mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-02 07:36:44 +07:00
8796933843
As we are going to add support for the Allwinner DE2 engine in sun4i-drm driver, we will finally have two types of display engines -- the DE1 backend and the DE2 mixer. They both do some display blending and feed graphics data to TCON, and is part of the "Display Engine" called by Allwinner, so I choose to call them both "engine" here. Abstract the engine type to a new struct with an ops struct, which contains functions that should be called outside the engine-specified code (in TCON, CRTC or TV Encoder code). In order to preserve bisectability, we also switch the backend and layer code in its own module. Signed-off-by: Icenowy Zheng <icenowy@aosc.io> Reviewed-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
99 lines
2.7 KiB
C
99 lines
2.7 KiB
C
/*
|
|
* Copyright (C) 2017 Icenowy Zheng <icenowy@aosc.io>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*/
|
|
|
|
#ifndef _SUNXI_ENGINE_H_
|
|
#define _SUNXI_ENGINE_H_
|
|
|
|
struct drm_plane;
|
|
struct drm_device;
|
|
|
|
struct sunxi_engine;
|
|
|
|
struct sunxi_engine_ops {
|
|
void (*commit)(struct sunxi_engine *engine);
|
|
struct drm_plane **(*layers_init)(struct drm_device *drm,
|
|
struct sunxi_engine *engine);
|
|
|
|
void (*apply_color_correction)(struct sunxi_engine *engine);
|
|
void (*disable_color_correction)(struct sunxi_engine *engine);
|
|
};
|
|
|
|
/**
|
|
* struct sunxi_engine - the common parts of an engine for sun4i-drm driver
|
|
* @ops: the operations of the engine
|
|
* @node: the of device node of the engine
|
|
* @regs: the regmap of the engine
|
|
* @id: the id of the engine (-1 if not used)
|
|
*/
|
|
struct sunxi_engine {
|
|
const struct sunxi_engine_ops *ops;
|
|
|
|
struct device_node *node;
|
|
struct regmap *regs;
|
|
|
|
int id;
|
|
|
|
/* Engine list management */
|
|
struct list_head list;
|
|
};
|
|
|
|
/**
|
|
* sunxi_engine_commit() - commit all changes of the engine
|
|
* @engine: pointer to the engine
|
|
*/
|
|
static inline void
|
|
sunxi_engine_commit(struct sunxi_engine *engine)
|
|
{
|
|
if (engine->ops && engine->ops->commit)
|
|
engine->ops->commit(engine);
|
|
}
|
|
|
|
/**
|
|
* sunxi_engine_layers_init() - Create planes (layers) for the engine
|
|
* @drm: pointer to the drm_device for which planes will be created
|
|
* @engine: pointer to the engine
|
|
*/
|
|
static inline struct drm_plane **
|
|
sunxi_engine_layers_init(struct drm_device *drm, struct sunxi_engine *engine)
|
|
{
|
|
if (engine->ops && engine->ops->layers_init)
|
|
return engine->ops->layers_init(drm, engine);
|
|
return ERR_PTR(-ENOSYS);
|
|
}
|
|
|
|
/**
|
|
* sunxi_engine_apply_color_correction - Apply the RGB2YUV color correction
|
|
* @engine: pointer to the engine
|
|
*
|
|
* This functionality is optional for an engine, however, if the engine is
|
|
* intended to be used with TV Encoder, the output will be incorrect
|
|
* without the color correction, due to TV Encoder expects the engine to
|
|
* output directly YUV signal.
|
|
*/
|
|
static inline void
|
|
sunxi_engine_apply_color_correction(struct sunxi_engine *engine)
|
|
{
|
|
if (engine->ops && engine->ops->apply_color_correction)
|
|
engine->ops->apply_color_correction(engine);
|
|
}
|
|
|
|
/**
|
|
* sunxi_engine_disable_color_correction - Disable the color space correction
|
|
* @engine: pointer to the engine
|
|
*
|
|
* This function is paired with apply_color_correction().
|
|
*/
|
|
static inline void
|
|
sunxi_engine_disable_color_correction(struct sunxi_engine *engine)
|
|
{
|
|
if (engine->ops && engine->ops->disable_color_correction)
|
|
engine->ops->disable_color_correction(engine);
|
|
}
|
|
#endif /* _SUNXI_ENGINE_H_ */
|