1da177e4c3
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!
405 lines
11 KiB
C
405 lines
11 KiB
C
/*
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* Copyright (c) by Jaroslav Kysela <perex@suse.cz>
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* Creative Labs, Inc.
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* Routines for control of EMU10K1 chips
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*
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* BUGS:
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* --
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*
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* TODO:
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* --
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <sound/driver.h>
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#include <linux/time.h>
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#include <sound/core.h>
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#include <sound/emu10k1.h>
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unsigned int snd_emu10k1_ptr_read(emu10k1_t * emu, unsigned int reg, unsigned int chn)
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{
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unsigned long flags;
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unsigned int regptr, val;
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unsigned int mask;
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mask = emu->audigy ? A_PTR_ADDRESS_MASK : PTR_ADDRESS_MASK;
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regptr = ((reg << 16) & mask) | (chn & PTR_CHANNELNUM_MASK);
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if (reg & 0xff000000) {
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unsigned char size, offset;
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size = (reg >> 24) & 0x3f;
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offset = (reg >> 16) & 0x1f;
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mask = ((1 << size) - 1) << offset;
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spin_lock_irqsave(&emu->emu_lock, flags);
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outl(regptr, emu->port + PTR);
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val = inl(emu->port + DATA);
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spin_unlock_irqrestore(&emu->emu_lock, flags);
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return (val & mask) >> offset;
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} else {
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spin_lock_irqsave(&emu->emu_lock, flags);
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outl(regptr, emu->port + PTR);
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val = inl(emu->port + DATA);
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spin_unlock_irqrestore(&emu->emu_lock, flags);
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return val;
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}
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}
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void snd_emu10k1_ptr_write(emu10k1_t *emu, unsigned int reg, unsigned int chn, unsigned int data)
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{
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unsigned int regptr;
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unsigned long flags;
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unsigned int mask;
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mask = emu->audigy ? A_PTR_ADDRESS_MASK : PTR_ADDRESS_MASK;
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regptr = ((reg << 16) & mask) | (chn & PTR_CHANNELNUM_MASK);
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if (reg & 0xff000000) {
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unsigned char size, offset;
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size = (reg >> 24) & 0x3f;
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offset = (reg >> 16) & 0x1f;
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mask = ((1 << size) - 1) << offset;
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data = (data << offset) & mask;
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spin_lock_irqsave(&emu->emu_lock, flags);
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outl(regptr, emu->port + PTR);
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data |= inl(emu->port + DATA) & ~mask;
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outl(data, emu->port + DATA);
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spin_unlock_irqrestore(&emu->emu_lock, flags);
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} else {
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spin_lock_irqsave(&emu->emu_lock, flags);
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outl(regptr, emu->port + PTR);
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outl(data, emu->port + DATA);
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spin_unlock_irqrestore(&emu->emu_lock, flags);
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}
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}
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unsigned int snd_emu10k1_ptr20_read(emu10k1_t * emu,
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unsigned int reg,
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unsigned int chn)
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{
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unsigned long flags;
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unsigned int regptr, val;
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regptr = (reg << 16) | chn;
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spin_lock_irqsave(&emu->emu_lock, flags);
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outl(regptr, emu->port + 0x20 + PTR);
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val = inl(emu->port + 0x20 + DATA);
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spin_unlock_irqrestore(&emu->emu_lock, flags);
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return val;
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}
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void snd_emu10k1_ptr20_write(emu10k1_t *emu,
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unsigned int reg,
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unsigned int chn,
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unsigned int data)
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{
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unsigned int regptr;
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unsigned long flags;
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regptr = (reg << 16) | chn;
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spin_lock_irqsave(&emu->emu_lock, flags);
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outl(regptr, emu->port + 0x20 + PTR);
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outl(data, emu->port + 0x20 + DATA);
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spin_unlock_irqrestore(&emu->emu_lock, flags);
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}
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void snd_emu10k1_intr_enable(emu10k1_t *emu, unsigned int intrenb)
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{
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unsigned long flags;
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unsigned int enable;
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spin_lock_irqsave(&emu->emu_lock, flags);
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enable = inl(emu->port + INTE) | intrenb;
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outl(enable, emu->port + INTE);
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spin_unlock_irqrestore(&emu->emu_lock, flags);
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}
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void snd_emu10k1_intr_disable(emu10k1_t *emu, unsigned int intrenb)
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{
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unsigned long flags;
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unsigned int enable;
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spin_lock_irqsave(&emu->emu_lock, flags);
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enable = inl(emu->port + INTE) & ~intrenb;
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outl(enable, emu->port + INTE);
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spin_unlock_irqrestore(&emu->emu_lock, flags);
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}
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void snd_emu10k1_voice_intr_enable(emu10k1_t *emu, unsigned int voicenum)
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{
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unsigned long flags;
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unsigned int val;
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spin_lock_irqsave(&emu->emu_lock, flags);
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/* voice interrupt */
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if (voicenum >= 32) {
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outl(CLIEH << 16, emu->port + PTR);
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val = inl(emu->port + DATA);
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val |= 1 << (voicenum - 32);
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} else {
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outl(CLIEL << 16, emu->port + PTR);
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val = inl(emu->port + DATA);
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val |= 1 << voicenum;
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}
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outl(val, emu->port + DATA);
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spin_unlock_irqrestore(&emu->emu_lock, flags);
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}
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void snd_emu10k1_voice_intr_disable(emu10k1_t *emu, unsigned int voicenum)
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{
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unsigned long flags;
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unsigned int val;
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spin_lock_irqsave(&emu->emu_lock, flags);
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/* voice interrupt */
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if (voicenum >= 32) {
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outl(CLIEH << 16, emu->port + PTR);
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val = inl(emu->port + DATA);
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val &= ~(1 << (voicenum - 32));
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} else {
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outl(CLIEL << 16, emu->port + PTR);
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val = inl(emu->port + DATA);
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val &= ~(1 << voicenum);
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}
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outl(val, emu->port + DATA);
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spin_unlock_irqrestore(&emu->emu_lock, flags);
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}
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void snd_emu10k1_voice_intr_ack(emu10k1_t *emu, unsigned int voicenum)
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{
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unsigned long flags;
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spin_lock_irqsave(&emu->emu_lock, flags);
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/* voice interrupt */
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if (voicenum >= 32) {
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outl(CLIPH << 16, emu->port + PTR);
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voicenum = 1 << (voicenum - 32);
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} else {
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outl(CLIPL << 16, emu->port + PTR);
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voicenum = 1 << voicenum;
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}
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outl(voicenum, emu->port + DATA);
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spin_unlock_irqrestore(&emu->emu_lock, flags);
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}
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void snd_emu10k1_voice_half_loop_intr_enable(emu10k1_t *emu, unsigned int voicenum)
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{
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unsigned long flags;
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unsigned int val;
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spin_lock_irqsave(&emu->emu_lock, flags);
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/* voice interrupt */
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if (voicenum >= 32) {
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outl(HLIEH << 16, emu->port + PTR);
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val = inl(emu->port + DATA);
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val |= 1 << (voicenum - 32);
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} else {
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outl(HLIEL << 16, emu->port + PTR);
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val = inl(emu->port + DATA);
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val |= 1 << voicenum;
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}
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outl(val, emu->port + DATA);
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spin_unlock_irqrestore(&emu->emu_lock, flags);
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}
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void snd_emu10k1_voice_half_loop_intr_disable(emu10k1_t *emu, unsigned int voicenum)
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{
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unsigned long flags;
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unsigned int val;
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spin_lock_irqsave(&emu->emu_lock, flags);
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/* voice interrupt */
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if (voicenum >= 32) {
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outl(HLIEH << 16, emu->port + PTR);
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val = inl(emu->port + DATA);
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val &= ~(1 << (voicenum - 32));
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} else {
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outl(HLIEL << 16, emu->port + PTR);
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val = inl(emu->port + DATA);
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val &= ~(1 << voicenum);
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}
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outl(val, emu->port + DATA);
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spin_unlock_irqrestore(&emu->emu_lock, flags);
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}
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void snd_emu10k1_voice_half_loop_intr_ack(emu10k1_t *emu, unsigned int voicenum)
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{
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unsigned long flags;
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spin_lock_irqsave(&emu->emu_lock, flags);
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/* voice interrupt */
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if (voicenum >= 32) {
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outl(HLIPH << 16, emu->port + PTR);
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voicenum = 1 << (voicenum - 32);
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} else {
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outl(HLIPL << 16, emu->port + PTR);
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voicenum = 1 << voicenum;
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}
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outl(voicenum, emu->port + DATA);
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spin_unlock_irqrestore(&emu->emu_lock, flags);
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}
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void snd_emu10k1_voice_set_loop_stop(emu10k1_t *emu, unsigned int voicenum)
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{
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unsigned long flags;
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unsigned int sol;
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spin_lock_irqsave(&emu->emu_lock, flags);
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/* voice interrupt */
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if (voicenum >= 32) {
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outl(SOLEH << 16, emu->port + PTR);
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sol = inl(emu->port + DATA);
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sol |= 1 << (voicenum - 32);
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} else {
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outl(SOLEL << 16, emu->port + PTR);
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sol = inl(emu->port + DATA);
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sol |= 1 << voicenum;
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}
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outl(sol, emu->port + DATA);
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spin_unlock_irqrestore(&emu->emu_lock, flags);
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}
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void snd_emu10k1_voice_clear_loop_stop(emu10k1_t *emu, unsigned int voicenum)
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{
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unsigned long flags;
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unsigned int sol;
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spin_lock_irqsave(&emu->emu_lock, flags);
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/* voice interrupt */
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if (voicenum >= 32) {
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outl(SOLEH << 16, emu->port + PTR);
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sol = inl(emu->port + DATA);
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sol &= ~(1 << (voicenum - 32));
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} else {
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outl(SOLEL << 16, emu->port + PTR);
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sol = inl(emu->port + DATA);
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sol &= ~(1 << voicenum);
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}
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outl(sol, emu->port + DATA);
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spin_unlock_irqrestore(&emu->emu_lock, flags);
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}
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void snd_emu10k1_wait(emu10k1_t *emu, unsigned int wait)
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{
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volatile unsigned count;
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unsigned int newtime = 0, curtime;
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curtime = inl(emu->port + WC) >> 6;
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while (wait-- > 0) {
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count = 0;
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while (count++ < 16384) {
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newtime = inl(emu->port + WC) >> 6;
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if (newtime != curtime)
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break;
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}
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if (count >= 16384)
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break;
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curtime = newtime;
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}
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}
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unsigned short snd_emu10k1_ac97_read(ac97_t *ac97, unsigned short reg)
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{
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emu10k1_t *emu = ac97->private_data;
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unsigned long flags;
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unsigned short val;
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spin_lock_irqsave(&emu->emu_lock, flags);
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outb(reg, emu->port + AC97ADDRESS);
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val = inw(emu->port + AC97DATA);
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spin_unlock_irqrestore(&emu->emu_lock, flags);
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return val;
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}
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void snd_emu10k1_ac97_write(ac97_t *ac97, unsigned short reg, unsigned short data)
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{
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emu10k1_t *emu = ac97->private_data;
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unsigned long flags;
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spin_lock_irqsave(&emu->emu_lock, flags);
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outb(reg, emu->port + AC97ADDRESS);
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outw(data, emu->port + AC97DATA);
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spin_unlock_irqrestore(&emu->emu_lock, flags);
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}
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/*
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* convert rate to pitch
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*/
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unsigned int snd_emu10k1_rate_to_pitch(unsigned int rate)
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{
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static u32 logMagTable[128] = {
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0x00000, 0x02dfc, 0x05b9e, 0x088e6, 0x0b5d6, 0x0e26f, 0x10eb3, 0x13aa2,
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0x1663f, 0x1918a, 0x1bc84, 0x1e72e, 0x2118b, 0x23b9a, 0x2655d, 0x28ed5,
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0x2b803, 0x2e0e8, 0x30985, 0x331db, 0x359eb, 0x381b6, 0x3a93d, 0x3d081,
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0x3f782, 0x41e42, 0x444c1, 0x46b01, 0x49101, 0x4b6c4, 0x4dc49, 0x50191,
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0x5269e, 0x54b6f, 0x57006, 0x59463, 0x5b888, 0x5dc74, 0x60029, 0x623a7,
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0x646ee, 0x66a00, 0x68cdd, 0x6af86, 0x6d1fa, 0x6f43c, 0x7164b, 0x73829,
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0x759d4, 0x77b4f, 0x79c9a, 0x7bdb5, 0x7dea1, 0x7ff5e, 0x81fed, 0x8404e,
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0x86082, 0x88089, 0x8a064, 0x8c014, 0x8df98, 0x8fef1, 0x91e20, 0x93d26,
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0x95c01, 0x97ab4, 0x9993e, 0x9b79f, 0x9d5d9, 0x9f3ec, 0xa11d8, 0xa2f9d,
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0xa4d3c, 0xa6ab5, 0xa8808, 0xaa537, 0xac241, 0xadf26, 0xafbe7, 0xb1885,
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0xb3500, 0xb5157, 0xb6d8c, 0xb899f, 0xba58f, 0xbc15e, 0xbdd0c, 0xbf899,
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0xc1404, 0xc2f50, 0xc4a7b, 0xc6587, 0xc8073, 0xc9b3f, 0xcb5ed, 0xcd07c,
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0xceaec, 0xd053f, 0xd1f73, 0xd398a, 0xd5384, 0xd6d60, 0xd8720, 0xda0c3,
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0xdba4a, 0xdd3b4, 0xded03, 0xe0636, 0xe1f4e, 0xe384a, 0xe512c, 0xe69f3,
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0xe829f, 0xe9b31, 0xeb3a9, 0xecc08, 0xee44c, 0xefc78, 0xf148a, 0xf2c83,
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0xf4463, 0xf5c2a, 0xf73da, 0xf8b71, 0xfa2f0, 0xfba57, 0xfd1a7, 0xfe8df
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};
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static char logSlopeTable[128] = {
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0x5c, 0x5c, 0x5b, 0x5a, 0x5a, 0x59, 0x58, 0x58,
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0x57, 0x56, 0x56, 0x55, 0x55, 0x54, 0x53, 0x53,
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0x52, 0x52, 0x51, 0x51, 0x50, 0x50, 0x4f, 0x4f,
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0x4e, 0x4d, 0x4d, 0x4d, 0x4c, 0x4c, 0x4b, 0x4b,
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0x4a, 0x4a, 0x49, 0x49, 0x48, 0x48, 0x47, 0x47,
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0x47, 0x46, 0x46, 0x45, 0x45, 0x45, 0x44, 0x44,
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0x43, 0x43, 0x43, 0x42, 0x42, 0x42, 0x41, 0x41,
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0x41, 0x40, 0x40, 0x40, 0x3f, 0x3f, 0x3f, 0x3e,
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0x3e, 0x3e, 0x3d, 0x3d, 0x3d, 0x3c, 0x3c, 0x3c,
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0x3b, 0x3b, 0x3b, 0x3b, 0x3a, 0x3a, 0x3a, 0x39,
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0x39, 0x39, 0x39, 0x38, 0x38, 0x38, 0x38, 0x37,
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0x37, 0x37, 0x37, 0x36, 0x36, 0x36, 0x36, 0x35,
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0x35, 0x35, 0x35, 0x34, 0x34, 0x34, 0x34, 0x34,
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0x33, 0x33, 0x33, 0x33, 0x32, 0x32, 0x32, 0x32,
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0x32, 0x31, 0x31, 0x31, 0x31, 0x31, 0x30, 0x30,
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0x30, 0x30, 0x30, 0x2f, 0x2f, 0x2f, 0x2f, 0x2f
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};
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int i;
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if (rate == 0)
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return 0; /* Bail out if no leading "1" */
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rate *= 11185; /* Scale 48000 to 0x20002380 */
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for (i = 31; i > 0; i--) {
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if (rate & 0x80000000) { /* Detect leading "1" */
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return (((unsigned int) (i - 15) << 20) +
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logMagTable[0x7f & (rate >> 24)] +
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(0x7f & (rate >> 17)) *
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logSlopeTable[0x7f & (rate >> 24)]);
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}
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rate <<= 1;
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}
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return 0; /* Should never reach this point */
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}
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