@@ -17,6 +17,8 @@
#include <linux/syscore_ops.h>
#include <linux/io.h>
#include <linux/irq.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
#include <asm/exception.h>
@@ -49,6 +51,7 @@
*/
static int pxa_internal_irq_nr;
+static int pxa_irq_base;
static inline int cpu_has_ipr(void)
{
@@ -202,3 +205,74 @@ struct syscore_ops pxa_irq_syscore_ops = {
.suspend = pxa_irq_suspend,
.resume = pxa_irq_resume,
};
+
+#ifdef CONFIG_OF
+static struct irq_domain *pxa_irq_domain;
+
+static int pxa_irq_map(struct irq_domain *h, unsigned int virq,
+ irq_hw_number_t hw)
+{
+ int i = hw % 32;
+ int irq = virq - NR_IRQS_LEGACY;
+ void __iomem *base = irq_base(hw / 32);
+
+ /* initialize interrupt priority */
+ if (cpu_has_ipr())
+ __raw_writel(i | IPR_VALID, IRQ_BASE + IPR(i));
+
+ irq_set_chip_and_handler(irq, &pxa_internal_irq_chip,
+ handle_level_irq);
+ irq_set_chip_data(irq, base);
+ set_irq_flags(irq, IRQF_VALID);
+
+ return 0;
+}
+
+static struct irq_domain_ops pxa_irq_ops = {
+ .map = pxa_irq_map,
+ .xlate = irq_domain_xlate_onecell,
+};
+
+static const struct of_device_id intc_ids[] __initconst = {
+ { .compatible = "marvell,pxa-intc", },
+ {}
+};
+
+void __init pxa_dt_irq_init(int (*fn)(struct irq_data *, unsigned int))
+{
+ struct device_node *node;
+ const struct of_device_id *of_id;
+ struct pxa_intc_conf *conf;
+ int nr_irqs, ret;
+
+ node = of_find_matching_node(NULL, intc_ids);
+ if (!node) {
+ pr_err("Failed to find interrupt controller in arch-pxa\n");
+ return;
+ }
+ of_id = of_match_node(intc_ids, node);
+ conf = of_id->data;
+
+ ret = of_property_read_u32(node, "mrvl,intc-nr-irqs", &nr_irqs);
+ if (ret) {
+ pr_err("Not found mrvl,intc-nr-irqs property\n");
+ return;
+ }
+
+ pxa_irq_base = irq_alloc_descs(-1, 0, nr_irqs, 0);
+ if (pxa_irq_base < 0) {
+ pr_err("Failed to allocate IRQ numbers\n");
+ return;
+ }
+
+ pxa_irq_domain = irq_domain_add_legacy(node, nr_irqs, 0, 0,
+ &pxa_irq_ops, NULL);
+ if (!pxa_irq_domain)
+ panic("Unable to add PXA IRQ domain\n");
+
+ irq_set_default_host(pxa_irq_domain);
+ pxa_init_irq(nr_irqs, fn);
+
+ return;
+}
+#endif /* CONFIG_OF */
@@ -40,6 +40,8 @@
#define PECR_IE(n) ((1 << ((n) * 2)) << 28)
#define PECR_IS(n) ((1 << ((n) * 2)) << 29)
+extern void __init pxa_dt_irq_init(int (*fn)(struct irq_data *, unsigned int));
+
static DEFINE_PXA3_CKEN(pxa3xx_ffuart, FFUART, 14857000, 1);
static DEFINE_PXA3_CKEN(pxa3xx_btuart, BTUART, 14857000, 1);
static DEFINE_PXA3_CKEN(pxa3xx_stuart, STUART, 14857000, 1);
@@ -382,7 +384,7 @@ static void __init pxa_init_ext_wakeup_irq(int (*fn)(struct irq_data *,
pxa_ext_wakeup_chip.irq_set_wake = fn;
}
-void __init pxa3xx_init_irq(void)
+static void __init __pxa3xx_init_irq(void)
{
/* enable CP6 access */
u32 value;
@@ -390,10 +392,21 @@ void __init pxa3xx_init_irq(void)
value |= (1 << 6);
__asm__ __volatile__("mcr p15, 0, %0, c15, c1, 0\n": :"r"(value));
- pxa_init_irq(56, pxa3xx_set_wake);
pxa_init_ext_wakeup_irq(pxa3xx_set_wake);
}
+void __init pxa3xx_init_irq(void)
+{
+ __pxa3xx_init_irq();
+ pxa_init_irq(56, pxa3xx_set_wake);
+}
+
+void __init pxa3xx_dt_init_irq(void)
+{
+ __pxa3xx_init_irq();
+ pxa_dt_irq_init(pxa3xx_set_wake);
+}
+
static struct map_desc pxa3xx_io_desc[] __initdata = {
{ /* Mem Ctl */
.virtual = (unsigned long)SMEMC_VIRT,
Properly register on-chip interrupt using the irqdomain logic. The number of interrupts is taken from the devicetree node. Signed-off-by: Daniel Mack <zonque@gmail.com> --- arch/arm/mach-pxa/irq.c | 74 ++++++++++++++++++++++++++++++++++++++++++++++ arch/arm/mach-pxa/pxa3xx.c | 17 +++++++++-- 2 files changed, 89 insertions(+), 2 deletions(-)