linux-stable/drivers/input/keyboard/locomokbd.c
Jiri Slaby 7b19ada2ed get rid of input BIT* duplicate defines
get rid of input BIT* duplicate defines

use newly global defined macros for input layer. Also remove includes of
input.h from non-input sources only for BIT macro definiton. Define the
macro temporarily in local manner, all those local definitons will be
removed further in this patchset (to not break bisecting).
BIT macro will be globally defined (1<<x)

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: <dtor@mail.ru>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Cc: <lenb@kernel.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Cc: <perex@suse.cz>
Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: <vernux@us.ibm.com>
Cc: <malattia@linux.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-19 11:53:42 -07:00

309 lines
8.1 KiB
C

/*
* 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
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <asm/hardware/locomo.h>
#include <asm/irq.h>
MODULE_AUTHOR("John Lenz <lenz@cs.wisc.edu>");
MODULE_DESCRIPTION("LoCoMo keyboard driver");
MODULE_LICENSE("GPL");
#define LOCOMOKBD_NUMKEYS 128
#define KEY_ACTIVITY KEY_F16
#define KEY_CONTACT KEY_F18
#define KEY_CENTER KEY_F15
static unsigned char locomokbd_keycode[LOCOMOKBD_NUMKEYS] = {
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 */
0, 0, 0, KEY_CENTER, 0, KEY_MAIL, 0, 0, 0, 0, /* 30 - 39 */
0, 0, 0, 0, 0, 0, 0, 0, 0, KEY_RIGHT, /* 40 - 49 */
KEY_UP, KEY_LEFT, 0, 0, KEY_P, 0, KEY_O, KEY_I, KEY_Y, KEY_T, /* 50 - 59 */
KEY_E, KEY_W, 0, 0, 0, 0, KEY_DOWN, KEY_ENTER, 0, 0, /* 60 - 69 */
KEY_BACKSPACE, 0, KEY_L, KEY_U, KEY_H, KEY_R, KEY_D, KEY_Q, 0, 0, /* 70 - 79 */
0, 0, 0, 0, 0, 0, KEY_ENTER, KEY_RIGHTSHIFT, KEY_K, KEY_J, /* 80 - 89 */
KEY_G, KEY_F, KEY_X, KEY_S, 0, 0, 0, 0, 0, 0, /* 90 - 99 */
0, 0, KEY_DOT, 0, KEY_COMMA, KEY_N, KEY_B, KEY_C, KEY_Z, KEY_A, /* 100 - 109 */
KEY_LEFTSHIFT, KEY_TAB, KEY_LEFTCTRL, 0, 0, 0, 0, 0, 0, 0, /* 110 - 119 */
KEY_M, KEY_SPACE, KEY_V, KEY_APOSTROPHE, KEY_SLASH, 0, 0, 0 /* 120 - 128 */
};
#define KB_ROWS 16
#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;
char phys[32];
struct locomo_dev *ldev;
unsigned long base;
spinlock_t lock;
struct timer_list timer;
};
/* helper functions for reading the keyboard matrix */
static inline void locomokbd_charge_all(unsigned long membase)
{
locomo_writel(0x00FF, membase + LOCOMO_KSC);
}
static inline void locomokbd_activate_all(unsigned long membase)
{
unsigned long r;
locomo_writel(0, membase + LOCOMO_KSC);
r = locomo_readl(membase + LOCOMO_KIC);
r &= 0xFEFF;
locomo_writel(r, membase + LOCOMO_KIC);
}
static inline void locomokbd_activate_col(unsigned long membase, int col)
{
unsigned short nset;
unsigned short nbset;
nset = 0xFF & ~(1 << col);
nbset = (nset << 8) + nset;
locomo_writel(nbset, membase + LOCOMO_KSC);
}
static inline void locomokbd_reset_col(unsigned long membase, int col)
{
unsigned short nbset;
nbset = ((0xFF & ~(1 << col)) << 8) + 0xFF;
locomo_writel(nbset, membase + LOCOMO_KSC);
}
/*
* The LoCoMo keyboard only generates interrupts when a key is pressed.
* So when a key is pressed, we enable a timer. This timer scans the
* keyboard, and this is how we detect when the key is released.
*/
/* Scan the hardware keyboard and push any changes up through the input layer */
static void locomokbd_scankeyboard(struct locomokbd *locomokbd)
{
unsigned int row, col, rowd, scancode;
unsigned long flags;
unsigned int num_pressed;
unsigned long membase = locomokbd->base;
spin_lock_irqsave(&locomokbd->lock, flags);
locomokbd_charge_all(membase);
num_pressed = 0;
for (col = 0; col < KB_COLS; col++) {
locomokbd_activate_col(membase, col);
udelay(KB_DELAY);
rowd = ~locomo_readl(membase + LOCOMO_KIB);
for (row = 0; row < KB_ROWS; row++) {
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);
}
}
locomokbd_reset_col(membase, col);
}
locomokbd_activate_all(membase);
input_sync(locomokbd->input);
/* if any keys are pressed, enable the timer */
if (num_pressed)
mod_timer(&locomokbd->timer, jiffies + SCAN_INTERVAL);
spin_unlock_irqrestore(&locomokbd->lock, flags);
}
/*
* LoCoMo keyboard interrupt handler.
*/
static irqreturn_t locomokbd_interrupt(int irq, void *dev_id)
{
struct locomokbd *locomokbd = dev_id;
/** wait chattering delay **/
udelay(100);
locomokbd_scankeyboard(locomokbd);
return IRQ_HANDLED;
}
/*
* LoCoMo timer checking for released keys
*/
static void locomokbd_timer_callback(unsigned long data)
{
struct locomokbd *locomokbd = (struct locomokbd *) data;
locomokbd_scankeyboard(locomokbd);
}
static int locomokbd_probe(struct locomo_dev *dev)
{
struct locomokbd *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))) {
err = -EBUSY;
printk(KERN_ERR "locomokbd: Can't acquire access to io memory for keyboard\n");
goto err_free_mem;
}
locomokbd->ldev = dev;
locomo_set_drvdata(dev, locomokbd);
locomokbd->base = (unsigned long) dev->mapbase;
spin_lock_init(&locomokbd->lock);
init_timer(&locomokbd->timer);
locomokbd->timer.function = locomokbd_timer_callback;
locomokbd->timer.data = (unsigned long) locomokbd;
locomokbd->input = input_dev;
strcpy(locomokbd->phys, "locomokbd/input0");
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;
input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
input_dev->keycode = locomokbd->keycode;
input_dev->keycodesize = sizeof(unsigned char);
input_dev->keycodemax = ARRAY_SIZE(locomokbd_keycode);
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 */
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 err_release_region;
}
err = input_register_device(locomokbd->input);
if (err)
goto err_free_irq;
return 0;
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);
err_free_mem:
input_free_device(input_dev);
kfree(locomokbd);
return err;
}
static int locomokbd_remove(struct locomo_dev *dev)
{
struct locomokbd *locomokbd = locomo_get_drvdata(dev);
free_irq(dev->irq[0], locomokbd);
del_timer_sync(&locomokbd->timer);
input_unregister_device(locomokbd->input);
locomo_set_drvdata(dev, NULL);
release_mem_region((unsigned long) dev->mapbase, dev->length);
kfree(locomokbd);
return 0;
}
static struct locomo_driver keyboard_driver = {
.drv = {
.name = "locomokbd"
},
.devid = LOCOMO_DEVID_KEYBOARD,
.probe = locomokbd_probe,
.remove = locomokbd_remove,
};
static int __init locomokbd_init(void)
{
return locomo_driver_register(&keyboard_driver);
}
static void __exit locomokbd_exit(void)
{
locomo_driver_unregister(&keyboard_driver);
}
module_init(locomokbd_init);
module_exit(locomokbd_exit);