linux-kernel - Re: [PATCH V2] rtc: add RTC driver for TPS6586x

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Date:	Thu, 27 Dec 2012 15:56:32 +0100
From:	Marc Dietrich <marvin24@....de>
To:	Laxman Dewangan <ldewangan@...dia.com>
Cc:	akpm@...uxfoundation.org, a.zummo@...ertech.it,
	rtc-linux@...glegroups.com, linux-kernel@...r.kernel.org,
	swarren@...dia.com
Subject: Re: [PATCH V2] rtc: add RTC driver for TPS6586x

Hi Laxman,

On Friday 21 December 2012 20:42:28 you wrote:
> Add an RTC driver for TPS6586X chips by TI.
> This driver supports:
> - Setting and getting time and date.
> - Setting and reading alarm time.
> - Alarm and interrupt functionlity.
> 
> Signed-off-by: Laxman Dewangan <ldewangan@...dia.com>
> ---
> Changes from V1:
> - Remove WARN flag, just returning error is fine.
> - Register interrupt after rtc device register.
> 
>  drivers/rtc/Kconfig        |    8 +
>  drivers/rtc/Makefile       |    1 +
>  drivers/rtc/rtc-tps6586x.c |  356
> ++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 365
> insertions(+), 0 deletions(-)
>  create mode 100644 drivers/rtc/rtc-tps6586x.c
> 
....
>
> diff --git a/drivers/rtc/rtc-tps6586x.c b/drivers/rtc/rtc-tps6586x.c
> new file mode 100644
> index 0000000..d9a50a0
> --- /dev/null
> +++ b/drivers/rtc/rtc-tps6586x.c
....
>
> +static int tps6586x_rtc_probe(struct platform_device *pdev)
> +{
> +	struct device *tps_dev = to_tps6586x_dev(&pdev->dev);
> +	struct tps6586x_rtc *rtc;
> +	int ret;
> +
> +	rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL);
> +	if (!rtc)
> +		return -ENOMEM;
> +
> +	rtc->dev = &pdev->dev;
> +	rtc->irq = platform_get_irq(pdev, 0);
> +
> +	/* Set epoch start as 00:00:00:01:01:2000 */
> +	rtc->epoch_start = mktime(2000, 1, 1, 0, 0, 0);

any reason why you hard coded it to 2000? All boards I know use 2009, so with 
this patch, everyone needs to set his clock again.

Marc

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