1 files changed, 96 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-virtio-test.c b/drivers/gpio/gpio-virtio-test.c
new file mode 100644
index 000000000000..5a6db64b39ad
--- /dev/null
+++ b/drivers/gpio/gpio-virtio-test.c
@@ -0,0 +1,96 @@
+#include <linux/gpio.h>
+#include <linux/interrupt.h>
+
+static struct completion completion;
+static irqreturn_t __maybe_unused TEST_irq_handler_empty(int irq, void *pw)
+{
+	pr_info("%s: %d: %d\n", __func__, __LINE__, irq);
+	complete(&completion);
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t __maybe_unused TEST_irq_handler_disable(int irq, void *pw)
+{
+	pr_info("%s: %d: %d\n", __func__, __LINE__, irq);
+	complete(&completion);
+	disable_irq(irq);
+	return IRQ_HANDLED;
+}
+
+static void __maybe_unused TEST_my_request_irq(int gpio, void *handler, int flag)
+{
+	int ret;
+
+	pr_info("%s: %d: %d\n", __func__, __LINE__, gpio);
+	ret = gpio_request_one(gpio, GPIOF_DIR_IN, "test");
+	if (ret) {
+		pr_err("failed to request IRQ GPIO: %d\n", ret);
+		return;
+	}
+
+	ret = request_irq(gpio_to_irq(gpio), handler, flag, __func__, NULL);
+	if (ret != 0)
+		pr_err("failed to request ...: %d\n", ret);
+}
+
+static void __maybe_unused TEST_my_request_irq_threaded(int gpio, void *handler, int flag)
+{
+	int ret;
+
+	pr_info("%s: %d: %d\n", __func__, __LINE__, gpio);
+	ret = gpio_request_one(gpio, GPIOF_DIR_IN, "test");
+	if (ret) {
+		pr_err("failed to request IRQ GPIO: %d\n", ret);
+		return;
+	}
+
+	ret = request_threaded_irq(gpio_to_irq(gpio), NULL, handler, flag, __func__, NULL);
+	if (ret != 0)
+		pr_err("failed to request ...: %d\n", ret);
+}
+
+struct test_configuration {
+	void (*register_irq)(int gpio, void *handler, int flag);
+	irqreturn_t (*handler)(int irq, void *pw);
+	unsigned int flags;
+};
+
+static struct test_configuration tests[] = {
+	{ TEST_my_request_irq, TEST_irq_handler_empty, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING },
+	{ TEST_my_request_irq, TEST_irq_handler_empty, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT},
+//	{ TEST_my_request_irq, TEST_irq_handler_disable, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING },
+//	{ TEST_my_request_irq, TEST_irq_handler_disable, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT},
+	{ TEST_my_request_irq_threaded, TEST_irq_handler_empty, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT},
+	{ TEST_my_request_irq_threaded, TEST_irq_handler_disable, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT},
+
+//	{ TEST_my_request_irq, TEST_irq_handler_empty, IRQF_TRIGGER_LOW },
+//	{ TEST_my_request_irq, TEST_irq_handler_empty, IRQF_TRIGGER_LOW | IRQF_ONESHOT},
+////	{ TEST_my_request_irq, TEST_irq_handler_disable, IRQF_TRIGGER_LOW },
+////	{ TEST_my_request_irq, TEST_irq_handler_disable, IRQF_TRIGGER_LOW | IRQF_ONESHOT},
+//	{ TEST_my_request_irq_threaded, TEST_irq_handler_empty, IRQF_TRIGGER_LOW | IRQF_ONESHOT},
+//	{ TEST_my_request_irq_threaded, TEST_irq_handler_disable, IRQF_TRIGGER_LOW | IRQF_ONESHOT},
+};
+
+static void test_gpio(int base)
+{
+	struct test_configuration *test;
+	int i;
+
+	init_completion(&completion);
+
+	for (i = 0; i < ARRAY_SIZE(tests); i++) {
+		test = tests + i;
+		test->register_irq(base + i, test->handler, test->flags);
+		wait_for_completion(&completion);
+		pr_info("\n\n\n");
+	}
+
+	for (i = 0; i < ARRAY_SIZE(tests); i++) {
+		test = tests + i;
+
+		if (test->handler == TEST_irq_handler_disable)
+			enable_irq(gpio_to_irq(base + i));
+	}
+
+	disable_irq(gpio_to_irq(base));
+}