Aquaris-M10-4G/drivers/misc/mediatek/heart_rate_sensor/heart_rate.h

#ifndef __HEART_RATE_H__
#define __HEART_RATE_H__


#include <linux/wakelock.h>
#include <linux/interrupt.h>
#include <linux/miscdevice.h>
#include <linux/platform_device.h>
#include <linux/input.h>
#include <linux/workqueue.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/hwmsensor.h>
#include <linux/earlysuspend.h>
#include <linux/hwmsen_dev.h>


#define HRM_TAG					"<HEART_RATE> "
#define HRM_FUN(f)				printk(HRM_TAG"%s\n", __func__)
#define HRM_ERR(fmt, args...)	printk(HRM_TAG"%s %d : "fmt, __func__, __LINE__, ##args)
#define HRM_LOG(fmt, args...)	printk(HRM_TAG fmt, ##args)
#define HRM_VER(fmt, args...)   printk(HRM_TAG"%s: "fmt, __func__, ##args)	/* ((void)0) */

#define OP_HRM_DELAY	0X01
#define	OP_HRM_ENABLE	0X02
#define	OP_HRM_GET_DATA	0X04

#define HRM_INVALID_VALUE -1

#define EVENT_TYPE_HRM_BPM		ABS_X
#define EVENT_TYPE_HRM_STATUS		ABS_Y


#define HRM_VALUE_MAX (32767)
#define HRM_VALUE_MIN (-32768)
#define HRM_STATUS_MIN (0)
#define HRM_STATUS_MAX (64)
#define HRM_DIV_MAX (32767)
#define HRM_DIV_MIN (1)

#define MAX_CHOOSE_HRM_NUM 5

struct hrm_control_path {
	int (*open_report_data)(int open);	/* open data rerport to HAL */
	int (*enable_nodata)(int en);	/* only enable not report event to HAL */
	int (*set_delay)(u64 delay);
	bool is_report_input_direct;
	bool is_support_batch;
};

typedef struct {
	uint32_t bpm;		/* BPM * 1000 */
	uint32_t status;	/* freq*1000 */
} heart_rate_t;

struct hrm_data_path {
	int (*get_data)(u32 *value, int *status);
	int vender_div;
};

struct hrm_init_info {
	char *name;
	int (*init)(void);
	int (*uninit)(void);
	struct platform_driver *platform_diver_addr;
};

struct hrm_data {
	hwm_sensor_data hrm_data;
	int data_updata;
	/* struct mutex lock; */
};

struct hrm_drv_obj {
	void *self;
	int polling;
	int (*hrm_operate)(void *self, uint32_t command, void *buff_in, int size_in,
			    void *buff_out, int size_out, int *actualout);
};

struct hrm_context {
	struct input_dev *idev;
	struct miscdevice mdev;
	struct work_struct report;
	struct mutex hrm_op_mutex;
	atomic_t delay;		/*polling period for reporting input event */
	atomic_t wake;		/*user-space request to wake-up, used with stop */
	struct timer_list timer;	/* polling timer */
	atomic_t trace;

	struct early_suspend early_drv;
	atomic_t early_suspend;
	struct hrm_data drv_data;
	struct hrm_control_path hrm_ctl;
	struct hrm_data_path hrm_data;
	bool is_active_nodata;	/* Active, but HAL don't need data sensor. such as orientation need */
	bool is_active_data;	/* Active and HAL need data . */
	bool is_first_data_after_enable;
	bool is_polling_run;
	bool is_batch_enable;
};

/* driver API for internal */
/* extern int hrm_enable_nodata(int enable); */
/* extern int hrm_attach(struct hrm_drv_obj *obj); */
/* driver API for third party vendor */

/* for auto detect */
extern int hrm_driver_add(struct hrm_init_info *obj);
extern int hrm_data_report(hwm_sensor_data data, int status);
extern int hrm_register_control_path(struct hrm_control_path *ctl);
extern int hrm_register_data_path(struct hrm_data_path *data);
#endif