Commit 0903940d authored by Jonas Aaberg's avatar Jonas Aaberg Committed by Lee Jones
Browse files

mfd: ab8500-sysctrl: Only reboot into charging mode if battery type is known 



When a charger is connected, we usually want AB8500 based systems to
reboot into charging-only mode. However, if the battery type cannot
be identified this would be futile, so we'll just shut the system
down instead.

Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
Signed-off-by: default avatarJonas Aaberg <jonas.aberg@stericsson.com>
Reviewed-by: default avatarKarl KOMIEROWSKI <karl.komierowski@stericsson.com>
parent 7c34d7c2

drivers/mfd/ab8500-sysctrl.c

+22 −5
Original line number Diff line number Diff line
@@ -23,6 +23,10 @@ void ab8500_power_off(void) 
	sigset_t all;

	static char *pss[] = {"ab8500_ac", "ab8500_usb"};

	int i;

	bool charger_present = false;

	union power_supply_propval val;

	struct power_supply *psy;

	int ret;



	/*

	 * If we have a charger connected and we're powering off,
@@ -30,23 +34,36 @@ void ab8500_power_off(void) 
	 */



	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) {

			charger_present = true;

			break;

		}

	}



	if (!charger_present)

		goto shutdown;



	/* Check if battery is known */

	psy = power_supply_get_by_name("ab8500_btemp");

	if (psy) {

		ret = psy->get_property(psy, POWER_SUPPLY_PROP_TECHNOLOGY,

					&val);

		if (!ret && val.intval != POWER_SUPPLY_TECHNOLOGY_UNKNOWN) {

			printk(KERN_INFO

			       "Charger \"%s\" is connected. Rebooting.\n",

			       "Charger \"%s\" is connected with known battery."

			       " Rebooting.\n",

			       pss[i]);

			machine_restart(NULL);

		}

	}



shutdown:

	sigfillset(&all);



	if (!sigprocmask(SIG_BLOCK, &all, &old)) {

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