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--- linux-2.6.17-vanilla/drivers/input/touchscreen/jornada720_ts.c 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.17/drivers/input/touchscreen/jornada720_ts.c 2006-07-10 17:06:11.000000000 +0000
@@ -0,0 +1,103 @@
+/*
+ * Jornada 720 touchscreen interface based on Jornada 56x interface
+ */
+
+#include <linux/input.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+
+#include <asm/arch/hardware.h>
+#include <asm/arch/jornada720.h>
+#include <asm/irq.h>
+#include <asm/mach/irq.h>
+
+MODULE_AUTHOR("Alex Lange <chicken@handhelds.org>");
+MODULE_DESCRIPTION("Jornada 720 touchscreen driver");
+MODULE_LICENSE("GPL");
+
+static char jornada720_ts_name[] = "Jornada 720 touchscreen";
+
+static struct input_dev *dev;
+
+static irqreturn_t jornada720_mouse_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ int down;
+ int X[3], Y[3], high_x, high_y, x, y;
+
+ udelay(1);
+
+ down = ( (GPLR & GPIO_JORNADA720_MOUSE) == 0);
+
+ if(!down) {
+ input_report_key(dev, BTN_TOUCH, down); /* report a pen up */
+ input_report_abs(dev, ABS_PRESSURE, 0);
+ input_sync(dev);
+ return IRQ_HANDLED;
+ }
+
+ /* read x & y data from mcu interface and pass it on */
+
+ jornada720_mcu_start(MCU_GetTouchSamples);
+ X[0] = jornada720_mcu_read();
+ X[1] = jornada720_mcu_read();
+ X[2] = jornada720_mcu_read();
+ Y[0] = jornada720_mcu_read();
+ Y[1] = jornada720_mcu_read();
+ Y[2] = jornada720_mcu_read();
+ high_x = jornada720_mcu_read(); /* msbs of samples */
+ high_y = jornada720_mcu_read();
+ jornada720_mcu_end();
+
+ X[0] |= (high_x & 3) << 8;
+ X[1] |= (high_x & 0xc) << 6;
+ X[2] |= (high_x & 0x30) << 4;
+
+ Y[0] |= (high_y & 3) << 8;
+ Y[1] |= (high_y & 0xc) << 6;
+ Y[2] |= (high_y & 0x30) << 4;
+
+ /* simple averaging filter */
+ x = (X[0] + X[1] + X[2])/3;
+ y = (Y[0] + Y[1] + Y[2])/3;
+
+ input_report_key(dev, BTN_TOUCH, down);
+ input_report_abs(dev, ABS_X, x);
+ input_report_abs(dev, ABS_Y, y);
+ input_report_abs(dev, ABS_PRESSURE, 1);
+ input_sync(dev);
+
+ return IRQ_HANDLED;
+
+}
+
+static int __init jornada720_ts_init(void)
+{
+ printk("jornada720_ts: Jornada 720 touchscreen\n");
+
+ dev = input_allocate_device();
+ dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
+ dev->absbit[0] = BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE);
+ dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
+
+ dev->absmin[ABS_X] = 270; dev->absmin[ABS_Y] = 180;
+ dev->absmax[ABS_X] = 3900; dev->absmax[ABS_Y] = 3700;
+
+ dev->name = jornada720_ts_name;
+
+ if (request_irq(GPIO_JORNADA720_MOUSE_IRQ, jornada720_mouse_interrupt, SA_INTERRUPT, "Jornada720 Mouse", NULL))
+ printk("Unable to grab Jornada 720 touchscreen IRQ!\n");
+
+ set_irq_type(GPIO_JORNADA720_MOUSE_IRQ, IRQT_RISING);
+
+ input_register_device(dev);
+
+ return 0;
+}
+
+module_init(jornada720_ts_init);
+
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