From patchwork Tue Jan 5 12:50:24 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shubhangi Shrivastava X-Patchwork-Id: 7954611 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id A9B0ABEEED for ; Tue, 5 Jan 2016 12:47:26 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id CD16D20384 for ; Tue, 5 Jan 2016 12:47:25 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id C229820380 for ; Tue, 5 Jan 2016 12:47:24 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0F5B46E1A1; Tue, 5 Jan 2016 04:47:24 -0800 (PST) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTP id 5EE366E1A1 for ; Tue, 5 Jan 2016 04:47:23 -0800 (PST) Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga102.fm.intel.com with ESMTP; 05 Jan 2016 04:47:23 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,525,1444719600"; d="scan'208";a="874930757" Received: from shubhangi-desktop.iind.intel.com ([10.223.25.115]) by fmsmga001.fm.intel.com with ESMTP; 05 Jan 2016 04:47:21 -0800 From: Shubhangi Shrivastava To: intel-gfx@lists.freedesktop.org Date: Tue, 5 Jan 2016 18:20:24 +0530 Message-Id: <1451998226-21433-5-git-send-email-shubhangi.shrivastava@intel.com> X-Mailer: git-send-email 2.6.1 In-Reply-To: <1451998226-21433-1-git-send-email-shubhangi.shrivastava@intel.com> References: <1451998226-21433-1-git-send-email-shubhangi.shrivastava@intel.com> Cc: Shubhangi Shrivastava Subject: [Intel-gfx] [PATCH 4/6] drm/i915: Save sink_count for tracking changes to it X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Sink count can change between short pulse hpd hence this patch adds a member variable to intel_dp so we can track any changes between short pulse interrupts. Tested-by: Nathan D Ciobanu Signed-off-by: Sivakumar Thulasimani Signed-off-by: Shubhangi Shrivastava --- drivers/gpu/drm/i915/intel_dp.c | 7 +++---- drivers/gpu/drm/i915/intel_drv.h | 1 + 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 842790e..c2e8516 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -4385,14 +4385,13 @@ intel_dp_detect_dpcd(struct intel_dp *intel_dp) /* If we're HPD-aware, SINK_COUNT changes dynamically */ if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && intel_dp->downstream_ports[0] & DP_DS_PORT_HPD) { - uint8_t reg; if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_COUNT, - ®, 1) < 0) + &intel_dp->sink_count, 1) < 0) return connector_status_unknown; - return DP_GET_SINK_COUNT(reg) ? connector_status_connected - : connector_status_disconnected; + return DP_GET_SINK_COUNT(intel_dp->sink_count) ? + connector_status_connected : connector_status_disconnected; } /* If no HPD, poke DDC gently */ diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 0438b57..88b05ba 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -757,6 +757,7 @@ struct intel_dp { uint32_t DP; int link_rate; uint8_t lane_count; + uint8_t sink_count; bool has_audio; enum hdmi_force_audio force_audio; bool limited_color_range;