audio_nbfrags = 2;		  		if (audio_nbfrags * audio_fragsize > 128 * 1024)			  		audio_nbfrags = 128 * 1024 / audio_fragsize;		  		if (audio_setup_buf(&output_stream))			  		return -ENOMEM;				}			if (file->f_mode & FMODE_READ) {				if (input_stream.buffers)					return -EBUSY;				get_user(val, (int *) arg);				audio_fragsize =  1 << (val & 0xFFFF);				if (audio_fragsize < 16)					audio_fragsize = 16;				if (audio_fragsize > 16384)                                        audio_fragsize = 16384;                                audio_nbfrags = (val >> 16) & 0x7FFF;                                if (audio_nbfrags < 2)                                        audio_nbfrags = 2;                                if (audio_nbfrags * audio_fragsize > 128 * 1024)                                        audio_nbfrags = 128 * 1024 / audio_fragsize;                                if (audio_setup_buf(&input_stream))                                        return -ENOMEM;			}		 	break;	  	case SNDCTL_DSP_SYNC:		  	return audio_sync(file);	  	case SNDCTL_DSP_GETOSPACE:		{			audio_stream_t *s = &output_stream;			audio_buf_info *inf = (audio_buf_info *) arg;			int err = verify_area(VERIFY_WRITE, inf, sizeof(*inf));			int i;			int frags = 0, bytes = 0;			if (err)				return err;			for (i = 0; i < s->nbfrags; i++) {				if (atomic_read(&s->buffers[i].sem.count) > 0) {					if (s->buffers[i].size == 0) frags++;					bytes += s->fragsize - s->buffers[i].size;				}			}			put_user(frags, &inf->fragments);			put_user(s->nbfrags, &inf->fragstotal);			put_user(s->fragsize, &inf->fragsize);			put_user(bytes, &inf->bytes);			break;		}		case SNDCTL_DSP_GETISPACE:		{			audio_stream_t *s = &input_stream;			audio_buf_info *inf = (audio_buf_info *) arg;			int err = verify_area(VERIFY_WRITE, inf, sizeof(*inf));			int i;			int frags = 0, bytes = 0;			if (!(file->f_mode & FMODE_READ))                                return -EINVAL;			if (err)				return err;			for(i = 0; i < s->nbfrags; i++){			if (atomic_read(&s->buffers[i].sem.count) > 0)                                {                                        if (s->buffers[i].size == s->fragsize)                                                frags++;                                        bytes += s->buffers[i].size;                                }                        }			put_user(frags, &inf->fragments);                        put_user(s->nbfrags, &inf->fragstotal);                        put_user(s->fragsize, &inf->fragsize);                        put_user(bytes, &inf->bytes);                        break;		}	  	case SNDCTL_DSP_RESET:			if (file->f_mode & FMODE_READ) {                                audio_clear_buf(&input_stream);                        }                        if (file->f_mode & FMODE_WRITE) {                                audio_clear_buf(&output_stream);                        }                        return 0;		case SNDCTL_DSP_NONBLOCK:			file->f_flags |= O_NONBLOCK;                        return 0;	 	case SNDCTL_DSP_POST:	      	case SNDCTL_DSP_SUBDIVIDE:	      	case SNDCTL_DSP_GETCAPS:	      	case SNDCTL_DSP_GETTRIGGER:	      	case SNDCTL_DSP_SETTRIGGER:	      	case SNDCTL_DSP_GETIPTR:	      	case SNDCTL_DSP_GETOPTR:	      	case SNDCTL_DSP_MAPINBUF:	      	case SNDCTL_DSP_MAPOUTBUF:	      	case SNDCTL_DSP_SETSYNCRO:	      	case SNDCTL_DSP_SETDUPLEX:		  	return -ENOSYS;	  	default:		  	return smdk2410_mixer_ioctl(inode, file, cmd, arg);	}	return 0;}static int smdk2410_audio_open(struct inode *inode, struct file *file){	int cold = !audio_active;	DPRINTK("audio_open\n");	if ((file->f_flags & O_ACCMODE) == O_RDONLY) {		if (audio_rd_refcount || audio_wr_refcount)			return -EBUSY;		audio_rd_refcount++;	} else if ((file->f_flags & O_ACCMODE) == O_WRONLY) {		if (audio_wr_refcount)			return -EBUSY;		audio_wr_refcount++;	} else if ((file->f_flags & O_ACCMODE) == O_RDWR) {		if (audio_rd_refcount || audio_wr_refcount)			return -EBUSY;		audio_rd_refcount++;		audio_wr_refcount++;	} else		return -EINVAL;	if (cold) {		audio_rate = AUDIO_RATE_DEFAULT;		audio_channels = AUDIO_CHANNELS_DEFAULT;		audio_fragsize = AUDIO_FRAGSIZE_DEFAULT;		audio_nbfrags = AUDIO_NBFRAGS_DEFAULT;		//by threewater 2003-12-8                if ((file->f_mode & (FMODE_WRITE|FMODE_READ))==(FMODE_WRITE|FMODE_READ)){                        init_s3c2410_iis_bus_rxtx();                        audio_clear_buf(&output_stream);			audio_clear_buf(&input_stream);                        DPRINTK("sounddev open write and read: by threewater\n");                }		else if ((file->f_mode & FMODE_WRITE)){			init_s3c2410_iis_bus_tx();			audio_clear_buf(&output_stream);        		DPRINTK("sounddev open write: by threewater\n");		}		else if ((file->f_mode & FMODE_READ)){			init_s3c2410_iis_bus_rx();			audio_clear_buf(&input_stream);        		DPRINTK("sounddev open read: by threewater\n");		}	}	MOD_INC_USE_COUNT;	return 0;}static int smdk2410_mixer_open(struct inode *inode, struct file *file){	MOD_INC_USE_COUNT;	return 0;}static int smdk2410_audio_release(struct inode *inode, struct file *file){	DPRINTK("audio_release\n");	if (file->f_mode & FMODE_READ) {		  	if (audio_rd_refcount == 1)				audio_clear_buf(&input_stream);			  	audio_rd_refcount = 0;	}	if(file->f_mode & FMODE_WRITE) {		  	if (audio_wr_refcount == 1) {			    	audio_sync(file);			    	audio_clear_buf(&output_stream);			    	audio_wr_refcount = 0;		    	}	  	}	MOD_DEC_USE_COUNT;	return 0;}static int smdk2410_mixer_release(struct inode *inode, struct file *file){	MOD_DEC_USE_COUNT;	return 0;}static struct file_operations smdk2410_audio_fops = {	llseek:		smdk2410_audio_llseek,	write:		smdk2410_audio_write,	read:		smdk2410_audio_read,	poll:		smdk2410_audio_poll,	ioctl:		smdk2410_audio_ioctl,	open:		smdk2410_audio_open,	release:	smdk2410_audio_release};static struct file_operations smdk2410_mixer_fops = {	ioctl:		smdk2410_mixer_ioctl,	open:		smdk2410_mixer_open,	release:	smdk2410_mixer_release};static void init_uda1341(void){	int flags;  	uda1341_volume = 62 - ((DEF_VOLUME * 61) / 100);	uda1341_boost = 0;  	uda_sampling = DATA2_DEEMP_NONE;	uda_sampling &= ~(DATA2_MUTE);		local_irq_save(flags);	write_gpio_bit(GPIO_L3MODE, 1);	write_gpio_bit(GPIO_L3CLOCK, 1);	local_irq_restore(flags);		uda1341_l3_address(UDA1341_REG_STATUS);        uda1341_l3_data(STAT0_SC_384FS | STAT0_IF_MSB);     // set 384 system clock, MSB        uda1341_l3_data(STAT1 | STAT1_DAC_GAIN | STAT1_ADC_GAIN | STAT1_ADC_ON | STAT1_DAC_ON);        uda1341_l3_address(UDA1341_REG_DATA0);	uda1341_l3_data(DATA0 |DATA0_VOLUME(uda1341_volume));  // maximum volume	uda1341_l3_data(DATA1 |DATA1_BASS(uda1341_boost)| DATA1_TREBLE(0));        uda1341_l3_data(uda_sampling); /* --;;*/ 	uda1341_l3_data(EXTADDR(EXT2));	//uda1341_l3_data(EXTDATA(EXT2_MIC_GAIN(0x6)) | EXT2_MIXMODE_CH1);	uda1341_l3_data(EXTDATA(EXT2_MIC_GAIN(0x6)| EXT2_MIXMODE_CH2));	uda1341_l3_data(EXTADDR(EXT5));	uda1341_l3_data(EXTDATA(0x7));}static void init_s3c2410_iis_bus_rx(void){		IISCON = 0;        IISMOD = 0;        IISFIFOC = 0;        /* 44 KHz , 384fs */        IISPSR = (IISPSR_A(iispsr_value(S_CLOCK_FREQ, 44100))                | IISPSR_B(iispsr_value(S_CLOCK_FREQ, 44100)));        IISCON = (IISCON_RX_DMA         /* Transmit DMA service request */                |IISCON_TX_IDLE         /* Receive Channel idle */                |IISCON_PRESCALE);      /* IIS Prescaler Enable */        IISMOD = (IISMOD_SEL_MA         /* Master mode */                | IISMOD_SEL_RX         /* Transmit */                | IISMOD_CH_RIGHT       /* Low for left channel */                | IISMOD_FMT_MSB        /* MSB-justified format */                | IISMOD_BIT_16         /* Serial data bit/channel is 16 bit */                | IISMOD_FREQ_384       /* Master clock freq = 384 fs */                | IISMOD_SFREQ_32);     /* 32 fs */        IISFIFOC = (IISFCON_RX_DMA      /* Transmit FIFO access mode: DMA */               );       /* Transmit FIFO enable */        IISCON |= IISCON_EN;            /* IIS enable(start) */}static void init_s3c2410_iis_bus_tx(void){        IISCON = 0;        IISMOD = 0;        IISFIFOC = 0;    	/* 44 KHz , 384fs */	IISPSR = (IISPSR_A(iispsr_value(S_CLOCK_FREQ, 44100)) 		| IISPSR_B(iispsr_value(S_CLOCK_FREQ, 44100)));	IISCON = (IISCON_TX_DMA		/* Transmit DMA service request */	  	|IISCON_RX_IDLE		/* Receive Channel idle */		|IISCON_PRESCALE);	/* IIS Prescaler Enable */ 	IISMOD = (IISMOD_SEL_MA         /* Master mode */  		| IISMOD_SEL_TX         /* Transmit */		| IISMOD_CH_RIGHT       /* Low for left channel */		| IISMOD_FMT_MSB        /* MSB-justified format */		| IISMOD_BIT_16         /* Serial data bit/channel is 16 bit */		| IISMOD_FREQ_384       /* Master clock freq = 384 fs */		| IISMOD_SFREQ_32);     /* 32 fs */	IISFIFOC = (IISFCON_TX_DMA      /* Transmit FIFO access mode: DMA */		| IISFCON_TX_EN);       /* Transmit FIFO enable */	IISCON |= IISCON_EN;		/* IIS enable(start) */}//add by threewater 2003-12-8static void init_s3c2410_iis_bus_rxtx(void){        IISCON = 0;        IISMOD = 0;        IISFIFOC = 0;    	/* 44 KHz , 384fs */	IISPSR = (IISPSR_A(iispsr_value(S_CLOCK_FREQ, 44100)) 		| IISPSR_B(iispsr_value(S_CLOCK_FREQ, 44100)));	IISCON = (IISCON_TX_DMA		/* Transmit DMA service request */	  	|IISCON_RX_DMA		/* Receive Channel idle */		|IISCON_PRESCALE);	/* IIS Prescaler Enable */ 	IISMOD = (IISMOD_SEL_MA         /* Master mode */  		| IISMOD_SEL_BOTH         /* Transmit and Receive mode*/		| IISMOD_CH_RIGHT       /* Low for left channel */		| IISMOD_FMT_MSB        /* MSB-justified format */		| IISMOD_BIT_16         /* Serial data bit/channel is 16 bit */		| IISMOD_FREQ_384       /* Master clock freq = 384 fs */		| IISMOD_SFREQ_32);     /* 32 fs */	IISFIFOC = (IISFCON_TX_DMA | IISFCON_RX_DMA      /* Transmit and receive FIFO : DMA */		| IISFCON_TX_EN);       /* Transmit and receive FIFO enable */	IISCON |= IISCON_EN;		/* IIS enable(start) */}static int __init audio_init_dma(audio_stream_t * s, char *desc){	if(s->dma_ch == DMA_CH2)		return s3c2410_request_dma("I2SSDO", s->dma_ch, audio_dmaout_done_callback, NULL);	else if(s->dma_ch == DMA_CH1)		return s3c2410_request_dma("I2SSDI", s->dma_ch, NULL ,audio_dmain_done_callback);		else		return 1;}static int audio_clear_dma(audio_stream_t * s){	s3c2410_free_dma(s->dma_ch);	return 0;}int __init s3c2410_uda1341_init(void){	unsigned long flags;	local_irq_save(flags);	/* GPB 4: L3CLOCK, OUTPUT */	set_gpio_ctrl(GPIO_L3CLOCK);	/* GPB 3: L3DATA, OUTPUT */	set_gpio_ctrl(GPIO_L3DATA);	/* GPB 2: L3MODE, OUTPUT */	set_gpio_ctrl(GPIO_L3MODE);	/* GPE 3: I2SSDI */	set_gpio_ctrl(GPIO_E3 | GPIO_PULLUP_EN | GPIO_MODE_I2SSDI);	/* GPE 0: I2SLRCK */	set_gpio_ctrl(GPIO_E0 | GPIO_PULLUP_EN | GPIO_MODE_I2SSDI);	/* GPE 1: I2SSCLK */	set_gpio_ctrl(GPIO_E1 | GPIO_PULLUP_EN | GPIO_MODE_I2SSCLK);	/* GPE 2: CDCLK */	set_gpio_ctrl(GPIO_E2 | GPIO_PULLUP_EN | GPIO_MODE_CDCLK);	/* GPE 4: I2SSDO */	set_gpio_ctrl(GPIO_E4 | GPIO_PULLUP_EN | GPIO_MODE_I2SSDO);	local_irq_restore(flags);	init_uda1341();	output_stream.dma_ch = DMA_CH2;	if (audio_init_dma(&output_stream, "UDA1341 out")) {		audio_clear_dma(&output_stream);		printk( KERN_WARNING AUDIO_NAME_VERBOSE 			": unable to get DMA channels\n" );		return -EBUSY;	}	input_stream.dma_ch = DMA_CH1;        if (audio_init_dma(&input_stream, "UDA1341 in")) {                audio_clear_dma(&input_stream);                printk( KERN_WARNING AUDIO_NAME_VERBOSE                        ": unable to get DMA channels\n" );                return -EBUSY;        }		audio_dev_dsp = register_sound_dsp(&smdk2410_audio_fops, -1);	audio_dev_mixer = register_sound_mixer(&smdk2410_mixer_fops, -1);	printk(AUDIO_NAME_VERBOSE " initialized\n");	return 0;}void __exit s3c2410_uda1341_exit(void){	unregister_sound_dsp(audio_dev_dsp);	unregister_sound_mixer(audio_dev_mixer);	audio_clear_dma(&output_stream);	audio_clear_dma(&input_stream); /* input */	printk(AUDIO_NAME_VERBOSE " unloaded\n");}module_init(s3c2410_uda1341_init);module_exit(s3c2410_uda1341_exit);