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@@ -0,0 +1,85 @@
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+// SPDX-License-Identifier: GPL-2.0+
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+/*
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+ * Copyright 2019 Google, LLC
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+ * Written by Simon Glass <sjg@chromium.org>
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+ */
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+
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+#include <common.h>
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+#include <dm.h>
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+#include <irq.h>
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+#include <asm/io.h>
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+
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+/**
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+ * struct acpi_gpe_priv - private driver information
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+ *
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+ * @acpi_base: Base I/O address of ACPI registers
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+ */
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+struct acpi_gpe_priv {
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+ ulong acpi_base;
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+};
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+
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+#define GPE0_STS(x) (0x20 + ((x) * 4))
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+
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+static int acpi_gpe_read_and_clear(struct irq *irq)
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+{
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+ struct acpi_gpe_priv *priv = dev_get_priv(irq->dev);
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+ u32 mask, sts;
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+ ulong start;
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+ int ret = 0;
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+ int bank;
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+
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+ bank = irq->id / 32;
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+ mask = 1 << (irq->id % 32);
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+
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+ /* Wait up to 1ms for GPE status to clear */
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+ start = get_timer(0);
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+ do {
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+ if (get_timer(start) > 1)
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+ return ret;
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+
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+ sts = inl(priv->acpi_base + GPE0_STS(bank));
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+ if (sts & mask) {
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+ outl(mask, priv->acpi_base + GPE0_STS(bank));
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+ ret = 1;
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+ }
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+ } while (sts & mask);
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+
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+ return ret;
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+}
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+
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+static int acpi_gpe_ofdata_to_platdata(struct udevice *dev)
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+{
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+ struct acpi_gpe_priv *priv = dev_get_priv(dev);
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+
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+ priv->acpi_base = dev_read_addr(dev);
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+ if (!priv->acpi_base || priv->acpi_base == FDT_ADDR_T_NONE)
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+ return log_msg_ret("acpi_base", -EINVAL);
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+
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+ return 0;
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+}
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+
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+static int acpi_gpe_of_xlate(struct irq *irq, struct ofnode_phandle_args *args)
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+{
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+ irq->id = args->args[0];
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+
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+ return 0;
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+}
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+
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+static const struct irq_ops acpi_gpe_ops = {
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+ .read_and_clear = acpi_gpe_read_and_clear,
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+ .of_xlate = acpi_gpe_of_xlate,
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+};
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+
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+static const struct udevice_id acpi_gpe_ids[] = {
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+ { .compatible = "intel,acpi-gpe", .data = X86_IRQT_ACPI_GPE },
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+ { }
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+};
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+
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+U_BOOT_DRIVER(acpi_gpe_drv) = {
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+ .name = "acpi_gpe",
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+ .id = UCLASS_IRQ,
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+ .of_match = acpi_gpe_ids,
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+ .ops = &acpi_gpe_ops,
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+ .ofdata_to_platdata = acpi_gpe_ofdata_to_platdata,
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+ .priv_auto_alloc_size = sizeof(struct acpi_gpe_priv),
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+};
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