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media: rc: report receiver and transmitter type on device register 

On the raspberry pi, we might have two lirc devices; one for sending and
one for receiving. This change makes it much more apparent which one
is which.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Sean Young 2018-03-27 11:24:05 -04:00 committed by Mauro Carvalho Chehab
parent 536f0f5538
commit ed8c34d7ec
2 changed files with 21 additions and 3 deletions
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2
Documentation/media/uapi/rc/lirc-dev-intro.rst
View File

@ -18,7 +18,7 @@ Example dmesg output upon a driver registering w/LIRC:
.. code-block:: none
$ dmesg |grep lirc_dev
rc rc0: lirc_dev: driver mceusb registered at minor = 0
rc rc0: lirc_dev: driver mceusb registered at minor = 0, raw IR receiver, raw IR transmitter
What you should see for a chardev:

22
drivers/media/rc/lirc_dev.c
View File

@ -735,6 +735,7 @@ static void lirc_release_device(struct device *ld)
int ir_lirc_register(struct rc_dev *dev)
{
const char *rx_type, *tx_type;
int err, minor;
minor = ida_simple_get(&lirc_ida, 0, RC_DEV_MAX, GFP_KERNEL);
@ -759,8 +760,25 @@ int ir_lirc_register(struct rc_dev *dev)
get_device(&dev->dev);
dev_info(&dev->dev, "lirc_dev: driver %s registered at minor = %d",
dev->driver_name, minor);
switch (dev->driver_type) {
case RC_DRIVER_SCANCODE:
rx_type = "scancode";
break;
case RC_DRIVER_IR_RAW:
rx_type = "raw IR";
break;
default:
rx_type = "no";
break;
}
if (dev->tx_ir)
tx_type = "raw IR";
else
tx_type = "no";
dev_info(&dev->dev, "lirc_dev: driver %s registered at minor = %d, %s receiver, %s transmitter",
dev->driver_name, minor, rx_type, tx_type);
return 0;