/****************************************************************************//* *	WTAudioOut.c -- audio driver for M5249 ColdFire internal audio. * *	(C) Copyright 2004, AKGU  *//****************************************************************************/#ifdef   MODULE#include <linux/module.h>#include <linux/version.h>#else#define MOD_INC_USE_COUNT#define MOD_DEC_USE_COUNT#endif#ifndef __KERNEL__#define __KERNEL__#endif#include <linux/config.h>#include <linux/types.h>#include <linux/kernel.h>#include <linux/init.h>#include <linux/fs.h>#include <linux/slab.h>#include <linux/wait.h>#include <linux/major.h>#include <linux/delay.h>#include <linux/soundcard.h>#include <linux/ioctl.h>#include <linux/mm.h>#include <asm/uaccess.h>#include <asm/param.h>#include <asm/dma.h>#include <asm/irq.h>#include <asm/page.h>#include <asm/io.h>#include <asm/semaphore.h>/****************************************************************************///#define DEBUG 1//#define MYDEBUG 1#ifdef DEBUG#define KDEBUG(fmt, args...) printk(fmt, ##args)#else#define KDEBUG(fmt, args...)	#endif//#define NOMAP//#define MYDEBUG 1/****************************************************************************///DATA TYPE DEFINE#define DWORD volatile  unsigned long#define BYTE  volatile  unsigned char#define WORD volatile unsigned short/****************************************************************************//* Whether include receive functions *///#define RX/*	You can choose to use either interrupt or DMA here. *	DMA will give you much better CPU utilitization... *///#define CONFIG_TXIRQ	1#define CONFIG_TXDMA	1//Only PDIR2 and PDOR3 registers support DMA//Both DMA1req and DMA0req can be routed to DMA channel 0 or DMA channel 1.//DMA Config Register Address(MBAR2+0x9f)//DMACon[1:0] = [DMA1REQ:DMA0REQ]  -- 0(PDIR2)... 1(PDOR3)#define INTBASE 128//#define	WTAUDIO_TXIRQ	(INTBASE+4)	/* Audio TX FIFO IRQ (IIS1) */                                                               /* WRITE TO FIFO IIS1 */                                                               #define	WTAUDIO_TXDMAIRQ	120	/* Audio TX DMA IRQ */#define	WTAUDIO_TXDMA		0	/* Audio TX DMA channel *//****************************************************************************//* *	Driver configurable settings.*///#define       BUFSIZE         (256*1024)      /* Audio buffer data size */#define ADSAMP_PER_PACK 	((508-4)*2+1)           //1包adpcm 的數據轉換成upcm給音頻芯片所需要聲請的緩沖區大小#define BUFSIZE 		(128*4*ADSAMP_PER_PACK)		 /* Audio buffer data size (緩沖區分成4塊進行DMA傳輸)*/#define DMASIZE                 (32*4*ADSAMP_PER_PACK)           /* DMA buffer maximum size （1/4 buffer）*/ #define PACKCOUNT               (BUFSIZE/ADSAMP_PER_PACK)	//緩沖區包個數#define DMACOUNT                (DMASIZE/ADSAMP_PER_PACK)	//DMA緩沖區最大包個數#define AUDIOOUTMAJOR	253#define FIELDNUM	6int WTAudio_txbusy,WTAudio_txdmaing,WTAudio_isopen;//struct semaphore sem;//BYTE DelayBuf[ADSAMP_PER_PACK];/****************************************************************************/#define IOC_MAGIC ('k')#define IOCASTOP _IO(IOC_MAGIC,0)#define IOCASTART _IO(IOC_MAGIC,1)#define IOCASPACKSIZE _IOW(IOC_MAGIC,2,int)#define IOCAGDEVBUFSTATUS _IOR(IOC_MAGIC,3,sizeof(WTDevBufStatus))#define IOCAGDEVSTATUS _IOR(IOC_MAGIC,4,sizeof(WTAudio_dev)) /****************************************************************************///***  base register define#define MCF_MBAR 0x10000000#define MCF_MBAR2 0x80000000/* *	Quick and easy access to the audio registers. (This optimizes *	nicely, since it will almost always be a constant pointer). */ //***   pointer for mem space#define	mcf32p(r)	((DWORD *) (r))#define	mcf16p(r)	((WORD *) (r))#define	mcf8p(r)	((BYTE *) (r))//***   pointer for mbar register#define	mcfReg32p(r)	(mcf32p(MCF_MBAR + (r)))#define	mcfReg16p(r)	(mcf16p(MCF_MBAR + (r)))#define	mcfReg8p(r) 	(mcf8p(MCF_MBAR + (r)))//***   pointer for 5249 mbar2 register#define	mcf2Reg32p(r)	(mcf32p(MCF_MBAR2 + (r)))#define	mcf2Reg16p(r)	(mcf16p(MCF_MBAR2 + (r)))#define	mcf2Reg8p(r) 	(mcf8p(MCF_MBAR2 + (r)))/* register define */#define   MCFSIM_IMR              0x44 /* Interrupt Mask reg (r/w) */#define	MCFSIM_ICRDMA0	0x52 /* DMA 0 ICR [ICR6]*/#define	MCFSIM_IMR_DMA0	0x4000		/* DMA 0 intr */#define	MCFSIM_ICRDMA1	0x53 /* DMA 1 ICR [ICR7]*/#define	MCFSIM_IMR_DMA1	0x8000		/* DMA 0 intr *//* *	Flags for the DMA configuration register. */#define	MCFA_DMA_0REQ		0x01		/* PDOR3 DMA on chan 0 */#define	MCFA_DMA_1REQ		0x02		/* PDOR3 DMA on chan 1 *//*	DMA register base mbr*/#define 	MCFDMA_INTVR0			0x314            /* DMA0 interrupt vec (r/w) */#define   MCFDAM_INTVR1               0x354		/* DMA1 interrupt vec (r/w) */#define	MCFA_IISCONFIG		0x10		/* IIS config regs (r/w) */#define	MCFA_IIS1CONFIG		0x10		/* IIS1 config reg (r/w) */#define	MCFA_IIS2CONFIG		0x14		/* IIS2 config reg (r/w) */#define	MCFA_IIS3CONFIG		0x18		/* IIS3 config reg (r/w) */#define	MCFA_IIS4CONFIG		0x1c		/* IIS4 config reg (r/w) */#define	MCFA_DATAINCTRL		0x30		/* Data in Control reg (r/w) *//* *	Bit definitions for the ICR family of registers. */#define	MCFSIM_ICR_AUTOVEC	0x80		/* Auto-vectored intr */#define	MCFSIM_ICR_LEVEL0	0x00		/* Level 0 intr */#define	MCFSIM_ICR_LEVEL1	0x04		/* Level 1 intr */#define	MCFSIM_ICR_LEVEL2	0x08		/* Level 2 intr */#define	MCFSIM_ICR_LEVEL3	0x0c		/* Level 3 intr */#define	MCFSIM_ICR_LEVEL4	0x10		/* Level 4 intr */#define	MCFSIM_ICR_LEVEL5	0x14		/* Level 5 intr */#define	MCFSIM_ICR_LEVEL6	0x18		/* Level 6 intr */#define	MCFSIM_ICR_LEVEL7	0x1c		/* Level 7 intr */#define	MCFSIM_ICR_PRI0		0x00		/* Priority 0 intr */#define	MCFSIM_ICR_PRI1		0x01		/* Priority 1 intr */#define	MCFSIM_ICR_PRI2		0x02		/* Priority 2 intr */#define	MCFSIM_ICR_PRI3		0x03		/* Priority 3 intr */#define	MCFA_DMACONF		0x9f		/* Audio DMA config (r/w) */#define	MCFSIM2_DMAROUTE	0x188		/* DMA routing */#define	MCFA_PDIR1L		0x34		/* Data in left #1 (r) */#define	MCFA_PDIR3L		0x44		/* Data in left #3 (r) */#define	MCFA_PDIR1R		0x54		/* Data in right #1 (r) */#define	MCFA_PDIR3R		0x64		/* Data in right #3 (r) */#define	MCFA_PDOR1L		0x34		/* Data out left #1 (w) */#define	MCFA_PDOR1R		0x44		/* Data out right #1 (w) */#define	MCFA_PDOR2L		0x54		/* Data out left #2 (w) */#define	MCFA_PDOR2R		0x64		/* Data out right #2 (w) */#define	MCFA_PDOR3		0x74		/* Data out l+r #3 (w) */#define	MCFA_PDIR2		       0x74		/* Data in l+r #2 (w) */#define	MCFA_INTENABLE		0x94		/* Interrupt enable (r/w) */#define	MCFA_INTCLEAR		0x98		/* Interrupt clear (w) */#define	MCFA_INTSTAT		0x98		/* Interupt status (r) *//* *	Flag defines for the IIS configuration registers. */#define	MCFA_IIS_EFCFLG		0x00040000	/* EF/CFLG insert */#define	MCFA_IIS_CFLGPOS	0x00020000	/* CFLG sample position */#define	MCFA_IIS_CLKINPUT	0x00000000	/* CLK is SCLK/LRCLK input */#define	MCFA_IIS_CLK24		0x00001000	/* CLK is AudioClk/24 */#define	MCFA_IIS_CLK16		0x00002000	/* CLK is AudioClk/16 */#define	MCFA_IIS_CLK12		0x00003000	/* CLK is AudioClk/12 */#define	MCFA_IIS_CLK8		0x00004000	/* CLK is AudioClk/8 */#define	MCFA_IIS_CLK6		0x00005000	/* CLK is AudioClk/6 */#define	MCFA_IIS_CLK4		0x00006000	/* CLK is AudioClk/4 */#define	MCFA_IIS_CLK3		0x00007000	/* CLK is AudioClk/3 */#define	MCFA_IIS_CLK2		0x0000c000	/* CLK is AudioClk/2 */#define	MCFA_IIS_CLKIIS1	0x00008000	/* CLK is IIS1 clock */#define	MCFA_IIS_CLKIIS2	0x00009000	/* CLK is IIS2 clock */#define	MCFA_IIS_CLKIIS3	0x0000a000	/* CLK is IIS3 clock */#define	MCFA_IIS_CLKIIS4	0x0000b000	/* CLK is IIS4 clock */#define	MCFA_IIS_FIFO		0x00000000	/* Normal FIFO operation */#define	MCFA_IIS_FIFO1		0x00000800	/* 1 sample FIFO mode */#define	MCFA_IIS_TXSRC_0	0x00000000	/* TX source is digital 0 */#define	MCFA_IIS_TXSRC_PDOR1	0x00000100	/* TX source is PDOR1 */#define	MCFA_IIS_TXSRC_PDOR2	0x00000200	/* TX source is PDOR2 */#define	MCFA_IIS_TXSRC_PDOR3	0x00000300	/* TX source is PDOR3 */#define	MCFA_IIS_TXSRC_IIS1	0x00000400	/* TX source is IIS1 in data */#define	MCFA_IIS_TXSRC_IIS3	0x00000500	/* TX source is IIS3 in data */#define	MCFA_IIS_TXSRC_IIS4	0x00000600	/* TX source is IIS4 in data */#define	MCFA_IIS_TXSRC_EBU	0x00000700	/* TX source is EBU in data */#define	MCFA_IIS_TXSRC_EBU2	0x00010000	/* TX source is EBU2 in data */#define	MCFA_IIS_16BIT		0x00000000	/* 16 bit samples */#define	MCFA_IIS_18BIT		0x00000040	/* 18 bit samples */#define	MCFA_IIS_20BIT		0x00000080	/* 20 bit samples */#define	MCFA_IIS_0BIT		0x000000c0	/* 0 sample */#define	MCFA_IIS_MODE_IIS	0x00000000	/* Philips IIS mode */#define	MCFA_IIS_MODE_EIAJ	0x00000000	/* Sony EIAJ mode */#define	MCFA_IIS_LRCK64BIT	0x00000010	/* LRCK frequency 64 bit clk */#define	MCFA_IIS_LRCK48BIT	0x00000008	/* LRCK frequency 48 bit clk */#define	MCFA_IIS_LRCK32BIT	0x00000000	/* LRCK frequency 32 bit clk */#define	MCFA_IIS_LRCKINV	0x00000002	/* Invert LRCK */#define	MCFA_IIS_SCLKINV	0x00000001	/* Invert SCLK *//* *	Data in Control register flags. */#define	MCFA_DIC_PDIR3_0	0x00800000	/* PDIR3 zero control */#define	MCFA_DIC_PDIR3_RESET	0x00400000	/* PDIR3 reset */#define	MCFA_DIC_PDIR3_1SAMP	0x00000000	/* PDIR3 full on 1 sample */#define	MCFA_DIC_PDIR3_2SAMP	0x00100000	/* PDIR3 full on 2 sample */#define	MCFA_DIC_PDIR3_3SAMP	0x00200000	/* PDIR3 full on 3 sample */#define	MCFA_DIC_PDIR3_6SAMP	0x00300000	/* PDIR3 full on 6 sample */#define	MCFA_DIC_PDIR3_OFF	0x00000000	/* PDIR3 Disabled */#define	MCFA_DIC_PDIR3_PDOR1	0x00010000	/* PDIR3 PDOR1 data */#define	MCFA_DIC_PDIR3_PDOR2	0x00020000	/* PDIR3 PDOR2 data */#define	MCFA_DIC_PDIR3_IIS1	0x00040000	/* PDIR3 IIS1 receiver data */#define	MCFA_DIC_PDIR3_IIS3	0x00050000	/* PDIR3 IIS3 receiver data */#define	MCFA_DIC_PDIR3_IIS4	0x00060000	/* PDIR3 IIS4 receiver data */#define	MCFA_DIC_PDIR3_EBU1	0x00070000	/* PDIR3 EBU1 receiver data */#define	MCFA_DIC_PDIR3_EBU2	0x00080000	/* PDIR3 EBU2 receiver data */#define	MCFA_DIC_PDIR2_1SAMP	0x00000000	/* PDIR2 full on 1 sample */#define	MCFA_DIC_PDIR2_2SAMP	0x00004000	/* PDIR2 full on 2 sample */#define	MCFA_DIC_PDIR2_3SAMP	0x00008000	/* PDIR2 full on 3 sample */#define	MCFA_DIC_PDIR2_6SAMP	0x0000c000	/* PDIR2 full on 6 sample */#define	MCFA_DIC_PDIR2_0	0x00000800	/* PDIR2 zero control */#define	MCFA_DIC_PDIR1_0	0x00000400	/* PDIR1 zero control */#define	MCFA_DIC_PDIR2_RESET	0x00000200	/* PDIR2 reset */#define	MCFA_DIC_PDIR1_RESET	0x00000100	/* PDIR1 reset */#define	MCFA_DIC_PDIR1_1SAMP	0x00000000	/* PDIR1 full on 1 sample */#define	MCFA_DIC_PDIR1_2SAMP	0x00000040	/* PDIR1 full on 2 sample */#define	MCFA_DIC_PDIR1_3SAMP	0x00000080	/* PDIR1 full on 3 sample */#define	MCFA_DIC_PDIR1_6SAMP	0x000000c0	/* PDIR1 full on 6 sample */#define	MCFA_DIC_PDIR2_OFF	0x00000000	/* PDIR2 disable */#define	MCFA_DIC_PDIR2_PDOR1	0x00000008	/* PDIR2 PDOR1 data */#define	MCFA_DIC_PDIR2_PDOR2	0x00000010	/* PDIR2 PDOR2 data */#define	MCFA_DIC_PDIR2_IIS1	0x00000020	/* PDIR2 IIS1 data */#define	MCFA_DIC_PDIR2_IIS3	0x00000028	/* PDIR2 IIS3 data */#define	MCFA_DIC_PDIR2_IIS4	0x00000030	/* PDIR2 IIS4 data */#define	MCFA_DIC_PDIR2_EBU1	0x00000038	/* PDIR2 EBU1 data */#define	MCFA_DIC_PDIR2_EBU2	0x00002000	/* PDIR2 EBU1 data */#define	MCFA_DIC_PDIR1_OFF	0x00000000	/* PDIR1 disable */#define	MCFA_DIC_PDIR1_PDOR1	0x00000001	/* PDIR1 PDOR1 data */#define	MCFA_DIC_PDIR1_PDOR2	0x00000002	/* PDIR1 PDOR2 data */#define	MCFA_DIC_PDIR1_IIS1	0x00000004	/* PDIR1 IIS1 data */#define	MCFA_DIC_PDIR1_IIS3	0x00000005	/* PDIR1 IIS3 data */#define	MCFA_DIC_PDIR1_IIS4	0x00000006	/* PDIR1 IIS4 data */#define	MCFA_DIC_PDIR1_EBU1	0x00000007	/* PDIR1 EBU1 data */#define	MCFA_DIC_PDIR1_EBU2	0x00001000	/* PDIR1 EBU2 data *///DMA REGISTER#define	MCFDMA_DCR0		0x308		/* DMA status reg (r/w) */#define	MCFDMA_DCR1		0x348		/* DMA status reg (r/w) */#define	MCFDMA_DSR0		0x310		/* DMA status reg (r/w) */#define	MCFDMA_DSR1		0x350		/* DMA status reg (r/w) */#define	MCFDMA_SAR0		0x300		/* DMA status reg (r/w) */#define	MCFDMA_SAR1		0x340		/* DMA status reg (r/w) */#define	MCFDMA_DAR0		0x304		/* DMA status reg (r/w) */#define	MCFDMA_DAR1		0x344		/* DMA status reg (r/w) */#define	MCFDMA_BCR0		0x30C		/* DMA status reg (r/w) */#define	MCFDMA_BCR1		0x34C		/* DMA status reg (r/w) *///#define	DMA0_STATUE(x)		(((*mcfReg8p(MCFDMA_DSR0))<<x)&0x01)//#define	DMA1_STATUE(x)		(((*mcfReg8p(MCFDMA_DSR1))<<x)&0x01)#define   DMA0_STATUE			(*mcfReg8p(MCFDMA_DSR0))#define   DMA1_STATUE			(*mcfReg8p(MCFDMA_DSR1))#define   DMA0_CTL				(*mcfReg32p(MCFDMA_DCR0))#define   DMA1_CTL				(*mcfReg32p(MCFDMA_DCR1))#define   DMA0_SA				(*mcfReg32p(MCFDMA_SAR0))#define   DMA1_SA				(*mcfReg32p(MCFDMA_SAR1))#define   DMA0_DA				(*mcfReg32p(MCFDMA_DAR0))#define   DMA1_DA				(*mcfReg32p(MCFDMA_DAR1))#define   DMA0_BC				(*mcfReg16p(MCFDMA_BCR0))#define   DMA1_BC				(*mcfReg16p(MCFDMA_BCR1))/* *	General purpose IO registers (in MBAR2). */#define	MCFSIM2_GPIOREAD	0x0		/* GPIO read values */#define	MCFSIM2_GPIOWRITE	0x4		/* GPIO write values */#define	MCFSIM2_GPIOENABLE	0x8		/* GPIO enabled */#define	MCFSIM2_GPIOFUNC	0xc		/* GPIO function */#define	MCFSIM2_GPIO1READ	0xb0		/* GPIO1 read values */#define	MCFSIM2_GPIO1WRITE	0xb4		/* GPIO1 write values */#define	MCFSIM2_GPIO1ENABLE	0xb8		/* GPIO1 enabled */#define	MCFSIM2_GPIO1FUNC	0xbc		/* GPIO1 function */#define	MCF_SDATAI3        0x00000200#define	MCF_SDATAI4        0x00000400/****************************************************************************/// audio devicetypedef struct WTAudio_dev{	int major;  	//int tx_irq;	    //中斷方式的中斷號 	int tx_nBufT;       //當前讀寫緩沖區位置指示(以包為單位) 	//int tx_nBufB;	    //當前讀寫緩沖區位置頭指示(以包為單位)  	int tx_nDmaStart;   //DMA讀寫緩沖區位置頭指示(以包為單位)		int tx_nDmaCount;   //DMA需要傳送的包個數	//unsigned long SysDelay;	unsigned long mmstart; //buffer base addr	unsigned long mmsize;  //mmsize = packsize*packcount	unsigned long dmasize; //dma buffer size  dmasize = packsize*dmacount	unsigned long packsize;	//adpcm:1009  upcm: 508	unsigned long mmcount;  // mmsize/packsize	unsigned long dmacount; // dmasize/packsize}WTAudio_dev;unsigned char * WTAudio_buf;WTAudio_dev AudioDev={AUDIOOUTMAJOR,//WTAUDIO_TXIRQ,			0,0,0,0,BUFSIZE,DMASIZE,ADSAMP_PER_PACK,PACKCOUNT,DMACOUNT};#define BUFFERINC(x,y,z)  ((x+y)%z)  //z: num of package  y: inc  x: indicatetypedef struct WTDevBufStatus{	int tx_nBufT;	//int tx_nBufB;	int tx_nDmaStart;}WTDevBufStatus;/****************************************************************************/void WTAudio_chipinit(void){#if DEBUG    printk("WTAudio_chipinit()\n");#endif    //*mcf2Reg32p(MCFA_IIS2CONFIG) = MCFA_IIS_CLK8 | MCFA_IIS_TXSRC_IIS1 |    //              MCFA_IIS_16BIT | MCFA_IIS_MODE_IIS | MCFA_IIS_LRCK32BIT;    //*mcf2Reg32p(MCFA_IIS1CONFIG) = MCFA_IIS_CLK8 | MCFA_IIS_TXSRC_PDOR3 |	//MCFA_IIS_16BIT | MCFA_IIS_MODE_IIS | MCFA_IIS_LRCK32BIT;