Re: [PATCH 00/15] Intel IPU6 and IPU6 input system drivers

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Hi,

On 9/4/23 05:13, Cao, Bingbu wrote:
> Hans,
> 
> Thanks for your test and report.
> 
> I have made some changes locally which will support the latest
> v4l2-async APIs, I will also add the fix for this issue and merge
> them in v3.

I have been trying to make rawbayer capture with the mainline isys code
work in libcamera and I have hit several short comings in the ipu6-isys
code. I have attached 3 patches to fix various issues please integrate
these into the next version of this series.

Talking about the next version of this series, I think it would be
good to post a new version soon ?

Regards,

Hans
From 14f42fd3071a7aba8b83b98802ca3b413794296d Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@xxxxxxxxxx>
Date: Mon, 2 Oct 2023 16:37:11 +0200
Subject: [PATCH 1/3] media: intel/ipu6: Add mbus code filtering to isys
 /dev/video enum_fmt

Add mbus code filtering to ipu6_isys_vidioc_enum_fmt().

Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
 .../media/pci/intel/ipu6/ipu6-isys-video.c    | 29 +++++++++++++++----
 1 file changed, 23 insertions(+), 6 deletions(-)

diff --git a/drivers/media/pci/intel/ipu6/ipu6-isys-video.c b/drivers/media/pci/intel/ipu6/ipu6-isys-video.c
index dc1605491352..20fd03f6f204 100644
--- a/drivers/media/pci/intel/ipu6/ipu6-isys-video.c
+++ b/drivers/media/pci/intel/ipu6/ipu6-isys-video.c
@@ -130,14 +130,31 @@ int ipu6_isys_vidioc_querycap(struct file *file, void *fh,
 int ipu6_isys_vidioc_enum_fmt(struct file *file, void *fh,
 			      struct v4l2_fmtdesc *f)
 {
-	if (f->index >= ARRAY_SIZE(ipu6_isys_pfmts))
-		return -EINVAL;
+	unsigned int i, found = 0;
 
-	f->flags = 0;
-	f->pixelformat = ipu6_isys_pfmts[f->index].pixelformat;
-	f->mbus_code = ipu6_isys_pfmts[f->index].code;
+	if (!f->mbus_code) {
+		if (f->index >= ARRAY_SIZE(ipu6_isys_pfmts))
+			return -EINVAL;
 
-	return 0;
+		f->flags = 0;
+		f->pixelformat = ipu6_isys_pfmts[f->index].pixelformat;
+		f->mbus_code = ipu6_isys_pfmts[f->index].code;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(ipu6_isys_pfmts); i++) {
+		if (f->mbus_code != ipu6_isys_pfmts[i].code)
+			continue;
+
+		if (f->index == found) {
+			f->flags = 0;
+			f->pixelformat = ipu6_isys_pfmts[i].pixelformat;
+			return 0;
+		}
+
+		found++;
+	}
+
+	return -EINVAL;
 }
 
 static int vidioc_g_fmt_vid_cap_mplane(struct file *file, void *fh,
-- 
2.41.0

From 8250d2c3fd1c2ab83debcca80b4947d3b9d410f7 Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@xxxxxxxxxx>
Date: Mon, 2 Oct 2023 17:02:06 +0200
Subject: [PATCH 2/3] media: intel/ipu6: Implement g_enum_framesizes for isys
 /dev/video# nodes

Implement g_enum_framesizes for isys /dev/video# nodes.

Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
 drivers/media/pci/intel/ipu6/ipu6-isys-video.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/media/pci/intel/ipu6/ipu6-isys-video.c b/drivers/media/pci/intel/ipu6/ipu6-isys-video.c
index 20fd03f6f204..ad74a19527b7 100644
--- a/drivers/media/pci/intel/ipu6/ipu6-isys-video.c
+++ b/drivers/media/pci/intel/ipu6/ipu6-isys-video.c
@@ -157,6 +157,23 @@ int ipu6_isys_vidioc_enum_fmt(struct file *file, void *fh,
 	return -EINVAL;
 }
 
+static int ipu6_isys_vidioc_g_enum_framesizes(struct file *file, void *fh,
+					      struct v4l2_frmsizeenum *fsize)
+{
+	if (fsize->index > 0)
+		return -EINVAL;
+
+	fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
+	fsize->stepwise.min_width = IPU6_ISYS_MIN_WIDTH;
+	fsize->stepwise.max_width = IPU6_ISYS_MAX_WIDTH;
+	fsize->stepwise.min_height = IPU6_ISYS_MIN_HEIGHT;
+	fsize->stepwise.max_height = IPU6_ISYS_MAX_HEIGHT;
+	fsize->stepwise.step_width = 1;
+	fsize->stepwise.step_height = 1;
+
+	return 0;
+}
+
 static int vidioc_g_fmt_vid_cap_mplane(struct file *file, void *fh,
 				       struct v4l2_format *fmt)
 {
@@ -987,6 +1004,7 @@ int ipu6_isys_video_set_streaming(struct ipu6_isys_video *av, int state,
 static const struct v4l2_ioctl_ops ioctl_ops_mplane = {
 	.vidioc_querycap = ipu6_isys_vidioc_querycap,
 	.vidioc_enum_fmt_vid_cap = ipu6_isys_vidioc_enum_fmt,
+	.vidioc_enum_framesizes = ipu6_isys_vidioc_g_enum_framesizes,
 	.vidioc_g_fmt_vid_cap_mplane = vidioc_g_fmt_vid_cap_mplane,
 	.vidioc_s_fmt_vid_cap_mplane = vidioc_s_fmt_vid_cap_mplane,
 	.vidioc_try_fmt_vid_cap_mplane = vidioc_try_fmt_vid_cap_mplane,
-- 
2.41.0

From b5db94bbd147711885986c1f6e46f59fdca10d3c Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@xxxxxxxxxx>
Date: Mon, 2 Oct 2023 16:05:35 +0200
Subject: [PATCH 3/3] media: intel/ipu6: Set V4L2_CAP_IO_MC flag for isys
 /dev/video# nodes

The IPU6 isys is a media-controller centric device which needs
the pipeline to be configured using the media controller API before use.

Set the V4L2_CAP_IO_MC flag to reflect this.

This also allows dropping of the enum_input() g_input() and s_input()
implementations, with V4L2_CAP_IO_MC set the v4l2-core will take care
of those.

Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
 .../media/pci/intel/ipu6/ipu6-isys-video.c    | 29 ++-----------------
 1 file changed, 2 insertions(+), 27 deletions(-)

diff --git a/drivers/media/pci/intel/ipu6/ipu6-isys-video.c b/drivers/media/pci/intel/ipu6/ipu6-isys-video.c
index ad74a19527b7..e6fc32603c3f 100644
--- a/drivers/media/pci/intel/ipu6/ipu6-isys-video.c
+++ b/drivers/media/pci/intel/ipu6/ipu6-isys-video.c
@@ -262,29 +262,6 @@ static int vidioc_try_fmt_vid_cap_mplane(struct file *file, void *fh,
 	return 0;
 }
 
-static int vidioc_enum_input(struct file *file, void *fh,
-			     struct v4l2_input *input)
-{
-	if (input->index > 0)
-		return -EINVAL;
-	strscpy(input->name, "camera", sizeof(input->name));
-	input->type = V4L2_INPUT_TYPE_CAMERA;
-
-	return 0;
-}
-
-static int vidioc_g_input(struct file *file, void *fh, unsigned int *input)
-{
-	*input = 0;
-
-	return 0;
-}
-
-static int vidioc_s_input(struct file *file, void *fh, unsigned int input)
-{
-	return input == 0 ? 0 : -EINVAL;
-}
-
 static int link_validate(struct media_link *link)
 {
 	struct ipu6_isys_video *av =
@@ -1017,9 +994,6 @@ static const struct v4l2_ioctl_ops ioctl_ops_mplane = {
 	.vidioc_streamon = vb2_ioctl_streamon,
 	.vidioc_streamoff = vb2_ioctl_streamoff,
 	.vidioc_expbuf = vb2_ioctl_expbuf,
-	.vidioc_enum_input = vidioc_enum_input,
-	.vidioc_g_input = vidioc_g_input,
-	.vidioc_s_input = vidioc_s_input,
 };
 
 static const struct media_entity_operations entity_ops = {
@@ -1217,7 +1191,8 @@ int ipu6_isys_video_init(struct ipu6_isys_video *av)
 
 	mutex_init(&av->mutex);
 	av->vdev.device_caps = V4L2_CAP_STREAMING |
-			       V4L2_CAP_VIDEO_CAPTURE_MPLANE;
+			       V4L2_CAP_VIDEO_CAPTURE_MPLANE |
+			       V4L2_CAP_IO_MC;
 	av->vdev.vfl_dir = VFL_DIR_RX;
 
 	ret = ipu6_isys_queue_init(&av->aq);
-- 
2.41.0


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