From 34454ca8cf9b63b0973fb23271810461a45a9884 Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Wed, 14 Sep 2016 09:16:19 +0100
Subject: [PATCH] raspberrypi-firmware: Export the general transaction
 function.

The vc4-firmware-kms module is going to be doing the MBOX FB call.

Signed-off-by: Eric Anholt <eric@anholt.net>
---
 drivers/firmware/raspberrypi.c             | 3 ++-
 include/soc/bcm2835/raspberrypi-firmware.h | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/firmware/raspberrypi.c
+++ b/drivers/firmware/raspberrypi.c
@@ -42,7 +42,7 @@ static void response_callback(struct mbo
  * Sends a request to the firmware through the BCM2835 mailbox driver,
  * and synchronously waits for the reply.
  */
-static int
+int
 rpi_firmware_transaction(struct rpi_firmware *fw, u32 chan, u32 data)
 {
 	u32 message = MBOX_MSG(chan, data);
@@ -63,6 +63,7 @@ rpi_firmware_transaction(struct rpi_firm
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(rpi_firmware_transaction);
 
 /**
  * rpi_firmware_property_list - Submit firmware property list
--- a/include/soc/bcm2835/raspberrypi-firmware.h
+++ b/include/soc/bcm2835/raspberrypi-firmware.h
@@ -131,5 +131,6 @@ int rpi_firmware_property(struct rpi_fir
 int rpi_firmware_property_list(struct rpi_firmware *fw,
 			       void *data, size_t tag_size);
 struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node);
+int rpi_firmware_transaction(struct rpi_firmware *fw, u32 chan, u32 data);
 
 #endif /* __SOC_RASPBERRY_FIRMWARE_H__ */
