From patchwork Tue Oct 23 20:18:46 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Que X-Patchwork-Id: 1632931 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by patchwork2.kernel.org (Postfix) with ESMTP id 21E27DF283 for ; Tue, 23 Oct 2012 20:19:50 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E6E809F75B for ; Tue, 23 Oct 2012 13:19:49 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mail-wg0-f73.google.com (mail-wg0-f73.google.com [74.125.82.73]) by gabe.freedesktop.org (Postfix) with ESMTP id 335479EB1B for ; Tue, 23 Oct 2012 13:19:37 -0700 (PDT) Received: by mail-wg0-f73.google.com with SMTP id dt12so247095wgb.0 for ; Tue, 23 Oct 2012 13:19:36 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=from:to:cc:subject:date:message-id:x-mailer:x-gm-message-state; bh=WFifbS2M1kCGwoXN8ouSeqDk47y+P615vNGH6vs1UOg=; b=dqvw2EPiNvzfBp5ayrhJWNV7v3WcwuMVflclocOAR7xUFafy3SUexMJH7DbTOTuXPC TZxBc7PYXDDxB/l53CaWiRKS5DApy0InUbTenxNM2Ne0afIXAIYqAIX7FdBBK/r6hMD6 OkZd4C9uV7j9oc9ks+Nt8SOK0dogWJRAT+8LwpEtaeMAjBYp54WSHOzvXL8CoLUzocyR mQ5FrkXztBFcDlzzxt/m4TAkwqUlzOH3VmjSt14ldwofE1M75TRpm9jNI/pdrE7p/zYM Sii7nzwm45mvfM140gMJyfjh2A+A/3X63KnRjSloft2sGVgpvj77KKi+2nXQ4RMf8M37 vXcg== Received: by 10.180.75.197 with SMTP id e5mr59149wiw.1.1351023576443; Tue, 23 Oct 2012 13:19:36 -0700 (PDT) Received: from hpza10.eem.corp.google.com ([74.125.121.33]) by gmr-mx.google.com with ESMTPS id gp9si27104wib.0.2012.10.23.13.19.36 (version=TLSv1/SSLv3 cipher=AES128-SHA); Tue, 23 Oct 2012 13:19:36 -0700 (PDT) Received: from sq.mtv.corp.google.com (sq.mtv.corp.google.com [172.22.73.146]) by hpza10.eem.corp.google.com (Postfix) with ESMTP id 0F40C20004E; Tue, 23 Oct 2012 13:19:36 -0700 (PDT) Received: by sq.mtv.corp.google.com (Postfix, from userid 118240) id 50B7481BEC; Tue, 23 Oct 2012 13:19:35 -0700 (PDT) From: Simon Que To: intel-gfx@lists.freedesktop.org Date: Tue, 23 Oct 2012 13:18:46 -0700 Message-Id: <1351023526-28825-1-git-send-email-sque@chromium.org> X-Mailer: git-send-email 1.7.7.3 X-Gm-Message-State: ALoCoQkJao3DtiRepW62q0/m2sIr2LZNBj3yDJJV2qGVZKIPn4sGaFNQSPawKofeZcdtnwmH+3XUIyI7rzT2OjX8gzUDbLprjVZUX6HhGmSlC+6HkwpftYZ4r9U905wAu14dioKcyZerbrCK3eHMiZFW3E4y450E8skemcpJKcRYhu7bg1eu4OCGoDIssuLIiWNvfAx/tccoNWC2Ea7JjI2ulJ2cbb7f9A== Cc: Simon Que Subject: [Intel-gfx] [PATCH] drm/i915: do not set redundant DP dpms mode X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org Add a check to intel_dp_dpms() to skip setting the DP's DPMS mode if the current mode is the same as the new one. Signed-off-by: Simon Que --- drivers/gpu/drm/i915/intel_dp.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index c71e0f0..ba86b4f 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1311,8 +1311,13 @@ intel_dp_dpms(struct drm_encoder *encoder, int mode) struct intel_dp *intel_dp = enc_to_intel_dp(encoder); struct drm_device *dev = encoder->dev; struct drm_i915_private *dev_priv = dev->dev_private; + struct drm_connector *connector; uint32_t dp_reg = I915_READ(intel_dp->output_reg); + list_for_each_entry(connector, &dev->mode_config.connector_list, head) + if (connector->encoder == encoder && connector->dpms == mode) + return; + if (mode != DRM_MODE_DPMS_ON) { ironlake_edp_backlight_off(intel_dp); ironlake_edp_panel_off(intel_dp);