fm801.c

Linux Kernel 2.6.9 for OMAP1710

		.write = snd_fm801_tea575x_64pcr_write,
		.read = snd_fm801_tea575x_64pcr_read,
	}
};
#endif

/*
 *  Mixer routines
 */

#define FM801_SINGLE(xname, reg, shift, mask, invert) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .info = snd_fm801_info_single, \
  .get = snd_fm801_get_single, .put = snd_fm801_put_single, \
  .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }

static int snd_fm801_info_single(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
{
	int mask = (kcontrol->private_value >> 16) & 0xff;

	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = mask;
	return 0;
}

static int snd_fm801_get_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	fm801_t *chip = snd_kcontrol_chip(kcontrol);
	int reg = kcontrol->private_value & 0xff;
	int shift = (kcontrol->private_value >> 8) & 0xff;
	int mask = (kcontrol->private_value >> 16) & 0xff;
	int invert = (kcontrol->private_value >> 24) & 0xff;

	ucontrol->value.integer.value[0] = (inw(chip->port + reg) >> shift) & mask;
	if (invert)
		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
	return 0;
}

static int snd_fm801_put_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	fm801_t *chip = snd_kcontrol_chip(kcontrol);
	int reg = kcontrol->private_value & 0xff;
	int shift = (kcontrol->private_value >> 8) & 0xff;
	int mask = (kcontrol->private_value >> 16) & 0xff;
	int invert = (kcontrol->private_value >> 24) & 0xff;
	unsigned short val;

	val = (ucontrol->value.integer.value[0] & mask);
	if (invert)
		val = mask - val;
	return snd_fm801_update_bits(chip, reg, mask << shift, val << shift);
}

#define FM801_DOUBLE(xname, reg, shift_left, shift_right, mask, invert) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .info = snd_fm801_info_double, \
  .get = snd_fm801_get_double, .put = snd_fm801_put_double, \
  .private_value = reg | (shift_left << 8) | (shift_right << 12) | (mask << 16) | (invert << 24) }

static int snd_fm801_info_double(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
{
	int mask = (kcontrol->private_value >> 16) & 0xff;

	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 2;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = mask;
	return 0;
}

static int snd_fm801_get_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	fm801_t *chip = snd_kcontrol_chip(kcontrol);
        int reg = kcontrol->private_value & 0xff;
	int shift_left = (kcontrol->private_value >> 8) & 0x0f;
	int shift_right = (kcontrol->private_value >> 12) & 0x0f;
	int mask = (kcontrol->private_value >> 16) & 0xff;
	int invert = (kcontrol->private_value >> 24) & 0xff;

	spin_lock_irq(&chip->reg_lock);
	ucontrol->value.integer.value[0] = (inw(chip->port + reg) >> shift_left) & mask;
	ucontrol->value.integer.value[1] = (inw(chip->port + reg) >> shift_right) & mask;
	spin_unlock_irq(&chip->reg_lock);
	if (invert) {
		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
		ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
	}
	return 0;
}

static int snd_fm801_put_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	fm801_t *chip = snd_kcontrol_chip(kcontrol);
	int reg = kcontrol->private_value & 0xff;
	int shift_left = (kcontrol->private_value >> 8) & 0x0f;
	int shift_right = (kcontrol->private_value >> 12) & 0x0f;
	int mask = (kcontrol->private_value >> 16) & 0xff;
	int invert = (kcontrol->private_value >> 24) & 0xff;
	unsigned short val1, val2;
 
	val1 = ucontrol->value.integer.value[0] & mask;
	val2 = ucontrol->value.integer.value[1] & mask;
	if (invert) {
		val1 = mask - val1;
		val2 = mask - val2;
	}
	return snd_fm801_update_bits(chip, reg,
				     (mask << shift_left) | (mask << shift_right),
				     (val1 << shift_left ) | (val2 << shift_right));
}

static int snd_fm801_info_mux(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
{
	static char *texts[5] = {
		"AC97 Primary", "FM", "I2S", "PCM", "AC97 Secondary"
	};
 
	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = 5;
	if (uinfo->value.enumerated.item > 4)
		uinfo->value.enumerated.item = 4;
	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
	return 0;
}

static int snd_fm801_get_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	fm801_t *chip = snd_kcontrol_chip(kcontrol);
        unsigned short val;
 
	val = inw(FM801_REG(chip, REC_SRC)) & 7;
	if (val > 4)
		val = 4;
        ucontrol->value.enumerated.item[0] = val;
        return 0;
}

static int snd_fm801_put_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	fm801_t *chip = snd_kcontrol_chip(kcontrol);
        unsigned short val;
 
        if ((val = ucontrol->value.enumerated.item[0]) > 4)
                return -EINVAL;
	return snd_fm801_update_bits(chip, FM801_REC_SRC, 7, val);
}

#define FM801_CONTROLS (sizeof(snd_fm801_controls)/sizeof(snd_kcontrol_new_t))

static snd_kcontrol_new_t snd_fm801_controls[] __devinitdata = {
FM801_DOUBLE("Wave Playback Volume", FM801_PCM_VOL, 0, 8, 31, 1),
FM801_SINGLE("Wave Playback Switch", FM801_PCM_VOL, 15, 1, 1),
FM801_DOUBLE("I2S Playback Volume", FM801_I2S_VOL, 0, 8, 31, 1),
FM801_SINGLE("I2S Playback Switch", FM801_I2S_VOL, 15, 1, 1),
FM801_DOUBLE("FM Playback Volume", FM801_FM_VOL, 0, 8, 31, 1),
FM801_SINGLE("FM Playback Switch", FM801_FM_VOL, 15, 1, 1),
{
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Digital Capture Source",
	.info = snd_fm801_info_mux,
	.get = snd_fm801_get_mux,
	.put = snd_fm801_put_mux,
}
};

#define FM801_CONTROLS_MULTI (sizeof(snd_fm801_controls_multi)/sizeof(snd_kcontrol_new_t))

static snd_kcontrol_new_t snd_fm801_controls_multi[] __devinitdata = {
FM801_SINGLE("AC97 2ch->4ch Copy Switch", FM801_CODEC_CTRL, 7, 1, 0),
FM801_SINGLE("AC97 18-bit Switch", FM801_CODEC_CTRL, 10, 1, 0),
FM801_SINGLE("IEC958 Capture Switch", FM801_I2S_MODE, 8, 1, 0),
FM801_SINGLE("IEC958 Raw Data Playback Switch", FM801_I2S_MODE, 9, 1, 0),
FM801_SINGLE("IEC958 Raw Data Capture Switch", FM801_I2S_MODE, 10, 1, 0),
FM801_SINGLE("IEC958 Playback Switch", FM801_GEN_CTRL, 2, 1, 0),
};

static void snd_fm801_mixer_free_ac97_bus(ac97_bus_t *bus)
{
	fm801_t *chip = bus->private_data;
	chip->ac97_bus = NULL;
}

static void snd_fm801_mixer_free_ac97(ac97_t *ac97)
{
	fm801_t *chip = ac97->private_data;
	if (ac97->num == 0) {
		chip->ac97 = NULL;
	} else {
		chip->ac97_sec = NULL;
	}
}

static int __devinit snd_fm801_mixer(fm801_t *chip)
{
	ac97_template_t ac97;
	unsigned int i;
	int err;
	static ac97_bus_ops_t ops = {
		.write = snd_fm801_codec_write,
		.read = snd_fm801_codec_read,
	};

	if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
		return err;
	chip->ac97_bus->private_free = snd_fm801_mixer_free_ac97_bus;

	memset(&ac97, 0, sizeof(ac97));
	ac97.private_data = chip;
	ac97.private_free = snd_fm801_mixer_free_ac97;
	if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
		return err;
	if (chip->secondary) {
		ac97.num = 1;
		ac97.addr = chip->secondary_addr;
		if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97_sec)) < 0)
			return err;
	}
	for (i = 0; i < FM801_CONTROLS; i++)
		snd_ctl_add(chip->card, snd_ctl_new1(&snd_fm801_controls[i], chip));
	if (chip->multichannel) {
		for (i = 0; i < FM801_CONTROLS_MULTI; i++)
			snd_ctl_add(chip->card, snd_ctl_new1(&snd_fm801_controls_multi[i], chip));
	}
	return 0;
}

/*
 *  initialization routines
 */

static int snd_fm801_free(fm801_t *chip)
{
	unsigned short cmdw;

	if (chip->irq < 0)
		goto __end_hw;

	/* interrupt setup - mask everything */
	cmdw = inw(FM801_REG(chip, IRQ_MASK));
	cmdw |= 0x00c3;
	outw(cmdw, FM801_REG(chip, IRQ_MASK));

      __end_hw:
#ifdef TEA575X_RADIO
	snd_tea575x_exit(&chip->tea);
#endif
	if (chip->irq >= 0)
		free_irq(chip->irq, (void *)chip);
	pci_release_regions(chip->pci);

	kfree(chip);
	return 0;
}

static int snd_fm801_dev_free(snd_device_t *device)
{
	fm801_t *chip = device->device_data;
	return snd_fm801_free(chip);
}

static int __devinit snd_fm801_create(snd_card_t * card,
				      struct pci_dev * pci,
				      int tea575x_tuner,
				      fm801_t ** rchip)
{
	fm801_t *chip;
	unsigned char rev, id;
	unsigned short cmdw;
	unsigned long timeout;
	int err;
	static snd_device_ops_t ops = {
		.dev_free =	snd_fm801_dev_free,
	};

	*rchip = NULL;
	if ((err = pci_enable_device(pci)) < 0)
		return err;
	chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
	if (chip == NULL)
		return -ENOMEM;
	spin_lock_init(&chip->reg_lock);
	chip->card = card;
	chip->pci = pci;
	chip->irq = -1;
	if ((err = pci_request_regions(pci, "FM801")) < 0) {
		kfree(chip);
		return err;
	}
	chip->port = pci_resource_start(pci, 0);
	if (request_irq(pci->irq, snd_fm801_interrupt, SA_INTERRUPT|SA_SHIRQ, "FM801", (void *)chip)) {
		snd_printk("unable to grab IRQ %d\n", chip->irq);
		snd_fm801_free(chip);
		return -EBUSY;
	}
	chip->irq = pci->irq;
	pci_set_master(pci);

	pci_read_config_byte(pci, PCI_REVISION_ID, &rev);
	if (rev >= 0xb1)	/* FM801-AU */
		chip->multichannel = 1;

	/* codec cold reset + AC'97 warm reset */
	outw((1<<5)|(1<<6), FM801_REG(chip, CODEC_CTRL));
	inw(FM801_REG(chip, CODEC_CTRL)); /* flush posting data */
	udelay(100);
	outw(0, FM801_REG(chip, CODEC_CTRL));

	timeout = (jiffies + (3 * HZ) / 4) + 1;		/* min 750ms */

	outw((1<<7) | (0 << FM801_AC97_ADDR_SHIFT), FM801_REG(chip, AC97_CMD));
	udelay(5);
	do {
		if ((inw(FM801_REG(chip, AC97_CMD)) & (3<<8)) == (1<<8))
			goto __ac97_secondary;
		set_current_state(TASK_UNINTERRUPTIBLE);
		schedule_timeout(1);
	} while (time_after(timeout, jiffies));
	snd_printk("Primary AC'97 codec not found\n");
	snd_fm801_free(chip);
	return -EIO;

      __ac97_secondary:
      	if (!chip->multichannel)	/* lookup is not required */
      		goto __ac97_ok;
	for (id = 3; id > 0; id--) {	/* my card has the secondary codec */
					/* at address #3, so the loop is inverted */

		timeout = jiffies + HZ / 20;

		outw((1<<7) | (id << FM801_AC97_ADDR_SHIFT) | AC97_VENDOR_ID1, FM801_REG(chip, AC97_CMD));
		udelay(5);
		do {
			if ((inw(FM801_REG(chip, AC97_CMD)) & (3<<8)) == (1<<8)) {
				cmdw = inw(FM801_REG(chip, AC97_DATA));
				if (cmdw != 0xffff && cmdw != 0) {
					chip->secondary = 1;
					chip->secondary_addr = id;
					goto __ac97_ok;
				}
			}
			set_current_state(TASK_UNINTERRUPTIBLE);
			schedule_timeout(1);
		} while (time_after(timeout, jiffies));
	}

	/* the recovery phase, it seems that probing for non-existing codec might */
	/* cause timeout problems */
	timeout = (jiffies + (3 * HZ) / 4) + 1;		/* min 750ms */

	outw((1<<7) | (0 << FM801_AC97_ADDR_SHIFT), FM801_REG(chip, AC97_CMD));
	udelay(5);
	do {
		if ((inw(FM801_REG(chip, AC97_CMD)) & (3<<8)) == (1<<8))
			goto __ac97_ok;
		set_current_state(TASK_UNINTERRUPTIBLE);
		schedule_timeout(1);
	} while (time_after(timeout, jiffies));
	snd_printk("Primary AC'97 codec not responding\n");
	snd_fm801_free(chip);
	return -EIO;

      __ac97_ok:

	/* init volume */
	outw(0x0808, FM801_REG(chip, PCM_VOL));
	outw(0x9f1f, FM801_REG(chip, FM_VOL));
	outw(0x8808, FM801_REG(chip, I2S_VOL));

	/* I2S control - I2S mode */
	outw(0x0003, FM801_REG(chip, I2S_MODE));

	/* interrupt setup - unmask MPU, PLAYBACK & CAPTURE */
	cmdw = inw(FM801_REG(chip, IRQ_MASK));
	cmdw &= ~0x0083;
	outw(cmdw, FM801_REG(chip, IRQ_MASK));

	/* interrupt clear */
	outw(FM801_IRQ_PLAYBACK|FM801_IRQ_CAPTURE|FM801_IRQ_MPU, FM801_REG(chip, IRQ_STATUS));

	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
		snd_fm801_free(chip);
		return err;
	}

	snd_card_set_dev(card, &pci->dev);

#ifdef TEA575X_RADIO
	if (tea575x_tuner > 0 && (tea575x_tuner & 0xffff) < 4) {
		chip->tea.dev_nr = tea575x_tuner >> 16;
		chip->tea.card = card;
		chip->tea.freq_fixup = 10700;
		chip->tea.private_data = chip;
		chip->tea.ops = &snd_fm801_tea_ops[(tea575x_tuner & 0xffff) - 1];
		snd_tea575x_init(&chip->tea);
	}
#endif

	*rchip = chip;
	return 0;
}

static int __devinit snd_card_fm801_probe(struct pci_dev *pci,
					  const struct pci_device_id *pci_id)
{
	static int dev;
	snd_card_t *card;
	fm801_t *chip;
	opl3_t *opl3;
	int err;

        if (dev >= SNDRV_CARDS)
                return -ENODEV;
	if (!enable[dev]) {
		dev++;
		return -ENOENT;
	}

	card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
	if (card == NULL)
		return -ENOMEM;
	if ((err = snd_fm801_create(card, pci, tea575x_tuner[dev], &chip)) < 0) {
		snd_card_free(card);
		return err;
	}

	strcpy(card->driver, "FM801");
	strcpy(card->shortname, "ForteMedia FM801-");
	strcat(card->shortname, chip->multichannel ? "AU" : "AS");
	sprintf(card->longname, "%s at 0x%lx, irq %i",
		card->shortname, chip->port, chip->irq);

	if ((err = snd_fm801_pcm(chip, 0, NULL)) < 0) {
		snd_card_free(card);
		return err;
	}
	if ((err = snd_fm801_mixer(chip)) < 0) {
		snd_card_free(card);
		return err;
	}
	if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_FM801,
				       FM801_REG(chip, MPU401_DATA), 1,
				       chip->irq, 0, &chip->rmidi)) < 0) {
		snd_card_free(card);
		return err;
	}
	if ((err = snd_opl3_create(card, FM801_REG(chip, OPL3_BANK0),
				   FM801_REG(chip, OPL3_BANK1),
				   OPL3_HW_OPL3_FM801, 1, &opl3)) < 0) {
		snd_card_free(card);
		return err;
	}
	if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
		snd_card_free(card);
		return err;
	}

	if ((err = snd_card_register(card)) < 0) {
		snd_card_free(card);
		return err;
	}
	pci_set_drvdata(pci, card);
	dev++;
	return 0;
}

static void __devexit snd_card_fm801_remove(struct pci_dev *pci)
{
	snd_card_free(pci_get_drvdata(pci));
	pci_set_drvdata(pci, NULL);
}

static struct pci_driver driver = {
	.name = "FM801",
	.id_table = snd_fm801_ids,
	.probe = snd_card_fm801_probe,
	.remove = __devexit_p(snd_card_fm801_remove),
};

static int __init alsa_card_fm801_init(void)
{
	return pci_module_init(&driver);
}

static void __exit alsa_card_fm801_exit(void)
{
	pci_unregister_driver(&driver);
}

module_init(alsa_card_fm801_init)
module_exit(alsa_card_fm801_exit)