netdev - [PATCH v3 2/3] net: dsa: mv88e632x: Refactor serdes write

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Date: Tue, 18 Jul 2023 08:59:30 +0200
From: "M. Haener" <michael.haener@...mens.com>
To: netdev@...r.kernel.org
Cc: Michael Haener <michael.haener@...mens.com>,
	linux-kernel@...r.kernel.org,
	Andrew Lunn <andrew@...n.ch>,
	Florian Fainelli <f.fainelli@...il.com>,
	Vladimir Oltean <olteanv@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Russell King <linux@...linux.org.uk>,
	Alexander Sverdlin <alexander.sverdlin@...mens.com>
Subject: [PATCH v3 2/3] net: dsa: mv88e632x: Refactor serdes write

From: Michael Haener <michael.haener@...mens.com>

To avoid code duplication, the serdes write functions
have been combined.

Signed-off-by: Michael Haener <michael.haener@...mens.com>
---
Changelog:
v3: rebased onto main branch
v2: rebased onto Russell Kings series dsa/88e6xxx/phylink

 drivers/net/dsa/mv88e6xxx/chip.c   |  4 ++++
 drivers/net/dsa/mv88e6xxx/chip.h   |  2 ++
 drivers/net/dsa/mv88e6xxx/serdes.c |  6 +++---
 drivers/net/dsa/mv88e6xxx/serdes.h | 11 +++++++++++
 4 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 81fa66568e25..7e8aaa1383c6 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -4379,6 +4379,7 @@ static const struct mv88e6xxx_ops mv88e6172_ops = {
 	.stu_getnext = mv88e6352_g1_stu_getnext,
 	.stu_loadpurge = mv88e6352_g1_stu_loadpurge,
 	.serdes_read = mv88e6352_serdes_read,
+	.serdes_write = mv88e6352_serdes_write,
 	.serdes_get_regs_len = mv88e6352_serdes_get_regs_len,
 	.serdes_get_regs = mv88e6352_serdes_get_regs,
 	.gpio_ops = &mv88e6352_gpio_ops,
@@ -4480,6 +4481,7 @@ static const struct mv88e6xxx_ops mv88e6176_ops = {
 	.stu_getnext = mv88e6352_g1_stu_getnext,
 	.stu_loadpurge = mv88e6352_g1_stu_loadpurge,
 	.serdes_read = mv88e6352_serdes_read,
+	.serdes_write = mv88e6352_serdes_write,
 	.serdes_irq_mapping = mv88e6352_serdes_irq_mapping,
 	.serdes_get_regs_len = mv88e6352_serdes_get_regs_len,
 	.serdes_get_regs = mv88e6352_serdes_get_regs,
@@ -4751,6 +4753,7 @@ static const struct mv88e6xxx_ops mv88e6240_ops = {
 	.stu_getnext = mv88e6352_g1_stu_getnext,
 	.stu_loadpurge = mv88e6352_g1_stu_loadpurge,
 	.serdes_read = mv88e6352_serdes_read,
+	.serdes_write = mv88e6352_serdes_write,
 	.serdes_irq_mapping = mv88e6352_serdes_irq_mapping,
 	.serdes_get_regs_len = mv88e6352_serdes_get_regs_len,
 	.serdes_get_regs = mv88e6352_serdes_get_regs,
@@ -5164,6 +5167,7 @@ static const struct mv88e6xxx_ops mv88e6352_ops = {
 	.stu_getnext = mv88e6352_g1_stu_getnext,
 	.stu_loadpurge = mv88e6352_g1_stu_loadpurge,
 	.serdes_read = mv88e6352_serdes_read,
+	.serdes_write = mv88e6352_serdes_write,
 	.serdes_irq_mapping = mv88e6352_serdes_irq_mapping,
 	.gpio_ops = &mv88e6352_gpio_ops,
 	.avb_ops = &mv88e6352_avb_ops,
diff --git a/drivers/net/dsa/mv88e6xxx/chip.h b/drivers/net/dsa/mv88e6xxx/chip.h
index bbf1e7f6f343..7e9b6eb11216 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.h
+++ b/drivers/net/dsa/mv88e6xxx/chip.h
@@ -595,6 +595,8 @@ struct mv88e6xxx_ops {
 
 	int (*serdes_read)(struct mv88e6xxx_chip *chip, int lane, int device,
 			   int reg, u16 *val);
+	int (*serdes_write)(struct mv88e6xxx_chip *chip, int lane, int reg,
+			    u16 val);
 
 	/* SERDES interrupt handling */
 	unsigned int (*serdes_irq_mapping)(struct mv88e6xxx_chip *chip,
diff --git a/drivers/net/dsa/mv88e6xxx/serdes.c b/drivers/net/dsa/mv88e6xxx/serdes.c
index 5696b94c9155..b988d47ecbdd 100644
--- a/drivers/net/dsa/mv88e6xxx/serdes.c
+++ b/drivers/net/dsa/mv88e6xxx/serdes.c
@@ -25,8 +25,8 @@ int mv88e6352_serdes_read(struct mv88e6xxx_chip *chip, int lane,
 				       reg, val);
 }
 
-static int mv88e6352_serdes_write(struct mv88e6xxx_chip *chip, int reg,
-				  u16 val)
+int mv88e6352_serdes_write(struct mv88e6xxx_chip *chip, int lane, int reg,
+			   u16 val)
 {
 	return mv88e6xxx_phy_page_write(chip, MV88E6352_ADDR_SERDES,
 					MV88E6352_SERDES_PAGE_FIBER,
@@ -549,5 +549,5 @@ int mv88e6352_serdes_set_tx_amplitude(struct mv88e6xxx_chip *chip, int port,
 	ctrl &= ~MV88E6352_SERDES_OUT_AMP_MASK;
 	ctrl |= reg;
 
-	return mv88e6352_serdes_write(chip, MV88E6352_SERDES_SPEC_CTRL2, ctrl);
+	return mv88e6xxx_serdes_write(chip, lane, MV88E6352_SERDES_SPEC_CTRL2, ctrl);
 }
diff --git a/drivers/net/dsa/mv88e6xxx/serdes.h b/drivers/net/dsa/mv88e6xxx/serdes.h
index 9b3a5ece33e7..d3e83c674ef7 100644
--- a/drivers/net/dsa/mv88e6xxx/serdes.h
+++ b/drivers/net/dsa/mv88e6xxx/serdes.h
@@ -124,6 +124,8 @@ int mv88e6352_serdes_read(struct mv88e6xxx_chip *chip, int lane, int device,
 			  int reg, u16 *val);
 int mv88e6390_serdes_read(struct mv88e6xxx_chip *chip, int lane, int device,
 			  int reg, u16 *val);
+int mv88e6352_serdes_write(struct mv88e6xxx_chip *chip, int lane, int reg,
+			   u16 val);
 unsigned int mv88e6352_serdes_irq_mapping(struct mv88e6xxx_chip *chip,
 					  int port);
 unsigned int mv88e6390_serdes_irq_mapping(struct mv88e6xxx_chip *chip,
@@ -166,6 +168,15 @@ static inline int mv88e6xxx_serdes_read(struct mv88e6xxx_chip *chip, int lane,
 	return chip->info->ops->serdes_read(chip, lane, device, reg, val);
 }
 
+static inline int mv88e6xxx_serdes_write(struct mv88e6xxx_chip *chip, int lane,
+					 int reg, u16 val)
+{
+	if (!chip->info->ops->serdes_write)
+		return -EOPNOTSUPP;
+
+	return chip->info->ops->serdes_write(chip, lane, reg, val);
+}
+
 static inline unsigned int
 mv88e6xxx_serdes_irq_mapping(struct mv88e6xxx_chip *chip, int port)
 {
-- 
2.41.0