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

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * AMD MP2 Sensors transport driver
   4  *
   5  * Copyright 2020-2021 Advanced Micro Devices, Inc.
   6  * Authors: Nehal Bakulchandra Shah <Nehal-bakulchandra.shah@amd.com>
   7  *          Sandeep Singh <sandeep.singh@amd.com>
   8  *          Basavaraj Natikar <Basavaraj.Natikar@amd.com>
   9  */
  10
  11 #ifndef AMDSFH_HID_H
  12 #define AMDSFH_HID_H
  13
  14 #define MAX_HID_DEVICES         5
  15 #define AMD_SFH_HID_VENDOR      0x1022
  16 #define AMD_SFH_HID_PRODUCT     0x0001
  17
  18 struct request_list {
  19         struct hid_device *hid;
  20         struct list_head list;
  21         u8 report_id;
  22         u8 sensor_idx;
  23         u8 report_type;
  24         u8 current_index;
  25 };
  26
  27 struct amd_input_data {
  28         u32 *sensor_virt_addr[MAX_HID_DEVICES];
  29         u8 *input_report[MAX_HID_DEVICES];
  30 };
  31
  32 struct amdtp_cl_data {
  33         u8 init_done;
  34         u32 cur_hid_dev;
  35         u32 hid_dev_count;
  36         u32 num_hid_devices;
  37         struct device_info *hid_devices;
  38         u8  *report_descr[MAX_HID_DEVICES];
  39         int report_descr_sz[MAX_HID_DEVICES];
  40         struct hid_device *hid_sensor_hubs[MAX_HID_DEVICES];
  41         u8 *hid_descr[MAX_HID_DEVICES];
  42         int hid_descr_size[MAX_HID_DEVICES];
  43         phys_addr_t phys_addr_base;
  44         dma_addr_t sensor_dma_addr[MAX_HID_DEVICES];
  45         u32 sensor_sts[MAX_HID_DEVICES];
  46         u32 sensor_requested_cnt[MAX_HID_DEVICES];
  47         u8 report_type[MAX_HID_DEVICES];
  48         u8 report_id[MAX_HID_DEVICES];
  49         u8 sensor_idx[MAX_HID_DEVICES];
  50         u8 *feature_report[MAX_HID_DEVICES];
  51         u8 request_done[MAX_HID_DEVICES];
  52         struct amd_input_data *in_data;
  53         struct delayed_work work;
  54         struct delayed_work work_buffer;
  55         struct request_list req_list;
  56 };
  57
  58 /**
  59  * struct amdtp_hid_data - Per instance HID data
  60  * @index:              Device index in the order of enumeration
  61  * @request_done:       Get Feature/Input report complete flag
  62  *                      used during get/set request from hid core
  63  * @cli_data:           Link to the client instance
  64  * @hid_wait:           Completion waitq
  65  *
  66  * Used to tie hid->driver data to driver client instance
  67  */
  68 struct amdtp_hid_data {
  69         int index;
  70         struct amdtp_cl_data *cli_data;
  71         wait_queue_head_t hid_wait;
  72 };
  73
  74 /* Interface functions between HID LL driver and AMD SFH client */
  75 void hid_amdtp_set_feature(struct hid_device *hid, char *buf, u32 len, int report_id);
  76 void hid_amdtp_get_report(struct hid_device *hid, int report_id, int report_type);
  77 int amdtp_hid_probe(u32 cur_hid_dev, struct amdtp_cl_data *cli_data);
  78 void amdtp_hid_remove(struct amdtp_cl_data *cli_data);
  79 int amd_sfh_get_report(struct hid_device *hid, int report_id, int report_type);
  80 void amd_sfh_set_report(struct hid_device *hid, int report_id, int report_type);
  81 void amdtp_hid_wakeup(struct hid_device *hid);
  82 #endif