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#ifdef HAVE_XORG_CONFIG_H
#include "xorg-config.h"
#endif
#include "os.h"
#include "xf86.h"
#include "xf86Priv.h"
#define XF86_OS_PRIVS
#include "xf86_OSproc.h"
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#define ACPI_SOCKET "/var/run/acpid.socket"
#define ACPI_VIDEO_NOTIFY_SWITCH 0x80
#define ACPI_VIDEO_NOTIFY_PROBE 0x81
#define ACPI_VIDEO_NOTIFY_CYCLE 0x82
#define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT 0x83
#define ACPI_VIDEO_NOTIFY_PREV_OUTPUT 0x84
#define ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS 0x85
#define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x86
#define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x87
#define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS 0x88
#define ACPI_VIDEO_NOTIFY_DISPLAY_OFF 0x89
#define ACPI_VIDEO_HEAD_INVALID (~0u - 1)
#define ACPI_VIDEO_HEAD_END (~0u)
static void lnxCloseACPI(void);
static pointer ACPIihPtr = NULL;
PMClose lnxACPIOpen(void);
/* in milliseconds */
#define ACPI_REOPEN_DELAY 1000
static CARD32
lnxACPIReopen(OsTimerPtr timer, CARD32 time, pointer arg)
{
if (lnxACPIOpen()) {
TimerFree(timer);
return 0;
}
return ACPI_REOPEN_DELAY;
}
#define LINE_LENGTH 80
static int
lnxACPIGetEventFromOs(int fd, pmEvent * events, int num)
{
char ev[LINE_LENGTH];
int n;
memset(ev, 0, LINE_LENGTH);
do {
n = read(fd, ev, LINE_LENGTH);
} while ((n == -1) && (errno == EAGAIN || errno == EINTR));
if (n <= 0) {
lnxCloseACPI();
TimerSet(NULL, 0, ACPI_REOPEN_DELAY, lnxACPIReopen, NULL);
return 0;
}
/* FIXME: this only processes the first read ACPI event & might break
* with interrupted reads. */
/* Check that we have a video event */
if (!strncmp(ev, "video", 5)) {
char *video = NULL;
char *GFX = NULL;
char *notify = NULL;
char *data = NULL; /* doesn't appear to be used in the kernel */
unsigned long int notify_l, data_l;
video = strtok(ev, " ");
GFX = strtok(NULL, " ");
#if 0
ErrorF("GFX: %s\n", GFX);
#endif
notify = strtok(NULL, " ");
notify_l = strtoul(notify, NULL, 16);
#if 0
ErrorF("notify: 0x%lx\n", notify_l);
#endif
data = strtok(NULL, " ");
data_l = strtoul(data, NULL, 16);
#if 0
ErrorF("data: 0x%lx\n", data_l);
#endif
/* Differentiate between events */
switch (notify_l) {
case ACPI_VIDEO_NOTIFY_SWITCH:
case ACPI_VIDEO_NOTIFY_CYCLE:
case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT:
case ACPI_VIDEO_NOTIFY_PREV_OUTPUT:
events[0] = XF86_APM_CAPABILITY_CHANGED;
return 1;
case ACPI_VIDEO_NOTIFY_PROBE:
return 0;
default:
return 0;
}
}
return 0;
}
static pmWait
lnxACPIConfirmEventToOs(int fd, pmEvent event)
{
/* No ability to send back to the kernel in ACPI */
switch (event) {
default:
return PM_NONE;
}
}
PMClose
lnxACPIOpen(void)
{
int fd;
struct sockaddr_un addr;
int r = -1;
static int warned = 0;
DebugF("ACPI: OSPMOpen called\n");
if (ACPIihPtr || !xf86Info.pmFlag)
return NULL;
DebugF("ACPI: Opening device\n");
if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) > -1) {
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
strcpy(addr.sun_path, ACPI_SOCKET);
if ((r = connect(fd, (struct sockaddr *) &addr, sizeof(addr))) == -1) {
if (!warned)
xf86MsgVerb(X_WARNING, 3, "Open ACPI failed (%s) (%s)\n",
ACPI_SOCKET, strerror(errno));
warned = 1;
shutdown(fd, 2);
close(fd);
return NULL;
}
}
xf86PMGetEventFromOs = lnxACPIGetEventFromOs;
xf86PMConfirmEventToOs = lnxACPIConfirmEventToOs;
ACPIihPtr = xf86AddGeneralHandler(fd, xf86HandlePMEvents, NULL);
xf86MsgVerb(X_INFO, 3, "Open ACPI successful (%s)\n", ACPI_SOCKET);
warned = 0;
return lnxCloseACPI;
}
static void
lnxCloseACPI(void)
{
int fd;
DebugF("ACPI: Closing device\n");
if (ACPIihPtr) {
fd = xf86RemoveGeneralHandler(ACPIihPtr);
shutdown(fd, 2);
close(fd);
ACPIihPtr = NULL;
}
}
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