> Subject: Re: [PATCH v2 3/4] rtc: bbnsm: Add the bbnsm rtc support
>
> On 26/12/2022 10:39:41+0800, Jacky Bai wrote:
> > +static int bbnsm_rtc_read_time(struct device *dev, struct rtc_time
> > +*tm) {
> > + struct bbnsm_rtc *bbnsm = dev_get_drvdata(dev);
> > + unsigned long time;
> > + u32 val;
> > +
> > + regmap_read(bbnsm->regmap, BBNSM_CTRL, &val);
> > + if ((val & RTC_EN_MSK) != RTC_EN) {
> > + dev_warn(dev, "RTC is not enabled, time is invalid!\n");
>
> I don't think this message is necessary.
>
Ok, will remove it.
> > + return -EINVAL;
> > + }
> > +
> > + time = bbnsm_read_counter(bbnsm);
> > + rtc_time64_to_tm(time, tm);
> > +
> > + return 0;
> > +}
> > +
>
> [...]
>
> > +static int bbnsm_rtc_probe(struct platform_device *pdev) {
> > + struct bbnsm_rtc *bbnsm;
> > + int ret;
> > +
> > + bbnsm = devm_kzalloc(&pdev->dev, sizeof(*bbnsm), GFP_KERNEL);
> > + if (!bbnsm)
> > + return -ENOMEM;
> > +
> > + bbnsm->rtc = devm_rtc_allocate_device(&pdev->dev);
> > +
> > + bbnsm->regmap =
> syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
> "nxp,bbnsm-regmap");
> > + if (IS_ERR(bbnsm->regmap)) {
> > + dev_err(&pdev->dev, "bbnsm get regmap failed\n");
>
> Maybe this should be a dev_dbg?
Fine, will fix in V3.
BR
>
> > + return PTR_ERR(bbnsm->regmap);
> > + }
> > +
> > + bbnsm->irq = platform_get_irq(pdev, 0);
> > + if (bbnsm->irq < 0)
> > + return bbnsm->irq;
> > +
> > + platform_set_drvdata(pdev, bbnsm);
> > +
> > + /* clear all the pending events */
> > + regmap_write(bbnsm->regmap, BBNSM_EVENTS, 0x7A);
> > +
> > + device_init_wakeup(&pdev->dev, true);
> > + dev_pm_set_wake_irq(&pdev->dev, bbnsm->irq);
> > +
> > + ret = devm_request_irq(&pdev->dev, bbnsm->irq,
> bbnsm_rtc_irq_handler,
> > + IRQF_SHARED, "rtc alarm", &pdev->dev);
> > + if (ret) {
> > + dev_err(&pdev->dev, "failed to request irq %d: %d\n",
> > + bbnsm->irq, ret);
> > + return ret;
> > + }
> > +
> > + bbnsm->rtc->ops = &bbnsm_rtc_ops;
> > + bbnsm->rtc->range_max = U32_MAX;
> > +
> > + return devm_rtc_register_device(bbnsm->rtc);
> > +}
> > +
> > +static const struct of_device_id bbnsm_dt_ids[] = {
> > + { .compatible = "nxp,bbnsm-rtc", },
> > + { /* sentinel */ },
> > +};
> > +MODULE_DEVICE_TABLE(of, bbnsm_dt_ids);
> > +
> > +static struct platform_driver bbnsm_rtc_driver = {
> > + .driver = {
> > + .name = "bbnsm_rtc",
> > + .of_match_table = bbnsm_dt_ids,
> > + },
> > + .probe = bbnsm_rtc_probe,
> > +};
> > +module_platform_driver(bbnsm_rtc_driver);
> > +
> > +MODULE_AUTHOR("Jacky Bai <ping.bai@xxxxxxx>");
> > +MODULE_DESCRIPTION("NXP BBNSM RTC Driver");
> MODULE_LICENSE("GPL");
> > --
> > 2.37.1
> >
>
> --
> Alexandre Belloni, co-owner and COO, Bootlin
> Embedded Linux and Kernel engineering
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