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// SPDX-License-Identifier: GPL-2.0
/*
* Kunit test for drm_modes functions
*/
#include <linux/i2c.h>
#include <drm/drm_atomic_state_helper.h>
#include <drm/drm_connector.h>
#include <drm/drm_drv.h>
#include <drm/drm_kunit_helpers.h>
#include <kunit/test.h>
struct drm_connector_init_priv {
struct drm_device drm;
struct drm_connector connector;
struct i2c_adapter ddc;
};
static const struct drm_connector_funcs dummy_funcs = {
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.reset = drm_atomic_helper_connector_reset,
};
static int dummy_ddc_xfer(struct i2c_adapter *adapter,
struct i2c_msg *msgs, int num)
{
return num;
}
static u32 dummy_ddc_func(struct i2c_adapter *adapter)
{
return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
}
static const struct i2c_algorithm dummy_ddc_algorithm = {
.master_xfer = dummy_ddc_xfer,
.functionality = dummy_ddc_func,
};
static void i2c_del_adapter_wrapper(void *ptr)
{
struct i2c_adapter *adap = ptr;
i2c_del_adapter(adap);
}
static int drm_test_connector_init(struct kunit *test)
{
struct drm_connector_init_priv *priv;
struct device *dev;
int ret;
dev = drm_kunit_helper_alloc_device(test);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dev);
priv = drm_kunit_helper_alloc_drm_device(test, dev,
struct drm_connector_init_priv, drm,
DRIVER_MODESET | DRIVER_ATOMIC);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv);
strscpy(priv->ddc.name, "dummy-connector-ddc", sizeof(priv->ddc.name));
priv->ddc.owner = THIS_MODULE;
priv->ddc.algo = &dummy_ddc_algorithm;
priv->ddc.dev.parent = dev;
ret = i2c_add_adapter(&priv->ddc);
KUNIT_ASSERT_EQ(test, ret, 0);
ret = kunit_add_action_or_reset(test, i2c_del_adapter_wrapper, &priv->ddc);
KUNIT_ASSERT_EQ(test, ret, 0);
test->priv = priv;
return 0;
}
/*
* Test that the registration of a bog standard connector works as
* expected and doesn't report any error.
*/
static void drm_test_drmm_connector_init(struct kunit *test)
{
struct drm_connector_init_priv *priv = test->priv;
int ret;
ret = drmm_connector_init(&priv->drm, &priv->connector,
&dummy_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc);
KUNIT_EXPECT_EQ(test, ret, 0);
}
/*
* Test that the registration of a connector without a DDC adapter
* doesn't report any error.
*/
static void drm_test_drmm_connector_init_null_ddc(struct kunit *test)
{
struct drm_connector_init_priv *priv = test->priv;
int ret;
ret = drmm_connector_init(&priv->drm, &priv->connector,
&dummy_funcs,
DRM_MODE_CONNECTOR_HDMIA,
NULL);
KUNIT_EXPECT_EQ(test, ret, 0);
}
/*
* Test that the registration of a connector succeeds for all possible
* connector types.
*/
static void drm_test_drmm_connector_init_type_valid(struct kunit *test)
{
struct drm_connector_init_priv *priv = test->priv;
unsigned int connector_type = *(unsigned int *)test->param_value;
int ret;
ret = drmm_connector_init(&priv->drm, &priv->connector,
&dummy_funcs,
connector_type,
&priv->ddc);
KUNIT_EXPECT_EQ(test, ret, 0);
}
static const unsigned int drm_connector_init_type_valid_tests[] = {
DRM_MODE_CONNECTOR_Unknown,
DRM_MODE_CONNECTOR_VGA,
DRM_MODE_CONNECTOR_DVII,
DRM_MODE_CONNECTOR_DVID,
DRM_MODE_CONNECTOR_DVIA,
DRM_MODE_CONNECTOR_Composite,
DRM_MODE_CONNECTOR_SVIDEO,
DRM_MODE_CONNECTOR_LVDS,
DRM_MODE_CONNECTOR_Component,
DRM_MODE_CONNECTOR_9PinDIN,
DRM_MODE_CONNECTOR_DisplayPort,
DRM_MODE_CONNECTOR_HDMIA,
DRM_MODE_CONNECTOR_HDMIB,
DRM_MODE_CONNECTOR_TV,
DRM_MODE_CONNECTOR_eDP,
DRM_MODE_CONNECTOR_VIRTUAL,
DRM_MODE_CONNECTOR_DSI,
DRM_MODE_CONNECTOR_DPI,
DRM_MODE_CONNECTOR_WRITEBACK,
DRM_MODE_CONNECTOR_SPI,
DRM_MODE_CONNECTOR_USB,
};
static void drm_connector_init_type_desc(const unsigned int *type, char *desc)
{
sprintf(desc, "%s", drm_get_connector_type_name(*type));
}
KUNIT_ARRAY_PARAM(drm_connector_init_type_valid,
drm_connector_init_type_valid_tests,
drm_connector_init_type_desc);
static struct kunit_case drmm_connector_init_tests[] = {
KUNIT_CASE(drm_test_drmm_connector_init),
KUNIT_CASE(drm_test_drmm_connector_init_null_ddc),
KUNIT_CASE_PARAM(drm_test_drmm_connector_init_type_valid,
drm_connector_init_type_valid_gen_params),
{ }
};
static struct kunit_suite drmm_connector_init_test_suite = {
.name = "drmm_connector_init",
.init = drm_test_connector_init,
.test_cases = drmm_connector_init_tests,
};
struct drm_get_tv_mode_from_name_test {
const char *name;
enum drm_connector_tv_mode expected_mode;
};
#define TV_MODE_NAME(_name, _mode) \
{ \
.name = _name, \
.expected_mode = _mode, \
}
static void drm_test_get_tv_mode_from_name_valid(struct kunit *test)
{
const struct drm_get_tv_mode_from_name_test *params = test->param_value;
KUNIT_EXPECT_EQ(test,
drm_get_tv_mode_from_name(params->name, strlen(params->name)),
params->expected_mode);
}
static const
struct drm_get_tv_mode_from_name_test drm_get_tv_mode_from_name_valid_tests[] = {
TV_MODE_NAME("NTSC", DRM_MODE_TV_MODE_NTSC),
TV_MODE_NAME("NTSC-443", DRM_MODE_TV_MODE_NTSC_443),
TV_MODE_NAME("NTSC-J", DRM_MODE_TV_MODE_NTSC_J),
TV_MODE_NAME("PAL", DRM_MODE_TV_MODE_PAL),
TV_MODE_NAME("PAL-M", DRM_MODE_TV_MODE_PAL_M),
TV_MODE_NAME("PAL-N", DRM_MODE_TV_MODE_PAL_N),
TV_MODE_NAME("SECAM", DRM_MODE_TV_MODE_SECAM),
};
static void
drm_get_tv_mode_from_name_valid_desc(const struct drm_get_tv_mode_from_name_test *t,
char *desc)
{
sprintf(desc, "%s", t->name);
}
KUNIT_ARRAY_PARAM(drm_get_tv_mode_from_name_valid,
drm_get_tv_mode_from_name_valid_tests,
drm_get_tv_mode_from_name_valid_desc);
static void drm_test_get_tv_mode_from_name_truncated(struct kunit *test)
{
const char *name = "NTS";
int ret;
ret = drm_get_tv_mode_from_name(name, strlen(name));
KUNIT_EXPECT_LT(test, ret, 0);
};
static struct kunit_case drm_get_tv_mode_from_name_tests[] = {
KUNIT_CASE_PARAM(drm_test_get_tv_mode_from_name_valid,
drm_get_tv_mode_from_name_valid_gen_params),
KUNIT_CASE(drm_test_get_tv_mode_from_name_truncated),
{ }
};
static struct kunit_suite drm_get_tv_mode_from_name_test_suite = {
.name = "drm_get_tv_mode_from_name",
.test_cases = drm_get_tv_mode_from_name_tests,
};
kunit_test_suites(
&drmm_connector_init_test_suite,
&drm_get_tv_mode_from_name_test_suite
);
MODULE_AUTHOR("Maxime Ripard <maxime@cerno.tech>");
MODULE_LICENSE("GPL");
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