From: Guo Ren <[email protected]> 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 <[email protected]> --- 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
