Messages in this thread Patch in this message | | | From | Mauro Carvalho Chehab <> | Subject | [PATCH 2/2] media: atomisp: set default mode | Date | Fri, 29 Oct 2021 09:49:36 +0100 |
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Without setting a default mode at open(), applications that don't call VIDIOC_SET_PARM with a custom atomisp parameters won't work, as the pipeline won't be set:
atomisp-isp2 0000:00:03.0: can't create streams atomisp-isp2 0000:00:03.0: __get_frame_info 1600x1200 (padded to 0) returned -22
So, as an step to allow generic apps to use this driver, put the device's run_mode in preview after open.
After this patch, using v4l2grab starts to work:
$ v4l2grab -D -f 'NV12' -x 1600 -y 1200 -d /dev/video2 -u $ nvt/raw2pnm -x1600 -y1200 -f NV12 out017.raw out017.pnm $ feh out017.pnm
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> --- drivers/staging/media/atomisp/pci/atomisp_fops.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/staging/media/atomisp/pci/atomisp_fops.c b/drivers/staging/media/atomisp/pci/atomisp_fops.c index 72cbdce2142a..7df982c80b1a 100644 --- a/drivers/staging/media/atomisp/pci/atomisp_fops.c +++ b/drivers/staging/media/atomisp/pci/atomisp_fops.c @@ -893,6 +893,11 @@ static int atomisp_open(struct file *file) else pipe->users++; rt_mutex_unlock(&isp->mutex); + + /* Ensure that a mode is set */ + if (asd) + v4l2_ctrl_s_ctrl(asd->run_mode, ATOMISP_RUN_MODE_PREVIEW); + return 0; css_error: -- 2.31.1
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