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Diffstat (limited to 'drivers/input/misc/uinput.c')
-rw-r--r--drivers/input/misc/uinput.c40
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)
{