[PATCH v4 03/11] media: imx8-isi: Support mbus_code filtering in format enumeration
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COOLING11d
From: Guoniu Zhou <hidden>
Date: 2026-09-29 08:48:29
Also in:
imx, linux-devicetree, linux-media, lkml
Subsystem:
media input infrastructure (v4l/dvb), nxp i.mx 8m isi driver, the rest · Maintainers:
Mauro Carvalho Chehab, Laurent Pinchart, Linus Torvalds
Extend mxc_isi_format_enum() to accept a v4l2_fmtdesc pointer instead of a plain index, so it can filter formats by mbus_code when set. This is used by the capture path to enumerate only formats compatible with the connected subdev output. For the M2M device, the V4L2 framework clears mbus_code to 0 for devices without V4L2_CAP_IO_MC (v4l2-ioctl.c), so this change has no effect on M2M format enumeration. Signed-off-by: Guoniu Zhou <redacted> --- Changes in v4: - New patch --- drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h | 2 +- drivers/media/platform/nxp/imx8-isi/imx8-isi-m2m.c | 2 +- drivers/media/platform/nxp/imx8-isi/imx8-isi-video.c | 6 +++++- 3 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h b/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h
index 58b47335afc7..a30633a7e2e9 100644
--- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h
+++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h@@ -322,7 +322,7 @@ mxc_isi_bus_format_by_index(unsigned int index, unsigned int pad); const struct mxc_isi_format_info * mxc_isi_format_by_fourcc(u32 fourcc, enum mxc_isi_video_type type); const struct mxc_isi_format_info * -mxc_isi_format_enum(unsigned int index, enum mxc_isi_video_type type); +mxc_isi_format_enum(const struct v4l2_fmtdesc *f, enum mxc_isi_video_type type); const struct mxc_isi_format_info * mxc_isi_format_try(struct mxc_isi_pipe *pipe, struct v4l2_pix_format_mplane *pix, enum mxc_isi_video_type type);
diff --git a/drivers/media/platform/nxp/imx8-isi/imx8-isi-m2m.c b/drivers/media/platform/nxp/imx8-isi/imx8-isi-m2m.c
index b729eecad0fe..1178947bb548 100644
--- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-m2m.c
+++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-m2m.c@@ -492,7 +492,7 @@ static int mxc_isi_m2m_enum_fmt_vid(struct file *file, void *fh, MXC_ISI_VIDEO_M2M_OUT : MXC_ISI_VIDEO_M2M_CAP; const struct mxc_isi_format_info *info; - info = mxc_isi_format_enum(f->index, type); + info = mxc_isi_format_enum(f, type); if (!info) return -EINVAL;
diff --git a/drivers/media/platform/nxp/imx8-isi/imx8-isi-video.c b/drivers/media/platform/nxp/imx8-isi/imx8-isi-video.c
index f45c2aae59ce..0d87a1082727 100644
--- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-video.c
+++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-video.c@@ -482,13 +482,17 @@ mxc_isi_format_by_fourcc(u32 fourcc, enum mxc_isi_video_type type) } const struct mxc_isi_format_info * -mxc_isi_format_enum(unsigned int index, enum mxc_isi_video_type type) +mxc_isi_format_enum(const struct v4l2_fmtdesc *f, enum mxc_isi_video_type type) { + unsigned int index = f->index; unsigned int i; for (i = 0; i < ARRAY_SIZE(mxc_isi_formats); i++) { const struct mxc_isi_format_info *fmt = &mxc_isi_formats[i]; + if (f->mbus_code && fmt->mbus_code != f->mbus_code) + continue; + if (!(fmt->type & type)) continue;
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2.34.1