serial_vk32xx.h

vk3x系列串口扩展芯片在linux下的SPI接口驱动源码和测试应用程序源码

/*
*	VKIC Ltd.
*	by Huangwei
*/
#ifndef	_SERIAL_VK32XX_H
#define  _SERIAL_VK32XX_H
	
#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/console.h>
//#include <linux/serial_core.h>

#include <asm/irq.h>
#include <asm/hardware.h>

//EINT15 GPG7
//vk32xx rigister address defines
#define 	VK32XX_GCR      0X01
#define 	VK32XX_GUCR     0X02
#define		VK32XX_GIR     	0X03
#define 	VK32XX_XOFF     0X04
#define 	VK32XX_X0N      0X05

#define 	VK32XX_SCTLR    0X06
#define 	VK32XX_SCONR    0X07
#define 	VK32XX_SFWCR    0X08
#define 	VK32XX_SFOCR    0X09
#define 	VK32XX_SADR     0X0A
#define 	VK32XX_SIER     0X0B
#define 	VK32XX_SIFR     0X0C
#define 	VK32XX_SSR      0X0D
#define 	VK32XX_SFSR     0X0E
#define 	VK32XX_SFDR     0X0F

//vk32xx register bit defines
//GIR
#define 	VK32XX_U4IEN		0x80
#define 	VK32XX_U3IEN		0x40
#define 	VK32XX_U2IEN		0x20
#define 	VK32XX_U1IEN		0x10
#define 	VK32XX_U4IF		0x08
#define 	VK32XX_U3IF		0x04
#define 	VK32XX_U2IF		0x02
#define 	VK32XX_U1IF		0x01

//SIENR
#define 	VK32XX_RFIEN		0x01
#define 	VK32XX_TRIEN		0x02

//SSR
#define 	VK32XX_OE		0x80
#define		VK32XX_FE		0x40
#define 	VK32XX_PE		0x20
#define		VK32XX_RX8		0x10
#define 	VK32XX_TFFL 		0x08		//子串口发送FIFO 满标志
#define 	VK32XX_TFEM 		0x04		//子串口发送FIFO 空标志
#define 	VK32XX_TXBY 		0x02		//子串口发送TX 忙标志
#define 	VK32XX_RFEM 		0x01		//子串口接收FIFO 空标志

//SCTLR
#define 	VK32XX_UTEN		0x08

//SCONR
#define		VK32XX_SSTPL		0x80
#define 	VK32XX_SPAEN		0x40
#define 	VK32XX_SFPAEN		0x20
#define 	VK32XX_PAM1		0x10
#define 	VK32XX_PAM0		0x08

//SIFR
#define 	VK32XX_CTSR		0x80
#define		VK32XX_FOEINT		0x40
#define 	VK32XX_RAINT		0x20
#define 	VK32XX_XFINT		0x10
#define 	VK32XX_RSTINT		0X08
#define 	VK32XX_CTSINT		0x04
#define 	VK32XX_TFINT		0x02
#define 	VK32XX_RFINT		0x01

#define 	NR_PORTS 4


#define 	SERIAL_VK32XX_MAJOR	207
#define 	CALLOUT_VK32XX_MAJOR	208
	
#define 	MINOR_START		5

//vk32xx hardware configuration
#define 	IRQ_VK32XX		IRQ_EINT2//shuould be IRQ_EINT7,but EINT7 of the borad is ocuppied
#define 	VK_CS_PIN 		GPIO_G11//should be GPB
#define 	VK_CRASTAL_CLK		(3686400*2)
#define 	VK32_CS             (GPIO_MODE_OUT | GPIO_PULLUP_DIS | VK_CS_PIN)


//GPG11 IRQ_EINT19   :   VK_CS 
			//EINT2 ->B29
			//EINT19->B30

//
//		MOSI->A22
//		MISO->C21
//		CLK ->B21
//		CS -> A21

#define 	VK32XX_ISR_PASS_LIMIT	50

//#define _DEBUG_VK32XX


#endif