Merge branch 'net-dsa-microchip-ksz9477-enable-interrupt-for-internal-phy-link-detection'

Arun Ramadoss says:

====================
net: dsa: microchip: ksz9477: enable interrupt for internal phy link detection

This patch series implements the common interrupt handling for ksz9477 based
switches and lan937x. The ksz9477 and lan937x has similar interrupt registers
except ksz9477 has 4 port based interrupts whereas lan937x has 6 interrupts.
The patch moves the phy interrupt hanler implemented in lan937x_main.c to
ksz_common.c, along with the mdio_register functionality.
====================

Link: https://lore.kernel.org/r/20220922071028.18012-1-arun.ramadoss@microchip.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/dsa/microchip/ksz_common.h

@@ -45,6 +45,7 @@ struct ksz_chip_data {
 	int num_statics;
 	int cpu_ports;
 	int port_cnt;
+	u8 port_nirqs;
 	const struct ksz_dev_ops *ops;
 	bool phy_errata_9477;
 	bool ksz87xx_eee_link_erratum;
@@ -71,10 +72,13 @@ struct ksz_chip_data {
 
 struct ksz_irq {
 	u16 masked;
-	struct irq_chip chip;
+	u16 reg_mask;
+	u16 reg_status;
 	struct irq_domain *domain;
 	int nirqs;
+	int irq_num;
 	char name[16];
+	struct ksz_device *dev;
 };
 
 struct ksz_port {
@@ -572,6 +576,15 @@ static inline int is_lan937x(struct ksz_device *dev)
 #define P_MII_MAC_MODE			BIT(2)
 #define P_MII_SEL_M			0x3
 
+/* Interrupt */
+#define REG_SW_PORT_INT_STATUS__1	0x001B
+#define REG_SW_PORT_INT_MASK__1		0x001F
+
+#define REG_PORT_INT_STATUS		0x001B
+#define REG_PORT_INT_MASK		0x001F
+
+#define PORT_SRC_PHY_INT		1
+
 /* Regmap tables generation */
 #define KSZ_SPI_OP_RD		3
 #define KSZ_SPI_OP_WR		2

drivers/net/phy/micrel.c

@@ -3348,6 +3348,8 @@ static struct phy_driver ksphy_driver[] = {
 	.name		= "Microchip KSZ9477",
 	/* PHY_GBIT_FEATURES */
 	.config_init	= kszphy_config_init,
+	.config_intr	= kszphy_config_intr,
+	.handle_interrupt = kszphy_handle_interrupt,
 	.suspend	= genphy_suspend,
 	.resume		= genphy_resume,
 } };