1 // SPDX-License-Identifier: GPL-2.0-or-later
6  * Copyright (C) 2006 Michael Hanselmann (linux-kernel@hansmi.ch)
20 MODULE_PARM_DESC(joystick, "Enable the input class device on module load");
22 static bool invert;  variable
23 module_param(invert, bool, S_IWUSR | S_IRUGO);
24 MODULE_PARM_DESC(invert, "Invert input data on X and Y axis");
36 	x -= ams_info.xcalib;  in ams_idev_poll()
37 	y -= ams_info.ycalib;  in ams_idev_poll()
38 	z -= ams_info.zcalib;  in ams_idev_poll()
40 	input_report_abs(idev, ABS_X, invert ? -x : x);  in ams_idev_poll()
41 	input_report_abs(idev, ABS_Y, invert ? -y : y);  in ams_idev_poll()
63 		return -ENOMEM;  in ams_input_enable()
65 	input->name = "Apple Motion Sensor";  in ams_input_enable()
66 	input->id.bustype = ams_info.bustype;  in ams_input_enable()
67 	input->id.vendor = 0;  in ams_input_enable()
68 	input->dev.parent = &ams_info.of_dev->dev;  in ams_input_enable()
70 	input_set_abs_params(input, ABS_X, -50, 50, 3, 0);  in ams_input_enable()
71 	input_set_abs_params(input, ABS_Y, -50, 50, 3, 0);  in ams_input_enable()
72 	input_set_abs_params(input, ABS_Z, -50, 50, 3, 0);  in ams_input_enable()
114 	unsigned long enable;  in ams_input_store_joystick()  local
118 	ret = kstrtoul(buf, 0, &enable);  in ams_input_store_joystick()
121 	if (enable > 1)  in ams_input_store_joystick()
122 		return -EINVAL;  in ams_input_store_joystick()
126 	if (enable != joystick) {  in ams_input_store_joystick()
127 		if (enable)  in ams_input_store_joystick()
146 	return device_create_file(&ams_info.of_dev->dev, &dev_attr_joystick);  in ams_input_init()
151 	device_remove_file(&ams_info.of_dev->dev, &dev_attr_joystick);  in ams_input_exit()