Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/sound/oss/emu10k1/cardwi.c b/sound/oss/emu10k1/cardwi.c
new file mode 100644
index 0000000..8bbf44b
--- /dev/null
+++ b/sound/oss/emu10k1/cardwi.c
@@ -0,0 +1,373 @@
+/*
+ **********************************************************************
+ * cardwi.c - PCM input HAL for emu10k1 driver
+ * Copyright 1999, 2000 Creative Labs, Inc.
+ *
+ **********************************************************************
+ *
+ * Date Author Summary of changes
+ * ---- ------ ------------------
+ * October 20, 1999 Bertrand Lee 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/poll.h>
+#include "hwaccess.h"
+#include "timer.h"
+#include "recmgr.h"
+#include "audio.h"
+#include "cardwi.h"
+
+/**
+ * query_format - returns a valid sound format
+ *
+ * This function will return a valid sound format as close
+ * to the requested one as possible.
+ */
+static void query_format(int recsrc, struct wave_format *wave_fmt)
+{
+
+ switch (recsrc) {
+ case WAVERECORD_AC97:
+
+ if ((wave_fmt->channels != 1) && (wave_fmt->channels != 2))
+ wave_fmt->channels = 2;
+
+ if (wave_fmt->samplingrate >= (0xBB80 + 0xAC44) / 2)
+ wave_fmt->samplingrate = 0xBB80;
+ else if (wave_fmt->samplingrate >= (0xAC44 + 0x7D00) / 2)
+ wave_fmt->samplingrate = 0xAC44;
+ else if (wave_fmt->samplingrate >= (0x7D00 + 0x5DC0) / 2)
+ wave_fmt->samplingrate = 0x7D00;
+ else if (wave_fmt->samplingrate >= (0x5DC0 + 0x5622) / 2)
+ wave_fmt->samplingrate = 0x5DC0;
+ else if (wave_fmt->samplingrate >= (0x5622 + 0x3E80) / 2)
+ wave_fmt->samplingrate = 0x5622;
+ else if (wave_fmt->samplingrate >= (0x3E80 + 0x2B11) / 2)
+ wave_fmt->samplingrate = 0x3E80;
+ else if (wave_fmt->samplingrate >= (0x2B11 + 0x1F40) / 2)
+ wave_fmt->samplingrate = 0x2B11;
+ else
+ wave_fmt->samplingrate = 0x1F40;
+
+ switch (wave_fmt->id) {
+ case AFMT_S16_LE:
+ wave_fmt->bitsperchannel = 16;
+ break;
+ case AFMT_U8:
+ wave_fmt->bitsperchannel = 8;
+ break;
+ default:
+ wave_fmt->id = AFMT_S16_LE;
+ wave_fmt->bitsperchannel = 16;
+ break;
+ }
+
+ break;
+
+ /* these can't be changed from the original values */
+ case WAVERECORD_MIC:
+ case WAVERECORD_FX:
+ break;
+
+ default:
+ BUG();
+ break;
+ }
+
+ wave_fmt->bytesperchannel = wave_fmt->bitsperchannel >> 3;
+ wave_fmt->bytespersample = wave_fmt->channels * wave_fmt->bytesperchannel;
+ wave_fmt->bytespersec = wave_fmt->bytespersample * wave_fmt->samplingrate;
+ wave_fmt->bytespervoicesample = wave_fmt->bytespersample;
+}
+
+static int alloc_buffer(struct emu10k1_card *card, struct wavein_buffer *buffer)
+{
+ buffer->addr = pci_alloc_consistent(card->pci_dev, buffer->size * buffer->cov,
+ &buffer->dma_handle);
+ if (buffer->addr == NULL)
+ return -1;
+
+ return 0;
+}
+
+static void free_buffer(struct emu10k1_card *card, struct wavein_buffer *buffer)
+{
+ if (buffer->addr != NULL)
+ pci_free_consistent(card->pci_dev, buffer->size * buffer->cov,
+ buffer->addr, buffer->dma_handle);
+}
+
+int emu10k1_wavein_open(struct emu10k1_wavedevice *wave_dev)
+{
+ struct emu10k1_card *card = wave_dev->card;
+ struct wiinst *wiinst = wave_dev->wiinst;
+ struct wiinst **wiinst_tmp = NULL;
+ u16 delay;
+ unsigned long flags;
+
+ DPF(2, "emu10k1_wavein_open()\n");
+
+ switch (wiinst->recsrc) {
+ case WAVERECORD_AC97:
+ wiinst_tmp = &card->wavein.ac97;
+ break;
+ case WAVERECORD_MIC:
+ wiinst_tmp = &card->wavein.mic;
+ break;
+ case WAVERECORD_FX:
+ wiinst_tmp = &card->wavein.fx;
+ break;
+ default:
+ BUG();
+ break;
+ }
+
+ spin_lock_irqsave(&card->lock, flags);
+ if (*wiinst_tmp != NULL) {
+ spin_unlock_irqrestore(&card->lock, flags);
+ return -1;
+ }
+
+ *wiinst_tmp = wiinst;
+ spin_unlock_irqrestore(&card->lock, flags);
+
+ /* handle 8 bit recording */
+ if (wiinst->format.bytesperchannel == 1) {
+ if (wiinst->buffer.size > 0x8000) {
+ wiinst->buffer.size = 0x8000;
+ wiinst->buffer.sizeregval = 0x1f;
+ } else
+ wiinst->buffer.sizeregval += 4;
+
+ wiinst->buffer.cov = 2;
+ } else
+ wiinst->buffer.cov = 1;
+
+ if (alloc_buffer(card, &wiinst->buffer) < 0) {
+ ERROR();
+ return -1;
+ }
+
+ emu10k1_set_record_src(card, wiinst);
+
+ emu10k1_reset_record(card, &wiinst->buffer);
+
+ wiinst->buffer.hw_pos = 0;
+ wiinst->buffer.pos = 0;
+ wiinst->buffer.bytestocopy = 0;
+
+ delay = (48000 * wiinst->buffer.fragment_size) / wiinst->format.bytespersec;
+
+ emu10k1_timer_install(card, &wiinst->timer, delay / 2);
+
+ wiinst->state = WAVE_STATE_OPEN;
+
+ return 0;
+}
+
+void emu10k1_wavein_close(struct emu10k1_wavedevice *wave_dev)
+{
+ struct emu10k1_card *card = wave_dev->card;
+ struct wiinst *wiinst = wave_dev->wiinst;
+ unsigned long flags;
+
+ DPF(2, "emu10k1_wavein_close()\n");
+
+ emu10k1_wavein_stop(wave_dev);
+
+ emu10k1_timer_uninstall(card, &wiinst->timer);
+
+ free_buffer(card, &wiinst->buffer);
+
+ spin_lock_irqsave(&card->lock, flags);
+ switch (wave_dev->wiinst->recsrc) {
+ case WAVERECORD_AC97:
+ card->wavein.ac97 = NULL;
+ break;
+ case WAVERECORD_MIC:
+ card->wavein.mic = NULL;
+ break;
+ case WAVERECORD_FX:
+ card->wavein.fx = NULL;
+ break;
+ default:
+ BUG();
+ break;
+ }
+ spin_unlock_irqrestore(&card->lock, flags);
+
+ wiinst->state = WAVE_STATE_CLOSED;
+}
+
+void emu10k1_wavein_start(struct emu10k1_wavedevice *wave_dev)
+{
+ struct emu10k1_card *card = wave_dev->card;
+ struct wiinst *wiinst = wave_dev->wiinst;
+
+ DPF(2, "emu10k1_wavein_start()\n");
+
+ emu10k1_start_record(card, &wiinst->buffer);
+ emu10k1_timer_enable(wave_dev->card, &wiinst->timer);
+
+ wiinst->state |= WAVE_STATE_STARTED;
+}
+
+void emu10k1_wavein_stop(struct emu10k1_wavedevice *wave_dev)
+{
+ struct emu10k1_card *card = wave_dev->card;
+ struct wiinst *wiinst = wave_dev->wiinst;
+
+ DPF(2, "emu10k1_wavein_stop()\n");
+
+ if (!(wiinst->state & WAVE_STATE_STARTED))
+ return;
+
+ emu10k1_timer_disable(card, &wiinst->timer);
+ emu10k1_stop_record(card, &wiinst->buffer);
+
+ wiinst->state &= ~WAVE_STATE_STARTED;
+}
+
+int emu10k1_wavein_setformat(struct emu10k1_wavedevice *wave_dev, struct wave_format *format)
+{
+ struct emu10k1_card *card = wave_dev->card;
+ struct wiinst *wiinst = wave_dev->wiinst;
+ u16 delay;
+
+ DPF(2, "emu10k1_wavein_setformat()\n");
+
+ if (wiinst->state & WAVE_STATE_STARTED)
+ return -1;
+
+ query_format(wiinst->recsrc, format);
+
+ if ((wiinst->format.samplingrate != format->samplingrate)
+ || (wiinst->format.bitsperchannel != format->bitsperchannel)
+ || (wiinst->format.channels != format->channels)) {
+
+ wiinst->format = *format;
+
+ if (wiinst->state == WAVE_STATE_CLOSED)
+ return 0;
+
+ wiinst->buffer.size *= wiinst->buffer.cov;
+
+ if (wiinst->format.bytesperchannel == 1) {
+ wiinst->buffer.cov = 2;
+ wiinst->buffer.size /= wiinst->buffer.cov;
+ } else
+ wiinst->buffer.cov = 1;
+
+ emu10k1_timer_uninstall(card, &wiinst->timer);
+
+ delay = (48000 * wiinst->buffer.fragment_size) / wiinst->format.bytespersec;
+
+ emu10k1_timer_install(card, &wiinst->timer, delay / 2);
+ }
+
+ return 0;
+}
+
+void emu10k1_wavein_getxfersize(struct wiinst *wiinst, u32 * size)
+{
+ struct wavein_buffer *buffer = &wiinst->buffer;
+
+ *size = buffer->bytestocopy;
+
+ if (wiinst->mmapped)
+ return;
+
+ if (*size > buffer->size) {
+ *size = buffer->size;
+ buffer->pos = buffer->hw_pos;
+ buffer->bytestocopy = buffer->size;
+ DPF(1, "buffer overrun\n");
+ }
+}
+
+static void copy_block(u8 __user *dst, u8 * src, u32 str, u32 len, u8 cov)
+{
+ if (cov == 1)
+ __copy_to_user(dst, src + str, len);
+ else {
+ u8 byte;
+ u32 i;
+
+ src += 1 + 2 * str;
+
+ for (i = 0; i < len; i++) {
+ byte = src[2 * i] ^ 0x80;
+ __copy_to_user(dst + i, &byte, 1);
+ }
+ }
+}
+
+void emu10k1_wavein_xferdata(struct wiinst *wiinst, u8 __user *data, u32 * size)
+{
+ struct wavein_buffer *buffer = &wiinst->buffer;
+ u32 sizetocopy, sizetocopy_now, start;
+ unsigned long flags;
+
+ sizetocopy = min_t(u32, buffer->size, *size);
+ *size = sizetocopy;
+
+ if (!sizetocopy)
+ return;
+
+ spin_lock_irqsave(&wiinst->lock, flags);
+ start = buffer->pos;
+ buffer->pos += sizetocopy;
+ buffer->pos %= buffer->size;
+ buffer->bytestocopy -= sizetocopy;
+ sizetocopy_now = buffer->size - start;
+
+ spin_unlock_irqrestore(&wiinst->lock, flags);
+
+ if (sizetocopy > sizetocopy_now) {
+ sizetocopy -= sizetocopy_now;
+
+ copy_block(data, buffer->addr, start, sizetocopy_now, buffer->cov);
+ copy_block(data + sizetocopy_now, buffer->addr, 0, sizetocopy, buffer->cov);
+ } else {
+ copy_block(data, buffer->addr, start, sizetocopy, buffer->cov);
+ }
+}
+
+void emu10k1_wavein_update(struct emu10k1_card *card, struct wiinst *wiinst)
+{
+ u32 hw_pos;
+ u32 diff;
+
+ /* There is no actual start yet */
+ if (!(wiinst->state & WAVE_STATE_STARTED)) {
+ hw_pos = wiinst->buffer.hw_pos;
+ } else {
+ /* hw_pos in byte units */
+ hw_pos = sblive_readptr(card, wiinst->buffer.idxreg, 0) / wiinst->buffer.cov;
+ }
+
+ diff = (wiinst->buffer.size + hw_pos - wiinst->buffer.hw_pos) % wiinst->buffer.size;
+ wiinst->total_recorded += diff;
+ wiinst->buffer.bytestocopy += diff;
+
+ wiinst->buffer.hw_pos = hw_pos;
+}