amd_sfh_pcie.h

  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 */
 32union 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
 50union 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
 63union 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
 72struct 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
 78enum sensor_idx {
 79	accel_idx = 0,
 80	gyro_idx = 1,
 81	mag_idx = 2,
 82	op_idx = 15,
 83	als_idx = 19
 84};
 85
 86enum mem_use_type {
 87	USE_DRAM,
 88	USE_C2P_REG,
 89};
 90
 91struct hpd_status {
 92	union {
 93		struct {
 94			u32 object_distance       : 16;
 95			u32 probablity		  : 8;
 96			u32 human_presence_actual : 4;
 97			u32 human_presence_report : 4;
 98		} shpd;
 99		u32 val;
100	};
101};
102
103int amd_mp2_get_sensor_num(struct amd_mp2_dev *privdata, u8 *sensor_id);
104int amd_sfh_hid_client_init(struct amd_mp2_dev *privdata);
105int amd_sfh_hid_client_deinit(struct amd_mp2_dev *privdata);
106void amd_sfh_set_desc_ops(struct amd_mp2_ops *mp2_ops);
107
108#endif