Commit d0376031 authored by Mark Brown's avatar Mark Brown Committed by Anton Vorontsov

wm831x_backup: Support multiple instances

If there are multiple wm831x devices in the system we need to assign
different names to the power supply devices in order to ensure we can
create the sysfs entries for them.
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: default avatarAnton Vorontsov <cbouatmailru@gmail.com>
parent c84cad3d
......@@ -22,6 +22,7 @@
struct wm831x_backup {
struct wm831x *wm831x;
struct power_supply backup;
char name[20];
};
static int wm831x_backup_read_voltage(struct wm831x *wm831x,
......@@ -163,6 +164,7 @@ static enum power_supply_property wm831x_backup_props[] = {
static __devinit int wm831x_backup_probe(struct platform_device *pdev)
{
struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
struct wm831x_pdata *wm831x_pdata = wm831x->dev->platform_data;
struct wm831x_backup *devdata;
struct power_supply *backup;
int ret;
......@@ -182,7 +184,14 @@ static __devinit int wm831x_backup_probe(struct platform_device *pdev)
*/
wm831x_config_backup(wm831x);
backup->name = "wm831x-backup";
if (wm831x_pdata && wm831x_pdata->wm831x_num)
snprintf(devdata->name, sizeof(devdata->name),
"wm831x-backup.%d", wm831x_pdata->wm831x_num);
else
snprintf(devdata->name, sizeof(devdata->name),
"wm831x-backup");
backup->name = devdata->name;
backup->type = POWER_SUPPLY_TYPE_BATTERY;
backup->properties = wm831x_backup_props;
backup->num_properties = ARRAY_SIZE(wm831x_backup_props);
......@@ -203,6 +212,7 @@ static __devexit int wm831x_backup_remove(struct platform_device *pdev)
struct wm831x_backup *devdata = platform_get_drvdata(pdev);
power_supply_unregister(&devdata->backup);
kfree(devdata->backup.name);
kfree(devdata);
return 0;
......
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