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path: root/drivers/input/evdev.c
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Diffstat (limited to 'drivers/input/evdev.c')
-rw-r--r--drivers/input/evdev.c52
1 files changed, 47 insertions, 5 deletions
diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c
index 7df5bfef2624..4b2e10d5d641 100644
--- a/drivers/input/evdev.c
+++ b/drivers/input/evdev.c
@@ -20,7 +20,7 @@
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/init.h>
-#include <linux/input.h>
+#include <linux/input/mt.h>
#include <linux/major.h>
#include <linux/device.h>
#include "input-compat.h"
@@ -46,6 +46,7 @@ struct evdev_client {
struct fasync_struct *fasync;
struct evdev *evdev;
struct list_head node;
+ int clkid;
unsigned int bufsize;
struct input_event buffer[];
};
@@ -54,8 +55,12 @@ static struct evdev *evdev_table[EVDEV_MINORS];
static DEFINE_MUTEX(evdev_table_mutex);
static void evdev_pass_event(struct evdev_client *client,
- struct input_event *event)
+ struct input_event *event,
+ ktime_t mono, ktime_t real)
{
+ event->time = ktime_to_timeval(client->clkid == CLOCK_MONOTONIC ?
+ mono : real);
+
/* Interrupts are disabled, just acquire the lock. */
spin_lock(&client->buffer_lock);
@@ -94,8 +99,11 @@ static void evdev_event(struct input_handle *handle,
struct evdev *evdev = handle->private;
struct evdev_client *client;
struct input_event event;
+ ktime_t time_mono, time_real;
+
+ time_mono = ktime_get();
+ time_real = ktime_sub(time_mono, ktime_get_monotonic_offset());
- do_gettimeofday(&event.time);
event.type = type;
event.code = code;
event.value = value;
@@ -103,11 +111,12 @@ static void evdev_event(struct input_handle *handle,
rcu_read_lock();
client = rcu_dereference(evdev->grab);
+
if (client)
- evdev_pass_event(client, &event);
+ evdev_pass_event(client, &event, time_mono, time_real);
else
list_for_each_entry_rcu(client, &evdev->client_list, node)
- evdev_pass_event(client, &event);
+ evdev_pass_event(client, &event, time_mono, time_real);
rcu_read_unlock();
@@ -623,6 +632,28 @@ static int evdev_handle_set_keycode_v2(struct input_dev *dev, void __user *p)
return input_set_keycode(dev, &ke);
}
+static int evdev_handle_mt_request(struct input_dev *dev,
+ unsigned int size,
+ int __user *ip)
+{
+ const struct input_mt_slot *mt = dev->mt;
+ unsigned int code;
+ int max_slots;
+ int i;
+
+ if (get_user(code, &ip[0]))
+ return -EFAULT;
+ if (!input_is_mt_value(code))
+ return -EINVAL;
+
+ max_slots = (size - sizeof(__u32)) / sizeof(__s32);
+ for (i = 0; i < dev->mtsize && i < max_slots; i++)
+ if (put_user(input_mt_get_value(&mt[i], code), &ip[1 + i]))
+ return -EFAULT;
+
+ return 0;
+}
+
static long evdev_do_ioctl(struct file *file, unsigned int cmd,
void __user *p, int compat_mode)
{
@@ -685,6 +716,14 @@ static long evdev_do_ioctl(struct file *file, unsigned int cmd,
else
return evdev_ungrab(evdev, client);
+ case EVIOCSCLOCKID:
+ if (copy_from_user(&i, p, sizeof(unsigned int)))
+ return -EFAULT;
+ if (i != CLOCK_MONOTONIC && i != CLOCK_REALTIME)
+ return -EINVAL;
+ client->clkid = i;
+ return 0;
+
case EVIOCGKEYCODE:
return evdev_handle_get_keycode(dev, p);
@@ -708,6 +747,9 @@ static long evdev_do_ioctl(struct file *file, unsigned int cmd,
return bits_to_user(dev->propbit, INPUT_PROP_MAX,
size, p, compat_mode);
+ case EVIOCGMTSLOTS(0):
+ return evdev_handle_mt_request(dev, size, ip);
+
case EVIOCGKEY(0):
return bits_to_user(dev->key, KEY_MAX, size, p, compat_mode);