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From:   Arun Ramadoss <arun.ramadoss@microchip.com>
To:     <linux-kernel@vger.kernel.org>, <netdev@vger.kernel.org>
CC:     <woojung.huh@microchip.com>, <UNGLinuxDriver@microchip.com>,
        <andrew@lunn.ch>, <vivien.didelot@gmail.com>,
        <f.fainelli@gmail.com>, <olteanv@gmail.com>, <davem@davemloft.net>,
        <edumazet@google.com>, <kuba@kernel.org>, <pabeni@redhat.com>,
        <linux@armlinux.org.uk>, <Tristram.Ha@microchip.com>,
        <arun.ramadoss@microchip.com>,
        <prasanna.vengateshan@microchip.com>, <hkallweit1@gmail.com>
Subject: [Patch net-next v2 1/5] net: dsa: microchip: determine number of port irq based on switch type
Date:   Wed, 14 Sep 2022 09:22:19 +0530
Message-ID: <20220914035223.31702-2-arun.ramadoss@microchip.com>
In-Reply-To: <20220914035223.31702-1-arun.ramadoss@microchip.com>
References: <20220914035223.31702-1-arun.ramadoss@microchip.com>
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Currently the number of port irqs is hard coded for the lan937x switch
as 6. In order to make the generic interrupt handler for ksz switches,
number of port irq supported by the switch is added to the
ksz_chip_data. It is 4 for ksz9477, 2 for ksz9897/9896 and 3 for ksz9567.

Signed-off-by: Arun Ramadoss <arun.ramadoss@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
---
 drivers/net/dsa/microchip/ksz_common.c   | 10 ++++++++++
 drivers/net/dsa/microchip/ksz_common.h   |  1 +
 drivers/net/dsa/microchip/lan937x_main.c |  4 +---
 3 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index fcaa71f66322..07283279c578 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -1168,6 +1168,7 @@ const struct ksz_chip_data ksz_switch_chips[] = {
 		.num_statics = 16,
 		.cpu_ports = 0x7F,	/* can be configured as cpu port */
 		.port_cnt = 7,		/* total physical port count */
+		.port_nirqs = 4,
 		.ops = &ksz9477_dev_ops,
 		.phy_errata_9477 = true,
 		.mib_names = ksz9477_mib_names,
@@ -1199,6 +1200,7 @@ const struct ksz_chip_data ksz_switch_chips[] = {
 		.num_statics = 16,
 		.cpu_ports = 0x3F,	/* can be configured as cpu port */
 		.port_cnt = 6,		/* total physical port count */
+		.port_nirqs = 2,
 		.ops = &ksz9477_dev_ops,
 		.phy_errata_9477 = true,
 		.mib_names = ksz9477_mib_names,
@@ -1230,6 +1232,7 @@ const struct ksz_chip_data ksz_switch_chips[] = {
 		.num_statics = 16,
 		.cpu_ports = 0x7F,	/* can be configured as cpu port */
 		.port_cnt = 7,		/* total physical port count */
+		.port_nirqs = 2,
 		.ops = &ksz9477_dev_ops,
 		.phy_errata_9477 = true,
 		.mib_names = ksz9477_mib_names,
@@ -1259,6 +1262,7 @@ const struct ksz_chip_data ksz_switch_chips[] = {
 		.num_statics = 16,
 		.cpu_ports = 0x07,	/* can be configured as cpu port */
 		.port_cnt = 3,		/* total port count */
+		.port_nirqs = 2,
 		.ops = &ksz9477_dev_ops,
 		.mib_names = ksz9477_mib_names,
 		.mib_cnt = ARRAY_SIZE(ksz9477_mib_names),
@@ -1283,6 +1287,7 @@ const struct ksz_chip_data ksz_switch_chips[] = {
 		.num_statics = 16,
 		.cpu_ports = 0x7F,	/* can be configured as cpu port */
 		.port_cnt = 7,		/* total physical port count */
+		.port_nirqs = 3,
 		.ops = &ksz9477_dev_ops,
 		.phy_errata_9477 = true,
 		.mib_names = ksz9477_mib_names,
@@ -1312,6 +1317,7 @@ const struct ksz_chip_data ksz_switch_chips[] = {
 		.num_statics = 256,
 		.cpu_ports = 0x10,	/* can be configured as cpu port */
 		.port_cnt = 5,		/* total physical port count */
+		.port_nirqs = 6,
 		.ops = &lan937x_dev_ops,
 		.mib_names = ksz9477_mib_names,
 		.mib_cnt = ARRAY_SIZE(ksz9477_mib_names),
@@ -1335,6 +1341,7 @@ const struct ksz_chip_data ksz_switch_chips[] = {
 		.num_statics = 256,
 		.cpu_ports = 0x30,	/* can be configured as cpu port */
 		.port_cnt = 6,		/* total physical port count */
+		.port_nirqs = 6,
 		.ops = &lan937x_dev_ops,
 		.mib_names = ksz9477_mib_names,
 		.mib_cnt = ARRAY_SIZE(ksz9477_mib_names),
@@ -1358,6 +1365,7 @@ const struct ksz_chip_data ksz_switch_chips[] = {
 		.num_statics = 256,
 		.cpu_ports = 0x30,	/* can be configured as cpu port */
 		.port_cnt = 8,		/* total physical port count */
+		.port_nirqs = 6,
 		.ops = &lan937x_dev_ops,
 		.mib_names = ksz9477_mib_names,
 		.mib_cnt = ARRAY_SIZE(ksz9477_mib_names),
@@ -1385,6 +1393,7 @@ const struct ksz_chip_data ksz_switch_chips[] = {
 		.num_statics = 256,
 		.cpu_ports = 0x38,	/* can be configured as cpu port */
 		.port_cnt = 5,		/* total physical port count */
+		.port_nirqs = 6,
 		.ops = &lan937x_dev_ops,
 		.mib_names = ksz9477_mib_names,
 		.mib_cnt = ARRAY_SIZE(ksz9477_mib_names),
@@ -1412,6 +1421,7 @@ const struct ksz_chip_data ksz_switch_chips[] = {
 		.num_statics = 256,
 		.cpu_ports = 0x30,	/* can be configured as cpu port */
 		.port_cnt = 8,		/* total physical port count */
+		.port_nirqs = 6,
 		.ops = &lan937x_dev_ops,
 		.mib_names = ksz9477_mib_names,
 		.mib_cnt = ARRAY_SIZE(ksz9477_mib_names),
diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h
index 6203dcd8c8f7..baa1e1bc1b7c 100644
--- a/drivers/net/dsa/microchip/ksz_common.h
+++ b/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;
diff --git a/drivers/net/dsa/microchip/lan937x_main.c b/drivers/net/dsa/microchip/lan937x_main.c
index 9b6760b1e572..7136d9c55315 100644
--- a/drivers/net/dsa/microchip/lan937x_main.c
+++ b/drivers/net/dsa/microchip/lan937x_main.c
@@ -20,8 +20,6 @@
 #include "ksz_common.h"
 #include "lan937x.h"
 
-#define LAN937x_PNIRQS 6
-
 static int lan937x_cfg(struct ksz_device *dev, u32 addr, u8 bits, bool set)
 {
 	return regmap_update_bits(dev->regmap[0], addr, bits, set ? bits : 0);
@@ -697,7 +695,7 @@ static int lan937x_pirq_setup(struct ksz_device *dev, u8 p)
 	int ret, irq;
 	int irq_num;
 
-	port->pirq.nirqs = LAN937x_PNIRQS;
+	port->pirq.nirqs = dev->info->port_nirqs;
 	port->pirq.domain = irq_domain_add_simple(dev->dev->of_node,
 						  port->pirq.nirqs, 0,
 						  &lan937x_pirq_domain_ops,
-- 
2.36.1