mirror of
https://github.com/brain-hackers/u-boot-brain
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65e25bea59
In the spirit of using the same base name for all of these related macros, rename this to have the operation at the end. This is not widely used so the impact is fairly small. Signed-off-by: Simon Glass <sjg@chromium.org>
121 lines
2.7 KiB
C
121 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2020 Linaro Limited.
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*/
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#include <common.h>
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#include <dm.h>
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#include <dm/device_compat.h>
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#include <errno.h>
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#include <scmi_agent-uclass.h>
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#include <scmi_protocols.h>
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#include <dm/device-internal.h>
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#include <linux/compat.h>
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/**
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* struct error_code - Helper structure for SCMI error code conversion
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* @scmi: SCMI error code
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* @errno: Related standard error number
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*/
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struct error_code {
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int scmi;
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int errno;
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};
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static const struct error_code scmi_linux_errmap[] = {
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{ .scmi = SCMI_NOT_SUPPORTED, .errno = -EOPNOTSUPP, },
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{ .scmi = SCMI_INVALID_PARAMETERS, .errno = -EINVAL, },
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{ .scmi = SCMI_DENIED, .errno = -EACCES, },
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{ .scmi = SCMI_NOT_FOUND, .errno = -ENOENT, },
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{ .scmi = SCMI_OUT_OF_RANGE, .errno = -ERANGE, },
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{ .scmi = SCMI_BUSY, .errno = -EBUSY, },
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{ .scmi = SCMI_COMMS_ERROR, .errno = -ECOMM, },
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{ .scmi = SCMI_GENERIC_ERROR, .errno = -EIO, },
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{ .scmi = SCMI_HARDWARE_ERROR, .errno = -EREMOTEIO, },
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{ .scmi = SCMI_PROTOCOL_ERROR, .errno = -EPROTO, },
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};
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int scmi_to_linux_errno(s32 scmi_code)
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{
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int n;
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if (!scmi_code)
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return 0;
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for (n = 0; n < ARRAY_SIZE(scmi_linux_errmap); n++)
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if (scmi_code == scmi_linux_errmap[n].scmi)
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return scmi_linux_errmap[1].errno;
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return -EPROTO;
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}
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/*
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* SCMI agent devices binds devices of various uclasses depeding on
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* the FDT description. scmi_bind_protocol() is a generic bind sequence
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* called by the uclass at bind stage, that is uclass post_bind.
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*/
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static int scmi_bind_protocols(struct udevice *dev)
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{
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int ret = 0;
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ofnode node;
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dev_for_each_subnode(node, dev) {
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struct driver *drv = NULL;
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u32 protocol_id;
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if (!ofnode_is_available(node))
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continue;
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if (ofnode_read_u32(node, "reg", &protocol_id))
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continue;
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switch (protocol_id) {
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case SCMI_PROTOCOL_ID_CLOCK:
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if (IS_ENABLED(CONFIG_CLK_SCMI))
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drv = DM_DRIVER_GET(scmi_clock);
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break;
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case SCMI_PROTOCOL_ID_RESET_DOMAIN:
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if (IS_ENABLED(CONFIG_RESET_SCMI))
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drv = DM_DRIVER_GET(scmi_reset_domain);
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break;
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default:
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break;
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}
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if (!drv) {
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dev_dbg(dev, "Ignore unsupported SCMI protocol %#x\n",
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protocol_id);
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continue;
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}
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ret = device_bind(dev, drv, ofnode_get_name(node), NULL, node,
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NULL);
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if (ret)
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break;
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}
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return ret;
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}
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static const struct scmi_agent_ops *transport_dev_ops(struct udevice *dev)
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{
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return (const struct scmi_agent_ops *)dev->driver->ops;
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}
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int devm_scmi_process_msg(struct udevice *dev, struct scmi_msg *msg)
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{
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const struct scmi_agent_ops *ops = transport_dev_ops(dev);
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if (ops->process_msg)
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return ops->process_msg(dev, msg);
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return -EPROTONOSUPPORT;
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}
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UCLASS_DRIVER(scmi_agent) = {
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.id = UCLASS_SCMI_AGENT,
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.name = "scmi_agent",
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.post_bind = scmi_bind_protocols,
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};
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