*
* Copyright (C) 1998 Philip Blundell <philb@gnu.org>
* Copyright (C) 1999 Matthew Wilcox <willy@bofh.ai>
- * Copyright (C) 1999-2006 Helge Deller <deller@gmx.de>
+ * Copyright (C) 1999-2007 Helge Deller <deller@gmx.de>
*
* Very basic HP Human Interface Loop (HIL) driver.
- * This driver handles the keyboard on HP300 (m68k) and on some
+ * This driver handles the keyboard on HP300 (m68k) and on some
* HP700 (parisc) series machines.
*
- *
+ *
* This file is subject to the terms and conditions of the GNU General Public
* License version 2. See the file COPYING in the main directory of this
* archive for more details.
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/hil.h>
+#include <linux/io.h>
#include <linux/spinlock.h>
+#include <asm/irq.h>
+#ifdef CONFIG_HP300
+#include <asm/hwtest.h>
+#endif
MODULE_AUTHOR("Philip Blundell, Matthew Wilcox, Helge Deller");
#elif defined(CONFIG_HP300)
- #define HILBASE 0xf0428000 /* HP300 (m86k) port address */
+ #define HILBASE 0xf0428000UL /* HP300 (m68k) port address */
#define HIL_DATA 0x1
#define HIL_CMD 0x3
#define HIL_IRQ 2
#endif
-
+
/* HIL helper functions */
-
+
#define hil_busy() (hil_readb(HILBASE + HIL_CMD) & HIL_BUSY)
#define hil_data_available() (hil_readb(HILBASE + HIL_CMD) & HIL_DATA_RDY)
#define hil_status() (hil_readb(HILBASE + HIL_CMD))
#define hil_write_data(x) do { hil_writeb((x), HILBASE + HIL_DATA); } while (0)
/* HIL constants */
-
+
#define HIL_BUSY 0x02
#define HIL_DATA_RDY 0x01
#define HIL_INTON 0x5C /* Turn on interrupts. */
#define HIL_INTOFF 0x5D /* Turn off interrupts. */
-#define HIL_READKBDSADR 0xF9
-#define HIL_WRITEKBDSADR 0xE9
+#define HIL_READKBDSADR 0xF9
+#define HIL_WRITEKBDSADR 0xE9
-static unsigned int hphilkeyb_keycode[HIL_KEYCODES_SET1_TBLSIZE] =
+static unsigned int hphilkeyb_keycode[HIL_KEYCODES_SET1_TBLSIZE] __read_mostly =
{ HIL_KEYCODES_SET1 };
/* HIL structure */
struct input_dev *dev;
unsigned int curdev;
-
+
unsigned char s;
unsigned char c;
int valid;
-
+
unsigned char data[16];
unsigned int ptr;
spinlock_t lock;
int down;
int key;
unsigned char scode;
-
+
switch (hil_dev.data[0]) {
case 0x40:
down = (hil_dev.data[1] & 1) == 0;
hil_dev.curdev = 0;
}
+
static inline void handle_status(unsigned char s, unsigned char c)
{
if (c & 0x8) {
}
}
+
static inline void handle_data(unsigned char s, unsigned char c)
{
if (hil_dev.curdev) {
}
-/*
- * Handle HIL interrupts.
- */
-static irqreturn_t hil_interrupt(int irq, void *handle, struct pt_regs *regs)
+/* handle HIL interrupts */
+static irqreturn_t hil_interrupt(int irq, void *handle)
{
unsigned char s, c;
-
+
s = hil_status();
c = hil_read_data();
return IRQ_HANDLED;
}
-/*
- * Send a command to the HIL
- */
+/* send a command to the HIL */
static void hil_do(unsigned char cmd, unsigned char *data, unsigned int len)
{
unsigned long flags;
}
-/*
- * Initialise HIL.
- */
-
+/* initialise HIL */
static int __init
hil_keyb_init(void)
{
unsigned char c;
unsigned int i, kbid;
wait_queue_head_t hil_wait;
+ int err;
if (hil_dev.dev) {
return -ENODEV; /* already initialized */
}
+ spin_lock_init(&hil_dev.lock);
hil_dev.dev = input_allocate_device();
if (!hil_dev.dev)
return -ENOMEM;
- hil_dev.dev->private = &hil_dev;
-
+
#if defined(CONFIG_HP300)
- if (!hwreg_present((void *)(HILBASE + HIL_DATA)))
- return -ENODEV;
-
- request_region(HILBASE+HIL_DATA, 2, "hil");
+ if (!MACH_IS_HP300) {
+ err = -ENODEV;
+ goto err1;
+ }
+ if (!hwreg_present((void *)(HILBASE + HIL_DATA))) {
+ printk(KERN_ERR "HIL: hardware register was not found\n");
+ err = -ENODEV;
+ goto err1;
+ }
+ if (!request_region(HILBASE + HIL_DATA, 2, "hil")) {
+ printk(KERN_ERR "HIL: IOPORT region already used\n");
+ err = -EIO;
+ goto err1;
+ }
#endif
-
- request_irq(HIL_IRQ, hil_interrupt, 0, "hil", hil_dev.dev_id);
+
+ err = request_irq(HIL_IRQ, hil_interrupt, 0, "hil", hil_dev.dev_id);
+ if (err) {
+ printk(KERN_ERR "HIL: Can't get IRQ\n");
+ goto err2;
+ }
/* Turn on interrupts */
hil_do(HIL_INTON, NULL, 0);
init_waitqueue_head(&hil_wait);
wait_event_interruptible_timeout(hil_wait, hil_dev.valid, 3*HZ);
if (!hil_dev.valid) {
- printk(KERN_WARNING "HIL: timed out, assuming no keyboard present.\n");
+ printk(KERN_WARNING "HIL: timed out, assuming no keyboard present\n");
}
- c = hil_dev.c;
+ c = hil_dev.c;
hil_dev.valid = 0;
if (c == 0) {
kbid = -1;
- printk(KERN_WARNING "HIL: no keyboard present.\n");
+ printk(KERN_WARNING "HIL: no keyboard present\n");
} else {
kbid = ffz(~c);
- /* printk(KERN_INFO "HIL: keyboard found at id %d\n", kbid); */
+ printk(KERN_INFO "HIL: keyboard found at id %d\n", kbid);
}
/* set it to raw mode */
c = 0;
hil_do(HIL_WRITEKBDSADR, &c, 1);
-
+
for (i = 0; i < HIL_KEYCODES_SET1_TBLSIZE; i++)
if (hphilkeyb_keycode[i] != KEY_RESERVED)
set_bit(hphilkeyb_keycode[i], hil_dev.dev->keybit);
- hil_dev.dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
- hil_dev.dev->ledbit[0] = BIT(LED_NUML) | BIT(LED_CAPSL) | BIT(LED_SCROLLL);
- hil_dev.dev->keycodemax = HIL_KEYCODES_SET1_TBLSIZE;
- hil_dev.dev->keycodesize = sizeof(hphilkeyb_keycode[0]);
- hil_dev.dev->keycode = hphilkeyb_keycode;
- hil_dev.dev->name = "HIL keyboard";
- hil_dev.dev->phys = "hpkbd/input0";
+ hil_dev.dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
+ hil_dev.dev->ledbit[0] = BIT_MASK(LED_NUML) | BIT_MASK(LED_CAPSL) |
+ BIT_MASK(LED_SCROLLL);
+ hil_dev.dev->keycodemax = HIL_KEYCODES_SET1_TBLSIZE;
+ hil_dev.dev->keycodesize= sizeof(hphilkeyb_keycode[0]);
+ hil_dev.dev->keycode = hphilkeyb_keycode;
+ hil_dev.dev->name = "HIL keyboard";
+ hil_dev.dev->phys = "hpkbd/input0";
hil_dev.dev->id.bustype = BUS_HIL;
hil_dev.dev->id.vendor = PCI_VENDOR_ID_HP;
hil_dev.dev->id.product = 0x0001;
hil_dev.dev->id.version = 0x0010;
- input_register_device(hil_dev.dev);
+ err = input_register_device(hil_dev.dev);
+ if (err) {
+ printk(KERN_ERR "HIL: Can't register device\n");
+ goto err3;
+ }
printk(KERN_INFO "input: %s, ID %d at 0x%08lx (irq %d) found and attached\n",
- hil_dev.dev->name, kbid, HILBASE, HIL_IRQ);
+ hil_dev.dev->name, kbid, HILBASE, HIL_IRQ);
return 0;
+
+err3:
+ hil_do(HIL_INTOFF, NULL, 0);
+ disable_irq(HIL_IRQ);
+ free_irq(HIL_IRQ, hil_dev.dev_id);
+err2:
+#if defined(CONFIG_HP300)
+ release_region(HILBASE + HIL_DATA, 2);
+err1:
+#endif
+ input_free_device(hil_dev.dev);
+ hil_dev.dev = NULL;
+ return err;
}
+
#if defined(CONFIG_PARISC)
static int __init
hil_init_chip(struct parisc_device *dev)
hil_base = dev->hpa.start;
hil_irq = dev->irq;
hil_dev.dev_id = dev;
-
+
printk(KERN_INFO "Found HIL bus at 0x%08lx, IRQ %d\n", hil_base, hil_irq);
return hil_keyb_init();
#endif /* CONFIG_PARISC */
-
-
-
static int __init hil_init(void)
{
#if defined(CONFIG_PARISC)
module_init(hil_init);
module_exit(hil_exit);
-