1 // SPDX-License-Identifier: GPL-2.0
10 #include <linux/device.h>
11 #include <linux/reset-controller.h>
15  * struct scmi_reset_data - reset controller information structure
17  * @handle: ARM SCMI handle used for communication with system controller
21 	const struct scmi_handle *handle;  member
25 #define to_scmi_handle(p)	(to_scmi_reset_data(p)->handle)
28  * scmi_reset_assert() - assert device reset
32  * This function implements the reset driver op to assert a device's reset
40 	const struct scmi_handle *handle = to_scmi_handle(rcdev);  in scmi_reset_assert()  local
42 	return handle->reset_ops->assert(handle, id);  in scmi_reset_assert()
46  * scmi_reset_deassert() - deassert device reset
50  * This function implements the reset driver op to deassert a device's reset
58 	const struct scmi_handle *handle = to_scmi_handle(rcdev);  in scmi_reset_deassert()  local
60 	return handle->reset_ops->deassert(handle, id);  in scmi_reset_deassert()
64  * scmi_reset_reset() - reset the device
68  * This function implements the reset driver op to trigger a device's
76 	const struct scmi_handle *handle = to_scmi_handle(rcdev);  in scmi_reset_reset()  local
78 	return handle->reset_ops->reset(handle, id);  in scmi_reset_reset()
90 	struct device *dev = &sdev->dev;  in scmi_reset_probe()
91 	struct device_node *np = dev->of_node;  in scmi_reset_probe()
92 	const struct scmi_handle *handle = sdev->handle;  in scmi_reset_probe()  local
94 	if (!handle || !handle->reset_ops)  in scmi_reset_probe()
95 		return -ENODEV;  in scmi_reset_probe()
99 		return -ENOMEM;  in scmi_reset_probe()
101 	data->rcdev.ops = &scmi_reset_ops;  in scmi_reset_probe()
102 	data->rcdev.owner = THIS_MODULE;  in scmi_reset_probe()
103 	data->rcdev.of_node = np;  in scmi_reset_probe()
104 	data->rcdev.nr_resets = handle->reset_ops->num_domains_get(handle);  in scmi_reset_probe()
105 	data->handle = handle;  in scmi_reset_probe()
107 	return devm_reset_controller_register(dev, &data->rcdev);  in scmi_reset_probe()
117 	.name = "scmi-reset",