linux-kernel - [PATCH v2 3/5] firmware: tegra: Expose tegra_bpmp_mrq

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Date:   Mon, 24 Jul 2017 19:29:16 +0300
From:   Mikko Perttunen <mperttunen@...dia.com>
To:     rui.zhang@...el.com, edubezval@...il.com, thierry.reding@...il.com,
        jonathanh@...dia.com
Cc:     linux-pm@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Mikko Perttunen <mperttunen@...dia.com>
Subject: [PATCH v2 3/5] firmware: tegra: Expose tegra_bpmp_mrq_return

Expose and export the tegra_bpmp_mrq_return function for use of drivers
outside the core BPMP driver. This function is used to reply to
messages originating from the BPMP, which is required in the thermal
driver.

Signed-off-by: Mikko Perttunen <mperttunen@...dia.com>
---
 drivers/firmware/tegra/bpmp.c | 5 +++--
 include/soc/tegra/bpmp.h      | 2 ++
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/firmware/tegra/bpmp.c b/drivers/firmware/tegra/bpmp.c
index b25179517cc5..53996a33a863 100644
--- a/drivers/firmware/tegra/bpmp.c
+++ b/drivers/firmware/tegra/bpmp.c
@@ -387,8 +387,8 @@ static struct tegra_bpmp_mrq *tegra_bpmp_find_mrq(struct tegra_bpmp *bpmp,
 	return NULL;
 }
 
-static void tegra_bpmp_mrq_return(struct tegra_bpmp_channel *channel,
-				  int code, const void *data, size_t size)
+void tegra_bpmp_mrq_return(struct tegra_bpmp_channel *channel, int code,
+			   const void *data, size_t size)
 {
 	unsigned long flags = channel->ib->flags;
 	struct tegra_bpmp *bpmp = channel->bpmp;
@@ -426,6 +426,7 @@ static void tegra_bpmp_mrq_return(struct tegra_bpmp_channel *channel,
 		mbox_client_txdone(bpmp->mbox.channel, 0);
 	}
 }
+EXPORT_SYMBOL_GPL(tegra_bpmp_mrq_return);
 
 static void tegra_bpmp_handle_mrq(struct tegra_bpmp *bpmp,
 				  unsigned int mrq,
diff --git a/include/soc/tegra/bpmp.h b/include/soc/tegra/bpmp.h
index 9ba65222bd3f..16d36dfe9fcd 100644
--- a/include/soc/tegra/bpmp.h
+++ b/include/soc/tegra/bpmp.h
@@ -117,6 +117,8 @@ int tegra_bpmp_transfer_atomic(struct tegra_bpmp *bpmp,
 			       struct tegra_bpmp_message *msg);
 int tegra_bpmp_transfer(struct tegra_bpmp *bpmp,
 			struct tegra_bpmp_message *msg);
+void tegra_bpmp_mrq_return(struct tegra_bpmp_channel *channel, int code,
+			   const void *data, size_t size);
 
 int tegra_bpmp_request_mrq(struct tegra_bpmp *bpmp, unsigned int mrq,
 			   tegra_bpmp_mrq_handler_t handler, void *data);
-- 
2.13.3