ALSA: Turtle Beach Multisound Classic/Pinnacle driver
This is driver for Turtle Beach Multisound cards:
Classic, Fiji and Pinnacle.
Tested pcm playback and recording and MIDI playback
on Multisound Pinnacle.
Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/isa/msnd/msnd.c b/sound/isa/msnd/msnd.c
new file mode 100644
index 0000000..264e082
--- /dev/null
+++ b/sound/isa/msnd/msnd.c
@@ -0,0 +1,702 @@
+/*********************************************************************
+ *
+ * 2002/06/30 Karsten Wiese:
+ * removed kernel-version dependencies.
+ * ripped from linux kernel 2.4.18 (OSS Implementation) by me.
+ * In the OSS Version, this file is compiled to a separate MODULE,
+ * that is used by the pinnacle and the classic driver.
+ * since there is no classic driver for alsa yet (i dont have a classic
+ * & writing one blindfold is difficult) this file's object is statically
+ * linked into the pinnacle-driver-module for now. look for the string
+ * "uncomment this to make this a module again"
+ * to do guess what.
+ *
+ * the following is a copy of the 2.4.18 OSS FREE file-heading comment:
+ *
+ * msnd.c - Driver Base
+ *
+ * Turtle Beach MultiSound Sound Card Driver for Linux
+ *
+ * Copyright (C) 1998 Andrew Veliath
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ ********************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/fs.h>
+#include <linux/delay.h>
+
+#include <sound/core.h>
+#include <sound/initval.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+
+#include "msnd.h"
+
+#define LOGNAME "msnd"
+
+
+void snd_msnd_init_queue(void *base, int start, int size)
+{
+ writew(PCTODSP_BASED(start), base + JQS_wStart);
+ writew(PCTODSP_OFFSET(size) - 1, base + JQS_wSize);
+ writew(0, base + JQS_wHead);
+ writew(0, base + JQS_wTail);
+}
+EXPORT_SYMBOL(snd_msnd_init_queue);
+
+static int snd_msnd_wait_TXDE(struct snd_msnd *dev)
+{
+ unsigned int io = dev->io;
+ int timeout = 1000;
+
+ while (timeout-- > 0)
+ if (inb(io + HP_ISR) & HPISR_TXDE)
+ return 0;
+
+ return -EIO;
+}
+
+static int snd_msnd_wait_HC0(struct snd_msnd *dev)
+{
+ unsigned int io = dev->io;
+ int timeout = 1000;
+
+ while (timeout-- > 0)
+ if (!(inb(io + HP_CVR) & HPCVR_HC))
+ return 0;
+
+ return -EIO;
+}
+
+int snd_msnd_send_dsp_cmd(struct snd_msnd *dev, u8 cmd)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&dev->lock, flags);
+ if (snd_msnd_wait_HC0(dev) == 0) {
+ outb(cmd, dev->io + HP_CVR);
+ spin_unlock_irqrestore(&dev->lock, flags);
+ return 0;
+ }
+ spin_unlock_irqrestore(&dev->lock, flags);
+
+ snd_printd(KERN_ERR LOGNAME ": Send DSP command timeout\n");
+
+ return -EIO;
+}
+EXPORT_SYMBOL(snd_msnd_send_dsp_cmd);
+
+int snd_msnd_send_word(struct snd_msnd *dev, unsigned char high,
+ unsigned char mid, unsigned char low)
+{
+ unsigned int io = dev->io;
+
+ if (snd_msnd_wait_TXDE(dev) == 0) {
+ outb(high, io + HP_TXH);
+ outb(mid, io + HP_TXM);
+ outb(low, io + HP_TXL);
+ return 0;
+ }
+
+ snd_printd(KERN_ERR LOGNAME ": Send host word timeout\n");
+
+ return -EIO;
+}
+EXPORT_SYMBOL(snd_msnd_send_word);
+
+int snd_msnd_upload_host(struct snd_msnd *dev, const u8 *bin, int len)
+{
+ int i;
+
+ if (len % 3 != 0) {
+ snd_printk(KERN_ERR LOGNAME
+ ": Upload host data not multiple of 3!\n");
+ return -EINVAL;
+ }
+
+ for (i = 0; i < len; i += 3)
+ if (snd_msnd_send_word(dev, bin[i], bin[i + 1], bin[i + 2]))
+ return -EIO;
+
+ inb(dev->io + HP_RXL);
+ inb(dev->io + HP_CVR);
+
+ return 0;
+}
+EXPORT_SYMBOL(snd_msnd_upload_host);
+
+int snd_msnd_enable_irq(struct snd_msnd *dev)
+{
+ unsigned long flags;
+
+ if (dev->irq_ref++)
+ return 0;
+
+ snd_printdd(LOGNAME ": Enabling IRQ\n");
+
+ spin_lock_irqsave(&dev->lock, flags);
+ if (snd_msnd_wait_TXDE(dev) == 0) {
+ outb(inb(dev->io + HP_ICR) | HPICR_TREQ, dev->io + HP_ICR);
+ if (dev->type == msndClassic)
+ outb(dev->irqid, dev->io + HP_IRQM);
+
+ outb(inb(dev->io + HP_ICR) & ~HPICR_TREQ, dev->io + HP_ICR);
+ outb(inb(dev->io + HP_ICR) | HPICR_RREQ, dev->io + HP_ICR);
+ enable_irq(dev->irq);
+ snd_msnd_init_queue(dev->DSPQ, dev->dspq_data_buff,
+ dev->dspq_buff_size);
+ spin_unlock_irqrestore(&dev->lock, flags);
+ return 0;
+ }
+ spin_unlock_irqrestore(&dev->lock, flags);
+
+ snd_printd(KERN_ERR LOGNAME ": Enable IRQ failed\n");
+
+ return -EIO;
+}
+EXPORT_SYMBOL(snd_msnd_enable_irq);
+
+int snd_msnd_disable_irq(struct snd_msnd *dev)
+{
+ unsigned long flags;
+
+ if (--dev->irq_ref > 0)
+ return 0;
+
+ if (dev->irq_ref < 0)
+ snd_printd(KERN_WARNING LOGNAME ": IRQ ref count is %d\n",
+ dev->irq_ref);
+
+ snd_printdd(LOGNAME ": Disabling IRQ\n");
+
+ spin_lock_irqsave(&dev->lock, flags);
+ if (snd_msnd_wait_TXDE(dev) == 0) {
+ outb(inb(dev->io + HP_ICR) & ~HPICR_RREQ, dev->io + HP_ICR);
+ if (dev->type == msndClassic)
+ outb(HPIRQ_NONE, dev->io + HP_IRQM);
+ disable_irq(dev->irq);
+ spin_unlock_irqrestore(&dev->lock, flags);
+ return 0;
+ }
+ spin_unlock_irqrestore(&dev->lock, flags);
+
+ snd_printd(KERN_ERR LOGNAME ": Disable IRQ failed\n");
+
+ return -EIO;
+}
+EXPORT_SYMBOL(snd_msnd_disable_irq);
+
+static inline long get_play_delay_jiffies(struct snd_msnd *chip, long size)
+{
+ long tmp = (size * HZ * chip->play_sample_size) / 8;
+ return tmp / (chip->play_sample_rate * chip->play_channels);
+}
+
+static void snd_msnd_dsp_write_flush(struct snd_msnd *chip)
+{
+ if (!(chip->mode & FMODE_WRITE) || !test_bit(F_WRITING, &chip->flags))
+ return;
+ set_bit(F_WRITEFLUSH, &chip->flags);
+/* interruptible_sleep_on_timeout(
+ &chip->writeflush,
+ get_play_delay_jiffies(&chip, chip->DAPF.len));*/
+ clear_bit(F_WRITEFLUSH, &chip->flags);
+ if (!signal_pending(current))
+ schedule_timeout_interruptible(
+ get_play_delay_jiffies(chip, chip->play_period_bytes));
+ clear_bit(F_WRITING, &chip->flags);
+}
+
+void snd_msnd_dsp_halt(struct snd_msnd *chip, struct file *file)
+{
+ if ((file ? file->f_mode : chip->mode) & FMODE_READ) {
+ clear_bit(F_READING, &chip->flags);
+ snd_msnd_send_dsp_cmd(chip, HDEX_RECORD_STOP);
+ snd_msnd_disable_irq(chip);
+ if (file) {
+ snd_printd(KERN_INFO LOGNAME
+ ": Stopping read for %p\n", file);
+ chip->mode &= ~FMODE_READ;
+ }
+ clear_bit(F_AUDIO_READ_INUSE, &chip->flags);
+ }
+ if ((file ? file->f_mode : chip->mode) & FMODE_WRITE) {
+ if (test_bit(F_WRITING, &chip->flags)) {
+ snd_msnd_dsp_write_flush(chip);
+ snd_msnd_send_dsp_cmd(chip, HDEX_PLAY_STOP);
+ }
+ snd_msnd_disable_irq(chip);
+ if (file) {
+ snd_printd(KERN_INFO
+ LOGNAME ": Stopping write for %p\n", file);
+ chip->mode &= ~FMODE_WRITE;
+ }
+ clear_bit(F_AUDIO_WRITE_INUSE, &chip->flags);
+ }
+}
+EXPORT_SYMBOL(snd_msnd_dsp_halt);
+
+
+int snd_msnd_DARQ(struct snd_msnd *chip, int bank)
+{
+ int /*size, n,*/ timeout = 3;
+ u16 wTmp;
+ /* void *DAQD; */
+
+ /* Increment the tail and check for queue wrap */
+ wTmp = readw(chip->DARQ + JQS_wTail) + PCTODSP_OFFSET(DAQDS__size);
+ if (wTmp > readw(chip->DARQ + JQS_wSize))
+ wTmp = 0;
+ while (wTmp == readw(chip->DARQ + JQS_wHead) && timeout--)
+ udelay(1);
+
+ if (chip->capturePeriods == 2) {
+ void *pDAQ = chip->mappedbase + DARQ_DATA_BUFF +
+ bank * DAQDS__size + DAQDS_wStart;
+ unsigned short offset = 0x3000 + chip->capturePeriodBytes;
+
+ if (readw(pDAQ) != PCTODSP_BASED(0x3000))
+ offset = 0x3000;
+ writew(PCTODSP_BASED(offset), pDAQ);
+ }
+
+ writew(wTmp, chip->DARQ + JQS_wTail);
+
+#if 0
+ /* Get our digital audio queue struct */
+ DAQD = bank * DAQDS__size + chip->mappedbase + DARQ_DATA_BUFF;
+
+ /* Get length of data */
+ size = readw(DAQD + DAQDS_wSize);
+
+ /* Read data from the head (unprotected bank 1 access okay
+ since this is only called inside an interrupt) */
+ outb(HPBLKSEL_1, chip->io + HP_BLKS);
+ n = msnd_fifo_write(&chip->DARF,
+ (char *)(chip->base + bank * DAR_BUFF_SIZE),
+ size, 0);
+ if (n <= 0) {
+ outb(HPBLKSEL_0, chip->io + HP_BLKS);
+ return n;
+ }
+ outb(HPBLKSEL_0, chip->io + HP_BLKS);
+#endif
+
+ return 1;
+}
+EXPORT_SYMBOL(snd_msnd_DARQ);
+
+int snd_msnd_DAPQ(struct snd_msnd *chip, int start)
+{
+ u16 DAPQ_tail;
+ int protect = start, nbanks = 0;
+ void *DAQD;
+ static int play_banks_submitted;
+ /* unsigned long flags;
+ spin_lock_irqsave(&chip->lock, flags); not necessary */
+
+ DAPQ_tail = readw(chip->DAPQ + JQS_wTail);
+ while (DAPQ_tail != readw(chip->DAPQ + JQS_wHead) || start) {
+ int bank_num = DAPQ_tail / PCTODSP_OFFSET(DAQDS__size);
+
+ if (start) {
+ start = 0;
+ play_banks_submitted = 0;
+ }
+
+ /* Get our digital audio queue struct */
+ DAQD = bank_num * DAQDS__size + chip->mappedbase +
+ DAPQ_DATA_BUFF;
+
+ /* Write size of this bank */
+ writew(chip->play_period_bytes, DAQD + DAQDS_wSize);
+ if (play_banks_submitted < 3)
+ ++play_banks_submitted;
+ else if (chip->playPeriods == 2) {
+ unsigned short offset = chip->play_period_bytes;
+
+ if (readw(DAQD + DAQDS_wStart) != PCTODSP_BASED(0x0))
+ offset = 0;
+
+ writew(PCTODSP_BASED(offset), DAQD + DAQDS_wStart);
+ }
+ ++nbanks;
+
+ /* Then advance the tail */
+ /*
+ if (protect)
+ snd_printd(KERN_INFO "B %X %lX\n",
+ bank_num, xtime.tv_usec);
+ */
+
+ DAPQ_tail = (++bank_num % 3) * PCTODSP_OFFSET(DAQDS__size);
+ writew(DAPQ_tail, chip->DAPQ + JQS_wTail);
+ /* Tell the DSP to play the bank */
+ snd_msnd_send_dsp_cmd(chip, HDEX_PLAY_START);
+ if (protect)
+ if (2 == bank_num)
+ break;
+ }
+ /*
+ if (protect)
+ snd_printd(KERN_INFO "%lX\n", xtime.tv_usec);
+ */
+ /* spin_unlock_irqrestore(&chip->lock, flags); not necessary */
+ return nbanks;
+}
+EXPORT_SYMBOL(snd_msnd_DAPQ);
+
+static void snd_msnd_play_reset_queue(struct snd_msnd *chip,
+ unsigned int pcm_periods,
+ unsigned int pcm_count)
+{
+ int n;
+ void *pDAQ = chip->mappedbase + DAPQ_DATA_BUFF;
+
+ chip->last_playbank = -1;
+ chip->playLimit = pcm_count * (pcm_periods - 1);
+ chip->playPeriods = pcm_periods;
+ writew(PCTODSP_OFFSET(0 * DAQDS__size), chip->DAPQ + JQS_wHead);
+ writew(PCTODSP_OFFSET(0 * DAQDS__size), chip->DAPQ + JQS_wTail);
+
+ chip->play_period_bytes = pcm_count;
+
+ for (n = 0; n < pcm_periods; ++n, pDAQ += DAQDS__size) {
+ writew(PCTODSP_BASED((u32)(pcm_count * n)),
+ pDAQ + DAQDS_wStart);
+ writew(0, pDAQ + DAQDS_wSize);
+ writew(1, pDAQ + DAQDS_wFormat);
+ writew(chip->play_sample_size, pDAQ + DAQDS_wSampleSize);
+ writew(chip->play_channels, pDAQ + DAQDS_wChannels);
+ writew(chip->play_sample_rate, pDAQ + DAQDS_wSampleRate);
+ writew(HIMT_PLAY_DONE * 0x100 + n, pDAQ + DAQDS_wIntMsg);
+ writew(n, pDAQ + DAQDS_wFlags);
+ }
+}
+
+static void snd_msnd_capture_reset_queue(struct snd_msnd *chip,
+ unsigned int pcm_periods,
+ unsigned int pcm_count)
+{
+ int n;
+ void *pDAQ;
+ /* unsigned long flags; */
+
+ /* snd_msnd_init_queue(chip->DARQ, DARQ_DATA_BUFF, DARQ_BUFF_SIZE); */
+
+ chip->last_recbank = 2;
+ chip->captureLimit = pcm_count * (pcm_periods - 1);
+ chip->capturePeriods = pcm_periods;
+ writew(PCTODSP_OFFSET(0 * DAQDS__size), chip->DARQ + JQS_wHead);
+ writew(PCTODSP_OFFSET(chip->last_recbank * DAQDS__size),
+ chip->DARQ + JQS_wTail);
+
+#if 0 /* Critical section: bank 1 access. this is how the OSS driver does it:*/
+ spin_lock_irqsave(&chip->lock, flags);
+ outb(HPBLKSEL_1, chip->io + HP_BLKS);
+ memset_io(chip->mappedbase, 0, DAR_BUFF_SIZE * 3);
+ outb(HPBLKSEL_0, chip->io + HP_BLKS);
+ spin_unlock_irqrestore(&chip->lock, flags);
+#endif
+
+ chip->capturePeriodBytes = pcm_count;
+ snd_printdd("snd_msnd_capture_reset_queue() %i\n", pcm_count);
+
+ pDAQ = chip->mappedbase + DARQ_DATA_BUFF;
+
+ for (n = 0; n < pcm_periods; ++n, pDAQ += DAQDS__size) {
+ u32 tmp = pcm_count * n;
+
+ writew(PCTODSP_BASED(tmp + 0x3000), pDAQ + DAQDS_wStart);
+ writew(pcm_count, pDAQ + DAQDS_wSize);
+ writew(1, pDAQ + DAQDS_wFormat);
+ writew(chip->capture_sample_size, pDAQ + DAQDS_wSampleSize);
+ writew(chip->capture_channels, pDAQ + DAQDS_wChannels);
+ writew(chip->capture_sample_rate, pDAQ + DAQDS_wSampleRate);
+ writew(HIMT_RECORD_DONE * 0x100 + n, pDAQ + DAQDS_wIntMsg);
+ writew(n, pDAQ + DAQDS_wFlags);
+ }
+}
+
+static struct snd_pcm_hardware snd_msnd_playback = {
+ .info = SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_MMAP_VALID,
+ .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
+ .rates = SNDRV_PCM_RATE_8000_48000,
+ .rate_min = 8000,
+ .rate_max = 48000,
+ .channels_min = 1,
+ .channels_max = 2,
+ .buffer_bytes_max = 0x3000,
+ .period_bytes_min = 0x40,
+ .period_bytes_max = 0x1800,
+ .periods_min = 2,
+ .periods_max = 3,
+ .fifo_size = 0,
+};
+
+static struct snd_pcm_hardware snd_msnd_capture = {
+ .info = SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_MMAP_VALID,
+ .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
+ .rates = SNDRV_PCM_RATE_8000_48000,
+ .rate_min = 8000,
+ .rate_max = 48000,
+ .channels_min = 1,
+ .channels_max = 2,
+ .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_pcm **rpcm)
+{
+ 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");
+
+
+ if (rpcm)
+ *rpcm = pcm;
+ return 0;
+}
+EXPORT_SYMBOL(snd_msnd_pcm);
+