diff options
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/regmap/regmap-kunit.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/drivers/base/regmap/regmap-kunit.c b/drivers/base/regmap/regmap-kunit.c index 4ec5cbfc0ca0..6f444ac0ec49 100644 --- a/drivers/base/regmap/regmap-kunit.c +++ b/drivers/base/regmap/regmap-kunit.c @@ -92,6 +92,11 @@ static struct regmap *gen_regmap(struct regmap_config *config, return ret; } +static bool reg_5_false(struct device *context, unsigned int reg) +{ + return reg != 5; +} + static void basic_read_write(struct kunit *test) { struct regcache_types *t = (struct regcache_types *)test->param_value; @@ -191,6 +196,72 @@ static void bulk_read(struct kunit *test) regmap_exit(map); } +static void write_readonly(struct kunit *test) +{ + struct regcache_types *t = (struct regcache_types *)test->param_value; + struct regmap *map; + struct regmap_config config; + struct regmap_ram_data *data; + unsigned int val; + int i; + + config = test_regmap_config; + config.cache_type = t->type; + config.num_reg_defaults = BLOCK_TEST_SIZE; + config.writeable_reg = reg_5_false; + + map = gen_regmap(&config, &data); + KUNIT_ASSERT_FALSE(test, IS_ERR(map)); + if (IS_ERR(map)) + return; + + get_random_bytes(&val, sizeof(val)); + + for (i = 0; i < BLOCK_TEST_SIZE; i++) + data->written[i] = false; + + /* Change the value of all registers, readonly should fail */ + for (i = 0; i < BLOCK_TEST_SIZE; i++) + KUNIT_EXPECT_EQ(test, i != 5, regmap_write(map, i, val) == 0); + + /* Did that match what we see on the device? */ + for (i = 0; i < BLOCK_TEST_SIZE; i++) + KUNIT_EXPECT_EQ(test, i != 5, data->written[i]); + + regmap_exit(map); +} + +static void read_writeonly(struct kunit *test) +{ + struct regcache_types *t = (struct regcache_types *)test->param_value; + struct regmap *map; + struct regmap_config config; + struct regmap_ram_data *data; + unsigned int val; + int i; + + config = test_regmap_config; + config.cache_type = t->type; + config.readable_reg = reg_5_false; + + map = gen_regmap(&config, &data); + KUNIT_ASSERT_FALSE(test, IS_ERR(map)); + if (IS_ERR(map)) + return; + + for (i = 0; i < BLOCK_TEST_SIZE; i++) + data->read[i] = false; + + /* Try to read all the registers, the writeonly one should fail */ + for (i = 0; i < BLOCK_TEST_SIZE; i++) + KUNIT_EXPECT_EQ(test, i != 5, regmap_read(map, i, &val) == 0); + + /* Did we trigger a hardware access? */ + KUNIT_EXPECT_FALSE(test, data->read[5]); + + regmap_exit(map); +} + static void reg_defaults(struct kunit *test) { struct regcache_types *t = (struct regcache_types *)test->param_value; @@ -609,6 +680,47 @@ static void cache_sync_defaults(struct kunit *test) regmap_exit(map); } +static void cache_sync_readonly(struct kunit *test) +{ + struct regcache_types *t = (struct regcache_types *)test->param_value; + struct regmap *map; + struct regmap_config config; + struct regmap_ram_data *data; + unsigned int val; + int i; + + config = test_regmap_config; + config.cache_type = t->type; + config.writeable_reg = reg_5_false; + + map = gen_regmap(&config, &data); + KUNIT_ASSERT_FALSE(test, IS_ERR(map)); + if (IS_ERR(map)) + return; + + /* Read all registers to fill the cache */ + for (i = 0; i < BLOCK_TEST_SIZE; i++) + KUNIT_EXPECT_EQ(test, 0, regmap_read(map, i, &val)); + + /* Change the value of all registers, readonly should fail */ + get_random_bytes(&val, sizeof(val)); + regcache_cache_only(map, true); + for (i = 0; i < BLOCK_TEST_SIZE; i++) + KUNIT_EXPECT_EQ(test, i != 5, regmap_write(map, i, val) == 0); + regcache_cache_only(map, false); + + /* Resync */ + for (i = 0; i < BLOCK_TEST_SIZE; i++) + data->written[i] = false; + KUNIT_EXPECT_EQ(test, 0, regcache_sync(map)); + + /* Did that match what we see on the device? */ + for (i = 0; i < BLOCK_TEST_SIZE; i++) + KUNIT_EXPECT_EQ(test, i != 5, data->written[i]); + + regmap_exit(map); +} + static void cache_sync_patch(struct kunit *test) { struct regcache_types *t = (struct regcache_types *)test->param_value; @@ -1037,6 +1149,8 @@ static struct kunit_case regmap_test_cases[] = { KUNIT_CASE_PARAM(basic_read_write, regcache_types_gen_params), KUNIT_CASE_PARAM(bulk_write, regcache_types_gen_params), KUNIT_CASE_PARAM(bulk_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), KUNIT_CASE_PARAM(reg_defaults_read_dev, regcache_types_gen_params), KUNIT_CASE_PARAM(register_patch, regcache_types_gen_params), @@ -1046,6 +1160,7 @@ static struct kunit_case regmap_test_cases[] = { KUNIT_CASE_PARAM(cache_bypass, real_cache_types_gen_params), KUNIT_CASE_PARAM(cache_sync, real_cache_types_gen_params), KUNIT_CASE_PARAM(cache_sync_defaults, real_cache_types_gen_params), + KUNIT_CASE_PARAM(cache_sync_readonly, real_cache_types_gen_params), KUNIT_CASE_PARAM(cache_sync_patch, real_cache_types_gen_params), KUNIT_CASE_PARAM(cache_drop, sparse_cache_types_gen_params), |