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drm/tests: Add tests for the new Monochrome value of tv_mode

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Adds test for the cmdline parser, connector property, and
drm_analog_tv_mode to ensure the behaviour of the new value is
correct.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240620110947.3615207-1-dave.stevenson@raspberrypi.com
This commit is contained in:
Dave Stevenson
2024-06-20 12:09:47 +01:00
committed by Maxime Ripard
parent 0c94f58cef
commit e315384899
3 changed files with 43 additions and 0 deletions
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31
drivers/gpu/drm/tests/drm_modes_test.c
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@@ -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),