diff options
Diffstat (limited to 'drivers/gpu/drm/tests/drm_modes_test.c')
| -rw-r--r-- | drivers/gpu/drm/tests/drm_modes_test.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tests/drm_modes_test.c b/drivers/gpu/drm/tests/drm_modes_test.c index 1e9f63fbfead..6ed51f99e133 100644 --- a/drivers/gpu/drm/tests/drm_modes_test.c +++ b/drivers/gpu/drm/tests/drm_modes_test.c @@ -130,7 +130,38 @@ static void drm_test_modes_analog_tv_pal_576i_inlined(struct kunit *test) KUNIT_EXPECT_TRUE(test, drm_mode_equal(expected, mode)); } +static void drm_test_modes_analog_tv_mono_576i(struct kunit *test) +{ + struct drm_test_modes_priv *priv = test->priv; + struct drm_display_mode *mode; + + mode = drm_analog_tv_mode(priv->drm, + DRM_MODE_TV_MODE_MONOCHROME, + 13500 * HZ_PER_KHZ, 720, 576, + true); + KUNIT_ASSERT_NOT_NULL(test, mode); + + KUNIT_EXPECT_EQ(test, drm_mode_vrefresh(mode), 50); + KUNIT_EXPECT_EQ(test, mode->hdisplay, 720); + + /* BT.601 defines hsync_start at 732 for 576i */ + KUNIT_EXPECT_EQ(test, mode->hsync_start, 732); + + /* + * The PAL standard expects a line to take 64us. With a pixel + * clock of 13.5 MHz, a pixel takes around 74ns, so we need to + * have 64000ns / 74ns = 864. + * + * This is also mandated by BT.601. + */ + KUNIT_EXPECT_EQ(test, mode->htotal, 864); + + KUNIT_EXPECT_EQ(test, mode->vdisplay, 576); + KUNIT_EXPECT_EQ(test, mode->vtotal, 625); +} + static struct kunit_case drm_modes_analog_tv_tests[] = { + KUNIT_CASE(drm_test_modes_analog_tv_mono_576i), KUNIT_CASE(drm_test_modes_analog_tv_ntsc_480i), KUNIT_CASE(drm_test_modes_analog_tv_ntsc_480i_inlined), KUNIT_CASE(drm_test_modes_analog_tv_pal_576i), @@ -147,4 +178,5 @@ static struct kunit_suite drm_modes_analog_tv_test_suite = { kunit_test_suite(drm_modes_analog_tv_test_suite); MODULE_AUTHOR("Maxime Ripard <maxime@cerno.tech>"); +MODULE_DESCRIPTION("Kunit test for drm_modes functions"); MODULE_LICENSE("GPL"); |