xref: /linux/drivers/hid/amd-sfh-hid/amd_sfh_pcie.h (revision 79790b6818e96c58fe2bffee1b418c16e64e7b80)
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 #define ACS_IDX		22
27 
28 #define SENSOR_DISCOVERY_STATUS_MASK		GENMASK(5, 3)
29 #define SENSOR_DISCOVERY_STATUS_SHIFT		3
30 
31 /* SFH Command register */
32 union sfh_cmd_base {
33 	u32 ul;
34 	struct {
35 		u32 cmd_id : 8;
36 		u32 sensor_id : 8;
37 		u32 period : 16;
38 	} s;
39 	struct {
40 		u32 cmd_id : 4;
41 		u32 intr_disable : 1;
42 		u32 rsvd1 : 3;
43 		u32 length : 7;
44 		u32 mem_type : 1;
45 		u32 sensor_id : 8;
46 		u32 period : 8;
47 	} cmd_v2;
48 };
49 
50 union cmd_response {
51 	u32 resp;
52 	struct {
53 		u32 status	: 2;
54 		u32 out_in_c2p	: 1;
55 		u32 rsvd1	: 1;
56 		u32 response	: 4;
57 		u32 sub_cmd	: 8;
58 		u32 sensor_id	: 6;
59 		u32 rsvd2	: 10;
60 	} response_v2;
61 };
62 
63 union sfh_cmd_param {
64 	u32 ul;
65 	struct {
66 		u32 buf_layout : 2;
67 		u32 buf_length : 6;
68 		u32 rsvd : 24;
69 	} s;
70 };
71 
72 struct sfh_cmd_reg {
73 	union sfh_cmd_base cmd_base;
74 	union sfh_cmd_param cmd_param;
75 	phys_addr_t phys_addr;
76 };
77 
78 enum sensor_idx {
79 	accel_idx = 0,
80 	gyro_idx = 1,
81 	mag_idx = 2,
82 	als_idx = 19
83 };
84 
85 enum mem_use_type {
86 	USE_DRAM,
87 	USE_C2P_REG,
88 };
89 
90 struct hpd_status {
91 	union {
92 		struct {
93 			u32 object_distance       : 16;
94 			u32 probablity		  : 8;
95 			u32 human_presence_actual : 4;
96 			u32 human_presence_report : 4;
97 		} shpd;
98 		u32 val;
99 	};
100 };
101 
102 int amd_mp2_get_sensor_num(struct amd_mp2_dev *privdata, u8 *sensor_id);
103 int amd_sfh_hid_client_init(struct amd_mp2_dev *privdata);
104 int amd_sfh_hid_client_deinit(struct amd_mp2_dev *privdata);
105 void amd_sfh_set_desc_ops(struct amd_mp2_ops *mp2_ops);
106 
107 #endif
108