rme96.c

linux 内核源代码

			}
			snd_rme96_playback_stop(rme96);
		}
		break;

	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
		if (RME96_ISPLAYING(rme96)) {
			snd_rme96_playback_stop(rme96);
		}
		break;

	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
		if (!RME96_ISPLAYING(rme96)) {
			snd_rme96_playback_start(rme96, 1);
		}
		break;
		
	default:
		return -EINVAL;
	}
	return 0;
}

static int
snd_rme96_capture_trigger(struct snd_pcm_substream *substream, 
			  int cmd)
{
	struct rme96 *rme96 = snd_pcm_substream_chip(substream);

	switch (cmd) {
	case SNDRV_PCM_TRIGGER_START:
		if (!RME96_ISRECORDING(rme96)) {
			if (substream != rme96->capture_substream) {
				return -EBUSY;
			}
			snd_rme96_capture_start(rme96, 0);
		}
		break;

	case SNDRV_PCM_TRIGGER_STOP:
		if (RME96_ISRECORDING(rme96)) {
			if (substream != rme96->capture_substream) {
				return -EBUSY;
			}
			snd_rme96_capture_stop(rme96);
		}
		break;

	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
		if (RME96_ISRECORDING(rme96)) {
			snd_rme96_capture_stop(rme96);
		}
		break;

	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
		if (!RME96_ISRECORDING(rme96)) {
			snd_rme96_capture_start(rme96, 1);
		}
		break;
		
	default:
		return -EINVAL;
	}

	return 0;
}

static snd_pcm_uframes_t
snd_rme96_playback_pointer(struct snd_pcm_substream *substream)
{
	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
	return snd_rme96_playback_ptr(rme96);
}

static snd_pcm_uframes_t
snd_rme96_capture_pointer(struct snd_pcm_substream *substream)
{
	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
	return snd_rme96_capture_ptr(rme96);
}

static struct snd_pcm_ops snd_rme96_playback_spdif_ops = {
	.open =		snd_rme96_playback_spdif_open,
	.close =	snd_rme96_playback_close,
	.ioctl =	snd_pcm_lib_ioctl,
	.hw_params =	snd_rme96_playback_hw_params,
	.prepare =	snd_rme96_playback_prepare,
	.trigger =	snd_rme96_playback_trigger,
	.pointer =	snd_rme96_playback_pointer,
	.copy =		snd_rme96_playback_copy,
	.silence =	snd_rme96_playback_silence,
	.mmap =		snd_pcm_lib_mmap_iomem,
};

static struct snd_pcm_ops snd_rme96_capture_spdif_ops = {
	.open =		snd_rme96_capture_spdif_open,
	.close =	snd_rme96_capture_close,
	.ioctl =	snd_pcm_lib_ioctl,
	.hw_params =	snd_rme96_capture_hw_params,
	.prepare =	snd_rme96_capture_prepare,
	.trigger =	snd_rme96_capture_trigger,
	.pointer =	snd_rme96_capture_pointer,
	.copy =		snd_rme96_capture_copy,
	.mmap =		snd_pcm_lib_mmap_iomem,
};

static struct snd_pcm_ops snd_rme96_playback_adat_ops = {
	.open =		snd_rme96_playback_adat_open,
	.close =	snd_rme96_playback_close,
	.ioctl =	snd_pcm_lib_ioctl,
	.hw_params =	snd_rme96_playback_hw_params,
	.prepare =	snd_rme96_playback_prepare,
	.trigger =	snd_rme96_playback_trigger,
	.pointer =	snd_rme96_playback_pointer,
	.copy =		snd_rme96_playback_copy,
	.silence =	snd_rme96_playback_silence,
	.mmap =		snd_pcm_lib_mmap_iomem,
};

static struct snd_pcm_ops snd_rme96_capture_adat_ops = {
	.open =		snd_rme96_capture_adat_open,
	.close =	snd_rme96_capture_close,
	.ioctl =	snd_pcm_lib_ioctl,
	.hw_params =	snd_rme96_capture_hw_params,
	.prepare =	snd_rme96_capture_prepare,
	.trigger =	snd_rme96_capture_trigger,
	.pointer =	snd_rme96_capture_pointer,
	.copy =		snd_rme96_capture_copy,
	.mmap =		snd_pcm_lib_mmap_iomem,
};

static void
snd_rme96_free(void *private_data)
{
	struct rme96 *rme96 = (struct rme96 *)private_data;

	if (rme96 == NULL) {
	        return;
	}
	if (rme96->irq >= 0) {
		snd_rme96_playback_stop(rme96);
		snd_rme96_capture_stop(rme96);
		rme96->areg &= ~RME96_AR_DAC_EN;
		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
		free_irq(rme96->irq, (void *)rme96);
		rme96->irq = -1;
	}
	if (rme96->iobase) {
		iounmap(rme96->iobase);
		rme96->iobase = NULL;
	}
	if (rme96->port) {
		pci_release_regions(rme96->pci);
		rme96->port = 0;
	}
	pci_disable_device(rme96->pci);
}

static void
snd_rme96_free_spdif_pcm(struct snd_pcm *pcm)
{
	struct rme96 *rme96 = (struct rme96 *) pcm->private_data;
	rme96->spdif_pcm = NULL;
}

static void
snd_rme96_free_adat_pcm(struct snd_pcm *pcm)
{
	struct rme96 *rme96 = (struct rme96 *) pcm->private_data;
	rme96->adat_pcm = NULL;
}

static int __devinit
snd_rme96_create(struct rme96 *rme96)
{
	struct pci_dev *pci = rme96->pci;
	int err;

	rme96->irq = -1;
	spin_lock_init(&rme96->lock);

	if ((err = pci_enable_device(pci)) < 0)
		return err;

	if ((err = pci_request_regions(pci, "RME96")) < 0)
		return err;
	rme96->port = pci_resource_start(rme96->pci, 0);

	if ((rme96->iobase = ioremap_nocache(rme96->port, RME96_IO_SIZE)) == 0) {
		snd_printk(KERN_ERR "unable to remap memory region 0x%lx-0x%lx\n", rme96->port, rme96->port + RME96_IO_SIZE - 1);
		return -ENOMEM;
	}

	if (request_irq(pci->irq, snd_rme96_interrupt, IRQF_SHARED,
			"RME96", rme96)) {
		snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
		return -EBUSY;
	}
	rme96->irq = pci->irq;

	/* read the card's revision number */
	pci_read_config_byte(pci, 8, &rme96->rev);	
	
	/* set up ALSA pcm device for S/PDIF */
	if ((err = snd_pcm_new(rme96->card, "Digi96 IEC958", 0,
			       1, 1, &rme96->spdif_pcm)) < 0)
	{
		return err;
	}
	rme96->spdif_pcm->private_data = rme96;
	rme96->spdif_pcm->private_free = snd_rme96_free_spdif_pcm;
	strcpy(rme96->spdif_pcm->name, "Digi96 IEC958");
	snd_pcm_set_ops(rme96->spdif_pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_rme96_playback_spdif_ops);
	snd_pcm_set_ops(rme96->spdif_pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_rme96_capture_spdif_ops);

	rme96->spdif_pcm->info_flags = 0;

	/* set up ALSA pcm device for ADAT */
	if (pci->device == PCI_DEVICE_ID_RME_DIGI96) {
		/* ADAT is not available on the base model */
		rme96->adat_pcm = NULL;
	} else {
		if ((err = snd_pcm_new(rme96->card, "Digi96 ADAT", 1,
				       1, 1, &rme96->adat_pcm)) < 0)
		{
			return err;
		}		
		rme96->adat_pcm->private_data = rme96;
		rme96->adat_pcm->private_free = snd_rme96_free_adat_pcm;
		strcpy(rme96->adat_pcm->name, "Digi96 ADAT");
		snd_pcm_set_ops(rme96->adat_pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_rme96_playback_adat_ops);
		snd_pcm_set_ops(rme96->adat_pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_rme96_capture_adat_ops);
		
		rme96->adat_pcm->info_flags = 0;
	}

	rme96->playback_periodsize = 0;
	rme96->capture_periodsize = 0;
	
	/* make sure playback/capture is stopped, if by some reason active */
	snd_rme96_playback_stop(rme96);
	snd_rme96_capture_stop(rme96);
	
	/* set default values in registers */
	rme96->wcreg =
		RME96_WCR_FREQ_1 | /* set 44.1 kHz playback */
		RME96_WCR_SEL |    /* normal playback */
		RME96_WCR_MASTER | /* set to master clock mode */
		RME96_WCR_INP_0;   /* set coaxial input */

	rme96->areg = RME96_AR_FREQPAD_1; /* set 44.1 kHz analog capture */

	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
	
	/* reset the ADC */
	writel(rme96->areg | RME96_AR_PD2,
	       rme96->iobase + RME96_IO_ADDITIONAL_REG);
	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);	

	/* reset and enable the DAC (order is important). */
	snd_rme96_reset_dac(rme96);
	rme96->areg |= RME96_AR_DAC_EN;
	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);

	/* reset playback and record buffer pointers */
	writel(0, rme96->iobase + RME96_IO_RESET_PLAY_POS);
	writel(0, rme96->iobase + RME96_IO_RESET_REC_POS);

	/* reset volume */
	rme96->vol[0] = rme96->vol[1] = 0;
	if (RME96_HAS_ANALOG_OUT(rme96)) {
		snd_rme96_apply_dac_volume(rme96);
	}
	
	/* init switch interface */
	if ((err = snd_rme96_create_switches(rme96->card, rme96)) < 0) {
		return err;
	}

        /* init proc interface */
	snd_rme96_proc_init(rme96);
	
	return 0;
}

/*
 * proc interface
 */

static void 
snd_rme96_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
{
	int n;
	struct rme96 *rme96 = (struct rme96 *)entry->private_data;
	
	rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);

	snd_iprintf(buffer, rme96->card->longname);
	snd_iprintf(buffer, " (index #%d)\n", rme96->card->number + 1);

	snd_iprintf(buffer, "\nGeneral settings\n");
	if (rme96->wcreg & RME96_WCR_IDIS) {
		snd_iprintf(buffer, "  period size: N/A (interrupts "
			    "disabled)\n");
	} else if (rme96->wcreg & RME96_WCR_ISEL) {
		snd_iprintf(buffer, "  period size: 2048 bytes\n");
	} else {
		snd_iprintf(buffer, "  period size: 8192 bytes\n");
	}	
	snd_iprintf(buffer, "\nInput settings\n");
	switch (snd_rme96_getinputtype(rme96)) {
	case RME96_INPUT_OPTICAL:
		snd_iprintf(buffer, "  input: optical");
		break;
	case RME96_INPUT_COAXIAL:
		snd_iprintf(buffer, "  input: coaxial");
		break;
	case RME96_INPUT_INTERNAL:
		snd_iprintf(buffer, "  input: internal");
		break;
	case RME96_INPUT_XLR:
		snd_iprintf(buffer, "  input: XLR");
		break;
	case RME96_INPUT_ANALOG:
		snd_iprintf(buffer, "  input: analog");
		break;
	}
	if (snd_rme96_capture_getrate(rme96, &n) < 0) {
		snd_iprintf(buffer, "\n  sample rate: no valid signal\n");
	} else {
		if (n) {
			snd_iprintf(buffer, " (8 channels)\n");
		} else {
			snd_iprintf(buffer, " (2 channels)\n");
		}
		snd_iprintf(buffer, "  sample rate: %d Hz\n",
			    snd_rme96_capture_getrate(rme96, &n));
	}
	if (rme96->wcreg & RME96_WCR_MODE24_2) {
		snd_iprintf(buffer, "  sample format: 24 bit\n");
	} else {
		snd_iprintf(buffer, "  sample format: 16 bit\n");
	}
	
	snd_iprintf(buffer, "\nOutput settings\n");
	if (rme96->wcreg & RME96_WCR_SEL) {
		snd_iprintf(buffer, "  output signal: normal playback\n");
	} else {
		snd_iprintf(buffer, "  output signal: same as input\n");
	}
	snd_iprintf(buffer, "  sample rate: %d Hz\n",
		    snd_rme96_playback_getrate(rme96));
	if (rme96->wcreg & RME96_WCR_MODE24) {
		snd_iprintf(buffer, "  sample format: 24 bit\n");
	} else {
		snd_iprintf(buffer, "  sample format: 16 bit\n");
	}
	if (rme96->areg & RME96_AR_WSEL) {
		snd_iprintf(buffer, "  sample clock source: word clock\n");
	} else if (rme96->wcreg & RME96_WCR_MASTER) {
		snd_iprintf(buffer, "  sample clock source: internal\n");
	} else if (snd_rme96_getinputtype(rme96) == RME96_INPUT_ANALOG) {
		snd_iprintf(buffer, "  sample clock source: autosync (internal anyway due to analog input setting)\n");
	} else if (snd_rme96_capture_getrate(rme96, &n) < 0) {
		snd_iprintf(buffer, "  sample clock source: autosync (internal anyway due to no valid signal)\n");
	} else {
		snd_iprintf(buffer, "  sample clock source: autosync\n");
	}
	if (rme96->wcreg & RME96_WCR_PRO) {
		snd_iprintf(buffer, "  format: AES/EBU (professional)\n");
	} else {
		snd_iprintf(buffer, "  format: IEC958 (consumer)\n");
	}
	if (rme96->wcreg & RME96_WCR_EMP) {
		snd_iprintf(buffer, "  emphasis: on\n");
	} else {
		snd_iprintf(buffer, "  emphasis: off\n");
	}
	if (rme96->wcreg & RME96_WCR_DOLBY) {
		snd_iprintf(buffer, "  non-audio (dolby): on\n");
	} else {
		snd_iprintf(buffer, "  non-audio (dolby): off\n");
	}
	if (RME96_HAS_ANALOG_IN(rme96)) {
		snd_iprintf(buffer, "\nAnalog output settings\n");
		switch (snd_rme96_getmontracks(rme96)) {
		case RME96_MONITOR_TRACKS_1_2:
			snd_iprintf(buffer, "  monitored ADAT tracks: 1+2\n");
			break;
		case RME96_MONITOR_TRACKS_3_4:
			snd_iprintf(buffer, "  monitored ADAT tracks: 3+4\n");
			break;
		case RME96_MONITOR_TRACKS_5_6:
			snd_iprintf(buffer, "  monitored ADAT tracks: 5+6\n");
			break;
		case RME96_MONITOR_TRACKS_7_8:
			snd_iprintf(buffer, "  monitored ADAT tracks: 7+8\n");
			break;
		}
		switch (snd_rme96_getattenuation(rme96)) {
		case RME96_ATTENUATION_0:
			snd_iprintf(buffer, "  attenuation: 0 dB\n");
			break;
		case RME96_ATTENUATION_6:
			snd_iprintf(buffer, "  attenuation: -6 dB\n");
			break;
		case RME96_ATTENUATION_12:
			snd_iprintf(buffer, "  attenuation: -12 dB\n");
			break;
		case RME96_ATTENUATION_18:
			snd_iprintf(buffer, "  attenuation: -18 dB\n");
			break;
		}
		snd_iprintf(buffer, "  volume left: %u\n", rme96->vol[0]);
		snd_iprintf(buffer, "  volume right: %u\n", rme96->vol[1]);
	}
}

static void __devinit 
snd_rme96_proc_init(struct rme96 *rme96)
{
	struct snd_info_entry *entry;

	if (! snd_card_proc_new(rme96->card, "rme96", &entry))
		snd_info_set_text_ops(entry, rme96, snd_rme96_proc_read);
}

/*
 * control interface
 */

#define snd_rme96_info_loopback_control		snd_ctl_boolean_mono_info

static int
snd_rme96_get_loopback_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
	
	spin_lock_irq(&rme96->lock);
	ucontrol->value.integer.value[0] = rme96->wcreg & RME96_WCR_SEL ? 0 : 1;
	spin_unlock_irq(&rme96->lock);
	return 0;
}
static int
snd_rme96_put_loopback_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
	unsigned int val;
	int change;
	
	val = ucontrol->value.integer.value[0] ? 0 : RME96_WCR_SEL;
	spin_lock_irq(&rme96->lock);
	val = (rme96->wcreg & ~RME96_WCR_SEL) | val;
	change = val != rme96->wcreg;
	rme96->wcreg = val;
	writel(val, rme96->iobase + RME96_IO_CONTROL_REGISTER);
	spin_unlock_irq(&rme96->lock);