diff options
author | Shawn Guo <shawn.guo@linaro.org> | 2012-06-13 10:55:46 +0800 |
---|---|---|
committer | Shawn Guo <shawn.guo@linaro.org> | 2012-07-01 21:57:37 +0800 |
commit | 544496ab5cbdae312351da4c742ae70cab08dbf2 (patch) | |
tree | 4616bfbe170dcef54dc9673e69d170d04f84d1de /arch/arm/plat-mxc | |
parent | f3eac29da1f6a477722b56ff00228e8a13f8f6c6 (diff) | |
download | linux-544496ab5cbdae312351da4c742ae70cab08dbf2.tar.gz linux-544496ab5cbdae312351da4c742ae70cab08dbf2.tar.bz2 linux-544496ab5cbdae312351da4c742ae70cab08dbf2.zip |
ARM: imx: move irq_domain_add_legacy call into avic driver
Move irq_domain_add_legacy call from imx27-dt.c into avic init function
and have the avic driver adopt irqdomain support for both DT and non-DT
boot.
Now avic init function calls irq_alloc_descs to get irq_base and adds
a lenacy irqdomain with the irq_base, so that the mapping between avic
irq and Linux irq number can be handled by irqdomain.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Dong Aisheng <dong.aisheng@linaro.org>
Diffstat (limited to 'arch/arm/plat-mxc')
-rw-r--r-- | arch/arm/plat-mxc/avic.c | 32 |
1 files changed, 25 insertions, 7 deletions
diff --git a/arch/arm/plat-mxc/avic.c b/arch/arm/plat-mxc/avic.c index 689f81f9593b..e612cc1edede 100644 --- a/arch/arm/plat-mxc/avic.c +++ b/arch/arm/plat-mxc/avic.c @@ -19,7 +19,9 @@ #include <linux/module.h> #include <linux/irq.h> +#include <linux/irqdomain.h> #include <linux/io.h> +#include <linux/of.h> #include <mach/common.h> #include <asm/mach/irq.h> #include <asm/exception.h> @@ -50,15 +52,19 @@ #define AVIC_NUM_IRQS 64 void __iomem *avic_base; +static struct irq_domain *domain; static u32 avic_saved_mask_reg[2]; #ifdef CONFIG_MXC_IRQ_PRIOR static int avic_irq_set_priority(unsigned char irq, unsigned char prio) { + struct irq_data *d = irq_get_irq_data(irq); unsigned int temp; unsigned int mask = 0x0F << irq % 8 * 4; + irq = d->hwirq; + if (irq >= AVIC_NUM_IRQS) return -EINVAL; @@ -75,8 +81,11 @@ static int avic_irq_set_priority(unsigned char irq, unsigned char prio) #ifdef CONFIG_FIQ static int avic_set_irq_fiq(unsigned int irq, unsigned int type) { + struct irq_data *d = irq_get_irq_data(irq); unsigned int irqt; + irq = d->hwirq; + if (irq >= AVIC_NUM_IRQS) return -EINVAL; @@ -108,7 +117,7 @@ static void avic_irq_suspend(struct irq_data *d) { struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); struct irq_chip_type *ct = gc->chip_types; - int idx = gc->irq_base >> 5; + int idx = d->hwirq >> 5; avic_saved_mask_reg[idx] = __raw_readl(avic_base + ct->regs.mask); __raw_writel(gc->wake_active, avic_base + ct->regs.mask); @@ -118,7 +127,7 @@ static void avic_irq_resume(struct irq_data *d) { struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); struct irq_chip_type *ct = gc->chip_types; - int idx = gc->irq_base >> 5; + int idx = d->hwirq >> 5; __raw_writel(avic_saved_mask_reg[idx], avic_base + ct->regs.mask); } @@ -128,11 +137,10 @@ static void avic_irq_resume(struct irq_data *d) #define avic_irq_resume NULL #endif -static __init void avic_init_gc(unsigned int irq_start) +static __init void avic_init_gc(int idx, unsigned int irq_start) { struct irq_chip_generic *gc; struct irq_chip_type *ct; - int idx = irq_start >> 5; gc = irq_alloc_generic_chip("mxc-avic", 1, irq_start, avic_base, handle_level_irq); @@ -161,7 +169,7 @@ asmlinkage void __exception_irq_entry avic_handle_irq(struct pt_regs *regs) if (nivector == 0xffff) break; - handle_IRQ(nivector, regs); + handle_IRQ(irq_find_mapping(domain, nivector), regs); } while (1); } @@ -172,6 +180,8 @@ asmlinkage void __exception_irq_entry avic_handle_irq(struct pt_regs *regs) */ void __init mxc_init_irq(void __iomem *irqbase) { + struct device_node *np; + int irq_base; int i; avic_base = irqbase; @@ -190,8 +200,16 @@ void __init mxc_init_irq(void __iomem *irqbase) __raw_writel(0, avic_base + AVIC_INTTYPEH); __raw_writel(0, avic_base + AVIC_INTTYPEL); - for (i = 0; i < AVIC_NUM_IRQS; i += 32) - avic_init_gc(i); + irq_base = irq_alloc_descs(-1, 0, AVIC_NUM_IRQS, numa_node_id()); + WARN_ON(irq_base < 0); + + np = of_find_compatible_node(NULL, NULL, "fsl,avic"); + domain = irq_domain_add_legacy(np, AVIC_NUM_IRQS, irq_base, 0, + &irq_domain_simple_ops, NULL); + WARN_ON(!domain); + + for (i = 0; i < AVIC_NUM_IRQS / 32; i++, irq_base += 32) + avic_init_gc(i, irq_base); /* Set default priority value (0) for all IRQ's */ for (i = 0; i < 8; i++) |