|  | /* | 
|  | * PCC (Platform Communications Channel) methods | 
|  | * | 
|  | * This program is free software; you can redistribute it and/or | 
|  | * modify it under the terms of the GNU General Public License | 
|  | * as published by the Free Software Foundation; version 2 | 
|  | * of the License. | 
|  | */ | 
|  |  | 
|  | #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 */ |