CC1100的linux驱动源码

#include <linux/delay.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/irq.h> #include <linux/interrupt.h> #include <asm/uaccess.h> #include <mach/regs-gpio.h> #include <mach/hardware.h> #include <linux/platform_device.h> #include <linux/cdev.h> #include <linux/sched.h> #include <linux/gpio.h> #include <asm/irq.h> #include <mach/regs-gpio.h> #include <mach/hardware.h> #include <linux/mm.h> #include <linux/fs.h> #include <linux/types.h> #include <linux/delay.h> #include <linux/moduleparam.h> #include <linux/slab.h> #include <linux/errno.h> #include <linux/ioctl.h> #include <linux/cdev.h> #include <linux/string.h> #include <linux/list.h> #include <linux/pci.h> #include <linux/gpio.h> #include <asm/uaccess.h> #include <asm/atomic.h> #include <asm/unistd.h> #include <plat/regs-spi.h> #include <mach/regs-clock.h> #include "cc1100.h" //#undef DEBUG #define DEBUG #ifdef DEBUG #define DPRINTK(x...) printk(x); #else #define DPRINTK(x...) (void)(0) #endif //***************************************************************************************** #define DEVICE_NAME "cc1100" #define DEVICE_CNT 1 #define CC1100_SPCON0 (*(volatile unsigned long *)(base_addr + S3C2410_SPCON)) //SPI control #define CC1100_SPSTA0 (*(volatile unsigned long *)(base_addr + S3C2410_SPSTA)) //SPI STATUS #define CC1100_SPPIN0 (*(volatile unsigned long *)(base_addr + S3C2410_SPPIN)) //SPI ioctl #define CC1100_SPPRE0 (*(volatile unsigned long *)(base_addr + S3C2410_SPPRE)) //ADC conversion data 0 #define CC1100_SPTDAT0 (*(volatile unsigned long *)(base_addr + S3C2410_SPTDAT)) //ADC conversion data 1 #define CC1100_SPRDAT0 (*(volatile unsigned long *)(base_addr + S3C2410_SPRDAT)) //Stylus Up/Down interrupt status #define CC1100_SPI_READY ((CC1100_SPSTA0 & S3C2410_SPSTA_READY)== S3C2410_SPSTA_READY) #define CSnS s3c2410_gpio_setpin(S3C2410_GPG(2), 1) //SPI_NSSInternalSoftwareConfig(SPI1,SPI_NSSInternalSoft_Set) //cs=1 #define CSnR s3c2410_gpio_setpin(S3C2410_GPG(2), 0) //SPI_NSSInternalSoftwareConfig(SPI1,SPI_NSSInternalSoft_Reset) //cs=0 #define MISO s3c2410_gpio_getpin(S3C2410_GPE(11)) //MISO BIT #define GDO0 s3c2410_gpio_getpin(S3C2410_GPF(3)) //interrupt GPF3 #define SPI_BAUD 10000000 //10M unsigned char paTable[] = {0xC0};// 0dbm unsigned char paTableLen = 1; static void __iomem *base_addr; struct cc1100_irq_desc { int irq; int pin; int pin_setting; int number; char *name; }; #define MAX_BUF_LEN 1024 #define MAX_PKT_CNT 10 struct pkt{ unsigned int len; char buffer[MAX_BUF_LEN]; }; struct cir_buf{//receive circle buffer unsigned int rx_index; unsigned int wr_index; struct pkt pkt_arry[MAX_PKT_CNT]; }; struct chr_dev{ char send_flag; char opened; struct completion tx_cmp;//send finish struct cir_buf rx_buf; wait_queue_head_t rd_waitq; struct cdev dev; }; static struct cc1100_irq_desc cc1100_irqs = { IRQ_EINT3 , S3C2410_GPF(3) , S3C2410_GPF3_EINT3 , 0, "CC1100_IRQ" }; static unsigned long spi_pintable [] = { S3C2410_GPE(11),//MISO S3C2410_GPE(12),//MOSI S3C2410_GPE(13),//CLK S3C2410_GPG(2),//nCS S3C2410_GPF(3),//ENINT3 }; static unsigned int spi_pincfg [] = { S3C2410_GPE11_SPIMISO0, S3C2410_GPE12_SPIMOSI0, S3C2410_GPE13_SPICLK0, S3C2410_GPIO_OUTPUT, S3C2410_GPF3_EINT3, }; void TI_CC_Wait(unsigned int cycles) { mdelay(cycles); // 15 cycles consumed by overhead // 6 cycles consumed each iteration } static void cc1100_config(void); #define WAIT_MISO do{ int timer_out=0;\ while(MISO){\ if(timer_out++>5000){\ cc1100_config();\ return 0;}\ }}while(0) static void init_spi(void) { int i; for (i = 0; i < 5; i++) { s3c2410_gpio_cfgpin(spi_pintable[i], spi_pincfg[i]); s3c2410_gpio_setpin(spi_pintable[i], 1); } (*(unsigned long *)S3C2410_CLKCON)|=S3C2410_CLKCON_SPI; CC1100_SPPRE0=(unsigned long)50000000/(2*SPI_BAUD); CC1100_SPCON0= (S3C2410_SPCON_ENSCK| S3C2410_SPCON_MSTR ); CC1100_SPPIN0=S3C2410_SPPIN_KEEP; for(i=0;i<10;i++) { mdelay(10); while(!CC1100_SPI_READY); mdelay(10); CC1100_SPTDAT0=0xff; } while(!CC1100_SPI_READY); CC1100_SPTDAT0=0x00; mdelay(10); DPRINTK("spi init ok!\n"); } static unsigned char TI_CC_SendData(unsigned char data) { unsigned char temp; while(!CC1100_SPI_READY); CC1100_SPTDAT0=data; while(!CC1100_SPI_READY);//wait spi ready temp=CC1100_SPRDAT0; return temp; } /************************write one resigter*********************************/ static int TI_CC_SPIWriteReg(unsigned char addr, unsigned char value) { CSnR; WAIT_MISO; TI_CC_SendData(addr); TI_CC_SendData(value); CSnS; return 0; } /************************read one resigter*********************************/ static unsigned char TI_CC_SPIReadReg(unsigned char addr) { unsigned char dat1;//, temp; CSnR; WAIT_MISO; TI_CC_SendData(addr | 0x80); dat1 = TI_CC_SendData(0x00); //TI_CC_SendData(0x00) read data? CSnS; return (dat1); } /************************Write more one resigter*********************************/ static int TI_CC_SPIWriteBurstReg(unsigned char addr, unsigned char *buffer, unsigned char count) { unsigned char j;//,temp; CSnR; WAIT_MISO; TI_CC_SendData(addr | TI_CCxxx0_WRITE_BURST);//(temp); for (j = 0; j < count; j++) TI_CC_SendData(buffer[j]); CSnS; return 0; } /***********************Read more one resigter*********************************/ static int TI_CC_SPIReadBurstReg(unsigned char addr, unsigned char *buffer, unsigned char count) { unsigned char j;//,temp; CSnR; WAIT_MISO; TI_CC_SendData(addr | TI_CCxxx0_READ_BURST);//(temp); for (j = 0; j < count; j++){ buffer[j] = TI_CC_SendData(0x00); } CSnS; return 0; } static int TI_CC_SPIStrobe(unsigned char strobe) { CSnR; WAIT_MISO; TI_CC_SendData(strobe); CSnS; return 0; } /*切换至接收模式*/ static void SYS_setRxMode(void) { TI_CC_SPIStrobe(TI_CCxxx0_SIDLE); // Initialize CCxxxx to IDLE mode. TI_CC_SPIStrobe(TI_CCxxx0_SRX); // Initialize CCxxxx in RX mode. //PowerSwith=0; } /*切换至发送模式*/ /*static void SYS_setTxMode(void) { TI_CC_SPIStrobe(TI_CCxxx0_SIDLE); //0 TI_CC_SPIStrobe(TI_CCxxx0_SFTX); //将会发送载波 //PowerSwitch=1; //功率放大器开关 }*/ /*读取芯片状态*/ static unsigned char TI_CC_SPIReadStatus(unsigned char addr) { unsigned char dat1;//,temp; CSnR; WAIT_MISO; TI_CC_SendData(addr | TI_CCxxx0_READ_BURST);//(temp); dat1 = TI_CC_SendData(0x00); CSnS; return dat1; } /*射频部分配置*/ static void writeRFSettings(void) { TI_CC_SPIWriteReg(TI_CCxxx0_IOCFG2, 0x06); // GDO2 output pin config. TI_CC_SPIWriteReg(TI_CCxxx0_IOCFG0, 0x06); // GDO0 output pin config. printk("cc1100 io config reg:0x%x\n",TI_CC_SPIReadReg(TI_CCxxx0_IOCFG2));//测试SPI接口工作状态 TI_CC_SPIWriteReg(TI_CCxxx0_PKTLEN, 0xFF); // Packet length. TI_CC_SPIWriteReg(TI_CCxxx0_PKTCTRL1, 0x00); //?????,0x00??? 07 TI_CC_SPIWriteReg(TI_CCxxx0_PKTCTRL0, 0x05); // Packet automation control. 05 TI_CC_SPIWriteReg(TI_CCxxx0_ADDR, 0x02); // Device address. TI_CC_SPIWriteReg(TI_CCxxx0_CHANNR, 0x00); //* Channel number.*** * TI_CC_SPIWriteReg(TI_CCxxx0_FSCTRL1, 0x08); // *Freq synthesizer control.* TI_CC_SPIWriteReg(TI_CCxxx0_FSCTRL0, 0x00); // *Freq synthesizer control. * // TI_CC_SPIWriteReg(TI_CCxxx0_FREQ2, 0x0C); //* Freq control word, high byte//315M // TI_CC_SPIWriteReg(TI_CCxxx0_FREQ1, 0x1D); // *Freq control word, mid byte. // TI_CC_SPIWriteReg(TI_CCxxx0_FREQ0, 0x