[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/os/linux/linux-3.4.x/sound/mips/au1x00.c b/ap/os/linux/linux-3.4.x/sound/mips/au1x00.c
new file mode 100644
index 0000000..3f3ec0b
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/sound/mips/au1x00.c
@@ -0,0 +1,696 @@
+/*
+ * BRIEF MODULE DESCRIPTION
+ * Driver for AMD Au1000 MIPS Processor, AC'97 Sound Port
+ *
+ * Copyright 2004 Cooper Street Innovations Inc.
+ * Author: Charles Eidsness <charles@cooper-street.com>
+ *
+ * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * 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.
+ *
+ * History:
+ *
+ * 2004-09-09 Charles Eidsness -- Original verion -- based on
+ * sa11xx-uda1341.c ALSA driver and the
+ * au1000.c OSS driver.
+ * 2004-09-09 Matt Porter -- Added support for ALSA 1.0.6
+ *
+ */
+
+#include <linux/ioport.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <sound/core.h>
+#include <sound/initval.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/ac97_codec.h>
+#include <asm/mach-au1x00/au1000.h>
+#include <asm/mach-au1x00/au1000_dma.h>
+
+MODULE_AUTHOR("Charles Eidsness <charles@cooper-street.com>");
+MODULE_DESCRIPTION("Au1000 AC'97 ALSA Driver");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("{{AMD,Au1000 AC'97}}");
+
+#define PLAYBACK 0
+#define CAPTURE 1
+#define AC97_SLOT_3 0x01
+#define AC97_SLOT_4 0x02
+#define AC97_SLOT_6 0x08
+#define AC97_CMD_IRQ 31
+#define READ 0
+#define WRITE 1
+#define READ_WAIT 2
+#define RW_DONE 3
+
+struct au1000_period
+{
+ u32 start;
+ u32 relative_end; /*realtive to start of buffer*/
+ struct au1000_period * next;
+};
+
+/*Au1000 AC97 Port Control Reisters*/
+struct au1000_ac97_reg {
+ u32 volatile config;
+ u32 volatile status;
+ u32 volatile data;
+ u32 volatile cmd;
+ u32 volatile cntrl;
+};
+
+struct audio_stream {
+ struct snd_pcm_substream *substream;
+ int dma;
+ spinlock_t dma_lock;
+ struct au1000_period * buffer;
+ unsigned int period_size;
+ unsigned int periods;
+};
+
+struct snd_au1000 {
+ struct snd_card *card;
+ struct au1000_ac97_reg volatile *ac97_ioport;
+
+ struct resource *ac97_res_port;
+ spinlock_t ac97_lock;
+ struct snd_ac97 *ac97;
+
+ struct snd_pcm *pcm;
+ struct audio_stream *stream[2]; /* playback & capture */
+};
+
+/*--------------------------- Local Functions --------------------------------*/
+static void
+au1000_set_ac97_xmit_slots(struct snd_au1000 *au1000, long xmit_slots)
+{
+ u32 volatile ac97_config;
+
+ spin_lock(&au1000->ac97_lock);
+ ac97_config = au1000->ac97_ioport->config;
+ ac97_config = ac97_config & ~AC97C_XMIT_SLOTS_MASK;
+ ac97_config |= (xmit_slots << AC97C_XMIT_SLOTS_BIT);
+ au1000->ac97_ioport->config = ac97_config;
+ spin_unlock(&au1000->ac97_lock);
+}
+
+static void
+au1000_set_ac97_recv_slots(struct snd_au1000 *au1000, long recv_slots)
+{
+ u32 volatile ac97_config;
+
+ spin_lock(&au1000->ac97_lock);
+ ac97_config = au1000->ac97_ioport->config;
+ ac97_config = ac97_config & ~AC97C_RECV_SLOTS_MASK;
+ ac97_config |= (recv_slots << AC97C_RECV_SLOTS_BIT);
+ au1000->ac97_ioport->config = ac97_config;
+ spin_unlock(&au1000->ac97_lock);
+}
+
+
+static void
+au1000_release_dma_link(struct audio_stream *stream)
+{
+ struct au1000_period * pointer;
+ struct au1000_period * pointer_next;
+
+ stream->period_size = 0;
+ stream->periods = 0;
+ pointer = stream->buffer;
+ if (! pointer)
+ return;
+ do {
+ pointer_next = pointer->next;
+ kfree(pointer);
+ pointer = pointer_next;
+ } while (pointer != stream->buffer);
+ stream->buffer = NULL;
+}
+
+static int
+au1000_setup_dma_link(struct audio_stream *stream, unsigned int period_bytes,
+ unsigned int periods)
+{
+ struct snd_pcm_substream *substream = stream->substream;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct au1000_period *pointer;
+ unsigned long dma_start;
+ int i;
+
+ dma_start = virt_to_phys(runtime->dma_area);
+
+ if (stream->period_size == period_bytes &&
+ stream->periods == periods)
+ return 0; /* not changed */
+
+ au1000_release_dma_link(stream);
+
+ stream->period_size = period_bytes;
+ stream->periods = periods;
+
+ stream->buffer = kmalloc(sizeof(struct au1000_period), GFP_KERNEL);
+ if (! stream->buffer)
+ return -ENOMEM;
+ pointer = stream->buffer;
+ for (i = 0; i < periods; i++) {
+ pointer->start = (u32)(dma_start + (i * period_bytes));
+ pointer->relative_end = (u32) (((i+1) * period_bytes) - 0x1);
+ if (i < periods - 1) {
+ pointer->next = kmalloc(sizeof(struct au1000_period), GFP_KERNEL);
+ if (! pointer->next) {
+ au1000_release_dma_link(stream);
+ return -ENOMEM;
+ }
+ pointer = pointer->next;
+ }
+ }
+ pointer->next = stream->buffer;
+ return 0;
+}
+
+static void
+au1000_dma_stop(struct audio_stream *stream)
+{
+ if (snd_BUG_ON(!stream->buffer))
+ return;
+ disable_dma(stream->dma);
+}
+
+static void
+au1000_dma_start(struct audio_stream *stream)
+{
+ if (snd_BUG_ON(!stream->buffer))
+ return;
+
+ init_dma(stream->dma);
+ if (get_dma_active_buffer(stream->dma) == 0) {
+ clear_dma_done0(stream->dma);
+ set_dma_addr0(stream->dma, stream->buffer->start);
+ set_dma_count0(stream->dma, stream->period_size >> 1);
+ set_dma_addr1(stream->dma, stream->buffer->next->start);
+ set_dma_count1(stream->dma, stream->period_size >> 1);
+ } else {
+ clear_dma_done1(stream->dma);
+ set_dma_addr1(stream->dma, stream->buffer->start);
+ set_dma_count1(stream->dma, stream->period_size >> 1);
+ set_dma_addr0(stream->dma, stream->buffer->next->start);
+ set_dma_count0(stream->dma, stream->period_size >> 1);
+ }
+ enable_dma_buffers(stream->dma);
+ start_dma(stream->dma);
+}
+
+static irqreturn_t
+au1000_dma_interrupt(int irq, void *dev_id)
+{
+ struct audio_stream *stream = (struct audio_stream *) dev_id;
+ struct snd_pcm_substream *substream = stream->substream;
+
+ spin_lock(&stream->dma_lock);
+ switch (get_dma_buffer_done(stream->dma)) {
+ case DMA_D0:
+ stream->buffer = stream->buffer->next;
+ clear_dma_done0(stream->dma);
+ set_dma_addr0(stream->dma, stream->buffer->next->start);
+ set_dma_count0(stream->dma, stream->period_size >> 1);
+ enable_dma_buffer0(stream->dma);
+ break;
+ case DMA_D1:
+ stream->buffer = stream->buffer->next;
+ clear_dma_done1(stream->dma);
+ set_dma_addr1(stream->dma, stream->buffer->next->start);
+ set_dma_count1(stream->dma, stream->period_size >> 1);
+ enable_dma_buffer1(stream->dma);
+ break;
+ case (DMA_D0 | DMA_D1):
+ printk(KERN_ERR "DMA %d missed interrupt.\n",stream->dma);
+ au1000_dma_stop(stream);
+ au1000_dma_start(stream);
+ break;
+ case (~DMA_D0 & ~DMA_D1):
+ printk(KERN_ERR "DMA %d empty irq.\n",stream->dma);
+ }
+ spin_unlock(&stream->dma_lock);
+ snd_pcm_period_elapsed(substream);
+ return IRQ_HANDLED;
+}
+
+/*-------------------------- PCM Audio Streams -------------------------------*/
+
+static unsigned int rates[] = {8000, 11025, 16000, 22050};
+static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
+ .count = ARRAY_SIZE(rates),
+ .list = rates,
+ .mask = 0,
+};
+
+static struct snd_pcm_hardware snd_au1000_hw =
+{
+ .info = (SNDRV_PCM_INFO_INTERLEAVED | \
+ SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID),
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |
+ SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050),
+ .rate_min = 8000,
+ .rate_max = 22050,
+ .channels_min = 1,
+ .channels_max = 2,
+ .buffer_bytes_max = 128*1024,
+ .period_bytes_min = 32,
+ .period_bytes_max = 16*1024,
+ .periods_min = 8,
+ .periods_max = 255,
+ .fifo_size = 16,
+};
+
+static int
+snd_au1000_playback_open(struct snd_pcm_substream *substream)
+{
+ struct snd_au1000 *au1000 = substream->pcm->private_data;
+
+ au1000->stream[PLAYBACK]->substream = substream;
+ au1000->stream[PLAYBACK]->buffer = NULL;
+ substream->private_data = au1000->stream[PLAYBACK];
+ substream->runtime->hw = snd_au1000_hw;
+ return (snd_pcm_hw_constraint_list(substream->runtime, 0,
+ SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates) < 0);
+}
+
+static int
+snd_au1000_capture_open(struct snd_pcm_substream *substream)
+{
+ struct snd_au1000 *au1000 = substream->pcm->private_data;
+
+ au1000->stream[CAPTURE]->substream = substream;
+ au1000->stream[CAPTURE]->buffer = NULL;
+ substream->private_data = au1000->stream[CAPTURE];
+ substream->runtime->hw = snd_au1000_hw;
+ return (snd_pcm_hw_constraint_list(substream->runtime, 0,
+ SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates) < 0);
+}
+
+static int
+snd_au1000_playback_close(struct snd_pcm_substream *substream)
+{
+ struct snd_au1000 *au1000 = substream->pcm->private_data;
+
+ au1000->stream[PLAYBACK]->substream = NULL;
+ return 0;
+}
+
+static int
+snd_au1000_capture_close(struct snd_pcm_substream *substream)
+{
+ struct snd_au1000 *au1000 = substream->pcm->private_data;
+
+ au1000->stream[CAPTURE]->substream = NULL;
+ return 0;
+}
+
+static int
+snd_au1000_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *hw_params)
+{
+ struct audio_stream *stream = substream->private_data;
+ int err;
+
+ err = snd_pcm_lib_malloc_pages(substream,
+ params_buffer_bytes(hw_params));
+ if (err < 0)
+ return err;
+ return au1000_setup_dma_link(stream,
+ params_period_bytes(hw_params),
+ params_periods(hw_params));
+}
+
+static int
+snd_au1000_hw_free(struct snd_pcm_substream *substream)
+{
+ struct audio_stream *stream = substream->private_data;
+ au1000_release_dma_link(stream);
+ return snd_pcm_lib_free_pages(substream);
+}
+
+static int
+snd_au1000_playback_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_au1000 *au1000 = substream->pcm->private_data;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+
+ if (runtime->channels == 1)
+ au1000_set_ac97_xmit_slots(au1000, AC97_SLOT_4);
+ else
+ au1000_set_ac97_xmit_slots(au1000, AC97_SLOT_3 | AC97_SLOT_4);
+ snd_ac97_set_rate(au1000->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
+ return 0;
+}
+
+static int
+snd_au1000_capture_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_au1000 *au1000 = substream->pcm->private_data;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+
+ if (runtime->channels == 1)
+ au1000_set_ac97_recv_slots(au1000, AC97_SLOT_4);
+ else
+ au1000_set_ac97_recv_slots(au1000, AC97_SLOT_3 | AC97_SLOT_4);
+ snd_ac97_set_rate(au1000->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
+ return 0;
+}
+
+static int
+snd_au1000_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+ struct audio_stream *stream = substream->private_data;
+ int err = 0;
+
+ spin_lock(&stream->dma_lock);
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ au1000_dma_start(stream);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ au1000_dma_stop(stream);
+ break;
+ default:
+ err = -EINVAL;
+ break;
+ }
+ spin_unlock(&stream->dma_lock);
+ return err;
+}
+
+static snd_pcm_uframes_t
+snd_au1000_pointer(struct snd_pcm_substream *substream)
+{
+ struct audio_stream *stream = substream->private_data;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ long location;
+
+ spin_lock(&stream->dma_lock);
+ location = get_dma_residue(stream->dma);
+ spin_unlock(&stream->dma_lock);
+ location = stream->buffer->relative_end - location;
+ if (location == -1)
+ location = 0;
+ return bytes_to_frames(runtime,location);
+}
+
+static struct snd_pcm_ops snd_card_au1000_playback_ops = {
+ .open = snd_au1000_playback_open,
+ .close = snd_au1000_playback_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_au1000_hw_params,
+ .hw_free = snd_au1000_hw_free,
+ .prepare = snd_au1000_playback_prepare,
+ .trigger = snd_au1000_trigger,
+ .pointer = snd_au1000_pointer,
+};
+
+static struct snd_pcm_ops snd_card_au1000_capture_ops = {
+ .open = snd_au1000_capture_open,
+ .close = snd_au1000_capture_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_au1000_hw_params,
+ .hw_free = snd_au1000_hw_free,
+ .prepare = snd_au1000_capture_prepare,
+ .trigger = snd_au1000_trigger,
+ .pointer = snd_au1000_pointer,
+};
+
+static int __devinit
+snd_au1000_pcm_new(struct snd_au1000 *au1000)
+{
+ struct snd_pcm *pcm;
+ int err;
+ unsigned long flags;
+
+ if ((err = snd_pcm_new(au1000->card, "AU1000 AC97 PCM", 0, 1, 1, &pcm)) < 0)
+ return err;
+
+ snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
+ snd_dma_continuous_data(GFP_KERNEL), 128*1024, 128*1024);
+
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
+ &snd_card_au1000_playback_ops);
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
+ &snd_card_au1000_capture_ops);
+
+ pcm->private_data = au1000;
+ pcm->info_flags = 0;
+ strcpy(pcm->name, "Au1000 AC97 PCM");
+
+ spin_lock_init(&au1000->stream[PLAYBACK]->dma_lock);
+ spin_lock_init(&au1000->stream[CAPTURE]->dma_lock);
+
+ flags = claim_dma_lock();
+ if ((au1000->stream[PLAYBACK]->dma = request_au1000_dma(DMA_ID_AC97C_TX,
+ "AC97 TX", au1000_dma_interrupt, 0,
+ au1000->stream[PLAYBACK])) < 0) {
+ release_dma_lock(flags);
+ return -EBUSY;
+ }
+ if ((au1000->stream[CAPTURE]->dma = request_au1000_dma(DMA_ID_AC97C_RX,
+ "AC97 RX", au1000_dma_interrupt, 0,
+ au1000->stream[CAPTURE])) < 0){
+ release_dma_lock(flags);
+ return -EBUSY;
+ }
+ /* enable DMA coherency in read/write DMA channels */
+ set_dma_mode(au1000->stream[PLAYBACK]->dma,
+ get_dma_mode(au1000->stream[PLAYBACK]->dma) & ~DMA_NC);
+ set_dma_mode(au1000->stream[CAPTURE]->dma,
+ get_dma_mode(au1000->stream[CAPTURE]->dma) & ~DMA_NC);
+ release_dma_lock(flags);
+ au1000->pcm = pcm;
+ return 0;
+}
+
+
+/*-------------------------- AC97 CODEC Control ------------------------------*/
+
+static unsigned short
+snd_au1000_ac97_read(struct snd_ac97 *ac97, unsigned short reg)
+{
+ struct snd_au1000 *au1000 = ac97->private_data;
+ u32 volatile cmd;
+ u16 volatile data;
+ int i;
+
+ spin_lock(&au1000->ac97_lock);
+/* would rather use the interrupt than this polling but it works and I can't
+get the interrupt driven case to work efficiently */
+ for (i = 0; i < 0x5000; i++)
+ if (!(au1000->ac97_ioport->status & AC97C_CP))
+ break;
+ if (i == 0x5000)
+ printk(KERN_ERR "au1000 AC97: AC97 command read timeout\n");
+
+ cmd = (u32) reg & AC97C_INDEX_MASK;
+ cmd |= AC97C_READ;
+ au1000->ac97_ioport->cmd = cmd;
+
+ /* now wait for the data */
+ for (i = 0; i < 0x5000; i++)
+ if (!(au1000->ac97_ioport->status & AC97C_CP))
+ break;
+ if (i == 0x5000) {
+ printk(KERN_ERR "au1000 AC97: AC97 command read timeout\n");
+ spin_unlock(&au1000->ac97_lock);
+ return 0;
+ }
+
+ data = au1000->ac97_ioport->cmd & 0xffff;
+ spin_unlock(&au1000->ac97_lock);
+
+ return data;
+
+}
+
+
+static void
+snd_au1000_ac97_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short val)
+{
+ struct snd_au1000 *au1000 = ac97->private_data;
+ u32 cmd;
+ int i;
+
+ spin_lock(&au1000->ac97_lock);
+/* would rather use the interrupt than this polling but it works and I can't
+get the interrupt driven case to work efficiently */
+ for (i = 0; i < 0x5000; i++)
+ if (!(au1000->ac97_ioport->status & AC97C_CP))
+ break;
+ if (i == 0x5000)
+ printk(KERN_ERR "au1000 AC97: AC97 command write timeout\n");
+
+ cmd = (u32) reg & AC97C_INDEX_MASK;
+ cmd &= ~AC97C_READ;
+ cmd |= ((u32) val << AC97C_WD_BIT);
+ au1000->ac97_ioport->cmd = cmd;
+ spin_unlock(&au1000->ac97_lock);
+}
+
+static int __devinit
+snd_au1000_ac97_new(struct snd_au1000 *au1000)
+{
+ int err;
+ struct snd_ac97_bus *pbus;
+ struct snd_ac97_template ac97;
+ static struct snd_ac97_bus_ops ops = {
+ .write = snd_au1000_ac97_write,
+ .read = snd_au1000_ac97_read,
+ };
+
+ if ((au1000->ac97_res_port = request_mem_region(CPHYSADDR(AC97C_CONFIG),
+ 0x100000, "Au1x00 AC97")) == NULL) {
+ snd_printk(KERN_ERR "ALSA AC97: can't grap AC97 port\n");
+ return -EBUSY;
+ }
+ au1000->ac97_ioport = (struct au1000_ac97_reg *)
+ KSEG1ADDR(au1000->ac97_res_port->start);
+
+ spin_lock_init(&au1000->ac97_lock);
+
+ /* configure pins for AC'97
+ TODO: move to board_setup.c */
+ au_writel(au_readl(SYS_PINFUNC) & ~0x02, SYS_PINFUNC);
+
+ /* Initialise Au1000's AC'97 Control Block */
+ au1000->ac97_ioport->cntrl = AC97C_RS | AC97C_CE;
+ udelay(10);
+ au1000->ac97_ioport->cntrl = AC97C_CE;
+ udelay(10);
+
+ /* Initialise External CODEC -- cold reset */
+ au1000->ac97_ioport->config = AC97C_RESET;
+ udelay(10);
+ au1000->ac97_ioport->config = 0x0;
+ mdelay(5);
+
+ /* Initialise AC97 middle-layer */
+ if ((err = snd_ac97_bus(au1000->card, 0, &ops, au1000, &pbus)) < 0)
+ return err;
+
+ memset(&ac97, 0, sizeof(ac97));
+ ac97.private_data = au1000;
+ if ((err = snd_ac97_mixer(pbus, &ac97, &au1000->ac97)) < 0)
+ return err;
+
+ return 0;
+}
+
+/*------------------------------ Setup / Destroy ----------------------------*/
+
+void
+snd_au1000_free(struct snd_card *card)
+{
+ struct snd_au1000 *au1000 = card->private_data;
+
+ if (au1000->ac97_res_port) {
+ /* put internal AC97 block into reset */
+ au1000->ac97_ioport->cntrl = AC97C_RS;
+ au1000->ac97_ioport = NULL;
+ release_and_free_resource(au1000->ac97_res_port);
+ }
+
+ if (au1000->stream[PLAYBACK]) {
+ if (au1000->stream[PLAYBACK]->dma >= 0)
+ free_au1000_dma(au1000->stream[PLAYBACK]->dma);
+ kfree(au1000->stream[PLAYBACK]);
+ }
+
+ if (au1000->stream[CAPTURE]) {
+ if (au1000->stream[CAPTURE]->dma >= 0)
+ free_au1000_dma(au1000->stream[CAPTURE]->dma);
+ kfree(au1000->stream[CAPTURE]);
+ }
+}
+
+
+static struct snd_card *au1000_card;
+
+static int __init
+au1000_init(void)
+{
+ int err;
+ struct snd_card *card;
+ struct snd_au1000 *au1000;
+
+ err = snd_card_create(-1, "AC97", THIS_MODULE,
+ sizeof(struct snd_au1000), &card);
+ if (err < 0)
+ return err;
+
+ card->private_free = snd_au1000_free;
+ au1000 = card->private_data;
+ au1000->card = card;
+
+ au1000->stream[PLAYBACK] = kmalloc(sizeof(struct audio_stream), GFP_KERNEL);
+ au1000->stream[CAPTURE ] = kmalloc(sizeof(struct audio_stream), GFP_KERNEL);
+ /* so that snd_au1000_free will work as intended */
+ au1000->ac97_res_port = NULL;
+ if (au1000->stream[PLAYBACK])
+ au1000->stream[PLAYBACK]->dma = -1;
+ if (au1000->stream[CAPTURE ])
+ au1000->stream[CAPTURE ]->dma = -1;
+
+ if (au1000->stream[PLAYBACK] == NULL ||
+ au1000->stream[CAPTURE ] == NULL) {
+ snd_card_free(card);
+ return -ENOMEM;
+ }
+
+ if ((err = snd_au1000_ac97_new(au1000)) < 0 ) {
+ snd_card_free(card);
+ return err;
+ }
+
+ if ((err = snd_au1000_pcm_new(au1000)) < 0) {
+ snd_card_free(card);
+ return err;
+ }
+
+ strcpy(card->driver, "Au1000-AC97");
+ strcpy(card->shortname, "AMD Au1000-AC97");
+ sprintf(card->longname, "AMD Au1000--AC97 ALSA Driver");
+
+ if ((err = snd_card_register(card)) < 0) {
+ snd_card_free(card);
+ return err;
+ }
+
+ printk(KERN_INFO "ALSA AC97: Driver Initialized\n");
+ au1000_card = card;
+ return 0;
+}
+
+static void __exit au1000_exit(void)
+{
+ snd_card_free(au1000_card);
+}
+
+module_init(au1000_init);
+module_exit(au1000_exit);
+