diff options
Diffstat (limited to 'drivers/media/IR/ir-raw-event.c')
| -rw-r--r-- | drivers/media/IR/ir-raw-event.c | 57 |
1 files changed, 56 insertions, 1 deletions
diff --git a/drivers/media/IR/ir-raw-event.c b/drivers/media/IR/ir-raw-event.c index 0ae55433cef9..3eae128400ea 100644 --- a/drivers/media/IR/ir-raw-event.c +++ b/drivers/media/IR/ir-raw-event.c @@ -13,10 +13,18 @@ */ #include <media/ir-core.h> +#include <linux/workqueue.h> /* Define the max number of bit transitions per IR keycode */ #define MAX_IR_EVENT_SIZE 256 +/* Used to handle IR raw handler extensions */ +static LIST_HEAD(ir_raw_handler_list); +static DEFINE_MUTEX(ir_raw_handler_lock); + +/* Used to load the decoders */ +static struct work_struct wq_load; + static void ir_keyup_timer(unsigned long data) { struct input_dev *input_dev = (struct input_dev *)data; @@ -101,6 +109,7 @@ int ir_raw_event_handle(struct input_dev *input_dev) int rc; struct ir_raw_event *evs; int len, i; + struct ir_raw_handler *ir_raw_handler; /* * Store the events into a temporary buffer. This allows calling more than @@ -122,10 +131,56 @@ int ir_raw_event_handle(struct input_dev *input_dev) evs[i].type, (evs[i].delta.tv_nsec + 500) / 1000); } - rc = ir_nec_decode(input_dev, evs, len); + /* + * Call all ir decoders. This allows decoding the same event with + * more than one protocol handler. + * FIXME: better handle the returned code: does it make sense to use + * other decoders, if the first one already handled the IR? + */ + list_for_each_entry(ir_raw_handler, &ir_raw_handler_list, list) { + rc = ir_raw_handler->decode(input_dev, evs, len); + } kfree(evs); return rc; } EXPORT_SYMBOL_GPL(ir_raw_event_handle); + +/* + * Extension interface - used to register the IR decoders + */ + +int ir_raw_handler_register(struct ir_raw_handler *ir_raw_handler) +{ + mutex_lock(&ir_raw_handler_lock); + list_add_tail(&ir_raw_handler->list, &ir_raw_handler_list); + mutex_unlock(&ir_raw_handler_lock); + return 0; +} +EXPORT_SYMBOL(ir_raw_handler_register); + +void ir_raw_handler_unregister(struct ir_raw_handler *ir_raw_handler) +{ + mutex_lock(&ir_raw_handler_lock); + list_del(&ir_raw_handler->list); + mutex_unlock(&ir_raw_handler_lock); +} +EXPORT_SYMBOL(ir_raw_handler_unregister); + +static void init_decoders(struct work_struct *work) +{ + /* Load the decoder modules */ + + load_nec_decode(); + + /* If needed, we may later add some init code. In this case, + it is needed to change the CONFIG_MODULE test at ir-core.h + */ +} + +void ir_raw_init(void) +{ + INIT_WORK(&wq_load, init_decoders); + schedule_work(&wq_load); +}
\ No newline at end of file |
