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 * @hw_sspp: array of sspp hardware resources
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_intf *hw_intf[INTF_MAX - INTF_0];
31 struct dpu_hw_wb *hw_wb[WB_MAX - WB_0];
32 struct dpu_hw_blk *dspp_blks[DSPP_MAX - DSPP_0];
33 struct dpu_hw_blk *merge_3d_blks[MERGE_3D_MAX - MERGE_3D_0];
34 struct dpu_hw_blk *dsc_blks[DSC_MAX - DSC_0];
35 struct dpu_hw_sspp *hw_sspp[SSPP_MAX - SSPP_NONE];
36 };
37
38 /**
39 * dpu_rm_init - Read hardware catalog and create reservation tracking objects
40 * for all HW blocks.
41 * @rm: DPU Resource Manager handle
42 * @cat: Pointer to hardware catalog
43 * @mdss_data: Pointer to MDSS / UBWC configuration
44 * @mmio: mapped register io address of MDP
45 * @Return: 0 on Success otherwise -ERROR
46 */
47 int dpu_rm_init(struct dpu_rm *rm,
48 const struct dpu_mdss_cfg *cat,
49 const struct msm_mdss_data *mdss_data,
50 void __iomem *mmio);
51
52 /**
53 * dpu_rm_destroy - Free all memory allocated by dpu_rm_init
54 * @rm: DPU Resource Manager handle
55 * @Return: 0 on Success otherwise -ERROR
56 */
57 int dpu_rm_destroy(struct dpu_rm *rm);
58
59 /**
60 * dpu_rm_reserve - Given a CRTC->Encoder->Connector display chain, analyze
61 * the use connections and user requirements, specified through related
62 * topology control properties, and reserve hardware blocks to that
63 * display chain.
64 * HW blocks can then be accessed through dpu_rm_get_* functions.
65 * HW Reservations should be released via dpu_rm_release_hw.
66 * @rm: DPU Resource Manager handle
67 * @drm_enc: DRM Encoder handle
68 * @crtc_state: Proposed Atomic DRM CRTC State handle
69 * @topology: Pointer to topology info for the display
70 * @Return: 0 on Success otherwise -ERROR
71 */
72 int dpu_rm_reserve(struct dpu_rm *rm,
73 struct dpu_global_state *global_state,
74 struct drm_encoder *drm_enc,
75 struct drm_crtc_state *crtc_state,
76 struct msm_display_topology topology);
77
78 /**
79 * dpu_rm_reserve - Given the encoder for the display chain, release any
80 * HW blocks previously reserved for that use case.
81 * @rm: DPU Resource Manager handle
82 * @enc: DRM Encoder handle
83 * @Return: 0 on Success otherwise -ERROR
84 */
85 void dpu_rm_release(struct dpu_global_state *global_state,
86 struct drm_encoder *enc);
87
88 /**
89 * Get hw resources of the given type that are assigned to this encoder.
90 */
91 int dpu_rm_get_assigned_resources(struct dpu_rm *rm,
92 struct dpu_global_state *global_state, uint32_t enc_id,
93 enum dpu_hw_blk_type type, struct dpu_hw_blk **blks, int blks_size);
94
95 /**
96 * dpu_rm_get_intf - Return a struct dpu_hw_intf instance given it's index.
97 * @rm: DPU Resource Manager handle
98 * @intf_idx: INTF's index
99 */
dpu_rm_get_intf(struct dpu_rm * rm,enum dpu_intf intf_idx)100 static inline struct dpu_hw_intf *dpu_rm_get_intf(struct dpu_rm *rm, enum dpu_intf intf_idx)
101 {
102 return rm->hw_intf[intf_idx - INTF_0];
103 }
104
105 /**
106 * dpu_rm_get_wb - Return a struct dpu_hw_wb instance given it's index.
107 * @rm: DPU Resource Manager handle
108 * @wb_idx: WB index
109 */
dpu_rm_get_wb(struct dpu_rm * rm,enum dpu_wb wb_idx)110 static inline struct dpu_hw_wb *dpu_rm_get_wb(struct dpu_rm *rm, enum dpu_wb wb_idx)
111 {
112 return rm->hw_wb[wb_idx - WB_0];
113 }
114
115 /**
116 * dpu_rm_get_sspp - Return a struct dpu_hw_sspp instance given it's index.
117 * @rm: DPU Resource Manager handle
118 * @sspp_idx: SSPP index
119 */
dpu_rm_get_sspp(struct dpu_rm * rm,enum dpu_sspp sspp_idx)120 static inline struct dpu_hw_sspp *dpu_rm_get_sspp(struct dpu_rm *rm, enum dpu_sspp sspp_idx)
121 {
122 return rm->hw_sspp[sspp_idx - SSPP_NONE];
123 }
124
125 #endif /* __DPU_RM_H__ */
126
127