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Message-ID: <e910e64a-de76-a78a-82cf-0516dfa5a1f1@collabora.com>
Date: Thu, 4 Jul 2019 16:40:37 -0300
From: Helen Koike <helen.koike@...labora.com>
To: linux-rockchip@...ts.infradead.org, linux-media@...r.kernel.org
Cc: devicetree@...r.kernel.org, eddie.cai.linux@...il.com,
mchehab@...nel.org, heiko@...ech.de, jacob-chen@...wrt.com,
jeffy.chen@...k-chips.com, zyc@...k-chips.com,
linux-kernel@...r.kernel.org, tfiga@...omium.org,
laurent.pinchart@...asonboard.com, sakari.ailus@...ux.intel.com,
kernel@...labora.com, ezequiel@...labora.com,
linux-arm-kernel@...ts.infradead.org, zhengsq@...k-chips.com,
Zheng Yang <zhengyang@...k-chips.com>,
Tony Xie <tony.xie@...k-chips.com>,
Hans Verkuil <hverkuil@...all.nl>
Subject: Re: [PATCH v7 00/14] Rockchip ISP1 Driver
On 7/3/19 4:08 PM, Helen Koike wrote:
> Hello,
>
> I'm re-sending a new version of ISP(Camera) v4l2 driver for rockchip
> rk3399 SoC.
>
> It is not perfect yet (see known issues below), but I'm sending in case
> some other people already wants to start playing with it.
> I believe de main design is ok (please let me know if
> it is not) and it would be great to get some reviews already.
>
> This patchset is also available at:
> https://gitlab.collabora.com/koike/linux/tree/rockchip/isp/v7
>
> Libcamera patched to work with this version:
> https://gitlab.collabora.com/koike/libcamera
> (I'll also sent it to the libcamera dev mailing list)
>
> I tested on the rockpi 4 with a rpi v1.3 sensor and also with the
> Scarlet Chromebook.
> Images from the Scarlet are a bit dark and green for some reason, but I
> believe it's a problem in the sensor's drivers as images from the
> rockpi looks ok.
Hi,
[dropping some people in CC, I should be more careful with patman]
Just to be easier to review, follow below the media topology in the Scarlet:
media-ctl --print-dot -> file available at: http://ix.io/1NIH
root@...ian:~# media-ctl -p
Media controller API version 5.2.0
Media device information
------------------------
driver rkisp1
model rkisp1
serial
bus info platform: rkisp1
hw revision 0x0
driver version 5.2.0
Device topology
- entity 1: rkisp1-isp-subdev (4 pads, 6 links)
type V4L2 subdev subtype Unknown flags 0
device node name /dev/v4l-subdev0
pad0: Sink
[fmt:SBGGR10_1X10/1920x1080 field:none
crop.bounds:(0,0)/1920x1080
crop:(0,0)/800x600]
<- "ov2685 7-003c":0 []
<- "ov5695 7-0036":0 [ENABLED]
pad1: Sink
[fmt:FIXED/800x600 field:none]
<- "rkisp1-input-params":0 []
pad2: Source
[fmt:YUYV8_2X8/800x600 field:none
crop.bounds:(0,0)/800x600
crop:(0,0)/800x600]
-> "rkisp1_selfpath":0 []
-> "rkisp1_mainpath":0 [ENABLED]
pad3: Source
[fmt:FIXED/800x600 field:none]
-> "rkisp1-statistics":0 []
- entity 6: rkisp1_mainpath (1 pad, 1 link)
type Node subtype V4L flags 0
device node name /dev/video0
pad0: Sink
<- "rkisp1-isp-subdev":2 [ENABLED]
- entity 10: rkisp1_selfpath (1 pad, 1 link)
type Node subtype V4L flags 0
device node name /dev/video1
pad0: Sink
<- "rkisp1-isp-subdev":2 []
- entity 14: rkisp1-statistics (1 pad, 1 link)
type Node subtype V4L flags 0
device node name /dev/video2
pad0: Sink
<- "rkisp1-isp-subdev":3 []
- entity 18: rkisp1-input-params (1 pad, 1 link)
type Node subtype V4L flags 0
device node name /dev/video3
pad0: Source
-> "rkisp1-isp-subdev":1 []
- entity 22: ov2685 7-003c (1 pad, 1 link)
type V4L2 subdev subtype Sensor flags 0
device node name /dev/v4l-subdev1
pad0: Source
[fmt:SBGGR10_1X10/1600x1200 field:none]
-> "rkisp1-isp-subdev":0 []
- entity 24: ov5695 7-0036 (1 pad, 1 link)
type V4L2 subdev subtype Sensor flags 0
device node name /dev/v4l-subdev2
pad0: Source
[fmt:SBGGR10_1X10/1920x1080 field:none]
-> "rkisp1-isp-subdev":0 [ENABLED]
Thanks
Helen
>
> The main differences from previous version are (in a macro pov):
> ----------------------------------------------------------------
> - dphy specific code migrated to drivers/phy
> - design change: droped the subdevice for the interface. Now, in the
> media topology, the sensors connect directly to the ISP1.
> - v4l2-compliance fixes
> - dropped rk3288 (as I'm not testing it)
> - dropped txrx dphy support (as I'm not testing it and it requires a bit
> more work to support dsi too)
> - interrupts and hw config fixes
> - minor bug fixes and cleanups
> - I added myself in the MAINTAINERS, as I'm not sure if previous people
> still wants to maintain it, please let me know if I should keep the old
> names there.
>
> Known issues:
> -------------
> - Reloading the module doesn't work (there is some missing cleanup when
> unloading)
> - When capturing in bayer format, changing the size doesn't seem to
> affect the image.
> - crop needs more tests
> - v4l2-compliance error:
> fail: v4l2-test-controls.cpp(824): subscribe event for control 'Image Processing Controls' failed
> test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: FAIL
> It seems that if controls are supported, v4l2-compliance says that
> controls of type 'Image Processing Controls' are mandatory, is this
> correct?
> - It seems there are still some issues with interrupts, but I couldn't
> isolate them yet.
>
> Reasoning for the design change:
> --------------------------------
> In the previous version, the isp subdevice call the mipidphy_g_mbus
> from rkisp1.c, so it can get
> informations from the sensor such as the type of mbus (V4L2_MBUS_BT656,
> V4L2_MBUS_PARALLEL or V4L2_MBUS_CSI2_CPHY), the number of csi2 lanes,
> flags (V4L2_MBUS_PCLK_SAMPLE_RISING, V4L2_MBUS_VSYNC_ACTIVE_LOW or
> V4L2_MBUS_HSYNC_ACTIVE_LOW). And the isp driver uses those info to configure
> the hardware properly.
>
> These information come from the DT node of the sensor. And the current
> implementation is propagating this information from the sensor to the isp
> through this mipidphy_g_mbus_config() (thus the hack)
>
> * 1st attempt to solve this hack) Separating the interface code from the isp.
>
> With the topology:
>
> isp -> csi2 -> sensor
>
> I was trying to migrate the CSI2 hardware configuration to the csi2 subdevice code.
> But the problem I found was that in the DT, the csi2 regs is in the middle of the isp1
> regs, and declaring the same "regs = <>" in both nodes (isp0 and csi2) is no good.
>
> * 2nd attempt) flatening the DT
> So instead of having two DT nodes (isp0 and csi2), we can have a single node, similar
> to omap3isp.
> And we can have a property, "rk,phy-type" that defines the interface (csi2, bt656 or parallel).
>
> But, now my question is: can the isp be connected to multiple interfaces at a
> time? If yes, then this is not a good solution (as we won't be able to describe
> multiple interfaces in the DT node).
>
> * 3rd attemp - WIP) get rid of the interface subdevice (chosen design)
> Is there a reason to have the topology like:
>
> isp -> interface - - -> sensor1
> | |--------> sensor2
> | - - - - - - > sensor3
>
> (only one sensor can be active at a time)
>
> ?
>
> Would it be ok if I just hide the interface from the topology? Like:
>
> isp - - - - - -> sensor1
> | |-----------> sensor2
> |- - - - - - - > sensor3
>
> Like this, I could cleanup a bunch of v4l2 code from the interface node,
> the isp would know the active sensor (and its configs), and it can
> configure everything itself.
>
> I don't really see a big reason to expose the interface (csi2,
> bt656 or parallel) in the topology.
> Unless I'm missing something.
>
> Previous changelog:
> -------------------
>
> changes in V6:
> - add mipi txrx phy support
> - remove bool and enum from uapi header
> - add buf_prepare op
> - correct some spelling problems
> - return all queued buffers when starting stream failed
>
> changes in V5: Sync with local changes,
> - fix the SP height limit
> - speed up the second stream capture
> - the second stream can't force sync for rsz when start/stop streaming
> - add frame id to param vb2 buf
> - enable luminance maximum threshold
>
> changes in V4:
> - fix some bugs during development
> - move quantization settings to rkisp1 subdev
> - correct some spelling problems
> - describe ports in dt-binding documents
>
> changes in V3:
> - add some comments
> - fix wrong use of v4l2_async_subdev_notifier_register
> - optimize two paths capture at a time
> - remove compose
> - re-struct headers
> - add a tmp wiki page: http://opensource.rock-chips.com/wiki_Rockchip-isp1
>
> changes in V2:
> mipi-phy:
> - use async probing
> - make it be a child device of the GRF
> isp:
> - add dummy buffer
> - change the way to get bus configuration, which make it possible to
> add parallel sensor support in the future(without mipi-phy driver).
>
> ------------------
>
> Changes in v7:
> - s/IPU3/RK_ISP1
> - s/correspond/corresponding
> - s/use/uses
> - s/docuemnt/document
> - Fix checkpatch errors (lines over 80 and SPDX)
> - Add TODO to improve docs
> - Migrate dphy specific code from
> drivers/media/platform/rockchip/isp1/mipi_dphy_sy.c
> to drivers/phy/rockchip/phy-rockchip-dphy.c
> - Drop support for rk3288
> - Drop support for dphy txrx
> - code styling and checkpatch fixes
> - fixed warning because of unknown entity type
> - fixed v4l2-compliance errors regarding rkisp1 formats, try formats
> and default values
> - fix typo riksp1/rkisp1
> - redesign: remove mipi/csi subdevice, sensors connect directly to the
> isp subdevice in the media topology now. As a consequence, remove the
> hack in mipidphy_g_mbus_config() where information from the sensor was
> being propagated through the topology.
> - From the old dphy:
> * cache get_remote_sensor() in s_stream
> * use V4L2_CID_PIXEL_RATE instead of V4L2_CID_LINK_FREQ
> - Replace stream state with a boolean
> - code styling and checkpatch fixes
> - fix stop_stream (return after calling stop, do not reenable the stream)
> - fix rkisp1_isp_sd_get_selection when V4L2_SUBDEV_FORMAT_TRY is set
> - fix get format in output (isp_sd->out_fmt.mbus_code was being ignored)
> - s/intput/input
> - remove #define sd_to_isp_sd(_sd), add a static inline as it will be
> reused by the capture
> - s/strlcpy/strscpy
> - sort out the locks in isp stats
> - code styling and checkpatch fixes
> - s/strlcpy/strscpy
> - s/strcpy/strscpy
> - fix config lsc error
> LSC data table size is 17x17, but when configuring data to ISP,
> should be aligned to 18x17. That means every last data of last
> line should be filled with 0, and not filled with the data of
> next line.
> - Update new ISP parameters immediately
> For those sub modules that have shadow registers in core isp, the
> new programing parameters would not be active if both
> CIF_ISP_CTRL_ISP_CFG_UPD_PERMANENT and CFG_UPD are not set. Now
> we configure CFG_UPD to force update the shadow registers when new
> ISP parameters are configured.
> - fix some ISP parameters config error
> Some ISP parameter config functions may override the old enable
> bit value, because the enable bits of these modules are in the
> same registers with parameters. So we should save the old enable
> bits firstly.
> - code styling and checkpatch fixes
> - s/strlcpy/strscpy
> - Fix v4l2-compliance issues:
> * remove input ioctls
> media api can be used to define the topology, this input api is not
> required. Besides it, if an input is enumerated, v4l2-compliance is not
> happy with G_FMT returning the default colorspace instead of something
> more specific.
> * return the pixelformat to the userspace
> G_/S_/TRY_ FORMAT should return a valid pixelformat to the user, even if
> the user gave an invalid one
> * add missing default colorspace and ycbcr
> * fix wrong pixformat in mp_fmts[] table
> * add buf type check in s_/g_selection
> * queue_setup - check sizes
> * normalize bus_info name
> * fix field any v4l2-compliance -s complain - set field none
> when streaming
> - Fix compiling error: s/vidioc_enum_fmt_vid_cap_mplane/vidioc_enum_fmt_vid_cap
> - Replace stream state with a boolean
> The rkisp1_state enum consists only of 3 entries, where 1 is completely
> unused and the other two respectively mean not streaming or streaming.
> Replace it with a boolean called "streaming".
> - Simplify MI interrupt handling
> Rather than adding unnecessary indirection, just use stream index to
> handle MI interrupt enable/disable/clear, since the stream index matches
> the order of bits now, thanks to previous patch. While at it, remove
> some dead code.
> - code styling and checkpatch fixes
> - add link_validate: don't allow a link with bayer/non-bayer mismatch
> - VIDEO_ROCKCHIP_ISP1 selects VIDEOBUF2_VMALLOC
> - add PHY_ROCKCHIP_DPHY as a dependency for VIDEO_ROCKCHIP_ISP1
> - Fix compilation and runtime errors due to bitrotting
> The code has bit-rotten since March 2018, fix compilation errors.
> The new V4L2 async notifier API requires notifiers to be initialized by
> a call to v4l2_async_notifier_init() before being used, do so.
> - Add missing module device table
> - use clk_bulk framework
> - add missing notifiers cleanups
> - s/strlcpy/strscpy
> - normalize bus_info name
> - fix s_stream error path, stream_cnt wans't being decremented properly
> - use devm_platform_ioremap_resource() helper
> - s/deice/device
> - redesign: remove mipi/csi subdevice, sensors connect directly to the
> isp subdevice in the media topology now.
> - remove "saved_state" member from rkisp1_stream struct
> - Reverse the order of MIs
> - Simplify MI interrupt handling
> Rather than adding unnecessary indirection, just use stream index to
> handle MI interrupt enable/disable/clear, since the stream index matches
> the order of bits now, thanks to previous patch. While at it, remove
> some dead code.
> - code styling and checkpatch fixes
> - update document with new design and tested example
> - updated doc with new design and tested example
> - add phy properties
> - add ports
> - add phy-cells
>
> Helen Koike (1):
> MAINTAINERS: add entry for Rockchip ISP1 driver
>
> Jacob Chen (9):
> media: doc: add document for rkisp1 meta buffer format
> media: rkisp1: add Rockchip MIPI Synopsys DPHY driver
> media: rkisp1: add Rockchip ISP1 subdev driver
> media: rkisp1: add ISP1 statistics driver
> media: rkisp1: add ISP1 params driver
> media: rkisp1: add capture device driver
> media: rkisp1: add rockchip isp1 core driver
> dt-bindings: Document the Rockchip ISP1 bindings
> dt-bindings: Document the Rockchip MIPI RX D-PHY bindings
>
> Jeffy Chen (1):
> media: rkisp1: Add user space ABI definitions
>
> Shunqian Zheng (3):
> media: videodev2.h, v4l2-ioctl: add rkisp1 meta buffer format
> arm64: dts: rockchip: add isp0 node for rk3399
> arm64: dts: rockchip: add rx0 mipi-phy for rk3399
>
> .../bindings/media/rockchip-isp1.txt | 71 +
> .../bindings/media/rockchip-mipi-dphy.txt | 38 +
> Documentation/media/uapi/v4l/meta-formats.rst | 2 +
> .../uapi/v4l/pixfmt-meta-rkisp1-params.rst | 20 +
> .../uapi/v4l/pixfmt-meta-rkisp1-stat.rst | 18 +
> MAINTAINERS | 8 +
> arch/arm64/boot/dts/rockchip/rk3399.dtsi | 36 +
> drivers/media/platform/Kconfig | 12 +
> drivers/media/platform/Makefile | 1 +
> drivers/media/platform/rockchip/isp1/Makefile | 7 +
> .../media/platform/rockchip/isp1/capture.c | 1754 +++++++++++++++++
> .../media/platform/rockchip/isp1/capture.h | 164 ++
> drivers/media/platform/rockchip/isp1/common.h | 101 +
> drivers/media/platform/rockchip/isp1/dev.c | 675 +++++++
> drivers/media/platform/rockchip/isp1/dev.h | 97 +
> .../media/platform/rockchip/isp1/isp_params.c | 1604 +++++++++++++++
> .../media/platform/rockchip/isp1/isp_params.h | 50 +
> .../media/platform/rockchip/isp1/isp_stats.c | 508 +++++
> .../media/platform/rockchip/isp1/isp_stats.h | 60 +
> drivers/media/platform/rockchip/isp1/regs.c | 223 +++
> drivers/media/platform/rockchip/isp1/regs.h | 1525 ++++++++++++++
> drivers/media/platform/rockchip/isp1/rkisp1.c | 1286 ++++++++++++
> drivers/media/platform/rockchip/isp1/rkisp1.h | 111 ++
> drivers/media/v4l2-core/v4l2-ioctl.c | 2 +
> drivers/phy/rockchip/Kconfig | 8 +
> drivers/phy/rockchip/Makefile | 1 +
> drivers/phy/rockchip/phy-rockchip-dphy.c | 412 ++++
> include/uapi/linux/rkisp1-config.h | 816 ++++++++
> include/uapi/linux/videodev2.h | 4 +
> 29 files changed, 9614 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/media/rockchip-isp1.txt
> create mode 100644 Documentation/devicetree/bindings/media/rockchip-mipi-dphy.txt
> create mode 100644 Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-params.rst
> create mode 100644 Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-stat.rst
> create mode 100644 drivers/media/platform/rockchip/isp1/Makefile
> create mode 100644 drivers/media/platform/rockchip/isp1/capture.c
> create mode 100644 drivers/media/platform/rockchip/isp1/capture.h
> create mode 100644 drivers/media/platform/rockchip/isp1/common.h
> create mode 100644 drivers/media/platform/rockchip/isp1/dev.c
> create mode 100644 drivers/media/platform/rockchip/isp1/dev.h
> create mode 100644 drivers/media/platform/rockchip/isp1/isp_params.c
> create mode 100644 drivers/media/platform/rockchip/isp1/isp_params.h
> create mode 100644 drivers/media/platform/rockchip/isp1/isp_stats.c
> create mode 100644 drivers/media/platform/rockchip/isp1/isp_stats.h
> create mode 100644 drivers/media/platform/rockchip/isp1/regs.c
> create mode 100644 drivers/media/platform/rockchip/isp1/regs.h
> create mode 100644 drivers/media/platform/rockchip/isp1/rkisp1.c
> create mode 100644 drivers/media/platform/rockchip/isp1/rkisp1.h
> create mode 100644 drivers/phy/rockchip/phy-rockchip-dphy.c
> create mode 100644 include/uapi/linux/rkisp1-config.h
>
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