From patchwork Thu Jul 11 21:44:56 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rodrigo Vivi X-Patchwork-Id: 2826600 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 [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 917849F7D6 for ; Thu, 11 Jul 2013 21:46:40 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id ABDF820187 for ; Thu, 11 Jul 2013 21:46:39 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id CB48520182 for ; Thu, 11 Jul 2013 21:46:38 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id BD87CE668E for ; Thu, 11 Jul 2013 14:46:38 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mail-gg0-f177.google.com (mail-gg0-f177.google.com [209.85.161.177]) by gabe.freedesktop.org (Postfix) with ESMTP id CCEE5E6677 for ; Thu, 11 Jul 2013 14:45:22 -0700 (PDT) Received: by mail-gg0-f177.google.com with SMTP id i1so2859713ggn.8 for ; Thu, 11 Jul 2013 14:45:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; bh=3d93eBCikUg+wtM5XeGAUqiRJFq/Dnvn5qmY8cz1GhM=; b=t9TYAK/uxNfOcMQsW55skdIacFqk5VmWj+T7Ng1LFX+4l8anj12SNA2oiqtd11guOm 17EgOo+OD6guzReS1a4WoCn1dUCQ6Lv20uCzq2LAGvZvhQWdFuQfMsgBTAfSVTHxp5N0 eWXGEw5qwKMAYHINAUT1rbanZt4zGAdQb/pw39uhznqFZ/bMi8piRGxs1OG+UOQeIDPg VBflX4WMjenvRA0ko98RWVv5y7JIeYngzVc9WKWA/f2KNp0gzy2LzOtgtuDSgzJWNqLG Q+eoVFiO6suqqFr9Gp4Yckx49Jr5GxkAzuPlKY7hPwxARHDq2hBd8EKyexjvjD66me1I WGCQ== X-Received: by 10.236.148.165 with SMTP id v25mr22177949yhj.20.1373579122308; Thu, 11 Jul 2013 14:45:22 -0700 (PDT) Received: from localhost.localdomain ([186.204.164.107]) by mx.google.com with ESMTPSA id v68sm62992311yhn.22.2013.07.11.14.45.19 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Thu, 11 Jul 2013 14:45:21 -0700 (PDT) From: Rodrigo Vivi To: intel-gfx@lists.freedesktop.org Date: Thu, 11 Jul 2013 18:44:56 -0300 Message-Id: <1373579105-1732-3-git-send-email-rodrigo.vivi@gmail.com> X-Mailer: git-send-email 1.7.11.7 In-Reply-To: <1373579105-1732-1-git-send-email-rodrigo.vivi@gmail.com> References: <1373579105-1732-1-git-send-email-rodrigo.vivi@gmail.com> Subject: [Intel-gfx] [PATCH 02/11] drm/i915: Read the EDP DPCD and PSR Capability 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 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, T_DKIM_INVALID, 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 From: Shobhit Kumar v2: reuse of just created is_edp_psr and put it at right place. v3: move is_edp_psr above intel_edp_disable v4: remove parentheses. Noticed by Paulo. Reviewed-by: Paulo Zanoni Reviewed-by: Jani Nikula Signed-off-by: Shobhit Kumar Signed-off-by: Rodrigo Vivi --- drivers/gpu/drm/i915/intel_dp.c | 13 +++++++++++++ drivers/gpu/drm/i915/intel_drv.h | 1 + 2 files changed, 14 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 7db2cd7..bf0bfa1 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1369,6 +1369,12 @@ static void intel_dp_get_config(struct intel_encoder *encoder, } } +static bool is_edp_psr(struct intel_dp *intel_dp) +{ + return is_edp(intel_dp) && + intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED; +} + static void intel_disable_dp(struct intel_encoder *encoder) { struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); @@ -2282,6 +2288,13 @@ intel_dp_get_dpcd(struct intel_dp *intel_dp) if (intel_dp->dpcd[DP_DPCD_REV] == 0) return false; /* DPCD not present */ + /* Check if the panel supports PSR */ + memset(intel_dp->psr_dpcd, 0, sizeof(intel_dp->psr_dpcd)); + intel_dp_aux_native_read_retry(intel_dp, DP_PSR_SUPPORT, + intel_dp->psr_dpcd, + sizeof(intel_dp->psr_dpcd)); + if (is_edp_psr(intel_dp)) + DRM_DEBUG_KMS("Detected EDP PSR Panel.\n"); if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT)) return true; /* native DP sink */ diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 5dfc1a0..d25726d 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -487,6 +487,7 @@ struct intel_dp { uint8_t link_bw; uint8_t lane_count; uint8_t dpcd[DP_RECEIVER_CAP_SIZE]; + uint8_t psr_dpcd[EDP_PSR_RECEIVER_CAP_SIZE]; uint8_t downstream_ports[DP_MAX_DOWNSTREAM_PORTS]; struct i2c_adapter adapter; struct i2c_algo_dp_aux_data algo;