diff mbox series

[2/2] media: camss: Make use of V4L2_CAP_IO_MC

Message ID 20201125123710.28491-2-andrey.konovalov@linaro.org
State New
Headers show
Series [1/2] Revert "media: camss: Make use of V4L2_CAP_IO_MC" | expand

Commit Message

Andrey Konovalov Nov. 25, 2020, 12:37 p.m. UTC 
Implement mbus_code filtering for format enumeration.

Without this patch libcamera errors out with:
"ERROR V4L2 v4l2_videodevice.cpp:982 /dev/video0[cap]: Media bus code
filtering not supported by the device"

This is the second version of this change which handles the case of
several pixel formats corresponding to one media bus format correctly.

Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org>

---
 drivers/media/platform/qcom/camss/camss-video.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

-- 
2.17.1
diff mbox series

Patch

diff --git a/drivers/media/platform/qcom/camss/camss-video.c b/drivers/media/platform/qcom/camss/camss-video.c
index 20673de9020e..60737b771d52 100644
--- a/drivers/media/platform/qcom/camss/camss-video.c
+++ b/drivers/media/platform/qcom/camss/camss-video.c
@@ -539,6 +539,7 @@  static int video_enum_fmt(struct file *file, void *fh, struct v4l2_fmtdesc *f)
 {
 	struct camss_video *video = video_drvdata(file);
 	int i, j, k;
+	u32 mcode = f->mbus_code;
 
 	if (f->type != video->type)
 		return -EINVAL;
@@ -549,7 +550,12 @@  static int video_enum_fmt(struct file *file, void *fh, struct v4l2_fmtdesc *f)
 	/* find index "i" of "k"th unique pixelformat in formats array */
 	k = -1;
 	for (i = 0; i < video->nformats; i++) {
+		if (mcode != 0 && video->formats[i].code != mcode)
+			continue;
+
 		for (j = 0; j < i; j++) {
+			if (mcode != 0 && video->formats[j].code != mcode)
+				continue;
 			if (video->formats[i].pixelformat ==
 					video->formats[j].pixelformat)
 				break;
@@ -948,8 +954,8 @@  int msm_video_register(struct camss_video *video, struct v4l2_device *v4l2_dev,
 	}
 
 	vdev->fops = &msm_vid_fops;
-	vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_STREAMING |
-							V4L2_CAP_READWRITE;
+	vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_STREAMING
+			  | V4L2_CAP_READWRITE | V4L2_CAP_IO_MC;
 	vdev->ioctl_ops = &msm_vid_ioctl_ops;
 	vdev->release = msm_video_release;
 	vdev->v4l2_dev = v4l2_dev;