via82xx.c

linux 内核源代码

	},
	{
		.subvendor = 0x1019,
		.subdevice = 0x0a85,
		.name = "ECS L7VMM2",
		.type = AC97_TUNE_HP_ONLY
	},
	{
		.subvendor = 0x1849,
		.subdevice = 0x3059,
		.name = "ASRock K7VM2",
		.type = AC97_TUNE_HP_ONLY	/* VT1616 */
	},
	{
		.subvendor = 0x14cd,
		.subdevice = 0x7002,
		.name = "Unknown",
		.type = AC97_TUNE_ALC_JACK
	},
	{
		.subvendor = 0x1071,
		.subdevice = 0x8590,
		.name = "Mitac Mobo",
		.type = AC97_TUNE_ALC_JACK
	},
	{
		.subvendor = 0x161f,
		.subdevice = 0x202b,
		.name = "Arima Notebook",
		.type = AC97_TUNE_HP_ONLY,
	},
	{
		.subvendor = 0x161f,
		.subdevice = 0x2032,
		.name = "Targa Traveller 811",
		.type = AC97_TUNE_HP_ONLY,
	},
	{
		.subvendor = 0x161f,
		.subdevice = 0x2032,
		.name = "m680x",
		.type = AC97_TUNE_HP_ONLY, /* http://launchpad.net/bugs/38546 */
	},
	{ } /* terminator */
};

static int __devinit snd_via82xx_mixer_new(struct via82xx *chip, const char *quirk_override)
{
	struct snd_ac97_template ac97;
	int err;
	static struct snd_ac97_bus_ops ops = {
		.write = snd_via82xx_codec_write,
		.read = snd_via82xx_codec_read,
		.wait = snd_via82xx_codec_wait,
	};

	if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
		return err;
	chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
	chip->ac97_bus->clock = chip->ac97_clock;

	memset(&ac97, 0, sizeof(ac97));
	ac97.private_data = chip;
	ac97.private_free = snd_via82xx_mixer_free_ac97;
	ac97.pci = chip->pci;
	ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
	if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
		return err;

	snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);

	if (chip->chip_type != TYPE_VIA686) {
		/* use slot 10/11 */
		snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
	}

	return 0;
}

#ifdef SUPPORT_JOYSTICK
#define JOYSTICK_ADDR	0x200
static int __devinit snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
{
	struct gameport *gp;
	struct resource *r;

	if (!joystick)
		return -ENODEV;

	r = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport");
	if (!r) {
		printk(KERN_WARNING "via82xx: cannot reserve joystick port 0x%#x\n",
		       JOYSTICK_ADDR);
		return -EBUSY;
	}

	chip->gameport = gp = gameport_allocate_port();
	if (!gp) {
		printk(KERN_ERR "via82xx: cannot allocate memory for gameport\n");
		release_and_free_resource(r);
		return -ENOMEM;
	}

	gameport_set_name(gp, "VIA686 Gameport");
	gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
	gameport_set_dev_parent(gp, &chip->pci->dev);
	gp->io = JOYSTICK_ADDR;
	gameport_set_port_data(gp, r);

	/* Enable legacy joystick port */
	*legacy |= VIA_FUNC_ENABLE_GAME;
	pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);

	gameport_register_port(chip->gameport);

	return 0;
}

static void snd_via686_free_gameport(struct via82xx *chip)
{
	if (chip->gameport) {
		struct resource *r = gameport_get_port_data(chip->gameport);

		gameport_unregister_port(chip->gameport);
		chip->gameport = NULL;
		release_and_free_resource(r);
	}
}
#else
static inline int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
{
	return -ENOSYS;
}
static inline void snd_via686_free_gameport(struct via82xx *chip) { }
#endif


/*
 *
 */

static int __devinit snd_via8233_init_misc(struct via82xx *chip)
{
	int i, err, caps;
	unsigned char val;

	caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
	for (i = 0; i < caps; i++) {
		snd_via8233_capture_source.index = i;
		err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
		if (err < 0)
			return err;
	}
	if (ac97_can_spdif(chip->ac97)) {
		err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
		if (err < 0)
			return err;
	}
	if (chip->chip_type != TYPE_VIA8233A) {
		/* when no h/w PCM volume control is found, use DXS volume control
		 * as the PCM vol control
		 */
		struct snd_ctl_elem_id sid;
		memset(&sid, 0, sizeof(sid));
		strcpy(sid.name, "PCM Playback Volume");
		sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
		if (! snd_ctl_find_id(chip->card, &sid)) {
			snd_printd(KERN_INFO "Using DXS as PCM Playback\n");
			err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_pcmdxs_volume_control, chip));
			if (err < 0)
				return err;
		}
		else /* Using DXS when PCM emulation is enabled is really weird */
		{
			/* Standalone DXS controls */
			err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs_volume_control, chip));
			if (err < 0)
				return err;
		}
	}
	/* select spdif data slot 10/11 */
	pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
	val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
	val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
	pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);

	return 0;
}

static int __devinit snd_via686_init_misc(struct via82xx *chip)
{
	unsigned char legacy, legacy_cfg;
	int rev_h = 0;

	legacy = chip->old_legacy;
	legacy_cfg = chip->old_legacy_cfg;
	legacy |= VIA_FUNC_MIDI_IRQMASK;	/* FIXME: correct? (disable MIDI) */
	legacy &= ~VIA_FUNC_ENABLE_GAME;	/* disable joystick */
	if (chip->revision >= VIA_REV_686_H) {
		rev_h = 1;
		if (mpu_port >= 0x200) {	/* force MIDI */
			mpu_port &= 0xfffc;
			pci_write_config_dword(chip->pci, 0x18, mpu_port | 0x01);
#ifdef CONFIG_PM
			chip->mpu_port_saved = mpu_port;
#endif
		} else {
			mpu_port = pci_resource_start(chip->pci, 2);
		}
	} else {
		switch (mpu_port) {	/* force MIDI */
		case 0x300:
		case 0x310:
		case 0x320:
		case 0x330:
			legacy_cfg &= ~(3 << 2);
			legacy_cfg |= (mpu_port & 0x0030) >> 2;
			break;
		default:			/* no, use BIOS settings */
			if (legacy & VIA_FUNC_ENABLE_MIDI)
				mpu_port = 0x300 + ((legacy_cfg & 0x000c) << 2);
			break;
		}
	}
	if (mpu_port >= 0x200 &&
	    (chip->mpu_res = request_region(mpu_port, 2, "VIA82xx MPU401"))
	    != NULL) {
		if (rev_h)
			legacy |= VIA_FUNC_MIDI_PNP;	/* enable PCI I/O 2 */
		legacy |= VIA_FUNC_ENABLE_MIDI;
	} else {
		if (rev_h)
			legacy &= ~VIA_FUNC_MIDI_PNP;	/* disable PCI I/O 2 */
		legacy &= ~VIA_FUNC_ENABLE_MIDI;
		mpu_port = 0;
	}

	pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
	pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
	if (chip->mpu_res) {
		if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
					mpu_port, MPU401_INFO_INTEGRATED,
					chip->irq, 0, &chip->rmidi) < 0) {
			printk(KERN_WARNING "unable to initialize MPU-401"
			       " at 0x%lx, skipping\n", mpu_port);
			legacy &= ~VIA_FUNC_ENABLE_MIDI;
		} else {
			legacy &= ~VIA_FUNC_MIDI_IRQMASK;	/* enable MIDI interrupt */
		}
		pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
	}

	snd_via686_create_gameport(chip, &legacy);

#ifdef CONFIG_PM
	chip->legacy_saved = legacy;
	chip->legacy_cfg_saved = legacy_cfg;
#endif

	return 0;
}


/*
 * proc interface
 */
static void snd_via82xx_proc_read(struct snd_info_entry *entry,
				  struct snd_info_buffer *buffer)
{
	struct via82xx *chip = entry->private_data;
	int i;
	
	snd_iprintf(buffer, "%s\n\n", chip->card->longname);
	for (i = 0; i < 0xa0; i += 4) {
		snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
	}
}

static void __devinit snd_via82xx_proc_init(struct via82xx *chip)
{
	struct snd_info_entry *entry;

	if (! snd_card_proc_new(chip->card, "via82xx", &entry))
		snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read);
}

/*
 *
 */

static int snd_via82xx_chip_init(struct via82xx *chip)
{
	unsigned int val;
	unsigned long end_time;
	unsigned char pval;

#if 0 /* broken on K7M? */
	if (chip->chip_type == TYPE_VIA686)
		/* disable all legacy ports */
		pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
#endif
	pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
	if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
		/* deassert ACLink reset, force SYNC */
		pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
				      VIA_ACLINK_CTRL_ENABLE |
				      VIA_ACLINK_CTRL_RESET |
				      VIA_ACLINK_CTRL_SYNC);
		udelay(100);
#if 1 /* FIXME: should we do full reset here for all chip models? */
		pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
		udelay(100);
#else
		/* deassert ACLink reset, force SYNC (warm AC'97 reset) */
		pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
				      VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
		udelay(2);
#endif
		/* ACLink on, deassert ACLink reset, VSR, SGD data out */
		/* note - FM data out has trouble with non VRA codecs !! */
		pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
		udelay(100);
	}
	
	/* Make sure VRA is enabled, in case we didn't do a
	 * complete codec reset, above */
	pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
	if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
		/* ACLink on, deassert ACLink reset, VSR, SGD data out */
		/* note - FM data out has trouble with non VRA codecs !! */
		pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
		udelay(100);
	}

	/* wait until codec ready */
	end_time = jiffies + msecs_to_jiffies(750);
	do {
		pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
		if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
			break;
		schedule_timeout_uninterruptible(1);
	} while (time_before(jiffies, end_time));

	if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
		snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val);

#if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
	snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
				 VIA_REG_AC97_SECONDARY_VALID |
				 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
	end_time = jiffies + msecs_to_jiffies(750);
	snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
				 VIA_REG_AC97_SECONDARY_VALID |
				 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
	do {
		if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
			chip->ac97_secondary = 1;
			goto __ac97_ok2;
		}
		schedule_timeout_uninterruptible(1);
	} while (time_before(jiffies, end_time));
	/* This is ok, the most of motherboards have only one codec */

      __ac97_ok2:
#endif

	if (chip->chip_type == TYPE_VIA686) {
		/* route FM trap to IRQ, disable FM trap */
		pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
		/* disable all GPI interrupts */
		outl(0, VIAREG(chip, GPI_INTR));
	}

	if (chip->chip_type != TYPE_VIA686) {
		/* Workaround for Award BIOS bug:
		 * DXS channels don't work properly with VRA if MC97 is disabled.
		 */
		struct pci_dev *pci;
		pci = pci_get_device(0x1106, 0x3068, NULL); /* MC97 */
		if (pci) {
			unsigned char data;
			pci_read_config_byte(pci, 0x44, &data);
			pci_write_config_byte(pci, 0x44, data | 0x40);
			pci_dev_put(pci);
		}
	}

	if (chip->chip_type != TYPE_VIA8233A) {
		int i, idx;
		for (idx = 0; idx < 4; idx++) {
			unsigned long port = chip->port + 0x10 * idx;
			for (i = 0; i < 2; i++) {
				chip->playback_volume[idx][i]=chip->playback_volume_c[i];
				outb(chip->playback_volume_c[i],
				     port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
			}
		}
	}

	return 0;
}

#ifdef CONFIG_PM
/*
 * power management
 */
static int snd_via82xx_suspend(struct pci_dev *pci, pm_message_t state)
{
	struct snd_card *card = pci_get_drvdata(pci);
	struct via82xx *chip = card->private_data;
	int i;

	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
	for (i = 0; i < 2; i++)
		snd_pcm_suspend_all(chip->pcms[i]);
	for (i = 0; i < chip->num_devs; i++)
		snd_via82xx_channel_reset(chip, &chip->devs[i]);
	synchronize_irq(chip->irq);
	snd_ac97_suspend(chip->ac97);

	/* save misc values */
	if (chip->chip_type != TYPE_VIA686) {
		pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
		chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
		chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
	}

	pci_disable_device(pci);
	pci_save_state(pci);
	pci_set_power_state(pci, pci_choose_state(pci, state));
	return 0;
}

static int snd_via82xx_resume(struct pci_dev *p