ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/drivers/power/reset/syscon-reboot-mode.c b/marvell/linux/drivers/power/reset/syscon-reboot-mode.c
new file mode 100644
index 0000000..e0772c9
--- /dev/null
+++ b/marvell/linux/drivers/power/reset/syscon-reboot-mode.c
@@ -0,0 +1,86 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2016, Fuzhou Rockchip Electronics Co., Ltd
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/reboot.h>
+#include <linux/regmap.h>
+#include <linux/mfd/syscon.h>
+#include <linux/reboot-mode.h>
+
+struct syscon_reboot_mode {
+ struct regmap *map;
+ struct reboot_mode_driver reboot;
+ u32 offset;
+ u32 mask;
+};
+
+static int syscon_reboot_mode_write(struct reboot_mode_driver *reboot,
+ unsigned int magic)
+{
+ struct syscon_reboot_mode *syscon_rbm;
+ int ret;
+
+ syscon_rbm = container_of(reboot, struct syscon_reboot_mode, reboot);
+
+ ret = regmap_update_bits(syscon_rbm->map, syscon_rbm->offset,
+ syscon_rbm->mask, magic);
+ if (ret < 0)
+ dev_err(reboot->dev, "update reboot mode bits failed\n");
+
+ return ret;
+}
+
+static int syscon_reboot_mode_probe(struct platform_device *pdev)
+{
+ int ret;
+ struct syscon_reboot_mode *syscon_rbm;
+
+ syscon_rbm = devm_kzalloc(&pdev->dev, sizeof(*syscon_rbm), GFP_KERNEL);
+ if (!syscon_rbm)
+ return -ENOMEM;
+
+ syscon_rbm->reboot.dev = &pdev->dev;
+ syscon_rbm->reboot.write = syscon_reboot_mode_write;
+ syscon_rbm->mask = 0xffffffff;
+
+ syscon_rbm->map = syscon_node_to_regmap(pdev->dev.parent->of_node);
+ if (IS_ERR(syscon_rbm->map))
+ return PTR_ERR(syscon_rbm->map);
+
+ if (of_property_read_u32(pdev->dev.of_node, "offset",
+ &syscon_rbm->offset))
+ return -EINVAL;
+
+ of_property_read_u32(pdev->dev.of_node, "mask", &syscon_rbm->mask);
+
+ ret = devm_reboot_mode_register(&pdev->dev, &syscon_rbm->reboot);
+ if (ret)
+ dev_err(&pdev->dev, "can't register reboot mode\n");
+
+ return ret;
+}
+
+static const struct of_device_id syscon_reboot_mode_of_match[] = {
+ { .compatible = "syscon-reboot-mode" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, syscon_reboot_mode_of_match);
+
+static struct platform_driver syscon_reboot_mode_driver = {
+ .probe = syscon_reboot_mode_probe,
+ .driver = {
+ .name = "syscon-reboot-mode",
+ .of_match_table = syscon_reboot_mode_of_match,
+ },
+};
+module_platform_driver(syscon_reboot_mode_driver);
+
+MODULE_AUTHOR("Andy Yan <andy.yan@rock-chips.com");
+MODULE_DESCRIPTION("SYSCON reboot mode driver");
+MODULE_LICENSE("GPL v2");