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