1 --- linux-2.6.17-vanilla/drivers/input/touchscreen/jornada720_ts.c 1970-01-01 00:00:00.000000000 +0000
2 +++ linux-2.6.17/drivers/input/touchscreen/jornada720_ts.c 2006-07-10 17:06:11.000000000 +0000
5 + * Jornada 720 touchscreen interface based on Jornada 56x interface
8 +#include <linux/input.h>
9 +#include <linux/module.h>
10 +#include <linux/kernel.h>
11 +#include <linux/init.h>
12 +#include <linux/delay.h>
13 +#include <linux/slab.h>
14 +#include <linux/errno.h>
15 +#include <linux/interrupt.h>
17 +#include <asm/arch/hardware.h>
18 +#include <asm/arch/jornada720.h>
20 +#include <asm/mach/irq.h>
22 +MODULE_AUTHOR("Alex Lange <chicken@handhelds.org>");
23 +MODULE_DESCRIPTION("Jornada 720 touchscreen driver");
24 +MODULE_LICENSE("GPL");
26 +static char jornada720_ts_name[] = "Jornada 720 touchscreen";
28 +static struct input_dev *dev;
30 +static irqreturn_t jornada720_mouse_interrupt(int irq, void *dev_id, struct pt_regs *regs)
33 + int X[3], Y[3], high_x, high_y, x, y;
37 + down = ( (GPLR & GPIO_JORNADA720_MOUSE) == 0);
40 + input_report_key(dev, BTN_TOUCH, down); /* report a pen up */
41 + input_report_abs(dev, ABS_PRESSURE, 0);
46 + /* read x & y data from mcu interface and pass it on */
48 + jornada720_mcu_start(MCU_GetTouchSamples);
49 + X[0] = jornada720_mcu_read();
50 + X[1] = jornada720_mcu_read();
51 + X[2] = jornada720_mcu_read();
52 + Y[0] = jornada720_mcu_read();
53 + Y[1] = jornada720_mcu_read();
54 + Y[2] = jornada720_mcu_read();
55 + high_x = jornada720_mcu_read(); /* msbs of samples */
56 + high_y = jornada720_mcu_read();
57 + jornada720_mcu_end();
59 + X[0] |= (high_x & 3) << 8;
60 + X[1] |= (high_x & 0xc) << 6;
61 + X[2] |= (high_x & 0x30) << 4;
63 + Y[0] |= (high_y & 3) << 8;
64 + Y[1] |= (high_y & 0xc) << 6;
65 + Y[2] |= (high_y & 0x30) << 4;
67 + /* simple averaging filter */
68 + x = (X[0] + X[1] + X[2])/3;
69 + y = (Y[0] + Y[1] + Y[2])/3;
71 + input_report_key(dev, BTN_TOUCH, down);
72 + input_report_abs(dev, ABS_X, x);
73 + input_report_abs(dev, ABS_Y, y);
74 + input_report_abs(dev, ABS_PRESSURE, 1);
81 +static int __init jornada720_ts_init(void)
83 + printk("jornada720_ts: Jornada 720 touchscreen\n");
85 + dev = input_allocate_device();
86 + dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
87 + dev->absbit[0] = BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE);
88 + dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
90 + dev->absmin[ABS_X] = 270; dev->absmin[ABS_Y] = 180;
91 + dev->absmax[ABS_X] = 3900; dev->absmax[ABS_Y] = 3700;
93 + dev->name = jornada720_ts_name;
95 + if (request_irq(GPIO_JORNADA720_MOUSE_IRQ, jornada720_mouse_interrupt, SA_INTERRUPT, "Jornada720 Mouse", NULL))
96 + printk("Unable to grab Jornada 720 touchscreen IRQ!\n");
98 + set_irq_type(GPIO_JORNADA720_MOUSE_IRQ, IRQT_RISING);
100 + input_register_device(dev);
105 +module_init(jornada720_ts_init);