diff --git a/include/lib/mmio.h b/include/lib/mmio.h
index cb37a1c..19f798f 100644
--- a/include/lib/mmio.h
+++ b/include/lib/mmio.h
@@ -43,6 +43,16 @@
 	return *(volatile uint8_t*)addr;
 }
 
+static inline void mmio_write_16(uintptr_t addr, uint16_t value)
+{
+	*(volatile uint16_t*)addr = value;
+}
+
+static inline uint16_t mmio_read_16(uintptr_t addr)
+{
+	return *(volatile uint16_t*)addr;
+}
+
 static inline void mmio_write_32(uintptr_t addr, uint32_t value)
 {
 	*(volatile uint32_t*)addr = value;
@@ -63,4 +73,21 @@
 	return *(volatile uint64_t*)addr;
 }
 
+static inline void mmio_clrbits_32(uintptr_t addr, uint32_t clear)
+{
+	mmio_write_32(addr, mmio_read_32(addr) & ~clear);
+}
+
+static inline void mmio_setbits_32(uintptr_t addr, uint32_t set)
+{
+	mmio_write_32(addr, mmio_read_32(addr) | set);
+}
+
+static inline void mmio_clrsetbits_32(uintptr_t addr,
+				uint32_t clear,
+				uint32_t set)
+{
+	mmio_write_32(addr, (mmio_read_32(addr) & ~clear) | set);
+}
+
 #endif /* __MMIO_H__ */