示例#1
0
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
	 */
}
示例#2
0
文件: ir-raw.c 项目: 7799/linux
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
	 */
}
示例#3
0
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
     */
}