diff options
Diffstat (limited to 'test/dm/wdt.c')
| -rw-r--r-- | test/dm/wdt.c | 90 |
1 files changed, 89 insertions, 1 deletions
diff --git a/test/dm/wdt.c b/test/dm/wdt.c index 24b991d..ee615f0 100644 --- a/test/dm/wdt.c +++ b/test/dm/wdt.c @@ -6,11 +6,14 @@ #include <common.h> #include <dm.h> #include <wdt.h> +#include <asm/gpio.h> #include <asm/state.h> #include <asm/test.h> #include <dm/test.h> #include <test/test.h> #include <test/ut.h> +#include <linux/delay.h> +#include <watchdog.h> /* Test that watchdog driver functions are called */ static int dm_test_wdt_base(struct unit_test_state *uts) @@ -19,7 +22,8 @@ static int dm_test_wdt_base(struct unit_test_state *uts) struct udevice *dev; const u64 timeout = 42; - ut_assertok(uclass_get_device(UCLASS_WDT, 0, &dev)); + ut_assertok(uclass_get_device_by_driver(UCLASS_WDT, + DM_DRIVER_GET(wdt_sandbox), &dev)); ut_assertnonnull(dev); ut_asserteq(0, state->wdt.counter); ut_asserteq(false, state->wdt.running); @@ -39,3 +43,87 @@ static int dm_test_wdt_base(struct unit_test_state *uts) return 0; } DM_TEST(dm_test_wdt_base, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT); + +static int dm_test_wdt_gpio(struct unit_test_state *uts) +{ + /* + * The sandbox wdt gpio is "connected" to gpio bank a, offset + * 7. Use the sandbox back door to verify that the gpio-wdt + * driver behaves as expected. + */ + struct udevice *wdt, *gpio; + const u64 timeout = 42; + const int offset = 7; + int val; + + ut_assertok(uclass_get_device_by_driver(UCLASS_WDT, + DM_DRIVER_GET(wdt_gpio), &wdt)); + ut_assertnonnull(wdt); + + ut_assertok(uclass_get_device_by_name(UCLASS_GPIO, "base-gpios", &gpio)); + ut_assertnonnull(gpio); + ut_assertok(wdt_start(wdt, timeout, 0)); + + val = sandbox_gpio_get_value(gpio, offset); + ut_assertok(wdt_reset(wdt)); + ut_asserteq(!val, sandbox_gpio_get_value(gpio, offset)); + ut_assertok(wdt_reset(wdt)); + ut_asserteq(val, sandbox_gpio_get_value(gpio, offset)); + + ut_asserteq(-ENOSYS, wdt_stop(wdt)); + + return 0; +} +DM_TEST(dm_test_wdt_gpio, UT_TESTF_SCAN_FDT); + +static int dm_test_wdt_watchdog_reset(struct unit_test_state *uts) +{ + struct sandbox_state *state = state_get_current(); + struct udevice *gpio_wdt, *sandbox_wdt; + struct udevice *gpio; + const u64 timeout = 42; + const int offset = 7; + uint reset_count; + int val; + + ut_assertok(uclass_get_device_by_driver(UCLASS_WDT, + DM_DRIVER_GET(wdt_gpio), &gpio_wdt)); + ut_assertnonnull(gpio_wdt); + ut_assertok(uclass_get_device_by_driver(UCLASS_WDT, + DM_DRIVER_GET(wdt_sandbox), &sandbox_wdt)); + ut_assertnonnull(sandbox_wdt); + ut_assertok(uclass_get_device_by_name(UCLASS_GPIO, "base-gpios", &gpio)); + ut_assertnonnull(gpio); + + /* Neither device should be "started", so watchdog_reset() should be a no-op. */ + reset_count = state->wdt.reset_count; + val = sandbox_gpio_get_value(gpio, offset); + watchdog_reset(); + ut_asserteq(reset_count, state->wdt.reset_count); + ut_asserteq(val, sandbox_gpio_get_value(gpio, offset)); + + /* Start both devices. */ + ut_assertok(wdt_start(gpio_wdt, timeout, 0)); + ut_assertok(wdt_start(sandbox_wdt, timeout, 0)); + + /* Make sure both devices have just been pinged. */ + timer_test_add_offset(100); + watchdog_reset(); + reset_count = state->wdt.reset_count; + val = sandbox_gpio_get_value(gpio, offset); + + /* The gpio watchdog should be pinged, the sandbox one not. */ + timer_test_add_offset(30); + watchdog_reset(); + ut_asserteq(reset_count, state->wdt.reset_count); + ut_asserteq(!val, sandbox_gpio_get_value(gpio, offset)); + + /* After another ~30ms, both devices should get pinged. */ + timer_test_add_offset(30); + watchdog_reset(); + ut_asserteq(reset_count + 1, state->wdt.reset_count); + ut_asserteq(val, sandbox_gpio_get_value(gpio, offset)); + + return 0; +} +DM_TEST(dm_test_wdt_watchdog_reset, UT_TESTF_SCAN_FDT); |