sound/isa/sb/sb8.c

   1 /*
   2  *  Driver for SoundBlaster 1.0/2.0/Pro soundcards and compatible
   3  *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
   4  *
   5  *
   6  *   This program is free software; you can redistribute it and/or modify
   7  *   it under the terms of the GNU General Public License as published by
   8  *   the Free Software Foundation; either version 2 of the License, or
   9  *   (at your option) any later version.
  10  *
  11  *   This program is distributed in the hope that it will be useful,
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *   GNU General Public License for more details.
  15  *
  16  *   You should have received a copy of the GNU General Public License
  17  *   along with this program; if not, write to the Free Software
  18  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19  *
  20  */
  21
  22 #include <sound/driver.h>
  23 #include <linux/init.h>
  24 #include <linux/err.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/slab.h>
  27 #include <linux/ioport.h>
  28 #include <linux/moduleparam.h>
  29 #include <sound/core.h>
  30 #include <sound/sb.h>
  31 #include <sound/opl3.h>
  32 #include <sound/initval.h>
  33
  34 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
  35 MODULE_DESCRIPTION("Sound Blaster 1.0/2.0/Pro");
  36 MODULE_LICENSE("GPL");
  37 MODULE_SUPPORTED_DEVICE("{{Creative Labs,SB 1.0/SB 2.0/SB Pro}}");
  38
  39 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  40 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  41 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;  /* Enable this card */
  42 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;     /* 0x220,0x240,0x260 */
  43 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;        /* 5,7,9,10 */
  44 static int dma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* 1,3 */
  45
  46 module_param_array(index, int, NULL, 0444);
  47 MODULE_PARM_DESC(index, "Index value for Sound Blaster soundcard.");
  48 module_param_array(id, charp, NULL, 0444);
  49 MODULE_PARM_DESC(id, "ID string for Sound Blaster soundcard.");
  50 module_param_array(enable, bool, NULL, 0444);
  51 MODULE_PARM_DESC(enable, "Enable Sound Blaster soundcard.");
  52 module_param_array(port, long, NULL, 0444);
  53 MODULE_PARM_DESC(port, "Port # for SB8 driver.");
  54 module_param_array(irq, int, NULL, 0444);
  55 MODULE_PARM_DESC(irq, "IRQ # for SB8 driver.");
  56 module_param_array(dma8, int, NULL, 0444);
  57 MODULE_PARM_DESC(dma8, "8-bit DMA # for SB8 driver.");
  58
  59 static struct platform_device *devices[SNDRV_CARDS];
  60
  61 struct snd_sb8 {
  62         struct resource *fm_res;        /* used to block FM i/o region for legacy cards */
  63         struct snd_sb *chip;
  64 };
  65
  66 static irqreturn_t snd_sb8_interrupt(int irq, void *dev_id, struct pt_regs *regs)
  67 {
  68         struct snd_sb *chip = dev_id;
  69
  70         if (chip->open & SB_OPEN_PCM) {
  71                 return snd_sb8dsp_interrupt(chip);
  72         } else {
  73                 return snd_sb8dsp_midi_interrupt(chip);
  74         }
  75 }
  76
  77 static void snd_sb8_free(struct snd_card *card)
  78 {
  79         struct snd_sb8 *acard = (struct snd_sb8 *)card->private_data;
  80
  81         if (acard == NULL)
  82                 return;
  83         release_and_free_resource(acard->fm_res);
  84 }
  85
  86 static int __init snd_sb8_probe(struct platform_device *pdev)
  87 {
  88         int dev = pdev->id;
  89         struct snd_sb *chip;
  90         struct snd_card *card;
  91         struct snd_sb8 *acard;
  92         struct snd_opl3 *opl3;
  93         int err;
  94
  95         card = snd_card_new(index[dev], id[dev], THIS_MODULE,
  96                             sizeof(struct snd_sb8));
  97         if (card == NULL)
  98                 return -ENOMEM;
  99         acard = card->private_data;
 100         card->private_free = snd_sb8_free;
 101
 102         /* block the 0x388 port to avoid PnP conflicts */
 103         acard->fm_res = request_region(0x388, 4, "SoundBlaster FM");
 104
 105         if (port[dev] != SNDRV_AUTO_PORT) {
 106                 if ((err = snd_sbdsp_create(card, port[dev], irq[dev],
 107                                             snd_sb8_interrupt,
 108                                             dma8[dev],
 109                                             -1,
 110                                             SB_HW_AUTO,
 111                                             &chip)) < 0)
 112                         goto _err;
 113         } else {
 114                 /* auto-probe legacy ports */
 115                 static unsigned long possible_ports[] = {
 116                         0x220, 0x240, 0x260,
 117                 };
 118                 int i;
 119                 for (i = 0; i < ARRAY_SIZE(possible_ports); i++) {
 120                         err = snd_sbdsp_create(card, possible_ports[i],
 121                                                irq[dev],
 122                                                snd_sb8_interrupt,
 123                                                dma8[dev],
 124                                                -1,
 125                                                SB_HW_AUTO,
 126                                                &chip);
 127                         if (err >= 0) {
 128                                 port[dev] = possible_ports[i];
 129                                 break;
 130                         }
 131                 }
 132                 if (i >= ARRAY_SIZE(possible_ports))
 133                         goto _err;
 134         }
 135         acard->chip = chip;
 136
 137         if (chip->hardware >= SB_HW_16) {
 138                 if (chip->hardware == SB_HW_ALS100)
 139                         snd_printk(KERN_WARNING "ALS100 chip detected at 0x%lx, try snd-als100 module\n",
 140                                     port[dev]);
 141                 else
 142                         snd_printk(KERN_WARNING "SB 16 chip detected at 0x%lx, try snd-sb16 module\n",
 143                                    port[dev]);
 144                 err = -ENODEV;
 145                 goto _err;
 146         }
 147
 148         if ((err = snd_sb8dsp_pcm(chip, 0, NULL)) < 0)
 149                 goto _err;
 150
 151         if ((err = snd_sbmixer_new(chip)) < 0)
 152                 goto _err;
 153
 154         if (chip->hardware == SB_HW_10 || chip->hardware == SB_HW_20) {
 155                 if ((err = snd_opl3_create(card, chip->port + 8, 0,
 156                                            OPL3_HW_AUTO, 1,
 157                                            &opl3)) < 0) {
 158                         snd_printk(KERN_WARNING "sb8: no OPL device at 0x%lx\n", chip->port + 8);
 159                 }
 160         } else {
 161                 if ((err = snd_opl3_create(card, chip->port, chip->port + 2,
 162                                            OPL3_HW_AUTO, 1,
 163                                            &opl3)) < 0) {
 164                         snd_printk(KERN_WARNING "sb8: no OPL device at 0x%lx-0x%lx\n",
 165                                    chip->port, chip->port + 2);
 166                 }
 167         }
 168         if (err >= 0) {
 169                 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0)
 170                         goto _err;
 171         }
 172
 173         if ((err = snd_sb8dsp_midi(chip, 0, NULL)) < 0)
 174                 goto _err;
 175
 176         strcpy(card->driver, chip->hardware == SB_HW_PRO ? "SB Pro" : "SB8");
 177         strcpy(card->shortname, chip->name);
 178         sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
 179                 chip->name,
 180                 chip->port,
 181                 irq[dev], dma8[dev]);
 182
 183         snd_card_set_dev(card, &pdev->dev);
 184
 185         if ((err = snd_card_register(card)) < 0)
 186                 goto _err;
 187
 188         platform_set_drvdata(pdev, card);
 189         return 0;
 190
 191  _err:
 192         snd_card_free(card);
 193         return err;
 194 }
 195
 196 static int snd_sb8_remove(struct platform_device *pdev)
 197 {
 198         snd_card_free(platform_get_drvdata(pdev));
 199         platform_set_drvdata(pdev, NULL);
 200         return 0;
 201 }
 202
 203 #ifdef CONFIG_PM
 204 static int snd_sb8_suspend(struct platform_device *dev, pm_message_t state)
 205 {
 206         struct snd_card *card = platform_get_drvdata(dev);
 207         struct snd_sb8 *acard = card->private_data;
 208         struct snd_sb *chip = acard->chip;
 209
 210         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 211         snd_pcm_suspend_all(chip->pcm);
 212         snd_sbmixer_suspend(chip);
 213         return 0;
 214 }
 215
 216 static int snd_sb8_resume(struct platform_device *dev)
 217 {
 218         struct snd_card *card = platform_get_drvdata(dev);
 219         struct snd_sb8 *acard = card->private_data;
 220         struct snd_sb *chip = acard->chip;
 221
 222         snd_sbdsp_reset(chip);
 223         snd_sbmixer_resume(chip);
 224         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 225         return 0;
 226 }
 227 #endif
 228
 229 #define SND_SB8_DRIVER  "snd_sb8"
 230
 231 static struct platform_driver snd_sb8_driver = {
 232         .probe          = snd_sb8_probe,
 233         .remove         = snd_sb8_remove,
 234 #ifdef CONFIG_PM
 235         .suspend        = snd_sb8_suspend,
 236         .resume         = snd_sb8_resume,
 237 #endif
 238         .driver         = {
 239                 .name   = SND_SB8_DRIVER
 240         },
 241 };
 242
 243 static void __init_or_module snd_sb8_unregister_all(void)
 244 {
 245         int i;
 246
 247         for (i = 0; i < ARRAY_SIZE(devices); ++i)
 248                 platform_device_unregister(devices[i]);
 249         platform_driver_unregister(&snd_sb8_driver);
 250 }
 251
 252 static int __init alsa_card_sb8_init(void)
 253 {
 254         int i, cards, err;
 255
 256         err = platform_driver_register(&snd_sb8_driver);
 257         if (err < 0)
 258                 return err;
 259
 260         cards = 0;
 261         for (i = 0; i < SNDRV_CARDS; i++) {
 262                 struct platform_device *device;
 263                 if (! enable[i])
 264                         continue;
 265                 device = platform_device_register_simple(SND_SB8_DRIVER,
 266                                                          i, NULL, 0);
 267                 if (IS_ERR(device)) {
 268                         err = PTR_ERR(device);
 269                         goto errout;
 270                 }
 271                 devices[i] = device;
 272                 cards++;
 273         }
 274         if (!cards) {
 275 #ifdef MODULE
 276                 snd_printk(KERN_ERR "Sound Blaster soundcard not found or device busy\n");
 277 #endif
 278                 err = -ENODEV;
 279                 goto errout;
 280         }
 281         return 0;
 282
 283  errout:
 284         snd_sb8_unregister_all();
 285         return err;
 286 }
 287
 288 static void __exit alsa_card_sb8_exit(void)
 289 {
 290         snd_sb8_unregister_all();
 291 }
 292
 293 module_init(alsa_card_sb8_init)
 294 module_exit(alsa_card_sb8_exit)