From: Tatsunosuke Tobita <tatsunosuke.tobita@xxxxxxxxx>
Even if a user does not use their AES pen for an extended period,
the battery power supply attributes continue to exist.
This results in the desktop showing battery status for a pen
that is no longer in use and which may in fact be in a different
state (e.g. the user may be charging the pen).
To avoid confusion and ensure userspace has an accurate view
of the battery state, this patch automatically removes
the power_supply after 30 minutes of inactivity.
Signed-off-by: Tatsunosuke Tobita <tatsunosuke.tobita@xxxxxxxxx>
Reviewed-by: Jason Gerecke <Jason.Gerecke@xxxxxxxxx>
Reviewed-by: Aaron Skomra <aaron.skomra@xxxxxxxxx>
Reviewed-by: Josh Dickens <joshua.dickens@xxxxxxxxx>
---
drivers/hid/wacom.h | 2 ++
drivers/hid/wacom_sys.c | 52 ++++++++++++++++++++++++++++++-----------
drivers/hid/wacom_wac.c | 19 +++++++++++----
drivers/hid/wacom_wac.h | 5 ++--
4 files changed, 58 insertions(+), 20 deletions(-)
diff --git a/drivers/hid/wacom.h b/drivers/hid/wacom.h
index 4da50e19808e..77c5fb26cd14 100644
--- a/drivers/hid/wacom.h
+++ b/drivers/hid/wacom.h
@@ -150,6 +150,7 @@ struct wacom_remote {
struct input_dev *input;
bool registered;
struct wacom_battery battery;
+ ktime_t active_time;
} remotes[WACOM_MAX_REMOTES];
};
@@ -163,6 +164,7 @@ struct wacom {
struct work_struct battery_work;
struct work_struct remote_work;
struct delayed_work init_work;
+ struct delayed_work aes_battery_work;
struct wacom_remote *remote;
struct work_struct mode_change_work;
struct timer_list idleprox_timer;
diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c
index 76e5353aca0c..b613f11ed949 100644
--- a/drivers/hid/wacom_sys.c
+++ b/drivers/hid/wacom_sys.c
@@ -1813,6 +1813,13 @@ static void wacom_destroy_battery(struct wacom *wacom)
}
}
+static void wacom_aes_battery_handler(struct work_struct *work)
+{
+ struct wacom *wacom = container_of(work, struct wacom, aes_battery_work.work);
+
+ wacom_destroy_battery(wacom);
+}
+
static ssize_t wacom_show_speed(struct device *dev,
struct device_attribute
*attr, char *buf)
@@ -1997,7 +2004,7 @@ static int wacom_initialize_remotes(struct wacom *wacom)
spin_lock_init(&remote->remote_lock);
error = kfifo_alloc(&remote->remote_fifo,
- 5 * sizeof(struct wacom_remote_data),
+ 5 * sizeof(struct wacom_remote_work_data),
GFP_KERNEL);
if (error) {
hid_err(wacom->hdev, "failed allocating remote_fifo\n");
@@ -2523,6 +2530,18 @@ static void wacom_wireless_work(struct work_struct *work)
return;
}
+static void wacom_remote_destroy_battery(struct wacom *wacom, int index)
+{
+ struct wacom_remote *remote = wacom->remote;
+
+ if (remote->remotes[index].battery.battery) {
+ devres_release_group(&wacom->hdev->dev,
+ &remote->remotes[index].battery.bat_desc);
+ remote->remotes[index].battery.battery = NULL;
+ remote->remotes[index].active_time = 0;
+ }
+}
+
static void wacom_remote_destroy_one(struct wacom *wacom, unsigned int index)
{
struct wacom_remote *remote = wacom->remote;
@@ -2537,9 +2556,7 @@ static void wacom_remote_destroy_one(struct wacom *wacom, unsigned int index)
remote->remotes[i].registered = false;
spin_unlock_irqrestore(&remote->remote_lock, flags);
- if (remote->remotes[i].battery.battery)
- devres_release_group(&wacom->hdev->dev,
- &remote->remotes[i].battery.bat_desc);
+ wacom_remote_destroy_battery(wacom, i);
if (remote->remotes[i].group.name)
devres_release_group(&wacom->hdev->dev,
@@ -2547,7 +2564,6 @@ static void wacom_remote_destroy_one(struct wacom *wacom, unsigned int index)
remote->remotes[i].serial = 0;
remote->remotes[i].group.name = NULL;
- remote->remotes[i].battery.battery = NULL;
wacom->led.groups[i].select = WACOM_STATUS_UNKNOWN;
}
}
@@ -2632,6 +2648,9 @@ static int wacom_remote_attach_battery(struct wacom *wacom, int index)
if (remote->remotes[index].battery.battery)
return 0;
+ if (!remote->remotes[index].active_time)
+ return 0;
+
if (wacom->led.groups[index].select == WACOM_STATUS_UNKNOWN)
return 0;
@@ -2647,17 +2666,19 @@ static void wacom_remote_work(struct work_struct *work)
{
struct wacom *wacom = container_of(work, struct wacom, remote_work);
struct wacom_remote *remote = wacom->remote;
- struct wacom_remote_data data;
+ ktime_t kt = ktime_get();
+ struct wacom_remote_work_data remote_work_data;
unsigned long flags;
unsigned int count;
- u32 serial;
+ u32 work_serial;
int i;
spin_lock_irqsave(&remote->remote_lock, flags);
- count = kfifo_out(&remote->remote_fifo, &data, sizeof(data));
+ count = kfifo_out(&remote->remote_fifo, &remote_work_data,
+ sizeof(remote_work_data));
- if (count != sizeof(data)) {
+ if (count != sizeof(remote_work_data)) {
hid_err(wacom->hdev,
"workitem triggered without status available\n");
spin_unlock_irqrestore(&remote->remote_lock, flags);
@@ -2670,10 +2691,14 @@ static void wacom_remote_work(struct work_struct *work)
spin_unlock_irqrestore(&remote->remote_lock, flags);
for (i = 0; i < WACOM_MAX_REMOTES; i++) {
- serial = data.remote[i].serial;
- if (data.remote[i].connected) {
+ work_serial = remote_work_data.remote[i].serial;
+ if (work_serial) {
+
+ if (kt - remote->remotes[i].active_time > WACOM_REMOTE_BATTERY_TIMEOUT
+ && remote->remotes[i].active_time != 0)
+ wacom_remote_destroy_battery(wacom, i);
- if (remote->remotes[i].serial == serial) {
+ if (remote->remotes[i].serial == work_serial) {
wacom_remote_attach_battery(wacom, i);
continue;
}
@@ -2681,7 +2706,7 @@ static void wacom_remote_work(struct work_struct *work)
if (remote->remotes[i].serial)
wacom_remote_destroy_one(wacom, i);
- wacom_remote_create_one(wacom, serial, i);
+ wacom_remote_create_one(wacom, work_serial, i);
} else if (remote->remotes[i].serial) {
wacom_remote_destroy_one(wacom, i);
@@ -2776,6 +2801,7 @@ static int wacom_probe(struct hid_device *hdev,
mutex_init(&wacom->lock);
INIT_DELAYED_WORK(&wacom->init_work, wacom_init_work);
+ INIT_DELAYED_WORK(&wacom->aes_battery_work, wacom_aes_battery_handler);
INIT_WORK(&wacom->wireless_work, wacom_wireless_work);
INIT_WORK(&wacom->battery_work, wacom_battery_work);
INIT_WORK(&wacom->remote_work, wacom_remote_work);
diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c
index 174bf03908d7..c205198ded11 100644
--- a/drivers/hid/wacom_wac.c
+++ b/drivers/hid/wacom_wac.c
@@ -1134,6 +1134,7 @@ static int wacom_remote_irq(struct wacom_wac *wacom_wac, size_t len)
if (index < 0 || !remote->remotes[index].registered)
goto out;
+ remote->remotes[i].active_time = ktime_get();
input = remote->remotes[index].input;
input_report_key(input, BTN_0, (data[9] & 0x01));
@@ -1196,22 +1197,20 @@ static void wacom_remote_status_irq(struct wacom_wac *wacom_wac, size_t len)
struct wacom *wacom = container_of(wacom_wac, struct wacom, wacom_wac);
unsigned char *data = wacom_wac->data;
struct wacom_remote *remote = wacom->remote;
- struct wacom_remote_data remote_data;
+ struct wacom_remote_work_data remote_data;
unsigned long flags;
int i, ret;
if (data[0] != WACOM_REPORT_DEVICE_LIST)
return;
- memset(&remote_data, 0, sizeof(struct wacom_remote_data));
+ memset(&remote_data, 0, sizeof(struct wacom_remote_work_data));
for (i = 0; i < WACOM_MAX_REMOTES; i++) {
int j = i * 6;
int serial = (data[j+6] << 16) + (data[j+5] << 8) + data[j+4];
- bool connected = data[j+2];
remote_data.remote[i].serial = serial;
- remote_data.remote[i].connected = connected;
}
spin_lock_irqsave(&remote->remote_lock, flags);
@@ -2529,11 +2528,12 @@ static void wacom_wac_pen_report(struct hid_device *hdev,
struct input_dev *input = wacom_wac->pen_input;
bool range = wacom_wac->hid_data.inrange_state;
bool sense = wacom_wac->hid_data.sense_state;
+ bool entering_range = !wacom_wac->tool[0] && range;
if (wacom_wac->is_invalid_bt_frame)
return;
- if (!wacom_wac->tool[0] && range) { /* first in range */
+ if (entering_range) { /* first in range */
/* Going into range select tool */
if (wacom_wac->hid_data.invert_state)
wacom_wac->tool[0] = BTN_TOOL_RUBBER;
@@ -2584,6 +2584,15 @@ static void wacom_wac_pen_report(struct hid_device *hdev,
input_sync(input);
}
+ /* Handle AES battery timeout behavior */
+ if (wacom_wac->features.quirks & WACOM_QUIRK_AESPEN) {
+ if (entering_range)
+ cancel_delayed_work(&wacom->aes_battery_work);
+ if (!sense)
+ schedule_delayed_work(&wacom->aes_battery_work,
+ msecs_to_jiffies(WACOM_AES_BATTERY_TIMEOUT));
+ }
+
if (!sense) {
wacom_wac->tool[0] = 0;
wacom_wac->id[0] = 0;
diff --git a/drivers/hid/wacom_wac.h b/drivers/hid/wacom_wac.h
index ee21bb260f22..e63b1e806e34 100644
--- a/drivers/hid/wacom_wac.h
+++ b/drivers/hid/wacom_wac.h
@@ -13,6 +13,8 @@
#define WACOM_NAME_MAX 64
#define WACOM_MAX_REMOTES 5
#define WACOM_STATUS_UNKNOWN 255
+#define WACOM_REMOTE_BATTERY_TIMEOUT 21000000000ll
+#define WACOM_AES_BATTERY_TIMEOUT 1800000
/* packet length for individual models */
#define WACOM_PKGLEN_BBFUN 9
@@ -327,10 +329,9 @@ struct hid_data {
ktime_t time_delayed;
};
-struct wacom_remote_data {
+struct wacom_remote_work_data {
struct {
u32 serial;
- bool connected;
} remote[WACOM_MAX_REMOTES];
};
--
2.34.1
