Hi everyone,
This the fifth version of my patchset that contains:
- Integer menu controls [2],
- Selection IOCTL for subdevs [3],
- Sensor control changes [5,7],
- link_validate() media entity and V4L2 subdev pad ops,
- OMAP 3 ISP driver improvements [4],
- SMIA++ sensor driver,
- rm680/rm696 board code (a.k.a Nokia N9 and N950) and
- Other V4L2 and media improvements (see individual patches)
The Docbook documentation in HTML format can be found in [15] (v3
documentation available in [11] and v4 in [13]).
The issue with "ACTIVE" target names still needs to be addressed. The
current proposal is "CURRENT". To be discussed on IRC.
Changes to version 4 [16]:
- V4L2 / V4L2 subdev
- Documentation
- Spelling fixes
- Red lines in diagrams dotted instead of solid
- Proper ordering of raw bayer formats
- SMIA++ driver
- PLL code separated from the actual driver
- Source pads are always zero now
- Error handling fixes in nvm reading
- Try format pixel code handling fixes
- Miscellaneous code cleanups
- Media controller
- Dropped the patch to find entities; moved to omap3isp driver instead
- OMAP 3 ISP
- Find out external entity's pad number, don't assume zero (new patch)
- Small cleanups
- Entities in pipeline stored in struct isp_pipeline
Changes to version 3 [12] include:
- OMAP 3 ISP
- Rework ISP driver patches
- Remove code from isp_video_pipeline_validate in same patch as the
functionality is added elsewhere (old patch to remove leftovers
dropped)
- isp_video_streamon() error handling cleanups
- All pipeline validation performed before any s_straem subdev ops
- Resizer data rate check moved to link validation
- CCDC rate checked in isp_video_check_external_subdeva()
- Formats checked during link validation
- Remove means to set pixel rate (new patch)
- Don't set link_validate pad ops where the default is sufficient
- Media controller
- media_entity_pipeline_start() collects information on entities in
pipeline
- link validation error handling fix
- V4L2 / V4L2 subdev
- Less confusing selection example diagrams
- Selection documentation improvements (as also suggested by Laurent)
- SMIA++ driver
- Fixes according to Laurent's suggestions [14]
- Locking fixes and power handling cleanups
Changes to version 2 [10] include:
- V4L2
- Image source controls
- Documentation no longer refers to "pixel clock" in v4l2_mbus_framefmt
(this should have been the last reference to those!!)
- Capitalise first letters in control names
- Selections
- Use hex numbers for targets
- Return NULL instead of invalid pointer when accessing non-existend pads
in v4l2_subdev_get_try_{format,crop,compose} (new patch)
- Put link validation definitions in v4l2-subdev.h behind
#ifdef CONFIG_MEDIA_CONTROLLER ... #endif
- Spelling fixes (selections and 4cc guidelines)
- Change vdev_to_v4l2_subdev() return type to struct v4l2_subdev * (new
patch)
- SMIA++ driver
- Clock tree calculation fixes
- Control handler setup usage fixes at smiapp_open()
- Don't access non-existent pads
Changes to version 1 [8] include:
- OMAP 3 ISP driver
- Swapped order of csi receiver's lane definitions
- Rewrote omap 3 isp link validation patches almost completely
- Information on connected external entity collected to isp_pipeline
- Information collected during link checking and used at streamon
- Media entity link validation
- Error handling fixes
- SMIA++ driver
- Selection API bugfixes
- Report correct pixel order right from boot
- Move link rate control to subdev connected to subdev external to the
sensor (e.g. ISP's CSI-2 receiver)
- Introduce proper serialisation
- Deny changing some controls when streaming (flipping and link rate)
- Control handler setup moved from streamon time to first subdev open
- There is no source compose target
- Bugfixes
- Media bus pixel codes
- Documentation fix for dpcm compressed formats
- Added patch for 4CC guidelines (raw bayer only for now)
- Selections
- Improved selections documentation
- Added more selections examples
- Compose target is not available on source pads anymore [9]
- Dropped default targets
- V4L2
- Add documentation on link_validate()
- link_validate() and relater functions depends on
CONFIG_MEDIA_CONTROLLER
- Skip link validation for links on which stream_count was non-zero
- Do not validate link if entity's stream count is non-zero
- Use v4l2_subdev_link_validate_default() if no link_validate pad op
is set
- Allow changing control handler mutex: this enables a driver to provide
multiple subdevs but use only one mutex. Default mutex (part of struct
v4l2_ctrl_handler) is set in v4l2_ctrl_handler_init().
- Split image source class into two: image source and image processing
Changes to the RFC v1 [6] include:
- Integer controls:
- Target Linux 3.4 instead of 3.3
- Proper control type check in querymenu
- vivi compile fixes
- Subdev selections
- Pad try fields combined to single struct
- Correctly set sel.which based on crop->which in crop fall-back
- Subdev selection documentation
- Better explanation on image processing in subdevs
- Added a diagram to visualise subdev configuration
- Fixed DocBook syntax issues
- Mark VIDIOC_SUBDEV_S_CROP and VIDIOC_SUBDEV_G_CROP obsolete
- Pixel rate
- Pixel rate is now a 64-bit control, not part of v4l2_mbus_framefmt
- Unit for pixel rate is pixels / second
- Pixel rate is read-only
- Link frequency is now in Hz --- documented as such also
- Link validation instead of pipeline validation
- Each link is validated by calling link_validate op
- Added link validation op to media_entity_ops
- Link validation op in pad ops makes this easy for subdev drivers
- media_entity_pipeline_start() may return an error code now
- This might affect other drivers, but will warn in compilation.
No adverse effects are caused if the driver does not use
link_validate().
- OMAP 3 ISP
- Make lanecfg as part of the platform data structure, not pointer
- Document lane configuration structures
- Link validation moved to respective subdev drivers from ispvideo.c
- isp_validate_pipeline() removed
- SMIA++ driver
- Update pixel order based on vflip and hflip
- Cleanups in the main driver, register definitions and PLL code
- Depend on V4L2_V4L2_SUBDEV_API and MEDIA_CONTROLLER
- Use pr_* macros instead of printk
- Improved error handling for i2c_transfer()
- Removed useless definitions
- Don't access try crop / compose directly but use helper functions
- Add xshutdown to platform data
- Move driver under smiapp directory
- rm680 board code
- Use REGULATOR_SUPPLY() where possible
- Removed printk()'s
- Don't include private smiapp headers
References:
[1] http://www.spinics.net/lists/linux-omap/msg61295.html
[2] http://www.spinics.net/lists/linux-media/msg40796.html
[3] http://www.spinics.net/lists/linux-media/msg41503.html
[4] http://www.spinics.net/lists/linux-media/msg41542.html
[5] http://www.spinics.net/lists/linux-media/msg40861.html
[6] http://www.spinics.net/lists/linux-media/msg41765.html
[7] http://www.spinics.net/lists/linux-media/msg42848.html
[8] http://www.spinics.net/lists/linux-media/msg42991.html
[9] http://www.spinics.net/lists/linux-media/msg43810.html
[10] http://www.spinics.net/lists/linux-media/msg43888.html
[11] http://www.retiisi.org.uk/v4l2/tmp/media_api/
[12] http://www.spinics.net/lists/linux-media/msg44405.html
[13] http://www.retiisi.org.uk/v4l2/tmp/media_api2/
[14] http://www.spinics.net/lists/linux-media/msg44704.html
[15] http://wwww.retiisi.org.uk/v4l2/tmp/media_api3/
[16] http://www.spinics.net/lists/linux-media/msg44843.html
Kind regards,
--
Sakari Ailus
sakari.ailus@xxxxxx
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