/*
- * Copyright (c) 2005 John Lenz
+ * LoCoMo keyboard driver for Linux-based ARM PDAs:
+ * - SHARP Zaurus Collie (SL-5500)
+ * - SHARP Zaurus Poodle (SL-5600)
*
+ * Copyright (c) 2005 John Lenz
* Based on from xtkbd.c
- */
-
-/*
- * LoCoMo keyboard driver for Linux/ARM
- */
-
-/*
+ *
+ *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
*
*/
-#include <linux/config.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/init.h>
#define KEY_CONTACT KEY_F18
#define KEY_CENTER KEY_F15
-static unsigned char locomokbd_keycode[LOCOMOKBD_NUMKEYS] = {
+static const unsigned char
+locomokbd_keycode[LOCOMOKBD_NUMKEYS] __devinitconst = {
0, KEY_ESC, KEY_ACTIVITY, 0, 0, 0, 0, 0, 0, 0, /* 0 - 9 */
0, 0, 0, 0, 0, 0, 0, KEY_MENU, KEY_HOME, KEY_CONTACT, /* 10 - 19 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 20 - 29 */
#define KB_COLS 8
#define KB_ROWMASK(r) (1 << (r))
#define SCANCODE(c,r) ( ((c)<<4) + (r) + 1 )
-#define NR_SCANCODES 128
#define KB_DELAY 8
#define SCAN_INTERVAL (HZ/10)
-#define LOCOMOKBD_PRESSED 1
struct locomokbd {
unsigned char keycode[LOCOMOKBD_NUMKEYS];
- struct input_dev input;
+ struct input_dev *input;
char phys[32];
- struct locomo_dev *ldev;
unsigned long base;
spinlock_t lock;
struct timer_list timer;
+ unsigned long suspend_jiffies;
+ unsigned int count_cancel;
};
/* helper functions for reading the keyboard matrix */
*/
/* Scan the hardware keyboard and push any changes up through the input layer */
-static void locomokbd_scankeyboard(struct locomokbd *locomokbd, struct pt_regs *regs)
+static void locomokbd_scankeyboard(struct locomokbd *locomokbd)
{
- unsigned int row, col, rowd, scancode;
+ unsigned int row, col, rowd;
unsigned long flags;
unsigned int num_pressed;
unsigned long membase = locomokbd->base;
spin_lock_irqsave(&locomokbd->lock, flags);
- if (regs)
- input_regs(&locomokbd->input, regs);
-
locomokbd_charge_all(membase);
num_pressed = 0;
rowd = ~locomo_readl(membase + LOCOMO_KIB);
for (row = 0; row < KB_ROWS; row++) {
+ unsigned int scancode, pressed, key;
+
scancode = SCANCODE(col, row);
- if (rowd & KB_ROWMASK(row)) {
- num_pressed += 1;
- input_report_key(&locomokbd->input, locomokbd->keycode[scancode], 1);
- } else {
- input_report_key(&locomokbd->input, locomokbd->keycode[scancode], 0);
- }
+ pressed = rowd & KB_ROWMASK(row);
+ key = locomokbd->keycode[scancode];
+
+ input_report_key(locomokbd->input, key, pressed);
+ if (likely(!pressed))
+ continue;
+
+ num_pressed++;
+
+ /* The "Cancel/ESC" key is labeled "On/Off" on
+ * Collie and Poodle and should suspend the device
+ * if it was pressed for more than a second. */
+ if (unlikely(key == KEY_ESC)) {
+ if (!time_after(jiffies,
+ locomokbd->suspend_jiffies + HZ))
+ continue;
+ if (locomokbd->count_cancel++
+ != (HZ/SCAN_INTERVAL + 1))
+ continue;
+ input_event(locomokbd->input, EV_PWR,
+ KEY_SUSPEND, 1);
+ locomokbd->suspend_jiffies = jiffies;
+ } else
+ locomokbd->count_cancel = 0;
}
locomokbd_reset_col(membase, col);
}
locomokbd_activate_all(membase);
- input_sync(&locomokbd->input);
+ input_sync(locomokbd->input);
/* if any keys are pressed, enable the timer */
if (num_pressed)
mod_timer(&locomokbd->timer, jiffies + SCAN_INTERVAL);
+ else
+ locomokbd->count_cancel = 0;
spin_unlock_irqrestore(&locomokbd->lock, flags);
}
/*
* LoCoMo keyboard interrupt handler.
*/
-static irqreturn_t locomokbd_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t locomokbd_interrupt(int irq, void *dev_id)
{
struct locomokbd *locomokbd = dev_id;
/** wait chattering delay **/
udelay(100);
- locomokbd_scankeyboard(locomokbd, regs);
+ locomokbd_scankeyboard(locomokbd);
return IRQ_HANDLED;
}
static void locomokbd_timer_callback(unsigned long data)
{
struct locomokbd *locomokbd = (struct locomokbd *) data;
- locomokbd_scankeyboard(locomokbd, NULL);
+
+ locomokbd_scankeyboard(locomokbd);
}
-static int locomokbd_probe(struct locomo_dev *dev)
+static int __devinit locomokbd_probe(struct locomo_dev *dev)
{
struct locomokbd *locomokbd;
- int i, ret;
-
- locomokbd = kmalloc(sizeof(struct locomokbd), GFP_KERNEL);
- if (!locomokbd)
- return -ENOMEM;
-
- memset(locomokbd, 0, sizeof(struct locomokbd));
+ struct input_dev *input_dev;
+ int i, err;
+
+ locomokbd = kzalloc(sizeof(struct locomokbd), GFP_KERNEL);
+ input_dev = input_allocate_device();
+ if (!locomokbd || !input_dev) {
+ err = -ENOMEM;
+ goto err_free_mem;
+ }
/* try and claim memory region */
if (!request_mem_region((unsigned long) dev->mapbase,
dev->length,
LOCOMO_DRIVER_NAME(dev))) {
- ret = -EBUSY;
+ err = -EBUSY;
printk(KERN_ERR "locomokbd: Can't acquire access to io memory for keyboard\n");
- goto free;
+ goto err_free_mem;
}
- locomokbd->ldev = dev;
locomo_set_drvdata(dev, locomokbd);
locomokbd->base = (unsigned long) dev->mapbase;
locomokbd->timer.function = locomokbd_timer_callback;
locomokbd->timer.data = (unsigned long) locomokbd;
- locomokbd->input.evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
+ locomokbd->suspend_jiffies = jiffies;
- init_input_dev(&locomokbd->input);
- locomokbd->input.keycode = locomokbd->keycode;
- locomokbd->input.keycodesize = sizeof(unsigned char);
- locomokbd->input.keycodemax = ARRAY_SIZE(locomokbd_keycode);
- locomokbd->input.private = locomokbd;
+ locomokbd->input = input_dev;
+ strcpy(locomokbd->phys, "locomokbd/input0");
- memcpy(locomokbd->keycode, locomokbd_keycode, sizeof(locomokbd->keycode));
- for (i = 0; i < LOCOMOKBD_NUMKEYS; i++)
- set_bit(locomokbd->keycode[i], locomokbd->input.keybit);
- clear_bit(0, locomokbd->input.keybit);
+ input_dev->name = "LoCoMo keyboard";
+ input_dev->phys = locomokbd->phys;
+ input_dev->id.bustype = BUS_HOST;
+ input_dev->id.vendor = 0x0001;
+ input_dev->id.product = 0x0001;
+ input_dev->id.version = 0x0100;
+ input_dev->dev.parent = &dev->dev;
- strcpy(locomokbd->phys, "locomokbd/input0");
+ input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) |
+ BIT_MASK(EV_PWR);
+ input_dev->keycode = locomokbd->keycode;
+ input_dev->keycodesize = sizeof(locomokbd_keycode[0]);
+ input_dev->keycodemax = ARRAY_SIZE(locomokbd_keycode);
- locomokbd->input.name = "LoCoMo keyboard";
- locomokbd->input.phys = locomokbd->phys;
- locomokbd->input.id.bustype = BUS_XTKBD;
- locomokbd->input.id.vendor = 0x0001;
- locomokbd->input.id.product = 0x0001;
- locomokbd->input.id.version = 0x0100;
+ memcpy(locomokbd->keycode, locomokbd_keycode, sizeof(locomokbd->keycode));
+ for (i = 0; i < LOCOMOKBD_NUMKEYS; i++)
+ set_bit(locomokbd->keycode[i], input_dev->keybit);
+ clear_bit(0, input_dev->keybit);
/* attempt to get the interrupt */
- ret = request_irq(dev->irq[0], locomokbd_interrupt, 0, "locomokbd", locomokbd);
- if (ret) {
+ err = request_irq(dev->irq[0], locomokbd_interrupt, 0, "locomokbd", locomokbd);
+ if (err) {
printk(KERN_ERR "locomokbd: Can't get irq for keyboard\n");
- goto out;
+ goto err_release_region;
}
- input_register_device(&locomokbd->input);
-
- printk(KERN_INFO "input: LoCoMo keyboard on locomokbd\n");
+ err = input_register_device(locomokbd->input);
+ if (err)
+ goto err_free_irq;
return 0;
-out:
+ err_free_irq:
+ free_irq(dev->irq[0], locomokbd);
+ err_release_region:
release_mem_region((unsigned long) dev->mapbase, dev->length);
locomo_set_drvdata(dev, NULL);
-free:
+ err_free_mem:
+ input_free_device(input_dev);
kfree(locomokbd);
- return ret;
+ return err;
}
-static int locomokbd_remove(struct locomo_dev *dev)
+static int __devexit locomokbd_remove(struct locomo_dev *dev)
{
struct locomokbd *locomokbd = locomo_get_drvdata(dev);
del_timer_sync(&locomokbd->timer);
- input_unregister_device(&locomokbd->input);
+ input_unregister_device(locomokbd->input);
locomo_set_drvdata(dev, NULL);
release_mem_region((unsigned long) dev->mapbase, dev->length);
},
.devid = LOCOMO_DEVID_KEYBOARD,
.probe = locomokbd_probe,
- .remove = locomokbd_remove,
+ .remove = __devexit_p(locomokbd_remove),
};
static int __init locomokbd_init(void)
projects / linux-2.6 / blobdiff