Hi Niklas, On Tuesday, 15 May 2018 03:56:33 EEST Niklas Söderlund wrote: > Hi, > > This is the latest incarnation of R-Car MIPI CSI-2 receiver driver. It's > based on top of the media-tree and are tested on Renesas Salvator-X and > Salvator-XS together with adv7482 and the now in tree rcar-vin driver :-) > > I hope this is the last incarnation of this patch-set, I do think it is > ready for upstream consumption :-) So do I. Even though you dropped Hans' reviewed-by tag due to changes in the hardware initialization code, I think the part that Hans cares about the most is the V4L2 API implementation, so I believe his review still applies. In my opinion the series has received the necessary review. Hans, would you like to take this through your tree, or should we send a pull request directly to Mauro ? I'd like the two patches to be merged in v4.18 if possible. > * Changes since v15 > - Merge struct phtw_mbps and struct phypll_hsfreqrange into a new struct > which maps a mpbs value to a register value, struct rcsi2_mbps_reg. > - Reduced number of loops and delay when waiting for LP-11 and > confirmation of PHTW write as suggested by Laurent. > - Dropped dev_dbg() printouts of the requested link speed. > - Fix small issues in comments. > - Remove unneeded () in for-loop condition in rcsi2_phtw_write_array(). > - Remove __refdata from declaration of 'static struct platform_driver > rcar_csi2_pdrv'. > - Update MODULE_DESCRIPTION to 'Renesas R-Car MIPI CSI-2 receiver > driver'. > - Fixed two erroneous values in hsfreqrange_h3_v3h_m3n[]. Thanks Jacopo > for spotting this! > - Max link speed for V3M and E3 are 1.125Gbps remove settings above that > limit in phtw_mbps_v3m_e3. This also changed in datasheet v1.0. > - Add review tags from Laurent and Maxime. > > * Changes since v14. > - Data sheet update changed init sequence for PHY forcing a restructure > of the driver. The restructure was so big I felt compel to drop all > review tags :-( > - The change was that the Renesas H3 procedure was aligned with other > SoC in the Gen3 family procedure. I had kept the rework as separate > patches and was planing to post once original driver with H3 and M3-W > support where merged. As review tags are dropped I chosen to squash > those patches into 2/2. > - Add support for Gen3 M3-N. > - Add support for Gen3 V3M. > - Set PHTC_TESTCLR when stopping the PHY. > - Revert back to the v12 and earlier phypll calculation as it turns out > it was correct after all. > - Added compatible string for R8A77965 and R8A77970. > - s/Port 0/port@0/ > - s/Port 1/port@1/ > - s/Endpoint 0/endpoint@0/ > > * Changes since v13 > - Change return rcar_csi2_formats + i to return &rcar_csi2_formats[i]. > - Add define for PHCLM_STOPSTATECKL. > - Update spelling in comments. > - Update calculation in rcar_csi2_calc_phypll() according to > https://linuxtv.org/downloads/v4l-dvb-apis/kapi/csi2.html. The one > before v14 did not take into account that 2 bits per sample is > transmitted. > - Use Geert's suggestion of (1 << priv->lanes) - 1 instead of switch > statement to set correct number of lanes to enable. > - Change hex constants in hsfreqrange_m3w_h3es1[] to lower case to match > style of rest of file. > - Switch to %u instead of 0x%x when printing bus type. > - Switch to %u instead of %d for priv->lanes which is unsigned. > - Add MEDIA_BUS_FMT_YUYV8_1X16 to the list of supported formats in > rcar_csi2_formats[]. > - Fixed bps for MEDIA_BUS_FMT_YUYV10_2X10 to 20 and not 16. > - Set INTSTATE after PL-11 is confirmed to match flow chart in > datasheet. > - Change priv->notifier.subdevs == NULL to !priv->notifier.subdevs. > - Add Maxime's and laurent's tags. > > * Changes since v12 > - Fixed spelling mistakes in commit messages and documentation patch, > thanks Laurent. > - Mark endpoints in port 1 as optional as it is allowed to not connect a > VIN to the CSI-2 and instead have it only use its parallel input > source (for those VIN that have one). > - Added Ack from Sakari, thanks! > - Media bus codes are u32 not unsigned int. > - Ignore error check for v4l2_subdev_call(sd, video, s_stream, 0) > - Do not set subdev host data as it's not used, > v4l2_set_subdev_hostdata(). > - Fixed spelling errors in commit message. > - Add SPDX header > - Rename badly named variable tmp to vcdt_part. > - Cache subdevice in bound callback instead of looking it up in the > media graph. By doing this rcar_csi2_sd_info() can be removed. > - Print unsigned using %u not %d. > - Call pm_runtime_enable() before calling v4l2_async_register_subdev(). > - Dropped of_match_ptr() as OF is required. > > * Changes since v11 > - Added missing call to v4l2_async_notifier_unregister(). > - Fixed missing reg popery in bindings documentation. > - Add Rob's ack to 01/02. > - Dropped 'media:' prefix from patch subjects as it seems they are added > first when a patch is picked up by the maintainer. > - Fixed typo in comment enpoint -> endpoint, thanks Hans. > - Added Hans Reviewed-by to driver. > > * Changes since v10 > - Renamed Documentation/devicetree/bindings/media/rcar-csi2.txt to > Documentation/devicetree/bindings/media/renesas,rcar-csi2.txt > - Add extra newline in rcar_csi2_code_to_fmt() > - Use locally stored format information instead of reading it from the > remote subdevice, Sakari pointed out that the pipeline is validated > before .s_stream() is called so this is safe. > - Do not check return from media_entity_to_v4l2_subdev() in > rcar_csi2_start(), Sakari pointed out it can't fail. Also move logic > to find the remote subdevice is moved to the only user of it, > rcar_csi2_calc_phypll(). > - Move pm_runtime_get_sync() and pm_runtime_put() to > rcar_csi2_s_stream() and remove rcar_csi2_s_power(). > - Add validation of pixel code to rcar_csi2_set_pad_format(). > - Remove static rcar_csi2_notify_unbind() as it only printed a debug > message. > > * Changes since v9 > - Add reset property to device tree example > - Use BIT(x) instead of (1 << x) > - Use u16 in struct phypll_hsfreqrange to pack struct better. > - Use unsigned int type for loop variable in rcar_csi2_code_to_fmt > - Move fields inside struct struct rcar_csi2_info and struct rcar_csi2 > to pack struct's tighter. > - Use %u instead of %d when printing __u32. > - Don't check return of platform_get_resource(), let > devm_ioremap_resource() handle it. > - Store quirk workaround for r8a7795 ES1.0 in the data field of struct > soc_device_attribute. > > Changes since v8: > - Updated bindings documentation, thanks Rob! > - Make use of the now in media-tree sub-notifier V4L2 API > - Add delay when resetting the IP to allow for a proper reset > - Fix bug in s_stream error path where the usage count was off if an > error was hit. > - Add support for H3 ES2.0 > > Changes since v7: > - Rebase on top of the latest incremental async patches. > - Fix comments on DT documentation. > - Use v4l2_ctrl_g_ctrl_int64() instead of v4l2_g_ext_ctrls(). > - Handle try formats in .set_fmt() and .get_fmt(). > - Don't call v4l2_device_register_subdev_nodes() as this is not needed > with the complete() callbacks synchronized. > - Fix line over 80 chars. > - Fix varies spelling mistakes. > > Changes since v6: > - Rebased on top of Sakaris fwnode patches. > - Changed of RCAR_CSI2_PAD_MAX to NR_OF_RCAR_CSI2_PAD. > - Remove assumption about unknown media bus type, thanks Sakari for > pointing this out. > - Created table for supported format information instead of scattering > this information around the driver, thanks Sakari! > - Small newline fixes and reduce some indentation levels > > Changes since v5: > - Make use of the incremental async subnotifer and helper to map DT > endpoint to media pad number. This moves functionality which > previously in the Gen3 patches for R-Car VIN driver to this R-Car > CSI-2 driver. This is done in preparation to support the ADV7482 > driver in development by Kieran which will register more then one > subdevice and the CSI-2 driver needs to cope wit this. Further more it > prepares the driver for another use-case where more then one subdevice > is present upstream for the CSI-2. > - Small cleanups. > - Add explicit include for linux/io.h, thanks Kieran. > > Changes since v4: > - Match SoC part numbers and drop trailing space in documentation, > thanks Geert for pointing this out. > - Clarify that the driver is a CSI-2 receiver by supervised > s/interface/receiver/, thanks Laurent. > - Add entries in Kconfig and Makefile alphabetically instead of append. > - Rename struct rcar_csi2 member swap to lane_swap. > - Remove macros to wrap calls to dev_{dbg,info,warn,err}. > - Add wrappers for ioread32 and iowrite32. > - Remove unused interrupt handler, but keep checking in probe that there > are a interrupt define in DT. > - Rework how to wait for LP-11 state, thanks Laurent for the great idea! > - Remove unneeded delay in rcar_csi2_reset() > - Remove check for duplicated lane id:s from DT parsing. Broken out to a > separate patch adding this check directly to v4l2_of_parse_endpoint(). > - Fixed rcar_csi2_start() to ask it's source subdevice for information > about pixel rate and frame format. With this change having > {set,get}_fmt operations became redundant, it was only used for > figuring out this out so dropped them. > - Tabulated frequency settings map. > - Dropped V4L2_SUBDEV_FL_HAS_DEVNODE it should never have been set. > - Switched from MEDIA_ENT_F_ATV_DECODER to > MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER as entity function. I can't > find a more suitable function, and what the hardware do is to fetch > video from an external chip and passes it on to a another SoC internal > IP it's sort of a formatter. > - Break out DT documentation and code in two patches. > > Changes since v3: > - Update DT binding documentation with input from Geert Uytterhoeven, > thanks > > Changes since v2: > - Added media control pads as this is needed by the new rcar-vin driver. > - Update DT bindings after review comments and to add r8a7796 support. > - Add get_fmt handler. > - Fix media bus format error s/YUYV8/UYVY8/ > > Changes since v1: > - Drop dependency on a pad aware s_stream operation. > - Use the DT bindings format "renesas,<soctype>-<device>", thanks Geert > for pointing this out. > > Niklas Söderlund (2): > rcar-csi2: add Renesas R-Car MIPI CSI-2 receiver documentation > rcar-csi2: add Renesas R-Car MIPI CSI-2 receiver driver > > .../bindings/media/renesas,rcar-csi2.txt | 101 ++ > MAINTAINERS | 1 + > drivers/media/platform/rcar-vin/Kconfig | 12 + > drivers/media/platform/rcar-vin/Makefile | 1 + > drivers/media/platform/rcar-vin/rcar-csi2.c | 1084 +++++++++++++++++ > 5 files changed, 1199 insertions(+) > create mode 100644 > Documentation/devicetree/bindings/media/renesas,rcar-csi2.txt create mode > 100644 drivers/media/platform/rcar-vin/rcar-csi2.c -- Regards, Laurent Pinchart
