[PATCH v2 5/7] doc_rst: media: New SDR formats PC16, PC18 & PC20
From: Ramesh Shanmugasundaram <hidden>
Date: 2016-12-21 08:10:36
Also in:
linux-media, linux-renesas-soc
Subsystem:
documentation, the rest · Maintainers:
Jonathan Corbet, Linus Torvalds
This patch adds documentation for the three new SDR formats V4L2_SDR_FMT_PCU16BE V4L2_SDR_FMT_PCU18BE V4L2_SDR_FMT_PCU20BE Signed-off-by: Ramesh Shanmugasundaram <ramesh.shanmugasundaram-kTT6dE0pTRh9uiUsa/gSgQ@public.gmane.org> --- .../media/uapi/v4l/pixfmt-sdr-pcu16be.rst | 55 ++++++++++++++++++++++ .../media/uapi/v4l/pixfmt-sdr-pcu18be.rst | 55 ++++++++++++++++++++++ .../media/uapi/v4l/pixfmt-sdr-pcu20be.rst | 55 ++++++++++++++++++++++ Documentation/media/uapi/v4l/sdr-formats.rst | 3 ++ 4 files changed, 168 insertions(+) create mode 100644 Documentation/media/uapi/v4l/pixfmt-sdr-pcu16be.rst create mode 100644 Documentation/media/uapi/v4l/pixfmt-sdr-pcu18be.rst create mode 100644 Documentation/media/uapi/v4l/pixfmt-sdr-pcu20be.rst
diff --git a/Documentation/media/uapi/v4l/pixfmt-sdr-pcu16be.rst b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu16be.rst
new file mode 100644
index 0000000..2de1b1a
--- /dev/null
+++ b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu16be.rst@@ -0,0 +1,55 @@ +.. -*- coding: utf-8; mode: rst -*- + +.. _V4L2-SDR-FMT-PCU16BE: + +****************************** +V4L2_SDR_FMT_PCU16BE ('PC16') +****************************** + +Planar complex unsigned 16-bit big endian IQ sample + +Description +=========== + +This format contains a sequence of complex number samples. Each complex +number consist of two parts called In-phase and Quadrature (IQ). Both I +and Q are represented as a 16 bit unsigned big endian number stored in +32 bit space. The remaining unused bits within the 32 bit space will be +padded with 0. I value starts first and Q value starts at an offset +equalling half of the buffer size (i.e.) offset = buffersize/2. Out of +the 16 bits, bit 15:2 (14 bit) is data and bit 1:0 (2 bit) can be any +value. + +**Byte Order.** +Each cell is one byte. + +.. flat-table:: + :header-rows: 1 + :stub-columns: 0 + + * - Offset: + - Byte B0 + - Byte B1 + - Byte B2 + - Byte B3 + * - start + 0: + - I'\ :sub:`0[13:6]` + - I'\ :sub:`0[5:0]; B1[1:0]=pad` + - pad + - pad + * - start + 4: + - I'\ :sub:`1[13:6]` + - I'\ :sub:`1[5:0]; B1[1:0]=pad` + - pad + - pad + * - ... + * - start + offset: + - Q'\ :sub:`0[13:6]` + - Q'\ :sub:`0[5:0]; B1[1:0]=pad` + - pad + - pad + * - start + offset + 4: + - Q'\ :sub:`1[13:6]` + - Q'\ :sub:`1[5:0]; B1[1:0]=pad` + - pad + - pad
diff --git a/Documentation/media/uapi/v4l/pixfmt-sdr-pcu18be.rst b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu18be.rst
new file mode 100644
index 0000000..da8b26b
--- /dev/null
+++ b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu18be.rst@@ -0,0 +1,55 @@ +.. -*- coding: utf-8; mode: rst -*- + +.. _V4L2-SDR-FMT-PCU18BE: + +****************************** +V4L2_SDR_FMT_PCU18BE ('PC18') +****************************** + +Planar complex unsigned 18-bit big endian IQ sample + +Description +=========== + +This format contains a sequence of complex number samples. Each complex +number consist of two parts called In-phase and Quadrature (IQ). Both I +and Q are represented as a 18 bit unsigned big endian number stored in +32 bit space. The remaining unused bits within the 32 bit space will be +padded with 0. I value starts first and Q value starts at an offset +equalling half of the buffer size (i.e.) offset = buffersize/2. Out of +the 18 bits, bit 17:2 (16 bit) is data and bit 1:0 (2 bit) can be any +value. + +**Byte Order.** +Each cell is one byte. + +.. flat-table:: + :header-rows: 1 + :stub-columns: 0 + + * - Offset: + - Byte B0 + - Byte B1 + - Byte B2 + - Byte B3 + * - start + 0: + - I'\ :sub:`0[17:10]` + - I'\ :sub:`0[9:2]` + - I'\ :sub:`0[1:0]; B2[5:0]=pad` + - pad + * - start + 4: + - I'\ :sub:`1[17:10]` + - I'\ :sub:`1[9:2]` + - I'\ :sub:`1[1:0]; B2[5:0]=pad` + - pad + * - ... + * - start + offset: + - Q'\ :sub:`0[17:10]` + - Q'\ :sub:`0[9:2]` + - Q'\ :sub:`0[1:0]; B2[5:0]=pad` + - pad + * - start + offset + 4: + - Q'\ :sub:`1[17:10]` + - Q'\ :sub:`1[9:2]` + - Q'\ :sub:`1[1:0]; B2[5:0]=pad` + - pad
diff --git a/Documentation/media/uapi/v4l/pixfmt-sdr-pcu20be.rst b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu20be.rst
new file mode 100644
index 0000000..b073be5
--- /dev/null
+++ b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu20be.rst@@ -0,0 +1,55 @@ +.. -*- coding: utf-8; mode: rst -*- +.. _V4L2-SDR-FMT-PCU20BE: + +****************************** +V4L2_SDR_FMT_PCU20BE ('PC20') +****************************** + +Planar complex unsigned 20-bit big endian IQ sample + +Description +=========== + +This format contains a sequence of complex number samples. Each complex +number consist of two parts called In-phase and Quadrature (IQ). Both I +and Q are represented as a 20 bit unsigned big endian number stored in +32 bit space. The remaining unused bits within the 32 bit space will be +padded with 0. I value starts first and Q value starts at an offset +equalling half of the buffer size (i.e.) offset = buffersize/2. Out of +the 20 bits, bit 19:2 (18 bit) is data and bit 1:0 (2 bit) can be any +value. + +**Byte Order.** +Each cell is one byte. + +.. flat-table:: + :header-rows: 1 + :stub-columns: 0 + + * - Offset: + - Byte B0 + - Byte B1 + - Byte B2 + - Byte B3 + * - start + 0: + - I'\ :sub:`0[19:12]` + - I'\ :sub:`0[11:4]` + - I'\ :sub:`0[3:0]; B2[3:0]=pad` + - pad + * - start + 4: + - I'\ :sub:`1[19:12]` + - I'\ :sub:`1[11:4]` + - I'\ :sub:`1[3:0]; B2[3:0]=pad` + - pad + * - ... + * - start + offset: + - Q'\ :sub:`0[19:12]` + - Q'\ :sub:`0[11:4]` + - Q'\ :sub:`0[3:0]; B2[3:0]=pad` + - pad + * - start + offset + 4: + - Q'\ :sub:`1[19:12]` + - Q'\ :sub:`1[11:4]` + - Q'\ :sub:`1[3:0]; B2[3:0]=pad` + - pad +
diff --git a/Documentation/media/uapi/v4l/sdr-formats.rst b/Documentation/media/uapi/v4l/sdr-formats.rst
index f863c08..2037f5b 100644
--- a/Documentation/media/uapi/v4l/sdr-formats.rst
+++ b/Documentation/media/uapi/v4l/sdr-formats.rst@@ -17,3 +17,6 @@ These formats are used for :ref:`SDR <sdr>` interface only. pixfmt-sdr-cs08 pixfmt-sdr-cs14le pixfmt-sdr-ru12le + pixfmt-sdr-pcu16be + pixfmt-sdr-pcu18be + pixfmt-sdr-pcu20be
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html