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Subject[PATCH 10/10] irqchip/csky: Add support-vector-irq for apb-intc
Date
From: Guo Ren <ren_guo@c-sky.com>

Some socs don't provide pending registers, so we must make the interrupt
controller working at vector mode. Add csky,support-vector-irq to
support this mode in dts.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
---
drivers/irqchip/irq-csky-apb-intc.c | 20 ++++++++++++++++++--
1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/drivers/irqchip/irq-csky-apb-intc.c b/drivers/irqchip/irq-csky-apb-intc.c
index ae4c59b..14ef206 100644
--- a/drivers/irqchip/irq-csky-apb-intc.c
+++ b/drivers/irqchip/irq-csky-apb-intc.c
@@ -302,10 +302,17 @@ static void ck_irq_handler(struct pt_regs *regs)
pr_err("%s: none irq pending!\n", __func__);
}

+static void ck_vec_irq_handler(struct pt_regs *regs)
+{
+ unsigned long vector = (mfcr("psr") >> 16) & 0xff;
+
+ handle_domain_irq(root_domain, vector - 32, regs);
+}
+
static int __init
ck_intc_init(struct device_node *node, struct device_node *parent)
{
- int ret;
+ int ret, i;

ret = ck_intc_init_comm(node, parent);
if (ret)
@@ -323,7 +330,16 @@ ck_intc_init(struct device_node *node, struct device_node *parent)

setup_irq_channel(0x00010203, reg_base + CK_INTC_SOURCE);

- set_handle_irq(ck_irq_handler);
+ if (of_find_property(node, "csky,support-vector-irq", NULL)) {
+ set_handle_irq(ck_vec_irq_handler);
+
+ for (i = 32; i < 128; i++)
+ VEC_INIT(i, csky_irq);
+
+ writel(0, reg_base + CK_INTC_ICR);
+ } else {
+ set_handle_irq(ck_irq_handler);
+ }

return 0;
}
--
2.7.4
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