From f4092abdf94af6a99aff944d6264bc1284e8bdd4 Mon Sep 17 00:00:00 2001
From: Reinhard Tartler <siretart@tauware.de>
Date: Mon, 10 Oct 2011 17:43:39 +0200
Subject: Imported nx-X11-3.1.0-1.tar.gz

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository
---
 .../Xserver/hw/xfree86/os-support/linux/lnx_acpi.c | 170 +++++++++++++++++++++
 1 file changed, 170 insertions(+)
 create mode 100644 nx-X11/programs/Xserver/hw/xfree86/os-support/linux/lnx_acpi.c

(limited to 'nx-X11/programs/Xserver/hw/xfree86/os-support/linux/lnx_acpi.c')

diff --git a/nx-X11/programs/Xserver/hw/xfree86/os-support/linux/lnx_acpi.c b/nx-X11/programs/Xserver/hw/xfree86/os-support/linux/lnx_acpi.c
new file mode 100644
index 000000000..9d1dea77d
--- /dev/null
+++ b/nx-X11/programs/Xserver/hw/xfree86/os-support/linux/lnx_acpi.c
@@ -0,0 +1,170 @@
+#include "X.h"
+#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_EVENTS  "/proc/acpi/event"
+
+#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	0x82
+#define	ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS	0x83
+#define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS	0x84
+#define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS	0x85
+#define ACPI_VIDEO_NOTIFY_DISPLAY_OFF		0x86
+
+#define ACPI_VIDEO_HEAD_INVALID		(~0u - 1)
+#define ACPI_VIDEO_HEAD_END		(~0u)
+
+static void lnxCloseACPI(void);
+static pointer ACPIihPtr = NULL;
+PMClose lnxACPIOpen(void);
+
+#define LINE_LENGTH 80
+
+static int
+lnxACPIGetEventFromOs(int fd, pmEvent *events, int num)
+{
+    char ev[LINE_LENGTH];
+    int n;
+
+    memset(ev, 0, LINE_LENGTH);
+
+    n = read( fd, ev, LINE_LENGTH );
+
+    /* Check that we have a video event */
+    if (strstr(ev, "video") == ev) {
+	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, "video");
+
+	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
+
+	/* We currently don't differentiate between any event */
+	switch (notify_l) {
+		case ACPI_VIDEO_NOTIFY_SWITCH:
+			break;
+		case ACPI_VIDEO_NOTIFY_PROBE:
+			break;
+		case ACPI_VIDEO_NOTIFY_CYCLE:
+			break;
+		case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT:
+			break;
+		case ACPI_VIDEO_NOTIFY_PREV_OUTPUT:
+			break;
+		default:
+			break;
+	}
+
+	/* Deal with all ACPI events as a capability change */
+        events[0] = XF86_APM_CAPABILITY_CHANGED;
+
+	return 1;
+    }
+    
+    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;
+
+#ifdef DEBUG
+    ErrorF("ACPI: OSPMOpen called\n");
+#endif
+    if (ACPIihPtr || !xf86Info.pmFlag)
+	return NULL;
+   
+#ifdef DEBUG
+    ErrorF("ACPI: Opening device\n");
+#endif
+    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) {
+	    shutdown(fd, 2);
+	    close(fd);
+	    fd = -1;
+	}
+    }
+
+    /* acpid's socket isn't available, so try going direct */
+    if (fd == -1) {
+        if ((fd = open(ACPI_EVENTS, O_RDONLY)) < 0) {
+	    xf86MsgVerb(X_WARNING,3,"Open ACPI failed (%s) (%s)\n", ACPI_EVENTS,
+	    	strerror(errno));
+	    return NULL;
+    	}
+    }
+
+    xf86PMGetEventFromOs = lnxACPIGetEventFromOs;
+    xf86PMConfirmEventToOs = lnxACPIConfirmEventToOs;
+    ACPIihPtr = xf86AddInputHandler(fd,xf86HandlePMEvents,NULL);
+    xf86MsgVerb(X_INFO,3,"Open ACPI successful (%s)\n", (r != -1) ? ACPI_SOCKET : ACPI_EVENTS);
+
+    return lnxCloseACPI;
+}
+
+static void
+lnxCloseACPI(void)
+{
+    int fd;
+    
+#ifdef DEBUG
+   ErrorF("ACPI: Closing device\n");
+#endif
+    if (ACPIihPtr) {
+	fd = xf86RemoveInputHandler(ACPIihPtr);
+	shutdown(fd, 2);
+	close(fd);
+	ACPIihPtr = NULL;
+    }
+}
+
-- 
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