[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: Geert Uytterhoeven <[e-mail]>
Cc: James Simmons <[e-mail]>
Cc: Benjamin Herrenschmidt <[e-mail]>
Cc: Paul Mackerras <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/ps3/ps3av_cmd.c

···
 #include <linux/kernel.h>
 #include <linux/delay.h>
 #include <asm/ps3av.h>
+#include <asm/ps3fb.h>
 #include <asm/ps3.h>
 
 #include "vuart.h"
···
 {
 	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)
···
 			 res);
 
       out:
+	ps3fb_flip_ctl(1);	/* flip on */
 	return res;
 }
 

include/asm-powerpc/ps3fb.h

···
 	__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_ */