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author | Stefan Ringel <stefan.ringel@arcor.de> | 2010-05-10 13:22:51 -0300 |
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committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-06-01 01:21:54 -0300 |
commit | 0439db75c1fbb28a3b314ae354582e4f180daf52 (patch) | |
tree | 545b05de65e8971d6658ef4b521a26d696f3e33c /drivers/staging/tm6000/tm6000-core.c | |
parent | 9e1d9e7bac5c2bafc3c0c51db88c15f3fbcec83f (diff) | |
download | op-kernel-dev-0439db75c1fbb28a3b314ae354582e4f180daf52.zip op-kernel-dev-0439db75c1fbb28a3b314ae354582e4f180daf52.tar.gz |
V4L/DVB: tm6000: add extension module support
add module init over tm6000 extension
Signed-off-by: Stefan Ringel <stefan.ringel@arcor.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/staging/tm6000/tm6000-core.c')
-rw-r--r-- | drivers/staging/tm6000/tm6000-core.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/drivers/staging/tm6000/tm6000-core.c b/drivers/staging/tm6000/tm6000-core.c index bfbc53b..1259ae5 100644 --- a/drivers/staging/tm6000/tm6000-core.c +++ b/drivers/staging/tm6000/tm6000-core.c @@ -600,3 +600,95 @@ printk("Original value=%d\n",val); return val; } EXPORT_SYMBOL_GPL(tm6000_set_audio_bitrate); + +static LIST_HEAD(tm6000_devlist); +static DEFINE_MUTEX(tm6000_devlist_mutex); + +/* + * tm6000_realease_resource() + */ + +void tm6000_remove_from_devlist(struct tm6000_core *dev) +{ + mutex_lock(&tm6000_devlist_mutex); + list_del(&dev->devlist); + mutex_unlock(&tm6000_devlist_mutex); +}; + +void tm6000_add_into_devlist(struct tm6000_core *dev) +{ + mutex_lock(&tm6000_devlist_mutex); + list_add_tail(&dev->devlist, &tm6000_devlist); + mutex_unlock(&tm6000_devlist_mutex); +}; + +/* + * Extension interface + */ + +static LIST_HEAD(tm6000_extension_devlist); +static DEFINE_MUTEX(tm6000_extension_devlist_lock); + +int tm6000_register_extension(struct tm6000_ops *ops) +{ + struct tm6000_core *dev = NULL; + + mutex_lock(&tm6000_devlist_mutex); + mutex_lock(&tm6000_extension_devlist_lock); + list_add_tail(&ops->next, &tm6000_extension_devlist); + list_for_each_entry(dev, &tm6000_devlist, devlist) { + if (dev) + ops->init(dev); + } + printk(KERN_INFO "tm6000: Initialized (%s) extension\n", ops->name); + mutex_unlock(&tm6000_extension_devlist_lock); + mutex_unlock(&tm6000_devlist_mutex); + return 0; +} +EXPORT_SYMBOL(tm6000_register_extension); + +void tm6000_unregister_extension(struct tm6000_ops *ops) +{ + struct tm6000_core *dev = NULL; + + mutex_lock(&tm6000_devlist_mutex); + list_for_each_entry(dev, &tm6000_devlist, devlist) { + if (dev) + ops->fini(dev); + } + + mutex_lock(&tm6000_extension_devlist_lock); + printk(KERN_INFO "tm6000: Remove (%s) extension\n", ops->name); + list_del(&ops->next); + mutex_unlock(&tm6000_extension_devlist_lock); + mutex_unlock(&tm6000_devlist_mutex); +} +EXPORT_SYMBOL(tm6000_unregister_extension); + +void tm6000_init_extension(struct tm6000_core *dev) +{ + struct tm6000_ops *ops = NULL; + + mutex_lock(&tm6000_extension_devlist_lock); + if (!list_empty(&tm6000_extension_devlist)) { + list_for_each_entry(ops, &tm6000_extension_devlist, next) { + if (ops->init) + ops->init(dev); + } + } + mutex_unlock(&tm6000_extension_devlist_lock); +} + +void tm6000_close_extension(struct tm6000_core *dev) +{ + struct tm6000_ops *ops = NULL; + + mutex_lock(&tm6000_extension_devlist_lock); + if (!list_empty(&tm6000_extension_devlist)) { + list_for_each_entry(ops, &tm6000_extension_devlist, next) { + if (ops->fini) + ops->fini(dev); + } + } + mutex_unlock(&tm6000_extension_devlist_lock); +} |