Try reading on video device. If the camera bus driver supports reading
we can try it and return the result. Also add a debug line.
Signed-off-by: Anatolij Gustschin <agust@xxxxxxx>
---
drivers/media/platform/soc_camera.c | 9 ++++++++-
1 files changed, 8 insertions(+), 1 deletions(-)
diff --git a/drivers/media/platform/soc_camera.c b/drivers/media/platform/soc_camera.c
index 10b57f8..d591a42 100644
--- a/drivers/media/platform/soc_camera.c
+++ b/drivers/media/platform/soc_camera.c
@@ -645,9 +645,16 @@ static ssize_t soc_camera_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
struct soc_camera_device *icd = file->private_data;
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
int err = -EINVAL;
- dev_err(icd->pdev, "camera device read not implemented\n");
+ dev_dbg(icd->pdev, "read called, buf %p\n", buf);
+
+ if (ici->ops->init_videobuf2 && icd->vb2_vidq.io_modes & VB2_READ)
+ err = vb2_read(&icd->vb2_vidq, buf, count, ppos,
+ file->f_flags & O_NONBLOCK);
+ else
+ dev_err(icd->pdev, "camera device read not implemented\n");
return err;
}
--
1.7.1
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