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/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/lnx_apm.c,v 3.12 2001/12/24 22:54:31 dawes Exp $ */
#include <X11/X.h>
#include <X11/os.h>
#include "xf86.h"
#include "xf86Priv.h"
#define XF86_OS_PRIVS
#include "xf86_OSproc.h"
#include "lnx.h"
#include <linux/apm_bios.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#define APM_PROC "/proc/apm"
#define APM_DEVICE "/dev/apm_bios"
#ifndef APM_STANDBY_FAILED
# define APM_STANDBY_FAILED 0xf000
#endif
#ifndef APM_SUSPEND_FAILED
# define APM_SUSPEND_FAILED 0xf001
#endif
static void lnxCloseAPM(void);
static pointer APMihPtr = NULL;
static struct {
apm_event_t apmLinux;
pmEvent xf86;
} LinuxToXF86[] = {
{ APM_SYS_STANDBY, XF86_APM_SYS_STANDBY },
{ APM_SYS_SUSPEND, XF86_APM_SYS_SUSPEND },
{ APM_NORMAL_RESUME, XF86_APM_NORMAL_RESUME },
{ APM_CRITICAL_RESUME, XF86_APM_CRITICAL_RESUME },
{ APM_LOW_BATTERY, XF86_APM_LOW_BATTERY },
{ APM_POWER_STATUS_CHANGE, XF86_APM_POWER_STATUS_CHANGE },
{ APM_UPDATE_TIME, XF86_APM_UPDATE_TIME },
{ APM_CRITICAL_SUSPEND, XF86_APM_CRITICAL_SUSPEND },
{ APM_USER_STANDBY, XF86_APM_USER_STANDBY },
{ APM_USER_SUSPEND, XF86_APM_USER_SUSPEND },
{ APM_STANDBY_RESUME, XF86_APM_STANDBY_RESUME },
#if defined(APM_CAPABILITY_CHANGED)
{ APM_CAPABILITY_CHANGED, XF86_CAPABILITY_CHANGED },
#endif
#if 0
{ APM_STANDBY_FAILED, XF86_APM_STANDBY_FAILED },
{ APM_SUSPEND_FAILED, XF86_APM_SUSPEND_FAILED }
#endif
};
#define numApmEvents (sizeof(LinuxToXF86) / sizeof(LinuxToXF86[0]))
/*
* APM is still under construction.
* I'm not sure if the places where I initialize/deinitialize
* apm is correct. Also I don't know what to do in SETUP state.
* This depends if wakeup gets called in this situation, too.
* Also we need to check if the action that is taken on an
* event is reasonable.
*/
static int
lnxPMGetEventFromOs(int fd, pmEvent *events, int num)
{
int i,j,n;
apm_event_t linuxEvents[8];
if ((n = read( fd, linuxEvents, num * sizeof(apm_event_t) )) == -1)
return 0;
n /= sizeof(apm_event_t);
if (n > num)
n = num;
for (i = 0; i < n; i++) {
for (j = 0; j < numApmEvents; j++)
if (LinuxToXF86[j].apmLinux == linuxEvents[i]) {
events[i] = LinuxToXF86[j].xf86;
break;
}
if (j == numApmEvents)
events[i] = XF86_APM_UNKNOWN;
}
return n;
}
static pmWait
lnxPMConfirmEventToOs(int fd, pmEvent event)
{
switch (event) {
case XF86_APM_SYS_STANDBY:
case XF86_APM_USER_STANDBY:
if (ioctl( fd, APM_IOC_STANDBY, NULL ))
return PM_FAILED;
return PM_CONTINUE;
case XF86_APM_SYS_SUSPEND:
case XF86_APM_CRITICAL_SUSPEND:
case XF86_APM_USER_SUSPEND:
if (ioctl( fd, APM_IOC_SUSPEND, NULL )) {
/* I believe this is wrong (EE)
EBUSY is sent when a device refuses to be suspended.
In this case we still need to undo everything we have
done to suspend ourselves or we will stay in suspended
state forever. */
if (errno == EBUSY)
return PM_CONTINUE;
else
return PM_FAILED;
}
return PM_CONTINUE;
case XF86_APM_STANDBY_RESUME:
case XF86_APM_NORMAL_RESUME:
case XF86_APM_CRITICAL_RESUME:
case XF86_APM_STANDBY_FAILED:
case XF86_APM_SUSPEND_FAILED:
return PM_CONTINUE;
default:
return PM_NONE;
}
}
PMClose
xf86OSPMOpen(void)
{
int fd, pfd;
#ifdef DEBUG
ErrorF("APM: OSPMOpen called\n");
#endif
if (APMihPtr || !xf86Info.pmFlag)
return NULL;
#ifdef DEBUG
ErrorF("APM: Opening device\n");
#endif
if ((fd = open( APM_DEVICE, O_RDWR )) > -1) {
if (access( APM_PROC, R_OK ) ||
((pfd = open( APM_PROC, O_RDONLY)) == -1)) {
xf86MsgVerb(X_WARNING,3,"Cannot open APM (%s) (%s)\n",
APM_PROC, strerror(errno));
close(fd);
return NULL;
} else
close(pfd);
xf86PMGetEventFromOs = lnxPMGetEventFromOs;
xf86PMConfirmEventToOs = lnxPMConfirmEventToOs;
APMihPtr = xf86AddInputHandler(fd,xf86HandlePMEvents,NULL);
xf86MsgVerb(X_INFO,3,"Open APM successful\n");
return lnxCloseAPM;
}
xf86MsgVerb(X_INFO,3,"No APM support in BIOS or kernel\n");
return NULL;
}
static void
lnxCloseAPM(void)
{
int fd;
#ifdef DEBUG
ErrorF("APM: Closing device\n");
#endif
if (APMihPtr) {
fd = xf86RemoveInputHandler(APMihPtr);
close(fd);
APMihPtr = NULL;
}
}
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