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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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6c1dedf805
Add a function to perform soft reset of the FCP. It is intended to support the correct stop procedure of the VSPX-FCPVX and VSPD-FCPD pairs according to section "62.3.7.3 Reset Operation" of the R-Car Hardware Manual at revision 1.20. Signed-off-by: Jacopo Mondi <jacopo.mondi+renesas@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Link: https://lore.kernel.org/r/20250616-vspx-reset-v2-1-6cc12ed7e9bb@ideasonboard.com Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* rcar-fcp.h -- R-Car Frame Compression Processor Driver
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*
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* Copyright (C) 2016 Renesas Electronics Corporation
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*
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* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
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*/
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#ifndef __MEDIA_RCAR_FCP_H__
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#define __MEDIA_RCAR_FCP_H__
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struct device_node;
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struct rcar_fcp_device;
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#if IS_ENABLED(CONFIG_VIDEO_RENESAS_FCP)
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struct rcar_fcp_device *rcar_fcp_get(const struct device_node *np);
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void rcar_fcp_put(struct rcar_fcp_device *fcp);
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struct device *rcar_fcp_get_device(struct rcar_fcp_device *fcp);
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int rcar_fcp_enable(struct rcar_fcp_device *fcp);
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void rcar_fcp_disable(struct rcar_fcp_device *fcp);
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int rcar_fcp_soft_reset(struct rcar_fcp_device *fcp);
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#else
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static inline struct rcar_fcp_device *rcar_fcp_get(const struct device_node *np)
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{
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return ERR_PTR(-ENOENT);
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}
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static inline void rcar_fcp_put(struct rcar_fcp_device *fcp) { }
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static inline struct device *rcar_fcp_get_device(struct rcar_fcp_device *fcp)
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{
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return NULL;
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}
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static inline int rcar_fcp_enable(struct rcar_fcp_device *fcp)
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{
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return 0;
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}
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static inline void rcar_fcp_disable(struct rcar_fcp_device *fcp) { }
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static inline int rcar_fcp_soft_reset(struct rcar_fcp_device *fcp)
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{
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return 0;
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}
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#endif
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#endif /* __MEDIA_RCAR_FCP_H__ */
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