libcamera: Add support for MediaTek packed Bayer formats

The MediaTek MT8183 camera hardware stores 10- and 12-bit Bayer data in
a vendor-specific packed format. Support it in libcamera.

The 14-bit version is left out for the time being as its alignment
constraints are not clear yet.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

3 files changed, 146 insertions, 0 deletions

diff --git a/src/libcamera/formats.cpp b/src/libcamera/formats.cpp
index afcaabc5..472ec142 100644
--- a/src/libcamera/formats.cpp
+++ b/src/libcamera/formats.cpp
@@ -890,6 +890,110 @@ const std::map<PixelFormat, PixelFormatInfo> pixelFormatInfo{
 		.pixelsPerGroup = 25,
 		.planes = {{ { 32, 1 }, { 0, 0 }, { 0, 0 } }},
 	} },
+	{ formats::SBGGR10_MTK, {
+		.name = "SBGGR10_MTK",
+		.format = formats::SBGGR10_MTK,
+		.v4l2Formats = {
+			.single = V4L2PixelFormat(V4L2_PIX_FMT_MTISP_SBGGR10),
+			.multi = V4L2PixelFormat(),
+		},
+		.bitsPerPixel = 10,
+		.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
+		.packed = true,
+		.pixelsPerGroup = 4,
+		.planes = {{ { 5, 1 }, { 0, 0 }, { 0, 0 } }},
+	} },
+	{ formats::SGBRG10_MTK, {
+		.name = "SGBRG10_MTK",
+		.format = formats::SGBRG10_MTK,
+		.v4l2Formats = {
+			.single = V4L2PixelFormat(V4L2_PIX_FMT_MTISP_SGBRG10),
+			.multi = V4L2PixelFormat(),
+		},
+		.bitsPerPixel = 10,
+		.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
+		.packed = true,
+		.pixelsPerGroup = 4,
+		.planes = {{ { 5, 1 }, { 0, 0 }, { 0, 0 } }},
+	} },
+	{ formats::SGRBG10_MTK, {
+		.name = "SGRBG10_MTK",
+		.format = formats::SGRBG10_MTK,
+		.v4l2Formats = {
+			.single = V4L2PixelFormat(V4L2_PIX_FMT_MTISP_SGRBG10),
+			.multi = V4L2PixelFormat(),
+		},
+		.bitsPerPixel = 10,
+		.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
+		.packed = true,
+		.pixelsPerGroup = 4,
+		.planes = {{ { 5, 1 }, { 0, 0 }, { 0, 0 } }},
+	} },
+	{ formats::SRGGB10_MTK, {
+		.name = "SRGGB10_MTK",
+		.format = formats::SRGGB10_MTK,
+		.v4l2Formats = {
+			.single = V4L2PixelFormat(V4L2_PIX_FMT_MTISP_SRGGB10),
+			.multi = V4L2PixelFormat(),
+		},
+		.bitsPerPixel = 10,
+		.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
+		.packed = true,
+		.pixelsPerGroup = 4,
+		.planes = {{ { 5, 1 }, { 0, 0 }, { 0, 0 } }},
+	} },
+	{ formats::SBGGR12_MTK, {
+		.name = "SBGGR12_MTK",
+		.format = formats::SBGGR12_MTK,
+		.v4l2Formats = {
+			.single = V4L2PixelFormat(V4L2_PIX_FMT_MTISP_SBGGR12),
+			.multi = V4L2PixelFormat(),
+		},
+		.bitsPerPixel = 12,
+		.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
+		.packed = true,
+		.pixelsPerGroup = 2,
+		.planes = {{ { 3, 1 }, { 0, 0 }, { 0, 0 } }},
+	} },
+	{ formats::SGBRG12_MTK, {
+		.name = "SGBRG12_MTK",
+		.format = formats::SGBRG12_MTK,
+		.v4l2Formats = {
+			.single = V4L2PixelFormat(V4L2_PIX_FMT_MTISP_SGBRG12),
+			.multi = V4L2PixelFormat(),
+		},
+		.bitsPerPixel = 12,
+		.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
+		.packed = true,
+		.pixelsPerGroup = 2,
+		.planes = {{ { 3, 1 }, { 0, 0 }, { 0, 0 } }},
+	} },
+	{ formats::SGRBG12_MTK, {
+		.name = "SGRBG12_MTK",
+		.format = formats::SGRBG12_MTK,
+		.v4l2Formats = {
+			.single = V4L2PixelFormat(V4L2_PIX_FMT_MTISP_SGRBG12),
+			.multi = V4L2PixelFormat(),
+		},
+		.bitsPerPixel = 12,
+		.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
+		.packed = true,
+		.pixelsPerGroup = 2,
+		.planes = {{ { 3, 1 }, { 0, 0 }, { 0, 0 } }},
+	} },
+	{ formats::SRGGB12_MTK, {
+		.name = "SRGGB12_MTK",
+		.format = formats::SRGGB12_MTK,
+		.v4l2Formats = {
+			.single = V4L2PixelFormat(V4L2_PIX_FMT_MTISP_SRGGB12),
+			.multi = V4L2PixelFormat(),
+		},
+		.bitsPerPixel = 12,
+		.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
+		.packed = true,
+		.pixelsPerGroup = 2,
+		.planes = {{ { 3, 1 }, { 0, 0 }, { 0, 0 } }},
+	} },
 
 	/* Compressed formats. */
 	{ formats::MJPEG, {
diff --git a/src/libcamera/formats.yaml b/src/libcamera/formats.yaml
index 1f3f0433..d2bff5e1 100644
--- a/src/libcamera/formats.yaml
+++ b/src/libcamera/formats.yaml
@@ -151,4 +151,30 @@ formats:
   - SBGGR10_IPU3:
       fourcc: DRM_FORMAT_SBGGR10
       mod: IPU3_FORMAT_MOD_PACKED
+
+  - SRGGB10_MTK:
+      fourcc: DRM_FORMAT_SRGGB10
+      mod: MEDIATEK_FORMAT_MOD_BAYER_PACKED
+  - SGRBG10_MTK:
+      fourcc: DRM_FORMAT_SGRBG10
+      mod: MEDIATEK_FORMAT_MOD_BAYER_PACKED
+  - SGBRG10_MTK:
+      fourcc: DRM_FORMAT_SGBRG10
+      mod: MEDIATEK_FORMAT_MOD_BAYER_PACKED
+  - SBGGR10_MTK:
+      fourcc: DRM_FORMAT_SBGGR10
+      mod: MEDIATEK_FORMAT_MOD_BAYER_PACKED
+
+  - SRGGB12_MTK:
+      fourcc: DRM_FORMAT_SRGGB12
+      mod: MEDIATEK_FORMAT_MOD_BAYER_PACKED
+  - SGRBG12_MTK:
+      fourcc: DRM_FORMAT_SGRBG12
+      mod: MEDIATEK_FORMAT_MOD_BAYER_PACKED
+  - SGBRG12_MTK:
+      fourcc: DRM_FORMAT_SGBRG12
+      mod: MEDIATEK_FORMAT_MOD_BAYER_PACKED
+  - SBGGR12_MTK:
+      fourcc: DRM_FORMAT_SBGGR12
+      mod: MEDIATEK_FORMAT_MOD_BAYER_PACKED
 ...
diff --git a/src/libcamera/v4l2_pixelformat.cpp b/src/libcamera/v4l2_pixelformat.cpp
index 0e0da3f0..c0fc38ea 100644
--- a/src/libcamera/v4l2_pixelformat.cpp
+++ b/src/libcamera/v4l2_pixelformat.cpp
@@ -147,6 +147,14 @@ const std::map<V4L2PixelFormat, V4L2PixelFormat::Info> vpf2pf{
 		{ formats::SGRBG10_CSI2P, "10-bit Bayer GRGR/BGBG Packed" } },
 	{ V4L2PixelFormat(V4L2_PIX_FMT_SRGGB10P),
 		{ formats::SRGGB10_CSI2P, "10-bit Bayer RGRG/GBGB Packed" } },
+	{ V4L2PixelFormat(V4L2_PIX_FMT_MTISP_SBGGR10),
+		{ formats::SBGGR10_MTK, "10-bit Bayer BGGR MTISP Packed" } },
+	{ V4L2PixelFormat(V4L2_PIX_FMT_MTISP_SGBRG10),
+		{ formats::SGBRG10_MTK, "10-bit Bayer GBRG MTISP Packed" } },
+	{ V4L2PixelFormat(V4L2_PIX_FMT_MTISP_SGRBG10),
+		{ formats::SGRBG10_MTK, "10-bit Bayer GRBG MTISP Packed" } },
+	{ V4L2PixelFormat(V4L2_PIX_FMT_MTISP_SRGGB10),
+		{ formats::SRGGB10_MTK, "10-bit Bayer RGGB MTISP Packed" } },
 	{ V4L2PixelFormat(V4L2_PIX_FMT_SBGGR12),
 		{ formats::SBGGR12, "12-bit Bayer BGBG/GRGR" } },
 	{ V4L2PixelFormat(V4L2_PIX_FMT_SGBRG12),
@@ -163,6 +171,14 @@ const std::map<V4L2PixelFormat, V4L2PixelFormat::Info> vpf2pf{
 		{ formats::SGRBG12_CSI2P, "12-bit Bayer GRGR/BGBG Packed" } },
 	{ V4L2PixelFormat(V4L2_PIX_FMT_SRGGB12P),
 		{ formats::SRGGB12_CSI2P, "12-bit Bayer RGRG/GBGB Packed" } },
+	{ V4L2PixelFormat(V4L2_PIX_FMT_MTISP_SBGGR12),
+		{ formats::SBGGR12_MTK, "12-bit Bayer BGGR MTISP Packed" } },
+	{ V4L2PixelFormat(V4L2_PIX_FMT_MTISP_SGBRG12),
+		{ formats::SGBRG12_MTK, "12-bit Bayer GBRG MTISP Packed" } },
+	{ V4L2PixelFormat(V4L2_PIX_FMT_MTISP_SGRBG12),
+		{ formats::SGRBG12_MTK, "12-bit Bayer GRBG MTISP Packed" } },
+	{ V4L2PixelFormat(V4L2_PIX_FMT_MTISP_SRGGB12),
+		{ formats::SRGGB12_MTK, "12-bit Bayer RGGB MTISP Packed" } },
 	{ V4L2PixelFormat(V4L2_PIX_FMT_SBGGR16),
 		{ formats::SBGGR16, "16-bit Bayer BGBG/GRGR" } },
 	{ V4L2PixelFormat(V4L2_PIX_FMT_SGBRG16),