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[98.210.181.167]) by smtp.googlemail.com with ESMTPSA id h19sm97030004pfn.114.2019.01.09.10.16.57 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 09 Jan 2019 10:16:58 -0800 (PST) From: Steve Longerbeam To: linux-media@vger.kernel.org Cc: Steve Longerbeam , Philipp Zabel , Mauro Carvalho Chehab , Greg Kroah-Hartman , devel@driverdev.osuosl.org (open list:STAGING SUBSYSTEM), linux-kernel@vger.kernel.org (open list) Subject: [PATCH v7 06/11] media: imx: interweave and odd-chroma-row skip are incompatible Date: Wed, 9 Jan 2019 10:16:36 -0800 Message-Id: <20190109181642.19378-7-slongerbeam@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190109181642.19378-1-slongerbeam@gmail.com> References: <20190109181642.19378-1-slongerbeam@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If IDMAC interweaving is enabled in a write channel, the channel must write the odd chroma rows for 4:2:0 formats. Skipping writing the odd chroma rows produces corrupted captured 4:2:0 images when interweave is enabled. Reported-by: Krzysztof Hałasa Signed-off-by: Steve Longerbeam Reviewed-by: Philipp Zabel --- drivers/staging/media/imx/imx-ic-prpencvf.c | 9 +++++++-- drivers/staging/media/imx/imx-media-csi.c | 8 ++++++-- 2 files changed, 13 insertions(+), 4 deletions(-) diff --git a/drivers/staging/media/imx/imx-ic-prpencvf.c b/drivers/staging/media/imx/imx-ic-prpencvf.c index 1a03d4c9d7b8..cf76b0432371 100644 --- a/drivers/staging/media/imx/imx-ic-prpencvf.c +++ b/drivers/staging/media/imx/imx-ic-prpencvf.c @@ -391,12 +391,17 @@ static int prp_setup_channel(struct prp_priv *priv, image.phys0 = addr0; image.phys1 = addr1; - if (channel == priv->out_ch || channel == priv->rot_out_ch) { + /* + * Skip writing U and V components to odd rows in the output + * channels for planar 4:2:0 (but not when enabling IDMAC + * interweaving, they are incompatible). + */ + if (!interweave && (channel == priv->out_ch || + channel == priv->rot_out_ch)) { switch (image.pix.pixelformat) { case V4L2_PIX_FMT_YUV420: case V4L2_PIX_FMT_YVU420: case V4L2_PIX_FMT_NV12: - /* Skip writing U and V components to odd rows */ ipu_cpmem_skip_odd_chroma_rows(channel); break; } diff --git a/drivers/staging/media/imx/imx-media-csi.c b/drivers/staging/media/imx/imx-media-csi.c index 10945cbdbd71..604d0bd24389 100644 --- a/drivers/staging/media/imx/imx-media-csi.c +++ b/drivers/staging/media/imx/imx-media-csi.c @@ -457,8 +457,12 @@ static int csi_idmac_setup_channel(struct csi_priv *priv) ((image.pix.width & 0x1f) ? ((image.pix.width & 0xf) ? 8 : 16) : 32) : 64; passthrough_bits = 16; - /* Skip writing U and V components to odd rows */ - ipu_cpmem_skip_odd_chroma_rows(priv->idmac_ch); + /* + * Skip writing U and V components to odd rows (but not + * when enabling IDMAC interweaving, they are incompatible). + */ + if (!interweave) + ipu_cpmem_skip_odd_chroma_rows(priv->idmac_ch); break; case V4L2_PIX_FMT_YUYV: case V4L2_PIX_FMT_UYVY: -- 2.17.1