From: Nick Dyer <nick.dyer@itdev.co.uk>
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Hans Verkuil <hverkuil@xs4all.nl>
Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-media@vger.kernel.org,
Benjamin Tissoires <benjamin.tissoires@redhat.com>,
Benson Leung <bleung@chromium.org>,
Alan Bowens <Alan.Bowens@atmel.com>,
Javier Martinez Canillas <javier@osg.samsung.com>,
Chris Healy <cphealy@gmail.com>,
Henrik Rydberg <rydberg@bitmath.org>,
Andrew Duggan <aduggan@synaptics.com>,
James Chen <james.chen@emc.com.tw>, Dudley Du <dudl@cypress.com>,
Andrew de los Reyes <adlr@chromium.org>,
sheckylin@chromium.org, Peter Hutterer <peter.hutterer@who-t.net>,
Florian Echtler <floe@butterbrot.org>,
mchehab@osg.samsung.com, Nick Dyer <nick.dyer@itdev.co.uk>
Subject: [PATCH v3 2/8] [media] Add signed 16-bit pixel format
Date: Wed, 1 Jun 2016 17:39:46 +0100 [thread overview]
Message-ID: <1464799192-28034-3-git-send-email-nick.dyer@itdev.co.uk> (raw)
In-Reply-To: <1464799192-28034-1-git-send-email-nick.dyer@itdev.co.uk>
This will be used for output of raw touch delta data. This format is
used by Atmel maXTouch (atmel_mxt_ts) and also Synaptics RMI4.
Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk>
---
Documentation/DocBook/media/v4l/pixfmt-ys16.xml | 79 +++++++++++++++++++++++++
Documentation/DocBook/media/v4l/pixfmt.xml | 1 +
drivers/media/v4l2-core/v4l2-ioctl.c | 1 +
include/uapi/linux/videodev2.h | 1 +
4 files changed, 82 insertions(+)
create mode 100644 Documentation/DocBook/media/v4l/pixfmt-ys16.xml
diff --git a/Documentation/DocBook/media/v4l/pixfmt-ys16.xml b/Documentation/DocBook/media/v4l/pixfmt-ys16.xml
new file mode 100644
index 0000000..f92d65e
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/pixfmt-ys16.xml
@@ -0,0 +1,79 @@
+<refentry id="V4L2-PIX-FMT-YS16">
+ <refmeta>
+ <refentrytitle>V4L2_PIX_FMT_YS16 ('YS16')</refentrytitle>
+ &manvol;
+ </refmeta>
+ <refnamediv>
+ <refname><constant>V4L2_PIX_FMT_YS16</constant></refname>
+ <refpurpose>Grey-scale image</refpurpose>
+ </refnamediv>
+ <refsect1>
+ <title>Description</title>
+
+ <para>This is a signed grey-scale image with a depth of 16 bits per
+pixel. The most significant byte is stored at higher memory addresses
+(little-endian).</para>
+
+ <example>
+ <title><constant>V4L2_PIX_FMT_YS16</constant> 4 × 4
+pixel image</title>
+
+ <formalpara>
+ <title>Byte Order.</title>
+ <para>Each cell is one byte.
+ <informaltable frame="none">
+ <tgroup cols="9" align="center">
+ <colspec align="left" colwidth="2*" />
+ <tbody valign="top">
+ <row>
+ <entry>start + 0:</entry>
+ <entry>Y'<subscript>00low</subscript></entry>
+ <entry>Y'<subscript>00high</subscript></entry>
+ <entry>Y'<subscript>01low</subscript></entry>
+ <entry>Y'<subscript>01high</subscript></entry>
+ <entry>Y'<subscript>02low</subscript></entry>
+ <entry>Y'<subscript>02high</subscript></entry>
+ <entry>Y'<subscript>03low</subscript></entry>
+ <entry>Y'<subscript>03high</subscript></entry>
+ </row>
+ <row>
+ <entry>start + 8:</entry>
+ <entry>Y'<subscript>10low</subscript></entry>
+ <entry>Y'<subscript>10high</subscript></entry>
+ <entry>Y'<subscript>11low</subscript></entry>
+ <entry>Y'<subscript>11high</subscript></entry>
+ <entry>Y'<subscript>12low</subscript></entry>
+ <entry>Y'<subscript>12high</subscript></entry>
+ <entry>Y'<subscript>13low</subscript></entry>
+ <entry>Y'<subscript>13high</subscript></entry>
+ </row>
+ <row>
+ <entry>start + 16:</entry>
+ <entry>Y'<subscript>20low</subscript></entry>
+ <entry>Y'<subscript>20high</subscript></entry>
+ <entry>Y'<subscript>21low</subscript></entry>
+ <entry>Y'<subscript>21high</subscript></entry>
+ <entry>Y'<subscript>22low</subscript></entry>
+ <entry>Y'<subscript>22high</subscript></entry>
+ <entry>Y'<subscript>23low</subscript></entry>
+ <entry>Y'<subscript>23high</subscript></entry>
+ </row>
+ <row>
+ <entry>start + 24:</entry>
+ <entry>Y'<subscript>30low</subscript></entry>
+ <entry>Y'<subscript>30high</subscript></entry>
+ <entry>Y'<subscript>31low</subscript></entry>
+ <entry>Y'<subscript>31high</subscript></entry>
+ <entry>Y'<subscript>32low</subscript></entry>
+ <entry>Y'<subscript>32high</subscript></entry>
+ <entry>Y'<subscript>33low</subscript></entry>
+ <entry>Y'<subscript>33high</subscript></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </informaltable>
+ </para>
+ </formalpara>
+ </example>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/pixfmt.xml b/Documentation/DocBook/media/v4l/pixfmt.xml
index 5a08aee..f3e3e6d 100644
--- a/Documentation/DocBook/media/v4l/pixfmt.xml
+++ b/Documentation/DocBook/media/v4l/pixfmt.xml
@@ -1619,6 +1619,7 @@ information.</para>
&sub-y12;
&sub-y10b;
&sub-y16;
+ &sub-ys16;
&sub-y16-be;
&sub-y8i;
&sub-y12i;
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 28e5be2..ecf7e0b 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1164,6 +1164,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break;
case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break;
case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break;
+ case V4L2_PIX_FMT_YS16: descr = "16-bit Greyscale (Signed)"; break;
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_PAL8: descr = "8-bit Palette"; break;
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 8f95191..e0125cf 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -493,6 +493,7 @@ struct v4l2_pix_format {
#define V4L2_PIX_FMT_Y12 v4l2_fourcc('Y', '1', '2', ' ') /* 12 Greyscale */
#define V4L2_PIX_FMT_Y16 v4l2_fourcc('Y', '1', '6', ' ') /* 16 Greyscale */
#define V4L2_PIX_FMT_Y16_BE v4l2_fourcc_be('Y', '1', '6', ' ') /* 16 Greyscale BE */
+#define V4L2_PIX_FMT_YS16 v4l2_fourcc('Y', 'S', '1', '6') /* signed 16-bit Greyscale */
/* Grey bit-packed formats */
#define V4L2_PIX_FMT_Y10BPACK v4l2_fourcc('Y', '1', '0', 'B') /* 10 Greyscale bit-packed */
--
2.5.0
next prev parent reply other threads:[~2016-06-01 16:40 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-01 16:39 [PATCH v3 0/8] Input: atmel_mxt_ts - output raw touch diagnostic data via V4L Nick Dyer
2016-06-01 16:39 ` [PATCH v3 1/8] Input: atmel_mxt_ts - add support for T37 diagnostic data Nick Dyer
2016-06-01 18:12 ` Dmitry Torokhov
2016-06-01 16:39 ` Nick Dyer [this message]
2016-06-01 16:39 ` [PATCH v3 3/8] [media] v4l2-core: Add VFL_TYPE_TOUCH_SENSOR Nick Dyer
2016-06-01 16:39 ` [PATCH v3 4/8] Input: atmel_mxt_ts - output diagnostic debug via v4l2 device Nick Dyer
2016-06-01 18:14 ` Dmitry Torokhov
2016-06-01 16:39 ` [PATCH v3 5/8] Input: atmel_mxt_ts - read touchscreen size Nick Dyer
2016-06-01 16:39 ` [PATCH v3 6/8] Input: atmel_mxt_ts - handle diagnostic data orientation Nick Dyer
2016-06-01 16:39 ` [PATCH v3 7/8] Input: atmel_mxt_ts - add diagnostic data support for mXT1386 Nick Dyer
2016-06-01 18:15 ` Dmitry Torokhov
2016-06-01 16:39 ` [PATCH v3 8/8] Input: atmel_mxt_ts - add support for reference data Nick Dyer
2016-06-01 18:17 ` [PATCH v3 0/8] Input: atmel_mxt_ts - output raw touch diagnostic data via V4L Dmitry Torokhov
2016-06-02 15:14 ` Nick Dyer
2016-06-13 16:40 ` Nick Dyer
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