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 u32 activecontrolstatus; 65 }; 66 67 struct amd_mp2_sensor_info { 68 u8 sensor_idx; 69 u32 period; 70 dma_addr_t dma_address; 71 }; 72 73 void amd_start_sensor(struct amd_mp2_dev *privdata, struct amd_mp2_sensor_info info); 74 void amd_stop_sensor(struct amd_mp2_dev *privdata, u16 sensor_idx); 75 void amd_stop_all_sensors(struct amd_mp2_dev *privdata); 76 int amd_mp2_get_sensor_num(struct amd_mp2_dev *privdata, u8 *sensor_id); 77 int amd_sfh_hid_client_init(struct amd_mp2_dev *privdata); 78 int amd_sfh_hid_client_deinit(struct amd_mp2_dev *privdata); 79 #endif 80