forked from Minki/linux
99 lines
2.7 KiB
C
99 lines
2.7 KiB
C
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/*
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* Copyright (C) 2017 Icenowy Zheng <icenowy@aosc.io>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*/
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#ifndef _SUNXI_ENGINE_H_
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#define _SUNXI_ENGINE_H_
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struct drm_plane;
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struct drm_device;
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struct sunxi_engine;
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struct sunxi_engine_ops {
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void (*commit)(struct sunxi_engine *engine);
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struct drm_plane **(*layers_init)(struct drm_device *drm,
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struct sunxi_engine *engine);
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void (*apply_color_correction)(struct sunxi_engine *engine);
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void (*disable_color_correction)(struct sunxi_engine *engine);
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};
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/**
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* struct sunxi_engine - the common parts of an engine for sun4i-drm driver
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* @ops: the operations of the engine
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* @node: the of device node of the engine
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* @regs: the regmap of the engine
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* @id: the id of the engine (-1 if not used)
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*/
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struct sunxi_engine {
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const struct sunxi_engine_ops *ops;
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struct device_node *node;
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struct regmap *regs;
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int id;
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/* Engine list management */
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struct list_head list;
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};
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/**
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* sunxi_engine_commit() - commit all changes of the engine
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* @engine: pointer to the engine
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*/
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static inline void
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sunxi_engine_commit(struct sunxi_engine *engine)
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{
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if (engine->ops && engine->ops->commit)
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engine->ops->commit(engine);
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}
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/**
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* sunxi_engine_layers_init() - Create planes (layers) for the engine
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* @drm: pointer to the drm_device for which planes will be created
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* @engine: pointer to the engine
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*/
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static inline struct drm_plane **
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sunxi_engine_layers_init(struct drm_device *drm, struct sunxi_engine *engine)
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{
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if (engine->ops && engine->ops->layers_init)
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return engine->ops->layers_init(drm, engine);
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return ERR_PTR(-ENOSYS);
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}
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/**
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* sunxi_engine_apply_color_correction - Apply the RGB2YUV color correction
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* @engine: pointer to the engine
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*
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* This functionality is optional for an engine, however, if the engine is
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* intended to be used with TV Encoder, the output will be incorrect
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* without the color correction, due to TV Encoder expects the engine to
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* output directly YUV signal.
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*/
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static inline void
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sunxi_engine_apply_color_correction(struct sunxi_engine *engine)
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{
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if (engine->ops && engine->ops->apply_color_correction)
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engine->ops->apply_color_correction(engine);
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}
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/**
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* sunxi_engine_disable_color_correction - Disable the color space correction
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* @engine: pointer to the engine
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*
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* This function is paired with apply_color_correction().
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*/
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static inline void
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sunxi_engine_disable_color_correction(struct sunxi_engine *engine)
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{
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if (engine->ops && engine->ops->disable_color_correction)
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engine->ops->disable_color_correction(engine);
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}
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#endif /* _SUNXI_ENGINE_H_ */
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