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Diffstat (limited to 'sound/oss/emu10k1/passthrough.c')
-rw-r--r--sound/oss/emu10k1/passthrough.c240
1 files changed, 0 insertions, 240 deletions
diff --git a/sound/oss/emu10k1/passthrough.c b/sound/oss/emu10k1/passthrough.c
deleted file mode 100644
index 6d21d4368dec..000000000000
--- a/sound/oss/emu10k1/passthrough.c
+++ /dev/null
@@ -1,240 +0,0 @@
-/*
- **********************************************************************
- * passthrough.c -- Emu10k1 digital passthrough
- * Copyright (C) 2001 Juha Yrjölä <jyrjola@cc.hut.fi>
- *
- **********************************************************************
- *
- * Date Author Summary of changes
- * ---- ------ ------------------
- * May 15, 2001 Juha Yrjölä base code release
- *
- **********************************************************************
- *
- * 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/module.h>
-#include <linux/poll.h>
-#include <linux/slab.h>
-#include <linux/bitops.h>
-#include <asm/io.h>
-#include <linux/sched.h>
-#include <linux/smp_lock.h>
-
-#include "hwaccess.h"
-#include "cardwo.h"
-#include "cardwi.h"
-#include "recmgr.h"
-#include "irqmgr.h"
-#include "audio.h"
-#include "8010.h"
-
-static void pt_putsamples(struct pt_data *pt, u16 *ptr, u16 left, u16 right)
-{
- unsigned int idx;
-
- ptr[pt->copyptr] = left;
- idx = pt->copyptr + PT_SAMPLES/2;
- idx %= PT_SAMPLES;
- ptr[idx] = right;
-}
-
-static inline int pt_can_write(struct pt_data *pt)
-{
- return pt->blocks_copied < pt->blocks_played + 8;
-}
-
-static int pt_wait_for_write(struct emu10k1_wavedevice *wavedev, int nonblock)
-{
- struct emu10k1_card *card = wavedev->card;
- struct pt_data *pt = &card->pt;
-
- if (nonblock && !pt_can_write(pt))
- return -EAGAIN;
- while (!pt_can_write(pt) && pt->state != PT_STATE_INACTIVE) {
- interruptible_sleep_on(&pt->wait);
- if (signal_pending(current))
- return -ERESTARTSYS;
- }
- if (pt->state == PT_STATE_INACTIVE)
- return -EAGAIN;
-
- return 0;
-}
-
-static int pt_putblock(struct emu10k1_wavedevice *wave_dev, u16 *block, int nonblock)
-{
- struct woinst *woinst = wave_dev->woinst;
- struct emu10k1_card *card = wave_dev->card;
- struct pt_data *pt = &card->pt;
- u16 *ptr = (u16 *) card->tankmem.addr;
- int i = 0, r;
- unsigned long flags;
-
- r = pt_wait_for_write(wave_dev, nonblock);
- if (r < 0)
- return r;
- spin_lock_irqsave(&card->pt.lock, flags);
- while (i < PT_BLOCKSAMPLES) {
- pt_putsamples(pt, ptr, block[2*i], block[2*i+1]);
- if (pt->copyptr == 0)
- pt->copyptr = PT_SAMPLES;
- pt->copyptr--;
- i++;
- }
- woinst->total_copied += PT_BLOCKSIZE;
- pt->blocks_copied++;
- if (pt->blocks_copied >= 4 && pt->state != PT_STATE_PLAYING) {
- DPF(2, "activating digital pass-through playback\n");
- sblive_writeptr(card, GPR_BASE + pt->enable_gpr, 0, 1);
- pt->state = PT_STATE_PLAYING;
- }
- spin_unlock_irqrestore(&card->pt.lock, flags);
- return 0;
-}
-
-int emu10k1_pt_setup(struct emu10k1_wavedevice *wave_dev)
-{
- u32 bits;
- struct emu10k1_card *card = wave_dev->card;
- struct pt_data *pt = &card->pt;
- int i;
-
- for (i = 0; i < 3; i++) {
- pt->old_spcs[i] = sblive_readptr(card, SPCS0 + i, 0);
- if (pt->spcs_to_use & (1 << i)) {
- DPD(2, "using S/PDIF port %d\n", i);
- bits = SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
- SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC | SPCS_GENERATIONSTATUS |
- 0x00001200 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT;
- if (pt->ac3data)
- bits |= SPCS_NOTAUDIODATA;
- sblive_writeptr(card, SPCS0 + i, 0, bits);
- }
- }
- return 0;
-}
-
-ssize_t emu10k1_pt_write(struct file *file, const char __user *buffer, size_t count)
-{
- struct emu10k1_wavedevice *wave_dev = (struct emu10k1_wavedevice *) file->private_data;
- struct emu10k1_card *card = wave_dev->card;
- struct pt_data *pt = &card->pt;
- int nonblock, i, r, blocks, blocks_copied, bytes_copied = 0;
-
- DPD(3, "emu10k1_pt_write(): %d bytes\n", count);
-
- nonblock = file->f_flags & O_NONBLOCK;
-
- if (card->tankmem.size < PT_SAMPLES*2)
- return -EFAULT;
- if (pt->state == PT_STATE_INACTIVE) {
- DPF(2, "bufptr init\n");
- pt->playptr = PT_SAMPLES-1;
- pt->copyptr = PT_INITPTR;
- pt->blocks_played = pt->blocks_copied = 0;
- memset(card->tankmem.addr, 0, card->tankmem.size);
- pt->state = PT_STATE_ACTIVATED;
- pt->buf = kmalloc(PT_BLOCKSIZE, GFP_KERNEL);
- pt->prepend_size = 0;
- if (pt->buf == NULL)
- return -ENOMEM;
- emu10k1_pt_setup(wave_dev);
- }
- if (pt->prepend_size) {
- int needed = PT_BLOCKSIZE - pt->prepend_size;
-
- DPD(3, "prepend size %d, prepending %d bytes\n", pt->prepend_size, needed);
- if (count < needed) {
- if (copy_from_user(pt->buf + pt->prepend_size,
- buffer, count))
- return -EFAULT;
- pt->prepend_size += count;
- DPD(3, "prepend size now %d\n", pt->prepend_size);
- return count;
- }
- if (copy_from_user(pt->buf + pt->prepend_size, buffer, needed))
- return -EFAULT;
- r = pt_putblock(wave_dev, (u16 *) pt->buf, nonblock);
- if (r)
- return r;
- bytes_copied += needed;
- pt->prepend_size = 0;
- }
- blocks = (count-bytes_copied)/PT_BLOCKSIZE;
- blocks_copied = 0;
- while (blocks > 0) {
- u16 __user *bufptr = (u16 __user *) buffer + (bytes_copied/2);
- if (copy_from_user(pt->buf, bufptr, PT_BLOCKSIZE))
- return -EFAULT;
- r = pt_putblock(wave_dev, (u16 *)pt->buf, nonblock);
- if (r) {
- if (bytes_copied)
- return bytes_copied;
- else
- return r;
- }
- bytes_copied += PT_BLOCKSIZE;
- blocks--;
- blocks_copied++;
- }
- i = count - bytes_copied;
- if (i) {
- pt->prepend_size = i;
- if (copy_from_user(pt->buf, buffer + bytes_copied, i))
- return -EFAULT;
- bytes_copied += i;
- DPD(3, "filling prepend buffer with %d bytes", i);
- }
- return bytes_copied;
-}
-
-void emu10k1_pt_stop(struct emu10k1_card *card)
-{
- struct pt_data *pt = &card->pt;
- int i;
-
- if (pt->state != PT_STATE_INACTIVE) {
- DPF(2, "digital pass-through stopped\n");
- sblive_writeptr(card, (card->is_audigy ? A_GPR_BASE : GPR_BASE) + pt->enable_gpr, 0, 0);
- for (i = 0; i < 3; i++) {
- if (pt->spcs_to_use & (1 << i))
- sblive_writeptr(card, SPCS0 + i, 0, pt->old_spcs[i]);
- }
- pt->state = PT_STATE_INACTIVE;
- kfree(pt->buf);
- }
-}
-
-void emu10k1_pt_waveout_update(struct emu10k1_wavedevice *wave_dev)
-{
- struct woinst *woinst = wave_dev->woinst;
- struct pt_data *pt = &wave_dev->card->pt;
- u32 pos;
-
- if (pt->state == PT_STATE_PLAYING && pt->pos_gpr >= 0) {
- pos = sblive_readptr(wave_dev->card, GPR_BASE + pt->pos_gpr, 0);
- if (pos > PT_BLOCKSAMPLES)
- pos = PT_BLOCKSAMPLES;
- pos = 4 * (PT_BLOCKSAMPLES - pos);
- } else
- pos = 0;
- woinst->total_played = pt->blocks_played * woinst->buffer.fragment_size + pos;
- woinst->buffer.hw_pos = pos;
-}
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