hda_intel.c

linux 内核源代码

static void azx_stop_chip(struct azx *chip)
{
	if (!chip->initialized)
		return;

	/* disable interrupts */
	azx_int_disable(chip);
	azx_int_clear(chip);

	/* disable CORB/RIRB */
	azx_free_cmd_io(chip);

	/* disable position buffer */
	azx_writel(chip, DPLBASE, 0);
	azx_writel(chip, DPUBASE, 0);

	chip->initialized = 0;
}

#ifdef CONFIG_SND_HDA_POWER_SAVE
/* power-up/down the controller */
static void azx_power_notify(struct hda_codec *codec)
{
	struct azx *chip = codec->bus->private_data;
	struct hda_codec *c;
	int power_on = 0;

	list_for_each_entry(c, &codec->bus->codec_list, list) {
		if (c->power_on) {
			power_on = 1;
			break;
		}
	}
	if (power_on)
		azx_init_chip(chip);
	else if (chip->running && power_save_controller)
		azx_stop_chip(chip);
}
#endif /* CONFIG_SND_HDA_POWER_SAVE */

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

	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
	for (i = 0; i < chip->pcm_devs; i++)
		snd_pcm_suspend_all(chip->pcm[i]);
	if (chip->initialized)
		snd_hda_suspend(chip->bus, state);
	azx_stop_chip(chip);
	if (chip->irq >= 0) {
		synchronize_irq(chip->irq);
		free_irq(chip->irq, chip);
		chip->irq = -1;
	}
	if (chip->msi)
		pci_disable_msi(chip->pci);
	pci_disable_device(pci);
	pci_save_state(pci);
	pci_set_power_state(pci, pci_choose_state(pci, state));
	return 0;
}

static int azx_resume(struct pci_dev *pci)
{
	struct snd_card *card = pci_get_drvdata(pci);
	struct azx *chip = card->private_data;

	pci_set_power_state(pci, PCI_D0);
	pci_restore_state(pci);
	if (pci_enable_device(pci) < 0) {
		printk(KERN_ERR "hda-intel: pci_enable_device failed, "
		       "disabling device\n");
		snd_card_disconnect(card);
		return -EIO;
	}
	pci_set_master(pci);
	if (chip->msi)
		if (pci_enable_msi(pci) < 0)
			chip->msi = 0;
	if (azx_acquire_irq(chip, 1) < 0)
		return -EIO;
	azx_init_pci(chip);

	if (snd_hda_codecs_inuse(chip->bus))
		azx_init_chip(chip);

	snd_hda_resume(chip->bus);
	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
	return 0;
}
#endif /* CONFIG_PM */


/*
 * destructor
 */
static int azx_free(struct azx *chip)
{
	if (chip->initialized) {
		int i;
		for (i = 0; i < chip->num_streams; i++)
			azx_stream_stop(chip, &chip->azx_dev[i]);
		azx_stop_chip(chip);
	}

	if (chip->irq >= 0) {
		synchronize_irq(chip->irq);
		free_irq(chip->irq, (void*)chip);
	}
	if (chip->msi)
		pci_disable_msi(chip->pci);
	if (chip->remap_addr)
		iounmap(chip->remap_addr);

	if (chip->bdl.area)
		snd_dma_free_pages(&chip->bdl);
	if (chip->rb.area)
		snd_dma_free_pages(&chip->rb);
	if (chip->posbuf.area)
		snd_dma_free_pages(&chip->posbuf);
	pci_release_regions(chip->pci);
	pci_disable_device(chip->pci);
	kfree(chip->azx_dev);
	kfree(chip);

	return 0;
}

static int azx_dev_free(struct snd_device *device)
{
	return azx_free(device->device_data);
}

/*
 * white/black-listing for position_fix
 */
static struct snd_pci_quirk position_fix_list[] __devinitdata = {
	SND_PCI_QUIRK(0x1028, 0x01cc, "Dell D820", POS_FIX_NONE),
	SND_PCI_QUIRK(0x1028, 0x01de, "Dell Precision 390", POS_FIX_NONE),
	{}
};

static int __devinit check_position_fix(struct azx *chip, int fix)
{
	const struct snd_pci_quirk *q;

	if (fix == POS_FIX_AUTO) {
		q = snd_pci_quirk_lookup(chip->pci, position_fix_list);
		if (q) {
			printk(KERN_INFO
				    "hda_intel: position_fix set to %d "
				    "for device %04x:%04x\n",
				    q->value, q->subvendor, q->subdevice);
			return q->value;
		}
	}
	return fix;
}

/*
 * black-lists for probe_mask
 */
static struct snd_pci_quirk probe_mask_list[] __devinitdata = {
	/* Thinkpad often breaks the controller communication when accessing
	 * to the non-working (or non-existing) modem codec slot.
	 */
	SND_PCI_QUIRK(0x1014, 0x05b7, "Thinkpad Z60", 0x01),
	SND_PCI_QUIRK(0x17aa, 0x2010, "Thinkpad X/T/R60", 0x01),
	SND_PCI_QUIRK(0x17aa, 0x20ac, "Thinkpad X/T/R61", 0x01),
	{}
};

static void __devinit check_probe_mask(struct azx *chip)
{
	const struct snd_pci_quirk *q;

	if (probe_mask == -1) {
		q = snd_pci_quirk_lookup(chip->pci, probe_mask_list);
		if (q) {
			printk(KERN_INFO
			       "hda_intel: probe_mask set to 0x%x "
			       "for device %04x:%04x\n",
			       q->value, q->subvendor, q->subdevice);
			probe_mask = q->value;
		}
	}
}


/*
 * constructor
 */
static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
				int driver_type,
				struct azx **rchip)
{
	struct azx *chip;
	int err;
	static struct snd_device_ops ops = {
		.dev_free = azx_dev_free,
	};

	*rchip = NULL;
	
	err = pci_enable_device(pci);
	if (err < 0)
		return err;

	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
	if (!chip) {
		snd_printk(KERN_ERR SFX "cannot allocate chip\n");
		pci_disable_device(pci);
		return -ENOMEM;
	}

	spin_lock_init(&chip->reg_lock);
	mutex_init(&chip->open_mutex);
	chip->card = card;
	chip->pci = pci;
	chip->irq = -1;
	chip->driver_type = driver_type;
	chip->msi = enable_msi;

	chip->position_fix = check_position_fix(chip, position_fix);
	check_probe_mask(chip);

	chip->single_cmd = single_cmd;

#if BITS_PER_LONG != 64
	/* Fix up base address on ULI M5461 */
	if (chip->driver_type == AZX_DRIVER_ULI) {
		u16 tmp3;
		pci_read_config_word(pci, 0x40, &tmp3);
		pci_write_config_word(pci, 0x40, tmp3 | 0x10);
		pci_write_config_dword(pci, PCI_BASE_ADDRESS_1, 0);
	}
#endif

	err = pci_request_regions(pci, "ICH HD audio");
	if (err < 0) {
		kfree(chip);
		pci_disable_device(pci);
		return err;
	}

	chip->addr = pci_resource_start(pci, 0);
	chip->remap_addr = ioremap_nocache(chip->addr, pci_resource_len(pci,0));
	if (chip->remap_addr == NULL) {
		snd_printk(KERN_ERR SFX "ioremap error\n");
		err = -ENXIO;
		goto errout;
	}

	if (chip->msi)
		if (pci_enable_msi(pci) < 0)
			chip->msi = 0;

	if (azx_acquire_irq(chip, 0) < 0) {
		err = -EBUSY;
		goto errout;
	}

	pci_set_master(pci);
	synchronize_irq(chip->irq);

	switch (chip->driver_type) {
	case AZX_DRIVER_ULI:
		chip->playback_streams = ULI_NUM_PLAYBACK;
		chip->capture_streams = ULI_NUM_CAPTURE;
		chip->playback_index_offset = ULI_PLAYBACK_INDEX;
		chip->capture_index_offset = ULI_CAPTURE_INDEX;
		break;
	case AZX_DRIVER_ATIHDMI:
		chip->playback_streams = ATIHDMI_NUM_PLAYBACK;
		chip->capture_streams = ATIHDMI_NUM_CAPTURE;
		chip->playback_index_offset = ATIHDMI_PLAYBACK_INDEX;
		chip->capture_index_offset = ATIHDMI_CAPTURE_INDEX;
		break;
	default:
		chip->playback_streams = ICH6_NUM_PLAYBACK;
		chip->capture_streams = ICH6_NUM_CAPTURE;
		chip->playback_index_offset = ICH6_PLAYBACK_INDEX;
		chip->capture_index_offset = ICH6_CAPTURE_INDEX;
		break;
	}
	chip->num_streams = chip->playback_streams + chip->capture_streams;
	chip->azx_dev = kcalloc(chip->num_streams, sizeof(*chip->azx_dev),
				GFP_KERNEL);
	if (!chip->azx_dev) {
		snd_printk(KERN_ERR "cannot malloc azx_dev\n");
		goto errout;
	}

	/* allocate memory for the BDL for each stream */
	err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
				  snd_dma_pci_data(chip->pci),
				  BDL_SIZE, &chip->bdl);
	if (err < 0) {
		snd_printk(KERN_ERR SFX "cannot allocate BDL\n");
		goto errout;
	}
	/* allocate memory for the position buffer */
	err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
				  snd_dma_pci_data(chip->pci),
				  chip->num_streams * 8, &chip->posbuf);
	if (err < 0) {
		snd_printk(KERN_ERR SFX "cannot allocate posbuf\n");
		goto errout;
	}
	/* allocate CORB/RIRB */
	if (!chip->single_cmd) {
		err = azx_alloc_cmd_io(chip);
		if (err < 0)
			goto errout;
	}

	/* initialize streams */
	azx_init_stream(chip);

	/* initialize chip */
	azx_init_pci(chip);
	azx_init_chip(chip);

	/* codec detection */
	if (!chip->codec_mask) {
		snd_printk(KERN_ERR SFX "no codecs found!\n");
		err = -ENODEV;
		goto errout;
	}

	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
	if (err <0) {
		snd_printk(KERN_ERR SFX "Error creating device [card]!\n");
		goto errout;
	}

	strcpy(card->driver, "HDA-Intel");
	strcpy(card->shortname, driver_short_names[chip->driver_type]);
	sprintf(card->longname, "%s at 0x%lx irq %i",
		card->shortname, chip->addr, chip->irq);

	*rchip = chip;
	return 0;

 errout:
	azx_free(chip);
	return err;
}

static void power_down_all_codecs(struct azx *chip)
{
#ifdef CONFIG_SND_HDA_POWER_SAVE
	/* The codecs were powered up in snd_hda_codec_new().
	 * Now all initialization done, so turn them down if possible
	 */
	struct hda_codec *codec;
	list_for_each_entry(codec, &chip->bus->codec_list, list) {
		snd_hda_power_down(codec);
	}
#endif
}

static int __devinit azx_probe(struct pci_dev *pci,
			       const struct pci_device_id *pci_id)
{
	struct snd_card *card;
	struct azx *chip;
	int err;

	card = snd_card_new(index, id, THIS_MODULE, 0);
	if (!card) {
		snd_printk(KERN_ERR SFX "Error creating card!\n");
		return -ENOMEM;
	}

	err = azx_create(card, pci, pci_id->driver_data, &chip);
	if (err < 0) {
		snd_card_free(card);
		return err;
	}
	card->private_data = chip;

	/* create codec instances */
	err = azx_codec_create(chip, model);
	if (err < 0) {
		snd_card_free(card);
		return err;
	}

	/* create PCM streams */
	err = azx_pcm_create(chip);
	if (err < 0) {
		snd_card_free(card);
		return err;
	}

	/* create mixer controls */
	err = azx_mixer_create(chip);
	if (err < 0) {
		snd_card_free(card);
		return err;
	}

	snd_card_set_dev(card, &pci->dev);

	err = snd_card_register(card);
	if (err < 0) {
		snd_card_free(card);
		return err;
	}

	pci_set_drvdata(pci, card);
	chip->running = 1;
	power_down_all_codecs(chip);

	return err;
}

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

/* PCI IDs */
static struct pci_device_id azx_ids[] = {
	{ 0x8086, 0x2668, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ICH }, /* ICH6 */
	{ 0x8086, 0x27d8, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ICH }, /* ICH7 */
	{ 0x8086, 0x269a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ICH }, /* ESB2 */
	{ 0x8086, 0x284b, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ICH }, /* ICH8 */
	{ 0x8086, 0x293e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ICH }, /* ICH9 */
	{ 0x8086, 0x293f, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ICH }, /* ICH9 */
	{ 0x1002, 0x437b, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ATI }, /* ATI SB450 */
	{ 0x1002, 0x4383, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ATI }, /* ATI SB600 */
	{ 0x1002, 0x793b, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ATIHDMI }, /* ATI RS600 HDMI */
	{ 0x1002, 0x7919, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ATIHDMI }, /* ATI RS690 HDMI */
	{ 0x1002, 0x960c, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ATIHDMI }, /* ATI RS780 HDMI */
	{ 0x1002, 0xaa00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ATIHDMI }, /* ATI R600 HDMI */
	{ 0x1106, 0x3288, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_VIA }, /* VIA VT8251/VT8237A */
	{ 0x1039, 0x7502, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_SIS }, /* SIS966 */
	{ 0x10b9, 0x5461, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ULI }, /* ULI M5461 */
	{ 0x10de, 0x026c, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP51 */
	{ 0x10de, 0x0371, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP55 */
	{ 0x10de, 0x03e4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP61 */
	{ 0x10de, 0x03f0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP61 */
	{ 0x10de, 0x044a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP65 */
	{ 0x10de, 0x044b, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP65 */
	{ 0x10de, 0x055c, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP67 */
	{ 0x10de, 0x055d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP67 */
	{ 0x10de, 0x07fc, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP73 */
	{ 0x10de, 0x07fd, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP73 */
	{ 0x10de, 0x0774, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP77 */
	{ 0x10de, 0x0775, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP77 */
	{ 0x10de, 0x0776, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP77 */
	{ 0x10de, 0x0777, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP77 */
	{ 0x10de, 0x0ac0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP79 */
	{ 0x10de, 0x0ac1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP79 */
	{ 0x10de, 0x0ac2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP79 */
	{ 0x10de, 0x0ac3, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP79 */
	{ 0, }
};
MODULE_DEVICE_TABLE(pci, azx_ids);

/* pci_driver definition */
static struct pci_driver driver = {
	.name = "HDA Intel",
	.id_table = azx_ids,
	.probe = azx_probe,
	.remove = __devexit_p(azx_remove),
#ifdef CONFIG_PM
	.suspend = azx_suspend,
	.resume = azx_resume,
#endif
};

static int __init alsa_card_azx_init(void)
{
	return pci_register_driver(&driver);
}

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

module_init(alsa_card_azx_init)
module_exit(alsa_card_azx_exit)