]> git.openfabrics.org - ~shefty/rdma-dev.git/blobdiff - drivers/hid/hid-3m-pct.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
[~shefty/rdma-dev.git] / drivers / hid / hid-3m-pct.c
index 4546c123eb777e106194dc0023205e9c60ccfc3d..5243ae2d37300eeec72447b3754d95c944ab0c1f 100644 (file)
@@ -19,6 +19,7 @@
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/usb.h>
+#include <linux/input/mt.h>
 
 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
 MODULE_DESCRIPTION("3M PCT multitouch panels");
@@ -27,8 +28,6 @@ MODULE_LICENSE("GPL");
 #include "hid-ids.h"
 
 #define MAX_SLOTS              60
-#define MAX_TRKID              USHRT_MAX
-#define MAX_EVENTS             360
 
 /* estimated signal-to-noise ratios */
 #define SN_MOVE                        2048
@@ -36,14 +35,11 @@ MODULE_LICENSE("GPL");
 
 struct mmm_finger {
        __s32 x, y, w, h;
-       __u16 id;
-       bool prev_touch;
        bool touch, valid;
 };
 
 struct mmm_data {
        struct mmm_finger f[MAX_SLOTS];
-       __u16 id;
        __u8 curid;
        __u8 nexp, nreal;
        bool touch, valid;
@@ -117,14 +113,7 @@ static int mmm_input_mapping(struct hid_device *hdev, struct hid_input *hi,
                                        0, 1, 0, 0);
                        return 1;
                case HID_DG_CONTACTID:
-                       field->logical_maximum = MAX_TRKID;
-                       hid_map_usage(hi, usage, bit, max,
-                                       EV_ABS, ABS_MT_TRACKING_ID);
-                       input_set_abs_params(hi->input, ABS_MT_TRACKING_ID,
-                                            0, MAX_TRKID, 0, 0);
-                       if (!hi->input->mt)
-                               input_mt_create_slots(hi->input, MAX_SLOTS);
-                       input_set_events_per_packet(hi->input, MAX_EVENTS);
+                       input_mt_init_slots(hi->input, MAX_SLOTS);
                        return 1;
                }
                /* let hid-input decide for the others */
@@ -154,7 +143,6 @@ static int mmm_input_mapped(struct hid_device *hdev, struct hid_input *hi,
  */
 static void mmm_filter_event(struct mmm_data *md, struct input_dev *input)
 {
-       struct mmm_finger *oldest = 0;
        int i;
        for (i = 0; i < MAX_SLOTS; ++i) {
                struct mmm_finger *f = &md->f[i];
@@ -163,6 +151,7 @@ static void mmm_filter_event(struct mmm_data *md, struct input_dev *input)
                        continue;
                }
                input_mt_slot(input, i);
+               input_mt_report_slot_state(input, MT_TOOL_FINGER, f->touch);
                if (f->touch) {
                        /* this finger is on the screen */
                        int wide = (f->w > f->h);
@@ -170,33 +159,16 @@ static void mmm_filter_event(struct mmm_data *md, struct input_dev *input)
                        int major = max(f->w, f->h) >> 1;
                        int minor = min(f->w, f->h) >> 1;
 
-                       if (!f->prev_touch)
-                               f->id = md->id++;
-                       input_event(input, EV_ABS, ABS_MT_TRACKING_ID, f->id);
                        input_event(input, EV_ABS, ABS_MT_POSITION_X, f->x);
                        input_event(input, EV_ABS, ABS_MT_POSITION_Y, f->y);
                        input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
                        input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
                        input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
-                       /* touchscreen emulation: pick the oldest contact */
-                       if (!oldest || ((f->id - oldest->id) & (SHRT_MAX + 1)))
-                               oldest = f;
-               } else {
-                       /* this finger took off the screen */
-                       input_event(input, EV_ABS, ABS_MT_TRACKING_ID, -1);
                }
-               f->prev_touch = f->touch;
                f->valid = 0;
        }
 
-       /* touchscreen emulation */
-       if (oldest) {
-               input_event(input, EV_KEY, BTN_TOUCH, 1);
-               input_event(input, EV_ABS, ABS_X, oldest->x);
-               input_event(input, EV_ABS, ABS_Y, oldest->y);
-       } else {
-               input_event(input, EV_KEY, BTN_TOUCH, 0);
-       }
+       input_mt_report_pointer_emulation(input, true);
        input_sync(input);
 }