From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id 65F116E497 for ; Fri, 9 Apr 2021 11:39:44 +0000 (UTC) From: Bhanuprakash Modem Date: Sat, 10 Apr 2021 01:00:43 +0530 Message-Id: <20210409193048.6857-1-bhanuprakash.modem@intel.com> MIME-Version: 1.0 Subject: [igt-dev] [PATCH i-g-t 0/5] Fix mode selection for 2x tests List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" To: igt-dev@lists.freedesktop.org List-ID: When two monitors connected through MST, the second monitor also tries to use the same mode. So two such modes may not fit into the link bandwidth. This series will find a combination of modes that fit into the BW. By parsing the PATH property, we can add a link_group_id field to igt_output_t to identify all connectors that shares the BW of the same link. Parsing the PATH property consists of finding all connectors with the same X prefix in the X-Y[-Z...] path property format and assigning a unique non-zero link_group_id to all such connectors. Connectors without a PATH property are not an MST output, so their link_group_id can be left at 0. IGT core helper would override the mode on all connectors that will be modeset by the next igt_display_commit() call in the test. These are all the connectors in igt_display_t that have a pending_pipe set by the test up to the point of calling this helper. Signed-off-by: Bhanuprakash Modem Bhanuprakash Modem (5): lib/igt_kms: Add a support to read PATH connector property lib/igt_kms: Identify outputs that shares link bandwidth lib/igt_kms: helper to override the mode on all connectors tests/kms_frontbuffer_tracking: Fix mode selection for 2x tests tests/kms_cursor_legacy: Fix mode selection for 2x tests lib/igt_kms.c | 71 ++++++++++++++++++++++++++++++++ lib/igt_kms.h | 3 ++ tests/kms_cursor_legacy.c | 53 ++++++++++++++++++++++-- tests/kms_frontbuffer_tracking.c | 35 ++++++++++++++++ 4 files changed, 159 insertions(+), 3 deletions(-) -- 2.20.1 _______________________________________________ igt-dev mailing list igt-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/igt-dev