Hello, following is a third version of a patchset converting s5p-fimc driver to the media controller API and control framework. Except fixing minor bugs in the sensor registration code, the first patch adding power management support has been significantly reworked. There is no yet support for a per frame power gating, I'd like to add it in 3.2 as it seem to require modfications of v4l-mem2mem framework. I'd like to get this patchset in v3.1, unless there are any issues pointed out. The changeset can be pulled from (within a few hours from now, after the repository synchronisation cron job runs): http://git.infradead.org/users/kmpark/linux-2.6-samsung branch: s5p-fimc-next Changes since v2: - reworked (runtime) power management; - added pm_runtime_get_sync/pm_runtime_put around sensor registration code so the clock for sensors is enabled during host driver's probe(); - reworked try_crop operation handler to support multiple of the prescaler ratio relationship constraint for format at the sink pad; - corrected fimc_md_unregister_entities() function Below is an original cover letter of v2. ----------------------------------------------------------------------------- In this version the ioctl handlers for format setting at the video node and the FIMC subdev has been reworked so they use common functions for capture data format adjustment to the hardware capabilities. This prevent trouble from any differences in handling ioctls at the subdev and the video node when those are used simultaneously. Except that I have killed a few bugs that jumped out when the driver was tried to be used as a kernel module. Additionally to allow the driver to be used in V4L2 video node compatibility mode (when sensor subdev is configured by the host driver rather that directly by the applications through /dev/v4l-subdev*) a sysfs entry is added. All that needs to be done to disable sensors configuration from /dev/video* node level, in order to use sub-device user space API, is to write correct string to s5p-fimc-md platform device "subdev_conf_mode" sysfs entry, e.g. echo sub-dev > /sys/devices/platform/s5p-fimc-md/subdev_conf_mode or to revert: echo vid-dev > /sys/devices/platform/s5p-fimc-md/subdev_conf_mode The following procedure is adopted for format and crop/composition configuration at the FIMC.{n} (capture) subdevs: 1) set format at sink pad (this will reset sink crop rectangle) 2) set crop rectangle at sink pad (optional) 3) set rotate control (optional) 4) set crop (composition) at source pad (optional). Here scaling constraints are checked according to whether sink pad crop has been set or not and whether 90/270 deg rotation is set. 5) set format at source pad 6) set format at corresponding video node Rotation can also be changed while streaming, in this case when 90/270 deg rotation is attempted to be set and scaling bounds are exceeded (max. 64x downscaling) s_ctrl returns EINVAL. I have tried this driver with v4l-compliance and it returned only 1 fail on S/G_PRIORITY. This patch set depends on my previous s5p-fimc bugfixes, available at: http://git.infradead.org/users/kmpark/linux-2.6-samsung/shortlog/refs/heads/s5p-fimc as well as the control framework updates from Hans Verkuil: http://www.spinics.net/lists/linux-media/msg33552.html (patch 1...6, 8, 11). Full source tree can be found at: http://git.infradead.org/users/kmpark/linux-2.6-samsung branch: s5p-fimc-next I have skipped patch one patch in this series comparing to first version: s5p-fimc: Add support for runtime PM in the mem-to-mem driver This patch is available in the above git repository. I need to work a bit more on that one. Comments and suggestions are welcome! ------------------------------------------------------------------------------ Thanks, -- Sylwester Nawrocki Samsung Poland R&D Center -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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