| Icenowy Zheng | 8796933 | 2017-05-17 22:47:17 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2017 Icenowy Zheng <icenowy@aosc.io> |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License as |
| 6 | * published by the Free Software Foundation; either version 2 of |
| 7 | * the License, or (at your option) any later version. |
| 8 | */ |
| 9 | |
| 10 | #ifndef _SUNXI_ENGINE_H_ |
| 11 | #define _SUNXI_ENGINE_H_ |
| 12 | |
| 13 | struct drm_plane; |
| 14 | struct drm_device; |
| 15 | |
| 16 | struct sunxi_engine; |
| 17 | |
| 18 | struct sunxi_engine_ops { |
| 19 | void (*commit)(struct sunxi_engine *engine); |
| 20 | struct drm_plane **(*layers_init)(struct drm_device *drm, |
| 21 | struct sunxi_engine *engine); |
| 22 | |
| 23 | void (*apply_color_correction)(struct sunxi_engine *engine); |
| 24 | void (*disable_color_correction)(struct sunxi_engine *engine); |
| 25 | }; |
| 26 | |
| 27 | /** |
| 28 | * struct sunxi_engine - the common parts of an engine for sun4i-drm driver |
| 29 | * @ops: the operations of the engine |
| 30 | * @node: the of device node of the engine |
| 31 | * @regs: the regmap of the engine |
| 32 | * @id: the id of the engine (-1 if not used) |
| 33 | */ |
| 34 | struct sunxi_engine { |
| 35 | const struct sunxi_engine_ops *ops; |
| 36 | |
| 37 | struct device_node *node; |
| 38 | struct regmap *regs; |
| 39 | |
| 40 | int id; |
| 41 | |
| 42 | /* Engine list management */ |
| 43 | struct list_head list; |
| 44 | }; |
| 45 | |
| 46 | /** |
| 47 | * sunxi_engine_commit() - commit all changes of the engine |
| 48 | * @engine: pointer to the engine |
| 49 | */ |
| 50 | static inline void |
| 51 | sunxi_engine_commit(struct sunxi_engine *engine) |
| 52 | { |
| 53 | if (engine->ops && engine->ops->commit) |
| 54 | engine->ops->commit(engine); |
| 55 | } |
| 56 | |
| 57 | /** |
| 58 | * sunxi_engine_layers_init() - Create planes (layers) for the engine |
| 59 | * @drm: pointer to the drm_device for which planes will be created |
| 60 | * @engine: pointer to the engine |
| 61 | */ |
| 62 | static inline struct drm_plane ** |
| 63 | sunxi_engine_layers_init(struct drm_device *drm, struct sunxi_engine *engine) |
| 64 | { |
| 65 | if (engine->ops && engine->ops->layers_init) |
| 66 | return engine->ops->layers_init(drm, engine); |
| 67 | return ERR_PTR(-ENOSYS); |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * sunxi_engine_apply_color_correction - Apply the RGB2YUV color correction |
| 72 | * @engine: pointer to the engine |
| 73 | * |
| 74 | * This functionality is optional for an engine, however, if the engine is |
| 75 | * intended to be used with TV Encoder, the output will be incorrect |
| 76 | * without the color correction, due to TV Encoder expects the engine to |
| 77 | * output directly YUV signal. |
| 78 | */ |
| 79 | static inline void |
| 80 | sunxi_engine_apply_color_correction(struct sunxi_engine *engine) |
| 81 | { |
| 82 | if (engine->ops && engine->ops->apply_color_correction) |
| 83 | engine->ops->apply_color_correction(engine); |
| 84 | } |
| 85 | |
| 86 | /** |
| 87 | * sunxi_engine_disable_color_correction - Disable the color space correction |
| 88 | * @engine: pointer to the engine |
| 89 | * |
| 90 | * This function is paired with apply_color_correction(). |
| 91 | */ |
| 92 | static inline void |
| 93 | sunxi_engine_disable_color_correction(struct sunxi_engine *engine) |
| 94 | { |
| 95 | if (engine->ops && engine->ops->disable_color_correction) |
| 96 | engine->ops->disable_color_correction(engine); |
| 97 | } |
| 98 | #endif /* _SUNXI_ENGINE_H_ */ |