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--- setbrightness.c.orig Tue Dec 12 01:42:20 2000
+++ setbrightness.c Sun Mar 9 18:20:58 2003
@@ -1,20 +1,51 @@
#define _XOPEN_SOURCE 500
+#define __BSD_VISIBLE 1
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
+#ifdef LINUX
#include <sys/io.h>
+#endif
#include <sys/mman.h>
#include <dirent.h>
#include <ctype.h>
+#ifdef LINUX
#include <malloc.h>
+#endif
#include <string.h>
#include <signal.h>
+#ifdef HAVE_GETOPT_H
#include <getopt.h>
+#endif
+#ifdef LINUX
#include <linux/pci.h>
+#endif
#include <sys/time.h>
+#ifdef __FreeBSD__
+#include <machine/cpufunc.h>
+static int deviofd=-1;
+static int iopl(int lvl)
+{
+ if(lvl==0){
+ if(deviofd!=-1){
+ close(deviofd);
+ deviofd=-1;
+ }
+ return 0;
+ }else if(lvl==3){
+ if(deviofd==-1){
+ deviofd=open("/dev/io",0);
+ }
+ return deviofd;
+ }
+ return -1;
+}
+
+#endif
+
#define DATA_REG 0x62
#define CST_REG 0x66
@@ -24,28 +55,35 @@
static void ecr_set(u16 addr, u16 value)
{
while (inw(CST_REG) & 3) usleep(1);
- outw(0x81, CST_REG);
+ outw(CST_REG, 0x81);
while (inw(CST_REG) & 2) usleep(1);
- outw(addr, DATA_REG);
+ outw(DATA_REG, addr);
while (inw(CST_REG) & 2) usleep(1);
- outw(value, DATA_REG);
+ outw(DATA_REG, value);
while (inw(CST_REG) & 2) usleep(1);
}
static u16 ecr_get(u16 addr)
{
while (inw(CST_REG) & 3) usleep(1);
- outb(0x80, CST_REG);
+ outb(CST_REG, 0x80);
while (inw(CST_REG) & 2) usleep(1);
- outb(addr, DATA_REG);
+ outb(DATA_REG, addr);
while (inw(CST_REG) & 2) usleep(1);
return inw(DATA_REG);
}
int main(int argc, char *argv[])
{
+ if(open("/dev/io", O_RDWR, 0) < 0)
+ {
+ perror("/dev/io");
+ return 1;
+ }
iopl(3);
printf("currently %x\n", ecr_get(0x96));
- ecr_set(0x96, atoi(argv[1]));
+ if ( argv[1] != NULL ){
+ ecr_set(0x96, atoi(argv[1]));
+ }
return 0;
}
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