irqchip/ocelot: Add support for Serval platforms

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

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/20201125103206.136498-6-gregory.clement@bootlin.com

diff --git a/drivers/irqchip/irq-mscc-ocelot.c b/drivers/irqchip/irq-mscc-ocelot.c
index 496f955..da5a0ad 100644 (file)
--- a/drivers/irqchip/irq-mscc-ocelot.c
+++ b/drivers/irqchip/irq-mscc-ocelot.c
@@ -41,6 +41,17 @@ static struct chip_props ocelot_props = {
        .n_irq                  = 24,
 };
 
+static struct chip_props serval_props = {
+       .flags                  = FLAGS_HAS_TRIGGER,
+       .reg_off_sticky         = 0xc,
+       .reg_off_ena            = 0x14,
+       .reg_off_ena_clr        = 0x18,
+       .reg_off_ena_set        = 0x1c,
+       .reg_off_ident          = 0x20,
+       .reg_off_trigger        = 0x4,
+       .n_irq                  = 24,
+};
+
 static struct chip_props luton_props = {
        .flags                  = FLAGS_NEED_INIT_ENABLE,
        .reg_off_sticky         = 0,
@@ -171,6 +182,14 @@ static int __init ocelot_irq_init(struct device_node *node,
 
 IRQCHIP_DECLARE(ocelot_icpu, "mscc,ocelot-icpu-intr", ocelot_irq_init);
 
+static int __init serval_irq_init(struct device_node *node,
+                                 struct device_node *parent)
+{
+       return vcoreiii_irq_init(node, parent, &serval_props);
+}
+
+IRQCHIP_DECLARE(serval_icpu, "mscc,serval-icpu-intr", serval_irq_init);
+
 static int __init luton_irq_init(struct device_node *node,
                                 struct device_node *parent)
 {