wavefront.c

是关于linux2.5.1的完全源码

			unsigned long port,
			snd_wavefront_mpu_id mpu)

{
	snd_rawmidi_t *rmidi;
	static int first = 1;

	if (first) {
		first = 0;
		acard->wavefront.midi.base = port;
		if (snd_wavefront_midi_start (acard)) {
			snd_printk ("cannot initialize MIDI interface\n");
			return NULL;
		}
	}

	if (snd_rawmidi_new (card, "WaveFront MIDI", midi_dev, 1, 1, &rmidi) < 0)
		return NULL;

	if (mpu == internal_mpu) {
		strcpy(rmidi->name, "WaveFront MIDI (Internal)");
		rmidi->private_data = &internal_id;
	} else {
		strcpy(rmidi->name, "WaveFront MIDI (External)");
		rmidi->private_data = &external_id;
	}

	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_wavefront_midi_output);
	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_wavefront_midi_input);

	rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT |
	                     SNDRV_RAWMIDI_INFO_INPUT |
	                     SNDRV_RAWMIDI_INFO_DUPLEX;

	return rmidi;
}

static void
snd_wavefront_free(snd_card_t *card)
{
	snd_wavefront_card_t *acard = (snd_wavefront_card_t *)card->private_data;
	
	if (acard) {
#ifdef __ISAPNP__
		snd_wavefront_deactivate(acard);
#endif
		if (acard->wavefront.res_base != NULL) {
			release_resource(acard->wavefront.res_base);
			kfree_nocheck(acard->wavefront.res_base);
		}
		if (acard->wavefront.irq > 0)
			free_irq(acard->wavefront.irq, (void *)acard);
	}
}

static int __init
snd_wavefront_probe (int dev)
{
	snd_card_t *card;
	snd_wavefront_card_t *acard;
	cs4231_t *chip;
	snd_hwdep_t *wavefront_synth;
	snd_rawmidi_t *ics2115_internal_rmidi = NULL;
	snd_rawmidi_t *ics2115_external_rmidi = NULL;
	snd_hwdep_t *fx_processor;
	int hw_dev = 0, midi_dev = 0, err;

	if (snd_cs4232_mpu_port[dev] < 0)
		snd_cs4232_mpu_port[dev] = SNDRV_AUTO_PORT;
	if (snd_fm_port[dev] < 0)
		snd_fm_port[dev] = SNDRV_AUTO_PORT;
	if (snd_ics2115_port[dev] < 0)
		snd_ics2115_port[dev] = SNDRV_AUTO_PORT;

#ifdef __ISAPNP__
	if (!snd_isapnp[dev]) {
#endif
		if (snd_cs4232_pcm_port[dev] == SNDRV_AUTO_PORT) {
			snd_printk("specify CS4232 port\n");
			return -EINVAL;
		}
		if (snd_ics2115_port[dev] == SNDRV_AUTO_PORT) {
			snd_printk("specify ICS2115 port\n");
			return -ENODEV;
		}
#ifdef __ISAPNP__
	}
#endif
	card = snd_card_new (snd_index[dev], 
			     snd_id[dev],
			     THIS_MODULE,
			     sizeof(snd_wavefront_card_t));

	if (card == NULL) {
		return -ENOMEM;
	}
	acard = (snd_wavefront_card_t *)card->private_data;
	acard->wavefront.irq = -1;
	init_waitqueue_head(&acard->wavefront.interrupt_sleeper);
	spin_lock_init(&acard->wavefront.midi.open);
	spin_lock_init(&acard->wavefront.midi.virtual);
	card->private_free = snd_wavefront_free;

#ifdef __ISAPNP__
	if (snd_isapnp[dev] && snd_wavefront_isapnp (dev, acard) < 0) {
		if (snd_cs4232_pcm_port[dev] == SNDRV_AUTO_PORT) {
			snd_printk ("isapnp detection failed\n");
			snd_card_free (card);
			return -ENODEV;
		}
	}
#endif /* __ISAPNP__ */

	/* --------- PCM --------------- */

	if ((err = snd_cs4231_create (card,
				      snd_cs4232_pcm_port[dev],
				      -1,
				      snd_cs4232_pcm_irq[dev],
				      snd_dma1[dev],
				      snd_dma2[dev],
				      CS4231_HW_DETECT, 0, &chip)) < 0) {
		snd_card_free(card);
		snd_printk ("can't allocate CS4231 device\n");
		return err;
	}

	if ((err = snd_cs4231_pcm (chip, 0, NULL)) < 0) {
		snd_card_free(card);
		return err;
	}
	if ((err = snd_cs4231_timer (chip, 0, NULL)) < 0) {
		snd_card_free(card);
		return err;
	}

	/* ---------- OPL3 synth --------- */

	if (snd_fm_port[dev] != SNDRV_AUTO_PORT) {
		opl3_t *opl3;

	        if ((err = snd_opl3_create(card,
					   snd_fm_port[dev],
					   snd_fm_port[dev] + 2,
					   OPL3_HW_OPL3_CS,
					   0, &opl3)) < 0) {
			snd_printk ("can't allocate or detect OPL3 synth\n");
			snd_card_free(card);
			return err;
		}

		if ((err = snd_opl3_hwdep_new(opl3, hw_dev, 1, NULL)) < 0) {
			snd_card_free(card);
			return err;
		}
		hw_dev++;
	}

	/* ------- ICS2115 Wavetable synth ------- */

	if ((acard->wavefront.res_base = request_region(snd_ics2115_port[dev], 16, "ICS2115")) == NULL) {
		snd_printk("unable to grab ICS2115 i/o region 0x%lx-0x%lx\n", snd_ics2115_port[dev], snd_ics2115_port[dev] + 16 - 1);
		snd_card_free(card);
		return -EBUSY;
	}
	if (request_irq(snd_ics2115_irq[dev], snd_wavefront_ics2115_interrupt, SA_INTERRUPT, "ICS2115", (void *)acard)) {
		snd_printk("unable to use ICS2115 IRQ %d\n", snd_ics2115_irq[dev]);
		snd_card_free(card);
		return -EBUSY;
	}
	
	acard->wavefront.irq = snd_ics2115_irq[dev];
	acard->wavefront.base = snd_ics2115_port[dev];

	if ((wavefront_synth = snd_wavefront_new_synth (card, hw_dev, acard)) == NULL) {
		snd_printk ("can't create WaveFront synth device\n");
		snd_card_free(card);
		return -ENOMEM;
	}

	strcpy (wavefront_synth->name, "ICS2115 Wavetable MIDI Synthesizer");
	wavefront_synth->iface = SNDRV_HWDEP_IFACE_ICS2115;
	hw_dev++;

	/* --------- Mixer ------------ */

	if ((err = snd_cs4231_mixer(chip)) < 0) {
		snd_printk ("can't allocate mixer device\n");
		snd_card_free(card);
		return err;
	}

	/* -------- CS4232 MPU-401 interface -------- */

	if (snd_cs4232_mpu_port[dev] > 0 && snd_cs4232_mpu_port[dev] != SNDRV_AUTO_PORT) {
		if ((err = snd_mpu401_uart_new(card, midi_dev, MPU401_HW_CS4232,
					       snd_cs4232_mpu_port[dev], 0,
					       snd_cs4232_mpu_irq[dev],
					       SA_INTERRUPT,
					       NULL)) < 0) {
			snd_printk ("can't allocate CS4232 MPU-401 device\n");
			snd_card_free(card);
			return err;
		}
		midi_dev++;
	}

	/* ------ ICS2115 internal MIDI ------------ */

	if (snd_ics2115_port[dev] >= 0 && snd_ics2115_port[dev] != SNDRV_AUTO_PORT) {
		ics2115_internal_rmidi = 
			snd_wavefront_new_midi (card, 
						midi_dev,
						acard,
						snd_ics2115_port[dev],
						internal_mpu);
		if (ics2115_internal_rmidi == NULL) {
			snd_printk ("can't setup ICS2115 internal MIDI device\n");
			snd_card_free(card);
			return -ENOMEM;
		}
		midi_dev++;
	}

	/* ------ ICS2115 external MIDI ------------ */

	if (snd_ics2115_port[dev] >= 0 && snd_ics2115_port[dev] != SNDRV_AUTO_PORT) {
		ics2115_external_rmidi = 
			snd_wavefront_new_midi (card, 
						midi_dev,
						acard,
						snd_ics2115_port[dev],
						external_mpu);
		if (ics2115_external_rmidi == NULL) {
			snd_printk ("can't setup ICS2115 external MIDI device\n");
			snd_card_free(card);
			return -ENOMEM;
		}
		midi_dev++;
	}

	/* FX processor for Tropez+ */

	if (acard->wavefront.has_fx) {
		fx_processor = snd_wavefront_new_fx (card,
						     hw_dev,
						     acard,
						     snd_ics2115_port[dev]);
		if (fx_processor == NULL) {
			snd_printk ("can't setup FX device\n");
			snd_card_free(card);
			return -ENOMEM;
		}

		hw_dev++;

		strcpy(card->driver, "Tropez+");
		strcpy(card->shortname, "Turtle Beach Tropez+");
	} else {
		/* Need a way to distinguish between Maui and Tropez */
		strcpy(card->driver, "WaveFront");
		strcpy(card->shortname, "Turtle Beach WaveFront");
	}

	/* ----- Register the card --------- */

	/* Not safe to include "Turtle Beach" in longname, due to 
	   length restrictions
	*/

	sprintf(card->longname, "%s PCM 0x%lx irq %d dma %d",
		card->driver,
		chip->port,
		snd_cs4232_pcm_irq[dev],
		snd_dma1[dev]);

	if (snd_dma2[dev] >= 0 && snd_dma2[dev] < 8)
		sprintf(card->longname + strlen(card->longname), "&%d", snd_dma2[dev]);

	if (snd_cs4232_mpu_port[dev] != SNDRV_AUTO_PORT) {
		sprintf (card->longname + strlen (card->longname), 
			 " MPU-401 0x%lx irq %d",
			 snd_cs4232_mpu_port[dev],
			 snd_cs4232_mpu_irq[dev]);
	}

	sprintf (card->longname + strlen (card->longname), 
		 " SYNTH 0x%lx irq %d",
		 snd_ics2115_port[dev],
		 snd_ics2115_irq[dev]);

	if ((err = snd_card_register(card)) < 0) {
		snd_card_free(card);
		return err;
	}
	snd_wavefront_cards[dev] = card;
	return 0;
}	

#ifdef __ISAPNP__

static int __init snd_wavefront_isapnp_detect(struct isapnp_card *card,
                                              const struct isapnp_card_id *id)
{
        static int dev;
        int res;

        for ( ; dev < SNDRV_CARDS; dev++) {
                if (!snd_enable[dev] || !snd_isapnp[dev])
                        continue;
                snd_wavefront_isapnp_cards[dev] = card;
                snd_wavefront_isapnp_id[dev] = id;
                res = snd_wavefront_probe(dev);
                if (res < 0)
                        return res;
                dev++;
                return 0;
        }

        return -ENODEV;
}

#endif /* __ISAPNP__ */

static int __init alsa_card_wavefront_init(void)
{
	int cards = 0;
	int dev;
	for (dev = 0; dev < SNDRV_CARDS; dev++) {
		if (!snd_enable[dev])
			continue;
#ifdef __ISAPNP__
		if (snd_isapnp[dev])
			continue;
#endif
		if (snd_wavefront_probe(dev) >= 0)
			cards++;
	}
#ifdef __ISAPNP__
	cards += isapnp_probe_cards(snd_wavefront_pnpids, snd_wavefront_isapnp_detect);
#endif
	if (!cards) {
#ifdef MODULE
		printk (KERN_ERR "No WaveFront cards found or devices busy\n");
#endif
		return -ENODEV;
	}
	return 0;
}

static void __exit alsa_card_wavefront_exit(void)
{
	int idx;

	for (idx = 0; idx < SNDRV_CARDS; idx++)
		snd_card_free(snd_wavefront_cards[idx]);
}

module_init(alsa_card_wavefront_init)
module_exit(alsa_card_wavefront_exit)

#ifndef MODULE

/* format is: snd-wavefront=snd_enable,snd_index,snd_id,snd_isapnp,
			    snd_cs4232_pcm_port,snd_cs4232_pcm_irq,
			    snd_cs4232_mpu_port,snd_cs4232_mpu_irq,
			    snd_ics2115_port,snd_ics2115_irq,
			    snd_fm_port,
			    snd_dma1,snd_dma2,
			    snd_use_cs4232_midi */

static int __init alsa_card_wavefront_setup(char *str)
{
	static unsigned __initdata nr_dev = 0;

	if (nr_dev >= SNDRV_CARDS)
		return 0;
	(void)(get_option(&str,&snd_enable[nr_dev]) == 2 &&
	       get_option(&str,&snd_index[nr_dev]) == 2 &&
	       get_id(&str,&snd_id[nr_dev]) == 2 &&
	       get_option(&str,&snd_isapnp[nr_dev]) == 2 &&
	       get_option(&str,(int *)&snd_cs4232_pcm_port[nr_dev]) == 2 &&
	       get_option(&str,&snd_cs4232_pcm_irq[nr_dev]) == 2 &&
	       get_option(&str,(int *)&snd_cs4232_mpu_port[nr_dev]) == 2 &&
	       get_option(&str,&snd_cs4232_mpu_irq[nr_dev]) == 2 &&
	       get_option(&str,(int *)&snd_ics2115_port[nr_dev]) == 2 &&
	       get_option(&str,&snd_ics2115_irq[nr_dev]) == 2 &&
	       get_option(&str,(int *)&snd_fm_port[nr_dev]) == 2 &&
	       get_option(&str,&snd_dma1[nr_dev]) == 2 &&
	       get_option(&str,&snd_dma2[nr_dev]) == 2 &&
	       get_option(&str,&snd_use_cs4232_midi[nr_dev]) == 2);
	nr_dev++;
	return 1;
}

__setup("snd-wavefront=", alsa_card_wavefront_setup);

#endif /* ifndef MODULE */