[PATCH net-next v4 6/7] net: dsa: lantiq_gswip: make DSA tag protocol model-specific

[Daniel Golle <daniel@makrotopia.org>]

While the older Lantiq / Intel which are currently supported all use
the DSA_TAG_GSWIP tagging protocol, newer MaxLinear GSW1xx modules use
another 8-byte tagging protocol. Move the tag protocol information to
struct gswip_hw_info to make it possible for new models to specify
a different tagging protocol.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
---
v4: no changes
v3: no changes
v2: no changes

 drivers/net/dsa/lantiq_gswip.c | 6 +++++-
 drivers/net/dsa/lantiq_gswip.h | 1 +
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/net/dsa/lantiq_gswip.c b/drivers/net/dsa/lantiq_gswip.c
index 1ce9ef425082..f8a43c351649 100644
--- a/drivers/net/dsa/lantiq_gswip.c
+++ b/drivers/net/dsa/lantiq_gswip.c
@@ -659,7 +659,9 @@ static enum dsa_tag_protocol gswip_get_tag_protocol(struct dsa_switch *ds,
 						    int port,
 						    enum dsa_tag_protocol mp)
 {
-	return DSA_TAG_PROTO_GSWIP;
+	struct gswip_priv *priv = ds->priv;
+
+	return priv->hw_info->tag_protocol;
 }
 
 static int gswip_vlan_active_create(struct gswip_priv *priv,
@@ -2003,6 +2005,7 @@ static const struct gswip_hw_info gswip_xrx200 = {
 	.phylink_get_caps = gswip_xrx200_phylink_get_caps,
 	.pce_microcode = &gswip_pce_microcode,
 	.pce_microcode_size = ARRAY_SIZE(gswip_pce_microcode),
+	.tag_protocol = DSA_TAG_PROTO_GSWIP,
 };
 
 static const struct gswip_hw_info gswip_xrx300 = {
@@ -2012,6 +2015,7 @@ static const struct gswip_hw_info gswip_xrx300 = {
 	.phylink_get_caps = gswip_xrx300_phylink_get_caps,
 	.pce_microcode = &gswip_pce_microcode,
 	.pce_microcode_size = ARRAY_SIZE(gswip_pce_microcode),
+	.tag_protocol = DSA_TAG_PROTO_GSWIP,
 };
 
 static const struct of_device_id gswip_of_match[] = {
diff --git a/drivers/net/dsa/lantiq_gswip.h b/drivers/net/dsa/lantiq_gswip.h
index 3c60f14673a7..0b7b6db4eab9 100644
--- a/drivers/net/dsa/lantiq_gswip.h
+++ b/drivers/net/dsa/lantiq_gswip.h
@@ -226,6 +226,7 @@ struct gswip_hw_info {
 	unsigned int mii_ports;
 	const struct gswip_pce_microcode (*pce_microcode)[];
 	size_t pce_microcode_size;
+	enum dsa_tag_protocol tag_protocol;
 	void (*phylink_get_caps)(struct dsa_switch *ds, int port,
 				 struct phylink_config *config);
 };
-- 
2.50.1