fbdev: ssd1307fb: Add blank mode

This patch adds ssd1307fb_blank() to make the framebuffer capable
of blanking.

Signed-off-by: Thomas Niederprüm <niederp@physik.uni-kl.de>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/video/fbdev/ssd1307fb.c b/drivers/video/fbdev/ssd1307fb.c
index 77efed7a42a3..8fc224c99032 100644
--- a/drivers/video/fbdev/ssd1307fb.c
+++ b/drivers/video/fbdev/ssd1307fb.c
@@ -235,6 +235,16 @@ static ssize_t ssd1307fb_write(struct fb_info *info, const char __user *buf,
         return count;
 }
 
+static int ssd1307fb_blank(int blank_mode, struct fb_info *info)
+{
+        struct ssd1307fb_par *par = info->par;
+
+        if (blank_mode != FB_BLANK_UNBLANK)
+                return ssd1307fb_write_cmd(par->client, SSD1307FB_DISPLAY_OFF);
+        else
+                return ssd1307fb_write_cmd(par->client, SSD1307FB_DISPLAY_ON);
+}
+
 static void ssd1307fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
 {
         struct ssd1307fb_par *par = info->par;
@@ -260,6 +270,7 @@ static struct fb_ops ssd1307fb_ops = {
         .owner          = THIS_MODULE,
         .fb_read        = fb_sys_read,
         .fb_write       = ssd1307fb_write,
+        .fb_blank       = ssd1307fb_blank,
         .fb_fillrect    = ssd1307fb_fillrect,
         .fb_copyarea    = ssd1307fb_copyarea,
         .fb_imageblit   = ssd1307fb_imageblit,