text: /*
   *  Driver for SoundBlaster 1.0/2.0/Pro soundcards and compatible
   *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
   *
   *
   *   This program is free software; you can redistribute it and/or modify
   *   it under the terms of the GNU General Public License as published by
   *   the Free Software Foundation; either version 2 of the License, or
   *   (at your option) any later version.
   *
   *   This program is distributed in the hope that it will be useful,
   *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *   GNU General Public License for more details.
   *
   *   You should have received a copy of the GNU General Public License
   *   along with this program; if not, write to the Free Software
   *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
   *
   */
  
  #include <linux/init.h>
  #include <linux/err.h>
  #include <linux/isa.h>
  #include <linux/ioport.h>
  #include <linux/module.h>
  #include <sound/core.h>
  #include <sound/sb.h>
  #include <sound/opl3.h>
  #include <sound/initval.h>
  
  MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  MODULE_DESCRIPTION("Sound Blaster 1.0/2.0/Pro");
  MODULE_LICENSE("GPL");
  MODULE_SUPPORTED_DEVICE("{{Creative Labs,SB 1.0/SB 2.0/SB Pro}}");
  
  static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
  static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
  static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;	/* Enable this card */
  static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;	/* 0x220,0x240,0x260 */
  static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;	/* 5,7,9,10 */
  static int dma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	/* 1,3 */
  
  module_param_array(index, int, NULL, 0444);
  MODULE_PARM_DESC(index, "Index value for Sound Blaster soundcard.");
  module_param_array(id, charp, NULL, 0444);
  MODULE_PARM_DESC(id, "ID string for Sound Blaster soundcard.");
  module_param_array(enable, bool, NULL, 0444);
  MODULE_PARM_DESC(enable, "Enable Sound Blaster soundcard.");
  module_param_array(port, long, NULL, 0444);
  MODULE_PARM_DESC(port, "Port # for SB8 driver.");
  module_param_array(irq, int, NULL, 0444);
  MODULE_PARM_DESC(irq, "IRQ # for SB8 driver.");
  module_param_array(dma8, int, NULL, 0444);
  MODULE_PARM_DESC(dma8, "8-bit DMA # for SB8 driver.");
  
  struct snd_sb8 {
  	struct resource *fm_res;	/* used to block FM i/o region for legacy cards */
  	struct snd_sb *chip;
  };
  
  static irqreturn_t snd_sb8_interrupt(int irq, void *dev_id)
  {
  	struct snd_sb *chip = dev_id;
  
  	if (chip->open & SB_OPEN_PCM) {
  		return snd_sb8dsp_interrupt(chip);
  	} else {
  		return snd_sb8dsp_midi_interrupt(chip);
  	}
  }
  
  static void snd_sb8_free(struct snd_card *card)
  {
  	struct snd_sb8 *acard = card->private_data;
  
  	if (acard == NULL)
  		return;
  	release_and_free_resource(acard->fm_res);
  }
  
  static int snd_sb8_match(struct device *pdev, unsigned int dev)
  {
  	if (!enable[dev])
  		return 0;
  	if (irq[dev] == SNDRV_AUTO_IRQ) {
  		dev_err(pdev, "please specify irq\n");
  		return 0;
  	}
  	if (dma8[dev] == SNDRV_AUTO_DMA) {
  		dev_err(pdev, "please specify dma8\n");
  		return 0;
  	}
  	return 1;
  }
  
  static int snd_sb8_probe(struct device *pdev, unsigned int dev)
  {
  	struct snd_sb *chip;
  	struct snd_card *card;
  	struct snd_sb8 *acard;
  	struct snd_opl3 *opl3;
  	int err;
  
  	err = snd_card_create(index[dev], id[dev], THIS_MODULE,
  			      sizeof(struct snd_sb8), &card);
  	if (err < 0)
  		return err;
  	acard = card->private_data;
  	card->private_free = snd_sb8_free;
  
  	/* block the 0x388 port to avoid PnP conflicts */
  	acard->fm_res = request_region(0x388, 4, "SoundBlaster FM");
  
  	if (port[dev] != SNDRV_AUTO_PORT) {
  		if ((err = snd_sbdsp_create(card, port[dev], irq[dev],
  					    snd_sb8_interrupt,
  					    dma8[dev],
  					    -1,
  					    SB_HW_AUTO,
  					    &chip)) < 0)
  			goto _err;
  	} else {
  		/* auto-probe legacy ports */
  		static unsigned long possible_ports[] = {
  			0x220, 0x240, 0x260,
  		};
  		int i;
  		for (i = 0; i < ARRAY_SIZE(possible_ports); i++) {
  			err = snd_sbdsp_create(card, possible_ports[i],
  					       irq[dev],
  					       snd_sb8_interrupt,
  					       dma8[dev],
  					       -1,
  					       SB_HW_AUTO,
  					       &chip);
  			if (err >= 0) {
  				port[dev] = possible_ports[i];
  				break;
  			}
  		}
  		if (i >= ARRAY_SIZE(possible_ports)) {
  			err = -EINVAL;
  			goto _err;
  		}
  	}
  	acard->chip = chip;
  			
  	if (chip->hardware >= SB_HW_16) {
  		if (chip->hardware == SB_HW_ALS100)
  			snd_printk(KERN_WARNING "ALS100 chip detected at 0x%lx, try snd-als100 module\n",
  				    port[dev]);
  		else
  			snd_printk(KERN_WARNING "SB 16 chip detected at 0x%lx, try snd-sb16 module\n",
  				   port[dev]);
  		err = -ENODEV;
  		goto _err;
  	}
  
  	if ((err = snd_sb8dsp_pcm(chip, 0, NULL)) < 0)
  		goto _err;
  
  	if ((err = snd_sbmixer_new(chip)) < 0)
  		goto _err;
  
  	if (chip->hardware == SB_HW_10 || chip->hardware == SB_HW_20) {
  		if ((err = snd_opl3_create(card, chip->port + 8, 0,
  					   OPL3_HW_AUTO, 1,
  					   &opl3)) < 0) {
  			snd_printk(KERN_WARNING "sb8: no OPL device at 0x%lx\n", chip->port + 8);
  		}
  	} else {
  		if ((err = snd_opl3_create(card, chip->port, chip->port + 2,
  					   OPL3_HW_AUTO, 1,
  					   &opl3)) < 0) {
  			snd_printk(KERN_WARNING "sb8: no OPL device at 0x%lx-0x%lx\n",
  				   chip->port, chip->port + 2);
  		}
  	}
  	if (err >= 0) {
  		if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0)
  			goto _err;
  	}
  
  	if ((err = snd_sb8dsp_midi(chip, 0, NULL)) < 0)
  		goto _err;
  
  	strcpy(card->driver, chip->hardware == SB_HW_PRO ? "SB Pro" : "SB8");
  	strcpy(card->shortname, chip->name);
  	sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
  		chip->name,
  		chip->port,
  		irq[dev], dma8[dev]);
  
  	snd_card_set_dev(card, pdev);
  
  	if ((err = snd_card_register(card)) < 0)
  		goto _err;
  
  	dev_set_drvdata(pdev, card);
  	return 0;
  
   _err:
  	snd_card_free(card);
  	return err;
  }
  
  static int snd_sb8_remove(struct device *pdev, unsigned int dev)
  {
  	snd_card_free(dev_get_drvdata(pdev));
  	return 0;
  }
  
  #ifdef CONFIG_PM
  static int snd_sb8_suspend(struct device *dev, unsigned int n,
  			   pm_message_t state)
  {
  	struct snd_card *card = dev_get_drvdata(dev);
  	struct snd_sb8 *acard = card->private_data;
  	struct snd_sb *chip = acard->chip;
  
  	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
  	snd_pcm_suspend_all(chip->pcm);
  	snd_sbmixer_suspend(chip);
  	return 0;
  }
  
  static int snd_sb8_resume(struct device *dev, unsigned int n)
  {
  	struct snd_card *card = dev_get_drvdata(dev);
  	struct snd_sb8 *acard = card->private_data;
  	struct snd_sb *chip = acard->chip;
  
  	snd_sbdsp_reset(chip);
  	snd_sbmixer_resume(chip);
  	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
  	return 0;
  }
  #endif
  
  #define DEV_NAME "sb8"
  
  static struct isa_driver snd_sb8_driver = {
  	.match		= snd_sb8_match,
  	.probe		= snd_sb8_probe,
  	.remove		= snd_sb8_remove,
  #ifdef CONFIG_PM
  	.suspend	= snd_sb8_suspend,
  	.resume		= snd_sb8_resume,
  #endif
  	.driver		= {
  		.name	= DEV_NAME 
  	},
  };
  
  static int __init alsa_card_sb8_init(void)
  {
  	return isa_register_driver(&snd_sb8_driver, SNDRV_CARDS);
  }
  
  static void __exit alsa_card_sb8_exit(void)
  {
  	isa_unregister_driver(&snd_sb8_driver);
  }
  
  module_init(alsa_card_sb8_init)
  module_exit(alsa_card_sb8_exit)
  