Input: fix locking in memoryless force-feedback devices

[safe/jmp/linux-2.6] / include / linux / input.h

diff --git a/include/linux/input.h b/include/linux/input.h
index 1249a0c..c2b1a7d 100644 (file)
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -53,6 +53,7 @@ struct input_absinfo {
        __s32 maximum;
        __s32 fuzz;
        __s32 flat;
+       __s32 resolution;
 };
 
 #define EVIOCGVERSION          _IOR('E', 0x01, int)                    /* get driver version */
@@ -106,6 +107,7 @@ struct input_absinfo {
 
 #define SYN_REPORT             0
 #define SYN_CONFIG             1
+#define SYN_MT_REPORT          2
 
 /*
  * Keys and buttons
@@ -445,6 +447,7 @@ struct input_absinfo {
 #define BTN_STYLUS2            0x14c
 #define BTN_TOOL_DOUBLETAP     0x14d
 #define BTN_TOOL_TRIPLETAP     0x14e
+#define BTN_TOOL_QUADTAP       0x14f   /* Four fingers on trackpad */
 
 #define BTN_WHEEL              0x150
 #define BTN_GEAR_DOWN          0x150
@@ -644,6 +647,18 @@ struct input_absinfo {
 #define ABS_TOOL_WIDTH         0x1c
 #define ABS_VOLUME             0x20
 #define ABS_MISC               0x28
+
+#define ABS_MT_TOUCH_MAJOR     0x30    /* Major axis of touching ellipse */
+#define ABS_MT_TOUCH_MINOR     0x31    /* Minor axis (omit if circular) */
+#define ABS_MT_WIDTH_MAJOR     0x32    /* Major axis of approaching ellipse */
+#define ABS_MT_WIDTH_MINOR     0x33    /* Minor axis (omit if circular) */
+#define ABS_MT_ORIENTATION     0x34    /* Ellipse orientation */
+#define ABS_MT_POSITION_X      0x35    /* Center X ellipse position */
+#define ABS_MT_POSITION_Y      0x36    /* Center Y ellipse position */
+#define ABS_MT_TOOL_TYPE       0x37    /* Type of touching device */
+#define ABS_MT_BLOB_ID         0x38    /* Group a set of packets as a blob */
+#define ABS_MT_TRACKING_ID     0x39    /* Unique ID of initiated contact */
+
 #define ABS_MAX                        0x3f
 #define ABS_CNT                        (ABS_MAX+1)
 
@@ -661,6 +676,7 @@ struct input_absinfo {
 #define SW_DOCK                        0x05  /* set = plugged into dock */
 #define SW_LINEOUT_INSERT      0x06  /* set = inserted */
 #define SW_JACK_PHYSICAL_INSERT 0x07  /* set = mechanical switch set */
+#define SW_VIDEOOUT_INSERT     0x08  /* set = inserted */
 #define SW_MAX                 0x0f
 #define SW_CNT                 (SW_MAX+1)
 
@@ -742,6 +758,12 @@ struct input_absinfo {
 #define BUS_ATARI              0x1B
 
 /*
+ * MT_TOOL types
+ */
+#define MT_TOOL_FINGER         0
+#define MT_TOOL_PEN            1
+
+/*
  * Values describing the status of a force-feedback effect
  */
 #define FF_STATUS_STOPPED      0x00
@@ -1088,6 +1110,7 @@ struct input_dev {
        int absmin[ABS_MAX + 1];
        int absfuzz[ABS_MAX + 1];
        int absflat[ABS_MAX + 1];
+       int absres[ABS_MAX + 1];
 
        int (*open)(struct input_dev *dev);
        void (*close)(struct input_dev *dev);
@@ -1100,7 +1123,7 @@ struct input_dev {
        struct mutex mutex;
 
        unsigned int users;
-       int going_away;
+       bool going_away;
 
        struct device dev;
 
@@ -1310,6 +1333,11 @@ static inline void input_sync(struct input_dev *dev)
        input_event(dev, EV_SYN, SYN_REPORT, 0);
 }
 
+static inline void input_mt_sync(struct input_dev *dev)
+{
+       input_event(dev, EV_SYN, SYN_MT_REPORT, 0);
+}
+
 void input_set_capability(struct input_dev *dev, unsigned int type, unsigned int code);
 
 static inline void input_set_abs_params(struct input_dev *dev, int axis, int min, int max, int fuzz, int flat)
@@ -1349,6 +1377,10 @@ extern struct class input_class;
  * methods; erase() is optional. set_gain() and set_autocenter() need
  * only be implemented if driver sets up FF_GAIN and FF_AUTOCENTER
  * bits.
+ *
+ * Note that playback(), set_gain() and set_autocenter() are called with
+ * dev->event_lock spinlock held and interrupts off and thus may not
+ * sleep.
  */
 struct ff_device {
        int (*upload)(struct input_dev *dev, struct ff_effect *effect,