static void init_decoders(struct work_struct *work)
{
/* Load the decoder modules */
load_nec_decode();
load_rc5_decode();
load_rc6_decode();
load_jvc_decode();
load_sony_decode();
load_lirc_codec();
/* 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)
{
/* Load the decoder modules */
load_nec_decode();
load_rc5_decode();
load_rc6_decode();
load_jvc_decode();
load_sony_decode();
load_sanyo_decode();
load_sharp_decode();
load_mce_kbd_decode();
load_lirc_codec();
/* If needed, we may later add some init code. In this case,
it is needed to change the CONFIG_MODULE test at rc-core.h
*/
}
static void ir_raw_event_work(struct work_struct *work)
{
struct ir_raw_event ev;
struct ir_raw_handler *handler;
struct ir_raw_event_ctrl *raw =
container_of(work, struct ir_raw_event_ctrl, rx_work);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33)
while (kfifo_get(raw->kfifo, (void *)&ev, sizeof(ev)) == sizeof(ev)) {
#else
while (kfifo_out(&raw->kfifo, &ev, sizeof(ev)) == sizeof(ev)) {
#endif
spin_lock(&ir_raw_handler_lock);
list_for_each_entry(handler, &ir_raw_handler_list, list)
handler->decode(raw->input_dev, ev);
spin_unlock(&ir_raw_handler_lock);
raw->prev_ev = ev;
}
}
/**
* ir_raw_event_store() - pass a pulse/space duration to the raw ir decoders
* @input_dev: the struct input_dev device descriptor
* @ev: the struct ir_raw_event descriptor of the pulse/space
*
* This routine (which may be called from an interrupt context) stores a
* pulse/space duration for the raw ir decoding state machines. Pulses are
* signalled as positive values and spaces as negative values. A zero value
* will reset the decoding state machines.
*/
int ir_raw_event_store(struct input_dev *input_dev, struct ir_raw_event *ev)
{
struct ir_input_dev *ir = input_get_drvdata(input_dev);
if (!ir->raw)
return -EINVAL;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33)
if (kfifo_put(ir->raw->kfifo, (void *)ev, sizeof(*ev)) != sizeof(*ev))
return -ENOMEM;
#else
if (kfifo_in(&ir->raw->kfifo, ev, sizeof(*ev)) != sizeof(*ev))
return -ENOMEM;
#endif
return 0;
}
EXPORT_SYMBOL_GPL(ir_raw_event_store);
/**
* ir_raw_event_store_edge() - notify raw ir decoders of the start of a pulse/space
* @input_dev: the struct input_dev device descriptor
* @type: the type of the event that has occurred
*
* This routine (which may be called from an interrupt context) is used to
* store the beginning of an ir pulse or space (or the start/end of ir
* reception) for the raw ir decoding state machines. This is used by
* hardware which does not provide durations directly but only interrupts
* (or similar events) on state change.
*/
int ir_raw_event_store_edge(struct input_dev *input_dev, enum raw_event_type type)
{
struct ir_input_dev *ir = input_get_drvdata(input_dev);
ktime_t now;
s64 delta; /* ns */
struct ir_raw_event ev;
int rc = 0;
if (!ir->raw)
return -EINVAL;
now = ktime_get();
delta = ktime_to_ns(ktime_sub(now, ir->raw->last_event));
/* Check for a long duration since last event or if we're
* being called for the first time, note that delta can't
* possibly be negative.
*/
ev.duration = 0;
if (delta > IR_MAX_DURATION || !ir->raw->last_type)
type |= IR_START_EVENT;
else
ev.duration = delta;
if (type & IR_START_EVENT)
ir_raw_event_reset(input_dev);
else if (ir->raw->last_type & IR_SPACE) {
ev.pulse = false;
rc = ir_raw_event_store(input_dev, &ev);
} else if (ir->raw->last_type & IR_PULSE) {
ev.pulse = true;
rc = ir_raw_event_store(input_dev, &ev);
} else
return 0;
ir->raw->last_event = now;
ir->raw->last_type = type;
return rc;
}
EXPORT_SYMBOL_GPL(ir_raw_event_store_edge);
/**
* ir_raw_event_handle() - schedules the decoding of stored ir data
* @input_dev: the struct input_dev device descriptor
*
* This routine will signal the workqueue to start decoding stored ir data.
*/
void ir_raw_event_handle(struct input_dev *input_dev)
{
struct ir_input_dev *ir = input_get_drvdata(input_dev);
if (!ir->raw)
return;
schedule_work(&ir->raw->rx_work);
}
EXPORT_SYMBOL_GPL(ir_raw_event_handle);
/* used internally by the sysfs interface */
u64
ir_raw_get_allowed_protocols()
{
u64 protocols;
spin_lock(&ir_raw_handler_lock);
protocols = available_protocols;
spin_unlock(&ir_raw_handler_lock);
return protocols;
}
/*
* Used to (un)register raw event clients
*/
int ir_raw_event_register(struct input_dev *input_dev)
{
struct ir_input_dev *ir = input_get_drvdata(input_dev);
int rc;
struct ir_raw_handler *handler;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33)
spinlock_t ir_raw_lock;
#endif
ir->raw = kzalloc(sizeof(*ir->raw), GFP_KERNEL);
if (!ir->raw)
return -ENOMEM;
ir->raw->input_dev = input_dev;
INIT_WORK(&ir->raw->rx_work, ir_raw_event_work);
ir->raw->enabled_protocols = ~0;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33)
spin_lock_init(&ir_raw_lock);
ir->raw->kfifo = kfifo_alloc(sizeof(s64) * MAX_IR_EVENT_SIZE, GFP_KERNEL, &ir_raw_lock);
#else
rc = kfifo_alloc(&ir->raw->kfifo, sizeof(s64) * MAX_IR_EVENT_SIZE,
GFP_KERNEL);
#endif
if (rc < 0) {
kfree(ir->raw);
ir->raw = NULL;
return rc;
}
spin_lock(&ir_raw_handler_lock);
list_add_tail(&ir->raw->list, &ir_raw_client_list);
list_for_each_entry(handler, &ir_raw_handler_list, list)
if (handler->raw_register)
handler->raw_register(ir->raw->input_dev);
spin_unlock(&ir_raw_handler_lock);
return 0;
}
void ir_raw_event_unregister(struct input_dev *input_dev)
{
struct ir_input_dev *ir = input_get_drvdata(input_dev);
struct ir_raw_handler *handler;
if (!ir->raw)
return;
cancel_work_sync(&ir->raw->rx_work);
spin_lock(&ir_raw_handler_lock);
list_del(&ir->raw->list);
list_for_each_entry(handler, &ir_raw_handler_list, list)
if (handler->raw_unregister)
handler->raw_unregister(ir->raw->input_dev);
spin_unlock(&ir_raw_handler_lock);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33)
kfifo_free(ir->raw->kfifo);
#else
kfifo_free(&ir->raw->kfifo);
#endif
kfree(ir->raw);
ir->raw = NULL;
}
/*
* Extension interface - used to register the IR decoders
*/
int ir_raw_handler_register(struct ir_raw_handler *ir_raw_handler)
{
struct ir_raw_event_ctrl *raw;
spin_lock(&ir_raw_handler_lock);
list_add_tail(&ir_raw_handler->list, &ir_raw_handler_list);
if (ir_raw_handler->raw_register)
list_for_each_entry(raw, &ir_raw_client_list, list)
ir_raw_handler->raw_register(raw->input_dev);
available_protocols |= ir_raw_handler->protocols;
spin_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)
{
struct ir_raw_event_ctrl *raw;
spin_lock(&ir_raw_handler_lock);
list_del(&ir_raw_handler->list);
if (ir_raw_handler->raw_unregister)
list_for_each_entry(raw, &ir_raw_client_list, list)
ir_raw_handler->raw_unregister(raw->input_dev);
available_protocols &= ~ir_raw_handler->protocols;
spin_unlock(&ir_raw_handler_lock);
}
EXPORT_SYMBOL(ir_raw_handler_unregister);
#ifdef MODULE
static void init_decoders(struct work_struct *work)
{
/* Load the decoder modules */
load_nec_decode();
load_rc5_decode();
load_rc6_decode();
load_jvc_decode();
load_sony_decode();
load_lirc_codec();
/* 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
*/
}
