From: alan@linux.intel.com (Alan Cox)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 02/14] ARM : SAMSUNG : Add RS485 support.
Date: Tue, 1 Nov 2011 19:55:17 +0000 [thread overview]
Message-ID: <20111101195517.5334482c@bob.linux.org.uk> (raw)
In-Reply-To: <CAC=G6sxm9YJZsi_+Zq7YVYsQrw1SAFvnroPxGyH7JGRn7ko5nw@mail.gmail.com>
> The opinion part... ?I needed a timer to switch from transmit to
> receive after the FIFO was empty. ?I started by using the low
> resolution timer using jiffies first. ?I found that wasn't high enough
> resolution, so I switched to the Linux HRT. Currently I have both
> versions that can be selected by conditional compile. ?Should I
> just remove the low resolution timer completely or leave it in.
I would just remove the low res one. They should degrade to low res
timer equivalence anyway.
> Second, I have a chunk of code that if it could be made to work
> could off load the receiving to DMA up to the last couple of bytes
> then switch back to interrupts for the token byte. ?Should I leave
> that code in a #if 0 statement or should I just delete it.
Is it something that you are likely to debug or someone is going to
debug shortly ?
next prev parent reply other threads:[~2011-11-01 19:55 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <samsung_rs485>
2011-10-22 3:46 ` [PATCH 02/14] ARM : SAMSUNG : Add RS485 support Paul Schilling
2011-10-22 13:47 ` Russell King - ARM Linux
2011-10-23 17:12 ` Paul Schilling
2011-10-23 20:20 ` Russell King - ARM Linux
2011-11-01 12:18 ` Alan Cox
2011-11-01 14:57 ` Paul Schilling
2011-11-01 19:12 ` Paul Schilling
2011-11-01 19:22 ` Paul Schilling
2011-11-01 19:55 ` Alan Cox [this message]
2011-11-04 10:18 ` Nicolas Ferre
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