[media] atmel-isi: setup YCC_SWAP correctly when using preview path

The preview path only can convert UYVY format to RGB data.

To make preview path work correctly, we need to set up YCC_SWAP
according to sensor output and convert them to UYVY.

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/platform/soc_camera/atmel-isi.c b/drivers/media/platform/soc_camera/atmel-isi.c
index 22ae4c814fad1c7c080fc91522c569d99037cdbe..b70754f496f089e59c6d1c16eb01db54e60c3df9 100644 (file)
--- a/drivers/media/platform/soc_camera/atmel-isi.c
+++ b/drivers/media/platform/soc_camera/atmel-isi.c
@@ -117,6 +117,20 @@ static u32 setup_cfg2_yuv_swap(struct atmel_isi *isi,
                case MEDIA_BUS_FMT_YVYU8_2X8:
                        return ISI_CFG2_YCC_SWAP_MODE_1;
                }
+       } else if (xlate->host_fmt->fourcc == V4L2_PIX_FMT_RGB565) {
+               /*
+                * Preview path is enabled, it will convert UYVY to RGB format.
+                * But if sensor output format is not UYVY, we need to set
+                * YCC_SWAP_MODE to convert it as UYVY.
+                */
+               switch (xlate->code) {
+               case MEDIA_BUS_FMT_VYUY8_2X8:
+                       return ISI_CFG2_YCC_SWAP_MODE_1;
+               case MEDIA_BUS_FMT_YUYV8_2X8:
+                       return ISI_CFG2_YCC_SWAP_MODE_2;
+               case MEDIA_BUS_FMT_YVYU8_2X8:
+                       return ISI_CFG2_YCC_SWAP_MODE_3;
+               }
        }
 
        /*