[PATCH] USB touchkitusb: module_param to swap axes

add a module parameter to swap the axes. many displays need this...

Signed-off-by: Daniel Ritz <daniel.ritz@gmx.ch>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

diff --git a/drivers/usb/input/touchkitusb.c b/drivers/usb/input/touchkitusb.c
index 14443f926ab049f42ecfe6d7043063ddfe4f1e8f..65dd5be4eb999920027316ae3023bd52b511cbec 100644 (file)
--- a/drivers/usb/input/touchkitusb.c
+++ b/drivers/usb/input/touchkitusb.c
@@ -59,6 +59,10 @@
 #define DRIVER_AUTHOR                  "Daniel Ritz <daniel.ritz@gmx.ch>"
 #define DRIVER_DESC                    "eGalax TouchKit USB HID Touchscreen Driver"
 
+static int swap_xy;
+module_param(swap_xy, bool, 0644);
+MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped.");
+
 struct touchkit_usb {
        unsigned char *data;
        dma_addr_t data_dma;
@@ -80,6 +84,7 @@ static void touchkit_irq(struct urb *urb, struct pt_regs *regs)
 {
        struct touchkit_usb *touchkit = urb->context;
        int retval;
+       int x, y;
 
        switch (urb->status) {
        case 0:
@@ -103,13 +108,19 @@ static void touchkit_irq(struct urb *urb, struct pt_regs *regs)
                goto exit;
        }
 
+       if (swap_xy) {
+               y = TOUCHKIT_GET_X(touchkit->data);
+               x = TOUCHKIT_GET_Y(touchkit->data);
+       } else {
+               x = TOUCHKIT_GET_X(touchkit->data);
+               y = TOUCHKIT_GET_Y(touchkit->data);
+       }
+
        input_regs(&touchkit->input, regs);
        input_report_key(&touchkit->input, BTN_TOUCH,
                         TOUCHKIT_GET_TOUCHED(touchkit->data));
-       input_report_abs(&touchkit->input, ABS_X,
-                        TOUCHKIT_GET_X(touchkit->data));
-       input_report_abs(&touchkit->input, ABS_Y,
-                        TOUCHKIT_GET_Y(touchkit->data));
+       input_report_abs(&touchkit->input, ABS_X, x);
+       input_report_abs(&touchkit->input, ABS_Y, y);
        input_sync(&touchkit->input);
 
 exit: