linux/drivers/char/briq_panel.c
Tim Schmielau cd354f1ae7 [PATCH] remove many unneeded #includes of sched.h
After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there.  Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.

To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.

Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm.  I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14 08:09:54 -08:00

269 lines
5.3 KiB
C

/*
* Drivers for the Total Impact PPC based computer "BRIQ"
* by Dr. Karsten Jeppesen
*
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/tty.h>
#include <linux/timer.h>
#include <linux/kernel.h>
#include <linux/wait.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/miscdevice.h>
#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/init.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/prom.h>
#define BRIQ_PANEL_MINOR 156
#define BRIQ_PANEL_VFD_IOPORT 0x0390
#define BRIQ_PANEL_LED_IOPORT 0x0398
#define BRIQ_PANEL_VER "1.1 (04/20/2002)"
#define BRIQ_PANEL_MSG0 "Loading Linux"
static int vfd_is_open;
static unsigned char vfd[40];
static int vfd_cursor;
static unsigned char ledpb, led;
static void update_vfd(void)
{
int i;
/* cursor home */
outb(0x02, BRIQ_PANEL_VFD_IOPORT);
for (i=0; i<20; i++)
outb(vfd[i], BRIQ_PANEL_VFD_IOPORT + 1);
/* cursor to next line */
outb(0xc0, BRIQ_PANEL_VFD_IOPORT);
for (i=20; i<40; i++)
outb(vfd[i], BRIQ_PANEL_VFD_IOPORT + 1);
}
static void set_led(char state)
{
if (state == 'R')
led = 0x01;
else if (state == 'G')
led = 0x02;
else if (state == 'Y')
led = 0x03;
else if (state == 'X')
led = 0x00;
outb(led, BRIQ_PANEL_LED_IOPORT);
}
static int briq_panel_open(struct inode *ino, struct file *filep)
{
/* enforce single access */
if (vfd_is_open)
return -EBUSY;
vfd_is_open = 1;
return 0;
}
static int briq_panel_release(struct inode *ino, struct file *filep)
{
if (!vfd_is_open)
return -ENODEV;
vfd_is_open = 0;
return 0;
}
static ssize_t briq_panel_read(struct file *file, char __user *buf, size_t count,
loff_t *ppos)
{
unsigned short c;
unsigned char cp;
#if 0 /* Can't seek (pread) on this device */
if (ppos != &file->f_pos)
return -ESPIPE;
#endif
if (!vfd_is_open)
return -ENODEV;
c = (inb(BRIQ_PANEL_LED_IOPORT) & 0x000c) | (ledpb & 0x0003);
set_led(' ');
/* upper button released */
if ((!(ledpb & 0x0004)) && (c & 0x0004)) {
cp = ' ';
ledpb = c;
if (copy_to_user(buf, &cp, 1))
return -EFAULT;
return 1;
}
/* lower button released */
else if ((!(ledpb & 0x0008)) && (c & 0x0008)) {
cp = '\r';
ledpb = c;
if (copy_to_user(buf, &cp, 1))
return -EFAULT;
return 1;
} else {
ledpb = c;
return 0;
}
}
static void scroll_vfd( void )
{
int i;
for (i=0; i<20; i++) {
vfd[i] = vfd[i+20];
vfd[i+20] = ' ';
}
vfd_cursor = 20;
}
static ssize_t briq_panel_write(struct file *file, const char __user *buf, size_t len,
loff_t *ppos)
{
size_t indx = len;
int i, esc = 0;
#if 0 /* Can't seek (pwrite) on this device */
if (ppos != &file->f_pos)
return -ESPIPE;
#endif
if (!vfd_is_open)
return -EBUSY;
for (;;) {
char c;
if (!indx)
break;
if (get_user(c, buf))
return -EFAULT;
if (esc) {
set_led(c);
esc = 0;
} else if (c == 27) {
esc = 1;
} else if (c == 12) {
/* do a form feed */
for (i=0; i<40; i++)
vfd[i] = ' ';
vfd_cursor = 0;
} else if (c == 10) {
if (vfd_cursor < 20)
vfd_cursor = 20;
else if (vfd_cursor < 40)
vfd_cursor = 40;
else if (vfd_cursor < 60)
vfd_cursor = 60;
if (vfd_cursor > 59)
scroll_vfd();
} else {
/* just a character */
if (vfd_cursor > 39)
scroll_vfd();
vfd[vfd_cursor++] = c;
}
indx--;
buf++;
}
update_vfd();
return len;
}
static const struct file_operations briq_panel_fops = {
.owner = THIS_MODULE,
.read = briq_panel_read,
.write = briq_panel_write,
.open = briq_panel_open,
.release = briq_panel_release,
};
static struct miscdevice briq_panel_miscdev = {
BRIQ_PANEL_MINOR,
"briq_panel",
&briq_panel_fops
};
static int __init briq_panel_init(void)
{
struct device_node *root = find_path_device("/");
const char *machine;
int i;
machine = get_property(root, "model", NULL);
if (!machine || strncmp(machine, "TotalImpact,BRIQ-1", 18) != 0)
return -ENODEV;
printk(KERN_INFO
"briq_panel: v%s Dr. Karsten Jeppesen (kj@totalimpact.com)\n",
BRIQ_PANEL_VER);
if (!request_region(BRIQ_PANEL_VFD_IOPORT, 4, "BRIQ Front Panel"))
return -EBUSY;
if (!request_region(BRIQ_PANEL_LED_IOPORT, 2, "BRIQ Front Panel")) {
release_region(BRIQ_PANEL_VFD_IOPORT, 4);
return -EBUSY;
}
ledpb = inb(BRIQ_PANEL_LED_IOPORT) & 0x000c;
if (misc_register(&briq_panel_miscdev) < 0) {
release_region(BRIQ_PANEL_VFD_IOPORT, 4);
release_region(BRIQ_PANEL_LED_IOPORT, 2);
return -EBUSY;
}
outb(0x38, BRIQ_PANEL_VFD_IOPORT); /* Function set */
outb(0x01, BRIQ_PANEL_VFD_IOPORT); /* Clear display */
outb(0x0c, BRIQ_PANEL_VFD_IOPORT); /* Display on */
outb(0x06, BRIQ_PANEL_VFD_IOPORT); /* Entry normal */
for (i=0; i<40; i++)
vfd[i]=' ';
#ifndef MODULE
vfd[0] = 'L';
vfd[1] = 'o';
vfd[2] = 'a';
vfd[3] = 'd';
vfd[4] = 'i';
vfd[5] = 'n';
vfd[6] = 'g';
vfd[7] = ' ';
vfd[8] = '.';
vfd[9] = '.';
vfd[10] = '.';
#endif /* !MODULE */
update_vfd();
return 0;
}
static void __exit briq_panel_exit(void)
{
misc_deregister(&briq_panel_miscdev);
release_region(BRIQ_PANEL_VFD_IOPORT, 4);
release_region(BRIQ_PANEL_LED_IOPORT, 2);
}
module_init(briq_panel_init);
module_exit(briq_panel_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Karsten Jeppesen <karsten@jeppesens.com>");
MODULE_DESCRIPTION("Driver for the Total Impact briQ front panel");