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From: Maxime Ripard <mripard@kernel.org>
Date: Mon, 12 Feb 2024 14:12:55 +0100
Subject: [PATCH v6 12/36] drm/tests: Add RGB Quantization tests
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Message-Id: <20240212-kms-hdmi-connector-state-v6-12-f4bcdc979e6f@kernel.org>
References: <20240212-kms-hdmi-connector-state-v6-0-f4bcdc979e6f@kernel.org>
In-Reply-To: <20240212-kms-hdmi-connector-state-v6-0-f4bcdc979e6f@kernel.org>
To: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>, 
 Thomas Zimmermann <tzimmermann@suse.de>, David Airlie <airlied@gmail.com>, 
 Daniel Vetter <daniel@ffwll.ch>, Emma Anholt <emma@anholt.net>, 
 Jonathan Corbet <corbet@lwn.net>, Sandy Huang <hjc@rock-chips.com>, 
 =?utf-8?q?Heiko_St=C3=BCbner?= <heiko@sntech.de>, 
 Chen-Yu Tsai <wens@csie.org>, Jernej Skrabec <jernej.skrabec@gmail.com>, 
 Samuel Holland <samuel@sholland.org>
Cc: Hans Verkuil <hverkuil@xs4all.nl>, dri-devel@lists.freedesktop.org, 
 linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, 
 linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, 
 linux-rockchip@lists.infradead.org, linux-sunxi@lists.linux.dev, 
 Maxime Ripard <mripard@kernel.org>, 
 Dave Stevenson <dave.stevenson@raspberrypi.com>

The previous commit added the infrastructure to the connector state to
track what RGB Quantization should be used in a given state for an HDMI
connector.

Let's add some kunit tests to make sure it works as expected.

Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
---
 .../gpu/drm/tests/drm_atomic_state_helper_test.c   | 335 +++++++++++++++++++++
 1 file changed, 335 insertions(+)

diff --git a/drivers/gpu/drm/tests/drm_atomic_state_helper_test.c b/drivers/gpu/drm/tests/drm_atomic_state_helper_test.c
index 21e6f796ee13..7750c3d214a4 100644
--- a/drivers/gpu/drm/tests/drm_atomic_state_helper_test.c
+++ b/drivers/gpu/drm/tests/drm_atomic_state_helper_test.c
@@ -328,7 +328,342 @@ static void drm_test_check_broadcast_rgb_crtc_mode_not_changed(struct kunit *tes
 	KUNIT_EXPECT_FALSE(test, crtc_state->mode_changed);
 }
 
+/*
+ * Test that for an HDMI connector, with an HDMI monitor, if the
+ * Broadcast RGB property is set to auto with a mode that isn't the
+ * VIC-1 mode, we will get a limited RGB Quantization Range.
+ */
+static void drm_test_check_broadcast_rgb_auto_cea_mode(struct kunit *test)
+{
+	struct drm_atomic_helper_connector_hdmi_priv *priv;
+	struct drm_modeset_acquire_ctx *ctx;
+	struct drm_connector_state *conn_state;
+	struct drm_atomic_state *state;
+	struct drm_display_mode *preferred;
+	struct drm_connector *conn;
+	struct drm_device *drm;
+	struct drm_crtc *crtc;
+	int ret;
+
+	priv = drm_atomic_helper_connector_hdmi_init(test);
+	KUNIT_ASSERT_NOT_NULL(test, priv);
+
+	conn = &priv->connector;
+	KUNIT_ASSERT_TRUE(test, conn->display_info.is_hdmi);
+
+	ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+	preferred = find_preferred_mode(conn);
+	KUNIT_ASSERT_NOT_NULL(test, preferred);
+	KUNIT_ASSERT_NE(test, drm_match_cea_mode(preferred), 1);
+
+	drm = &priv->drm;
+	crtc = priv->crtc;
+	ret = light_up_connector(test, drm, crtc, conn, preferred, 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);
+
+	KUNIT_ASSERT_EQ(test,
+			conn_state->hdmi.broadcast_rgb,
+			DRM_HDMI_BROADCAST_RGB_AUTO);
+
+	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_EXPECT_FALSE(test, conn_state->hdmi.is_full_range);
+}
+
+/*
+ * Test that for an HDMI connector, with an HDMI monitor, if the
+ * Broadcast RGB property is set to auto with a VIC-1 mode, we will get
+ * a full RGB Quantization Range.
+ */
+static void drm_test_check_broadcast_rgb_auto_cea_mode_vic_1(struct kunit *test)
+{
+	struct drm_atomic_helper_connector_hdmi_priv *priv;
+	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;
+
+	priv = drm_atomic_helper_connector_hdmi_init(test);
+	KUNIT_ASSERT_NOT_NULL(test, priv);
+
+	conn = &priv->connector;
+	KUNIT_ASSERT_TRUE(test, conn->display_info.is_hdmi);
+
+	ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+	mode = drm_display_mode_from_cea_vic(drm, 1);
+	KUNIT_ASSERT_NOT_NULL(test, mode);
+
+	drm = &priv->drm;
+	crtc = priv->crtc;
+	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);
+
+	KUNIT_ASSERT_EQ(test,
+			conn_state->hdmi.broadcast_rgb,
+			DRM_HDMI_BROADCAST_RGB_AUTO);
+
+	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_EXPECT_TRUE(test, conn_state->hdmi.is_full_range);
+}
+
+/*
+ * Test that for an HDMI connector, with an HDMI monitor, if the
+ * Broadcast RGB property is set to full with a mode that isn't the
+ * VIC-1 mode, we will get a full RGB Quantization Range.
+ */
+static void drm_test_check_broadcast_rgb_full_cea_mode(struct kunit *test)
+{
+	struct drm_atomic_helper_connector_hdmi_priv *priv;
+	struct drm_modeset_acquire_ctx *ctx;
+	struct drm_connector_state *conn_state;
+	struct drm_atomic_state *state;
+	struct drm_display_mode *preferred;
+	struct drm_connector *conn;
+	struct drm_device *drm;
+	struct drm_crtc *crtc;
+	int ret;
+
+	priv = drm_atomic_helper_connector_hdmi_init(test);
+	KUNIT_ASSERT_NOT_NULL(test, priv);
+
+	conn = &priv->connector;
+	KUNIT_ASSERT_TRUE(test, conn->display_info.is_hdmi);
+
+	ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+	preferred = find_preferred_mode(conn);
+	KUNIT_ASSERT_NOT_NULL(test, preferred);
+	KUNIT_ASSERT_NE(test, drm_match_cea_mode(preferred), 1);
+
+	drm = &priv->drm;
+	crtc = priv->crtc;
+	ret = light_up_connector(test, drm, crtc, conn, preferred, 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 = DRM_HDMI_BROADCAST_RGB_FULL;
+
+	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,
+			DRM_HDMI_BROADCAST_RGB_FULL);
+
+	KUNIT_EXPECT_TRUE(test, conn_state->hdmi.is_full_range);
+}
+
+/*
+ * Test that for an HDMI connector, with an HDMI monitor, if the
+ * Broadcast RGB property is set to full with a VIC-1 mode, we will get
+ * a full RGB Quantization Range.
+ */
+static void drm_test_check_broadcast_rgb_full_cea_mode_vic_1(struct kunit *test)
+{
+	struct drm_atomic_helper_connector_hdmi_priv *priv;
+	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;
+
+	priv = drm_atomic_helper_connector_hdmi_init(test);
+	KUNIT_ASSERT_NOT_NULL(test, priv);
+
+	conn = &priv->connector;
+	KUNIT_ASSERT_TRUE(test, conn->display_info.is_hdmi);
+
+	ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+	mode = drm_display_mode_from_cea_vic(drm, 1);
+	KUNIT_ASSERT_NOT_NULL(test, mode);
+
+	drm = &priv->drm;
+	crtc = priv->crtc;
+	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 = DRM_HDMI_BROADCAST_RGB_FULL;
+
+	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,
+			DRM_HDMI_BROADCAST_RGB_FULL);
+
+	KUNIT_EXPECT_TRUE(test, conn_state->hdmi.is_full_range);
+}
+
+/*
+ * Test that for an HDMI connector, with an HDMI monitor, if the
+ * Broadcast RGB property is set to limited with a mode that isn't the
+ * VIC-1 mode, we will get a limited RGB Quantization Range.
+ */
+static void drm_test_check_broadcast_rgb_limited_cea_mode(struct kunit *test)
+{
+	struct drm_atomic_helper_connector_hdmi_priv *priv;
+	struct drm_modeset_acquire_ctx *ctx;
+	struct drm_connector_state *conn_state;
+	struct drm_atomic_state *state;
+	struct drm_display_mode *preferred;
+	struct drm_connector *conn;
+	struct drm_device *drm;
+	struct drm_crtc *crtc;
+	int ret;
+
+	priv = drm_atomic_helper_connector_hdmi_init(test);
+	KUNIT_ASSERT_NOT_NULL(test, priv);
+
+	conn = &priv->connector;
+	KUNIT_ASSERT_TRUE(test, conn->display_info.is_hdmi);
+
+	ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+	preferred = find_preferred_mode(conn);
+	KUNIT_ASSERT_NOT_NULL(test, preferred);
+	KUNIT_ASSERT_NE(test, drm_match_cea_mode(preferred), 1);
+
+	drm = &priv->drm;
+	crtc = priv->crtc;
+	ret = light_up_connector(test, drm, crtc, conn, preferred, 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 = DRM_HDMI_BROADCAST_RGB_LIMITED;
+
+	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,
+			DRM_HDMI_BROADCAST_RGB_LIMITED);
+
+	KUNIT_EXPECT_FALSE(test, conn_state->hdmi.is_full_range);
+}
+
+/*
+ * Test that for an HDMI connector, with an HDMI monitor, if the
+ * Broadcast RGB property is set to limited with a VIC-1 mode, we will
+ * get a limited RGB Quantization Range.
+ */
+static void drm_test_check_broadcast_rgb_limited_cea_mode_vic_1(struct kunit *test)
+{
+	struct drm_atomic_helper_connector_hdmi_priv *priv;
+	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;
+
+	priv = drm_atomic_helper_connector_hdmi_init(test);
+	KUNIT_ASSERT_NOT_NULL(test, priv);
+
+	conn = &priv->connector;
+	KUNIT_ASSERT_TRUE(test, conn->display_info.is_hdmi);
+
+	ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+	mode = drm_display_mode_from_cea_vic(drm, 1);
+	KUNIT_ASSERT_NOT_NULL(test, mode);
+
+	drm = &priv->drm;
+	crtc = priv->crtc;
+	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 = DRM_HDMI_BROADCAST_RGB_LIMITED;
+
+	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,
+			DRM_HDMI_BROADCAST_RGB_LIMITED);
+
+	KUNIT_EXPECT_FALSE(test, conn_state->hdmi.is_full_range);
+}
+
 static struct kunit_case drm_atomic_helper_connector_hdmi_check_tests[] = {
+	KUNIT_CASE(drm_test_check_broadcast_rgb_auto_cea_mode),
+	KUNIT_CASE(drm_test_check_broadcast_rgb_auto_cea_mode_vic_1),
+	KUNIT_CASE(drm_test_check_broadcast_rgb_full_cea_mode),
+	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),
 	KUNIT_CASE(drm_test_check_broadcast_rgb_crtc_mode_changed),
 	KUNIT_CASE(drm_test_check_broadcast_rgb_crtc_mode_not_changed),
 	{ }

-- 
2.43.0