net: dsa: mv88e6xxx: centralize SERDES IRQ handling
The .serdes_irq_setup are all following the same steps: get the SERDES
lane, get the IRQ mapping, request the IRQ, then enable it. So do
the .serdes_irq_free implementations: get the SERDES lane, disable
the IRQ, then free it.
This patch removes these operations in favor of generic functions.
Signed-off-by: Vivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index c2061e2..30365a5 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -2054,6 +2054,71 @@ static int mv88e6xxx_setup_egress_floods(struct mv88e6xxx_chip *chip, int port)
return 0;
}
+static irqreturn_t mv88e6xxx_serdes_irq_thread_fn(int irq, void *dev_id)
+{
+ struct mv88e6xxx_port *mvp = dev_id;
+ struct mv88e6xxx_chip *chip = mvp->chip;
+ irqreturn_t ret = IRQ_NONE;
+ int port = mvp->port;
+ u8 lane;
+
+ mv88e6xxx_reg_lock(chip);
+ lane = mv88e6xxx_serdes_get_lane(chip, port);
+ if (lane)
+ ret = mv88e6xxx_serdes_irq_status(chip, port, lane);
+ mv88e6xxx_reg_unlock(chip);
+
+ return ret;
+}
+
+static int mv88e6xxx_serdes_irq_request(struct mv88e6xxx_chip *chip, int port,
+ u8 lane)
+{
+ struct mv88e6xxx_port *dev_id = &chip->ports[port];
+ unsigned int irq;
+ int err;
+
+ /* Nothing to request if this SERDES port has no IRQ */
+ irq = mv88e6xxx_serdes_irq_mapping(chip, port);
+ if (!irq)
+ return 0;
+
+ /* Requesting the IRQ will trigger IRQ callbacks, so release the lock */
+ mv88e6xxx_reg_unlock(chip);
+ err = request_threaded_irq(irq, NULL, mv88e6xxx_serdes_irq_thread_fn,
+ IRQF_ONESHOT, "mv88e6xxx-serdes", dev_id);
+ mv88e6xxx_reg_lock(chip);
+ if (err)
+ return err;
+
+ dev_id->serdes_irq = irq;
+
+ return mv88e6xxx_serdes_irq_enable(chip, port, lane);
+}
+
+static int mv88e6xxx_serdes_irq_free(struct mv88e6xxx_chip *chip, int port,
+ u8 lane)
+{
+ struct mv88e6xxx_port *dev_id = &chip->ports[port];
+ unsigned int irq = dev_id->serdes_irq;
+ int err;
+
+ /* Nothing to free if no IRQ has been requested */
+ if (!irq)
+ return 0;
+
+ err = mv88e6xxx_serdes_irq_disable(chip, port, lane);
+
+ /* Freeing the IRQ will trigger IRQ callbacks, so release the lock */
+ mv88e6xxx_reg_unlock(chip);
+ free_irq(irq, dev_id);
+ mv88e6xxx_reg_lock(chip);
+
+ dev_id->serdes_irq = 0;
+
+ return err;
+}
+
static int mv88e6xxx_serdes_power(struct mv88e6xxx_chip *chip, int port,
bool on)
{
@@ -2069,12 +2134,11 @@ static int mv88e6xxx_serdes_power(struct mv88e6xxx_chip *chip, int port,
if (err)
return err;
- if (chip->info->ops->serdes_irq_setup)
- err = chip->info->ops->serdes_irq_setup(chip, port);
+ err = mv88e6xxx_serdes_irq_request(chip, port, lane);
} else {
- if (chip->info->ops->serdes_irq_free &&
- chip->ports[port].serdes_irq)
- chip->info->ops->serdes_irq_free(chip, port);
+ err = mv88e6xxx_serdes_irq_free(chip, port, lane);
+ if (err)
+ return err;
err = mv88e6xxx_serdes_power_down(chip, port, lane);
}
@@ -2936,8 +3000,6 @@ static const struct mv88e6xxx_ops mv88e6141_ops = {
.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
.serdes_irq_enable = mv88e6390_serdes_irq_enable,
.serdes_irq_status = mv88e6390_serdes_irq_status,
- .serdes_irq_setup = mv88e6390_serdes_irq_setup,
- .serdes_irq_free = mv88e6390_serdes_irq_free,
.gpio_ops = &mv88e6352_gpio_ops,
.phylink_validate = mv88e6341_phylink_validate,
};
@@ -3188,8 +3250,6 @@ static const struct mv88e6xxx_ops mv88e6176_ops = {
.serdes_irq_mapping = mv88e6352_serdes_irq_mapping,
.serdes_irq_enable = mv88e6352_serdes_irq_enable,
.serdes_irq_status = mv88e6352_serdes_irq_status,
- .serdes_irq_setup = mv88e6352_serdes_irq_setup,
- .serdes_irq_free = mv88e6352_serdes_irq_free,
.gpio_ops = &mv88e6352_gpio_ops,
.phylink_validate = mv88e6352_phylink_validate,
};
@@ -3274,8 +3334,6 @@ static const struct mv88e6xxx_ops mv88e6190_ops = {
.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
.serdes_irq_enable = mv88e6390_serdes_irq_enable,
.serdes_irq_status = mv88e6390_serdes_irq_status,
- .serdes_irq_setup = mv88e6390_serdes_irq_setup,
- .serdes_irq_free = mv88e6390_serdes_irq_free,
.gpio_ops = &mv88e6352_gpio_ops,
.phylink_validate = mv88e6390_phylink_validate,
};
@@ -3324,8 +3382,6 @@ static const struct mv88e6xxx_ops mv88e6190x_ops = {
.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
.serdes_irq_enable = mv88e6390_serdes_irq_enable,
.serdes_irq_status = mv88e6390_serdes_irq_status,
- .serdes_irq_setup = mv88e6390_serdes_irq_setup,
- .serdes_irq_free = mv88e6390_serdes_irq_free,
.gpio_ops = &mv88e6352_gpio_ops,
.phylink_validate = mv88e6390x_phylink_validate,
};
@@ -3374,8 +3430,6 @@ static const struct mv88e6xxx_ops mv88e6191_ops = {
.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
.serdes_irq_enable = mv88e6390_serdes_irq_enable,
.serdes_irq_status = mv88e6390_serdes_irq_status,
- .serdes_irq_setup = mv88e6390_serdes_irq_setup,
- .serdes_irq_free = mv88e6390_serdes_irq_free,
.avb_ops = &mv88e6390_avb_ops,
.ptp_ops = &mv88e6352_ptp_ops,
.phylink_validate = mv88e6390_phylink_validate,
@@ -3426,8 +3480,6 @@ static const struct mv88e6xxx_ops mv88e6240_ops = {
.serdes_irq_mapping = mv88e6352_serdes_irq_mapping,
.serdes_irq_enable = mv88e6352_serdes_irq_enable,
.serdes_irq_status = mv88e6352_serdes_irq_status,
- .serdes_irq_setup = mv88e6352_serdes_irq_setup,
- .serdes_irq_free = mv88e6352_serdes_irq_free,
.gpio_ops = &mv88e6352_gpio_ops,
.avb_ops = &mv88e6352_avb_ops,
.ptp_ops = &mv88e6352_ptp_ops,
@@ -3518,8 +3570,6 @@ static const struct mv88e6xxx_ops mv88e6290_ops = {
.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
.serdes_irq_enable = mv88e6390_serdes_irq_enable,
.serdes_irq_status = mv88e6390_serdes_irq_status,
- .serdes_irq_setup = mv88e6390_serdes_irq_setup,
- .serdes_irq_free = mv88e6390_serdes_irq_free,
.gpio_ops = &mv88e6352_gpio_ops,
.avb_ops = &mv88e6390_avb_ops,
.ptp_ops = &mv88e6352_ptp_ops,
@@ -3658,8 +3708,6 @@ static const struct mv88e6xxx_ops mv88e6341_ops = {
.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
.serdes_irq_enable = mv88e6390_serdes_irq_enable,
.serdes_irq_status = mv88e6390_serdes_irq_status,
- .serdes_irq_setup = mv88e6390_serdes_irq_setup,
- .serdes_irq_free = mv88e6390_serdes_irq_free,
.gpio_ops = &mv88e6352_gpio_ops,
.avb_ops = &mv88e6390_avb_ops,
.ptp_ops = &mv88e6352_ptp_ops,
@@ -3793,8 +3841,6 @@ static const struct mv88e6xxx_ops mv88e6352_ops = {
.serdes_irq_mapping = mv88e6352_serdes_irq_mapping,
.serdes_irq_enable = mv88e6352_serdes_irq_enable,
.serdes_irq_status = mv88e6352_serdes_irq_status,
- .serdes_irq_setup = mv88e6352_serdes_irq_setup,
- .serdes_irq_free = mv88e6352_serdes_irq_free,
.gpio_ops = &mv88e6352_gpio_ops,
.avb_ops = &mv88e6352_avb_ops,
.ptp_ops = &mv88e6352_ptp_ops,
@@ -3850,8 +3896,6 @@ static const struct mv88e6xxx_ops mv88e6390_ops = {
.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
.serdes_irq_enable = mv88e6390_serdes_irq_enable,
.serdes_irq_status = mv88e6390_serdes_irq_status,
- .serdes_irq_setup = mv88e6390_serdes_irq_setup,
- .serdes_irq_free = mv88e6390_serdes_irq_free,
.gpio_ops = &mv88e6352_gpio_ops,
.avb_ops = &mv88e6390_avb_ops,
.ptp_ops = &mv88e6352_ptp_ops,
@@ -3904,8 +3948,6 @@ static const struct mv88e6xxx_ops mv88e6390x_ops = {
.serdes_irq_mapping = mv88e6390_serdes_irq_mapping,
.serdes_irq_enable = mv88e6390_serdes_irq_enable,
.serdes_irq_status = mv88e6390_serdes_irq_status,
- .serdes_irq_setup = mv88e6390_serdes_irq_setup,
- .serdes_irq_free = mv88e6390_serdes_irq_free,
.gpio_ops = &mv88e6352_gpio_ops,
.avb_ops = &mv88e6390_avb_ops,
.ptp_ops = &mv88e6352_ptp_ops,