[PATCH v2 4/5] media: atmel-isi: setup YCC_SWAP correctly when using preview path

[Josh Wu]

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 
---

Changes in v2:
- remove cfg2_yuv_swap for rgb format
- correct the comment style

 drivers/media/platform/soc_camera/atmel-isi.c | 14 ++
 1 file changed, 14 insertions(+)

diff --git a/drivers/media/platform/soc_camera/atmel-isi.c 
b/drivers/media/platform/soc_camera/atmel-isi.c
index ae82068..826d04e 100644
--- 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;
+   }
}
 
/*
-- 
1.9.1

--
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[PATCH v2 4/5] media: atmel-isi: setup YCC_SWAP correctly when using preview path

[Josh Wu]

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 
---

Changes in v2:
- remove cfg2_yuv_swap for rgb format
- correct the comment style

 drivers/media/platform/soc_camera/atmel-isi.c | 14 ++
 1 file changed, 14 insertions(+)

diff --git a/drivers/media/platform/soc_camera/atmel-isi.c 
b/drivers/media/platform/soc_camera/atmel-isi.c
index ae82068..826d04e 100644
--- 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;
+   }
}
 
/*
-- 
1.9.1

--
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Please read the FAQ at  http://www.tux.org/lkml/