es18xx.c

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/*
 * The chipset specific mixer controls
 */
static struct snd_kcontrol_new snd_es18xx_opt_speaker =
	ES18XX_SINGLE("PC Speaker Playback Volume", 0, 0x3c, 0, 7, 0);

static struct snd_kcontrol_new snd_es18xx_opt_1869[] = {
ES18XX_SINGLE("Capture Switch", 0, 0x1c, 4, 1, 1),
ES18XX_SINGLE("Video Playback Switch", 0, 0x7f, 0, 1, 0),
ES18XX_DOUBLE("Mono Playback Volume", 0, 0x6d, 0x6d, 4, 0, 15, 0),
ES18XX_DOUBLE("Mono Capture Volume", 0, 0x6f, 0x6f, 4, 0, 15, 0)
};

static struct snd_kcontrol_new snd_es18xx_opt_1878 =
	ES18XX_DOUBLE("Video Playback Volume", 0, 0x68, 0x68, 4, 0, 15, 0);

static struct snd_kcontrol_new snd_es18xx_opt_1879[] = {
ES18XX_SINGLE("Video Playback Switch", 0, 0x71, 6, 1, 0),
ES18XX_DOUBLE("Video Playback Volume", 0, 0x6d, 0x6d, 4, 0, 15, 0),
ES18XX_DOUBLE("Video Capture Volume", 0, 0x6f, 0x6f, 4, 0, 15, 0)
};

static struct snd_kcontrol_new snd_es18xx_pcm1_controls[] = {
ES18XX_DOUBLE("PCM Playback Volume", 0, 0x14, 0x14, 4, 0, 15, 0),
};

static struct snd_kcontrol_new snd_es18xx_pcm2_controls[] = {
ES18XX_DOUBLE("PCM Playback Volume", 0, 0x7c, 0x7c, 4, 0, 15, 0),
ES18XX_DOUBLE("PCM Playback Volume", 1, 0x14, 0x14, 4, 0, 15, 0)
};

static struct snd_kcontrol_new snd_es18xx_spatializer_controls[] = {
ES18XX_SINGLE("3D Control - Level", 0, 0x52, 0, 63, 0),
{
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "3D Control - Switch",
	.info = snd_es18xx_info_spatializer_enable,
	.get = snd_es18xx_get_spatializer_enable,
	.put = snd_es18xx_put_spatializer_enable,
}
};

static struct snd_kcontrol_new snd_es18xx_micpre1_control = 
ES18XX_SINGLE("Mic Boost (+26dB)", 0, 0xa9, 2, 1, 0);

static struct snd_kcontrol_new snd_es18xx_micpre2_control =
ES18XX_SINGLE("Mic Boost (+26dB)", 0, 0x7d, 3, 1, 0);

static struct snd_kcontrol_new snd_es18xx_hw_volume_controls[] = {
{
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Hardware Master Playback Volume",
	.access = SNDRV_CTL_ELEM_ACCESS_READ,
	.info = snd_es18xx_info_hw_volume,
	.get = snd_es18xx_get_hw_volume,
},
{
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Hardware Master Playback Switch",
	.access = SNDRV_CTL_ELEM_ACCESS_READ,
	.info = snd_es18xx_info_hw_switch,
	.get = snd_es18xx_get_hw_switch,
},
ES18XX_SINGLE("Hardware Master Volume Split", 0, 0x64, 7, 1, 0),
};

static int __devinit snd_es18xx_config_read(struct snd_es18xx *chip, unsigned char reg)
{
	int data;
	unsigned long flags;
        spin_lock_irqsave(&chip->ctrl_lock, flags);
	outb(reg, chip->ctrl_port);
	data = inb(chip->ctrl_port + 1);
        spin_unlock_irqrestore(&chip->ctrl_lock, flags);
	return data;
}

static void __devinit snd_es18xx_config_write(struct snd_es18xx *chip, 
					      unsigned char reg, unsigned char data)
{
	/* No need for spinlocks, this function is used only in
	   otherwise protected init code */
	outb(reg, chip->ctrl_port);
	outb(data, chip->ctrl_port + 1);
#ifdef REG_DEBUG
	snd_printk(KERN_DEBUG "Config reg %02x set to %02x\n", reg, data);
#endif
}

static int __devinit snd_es18xx_initialize(struct snd_es18xx *chip)
{
	int mask = 0;

        /* enable extended mode */
        snd_es18xx_dsp_command(chip, 0xC6);
	/* Reset mixer registers */
	snd_es18xx_mixer_write(chip, 0x00, 0x00);

        /* Audio 1 DMA demand mode (4 bytes/request) */
        snd_es18xx_write(chip, 0xB9, 2);
	if (chip->caps & ES18XX_CONTROL) {
		/* Hardware volume IRQ */
		snd_es18xx_config_write(chip, 0x27, chip->irq);
		if (chip->fm_port > 0 && chip->fm_port != SNDRV_AUTO_PORT) {
			/* FM I/O */
			snd_es18xx_config_write(chip, 0x62, chip->fm_port >> 8);
			snd_es18xx_config_write(chip, 0x63, chip->fm_port & 0xff);
		}
		if (chip->mpu_port > 0 && chip->mpu_port != SNDRV_AUTO_PORT) {
			/* MPU-401 I/O */
			snd_es18xx_config_write(chip, 0x64, chip->mpu_port >> 8);
			snd_es18xx_config_write(chip, 0x65, chip->mpu_port & 0xff);
			/* MPU-401 IRQ */
			snd_es18xx_config_write(chip, 0x28, chip->irq);
		}
		/* Audio1 IRQ */
		snd_es18xx_config_write(chip, 0x70, chip->irq);
		/* Audio2 IRQ */
		snd_es18xx_config_write(chip, 0x72, chip->irq);
		/* Audio1 DMA */
		snd_es18xx_config_write(chip, 0x74, chip->dma1);
		/* Audio2 DMA */
		snd_es18xx_config_write(chip, 0x75, chip->dma2);

		/* Enable Audio 1 IRQ */
		snd_es18xx_write(chip, 0xB1, 0x50);
		/* Enable Audio 2 IRQ */
		snd_es18xx_mixer_write(chip, 0x7A, 0x40);
		/* Enable Audio 1 DMA */
		snd_es18xx_write(chip, 0xB2, 0x50);
		/* Enable MPU and hardware volume interrupt */
		snd_es18xx_mixer_write(chip, 0x64, 0x42);
	}
	else {
		int irqmask, dma1mask, dma2mask;
		switch (chip->irq) {
		case 2:
		case 9:
			irqmask = 0;
			break;
		case 5:
			irqmask = 1;
			break;
		case 7:
			irqmask = 2;
			break;
		case 10:
			irqmask = 3;
			break;
		default:
			snd_printk(KERN_ERR "invalid irq %d\n", chip->irq);
			return -ENODEV;
		}
		switch (chip->dma1) {
		case 0:
			dma1mask = 1;
			break;
		case 1:
			dma1mask = 2;
			break;
		case 3:
			dma1mask = 3;
			break;
		default:
			snd_printk(KERN_ERR "invalid dma1 %d\n", chip->dma1);
			return -ENODEV;
		}
		switch (chip->dma2) {
		case 0:
			dma2mask = 0;
			break;
		case 1:
			dma2mask = 1;
			break;
		case 3:
			dma2mask = 2;
			break;
		case 5:
			dma2mask = 3;
			break;
		default:
			snd_printk(KERN_ERR "invalid dma2 %d\n", chip->dma2);
			return -ENODEV;
		}

		/* Enable and set Audio 1 IRQ */
		snd_es18xx_write(chip, 0xB1, 0x50 | (irqmask << 2));
		/* Enable and set Audio 1 DMA */
		snd_es18xx_write(chip, 0xB2, 0x50 | (dma1mask << 2));
		/* Set Audio 2 DMA */
		snd_es18xx_mixer_bits(chip, 0x7d, 0x07, 0x04 | dma2mask);
		/* Enable Audio 2 IRQ and DMA
		   Set capture mixer input */
		snd_es18xx_mixer_write(chip, 0x7A, 0x68);
		/* Enable and set hardware volume interrupt */
		snd_es18xx_mixer_write(chip, 0x64, 0x06);
		if (chip->mpu_port > 0 && chip->mpu_port != SNDRV_AUTO_PORT) {
			/* MPU401 share irq with audio
			   Joystick enabled
			   FM enabled */
			snd_es18xx_mixer_write(chip, 0x40, 0x43 | (chip->mpu_port & 0xf0) >> 1);
		}
		snd_es18xx_mixer_write(chip, 0x7f, ((irqmask + 1) << 1) | 0x01);
	}
	if (chip->caps & ES18XX_NEW_RATE) {
		/* Change behaviour of register A1
		   4x oversampling
		   2nd channel DAC asynchronous */
		snd_es18xx_mixer_write(chip, 0x71, 0x32);
	}
	if (!(chip->caps & ES18XX_PCM2)) {
		/* Enable DMA FIFO */
		snd_es18xx_write(chip, 0xB7, 0x80);
	}
	if (chip->caps & ES18XX_SPATIALIZER) {
		/* Set spatializer parameters to recommended values */
		snd_es18xx_mixer_write(chip, 0x54, 0x8f);
		snd_es18xx_mixer_write(chip, 0x56, 0x95);
		snd_es18xx_mixer_write(chip, 0x58, 0x94);
		snd_es18xx_mixer_write(chip, 0x5a, 0x80);
	}
	/* Flip the "enable I2S" bits for those chipsets that need it */
	switch (chip->version) {
	case 0x1879:
		//Leaving I2S enabled on the 1879 screws up the PCM playback (rate effected somehow)
		//so a Switch control has been added to toggle this 0x71 bit on/off:
		//snd_es18xx_mixer_bits(chip, 0x71, 0x40, 0x40);
		/* Note: we fall through on purpose here. */
	case 0x1878:
		snd_es18xx_config_write(chip, 0x29, snd_es18xx_config_read(chip, 0x29) | 0x40);
		break;
	}
	/* Mute input source */
	if (chip->caps & ES18XX_MUTEREC)
		mask = 0x10;
	if (chip->caps & ES18XX_RECMIX)
		snd_es18xx_mixer_write(chip, 0x1c, 0x05 | mask);
	else {
		snd_es18xx_mixer_write(chip, 0x1c, 0x00 | mask);
		snd_es18xx_write(chip, 0xb4, 0x00);
	}
#ifndef AVOID_POPS
	/* Enable PCM output */
	snd_es18xx_dsp_command(chip, 0xD1);
#endif

        return 0;
}

static int __devinit snd_es18xx_identify(struct snd_es18xx *chip)
{
	int hi,lo;

	/* reset */
	if (snd_es18xx_reset(chip) < 0) {
		snd_printk(KERN_ERR "reset at 0x%lx failed!!!\n", chip->port);
		return -ENODEV;
	}

	snd_es18xx_dsp_command(chip, 0xe7);
	hi = snd_es18xx_dsp_get_byte(chip);
	if (hi < 0) {
		return hi;
	}
	lo = snd_es18xx_dsp_get_byte(chip);
	if ((lo & 0xf0) != 0x80) {
		return -ENODEV;
	}
	if (hi == 0x48) {
		chip->version = 0x488;
		return 0;
	}
	if (hi != 0x68) {
		return -ENODEV;
	}
	if ((lo & 0x0f) < 8) {
		chip->version = 0x688;
		return 0;
	}
			
        outb(0x40, chip->port + 0x04);
	udelay(10);
	hi = inb(chip->port + 0x05);
	udelay(10);
	lo = inb(chip->port + 0x05);
	if (hi != lo) {
		chip->version = hi << 8 | lo;
		chip->ctrl_port = inb(chip->port + 0x05) << 8;
		udelay(10);
		chip->ctrl_port += inb(chip->port + 0x05);

		if ((chip->res_ctrl_port = request_region(chip->ctrl_port, 8, "ES18xx - CTRL")) == NULL) {
			snd_printk(KERN_ERR PFX "unable go grab port 0x%lx\n", chip->ctrl_port);
			return -EBUSY;
		}

		return 0;
	}

	/* If has Hardware volume */
	if (snd_es18xx_mixer_writable(chip, 0x64, 0x04)) {
		/* If has Audio2 */
		if (snd_es18xx_mixer_writable(chip, 0x70, 0x7f)) {
			/* If has volume count */
			if (snd_es18xx_mixer_writable(chip, 0x64, 0x20)) {
				chip->version = 0x1887;
			} else {
				chip->version = 0x1888;
			}
		} else {
			chip->version = 0x1788;
		}
	}
	else
		chip->version = 0x1688;
	return 0;
}

static int __devinit snd_es18xx_probe(struct snd_es18xx *chip)
{
	if (snd_es18xx_identify(chip) < 0) {
		snd_printk(KERN_ERR PFX "[0x%lx] ESS chip not found\n", chip->port);
                return -ENODEV;
	}

	switch (chip->version) {
	case 0x1868:
		chip->caps = ES18XX_DUPLEX_MONO | ES18XX_DUPLEX_SAME | ES18XX_CONTROL;
		break;
	case 0x1869:
		chip->caps = ES18XX_PCM2 | ES18XX_SPATIALIZER | ES18XX_RECMIX | ES18XX_NEW_RATE | ES18XX_AUXB | ES18XX_MONO | ES18XX_MUTEREC | ES18XX_CONTROL | ES18XX_HWV;
		break;
	case 0x1878:
		chip->caps = ES18XX_DUPLEX_MONO | ES18XX_DUPLEX_SAME | ES18XX_I2S | ES18XX_CONTROL;
		break;
	case 0x1879:
		chip->caps = ES18XX_PCM2 | ES18XX_SPATIALIZER | ES18XX_RECMIX | ES18XX_NEW_RATE | ES18XX_AUXB | ES18XX_I2S | ES18XX_CONTROL | ES18XX_HWV;
		break;
	case 0x1887:
		chip->caps = ES18XX_PCM2 | ES18XX_RECMIX | ES18XX_AUXB | ES18XX_DUPLEX_SAME;
		break;
	case 0x1888:
		chip->caps = ES18XX_PCM2 | ES18XX_RECMIX | ES18XX_AUXB | ES18XX_DUPLEX_SAME;
		break;
	default:
		snd_printk(KERN_ERR "[0x%lx] unsupported chip ES%x\n",
                           chip->port, chip->version);
                return -ENODEV;
        }

        snd_printd("[0x%lx] ESS%x chip found\n", chip->port, chip->version);

	if (chip->dma1 == chip->dma2)
		chip->caps &= ~(ES18XX_PCM2 | ES18XX_DUPLEX_SAME);

        return snd_es18xx_initialize(chip);
}

static struct snd_pcm_ops snd_es18xx_playback_ops = {
	.open =		snd_es18xx_playback_open,
	.close =	snd_es18xx_playback_close,
	.ioctl =	snd_pcm_lib_ioctl,
	.hw_params =	snd_es18xx_playback_hw_params,
	.hw_free =	snd_es18xx_pcm_hw_free,
	.prepare =	snd_es18xx_playback_prepare,
	.trigger =	snd_es18xx_playback_trigger,
	.pointer =	snd_es18xx_playback_pointer,
};

static struct snd_pcm_ops snd_es18xx_capture_ops = {
	.open =		snd_es18xx_capture_open,
	.close =	snd_es18xx_capture_close,
	.ioctl =	snd_pcm_lib_ioctl,
	.hw_params =	snd_es18xx_capture_hw_params,
	.hw_free =	snd_es18xx_pcm_hw_free,
	.prepare =	snd_es18xx_capture_prepare,
	.trigger =	snd_es18xx_capture_trigger,
	.pointer =	snd_es18xx_capture_pointer,
};

static int __devinit snd_es18xx_pcm(struct snd_es18xx *chip, int device, struct snd_pcm ** rpcm)
{
        struct snd_pcm *pcm;
	char str[16];
	int err;

	if (rpcm)
		*rpcm = NULL;
	sprintf(str, "ES%x", chip->version);
	if (chip->caps & ES18XX_PCM2)
		err = snd_pcm_new(chip->card, str, device, 2, 1, &pcm);
	else
		err = snd_pcm_new(chip->card, str, device, 1, 1, &pcm);
        if (err < 0)
                return err;

	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_es18xx_playback_ops);
	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_es18xx_capture_ops);

	/* global setup */
        pcm->private_data = chip;
        pcm->info_flags = 0;
	if (chip->caps & ES18XX_DUPLEX_SAME)
		pcm->info_flags |= SNDRV_PCM_INFO_JOINT_DUPLEX;
	if (! (chip->caps & ES18XX_PCM2))
		pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
	sprintf(pcm->name, "ESS AudioDrive ES%x", chip->version);
        chip->pcm = pcm;

	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
					      snd_dma_isa_data(),
					      64*1024,
					      chip->dma1 > 3 || chip->dma2 > 3 ? 128*1024 : 64*1024);

        if (rpcm)
        	*rpcm = pcm;
	return 0;
}

/* Power Management support functions */
#ifdef CONFIG_PM
static int snd_es18xx_suspend(struct snd_card *card, pm_message_t state)
{
	struct snd_audiodrive *acard = card->private_data;
	struct snd_es18xx *chip = acard->chip;

	snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);

	snd_pcm_suspend_all(chip->pcm);

	/* power down */
	chip->pm_reg = (unsigned char)snd_es18xx_read(chip, ES18XX_PM);
	chip->pm_reg |= (ES18XX_PM_FM | ES18XX_PM_SUS);
	snd_es18xx_write(chip, ES18XX_PM, chip->pm_reg);
	snd_es18xx_write(chip, ES18XX_PM, chip->pm_reg ^= ES18XX_PM_SUS);