File waltoptablet.c.patch of Package waltoptablet-kmp

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File waltoptablet.c.patch of Package waltoptablet-kmp (Revision c680953f16c669e77aee7f1a59d3a5dd)

Currently displaying revision c680953f16c669e77aee7f1a59d3a5dd , Show latest

--- waltoptablet.c.orig	2010-05-18 16:10:09.000000000 +0200
+++ waltoptablet.c	2010-05-18 16:10:58.000000000 +0200
@@ -16,7 +16,10 @@
 MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_LICENSE("GPL");
 
-#define waltop_LENGTH 9
+#define waltop_LENGTH 7
+#ifndef SERIO_WALTOP
+#define SERIO_WALTOP 0x3f
+#endif
 
 /* Defined a Tablet data structure. */
 struct waltop {
@@ -35,14 +38,20 @@
 	struct  input_dev  *dev = mywaltop->dev;
 	unsigned int	x_coord, y_coord, sw_status, pressurevalue;		// GaryYeh: for parse the data packet
 
+
 	if (mywaltop->idx == 0) 
 	{
-		if ((data & 0xf0) != 0x80)	return IRQ_HANDLED;	/* resync skip until start of frame */
+		if ((data & 0xf0) != 0x90)
+		{
+			printk(KERN_INFO "waltop resync skip until start of frame\n");
+			return IRQ_HANDLED;	/* resync skip until start of frame */
+		}
 	} 
 	else 
 	{
 		if (data & 0x80) 
 		{
+		 	printk(KERN_INFO "waltop resync skip garbage\n");
 			mywaltop->idx = 0;		/* resync skip garbage */
 			return IRQ_HANDLED;
 		}
@@ -52,30 +61,35 @@
 
 	if (mywaltop->idx == waltop_LENGTH)
 	{
-		x_coord = (mywaltop->data[1] & 0x7F) << 9;	// GaryYeh: high byte
-		x_coord |= (mywaltop->data[2] & 0x7F) << 2;	// GaryYeh: low byte
-		x_coord |= (mywaltop->data[6] & 0x60) >> 5;	// GaryYeh: lowest 2 bit at byte6
+		x_coord = mywaltop->data[1] << 1;
+		x_coord |= (mywaltop->data[6] & 0x02)<<7;
+		x_coord |= (mywaltop->data[6] & 0x01);
+		x_coord |= mywaltop->data[2] << 9;
 		input_report_abs(dev, ABS_X, x_coord);
-		y_coord = (mywaltop->data[3] & 0x7F) << 9;	// GaryYeh: high byte
-		y_coord |= (mywaltop->data[4] & 0x7F) << 2;	// GaryYeh: low byte
-		y_coord |= (mywaltop->data[6] & 0x60) >> 3;	// GaryYeh: lowest 2 bit at byte6
+
+		y_coord = mywaltop->data[3]<<1;
+		y_coord |= (mywaltop->data[6] & 0x08) << 5;
+		y_coord |= (mywaltop->data[6] & 0x04)>>2;
+		y_coord |= mywaltop->data[4] << 9;
 		input_report_abs(dev, ABS_Y, y_coord);
-		pressurevalue = (mywaltop->data[5] & 0x7F);	// GaryYeh: Acturally, this byte is enough...
-		pressurevalue |= (mywaltop->data[6] & 0x07) << 7;
+
+		pressurevalue = mywaltop->data[5];
+		pressurevalue |= (mywaltop->data[6] & 0xf0) << 7;
 		input_report_abs(dev, ABS_PRESSURE, pressurevalue);
+
 		sw_status = (mywaltop->data[0] & 0x07);
 		if (  sw_status == 0 )
 		{
 			input_report_key(dev, BTN_TOUCH, 0);
-			printk(KERN_INFO "X COORD=%d, Y COORD=%d, SW=%d,,,,,\n", x_coord, y_coord, sw_status);
+			/* printk(KERN_INFO "X COORD=%d, Y COORD=%d, SW=%d,,,,,\n", x_coord, y_coord, sw_status); */
 		}
 		else
 		{
 			input_report_key(dev, BTN_TOUCH, 1);
-			printk(KERN_INFO "x_coord=%d, y_coord=%d, sw=%d.....\n", x_coord, y_coord, sw_status);
+			/* printk(KERN_INFO "x_coord=%d, y_coord=%d, sw=%d.....\n", x_coord, y_coord, sw_status); */
 		}
-			
-		input_sync(dev);		/* GaryYeh: To prevent it be interpreted seperately.*/
+		
+		input_sync(dev);		/* GaryYeh: To prevent it be interpreted seperately.*/
 		mywaltop->idx = 0;		/* GaryYeh: reset index value. */
 	}
 	return IRQ_HANDLED;
@@ -123,7 +137,7 @@
 	input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
 
 	input_set_abs_params(input_dev, ABS_PRESSURE, 0, 256-1, 0, 0);	// pressure maximum levels
-	input_set_abs_params(input_dev, ABS_X, 0, 12300-1, 0, 0);	// X Maximum coordinates
+	input_set_abs_params(input_dev, ABS_X, 0, 12300-1, 0, 0);	// X Maximum coordinates
 	input_set_abs_params(input_dev, ABS_Y, 0, 9120-1, 0, 0);	// Y Maximum coordinates
 
 	serio_set_drvdata(serio, waltop03);

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File waltoptablet.c.patch of Package waltoptablet-kmp (Revision c680953f16c669e77aee7f1a59d3a5dd)

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