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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 IS_ENABLED(CONFIG_GAMEPORT)
 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_hw_array(port, long, ioport, NULL, 0444);
 55 MODULE_PARM_DESC(port, "Port # for CMI8328 driver.");
 56 module_param_hw_array(irq, int, irq, NULL, 0444);
 57 MODULE_PARM_DESC(irq, "IRQ # for CMI8328 driver.");
 58 module_param_hw_array(dma1, int, dma, NULL, 0444);
 59 MODULE_PARM_DESC(dma1, "DMA1 for CMI8328 driver.");
 60 module_param_hw_array(dma2, int, dma, NULL, 0444);
 61 MODULE_PARM_DESC(dma2, "DMA2 for CMI8328 driver.");
 62 
 63 module_param_hw_array(mpuport, long, ioport, NULL, 0444);
 64 MODULE_PARM_DESC(mpuport, "MPU-401 port # for CMI8328 driver.");
 65 module_param_hw_array(mpuirq, int, irq, 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 #ifdef CONFIG_PM
130 static void snd_cmi8328_cfg_save(u16 port, u8 cfg[])
131 {
132         cfg[0] = snd_cmi8328_cfg_read(port, CFG1);
133         cfg[1] = snd_cmi8328_cfg_read(port, CFG2);
134         cfg[2] = snd_cmi8328_cfg_read(port, CFG3);
135 }
136 
137 static void snd_cmi8328_cfg_restore(u16 port, u8 cfg[])
138 {
139         snd_cmi8328_cfg_write(port, CFG1, cfg[0]);
140         snd_cmi8328_cfg_write(port, CFG2, cfg[1]);
141         snd_cmi8328_cfg_write(port, CFG3, cfg[2]);
142 }
143 #endif /* CONFIG_PM */
144 
145 static int snd_cmi8328_mixer(struct snd_wss *chip)
146 {
147         struct snd_card *card;
148         struct snd_ctl_elem_id id1, id2;
149         int err;
150 
151         card = chip->card;
152 
153         memset(&id1, 0, sizeof(id1));
154         memset(&id2, 0, sizeof(id2));
155         id1.iface = id2.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
156         /* rename AUX0 switch to CD */
157         strcpy(id1.name, "Aux Playback Switch");
158         strcpy(id2.name, "CD Playback Switch");
159         err = snd_ctl_rename_id(card, &id1, &id2);
160         if (err < 0) {
161                 snd_printk(KERN_ERR "error renaming control\n");
162                 return err;
163         }
164         /* rename AUX0 volume to CD */
165         strcpy(id1.name, "Aux Playback Volume");
166         strcpy(id2.name, "CD Playback Volume");
167         err = snd_ctl_rename_id(card, &id1, &id2);
168         if (err < 0) {
169                 snd_printk(KERN_ERR "error renaming control\n");
170                 return err;
171         }
172         /* rename AUX1 switch to Synth */
173         strcpy(id1.name, "Aux Playback Switch");
174         id1.index = 1;
175         strcpy(id2.name, "Synth Playback Switch");
176         err = snd_ctl_rename_id(card, &id1, &id2);
177         if (err < 0) {
178                 snd_printk(KERN_ERR "error renaming control\n");
179                 return err;
180         }
181         /* rename AUX1 volume to Synth */
182         strcpy(id1.name, "Aux Playback Volume");
183         id1.index = 1;
184         strcpy(id2.name, "Synth Playback Volume");
185         err = snd_ctl_rename_id(card, &id1, &id2);
186         if (err < 0) {
187                 snd_printk(KERN_ERR "error renaming control\n");
188                 return err;
189         }
190 
191         return 0;
192 }
193 
194 /* find index of an item in "-1"-ended array */
195 static int array_find(int array[], int item)
196 {
197         int i;
198 
199         for (i = 0; array[i] != -1; i++)
200                 if (array[i] == item)
201                         return i;
202 
203         return -1;
204 }
205 /* the same for long */
206 static int array_find_l(long array[], long item)
207 {
208         int i;
209 
210         for (i = 0; array[i] != -1; i++)
211                 if (array[i] == item)
212                         return i;
213 
214         return -1;
215 }
216 
217 static int snd_cmi8328_probe(struct device *pdev, unsigned int ndev)
218 {
219         struct snd_card *card;
220         struct snd_opl3 *opl3;
221         struct snd_cmi8328 *cmi;
222 #ifdef SUPPORT_JOYSTICK
223         struct resource *res;
224 #endif
225         int err, pos;
226         static long mpu_ports[] = { 0x330, 0x300, 0x310, 0x320, 0x332, 0x334,
227                                    0x336, -1 };
228         static u8 mpu_port_bits[] = { 3, 0, 1, 2, 4, 5, 6 };
229         static int mpu_irqs[] = { 9, 7, 5, 3, -1 };
230         static u8 mpu_irq_bits[] = { 3, 2, 1, 0 };
231         static int irqs[] = { 9, 10, 11, 7, -1 };
232         static u8 irq_bits[] = { 2, 3, 4, 1 };
233         static int dma1s[] = { 3, 1, 0, -1 };
234         static u8 dma_bits[] = { 3, 2, 1 };
235         static int dma2s[][2] = { {1, -1}, {0, -1}, {-1, -1}, {0, -1} };
236         u16 port = cmi8328_ports[ndev];
237         u8 val;
238 
239         /* 0xff is invalid configuration (but settable - hope it isn't set) */
240         if (snd_cmi8328_cfg_read(port, CFG1) == 0xff)
241                 return -ENODEV;
242         /* the SB disable bit must NEVER EVER be cleared or the WSS dies */
243         snd_cmi8328_cfg_write(port, CFG1, CFG1_SB_DISABLE);
244         if (snd_cmi8328_cfg_read(port, CFG1) != CFG1_SB_DISABLE)
245                 return -ENODEV;
246         /* disable everything first */
247         snd_cmi8328_cfg_write(port, CFG2, 0);   /* disable CDROM and MPU401 */
248         snd_cmi8328_cfg_write(port, CFG3, 0);   /* disable CDROM IRQ and DMA */
249 
250         if (irq[ndev] == SNDRV_AUTO_IRQ) {
251                 irq[ndev] = snd_legacy_find_free_irq(irqs);
252                 if (irq[ndev] < 0) {
253                         snd_printk(KERN_ERR "unable to find a free IRQ\n");
254                         return -EBUSY;
255                 }
256         }
257         if (dma1[ndev] == SNDRV_AUTO_DMA) {
258                 dma1[ndev] = snd_legacy_find_free_dma(dma1s);
259                 if (dma1[ndev] < 0) {
260                         snd_printk(KERN_ERR "unable to find a free DMA1\n");
261                         return -EBUSY;
262                 }
263         }
264         if (dma2[ndev] == SNDRV_AUTO_DMA) {
265                 dma2[ndev] = snd_legacy_find_free_dma(dma2s[dma1[ndev] % 4]);
266                 if (dma2[ndev] < 0) {
267                         snd_printk(KERN_WARNING "unable to find a free DMA2, full-duplex will not work\n");
268                         dma2[ndev] = -1;
269                 }
270         }
271         /* configure WSS IRQ... */
272         pos = array_find(irqs, irq[ndev]);
273         if (pos < 0) {
274                 snd_printk(KERN_ERR "invalid IRQ %d\n", irq[ndev]);
275                 return -EINVAL;
276         }
277         val = irq_bits[pos] << 3;
278         /* ...and DMA... */
279         pos = array_find(dma1s, dma1[ndev]);
280         if (pos < 0) {
281                 snd_printk(KERN_ERR "invalid DMA1 %d\n", dma1[ndev]);
282                 return -EINVAL;
283         }
284         val |= dma_bits[pos];
285         /* ...and DMA2 */
286         if (dma2[ndev] >= 0 && dma1[ndev] != dma2[ndev]) {
287                 pos = array_find(dma2s[dma1[ndev]], dma2[ndev]);
288                 if (pos < 0) {
289                         snd_printk(KERN_ERR "invalid DMA2 %d\n", dma2[ndev]);
290                         return -EINVAL;
291                 }
292                 val |= 0x04; /* enable separate capture DMA */
293         }
294         outb(val, port);
295 
296         err = snd_card_new(pdev, index[ndev], id[ndev], THIS_MODULE,
297                            sizeof(struct snd_cmi8328), &card);
298         if (err < 0)
299                 return err;
300         cmi = card->private_data;
301         cmi->card = card;
302         cmi->port = port;
303         cmi->wss_cfg = val;
304 
305         err = snd_wss_create(card, port + 4, -1, irq[ndev], dma1[ndev],
306                         dma2[ndev], WSS_HW_DETECT, 0, &cmi->wss);
307         if (err < 0)
308                 goto error;
309 
310         err = snd_wss_pcm(cmi->wss, 0);
311         if (err < 0)
312                 goto error;
313 
314         err = snd_wss_mixer(cmi->wss);
315         if (err < 0)
316                 goto error;
317         err = snd_cmi8328_mixer(cmi->wss);
318         if (err < 0)
319                 goto error;
320 
321         if (snd_wss_timer(cmi->wss, 0) < 0)
322                 snd_printk(KERN_WARNING "error initializing WSS timer\n");
323 
324         if (mpuport[ndev] == SNDRV_AUTO_PORT) {
325                 mpuport[ndev] = snd_legacy_find_free_ioport(mpu_ports, 2);
326                 if (mpuport[ndev] < 0)
327                         snd_printk(KERN_ERR "unable to find a free MPU401 port\n");
328         }
329         if (mpuirq[ndev] == SNDRV_AUTO_IRQ) {
330                 mpuirq[ndev] = snd_legacy_find_free_irq(mpu_irqs);
331                 if (mpuirq[ndev] < 0)
332                         snd_printk(KERN_ERR "unable to find a free MPU401 IRQ\n");
333         }
334         /* enable and configure MPU401 */
335         if (mpuport[ndev] > 0 && mpuirq[ndev] > 0) {
336                 val = CFG2_MPU_ENABLE;
337                 pos = array_find_l(mpu_ports, mpuport[ndev]);
338                 if (pos < 0)
339                         snd_printk(KERN_WARNING "invalid MPU401 port 0x%lx\n",
340                                                                 mpuport[ndev]);
341                 else {
342                         val |= mpu_port_bits[pos] << 5;
343                         pos = array_find(mpu_irqs, mpuirq[ndev]);
344                         if (pos < 0)
345                                 snd_printk(KERN_WARNING "invalid MPU401 IRQ %d\n",
346                                                                 mpuirq[ndev]);
347                         else {
348                                 val |= mpu_irq_bits[pos] << 3;
349                                 snd_cmi8328_cfg_write(port, CFG2, val);
350                                 if (snd_mpu401_uart_new(card, 0,
351                                                 MPU401_HW_MPU401, mpuport[ndev],
352                                                 0, mpuirq[ndev], NULL) < 0)
353                                         snd_printk(KERN_ERR "error initializing MPU401\n");
354                         }
355                 }
356         }
357         /* OPL3 is hardwired to 0x388 and cannot be disabled */
358         if (snd_opl3_create(card, 0x388, 0x38a, OPL3_HW_AUTO, 0, &opl3) < 0)
359                 snd_printk(KERN_ERR "error initializing OPL3\n");
360         else
361                 if (snd_opl3_hwdep_new(opl3, 0, 1, NULL) < 0)
362                         snd_printk(KERN_WARNING "error initializing OPL3 hwdep\n");
363 
364         strcpy(card->driver, "CMI8328");
365         strcpy(card->shortname, "C-Media CMI8328");
366         sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d,%d",
367                 card->shortname, cmi->wss->port, irq[ndev], dma1[ndev],
368                 (dma2[ndev] >= 0) ? dma2[ndev] : dma1[ndev]);
369 
370         dev_set_drvdata(pdev, card);
371         err = snd_card_register(card);
372         if (err < 0)
373                 goto error;
374 #ifdef SUPPORT_JOYSTICK
375         if (!gameport[ndev])
376                 return 0;
377         /* gameport is hardwired to 0x200 */
378         res = request_region(0x200, 8, "CMI8328 gameport");
379         if (!res)
380                 snd_printk(KERN_WARNING "unable to allocate gameport I/O port\n");
381         else {
382                 struct gameport *gp = cmi->gameport = gameport_allocate_port();
383                 if (!cmi->gameport)
384                         release_and_free_resource(res);
385                 else {
386                         gameport_set_name(gp, "CMI8328 Gameport");
387                         gameport_set_phys(gp, "%s/gameport0", dev_name(pdev));
388                         gameport_set_dev_parent(gp, pdev);
389                         gp->io = 0x200;
390                         gameport_set_port_data(gp, res);
391                         /* Enable gameport */
392                         snd_cmi8328_cfg_write(port, CFG1,
393                                         CFG1_SB_DISABLE | CFG1_GAMEPORT);
394                         gameport_register_port(gp);
395                 }
396         }
397 #endif
398         return 0;
399 error:
400         snd_card_free(card);
401 
402         return err;
403 }
404 
405 static int snd_cmi8328_remove(struct device *pdev, unsigned int dev)
406 {
407         struct snd_card *card = dev_get_drvdata(pdev);
408         struct snd_cmi8328 *cmi = card->private_data;
409 
410 #ifdef SUPPORT_JOYSTICK
411         if (cmi->gameport) {
412                 struct resource *res = gameport_get_port_data(cmi->gameport);
413                 gameport_unregister_port(cmi->gameport);
414                 release_and_free_resource(res);
415         }
416 #endif
417         /* disable everything */
418         snd_cmi8328_cfg_write(cmi->port, CFG1, CFG1_SB_DISABLE);
419         snd_cmi8328_cfg_write(cmi->port, CFG2, 0);
420         snd_cmi8328_cfg_write(cmi->port, CFG3, 0);
421         snd_card_free(card);
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         cmi->wss->suspend(cmi->wss);
438 
439         return 0;
440 }
441 
442 static int snd_cmi8328_resume(struct device *pdev, unsigned int n)
443 {
444         struct snd_card *card = dev_get_drvdata(pdev);
445         struct snd_cmi8328 *cmi;
446 
447         if (!card)      /* ignore absent devices */
448                 return 0;
449         cmi = card->private_data;
450         snd_cmi8328_cfg_restore(cmi->port, cmi->cfg);
451         outb(cmi->wss_cfg, cmi->port);
452         cmi->wss->resume(cmi->wss);
453         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
454 
455         return 0;
456 }
457 #endif
458 
459 static struct isa_driver snd_cmi8328_driver = {
460         .probe          = snd_cmi8328_probe,
461         .remove         = snd_cmi8328_remove,
462 #ifdef CONFIG_PM
463         .suspend        = snd_cmi8328_suspend,
464         .resume         = snd_cmi8328_resume,
465 #endif
466         .driver         = {
467                 .name   = "cmi8328"
468         },
469 };
470 
471 module_isa_driver(snd_cmi8328_driver, CMI8328_MAX);
472 

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