diff options
Diffstat (limited to 'drivers/input/misc/uinput.c')
| -rw-r--r-- | drivers/input/misc/uinput.c | 40 |
1 files changed, 39 insertions, 1 deletions
diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c index 06f3ac67dde1..7b41aad7ec27 100644 --- a/drivers/input/misc/uinput.c +++ b/drivers/input/misc/uinput.c @@ -31,6 +31,7 @@ * 0.1 20/06/2002 * - first public version */ +#include <uapi/linux/uinput.h> #include <linux/poll.h> #include <linux/sched.h> #include <linux/slab.h> @@ -38,10 +39,47 @@ #include <linux/init.h> #include <linux/fs.h> #include <linux/miscdevice.h> -#include <linux/uinput.h> #include <linux/input/mt.h> #include "../input-compat.h" +#define UINPUT_NAME "uinput" +#define UINPUT_BUFFER_SIZE 16 +#define UINPUT_NUM_REQUESTS 16 + +enum uinput_state { UIST_NEW_DEVICE, UIST_SETUP_COMPLETE, UIST_CREATED }; + +struct uinput_request { + unsigned int id; + unsigned int code; /* UI_FF_UPLOAD, UI_FF_ERASE */ + + int retval; + struct completion done; + + union { + unsigned int effect_id; + struct { + struct ff_effect *effect; + struct ff_effect *old; + } upload; + } u; +}; + +struct uinput_device { + struct input_dev *dev; + struct mutex mutex; + enum uinput_state state; + wait_queue_head_t waitq; + unsigned char ready; + unsigned char head; + unsigned char tail; + struct input_event buff[UINPUT_BUFFER_SIZE]; + unsigned int ff_effects_max; + + struct uinput_request *requests[UINPUT_NUM_REQUESTS]; + wait_queue_head_t requests_waitq; + spinlock_t requests_lock; +}; + static int uinput_dev_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) { |