[PATCH v6 02/12] gpu: ipu-csi: Swap fields according to input/output field types

[Philipp Zabel]

On Tue, 2019-01-08 at 16:15 -0800, Steve Longerbeam wrote:
> The function ipu_csi_init_interface() was inverting the F-bit for
> NTSC case, in the CCIR_CODE_1/2 registers. The result being that
> for NTSC bottom-top field order, the CSI would swap fields and
> capture in top-bottom order.
> 
> Instead, base field swap on the field order of the input to the CSI,
> and the field order of the requested output. If the input/output
> fields are sequential but different, swap fields, otherwise do
> not swap. This requires passing both the input and output mbus
> frame formats to ipu_csi_init_interface().
> 
> Move this code to a new private function ipu_csi_set_bt_interlaced_codes()
> that programs the CCIR_CODE_1/2 registers for interlaced BT.656 (and
> possibly interlaced BT.1120 in the future).
> 
> When detecting input video standard from the input frame width/height,
> make sure to double height if input field type is alternate, since
> in that case input height only includes lines for one field.
> 
> Signed-off-by: Steve Longerbeam <slongerbeam at gmail.com>
> Reviewed-by: Philipp Zabel <p.zabel at pengutronix.de>

Also
Acked-by: Philipp Zabel <p.zabel at pengutronix.de>
to be merged via the media tree

regards
Philipp