dm: core: Add a function to look up a uclass by name

Each uclass has a driver name which we can use to look up the uclass. This
is useful for logging, where the uclass ID is used as the category.

Add a function to handle this, as well as a test.

Signed-off-by: Simon Glass <sjg@chromium.org>
master
Simon Glass 7 years ago
parent b2153075f4
commit 6e43d1b199
  1. 14
      drivers/core/uclass.c
  2. 8
      include/dm/uclass.h
  3. 9
      test/dm/core.c

@ -158,6 +158,20 @@ const char *uclass_get_name(enum uclass_id id)
return uc->uc_drv->name;
}
enum uclass_id uclass_get_by_name(const char *name)
{
int i;
for (i = 0; i < UCLASS_COUNT; i++) {
struct uclass_driver *uc_drv = lists_uclass_lookup(i);
if (uc_drv && !strcmp(uc_drv->name, name))
return i;
}
return UCLASS_INVALID;
}
int uclass_find_device(enum uclass_id id, int index, struct udevice **devp)
{
struct uclass *uc;

@ -128,6 +128,14 @@ int uclass_get(enum uclass_id key, struct uclass **ucp);
const char *uclass_get_name(enum uclass_id id);
/**
* uclass_get_by_name() - Look up a uclass by its driver name
*
* @name: Name to look up
* @returns the associated uclass ID, or UCLASS_INVALID if not found
*/
enum uclass_id uclass_get_by_name(const char *name);
/**
* uclass_get_device() - Get a uclass device based on an ID and index
*
* The device is probed to activate it ready for use.

@ -862,3 +862,12 @@ static int dm_test_device_get_uclass_id(struct unit_test_state *uts)
return 0;
}
DM_TEST(dm_test_device_get_uclass_id, DM_TESTF_SCAN_PDATA);
static int dm_test_uclass_names(struct unit_test_state *uts)
{
ut_asserteq_str("test", uclass_get_name(UCLASS_TEST));
ut_asserteq(UCLASS_TEST, uclass_get_by_name("test"));
return 0;
}
DM_TEST(dm_test_uclass_names, DM_TESTF_SCAN_PDATA);

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