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[86.13.91.161]) by smtp.gmail.com with ESMTPSA id w18sm16956590wrl.62.2022.02.15.15.07.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 15 Feb 2022 15:07:49 -0800 (PST) From: Daniel Scally To: linux-media@vger.kernel.org Cc: yong.zhi@intel.com, sakari.ailus@linux.intel.com, bingbu.cao@intel.com, tian.shu.qiu@intel.com, andriy.shevchenko@linux.intel.com, hverkuil-cisco@xs4all.nl Subject: [PATCH 01/10] media: uapi: Add IPU3 packed Y10 format Date: Tue, 15 Feb 2022 23:07:28 +0000 Message-Id: <20220215230737.1870630-2-djrscally@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220215230737.1870630-1-djrscally@gmail.com> References: <20220215230737.1870630-1-djrscally@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Some platforms with an Intel IPU3 have an IR sensor producing 10 bit greyscale format data that is transmitted over a CSI-2 bus to a CIO2 device - this packs the data into 32 bytes per 25 pixels. Detail that format. Signed-off-by: Daniel Scally Reviewed-by: Nicolas Dufresne --- .../userspace-api/media/v4l/pixfmt-yuv-luma.rst | 14 +++++++++++++- drivers/media/v4l2-core/v4l2-ioctl.c | 1 + include/uapi/linux/videodev2.h | 1 + 3 files changed, 15 insertions(+), 1 deletion(-) diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst index 8ebd58c3588f..5465ce3bb533 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst @@ -48,6 +48,17 @@ are often referred to as greyscale formats. - ... - ... + * .. _V4L2-PIX-FMT-IPU3-Y10: + + - ``V4L2_PIX_FMT_IPU3_Y10`` + - 'ip3y' + + - Y'\ :sub:`0`\ [7:0] + - Y'\ :sub:`1`\ [5:0] Y'\ :sub:`0`\ [9:8] + - Y'\ :sub:`2`\ [3:0] Y'\ :sub:`1`\ [9:6] + - Y'\ :sub:`3`\ [1:0] Y'\ :sub:`2`\ [9:4] + - Y'\ :sub:`3`\ [9:2] + * .. _V4L2-PIX-FMT-Y10: - ``V4L2_PIX_FMT_Y10`` @@ -133,4 +144,5 @@ are often referred to as greyscale formats. For the Y16 and Y16_BE formats, the actual sampling precision may be lower than 16 bits. For example, 10 bits per pixel uses values in the range 0 to - 1023. + 1023. For the ip3y format 25 pixels are packed into 32 bytes, which leaves + the 6 most significant bits of the last byte padded with 0. diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 642cb90f457c..89691bbb372d 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -1265,6 +1265,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break; case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break; case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break; + case V4L2_PIX_FMT_IPU3_Y10: descr = "10-bit greyscale (IPU3 Packed)"; break; case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break; case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break; case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break; diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index df8b9c486ba1..b378c7e37eac 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -569,6 +569,7 @@ struct v4l2_pix_format { /* Grey bit-packed formats */ #define V4L2_PIX_FMT_Y10BPACK v4l2_fourcc('Y', '1', '0', 'B') /* 10 Greyscale bit-packed */ #define V4L2_PIX_FMT_Y10P v4l2_fourcc('Y', '1', '0', 'P') /* 10 Greyscale, MIPI RAW10 packed */ +#define V4L2_PIX_FMT_IPU3_Y10 v4l2_fourcc('i', 'p', '3', 'y') /* IPU3 packed 10-bit greyscale */ /* Palette formats */ #define V4L2_PIX_FMT_PAL8 v4l2_fourcc('P', 'A', 'L', '8') /* 8 8-bit palette */