1 files changed, 112 insertions, 0 deletions
diff --git a/roms/u-boot/drivers/misc/irq_sandbox.c b/roms/u-boot/drivers/misc/irq_sandbox.c
new file mode 100644
index 000000000..1f7e62e66
--- /dev/null
+++ b/roms/u-boot/drivers/misc/irq_sandbox.c
@@ -0,0 +1,112 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Sandbox driver for interrupts
+ *
+ * Copyright 2019 Google LLC
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <irq.h>
+#include <acpi/acpi_device.h>
+#include <asm/test.h>
+
+/**
+ * struct sandbox_irq_priv - private data for this driver
+ *
+ * @count: Counts the number calls to the read_and_clear() method
+ * @pending: true if an interrupt is pending, else false
+ */
+struct sandbox_irq_priv {
+	int count;
+	bool pending;
+};
+
+static int sandbox_set_polarity(struct udevice *dev, uint irq, bool active_low)
+{
+	if (irq > 10)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int sandbox_route_pmc_gpio_gpe(struct udevice *dev, uint pmc_gpe_num)
+{
+	if (pmc_gpe_num > 10)
+		return -ENOENT;
+
+	return pmc_gpe_num + 1;
+}
+
+static int sandbox_snapshot_polarities(struct udevice *dev)
+{
+	return 0;
+}
+
+static int sandbox_restore_polarities(struct udevice *dev)
+{
+	return 0;
+}
+
+static int sandbox_irq_read_and_clear(struct irq *irq)
+{
+	struct sandbox_irq_priv *priv = dev_get_priv(irq->dev);
+
+	if (irq->id != SANDBOX_IRQN_PEND)
+		return -EINVAL;
+	priv->count++;
+	if (priv->pending) {
+		priv->pending = false;
+		return 1;
+	}
+
+	if (!(priv->count % 3))
+		priv->pending = true;
+
+	return 0;
+}
+
+static int sandbox_irq_of_xlate(struct irq *irq,
+				struct ofnode_phandle_args *args)
+{
+	irq->id = args->args[0];
+
+	return 0;
+}
+
+static __maybe_unused int sandbox_get_acpi(const struct irq *irq,
+					   struct acpi_irq *acpi_irq)
+{
+	acpi_irq->pin = irq->id;
+	acpi_irq->mode = ACPI_IRQ_LEVEL_TRIGGERED;
+	acpi_irq->polarity = ACPI_IRQ_ACTIVE_HIGH;
+	acpi_irq->shared = ACPI_IRQ_SHARED;
+	acpi_irq->wake = ACPI_IRQ_WAKE;
+
+	return 0;
+}
+
+static const struct irq_ops sandbox_irq_ops = {
+	.route_pmc_gpio_gpe	= sandbox_route_pmc_gpio_gpe,
+	.set_polarity		= sandbox_set_polarity,
+	.snapshot_polarities	= sandbox_snapshot_polarities,
+	.restore_polarities	= sandbox_restore_polarities,
+	.read_and_clear		= sandbox_irq_read_and_clear,
+	.of_xlate		= sandbox_irq_of_xlate,
+#if CONFIG_IS_ENABLED(ACPIGEN)
+	.get_acpi		= sandbox_get_acpi,
+#endif
+};
+
+static const struct udevice_id sandbox_irq_ids[] = {
+	{ .compatible = "sandbox,irq", SANDBOX_IRQT_BASE },
+	{ }
+};
+
+U_BOOT_DRIVER(sandbox_irq_drv) = {
+	.name		= "sandbox_irq",
+	.id		= UCLASS_IRQ,
+	.of_match	= sandbox_irq_ids,
+	.ops		= &sandbox_irq_ops,
+	.priv_auto	= sizeof(struct sandbox_irq_priv),
+};