static struct resource *ac_irq, *usb_irq;
static struct timer_list charger_timer;
static struct timer_list supply_timer;
+static struct timer_list polling_timer;
+static int polling;
+
+enum {
+ PDA_PSY_OFFLINE = 0,
+ PDA_PSY_ONLINE = 1,
+ PDA_PSY_TO_CHANGE,
+};
+static int new_ac_status = -1;
+static int new_usb_status = -1;
+static int ac_status = -1;
+static int usb_status = -1;
static int pda_power_get_property(struct power_supply *psy,
enum power_supply_property psp,
"backup-battery",
};
-static struct power_supply pda_power_supplies[] = {
- {
- .name = "ac",
- .type = POWER_SUPPLY_TYPE_MAINS,
- .supplied_to = pda_power_supplied_to,
- .num_supplicants = ARRAY_SIZE(pda_power_supplied_to),
- .properties = pda_power_props,
- .num_properties = ARRAY_SIZE(pda_power_props),
- .get_property = pda_power_get_property,
- },
- {
- .name = "usb",
- .type = POWER_SUPPLY_TYPE_USB,
- .supplied_to = pda_power_supplied_to,
- .num_supplicants = ARRAY_SIZE(pda_power_supplied_to),
- .properties = pda_power_props,
- .num_properties = ARRAY_SIZE(pda_power_props),
- .get_property = pda_power_get_property,
- },
+static struct power_supply pda_psy_ac = {
+ .name = "ac",
+ .type = POWER_SUPPLY_TYPE_MAINS,
+ .supplied_to = pda_power_supplied_to,
+ .num_supplicants = ARRAY_SIZE(pda_power_supplied_to),
+ .properties = pda_power_props,
+ .num_properties = ARRAY_SIZE(pda_power_props),
+ .get_property = pda_power_get_property,
};
+static struct power_supply pda_psy_usb = {
+ .name = "usb",
+ .type = POWER_SUPPLY_TYPE_USB,
+ .supplied_to = pda_power_supplied_to,
+ .num_supplicants = ARRAY_SIZE(pda_power_supplied_to),
+ .properties = pda_power_props,
+ .num_properties = ARRAY_SIZE(pda_power_props),
+ .get_property = pda_power_get_property,
+};
+
+static void update_status(void)
+{
+ if (pdata->is_ac_online)
+ new_ac_status = !!pdata->is_ac_online();
+
+ if (pdata->is_usb_online)
+ new_usb_status = !!pdata->is_usb_online();
+}
+
static void update_charger(void)
{
if (!pdata->set_charge)
return;
- if (pdata->is_ac_online && pdata->is_ac_online()) {
+ if (new_ac_status > 0) {
dev_dbg(dev, "charger on (AC)\n");
pdata->set_charge(PDA_POWER_CHARGE_AC);
- } else if (pdata->is_usb_online && pdata->is_usb_online()) {
+ } else if (new_usb_status > 0) {
dev_dbg(dev, "charger on (USB)\n");
pdata->set_charge(PDA_POWER_CHARGE_USB);
} else {
dev_dbg(dev, "charger off\n");
pdata->set_charge(0);
}
-
- return;
}
-static void supply_timer_func(unsigned long irq)
+static void supply_timer_func(unsigned long unused)
{
- if (ac_irq && irq == ac_irq->start)
- power_supply_changed(&pda_power_supplies[0]);
- else if (usb_irq && irq == usb_irq->start)
- power_supply_changed(&pda_power_supplies[1]);
- return;
+ if (ac_status == PDA_PSY_TO_CHANGE) {
+ ac_status = new_ac_status;
+ power_supply_changed(&pda_psy_ac);
+ }
+
+ if (usb_status == PDA_PSY_TO_CHANGE) {
+ usb_status = new_usb_status;
+ power_supply_changed(&pda_psy_usb);
+ }
}
-static void charger_timer_func(unsigned long irq)
+static void psy_changed(void)
{
update_charger();
- /* Okay, charger set. Now wait a bit before notifying supplicants,
- * charge power should stabilize. */
- supply_timer.data = irq;
+ /*
+ * Okay, charger set. Now wait a bit before notifying supplicants,
+ * charge power should stabilize.
+ */
mod_timer(&supply_timer,
jiffies + msecs_to_jiffies(pdata->wait_for_charger));
- return;
}
-static irqreturn_t power_changed_isr(int irq, void *unused)
+static void charger_timer_func(unsigned long unused)
+{
+ update_status();
+ psy_changed();
+}
+
+static irqreturn_t power_changed_isr(int irq, void *power_supply)
{
- /* Wait a bit before reading ac/usb line status and setting charger,
- * because ac/usb status readings may lag from irq. */
- charger_timer.data = irq;
+ if (power_supply == &pda_psy_ac)
+ ac_status = PDA_PSY_TO_CHANGE;
+ else if (power_supply == &pda_psy_usb)
+ usb_status = PDA_PSY_TO_CHANGE;
+ else
+ return IRQ_NONE;
+
+ /*
+ * 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 IRQ_HANDLED;
}
+static void polling_timer_func(unsigned long unused)
+{
+ int changed = 0;
+
+ dev_dbg(dev, "polling...\n");
+
+ update_status();
+
+ if (!ac_irq && new_ac_status != ac_status) {
+ ac_status = PDA_PSY_TO_CHANGE;
+ changed = 1;
+ }
+
+ if (!usb_irq && new_usb_status != usb_status) {
+ usb_status = PDA_PSY_TO_CHANGE;
+ changed = 1;
+ }
+
+ if (changed)
+ psy_changed();
+
+ mod_timer(&polling_timer,
+ jiffies + msecs_to_jiffies(pdata->polling_interval));
+}
+
static int pda_power_probe(struct platform_device *pdev)
{
int ret = 0;
pdata = pdev->dev.platform_data;
+ if (pdata->init) {
+ ret = pdata->init(dev);
+ if (ret < 0)
+ goto init_failed;
+ }
+
+ update_status();
update_charger();
if (!pdata->wait_for_status)
if (!pdata->wait_for_charger)
pdata->wait_for_charger = 500;
+ if (!pdata->polling_interval)
+ pdata->polling_interval = 2000;
+
setup_timer(&charger_timer, charger_timer_func, 0);
setup_timer(&supply_timer, supply_timer_func, 0);
ac_irq = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "ac");
usb_irq = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "usb");
- if (!ac_irq && !usb_irq) {
- dev_err(dev, "no ac/usb irq specified\n");
- ret = -ENODEV;
- goto noirqs;
- }
if (pdata->supplied_to) {
- pda_power_supplies[0].supplied_to = pdata->supplied_to;
- pda_power_supplies[1].supplied_to = pdata->supplied_to;
- pda_power_supplies[0].num_supplicants = pdata->num_supplicants;
- pda_power_supplies[1].num_supplicants = pdata->num_supplicants;
+ pda_psy_ac.supplied_to = pdata->supplied_to;
+ pda_psy_ac.num_supplicants = pdata->num_supplicants;
+ pda_psy_usb.supplied_to = pdata->supplied_to;
+ pda_psy_usb.num_supplicants = pdata->num_supplicants;
}
- ret = power_supply_register(&pdev->dev, &pda_power_supplies[0]);
- if (ret) {
- dev_err(dev, "failed to register %s power supply\n",
- pda_power_supplies[0].name);
- goto supply0_failed;
- }
+ if (pdata->is_ac_online) {
+ ret = power_supply_register(&pdev->dev, &pda_psy_ac);
+ if (ret) {
+ dev_err(dev, "failed to register %s power supply\n",
+ pda_psy_ac.name);
+ goto ac_supply_failed;
+ }
- ret = power_supply_register(&pdev->dev, &pda_power_supplies[1]);
- if (ret) {
- dev_err(dev, "failed to register %s power supply\n",
- pda_power_supplies[1].name);
- goto supply1_failed;
+ if (ac_irq) {
+ ret = request_irq(ac_irq->start, power_changed_isr,
+ get_irq_flags(ac_irq), ac_irq->name,
+ &pda_psy_ac);
+ if (ret) {
+ dev_err(dev, "request ac irq failed\n");
+ goto ac_irq_failed;
+ }
+ } else {
+ polling = 1;
+ }
}
- if (ac_irq) {
- ret = request_irq(ac_irq->start, power_changed_isr,
- get_irq_flags(ac_irq), ac_irq->name,
- &pda_power_supplies[0]);
+ if (pdata->is_usb_online) {
+ ret = power_supply_register(&pdev->dev, &pda_psy_usb);
if (ret) {
- dev_err(dev, "request ac irq failed\n");
- goto ac_irq_failed;
+ dev_err(dev, "failed to register %s power supply\n",
+ pda_psy_usb.name);
+ goto usb_supply_failed;
}
- }
- if (usb_irq) {
- ret = request_irq(usb_irq->start, power_changed_isr,
- get_irq_flags(usb_irq), usb_irq->name,
- &pda_power_supplies[1]);
- if (ret) {
- dev_err(dev, "request usb irq failed\n");
- goto usb_irq_failed;
+ if (usb_irq) {
+ ret = request_irq(usb_irq->start, power_changed_isr,
+ get_irq_flags(usb_irq),
+ usb_irq->name, &pda_psy_usb);
+ if (ret) {
+ dev_err(dev, "request usb irq failed\n");
+ goto usb_irq_failed;
+ }
+ } else {
+ polling = 1;
}
}
- goto success;
+ if (polling) {
+ dev_dbg(dev, "will poll for status\n");
+ setup_timer(&polling_timer, polling_timer_func, 0);
+ mod_timer(&polling_timer,
+ jiffies + msecs_to_jiffies(pdata->polling_interval));
+ }
+
+ if (ac_irq || usb_irq)
+ device_init_wakeup(&pdev->dev, 1);
+
+ return 0;
usb_irq_failed:
- if (ac_irq)
- free_irq(ac_irq->start, &pda_power_supplies[0]);
+ 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);
ac_irq_failed:
- power_supply_unregister(&pda_power_supplies[1]);
-supply1_failed:
- power_supply_unregister(&pda_power_supplies[0]);
-supply0_failed:
-noirqs:
+ if (pdata->is_ac_online)
+ power_supply_unregister(&pda_psy_ac);
+ac_supply_failed:
+ if (pdata->exit)
+ pdata->exit(dev);
+init_failed:
wrongid:
-success:
return ret;
}
static int pda_power_remove(struct platform_device *pdev)
{
- if (usb_irq)
- free_irq(usb_irq->start, &pda_power_supplies[1]);
- if (ac_irq)
- free_irq(ac_irq->start, &pda_power_supplies[0]);
+ if (pdata->is_usb_online && usb_irq)
+ free_irq(usb_irq->start, &pda_psy_usb);
+ if (pdata->is_ac_online && ac_irq)
+ free_irq(ac_irq->start, &pda_psy_ac);
+
+ if (polling)
+ del_timer_sync(&polling_timer);
del_timer_sync(&charger_timer);
del_timer_sync(&supply_timer);
- power_supply_unregister(&pda_power_supplies[1]);
- power_supply_unregister(&pda_power_supplies[0]);
+
+ if (pdata->is_usb_online)
+ power_supply_unregister(&pda_psy_usb);
+ if (pdata->is_ac_online)
+ power_supply_unregister(&pda_psy_ac);
+ if (pdata->exit)
+ pdata->exit(dev);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int pda_power_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ if (device_may_wakeup(&pdev->dev)) {
+ if (ac_irq)
+ enable_irq_wake(ac_irq->start);
+ if (usb_irq)
+ enable_irq_wake(usb_irq->start);
+ }
+
return 0;
}
+static int pda_power_resume(struct platform_device *pdev)
+{
+ if (device_may_wakeup(&pdev->dev)) {
+ if (usb_irq)
+ disable_irq_wake(usb_irq->start);
+ if (ac_irq)
+ disable_irq_wake(ac_irq->start);
+ }
+
+ return 0;
+}
+#else
+#define pda_power_suspend NULL
+#define pda_power_resume NULL
+#endif /* CONFIG_PM */
+
+MODULE_ALIAS("platform:pda-power");
+
static struct platform_driver pda_power_pdrv = {
.driver = {
.name = "pda-power",
},
.probe = pda_power_probe,
.remove = pda_power_remove,
+ .suspend = pda_power_suspend,
+ .resume = pda_power_resume,
};
static int __init pda_power_init(void)
static void __exit pda_power_exit(void)
{
platform_driver_unregister(&pda_power_pdrv);
- return;
}
module_init(pda_power_init);
git.openpandora.org / pandora-kernel.git / blobdiff