/******************************************************************** *  M-U110Ⅱ+ printer/linux-driver/MU1102.c * *  Arca FCR1.2 platform PRN Driver. (Epson M-U110Ⅱ) *  Author: 葉華峰 *   Owner: START Technology Corp. *    Date: 2005.09.28 ********************************************************************/#include <linux/config.h>#include <linux/module.h>#include <linux/errno.h>#include <linux/signal.h>#include <linux/sched.h>#include <linux/timer.h>#include <linux/interrupt.h>#include <linux/serial.h>#include <linux/major.h>#include <linux/string.h>#include <linux/fcntl.h>#include <linux/ptrace.h>#include <linux/ioport.h>#include <linux/mm.h>#include <linux/slab.h>#include <linux/init.h>#include <linux/delay.h>#include <linux/fs.h>#include <linux/slab.h>#include <linux/spinlock.h>#include <linux/arca-chars.h>#include <asm/system.h>#include <asm/io.h>#include <asm/irq.h>#include <asm/uaccess.h>#include <asm/bitops.h>#include <asm/processor.h>#include <asm/hardware.h>/******************************************************************* ** ** *******************************************************************/#define  EM_EER      0#define  EM_OK       1#define PRNIORESET      0x19750000#define PRNIOBLKMARK    0x19750001#define PRNIONEWLINE    0x19750002#define PRNIOPAPERFW    0x19750003#define PRNIOPAPERFB    0x19750004#define PRNIOPOWEROFF	0x19750005#define PRN_TIMER (1 * HZ)#define DEBUG 0#if DEBUG#define dprintk(x...)	if (DEBUG) printk(x)#else#define dprintk(x...)#endif#if defined(CONFIG_ARCA_FCR12_PLATFORM)#define PRN_COIL_REG     0xaf000000#define PRN_CMOTOR_PORT1 0xaf400000#define PRN_CMOTOR_PORT2 0xaf600000#define PRN_PMOTOR_PORT1 0xaf800000#define PRN_PMOTOR_PORT2 0xafa00000#define PRN_STATUS_REG   0xafc00000#define PRN_IRQM_REG     0xafc00000#define STATUS_PMOTOR_READY  (1 << 6)   // 1左移6位 0100，0000#define STATUS_CMOTOR_READY  (1 << 5)   // 1左移6位 0010，0000#define STATUS_COIL_READY    (1 << 4)   // 1左移6位 0001，0000#define STATUS_BLACKMARK     (1 << 3)   // 1左移6位 0000，1000#define STATUS_PAPER_END     (1 << 2)   // 1左移6位 0000，0100#define STATUS_HOME_POSITION (1 << 1)   // 1左移6位 0000，0010#define STATUS_CARRIAGE_HOT  (1 << 0)   // 1左移6位 0000，0001#ifndef REG8#define REG8(n)          (*(volatile unsigned char *)(n))#endif#define EM_SET1(ucRegister,temp)  do {						ucRegister=(ucRegister|temp)		} while (0)#define EM_CLR0(ucRegister,temp) do {						ucRegister=(ucRegister&temp)		} while (0)#define __prn_pmotor_ready()  (REG8(PRN_STATUS_REG) & STATUS_PMOTOR_READY)#define __prn_cmotor_ready()  (REG8(PRN_STATUS_REG) & STATUS_CMOTOR_READY)#define __prn_coil_ready()    (REG8(PRN_STATUS_REG) & STATUS_COIL_READY)#define __prn_blackmark()     (!(REG8(PRN_STATUS_REG) & STATUS_BLACKMARK)//沒有中斷時為1。有中斷時為0#define __prn_paper_end()     (!(REG8(PRN_STATUS_REG) & STATUS_PAPER_END))#define __prn_carriage_hot()  (REG8(PRN_STATUS_REG) & STATUS_CARRIAGE_HOT)static volatile unsigned char prn_irq = 0;static unsigned char old_val=0;   /* For test */static unsigned char tmpp=0;      /* Nick *//* How many steps the c-motor will walk to print the current line. */static volatile int prn_line_max_steps=0;  #define _NEVER_BLOCK    (sigmask(SIGKILL) | sigmask(SIGSTOP))#define _DONT_BLOCK     (_NEVER_BLOCK | sigmask(SIGINT))/******************************************************************* **prn_irq為中斷標志寄存器   D0位字車電機中斷 **     D0位   字車電機中斷標志位   1:發生中斷    0：沒有中斷    **     D1位   給紙電機中斷標志位   1:發生中斷    0：沒有中斷 **     D2位   字車電機data2中斷標志位   1:發生中斷    0：沒有中斷  ** *******************************************************************/#define __prn_cmotor_irq_mask()			\do {						\	prn_irq |= 0x01;			\// D0位置1	REG8(PRN_STATUS_REG) = prn_irq;		\//REG8(abc)表示abc地址值	udelay(1);				\} while (0)#define __prn_cmotor_irq_unmask()		\do {						\	prn_irq &= ~0x01;			\// D0位置0	REG8(PRN_STATUS_REG) = prn_irq;		\	udelay(1);				\} while (0)#define __prn_cmotor_data2irq_mask()		\do {						\	prn_irq |= 0x04;			\	REG8(PRN_STATUS_REG) = prn_irq;		\	udelay(1);				\} while (0)#define __prn_cmotor_data2irq_unmask()		\do {						\	prn_irq &= ~0x04;			\	REG8(PRN_STATUS_REG) = prn_irq;		\	udelay(1);				\} while (0)#define __prn_pmotor_irq_mask()			\do {						\	prn_irq |= 0x02;			\	REG8(PRN_STATUS_REG) = prn_irq;		\	udelay(1);				\} while (0)#define __prn_pmotor_irq_unmask()		\do {						\	prn_irq &= ~0x02;			\	REG8(PRN_STATUS_REG) = prn_irq;		\	udelay(1);				\} while (0)#define __prn_irq_mask()			\do {				prn_irq |= 0x07;			\//有中斷發生D2D1D0 置111 有中斷發生	REG8(PRN_STATUS_REG) = prn_irq;		\	udelay(1);				\} while (0)#define __prn_pin_init()			\do {						\	__gpiob_as_intr(7);			\///??????????	__gpiob_set_irq_high_level(7);		\	udelay(1);				\} while(0)/******************************************************************* ** ** *******************************************************************/#define PRN_IRQ INTC_IRQ7#else#error "Not supported platform"#endif//電流標志static unsigned char off_i = 0x0c;static unsigned char hold_i = 0x08;static unsigned char prun_i  = 0x00;//給紙電機運行電流標志static unsigned char crun_i  = 0x00;//字車電機運行電流標志static volatile unsigned int cmotor_step = 0x80000000; /*volatile 在每次訪問時，其值被重載  */static volatile unsigned int pmotor_step = 0x80000000;static volatile unsigned char prn_state;static volatile unsigned char cmotor_direction = 0;static volatile unsigned char pmotor_direction = 0;static volatile unsigned int pmotor_steps;static unsigned char cmotor_const_param = 0;#define PRN_RST0             0x10  //#define PRN_RST1             0x20#define PRN_STANDBY          0x30	//	#define PRN_BLACKMARK        0x40   	//黑標#define PRN_NEWLINE          0x50   	//新行#define PRN_PRINTING         0x60   	//正在打印#define PRN_PAPERFETCH0      0x70#define PRN_PAPERFETCH1      0x80#define PRN_PAPERFETCH2      0x90#define MOTOR_STAT_STOP      0x00#define MOTOR_STAT_ACC       0x01#define MOTOR_STAT_CONST     0x02#define MOTOR_STAT_COIL      0x03	//？？？#define MOTOR_STAT_DEC       0x04#define MOTOR_STAT_WORKRUSH  0x05	//前rush	#define MOTOR_STAT_HOLDRUSH  0x06	//后rush#define MOTOR_STAT_STEP      0x07	//？？？#define NPMOTOR              0x01#define NCMOTOR              0x00							//prn_state的#define PRN_STATUS()         ((prn_state) & 0xf0)	//為高4位D7-D4#define MOTOR_STATUS()       (((prn_state) & 0x0f) >> 1)//為低前3位D3-D1#define MOTOR_NUM()          ((prn_state) & 0x01)       //位D0#define DATA2INTERUPT()        ((prn_state) & 0x10)	//位D4#define ENCODE_STATUS(prns, motors, motor)				\do {									\	prn_state = (prns) | ((motors) << 1) | ((motor) & 0x01);	\} while (0)static unsigned char prn_buffer[4096];/******************************************************************* ** ** *******************************************************************/static unsigned char motor_steps[] = { 0x00, 0x02, 0x03, 0x01 };//含義根據步數改變相位。								//因為4步為一個周期static unsigned char cmotor_acc[11] = {	58, 28, 22, 19, 17, 16, 15, 15, 14, 13, 12};static unsigned char cmotor_dec[11] = {	12, 13, 13, 14, 15, 17, 18, 21, 25, 32, 78};static unsigned char pmotor_acc[21] = {	82, 54, 42, 35, 31, 28, 26, 24, 23, 21, 20, 19, 19, 18, 17, 17,	16, 16, 15, 15, 15};static unsigned char pmotor_dec[3] = {	15, 20, 29};static volatile unsigned int coil_counter = 0;/******************************************************************* **  函數定義 ** *******************************************************************//* 通用函數定義 */static void EI_vDelay(UINT16 uiNum);/* 字車電機函數定義 */static void EI_vCMworkrush(void); static void EI_vCMHoldrush(void);  static void EI_vCMHold(void); static UINT8 EI_vCMIni(void);  static void EI_vCMIniRun(UINT8 ucDir);static void EI_vCMIniAcc(UINT8 ucDir);static void EI_vCMIniConst(UINT8 ucDir，UINT16 uiNum，UINT8 ucTest);static void EI_vCMIniDec(UINT8 ucDir);static void EI_vCMRun(UINT8 ucDir,UINT16 uiNum);static void EI_vCMAcc(UINT8 ucDir);static void EI_vCMConst(UINT8 ucDir);static void EI_vCMPrint(UINT8 ucDir);static void EI_vCMLow(UINT8 ucDir);static void EI_vCMDec(UINT8 ucDir);static void/* 給紙電機函數定義  */static void EI_vPFRun(UINT8 ucDir,UINT16 uiNum);static void EI_vPFworkrush(void); static void EI_vPFHoldrush(void);  static void EI_vPFHold(void); static void EI_vPFAcc(UINT8 ucDir); static void EI_vPFConst(UINT8 ucDir); static void EI_vPFDec(UINT8 ucDir); static void EI_vPFLow(UINT8 ucDir); /* 打印機驅動控制端口層函數定義   */static UINT8 EI_ucGetHPS(void);           //讀HPSstatic void EI_vCMProtI(UINT8 ucCur)		//CM電流保護static void EI_vCMPhOut(UINT8 ucPhase);   //置CM相位static void EI_vCMIOut(UINT8 ucCur);     //置CM電流static void EI_vSetTimer20(ucTime);      //置Timer20比較器時間static UINT8 EI_ucGetTimer20(void)static void EI_vCMIOut		字車電機電流輸出static void EI_vSetTimer20		置Timer20/***************************************************************** * 字車電機初始化各狀態函數 *****************************************************************///宏定義#define  EM_RushTime      //電機Rush時間                          // M-U110Ⅱ＋：5ms；M-U110：6ms；MU-130：6ms#define  EM_CMIniAorDStp //字車電機初始化時最大加、減步數#define  EM_CMIniConTime //字車電機初始化時勻速時間                         // M-U110Ⅱ＋：1.05ms；M-U110：1.05ms；MU-130：0.91ms                          //全局變量定義static UINT8 EG_MotorPh[4] = { 0x00, 0x02, 0x03, 0x01 };						static UINT8 EG_CMIniAccTM[10] = {58, 28, 22, 19, 17, 16, 15, 15, 14, 13, 12};static UINT8 EG_CMIniDecTM[10] = {12, 13, 13, 14, 15, 17, 18, 21, 25, 32, 78};static UINT8 EG_CMDirstatic UINT16 EG_CMNum=0x80000000   //字車電機位置                      static UINT8 EI_vCMIni(void){	UINT16 uiR=0;	if (!EI_ucGetHPS()) {		EI_vCMworkrush();			EI_vCMIniAcc(1);		uiR = EI_vCMIniConst(1,240, 1);		if (uiR==240){			print("Error: CM can not reset home position!\n");		  return EM_ERR;		}		EI_vCMIniConst(1, 22-EM_CMIniAorDStp, 0) 		EI_vCMIniDec(1);		EI_vCMHoldrush();			EI_vCMHold();		}	EI_vCMworkrush();		EI_vCMIniAcc(0);	EI_vCMIniConst(0, 32, 0)	EI_vCMIniDec(0);	EI_vCMHoldrush();		EI_vCMHold();	if (EI_ucGetHPS()){			print("Error: CM can not reset home position!\n");		  return EM_ERR;		}		EI_vCMworkrush();		EI_vCMIniAcc(1);	uiR = EI_vCMIniConst(1,32,1);	if (uiR==32){	print("Error: CM can not reset home position!\n");	return EM_ERR;		}	EI_vCMIniConst(1,12, 0) 	EI_vCMIniDec(1);	EI_vCMHoldrush();		EI_vCMHold();	if(EG_PaperType)    //		EG_CMNum=358;	else		EG_CMNum=420;		return EM_OK;}                          static void EI_vCMIniAcc(UINT8 ucDir);{ 	INT8 ucTime;	INT8 ucPhase;	INT8 cStep = (ucDir) ? 1 : -1; 	UINT16 uiI;	for (ucI=0;uiI<EM_CMIniAorDStp;uiI++) {        		EG_CMNum += cStep;		ucTime = EG_CMIniAccTM[uiI];		ucPhase = EG_MoterPh[EG_CMNum % 4];//	EI_vSetTimer20(ucTime);	EI_vCMPhOut(ucPhase);	while (!EI_ucGetTimer20())  //查詢中斷方式		EI_vDelay(500);	}}//初始化勻速階段static UINT16 EI_vCMIniConst(UINT8 ucDir，UINT16 uiNum，UINT8 ucTest){	INT8 ucTime;	INT8 ucPhase;	INT8 cStep = (ucDir) ? 1 : -1; 	UINT16 uiI;	for (ucI=0;uiI<uiNum;uiI++) {		if ((ucTest == 1) && (EI_vGetHPS()))	  			return ucI;                                		else if ((ucTest == 2) && (EI_vGetHPS())) 			return ucI;		EG_CMNum += cStep;		ucTime = EM_CMIniConTime;		ucPhase = EG_MoterPh[EG_CMNum % 4];	  EI_vSetTimer20(ucTime);	  EI_vCMPhOut(ucPhase);	}	return uiNum;  }//初始化減速階段static void EI_vCMIniDec(UINT8 ucDir){	INT8 ucTime;	INT8 ucPhase;	INT8 cStep = (ucDir) ? 1 : -1; 	UINT16 uiI;	for (ucI=0;uiI<EM_CMIniAorDStp;uiI++) {        		EG_CMNum += cStep;		ucTime = EG_CMIniDecTM[uiI];		ucPhase = EG_MoterPh[EG_CMNum % 4];//	EI_vSetTimer20(ucTime);	EI_vCMPhOut(ucPhase); }	return;}static void arca_prn_hp_hold(void){	unsigned char port2;	port2 = hold_i | motor_steps[cmotor_step % 4]; //must hold motor state  hold_i = 0x08	while (!__prn_cmotor_ready())		udelay(500);	REG8(PRN_CMOTOR_PORT2) = port2;        udelay (12000);	return;}/******************************************************************* ** **此rush函數用于減速或慢速后的rush狀態 *******************************************************************/static void arca_prn_hold_rush(void){	unsigned char port2;	port2 = crun_i | motor_steps[cmotor_step % 4]; //must hold motor state	while (!__prn_cmotor_ready())//REG8(PRN_STATUS_REG) & STATUS_CMOTOR_READY		udelay(500);	REG8(PRN_CMOTOR_PORT2) = port2;        udelay (6000);	return;}/******************************************************************* ** **此rush函數用于加速或慢速前的rush狀態，改變電流 *******************************************************************/static void arca_prn_work_rush(void){	unsigned char port2;	port2 = crun_i | motor_steps[cmotor_step % 4];  //must hold motor state	while (!__prn_cmotor_ready())		udelay(500);	REG8(PRN_CMOTOR_PORT2) = port2;        udelay (6000);	return;}/******************************************************************* ** **