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HID: logitech-hidpp: add a sysfs file to tell we support power_supply

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This way, upower can add a simple udev rule to decide whether or not
it should use the internal unifying support or just the generic kernel
one.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Benjamin Tissoires 2017-03-27 16:59:39 +02:00 committed by Jiri Kosina
parent 7f7ce2a258
commit a4bf6153b3
1 changed files with 20 additions and 0 deletions
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20
drivers/hid/hid-logitech-hidpp.c
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@ -2916,6 +2916,17 @@ static void hidpp_connect_event(struct hidpp_device *hidpp)
hidpp->delayed_input = input;
}
static DEVICE_ATTR(builtin_power_supply, 0000, NULL, NULL);
static struct attribute *sysfs_attrs[] = {
&dev_attr_builtin_power_supply.attr,
NULL
};
static struct attribute_group ps_attribute_group = {
.attrs = sysfs_attrs
};
static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
struct hidpp_device *hidpp;
@ -2960,6 +2971,12 @@ static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id)
mutex_init(&hidpp->send_mutex);
init_waitqueue_head(&hidpp->wait);
/* indicates we are handling the battery properties in the kernel */
ret = sysfs_create_group(&hdev->dev.kobj, &ps_attribute_group);
if (ret)
hid_warn(hdev, "Cannot allocate sysfs group for %s\n",
hdev->name);
ret = hid_parse(hdev);
if (ret) {
hid_err(hdev, "%s:parse failed\n", __func__);
@ -3042,6 +3059,7 @@ hid_hw_open_failed:
}
hid_hw_start_fail:
hid_parse_fail:
sysfs_remove_group(&hdev->dev.kobj, &ps_attribute_group);
cancel_work_sync(&hidpp->work);
mutex_destroy(&hidpp->send_mutex);
allocate_fail:
@ -3053,6 +3071,8 @@ static void hidpp_remove(struct hid_device *hdev)
{
struct hidpp_device *hidpp = hid_get_drvdata(hdev);
sysfs_remove_group(&hdev->dev.kobj, &ps_attribute_group);
if (hidpp->quirks & HIDPP_QUIRK_CLASS_G920) {
hidpp_ff_deinit(hdev);
hid_hw_close(hdev);