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authorBenjamin Tissoires <benjamin.tissoires@redhat.com>2017-03-27 17:59:39 +0300
committerJiri Kosina <jkosina@suse.cz>2017-04-06 15:36:39 +0300
commita4bf6153b317754e058ad9c7f5f02367e0bfdcc8 (patch)
treefdff0add614014eeebceeb275783943d441b5fc0 /drivers/hid
parent7f7ce2a258b47f9510ad613328c046a3ff9426b0 (diff)
downloadlinux-a4bf6153b317754e058ad9c7f5f02367e0bfdcc8.tar.xz
HID: logitech-hidpp: add a sysfs file to tell we support power_supply
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>
Diffstat (limited to 'drivers/hid')
-rw-r--r--drivers/hid/hid-logitech-hidpp.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c
index eb4339e91f23..41b39464ded8 100644
--- a/drivers/hid/hid-logitech-hidpp.c
+++ b/drivers/hid/hid-logitech-hidpp.c
@@ -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);