diff options
Diffstat (limited to 'drivers/hwmon/ams/ams-input.c')
-rw-r--r-- | drivers/hwmon/ams/ams-input.c | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/drivers/hwmon/ams/ams-input.c b/drivers/hwmon/ams/ams-input.c deleted file mode 100644 index 8a71239..0000000 --- a/drivers/hwmon/ams/ams-input.c +++ /dev/null @@ -1,157 +0,0 @@ -/* - * Apple Motion Sensor driver (joystick emulation) - * - * Copyright (C) 2005 Stelian Pop (stelian@popies.net) - * Copyright (C) 2006 Michael Hanselmann (linux-kernel@hansmi.ch) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#include <linux/module.h> - -#include <linux/types.h> -#include <linux/errno.h> -#include <linux/init.h> -#include <linux/delay.h> - -#include "ams.h" - -static unsigned int joystick; -module_param(joystick, bool, S_IRUGO); -MODULE_PARM_DESC(joystick, "Enable the input class device on module load"); - -static unsigned int invert; -module_param(invert, bool, S_IWUSR | S_IRUGO); -MODULE_PARM_DESC(invert, "Invert input data on X and Y axis"); - -static DEFINE_MUTEX(ams_input_mutex); - -static void ams_idev_poll(struct input_polled_dev *dev) -{ - struct input_dev *idev = dev->input; - s8 x, y, z; - - mutex_lock(&ams_info.lock); - - ams_sensors(&x, &y, &z); - - x -= ams_info.xcalib; - y -= ams_info.ycalib; - z -= ams_info.zcalib; - - input_report_abs(idev, ABS_X, invert ? -x : x); - input_report_abs(idev, ABS_Y, invert ? -y : y); - input_report_abs(idev, ABS_Z, z); - - input_sync(idev); - - mutex_unlock(&ams_info.lock); -} - -/* Call with ams_info.lock held! */ -static int ams_input_enable(void) -{ - struct input_dev *input; - s8 x, y, z; - int error; - - ams_sensors(&x, &y, &z); - ams_info.xcalib = x; - ams_info.ycalib = y; - ams_info.zcalib = z; - - ams_info.idev = input_allocate_polled_device(); - if (!ams_info.idev) - return -ENOMEM; - - ams_info.idev->poll = ams_idev_poll; - ams_info.idev->poll_interval = 25; - - input = ams_info.idev->input; - input->name = "Apple Motion Sensor"; - input->id.bustype = ams_info.bustype; - input->id.vendor = 0; - input->dev.parent = &ams_info.of_dev->dev; - - input_set_abs_params(input, ABS_X, -50, 50, 3, 0); - input_set_abs_params(input, ABS_Y, -50, 50, 3, 0); - input_set_abs_params(input, ABS_Z, -50, 50, 3, 0); - - set_bit(EV_ABS, input->evbit); - set_bit(EV_KEY, input->evbit); - set_bit(BTN_TOUCH, input->keybit); - - error = input_register_polled_device(ams_info.idev); - if (error) { - input_free_polled_device(ams_info.idev); - ams_info.idev = NULL; - return error; - } - - joystick = 1; - - return 0; -} - -static void ams_input_disable(void) -{ - if (ams_info.idev) { - input_unregister_polled_device(ams_info.idev); - input_free_polled_device(ams_info.idev); - ams_info.idev = NULL; - } - - joystick = 0; -} - -static ssize_t ams_input_show_joystick(struct device *dev, - struct device_attribute *attr, char *buf) -{ - return sprintf(buf, "%d\n", joystick); -} - -static ssize_t ams_input_store_joystick(struct device *dev, - struct device_attribute *attr, const char *buf, size_t count) -{ - unsigned long enable; - int error = 0; - - if (strict_strtoul(buf, 0, &enable) || enable > 1) - return -EINVAL; - - mutex_lock(&ams_input_mutex); - - if (enable != joystick) { - if (enable) - error = ams_input_enable(); - else - ams_input_disable(); - } - - mutex_unlock(&ams_input_mutex); - - return error ? error : count; -} - -static DEVICE_ATTR(joystick, S_IRUGO | S_IWUSR, - ams_input_show_joystick, ams_input_store_joystick); - -int ams_input_init(void) -{ - if (joystick) - ams_input_enable(); - - return device_create_file(&ams_info.of_dev->dev, &dev_attr_joystick); -} - -void ams_input_exit(void) -{ - device_remove_file(&ams_info.of_dev->dev, &dev_attr_joystick); - - mutex_lock(&ams_input_mutex); - ams_input_disable(); - mutex_unlock(&ams_input_mutex); -} |