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TOMOYO Linux Cross Reference
Linux/sound/isa/cmi8328.c

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  1 /*
  2  * Driver for C-Media CMI8328-based soundcards, such as AudioExcel AV500
  3  * Copyright (c) 2012 Ondrej Zary
  4  *
  5  * AudioExcel AV500 card consists of:
  6  *  - CMI8328 - main chip (SB Pro emulation, gameport, OPL3, MPU401, CD-ROM)
  7  *  - CS4231A - WSS codec
  8  *  - Dream SAM9233+GMS950400+RAM+ROM: Wavetable MIDI, connected to MPU401
  9  */
 10 
 11 #include <linux/init.h>
 12 #include <linux/isa.h>
 13 #include <linux/module.h>
 14 #include <linux/gameport.h>
 15 #include <asm/dma.h>
 16 #include <sound/core.h>
 17 #include <sound/wss.h>
 18 #include <sound/opl3.h>
 19 #include <sound/mpu401.h>
 20 #define SNDRV_LEGACY_FIND_FREE_IOPORT
 21 #define SNDRV_LEGACY_FIND_FREE_IRQ
 22 #define SNDRV_LEGACY_FIND_FREE_DMA
 23 #include <sound/initval.h>
 24 
 25 MODULE_AUTHOR("Ondrej Zary <linux@rainbow-software.org>");
 26 MODULE_DESCRIPTION("C-Media CMI8328");
 27 MODULE_LICENSE("GPL");
 28 
 29 #if defined(CONFIG_GAMEPORT) || defined(CONFIG_GAMEPORT_MODULE)
 30 #define SUPPORT_JOYSTICK 1
 31 #endif
 32 
 33 /* I/O port is configured by jumpers on the card to one of these */
 34 static int cmi8328_ports[] = { 0x530, 0xe80, 0xf40, 0x604 };
 35 #define CMI8328_MAX     ARRAY_SIZE(cmi8328_ports)
 36 
 37 static int index[CMI8328_MAX] =     {[0 ... (CMI8328_MAX-1)] = -1};
 38 static char *id[CMI8328_MAX] =      {[0 ... (CMI8328_MAX-1)] = NULL};
 39 static long port[CMI8328_MAX] =     {[0 ... (CMI8328_MAX-1)] = SNDRV_AUTO_PORT};
 40 static int irq[CMI8328_MAX] =       {[0 ... (CMI8328_MAX-1)] = SNDRV_AUTO_IRQ};
 41 static int dma1[CMI8328_MAX] =      {[0 ... (CMI8328_MAX-1)] = SNDRV_AUTO_DMA};
 42 static int dma2[CMI8328_MAX] =      {[0 ... (CMI8328_MAX-1)] = SNDRV_AUTO_DMA};
 43 static long mpuport[CMI8328_MAX] =  {[0 ... (CMI8328_MAX-1)] = SNDRV_AUTO_PORT};
 44 static int mpuirq[CMI8328_MAX] =    {[0 ... (CMI8328_MAX-1)] = SNDRV_AUTO_IRQ};
 45 #ifdef SUPPORT_JOYSTICK
 46 static bool gameport[CMI8328_MAX] = {[0 ... (CMI8328_MAX-1)] = true};
 47 #endif
 48 
 49 module_param_array(index, int, NULL, 0444);
 50 MODULE_PARM_DESC(index, "Index value for CMI8328 soundcard.");
 51 module_param_array(id, charp, NULL, 0444);
 52 MODULE_PARM_DESC(id, "ID string for CMI8328 soundcard.");
 53 
 54 module_param_array(port, long, NULL, 0444);
 55 MODULE_PARM_DESC(port, "Port # for CMI8328 driver.");
 56 module_param_array(irq, int, NULL, 0444);
 57 MODULE_PARM_DESC(irq, "IRQ # for CMI8328 driver.");
 58 module_param_array(dma1, int, NULL, 0444);
 59 MODULE_PARM_DESC(dma1, "DMA1 for CMI8328 driver.");
 60 module_param_array(dma2, int, NULL, 0444);
 61 MODULE_PARM_DESC(dma2, "DMA2 for CMI8328 driver.");
 62 
 63 module_param_array(mpuport, long, NULL, 0444);
 64 MODULE_PARM_DESC(mpuport, "MPU-401 port # for CMI8328 driver.");
 65 module_param_array(mpuirq, int, NULL, 0444);
 66 MODULE_PARM_DESC(mpuirq, "IRQ # for CMI8328 MPU-401 port.");
 67 #ifdef SUPPORT_JOYSTICK
 68 module_param_array(gameport, bool, NULL, 0444);
 69 MODULE_PARM_DESC(gameport, "Enable gameport.");
 70 #endif
 71 
 72 struct snd_cmi8328 {
 73         u16 port;
 74         u8 cfg[3];
 75         u8 wss_cfg;
 76         struct snd_card *card;
 77         struct snd_wss *wss;
 78 #ifdef SUPPORT_JOYSTICK
 79         struct gameport *gameport;
 80 #endif
 81 };
 82 
 83 /* CMI8328 configuration registers */
 84 #define CFG1 0x61
 85 #define CFG1_SB_DISABLE (1 << 0)
 86 #define CFG1_GAMEPORT   (1 << 1)
 87 /*
 88  * bit 0:    SB: 0=enabled, 1=disabled
 89  * bit 1:    gameport: 0=disabled, 1=enabled
 90  * bits 2-4: SB IRQ: 001=3, 010=5, 011=7, 100=9, 101=10, 110=11
 91  * bits 5-6: SB DMA: 00=disabled (when SB disabled), 01=DMA0, 10=DMA1, 11=DMA3
 92  * bit 7:    SB port: 0=0x220, 1=0x240
 93  */
 94 #define CFG2 0x62
 95 #define CFG2_MPU_ENABLE (1 << 2)
 96 /*
 97  * bits 0-1: CD-ROM mode: 00=disabled, 01=Panasonic, 10=Sony/Mitsumi/Wearnes,
 98                           11=IDE
 99  * bit 2:    MPU401: 0=disabled, 1=enabled
100  * bits 3-4: MPU401 IRQ: 00=3, 01=5, 10=7, 11=9,
101  * bits 5-7: MPU401 port: 000=0x300, 001=0x310, 010=0x320, 011=0x330, 100=0x332,
102                           101=0x334, 110=0x336
103  */
104 #define CFG3 0x63
105 /*
106  * bits 0-2: CD-ROM IRQ: 000=disabled, 001=3, 010=5, 011=7, 100=9, 101=10,
107                          110=11
108  * bits 3-4: CD-ROM DMA: 00=disabled, 01=DMA0, 10=DMA1, 11=DMA3
109  * bits 5-7: CD-ROM port: 000=0x300, 001=0x310, 010=0x320, 011=0x330, 100=0x340,
110                           101=0x350, 110=0x360, 111=0x370
111  */
112 
113 static u8 snd_cmi8328_cfg_read(u16 port, u8 reg)
114 {
115         outb(0x43, port + 3);
116         outb(0x21, port + 3);
117         outb(reg, port + 3);
118         return inb(port);
119 }
120 
121 static void snd_cmi8328_cfg_write(u16 port, u8 reg, u8 val)
122 {
123         outb(0x43, port + 3);
124         outb(0x21, port + 3);
125         outb(reg, port + 3);
126         outb(val, port + 3);    /* yes, value goes to the same port as index */
127 }
128 
129 static void snd_cmi8328_cfg_save(u16 port, u8 cfg[])
130 {
131         cfg[0] = snd_cmi8328_cfg_read(port, CFG1);
132         cfg[1] = snd_cmi8328_cfg_read(port, CFG2);
133         cfg[2] = snd_cmi8328_cfg_read(port, CFG3);
134 }
135 
136 static void snd_cmi8328_cfg_restore(u16 port, u8 cfg[])
137 {
138         snd_cmi8328_cfg_write(port, CFG1, cfg[0]);
139         snd_cmi8328_cfg_write(port, CFG2, cfg[1]);
140         snd_cmi8328_cfg_write(port, CFG3, cfg[2]);
141 }
142 
143 static int snd_cmi8328_mixer(struct snd_wss *chip)
144 {
145         struct snd_card *card;
146         struct snd_ctl_elem_id id1, id2;
147         int err;
148 
149         card = chip->card;
150 
151         memset(&id1, 0, sizeof(id1));
152         memset(&id2, 0, sizeof(id2));
153         id1.iface = id2.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
154         /* rename AUX0 switch to CD */
155         strcpy(id1.name, "Aux Playback Switch");
156         strcpy(id2.name, "CD Playback Switch");
157         err = snd_ctl_rename_id(card, &id1, &id2);
158         if (err < 0) {
159                 snd_printk(KERN_ERR "error renaming control\n");
160                 return err;
161         }
162         /* rename AUX0 volume to CD */
163         strcpy(id1.name, "Aux Playback Volume");
164         strcpy(id2.name, "CD Playback Volume");
165         err = snd_ctl_rename_id(card, &id1, &id2);
166         if (err < 0) {
167                 snd_printk(KERN_ERR "error renaming control\n");
168                 return err;
169         }
170         /* rename AUX1 switch to Synth */
171         strcpy(id1.name, "Aux Playback Switch");
172         id1.index = 1;
173         strcpy(id2.name, "Synth Playback Switch");
174         err = snd_ctl_rename_id(card, &id1, &id2);
175         if (err < 0) {
176                 snd_printk(KERN_ERR "error renaming control\n");
177                 return err;
178         }
179         /* rename AUX1 volume to Synth */
180         strcpy(id1.name, "Aux Playback Volume");
181         id1.index = 1;
182         strcpy(id2.name, "Synth Playback Volume");
183         err = snd_ctl_rename_id(card, &id1, &id2);
184         if (err < 0) {
185                 snd_printk(KERN_ERR "error renaming control\n");
186                 return err;
187         }
188 
189         return 0;
190 }
191 
192 /* find index of an item in "-1"-ended array */
193 int array_find(int array[], int item)
194 {
195         int i;
196 
197         for (i = 0; array[i] != -1; i++)
198                 if (array[i] == item)
199                         return i;
200 
201         return -1;
202 }
203 /* the same for long */
204 int array_find_l(long array[], long item)
205 {
206         int i;
207 
208         for (i = 0; array[i] != -1; i++)
209                 if (array[i] == item)
210                         return i;
211 
212         return -1;
213 }
214 
215 static int snd_cmi8328_probe(struct device *pdev, unsigned int ndev)
216 {
217         struct snd_card *card;
218         struct snd_opl3 *opl3;
219         struct snd_cmi8328 *cmi;
220 #ifdef SUPPORT_JOYSTICK
221         struct resource *res;
222 #endif
223         int err, pos;
224         static long mpu_ports[] = { 0x330, 0x300, 0x310, 0x320, 0x332, 0x334,
225                                    0x336, -1 };
226         static u8 mpu_port_bits[] = { 3, 0, 1, 2, 4, 5, 6 };
227         static int mpu_irqs[] = { 9, 7, 5, 3, -1 };
228         static u8 mpu_irq_bits[] = { 3, 2, 1, 0 };
229         static int irqs[] = { 9, 10, 11, 7, -1 };
230         static u8 irq_bits[] = { 2, 3, 4, 1 };
231         static int dma1s[] = { 3, 1, 0, -1 };
232         static u8 dma_bits[] = { 3, 2, 1 };
233         static int dma2s[][2] = { {1, -1}, {0, -1}, {-1, -1}, {0, -1} };
234         u16 port = cmi8328_ports[ndev];
235         u8 val;
236 
237         /* 0xff is invalid configuration (but settable - hope it isn't set) */
238         if (snd_cmi8328_cfg_read(port, CFG1) == 0xff)
239                 return -ENODEV;
240         /* the SB disable bit must NEVER EVER be cleared or the WSS dies */
241         snd_cmi8328_cfg_write(port, CFG1, CFG1_SB_DISABLE);
242         if (snd_cmi8328_cfg_read(port, CFG1) != CFG1_SB_DISABLE)
243                 return -ENODEV;
244         /* disable everything first */
245         snd_cmi8328_cfg_write(port, CFG2, 0);   /* disable CDROM and MPU401 */
246         snd_cmi8328_cfg_write(port, CFG3, 0);   /* disable CDROM IRQ and DMA */
247 
248         if (irq[ndev] == SNDRV_AUTO_IRQ) {
249                 irq[ndev] = snd_legacy_find_free_irq(irqs);
250                 if (irq[ndev] < 0) {
251                         snd_printk(KERN_ERR "unable to find a free IRQ\n");
252                         return -EBUSY;
253                 }
254         }
255         if (dma1[ndev] == SNDRV_AUTO_DMA) {
256                 dma1[ndev] = snd_legacy_find_free_dma(dma1s);
257                 if (dma1[ndev] < 0) {
258                         snd_printk(KERN_ERR "unable to find a free DMA1\n");
259                         return -EBUSY;
260                 }
261         }
262         if (dma2[ndev] == SNDRV_AUTO_DMA) {
263                 dma2[ndev] = snd_legacy_find_free_dma(dma2s[dma1[ndev] % 4]);
264                 if (dma2[ndev] < 0) {
265                         snd_printk(KERN_WARNING "unable to find a free DMA2, full-duplex will not work\n");
266                         dma2[ndev] = -1;
267                 }
268         }
269         /* configure WSS IRQ... */
270         pos = array_find(irqs, irq[ndev]);
271         if (pos < 0) {
272                 snd_printk(KERN_ERR "invalid IRQ %d\n", irq[ndev]);
273                 return -EINVAL;
274         }
275         val = irq_bits[pos] << 3;
276         /* ...and DMA... */
277         pos = array_find(dma1s, dma1[ndev]);
278         if (pos < 0) {
279                 snd_printk(KERN_ERR "invalid DMA1 %d\n", dma1[ndev]);
280                 return -EINVAL;
281         }
282         val |= dma_bits[pos];
283         /* ...and DMA2 */
284         if (dma2[ndev] >= 0 && dma1[ndev] != dma2[ndev]) {
285                 pos = array_find(dma2s[dma1[ndev]], dma2[ndev]);
286                 if (pos < 0) {
287                         snd_printk(KERN_ERR "invalid DMA2 %d\n", dma2[ndev]);
288                         return -EINVAL;
289                 }
290                 val |= 0x04; /* enable separate capture DMA */
291         }
292         outb(val, port);
293 
294         err = snd_card_create(index[ndev], id[ndev], THIS_MODULE,
295                                 sizeof(struct snd_cmi8328), &card);
296         if (err < 0)
297                 return err;
298         cmi = card->private_data;
299         cmi->card = card;
300         cmi->port = port;
301         cmi->wss_cfg = val;
302         snd_card_set_dev(card, pdev);
303 
304         err = snd_wss_create(card, port + 4, -1, irq[ndev], dma1[ndev],
305                         dma2[ndev], WSS_HW_DETECT, 0, &cmi->wss);
306         if (err < 0)
307                 goto error;
308 
309         err = snd_wss_pcm(cmi->wss, 0, NULL);
310         if (err < 0)
311                 goto error;
312 
313         err = snd_wss_mixer(cmi->wss);
314         if (err < 0)
315                 goto error;
316         err = snd_cmi8328_mixer(cmi->wss);
317         if (err < 0)
318                 goto error;
319 
320         if (snd_wss_timer(cmi->wss, 0, NULL) < 0)
321                 snd_printk(KERN_WARNING "error initializing WSS timer\n");
322 
323         if (mpuport[ndev] == SNDRV_AUTO_PORT) {
324                 mpuport[ndev] = snd_legacy_find_free_ioport(mpu_ports, 2);
325                 if (mpuport[ndev] < 0)
326                         snd_printk(KERN_ERR "unable to find a free MPU401 port\n");
327         }
328         if (mpuirq[ndev] == SNDRV_AUTO_IRQ) {
329                 mpuirq[ndev] = snd_legacy_find_free_irq(mpu_irqs);
330                 if (mpuirq[ndev] < 0)
331                         snd_printk(KERN_ERR "unable to find a free MPU401 IRQ\n");
332         }
333         /* enable and configure MPU401 */
334         if (mpuport[ndev] > 0 && mpuirq[ndev] > 0) {
335                 val = CFG2_MPU_ENABLE;
336                 pos = array_find_l(mpu_ports, mpuport[ndev]);
337                 if (pos < 0)
338                         snd_printk(KERN_WARNING "invalid MPU401 port 0x%lx\n",
339                                                                 mpuport[ndev]);
340                 else {
341                         val |= mpu_port_bits[pos] << 5;
342                         pos = array_find(mpu_irqs, mpuirq[ndev]);
343                         if (pos < 0)
344                                 snd_printk(KERN_WARNING "invalid MPU401 IRQ %d\n",
345                                                                 mpuirq[ndev]);
346                         else {
347                                 val |= mpu_irq_bits[pos] << 3;
348                                 snd_cmi8328_cfg_write(port, CFG2, val);
349                                 if (snd_mpu401_uart_new(card, 0,
350                                                 MPU401_HW_MPU401, mpuport[ndev],
351                                                 0, mpuirq[ndev], NULL) < 0)
352                                         snd_printk(KERN_ERR "error initializing MPU401\n");
353                         }
354                 }
355         }
356         /* OPL3 is hardwired to 0x388 and cannot be disabled */
357         if (snd_opl3_create(card, 0x388, 0x38a, OPL3_HW_AUTO, 0, &opl3) < 0)
358                 snd_printk(KERN_ERR "error initializing OPL3\n");
359         else
360                 if (snd_opl3_hwdep_new(opl3, 0, 1, NULL) < 0)
361                         snd_printk(KERN_WARNING "error initializing OPL3 hwdep\n");
362 
363         strcpy(card->driver, "CMI8328");
364         strcpy(card->shortname, "C-Media CMI8328");
365         sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d,%d",
366                 card->shortname, cmi->wss->port, irq[ndev], dma1[ndev],
367                 (dma2[ndev] >= 0) ? dma2[ndev] : dma1[ndev]);
368 
369         dev_set_drvdata(pdev, card);
370         err = snd_card_register(card);
371         if (err < 0)
372                 goto error;
373 #ifdef SUPPORT_JOYSTICK
374         if (!gameport[ndev])
375                 return 0;
376         /* gameport is hardwired to 0x200 */
377         res = request_region(0x200, 8, "CMI8328 gameport");
378         if (!res)
379                 snd_printk(KERN_WARNING "unable to allocate gameport I/O port\n");
380         else {
381                 struct gameport *gp = cmi->gameport = gameport_allocate_port();
382                 if (!cmi->gameport)
383                         release_and_free_resource(res);
384                 else {
385                         gameport_set_name(gp, "CMI8328 Gameport");
386                         gameport_set_phys(gp, "%s/gameport0", dev_name(pdev));
387                         gameport_set_dev_parent(gp, pdev);
388                         gp->io = 0x200;
389                         gameport_set_port_data(gp, res);
390                         /* Enable gameport */
391                         snd_cmi8328_cfg_write(port, CFG1,
392                                         CFG1_SB_DISABLE | CFG1_GAMEPORT);
393                         gameport_register_port(gp);
394                 }
395         }
396 #endif
397         return 0;
398 error:
399         snd_card_free(card);
400 
401         return err;
402 }
403 
404 static int snd_cmi8328_remove(struct device *pdev, unsigned int dev)
405 {
406         struct snd_card *card = dev_get_drvdata(pdev);
407         struct snd_cmi8328 *cmi = card->private_data;
408 
409 #ifdef SUPPORT_JOYSTICK
410         if (cmi->gameport) {
411                 struct resource *res = gameport_get_port_data(cmi->gameport);
412                 gameport_unregister_port(cmi->gameport);
413                 release_and_free_resource(res);
414         }
415 #endif
416         /* disable everything */
417         snd_cmi8328_cfg_write(cmi->port, CFG1, CFG1_SB_DISABLE);
418         snd_cmi8328_cfg_write(cmi->port, CFG2, 0);
419         snd_cmi8328_cfg_write(cmi->port, CFG3, 0);
420         snd_card_free(card);
421         dev_set_drvdata(pdev, NULL);
422         return 0;
423 }
424 
425 #ifdef CONFIG_PM
426 static int snd_cmi8328_suspend(struct device *pdev, unsigned int n,
427                                 pm_message_t state)
428 {
429         struct snd_card *card = dev_get_drvdata(pdev);
430         struct snd_cmi8328 *cmi;
431 
432         if (!card)      /* ignore absent devices */
433                 return 0;
434         cmi = card->private_data;
435         snd_cmi8328_cfg_save(cmi->port, cmi->cfg);
436         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
437         snd_pcm_suspend_all(cmi->wss->pcm);
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 static int __init alsa_card_cmi8328_init(void)
473 {
474         return isa_register_driver(&snd_cmi8328_driver, CMI8328_MAX);
475 }
476 
477 static void __exit alsa_card_cmi8328_exit(void)
478 {
479         isa_unregister_driver(&snd_cmi8328_driver);
480 }
481 
482 module_init(alsa_card_cmi8328_init)
483 module_exit(alsa_card_cmi8328_exit)
484 

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