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sb16.c

/*
 *  Driver for SoundBlaster 16/AWE32/AWE64 soundcards
 *  Copyright (c) by Jaroslav Kysela <perex@suse.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 <sound/driver.h>
#include <asm/dma.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/pnp.h>
#include <linux/err.h>
#include <linux/isa.h>
#include <linux/moduleparam.h>
#include <sound/core.h>
#include <sound/sb.h>
#include <sound/sb16_csp.h>
#include <sound/mpu401.h>
#include <sound/opl3.h>
#include <sound/emu8000.h>
#include <sound/seq_device.h>
#define SNDRV_LEGACY_FIND_FREE_IRQ
#define SNDRV_LEGACY_FIND_FREE_DMA
#include <sound/initval.h>

#ifdef SNDRV_SBAWE
#define PFX "sbawe: "
#else
#define PFX "sb16: "
#endif

MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
MODULE_LICENSE("GPL");
#ifndef SNDRV_SBAWE
MODULE_DESCRIPTION("Sound Blaster 16");
MODULE_SUPPORTED_DEVICE("{{Creative Labs,SB 16},"
            "{Creative Labs,SB Vibra16S},"
            "{Creative Labs,SB Vibra16C},"
            "{Creative Labs,SB Vibra16CL},"
            "{Creative Labs,SB Vibra16X}}");
#else
MODULE_DESCRIPTION("Sound Blaster AWE");
MODULE_SUPPORTED_DEVICE("{{Creative Labs,SB AWE 32},"
            "{Creative Labs,SB AWE 64},"
            "{Creative Labs,SB AWE 64 Gold}}");
#endif

#if 0
#define SNDRV_DEBUG_IRQ
#endif

#if defined(SNDRV_SBAWE) && (defined(CONFIG_SND_SEQUENCER) || (defined(MODULE) && defined(CONFIG_SND_SEQUENCER_MODULE)))
#define SNDRV_SBAWE_EMU8000
#endif

static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;    /* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;     /* ID for this card */
static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_ISAPNP; /* Enable this card */
#ifdef CONFIG_PNP
static int isapnp[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
#endif
static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;   /* 0x220,0x240,0x260,0x280 */
static long mpu_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;     /* 0x330,0x300 */
static long fm_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
#ifdef SNDRV_SBAWE_EMU8000
static long awe_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
#endif
static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;      /* 5,7,9,10 */
static int dma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;     /* 0,1,3 */
static int dma16[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;    /* 5,6,7 */
static int mic_agc[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
#ifdef CONFIG_SND_SB16_CSP
static int csp[SNDRV_CARDS];
#endif
#ifdef SNDRV_SBAWE_EMU8000
static int seq_ports[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 4};
#endif

module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for SoundBlaster 16 soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for SoundBlaster 16 soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable SoundBlaster 16 soundcard.");
#ifdef CONFIG_PNP
module_param_array(isapnp, bool, NULL, 0444);
MODULE_PARM_DESC(isapnp, "PnP detection for specified soundcard.");
#endif
module_param_array(port, long, NULL, 0444);
MODULE_PARM_DESC(port, "Port # for SB16 driver.");
module_param_array(mpu_port, long, NULL, 0444);
MODULE_PARM_DESC(mpu_port, "MPU-401 port # for SB16 driver.");
module_param_array(fm_port, long, NULL, 0444);
MODULE_PARM_DESC(fm_port, "FM port # for SB16 PnP driver.");
#ifdef SNDRV_SBAWE_EMU8000
module_param_array(awe_port, long, NULL, 0444);
MODULE_PARM_DESC(awe_port, "AWE port # for SB16 PnP driver.");
#endif
module_param_array(irq, int, NULL, 0444);
MODULE_PARM_DESC(irq, "IRQ # for SB16 driver.");
module_param_array(dma8, int, NULL, 0444);
MODULE_PARM_DESC(dma8, "8-bit DMA # for SB16 driver.");
module_param_array(dma16, int, NULL, 0444);
MODULE_PARM_DESC(dma16, "16-bit DMA # for SB16 driver.");
module_param_array(mic_agc, int, NULL, 0444);
MODULE_PARM_DESC(mic_agc, "Mic Auto-Gain-Control switch.");
#ifdef CONFIG_SND_SB16_CSP
module_param_array(csp, int, NULL, 0444);
MODULE_PARM_DESC(csp, "ASP/CSP chip support.");
#endif
#ifdef SNDRV_SBAWE_EMU8000
module_param_array(seq_ports, int, NULL, 0444);
MODULE_PARM_DESC(seq_ports, "Number of sequencer ports for WaveTable synth.");
#endif

#ifdef CONFIG_PNP
static int isa_registered;
static int pnp_registered;
#endif

struct snd_card_sb16 {
      struct resource *fm_res;      /* used to block FM i/o region for legacy cards */
      struct snd_sb *chip;
#ifdef CONFIG_PNP
      int dev_no;
      struct pnp_dev *dev;
#ifdef SNDRV_SBAWE_EMU8000
      struct pnp_dev *devwt;
#endif
#endif
};

#ifdef CONFIG_PNP

static struct pnp_card_device_id snd_sb16_pnpids[] = {
#ifndef SNDRV_SBAWE
      /* Sound Blaster 16 PnP */
      { .id = "CTL0024", .devs = { { "CTL0031" } } },
      /* Sound Blaster 16 PnP */
      { .id = "CTL0025", .devs = { { "CTL0031" } } },
      /* Sound Blaster 16 PnP */
      { .id = "CTL0026", .devs = { { "CTL0031" } } },
      /* Sound Blaster 16 PnP */
      { .id = "CTL0027", .devs = { { "CTL0031" } } },
      /* Sound Blaster 16 PnP */
      { .id = "CTL0028", .devs = { { "CTL0031" } } },
      /* Sound Blaster 16 PnP */
      { .id = "CTL0029", .devs = { { "CTL0031" } } },
      /* Sound Blaster 16 PnP */
      { .id = "CTL002a", .devs = { { "CTL0031" } } },
      /* Sound Blaster 16 PnP */
      /* Note: This card has also a CTL0051:StereoEnhance device!!! */
      { .id = "CTL002b", .devs = { { "CTL0031" } } },
      /* Sound Blaster 16 PnP */
      { .id = "CTL002c", .devs = { { "CTL0031" } } },
      /* Sound Blaster Vibra16S */
      { .id = "CTL0051", .devs = { { "CTL0001" } } },
      /* Sound Blaster Vibra16C */
      { .id = "CTL0070", .devs = { { "CTL0001" } } },
      /* Sound Blaster Vibra16CL - added by ctm@ardi.com */
      { .id = "CTL0080", .devs = { { "CTL0041" } } },
      /* Sound Blaster 16 'value' PnP. It says model ct4130 on the pcb, */
      /* but ct4131 on a sticker on the board.. */
      { .id = "CTL0086", .devs = { { "CTL0041" } } },
      /* Sound Blaster Vibra16X */
      { .id = "CTL00f0", .devs = { { "CTL0043" } } },
      /* Sound Blaster 16 (Virtual PC 2004) */
      { .id = "tBA03b0", .devs = { {.id="PNPb003" } } },
#else  /* SNDRV_SBAWE defined */
      /* Sound Blaster AWE 32 PnP */
      { .id = "CTL0035", .devs = { { "CTL0031" }, { "CTL0021" } } },
      /* Sound Blaster AWE 32 PnP */
      { .id = "CTL0039", .devs = { { "CTL0031" }, { "CTL0021" } } },
      /* Sound Blaster AWE 32 PnP */
      { .id = "CTL0042", .devs = { { "CTL0031" }, { "CTL0021" } } },
      /* Sound Blaster AWE 32 PnP */
      { .id = "CTL0043", .devs = { { "CTL0031" }, { "CTL0021" } } },
      /* Sound Blaster AWE 32 PnP */
      /* Note: This card has also a CTL0051:StereoEnhance device!!! */
      { .id = "CTL0044", .devs = { { "CTL0031" }, { "CTL0021" } } },
      /* Sound Blaster AWE 32 PnP */
      /* Note: This card has also a CTL0051:StereoEnhance device!!! */
      { .id = "CTL0045", .devs = { { "CTL0031" }, { "CTL0021" } } },
      /* Sound Blaster AWE 32 PnP */
      { .id = "CTL0046", .devs = { { "CTL0031" }, { "CTL0021" } } },
      /* Sound Blaster AWE 32 PnP */
      { .id = "CTL0047", .devs = { { "CTL0031" }, { "CTL0021" } } },
      /* Sound Blaster AWE 32 PnP */
      { .id = "CTL0048", .devs = { { "CTL0031" }, { "CTL0021" } } },
      /* Sound Blaster AWE 32 PnP */
      { .id = "CTL0054", .devs = { { "CTL0031" }, { "CTL0021" } } },
      /* Sound Blaster AWE 32 PnP */
      { .id = "CTL009a", .devs = { { "CTL0041" }, { "CTL0021" } } },
      /* Sound Blaster AWE 32 PnP */
      { .id = "CTL009c", .devs = { { "CTL0041" }, { "CTL0021" } } },
      /* Sound Blaster 32 PnP */
      { .id = "CTL009f", .devs = { { "CTL0041" }, { "CTL0021" } } },
      /* Sound Blaster AWE 64 PnP */
      { .id = "CTL009d", .devs = { { "CTL0042" }, { "CTL0022" } } },
      /* Sound Blaster AWE 64 PnP Gold */
      { .id = "CTL009e", .devs = { { "CTL0044" }, { "CTL0023" } } },
      /* Sound Blaster AWE 64 PnP Gold */
      { .id = "CTL00b2", .devs = { { "CTL0044" }, { "CTL0023" } } },
      /* Sound Blaster AWE 64 PnP */
      { .id = "CTL00c1", .devs = { { "CTL0042" }, { "CTL0022" } } },
      /* Sound Blaster AWE 64 PnP */
      { .id = "CTL00c3", .devs = { { "CTL0045" }, { "CTL0022" } } },
      /* Sound Blaster AWE 64 PnP */
      { .id = "CTL00c5", .devs = { { "CTL0045" }, { "CTL0022" } } },
      /* Sound Blaster AWE 64 PnP */
      { .id = "CTL00c7", .devs = { { "CTL0045" }, { "CTL0022" } } },
      /* Sound Blaster AWE 64 PnP */
      { .id = "CTL00e4", .devs = { { "CTL0045" }, { "CTL0022" } } },
      /* Sound Blaster AWE 64 PnP */
      { .id = "CTL00e9", .devs = { { "CTL0045" }, { "CTL0022" } } },
      /* Sound Blaster 16 PnP (AWE) */
      { .id = "CTL00ed", .devs = { { "CTL0041" }, { "CTL0070" } } },
      /* Generic entries */
      { .id = "CTLXXXX" , .devs = { { "CTL0031" }, { "CTL0021" } } },
      { .id = "CTLXXXX" , .devs = { { "CTL0041" }, { "CTL0021" } } },
      { .id = "CTLXXXX" , .devs = { { "CTL0042" }, { "CTL0022" } } },
      { .id = "CTLXXXX" , .devs = { { "CTL0044" }, { "CTL0023" } } },
      { .id = "CTLXXXX" , .devs = { { "CTL0045" }, { "CTL0022" } } },
#endif /* SNDRV_SBAWE */
      { .id = "", }
};

MODULE_DEVICE_TABLE(pnp_card, snd_sb16_pnpids);

#endif /* CONFIG_PNP */

#ifdef SNDRV_SBAWE_EMU8000
#define DRIVER_NAME     "snd-card-sbawe"
#else
#define DRIVER_NAME     "snd-card-sb16"
#endif

#ifdef CONFIG_PNP

static int __devinit snd_card_sb16_pnp(int dev, struct snd_card_sb16 *acard,
                               struct pnp_card_link *card,
                               const struct pnp_card_device_id *id)
{
      struct pnp_dev *pdev;
      struct pnp_resource_table * cfg = kmalloc(sizeof(struct pnp_resource_table), GFP_KERNEL);
      int err;

      if (!cfg) 
            return -ENOMEM; 
      acard->dev = pnp_request_card_device(card, id->devs[0].id, NULL);
      if (acard->dev == NULL) { 
            kfree(cfg); 
            return -ENODEV; 
      } 
#ifdef SNDRV_SBAWE_EMU8000
      acard->devwt = pnp_request_card_device(card, id->devs[1].id, acard->dev);
#endif
      /* Audio initialization */
      pdev = acard->dev;

      pnp_init_resource_table(cfg); 
       
      /* override resources */ 

      if (port[dev] != SNDRV_AUTO_PORT)
            pnp_resource_change(&cfg->port_resource[0], port[dev], 16);
      if (mpu_port[dev] != SNDRV_AUTO_PORT)
            pnp_resource_change(&cfg->port_resource[1], mpu_port[dev], 2);
      if (fm_port[dev] != SNDRV_AUTO_PORT)
            pnp_resource_change(&cfg->port_resource[2], fm_port[dev], 4);
      if (dma8[dev] != SNDRV_AUTO_DMA)
            pnp_resource_change(&cfg->dma_resource[0], dma8[dev], 1);
      if (dma16[dev] != SNDRV_AUTO_DMA)
            pnp_resource_change(&cfg->dma_resource[1], dma16[dev], 1);
      if (irq[dev] != SNDRV_AUTO_IRQ)
            pnp_resource_change(&cfg->irq_resource[0], irq[dev], 1);
      if (pnp_manual_config_dev(pdev, cfg, 0) < 0) 
            snd_printk(KERN_ERR PFX "AUDIO the requested resources are invalid, using auto config\n"); 
      err = pnp_activate_dev(pdev); 
      if (err < 0) { 
            snd_printk(KERN_ERR PFX "AUDIO pnp configure failure\n"); 
            kfree(cfg);
            return err; 
      } 
      port[dev] = pnp_port_start(pdev, 0);
      mpu_port[dev] = pnp_port_start(pdev, 1);
      fm_port[dev] = pnp_port_start(pdev, 2);
      dma8[dev] = pnp_dma(pdev, 0);
      dma16[dev] = pnp_dma(pdev, 1);
      irq[dev] = pnp_irq(pdev, 0);
      snd_printdd("pnp SB16: port=0x%lx, mpu port=0x%lx, fm port=0x%lx\n",
                  port[dev], mpu_port[dev], fm_port[dev]);
      snd_printdd("pnp SB16: dma1=%i, dma2=%i, irq=%i\n",
                  dma8[dev], dma16[dev], irq[dev]);
#ifdef SNDRV_SBAWE_EMU8000
      /* WaveTable initialization */
      pdev = acard->devwt;
      if (pdev != NULL) {
            pnp_init_resource_table(cfg); 
       
            /* override resources */ 

            if (awe_port[dev] != SNDRV_AUTO_PORT) {
                  pnp_resource_change(&cfg->port_resource[0], awe_port[dev], 4);
                  pnp_resource_change(&cfg->port_resource[1], awe_port[dev] + 0x400, 4);
                  pnp_resource_change(&cfg->port_resource[2], awe_port[dev] + 0x800, 4);
            }
            if ((pnp_manual_config_dev(pdev, cfg, 0)) < 0) 
                  snd_printk(KERN_ERR PFX "WaveTable the requested resources are invalid, using auto config\n"); 
            err = pnp_activate_dev(pdev); 
            if (err < 0) { 
                  goto __wt_error; 
            } 
            awe_port[dev] = pnp_port_start(pdev, 0);
            snd_printdd("pnp SB16: wavetable port=0x%llx\n",
                        (unsigned long long)pnp_port_start(pdev, 0));
      } else {
__wt_error:
            if (pdev) {
                  pnp_release_card_device(pdev);
                  snd_printk(KERN_ERR PFX "WaveTable pnp configure failure\n");
            }
            acard->devwt = NULL;
            awe_port[dev] = -1;
      }
#endif
      kfree(cfg);
      return 0;
}

#endif /* CONFIG_PNP */

static void snd_sb16_free(struct snd_card *card)
{
      struct snd_card_sb16 *acard = card->private_data;
        
      if (acard == NULL)
            return;
      release_and_free_resource(acard->fm_res);
}

#ifdef CONFIG_PNP
#define is_isapnp_selected(dev)           isapnp[dev]
#else
#define is_isapnp_selected(dev)           0
#endif

static struct snd_card *snd_sb16_card_new(int dev)
{
      struct snd_card *card = snd_card_new(index[dev], id[dev], THIS_MODULE,
                              sizeof(struct snd_card_sb16));
      if (card == NULL)
            return NULL;
      card->private_free = snd_sb16_free;
      return card;
}

static int __devinit snd_sb16_probe(struct snd_card *card, int dev)
{
      int xirq, xdma8, xdma16;
      struct snd_sb *chip;
      struct snd_card_sb16 *acard = card->private_data;
      struct snd_opl3 *opl3;
      struct snd_hwdep *synth = NULL;
#ifdef CONFIG_SND_SB16_CSP
      struct snd_hwdep *xcsp = NULL;
#endif
      unsigned long flags;
      int err;

      xirq = irq[dev];
      xdma8 = dma8[dev];
      xdma16 = dma16[dev];

      if ((err = snd_sbdsp_create(card,
                            port[dev],
                            xirq,
                            snd_sb16dsp_interrupt,
                            xdma8,
                            xdma16,
                            SB_HW_AUTO,
                            &chip)) < 0)
            return err;

      acard->chip = chip;
      if (chip->hardware != SB_HW_16) {
            snd_printk(KERN_ERR PFX "SB 16 chip was not detected at 0x%lx\n", port[dev]);
            return -ENODEV;
      }
      chip->mpu_port = mpu_port[dev];
      if (! is_isapnp_selected(dev) && (err = snd_sb16dsp_configure(chip)) < 0)
            return err;

      if ((err = snd_sb16dsp_pcm(chip, 0, &chip->pcm)) < 0)
            return err;

      strcpy(card->driver,
#ifdef SNDRV_SBAWE_EMU8000
                  awe_port[dev] > 0 ? "SB AWE" :
#endif
                  "SB16");
      strcpy(card->shortname, chip->name);
      sprintf(card->longname, "%s at 0x%lx, irq %i, dma ",
            chip->name,
            chip->port,
            xirq);
      if (xdma8 >= 0)
            sprintf(card->longname + strlen(card->longname), "%d", xdma8);
      if (xdma16 >= 0)
            sprintf(card->longname + strlen(card->longname), "%s%d",
                  xdma8 >= 0 ? "&" : "", xdma16);

      if (chip->mpu_port > 0 && chip->mpu_port != SNDRV_AUTO_PORT) {
            if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_SB,
                                     chip->mpu_port, 0,
                                     xirq, 0, &chip->rmidi)) < 0)
                  return err;
            chip->rmidi_callback = snd_mpu401_uart_interrupt;
      }

#ifdef SNDRV_SBAWE_EMU8000
      if (awe_port[dev] == SNDRV_AUTO_PORT)
            awe_port[dev] = 0; /* disable */
#endif

      if (fm_port[dev] > 0 && fm_port[dev] != SNDRV_AUTO_PORT) {
            if (snd_opl3_create(card, fm_port[dev], fm_port[dev] + 2,
                            OPL3_HW_OPL3,
                            acard->fm_res != NULL || fm_port[dev] == port[dev],
                            &opl3) < 0) {
                  snd_printk(KERN_ERR PFX "no OPL device at 0x%lx-0x%lx\n",
                           fm_port[dev], fm_port[dev] + 2);
            } else {
#ifdef SNDRV_SBAWE_EMU8000
                  int seqdev = awe_port[dev] > 0 ? 2 : 1;
#else
                  int seqdev = 1;
#endif
                  if ((err = snd_opl3_hwdep_new(opl3, 0, seqdev, &synth)) < 0)
                        return err;
            }
      }

      if ((err = snd_sbmixer_new(chip)) < 0)
            return err;

#ifdef CONFIG_SND_SB16_CSP
      /* CSP chip on SB16ASP/AWE32 */
      if ((chip->hardware == SB_HW_16) && csp[dev]) {
            snd_sb_csp_new(chip, synth != NULL ? 1 : 0, &xcsp);
            if (xcsp) {
                  chip->csp = xcsp->private_data;
                  chip->hardware = SB_HW_16CSP;
            } else {
                  snd_printk(KERN_INFO PFX "warning - CSP chip not detected on soundcard #%i\n", dev + 1);
            }
      }
#endif
#ifdef SNDRV_SBAWE_EMU8000
      if (awe_port[dev] > 0) {
            if ((err = snd_emu8000_new(card, 1, awe_port[dev],
                                 seq_ports[dev], NULL)) < 0) {
                  snd_printk(KERN_ERR PFX "fatal error - EMU-8000 synthesizer not detected at 0x%lx\n", awe_port[dev]);

                  return err;
            }
      }
#endif

      /* setup Mic AGC */
      spin_lock_irqsave(&chip->mixer_lock, flags);
      snd_sbmixer_write(chip, SB_DSP4_MIC_AGC,
            (snd_sbmixer_read(chip, SB_DSP4_MIC_AGC) & 0x01) |
            (mic_agc[dev] ? 0x00 : 0x01));
      spin_unlock_irqrestore(&chip->mixer_lock, flags);

      if ((err = snd_card_register(card)) < 0)
            return err;

      return 0;
}

#ifdef CONFIG_PM
static int snd_sb16_suspend(struct snd_card *card, pm_message_t state)
{
      struct snd_card_sb16 *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_sb16_resume(struct snd_card *card)
{
      struct snd_card_sb16 *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

static int __devinit snd_sb16_isa_probe1(int dev, struct device *pdev)
{
      struct snd_card_sb16 *acard;
      struct snd_card *card;
      int err;

      card = snd_sb16_card_new(dev);
      if (! card)
            return -ENOMEM;

      acard = card->private_data;
      /* non-PnP FM port address is hardwired with base port address */
      fm_port[dev] = port[dev];
      /* block the 0x388 port to avoid PnP conflicts */
      acard->fm_res = request_region(0x388, 4, "SoundBlaster FM");
#ifdef SNDRV_SBAWE_EMU8000
      /* non-PnP AWE port address is hardwired with base port address */
      awe_port[dev] = port[dev] + 0x400;
#endif

      snd_card_set_dev(card, pdev);
      if ((err = snd_sb16_probe(card, dev)) < 0) {
            snd_card_free(card);
            return err;
      }
      dev_set_drvdata(pdev, card);
      return 0;
}


static int __devinit snd_sb16_isa_match(struct device *pdev, unsigned int dev)
{
      return enable[dev] && !is_isapnp_selected(dev);
}

static int __devinit snd_sb16_isa_probe(struct device *pdev, unsigned int dev)
{
      int err;
      static int possible_irqs[] = {5, 9, 10, 7, -1};
      static int possible_dmas8[] = {1, 3, 0, -1};
      static int possible_dmas16[] = {5, 6, 7, -1};

      if (irq[dev] == SNDRV_AUTO_IRQ) {
            if ((irq[dev] = snd_legacy_find_free_irq(possible_irqs)) < 0) {
                  snd_printk(KERN_ERR PFX "unable to find a free IRQ\n");
                  return -EBUSY;
            }
      }
      if (dma8[dev] == SNDRV_AUTO_DMA) {
            if ((dma8[dev] = snd_legacy_find_free_dma(possible_dmas8)) < 0) {
                  snd_printk(KERN_ERR PFX "unable to find a free 8-bit DMA\n");
                  return -EBUSY;
            }
      }
      if (dma16[dev] == SNDRV_AUTO_DMA) {
            if ((dma16[dev] = snd_legacy_find_free_dma(possible_dmas16)) < 0) {
                  snd_printk(KERN_ERR PFX "unable to find a free 16-bit DMA\n");
                  return -EBUSY;
            }
      }

      if (port[dev] != SNDRV_AUTO_PORT)
            return snd_sb16_isa_probe1(dev, pdev);
      else {
            static int possible_ports[] = {0x220, 0x240, 0x260, 0x280};
            int i;
            for (i = 0; i < ARRAY_SIZE(possible_ports); i++) {
                  port[dev] = possible_ports[i];
                  err = snd_sb16_isa_probe1(dev, pdev);
                  if (! err)
                        return 0;
            }
            return err;
      }
}

static int __devexit snd_sb16_isa_remove(struct device *pdev, unsigned int dev)
{
      snd_card_free(dev_get_drvdata(pdev));
      dev_set_drvdata(pdev, NULL);
      return 0;
}

#ifdef CONFIG_PM
static int snd_sb16_isa_suspend(struct device *dev, unsigned int n,
                        pm_message_t state)
{
      return snd_sb16_suspend(dev_get_drvdata(dev), state);
}

static int snd_sb16_isa_resume(struct device *dev, unsigned int n)
{
      return snd_sb16_resume(dev_get_drvdata(dev));
}
#endif

#ifdef SNDRV_SBAWE
#define DEV_NAME "sbawe"
#else
#define DEV_NAME "sb16"
#endif

static struct isa_driver snd_sb16_isa_driver = {
      .match            = snd_sb16_isa_match,
      .probe            = snd_sb16_isa_probe,
      .remove           = __devexit_p(snd_sb16_isa_remove),
#ifdef CONFIG_PM
      .suspend    = snd_sb16_isa_suspend,
      .resume           = snd_sb16_isa_resume,
#endif
      .driver           = {
            .name = DEV_NAME
      },
};


#ifdef CONFIG_PNP
static int __devinit snd_sb16_pnp_detect(struct pnp_card_link *pcard,
                               const struct pnp_card_device_id *pid)
{
      static int dev;
      struct snd_card *card;
      int res;

      for ( ; dev < SNDRV_CARDS; dev++) {
            if (!enable[dev] || !isapnp[dev])
                  continue;
            card = snd_sb16_card_new(dev);
            if (! card)
                  return -ENOMEM;
            snd_card_set_dev(card, &pcard->card->dev);
            if ((res = snd_card_sb16_pnp(dev, card->private_data, pcard, pid)) < 0 ||
                (res = snd_sb16_probe(card, dev)) < 0) {
                  snd_card_free(card);
                  return res;
            }
            pnp_set_card_drvdata(pcard, card);
            dev++;
            return 0;
      }

      return -ENODEV;
}

static void __devexit snd_sb16_pnp_remove(struct pnp_card_link * pcard)
{
      snd_card_free(pnp_get_card_drvdata(pcard));
      pnp_set_card_drvdata(pcard, NULL);
}

#ifdef CONFIG_PM
static int snd_sb16_pnp_suspend(struct pnp_card_link *pcard, pm_message_t state)
{
      return snd_sb16_suspend(pnp_get_card_drvdata(pcard), state);
}
static int snd_sb16_pnp_resume(struct pnp_card_link *pcard)
{
      return snd_sb16_resume(pnp_get_card_drvdata(pcard));
}
#endif

static struct pnp_card_driver sb16_pnpc_driver = {
      .flags = PNP_DRIVER_RES_DISABLE,
#ifdef SNDRV_SBAWE
      .name = "sbawe",
#else
      .name = "sb16",
#endif
      .id_table = snd_sb16_pnpids,
      .probe = snd_sb16_pnp_detect,
      .remove = __devexit_p(snd_sb16_pnp_remove),
#ifdef CONFIG_PM
      .suspend = snd_sb16_pnp_suspend,
      .resume = snd_sb16_pnp_resume,
#endif
};

#endif /* CONFIG_PNP */

static int __init alsa_card_sb16_init(void)
{
      int err;

      err = isa_register_driver(&snd_sb16_isa_driver, SNDRV_CARDS);
#ifdef CONFIG_PNP
      if (!err)
            isa_registered = 1;

      err = pnp_register_card_driver(&sb16_pnpc_driver);
      if (!err)
            pnp_registered = 1;

      if (isa_registered)
            err = 0;
#endif
      return err;
}

static void __exit alsa_card_sb16_exit(void)
{
#ifdef CONFIG_PNP
      if (pnp_registered)
            pnp_unregister_card_driver(&sb16_pnpc_driver);
      if (isa_registered)
#endif
            isa_unregister_driver(&snd_sb16_isa_driver);
}

module_init(alsa_card_sb16_init)
module_exit(alsa_card_sb16_exit)

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