Re: [PATCH v2 00/23] media: ov5640: Rework the clock tree programming for MIPI

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Hi Eugen

On Thu, Feb 17, 2022 at 02:25:37PM +0000, Eugen.Hristev@xxxxxxxxxxxxx wrote:
> On 2/14/22 8:56 PM, Jacopo Mondi wrote:
> > EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> >
> > Hi Eugen
> >
> > On Mon, Feb 14, 2022 at 03:08:56PM +0000, Eugen.Hristev@xxxxxxxxxxxxx wrote:
> >> On 2/14/22 4:38 PM, Jacopo Mondi wrote:
> >>> Hi Eugen,
> >>>
> >>> On Mon, Feb 14, 2022 at 02:06:02PM +0000, Eugen.Hristev@xxxxxxxxxxxxx wrote:
> >>>> On 2/11/22 1:25 PM, Jacopo Mondi wrote:
> >>>>> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> >>>>>
> >>>>> Hi Eugen
> >>>>>
> >>>>>            thanks very much for testing
> >>>>>
> >>>>> On Fri, Feb 11, 2022 at 10:09:04AM +0000, Eugen.Hristev@xxxxxxxxxxxxx wrote:
> >>>>>> On 2/10/22 1:04 PM, Jacopo Mondi wrote:
> >>>>>>
> >>>>>> Hello Jacopo,
> >>>>>>
> >>>>>>> v1:
> >>>>>>> https://patchwork.linuxtv.org/project/linux-media/list/?series=7249
> >>>>>>>
> >>>>>>> A branch for testing based on the most recent media-master is available at
> >>>>>>> https://git.sr.ht/~jmondi_/linux #jmondi/media-master/ov5640-v2
> >>>>>>>
> >>>>>>> If anyone with a DVP setup could verify I have not broken their use case
> >>>>>>> I would very much appreciate that :)
> >>>>>>
> >>>>>> I started testing this on my bench.
> >>>>>> So far things look good.
> >>>>>>
> >>>>>
> >>>>> \o/
> >>>>>
> >>>>>> To be able to test this, I have to revert this patch :
> >>>>>> "media: i2c: ov5640: Remain in power down for DVP mode unless streaming"
> >>>>>>
> >>>>>> Otherwise the sensor will not power up when starting streaming.
> >>>>>>
> >>>>>>
> >>>>>> I have tested several formats, as you worked more on this sensor, could
> >>>>>> you tell me, does format YUYV_2x8 work in parallel mode at 1920x1080 or
> >>>>>> 1024x768 ?
> >>>>>
> >>>>> I never tested the sensor driver with a parallel setup I'm afraid.
> >>>>> The idea behind this series is that DVP shouldn't be affected and
> >>>>> continue working like it did.
> >>>>
> >>>> Hi Jacopo,
> >>>>
> >>>> I was hoping that you had more information about the driver than myself.
> >>>
> >>> Not on DVP mode I'm sorry :(
> >>>
> >>>> I can tell that the parallel mode is not affected by your series from
> >>>> what I've seen so far.
> >>>
> >>> That's great, thanks for testing.
> >>
> >>
> >> I found one change, before your series, I could attempt to capture BGGR
> >> @ 640x480, now it looks to be gone :
> >>
> >> Before:
> >>
> >> # v4l2-ctl -d /dev/v4l-subdev1 --list-subdev-framesizes pad=0,code=0x3001
> >> ioctl: VIDIOC_SUBDEV_ENUM_FRAME_SIZE (pad=0)
> >>           Size Range: 160x120 - 160x120
> >>           Size Range: 176x144 - 176x144
> >>           Size Range: 320x240 - 320x240
> >>           Size Range: 640x480 - 640x480
> >>           Size Range: 720x480 - 720x480
> >>           Size Range: 720x576 - 720x576
> >>           Size Range: 1024x768 - 1024x768
> >>           Size Range: 1280x720 - 1280x720
> >>           Size Range: 1920x1080 - 1920x1080
> >>           Size Range: 2592x1944 - 2592x1944
> >>
> >>
> >> After:
> >>
> >> # v4l2-ctl -d /dev/v4l-subdev1 --list-subdev-framesizes pad=0,code=0x3001
> >> ioctl: VIDIOC_SUBDEV_ENUM_FRAME_SIZE (pad=0)
> >>           Size Range: 1280x720 - 1280x720
> >>           Size Range: 1920x1080 - 1920x1080
> >>           Size Range: 2592x1944 - 2592x1944
> >>
> >
> > Right... I'm limiting SRGGB formats to only resolutions > 1280x720
> > as..
> >
> >>
> >> However trying it without your patches, it doesn't work , I don't
> >
> > ... they do not work for me either.
> >
> > So if they were not working before, maybe it's right not to enumerate
> > them ?
> >
> >> receive frames, and I can't even set 1280x720 at all, I get -EINVAL
> >
> > Be aware that DVP mode prevents you from setting a format if the
> > currently selected framerate is said to be "not supported" for that
> > format
> >
> >>
> >> So I assume you have been reworking the frame sizes.
> >>
> >> With your series, I have tested RGGB at 1280x720 , 1920x1080 .
> >> I also tested YUYV at 640x480 and RGB565_LE at 640x480.
> >>
> >> I can't go higher with the YUYV/RGB565, I don't receive frames anymore.
> >
> > Ah, I wonder if
> > 07b49ac59fd9 media: ov5640: Fix durations to comply with FPS
> > 82aebf4b7314 media: ov5640: Rework analog crop rectangles
> >
> > Might have impacted DVP...
> >
> > Should I keep separate fields for MIPI mode and leave the totals for
> > DVP untouched ?
>
> Hi Jacopo,
>
> I tested again without your series, and I can capture YUYV directly
> @1280x720 , which does not work anymore with your patches.
>
> The image has some bad pixels in it, but still, capture is pretty good.
> I am not sure whether it's a timing problem on capturing pixels, I
> uploaded it here so you can have a look :
>
> https://ibb.co/Yt8c0dJ
>

This is without my series ? Or with it applied ? Sorry for the dumb
question :)

> Eugen
>
> >
> > Thanks again for your very useful testing
> >
> >
> >> I can't go higher with the bayer to 2592x1944 . But this did not work
> >> before your patches either.
> >>>
> >>>>
> >>>>>
> >>>>>> I managed to get it working fine at 640x480 .
> >>>>>>
> >>>>>> The sensor looks to report valid framesizes for this mbus code :
> >>>>>>
> >>>>>> # v4l2-ctl -d /dev/v4l-subdev1 --list-subdev-mbus-codes
> >>>>>> \ioctl: VIDIOC_SUBDEV_ENUM_MBUS_CODE (pad=0)
> >>>>>>             0x4001: MEDIA_BUS_FMT_JPEG_1X8
> >>>>>>             0x2006: MEDIA_BUS_FMT_UYVY8_2X8
> >>>>>>             0x200f: MEDIA_BUS_FMT_UYVY8_1X16
> >>>>>>             0x2008: MEDIA_BUS_FMT_YUYV8_2X8
> >>>>>>             0x2011: MEDIA_BUS_FMT_YUYV8_1X16
> >>>>>>             0x1008: MEDIA_BUS_FMT_RGB565_2X8_LE
> >>>>>>             0x1007: MEDIA_BUS_FMT_RGB565_2X8_BE
> >>>>>>             0x1017: MEDIA_BUS_FMT_RGB565_1X16
> >>>>>>             0x100a: MEDIA_BUS_FMT_RGB888_1X24
> >>>>>>             0x1013: MEDIA_BUS_FMT_BGR888_1X24
> >>>>>>             0x3001: MEDIA_BUS_FMT_SBGGR8_1X8
> >>>>>>             0x3013: MEDIA_BUS_FMT_SGBRG8_1X8
> >>>>>>             0x3002: MEDIA_BUS_FMT_SGRBG8_1X8
> >>>>>>             0x3014: MEDIA_BUS_FMT_SRGGB8_1X8
> >>>>>> # v4l2-ctl -d /dev/v4l-subdev1 --list-subdev-framesizes pad=0,code=0x2008
> >>>>>> ioctl: VIDIOC_SUBDEV_ENUM_FRAME_SIZE (pad=0)
> >>>>>>             Size Range: 160x120 - 160x120
> >>>>>>             Size Range: 176x144 - 176x144
> >>>>>>             Size Range: 320x240 - 320x240
> >>>>>>             Size Range: 640x480 - 640x480
> >>>>>>             Size Range: 720x480 - 720x480
> >>>>>>             Size Range: 720x576 - 720x576
> >>>>>>             Size Range: 1024x768 - 1024x768
> >>>>>>             Size Range: 1280x720 - 1280x720
> >>>>>>             Size Range: 1920x1080 - 1920x1080
> >>>>>>             Size Range: 2592x1944 - 2592x1944
> >>>>>> #
> >>>>>>
> >>>>>> but the ISC does not receive any frames at 1024x768 and 1920x1080.
> >>>>>
> >>>>> Are 1080p and 1024x768 working without this series applied on your
> >>>>> setup ?
> >>>>
> >>>> I remember they weren't working before either.
> >>>>
> >>>> I don't know exactly to which patches to add my Tested-by , as I have
> >>>> not tested the explicit patch behavior for each patch (e.g. where you
> >>>> add HBLANK control, I have not tested that ).
> >>>>
> >>>
> >>> I think it's good enough making sure I have not broke DVP.
> >>>
> >>> As you can see the driver now behaves in two different ways in DVP and
> >>> MIPI mode. The DVP works as it used to, and the framerate is
> >>> controlled by s_frame_interval, the frame size is fixed and the PCLK
> >>> is computed dyanically to accomodate the required FPS. In MIPI mode the
> >>> framerate is controlled by changing the vertical blankings. To each
> >>> mode a pixel rate is assigned and userspace changes the frame duration
> >>> by changing blankings. The most obvious gain is that the frame rate is
> >>> controllable in a continuous interval instead of being limited to a
> >>> few fixed values. It is my understanding that all drivers should be
> >>> moved to this model and s_frame_intervall should be dropped, but
> >>> unfortunately some bridge drivers in mainline still deman that.
> >>>
> >>> If you are interested, I think the DVP mode should be moved to use the
> >>> same mecahnism as MIPI mode. I can't test so I haven't done so in this
> >>> series.
> >>>
> >>> For now I think it's enough to make sure there are no regressions in
> >>> DVP mode.
> >>>
> >>> For the tag, I think it would be appropriate to add it to the
> >>> following one:
> >>>
> >>> 91ae667b0d47 media: ov5640: Limit frame_interval to DVP mode only
> >>>
> >>>> Is there something particular you would like me to try , except my usual
> >>>> image captures ?
> >>>
> >>> RGB888 is weird on both the platforms I've tested on and I cannot get
> >>> colors right. Does your platform support RGB888 ?
> >>
> >> I can't test this one unfortunately. It's a 1X24 . I have only 8 bits
> >> connected, so unless you can make this a 3x8 , there isn't anything I
> >> can do.
> >>
> >>>
> >>> Thanks
> >>>     j
> >>>
> >>>
> >>>>
> >>>>
> >>>> Eugen
> >>>>
> >>>>>
> >>>>> Thanks again for testin!
> >>>>>
> >>>>>>
> >>>>>>
> >>>>>> What I can say is that the raw bayer format works at 1920x1080 , frames
> >>>>>> are received correctly.
> >>>>>>
> >>>>>> Thanks,
> >>>>>> Eugen
> >>>>>>
> >>>>>>>
> >>>>>>> v1 -> v2:
> >>>>>>> - rework the modes definition to process the full pixel array
> >>>>>>> - rework get_selection to report the correct BOUND and DEFAULT targets
> >>>>>>> - implement init_cfg
> >>>>>>> - minor style changes as suggested by Laurent
> >>>>>>> - test with 1 data lane
> >>>>>>>
> >>>>>>> Thanks
> >>>>>>>        j
> >>>>>>>
> >>>>>>> Jacopo Mondi (23):
> >>>>>>>       media: ov5640: Add pixel rate to modes
> >>>>>>>       media: ov5604: Re-arrange modes definition
> >>>>>>>       media: ov5640: Add ov5640_is_csi2() function
> >>>>>>>       media: ov5640: Associate bpp with formats
> >>>>>>>       media: ov5640: Add LINK_FREQ control
> >>>>>>>       media: ov5640: Update pixel_rate and link_freq
> >>>>>>>       media: ov5640: Rework CSI-2 clock tree
> >>>>>>>       media: ov5640: Rework timings programming
> >>>>>>>       media: ov5640: Fix 720x480 in RGB888 mode
> >>>>>>>       media: ov5640: Rework analog crop rectangles
> >>>>>>>       media: ov5640: Re-sort per-mode register tables
> >>>>>>>       media: ov5640: Remove ov5640_mode_init_data
> >>>>>>>       media: ov5640: Add HBLANK control
> >>>>>>>       media: ov5640: Add VBLANK control
> >>>>>>>       media: ov5640: Fix durations to comply with FPS
> >>>>>>>       media: ov5640: Implement init_cfg
> >>>>>>>       media: ov5640: Implement get_selection
> >>>>>>>       media: ov5640: Limit frame_interval to DVP mode only
> >>>>>>>       media: ov5640: Register device properties
> >>>>>>>       media: ov5640: Add RGB565_1X16 format
> >>>>>>>       media: ov5640: Add RGB888/BGR888 formats
> >>>>>>>       media: ov5640: Restrict sizes to mbus code
> >>>>>>>       media: ov5640: Adjust format to bpp in s_fmt
> >>>>>>>
> >>>>>>>      drivers/media/i2c/ov5640.c | 1143 ++++++++++++++++++++++++++----------
> >>>>>>>      1 file changed, 830 insertions(+), 313 deletions(-)
> >>>>>>>
> >>>>>>> --
> >>>>>>> 2.35.0
> >>>>>>>
> >>>>>>
> >>>>
> >>
>



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