linux-kernel - Re: Regarding USB-to-Serial device driver

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Date:	Tue, 14 Sep 2010 06:19:25 -0700
From:	Greg KH <gregkh@...e.de>
To:	Raju Rameshwar Uprade <rajsingh@...a.tifr.res.in>
Cc:	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: Regarding USB-to-Serial device driver

On Tue, Sep 14, 2010 at 11:41:42AM +0530, Raju Rameshwar Uprade wrote:
>  
> > usb to serial devices are known for sending data in "chunks", that's the
> > way the devices work (cheap, tiny, 8bit microcontrollers in the device)
> > and they break things up like this all the time.
> > 
> 
>  Greg,
>       I am able to send data bytes properly.One problem, I am currently facing is to
> enable Address parity and Data parity.
> 
> For Address parity we have to give a mark parity ( 0x04 ).
> For Data parity we have to give a space parity ( 0x05 ).
> I don't know how I can enable parity in pl2303.c.

Enable it like you would for any other serial port from userspace using
the proper termios bits.

good luck,

greg k-h
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