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drm/tests: helpers: Create the device in another function

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We'll need in some tests to control when the device needs to be added
and removed, so let's split the device creation from the DRM device
creation function.

Reviewed-by: Maíra Canal <mcanal@igalia.com>
Link: https://lore.kernel.org/r/20221123-rpi-kunit-tests-v3-7-4615a663a84a@cerno.tech
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
This commit is contained in:
Maxime Ripard 2022-12-01 16:11:38 +01:00
parent 1d041a469e
commit 9ecd8045bf
No known key found for this signature in database
GPG Key ID: E3EF0D6F671851C5
5 changed files with 77 additions and 27 deletions
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14
drivers/gpu/drm/tests/drm_client_modeset_test.c
View File

@ -15,6 +15,7 @@
struct drm_client_modeset_test_priv {
struct drm_device *drm;
struct device *dev;
struct drm_connector connector;
};
@ -59,7 +60,10 @@ static int drm_client_modeset_test_init(struct kunit *test)
test->priv = priv;
priv->drm = drm_kunit_helper_alloc_drm_device(test, DRIVER_MODESET);
priv->dev = drm_kunit_helper_alloc_device(test);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->dev);
priv->drm = drm_kunit_helper_alloc_drm_device(test, priv->dev, DRIVER_MODESET);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->drm);
ret = drmm_connector_init(priv->drm, &priv->connector,
@ -76,6 +80,13 @@ static int drm_client_modeset_test_init(struct kunit *test)
return 0;
}
static void drm_client_modeset_test_exit(struct kunit *test)
{
struct drm_client_modeset_test_priv *priv = test->priv;
drm_kunit_helper_free_device(test, priv->dev);
}
static void drm_test_pick_cmdline_res_1920_1080_60(struct kunit *test)
{
struct drm_client_modeset_test_priv *priv = test->priv;
@ -175,6 +186,7 @@ static struct kunit_case drm_test_pick_cmdline_tests[] = {
static struct kunit_suite drm_test_pick_cmdline_test_suite = {
.name = "drm_test_pick_cmdline",
.init = drm_client_modeset_test_init,
.exit = drm_client_modeset_test_exit,
.test_cases = drm_test_pick_cmdline_tests
};

56
drivers/gpu/drm/tests/drm_kunit_helpers.c
View File

@ -17,36 +17,51 @@ struct kunit_dev {
static const struct drm_mode_config_funcs drm_mode_config_funcs = {
};
static int dev_init(struct kunit_resource *res, void *ptr)
/**
* drm_kunit_helper_alloc_device - Allocate a mock device for a KUnit test
* @test: The test context object
*
* This allocates a fake struct &device to create a mock for a KUnit
* test.
*
* Callers need to make sure drm_kunit_helper_free_device() on the
* device when done.
*
* Returns:
* A pointer to the new device, or an ERR_PTR() otherwise.
*/
struct device *drm_kunit_helper_alloc_device(struct kunit *test)
{
char *name = ptr;
struct device *dev;
dev = root_device_register(name);
if (IS_ERR(dev))
return PTR_ERR(dev);
res->data = dev;
return 0;
return root_device_register(KUNIT_DEVICE_NAME);
}
EXPORT_SYMBOL_GPL(drm_kunit_helper_alloc_device);
static void dev_free(struct kunit_resource *res)
/**
* drm_kunit_helper_free_device - Frees a mock device
* @test: The test context object
* @dev: The device to free
*
* Frees a device allocated with drm_kunit_helper_alloc_device().
*/
void drm_kunit_helper_free_device(struct kunit *test, struct device *dev)
{
struct device *dev = res->data;
root_device_unregister(dev);
}
EXPORT_SYMBOL_GPL(drm_kunit_helper_free_device);
/**
* drm_kunit_helper_alloc_drm_device - Allocates a mock DRM device for KUnit tests
* @test: The test context object
* @dev: The parent device object
* @features: Mocked DRM device driver features
*
* This function allocates a new struct &device, creates a struct
* &drm_driver and will create a struct &drm_device using both.
* This function creates a struct &drm_driver and will create a struct
* &drm_device from @dev and that driver.
*
* The device and driver are tied to the @test context and will get
* cleaned at the end of the test. The drm_device is allocated through
* @dev should be allocated using drm_kunit_helper_alloc_device().
*
* The driver is tied to the @test context and will get cleaned at the
* end of the test. The drm_device is allocated through
* devm_drm_dev_alloc() and will thus be freed through a device-managed
* resource.
*
@ -54,19 +69,14 @@ static void dev_free(struct kunit_resource *res)
* A pointer to the new drm_device, or an ERR_PTR() otherwise.
*/
struct drm_device *
drm_kunit_helper_alloc_drm_device(struct kunit *test,
drm_kunit_helper_alloc_drm_device(struct kunit *test, struct device *dev,
u32 features)
{
struct kunit_dev *kdev;
struct drm_device *drm;
struct drm_driver *driver;
struct device *dev;
int ret;
dev = kunit_alloc_resource(test, dev_init, dev_free, GFP_KERNEL, KUNIT_DEVICE_NAME);
if (!dev)
return ERR_PTR(-ENOMEM);
driver = kunit_kzalloc(test, sizeof(*driver), GFP_KERNEL);
if (!driver)
return ERR_PTR(-ENOMEM);

15
drivers/gpu/drm/tests/drm_modes_test.c
View File

@ -13,6 +13,7 @@
struct drm_test_modes_priv {
struct drm_device *drm;
struct device *dev;
};
static int drm_test_modes_init(struct kunit *test)
@ -22,7 +23,11 @@ static int drm_test_modes_init(struct kunit *test)
priv = kunit_kzalloc(test, sizeof(*priv), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, priv);
priv->drm = drm_kunit_helper_alloc_drm_device(test, DRIVER_MODESET);
priv->dev = drm_kunit_helper_alloc_device(test);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->dev);
priv->drm = drm_kunit_helper_alloc_drm_device(test, priv->dev,
DRIVER_MODESET);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->drm);
test->priv = priv;
@ -30,6 +35,13 @@ static int drm_test_modes_init(struct kunit *test)
return 0;
}
static void drm_test_modes_exit(struct kunit *test)
{
struct drm_test_modes_priv *priv = test->priv;
drm_kunit_helper_free_device(test, priv->dev);
}
static void drm_test_modes_analog_tv_ntsc_480i(struct kunit *test)
{
struct drm_test_modes_priv *priv = test->priv;
@ -135,6 +147,7 @@ static struct kunit_case drm_modes_analog_tv_tests[] = {
static struct kunit_suite drm_modes_analog_tv_test_suite = {
.name = "drm_modes_analog_tv",
.init = drm_test_modes_init,
.exit = drm_test_modes_exit,
.test_cases = drm_modes_analog_tv_tests,
};

14
drivers/gpu/drm/tests/drm_probe_helper_test.c
View File

@ -17,6 +17,7 @@
struct drm_probe_helper_test_priv {
struct drm_device *drm;
struct device *dev;
struct drm_connector connector;
};
@ -39,7 +40,10 @@ static int drm_probe_helper_test_init(struct kunit *test)
KUNIT_ASSERT_NOT_NULL(test, priv);
test->priv = priv;
priv->drm = drm_kunit_helper_alloc_drm_device(test,
priv->dev = drm_kunit_helper_alloc_device(test);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->dev);
priv->drm = drm_kunit_helper_alloc_drm_device(test, priv->dev,
DRIVER_MODESET | DRIVER_ATOMIC);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->drm);
@ -55,6 +59,13 @@ static int drm_probe_helper_test_init(struct kunit *test)
return 0;
}
static void drm_probe_helper_test_exit(struct kunit *test)
{
struct drm_probe_helper_test_priv *priv = test->priv;
drm_kunit_helper_free_device(test, priv->dev);
}
typedef struct drm_display_mode *(*expected_mode_func_t)(struct drm_device *);
struct drm_connector_helper_tv_get_modes_test {
@ -196,6 +207,7 @@ static struct kunit_case drm_test_connector_helper_tv_get_modes_tests[] = {
static struct kunit_suite drm_test_connector_helper_tv_get_modes_suite = {
.name = "drm_connector_helper_tv_get_modes",
.init = drm_probe_helper_test_init,
.exit = drm_probe_helper_test_exit,
.test_cases = drm_test_connector_helper_tv_get_modes_tests,
};

5
include/drm/drm_kunit_helpers.h
View File

@ -6,8 +6,11 @@
struct drm_device;
struct kunit;
struct device *drm_kunit_helper_alloc_device(struct kunit *test);
void drm_kunit_helper_free_device(struct kunit *test, struct device *dev);
struct drm_device *
drm_kunit_helper_alloc_drm_device(struct kunit *test,
drm_kunit_helper_alloc_drm_device(struct kunit *test, struct device *dev,
u32 features);
#endif // DRM_KUNIT_HELPERS_H_