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 28A1DC021A4 for ; Wed, 12 Feb 2025 07:20:32 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D87A710E7C6; Wed, 12 Feb 2025 07:20:31 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="bbSjJV3p"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.16]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8431910E7C6 for ; Wed, 12 Feb 2025 07:20:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1739344831; x=1770880831; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=z9+YiOIIeGyetsx0vqFmWgv40sKAoYN7OiUmY3i3h8Y=; b=bbSjJV3p0GMMoGiXT+/V+mY5i1FXFs9Jpns4bezI8ELA8hqRXiyGTUJA QSkp96rV6b7iHsu1sGVpUJmT/j2mhOXpyMfVbog7y+d0hxhPOwLRaub3+ XojgKS9tO+yzNVWZeBB2VpfQ3+HQfL9+se+/FVTiMmUPmFZoqN9lTKnC8 2XwWp8uGBW6kxwsEK1gYiI9xeya0C7B87KZkipUcjGVGPNwRkrDyvo0fh s0A3ifQylf68pK8dC7XbErz0SiomAt1qJin4RUAZBxH8EmFS+/mCIPQrn wGmW8H/0O+S9j8PIIqXY/3Cxwm6pWJvm3lL24uN31Lz9b6ehFw5lGHrWj w==; X-CSE-ConnectionGUID: F+DNj9bwSQmo1e9znBUaww== X-CSE-MsgGUID: f90bYLPUQSS1fcfCU/HWkg== X-IronPort-AV: E=McAfee;i="6700,10204,11342"; a="27586580" X-IronPort-AV: E=Sophos;i="6.13,279,1732608000"; d="scan'208";a="27586580" Received: from orviesa010.jf.intel.com ([10.64.159.150]) by fmvoesa110.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Feb 2025 23:20:31 -0800 X-CSE-ConnectionGUID: lhW4n2LMSASn6LXdLYfcCg== X-CSE-MsgGUID: tjSL1WnGQtmQns3saxi0Xg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,224,1728975600"; d="scan'208";a="112596763" Received: from kunal-x299-aorus-gaming-3-pro.iind.intel.com ([10.190.239.13]) by orviesa010-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Feb 2025 23:20:29 -0800 From: Jeevan B To: igt-dev@lists.freedesktop.org Cc: karthik.b.s@intel.com, Jeevan B Subject: [PATCH i-g-t 1/3] lib/igt_kms: Add lib changes to check if joiner is enabled for a pipe Date: Wed, 12 Feb 2025 13:06:02 +0530 Message-Id: <20250212073604.1580120-2-jeevan.b@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250212073604.1580120-1-jeevan.b@intel.com> References: <20250212073604.1580120-1-jeevan.b@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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" Added a library change to check if joiner is enabled or not for the given pipe. v2: Update function name and logic to check joiner enabled for exact pipe. v3: Update commit message and rename function name and variable name. v4: Update string from %X to %x. Signed-off-by: Jeevan B --- lib/igt_kms.c | 31 +++++++++++++++++++++++++++++++ lib/igt_kms.h | 1 + 2 files changed, 32 insertions(+) diff --git a/lib/igt_kms.c b/lib/igt_kms.c index 90f44b4d3..3caba7d77 100644 --- a/lib/igt_kms.c +++ b/lib/igt_kms.c @@ -6406,6 +6406,37 @@ bool bigjoiner_mode_found(int drm_fd, drmModeConnector *connector, return found; } +/** + * igt_is_joiner_enabled_for_pipe: + * @drmfd: A drm file descriptor + * @pipe: display pipe + * + * Returns: True if joiner is enabled, false otherwise. + */ +bool igt_is_joiner_enabled_for_pipe(int drmfd, enum pipe pipe) +{ + char buf[16384], master_str[64], slave_str[64]; + int dir, res; + int pipe_mask = 0b11; + + + dir = igt_debugfs_dir(drmfd); + igt_assert(dir >= 0); + + res = igt_debugfs_simple_read(dir, "i915_display_info", + buf, sizeof(buf)); + close(dir); + igt_assert(res >= 0); + pipe_mask <<= pipe; + + snprintf(master_str, sizeof(master_str), + "Linked to 0x%x pipes as a master", pipe_mask); + snprintf(slave_str, sizeof(slave_str), + "Linked to 0x%x pipes as a slave", pipe_mask); + + return (strstr(buf, master_str) && strstr(buf, slave_str)); +} + /** * igt_ultrajoiner_possible: * @mode: libdrm mode diff --git a/lib/igt_kms.h b/lib/igt_kms.h index 8810123fb..1cfacf87d 100644 --- a/lib/igt_kms.h +++ b/lib/igt_kms.h @@ -1245,6 +1245,7 @@ int igt_get_max_dotclock(int fd); bool igt_bigjoiner_possible(int drm_fd, drmModeModeInfo *mode, int max_dotclock); bool bigjoiner_mode_found(int drm_fd, drmModeConnector *connector, int max_dotclock, drmModeModeInfo *mode); +bool igt_is_joiner_enabled_for_pipe(int drmfd, enum pipe pipe); bool igt_ultrajoiner_possible(drmModeModeInfo *mode, int max_dotclock); bool ultrajoiner_mode_found(int drm_fd, drmModeConnector *connector, int max_dotclock, drmModeModeInfo *mode); -- 2.25.1