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authorRob Herring <robh@kernel.org>2014-05-13 18:34:35 -0500
committerRob Herring <robh@kernel.org>2014-05-13 18:34:35 -0500
commiteafd370dfe487facfdef499057f4eac9aa0b4bf5 (patch)
tree0925a67cd658cdf4811f49b4cd2073f663166bd0 /drivers/of
parentc3fc952d2fbe3ec78defd70cf73d5d76d27092ec (diff)
parentfb2caa50fbacd21719a90dd66b617ce3cb4fd6d7 (diff)
downloadlinux-eafd370dfe487facfdef499057f4eac9aa0b4bf5.tar.bz2
Merge branch 'dt-bus-name' into for-next
Diffstat (limited to 'drivers/of')
-rw-r--r--drivers/of/address.c22
-rw-r--r--drivers/of/irq.c28
-rw-r--r--drivers/of/platform.c20
-rw-r--r--drivers/of/selftest.c46
-rw-r--r--drivers/of/testcase-data/testcases.dtsi1
-rw-r--r--drivers/of/testcase-data/tests-interrupts.dtsi13
-rw-r--r--drivers/of/testcase-data/tests-platform.dtsi35
7 files changed, 129 insertions, 36 deletions
diff --git a/drivers/of/address.c b/drivers/of/address.c
index cb4242a69cd5..95351b2a112c 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -498,8 +498,7 @@ static u64 __of_translate_address(struct device_node *dev,
/* Count address cells & copy address locally */
bus->count_cells(dev, &na, &ns);
if (!OF_CHECK_COUNTS(na, ns)) {
- printk(KERN_ERR "prom_parse: Bad cell count for %s\n",
- of_node_full_name(dev));
+ pr_debug("OF: Bad cell count for %s\n", of_node_full_name(dev));
goto bail;
}
memcpy(addr, in_addr, na * 4);
@@ -564,25 +563,6 @@ u64 of_translate_dma_address(struct device_node *dev, const __be32 *in_addr)
}
EXPORT_SYMBOL(of_translate_dma_address);
-bool of_can_translate_address(struct device_node *dev)
-{
- struct device_node *parent;
- struct of_bus *bus;
- int na, ns;
-
- parent = of_get_parent(dev);
- if (parent == NULL)
- return false;
-
- bus = of_match_bus(parent);
- bus->count_cells(dev, &na, &ns);
-
- of_node_put(parent);
-
- return OF_CHECK_COUNTS(na, ns);
-}
-EXPORT_SYMBOL(of_can_translate_address);
-
const __be32 *of_get_address(struct device_node *dev, int index, u64 *size,
unsigned int *flags)
{
diff --git a/drivers/of/irq.c b/drivers/of/irq.c
index 9bcf2cf19357..5aeb89411350 100644
--- a/drivers/of/irq.c
+++ b/drivers/of/irq.c
@@ -364,7 +364,7 @@ int of_irq_to_resource(struct device_node *dev, int index, struct resource *r)
memset(r, 0, sizeof(*r));
/*
- * Get optional "interrupts-names" property to add a name
+ * Get optional "interrupt-names" property to add a name
* to the resource.
*/
of_property_read_string_index(dev, "interrupt-names", index,
@@ -380,6 +380,32 @@ int of_irq_to_resource(struct device_node *dev, int index, struct resource *r)
EXPORT_SYMBOL_GPL(of_irq_to_resource);
/**
+ * of_irq_get - Decode a node's IRQ and return it as a Linux irq number
+ * @dev: pointer to device tree node
+ * @index: zero-based index of the irq
+ *
+ * Returns Linux irq number on success, or -EPROBE_DEFER if the irq domain
+ * is not yet created.
+ *
+ */
+int of_irq_get(struct device_node *dev, int index)
+{
+ int rc;
+ struct of_phandle_args oirq;
+ struct irq_domain *domain;
+
+ rc = of_irq_parse_one(dev, index, &oirq);
+ if (rc)
+ return rc;
+
+ domain = irq_find_host(oirq.np);
+ if (!domain)
+ return -EPROBE_DEFER;
+
+ return irq_create_of_mapping(&oirq);
+}
+
+/**
* of_irq_count - Count the number of IRQs a node uses
* @dev: pointer to device tree node
*/
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index 404d1daebefa..d0009b3614af 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -78,7 +78,6 @@ void of_device_make_bus_id(struct device *dev)
struct device_node *node = dev->of_node;
const __be32 *reg;
u64 addr;
- const __be32 *addrp;
int magic;
#ifdef CONFIG_PPC_DCR
@@ -106,15 +105,7 @@ void of_device_make_bus_id(struct device *dev)
*/
reg = of_get_property(node, "reg", NULL);
if (reg) {
- if (of_can_translate_address(node)) {
- addr = of_translate_address(node, reg);
- } else {
- addrp = of_get_address(node, 0, NULL, NULL);
- if (addrp)
- addr = of_read_number(addrp, 1);
- else
- addr = OF_BAD_ADDR;
- }
+ addr = of_translate_address(node, reg);
if (addr != OF_BAD_ADDR) {
dev_set_name(dev, "%llx.%s",
(unsigned long long)addr, node->name);
@@ -149,9 +140,8 @@ struct platform_device *of_device_alloc(struct device_node *np,
return NULL;
/* count the io and irq resources */
- if (of_can_translate_address(np))
- while (of_address_to_resource(np, num_reg, &temp_res) == 0)
- num_reg++;
+ while (of_address_to_resource(np, num_reg, &temp_res) == 0)
+ num_reg++;
num_irq = of_irq_count(np);
/* Populate the resource table */
@@ -168,7 +158,9 @@ struct platform_device *of_device_alloc(struct device_node *np,
rc = of_address_to_resource(np, i, res);
WARN_ON(rc);
}
- WARN_ON(of_irq_to_resource_table(np, res, num_irq) != num_irq);
+ if (of_irq_to_resource_table(np, res, num_irq) != num_irq)
+ pr_debug("not all legacy IRQ resources mapped for %s\n",
+ np->name);
}
dev->dev.of_node = of_node_get(np);
diff --git a/drivers/of/selftest.c b/drivers/of/selftest.c
index ae4450070503..2588faaaa305 100644
--- a/drivers/of/selftest.c
+++ b/drivers/of/selftest.c
@@ -10,6 +10,7 @@
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_irq.h>
+#include <linux/of_platform.h>
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/slab.h>
@@ -427,6 +428,50 @@ static void __init of_selftest_match_node(void)
}
}
+static void __init of_selftest_platform_populate(void)
+{
+ int irq;
+ struct device_node *np, *child;
+ struct platform_device *pdev;
+ struct of_device_id match[] = {
+ { .compatible = "test-device", },
+ {}
+ };
+
+ np = of_find_node_by_path("/testcase-data");
+ of_platform_populate(np, of_default_bus_match_table, NULL, NULL);
+
+ /* Test that a missing irq domain returns -EPROBE_DEFER */
+ np = of_find_node_by_path("/testcase-data/testcase-device1");
+ pdev = of_find_device_by_node(np);
+ selftest(pdev, "device 1 creation failed\n");
+
+ irq = platform_get_irq(pdev, 0);
+ selftest(irq == -EPROBE_DEFER, "device deferred probe failed - %d\n", irq);
+
+ /* Test that a parsing failure does not return -EPROBE_DEFER */
+ np = of_find_node_by_path("/testcase-data/testcase-device2");
+ pdev = of_find_device_by_node(np);
+ selftest(pdev, "device 2 creation failed\n");
+ irq = platform_get_irq(pdev, 0);
+ selftest(irq < 0 && irq != -EPROBE_DEFER, "device parsing error failed - %d\n", irq);
+
+ np = of_find_node_by_path("/testcase-data/platform-tests");
+ if (!np) {
+ pr_err("No testcase data in device tree\n");
+ return;
+ }
+
+ for_each_child_of_node(np, child) {
+ struct device_node *grandchild;
+ of_platform_populate(child, match, NULL, NULL);
+ for_each_child_of_node(child, grandchild)
+ selftest(of_find_device_by_node(grandchild),
+ "Could not create device for node '%s'\n",
+ grandchild->name);
+ }
+}
+
static int __init of_selftest(void)
{
struct device_node *np;
@@ -445,6 +490,7 @@ static int __init of_selftest(void)
of_selftest_parse_interrupts();
of_selftest_parse_interrupts_extended();
of_selftest_match_node();
+ of_selftest_platform_populate();
pr_info("end of selftest - %i passed, %i failed\n",
selftest_results.passed, selftest_results.failed);
return 0;
diff --git a/drivers/of/testcase-data/testcases.dtsi b/drivers/of/testcase-data/testcases.dtsi
index 3a5b75a8e4d7..6d8d980ac858 100644
--- a/drivers/of/testcase-data/testcases.dtsi
+++ b/drivers/of/testcase-data/testcases.dtsi
@@ -1,3 +1,4 @@
#include "tests-phandle.dtsi"
#include "tests-interrupts.dtsi"
#include "tests-match.dtsi"
+#include "tests-platform.dtsi"
diff --git a/drivers/of/testcase-data/tests-interrupts.dtsi b/drivers/of/testcase-data/tests-interrupts.dtsi
index c843720bd3e5..da4695f60351 100644
--- a/drivers/of/testcase-data/tests-interrupts.dtsi
+++ b/drivers/of/testcase-data/tests-interrupts.dtsi
@@ -54,5 +54,18 @@
<&test_intmap1 1 2>;
};
};
+
+ testcase-device1 {
+ compatible = "testcase-device";
+ interrupt-parent = <&test_intc0>;
+ interrupts = <1>;
+ };
+
+ testcase-device2 {
+ compatible = "testcase-device";
+ interrupt-parent = <&test_intc2>;
+ interrupts = <1>; /* invalid specifier - too short */
+ };
};
+
};
diff --git a/drivers/of/testcase-data/tests-platform.dtsi b/drivers/of/testcase-data/tests-platform.dtsi
new file mode 100644
index 000000000000..eb20eeb2b062
--- /dev/null
+++ b/drivers/of/testcase-data/tests-platform.dtsi
@@ -0,0 +1,35 @@
+
+/ {
+ testcase-data {
+ platform-tests {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ test-device@0 {
+ compatible = "test-device";
+ reg = <0x0>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ dev@100 {
+ compatible = "test-sub-device";
+ reg = <0x100>;
+ };
+ };
+
+ test-device@1 {
+ compatible = "test-device";
+ reg = <0x1>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ dev@100 {
+ compatible = "test-sub-device";
+ reg = <0x100>;
+ };
+ };
+ };
+ };
+};