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/* SPDX-License-Identifier: GPL-2.0+ */
* vsp1_dl.h -- R-Car VSP1 Display List
* Copyright (C) 2015 Renesas Corporation
* Contact: Laurent Pinchart (
#ifndef __VSP1_DL_H__
#define __VSP1_DL_H__
#include <linux/types.h>
struct vsp1_device;
struct vsp1_dl_body;
struct vsp1_dl_body_pool;
struct vsp1_dl_list;
struct vsp1_dl_manager;
* struct vsp1_dl_ext_cmd - Extended Display command
* @pool: pool to which this command belongs
* @free: entry in the pool of free commands list
* @opcode: command type opcode
* @flags: flags used by the command
* @cmds: array of command bodies for this extended cmd
* @num_cmds: quantity of commands in @cmds array
* @cmd_dma: DMA address of the command body
* @data: memory allocation for command-specific data
* @data_dma: DMA address for command-specific data
struct vsp1_dl_ext_cmd {
struct vsp1_dl_cmd_pool *pool;
struct list_head free;
u8 opcode;
u32 flags;
struct vsp1_pre_ext_dl_body *cmds;
unsigned int num_cmds;
dma_addr_t cmd_dma;
void *data;
dma_addr_t data_dma;
void vsp1_dlm_setup(struct vsp1_device *vsp1);
struct vsp1_dl_manager *vsp1_dlm_create(struct vsp1_device *vsp1,
unsigned int index,
unsigned int prealloc);
void vsp1_dlm_destroy(struct vsp1_dl_manager *dlm);
void vsp1_dlm_reset(struct vsp1_dl_manager *dlm);
unsigned int vsp1_dlm_irq_frame_end(struct vsp1_dl_manager *dlm);
struct vsp1_dl_body *vsp1_dlm_dl_body_get(struct vsp1_dl_manager *dlm);
struct vsp1_dl_list *vsp1_dl_list_get(struct vsp1_dl_manager *dlm);
void vsp1_dl_list_put(struct vsp1_dl_list *dl);
struct vsp1_dl_body *vsp1_dl_list_get_body0(struct vsp1_dl_list *dl);
struct vsp1_dl_ext_cmd *vsp1_dl_get_pre_cmd(struct vsp1_dl_list *dl);
void vsp1_dl_list_commit(struct vsp1_dl_list *dl, bool internal);
struct vsp1_dl_body_pool *
vsp1_dl_body_pool_create(struct vsp1_device *vsp1, unsigned int num_bodies,
unsigned int num_entries, size_t extra_size);
void vsp1_dl_body_pool_destroy(struct vsp1_dl_body_pool *pool);
struct vsp1_dl_body *vsp1_dl_body_get(struct vsp1_dl_body_pool *pool);
void vsp1_dl_body_put(struct vsp1_dl_body *dlb);
void vsp1_dl_body_write(struct vsp1_dl_body *dlb, u32 reg, u32 data);
int vsp1_dl_list_add_body(struct vsp1_dl_list *dl, struct vsp1_dl_body *dlb);
int vsp1_dl_list_add_chain(struct vsp1_dl_list *head, struct vsp1_dl_list *dl);
#endif /* __VSP1_DL_H__ */