Merge "rtc: qpnp-rtc: Add support for suspend to disk" (de69ce9e) · Commits · e / devices / android_kernel_oneplus_sm8150

drivers/rtc/qpnp-rtc.c

+49 −1

Original line number	Diff line number	Diff line
		/* Copyright (c) 2012-2015, 2017-2018, The Linux Foundation. All rights reserved.
		/* Copyright (c) 2012-2015, 2017-2019, The Linux Foundation. All rights reserved.
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License version 2 and
		@@ -689,6 +689,53 @@ static void qpnp_rtc_shutdown(struct platform_device *pdev)
		}
		}

		static int qpnp_rtc_restore(struct device *dev)
		{
		int rc = 0;
		struct qpnp_rtc *rtc_dd = dev_get_drvdata(dev);

		dev_dbg(dev, "%s\n", __func__);

		if (rtc_dd->rtc_alarm_irq > 0) {
		/* Enable abort enable feature */
		rtc_dd->alarm_ctrl_reg1 \|= BIT_RTC_ABORT_ENABLE;
		rc = qpnp_write_wrapper(rtc_dd, &rtc_dd->alarm_ctrl_reg1,
		rtc_dd->alarm_base + REG_OFFSET_ALARM_CTRL1, 1);
		if (rc) {
		dev_err(dev, "SPMI write failed!\n");
		return rc;
		}

		/* Re-register for alarm Interrupt */
		rc = request_any_context_irq(rtc_dd->rtc_alarm_irq,
		qpnp_alarm_trigger, IRQF_TRIGGER_RISING,
		"qpnp_rtc_alarm", rtc_dd);
		if (rc)
		pr_err("Request IRQ failed (%d)\n", rc);
		else
		enable_irq_wake(rtc_dd->rtc_alarm_irq);
		}

		return rc;
		}

		static int qpnp_rtc_freeze(struct device *dev)
		{
		struct qpnp_rtc *rtc_dd = dev_get_drvdata(dev);

		dev_dbg(dev, "%s\n", __func__);

		if (rtc_dd->rtc_alarm_irq > 0)
		free_irq(rtc_dd->rtc_alarm_irq, rtc_dd);

		return 0;
		}

		static const struct dev_pm_ops qpnp_rtc_pm_ops = {
		.freeze = qpnp_rtc_freeze,
		.restore = qpnp_rtc_restore,
		};

		static const struct of_device_id spmi_match_table[] = {
		{
		.compatible = "qcom,qpnp-rtc",
		@@ -704,6 +751,7 @@ static struct platform_driver qpnp_rtc_driver = {
		.name = "qcom,qpnp-rtc",
		.owner = THIS_MODULE,
		.of_match_table = spmi_match_table,
		.pm = &qpnp_rtc_pm_ops,
		},
		};