Johannes Berg | f3d9478 | 2006-06-21 15:42:43 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Apple Onboard Audio driver for Toonie codec |
| 3 | * |
| 4 | * Copyright 2006 Johannes Berg <johannes@sipsolutions.net> |
| 5 | * |
| 6 | * GPL v2, can be found in COPYING. |
| 7 | * |
| 8 | * |
| 9 | * This is a driver for the toonie codec chip. This chip is present |
| 10 | * on the Mac Mini and is nothing but a DAC. |
| 11 | */ |
| 12 | #include <linux/delay.h> |
| 13 | #include <linux/module.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame^] | 14 | #include <linux/slab.h> |
Johannes Berg | f3d9478 | 2006-06-21 15:42:43 +0200 | [diff] [blame] | 15 | MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>"); |
| 16 | MODULE_LICENSE("GPL"); |
| 17 | MODULE_DESCRIPTION("toonie codec driver for snd-aoa"); |
| 18 | |
| 19 | #include "../aoa.h" |
| 20 | #include "../soundbus/soundbus.h" |
| 21 | |
| 22 | |
| 23 | #define PFX "snd-aoa-codec-toonie: " |
| 24 | |
| 25 | struct toonie { |
| 26 | struct aoa_codec codec; |
| 27 | }; |
| 28 | #define codec_to_toonie(c) container_of(c, struct toonie, codec) |
| 29 | |
| 30 | static int toonie_dev_register(struct snd_device *dev) |
| 31 | { |
| 32 | return 0; |
| 33 | } |
| 34 | |
| 35 | static struct snd_device_ops ops = { |
| 36 | .dev_register = toonie_dev_register, |
| 37 | }; |
| 38 | |
| 39 | static struct transfer_info toonie_transfers[] = { |
| 40 | /* This thing *only* has analog output, |
| 41 | * the rates are taken from Info.plist |
| 42 | * from Darwin. */ |
| 43 | { |
| 44 | .formats = SNDRV_PCM_FMTBIT_S16_BE | |
| 45 | SNDRV_PCM_FMTBIT_S24_BE, |
| 46 | .rates = SNDRV_PCM_RATE_32000 | |
| 47 | SNDRV_PCM_RATE_44100 | |
| 48 | SNDRV_PCM_RATE_48000 | |
| 49 | SNDRV_PCM_RATE_88200 | |
| 50 | SNDRV_PCM_RATE_96000, |
| 51 | }, |
| 52 | {} |
| 53 | }; |
| 54 | |
Johannes Berg | 6e8331a | 2006-07-25 16:13:37 +0200 | [diff] [blame] | 55 | static int toonie_usable(struct codec_info_item *cii, |
| 56 | struct transfer_info *ti, |
| 57 | struct transfer_info *out) |
| 58 | { |
| 59 | return 1; |
| 60 | } |
| 61 | |
Johannes Berg | f3d9478 | 2006-06-21 15:42:43 +0200 | [diff] [blame] | 62 | #ifdef CONFIG_PM |
| 63 | static int toonie_suspend(struct codec_info_item *cii, pm_message_t state) |
| 64 | { |
| 65 | /* can we turn it off somehow? */ |
| 66 | return 0; |
| 67 | } |
| 68 | |
| 69 | static int toonie_resume(struct codec_info_item *cii) |
| 70 | { |
| 71 | return 0; |
| 72 | } |
| 73 | #endif /* CONFIG_PM */ |
| 74 | |
| 75 | static struct codec_info toonie_codec_info = { |
| 76 | .transfers = toonie_transfers, |
| 77 | .sysclock_factor = 256, |
| 78 | .bus_factor = 64, |
| 79 | .owner = THIS_MODULE, |
Johannes Berg | 6e8331a | 2006-07-25 16:13:37 +0200 | [diff] [blame] | 80 | .usable = toonie_usable, |
Johannes Berg | f3d9478 | 2006-06-21 15:42:43 +0200 | [diff] [blame] | 81 | #ifdef CONFIG_PM |
| 82 | .suspend = toonie_suspend, |
| 83 | .resume = toonie_resume, |
| 84 | #endif |
| 85 | }; |
| 86 | |
| 87 | static int toonie_init_codec(struct aoa_codec *codec) |
| 88 | { |
| 89 | struct toonie *toonie = codec_to_toonie(codec); |
| 90 | |
Johannes Berg | 6e8331a | 2006-07-25 16:13:37 +0200 | [diff] [blame] | 91 | /* nothing connected? what a joke! */ |
| 92 | if (toonie->codec.connected != 1) |
| 93 | return -ENOTCONN; |
| 94 | |
Johannes Berg | f3d9478 | 2006-06-21 15:42:43 +0200 | [diff] [blame] | 95 | if (aoa_snd_device_new(SNDRV_DEV_LOWLEVEL, toonie, &ops)) { |
| 96 | printk(KERN_ERR PFX "failed to create toonie snd device!\n"); |
| 97 | return -ENODEV; |
| 98 | } |
| 99 | |
Johannes Berg | f3d9478 | 2006-06-21 15:42:43 +0200 | [diff] [blame] | 100 | if (toonie->codec.soundbus_dev->attach_codec(toonie->codec.soundbus_dev, |
| 101 | aoa_get_card(), |
| 102 | &toonie_codec_info, toonie)) { |
| 103 | printk(KERN_ERR PFX "error creating toonie pcm\n"); |
Johannes Berg | 6e8331a | 2006-07-25 16:13:37 +0200 | [diff] [blame] | 104 | snd_device_free(aoa_get_card(), toonie); |
Johannes Berg | f3d9478 | 2006-06-21 15:42:43 +0200 | [diff] [blame] | 105 | return -ENODEV; |
| 106 | } |
| 107 | |
| 108 | return 0; |
| 109 | } |
| 110 | |
| 111 | static void toonie_exit_codec(struct aoa_codec *codec) |
| 112 | { |
| 113 | struct toonie *toonie = codec_to_toonie(codec); |
| 114 | |
| 115 | if (!toonie->codec.soundbus_dev) { |
| 116 | printk(KERN_ERR PFX "toonie_exit_codec called without soundbus_dev!\n"); |
| 117 | return; |
| 118 | } |
| 119 | toonie->codec.soundbus_dev->detach_codec(toonie->codec.soundbus_dev, toonie); |
| 120 | } |
| 121 | |
| 122 | static struct toonie *toonie; |
| 123 | |
| 124 | static int __init toonie_init(void) |
| 125 | { |
| 126 | toonie = kzalloc(sizeof(struct toonie), GFP_KERNEL); |
| 127 | |
| 128 | if (!toonie) |
| 129 | return -ENOMEM; |
| 130 | |
| 131 | strlcpy(toonie->codec.name, "toonie", sizeof(toonie->codec.name)); |
| 132 | toonie->codec.owner = THIS_MODULE; |
| 133 | toonie->codec.init = toonie_init_codec; |
| 134 | toonie->codec.exit = toonie_exit_codec; |
Johannes Berg | 888dcb7 | 2008-10-23 15:47:56 +0200 | [diff] [blame] | 135 | |
Johannes Berg | f3d9478 | 2006-06-21 15:42:43 +0200 | [diff] [blame] | 136 | if (aoa_codec_register(&toonie->codec)) { |
| 137 | kfree(toonie); |
| 138 | return -EINVAL; |
| 139 | } |
| 140 | |
| 141 | return 0; |
| 142 | } |
| 143 | |
| 144 | static void __exit toonie_exit(void) |
| 145 | { |
| 146 | aoa_codec_unregister(&toonie->codec); |
| 147 | kfree(toonie); |
| 148 | } |
| 149 | |
| 150 | module_init(toonie_init); |
| 151 | module_exit(toonie_exit); |