This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / sound / aoa / codecs / snd-aoa-codec-toonie.c

diff --git a/sound/aoa/codecs/snd-aoa-codec-toonie.c b/sound/aoa/codecs/snd-aoa-codec-toonie.c
new file mode 100644 (file)
index 0000000..3c7d1d8
--- /dev/null
+++ b/sound/aoa/codecs/snd-aoa-codec-toonie.c
@@ -0,0 +1,150 @@
+/*
+ * 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);