linux-kernel - Re: [rtc-linux] [PATCH] ARM: NUC900: add rtc controller driver support for NUC900

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Message-ID: <20091123092141.519d0ec1@linux.lan.towertech.it>
Date:	Mon, 23 Nov 2009 09:21:41 +0100
From:	Alessandro Zummo <a.zummo@...ertech.it>
To:	Wan ZongShun <mcuos.com@...il.com>
Cc:	rtc-linux@...glegroups.com, Paul Gortmaker <p_gortmaker@...oo.com>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [rtc-linux] [PATCH] ARM: NUC900: add rtc controller driver
 support  for NUC900

On Mon, 23 Nov 2009 14:35:29 +0800
Wan ZongShun <mcuos.com@...il.com> wrote:

> Thanks a lot for your advice, and I have fixed my patch.
> But, I have a question ,which is that why do not implement ops->ioctl()
> unless absolutely necessary? and I see many other rtc driver have implemented it. 

 That's because the RTC framework will provide one
 for you if you define the irq functions in your 
 rtc_ops. check *_irq_enable, irq_set_state, irq_set_freq.

-- 

 Best regards,

 Alessandro Zummo,
  Tower Technologies - Torino, Italy

  http://www.towertech.it

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