/*---------------------------------------------------------------------------- * * nsyadc.h - AD Converter header file. * * Author: Jesse Jiang <jiangxiaogen@sina.com> * Copyright (C) 2007~2008 *  * Updates history: * ----------------------------------------------------------- *   2007-07-21    Jesse Jiang   v1.0  initial *   2007-12-03    Jesse Jiang   fix the bug on queue management * * * Hardware:      MCU: Samsung S3C44B0X *                AD Converter: Burr-Brown ADS8344 * * OS:            uClinux version 2.4.20 * * * *----------------------------------------------------------------------------*/#ifndef __NSY_ADC_H_#define __NSY_ADC_H_#ifdef __KERNEL__#include <linux/time.h>   /* for timeval struct */#include <linux/ioctl.h>  /* for the _IOR macro to define the ioctl commands  */#endif/*----------------------------------------------------------------------------*//* Used to check the driver vs. userland program. * * If they have the same number, it means that 'struct ts_pen_info' and * 'struct adc_drv_params' have compatible semantics on both side. Otherwise * one side is outdated. * * The number has to be incremented if and only if updates in the driver lead * to any change in the semantics of these interface data structures (and not * if some internal mechanism of the driver are changed). *//* Userland programs can get this version number in params.version after * ioctl(fd, TS_PARAMS_GET, &params). Userland programs must specify their * version compatibility by setting version_req to S3C44B0TS_VERSION before * doing  ioctl(fd, TS_PARAMS_SET, &params). * * If version_req does not match, ioctl(fd, TS_PARAMS_SET, &params) would return * EBADRQC ('Invalid request code'). * * Note: *   it is not possible to check the compatibility for 'struct ts_pen_info' *   without doing an ioctl(fd, TS_PARAMS_SET, &params). So, please, do an *   ioctl(fd, TS_PARAMS_SET, &params)! *//*----------------------------------------------------------------------------*//* Definition for the ioctl of the driver *//* Device is type misc then major=10 */#define NSY_ADC_MAJOR  (10)#define ADC_VERSION    (100)#define ADC_PARAMS_GET _IOR(NSY_ADC_MAJOR, 0, struct adc_drv_params)#define ADC_PARAMS_SET _IOR(NSY_ADC_MAJOR, 1, struct adc_drv_params) enum Sensor_Type {	SNR_TYPE_DIGITAL	= 0, 	SNR_TYPE_ANALOG,	SNR_TYPE_UNKNOWN};enum Sensor_Mode {	SNR_MODE_COUNT  = 0,  SNR_MODE_DUR,	SNR_MODE_UNKNOWN};enum Sensor_Operation {	SNR_OPER_NORMAL  = 0,  SNR_OPER_LOCK,	SNR_OPER_UNKNOWN};#define SNR_IS_ON        (0x01)#define SNR_IS_OFF       (0x00)#define SNR_ID_UNKNOWN   (0xff)#define SNR_VAL_INVALID  (0xffff)/*----------------------------------------------------------------------------*//* Available info from pen position and status */struct adc_conv_info {  char  snr_channel;   /* channel ID            */  char  snr_type;      /* sensor type              */  unsigned short snr_value;     /* A/D conversion result */  struct timeval ad_timeval; /* time for A/D logging  */  };/* Structure that define touch screen parameters */typedef struct adc_cha_param{	char snr_online;  /* to indicate whether a sensor is  *	                   * online or offline                *	                   */		char snr_type;    /* sensor type: dialog or digital          */  char snr_mode;    /* only for digital sensor                 *                     * SNR_MODE_COUNT  : the count of pulse    *                     * SNR_MODE_DUR    : duration of a pulse   *                     * SNR_MODE_INVALID: invalid mode          *                     */  char snr_id;      /* the sensor identification        */  char snr_oper;    /* operation status                 *                     * SNR_OPER_NORMAL : normal         *                     * SNR_OPER_LOCK   :out of operation*                     */} T_SNR_PARAM;  struct adc_drv_params {  int version_req;    /* version number for check, returned by ADC_PARAMS_GET */  int sample_ms;      /* time interval between sampling (ms) */  int deglitch_on;    /* switch on or off deglitch functions */  int event_queue_on; /* switch on and off the event queue */  T_SNR_PARAM cha[6]; /* the struct parameter for the channel */};/* The item length in buffer queue */#define SNR_DATITEM_LEN       sizeof(struct adc_conv_info)#endif /* __NSY_ADC_H_ */