Hello,
this patch introduces snd-cmi8328 driver for C-Media CMI8328-based sound
cards, such as AudioExcel AV500.
It supports PCM playback and capture (full-duplex) through wss_lib, gameport,
OPL3 and MPU401. The AV500 card has onboard Dream wavetable synth connected
to the MPU401 port and Aux 1 input internally which works too.
The CDROM interface is not supported (as the drivers for these CDROMs were
removed from the kernel some time ago).
snd_legacy_find_free_ioport() function is present in a couple of ISA sound
drivers so perhaps it should be moved to sound/initval.h
diff --git a/sound/isa/Kconfig b/sound/isa/Kconfig
index 52064cf..a38d964 100644
--- a/sound/isa/Kconfig
+++ b/sound/isa/Kconfig
@@ -117,6 +117,18 @@ config SND_AZT2320
To compile this driver as a module, choose M here: the module
will be called snd-azt2320.
+config SND_CMI8328
+ tristate "C-Media CMI8328"
+ select SND_WSS_LIB
+ select SND_OPL3_LIB
+ select SND_MPU401_UART
+ help
+ Say Y here to include support for soundcards based on the
+ C-Media CMI8328 chip.
+
+ To compile this driver as a module, choose M here: the module
+ will be called snd-cmi8328.
+
config SND_CMI8330
tristate "C-Media CMI8330"
select SND_WSS_LIB
diff --git a/sound/isa/Makefile b/sound/isa/Makefile
index 8d781e4..9a15f14 100644
--- a/sound/isa/Makefile
+++ b/sound/isa/Makefile
@@ -6,6 +6,7 @@
snd-adlib-objs := adlib.o
snd-als100-objs := als100.o
snd-azt2320-objs := azt2320.o
+snd-cmi8328-objs := cmi8328.o
snd-cmi8330-objs := cmi8330.o
snd-es18xx-objs := es18xx.o
snd-opl3sa2-objs := opl3sa2.o
@@ -16,6 +17,7 @@ snd-sscape-objs := sscape.o
obj-$(CONFIG_SND_ADLIB) += snd-adlib.o
obj-$(CONFIG_SND_ALS100) += snd-als100.o
obj-$(CONFIG_SND_AZT2320) += snd-azt2320.o
+obj-$(CONFIG_SND_CMI8328) += snd-cmi8328.o
obj-$(CONFIG_SND_CMI8330) += snd-cmi8330.o
obj-$(CONFIG_SND_ES18XX) += snd-es18xx.o
obj-$(CONFIG_SND_OPL3SA2) += snd-opl3sa2.o
diff --git a/sound/isa/cmi8328.c b/sound/isa/cmi8328.c
new file mode 100644
index 0000000..2691116
--- /dev/null
+++ b/sound/isa/cmi8328.c
@@ -0,0 +1,482 @@
+/*
+ * 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_IRQ
+#define SNDRV_LEGACY_FIND_FREE_DMA
+#include <sound/initval.h>
+
+MODULE_AUTHOR("Ondrej Zary <linux(a)rainbow-software.org>");
+MODULE_DESCRIPTION("C-Media CMI8328");
+MODULE_LICENSE("GPL");
+
+#if defined(CONFIG_GAMEPORT) || defined(CONFIG_GAMEPORT_MODULE)
+#define SUPPORT_JOYSTICK 1
+#endif
+
+/* I/O port is configured by jumpers on the card to one of these */
+static int cmi8328_ports[] = { 0x530, 0xe80, 0xf40, 0x604 };
+#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_array(port, long, NULL, 0444);
+MODULE_PARM_DESC(port, "Port # for CMI8328 driver.");
+module_param_array(irq, int, NULL, 0444);
+MODULE_PARM_DESC(irq, "IRQ # for CMI8328 driver.");
+module_param_array(dma1, int, NULL, 0444);
+MODULE_PARM_DESC(dma1, "DMA1 for CMI8328 driver.");
+module_param_array(dma2, int, NULL, 0444);
+MODULE_PARM_DESC(dma2, "DMA2 for CMI8328 driver.");
+
+module_param_array(mpuport, long, NULL, 0444);
+MODULE_PARM_DESC(mpuport, "MPU-401 port # for CMI8328 driver.");
+module_param_array(mpuirq, int, 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
+};
+
+static int __devinit snd_legacy_find_free_ioport(int *port_table, int size)
+{
+ while (*port_table != -1) {
+ if (request_region(*port_table, size, "ALSA test")) {
+ release_region(*port_table, size);
+ return *port_table;
+ }
+ port_table++;
+ }
+ return -1;
+}
+
+/* CMI8328 configuration registers */
+#define CFG1 0x61
+#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=0x220, 1=0x240
+ */
+#define CFG2 0x62
+#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=0x300, 001=0x310, 010=0x320, 011=0x330, 100=0x332,
+ 101=0x334, 110=0x336
+ */
+#define CFG3 0x63
+/*
+ * 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=0x300, 001=0x310, 010=0x320, 011=0x330, 100=0x340,
+ 101=0x350, 110=0x360, 111=0x370
+ */
+
+static u8 snd_cmi8328_cfg_read(u16 port, u8 reg)
+{
+ outb(0x43, port + 3);
+ outb(0x21, port + 3);
+ outb(reg, port + 3);
+ return inb(port);
+}
+
+static void snd_cmi8328_cfg_write(u16 port, u8 reg, u8 val)
+{
+ outb(0x43, port + 3);
+ outb(0x21, port + 3);
+ outb(reg, port + 3);
+ outb(val, port + 3); /* yes, value goes to the same port as index */
+}
+
+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]);
+}
+
+static int __devinit 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 */
+ strcpy(id1.name, "Aux Playback Switch");
+ strcpy(id2.name, "CD Playback Switch");
+ err = snd_ctl_rename_id(card, &id1, &id2);
+ if (err < 0) {
+ snd_printk(KERN_ERR "error renaming control\n");
+ return err;
+ }
+ /* rename AUX0 volume to CD */
+ strcpy(id1.name, "Aux Playback Volume");
+ strcpy(id2.name, "CD Playback Volume");
+ err = snd_ctl_rename_id(card, &id1, &id2);
+ if (err < 0) {
+ snd_printk(KERN_ERR "error renaming control\n");
+ return err;
+ }
+ /* rename AUX1 switch to Synth */
+ strcpy(id1.name, "Aux Playback Switch");
+ id1.index = 1;
+ strcpy(id2.name, "Synth Playback Switch");
+ err = snd_ctl_rename_id(card, &id1, &id2);
+ if (err < 0) {
+ snd_printk(KERN_ERR "error renaming control\n");
+ return err;
+ }
+ /* rename AUX1 volume to Synth */
+ strcpy(id1.name, "Aux Playback Volume");
+ id1.index = 1;
+ strcpy(id2.name, "Synth Playback Volume");
+ err = snd_ctl_rename_id(card, &id1, &id2);
+ if (err < 0) {
+ snd_printk(KERN_ERR "error renaming control\n");
+ return err;
+ }
+
+ return 0;
+}
+
+/* find index of an item in "-1"-ended array */
+int array_find(int array[], int item)
+{
+ int i;
+
+ for (i = 0; array[i] != -1; i++)
+ if (array[i] == item)
+ return i;
+
+ return -1;
+}
+
+static int __devinit 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 int mpu_ports[] = { 0x330, 0x300, 0x310, 0x320, 0x332, 0x334,
+ 0x336, -1 };
+ static u8 mpu_port_bits[] = { 3, 0, 1, 2, 4, 5, 6 };
+ static int mpu_irqs[] = { 9, 7, 5, 3, -1 };
+ static u8 mpu_irq_bits[] = { 3, 2, 1, 0 };
+ static int irqs[] = { 9, 10, 11, 7, -1 };
+ static u8 irq_bits[] = { 2, 3, 4, 1 };
+ static int dma1s[] = { 3, 1, 0, -1 };
+ static u8 dma_bits[] = { 3, 2, 1 };
+ static 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) == 0xff)
+ 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) {
+ snd_printk(KERN_ERR "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) {
+ snd_printk(KERN_ERR "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) {
+ snd_printk(KERN_WARNING "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) {
+ snd_printk(KERN_ERR "invalid IRQ %d\n", irq[ndev]);
+ return -EINVAL;
+ }
+ val = irq_bits[pos] << 3;
+ /* ...and DMA... */
+ pos = array_find(dma1s, dma1[ndev]);
+ if (pos < 0) {
+ snd_printk(KERN_ERR "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) {
+ snd_printk(KERN_ERR "invalid DMA2 %d\n", dma2[ndev]);
+ return -EINVAL;
+ }
+ val |= 0x04; /* enable separate capture DMA */
+ }
+ outb(val, port);
+
+ err = snd_card_create(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;
+ snd_card_set_dev(card, pdev);
+
+ err = snd_wss_create(card, port + 4, -1, irq[ndev], dma1[ndev],
+ dma2[ndev], WSS_HW_DETECT, 0, &cmi->wss);
+ if (err < 0)
+ goto error;
+
+ err = snd_wss_pcm(cmi->wss, 0, NULL);
+ if (err < 0)
+ goto error;
+
+ err = snd_wss_mixer(cmi->wss);
+ if (err < 0)
+ goto error;
+ err = snd_cmi8328_mixer(cmi->wss);
+ if (err < 0)
+ goto error;
+
+ if (snd_wss_timer(cmi->wss, 0, NULL) < 0)
+ snd_printk(KERN_WARNING "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)
+ snd_printk(KERN_ERR "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)
+ snd_printk(KERN_ERR "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(mpu_ports, mpuport[ndev]);
+ if (pos < 0)
+ snd_printk(KERN_WARNING "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)
+ snd_printk(KERN_WARNING "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)
+ snd_printk(KERN_ERR "error initializing MPU401\n");
+ }
+ }
+ }
+ /* OPL3 is hardwired to 0x388 and cannot be disabled */
+ if (snd_opl3_create(card, 0x388, 0x38a, OPL3_HW_AUTO, 0, &opl3) < 0)
+ snd_printk(KERN_ERR "error initializing OPL3\n");
+ else
+ if (snd_opl3_hwdep_new(opl3, 0, 1, NULL) < 0)
+ snd_printk(KERN_WARNING "error initializing OPL3 hwdep\n");
+
+ strcpy(card->driver, "CMI8328");
+ strcpy(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)
+ goto error;
+#ifdef SUPPORT_JOYSTICK
+ if (!gameport[ndev])
+ return 0;
+ /* gameport is hardwired to 0x200 */
+ res = request_region(0x200, 8, "CMI8328 gameport");
+ if (!res)
+ snd_printk(KERN_WARNING "unable to allocate gameport I/O port\n");
+ else {
+ struct gameport *gp = cmi->gameport = gameport_allocate_port();
+ if (!cmi->gameport)
+ release_and_free_resource(res);
+ else {
+ gameport_set_name(gp, "CMI8328 Gameport");
+ gameport_set_phys(gp, "%s/gameport0", dev_name(pdev));
+ gameport_set_dev_parent(gp, pdev);
+ gp->io = 0x200;
+ gameport_set_port_data(gp, res);
+ /* Enable gameport */
+ snd_cmi8328_cfg_write(port, CFG1,
+ CFG1_SB_DISABLE | CFG1_GAMEPORT);
+ gameport_register_port(gp);
+ }
+ }
+#endif
+ return 0;
+error:
+ snd_card_free(card);
+
+ return err;
+}
+
+static int __devexit snd_cmi8328_remove(struct device *pdev, unsigned int dev)
+{
+ struct snd_card *card = dev_get_drvdata(pdev);
+#ifdef SUPPORT_JOYSTICK
+ struct snd_cmi8328 *cmi = card->private_data;
+ if (cmi->gameport) {
+ struct resource *res = gameport_get_port_data(cmi->gameport);
+ gameport_unregister_port(cmi->gameport);
+ release_and_free_resource(res);
+ }
+#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);
+ snd_card_free(card);
+ dev_set_drvdata(pdev, NULL);
+ return 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);
+ snd_pcm_suspend_all(cmi->wss->pcm);
+ 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 = __devexit_p(snd_cmi8328_remove),
+#ifdef CONFIG_PM
+ .suspend = snd_cmi8328_suspend,
+ .resume = snd_cmi8328_resume,
+#endif
+ .driver = {
+ .name = "cmi8328"
+ },
+};
+
+static int __init alsa_card_cmi8328_init(void)
+{
+ return isa_register_driver(&snd_cmi8328_driver, CMI8328_MAX);
+}
+
+static void __exit alsa_card_cmi8328_exit(void)
+{
+ isa_unregister_driver(&snd_cmi8328_driver);
+}
+
+module_init(alsa_card_cmi8328_init)
+module_exit(alsa_card_cmi8328_exit)
--
Ondrej Zary
