From patchwork Fri Mar 11 18:51:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Souza, Jose" X-Patchwork-Id: 12778524 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 C08B4C433EF for ; Fri, 11 Mar 2022 18:50:58 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 3EC5110E9A0; Fri, 11 Mar 2022 18:50:58 +0000 (UTC) Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by gabe.freedesktop.org (Postfix) with ESMTPS id DF80110E9A0 for ; Fri, 11 Mar 2022 18:50:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1647024656; x=1678560656; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=w/UlFlC9oZRIRrdO6Ojlt1rzZdbCwFBAWCWFlvJcb/0=; b=hJ/4erPPJKADODjM/2/xQHuN3Rc/vbziyyTg2GhA005fg7dwXVdd/BeS Jq6G7/oxWtUhRLGg48Ir9mhbbO27skPPdvQX853KLFksV3kaC4T4IaG6L 5jfza2/UGTd8EAwOgKIjXQOgSNqeZxUvjcBX5ulZKSowCCZR+QcSG8611 OWkjHPgjbz0RMJsgz8Qi6QEsJZn/CxmWxKE3NWPZtoEtIHcTEQDwZ6aQd UTf5QIavq1eBOKJj7rmlfyiaho2yKDEH46+5prp+M9ilCqwCEIHf79Q0o N1/bzPmx0Xds0t2j0vLmCg4/P2ZpYm8kwZThb0ki9ibuPy+BscthNuZvu Q==; X-IronPort-AV: E=McAfee;i="6200,9189,10283"; a="236234465" X-IronPort-AV: E=Sophos;i="5.90,174,1643702400"; d="scan'208";a="236234465" Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Mar 2022 10:50:56 -0800 X-IronPort-AV: E=Sophos;i="5.90,174,1643702400"; d="scan'208";a="712935828" Received: from wangxin1-mobl1.amr.corp.intel.com (HELO josouza-mobl2.amr.corp.intel.com) ([10.209.177.147]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Mar 2022 10:50:54 -0800 From: =?utf-8?q?Jos=C3=A9_Roberto_de_Souza?= To: intel-gfx@lists.freedesktop.org Date: Fri, 11 Mar 2022 10:51:48 -0800 Message-Id: <20220311185149.110527-1-jose.souza@intel.com> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v2 1/2] drm/i915/display: Fix HPD short pulse handling for eDP X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jani Nikula Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Commit 13ea6db2cf24 ("drm/i915/edp: Ignore short pulse when panel powered off") completely broke short pulse handling for eDP as it is usually generated by sink when it is displaying image and there is some error or status that source needs to handle. When power panel is enabled, this state is enough to power aux transactions and VDD override is disabled, so intel_pps_have_power() is always returning false causing short pulses to be ignored. So here better naming this function that intends to check if aux lines are powered to avoid the endless cycle mentioned in the commit being fixed and fixing the check for what it is intended. v2: - renamed to intel_pps_have_panel_power_or_vdd() - fixed indentation Fixes: 13ea6db2cf24 ("drm/i915/edp: Ignore short pulse when panel powered off") Cc: Anshuman Gupta Cc: Jani Nikula Cc: Uma Shankar Cc: Ville Syrjälä Reviewed-by: Ville Syrjälä Signed-off-by: José Roberto de Souza --- drivers/gpu/drm/i915/display/intel_dp.c | 2 +- drivers/gpu/drm/i915/display/intel_pps.c | 6 +++--- drivers/gpu/drm/i915/display/intel_pps.h | 2 +- 3 files changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 619546441eae5..e83947fe2411a 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -4867,7 +4867,7 @@ intel_dp_hpd_pulse(struct intel_digital_port *dig_port, bool long_hpd) struct intel_dp *intel_dp = &dig_port->dp; if (dig_port->base.type == INTEL_OUTPUT_EDP && - (long_hpd || !intel_pps_have_power(intel_dp))) { + (long_hpd || !intel_pps_have_panel_power_or_vdd(intel_dp))) { /* * vdd off can generate a long/short pulse on eDP which * would require vdd on to handle it, and thus we diff --git a/drivers/gpu/drm/i915/display/intel_pps.c b/drivers/gpu/drm/i915/display/intel_pps.c index 9c986e8932f87..64bd4ca0edd47 100644 --- a/drivers/gpu/drm/i915/display/intel_pps.c +++ b/drivers/gpu/drm/i915/display/intel_pps.c @@ -1075,14 +1075,14 @@ static void intel_pps_vdd_sanitize(struct intel_dp *intel_dp) edp_panel_vdd_schedule_off(intel_dp); } -bool intel_pps_have_power(struct intel_dp *intel_dp) +bool intel_pps_have_panel_power_or_vdd(struct intel_dp *intel_dp) { intel_wakeref_t wakeref; bool have_power = false; with_intel_pps_lock(intel_dp, wakeref) { - have_power = edp_have_panel_power(intel_dp) && - edp_have_panel_vdd(intel_dp); + have_power = edp_have_panel_power(intel_dp) || + edp_have_panel_vdd(intel_dp); } return have_power; diff --git a/drivers/gpu/drm/i915/display/intel_pps.h b/drivers/gpu/drm/i915/display/intel_pps.h index fbb47f6f453e4..e64144659d31f 100644 --- a/drivers/gpu/drm/i915/display/intel_pps.h +++ b/drivers/gpu/drm/i915/display/intel_pps.h @@ -37,7 +37,7 @@ void intel_pps_vdd_on(struct intel_dp *intel_dp); void intel_pps_on(struct intel_dp *intel_dp); void intel_pps_off(struct intel_dp *intel_dp); void intel_pps_vdd_off_sync(struct intel_dp *intel_dp); -bool intel_pps_have_power(struct intel_dp *intel_dp); +bool intel_pps_have_panel_power_or_vdd(struct intel_dp *intel_dp); void intel_pps_wait_power_cycle(struct intel_dp *intel_dp); void intel_pps_init(struct intel_dp *intel_dp);