[media] V4L2: sh_mobile_ceu: manage lower 8bit bus

CAMCR::DTIF feild controls camera bus as upper8bit/16bit/lower8bit.
This patch manages unmanaged lower 8bit bus

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

2 files changed, 6 insertions, 3 deletions

diff --git a/drivers/media/video/sh_mobile_ceu_camera.c b/drivers/media/video/sh_mobile_ceu_camera.c
index 61f7f91de931..0baaf94db7e0 100644
--- a/drivers/media/video/sh_mobile_ceu_camera.c
+++ b/drivers/media/video/sh_mobile_ceu_camera.c
@@ -870,11 +870,13 @@ static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd)
 
         value |= common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW ? 1 << 1 : 0;
         value |= common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW ? 1 << 0 : 0;
-        value |= pcdev->is_16bit ? 1 << 12 : 0;
 
-        /* CSI2 mode */
-        if (pcdev->pdata->csi2)
+        if (pcdev->pdata->csi2) /* CSI2 mode */
                 value |= 3 << 12;
+        else if (pcdev->is_16bit)
+                value |= 1 << 12;
+        else if (pcdev->pdata->flags & SH_CEU_FLAG_LOWER_8BIT)
+                value |= 2 << 12;
 
         ceu_write(pcdev, CAMCR, value);
 
diff --git a/include/media/sh_mobile_ceu.h b/include/media/sh_mobile_ceu.h
index a90a765f18da..6fdb6adf6b2b 100644
--- a/include/media/sh_mobile_ceu.h
+++ b/include/media/sh_mobile_ceu.h
@@ -5,6 +5,7 @@
 #define SH_CEU_FLAG_USE_16BIT_BUS       (1 << 1) /* use 16bit bus width */
 #define SH_CEU_FLAG_HSYNC_LOW           (1 << 2) /* default High if possible */
 #define SH_CEU_FLAG_VSYNC_LOW           (1 << 3) /* default High if possible */
+#define SH_CEU_FLAG_LOWER_8BIT          (1 << 4) /* default upper 8bit */
 
 struct device;
 struct resource;