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Message-ID: <20060926114826.3f85b939@cad-250-152.norway.atmel.com>
Date: Tue, 26 Sep 2006 11:48:26 +0200
From: Haavard Skinnemoen <hskinnemoen@...el.com>
To: Andrew Victor <andrew@...people.com>
Cc: Russell King <rmk+lkml@....linux.org.uk>,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/3] at91_serial: Introduction
On 26 Sep 2006 11:28:11 +0200
Andrew Victor <andrew@...people.com> wrote:
> hi Haavard,
>
> > Maybe we can agree on a platform_data format so
> > that we can remove the #ifdef altogether?
>
> The platform_data structure is currently defined in
> include/asm-arm/arch-at91rm9200/board.h as:
>
> struct at91_uart_data {
> short use_dma_tx; /* use transmit DMA? */
> short use_dma_rx; /* use receive DMA? */
> };
>
> I don't think the DMA-support is currently in mainline, but is in the
> pending patches on http://maxim.org.za/AT91RM9200/2.6/
Are you going to submit it for 2.6.19? I want to try to slam a big
rename patch in without messing up too many not-yet-submitted patches...
> I guess we can just add another field:
> short no_remap; /* base address is already
> mapped */ (or something similar)
Or maybe even better:
void __iomem *regs; /* fixed mapping of base address */
to indicate the actual mapping (if it's NULL, it hasn't been mapped yet)
Haavard
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