);



	dev_info(mbc->pcf->dev, "Charging restarted\n");

}



static void

pcf50633_mbc_irq_handler(int irq, void *data)

{

	struct pcf50633_mbc *mbc = data;

	int chg_restart_interval =

			mbc->pcf->pdata->charging_restart_interval;



	/* USB */

	if (irq == PCF50633_IRQ_USBINS) {
@@ -172,6 +213,7 @@ pcf50633_mbc_irq_handler(int irq, void *data) 
		mbc->usb_online = 0;

		mbc->usb_active = 0;

		pcf50633_mbc_usb_curlim_set(mbc->pcf, 0);

		cancel_delayed_work_sync(&mbc->charging_restart_work);

	}



	/* Adapter */
@@ -186,7 +228,14 @@ pcf50633_mbc_irq_handler(int irq, void *data) 
	if (irq == PCF50633_IRQ_BATFULL) {

		mbc->usb_active = 0;

		mbc->adapter_active = 0;

	}



		if (chg_restart_interval > 0)

			schedule_delayed_work(&mbc->charging_restart_work,

							chg_restart_interval);

	} else if (irq == PCF50633_IRQ_USBLIMON)

		mbc->usb_active = 0;

	else if (irq == PCF50633_IRQ_USBLIMOFF)

		mbc->usb_active = 1;



	power_supply_changed(&mbc->usb);

	power_supply_changed(&mbc->adapter);
@@ -303,6 +352,9 @@ static int __devinit pcf50633_mbc_probe(struct platform_device *pdev) 
		return ret;

	}



	INIT_DELAYED_WORK(&mbc->charging_restart_work,

				pcf50633_mbc_charging_restart);



	ret = sysfs_create_group(&pdev->dev.kobj, &mbc_attr_group);

	if (ret)

		dev_err(mbc->pcf->dev, "failed to create sysfs entries\n");
@@ -328,6 +380,8 @@ static int __devexit pcf50633_mbc_remove(struct platform_device *pdev) 
	power_supply_unregister(&mbc->usb);

	power_supply_unregister(&mbc->adapter);



	cancel_delayed_work_sync(&mbc->charging_restart_work);



	kfree(mbc);



	return 0;

drivers/power/pda_power.c

+77 −12
Original line number Diff line number Diff line
@@ -12,11 +12,14 @@ 


#include <linux/module.h>

#include <linux/platform_device.h>

#include <linux/err.h>

#include <linux/interrupt.h>

#include <linux/power_supply.h>

#include <linux/pda_power.h>

#include <linux/regulator/consumer.h>

#include <linux/timer.h>

#include <linux/jiffies.h>

#include <linux/usb/otg.h>



static inline unsigned int get_irq_flags(struct resource *res)

{
@@ -35,6 +38,11 @@ static struct timer_list supply_timer; 
static struct timer_list polling_timer;

static int polling;



#ifdef CONFIG_USB_OTG_UTILS

static struct otg_transceiver *transceiver;

#endif

static struct regulator *ac_draw;



enum {

	PDA_PSY_OFFLINE = 0,

	PDA_PSY_ONLINE = 1,
@@ -104,9 +112,10 @@ static void update_status(void) 


static void update_charger(void)

{

	if (!pdata->set_charge)

		return;

	static int regulator_enabled;

	int max_uA = pdata->ac_max_uA;



	if (pdata->set_charge) {

		if (new_ac_status > 0) {

			dev_dbg(dev, "charger on (AC)\n");

			pdata->set_charge(PDA_POWER_CHARGE_AC);
@@ -117,6 +126,22 @@ static void update_charger(void) 
			dev_dbg(dev, "charger off\n");

			pdata->set_charge(0);

		}

	} else if (ac_draw) {

		if (new_ac_status > 0) {

			regulator_set_current_limit(ac_draw, max_uA, max_uA);

			if (!regulator_enabled) {

				dev_dbg(dev, "charger on (AC)\n");

				regulator_enable(ac_draw);

				regulator_enabled = 1;

			}

		} else {

			if (regulator_enabled) {

				dev_dbg(dev, "charger off\n");

				regulator_disable(ac_draw);

				regulator_enabled = 0;

			}

		}

	}

}



static void supply_timer_func(unsigned long unused)
@@ -194,6 +219,13 @@ static void polling_timer_func(unsigned long unused) 
		  jiffies + msecs_to_jiffies(pdata->polling_interval));

}



#ifdef CONFIG_USB_OTG_UTILS

static int otg_is_usb_online(void)

{

	return (transceiver->state == OTG_STATE_B_PERIPHERAL);

}

#endif



static int pda_power_probe(struct platform_device *pdev)

{

	int ret = 0;
@@ -227,6 +259,9 @@ static int pda_power_probe(struct platform_device *pdev) 
	if (!pdata->polling_interval)

		pdata->polling_interval = 2000;



	if (!pdata->ac_max_uA)

		pdata->ac_max_uA = 500000;



	setup_timer(&charger_timer, charger_timer_func, 0);

	setup_timer(&supply_timer, supply_timer_func, 0);
@@ -240,6 +275,13 @@ static int pda_power_probe(struct platform_device *pdev) 
		pda_psy_usb.num_supplicants = pdata->num_supplicants;

	}



	ac_draw = regulator_get(dev, "ac_draw");

	if (IS_ERR(ac_draw)) {

		dev_dbg(dev, "couldn't get ac_draw regulator\n");

		ac_draw = NULL;

		ret = PTR_ERR(ac_draw);

	}



	if (pdata->is_ac_online) {

		ret = power_supply_register(&pdev->dev, &pda_psy_ac);

		if (ret) {
@@ -261,6 +303,13 @@ static int pda_power_probe(struct platform_device *pdev) 
		}

	}



#ifdef CONFIG_USB_OTG_UTILS

	transceiver = otg_get_transceiver();

	if (transceiver && !pdata->is_usb_online) {

		pdata->is_usb_online = otg_is_usb_online;

	}

#endif



	if (pdata->is_usb_online) {

		ret = power_supply_register(&pdev->dev, &pda_psy_usb);

		if (ret) {
@@ -300,10 +349,18 @@ static int pda_power_probe(struct platform_device *pdev) 
usb_supply_failed:

	if (pdata->is_ac_online && ac_irq)

		free_irq(ac_irq->start, &pda_psy_ac);

#ifdef CONFIG_USB_OTG_UTILS

	if (transceiver)

		otg_put_transceiver(transceiver);

#endif

ac_irq_failed:

	if (pdata->is_ac_online)

		power_supply_unregister(&pda_psy_ac);

ac_supply_failed:

	if (ac_draw) {

		regulator_put(ac_draw);

		ac_draw = NULL;

	}

	if (pdata->exit)

		pdata->exit(dev);

init_failed:
@@ -327,6 +384,14 @@ static int pda_power_remove(struct platform_device *pdev) 
		power_supply_unregister(&pda_psy_usb);

	if (pdata->is_ac_online)

		power_supply_unregister(&pda_psy_ac);

#ifdef CONFIG_USB_OTG_UTILS

	if (transceiver)

		otg_put_transceiver(transceiver);

#endif

	if (ac_draw) {

		regulator_put(ac_draw);

		ac_draw = NULL;

	}

	if (pdata->exit)

		pdata->exit(dev);

include/linux/mfd/pcf50633/core.h

+2 −0
Original line number Diff line number Diff line
@@ -29,6 +29,8 @@ struct pcf50633_platform_data { 
	char **batteries;

	int num_batteries;



	int charging_restart_interval;



	/* Callbacks */

	void (*probe_done)(struct pcf50633 *);

	void (*mbc_event_callback)(struct pcf50633 *, int);

include/linux/mfd/pcf50633/mbc.h

+0 −1
Original line number Diff line number Diff line
@@ -128,7 +128,6 @@ enum pcf50633_reg_mbcs3 { 
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

include/linux/pda_power.h

+2 −0
Original line number Diff line number Diff line
@@ -31,6 +31,8 @@ struct pda_power_pdata { 
	unsigned int wait_for_status; /* msecs, default is 500 */

	unsigned int wait_for_charger; /* msecs, default is 500 */

	unsigned int polling_interval; /* msecs, default is 2000 */



	unsigned long ac_max_uA; /* current to draw when on AC */

};



#endif /* __PDA_POWER_H__ */