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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 24a9acd28160..000000000000 --- a/sound/oss/ac97_plugin_ad1980.c +++ /dev/null | |||
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| 1 | /* | ||
| 2 | ac97_plugin_ad1980.c Copyright (C) 2003 Red Hat, Inc. All rights reserved. | ||
| 3 | |||
| 4 | The contents of this file are subject to the Open Software License version 1.1 | ||
| 5 | that can be found at http://www.opensource.org/licenses/osl-1.1.txt and is | ||
| 6 | included herein by reference. | ||
| 7 | |||
| 8 | Alternatively, the contents of this file may be used under the | ||
| 9 | terms of the GNU General Public License version 2 (the "GPL") as | ||
| 10 | distributed in the kernel source COPYING file, in which | ||
| 11 | case the provisions of the GPL are applicable instead of the | ||
| 12 | above. If you wish to allow the use of your version of this file | ||
| 13 | only under the terms of the GPL and not to allow others to use | ||
| 14 | your version of this file under the OSL, indicate your decision | ||
| 15 | by deleting the provisions above and replace them with the notice | ||
| 16 | and other provisions required by the GPL. If you do not delete | ||
| 17 | the provisions above, a recipient may use your version of this | ||
| 18 | file under either the OSL or the GPL. | ||
| 19 | |||
| 20 | Authors: Alan Cox <alan@redhat.com> | ||
| 21 | |||
| 22 | This is an example codec plugin. This one switches the connections | ||
| 23 | around to match the setups some vendors use with audio switched to | ||
| 24 | non standard front connectors not the normal rear ones | ||
| 25 | |||
| 26 | This code primarily exists to demonstrate how to use the codec | ||
| 27 | interface | ||
| 28 | |||
| 29 | */ | ||
| 30 | |||
| 31 | #include <linux/config.h> | ||
| 32 | #include <linux/module.h> | ||
| 33 | #include <linux/init.h> | ||
| 34 | #include <linux/kernel.h> | ||
| 35 | #include <linux/ac97_codec.h> | ||
| 36 | |||
| 37 | /** | ||
| 38 | * ad1980_remove - codec remove callback | ||
| 39 | * @codec: The codec that is being removed | ||
| 40 | * | ||
| 41 | * This callback occurs when an AC97 codec is being removed. A | ||
| 42 | * codec remove call will not occur for a codec during that codec | ||
| 43 | * probe callback. | ||
| 44 | * | ||
| 45 | * Most drivers will need to lock their remove versus their | ||
| 46 | * use of the codec after the probe function. | ||
| 47 | */ | ||
| 48 | |||
| 49 | static void __devexit ad1980_remove(struct ac97_codec *codec, struct ac97_driver *driver) | ||
| 50 | { | ||
| 51 | /* Nothing to do in the simple example */ | ||
| 52 | } | ||
| 53 | |||
| 54 | |||
| 55 | /** | ||
| 56 | * ad1980_probe - codec found callback | ||
| 57 | * @codec: ac97 codec matching the idents | ||
| 58 | * @driver: ac97_driver it matched | ||
| 59 | * | ||
| 60 | * This entry point is called when a codec is found which matches | ||
| 61 | * the driver. At the point it is called the codec is basically | ||
| 62 | * operational, mixer operations have been initialised and can | ||
| 63 | * be overriden. Called in process context. The field driver_private | ||
| 64 | * is available for the driver to use to store stuff. | ||
| 65 | * | ||
| 66 | * The caller can claim the device by returning zero, or return | ||
| 67 | * a negative error code. | ||
| 68 | */ | ||
| 69 | |||
| 70 | static int ad1980_probe(struct ac97_codec *codec, struct ac97_driver *driver) | ||
| 71 | { | ||
| 72 | u16 control; | ||
| 73 | |||
| 74 | #define AC97_AD_MISC 0x76 | ||
| 75 | |||
| 76 | /* Switch the inputs/outputs over (from Dell code) */ | ||
| 77 | control = codec->codec_read(codec, AC97_AD_MISC); | ||
| 78 | codec->codec_write(codec, AC97_AD_MISC, control | 0x4420); | ||
| 79 | |||
| 80 | /* We could refuse the device since we dont need to hang around, | ||
| 81 | but we will claim it */ | ||
| 82 | return 0; | ||
| 83 | } | ||
| 84 | |||
| 85 | |||
| 86 | static struct ac97_driver ad1980_driver = { | ||
| 87 | .codec_id = 0x41445370, | ||
| 88 | .codec_mask = 0xFFFFFFFF, | ||
| 89 | .name = "AD1980 example", | ||
| 90 | .probe = ad1980_probe, | ||
| 91 | .remove = __devexit_p(ad1980_remove), | ||
| 92 | }; | ||
| 93 | |||
| 94 | /** | ||
| 95 | * ad1980_exit - module exit path | ||
| 96 | * | ||
| 97 | * Our module is being unloaded. At this point unregister_driver | ||
| 98 | * will call back our remove handler for any existing codecs. You | ||
| 99 | * may not unregister_driver from interrupt context or from a | ||
| 100 | * probe/remove callback. | ||
| 101 | */ | ||
| 102 | |||
| 103 | static void ad1980_exit(void) | ||
| 104 | { | ||
| 105 | ac97_unregister_driver(&ad1980_driver); | ||
| 106 | } | ||
| 107 | |||
| 108 | /** | ||
| 109 | * ad1980_init - set up ad1980 handlers | ||
| 110 | * | ||
| 111 | * After we call the register function it will call our probe | ||
| 112 | * function for each existing matching device before returning to us. | ||
| 113 | * Any devices appearing afterwards whose id's match the codec_id | ||
| 114 | * will also cause the probe function to be called. | ||
| 115 | * You may not register_driver from interrupt context or from a | ||
| 116 | * probe/remove callback. | ||
| 117 | */ | ||
| 118 | |||
| 119 | static int ad1980_init(void) | ||
| 120 | { | ||
| 121 | return ac97_register_driver(&ad1980_driver); | ||
| 122 | } | ||
| 123 | |||
| 124 | module_init(ad1980_init); | ||
| 125 | module_exit(ad1980_exit); | ||
| 126 | MODULE_LICENSE("GPL"); | ||