linux-kernel - [PATCH 8/9] media: sun6i-isp: capture: Implement MC I/O with extended enum

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Message-Id: <20230324151228.2778112-9-paul.kocialkowski@bootlin.com>
Date:   Fri, 24 Mar 2023 16:12:27 +0100
From:   Paul Kocialkowski <paul.kocialkowski@...tlin.com>
To:     linux-media@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-sunxi@...ts.linux.dev, linux-kernel@...r.kernel.org,
        linux-staging@...ts.linux.dev
Cc:     Paul Kocialkowski <paul.kocialkowski@...tlin.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Samuel Holland <samuel@...lland.org>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Adam Pigg <adam@...gz.co.uk>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: [PATCH 8/9] media: sun6i-isp: capture: Implement MC I/O with extended enum_fmt

This driver needs the media-controller API to operate and should not be
considered as a video-device-centric implementation.

Properly report the IO_MC device cap and extend the enum_fmt
implementation to support enumeration with an explicit mbus_code.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@...tlin.com>
---
 .../staging/media/sunxi/sun6i-isp/sun6i_isp_capture.c    | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_capture.c b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_capture.c
index 1595a9607775..5160b93b69ff 100644
--- a/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_capture.c
+++ b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_capture.c
@@ -439,6 +439,12 @@ static int sun6i_isp_capture_enum_fmt(struct file *file, void *private,
 				      struct v4l2_fmtdesc *fmtdesc)
 {
 	u32 index = fmtdesc->index;
+	u32 mbus_code = fmtdesc->mbus_code;
+
+	if (mbus_code && !sun6i_isp_proc_format_find(mbus_code))
+		return -EINVAL;
+
+	/* Capture format is independent from proc format. */
 
 	if (index >= ARRAY_SIZE(sun6i_isp_capture_formats))
 		return -EINVAL;
@@ -685,7 +691,8 @@ int sun6i_isp_capture_setup(struct sun6i_isp_device *isp_dev)
 
 	strscpy(video_dev->name, SUN6I_ISP_CAPTURE_NAME,
 		sizeof(video_dev->name));
-	video_dev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
+	video_dev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
+				 V4L2_CAP_IO_MC;
 	video_dev->vfl_dir = VFL_DIR_RX;
 	video_dev->release = video_device_release_empty;
 	video_dev->fops = &sun6i_isp_capture_fops;
-- 
2.39.2