[PATCH] ps3: disable display flipping during mode changes

If ps3fb is available, we have to disable display flipping while changing the
audio or video mode.
Signed-off-by: NGeert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: James Simmons <jsimmons@infradead.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/ps3/ps3av_cmd.c

@@ -22,6 +22,7 @@
 #include <linux/kernel.h>
 #include <linux/delay.h>
 #include <asm/ps3av.h>
+#include <asm/ps3fb.h>
 #include <asm/ps3.h>
 
 #include "vuart.h"
@@ -851,8 +852,9 @@ int ps3av_cmd_avb_param(struct ps3av_pkt_avb_param *avb, u32 send_len)
 {
 	int res;
 
-	/* avb packet */
+	ps3fb_flip_ctl(0);	/* flip off */
 
+	/* avb packet */
 	res = ps3av_do_pkt(PS3AV_CID_AVB_PARAM, send_len, sizeof(*avb),
 			   &avb->send_hdr);
 	if (res < 0)
@@ -864,6 +866,7 @@ int ps3av_cmd_avb_param(struct ps3av_pkt_avb_param *avb, u32 send_len)
 			 res);
 
       out:
+	ps3fb_flip_ctl(1);	/* flip on */
 	return res;
 }
 

include/asm-powerpc/ps3fb.h

@@ -41,4 +41,14 @@ struct ps3fb_ioctl_res {
 	__u32 num_frames; /* num of frame buffers */
 };
 
+#ifdef __KERNEL__
+
+#ifdef CONFIG_FB_PS3
+extern void ps3fb_flip_ctl(int on);
+#else
+static inline void ps3fb_flip_ctl(int on) {}
+#endif
+
+#endif /* __KERNEL__ */
+
 #endif /* _ASM_POWERPC_PS3FB_H_ */