[PATCH v2 03/17] media: v4l2: Add Apple interchange pixel formats
From: Sofus Forstreuter
Date: Sat Sep 26 2026 - 09:16:24 EST
Apple Interchange is a compressed and tiled format modifier.
Its intended use is for sharing buffers between hardware blocks (GPU,
display controller, video codecs) on Apple platforms.
Add it to the v4l2_format_info table to help with calculating sizes.
Signed-off-by: Sofus Forstreuter <sofus.c@xxxxxxxxxx>
---
drivers/media/v4l2-core/v4l2-common.c | 7 +++++++
drivers/media/v4l2-core/v4l2-ioctl.c | 6 ++++++
include/uapi/linux/videodev2.h | 8 ++++++++
3 files changed, 21 insertions(+)
diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c
index b78fc0845a16..eb2eb1c59fdd 100644
--- a/drivers/media/v4l2-core/v4l2-common.c
+++ b/drivers/media/v4l2-core/v4l2-common.c
@@ -336,6 +336,13 @@ const struct v4l2_format_info *v4l2_format_info(u32 format)
{ .format = V4L2_PIX_FMT_GREY, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 1, .bpp = { 1, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_Y12, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
+ { .format = V4L2_PIX_FMT_IC12, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 2 },
+ { .format = V4L2_PIX_FMT_IC16, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 1 },
+ { .format = V4L2_PIX_FMT_IC24, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
+ { .format = V4L2_PIX_FMT_IC03, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 5, 10, 0, 0 }, .bpp_div = { 4, 4, 1, 1 }, .hdiv = 2, .vdiv = 2 },
+ { .format = V4L2_PIX_FMT_IC23, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 5, 10, 0, 0 }, .bpp_div = { 4, 4, 1, 1 }, .hdiv = 2, .vdiv = 1 },
+ { .format = V4L2_PIX_FMT_IC43, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 5, 10, 0, 0 }, .bpp_div = { 4, 4, 1, 1 }, .hdiv = 1, .vdiv = 1 },
+
/* Tiled YUV formats */
{ .format = V4L2_PIX_FMT_NV12_4L4, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 2 },
{ .format = V4L2_PIX_FMT_NV15_4L4, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 5, 10, 0, 0 }, .bpp_div = { 4, 4, 1, 1 }, .hdiv = 2, .vdiv = 2,
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 1f2519ffeb2b..b3c49b08ef2f 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1561,6 +1561,12 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_PISP_COMP2_GBRG: descr = "PiSP 8b GBGB/RGRG mode2 compr"; break;
case V4L2_PIX_FMT_PISP_COMP2_BGGR: descr = "PiSP 8b BGBG/GRGR mode2 compr"; break;
case V4L2_PIX_FMT_PISP_COMP2_MONO: descr = "PiSP 8b monochrome mode2 compr"; break;
+ case V4L2_PIX_FMT_IC12: descr = "Interchange NV12"; break;
+ case V4L2_PIX_FMT_IC16: descr = "Interchange NV16"; break;
+ case V4L2_PIX_FMT_IC24: descr = "Interchange NV24"; break;
+ case V4L2_PIX_FMT_IC03: descr = "Interchange P030"; break;
+ case V4L2_PIX_FMT_IC23: descr = "Interchange P230"; break;
+ case V4L2_PIX_FMT_IC43: descr = "Interchange P430"; break;
default:
if (fmt->description[0])
return;
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 5472e433ed06..918e060b6fe0 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -842,6 +842,14 @@ struct v4l2_pix_format {
#define V4L2_PIX_FMT_PISP_COMP2_BGGR v4l2_fourcc('P', 'C', '2', 'B') /* PiSP 8-bit mode 2 compressed BGGR bayer */
#define V4L2_PIX_FMT_PISP_COMP2_MONO v4l2_fourcc('P', 'C', '2', 'M') /* PiSP 8-bit mode 2 compressed monochrome */
+/* Apple Interchange, compressed and tiled formats */
+#define V4L2_PIX_FMT_IC12 v4l2_fourcc('I', 'C', '1', '2') /* Interchange NV12 */
+#define V4L2_PIX_FMT_IC16 v4l2_fourcc('I', 'C', '1', '6') /* Interchange NV16 */
+#define V4L2_PIX_FMT_IC24 v4l2_fourcc('I', 'C', '2', '4') /* Interchange NV24 */
+#define V4L2_PIX_FMT_IC03 v4l2_fourcc('I', 'C', '0', '3') /* Interchange P030 */
+#define V4L2_PIX_FMT_IC23 v4l2_fourcc('I', 'C', '2', '3') /* Interchange P230 */
+#define V4L2_PIX_FMT_IC43 v4l2_fourcc('I', 'C', '4', '3') /* Interchange P430 */
+
/* Renesas RZ/V2H CRU packed formats. 64-bit units with contiguous pixels */
#define V4L2_PIX_FMT_RAW_CRU10 v4l2_fourcc('C', 'R', '1', '0')
#define V4L2_PIX_FMT_RAW_CRU12 v4l2_fourcc('C', 'R', '1', '2')
--
2.55.0