mirror of
https://github.com/torvalds/linux.git
synced 2024-12-05 10:32:35 +00:00
Input: usbtouchscreen - allow reporting calibrated data
This patch adds a module parameter to report either the raw coordinate data or the hardware-calibrated coordinate data for MicroTouch/3M touchscreens. The default is set to the raw coordinates for backwards compatibilty. Signed-off-by: Dan Streetman <ddstreet@ieee.org> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
parent
9334e90d5a
commit
c9cbf3d3b3
@ -60,6 +60,10 @@ static int swap_xy;
|
||||
module_param(swap_xy, bool, 0644);
|
||||
MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped.");
|
||||
|
||||
static int hwcalib_xy;
|
||||
module_param(hwcalib_xy, bool, 0644);
|
||||
MODULE_PARM_DESC(hwcalib_xy, "If set hw-calibrated X/Y are used if available");
|
||||
|
||||
/* device specifc data/functions */
|
||||
struct usbtouch_usb;
|
||||
struct usbtouch_device_info {
|
||||
@ -260,8 +264,13 @@ static int panjit_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
|
||||
|
||||
static int mtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
|
||||
{
|
||||
dev->x = (pkt[8] << 8) | pkt[7];
|
||||
dev->y = (pkt[10] << 8) | pkt[9];
|
||||
if (hwcalib_xy) {
|
||||
dev->x = (pkt[4] << 8) | pkt[3];
|
||||
dev->y = 0xffff - ((pkt[6] << 8) | pkt[5]);
|
||||
} else {
|
||||
dev->x = (pkt[8] << 8) | pkt[7];
|
||||
dev->y = (pkt[10] << 8) | pkt[9];
|
||||
}
|
||||
dev->touch = (pkt[2] & 0x40) ? 1 : 0;
|
||||
|
||||
return 1;
|
||||
@ -294,6 +303,12 @@ static int mtouch_init(struct usbtouch_usb *usbtouch)
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* Default min/max xy are the raw values, override if using hw-calib */
|
||||
if (hwcalib_xy) {
|
||||
input_set_abs_params(usbtouch->input, ABS_X, 0, 0xffff, 0, 0);
|
||||
input_set_abs_params(usbtouch->input, ABS_Y, 0, 0xffff, 0, 0);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
Loading…
Reference in New Issue
Block a user