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mailbox: pcc: Add PCC request and free channel declarations

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Exports pcc_mbox_request_channel() and pcc_mbox_free_channel()
declarations into a pcc.h header file.

Looks-good-to: Prashanth Prakash <pprakash@codeaurora.org>
Signed-off-by: Hoan Tran <hotran@apm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Hoan Tran 2016-06-16 14:09:38 -07:00 committed by Rafael J. Wysocki
parent 2324d15447
commit 866ae696e2
2 changed files with 30 additions and 6 deletions
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7
include/acpi/cppc_acpi.h
View file

@ -15,10 +15,9 @@
#define _CPPC_ACPI_H #define _CPPC_ACPI_H
#include <linux/acpi.h> #include <linux/acpi.h>
#include <linux/mailbox_controller.h>
#include <linux/mailbox_client.h>
#include <linux/types.h> #include <linux/types.h>
#include <acpi/pcc.h>
#include <acpi/processor.h> #include <acpi/processor.h>
/* Only support CPPCv2 for now. */ /* Only support CPPCv2 for now. */
@ -130,8 +129,4 @@ extern int cppc_set_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls);
extern int cppc_get_perf_caps(int cpu, struct cppc_perf_caps *caps); extern int cppc_get_perf_caps(int cpu, struct cppc_perf_caps *caps);
extern int acpi_get_psd_map(struct cpudata **); extern int acpi_get_psd_map(struct cpudata **);
/* Methods to interact with the PCC mailbox controller. */
extern struct mbox_chan *
pcc_mbox_request_channel(struct mbox_client *, unsigned int);
#endif /* _CPPC_ACPI_H*/ #endif /* _CPPC_ACPI_H*/

29
include/acpi/pcc.h Normal file
View file

@ -0,0 +1,29 @@
/*
* 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>
#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 NULL;
}
static inline void pcc_mbox_free_channel(struct mbox_chan *chan) { }
#endif
#endif /* _PCC_H */