/*
* Create an ALSA soundcard entry for the SoundScape, using
* the given list of port, IRQ and DMA resources.
*/
static int __devinit create_sscape(int dev, struct snd_card **rcardp)
{
struct snd_card *card;
register struct soundscape *sscape;
register unsigned dma_cfg;
unsigned irq_cfg;
unsigned mpu_irq_cfg;
unsigned xport;
struct resource *io_res;
unsigned long flags;
int err;
/*
* Check that the user didn't pass us garbage data ...
*/
irq_cfg = get_irq_config(irq[dev]);
if (irq_cfg == INVALID_IRQ) {
snd_printk(KERN_ERR "sscape: Invalid IRQ %d\n", irq[dev]);
return -ENXIO;
}
mpu_irq_cfg = get_irq_config(mpu_irq[dev]);
if (mpu_irq_cfg == INVALID_IRQ) {
printk(KERN_ERR "sscape: Invalid IRQ %d\n", mpu_irq[dev]);
return -ENXIO;
}
xport = port[dev];
/*
* Grab IO ports that we will need to probe so that we
* can detect and control this hardware ...
*/
if ((io_res = request_region(xport, 8, "SoundScape")) == NULL) {
snd_printk(KERN_ERR "sscape: can't grab port 0x%x\n", xport);
return -EBUSY;
}
/*
* Grab both DMA channels (OK, only one for now) ...
*/
if ((err = request_dma(dma[dev], "SoundScape")) < 0) {
snd_printk(KERN_ERR "sscape: can't grab DMA %d\n", dma[dev]);
goto _release_region;
}
/*
* Create a new ALSA sound card entry, in anticipation
* of detecting our hardware ...
*/
if ((card = snd_card_new(index[dev], id[dev], THIS_MODULE,
sizeof(struct soundscape))) == NULL) {
err = -ENOMEM;
goto _release_dma;
}
sscape = get_card_soundscape(card);
spin_lock_init(&sscape->lock);
spin_lock_init(&sscape->fwlock);
sscape->io_res = io_res;
sscape->io_base = xport;
if (!detect_sscape(sscape)) {
printk(KERN_ERR "sscape: hardware not detected at 0x%x\n", sscape->io_base);
err = -ENODEV;
goto _release_card;
}
printk(KERN_INFO "sscape: hardware detected at 0x%x, using IRQ %d, DMA %d\n",
sscape->io_base, irq[dev], dma[dev]);
/*
* Now create the hardware-specific device so that we can
* load the microcode into the on-board processor.
* We cannot use the MPU-401 MIDI system until this firmware
* has been loaded into the card.
*/
if ((err = snd_hwdep_new(card, "MC68EC000", 0, &(sscape->hw))) < 0) {
printk(KERN_ERR "sscape: Failed to create firmware device\n");
goto _release_card;
}
strlcpy(sscape->hw->name, "SoundScape M68K", sizeof(sscape->hw->name));
sscape->hw->name[sizeof(sscape->hw->name) - 1] = '\0';
sscape->hw->iface = SNDRV_HWDEP_IFACE_SSCAPE;
sscape->hw->ops.open = sscape_hw_open;
sscape->hw->ops.release = sscape_hw_release;
sscape->hw->ops.ioctl = sscape_hw_ioctl;
sscape->hw->private_data = sscape;
/*
* Tell the on-board devices where their resources are (I think -
* I can't be sure without a datasheet ... So many magic values!)
*/
spin_lock_irqsave(&sscape->lock, flags);
activate_ad1845_unsafe(sscape->io_base);
sscape_write_unsafe(sscape->io_base, GA_INTENA_REG, 0x00); /* disable */
sscape_write_unsafe(sscape->io_base, GA_SMCFGA_REG, 0x2e);
sscape_write_unsafe(sscape->io_base, GA_SMCFGB_REG, 0x00);
/*
* Enable and configure the DMA channels ...
*/
sscape_write_unsafe(sscape->io_base, GA_DMACFG_REG, 0x50);
dma_cfg = (sscape->ic_type == IC_ODIE ? 0x70 : 0x40);
sscape_write_unsafe(sscape->io_base, GA_DMAA_REG, dma_cfg);
sscape_write_unsafe(sscape->io_base, GA_DMAB_REG, 0x20);
sscape_write_unsafe(sscape->io_base,
GA_INTCFG_REG, 0xf0 | (mpu_irq_cfg << 2) | mpu_irq_cfg);
sscape_write_unsafe(sscape->io_base,
GA_CDCFG_REG, 0x09 | DMA_8BIT | (dma[dev] << 4) | (irq_cfg << 1));
spin_unlock_irqrestore(&sscape->lock, flags);
/*
* We have now enabled the codec chip, and so we should
* detect the AD1845 device ...
*/
if ((err = create_ad1845(card, CODEC_IO(xport), irq[dev], dma[dev])) < 0) {
printk(KERN_ERR "sscape: No AD1845 device at 0x%x, IRQ %d\n",
CODEC_IO(xport), irq[dev]);
goto _release_card;
}
#define MIDI_DEVNUM 0
if ((err = create_mpu401(card, MIDI_DEVNUM, MPU401_IO(xport), mpu_irq[dev])) < 0) {
printk(KERN_ERR "sscape: Failed to create MPU-401 device at 0x%x\n",
MPU401_IO(xport));
goto _release_card;
}
/*
* Enable the master IRQ ...
*/
sscape_write(sscape, GA_INTENA_REG, 0x80);
/*
* Initialize mixer
*/
sscape->midi_vol = 0;
host_write_ctrl_unsafe(sscape->io_base, CMD_SET_MIDI_VOL, 100);
host_write_ctrl_unsafe(sscape->io_base, 0, 100);
host_write_ctrl_unsafe(sscape->io_base, CMD_XXX_MIDI_VOL, 100);
/*
* Now that we have successfully created this sound card,
* it is safe to store the pointer.
* NOTE: we only register the sound card's "destructor"
* function now that our "constructor" has completed.
*/
card->private_free = soundscape_free;
*rcardp = card;
return 0;
_release_card:
snd_card_free(card);
_release_dma:
free_dma(dma[dev]);
_release_region:
release_and_free_resource(io_res);
return err;
}
static int __devinit sscape_pnp_detect(struct pnp_card_link *pcard,
const struct pnp_card_device_id *pid)
{
static int idx = 0;
struct pnp_dev *dev;
struct snd_card *card;
struct soundscape *sscape;
int ret;
/*
* Allow this function to fail *quietly* if all the ISA PnP
* devices were configured using module parameters instead.
*/
if ((idx = get_next_autoindex(idx)) >= SNDRV_CARDS)
return -ENOSPC;
/*
* We have found a candidate ISA PnP card. Now we
* have to check that it has the devices that we
* expect it to have.
*
* We will NOT try and autoconfigure all of the resources
* needed and then activate the card as we are assuming that
* has already been done at boot-time using /proc/isapnp.
* We shall simply try to give each active card the resources
* that it wants. This is a sensible strategy for a modular
* system where unused modules are unloaded regularly.
*
* This strategy is utterly useless if we compile the driver
* into the kernel, of course.
*/
// printk(KERN_INFO "sscape: %s\n", card->name);
/*
* Check that we still have room for another sound card ...
*/
dev = pnp_request_card_device(pcard, pid->devs[0].id, NULL);
if (! dev)
return -ENODEV;
if (!pnp_is_active(dev)) {
if (pnp_activate_dev(dev) < 0) {
printk(KERN_INFO "sscape: device is inactive\n");
return -EBUSY;
}
}
/*
* Create a new ALSA sound card entry, in anticipation
* of detecting our hardware ...
*/
card = snd_card_new(index[idx], id[idx], THIS_MODULE,
sizeof(struct soundscape));
if (!card)
return -ENOMEM;
sscape = get_card_soundscape(card);
/*
* Identify card model ...
*/
if (!strncmp("ENS4081", pid->id, 7))
sscape->type = SSCAPE_VIVO;
else
sscape->type = SSCAPE_PNP;
/*
* Read the correct parameters off the ISA PnP bus ...
*/
port[idx] = pnp_port_start(dev, 0);
irq[idx] = pnp_irq(dev, 0);
mpu_irq[idx] = pnp_irq(dev, 1);
dma[idx] = pnp_dma(dev, 0) & 0x03;
if (sscape->type == SSCAPE_PNP) {
dma2[idx] = dma[idx];
wss_port[idx] = CODEC_IO(port[idx]);
} else {
wss_port[idx] = pnp_port_start(dev, 1);
dma2[idx] = pnp_dma(dev, 1);
}
ret = create_sscape(idx, card);
if (ret < 0)
goto _release_card;
snd_card_set_dev(card, &pcard->card->dev);
if ((ret = snd_card_register(card)) < 0) {
printk(KERN_ERR "sscape: Failed to register sound card\n");
goto _release_card;
}
pnp_set_card_drvdata(pcard, card);
++idx;
return 0;
_release_card:
snd_card_free(card);
return ret;
}
