@@ -632,6 +632,12 @@ static long evdev_do_ioctl(struct file *file, unsigned int cmd,
return -EFAULT;
return 0;
+ case EVIOCGDEVINFO:
+ if (copy_to_user(p, &dev->devinfo,
+ sizeof(struct input_devinfo)))
+ return -EFAULT;
+ return 0;
+
case EVIOCGREP:
if (!test_bit(EV_REP, dev->evbit))
return -ENOSYS;
@@ -57,6 +57,21 @@ struct input_absinfo {
};
/**
+ * struct input_devinfo - device information via EVIOCGDEVINFO ioctl
+ * @types: bitmask of types (DEVTYPE_*) matching this device
+ * @capabilities: bitmask of capabilities (DEVCAPS_*) of this device
+ *
+ * This struct provides information about the device needed for
+ * automatic setup in userspace, such as if the device is direct
+ * (touchscreen) or indirect (touchpad), and if there are other
+ * special considerations, such as the touchpad also being a button.
+ */
+struct input_devinfo {
+ __u32 types;
+ __u32 capabilities;
+};
+
+/**
* struct input_keymap_entry - used by EVIOCGKEYCODE/EVIOCSKEYCODE ioctls
* @scancode: scancode represented in machine-endian form.
* @len: length of the scancode that resides in @scancode buffer.
@@ -91,6 +106,7 @@ struct input_keymap_entry {
#define EVIOCGNAME(len) _IOC(_IOC_READ, 'E', 0x06, len) /* get device name */
#define EVIOCGPHYS(len) _IOC(_IOC_READ, 'E', 0x07, len) /* get physical location */
#define EVIOCGUNIQ(len) _IOC(_IOC_READ, 'E', 0x08, len) /* get unique identifier */
+#define EVIOCGDEVINFO _IOR('E', 0x09, struct input_devinfo) /* get device information */
#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 */
@@ -108,6 +124,23 @@ struct input_keymap_entry {
#define EVIOCGRAB _IOW('E', 0x90, int) /* Grab/Release device */
/*
+ * Device types
+ */
+
+#define DEVTYPE_KEYBOARD 0
+#define DEVTYPE_MOUSE 1
+#define DEVTYPE_JOYSTICK 2
+#define DEVTYPE_TOUCHPAD 3
+#define DEVTYPE_TABLET 4
+#define DEVTYPE_TOUCHSCREEN 5
+
+/*
+ * Device capabilities
+ */
+
+#define DEVCAPS_PAD_IS_BUTTON 1
+
+/*
* Event types
*/
@@ -1177,6 +1210,7 @@ struct input_dev {
const char *phys;
const char *uniq;
struct input_id id;
+ struct input_devinfo devinfo;
unsigned long evbit[BITS_TO_LONGS(EV_CNT)];
unsigned long keybit[BITS_TO_LONGS(KEY_CNT)];