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Tue, 10 Dec 2024 01:09:41 +0000 (GMT) Received: from nasanex01b.na.qualcomm.com (nasanex01b.na.qualcomm.com [10.46.141.250]) by NASANPPMTA01.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 4BA19fb3021964 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 10 Dec 2024 01:09:41 GMT Received: from jesszhan-linux.qualcomm.com (10.80.80.8) by nasanex01b.na.qualcomm.com (10.46.141.250) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Mon, 9 Dec 2024 17:09:40 -0800 From: Jessica Zhang Date: Mon, 9 Dec 2024 17:09:25 -0800 Subject: [PATCH v2 2/2] drm/tests: Add test for drm_atomic_helper_commit_modeset_disables() MIME-Version: 1.0 Message-ID: <20241209-abhinavk-modeset-fix-v2-2-4d008f6ea8d0@quicinc.com> References: <20241209-abhinavk-modeset-fix-v2-0-4d008f6ea8d0@quicinc.com> In-Reply-To: <20241209-abhinavk-modeset-fix-v2-0-4d008f6ea8d0@quicinc.com> To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter CC: , , , , , Jessica Zhang X-Mailer: b4 0.15-dev-355e8 X-Developer-Signature: v=1; a=ed25519-sha256; t=1733792980; l=8423; i=quic_jesszhan@quicinc.com; s=20230329; h=from:subject:message-id; bh=Z/gdqzPbSxPL9sakO1qvhfjPtkj9tD5yrVD1BEB1tM0=; b=0AT+14BCsVKEHBPsterYxOa8o8tTCvcXn2KVh3Cnpq7WyKAlc+/XUqPcLIT7pBEhwUjj3K2mo yFOuw+iPLYTAlFUqHSaopyNpP70eO8vEzDEYmDA2fKQ90is+76qGY5N X-Developer-Key: i=quic_jesszhan@quicinc.com; a=ed25519; pk=gAUCgHZ6wTJOzQa3U0GfeCDH7iZLlqIEPo4rrjfDpWE= X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nasanex01b.na.qualcomm.com (10.46.141.250) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: 4M-lhgUhe-UInszn3g8jLDcSdRqrncSC X-Proofpoint-ORIG-GUID: 4M-lhgUhe-UInszn3g8jLDcSdRqrncSC X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 clxscore=1015 malwarescore=0 lowpriorityscore=0 mlxlogscore=999 priorityscore=1501 spamscore=0 impostorscore=0 adultscore=0 bulkscore=0 phishscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2411120000 definitions=main-2412100005 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add a subtest to check that modeset is called when the connector is changed Signed-off-by: Jessica Zhang --- drivers/gpu/drm/tests/Makefile | 1 + drivers/gpu/drm/tests/drm_atomic_state_test.c | 242 ++++++++++++++++++++++++++ 2 files changed, 243 insertions(+) diff --git a/drivers/gpu/drm/tests/Makefile b/drivers/gpu/drm/tests/Makefile index 56dab563abd7a7ee7c147bd6b4927e2436b82e1d..0109bcf7faa54993cce337f522eae78f0fa6ffcb 100644 --- a/drivers/gpu/drm/tests/Makefile +++ b/drivers/gpu/drm/tests/Makefile @@ -4,6 +4,7 @@ obj-$(CONFIG_DRM_KUNIT_TEST_HELPERS) += \ drm_kunit_helpers.o obj-$(CONFIG_DRM_KUNIT_TEST) += \ + drm_atomic_state_test.o \ drm_buddy_test.o \ drm_cmdline_parser_test.o \ drm_connector_test.o \ diff --git a/drivers/gpu/drm/tests/drm_atomic_state_test.c b/drivers/gpu/drm/tests/drm_atomic_state_test.c new file mode 100644 index 0000000000000000000000000000000000000000..ffc1198ccc9ce103b9bc4c5ca8c83ca7f6ab19cc --- /dev/null +++ b/drivers/gpu/drm/tests/drm_atomic_state_test.c @@ -0,0 +1,242 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Test cases for the drm_atomic_state helpers + * + * Copyright (c) 2024 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#include +#include +#include +#include +#include + +#define DRM_TEST_ENC_0 BIT(0) +#define DRM_TEST_ENC_1 BIT(1) +#define DRM_TEST_ENC_2 BIT(2) + +#define DRM_TEST_CONN_0 BIT(0) + +static const struct drm_display_mode drm_atomic_test_mode = { + DRM_MODE("1024x768", 0, 65000, 1024, 1048, + 1184, 1344, 0, 768, 771, 777, 806, 0, + DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) +}; + +struct drm_atomic_check_priv { + struct drm_device drm; + struct drm_plane *plane; + struct drm_crtc *crtc; + struct drm_encoder encoders[3]; + struct drm_connector connectors[2]; +}; + +static int modeset_counter; + +static void drm_test_encoder_mode_set(struct drm_encoder *encoder, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state) +{ + modeset_counter++; +} + +static const struct drm_encoder_helper_funcs drm_test_encoder_funcs = { + .atomic_mode_set = drm_test_encoder_mode_set, +}; + +static const struct drm_connector_funcs dummy_connector_funcs = { + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, + .reset = drm_atomic_helper_connector_reset, +}; + +static int drm_atomic_test_dummy_get_modes(struct drm_connector *connector) +{ + drm_connector_helper_get_modes_fixed(connector, &drm_atomic_test_mode); + return 1; +} + +static const struct drm_connector_helper_funcs dummy_connector_helper_funcs = { + .get_modes = drm_atomic_test_dummy_get_modes, +}; + +static struct drm_atomic_check_priv * +drm_test_init_drm_components(struct kunit *test, bool has_connectors) +{ + struct drm_atomic_check_priv *priv; + struct drm_encoder *enc; + struct drm_device *drm; + struct device *dev; + int ret; + + dev = drm_kunit_helper_alloc_device(test); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dev); + + priv = drm_kunit_helper_alloc_drm_device(test, dev, + struct drm_atomic_check_priv, + drm, + DRIVER_MODESET | DRIVER_ATOMIC); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv); + test->priv = priv; + + drm = &priv->drm; + priv->plane = drm_kunit_helper_create_primary_plane(test, drm, + NULL, + NULL, + NULL, 0, + NULL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->plane); + + priv->crtc = drm_kunit_helper_create_crtc(test, drm, + priv->plane, NULL, + NULL, + NULL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->crtc); + + for (int i = 0; i < ARRAY_SIZE(priv->encoders); i++) { + enc = &priv->encoders[i]; + + ret = drmm_encoder_init(drm, enc, NULL, + DRM_MODE_ENCODER_DSI, NULL); + KUNIT_ASSERT_EQ(test, ret, 0); + + enc->possible_crtcs = drm_crtc_mask(priv->crtc); + } + + priv->encoders[0].possible_clones = DRM_TEST_ENC_0 | DRM_TEST_ENC_1; + priv->encoders[1].possible_clones = DRM_TEST_ENC_0 | DRM_TEST_ENC_1; + priv->encoders[2].possible_clones = DRM_TEST_ENC_2; + + if (!has_connectors) + goto done; + + struct drm_connector *conn; + + KUNIT_ASSERT_LE(test, ARRAY_SIZE(priv->connectors), + ARRAY_SIZE(priv->encoders)); + + + for (int i = 0; i < ARRAY_SIZE(priv->connectors); i++) { + conn = &priv->connectors[i]; + + ret = drmm_connector_init(drm, conn, &dummy_connector_funcs, + DRM_MODE_CONNECTOR_DSI, NULL); + KUNIT_ASSERT_EQ(test, ret, 0); + + drm_connector_helper_add(conn, &dummy_connector_helper_funcs); + drm_encoder_helper_add(&priv->encoders[i], &drm_test_encoder_funcs); + + drm_connector_attach_encoder(conn, &priv->encoders[i]); + } + +done: + drm_mode_config_reset(drm); + + return priv; +} + +static int set_up_atomic_state(struct kunit *test, + struct drm_atomic_check_priv *priv, + struct drm_connector *connector, + struct drm_modeset_acquire_ctx *ctx) +{ + struct drm_device *drm = &priv->drm; + struct drm_crtc *crtc = priv->crtc; + struct drm_atomic_state *state; + struct drm_connector_state *conn_state; + struct drm_crtc_state *crtc_state; + int ret; + + state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state); + + if (connector) { + conn_state = drm_atomic_get_connector_state(state, connector); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, conn_state); + + ret = drm_atomic_set_crtc_for_connector(conn_state, crtc); + KUNIT_EXPECT_EQ(test, ret, 0); + } + + crtc_state = drm_atomic_get_crtc_state(state, crtc); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc_state); + + ret = drm_atomic_set_mode_for_crtc(crtc_state, &drm_atomic_test_mode); + KUNIT_EXPECT_EQ(test, ret, 0); + + crtc_state->enable = true; + crtc_state->active = true; + + if (connector) { + ret = drm_atomic_commit(state); + KUNIT_ASSERT_EQ(test, ret, 0); + } else { + // dummy connector mask + crtc_state->connector_mask = DRM_TEST_CONN_0; + } + + return 0; +} + +static void drm_test_modeset(struct kunit *test) +{ + struct drm_atomic_check_priv *priv; + struct drm_modeset_acquire_ctx *ctx; + struct drm_connector *old_conn, *new_conn; + struct drm_atomic_state *state; + struct drm_device *drm; + struct drm_connector_state *new_conn_state, *old_conn_state; + int ret, initial_modeset_count; + + priv = drm_test_init_drm_components(test, true); + KUNIT_ASSERT_NOT_NULL(test, priv); + + drm = &priv->drm; + old_conn = &priv->connectors[0]; + new_conn = &priv->connectors[1]; + + ctx = drm_kunit_helper_acquire_ctx_alloc(test); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx); + + // first modeset to enable + ret = set_up_atomic_state(test, priv, old_conn, 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); + + new_conn_state = drm_atomic_get_connector_state(state, new_conn); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, new_conn_state); + + old_conn_state = drm_atomic_get_connector_state(state, old_conn); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, old_conn_state); + + ret = drm_atomic_set_crtc_for_connector(old_conn_state, NULL); + KUNIT_EXPECT_EQ(test, ret, 0); + + ret = drm_atomic_set_crtc_for_connector(new_conn_state, priv->crtc); + KUNIT_EXPECT_EQ(test, ret, 0); + + initial_modeset_count = modeset_counter; + + // modeset_disables is called as part of the atomic commit tail + ret = drm_atomic_commit(state); + KUNIT_ASSERT_EQ(test, ret, 0); + KUNIT_ASSERT_EQ(test, modeset_counter, initial_modeset_count + 1); +} + +static struct kunit_case drm_test_check_modeset_test[] = { + KUNIT_CASE(drm_test_modeset), + {} +}; + +static struct kunit_suite drm_test_check_modeset_test_suite = { + .name = "drm_validate_modeset", + .test_cases = drm_test_check_modeset_test, +}; + +kunit_test_suite(drm_test_check_modeset_test_suite); + +MODULE_AUTHOR("Jessica Zhang