aedsp16.c

iis s3c2410-uda1341语音系统的 开发

		return FALSE;
#endif

#endif

	return TRUE;
}

static int __init aedsp16_stdcfg(int port) {
	if (aedsp16_write(port, WRITE_MDIRQ_CFG)) {
		printk("[AEDSP16] CMD 0x%x: failed!\n", WRITE_MDIRQ_CFG);
		return FALSE;
	}
	/*
	 * 0x0A == (IRQ 7, DMA 1, MIRQ 0)
	 */
	if (aedsp16_write(port, 0x0A)) {
		printk("[AEDSP16] aedsp16_stdcfg: failed!\n");
		return FALSE;
	}
	return TRUE;
}

static int __init aedsp16_dsp_version(int port)
{
	int             len = 0;
	int             ret;

	DBG(("Get DSP Version:\n"));

	if (aedsp16_write(ae_config.base_io, GET_DSP_VERSION)) {
		printk("[AEDSP16] CMD 0x%x: failed!\n", GET_DSP_VERSION);
		DBG(("failed.\n"));
		return FALSE;
	}

	do {
		if ((ret = aedsp16_read(port)) == -1) {
			DBG(("failed.\n"));
			return FALSE;
		}
	/*
	 * We already know how many int are stored (2), so we know when the
	 * string is finished.
	 */
		ver[len++] = ret;
	  } while (len < CARDVERLEN);
	sprintf(DSPVersion, "%d.%d", ver[0], ver[1]);

	DBG(("success.\n"));

	return TRUE;
}

static int __init aedsp16_dsp_copyright(int port)
{
	int             len = 0;
	int             ret;

	DBG(("Get DSP Copyright:\n"));

	if (aedsp16_write(ae_config.base_io, GET_DSP_COPYRIGHT)) {
		printk("[AEDSP16] CMD 0x%x: failed!\n", GET_DSP_COPYRIGHT);
		DBG(("failed.\n"));
		return FALSE;
	}

	do {
		if ((ret = aedsp16_read(port)) == -1) {
	/*
	 * If no more data available, return to the caller, no error if len>0.
	 * We have no other way to know when the string is finished.
	 */
			if (len)
				break;
			else {
				DBG(("failed.\n"));
				return FALSE;
			}
		}

		DSPCopyright[len++] = ret;

	  } while (len < CARDNAMELEN);

	DBG(("success.\n"));

	return TRUE;
}

static void __init aedsp16_init_tables(void)
{
	int i = 0;

	memset(DSPCopyright, 0, CARDNAMELEN + 1);
	memset(DSPVersion, 0, CARDVERLEN + 1);

	for (i = 0; orIRQ[i].or; i++)
		if (orIRQ[i].val == ae_config.irq) {
			soft_cfg |= orIRQ[i].or;
			soft_cfg_mss |= orIRQ[i].or;
		}

	for (i = 0; orMIRQ[i].or; i++)
		if (orMIRQ[i].or == ae_config.mpu_irq)
			soft_cfg |= orMIRQ[i].or;

	for (i = 0; orDMA[i].or; i++)
		if (orDMA[i].val == ae_config.dma) {
			soft_cfg |= orDMA[i].or;
			soft_cfg_mss |= orDMA[i].or;
		}
}

static int __init aedsp16_init_board(void)
{
	aedsp16_init_tables();

	if (aedsp16_dsp_reset(ae_config.base_io) == FALSE) {
		printk("[AEDSP16] aedsp16_dsp_reset: failed!\n");
		return FALSE;
	}
	if (aedsp16_dsp_copyright(ae_config.base_io) == FALSE) {
		printk("[AEDSP16] aedsp16_dsp_copyright: failed!\n");
		return FALSE;
	}

	/*
	 * My AEDSP16 card return SC-6000 in DSPCopyright, so
	 * if we have something different, we have to be warned.
	 */
	if (strcmp("SC-6000", DSPCopyright))
		printk("[AEDSP16] Warning: non SC-6000 audio card!\n");

	if (aedsp16_dsp_version(ae_config.base_io) == FALSE) {
		printk("[AEDSP16] aedsp16_dsp_version: failed!\n");
		return FALSE;
	}

	if (aedsp16_stdcfg(ae_config.base_io) == FALSE) {
		printk("[AEDSP16] aedsp16_stdcfg: failed!\n");
		return FALSE;
	}

#if defined(CONFIG_SC6600)
	if (aedsp16_hard_read(ae_config.base_io) == FALSE) {
		printk("[AEDSP16] aedsp16_hard_read: failed!\n");
		return FALSE;
	}

	aedsp16_hard_decode();

	aedsp16_hard_encode();

	if (aedsp16_hard_write(ae_config.base_io) == FALSE) {
		printk("[AEDSP16] aedsp16_hard_write: failed!\n");
		return FALSE;
	}

	if (aedsp16_ext_cfg_write(ae_config.base_io) == FALSE) {
		printk("[AEDSP16] aedsp16_ext_cfg_write: failed!\n");
		return FALSE;
	}
#endif /* CONFIG_SC6600 */

	if (aedsp16_setup_board(ae_config.base_io) == FALSE) {
		printk("[AEDSP16] aedsp16_setup_board: failed!\n");
		return FALSE;
	}

	if (ae_config.mss_base != -1) {
		if (ae_config.init & INIT_MSS) {
			if (aedsp16_init_mss(ae_config.base_io) == FALSE) {
				printk("[AEDSP16] Can not initialize"
				       "Microsoft Sound System mode.\n");
				return FALSE;
			}
		}
	}

#if !defined(MODULE) || defined(AEDSP16_INFO) || defined(AEDSP16_DEBUG)

	printk("Audio Excel DSP 16 init v%s (%s %s) [",
		VERSION, DSPCopyright,
		DSPVersion);

	if (ae_config.mpu_base != -1) {
		if (ae_config.init & INIT_MPU401) {
			printk("MPU401");
			if ((ae_config.init & INIT_MSS) ||
			    (ae_config.init & INIT_SBPRO))
				printk(" ");
		}
	}

	if (ae_config.mss_base == -1) {
		if (ae_config.init & INIT_SBPRO) {
			printk("SBPro");
			if (ae_config.init & INIT_MSS)
				printk(" ");
		}
	}

	if (ae_config.mss_base != -1)
		if (ae_config.init & INIT_MSS)
			printk("MSS");

	printk("]\n");
#endif /* MODULE || AEDSP16_INFO || AEDSP16_DEBUG */

	mdelay(10);

	return TRUE;
}

static int __init init_aedsp16_sb(void)
{
	DBG(("init_aedsp16_sb: "));

/*
 * If the card is already init'ed MSS, we can not init it to SBPRO too
 * because the board can not emulate simultaneously MSS and SBPRO.
 */
	if (ae_config.init & INIT_MSS)
		return FALSE;
	if (ae_config.init & INIT_SBPRO)
		return FALSE;

	ae_config.init |= INIT_SBPRO;

	DBG(("done.\n"));

	return TRUE;
}

static void __init uninit_aedsp16_sb(void)
{
	DBG(("uninit_aedsp16_sb: "));

	ae_config.init &= ~INIT_SBPRO;

	DBG(("done.\n"));
}

static int __init init_aedsp16_mss(void)
{
	DBG(("init_aedsp16_mss: "));

/*
 * If the card is already init'ed SBPRO, we can not init it to MSS too
 * because the board can not emulate simultaneously MSS and SBPRO.
 */
	if (ae_config.init & INIT_SBPRO)
		return FALSE;
	if (ae_config.init & INIT_MSS)
		return FALSE;
/*
 * We must allocate the CONFIG_AEDSP16_BASE region too because these are the 
 * I/O ports to access card's control registers.
 */
	if (!(ae_config.init & INIT_MPU401)) {
		if (!request_region(ae_config.base_io, IOBASE_REGION_SIZE,
				"aedsp16 (base)")) {
			printk(
			"AEDSP16 BASE I/O port region is already in use.\n");
			return FALSE;
		}
	}

	ae_config.init |= INIT_MSS;

	DBG(("done.\n"));

	return TRUE;
}

static void __init uninit_aedsp16_mss(void)
{
	DBG(("uninit_aedsp16_mss: "));

	if ((!(ae_config.init & INIT_MPU401)) &&
	   (ae_config.init & INIT_MSS)) {
		release_region(ae_config.base_io, IOBASE_REGION_SIZE);
		DBG(("AEDSP16 base region released.\n"));
	}

	ae_config.init &= ~INIT_MSS;
	DBG(("done.\n"));
}

static int __init init_aedsp16_mpu(void)
{
	DBG(("init_aedsp16_mpu: "));

	if (ae_config.init & INIT_MPU401)
		return FALSE;

/*
 * We must request the CONFIG_AEDSP16_BASE region too because these are the I/O 
 * ports to access card's control registers.
 */
	if (!(ae_config.init & (INIT_MSS | INIT_SBPRO))) {
		if (!request_region(ae_config.base_io, IOBASE_REGION_SIZE,
					"aedsp16 (base)")) {
			printk(
			"AEDSP16 BASE I/O port region is already in use.\n");
			return FALSE;
		}
	}

	ae_config.init |= INIT_MPU401;

	DBG(("done.\n"));

	return TRUE;
}

static void __init uninit_aedsp16_mpu(void)
{
	DBG(("uninit_aedsp16_mpu: "));

	if ((!(ae_config.init & (INIT_MSS | INIT_SBPRO))) &&
	   (ae_config.init & INIT_MPU401)) {
		release_region(ae_config.base_io, IOBASE_REGION_SIZE);
		DBG(("AEDSP16 base region released.\n"));
	}

	ae_config.init &= ~INIT_MPU401;

	DBG(("done.\n"));
}

int __init init_aedsp16(void)
{
	int initialized = FALSE;

	DBG(("Initializing BASE[0x%x] IRQ[%d] DMA[%d] MIRQ[%d]\n",
	     ae_config.base_io,ae_config.irq,ae_config.dma,ae_config.mpu_irq));

	if (ae_config.mss_base == -1) {
		if (init_aedsp16_sb() == FALSE) {
			uninit_aedsp16_sb();
		} else {
			initialized = TRUE;
		}
	}

	if (ae_config.mpu_base != -1) {
		if (init_aedsp16_mpu() == FALSE) {
			uninit_aedsp16_mpu();
		} else {
			initialized = TRUE;
		}
	}

/*
 * In the sequence of init routines, the MSS init MUST be the last!
 * This because of the special register programming the MSS mode needs.
 * A board reset would disable the MSS mode restoring the default SBPRO
 * mode.
 */
	if (ae_config.mss_base != -1) {
		if (init_aedsp16_mss() == FALSE) {
			uninit_aedsp16_mss();
		} else {
			initialized = TRUE;
		}
	}

	if (initialized)
		initialized = aedsp16_init_board();
	return initialized;
}

void __init uninit_aedsp16(void)
{
	if (ae_config.mss_base != -1)
		uninit_aedsp16_mss();
	else
		uninit_aedsp16_sb();
	if (ae_config.mpu_base != -1)
		uninit_aedsp16_mpu();
}

static int __initdata io = -1;
static int __initdata irq = -1;
static int __initdata dma = -1;
static int __initdata mpu_irq = -1;
static int __initdata mss_base = -1;
static int __initdata mpu_base = -1;

MODULE_PARM(io, "i");
MODULE_PARM_DESC(io, "I/O base address (0x220 0x240)");
MODULE_PARM(irq, "i");
MODULE_PARM_DESC(irq, "IRQ line (5 7 9 10 11)");
MODULE_PARM(dma, "i");
MODULE_PARM_DESC(dma, "dma line (0 1 3)");
MODULE_PARM(mpu_irq, "i");
MODULE_PARM_DESC(mpu_irq, "MPU-401 IRQ line (5 7 9 10 0)");
MODULE_PARM(mss_base, "i");
MODULE_PARM_DESC(mss_base, "MSS emulation I/O base address (0x530 0xE80)");
MODULE_PARM(mpu_base, "i");
MODULE_PARM_DESC(mpu_base,"MPU-401 I/O base address (0x300 0x310 0x320 0x330)");
MODULE_AUTHOR("Riccardo Facchetti <[e-mail]>");
MODULE_DESCRIPTION("Audio Excel DSP 16 Driver Version " VERSION);
MODULE_LICENSE("GPL");

static int __init do_init_aedsp16(void) {
	printk("Audio Excel DSP 16 init driver Copyright (C) Riccardo Facchetti 1995-98\n");
	if (io == -1 || dma == -1 || irq == -1) {
		printk(KERN_INFO "aedsp16: I/O, IRQ and DMA are mandatory\n");
		return -EINVAL;
	}

	ae_config.base_io = io;
	ae_config.irq = irq;
	ae_config.dma = dma;

	ae_config.mss_base = mss_base;
	ae_config.mpu_base = mpu_base;
	ae_config.mpu_irq = mpu_irq;

	if (init_aedsp16() == FALSE) {
		printk(KERN_ERR "aedsp16: initialization failed\n");
		/*
		 * XXX
		 * What error should we return here ?
		 */
		return -EINVAL;
	}
	return 0;
}

static void __exit cleanup_aedsp16(void) {
	uninit_aedsp16();
}

module_init(do_init_aedsp16);
module_exit(cleanup_aedsp16);

#ifndef MODULE
static int __init setup_aedsp16(char *str)
{
	/* io, irq, dma, mss_io, mpu_io, mpu_irq */
	int ints[7];
	
	str = get_options(str, ARRAY_SIZE(ints), ints);

	io	 = ints[1];
	irq	 = ints[2];
	dma	 = ints[3];
	mss_base = ints[4];
	mpu_base = ints[5];
	mpu_irq	 = ints[6];
	return 1;
}

__setup("aedsp16=", setup_aedsp16);
#endif