12-bit general data acquisition via CCDC.
Attach data lines to the ribbon cable of the Gumstix Overo (or any OMAP device).
The device must generate HD/VD (Horizontal-Sync/Vertical-Sync) signals and media-ctl must be used to configure the CCDC pipeline. The size of the capture must match the HD/VD signals being generated. The device should be able to buffer (i.e. hardware FIFO) a few "frames" of data so that a pause can be issued during VD.
yavta may be used to test the data acquisition.
GPIO23 is used to signal to the hardware to turn capture on or off. By default it is on.
Send a message via github if interested in further development (i.e. having the device accept VD/HD from the OMAP-ISP rather than the device generating VD/HD.
git clone git://github.com/fastr/linux-2.6.git
cd linux-2.6
git checkout overo-fsr172x-2.6.36
ARCH=arm
CROSS_COMPILE=~/overo-oe/tmp/sysroots/i686-linux/usr/armv7a/bin/arm-angstrom-linux-gnueabi-
make overo_fsr172x_defconfig
make uImage
Obtain the choice kernels
git clone git://github.com/mirrors/linux-2.6.git
git remote remane origin torvalds
git remote add fastr git://github.com/fastr/linux-2.6.git
git remote add sakoman git://www.sakoman.com/git/linux-omap-2.6
git remote -v
Checkout local copies of our favorite branches / tags
git fetch torvalds
git fetch torvalds --tags
git checkout -b torvalds-2.6.36 tags/v2.6.36
git fetch sakoman
git checkout -b sakoman-2.6.36 sakoman/omap-2.6.36
git fetch fastr
git checkout -b fsr172x-2.6.36 fastr/fsr172x-2.6.36
Resolve the best of all worlds
git checkout torvalds-2.6.36
git branch overo-fsr172x-2.6.36
git checkout overo-fsr172x-2.6.36
git merge fsr172x-2.6.36
git merge sakoman-2.6.36 # git thinks there is a conflict, but it's just an addition in the same place
git mergetool # just delete the HEAD<<<<, ====, xyz>>>>>> stuff, it's just an addition
git add arch/arm/mach-omap2/board-overo.c
git commit -m "added fsr172x general data acquisition support to gumstix overo"
git push origin overo-fsr172x-2.6.36
git remote set-head fastr overo-fsr172x-2.6
mkdir fsr172x.patches
tar xf omap3isp-fsr172x-patches.tar.gz -C fsr172x.patches
cd linux-2.6
git checkout torvalds-2.6.36
git branch fsr172x-2.6.36
git checkout fsr172x-2.6.36
git am ../fsr172x.patches/*
Applying: v4l: Share code between video_usercopy and video_ioctl2
Applying: v4l: subdev: Don't require core operations
Applying: v4l: subdev: Merge v4l2_i2c_new_subdev_cfg and v4l2_i2c_new_subdev
Applying: v4l: subdev: Add device node support
Applying: v4l: subdev: Uninline the v4l2_subdev_init function
Applying: v4l: subdev: Control ioctls support
Applying: v4l: subdev: Events support
Applying: media: Media device node support
Applying: media: Media device
/home/fastr/linux-2.6/.git/rebase-apply/patch:80: new blank line at EOF.
+
warning: 1 line adds whitespace errors.
Applying: media: Entities, pads and links
/home/fastr/linux-2.6/.git/rebase-apply/patch:76: new blank line at EOF.
+
warning: 1 line adds whitespace errors.
Applying: media: Entity graph traversal
/home/fastr/linux-2.6/.git/rebase-apply/patch:11: new blank line at EOF.
+
warning: 1 line adds whitespace errors.
Applying: media: Reference count and power handling
/home/fastr/linux-2.6/.git/rebase-apply/patch:13: new blank line at EOF.
+
warning: 1 line adds whitespace errors.
Applying: media: Media device information query
Applying: media: Entities, pads and links enumeration
Applying: media: Links setup
Applying: media: Entity locking and pipeline management
Applying: v4l: Add a media_device pointer to the v4l2_device structure
Applying: v4l: Make video_device inherit from media_entity
Applying: v4l: Make v4l2_subdev inherit from media_entity
Applying: v4l: Move the media/v4l2-mediabus.h header to include/linux
Applying: v4l: Replace enums with fixed-sized fields in public structure
Applying: v4l: Rename V4L2_MBUS_FMT_GREY8_1X8 to V4L2_MBUS_FMT_Y8_1X8
Applying: v4l: Group media bus pixel codes by types and sort them alphabetically
Applying: v4l: Add 8-bit YUYV on 16-bit bus and SGRBG10 media bus pixel codes
Applying: v4l: Add remaining RAW10 patterns w DPCM pixel code variants
Applying: v4l: Create v4l2 subdev file handle structure
Applying: v4l: v4l2_subdev pad-level operations
Applying: v4l: v4l2_subdev userspace format API - documentation binary files
Applying: v4l: v4l2_subdev userspace format API
Applying: v4l: v4l2_subdev userspace frame interval API
Applying: v4l: v4l2_subdev userspace crop API
Applying: v4l: subdev: Generic ioctl support
Applying: v4l: Load I2C modules based on modalias
Applying: v4l: Remove module_name argument to the v4l2_i2c_new_subdev* functions
Applying: V4L/DVB: v4l: Use v4l2_get_subdevdata instead of accessing v4l2_subdev::priv
Applying: V4L/DVB: v4l: Add a v4l2_subdev host private data field
Applying: ARM: OMAP3: Update Camera ISP definitions for OMAP3630
Applying: omap3: Export omap3isp platform device structure
Applying: OMAP3 ISP driver
Applying: omap3isp: Rebase on top of 2.6.36-rc5
Applying: omap3isp: Update to the latest media controller API
Applying: v4l: Add missing 12 bits bayer media bus formats
Applying: v4l: Add 12 bits bayer pixel formats
Applying: omap3isp: Add 12 bit bayer support at the CCDC input
git add README.md
git commit -m "added fsr172x general data acquisition support to omap"
git push origin fsr172x-2.6.36