sh: APM/PM support.

This adds some simple PM stubs and the basic APM interfaces,
primarily for use by hp6xx, where the existing userland
expects it.

Signed-off-by: Andriy Skulysh <askulysh@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 25 insertions, 0 deletions

diff --git a/include/asm-sh/system.h b/include/asm-sh/system.h
index bd7dc0554b11..477422afeb0d 100644
--- a/include/asm-sh/system.h
+++ b/include/asm-sh/system.h
@@ -172,6 +172,31 @@ static __inline__ void local_irq_disable(void)
                              : "memory");
 }
 
+static __inline__ void set_bl_bit(void)
+{
+        unsigned long __dummy0, __dummy1;
+
+        __asm__ __volatile__ ("stc      sr, %0\n\t"
+                             "or        %2, %0\n\t"
+                             "and       %3, %0\n\t"
+                             "ldc       %0, sr"
+                             : "=&r" (__dummy0), "=r" (__dummy1)
+                             : "r" (0x10000000), "r" (0xffffff0f)
+                             : "memory");
+}
+
+static __inline__ void clear_bl_bit(void)
+{
+        unsigned long __dummy0, __dummy1;
+
+        __asm__ __volatile__ ("stc      sr, %0\n\t"
+                             "and       %2, %0\n\t"
+                             "ldc       %0, sr"
+                             : "=&r" (__dummy0), "=r" (__dummy1)
+                             : "1" (~0x10000000)
+                             : "memory");
+}
+
 #define local_save_flags(x) \
         __asm__("stc sr, %0; and #0xf0, %0" : "=&z" (x) :/**/: "memory" )