sound/isa/cmi8328.c

/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
snd_cmi8328_cfg_read
snd_cmi8328_cfg_write
snd_cmi8328_cfg_save
snd_cmi8328_cfg_restore
snd_cmi8328_mixer
array_find
array_find_l
snd_cmi8328_probe
snd_cmi8328_remove
snd_cmi8328_suspend
snd_cmi8328_resume
   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Driver for C-Media CMI8328-based soundcards, such as AudioExcel AV500
   4  * Copyright (c) 2012 Ondrej Zary
   5  *
   6  * AudioExcel AV500 card consists of:
   7  *  - CMI8328 - main chip (SB Pro emulation, gameport, OPL3, MPU401, CD-ROM)
   8  *  - CS4231A - WSS codec
   9  *  - Dream SAM9233+GMS950400+RAM+ROM: Wavetable MIDI, connected to MPU401
  10  */
  11 
  12 #include <linux/init.h>
  13 #include <linux/isa.h>
  14 #include <linux/module.h>
  15 #include <linux/gameport.h>
  16 #include <asm/dma.h>
  17 #include <sound/core.h>
  18 #include <sound/wss.h>
  19 #include <sound/opl3.h>
  20 #include <sound/mpu401.h>
  21 #define SNDRV_LEGACY_FIND_FREE_IOPORT
  22 #define SNDRV_LEGACY_FIND_FREE_IRQ
  23 #define SNDRV_LEGACY_FIND_FREE_DMA
  24 #include <sound/initval.h>
  25 
  26 MODULE_AUTHOR("Ondrej Zary <linux@rainbow-software.org>");
  27 MODULE_DESCRIPTION("C-Media CMI8328");
  28 MODULE_LICENSE("GPL");
  29 
  30 #if IS_ENABLED(CONFIG_GAMEPORT)
  31 #define SUPPORT_JOYSTICK 1
  32 #endif
  33 
  34 /* I/O port is configured by jumpers on the card to one of these */
  35 static int cmi8328_ports[] = { 0x530, 0xe80, 0xf40, 0x604 };
  36 #define CMI8328_MAX     ARRAY_SIZE(cmi8328_ports)
  37 
  38 static int index[CMI8328_MAX] =     {[0 ... (CMI8328_MAX-1)] = -1};
  39 static char *id[CMI8328_MAX] =      {[0 ... (CMI8328_MAX-1)] = NULL};
  40 static long port[CMI8328_MAX] =     {[0 ... (CMI8328_MAX-1)] = SNDRV_AUTO_PORT};
  41 static int irq[CMI8328_MAX] =       {[0 ... (CMI8328_MAX-1)] = SNDRV_AUTO_IRQ};
  42 static int dma1[CMI8328_MAX] =      {[0 ... (CMI8328_MAX-1)] = SNDRV_AUTO_DMA};
  43 static int dma2[CMI8328_MAX] =      {[0 ... (CMI8328_MAX-1)] = SNDRV_AUTO_DMA};
  44 static long mpuport[CMI8328_MAX] =  {[0 ... (CMI8328_MAX-1)] = SNDRV_AUTO_PORT};
  45 static int mpuirq[CMI8328_MAX] =    {[0 ... (CMI8328_MAX-1)] = SNDRV_AUTO_IRQ};
  46 #ifdef SUPPORT_JOYSTICK
  47 static bool gameport[CMI8328_MAX] = {[0 ... (CMI8328_MAX-1)] = true};
  48 #endif
  49 
  50 module_param_array(index, int, NULL, 0444);
  51 MODULE_PARM_DESC(index, "Index value for CMI8328 soundcard.");
  52 module_param_array(id, charp, NULL, 0444);
  53 MODULE_PARM_DESC(id, "ID string for CMI8328 soundcard.");
  54 
  55 module_param_hw_array(port, long, ioport, NULL, 0444);
  56 MODULE_PARM_DESC(port, "Port # for CMI8328 driver.");
  57 module_param_hw_array(irq, int, irq, NULL, 0444);
  58 MODULE_PARM_DESC(irq, "IRQ # for CMI8328 driver.");
  59 module_param_hw_array(dma1, int, dma, NULL, 0444);
  60 MODULE_PARM_DESC(dma1, "DMA1 for CMI8328 driver.");
  61 module_param_hw_array(dma2, int, dma, NULL, 0444);
  62 MODULE_PARM_DESC(dma2, "DMA2 for CMI8328 driver.");
  63 
  64 module_param_hw_array(mpuport, long, ioport, NULL, 0444);
  65 MODULE_PARM_DESC(mpuport, "MPU-401 port # for CMI8328 driver.");
  66 module_param_hw_array(mpuirq, int, irq, NULL, 0444);
  67 MODULE_PARM_DESC(mpuirq, "IRQ # for CMI8328 MPU-401 port.");
  68 #ifdef SUPPORT_JOYSTICK
  69 module_param_array(gameport, bool, NULL, 0444);
  70 MODULE_PARM_DESC(gameport, "Enable gameport.");
  71 #endif
  72 
  73 struct snd_cmi8328 {
  74         u16 port;
  75         u8 cfg[3];
  76         u8 wss_cfg;
  77         struct snd_card *card;
  78         struct snd_wss *wss;
  79 #ifdef SUPPORT_JOYSTICK
  80         struct gameport *gameport;
  81 #endif
  82 };
  83 
  84 /* CMI8328 configuration registers */
  85 #define CFG1 0x61
  86 #define CFG1_SB_DISABLE (1 << 0)
  87 #define CFG1_GAMEPORT   (1 << 1)
  88 /*
  89  * bit 0:    SB: 0=enabled, 1=disabled
  90  * bit 1:    gameport: 0=disabled, 1=enabled
  91  * bits 2-4: SB IRQ: 001=3, 010=5, 011=7, 100=9, 101=10, 110=11
  92  * bits 5-6: SB DMA: 00=disabled (when SB disabled), 01=DMA0, 10=DMA1, 11=DMA3
  93  * bit 7:    SB port: 0=0x220, 1=0x240
  94  */
  95 #define CFG2 0x62
  96 #define CFG2_MPU_ENABLE (1 << 2)
  97 /*
  98  * bits 0-1: CD-ROM mode: 00=disabled, 01=Panasonic, 10=Sony/Mitsumi/Wearnes,
  99                           11=IDE
 100  * bit 2:    MPU401: 0=disabled, 1=enabled
 101  * bits 3-4: MPU401 IRQ: 00=3, 01=5, 10=7, 11=9,
 102  * bits 5-7: MPU401 port: 000=0x300, 001=0x310, 010=0x320, 011=0x330, 100=0x332,
 103                           101=0x334, 110=0x336
 104  */
 105 #define CFG3 0x63
 106 /*
 107  * bits 0-2: CD-ROM IRQ: 000=disabled, 001=3, 010=5, 011=7, 100=9, 101=10,
 108                          110=11
 109  * bits 3-4: CD-ROM DMA: 00=disabled, 01=DMA0, 10=DMA1, 11=DMA3
 110  * bits 5-7: CD-ROM port: 000=0x300, 001=0x310, 010=0x320, 011=0x330, 100=0x340,
 111                           101=0x350, 110=0x360, 111=0x370
 112  */
 113 
 114 static u8 snd_cmi8328_cfg_read(u16 port, u8 reg)
 115 {
 116         outb(0x43, port + 3);
 117         outb(0x21, port + 3);
 118         outb(reg, port + 3);
 119         return inb(port);
 120 }
 121 
 122 static void snd_cmi8328_cfg_write(u16 port, u8 reg, u8 val)
 123 {
 124         outb(0x43, port + 3);
 125         outb(0x21, port + 3);
 126         outb(reg, port + 3);
 127         outb(val, port + 3);    /* yes, value goes to the same port as index */
 128 }
 129 
 130 #ifdef CONFIG_PM
 131 static void snd_cmi8328_cfg_save(u16 port, u8 cfg[])
 132 {
 133         cfg[0] = snd_cmi8328_cfg_read(port, CFG1);
 134         cfg[1] = snd_cmi8328_cfg_read(port, CFG2);
 135         cfg[2] = snd_cmi8328_cfg_read(port, CFG3);
 136 }
 137 
 138 static void snd_cmi8328_cfg_restore(u16 port, u8 cfg[])
 139 {
 140         snd_cmi8328_cfg_write(port, CFG1, cfg[0]);
 141         snd_cmi8328_cfg_write(port, CFG2, cfg[1]);
 142         snd_cmi8328_cfg_write(port, CFG3, cfg[2]);
 143 }
 144 #endif /* CONFIG_PM */
 145 
 146 static int snd_cmi8328_mixer(struct snd_wss *chip)
 147 {
 148         struct snd_card *card;
 149         struct snd_ctl_elem_id id1, id2;
 150         int err;
 151 
 152         card = chip->card;
 153 
 154         memset(&id1, 0, sizeof(id1));
 155         memset(&id2, 0, sizeof(id2));
 156         id1.iface = id2.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 157         /* rename AUX0 switch to CD */
 158         strcpy(id1.name, "Aux Playback Switch");
 159         strcpy(id2.name, "CD Playback Switch");
 160         err = snd_ctl_rename_id(card, &id1, &id2);
 161         if (err < 0) {
 162                 snd_printk(KERN_ERR "error renaming control\n");
 163                 return err;
 164         }
 165         /* rename AUX0 volume to CD */
 166         strcpy(id1.name, "Aux Playback Volume");
 167         strcpy(id2.name, "CD Playback Volume");
 168         err = snd_ctl_rename_id(card, &id1, &id2);
 169         if (err < 0) {
 170                 snd_printk(KERN_ERR "error renaming control\n");
 171                 return err;
 172         }
 173         /* rename AUX1 switch to Synth */
 174         strcpy(id1.name, "Aux Playback Switch");
 175         id1.index = 1;
 176         strcpy(id2.name, "Synth Playback Switch");
 177         err = snd_ctl_rename_id(card, &id1, &id2);
 178         if (err < 0) {
 179                 snd_printk(KERN_ERR "error renaming control\n");
 180                 return err;
 181         }
 182         /* rename AUX1 volume to Synth */
 183         strcpy(id1.name, "Aux Playback Volume");
 184         id1.index = 1;
 185         strcpy(id2.name, "Synth Playback Volume");
 186         err = snd_ctl_rename_id(card, &id1, &id2);
 187         if (err < 0) {
 188                 snd_printk(KERN_ERR "error renaming control\n");
 189                 return err;
 190         }
 191 
 192         return 0;
 193 }
 194 
 195 /* find index of an item in "-1"-ended array */
 196 static int array_find(int array[], int item)
 197 {
 198         int i;
 199 
 200         for (i = 0; array[i] != -1; i++)
 201                 if (array[i] == item)
 202                         return i;
 203 
 204         return -1;
 205 }
 206 /* the same for long */
 207 static int array_find_l(long array[], long item)
 208 {
 209         int i;
 210 
 211         for (i = 0; array[i] != -1; i++)
 212                 if (array[i] == item)
 213                         return i;
 214 
 215         return -1;
 216 }
 217 
 218 static int snd_cmi8328_probe(struct device *pdev, unsigned int ndev)
 219 {
 220         struct snd_card *card;
 221         struct snd_opl3 *opl3;
 222         struct snd_cmi8328 *cmi;
 223 #ifdef SUPPORT_JOYSTICK
 224         struct resource *res;
 225 #endif
 226         int err, pos;
 227         static long mpu_ports[] = { 0x330, 0x300, 0x310, 0x320, 0x332, 0x334,
 228                                    0x336, -1 };
 229         static u8 mpu_port_bits[] = { 3, 0, 1, 2, 4, 5, 6 };
 230         static int mpu_irqs[] = { 9, 7, 5, 3, -1 };
 231         static u8 mpu_irq_bits[] = { 3, 2, 1, 0 };
 232         static int irqs[] = { 9, 10, 11, 7, -1 };
 233         static u8 irq_bits[] = { 2, 3, 4, 1 };
 234         static int dma1s[] = { 3, 1, 0, -1 };
 235         static u8 dma_bits[] = { 3, 2, 1 };
 236         static int dma2s[][2] = { {1, -1}, {0, -1}, {-1, -1}, {0, -1} };
 237         u16 port = cmi8328_ports[ndev];
 238         u8 val;
 239 
 240         /* 0xff is invalid configuration (but settable - hope it isn't set) */
 241         if (snd_cmi8328_cfg_read(port, CFG1) == 0xff)
 242                 return -ENODEV;
 243         /* the SB disable bit must NEVER EVER be cleared or the WSS dies */
 244         snd_cmi8328_cfg_write(port, CFG1, CFG1_SB_DISABLE);
 245         if (snd_cmi8328_cfg_read(port, CFG1) != CFG1_SB_DISABLE)
 246                 return -ENODEV;
 247         /* disable everything first */
 248         snd_cmi8328_cfg_write(port, CFG2, 0);   /* disable CDROM and MPU401 */
 249         snd_cmi8328_cfg_write(port, CFG3, 0);   /* disable CDROM IRQ and DMA */
 250 
 251         if (irq[ndev] == SNDRV_AUTO_IRQ) {
 252                 irq[ndev] = snd_legacy_find_free_irq(irqs);
 253                 if (irq[ndev] < 0) {
 254                         snd_printk(KERN_ERR "unable to find a free IRQ\n");
 255                         return -EBUSY;
 256                 }
 257         }
 258         if (dma1[ndev] == SNDRV_AUTO_DMA) {
 259                 dma1[ndev] = snd_legacy_find_free_dma(dma1s);
 260                 if (dma1[ndev] < 0) {
 261                         snd_printk(KERN_ERR "unable to find a free DMA1\n");
 262                         return -EBUSY;
 263                 }
 264         }
 265         if (dma2[ndev] == SNDRV_AUTO_DMA) {
 266                 dma2[ndev] = snd_legacy_find_free_dma(dma2s[dma1[ndev] % 4]);
 267                 if (dma2[ndev] < 0) {
 268                         snd_printk(KERN_WARNING "unable to find a free DMA2, full-duplex will not work\n");
 269                         dma2[ndev] = -1;
 270                 }
 271         }
 272         /* configure WSS IRQ... */
 273         pos = array_find(irqs, irq[ndev]);
 274         if (pos < 0) {
 275                 snd_printk(KERN_ERR "invalid IRQ %d\n", irq[ndev]);
 276                 return -EINVAL;
 277         }
 278         val = irq_bits[pos] << 3;
 279         /* ...and DMA... */
 280         pos = array_find(dma1s, dma1[ndev]);
 281         if (pos < 0) {
 282                 snd_printk(KERN_ERR "invalid DMA1 %d\n", dma1[ndev]);
 283                 return -EINVAL;
 284         }
 285         val |= dma_bits[pos];
 286         /* ...and DMA2 */
 287         if (dma2[ndev] >= 0 && dma1[ndev] != dma2[ndev]) {
 288                 pos = array_find(dma2s[dma1[ndev]], dma2[ndev]);
 289                 if (pos < 0) {
 290                         snd_printk(KERN_ERR "invalid DMA2 %d\n", dma2[ndev]);
 291                         return -EINVAL;
 292                 }
 293                 val |= 0x04; /* enable separate capture DMA */
 294         }
 295         outb(val, port);
 296 
 297         err = snd_card_new(pdev, index[ndev], id[ndev], THIS_MODULE,
 298                            sizeof(struct snd_cmi8328), &card);
 299         if (err < 0)
 300                 return err;
 301         cmi = card->private_data;
 302         cmi->card = card;
 303         cmi->port = port;
 304         cmi->wss_cfg = val;
 305 
 306         err = snd_wss_create(card, port + 4, -1, irq[ndev], dma1[ndev],
 307                         dma2[ndev], WSS_HW_DETECT, 0, &cmi->wss);
 308         if (err < 0)
 309                 goto error;
 310 
 311         err = snd_wss_pcm(cmi->wss, 0);
 312         if (err < 0)
 313                 goto error;
 314 
 315         err = snd_wss_mixer(cmi->wss);
 316         if (err < 0)
 317                 goto error;
 318         err = snd_cmi8328_mixer(cmi->wss);
 319         if (err < 0)
 320                 goto error;
 321 
 322         if (snd_wss_timer(cmi->wss, 0) < 0)
 323                 snd_printk(KERN_WARNING "error initializing WSS timer\n");
 324 
 325         if (mpuport[ndev] == SNDRV_AUTO_PORT) {
 326                 mpuport[ndev] = snd_legacy_find_free_ioport(mpu_ports, 2);
 327                 if (mpuport[ndev] < 0)
 328                         snd_printk(KERN_ERR "unable to find a free MPU401 port\n");
 329         }
 330         if (mpuirq[ndev] == SNDRV_AUTO_IRQ) {
 331                 mpuirq[ndev] = snd_legacy_find_free_irq(mpu_irqs);
 332                 if (mpuirq[ndev] < 0)
 333                         snd_printk(KERN_ERR "unable to find a free MPU401 IRQ\n");
 334         }
 335         /* enable and configure MPU401 */
 336         if (mpuport[ndev] > 0 && mpuirq[ndev] > 0) {
 337                 val = CFG2_MPU_ENABLE;
 338                 pos = array_find_l(mpu_ports, mpuport[ndev]);
 339                 if (pos < 0)
 340                         snd_printk(KERN_WARNING "invalid MPU401 port 0x%lx\n",
 341                                                                 mpuport[ndev]);
 342                 else {
 343                         val |= mpu_port_bits[pos] << 5;
 344                         pos = array_find(mpu_irqs, mpuirq[ndev]);
 345                         if (pos < 0)
 346                                 snd_printk(KERN_WARNING "invalid MPU401 IRQ %d\n",
 347                                                                 mpuirq[ndev]);
 348                         else {
 349                                 val |= mpu_irq_bits[pos] << 3;
 350                                 snd_cmi8328_cfg_write(port, CFG2, val);
 351                                 if (snd_mpu401_uart_new(card, 0,
 352                                                 MPU401_HW_MPU401, mpuport[ndev],
 353                                                 0, mpuirq[ndev], NULL) < 0)
 354                                         snd_printk(KERN_ERR "error initializing MPU401\n");
 355                         }
 356                 }
 357         }
 358         /* OPL3 is hardwired to 0x388 and cannot be disabled */
 359         if (snd_opl3_create(card, 0x388, 0x38a, OPL3_HW_AUTO, 0, &opl3) < 0)
 360                 snd_printk(KERN_ERR "error initializing OPL3\n");
 361         else
 362                 if (snd_opl3_hwdep_new(opl3, 0, 1, NULL) < 0)
 363                         snd_printk(KERN_WARNING "error initializing OPL3 hwdep\n");
 364 
 365         strcpy(card->driver, "CMI8328");
 366         strcpy(card->shortname, "C-Media CMI8328");
 367         sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d,%d",
 368                 card->shortname, cmi->wss->port, irq[ndev], dma1[ndev],
 369                 (dma2[ndev] >= 0) ? dma2[ndev] : dma1[ndev]);
 370 
 371         dev_set_drvdata(pdev, card);
 372         err = snd_card_register(card);
 373         if (err < 0)
 374                 goto error;
 375 #ifdef SUPPORT_JOYSTICK
 376         if (!gameport[ndev])
 377                 return 0;
 378         /* gameport is hardwired to 0x200 */
 379         res = request_region(0x200, 8, "CMI8328 gameport");
 380         if (!res)
 381                 snd_printk(KERN_WARNING "unable to allocate gameport I/O port\n");
 382         else {
 383                 struct gameport *gp = cmi->gameport = gameport_allocate_port();
 384                 if (!cmi->gameport)
 385                         release_and_free_resource(res);
 386                 else {
 387                         gameport_set_name(gp, "CMI8328 Gameport");
 388                         gameport_set_phys(gp, "%s/gameport0", dev_name(pdev));
 389                         gameport_set_dev_parent(gp, pdev);
 390                         gp->io = 0x200;
 391                         gameport_set_port_data(gp, res);
 392                         /* Enable gameport */
 393                         snd_cmi8328_cfg_write(port, CFG1,
 394                                         CFG1_SB_DISABLE | CFG1_GAMEPORT);
 395                         gameport_register_port(gp);
 396                 }
 397         }
 398 #endif
 399         return 0;
 400 error:
 401         snd_card_free(card);
 402 
 403         return err;
 404 }
 405 
 406 static int snd_cmi8328_remove(struct device *pdev, unsigned int dev)
 407 {
 408         struct snd_card *card = dev_get_drvdata(pdev);
 409         struct snd_cmi8328 *cmi = card->private_data;
 410 
 411 #ifdef SUPPORT_JOYSTICK
 412         if (cmi->gameport) {
 413                 struct resource *res = gameport_get_port_data(cmi->gameport);
 414                 gameport_unregister_port(cmi->gameport);
 415                 release_and_free_resource(res);
 416         }
 417 #endif
 418         /* disable everything */
 419         snd_cmi8328_cfg_write(cmi->port, CFG1, CFG1_SB_DISABLE);
 420         snd_cmi8328_cfg_write(cmi->port, CFG2, 0);
 421         snd_cmi8328_cfg_write(cmi->port, CFG3, 0);
 422         snd_card_free(card);
 423         return 0;
 424 }
 425 
 426 #ifdef CONFIG_PM
 427 static int snd_cmi8328_suspend(struct device *pdev, unsigned int n,
 428                                 pm_message_t state)
 429 {
 430         struct snd_card *card = dev_get_drvdata(pdev);
 431         struct snd_cmi8328 *cmi;
 432 
 433         if (!card)      /* ignore absent devices */
 434                 return 0;
 435         cmi = card->private_data;
 436         snd_cmi8328_cfg_save(cmi->port, cmi->cfg);
 437         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 438         cmi->wss->suspend(cmi->wss);
 439 
 440         return 0;
 441 }
 442 
 443 static int snd_cmi8328_resume(struct device *pdev, unsigned int n)
 444 {
 445         struct snd_card *card = dev_get_drvdata(pdev);
 446         struct snd_cmi8328 *cmi;
 447 
 448         if (!card)      /* ignore absent devices */
 449                 return 0;
 450         cmi = card->private_data;
 451         snd_cmi8328_cfg_restore(cmi->port, cmi->cfg);
 452         outb(cmi->wss_cfg, cmi->port);
 453         cmi->wss->resume(cmi->wss);
 454         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 455 
 456         return 0;
 457 }
 458 #endif
 459 
 460 static struct isa_driver snd_cmi8328_driver = {
 461         .probe          = snd_cmi8328_probe,
 462         .remove         = snd_cmi8328_remove,
 463 #ifdef CONFIG_PM
 464         .suspend        = snd_cmi8328_suspend,
 465         .resume         = snd_cmi8328_resume,
 466 #endif
 467         .driver         = {
 468                 .name   = "cmi8328"
 469         },
 470 };
 471 
 472 module_isa_driver(snd_cmi8328_driver, CMI8328_MAX);
/* [<][>][^][v][top][bottom][index][help] */
root/sound/isa/cmi8328.c

DEFINITIONS
