From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Folkert van Heusden <folkert@vanheusden.com>
Cc: linux-kernel@vger.kernel.org, udovdh@xs4all.nl
Subject: Re: [RS232] setting trigger-level of fifo
Date: Wed, 9 Jan 2008 17:09:07 +0000 [thread overview]
Message-ID: <20080109170907.4b05d71b@lxorguk.ukuu.org.uk> (raw)
In-Reply-To: <20080109155412.GX8331@vanheusden.com>
> serial8250_set_mctrl(&up->port, up->port.mctrl);
> spin_unlock_irqrestore(&up->port.lock, flags);
> }
>
> But I don't know how to interface this to an ioctl or so.
tty ioctl calls both ldisc and driver ioctls (in your case the
serial_core ioctl). The triggers get recomputed in the 8250 driver so you
may need to think about how you handle speed changes automatically
adjusting trigger levels.
Alan
prev parent reply other threads:[~2008-01-09 17:11 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-09 15:32 Folkert van Heusden
2008-01-09 15:54 ` Folkert van Heusden
2008-01-09 17:09 ` Alan Cox [this message]
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