linux-imx
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static int scmi_base_implementation_list_get(const struct scmi_handle *handle,// SPDX-License-Identifier: GPL-2.0/* * System Control and Management Interface (SCMI) Base Protocol * * Copyright (C) 2018 ARM Ltd. */enum scmi_base_protocol_cmd { BASE_DISCOVER_VENDOR = 0x3, BASE_DISCOVER_SUB_VENDOR = 0x4, BASE_DISCOVER_IMPLEMENT_VERSION = 0x5, BASE_DISCOVER_LIST_PROTOCOLS = 0x6, BASE_DISCOVER_AGENT = 0x7, BASE_NOTIFY_ERRORS = 0x8,};struct scmi_msg_resp_base_attributes { u8 num_protocols; u8 num_agents; __le16 reserved;};/** * scmi_base_attributes_get() - gets the implementation details * that are associated with the base protocol. * * @handle: SCMI entity handle * * Return: 0 on success, else appropriate SCMI error. */static int scmi_base_attributes_get(const struct scmi_handle *handle){ int ret; struct scmi_xfer *t; struct scmi_msg_resp_base_attributes *attr_info; struct scmi_revision_info *rev = handle->version; ret = scmi_xfer_get_init(handle, PROTOCOL_ATTRIBUTES, SCMI_PROTOCOL_BASE, 0, sizeof(*attr_info), &t); if (ret) return ret; ret = scmi_do_xfer(handle, t); if (!ret) { attr_info = t->rx.buf; rev->num_protocols = attr_info->num_protocols; rev->num_agents = attr_info->num_agents; } scmi_xfer_put(handle, t); return ret;}/** * scmi_base_vendor_id_get() - gets vendor/subvendor identifier ASCII string. * * @handle: SCMI entity handle * @sub_vendor: specify true if sub-vendor ID is needed * * Return: 0 on success, else appropriate SCMI error. */static intscmi_base_vendor_id_get(const struct scmi_handle *handle, bool sub_vendor){ u8 cmd; int ret, size; char *vendor_id; struct scmi_xfer *t; struct scmi_revision_info *rev = handle->version; if (sub_vendor) { cmd = BASE_DISCOVER_SUB_VENDOR; vendor_id = rev->sub_vendor_id; size = ARRAY_SIZE(rev->sub_vendor_id); } else { cmd = BASE_DISCOVER_VENDOR; vendor_id = rev->vendor_id; size = ARRAY_SIZE(rev->vendor_id); } ret = scmi_xfer_get_init(handle, cmd, SCMI_PROTOCOL_BASE, 0, size, &t); if (ret) return ret; ret = scmi_do_xfer(handle, t); if (!ret) memcpy(vendor_id, t->rx.buf, size); scmi_xfer_put(handle, t);