From ab04dadb45a4150c9fd55b97fdd7397f4739a629 Mon Sep 17 00:00:00 2001
From: Minda Chen <minda.chen@starfivetech.com>
Date: Mon, 8 Jan 2024 19:06:01 +0800
Subject: [PATCH 024/116] PCI: microchip: Add num_events field to struct
 plda_pcie_rp

The number of events is different across platforms. In order to share
interrupt processing code, add a variable that defines the number of
events so that it can be set per-platform instead of hardcoding it.

Signed-off-by: Minda Chen <minda.chen@starfivetech.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
---
 drivers/pci/controller/plda/pcie-microchip-host.c | 8 +++++---
 drivers/pci/controller/plda/pcie-plda.h           | 1 +
 2 files changed, 6 insertions(+), 3 deletions(-)

--- a/drivers/pci/controller/plda/pcie-microchip-host.c
+++ b/drivers/pci/controller/plda/pcie-microchip-host.c
@@ -653,7 +653,7 @@ static void plda_handle_event(struct irq
 
 	events = mc_get_events(port);
 
-	for_each_set_bit(bit, &events, NUM_EVENTS)
+	for_each_set_bit(bit, &events, port->num_events)
 		generic_handle_domain_irq(port->event_domain, bit);
 
 	chained_irq_exit(chip, desc);
@@ -816,7 +816,8 @@ static int plda_pcie_init_irq_domains(st
 		return -EINVAL;
 	}
 
-	port->event_domain = irq_domain_add_linear(pcie_intc_node, NUM_EVENTS,
+	port->event_domain = irq_domain_add_linear(pcie_intc_node,
+						   port->num_events,
 						   &plda_event_domain_ops,
 						   port);
 	if (!port->event_domain) {
@@ -920,7 +921,7 @@ static int plda_init_interrupts(struct p
 	if (irq < 0)
 		return -ENODEV;
 
-	for (i = 0; i < NUM_EVENTS; i++) {
+	for (i = 0; i < port->num_events; i++) {
 		event_irq = irq_create_mapping(port->event_domain, i);
 		if (!event_irq) {
 			dev_err(dev, "failed to map hwirq %d\n", i);
@@ -1012,6 +1013,7 @@ static int mc_host_probe(struct platform
 
 	bridge_base_addr = port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
 	plda->bridge_addr = bridge_base_addr;
+	plda->num_events = NUM_EVENTS;
 
 	/* Allow enabling MSI by disabling MSI-X */
 	val = readl(bridge_base_addr + PCIE_PCI_IRQ_DW0);
--- a/drivers/pci/controller/plda/pcie-plda.h
+++ b/drivers/pci/controller/plda/pcie-plda.h
@@ -124,6 +124,7 @@ struct plda_pcie_rp {
 	raw_spinlock_t lock;
 	struct plda_msi msi;
 	void __iomem *bridge_addr;
+	int num_events;
 };
 
 void plda_pcie_setup_window(void __iomem *bridge_base_addr, u32 index,
