diff options
Diffstat (limited to 'drivers/hwmon/ams/ams-input.c')
| -rw-r--r-- | drivers/hwmon/ams/ams-input.c | 160 |
1 files changed, 0 insertions, 160 deletions
diff --git a/drivers/hwmon/ams/ams-input.c b/drivers/hwmon/ams/ams-input.c deleted file mode 100644 index ca7095d96ad..00000000000 --- a/drivers/hwmon/ams/ams-input.c +++ /dev/null @@ -1,160 +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, 0644); -MODULE_PARM_DESC(joystick, "Enable the input class device on module load"); - -static unsigned int invert; -module_param(invert, bool, 0644); -MODULE_PARM_DESC(invert, "Invert input data on X and Y axis"); - -static int ams_input_kthread(void *data) -{ - s8 x, y, z; - - while (!kthread_should_stop()) { - 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(ams_info.idev, ABS_X, invert ? -x : x); - input_report_abs(ams_info.idev, ABS_Y, invert ? -y : y); - input_report_abs(ams_info.idev, ABS_Z, z); - - input_sync(ams_info.idev); - - mutex_unlock(&ams_info.lock); - - msleep(25); - } - - return 0; -} - -static int ams_input_open(struct input_dev *dev) -{ - ams_info.kthread = kthread_run(ams_input_kthread, NULL, "kams"); - return IS_ERR(ams_info.kthread) ? PTR_ERR(ams_info.kthread) : 0; -} - -static void ams_input_close(struct input_dev *dev) -{ - kthread_stop(ams_info.kthread); -} - -/* Call with ams_info.lock held! */ -static void ams_input_enable(void) -{ - s8 x, y, z; - - if (ams_info.idev) - return; - - ams_sensors(&x, &y, &z); - ams_info.xcalib = x; - ams_info.ycalib = y; - ams_info.zcalib = z; - - ams_info.idev = input_allocate_device(); - if (!ams_info.idev) - return; - - ams_info.idev->name = "Apple Motion Sensor"; - ams_info.idev->id.bustype = ams_info.bustype; - ams_info.idev->id.vendor = 0; - ams_info.idev->open = ams_input_open; - ams_info.idev->close = ams_input_close; - ams_info.idev->dev.parent = &ams_info.of_dev->dev; - - input_set_abs_params(ams_info.idev, ABS_X, -50, 50, 3, 0); - input_set_abs_params(ams_info.idev, ABS_Y, -50, 50, 3, 0); - input_set_abs_params(ams_info.idev, ABS_Z, -50, 50, 3, 0); - - set_bit(EV_ABS, ams_info.idev->evbit); - set_bit(EV_KEY, ams_info.idev->evbit); - set_bit(BTN_TOUCH, ams_info.idev->keybit); - - if (input_register_device(ams_info.idev)) { - input_free_device(ams_info.idev); - ams_info.idev = NULL; - return; - } -} - -/* Call with ams_info.lock held! */ -static void ams_input_disable(void) -{ - if (ams_info.idev) { - input_unregister_device(ams_info.idev); - ams_info.idev = NULL; - } -} - -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) -{ - if (sscanf(buf, "%d\n", &joystick) != 1) - return -EINVAL; - - mutex_lock(&ams_info.lock); - - if (joystick) - ams_input_enable(); - else - ams_input_disable(); - - mutex_unlock(&ams_info.lock); - - return count; -} - -static DEVICE_ATTR(joystick, S_IRUGO | S_IWUSR, - ams_input_show_joystick, ams_input_store_joystick); - -/* Call with ams_info.lock held! */ -int ams_input_init(void) -{ - int result; - - result = device_create_file(&ams_info.of_dev->dev, &dev_attr_joystick); - - if (!result && joystick) - ams_input_enable(); - return result; -} - -/* Call with ams_info.lock held! */ -void ams_input_exit(void) -{ - ams_input_disable(); - device_remove_file(&ams_info.of_dev->dev, &dev_attr_joystick); -} |