diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index 1b8b333..60de16a 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -60,6 +60,19 @@
 	150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
 };
 
+/* extended mapping for certain Logitech hardware (Logitech cordless desktop LX500) */
+#define LOGITECH_EXPANDED_KEYMAP_SIZE 80
+static int logitech_expanded_keymap[LOGITECH_EXPANDED_KEYMAP_SIZE] = {
+	  0,216,  0,213,175,156,  0,  0,  0,  0,
+	144,  0,  0,  0,  0,  0,  0,  0,  0,212,
+	174,167,152,161,112,  0,  0,  0,154,  0,
+	  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+	  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+	  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+	  0,  0,  0,  0,  0,183,184,185,186,187,
+	188,189,190,191,192,193,194,  0,  0,  0
+};
+
 static const struct {
 	__s32 x;
 	__s32 y;
@@ -378,6 +391,21 @@
 					}
 			}
 
+			/* Special handling for Logitech Cordless Desktop */
+			if (field->application != HID_GD_MOUSE) {
+				if (device->quirks & HID_QUIRK_LOGITECH_EXPANDED_KEYMAP) {
+					int hid = usage->hid & HID_USAGE;
+					if (hid < LOGITECH_EXPANDED_KEYMAP_SIZE && logitech_expanded_keymap[hid] != 0)
+						code = logitech_expanded_keymap[hid];
+				}
+			} else {
+				if (device->quirks & HID_QUIRK_LOGITECH_IGNORE_DOUBLED_WHEEL) {
+					int hid = usage->hid & HID_USAGE;
+					if (hid == 7 || hid == 8)
+						goto ignore;
+				}
+			}
+
 			map_key(code);
 			break;