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Date: Thu, 10 Jul 2014 14:44:56 -0400
From: Benjamin Tissoires <benjamin.tissoires@...hat.com>
To: Przemo Firszt <przemo@...szt.eu>,
Dmitry Torokhov <dmitry.torokhov@...il.com>,
Jiri Kosina <jkosina@...e.cz>,
Ping Cheng <pinglinux@...il.com>,
Jason Gerecke <killertofu@...il.com>
Cc: linux-kernel@...r.kernel.org, linux-input@...r.kernel.org
Subject: [PATCH 1/5] Input - wacom: enhance Wireless Receiver battery reporting
- Reports the current status of the battery (discharging, cherging, full).
- Also notify the upower daemon when there is a change in the battery
value.
- keep the battery value as a percentage, not the raw value
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@...hat.com>
---
drivers/input/tablet/wacom.h | 6 ++++++
drivers/input/tablet/wacom_sys.c | 13 ++++++++++++-
drivers/input/tablet/wacom_wac.c | 18 +++++++++++++++---
drivers/input/tablet/wacom_wac.h | 2 ++
4 files changed, 35 insertions(+), 4 deletions(-)
diff --git a/drivers/input/tablet/wacom.h b/drivers/input/tablet/wacom.h
index a678f82..99516ba 100644
--- a/drivers/input/tablet/wacom.h
+++ b/drivers/input/tablet/wacom.h
@@ -128,6 +128,12 @@ static inline void wacom_schedule_work(struct wacom_wac *wacom_wac)
schedule_work(&wacom->work);
}
+static inline void wacom_notify_battery(struct wacom_wac *wacom_wac)
+{
+ struct wacom *wacom = container_of(wacom_wac, struct wacom, wacom_wac);
+ power_supply_changed(&wacom->battery);
+}
+
extern const struct hid_device_id wacom_ids[];
void wacom_wac_irq(struct wacom_wac *wacom_wac, size_t len);
diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c
index fb2958e..1888709 100644
--- a/drivers/input/tablet/wacom_sys.c
+++ b/drivers/input/tablet/wacom_sys.c
@@ -766,6 +766,7 @@ static void wacom_destroy_leds(struct wacom *wacom)
}
static enum power_supply_property wacom_battery_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_SCOPE,
POWER_SUPPLY_PROP_CAPACITY
};
@@ -783,7 +784,16 @@ static int wacom_battery_get_property(struct power_supply *psy,
break;
case POWER_SUPPLY_PROP_CAPACITY:
val->intval =
- wacom->wacom_wac.battery_capacity * 100 / 31;
+ wacom->wacom_wac.battery_capacity;
+ break;
+ case POWER_SUPPLY_PROP_STATUS:
+ if (wacom->wacom_wac.bat_charging)
+ val->intval = POWER_SUPPLY_STATUS_CHARGING;
+ else if (wacom->wacom_wac.battery_capacity == 100 &&
+ wacom->wacom_wac.ps_connected)
+ val->intval = POWER_SUPPLY_STATUS_FULL;
+ else
+ val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
break;
default:
ret = -EINVAL;
@@ -944,6 +954,7 @@ static void wacom_wireless_work(struct work_struct *work)
if (wacom_wac->pid == 0) {
hid_info(wacom->hdev, "wireless tablet disconnected\n");
+ wacom_wac1->shared->type = 0;
} else {
const struct hid_device_id *id = wacom_ids;
diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c
index cd91521..d935f75 100644
--- a/drivers/input/tablet/wacom_wac.c
+++ b/drivers/input/tablet/wacom_wac.c
@@ -1365,7 +1365,7 @@ static int wacom_wireless_irq(struct wacom_wac *wacom, size_t len)
connected = data[1] & 0x01;
if (connected) {
- int pid, battery;
+ int pid, battery, ps_connected;
if ((wacom->shared->type == INTUOSHT) &&
wacom->shared->touch_max) {
@@ -1375,17 +1375,29 @@ static int wacom_wireless_irq(struct wacom_wac *wacom, size_t len)
}
pid = get_unaligned_be16(&data[6]);
- battery = data[5] & 0x3f;
+ battery = (data[5] & 0x3f) * 100 / 31;
+ ps_connected = data[5] & 0x80;
if (wacom->pid != pid) {
wacom->pid = pid;
wacom_schedule_work(wacom);
}
- wacom->battery_capacity = battery;
+
+ if (wacom->shared->type &&
+ ((battery != wacom->battery_capacity) ||
+ (ps_connected != wacom->ps_connected))) {
+ wacom->battery_capacity = battery;
+ wacom->ps_connected = ps_connected;
+ wacom->bat_charging = ps_connected &&
+ wacom->battery_capacity < 100;
+ wacom_notify_battery(wacom);
+ }
} else if (wacom->pid != 0) {
/* disconnected while previously connected */
wacom->pid = 0;
wacom_schedule_work(wacom);
wacom->battery_capacity = 0;
+ wacom->bat_charging = 0;
+ wacom->ps_connected = 0;
}
return 0;
diff --git a/drivers/input/tablet/wacom_wac.h b/drivers/input/tablet/wacom_wac.h
index 4c59247..68cf257 100644
--- a/drivers/input/tablet/wacom_wac.h
+++ b/drivers/input/tablet/wacom_wac.h
@@ -164,6 +164,8 @@ struct wacom_wac {
int pid;
int battery_capacity;
int num_contacts_left;
+ int bat_charging;
+ int ps_connected;
};
#endif
--
2.0.0
--
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