Input: Break out MT data

Move all MT-related things to a separate place. This saves some
bytes for non-mt input devices, and prepares for new MT features.

Reviewed-and-tested-by: Benjamin Tissoires <benjamin.tissoires@enac.fr>
Tested-by: Ping Cheng <pingc@wacom.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>

1 files changed, 10 insertions, 10 deletions

diff --git a/drivers/input/input.c b/drivers/input/input.c
index 8921c6180c51..79a4a2ad74de 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -166,6 +166,7 @@ static void input_stop_autorepeat(struct input_dev *dev)
 static int input_handle_abs_event(struct input_dev *dev,
                                   unsigned int code, int *pval)
 {
+        struct input_mt *mt = dev->mt;
         bool is_mt_event;
         int *pold;
 
@@ -174,8 +175,8 @@ static int input_handle_abs_event(struct input_dev *dev,
                  * "Stage" the event; we'll flush it later, when we
                  * get actual touch data.
                  */
-                if (*pval >= 0 && *pval < dev->mtsize)
-                        dev->slot = *pval;
+                if (mt && *pval >= 0 && *pval < mt->num_slots)
+                        mt->slot = *pval;
 
                 return INPUT_IGNORE_EVENT;
         }
@@ -184,9 +185,8 @@ static int input_handle_abs_event(struct input_dev *dev,
 
         if (!is_mt_event) {
                 pold = &dev->absinfo[code].value;
-        } else if (dev->mt) {
-                struct input_mt_slot *mtslot = &dev->mt[dev->slot];
-                pold = &mtslot->abs[code - ABS_MT_FIRST];
+        } else if (mt) {
+                pold = &mt->slots[mt->slot].abs[code - ABS_MT_FIRST];
         } else {
                 /*
                  * Bypass filtering for multi-touch events when
@@ -205,9 +205,9 @@ static int input_handle_abs_event(struct input_dev *dev,
         }
 
         /* Flush pending "slot" event */
-        if (is_mt_event && dev->slot != input_abs_get_val(dev, ABS_MT_SLOT)) {
-                input_abs_set_val(dev, ABS_MT_SLOT, dev->slot);
-                input_pass_event(dev, EV_ABS, ABS_MT_SLOT, dev->slot);
+        if (is_mt_event && mt && mt->slot != input_abs_get_val(dev, ABS_MT_SLOT)) {
+                input_abs_set_val(dev, ABS_MT_SLOT, mt->slot);
+                input_pass_event(dev, EV_ABS, ABS_MT_SLOT, mt->slot);
         }
 
         return INPUT_PASS_TO_HANDLERS;
@@ -1751,8 +1751,8 @@ static unsigned int input_estimate_events_per_packet(struct input_dev *dev)
         int i;
         unsigned int events;
 
-        if (dev->mtsize) {
-                mt_slots = dev->mtsize;
+        if (dev->mt) {
+                mt_slots = dev->mt->num_slots;
         } else if (test_bit(ABS_MT_TRACKING_ID, dev->absbit)) {
                 mt_slots = dev->absinfo[ABS_MT_TRACKING_ID].maximum -
                            dev->absinfo[ABS_MT_TRACKING_ID].minimum + 1,