diff mbox series

[v2,6/7] drm/tests: hdmi: Add limited range tests for YUV420 mode

Message ID 20250311-hdmi-conn-yuv-v2-6-fbdb94f02562@collabora.com (mailing list archive)
State New
Headers show
Series drm/connector: hdmi: Allow using the YUV420 output format | expand

Commit Message

Cristian Ciocaltea March 11, 2025, 10:57 a.m. UTC 
Provide tests to verify that drm_atomic_helper_connector_hdmi_check()
helper behaviour when using YUV420 output format is to always set the
limited RGB quantization range to 'limited', no matter what the value of
Broadcast RGB property is.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
---
 drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c |  89 +++++++++++++++-
 drivers/gpu/drm/tests/drm_kunit_edid.h             | 112 +++++++++++++++++++++
 2 files changed, 196 insertions(+), 5 deletions(-)

Comments

Maxime Ripard March 11, 2025, 4:17 p.m. UTC | #1 
On Tue, Mar 11, 2025 at 12:57:38PM +0200, Cristian Ciocaltea wrote:
> Provide tests to verify that drm_atomic_helper_connector_hdmi_check()
> helper behaviour when using YUV420 output format is to always set the
> limited RGB quantization range to 'limited', no matter what the value of
> Broadcast RGB property is.
> 
> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
> ---
>  drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c |  89 +++++++++++++++-
>  drivers/gpu/drm/tests/drm_kunit_edid.h             | 112 +++++++++++++++++++++
>  2 files changed, 196 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
> index a3f7f3ce31c73335c2c2643bdc5395b6ceb6f071..1df12c0b7768e4f85f4c943840d9b4dcb6e079e0 100644
> --- a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
> +++ b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
> @@ -227,6 +227,8 @@ connector_hdmi_init_funcs_set_edid(struct kunit *test,
>  	enc->possible_crtcs = drm_crtc_mask(priv->crtc);
>  
>  	conn = &priv->connector;
> +	conn->ycbcr_420_allowed = !!(formats & BIT(HDMI_COLORSPACE_YUV420));
> +
>  	ret = drmm_connector_hdmi_init(drm, conn,
>  				       "Vendor", "Product",
>  				       &dummy_connector_funcs,
> @@ -751,6 +753,86 @@ static void drm_test_check_broadcast_rgb_limited_cea_mode_vic_1(struct kunit *te
>  	drm_modeset_acquire_fini(&ctx);
>  }
>  
> +/*
> + * Test that for an HDMI connector, with an HDMI monitor, we will
> + * get a limited RGB Quantization Range with a YUV420 mode, no
> + * matter what the value of the Broadcast RGB property is set to.
> + */
> +static void drm_test_check_broadcast_rgb_cea_mode_yuv420(struct kunit *test)
> +{
> +	struct drm_atomic_helper_connector_hdmi_priv *priv;
> +	enum drm_hdmi_broadcast_rgb broadcast_rgb;
> +	struct drm_modeset_acquire_ctx ctx;
> +	struct drm_connector_state *conn_state;
> +	struct drm_atomic_state *state;
> +	struct drm_display_mode *mode;
> +	struct drm_connector *conn;
> +	struct drm_device *drm;
> +	struct drm_crtc *crtc;
> +	int ret;
> +
> +	broadcast_rgb = *(enum drm_hdmi_broadcast_rgb *)test->param_value;
> +
> +	priv = drm_kunit_helper_connector_hdmi_init_set_edid(test,
> +				BIT(HDMI_COLORSPACE_RGB) |
> +				BIT(HDMI_COLORSPACE_YUV420),
> +				8,
> +				test_edid_hdmi_1080p_rgb_yuv_4k_yuv420_dc_max_200mhz);
> +	KUNIT_ASSERT_NOT_NULL(test, priv);
> +
> +	drm = &priv->drm;
> +	crtc = priv->crtc;
> +	conn = &priv->connector;
> +	KUNIT_ASSERT_TRUE(test, conn->display_info.is_hdmi);
> +
> +	mode = drm_kunit_display_mode_from_cea_vic(test, drm, 95);
> +	KUNIT_ASSERT_NOT_NULL(test, mode);
> +
> +	drm_modeset_acquire_init(&ctx, 0);
> +
> +	ret = light_up_connector(test, drm, crtc, conn, mode, &ctx);
> +	KUNIT_ASSERT_EQ(test, ret, 0);
> +
> +	state = drm_kunit_helper_atomic_state_alloc(test, drm, &ctx);
> +	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
> +
> +	conn_state = drm_atomic_get_connector_state(state, conn);
> +	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, conn_state);
> +
> +	conn_state->hdmi.broadcast_rgb = broadcast_rgb;
> +
> +	ret = drm_atomic_check_only(state);
> +	KUNIT_ASSERT_EQ(test, ret, 0);
> +
> +	conn_state = drm_atomic_get_connector_state(state, conn);
> +	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, conn_state);
> +
> +	KUNIT_ASSERT_EQ(test, conn_state->hdmi.broadcast_rgb, broadcast_rgb);
> +	KUNIT_ASSERT_EQ(test, conn_state->hdmi.output_format, HDMI_COLORSPACE_YUV420);
> +
> +	KUNIT_EXPECT_TRUE(test, conn_state->hdmi.is_limited_range);
> +
> +	drm_modeset_drop_locks(&ctx);
> +	drm_modeset_acquire_fini(&ctx);
> +}
> +
> +static const enum drm_hdmi_broadcast_rgb check_broadcast_rgb_cea_mode_yuv420_tests[] = {
> +	DRM_HDMI_BROADCAST_RGB_AUTO,
> +	DRM_HDMI_BROADCAST_RGB_FULL,
> +	DRM_HDMI_BROADCAST_RGB_LIMITED,
> +};
> +
> +static void
> +check_broadcast_rgb_cea_mode_yuv420_desc(const enum drm_hdmi_broadcast_rgb *broadcast_rgb,
> +					 char *desc)
> +{
> +	sprintf(desc, "%s", drm_hdmi_connector_get_broadcast_rgb_name(*broadcast_rgb));
> +}
> +
> +KUNIT_ARRAY_PARAM(check_broadcast_rgb_cea_mode_yuv420,
> +		  check_broadcast_rgb_cea_mode_yuv420_tests,
> +		  check_broadcast_rgb_cea_mode_yuv420_desc);
> +

We need more tests than that to test the various combinations, whether
the fallback to YUV420 should work or not depending on the EDID, the
driver capabilities, YUV420-only vs YUV420-also, etc.

Maxime
Cristian Ciocaltea March 11, 2025, 10:54 p.m. UTC | #2 
On 3/11/25 6:17 PM, Maxime Ripard wrote:
> On Tue, Mar 11, 2025 at 12:57:38PM +0200, Cristian Ciocaltea wrote:
>> Provide tests to verify that drm_atomic_helper_connector_hdmi_check()
>> helper behaviour when using YUV420 output format is to always set the
>> limited RGB quantization range to 'limited', no matter what the value of
>> Broadcast RGB property is.

[...]

> We need more tests than that to test the various combinations, whether
> the fallback to YUV420 should work or not depending on the EDID, the
> driver capabilities, YUV420-only vs YUV420-also, etc.

Some fallback tests were provided in the next patch, including checks like:

  KUNIT_ASSERT_TRUE(test, drm_mode_is_420_only(info, yuv420_only_mode));
  KUNIT_ASSERT_TRUE(test, drm_mode_is_420_also(info, preferred));

I'll try to further extend the test coverage.

Regards,
Cristian
diff mbox series

Patch

diff --git a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
index a3f7f3ce31c73335c2c2643bdc5395b6ceb6f071..1df12c0b7768e4f85f4c943840d9b4dcb6e079e0 100644
--- a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
+++ b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
@@ -227,6 +227,8 @@  connector_hdmi_init_funcs_set_edid(struct kunit *test,
 	enc->possible_crtcs = drm_crtc_mask(priv->crtc);
 
 	conn = &priv->connector;
+	conn->ycbcr_420_allowed = !!(formats & BIT(HDMI_COLORSPACE_YUV420));
+
 	ret = drmm_connector_hdmi_init(drm, conn,
 				       "Vendor", "Product",
 				       &dummy_connector_funcs,
@@ -751,6 +753,86 @@  static void drm_test_check_broadcast_rgb_limited_cea_mode_vic_1(struct kunit *te
 	drm_modeset_acquire_fini(&ctx);
 }
 
+/*
+ * Test that for an HDMI connector, with an HDMI monitor, we will
+ * get a limited RGB Quantization Range with a YUV420 mode, no
+ * matter what the value of the Broadcast RGB property is set to.
+ */
+static void drm_test_check_broadcast_rgb_cea_mode_yuv420(struct kunit *test)
+{
+	struct drm_atomic_helper_connector_hdmi_priv *priv;
+	enum drm_hdmi_broadcast_rgb broadcast_rgb;
+	struct drm_modeset_acquire_ctx ctx;
+	struct drm_connector_state *conn_state;
+	struct drm_atomic_state *state;
+	struct drm_display_mode *mode;
+	struct drm_connector *conn;
+	struct drm_device *drm;
+	struct drm_crtc *crtc;
+	int ret;
+
+	broadcast_rgb = *(enum drm_hdmi_broadcast_rgb *)test->param_value;
+
+	priv = drm_kunit_helper_connector_hdmi_init_set_edid(test,
+				BIT(HDMI_COLORSPACE_RGB) |
+				BIT(HDMI_COLORSPACE_YUV420),
+				8,
+				test_edid_hdmi_1080p_rgb_yuv_4k_yuv420_dc_max_200mhz);
+	KUNIT_ASSERT_NOT_NULL(test, priv);
+
+	drm = &priv->drm;
+	crtc = priv->crtc;
+	conn = &priv->connector;
+	KUNIT_ASSERT_TRUE(test, conn->display_info.is_hdmi);
+
+	mode = drm_kunit_display_mode_from_cea_vic(test, drm, 95);
+	KUNIT_ASSERT_NOT_NULL(test, mode);
+
+	drm_modeset_acquire_init(&ctx, 0);
+
+	ret = light_up_connector(test, drm, crtc, conn, mode, &ctx);
+	KUNIT_ASSERT_EQ(test, ret, 0);
+
+	state = drm_kunit_helper_atomic_state_alloc(test, drm, &ctx);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
+
+	conn_state = drm_atomic_get_connector_state(state, conn);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, conn_state);
+
+	conn_state->hdmi.broadcast_rgb = broadcast_rgb;
+
+	ret = drm_atomic_check_only(state);
+	KUNIT_ASSERT_EQ(test, ret, 0);
+
+	conn_state = drm_atomic_get_connector_state(state, conn);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, conn_state);
+
+	KUNIT_ASSERT_EQ(test, conn_state->hdmi.broadcast_rgb, broadcast_rgb);
+	KUNIT_ASSERT_EQ(test, conn_state->hdmi.output_format, HDMI_COLORSPACE_YUV420);
+
+	KUNIT_EXPECT_TRUE(test, conn_state->hdmi.is_limited_range);
+
+	drm_modeset_drop_locks(&ctx);
+	drm_modeset_acquire_fini(&ctx);
+}
+
+static const enum drm_hdmi_broadcast_rgb check_broadcast_rgb_cea_mode_yuv420_tests[] = {
+	DRM_HDMI_BROADCAST_RGB_AUTO,
+	DRM_HDMI_BROADCAST_RGB_FULL,
+	DRM_HDMI_BROADCAST_RGB_LIMITED,
+};
+
+static void
+check_broadcast_rgb_cea_mode_yuv420_desc(const enum drm_hdmi_broadcast_rgb *broadcast_rgb,
+					 char *desc)
+{
+	sprintf(desc, "%s", drm_hdmi_connector_get_broadcast_rgb_name(*broadcast_rgb));
+}
+
+KUNIT_ARRAY_PARAM(check_broadcast_rgb_cea_mode_yuv420,
+		  check_broadcast_rgb_cea_mode_yuv420_tests,
+		  check_broadcast_rgb_cea_mode_yuv420_desc);
+
 /*
  * Test that if we change the maximum bpc property to a different value,
  * we trigger a mode change on the connector's CRTC, which will in turn
@@ -1625,11 +1707,8 @@  static struct kunit_case drm_atomic_helper_connector_hdmi_check_tests[] = {
 	KUNIT_CASE(drm_test_check_broadcast_rgb_full_cea_mode_vic_1),
 	KUNIT_CASE(drm_test_check_broadcast_rgb_limited_cea_mode),
 	KUNIT_CASE(drm_test_check_broadcast_rgb_limited_cea_mode_vic_1),
-	/*
-	 * TODO: When we'll have YUV output support, we need to check
-	 * that the limited range is always set to limited no matter
-	 * what the value of Broadcast RGB is.
-	 */
+	KUNIT_CASE_PARAM(drm_test_check_broadcast_rgb_cea_mode_yuv420,
+			 check_broadcast_rgb_cea_mode_yuv420_gen_params),
 	KUNIT_CASE(drm_test_check_broadcast_rgb_crtc_mode_changed),
 	KUNIT_CASE(drm_test_check_broadcast_rgb_crtc_mode_not_changed),
 	KUNIT_CASE(drm_test_check_disable_connector),
diff --git a/drivers/gpu/drm/tests/drm_kunit_edid.h b/drivers/gpu/drm/tests/drm_kunit_edid.h
index 6358397a5d7ab0bcdea1c824fc9fd382560f4b0e..ff316e6114d65c96b1338cd83bc0d8d9e6e143e9 100644
--- a/drivers/gpu/drm/tests/drm_kunit_edid.h
+++ b/drivers/gpu/drm/tests/drm_kunit_edid.h
@@ -583,4 +583,116 @@  static const unsigned char test_edid_hdmi_1080p_rgb_yuv_dc_max_340mhz[] = {
 	0x00, 0x00, 0x00, 0x8c
 };
 
+/*
+ * edid-decode (hex):
+ *
+ * 00 ff ff ff ff ff ff 00 31 d8 34 00 00 00 00 00
+ * ff 23 01 03 80 60 36 78 0f ee 91 a3 54 4c 99 26
+ * 0f 50 54 20 00 00 01 01 01 01 01 01 01 01 01 01
+ * 01 01 01 01 01 01 02 3a 80 18 71 38 2d 40 58 2c
+ * 45 00 c0 1c 32 00 00 1e 00 00 00 fc 00 54 65 73
+ * 74 20 45 44 49 44 0a 20 20 20 00 00 00 fd 00 18
+ * 55 18 5e 11 00 0a 20 20 20 20 20 20 00 00 00 10
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 bb
+ *
+ * 02 03 29 31 42 90 5f 6c 03 0c 00 10 00 78 28 20
+ * 00 00 01 03 6d d8 5d c4 01 28 80 07 00 00 00 00
+ * 00 00 e3 0f 00 00 e2 0e 5f 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ca
+ *
+ * ----------------
+ *
+ * Block 0, Base EDID:
+ *   EDID Structure Version & Revision: 1.3
+ *   Vendor & Product Identification:
+ *     Manufacturer: LNX
+ *     Model: 52
+ *     Model year: 2025
+ *   Basic Display Parameters & Features:
+ *     Digital display
+ *     Maximum image size: 96 cm x 54 cm
+ *     Gamma: 2.20
+ *     RGB color display
+ *     Default (sRGB) color space is primary color space
+ *     First detailed timing is the preferred timing
+ *     Supports GTF timings within operating range
+ *   Color Characteristics:
+ *     Red  : 0.6396, 0.3300
+ *     Green: 0.2998, 0.5996
+ *     Blue : 0.1503, 0.0595
+ *     White: 0.3125, 0.3291
+ *   Established Timings I & II:
+ *     DMT 0x04:   640x480    59.940476 Hz   4:3     31.469 kHz     25.175000 MHz
+ *   Standard Timings: none
+ *   Detailed Timing Descriptors:
+ *     DTD 1:  1920x1080   60.000000 Hz  16:9     67.500 kHz    148.500000 MHz (960 mm x 540 mm)
+ *                  Hfront   88 Hsync  44 Hback  148 Hpol P
+ *                  Vfront    4 Vsync   5 Vback   36 Vpol P
+ *     Display Product Name: 'Test EDID'
+ *     Display Range Limits:
+ *       Monitor ranges (GTF): 24-85 Hz V, 24-94 kHz H, max dotclock 170 MHz
+ *     Dummy Descriptor:
+ *   Extension blocks: 1
+ * Checksum: 0xbb
+ *
+ * ----------------
+ *
+ * Block 1, CTA-861 Extension Block:
+ *   Revision: 3
+ *   Supports YCbCr 4:4:4
+ *   Supports YCbCr 4:2:2
+ *   Native detailed modes: 1
+ *   Video Data Block:
+ *     VIC  16:  1920x1080   60.000000 Hz  16:9     67.500 kHz    148.500000 MHz (native)
+ *     VIC  95:  3840x2160   30.000000 Hz  16:9     67.500 kHz    297.000000 MHz
+ *   Vendor-Specific Data Block (HDMI), OUI 00-0C-03:
+ *     Source physical address: 1.0.0.0
+ *     DC_48bit
+ *     DC_36bit
+ *     DC_30bit
+ *     DC_Y444
+ *     Maximum TMDS clock: 200 MHz
+ *     Extended HDMI video details:
+ *   Vendor-Specific Data Block (HDMI Forum), OUI C4-5D-D8:
+ *     Version: 1
+ *     Maximum TMDS Character Rate: 200 MHz
+ *     SCDC Present
+ *     Supports 16-bits/component Deep Color 4:2:0 Pixel Encoding
+ *     Supports 12-bits/component Deep Color 4:2:0 Pixel Encoding
+ *     Supports 10-bits/component Deep Color 4:2:0 Pixel Encoding
+ *   YCbCr 4:2:0 Capability Map Data Block:
+ *     Empty Capability Map
+ *   YCbCr 4:2:0 Video Data Block:
+ *     VIC  95:  3840x2160   30.000000 Hz  16:9     67.500 kHz    297.000000 MHz
+ * Checksum: 0xca
+ */
+static const unsigned char test_edid_hdmi_1080p_rgb_yuv_4k_yuv420_dc_max_200mhz[] = {
+	0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x31, 0xd8, 0x34, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0xff, 0x23, 0x01, 0x03, 0x80, 0x60, 0x36, 0x78,
+	0x0f, 0xee, 0x91, 0xa3, 0x54, 0x4c, 0x99, 0x26, 0x0f, 0x50, 0x54, 0x20,
+	0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x3a, 0x80, 0x18, 0x71, 0x38,
+	0x2d, 0x40, 0x58, 0x2c, 0x45, 0x00, 0xc0, 0x1c, 0x32, 0x00, 0x00, 0x1e,
+	0x00, 0x00, 0x00, 0xfc, 0x00, 0x54, 0x65, 0x73, 0x74, 0x20, 0x45, 0x44,
+	0x49, 0x44, 0x0a, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x18,
+	0x55, 0x18, 0x5e, 0x11, 0x00, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+	0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xbb, 0x02, 0x03, 0x29, 0x31,
+	0x42, 0x90, 0x5f, 0x6c, 0x03, 0x0c, 0x00, 0x10, 0x00, 0x78, 0x28, 0x20,
+	0x00, 0x00, 0x01, 0x03, 0x6d, 0xd8, 0x5d, 0xc4, 0x01, 0x28, 0x80, 0x07,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe3, 0x0f, 0x00, 0x00, 0xe2, 0x0e,
+	0x5f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0xca
+};
+
 #endif // DRM_KUNIT_EDID_H_