mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
74426fbff6
AC97 is a bus for sound usage. It enables for a AC97 AC-Link to link one controller to 0 to 4 AC97 codecs. The goal of this new implementation is to implement a device/driver model for AC97, with an automatic scan of the bus and automatic discovery of AC97 codec devices. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Reviewed-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Mark Brown <broonie@kernel.org>
109 lines
2.8 KiB
C
109 lines
2.8 KiB
C
/*
|
|
* Copyright (C) 2016 Robert Jarzmik <robert.jarzmik@free.fr>
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <linux/list.h>
|
|
#include <linux/slab.h>
|
|
#include <sound/ac97/codec.h>
|
|
#include <sound/ac97/compat.h>
|
|
#include <sound/ac97/controller.h>
|
|
#include <sound/soc.h>
|
|
|
|
#include "ac97_core.h"
|
|
|
|
static void compat_ac97_reset(struct snd_ac97 *ac97)
|
|
{
|
|
struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
|
|
struct ac97_controller *actrl = adev->ac97_ctrl;
|
|
|
|
if (actrl->ops->reset)
|
|
actrl->ops->reset(actrl);
|
|
}
|
|
|
|
static void compat_ac97_warm_reset(struct snd_ac97 *ac97)
|
|
{
|
|
struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
|
|
struct ac97_controller *actrl = adev->ac97_ctrl;
|
|
|
|
if (actrl->ops->warm_reset)
|
|
actrl->ops->warm_reset(actrl);
|
|
}
|
|
|
|
static void compat_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
|
|
unsigned short val)
|
|
{
|
|
struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
|
|
struct ac97_controller *actrl = adev->ac97_ctrl;
|
|
|
|
actrl->ops->write(actrl, ac97->num, reg, val);
|
|
}
|
|
|
|
static unsigned short compat_ac97_read(struct snd_ac97 *ac97,
|
|
unsigned short reg)
|
|
{
|
|
struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
|
|
struct ac97_controller *actrl = adev->ac97_ctrl;
|
|
|
|
return actrl->ops->read(actrl, ac97->num, reg);
|
|
}
|
|
|
|
static struct snd_ac97_bus_ops compat_snd_ac97_bus_ops = {
|
|
.reset = compat_ac97_reset,
|
|
.warm_reset = compat_ac97_warm_reset,
|
|
.write = compat_ac97_write,
|
|
.read = compat_ac97_read,
|
|
};
|
|
|
|
static struct snd_ac97_bus compat_soc_ac97_bus = {
|
|
.ops = &compat_snd_ac97_bus_ops,
|
|
};
|
|
|
|
struct snd_ac97 *snd_ac97_compat_alloc(struct ac97_codec_device *adev)
|
|
{
|
|
struct snd_ac97 *ac97;
|
|
|
|
ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
|
|
if (ac97 == NULL)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
ac97->dev = adev->dev;
|
|
ac97->private_data = adev;
|
|
ac97->bus = &compat_soc_ac97_bus;
|
|
return ac97;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_ac97_compat_alloc);
|
|
|
|
void snd_ac97_compat_release(struct snd_ac97 *ac97)
|
|
{
|
|
kfree(ac97);
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_ac97_compat_release);
|
|
|
|
int snd_ac97_reset(struct snd_ac97 *ac97, bool try_warm, unsigned int id,
|
|
unsigned int id_mask)
|
|
{
|
|
struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
|
|
struct ac97_controller *actrl = adev->ac97_ctrl;
|
|
unsigned int scanned;
|
|
|
|
if (try_warm) {
|
|
compat_ac97_warm_reset(ac97);
|
|
scanned = snd_ac97_bus_scan_one(actrl, adev->num);
|
|
if (ac97_ids_match(scanned, adev->vendor_id, id_mask))
|
|
return 1;
|
|
}
|
|
|
|
compat_ac97_reset(ac97);
|
|
compat_ac97_warm_reset(ac97);
|
|
scanned = snd_ac97_bus_scan_one(actrl, adev->num);
|
|
if (ac97_ids_match(scanned, adev->vendor_id, id_mask))
|
|
return 0;
|
|
|
|
return -ENODEV;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_ac97_reset);
|