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0470bb1b71
On some SOCs DBC is supported through the PSP mailbox instead of the platform mailbox. This capability is advertised in the PSP capabilities register. Allow using this communication path if supported. Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
48 lines
906 B
C
48 lines
906 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* AMD Platform Security Processor (PSP) Dynamic Boost Control support
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*
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* Copyright (C) 2023 Advanced Micro Devices, Inc.
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*
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* Author: Mario Limonciello <mario.limonciello@amd.com>
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*/
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#ifndef __DBC_H__
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#define __DBC_H__
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#include <uapi/linux/psp-dbc.h>
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#include <linux/device.h>
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#include <linux/miscdevice.h>
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#include <linux/psp-platform-access.h>
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#include "psp-dev.h"
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struct psp_dbc_device {
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struct device *dev;
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struct psp_device *psp;
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union dbc_buffer *mbox;
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struct mutex ioctl_mutex;
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struct miscdevice char_dev;
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/* used to abstract communication path */
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bool use_ext;
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u32 header_size;
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u32 *payload_size;
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u32 *result;
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void *payload;
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};
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union dbc_buffer {
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struct psp_request pa_req;
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struct psp_ext_request ext_req;
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};
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void dbc_dev_destroy(struct psp_device *psp);
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int dbc_dev_init(struct psp_device *psp);
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#endif /* __DBC_H */
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