258 lines
7.8 KiB
C
258 lines
7.8 KiB
C
/*
|
|
* Copyright (C) 2014, Samsung Electronics Co. Ltd. All Rights Reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
*/
|
|
|
|
#ifndef __SSP_SENSORHUB_H__
|
|
#define __SSP_SENSORHUB_H__
|
|
|
|
#include <linux/delay.h>
|
|
#include <linux/gpio.h>
|
|
#include <linux/iio/common/ssp_sensors.h>
|
|
#include <linux/iio/iio.h>
|
|
#include <linux/spi/spi.h>
|
|
|
|
#define SSP_DEVICE_ID 0x55
|
|
|
|
#ifdef SSP_DBG
|
|
#define ssp_dbg(format, ...) pr_info("[SSP] "format, ##__VA_ARGS__)
|
|
#else
|
|
#define ssp_dbg(format, ...)
|
|
#endif
|
|
|
|
#define SSP_SW_RESET_TIME 3000
|
|
/* Sensor polling in ms */
|
|
#define SSP_DEFAULT_POLLING_DELAY 200
|
|
#define SSP_DEFAULT_RETRIES 3
|
|
#define SSP_DATA_PACKET_SIZE 960
|
|
#define SSP_HEADER_BUFFER_SIZE 4
|
|
|
|
enum {
|
|
SSP_KERNEL_BINARY = 0,
|
|
SSP_KERNEL_CRASHED_BINARY,
|
|
};
|
|
|
|
enum {
|
|
SSP_INITIALIZATION_STATE = 0,
|
|
SSP_NO_SENSOR_STATE,
|
|
SSP_ADD_SENSOR_STATE,
|
|
SSP_RUNNING_SENSOR_STATE,
|
|
};
|
|
|
|
/* Firmware download STATE */
|
|
enum {
|
|
SSP_FW_DL_STATE_FAIL = -1,
|
|
SSP_FW_DL_STATE_NONE = 0,
|
|
SSP_FW_DL_STATE_NEED_TO_SCHEDULE,
|
|
SSP_FW_DL_STATE_SCHEDULED,
|
|
SSP_FW_DL_STATE_DOWNLOADING,
|
|
SSP_FW_DL_STATE_SYNC,
|
|
SSP_FW_DL_STATE_DONE,
|
|
};
|
|
|
|
#define SSP_INVALID_REVISION 99999
|
|
#define SSP_INVALID_REVISION2 0xffffff
|
|
|
|
/* AP -> SSP Instruction */
|
|
#define SSP_MSG2SSP_INST_BYPASS_SENSOR_ADD 0xa1
|
|
#define SSP_MSG2SSP_INST_BYPASS_SENSOR_RM 0xa2
|
|
#define SSP_MSG2SSP_INST_REMOVE_ALL 0xa3
|
|
#define SSP_MSG2SSP_INST_CHANGE_DELAY 0xa4
|
|
#define SSP_MSG2SSP_INST_LIBRARY_ADD 0xb1
|
|
#define SSP_MSG2SSP_INST_LIBRARY_REMOVE 0xb2
|
|
#define SSP_MSG2SSP_INST_LIB_NOTI 0xb4
|
|
#define SSP_MSG2SSP_INST_LIB_DATA 0xc1
|
|
|
|
#define SSP_MSG2SSP_AP_MCU_SET_GYRO_CAL 0xcd
|
|
#define SSP_MSG2SSP_AP_MCU_SET_ACCEL_CAL 0xce
|
|
#define SSP_MSG2SSP_AP_STATUS_SHUTDOWN 0xd0
|
|
#define SSP_MSG2SSP_AP_STATUS_WAKEUP 0xd1
|
|
#define SSP_MSG2SSP_AP_STATUS_SLEEP 0xd2
|
|
#define SSP_MSG2SSP_AP_STATUS_RESUME 0xd3
|
|
#define SSP_MSG2SSP_AP_STATUS_SUSPEND 0xd4
|
|
#define SSP_MSG2SSP_AP_STATUS_RESET 0xd5
|
|
#define SSP_MSG2SSP_AP_STATUS_POW_CONNECTED 0xd6
|
|
#define SSP_MSG2SSP_AP_STATUS_POW_DISCONNECTED 0xd7
|
|
#define SSP_MSG2SSP_AP_TEMPHUMIDITY_CAL_DONE 0xda
|
|
#define SSP_MSG2SSP_AP_MCU_SET_DUMPMODE 0xdb
|
|
#define SSP_MSG2SSP_AP_MCU_DUMP_CHECK 0xdc
|
|
#define SSP_MSG2SSP_AP_MCU_BATCH_FLUSH 0xdd
|
|
#define SSP_MSG2SSP_AP_MCU_BATCH_COUNT 0xdf
|
|
|
|
#define SSP_MSG2SSP_AP_WHOAMI 0x0f
|
|
#define SSP_MSG2SSP_AP_FIRMWARE_REV 0xf0
|
|
#define SSP_MSG2SSP_AP_SENSOR_FORMATION 0xf1
|
|
#define SSP_MSG2SSP_AP_SENSOR_PROXTHRESHOLD 0xf2
|
|
#define SSP_MSG2SSP_AP_SENSOR_BARCODE_EMUL 0xf3
|
|
#define SSP_MSG2SSP_AP_SENSOR_SCANNING 0xf4
|
|
#define SSP_MSG2SSP_AP_SET_MAGNETIC_HWOFFSET 0xf5
|
|
#define SSP_MSG2SSP_AP_GET_MAGNETIC_HWOFFSET 0xf6
|
|
#define SSP_MSG2SSP_AP_SENSOR_GESTURE_CURRENT 0xf7
|
|
#define SSP_MSG2SSP_AP_GET_THERM 0xf8
|
|
#define SSP_MSG2SSP_AP_GET_BIG_DATA 0xf9
|
|
#define SSP_MSG2SSP_AP_SET_BIG_DATA 0xfa
|
|
#define SSP_MSG2SSP_AP_START_BIG_DATA 0xfb
|
|
#define SSP_MSG2SSP_AP_SET_MAGNETIC_STATIC_MATRIX 0xfd
|
|
#define SSP_MSG2SSP_AP_SENSOR_TILT 0xea
|
|
#define SSP_MSG2SSP_AP_MCU_SET_TIME 0xfe
|
|
#define SSP_MSG2SSP_AP_MCU_GET_TIME 0xff
|
|
|
|
#define SSP_MSG2SSP_AP_FUSEROM 0x01
|
|
|
|
/* voice data */
|
|
#define SSP_TYPE_WAKE_UP_VOICE_SERVICE 0x01
|
|
#define SSP_TYPE_WAKE_UP_VOICE_SOUND_SOURCE_AM 0x01
|
|
#define SSP_TYPE_WAKE_UP_VOICE_SOUND_SOURCE_GRAMMER 0x02
|
|
|
|
/* Factory Test */
|
|
#define SSP_ACCELEROMETER_FACTORY 0x80
|
|
#define SSP_GYROSCOPE_FACTORY 0x81
|
|
#define SSP_GEOMAGNETIC_FACTORY 0x82
|
|
#define SSP_PRESSURE_FACTORY 0x85
|
|
#define SSP_GESTURE_FACTORY 0x86
|
|
#define SSP_TEMPHUMIDITY_CRC_FACTORY 0x88
|
|
#define SSP_GYROSCOPE_TEMP_FACTORY 0x8a
|
|
#define SSP_GYROSCOPE_DPS_FACTORY 0x8b
|
|
#define SSP_MCU_FACTORY 0x8c
|
|
#define SSP_MCU_SLEEP_FACTORY 0x8d
|
|
|
|
/* SSP -> AP ACK about write CMD */
|
|
#define SSP_MSG_ACK 0x80 /* ACK from SSP to AP */
|
|
#define SSP_MSG_NAK 0x70 /* NAK from SSP to AP */
|
|
|
|
struct ssp_sensorhub_info {
|
|
char *fw_name;
|
|
char *fw_crashed_name;
|
|
unsigned int fw_rev;
|
|
const u8 * const mag_table;
|
|
const unsigned int mag_length;
|
|
};
|
|
|
|
/* ssp_msg options bit */
|
|
#define SSP_RW 0
|
|
#define SSP_INDEX 3
|
|
|
|
#define SSP_AP2HUB_READ 0
|
|
#define SSP_AP2HUB_WRITE 1
|
|
#define SSP_HUB2AP_WRITE 2
|
|
#define SSP_AP2HUB_READY 3
|
|
#define SSP_AP2HUB_RETURN 4
|
|
|
|
/**
|
|
* struct ssp_data - ssp platformdata structure
|
|
* @spi: spi device
|
|
* @sensorhub_info: info about sensorhub board specific features
|
|
* @wdt_timer: watchdog timer
|
|
* @work_wdt: watchdog work
|
|
* @work_firmware: firmware upgrade work queue
|
|
* @work_refresh: refresh work queue for reset request from MCU
|
|
* @shut_down: shut down flag
|
|
* @mcu_dump_mode: mcu dump mode for debug
|
|
* @time_syncing: time syncing indication flag
|
|
* @timestamp: previous time in ns calculated for time syncing
|
|
* @check_status: status table for each sensor
|
|
* @com_fail_cnt: communication fail count
|
|
* @reset_cnt: reset count
|
|
* @timeout_cnt: timeout count
|
|
* @available_sensors: available sensors seen by sensorhub (bit array)
|
|
* @cur_firm_rev: cached current firmware revision
|
|
* @last_resume_state: last AP resume/suspend state used to handle the PM
|
|
* state of ssp
|
|
* @last_ap_state: (obsolete) sleep notification for MCU
|
|
* @sensor_enable: sensor enable mask
|
|
* @delay_buf: data acquisition intervals table
|
|
* @batch_latency_buf: yet unknown but existing in communication protocol
|
|
* @batch_opt_buf: yet unknown but existing in communication protocol
|
|
* @accel_position: yet unknown but existing in communication protocol
|
|
* @mag_position: yet unknown but existing in communication protocol
|
|
* @fw_dl_state: firmware download state
|
|
* @comm_lock: lock protecting the handshake
|
|
* @pending_lock: lock protecting pending list and completion
|
|
* @mcu_reset_gpio: mcu reset line
|
|
* @ap_mcu_gpio: ap to mcu gpio line
|
|
* @mcu_ap_gpio: mcu to ap gpio line
|
|
* @pending_list: pending list for messages queued to be sent/read
|
|
* @sensor_devs: registered IIO devices table
|
|
* @enable_refcount: enable reference count for wdt (watchdog timer)
|
|
* @header_buffer: cache aligned buffer for packet header
|
|
*/
|
|
struct ssp_data {
|
|
struct spi_device *spi;
|
|
const struct ssp_sensorhub_info *sensorhub_info;
|
|
struct timer_list wdt_timer;
|
|
struct work_struct work_wdt;
|
|
struct delayed_work work_refresh;
|
|
|
|
bool shut_down;
|
|
bool mcu_dump_mode;
|
|
bool time_syncing;
|
|
int64_t timestamp;
|
|
|
|
int check_status[SSP_SENSOR_MAX];
|
|
|
|
unsigned int com_fail_cnt;
|
|
unsigned int reset_cnt;
|
|
unsigned int timeout_cnt;
|
|
|
|
unsigned int available_sensors;
|
|
unsigned int cur_firm_rev;
|
|
|
|
char last_resume_state;
|
|
char last_ap_state;
|
|
|
|
unsigned int sensor_enable;
|
|
u32 delay_buf[SSP_SENSOR_MAX];
|
|
s32 batch_latency_buf[SSP_SENSOR_MAX];
|
|
s8 batch_opt_buf[SSP_SENSOR_MAX];
|
|
|
|
int accel_position;
|
|
int mag_position;
|
|
int fw_dl_state;
|
|
|
|
struct mutex comm_lock;
|
|
struct mutex pending_lock;
|
|
|
|
int mcu_reset_gpio;
|
|
int ap_mcu_gpio;
|
|
int mcu_ap_gpio;
|
|
|
|
struct list_head pending_list;
|
|
|
|
struct iio_dev *sensor_devs[SSP_SENSOR_MAX];
|
|
atomic_t enable_refcount;
|
|
|
|
__le16 header_buffer[SSP_HEADER_BUFFER_SIZE / sizeof(__le16)]
|
|
____cacheline_aligned;
|
|
};
|
|
|
|
void ssp_clean_pending_list(struct ssp_data *data);
|
|
|
|
int ssp_command(struct ssp_data *data, char command, int arg);
|
|
|
|
int ssp_send_instruction(struct ssp_data *data, u8 inst, u8 sensor_type,
|
|
u8 *send_buf, u8 length);
|
|
|
|
int ssp_irq_msg(struct ssp_data *data);
|
|
|
|
int ssp_get_chipid(struct ssp_data *data);
|
|
|
|
int ssp_set_magnetic_matrix(struct ssp_data *data);
|
|
|
|
unsigned int ssp_get_sensor_scanning_info(struct ssp_data *data);
|
|
|
|
unsigned int ssp_get_firmware_rev(struct ssp_data *data);
|
|
|
|
int ssp_queue_ssp_refresh_task(struct ssp_data *data, unsigned int delay);
|
|
|
|
#endif /* __SSP_SENSORHUB_H__ */
|