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relative wheel implementation

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ond 2011-03-10 20:44:42 +01:00
parent 535ea39e39
commit 74aefabc9d
1 changed files with 5 additions and 15 deletions
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20
hanvon.c
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@ -20,7 +20,6 @@ MODULE_LICENSE(DRIVER_LICENSE);
#define B1 BTN_TOOL_FINGER
#define B2 BTN_TOOL_PENCIL
#define B3 BTN_TOOL_AIRBRUSH
#define TOTAL_WHEEL_ABS 0x40
#define WHEEL_THRESHOLD 10
struct hanvon {
@ -34,7 +33,7 @@ struct hanvon {
unsigned b1:1;
unsigned b2:1;
unsigned b3:1;
int wheel_pos, old_wheel_pos;
int old_wheel_pos;
int pressure;
char phys[32];
};
@ -73,17 +72,9 @@ static void hanvon_irq(struct urb *urb)
input_report_key(dev, B3, hanvon->b3);
} else {
if(data[2] <= 0x3f) { // slider area active
int diff = hanvon->old_wheel_pos - data[2];
if(abs(diff) < WHEEL_THRESHOLD) {
hanvon->wheel_pos += diff;
if(hanvon->wheel_pos < -TOTAL_WHEEL_ABS)
hanvon->wheel_pos += TOTAL_WHEEL_ABS;
else if(hanvon->wheel_pos > TOTAL_WHEEL_ABS)
hanvon->wheel_pos -= TOTAL_WHEEL_ABS;
input_report_key(dev, ABS_WHEEL, hanvon->wheel_pos);
}
int diff = data[2] - hanvon->old_wheel_pos;
if(abs(diff) < WHEEL_THRESHOLD)
input_report_key(dev, REL_WHEEL, diff);
hanvon->old_wheel_pos = data[2];
}
@ -134,7 +125,7 @@ static int hanvon_open(struct input_dev *dev)
{
struct hanvon *hanvon = input_get_drvdata(dev);
hanvon->old_wheel_pos = -TOTAL_WHEEL_ABS-1;
hanvon->old_wheel_pos = -WHEEL_THRESHOLD-1;
hanvon->irq->dev = hanvon->usbdev;
if (usb_submit_urb(hanvon->irq, GFP_KERNEL))
return -EIO;
@ -197,7 +188,6 @@ static int hanvon_probe(struct usb_interface *intf, const struct usb_device_id *
input_set_abs_params(input_dev, ABS_X, 0, 0x27de, 4, 0);
input_set_abs_params(input_dev, ABS_Y, 0, 0x1cfe, 4, 0);
input_set_abs_params(input_dev, ABS_PRESSURE, 0, 0xffffffff, 4, 0);
input_set_abs_params(input_dev, ABS_WHEEL, 0, TOTAL_WHEEL_ABS, 4, 0);
endpoint = &intf->cur_altsetting->endpoint[0].desc;