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phy: nxp-c45-tja11xx: add interrupt support

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Added .config_intr and .handle_interrupt callbacks.

Link event interrupt will trigger an interrupt every time when the link
goes up or down.

Signed-off-by: Radu Pirea (NXP OSS) <radu-nicolae.pirea@oss.nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Radu Pirea (NXP OSS) 2021-04-23 18:00:50 +03:00 committed by David S. Miller
parent cbbd21a47f
commit b2f0ca00e6
1 changed files with 33 additions and 0 deletions
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33
drivers/net/phy/nxp-c45-tja11xx.c
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@ -28,6 +28,11 @@
#define DEVICE_CONTROL_CONFIG_GLOBAL_EN BIT(14)
#define DEVICE_CONTROL_CONFIG_ALL_EN BIT(13)
#define VEND1_PHY_IRQ_ACK 0x80A0
#define VEND1_PHY_IRQ_EN 0x80A1
#define VEND1_PHY_IRQ_STATUS 0x80A2
#define PHY_IRQ_LINK_EVENT BIT(1)
#define VEND1_PHY_CONTROL 0x8100
#define PHY_CONFIG_EN BIT(14)
#define PHY_START_OP BIT(0)
@ -188,6 +193,32 @@ static int nxp_c45_start_op(struct phy_device *phydev)
PHY_START_OP);
}
static int nxp_c45_config_intr(struct phy_device *phydev)
{
if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
return phy_set_bits_mmd(phydev, MDIO_MMD_VEND1,
VEND1_PHY_IRQ_EN, PHY_IRQ_LINK_EVENT);
else
return phy_clear_bits_mmd(phydev, MDIO_MMD_VEND1,
VEND1_PHY_IRQ_EN, PHY_IRQ_LINK_EVENT);
}
static irqreturn_t nxp_c45_handle_interrupt(struct phy_device *phydev)
{
irqreturn_t ret = IRQ_NONE;
int irq;
irq = phy_read_mmd(phydev, MDIO_MMD_VEND1, VEND1_PHY_IRQ_STATUS);
if (irq & PHY_IRQ_LINK_EVENT) {
phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_PHY_IRQ_ACK,
PHY_IRQ_LINK_EVENT);
phy_trigger_machine(phydev);
ret = IRQ_HANDLED;
}
return ret;
}
static int nxp_c45_soft_reset(struct phy_device *phydev)
{
int ret;
@ -560,6 +591,8 @@ static struct phy_driver nxp_c45_driver[] = {
.soft_reset = nxp_c45_soft_reset,
.config_aneg = nxp_c45_config_aneg,
.config_init = nxp_c45_config_init,
.config_intr = nxp_c45_config_intr,
.handle_interrupt = nxp_c45_handle_interrupt,
.read_status = nxp_c45_read_status,
.suspend = genphy_c45_pma_suspend,
.resume = genphy_c45_pma_resume,