diff options
| author | Rabin Vincent <rabin.vincent@stericsson.com> | 2010-01-05 09:56:34 +0530 |
|---|---|---|
| committer | John Rigby <john.rigby@linaro.org> | 2010-09-02 22:43:58 -0600 |
| commit | 2743b03f501aba54d82de224ae009eeafe0f3524 (patch) | |
| tree | 3877f7fe39d0afd6b61660d939f35ab9dbb8aa04 /arch/arm/common | |
| parent | 40def6c41b80179b61be381980b342ac3deea83b (diff) | |
gic: implement set_type
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Diffstat (limited to 'arch/arm/common')
| -rw-r--r-- | arch/arm/common/gic.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/arch/arm/common/gic.c b/arch/arm/common/gic.c index 337741f734a..06a9ff720d9 100644 --- a/arch/arm/common/gic.c +++ b/arch/arm/common/gic.c @@ -108,6 +108,42 @@ static void gic_unmask_irq(unsigned int irq) spin_unlock(&irq_controller_lock); } +static int gic_set_type(unsigned int irq, unsigned int type) +{ + void __iomem *base = gic_dist_base(irq); + u32 enablemask = 1 << (irq % 32); + u32 enableoff = (gic_irq(irq) / 32) * 4; + u32 confmask = 0x2 << ((irq % 16) * 2); + u32 confoff = (gic_irq(irq) / 16) * 4; + bool enabled = false; + u32 val; + + if (type != IRQ_TYPE_LEVEL_HIGH && type != IRQ_TYPE_EDGE_RISING) + return -EINVAL; + + spin_lock(&irq_controller_lock); + + val = readl(base + GIC_DIST_CONFIG + confoff); + if (type == IRQ_TYPE_LEVEL_HIGH) + val &= ~confmask; + else if (type == IRQ_TYPE_EDGE_RISING) + val |= confmask; + + if (readl(base + GIC_DIST_ENABLE_SET + enableoff) & enablemask) { + writel(enablemask, base + GIC_DIST_ENABLE_CLEAR + enableoff); + enabled = true; + } + + writel(val, base + GIC_DIST_CONFIG + confoff); + + if (enabled) + writel(enablemask, base + GIC_DIST_ENABLE_SET + enableoff); + + spin_unlock(&irq_controller_lock); + + return 0; +} + #ifdef CONFIG_SMP static int gic_set_cpu(unsigned int irq, const struct cpumask *mask_val) { @@ -161,6 +197,7 @@ static struct irq_chip gic_chip = { .ack = gic_ack_irq, .mask = gic_mask_irq, .unmask = gic_unmask_irq, + .set_type = gic_set_type, #ifdef CONFIG_SMP .set_affinity = gic_set_cpu, #endif |