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@@ -0,0 +1,78 @@
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+/*
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+ * Copyright (C) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
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+ *
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+ * Derived from linux/drivers/power/reset/syscon-reboot.c:
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+ * Copyright (C) 2013, Applied Micro Circuits Corporation
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+ * Author: Feng Kan <fkan@apm.com>
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+ *
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+ * SPDX-License-Identifier: GPL-2.0+
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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 <errno.h>
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+#include <regmap.h>
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+#include <sysreset.h>
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+#include <syscon.h>
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+
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+DECLARE_GLOBAL_DATA_PTR;
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+
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+struct syscon_reboot_priv {
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+ struct regmap *regmap;
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+ unsigned int offset;
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+ unsigned int mask;
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+};
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+
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+static int syscon_reboot_request(struct udevice *dev, enum sysreset_t type)
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+{
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+ struct syscon_reboot_priv *priv = dev_get_priv(dev);
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+
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+ regmap_write(priv->regmap, priv->offset, priv->mask);
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+
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+ return -EINPROGRESS;
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+}
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+
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+static struct sysreset_ops syscon_reboot_ops = {
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+ .request = syscon_reboot_request,
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+};
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+
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+int syscon_reboot_probe(struct udevice *dev)
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+{
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+ struct udevice *syscon;
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+ struct syscon_reboot_priv *priv = dev_get_priv(dev);
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+ int err;
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+
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+ err = uclass_get_device_by_phandle(UCLASS_SYSCON, dev,
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+ "regmap", &syscon);
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+ if (err) {
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+ error("unable to find syscon device\n");
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+ return err;
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+ }
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+
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+ priv->regmap = syscon_get_regmap(syscon);
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+ if (!priv->regmap) {
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+ error("unable to find regmap\n");
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+ return -ENODEV;
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+ }
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+
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+ priv->offset = fdtdec_get_uint(gd->fdt_blob, dev_of_offset(dev),
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+ "offset", 0);
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+ priv->mask = fdtdec_get_uint(gd->fdt_blob, dev_of_offset(dev),
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+ "mask", 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 udevice_id syscon_reboot_ids[] = {
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+ { .compatible = "syscon-reboot" },
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+ { /* sentinel */ }
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+};
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+
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+U_BOOT_DRIVER(syscon_reboot) = {
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+ .name = "syscon_reboot",
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+ .id = UCLASS_SYSRESET,
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+ .of_match = syscon_reboot_ids,
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+ .probe = syscon_reboot_probe,
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+ .priv_auto_alloc_size = sizeof(struct syscon_reboot_priv),
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+ .ops = &syscon_reboot_ops,
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+};
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