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mfd: ab8500-sysctrl: If a charger is present, reboot instead

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If a charger is attached on power off, reboot the system
into charging mode instead of powering it off.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com>
Reviewed-by: Karl KOMIEROWSKI <karl.komierowski@stericsson.com>
This commit is contained in:
Jonas Aaberg 2011-08-17 13:20:21 +02:00 committed by Lee Jones
parent 379749c463
commit 7c34d7c2b5
1 changed files with 27 additions and 0 deletions
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27
drivers/mfd/ab8500-sysctrl.c
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@ -8,7 +8,9 @@
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
#include <linux/reboot.h>
#include <linux/signal.h>
#include <linux/power_supply.h>
#include <linux/mfd/abx500.h>
#include <linux/mfd/abx500/ab8500.h>
#include <linux/mfd/abx500/ab8500-sysctrl.h>
@ -19,6 +21,31 @@ void ab8500_power_off(void)
{
sigset_t old;
sigset_t all;
static char *pss[] = {"ab8500_ac", "ab8500_usb"};
int i;
/*
* If we have a charger connected and we're powering off,
* reboot into charge-only mode.
*/
for (i = 0; i < ARRAY_SIZE(pss); i++) {
union power_supply_propval val;
struct power_supply *psy;
int ret;
psy = power_supply_get_by_name(pss[i]);
if (!psy)
continue;
ret = psy->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &val);
if (!ret && val.intval) {
printk(KERN_INFO
"Charger \"%s\" is connected. Rebooting.\n",
pss[i]);
machine_restart(NULL);
}
}
sigfillset(&all);