[PATCH 1/1] media: imx: imx7-media-csi: Set pixfmt field, width, height & sizeimage

[Alexander Stein <alexander.stein@ew.tq-group.com>]

Fixes the following v4l2-comliance errors for VIDIOC_TRY_FMT:
* !pix.width || !pix.height
* !pix.sizeimage
* pix.field == V4L2_FIELD_ANY

Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
---
This patch is based on [1] and fixes the last v4l2-compliance errors and
a 'WARN_ON(!plane_sizes[i])' in vb2_core_reqbufs().
My platform: TQMa8MQML (imx8mm) + imx327lqr. 

The v4l2-compliance output:
--8<--
v4l2-compliance 1.24.1-5010, 64 bits, 64-bit time_t
v4l2-compliance SHA: 8799081b1436 2023-02-24 17:03:58

Compliance test for imx-capture device /dev/video0:

Driver Info:
        Driver name      : imx-capture
        Card type        : imx-capture
        Bus info         : platform:32e20000.csi
        Driver version   : 6.3.0
        Capabilities     : 0xa4200001
                Video Capture
                I/O MC
                Streaming
                Extended Pix Format
                Device Capabilities
        Device Caps      : 0x24200001
                Video Capture
                I/O MC
                Streaming
                Extended Pix Format
Media Driver Info:
        Driver name      : imx7-csi
        Model            : imx-media
        Serial           : 
        Bus info         : platform:32e20000.csi
        Media version    : 6.3.0
        Hardware revision: 0x00000000 (0)
        Driver version   : 6.3.0
Interface Info:
        ID               : 0x03000006
        Type             : V4L Video
Entity Info:
        ID               : 0x00000004 (4)
        Name             : csi capture
        Function         : V4L2 I/O
        Pad 0x01000005   : 0: Sink
          Link 0x02000008: from remote pad 0x1000003 of entity 'csi' (Video Interface Bridge): Data, Enabled, Immutable

Required ioctls:
        test MC information (see 'Media Driver Info' above): OK
        test VIDIOC_QUERYCAP: OK
        test invalid ioctls: OK

Allow for multiple opens:
        test second /dev/video0 open: OK
        test VIDIOC_QUERYCAP: OK
        test VIDIOC_G/S_PRIORITY: OK
        test for unlimited opens: OK

Debug ioctls:
        test VIDIOC_DBG_G/S_REGISTER: OK (Not Supported)
        test VIDIOC_LOG_STATUS: OK (Not Supported)

Input ioctls:
        test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported)
        test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
        test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported)
        test VIDIOC_ENUMAUDIO: OK (Not Supported)
        test VIDIOC_G/S/ENUMINPUT: OK
        test VIDIOC_G/S_AUDIO: OK (Not Supported)
        Inputs: 1 Audio Inputs: 0 Tuners: 0

Output ioctls:
        test VIDIOC_G/S_MODULATOR: OK (Not Supported)
        test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
        test VIDIOC_ENUMAUDOUT: OK (Not Supported)
        test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported)
        test VIDIOC_G/S_AUDOUT: OK (Not Supported)
        Outputs: 0 Audio Outputs: 0 Modulators: 0

Input/Output configuration ioctls:
        test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported)
        test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported)
        test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported)
        test VIDIOC_G/S_EDID: OK (Not Supported)

Control ioctls (Input 0):
        test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK (Not Supported)
        test VIDIOC_QUERYCTRL: OK (Not Supported)
        test VIDIOC_G/S_CTRL: OK (Not Supported)
        test VIDIOC_G/S/TRY_EXT_CTRLS: OK (Not Supported)
        test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK (Not Supported)
        test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
        Standard Controls: 0 Private Controls: 0

Format ioctls (Input 0):
        test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
        test VIDIOC_G/S_PARM: OK (Not Supported)
        test VIDIOC_G_FBUF: OK (Not Supported)
        test VIDIOC_G_FMT: OK
                fail: v4l2-test-formats.cpp(468): !pix.width || !pix.height
        test VIDIOC_TRY_FMT: FAIL
                fail: v4l2-test-formats.cpp(468): !pix.width || !pix.height
        test VIDIOC_S_FMT: FAIL
        test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
        test Cropping: OK (Not Supported)
                fail: v4l2-test-formats.cpp(1726): !sel_padded.r.width || !sel_padded.r.height
                fail: v4l2-test-formats.cpp(1778): testBasicCompose(node, V4L2_BUF_TYPE_VIDEO_CAPTURE)
        test Composing: FAIL
        test Scaling: OK

Codec ioctls (Input 0):
        test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
        test VIDIOC_G_ENC_INDEX: OK (Not Supported)
        test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported)

Buffer ioctls (Input 0):
                fail: v4l2-test-buffers.cpp(607): q.reqbufs(node, 1)
        test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: FAIL
                fail: v4l2-test-buffers.cpp(783): VIDIOC_EXPBUF is supported, but the V4L2_MEMORY_MMAP support is missing or malfunctioning.
                fail: v4l2-test-buffers.cpp(784): VIDIOC_EXPBUF is supported, but the V4L2_MEMORY_MMAP support is missing, probably due to earlier failing format tests.
        test VIDIOC_EXPBUF: OK (Not Supported)
        test Requests: OK (Not Supported)

Total for imx-capture device /dev/video0: 46, Succeeded: 42, Failed: 4, Warnings: 0
--8<--

Best regards,
Alexander

[1] https://lore.kernel.org/all/20230321072707.678039-1-alexander.stein@ew.tq-group.com/

 drivers/media/platform/nxp/imx7-media-csi.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/media/platform/nxp/imx7-media-csi.c b/drivers/media/platform/nxp/imx7-media-csi.c
index 389d7d88b341..1888559a6531 100644
--- a/drivers/media/platform/nxp/imx7-media-csi.c
+++ b/drivers/media/platform/nxp/imx7-media-csi.c
@@ -1147,6 +1147,7 @@ __imx7_csi_video_try_fmt(struct v4l2_pix_format *pixfmt,
 {
 	struct v4l2_mbus_framefmt fmt_src;
 	const struct imx7_csi_pixfmt *cc;
+	unsigned int walign;
 
 	/*
 	 * Find the pixel format, default to the first supported format if not
@@ -1175,6 +1176,17 @@ __imx7_csi_video_try_fmt(struct v4l2_pix_format *pixfmt,
 	v4l2_fill_mbus_format(&fmt_src, pixfmt, 0);
 	imx7_csi_mbus_fmt_to_pix_fmt(pixfmt, &fmt_src, cc);
 
+	if (cc->bpp == 8)
+		walign = 8;
+	else
+		walign = 4;
+
+	v4l_bound_align_image(&pixfmt->width, 1, 0xffff / (cc->bpp / 8), walign,
+			      &pixfmt->height, 1, 0xffff, 1, 0);
+
+	pixfmt->sizeimage = (cc->bpp * pixfmt->width * pixfmt->height) / BITS_PER_BYTE;
+	pixfmt->field = V4L2_FIELD_NONE;
+
 	if (compose) {
 		compose->width = fmt_src.width;
 		compose->height = fmt_src.height;
-- 
2.34.1