1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * AMD MP2 PCIe communication driver
4  * Copyright 2020-2021 Advanced Micro Devices, Inc.
5  * Authors: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
6  *	    Sandeep Singh <Sandeep.singh@amd.com>
7  *	    Basavaraj Natikar <Basavaraj.Natikar@amd.com>
8  */
9 
10 #ifndef PCIE_MP2_AMD_H
11 #define PCIE_MP2_AMD_H
12 
13 #include "amd_sfh_common.h"
14 
15 /* MP2 C2P Message Registers */
16 #define AMD_C2P_MSG0	0x10500
17 #define AMD_C2P_MSG1	0x10504
18 #define AMD_C2P_MSG2	0x10508
19 
20 /* MP2 P2C Message Registers */
21 #define AMD_P2C_MSG3	0x1068C /* Supported Sensors info */
22 
23 #define V2_STATUS	0x2
24 
25 #define HPD_IDX		16
26 
27 #define SENSOR_DISCOVERY_STATUS_MASK		GENMASK(5, 3)
28 #define SENSOR_DISCOVERY_STATUS_SHIFT		3
29 
30 /* SFH Command register */
31 union sfh_cmd_base {
32 	u32 ul;
33 	struct {
34 		u32 cmd_id : 8;
35 		u32 sensor_id : 8;
36 		u32 period : 16;
37 	} s;
38 	struct {
39 		u32 cmd_id : 4;
40 		u32 intr_disable : 1;
41 		u32 rsvd1 : 3;
42 		u32 length : 7;
43 		u32 mem_type : 1;
44 		u32 sensor_id : 8;
45 		u32 period : 8;
46 	} cmd_v2;
47 };
48 
49 union cmd_response {
50 	u32 resp;
51 	struct {
52 		u32 status	: 2;
53 		u32 out_in_c2p	: 1;
54 		u32 rsvd1	: 1;
55 		u32 response	: 4;
56 		u32 sub_cmd	: 8;
57 		u32 sensor_id	: 6;
58 		u32 rsvd2	: 10;
59 	} response_v2;
60 };
61 
62 union sfh_cmd_param {
63 	u32 ul;
64 	struct {
65 		u32 buf_layout : 2;
66 		u32 buf_length : 6;
67 		u32 rsvd : 24;
68 	} s;
69 };
70 
71 struct sfh_cmd_reg {
72 	union sfh_cmd_base cmd_base;
73 	union sfh_cmd_param cmd_param;
74 	phys_addr_t phys_addr;
75 };
76 
77 enum sensor_idx {
78 	accel_idx = 0,
79 	gyro_idx = 1,
80 	mag_idx = 2,
81 	als_idx = 19
82 };
83 
84 enum mem_use_type {
85 	USE_DRAM,
86 	USE_C2P_REG,
87 };
88 
89 struct hpd_status {
90 	union {
91 		struct {
92 			u32 human_presence_report : 4;
93 			u32 human_presence_actual : 4;
94 			u32 probablity		  : 8;
95 			u32 object_distance       : 16;
96 		} shpd;
97 		u32 val;
98 	};
99 };
100 
101 int amd_mp2_get_sensor_num(struct amd_mp2_dev *privdata, u8 *sensor_id);
102 int amd_sfh_hid_client_init(struct amd_mp2_dev *privdata);
103 int amd_sfh_hid_client_deinit(struct amd_mp2_dev *privdata);
104 void amd_sfh_set_desc_ops(struct amd_mp2_ops *mp2_ops);
105 
106 #endif
107