[PATCH net-next v3 5/8] net: stmmac: use FIELD_GET() for version register

[Russell King (Oracle)]

Provide field definitions in common.h, and use these with FIELD_GET()
to extract the fields from the version register.

Reviewed-by: Andrew Lunn <andrew at lunn.ch>
Tested-by: Maxime Chevallier <maxime.chevallier at bootlin.com>
Tested-by: Mohd Ayaan Anwar <mohd.anwar at oss.qualcomm.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel at armlinux.org.uk>
---
 drivers/net/ethernet/stmicro/stmmac/common.h | 3 +++
 drivers/net/ethernet/stmicro/stmmac/hwif.c   | 8 ++++----
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
index 553a8897b005..27083af54568 100644
--- a/drivers/net/ethernet/stmicro/stmmac/common.h
+++ b/drivers/net/ethernet/stmicro/stmmac/common.h
@@ -26,6 +26,9 @@
 #include "hwif.h"
 #include "mmc.h"
 
+#define DWMAC_SNPSVER	GENMASK_U32(7, 0)
+#define DWMAC_USERVER	GENMASK_U32(15, 8)
+
 /* Synopsys Core versions */
 #define	DWMAC_CORE_3_40		0x34
 #define	DWMAC_CORE_3_50		0x35
diff --git a/drivers/net/ethernet/stmicro/stmmac/hwif.c b/drivers/net/ethernet/stmicro/stmmac/hwif.c
index a4df51a7aef1..26cc1bc758bf 100644
--- a/drivers/net/ethernet/stmicro/stmmac/hwif.c
+++ b/drivers/net/ethernet/stmicro/stmmac/hwif.c
@@ -43,12 +43,12 @@ static void stmmac_get_version(struct stmmac_priv *priv,
 	}
 
 	dev_info(priv->device, "User ID: 0x%x, Synopsys ID: 0x%x\n",
-		 (unsigned int)(version & GENMASK(15, 8)) >> 8,
-		 (unsigned int)(version & GENMASK(7, 0)));
+		 FIELD_GET(DWMAC_USERVER, version),
+		 FIELD_GET(DWMAC_SNPSVER, version));
 
-	ver->snpsver = version & GENMASK(7, 0);
+	ver->snpsver = FIELD_GET(DWMAC_SNPSVER, version);
 	if (core_type == DWMAC_CORE_XGMAC)
-		ver->dev_id = (version & GENMASK(15, 8)) >> 8;
+		ver->dev_id = FIELD_GET(DWMAC_USERVER, version);
 }
 
 static void stmmac_dwmac_mode_quirk(struct stmmac_priv *priv)
-- 
2.47.3