152 lines
3.3 KiB
C
152 lines
3.3 KiB
C
/*
|
|
* Apple Onboard Audio driver for Toonie codec
|
|
*
|
|
* Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
|
|
*
|
|
* GPL v2, can be found in COPYING.
|
|
*
|
|
*
|
|
* This is a driver for the toonie codec chip. This chip is present
|
|
* on the Mac Mini and is nothing but a DAC.
|
|
*/
|
|
#include <linux/delay.h>
|
|
#include <linux/module.h>
|
|
#include <linux/slab.h>
|
|
MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DESCRIPTION("toonie codec driver for snd-aoa");
|
|
|
|
#include "../aoa.h"
|
|
#include "../soundbus/soundbus.h"
|
|
|
|
|
|
#define PFX "snd-aoa-codec-toonie: "
|
|
|
|
struct toonie {
|
|
struct aoa_codec codec;
|
|
};
|
|
#define codec_to_toonie(c) container_of(c, struct toonie, codec)
|
|
|
|
static int toonie_dev_register(struct snd_device *dev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static struct snd_device_ops ops = {
|
|
.dev_register = toonie_dev_register,
|
|
};
|
|
|
|
static struct transfer_info toonie_transfers[] = {
|
|
/* This thing *only* has analog output,
|
|
* the rates are taken from Info.plist
|
|
* from Darwin. */
|
|
{
|
|
.formats = SNDRV_PCM_FMTBIT_S16_BE |
|
|
SNDRV_PCM_FMTBIT_S24_BE,
|
|
.rates = SNDRV_PCM_RATE_32000 |
|
|
SNDRV_PCM_RATE_44100 |
|
|
SNDRV_PCM_RATE_48000 |
|
|
SNDRV_PCM_RATE_88200 |
|
|
SNDRV_PCM_RATE_96000,
|
|
},
|
|
{}
|
|
};
|
|
|
|
static int toonie_usable(struct codec_info_item *cii,
|
|
struct transfer_info *ti,
|
|
struct transfer_info *out)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int toonie_suspend(struct codec_info_item *cii, pm_message_t state)
|
|
{
|
|
/* can we turn it off somehow? */
|
|
return 0;
|
|
}
|
|
|
|
static int toonie_resume(struct codec_info_item *cii)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_PM */
|
|
|
|
static struct codec_info toonie_codec_info = {
|
|
.transfers = toonie_transfers,
|
|
.sysclock_factor = 256,
|
|
.bus_factor = 64,
|
|
.owner = THIS_MODULE,
|
|
.usable = toonie_usable,
|
|
#ifdef CONFIG_PM
|
|
.suspend = toonie_suspend,
|
|
.resume = toonie_resume,
|
|
#endif
|
|
};
|
|
|
|
static int toonie_init_codec(struct aoa_codec *codec)
|
|
{
|
|
struct toonie *toonie = codec_to_toonie(codec);
|
|
|
|
/* nothing connected? what a joke! */
|
|
if (toonie->codec.connected != 1)
|
|
return -ENOTCONN;
|
|
|
|
if (aoa_snd_device_new(SNDRV_DEV_LOWLEVEL, toonie, &ops)) {
|
|
printk(KERN_ERR PFX "failed to create toonie snd device!\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (toonie->codec.soundbus_dev->attach_codec(toonie->codec.soundbus_dev,
|
|
aoa_get_card(),
|
|
&toonie_codec_info, toonie)) {
|
|
printk(KERN_ERR PFX "error creating toonie pcm\n");
|
|
snd_device_free(aoa_get_card(), toonie);
|
|
return -ENODEV;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void toonie_exit_codec(struct aoa_codec *codec)
|
|
{
|
|
struct toonie *toonie = codec_to_toonie(codec);
|
|
|
|
if (!toonie->codec.soundbus_dev) {
|
|
printk(KERN_ERR PFX "toonie_exit_codec called without soundbus_dev!\n");
|
|
return;
|
|
}
|
|
toonie->codec.soundbus_dev->detach_codec(toonie->codec.soundbus_dev, toonie);
|
|
}
|
|
|
|
static struct toonie *toonie;
|
|
|
|
static int __init toonie_init(void)
|
|
{
|
|
toonie = kzalloc(sizeof(struct toonie), GFP_KERNEL);
|
|
|
|
if (!toonie)
|
|
return -ENOMEM;
|
|
|
|
strlcpy(toonie->codec.name, "toonie", sizeof(toonie->codec.name));
|
|
toonie->codec.owner = THIS_MODULE;
|
|
toonie->codec.init = toonie_init_codec;
|
|
toonie->codec.exit = toonie_exit_codec;
|
|
|
|
if (aoa_codec_register(&toonie->codec)) {
|
|
kfree(toonie);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __exit toonie_exit(void)
|
|
{
|
|
aoa_codec_unregister(&toonie->codec);
|
|
kfree(toonie);
|
|
}
|
|
|
|
module_init(toonie_init);
|
|
module_exit(toonie_exit);
|