Re: at91rm9200 ide driver for harddisk

jonghne <at> 163.com wrote:
> I am studying ide driver, I want to use harddisk on at91rm9200 board, the system is linux-2.6.15. Is the
main transplanting step as follows:
> first use ide_setup_ports(), then use ide_register_hw().
> I cannot find any more information further .

You studied drivers/ide/arm?
Which information do you need?

> Who has some experience and information for transplanting ide harddisk to ARM-linux system? Is there any
example and codes? not only for at91rm9200 but for other cpu(like s3c2410 , xscale and so on) is  also ok. 
I am using an HDD with the AT91RM9200. The driver is based on
linux/drivers/ide/arm/bast-ide.c

Basicly just do the setup of timing and irq pins, fill up a hw_regs_t struct
and call ide_register_hw(). Maybe one ioremap() is needed as well.

I can send you my (quick & dirty) file.

One thing I noticed is that at least with 2.6.14 you can't realy use a GPIO
irq for IDE since they are triggered on both edges. Thus for one hdd irq you
get to irqs in the ide layer ...

--
Steven

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