1 files changed, 195 insertions, 0 deletions
diff --git a/roms/u-boot/drivers/misc/irq-uclass.c b/roms/u-boot/drivers/misc/irq-uclass.c
new file mode 100644
index 000000000..3aa26f61d
--- /dev/null
+++ b/roms/u-boot/drivers/misc/irq-uclass.c
@@ -0,0 +1,195 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2019 Google, LLC
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#define LOG_CATEGORY UCLASS_IRQ
+
+#include <common.h>
+#include <dm.h>
+#include <dt-structs.h>
+#include <irq.h>
+#include <log.h>
+#include <dm/device-internal.h>
+
+int irq_route_pmc_gpio_gpe(struct udevice *dev, uint pmc_gpe_num)
+{
+	const struct irq_ops *ops = irq_get_ops(dev);
+
+	if (!ops->route_pmc_gpio_gpe)
+		return -ENOSYS;
+
+	return ops->route_pmc_gpio_gpe(dev, pmc_gpe_num);
+}
+
+int irq_set_polarity(struct udevice *dev, uint irq, bool active_low)
+{
+	const struct irq_ops *ops = irq_get_ops(dev);
+
+	if (!ops->set_polarity)
+		return -ENOSYS;
+
+	return ops->set_polarity(dev, irq, active_low);
+}
+
+int irq_snapshot_polarities(struct udevice *dev)
+{
+	const struct irq_ops *ops = irq_get_ops(dev);
+
+	if (!ops->snapshot_polarities)
+		return -ENOSYS;
+
+	return ops->snapshot_polarities(dev);
+}
+
+int irq_restore_polarities(struct udevice *dev)
+{
+	const struct irq_ops *ops = irq_get_ops(dev);
+
+	if (!ops->restore_polarities)
+		return -ENOSYS;
+
+	return ops->restore_polarities(dev);
+}
+
+int irq_read_and_clear(struct irq *irq)
+{
+	const struct irq_ops *ops = irq_get_ops(irq->dev);
+
+	if (!ops->read_and_clear)
+		return -ENOSYS;
+
+	return ops->read_and_clear(irq);
+}
+
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+int irq_get_by_driver_info(struct udevice *dev,
+			   struct phandle_1_arg *cells, struct irq *irq)
+{
+	int ret;
+
+	ret = device_get_by_ofplat_idx(cells->idx, &irq->dev);
+	if (ret)
+		return ret;
+	irq->id = cells->arg[0];
+
+	return 0;
+}
+#else
+static int irq_of_xlate_default(struct irq *irq,
+				struct ofnode_phandle_args *args)
+{
+	log_debug("(irq=%p)\n", irq);
+
+	if (args->args_count > 1) {
+		log_debug("Invaild args_count: %d\n", args->args_count);
+		return -EINVAL;
+	}
+
+	if (args->args_count)
+		irq->id = args->args[0];
+	else
+		irq->id = 0;
+
+	return 0;
+}
+
+static int irq_get_by_index_tail(int ret, ofnode node,
+				 struct ofnode_phandle_args *args,
+				 const char *list_name, int index,
+				 struct irq *irq)
+{
+	struct udevice *dev_irq;
+	const struct irq_ops *ops;
+
+	assert(irq);
+	irq->dev = NULL;
+	if (ret)
+		goto err;
+
+	ret = uclass_get_device_by_ofnode(UCLASS_IRQ, args->node, &dev_irq);
+	if (ret) {
+		log_debug("uclass_get_device_by_ofnode failed: err=%d\n", ret);
+		return ret;
+	}
+
+	irq->dev = dev_irq;
+
+	ops = irq_get_ops(dev_irq);
+
+	if (ops->of_xlate)
+		ret = ops->of_xlate(irq, args);
+	else
+		ret = irq_of_xlate_default(irq, args);
+	if (ret) {
+		log_debug("of_xlate() failed: %d\n", ret);
+		return ret;
+	}
+
+	return irq_request(dev_irq, irq);
+err:
+	log_debug("Node '%s', property '%s', failed to request IRQ index %d: %d\n",
+		  ofnode_get_name(node), list_name, index, ret);
+	return ret;
+}
+
+int irq_get_by_index(struct udevice *dev, int index, struct irq *irq)
+{
+	struct ofnode_phandle_args args;
+	int ret;
+
+	ret = dev_read_phandle_with_args(dev, "interrupts-extended",
+					 "#interrupt-cells", 0, index, &args);
+
+	return irq_get_by_index_tail(ret, dev_ofnode(dev), &args,
+				     "interrupts-extended", index > 0, irq);
+}
+#endif /* OF_PLATDATA */
+
+int irq_request(struct udevice *dev, struct irq *irq)
+{
+	const struct irq_ops *ops;
+
+	log_debug("(dev=%p, irq=%p)\n", dev, irq);
+	ops = irq_get_ops(dev);
+
+	irq->dev = dev;
+
+	if (!ops->request)
+		return 0;
+
+	return ops->request(irq);
+}
+
+int irq_first_device_type(enum irq_dev_t type, struct udevice **devp)
+{
+	int ret;
+
+	ret = uclass_first_device_drvdata(UCLASS_IRQ, type, devp);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+#if CONFIG_IS_ENABLED(ACPIGEN)
+int irq_get_acpi(const struct irq *irq, struct acpi_irq *acpi_irq)
+{
+	struct irq_ops *ops;
+
+	if (!irq_is_valid(irq))
+		return -EINVAL;
+
+	ops = irq_get_ops(irq->dev);
+	if (!ops->get_acpi)
+		return -ENOSYS;
+
+	return ops->get_acpi(irq, acpi_irq);
+}
+#endif
+
+UCLASS_DRIVER(irq) = {
+	.id		= UCLASS_IRQ,
+	.name		= "irq",
+};