// SPDX-License-Identifier: GPL-2.0-only
/*
* Driver for C - Media CMI8328 - based soundcards , such as AudioExcel AV500
* Copyright ( c ) 2012 Ondrej Zary
*
* AudioExcel AV500 card consists of :
* - CMI8328 - main chip ( SB Pro emulation , gameport , OPL3 , MPU401 , CD - ROM )
* - CS4231A - WSS codec
* - Dream SAM9233 + GMS950400 + RAM + ROM : Wavetable MIDI , connected to MPU401
*/
#include <linux/init.h>
#include <linux/isa.h>
#include <linux/module.h>
#include <linux/gameport.h>
#include <asm /dma.h>
#include <sound/core.h>
#include <sound/wss.h>
#include <sound/opl3.h>
#include <sound/mpu401.h>
#define SNDRV_LEGACY_FIND_FREE_IOPORT
#define SNDRV_LEGACY_FIND_FREE_IRQ
#define SNDRV_LEGACY_FIND_FREE_DMA
#include <sound/initval.h>
MODULE_AUTHOR("Ondrej Zary <linux@rainbow-software.org>" );
MODULE_DESCRIPTION("C-Media CMI8328" );
MODULE_LICENSE("GPL" );
#if IS_ENABLED(CONFIG_GAMEPORT)
#define SUPPORT_JOYSTICK 1
#endif
/* I/O port is configured by jumpers on the card to one of these */
static const int cmi8328_ports[] = { 0 x530, 0 xe80, 0 xf40, 0 x604 };
#define CMI8328_MAX ARRAY_SIZE(cmi8328_ports)
static int index[CMI8328_MAX] = {[0 ... (CMI8328_MAX-1 )] = -1 };
static char *id[CMI8328_MAX] = {[0 ... (CMI8328_MAX-1 )] = NULL};
static long port[CMI8328_MAX] = {[0 ... (CMI8328_MAX-1 )] = SNDRV_AUTO_PORT};
static int irq[CMI8328_MAX] = {[0 ... (CMI8328_MAX-1 )] = SNDRV_AUTO_IRQ};
static int dma1[CMI8328_MAX] = {[0 ... (CMI8328_MAX-1 )] = SNDRV_AUTO_DMA};
static int dma2[CMI8328_MAX] = {[0 ... (CMI8328_MAX-1 )] = SNDRV_AUTO_DMA};
static long mpuport[CMI8328_MAX] = {[0 ... (CMI8328_MAX-1 )] = SNDRV_AUTO_PORT};
static int mpuirq[CMI8328_MAX] = {[0 ... (CMI8328_MAX-1 )] = SNDRV_AUTO_IRQ};
#ifdef SUPPORT_JOYSTICK
static bool gameport[CMI8328_MAX] = {[0 ... (CMI8328_MAX-1 )] = true };
#endif
module_param_array(index, int , NULL, 0444 );
MODULE_PARM_DESC(index, "Index value for CMI8328 soundcard." );
module_param_array(id, charp, NULL, 0444 );
MODULE_PARM_DESC(id, "ID string for CMI8328 soundcard." );
module_param_hw_array(port, long , ioport, NULL, 0444 );
MODULE_PARM_DESC(port, "Port # for CMI8328 driver." );
module_param_hw_array(irq, int , irq, NULL, 0444 );
MODULE_PARM_DESC(irq, "IRQ # for CMI8328 driver." );
module_param_hw_array(dma1, int , dma, NULL, 0444 );
MODULE_PARM_DESC(dma1, "DMA1 for CMI8328 driver." );
module_param_hw_array(dma2, int , dma, NULL, 0444 );
MODULE_PARM_DESC(dma2, "DMA2 for CMI8328 driver." );
module_param_hw_array(mpuport, long , ioport, NULL, 0444 );
MODULE_PARM_DESC(mpuport, "MPU-401 port # for CMI8328 driver." );
module_param_hw_array(mpuirq, int , irq, NULL, 0444 );
MODULE_PARM_DESC(mpuirq, "IRQ # for CMI8328 MPU-401 port." );
#ifdef SUPPORT_JOYSTICK
module_param_array(gameport, bool , NULL, 0444 );
MODULE_PARM_DESC(gameport, "Enable gameport." );
#endif
struct snd_cmi8328 {
u16 port;
u8 cfg[3 ];
u8 wss_cfg;
struct snd_card *card;
struct snd_wss *wss;
#ifdef SUPPORT_JOYSTICK
struct gameport *gameport;
#endif
};
/* CMI8328 configuration registers */
#define CFG1 0 x61
#define CFG1_SB_DISABLE (1 << 0 )
#define CFG1_GAMEPORT (1 << 1 )
/*
* bit 0 : SB : 0 = enabled , 1 = disabled
* bit 1 : gameport : 0 = disabled , 1 = enabled
* bits 2 - 4 : SB IRQ : 001 = 3 , 010 = 5 , 011 = 7 , 100 = 9 , 101 = 10 , 110 = 11
* bits 5 - 6 : SB DMA : 00 = disabled ( when SB disabled ) , 01 = DMA0 , 10 = DMA1 , 11 = DMA3
* bit 7 : SB port : 0 = 0 x220 , 1 = 0 x240
*/
#define CFG2 0 x62
#define CFG2_MPU_ENABLE (1 << 2 )
/*
* bits 0 - 1 : CD - ROM mode : 00 = disabled , 01 = Panasonic , 10 = Sony / Mitsumi / Wearnes ,
11 = IDE
* bit 2 : MPU401 : 0 = disabled , 1 = enabled
* bits 3 - 4 : MPU401 IRQ : 00 = 3 , 01 = 5 , 10 = 7 , 11 = 9 ,
* bits 5 - 7 : MPU401 port : 000 = 0 x300 , 001 = 0 x310 , 010 = 0 x320 , 011 = 0 x330 , 100 = 0 x332 ,
101 = 0 x334 , 110 = 0 x336
*/
#define CFG3 0 x63
/*
* bits 0 - 2 : CD - ROM IRQ : 000 = disabled , 001 = 3 , 010 = 5 , 011 = 7 , 100 = 9 , 101 = 10 ,
110 = 11
* bits 3 - 4 : CD - ROM DMA : 00 = disabled , 01 = DMA0 , 10 = DMA1 , 11 = DMA3
* bits 5 - 7 : CD - ROM port : 000 = 0 x300 , 001 = 0 x310 , 010 = 0 x320 , 011 = 0 x330 , 100 = 0 x340 ,
101 = 0 x350 , 110 = 0 x360 , 111 = 0 x370
*/
static u8 snd_cmi8328_cfg_read(u16 port, u8 reg)
{
outb(0 x43, port + 3 );
outb(0 x21, port + 3 );
outb(reg, port + 3 );
return inb(port);
}
static void snd_cmi8328_cfg_write(u16 port, u8 reg, u8 val)
{
outb(0 x43, port + 3 );
outb(0 x21, port + 3 );
outb(reg, port + 3 );
outb(val, port + 3 ); /* yes, value goes to the same port as index */
}
#ifdef CONFIG_PM
static void snd_cmi8328_cfg_save(u16 port, u8 cfg[])
{
cfg[0 ] = snd_cmi8328_cfg_read(port, CFG1);
cfg[1 ] = snd_cmi8328_cfg_read(port, CFG2);
cfg[2 ] = snd_cmi8328_cfg_read(port, CFG3);
}
static void snd_cmi8328_cfg_restore(u16 port, u8 cfg[])
{
snd_cmi8328_cfg_write(port, CFG1, cfg[0 ]);
snd_cmi8328_cfg_write(port, CFG2, cfg[1 ]);
snd_cmi8328_cfg_write(port, CFG3, cfg[2 ]);
}
#endif /* CONFIG_PM */
static int snd_cmi8328_mixer(struct snd_wss *chip)
{
struct snd_card *card;
struct snd_ctl_elem_id id1, id2;
int err;
card = chip->card;
memset(&id1, 0 , sizeof (id1));
memset(&id2, 0 , sizeof (id2));
id1.iface = id2.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
/* rename AUX0 switch to CD */
strscpy(id1.name, "Aux Playback Switch" );
strscpy(id2.name, "CD Playback Switch" );
err = snd_ctl_rename_id(card, &id1, &id2);
if (err < 0 ) {
dev_err(card->dev, "error renaming control\n" );
return err;
}
/* rename AUX0 volume to CD */
strscpy(id1.name, "Aux Playback Volume" );
strscpy(id2.name, "CD Playback Volume" );
err = snd_ctl_rename_id(card, &id1, &id2);
if (err < 0 ) {
dev_err(card->dev, "error renaming control\n" );
return err;
}
/* rename AUX1 switch to Synth */
strscpy(id1.name, "Aux Playback Switch" );
id1.index = 1 ;
strscpy(id2.name, "Synth Playback Switch" );
err = snd_ctl_rename_id(card, &id1, &id2);
if (err < 0 ) {
dev_err(card->dev, "error renaming control\n" );
return err;
}
/* rename AUX1 volume to Synth */
strscpy(id1.name, "Aux Playback Volume" );
id1.index = 1 ;
strscpy(id2.name, "Synth Playback Volume" );
err = snd_ctl_rename_id(card, &id1, &id2);
if (err < 0 ) {
dev_err(card->dev, "error renaming control\n" );
return err;
}
return 0 ;
}
/* find index of an item in "-1"-ended array */
static int array_find(const int array[], int item)
{
int i;
for (i = 0 ; array[i] != -1 ; i++)
if (array[i] == item)
return i;
return -1 ;
}
/* the same for long */
static int array_find_l(const long array[], long item)
{
int i;
for (i = 0 ; array[i] != -1 ; i++)
if (array[i] == item)
return i;
return -1 ;
}
static int snd_cmi8328_probe(struct device *pdev, unsigned int ndev)
{
struct snd_card *card;
struct snd_opl3 *opl3;
struct snd_cmi8328 *cmi;
#ifdef SUPPORT_JOYSTICK
struct resource *res;
#endif
int err, pos;
static const long mpu_ports[] = { 0 x330, 0 x300, 0 x310, 0 x320, 0 x332, 0 x334,
0 x336, -1 };
static const u8 mpu_port_bits[] = { 3 , 0 , 1 , 2 , 4 , 5 , 6 };
static const int mpu_irqs[] = { 9 , 7 , 5 , 3 , -1 };
static const u8 mpu_irq_bits[] = { 3 , 2 , 1 , 0 };
static const int irqs[] = { 9 , 10 , 11 , 7 , -1 };
static const u8 irq_bits[] = { 2 , 3 , 4 , 1 };
static const int dma1s[] = { 3 , 1 , 0 , -1 };
static const u8 dma_bits[] = { 3 , 2 , 1 };
static const int dma2s[][2 ] = { {1 , -1 }, {0 , -1 }, {-1 , -1 }, {0 , -1 } };
u16 port = cmi8328_ports[ndev];
u8 val;
/* 0xff is invalid configuration (but settable - hope it isn't set) */
if (snd_cmi8328_cfg_read(port, CFG1) == 0 xff)
return -ENODEV;
/* the SB disable bit must NEVER EVER be cleared or the WSS dies */
snd_cmi8328_cfg_write(port, CFG1, CFG1_SB_DISABLE);
if (snd_cmi8328_cfg_read(port, CFG1) != CFG1_SB_DISABLE)
return -ENODEV;
/* disable everything first */
snd_cmi8328_cfg_write(port, CFG2, 0 ); /* disable CDROM and MPU401 */
snd_cmi8328_cfg_write(port, CFG3, 0 ); /* disable CDROM IRQ and DMA */
if (irq[ndev] == SNDRV_AUTO_IRQ) {
irq[ndev] = snd_legacy_find_free_irq(irqs);
if (irq[ndev] < 0 ) {
dev_err(pdev, "unable to find a free IRQ\n" );
return -EBUSY;
}
}
if (dma1[ndev] == SNDRV_AUTO_DMA) {
dma1[ndev] = snd_legacy_find_free_dma(dma1s);
if (dma1[ndev] < 0 ) {
dev_err(pdev, "unable to find a free DMA1\n" );
return -EBUSY;
}
}
if (dma2[ndev] == SNDRV_AUTO_DMA) {
dma2[ndev] = snd_legacy_find_free_dma(dma2s[dma1[ndev] % 4 ]);
if (dma2[ndev] < 0 ) {
dev_warn(pdev, "unable to find a free DMA2, full-duplex will not work\n" );
dma2[ndev] = -1 ;
}
}
/* configure WSS IRQ... */
pos = array_find(irqs, irq[ndev]);
if (pos < 0 ) {
dev_err(pdev, "invalid IRQ %d\n" , irq[ndev]);
return -EINVAL;
}
val = irq_bits[pos] << 3 ;
/* ...and DMA... */
pos = array_find(dma1s, dma1[ndev]);
if (pos < 0 ) {
dev_err(pdev, "invalid DMA1 %d\n" , dma1[ndev]);
return -EINVAL;
}
val |= dma_bits[pos];
/* ...and DMA2 */
if (dma2[ndev] >= 0 && dma1[ndev] != dma2[ndev]) {
pos = array_find(dma2s[dma1[ndev]], dma2[ndev]);
if (pos < 0 ) {
dev_err(pdev, "invalid DMA2 %d\n" , dma2[ndev]);
return -EINVAL;
}
val |= 0 x04; /* enable separate capture DMA */
}
outb(val, port);
err = snd_devm_card_new(pdev, index[ndev], id[ndev], THIS_MODULE,
sizeof (struct snd_cmi8328), &card);
if (err < 0 )
return err;
cmi = card->private_data;
cmi->card = card;
cmi->port = port;
cmi->wss_cfg = val;
err = snd_wss_create(card, port + 4 , -1 , irq[ndev], dma1[ndev],
dma2[ndev], WSS_HW_DETECT, 0 , &cmi->wss);
if (err < 0 )
return err;
err = snd_wss_pcm(cmi->wss, 0 );
if (err < 0 )
return err;
err = snd_wss_mixer(cmi->wss);
if (err < 0 )
return err;
err = snd_cmi8328_mixer(cmi->wss);
if (err < 0 )
return err;
if (snd_wss_timer(cmi->wss, 0 ) < 0 )
dev_warn(pdev, "error initializing WSS timer\n" );
if (mpuport[ndev] == SNDRV_AUTO_PORT) {
mpuport[ndev] = snd_legacy_find_free_ioport(mpu_ports, 2 );
if (mpuport[ndev] < 0 )
dev_err(pdev, "unable to find a free MPU401 port\n" );
}
if (mpuirq[ndev] == SNDRV_AUTO_IRQ) {
mpuirq[ndev] = snd_legacy_find_free_irq(mpu_irqs);
if (mpuirq[ndev] < 0 )
dev_err(pdev, "unable to find a free MPU401 IRQ\n" );
}
/* enable and configure MPU401 */
if (mpuport[ndev] > 0 && mpuirq[ndev] > 0 ) {
val = CFG2_MPU_ENABLE;
pos = array_find_l(mpu_ports, mpuport[ndev]);
if (pos < 0 )
dev_warn(pdev, "invalid MPU401 port 0x%lx\n" ,
mpuport[ndev]);
else {
val |= mpu_port_bits[pos] << 5 ;
pos = array_find(mpu_irqs, mpuirq[ndev]);
if (pos < 0 )
dev_warn(pdev, "invalid MPU401 IRQ %d\n" ,
mpuirq[ndev]);
else {
val |= mpu_irq_bits[pos] << 3 ;
snd_cmi8328_cfg_write(port, CFG2, val);
if (snd_mpu401_uart_new(card, 0 ,
MPU401_HW_MPU401, mpuport[ndev],
0 , mpuirq[ndev], NULL) < 0 )
dev_err(pdev, "error initializing MPU401\n" );
}
}
}
/* OPL3 is hardwired to 0x388 and cannot be disabled */
if (snd_opl3_create(card, 0 x388, 0 x38a, OPL3_HW_AUTO, 0 , &opl3) < 0 )
dev_err(pdev, "error initializing OPL3\n" );
else
if (snd_opl3_hwdep_new(opl3, 0 , 1 , NULL) < 0 )
dev_warn(pdev, "error initializing OPL3 hwdep\n" );
strscpy(card->driver, "CMI8328" );
strscpy(card->shortname, "C-Media CMI8328" );
sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d,%d" ,
card->shortname, cmi->wss->port, irq[ndev], dma1[ndev],
(dma2[ndev] >= 0 ) ? dma2[ndev] : dma1[ndev]);
dev_set_drvdata(pdev, card);
err = snd_card_register(card);
if (err < 0 )
return err;
#ifdef SUPPORT_JOYSTICK
if (!gameport[ndev])
return 0 ;
/* gameport is hardwired to 0x200 */
res = devm_request_region(pdev, 0 x200, 8 , "CMI8328 gameport" );
if (!res)
dev_warn(pdev, "unable to allocate gameport I/O port\n" );
else {
struct gameport *gp = cmi->gameport = gameport_allocate_port();
if (cmi->gameport) {
gameport_set_name(gp, "CMI8328 Gameport" );
gameport_set_phys(gp, "%s/gameport0" , dev_name(pdev));
gameport_set_dev_parent(gp, pdev);
gp->io = 0 x200;
/* Enable gameport */
snd_cmi8328_cfg_write(port, CFG1,
CFG1_SB_DISABLE | CFG1_GAMEPORT);
gameport_register_port(gp);
}
}
#endif
return 0 ;
}
static void snd_cmi8328_remove(struct device *pdev, unsigned int dev)
{
struct snd_card *card = dev_get_drvdata(pdev);
struct snd_cmi8328 *cmi = card->private_data;
#ifdef SUPPORT_JOYSTICK
if (cmi->gameport)
gameport_unregister_port(cmi->gameport);
#endif
/* disable everything */
snd_cmi8328_cfg_write(cmi->port, CFG1, CFG1_SB_DISABLE);
snd_cmi8328_cfg_write(cmi->port, CFG2, 0 );
snd_cmi8328_cfg_write(cmi->port, CFG3, 0 );
}
#ifdef CONFIG_PM
static int snd_cmi8328_suspend(struct device *pdev, unsigned int n,
pm_message_t state)
{
struct snd_card *card = dev_get_drvdata(pdev);
struct snd_cmi8328 *cmi;
if (!card) /* ignore absent devices */
return 0 ;
cmi = card->private_data;
snd_cmi8328_cfg_save(cmi->port, cmi->cfg);
snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
cmi->wss->suspend(cmi->wss);
return 0 ;
}
static int snd_cmi8328_resume(struct device *pdev, unsigned int n)
{
struct snd_card *card = dev_get_drvdata(pdev);
struct snd_cmi8328 *cmi;
if (!card) /* ignore absent devices */
return 0 ;
cmi = card->private_data;
snd_cmi8328_cfg_restore(cmi->port, cmi->cfg);
outb(cmi->wss_cfg, cmi->port);
cmi->wss->resume(cmi->wss);
snd_power_change_state(card, SNDRV_CTL_POWER_D0);
return 0 ;
}
#endif
static struct isa_driver snd_cmi8328_driver = {
.probe = snd_cmi8328_probe,
.remove = snd_cmi8328_remove,
#ifdef CONFIG_PM
.suspend = snd_cmi8328_suspend,
.resume = snd_cmi8328_resume,
#endif
.driver = {
.name = "cmi8328"
},
};
module_isa_driver(snd_cmi8328_driver, CMI8328_MAX);
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