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 14 extern struct mbox_chan *pcc_mbox_request_channel(struct mbox_client *cl, 15 int subspace_id); 16 extern void pcc_mbox_free_channel(struct mbox_chan *chan); 17 #else 18 static inline struct mbox_chan *pcc_mbox_request_channel(struct mbox_client *cl, 19 int subspace_id) 20 { 21 return ERR_PTR(-ENODEV); 22 } 23 static inline void pcc_mbox_free_channel(struct mbox_chan *chan) { } 24 #endif 25 26 #endif /* _PCC_H */ 27