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Subject[PATCH v5 7/7] media: imx: Allow BT.709 encoding for IC routes
Date
The IC now supports BT.709 Y'CbCr encoding, in addition to existing BT.601
encoding, so allow both, for pipelines that route through the IC.

Reported-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
---
Changes in v5:
- rebased this patch on top of repurposing the function to
imx_media_try_colorimetry().
Changes in v2:
- move ic_route check above default colorimetry checks, and fill default
colorimetry for ic_route, otherwise it's not possible to set BT.709
encoding for ic routes.
---
drivers/staging/media/imx/imx-media-utils.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/media/imx/imx-media-utils.c b/drivers/staging/media/imx/imx-media-utils.c
index aa7d4be77a7e..12967d6d7e1a 100644
--- a/drivers/staging/media/imx/imx-media-utils.c
+++ b/drivers/staging/media/imx/imx-media-utils.c
@@ -524,7 +524,7 @@ EXPORT_SYMBOL_GPL(imx_media_init_cfg);
* If this format is destined to be routed through the Image Converter,
* quantization and Y`CbCr encoding must be fixed. The IC supports only
* full-range quantization for RGB at its input and output, and only
- * BT.601 Y`CbCr encoding.
+ * BT.601 or Rec.709 Y`CbCr encoding.
*/
void imx_media_try_colorimetry(struct v4l2_mbus_framefmt *tryfmt,
bool ic_route)
@@ -563,7 +563,9 @@ void imx_media_try_colorimetry(struct v4l2_mbus_framefmt *tryfmt,
tryfmt->quantization == V4L2_QUANTIZATION_DEFAULT)
tryfmt->quantization = V4L2_QUANTIZATION_FULL_RANGE;

- tryfmt->ycbcr_enc = V4L2_YCBCR_ENC_601;
+ if (tryfmt->ycbcr_enc != V4L2_YCBCR_ENC_601 &&
+ tryfmt->ycbcr_enc != V4L2_YCBCR_ENC_709)
+ tryfmt->ycbcr_enc = V4L2_YCBCR_ENC_601;
} else {
if (tryfmt->ycbcr_enc == V4L2_YCBCR_ENC_DEFAULT) {
tryfmt->ycbcr_enc =
--
2.17.1
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