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path: root/drivers/hid/hid-3m-pct.c
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Diffstat (limited to 'drivers/hid/hid-3m-pct.c')
-rw-r--r--drivers/hid/hid-3m-pct.c38
1 files changed, 5 insertions, 33 deletions
diff --git a/drivers/hid/hid-3m-pct.c b/drivers/hid/hid-3m-pct.c
index 02d8cd3b1b1b..5243ae2d3730 100644
--- a/drivers/hid/hid-3m-pct.c
+++ b/drivers/hid/hid-3m-pct.c
@@ -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);
}
@@ -274,7 +246,7 @@ static int mmm_probe(struct hid_device *hdev, const struct hid_device_id *id)
md = kzalloc(sizeof(struct mmm_data), GFP_KERNEL);
if (!md) {
- dev_err(&hdev->dev, "cannot allocate 3M data\n");
+ hid_err(hdev, "cannot allocate 3M data\n");
return -ENOMEM;
}
hid_set_drvdata(hdev, md);