From patchwork Fri Aug 14 10:03:26 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Mika Kahola X-Patchwork-Id: 7013661 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 8BCC09F373 for ; Fri, 14 Aug 2015 10:04:11 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B897A20788 for ; Fri, 14 Aug 2015 10:04:09 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id A1750207C6 for ; Fri, 14 Aug 2015 10:04:08 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4B9E06EF3D; Fri, 14 Aug 2015 03:04:08 -0700 (PDT) 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 57F786EF3B for ; Fri, 14 Aug 2015 03:04:06 -0700 (PDT) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga102.fm.intel.com with ESMTP; 14 Aug 2015 03:04:06 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,676,1432623600"; d="scan'208";a="783597322" Received: from sorvi.fi.intel.com ([10.237.72.58]) by fmsmga002.fm.intel.com with ESMTP; 14 Aug 2015 03:04:05 -0700 From: Mika Kahola To: intel-gfx@lists.freedesktop.org Date: Fri, 14 Aug 2015 13:03:26 +0300 Message-Id: <1439546611-3191-7-git-send-email-mika.kahola@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1439546611-3191-1-git-send-email-mika.kahola@intel.com> References: <1439546611-3191-1-git-send-email-mika.kahola@intel.com> Subject: [Intel-gfx] [PATCH v4 06/11] drm/i915: DSI 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=-5.2 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 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 DSI. V2: - removed computation for max pixel clock V3: - cleanup by removing unnecessary lines V4: - max_pixclk variable renamed as max_dotclk - moved dot clock checking inside 'if (fixed_mode)' Signed-off-by: Mika Kahola Reviewed-by: Ville Syrjälä --- drivers/gpu/drm/i915/intel_dsi.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c index 4a601cf..00c6b1f 100644 --- a/drivers/gpu/drm/i915/intel_dsi.c +++ b/drivers/gpu/drm/i915/intel_dsi.c @@ -654,6 +654,7 @@ intel_dsi_mode_valid(struct drm_connector *connector, { struct intel_connector *intel_connector = to_intel_connector(connector); struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode; + int max_dotclk = to_i915(connector->dev)->max_dotclk_freq; DRM_DEBUG_KMS("\n"); @@ -667,6 +668,8 @@ intel_dsi_mode_valid(struct drm_connector *connector, return MODE_PANEL; if (mode->vdisplay > fixed_mode->vdisplay) return MODE_PANEL; + if (mode->clock > max_dotclk) + return MODE_CLOCK_HIGH; } return MODE_OK;