acpi: Add a simple sandbox test

Add a sandbox test for the basic ACPI functionality we have so far.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>

arch/sandbox/dts/test.dts

@@ -206,6 +206,10 @@
 		compatible = "denx,u-boot-devres-test";
 	};
 
+	acpi-test {
+		compatible = "denx,u-boot-acpi-test";
+	};
+
 	clocks {
 		clk_fixed: clk-fixed {
 			compatible = "fixed-clock";

arch/sandbox/include/asm/acpi_table.h

@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2019 Google LLC
+ */
+
+#ifndef __ASM_ACPI_TABLE_H__
+#define __ASM_ACPI_TABLE_H__
+
+#endif /* __ASM_ACPI_TABLE_H__ */

include/dm/uclass-id.h

@@ -20,6 +20,7 @@ enum uclass_id {
 	UCLASS_TEST_PROBE,
 	UCLASS_TEST_DUMMY,
 	UCLASS_TEST_DEVRES,
+	UCLASS_TEST_ACPI,
 	UCLASS_SPI_EMUL,	/* sandbox SPI device emulator */
 	UCLASS_I2C_EMUL,	/* sandbox I2C device emulator */
 	UCLASS_I2C_EMUL_PARENT,	/* parent for I2C device emulators */

test/dm/Makefile

@@ -13,6 +13,7 @@ obj-$(CONFIG_UT_DM) += test-uclass.o
 # subsystem you must add sandbox tests here.
 obj-$(CONFIG_UT_DM) += core.o
 ifneq ($(CONFIG_SANDBOX),)
+obj-$(CONFIG_ACPIGEN) += acpi.o
 obj-$(CONFIG_SOUND) += audio.o
 obj-$(CONFIG_BLK) += blk.o
 obj-$(CONFIG_BOARD) += board.o

test/dm/acpi.c

@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Tests for ACPI table generation
+ *
+ * Copyright 2019 Google LLC
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <dm/acpi.h>
+#include <dm/test.h>
+#include <test/ut.h>
+
+#define ACPI_TEST_DEV_NAME	"ABCD"
+
+static int testacpi_get_name(const struct udevice *dev, char *out_name)
+{
+	return acpi_copy_name(out_name, ACPI_TEST_DEV_NAME);
+}
+
+struct acpi_ops testacpi_ops = {
+	.get_name	= testacpi_get_name,
+};
+
+static const struct udevice_id testacpi_ids[] = {
+	{ .compatible = "denx,u-boot-acpi-test" },
+	{ }
+};
+
+U_BOOT_DRIVER(testacpi_drv) = {
+	.name	= "testacpi_drv",
+	.of_match	= testacpi_ids,
+	.id	= UCLASS_TEST_ACPI,
+	ACPI_OPS_PTR(&testacpi_ops)
+};
+
+UCLASS_DRIVER(testacpi) = {
+	.name		= "testacpi",
+	.id		= UCLASS_TEST_ACPI,
+};
+
+/* Test ACPI get_name() */
+static int dm_test_acpi_get_name(struct unit_test_state *uts)
+{
+	char name[ACPI_NAME_MAX];
+	struct udevice *dev;
+
+	ut_assertok(uclass_first_device_err(UCLASS_TEST_ACPI, &dev));
+	ut_assertok(acpi_get_name(dev, name));
+	ut_asserteq_str(ACPI_TEST_DEV_NAME, name);
+
+	return 0;
+}
+DM_TEST(dm_test_acpi_get_name, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);