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When display lists are linked in a chain, they will be processed automatically by the hardware, with each list linking to the next. Only on the last display list will the frame end interrupt be fired to mark the completion event. Upon frame-end, the chain will be iterated to release each display list back to the free list. The chained lists use case (image partitioning) can require up to 64 lists per frame in the worst case scenario, bump up the number of preallocated lists. Signed-off-by: Kieran Bingham <kieran+renesas@bingham.xyz> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
46 lines
1.6 KiB
C
46 lines
1.6 KiB
C
/*
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* vsp1_dl.h -- R-Car VSP1 Display List
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*
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* Copyright (C) 2015 Renesas Corporation
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*
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* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef __VSP1_DL_H__
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#define __VSP1_DL_H__
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#include <linux/types.h>
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struct vsp1_device;
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struct vsp1_dl_fragment;
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struct vsp1_dl_list;
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struct vsp1_dl_manager;
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void vsp1_dlm_setup(struct vsp1_device *vsp1);
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struct vsp1_dl_manager *vsp1_dlm_create(struct vsp1_device *vsp1,
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unsigned int index,
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unsigned int prealloc);
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void vsp1_dlm_destroy(struct vsp1_dl_manager *dlm);
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void vsp1_dlm_reset(struct vsp1_dl_manager *dlm);
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void vsp1_dlm_irq_display_start(struct vsp1_dl_manager *dlm);
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void vsp1_dlm_irq_frame_end(struct vsp1_dl_manager *dlm);
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struct vsp1_dl_list *vsp1_dl_list_get(struct vsp1_dl_manager *dlm);
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void vsp1_dl_list_put(struct vsp1_dl_list *dl);
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void vsp1_dl_list_write(struct vsp1_dl_list *dl, u32 reg, u32 data);
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void vsp1_dl_list_commit(struct vsp1_dl_list *dl);
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struct vsp1_dl_body *vsp1_dl_fragment_alloc(struct vsp1_device *vsp1,
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unsigned int num_entries);
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void vsp1_dl_fragment_free(struct vsp1_dl_body *dlb);
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void vsp1_dl_fragment_write(struct vsp1_dl_body *dlb, u32 reg, u32 data);
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int vsp1_dl_list_add_fragment(struct vsp1_dl_list *dl,
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struct vsp1_dl_body *dlb);
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int vsp1_dl_list_add_chain(struct vsp1_dl_list *head, struct vsp1_dl_list *dl);
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#endif /* __VSP1_DL_H__ */
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