From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 68A3CC41513 for ; Tue, 9 Jul 2024 15:34:56 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1425110E5A2; Tue, 9 Jul 2024 15:34:56 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=bootlin.com header.i=@bootlin.com header.b="Wqzc7QSA"; dkim-atps=neutral Received: from relay7-d.mail.gandi.net (relay7-d.mail.gandi.net [217.70.183.200]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2B1B310E5AA for ; Tue, 9 Jul 2024 15:34:54 +0000 (UTC) Received: by mail.gandi.net (Postfix) with ESMTPSA id A02842000D; Tue, 9 Jul 2024 15:34:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1720539292; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=v8N/mWbm20nhv3rrF/eiWcHG+T92dbKo72EyuWyRun8=; b=Wqzc7QSAtjw76w3sF9oG0skNxSFXWkm/J1b/+Zxz+1OWQqpeI7gBawYyBbrQoinIofWXXr 2aLh6PphoRrZD47EkOn2cgygIRFqir3FW8xdZjGP/mTah/M2xUcVvgGZiTypDgyXITXOql k0a+RXFJ3OJz4c8onuteGsBe1ySQ9yjU0nLtBjALEMTXQeuq+ZJESRlZ4PnyXnR82h2fNQ W8CIy7u9MAC/gju1NrwxokTFlzS1Tqs38Csr9gwdVdzYhk3V8wSFzqPygJSvx4riE/pmGH lLK4NZh4e1iFTH89dWdEd+LsoN3PwKzSExmpigbj1MF13rXi64QjknU3Aowm8Q== From: Louis Chauvet Date: Tue, 09 Jul 2024 17:34:19 +0200 Subject: [PATCH i-g-t v2 03/39] lib/igt_kms: Add function to list connected connectors MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20240709-dev-remove-static-ports-v2-3-5adfc6985778@bootlin.com> References: <20240709-dev-remove-static-ports-v2-0-5adfc6985778@bootlin.com> In-Reply-To: <20240709-dev-remove-static-ports-v2-0-5adfc6985778@bootlin.com> To: igt-dev@lists.freedesktop.org, ihf@google.com, markyacoub@google.com, thomas.petazzoni@bootlin.com, jeremie.dautheribes@bootlin.com Cc: Louis Chauvet X-Mailer: b4 0.14-dev X-Developer-Signature: v=1; a=openpgp-sha256; l=2998; i=louis.chauvet@bootlin.com; h=from:subject:message-id; bh=gYSyminlPu5TwyFAN3xzO+3UCPXxT998gJA8TvdCzvs=; b=owEBbQKS/ZANAwAIASCtLsZbECziAcsmYgBmjViWAtHfavXI1FsGqmjI4Kky1btH1UoXQ4fTv yN+2NY2TQWJAjMEAAEIAB0WIQRPj7g/vng8MQxQWQQgrS7GWxAs4gUCZo1YlgAKCRAgrS7GWxAs 4lD2D/424DH9N/Mo5N0EWL5QZyWwkYZ6ye3Vzk4nVyXN3kLLSsjT7uV2heU0DWWm0Vs+jHoRwe1 EmAulfkehEjVZNRc8n2zG2XzBTG5BE04iacd5FjXMmk3kG4jz1Jn6Xoi6xOuYLdL2LjqLcDtWiX C3JPqdg1qhzNLkOKepBpAPCJqqPDEtFBYYbhWM6kYpS8LZEXgV28iWfZ332pZSJoYd/3qg9bXgn 6QMrap/1IJDLV1T9SHenzEL33YAh9u7PWBxTwEZRVuiKJxVKSQzwMattu5foMaGfYATolK09LCA 8aUU3Gt0deRRdTkFanFFvd58xeceW/izhd2H7V77Qp0LtpaMP3uFmRUo0sCwSnWrT09jIeVNOd6 4IWJQEJR9N/wn87t8sEhLuyfr7FMyWDiw2ESMFr5sDjnGTLXj1DwYWp8bXGauvgUjHWDYy+g2xU EigeTgV3NPOdv1LaU8ZVHTjhTVf6WLWSDQa6i1m9hf0o/phoQdJsa1/9A7Xvyy4F3NkqWNw2lzu ZQrizsNf/eeyLBolz91vQDksf7uiQ6ujC/p0mQzi3nEorwW+MFNf3tnAg6nvpXqGTQSi8LuMgl2 oo/X5LCdtqImQkK5lEkstrhKf+d5XDwEdJLRfCm0+QM3M6q01eNOQqCDO1eqN+M82hOS/cLswfp iI0XyVUqth/Pigg== X-Developer-Key: i=louis.chauvet@bootlin.com; a=openpgp; fpr=8B7104AE9A272D6693F527F2EC1883F55E0B40A5 X-GND-Sasl: louis.chauvet@bootlin.com X-BeenThere: igt-dev@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development mailing list for IGT GPU Tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" Introduce the igt_get_connected_connectors() function, which returns a list of connector IDs that are currently connected according to DRM. This function includes a timeout mechanism because connectors can be unplugged at any time. Also, especially with MST, the connector can be listed by drmModeGetResources() but not yet accessible with drmModeGetConnector(). Signed-off-by: Louis Chauvet --- lib/igt_kms.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ lib/igt_kms.h | 1 + 2 files changed, 55 insertions(+) diff --git a/lib/igt_kms.c b/lib/igt_kms.c index bb4c065ab4ed..f1eadf190168 100644 --- a/lib/igt_kms.c +++ b/lib/igt_kms.c @@ -6724,3 +6724,57 @@ bool igt_wait_for_connector_status(int drm_fd, unsigned int connector_id, double connector_id); return false; } + +/** + * igt_get_connected_connectors - List all connectors reported as CONNECTED by DRM. + * + * @drm_fd: DRM file description + * @connector_ids: out pointer for the list of connector ids connected. It must be freed by the + * caller. + * + * The returns value is the number of connectors + */ +int igt_get_connected_connectors(int drm_fd, uint32_t **connector_ids) +{ + int connected_count = 0; + drmModeResPtr resources; + struct timespec start, end; + + *connector_ids = malloc(0); + + resources = drmModeGetResources(drm_fd); + for (int j = 0; j < resources->count_connectors; j++) { + drmModeConnectorPtr connector = NULL; + + connector = drmModeGetConnector(drm_fd, resources->connectors[j]); + /* + * This time is required as sometimes some id in the connector list are not totally + * ready or can disappear + */ + clock_gettime(CLOCK_MONOTONIC, &start); + clock_gettime(CLOCK_MONOTONIC, &end); + while (!connector && + igt_time_elapsed(&start, &end) < igt_default_detect_timeout()) { + connector = drmModeGetConnector(drm_fd, resources->connectors[j]); + clock_gettime(CLOCK_MONOTONIC, &end); + } + + if (igt_time_elapsed(&start, &end) < igt_default_detect_timeout()) { + igt_assert(connector); + + if (connector->connection == DRM_MODE_CONNECTED) { + *connector_ids = reallocarray(*connector_ids, + connected_count + + 1, sizeof(**connector_ids)); + igt_assert(*connector_ids); + (*connector_ids)[connected_count] = resources->connectors[j]; + connected_count++; + } + drmModeFreeConnector(connector); + } + } + drmModeFreeResources(resources); + + return + connected_count; +} diff --git a/lib/igt_kms.h b/lib/igt_kms.h index ba8658ce45e5..1964c725161e 100644 --- a/lib/igt_kms.h +++ b/lib/igt_kms.h @@ -1235,5 +1235,6 @@ float igt_default_detect_timeout(void); bool igt_wait_for_connector_status(int drm_fd, unsigned int connector_id, double timeout, int drm_mode); +int igt_get_connected_connectors(int drm_fd, uint32_t **connector_ids); #endif /* __IGT_KMS_H__ */ -- 2.44.2