media: allegro: add a version field to mcu messages

In order to distinguish the message format that is expected by the
firmware, add a version field to the message header. This allows to
encode and decode the messages for the version of the firmware that was
loaded by the driver.

Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/staging/media/allegro-dvt/allegro-mail.h b/drivers/staging/media/allegro-dvt/allegro-mail.h
index 397622973c19..c095dbfcf104 100644
--- a/drivers/staging/media/allegro-dvt/allegro-mail.h
+++ b/drivers/staging/media/allegro-dvt/allegro-mail.h
@@ -20,10 +20,15 @@ enum mcu_msg_type {
 	MCU_MSG_TYPE_PUSH_BUFFER_REFERENCE = 0x000f,
 };
 
+enum mcu_msg_version {
+	MCU_MSG_VERSION_2018_2,
+};
+
 const char *msg_type_name(enum mcu_msg_type type);
 
 struct mcu_msg_header {
 	enum mcu_msg_type type;
+	enum mcu_msg_version version;
 };
 
 struct mcu_msg_init_request {
@@ -40,6 +45,7 @@ struct mcu_msg_init_response {
 };
 
 struct create_channel_param {
+	enum mcu_msg_version version;
 	u16 width;
 	u16 height;
 	u32 format;