From: Jonathan Marek <jonathan@xxxxxxxx> Qualcomm x1e80100 firmware sets the ownership of the RTC alarm to ADSP. Thus writing to RTC alarm registers and receiving alarm interrupts is not possible. Add a qcom,no-alarm flag to support RTC on this platform. Signed-off-by: Jonathan Marek <jonathan@xxxxxxxx> Link: https://lore.kernel.org/r/20241015004945.3676-2-jonathan@xxxxxxxx [ johan: drop no_alarm flag and restructure probe() ] Signed-off-by: Johan Hovold <johan+linaro@xxxxxxxxxx> --- drivers/rtc/rtc-pm8xxx.c | 43 ++++++++++++++++++++++------------------ 1 file changed, 24 insertions(+), 19 deletions(-) diff --git a/drivers/rtc/rtc-pm8xxx.c b/drivers/rtc/rtc-pm8xxx.c index 049daa39c417..f9755fb9eaa5 100644 --- a/drivers/rtc/rtc-pm8xxx.c +++ b/drivers/rtc/rtc-pm8xxx.c @@ -590,9 +590,11 @@ static int pm8xxx_rtc_probe(struct platform_device *pdev) if (!rtc_dd->regmap) return -ENXIO; - rtc_dd->alarm_irq = platform_get_irq(pdev, 0); - if (rtc_dd->alarm_irq < 0) - return -ENXIO; + if (!of_property_read_bool(pdev->dev.of_node, "qcom,no-alarm")) { + rtc_dd->alarm_irq = platform_get_irq(pdev, 0); + if (rtc_dd->alarm_irq < 0) + return -ENXIO; + } rtc_dd->allow_set_time = of_property_read_bool(pdev->dev.of_node, "allow-set-time"); @@ -631,8 +633,6 @@ static int pm8xxx_rtc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, rtc_dd); - device_init_wakeup(&pdev->dev, 1); - rtc_dd->rtc = devm_rtc_allocate_device(&pdev->dev); if (IS_ERR(rtc_dd->rtc)) return PTR_ERR(rtc_dd->rtc); @@ -640,27 +640,32 @@ static int pm8xxx_rtc_probe(struct platform_device *pdev) rtc_dd->rtc->ops = &pm8xxx_rtc_ops; rtc_dd->rtc->range_max = U32_MAX; - rc = devm_request_any_context_irq(&pdev->dev, rtc_dd->alarm_irq, - pm8xxx_alarm_trigger, - IRQF_TRIGGER_RISING, - "pm8xxx_rtc_alarm", rtc_dd); - if (rc < 0) - return rc; + if (rtc_dd->alarm_irq) { + rc = devm_request_any_context_irq(&pdev->dev, rtc_dd->alarm_irq, + pm8xxx_alarm_trigger, + IRQF_TRIGGER_RISING, + "pm8xxx_rtc_alarm", rtc_dd); + if (rc < 0) + return rc; - rc = devm_rtc_register_device(rtc_dd->rtc); - if (rc) - return rc; + rc = dev_pm_set_wake_irq(&pdev->dev, rtc_dd->alarm_irq); + if (rc) + return rc; - rc = dev_pm_set_wake_irq(&pdev->dev, rtc_dd->alarm_irq); - if (rc) - return rc; + device_init_wakeup(&pdev->dev, 1); + } else { + clear_bit(RTC_FEATURE_ALARM, rtc_dd->rtc->features); + } - return 0; + return devm_rtc_register_device(rtc_dd->rtc); } static void pm8xxx_remove(struct platform_device *pdev) { - dev_pm_clear_wake_irq(&pdev->dev); + struct pm8xxx_rtc *rtc_dd = platform_get_drvdata(pdev); + + if (rtc_dd->alarm_irq) + dev_pm_clear_wake_irq(&pdev->dev); } static void pm8xxx_shutdown(struct platform_device *pdev) -- 2.45.2
