705 lines
19 KiB
C
705 lines
19 KiB
C
/*********************************************************************
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*
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* 2002/06/30 Karsten Wiese:
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* removed kernel-version dependencies.
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* ripped from linux kernel 2.4.18 (OSS Implementation) by me.
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* In the OSS Version, this file is compiled to a separate MODULE,
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* that is used by the pinnacle and the classic driver.
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* since there is no classic driver for alsa yet (i dont have a classic
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* & writing one blindfold is difficult) this file's object is statically
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* linked into the pinnacle-driver-module for now. look for the string
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* "uncomment this to make this a module again"
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* to do guess what.
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*
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* the following is a copy of the 2.4.18 OSS FREE file-heading comment:
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*
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* msnd.c - Driver Base
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*
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* Turtle Beach MultiSound Sound Card Driver for Linux
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*
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* Copyright (C) 1998 Andrew Veliath
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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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********************************************************************/
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <linux/fs.h>
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#include <linux/delay.h>
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#include <linux/module.h>
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#include <sound/core.h>
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#include <sound/initval.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include "msnd.h"
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#define LOGNAME "msnd"
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void snd_msnd_init_queue(void *base, int start, int size)
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{
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writew(PCTODSP_BASED(start), base + JQS_wStart);
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writew(PCTODSP_OFFSET(size) - 1, base + JQS_wSize);
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writew(0, base + JQS_wHead);
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writew(0, base + JQS_wTail);
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}
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EXPORT_SYMBOL(snd_msnd_init_queue);
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static int snd_msnd_wait_TXDE(struct snd_msnd *dev)
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{
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unsigned int io = dev->io;
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int timeout = 1000;
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while (timeout-- > 0)
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if (inb(io + HP_ISR) & HPISR_TXDE)
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return 0;
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return -EIO;
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}
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static int snd_msnd_wait_HC0(struct snd_msnd *dev)
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{
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unsigned int io = dev->io;
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int timeout = 1000;
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while (timeout-- > 0)
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if (!(inb(io + HP_CVR) & HPCVR_HC))
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return 0;
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return -EIO;
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}
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int snd_msnd_send_dsp_cmd(struct snd_msnd *dev, u8 cmd)
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{
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unsigned long flags;
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spin_lock_irqsave(&dev->lock, flags);
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if (snd_msnd_wait_HC0(dev) == 0) {
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outb(cmd, dev->io + HP_CVR);
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spin_unlock_irqrestore(&dev->lock, flags);
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return 0;
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}
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spin_unlock_irqrestore(&dev->lock, flags);
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snd_printd(KERN_ERR LOGNAME ": Send DSP command timeout\n");
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return -EIO;
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}
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EXPORT_SYMBOL(snd_msnd_send_dsp_cmd);
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int snd_msnd_send_word(struct snd_msnd *dev, unsigned char high,
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unsigned char mid, unsigned char low)
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{
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unsigned int io = dev->io;
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if (snd_msnd_wait_TXDE(dev) == 0) {
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outb(high, io + HP_TXH);
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outb(mid, io + HP_TXM);
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outb(low, io + HP_TXL);
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return 0;
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}
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snd_printd(KERN_ERR LOGNAME ": Send host word timeout\n");
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return -EIO;
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}
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EXPORT_SYMBOL(snd_msnd_send_word);
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int snd_msnd_upload_host(struct snd_msnd *dev, const u8 *bin, int len)
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{
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int i;
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if (len % 3 != 0) {
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snd_printk(KERN_ERR LOGNAME
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": Upload host data not multiple of 3!\n");
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return -EINVAL;
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}
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for (i = 0; i < len; i += 3)
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if (snd_msnd_send_word(dev, bin[i], bin[i + 1], bin[i + 2]))
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return -EIO;
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inb(dev->io + HP_RXL);
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inb(dev->io + HP_CVR);
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return 0;
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}
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EXPORT_SYMBOL(snd_msnd_upload_host);
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int snd_msnd_enable_irq(struct snd_msnd *dev)
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{
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unsigned long flags;
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if (dev->irq_ref++)
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return 0;
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snd_printdd(LOGNAME ": Enabling IRQ\n");
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spin_lock_irqsave(&dev->lock, flags);
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if (snd_msnd_wait_TXDE(dev) == 0) {
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outb(inb(dev->io + HP_ICR) | HPICR_TREQ, dev->io + HP_ICR);
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if (dev->type == msndClassic)
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outb(dev->irqid, dev->io + HP_IRQM);
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outb(inb(dev->io + HP_ICR) & ~HPICR_TREQ, dev->io + HP_ICR);
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outb(inb(dev->io + HP_ICR) | HPICR_RREQ, dev->io + HP_ICR);
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enable_irq(dev->irq);
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snd_msnd_init_queue(dev->DSPQ, dev->dspq_data_buff,
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dev->dspq_buff_size);
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spin_unlock_irqrestore(&dev->lock, flags);
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return 0;
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}
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spin_unlock_irqrestore(&dev->lock, flags);
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snd_printd(KERN_ERR LOGNAME ": Enable IRQ failed\n");
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return -EIO;
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}
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EXPORT_SYMBOL(snd_msnd_enable_irq);
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int snd_msnd_disable_irq(struct snd_msnd *dev)
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{
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unsigned long flags;
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if (--dev->irq_ref > 0)
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return 0;
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if (dev->irq_ref < 0)
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snd_printd(KERN_WARNING LOGNAME ": IRQ ref count is %d\n",
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dev->irq_ref);
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snd_printdd(LOGNAME ": Disabling IRQ\n");
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spin_lock_irqsave(&dev->lock, flags);
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if (snd_msnd_wait_TXDE(dev) == 0) {
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outb(inb(dev->io + HP_ICR) & ~HPICR_RREQ, dev->io + HP_ICR);
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if (dev->type == msndClassic)
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outb(HPIRQ_NONE, dev->io + HP_IRQM);
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disable_irq(dev->irq);
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spin_unlock_irqrestore(&dev->lock, flags);
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return 0;
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}
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spin_unlock_irqrestore(&dev->lock, flags);
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snd_printd(KERN_ERR LOGNAME ": Disable IRQ failed\n");
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return -EIO;
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}
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EXPORT_SYMBOL(snd_msnd_disable_irq);
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static inline long get_play_delay_jiffies(struct snd_msnd *chip, long size)
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{
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long tmp = (size * HZ * chip->play_sample_size) / 8;
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return tmp / (chip->play_sample_rate * chip->play_channels);
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}
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static void snd_msnd_dsp_write_flush(struct snd_msnd *chip)
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{
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if (!(chip->mode & FMODE_WRITE) || !test_bit(F_WRITING, &chip->flags))
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return;
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set_bit(F_WRITEFLUSH, &chip->flags);
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/* interruptible_sleep_on_timeout(
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&chip->writeflush,
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get_play_delay_jiffies(&chip, chip->DAPF.len));*/
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clear_bit(F_WRITEFLUSH, &chip->flags);
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if (!signal_pending(current))
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schedule_timeout_interruptible(
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get_play_delay_jiffies(chip, chip->play_period_bytes));
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clear_bit(F_WRITING, &chip->flags);
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}
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void snd_msnd_dsp_halt(struct snd_msnd *chip, struct file *file)
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{
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if ((file ? file->f_mode : chip->mode) & FMODE_READ) {
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clear_bit(F_READING, &chip->flags);
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snd_msnd_send_dsp_cmd(chip, HDEX_RECORD_STOP);
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snd_msnd_disable_irq(chip);
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if (file) {
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snd_printd(KERN_INFO LOGNAME
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": Stopping read for %p\n", file);
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chip->mode &= ~FMODE_READ;
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}
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clear_bit(F_AUDIO_READ_INUSE, &chip->flags);
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}
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if ((file ? file->f_mode : chip->mode) & FMODE_WRITE) {
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if (test_bit(F_WRITING, &chip->flags)) {
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snd_msnd_dsp_write_flush(chip);
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snd_msnd_send_dsp_cmd(chip, HDEX_PLAY_STOP);
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}
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snd_msnd_disable_irq(chip);
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if (file) {
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snd_printd(KERN_INFO
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LOGNAME ": Stopping write for %p\n", file);
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chip->mode &= ~FMODE_WRITE;
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}
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clear_bit(F_AUDIO_WRITE_INUSE, &chip->flags);
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}
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}
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EXPORT_SYMBOL(snd_msnd_dsp_halt);
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int snd_msnd_DARQ(struct snd_msnd *chip, int bank)
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{
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int /*size, n,*/ timeout = 3;
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u16 wTmp;
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/* void *DAQD; */
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/* Increment the tail and check for queue wrap */
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wTmp = readw(chip->DARQ + JQS_wTail) + PCTODSP_OFFSET(DAQDS__size);
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if (wTmp > readw(chip->DARQ + JQS_wSize))
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wTmp = 0;
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while (wTmp == readw(chip->DARQ + JQS_wHead) && timeout--)
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udelay(1);
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if (chip->capturePeriods == 2) {
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void *pDAQ = chip->mappedbase + DARQ_DATA_BUFF +
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bank * DAQDS__size + DAQDS_wStart;
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unsigned short offset = 0x3000 + chip->capturePeriodBytes;
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if (readw(pDAQ) != PCTODSP_BASED(0x3000))
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offset = 0x3000;
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writew(PCTODSP_BASED(offset), pDAQ);
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}
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writew(wTmp, chip->DARQ + JQS_wTail);
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#if 0
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/* Get our digital audio queue struct */
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DAQD = bank * DAQDS__size + chip->mappedbase + DARQ_DATA_BUFF;
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/* Get length of data */
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size = readw(DAQD + DAQDS_wSize);
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/* Read data from the head (unprotected bank 1 access okay
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since this is only called inside an interrupt) */
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outb(HPBLKSEL_1, chip->io + HP_BLKS);
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n = msnd_fifo_write(&chip->DARF,
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(char *)(chip->base + bank * DAR_BUFF_SIZE),
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size, 0);
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if (n <= 0) {
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outb(HPBLKSEL_0, chip->io + HP_BLKS);
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return n;
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}
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outb(HPBLKSEL_0, chip->io + HP_BLKS);
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#endif
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return 1;
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}
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EXPORT_SYMBOL(snd_msnd_DARQ);
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int snd_msnd_DAPQ(struct snd_msnd *chip, int start)
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{
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u16 DAPQ_tail;
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int protect = start, nbanks = 0;
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void *DAQD;
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static int play_banks_submitted;
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/* unsigned long flags;
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spin_lock_irqsave(&chip->lock, flags); not necessary */
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DAPQ_tail = readw(chip->DAPQ + JQS_wTail);
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while (DAPQ_tail != readw(chip->DAPQ + JQS_wHead) || start) {
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int bank_num = DAPQ_tail / PCTODSP_OFFSET(DAQDS__size);
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if (start) {
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start = 0;
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play_banks_submitted = 0;
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}
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/* Get our digital audio queue struct */
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DAQD = bank_num * DAQDS__size + chip->mappedbase +
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DAPQ_DATA_BUFF;
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/* Write size of this bank */
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writew(chip->play_period_bytes, DAQD + DAQDS_wSize);
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if (play_banks_submitted < 3)
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++play_banks_submitted;
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else if (chip->playPeriods == 2) {
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unsigned short offset = chip->play_period_bytes;
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if (readw(DAQD + DAQDS_wStart) != PCTODSP_BASED(0x0))
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offset = 0;
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writew(PCTODSP_BASED(offset), DAQD + DAQDS_wStart);
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}
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++nbanks;
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/* Then advance the tail */
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/*
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if (protect)
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snd_printd(KERN_INFO "B %X %lX\n",
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bank_num, xtime.tv_usec);
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*/
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DAPQ_tail = (++bank_num % 3) * PCTODSP_OFFSET(DAQDS__size);
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writew(DAPQ_tail, chip->DAPQ + JQS_wTail);
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/* Tell the DSP to play the bank */
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snd_msnd_send_dsp_cmd(chip, HDEX_PLAY_START);
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if (protect)
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if (2 == bank_num)
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break;
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}
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/*
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if (protect)
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snd_printd(KERN_INFO "%lX\n", xtime.tv_usec);
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*/
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/* spin_unlock_irqrestore(&chip->lock, flags); not necessary */
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return nbanks;
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}
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EXPORT_SYMBOL(snd_msnd_DAPQ);
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static void snd_msnd_play_reset_queue(struct snd_msnd *chip,
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unsigned int pcm_periods,
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unsigned int pcm_count)
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{
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int n;
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void *pDAQ = chip->mappedbase + DAPQ_DATA_BUFF;
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chip->last_playbank = -1;
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chip->playLimit = pcm_count * (pcm_periods - 1);
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chip->playPeriods = pcm_periods;
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writew(PCTODSP_OFFSET(0 * DAQDS__size), chip->DAPQ + JQS_wHead);
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writew(PCTODSP_OFFSET(0 * DAQDS__size), chip->DAPQ + JQS_wTail);
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chip->play_period_bytes = pcm_count;
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for (n = 0; n < pcm_periods; ++n, pDAQ += DAQDS__size) {
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writew(PCTODSP_BASED((u32)(pcm_count * n)),
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pDAQ + DAQDS_wStart);
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writew(0, pDAQ + DAQDS_wSize);
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writew(1, pDAQ + DAQDS_wFormat);
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writew(chip->play_sample_size, pDAQ + DAQDS_wSampleSize);
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writew(chip->play_channels, pDAQ + DAQDS_wChannels);
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writew(chip->play_sample_rate, pDAQ + DAQDS_wSampleRate);
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writew(HIMT_PLAY_DONE * 0x100 + n, pDAQ + DAQDS_wIntMsg);
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writew(n, pDAQ + DAQDS_wFlags);
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}
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}
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static void snd_msnd_capture_reset_queue(struct snd_msnd *chip,
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unsigned int pcm_periods,
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unsigned int pcm_count)
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{
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int n;
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void *pDAQ;
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/* unsigned long flags; */
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/* snd_msnd_init_queue(chip->DARQ, DARQ_DATA_BUFF, DARQ_BUFF_SIZE); */
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chip->last_recbank = 2;
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chip->captureLimit = pcm_count * (pcm_periods - 1);
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chip->capturePeriods = pcm_periods;
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writew(PCTODSP_OFFSET(0 * DAQDS__size), chip->DARQ + JQS_wHead);
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writew(PCTODSP_OFFSET(chip->last_recbank * DAQDS__size),
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chip->DARQ + JQS_wTail);
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#if 0 /* Critical section: bank 1 access. this is how the OSS driver does it:*/
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spin_lock_irqsave(&chip->lock, flags);
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outb(HPBLKSEL_1, chip->io + HP_BLKS);
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memset_io(chip->mappedbase, 0, DAR_BUFF_SIZE * 3);
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outb(HPBLKSEL_0, chip->io + HP_BLKS);
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spin_unlock_irqrestore(&chip->lock, flags);
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#endif
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chip->capturePeriodBytes = pcm_count;
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snd_printdd("snd_msnd_capture_reset_queue() %i\n", pcm_count);
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pDAQ = chip->mappedbase + DARQ_DATA_BUFF;
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for (n = 0; n < pcm_periods; ++n, pDAQ += DAQDS__size) {
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u32 tmp = pcm_count * n;
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writew(PCTODSP_BASED(tmp + 0x3000), pDAQ + DAQDS_wStart);
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writew(pcm_count, pDAQ + DAQDS_wSize);
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writew(1, pDAQ + DAQDS_wFormat);
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writew(chip->capture_sample_size, pDAQ + DAQDS_wSampleSize);
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writew(chip->capture_channels, pDAQ + DAQDS_wChannels);
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writew(chip->capture_sample_rate, pDAQ + DAQDS_wSampleRate);
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writew(HIMT_RECORD_DONE * 0x100 + n, pDAQ + DAQDS_wIntMsg);
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writew(n, pDAQ + DAQDS_wFlags);
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}
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}
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static struct snd_pcm_hardware snd_msnd_playback = {
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.info = SNDRV_PCM_INFO_MMAP |
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SNDRV_PCM_INFO_INTERLEAVED |
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SNDRV_PCM_INFO_MMAP_VALID |
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SNDRV_PCM_INFO_BATCH,
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.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
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.rates = SNDRV_PCM_RATE_8000_48000,
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.rate_min = 8000,
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.rate_max = 48000,
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.channels_min = 1,
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.channels_max = 2,
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.buffer_bytes_max = 0x3000,
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.period_bytes_min = 0x40,
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.period_bytes_max = 0x1800,
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.periods_min = 2,
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.periods_max = 3,
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.fifo_size = 0,
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};
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static struct snd_pcm_hardware snd_msnd_capture = {
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.info = SNDRV_PCM_INFO_MMAP |
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SNDRV_PCM_INFO_INTERLEAVED |
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SNDRV_PCM_INFO_MMAP_VALID |
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SNDRV_PCM_INFO_BATCH,
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.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
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.rates = SNDRV_PCM_RATE_8000_48000,
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.rate_min = 8000,
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.rate_max = 48000,
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.channels_min = 1,
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.channels_max = 2,
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.buffer_bytes_max = 0x3000,
|
|
.period_bytes_min = 0x40,
|
|
.period_bytes_max = 0x1800,
|
|
.periods_min = 2,
|
|
.periods_max = 3,
|
|
.fifo_size = 0,
|
|
};
|
|
|
|
|
|
static int snd_msnd_playback_open(struct snd_pcm_substream *substream)
|
|
{
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
struct snd_msnd *chip = snd_pcm_substream_chip(substream);
|
|
|
|
set_bit(F_AUDIO_WRITE_INUSE, &chip->flags);
|
|
clear_bit(F_WRITING, &chip->flags);
|
|
snd_msnd_enable_irq(chip);
|
|
|
|
runtime->dma_area = chip->mappedbase;
|
|
runtime->dma_bytes = 0x3000;
|
|
|
|
chip->playback_substream = substream;
|
|
runtime->hw = snd_msnd_playback;
|
|
return 0;
|
|
}
|
|
|
|
static int snd_msnd_playback_close(struct snd_pcm_substream *substream)
|
|
{
|
|
struct snd_msnd *chip = snd_pcm_substream_chip(substream);
|
|
|
|
snd_msnd_disable_irq(chip);
|
|
clear_bit(F_AUDIO_WRITE_INUSE, &chip->flags);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int snd_msnd_playback_hw_params(struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hw_params *params)
|
|
{
|
|
int i;
|
|
struct snd_msnd *chip = snd_pcm_substream_chip(substream);
|
|
void *pDAQ = chip->mappedbase + DAPQ_DATA_BUFF;
|
|
|
|
chip->play_sample_size = snd_pcm_format_width(params_format(params));
|
|
chip->play_channels = params_channels(params);
|
|
chip->play_sample_rate = params_rate(params);
|
|
|
|
for (i = 0; i < 3; ++i, pDAQ += DAQDS__size) {
|
|
writew(chip->play_sample_size, pDAQ + DAQDS_wSampleSize);
|
|
writew(chip->play_channels, pDAQ + DAQDS_wChannels);
|
|
writew(chip->play_sample_rate, pDAQ + DAQDS_wSampleRate);
|
|
}
|
|
/* dont do this here:
|
|
* snd_msnd_calibrate_adc(chip->play_sample_rate);
|
|
*/
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int snd_msnd_playback_prepare(struct snd_pcm_substream *substream)
|
|
{
|
|
struct snd_msnd *chip = snd_pcm_substream_chip(substream);
|
|
unsigned int pcm_size = snd_pcm_lib_buffer_bytes(substream);
|
|
unsigned int pcm_count = snd_pcm_lib_period_bytes(substream);
|
|
unsigned int pcm_periods = pcm_size / pcm_count;
|
|
|
|
snd_msnd_play_reset_queue(chip, pcm_periods, pcm_count);
|
|
chip->playDMAPos = 0;
|
|
return 0;
|
|
}
|
|
|
|
static int snd_msnd_playback_trigger(struct snd_pcm_substream *substream,
|
|
int cmd)
|
|
{
|
|
struct snd_msnd *chip = snd_pcm_substream_chip(substream);
|
|
int result = 0;
|
|
|
|
if (cmd == SNDRV_PCM_TRIGGER_START) {
|
|
snd_printdd("snd_msnd_playback_trigger(START)\n");
|
|
chip->banksPlayed = 0;
|
|
set_bit(F_WRITING, &chip->flags);
|
|
snd_msnd_DAPQ(chip, 1);
|
|
} else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
|
|
snd_printdd("snd_msnd_playback_trigger(STop)\n");
|
|
/* interrupt diagnostic, comment this out later */
|
|
clear_bit(F_WRITING, &chip->flags);
|
|
snd_msnd_send_dsp_cmd(chip, HDEX_PLAY_STOP);
|
|
} else {
|
|
snd_printd(KERN_ERR "snd_msnd_playback_trigger(?????)\n");
|
|
result = -EINVAL;
|
|
}
|
|
|
|
snd_printdd("snd_msnd_playback_trigger() ENDE\n");
|
|
return result;
|
|
}
|
|
|
|
static snd_pcm_uframes_t
|
|
snd_msnd_playback_pointer(struct snd_pcm_substream *substream)
|
|
{
|
|
struct snd_msnd *chip = snd_pcm_substream_chip(substream);
|
|
|
|
return bytes_to_frames(substream->runtime, chip->playDMAPos);
|
|
}
|
|
|
|
|
|
static struct snd_pcm_ops snd_msnd_playback_ops = {
|
|
.open = snd_msnd_playback_open,
|
|
.close = snd_msnd_playback_close,
|
|
.ioctl = snd_pcm_lib_ioctl,
|
|
.hw_params = snd_msnd_playback_hw_params,
|
|
.prepare = snd_msnd_playback_prepare,
|
|
.trigger = snd_msnd_playback_trigger,
|
|
.pointer = snd_msnd_playback_pointer,
|
|
};
|
|
|
|
static int snd_msnd_capture_open(struct snd_pcm_substream *substream)
|
|
{
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
struct snd_msnd *chip = snd_pcm_substream_chip(substream);
|
|
|
|
set_bit(F_AUDIO_READ_INUSE, &chip->flags);
|
|
snd_msnd_enable_irq(chip);
|
|
runtime->dma_area = chip->mappedbase + 0x3000;
|
|
runtime->dma_bytes = 0x3000;
|
|
memset(runtime->dma_area, 0, runtime->dma_bytes);
|
|
chip->capture_substream = substream;
|
|
runtime->hw = snd_msnd_capture;
|
|
return 0;
|
|
}
|
|
|
|
static int snd_msnd_capture_close(struct snd_pcm_substream *substream)
|
|
{
|
|
struct snd_msnd *chip = snd_pcm_substream_chip(substream);
|
|
|
|
snd_msnd_disable_irq(chip);
|
|
clear_bit(F_AUDIO_READ_INUSE, &chip->flags);
|
|
return 0;
|
|
}
|
|
|
|
static int snd_msnd_capture_prepare(struct snd_pcm_substream *substream)
|
|
{
|
|
struct snd_msnd *chip = snd_pcm_substream_chip(substream);
|
|
unsigned int pcm_size = snd_pcm_lib_buffer_bytes(substream);
|
|
unsigned int pcm_count = snd_pcm_lib_period_bytes(substream);
|
|
unsigned int pcm_periods = pcm_size / pcm_count;
|
|
|
|
snd_msnd_capture_reset_queue(chip, pcm_periods, pcm_count);
|
|
chip->captureDMAPos = 0;
|
|
return 0;
|
|
}
|
|
|
|
static int snd_msnd_capture_trigger(struct snd_pcm_substream *substream,
|
|
int cmd)
|
|
{
|
|
struct snd_msnd *chip = snd_pcm_substream_chip(substream);
|
|
|
|
if (cmd == SNDRV_PCM_TRIGGER_START) {
|
|
chip->last_recbank = -1;
|
|
set_bit(F_READING, &chip->flags);
|
|
if (snd_msnd_send_dsp_cmd(chip, HDEX_RECORD_START) == 0)
|
|
return 0;
|
|
|
|
clear_bit(F_READING, &chip->flags);
|
|
} else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
|
|
clear_bit(F_READING, &chip->flags);
|
|
snd_msnd_send_dsp_cmd(chip, HDEX_RECORD_STOP);
|
|
return 0;
|
|
}
|
|
return -EINVAL;
|
|
}
|
|
|
|
|
|
static snd_pcm_uframes_t
|
|
snd_msnd_capture_pointer(struct snd_pcm_substream *substream)
|
|
{
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
struct snd_msnd *chip = snd_pcm_substream_chip(substream);
|
|
|
|
return bytes_to_frames(runtime, chip->captureDMAPos);
|
|
}
|
|
|
|
|
|
static int snd_msnd_capture_hw_params(struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hw_params *params)
|
|
{
|
|
int i;
|
|
struct snd_msnd *chip = snd_pcm_substream_chip(substream);
|
|
void *pDAQ = chip->mappedbase + DARQ_DATA_BUFF;
|
|
|
|
chip->capture_sample_size = snd_pcm_format_width(params_format(params));
|
|
chip->capture_channels = params_channels(params);
|
|
chip->capture_sample_rate = params_rate(params);
|
|
|
|
for (i = 0; i < 3; ++i, pDAQ += DAQDS__size) {
|
|
writew(chip->capture_sample_size, pDAQ + DAQDS_wSampleSize);
|
|
writew(chip->capture_channels, pDAQ + DAQDS_wChannels);
|
|
writew(chip->capture_sample_rate, pDAQ + DAQDS_wSampleRate);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
static struct snd_pcm_ops snd_msnd_capture_ops = {
|
|
.open = snd_msnd_capture_open,
|
|
.close = snd_msnd_capture_close,
|
|
.ioctl = snd_pcm_lib_ioctl,
|
|
.hw_params = snd_msnd_capture_hw_params,
|
|
.prepare = snd_msnd_capture_prepare,
|
|
.trigger = snd_msnd_capture_trigger,
|
|
.pointer = snd_msnd_capture_pointer,
|
|
};
|
|
|
|
|
|
int snd_msnd_pcm(struct snd_card *card, int device)
|
|
{
|
|
struct snd_msnd *chip = card->private_data;
|
|
struct snd_pcm *pcm;
|
|
int err;
|
|
|
|
err = snd_pcm_new(card, "MSNDPINNACLE", device, 1, 1, &pcm);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_msnd_playback_ops);
|
|
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_msnd_capture_ops);
|
|
|
|
pcm->private_data = chip;
|
|
strcpy(pcm->name, "Hurricane");
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(snd_msnd_pcm);
|
|
|
|
MODULE_DESCRIPTION("Common routines for Turtle Beach Multisound drivers");
|
|
MODULE_LICENSE("GPL");
|
|
|