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dm: core: Add a post_bind method for parents

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Allow parent drivers to be called when a new child is bound to them. This
allows a bus to set up information it needs for that child.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
This commit is contained in:
Simon Glass
2015-01-25 08:27:03 -07:00
parent ba8da9dc43
commit 0118ce7957
3 changed files with 49 additions and 0 deletions
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35
test/dm/bus.c
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@@ -17,6 +17,7 @@ DECLARE_GLOBAL_DATA_PTR;
struct dm_test_parent_platdata {
int count;
int bind_flag;
};
enum {
@@ -31,6 +32,16 @@ static int testbus_drv_probe(struct udevice *dev)
return dm_scan_fdt_node(dev, gd->fdt_blob, dev->of_offset, false);
}
static int testbus_child_post_bind(struct udevice *dev)
{
struct dm_test_parent_platdata *plat;
plat = dev_get_parent_platdata(dev);
plat->bind_flag = 1;
return 0;
}
static int testbus_child_pre_probe(struct udevice *dev)
{
struct dm_test_parent_data *parent_data = dev_get_parentdata(dev);
@@ -64,6 +75,7 @@ U_BOOT_DRIVER(testbus_drv) = {
.of_match = testbus_ids,
.id = UCLASS_TEST_BUS,
.probe = testbus_drv_probe,
.child_post_bind = testbus_child_post_bind,
.priv_auto_alloc_size = sizeof(struct dm_test_priv),
.platdata_auto_alloc_size = sizeof(struct dm_test_pdata),
.per_child_auto_alloc_size = sizeof(struct dm_test_parent_data),
@@ -380,3 +392,26 @@ static int dm_test_bus_parent_platdata_uclass(struct dm_test_state *dms)
}
DM_TEST(dm_test_bus_parent_platdata_uclass,
DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
/* Test that the child post_bind method is called */
static int dm_test_bus_child_post_bind(struct dm_test_state *dms)
{
struct dm_test_parent_platdata *plat;
struct udevice *bus, *dev;
int child_count;
ut_assertok(uclass_get_device(UCLASS_TEST_BUS, 0, &bus));
for (device_find_first_child(bus, &dev), child_count = 0;
dev;
device_find_next_child(&dev)) {
/* Check that platform data is allocated */
plat = dev_get_parent_platdata(dev);
ut_assert(plat != NULL);
ut_asserteq(1, plat->bind_flag);
child_count++;
}
ut_asserteq(3, child_count);
return 0;
}
DM_TEST(dm_test_bus_child_post_bind, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);