diff options
| author | John Crispin <blogic@openwrt.org> | 2012-08-16 08:09:20 +0000 |
|---|---|---|
| committer | John Crispin <blogic@openwrt.org> | 2012-08-23 00:08:17 +0200 |
| commit | c2c9c788b91218bccbb9ac31539ffa577fe502bf (patch) | |
| tree | c2e273e08a8c567d7f3909921e581451dcf313f7 | |
| parent | 61fa969f27ec58296544bf94d058f3aa704cb8d9 (diff) | |
MIPS: lantiq: timer irq can be different to 7
The SVIP SoC has its timer IRQ on a different IRQ than 7. Fix up the irq
code to be able to handle this.
Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4229/
| -rw-r--r-- | arch/mips/lantiq/irq.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/arch/mips/lantiq/irq.c b/arch/mips/lantiq/irq.c index a2699a70322..0cec43dc3f6 100644 --- a/arch/mips/lantiq/irq.c +++ b/arch/mips/lantiq/irq.c @@ -84,6 +84,7 @@ static unsigned short ltq_eiu_irq[MAX_EIU] = { static int exin_avail; static void __iomem *ltq_icu_membase[MAX_IM]; static void __iomem *ltq_eiu_membase; +static struct irq_domain *ltq_domain; void ltq_disable_irq(struct irq_data *d) { @@ -219,10 +220,14 @@ DEFINE_HWx_IRQDISPATCH(2) DEFINE_HWx_IRQDISPATCH(3) DEFINE_HWx_IRQDISPATCH(4) +#if MIPS_CPU_TIMER_IRQ == 7 static void ltq_hw5_irqdispatch(void) { do_IRQ(MIPS_CPU_TIMER_IRQ); } +#else +DEFINE_HWx_IRQDISPATCH(5) +#endif #ifdef CONFIG_MIPS_MT_SMP void __init arch_init_ipiirq(int irq, struct irqaction *action) @@ -270,7 +275,7 @@ asmlinkage void plat_irq_dispatch(void) unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM; unsigned int i; - if (pending & CAUSEF_IP7) { + if ((MIPS_CPU_TIMER_IRQ == 7) && (pending & CAUSEF_IP7)) { do_IRQ(MIPS_CPU_TIMER_IRQ); goto out; } else { @@ -376,7 +381,7 @@ int __init icu_of_init(struct device_node *node, struct device_node *parent) set_vi_handler(7, ltq_hw5_irqdispatch); } - irq_domain_add_linear(node, + ltq_domain = irq_domain_add_linear(node, (MAX_IM * INT_NUM_IM_OFFSET) + MIPS_CPU_IRQ_CASCADE, &irq_domain_ops, 0); @@ -401,12 +406,20 @@ int __init icu_of_init(struct device_node *node, struct device_node *parent) /* tell oprofile which irq to use */ cp0_perfcount_irq = LTQ_PERF_IRQ; + + /* + * if the timer irq is not one of the mips irqs we need to + * create a mapping + */ + if (MIPS_CPU_TIMER_IRQ != 7) + irq_create_mapping(ltq_domain, MIPS_CPU_TIMER_IRQ); + return 0; } unsigned int __cpuinit get_c0_compare_int(void) { - return CP0_LEGACY_COMPARE_IRQ; + return MIPS_CPU_TIMER_IRQ; } static struct of_device_id __initdata of_irq_ids[] = { |