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/* SPDX-License-Identifier: MIT
*
* Copyright © 2019 Intel Corporation
*/
#ifndef _INTEL_DSB_H
#define _INTEL_DSB_H
#include <linux/types.h>
#include "i915_reg.h"
struct intel_crtc;
struct i915_vma;
enum dsb_id {
INVALID_DSB = -1,
DSB1,
DSB2,
DSB3,
MAX_DSB_PER_PIPE
};
struct intel_dsb {
long refcount;
enum dsb_id id;
u32 *cmd_buf;
struct i915_vma *vma;
/*
* free_pos will point the first free entry position
* and help in calculating tail of command buffer.
*/
int free_pos;
/*
* ins_start_offset will help to store start address of the dsb
* instuction and help in identifying the batch of auto-increment
* register.
*/
u32 ins_start_offset;
};
struct intel_dsb *
intel_dsb_get(struct intel_crtc *crtc);
void intel_dsb_put(struct intel_dsb *dsb);
void intel_dsb_reg_write(struct intel_dsb *dsb, i915_reg_t reg, u32 val);
void intel_dsb_indexed_reg_write(struct intel_dsb *dsb, i915_reg_t reg,
u32 val);
void intel_dsb_commit(struct intel_dsb *dsb);
#endif
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