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 * @intf_blks: array of intf hardware resources 22 * @dspp_blks: array of dspp hardware resources 23 * @lm_max_width: cached layer mixer maximum width 24 * @rm_lock: resource manager mutex 25 */ 26 struct dpu_rm { 27 struct dpu_hw_blk *pingpong_blks[PINGPONG_MAX - PINGPONG_0]; 28 struct dpu_hw_blk *mixer_blks[LM_MAX - LM_0]; 29 struct dpu_hw_blk *ctl_blks[CTL_MAX - CTL_0]; 30 struct dpu_hw_blk *intf_blks[INTF_MAX - INTF_0]; 31 struct dpu_hw_blk *dspp_blks[DSPP_MAX - DSPP_0]; 32 struct dpu_hw_blk *merge_3d_blks[MERGE_3D_MAX - MERGE_3D_0]; 33 34 uint32_t lm_max_width; 35 }; 36 37 /** 38 * dpu_rm_init - Read hardware catalog and create reservation tracking objects 39 * for all HW blocks. 40 * @rm: DPU Resource Manager handle 41 * @cat: Pointer to hardware catalog 42 * @mmio: mapped register io address of MDP 43 * @Return: 0 on Success otherwise -ERROR 44 */ 45 int dpu_rm_init(struct dpu_rm *rm, 46 struct dpu_mdss_cfg *cat, 47 void __iomem *mmio); 48 49 /** 50 * dpu_rm_destroy - Free all memory allocated by dpu_rm_init 51 * @rm: DPU Resource Manager handle 52 * @Return: 0 on Success otherwise -ERROR 53 */ 54 int dpu_rm_destroy(struct dpu_rm *rm); 55 56 /** 57 * dpu_rm_reserve - Given a CRTC->Encoder->Connector display chain, analyze 58 * the use connections and user requirements, specified through related 59 * topology control properties, and reserve hardware blocks to that 60 * display chain. 61 * HW blocks can then be accessed through dpu_rm_get_* functions. 62 * HW Reservations should be released via dpu_rm_release_hw. 63 * @rm: DPU Resource Manager handle 64 * @drm_enc: DRM Encoder handle 65 * @crtc_state: Proposed Atomic DRM CRTC State handle 66 * @topology: Pointer to topology info for the display 67 * @Return: 0 on Success otherwise -ERROR 68 */ 69 int dpu_rm_reserve(struct dpu_rm *rm, 70 struct dpu_global_state *global_state, 71 struct drm_encoder *drm_enc, 72 struct drm_crtc_state *crtc_state, 73 struct msm_display_topology topology); 74 75 /** 76 * dpu_rm_reserve - Given the encoder for the display chain, release any 77 * HW blocks previously reserved for that use case. 78 * @rm: DPU Resource Manager handle 79 * @enc: DRM Encoder handle 80 * @Return: 0 on Success otherwise -ERROR 81 */ 82 void dpu_rm_release(struct dpu_global_state *global_state, 83 struct drm_encoder *enc); 84 85 /** 86 * Get hw resources of the given type that are assigned to this encoder. 87 */ 88 int dpu_rm_get_assigned_resources(struct dpu_rm *rm, 89 struct dpu_global_state *global_state, uint32_t enc_id, 90 enum dpu_hw_blk_type type, struct dpu_hw_blk **blks, int blks_size); 91 #endif /* __DPU_RM_H__ */ 92 93