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

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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: 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 15:58:52 +02:00 committed by Lee Jones
parent 7c34d7c2b5
commit 0903940dcd
1 changed files with 22 additions and 5 deletions
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27
drivers/mfd/ab8500-sysctrl.c
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@ -23,6 +23,10 @@ void ab8500_power_off(void)
sigset_t all; sigset_t all;
static char *pss[] = {"ab8500_ac", "ab8500_usb"}; static char *pss[] = {"ab8500_ac", "ab8500_usb"};
int i; 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, * 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++) { 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]); psy = power_supply_get_by_name(pss[i]);
if (!psy) if (!psy)
continue; continue;
ret = psy->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &val); ret = psy->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &val);
if (!ret && val.intval) { 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 printk(KERN_INFO
"Charger \"%s\" is connected. Rebooting.\n", "Charger \"%s\" is connected with known battery."
" Rebooting.\n",
pss[i]); pss[i]);
machine_restart(NULL); machine_restart(NULL);
} }
} }
shutdown:
sigfillset(&all); sigfillset(&all);
if (!sigprocmask(SIG_BLOCK, &all, &old)) { if (!sigprocmask(SIG_BLOCK, &all, &old)) {