From patchwork Tue May 31 09:25:45 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Sharma, Shashank" X-Patchwork-Id: 9143983 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 88CB360777 for ; Tue, 31 May 2016 09:16:38 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7C2D22793B for ; Tue, 31 May 2016 09:16:38 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7115428185; Tue, 31 May 2016 09:16:38 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 30DCD2793B for ; Tue, 31 May 2016 09:16:38 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 208496E338; Tue, 31 May 2016 09:16:33 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTP id B452E6E24F for ; Tue, 31 May 2016 09:16:28 +0000 (UTC) Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga101.fm.intel.com with ESMTP; 31 May 2016 02:16:29 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.26,395,1459839600"; d="scan'208";a="711474886" Received: from shashanks-desktop.iind.intel.com ([10.223.26.24]) by FMSMGA003.fm.intel.com with ESMTP; 31 May 2016 02:16:26 -0700 From: Shashank Sharma To: intel-gfx@lists.freedesktop.org, ville.syrjala@linux.intel.com, paulo.r.zanoni@intel.com Date: Tue, 31 May 2016 14:55:45 +0530 Message-Id: <1464686746-5099-5-git-send-email-shashank.sharma@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1464686746-5099-1-git-send-email-shashank.sharma@intel.com> References: <1464686746-5099-1-git-send-email-shashank.sharma@intel.com> Cc: daniel.vetter@intel.com Subject: [Intel-gfx] [PATCH 4/5] drm/i915: Parse VBT data for lspcon 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-Virus-Scanned: ClamAV using ClamSMTP Many GEN9 boards come with on-board lspcon cards. Fot these boards, VBT configuration should properly point out if a particular port contains lspcon device, so that driver can initialize it properly. This patch adds a utility function, which checks the VBT flag for lspcon bit, and tells us if a port is configured to have a lspcon device or not. Signed-off-by: Shashank Sharma --- drivers/gpu/drm/i915/i915_drv.h | 3 +++ drivers/gpu/drm/i915/intel_bios.c | 44 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 47 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index e4c8e34..32ddde5 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -3622,6 +3622,9 @@ bool intel_bios_is_port_dp_dual_mode(struct drm_i915_private *dev_priv, enum por bool intel_bios_is_dsi_present(struct drm_i915_private *dev_priv, enum port *port); bool intel_bios_is_port_hpd_inverted(struct drm_i915_private *dev_priv, enum port port); +bool intel_bios_is_lspcon_present(struct drm_i915_private *dev_priv, + enum port port); + /* intel_opregion.c */ #ifdef CONFIG_ACPI diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index 624e755..501b57f 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -1715,3 +1715,47 @@ intel_bios_is_port_hpd_inverted(struct drm_i915_private *dev_priv, return false; } + +/** + * intel_bios_is_lspcon_present - if LSPCON is attached on %port + * @dev_priv: i915 device instance + * @port: port to check + * + * Return true if LSPCON is present on this port + */ +bool +intel_bios_is_lspcon_present(struct drm_i915_private *dev_priv, + enum port port) +{ + int i; + + if (WARN_ON_ONCE(!IS_GEN9(dev_priv))) + return false; + + for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { + if (!dev_priv->vbt.child_dev[i].common.lspcon) + continue; + + switch (dev_priv->vbt.child_dev[i].common.dvo_port) { + case DVO_PORT_DPA: + case DVO_PORT_HDMIA: + if (port == PORT_A) + return true; + break; + case DVO_PORT_DPB: + case DVO_PORT_HDMIB: + if (port == PORT_B) + return true; + break; + case DVO_PORT_DPC: + case DVO_PORT_HDMIC: + if (port == PORT_C) + return true; + break; + default: + break; + } + } + + return false; +}