diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/power/power_supply_sysfs.c | 4 | ||||
| -rw-r--r-- | drivers/power/wm831x_power.c | 44 |
2 files changed, 30 insertions, 18 deletions
diff --git a/drivers/power/power_supply_sysfs.c b/drivers/power/power_supply_sysfs.c index 605514afc29..eb9a986c4f9 100644 --- a/drivers/power/power_supply_sysfs.c +++ b/drivers/power/power_supply_sysfs.c @@ -77,8 +77,8 @@ static ssize_t power_supply_show_property(struct device *dev, dev_dbg(dev, "driver has no data for `%s' property\n", attr->attr.name); else if (ret != -ENODEV) - dev_err(dev, "driver failed to report `%s' property\n", - attr->attr.name); + dev_err(dev, "driver failed to report `%s' property: %d\n", + attr->attr.name, ret); return ret; } diff --git a/drivers/power/wm831x_power.c b/drivers/power/wm831x_power.c index 6cc2ca6427f..c32e6f83c7a 100644 --- a/drivers/power/wm831x_power.c +++ b/drivers/power/wm831x_power.c @@ -27,6 +27,7 @@ struct wm831x_power { char wall_name[20]; char usb_name[20]; char battery_name[20]; + bool have_battery; }; static int wm831x_power_check_online(struct wm831x *wm831x, int supply, @@ -449,7 +450,8 @@ static irqreturn_t wm831x_bat_irq(int irq, void *data) /* The battery charger is autonomous so we don't need to do * anything except kick user space */ - power_supply_changed(&wm831x_power->battery); + if (wm831x_power->have_battery) + power_supply_changed(&wm831x_power->battery); return IRQ_HANDLED; } @@ -479,7 +481,8 @@ static irqreturn_t wm831x_pwr_src_irq(int irq, void *data) dev_dbg(wm831x->dev, "Power source changed\n"); /* Just notify for everything - little harm in overnotifying. */ - power_supply_changed(&wm831x_power->battery); + if (wm831x_power->have_battery) + power_supply_changed(&wm831x_power->battery); power_supply_changed(&wm831x_power->usb); power_supply_changed(&wm831x_power->wall); @@ -537,15 +540,6 @@ static __devinit int wm831x_power_probe(struct platform_device *pdev) if (ret) goto err_kmalloc; - battery->name = power->battery_name; - battery->properties = wm831x_bat_props; - battery->num_properties = ARRAY_SIZE(wm831x_bat_props); - battery->get_property = wm831x_bat_get_prop; - battery->use_for_apm = 1; - ret = power_supply_register(&pdev->dev, battery); - if (ret) - goto err_wall; - usb->name = power->usb_name, usb->type = POWER_SUPPLY_TYPE_USB; usb->properties = wm831x_usb_props; @@ -553,7 +547,23 @@ static __devinit int wm831x_power_probe(struct platform_device *pdev) usb->get_property = wm831x_usb_get_prop; ret = power_supply_register(&pdev->dev, usb); if (ret) - goto err_battery; + goto err_wall; + + ret = wm831x_reg_read(wm831x, WM831X_CHARGER_CONTROL_1); + if (ret < 0) + goto err_wall; + power->have_battery = ret & WM831X_CHG_ENA; + + if (power->have_battery) { + battery->name = power->battery_name; + battery->properties = wm831x_bat_props; + battery->num_properties = ARRAY_SIZE(wm831x_bat_props); + battery->get_property = wm831x_bat_get_prop; + battery->use_for_apm = 1; + ret = power_supply_register(&pdev->dev, battery); + if (ret) + goto err_usb; + } irq = platform_get_irq_byname(pdev, "SYSLO"); ret = request_threaded_irq(irq, NULL, wm831x_syslo_irq, @@ -562,7 +572,7 @@ static __devinit int wm831x_power_probe(struct platform_device *pdev) if (ret != 0) { dev_err(&pdev->dev, "Failed to request SYSLO IRQ %d: %d\n", irq, ret); - goto err_usb; + goto err_battery; } irq = platform_get_irq_byname(pdev, "PWR SRC"); @@ -601,10 +611,11 @@ err_bat_irq: err_syslo: irq = platform_get_irq_byname(pdev, "SYSLO"); free_irq(irq, power); +err_battery: + if (power->have_battery) + power_supply_unregister(battery); err_usb: power_supply_unregister(usb); -err_battery: - power_supply_unregister(battery); err_wall: power_supply_unregister(wall); err_kmalloc: @@ -628,7 +639,8 @@ static __devexit int wm831x_power_remove(struct platform_device *pdev) irq = platform_get_irq_byname(pdev, "SYSLO"); free_irq(irq, wm831x_power); - power_supply_unregister(&wm831x_power->battery); + if (wm831x_power->have_battery) + power_supply_unregister(&wm831x_power->battery); power_supply_unregister(&wm831x_power->wall); power_supply_unregister(&wm831x_power->usb); kfree(wm831x_power); |