Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   Steve Longerbeam <slongerbeam@gmail.com>
To:     linux-media@vger.kernel.org
Cc:     Tim Harvey <tharvey@gateworks.com>,
        Steve Longerbeam <slongerbeam@gmail.com>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        devel@driverdev.osuosl.org (open list:STAGING SUBSYSTEM),
        linux-kernel@vger.kernel.org (open list)
Subject: [PATCH v6 7/7] media: imx: Allow BT.709 encoding for IC routes
Date:   Thu,  7 Mar 2019 15:33:56 -0800
Message-Id: <20190307233356.23748-8-slongerbeam@gmail.com>
In-Reply-To: <20190307233356.23748-1-slongerbeam@gmail.com>
References: <20190307233356.23748-1-slongerbeam@gmail.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

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