MIPS: cpuidle wait instruction state

Defines a macro intended to allow trivial use of the regular MIPS wait
instruction from cpuidle drivers, which may simply invoke the macro
within their array of states.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/arch/mips/include/asm/idle.h b/arch/mips/include/asm/idle.h
index d192158886b1..d9f932de80e9 100644
--- a/arch/mips/include/asm/idle.h
+++ b/arch/mips/include/asm/idle.h
@@ -1,6 +1,7 @@
 #ifndef __ASM_IDLE_H
 #define __ASM_IDLE_H
 
+#include <linux/cpuidle.h>
 #include <linux/linkage.h>
 
 extern void (*cpu_wait)(void);
@@ -20,4 +21,17 @@ static inline int address_is_in_r4k_wait_irqoff(unsigned long addr)
                addr < (unsigned long)__pastwait;
 }
 
+extern int mips_cpuidle_wait_enter(struct cpuidle_device *dev,
+                                   struct cpuidle_driver *drv, int index);
+
+#define MIPS_CPUIDLE_WAIT_STATE {\
+        .enter                  = mips_cpuidle_wait_enter,\
+        .exit_latency           = 1,\
+        .target_residency       = 1,\
+        .power_usage            = UINT_MAX,\
+        .flags                  = CPUIDLE_FLAG_TIME_VALID,\
+        .name                   = "wait",\
+        .desc                   = "MIPS wait",\
+}
+
 #endif /* __ASM_IDLE_H  */