net: dsa: mv88e6xxx: Add support for SERDES on ports 2-8 for 6390X

The 6390X family has 8 SERDES interfaces. When ports 9 and 10 are not
using all their SERDES interfaces, the unused ones can be assigned to
ports 2-8. Add support for interrupts from SERDES interfaces connected
to these lower ports.

Signed-off-by: Andrew Lunn <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

Author: lunn

drivers/net/dsa/mv88e6xxx/chip.c

@@ -3293,8 +3293,8 @@ static const struct mv88e6xxx_ops mv88e6190x_ops = {
 	.vtu_getnext = mv88e6390_g1_vtu_getnext,
 	.vtu_loadpurge = mv88e6390_g1_vtu_loadpurge,
 	.serdes_power = mv88e6390x_serdes_power,
-	.serdes_irq_setup = mv88e6390_serdes_irq_setup,
-	.serdes_irq_free = mv88e6390_serdes_irq_free,
+	.serdes_irq_setup = mv88e6390x_serdes_irq_setup,
+	.serdes_irq_free = mv88e6390x_serdes_irq_free,
 	.gpio_ops = &mv88e6352_gpio_ops,
 	.phylink_validate = mv88e6390x_phylink_validate,
 };
@@ -3780,8 +3780,8 @@ static const struct mv88e6xxx_ops mv88e6390x_ops = {
 	.vtu_getnext = mv88e6390_g1_vtu_getnext,
 	.vtu_loadpurge = mv88e6390_g1_vtu_loadpurge,
 	.serdes_power = mv88e6390x_serdes_power,
-	.serdes_irq_setup = mv88e6390_serdes_irq_setup,
-	.serdes_irq_free = mv88e6390_serdes_irq_free,
+	.serdes_irq_setup = mv88e6390x_serdes_irq_setup,
+	.serdes_irq_free = mv88e6390x_serdes_irq_free,
 	.gpio_ops = &mv88e6352_gpio_ops,
 	.avb_ops = &mv88e6390_avb_ops,
 	.ptp_ops = &mv88e6352_ptp_ops,

drivers/net/dsa/mv88e6xxx/serdes.c

@@ -619,15 +619,11 @@ static irqreturn_t mv88e6390_serdes_thread_fn(int irq, void *dev_id)
 	return ret;
 }
 
-int mv88e6390_serdes_irq_setup(struct mv88e6xxx_chip *chip, int port)
+int mv88e6390x_serdes_irq_setup(struct mv88e6xxx_chip *chip, int port)
 {
 	int lane;
 	int err;
 
-	/* Only support ports 9 and 10 at the moment */
-	if (port < 9)
-		return 0;
-
 	lane = mv88e6390x_serdes_get_lane(chip, port);
 
 	if (lane == -ENODEV)
@@ -663,11 +659,19 @@ int mv88e6390_serdes_irq_setup(struct mv88e6xxx_chip *chip, int port)
 	return mv88e6390_serdes_irq_enable(chip, port, lane);
 }
 
-void mv88e6390_serdes_irq_free(struct mv88e6xxx_chip *chip, int port)
+int mv88e6390_serdes_irq_setup(struct mv88e6xxx_chip *chip, int port)
+{
+	if (port < 9)
+		return 0;
+
+	return mv88e6390_serdes_irq_setup(chip, port);
+}
+
+void mv88e6390x_serdes_irq_free(struct mv88e6xxx_chip *chip, int port)
 {
 	int lane = mv88e6390x_serdes_get_lane(chip, port);
 
-	if (port < 9)
+	if (lane == -ENODEV)
 		return;
 
 	if (lane < 0)
@@ -685,6 +689,14 @@ void mv88e6390_serdes_irq_free(struct mv88e6xxx_chip *chip, int port)
 	chip->ports[port].serdes_irq = 0;
 }
 
+void mv88e6390_serdes_irq_free(struct mv88e6xxx_chip *chip, int port)
+{
+	if (port < 9)
+		return;
+
+	mv88e6390x_serdes_irq_free(chip, port);
+}
+
 int mv88e6341_serdes_power(struct mv88e6xxx_chip *chip, int port, bool on)
 {
 	u8 cmode = chip->ports[port].cmode;

drivers/net/dsa/mv88e6xxx/serdes.h

@@ -77,6 +77,8 @@ int mv88e6390_serdes_power(struct mv88e6xxx_chip *chip, int port, bool on);
 int mv88e6390x_serdes_power(struct mv88e6xxx_chip *chip, int port, 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 mv88e6390x_serdes_irq_setup(struct mv88e6xxx_chip *chip, int port);
+void mv88e6390x_serdes_irq_free(struct mv88e6xxx_chip *chip, int port);
 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);