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>

diff --git a/drivers/firmware/raspberrypi.c b/drivers/firmware/raspberrypi.c
index 3f070bd38a91511c986e3fb114b15bd4ac32634c..f261b64d1657c02290904d841e1f087c34e27ded 100644 (file)
--- a/drivers/firmware/raspberrypi.c
+++ b/drivers/firmware/raspberrypi.c
@@ -42,7 +42,7 @@ static void response_callback(struct mbox_client *cl, void *msg)
  * 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_firmware *fw, u32 chan, u32 data)
 
        return ret;
 }
+EXPORT_SYMBOL_GPL(rpi_firmware_transaction);
 
 /**
  * rpi_firmware_property_list - Submit firmware property list

diff --git a/include/soc/bcm2835/raspberrypi-firmware.h b/include/soc/bcm2835/raspberrypi-firmware.h
index e92278968b2b979db2a1f855f70e7aafb224fa98..09e3d871d110eb0762ebdb5ea329353738d58661 100644 (file)
--- a/include/soc/bcm2835/raspberrypi-firmware.h
+++ b/include/soc/bcm2835/raspberrypi-firmware.h
@@ -131,5 +131,6 @@ int rpi_firmware_property(struct rpi_firmware *fw,
 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__ */