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++;} elsereturn -EINVAL;if (cold) {audio_rate = AUDIO_RATE_DEFAULT;audio_channels = AUDIO_CHANNELS_DEFAULT;audio_fragsize = AUDIO_FRAGSIZE_DEFAULT;audio_nbfrags = AUDIO_NBFRAGS_DEFAULT;if ((file->f_mode & FMODE_WRITE)){init_s3c2410_iis_bus_tx();audio_clear_buf(&output_stream);}if ((file->f_mode & FMODE_READ)){init_s3c2410_iis_bus_rx();audio_clear_buf(&input_stream);}}return 0;}static int smdk2410_mixer_open(struct inode *inode, struct file *file){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;}}return 0;}static int smdk2410_mixer_release(struct inode *inode, struct file *file){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){       /* GPB 4: L3CLOCK */       /* GPB 3: L3DATA */       /* GPB 2: L3MODE */        unsigned long flags;        uda1341_volume = 62 - ((DEF_VOLUME * 61) / 100);        uda1341_boost = 0;//        uda_sampling = DATA2_DEEMP_NONE;//        uda_sampling &= ~(DATA2_MUTE);        local_irq_save(flags);        s3c2410_gpio_setpin(S3C2410_GPB2,1);//L3MODE=1        s3c2410_gpio_setpin(S3C2410_GPB4,1);//L3CLOCK=1        local_irq_restore(flags);        uda1341_l3_address(UDA1341_REG_STATUS);        uda1341_l3_data(0x40 | STAT0_SC_384FS | STAT0_IF_MSB|STAT0_DC_FILTER); // reset uda1341        uda1341_l3_data(STAT1 | STAT1_ADC_ON | STAT1_DAC_ON);        uda1341_l3_address(UDA1341_REG_DATA0);        uda1341_l3_data(DATA0 |DATA0_VOLUME(0x0)); // maximum volume        uda1341_l3_data(DATA1 |DATA1_BASS(uda1341_boost)| DATA1_TREBLE(0));        uda1341_l3_data((DATA2 |DATA2_DEEMP_NONE) &~(DATA2_MUTE));        uda1341_l3_data(EXTADDR(EXT2));        uda1341_l3_data(EXTDATA(EXT2_MIC_GAIN(0x6)) | EXT2_MIXMODE_CH1);//input channel 1 select(input channel 2 off)}static void init_s3c2410_iis_bus(void){        writel(0, iis_base + S3C2410_IISPSR);        writel(0, iis_base + S3C2410_IISCON);        writel(0, iis_base + S3C2410_IISMOD);        writel(0, iis_base + S3C2410_IISFCON);        clk_disable(iis_clock);}static void init_s3c2410_iis_bus_rx(void){unsigned int iiscon, iismod, iisfcon;char *dstr;//Kill everything...writel(0, iis_base + S3C2410_IISPSR);writel(0, iis_base + S3C2410_IISCON);writel(0, iis_base + S3C2410_IISMOD);writel(0, iis_base + S3C2410_IISFCON);clk_enable(iis_clock);iiscon = iismod = iisfcon = 0;//Setup basic stuffiiscon |= S3C2410_IISCON_PSCEN; // Enable prescaleriiscon |= S3C2410_IISCON_IISEN; // Enable interfaceiismod |= S3C2410_IISMOD_MASTER; // Set interface to Master Modeiismod |= S3C2410_IISMOD_LR_LLOW; // Low for left channeliismod |= S3C2410_IISMOD_MSB; // IIS formatiismod |= S3C2410_IISMOD_16BIT; // Serial data bit/channel is 16 bitiismod |= S3C2410_IISMOD_384FS; // Master clock freq = 384 fsiismod |= S3C2410_IISMOD_32FS; // 32 fsiisfcon|= S3C2410_IISFCON_RXDMA; //Set RX FIFO acces mode to DMAiisfcon|= S3C2410_IISFCON_TXDMA; //Set RX FIFO acces mode to DMAiiscon |= S3C2410_IISCON_RXDMAEN; //Enable RX DMA service requestiiscon |= S3C2410_IISCON_TXIDLE; //Set TX channel idleiismod |= S3C2410_IISMOD_RXMODE; //Set RX Modeiisfcon|= S3C2410_IISFCON_RXENABLE; //Enable RX Fifodstr="RX";//setup the prescaleraudio_set_dsp_speed(audio_rate);//iiscon has to be set last - it enables the interfacewritel(iismod, iis_base + S3C2410_IISMOD);writel(iisfcon, iis_base + S3C2410_IISFCON);writel(iiscon, iis_base + S3C2410_IISCON);}static void init_s3c2410_iis_bus_tx(void){unsigned int iiscon, iismod, iisfcon;char *dstr;//Kill everything...writel(0, iis_base + S3C2410_IISPSR);writel(0, iis_base + S3C2410_IISCON);writel(0, iis_base + S3C2410_IISMOD);writel(0, iis_base + S3C2410_IISFCON);clk_enable(iis_clock);iiscon = iismod = iisfcon = 0;//Setup basic stuffiiscon |= S3C2410_IISCON_PSCEN; // Enable prescaleriiscon |= S3C2410_IISCON_IISEN; // Enable interfaceiismod |= S3C2410_IISMOD_MASTER; // Set interface to Master Modeiismod |= S3C2410_IISMOD_LR_LLOW; // Low for left channeliismod |= S3C2410_IISMOD_MSB; // MSB formatiismod |= S3C2410_IISMOD_16BIT; // Serial data bit/channel is 16 bitiismod |= S3C2410_IISMOD_384FS; // Master clock freq = 384 fsiismod |= S3C2410_IISMOD_32FS; // 32 fsiisfcon|= S3C2410_IISFCON_RXDMA; //Set RX FIFO acces mode to DMAiisfcon|= S3C2410_IISFCON_TXDMA; //Set TX FIFO acces mode to DMAiiscon |= S3C2410_IISCON_TXDMAEN; //Enable TX DMA service requestiiscon |= S3C2410_IISCON_RXIDLE; //Set RX channel idleiismod |= S3C2410_IISMOD_TXMODE; //Set TX Modeiisfcon|= S3C2410_IISFCON_TXENABLE; //Enable TX Fifodstr="TX";//setup the prescaleraudio_set_dsp_speed(audio_rate);//iiscon has to be set last - it enables the interfacewritel(iismod, iis_base + S3C2410_IISMOD);writel(iisfcon, iis_base + S3C2410_IISFCON);writel(iiscon, iis_base + S3C2410_IISCON);}static int __init audio_init_dma(audio_stream_t * s, char *desc){        int ret ;        s3c2410_dmasrc_t source;        int hwcfg;        unsigned long devaddr;        dmach_t channel;        int dcon;        unsigned int flags = 0;        if(s->dma_ch == DMA_CH2){               channel = 2;               source = S3C2410_DMASRC_MEM;               hwcfg = 3;               devaddr = 0x55000010;               dcon = 0xa0800000;               flags = S3C2410_DMAF_AUTOSTART;               s3c2410_dma_devconfig(channel, source, hwcfg, devaddr);               s3c2410_dma_config(channel, 2, dcon);               s3c2410_dma_set_buffdone_fn(channel, audio_dmaout_done_callback);               s3c2410_dma_setflags(channel, flags);               ret = s3c2410_dma_request(s->dma_ch, &s3c2410iis_dma_out, NULL);               s->dma_ok = 1;               return ret;        }        else if(s->dma_ch == DMA_CH1){               channel =1;               source =S3C2410_DMASRC_HW;               hwcfg =3;               devaddr = 0x55000010;               dcon = 0xa2900000;               flags = S3C2410_DMAF_AUTOSTART;               s3c2410_dma_devconfig(channel, source, hwcfg, devaddr);               s3c2410_dma_config(channel, 2, dcon);               s3c2410_dma_set_buffdone_fn(channel, audio_dmain_done_callback);               s3c2410_dma_setflags(channel, flags);               ret = s3c2410_dma_request(s->dma_ch, &s3c2410iis_dma_in, NULL);               s->dma_ok =1;               return ret ;        }elsereturn 1;}static int audio_clear_dma(audio_stream_t * s,s3c2410_dma_client_t *client){        s3c2410_dma_set_buffdone_fn(s->dma_ch, NULL);        s3c2410_dma_free(s->dma_ch, client);return 0;}static int s3c2410iis_probe(struct device *dev) {        struct platform_device *pdev = to_platform_device(dev);        struct resource *res;        unsigned long flags;        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);        if (res == NULL) {                printk(KERN_INFO PFX "failed to get memory region resouce\n");                return -ENOENT;        }        iis_base = (void *)S3C24XX_VA_IIS ;        if (iis_base == 0) {                printk(KERN_INFO PFX "failed to ioremap() region\n");                return -EINVAL;        }        iis_clock = clk_get(dev, "iis");        if (iis_clock == NULL) {                printk(KERN_INFO PFX "failed to find clock source\n");                return -ENOENT;        }/**************************modify by lfc*****************************/        clk_use(iis_clock);        clk_enable(iis_clock);/*****************************end add********************************/        local_irq_save(flags);/* GPB 4: L3CLOCK, OUTPUT */        s3c2410_gpio_cfgpin(S3C2410_GPB4, S3C2410_GPB4_OUTP);        s3c2410_gpio_pullup(S3C2410_GPB4,1);/* GPB 3: L3DATA, OUTPUT */        s3c2410_gpio_cfgpin(S3C2410_GPB3,S3C2410_GPB3_OUTP);/* GPB 2: L3MODE, OUTPUT */        s3c2410_gpio_cfgpin(S3C2410_GPB2,S3C2410_GPB2_OUTP);        s3c2410_gpio_pullup(S3C2410_GPB2,1);/* GPE 3: I2SSDI */        s3c2410_gpio_cfgpin(S3C2410_GPE3,S3C2410_GPE3_I2SSDI);        s3c2410_gpio_pullup(S3C2410_GPE3,1);/* GPE 0: I2SLRCK */        s3c2410_gpio_cfgpin(S3C2410_GPE0,S3C2410_GPE0_I2SLRCK);        s3c2410_gpio_pullup(S3C2410_GPE0,1);/* GPE 1: I2SSCLK */        s3c2410_gpio_cfgpin(S3C2410_GPE1,S3C2410_GPE1_I2SSCLK);        s3c2410_gpio_pullup(S3C2410_GPE1,1);/* GPE 2: CDCLK */        s3c2410_gpio_cfgpin(S3C2410_GPE2,S3C2410_GPE2_CDCLK);        s3c2410_gpio_pullup(S3C2410_GPE2,1);/* GPE 4: I2SSDO */        s3c2410_gpio_cfgpin(S3C2410_GPE4,S3C2410_GPE4_I2SSDO);        s3c2410_gpio_pullup(S3C2410_GPE4,1);        local_irq_restore(flags);        init_s3c2410_iis_bus();        init_uda1341();        output_stream.dma_ch = DMA_CH2;        if (audio_init_dma(&output_stream, "UDA1341 out")) {                audio_clear_dma(&output_stream,&s3c2410iis_dma_out);                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,&s3c2410iis_dma_in);                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;}static int s3c2410iis_remove(struct device *dev) {        unregister_sound_dsp(audio_dev_dsp);        unregister_sound_mixer(audio_dev_mixer);        audio_clear_dma(&output_stream,&s3c2410iis_dma_out);        audio_clear_dma(&input_stream,&s3c2410iis_dma_in); /* input */        printk(AUDIO_NAME_VERBOSE " unloaded\n");        return 0;}static struct device_driver s3c2410iis_driver = {        .name = "s3c2410-iis",        .bus = &platform_bus_type,        .probe = s3c2410iis_probe,        .remove = s3c2410iis_remove,};static int __init s3c2410_uda1341_init(void) {        memzero(&input_stream, sizeof(audio_stream_t));        memzero(&output_stream, sizeof(audio_stream_t));        return driver_register(&s3c2410iis_driver);}static void __exit s3c2410_uda1341_exit(void) {        driver_unregister(&s3c2410iis_driver);}module_init(s3c2410_uda1341_init);module_exit(s3c2410_uda1341_exit);MODULE_LICENSE("GPL");MODULE_AUTHOR("superlp<xinshengtaier@eyou.com>");MODULE_DESCRIPTION("S3C2410 uda1341 sound driver");