[PATCH net-next v3 1/5] net: dsa: b53: Add ability to enable/disable port interrupts

[Florian Fainelli]

Some switches expose individual interrupt line(s) for port specific
event(s), allow configuring these interrupts at an appropriate time
during port_enable/disable callbacks where all port specific resources
are known to be set-up and ready for use.

Signed-off-by: Florian Fainelli <f.faine...@gmail.com>
---
 drivers/net/dsa/b53/b53_common.c | 9 +++++++++
 drivers/net/dsa/b53/b53_priv.h   | 2 ++
 2 files changed, 11 insertions(+)

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index d93c790bfbe8..85ed264bc163 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -502,8 +502,14 @@ int b53_enable_port(struct dsa_switch *ds, int port, 
struct phy_device *phy)
 {
        struct b53_device *dev = ds->priv;
        unsigned int cpu_port = ds->ports[port].cpu_dp->index;
+       int ret = 0;
        u16 pvlan;
 
+       if (dev->ops->irq_enable)
+               ret = dev->ops->irq_enable(dev, port);
+       if (ret)
+               return ret;
+
        /* Clear the Rx and Tx disable bits and set to no spanning tree */
        b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), 0);
 
@@ -536,6 +542,9 @@ void b53_disable_port(struct dsa_switch *ds, int port, 
struct phy_device *phy)
        b53_read8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), &reg);
        reg |= PORT_CTRL_RX_DISABLE | PORT_CTRL_TX_DISABLE;
        b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), reg);
+
+       if (dev->ops->irq_disable)
+               dev->ops->irq_disable(dev, port);
 }
 EXPORT_SYMBOL(b53_disable_port);
 
diff --git a/drivers/net/dsa/b53/b53_priv.h b/drivers/net/dsa/b53/b53_priv.h
index df149756c282..2980a5838f58 100644
--- a/drivers/net/dsa/b53/b53_priv.h
+++ b/drivers/net/dsa/b53/b53_priv.h
@@ -43,6 +43,8 @@ struct b53_io_ops {
        int (*write64)(struct b53_device *dev, u8 page, u8 reg, u64 value);
        int (*phy_read16)(struct b53_device *dev, int addr, int reg, u16 
*value);
        int (*phy_write16)(struct b53_device *dev, int addr, int reg, u16 
value);
+       int (*irq_enable)(struct b53_device *dev, int port);
+       void (*irq_disable)(struct b53_device *dev, int port);
 };
 
 enum {
-- 
2.17.1