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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/drivers/input/joydev.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/drivers/input/joydev.c')
-rw-r--r--ANDROID_3.4.5/drivers/input/joydev.c981
1 files changed, 0 insertions, 981 deletions
diff --git a/ANDROID_3.4.5/drivers/input/joydev.c b/ANDROID_3.4.5/drivers/input/joydev.c
deleted file mode 100644
index 26043cc6..00000000
--- a/ANDROID_3.4.5/drivers/input/joydev.c
+++ /dev/null
@@ -1,981 +0,0 @@
-/*
- * Joystick device driver for the input driver suite.
- *
- * Copyright (c) 1999-2002 Vojtech Pavlik
- * Copyright (c) 1999 Colin Van Dyke
- *
- * 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.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <asm/io.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/joystick.h>
-#include <linux/input.h>
-#include <linux/kernel.h>
-#include <linux/major.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/mm.h>
-#include <linux/miscdevice.h>
-#include <linux/module.h>
-#include <linux/poll.h>
-#include <linux/init.h>
-#include <linux/device.h>
-
-MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
-MODULE_DESCRIPTION("Joystick device interfaces");
-MODULE_SUPPORTED_DEVICE("input/js");
-MODULE_LICENSE("GPL");
-
-#define JOYDEV_MINOR_BASE 0
-#define JOYDEV_MINORS 16
-#define JOYDEV_BUFFER_SIZE 64
-
-struct joydev {
- int open;
- int minor;
- struct input_handle handle;
- wait_queue_head_t wait;
- struct list_head client_list;
- spinlock_t client_lock; /* protects client_list */
- struct mutex mutex;
- struct device dev;
- bool exist;
-
- struct js_corr corr[ABS_CNT];
- struct JS_DATA_SAVE_TYPE glue;
- int nabs;
- int nkey;
- __u16 keymap[KEY_MAX - BTN_MISC + 1];
- __u16 keypam[KEY_MAX - BTN_MISC + 1];
- __u8 absmap[ABS_CNT];
- __u8 abspam[ABS_CNT];
- __s16 abs[ABS_CNT];
-};
-
-struct joydev_client {
- struct js_event buffer[JOYDEV_BUFFER_SIZE];
- int head;
- int tail;
- int startup;
- spinlock_t buffer_lock; /* protects access to buffer, head and tail */
- struct fasync_struct *fasync;
- struct joydev *joydev;
- struct list_head node;
-};
-
-static struct joydev *joydev_table[JOYDEV_MINORS];
-static DEFINE_MUTEX(joydev_table_mutex);
-
-static int joydev_correct(int value, struct js_corr *corr)
-{
- switch (corr->type) {
-
- case JS_CORR_NONE:
- break;
-
- case JS_CORR_BROKEN:
- value = value > corr->coef[0] ? (value < corr->coef[1] ? 0 :
- ((corr->coef[3] * (value - corr->coef[1])) >> 14)) :
- ((corr->coef[2] * (value - corr->coef[0])) >> 14);
- break;
-
- default:
- return 0;
- }
-
- return value < -32767 ? -32767 : (value > 32767 ? 32767 : value);
-}
-
-static void joydev_pass_event(struct joydev_client *client,
- struct js_event *event)
-{
- struct joydev *joydev = client->joydev;
-
- /*
- * IRQs already disabled, just acquire the lock
- */
- spin_lock(&client->buffer_lock);
-
- client->buffer[client->head] = *event;
-
- if (client->startup == joydev->nabs + joydev->nkey) {
- client->head++;
- client->head &= JOYDEV_BUFFER_SIZE - 1;
- if (client->tail == client->head)
- client->startup = 0;
- }
-
- spin_unlock(&client->buffer_lock);
-
- kill_fasync(&client->fasync, SIGIO, POLL_IN);
-}
-
-static void joydev_event(struct input_handle *handle,
- unsigned int type, unsigned int code, int value)
-{
- struct joydev *joydev = handle->private;
- struct joydev_client *client;
- struct js_event event;
-
- switch (type) {
-
- case EV_KEY:
- if (code < BTN_MISC || value == 2)
- return;
- event.type = JS_EVENT_BUTTON;
- event.number = joydev->keymap[code - BTN_MISC];
- event.value = value;
- break;
-
- case EV_ABS:
- event.type = JS_EVENT_AXIS;
- event.number = joydev->absmap[code];
- event.value = joydev_correct(value,
- &joydev->corr[event.number]);
- if (event.value == joydev->abs[event.number])
- return;
- joydev->abs[event.number] = event.value;
- break;
-
- default:
- return;
- }
-
- event.time = jiffies_to_msecs(jiffies);
-
- rcu_read_lock();
- list_for_each_entry_rcu(client, &joydev->client_list, node)
- joydev_pass_event(client, &event);
- rcu_read_unlock();
-
- wake_up_interruptible(&joydev->wait);
-}
-
-static int joydev_fasync(int fd, struct file *file, int on)
-{
- struct joydev_client *client = file->private_data;
-
- return fasync_helper(fd, file, on, &client->fasync);
-}
-
-static void joydev_free(struct device *dev)
-{
- struct joydev *joydev = container_of(dev, struct joydev, dev);
-
- input_put_device(joydev->handle.dev);
- kfree(joydev);
-}
-
-static void joydev_attach_client(struct joydev *joydev,
- struct joydev_client *client)
-{
- spin_lock(&joydev->client_lock);
- list_add_tail_rcu(&client->node, &joydev->client_list);
- spin_unlock(&joydev->client_lock);
-}
-
-static void joydev_detach_client(struct joydev *joydev,
- struct joydev_client *client)
-{
- spin_lock(&joydev->client_lock);
- list_del_rcu(&client->node);
- spin_unlock(&joydev->client_lock);
- synchronize_rcu();
-}
-
-static int joydev_open_device(struct joydev *joydev)
-{
- int retval;
-
- retval = mutex_lock_interruptible(&joydev->mutex);
- if (retval)
- return retval;
-
- if (!joydev->exist)
- retval = -ENODEV;
- else if (!joydev->open++) {
- retval = input_open_device(&joydev->handle);
- if (retval)
- joydev->open--;
- }
-
- mutex_unlock(&joydev->mutex);
- return retval;
-}
-
-static void joydev_close_device(struct joydev *joydev)
-{
- mutex_lock(&joydev->mutex);
-
- if (joydev->exist && !--joydev->open)
- input_close_device(&joydev->handle);
-
- mutex_unlock(&joydev->mutex);
-}
-
-/*
- * Wake up users waiting for IO so they can disconnect from
- * dead device.
- */
-static void joydev_hangup(struct joydev *joydev)
-{
- struct joydev_client *client;
-
- spin_lock(&joydev->client_lock);
- list_for_each_entry(client, &joydev->client_list, node)
- kill_fasync(&client->fasync, SIGIO, POLL_HUP);
- spin_unlock(&joydev->client_lock);
-
- wake_up_interruptible(&joydev->wait);
-}
-
-static int joydev_release(struct inode *inode, struct file *file)
-{
- struct joydev_client *client = file->private_data;
- struct joydev *joydev = client->joydev;
-
- joydev_detach_client(joydev, client);
- kfree(client);
-
- joydev_close_device(joydev);
- put_device(&joydev->dev);
-
- return 0;
-}
-
-static int joydev_open(struct inode *inode, struct file *file)
-{
- struct joydev_client *client;
- struct joydev *joydev;
- int i = iminor(inode) - JOYDEV_MINOR_BASE;
- int error;
-
- if (i >= JOYDEV_MINORS)
- return -ENODEV;
-
- error = mutex_lock_interruptible(&joydev_table_mutex);
- if (error)
- return error;
- joydev = joydev_table[i];
- if (joydev)
- get_device(&joydev->dev);
- mutex_unlock(&joydev_table_mutex);
-
- if (!joydev)
- return -ENODEV;
-
- client = kzalloc(sizeof(struct joydev_client), GFP_KERNEL);
- if (!client) {
- error = -ENOMEM;
- goto err_put_joydev;
- }
-
- spin_lock_init(&client->buffer_lock);
- client->joydev = joydev;
- joydev_attach_client(joydev, client);
-
- error = joydev_open_device(joydev);
- if (error)
- goto err_free_client;
-
- file->private_data = client;
- nonseekable_open(inode, file);
-
- return 0;
-
- err_free_client:
- joydev_detach_client(joydev, client);
- kfree(client);
- err_put_joydev:
- put_device(&joydev->dev);
- return error;
-}
-
-static int joydev_generate_startup_event(struct joydev_client *client,
- struct input_dev *input,
- struct js_event *event)
-{
- struct joydev *joydev = client->joydev;
- int have_event;
-
- spin_lock_irq(&client->buffer_lock);
-
- have_event = client->startup < joydev->nabs + joydev->nkey;
-
- if (have_event) {
-
- event->time = jiffies_to_msecs(jiffies);
- if (client->startup < joydev->nkey) {
- event->type = JS_EVENT_BUTTON | JS_EVENT_INIT;
- event->number = client->startup;
- event->value = !!test_bit(joydev->keypam[event->number],
- input->key);
- } else {
- event->type = JS_EVENT_AXIS | JS_EVENT_INIT;
- event->number = client->startup - joydev->nkey;
- event->value = joydev->abs[event->number];
- }
- client->startup++;
- }
-
- spin_unlock_irq(&client->buffer_lock);
-
- return have_event;
-}
-
-static int joydev_fetch_next_event(struct joydev_client *client,
- struct js_event *event)
-{
- int have_event;
-
- spin_lock_irq(&client->buffer_lock);
-
- have_event = client->head != client->tail;
- if (have_event) {
- *event = client->buffer[client->tail++];
- client->tail &= JOYDEV_BUFFER_SIZE - 1;
- }
-
- spin_unlock_irq(&client->buffer_lock);
-
- return have_event;
-}
-
-/*
- * Old joystick interface
- */
-static ssize_t joydev_0x_read(struct joydev_client *client,
- struct input_dev *input,
- char __user *buf)
-{
- struct joydev *joydev = client->joydev;
- struct JS_DATA_TYPE data;
- int i;
-
- spin_lock_irq(&input->event_lock);
-
- /*
- * Get device state
- */
- for (data.buttons = i = 0; i < 32 && i < joydev->nkey; i++)
- data.buttons |=
- test_bit(joydev->keypam[i], input->key) ? (1 << i) : 0;
- data.x = (joydev->abs[0] / 256 + 128) >> joydev->glue.JS_CORR.x;
- data.y = (joydev->abs[1] / 256 + 128) >> joydev->glue.JS_CORR.y;
-
- /*
- * Reset reader's event queue
- */
- spin_lock(&client->buffer_lock);
- client->startup = 0;
- client->tail = client->head;
- spin_unlock(&client->buffer_lock);
-
- spin_unlock_irq(&input->event_lock);
-
- if (copy_to_user(buf, &data, sizeof(struct JS_DATA_TYPE)))
- return -EFAULT;
-
- return sizeof(struct JS_DATA_TYPE);
-}
-
-static inline int joydev_data_pending(struct joydev_client *client)
-{
- struct joydev *joydev = client->joydev;
-
- return client->startup < joydev->nabs + joydev->nkey ||
- client->head != client->tail;
-}
-
-static ssize_t joydev_read(struct file *file, char __user *buf,
- size_t count, loff_t *ppos)
-{
- struct joydev_client *client = file->private_data;
- struct joydev *joydev = client->joydev;
- struct input_dev *input = joydev->handle.dev;
- struct js_event event;
- int retval;
-
- if (!joydev->exist)
- return -ENODEV;
-
- if (count < sizeof(struct js_event))
- return -EINVAL;
-
- if (count == sizeof(struct JS_DATA_TYPE))
- return joydev_0x_read(client, input, buf);
-
- if (!joydev_data_pending(client) && (file->f_flags & O_NONBLOCK))
- return -EAGAIN;
-
- retval = wait_event_interruptible(joydev->wait,
- !joydev->exist || joydev_data_pending(client));
- if (retval)
- return retval;
-
- if (!joydev->exist)
- return -ENODEV;
-
- while (retval + sizeof(struct js_event) <= count &&
- joydev_generate_startup_event(client, input, &event)) {
-
- if (copy_to_user(buf + retval, &event, sizeof(struct js_event)))
- return -EFAULT;
-
- retval += sizeof(struct js_event);
- }
-
- while (retval + sizeof(struct js_event) <= count &&
- joydev_fetch_next_event(client, &event)) {
-
- if (copy_to_user(buf + retval, &event, sizeof(struct js_event)))
- return -EFAULT;
-
- retval += sizeof(struct js_event);
- }
-
- return retval;
-}
-
-/* No kernel lock - fine */
-static unsigned int joydev_poll(struct file *file, poll_table *wait)
-{
- struct joydev_client *client = file->private_data;
- struct joydev *joydev = client->joydev;
-
- poll_wait(file, &joydev->wait, wait);
- return (joydev_data_pending(client) ? (POLLIN | POLLRDNORM) : 0) |
- (joydev->exist ? 0 : (POLLHUP | POLLERR));
-}
-
-static int joydev_handle_JSIOCSAXMAP(struct joydev *joydev,
- void __user *argp, size_t len)
-{
- __u8 *abspam;
- int i;
- int retval = 0;
-
- len = min(len, sizeof(joydev->abspam));
-
- /* Validate the map. */
- abspam = kmalloc(len, GFP_KERNEL);
- if (!abspam)
- return -ENOMEM;
-
- if (copy_from_user(abspam, argp, len)) {
- retval = -EFAULT;
- goto out;
- }
-
- for (i = 0; i < joydev->nabs; i++) {
- if (abspam[i] > ABS_MAX) {
- retval = -EINVAL;
- goto out;
- }
- }
-
- memcpy(joydev->abspam, abspam, len);
-
- for (i = 0; i < joydev->nabs; i++)
- joydev->absmap[joydev->abspam[i]] = i;
-
- out:
- kfree(abspam);
- return retval;
-}
-
-static int joydev_handle_JSIOCSBTNMAP(struct joydev *joydev,
- void __user *argp, size_t len)
-{
- __u16 *keypam;
- int i;
- int retval = 0;
-
- len = min(len, sizeof(joydev->keypam));
-
- /* Validate the map. */
- keypam = kmalloc(len, GFP_KERNEL);
- if (!keypam)
- return -ENOMEM;
-
- if (copy_from_user(keypam, argp, len)) {
- retval = -EFAULT;
- goto out;
- }
-
- for (i = 0; i < joydev->nkey; i++) {
- if (keypam[i] > KEY_MAX || keypam[i] < BTN_MISC) {
- retval = -EINVAL;
- goto out;
- }
- }
-
- memcpy(joydev->keypam, keypam, len);
-
- for (i = 0; i < joydev->nkey; i++)
- joydev->keymap[keypam[i] - BTN_MISC] = i;
-
- out:
- kfree(keypam);
- return retval;
-}
-
-
-static int joydev_ioctl_common(struct joydev *joydev,
- unsigned int cmd, void __user *argp)
-{
- struct input_dev *dev = joydev->handle.dev;
- size_t len;
- int i;
- const char *name;
-
- /* Process fixed-sized commands. */
- switch (cmd) {
-
- case JS_SET_CAL:
- return copy_from_user(&joydev->glue.JS_CORR, argp,
- sizeof(joydev->glue.JS_CORR)) ? -EFAULT : 0;
-
- case JS_GET_CAL:
- return copy_to_user(argp, &joydev->glue.JS_CORR,
- sizeof(joydev->glue.JS_CORR)) ? -EFAULT : 0;
-
- case JS_SET_TIMEOUT:
- return get_user(joydev->glue.JS_TIMEOUT, (s32 __user *) argp);
-
- case JS_GET_TIMEOUT:
- return put_user(joydev->glue.JS_TIMEOUT, (s32 __user *) argp);
-
- case JSIOCGVERSION:
- return put_user(JS_VERSION, (__u32 __user *) argp);
-
- case JSIOCGAXES:
- return put_user(joydev->nabs, (__u8 __user *) argp);
-
- case JSIOCGBUTTONS:
- return put_user(joydev->nkey, (__u8 __user *) argp);
-
- case JSIOCSCORR:
- if (copy_from_user(joydev->corr, argp,
- sizeof(joydev->corr[0]) * joydev->nabs))
- return -EFAULT;
-
- for (i = 0; i < joydev->nabs; i++) {
- int val = input_abs_get_val(dev, joydev->abspam[i]);
- joydev->abs[i] = joydev_correct(val, &joydev->corr[i]);
- }
- return 0;
-
- case JSIOCGCORR:
- return copy_to_user(argp, joydev->corr,
- sizeof(joydev->corr[0]) * joydev->nabs) ? -EFAULT : 0;
-
- }
-
- /*
- * Process variable-sized commands (the axis and button map commands
- * are considered variable-sized to decouple them from the values of
- * ABS_MAX and KEY_MAX).
- */
- switch (cmd & ~IOCSIZE_MASK) {
-
- case (JSIOCSAXMAP & ~IOCSIZE_MASK):
- return joydev_handle_JSIOCSAXMAP(joydev, argp, _IOC_SIZE(cmd));
-
- case (JSIOCGAXMAP & ~IOCSIZE_MASK):
- len = min_t(size_t, _IOC_SIZE(cmd), sizeof(joydev->abspam));
- return copy_to_user(argp, joydev->abspam, len) ? -EFAULT : len;
-
- case (JSIOCSBTNMAP & ~IOCSIZE_MASK):
- return joydev_handle_JSIOCSBTNMAP(joydev, argp, _IOC_SIZE(cmd));
-
- case (JSIOCGBTNMAP & ~IOCSIZE_MASK):
- len = min_t(size_t, _IOC_SIZE(cmd), sizeof(joydev->keypam));
- return copy_to_user(argp, joydev->keypam, len) ? -EFAULT : len;
-
- case JSIOCGNAME(0):
- name = dev->name;
- if (!name)
- return 0;
-
- len = min_t(size_t, _IOC_SIZE(cmd), strlen(name) + 1);
- return copy_to_user(argp, name, len) ? -EFAULT : len;
- }
-
- return -EINVAL;
-}
-
-#ifdef CONFIG_COMPAT
-static long joydev_compat_ioctl(struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- struct joydev_client *client = file->private_data;
- struct joydev *joydev = client->joydev;
- void __user *argp = (void __user *)arg;
- s32 tmp32;
- struct JS_DATA_SAVE_TYPE_32 ds32;
- int retval;
-
- retval = mutex_lock_interruptible(&joydev->mutex);
- if (retval)
- return retval;
-
- if (!joydev->exist) {
- retval = -ENODEV;
- goto out;
- }
-
- switch (cmd) {
-
- case JS_SET_TIMELIMIT:
- retval = get_user(tmp32, (s32 __user *) arg);
- if (retval == 0)
- joydev->glue.JS_TIMELIMIT = tmp32;
- break;
-
- case JS_GET_TIMELIMIT:
- tmp32 = joydev->glue.JS_TIMELIMIT;
- retval = put_user(tmp32, (s32 __user *) arg);
- break;
-
- case JS_SET_ALL:
- retval = copy_from_user(&ds32, argp,
- sizeof(ds32)) ? -EFAULT : 0;
- if (retval == 0) {
- joydev->glue.JS_TIMEOUT = ds32.JS_TIMEOUT;
- joydev->glue.BUSY = ds32.BUSY;
- joydev->glue.JS_EXPIRETIME = ds32.JS_EXPIRETIME;
- joydev->glue.JS_TIMELIMIT = ds32.JS_TIMELIMIT;
- joydev->glue.JS_SAVE = ds32.JS_SAVE;
- joydev->glue.JS_CORR = ds32.JS_CORR;
- }
- break;
-
- case JS_GET_ALL:
- ds32.JS_TIMEOUT = joydev->glue.JS_TIMEOUT;
- ds32.BUSY = joydev->glue.BUSY;
- ds32.JS_EXPIRETIME = joydev->glue.JS_EXPIRETIME;
- ds32.JS_TIMELIMIT = joydev->glue.JS_TIMELIMIT;
- ds32.JS_SAVE = joydev->glue.JS_SAVE;
- ds32.JS_CORR = joydev->glue.JS_CORR;
-
- retval = copy_to_user(argp, &ds32, sizeof(ds32)) ? -EFAULT : 0;
- break;
-
- default:
- retval = joydev_ioctl_common(joydev, cmd, argp);
- break;
- }
-
- out:
- mutex_unlock(&joydev->mutex);
- return retval;
-}
-#endif /* CONFIG_COMPAT */
-
-static long joydev_ioctl(struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- struct joydev_client *client = file->private_data;
- struct joydev *joydev = client->joydev;
- void __user *argp = (void __user *)arg;
- int retval;
-
- retval = mutex_lock_interruptible(&joydev->mutex);
- if (retval)
- return retval;
-
- if (!joydev->exist) {
- retval = -ENODEV;
- goto out;
- }
-
- switch (cmd) {
-
- case JS_SET_TIMELIMIT:
- retval = get_user(joydev->glue.JS_TIMELIMIT,
- (long __user *) arg);
- break;
-
- case JS_GET_TIMELIMIT:
- retval = put_user(joydev->glue.JS_TIMELIMIT,
- (long __user *) arg);
- break;
-
- case JS_SET_ALL:
- retval = copy_from_user(&joydev->glue, argp,
- sizeof(joydev->glue)) ? -EFAULT: 0;
- break;
-
- case JS_GET_ALL:
- retval = copy_to_user(argp, &joydev->glue,
- sizeof(joydev->glue)) ? -EFAULT : 0;
- break;
-
- default:
- retval = joydev_ioctl_common(joydev, cmd, argp);
- break;
- }
- out:
- mutex_unlock(&joydev->mutex);
- return retval;
-}
-
-static const struct file_operations joydev_fops = {
- .owner = THIS_MODULE,
- .read = joydev_read,
- .poll = joydev_poll,
- .open = joydev_open,
- .release = joydev_release,
- .unlocked_ioctl = joydev_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = joydev_compat_ioctl,
-#endif
- .fasync = joydev_fasync,
- .llseek = no_llseek,
-};
-
-static int joydev_install_chrdev(struct joydev *joydev)
-{
- joydev_table[joydev->minor] = joydev;
- return 0;
-}
-
-static void joydev_remove_chrdev(struct joydev *joydev)
-{
- mutex_lock(&joydev_table_mutex);
- joydev_table[joydev->minor] = NULL;
- mutex_unlock(&joydev_table_mutex);
-}
-
-/*
- * Mark device non-existent. This disables writes, ioctls and
- * prevents new users from opening the device. Already posted
- * blocking reads will stay, however new ones will fail.
- */
-static void joydev_mark_dead(struct joydev *joydev)
-{
- mutex_lock(&joydev->mutex);
- joydev->exist = false;
- mutex_unlock(&joydev->mutex);
-}
-
-static void joydev_cleanup(struct joydev *joydev)
-{
- struct input_handle *handle = &joydev->handle;
-
- joydev_mark_dead(joydev);
- joydev_hangup(joydev);
- joydev_remove_chrdev(joydev);
-
- /* joydev is marked dead so no one else accesses joydev->open */
- if (joydev->open)
- input_close_device(handle);
-}
-
-
-static bool joydev_match(struct input_handler *handler, struct input_dev *dev)
-{
- /* Avoid touchpads and touchscreens */
- if (test_bit(EV_KEY, dev->evbit) && test_bit(BTN_TOUCH, dev->keybit))
- return false;
-
- /* Avoid tablets, digitisers and similar devices */
- if (test_bit(EV_KEY, dev->evbit) && test_bit(BTN_DIGI, dev->keybit))
- return false;
-
- return true;
-}
-
-static int joydev_connect(struct input_handler *handler, struct input_dev *dev,
- const struct input_device_id *id)
-{
- struct joydev *joydev;
- int i, j, t, minor;
- int error;
-
- for (minor = 0; minor < JOYDEV_MINORS; minor++)
- if (!joydev_table[minor])
- break;
-
- if (minor == JOYDEV_MINORS) {
- pr_err("no more free joydev devices\n");
- return -ENFILE;
- }
-
- joydev = kzalloc(sizeof(struct joydev), GFP_KERNEL);
- if (!joydev)
- return -ENOMEM;
-
- INIT_LIST_HEAD(&joydev->client_list);
- spin_lock_init(&joydev->client_lock);
- mutex_init(&joydev->mutex);
- init_waitqueue_head(&joydev->wait);
-
- dev_set_name(&joydev->dev, "js%d", minor);
- joydev->exist = true;
- joydev->minor = minor;
-
- joydev->handle.dev = input_get_device(dev);
- joydev->handle.name = dev_name(&joydev->dev);
- joydev->handle.handler = handler;
- joydev->handle.private = joydev;
-
- for (i = 0; i < ABS_CNT; i++)
- if (test_bit(i, dev->absbit)) {
- joydev->absmap[i] = joydev->nabs;
- joydev->abspam[joydev->nabs] = i;
- joydev->nabs++;
- }
-
- for (i = BTN_JOYSTICK - BTN_MISC; i < KEY_MAX - BTN_MISC + 1; i++)
- if (test_bit(i + BTN_MISC, dev->keybit)) {
- joydev->keymap[i] = joydev->nkey;
- joydev->keypam[joydev->nkey] = i + BTN_MISC;
- joydev->nkey++;
- }
-
- for (i = 0; i < BTN_JOYSTICK - BTN_MISC; i++)
- if (test_bit(i + BTN_MISC, dev->keybit)) {
- joydev->keymap[i] = joydev->nkey;
- joydev->keypam[joydev->nkey] = i + BTN_MISC;
- joydev->nkey++;
- }
-
- for (i = 0; i < joydev->nabs; i++) {
- j = joydev->abspam[i];
- if (input_abs_get_max(dev, j) == input_abs_get_min(dev, j)) {
- joydev->corr[i].type = JS_CORR_NONE;
- joydev->abs[i] = input_abs_get_val(dev, j);
- continue;
- }
- joydev->corr[i].type = JS_CORR_BROKEN;
- joydev->corr[i].prec = input_abs_get_fuzz(dev, j);
-
- t = (input_abs_get_max(dev, j) + input_abs_get_min(dev, j)) / 2;
- joydev->corr[i].coef[0] = t - input_abs_get_flat(dev, j);
- joydev->corr[i].coef[1] = t + input_abs_get_flat(dev, j);
-
- t = (input_abs_get_max(dev, j) - input_abs_get_min(dev, j)) / 2
- - 2 * input_abs_get_flat(dev, j);
- if (t) {
- joydev->corr[i].coef[2] = (1 << 29) / t;
- joydev->corr[i].coef[3] = (1 << 29) / t;
-
- joydev->abs[i] =
- joydev_correct(input_abs_get_val(dev, j),
- joydev->corr + i);
- }
- }
-
- joydev->dev.devt = MKDEV(INPUT_MAJOR, JOYDEV_MINOR_BASE + minor);
- joydev->dev.class = &input_class;
- joydev->dev.parent = &dev->dev;
- joydev->dev.release = joydev_free;
- device_initialize(&joydev->dev);
-
- error = input_register_handle(&joydev->handle);
- if (error)
- goto err_free_joydev;
-
- error = joydev_install_chrdev(joydev);
- if (error)
- goto err_unregister_handle;
-
- error = device_add(&joydev->dev);
- if (error)
- goto err_cleanup_joydev;
-
- return 0;
-
- err_cleanup_joydev:
- joydev_cleanup(joydev);
- err_unregister_handle:
- input_unregister_handle(&joydev->handle);
- err_free_joydev:
- put_device(&joydev->dev);
- return error;
-}
-
-static void joydev_disconnect(struct input_handle *handle)
-{
- struct joydev *joydev = handle->private;
-
- device_del(&joydev->dev);
- joydev_cleanup(joydev);
- input_unregister_handle(handle);
- put_device(&joydev->dev);
-}
-
-static const struct input_device_id joydev_ids[] = {
- {
- .flags = INPUT_DEVICE_ID_MATCH_EVBIT |
- INPUT_DEVICE_ID_MATCH_ABSBIT,
- .evbit = { BIT_MASK(EV_ABS) },
- .absbit = { BIT_MASK(ABS_X) },
- },
- {
- .flags = INPUT_DEVICE_ID_MATCH_EVBIT |
- INPUT_DEVICE_ID_MATCH_ABSBIT,
- .evbit = { BIT_MASK(EV_ABS) },
- .absbit = { BIT_MASK(ABS_WHEEL) },
- },
- {
- .flags = INPUT_DEVICE_ID_MATCH_EVBIT |
- INPUT_DEVICE_ID_MATCH_ABSBIT,
- .evbit = { BIT_MASK(EV_ABS) },
- .absbit = { BIT_MASK(ABS_THROTTLE) },
- },
- {
- .flags = INPUT_DEVICE_ID_MATCH_EVBIT |
- INPUT_DEVICE_ID_MATCH_KEYBIT,
- .evbit = { BIT_MASK(EV_KEY) },
- .keybit = {[BIT_WORD(BTN_JOYSTICK)] = BIT_MASK(BTN_JOYSTICK) },
- },
- {
- .flags = INPUT_DEVICE_ID_MATCH_EVBIT |
- INPUT_DEVICE_ID_MATCH_KEYBIT,
- .evbit = { BIT_MASK(EV_KEY) },
- .keybit = { [BIT_WORD(BTN_GAMEPAD)] = BIT_MASK(BTN_GAMEPAD) },
- },
- {
- .flags = INPUT_DEVICE_ID_MATCH_EVBIT |
- INPUT_DEVICE_ID_MATCH_KEYBIT,
- .evbit = { BIT_MASK(EV_KEY) },
- .keybit = { [BIT_WORD(BTN_TRIGGER_HAPPY)] = BIT_MASK(BTN_TRIGGER_HAPPY) },
- },
- { } /* Terminating entry */
-};
-
-MODULE_DEVICE_TABLE(input, joydev_ids);
-
-static struct input_handler joydev_handler = {
- .event = joydev_event,
- .match = joydev_match,
- .connect = joydev_connect,
- .disconnect = joydev_disconnect,
- .fops = &joydev_fops,
- .minor = JOYDEV_MINOR_BASE,
- .name = "joydev",
- .id_table = joydev_ids,
-};
-
-static int __init joydev_init(void)
-{
- return input_register_handler(&joydev_handler);
-}
-
-static void __exit joydev_exit(void)
-{
- input_unregister_handler(&joydev_handler);
-}
-
-module_init(joydev_init);
-module_exit(joydev_exit);