[media] rc-core: add support for IR raw transmitters
IR raw transmitter driver type is specified in the enum rc_driver_type as RC_DRIVER_IR_RAW_TX which includes all those devices that transmit raw stream of bit to a receiver. The data are provided by userspace applications, therefore they don't need any input device allocation, but still they need to be registered as raw devices. Suggested-by: Sean Young <sean@mess.org> Signed-off-by: Andi Shyti <andi.shyti@samsung.com> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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@ -1585,20 +1585,24 @@ struct rc_dev *rc_allocate_device(enum rc_driver_type type)
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if (!dev)
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return NULL;
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dev->input_dev = input_allocate_device();
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if (!dev->input_dev) {
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kfree(dev);
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return NULL;
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if (type != RC_DRIVER_IR_RAW_TX) {
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dev->input_dev = input_allocate_device();
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if (!dev->input_dev) {
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kfree(dev);
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return NULL;
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}
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dev->input_dev->getkeycode = ir_getkeycode;
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dev->input_dev->setkeycode = ir_setkeycode;
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input_set_drvdata(dev->input_dev, dev);
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setup_timer(&dev->timer_keyup, ir_timer_keyup,
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(unsigned long)dev);
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spin_lock_init(&dev->rc_map.lock);
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spin_lock_init(&dev->keylock);
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}
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dev->input_dev->getkeycode = ir_getkeycode;
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dev->input_dev->setkeycode = ir_setkeycode;
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input_set_drvdata(dev->input_dev, dev);
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spin_lock_init(&dev->rc_map.lock);
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spin_lock_init(&dev->keylock);
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mutex_init(&dev->lock);
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setup_timer(&dev->timer_keyup, ir_timer_keyup, (unsigned long)dev);
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dev->dev.type = &rc_dev_type;
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dev->dev.class = &rc_class;
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@ -1727,7 +1731,7 @@ static int rc_setup_rx_device(struct rc_dev *dev)
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static void rc_free_rx_device(struct rc_dev *dev)
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{
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if (!dev)
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if (!dev || dev->driver_type == RC_DRIVER_IR_RAW_TX)
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return;
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ir_free_table(&dev->rc_map);
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@ -1757,7 +1761,8 @@ int rc_register_device(struct rc_dev *dev)
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atomic_set(&dev->initialized, 0);
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dev->dev.groups = dev->sysfs_groups;
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dev->sysfs_groups[attr++] = &rc_dev_protocol_attr_grp;
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if (dev->driver_type != RC_DRIVER_IR_RAW_TX)
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dev->sysfs_groups[attr++] = &rc_dev_protocol_attr_grp;
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if (dev->s_filter)
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dev->sysfs_groups[attr++] = &rc_dev_filter_attr_grp;
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if (dev->s_wakeup_filter)
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@ -1773,11 +1778,14 @@ int rc_register_device(struct rc_dev *dev)
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dev->input_name ?: "Unspecified device", path ?: "N/A");
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kfree(path);
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rc = rc_setup_rx_device(dev);
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if (rc)
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goto out_dev;
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if (dev->driver_type != RC_DRIVER_IR_RAW_TX) {
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rc = rc_setup_rx_device(dev);
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if (rc)
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goto out_dev;
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}
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if (dev->driver_type == RC_DRIVER_IR_RAW) {
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if (dev->driver_type == RC_DRIVER_IR_RAW ||
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dev->driver_type == RC_DRIVER_IR_RAW_TX) {
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if (!raw_init) {
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request_module_nowait("ir-lirc-codec");
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raw_init = true;
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@ -32,13 +32,16 @@ do { \
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/**
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* enum rc_driver_type - type of the RC output
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*
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* @RC_DRIVER_SCANCODE: Driver or hardware generates a scancode
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* @RC_DRIVER_IR_RAW: Driver or hardware generates pulse/space sequences.
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* It needs a Infra-Red pulse/space decoder
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* @RC_DRIVER_SCANCODE: Driver or hardware generates a scancode
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* @RC_DRIVER_IR_RAW: Driver or hardware generates pulse/space sequences.
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* It needs a Infra-Red pulse/space decoder
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* @RC_DRIVER_IR_RAW_TX: Device transmitter only,
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* driver requires pulse/space data sequence.
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*/
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enum rc_driver_type {
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RC_DRIVER_SCANCODE = 0,
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RC_DRIVER_IR_RAW,
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RC_DRIVER_IR_RAW_TX,
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};
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/**
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