[04/11] media: rcar-csi2: Use the subdev active state

Message ID	20240503155127.105235-5-jacopo.mondi@ideasonboard.com (mailing list archive)
State	New
Headers	show Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7F14D155312; Fri, 3 May 2024 15:51:55 +0000 (UTC) From: Jacopo Mondi <jacopo.mondi@ideasonboard.com> To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>, =?utf-8?q?Niklas_S?= =?utf-8?q?=C3=B6derlund?= <niklas.soderlund+renesas@ragnatech.se>, Sakari Ailus <sakari.ailus@linux.intel.com>, Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>, Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Cc: Jacopo Mondi <jacopo.mondi@ideasonboard.com>, linux-media@vger.kernel.org, linux-renesas-soc@vger.kernel.org Subject: [PATCH 04/11] media: rcar-csi2: Use the subdev active state Date: Fri, 3 May 2024 17:51:19 +0200 Message-ID: <20240503155127.105235-5-jacopo.mondi@ideasonboard.com> In-Reply-To: <20240503155127.105235-1-jacopo.mondi@ideasonboard.com> References: <20240503155127.105235-1-jacopo.mondi@ideasonboard.com> Precedence: bulk MIME-Version: 1.0 Content-Transfer-Encoding: 8bit
Series	media: renesas: rcar-csi2: Use the subdev active state \| expand [00/11] media: renesas: rcar-csi2: Use the subdev active state [01/11] media: rcar-vin: Fix YUYV8_1X16 handling for CSI-2 [02/11] media: rcar-csi2: Disable runtime_pm in probe error [03/11] media: rcar-csi2: Cleanup subdevice in remove() [04/11] media: rcar-csi2: Use the subdev active state [05/11] media: adv748x-csi2: Initialize subdev format [06/11] media: adv748x-csi2: Implement enum_mbus_codes [07/11] media: adv748x-csi2: Validate the image format [08/11] media: adv748x-csi2: Use the subdev active state [09/11] media: max9286: Fix enum_mbus_code [10/11] media: max9286: Use the subdev active state [11/11] media: max9286: Use frame interval from subdev state

Jacopo Mondi May 3, 2024, 3:51 p.m. UTC

Create the subdevice state with v4l2_subdev_init_finalize() and
implement the init_state() operation to guarantee the state is initialized.

Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
---
 drivers/media/platform/renesas/rcar-csi2.c | 138 +++++++++++----------
 1 file changed, 75 insertions(+), 63 deletions(-)

Niklas Söderlund May 3, 2024, 6:03 p.m. UTC | #1

Hi Jacopo,

Thanks for your work.

On 2024-05-03 17:51:19 +0200, Jacopo Mondi wrote:
> Create the subdevice state with v4l2_subdev_init_finalize() and
> implement the init_state() operation to guarantee the state is initialized.

This fails and produces -EPIPE error when trying to capture on R-Car M3N 
using ADV748x. If I only apply patch 1, 2, 3 of this series it works as 
expected, when I apply this as well capture breaks.

You can test this on a remote Gen3 board without any HDMI or CVBS 
source, just enable a test patterns on the HDMI and AFE sources, see [1] 
for my test-case output which demonstrates how I produce the failure.

Oddly enough if I use the old vin-test package I can capture from HDMI 
while CVBS capture still fails with -EPIPE. Not sure what's going on.

1. Ignore the "Unable to get format: Inappropriate ioctl for device 
   (25)." from the "yavta --set-control ..." commands, they are 
   unimportant and not new. Focus in the "Unable to start streaming: 
   Broken pipe (32)." errors from "yavta -c10 --file=..  /dev/videoX" 
   calls, they are not new ;-)

===> star <===
Last login: Fri May  3 17:48:06 2024

Renesas Salvator-X 2nd version board based on r8a77965
0;root@arm64:~
arm64 ~ # echo wkbfirytku $$; rm -fr /tmp/vin-capture; echo ygxezpiinz $?
echo wkbfirytku $$; rm -fr /tmp/vin-capture; echo ygxezpiinz $?

wkbfirytku 403
ygxezpiinz 0
echo agyxksooma $$; mkdir -p /tmp/vin-capture; echo kvwostutox $?
0;root@arm64:~
arm64 ~ # echo agyxksooma $$; mkdir -p /tmp/vin-capture; echo kvwostutox $?

agyxksooma 403
kvwostutox 0
echo vtmzcdhjtc $$; grep -l 'adv748x 4-0070 afe' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo mwqkcmnuju $?
0;root@arm64:~
arm64 ~ # echo vtmzcdhjtc $$; grep -l 'adv748x 4-0070 afe' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo mwqkcmnuju $?

vtmzcdhjtc 403
/dev/v4l-subdev1
mwqkcmnuju 0
echo yavkazxvyn $$; grep -l 'VIN0 output' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo wpijcgewrd $?
0;root@arm64:~
arm64 ~ # echo yavkazxvyn $$; grep -l 'VIN0 output' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo wpijcgewrd $?

yavkazxvyn 403
/dev/video0
wpijcgewrd 0
echo nkitspntrm $$; for mdev in /dev/media*; do if [[ '$(media-ctl -d $mdev -p | grep 'rcar_vin')' != '' ]]; then echo $mdev; break; fi; done; echo ngoqmbhfqr $?
0;root@arm64:~
arm64 ~ # echo nkitspntrm $$; for mdev in /dev/media*; do if [[ '$(media-ctl -d $mdev -p | grep 'rcar_vin')' != '' ]]; then echo $mdev; break; fi; done; echo ngoqmbhfqr $?

nkitspntrm 403
/dev/media0
ngoqmbhfqr 0
echo ggokwokuyh $$; media-ctl -d /dev/media0 -r; echo yydmasvhba $?
0;root@arm64:~
arm64 ~ # echo ggokwokuyh $$; media-ctl -d /dev/media0 -r; echo yydmasvhba $?

ggokwokuyh 403
yydmasvhba 0
0;root@arm64:~
echo ftqgotsvwt $$; media-ctl -d /dev/media0 -l "'adv748x 4-0070 afe':8 -> 'adv748x 4-0070 txb':0 [1]"; echo ohfyvhjfrt $?
arm64 ~ # echo ftqgotsvwt $$; media-ctl -d /dev/media0 -l "'adv748x 4-0070 afe':8 -> 'adv748x 4-0070 txb':0 [1]"; echo ohfyvhjfrt $?

ftqgotsvwt 403
ohfyvhjfrt 0
0;root@arm64:~
echo nhtnyteajn $$; media-ctl -d /dev/media0 -l "'rcar_csi2 fea80000.csi2':1 -> 'VIN0 output':0 [1]"; echo vovincdzqi $?
arm64 ~ # echo nhtnyteajn $$; media-ctl -d /dev/media0 -l "'rcar_csi2 fea80000.csi2':1 -> 'VIN0 output':0 [1]"; echo vovincdzqi $?

nhtnyteajn 403
vovincdzqi 0
0;root@arm64:~
echo rulkcoorky $$; media-ctl -d /dev/media0 --get-v4l2 "'adv748x 4-0070 afe':8"; echo esoiygqdfq $?
arm64 ~ # echo rulkcoorky $$; media-ctl -d /dev/media0 --get-v4l2 "'adv748x 4-0070 afe':8"; echo esoiygqdfq $?

rulkcoorky 403
		[stream:0 fmt:UYVY8_2X8/720x240 field:alternate colorspace:smpte170m]
esoiygqdfq 0
0;root@arm64:~
echo dmdgcctvqh $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 afe':8 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo ighfsicfux $?
arm64 ~ # echo dmdgcctvqh $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 afe':8 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo ighfsicfux $?

dmdgcctvqh 403
ighfsicfux 0
0;root@arm64:~
echo mqlvxrvync $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 txb':0 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo elpiosmlzj $?
arm64 ~ # echo mqlvxrvync $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 txb':0 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo elpiosmlzj $?

mqlvxrvync 403
elpiosmlzj 0
0;root@arm64:~
echo aoldaiatak $$; media-ctl -d /dev/media0 -V "'rcar_csi2 fea80000.csi2':1 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo iymsospuex $?
arm64 ~ # echo aoldaiatak $$; media-ctl -d /dev/media0 -V "'rcar_csi2 fea80000.csi2':1 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo iymsospuex $?

aoldaiatak 403
iymsospuex 0
0;root@arm64:~
echo nxpbvfvtbv $$; yavta -f RGB565 -s 720x480 --field interlaced /dev/video0; echo dppdatfote $?
arm64 ~ # echo nxpbvfvtbv $$; yavta -f RGB565 -s 720x480 --field interlaced /dev/video0; echo dppdatfote $?

nxpbvfvtbv 403
Device /dev/video0 opened.
Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
Video format set: RGB565 (50424752) 720x480 (stride 1440) field interlaced buffer size 691200
Video format: RGB565 (50424752) 720x480 (stride 1440) field interlaced buffer size 691200
dppdatfote 0
echo zsqtrrojrr $$; yavta --set-control '0x009f0903 1' /dev/v4l-subdev1; echo xkrxhzzdcq $?
0;root@arm64:~
arm64 ~ # echo zsqtrrojrr $$; yavta --set-control '0x009f0903 1' /dev/v4l-subdev1; echo xkrxhzzdcq $?

zsqtrrojrr 403
Device /dev/v4l-subdev1 opened.
Control 0x009f0903 set to 1, is 1
Unable to get format: Inappropriate ioctl for device (25).
xkrxhzzdcq 0
echo jifvldisax $$; yavta -c10 --file=/tmp/vin-capture/cvbs-solid-#.bin /dev/video0; echo tmzmlnjlsq $?
0;root@arm64:~
arm64 ~ # echo jifvldisax $$; yavta -c10 --file=/tmp/vin-capture/cvbs-solid-#.bin /dev/video0; echo tmzmlnjlsq $?

jifvldisax 403
Device /dev/video0 opened.
Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
Video format: RGB565 (50424752) 720x480 (stride 1440) field interlaced buffer size 691200
8 buffers requested.
length: 691200 offset: 0 timestamp type/source: mono/EoF
Buffer 0/0 mapped at address 0xffffb1037000.
length: 691200 offset: 32768 timestamp type/source: mono/EoF
Buffer 1/0 mapped at address 0xffffb0f8e000.
length: 691200 offset: 65536 timestamp type/source: mono/EoF
Buffer 2/0 mapped at address 0xffffb0ee5000.
length: 691200 offset: 98304 timestamp type/source: mono/EoF
Buffer 3/0 mapped at address 0xffffb0e3c000.
length: 691200 offset: 131072 timestamp type/source: mono/EoF
Buffer 4/0 mapped at address 0xffffb0d93000.
length: 691200 offset: 163840 timestamp type/source: mono/EoF
Buffer 5/0 mapped at address 0xffffb0cea000.
length: 691200 offset: 196608 timestamp type/source: mono/EoF
Buffer 6/0 mapped at address 0xffffb0c41000.
length: 691200 offset: 229376 timestamp type/source: mono/EoF
Buffer 7/0 mapped at address 0xffffb0b98000.
Unable to start streaming: Broken pipe (32).
8 buffers released.
tmzmlnjlsq 0
echo wojwgdpxnx $$; yavta --set-control '0x009f0903 2' /dev/v4l-subdev1; echo dghaavszch $?
0;root@arm64:~
arm64 ~ # echo wojwgdpxnx $$; yavta --set-control '0x009f0903 2' /dev/v4l-subdev1; echo dghaavszch $?

wojwgdpxnx 403
Device /dev/v4l-subdev1 opened.
Control 0x009f0903 set to 2, is 2
Unable to get format: Inappropriate ioctl for device (25).
dghaavszch 0
0;root@arm64:~
echo tldblgblou $$; yavta -c10 --file=/tmp/vin-capture/cvbs-colorbars-#.bin /dev/video0; echo pofbqvttib $?
arm64 ~ # echo tldblgblou $$; yavta -c10 --file=/tmp/vin-capture/cvbs-colorbars-#.bin /dev/video0; echo pofbqvttib $?

tldblgblou 403
Device /dev/video0 opened.
Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
Video format: RGB565 (50424752) 720x480 (stride 1440) field interlaced buffer size 691200
8 buffers requested.
length: 691200 offset: 0 timestamp type/source: mono/EoF
Buffer 0/0 mapped at address 0xffffb75f7000.
length: 691200 offset: 32768 timestamp type/source: mono/EoF
Buffer 1/0 mapped at address 0xffffb754e000.
length: 691200 offset: 65536 timestamp type/source: mono/EoF
Buffer 2/0 mapped at address 0xffffb74a5000.
length: 691200 offset: 98304 timestamp type/source: mono/EoF
Buffer 3/0 mapped at address 0xffffb73fc000.
length: 691200 offset: 131072 timestamp type/source: mono/EoF
Buffer 4/0 mapped at address 0xffffb7353000.
length: 691200 offset: 163840 timestamp type/source: mono/EoF
Buffer 5/0 mapped at address 0xffffb72aa000.
length: 691200 offset: 196608 timestamp type/source: mono/EoF
Buffer 6/0 mapped at address 0xffffb7201000.
length: 691200 offset: 229376 timestamp type/source: mono/EoF
Buffer 7/0 mapped at address 0xffffb7158000.
Unable to start streaming: Broken pipe (32).
8 buffers released.
pofbqvttib 0
0;root@arm64:~
echo maubyyzesr $$; yavta --set-control '0x009f0903 0' /dev/v4l-subdev1; echo dzbvegabvy $?
arm64 ~ # echo maubyyzesr $$; yavta --set-control '0x009f0903 0' /dev/v4l-subdev1; echo dzbvegabvy $?

maubyyzesr 403
Device /dev/v4l-subdev1 opened.
Control 0x009f0903 set to 0, is 0
Unable to get format: Inappropriate ioctl for device (25).
dzbvegabvy 0
0;root@arm64:~
echo pffcsadwlt $$; test -e /tmp/vin-capture/cvbs-solid-000007.bin; echo xilwxnvrrd $?
arm64 ~ # echo pffcsadwlt $$; test -e /tmp/vin-capture/cvbs-solid-000007.bin; echo xilwxnvrrd $?

pffcsadwlt 403
xilwxnvrrd 1
echo grglvpwocj $$; grep -l 'adv748x 4-0070 hdmi' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo hvcawnkqdt $?
0;root@arm64:~
arm64 ~ # echo grglvpwocj $$; grep -l 'adv748x 4-0070 hdmi' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo hvcawnkqdt $?

grglvpwocj 403
/dev/v4l-subdev4
hvcawnkqdt 0
echo nnpccbuzak $$; media-ctl -d /dev/media0 -r; echo zigvuehatt $?
0;root@arm64:~
arm64 ~ # echo nnpccbuzak $$; media-ctl -d /dev/media0 -r; echo zigvuehatt $?

nnpccbuzak 403
zigvuehatt 0
echo xyngygxuyr $$; media-ctl -d /dev/media0 -l "'adv748x 4-0070 hdmi':1 -> 'adv748x 4-0070 txa':0 [1]"; echo oknofsbyvn $?
0;root@arm64:~
arm64 ~ # echo xyngygxuyr $$; media-ctl -d /dev/media0 -l "'adv748x 4-0070 hdmi':1 -> 'adv748x 4-0070 txa':0 [1]"; echo oknofsbyvn $?

xyngygxuyr 403
oknofsbyvn 0
0;root@arm64:~
echo jkzuanypyp $$; media-ctl -d /dev/media0 -l "'rcar_csi2 feaa0000.csi2':1 -> 'VIN0 output':0 [1]"; echo onsaxggllz $?
arm64 ~ # echo jkzuanypyp $$; media-ctl -d /dev/media0 -l "'rcar_csi2 feaa0000.csi2':1 -> 'VIN0 output':0 [1]"; echo onsaxggllz $?

jkzuanypyp 403
onsaxggllz 0
0;root@arm64:~
echo lttzkqwwoa $$; media-ctl -d /dev/media0 --get-v4l2 "'adv748x 4-0070 hdmi':1"; echo imxtuqbxgf $?
arm64 ~ # echo lttzkqwwoa $$; media-ctl -d /dev/media0 --get-v4l2 "'adv748x 4-0070 hdmi':1"; echo imxtuqbxgf $?

lttzkqwwoa 403
		[stream:0 fmt:RGB888_1X24/1280x720 field:none colorspace:srgb]
imxtuqbxgf 0
0;root@arm64:~
echo degzwngmzk $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 hdmi':1 [fmt:RGB888_1X24/1280x720 field:none]"; echo vgqpdhbhjt $?
arm64 ~ # echo degzwngmzk $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 hdmi':1 [fmt:RGB888_1X24/1280x720 field:none]"; echo vgqpdhbhjt $?

degzwngmzk 403
vgqpdhbhjt 0
0;root@arm64:~
echo iwtingcfbz $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 txa':0 [fmt:RGB888_1X24/1280x720 field:none]"; echo qircbjupbq $?
arm64 ~ # echo iwtingcfbz $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 txa':0 [fmt:RGB888_1X24/1280x720 field:none]"; echo qircbjupbq $?

iwtingcfbz 403
qircbjupbq 0
0;root@arm64:~
echo twrjqisqff $$; media-ctl -d /dev/media0 -V "'rcar_csi2 feaa0000.csi2':1 [fmt:RGB888_1X24/1280x720 field:none]"; echo ocaivovrxk $?
arm64 ~ # echo twrjqisqff $$; media-ctl -d /dev/media0 -V "'rcar_csi2 feaa0000.csi2':1 [fmt:RGB888_1X24/1280x720 field:none]"; echo ocaivovrxk $?

twrjqisqff 403
ocaivovrxk 0
echo ajqwydmzik $$; yavta -f RGB565 -s 1280x720 --field none /dev/video0; echo fayawxvllj $?
0;root@arm64:~
arm64 ~ # echo ajqwydmzik $$; yavta -f RGB565 -s 1280x720 --field none /dev/video0; echo fayawxvllj $?

ajqwydmzik 403
Device /dev/video0 opened.
Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
Video format set: RGB565 (50424752) 1280x720 (stride 2560) field none buffer size 1843200
Video format: RGB565 (50424752) 1280x720 (stride 2560) field none buffer size 1843200
fayawxvllj 0
echo pealtxybun $$; yavta --set-control '0x009f0903 1' /dev/v4l-subdev4; echo juhrczaeao $?
0;root@arm64:~
arm64 ~ # echo pealtxybun $$; yavta --set-control '0x009f0903 1' /dev/v4l-subdev4; echo juhrczaeao $?

pealtxybun 403
Device /dev/v4l-subdev4 opened.
Control 0x009f0903 set to 1, is 1
Unable to get format: Inappropriate ioctl for device (25).
juhrczaeao 0
0;root@arm64:~
echo oaxoraqdid $$; yavta -c10 --file=/tmp/vin-capture/hdmi-solid-#.bin /dev/video0; echo bfsxvmqitj $?
arm64 ~ # echo oaxoraqdid $$; yavta -c10 --file=/tmp/vin-capture/hdmi-solid-#.bin /dev/video0; echo bfsxvmqitj $?

oaxoraqdid 403
Device /dev/video0 opened.
Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
Video format: RGB565 (50424752) 1280x720 (stride 2560) field none buffer size 1843200
8 buffers requested.
length: 1843200 offset: 0 timestamp type/source: mono/EoF
Buffer 0/0 mapped at address 0xffffafa8e000.
length: 1843200 offset: 32768 timestamp type/source: mono/EoF
Buffer 1/0 mapped at address 0xffffaf8cc000.
length: 1843200 offset: 65536 timestamp type/source: mono/EoF
Buffer 2/0 mapped at address 0xffffaf70a000.
length: 1843200 offset: 98304 timestamp type/source: mono/EoF
Buffer 3/0 mapped at address 0xffffaf548000.
length: 1843200 offset: 131072 timestamp type/source: mono/EoF
Buffer 4/0 mapped at address 0xffffaf386000.
length: 1843200 offset: 163840 timestamp type/source: mono/EoF
Buffer 5/0 mapped at address 0xffffaf1c4000.
length: 1843200 offset: 196608 timestamp type/source: mono/EoF
Buffer 6/0 mapped at address 0xffffaf002000.
length: 1843200 offset: 229376 timestamp type/source: mono/EoF
Buffer 7/0 mapped at address 0xffffaee40000.
Unable to start streaming: Broken pipe (32).
8 buffers released.
bfsxvmqitj 0
echo pmbwbnrkkw $$; yavta --set-control '0x009f0903 2' /dev/v4l-subdev4; echo ucgivtjwvw $?
0;root@arm64:~
arm64 ~ # echo pmbwbnrkkw $$; yavta --set-control '0x009f0903 2' /dev/v4l-subdev4; echo ucgivtjwvw $?

pmbwbnrkkw 403
Device /dev/v4l-subdev4 opened.
Control 0x009f0903 set to 2, is 2
Unable to get format: Inappropriate ioctl for device (25).
ucgivtjwvw 0
0;root@arm64:~
echo rvkbtaiuan $$; yavta -c10 --file=/tmp/vin-capture/hdmi-colorbars-#.bin /dev/video0; echo fdlcrvrylc $?
arm64 ~ # echo rvkbtaiuan $$; yavta -c10 --file=/tmp/vin-capture/hdmi-colorbars-#.bin /dev/video0; echo fdlcrvrylc $?

rvkbtaiuan 403
Device /dev/video0 opened.
Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
Video format: RGB565 (50424752) 1280x720 (stride 2560) field none buffer size 1843200
8 buffers requested.
length: 1843200 offset: 0 timestamp type/source: mono/EoF
Buffer 0/0 mapped at address 0xffff86f8e000.
length: 1843200 offset: 32768 timestamp type/source: mono/EoF
Buffer 1/0 mapped at address 0xffff86dcc000.
length: 1843200 offset: 65536 timestamp type/source: mono/EoF
Buffer 2/0 mapped at address 0xffff86c0a000.
length: 1843200 offset: 98304 timestamp type/source: mono/EoF
Buffer 3/0 mapped at address 0xffff86a48000.
length: 1843200 offset: 131072 timestamp type/source: mono/EoF
Buffer 4/0 mapped at address 0xffff86886000.
length: 1843200 offset: 163840 timestamp type/source: mono/EoF
Buffer 5/0 mapped at address 0xffff866c4000.
length: 1843200 offset: 196608 timestamp type/source: mono/EoF
Buffer 6/0 mapped at address 0xffff86502000.
length: 1843200 offset: 229376 timestamp type/source: mono/EoF
Buffer 7/0 mapped at address 0xffff86340000.
Unable to start streaming: Broken pipe (32).
8 buffers released.
fdlcrvrylc 0
0;root@arm64:~
echo hrgnrsupul $$; yavta --set-control '0x009f0903 0' /dev/v4l-subdev4; echo bvgysmcxve $?
arm64 ~ # echo hrgnrsupul $$; yavta --set-control '0x009f0903 0' /dev/v4l-subdev4; echo bvgysmcxve $?

hrgnrsupul 403
Device /dev/v4l-subdev4 opened.
Control 0x009f0903 set to 0, is 0
Unable to get format: Inappropriate ioctl for device (25).
bvgysmcxve 0
echo znlqovrrra $$; test -e /tmp/vin-capture/hdmi-solid-000007.bin; echo sjpcuiptaf $?
0;root@arm64:~
arm64 ~ # echo znlqovrrra $$; test -e /tmp/vin-capture/hdmi-solid-000007.bin; echo sjpcuiptaf $?

znlqovrrra 403
sjpcuiptaf 1
exit
===> end <===

> 
> Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
> ---
>  drivers/media/platform/renesas/rcar-csi2.c | 138 +++++++++++----------
>  1 file changed, 75 insertions(+), 63 deletions(-)
> 
> diff --git a/drivers/media/platform/renesas/rcar-csi2.c b/drivers/media/platform/renesas/rcar-csi2.c
> index 2d464e43a5be..4d4dfb59b025 100644
> --- a/drivers/media/platform/renesas/rcar-csi2.c
> +++ b/drivers/media/platform/renesas/rcar-csi2.c
> @@ -587,7 +587,8 @@ enum rcar_csi2_pads {
>  struct rcar_csi2_info {
>  	int (*init_phtw)(struct rcar_csi2 *priv, unsigned int mbps);
>  	int (*phy_post_init)(struct rcar_csi2 *priv);
> -	int (*start_receiver)(struct rcar_csi2 *priv);
> +	int (*start_receiver)(struct rcar_csi2 *priv,
> +			      struct v4l2_subdev_state *state);
>  	void (*enter_standby)(struct rcar_csi2 *priv);
>  	const struct rcsi2_mbps_reg *hsfreqrange;
>  	unsigned int csi0clkfreqrange;
> @@ -613,8 +614,6 @@ struct rcar_csi2 {
>  
>  	int channel_vc[4];
>  
> -	struct mutex lock; /* Protects mf and stream_count. */
> -	struct v4l2_mbus_framefmt mf;
>  	int stream_count;
>  
>  	bool cphy;
> @@ -808,20 +807,25 @@ static int rcsi2_get_active_lanes(struct rcar_csi2 *priv,
>  	return 0;
>  }
>  
> -static int rcsi2_start_receiver_gen3(struct rcar_csi2 *priv)
> +static int rcsi2_start_receiver_gen3(struct rcar_csi2 *priv,
> +				     struct v4l2_subdev_state *state)
>  {
>  	const struct rcar_csi2_format *format;
>  	u32 phycnt, vcdt = 0, vcdt2 = 0, fld = 0;
> +	struct v4l2_mbus_framefmt *fmt;
>  	unsigned int lanes;
>  	unsigned int i;
>  	int mbps, ret;
>  
> +	/* Use the format on the sink pad to compute the receiver config. */
> +	fmt = v4l2_subdev_state_get_format(state, RCAR_CSI2_SINK);
> +
>  	dev_dbg(priv->dev, "Input size (%ux%u%c)\n",
> -		priv->mf.width, priv->mf.height,
> -		priv->mf.field == V4L2_FIELD_NONE ? 'p' : 'i');
> +		fmt->width, fmt->height,
> +		fmt->field == V4L2_FIELD_NONE ? 'p' : 'i');
>  
>  	/* Code is validated in set_fmt. */
> -	format = rcsi2_code_to_fmt(priv->mf.code);
> +	format = rcsi2_code_to_fmt(fmt->code);
>  	if (!format)
>  		return -EINVAL;
>  
> @@ -849,11 +853,11 @@ static int rcsi2_start_receiver_gen3(struct rcar_csi2 *priv)
>  			vcdt2 |= vcdt_part << ((i % 2) * 16);
>  	}
>  
> -	if (priv->mf.field == V4L2_FIELD_ALTERNATE) {
> +	if (fmt->field == V4L2_FIELD_ALTERNATE) {
>  		fld = FLD_DET_SEL(1) | FLD_FLD_EN4 | FLD_FLD_EN3 | FLD_FLD_EN2
>  			| FLD_FLD_EN;
>  
> -		if (priv->mf.height == 240)
> +		if (fmt->height == 240)
>  			fld |= FLD_FLD_NUM(0);
>  		else
>  			fld |= FLD_FLD_NUM(1);
> @@ -1049,15 +1053,18 @@ static int rcsi2_c_phy_setting_v4h(struct rcar_csi2 *priv, int msps)
>  	return 0;
>  }
>  
> -static int rcsi2_start_receiver_v4h(struct rcar_csi2 *priv)
> +static int rcsi2_start_receiver_v4h(struct rcar_csi2 *priv,
> +				    struct v4l2_subdev_state *state)
>  {
>  	const struct rcar_csi2_format *format;
> +	struct v4l2_mbus_framefmt *fmt;
>  	unsigned int lanes;
>  	int msps;
>  	int ret;
>  
> -	/* Calculate parameters */
> -	format = rcsi2_code_to_fmt(priv->mf.code);
> +	/* Use the format on the sink pad to compute the receiver config. */
> +	fmt = v4l2_subdev_state_get_format(state, RCAR_CSI2_SINK);
> +	format = rcsi2_code_to_fmt(fmt->code);
>  	if (!format)
>  		return -EINVAL;
>  
> @@ -1114,7 +1121,7 @@ static int rcsi2_start_receiver_v4h(struct rcar_csi2 *priv)
>  	return 0;
>  }
>  
> -static int rcsi2_start(struct rcar_csi2 *priv)
> +static int rcsi2_start(struct rcar_csi2 *priv, struct v4l2_subdev_state *state)
>  {
>  	int ret;
>  
> @@ -1122,7 +1129,7 @@ static int rcsi2_start(struct rcar_csi2 *priv)
>  	if (ret < 0)
>  		return ret;
>  
> -	ret = priv->info->start_receiver(priv);
> +	ret = priv->info->start_receiver(priv, state);
>  	if (ret) {
>  		rcsi2_enter_standby(priv);
>  		return ret;
> @@ -1146,17 +1153,16 @@ static void rcsi2_stop(struct rcar_csi2 *priv)
>  static int rcsi2_s_stream(struct v4l2_subdev *sd, int enable)
>  {
>  	struct rcar_csi2 *priv = sd_to_csi2(sd);
> +	struct v4l2_subdev_state *state;
>  	int ret = 0;
>  
> -	mutex_lock(&priv->lock);
> +	if (!priv->remote)
> +		return -ENODEV;
>  
> -	if (!priv->remote) {
> -		ret = -ENODEV;
> -		goto out;
> -	}
> +	state = v4l2_subdev_lock_and_get_active_state(&priv->subdev);
>  
>  	if (enable && priv->stream_count == 0) {
> -		ret = rcsi2_start(priv);
> +		ret = rcsi2_start(priv, state);
>  		if (ret)
>  			goto out;
>  	} else if (!enable && priv->stream_count == 1) {
> @@ -1165,49 +1171,26 @@ static int rcsi2_s_stream(struct v4l2_subdev *sd, int enable)
>  
>  	priv->stream_count += enable ? 1 : -1;
>  out:
> -	mutex_unlock(&priv->lock);
> +	v4l2_subdev_unlock_state(state);
>  
>  	return ret;
>  }
>  
>  static int rcsi2_set_pad_format(struct v4l2_subdev *sd,
> -				struct v4l2_subdev_state *sd_state,
> +				struct v4l2_subdev_state *state,
>  				struct v4l2_subdev_format *format)
>  {
> -	struct rcar_csi2 *priv = sd_to_csi2(sd);
> -	struct v4l2_mbus_framefmt *framefmt;
> -
> -	mutex_lock(&priv->lock);
> +	if (format->pad > RCAR_CSI2_SINK)
> +		return v4l2_subdev_get_fmt(sd, state, format);
>  
>  	if (!rcsi2_code_to_fmt(format->format.code))
>  		format->format.code = rcar_csi2_formats[0].code;
>  
> -	if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
> -		priv->mf = format->format;
> -	} else {
> -		framefmt = v4l2_subdev_state_get_format(sd_state, 0);
> -		*framefmt = format->format;
> -	}
> -
> -	mutex_unlock(&priv->lock);
> -
> -	return 0;
> -}
> -
> -static int rcsi2_get_pad_format(struct v4l2_subdev *sd,
> -				struct v4l2_subdev_state *sd_state,
> -				struct v4l2_subdev_format *format)
> -{
> -	struct rcar_csi2 *priv = sd_to_csi2(sd);
> -
> -	mutex_lock(&priv->lock);
> -
> -	if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
> -		format->format = priv->mf;
> -	else
> -		format->format = *v4l2_subdev_state_get_format(sd_state, 0);
> +	*v4l2_subdev_state_get_format(state, format->pad) = format->format;
>  
> -	mutex_unlock(&priv->lock);
> +	/* Propagate the format to the source pads. */
> +	for (unsigned int i = RCAR_CSI2_SOURCE_VC0; i < NR_OF_RCAR_CSI2_PAD; i++)
> +		*v4l2_subdev_state_get_format(state, i) = format->format;
>  
>  	return 0;
>  }
> @@ -1218,7 +1201,7 @@ static const struct v4l2_subdev_video_ops rcar_csi2_video_ops = {
>  
>  static const struct v4l2_subdev_pad_ops rcar_csi2_pad_ops = {
>  	.set_fmt = rcsi2_set_pad_format,
> -	.get_fmt = rcsi2_get_pad_format,
> +	.get_fmt = v4l2_subdev_get_fmt,
>  };
>  
>  static const struct v4l2_subdev_ops rcar_csi2_subdev_ops = {
> @@ -1226,6 +1209,30 @@ static const struct v4l2_subdev_ops rcar_csi2_subdev_ops = {
>  	.pad	= &rcar_csi2_pad_ops,
>  };
>  
> +static int rcsi2_init_state(struct v4l2_subdev *sd,
> +			    struct v4l2_subdev_state *state)
> +{
> +	static const struct v4l2_mbus_framefmt rcar_csi2_default_fmt = {
> +		.width		= 1920,
> +		.height		= 1080,
> +		.code		= MEDIA_BUS_FMT_RGB888_1X24,
> +		.colorspace	= V4L2_COLORSPACE_SRGB,
> +		.field		= V4L2_FIELD_NONE,
> +		.ycbcr_enc	= V4L2_YCBCR_ENC_DEFAULT,
> +		.quantization	= V4L2_QUANTIZATION_DEFAULT,
> +		.xfer_func	= V4L2_XFER_FUNC_DEFAULT,
> +	};
> +
> +	for (unsigned int i = RCAR_CSI2_SINK; i < NR_OF_RCAR_CSI2_PAD; i++)
> +		*v4l2_subdev_state_get_format(state, i) = rcar_csi2_default_fmt;
> +
> +	return 0;
> +}
> +
> +static const struct v4l2_subdev_internal_ops rcar_csi2_internal_ops = {
> +	.init_state = rcsi2_init_state,
> +};
> +
>  static irqreturn_t rcsi2_irq(int irq, void *data)
>  {
>  	struct rcar_csi2 *priv = data;
> @@ -1251,14 +1258,17 @@ static irqreturn_t rcsi2_irq(int irq, void *data)
>  
>  static irqreturn_t rcsi2_irq_thread(int irq, void *data)
>  {
> +	struct v4l2_subdev_state *state;
>  	struct rcar_csi2 *priv = data;
>  
> -	mutex_lock(&priv->lock);
> +	state = v4l2_subdev_lock_and_get_active_state(&priv->subdev);
> +
>  	rcsi2_stop(priv);
>  	usleep_range(1000, 2000);
> -	if (rcsi2_start(priv))
> +	if (rcsi2_start(priv, state))
>  		dev_warn(priv->dev, "Failed to restart CSI-2 receiver\n");
> -	mutex_unlock(&priv->lock);
> +
> +	v4l2_subdev_unlock_state(state);
>  
>  	return IRQ_HANDLED;
>  }
> @@ -1870,23 +1880,23 @@ static int rcsi2_probe(struct platform_device *pdev)
>  
>  	priv->dev = &pdev->dev;
>  
> -	mutex_init(&priv->lock);
>  	priv->stream_count = 0;
>  
>  	ret = rcsi2_probe_resources(priv, pdev);
>  	if (ret) {
>  		dev_err(priv->dev, "Failed to get resources\n");
> -		goto error_mutex;
> +		return ret;
>  	}
>  
>  	platform_set_drvdata(pdev, priv);
>  
>  	ret = rcsi2_parse_dt(priv);
>  	if (ret)
> -		goto error_mutex;
> +		return ret;
>  
>  	priv->subdev.owner = THIS_MODULE;
>  	priv->subdev.dev = &pdev->dev;
> +	priv->subdev.internal_ops = &rcar_csi2_internal_ops;
>  	v4l2_subdev_init(&priv->subdev, &rcar_csi2_subdev_ops);
>  	v4l2_set_subdevdata(&priv->subdev, &pdev->dev);
>  	snprintf(priv->subdev.name, sizeof(priv->subdev.name), "%s %s",
> @@ -1912,21 +1922,25 @@ static int rcsi2_probe(struct platform_device *pdev)
>  
>  	pm_runtime_enable(&pdev->dev);
>  
> +	ret = v4l2_subdev_init_finalize(&priv->subdev);
> +	if (ret)
> +		goto error_pm_runtime;
> +
>  	ret = v4l2_async_register_subdev(&priv->subdev);
>  	if (ret < 0)
> -		goto error_pm_runtime;
> +		goto error_subdev;
>  
>  	dev_info(priv->dev, "%d lanes found\n", priv->lanes);
>  
>  	return 0;
>  
> +error_subdev:
> +	v4l2_subdev_cleanup(&priv->subdev);
>  error_pm_runtime:
>  	pm_runtime_disable(&pdev->dev);
>  error_async:
>  	v4l2_async_nf_unregister(&priv->notifier);
>  	v4l2_async_nf_cleanup(&priv->notifier);
> -error_mutex:
> -	mutex_destroy(&priv->lock);
>  
>  	return ret;
>  }
> @@ -1941,8 +1955,6 @@ static void rcsi2_remove(struct platform_device *pdev)
>  	v4l2_subdev_cleanup(&priv->subdev);
>  
>  	pm_runtime_disable(&pdev->dev);
> -
> -	mutex_destroy(&priv->lock);
>  }
>  
>  static struct platform_driver rcar_csi2_pdrv = {
> -- 
> 2.44.0
>

Laurent Pinchart May 5, 2024, 9:52 p.m. UTC | #2

On Fri, May 03, 2024 at 08:03:21PM +0200, Niklas Söderlund wrote:
> Hi Jacopo,
> 
> Thanks for your work.
> 
> On 2024-05-03 17:51:19 +0200, Jacopo Mondi wrote:
> > Create the subdevice state with v4l2_subdev_init_finalize() and
> > implement the init_state() operation to guarantee the state is initialized.
> 
> This fails and produces -EPIPE error when trying to capture on R-Car M3N 
> using ADV748x. If I only apply patch 1, 2, 3 of this series it works as 
> expected, when I apply this as well capture breaks.
> 
> You can test this on a remote Gen3 board without any HDMI or CVBS 
> source, just enable a test patterns on the HDMI and AFE sources, see [1] 
> for my test-case output which demonstrates how I produce the failure.
> 
> Oddly enough if I use the old vin-test package I can capture from HDMI 
> while CVBS capture still fails with -EPIPE. Not sure what's going on.
> 
> 1. Ignore the "Unable to get format: Inappropriate ioctl for device 
>    (25)." from the "yavta --set-control ..." commands, they are 
>    unimportant and not new. Focus in the "Unable to start streaming: 
>    Broken pipe (32)." errors from "yavta -c10 --file=..  /dev/videoX" 
>    calls, they are not new ;-)
> 
> ===> star <===
> Last login: Fri May  3 17:48:06 2024
> 
> Renesas Salvator-X 2nd version board based on r8a77965
> 0;root@arm64:~
> arm64 ~ # echo wkbfirytku $$; rm -fr /tmp/vin-capture; echo ygxezpiinz $?
> echo wkbfirytku $$; rm -fr /tmp/vin-capture; echo ygxezpiinz $?
> 
> wkbfirytku 403
> ygxezpiinz 0
> echo agyxksooma $$; mkdir -p /tmp/vin-capture; echo kvwostutox $?
> 0;root@arm64:~
> arm64 ~ # echo agyxksooma $$; mkdir -p /tmp/vin-capture; echo kvwostutox $?
> 
> agyxksooma 403
> kvwostutox 0
> echo vtmzcdhjtc $$; grep -l 'adv748x 4-0070 afe' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo mwqkcmnuju $?
> 0;root@arm64:~
> arm64 ~ # echo vtmzcdhjtc $$; grep -l 'adv748x 4-0070 afe' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo mwqkcmnuju $?
> 
> vtmzcdhjtc 403
> /dev/v4l-subdev1
> mwqkcmnuju 0
> echo yavkazxvyn $$; grep -l 'VIN0 output' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo wpijcgewrd $?
> 0;root@arm64:~
> arm64 ~ # echo yavkazxvyn $$; grep -l 'VIN0 output' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo wpijcgewrd $?
> 
> yavkazxvyn 403
> /dev/video0
> wpijcgewrd 0
> echo nkitspntrm $$; for mdev in /dev/media*; do if [[ '$(media-ctl -d $mdev -p | grep 'rcar_vin')' != '' ]]; then echo $mdev; break; fi; done; echo ngoqmbhfqr $?
> 0;root@arm64:~
> arm64 ~ # echo nkitspntrm $$; for mdev in /dev/media*; do if [[ '$(media-ctl -d $mdev -p | grep 'rcar_vin')' != '' ]]; then echo $mdev; break; fi; done; echo ngoqmbhfqr $?
> 
> nkitspntrm 403
> /dev/media0
> ngoqmbhfqr 0
> echo ggokwokuyh $$; media-ctl -d /dev/media0 -r; echo yydmasvhba $?
> 0;root@arm64:~
> arm64 ~ # echo ggokwokuyh $$; media-ctl -d /dev/media0 -r; echo yydmasvhba $?
> 
> ggokwokuyh 403
> yydmasvhba 0
> 0;root@arm64:~
> echo ftqgotsvwt $$; media-ctl -d /dev/media0 -l "'adv748x 4-0070 afe':8 -> 'adv748x 4-0070 txb':0 [1]"; echo ohfyvhjfrt $?
> arm64 ~ # echo ftqgotsvwt $$; media-ctl -d /dev/media0 -l "'adv748x 4-0070 afe':8 -> 'adv748x 4-0070 txb':0 [1]"; echo ohfyvhjfrt $?
> 
> ftqgotsvwt 403
> ohfyvhjfrt 0
> 0;root@arm64:~
> echo nhtnyteajn $$; media-ctl -d /dev/media0 -l "'rcar_csi2 fea80000.csi2':1 -> 'VIN0 output':0 [1]"; echo vovincdzqi $?
> arm64 ~ # echo nhtnyteajn $$; media-ctl -d /dev/media0 -l "'rcar_csi2 fea80000.csi2':1 -> 'VIN0 output':0 [1]"; echo vovincdzqi $?
> 
> nhtnyteajn 403
> vovincdzqi 0
> 0;root@arm64:~
> echo rulkcoorky $$; media-ctl -d /dev/media0 --get-v4l2 "'adv748x 4-0070 afe':8"; echo esoiygqdfq $?
> arm64 ~ # echo rulkcoorky $$; media-ctl -d /dev/media0 --get-v4l2 "'adv748x 4-0070 afe':8"; echo esoiygqdfq $?
> 
> rulkcoorky 403
> 		[stream:0 fmt:UYVY8_2X8/720x240 field:alternate colorspace:smpte170m]
> esoiygqdfq 0
> 0;root@arm64:~
> echo dmdgcctvqh $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 afe':8 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo ighfsicfux $?
> arm64 ~ # echo dmdgcctvqh $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 afe':8 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo ighfsicfux $?
> 
> dmdgcctvqh 403
> ighfsicfux 0
> 0;root@arm64:~
> echo mqlvxrvync $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 txb':0 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo elpiosmlzj $?

Should this be pad 1 instead of pad 0 ?

> arm64 ~ # echo mqlvxrvync $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 txb':0 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo elpiosmlzj $?
> 
> mqlvxrvync 403
> elpiosmlzj 0
> 0;root@arm64:~
> echo aoldaiatak $$; media-ctl -d /dev/media0 -V "'rcar_csi2 fea80000.csi2':1 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo iymsospuex $?
> arm64 ~ # echo aoldaiatak $$; media-ctl -d /dev/media0 -V "'rcar_csi2 fea80000.csi2':1 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo iymsospuex $?
> 
> aoldaiatak 403
> iymsospuex 0
> 0;root@arm64:~
> echo nxpbvfvtbv $$; yavta -f RGB565 -s 720x480 --field interlaced /dev/video0; echo dppdatfote $?
> arm64 ~ # echo nxpbvfvtbv $$; yavta -f RGB565 -s 720x480 --field interlaced /dev/video0; echo dppdatfote $?
> 
> nxpbvfvtbv 403
> Device /dev/video0 opened.
> Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
> Video format set: RGB565 (50424752) 720x480 (stride 1440) field interlaced buffer size 691200
> Video format: RGB565 (50424752) 720x480 (stride 1440) field interlaced buffer size 691200
> dppdatfote 0
> echo zsqtrrojrr $$; yavta --set-control '0x009f0903 1' /dev/v4l-subdev1; echo xkrxhzzdcq $?
> 0;root@arm64:~
> arm64 ~ # echo zsqtrrojrr $$; yavta --set-control '0x009f0903 1' /dev/v4l-subdev1; echo xkrxhzzdcq $?
> 
> zsqtrrojrr 403
> Device /dev/v4l-subdev1 opened.
> Control 0x009f0903 set to 1, is 1
> Unable to get format: Inappropriate ioctl for device (25).
> xkrxhzzdcq 0
> echo jifvldisax $$; yavta -c10 --file=/tmp/vin-capture/cvbs-solid-#.bin /dev/video0; echo tmzmlnjlsq $?
> 0;root@arm64:~
> arm64 ~ # echo jifvldisax $$; yavta -c10 --file=/tmp/vin-capture/cvbs-solid-#.bin /dev/video0; echo tmzmlnjlsq $?
> 
> jifvldisax 403
> Device /dev/video0 opened.
> Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
> Video format: RGB565 (50424752) 720x480 (stride 1440) field interlaced buffer size 691200
> 8 buffers requested.
> length: 691200 offset: 0 timestamp type/source: mono/EoF
> Buffer 0/0 mapped at address 0xffffb1037000.
> length: 691200 offset: 32768 timestamp type/source: mono/EoF
> Buffer 1/0 mapped at address 0xffffb0f8e000.
> length: 691200 offset: 65536 timestamp type/source: mono/EoF
> Buffer 2/0 mapped at address 0xffffb0ee5000.
> length: 691200 offset: 98304 timestamp type/source: mono/EoF
> Buffer 3/0 mapped at address 0xffffb0e3c000.
> length: 691200 offset: 131072 timestamp type/source: mono/EoF
> Buffer 4/0 mapped at address 0xffffb0d93000.
> length: 691200 offset: 163840 timestamp type/source: mono/EoF
> Buffer 5/0 mapped at address 0xffffb0cea000.
> length: 691200 offset: 196608 timestamp type/source: mono/EoF
> Buffer 6/0 mapped at address 0xffffb0c41000.
> length: 691200 offset: 229376 timestamp type/source: mono/EoF
> Buffer 7/0 mapped at address 0xffffb0b98000.
> Unable to start streaming: Broken pipe (32).
> 8 buffers released.
> tmzmlnjlsq 0
> echo wojwgdpxnx $$; yavta --set-control '0x009f0903 2' /dev/v4l-subdev1; echo dghaavszch $?
> 0;root@arm64:~
> arm64 ~ # echo wojwgdpxnx $$; yavta --set-control '0x009f0903 2' /dev/v4l-subdev1; echo dghaavszch $?
> 
> wojwgdpxnx 403
> Device /dev/v4l-subdev1 opened.
> Control 0x009f0903 set to 2, is 2
> Unable to get format: Inappropriate ioctl for device (25).
> dghaavszch 0
> 0;root@arm64:~
> echo tldblgblou $$; yavta -c10 --file=/tmp/vin-capture/cvbs-colorbars-#.bin /dev/video0; echo pofbqvttib $?
> arm64 ~ # echo tldblgblou $$; yavta -c10 --file=/tmp/vin-capture/cvbs-colorbars-#.bin /dev/video0; echo pofbqvttib $?
> 
> tldblgblou 403
> Device /dev/video0 opened.
> Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
> Video format: RGB565 (50424752) 720x480 (stride 1440) field interlaced buffer size 691200
> 8 buffers requested.
> length: 691200 offset: 0 timestamp type/source: mono/EoF
> Buffer 0/0 mapped at address 0xffffb75f7000.
> length: 691200 offset: 32768 timestamp type/source: mono/EoF
> Buffer 1/0 mapped at address 0xffffb754e000.
> length: 691200 offset: 65536 timestamp type/source: mono/EoF
> Buffer 2/0 mapped at address 0xffffb74a5000.
> length: 691200 offset: 98304 timestamp type/source: mono/EoF
> Buffer 3/0 mapped at address 0xffffb73fc000.
> length: 691200 offset: 131072 timestamp type/source: mono/EoF
> Buffer 4/0 mapped at address 0xffffb7353000.
> length: 691200 offset: 163840 timestamp type/source: mono/EoF
> Buffer 5/0 mapped at address 0xffffb72aa000.
> length: 691200 offset: 196608 timestamp type/source: mono/EoF
> Buffer 6/0 mapped at address 0xffffb7201000.
> length: 691200 offset: 229376 timestamp type/source: mono/EoF
> Buffer 7/0 mapped at address 0xffffb7158000.
> Unable to start streaming: Broken pipe (32).
> 8 buffers released.
> pofbqvttib 0
> 0;root@arm64:~
> echo maubyyzesr $$; yavta --set-control '0x009f0903 0' /dev/v4l-subdev1; echo dzbvegabvy $?
> arm64 ~ # echo maubyyzesr $$; yavta --set-control '0x009f0903 0' /dev/v4l-subdev1; echo dzbvegabvy $?
> 
> maubyyzesr 403
> Device /dev/v4l-subdev1 opened.
> Control 0x009f0903 set to 0, is 0
> Unable to get format: Inappropriate ioctl for device (25).
> dzbvegabvy 0
> 0;root@arm64:~
> echo pffcsadwlt $$; test -e /tmp/vin-capture/cvbs-solid-000007.bin; echo xilwxnvrrd $?
> arm64 ~ # echo pffcsadwlt $$; test -e /tmp/vin-capture/cvbs-solid-000007.bin; echo xilwxnvrrd $?
> 
> pffcsadwlt 403
> xilwxnvrrd 1
> echo grglvpwocj $$; grep -l 'adv748x 4-0070 hdmi' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo hvcawnkqdt $?
> 0;root@arm64:~
> arm64 ~ # echo grglvpwocj $$; grep -l 'adv748x 4-0070 hdmi' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo hvcawnkqdt $?
> 
> grglvpwocj 403
> /dev/v4l-subdev4
> hvcawnkqdt 0
> echo nnpccbuzak $$; media-ctl -d /dev/media0 -r; echo zigvuehatt $?
> 0;root@arm64:~
> arm64 ~ # echo nnpccbuzak $$; media-ctl -d /dev/media0 -r; echo zigvuehatt $?
> 
> nnpccbuzak 403
> zigvuehatt 0
> echo xyngygxuyr $$; media-ctl -d /dev/media0 -l "'adv748x 4-0070 hdmi':1 -> 'adv748x 4-0070 txa':0 [1]"; echo oknofsbyvn $?
> 0;root@arm64:~
> arm64 ~ # echo xyngygxuyr $$; media-ctl -d /dev/media0 -l "'adv748x 4-0070 hdmi':1 -> 'adv748x 4-0070 txa':0 [1]"; echo oknofsbyvn $?
> 
> xyngygxuyr 403
> oknofsbyvn 0
> 0;root@arm64:~
> echo jkzuanypyp $$; media-ctl -d /dev/media0 -l "'rcar_csi2 feaa0000.csi2':1 -> 'VIN0 output':0 [1]"; echo onsaxggllz $?
> arm64 ~ # echo jkzuanypyp $$; media-ctl -d /dev/media0 -l "'rcar_csi2 feaa0000.csi2':1 -> 'VIN0 output':0 [1]"; echo onsaxggllz $?
> 
> jkzuanypyp 403
> onsaxggllz 0
> 0;root@arm64:~
> echo lttzkqwwoa $$; media-ctl -d /dev/media0 --get-v4l2 "'adv748x 4-0070 hdmi':1"; echo imxtuqbxgf $?
> arm64 ~ # echo lttzkqwwoa $$; media-ctl -d /dev/media0 --get-v4l2 "'adv748x 4-0070 hdmi':1"; echo imxtuqbxgf $?
> 
> lttzkqwwoa 403
> 		[stream:0 fmt:RGB888_1X24/1280x720 field:none colorspace:srgb]
> imxtuqbxgf 0
> 0;root@arm64:~
> echo degzwngmzk $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 hdmi':1 [fmt:RGB888_1X24/1280x720 field:none]"; echo vgqpdhbhjt $?
> arm64 ~ # echo degzwngmzk $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 hdmi':1 [fmt:RGB888_1X24/1280x720 field:none]"; echo vgqpdhbhjt $?
> 
> degzwngmzk 403
> vgqpdhbhjt 0
> 0;root@arm64:~
> echo iwtingcfbz $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 txa':0 [fmt:RGB888_1X24/1280x720 field:none]"; echo qircbjupbq $?
> arm64 ~ # echo iwtingcfbz $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 txa':0 [fmt:RGB888_1X24/1280x720 field:none]"; echo qircbjupbq $?
> 
> iwtingcfbz 403
> qircbjupbq 0
> 0;root@arm64:~
> echo twrjqisqff $$; media-ctl -d /dev/media0 -V "'rcar_csi2 feaa0000.csi2':1 [fmt:RGB888_1X24/1280x720 field:none]"; echo ocaivovrxk $?
> arm64 ~ # echo twrjqisqff $$; media-ctl -d /dev/media0 -V "'rcar_csi2 feaa0000.csi2':1 [fmt:RGB888_1X24/1280x720 field:none]"; echo ocaivovrxk $?
> 
> twrjqisqff 403
> ocaivovrxk 0
> echo ajqwydmzik $$; yavta -f RGB565 -s 1280x720 --field none /dev/video0; echo fayawxvllj $?
> 0;root@arm64:~
> arm64 ~ # echo ajqwydmzik $$; yavta -f RGB565 -s 1280x720 --field none /dev/video0; echo fayawxvllj $?
> 
> ajqwydmzik 403
> Device /dev/video0 opened.
> Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
> Video format set: RGB565 (50424752) 1280x720 (stride 2560) field none buffer size 1843200
> Video format: RGB565 (50424752) 1280x720 (stride 2560) field none buffer size 1843200
> fayawxvllj 0
> echo pealtxybun $$; yavta --set-control '0x009f0903 1' /dev/v4l-subdev4; echo juhrczaeao $?
> 0;root@arm64:~
> arm64 ~ # echo pealtxybun $$; yavta --set-control '0x009f0903 1' /dev/v4l-subdev4; echo juhrczaeao $?
> 
> pealtxybun 403
> Device /dev/v4l-subdev4 opened.
> Control 0x009f0903 set to 1, is 1
> Unable to get format: Inappropriate ioctl for device (25).
> juhrczaeao 0
> 0;root@arm64:~
> echo oaxoraqdid $$; yavta -c10 --file=/tmp/vin-capture/hdmi-solid-#.bin /dev/video0; echo bfsxvmqitj $?
> arm64 ~ # echo oaxoraqdid $$; yavta -c10 --file=/tmp/vin-capture/hdmi-solid-#.bin /dev/video0; echo bfsxvmqitj $?
> 
> oaxoraqdid 403
> Device /dev/video0 opened.
> Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
> Video format: RGB565 (50424752) 1280x720 (stride 2560) field none buffer size 1843200
> 8 buffers requested.
> length: 1843200 offset: 0 timestamp type/source: mono/EoF
> Buffer 0/0 mapped at address 0xffffafa8e000.
> length: 1843200 offset: 32768 timestamp type/source: mono/EoF
> Buffer 1/0 mapped at address 0xffffaf8cc000.
> length: 1843200 offset: 65536 timestamp type/source: mono/EoF
> Buffer 2/0 mapped at address 0xffffaf70a000.
> length: 1843200 offset: 98304 timestamp type/source: mono/EoF
> Buffer 3/0 mapped at address 0xffffaf548000.
> length: 1843200 offset: 131072 timestamp type/source: mono/EoF
> Buffer 4/0 mapped at address 0xffffaf386000.
> length: 1843200 offset: 163840 timestamp type/source: mono/EoF
> Buffer 5/0 mapped at address 0xffffaf1c4000.
> length: 1843200 offset: 196608 timestamp type/source: mono/EoF
> Buffer 6/0 mapped at address 0xffffaf002000.
> length: 1843200 offset: 229376 timestamp type/source: mono/EoF
> Buffer 7/0 mapped at address 0xffffaee40000.
> Unable to start streaming: Broken pipe (32).
> 8 buffers released.
> bfsxvmqitj 0
> echo pmbwbnrkkw $$; yavta --set-control '0x009f0903 2' /dev/v4l-subdev4; echo ucgivtjwvw $?
> 0;root@arm64:~
> arm64 ~ # echo pmbwbnrkkw $$; yavta --set-control '0x009f0903 2' /dev/v4l-subdev4; echo ucgivtjwvw $?
> 
> pmbwbnrkkw 403
> Device /dev/v4l-subdev4 opened.
> Control 0x009f0903 set to 2, is 2
> Unable to get format: Inappropriate ioctl for device (25).
> ucgivtjwvw 0
> 0;root@arm64:~
> echo rvkbtaiuan $$; yavta -c10 --file=/tmp/vin-capture/hdmi-colorbars-#.bin /dev/video0; echo fdlcrvrylc $?
> arm64 ~ # echo rvkbtaiuan $$; yavta -c10 --file=/tmp/vin-capture/hdmi-colorbars-#.bin /dev/video0; echo fdlcrvrylc $?
> 
> rvkbtaiuan 403
> Device /dev/video0 opened.
> Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
> Video format: RGB565 (50424752) 1280x720 (stride 2560) field none buffer size 1843200
> 8 buffers requested.
> length: 1843200 offset: 0 timestamp type/source: mono/EoF
> Buffer 0/0 mapped at address 0xffff86f8e000.
> length: 1843200 offset: 32768 timestamp type/source: mono/EoF
> Buffer 1/0 mapped at address 0xffff86dcc000.
> length: 1843200 offset: 65536 timestamp type/source: mono/EoF
> Buffer 2/0 mapped at address 0xffff86c0a000.
> length: 1843200 offset: 98304 timestamp type/source: mono/EoF
> Buffer 3/0 mapped at address 0xffff86a48000.
> length: 1843200 offset: 131072 timestamp type/source: mono/EoF
> Buffer 4/0 mapped at address 0xffff86886000.
> length: 1843200 offset: 163840 timestamp type/source: mono/EoF
> Buffer 5/0 mapped at address 0xffff866c4000.
> length: 1843200 offset: 196608 timestamp type/source: mono/EoF
> Buffer 6/0 mapped at address 0xffff86502000.
> length: 1843200 offset: 229376 timestamp type/source: mono/EoF
> Buffer 7/0 mapped at address 0xffff86340000.
> Unable to start streaming: Broken pipe (32).
> 8 buffers released.
> fdlcrvrylc 0
> 0;root@arm64:~
> echo hrgnrsupul $$; yavta --set-control '0x009f0903 0' /dev/v4l-subdev4; echo bvgysmcxve $?
> arm64 ~ # echo hrgnrsupul $$; yavta --set-control '0x009f0903 0' /dev/v4l-subdev4; echo bvgysmcxve $?
> 
> hrgnrsupul 403
> Device /dev/v4l-subdev4 opened.
> Control 0x009f0903 set to 0, is 0
> Unable to get format: Inappropriate ioctl for device (25).
> bvgysmcxve 0
> echo znlqovrrra $$; test -e /tmp/vin-capture/hdmi-solid-000007.bin; echo sjpcuiptaf $?
> 0;root@arm64:~
> arm64 ~ # echo znlqovrrra $$; test -e /tmp/vin-capture/hdmi-solid-000007.bin; echo sjpcuiptaf $?
> 
> znlqovrrra 403
> sjpcuiptaf 1
> exit
> ===> end <===
> 
> > 
> > Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
> > ---
> >  drivers/media/platform/renesas/rcar-csi2.c | 138 +++++++++++----------
> >  1 file changed, 75 insertions(+), 63 deletions(-)
> > 
> > diff --git a/drivers/media/platform/renesas/rcar-csi2.c b/drivers/media/platform/renesas/rcar-csi2.c
> > index 2d464e43a5be..4d4dfb59b025 100644
> > --- a/drivers/media/platform/renesas/rcar-csi2.c
> > +++ b/drivers/media/platform/renesas/rcar-csi2.c
> > @@ -587,7 +587,8 @@ enum rcar_csi2_pads {
> >  struct rcar_csi2_info {
> >  	int (*init_phtw)(struct rcar_csi2 *priv, unsigned int mbps);
> >  	int (*phy_post_init)(struct rcar_csi2 *priv);
> > -	int (*start_receiver)(struct rcar_csi2 *priv);
> > +	int (*start_receiver)(struct rcar_csi2 *priv,
> > +			      struct v4l2_subdev_state *state);
> >  	void (*enter_standby)(struct rcar_csi2 *priv);
> >  	const struct rcsi2_mbps_reg *hsfreqrange;
> >  	unsigned int csi0clkfreqrange;
> > @@ -613,8 +614,6 @@ struct rcar_csi2 {
> >  
> >  	int channel_vc[4];
> >  
> > -	struct mutex lock; /* Protects mf and stream_count. */
> > -	struct v4l2_mbus_framefmt mf;
> >  	int stream_count;
> >  
> >  	bool cphy;
> > @@ -808,20 +807,25 @@ static int rcsi2_get_active_lanes(struct rcar_csi2 *priv,
> >  	return 0;
> >  }
> >  
> > -static int rcsi2_start_receiver_gen3(struct rcar_csi2 *priv)
> > +static int rcsi2_start_receiver_gen3(struct rcar_csi2 *priv,
> > +				     struct v4l2_subdev_state *state)
> >  {
> >  	const struct rcar_csi2_format *format;
> >  	u32 phycnt, vcdt = 0, vcdt2 = 0, fld = 0;
> > +	struct v4l2_mbus_framefmt *fmt;
> >  	unsigned int lanes;
> >  	unsigned int i;
> >  	int mbps, ret;
> >  
> > +	/* Use the format on the sink pad to compute the receiver config. */
> > +	fmt = v4l2_subdev_state_get_format(state, RCAR_CSI2_SINK);
> > +
> >  	dev_dbg(priv->dev, "Input size (%ux%u%c)\n",
> > -		priv->mf.width, priv->mf.height,
> > -		priv->mf.field == V4L2_FIELD_NONE ? 'p' : 'i');
> > +		fmt->width, fmt->height,
> > +		fmt->field == V4L2_FIELD_NONE ? 'p' : 'i');
> >  
> >  	/* Code is validated in set_fmt. */
> > -	format = rcsi2_code_to_fmt(priv->mf.code);
> > +	format = rcsi2_code_to_fmt(fmt->code);
> >  	if (!format)
> >  		return -EINVAL;
> >  
> > @@ -849,11 +853,11 @@ static int rcsi2_start_receiver_gen3(struct rcar_csi2 *priv)
> >  			vcdt2 |= vcdt_part << ((i % 2) * 16);
> >  	}
> >  
> > -	if (priv->mf.field == V4L2_FIELD_ALTERNATE) {
> > +	if (fmt->field == V4L2_FIELD_ALTERNATE) {
> >  		fld = FLD_DET_SEL(1) | FLD_FLD_EN4 | FLD_FLD_EN3 | FLD_FLD_EN2
> >  			| FLD_FLD_EN;
> >  
> > -		if (priv->mf.height == 240)
> > +		if (fmt->height == 240)
> >  			fld |= FLD_FLD_NUM(0);
> >  		else
> >  			fld |= FLD_FLD_NUM(1);
> > @@ -1049,15 +1053,18 @@ static int rcsi2_c_phy_setting_v4h(struct rcar_csi2 *priv, int msps)
> >  	return 0;
> >  }
> >  
> > -static int rcsi2_start_receiver_v4h(struct rcar_csi2 *priv)
> > +static int rcsi2_start_receiver_v4h(struct rcar_csi2 *priv,
> > +				    struct v4l2_subdev_state *state)
> >  {
> >  	const struct rcar_csi2_format *format;
> > +	struct v4l2_mbus_framefmt *fmt;
> >  	unsigned int lanes;
> >  	int msps;
> >  	int ret;
> >  
> > -	/* Calculate parameters */
> > -	format = rcsi2_code_to_fmt(priv->mf.code);
> > +	/* Use the format on the sink pad to compute the receiver config. */
> > +	fmt = v4l2_subdev_state_get_format(state, RCAR_CSI2_SINK);
> > +	format = rcsi2_code_to_fmt(fmt->code);
> >  	if (!format)
> >  		return -EINVAL;
> >  
> > @@ -1114,7 +1121,7 @@ static int rcsi2_start_receiver_v4h(struct rcar_csi2 *priv)
> >  	return 0;
> >  }
> >  
> > -static int rcsi2_start(struct rcar_csi2 *priv)
> > +static int rcsi2_start(struct rcar_csi2 *priv, struct v4l2_subdev_state *state)
> >  {
> >  	int ret;
> >  
> > @@ -1122,7 +1129,7 @@ static int rcsi2_start(struct rcar_csi2 *priv)
> >  	if (ret < 0)
> >  		return ret;
> >  
> > -	ret = priv->info->start_receiver(priv);
> > +	ret = priv->info->start_receiver(priv, state);
> >  	if (ret) {
> >  		rcsi2_enter_standby(priv);
> >  		return ret;
> > @@ -1146,17 +1153,16 @@ static void rcsi2_stop(struct rcar_csi2 *priv)
> >  static int rcsi2_s_stream(struct v4l2_subdev *sd, int enable)
> >  {
> >  	struct rcar_csi2 *priv = sd_to_csi2(sd);
> > +	struct v4l2_subdev_state *state;
> >  	int ret = 0;
> >  
> > -	mutex_lock(&priv->lock);
> > +	if (!priv->remote)
> > +		return -ENODEV;
> >  
> > -	if (!priv->remote) {
> > -		ret = -ENODEV;
> > -		goto out;
> > -	}
> > +	state = v4l2_subdev_lock_and_get_active_state(&priv->subdev);
> >  
> >  	if (enable && priv->stream_count == 0) {
> > -		ret = rcsi2_start(priv);
> > +		ret = rcsi2_start(priv, state);
> >  		if (ret)
> >  			goto out;
> >  	} else if (!enable && priv->stream_count == 1) {
> > @@ -1165,49 +1171,26 @@ static int rcsi2_s_stream(struct v4l2_subdev *sd, int enable)
> >  
> >  	priv->stream_count += enable ? 1 : -1;
> >  out:
> > -	mutex_unlock(&priv->lock);
> > +	v4l2_subdev_unlock_state(state);
> >  
> >  	return ret;
> >  }
> >  
> >  static int rcsi2_set_pad_format(struct v4l2_subdev *sd,
> > -				struct v4l2_subdev_state *sd_state,
> > +				struct v4l2_subdev_state *state,
> >  				struct v4l2_subdev_format *format)
> >  {
> > -	struct rcar_csi2 *priv = sd_to_csi2(sd);
> > -	struct v4l2_mbus_framefmt *framefmt;
> > -
> > -	mutex_lock(&priv->lock);
> > +	if (format->pad > RCAR_CSI2_SINK)
> > +		return v4l2_subdev_get_fmt(sd, state, format);
> >  
> >  	if (!rcsi2_code_to_fmt(format->format.code))
> >  		format->format.code = rcar_csi2_formats[0].code;
> >  
> > -	if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
> > -		priv->mf = format->format;
> > -	} else {
> > -		framefmt = v4l2_subdev_state_get_format(sd_state, 0);
> > -		*framefmt = format->format;
> > -	}
> > -
> > -	mutex_unlock(&priv->lock);
> > -
> > -	return 0;
> > -}
> > -
> > -static int rcsi2_get_pad_format(struct v4l2_subdev *sd,
> > -				struct v4l2_subdev_state *sd_state,
> > -				struct v4l2_subdev_format *format)
> > -{
> > -	struct rcar_csi2 *priv = sd_to_csi2(sd);
> > -
> > -	mutex_lock(&priv->lock);
> > -
> > -	if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
> > -		format->format = priv->mf;
> > -	else
> > -		format->format = *v4l2_subdev_state_get_format(sd_state, 0);
> > +	*v4l2_subdev_state_get_format(state, format->pad) = format->format;
> >  
> > -	mutex_unlock(&priv->lock);
> > +	/* Propagate the format to the source pads. */
> > +	for (unsigned int i = RCAR_CSI2_SOURCE_VC0; i < NR_OF_RCAR_CSI2_PAD; i++)
> > +		*v4l2_subdev_state_get_format(state, i) = format->format;
> >  
> >  	return 0;
> >  }
> > @@ -1218,7 +1201,7 @@ static const struct v4l2_subdev_video_ops rcar_csi2_video_ops = {
> >  
> >  static const struct v4l2_subdev_pad_ops rcar_csi2_pad_ops = {
> >  	.set_fmt = rcsi2_set_pad_format,
> > -	.get_fmt = rcsi2_get_pad_format,
> > +	.get_fmt = v4l2_subdev_get_fmt,
> >  };
> >  
> >  static const struct v4l2_subdev_ops rcar_csi2_subdev_ops = {
> > @@ -1226,6 +1209,30 @@ static const struct v4l2_subdev_ops rcar_csi2_subdev_ops = {
> >  	.pad	= &rcar_csi2_pad_ops,
> >  };
> >  
> > +static int rcsi2_init_state(struct v4l2_subdev *sd,
> > +			    struct v4l2_subdev_state *state)
> > +{
> > +	static const struct v4l2_mbus_framefmt rcar_csi2_default_fmt = {
> > +		.width		= 1920,
> > +		.height		= 1080,
> > +		.code		= MEDIA_BUS_FMT_RGB888_1X24,
> > +		.colorspace	= V4L2_COLORSPACE_SRGB,
> > +		.field		= V4L2_FIELD_NONE,
> > +		.ycbcr_enc	= V4L2_YCBCR_ENC_DEFAULT,
> > +		.quantization	= V4L2_QUANTIZATION_DEFAULT,
> > +		.xfer_func	= V4L2_XFER_FUNC_DEFAULT,
> > +	};
> > +
> > +	for (unsigned int i = RCAR_CSI2_SINK; i < NR_OF_RCAR_CSI2_PAD; i++)
> > +		*v4l2_subdev_state_get_format(state, i) = rcar_csi2_default_fmt;
> > +
> > +	return 0;
> > +}
> > +
> > +static const struct v4l2_subdev_internal_ops rcar_csi2_internal_ops = {
> > +	.init_state = rcsi2_init_state,
> > +};
> > +
> >  static irqreturn_t rcsi2_irq(int irq, void *data)
> >  {
> >  	struct rcar_csi2 *priv = data;
> > @@ -1251,14 +1258,17 @@ static irqreturn_t rcsi2_irq(int irq, void *data)
> >  
> >  static irqreturn_t rcsi2_irq_thread(int irq, void *data)
> >  {
> > +	struct v4l2_subdev_state *state;
> >  	struct rcar_csi2 *priv = data;
> >  
> > -	mutex_lock(&priv->lock);
> > +	state = v4l2_subdev_lock_and_get_active_state(&priv->subdev);
> > +
> >  	rcsi2_stop(priv);
> >  	usleep_range(1000, 2000);
> > -	if (rcsi2_start(priv))
> > +	if (rcsi2_start(priv, state))
> >  		dev_warn(priv->dev, "Failed to restart CSI-2 receiver\n");
> > -	mutex_unlock(&priv->lock);
> > +
> > +	v4l2_subdev_unlock_state(state);
> >  
> >  	return IRQ_HANDLED;
> >  }
> > @@ -1870,23 +1880,23 @@ static int rcsi2_probe(struct platform_device *pdev)
> >  
> >  	priv->dev = &pdev->dev;
> >  
> > -	mutex_init(&priv->lock);
> >  	priv->stream_count = 0;
> >  
> >  	ret = rcsi2_probe_resources(priv, pdev);
> >  	if (ret) {
> >  		dev_err(priv->dev, "Failed to get resources\n");
> > -		goto error_mutex;
> > +		return ret;
> >  	}
> >  
> >  	platform_set_drvdata(pdev, priv);
> >  
> >  	ret = rcsi2_parse_dt(priv);
> >  	if (ret)
> > -		goto error_mutex;
> > +		return ret;
> >  
> >  	priv->subdev.owner = THIS_MODULE;
> >  	priv->subdev.dev = &pdev->dev;
> > +	priv->subdev.internal_ops = &rcar_csi2_internal_ops;
> >  	v4l2_subdev_init(&priv->subdev, &rcar_csi2_subdev_ops);
> >  	v4l2_set_subdevdata(&priv->subdev, &pdev->dev);
> >  	snprintf(priv->subdev.name, sizeof(priv->subdev.name), "%s %s",
> > @@ -1912,21 +1922,25 @@ static int rcsi2_probe(struct platform_device *pdev)
> >  
> >  	pm_runtime_enable(&pdev->dev);
> >  
> > +	ret = v4l2_subdev_init_finalize(&priv->subdev);
> > +	if (ret)
> > +		goto error_pm_runtime;
> > +
> >  	ret = v4l2_async_register_subdev(&priv->subdev);
> >  	if (ret < 0)
> > -		goto error_pm_runtime;
> > +		goto error_subdev;
> >  
> >  	dev_info(priv->dev, "%d lanes found\n", priv->lanes);
> >  
> >  	return 0;
> >  
> > +error_subdev:
> > +	v4l2_subdev_cleanup(&priv->subdev);
> >  error_pm_runtime:
> >  	pm_runtime_disable(&pdev->dev);
> >  error_async:
> >  	v4l2_async_nf_unregister(&priv->notifier);
> >  	v4l2_async_nf_cleanup(&priv->notifier);
> > -error_mutex:
> > -	mutex_destroy(&priv->lock);
> >  
> >  	return ret;
> >  }
> > @@ -1941,8 +1955,6 @@ static void rcsi2_remove(struct platform_device *pdev)
> >  	v4l2_subdev_cleanup(&priv->subdev);
> >  
> >  	pm_runtime_disable(&pdev->dev);
> > -
> > -	mutex_destroy(&priv->lock);
> >  }
> >  
> >  static struct platform_driver rcar_csi2_pdrv = {

Laurent Pinchart May 5, 2024, 9:54 p.m. UTC | #3

Hi Jacopo,

Thank you for the patch.

On Fri, May 03, 2024 at 05:51:19PM +0200, Jacopo Mondi wrote:
> Create the subdevice state with v4l2_subdev_init_finalize() and
> implement the init_state() operation to guarantee the state is initialized.
> 
> Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
> ---
>  drivers/media/platform/renesas/rcar-csi2.c | 138 +++++++++++----------
>  1 file changed, 75 insertions(+), 63 deletions(-)
> 
> diff --git a/drivers/media/platform/renesas/rcar-csi2.c b/drivers/media/platform/renesas/rcar-csi2.c
> index 2d464e43a5be..4d4dfb59b025 100644
> --- a/drivers/media/platform/renesas/rcar-csi2.c
> +++ b/drivers/media/platform/renesas/rcar-csi2.c
> @@ -587,7 +587,8 @@ enum rcar_csi2_pads {
>  struct rcar_csi2_info {
>  	int (*init_phtw)(struct rcar_csi2 *priv, unsigned int mbps);
>  	int (*phy_post_init)(struct rcar_csi2 *priv);
> -	int (*start_receiver)(struct rcar_csi2 *priv);
> +	int (*start_receiver)(struct rcar_csi2 *priv,
> +			      struct v4l2_subdev_state *state);
>  	void (*enter_standby)(struct rcar_csi2 *priv);
>  	const struct rcsi2_mbps_reg *hsfreqrange;
>  	unsigned int csi0clkfreqrange;
> @@ -613,8 +614,6 @@ struct rcar_csi2 {
>  
>  	int channel_vc[4];
>  
> -	struct mutex lock; /* Protects mf and stream_count. */
> -	struct v4l2_mbus_framefmt mf;
>  	int stream_count;
>  
>  	bool cphy;
> @@ -808,20 +807,25 @@ static int rcsi2_get_active_lanes(struct rcar_csi2 *priv,
>  	return 0;
>  }
>  
> -static int rcsi2_start_receiver_gen3(struct rcar_csi2 *priv)
> +static int rcsi2_start_receiver_gen3(struct rcar_csi2 *priv,
> +				     struct v4l2_subdev_state *state)
>  {
>  	const struct rcar_csi2_format *format;
>  	u32 phycnt, vcdt = 0, vcdt2 = 0, fld = 0;
> +	struct v4l2_mbus_framefmt *fmt;

const

>  	unsigned int lanes;
>  	unsigned int i;
>  	int mbps, ret;
>  
> +	/* Use the format on the sink pad to compute the receiver config. */
> +	fmt = v4l2_subdev_state_get_format(state, RCAR_CSI2_SINK);
> +
>  	dev_dbg(priv->dev, "Input size (%ux%u%c)\n",
> -		priv->mf.width, priv->mf.height,
> -		priv->mf.field == V4L2_FIELD_NONE ? 'p' : 'i');
> +		fmt->width, fmt->height,
> +		fmt->field == V4L2_FIELD_NONE ? 'p' : 'i');
>  
>  	/* Code is validated in set_fmt. */
> -	format = rcsi2_code_to_fmt(priv->mf.code);
> +	format = rcsi2_code_to_fmt(fmt->code);
>  	if (!format)
>  		return -EINVAL;
>  
> @@ -849,11 +853,11 @@ static int rcsi2_start_receiver_gen3(struct rcar_csi2 *priv)
>  			vcdt2 |= vcdt_part << ((i % 2) * 16);
>  	}
>  
> -	if (priv->mf.field == V4L2_FIELD_ALTERNATE) {
> +	if (fmt->field == V4L2_FIELD_ALTERNATE) {
>  		fld = FLD_DET_SEL(1) | FLD_FLD_EN4 | FLD_FLD_EN3 | FLD_FLD_EN2
>  			| FLD_FLD_EN;
>  
> -		if (priv->mf.height == 240)
> +		if (fmt->height == 240)
>  			fld |= FLD_FLD_NUM(0);
>  		else
>  			fld |= FLD_FLD_NUM(1);
> @@ -1049,15 +1053,18 @@ static int rcsi2_c_phy_setting_v4h(struct rcar_csi2 *priv, int msps)
>  	return 0;
>  }
>  
> -static int rcsi2_start_receiver_v4h(struct rcar_csi2 *priv)
> +static int rcsi2_start_receiver_v4h(struct rcar_csi2 *priv,
> +				    struct v4l2_subdev_state *state)
>  {
>  	const struct rcar_csi2_format *format;
> +	struct v4l2_mbus_framefmt *fmt;

const

>  	unsigned int lanes;
>  	int msps;
>  	int ret;
>  
> -	/* Calculate parameters */
> -	format = rcsi2_code_to_fmt(priv->mf.code);
> +	/* Use the format on the sink pad to compute the receiver config. */
> +	fmt = v4l2_subdev_state_get_format(state, RCAR_CSI2_SINK);
> +	format = rcsi2_code_to_fmt(fmt->code);
>  	if (!format)
>  		return -EINVAL;
>  
> @@ -1114,7 +1121,7 @@ static int rcsi2_start_receiver_v4h(struct rcar_csi2 *priv)
>  	return 0;
>  }
>  
> -static int rcsi2_start(struct rcar_csi2 *priv)
> +static int rcsi2_start(struct rcar_csi2 *priv, struct v4l2_subdev_state *state)
>  {
>  	int ret;
>  
> @@ -1122,7 +1129,7 @@ static int rcsi2_start(struct rcar_csi2 *priv)
>  	if (ret < 0)
>  		return ret;
>  
> -	ret = priv->info->start_receiver(priv);
> +	ret = priv->info->start_receiver(priv, state);
>  	if (ret) {
>  		rcsi2_enter_standby(priv);
>  		return ret;
> @@ -1146,17 +1153,16 @@ static void rcsi2_stop(struct rcar_csi2 *priv)
>  static int rcsi2_s_stream(struct v4l2_subdev *sd, int enable)
>  {
>  	struct rcar_csi2 *priv = sd_to_csi2(sd);
> +	struct v4l2_subdev_state *state;
>  	int ret = 0;
>  
> -	mutex_lock(&priv->lock);
> +	if (!priv->remote)
> +		return -ENODEV;
>  
> -	if (!priv->remote) {
> -		ret = -ENODEV;
> -		goto out;
> -	}
> +	state = v4l2_subdev_lock_and_get_active_state(&priv->subdev);
>  
>  	if (enable && priv->stream_count == 0) {
> -		ret = rcsi2_start(priv);
> +		ret = rcsi2_start(priv, state);
>  		if (ret)
>  			goto out;
>  	} else if (!enable && priv->stream_count == 1) {
> @@ -1165,49 +1171,26 @@ static int rcsi2_s_stream(struct v4l2_subdev *sd, int enable)
>  
>  	priv->stream_count += enable ? 1 : -1;
>  out:
> -	mutex_unlock(&priv->lock);
> +	v4l2_subdev_unlock_state(state);
>  
>  	return ret;
>  }
>  
>  static int rcsi2_set_pad_format(struct v4l2_subdev *sd,
> -				struct v4l2_subdev_state *sd_state,
> +				struct v4l2_subdev_state *state,
>  				struct v4l2_subdev_format *format)
>  {
> -	struct rcar_csi2 *priv = sd_to_csi2(sd);
> -	struct v4l2_mbus_framefmt *framefmt;
> -
> -	mutex_lock(&priv->lock);
> +	if (format->pad > RCAR_CSI2_SINK)
> +		return v4l2_subdev_get_fmt(sd, state, format);
>  
>  	if (!rcsi2_code_to_fmt(format->format.code))
>  		format->format.code = rcar_csi2_formats[0].code;
>  
> -	if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
> -		priv->mf = format->format;
> -	} else {
> -		framefmt = v4l2_subdev_state_get_format(sd_state, 0);
> -		*framefmt = format->format;
> -	}
> -
> -	mutex_unlock(&priv->lock);
> -
> -	return 0;
> -}
> -
> -static int rcsi2_get_pad_format(struct v4l2_subdev *sd,
> -				struct v4l2_subdev_state *sd_state,
> -				struct v4l2_subdev_format *format)
> -{
> -	struct rcar_csi2 *priv = sd_to_csi2(sd);
> -
> -	mutex_lock(&priv->lock);
> -
> -	if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
> -		format->format = priv->mf;
> -	else
> -		format->format = *v4l2_subdev_state_get_format(sd_state, 0);
> +	*v4l2_subdev_state_get_format(state, format->pad) = format->format;
>  
> -	mutex_unlock(&priv->lock);
> +	/* Propagate the format to the source pads. */
> +	for (unsigned int i = RCAR_CSI2_SOURCE_VC0; i < NR_OF_RCAR_CSI2_PAD; i++)
> +		*v4l2_subdev_state_get_format(state, i) = format->format;
>  
>  	return 0;
>  }
> @@ -1218,7 +1201,7 @@ static const struct v4l2_subdev_video_ops rcar_csi2_video_ops = {
>  
>  static const struct v4l2_subdev_pad_ops rcar_csi2_pad_ops = {
>  	.set_fmt = rcsi2_set_pad_format,
> -	.get_fmt = rcsi2_get_pad_format,
> +	.get_fmt = v4l2_subdev_get_fmt,
>  };
>  
>  static const struct v4l2_subdev_ops rcar_csi2_subdev_ops = {
> @@ -1226,6 +1209,30 @@ static const struct v4l2_subdev_ops rcar_csi2_subdev_ops = {
>  	.pad	= &rcar_csi2_pad_ops,
>  };
>  
> +static int rcsi2_init_state(struct v4l2_subdev *sd,
> +			    struct v4l2_subdev_state *state)
> +{
> +	static const struct v4l2_mbus_framefmt rcar_csi2_default_fmt = {
> +		.width		= 1920,
> +		.height		= 1080,
> +		.code		= MEDIA_BUS_FMT_RGB888_1X24,
> +		.colorspace	= V4L2_COLORSPACE_SRGB,
> +		.field		= V4L2_FIELD_NONE,
> +		.ycbcr_enc	= V4L2_YCBCR_ENC_DEFAULT,
> +		.quantization	= V4L2_QUANTIZATION_DEFAULT,
> +		.xfer_func	= V4L2_XFER_FUNC_DEFAULT,
> +	};
> +
> +	for (unsigned int i = RCAR_CSI2_SINK; i < NR_OF_RCAR_CSI2_PAD; i++)

I would write 'i = 0'.

Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

> +		*v4l2_subdev_state_get_format(state, i) = rcar_csi2_default_fmt;
> +
> +	return 0;
> +}
> +
> +static const struct v4l2_subdev_internal_ops rcar_csi2_internal_ops = {
> +	.init_state = rcsi2_init_state,
> +};
> +
>  static irqreturn_t rcsi2_irq(int irq, void *data)
>  {
>  	struct rcar_csi2 *priv = data;
> @@ -1251,14 +1258,17 @@ static irqreturn_t rcsi2_irq(int irq, void *data)
>  
>  static irqreturn_t rcsi2_irq_thread(int irq, void *data)
>  {
> +	struct v4l2_subdev_state *state;
>  	struct rcar_csi2 *priv = data;
>  
> -	mutex_lock(&priv->lock);
> +	state = v4l2_subdev_lock_and_get_active_state(&priv->subdev);
> +
>  	rcsi2_stop(priv);
>  	usleep_range(1000, 2000);
> -	if (rcsi2_start(priv))
> +	if (rcsi2_start(priv, state))
>  		dev_warn(priv->dev, "Failed to restart CSI-2 receiver\n");
> -	mutex_unlock(&priv->lock);
> +
> +	v4l2_subdev_unlock_state(state);
>  
>  	return IRQ_HANDLED;
>  }
> @@ -1870,23 +1880,23 @@ static int rcsi2_probe(struct platform_device *pdev)
>  
>  	priv->dev = &pdev->dev;
>  
> -	mutex_init(&priv->lock);
>  	priv->stream_count = 0;
>  
>  	ret = rcsi2_probe_resources(priv, pdev);
>  	if (ret) {
>  		dev_err(priv->dev, "Failed to get resources\n");
> -		goto error_mutex;
> +		return ret;
>  	}
>  
>  	platform_set_drvdata(pdev, priv);
>  
>  	ret = rcsi2_parse_dt(priv);
>  	if (ret)
> -		goto error_mutex;
> +		return ret;
>  
>  	priv->subdev.owner = THIS_MODULE;
>  	priv->subdev.dev = &pdev->dev;
> +	priv->subdev.internal_ops = &rcar_csi2_internal_ops;
>  	v4l2_subdev_init(&priv->subdev, &rcar_csi2_subdev_ops);
>  	v4l2_set_subdevdata(&priv->subdev, &pdev->dev);
>  	snprintf(priv->subdev.name, sizeof(priv->subdev.name), "%s %s",
> @@ -1912,21 +1922,25 @@ static int rcsi2_probe(struct platform_device *pdev)
>  
>  	pm_runtime_enable(&pdev->dev);
>  
> +	ret = v4l2_subdev_init_finalize(&priv->subdev);
> +	if (ret)
> +		goto error_pm_runtime;
> +
>  	ret = v4l2_async_register_subdev(&priv->subdev);
>  	if (ret < 0)
> -		goto error_pm_runtime;
> +		goto error_subdev;
>  
>  	dev_info(priv->dev, "%d lanes found\n", priv->lanes);
>  
>  	return 0;
>  
> +error_subdev:
> +	v4l2_subdev_cleanup(&priv->subdev);
>  error_pm_runtime:
>  	pm_runtime_disable(&pdev->dev);
>  error_async:
>  	v4l2_async_nf_unregister(&priv->notifier);
>  	v4l2_async_nf_cleanup(&priv->notifier);
> -error_mutex:
> -	mutex_destroy(&priv->lock);
>  
>  	return ret;
>  }
> @@ -1941,8 +1955,6 @@ static void rcsi2_remove(struct platform_device *pdev)
>  	v4l2_subdev_cleanup(&priv->subdev);
>  
>  	pm_runtime_disable(&pdev->dev);
> -
> -	mutex_destroy(&priv->lock);
>  }
>  
>  static struct platform_driver rcar_csi2_pdrv = {

Jacopo Mondi May 6, 2024, 7:25 a.m. UTC | #4

Hi Niklas


On Fri, May 03, 2024 at 08:03:21PM GMT, Niklas Söderlund wrote:
> Hi Jacopo,
>
> Thanks for your work.
>
> On 2024-05-03 17:51:19 +0200, Jacopo Mondi wrote:
> > Create the subdevice state with v4l2_subdev_init_finalize() and
> > implement the init_state() operation to guarantee the state is initialized.
>
> This fails and produces -EPIPE error when trying to capture on R-Car M3N
> using ADV748x. If I only apply patch 1, 2, 3 of this series it works as
> expected, when I apply this as well capture breaks.
>
> You can test this on a remote Gen3 board without any HDMI or CVBS
> source, just enable a test patterns on the HDMI and AFE sources, see [1]
> for my test-case output which demonstrates how I produce the failure.
>
> Oddly enough if I use the old vin-test package I can capture from HDMI
> while CVBS capture still fails with -EPIPE. Not sure what's going on.
>
> 1. Ignore the "Unable to get format: Inappropriate ioctl for device
>    (25)." from the "yavta --set-control ..." commands, they are
>    unimportant and not new. Focus in the "Unable to start streaming:
>    Broken pipe (32)." errors from "yavta -c10 --file=..  /dev/videoX"
>    calls, they are not new ;-)
>
> ===> star <===
> Last login: Fri May  3 17:48:06 2024
>
> Renesas Salvator-X 2nd version board based on r8a77965
> 0;root@arm64:~
> arm64 ~ # echo wkbfirytku $$; rm -fr /tmp/vin-capture; echo ygxezpiinz $?
> echo wkbfirytku $$; rm -fr /tmp/vin-capture; echo ygxezpiinz $?

What are these random strings in test logs ? (out of curiosity)

>
> wkbfirytku 403
> ygxezpiinz 0
> echo agyxksooma $$; mkdir -p /tmp/vin-capture; echo kvwostutox $?
> 0;root@arm64:~
> arm64 ~ # echo agyxksooma $$; mkdir -p /tmp/vin-capture; echo kvwostutox $?
>
> agyxksooma 403
> kvwostutox 0
> echo vtmzcdhjtc $$; grep -l 'adv748x 4-0070 afe' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo mwqkcmnuju $?
> 0;root@arm64:~
> arm64 ~ # echo vtmzcdhjtc $$; grep -l 'adv748x 4-0070 afe' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo mwqkcmnuju $?
>
> vtmzcdhjtc 403
> /dev/v4l-subdev1
> mwqkcmnuju 0
> echo yavkazxvyn $$; grep -l 'VIN0 output' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo wpijcgewrd $?
> 0;root@arm64:~
> arm64 ~ # echo yavkazxvyn $$; grep -l 'VIN0 output' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo wpijcgewrd $?
>
> yavkazxvyn 403
> /dev/video0
> wpijcgewrd 0
> echo nkitspntrm $$; for mdev in /dev/media*; do if [[ '$(media-ctl -d $mdev -p | grep 'rcar_vin')' != '' ]]; then echo $mdev; break; fi; done; echo ngoqmbhfqr $?
> 0;root@arm64:~
> arm64 ~ # echo nkitspntrm $$; for mdev in /dev/media*; do if [[ '$(media-ctl -d $mdev -p | grep 'rcar_vin')' != '' ]]; then echo $mdev; break; fi; done; echo ngoqmbhfqr $?
>
> nkitspntrm 403
> /dev/media0
> ngoqmbhfqr 0
> echo ggokwokuyh $$; media-ctl -d /dev/media0 -r; echo yydmasvhba $?
> 0;root@arm64:~
> arm64 ~ # echo ggokwokuyh $$; media-ctl -d /dev/media0 -r; echo yydmasvhba $?
>
> ggokwokuyh 403
> yydmasvhba 0
> 0;root@arm64:~
> echo ftqgotsvwt $$; media-ctl -d /dev/media0 -l "'adv748x 4-0070 afe':8 -> 'adv748x 4-0070 txb':0 [1]"; echo ohfyvhjfrt $?
> arm64 ~ # echo ftqgotsvwt $$; media-ctl -d /dev/media0 -l "'adv748x 4-0070 afe':8 -> 'adv748x 4-0070 txb':0 [1]"; echo ohfyvhjfrt $?
>
> ftqgotsvwt 403
> ohfyvhjfrt 0
> 0;root@arm64:~
> echo nhtnyteajn $$; media-ctl -d /dev/media0 -l "'rcar_csi2 fea80000.csi2':1 -> 'VIN0 output':0 [1]"; echo vovincdzqi $?
> arm64 ~ # echo nhtnyteajn $$; media-ctl -d /dev/media0 -l "'rcar_csi2 fea80000.csi2':1 -> 'VIN0 output':0 [1]"; echo vovincdzqi $?
>
> nhtnyteajn 403
> vovincdzqi 0
> 0;root@arm64:~
> echo rulkcoorky $$; media-ctl -d /dev/media0 --get-v4l2 "'adv748x 4-0070 afe':8"; echo esoiygqdfq $?
> arm64 ~ # echo rulkcoorky $$; media-ctl -d /dev/media0 --get-v4l2 "'adv748x 4-0070 afe':8"; echo esoiygqdfq $?
>
> rulkcoorky 403
> 		[stream:0 fmt:UYVY8_2X8/720x240 field:alternate colorspace:smpte170m]
> esoiygqdfq 0
> 0;root@arm64:~
> echo dmdgcctvqh $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 afe':8 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo ighfsicfux $?
> arm64 ~ # echo dmdgcctvqh $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 afe':8 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo ighfsicfux $?
>
> dmdgcctvqh 403
> ighfsicfux 0
> 0;root@arm64:~
> echo mqlvxrvync $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 txb':0 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo elpiosmlzj $?
> arm64 ~ # echo mqlvxrvync $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 txb':0 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo elpiosmlzj $?
>
> mqlvxrvync 403
> elpiosmlzj 0
> 0;root@arm64:~
> echo aoldaiatak $$; media-ctl -d /dev/media0 -V "'rcar_csi2 fea80000.csi2':1 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo iymsospuex $?
> arm64 ~ # echo aoldaiatak $$; media-ctl -d /dev/media0 -V "'rcar_csi2 fea80000.csi2':1 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo iymsospuex $?

Please read the cover letter

-------------------------------------------------------------------------------
- R-Car CSI-2

There's a user-visible change here, as in the past it was possible to set
format on all pads, and the vin-test scripts do that. In this version I decided
to make the format configurable on the sink and propagate to sources. I'm not
sure if this can be considered a user visible change and we need to maintain
backward compatibility
-------------------------------------------------------------------------------

You should set format on pad #0

How do you feel about that ?


>
> aoldaiatak 403
> iymsospuex 0
> 0;root@arm64:~
> echo nxpbvfvtbv $$; yavta -f RGB565 -s 720x480 --field interlaced /dev/video0; echo dppdatfote $?
> arm64 ~ # echo nxpbvfvtbv $$; yavta -f RGB565 -s 720x480 --field interlaced /dev/video0; echo dppdatfote $?
>
> nxpbvfvtbv 403
> Device /dev/video0 opened.
> Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
> Video format set: RGB565 (50424752) 720x480 (stride 1440) field interlaced buffer size 691200
> Video format: RGB565 (50424752) 720x480 (stride 1440) field interlaced buffer size 691200
> dppdatfote 0
> echo zsqtrrojrr $$; yavta --set-control '0x009f0903 1' /dev/v4l-subdev1; echo xkrxhzzdcq $?
> 0;root@arm64:~
> arm64 ~ # echo zsqtrrojrr $$; yavta --set-control '0x009f0903 1' /dev/v4l-subdev1; echo xkrxhzzdcq $?
>
> zsqtrrojrr 403
> Device /dev/v4l-subdev1 opened.
> Control 0x009f0903 set to 1, is 1
> Unable to get format: Inappropriate ioctl for device (25).
> xkrxhzzdcq 0
> echo jifvldisax $$; yavta -c10 --file=/tmp/vin-capture/cvbs-solid-#.bin /dev/video0; echo tmzmlnjlsq $?
> 0;root@arm64:~
> arm64 ~ # echo jifvldisax $$; yavta -c10 --file=/tmp/vin-capture/cvbs-solid-#.bin /dev/video0; echo tmzmlnjlsq $?
>
> jifvldisax 403
> Device /dev/video0 opened.
> Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
> Video format: RGB565 (50424752) 720x480 (stride 1440) field interlaced buffer size 691200
> 8 buffers requested.
> length: 691200 offset: 0 timestamp type/source: mono/EoF
> Buffer 0/0 mapped at address 0xffffb1037000.
> length: 691200 offset: 32768 timestamp type/source: mono/EoF
> Buffer 1/0 mapped at address 0xffffb0f8e000.
> length: 691200 offset: 65536 timestamp type/source: mono/EoF
> Buffer 2/0 mapped at address 0xffffb0ee5000.
> length: 691200 offset: 98304 timestamp type/source: mono/EoF
> Buffer 3/0 mapped at address 0xffffb0e3c000.
> length: 691200 offset: 131072 timestamp type/source: mono/EoF
> Buffer 4/0 mapped at address 0xffffb0d93000.
> length: 691200 offset: 163840 timestamp type/source: mono/EoF
> Buffer 5/0 mapped at address 0xffffb0cea000.
> length: 691200 offset: 196608 timestamp type/source: mono/EoF
> Buffer 6/0 mapped at address 0xffffb0c41000.
> length: 691200 offset: 229376 timestamp type/source: mono/EoF
> Buffer 7/0 mapped at address 0xffffb0b98000.
> Unable to start streaming: Broken pipe (32).
> 8 buffers released.
> tmzmlnjlsq 0
> echo wojwgdpxnx $$; yavta --set-control '0x009f0903 2' /dev/v4l-subdev1; echo dghaavszch $?
> 0;root@arm64:~
> arm64 ~ # echo wojwgdpxnx $$; yavta --set-control '0x009f0903 2' /dev/v4l-subdev1; echo dghaavszch $?
>
> wojwgdpxnx 403
> Device /dev/v4l-subdev1 opened.
> Control 0x009f0903 set to 2, is 2
> Unable to get format: Inappropriate ioctl for device (25).
> dghaavszch 0
> 0;root@arm64:~
> echo tldblgblou $$; yavta -c10 --file=/tmp/vin-capture/cvbs-colorbars-#.bin /dev/video0; echo pofbqvttib $?
> arm64 ~ # echo tldblgblou $$; yavta -c10 --file=/tmp/vin-capture/cvbs-colorbars-#.bin /dev/video0; echo pofbqvttib $?
>
> tldblgblou 403
> Device /dev/video0 opened.
> Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
> Video format: RGB565 (50424752) 720x480 (stride 1440) field interlaced buffer size 691200
> 8 buffers requested.
> length: 691200 offset: 0 timestamp type/source: mono/EoF
> Buffer 0/0 mapped at address 0xffffb75f7000.
> length: 691200 offset: 32768 timestamp type/source: mono/EoF
> Buffer 1/0 mapped at address 0xffffb754e000.
> length: 691200 offset: 65536 timestamp type/source: mono/EoF
> Buffer 2/0 mapped at address 0xffffb74a5000.
> length: 691200 offset: 98304 timestamp type/source: mono/EoF
> Buffer 3/0 mapped at address 0xffffb73fc000.
> length: 691200 offset: 131072 timestamp type/source: mono/EoF
> Buffer 4/0 mapped at address 0xffffb7353000.
> length: 691200 offset: 163840 timestamp type/source: mono/EoF
> Buffer 5/0 mapped at address 0xffffb72aa000.
> length: 691200 offset: 196608 timestamp type/source: mono/EoF
> Buffer 6/0 mapped at address 0xffffb7201000.
> length: 691200 offset: 229376 timestamp type/source: mono/EoF
> Buffer 7/0 mapped at address 0xffffb7158000.
> Unable to start streaming: Broken pipe (32).
> 8 buffers released.
> pofbqvttib 0
> 0;root@arm64:~
> echo maubyyzesr $$; yavta --set-control '0x009f0903 0' /dev/v4l-subdev1; echo dzbvegabvy $?
> arm64 ~ # echo maubyyzesr $$; yavta --set-control '0x009f0903 0' /dev/v4l-subdev1; echo dzbvegabvy $?
>
> maubyyzesr 403
> Device /dev/v4l-subdev1 opened.
> Control 0x009f0903 set to 0, is 0
> Unable to get format: Inappropriate ioctl for device (25).
> dzbvegabvy 0
> 0;root@arm64:~
> echo pffcsadwlt $$; test -e /tmp/vin-capture/cvbs-solid-000007.bin; echo xilwxnvrrd $?
> arm64 ~ # echo pffcsadwlt $$; test -e /tmp/vin-capture/cvbs-solid-000007.bin; echo xilwxnvrrd $?
>
> pffcsadwlt 403
> xilwxnvrrd 1
> echo grglvpwocj $$; grep -l 'adv748x 4-0070 hdmi' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo hvcawnkqdt $?
> 0;root@arm64:~
> arm64 ~ # echo grglvpwocj $$; grep -l 'adv748x 4-0070 hdmi' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo hvcawnkqdt $?
>
> grglvpwocj 403
> /dev/v4l-subdev4
> hvcawnkqdt 0
> echo nnpccbuzak $$; media-ctl -d /dev/media0 -r; echo zigvuehatt $?
> 0;root@arm64:~
> arm64 ~ # echo nnpccbuzak $$; media-ctl -d /dev/media0 -r; echo zigvuehatt $?
>
> nnpccbuzak 403
> zigvuehatt 0
> echo xyngygxuyr $$; media-ctl -d /dev/media0 -l "'adv748x 4-0070 hdmi':1 -> 'adv748x 4-0070 txa':0 [1]"; echo oknofsbyvn $?
> 0;root@arm64:~
> arm64 ~ # echo xyngygxuyr $$; media-ctl -d /dev/media0 -l "'adv748x 4-0070 hdmi':1 -> 'adv748x 4-0070 txa':0 [1]"; echo oknofsbyvn $?
>
> xyngygxuyr 403
> oknofsbyvn 0
> 0;root@arm64:~
> echo jkzuanypyp $$; media-ctl -d /dev/media0 -l "'rcar_csi2 feaa0000.csi2':1 -> 'VIN0 output':0 [1]"; echo onsaxggllz $?
> arm64 ~ # echo jkzuanypyp $$; media-ctl -d /dev/media0 -l "'rcar_csi2 feaa0000.csi2':1 -> 'VIN0 output':0 [1]"; echo onsaxggllz $?
>
> jkzuanypyp 403
> onsaxggllz 0
> 0;root@arm64:~
> echo lttzkqwwoa $$; media-ctl -d /dev/media0 --get-v4l2 "'adv748x 4-0070 hdmi':1"; echo imxtuqbxgf $?
> arm64 ~ # echo lttzkqwwoa $$; media-ctl -d /dev/media0 --get-v4l2 "'adv748x 4-0070 hdmi':1"; echo imxtuqbxgf $?
>
> lttzkqwwoa 403
> 		[stream:0 fmt:RGB888_1X24/1280x720 field:none colorspace:srgb]
> imxtuqbxgf 0
> 0;root@arm64:~
> echo degzwngmzk $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 hdmi':1 [fmt:RGB888_1X24/1280x720 field:none]"; echo vgqpdhbhjt $?
> arm64 ~ # echo degzwngmzk $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 hdmi':1 [fmt:RGB888_1X24/1280x720 field:none]"; echo vgqpdhbhjt $?
>
> degzwngmzk 403
> vgqpdhbhjt 0
> 0;root@arm64:~
> echo iwtingcfbz $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 txa':0 [fmt:RGB888_1X24/1280x720 field:none]"; echo qircbjupbq $?
> arm64 ~ # echo iwtingcfbz $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 txa':0 [fmt:RGB888_1X24/1280x720 field:none]"; echo qircbjupbq $?
>
> iwtingcfbz 403
> qircbjupbq 0
> 0;root@arm64:~
> echo twrjqisqff $$; media-ctl -d /dev/media0 -V "'rcar_csi2 feaa0000.csi2':1 [fmt:RGB888_1X24/1280x720 field:none]"; echo ocaivovrxk $?
> arm64 ~ # echo twrjqisqff $$; media-ctl -d /dev/media0 -V "'rcar_csi2 feaa0000.csi2':1 [fmt:RGB888_1X24/1280x720 field:none]"; echo ocaivovrxk $?
>
> twrjqisqff 403
> ocaivovrxk 0
> echo ajqwydmzik $$; yavta -f RGB565 -s 1280x720 --field none /dev/video0; echo fayawxvllj $?
> 0;root@arm64:~
> arm64 ~ # echo ajqwydmzik $$; yavta -f RGB565 -s 1280x720 --field none /dev/video0; echo fayawxvllj $?
>
> ajqwydmzik 403
> Device /dev/video0 opened.
> Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
> Video format set: RGB565 (50424752) 1280x720 (stride 2560) field none buffer size 1843200
> Video format: RGB565 (50424752) 1280x720 (stride 2560) field none buffer size 1843200
> fayawxvllj 0
> echo pealtxybun $$; yavta --set-control '0x009f0903 1' /dev/v4l-subdev4; echo juhrczaeao $?
> 0;root@arm64:~
> arm64 ~ # echo pealtxybun $$; yavta --set-control '0x009f0903 1' /dev/v4l-subdev4; echo juhrczaeao $?
>
> pealtxybun 403
> Device /dev/v4l-subdev4 opened.
> Control 0x009f0903 set to 1, is 1
> Unable to get format: Inappropriate ioctl for device (25).
> juhrczaeao 0
> 0;root@arm64:~
> echo oaxoraqdid $$; yavta -c10 --file=/tmp/vin-capture/hdmi-solid-#.bin /dev/video0; echo bfsxvmqitj $?
> arm64 ~ # echo oaxoraqdid $$; yavta -c10 --file=/tmp/vin-capture/hdmi-solid-#.bin /dev/video0; echo bfsxvmqitj $?
>
> oaxoraqdid 403
> Device /dev/video0 opened.
> Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
> Video format: RGB565 (50424752) 1280x720 (stride 2560) field none buffer size 1843200
> 8 buffers requested.
> length: 1843200 offset: 0 timestamp type/source: mono/EoF
> Buffer 0/0 mapped at address 0xffffafa8e000.
> length: 1843200 offset: 32768 timestamp type/source: mono/EoF
> Buffer 1/0 mapped at address 0xffffaf8cc000.
> length: 1843200 offset: 65536 timestamp type/source: mono/EoF
> Buffer 2/0 mapped at address 0xffffaf70a000.
> length: 1843200 offset: 98304 timestamp type/source: mono/EoF
> Buffer 3/0 mapped at address 0xffffaf548000.
> length: 1843200 offset: 131072 timestamp type/source: mono/EoF
> Buffer 4/0 mapped at address 0xffffaf386000.
> length: 1843200 offset: 163840 timestamp type/source: mono/EoF
> Buffer 5/0 mapped at address 0xffffaf1c4000.
> length: 1843200 offset: 196608 timestamp type/source: mono/EoF
> Buffer 6/0 mapped at address 0xffffaf002000.
> length: 1843200 offset: 229376 timestamp type/source: mono/EoF
> Buffer 7/0 mapped at address 0xffffaee40000.
> Unable to start streaming: Broken pipe (32).
> 8 buffers released.
> bfsxvmqitj 0
> echo pmbwbnrkkw $$; yavta --set-control '0x009f0903 2' /dev/v4l-subdev4; echo ucgivtjwvw $?
> 0;root@arm64:~
> arm64 ~ # echo pmbwbnrkkw $$; yavta --set-control '0x009f0903 2' /dev/v4l-subdev4; echo ucgivtjwvw $?
>
> pmbwbnrkkw 403
> Device /dev/v4l-subdev4 opened.
> Control 0x009f0903 set to 2, is 2
> Unable to get format: Inappropriate ioctl for device (25).
> ucgivtjwvw 0
> 0;root@arm64:~
> echo rvkbtaiuan $$; yavta -c10 --file=/tmp/vin-capture/hdmi-colorbars-#.bin /dev/video0; echo fdlcrvrylc $?
> arm64 ~ # echo rvkbtaiuan $$; yavta -c10 --file=/tmp/vin-capture/hdmi-colorbars-#.bin /dev/video0; echo fdlcrvrylc $?
>
> rvkbtaiuan 403
> Device /dev/video0 opened.
> Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
> Video format: RGB565 (50424752) 1280x720 (stride 2560) field none buffer size 1843200
> 8 buffers requested.
> length: 1843200 offset: 0 timestamp type/source: mono/EoF
> Buffer 0/0 mapped at address 0xffff86f8e000.
> length: 1843200 offset: 32768 timestamp type/source: mono/EoF
> Buffer 1/0 mapped at address 0xffff86dcc000.
> length: 1843200 offset: 65536 timestamp type/source: mono/EoF
> Buffer 2/0 mapped at address 0xffff86c0a000.
> length: 1843200 offset: 98304 timestamp type/source: mono/EoF
> Buffer 3/0 mapped at address 0xffff86a48000.
> length: 1843200 offset: 131072 timestamp type/source: mono/EoF
> Buffer 4/0 mapped at address 0xffff86886000.
> length: 1843200 offset: 163840 timestamp type/source: mono/EoF
> Buffer 5/0 mapped at address 0xffff866c4000.
> length: 1843200 offset: 196608 timestamp type/source: mono/EoF
> Buffer 6/0 mapped at address 0xffff86502000.
> length: 1843200 offset: 229376 timestamp type/source: mono/EoF
> Buffer 7/0 mapped at address 0xffff86340000.
> Unable to start streaming: Broken pipe (32).
> 8 buffers released.
> fdlcrvrylc 0
> 0;root@arm64:~
> echo hrgnrsupul $$; yavta --set-control '0x009f0903 0' /dev/v4l-subdev4; echo bvgysmcxve $?
> arm64 ~ # echo hrgnrsupul $$; yavta --set-control '0x009f0903 0' /dev/v4l-subdev4; echo bvgysmcxve $?
>
> hrgnrsupul 403
> Device /dev/v4l-subdev4 opened.
> Control 0x009f0903 set to 0, is 0
> Unable to get format: Inappropriate ioctl for device (25).
> bvgysmcxve 0
> echo znlqovrrra $$; test -e /tmp/vin-capture/hdmi-solid-000007.bin; echo sjpcuiptaf $?
> 0;root@arm64:~
> arm64 ~ # echo znlqovrrra $$; test -e /tmp/vin-capture/hdmi-solid-000007.bin; echo sjpcuiptaf $?
>
> znlqovrrra 403
> sjpcuiptaf 1
> exit
> ===> end <===
>
> >
> > Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
> > ---
> >  drivers/media/platform/renesas/rcar-csi2.c | 138 +++++++++++----------
> >  1 file changed, 75 insertions(+), 63 deletions(-)
> >
> > diff --git a/drivers/media/platform/renesas/rcar-csi2.c b/drivers/media/platform/renesas/rcar-csi2.c
> > index 2d464e43a5be..4d4dfb59b025 100644
> > --- a/drivers/media/platform/renesas/rcar-csi2.c
> > +++ b/drivers/media/platform/renesas/rcar-csi2.c
> > @@ -587,7 +587,8 @@ enum rcar_csi2_pads {
> >  struct rcar_csi2_info {
> >  	int (*init_phtw)(struct rcar_csi2 *priv, unsigned int mbps);
> >  	int (*phy_post_init)(struct rcar_csi2 *priv);
> > -	int (*start_receiver)(struct rcar_csi2 *priv);
> > +	int (*start_receiver)(struct rcar_csi2 *priv,
> > +			      struct v4l2_subdev_state *state);
> >  	void (*enter_standby)(struct rcar_csi2 *priv);
> >  	const struct rcsi2_mbps_reg *hsfreqrange;
> >  	unsigned int csi0clkfreqrange;
> > @@ -613,8 +614,6 @@ struct rcar_csi2 {
> >
> >  	int channel_vc[4];
> >
> > -	struct mutex lock; /* Protects mf and stream_count. */
> > -	struct v4l2_mbus_framefmt mf;
> >  	int stream_count;
> >
> >  	bool cphy;
> > @@ -808,20 +807,25 @@ static int rcsi2_get_active_lanes(struct rcar_csi2 *priv,
> >  	return 0;
> >  }
> >
> > -static int rcsi2_start_receiver_gen3(struct rcar_csi2 *priv)
> > +static int rcsi2_start_receiver_gen3(struct rcar_csi2 *priv,
> > +				     struct v4l2_subdev_state *state)
> >  {
> >  	const struct rcar_csi2_format *format;
> >  	u32 phycnt, vcdt = 0, vcdt2 = 0, fld = 0;
> > +	struct v4l2_mbus_framefmt *fmt;
> >  	unsigned int lanes;
> >  	unsigned int i;
> >  	int mbps, ret;
> >
> > +	/* Use the format on the sink pad to compute the receiver config. */
> > +	fmt = v4l2_subdev_state_get_format(state, RCAR_CSI2_SINK);
> > +
> >  	dev_dbg(priv->dev, "Input size (%ux%u%c)\n",
> > -		priv->mf.width, priv->mf.height,
> > -		priv->mf.field == V4L2_FIELD_NONE ? 'p' : 'i');
> > +		fmt->width, fmt->height,
> > +		fmt->field == V4L2_FIELD_NONE ? 'p' : 'i');
> >
> >  	/* Code is validated in set_fmt. */
> > -	format = rcsi2_code_to_fmt(priv->mf.code);
> > +	format = rcsi2_code_to_fmt(fmt->code);
> >  	if (!format)
> >  		return -EINVAL;
> >
> > @@ -849,11 +853,11 @@ static int rcsi2_start_receiver_gen3(struct rcar_csi2 *priv)
> >  			vcdt2 |= vcdt_part << ((i % 2) * 16);
> >  	}
> >
> > -	if (priv->mf.field == V4L2_FIELD_ALTERNATE) {
> > +	if (fmt->field == V4L2_FIELD_ALTERNATE) {
> >  		fld = FLD_DET_SEL(1) | FLD_FLD_EN4 | FLD_FLD_EN3 | FLD_FLD_EN2
> >  			| FLD_FLD_EN;
> >
> > -		if (priv->mf.height == 240)
> > +		if (fmt->height == 240)
> >  			fld |= FLD_FLD_NUM(0);
> >  		else
> >  			fld |= FLD_FLD_NUM(1);
> > @@ -1049,15 +1053,18 @@ static int rcsi2_c_phy_setting_v4h(struct rcar_csi2 *priv, int msps)
> >  	return 0;
> >  }
> >
> > -static int rcsi2_start_receiver_v4h(struct rcar_csi2 *priv)
> > +static int rcsi2_start_receiver_v4h(struct rcar_csi2 *priv,
> > +				    struct v4l2_subdev_state *state)
> >  {
> >  	const struct rcar_csi2_format *format;
> > +	struct v4l2_mbus_framefmt *fmt;
> >  	unsigned int lanes;
> >  	int msps;
> >  	int ret;
> >
> > -	/* Calculate parameters */
> > -	format = rcsi2_code_to_fmt(priv->mf.code);
> > +	/* Use the format on the sink pad to compute the receiver config. */
> > +	fmt = v4l2_subdev_state_get_format(state, RCAR_CSI2_SINK);
> > +	format = rcsi2_code_to_fmt(fmt->code);
> >  	if (!format)
> >  		return -EINVAL;
> >
> > @@ -1114,7 +1121,7 @@ static int rcsi2_start_receiver_v4h(struct rcar_csi2 *priv)
> >  	return 0;
> >  }
> >
> > -static int rcsi2_start(struct rcar_csi2 *priv)
> > +static int rcsi2_start(struct rcar_csi2 *priv, struct v4l2_subdev_state *state)
> >  {
> >  	int ret;
> >
> > @@ -1122,7 +1129,7 @@ static int rcsi2_start(struct rcar_csi2 *priv)
> >  	if (ret < 0)
> >  		return ret;
> >
> > -	ret = priv->info->start_receiver(priv);
> > +	ret = priv->info->start_receiver(priv, state);
> >  	if (ret) {
> >  		rcsi2_enter_standby(priv);
> >  		return ret;
> > @@ -1146,17 +1153,16 @@ static void rcsi2_stop(struct rcar_csi2 *priv)
> >  static int rcsi2_s_stream(struct v4l2_subdev *sd, int enable)
> >  {
> >  	struct rcar_csi2 *priv = sd_to_csi2(sd);
> > +	struct v4l2_subdev_state *state;
> >  	int ret = 0;
> >
> > -	mutex_lock(&priv->lock);
> > +	if (!priv->remote)
> > +		return -ENODEV;
> >
> > -	if (!priv->remote) {
> > -		ret = -ENODEV;
> > -		goto out;
> > -	}
> > +	state = v4l2_subdev_lock_and_get_active_state(&priv->subdev);
> >
> >  	if (enable && priv->stream_count == 0) {
> > -		ret = rcsi2_start(priv);
> > +		ret = rcsi2_start(priv, state);
> >  		if (ret)
> >  			goto out;
> >  	} else if (!enable && priv->stream_count == 1) {
> > @@ -1165,49 +1171,26 @@ static int rcsi2_s_stream(struct v4l2_subdev *sd, int enable)
> >
> >  	priv->stream_count += enable ? 1 : -1;
> >  out:
> > -	mutex_unlock(&priv->lock);
> > +	v4l2_subdev_unlock_state(state);
> >
> >  	return ret;
> >  }
> >
> >  static int rcsi2_set_pad_format(struct v4l2_subdev *sd,
> > -				struct v4l2_subdev_state *sd_state,
> > +				struct v4l2_subdev_state *state,
> >  				struct v4l2_subdev_format *format)
> >  {
> > -	struct rcar_csi2 *priv = sd_to_csi2(sd);
> > -	struct v4l2_mbus_framefmt *framefmt;
> > -
> > -	mutex_lock(&priv->lock);
> > +	if (format->pad > RCAR_CSI2_SINK)
> > +		return v4l2_subdev_get_fmt(sd, state, format);
> >
> >  	if (!rcsi2_code_to_fmt(format->format.code))
> >  		format->format.code = rcar_csi2_formats[0].code;
> >
> > -	if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
> > -		priv->mf = format->format;
> > -	} else {
> > -		framefmt = v4l2_subdev_state_get_format(sd_state, 0);
> > -		*framefmt = format->format;
> > -	}
> > -
> > -	mutex_unlock(&priv->lock);
> > -
> > -	return 0;
> > -}
> > -
> > -static int rcsi2_get_pad_format(struct v4l2_subdev *sd,
> > -				struct v4l2_subdev_state *sd_state,
> > -				struct v4l2_subdev_format *format)
> > -{
> > -	struct rcar_csi2 *priv = sd_to_csi2(sd);
> > -
> > -	mutex_lock(&priv->lock);
> > -
> > -	if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
> > -		format->format = priv->mf;
> > -	else
> > -		format->format = *v4l2_subdev_state_get_format(sd_state, 0);
> > +	*v4l2_subdev_state_get_format(state, format->pad) = format->format;
> >
> > -	mutex_unlock(&priv->lock);
> > +	/* Propagate the format to the source pads. */
> > +	for (unsigned int i = RCAR_CSI2_SOURCE_VC0; i < NR_OF_RCAR_CSI2_PAD; i++)
> > +		*v4l2_subdev_state_get_format(state, i) = format->format;
> >
> >  	return 0;
> >  }
> > @@ -1218,7 +1201,7 @@ static const struct v4l2_subdev_video_ops rcar_csi2_video_ops = {
> >
> >  static const struct v4l2_subdev_pad_ops rcar_csi2_pad_ops = {
> >  	.set_fmt = rcsi2_set_pad_format,
> > -	.get_fmt = rcsi2_get_pad_format,
> > +	.get_fmt = v4l2_subdev_get_fmt,
> >  };
> >
> >  static const struct v4l2_subdev_ops rcar_csi2_subdev_ops = {
> > @@ -1226,6 +1209,30 @@ static const struct v4l2_subdev_ops rcar_csi2_subdev_ops = {
> >  	.pad	= &rcar_csi2_pad_ops,
> >  };
> >
> > +static int rcsi2_init_state(struct v4l2_subdev *sd,
> > +			    struct v4l2_subdev_state *state)
> > +{
> > +	static const struct v4l2_mbus_framefmt rcar_csi2_default_fmt = {
> > +		.width		= 1920,
> > +		.height		= 1080,
> > +		.code		= MEDIA_BUS_FMT_RGB888_1X24,
> > +		.colorspace	= V4L2_COLORSPACE_SRGB,
> > +		.field		= V4L2_FIELD_NONE,
> > +		.ycbcr_enc	= V4L2_YCBCR_ENC_DEFAULT,
> > +		.quantization	= V4L2_QUANTIZATION_DEFAULT,
> > +		.xfer_func	= V4L2_XFER_FUNC_DEFAULT,
> > +	};
> > +
> > +	for (unsigned int i = RCAR_CSI2_SINK; i < NR_OF_RCAR_CSI2_PAD; i++)
> > +		*v4l2_subdev_state_get_format(state, i) = rcar_csi2_default_fmt;
> > +
> > +	return 0;
> > +}
> > +
> > +static const struct v4l2_subdev_internal_ops rcar_csi2_internal_ops = {
> > +	.init_state = rcsi2_init_state,
> > +};
> > +
> >  static irqreturn_t rcsi2_irq(int irq, void *data)
> >  {
> >  	struct rcar_csi2 *priv = data;
> > @@ -1251,14 +1258,17 @@ static irqreturn_t rcsi2_irq(int irq, void *data)
> >
> >  static irqreturn_t rcsi2_irq_thread(int irq, void *data)
> >  {
> > +	struct v4l2_subdev_state *state;
> >  	struct rcar_csi2 *priv = data;
> >
> > -	mutex_lock(&priv->lock);
> > +	state = v4l2_subdev_lock_and_get_active_state(&priv->subdev);
> > +
> >  	rcsi2_stop(priv);
> >  	usleep_range(1000, 2000);
> > -	if (rcsi2_start(priv))
> > +	if (rcsi2_start(priv, state))
> >  		dev_warn(priv->dev, "Failed to restart CSI-2 receiver\n");
> > -	mutex_unlock(&priv->lock);
> > +
> > +	v4l2_subdev_unlock_state(state);
> >
> >  	return IRQ_HANDLED;
> >  }
> > @@ -1870,23 +1880,23 @@ static int rcsi2_probe(struct platform_device *pdev)
> >
> >  	priv->dev = &pdev->dev;
> >
> > -	mutex_init(&priv->lock);
> >  	priv->stream_count = 0;
> >
> >  	ret = rcsi2_probe_resources(priv, pdev);
> >  	if (ret) {
> >  		dev_err(priv->dev, "Failed to get resources\n");
> > -		goto error_mutex;
> > +		return ret;
> >  	}
> >
> >  	platform_set_drvdata(pdev, priv);
> >
> >  	ret = rcsi2_parse_dt(priv);
> >  	if (ret)
> > -		goto error_mutex;
> > +		return ret;
> >
> >  	priv->subdev.owner = THIS_MODULE;
> >  	priv->subdev.dev = &pdev->dev;
> > +	priv->subdev.internal_ops = &rcar_csi2_internal_ops;
> >  	v4l2_subdev_init(&priv->subdev, &rcar_csi2_subdev_ops);
> >  	v4l2_set_subdevdata(&priv->subdev, &pdev->dev);
> >  	snprintf(priv->subdev.name, sizeof(priv->subdev.name), "%s %s",
> > @@ -1912,21 +1922,25 @@ static int rcsi2_probe(struct platform_device *pdev)
> >
> >  	pm_runtime_enable(&pdev->dev);
> >
> > +	ret = v4l2_subdev_init_finalize(&priv->subdev);
> > +	if (ret)
> > +		goto error_pm_runtime;
> > +
> >  	ret = v4l2_async_register_subdev(&priv->subdev);
> >  	if (ret < 0)
> > -		goto error_pm_runtime;
> > +		goto error_subdev;
> >
> >  	dev_info(priv->dev, "%d lanes found\n", priv->lanes);
> >
> >  	return 0;
> >
> > +error_subdev:
> > +	v4l2_subdev_cleanup(&priv->subdev);
> >  error_pm_runtime:
> >  	pm_runtime_disable(&pdev->dev);
> >  error_async:
> >  	v4l2_async_nf_unregister(&priv->notifier);
> >  	v4l2_async_nf_cleanup(&priv->notifier);
> > -error_mutex:
> > -	mutex_destroy(&priv->lock);
> >
> >  	return ret;
> >  }
> > @@ -1941,8 +1955,6 @@ static void rcsi2_remove(struct platform_device *pdev)
> >  	v4l2_subdev_cleanup(&priv->subdev);
> >
> >  	pm_runtime_disable(&pdev->dev);
> > -
> > -	mutex_destroy(&priv->lock);
> >  }
> >
> >  static struct platform_driver rcar_csi2_pdrv = {
> > --
> > 2.44.0
> >
>
> --
> Kind Regards,
> Niklas Söderlund

Geert Uytterhoeven May 6, 2024, 8:10 a.m. UTC | #5

Hi Jacopo,

On Mon, May 6, 2024 at 9:25 AM Jacopo Mondi
<jacopo.mondi@ideasonboard.com> wrote:
> On Fri, May 03, 2024 at 08:03:21PM GMT, Niklas Söderlund wrote:
> > Renesas Salvator-X 2nd version board based on r8a77965
> > 0;root@arm64:~
> > arm64 ~ # echo wkbfirytku $$; rm -fr /tmp/vin-capture; echo ygxezpiinz $?
> > echo wkbfirytku $$; rm -fr /tmp/vin-capture; echo ygxezpiinz $?
>
> What are these random strings in test logs ? (out of curiosity)

They are sync patterns from Niklas' automated testing framework,
to sync console output and test progress.

Gr{oetje,eeting}s,

                        Geert

Niklas Söderlund May 6, 2024, 11:18 a.m. UTC | #6

Hello,

On 2024-05-06 00:52:21 +0300, Laurent Pinchart wrote:
> On Fri, May 03, 2024 at 08:03:21PM +0200, Niklas Söderlund wrote:
> > Hi Jacopo,
> > 
> > Thanks for your work.
> > 
> > On 2024-05-03 17:51:19 +0200, Jacopo Mondi wrote:
> > > Create the subdevice state with v4l2_subdev_init_finalize() and
> > > implement the init_state() operation to guarantee the state is initialized.
> > 
> > This fails and produces -EPIPE error when trying to capture on R-Car M3N 
> > using ADV748x. If I only apply patch 1, 2, 3 of this series it works as 
> > expected, when I apply this as well capture breaks.
> > 
> > You can test this on a remote Gen3 board without any HDMI or CVBS 
> > source, just enable a test patterns on the HDMI and AFE sources, see [1] 
> > for my test-case output which demonstrates how I produce the failure.
> > 
> > Oddly enough if I use the old vin-test package I can capture from HDMI 
> > while CVBS capture still fails with -EPIPE. Not sure what's going on.
> > 
> > 1. Ignore the "Unable to get format: Inappropriate ioctl for device 
> >    (25)." from the "yavta --set-control ..." commands, they are 
> >    unimportant and not new. Focus in the "Unable to start streaming: 
> >    Broken pipe (32)." errors from "yavta -c10 --file=..  /dev/videoX" 
> >    calls, they are not new ;-)
> > 
> > ===> star <===
> > Last login: Fri May  3 17:48:06 2024
> > 
> > Renesas Salvator-X 2nd version board based on r8a77965
> > 0;root@arm64:~
> > arm64 ~ # echo wkbfirytku $$; rm -fr /tmp/vin-capture; echo ygxezpiinz $?
> > echo wkbfirytku $$; rm -fr /tmp/vin-capture; echo ygxezpiinz $?
> > 
> > wkbfirytku 403
> > ygxezpiinz 0
> > echo agyxksooma $$; mkdir -p /tmp/vin-capture; echo kvwostutox $?
> > 0;root@arm64:~
> > arm64 ~ # echo agyxksooma $$; mkdir -p /tmp/vin-capture; echo kvwostutox $?
> > 
> > agyxksooma 403
> > kvwostutox 0
> > echo vtmzcdhjtc $$; grep -l 'adv748x 4-0070 afe' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo mwqkcmnuju $?
> > 0;root@arm64:~
> > arm64 ~ # echo vtmzcdhjtc $$; grep -l 'adv748x 4-0070 afe' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo mwqkcmnuju $?
> > 
> > vtmzcdhjtc 403
> > /dev/v4l-subdev1
> > mwqkcmnuju 0
> > echo yavkazxvyn $$; grep -l 'VIN0 output' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo wpijcgewrd $?
> > 0;root@arm64:~
> > arm64 ~ # echo yavkazxvyn $$; grep -l 'VIN0 output' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo wpijcgewrd $?
> > 
> > yavkazxvyn 403
> > /dev/video0
> > wpijcgewrd 0
> > echo nkitspntrm $$; for mdev in /dev/media*; do if [[ '$(media-ctl -d $mdev -p | grep 'rcar_vin')' != '' ]]; then echo $mdev; break; fi; done; echo ngoqmbhfqr $?
> > 0;root@arm64:~
> > arm64 ~ # echo nkitspntrm $$; for mdev in /dev/media*; do if [[ '$(media-ctl -d $mdev -p | grep 'rcar_vin')' != '' ]]; then echo $mdev; break; fi; done; echo ngoqmbhfqr $?
> > 
> > nkitspntrm 403
> > /dev/media0
> > ngoqmbhfqr 0
> > echo ggokwokuyh $$; media-ctl -d /dev/media0 -r; echo yydmasvhba $?
> > 0;root@arm64:~
> > arm64 ~ # echo ggokwokuyh $$; media-ctl -d /dev/media0 -r; echo yydmasvhba $?
> > 
> > ggokwokuyh 403
> > yydmasvhba 0
> > 0;root@arm64:~
> > echo ftqgotsvwt $$; media-ctl -d /dev/media0 -l "'adv748x 4-0070 afe':8 -> 'adv748x 4-0070 txb':0 [1]"; echo ohfyvhjfrt $?
> > arm64 ~ # echo ftqgotsvwt $$; media-ctl -d /dev/media0 -l "'adv748x 4-0070 afe':8 -> 'adv748x 4-0070 txb':0 [1]"; echo ohfyvhjfrt $?
> > 
> > ftqgotsvwt 403
> > ohfyvhjfrt 0
> > 0;root@arm64:~
> > echo nhtnyteajn $$; media-ctl -d /dev/media0 -l "'rcar_csi2 fea80000.csi2':1 -> 'VIN0 output':0 [1]"; echo vovincdzqi $?
> > arm64 ~ # echo nhtnyteajn $$; media-ctl -d /dev/media0 -l "'rcar_csi2 fea80000.csi2':1 -> 'VIN0 output':0 [1]"; echo vovincdzqi $?
> > 
> > nhtnyteajn 403
> > vovincdzqi 0
> > 0;root@arm64:~
> > echo rulkcoorky $$; media-ctl -d /dev/media0 --get-v4l2 "'adv748x 4-0070 afe':8"; echo esoiygqdfq $?
> > arm64 ~ # echo rulkcoorky $$; media-ctl -d /dev/media0 --get-v4l2 "'adv748x 4-0070 afe':8"; echo esoiygqdfq $?
> > 
> > rulkcoorky 403
> > 		[stream:0 fmt:UYVY8_2X8/720x240 field:alternate colorspace:smpte170m]
> > esoiygqdfq 0
> > 0;root@arm64:~
> > echo dmdgcctvqh $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 afe':8 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo ighfsicfux $?
> > arm64 ~ # echo dmdgcctvqh $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 afe':8 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo ighfsicfux $?
> > 
> > dmdgcctvqh 403
> > ighfsicfux 0
> > 0;root@arm64:~
> > echo mqlvxrvync $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 txb':0 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo elpiosmlzj $?
> 
> Should this be pad 1 instead of pad 0 ?

Indeed, before this patch I could set the format on either pad 0 or 1, 
after this only on 1. That is OK and setting it on 1 allows capture of 
both HDMI and CVBS on Gen3. However it uncovers other issues in patch 
7/11, will reply to that patch.

> 
> > arm64 ~ # echo mqlvxrvync $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 txb':0 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo elpiosmlzj $?
> > 
> > mqlvxrvync 403
> > elpiosmlzj 0
> > 0;root@arm64:~
> > echo aoldaiatak $$; media-ctl -d /dev/media0 -V "'rcar_csi2 fea80000.csi2':1 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo iymsospuex $?
> > arm64 ~ # echo aoldaiatak $$; media-ctl -d /dev/media0 -V "'rcar_csi2 fea80000.csi2':1 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo iymsospuex $?
> > 
> > aoldaiatak 403
> > iymsospuex 0
> > 0;root@arm64:~
> > echo nxpbvfvtbv $$; yavta -f RGB565 -s 720x480 --field interlaced /dev/video0; echo dppdatfote $?
> > arm64 ~ # echo nxpbvfvtbv $$; yavta -f RGB565 -s 720x480 --field interlaced /dev/video0; echo dppdatfote $?
> > 
> > nxpbvfvtbv 403
> > Device /dev/video0 opened.
> > Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
> > Video format set: RGB565 (50424752) 720x480 (stride 1440) field interlaced buffer size 691200
> > Video format: RGB565 (50424752) 720x480 (stride 1440) field interlaced buffer size 691200
> > dppdatfote 0
> > echo zsqtrrojrr $$; yavta --set-control '0x009f0903 1' /dev/v4l-subdev1; echo xkrxhzzdcq $?
> > 0;root@arm64:~
> > arm64 ~ # echo zsqtrrojrr $$; yavta --set-control '0x009f0903 1' /dev/v4l-subdev1; echo xkrxhzzdcq $?
> > 
> > zsqtrrojrr 403
> > Device /dev/v4l-subdev1 opened.
> > Control 0x009f0903 set to 1, is 1
> > Unable to get format: Inappropriate ioctl for device (25).
> > xkrxhzzdcq 0
> > echo jifvldisax $$; yavta -c10 --file=/tmp/vin-capture/cvbs-solid-#.bin /dev/video0; echo tmzmlnjlsq $?
> > 0;root@arm64:~
> > arm64 ~ # echo jifvldisax $$; yavta -c10 --file=/tmp/vin-capture/cvbs-solid-#.bin /dev/video0; echo tmzmlnjlsq $?
> > 
> > jifvldisax 403
> > Device /dev/video0 opened.
> > Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
> > Video format: RGB565 (50424752) 720x480 (stride 1440) field interlaced buffer size 691200
> > 8 buffers requested.
> > length: 691200 offset: 0 timestamp type/source: mono/EoF
> > Buffer 0/0 mapped at address 0xffffb1037000.
> > length: 691200 offset: 32768 timestamp type/source: mono/EoF
> > Buffer 1/0 mapped at address 0xffffb0f8e000.
> > length: 691200 offset: 65536 timestamp type/source: mono/EoF
> > Buffer 2/0 mapped at address 0xffffb0ee5000.
> > length: 691200 offset: 98304 timestamp type/source: mono/EoF
> > Buffer 3/0 mapped at address 0xffffb0e3c000.
> > length: 691200 offset: 131072 timestamp type/source: mono/EoF
> > Buffer 4/0 mapped at address 0xffffb0d93000.
> > length: 691200 offset: 163840 timestamp type/source: mono/EoF
> > Buffer 5/0 mapped at address 0xffffb0cea000.
> > length: 691200 offset: 196608 timestamp type/source: mono/EoF
> > Buffer 6/0 mapped at address 0xffffb0c41000.
> > length: 691200 offset: 229376 timestamp type/source: mono/EoF
> > Buffer 7/0 mapped at address 0xffffb0b98000.
> > Unable to start streaming: Broken pipe (32).
> > 8 buffers released.
> > tmzmlnjlsq 0
> > echo wojwgdpxnx $$; yavta --set-control '0x009f0903 2' /dev/v4l-subdev1; echo dghaavszch $?
> > 0;root@arm64:~
> > arm64 ~ # echo wojwgdpxnx $$; yavta --set-control '0x009f0903 2' /dev/v4l-subdev1; echo dghaavszch $?
> > 
> > wojwgdpxnx 403
> > Device /dev/v4l-subdev1 opened.
> > Control 0x009f0903 set to 2, is 2
> > Unable to get format: Inappropriate ioctl for device (25).
> > dghaavszch 0
> > 0;root@arm64:~
> > echo tldblgblou $$; yavta -c10 --file=/tmp/vin-capture/cvbs-colorbars-#.bin /dev/video0; echo pofbqvttib $?
> > arm64 ~ # echo tldblgblou $$; yavta -c10 --file=/tmp/vin-capture/cvbs-colorbars-#.bin /dev/video0; echo pofbqvttib $?
> > 
> > tldblgblou 403
> > Device /dev/video0 opened.
> > Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
> > Video format: RGB565 (50424752) 720x480 (stride 1440) field interlaced buffer size 691200
> > 8 buffers requested.
> > length: 691200 offset: 0 timestamp type/source: mono/EoF
> > Buffer 0/0 mapped at address 0xffffb75f7000.
> > length: 691200 offset: 32768 timestamp type/source: mono/EoF
> > Buffer 1/0 mapped at address 0xffffb754e000.
> > length: 691200 offset: 65536 timestamp type/source: mono/EoF
> > Buffer 2/0 mapped at address 0xffffb74a5000.
> > length: 691200 offset: 98304 timestamp type/source: mono/EoF
> > Buffer 3/0 mapped at address 0xffffb73fc000.
> > length: 691200 offset: 131072 timestamp type/source: mono/EoF
> > Buffer 4/0 mapped at address 0xffffb7353000.
> > length: 691200 offset: 163840 timestamp type/source: mono/EoF
> > Buffer 5/0 mapped at address 0xffffb72aa000.
> > length: 691200 offset: 196608 timestamp type/source: mono/EoF
> > Buffer 6/0 mapped at address 0xffffb7201000.
> > length: 691200 offset: 229376 timestamp type/source: mono/EoF
> > Buffer 7/0 mapped at address 0xffffb7158000.
> > Unable to start streaming: Broken pipe (32).
> > 8 buffers released.
> > pofbqvttib 0
> > 0;root@arm64:~
> > echo maubyyzesr $$; yavta --set-control '0x009f0903 0' /dev/v4l-subdev1; echo dzbvegabvy $?
> > arm64 ~ # echo maubyyzesr $$; yavta --set-control '0x009f0903 0' /dev/v4l-subdev1; echo dzbvegabvy $?
> > 
> > maubyyzesr 403
> > Device /dev/v4l-subdev1 opened.
> > Control 0x009f0903 set to 0, is 0
> > Unable to get format: Inappropriate ioctl for device (25).
> > dzbvegabvy 0
> > 0;root@arm64:~
> > echo pffcsadwlt $$; test -e /tmp/vin-capture/cvbs-solid-000007.bin; echo xilwxnvrrd $?
> > arm64 ~ # echo pffcsadwlt $$; test -e /tmp/vin-capture/cvbs-solid-000007.bin; echo xilwxnvrrd $?
> > 
> > pffcsadwlt 403
> > xilwxnvrrd 1
> > echo grglvpwocj $$; grep -l 'adv748x 4-0070 hdmi' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo hvcawnkqdt $?
> > 0;root@arm64:~
> > arm64 ~ # echo grglvpwocj $$; grep -l 'adv748x 4-0070 hdmi' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo hvcawnkqdt $?
> > 
> > grglvpwocj 403
> > /dev/v4l-subdev4
> > hvcawnkqdt 0
> > echo nnpccbuzak $$; media-ctl -d /dev/media0 -r; echo zigvuehatt $?
> > 0;root@arm64:~
> > arm64 ~ # echo nnpccbuzak $$; media-ctl -d /dev/media0 -r; echo zigvuehatt $?
> > 
> > nnpccbuzak 403
> > zigvuehatt 0
> > echo xyngygxuyr $$; media-ctl -d /dev/media0 -l "'adv748x 4-0070 hdmi':1 -> 'adv748x 4-0070 txa':0 [1]"; echo oknofsbyvn $?
> > 0;root@arm64:~
> > arm64 ~ # echo xyngygxuyr $$; media-ctl -d /dev/media0 -l "'adv748x 4-0070 hdmi':1 -> 'adv748x 4-0070 txa':0 [1]"; echo oknofsbyvn $?
> > 
> > xyngygxuyr 403
> > oknofsbyvn 0
> > 0;root@arm64:~
> > echo jkzuanypyp $$; media-ctl -d /dev/media0 -l "'rcar_csi2 feaa0000.csi2':1 -> 'VIN0 output':0 [1]"; echo onsaxggllz $?
> > arm64 ~ # echo jkzuanypyp $$; media-ctl -d /dev/media0 -l "'rcar_csi2 feaa0000.csi2':1 -> 'VIN0 output':0 [1]"; echo onsaxggllz $?
> > 
> > jkzuanypyp 403
> > onsaxggllz 0
> > 0;root@arm64:~
> > echo lttzkqwwoa $$; media-ctl -d /dev/media0 --get-v4l2 "'adv748x 4-0070 hdmi':1"; echo imxtuqbxgf $?
> > arm64 ~ # echo lttzkqwwoa $$; media-ctl -d /dev/media0 --get-v4l2 "'adv748x 4-0070 hdmi':1"; echo imxtuqbxgf $?
> > 
> > lttzkqwwoa 403
> > 		[stream:0 fmt:RGB888_1X24/1280x720 field:none colorspace:srgb]
> > imxtuqbxgf 0
> > 0;root@arm64:~
> > echo degzwngmzk $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 hdmi':1 [fmt:RGB888_1X24/1280x720 field:none]"; echo vgqpdhbhjt $?
> > arm64 ~ # echo degzwngmzk $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 hdmi':1 [fmt:RGB888_1X24/1280x720 field:none]"; echo vgqpdhbhjt $?
> > 
> > degzwngmzk 403
> > vgqpdhbhjt 0
> > 0;root@arm64:~
> > echo iwtingcfbz $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 txa':0 [fmt:RGB888_1X24/1280x720 field:none]"; echo qircbjupbq $?
> > arm64 ~ # echo iwtingcfbz $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 txa':0 [fmt:RGB888_1X24/1280x720 field:none]"; echo qircbjupbq $?
> > 
> > iwtingcfbz 403
> > qircbjupbq 0
> > 0;root@arm64:~
> > echo twrjqisqff $$; media-ctl -d /dev/media0 -V "'rcar_csi2 feaa0000.csi2':1 [fmt:RGB888_1X24/1280x720 field:none]"; echo ocaivovrxk $?
> > arm64 ~ # echo twrjqisqff $$; media-ctl -d /dev/media0 -V "'rcar_csi2 feaa0000.csi2':1 [fmt:RGB888_1X24/1280x720 field:none]"; echo ocaivovrxk $?
> > 
> > twrjqisqff 403
> > ocaivovrxk 0
> > echo ajqwydmzik $$; yavta -f RGB565 -s 1280x720 --field none /dev/video0; echo fayawxvllj $?
> > 0;root@arm64:~
> > arm64 ~ # echo ajqwydmzik $$; yavta -f RGB565 -s 1280x720 --field none /dev/video0; echo fayawxvllj $?
> > 
> > ajqwydmzik 403
> > Device /dev/video0 opened.
> > Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
> > Video format set: RGB565 (50424752) 1280x720 (stride 2560) field none buffer size 1843200
> > Video format: RGB565 (50424752) 1280x720 (stride 2560) field none buffer size 1843200
> > fayawxvllj 0
> > echo pealtxybun $$; yavta --set-control '0x009f0903 1' /dev/v4l-subdev4; echo juhrczaeao $?
> > 0;root@arm64:~
> > arm64 ~ # echo pealtxybun $$; yavta --set-control '0x009f0903 1' /dev/v4l-subdev4; echo juhrczaeao $?
> > 
> > pealtxybun 403
> > Device /dev/v4l-subdev4 opened.
> > Control 0x009f0903 set to 1, is 1
> > Unable to get format: Inappropriate ioctl for device (25).
> > juhrczaeao 0
> > 0;root@arm64:~
> > echo oaxoraqdid $$; yavta -c10 --file=/tmp/vin-capture/hdmi-solid-#.bin /dev/video0; echo bfsxvmqitj $?
> > arm64 ~ # echo oaxoraqdid $$; yavta -c10 --file=/tmp/vin-capture/hdmi-solid-#.bin /dev/video0; echo bfsxvmqitj $?
> > 
> > oaxoraqdid 403
> > Device /dev/video0 opened.
> > Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
> > Video format: RGB565 (50424752) 1280x720 (stride 2560) field none buffer size 1843200
> > 8 buffers requested.
> > length: 1843200 offset: 0 timestamp type/source: mono/EoF
> > Buffer 0/0 mapped at address 0xffffafa8e000.
> > length: 1843200 offset: 32768 timestamp type/source: mono/EoF
> > Buffer 1/0 mapped at address 0xffffaf8cc000.
> > length: 1843200 offset: 65536 timestamp type/source: mono/EoF
> > Buffer 2/0 mapped at address 0xffffaf70a000.
> > length: 1843200 offset: 98304 timestamp type/source: mono/EoF
> > Buffer 3/0 mapped at address 0xffffaf548000.
> > length: 1843200 offset: 131072 timestamp type/source: mono/EoF
> > Buffer 4/0 mapped at address 0xffffaf386000.
> > length: 1843200 offset: 163840 timestamp type/source: mono/EoF
> > Buffer 5/0 mapped at address 0xffffaf1c4000.
> > length: 1843200 offset: 196608 timestamp type/source: mono/EoF
> > Buffer 6/0 mapped at address 0xffffaf002000.
> > length: 1843200 offset: 229376 timestamp type/source: mono/EoF
> > Buffer 7/0 mapped at address 0xffffaee40000.
> > Unable to start streaming: Broken pipe (32).
> > 8 buffers released.
> > bfsxvmqitj 0
> > echo pmbwbnrkkw $$; yavta --set-control '0x009f0903 2' /dev/v4l-subdev4; echo ucgivtjwvw $?
> > 0;root@arm64:~
> > arm64 ~ # echo pmbwbnrkkw $$; yavta --set-control '0x009f0903 2' /dev/v4l-subdev4; echo ucgivtjwvw $?
> > 
> > pmbwbnrkkw 403
> > Device /dev/v4l-subdev4 opened.
> > Control 0x009f0903 set to 2, is 2
> > Unable to get format: Inappropriate ioctl for device (25).
> > ucgivtjwvw 0
> > 0;root@arm64:~
> > echo rvkbtaiuan $$; yavta -c10 --file=/tmp/vin-capture/hdmi-colorbars-#.bin /dev/video0; echo fdlcrvrylc $?
> > arm64 ~ # echo rvkbtaiuan $$; yavta -c10 --file=/tmp/vin-capture/hdmi-colorbars-#.bin /dev/video0; echo fdlcrvrylc $?
> > 
> > rvkbtaiuan 403
> > Device /dev/video0 opened.
> > Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
> > Video format: RGB565 (50424752) 1280x720 (stride 2560) field none buffer size 1843200
> > 8 buffers requested.
> > length: 1843200 offset: 0 timestamp type/source: mono/EoF
> > Buffer 0/0 mapped at address 0xffff86f8e000.
> > length: 1843200 offset: 32768 timestamp type/source: mono/EoF
> > Buffer 1/0 mapped at address 0xffff86dcc000.
> > length: 1843200 offset: 65536 timestamp type/source: mono/EoF
> > Buffer 2/0 mapped at address 0xffff86c0a000.
> > length: 1843200 offset: 98304 timestamp type/source: mono/EoF
> > Buffer 3/0 mapped at address 0xffff86a48000.
> > length: 1843200 offset: 131072 timestamp type/source: mono/EoF
> > Buffer 4/0 mapped at address 0xffff86886000.
> > length: 1843200 offset: 163840 timestamp type/source: mono/EoF
> > Buffer 5/0 mapped at address 0xffff866c4000.
> > length: 1843200 offset: 196608 timestamp type/source: mono/EoF
> > Buffer 6/0 mapped at address 0xffff86502000.
> > length: 1843200 offset: 229376 timestamp type/source: mono/EoF
> > Buffer 7/0 mapped at address 0xffff86340000.
> > Unable to start streaming: Broken pipe (32).
> > 8 buffers released.
> > fdlcrvrylc 0
> > 0;root@arm64:~
> > echo hrgnrsupul $$; yavta --set-control '0x009f0903 0' /dev/v4l-subdev4; echo bvgysmcxve $?
> > arm64 ~ # echo hrgnrsupul $$; yavta --set-control '0x009f0903 0' /dev/v4l-subdev4; echo bvgysmcxve $?
> > 
> > hrgnrsupul 403
> > Device /dev/v4l-subdev4 opened.
> > Control 0x009f0903 set to 0, is 0
> > Unable to get format: Inappropriate ioctl for device (25).
> > bvgysmcxve 0
> > echo znlqovrrra $$; test -e /tmp/vin-capture/hdmi-solid-000007.bin; echo sjpcuiptaf $?
> > 0;root@arm64:~
> > arm64 ~ # echo znlqovrrra $$; test -e /tmp/vin-capture/hdmi-solid-000007.bin; echo sjpcuiptaf $?
> > 
> > znlqovrrra 403
> > sjpcuiptaf 1
> > exit
> > ===> end <===
> > 
> > > 
> > > Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
> > > ---
> > >  drivers/media/platform/renesas/rcar-csi2.c | 138 +++++++++++----------
> > >  1 file changed, 75 insertions(+), 63 deletions(-)
> > > 
> > > diff --git a/drivers/media/platform/renesas/rcar-csi2.c b/drivers/media/platform/renesas/rcar-csi2.c
> > > index 2d464e43a5be..4d4dfb59b025 100644
> > > --- a/drivers/media/platform/renesas/rcar-csi2.c
> > > +++ b/drivers/media/platform/renesas/rcar-csi2.c
> > > @@ -587,7 +587,8 @@ enum rcar_csi2_pads {
> > >  struct rcar_csi2_info {
> > >  	int (*init_phtw)(struct rcar_csi2 *priv, unsigned int mbps);
> > >  	int (*phy_post_init)(struct rcar_csi2 *priv);
> > > -	int (*start_receiver)(struct rcar_csi2 *priv);
> > > +	int (*start_receiver)(struct rcar_csi2 *priv,
> > > +			      struct v4l2_subdev_state *state);
> > >  	void (*enter_standby)(struct rcar_csi2 *priv);
> > >  	const struct rcsi2_mbps_reg *hsfreqrange;
> > >  	unsigned int csi0clkfreqrange;
> > > @@ -613,8 +614,6 @@ struct rcar_csi2 {
> > >  
> > >  	int channel_vc[4];
> > >  
> > > -	struct mutex lock; /* Protects mf and stream_count. */
> > > -	struct v4l2_mbus_framefmt mf;
> > >  	int stream_count;
> > >  
> > >  	bool cphy;
> > > @@ -808,20 +807,25 @@ static int rcsi2_get_active_lanes(struct rcar_csi2 *priv,
> > >  	return 0;
> > >  }
> > >  
> > > -static int rcsi2_start_receiver_gen3(struct rcar_csi2 *priv)
> > > +static int rcsi2_start_receiver_gen3(struct rcar_csi2 *priv,
> > > +				     struct v4l2_subdev_state *state)
> > >  {
> > >  	const struct rcar_csi2_format *format;
> > >  	u32 phycnt, vcdt = 0, vcdt2 = 0, fld = 0;
> > > +	struct v4l2_mbus_framefmt *fmt;
> > >  	unsigned int lanes;
> > >  	unsigned int i;
> > >  	int mbps, ret;
> > >  
> > > +	/* Use the format on the sink pad to compute the receiver config. */
> > > +	fmt = v4l2_subdev_state_get_format(state, RCAR_CSI2_SINK);
> > > +
> > >  	dev_dbg(priv->dev, "Input size (%ux%u%c)\n",
> > > -		priv->mf.width, priv->mf.height,
> > > -		priv->mf.field == V4L2_FIELD_NONE ? 'p' : 'i');
> > > +		fmt->width, fmt->height,
> > > +		fmt->field == V4L2_FIELD_NONE ? 'p' : 'i');
> > >  
> > >  	/* Code is validated in set_fmt. */
> > > -	format = rcsi2_code_to_fmt(priv->mf.code);
> > > +	format = rcsi2_code_to_fmt(fmt->code);
> > >  	if (!format)
> > >  		return -EINVAL;
> > >  
> > > @@ -849,11 +853,11 @@ static int rcsi2_start_receiver_gen3(struct rcar_csi2 *priv)
> > >  			vcdt2 |= vcdt_part << ((i % 2) * 16);
> > >  	}
> > >  
> > > -	if (priv->mf.field == V4L2_FIELD_ALTERNATE) {
> > > +	if (fmt->field == V4L2_FIELD_ALTERNATE) {
> > >  		fld = FLD_DET_SEL(1) | FLD_FLD_EN4 | FLD_FLD_EN3 | FLD_FLD_EN2
> > >  			| FLD_FLD_EN;
> > >  
> > > -		if (priv->mf.height == 240)
> > > +		if (fmt->height == 240)
> > >  			fld |= FLD_FLD_NUM(0);
> > >  		else
> > >  			fld |= FLD_FLD_NUM(1);
> > > @@ -1049,15 +1053,18 @@ static int rcsi2_c_phy_setting_v4h(struct rcar_csi2 *priv, int msps)
> > >  	return 0;
> > >  }
> > >  
> > > -static int rcsi2_start_receiver_v4h(struct rcar_csi2 *priv)
> > > +static int rcsi2_start_receiver_v4h(struct rcar_csi2 *priv,
> > > +				    struct v4l2_subdev_state *state)
> > >  {
> > >  	const struct rcar_csi2_format *format;
> > > +	struct v4l2_mbus_framefmt *fmt;
> > >  	unsigned int lanes;
> > >  	int msps;
> > >  	int ret;
> > >  
> > > -	/* Calculate parameters */
> > > -	format = rcsi2_code_to_fmt(priv->mf.code);
> > > +	/* Use the format on the sink pad to compute the receiver config. */
> > > +	fmt = v4l2_subdev_state_get_format(state, RCAR_CSI2_SINK);
> > > +	format = rcsi2_code_to_fmt(fmt->code);
> > >  	if (!format)
> > >  		return -EINVAL;
> > >  
> > > @@ -1114,7 +1121,7 @@ static int rcsi2_start_receiver_v4h(struct rcar_csi2 *priv)
> > >  	return 0;
> > >  }
> > >  
> > > -static int rcsi2_start(struct rcar_csi2 *priv)
> > > +static int rcsi2_start(struct rcar_csi2 *priv, struct v4l2_subdev_state *state)
> > >  {
> > >  	int ret;
> > >  
> > > @@ -1122,7 +1129,7 @@ static int rcsi2_start(struct rcar_csi2 *priv)
> > >  	if (ret < 0)
> > >  		return ret;
> > >  
> > > -	ret = priv->info->start_receiver(priv);
> > > +	ret = priv->info->start_receiver(priv, state);
> > >  	if (ret) {
> > >  		rcsi2_enter_standby(priv);
> > >  		return ret;
> > > @@ -1146,17 +1153,16 @@ static void rcsi2_stop(struct rcar_csi2 *priv)
> > >  static int rcsi2_s_stream(struct v4l2_subdev *sd, int enable)
> > >  {
> > >  	struct rcar_csi2 *priv = sd_to_csi2(sd);
> > > +	struct v4l2_subdev_state *state;
> > >  	int ret = 0;
> > >  
> > > -	mutex_lock(&priv->lock);
> > > +	if (!priv->remote)
> > > +		return -ENODEV;
> > >  
> > > -	if (!priv->remote) {
> > > -		ret = -ENODEV;
> > > -		goto out;
> > > -	}
> > > +	state = v4l2_subdev_lock_and_get_active_state(&priv->subdev);
> > >  
> > >  	if (enable && priv->stream_count == 0) {
> > > -		ret = rcsi2_start(priv);
> > > +		ret = rcsi2_start(priv, state);
> > >  		if (ret)
> > >  			goto out;
> > >  	} else if (!enable && priv->stream_count == 1) {
> > > @@ -1165,49 +1171,26 @@ static int rcsi2_s_stream(struct v4l2_subdev *sd, int enable)
> > >  
> > >  	priv->stream_count += enable ? 1 : -1;
> > >  out:
> > > -	mutex_unlock(&priv->lock);
> > > +	v4l2_subdev_unlock_state(state);
> > >  
> > >  	return ret;
> > >  }
> > >  
> > >  static int rcsi2_set_pad_format(struct v4l2_subdev *sd,
> > > -				struct v4l2_subdev_state *sd_state,
> > > +				struct v4l2_subdev_state *state,
> > >  				struct v4l2_subdev_format *format)
> > >  {
> > > -	struct rcar_csi2 *priv = sd_to_csi2(sd);
> > > -	struct v4l2_mbus_framefmt *framefmt;
> > > -
> > > -	mutex_lock(&priv->lock);
> > > +	if (format->pad > RCAR_CSI2_SINK)
> > > +		return v4l2_subdev_get_fmt(sd, state, format);
> > >  
> > >  	if (!rcsi2_code_to_fmt(format->format.code))
> > >  		format->format.code = rcar_csi2_formats[0].code;
> > >  
> > > -	if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
> > > -		priv->mf = format->format;
> > > -	} else {
> > > -		framefmt = v4l2_subdev_state_get_format(sd_state, 0);
> > > -		*framefmt = format->format;
> > > -	}
> > > -
> > > -	mutex_unlock(&priv->lock);
> > > -
> > > -	return 0;
> > > -}
> > > -
> > > -static int rcsi2_get_pad_format(struct v4l2_subdev *sd,
> > > -				struct v4l2_subdev_state *sd_state,
> > > -				struct v4l2_subdev_format *format)
> > > -{
> > > -	struct rcar_csi2 *priv = sd_to_csi2(sd);
> > > -
> > > -	mutex_lock(&priv->lock);
> > > -
> > > -	if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
> > > -		format->format = priv->mf;
> > > -	else
> > > -		format->format = *v4l2_subdev_state_get_format(sd_state, 0);
> > > +	*v4l2_subdev_state_get_format(state, format->pad) = format->format;
> > >  
> > > -	mutex_unlock(&priv->lock);
> > > +	/* Propagate the format to the source pads. */
> > > +	for (unsigned int i = RCAR_CSI2_SOURCE_VC0; i < NR_OF_RCAR_CSI2_PAD; i++)
> > > +		*v4l2_subdev_state_get_format(state, i) = format->format;
> > >  
> > >  	return 0;
> > >  }
> > > @@ -1218,7 +1201,7 @@ static const struct v4l2_subdev_video_ops rcar_csi2_video_ops = {
> > >  
> > >  static const struct v4l2_subdev_pad_ops rcar_csi2_pad_ops = {
> > >  	.set_fmt = rcsi2_set_pad_format,
> > > -	.get_fmt = rcsi2_get_pad_format,
> > > +	.get_fmt = v4l2_subdev_get_fmt,
> > >  };
> > >  
> > >  static const struct v4l2_subdev_ops rcar_csi2_subdev_ops = {
> > > @@ -1226,6 +1209,30 @@ static const struct v4l2_subdev_ops rcar_csi2_subdev_ops = {
> > >  	.pad	= &rcar_csi2_pad_ops,
> > >  };
> > >  
> > > +static int rcsi2_init_state(struct v4l2_subdev *sd,
> > > +			    struct v4l2_subdev_state *state)
> > > +{
> > > +	static const struct v4l2_mbus_framefmt rcar_csi2_default_fmt = {
> > > +		.width		= 1920,
> > > +		.height		= 1080,
> > > +		.code		= MEDIA_BUS_FMT_RGB888_1X24,
> > > +		.colorspace	= V4L2_COLORSPACE_SRGB,
> > > +		.field		= V4L2_FIELD_NONE,
> > > +		.ycbcr_enc	= V4L2_YCBCR_ENC_DEFAULT,
> > > +		.quantization	= V4L2_QUANTIZATION_DEFAULT,
> > > +		.xfer_func	= V4L2_XFER_FUNC_DEFAULT,
> > > +	};
> > > +
> > > +	for (unsigned int i = RCAR_CSI2_SINK; i < NR_OF_RCAR_CSI2_PAD; i++)
> > > +		*v4l2_subdev_state_get_format(state, i) = rcar_csi2_default_fmt;
> > > +
> > > +	return 0;
> > > +}
> > > +
> > > +static const struct v4l2_subdev_internal_ops rcar_csi2_internal_ops = {
> > > +	.init_state = rcsi2_init_state,
> > > +};
> > > +
> > >  static irqreturn_t rcsi2_irq(int irq, void *data)
> > >  {
> > >  	struct rcar_csi2 *priv = data;
> > > @@ -1251,14 +1258,17 @@ static irqreturn_t rcsi2_irq(int irq, void *data)
> > >  
> > >  static irqreturn_t rcsi2_irq_thread(int irq, void *data)
> > >  {
> > > +	struct v4l2_subdev_state *state;
> > >  	struct rcar_csi2 *priv = data;
> > >  
> > > -	mutex_lock(&priv->lock);
> > > +	state = v4l2_subdev_lock_and_get_active_state(&priv->subdev);
> > > +
> > >  	rcsi2_stop(priv);
> > >  	usleep_range(1000, 2000);
> > > -	if (rcsi2_start(priv))
> > > +	if (rcsi2_start(priv, state))
> > >  		dev_warn(priv->dev, "Failed to restart CSI-2 receiver\n");
> > > -	mutex_unlock(&priv->lock);
> > > +
> > > +	v4l2_subdev_unlock_state(state);
> > >  
> > >  	return IRQ_HANDLED;
> > >  }
> > > @@ -1870,23 +1880,23 @@ static int rcsi2_probe(struct platform_device *pdev)
> > >  
> > >  	priv->dev = &pdev->dev;
> > >  
> > > -	mutex_init(&priv->lock);
> > >  	priv->stream_count = 0;
> > >  
> > >  	ret = rcsi2_probe_resources(priv, pdev);
> > >  	if (ret) {
> > >  		dev_err(priv->dev, "Failed to get resources\n");
> > > -		goto error_mutex;
> > > +		return ret;
> > >  	}
> > >  
> > >  	platform_set_drvdata(pdev, priv);
> > >  
> > >  	ret = rcsi2_parse_dt(priv);
> > >  	if (ret)
> > > -		goto error_mutex;
> > > +		return ret;
> > >  
> > >  	priv->subdev.owner = THIS_MODULE;
> > >  	priv->subdev.dev = &pdev->dev;
> > > +	priv->subdev.internal_ops = &rcar_csi2_internal_ops;
> > >  	v4l2_subdev_init(&priv->subdev, &rcar_csi2_subdev_ops);
> > >  	v4l2_set_subdevdata(&priv->subdev, &pdev->dev);
> > >  	snprintf(priv->subdev.name, sizeof(priv->subdev.name), "%s %s",
> > > @@ -1912,21 +1922,25 @@ static int rcsi2_probe(struct platform_device *pdev)
> > >  
> > >  	pm_runtime_enable(&pdev->dev);
> > >  
> > > +	ret = v4l2_subdev_init_finalize(&priv->subdev);
> > > +	if (ret)
> > > +		goto error_pm_runtime;
> > > +
> > >  	ret = v4l2_async_register_subdev(&priv->subdev);
> > >  	if (ret < 0)
> > > -		goto error_pm_runtime;
> > > +		goto error_subdev;
> > >  
> > >  	dev_info(priv->dev, "%d lanes found\n", priv->lanes);
> > >  
> > >  	return 0;
> > >  
> > > +error_subdev:
> > > +	v4l2_subdev_cleanup(&priv->subdev);
> > >  error_pm_runtime:
> > >  	pm_runtime_disable(&pdev->dev);
> > >  error_async:
> > >  	v4l2_async_nf_unregister(&priv->notifier);
> > >  	v4l2_async_nf_cleanup(&priv->notifier);
> > > -error_mutex:
> > > -	mutex_destroy(&priv->lock);
> > >  
> > >  	return ret;
> > >  }
> > > @@ -1941,8 +1955,6 @@ static void rcsi2_remove(struct platform_device *pdev)
> > >  	v4l2_subdev_cleanup(&priv->subdev);
> > >  
> > >  	pm_runtime_disable(&pdev->dev);
> > > -
> > > -	mutex_destroy(&priv->lock);
> > >  }
> > >  
> > >  static struct platform_driver rcar_csi2_pdrv = {
> 
> -- 
> Regards,
> 
> Laurent Pinchart

Niklas Söderlund May 6, 2024, 11:26 a.m. UTC | #7

Hello Jacopo,

On 2024-05-06 09:25:08 +0200, Jacopo Mondi wrote:
> Hi Niklas
> 
> 
> On Fri, May 03, 2024 at 08:03:21PM GMT, Niklas Söderlund wrote:
> > Hi Jacopo,
> >
> > Thanks for your work.
> >
> > On 2024-05-03 17:51:19 +0200, Jacopo Mondi wrote:
> > > Create the subdevice state with v4l2_subdev_init_finalize() and
> > > implement the init_state() operation to guarantee the state is initialized.
> >
> > This fails and produces -EPIPE error when trying to capture on R-Car M3N
> > using ADV748x. If I only apply patch 1, 2, 3 of this series it works as
> > expected, when I apply this as well capture breaks.
> >
> > You can test this on a remote Gen3 board without any HDMI or CVBS
> > source, just enable a test patterns on the HDMI and AFE sources, see [1]
> > for my test-case output which demonstrates how I produce the failure.
> >
> > Oddly enough if I use the old vin-test package I can capture from HDMI
> > while CVBS capture still fails with -EPIPE. Not sure what's going on.
> >
> > 1. Ignore the "Unable to get format: Inappropriate ioctl for device
> >    (25)." from the "yavta --set-control ..." commands, they are
> >    unimportant and not new. Focus in the "Unable to start streaming:
> >    Broken pipe (32)." errors from "yavta -c10 --file=..  /dev/videoX"
> >    calls, they are not new ;-)
> >
> > ===> star <===
> > Last login: Fri May  3 17:48:06 2024
> >
> > Renesas Salvator-X 2nd version board based on r8a77965
> > 0;root@arm64:~
> > arm64 ~ # echo wkbfirytku $$; rm -fr /tmp/vin-capture; echo ygxezpiinz $?
> > echo wkbfirytku $$; rm -fr /tmp/vin-capture; echo ygxezpiinz $?
> 
> What are these random strings in test logs ? (out of curiosity)

As Geert pointed out. The odd random strings are part of my test setup, 
it allows me to figure out the start, end and return code of each 
command executed on the target. In a perfect world I would have SSH 
access to all targets and be more clever about it, but for some targets 
all you have is a serial console and need hacks like this :-)

> 
> >
> > wkbfirytku 403
> > ygxezpiinz 0
> > echo agyxksooma $$; mkdir -p /tmp/vin-capture; echo kvwostutox $?
> > 0;root@arm64:~
> > arm64 ~ # echo agyxksooma $$; mkdir -p /tmp/vin-capture; echo kvwostutox $?
> >
> > agyxksooma 403
> > kvwostutox 0
> > echo vtmzcdhjtc $$; grep -l 'adv748x 4-0070 afe' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo mwqkcmnuju $?
> > 0;root@arm64:~
> > arm64 ~ # echo vtmzcdhjtc $$; grep -l 'adv748x 4-0070 afe' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo mwqkcmnuju $?
> >
> > vtmzcdhjtc 403
> > /dev/v4l-subdev1
> > mwqkcmnuju 0
> > echo yavkazxvyn $$; grep -l 'VIN0 output' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo wpijcgewrd $?
> > 0;root@arm64:~
> > arm64 ~ # echo yavkazxvyn $$; grep -l 'VIN0 output' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo wpijcgewrd $?
> >
> > yavkazxvyn 403
> > /dev/video0
> > wpijcgewrd 0
> > echo nkitspntrm $$; for mdev in /dev/media*; do if [[ '$(media-ctl -d $mdev -p | grep 'rcar_vin')' != '' ]]; then echo $mdev; break; fi; done; echo ngoqmbhfqr $?
> > 0;root@arm64:~
> > arm64 ~ # echo nkitspntrm $$; for mdev in /dev/media*; do if [[ '$(media-ctl -d $mdev -p | grep 'rcar_vin')' != '' ]]; then echo $mdev; break; fi; done; echo ngoqmbhfqr $?
> >
> > nkitspntrm 403
> > /dev/media0
> > ngoqmbhfqr 0
> > echo ggokwokuyh $$; media-ctl -d /dev/media0 -r; echo yydmasvhba $?
> > 0;root@arm64:~
> > arm64 ~ # echo ggokwokuyh $$; media-ctl -d /dev/media0 -r; echo yydmasvhba $?
> >
> > ggokwokuyh 403
> > yydmasvhba 0
> > 0;root@arm64:~
> > echo ftqgotsvwt $$; media-ctl -d /dev/media0 -l "'adv748x 4-0070 afe':8 -> 'adv748x 4-0070 txb':0 [1]"; echo ohfyvhjfrt $?
> > arm64 ~ # echo ftqgotsvwt $$; media-ctl -d /dev/media0 -l "'adv748x 4-0070 afe':8 -> 'adv748x 4-0070 txb':0 [1]"; echo ohfyvhjfrt $?
> >
> > ftqgotsvwt 403
> > ohfyvhjfrt 0
> > 0;root@arm64:~
> > echo nhtnyteajn $$; media-ctl -d /dev/media0 -l "'rcar_csi2 fea80000.csi2':1 -> 'VIN0 output':0 [1]"; echo vovincdzqi $?
> > arm64 ~ # echo nhtnyteajn $$; media-ctl -d /dev/media0 -l "'rcar_csi2 fea80000.csi2':1 -> 'VIN0 output':0 [1]"; echo vovincdzqi $?
> >
> > nhtnyteajn 403
> > vovincdzqi 0
> > 0;root@arm64:~
> > echo rulkcoorky $$; media-ctl -d /dev/media0 --get-v4l2 "'adv748x 4-0070 afe':8"; echo esoiygqdfq $?
> > arm64 ~ # echo rulkcoorky $$; media-ctl -d /dev/media0 --get-v4l2 "'adv748x 4-0070 afe':8"; echo esoiygqdfq $?
> >
> > rulkcoorky 403
> > 		[stream:0 fmt:UYVY8_2X8/720x240 field:alternate colorspace:smpte170m]
> > esoiygqdfq 0
> > 0;root@arm64:~
> > echo dmdgcctvqh $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 afe':8 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo ighfsicfux $?
> > arm64 ~ # echo dmdgcctvqh $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 afe':8 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo ighfsicfux $?
> >
> > dmdgcctvqh 403
> > ighfsicfux 0
> > 0;root@arm64:~
> > echo mqlvxrvync $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 txb':0 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo elpiosmlzj $?
> > arm64 ~ # echo mqlvxrvync $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 txb':0 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo elpiosmlzj $?
> >
> > mqlvxrvync 403
> > elpiosmlzj 0
> > 0;root@arm64:~
> > echo aoldaiatak $$; media-ctl -d /dev/media0 -V "'rcar_csi2 fea80000.csi2':1 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo iymsospuex $?
> > arm64 ~ # echo aoldaiatak $$; media-ctl -d /dev/media0 -V "'rcar_csi2 fea80000.csi2':1 [fmt:UYVY8_2X8/720x240 field:alternate]"; echo iymsospuex $?
> 
> Please read the cover letter
> 
> -------------------------------------------------------------------------------
> - R-Car CSI-2
> 
> There's a user-visible change here, as in the past it was possible to set
> format on all pads, and the vin-test scripts do that. In this version I decided
> to make the format configurable on the sink and propagate to sources. I'm not
> sure if this can be considered a user visible change and we need to maintain
> backward compatibility
> -------------------------------------------------------------------------------
> 
> You should set format on pad #0

Sorry I missed that, in this case it was not the root cause, it was 
which pad used on the ADV748x TXB. Per Laurent's suggestion capture now 
works with 1,2,3 and 4 applied. New issue when patch 7 is applied, but 
unrelated to this.

> 
> How do you feel about that ?

I'm OK with anything that makes things more standardiseds, pads and 
formats are a bit of wild west for me. What is the end picture here, 
that no format is set at all on the CSI-2 entities pads? That the CSI-2 
sink pads just reflect whatever format is routed to it from the "other" 
side of the CSI-2 multiplexed link? If so why not remove any set format 
operation now and reflect the un-multiplexed format already?

> 
> 
> >
> > aoldaiatak 403
> > iymsospuex 0
> > 0;root@arm64:~
> > echo nxpbvfvtbv $$; yavta -f RGB565 -s 720x480 --field interlaced /dev/video0; echo dppdatfote $?
> > arm64 ~ # echo nxpbvfvtbv $$; yavta -f RGB565 -s 720x480 --field interlaced /dev/video0; echo dppdatfote $?
> >
> > nxpbvfvtbv 403
> > Device /dev/video0 opened.
> > Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
> > Video format set: RGB565 (50424752) 720x480 (stride 1440) field interlaced buffer size 691200
> > Video format: RGB565 (50424752) 720x480 (stride 1440) field interlaced buffer size 691200
> > dppdatfote 0
> > echo zsqtrrojrr $$; yavta --set-control '0x009f0903 1' /dev/v4l-subdev1; echo xkrxhzzdcq $?
> > 0;root@arm64:~
> > arm64 ~ # echo zsqtrrojrr $$; yavta --set-control '0x009f0903 1' /dev/v4l-subdev1; echo xkrxhzzdcq $?
> >
> > zsqtrrojrr 403
> > Device /dev/v4l-subdev1 opened.
> > Control 0x009f0903 set to 1, is 1
> > Unable to get format: Inappropriate ioctl for device (25).
> > xkrxhzzdcq 0
> > echo jifvldisax $$; yavta -c10 --file=/tmp/vin-capture/cvbs-solid-#.bin /dev/video0; echo tmzmlnjlsq $?
> > 0;root@arm64:~
> > arm64 ~ # echo jifvldisax $$; yavta -c10 --file=/tmp/vin-capture/cvbs-solid-#.bin /dev/video0; echo tmzmlnjlsq $?
> >
> > jifvldisax 403
> > Device /dev/video0 opened.
> > Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
> > Video format: RGB565 (50424752) 720x480 (stride 1440) field interlaced buffer size 691200
> > 8 buffers requested.
> > length: 691200 offset: 0 timestamp type/source: mono/EoF
> > Buffer 0/0 mapped at address 0xffffb1037000.
> > length: 691200 offset: 32768 timestamp type/source: mono/EoF
> > Buffer 1/0 mapped at address 0xffffb0f8e000.
> > length: 691200 offset: 65536 timestamp type/source: mono/EoF
> > Buffer 2/0 mapped at address 0xffffb0ee5000.
> > length: 691200 offset: 98304 timestamp type/source: mono/EoF
> > Buffer 3/0 mapped at address 0xffffb0e3c000.
> > length: 691200 offset: 131072 timestamp type/source: mono/EoF
> > Buffer 4/0 mapped at address 0xffffb0d93000.
> > length: 691200 offset: 163840 timestamp type/source: mono/EoF
> > Buffer 5/0 mapped at address 0xffffb0cea000.
> > length: 691200 offset: 196608 timestamp type/source: mono/EoF
> > Buffer 6/0 mapped at address 0xffffb0c41000.
> > length: 691200 offset: 229376 timestamp type/source: mono/EoF
> > Buffer 7/0 mapped at address 0xffffb0b98000.
> > Unable to start streaming: Broken pipe (32).
> > 8 buffers released.
> > tmzmlnjlsq 0
> > echo wojwgdpxnx $$; yavta --set-control '0x009f0903 2' /dev/v4l-subdev1; echo dghaavszch $?
> > 0;root@arm64:~
> > arm64 ~ # echo wojwgdpxnx $$; yavta --set-control '0x009f0903 2' /dev/v4l-subdev1; echo dghaavszch $?
> >
> > wojwgdpxnx 403
> > Device /dev/v4l-subdev1 opened.
> > Control 0x009f0903 set to 2, is 2
> > Unable to get format: Inappropriate ioctl for device (25).
> > dghaavszch 0
> > 0;root@arm64:~
> > echo tldblgblou $$; yavta -c10 --file=/tmp/vin-capture/cvbs-colorbars-#.bin /dev/video0; echo pofbqvttib $?
> > arm64 ~ # echo tldblgblou $$; yavta -c10 --file=/tmp/vin-capture/cvbs-colorbars-#.bin /dev/video0; echo pofbqvttib $?
> >
> > tldblgblou 403
> > Device /dev/video0 opened.
> > Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
> > Video format: RGB565 (50424752) 720x480 (stride 1440) field interlaced buffer size 691200
> > 8 buffers requested.
> > length: 691200 offset: 0 timestamp type/source: mono/EoF
> > Buffer 0/0 mapped at address 0xffffb75f7000.
> > length: 691200 offset: 32768 timestamp type/source: mono/EoF
> > Buffer 1/0 mapped at address 0xffffb754e000.
> > length: 691200 offset: 65536 timestamp type/source: mono/EoF
> > Buffer 2/0 mapped at address 0xffffb74a5000.
> > length: 691200 offset: 98304 timestamp type/source: mono/EoF
> > Buffer 3/0 mapped at address 0xffffb73fc000.
> > length: 691200 offset: 131072 timestamp type/source: mono/EoF
> > Buffer 4/0 mapped at address 0xffffb7353000.
> > length: 691200 offset: 163840 timestamp type/source: mono/EoF
> > Buffer 5/0 mapped at address 0xffffb72aa000.
> > length: 691200 offset: 196608 timestamp type/source: mono/EoF
> > Buffer 6/0 mapped at address 0xffffb7201000.
> > length: 691200 offset: 229376 timestamp type/source: mono/EoF
> > Buffer 7/0 mapped at address 0xffffb7158000.
> > Unable to start streaming: Broken pipe (32).
> > 8 buffers released.
> > pofbqvttib 0
> > 0;root@arm64:~
> > echo maubyyzesr $$; yavta --set-control '0x009f0903 0' /dev/v4l-subdev1; echo dzbvegabvy $?
> > arm64 ~ # echo maubyyzesr $$; yavta --set-control '0x009f0903 0' /dev/v4l-subdev1; echo dzbvegabvy $?
> >
> > maubyyzesr 403
> > Device /dev/v4l-subdev1 opened.
> > Control 0x009f0903 set to 0, is 0
> > Unable to get format: Inappropriate ioctl for device (25).
> > dzbvegabvy 0
> > 0;root@arm64:~
> > echo pffcsadwlt $$; test -e /tmp/vin-capture/cvbs-solid-000007.bin; echo xilwxnvrrd $?
> > arm64 ~ # echo pffcsadwlt $$; test -e /tmp/vin-capture/cvbs-solid-000007.bin; echo xilwxnvrrd $?
> >
> > pffcsadwlt 403
> > xilwxnvrrd 1
> > echo grglvpwocj $$; grep -l 'adv748x 4-0070 hdmi' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo hvcawnkqdt $?
> > 0;root@arm64:~
> > arm64 ~ # echo grglvpwocj $$; grep -l 'adv748x 4-0070 hdmi' /sys/class/video4linux/*/name | sed 's#.*video4linux\(.*\)/name#/dev\1#g'; echo hvcawnkqdt $?
> >
> > grglvpwocj 403
> > /dev/v4l-subdev4
> > hvcawnkqdt 0
> > echo nnpccbuzak $$; media-ctl -d /dev/media0 -r; echo zigvuehatt $?
> > 0;root@arm64:~
> > arm64 ~ # echo nnpccbuzak $$; media-ctl -d /dev/media0 -r; echo zigvuehatt $?
> >
> > nnpccbuzak 403
> > zigvuehatt 0
> > echo xyngygxuyr $$; media-ctl -d /dev/media0 -l "'adv748x 4-0070 hdmi':1 -> 'adv748x 4-0070 txa':0 [1]"; echo oknofsbyvn $?
> > 0;root@arm64:~
> > arm64 ~ # echo xyngygxuyr $$; media-ctl -d /dev/media0 -l "'adv748x 4-0070 hdmi':1 -> 'adv748x 4-0070 txa':0 [1]"; echo oknofsbyvn $?
> >
> > xyngygxuyr 403
> > oknofsbyvn 0
> > 0;root@arm64:~
> > echo jkzuanypyp $$; media-ctl -d /dev/media0 -l "'rcar_csi2 feaa0000.csi2':1 -> 'VIN0 output':0 [1]"; echo onsaxggllz $?
> > arm64 ~ # echo jkzuanypyp $$; media-ctl -d /dev/media0 -l "'rcar_csi2 feaa0000.csi2':1 -> 'VIN0 output':0 [1]"; echo onsaxggllz $?
> >
> > jkzuanypyp 403
> > onsaxggllz 0
> > 0;root@arm64:~
> > echo lttzkqwwoa $$; media-ctl -d /dev/media0 --get-v4l2 "'adv748x 4-0070 hdmi':1"; echo imxtuqbxgf $?
> > arm64 ~ # echo lttzkqwwoa $$; media-ctl -d /dev/media0 --get-v4l2 "'adv748x 4-0070 hdmi':1"; echo imxtuqbxgf $?
> >
> > lttzkqwwoa 403
> > 		[stream:0 fmt:RGB888_1X24/1280x720 field:none colorspace:srgb]
> > imxtuqbxgf 0
> > 0;root@arm64:~
> > echo degzwngmzk $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 hdmi':1 [fmt:RGB888_1X24/1280x720 field:none]"; echo vgqpdhbhjt $?
> > arm64 ~ # echo degzwngmzk $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 hdmi':1 [fmt:RGB888_1X24/1280x720 field:none]"; echo vgqpdhbhjt $?
> >
> > degzwngmzk 403
> > vgqpdhbhjt 0
> > 0;root@arm64:~
> > echo iwtingcfbz $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 txa':0 [fmt:RGB888_1X24/1280x720 field:none]"; echo qircbjupbq $?
> > arm64 ~ # echo iwtingcfbz $$; media-ctl -d /dev/media0 -V "'adv748x 4-0070 txa':0 [fmt:RGB888_1X24/1280x720 field:none]"; echo qircbjupbq $?
> >
> > iwtingcfbz 403
> > qircbjupbq 0
> > 0;root@arm64:~
> > echo twrjqisqff $$; media-ctl -d /dev/media0 -V "'rcar_csi2 feaa0000.csi2':1 [fmt:RGB888_1X24/1280x720 field:none]"; echo ocaivovrxk $?
> > arm64 ~ # echo twrjqisqff $$; media-ctl -d /dev/media0 -V "'rcar_csi2 feaa0000.csi2':1 [fmt:RGB888_1X24/1280x720 field:none]"; echo ocaivovrxk $?
> >
> > twrjqisqff 403
> > ocaivovrxk 0
> > echo ajqwydmzik $$; yavta -f RGB565 -s 1280x720 --field none /dev/video0; echo fayawxvllj $?
> > 0;root@arm64:~
> > arm64 ~ # echo ajqwydmzik $$; yavta -f RGB565 -s 1280x720 --field none /dev/video0; echo fayawxvllj $?
> >
> > ajqwydmzik 403
> > Device /dev/video0 opened.
> > Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
> > Video format set: RGB565 (50424752) 1280x720 (stride 2560) field none buffer size 1843200
> > Video format: RGB565 (50424752) 1280x720 (stride 2560) field none buffer size 1843200
> > fayawxvllj 0
> > echo pealtxybun $$; yavta --set-control '0x009f0903 1' /dev/v4l-subdev4; echo juhrczaeao $?
> > 0;root@arm64:~
> > arm64 ~ # echo pealtxybun $$; yavta --set-control '0x009f0903 1' /dev/v4l-subdev4; echo juhrczaeao $?
> >
> > pealtxybun 403
> > Device /dev/v4l-subdev4 opened.
> > Control 0x009f0903 set to 1, is 1
> > Unable to get format: Inappropriate ioctl for device (25).
> > juhrczaeao 0
> > 0;root@arm64:~
> > echo oaxoraqdid $$; yavta -c10 --file=/tmp/vin-capture/hdmi-solid-#.bin /dev/video0; echo bfsxvmqitj $?
> > arm64 ~ # echo oaxoraqdid $$; yavta -c10 --file=/tmp/vin-capture/hdmi-solid-#.bin /dev/video0; echo bfsxvmqitj $?
> >
> > oaxoraqdid 403
> > Device /dev/video0 opened.
> > Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
> > Video format: RGB565 (50424752) 1280x720 (stride 2560) field none buffer size 1843200
> > 8 buffers requested.
> > length: 1843200 offset: 0 timestamp type/source: mono/EoF
> > Buffer 0/0 mapped at address 0xffffafa8e000.
> > length: 1843200 offset: 32768 timestamp type/source: mono/EoF
> > Buffer 1/0 mapped at address 0xffffaf8cc000.
> > length: 1843200 offset: 65536 timestamp type/source: mono/EoF
> > Buffer 2/0 mapped at address 0xffffaf70a000.
> > length: 1843200 offset: 98304 timestamp type/source: mono/EoF
> > Buffer 3/0 mapped at address 0xffffaf548000.
> > length: 1843200 offset: 131072 timestamp type/source: mono/EoF
> > Buffer 4/0 mapped at address 0xffffaf386000.
> > length: 1843200 offset: 163840 timestamp type/source: mono/EoF
> > Buffer 5/0 mapped at address 0xffffaf1c4000.
> > length: 1843200 offset: 196608 timestamp type/source: mono/EoF
> > Buffer 6/0 mapped at address 0xffffaf002000.
> > length: 1843200 offset: 229376 timestamp type/source: mono/EoF
> > Buffer 7/0 mapped at address 0xffffaee40000.
> > Unable to start streaming: Broken pipe (32).
> > 8 buffers released.
> > bfsxvmqitj 0
> > echo pmbwbnrkkw $$; yavta --set-control '0x009f0903 2' /dev/v4l-subdev4; echo ucgivtjwvw $?
> > 0;root@arm64:~
> > arm64 ~ # echo pmbwbnrkkw $$; yavta --set-control '0x009f0903 2' /dev/v4l-subdev4; echo ucgivtjwvw $?
> >
> > pmbwbnrkkw 403
> > Device /dev/v4l-subdev4 opened.
> > Control 0x009f0903 set to 2, is 2
> > Unable to get format: Inappropriate ioctl for device (25).
> > ucgivtjwvw 0
> > 0;root@arm64:~
> > echo rvkbtaiuan $$; yavta -c10 --file=/tmp/vin-capture/hdmi-colorbars-#.bin /dev/video0; echo fdlcrvrylc $?
> > arm64 ~ # echo rvkbtaiuan $$; yavta -c10 --file=/tmp/vin-capture/hdmi-colorbars-#.bin /dev/video0; echo fdlcrvrylc $?
> >
> > rvkbtaiuan 403
> > Device /dev/video0 opened.
> > Device `R_Car_VIN' on `platform:e6ef0000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
> > Video format: RGB565 (50424752) 1280x720 (stride 2560) field none buffer size 1843200
> > 8 buffers requested.
> > length: 1843200 offset: 0 timestamp type/source: mono/EoF
> > Buffer 0/0 mapped at address 0xffff86f8e000.
> > length: 1843200 offset: 32768 timestamp type/source: mono/EoF
> > Buffer 1/0 mapped at address 0xffff86dcc000.
> > length: 1843200 offset: 65536 timestamp type/source: mono/EoF
> > Buffer 2/0 mapped at address 0xffff86c0a000.
> > length: 1843200 offset: 98304 timestamp type/source: mono/EoF
> > Buffer 3/0 mapped at address 0xffff86a48000.
> > length: 1843200 offset: 131072 timestamp type/source: mono/EoF
> > Buffer 4/0 mapped at address 0xffff86886000.
> > length: 1843200 offset: 163840 timestamp type/source: mono/EoF
> > Buffer 5/0 mapped at address 0xffff866c4000.
> > length: 1843200 offset: 196608 timestamp type/source: mono/EoF
> > Buffer 6/0 mapped at address 0xffff86502000.
> > length: 1843200 offset: 229376 timestamp type/source: mono/EoF
> > Buffer 7/0 mapped at address 0xffff86340000.
> > Unable to start streaming: Broken pipe (32).
> > 8 buffers released.
> > fdlcrvrylc 0
> > 0;root@arm64:~
> > echo hrgnrsupul $$; yavta --set-control '0x009f0903 0' /dev/v4l-subdev4; echo bvgysmcxve $?
> > arm64 ~ # echo hrgnrsupul $$; yavta --set-control '0x009f0903 0' /dev/v4l-subdev4; echo bvgysmcxve $?
> >
> > hrgnrsupul 403
> > Device /dev/v4l-subdev4 opened.
> > Control 0x009f0903 set to 0, is 0
> > Unable to get format: Inappropriate ioctl for device (25).
> > bvgysmcxve 0
> > echo znlqovrrra $$; test -e /tmp/vin-capture/hdmi-solid-000007.bin; echo sjpcuiptaf $?
> > 0;root@arm64:~
> > arm64 ~ # echo znlqovrrra $$; test -e /tmp/vin-capture/hdmi-solid-000007.bin; echo sjpcuiptaf $?
> >
> > znlqovrrra 403
> > sjpcuiptaf 1
> > exit
> > ===> end <===
> >
> > >
> > > Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
> > > ---
> > >  drivers/media/platform/renesas/rcar-csi2.c | 138 +++++++++++----------
> > >  1 file changed, 75 insertions(+), 63 deletions(-)
> > >
> > > diff --git a/drivers/media/platform/renesas/rcar-csi2.c b/drivers/media/platform/renesas/rcar-csi2.c
> > > index 2d464e43a5be..4d4dfb59b025 100644
> > > --- a/drivers/media/platform/renesas/rcar-csi2.c
> > > +++ b/drivers/media/platform/renesas/rcar-csi2.c
> > > @@ -587,7 +587,8 @@ enum rcar_csi2_pads {
> > >  struct rcar_csi2_info {
> > >  	int (*init_phtw)(struct rcar_csi2 *priv, unsigned int mbps);
> > >  	int (*phy_post_init)(struct rcar_csi2 *priv);
> > > -	int (*start_receiver)(struct rcar_csi2 *priv);
> > > +	int (*start_receiver)(struct rcar_csi2 *priv,
> > > +			      struct v4l2_subdev_state *state);
> > >  	void (*enter_standby)(struct rcar_csi2 *priv);
> > >  	const struct rcsi2_mbps_reg *hsfreqrange;
> > >  	unsigned int csi0clkfreqrange;
> > > @@ -613,8 +614,6 @@ struct rcar_csi2 {
> > >
> > >  	int channel_vc[4];
> > >
> > > -	struct mutex lock; /* Protects mf and stream_count. */
> > > -	struct v4l2_mbus_framefmt mf;
> > >  	int stream_count;
> > >
> > >  	bool cphy;
> > > @@ -808,20 +807,25 @@ static int rcsi2_get_active_lanes(struct rcar_csi2 *priv,
> > >  	return 0;
> > >  }
> > >
> > > -static int rcsi2_start_receiver_gen3(struct rcar_csi2 *priv)
> > > +static int rcsi2_start_receiver_gen3(struct rcar_csi2 *priv,
> > > +				     struct v4l2_subdev_state *state)
> > >  {
> > >  	const struct rcar_csi2_format *format;
> > >  	u32 phycnt, vcdt = 0, vcdt2 = 0, fld = 0;
> > > +	struct v4l2_mbus_framefmt *fmt;
> > >  	unsigned int lanes;
> > >  	unsigned int i;
> > >  	int mbps, ret;
> > >
> > > +	/* Use the format on the sink pad to compute the receiver config. */
> > > +	fmt = v4l2_subdev_state_get_format(state, RCAR_CSI2_SINK);
> > > +
> > >  	dev_dbg(priv->dev, "Input size (%ux%u%c)\n",
> > > -		priv->mf.width, priv->mf.height,
> > > -		priv->mf.field == V4L2_FIELD_NONE ? 'p' : 'i');
> > > +		fmt->width, fmt->height,
> > > +		fmt->field == V4L2_FIELD_NONE ? 'p' : 'i');
> > >
> > >  	/* Code is validated in set_fmt. */
> > > -	format = rcsi2_code_to_fmt(priv->mf.code);
> > > +	format = rcsi2_code_to_fmt(fmt->code);
> > >  	if (!format)
> > >  		return -EINVAL;
> > >
> > > @@ -849,11 +853,11 @@ static int rcsi2_start_receiver_gen3(struct rcar_csi2 *priv)
> > >  			vcdt2 |= vcdt_part << ((i % 2) * 16);
> > >  	}
> > >
> > > -	if (priv->mf.field == V4L2_FIELD_ALTERNATE) {
> > > +	if (fmt->field == V4L2_FIELD_ALTERNATE) {
> > >  		fld = FLD_DET_SEL(1) | FLD_FLD_EN4 | FLD_FLD_EN3 | FLD_FLD_EN2
> > >  			| FLD_FLD_EN;
> > >
> > > -		if (priv->mf.height == 240)
> > > +		if (fmt->height == 240)
> > >  			fld |= FLD_FLD_NUM(0);
> > >  		else
> > >  			fld |= FLD_FLD_NUM(1);
> > > @@ -1049,15 +1053,18 @@ static int rcsi2_c_phy_setting_v4h(struct rcar_csi2 *priv, int msps)
> > >  	return 0;
> > >  }
> > >
> > > -static int rcsi2_start_receiver_v4h(struct rcar_csi2 *priv)
> > > +static int rcsi2_start_receiver_v4h(struct rcar_csi2 *priv,
> > > +				    struct v4l2_subdev_state *state)
> > >  {
> > >  	const struct rcar_csi2_format *format;
> > > +	struct v4l2_mbus_framefmt *fmt;
> > >  	unsigned int lanes;
> > >  	int msps;
> > >  	int ret;
> > >
> > > -	/* Calculate parameters */
> > > -	format = rcsi2_code_to_fmt(priv->mf.code);
> > > +	/* Use the format on the sink pad to compute the receiver config. */
> > > +	fmt = v4l2_subdev_state_get_format(state, RCAR_CSI2_SINK);
> > > +	format = rcsi2_code_to_fmt(fmt->code);
> > >  	if (!format)
> > >  		return -EINVAL;
> > >
> > > @@ -1114,7 +1121,7 @@ static int rcsi2_start_receiver_v4h(struct rcar_csi2 *priv)
> > >  	return 0;
> > >  }
> > >
> > > -static int rcsi2_start(struct rcar_csi2 *priv)
> > > +static int rcsi2_start(struct rcar_csi2 *priv, struct v4l2_subdev_state *state)
> > >  {
> > >  	int ret;
> > >
> > > @@ -1122,7 +1129,7 @@ static int rcsi2_start(struct rcar_csi2 *priv)
> > >  	if (ret < 0)
> > >  		return ret;
> > >
> > > -	ret = priv->info->start_receiver(priv);
> > > +	ret = priv->info->start_receiver(priv, state);
> > >  	if (ret) {
> > >  		rcsi2_enter_standby(priv);
> > >  		return ret;
> > > @@ -1146,17 +1153,16 @@ static void rcsi2_stop(struct rcar_csi2 *priv)
> > >  static int rcsi2_s_stream(struct v4l2_subdev *sd, int enable)
> > >  {
> > >  	struct rcar_csi2 *priv = sd_to_csi2(sd);
> > > +	struct v4l2_subdev_state *state;
> > >  	int ret = 0;
> > >
> > > -	mutex_lock(&priv->lock);
> > > +	if (!priv->remote)
> > > +		return -ENODEV;
> > >
> > > -	if (!priv->remote) {
> > > -		ret = -ENODEV;
> > > -		goto out;
> > > -	}
> > > +	state = v4l2_subdev_lock_and_get_active_state(&priv->subdev);
> > >
> > >  	if (enable && priv->stream_count == 0) {
> > > -		ret = rcsi2_start(priv);
> > > +		ret = rcsi2_start(priv, state);
> > >  		if (ret)
> > >  			goto out;
> > >  	} else if (!enable && priv->stream_count == 1) {
> > > @@ -1165,49 +1171,26 @@ static int rcsi2_s_stream(struct v4l2_subdev *sd, int enable)
> > >
> > >  	priv->stream_count += enable ? 1 : -1;
> > >  out:
> > > -	mutex_unlock(&priv->lock);
> > > +	v4l2_subdev_unlock_state(state);
> > >
> > >  	return ret;
> > >  }
> > >
> > >  static int rcsi2_set_pad_format(struct v4l2_subdev *sd,
> > > -				struct v4l2_subdev_state *sd_state,
> > > +				struct v4l2_subdev_state *state,
> > >  				struct v4l2_subdev_format *format)
> > >  {
> > > -	struct rcar_csi2 *priv = sd_to_csi2(sd);
> > > -	struct v4l2_mbus_framefmt *framefmt;
> > > -
> > > -	mutex_lock(&priv->lock);
> > > +	if (format->pad > RCAR_CSI2_SINK)
> > > +		return v4l2_subdev_get_fmt(sd, state, format);
> > >
> > >  	if (!rcsi2_code_to_fmt(format->format.code))
> > >  		format->format.code = rcar_csi2_formats[0].code;
> > >
> > > -	if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
> > > -		priv->mf = format->format;
> > > -	} else {
> > > -		framefmt = v4l2_subdev_state_get_format(sd_state, 0);
> > > -		*framefmt = format->format;
> > > -	}
> > > -
> > > -	mutex_unlock(&priv->lock);
> > > -
> > > -	return 0;
> > > -}
> > > -
> > > -static int rcsi2_get_pad_format(struct v4l2_subdev *sd,
> > > -				struct v4l2_subdev_state *sd_state,
> > > -				struct v4l2_subdev_format *format)
> > > -{
> > > -	struct rcar_csi2 *priv = sd_to_csi2(sd);
> > > -
> > > -	mutex_lock(&priv->lock);
> > > -
> > > -	if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
> > > -		format->format = priv->mf;
> > > -	else
> > > -		format->format = *v4l2_subdev_state_get_format(sd_state, 0);
> > > +	*v4l2_subdev_state_get_format(state, format->pad) = format->format;
> > >
> > > -	mutex_unlock(&priv->lock);
> > > +	/* Propagate the format to the source pads. */
> > > +	for (unsigned int i = RCAR_CSI2_SOURCE_VC0; i < NR_OF_RCAR_CSI2_PAD; i++)
> > > +		*v4l2_subdev_state_get_format(state, i) = format->format;
> > >
> > >  	return 0;
> > >  }
> > > @@ -1218,7 +1201,7 @@ static const struct v4l2_subdev_video_ops rcar_csi2_video_ops = {
> > >
> > >  static const struct v4l2_subdev_pad_ops rcar_csi2_pad_ops = {
> > >  	.set_fmt = rcsi2_set_pad_format,
> > > -	.get_fmt = rcsi2_get_pad_format,
> > > +	.get_fmt = v4l2_subdev_get_fmt,
> > >  };
> > >
> > >  static const struct v4l2_subdev_ops rcar_csi2_subdev_ops = {
> > > @@ -1226,6 +1209,30 @@ static const struct v4l2_subdev_ops rcar_csi2_subdev_ops = {
> > >  	.pad	= &rcar_csi2_pad_ops,
> > >  };
> > >
> > > +static int rcsi2_init_state(struct v4l2_subdev *sd,
> > > +			    struct v4l2_subdev_state *state)
> > > +{
> > > +	static const struct v4l2_mbus_framefmt rcar_csi2_default_fmt = {
> > > +		.width		= 1920,
> > > +		.height		= 1080,
> > > +		.code		= MEDIA_BUS_FMT_RGB888_1X24,
> > > +		.colorspace	= V4L2_COLORSPACE_SRGB,
> > > +		.field		= V4L2_FIELD_NONE,
> > > +		.ycbcr_enc	= V4L2_YCBCR_ENC_DEFAULT,
> > > +		.quantization	= V4L2_QUANTIZATION_DEFAULT,
> > > +		.xfer_func	= V4L2_XFER_FUNC_DEFAULT,
> > > +	};
> > > +
> > > +	for (unsigned int i = RCAR_CSI2_SINK; i < NR_OF_RCAR_CSI2_PAD; i++)
> > > +		*v4l2_subdev_state_get_format(state, i) = rcar_csi2_default_fmt;
> > > +
> > > +	return 0;
> > > +}
> > > +
> > > +static const struct v4l2_subdev_internal_ops rcar_csi2_internal_ops = {
> > > +	.init_state = rcsi2_init_state,
> > > +};
> > > +
> > >  static irqreturn_t rcsi2_irq(int irq, void *data)
> > >  {
> > >  	struct rcar_csi2 *priv = data;
> > > @@ -1251,14 +1258,17 @@ static irqreturn_t rcsi2_irq(int irq, void *data)
> > >
> > >  static irqreturn_t rcsi2_irq_thread(int irq, void *data)
> > >  {
> > > +	struct v4l2_subdev_state *state;
> > >  	struct rcar_csi2 *priv = data;
> > >
> > > -	mutex_lock(&priv->lock);
> > > +	state = v4l2_subdev_lock_and_get_active_state(&priv->subdev);
> > > +
> > >  	rcsi2_stop(priv);
> > >  	usleep_range(1000, 2000);
> > > -	if (rcsi2_start(priv))
> > > +	if (rcsi2_start(priv, state))
> > >  		dev_warn(priv->dev, "Failed to restart CSI-2 receiver\n");
> > > -	mutex_unlock(&priv->lock);
> > > +
> > > +	v4l2_subdev_unlock_state(state);
> > >
> > >  	return IRQ_HANDLED;
> > >  }
> > > @@ -1870,23 +1880,23 @@ static int rcsi2_probe(struct platform_device *pdev)
> > >
> > >  	priv->dev = &pdev->dev;
> > >
> > > -	mutex_init(&priv->lock);
> > >  	priv->stream_count = 0;
> > >
> > >  	ret = rcsi2_probe_resources(priv, pdev);
> > >  	if (ret) {
> > >  		dev_err(priv->dev, "Failed to get resources\n");
> > > -		goto error_mutex;
> > > +		return ret;
> > >  	}
> > >
> > >  	platform_set_drvdata(pdev, priv);
> > >
> > >  	ret = rcsi2_parse_dt(priv);
> > >  	if (ret)
> > > -		goto error_mutex;
> > > +		return ret;
> > >
> > >  	priv->subdev.owner = THIS_MODULE;
> > >  	priv->subdev.dev = &pdev->dev;
> > > +	priv->subdev.internal_ops = &rcar_csi2_internal_ops;
> > >  	v4l2_subdev_init(&priv->subdev, &rcar_csi2_subdev_ops);
> > >  	v4l2_set_subdevdata(&priv->subdev, &pdev->dev);
> > >  	snprintf(priv->subdev.name, sizeof(priv->subdev.name), "%s %s",
> > > @@ -1912,21 +1922,25 @@ static int rcsi2_probe(struct platform_device *pdev)
> > >
> > >  	pm_runtime_enable(&pdev->dev);
> > >
> > > +	ret = v4l2_subdev_init_finalize(&priv->subdev);
> > > +	if (ret)
> > > +		goto error_pm_runtime;
> > > +
> > >  	ret = v4l2_async_register_subdev(&priv->subdev);
> > >  	if (ret < 0)
> > > -		goto error_pm_runtime;
> > > +		goto error_subdev;
> > >
> > >  	dev_info(priv->dev, "%d lanes found\n", priv->lanes);
> > >
> > >  	return 0;
> > >
> > > +error_subdev:
> > > +	v4l2_subdev_cleanup(&priv->subdev);
> > >  error_pm_runtime:
> > >  	pm_runtime_disable(&pdev->dev);
> > >  error_async:
> > >  	v4l2_async_nf_unregister(&priv->notifier);
> > >  	v4l2_async_nf_cleanup(&priv->notifier);
> > > -error_mutex:
> > > -	mutex_destroy(&priv->lock);
> > >
> > >  	return ret;
> > >  }
> > > @@ -1941,8 +1955,6 @@ static void rcsi2_remove(struct platform_device *pdev)
> > >  	v4l2_subdev_cleanup(&priv->subdev);
> > >
> > >  	pm_runtime_disable(&pdev->dev);
> > > -
> > > -	mutex_destroy(&priv->lock);
> > >  }
> > >
> > >  static struct platform_driver rcar_csi2_pdrv = {
> > > --
> > > 2.44.0
> > >
> >
> > --
> > Kind Regards,
> > Niklas Söderlund

[04/11] media: rcar-csi2: Use the subdev active state

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