s3c-fb: add default window feature.

s5pv210 has five window layers (window0 ~ 4), among them, window0 ~ 2
could be used for local path with fimc(capture device) and fimd writeback
feature so this patch makes default window layer for UI to be set at
machine code.

Signed-off-by: InKi Dae <inki.dae@samsung.com>
Reviewed-by: KyungMin Park <kyungmin.park.samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Pawel Osciak <p.osciak@samsung.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 6 insertions, 3 deletions

diff --git a/arch/arm/plat-samsung/include/plat/fb.h b/arch/arm/plat-samsung/include/plat/fb.h
index 27d3b497b55b..cb3ca3adc685 100644
--- a/arch/arm/plat-samsung/include/plat/fb.h
+++ b/arch/arm/plat-samsung/include/plat/fb.h
@@ -42,6 +42,7 @@ struct s3c_fb_pd_win {
  * @setup_gpio: Setup the external GPIO pins to the right state to transfer
  *              the data from the display system to the connected display
  *              device.
+ * @default_win: default window layer number to be used for UI layer.
  * @vidcon0: The base vidcon0 values to control the panel data format.
  * @vidcon1: The base vidcon1 values to control the panel data output.
  * @win: The setup data for each hardware window, or NULL for unused.
@@ -58,6 +59,8 @@ struct s3c_fb_platdata {
 
         struct s3c_fb_pd_win    *win[S3C_FB_MAX_WIN];
 
+        u32                      default_win;
+
         u32                      vidcon0;
         u32                      vidcon1;
 };
diff --git a/drivers/video/s3c-fb.c b/drivers/video/s3c-fb.c
index 9682ecc60e12..c4639c4e62f2 100644
--- a/drivers/video/s3c-fb.c
+++ b/drivers/video/s3c-fb.c
@@ -300,9 +300,9 @@ static int s3c_fb_set_par(struct fb_info *info)
         /* disable the window whilst we update it */
         writel(0, regs + WINCON(win_no));
 
-        /* use window 0 as the basis for the lcd output timings */
+        /* use platform specified window as the basis for the lcd timings */
 
-        if (win_no == 0) {
+        if (win_no == sfb->pdata->default_win) {
                 clkdiv = s3c_fb_calc_pixclk(sfb, var->pixclock);
 
                 data = sfb->pdata->vidcon0;
@@ -636,7 +636,7 @@ static int s3c_fb_blank(int blank_mode, struct fb_info *info)
         /* we're stuck with this until we can do something about overriding
          * the power control using the blanking event for a single fb.
          */
-        if (index == 0)
+        if (index == sfb->pdata->default_win)
                 s3c_fb_enable(sfb, blank_mode != FB_BLANK_POWERDOWN ? 1 : 0);
 
         return 0;