dm: test: Add tests for device's uclass platform data

This test introduces new test structure type:dm_test_perdev_uc_pdata.
The structure consists of three int values only. For the test purposes,
three pattern values are defined by enum, starting with TEST_UC_PDATA_INTVAL1.

This commit adds two test cases for uclass platform data:
- Test: dm_test_autobind_uclass_pdata_alloc - this tests if:
  * uclass driver sets: .per_device_platdata_auto_alloc_size field
  * the devices's: dev->uclass_platdata is non-NULL

- Test: dm_test_autobind_uclass_pdata_valid - this tests:
  * if the devices's: dev->uclass_platdata is non-NULL
  * the structure of type 'dm_test_perdev_uc_pdata' allocated at address
    pointed by dev->uclass_platdata. Each structure field, should be equal
    to proper pattern data, starting from .intval1 == TEST_UC_PDATA_INTVAL1.

Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Cc: Simon Glass <sjg@chromium.org>
Acked-by: Simon Glass <sjg@chromium.org>

include/dm/test.h

@@ -98,6 +98,26 @@ struct dm_test_parent_data {
 	int flag;
 };
 
+/* Test values for test device's uclass platform data */
+enum {
+	TEST_UC_PDATA_INTVAL1 = 2,
+	TEST_UC_PDATA_INTVAL2 = 334,
+	TEST_UC_PDATA_INTVAL3 = 789452,
+};
+
+/**
+ * struct dm_test_uclass_platda - uclass's information on each device
+ *
+ * @intval1: set to TEST_UC_PDATA_INTVAL1 in .post_bind method of test uclass
+ * @intval2: set to TEST_UC_PDATA_INTVAL2 in .post_bind method of test uclass
+ * @intval3: set to TEST_UC_PDATA_INTVAL3 in .post_bind method of test uclass
+ */
+struct dm_test_perdev_uc_pdata {
+	int intval1;
+	int intval2;
+	int intval3;
+};
+
 /*
  * Operation counts for the test driver, used to check that each method is
  * called correctly

test/dm/core.c

@@ -129,6 +129,61 @@ static int dm_test_autobind(struct dm_test_state *dms)
 }
 DM_TEST(dm_test_autobind, 0);
 
+/* Test that binding with uclass platdata allocation occurs correctly */
+static int dm_test_autobind_uclass_pdata_alloc(struct dm_test_state *dms)
+{
+	struct dm_test_perdev_uc_pdata *uc_pdata;
+	struct udevice *dev;
+	struct uclass *uc;
+
+	ut_assertok(uclass_get(UCLASS_TEST, &uc));
+	ut_assert(uc);
+
+	/**
+	 * Test if test uclass driver requires allocation for the uclass
+	 * platform data and then check the dev->uclass_platdata pointer.
+	 */
+	ut_assert(uc->uc_drv->per_device_platdata_auto_alloc_size);
+
+	for (uclass_find_first_device(UCLASS_TEST, &dev);
+	     dev;
+	     uclass_find_next_device(&dev)) {
+		ut_assert(dev);
+
+		uc_pdata = dev_get_uclass_platdata(dev);
+		ut_assert(uc_pdata);
+	}
+
+	return 0;
+}
+DM_TEST(dm_test_autobind_uclass_pdata_alloc, DM_TESTF_SCAN_PDATA);
+
+/* Test that binding with uclass platdata setting occurs correctly */
+static int dm_test_autobind_uclass_pdata_valid(struct dm_test_state *dms)
+{
+	struct dm_test_perdev_uc_pdata *uc_pdata;
+	struct udevice *dev;
+
+	/**
+	 * In the test_postbind() method of test uclass driver, the uclass
+	 * platform data should be set to three test int values - test it.
+	 */
+	for (uclass_find_first_device(UCLASS_TEST, &dev);
+	     dev;
+	     uclass_find_next_device(&dev)) {
+		ut_assert(dev);
+
+		uc_pdata = dev_get_uclass_platdata(dev);
+		ut_assert(uc_pdata);
+		ut_assert(uc_pdata->intval1 == TEST_UC_PDATA_INTVAL1);
+		ut_assert(uc_pdata->intval2 == TEST_UC_PDATA_INTVAL2);
+		ut_assert(uc_pdata->intval3 == TEST_UC_PDATA_INTVAL3);
+	}
+
+	return 0;
+}
+DM_TEST(dm_test_autobind_uclass_pdata_valid, DM_TESTF_SCAN_PDATA);
+
 /* Test that autoprobe finds all the expected devices */
 static int dm_test_autoprobe(struct dm_test_state *dms)
 {

test/dm/test-uclass.c

@@ -30,9 +30,18 @@ int test_ping(struct udevice *dev, int pingval, int *pingret)
 
 static int test_post_bind(struct udevice *dev)
 {
+	struct dm_test_perdev_uc_pdata *uc_pdata;
+
 	dm_testdrv_op_count[DM_TEST_OP_POST_BIND]++;
 	ut_assert(!device_active(dev));
 
+	uc_pdata = dev_get_uclass_platdata(dev);
+	ut_assert(uc_pdata);
+
+	uc_pdata->intval1 = TEST_UC_PDATA_INTVAL1;
+	uc_pdata->intval2 = TEST_UC_PDATA_INTVAL2;
+	uc_pdata->intval3 = TEST_UC_PDATA_INTVAL3;
+
 	return 0;
 }
 
@@ -115,4 +124,6 @@ UCLASS_DRIVER(test) = {
 	.destroy	= test_destroy,
 	.priv_auto_alloc_size	= sizeof(struct dm_test_uclass_priv),
 	.per_device_auto_alloc_size = sizeof(struct dm_test_uclass_perdev_priv),
+	.per_device_platdata_auto_alloc_size =
+					sizeof(struct dm_test_perdev_uc_pdata),
 };