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net: phy: Add support for polling cable test

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Some PHYs are not capable of generating interrupts when a cable test
finished. They do however support interrupts for normal operations,
like link up/down. As such, the PHY state machine would normally not
poll the PHY.

Add support for indicating the PHY state machine must poll the PHY
when performing a cable test.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Andrew Lunn 2020-05-10 21:12:32 +02:00 committed by Jakub Kicinski
parent a68a813836
commit 97c2243896
2 changed files with 7 additions and 0 deletions
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2
drivers/net/phy/phy.c
View File

@ -523,6 +523,8 @@ int phy_start_cable_test(struct phy_device *phydev,
phydev->state = PHY_CABLETEST;
if (phy_polling_mode(phydev))
phy_trigger_machine(phydev);
out:
mutex_unlock(&phydev->lock);

5
include/linux/phy.h
View File

@ -79,6 +79,7 @@ extern const int phy_10gbit_features_array[1];
#define PHY_IS_INTERNAL 0x00000001
#define PHY_RST_AFTER_CLK_EN 0x00000002
#define PHY_POLL_CABLE_TEST 0x00000004
#define MDIO_DEVICE_IS_PHY 0x80000000
/* Interface Mode definitions */
@ -1061,6 +1062,10 @@ static inline bool phy_interrupt_is_valid(struct phy_device *phydev)
*/
static inline bool phy_polling_mode(struct phy_device *phydev)
{
if (phydev->state == PHY_CABLETEST)
if (phydev->drv->flags & PHY_POLL_CABLE_TEST)
return true;
return phydev->irq == PHY_POLL;
}