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From: Florian Fainelli <f.fainelli@gmail.com>
To: netdev@vger.kernel.org
Cc: Russell King <rmk+kernel@armlinux.org.uk>,
	Florian Fainelli <f.fainelli@gmail.com>,
	privat@egil-hjelmeland.no, andrew@lunn.ch,
	vivien.didelot@savoirfairelinux.com, davem@davemloft.net,
	sean.wang@mediatek.com, Woojung.Huh@microchip.com,
	john@phrozen.org, cphealy@gmail.com
Subject: [PATCH net-next v2 3/9] net: phy: phylink: Poll link GPIOs
Date: Thu, 10 May 2018 13:17:31 -0700	[thread overview]
Message-ID: <20180510201737.13887-4-f.fainelli@gmail.com> (raw)
In-Reply-To: <20180510201737.13887-1-f.fainelli@gmail.com>

From: Russell King <rmk+kernel@armlinux.org.uk>

When using a fixed link with a link GPIO, we need to poll that GPIO to
determine link state changes. This is consistent with what fixed_phy.c does.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 drivers/net/phy/phylink.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index 6392b5248cf5..581ce93ecaf9 100644
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -19,6 +19,7 @@
 #include <linux/phylink.h>
 #include <linux/rtnetlink.h>
 #include <linux/spinlock.h>
+#include <linux/timer.h>
 #include <linux/workqueue.h>
 
 #include "sfp.h"
@@ -54,6 +55,7 @@ struct phylink {
 	/* The link configuration settings */
 	struct phylink_link_state link_config;
 	struct gpio_desc *link_gpio;
+	struct timer_list link_poll;
 	void (*get_fixed_state)(struct net_device *dev,
 				struct phylink_link_state *s);
 
@@ -500,6 +502,15 @@ static void phylink_run_resolve(struct phylink *pl)
 		queue_work(system_power_efficient_wq, &pl->resolve);
 }
 
+static void phylink_fixed_poll(struct timer_list *t)
+{
+	struct phylink *pl = container_of(t, struct phylink, link_poll);
+
+	mod_timer(t, jiffies + HZ);
+
+	phylink_run_resolve(pl);
+}
+
 static const struct sfp_upstream_ops sfp_phylink_ops;
 
 static int phylink_register_sfp(struct phylink *pl,
@@ -572,6 +583,7 @@ struct phylink *phylink_create(struct net_device *ndev,
 	pl->link_config.an_enabled = true;
 	pl->ops = ops;
 	__set_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state);
+	timer_setup(&pl->link_poll, phylink_fixed_poll, 0);
 
 	bitmap_fill(pl->supported, __ETHTOOL_LINK_MODE_MASK_NBITS);
 	linkmode_copy(pl->link_config.advertising, pl->supported);
@@ -905,6 +917,8 @@ 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))
+		mod_timer(&pl->link_poll, jiffies + HZ);
 	if (pl->sfp_bus)
 		sfp_upstream_start(pl->sfp_bus);
 	if (pl->phydev)
@@ -929,6 +943,8 @@ 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);
 
 	set_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state);
 	queue_work(system_power_efficient_wq, &pl->resolve);
-- 
2.14.1

  parent reply	other threads:[~2018-05-10 20:17 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-10 20:17 [PATCH net-next v2 0/9] net: dsa: Plug in PHYLINK support Florian Fainelli
2018-05-10 20:17 ` [PATCH net-next v2 1/9] net: phy: phylink: Use gpiod_get_value_cansleep() Florian Fainelli
2018-05-10 20:17 ` [PATCH net-next v2 2/9] net: phy: phylink: Release link GPIO Florian Fainelli
2018-05-10 20:17 ` Florian Fainelli [this message]
2018-05-10 20:29   ` [PATCH net-next v2 3/9] net: phy: phylink: Poll link GPIOs Russell King - ARM Linux
2018-05-10 20:32     ` Florian Fainelli
2018-05-10 20:17 ` [PATCH net-next v2 4/9] net: dsa: Add PHYLINK switch operations Florian Fainelli
2018-05-10 20:17 ` [PATCH net-next v2 5/9] net: dsa: bcm_sf2: Implement phylink_mac_ops Florian Fainelli
2018-05-10 20:17 ` [PATCH net-next v2 6/9] net: dsa: Eliminate dsa_slave_get_link() Florian Fainelli
2018-05-10 20:17 ` [PATCH net-next v2 7/9] net: dsa: mv88e6xxx: add PHYLINK support Florian Fainelli
2018-05-10 20:17 ` [PATCH net-next v2 8/9] net: dsa: Plug in " Florian Fainelli
2018-05-10 20:17 ` [PATCH net-next v2 9/9] net: dsa: bcm_sf2: Get rid of PHYLIB functions Florian Fainelli
2018-05-11 16:23 ` [PATCH net-next v2 0/9] net: dsa: Plug in PHYLINK support David Miller

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