From patchwork Tue Jul 14 11:51:23 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: sonika.jindal@intel.com X-Patchwork-Id: 6786751 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 4A6E0C05AC for ; Tue, 14 Jul 2015 12:02:01 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 67A66206D4 for ; Tue, 14 Jul 2015 12:02:00 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 371E8206BA for ; Tue, 14 Jul 2015 12:01:59 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A4B3E6E9A8; Tue, 14 Jul 2015 05:01:58 -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 965AA6E9A8 for ; Tue, 14 Jul 2015 05:01:57 -0700 (PDT) Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga102.fm.intel.com with ESMTP; 14 Jul 2015 05:01:57 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,471,1432623600"; d="scan'208";a="728572525" Received: from sonikaji-desktop.iind.intel.com ([10.223.25.81]) by orsmga001.jf.intel.com with ESMTP; 14 Jul 2015 05:01:55 -0700 From: Sonika Jindal To: intel-gfx@lists.freedesktop.org Date: Tue, 14 Jul 2015 17:21:23 +0530 Message-Id: <1436874683-24090-4-git-send-email-sonika.jindal@intel.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1436874683-24090-1-git-send-email-sonika.jindal@intel.com> References: <1436874683-24090-1-git-send-email-sonika.jindal@intel.com> Subject: [Intel-gfx] [PATCH 3/3] drm/i915: Check live status before reading edid 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 Adding this for SKL onwards. v2: Adding checks for VLV/CHV as well. Reusing old ibx and g4x functions to check digital port status. Adding a separate function to get bxt live status (Daniel) Signed-off-by: Sonika Jindal --- drivers/gpu/drm/i915/intel_dp.c | 4 ++-- drivers/gpu/drm/i915/intel_drv.h | 2 ++ drivers/gpu/drm/i915/intel_hdmi.c | 43 +++++++++++++++++++++++++++++++++---- 3 files changed, 43 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 4ebfc3a..7b54b9d 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -4443,8 +4443,8 @@ ironlake_dp_detect(struct intel_dp *intel_dp) return intel_dp_detect_dpcd(intel_dp); } -static int g4x_digital_port_connected(struct drm_device *dev, - struct intel_digital_port *intel_dig_port) +int g4x_digital_port_connected(struct drm_device *dev, + struct intel_digital_port *intel_dig_port) { struct drm_i915_private *dev_priv = dev->dev_private; uint32_t bit; diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index a47fbc3..30c8dd6 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -1187,6 +1187,8 @@ void intel_edp_drrs_disable(struct intel_dp *intel_dp); void intel_edp_drrs_invalidate(struct drm_device *dev, unsigned frontbuffer_bits); void intel_edp_drrs_flush(struct drm_device *dev, unsigned frontbuffer_bits); +int g4x_digital_port_connected(struct drm_device *dev, + struct intel_digital_port *intel_dig_port); /* intel_dp_mst.c */ int intel_dp_mst_encoder_init(struct intel_digital_port *intel_dig_port, int conn_id); diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index c4b82ce..402be54 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -1300,6 +1300,40 @@ intel_hdmi_unset_edid(struct drm_connector *connector) to_intel_connector(connector)->detect_edid = NULL; } +static bool bxt_port_connected(struct drm_i915_private *dev_priv, + struct intel_digital_port *port) +{ + u32 temp = I915_READ(GEN8_DE_PORT_ISR); + + /* TODO: Add bxt A0/A1 wa related to hpd pin swap */ + switch (port->port) { + case PORT_B: + return temp & BXT_DE_PORT_HP_DDIB; + + case PORT_C: + return temp & BXT_DE_PORT_HP_DDIC; + + default: + return false; + + } +} + +static bool intel_hdmi_live_status(struct intel_digital_port *intel_dig_port) +{ + struct drm_device *dev = intel_dig_port->base.base.dev; + struct drm_i915_private *dev_priv = to_i915(dev); + + if (IS_VALLEYVIEW(dev)) + return g4x_digital_port_connected(dev, intel_dig_port); + else if (IS_SKYLAKE(dev)) + return ibx_digital_port_connected(dev_priv, intel_dig_port); + else if (IS_BROXTON(dev)) + return bxt_port_connected(dev_priv, intel_dig_port); + + return true; +} + static bool intel_hdmi_set_edid(struct drm_connector *connector) { @@ -1308,15 +1342,16 @@ intel_hdmi_set_edid(struct drm_connector *connector) struct intel_encoder *intel_encoder = &hdmi_to_dig_port(intel_hdmi)->base; enum intel_display_power_domain power_domain; - struct edid *edid; + struct edid *edid = NULL; bool connected = false; power_domain = intel_display_port_power_domain(intel_encoder); intel_display_power_get(dev_priv, power_domain); - edid = drm_get_edid(connector, - intel_gmbus_get_adapter(dev_priv, - intel_hdmi->ddc_bus)); + if (intel_hdmi_live_status(hdmi_to_dig_port(intel_hdmi))) + edid = drm_get_edid(connector, + intel_gmbus_get_adapter(dev_priv, + intel_hdmi->ddc_bus)); intel_display_power_put(dev_priv, power_domain);