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

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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

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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