1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * AMD MP2 PCIe communication driver
4  * Copyright 2020 Advanced Micro Devices, Inc.
5  * Authors: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
6  *	    Sandeep Singh <Sandeep.singh@amd.com>
7  */
8 
9 #ifndef PCIE_MP2_AMD_H
10 #define PCIE_MP2_AMD_H
11 
12 #include <linux/pci.h>
13 
14 #define PCI_DEVICE_ID_AMD_MP2	0x15E4
15 
16 #define ENABLE_SENSOR		1
17 #define DISABLE_SENSOR		2
18 #define STOP_ALL_SENSORS	8
19 
20 /* MP2 C2P Message Registers */
21 #define AMD_C2P_MSG0	0x10500
22 #define AMD_C2P_MSG1	0x10504
23 #define AMD_C2P_MSG2	0x10508
24 
25 /* MP2 P2C Message Registers */
26 #define AMD_P2C_MSG3	0x1068C /* Supported Sensors info */
27 
28 /* SFH Command register */
29 union sfh_cmd_base {
30 	u32 ul;
31 	struct {
32 		u32 cmd_id : 8;
33 		u32 sensor_id : 8;
34 		u32 period : 16;
35 	} s;
36 };
37 
38 union sfh_cmd_param {
39 	u32 ul;
40 	struct {
41 		u32 buf_layout : 2;
42 		u32 buf_length : 6;
43 		u32 rsvd : 24;
44 	} s;
45 };
46 
47 struct sfh_cmd_reg {
48 	union sfh_cmd_base cmd_base;
49 	union sfh_cmd_param cmd_param;
50 	phys_addr_t phys_addr;
51 };
52 
53 enum sensor_idx {
54 	accel_idx = 0,
55 	gyro_idx = 1,
56 	mag_idx = 2,
57 	als_idx = 19
58 };
59 
60 struct amd_mp2_dev {
61 	struct pci_dev *pdev;
62 	struct amdtp_cl_data *cl_data;
63 	void __iomem *mmio;
64 };
65 
66 struct amd_mp2_sensor_info {
67 	u8 sensor_idx;
68 	u32 period;
69 	dma_addr_t dma_address;
70 };
71 
72 void amd_start_sensor(struct amd_mp2_dev *privdata, struct amd_mp2_sensor_info info);
73 void amd_stop_sensor(struct amd_mp2_dev *privdata, u16 sensor_idx);
74 void amd_stop_all_sensors(struct amd_mp2_dev *privdata);
75 int amd_mp2_get_sensor_num(struct amd_mp2_dev *privdata, u8 *sensor_id);
76 int amd_sfh_hid_client_init(struct amd_mp2_dev *privdata);
77 int amd_sfh_hid_client_deinit(struct amd_mp2_dev *privdata);
78 #endif
79