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>
diff --git a/arch/arm/plat-mxc/avic.c b/arch/arm/plat-mxc/avic.c
index 689f81f..e612cc1 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 @@
#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 @@
{
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 @@
{
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 @@
#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 @@
if (nivector == 0xffff)
break;
- handle_IRQ(nivector, regs);
+ handle_IRQ(irq_find_mapping(domain, nivector), regs);
} while (1);
}
@@ -172,6 +180,8 @@
*/
void __init mxc_init_irq(void __iomem *irqbase)
{
+ struct device_node *np;
+ int irq_base;
int i;
avic_base = irqbase;
@@ -190,8 +200,16 @@
__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++)