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usb: gadget: uvc: prepare buffer with data offset for rockchip platform

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For some Rockchip platforms (e.g. RV1106 UVC), it needs to
get the offset in the plane which used for the start of data
in the uvc buffer.

Signed-off-by: William Wu <william.wu@rock-chips.com>
Change-Id: I0144709f33b1d3ca955779be487134901468923f
This commit is contained in:
William Wu
2022-04-23 11:02:28 +08:00
committed by Tao Huang
parent f93c20fa43
commit b0cf5382ef
1 changed files with 4 additions and 0 deletions
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4
drivers/usb/gadget/function/uvc_queue.c
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@@ -70,7 +70,11 @@ static int uvc_buffer_prepare(struct vb2_buffer *vb)
return -ENODEV;
buf->state = UVC_BUF_STATE_QUEUED;
#ifdef CONFIG_ARCH_ROCKCHIP
buf->mem = vb2_plane_vaddr(vb, 0) + vb2_plane_data_offset(vb, 0);
#else
buf->mem = vb2_plane_vaddr(vb, 0);
#endif
buf->length = vb2_plane_size(vb, 0);
if (vb->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
buf->bytesused = 0;