video: s3c-fb: add runtime_get/put to suspend/resume

This patch adds runtime_get/put to suspend/resume, which should be
necessary to prevent the problem to access the fimd register
without block power on.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

diff --git a/drivers/video/s3c-fb.c b/drivers/video/s3c-fb.c
index 18c84b8..ecb82bb 100644 (file)
--- a/drivers/video/s3c-fb.c
+++ b/drivers/video/s3c-fb.c
@@ -1557,6 +1557,8 @@ static int s3c_fb_suspend(struct device *dev)
        struct s3c_fb_win *win;
        int win_no;
 
+       pm_runtime_get_sync(sfb->dev);
+
        for (win_no = S3C_FB_MAX_WIN - 1; win_no >= 0; win_no--) {
                win = sfb->windows[win_no];
                if (!win)
@@ -1570,6 +1572,9 @@ static int s3c_fb_suspend(struct device *dev)
                clk_disable(sfb->lcd_clk);
 
        clk_disable(sfb->bus_clk);
+
+       pm_runtime_put_sync(sfb->dev);
+
        return 0;
 }
 
@@ -1582,6 +1587,8 @@ static int s3c_fb_resume(struct device *dev)
        int win_no;
        u32 reg;
 
+       pm_runtime_get_sync(sfb->dev);
+
        clk_enable(sfb->bus_clk);
 
        if (!sfb->variant.has_clksel)
@@ -1628,6 +1635,8 @@ static int s3c_fb_resume(struct device *dev)
                s3c_fb_set_par(win->fbinfo);
        }
 
+       pm_runtime_put_sync(sfb->dev);
+
        return 0;
 }
 #endif