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Diffstat (limited to 'sound/oss/ac97_plugin_ad1980.c')
-rw-r--r-- | sound/oss/ac97_plugin_ad1980.c | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/sound/oss/ac97_plugin_ad1980.c b/sound/oss/ac97_plugin_ad1980.c deleted file mode 100644 index 24a9acd2816..00000000000 --- a/sound/oss/ac97_plugin_ad1980.c +++ /dev/null @@ -1,126 +0,0 @@ -/* - ac97_plugin_ad1980.c Copyright (C) 2003 Red Hat, Inc. All rights reserved. - - The contents of this file are subject to the Open Software License version 1.1 - that can be found at http://www.opensource.org/licenses/osl-1.1.txt and is - included herein by reference. - - Alternatively, the contents of this file may be used under the - terms of the GNU General Public License version 2 (the "GPL") as - distributed in the kernel source COPYING file, in which - case the provisions of the GPL are applicable instead of the - above. If you wish to allow the use of your version of this file - only under the terms of the GPL and not to allow others to use - your version of this file under the OSL, indicate your decision - by deleting the provisions above and replace them with the notice - and other provisions required by the GPL. If you do not delete - the provisions above, a recipient may use your version of this - file under either the OSL or the GPL. - - Authors: Alan Cox <alan@redhat.com> - - This is an example codec plugin. This one switches the connections - around to match the setups some vendors use with audio switched to - non standard front connectors not the normal rear ones - - This code primarily exists to demonstrate how to use the codec - interface - -*/ - -#include <linux/config.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/ac97_codec.h> - -/** - * ad1980_remove - codec remove callback - * @codec: The codec that is being removed - * - * This callback occurs when an AC97 codec is being removed. A - * codec remove call will not occur for a codec during that codec - * probe callback. - * - * Most drivers will need to lock their remove versus their - * use of the codec after the probe function. - */ - -static void __devexit ad1980_remove(struct ac97_codec *codec, struct ac97_driver *driver) -{ - /* Nothing to do in the simple example */ -} - - -/** - * ad1980_probe - codec found callback - * @codec: ac97 codec matching the idents - * @driver: ac97_driver it matched - * - * This entry point is called when a codec is found which matches - * the driver. At the point it is called the codec is basically - * operational, mixer operations have been initialised and can - * be overriden. Called in process context. The field driver_private - * is available for the driver to use to store stuff. - * - * The caller can claim the device by returning zero, or return - * a negative error code. - */ - -static int ad1980_probe(struct ac97_codec *codec, struct ac97_driver *driver) -{ - u16 control; - -#define AC97_AD_MISC 0x76 - - /* Switch the inputs/outputs over (from Dell code) */ - control = codec->codec_read(codec, AC97_AD_MISC); - codec->codec_write(codec, AC97_AD_MISC, control | 0x4420); - - /* We could refuse the device since we dont need to hang around, - but we will claim it */ - return 0; -} - - -static struct ac97_driver ad1980_driver = { - .codec_id = 0x41445370, - .codec_mask = 0xFFFFFFFF, - .name = "AD1980 example", - .probe = ad1980_probe, - .remove = __devexit_p(ad1980_remove), -}; - -/** - * ad1980_exit - module exit path - * - * Our module is being unloaded. At this point unregister_driver - * will call back our remove handler for any existing codecs. You - * may not unregister_driver from interrupt context or from a - * probe/remove callback. - */ - -static void ad1980_exit(void) -{ - ac97_unregister_driver(&ad1980_driver); -} - -/** - * ad1980_init - set up ad1980 handlers - * - * After we call the register function it will call our probe - * function for each existing matching device before returning to us. - * Any devices appearing afterwards whose id's match the codec_id - * will also cause the probe function to be called. - * You may not register_driver from interrupt context or from a - * probe/remove callback. - */ - -static int ad1980_init(void) -{ - return ac97_register_driver(&ad1980_driver); -} - -module_init(ad1980_init); -module_exit(ad1980_exit); -MODULE_LICENSE("GPL"); |