Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
This commit is contained in:
Linus Torvalds
329
sound/oss/opl3sa.c
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329
sound/oss/opl3sa.c
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/*
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* sound/opl3sa.c
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*
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* Low level driver for Yamaha YMF701B aka OPL3-SA chip
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*
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*
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*
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* Copyright (C) by Hannu Savolainen 1993-1997
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*
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* OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
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* Version 2 (June 1991). See the "COPYING" file distributed with this software
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* for more info.
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*
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* Changes:
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* Alan Cox Modularisation
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* Christoph Hellwig Adapted to module_init/module_exit
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* Arnaldo C. de Melo got rid of attach_uart401
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*
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* FIXME:
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* Check for install of mpu etc is wrong, should check result of the mss stuff
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/spinlock.h>
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#undef SB_OK
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#include "sound_config.h"
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#include "ad1848.h"
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#include "mpu401.h"
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#ifdef SB_OK
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#include "sb.h"
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static int sb_initialized;
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#endif
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static DEFINE_SPINLOCK(lock);
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static unsigned char opl3sa_read(int addr)
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{
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unsigned long flags;
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unsigned char tmp;
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spin_lock_irqsave(&lock,flags);
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outb((0x1d), 0xf86); /* password */
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outb(((unsigned char) addr), 0xf86); /* address */
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tmp = inb(0xf87); /* data */
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spin_unlock_irqrestore(&lock,flags);
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return tmp;
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}
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static void opl3sa_write(int addr, int data)
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{
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unsigned long flags;
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spin_lock_irqsave(&lock,flags);
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outb((0x1d), 0xf86); /* password */
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outb(((unsigned char) addr), 0xf86); /* address */
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outb(((unsigned char) data), 0xf87); /* data */
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spin_unlock_irqrestore(&lock,flags);
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}
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static int __init opl3sa_detect(void)
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{
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int tmp;
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if (((tmp = opl3sa_read(0x01)) & 0xc4) != 0x04)
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{
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DDB(printk("OPL3-SA detect error 1 (%x)\n", opl3sa_read(0x01)));
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/* return 0; */
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}
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/*
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* Check that the password feature has any effect
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*/
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if (inb(0xf87) == tmp)
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{
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DDB(printk("OPL3-SA detect failed 2 (%x/%x)\n", tmp, inb(0xf87)));
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return 0;
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}
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tmp = (opl3sa_read(0x04) & 0xe0) >> 5;
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if (tmp != 0 && tmp != 1)
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{
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DDB(printk("OPL3-SA detect failed 3 (%d)\n", tmp));
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return 0;
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}
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DDB(printk("OPL3-SA mode %x detected\n", tmp));
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opl3sa_write(0x01, 0x00); /* Disable MSS */
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opl3sa_write(0x02, 0x00); /* Disable SB */
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opl3sa_write(0x03, 0x00); /* Disable MPU */
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return 1;
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}
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/*
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* Probe and attach routines for the Windows Sound System mode of
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* OPL3-SA
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*/
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static int __init probe_opl3sa_wss(struct address_info *hw_config, struct resource *ports)
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{
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unsigned char tmp = 0x24; /* WSS enable */
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/*
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* Check if the IO port returns valid signature. The original MS Sound
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* system returns 0x04 while some cards (OPL3-SA for example)
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* return 0x00.
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*/
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if (!opl3sa_detect())
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{
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printk(KERN_ERR "OSS: OPL3-SA chip not found\n");
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return 0;
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}
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switch (hw_config->io_base)
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{
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case 0x530:
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tmp |= 0x00;
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break;
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case 0xe80:
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tmp |= 0x08;
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break;
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case 0xf40:
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tmp |= 0x10;
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break;
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case 0x604:
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tmp |= 0x18;
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break;
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default:
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printk(KERN_ERR "OSS: Unsupported OPL3-SA/WSS base %x\n", hw_config->io_base);
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return 0;
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}
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opl3sa_write(0x01, tmp); /* WSS setup register */
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return probe_ms_sound(hw_config, ports);
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}
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static void __init attach_opl3sa_wss(struct address_info *hw_config, struct resource *ports)
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{
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int nm = num_mixers;
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/* FIXME */
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attach_ms_sound(hw_config, ports, THIS_MODULE);
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if (num_mixers > nm) /* A mixer was installed */
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{
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AD1848_REROUTE(SOUND_MIXER_LINE1, SOUND_MIXER_CD);
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AD1848_REROUTE(SOUND_MIXER_LINE2, SOUND_MIXER_SYNTH);
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AD1848_REROUTE(SOUND_MIXER_LINE3, SOUND_MIXER_LINE);
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}
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}
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static int __init probe_opl3sa_mpu(struct address_info *hw_config)
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{
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unsigned char conf;
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static signed char irq_bits[] = {
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-1, -1, -1, -1, -1, 1, -1, 2, -1, 3, 4
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};
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if (hw_config->irq > 10)
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{
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printk(KERN_ERR "OPL3-SA: Bad MPU IRQ %d\n", hw_config->irq);
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return 0;
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}
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if (irq_bits[hw_config->irq] == -1)
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{
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printk(KERN_ERR "OPL3-SA: Bad MPU IRQ %d\n", hw_config->irq);
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return 0;
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}
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switch (hw_config->io_base)
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{
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case 0x330:
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conf = 0x00;
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break;
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case 0x332:
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conf = 0x20;
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break;
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case 0x334:
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conf = 0x40;
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break;
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case 0x300:
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conf = 0x60;
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break;
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default:
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return 0; /* Invalid port */
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}
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conf |= 0x83; /* MPU & OPL3 (synth) & game port enable */
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conf |= irq_bits[hw_config->irq] << 2;
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opl3sa_write(0x03, conf);
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hw_config->name = "OPL3-SA (MPU401)";
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return probe_uart401(hw_config, THIS_MODULE);
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}
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static void __exit unload_opl3sa_wss(struct address_info *hw_config)
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{
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int dma2 = hw_config->dma2;
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if (dma2 == -1)
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dma2 = hw_config->dma;
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release_region(0xf86, 2);
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release_region(hw_config->io_base, 4);
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ad1848_unload(hw_config->io_base + 4,
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hw_config->irq,
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hw_config->dma,
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dma2,
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0);
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sound_unload_audiodev(hw_config->slots[0]);
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}
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static inline void __exit unload_opl3sa_mpu(struct address_info *hw_config)
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{
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unload_uart401(hw_config);
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}
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#ifdef SB_OK
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static inline void __exit unload_opl3sa_sb(struct address_info *hw_config)
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{
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sb_dsp_unload(hw_config);
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}
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#endif
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static int found_mpu;
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static struct address_info cfg;
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static struct address_info cfg_mpu;
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static int __initdata io = -1;
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static int __initdata irq = -1;
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static int __initdata dma = -1;
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static int __initdata dma2 = -1;
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static int __initdata mpu_io = -1;
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static int __initdata mpu_irq = -1;
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module_param(io, int, 0);
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module_param(irq, int, 0);
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module_param(dma, int, 0);
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module_param(dma2, int, 0);
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module_param(mpu_io, int, 0);
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module_param(mpu_irq, int, 0);
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static int __init init_opl3sa(void)
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{
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struct resource *ports;
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if (io == -1 || irq == -1 || dma == -1) {
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printk(KERN_ERR "opl3sa: dma, irq and io must be set.\n");
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return -EINVAL;
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}
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cfg.io_base = io;
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cfg.irq = irq;
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cfg.dma = dma;
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cfg.dma2 = dma2;
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cfg_mpu.io_base = mpu_io;
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cfg_mpu.irq = mpu_irq;
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ports = request_region(io + 4, 4, "ad1848");
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if (!ports)
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return -EBUSY;
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if (!request_region(0xf86, 2, "OPL3-SA"))/* Control port is busy */ {
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release_region(io + 4, 4);
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return 0;
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}
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if (!request_region(io, 4, "WSS config")) {
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release_region(0x86, 2);
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release_region(io + 4, 4);
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return 0;
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}
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if (probe_opl3sa_wss(&cfg, ports) == 0) {
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release_region(0xf86, 2);
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release_region(io, 4);
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release_region(io + 4, 4);
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return -ENODEV;
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}
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found_mpu=probe_opl3sa_mpu(&cfg_mpu);
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attach_opl3sa_wss(&cfg, ports);
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return 0;
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}
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static void __exit cleanup_opl3sa(void)
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{
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if(found_mpu)
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unload_opl3sa_mpu(&cfg_mpu);
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unload_opl3sa_wss(&cfg);
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}
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module_init(init_opl3sa);
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module_exit(cleanup_opl3sa);
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#ifndef MODULE
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static int __init setup_opl3sa(char *str)
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{
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/* io, irq, dma, dma2, mpu_io, mpu_irq */
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int ints[7];
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str = get_options(str, ARRAY_SIZE(ints), ints);
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io = ints[1];
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irq = ints[2];
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dma = ints[3];
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dma2 = ints[4];
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mpu_io = ints[5];
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mpu_irq = ints[6];
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return 1;
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}
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__setup("opl3sa=", setup_opl3sa);
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#endif
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MODULE_LICENSE("GPL");
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