diff -ur nvclock/src/backend/nv40.c nvclock/src/backend/nv40.c
--- nvclock/src/backend/nv40.c	2008-12-13 07:52:54.000000000 +1100
+++ nvclock/src/backend/nv40.c	2008-12-30 13:58:18.818085500 +1100
@@ -430,6 +430,29 @@
 	nv_card->PMC[0x15f0/4] = (level << 16) | (nv_card->PMC[0x15f0/4] & 0xffe0ffff);
 }
 
+/* Fade backpanel brightness on laptops */
+void nv44_mobile_fade_smartdimmer(int end, unsigned long delay)
+{
+	int i, start = nv_card->get_smartdimmer();
+
+	if (end < 15)
+		end = 15;
+	if (end > 100)
+		end = 100;
+
+	if (end >= start) {
+		for (i = start + 1; i <= end; i++) {
+			nv_card->set_smartdimmer(i);
+			usleep(delay);
+		}
+	} else {
+		for (i = start - 1; i >= end; i--) {
+			nv_card->set_smartdimmer(i);
+			usleep(delay);
+		}
+	}
+}
+
 static int CalcSpeed_nv40(int base_freq, int m1, int m2, int n1, int n2, int p)
 {
 	return (int)((float)(n1*n2)/(m1*m2) * base_freq) >> p;
@@ -1022,6 +1045,7 @@
 		nv_card->caps |= SMARTDIMMER;
 		nv_card->get_smartdimmer = nv44_mobile_get_smartdimmer;
 		nv_card->set_smartdimmer = nv44_mobile_set_smartdimmer;
+		nv_card->fade_smartdimmer = nv44_mobile_fade_smartdimmer;
 	}
 	
 	/* Temperature monitoring; all cards after the NV40 feature an internal temperature sensor.
diff -ur nvclock/src/backend/nv50.c nvclock/src/backend/nv50.c
--- nvclock/src/backend/nv50.c	2008-12-29 21:30:05.000000000 +1100
+++ nvclock/src/backend/nv50.c	2008-12-30 13:59:26.123672572 +1100
@@ -253,6 +253,28 @@
 	nv_card->PDISPLAY[NV_PDISPLAY_SOR0_REGS_BRIGHTNESS/4] = val;
 }
 
+/* Fade backpanel brightness on laptops */
+void nv50_mobile_fade_smartdimmer(int end, unsigned long delay) {
+	int i, start = nv_card->get_smartdimmer();
+
+	if (end < 15)
+		end = 15;
+	if (end > 100)
+		end = 100;
+
+	if (end >= start) {
+		for (i = start + 1; i <= end; i++) {
+			nv_card->set_smartdimmer(i);
+			usleep(delay);
+		}
+	} else {
+		for (i = start - 1; i >= end; i--) {
+			nv_card->set_smartdimmer(i);
+			usleep(delay);
+		}
+	}
+}
+
 static int CalcSpeed_nv50(int base_freq, int m1, int m2, int n1, int n2, int p)
 {
 	return (int)((float)(n1*n2)/(m1*m2) * base_freq) >> p;
@@ -414,6 +436,7 @@
 		nv_card->caps |= SMARTDIMMER;
 		nv_card->get_smartdimmer = nv50_mobile_get_smartdimmer;
 		nv_card->set_smartdimmer = nv50_mobile_set_smartdimmer;
+		nv_card->fade_smartdimmer = nv50_mobile_fade_smartdimmer;
 	}
 
 	/* Temperature monitoring; all NV50 cards feature an internal temperature sensor
diff -ur nvclock/src/backend/nvclock.h nvclock/src/backend/nvclock.h
--- nvclock/src/backend/nvclock.h	2008-12-29 04:56:13.000000000 +1100
+++ nvclock/src/backend/nvclock.h	2008-12-30 13:31:32.608727690 +1100
@@ -280,6 +280,7 @@
 	/* Smartdimmer (adjustment of the brigthenss of the backlight on Laptops) */
 	int (*get_smartdimmer)();
 	void (*set_smartdimmer)(int level);
+	void (*fade_smartdimmer)(int level, unsigned long delay);
 
 	/* Overclocking */
 	volatile unsigned int mpll; /* default memory speed */
diff -ur nvclock/src/smartdimmer.c nvclock/src/smartdimmer.c
--- nvclock/src/smartdimmer.c	2008-12-17 08:38:26.000000000 +1100
+++ nvclock/src/smartdimmer.c	2008-12-30 14:08:30.725681893 +1100
@@ -45,10 +45,14 @@
 #define GET_BIT    2
 #define INC_BIT    4
 #define DEC_BIT    8
+#define FAD_BIT    16
+#define DEL_BIT    32
 
 static struct option long_opts[] = {
     { "get"     , no_argument      , 0, 'g' },
     { "set"     , required_argument, 0, 's' },
+    { "fade"    , required_argument, 0, 'f' },
+    { "delay"   , required_argument, 0, 'e' },
     { "increase", no_argument      , 0, 'i' },
     { "decrease", no_argument      , 0, 'd' },
     { "help"    , no_argument      , 0, 'h' },
@@ -62,6 +66,8 @@
     printf("Options:\n");
     printf("\t-g  --get\t\tQuery brightness level.\n");
     printf("\t-s  --set <level>\tSet brightness level (15-100)\n");
+    printf("\t-f  --fade <level>\tFade in/out to brightness level (15-100)\n");
+    printf("\t-e  --delay <level>\tFade cycle delay (usecs)\n");
     printf("\t-i  --increase\t\tIncrease brightness with one level.\n");
     printf("\t-d  --decrease\t\tDecrease brightness with one level.\n");
     printf("\t-h  --help\t\tPrints this help text.\n\n");
@@ -83,6 +89,7 @@
 {   
     int optind = 0, options = 0, setvalue = 0;
     int c;
+	unsigned long delay = 7000;
     
     if (argc < 2)
     {
@@ -90,7 +97,7 @@
         return 0;
     }
     
-    while ((c = getopt_long(argc, argv, "gs:idh", long_opts, &optind)) != -1)
+    while ((c = getopt_long(argc, argv, "gs:f:e:idh", long_opts, &optind)) != -1)
     {
         switch (c)
         {
@@ -113,6 +120,26 @@
                    return 1;
                }
                break;
+            case 'f':
+               if (isdigit(*optarg)) {
+                   setvalue = atoi(optarg);
+                   options |= FAD_BIT;
+               } else {
+                   fprintf(stderr, "Illegal option value (-f): "
+                           "Value has to be a non-negative number.\n");
+                   return 1;
+               }
+               break;
+            case 'e':
+               if (isdigit(*optarg)) {
+                   delay = atoi(optarg);
+                   options |= DEL_BIT;
+               } else {
+                   fprintf(stderr, "Illegal option value (-d): "
+                           "Value has to be a non-negative number.\n");
+                   return 1;
+               }
+               break;
             case 'i':
                options |= INC_BIT;
                break;
@@ -154,6 +181,9 @@
     if (options & SET_BIT)
         nv_card->set_smartdimmer(setvalue);
     
+    if (options & FAD_BIT)
+        nv_card->fade_smartdimmer(setvalue, delay);
+
     if (options & GET_BIT)
         printf("SmartDimmer level: %d\n", nv_card->get_smartdimmer());