fbdev: sh_mobile_lcdc: reconfigure the framebuffer, when free
Currently the sh_mobile_lcdc driver only reconfigures the hardware interface,
when a new monitor is plugged in. This patch adds support for dynamic
framebuffer reconfiguration, when no user is holding the framebuffer device
node open.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/drivers/video/sh_mobile_lcdcfb.h b/drivers/video/sh_mobile_lcdcfb.h
index dfd3d76..9ecee2f 100644
--- a/drivers/video/sh_mobile_lcdcfb.h
+++ b/drivers/video/sh_mobile_lcdcfb.h
@@ -3,6 +3,7 @@
#include <linux/completion.h>
#include <linux/fb.h>
+#include <linux/mutex.h>
#include <linux/wait.h>
/* per-channel registers */
@@ -33,6 +34,8 @@
wait_queue_head_t frame_end_wait;
struct completion vsync_completion;
struct fb_var_screeninfo display_var;
+ int use_count;
+ struct mutex open_lock; /* protects the use counter */
};
#endif