summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--drivers/input/evdev.c27
-rw-r--r--drivers/input/input.c2
-rw-r--r--drivers/input/mouse/bcm5974.c1
-rw-r--r--include/linux/input.h25
-rw-r--r--include/linux/input/mt.h8
5 files changed, 59 insertions, 4 deletions
diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c
index 3626b1ce4609..cfe78597eb68 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"
@@ -632,6 +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)
{
@@ -725,6 +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);
diff --git a/drivers/input/input.c b/drivers/input/input.c
index 1f78c957a75a..8921c6180c51 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -180,7 +180,7 @@ static int input_handle_abs_event(struct input_dev *dev,
return INPUT_IGNORE_EVENT;
}
- is_mt_event = code >= ABS_MT_FIRST && code <= ABS_MT_LAST;
+ is_mt_event = input_is_mt_value(code);
if (!is_mt_event) {
pold = &dev->absinfo[code].value;
diff --git a/drivers/input/mouse/bcm5974.c b/drivers/input/mouse/bcm5974.c
index 927e479c2649..f9e2758b9f46 100644
--- a/drivers/input/mouse/bcm5974.c
+++ b/drivers/input/mouse/bcm5974.c
@@ -433,6 +433,7 @@ static void setup_events_to_report(struct input_dev *input_dev,
__set_bit(BTN_TOOL_QUADTAP, input_dev->keybit);
__set_bit(BTN_LEFT, input_dev->keybit);
+ __set_bit(INPUT_PROP_POINTER, input_dev->propbit);
if (cfg->caps & HAS_INTEGRATED_BUTTON)
__set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit);
diff --git a/include/linux/input.h b/include/linux/input.h
index 177261ea6f52..a81671453575 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -114,6 +114,31 @@ struct input_keymap_entry {
#define EVIOCGUNIQ(len) _IOC(_IOC_READ, 'E', 0x08, len) /* get unique identifier */
#define EVIOCGPROP(len) _IOC(_IOC_READ, 'E', 0x09, len) /* get device properties */
+/**
+ * EVIOCGMTSLOTS(len) - get MT slot values
+ *
+ * The ioctl buffer argument should be binary equivalent to
+ *
+ * struct input_mt_request_layout {
+ * __u32 code;
+ * __s32 values[num_slots];
+ * };
+ *
+ * where num_slots is the (arbitrary) number of MT slots to extract.
+ *
+ * The ioctl size argument (len) is the size of the buffer, which
+ * should satisfy len = (num_slots + 1) * sizeof(__s32). If len is
+ * too small to fit all available slots, the first num_slots are
+ * returned.
+ *
+ * Before the call, code is set to the wanted ABS_MT event type. On
+ * return, values[] is filled with the slot values for the specified
+ * ABS_MT code.
+ *
+ * If the request code is not an ABS_MT value, -EINVAL is returned.
+ */
+#define EVIOCGMTSLOTS(len) _IOC(_IOC_READ, 'E', 0x0a, len)
+
#define EVIOCGKEY(len) _IOC(_IOC_READ, 'E', 0x18, len) /* get global key state */
#define EVIOCGLED(len) _IOC(_IOC_READ, 'E', 0x19, len) /* get all LEDs */
#define EVIOCGSND(len) _IOC(_IOC_READ, 'E', 0x1a, len) /* get all sounds status */
diff --git a/include/linux/input/mt.h b/include/linux/input/mt.h
index 318bb82325a6..f86737586e19 100644
--- a/include/linux/input/mt.h
+++ b/include/linux/input/mt.h
@@ -48,10 +48,14 @@ static inline void input_mt_slot(struct input_dev *dev, int slot)
input_event(dev, EV_ABS, ABS_MT_SLOT, slot);
}
+static inline bool input_is_mt_value(int axis)
+{
+ return axis >= ABS_MT_FIRST && axis <= ABS_MT_LAST;
+}
+
static inline bool input_is_mt_axis(int axis)
{
- return axis == ABS_MT_SLOT ||
- (axis >= ABS_MT_FIRST && axis <= ABS_MT_LAST);
+ return axis == ABS_MT_SLOT || input_is_mt_value(axis);
}
void input_mt_report_slot_state(struct input_dev *dev,