mirror of https://github.com/hak5/openwrt.git
91 lines
2.8 KiB
Diff
91 lines
2.8 KiB
Diff
From cba0aba37d2228556e0d1f776d403435868cdbfa Mon Sep 17 00:00:00 2001
|
|
From: Russell King <rmk+kernel@armlinux.org.uk>
|
|
Date: Tue, 28 May 2019 10:57:23 +0100
|
|
Subject: [PATCH 607/660] net: phylink: support for link gpio interrupt
|
|
|
|
Add support for using GPIO interrupts with a fixed-link GPIO rather than
|
|
polling the GPIO every second and invoking the phylink resolution. This
|
|
avoids unnecessary calls to mac_config().
|
|
|
|
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
|
|
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
|
|
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
|
|
---
|
|
drivers/net/phy/phylink.c | 36 ++++++++++++++++++++++++++++++++----
|
|
1 file changed, 32 insertions(+), 4 deletions(-)
|
|
|
|
--- a/drivers/net/phy/phylink.c
|
|
+++ b/drivers/net/phy/phylink.c
|
|
@@ -59,6 +59,7 @@ struct phylink {
|
|
phy_interface_t cur_interface;
|
|
|
|
struct gpio_desc *link_gpio;
|
|
+ unsigned int link_irq;
|
|
struct timer_list link_poll;
|
|
void (*get_fixed_state)(struct net_device *dev,
|
|
struct phylink_link_state *s);
|
|
@@ -645,7 +646,7 @@ void phylink_destroy(struct phylink *pl)
|
|
{
|
|
if (pl->sfp_bus)
|
|
sfp_unregister_upstream(pl->sfp_bus);
|
|
- if (!IS_ERR_OR_NULL(pl->link_gpio))
|
|
+ if (pl->link_gpio)
|
|
gpiod_put(pl->link_gpio);
|
|
|
|
cancel_work_sync(&pl->resolve);
|
|
@@ -912,6 +913,15 @@ void phylink_mac_change(struct phylink *
|
|
}
|
|
EXPORT_SYMBOL_GPL(phylink_mac_change);
|
|
|
|
+static irqreturn_t phylink_link_handler(int irq, void *data)
|
|
+{
|
|
+ struct phylink *pl = data;
|
|
+
|
|
+ phylink_run_resolve(pl);
|
|
+
|
|
+ return IRQ_HANDLED;
|
|
+}
|
|
+
|
|
/**
|
|
* phylink_start() - start a phylink instance
|
|
* @pl: a pointer to a &struct phylink returned from phylink_create()
|
|
@@ -947,7 +957,22 @@ void phylink_start(struct phylink *pl)
|
|
clear_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state);
|
|
phylink_run_resolve(pl);
|
|
|
|
- if (pl->link_an_mode == MLO_AN_FIXED && !IS_ERR(pl->link_gpio))
|
|
+ if (pl->link_an_mode == MLO_AN_FIXED && pl->link_gpio) {
|
|
+ int irq = gpiod_to_irq(pl->link_gpio);
|
|
+
|
|
+ if (irq > 0) {
|
|
+ if (!request_irq(irq, phylink_link_handler,
|
|
+ IRQF_TRIGGER_RISING |
|
|
+ IRQF_TRIGGER_FALLING,
|
|
+ "netdev link", pl))
|
|
+ pl->link_irq = irq;
|
|
+ else
|
|
+ irq = 0;
|
|
+ }
|
|
+ if (irq <= 0)
|
|
+ mod_timer(&pl->link_poll, jiffies + HZ);
|
|
+ }
|
|
+ if (pl->link_an_mode == MLO_AN_FIXED && pl->get_fixed_state)
|
|
mod_timer(&pl->link_poll, jiffies + HZ);
|
|
if (pl->sfp_bus)
|
|
sfp_upstream_start(pl->sfp_bus);
|
|
@@ -973,8 +998,11 @@ void phylink_stop(struct phylink *pl)
|
|
phy_stop(pl->phydev);
|
|
if (pl->sfp_bus)
|
|
sfp_upstream_stop(pl->sfp_bus);
|
|
- if (pl->link_an_mode == MLO_AN_FIXED && !IS_ERR(pl->link_gpio))
|
|
- del_timer_sync(&pl->link_poll);
|
|
+ del_timer_sync(&pl->link_poll);
|
|
+ if (pl->link_irq) {
|
|
+ free_irq(pl->link_irq, pl);
|
|
+ pl->link_irq = 0;
|
|
+ }
|
|
|
|
phylink_run_resolve_and_disable(pl, PHYLINK_DISABLE_STOPPED);
|
|
}
|