drivers/hid/amd-sfh-hid/amd_sfh_pcie.h

   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         phys_addr_t phys_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