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pda_power: implement polling

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Signed-off-by: Anton Vorontsov <cbou@mail.ru>
This commit is contained in:
Anton Vorontsov 2008-01-13 02:44:20 +03:00
parent bfde2662ae
commit c3caebad74
2 changed files with 46 additions and 1 deletions
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46
drivers/power/pda_power.c
View File

@ -32,6 +32,8 @@ static struct pda_power_pdata *pdata;
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,
@ -167,6 +169,31 @@ static irqreturn_t power_changed_isr(int irq, void *power_supply)
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;
@ -191,6 +218,9 @@ static int pda_power_probe(struct platform_device *pdev)
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);
@ -220,6 +250,8 @@ static int pda_power_probe(struct platform_device *pdev)
dev_err(dev, "request ac irq failed\n");
goto ac_irq_failed;
}
} else {
polling = 1;
}
}
@ -239,10 +271,20 @@ static int pda_power_probe(struct platform_device *pdev)
dev_err(dev, "request usb irq failed\n");
goto usb_irq_failed;
}
} else {
polling = 1;
}
}
device_init_wakeup(&pdev->dev, 1);
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;
@ -267,6 +309,8 @@ static int pda_power_remove(struct platform_device *pdev)
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);

1
include/linux/pda_power.h
View File

@ -26,6 +26,7 @@ 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 */
};
#endif /* __PDA_POWER_H__ */