mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
ALSA: Remove deprecated AU1X00 AC97 driver
The AU1X00 AC97 ALSA driver was deprecated in commit 7137c6bcb7 ("ALSA:
deprecate MIPS AU1X00 AC97 driver") in favor of the newer and better ASoC
driver for the same hardware. This was almost 5 years ago and this driver
has not been in use in the mainline kernel since, it should be safe to
remove it at this point.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Lars-Peter Clausen
Takashi Iwai
parent
c9e9daccc7
commit
efd931d6c7
3 changed files with 0 additions and 748 deletions
|
|
@ -23,17 +23,5 @@ config SND_SGI_HAL2
|
|||
help
|
||||
Sound support for the SGI Indy and Indigo2 Workstation.
|
||||
|
||||
|
||||
config SND_AU1X00
|
||||
tristate "Au1x00 AC97 Port Driver (DEPRECATED)"
|
||||
depends on MIPS_ALCHEMY
|
||||
select SND_PCM
|
||||
select SND_AC97_CODEC
|
||||
help
|
||||
ALSA Sound driver for the Au1x00's AC97 port.
|
||||
|
||||
Newer drivers for ASoC are available, please do not use
|
||||
this driver as it will be removed in the future.
|
||||
|
||||
endif # SND_MIPS
|
||||
|
||||
|
|
|
|||
|
|
@ -2,11 +2,9 @@
|
|||
# Makefile for ALSA
|
||||
#
|
||||
|
||||
snd-au1x00-objs := au1x00.o
|
||||
snd-sgi-o2-objs := sgio2audio.o ad1843.o
|
||||
snd-sgi-hal2-objs := hal2.o
|
||||
|
||||
# Toplevel Module Dependency
|
||||
obj-$(CONFIG_SND_AU1X00) += snd-au1x00.o
|
||||
obj-$(CONFIG_SND_SGI_O2) += snd-sgi-o2.o
|
||||
obj-$(CONFIG_SND_SGI_HAL2) += snd-sgi-hal2.o
|
||||
|
|
|
|||
|
|
@ -1,734 +0,0 @@
|
|||
/*
|
||||
* 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/platform_device.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 */
|
||||
int dmaid[2]; /* tx(0)/rx(1) DMA ids */
|
||||
};
|
||||
|
||||
/*--------------------------- 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
|
||||
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();
|
||||
au1000->stream[PLAYBACK]->dma = request_au1000_dma(au1000->dmaid[0],
|
||||
"AC97 TX", au1000_dma_interrupt, 0,
|
||||
au1000->stream[PLAYBACK]);
|
||||
if (au1000->stream[PLAYBACK]->dma < 0) {
|
||||
release_dma_lock(flags);
|
||||
return -EBUSY;
|
||||
}
|
||||
au1000->stream[CAPTURE]->dma = request_au1000_dma(au1000->dmaid[1],
|
||||
"AC97 RX", au1000_dma_interrupt, 0,
|
||||
au1000->stream[CAPTURE]);
|
||||
if (au1000->stream[CAPTURE]->dma < 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);
|
||||
}
|
||||
|
||||
/*------------------------------ Setup / Destroy ----------------------------*/
|
||||
|
||||
static void snd_au1000_free(struct snd_card *card)
|
||||
{
|
||||
struct snd_au1000 *au1000 = card->private_data;
|
||||
|
||||
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]);
|
||||
}
|
||||
|
||||
if (au1000->ac97_res_port) {
|
||||
/* put internal AC97 block into reset */
|
||||
if (au1000->ac97_ioport) {
|
||||
au1000->ac97_ioport->cntrl = AC97C_RS;
|
||||
iounmap(au1000->ac97_ioport);
|
||||
au1000->ac97_ioport = NULL;
|
||||
}
|
||||
release_and_free_resource(au1000->ac97_res_port);
|
||||
au1000->ac97_res_port = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
static struct snd_ac97_bus_ops ops = {
|
||||
.write = snd_au1000_ac97_write,
|
||||
.read = snd_au1000_ac97_read,
|
||||
};
|
||||
|
||||
static int au1000_ac97_probe(struct platform_device *pdev)
|
||||
{
|
||||
int err;
|
||||
void __iomem *io;
|
||||
struct resource *r;
|
||||
struct snd_card *card;
|
||||
struct snd_au1000 *au1000;
|
||||
struct snd_ac97_bus *pbus;
|
||||
struct snd_ac97_template ac97;
|
||||
|
||||
err = snd_card_new(&pdev->dev, -1, "AC97", THIS_MODULE,
|
||||
sizeof(struct snd_au1000), &card);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
au1000 = card->private_data;
|
||||
au1000->card = card;
|
||||
spin_lock_init(&au1000->ac97_lock);
|
||||
|
||||
/* from here on let ALSA call the special freeing function */
|
||||
card->private_free = snd_au1000_free;
|
||||
|
||||
/* TX DMA ID */
|
||||
r = platform_get_resource(pdev, IORESOURCE_DMA, 0);
|
||||
if (!r) {
|
||||
err = -ENODEV;
|
||||
snd_printk(KERN_INFO "no TX DMA platform resource!\n");
|
||||
goto out;
|
||||
}
|
||||
au1000->dmaid[0] = r->start;
|
||||
|
||||
/* RX DMA ID */
|
||||
r = platform_get_resource(pdev, IORESOURCE_DMA, 1);
|
||||
if (!r) {
|
||||
err = -ENODEV;
|
||||
snd_printk(KERN_INFO "no RX DMA platform resource!\n");
|
||||
goto out;
|
||||
}
|
||||
au1000->dmaid[1] = r->start;
|
||||
|
||||
au1000->stream[PLAYBACK] = kmalloc(sizeof(struct audio_stream),
|
||||
GFP_KERNEL);
|
||||
if (!au1000->stream[PLAYBACK]) {
|
||||
err = -ENOMEM;
|
||||
goto out;
|
||||
}
|
||||
au1000->stream[PLAYBACK]->dma = -1;
|
||||
|
||||
au1000->stream[CAPTURE] = kmalloc(sizeof(struct audio_stream),
|
||||
GFP_KERNEL);
|
||||
if (!au1000->stream[CAPTURE]) {
|
||||
err = -ENOMEM;
|
||||
goto out;
|
||||
}
|
||||
au1000->stream[CAPTURE]->dma = -1;
|
||||
|
||||
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
if (!r) {
|
||||
err = -ENODEV;
|
||||
goto out;
|
||||
}
|
||||
|
||||
err = -EBUSY;
|
||||
au1000->ac97_res_port = request_mem_region(r->start, resource_size(r),
|
||||
pdev->name);
|
||||
if (!au1000->ac97_res_port) {
|
||||
snd_printk(KERN_ERR "ALSA AC97: can't grab AC97 port\n");
|
||||
goto out;
|
||||
}
|
||||
|
||||
io = ioremap(r->start, resource_size(r));
|
||||
if (!io)
|
||||
goto out;
|
||||
|
||||
au1000->ac97_ioport = (struct au1000_ac97_reg *)io;
|
||||
|
||||
/* 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 */
|
||||
err = snd_ac97_bus(au1000->card, 0, &ops, au1000, &pbus);
|
||||
if (err < 0)
|
||||
goto out;
|
||||
|
||||
memset(&ac97, 0, sizeof(ac97));
|
||||
ac97.private_data = au1000;
|
||||
err = snd_ac97_mixer(pbus, &ac97, &au1000->ac97);
|
||||
if (err < 0)
|
||||
goto out;
|
||||
|
||||
err = snd_au1000_pcm_new(au1000);
|
||||
if (err < 0)
|
||||
goto out;
|
||||
|
||||
strcpy(card->driver, "Au1000-AC97");
|
||||
strcpy(card->shortname, "AMD Au1000-AC97");
|
||||
sprintf(card->longname, "AMD Au1000--AC97 ALSA Driver");
|
||||
|
||||
err = snd_card_register(card);
|
||||
if (err < 0)
|
||||
goto out;
|
||||
|
||||
printk(KERN_INFO "ALSA AC97: Driver Initialized\n");
|
||||
|
||||
platform_set_drvdata(pdev, card);
|
||||
|
||||
return 0;
|
||||
|
||||
out:
|
||||
snd_card_free(card);
|
||||
return err;
|
||||
}
|
||||
|
||||
static int au1000_ac97_remove(struct platform_device *pdev)
|
||||
{
|
||||
return snd_card_free(platform_get_drvdata(pdev));
|
||||
}
|
||||
|
||||
struct platform_driver au1000_ac97c_driver = {
|
||||
.driver = {
|
||||
.name = "au1000-ac97c",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = au1000_ac97_probe,
|
||||
.remove = au1000_ac97_remove,
|
||||
};
|
||||
|
||||
module_platform_driver(au1000_ac97c_driver);
|
||||
Loading…
Reference in a new issue