net: dsa: mv88e6xxx: introduce .serdes_irq_enable

Introduce a new .serdes_irq_enable operation to prepare the abstraction
of IRQ enabling from the SERDES IRQ setup code.
Signed-off-by: Vivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/dsa/mv88e6xxx/chip.c

@@ -2934,6 +2934,7 @@ static const struct mv88e6xxx_ops mv88e6141_ops = {
 	.serdes_power = mv88e6390_serdes_power,
 	.serdes_get_lane = mv88e6341_serdes_get_lane,
 	.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
+	.serdes_irq_enable = mv88e6390_serdes_irq_enable,
 	.serdes_irq_setup = mv88e6390_serdes_irq_setup,
 	.serdes_irq_free = mv88e6390_serdes_irq_free,
 	.gpio_ops = &mv88e6352_gpio_ops,
@@ -3184,6 +3185,7 @@ static const struct mv88e6xxx_ops mv88e6176_ops = {
 	.serdes_get_lane = mv88e6352_serdes_get_lane,
 	.serdes_power = mv88e6352_serdes_power,
 	.serdes_irq_mapping = mv88e6352_serdes_irq_mapping,
+	.serdes_irq_enable = mv88e6352_serdes_irq_enable,
 	.serdes_irq_setup = mv88e6352_serdes_irq_setup,
 	.serdes_irq_free = mv88e6352_serdes_irq_free,
 	.gpio_ops = &mv88e6352_gpio_ops,
@@ -3268,6 +3270,7 @@ static const struct mv88e6xxx_ops mv88e6190_ops = {
 	.serdes_power = mv88e6390_serdes_power,
 	.serdes_get_lane = mv88e6390_serdes_get_lane,
 	.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
+	.serdes_irq_enable = mv88e6390_serdes_irq_enable,
 	.serdes_irq_setup = mv88e6390_serdes_irq_setup,
 	.serdes_irq_free = mv88e6390_serdes_irq_free,
 	.gpio_ops = &mv88e6352_gpio_ops,
@@ -3316,6 +3319,7 @@ static const struct mv88e6xxx_ops mv88e6190x_ops = {
 	.serdes_power = mv88e6390_serdes_power,
 	.serdes_get_lane = mv88e6390x_serdes_get_lane,
 	.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
+	.serdes_irq_enable = mv88e6390_serdes_irq_enable,
 	.serdes_irq_setup = mv88e6390_serdes_irq_setup,
 	.serdes_irq_free = mv88e6390_serdes_irq_free,
 	.gpio_ops = &mv88e6352_gpio_ops,
@@ -3364,6 +3368,7 @@ static const struct mv88e6xxx_ops mv88e6191_ops = {
 	.serdes_power = mv88e6390_serdes_power,
 	.serdes_get_lane = mv88e6390_serdes_get_lane,
 	.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
+	.serdes_irq_enable = mv88e6390_serdes_irq_enable,
 	.serdes_irq_setup = mv88e6390_serdes_irq_setup,
 	.serdes_irq_free = mv88e6390_serdes_irq_free,
 	.avb_ops = &mv88e6390_avb_ops,
@@ -3414,6 +3419,7 @@ static const struct mv88e6xxx_ops mv88e6240_ops = {
 	.serdes_get_lane = mv88e6352_serdes_get_lane,
 	.serdes_power = mv88e6352_serdes_power,
 	.serdes_irq_mapping = mv88e6352_serdes_irq_mapping,
+	.serdes_irq_enable = mv88e6352_serdes_irq_enable,
 	.serdes_irq_setup = mv88e6352_serdes_irq_setup,
 	.serdes_irq_free = mv88e6352_serdes_irq_free,
 	.gpio_ops = &mv88e6352_gpio_ops,
@@ -3504,6 +3510,7 @@ static const struct mv88e6xxx_ops mv88e6290_ops = {
 	.serdes_power = mv88e6390_serdes_power,
 	.serdes_get_lane = mv88e6390_serdes_get_lane,
 	.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
+	.serdes_irq_enable = mv88e6390_serdes_irq_enable,
 	.serdes_irq_setup = mv88e6390_serdes_irq_setup,
 	.serdes_irq_free = mv88e6390_serdes_irq_free,
 	.gpio_ops = &mv88e6352_gpio_ops,
@@ -3642,6 +3649,7 @@ static const struct mv88e6xxx_ops mv88e6341_ops = {
 	.serdes_power = mv88e6390_serdes_power,
 	.serdes_get_lane = mv88e6341_serdes_get_lane,
 	.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
+	.serdes_irq_enable = mv88e6390_serdes_irq_enable,
 	.serdes_irq_setup = mv88e6390_serdes_irq_setup,
 	.serdes_irq_free = mv88e6390_serdes_irq_free,
 	.gpio_ops = &mv88e6352_gpio_ops,
@@ -3775,6 +3783,7 @@ static const struct mv88e6xxx_ops mv88e6352_ops = {
 	.serdes_get_lane = mv88e6352_serdes_get_lane,
 	.serdes_power = mv88e6352_serdes_power,
 	.serdes_irq_mapping = mv88e6352_serdes_irq_mapping,
+	.serdes_irq_enable = mv88e6352_serdes_irq_enable,
 	.serdes_irq_setup = mv88e6352_serdes_irq_setup,
 	.serdes_irq_free = mv88e6352_serdes_irq_free,
 	.gpio_ops = &mv88e6352_gpio_ops,
@@ -3830,6 +3839,7 @@ static const struct mv88e6xxx_ops mv88e6390_ops = {
 	.serdes_power = mv88e6390_serdes_power,
 	.serdes_get_lane = mv88e6390_serdes_get_lane,
 	.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
+	.serdes_irq_enable = mv88e6390_serdes_irq_enable,
 	.serdes_irq_setup = mv88e6390_serdes_irq_setup,
 	.serdes_irq_free = mv88e6390_serdes_irq_free,
 	.gpio_ops = &mv88e6352_gpio_ops,
@@ -3882,6 +3892,7 @@ static const struct mv88e6xxx_ops mv88e6390x_ops = {
 	.serdes_power = mv88e6390_serdes_power,
 	.serdes_get_lane = mv88e6390x_serdes_get_lane,
 	.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
+	.serdes_irq_enable = mv88e6390_serdes_irq_enable,
 	.serdes_irq_setup = mv88e6390_serdes_irq_setup,
 	.serdes_irq_free = mv88e6390_serdes_irq_free,
 	.gpio_ops = &mv88e6352_gpio_ops,

drivers/net/dsa/mv88e6xxx/chip.h

@@ -452,6 +452,8 @@ struct mv88e6xxx_ops {
 					   int port);
 	int (*serdes_irq_setup)(struct mv88e6xxx_chip *chip, int port);
 	void (*serdes_irq_free)(struct mv88e6xxx_chip *chip, int port);
+	int (*serdes_irq_enable)(struct mv88e6xxx_chip *chip, int port, u8 lane,
+				 bool enable);
 
 	/* Statistics from the SERDES interface */
 	int (*serdes_get_sset_count)(struct mv88e6xxx_chip *chip, int port);

drivers/net/dsa/mv88e6xxx/port.c

@@ -434,7 +434,7 @@ static int mv88e6xxx_port_set_cmode(struct mv88e6xxx_chip *chip, int port,
 	lane = mv88e6xxx_serdes_get_lane(chip, port);
 	if (lane) {
 		if (chip->ports[port].serdes_irq) {
-			err = mv88e6390_serdes_irq_disable(chip, port, lane);
+			err = mv88e6xxx_serdes_irq_disable(chip, port, lane);
 			if (err)
 				return err;
 		}
@@ -469,7 +469,7 @@ static int mv88e6xxx_port_set_cmode(struct mv88e6xxx_chip *chip, int port,
 			return err;
 
 		if (chip->ports[port].serdes_irq) {
-			err = mv88e6390_serdes_irq_enable(chip, port, lane);
+			err = mv88e6xxx_serdes_irq_enable(chip, port, lane);
 			if (err)
 				return err;
 		}

drivers/net/dsa/mv88e6xxx/serdes.c

@@ -226,15 +226,15 @@ static irqreturn_t mv88e6352_serdes_thread_fn(int irq, void *dev_id)
 	return ret;
 }
 
-static int mv88e6352_serdes_irq_enable(struct mv88e6xxx_chip *chip)
+int mv88e6352_serdes_irq_enable(struct mv88e6xxx_chip *chip, int port, u8 lane,
+				bool enable)
 {
-	return mv88e6352_serdes_write(chip, MV88E6352_SERDES_INT_ENABLE,
-				      MV88E6352_SERDES_INT_LINK_CHANGE);
-}
+	u16 val = 0;
 
-static int mv88e6352_serdes_irq_disable(struct mv88e6xxx_chip *chip)
-{
-	return mv88e6352_serdes_write(chip, MV88E6352_SERDES_INT_ENABLE, 0);
+	if (enable)
+		val |= MV88E6352_SERDES_INT_LINK_CHANGE;
+
+	return mv88e6352_serdes_write(chip, MV88E6352_SERDES_INT_ENABLE, val);
 }
 
 unsigned int mv88e6352_serdes_irq_mapping(struct mv88e6xxx_chip *chip, int port)
@@ -245,9 +245,11 @@ unsigned int mv88e6352_serdes_irq_mapping(struct mv88e6xxx_chip *chip, int port)
 int mv88e6352_serdes_irq_setup(struct mv88e6xxx_chip *chip, int port)
 {
 	unsigned int irq;
+	u8 lane;
 	int err;
 
-	if (!mv88e6352_port_has_serdes(chip, port))
+	lane = mv88e6xxx_serdes_get_lane(chip, port);
+	if (!lane)
 		return 0;
 
 	irq = mv88e6xxx_serdes_irq_mapping(chip, port);
@@ -272,15 +274,18 @@ int mv88e6352_serdes_irq_setup(struct mv88e6xxx_chip *chip, int port)
 		return err;
 	}
 
-	return mv88e6352_serdes_irq_enable(chip);
+	return mv88e6xxx_serdes_irq_enable(chip, port, lane);
 }
 
 void mv88e6352_serdes_irq_free(struct mv88e6xxx_chip *chip, int port)
 {
-	if (!mv88e6352_port_has_serdes(chip, port))
+	u8 lane;
+
+	lane = mv88e6xxx_serdes_get_lane(chip, port);
+	if (!lane)
 		return;
 
-	mv88e6352_serdes_irq_disable(chip);
+	mv88e6xxx_serdes_irq_disable(chip, port, lane);
 
 	/* Freeing the IRQ will trigger irq callbacks. So we cannot
 	 * hold the reg_lock.
@@ -546,51 +551,31 @@ static void mv88e6390_serdes_irq_link_sgmii(struct mv88e6xxx_chip *chip,
 }
 
 static int mv88e6390_serdes_irq_enable_sgmii(struct mv88e6xxx_chip *chip,
-					     u8 lane)
-{
-	return mv88e6390_serdes_write(chip, lane, MDIO_MMD_PHYXS,
-				      MV88E6390_SGMII_INT_ENABLE,
-				      MV88E6390_SGMII_INT_LINK_DOWN |
-				      MV88E6390_SGMII_INT_LINK_UP);
-}
-
-static int mv88e6390_serdes_irq_disable_sgmii(struct mv88e6xxx_chip *chip,
-					      u8 lane)
+					     u8 lane, bool enable)
 {
-	return mv88e6390_serdes_write(chip, lane, MDIO_MMD_PHYXS,
-				      MV88E6390_SGMII_INT_ENABLE, 0);
-}
+	u16 val = 0;
 
-int mv88e6390_serdes_irq_enable(struct mv88e6xxx_chip *chip, int port,
-				u8 lane)
-{
-	u8 cmode = chip->ports[port].cmode;
-	int err = 0;
+	if (enable)
+		val |= MV88E6390_SGMII_INT_LINK_DOWN |
+			MV88E6390_SGMII_INT_LINK_UP;
 
-	switch (cmode) {
-	case MV88E6XXX_PORT_STS_CMODE_SGMII:
-	case MV88E6XXX_PORT_STS_CMODE_1000BASEX:
-	case MV88E6XXX_PORT_STS_CMODE_2500BASEX:
-		err = mv88e6390_serdes_irq_enable_sgmii(chip, lane);
-	}
-
-	return err;
+	return mv88e6390_serdes_write(chip, lane, MDIO_MMD_PHYXS,
+				      MV88E6390_SGMII_INT_ENABLE, val);
 }
 
-int mv88e6390_serdes_irq_disable(struct mv88e6xxx_chip *chip, int port,
-				 u8 lane)
+int mv88e6390_serdes_irq_enable(struct mv88e6xxx_chip *chip, int port, u8 lane,
+				bool enable)
 {
 	u8 cmode = chip->ports[port].cmode;
-	int err = 0;
 
 	switch (cmode) {
 	case MV88E6XXX_PORT_STS_CMODE_SGMII:
 	case MV88E6XXX_PORT_STS_CMODE_1000BASEX:
 	case MV88E6XXX_PORT_STS_CMODE_2500BASEX:
-		err = mv88e6390_serdes_irq_disable_sgmii(chip, lane);
+		return mv88e6390_serdes_irq_enable_sgmii(chip, lane, enable);
 	}
 
-	return err;
+	return 0;
 }
 
 static int mv88e6390_serdes_irq_status_sgmii(struct mv88e6xxx_chip *chip,
@@ -676,7 +661,7 @@ int mv88e6390_serdes_irq_setup(struct mv88e6xxx_chip *chip, int port)
 		return err;
 	}
 
-	return mv88e6390_serdes_irq_enable(chip, port, lane);
+	return mv88e6xxx_serdes_irq_enable(chip, port, lane);
 }
 
 void mv88e6390_serdes_irq_free(struct mv88e6xxx_chip *chip, int port)
@@ -687,7 +672,7 @@ void mv88e6390_serdes_irq_free(struct mv88e6xxx_chip *chip, int port)
 	if (!lane)
 		return;
 
-	mv88e6390_serdes_irq_disable(chip, port, lane);
+	mv88e6xxx_serdes_irq_disable(chip, port, lane);
 
 	/* Freeing the IRQ will trigger irq callbacks. So we cannot
 	 * hold the reg_lock.

drivers/net/dsa/mv88e6xxx/serdes.h

@@ -88,15 +88,15 @@ int mv88e6390_serdes_power(struct mv88e6xxx_chip *chip, int port, u8 lane,
 			   bool on);
 int mv88e6390_serdes_irq_setup(struct mv88e6xxx_chip *chip, int port);
 void mv88e6390_serdes_irq_free(struct mv88e6xxx_chip *chip, int port);
+int mv88e6352_serdes_irq_enable(struct mv88e6xxx_chip *chip, int port, u8 lane,
+				bool enable);
+int mv88e6390_serdes_irq_enable(struct mv88e6xxx_chip *chip, int port, u8 lane,
+				bool enable);
 int mv88e6352_serdes_get_sset_count(struct mv88e6xxx_chip *chip, int port);
 int mv88e6352_serdes_get_strings(struct mv88e6xxx_chip *chip,
 				 int port, uint8_t *data);
 int mv88e6352_serdes_get_stats(struct mv88e6xxx_chip *chip, int port,
 			       uint64_t *data);
-int mv88e6390_serdes_irq_enable(struct mv88e6xxx_chip *chip, int port,
-				u8 lane);
-int mv88e6390_serdes_irq_disable(struct mv88e6xxx_chip *chip, int port,
-				 u8 lane);
 int mv88e6352_serdes_irq_setup(struct mv88e6xxx_chip *chip, int port);
 void mv88e6352_serdes_irq_free(struct mv88e6xxx_chip *chip, int port);
 
@@ -137,4 +137,22 @@ mv88e6xxx_serdes_irq_mapping(struct mv88e6xxx_chip *chip, int port)
 	return chip->info->ops->serdes_irq_mapping(chip, port);
 }
 
+static inline int mv88e6xxx_serdes_irq_enable(struct mv88e6xxx_chip *chip,
+					      int port, u8 lane)
+{
+	if (!chip->info->ops->serdes_irq_enable)
+		return -EOPNOTSUPP;
+
+	return chip->info->ops->serdes_irq_enable(chip, port, lane, true);
+}
+
+static inline int mv88e6xxx_serdes_irq_disable(struct mv88e6xxx_chip *chip,
+					       int port, u8 lane)
+{
+	if (!chip->info->ops->serdes_irq_enable)
+		return -EOPNOTSUPP;
+
+	return chip->info->ops->serdes_irq_enable(chip, port, lane, false);
+}
+
 #endif