Re: is there a struct uart_driver like struct i2c_driver

[Cestonaro Thilo <thilo.cestonaro@ts.fujitsu.com>]

On 18.08.2014 15:50, Greg KH wrote:
> On Mon, Aug 18, 2014 at 03:43:27PM +0200, Cestonaro Thilo wrote:
>> Hey,
>>
>> do I need to do something like:
>> ----
>> f = filp_open("/dev/ttyS0", O_RDWR | O_NOCTTY | O_NDELAY, 0600);
>> fs=get_fs();
>> set_fs(KERNEL_DS);
>> ---
>> Is there really no API for a uart attached device to communicate with it?
>>
>> That would be the last thing I thought of :(.
> Wait, you want to talk to a serial port from within the kernel?  No,
> don't open the device node, just talk directly to the tty layer.  An
> example of code that does this is some of the bluetooth layer.
>
> good luck,
>
> greg k-h
>

 From the hci_uart stuff I got to the conclusion that I need to implement
a tty line discipline driver and change the corresponding tty's line 
discipline
to my own one.

Is this the best way or did I miss something? I ask again, cause writing 
a tty line discipline
looks rather complicate then straight forward and before I start doing it,
I want to be sure to not run against a wall :).

Cheers,
Thilo