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 * @cdm_blk: cdm hardware resource
26 */
27 struct dpu_rm {
28 struct dpu_hw_blk *pingpong_blks[PINGPONG_MAX - PINGPONG_0];
29 struct dpu_hw_blk *mixer_blks[LM_MAX - LM_0];
30 struct dpu_hw_blk *ctl_blks[CTL_MAX - CTL_0];
31 struct dpu_hw_intf *hw_intf[INTF_MAX - INTF_0];
32 struct dpu_hw_wb *hw_wb[WB_MAX - WB_0];
33 struct dpu_hw_blk *dspp_blks[DSPP_MAX - DSPP_0];
34 struct dpu_hw_blk *merge_3d_blks[MERGE_3D_MAX - MERGE_3D_0];
35 struct dpu_hw_blk *dsc_blks[DSC_MAX - DSC_0];
36 struct dpu_hw_sspp *hw_sspp[SSPP_MAX - SSPP_NONE];
37 struct dpu_hw_blk *cdm_blk;
38 };
39
40 /**
41 * dpu_rm_init - Read hardware catalog and create reservation tracking objects
42 * for all HW blocks.
43 * @dev: Corresponding device for devres management
44 * @rm: DPU Resource Manager handle
45 * @cat: Pointer to hardware catalog
46 * @mdss_data: Pointer to MDSS / UBWC configuration
47 * @mmio: mapped register io address of MDP
48 * @Return: 0 on Success otherwise -ERROR
49 */
50 int dpu_rm_init(struct drm_device *dev,
51 struct dpu_rm *rm,
52 const struct dpu_mdss_cfg *cat,
53 const struct msm_mdss_data *mdss_data,
54 void __iomem *mmio);
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
92 /**
93 * dpu_rm_print_state - output the RM private state
94 * @p: DRM printer
95 * @global_state: global state
96 */
97 void dpu_rm_print_state(struct drm_printer *p,
98 const struct dpu_global_state *global_state);
99
100 /**
101 * dpu_rm_get_intf - Return a struct dpu_hw_intf instance given it's index.
102 * @rm: DPU Resource Manager handle
103 * @intf_idx: INTF's index
104 */
dpu_rm_get_intf(struct dpu_rm * rm,enum dpu_intf intf_idx)105 static inline struct dpu_hw_intf *dpu_rm_get_intf(struct dpu_rm *rm, enum dpu_intf intf_idx)
106 {
107 return rm->hw_intf[intf_idx - INTF_0];
108 }
109
110 /**
111 * dpu_rm_get_wb - Return a struct dpu_hw_wb instance given it's index.
112 * @rm: DPU Resource Manager handle
113 * @wb_idx: WB index
114 */
dpu_rm_get_wb(struct dpu_rm * rm,enum dpu_wb wb_idx)115 static inline struct dpu_hw_wb *dpu_rm_get_wb(struct dpu_rm *rm, enum dpu_wb wb_idx)
116 {
117 return rm->hw_wb[wb_idx - WB_0];
118 }
119
120 /**
121 * dpu_rm_get_sspp - Return a struct dpu_hw_sspp instance given it's index.
122 * @rm: DPU Resource Manager handle
123 * @sspp_idx: SSPP index
124 */
dpu_rm_get_sspp(struct dpu_rm * rm,enum dpu_sspp sspp_idx)125 static inline struct dpu_hw_sspp *dpu_rm_get_sspp(struct dpu_rm *rm, enum dpu_sspp sspp_idx)
126 {
127 return rm->hw_sspp[sspp_idx - SSPP_NONE];
128 }
129
130 #endif /* __DPU_RM_H__ */
131
132