media: atomisp: Make it possible to call atomisp_set_fmt() without a file handle

To fix atomisp_queue_setup() sometimes failing it needs to be able to call
atomisp_set_fmt(), but atomisp_queue_setup() (VIDIOC_REQBUFS) does not get
passed a file handle by the videobuf2 core.

Partly revert commit b3be98f984d4 ("media: atomisp: Remove a couple of not
useful function wrappers") so that atomisp_set_fmt() can be used
without a file handle.
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/staging/media/atomisp/pci/atomisp_cmd.c

@@ -5095,9 +5095,8 @@ static int atomisp_set_fmt_to_snr(struct video_device *vdev,
 	return css_input_resolution_changed(asd, ffmt);
 }
 
-int atomisp_set_fmt(struct file *file, void *unused, struct v4l2_format *f)
+int atomisp_set_fmt(struct video_device *vdev, struct v4l2_format *f)
 {
-	struct video_device *vdev = video_devdata(file);
 	struct atomisp_device *isp = video_get_drvdata(vdev);
 	struct atomisp_video_pipe *pipe = atomisp_to_video_pipe(vdev);
 	struct atomisp_sub_device *asd = pipe->asd;

drivers/staging/media/atomisp/pci/atomisp_cmd.h

@@ -265,7 +265,7 @@ int atomisp_get_sensor_mode_data(struct atomisp_sub_device *asd,
 int atomisp_try_fmt(struct video_device *vdev, struct v4l2_pix_format *f,
 		    bool *res_overflow);
 
-int atomisp_set_fmt(struct file *file, void *fh, struct v4l2_format *f);
+int atomisp_set_fmt(struct video_device *vdev, struct v4l2_format *f);
 
 int atomisp_set_shading_table(struct atomisp_sub_device *asd,
 			      struct atomisp_shading_table *shading_table);

drivers/staging/media/atomisp/pci/atomisp_ioctl.c

@@ -665,6 +665,14 @@ static int atomisp_g_input(struct file *file, void *fh, unsigned int *input)
 	return 0;
 }
 
+static int atomisp_s_fmt_cap(struct file *file, void *fh,
+			     struct v4l2_format *f)
+{
+	struct video_device *vdev = video_devdata(file);
+
+	return atomisp_set_fmt(vdev, f);
+}
+
 /*
  * set input are used to set current primary/secondary camera
  */
@@ -2399,7 +2407,7 @@ const struct v4l2_ioctl_ops atomisp_ioctl_ops = {
 	.vidioc_enum_fmt_vid_cap = atomisp_enum_fmt_cap,
 	.vidioc_try_fmt_vid_cap = atomisp_try_fmt_cap,
 	.vidioc_g_fmt_vid_cap = atomisp_g_fmt_cap,
-	.vidioc_s_fmt_vid_cap = atomisp_set_fmt,
+	.vidioc_s_fmt_vid_cap = atomisp_s_fmt_cap,
 	.vidioc_reqbufs = vb2_ioctl_reqbufs,
 	.vidioc_querybuf = vb2_ioctl_querybuf,
 	.vidioc_qbuf = atomisp_qbuf_wrapper,