93 lines
2.9 KiB
C
93 lines
2.9 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
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*/
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#ifndef __DPU_RM_H__
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#define __DPU_RM_H__
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#include <linux/list.h>
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#include "msm_kms.h"
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#include "dpu_hw_top.h"
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struct dpu_global_state;
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/**
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* struct dpu_rm - DPU dynamic hardware resource manager
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* @pingpong_blks: array of pingpong hardware resources
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* @mixer_blks: array of layer mixer hardware resources
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* @ctl_blks: array of ctl hardware resources
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* @intf_blks: array of intf hardware resources
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* @dspp_blks: array of dspp hardware resources
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* @lm_max_width: cached layer mixer maximum width
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* @rm_lock: resource manager mutex
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*/
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struct dpu_rm {
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struct dpu_hw_blk *pingpong_blks[PINGPONG_MAX - PINGPONG_0];
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struct dpu_hw_blk *mixer_blks[LM_MAX - LM_0];
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struct dpu_hw_blk *ctl_blks[CTL_MAX - CTL_0];
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struct dpu_hw_blk *intf_blks[INTF_MAX - INTF_0];
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struct dpu_hw_blk *dspp_blks[DSPP_MAX - DSPP_0];
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struct dpu_hw_blk *merge_3d_blks[MERGE_3D_MAX - MERGE_3D_0];
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uint32_t lm_max_width;
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};
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/**
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* dpu_rm_init - Read hardware catalog and create reservation tracking objects
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* for all HW blocks.
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* @rm: DPU Resource Manager handle
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* @cat: Pointer to hardware catalog
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* @mmio: mapped register io address of MDP
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* @Return: 0 on Success otherwise -ERROR
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*/
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int dpu_rm_init(struct dpu_rm *rm,
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struct dpu_mdss_cfg *cat,
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void __iomem *mmio);
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/**
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* dpu_rm_destroy - Free all memory allocated by dpu_rm_init
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* @rm: DPU Resource Manager handle
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* @Return: 0 on Success otherwise -ERROR
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*/
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int dpu_rm_destroy(struct dpu_rm *rm);
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/**
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* dpu_rm_reserve - Given a CRTC->Encoder->Connector display chain, analyze
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* the use connections and user requirements, specified through related
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* topology control properties, and reserve hardware blocks to that
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* display chain.
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* HW blocks can then be accessed through dpu_rm_get_* functions.
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* HW Reservations should be released via dpu_rm_release_hw.
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* @rm: DPU Resource Manager handle
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* @drm_enc: DRM Encoder handle
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* @crtc_state: Proposed Atomic DRM CRTC State handle
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* @topology: Pointer to topology info for the display
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* @Return: 0 on Success otherwise -ERROR
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*/
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int dpu_rm_reserve(struct dpu_rm *rm,
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struct dpu_global_state *global_state,
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struct drm_encoder *drm_enc,
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struct drm_crtc_state *crtc_state,
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struct msm_display_topology topology);
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/**
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* dpu_rm_reserve - Given the encoder for the display chain, release any
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* HW blocks previously reserved for that use case.
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* @rm: DPU Resource Manager handle
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* @enc: DRM Encoder handle
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* @Return: 0 on Success otherwise -ERROR
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*/
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void dpu_rm_release(struct dpu_global_state *global_state,
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struct drm_encoder *enc);
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/**
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* Get hw resources of the given type that are assigned to this encoder.
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*/
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int dpu_rm_get_assigned_resources(struct dpu_rm *rm,
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struct dpu_global_state *global_state, uint32_t enc_id,
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enum dpu_hw_blk_type type, struct dpu_hw_blk **blks, int blks_size);
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#endif /* __DPU_RM_H__ */
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