Index: lib/access.c
===================================================================
--- lib/access.c	(revision 5577)
+++ lib/access.c	(working copy)
@@ -349,6 +349,8 @@
 		return "SPI adapter";
 	case SENSORS_BUS_TYPE_VIRTUAL:
 		return "Virtual device";
+	case SENSORS_BUS_TYPE_ACPI:
+		return "ACPI interface";
 	}
 
 	/* bus types with several instances */
Index: lib/sensors.h
===================================================================
--- lib/sensors.h	(revision 5577)
+++ lib/sensors.h	(working copy)
@@ -42,6 +42,7 @@
 #define SENSORS_BUS_TYPE_PCI		2
 #define SENSORS_BUS_TYPE_SPI		3
 #define SENSORS_BUS_TYPE_VIRTUAL	4
+#define SENSORS_BUS_TYPE_ACPI		5
 #define SENSORS_BUS_NR_ANY		(-1)
 #define SENSORS_BUS_NR_IGNORE		(-2)
 
Index: lib/sysfs.c
===================================================================
--- lib/sysfs.c	(revision 5577)
+++ lib/sysfs.c	(working copy)
@@ -596,6 +596,11 @@
 			entry.chip.addr = 0;
 		entry.chip.bus.type = SENSORS_BUS_TYPE_ISA;
 		entry.chip.bus.nr = 0;
+	} else if (subsys && !strcmp(subsys, "acpi")) {
+		entry.chip.bus.type = SENSORS_BUS_TYPE_ACPI;
+		/* For now we assume that acpi devices are unique */
+		entry.chip.bus.nr = 0;
+		entry.chip.addr = 0;
 	} else {
 		/* Ignore unknown device */
 		err = 0;
Index: lib/data.c
===================================================================
--- lib/data.c	(revision 5577)
+++ lib/data.c	(working copy)
@@ -111,6 +111,8 @@
 		res->bus.type = SENSORS_BUS_TYPE_SPI;
 	else if (!strncmp(name, "virtual", dash - name))
 		res->bus.type = SENSORS_BUS_TYPE_VIRTUAL;
+	else if (!strncmp(name, "acpi", dash - name))
+		res->bus.type = SENSORS_BUS_TYPE_ACPI;
 	else
 		goto ERROR;
 	name = dash + 1;
@@ -174,6 +176,9 @@
 	case SENSORS_BUS_TYPE_VIRTUAL:
 		return snprintf(str, size, "%s-virtual-%x", chip->prefix,
 				chip->addr);
+	case SENSORS_BUS_TYPE_ACPI:
+		return snprintf(str, size, "%s-acpi-%x", chip->prefix,
+				chip->addr);
 	}
 
 	return -SENSORS_ERR_CHIP_NAME;