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authorAnssi Hannula <anssi.hannula@gmail.com>2006-07-19 01:40:22 -0400
committerDmitry Torokhov <dtor@insightbb.com>2006-07-19 01:40:22 -0400
commit509ca1a9383601fdc5612d3d3ba5b981f6eb6c8b (patch)
tree4d7b63c2b108510c11a89dc0ea45efe788fed779 /drivers/input/evdev.c
parent806d41b756fecc1b13584e2b806b76d8934b1679 (diff)
Input: implement new force feedback interface
Implement a new force feedback interface, in which all non-driver-specific operations are separated to a common module. This includes handling effect type validations, locking, etc. The effects are now file descriptor specific instead of the previous strange half-process half-fd specific behaviour. The effect memory of devices is not emptied if the root user opens and closes the device while another user is using effects. This is a minor change and most likely no force feedback aware programs are affected by this negatively. Otherwise the userspace interface is left unaltered. Signed-off-by: Anssi Hannula <anssi.hannula@gmail.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input/evdev.c')
-rw-r--r--drivers/input/evdev.c32
1 files changed, 15 insertions, 17 deletions
diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c
index 4bf48188cc9..12c7ab876c3 100644
--- a/drivers/input/evdev.c
+++ b/drivers/input/evdev.c
@@ -391,8 +391,10 @@ static long evdev_ioctl_handler(struct file *file, unsigned int cmd,
struct evdev *evdev = list->evdev;
struct input_dev *dev = evdev->handle.dev;
struct input_absinfo abs;
+ struct ff_effect effect;
int __user *ip = (int __user *)p;
int i, t, u, v;
+ int error;
if (!evdev->exist)
return -ENODEV;
@@ -460,27 +462,22 @@ static long evdev_ioctl_handler(struct file *file, unsigned int cmd,
return 0;
case EVIOCSFF:
- if (dev->upload_effect) {
- struct ff_effect effect;
- int err;
-
- if (copy_from_user(&effect, p, sizeof(effect)))
- return -EFAULT;
- err = dev->upload_effect(dev, &effect);
- if (put_user(effect.id, &(((struct ff_effect __user *)p)->id)))
- return -EFAULT;
- return err;
- } else
- return -ENOSYS;
+ if (copy_from_user(&effect, p, sizeof(effect)))
+ return -EFAULT;
- case EVIOCRMFF:
- if (!dev->erase_effect)
- return -ENOSYS;
+ error = input_ff_upload(dev, &effect, file);
- return dev->erase_effect(dev, (int)(unsigned long) p);
+ if (put_user(effect.id, &(((struct ff_effect __user *)p)->id)))
+ return -EFAULT;
+
+ return error;
+
+ case EVIOCRMFF:
+ return input_ff_erase(dev, (int)(unsigned long) p, file);
case EVIOCGEFFECTS:
- if (put_user(dev->ff_effects_max, ip))
+ i = test_bit(EV_FF, dev->evbit) ? dev->ff->max_effects : 0;
+ if (put_user(i, ip))
return -EFAULT;
return 0;
@@ -669,6 +666,7 @@ static void evdev_disconnect(struct input_handle *handle)
evdev->exist = 0;
if (evdev->open) {
+ input_flush_device(handle, NULL);
input_close_device(handle);
wake_up_interruptible(&evdev->wait);
list_for_each_entry(list, &evdev->list, node)