* Copyright (c) 2000-2001 Vojtech Pavlik
*
* Based on the work of:
- * Alan Cox Robin O'Leary
+ * Alan Cox Robin O'Leary
*/
/*
#include <linux/input.h>
#include <linux/init.h>
#include <linux/interrupt.h>
+#include <linux/pci.h>
#include <asm/io.h>
#include <asm/irq.h>
static int pc110pad_irq = 10;
static int pc110pad_io = 0x15e0;
-static struct input_dev pc110pad_dev;
+static struct input_dev *pc110pad_dev;
static int pc110pad_data[3];
static int pc110pad_count;
-static int pc110pad_used;
-static char *pc110pad_name = "IBM PC110 TouchPad";
-static char *pc110pad_phys = "isa15e0/input0";
-
-static irqreturn_t pc110pad_interrupt(int irq, void *ptr, struct pt_regs *regs)
+static irqreturn_t pc110pad_interrupt(int irq, void *ptr)
{
int value = inb_p(pc110pad_io);
int handshake = inb_p(pc110pad_io + 2);
if (pc110pad_count < 3)
return IRQ_HANDLED;
-
- input_regs(&pc110pad_dev, regs);
- input_report_key(&pc110pad_dev, BTN_TOUCH,
+
+ input_report_key(pc110pad_dev, BTN_TOUCH,
pc110pad_data[0] & 0x01);
- input_report_abs(&pc110pad_dev, ABS_X,
+ input_report_abs(pc110pad_dev, ABS_X,
pc110pad_data[1] | ((pc110pad_data[0] << 3) & 0x80) | ((pc110pad_data[0] << 1) & 0x100));
- input_report_abs(&pc110pad_dev, ABS_Y,
+ input_report_abs(pc110pad_dev, ABS_Y,
pc110pad_data[2] | ((pc110pad_data[0] << 4) & 0x80));
- input_sync(&pc110pad_dev);
+ input_sync(pc110pad_dev);
pc110pad_count = 0;
return IRQ_HANDLED;
static void pc110pad_close(struct input_dev *dev)
{
- if (!--pc110pad_used)
- outb(PC110PAD_OFF, pc110pad_io + 2);
+ outb(PC110PAD_OFF, pc110pad_io + 2);
}
static int pc110pad_open(struct input_dev *dev)
{
- if (pc110pad_used++)
- return 0;
-
- pc110pad_interrupt(0,NULL,NULL);
- pc110pad_interrupt(0,NULL,NULL);
- pc110pad_interrupt(0,NULL,NULL);
+ pc110pad_interrupt(0, NULL);
+ pc110pad_interrupt(0, NULL);
+ pc110pad_interrupt(0, NULL);
outb(PC110PAD_ON, pc110pad_io + 2);
pc110pad_count = 0;
return 0;
}
+/*
+ * We try to avoid enabling the hardware if it's not
+ * there, but we don't know how to test. But we do know
+ * that the PC110 is not a PCI system. So if we find any
+ * PCI devices in the machine, we don't have a PC110.
+ */
static int __init pc110pad_init(void)
{
- if (request_region(pc110pad_io, 4, "pc110pad"))
- {
- printk(KERN_ERR "pc110pad: I/O area %#x-%#x in use.\n", pc110pad_io, pc110pad_io + 4);
+ struct pci_dev *dev;
+ int err;
+
+ dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL);
+ if (dev) {
+ pci_dev_put(dev);
+ return -ENOENT;
+ }
+
+ if (!request_region(pc110pad_io, 4, "pc110pad")) {
+ printk(KERN_ERR "pc110pad: I/O area %#x-%#x in use.\n",
+ pc110pad_io, pc110pad_io + 4);
return -EBUSY;
}
outb(PC110PAD_OFF, pc110pad_io + 2);
- if (request_irq(pc110pad_irq, pc110pad_interrupt, 0, "pc110pad", NULL))
- {
- release_region(pc110pad_io, 4);
+ if (request_irq(pc110pad_irq, pc110pad_interrupt, 0, "pc110pad", NULL)) {
printk(KERN_ERR "pc110pad: Unable to get irq %d.\n", pc110pad_irq);
- return -EBUSY;
+ err = -EBUSY;
+ goto err_release_region;
}
- pc110pad_dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
- pc110pad_dev.absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
- pc110pad_dev.keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
+ pc110pad_dev = input_allocate_device();
+ if (!pc110pad_dev) {
+ printk(KERN_ERR "pc110pad: Not enough memory.\n");
+ err = -ENOMEM;
+ goto err_free_irq;
+ }
+
+ pc110pad_dev->name = "IBM PC110 TouchPad";
+ pc110pad_dev->phys = "isa15e0/input0";
+ pc110pad_dev->id.bustype = BUS_ISA;
+ pc110pad_dev->id.vendor = 0x0003;
+ pc110pad_dev->id.product = 0x0001;
+ pc110pad_dev->id.version = 0x0100;
+
+ pc110pad_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
+ pc110pad_dev->absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
+ pc110pad_dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
- pc110pad_dev.absmax[ABS_X] = 0x1ff;
- pc110pad_dev.absmax[ABS_Y] = 0x0ff;
-
- pc110pad_dev.open = pc110pad_open;
- pc110pad_dev.close = pc110pad_close;
+ pc110pad_dev->absmax[ABS_X] = 0x1ff;
+ pc110pad_dev->absmax[ABS_Y] = 0x0ff;
- pc110pad_dev.name = pc110pad_name;
- pc110pad_dev.phys = pc110pad_phys;
- pc110pad_dev.id.bustype = BUS_ISA;
- pc110pad_dev.id.vendor = 0x0003;
- pc110pad_dev.id.product = 0x0001;
- pc110pad_dev.id.version = 0x0100;
+ pc110pad_dev->open = pc110pad_open;
+ pc110pad_dev->close = pc110pad_close;
- input_register_device(&pc110pad_dev);
+ err = input_register_device(pc110pad_dev);
+ if (err)
+ goto err_free_dev;
- printk(KERN_INFO "input: %s at %#x irq %d\n",
- pc110pad_name, pc110pad_io, pc110pad_irq);
-
return 0;
+
+ err_free_dev:
+ input_free_device(pc110pad_dev);
+ err_free_irq:
+ free_irq(pc110pad_irq, NULL);
+ err_release_region:
+ release_region(pc110pad_io, 4);
+
+ return err;
}
-
+
static void __exit pc110pad_exit(void)
{
- input_unregister_device(&pc110pad_dev);
-
outb(PC110PAD_OFF, pc110pad_io + 2);
-
free_irq(pc110pad_irq, NULL);
+ input_unregister_device(pc110pad_dev);
release_region(pc110pad_io, 4);
}
git://git.onelab.eu / linux-2.6.git / blobdiff