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Current File : //proc/self/root/usr/src/linux-headers-5.4.0-1103-aws/include/acpi/pcc.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * PCC (Platform Communications Channel) methods
 */

#ifndef _PCC_H
#define _PCC_H

#include <linux/mailbox_controller.h>
#include <linux/mailbox_client.h>

#define MAX_PCC_SUBSPACES	256
#ifdef CONFIG_PCC
extern struct mbox_chan *pcc_mbox_request_channel(struct mbox_client *cl,
						  int subspace_id);
extern void pcc_mbox_free_channel(struct mbox_chan *chan);
#else
static inline struct mbox_chan *pcc_mbox_request_channel(struct mbox_client *cl,
							 int subspace_id)
{
	return ERR_PTR(-ENODEV);
}
static inline void pcc_mbox_free_channel(struct mbox_chan *chan) { }
#endif

#endif /* _PCC_H */