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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /sound/oss/opl3sa.c | |
download | linux-fsl-qoriq-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
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!
Diffstat (limited to 'sound/oss/opl3sa.c')
-rw-r--r-- | sound/oss/opl3sa.c | 329 |
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"); |