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net: dsa: mv88e6xxx: centralize SERDES IRQ handling

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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>
This commit is contained in:
Vivien Didelot
2019-08-31 16:18:36 -04:00
committed by David S. Miller
parent 907b9b9fca
commit 45de77ff82
4 changed files with 69 additions and 175 deletions
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96
drivers/net/dsa/mv88e6xxx/chip.c
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@@ -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,