fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / drivers / input / misc / uinput.c

diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c
index 546ed9b..9516439 100644 (file)
--- a/drivers/input/misc/uinput.c
+++ b/drivers/input/misc/uinput.c
@@ -20,6 +20,9 @@
  * Author: Aristeu Sergio Rozanski Filho <aris@cathedrallabs.org>
  *
  * Changes/Revisions:
+ *     0.3     09/04/2006 (Anssi Hannula <anssi.hannula@gmail.com>)
+ *             - updated ff support for the changes in kernel interface
+ *             - added MODULE_VERSION
  *     0.2     16/10/2004 (Micah Dowty <micah@navi.cx>)
  *             - added force feedback support
  *              - added UI_SET_PHYS
@@ -107,18 +110,31 @@ static int uinput_request_submit(struct input_dev *dev, struct uinput_request *r
        return request->retval;
 }
 
-static int uinput_dev_upload_effect(struct input_dev *dev, struct ff_effect *effect)
+static void uinput_dev_set_gain(struct input_dev *dev, u16 gain)
+{
+       uinput_dev_event(dev, EV_FF, FF_GAIN, gain);
+}
+
+static void uinput_dev_set_autocenter(struct input_dev *dev, u16 magnitude)
+{
+       uinput_dev_event(dev, EV_FF, FF_AUTOCENTER, magnitude);
+}
+
+static int uinput_dev_playback(struct input_dev *dev, int effect_id, int value)
+{
+       return uinput_dev_event(dev, EV_FF, effect_id, value);
+}
+
+static int uinput_dev_upload_effect(struct input_dev *dev, struct ff_effect *effect, struct ff_effect *old)
 {
        struct uinput_request request;
        int retval;
 
-       if (!test_bit(EV_FF, dev->evbit))
-               return -ENOSYS;
-
        request.id = -1;
        init_completion(&request.done);
        request.code = UI_FF_UPLOAD;
-       request.u.effect = effect;
+       request.u.upload.effect = effect;
+       request.u.upload.old = old;
 
        retval = uinput_request_reserve_slot(dev->private, &request);
        if (!retval)
@@ -168,6 +184,7 @@ static void uinput_destroy_device(struct uinput_device *udev)
 
 static int uinput_create_device(struct uinput_device *udev)
 {
+       struct input_dev *dev = udev->dev;
        int error;
 
        if (udev->state != UIST_SETUP_COMPLETE) {
@@ -175,15 +192,29 @@ static int uinput_create_device(struct uinput_device *udev)
                return -EINVAL;
        }
 
-       error = input_register_device(udev->dev);
-       if (error) {
-               uinput_destroy_device(udev);
-               return error;
+       if (udev->ff_effects_max) {
+               error = input_ff_create(dev, udev->ff_effects_max);
+               if (error)
+                       goto fail1;
+
+               dev->ff->upload = uinput_dev_upload_effect;
+               dev->ff->erase = uinput_dev_erase_effect;
+               dev->ff->playback = uinput_dev_playback;
+               dev->ff->set_gain = uinput_dev_set_gain;
+               dev->ff->set_autocenter = uinput_dev_set_autocenter;
        }
 
+       error = input_register_device(udev->dev);
+       if (error)
+               goto fail2;
+
        udev->state = UIST_CREATED;
 
        return 0;
+
+ fail2:        input_ff_destroy(dev);
+ fail1: uinput_destroy_device(udev);
+       return error;
 }
 
 static int uinput_open(struct inode *inode, struct file *file)
@@ -194,7 +225,7 @@ static int uinput_open(struct inode *inode, struct file *file)
        if (!newdev)
                return -ENOMEM;
 
-       init_MUTEX(&newdev->sem);
+       mutex_init(&newdev->mutex);
        spin_lock_init(&newdev->requests_lock);
        init_waitqueue_head(&newdev->requests_waitq);
        init_waitqueue_head(&newdev->waitq);
@@ -243,8 +274,6 @@ static int uinput_allocate_device(struct uinput_device *udev)
                return -ENOMEM;
 
        udev->dev->event = uinput_dev_event;
-       udev->dev->upload_effect = uinput_dev_upload_effect;
-       udev->dev->erase_effect = uinput_dev_erase_effect;
        udev->dev->private = udev;
 
        return 0;
@@ -278,6 +307,8 @@ static int uinput_setup_device(struct uinput_device *udev, const char __user *bu
                goto exit;
        }
 
+       udev->ff_effects_max = user_dev->ff_effects_max;
+
        size = strnlen(user_dev->name, UINPUT_MAX_NAME_SIZE) + 1;
        if (!size) {
                retval = -EINVAL;
@@ -296,7 +327,6 @@ static int uinput_setup_device(struct uinput_device *udev, const char __user *bu
        dev->id.vendor  = user_dev->id.vendor;
        dev->id.product = user_dev->id.product;
        dev->id.version = user_dev->id.version;
-       dev->ff_effects_max = user_dev->ff_effects_max;
 
        size = sizeof(int) * (ABS_MAX + 1);
        memcpy(dev->absmax, user_dev->absmax, size);
@@ -340,7 +370,7 @@ static ssize_t uinput_write(struct file *file, const char __user *buffer, size_t
        struct uinput_device *udev = file->private_data;
        int retval;
 
-       retval = down_interruptible(&udev->sem);
+       retval = mutex_lock_interruptible(&udev->mutex);
        if (retval)
                return retval;
 
@@ -348,7 +378,7 @@ static ssize_t uinput_write(struct file *file, const char __user *buffer, size_t
                        uinput_inject_event(udev, buffer, count) :
                        uinput_setup_device(udev, buffer, count);
 
-       up(&udev->sem);
+       mutex_unlock(&udev->mutex);
 
        return retval;
 }
@@ -369,7 +399,7 @@ static ssize_t uinput_read(struct file *file, char __user *buffer, size_t count,
        if (retval)
                return retval;
 
-       retval = down_interruptible(&udev->sem);
+       retval = mutex_lock_interruptible(&udev->mutex);
        if (retval)
                return retval;
 
@@ -388,7 +418,7 @@ static ssize_t uinput_read(struct file *file, char __user *buffer, size_t count,
        }
 
  out:
-       up(&udev->sem);
+       mutex_unlock(&udev->mutex);
 
        return retval;
 }
@@ -439,7 +469,7 @@ static long uinput_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 
        udev = file->private_data;
 
-       retval = down_interruptible(&udev->sem);
+       retval = mutex_lock_interruptible(&udev->mutex);
        if (retval)
                return retval;
 
@@ -525,12 +555,17 @@ static long uinput_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
                                break;
                        }
                        req = uinput_request_find(udev, ff_up.request_id);
-                       if (!(req && req->code == UI_FF_UPLOAD && req->u.effect)) {
+                       if (!(req && req->code == UI_FF_UPLOAD && req->u.upload.effect)) {
                                retval = -EINVAL;
                                break;
                        }
                        ff_up.retval = 0;
-                       memcpy(&ff_up.effect, req->u.effect, sizeof(struct ff_effect));
+                       memcpy(&ff_up.effect, req->u.upload.effect, sizeof(struct ff_effect));
+                       if (req->u.upload.old)
+                               memcpy(&ff_up.old, req->u.upload.old, sizeof(struct ff_effect));
+                       else
+                               memset(&ff_up.old, 0, sizeof(struct ff_effect));
+
                        if (copy_to_user(p, &ff_up, sizeof(ff_up))) {
                                retval = -EFAULT;
                                break;
@@ -561,12 +596,11 @@ static long uinput_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
                                break;
                        }
                        req = uinput_request_find(udev, ff_up.request_id);
-                       if (!(req && req->code == UI_FF_UPLOAD && req->u.effect)) {
+                       if (!(req && req->code == UI_FF_UPLOAD && req->u.upload.effect)) {
                                retval = -EINVAL;
                                break;
                        }
                        req->retval = ff_up.retval;
-                       memcpy(req->u.effect, &ff_up.effect, sizeof(struct ff_effect));
                        uinput_request_done(udev, req);
                        break;
 
@@ -589,7 +623,7 @@ static long uinput_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
        }
 
  out:
-       up(&udev->sem);
+       mutex_unlock(&udev->mutex);
        return retval;
 }
 
@@ -622,6 +656,7 @@ static void __exit uinput_exit(void)
 MODULE_AUTHOR("Aristeu Sergio Rozanski Filho");
 MODULE_DESCRIPTION("User level driver support for input subsystem");
 MODULE_LICENSE("GPL");
+MODULE_VERSION("0.3");
 
 module_init(uinput_init);
 module_exit(uinput_exit);