netdev - [PATCH v5 net-next 4/5] net: dsa: microchip: move REG_SW_MAC

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Date: Wed, 20 Sep 2023 13:43:42 +0200
From: Lukasz Majewski <lukma@...x.de>
To: Tristram.Ha@...rochip.com,
	Eric Dumazet <edumazet@...gle.com>,
	Andrew Lunn <andrew@...n.ch>,
	davem@...emloft.net,
	Woojung Huh <woojung.huh@...rochip.com>,
	Vladimir Oltean <olteanv@...il.com>,
	Oleksij Rempel <o.rempel@...gutronix.de>
Cc: Florian Fainelli <f.fainelli@...il.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	UNGLinuxDriver@...rochip.com,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Vladimir Oltean <vladimir.oltean@....com>,
	Lukasz Majewski <lukma@...x.de>
Subject: [PATCH v5 net-next 4/5] net: dsa: microchip: move REG_SW_MAC_ADDR to dev->info->regs[]

From: Vladimir Oltean <vladimir.oltean@....com>

Defining macros which have the same name but different values is bad
practice, because it makes it hard to avoid code duplication. The same
code does different things, depending on the file it's placed in.
Case in point, we want to access REG_SW_MAC_ADDR from ksz_common.c, but
currently we can't, because we don't know which kszXXXX_reg.h to include
from the common code.

Remove the REG_SW_MAC_ADDR_{0..5} macros from ksz8795_reg.h and
ksz9477_reg.h, and re-add this register offset to the dev->info->regs[]
array.

Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
Signed-off-by: Lukasz Majewski <lukma@...x.de>

---
Changes for v5:
- New patch
---
 drivers/net/dsa/microchip/ksz8795_reg.h | 7 -------
 drivers/net/dsa/microchip/ksz9477_reg.h | 7 -------
 drivers/net/dsa/microchip/ksz_common.c  | 2 ++
 drivers/net/dsa/microchip/ksz_common.h  | 1 +
 4 files changed, 3 insertions(+), 14 deletions(-)

diff --git a/drivers/net/dsa/microchip/ksz8795_reg.h b/drivers/net/dsa/microchip/ksz8795_reg.h
index 7a57c6088f80..ee1b673d5f30 100644
--- a/drivers/net/dsa/microchip/ksz8795_reg.h
+++ b/drivers/net/dsa/microchip/ksz8795_reg.h
@@ -323,13 +323,6 @@
 	((addr) + REG_PORT_1_CTRL_0 + (port) *	\
 		(REG_PORT_2_CTRL_0 - REG_PORT_1_CTRL_0))
 
-#define REG_SW_MAC_ADDR_0		0x68
-#define REG_SW_MAC_ADDR_1		0x69
-#define REG_SW_MAC_ADDR_2		0x6A
-#define REG_SW_MAC_ADDR_3		0x6B
-#define REG_SW_MAC_ADDR_4		0x6C
-#define REG_SW_MAC_ADDR_5		0x6D
-
 #define TABLE_EXT_SELECT_S		5
 #define TABLE_EEE_V			1
 #define TABLE_ACL_V			2
diff --git a/drivers/net/dsa/microchip/ksz9477_reg.h b/drivers/net/dsa/microchip/ksz9477_reg.h
index cba3dba58bc3..c8866c180fe5 100644
--- a/drivers/net/dsa/microchip/ksz9477_reg.h
+++ b/drivers/net/dsa/microchip/ksz9477_reg.h
@@ -166,13 +166,6 @@
 #define SW_DOUBLE_TAG			BIT(7)
 #define SW_RESET			BIT(1)
 
-#define REG_SW_MAC_ADDR_0		0x0302
-#define REG_SW_MAC_ADDR_1		0x0303
-#define REG_SW_MAC_ADDR_2		0x0304
-#define REG_SW_MAC_ADDR_3		0x0305
-#define REG_SW_MAC_ADDR_4		0x0306
-#define REG_SW_MAC_ADDR_5		0x0307
-
 #define REG_SW_MTU__2			0x0308
 #define REG_SW_MTU_MASK			GENMASK(13, 0)
 
diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index 42db7679c360..c67ad0f6e1fa 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -298,6 +298,7 @@ static const struct ksz_dev_ops lan937x_dev_ops = {
 };
 
 static const u16 ksz8795_regs[] = {
+	[REG_SW_MAC_ADDR]		= 0x68,
 	[REG_IND_CTRL_0]		= 0x6E,
 	[REG_IND_DATA_8]		= 0x70,
 	[REG_IND_DATA_CHECK]		= 0x72,
@@ -426,6 +427,7 @@ static u8 ksz8863_shifts[] = {
 };
 
 static const u16 ksz9477_regs[] = {
+	[REG_SW_MAC_ADDR]		= 0x0302,
 	[P_STP_CTRL]			= 0x0B04,
 	[S_START_CTRL]			= 0x0300,
 	[S_BROADCAST_CTRL]		= 0x0332,
diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h
index a4de58847dea..1f3fb6c23f36 100644
--- a/drivers/net/dsa/microchip/ksz_common.h
+++ b/drivers/net/dsa/microchip/ksz_common.h
@@ -211,6 +211,7 @@ enum ksz_chip_id {
 };
 
 enum ksz_regs {
+	REG_SW_MAC_ADDR,
 	REG_IND_CTRL_0,
 	REG_IND_DATA_8,
 	REG_IND_DATA_CHECK,
-- 
2.20.1