wavefront.c

是关于linux2.5.1的完全源码

/*
 *  ALSA card-level driver for Turtle Beach Wavefront cards 
 *                                              (Maui,Tropez,Tropez+)
 *
 *  Copyright (c) 1997-1999 by Paul Barton-Davis <[e-mail]>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */

#include <sound/driver.h>
#include <linux/init.h>
#include <linux/slab.h>
#ifndef LINUX_ISAPNP_H
#include <linux/isapnp.h>
#define isapnp_card pci_bus
#define isapnp_dev pci_dev
#endif
#include <sound/core.h>
#define SNDRV_GET_ID
#include <sound/initval.h>
#include <sound/opl3.h>
#include <sound/snd_wavefront.h>

#define chip_t cs4231_t

EXPORT_NO_SYMBOLS;
MODULE_AUTHOR("Paul Barton-Davis <[e-mail]>");
MODULE_DESCRIPTION("Turtle Beach Wavefront");
MODULE_LICENSE("GPL");
MODULE_CLASSES("{sound}");
MODULE_DEVICES("{{Turtle Beach,Maui/Tropez/Tropez+}}");

static int snd_index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	    /* Index 0-MAX */
static char *snd_id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	    /* ID for this card */
static int snd_enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;	    /* Enable this card */
static int snd_isapnp[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
static long snd_cs4232_pcm_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;	/* PnP setup */
static int snd_cs4232_pcm_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 5,7,9,11,12,15 */
static long snd_cs4232_mpu_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */
static int snd_cs4232_mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 9,11,12,15 */
static long snd_ics2115_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */
static int snd_ics2115_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;    /* 2,9,11,12,15 */
static long snd_fm_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;	    /* PnP setup */
static int snd_dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	    /* 0,1,3,5,6,7 */
static int snd_dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	    /* 0,1,3,5,6,7 */
static int snd_use_cs4232_midi[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 0}; 

MODULE_PARM(snd_index, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
MODULE_PARM_DESC(snd_index, "Index value for WaveFront soundcard.");
MODULE_PARM_SYNTAX(snd_index, SNDRV_INDEX_DESC);
MODULE_PARM(snd_id, "1-" __MODULE_STRING(SNDRV_CARDS) "s");
MODULE_PARM_DESC(snd_id, "ID string for WaveFront soundcard.");
MODULE_PARM_SYNTAX(snd_id, SNDRV_ID_DESC);
MODULE_PARM(snd_enable, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
MODULE_PARM_DESC(snd_enable, "Enable WaveFront soundcard.");
MODULE_PARM_SYNTAX(snd_enable, SNDRV_ENABLE_DESC);
#ifdef __ISAPNP__
MODULE_PARM(snd_isapnp, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
MODULE_PARM_DESC(snd_isapnp, "ISA PnP detection for WaveFront soundcards.");
MODULE_PARM_SYNTAX(snd_isapnp, SNDRV_ISAPNP_DESC);
#endif
MODULE_PARM(snd_cs4232_pcm_port, "1-" __MODULE_STRING(SNDRV_CARDS) "l");
MODULE_PARM_DESC(snd_4232_port, "Port # for CS4232 PCM interface.");
MODULE_PARM_SYNTAX(snd_cs4232_port, SNDRV_PORT12_DESC);
MODULE_PARM(snd_cs4232_pcm_irq, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
MODULE_PARM_DESC(snd_cs4232_pcm_irq, "IRQ # for CS4232 PCM interface.");
MODULE_PARM_SYNTAX(snd_cs4232_pcm_irq, SNDRV_ENABLED ",allows:{{5},{7},{9},{11},{12},{15}},dialog:list");
MODULE_PARM(snd_dma1, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
MODULE_PARM_DESC(snd_dma1, "DMA1 # for CS4232 PCM interface.");
MODULE_PARM_SYNTAX(snd_dma1, SNDRV_DMA_DESC);
MODULE_PARM(snd_dma2, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
MODULE_PARM_DESC(snd_dma2, "DMA2 # for CS4232 PCM interface.");
MODULE_PARM_SYNTAX(snd_dma2, SNDRV_DMA_DESC);
MODULE_PARM(snd_cs4232_mpu_port, "1-" __MODULE_STRING(SNDRV_CARDS) "l");
MODULE_PARM_DESC(snd_cs4232_mpu_port, "port # for CS4232 MPU-401 interface.");
MODULE_PARM_SYNTAX(snd_cs4232_mpu_port, SNDRV_PORT12_DESC);
MODULE_PARM(snd_cs4232_mpu_irq, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
MODULE_PARM_DESC(snd_cs4232_mpu_irq, "IRQ # for CS4232 MPU-401 interface.");
MODULE_PARM_SYNTAX(snd_cs4232_mpu_irq, SNDRV_ENABLED ",allows:{{9},{11},{12},{15}},dialog:list");
MODULE_PARM(snd_ics2115_irq, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
MODULE_PARM_DESC(snd_ics2115_irq, "IRQ # for ICS2115.");
MODULE_PARM_SYNTAX(snd_ics2115_irq, SNDRV_ENABLED ",allows:{{9},{11},{12},{15}},dialog:list");
MODULE_PARM(snd_ics2115_port, "1-" __MODULE_STRING(SNDRV_CARDS) "l");
MODULE_PARM_DESC(snd_ics2115_port, "Port # for ICS2115.");
MODULE_PARM_SYNTAX(snd_ics2115_port, SNDRV_PORT12_DESC);
MODULE_PARM(snd_fm_port, "1-" __MODULE_STRING(SNDRV_CARDS) "l");
MODULE_PARM_DESC(snd_fm_port, "FM port #.");
MODULE_PARM_SYNTAX(snd_fm_port, SNDRV_PORT12_DESC);
MODULE_PARM(snd_use_cs4232_midi, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
MODULE_PARM_DESC(snd_use_cs4232_midi, "Use CS4232 MPU-401 interface (inaccessibly located inside your computer)");
MODULE_PARM_SYNTAX(snd_use_cs4232_midi, SNDRV_ENABLED "," SNDRV_BOOLEAN_FALSE_DESC);

static snd_card_t *snd_wavefront_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;

#ifdef __ISAPNP__

static struct isapnp_card *snd_wavefront_isapnp_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
static const struct isapnp_card_id *snd_wavefront_isapnp_id[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;

static struct isapnp_card_id snd_wavefront_pnpids[] __devinitdata = {
	{
		ISAPNP_CARD_ID('C','S','C',0x7532),	/* Tropez */
		devs: { ISAPNP_DEVICE_ID('C','S','C',0x0000),	/* WSS */
			ISAPNP_DEVICE_ID('C','S','C',0x0010),	/* CTRL */
			ISAPNP_DEVICE_ID('P','n','P',0xb006),	/* MPU */
			ISAPNP_DEVICE_ID('C','S','C',000004), }, /* SYNTH */
	},
	{
		ISAPNP_CARD_ID('C','S','C',0x7632),	/* Tropez+ */
		devs: { ISAPNP_DEVICE_ID('C','S','C',0x0000),	/* WSS */
			ISAPNP_DEVICE_ID('C','S','C',0x0010),	/* CTRL */
			ISAPNP_DEVICE_ID('P','n','P',0xb006),	/* MPU */
			ISAPNP_DEVICE_ID('C','S','C',000004), }, /* SYNTH */
	},
	{ ISAPNP_CARD_END, }
};

ISAPNP_CARD_TABLE(snd_wavefront_pnpids);

static int __init
snd_wavefront_isapnp (int dev, snd_wavefront_card_t *acard)
{
	const struct isapnp_card_id *id = snd_wavefront_isapnp_id[dev];
	struct isapnp_card *card = snd_wavefront_isapnp_cards[dev];
	struct isapnp_dev *pdev;
	int tmp;

	/* Check for each logical device. */

	/* CS4232 chip (aka "windows sound system") is logical device 0 */

	acard->wss = isapnp_find_dev(card, id->devs[0].vendor, id->devs[0].function, NULL);
	if (acard->wss->active) {
		acard->wss = NULL;
		return -EBUSY;
	}

	/* there is a game port at logical device 1, but we ignore it completely */

	/* the control interface is logical device 2, but we ignore it
	   completely. in fact, nobody even seems to know what it
	   does.
	*/

	/* Only configure the CS4232 MIDI interface if its been
	   specifically requested. It is logical device 3.
	*/

	if (snd_use_cs4232_midi[dev]) {
		acard->mpu = isapnp_find_dev(card, id->devs[2].vendor, id->devs[2].function, NULL);
		if (acard->mpu->active) {
			acard->wss = acard->synth = acard->mpu = NULL;
			return -EBUSY;
		}
	}

	/* The ICS2115 synth is logical device 4 */

	acard->synth = isapnp_find_dev(card, id->devs[3].vendor, id->devs[3].function, NULL);
	if (acard->synth->active) {
		acard->wss = acard->synth = NULL;
		return -EBUSY;
	}

	/* PCM/FM initialization */

	pdev = acard->wss;

	if ((tmp = pdev->prepare (pdev)) < 0) {
		if (tmp == -EBUSY) {
			snd_printk ("ISA PnP configuration appears to have "
				    "been done. Restart the isapnp module.\n");
			return 0;
		}
		snd_printk ("isapnp WSS preparation failed\n");
		return -EAGAIN;
	}

	/* An interesting note from the Tropez+ FAQ:

	   Q. [Ports] Why is the base address of the WSS I/O ports off by 4?

	   A. WSS I/O requires a block of 8 I/O addresses ("ports"). Of these, the first
	   4 are used to identify and configure the board. With the advent of PnP,
	   these first 4 addresses have become obsolete, and software applications
	   only use the last 4 addresses to control the codec chip. Therefore, the
	   base address setting "skips past" the 4 unused addresses.

	*/

	if (snd_cs4232_pcm_port[dev] != SNDRV_AUTO_PORT)
		isapnp_resource_change(&pdev->resource[0], snd_cs4232_pcm_port[dev], 4);
	if (snd_fm_port[dev] != SNDRV_AUTO_PORT)
		isapnp_resource_change(&pdev->resource[1], snd_fm_port[dev], 4);
	if (snd_dma1[dev] != SNDRV_AUTO_DMA)
		isapnp_resource_change(&pdev->dma_resource[0], snd_dma1[dev], 1);
	if (snd_dma2[dev] != SNDRV_AUTO_DMA)
		isapnp_resource_change(&pdev->dma_resource[1], snd_dma2[dev], 1);
	if (snd_cs4232_pcm_irq[dev] != SNDRV_AUTO_IRQ)
		isapnp_resource_change(&pdev->irq_resource[0], snd_cs4232_pcm_irq[dev], 1);

	if (pdev->activate(pdev)<0) {
		snd_printk ("isapnp WSS activation failed\n");
		return -EBUSY;
	}

	snd_cs4232_pcm_port[dev] = pdev->resource[0].start;
	snd_fm_port[dev] = pdev->resource[1].start;
	snd_dma1[dev] = pdev->dma_resource[0].start;
	snd_dma2[dev] = pdev->dma_resource[1].start;
	snd_cs4232_pcm_irq[dev] = pdev->irq_resource[0].start;

	/* Synth initialization */

	pdev = acard->synth;
	
	if ((tmp = pdev->prepare(pdev))<0) {
		if (tmp == -EBUSY) {
			snd_printk ("ISA PnP configuration appears to have "
				    "been done. Restart the isapnp module.\n");
		}
		acard->wss->deactivate(acard->wss);
		snd_printk ("ICS2115 synth preparation failed\n");
		return -EAGAIN;
	}
	if (snd_ics2115_port[dev] != SNDRV_AUTO_PORT) {
		isapnp_resource_change(&pdev->resource[0], snd_ics2115_port[dev], 16);
	}
		
	if (snd_ics2115_port[dev] != SNDRV_AUTO_IRQ) {
		isapnp_resource_change(&pdev->irq_resource[0], snd_ics2115_irq[dev], 1);
	}

	if (pdev->activate(pdev)<0) {
		snd_printk("isapnp activation for ICS2115 failed\n");
		acard->wss->deactivate(acard->wss);
		return -EBUSY;
	}

	snd_ics2115_port[dev] = pdev->resource[0].start;
	snd_ics2115_irq[dev] = pdev->irq_resource[0].start;

	/* CS4232 MPU initialization. Configure this only if
	   explicitly requested, since its physically inaccessible and
	   consumes another IRQ.
	*/

	if (snd_use_cs4232_midi[dev]) {

		pdev = acard->mpu;

		if (pdev->prepare(pdev)<0) {
			acard->wss->deactivate(acard->wss);
			if (acard->synth)
				acard->synth->deactivate(acard->synth);
			snd_printk ("CS4232 MPU preparation failed\n");
			return -EAGAIN;
		}

		if (snd_cs4232_mpu_port[dev] != SNDRV_AUTO_PORT)
			isapnp_resource_change(&pdev->resource[0], snd_cs4232_mpu_port[dev], 2);
		if (snd_cs4232_mpu_irq[dev] != SNDRV_AUTO_IRQ)
			isapnp_resource_change(&pdev->resource[0], snd_cs4232_mpu_irq[dev], 1);

		if (pdev->activate(pdev)<0) {
			snd_printk("isapnp CS4232 MPU activation failed\n");
			snd_cs4232_mpu_port[dev] = SNDRV_AUTO_PORT;
		} else {
			snd_cs4232_mpu_port[dev] = pdev->resource[0].start;
			snd_cs4232_mpu_irq[dev] = pdev->irq_resource[0].start;
		}

		snd_printk ("CS4232 MPU: port=0x%lx, irq=%i\n", 
			    snd_cs4232_mpu_port[dev], 
			    snd_cs4232_mpu_irq[dev]);
	}

	snd_printdd ("CS4232: pcm port=0x%lx, fm port=0x%lx, dma1=%i, dma2=%i, irq=%i\nICS2115: port=0x%lx, irq=%i\n", 
		    snd_cs4232_pcm_port[dev], 
		    snd_fm_port[dev],
		    snd_dma1[dev], 
		    snd_dma2[dev], 
		    snd_cs4232_pcm_irq[dev],
		    snd_ics2115_port[dev], 
		    snd_ics2115_irq[dev]);
	
	return 0;
}

static void 
snd_wavefront_deactivate (snd_wavefront_card_t *acard)
{
	snd_printk ("deactivating PnP devices\n");
	if (acard->wss) {
		acard->wss->deactivate(acard->wss);
		acard->wss = NULL;
	}
	if (acard->ctrl) {
		acard->ctrl->deactivate(acard->ctrl);
		acard->ctrl = NULL;
	}
	if (acard->mpu) {
		acard->mpu->deactivate(acard->mpu);
		acard->mpu = NULL;
	}
	if (acard->synth) {
		acard->synth->deactivate(acard->synth);
		acard->synth = NULL;
	}
}

#endif /* __ISAPNP__ */

static void snd_wavefront_ics2115_interrupt(int irq, 
					    void *dev_id, 
					    struct pt_regs *regs)
{
	snd_wavefront_card_t *acard;

	acard = (snd_wavefront_card_t *) dev_id;

	if (acard == NULL) 
		return;

	if (acard->wavefront.interrupts_are_midi) {
		snd_wavefront_midi_interrupt (acard);
	} else {
		snd_wavefront_internal_interrupt (acard);
	}
}

snd_hwdep_t * __init
snd_wavefront_new_synth (snd_card_t *card,
			 int hw_dev,
			 snd_wavefront_card_t *acard)
{
	snd_hwdep_t *wavefront_synth;

	if (snd_wavefront_detect (acard) < 0) {
		return NULL;
	}

	if (snd_wavefront_start (&acard->wavefront) < 0) {
		return NULL;
	}

	if (snd_hwdep_new(card, "WaveFront", hw_dev, &wavefront_synth) < 0)
		return NULL;
	strcpy (wavefront_synth->name, 
		"WaveFront (ICS2115) wavetable synthesizer");
	wavefront_synth->ops.open = snd_wavefront_synth_open;
	wavefront_synth->ops.release = snd_wavefront_synth_release;
	wavefront_synth->ops.ioctl = snd_wavefront_synth_ioctl;

	return wavefront_synth;
}

snd_hwdep_t * __init
snd_wavefront_new_fx (snd_card_t *card,
		      int hw_dev,
		      snd_wavefront_card_t *acard,
		      unsigned long port)

{
	snd_hwdep_t *fx_processor;

	if (snd_wavefront_fx_start (&acard->wavefront)) {
		snd_printk ("cannot initialize YSS225 FX processor");
		return NULL;
	}

	if (snd_hwdep_new (card, "YSS225", hw_dev, &fx_processor) < 0)
		return NULL;
	sprintf (fx_processor->name, "YSS225 FX Processor at 0x%lx", port);
	fx_processor->ops.open = snd_wavefront_fx_open;
	fx_processor->ops.release = snd_wavefront_fx_release;
	fx_processor->ops.ioctl = snd_wavefront_fx_ioctl;
	
	return fx_processor;
}

static snd_wavefront_mpu_id internal_id = internal_mpu;
static snd_wavefront_mpu_id external_id = external_mpu;

snd_rawmidi_t * __init
snd_wavefront_new_midi (snd_card_t *card,
			int midi_dev,
			snd_wavefront_card_t *acard,