#include <linux/of_address.h>
#include <linux/of_irq.h>
+#include <asm/exception.h>
+#include <asm/mach/irq.h>
+
#include <mach/irqs.h>
#ifdef CONFIG_CPU_MMP2
#include <mach/pm-pxa910.h>
#endif
+#include "irqchip.h"
+
#define MAX_ICU_NR 16
+#define PJ1_INT_SEL 0x10c
+#define PJ4_INT_SEL 0x104
+
+/* bit fields in PJ1_INT_SEL and PJ4_INT_SEL */
+#define SEL_INT_PENDING (1 << 6)
+#define SEL_INT_NUM_MASK 0x3f
+
struct icu_chip_data {
int nr_irqs;
unsigned int virq_base;
unsigned int conf_mask;
};
-void __iomem *mmp_icu_base;
+static void __iomem *mmp_icu_base;
static struct icu_chip_data icu_data[MAX_ICU_NR];
static int max_icu_nr;
.conf_mask = 0x7f,
};
+static asmlinkage void __exception_irq_entry
+mmp_handle_irq(struct pt_regs *regs)
+{
+ int irq, hwirq;
+
+ hwirq = readl_relaxed(mmp_icu_base + PJ1_INT_SEL);
+ if (!(hwirq & SEL_INT_PENDING))
+ return;
+ hwirq &= SEL_INT_NUM_MASK;
+ irq = irq_find_mapping(icu_data[0].domain, hwirq);
+ handle_IRQ(irq, regs);
+}
+
+static asmlinkage void __exception_irq_entry
+mmp2_handle_irq(struct pt_regs *regs)
+{
+ int irq, hwirq;
+
+ hwirq = readl_relaxed(mmp_icu_base + PJ4_INT_SEL);
+ if (!(hwirq & SEL_INT_PENDING))
+ return;
+ hwirq &= SEL_INT_NUM_MASK;
+ irq = irq_find_mapping(icu_data[0].domain, hwirq);
+ handle_IRQ(irq, regs);
+}
+
/* MMP (ARMv5) */
void __init icu_init_irq(void)
{
set_irq_flags(irq, IRQF_VALID);
}
irq_set_default_host(icu_data[0].domain);
+ set_handle_irq(mmp_handle_irq);
#ifdef CONFIG_CPU_PXA910
icu_irq_chip.irq_set_wake = pxa910_set_wake;
#endif
set_irq_flags(irq, IRQF_VALID);
}
irq_set_default_host(icu_data[0].domain);
+ set_handle_irq(mmp2_handle_irq);
#ifdef CONFIG_CPU_MMP2
icu_irq_chip.irq_set_wake = mmp2_set_wake;
#endif
}
#ifdef CONFIG_OF
-static const struct of_device_id intc_ids[] __initconst = {
- { .compatible = "mrvl,mmp-intc", .data = &mmp_conf },
- { .compatible = "mrvl,mmp2-intc", .data = &mmp2_conf },
- {}
-};
-
-static const struct of_device_id mmp_mux_irq_match[] __initconst = {
- { .compatible = "mrvl,mmp2-mux-intc" },
- {}
-};
-
-int __init mmp2_mux_init(struct device_node *parent)
+static int __init mmp_init_bases(struct device_node *node)
{
- struct device_node *node;
- const struct of_device_id *of_id;
- struct resource res;
- int i, irq_base, ret, irq;
- u32 nr_irqs, mfp_irq;
+ int ret, nr_irqs, irq, i = 0;
- node = parent;
- max_icu_nr = 1;
- for (i = 1; i < MAX_ICU_NR; i++) {
- node = of_find_matching_node(node, mmp_mux_irq_match);
- if (!node)
- break;
- of_id = of_match_node(&mmp_mux_irq_match[0], node);
- ret = of_property_read_u32(node, "mrvl,intc-nr-irqs",
- &nr_irqs);
- if (ret) {
- pr_err("Not found mrvl,intc-nr-irqs property\n");
- ret = -EINVAL;
- goto err;
- }
- ret = of_address_to_resource(node, 0, &res);
- if (ret < 0) {
- pr_err("Not found reg property\n");
- ret = -EINVAL;
- goto err;
- }
- icu_data[i].reg_status = mmp_icu_base + res.start;
- ret = of_address_to_resource(node, 1, &res);
- if (ret < 0) {
- pr_err("Not found reg property\n");
- ret = -EINVAL;
- goto err;
- }
- icu_data[i].reg_mask = mmp_icu_base + res.start;
- icu_data[i].cascade_irq = irq_of_parse_and_map(node, 0);
- if (!icu_data[i].cascade_irq) {
- ret = -EINVAL;
- goto err;
- }
+ 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 ret;
+ }
- irq_base = irq_alloc_descs(-1, 0, nr_irqs, 0);
- if (irq_base < 0) {
- pr_err("Failed to allocate IRQ numbers for mux intc\n");
- ret = irq_base;
+ mmp_icu_base = of_iomap(node, 0);
+ if (!mmp_icu_base) {
+ pr_err("Failed to get interrupt controller register\n");
+ return -ENOMEM;
+ }
+
+ icu_data[0].virq_base = 0;
+ icu_data[0].domain = irq_domain_add_linear(node, nr_irqs,
+ &mmp_irq_domain_ops,
+ &icu_data[0]);
+ for (irq = 0; irq < nr_irqs; irq++) {
+ ret = irq_create_mapping(icu_data[0].domain, irq);
+ if (!ret) {
+ pr_err("Failed to mapping hwirq\n");
goto err;
}
- if (!of_property_read_u32(node, "mrvl,clr-mfp-irq",
- &mfp_irq)) {
- icu_data[i].clr_mfp_irq_base = irq_base;
- icu_data[i].clr_mfp_hwirq = mfp_irq;
- }
- irq_set_chained_handler(icu_data[i].cascade_irq,
- icu_mux_irq_demux);
- icu_data[i].nr_irqs = nr_irqs;
- icu_data[i].virq_base = irq_base;
- icu_data[i].domain = irq_domain_add_legacy(node, nr_irqs,
- irq_base, 0,
- &mmp_irq_domain_ops,
- &icu_data[i]);
- for (irq = irq_base; irq < irq_base + nr_irqs; irq++)
- icu_mask_irq(irq_get_irq_data(irq));
+ if (!irq)
+ icu_data[0].virq_base = ret;
}
- max_icu_nr = i;
+ icu_data[0].nr_irqs = nr_irqs;
return 0;
err:
- of_node_put(node);
- max_icu_nr = i;
- return ret;
+ if (icu_data[0].virq_base) {
+ for (i = 0; i < irq; i++)
+ irq_dispose_mapping(icu_data[0].virq_base + i);
+ }
+ irq_domain_remove(icu_data[0].domain);
+ iounmap(mmp_icu_base);
+ return -EINVAL;
}
-void __init mmp_dt_irq_init(void)
+static int __init mmp_of_init(struct device_node *node,
+ struct device_node *parent)
{
- struct device_node *node;
- const struct of_device_id *of_id;
- struct mmp_intc_conf *conf;
- int nr_irqs, irq_base, ret, irq;
-
- node = of_find_matching_node(NULL, intc_ids);
- if (!node) {
- pr_err("Failed to find interrupt controller in arch-mmp\n");
- return;
- }
- of_id = of_match_node(intc_ids, node);
- conf = of_id->data;
+ int ret;
- ret = of_property_read_u32(node, "mrvl,intc-nr-irqs", &nr_irqs);
+ ret = mmp_init_bases(node);
+ if (ret < 0)
+ return ret;
+
+ icu_data[0].conf_enable = mmp_conf.conf_enable;
+ icu_data[0].conf_disable = mmp_conf.conf_disable;
+ icu_data[0].conf_mask = mmp_conf.conf_mask;
+ irq_set_default_host(icu_data[0].domain);
+ set_handle_irq(mmp_handle_irq);
+ max_icu_nr = 1;
+ return 0;
+}
+IRQCHIP_DECLARE(mmp_intc, "mrvl,mmp-intc", mmp_of_init);
+
+static int __init mmp2_of_init(struct device_node *node,
+ struct device_node *parent)
+{
+ int ret;
+
+ ret = mmp_init_bases(node);
+ if (ret < 0)
+ return ret;
+
+ icu_data[0].conf_enable = mmp2_conf.conf_enable;
+ icu_data[0].conf_disable = mmp2_conf.conf_disable;
+ icu_data[0].conf_mask = mmp2_conf.conf_mask;
+ irq_set_default_host(icu_data[0].domain);
+ set_handle_irq(mmp2_handle_irq);
+ max_icu_nr = 1;
+ return 0;
+}
+IRQCHIP_DECLARE(mmp2_intc, "mrvl,mmp2-intc", mmp2_of_init);
+
+static int __init mmp2_mux_of_init(struct device_node *node,
+ struct device_node *parent)
+{
+ struct resource res;
+ int i, ret, irq, j = 0;
+ u32 nr_irqs, mfp_irq;
+
+ if (!parent)
+ return -ENODEV;
+
+ i = max_icu_nr;
+ 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;
+ return -EINVAL;
}
-
- mmp_icu_base = of_iomap(node, 0);
- if (!mmp_icu_base) {
- pr_err("Failed to get interrupt controller register\n");
- return;
+ ret = of_address_to_resource(node, 0, &res);
+ if (ret < 0) {
+ pr_err("Not found reg property\n");
+ return -EINVAL;
}
-
- irq_base = irq_alloc_descs(-1, 0, nr_irqs - NR_IRQS_LEGACY, 0);
- if (irq_base < 0) {
- pr_err("Failed to allocate IRQ numbers\n");
- goto err;
- } else if (irq_base != NR_IRQS_LEGACY) {
- pr_err("ICU's irqbase should be started from 0\n");
- goto err;
+ icu_data[i].reg_status = mmp_icu_base + res.start;
+ ret = of_address_to_resource(node, 1, &res);
+ if (ret < 0) {
+ pr_err("Not found reg property\n");
+ return -EINVAL;
}
- icu_data[0].conf_enable = conf->conf_enable;
- icu_data[0].conf_disable = conf->conf_disable;
- icu_data[0].conf_mask = conf->conf_mask;
- icu_data[0].nr_irqs = nr_irqs;
- icu_data[0].virq_base = 0;
- icu_data[0].domain = irq_domain_add_legacy(node, nr_irqs, 0, 0,
+ icu_data[i].reg_mask = mmp_icu_base + res.start;
+ icu_data[i].cascade_irq = irq_of_parse_and_map(node, 0);
+ if (!icu_data[i].cascade_irq)
+ return -EINVAL;
+
+ icu_data[i].virq_base = 0;
+ icu_data[i].domain = irq_domain_add_linear(node, nr_irqs,
&mmp_irq_domain_ops,
- &icu_data[0]);
- irq_set_default_host(icu_data[0].domain);
- for (irq = 0; irq < nr_irqs; irq++)
- icu_mask_irq(irq_get_irq_data(irq));
- mmp2_mux_init(node);
- return;
+ &icu_data[i]);
+ for (irq = 0; irq < nr_irqs; irq++) {
+ ret = irq_create_mapping(icu_data[i].domain, irq);
+ if (!ret) {
+ pr_err("Failed to mapping hwirq\n");
+ goto err;
+ }
+ if (!irq)
+ icu_data[i].virq_base = ret;
+ }
+ icu_data[i].nr_irqs = nr_irqs;
+ if (!of_property_read_u32(node, "mrvl,clr-mfp-irq",
+ &mfp_irq)) {
+ icu_data[i].clr_mfp_irq_base = icu_data[i].virq_base;
+ icu_data[i].clr_mfp_hwirq = mfp_irq;
+ }
+ irq_set_chained_handler(icu_data[i].cascade_irq,
+ icu_mux_irq_demux);
+ max_icu_nr++;
+ return 0;
err:
- iounmap(mmp_icu_base);
+ if (icu_data[i].virq_base) {
+ for (j = 0; j < irq; j++)
+ irq_dispose_mapping(icu_data[i].virq_base + j);
+ }
+ irq_domain_remove(icu_data[i].domain);
+ return -EINVAL;
}
+IRQCHIP_DECLARE(mmp2_mux_intc, "mrvl,mmp2-mux-intc", mmp2_mux_of_init);
#endif
projects / cascardo / linux.git / commitdiff