CoCalc -- property-entry-test.c

GitHub Repository: torvalds/linux
Path: blob/master/drivers/base/test/property-entry-test.c
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// SPDX-License-Identifier: GPL-2.0
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// Unit tests for property entries API
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//
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// Copyright 2019 Google LLC.
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#include <kunit/test.h>
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#include <linux/property.h>
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#include <linux/types.h>
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static void pe_test_uints(struct kunit *test)
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{
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	static const struct property_entry entries[] = {
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		PROPERTY_ENTRY_U8("prop-u8", 8),
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		PROPERTY_ENTRY_U16("prop-u16", 16),
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		PROPERTY_ENTRY_U32("prop-u32", 32),
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		PROPERTY_ENTRY_U64("prop-u64", 64),
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		{ }
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	};
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	struct fwnode_handle *node;
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	u8 val_u8, array_u8[2];
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	u16 val_u16, array_u16[2];
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	u32 val_u32, array_u32[2];
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	u64 val_u64, array_u64[2];
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	int error;
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	node = fwnode_create_software_node(entries, NULL);
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	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, node);
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	error = fwnode_property_count_u8(node, "prop-u8");
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	KUNIT_EXPECT_EQ(test, error, 1);
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	error = fwnode_property_read_u8(node, "prop-u8", &val_u8);
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	KUNIT_EXPECT_EQ(test, error, 0);
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	KUNIT_EXPECT_EQ(test, val_u8, 8);
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	error = fwnode_property_read_u8_array(node, "prop-u8", array_u8, 1);
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	KUNIT_EXPECT_EQ(test, error, 0);
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	KUNIT_EXPECT_EQ(test, array_u8[0], 8);
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	error = fwnode_property_read_u8_array(node, "prop-u8", array_u8, 2);
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	KUNIT_EXPECT_NE(test, error, 0);
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	error = fwnode_property_read_u8(node, "no-prop-u8", &val_u8);
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	KUNIT_EXPECT_NE(test, error, 0);
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	error = fwnode_property_read_u8_array(node, "no-prop-u8", array_u8, 1);
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	KUNIT_EXPECT_NE(test, error, 0);
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	error = fwnode_property_read_u16(node, "prop-u16", &val_u16);
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	KUNIT_EXPECT_EQ(test, error, 0);
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	KUNIT_EXPECT_EQ(test, val_u16, 16);
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	error = fwnode_property_count_u16(node, "prop-u16");
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	KUNIT_EXPECT_EQ(test, error, 1);
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	error = fwnode_property_read_u16_array(node, "prop-u16", array_u16, 1);
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	KUNIT_EXPECT_EQ(test, error, 0);
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	KUNIT_EXPECT_EQ(test, array_u16[0], 16);
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	error = fwnode_property_read_u16_array(node, "prop-u16", array_u16, 2);
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	KUNIT_EXPECT_NE(test, error, 0);
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	error = fwnode_property_read_u16(node, "no-prop-u16", &val_u16);
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	KUNIT_EXPECT_NE(test, error, 0);
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	error = fwnode_property_read_u16_array(node, "no-prop-u16", array_u16, 1);
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	KUNIT_EXPECT_NE(test, error, 0);
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	error = fwnode_property_read_u32(node, "prop-u32", &val_u32);
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	KUNIT_EXPECT_EQ(test, error, 0);
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	KUNIT_EXPECT_EQ(test, val_u32, 32);
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	error = fwnode_property_count_u32(node, "prop-u32");
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	KUNIT_EXPECT_EQ(test, error, 1);
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	error = fwnode_property_read_u32_array(node, "prop-u32", array_u32, 1);
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	KUNIT_EXPECT_EQ(test, error, 0);
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	KUNIT_EXPECT_EQ(test, array_u32[0], 32);
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	error = fwnode_property_read_u32_array(node, "prop-u32", array_u32, 2);
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	KUNIT_EXPECT_NE(test, error, 0);
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	error = fwnode_property_read_u32(node, "no-prop-u32", &val_u32);
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	KUNIT_EXPECT_NE(test, error, 0);
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	error = fwnode_property_read_u32_array(node, "no-prop-u32", array_u32, 1);
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	KUNIT_EXPECT_NE(test, error, 0);
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	error = fwnode_property_read_u64(node, "prop-u64", &val_u64);
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	KUNIT_EXPECT_EQ(test, error, 0);
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	KUNIT_EXPECT_EQ(test, val_u64, 64);
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	error = fwnode_property_count_u64(node, "prop-u64");
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	KUNIT_EXPECT_EQ(test, error, 1);
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	error = fwnode_property_read_u64_array(node, "prop-u64", array_u64, 1);
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	KUNIT_EXPECT_EQ(test, error, 0);
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	KUNIT_EXPECT_EQ(test, array_u64[0], 64);
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	error = fwnode_property_read_u64_array(node, "prop-u64", array_u64, 2);
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	KUNIT_EXPECT_NE(test, error, 0);
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	error = fwnode_property_read_u64(node, "no-prop-u64", &val_u64);
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	KUNIT_EXPECT_NE(test, error, 0);
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	error = fwnode_property_read_u64_array(node, "no-prop-u64", array_u64, 1);
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	KUNIT_EXPECT_NE(test, error, 0);
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110
	/* Count 64-bit values as 16-bit */
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	error = fwnode_property_count_u16(node, "prop-u64");
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	KUNIT_EXPECT_EQ(test, error, 4);
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114
	fwnode_remove_software_node(node);
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}
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static void pe_test_uint_arrays(struct kunit *test)
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{
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	static const u8 a_u8[10] = { 8, 9 };
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	static const u16 a_u16[10] = { 16, 17 };
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	static const u32 a_u32[10] = { 32, 33 };
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	static const u64 a_u64[10] = { 64, 65 };
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	static const struct property_entry entries[] = {
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		PROPERTY_ENTRY_U8_ARRAY("prop-u8", a_u8),
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		PROPERTY_ENTRY_U16_ARRAY("prop-u16", a_u16),
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		PROPERTY_ENTRY_U32_ARRAY("prop-u32", a_u32),
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		PROPERTY_ENTRY_U64_ARRAY("prop-u64", a_u64),
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		{ }
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	};
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131
	struct fwnode_handle *node;
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	u8 val_u8, array_u8[32];
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	u16 val_u16, array_u16[32];
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	u32 val_u32, array_u32[32];
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	u64 val_u64, array_u64[32];
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	int error;
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138
	node = fwnode_create_software_node(entries, NULL);
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	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, node);
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141
	error = fwnode_property_read_u8(node, "prop-u8", &val_u8);
142
	KUNIT_EXPECT_EQ(test, error, 0);
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	KUNIT_EXPECT_EQ(test, val_u8, 8);
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145
	error = fwnode_property_count_u8(node, "prop-u8");
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	KUNIT_EXPECT_EQ(test, error, 10);
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148
	error = fwnode_property_read_u8_array(node, "prop-u8", array_u8, 1);
149
	KUNIT_EXPECT_EQ(test, error, 0);
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	KUNIT_EXPECT_EQ(test, array_u8[0], 8);
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	error = fwnode_property_read_u8_array(node, "prop-u8", array_u8, 2);
153
	KUNIT_EXPECT_EQ(test, error, 0);
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	KUNIT_EXPECT_EQ(test, array_u8[0], 8);
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	KUNIT_EXPECT_EQ(test, array_u8[1], 9);
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157
	error = fwnode_property_read_u8_array(node, "prop-u8", array_u8, 17);
158
	KUNIT_EXPECT_NE(test, error, 0);
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160
	error = fwnode_property_read_u8(node, "no-prop-u8", &val_u8);
161
	KUNIT_EXPECT_NE(test, error, 0);
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163
	error = fwnode_property_read_u8_array(node, "no-prop-u8", array_u8, 1);
164
	KUNIT_EXPECT_NE(test, error, 0);
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	error = fwnode_property_read_u16(node, "prop-u16", &val_u16);
167
	KUNIT_EXPECT_EQ(test, error, 0);
168
	KUNIT_EXPECT_EQ(test, val_u16, 16);
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170
	error = fwnode_property_count_u16(node, "prop-u16");
171
	KUNIT_EXPECT_EQ(test, error, 10);
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173
	error = fwnode_property_read_u16_array(node, "prop-u16", array_u16, 1);
174
	KUNIT_EXPECT_EQ(test, error, 0);
175
	KUNIT_EXPECT_EQ(test, array_u16[0], 16);
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177
	error = fwnode_property_read_u16_array(node, "prop-u16", array_u16, 2);
178
	KUNIT_EXPECT_EQ(test, error, 0);
179
	KUNIT_EXPECT_EQ(test, array_u16[0], 16);
180
	KUNIT_EXPECT_EQ(test, array_u16[1], 17);
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182
	error = fwnode_property_read_u16_array(node, "prop-u16", array_u16, 17);
183
	KUNIT_EXPECT_NE(test, error, 0);
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185
	error = fwnode_property_read_u16(node, "no-prop-u16", &val_u16);
186
	KUNIT_EXPECT_NE(test, error, 0);
187

188
	error = fwnode_property_read_u16_array(node, "no-prop-u16", array_u16, 1);
189
	KUNIT_EXPECT_NE(test, error, 0);
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191
	error = fwnode_property_read_u32(node, "prop-u32", &val_u32);
192
	KUNIT_EXPECT_EQ(test, error, 0);
193
	KUNIT_EXPECT_EQ(test, val_u32, 32);
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195
	error = fwnode_property_count_u32(node, "prop-u32");
196
	KUNIT_EXPECT_EQ(test, error, 10);
197

198
	error = fwnode_property_read_u32_array(node, "prop-u32", array_u32, 1);
199
	KUNIT_EXPECT_EQ(test, error, 0);
200
	KUNIT_EXPECT_EQ(test, array_u32[0], 32);
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202
	error = fwnode_property_read_u32_array(node, "prop-u32", array_u32, 2);
203
	KUNIT_EXPECT_EQ(test, error, 0);
204
	KUNIT_EXPECT_EQ(test, array_u32[0], 32);
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	KUNIT_EXPECT_EQ(test, array_u32[1], 33);
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207
	error = fwnode_property_read_u32_array(node, "prop-u32", array_u32, 17);
208
	KUNIT_EXPECT_NE(test, error, 0);
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210
	error = fwnode_property_read_u32(node, "no-prop-u32", &val_u32);
211
	KUNIT_EXPECT_NE(test, error, 0);
212

213
	error = fwnode_property_read_u32_array(node, "no-prop-u32", array_u32, 1);
214
	KUNIT_EXPECT_NE(test, error, 0);
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216
	error = fwnode_property_read_u64(node, "prop-u64", &val_u64);
217
	KUNIT_EXPECT_EQ(test, error, 0);
218
	KUNIT_EXPECT_EQ(test, val_u64, 64);
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220
	error = fwnode_property_count_u64(node, "prop-u64");
221
	KUNIT_EXPECT_EQ(test, error, 10);
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223
	error = fwnode_property_read_u64_array(node, "prop-u64", array_u64, 1);
224
	KUNIT_EXPECT_EQ(test, error, 0);
225
	KUNIT_EXPECT_EQ(test, array_u64[0], 64);
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227
	error = fwnode_property_read_u64_array(node, "prop-u64", array_u64, 2);
228
	KUNIT_EXPECT_EQ(test, error, 0);
229
	KUNIT_EXPECT_EQ(test, array_u64[0], 64);
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	KUNIT_EXPECT_EQ(test, array_u64[1], 65);
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232
	error = fwnode_property_read_u64_array(node, "prop-u64", array_u64, 17);
233
	KUNIT_EXPECT_NE(test, error, 0);
234

235
	error = fwnode_property_read_u64(node, "no-prop-u64", &val_u64);
236
	KUNIT_EXPECT_NE(test, error, 0);
237

238
	error = fwnode_property_read_u64_array(node, "no-prop-u64", array_u64, 1);
239
	KUNIT_EXPECT_NE(test, error, 0);
240

241
	/* Count 64-bit values as 16-bit */
242
	error = fwnode_property_count_u16(node, "prop-u64");
243
	KUNIT_EXPECT_EQ(test, error, 40);
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245
	/* Other way around */
246
	error = fwnode_property_count_u64(node, "prop-u16");
247
	KUNIT_EXPECT_EQ(test, error, 2);
248

249
	fwnode_remove_software_node(node);
250
}
251

252
static void pe_test_strings(struct kunit *test)
253
{
254
	static const char *strings[] = {
255
		"string-a",
256
		"string-b",
257
	};
258

259
	static const struct property_entry entries[] = {
260
		PROPERTY_ENTRY_STRING("str", "single"),
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		PROPERTY_ENTRY_STRING("empty", ""),
262
		PROPERTY_ENTRY_STRING_ARRAY("strs", strings),
263
		{ }
264
	};
265

266
	struct fwnode_handle *node;
267
	const char *str;
268
	const char *strs[10];
269
	int error;
270

271
	node = fwnode_create_software_node(entries, NULL);
272
	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, node);
273

274
	error = fwnode_property_read_string(node, "str", &str);
275
	KUNIT_EXPECT_EQ(test, error, 0);
276
	KUNIT_EXPECT_STREQ(test, str, "single");
277

278
	error = fwnode_property_string_array_count(node, "str");
279
	KUNIT_EXPECT_EQ(test, error, 1);
280

281
	error = fwnode_property_read_string_array(node, "str", strs, 1);
282
	KUNIT_EXPECT_EQ(test, error, 1);
283
	KUNIT_EXPECT_STREQ(test, strs[0], "single");
284

285
	/* asking for more data returns what we have */
286
	error = fwnode_property_read_string_array(node, "str", strs, 2);
287
	KUNIT_EXPECT_EQ(test, error, 1);
288
	KUNIT_EXPECT_STREQ(test, strs[0], "single");
289

290
	error = fwnode_property_read_string(node, "no-str", &str);
291
	KUNIT_EXPECT_NE(test, error, 0);
292

293
	error = fwnode_property_read_string_array(node, "no-str", strs, 1);
294
	KUNIT_EXPECT_LT(test, error, 0);
295

296
	error = fwnode_property_read_string(node, "empty", &str);
297
	KUNIT_EXPECT_EQ(test, error, 0);
298
	KUNIT_EXPECT_STREQ(test, str, "");
299

300
	error = fwnode_property_string_array_count(node, "strs");
301
	KUNIT_EXPECT_EQ(test, error, 2);
302

303
	error = fwnode_property_read_string_array(node, "strs", strs, 3);
304
	KUNIT_EXPECT_EQ(test, error, 2);
305
	KUNIT_EXPECT_STREQ(test, strs[0], "string-a");
306
	KUNIT_EXPECT_STREQ(test, strs[1], "string-b");
307

308
	error = fwnode_property_read_string_array(node, "strs", strs, 1);
309
	KUNIT_EXPECT_EQ(test, error, 1);
310
	KUNIT_EXPECT_STREQ(test, strs[0], "string-a");
311

312
	/* NULL argument -> returns size */
313
	error = fwnode_property_read_string_array(node, "strs", NULL, 0);
314
	KUNIT_EXPECT_EQ(test, error, 2);
315

316
	/* accessing array as single value */
317
	error = fwnode_property_read_string(node, "strs", &str);
318
	KUNIT_EXPECT_EQ(test, error, 0);
319
	KUNIT_EXPECT_STREQ(test, str, "string-a");
320

321
	fwnode_remove_software_node(node);
322
}
323

324
static void pe_test_bool(struct kunit *test)
325
{
326
	static const struct property_entry entries[] = {
327
		PROPERTY_ENTRY_BOOL("prop"),
328
		{ }
329
	};
330

331
	struct fwnode_handle *node;
332

333
	node = fwnode_create_software_node(entries, NULL);
334
	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, node);
335

336
	KUNIT_EXPECT_TRUE(test, fwnode_property_read_bool(node, "prop"));
337
	KUNIT_EXPECT_FALSE(test, fwnode_property_read_bool(node, "not-prop"));
338

339
	fwnode_remove_software_node(node);
340
}
341

342
/* Verifies that small U8 array is stored inline when property is copied */
343
static void pe_test_move_inline_u8(struct kunit *test)
344
{
345
	static const u8 u8_array_small[8] = { 1, 2, 3, 4 };
346
	static const u8 u8_array_big[128] = { 5, 6, 7, 8 };
347
	static const struct property_entry entries[] = {
348
		PROPERTY_ENTRY_U8_ARRAY("small", u8_array_small),
349
		PROPERTY_ENTRY_U8_ARRAY("big", u8_array_big),
350
		{ }
351
	};
352

353
	struct property_entry *copy;
354
	const u8 *data_ptr;
355

356
	copy = property_entries_dup(entries);
357
	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, copy);
358

359
	KUNIT_EXPECT_TRUE(test, copy[0].is_inline);
360
	data_ptr = (u8 *)&copy[0].value;
361
	KUNIT_EXPECT_EQ(test, data_ptr[0], 1);
362
	KUNIT_EXPECT_EQ(test, data_ptr[1], 2);
363

364
	KUNIT_EXPECT_FALSE(test, copy[1].is_inline);
365
	data_ptr = copy[1].pointer;
366
	KUNIT_EXPECT_EQ(test, data_ptr[0], 5);
367
	KUNIT_EXPECT_EQ(test, data_ptr[1], 6);
368

369
	property_entries_free(copy);
370
}
371

372
/* Verifies that single string array is stored inline when property is copied */
373
static void pe_test_move_inline_str(struct kunit *test)
374
{
375
	static char *str_array_small[] = { "a" };
376
	static char *str_array_big[] = { "b", "c", "d", "e" };
377
	static char *str_array_small_empty[] = { "" };
378
	static struct property_entry entries[] = {
379
		PROPERTY_ENTRY_STRING_ARRAY("small", str_array_small),
380
		PROPERTY_ENTRY_STRING_ARRAY("big", str_array_big),
381
		PROPERTY_ENTRY_STRING_ARRAY("small-empty", str_array_small_empty),
382
		{ }
383
	};
384

385
	struct property_entry *copy;
386
	const char * const *data_ptr;
387

388
	copy = property_entries_dup(entries);
389
	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, copy);
390

391
	KUNIT_EXPECT_TRUE(test, copy[0].is_inline);
392
	KUNIT_EXPECT_STREQ(test, copy[0].value.str[0], "a");
393

394
	KUNIT_EXPECT_FALSE(test, copy[1].is_inline);
395
	data_ptr = copy[1].pointer;
396
	KUNIT_EXPECT_STREQ(test, data_ptr[0], "b");
397
	KUNIT_EXPECT_STREQ(test, data_ptr[1], "c");
398

399
	KUNIT_EXPECT_TRUE(test, copy[2].is_inline);
400
	KUNIT_EXPECT_STREQ(test, copy[2].value.str[0], "");
401

402
	property_entries_free(copy);
403
}
404

405
/* Handling of reference properties */
406
static void pe_test_reference(struct kunit *test)
407
{
408
	static const struct software_node node1 = { .name = "1" };
409
	static const struct software_node node2 = { .name = "2" };
410
	static const struct software_node *group[] = { &node1, &node2, NULL };
411

412
	static const struct software_node_ref_args refs[] = {
413
		SOFTWARE_NODE_REFERENCE(&node1),
414
		SOFTWARE_NODE_REFERENCE(&node2, 3, 4),
415
	};
416

417
	const struct property_entry entries[] = {
418
		PROPERTY_ENTRY_REF("ref-1", &node1),
419
		PROPERTY_ENTRY_REF("ref-2", &node2, 1, 2),
420
		PROPERTY_ENTRY_REF_ARRAY("ref-3", refs),
421
		{ }
422
	};
423

424
	struct fwnode_handle *node;
425
	struct fwnode_reference_args ref;
426
	int error;
427

428
	error = software_node_register_node_group(group);
429
	KUNIT_ASSERT_EQ(test, error, 0);
430

431
	node = fwnode_create_software_node(entries, NULL);
432
	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, node);
433

434
	error = fwnode_property_get_reference_args(node, "ref-1", NULL,
435
						   0, 0, &ref);
436
	KUNIT_ASSERT_EQ(test, error, 0);
437
	KUNIT_EXPECT_PTR_EQ(test, to_software_node(ref.fwnode), &node1);
438
	KUNIT_EXPECT_EQ(test, ref.nargs, 0U);
439

440
	/* wrong index */
441
	error = fwnode_property_get_reference_args(node, "ref-1", NULL,
442
						   0, 1, &ref);
443
	KUNIT_EXPECT_NE(test, error, 0);
444

445
	error = fwnode_property_get_reference_args(node, "ref-2", NULL,
446
						   1, 0, &ref);
447
	KUNIT_ASSERT_EQ(test, error, 0);
448
	KUNIT_EXPECT_PTR_EQ(test, to_software_node(ref.fwnode), &node2);
449
	KUNIT_EXPECT_EQ(test, ref.nargs, 1U);
450
	KUNIT_EXPECT_EQ(test, ref.args[0], 1LLU);
451

452
	/* asking for more args, padded with zero data */
453
	error = fwnode_property_get_reference_args(node, "ref-2", NULL,
454
						   3, 0, &ref);
455
	KUNIT_ASSERT_EQ(test, error, 0);
456
	KUNIT_EXPECT_PTR_EQ(test, to_software_node(ref.fwnode), &node2);
457
	KUNIT_EXPECT_EQ(test, ref.nargs, 3U);
458
	KUNIT_EXPECT_EQ(test, ref.args[0], 1LLU);
459
	KUNIT_EXPECT_EQ(test, ref.args[1], 2LLU);
460
	KUNIT_EXPECT_EQ(test, ref.args[2], 0LLU);
461

462
	/* wrong index */
463
	error = fwnode_property_get_reference_args(node, "ref-2", NULL,
464
						   2, 1, &ref);
465
	KUNIT_EXPECT_NE(test, error, 0);
466

467
	/* array of references */
468
	error = fwnode_property_get_reference_args(node, "ref-3", NULL,
469
						   0, 0, &ref);
470
	KUNIT_ASSERT_EQ(test, error, 0);
471
	KUNIT_EXPECT_PTR_EQ(test, to_software_node(ref.fwnode), &node1);
472
	KUNIT_EXPECT_EQ(test, ref.nargs, 0U);
473

474
	/* second reference in the array */
475
	error = fwnode_property_get_reference_args(node, "ref-3", NULL,
476
						   2, 1, &ref);
477
	KUNIT_ASSERT_EQ(test, error, 0);
478
	KUNIT_EXPECT_PTR_EQ(test, to_software_node(ref.fwnode), &node2);
479
	KUNIT_EXPECT_EQ(test, ref.nargs, 2U);
480
	KUNIT_EXPECT_EQ(test, ref.args[0], 3LLU);
481
	KUNIT_EXPECT_EQ(test, ref.args[1], 4LLU);
482

483
	/* wrong index */
484
	error = fwnode_property_get_reference_args(node, "ref-1", NULL,
485
						   0, 2, &ref);
486
	KUNIT_EXPECT_NE(test, error, 0);
487

488
	fwnode_remove_software_node(node);
489
	software_node_unregister_node_group(group);
490
}
491

492
static struct kunit_case property_entry_test_cases[] = {
493
	KUNIT_CASE(pe_test_uints),
494
	KUNIT_CASE(pe_test_uint_arrays),
495
	KUNIT_CASE(pe_test_strings),
496
	KUNIT_CASE(pe_test_bool),
497
	KUNIT_CASE(pe_test_move_inline_u8),
498
	KUNIT_CASE(pe_test_move_inline_str),
499
	KUNIT_CASE(pe_test_reference),
500
	{ }
501
};
502

503
static struct kunit_suite property_entry_test_suite = {
504
	.name = "property-entry",
505
	.test_cases = property_entry_test_cases,
506
};
507

508
kunit_test_suite(property_entry_test_suite);
509

510
MODULE_DESCRIPTION("Test module for the property entry API");
511
MODULE_AUTHOR("Dmitry Torokhov <[email protected]>");
512
MODULE_LICENSE("GPL");
513

514
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