static int sscape_midi_put(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *uctl) { struct snd_wss *chip = snd_kcontrol_chip(kctl); struct snd_card *card = chip->card; register struct soundscape *s = get_card_soundscape(card); unsigned long flags; int change; spin_lock_irqsave(&s->lock, flags); /* * We need to put the board into HOST mode before we * can send any volume-changing HOST commands ... */ set_host_mode_unsafe(s->io_base); /* * To successfully change the MIDI volume setting, you seem to * have to write a volume command, write the new volume value, * and then perform another volume-related command. Perhaps the * first command is an "open" and the second command is a "close"? */ if (s->midi_vol == ((unsigned char) uctl->value.integer. value[0] & 127)) { change = 0; goto __skip_change; } change = (host_write_ctrl_unsafe(s->io_base, CMD_SET_MIDI_VOL, 100) && host_write_ctrl_unsafe(s->io_base, ((unsigned char) uctl->value.integer. value[0]) & 127, 100) && host_write_ctrl_unsafe(s->io_base, CMD_XXX_MIDI_VOL, 100)); s->midi_vol = (unsigned char) uctl->value.integer.value[0] & 127; __skip_change: /* * Take the board out of HOST mode and back into MIDI mode ... */ set_midi_mode_unsafe(s->io_base); spin_unlock_irqrestore(&s->lock, flags); return change; }
static int sscape_midi_get(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *uctl) { struct snd_cs4231 *chip = snd_kcontrol_chip(kctl); struct snd_card *card = chip->card; register struct soundscape *s = get_card_soundscape(card); unsigned long flags; spin_lock_irqsave(&s->lock, flags); set_host_mode_unsafe(s->io_base); if (host_write_ctrl_unsafe(s->io_base, CMD_GET_MIDI_VOL, 100)) { uctl->value.integer.value[0] = host_read_ctrl_unsafe(s->io_base, 100); } set_midi_mode_unsafe(s->io_base); spin_unlock_irqrestore(&s->lock, flags); return 0; }
/* * 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; }