[PATCH V2 01/24] MIPS: Always use IRQ domains for CPU IRQs

From: Andrew Bresticker
Date: Thu Sep 18 2014 - 17:52:18 EST


Use an IRQ domain for the 8 CPU IRQs in both the DT and non-DT cases.

Signed-off-by: Andrew Bresticker <abrestic@xxxxxxxxxxxx>
Reviewed-by: Qais Yousef <qais.yousef@xxxxxxxxxx>
Tested-by: Qais Yousef <qais.yousef@xxxxxxxxxx>
---
No changes from v1.
---
arch/mips/Kconfig | 1 +
arch/mips/kernel/irq_cpu.c | 36 +++++++++++-------------------------
2 files changed, 12 insertions(+), 25 deletions(-)

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 900c7e5..9fc335c 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1051,6 +1051,7 @@ config MIPS_HUGE_TLB_SUPPORT

config IRQ_CPU
bool
+ select IRQ_DOMAIN

config IRQ_CPU_RM7K
bool
diff --git a/arch/mips/kernel/irq_cpu.c b/arch/mips/kernel/irq_cpu.c
index e498f2b..b097f7d 100644
--- a/arch/mips/kernel/irq_cpu.c
+++ b/arch/mips/kernel/irq_cpu.c
@@ -94,28 +94,6 @@ static struct irq_chip mips_mt_cpu_irq_controller = {
.irq_eoi = unmask_mips_irq,
};

-void __init mips_cpu_irq_init(void)
-{
- int irq_base = MIPS_CPU_IRQ_BASE;
- int i;
-
- /* Mask interrupts. */
- clear_c0_status(ST0_IM);
- clear_c0_cause(CAUSEF_IP);
-
- /* Software interrupts are used for MT/CMT IPI */
- for (i = irq_base; i < irq_base + 2; i++)
- irq_set_chip_and_handler(i, cpu_has_mipsmt ?
- &mips_mt_cpu_irq_controller :
- &mips_cpu_irq_controller,
- handle_percpu_irq);
-
- for (i = irq_base + 2; i < irq_base + 8; i++)
- irq_set_chip_and_handler(i, &mips_cpu_irq_controller,
- handle_percpu_irq);
-}
-
-#ifdef CONFIG_IRQ_DOMAIN
static int mips_cpu_intc_map(struct irq_domain *d, unsigned int irq,
irq_hw_number_t hw)
{
@@ -138,8 +116,7 @@ static const struct irq_domain_ops mips_cpu_intc_irq_domain_ops = {
.xlate = irq_domain_xlate_onecell,
};

-int __init mips_cpu_intc_init(struct device_node *of_node,
- struct device_node *parent)
+static void __init __mips_cpu_irq_init(struct device_node *of_node)
{
struct irq_domain *domain;

@@ -151,7 +128,16 @@ int __init mips_cpu_intc_init(struct device_node *of_node,
&mips_cpu_intc_irq_domain_ops, NULL);
if (!domain)
panic("Failed to add irqdomain for MIPS CPU");
+}
+
+void __init mips_cpu_irq_init(void)
+{
+ __mips_cpu_irq_init(NULL);
+}

+int __init mips_cpu_intc_init(struct device_node *of_node,
+ struct device_node *parent)
+{
+ __mips_cpu_irq_init(of_node);
return 0;
}
-#endif /* CONFIG_IRQ_DOMAIN */
--
2.1.0.rc2.206.gedb03e5

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