HID: alps: allow incoming reports when only the trackstick is opened (7dd8db68) · Commits · 戴 / test

If userspace only reads the trackstick node, and no one is listening to the touchpad nor the hidraw node then, the device is not powered on. Add open/close callbacks to allow users to disable the touchpad in Gnome while keeping the trackstick active. Link: https://bugzilla.redhat.com/show_bug.cgi?id=1559632 Link: https://gitlab.gnome.org/GNOME/mutter/issues/128 Signed-off-by:

drivers/hid/hid-alps.c

+18 −0

Original line number	Diff line number	Diff line
		@@ -660,6 +660,20 @@ exit:
		return ret;
		}

		static int alps_sp_open(struct input_dev *dev)
		{
		struct hid_device *hid = input_get_drvdata(dev);

		return hid_hw_open(hid);
		}

		static void alps_sp_close(struct input_dev *dev)
		{
		struct hid_device *hid = input_get_drvdata(dev);

		hid_hw_close(hid);
		}

		static int alps_input_configured(struct hid_device hdev, struct hid_input hi)
		{
		struct alps_dev *data = hid_get_drvdata(hdev);
		@@ -733,6 +747,10 @@ static int alps_input_configured(struct hid_device hdev, struct hid_input hi)
		input2->id.version = input->id.version;
		input2->dev.parent = input->dev.parent;

		input_set_drvdata(input2, hdev);
		input2->open = alps_sp_open;
		input2->close = alps_sp_close;

		__set_bit(EV_KEY, input2->evbit);
		data->sp_btn_cnt = (data->sp_btn_info & 0x0F);
		for (i = 0; i < data->sp_btn_cnt; i++)