/* * 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> 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);