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https://github.com/torvalds/linux
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9dc84e98a3
We need to acquire mutex before using the resources, and need to release it after finished. So we don't need to write registers in the blanking period. Signed-off-by: YT Shen <yt.shen@mediatek.com> Acked-by: CK Hu <ck.hu@mediatek.com>
44 lines
1.5 KiB
C
44 lines
1.5 KiB
C
/*
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* Copyright (c) 2015 MediaTek Inc.
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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 version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef MTK_DRM_DDP_H
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#define MTK_DRM_DDP_H
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#include "mtk_drm_ddp_comp.h"
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struct regmap;
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struct device;
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struct mtk_disp_mutex;
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void mtk_ddp_add_comp_to_path(void __iomem *config_regs,
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enum mtk_ddp_comp_id cur,
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enum mtk_ddp_comp_id next);
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void mtk_ddp_remove_comp_from_path(void __iomem *config_regs,
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enum mtk_ddp_comp_id cur,
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enum mtk_ddp_comp_id next);
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struct mtk_disp_mutex *mtk_disp_mutex_get(struct device *dev, unsigned int id);
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int mtk_disp_mutex_prepare(struct mtk_disp_mutex *mutex);
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void mtk_disp_mutex_add_comp(struct mtk_disp_mutex *mutex,
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enum mtk_ddp_comp_id id);
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void mtk_disp_mutex_enable(struct mtk_disp_mutex *mutex);
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void mtk_disp_mutex_disable(struct mtk_disp_mutex *mutex);
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void mtk_disp_mutex_remove_comp(struct mtk_disp_mutex *mutex,
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enum mtk_ddp_comp_id id);
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void mtk_disp_mutex_unprepare(struct mtk_disp_mutex *mutex);
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void mtk_disp_mutex_put(struct mtk_disp_mutex *mutex);
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void mtk_disp_mutex_acquire(struct mtk_disp_mutex *mutex);
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void mtk_disp_mutex_release(struct mtk_disp_mutex *mutex);
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#endif /* MTK_DRM_DDP_H */
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