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abx500-chargalg: Add new sysfs interface to get current charge status 

Allow a user to check on AB8500 charging status from debugfs.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
hifive-unleashed-5.1
Lee Jones 2013-01-21 11:22:56 +00:00
parent e07a56453b
commit c9ade0fca3
2 changed files with 24 additions and 1 deletions
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3
drivers/power/ab8500_charger.c
View File

@ -2764,6 +2764,9 @@ static int ab8500_charger_usb_notifier_call(struct notifier_block *nb,
enum ab8500_usb_state bm_usb_state;
unsigned mA = *((unsigned *)power);
if (!di)
return NOTIFY_DONE;
if (event != USB_EVENT_VBUS) {
dev_dbg(di->dev, "not a standard host, returning\n");
return NOTIFY_DONE;

22
drivers/power/abx500_chargalg.c
View File

@ -1653,6 +1653,25 @@ static int abx500_chargalg_get_property(struct power_supply *psy,
/* Exposure to the sysfs interface */
/**
* abx500_chargalg_sysfs_show() - sysfs show operations
* @kobj: pointer to the struct kobject
* @attr: pointer to the struct attribute
* @buf: buffer that holds the parameter to send to userspace
*
* Returns a buffer to be displayed in user space
*/
static ssize_t abx500_chargalg_sysfs_show(struct kobject *kobj,
struct attribute *attr, char *buf)
{
struct abx500_chargalg *di = container_of(kobj,
struct abx500_chargalg, chargalg_kobject);
return sprintf(buf, "%d\n",
di->susp_status.ac_suspended &&
di->susp_status.usb_suspended);
}
/**
* abx500_chargalg_sysfs_charger() - sysfs store operations
* @kobj: pointer to the struct kobject
@ -1721,7 +1740,7 @@ static ssize_t abx500_chargalg_sysfs_charger(struct kobject *kobj,
static struct attribute abx500_chargalg_en_charger = \
{
.name = "chargalg",
.mode = S_IWUSR,
.mode = S_IRUGO | S_IWUSR,
};
static struct attribute *abx500_chargalg_chg[] = {
@ -1730,6 +1749,7 @@ static struct attribute *abx500_chargalg_chg[] = {
};
static const struct sysfs_ops abx500_chargalg_sysfs_ops = {
.show = abx500_chargalg_sysfs_show,
.store = abx500_chargalg_sysfs_charger,
};