Hi,
Very few comments below
On 05/07/2016 at 20:48:41 +0100, Ben Dooks wrote :
> +/* registers accessed from cpu bus */
> +#define RTC_REG(x) ((x) * 4) /* rtc registers 0-4 */
> +
> +#define LINE_SDI (1 << 2)
> +#define LINE_SEN (1 << 1)
> +#define LINE_SCLK (1 << 0)
> +
Maybe use BIT() here.
> +/* RTC interface layer functions */
> +
> +static int meson_rtc_gettime(struct device *dev, struct rtc_time *tm)
> +{
> + struct meson_rtc *rtc = dev_get_drvdata(dev);
> + int ret;
> + u32 time;
> +
> + mutex_lock(&rtc->lock);
> +
> + ret = meson_rtc_read(rtc, RTC_COUNTER, &time);
> + if (!ret) {
> + rtc_time_to_tm(time, tm);
Can you use the 64bit version?
> + dev_dbg(dev, "read time %lu\n", (unsigned long)time);
> + }
> +
> + mutex_unlock(&rtc->lock);
> + return ret;
> +}
> +
> +static int meson_rtc_settime(struct device *dev, struct rtc_time *tm)
> +{
> + struct meson_rtc *rtc = dev_get_drvdata(dev);
> + unsigned long time;
> + int ret;
> +
> + mutex_lock(&rtc->lock);
> +
> + rtc_tm_to_time(tm, &time);
Ditto.
--
Alexandre Belloni, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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