Merge "thermal: qcom-spmi-temp-alarm: correct IRQ triggering for GEN2 peripherals" (c48b690c) · Commits · e / devices / android_kernel_oneplus_sm8150

drivers/thermal/qcom-spmi-temp-alarm.c

+25 −2

Original line number	Diff line number	Diff line
		/*
		* Copyright (c) 2011-2015, 2017, The Linux Foundation. All rights reserved.
		* Copyright (c) 2011-2015, 2017-2018 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
		@@ -271,6 +271,7 @@ static int qpnp_tm_probe(struct platform_device *pdev)
		struct qpnp_tm_chip *chip;
		struct device_node *node;
		u8 type, subtype, dig_major;
		unsigned long int flags;
		u32 res;
		int ret, irq;

		@@ -350,8 +351,30 @@ static int qpnp_tm_probe(struct platform_device *pdev)
		goto fail;
		}

		if (subtype == QPNP_TM_SUBTYPE_GEN2) {
		/*
		* The interrupt signal on TEMP_GEN2 modules is low when the
		* over-temperature stage is 0 and high when the stage is
		* greater than 0. Therefore, triggering on both edges is
		* required in order to detect both stage 0 -> 1 and 1 -> 0
		* transitions.
		*
		* There is no mechanism to receive interrupts on other stage
		* transitions (e.g. 1 -> 2 or 2 -> 1).
		*/
		flags = IRQF_TRIGGER_RISING \| IRQF_TRIGGER_FALLING;
		} else {
		/*
		* The interrupt signal on older modules provides a short pulse
		* on every over-temperature stage transition (e.g. 0 -> 1,
		* 1 -> 0, 1 -> 2, 2 -> 1, etc). Therefore, triggering should
		* only be performed on the rising edge.
		*/
		flags = IRQF_TRIGGER_RISING;
		}

		ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, qpnp_tm_isr,
		IRQF_ONESHOT, node->name, chip);
		flags \| IRQF_ONESHOT, node->name, chip);
		if (ret < 0)
		goto fail;