@@ -899,6 +899,11 @@ 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, pipe->default_run_mode);
+
return 0;
css_error:
@@ -1164,23 +1164,28 @@ static int isp_subdev_init_entities(struct atomisp_sub_device *asd)
atomisp_init_acc_pipe(asd, &asd->video_acc);
- ret = atomisp_video_init(&asd->video_in, "MEMORY");
+ ret = atomisp_video_init(&asd->video_in, "MEMORY",
+ ATOMISP_RUN_MODE_SDV);
if (ret < 0)
return ret;
- ret = atomisp_video_init(&asd->video_out_capture, "CAPTURE");
+ ret = atomisp_video_init(&asd->video_out_capture, "CAPTURE",
+ ATOMISP_RUN_MODE_STILL_CAPTURE);
if (ret < 0)
return ret;
- ret = atomisp_video_init(&asd->video_out_vf, "VIEWFINDER");
+ ret = atomisp_video_init(&asd->video_out_vf, "VIEWFINDER",
+ ATOMISP_RUN_MODE_CONTINUOUS_CAPTURE);
if (ret < 0)
return ret;
- ret = atomisp_video_init(&asd->video_out_preview, "PREVIEW");
+ ret = atomisp_video_init(&asd->video_out_preview, "PREVIEW",
+ ATOMISP_RUN_MODE_PREVIEW);
if (ret < 0)
return ret;
- ret = atomisp_video_init(&asd->video_out_video_capture, "VIDEO");
+ ret = atomisp_video_init(&asd->video_out_video_capture, "VIDEO",
+ ATOMISP_RUN_MODE_VIDEO);
if (ret < 0)
return ret;
@@ -81,6 +81,9 @@ struct atomisp_video_pipe {
/* the link list to store per_frame parameters */
struct list_head per_frame_params;
+ /* Store here the initial run mode */
+ unsigned int default_run_mode;
+
unsigned int buffers_in_css;
/* irq_lock is used to protect video buffer state change operations and
@@ -447,7 +447,8 @@ const struct atomisp_dfs_config dfs_config_cht_soc = {
.dfs_table_size = ARRAY_SIZE(dfs_rules_cht_soc),
};
-int atomisp_video_init(struct atomisp_video_pipe *video, const char *name)
+int atomisp_video_init(struct atomisp_video_pipe *video, const char *name,
+ unsigned int run_mode)
{
int ret;
const char *direction;
@@ -478,6 +479,7 @@ int atomisp_video_init(struct atomisp_video_pipe *video, const char *name)
"ATOMISP ISP %s %s", name, direction);
video->vdev.release = video_device_release_empty;
video_set_drvdata(&video->vdev, video->isp);
+ video->default_run_mode = run_mode;
return 0;
}
@@ -27,7 +27,8 @@ struct v4l2_device;
struct atomisp_device;
struct firmware;
-int atomisp_video_init(struct atomisp_video_pipe *video, const char *name);
+int atomisp_video_init(struct atomisp_video_pipe *video, const char *name,
+ unsigned int run_mode);
void atomisp_acc_init(struct atomisp_acc_pipe *video, const char *name);
void atomisp_video_unregister(struct atomisp_video_pipe *video);
void atomisp_acc_unregister(struct atomisp_acc_pipe *video);
The atomisp driver originally used the s_parm command to initialize the run_mode type to the driver. So, before start setting up the streaming, s_parm should be called. So, even having 5 "normal" video devices, one meant to be used for each type, the run_mode was actually selected when s_parm is called. Without setting the run mode, 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 However, commit 8a7c5594c020 ("media: v4l2-ioctl: clear fields in s_parm") broke support for it, with a good reason, as drivers shoudn't be extending the API for their own purposes. 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 on preview mode (/dev/video2): $ v4l2grab -f YUYV -x 1600 -y 1200 -d /dev/video2 -n 1 -u $ feh out000.pnm So, let's just setup the default run_mode that each video devnode should assume, setting it at open() time. Reported-by: Tsuchiya Yuto <kitakar@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> --- To mailbombing on a large number of people, only mailing lists were C/C on the cover. See [PATCH 0/2] at: https://lore.kernel.org/all/cover.1636200095.git.mchehab+huawei@kernel.org/ drivers/staging/media/atomisp/pci/atomisp_fops.c | 5 +++++ .../staging/media/atomisp/pci/atomisp_subdev.c | 15 ++++++++++----- .../staging/media/atomisp/pci/atomisp_subdev.h | 3 +++ drivers/staging/media/atomisp/pci/atomisp_v4l2.c | 4 +++- drivers/staging/media/atomisp/pci/atomisp_v4l2.h | 3 ++- 5 files changed, 23 insertions(+), 7 deletions(-)