test: Add tests for SOC uclass

Add a sandbox SOC driver, and some tests for the SOC uclass.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>

arch/sandbox/dts/test.dts

@@ -521,6 +521,10 @@
 		};
 	};
 
+	chipid: chipid {
+		compatible = "sandbox,soc";
+	};
+
 	i2s: i2s {
 		compatible = "sandbox,i2s";
 		#sound-dai-cells = <1>;

configs/sandbox64_defconfig

@@ -118,6 +118,7 @@ CONFIG_LED_GPIO=y
 CONFIG_DM_MAILBOX=y
 CONFIG_SANDBOX_MBOX=y
 CONFIG_MISC=y
+CONFIG_SOC_DEVICE=y
 CONFIG_CROS_EC=y
 CONFIG_CROS_EC_I2C=y
 CONFIG_CROS_EC_LPC=y

configs/sandbox_defconfig

@@ -139,6 +139,7 @@ CONFIG_LED_GPIO=y
 CONFIG_DM_MAILBOX=y
 CONFIG_SANDBOX_MBOX=y
 CONFIG_MISC=y
+CONFIG_SOC_DEVICE=y
 CONFIG_CROS_EC=y
 CONFIG_CROS_EC_I2C=y
 CONFIG_CROS_EC_LPC=y

configs/sandbox_flattree_defconfig

@@ -103,6 +103,7 @@ CONFIG_LED_GPIO=y
 CONFIG_DM_MAILBOX=y
 CONFIG_SANDBOX_MBOX=y
 CONFIG_MISC=y
+CONFIG_SOC_DEVICE=y
 CONFIG_CROS_EC=y
 CONFIG_CROS_EC_I2C=y
 CONFIG_CROS_EC_LPC=y

configs/sandbox_spl_defconfig

@@ -120,6 +120,7 @@ CONFIG_LED_GPIO=y
 CONFIG_DM_MAILBOX=y
 CONFIG_SANDBOX_MBOX=y
 CONFIG_MISC=y
+CONFIG_SOC_DEVICE=y
 CONFIG_CROS_EC=y
 CONFIG_CROS_EC_I2C=y
 CONFIG_CROS_EC_LPC=y

drivers/soc/Makefile

@@ -4,3 +4,4 @@
 
 obj-$(CONFIG_SOC_TI) += ti/
 obj-$(CONFIG_SOC_DEVICE) += soc-uclass.o
+obj-$(CONFIG_SANDBOX) += soc_sandbox.o

drivers/soc/soc_sandbox.c

@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Sandbox driver for the SOC uclass
+ *
+ * (C) Copyright 2020 - Texas Instruments Incorporated - http://www.ti.com/
+ * Dave Gerlach <d-gerlach@ti.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <soc.h>
+
+int soc_sandbox_get_family(struct udevice *dev, char *buf, int size)
+{
+	snprintf(buf, size, "SANDBOX1xx");
+
+	return 0;
+}
+
+int soc_sandbox_get_machine(struct udevice *dev, char *buf, int size)
+{
+	snprintf(buf, size, "SANDBOX123");
+
+	return 0;
+}
+
+int soc_sandbox_get_revision(struct udevice *dev, char *buf, int size)
+{
+	snprintf(buf, size, "1.0");
+
+	return 0;
+}
+
+static const struct soc_ops soc_sandbox_ops = {
+	.get_family = soc_sandbox_get_family,
+	.get_revision = soc_sandbox_get_revision,
+	.get_machine = soc_sandbox_get_machine,
+};
+
+int soc_sandbox_probe(struct udevice *dev)
+{
+	return 0;
+}
+
+static const struct udevice_id soc_sandbox_ids[] = {
+	{ .compatible = "sandbox,soc" },
+	{ }
+};
+
+U_BOOT_DRIVER(soc_sandbox) = {
+	.name           = "soc_sandbox",
+	.id             = UCLASS_SOC,
+	.ops		= &soc_sandbox_ops,
+	.of_match       = soc_sandbox_ids,
+	.probe          = soc_sandbox_probe,
+};

test/dm/Makefile

@@ -68,6 +68,7 @@ obj-$(CONFIG_AXI) += axi.o
 obj-$(CONFIG_MISC) += misc.o
 obj-$(CONFIG_DM_SERIAL) += serial.o
 obj-$(CONFIG_CPU) += cpu.o
+obj-$(CONFIG_SOC_DEVICE) += soc.o
 obj-$(CONFIG_SOUND) += sound.o
 obj-$(CONFIG_TEE) += tee.o
 obj-$(CONFIG_VIRTIO_SANDBOX) += virtio.o

test/dm/soc.c

@@ -0,0 +1,120 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Test for the SOC uclass
+ *
+ * (C) Copyright 2020 - Texas Instruments Incorporated - http://www.ti.com/
+ *	Dave Gerlach <d-gerlach@ti.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <dm/test.h>
+#include <dm/uclass-internal.h>
+#include <soc.h>
+#include <test/ut.h>
+
+struct sb_soc_data {
+	unsigned long param;
+};
+
+static int dm_test_soc(struct unit_test_state *uts)
+{
+	struct udevice *dev;
+	char text[128];
+	const struct soc_attr *soc_data;
+	const struct sb_soc_data *match_data;
+
+	static const struct sb_soc_data soc_sandbox1_sr10_data = { 0x91919191 };
+	static const struct sb_soc_data soc_sandbox123_data    = { 0x84848484 };
+
+	static const struct soc_attr sb_soc_devices_full[] = {
+		{
+			.family = "SANDBOX0xx",
+			.machine = "SANDBOX012",
+			.revision = "1.0",
+			.data = NULL,
+		},
+		{
+			.family = "SANDBOX1xx",
+			.machine = "SANDBOX107",
+			.revision = "1.0",
+			.data = NULL,
+		},
+		{
+			.family = "SANDBOX1xx",
+			.machine = "SANDBOX123",
+			.revision = "1.0",
+			.data = &soc_sandbox123_data,
+		},
+		{
+			.family = "SANDBOX1xx",
+			.machine = "SANDBOX131",
+			.revision = "2.0",
+			.data = NULL,
+		},
+		{ /* sentinel */ }
+	};
+
+	static const struct soc_attr sb_soc_devices_partial[] = {
+		{
+			.family = "SANDBOX0xx",
+			.revision = "1.0",
+			.data = NULL,
+		},
+		{
+			.family = "SANDBOX1xx",
+			.revision = "1.0",
+			.data = &soc_sandbox1_sr10_data,
+		},
+		{
+			.family = "SANDBOX1xx",
+			.revision = "2.0",
+			.data = NULL,
+		},
+		{ /* sentinel */ }
+	};
+
+	static const struct soc_attr sb_soc_devices_nomatch[] = {
+		{
+			.family = "SANDBOX0xx",
+			.revision = "1.0",
+			.data = NULL,
+		},
+		{
+			.family = "SANDBOX1xx",
+			.revision = "2.0",
+			.data = NULL,
+		},
+		{ /* sentinel */ }
+	};
+
+	ut_assertok(soc_get(&dev));
+
+	ut_assertok(soc_get_machine(dev, text, sizeof(text)));
+	ut_assertok(strcmp(text, "SANDBOX123"));
+
+	ut_assertok(soc_get_family(dev, text, sizeof(text)));
+	ut_assertok(strcmp(text, "SANDBOX1xx"));
+
+	ut_assertok(soc_get_revision(dev, text, sizeof(text)));
+	ut_asserteq_str(text, "1.0");
+
+	soc_data = soc_device_match(sb_soc_devices_full);
+	ut_assert(soc_data);
+
+	match_data = soc_data->data;
+	ut_asserteq(match_data->param, 0x84848484);
+
+	soc_data = soc_device_match(sb_soc_devices_partial);
+	ut_assert(soc_data);
+
+	match_data = soc_data->data;
+	ut_asserteq(match_data->param, 0x91919191);
+
+	soc_data = soc_device_match(sb_soc_devices_nomatch);
+	ut_asserteq_ptr(soc_data, NULL);
+
+	return 0;
+}
+
+DM_TEST(dm_test_soc, DM_TESTF_SCAN_FDT);