From patchwork Thu Jul 30 06:49:37 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mika Kahola X-Patchwork-Id: 6898841 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 3D421C05AC for ; Thu, 30 Jul 2015 06:47:51 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 6D6CC2052A for ; Thu, 30 Jul 2015 06:47:50 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 5EDC920527 for ; Thu, 30 Jul 2015 06:47:49 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B8DD66E441; Wed, 29 Jul 2015 23:47:48 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTP id 5424D6E467 for ; Wed, 29 Jul 2015 23:47:45 -0700 (PDT) Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga103.jf.intel.com with ESMTP; 29 Jul 2015 23:47:45 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,575,1432623600"; d="scan'208";a="758183040" Received: from sorvi.fi.intel.com ([10.237.72.58]) by fmsmga001.fm.intel.com with ESMTP; 29 Jul 2015 23:47:44 -0700 From: Mika Kahola To: intel-gfx@lists.freedesktop.org Date: Thu, 30 Jul 2015 09:49:37 +0300 Message-Id: <1438238978-10638-11-git-send-email-mika.kahola@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1438238978-10638-1-git-send-email-mika.kahola@intel.com> References: <1438238978-10638-1-git-send-email-mika.kahola@intel.com> Subject: [Intel-gfx] [PATCH v2 10/11] drm/i915: DVO pixel clock check 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=-5.6 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 It is possible the we request to have a mode that has higher pixel clock than our HW can support. This patch checks if requested pixel clock is lower than the one supported by the HW. The requested mode is discarded if we cannot support the requested pixel clock. This patch applies to DVO. V2: - removed computation for max pixel clock Signed-off-by: Mika Kahola --- drivers/gpu/drm/i915/intel_dvo.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_dvo.c b/drivers/gpu/drm/i915/intel_dvo.c index fd5e522..7afcfa4 100644 --- a/drivers/gpu/drm/i915/intel_dvo.c +++ b/drivers/gpu/drm/i915/intel_dvo.c @@ -247,6 +247,8 @@ intel_dvo_mode_valid(struct drm_connector *connector, struct drm_display_mode *mode) { struct intel_dvo *intel_dvo = intel_attached_dvo(connector); + struct drm_i915_private *dev_priv = intel_dvo->dev.dev_priv; + int max_pixclk = dev_priv->max_dotclk; if (mode->flags & DRM_MODE_FLAG_DBLSCAN) return MODE_NO_DBLESCAN; @@ -260,6 +262,9 @@ intel_dvo_mode_valid(struct drm_connector *connector, return MODE_PANEL; } + if (mode->clock > max_pixclk) + return MODE_CLOCK_HIGH; + return intel_dvo->dev.dev_ops->mode_valid(&intel_dvo->dev, mode); }