summaryrefslogtreecommitdiffstats
path: root/sound/oss/opl3sa.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/oss/opl3sa.c')
-rw-r--r--sound/oss/opl3sa.c329
1 files changed, 329 insertions, 0 deletions
diff --git a/sound/oss/opl3sa.c b/sound/oss/opl3sa.c
new file mode 100644
index 0000000..fe4907c
--- /dev/null
+++ b/sound/oss/opl3sa.c
@@ -0,0 +1,329 @@
+/*
+ * sound/opl3sa.c
+ *
+ * Low level driver for Yamaha YMF701B aka OPL3-SA chip
+ *
+ *
+ *
+ * Copyright (C) by Hannu Savolainen 1993-1997
+ *
+ * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
+ * Version 2 (June 1991). See the "COPYING" file distributed with this software
+ * for more info.
+ *
+ * Changes:
+ * Alan Cox Modularisation
+ * Christoph Hellwig Adapted to module_init/module_exit
+ * Arnaldo C. de Melo got rid of attach_uart401
+ *
+ * FIXME:
+ * Check for install of mpu etc is wrong, should check result of the mss stuff
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+
+#undef SB_OK
+
+#include "sound_config.h"
+
+#include "ad1848.h"
+#include "mpu401.h"
+
+#ifdef SB_OK
+#include "sb.h"
+static int sb_initialized;
+#endif
+
+static DEFINE_SPINLOCK(lock);
+
+static unsigned char opl3sa_read(int addr)
+{
+ unsigned long flags;
+ unsigned char tmp;
+
+ spin_lock_irqsave(&lock,flags);
+ outb((0x1d), 0xf86); /* password */
+ outb(((unsigned char) addr), 0xf86); /* address */
+ tmp = inb(0xf87); /* data */
+ spin_unlock_irqrestore(&lock,flags);
+
+ return tmp;
+}
+
+static void opl3sa_write(int addr, int data)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&lock,flags);
+ outb((0x1d), 0xf86); /* password */
+ outb(((unsigned char) addr), 0xf86); /* address */
+ outb(((unsigned char) data), 0xf87); /* data */
+ spin_unlock_irqrestore(&lock,flags);
+}
+
+static int __init opl3sa_detect(void)
+{
+ int tmp;
+
+ if (((tmp = opl3sa_read(0x01)) & 0xc4) != 0x04)
+ {
+ DDB(printk("OPL3-SA detect error 1 (%x)\n", opl3sa_read(0x01)));
+ /* return 0; */
+ }
+
+ /*
+ * Check that the password feature has any effect
+ */
+
+ if (inb(0xf87) == tmp)
+ {
+ DDB(printk("OPL3-SA detect failed 2 (%x/%x)\n", tmp, inb(0xf87)));
+ return 0;
+ }
+ tmp = (opl3sa_read(0x04) & 0xe0) >> 5;
+
+ if (tmp != 0 && tmp != 1)
+ {
+ DDB(printk("OPL3-SA detect failed 3 (%d)\n", tmp));
+ return 0;
+ }
+ DDB(printk("OPL3-SA mode %x detected\n", tmp));
+
+ opl3sa_write(0x01, 0x00); /* Disable MSS */
+ opl3sa_write(0x02, 0x00); /* Disable SB */
+ opl3sa_write(0x03, 0x00); /* Disable MPU */
+
+ return 1;
+}
+
+/*
+ * Probe and attach routines for the Windows Sound System mode of
+ * OPL3-SA
+ */
+
+static int __init probe_opl3sa_wss(struct address_info *hw_config, struct resource *ports)
+{
+ unsigned char tmp = 0x24; /* WSS enable */
+
+ /*
+ * Check if the IO port returns valid signature. The original MS Sound
+ * system returns 0x04 while some cards (OPL3-SA for example)
+ * return 0x00.
+ */
+
+ if (!opl3sa_detect())
+ {
+ printk(KERN_ERR "OSS: OPL3-SA chip not found\n");
+ return 0;
+ }
+
+ switch (hw_config->io_base)
+ {
+ case 0x530:
+ tmp |= 0x00;
+ break;
+ case 0xe80:
+ tmp |= 0x08;
+ break;
+ case 0xf40:
+ tmp |= 0x10;
+ break;
+ case 0x604:
+ tmp |= 0x18;
+ break;
+ default:
+ printk(KERN_ERR "OSS: Unsupported OPL3-SA/WSS base %x\n", hw_config->io_base);
+ return 0;
+ }
+
+ opl3sa_write(0x01, tmp); /* WSS setup register */
+
+ return probe_ms_sound(hw_config, ports);
+}
+
+static void __init attach_opl3sa_wss(struct address_info *hw_config, struct resource *ports)
+{
+ int nm = num_mixers;
+
+ /* FIXME */
+ attach_ms_sound(hw_config, ports, THIS_MODULE);
+ if (num_mixers > nm) /* A mixer was installed */
+ {
+ AD1848_REROUTE(SOUND_MIXER_LINE1, SOUND_MIXER_CD);
+ AD1848_REROUTE(SOUND_MIXER_LINE2, SOUND_MIXER_SYNTH);
+ AD1848_REROUTE(SOUND_MIXER_LINE3, SOUND_MIXER_LINE);
+ }
+}
+
+
+static int __init probe_opl3sa_mpu(struct address_info *hw_config)
+{
+ unsigned char conf;
+ static signed char irq_bits[] = {
+ -1, -1, -1, -1, -1, 1, -1, 2, -1, 3, 4
+ };
+
+ if (hw_config->irq > 10)
+ {
+ printk(KERN_ERR "OPL3-SA: Bad MPU IRQ %d\n", hw_config->irq);
+ return 0;
+ }
+ if (irq_bits[hw_config->irq] == -1)
+ {
+ printk(KERN_ERR "OPL3-SA: Bad MPU IRQ %d\n", hw_config->irq);
+ return 0;
+ }
+ switch (hw_config->io_base)
+ {
+ case 0x330:
+ conf = 0x00;
+ break;
+ case 0x332:
+ conf = 0x20;
+ break;
+ case 0x334:
+ conf = 0x40;
+ break;
+ case 0x300:
+ conf = 0x60;
+ break;
+ default:
+ return 0; /* Invalid port */
+ }
+
+ conf |= 0x83; /* MPU & OPL3 (synth) & game port enable */
+ conf |= irq_bits[hw_config->irq] << 2;
+
+ opl3sa_write(0x03, conf);
+
+ hw_config->name = "OPL3-SA (MPU401)";
+
+ return probe_uart401(hw_config, THIS_MODULE);
+}
+
+static void __exit unload_opl3sa_wss(struct address_info *hw_config)
+{
+ int dma2 = hw_config->dma2;
+
+ if (dma2 == -1)
+ dma2 = hw_config->dma;
+
+ release_region(0xf86, 2);
+ release_region(hw_config->io_base, 4);
+
+ ad1848_unload(hw_config->io_base + 4,
+ hw_config->irq,
+ hw_config->dma,
+ dma2,
+ 0);
+ sound_unload_audiodev(hw_config->slots[0]);
+}
+
+static inline void __exit unload_opl3sa_mpu(struct address_info *hw_config)
+{
+ unload_uart401(hw_config);
+}
+
+#ifdef SB_OK
+static inline void __exit unload_opl3sa_sb(struct address_info *hw_config)
+{
+ sb_dsp_unload(hw_config);
+}
+#endif
+
+static int found_mpu;
+
+static struct address_info cfg;
+static struct address_info cfg_mpu;
+
+static int __initdata io = -1;
+static int __initdata irq = -1;
+static int __initdata dma = -1;
+static int __initdata dma2 = -1;
+static int __initdata mpu_io = -1;
+static int __initdata mpu_irq = -1;
+
+module_param(io, int, 0);
+module_param(irq, int, 0);
+module_param(dma, int, 0);
+module_param(dma2, int, 0);
+module_param(mpu_io, int, 0);
+module_param(mpu_irq, int, 0);
+
+static int __init init_opl3sa(void)
+{
+ struct resource *ports;
+ if (io == -1 || irq == -1 || dma == -1) {
+ printk(KERN_ERR "opl3sa: dma, irq and io must be set.\n");
+ return -EINVAL;
+ }
+
+ cfg.io_base = io;
+ cfg.irq = irq;
+ cfg.dma = dma;
+ cfg.dma2 = dma2;
+
+ cfg_mpu.io_base = mpu_io;
+ cfg_mpu.irq = mpu_irq;
+
+ ports = request_region(io + 4, 4, "ad1848");
+ if (!ports)
+ return -EBUSY;
+
+ if (!request_region(0xf86, 2, "OPL3-SA"))/* Control port is busy */ {
+ release_region(io + 4, 4);
+ return 0;
+ }
+
+ if (!request_region(io, 4, "WSS config")) {
+ release_region(0x86, 2);
+ release_region(io + 4, 4);
+ return 0;
+ }
+
+ if (probe_opl3sa_wss(&cfg, ports) == 0) {
+ release_region(0xf86, 2);
+ release_region(io, 4);
+ release_region(io + 4, 4);
+ return -ENODEV;
+ }
+
+ found_mpu=probe_opl3sa_mpu(&cfg_mpu);
+
+ attach_opl3sa_wss(&cfg, ports);
+ return 0;
+}
+
+static void __exit cleanup_opl3sa(void)
+{
+ if(found_mpu)
+ unload_opl3sa_mpu(&cfg_mpu);
+ unload_opl3sa_wss(&cfg);
+}
+
+module_init(init_opl3sa);
+module_exit(cleanup_opl3sa);
+
+#ifndef MODULE
+static int __init setup_opl3sa(char *str)
+{
+ /* io, irq, dma, dma2, mpu_io, mpu_irq */
+ int ints[7];
+
+ str = get_options(str, ARRAY_SIZE(ints), ints);
+
+ io = ints[1];
+ irq = ints[2];
+ dma = ints[3];
+ dma2 = ints[4];
+ mpu_io = ints[5];
+ mpu_irq = ints[6];
+
+ return 1;
+}
+
+__setup("opl3sa=", setup_opl3sa);
+#endif
+MODULE_LICENSE("GPL");
OpenPOWER on IntegriCloud