1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (c) 2016-2018, The Linux Foundation. All rights reserved. 4 */ 5 6 #ifndef __DPU_RM_H__ 7 #define __DPU_RM_H__ 8 9 #include <linux/list.h> 10 11 #include "msm_kms.h" 12 #include "dpu_hw_top.h" 13 14 struct dpu_global_state; 15 16 /** 17 * struct dpu_rm - DPU dynamic hardware resource manager 18 * @pingpong_blks: array of pingpong hardware resources 19 * @mixer_blks: array of layer mixer hardware resources 20 * @ctl_blks: array of ctl hardware resources 21 * @hw_intf: array of intf hardware resources 22 * @dspp_blks: array of dspp hardware resources 23 */ 24 struct dpu_rm { 25 struct dpu_hw_blk *pingpong_blks[PINGPONG_MAX - PINGPONG_0]; 26 struct dpu_hw_blk *mixer_blks[LM_MAX - LM_0]; 27 struct dpu_hw_blk *ctl_blks[CTL_MAX - CTL_0]; 28 struct dpu_hw_intf *hw_intf[INTF_MAX - INTF_0]; 29 struct dpu_hw_blk *dspp_blks[DSPP_MAX - DSPP_0]; 30 struct dpu_hw_blk *merge_3d_blks[MERGE_3D_MAX - MERGE_3D_0]; 31 }; 32 33 /** 34 * dpu_rm_init - Read hardware catalog and create reservation tracking objects 35 * for all HW blocks. 36 * @rm: DPU Resource Manager handle 37 * @cat: Pointer to hardware catalog 38 * @mmio: mapped register io address of MDP 39 * @Return: 0 on Success otherwise -ERROR 40 */ 41 int dpu_rm_init(struct dpu_rm *rm, 42 struct dpu_mdss_cfg *cat, 43 void __iomem *mmio); 44 45 /** 46 * dpu_rm_destroy - Free all memory allocated by dpu_rm_init 47 * @rm: DPU Resource Manager handle 48 * @Return: 0 on Success otherwise -ERROR 49 */ 50 int dpu_rm_destroy(struct dpu_rm *rm); 51 52 /** 53 * dpu_rm_reserve - Given a CRTC->Encoder->Connector display chain, analyze 54 * the use connections and user requirements, specified through related 55 * topology control properties, and reserve hardware blocks to that 56 * display chain. 57 * HW blocks can then be accessed through dpu_rm_get_* functions. 58 * HW Reservations should be released via dpu_rm_release_hw. 59 * @rm: DPU Resource Manager handle 60 * @drm_enc: DRM Encoder handle 61 * @crtc_state: Proposed Atomic DRM CRTC State handle 62 * @topology: Pointer to topology info for the display 63 * @Return: 0 on Success otherwise -ERROR 64 */ 65 int dpu_rm_reserve(struct dpu_rm *rm, 66 struct dpu_global_state *global_state, 67 struct drm_encoder *drm_enc, 68 struct drm_crtc_state *crtc_state, 69 struct msm_display_topology topology); 70 71 /** 72 * dpu_rm_reserve - Given the encoder for the display chain, release any 73 * HW blocks previously reserved for that use case. 74 * @rm: DPU Resource Manager handle 75 * @enc: DRM Encoder handle 76 * @Return: 0 on Success otherwise -ERROR 77 */ 78 void dpu_rm_release(struct dpu_global_state *global_state, 79 struct drm_encoder *enc); 80 81 /** 82 * Get hw resources of the given type that are assigned to this encoder. 83 */ 84 int dpu_rm_get_assigned_resources(struct dpu_rm *rm, 85 struct dpu_global_state *global_state, uint32_t enc_id, 86 enum dpu_hw_blk_type type, struct dpu_hw_blk **blks, int blks_size); 87 88 /** 89 * dpu_rm_get_intf - Return a struct dpu_hw_intf instance given it's index. 90 * @rm: DPU Resource Manager handle 91 * @intf_idx: INTF's index 92 */ 93 static inline struct dpu_hw_intf *dpu_rm_get_intf(struct dpu_rm *rm, enum dpu_intf intf_idx) 94 { 95 return rm->hw_intf[intf_idx - INTF_0]; 96 } 97 98 #endif /* __DPU_RM_H__ */ 99 100