From 77dc2db6d1d2703ee4e83d4b3dbecf4e06a910e6 Mon Sep 17 00:00:00 2001 From: Mark Assad Date: Thu, 5 Oct 2006 12:25:05 +1000 Subject: [PATCH] [PATCH] itmtouch: fix inverted flag to indicate touch location correctly, correct white space There is a bug in the current version of the itmtouch USB touchscreen driver. The if statment that checks if pressure is being applied to the touch screen is now missing a ! (not), so events are no longer being reported correctly. The original source code for this line was as follows: #define UCP(x) ((unsigned char*)(x)) #define UCOM(x,y,z) ((UCP((x)->transfer_buffer)[y]) & (z)) ... if (!UCOM(urb, 7, 0x20)) { And was cleaned to: unsigned char *data = urb->transfer_buffer; .... if (data[7] & 0x20) { (note the lack of '!') This has been tested on an LG L1510BF and an LG1510SF touch screen. Signed-off-by: Mark Assad Signed-off-by: Linus Torvalds --- drivers/usb/input/itmtouch.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/usb/input/itmtouch.c b/drivers/usb/input/itmtouch.c index 61966d719ca3..f3e3080de5b5 100644 --- a/drivers/usb/input/itmtouch.c +++ b/drivers/usb/input/itmtouch.c @@ -36,7 +36,11 @@ * * 1.2.1 09/03/2005 (HCE) hc@mivu.no * Code cleanup and adjusting syntax to start matching kernel standards - * + * + * 1.2.2 10/05/2006 (MJA) massad@gmail.com + * Flag for detecting if the screen was being touch was incorrectly + * inverted, so no touch events were being detected. + * *****************************************************************************/ #include @@ -53,7 +57,7 @@ #define USB_PRODUCT_ID_TOUCHPANEL 0xf9e9 #define DRIVER_AUTHOR "Hans-Christian Egtvedt " -#define DRIVER_VERSION "v1.2.1" +#define DRIVER_VERSION "v1.2.2" #define DRIVER_DESC "USB ITM Inc Touch Panel Driver" #define DRIVER_LICENSE "GPL" @@ -108,7 +112,7 @@ static void itmtouch_irq(struct urb *urb, struct pt_regs *regs) input_regs(dev, regs); /* if pressure has been released, then don't report X/Y */ - if (data[7] & 0x20) { + if (!(data[7] & 0x20)) { input_report_abs(dev, ABS_X, (data[0] & 0x1F) << 7 | (data[3] & 0x7F)); input_report_abs(dev, ABS_Y, (data[1] & 0x1F) << 7 | (data[4] & 0x7F)); } -- GitLab