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The datasheet clearly states that all but a few registers can't be modified when the device is running. Programming the intensity parameters in the control set handler is thus prohibited. Program it when starting the module instead. This requires storing the intensity value internally as the module can be started from the frame completion interrupt handler, and accessing control values requires taking a mutex. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
43 lines
1002 B
C
43 lines
1002 B
C
/*
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* vsp1_sru.h -- R-Car VSP1 Super Resolution Unit
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*
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* Copyright (C) 2013 Renesas Corporation
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*
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* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef __VSP1_SRU_H__
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#define __VSP1_SRU_H__
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#include <media/media-entity.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-subdev.h>
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#include "vsp1_entity.h"
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struct vsp1_device;
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#define SRU_PAD_SINK 0
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#define SRU_PAD_SOURCE 1
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struct vsp1_sru {
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struct vsp1_entity entity;
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struct v4l2_ctrl_handler ctrls;
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unsigned int intensity;
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};
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static inline struct vsp1_sru *to_sru(struct v4l2_subdev *subdev)
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{
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return container_of(subdev, struct vsp1_sru, entity.subdev);
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}
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struct vsp1_sru *vsp1_sru_create(struct vsp1_device *vsp1);
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#endif /* __VSP1_SRU_H__ */
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