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Subject[PATCH v2] mailbox: pcc: Add PCC request and free channel declarations
Date
Exports pcc_mbox_request_channel() and pcc_mbox_free_channel()
declarations into a pcc.h header file.

v2
* Introduce pcc.h header file for pcc client methods

v1
* Initial

Signed-off-by: Hoan Tran <hotran@apm.com>
---
include/acpi/cppc_acpi.h | 7 +------
include/acpi/pcc.h | 29 +++++++++++++++++++++++++++++
2 files changed, 30 insertions(+), 6 deletions(-)
create mode 100644 include/acpi/pcc.h

diff --git a/include/acpi/cppc_acpi.h b/include/acpi/cppc_acpi.h
index 259683a..ab1da43 100644
--- a/include/acpi/cppc_acpi.h
+++ b/include/acpi/cppc_acpi.h
@@ -15,10 +15,9 @@
#define _CPPC_ACPI_H

#include <linux/acpi.h>
-#include <linux/mailbox_controller.h>
-#include <linux/mailbox_client.h>
#include <linux/types.h>

+#include <acpi/pcc.h>
#include <acpi/processor.h>

/* Only support CPPCv2 for now. */
@@ -131,8 +130,4 @@ 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 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*/
diff --git a/include/acpi/pcc.h b/include/acpi/pcc.h
new file mode 100644
index 0000000..17a940a
--- /dev/null
+++ b/include/acpi/pcc.h
@@ -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 */
--
1.9.1
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