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path: root/drivers/of/irq.c
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Diffstat (limited to 'drivers/of/irq.c')
-rw-r--r--drivers/of/irq.c77
1 files changed, 31 insertions, 46 deletions
diff --git a/drivers/of/irq.c b/drivers/of/irq.c
index ab21c846eb27..ec00ae7384c2 100644
--- a/drivers/of/irq.c
+++ b/drivers/of/irq.c
@@ -59,20 +59,19 @@ EXPORT_SYMBOL_GPL(irq_of_parse_and_map);
struct device_node *of_irq_find_parent(struct device_node *child)
{
struct device_node *p;
- const __be32 *parp;
+ phandle parent;
if (!of_node_get(child))
return NULL;
do {
- parp = of_get_property(child, "interrupt-parent", NULL);
- if (parp == NULL)
+ if (of_property_read_u32(child, "interrupt-parent", &parent)) {
p = of_get_parent(child);
- else {
+ } else {
if (of_irq_workarounds & OF_IMAP_NO_PHANDLE)
p = of_node_get(of_irq_dflt_pic);
else
- p = of_find_node_by_phandle(be32_to_cpup(parp));
+ p = of_find_node_by_phandle(parent);
}
of_node_put(child);
child = p;
@@ -117,11 +116,8 @@ int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq)
* is none, we are nice and just walk up the tree
*/
do {
- tmp = of_get_property(ipar, "#interrupt-cells", NULL);
- if (tmp != NULL) {
- intsize = be32_to_cpu(*tmp);
+ if (!of_property_read_u32(ipar, "#interrupt-cells", &intsize))
break;
- }
tnode = ipar;
ipar = of_irq_find_parent(ipar);
of_node_put(tnode);
@@ -131,7 +127,7 @@ int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq)
goto fail;
}
- pr_debug("of_irq_parse_raw: ipar=%s, size=%d\n", of_node_full_name(ipar), intsize);
+ pr_debug("of_irq_parse_raw: ipar=%pOF, size=%d\n", ipar, intsize);
if (out_irq->args_count != intsize)
goto fail;
@@ -169,8 +165,7 @@ int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq)
/* Now check if cursor is an interrupt-controller and if it is
* then we are done
*/
- if (of_get_property(ipar, "interrupt-controller", NULL) !=
- NULL) {
+ if (of_property_read_bool(ipar, "interrupt-controller")) {
pr_debug(" -> got it !\n");
return 0;
}
@@ -229,14 +224,14 @@ int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq)
/* Get #interrupt-cells and #address-cells of new
* parent
*/
- tmp = of_get_property(newpar, "#interrupt-cells", NULL);
- if (tmp == NULL) {
+ if (of_property_read_u32(newpar, "#interrupt-cells",
+ &newintsize)) {
pr_debug(" -> parent lacks #interrupt-cells!\n");
goto fail;
}
- newintsize = be32_to_cpu(*tmp);
- tmp = of_get_property(newpar, "#address-cells", NULL);
- newaddrsize = (tmp == NULL) ? 0 : be32_to_cpu(*tmp);
+ if (of_property_read_u32(newpar, "#address-cells",
+ &newaddrsize))
+ newaddrsize = 0;
pr_debug(" -> newintsize=%d, newaddrsize=%d\n",
newintsize, newaddrsize);
@@ -269,7 +264,7 @@ int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq)
skiplevel:
/* Iterate again with new parent */
out_irq->np = newpar;
- pr_debug(" -> new parent: %s\n", of_node_full_name(newpar));
+ pr_debug(" -> new parent: %pOF\n", newpar);
of_node_put(ipar);
ipar = newpar;
newpar = NULL;
@@ -297,11 +292,11 @@ EXPORT_SYMBOL_GPL(of_irq_parse_raw);
int of_irq_parse_one(struct device_node *device, int index, struct of_phandle_args *out_irq)
{
struct device_node *p;
- const __be32 *intspec, *tmp, *addr;
- u32 intsize, intlen;
+ const __be32 *addr;
+ u32 intsize;
int i, res;
- pr_debug("of_irq_parse_one: dev=%s, index=%d\n", of_node_full_name(device), index);
+ pr_debug("of_irq_parse_one: dev=%pOF, index=%d\n", device, index);
/* OldWorld mac stuff is "special", handle out of line */
if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
@@ -316,42 +311,32 @@ int of_irq_parse_one(struct device_node *device, int index, struct of_phandle_ar
if (!res)
return of_irq_parse_raw(addr, out_irq);
- /* Get the interrupts property */
- intspec = of_get_property(device, "interrupts", &intlen);
- if (intspec == NULL)
- return -EINVAL;
-
- intlen /= sizeof(*intspec);
-
- pr_debug(" intspec=%d intlen=%d\n", be32_to_cpup(intspec), intlen);
-
/* Look for the interrupt parent. */
p = of_irq_find_parent(device);
if (p == NULL)
return -EINVAL;
/* Get size of interrupt specifier */
- tmp = of_get_property(p, "#interrupt-cells", NULL);
- if (tmp == NULL) {
+ if (of_property_read_u32(p, "#interrupt-cells", &intsize)) {
res = -EINVAL;
goto out;
}
- intsize = be32_to_cpu(*tmp);
- pr_debug(" intsize=%d intlen=%d\n", intsize, intlen);
-
- /* Check index */
- if ((index + 1) * intsize > intlen) {
- res = -EINVAL;
- goto out;
- }
+ pr_debug(" parent=%pOF, intsize=%d\n", p, intsize);
/* Copy intspec into irq structure */
- intspec += index * intsize;
out_irq->np = p;
out_irq->args_count = intsize;
- for (i = 0; i < intsize; i++)
- out_irq->args[i] = be32_to_cpup(intspec++);
+ for (i = 0; i < intsize; i++) {
+ res = of_property_read_u32_index(device, "interrupts",
+ (index * intsize) + i,
+ out_irq->args + i);
+ if (res)
+ goto out;
+ }
+
+ pr_debug(" intspec=%d\n", *out_irq->args);
+
/* Check if there are any interrupt-map translations to process */
res = of_irq_parse_raw(addr, out_irq);
@@ -508,7 +493,7 @@ void __init of_irq_init(const struct of_device_id *matches)
INIT_LIST_HEAD(&intc_parent_list);
for_each_matching_node_and_match(np, matches, &match) {
- if (!of_find_property(np, "interrupt-controller", NULL) ||
+ if (!of_property_read_bool(np, "interrupt-controller") ||
!of_device_is_available(np))
continue;
@@ -555,8 +540,8 @@ void __init of_irq_init(const struct of_device_id *matches)
of_node_set_flag(desc->dev, OF_POPULATED);
- pr_debug("of_irq_init: init %s (%p), parent %p\n",
- desc->dev->full_name,
+ pr_debug("of_irq_init: init %pOF (%p), parent %p\n",
+ desc->dev,
desc->dev, desc->interrupt_parent);
ret = desc->irq_init_cb(desc->dev,
desc->interrupt_parent);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-28 14:10:06 +0100