58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
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* Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
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*/
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#include <linux/err.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/scmi_plh.h>
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#include <linux/scmi_protocol.h>
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static struct scmi_device *scmi_dev;
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static int scmi_plh_inited;
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struct scmi_device *get_plh_scmi_device(void)
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{
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if (!scmi_plh_inited)
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return ERR_PTR(-EPROBE_DEFER);
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if (!scmi_dev || !scmi_dev->handle)
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return ERR_PTR(-ENODEV);
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return scmi_dev;
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}
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EXPORT_SYMBOL(get_plh_scmi_device);
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static int scmi_plh_probe(struct scmi_device *sdev)
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{
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int ret = 0;
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scmi_dev = sdev;
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if (!sdev)
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ret = -ENODEV;
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scmi_plh_inited = 1;
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return ret;
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}
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static const struct scmi_device_id scmi_id_table[] = {
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{ .protocol_id = SCMI_PROTOCOL_PLH, .name = "scmi_protocol_plh" },
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{ }
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};
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MODULE_DEVICE_TABLE(scmi, scmi_id_table);
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static struct scmi_driver scmi_plh_drv = {
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.name = "scmi-plh-driver",
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.probe = scmi_plh_probe,
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.id_table = scmi_id_table,
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};
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module_scmi_driver(scmi_plh_drv);
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MODULE_SOFTDEP("pre: plh_vendor");
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MODULE_DESCRIPTION("ARM SCMI PLH driver");
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MODULE_LICENSE("GPL");
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