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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* AMD MP2 PCIe communication driver
* Copyright 2020-2021 Advanced Micro Devices, Inc.
* Authors: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
* Sandeep Singh <Sandeep.singh@amd.com>
* Basavaraj Natikar <Basavaraj.Natikar@amd.com>
*/
#ifndef PCIE_MP2_AMD_H
#define PCIE_MP2_AMD_H
#include <linux/pci.h>
#include "amd_sfh_hid.h"
#define PCI_DEVICE_ID_AMD_MP2 0x15E4
#define ENABLE_SENSOR 1
#define DISABLE_SENSOR 2
#define STOP_ALL_SENSORS 8
/* MP2 C2P Message Registers */
#define AMD_C2P_MSG0 0x10500
#define AMD_C2P_MSG1 0x10504
#define AMD_C2P_MSG2 0x10508
#define AMD_C2P_MSG(regno) (0x10500 + ((regno) * 4))
#define AMD_P2C_MSG(regno) (0x10680 + ((regno) * 4))
/* MP2 P2C Message Registers */
#define AMD_P2C_MSG3 0x1068C /* Supported Sensors info */
#define V2_STATUS 0x2
#define SENSOR_ENABLED 4
#define SENSOR_DISABLED 5
#define HPD_IDX 16
#define AMD_SFH_IDLE_LOOP 200
#define SENSOR_DISCOVERY_STATUS_MASK GENMASK(5, 3)
#define SENSOR_DISCOVERY_STATUS_SHIFT 3
/* SFH Command register */
union sfh_cmd_base {
u32 ul;
struct {
u32 cmd_id : 8;
u32 sensor_id : 8;
u32 period : 16;
} s;
struct {
u32 cmd_id : 4;
u32 intr_disable : 1;
u32 rsvd1 : 3;
u32 length : 7;
u32 mem_type : 1;
u32 sensor_id : 8;
u32 period : 8;
} cmd_v2;
};
union cmd_response {
u32 resp;
struct {
u32 status : 2;
u32 out_in_c2p : 1;
u32 rsvd1 : 1;
u32 response : 4;
u32 sub_cmd : 8;
u32 sensor_id : 6;
u32 rsvd2 : 10;
} response_v2;
};
union sfh_cmd_param {
u32 ul;
struct {
u32 buf_layout : 2;
u32 buf_length : 6;
u32 rsvd : 24;
} s;
};
struct sfh_cmd_reg {
union sfh_cmd_base cmd_base;
union sfh_cmd_param cmd_param;
phys_addr_t phys_addr;
};
enum sensor_idx {
accel_idx = 0,
gyro_idx = 1,
mag_idx = 2,
als_idx = 19
};
struct amd_mp2_dev {
struct pci_dev *pdev;
struct amdtp_cl_data *cl_data;
void __iomem *mmio;
const struct amd_mp2_ops *mp2_ops;
struct amd_input_data in_data;
/* mp2 active control status */
u32 mp2_acs;
};
struct amd_mp2_sensor_info {
u8 sensor_idx;
u32 period;
dma_addr_t dma_address;
};
enum mem_use_type {
USE_DRAM,
USE_C2P_REG,
};
struct hpd_status {
union {
struct {
u32 human_presence_report : 4;
u32 human_presence_actual : 4;
u32 probablity : 8;
u32 object_distance : 16;
} shpd;
u32 val;
};
};
void amd_start_sensor(struct amd_mp2_dev *privdata, struct amd_mp2_sensor_info info);
void amd_stop_sensor(struct amd_mp2_dev *privdata, u16 sensor_idx);
void amd_stop_all_sensors(struct amd_mp2_dev *privdata);
int amd_mp2_get_sensor_num(struct amd_mp2_dev *privdata, u8 *sensor_id);
int amd_sfh_hid_client_init(struct amd_mp2_dev *privdata);
int amd_sfh_hid_client_deinit(struct amd_mp2_dev *privdata);
u32 amd_sfh_wait_for_response(struct amd_mp2_dev *mp2, u8 sid, u32 sensor_sts);
void amd_mp2_suspend(struct amd_mp2_dev *mp2);
void amd_mp2_resume(struct amd_mp2_dev *mp2);
const char *get_sensor_name(int idx);
struct amd_mp2_ops {
void (*start)(struct amd_mp2_dev *privdata, struct amd_mp2_sensor_info info);
void (*stop)(struct amd_mp2_dev *privdata, u16 sensor_idx);
void (*stop_all)(struct amd_mp2_dev *privdata);
int (*response)(struct amd_mp2_dev *mp2, u8 sid, u32 sensor_sts);
void (*clear_intr)(struct amd_mp2_dev *privdata);
int (*init_intr)(struct amd_mp2_dev *privdata);
int (*discovery_status)(struct amd_mp2_dev *privdata);
};
#endif
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