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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Texas Instruments System Control Interface (TI SCI) system reset driver
- *
- * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
- * Andreas Dannenberg <dannenberg@ti.com>
- */
- #include <common.h>
- #include <dm.h>
- #include <errno.h>
- #include <log.h>
- #include <sysreset.h>
- #include <dm/device_compat.h>
- #include <linux/err.h>
- #include <linux/soc/ti/ti_sci_protocol.h>
- /**
- * struct ti_sci_sysreset_data - sysreset controller information structure
- * @sci: TI SCI handle used for communication with system controller
- */
- struct ti_sci_sysreset_data {
- const struct ti_sci_handle *sci;
- };
- static int ti_sci_sysreset_probe(struct udevice *dev)
- {
- struct ti_sci_sysreset_data *data = dev_get_priv(dev);
- debug("%s(dev=%p)\n", __func__, dev);
- if (!data)
- return -ENOMEM;
- /* Store handle for communication with the system controller */
- data->sci = ti_sci_get_handle(dev);
- if (IS_ERR(data->sci))
- return PTR_ERR(data->sci);
- return 0;
- }
- static int ti_sci_sysreset_request(struct udevice *dev, enum sysreset_t type)
- {
- struct ti_sci_sysreset_data *data = dev_get_priv(dev);
- const struct ti_sci_handle *sci = data->sci;
- const struct ti_sci_core_ops *cops = &sci->ops.core_ops;
- int ret;
- debug("%s(dev=%p, type=%d)\n", __func__, dev, type);
- ret = cops->reboot_device(sci);
- if (ret)
- dev_err(dev, "%s: reboot_device failed (%d)\n", __func__, ret);
- return ret;
- }
- static struct sysreset_ops ti_sci_sysreset_ops = {
- .request = ti_sci_sysreset_request,
- };
- static const struct udevice_id ti_sci_sysreset_of_match[] = {
- { .compatible = "ti,sci-sysreset", },
- { /* sentinel */ },
- };
- U_BOOT_DRIVER(ti_sci_sysreset) = {
- .name = "ti-sci-sysreset",
- .id = UCLASS_SYSRESET,
- .of_match = ti_sci_sysreset_of_match,
- .probe = ti_sci_sysreset_probe,
- .priv_auto = sizeof(struct ti_sci_sysreset_data),
- .ops = &ti_sci_sysreset_ops,
- };
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