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authorMark Brown <broonie@opensource.wolfsonmicro.com>2011-05-31 13:30:10 +0100
committerAnton Vorontsov <cbouatmailru@gmail.com>2011-07-08 16:56:47 +0400
commitd03760318edbc78b72cb7fa96bddb65263384d24 (patch)
tree8bfb9911bbd9b5e2805585196adc6b8581ef2dda
parentc84cad3d0fbb09dbfb30336ab05181cdbe097634 (diff)
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: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
-rw-r--r--drivers/power/wm831x_backup.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/power/wm831x_backup.c b/drivers/power/wm831x_backup.c
index 0fd130d80f5d..e648cbea1e6a 100644
--- a/drivers/power/wm831x_backup.c
+++ b/drivers/power/wm831x_backup.c
@@ -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;