2 * Driver for C-Media CMI8328-based soundcards, such as AudioExcel AV500
3 * Copyright (c) 2012 Ondrej Zary
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
11 #include <linux/init.h>
12 #include <linux/isa.h>
13 #include <linux/module.h>
14 #include <linux/gameport.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>
25 MODULE_AUTHOR("Ondrej Zary <linux@rainbow-software.org>");
26 MODULE_DESCRIPTION("C-Media CMI8328");
27 MODULE_LICENSE("GPL");
29 #if defined(CONFIG_GAMEPORT) || defined(CONFIG_GAMEPORT_MODULE)
30 #define SUPPORT_JOYSTICK 1
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)
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};
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.");
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.");
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.");
76 struct snd_card *card;
78 #ifdef SUPPORT_JOYSTICK
79 struct gameport *gameport;
83 /* CMI8328 configuration registers */
85 #define CFG1_SB_DISABLE (1 << 0)
86 #define CFG1_GAMEPORT (1 << 1)
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
95 #define CFG2_MPU_ENABLE (1 << 2)
97 * bits 0-1: CD-ROM mode: 00=disabled, 01=Panasonic, 10=Sony/Mitsumi/Wearnes,
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,
106 * bits 0-2: CD-ROM IRQ: 000=disabled, 001=3, 010=5, 011=7, 100=9, 101=10,
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
113 static u8 snd_cmi8328_cfg_read(u16 port, u8 reg)
115 outb(0x43, port + 3);
116 outb(0x21, port + 3);
121 static void snd_cmi8328_cfg_write(u16 port, u8 reg, u8 val)
123 outb(0x43, port + 3);
124 outb(0x21, port + 3);
126 outb(val, port + 3); /* yes, value goes to the same port as index */
130 static void snd_cmi8328_cfg_save(u16 port, u8 cfg[])
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);
137 static void snd_cmi8328_cfg_restore(u16 port, u8 cfg[])
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]);
143 #endif /* CONFIG_PM */
145 static int snd_cmi8328_mixer(struct snd_wss *chip)
147 struct snd_card *card;
148 struct snd_ctl_elem_id id1, id2;
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);
161 snd_printk(KERN_ERR "error renaming control\n");
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);
169 snd_printk(KERN_ERR "error renaming control\n");
172 /* rename AUX1 switch to Synth */
173 strcpy(id1.name, "Aux Playback Switch");
175 strcpy(id2.name, "Synth Playback Switch");
176 err = snd_ctl_rename_id(card, &id1, &id2);
178 snd_printk(KERN_ERR "error renaming control\n");
181 /* rename AUX1 volume to Synth */
182 strcpy(id1.name, "Aux Playback Volume");
184 strcpy(id2.name, "Synth Playback Volume");
185 err = snd_ctl_rename_id(card, &id1, &id2);
187 snd_printk(KERN_ERR "error renaming control\n");
194 /* find index of an item in "-1"-ended array */
195 int array_find(int array[], int item)
199 for (i = 0; array[i] != -1; i++)
200 if (array[i] == item)
205 /* the same for long */
206 int array_find_l(long array[], long item)
210 for (i = 0; array[i] != -1; i++)
211 if (array[i] == item)
217 static int snd_cmi8328_probe(struct device *pdev, unsigned int ndev)
219 struct snd_card *card;
220 struct snd_opl3 *opl3;
221 struct snd_cmi8328 *cmi;
222 #ifdef SUPPORT_JOYSTICK
223 struct resource *res;
226 static long mpu_ports[] = { 0x330, 0x300, 0x310, 0x320, 0x332, 0x334,
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];
239 /* 0xff is invalid configuration (but settable - hope it isn't set) */
240 if (snd_cmi8328_cfg_read(port, CFG1) == 0xff)
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)
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 */
250 if (irq[ndev] == SNDRV_AUTO_IRQ) {
251 irq[ndev] = snd_legacy_find_free_irq(irqs);
253 snd_printk(KERN_ERR "unable to find a free IRQ\n");
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");
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");
271 /* configure WSS IRQ... */
272 pos = array_find(irqs, irq[ndev]);
274 snd_printk(KERN_ERR "invalid IRQ %d\n", irq[ndev]);
277 val = irq_bits[pos] << 3;
279 pos = array_find(dma1s, dma1[ndev]);
281 snd_printk(KERN_ERR "invalid DMA1 %d\n", dma1[ndev]);
284 val |= dma_bits[pos];
286 if (dma2[ndev] >= 0 && dma1[ndev] != dma2[ndev]) {
287 pos = array_find(dma2s[dma1[ndev]], dma2[ndev]);
289 snd_printk(KERN_ERR "invalid DMA2 %d\n", dma2[ndev]);
292 val |= 0x04; /* enable separate capture DMA */
296 err = snd_card_create(index[ndev], id[ndev], THIS_MODULE,
297 sizeof(struct snd_cmi8328), &card);
300 cmi = card->private_data;
304 snd_card_set_dev(card, pdev);
306 err = snd_wss_create(card, port + 4, -1, irq[ndev], dma1[ndev],
307 dma2[ndev], WSS_HW_DETECT, 0, &cmi->wss);
311 err = snd_wss_pcm(cmi->wss, 0, NULL);
315 err = snd_wss_mixer(cmi->wss);
318 err = snd_cmi8328_mixer(cmi->wss);
322 if (snd_wss_timer(cmi->wss, 0, NULL) < 0)
323 snd_printk(KERN_WARNING "error initializing WSS timer\n");
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");
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");
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]);
340 snd_printk(KERN_WARNING "invalid MPU401 port 0x%lx\n",
343 val |= mpu_port_bits[pos] << 5;
344 pos = array_find(mpu_irqs, mpuirq[ndev]);
346 snd_printk(KERN_WARNING "invalid MPU401 IRQ %d\n",
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");
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");
362 if (snd_opl3_hwdep_new(opl3, 0, 1, NULL) < 0)
363 snd_printk(KERN_WARNING "error initializing OPL3 hwdep\n");
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]);
371 dev_set_drvdata(pdev, card);
372 err = snd_card_register(card);
375 #ifdef SUPPORT_JOYSTICK
378 /* gameport is hardwired to 0x200 */
379 res = request_region(0x200, 8, "CMI8328 gameport");
381 snd_printk(KERN_WARNING "unable to allocate gameport I/O port\n");
383 struct gameport *gp = cmi->gameport = gameport_allocate_port();
385 release_and_free_resource(res);
387 gameport_set_name(gp, "CMI8328 Gameport");
388 gameport_set_phys(gp, "%s/gameport0", dev_name(pdev));
389 gameport_set_dev_parent(gp, pdev);
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);
406 static int snd_cmi8328_remove(struct device *pdev, unsigned int dev)
408 struct snd_card *card = dev_get_drvdata(pdev);
409 struct snd_cmi8328 *cmi = card->private_data;
411 #ifdef SUPPORT_JOYSTICK
413 struct resource *res = gameport_get_port_data(cmi->gameport);
414 gameport_unregister_port(cmi->gameport);
415 release_and_free_resource(res);
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);
427 static int snd_cmi8328_suspend(struct device *pdev, unsigned int n,
430 struct snd_card *card = dev_get_drvdata(pdev);
431 struct snd_cmi8328 *cmi;
433 if (!card) /* ignore absent devices */
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 snd_pcm_suspend_all(cmi->wss->pcm);
439 cmi->wss->suspend(cmi->wss);
444 static int snd_cmi8328_resume(struct device *pdev, unsigned int n)
446 struct snd_card *card = dev_get_drvdata(pdev);
447 struct snd_cmi8328 *cmi;
449 if (!card) /* ignore absent devices */
451 cmi = card->private_data;
452 snd_cmi8328_cfg_restore(cmi->port, cmi->cfg);
453 outb(cmi->wss_cfg, cmi->port);
454 cmi->wss->resume(cmi->wss);
455 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
461 static struct isa_driver snd_cmi8328_driver = {
462 .probe = snd_cmi8328_probe,
463 .remove = snd_cmi8328_remove,
465 .suspend = snd_cmi8328_suspend,
466 .resume = snd_cmi8328_resume,
473 static int __init alsa_card_cmi8328_init(void)
475 return isa_register_driver(&snd_cmi8328_driver, CMI8328_MAX);
478 static void __exit alsa_card_cmi8328_exit(void)
480 isa_unregister_driver(&snd_cmi8328_driver);
483 module_init(alsa_card_cmi8328_init)
484 module_exit(alsa_card_cmi8328_exit)