linux-kernel - RE: [RFC PATCH] rtc/nxp: add FTM alarm driver as the wakeup source

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Date:   Wed, 2 Nov 2016 08:23:32 +0000
From:   Meng Yi <meng.yi@....com>
To:     Meng Yi <meng.yi@....com>,
        "a.zummo@...ertech.it" <a.zummo@...ertech.it>,
        "alexandre.belloni@...e-electrons.com" 
        <alexandre.belloni@...e-electrons.com>
CC:     "rtc-linux@...glegroups.com" <rtc-linux@...glegroups.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [RFC PATCH] rtc/nxp: add FTM alarm driver as the wakeup source

> +
> +static int ftm_alarm_irq_enable(struct device *dev, unsigned int
> +enabled) {
> +	if (enabled)
> +		ftm_irq_enable(true);
> +	else
> +		ftm_irq_enable(false);
> +
> +	return 0;
> +}
> +
> +static int nxp_ftm_rtc_read_time(struct device *dev, struct rtc_time
> +*tm) {
> +	struct timeval time;
> +	unsigned long local_time;
> +
> +	do_gettimeofday(&time);
> +	local_time = (u32)(time.tv_sec - (sys_tz.tz_minuteswest * 60));
> +	rtc_time_to_tm(local_time, tm);
> +
> +	return 0;
> +}
> +

This is not really getting time from the RTC since FTM is not a RTC device,
But we need to get the time to setup alarm, so we are using system time for now.
Anybody have better idea?

Meng