diff options
| author | Chris Bagwell <chris@cnpbagwell.com> | 2012-03-25 23:26:30 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-03-25 23:33:17 -0700 |
| commit | a1d552cc15b0be9124ccba593f99f59c4ec1e153 (patch) | |
| tree | bae307464abfba32dfc3a4c19bbe38c1106746fe /drivers/input/tablet/wacom_sys.c | |
| parent | 16bf288c4be67b68c3fcb6561ff145702cb7bd22 (diff) | |
| download | lwn-a1d552cc15b0be9124ccba593f99f59c4ec1e153.tar.gz lwn-a1d552cc15b0be9124ccba593f99f59c4ec1e153.zip | |
Input: wacom - wireless battery status
Signed-off-by: Chris Bagwell <chris@cnpbagwell.com>
Tested-by: Jason Gerecke <killertofu@gmail.com>
Acked-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input/tablet/wacom_sys.c')
| -rw-r--r-- | drivers/input/tablet/wacom_sys.c | 57 |
1 files changed, 56 insertions, 1 deletions
diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c index 2fc77053960f..19ba58640dc2 100644 --- a/drivers/input/tablet/wacom_sys.c +++ b/drivers/input/tablet/wacom_sys.c @@ -843,6 +843,55 @@ static void wacom_destroy_leds(struct wacom *wacom) } } +static enum power_supply_property wacom_battery_props[] = { + POWER_SUPPLY_PROP_CAPACITY +}; + +static int wacom_battery_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct wacom *wacom = container_of(psy, struct wacom, battery); + int ret = 0; + + switch (psp) { + case POWER_SUPPLY_PROP_CAPACITY: + val->intval = + wacom->wacom_wac.battery_capacity * 100 / 31; + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} + +static int wacom_initialize_battery(struct wacom *wacom) +{ + int error = 0; + + if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_MONITOR) { + wacom->battery.properties = wacom_battery_props; + wacom->battery.num_properties = ARRAY_SIZE(wacom_battery_props); + wacom->battery.get_property = wacom_battery_get_property; + wacom->battery.name = "wacom_battery"; + wacom->battery.type = POWER_SUPPLY_TYPE_BATTERY; + wacom->battery.use_for_apm = 0; + + error = power_supply_register(&wacom->usbdev->dev, + &wacom->battery); + } + + return error; +} + +static void wacom_destroy_battery(struct wacom *wacom) +{ + if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_MONITOR) + power_supply_unregister(&wacom->battery); +} + static int wacom_register_input(struct wacom *wacom) { struct input_dev *input_dev; @@ -1016,10 +1065,14 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i if (error) goto fail4; + error = wacom_initialize_battery(wacom); + if (error) + goto fail5; + if (!(features->quirks & WACOM_QUIRK_NO_INPUT)) { error = wacom_register_input(wacom); if (error) - goto fail5; + goto fail6; } /* Note that if query fails it is not a hard failure */ @@ -1034,6 +1087,7 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i return 0; + fail6: wacom_destroy_battery(wacom); fail5: wacom_destroy_leds(wacom); fail4: wacom_remove_shared_data(wacom_wac); fail3: usb_free_urb(wacom->irq); @@ -1052,6 +1106,7 @@ static void wacom_disconnect(struct usb_interface *intf) cancel_work_sync(&wacom->work); if (wacom->wacom_wac.input) input_unregister_device(wacom->wacom_wac.input); + wacom_destroy_battery(wacom); wacom_destroy_leds(wacom); usb_free_urb(wacom->irq); usb_free_coherent(interface_to_usbdev(intf), WACOM_PKGLEN_MAX, |