irqchip/ocelot: Add support for Jaguar2 platforms

This patch extends irqchip driver for ocelot to be used with an other
vcoreiii base platform: Jaguar2.

Based on a larger patch from Lars Povlsen <lars.povlsen@microchip.com>

Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20201125103206.136498-7-gregory.clement@bootlin.com

diff --git a/drivers/irqchip/irq-mscc-ocelot.c b/drivers/irqchip/irq-mscc-ocelot.c
index da5a0ad..8235d98 100644 (file)
--- a/drivers/irqchip/irq-mscc-ocelot.c
+++ b/drivers/irqchip/irq-mscc-ocelot.c
@@ -63,6 +63,17 @@ static struct chip_props luton_props = {
        .n_irq                  = 28,
 };
 
+static struct chip_props jaguar2_props = {
+       .flags                  = FLAGS_HAS_TRIGGER,
+       .reg_off_sticky         = 0x10,
+       .reg_off_ena            = 0x18,
+       .reg_off_ena_clr        = 0x1c,
+       .reg_off_ena_set        = 0x20,
+       .reg_off_ident          = 0x38,
+       .reg_off_trigger        = 0x5c,
+       .n_irq                  = 29,
+};
+
 static void ocelot_irq_unmask(struct irq_data *data)
 {
        struct irq_chip_generic *gc = irq_data_get_irq_chip_data(data);
@@ -197,3 +208,11 @@ static int __init luton_irq_init(struct device_node *node,
 }
 
 IRQCHIP_DECLARE(luton_icpu, "mscc,luton-icpu-intr", luton_irq_init);
+
+static int __init jaguar2_irq_init(struct device_node *node,
+                                  struct device_node *parent)
+{
+       return vcoreiii_irq_init(node, parent, &jaguar2_props);
+}
+
+IRQCHIP_DECLARE(jaguar2_icpu, "mscc,jaguar2-icpu-intr", jaguar2_irq_init);