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path: root/drivers/sh/intc/core.c
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Diffstat (limited to 'drivers/sh/intc/core.c')
-rw-r--r--drivers/sh/intc/core.c96
1 files changed, 65 insertions, 31 deletions
diff --git a/drivers/sh/intc/core.c b/drivers/sh/intc/core.c
index c6ca115c71d..81f22980b2d 100644
--- a/drivers/sh/intc/core.c
+++ b/drivers/sh/intc/core.c
@@ -2,7 +2,7 @@
* Shared interrupt handling code for IPR and INTC2 types of IRQs.
*
* Copyright (C) 2007, 2008 Magnus Damm
- * Copyright (C) 2009, 2010 Paul Mundt
+ * Copyright (C) 2009 - 2012 Paul Mundt
*
* Based on intc2.c and ipr.c
*
@@ -22,25 +22,29 @@
#include <linux/irq.h>
#include <linux/io.h>
#include <linux/slab.h>
+#include <linux/stat.h>
#include <linux/interrupt.h>
#include <linux/sh_intc.h>
-#include <linux/sysdev.h>
+#include <linux/irqdomain.h>
+#include <linux/device.h>
#include <linux/syscore_ops.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/radix-tree.h>
+#include <linux/export.h>
+#include <linux/sort.h>
#include "internals.h"
LIST_HEAD(intc_list);
DEFINE_RAW_SPINLOCK(intc_big_lock);
-unsigned int nr_intc_controllers;
+static unsigned int nr_intc_controllers;
/*
* Default priority level
* - this needs to be at least 2 for 5-bit priorities on 7780
*/
static unsigned int default_prio_level = 2; /* 2 - 16 */
-static unsigned int intc_prio_level[NR_IRQS]; /* for now */
+static unsigned int intc_prio_level[INTC_NR_IRQS]; /* for now */
unsigned int intc_get_dfl_prio_level(void)
{
@@ -76,12 +80,6 @@ static void __init intc_register_irq(struct intc_desc *desc,
unsigned int data[2], primary;
unsigned long flags;
- /*
- * Register the IRQ position with the global IRQ map, then insert
- * it in to the radix tree.
- */
- irq_reserve_irq(irq);
-
raw_spin_lock_irqsave(&intc_big_lock, flags);
radix_tree_insert(&d->tree, enum_id, intc_irq_xlate_get(irq));
raw_spin_unlock_irqrestore(&intc_big_lock, flags);
@@ -265,6 +263,9 @@ int __init register_intc_controller(struct intc_desc *desc)
k += save_reg(d, k, hw->prio_regs[i].set_reg, smp);
k += save_reg(d, k, hw->prio_regs[i].clr_reg, smp);
}
+
+ sort(d->prio, hw->nr_prio_regs, sizeof(*d->prio),
+ intc_handle_int_cmp, NULL);
}
if (hw->sense_regs) {
@@ -275,6 +276,9 @@ int __init register_intc_controller(struct intc_desc *desc)
for (i = 0; i < hw->nr_sense_regs; i++)
k += save_reg(d, k, hw->sense_regs[i].reg, 0);
+
+ sort(d->sense, hw->nr_sense_regs, sizeof(*d->sense),
+ intc_handle_int_cmp, NULL);
}
if (hw->subgroups)
@@ -301,6 +305,8 @@ int __init register_intc_controller(struct intc_desc *desc)
BUG_ON(k > 256); /* _INTC_ADDR_E() and _INTC_ADDR_D() are 8 bits */
+ intc_irq_domain_init(d, hw);
+
/* register the vectors one by one */
for (i = 0; i < hw->nr_vectors; i++) {
struct intc_vect *vect = hw->vectors + i;
@@ -310,10 +316,18 @@ int __init register_intc_controller(struct intc_desc *desc)
if (!vect->enum_id)
continue;
- res = irq_alloc_desc_at(irq, numa_node_id());
- if (res != irq && res != -EEXIST) {
- pr_err("can't get irq_desc for %d\n", irq);
- continue;
+ res = irq_create_identity_mapping(d->domain, irq);
+ if (unlikely(res)) {
+ if (res == -EEXIST) {
+ res = irq_domain_associate(d->domain, irq, irq);
+ if (unlikely(res)) {
+ pr_err("domain association failure\n");
+ continue;
+ }
+ } else {
+ pr_err("can't identity map IRQ %d\n", irq);
+ continue;
+ }
}
intc_irq_xlate_set(irq, vect->enum_id, d);
@@ -331,10 +345,21 @@ int __init register_intc_controller(struct intc_desc *desc)
* IRQ support, each vector still needs to have
* its own backing irq_desc.
*/
- res = irq_alloc_desc_at(irq2, numa_node_id());
- if (res != irq2 && res != -EEXIST) {
- pr_err("can't get irq_desc for %d\n", irq2);
- continue;
+ res = irq_create_identity_mapping(d->domain, irq2);
+ if (unlikely(res)) {
+ if (res == -EEXIST) {
+ res = irq_domain_associate(d->domain,
+ irq2, irq2);
+ if (unlikely(res)) {
+ pr_err("domain association "
+ "failure\n");
+ continue;
+ }
+ } else {
+ pr_err("can't identity map IRQ %d\n",
+ irq);
+ continue;
+ }
}
vect2->enum_id = 0;
@@ -352,6 +377,8 @@ int __init register_intc_controller(struct intc_desc *desc)
if (desc->force_enable)
intc_enable_disable_enum(desc, d, desc->force_enable, 1);
+ d->skip_suspend = desc->skip_syscore_suspend;
+
nr_intc_controllers++;
return 0;
@@ -384,6 +411,9 @@ static int intc_suspend(void)
list_for_each_entry(d, &intc_list, list) {
int irq;
+ if (d->skip_suspend)
+ continue;
+
/* enable wakeup irqs belonging to this intc controller */
for_each_active_irq(irq) {
struct irq_data *data;
@@ -407,6 +437,9 @@ static void intc_resume(void)
list_for_each_entry(d, &intc_list, list) {
int irq;
+ if (d->skip_suspend)
+ continue;
+
for_each_active_irq(irq) {
struct irq_data *data;
struct irq_chip *chip;
@@ -432,46 +465,47 @@ struct syscore_ops intc_syscore_ops = {
.resume = intc_resume,
};
-struct sysdev_class intc_sysdev_class = {
+struct bus_type intc_subsys = {
.name = "intc",
+ .dev_name = "intc",
};
static ssize_t
-show_intc_name(struct sys_device *dev, struct sysdev_attribute *attr, char *buf)
+show_intc_name(struct device *dev, struct device_attribute *attr, char *buf)
{
struct intc_desc_int *d;
- d = container_of(dev, struct intc_desc_int, sysdev);
+ d = container_of(dev, struct intc_desc_int, dev);
return sprintf(buf, "%s\n", d->chip.name);
}
-static SYSDEV_ATTR(name, S_IRUGO, show_intc_name, NULL);
+static DEVICE_ATTR(name, S_IRUGO, show_intc_name, NULL);
-static int __init register_intc_sysdevs(void)
+static int __init register_intc_devs(void)
{
struct intc_desc_int *d;
int error;
register_syscore_ops(&intc_syscore_ops);
- error = sysdev_class_register(&intc_sysdev_class);
+ error = subsys_system_register(&intc_subsys, NULL);
if (!error) {
list_for_each_entry(d, &intc_list, list) {
- d->sysdev.id = d->index;
- d->sysdev.cls = &intc_sysdev_class;
- error = sysdev_register(&d->sysdev);
+ d->dev.id = d->index;
+ d->dev.bus = &intc_subsys;
+ error = device_register(&d->dev);
if (error == 0)
- error = sysdev_create_file(&d->sysdev,
- &attr_name);
+ error = device_create_file(&d->dev,
+ &dev_attr_name);
if (error)
break;
}
}
if (error)
- pr_err("sysdev registration error\n");
+ pr_err("device registration error\n");
return error;
}
-device_initcall(register_intc_sysdevs);
+device_initcall(register_intc_devs);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-13 04:58:02 +0000