mirror of
https://github.com/adulau/aha.git
synced 2024-12-27 11:16:11 +00:00
ALSA: sh: add SuperH DAC audio driver for ALSA V4
This is a port of the sound/oss/sh_dac_audio.c driver. The driver uses an on-chip 8-bit D/A converter, which has a speaker connected to one of its channels, found in several ancient HP machines. For interrupts it uses a high-resolution timer (hrtimer). Tested on SH7709 based hp6xx (HP Jornada 680/690 and HP Palmtop 620lx/660lx). Also, since OSS Emulation works, the old OSS sound/oss/sh_dac_audio.c driver would be obsolete soon, and it could be removed. Signed-off-by: Rafael Ignacio Zurita <rizurita@yahoo.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Rafael Ignacio Zurita
Takashi Iwai
parent
bcc2c6b7cb
commit
9dcaa7b25f
6 changed files with 543 additions and 0 deletions
|
|
@ -13,6 +13,7 @@
|
|||
#include <linux/init.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/irq.h>
|
||||
#include <sound/sh_dac_audio.h>
|
||||
#include <asm/hd64461.h>
|
||||
#include <asm/io.h>
|
||||
#include <mach/hp6xx.h>
|
||||
|
|
@ -51,9 +52,63 @@ static struct platform_device jornadakbd_device = {
|
|||
.id = -1,
|
||||
};
|
||||
|
||||
static void dac_audio_start(struct dac_audio_pdata *pdata)
|
||||
{
|
||||
u16 v;
|
||||
u8 v8;
|
||||
|
||||
/* HP Jornada 680/690 speaker on */
|
||||
v = inw(HD64461_GPADR);
|
||||
v &= ~HD64461_GPADR_SPEAKER;
|
||||
outw(v, HD64461_GPADR);
|
||||
|
||||
/* HP Palmtop 620lx/660lx speaker on */
|
||||
v8 = inb(PKDR);
|
||||
v8 &= ~PKDR_SPEAKER;
|
||||
outb(v8, PKDR);
|
||||
|
||||
sh_dac_enable(pdata->channel);
|
||||
}
|
||||
|
||||
static void dac_audio_stop(struct dac_audio_pdata *pdata)
|
||||
{
|
||||
u16 v;
|
||||
u8 v8;
|
||||
|
||||
/* HP Jornada 680/690 speaker off */
|
||||
v = inw(HD64461_GPADR);
|
||||
v |= HD64461_GPADR_SPEAKER;
|
||||
outw(v, HD64461_GPADR);
|
||||
|
||||
/* HP Palmtop 620lx/660lx speaker off */
|
||||
v8 = inb(PKDR);
|
||||
v8 |= PKDR_SPEAKER;
|
||||
outb(v8, PKDR);
|
||||
|
||||
sh_dac_output(0, pdata->channel);
|
||||
sh_dac_disable(pdata->channel);
|
||||
}
|
||||
|
||||
static struct dac_audio_pdata dac_audio_platform_data = {
|
||||
.buffer_size = 64000,
|
||||
.channel = 1,
|
||||
.start = dac_audio_start,
|
||||
.stop = dac_audio_stop,
|
||||
};
|
||||
|
||||
static struct platform_device dac_audio_device = {
|
||||
.name = "dac_audio",
|
||||
.id = -1,
|
||||
.dev = {
|
||||
.platform_data = &dac_audio_platform_data,
|
||||
}
|
||||
|
||||
};
|
||||
|
||||
static struct platform_device *hp6xx_devices[] __initdata = {
|
||||
&cf_ide_device,
|
||||
&jornadakbd_device,
|
||||
&dac_audio_device,
|
||||
};
|
||||
|
||||
static void __init hp6xx_init_irq(void)
|
||||
|
|
|
|||
|
|
@ -29,6 +29,9 @@
|
|||
|
||||
#define PKDR_LED_GREEN 0x10
|
||||
|
||||
/* HP Palmtop 620lx/660lx speaker on/off */
|
||||
#define PKDR_SPEAKER 0x20
|
||||
|
||||
#define SCPDR_TS_SCAN_ENABLE 0x20
|
||||
#define SCPDR_TS_SCAN_Y 0x02
|
||||
#define SCPDR_TS_SCAN_X 0x01
|
||||
|
|
@ -42,6 +45,7 @@
|
|||
#define ADC_CHANNEL_BACKUP 4
|
||||
#define ADC_CHANNEL_CHARGE 5
|
||||
|
||||
/* HP Jornada 680/690 speaker on/off */
|
||||
#define HD64461_GPADR_SPEAKER 0x01
|
||||
#define HD64461_GPADR_PCMCIA0 (0x02|0x08)
|
||||
|
||||
|
|
|
|||
21
include/sound/sh_dac_audio.h
Normal file
21
include/sound/sh_dac_audio.h
Normal file
|
|
@ -0,0 +1,21 @@
|
|||
/*
|
||||
* SH_DAC specific configuration, for the dac_audio platform_device
|
||||
*
|
||||
* Copyright (C) 2009 Rafael Ignacio Zurita <rizurita@yahoo.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License version 2 as published
|
||||
* by the Free Software Foundation.
|
||||
*/
|
||||
|
||||
#ifndef __INCLUDE_SH_DAC_AUDIO_H
|
||||
#define __INCLUDE_SH_DAC_AUDIO_H
|
||||
|
||||
struct dac_audio_pdata {
|
||||
int buffer_size;
|
||||
int channel;
|
||||
void (*start)(struct dac_audio_pdata *pd);
|
||||
void (*stop)(struct dac_audio_pdata *pd);
|
||||
};
|
||||
|
||||
#endif /* __INCLUDE_SH_DAC_AUDIO_H */
|
||||
|
|
@ -19,5 +19,13 @@ config SND_AICA
|
|||
help
|
||||
ALSA Sound driver for the SEGA Dreamcast console.
|
||||
|
||||
config SND_SH_DAC_AUDIO
|
||||
tristate "SuperH DAC audio support"
|
||||
depends on SND
|
||||
depends on CPU_SH3 && HIGH_RES_TIMERS
|
||||
select SND_PCM
|
||||
help
|
||||
Say Y here to include support for the on-chip DAC.
|
||||
|
||||
endif # SND_SUPERH
|
||||
|
||||
|
|
|
|||
|
|
@ -3,6 +3,8 @@
|
|||
#
|
||||
|
||||
snd-aica-objs := aica.o
|
||||
snd-sh_dac_audio-objs := sh_dac_audio.o
|
||||
|
||||
# Toplevel Module Dependency
|
||||
obj-$(CONFIG_SND_AICA) += snd-aica.o
|
||||
obj-$(CONFIG_SND_SH_DAC_AUDIO) += snd-sh_dac_audio.o
|
||||
|
|
|
|||
453
sound/sh/sh_dac_audio.c
Normal file
453
sound/sh/sh_dac_audio.c
Normal file
|
|
@ -0,0 +1,453 @@
|
|||
/*
|
||||
* sh_dac_audio.c - SuperH DAC audio driver for ALSA
|
||||
*
|
||||
* Copyright (c) 2009 by Rafael Ignacio Zurita <rizurita@yahoo.com>
|
||||
*
|
||||
*
|
||||
* Based on sh_dac_audio.c (Copyright (C) 2004, 2005 by Andriy Skulysh)
|
||||
*
|
||||
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
*
|
||||
*/
|
||||
|
||||
#include <linux/hrtimer.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <sound/core.h>
|
||||
#include <sound/initval.h>
|
||||
#include <sound/pcm.h>
|
||||
#include <sound/sh_dac_audio.h>
|
||||
#include <asm/clock.h>
|
||||
#include <asm/hd64461.h>
|
||||
#include <mach/hp6xx.h>
|
||||
#include <cpu/dac.h>
|
||||
|
||||
MODULE_AUTHOR("Rafael Ignacio Zurita <rizurita@yahoo.com>");
|
||||
MODULE_DESCRIPTION("SuperH DAC audio driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_SUPPORTED_DEVICE("{{SuperH DAC audio support}}");
|
||||
|
||||
/* Module Parameters */
|
||||
static int index = SNDRV_DEFAULT_IDX1;
|
||||
static char *id = SNDRV_DEFAULT_STR1;
|
||||
module_param(index, int, 0444);
|
||||
MODULE_PARM_DESC(index, "Index value for SuperH DAC audio.");
|
||||
module_param(id, charp, 0444);
|
||||
MODULE_PARM_DESC(id, "ID string for SuperH DAC audio.");
|
||||
|
||||
/* main struct */
|
||||
struct snd_sh_dac {
|
||||
struct snd_card *card;
|
||||
struct snd_pcm_substream *substream;
|
||||
struct hrtimer hrtimer;
|
||||
ktime_t wakeups_per_second;
|
||||
|
||||
int rate;
|
||||
int empty;
|
||||
char *data_buffer, *buffer_begin, *buffer_end;
|
||||
int processed; /* bytes proccesed, to compare with period_size */
|
||||
int buffer_size;
|
||||
struct dac_audio_pdata *pdata;
|
||||
};
|
||||
|
||||
|
||||
static void dac_audio_start_timer(struct snd_sh_dac *chip)
|
||||
{
|
||||
hrtimer_start(&chip->hrtimer, chip->wakeups_per_second,
|
||||
HRTIMER_MODE_REL);
|
||||
}
|
||||
|
||||
static void dac_audio_stop_timer(struct snd_sh_dac *chip)
|
||||
{
|
||||
hrtimer_cancel(&chip->hrtimer);
|
||||
}
|
||||
|
||||
static void dac_audio_reset(struct snd_sh_dac *chip)
|
||||
{
|
||||
dac_audio_stop_timer(chip);
|
||||
chip->buffer_begin = chip->buffer_end = chip->data_buffer;
|
||||
chip->processed = 0;
|
||||
chip->empty = 1;
|
||||
}
|
||||
|
||||
static void dac_audio_set_rate(struct snd_sh_dac *chip)
|
||||
{
|
||||
chip->wakeups_per_second = ktime_set(0, 1000000000 / chip->rate);
|
||||
}
|
||||
|
||||
|
||||
/* PCM INTERFACE */
|
||||
|
||||
static struct snd_pcm_hardware snd_sh_dac_pcm_hw = {
|
||||
.info = (SNDRV_PCM_INFO_MMAP |
|
||||
SNDRV_PCM_INFO_MMAP_VALID |
|
||||
SNDRV_PCM_INFO_INTERLEAVED |
|
||||
SNDRV_PCM_INFO_HALF_DUPLEX),
|
||||
.formats = SNDRV_PCM_FMTBIT_U8,
|
||||
.rates = SNDRV_PCM_RATE_8000,
|
||||
.rate_min = 8000,
|
||||
.rate_max = 8000,
|
||||
.channels_min = 1,
|
||||
.channels_max = 1,
|
||||
.buffer_bytes_max = (48*1024),
|
||||
.period_bytes_min = 1,
|
||||
.period_bytes_max = (48*1024),
|
||||
.periods_min = 1,
|
||||
.periods_max = 1024,
|
||||
};
|
||||
|
||||
static int snd_sh_dac_pcm_open(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct snd_sh_dac *chip = snd_pcm_substream_chip(substream);
|
||||
struct snd_pcm_runtime *runtime = substream->runtime;
|
||||
|
||||
runtime->hw = snd_sh_dac_pcm_hw;
|
||||
|
||||
chip->substream = substream;
|
||||
chip->buffer_begin = chip->buffer_end = chip->data_buffer;
|
||||
chip->processed = 0;
|
||||
chip->empty = 1;
|
||||
|
||||
chip->pdata->start(chip->pdata);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int snd_sh_dac_pcm_close(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct snd_sh_dac *chip = snd_pcm_substream_chip(substream);
|
||||
|
||||
chip->substream = NULL;
|
||||
|
||||
dac_audio_stop_timer(chip);
|
||||
chip->pdata->stop(chip->pdata);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int snd_sh_dac_pcm_hw_params(struct snd_pcm_substream *substream,
|
||||
struct snd_pcm_hw_params *hw_params)
|
||||
{
|
||||
return snd_pcm_lib_malloc_pages(substream,
|
||||
params_buffer_bytes(hw_params));
|
||||
}
|
||||
|
||||
static int snd_sh_dac_pcm_hw_free(struct snd_pcm_substream *substream)
|
||||
{
|
||||
return snd_pcm_lib_free_pages(substream);
|
||||
}
|
||||
|
||||
static int snd_sh_dac_pcm_prepare(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct snd_sh_dac *chip = snd_pcm_substream_chip(substream);
|
||||
struct snd_pcm_runtime *runtime = chip->substream->runtime;
|
||||
|
||||
chip->buffer_size = runtime->buffer_size;
|
||||
memset(chip->data_buffer, 0, chip->pdata->buffer_size);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int snd_sh_dac_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
|
||||
{
|
||||
struct snd_sh_dac *chip = snd_pcm_substream_chip(substream);
|
||||
|
||||
switch (cmd) {
|
||||
case SNDRV_PCM_TRIGGER_START:
|
||||
dac_audio_start_timer(chip);
|
||||
break;
|
||||
case SNDRV_PCM_TRIGGER_STOP:
|
||||
chip->buffer_begin = chip->buffer_end = chip->data_buffer;
|
||||
chip->processed = 0;
|
||||
chip->empty = 1;
|
||||
dac_audio_stop_timer(chip);
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int snd_sh_dac_pcm_copy(struct snd_pcm_substream *substream, int channel,
|
||||
snd_pcm_uframes_t pos, void __user *src, snd_pcm_uframes_t count)
|
||||
{
|
||||
/* channel is not used (interleaved data) */
|
||||
struct snd_sh_dac *chip = snd_pcm_substream_chip(substream);
|
||||
struct snd_pcm_runtime *runtime = substream->runtime;
|
||||
ssize_t b_count = frames_to_bytes(runtime , count);
|
||||
ssize_t b_pos = frames_to_bytes(runtime , pos);
|
||||
|
||||
if (count < 0)
|
||||
return -EINVAL;
|
||||
|
||||
if (!count)
|
||||
return 0;
|
||||
|
||||
memcpy_toio(chip->data_buffer + b_pos, src, b_count);
|
||||
chip->buffer_end = chip->data_buffer + b_pos + b_count;
|
||||
|
||||
if (chip->empty) {
|
||||
chip->empty = 0;
|
||||
dac_audio_start_timer(chip);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int snd_sh_dac_pcm_silence(struct snd_pcm_substream *substream,
|
||||
int channel, snd_pcm_uframes_t pos,
|
||||
snd_pcm_uframes_t count)
|
||||
{
|
||||
/* channel is not used (interleaved data) */
|
||||
struct snd_sh_dac *chip = snd_pcm_substream_chip(substream);
|
||||
struct snd_pcm_runtime *runtime = substream->runtime;
|
||||
ssize_t b_count = frames_to_bytes(runtime , count);
|
||||
ssize_t b_pos = frames_to_bytes(runtime , pos);
|
||||
|
||||
if (count < 0)
|
||||
return -EINVAL;
|
||||
|
||||
if (!count)
|
||||
return 0;
|
||||
|
||||
memset_io(chip->data_buffer + b_pos, 0, b_count);
|
||||
chip->buffer_end = chip->data_buffer + b_pos + b_count;
|
||||
|
||||
if (chip->empty) {
|
||||
chip->empty = 0;
|
||||
dac_audio_start_timer(chip);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static
|
||||
snd_pcm_uframes_t snd_sh_dac_pcm_pointer(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct snd_sh_dac *chip = snd_pcm_substream_chip(substream);
|
||||
int pointer = chip->buffer_begin - chip->data_buffer;
|
||||
|
||||
return pointer;
|
||||
}
|
||||
|
||||
/* pcm ops */
|
||||
static struct snd_pcm_ops snd_sh_dac_pcm_ops = {
|
||||
.open = snd_sh_dac_pcm_open,
|
||||
.close = snd_sh_dac_pcm_close,
|
||||
.ioctl = snd_pcm_lib_ioctl,
|
||||
.hw_params = snd_sh_dac_pcm_hw_params,
|
||||
.hw_free = snd_sh_dac_pcm_hw_free,
|
||||
.prepare = snd_sh_dac_pcm_prepare,
|
||||
.trigger = snd_sh_dac_pcm_trigger,
|
||||
.pointer = snd_sh_dac_pcm_pointer,
|
||||
.copy = snd_sh_dac_pcm_copy,
|
||||
.silence = snd_sh_dac_pcm_silence,
|
||||
.mmap = snd_pcm_lib_mmap_iomem,
|
||||
};
|
||||
|
||||
static int __devinit snd_sh_dac_pcm(struct snd_sh_dac *chip, int device)
|
||||
{
|
||||
int err;
|
||||
struct snd_pcm *pcm;
|
||||
|
||||
/* device should be always 0 for us */
|
||||
err = snd_pcm_new(chip->card, "SH_DAC PCM", device, 1, 0, &pcm);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
pcm->private_data = chip;
|
||||
strcpy(pcm->name, "SH_DAC PCM");
|
||||
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_sh_dac_pcm_ops);
|
||||
|
||||
/* buffer size=48K */
|
||||
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
|
||||
snd_dma_continuous_data(GFP_KERNEL),
|
||||
48 * 1024,
|
||||
48 * 1024);
|
||||
|
||||
return 0;
|
||||
}
|
||||
/* END OF PCM INTERFACE */
|
||||
|
||||
|
||||
/* driver .remove -- destructor */
|
||||
static int snd_sh_dac_remove(struct platform_device *devptr)
|
||||
{
|
||||
snd_card_free(platform_get_drvdata(devptr));
|
||||
platform_set_drvdata(devptr, NULL);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* free -- it has been defined by create */
|
||||
static int snd_sh_dac_free(struct snd_sh_dac *chip)
|
||||
{
|
||||
/* release the data */
|
||||
kfree(chip->data_buffer);
|
||||
kfree(chip);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int snd_sh_dac_dev_free(struct snd_device *device)
|
||||
{
|
||||
struct snd_sh_dac *chip = device->device_data;
|
||||
|
||||
return snd_sh_dac_free(chip);
|
||||
}
|
||||
|
||||
static enum hrtimer_restart sh_dac_audio_timer(struct hrtimer *handle)
|
||||
{
|
||||
struct snd_sh_dac *chip = container_of(handle, struct snd_sh_dac,
|
||||
hrtimer);
|
||||
struct snd_pcm_runtime *runtime = chip->substream->runtime;
|
||||
ssize_t b_ps = frames_to_bytes(runtime, runtime->period_size);
|
||||
|
||||
if (!chip->empty) {
|
||||
sh_dac_output(*chip->buffer_begin, chip->pdata->channel);
|
||||
chip->buffer_begin++;
|
||||
|
||||
chip->processed++;
|
||||
if (chip->processed >= b_ps) {
|
||||
chip->processed -= b_ps;
|
||||
snd_pcm_period_elapsed(chip->substream);
|
||||
}
|
||||
|
||||
if (chip->buffer_begin == (chip->data_buffer +
|
||||
chip->buffer_size - 1))
|
||||
chip->buffer_begin = chip->data_buffer;
|
||||
|
||||
if (chip->buffer_begin == chip->buffer_end)
|
||||
chip->empty = 1;
|
||||
|
||||
}
|
||||
|
||||
if (!chip->empty)
|
||||
hrtimer_start(&chip->hrtimer, chip->wakeups_per_second,
|
||||
HRTIMER_MODE_REL);
|
||||
|
||||
return HRTIMER_NORESTART;
|
||||
}
|
||||
|
||||
/* create -- chip-specific constructor for the cards components */
|
||||
static int __devinit snd_sh_dac_create(struct snd_card *card,
|
||||
struct platform_device *devptr,
|
||||
struct snd_sh_dac **rchip)
|
||||
{
|
||||
struct snd_sh_dac *chip;
|
||||
int err;
|
||||
|
||||
static struct snd_device_ops ops = {
|
||||
.dev_free = snd_sh_dac_dev_free,
|
||||
};
|
||||
|
||||
*rchip = NULL;
|
||||
|
||||
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
|
||||
if (chip == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
chip->card = card;
|
||||
|
||||
hrtimer_init(&chip->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
|
||||
chip->hrtimer.function = sh_dac_audio_timer;
|
||||
|
||||
dac_audio_reset(chip);
|
||||
chip->rate = 8000;
|
||||
dac_audio_set_rate(chip);
|
||||
|
||||
chip->pdata = devptr->dev.platform_data;
|
||||
|
||||
chip->data_buffer = kmalloc(chip->pdata->buffer_size, GFP_KERNEL);
|
||||
if (chip->data_buffer == NULL) {
|
||||
kfree(chip);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
|
||||
if (err < 0) {
|
||||
snd_sh_dac_free(chip);
|
||||
return err;
|
||||
}
|
||||
|
||||
*rchip = chip;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* driver .probe -- constructor */
|
||||
static int __devinit snd_sh_dac_probe(struct platform_device *devptr)
|
||||
{
|
||||
struct snd_sh_dac *chip;
|
||||
struct snd_card *card;
|
||||
int err;
|
||||
|
||||
err = snd_card_create(index, id, THIS_MODULE, 0, &card);
|
||||
if (err < 0) {
|
||||
snd_printk(KERN_ERR "cannot allocate the card\n");
|
||||
return err;
|
||||
}
|
||||
|
||||
err = snd_sh_dac_create(card, devptr, &chip);
|
||||
if (err < 0)
|
||||
goto probe_error;
|
||||
|
||||
err = snd_sh_dac_pcm(chip, 0);
|
||||
if (err < 0)
|
||||
goto probe_error;
|
||||
|
||||
strcpy(card->driver, "snd_sh_dac");
|
||||
strcpy(card->shortname, "SuperH DAC audio driver");
|
||||
printk(KERN_INFO "%s %s", card->longname, card->shortname);
|
||||
|
||||
err = snd_card_register(card);
|
||||
if (err < 0)
|
||||
goto probe_error;
|
||||
|
||||
snd_printk("ALSA driver for SuperH DAC audio");
|
||||
|
||||
platform_set_drvdata(devptr, card);
|
||||
return 0;
|
||||
|
||||
probe_error:
|
||||
snd_card_free(card);
|
||||
return err;
|
||||
}
|
||||
|
||||
/*
|
||||
* "driver" definition
|
||||
*/
|
||||
static struct platform_driver driver = {
|
||||
.probe = snd_sh_dac_probe,
|
||||
.remove = snd_sh_dac_remove,
|
||||
.driver = {
|
||||
.name = "dac_audio",
|
||||
},
|
||||
};
|
||||
|
||||
static int __init sh_dac_init(void)
|
||||
{
|
||||
return platform_driver_register(&driver);
|
||||
}
|
||||
|
||||
static void __exit sh_dac_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&driver);
|
||||
}
|
||||
|
||||
module_init(sh_dac_init);
|
||||
module_exit(sh_dac_exit);
|
||||
Loading…
Reference in a new issue