diff options
| -rw-r--r-- | drivers/core/device.c | 4 | ||||
| -rw-r--r-- | include/dm/uclass.h | 5 | ||||
| -rw-r--r-- | test/dm/bus.c | 32 |
3 files changed, 39 insertions, 2 deletions
diff --git a/drivers/core/device.c b/drivers/core/device.c index ee97cc84ff..2f33b0e6a3 100644 --- a/drivers/core/device.c +++ b/drivers/core/device.c @@ -83,6 +83,10 @@ int device_bind(struct udevice *parent, struct driver *drv, const char *name, if (parent) { int size = parent->driver->per_child_platdata_auto_alloc_size; + if (!size) { + size = parent->uclass->uc_drv-> + per_child_platdata_auto_alloc_size; + } if (size) { dev->flags |= DM_FLAG_ALLOC_PARENT_PDATA; dev->parent_platdata = calloc(1, size); diff --git a/include/dm/uclass.h b/include/dm/uclass.h index 2577ae6489..7d92d34bec 100644 --- a/include/dm/uclass.h +++ b/include/dm/uclass.h @@ -60,6 +60,10 @@ struct udevice; * @per_device_auto_alloc_size: Each device can hold private data owned * by the uclass. If required this will be automatically allocated if this * value is non-zero. + * @per_child_platdata_auto_alloc_size: A bus likes to store information about + * its children. If non-zero this is the size of this data, to be allocated + * in the child device's parent_platdata pointer. This value is only used as + * a falback if this member is 0 in the driver. * @ops: Uclass operations, providing the consistent interface to devices * within the uclass. */ @@ -74,6 +78,7 @@ struct uclass_driver { int (*destroy)(struct uclass *class); int priv_auto_alloc_size; int per_device_auto_alloc_size; + int per_child_platdata_auto_alloc_size; const void *ops; }; diff --git a/test/dm/bus.c b/test/dm/bus.c index 63c8a9f738..26b8293037 100644 --- a/test/dm/bus.c +++ b/test/dm/bus.c @@ -279,8 +279,7 @@ static int dm_test_bus_parent_ops(struct dm_test_state *dms) } DM_TEST(dm_test_bus_parent_ops, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); -/* Test that the bus can store platform data about each child */ -static int dm_test_bus_parent_platdata(struct dm_test_state *dms) +static int test_bus_parent_platdata(struct dm_test_state *dms) { struct dm_test_parent_platdata *plat; struct udevice *bus, *dev; @@ -351,4 +350,33 @@ static int dm_test_bus_parent_platdata(struct dm_test_state *dms) return 0; } + +/* Test that the bus can store platform data about each child */ +static int dm_test_bus_parent_platdata(struct dm_test_state *dms) +{ + return test_bus_parent_platdata(dms); +} DM_TEST(dm_test_bus_parent_platdata, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); + +/* As above but the size is controlled by the uclass */ +static int dm_test_bus_parent_platdata_uclass(struct dm_test_state *dms) +{ + struct udevice *bus; + int size; + int ret; + + /* Set the driver size to 0 so that the uclass size is used */ + ut_assertok(uclass_find_device(UCLASS_TEST_BUS, 0, &bus)); + size = bus->driver->per_child_platdata_auto_alloc_size; + bus->uclass->uc_drv->per_child_platdata_auto_alloc_size = size; + bus->driver->per_child_platdata_auto_alloc_size = 0; + ret = test_bus_parent_platdata(dms); + if (ret) + return ret; + bus->uclass->uc_drv->per_child_platdata_auto_alloc_size = 0; + bus->driver->per_child_platdata_auto_alloc_size = size; + + return 0; +} +DM_TEST(dm_test_bus_parent_platdata_uclass, + DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); |