fbdev: sh_mobile_lcdc: Add support for format changes at runtime

Implement .fb_set_par to support frame buffer format changes at runtime.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

diff --git a/drivers/video/sh_mobile_lcdcfb.c b/drivers/video/sh_mobile_lcdcfb.c
index 33b0ff83c1542946a40511c952d0f30c3e6e4e06..f9f420d3c4035792df2ac4662bc821de5878aa88 100644 (file)
--- a/drivers/video/sh_mobile_lcdcfb.c
+++ b/drivers/video/sh_mobile_lcdcfb.c
@@ -1154,6 +1154,19 @@ static int sh_mobile_check_var(struct fb_var_screeninfo *var, struct fb_info *in
        return 0;
 }
 
+static int sh_mobile_set_par(struct fb_info *info)
+{
+       struct sh_mobile_lcdc_chan *ch = info->par;
+       int ret;
+
+       sh_mobile_lcdc_stop(ch->lcdc);
+       ret = sh_mobile_lcdc_start(ch->lcdc);
+       if (ret < 0)
+               dev_err(info->dev, "%s: unable to restart LCDC\n", __func__);
+
+       return ret;
+}
+
 /*
  * Screen blanking. Behavior is as follows:
  * FB_BLANK_UNBLANK: screen unblanked, clocks enabled
@@ -1211,6 +1224,7 @@ static struct fb_ops sh_mobile_lcdc_ops = {
        .fb_open        = sh_mobile_open,
        .fb_release     = sh_mobile_release,
        .fb_check_var   = sh_mobile_check_var,
+       .fb_set_par     = sh_mobile_set_par,
 };
 
 static int sh_mobile_lcdc_update_bl(struct backlight_device *bdev)