regmap: kunit: Add test cases for regmap_multi_reg_(read,write}()

Add test cases for regmap_multi_reg_read() and regmap_multi_reg_write().

Signed-off-by: Guenter Roeck <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>

drivers/base/regmap/regmap-kunit.c

@@ -304,6 +304,77 @@ static void bulk_read(struct kunit *test)
  KUNIT_EXPECT_EQ(test, config.cache_type == REGCACHE_NONE, data->read[i]);
 }
 
+static void multi_write(struct kunit *test)
+{
+ struct regmap *map;
+ struct regmap_config config;
+ struct regmap_ram_data *data;
+ struct reg_sequence sequence[BLOCK_TEST_SIZE];
+ unsigned int val[BLOCK_TEST_SIZE], rval[BLOCK_TEST_SIZE];
+ int i;
+
+ config = test_regmap_config;
+
+ map = gen_regmap(test, &config, &data);
+ KUNIT_ASSERT_FALSE(test, IS_ERR(map));
+ if (IS_ERR(map))
+ return;
+
+ get_random_bytes(&val, sizeof(val));
+
+ /*
+ * Data written via the multi API can be read back with single
+ * reads.
+ */
+ for (i = 0; i < BLOCK_TEST_SIZE; i++) {
+ sequence[i].reg = i;
+ sequence[i].def = val[i];
+ sequence[i].delay_us = 0;
+ }
+ KUNIT_EXPECT_EQ(test, 0,
+ regmap_multi_reg_write(map, sequence, BLOCK_TEST_SIZE));
+ for (i = 0; i < BLOCK_TEST_SIZE; i++)
+ KUNIT_EXPECT_EQ(test, 0, regmap_read(map, i, &rval[i]));
+
+ KUNIT_EXPECT_MEMEQ(test, val, rval, sizeof(val));
+
+ /* If using a cache the cache satisfied the read */
+ for (i = 0; i < BLOCK_TEST_SIZE; i++)
+ KUNIT_EXPECT_EQ(test, config.cache_type == REGCACHE_NONE, data->read[i]);
+}
+
+static void multi_read(struct kunit *test)
+{
+ struct regmap *map;
+ struct regmap_config config;
+ struct regmap_ram_data *data;
+ unsigned int regs[BLOCK_TEST_SIZE];
+ unsigned int val[BLOCK_TEST_SIZE], rval[BLOCK_TEST_SIZE];
+ int i;
+
+ config = test_regmap_config;
+
+ map = gen_regmap(test, &config, &data);
+ KUNIT_ASSERT_FALSE(test, IS_ERR(map));
+ if (IS_ERR(map))
+ return;
+
+ get_random_bytes(&val, sizeof(val));
+
+ /* Data written as single writes can be read via the multi API */
+ for (i = 0; i < BLOCK_TEST_SIZE; i++) {
+ regs[i] = i;
+ KUNIT_EXPECT_EQ(test, 0, regmap_write(map, i, val[i]));
+ }
+ KUNIT_EXPECT_EQ(test, 0,
+ regmap_multi_reg_read(map, regs, rval, BLOCK_TEST_SIZE));
+ KUNIT_EXPECT_MEMEQ(test, val, rval, sizeof(val));
+
+ /* If using a cache the cache satisfied the read */
+ for (i = 0; i < BLOCK_TEST_SIZE; i++)
+ KUNIT_EXPECT_EQ(test, config.cache_type == REGCACHE_NONE, data->read[i]);
+}
+
 static void read_bypassed(struct kunit *test)
 {
  const struct regmap_test_param *param = test->param_value;
@@ -1905,6 +1976,8 @@ static struct kunit_case regmap_test_cases[] = {
  KUNIT_CASE_PARAM(read_bypassed_volatile, real_cache_types_gen_params),
  KUNIT_CASE_PARAM(bulk_write, regcache_types_gen_params),
  KUNIT_CASE_PARAM(bulk_read, regcache_types_gen_params),
+ KUNIT_CASE_PARAM(multi_write, regcache_types_gen_params),
+ KUNIT_CASE_PARAM(multi_read, regcache_types_gen_params),
  KUNIT_CASE_PARAM(write_readonly, regcache_types_gen_params),
  KUNIT_CASE_PARAM(read_writeonly, regcache_types_gen_params),
  KUNIT_CASE_PARAM(reg_defaults, regcache_types_gen_params),