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From: "Stuart MacDonald" <stuartm@connecttech.com>
To: "'Alan Cox'" <alan@lxorguk.ukuu.org.uk>,
	"'Krzysztof Halasa'" <khc@pm.waw.pl>
Cc: "'David Woodhouse'" <dwmw2@infradead.org>,
	<linux-serial@vger.kernel.org>,
	"'LKML'" <linux-kernel@vger.kernel.org>
Subject: RE: Serial custom speed deprecated?
Date: Fri, 25 Aug 2006 11:01:38 -0400	[thread overview]
Message-ID: <043201c6c857$5ddd6c20$294b82ce@stuartm> (raw)
In-Reply-To: <1156441293.3007.184.camel@localhost.localdomain>

From: On Behalf Of Alan Cox
> At this point I think we need
> 
> -	An ioctl to set/get the actual baud rate input/output
> -	Some kind of termios flag to indicate they are being 
> used (as we have
> CBAUDEX now). [We could "borrow" the 4Mbit one and dual use it IMHO]
> 
> For drivers tty_get_baud_rate would return the actual speed as before.
> 
> We would need a driver ->set_speed method for the cases where
> - ioctl is called to set specific board rate
> - OR termios values for tty speed change
> - While we are at it we might want to make ->set_termios also 
> allowed to fail
> 
> [and if you had no ->set_speed method non standard speeds would be
> refused by the tty layer for back compat]
> 
> Anyone got any problems with this before I go and implement it ?

Sounds good.

..Stu


WARNING: multiple messages have this Message-ID (diff)
From: "Stuart MacDonald" <stuartm@connecttech.com>
To: 'Alan Cox' <alan@lxorguk.ukuu.org.uk>,
	'Krzysztof Halasa' <khc@pm.waw.pl>
Cc: 'David Woodhouse' <dwmw2@infradead.org>,
	linux-serial@vger.kernel.org,
	'LKML' <linux-kernel@vger.kernel.org>
Subject: RE: Serial custom speed deprecated?
Date: Fri, 25 Aug 2006 11:01:38 -0400	[thread overview]
Message-ID: <043201c6c857$5ddd6c20$294b82ce@stuartm> (raw)
In-Reply-To: <1156441293.3007.184.camel@localhost.localdomain>

From: On Behalf Of Alan Cox
> At this point I think we need
> 
> -	An ioctl to set/get the actual baud rate input/output
> -	Some kind of termios flag to indicate they are being 
> used (as we have
> CBAUDEX now). [We could "borrow" the 4Mbit one and dual use it IMHO]
> 
> For drivers tty_get_baud_rate would return the actual speed as before.
> 
> We would need a driver ->set_speed method for the cases where
> - ioctl is called to set specific board rate
> - OR termios values for tty speed change
> - While we are at it we might want to make ->set_termios also 
> allowed to fail
> 
> [and if you had no ->set_speed method non standard speeds would be
> refused by the tty layer for back compat]
> 
> Anyone got any problems with this before I go and implement it ?

Sounds good.

..Stu


  parent reply	other threads:[~2006-08-25 15:02 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-08-23 21:41 Serial custom speed deprecated? Stuart MacDonald
2006-08-24  9:18 ` David Woodhouse
2006-08-24 12:41   ` Stuart MacDonald
2006-08-24 13:19     ` Alan Cox
2006-08-24 13:03       ` David Woodhouse
2006-08-24 16:27   ` Krzysztof Halasa
2006-08-24 17:41     ` Alan Cox
2006-08-24 18:51       ` Krzysztof Halasa
2006-08-24 20:43         ` linux-os (Dick Johnson)
2006-08-24 20:43           ` linux-os (Dick Johnson)
2006-08-24 22:11           ` Alan Cox
2006-08-27  6:52             ` Rogier Wolff
2006-08-27  6:52               ` Rogier Wolff
2006-08-27 10:00               ` Russell King
2006-08-28 14:14               ` Stuart MacDonald
2006-08-28 14:14                 ` Stuart MacDonald
2006-08-28 20:09                 ` Russell King
2006-08-29  6:20                   ` Rogier Wolff
2006-08-29  6:20                     ` Rogier Wolff
2006-08-29  7:46                     ` Russell King
2006-08-25 15:17           ` Stuart MacDonald
2006-08-25 15:17             ` Stuart MacDonald
2006-08-25 15:52             ` linux-os (Dick Johnson)
2006-08-25 15:52               ` linux-os (Dick Johnson)
2006-08-24 22:43         ` Alan Cox
2006-08-25 10:58           ` Krzysztof Halasa
2006-08-25 15:21           ` Stuart MacDonald
2006-08-25 15:21             ` Stuart MacDonald
2006-08-25 19:32             ` Russell King
2006-08-25 20:21               ` Stuart MacDonald
2006-08-25 20:21                 ` Stuart MacDonald
2006-08-25 20:54                 ` linux-os (Dick Johnson)
2006-08-25 20:54                   ` linux-os (Dick Johnson)
2006-08-25 20:39               ` Theodore Tso
2006-08-26 12:16                 ` Krzysztof Halasa
2006-08-25 15:10         ` Stuart MacDonald
2006-08-25 15:10           ` Stuart MacDonald
2006-08-24 22:05       ` Russell King
2006-08-25 15:01       ` Stuart MacDonald [this message]
2006-08-25 15:01         ` Stuart MacDonald
     [not found] <6N8LR-22A-5@gated-at.bofh.it>
     [not found] ` <6Njxz-797-13@gated-at.bofh.it>
     [not found]   ` <6NqfR-5Ld-49@gated-at.bofh.it>
     [not found]     ` <6NrbQ-7Ab-27@gated-at.bofh.it>
     [not found]       ` <6NsB4-2GL-37@gated-at.bofh.it>
     [not found]         ` <6NvSc-1go-31@gated-at.bofh.it>
2006-08-25 11:40           ` Nick Craig-Wood
2006-08-26 18:16 linux
2006-08-26 19:37 ` Ian Stirling
2006-08-26 20:30   ` linux
2006-08-28 12:17 ` linux-os (Dick Johnson)
2006-08-28 14:39   ` Alan Cox
2006-08-28 14:50     ` linux-os (Dick Johnson)
2006-08-28 15:51       ` Michael Poole
2006-08-28 16:57         ` linux-os (Dick Johnson)
2006-08-28 17:40           ` Michael Poole
2006-08-28 18:04             ` linux-os (Dick Johnson)
2006-08-28 17:01       ` Alan Cox
2006-08-28 17:24         ` linux
2006-08-26 19:35 linux

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