From: Chris Bagwell <chris@xxxxxxxxxxxxxx>
Signed-off-by: Chris Bagwell <chris@xxxxxxxxxxxxxx>
---
drivers/input/tablet/Kconfig | 1 +
drivers/input/tablet/wacom.h | 2 +
drivers/input/tablet/wacom_sys.c | 58 +++++++++++++++++++++++++++++++++++++-
drivers/input/tablet/wacom_wac.c | 5 ++-
drivers/input/tablet/wacom_wac.h | 1 +
5 files changed, 65 insertions(+), 2 deletions(-)
diff --git a/drivers/input/tablet/Kconfig b/drivers/input/tablet/Kconfig
index 58a8775..0edeb94 100644
--- a/drivers/input/tablet/Kconfig
+++ b/drivers/input/tablet/Kconfig
@@ -76,6 +76,7 @@ config TABLET_USB_KBTAB
config TABLET_USB_WACOM
tristate "Wacom Intuos/Graphire tablet support (USB)"
depends on USB_ARCH_HAS_HCD
+ select POWER_SUPPLY
select USB
help
Say Y here if you want to use the USB version of the Wacom Intuos
diff --git a/drivers/input/tablet/wacom.h b/drivers/input/tablet/wacom.h
index febbfd9..b4842d0 100644
--- a/drivers/input/tablet/wacom.h
+++ b/drivers/input/tablet/wacom.h
@@ -88,6 +88,7 @@
#include <linux/mod_devicetable.h>
#include <linux/init.h>
#include <linux/usb/input.h>
+#include <linux/power_supply.h>
#include <asm/unaligned.h>
/*
@@ -121,6 +122,7 @@ struct wacom {
u8 hlv; /* status led brightness button pressed (1..127) */
u8 img_lum; /* OLED matrix display brightness */
} led;
+ struct power_supply battery;
};
static inline void wacom_schedule_work(struct wacom_wac *wacom_wac)
diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c
index 2fc7705..fe8a7f6 100644
--- a/drivers/input/tablet/wacom_sys.c
+++ b/drivers/input/tablet/wacom_sys.c
@@ -843,6 +843,56 @@ 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 +1066,14 @@ 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 +1088,7 @@ 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 +1107,7 @@ 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,
diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c
index fce7a09..99fb6fe 100644
--- a/drivers/input/tablet/wacom_wac.c
+++ b/drivers/input/tablet/wacom_wac.c
@@ -1054,17 +1054,20 @@ static int wacom_wireless_irq(struct wacom_wac *wacom, size_t len)
connected = data[1] & 0x01;
if (connected) {
- int pid;
+ int pid, battery;
pid = get_unaligned_be16(&data[6]);
+ battery = data[5] & 0x3f;
if (wacom->pid != pid) {
wacom->pid = pid;
wacom_schedule_work(wacom);
}
+ wacom->battery_capacity = battery;
} else if (wacom->pid != 0) {
/* disconnected while previously connected */
wacom->pid = 0;
wacom_schedule_work(wacom);
+ wacom->battery_capacity = 0;
}
return 0;
diff --git a/drivers/input/tablet/wacom_wac.h b/drivers/input/tablet/wacom_wac.h
index cffaf6b..ba5a334 100644
--- a/drivers/input/tablet/wacom_wac.h
+++ b/drivers/input/tablet/wacom_wac.h
@@ -112,6 +112,7 @@ struct wacom_wac {
struct wacom_shared *shared;
struct input_dev *input;
int pid;
+ int battery_capacity;
};
#endif
--
1.7.7.6
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