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  * @hw_wb: array of wb hardware resources
23  * @dspp_blks: array of dspp hardware resources
24  */
25 struct dpu_rm {
26 	struct dpu_hw_blk *pingpong_blks[PINGPONG_MAX - PINGPONG_0];
27 	struct dpu_hw_blk *mixer_blks[LM_MAX - LM_0];
28 	struct dpu_hw_blk *ctl_blks[CTL_MAX - CTL_0];
29 	struct dpu_hw_intf *hw_intf[INTF_MAX - INTF_0];
30 	struct dpu_hw_wb *hw_wb[WB_MAX - WB_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 	struct dpu_hw_blk *dsc_blks[DSC_MAX - DSC_0];
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 		const 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 
91 /**
92  * dpu_rm_get_intf - Return a struct dpu_hw_intf instance given it's index.
93  * @rm: DPU Resource Manager handle
94  * @intf_idx: INTF's index
95  */
dpu_rm_get_intf(struct dpu_rm * rm,enum dpu_intf intf_idx)96 static inline struct dpu_hw_intf *dpu_rm_get_intf(struct dpu_rm *rm, enum dpu_intf intf_idx)
97 {
98 	return rm->hw_intf[intf_idx - INTF_0];
99 }
100 
101 /**
102  * dpu_rm_get_wb - Return a struct dpu_hw_wb instance given it's index.
103  * @rm: DPU Resource Manager handle
104  * @wb_idx: WB index
105  */
dpu_rm_get_wb(struct dpu_rm * rm,enum dpu_wb wb_idx)106 static inline struct dpu_hw_wb *dpu_rm_get_wb(struct dpu_rm *rm, enum dpu_wb wb_idx)
107 {
108 	return rm->hw_wb[wb_idx - WB_0];
109 }
110 
111 #endif /* __DPU_RM_H__ */
112 
113