mirror of
https://github.com/adulau/aha.git
synced 2024-12-30 20:56:23 +00:00
eca1ed196c
Input: convert drivers/input/touchscreen to dynamic input_dev allocation This is required for input_dev sysfs integration Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
135 lines
3.1 KiB
C
135 lines
3.1 KiB
C
#include <linux/input.h>
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
|
|
#include <linux/interrupt.h>
|
|
#include <asm/io.h>
|
|
#include <asm/delay.h>
|
|
#include <asm/adc.h>
|
|
#include <asm/hp6xx/hp6xx.h>
|
|
|
|
#define MODNAME "hp680_ts_input"
|
|
|
|
#define HP680_TS_ABS_X_MIN 40
|
|
#define HP680_TS_ABS_X_MAX 950
|
|
#define HP680_TS_ABS_Y_MIN 80
|
|
#define HP680_TS_ABS_Y_MAX 910
|
|
|
|
#define SCPCR 0xa4000116
|
|
#define PHDR 0xa400012e
|
|
#define SCPDR 0xa4000136
|
|
|
|
static void do_softint(void *data);
|
|
|
|
static struct input_dev *hp680_ts_dev;
|
|
static DECLARE_WORK(work, do_softint, 0);
|
|
|
|
static void do_softint(void *data)
|
|
{
|
|
int absx = 0, absy = 0;
|
|
u8 scpdr;
|
|
int touched = 0;
|
|
|
|
if (ctrl_inb(PHDR) & PHDR_TS_PEN_DOWN) {
|
|
scpdr = ctrl_inb(SCPDR);
|
|
scpdr |= SCPDR_TS_SCAN_ENABLE;
|
|
scpdr &= ~SCPDR_TS_SCAN_Y;
|
|
ctrl_outb(scpdr, SCPDR);
|
|
udelay(30);
|
|
|
|
absy = adc_single(ADC_CHANNEL_TS_Y);
|
|
|
|
scpdr = ctrl_inb(SCPDR);
|
|
scpdr |= SCPDR_TS_SCAN_Y;
|
|
scpdr &= ~SCPDR_TS_SCAN_X;
|
|
ctrl_outb(scpdr, SCPDR);
|
|
udelay(30);
|
|
|
|
absx = adc_single(ADC_CHANNEL_TS_X);
|
|
|
|
scpdr = ctrl_inb(SCPDR);
|
|
scpdr |= SCPDR_TS_SCAN_X;
|
|
scpdr &= ~SCPDR_TS_SCAN_ENABLE;
|
|
ctrl_outb(scpdr, SCPDR);
|
|
udelay(100);
|
|
touched = ctrl_inb(PHDR) & PHDR_TS_PEN_DOWN;
|
|
}
|
|
|
|
if (touched) {
|
|
input_report_key(hp680_ts_dev, BTN_TOUCH, 1);
|
|
input_report_abs(hp680_ts_dev, ABS_X, absx);
|
|
input_report_abs(hp680_ts_dev, ABS_Y, absy);
|
|
} else {
|
|
input_report_key(hp680_ts_dev, BTN_TOUCH, 0);
|
|
}
|
|
|
|
input_sync(hp680_ts_dev);
|
|
enable_irq(HP680_TS_IRQ);
|
|
}
|
|
|
|
static irqreturn_t hp680_ts_interrupt(int irq, void *dev, struct pt_regs *regs)
|
|
{
|
|
disable_irq_nosync(irq);
|
|
schedule_delayed_work(&work, HZ / 20);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int __init hp680_ts_init(void)
|
|
{
|
|
u8 scpdr;
|
|
u16 scpcr;
|
|
|
|
scpdr = ctrl_inb(SCPDR);
|
|
scpdr |= SCPDR_TS_SCAN_X | SCPDR_TS_SCAN_Y;
|
|
scpdr &= ~SCPDR_TS_SCAN_ENABLE;
|
|
ctrl_outb(scpdr, SCPDR);
|
|
|
|
scpcr = ctrl_inw(SCPCR);
|
|
scpcr &= ~SCPCR_TS_MASK;
|
|
scpcr |= SCPCR_TS_ENABLE;
|
|
ctrl_outw(scpcr, SCPCR);
|
|
|
|
hp680_ts_dev = input_allocate_device();
|
|
if (!hp680_ts_dev)
|
|
return -ENOMEM;
|
|
|
|
hp680_ts_dev->evbit[0] = BIT(EV_ABS) | BIT(EV_KEY);
|
|
hp680_ts_dev->absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
|
|
hp680_ts_dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
|
|
|
|
hp680_ts_dev->absmin[ABS_X] = HP680_TS_ABS_X_MIN;
|
|
hp680_ts_dev->absmin[ABS_Y] = HP680_TS_ABS_Y_MIN;
|
|
hp680_ts_dev->absmax[ABS_X] = HP680_TS_ABS_X_MAX;
|
|
hp680_ts_dev->absmax[ABS_Y] = HP680_TS_ABS_Y_MAX;
|
|
|
|
hp680_ts_dev->name = "HP Jornada touchscreen";
|
|
hp680_ts_dev->phys = "hp680_ts/input0";
|
|
|
|
input_register_device(hp680_ts_dev);
|
|
|
|
if (request_irq(HP680_TS_IRQ, hp680_ts_interrupt,
|
|
SA_INTERRUPT, MODNAME, 0) < 0) {
|
|
printk(KERN_ERR "hp680_touchscreen.c: Can't allocate irq %d\n",
|
|
HP680_TS_IRQ);
|
|
input_unregister_device(hp680_ts_dev);
|
|
return -EBUSY;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __exit hp680_ts_exit(void)
|
|
{
|
|
free_irq(HP680_TS_IRQ, 0);
|
|
cancel_delayed_work(&work);
|
|
flush_scheduled_work();
|
|
input_unregister_device(hp680_ts_dev);
|
|
}
|
|
|
|
module_init(hp680_ts_init);
|
|
module_exit(hp680_ts_exit);
|
|
|
|
MODULE_AUTHOR("Andriy Skulysh, askulysh@image.kiev.ua");
|
|
MODULE_DESCRIPTION("HP Jornada 680 touchscreen driver");
|
|
MODULE_LICENSE("GPL");
|