On 06/24/2017 11:59 AM, Alexandre Belloni wrote:
> Hi,
>
> This seems mostly good.
>
> On 15/06/2017 at 12:59:04 -0700, Florian Fainelli wrote:
>> +static void wktmr_read(struct brcmstb_waketmr *timer,
>> + struct wktmr_time *t)
>> +{
>> + u32 tmp;
>> +
>
> To be sure, is this IP always 32bit, even on 64bit platforms?
Correct, it's only 32-bit capable (saw the recent discussions about the
2038yr "problem"...).
>
>> + do {
>> + t->sec = readl_relaxed(timer->base + BRCMSTB_WKTMR_COUNTER);
>> + tmp = readl_relaxed(timer->base + BRCMSTB_WKTMR_PRESCALER_VAL);
>> + } while (tmp >= timer->rate);
>> +
>> + t->pre = timer->rate - tmp;
>> +}
>> +
>
> [...]
>
>> +static int brcmstb_waketmr_settime(struct device *dev,
>> + struct rtc_time *tm)
>> +{
>> + struct brcmstb_waketmr *timer = dev_get_drvdata(dev);
>> + unsigned long sec;
>> + int ret;
>> +
>> + ret = rtc_valid_tm(tm);
>> + if (ret)
>> + return ret;
>> +
>
> There is no way this function can be called without a valid tm. The only
> caller checks before calling.
OK.
>
>> + rtc_tm_to_time(tm, &sec);
>> +
>> + dev_dbg(dev, "%s: sec=%ld\n", __func__, sec);
>> + writel_relaxed(sec, timer->base + BRCMSTB_WKTMR_COUNTER);
>> +
>> + return 0;
>> +}
>> +
>> +static int brcmstb_waketmr_getalarm(struct device *dev,
>> + struct rtc_wkalrm *alarm)
>> +{
>> + struct brcmstb_waketmr *timer = dev_get_drvdata(dev);
>> + unsigned long sec;
>> + u32 reg;
>> +
>> + sec = readl_relaxed(timer->base + BRCMSTB_WKTMR_ALARM);
>> + if (sec == 0) {
>> + /* Alarm is disabled */
>> + alarm->enabled = 0;
>> + alarm->time.tm_mon = -1;
>> + alarm->time.tm_mday = -1;
>> + alarm->time.tm_year = -1;
>> + alarm->time.tm_hour = -1;
>> + alarm->time.tm_min = -1;
>> + alarm->time.tm_sec = -1;
>
> This is not needed since d68778b80dd7
Great, I will take that out.
Do you care whether some dev_dbg() prints are left in the driver or
should I remove those in v2?
>
>> + dev_dbg(dev, "%s: alarm is disabled\n", __func__);
>> + } else {
>> + /* Alarm is enabled */
>> + alarm->enabled = 1;
>> + rtc_time_to_tm(sec, &alarm->time);
>> + dev_dbg(dev, "%s: alarm is enabled\n", __func__);
>> + }
>> +
>> + reg = readl_relaxed(timer->base + BRCMSTB_WKTMR_EVENT);
>> + alarm->pending = !!(reg & 1);
>> + dev_dbg(dev, "%s: alarm pending=%d\n", __func__, alarm->pending);
>> +
>> + return 0;
>> +}
>
--
Florian
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