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event: Add events for device probe/remove

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Generate events when devices are probed or removed, allowing hooks
to be added for these situations.

This is controlled by the DM_EVENT config option.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2022-03-04 08:43:03 -07:00
committed by Tom Rini
parent 5a4219043d
commit 5b896ed585
7 changed files with 96 additions and 0 deletions
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38
test/common/event.c
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@@ -45,3 +45,41 @@ static int test_event_base(struct unit_test_state *uts)
return 0;
}
COMMON_TEST(test_event_base, 0);
static int h_probe(void *ctx, struct event *event)
{
struct test_state *test_state = ctx;
test_state->dev = event->data.dm.dev;
switch (event->type) {
case EVT_DM_PRE_PROBE:
test_state->val |= 1;
break;
case EVT_DM_POST_PROBE:
test_state->val |= 2;
break;
default:
break;
}
return 0;
}
static int test_event_probe(struct unit_test_state *uts)
{
struct test_state state;
struct udevice *dev;
state.val = 0;
ut_assertok(event_register("pre", EVT_DM_PRE_PROBE, h_probe, &state));
ut_assertok(event_register("post", EVT_DM_POST_PROBE, h_probe, &state));
/* Probe a device */
ut_assertok(uclass_first_device_err(UCLASS_TEST_FDT, &dev));
/* Check that the handler is called */
ut_asserteq(3, state.val);
return 0;
}
COMMON_TEST(test_event_probe, UT_TESTF_DM | UT_TESTF_SCAN_FDT);