diff options
author | Ulf Hansson <ulf.hansson@stericsson.com> | 2011-09-19 15:40:54 +0200 |
---|---|---|
committer | Ulf Hansson <ulf.hansson@stericsson.com> | 2011-09-19 15:40:54 +0200 |
commit | 9ab67899804448f2bea4087bb6e9e4d952a79258 (patch) | |
tree | 29ca9054d473e57f6d79638d1d3982f1ffcffcca /drivers/power | |
parent | 0de20dc0be1f147959b10903c76f2f41139f417a (diff) | |
parent | f5968c8833f0985b76d38593892acd6558bab149 (diff) |
Merge linux-linaro-3.0-2011.07-1-android-1 into..
..linux-linaro-3.0-2011.07-1_glk3.0
Conflicts:
arch/arm/common/Makefile
drivers/misc/Kconfig
drivers/misc/Makefile
kernel/printk.c
Change-Id: I126f34edb1879981909072beefb2738cad26f951
Diffstat (limited to 'drivers/power')
-rw-r--r-- | drivers/power/pda_power.c | 71 | ||||
-rw-r--r-- | drivers/power/power_supply_core.c | 30 |
2 files changed, 85 insertions, 16 deletions
diff --git a/drivers/power/pda_power.c b/drivers/power/pda_power.c index 69f8aa3a6a4..81b720107c3 100644 --- a/drivers/power/pda_power.c +++ b/drivers/power/pda_power.c @@ -14,6 +14,7 @@ #include <linux/platform_device.h> #include <linux/err.h> #include <linux/interrupt.h> +#include <linux/notifier.h> #include <linux/power_supply.h> #include <linux/pda_power.h> #include <linux/regulator/consumer.h> @@ -38,9 +39,8 @@ 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 notifier_block otg_nb; static struct regulator *ac_draw; enum { @@ -222,7 +222,42 @@ static void polling_timer_func(unsigned long unused) #ifdef CONFIG_USB_OTG_UTILS static int otg_is_usb_online(void) { - return (transceiver->state == OTG_STATE_B_PERIPHERAL); + return (transceiver->last_event == USB_EVENT_VBUS || + transceiver->last_event == USB_EVENT_ENUMERATED); +} + +static int otg_is_ac_online(void) +{ + return (transceiver->last_event == USB_EVENT_CHARGER); +} + +static int otg_handle_notification(struct notifier_block *nb, + unsigned long event, void *unused) +{ + switch (event) { + case USB_EVENT_CHARGER: + ac_status = PDA_PSY_TO_CHANGE; + break; + case USB_EVENT_VBUS: + case USB_EVENT_ENUMERATED: + usb_status = PDA_PSY_TO_CHANGE; + break; + case USB_EVENT_NONE: + ac_status = PDA_PSY_TO_CHANGE; + usb_status = PDA_PSY_TO_CHANGE; + break; + default: + return NOTIFY_OK; + } + + /* + * Wait a bit before reading ac/usb line status and setting charger, + * because ac/usb status readings may lag from irq. + */ + mod_timer(&charger_timer, + jiffies + msecs_to_jiffies(pdata->wait_for_status)); + + return NOTIFY_OK; } #endif @@ -282,6 +317,14 @@ static int pda_power_probe(struct platform_device *pdev) ret = PTR_ERR(ac_draw); } + transceiver = otg_get_transceiver(); + if (transceiver && !pdata->is_usb_online) { + pdata->is_usb_online = otg_is_usb_online; + } + if (transceiver && !pdata->is_ac_online) { + pdata->is_ac_online = otg_is_ac_online; + } + if (pdata->is_ac_online) { ret = power_supply_register(&pdev->dev, &pda_psy_ac); if (ret) { @@ -303,13 +346,6 @@ 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) { @@ -331,6 +367,16 @@ static int pda_power_probe(struct platform_device *pdev) } } + if (transceiver && pdata->use_otg_notifier) { + otg_nb.notifier_call = otg_handle_notification; + ret = otg_register_notifier(transceiver, &otg_nb); + if (ret) { + dev_err(dev, "failure to register otg notifier\n"); + goto otg_reg_notifier_failed; + } + polling = 0; + } + if (polling) { dev_dbg(dev, "will poll for status\n"); setup_timer(&polling_timer, polling_timer_func, 0); @@ -343,16 +389,17 @@ static int pda_power_probe(struct platform_device *pdev) return 0; +otg_reg_notifier_failed: + if (pdata->is_usb_online && usb_irq) + free_irq(usb_irq->start, &pda_psy_usb); usb_irq_failed: if (pdata->is_usb_online) power_supply_unregister(&pda_psy_usb); 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); diff --git a/drivers/power/power_supply_core.c b/drivers/power/power_supply_core.c index 329b46b2327..03810ce5633 100644 --- a/drivers/power/power_supply_core.c +++ b/drivers/power/power_supply_core.c @@ -41,23 +41,40 @@ static int __power_supply_changed_work(struct device *dev, void *data) static void power_supply_changed_work(struct work_struct *work) { + unsigned long flags; struct power_supply *psy = container_of(work, struct power_supply, changed_work); dev_dbg(psy->dev, "%s\n", __func__); - class_for_each_device(power_supply_class, NULL, psy, - __power_supply_changed_work); + spin_lock_irqsave(&psy->changed_lock, flags); + if (psy->changed) { + psy->changed = false; + spin_unlock_irqrestore(&psy->changed_lock, flags); - power_supply_update_leds(psy); + class_for_each_device(power_supply_class, NULL, psy, + __power_supply_changed_work); - kobject_uevent(&psy->dev->kobj, KOBJ_CHANGE); + power_supply_update_leds(psy); + + kobject_uevent(&psy->dev->kobj, KOBJ_CHANGE); + spin_lock_irqsave(&psy->changed_lock, flags); + } + if (!psy->changed) + wake_unlock(&psy->work_wake_lock); + spin_unlock_irqrestore(&psy->changed_lock, flags); } void power_supply_changed(struct power_supply *psy) { + unsigned long flags; + dev_dbg(psy->dev, "%s\n", __func__); + spin_lock_irqsave(&psy->changed_lock, flags); + psy->changed = true; + wake_lock(&psy->work_wake_lock); + spin_unlock_irqrestore(&psy->changed_lock, flags); schedule_work(&psy->changed_work); } EXPORT_SYMBOL_GPL(power_supply_changed); @@ -181,6 +198,9 @@ int power_supply_register(struct device *parent, struct power_supply *psy) if (rc) goto device_add_failed; + spin_lock_init(&psy->changed_lock); + wake_lock_init(&psy->work_wake_lock, WAKE_LOCK_SUSPEND, "power-supply"); + rc = power_supply_create_triggers(psy); if (rc) goto create_triggers_failed; @@ -190,6 +210,7 @@ int power_supply_register(struct device *parent, struct power_supply *psy) goto success; create_triggers_failed: + wake_lock_destroy(&psy->work_wake_lock); device_del(dev); kobject_set_name_failed: device_add_failed: @@ -203,6 +224,7 @@ void power_supply_unregister(struct power_supply *psy) { cancel_work_sync(&psy->changed_work); power_supply_remove_triggers(psy); + wake_lock_destroy(&psy->work_wake_lock); device_unregister(psy->dev); } EXPORT_SYMBOL_GPL(power_supply_unregister); |