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