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 <linux@roeck-us.net>
Link: https://patch.msgid.link/20240711055352.3411807-1-linux@roeck-us.net
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/base/regmap/regmap-kunit.c b/drivers/base/regmap/regmap-kunit.c
index 9ec91b0de4a669ccbb765dad2df16ff0b609ace2..d790c7df5cac0eee382704dfeb6e50e7ab01d0ea 100644 (file)
--- a/drivers/base/regmap/regmap-kunit.c
+++ b/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),