1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * PCC (Platform Communications Channel) methods
 4 */
 5
 6#ifndef _PCC_H
 7#define _PCC_H
 8
 9#include <linux/mailbox_controller.h>
10#include <linux/mailbox_client.h>
11
 
 
 
 
 
 
 
 
 
12#define MAX_PCC_SUBSPACES	256
13#ifdef CONFIG_PCC
14extern struct mbox_chan *pcc_mbox_request_channel(struct mbox_client *cl,
15						  int subspace_id);
16extern void pcc_mbox_free_channel(struct mbox_chan *chan);
17#else
18static inline struct mbox_chan *pcc_mbox_request_channel(struct mbox_client *cl,
19							 int subspace_id)
20{
21	return ERR_PTR(-ENODEV);
22}
23static inline void pcc_mbox_free_channel(struct mbox_chan *chan) { }
24#endif
25
26#endif /* _PCC_H */

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * PCC (Platform Communications Channel) methods
 4 */
 5
 6#ifndef _PCC_H
 7#define _PCC_H
 8
 9#include <linux/mailbox_controller.h>
10#include <linux/mailbox_client.h>
11
12struct pcc_mbox_chan {
13	struct mbox_chan *mchan;
14	u64 shmem_base_addr;
15	u64 shmem_size;
16	u32 latency;
17	u32 max_access_rate;
18	u16 min_turnaround_time;
19};
20
21#define MAX_PCC_SUBSPACES	256
22#ifdef CONFIG_PCC
23extern struct pcc_mbox_chan *
24pcc_mbox_request_channel(struct mbox_client *cl, int subspace_id);
25extern void pcc_mbox_free_channel(struct pcc_mbox_chan *chan);
26#else
27static inline struct pcc_mbox_chan *
28pcc_mbox_request_channel(struct mbox_client *cl, int subspace_id)
29{
30	return ERR_PTR(-ENODEV);
31}
32static inline void pcc_mbox_free_channel(struct pcc_mbox_chan *chan) { }
33#endif
34
35#endif /* _PCC_H */