X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=drivers%2Fgpio%2Fgpiolib-acpi.c;h=a7d2358736fe761bfdd08bc30f9c8b611f80fdb2;hb=3a1e24fa70a06ab6b087361ffe90d4cb5e1d059d;hp=1f2ade475b36cb2e92eb2a2d7ea354fe57b059b8;hpb=056a81549c2722f0e7a9cceb7a98728eb1d67434;p=platform%2Fkernel%2Flinux-starfive.git

diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index 1f2ade4..a7d2358 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -32,9 +32,16 @@ MODULE_PARM_DESC(ignore_wake,
 		 "controller@pin combos on which to ignore the ACPI wake flag "
 		 "ignore_wake=controller@pin[,controller@pin[,...]]");
 
+static char *ignore_interrupt;
+module_param(ignore_interrupt, charp, 0444);
+MODULE_PARM_DESC(ignore_interrupt,
+		 "controller@pin combos on which to ignore interrupt "
+		 "ignore_interrupt=controller@pin[,controller@pin[,...]]");
+
 struct acpi_gpiolib_dmi_quirk {
 	bool no_edge_events_on_boot;
 	char *ignore_wake;
+	char *ignore_interrupt;
 };
 
 /**
@@ -317,14 +324,15 @@ static struct gpio_desc *acpi_request_own_gpiod(struct gpio_chip *chip,
 	return desc;
 }
 
-static bool acpi_gpio_in_ignore_list(const char *controller_in, unsigned int pin_in)
+static bool acpi_gpio_in_ignore_list(const char *ignore_list, const char *controller_in,
+				     unsigned int pin_in)
 {
 	const char *controller, *pin_str;
 	unsigned int pin;
 	char *endp;
 	int len;
 
-	controller = ignore_wake;
+	controller = ignore_list;
 	while (controller) {
 		pin_str = strchr(controller, '@');
 		if (!pin_str)
@@ -348,7 +356,7 @@ static bool acpi_gpio_in_ignore_list(const char *controller_in, unsigned int pin
 
 	return false;
 err:
-	pr_err_once("Error: Invalid value for gpiolib_acpi.ignore_wake: %s\n", ignore_wake);
+	pr_err_once("Error: Invalid value for gpiolib_acpi.ignore_...: %s\n", ignore_list);
 	return false;
 }
 
@@ -360,7 +368,7 @@ static bool acpi_gpio_irq_is_wake(struct device *parent,
 	if (agpio->wake_capable != ACPI_WAKE_CAPABLE)
 		return false;
 
-	if (acpi_gpio_in_ignore_list(dev_name(parent), pin)) {
+	if (acpi_gpio_in_ignore_list(ignore_wake, dev_name(parent), pin)) {
 		dev_info(parent, "Ignoring wakeup on pin %u\n", pin);
 		return false;
 	}
@@ -427,6 +435,11 @@ static acpi_status acpi_gpiochip_alloc_event(struct acpi_resource *ares,
 		goto fail_unlock_irq;
 	}
 
+	if (acpi_gpio_in_ignore_list(ignore_interrupt, dev_name(chip->parent), pin)) {
+		dev_info(chip->parent, "Ignoring interrupt on pin %u\n", pin);
+		return AE_OK;
+	}
+
 	event = kzalloc(sizeof(*event), GFP_KERNEL);
 	if (!event)
 		goto fail_unlock_irq;
@@ -1572,6 +1585,20 @@ static const struct dmi_system_id gpiolib_acpi_quirks[] __initconst = {
 			.ignore_wake = "INT33FF:01@0",
 		},
 	},
+	{
+		/*
+		 * Interrupt storm caused from edge triggered floating pin
+		 * Found in BIOS UX325UAZ.300
+		 * https://bugzilla.kernel.org/show_bug.cgi?id=216208
+		 */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "ZenBook UX325UAZ_UM325UAZ"),
+		},
+		.driver_data = &(struct acpi_gpiolib_dmi_quirk) {
+			.ignore_interrupt = "AMDI0030:00@18",
+		},
+	},
 	{} /* Terminating entry */
 };
 
@@ -1594,6 +1621,9 @@ static int __init acpi_gpio_setup_params(void)
 	if (ignore_wake == NULL && quirk && quirk->ignore_wake)
 		ignore_wake = quirk->ignore_wake;
 
+	if (ignore_interrupt == NULL && quirk && quirk->ignore_interrupt)
+		ignore_interrupt = quirk->ignore_interrupt;
+
 	return 0;
 }