test: Move some test drivers into their own file

At present several test drivers are part of the test file itself. Some of
these are useful for of-platdata tests. Separate them out so we can use
them for other things also.

A few adjustments are needed so this driver can build for sandbox_spl as
well.

Signed-off-by: Simon Glass <sjg@chromium.org>

7 files changed, 263 insertions, 221 deletions

diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 29432ae..7d2a299 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -343,6 +343,15 @@ config TEGRA186_BPMP
 	  can make requests to the BPMP. This driver is similar to an MFD
 	  driver in the Linux kernel.
 
+config TEST_DRV
+	bool "Enable support for test drivers"
+	default y if SANDBOX
+	help
+	  This enables drivers and uclasses that provides a way of testing the
+	  operations of memory allocation and driver/uclass methods in driver
+	  model. This should only be enabled for testing as it is not useful for
+	  anything else.
+
 config TWL4030_LED
 	bool "Enable TWL4030 LED controller"
 	help
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 947bd3a..d737203 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -67,6 +67,7 @@ obj-$(CONFIG_STM32_RCC) += stm32_rcc.o
 obj-$(CONFIG_SYS_DPAA_QBMAN) += fsl_portals.o
 obj-$(CONFIG_TEGRA186_BPMP) += tegra186_bpmp.o
 obj-$(CONFIG_TEGRA_CAR) += tegra_car.o
+obj-$(CONFIG_TEST_DRV) += test_drv.o
 obj-$(CONFIG_TWL4030_LED) += twl4030_led.o
 obj-$(CONFIG_VEXPRESS_CONFIG) += vexpress_config.o
 obj-$(CONFIG_WINBOND_W83627) += winbond_w83627.o
diff --git a/drivers/misc/test_drv.c b/drivers/misc/test_drv.c
new file mode 100644
index 0000000..7dd3de3
--- /dev/null
+++ b/drivers/misc/test_drv.c
@@ -0,0 +1,222 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2014 Google, Inc
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <dm/test.h>
+
+/* Records the last testbus device that was removed */
+static struct udevice *testbus_removed;
+
+struct udevice *testbus_get_clear_removed(void)
+{
+	struct udevice *removed = testbus_removed;
+
+	testbus_removed = NULL;
+
+	return removed;
+}
+
+static int testbus_drv_probe(struct udevice *dev)
+{
+	if (!CONFIG_IS_ENABLED(OF_PLATDATA)) {
+		int ret;
+
+		ret = dm_scan_fdt_dev(dev);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int testbus_child_post_bind(struct udevice *dev)
+{
+	struct dm_test_parent_plat *plat;
+
+	plat = dev_get_parent_plat(dev);
+	plat->bind_flag = 1;
+	plat->uclass_bind_flag = 2;
+
+	return 0;
+}
+
+static int testbus_child_pre_probe(struct udevice *dev)
+{
+	struct dm_test_parent_data *parent_data = dev_get_parent_priv(dev);
+
+	parent_data->flag += TEST_FLAG_CHILD_PROBED;
+
+	return 0;
+}
+
+static int testbus_child_pre_probe_uclass(struct udevice *dev)
+{
+	struct dm_test_priv *priv = dev_get_priv(dev);
+
+	priv->uclass_flag++;
+
+	return 0;
+}
+
+static int testbus_child_post_probe_uclass(struct udevice *dev)
+{
+	struct dm_test_priv *priv = dev_get_priv(dev);
+
+	priv->uclass_postp++;
+
+	return 0;
+}
+
+static int testbus_child_post_remove(struct udevice *dev)
+{
+	struct dm_test_parent_data *parent_data = dev_get_parent_priv(dev);
+
+	parent_data->flag += TEST_FLAG_CHILD_REMOVED;
+	testbus_removed = dev;
+
+	return 0;
+}
+
+static const struct udevice_id testbus_ids[] = {
+	{ .compatible = "denx,u-boot-test-bus", .data = DM_TEST_TYPE_FIRST },
+	{ }
+};
+
+U_BOOT_DRIVER(testbus_drv) = {
+	.name	= "testbus_drv",
+	.of_match	= testbus_ids,
+	.id	= UCLASS_TEST_BUS,
+	.probe	= testbus_drv_probe,
+	.child_post_bind = testbus_child_post_bind,
+	.priv_auto	= sizeof(struct dm_test_priv),
+	.plat_auto	= sizeof(struct dm_test_pdata),
+	.per_child_auto	= sizeof(struct dm_test_parent_data),
+	.per_child_plat_auto	= sizeof(struct dm_test_parent_plat),
+	.child_pre_probe = testbus_child_pre_probe,
+	.child_post_remove = testbus_child_post_remove,
+};
+
+UCLASS_DRIVER(testbus) = {
+	.name		= "testbus",
+	.id		= UCLASS_TEST_BUS,
+	.flags		= DM_UC_FLAG_SEQ_ALIAS,
+	.child_pre_probe = testbus_child_pre_probe_uclass,
+	.child_post_probe = testbus_child_post_probe_uclass,
+};
+
+static int testfdt_drv_ping(struct udevice *dev, int pingval, int *pingret)
+{
+	const struct dm_test_pdata *pdata = dev_get_plat(dev);
+	struct dm_test_priv *priv = dev_get_priv(dev);
+
+	*pingret = pingval + pdata->ping_add;
+	priv->ping_total += *pingret;
+
+	return 0;
+}
+
+static const struct test_ops test_ops = {
+	.ping = testfdt_drv_ping,
+};
+
+static int testfdt_of_to_plat(struct udevice *dev)
+{
+	struct dm_test_pdata *pdata = dev_get_plat(dev);
+
+	pdata->ping_add = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev),
+					 "ping-add", -1);
+	pdata->base = fdtdec_get_addr(gd->fdt_blob, dev_of_offset(dev),
+				      "ping-expect");
+
+	return 0;
+}
+
+static int testfdt_drv_probe(struct udevice *dev)
+{
+	struct dm_test_priv *priv = dev_get_priv(dev);
+
+	priv->ping_total += DM_TEST_START_TOTAL;
+
+	/*
+	 * If this device is on a bus, the uclass_flag will be set before
+	 * calling this function. In the meantime the uclass_postp is
+	 * initlized to a value -1. These are used respectively by
+	 * dm_test_bus_child_pre_probe_uclass() and
+	 * dm_test_bus_child_post_probe_uclass().
+	 */
+	priv->uclass_total += priv->uclass_flag;
+	priv->uclass_postp = -1;
+
+	return 0;
+}
+
+static const struct udevice_id testfdt_ids[] = {
+	{ .compatible = "denx,u-boot-fdt-test", .data = DM_TEST_TYPE_FIRST },
+	{ .compatible = "google,another-fdt-test", .data = DM_TEST_TYPE_SECOND },
+	{ }
+};
+
+U_BOOT_DRIVER(testfdt_drv) = {
+	.name	= "testfdt_drv",
+	.of_match	= testfdt_ids,
+	.id	= UCLASS_TEST_FDT,
+	.of_to_plat = testfdt_of_to_plat,
+	.probe	= testfdt_drv_probe,
+	.ops	= &test_ops,
+	.priv_auto	= sizeof(struct dm_test_priv),
+	.plat_auto	= sizeof(struct dm_test_pdata),
+};
+
+static const struct udevice_id testfdt1_ids[] = {
+	{ .compatible = "denx,u-boot-fdt-test1", .data = DM_TEST_TYPE_FIRST },
+	{ }
+};
+
+U_BOOT_DRIVER(testfdt1_drv) = {
+	.name	= "testfdt1_drv",
+	.of_match	= testfdt1_ids,
+	.id	= UCLASS_TEST_FDT,
+	.of_to_plat = testfdt_of_to_plat,
+	.probe	= testfdt_drv_probe,
+	.ops	= &test_ops,
+	.priv_auto	= sizeof(struct dm_test_priv),
+	.plat_auto	= sizeof(struct dm_test_pdata),
+	.flags = DM_FLAG_PRE_RELOC,
+};
+
+/* From here is the testfdt uclass code */
+int testfdt_ping(struct udevice *dev, int pingval, int *pingret)
+{
+	const struct test_ops *ops = device_get_ops(dev);
+
+	if (!ops->ping)
+		return -ENOSYS;
+
+	return ops->ping(dev, pingval, pingret);
+}
+
+UCLASS_DRIVER(testfdt) = {
+	.name		= "testfdt",
+	.id		= UCLASS_TEST_FDT,
+	.flags		= DM_UC_FLAG_SEQ_ALIAS,
+};
+
+static const struct udevice_id testfdtm_ids[] = {
+	{ .compatible = "denx,u-boot-fdtm-test" },
+	{ }
+};
+
+U_BOOT_DRIVER(testfdtm_drv) = {
+	.name	= "testfdtm_drv",
+	.of_match	= testfdtm_ids,
+	.id	= UCLASS_TEST_FDT_MANUAL,
+};
+
+UCLASS_DRIVER(testfdtm) = {
+	.name		= "testfdtm",
+	.id		= UCLASS_TEST_FDT_MANUAL,
+	.flags		= DM_UC_FLAG_SEQ_ALIAS | DM_UC_FLAG_NO_AUTO_SEQ,
+};
diff --git a/include/dm/test.h b/include/dm/test.h
index cbe1b57..6ac6672 100644
--- a/include/dm/test.h
+++ b/include/dm/test.h
@@ -167,6 +167,24 @@ struct sandbox_sdl_plat {
 	int font_size;
 };
 
+/**
+ * struct dm_test_parent_plat - Used to track state in bus tests
+ *
+ * @count:
+ * @bind_flag: Indicates that the child post-bind method was called
+ * @uclass_bind_flag: Also indicates that the child post-bind method was called
+ */
+struct dm_test_parent_plat {
+	int count;
+	int bind_flag;
+	int uclass_bind_flag;
+};
+
+enum {
+	TEST_FLAG_CHILD_PROBED	= 10,
+	TEST_FLAG_CHILD_REMOVED	= -7,
+};
+
 /* Declare ping methods for the drivers */
 int test_ping(struct udevice *dev, int pingval, int *pingret);
 int testfdt_ping(struct udevice *dev, int pingval, int *pingret);
diff --git a/include/test/test.h b/include/test/test.h
index 03e2929..3fdaa2b 100644
--- a/include/test/test.h
+++ b/include/test/test.h
@@ -95,6 +95,15 @@ enum {
 };
 
 /**
+ * testbus_get_clear_removed() - Test function to obtain removed device
+ *
+ * This is used in testbus to find out which device was removed. Calling this
+ * function returns a pointer to the device and then clears it back to NULL, so
+ * that a future test can check it.
+ */
+struct udevice *testbus_get_clear_removed(void);
+
+/**
  * dm_test_main() - Run driver model tests
  *
  * Run all the available driver model tests, or a selection
diff --git a/test/dm/bus.c b/test/dm/bus.c
index b95c106..785ccfc 100644
--- a/test/dm/bus.c
+++ b/test/dm/bus.c
@@ -19,102 +19,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-struct dm_test_parent_plat {
-	int count;
-	int bind_flag;
-	int uclass_bind_flag;
-};
-
-enum {
-	FLAG_CHILD_PROBED	= 10,
-	FLAG_CHILD_REMOVED	= -7,
-};
-
-/* Records the last testbus device that was removed */
-static struct udevice *testbus_removed;
-
-static int testbus_drv_probe(struct udevice *dev)
-{
-	return dm_scan_fdt_dev(dev);
-}
-
-static int testbus_child_post_bind(struct udevice *dev)
-{
-	struct dm_test_parent_plat *plat;
-
-	plat = dev_get_parent_plat(dev);
-	plat->bind_flag = 1;
-	plat->uclass_bind_flag = 2;
-
-	return 0;
-}
-
-static int testbus_child_pre_probe(struct udevice *dev)
-{
-	struct dm_test_parent_data *parent_data = dev_get_parent_priv(dev);
-
-	parent_data->flag += FLAG_CHILD_PROBED;
-
-	return 0;
-}
-
-static int testbus_child_pre_probe_uclass(struct udevice *dev)
-{
-	struct dm_test_priv *priv = dev_get_priv(dev);
-
-	priv->uclass_flag++;
-
-	return 0;
-}
-
-static int testbus_child_post_probe_uclass(struct udevice *dev)
-{
-	struct dm_test_priv *priv = dev_get_priv(dev);
-
-	priv->uclass_postp++;
-
-	return 0;
-}
-
-static int testbus_child_post_remove(struct udevice *dev)
-{
-	struct dm_test_parent_data *parent_data = dev_get_parent_priv(dev);
-
-	parent_data->flag += FLAG_CHILD_REMOVED;
-	testbus_removed = dev;
-
-	return 0;
-}
-
-static const struct udevice_id testbus_ids[] = {
-	{
-		.compatible = "denx,u-boot-test-bus",
-		.data = DM_TEST_TYPE_FIRST },
-	{ }
-};
-
-U_BOOT_DRIVER(testbus_drv) = {
-	.name	= "testbus_drv",
-	.of_match	= testbus_ids,
-	.id	= UCLASS_TEST_BUS,
-	.probe	= testbus_drv_probe,
-	.child_post_bind = testbus_child_post_bind,
-	.priv_auto	= sizeof(struct dm_test_priv),
-	.plat_auto	= sizeof(struct dm_test_pdata),
-	.per_child_auto	= sizeof(struct dm_test_parent_data),
-	.per_child_plat_auto	= sizeof(struct dm_test_parent_plat),
-	.child_pre_probe = testbus_child_pre_probe,
-	.child_post_remove = testbus_child_post_remove,
-};
-
-UCLASS_DRIVER(testbus) = {
-	.name		= "testbus",
-	.id		= UCLASS_TEST_BUS,
-	.flags		= DM_UC_FLAG_SEQ_ALIAS,
-	.child_pre_probe = testbus_child_pre_probe_uclass,
-	.child_post_probe = testbus_child_post_probe_uclass,
-};
-
 /* Test that we can probe for children */
 static int dm_test_bus_children(struct unit_test_state *uts)
 {
@@ -337,7 +241,7 @@ static int dm_test_bus_parent_ops(struct unit_test_state *uts)
 	struct udevice *bus, *dev;
 	struct uclass *uc;
 
-	testbus_removed = NULL;
+	testbus_get_clear_removed();
 	ut_assertok(uclass_get_device(UCLASS_TEST_BUS, 0, &bus));
 	ut_assertok(uclass_get(UCLASS_TEST_FDT, &uc));
 
@@ -349,7 +253,7 @@ static int dm_test_bus_parent_ops(struct unit_test_state *uts)
 
 		ut_assertok(device_probe(dev));
 		parent_data = dev_get_parent_priv(dev);
-		ut_asserteq(FLAG_CHILD_PROBED, parent_data->flag);
+		ut_asserteq(TEST_FLAG_CHILD_PROBED, parent_data->flag);
 	}
 
 	uclass_foreach_dev(dev, uc) {
@@ -357,12 +261,11 @@ static int dm_test_bus_parent_ops(struct unit_test_state *uts)
 		if (dev->parent != bus)
 			continue;
 		parent_data = dev_get_parent_priv(dev);
-		ut_asserteq(FLAG_CHILD_PROBED, parent_data->flag);
+		ut_asserteq(TEST_FLAG_CHILD_PROBED, parent_data->flag);
 		ut_assertok(device_remove(dev, DM_REMOVE_NORMAL));
 		ut_asserteq_ptr(NULL, dev_get_parent_priv(dev));
-		ut_asserteq_ptr(testbus_removed, dev);
+		ut_asserteq_ptr(testbus_get_clear_removed(), dev);
 	}
-	testbus_removed = NULL;
 
 	return 0;
 }
diff --git a/test/dm/test-fdt.c b/test/dm/test-fdt.c
index 9e8c290..6332568 100644
--- a/test/dm/test-fdt.c
+++ b/test/dm/test-fdt.c
@@ -23,126 +23,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-static int testfdt_drv_ping(struct udevice *dev, int pingval, int *pingret)
-{
-	const struct dm_test_pdata *pdata = dev_get_plat(dev);
-	struct dm_test_priv *priv = dev_get_priv(dev);
-
-	*pingret = pingval + pdata->ping_add;
-	priv->ping_total += *pingret;
-
-	return 0;
-}
-
-static const struct test_ops test_ops = {
-	.ping = testfdt_drv_ping,
-};
-
-static int testfdt_of_to_plat(struct udevice *dev)
-{
-	struct dm_test_pdata *pdata = dev_get_plat(dev);
-
-	pdata->ping_add = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev),
-					"ping-add", -1);
-	pdata->base = fdtdec_get_addr(gd->fdt_blob, dev_of_offset(dev),
-				      "ping-expect");
-
-	return 0;
-}
-
-static int testfdt_drv_probe(struct udevice *dev)
-{
-	struct dm_test_priv *priv = dev_get_priv(dev);
-
-	priv->ping_total += DM_TEST_START_TOTAL;
-
-	/*
-	 * If this device is on a bus, the uclass_flag will be set before
-	 * calling this function. In the meantime the uclass_postp is
-	 * initlized to a value -1. These are used respectively by
-	 * dm_test_bus_child_pre_probe_uclass() and
-	 * dm_test_bus_child_post_probe_uclass().
-	 */
-	priv->uclass_total += priv->uclass_flag;
-	priv->uclass_postp = -1;
-
-	return 0;
-}
-
-static const struct udevice_id testfdt_ids[] = {
-	{
-		.compatible = "denx,u-boot-fdt-test",
-		.data = DM_TEST_TYPE_FIRST },
-	{
-		.compatible = "google,another-fdt-test",
-		.data = DM_TEST_TYPE_SECOND },
-	{ }
-};
-
-U_BOOT_DRIVER(testfdt_drv) = {
-	.name	= "testfdt_drv",
-	.of_match	= testfdt_ids,
-	.id	= UCLASS_TEST_FDT,
-	.of_to_plat = testfdt_of_to_plat,
-	.probe	= testfdt_drv_probe,
-	.ops	= &test_ops,
-	.priv_auto	= sizeof(struct dm_test_priv),
-	.plat_auto	= sizeof(struct dm_test_pdata),
-};
-
-static const struct udevice_id testfdt1_ids[] = {
-	{
-		.compatible = "denx,u-boot-fdt-test1",
-		.data = DM_TEST_TYPE_FIRST },
-	{ }
-};
-
-U_BOOT_DRIVER(testfdt1_drv) = {
-	.name	= "testfdt1_drv",
-	.of_match	= testfdt1_ids,
-	.id	= UCLASS_TEST_FDT,
-	.of_to_plat = testfdt_of_to_plat,
-	.probe	= testfdt_drv_probe,
-	.ops	= &test_ops,
-	.priv_auto	= sizeof(struct dm_test_priv),
-	.plat_auto	= sizeof(struct dm_test_pdata),
-	.flags = DM_FLAG_PRE_RELOC,
-};
-
-/* From here is the testfdt uclass code */
-int testfdt_ping(struct udevice *dev, int pingval, int *pingret)
-{
-	const struct test_ops *ops = device_get_ops(dev);
-
-	if (!ops->ping)
-		return -ENOSYS;
-
-	return ops->ping(dev, pingval, pingret);
-}
-
-UCLASS_DRIVER(testfdt) = {
-	.name		= "testfdt",
-	.id		= UCLASS_TEST_FDT,
-	.flags		= DM_UC_FLAG_SEQ_ALIAS,
-};
-
-static const struct udevice_id testfdtm_ids[] = {
-	{ .compatible = "denx,u-boot-fdtm-test" },
-	{ }
-};
-
-U_BOOT_DRIVER(testfdtm_drv) = {
-	.name	= "testfdtm_drv",
-	.of_match	= testfdtm_ids,
-	.id	= UCLASS_TEST_FDT_MANUAL,
-};
-
-UCLASS_DRIVER(testfdtm) = {
-	.name		= "testfdtm",
-	.id		= UCLASS_TEST_FDT_MANUAL,
-	.flags		= DM_UC_FLAG_SEQ_ALIAS | DM_UC_FLAG_NO_AUTO_SEQ,
-};
-
 struct dm_testprobe_pdata {
 	int probe_err;
 };