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of: Add testcases for interrupt parsing 

This patch extends the DT selftest code with some test cases for the
interrupt parsing functions.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
Grant Likely 2013-10-11 22:04:23 +01:00
parent 624cfca534
commit a9f10ca76d
3 changed files with 127 additions and 6 deletions
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41
arch/arm/boot/dts/testcases/tests-interrupts.dtsi Normal file
View File

@ -0,0 +1,41 @@
/ {
testcase-data {
interrupts {
#address-cells = <0>;
test_intc0: intc0 {
interrupt-controller;
#interrupt-cells = <1>;
};
test_intc1: intc1 {
interrupt-controller;
#interrupt-cells = <3>;
};
test_intc2: intc2 {
interrupt-controller;
#interrupt-cells = <2>;
};
test_intmap0: intmap0 {
#interrupt-cells = <1>;
#address-cells = <0>;
interrupt-map = <1 &test_intc0 9>,
<2 &test_intc1 10 11 12>,
<3 &test_intc2 13 14>,
<4 &test_intc2 15 16>;
};
interrupts0 {
interrupt-parent = <&test_intc0>;
interrupts = <1>, <2>, <3>, <4>;
};
interrupts1 {
interrupt-parent = <&test_intmap0>;
interrupts = <1>, <2>, <3>, <4>;
};
};
};
};

1
arch/arm/boot/dts/testcases/tests.dtsi
View File

@ -1 +1,2 @@
/include/ "tests-phandle.dtsi"
/include/ "tests-interrupts.dtsi"

91
drivers/of/selftest.c
View File

@ -9,18 +9,24 @@
#include <linux/errno.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/device.h>
static bool selftest_passed = true;
static struct selftest_results {
int passed;
int failed;
} selftest_results;
#define selftest(result, fmt, ...) { \
if (!(result)) { \
pr_err("FAIL %s:%i " fmt, __FILE__, __LINE__, ##__VA_ARGS__); \
selftest_passed = false; \
selftest_results.failed++; \
pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \
} else { \
pr_info("pass %s:%i\n", __FILE__, __LINE__); \
selftest_results.passed++; \
pr_debug("pass %s():%i\n", __func__, __LINE__); \
} \
}
@ -131,7 +137,6 @@ static void __init of_selftest_property_match_string(void)
struct device_node *np;
int rc;
pr_info("start\n");
np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
if (!np) {
pr_err("No testcase data in device tree\n");
@ -154,6 +159,78 @@ static void __init of_selftest_property_match_string(void)
selftest(rc == -EILSEQ, "unterminated string; rc=%i", rc);
}
static void __init of_selftest_parse_interrupts(void)
{
struct device_node *np;
struct of_phandle_args args;
int i, rc;
np = of_find_node_by_path("/testcase-data/interrupts/interrupts0");
if (!np) {
pr_err("missing testcase data\n");
return;
}
for (i = 0; i < 4; i++) {
bool passed = true;
args.args_count = 0;
rc = of_irq_parse_one(np, i, &args);
passed &= !rc;
passed &= (args.args_count == 1);
passed &= (args.args[0] == (i + 1));
selftest(passed, "index %i - data error on node %s rc=%i\n",
i, args.np->full_name, rc);
}
of_node_put(np);
np = of_find_node_by_path("/testcase-data/interrupts/interrupts1");
if (!np) {
pr_err("missing testcase data\n");
return;
}
for (i = 0; i < 4; i++) {
bool passed = true;
args.args_count = 0;
rc = of_irq_parse_one(np, i, &args);
/* Test the values from tests-phandle.dtsi */
switch (i) {
case 0:
passed &= !rc;
passed &= (args.args_count == 1);
passed &= (args.args[0] == 9);
break;
case 1:
passed &= !rc;
passed &= (args.args_count == 3);
passed &= (args.args[0] == 10);
passed &= (args.args[1] == 11);
passed &= (args.args[2] == 12);
break;
case 2:
passed &= !rc;
passed &= (args.args_count == 2);
passed &= (args.args[0] == 13);
passed &= (args.args[1] == 14);
break;
case 3:
passed &= !rc;
passed &= (args.args_count == 2);
passed &= (args.args[0] == 15);
passed &= (args.args[1] == 16);
break;
default:
passed = false;
}
selftest(passed, "index %i - data error on node %s rc=%i\n",
i, args.np->full_name, rc);
}
of_node_put(np);
}
static int __init of_selftest(void)
{
struct device_node *np;
@ -168,7 +245,9 @@ static int __init of_selftest(void)
pr_info("start of selftest - you will see error messages\n");
of_selftest_parse_phandle_with_args();
of_selftest_property_match_string();
pr_info("end of selftest - %s\n", selftest_passed ? "PASS" : "FAIL");
of_selftest_parse_interrupts();
pr_info("end of selftest - %i passed, %i failed\n",
selftest_results.passed, selftest_results.failed);
return 0;
}
late_initcall(of_selftest);