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media: rzg2l-cru: Add function pointer to check if FIFO is empty

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Add a `fifo_empty` function pointer to the `rzg2l_cru_info` structure and
pass it as part of the OF data. On RZ/G3E and RZ/V2H(P) SoCs, checking if
the FIFO is empty requires a different register configuration.

Implement `rzg2l_fifo_empty()` and update the code to use it from the
function pointer.

Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Link: https://lore.kernel.org/r/20250411170624.472257-16-tommaso.merciai.xr@bp.renesas.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
This commit is contained in:
Lad Prabhakar 2025-04-11 19:05:43 +02:00 • committed by Hans Verkuil
commit 446c645f7f
3 changed files with 20 additions and 7 deletions
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