From patchwork Tue Mar 27 01:06:33 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Souza, Jose" X-Patchwork-Id: 10309037 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 5FE4D600CC for ; Tue, 27 Mar 2018 01:10:28 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5A302298C6 for ; Tue, 27 Mar 2018 01:10:28 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4EACC299AB; Tue, 27 Mar 2018 01:10:28 +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]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 0991E298C6 for ; Tue, 27 Mar 2018 01:10:28 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6E84589939; Tue, 27 Mar 2018 01:10:04 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by gabe.freedesktop.org (Postfix) with ESMTPS id 18B2A6E530; Tue, 27 Mar 2018 01:09:50 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Mar 2018 18:09:48 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.48,366,1517904000"; d="scan'208";a="211540321" Received: from josouza-mobl.jf.intel.com ([10.24.11.40]) by orsmga005.jf.intel.com with ESMTP; 26 Mar 2018 18:09:48 -0700 From: =?UTF-8?q?Jos=C3=A9=20Roberto=20de=20Souza?= To: intel-gfx@lists.freedesktop.org Subject: [PATCH v2 09/10] drm/i915/psr: Set DPCD PSR2 enable bit when needed Date: Mon, 26 Mar 2018 18:06:33 -0700 Message-Id: <20180327010634.15917-9-jose.souza@intel.com> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180327010634.15917-1-jose.souza@intel.com> References: <20180327010634.15917-1-jose.souza@intel.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?q?Jos=C3=A9=20Roberto=20de=20Souza?= , dri-devel@lists.freedesktop.org, Dhinakaran Pandiyan Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP In the 2 eDP1.4a pannels tested set or not set bit have no effect but is better set it and comply with specification. Signed-off-by: José Roberto de Souza Cc: Dhinakaran Pandiyan Reviewed-by: Rodrigo Vivi --- drivers/gpu/drm/i915/intel_psr.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c index d079cf0b034c..2d53f7398a6d 100644 --- a/drivers/gpu/drm/i915/intel_psr.c +++ b/drivers/gpu/drm/i915/intel_psr.c @@ -278,18 +278,19 @@ static void hsw_psr_enable_sink(struct intel_dp *intel_dp) struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); struct drm_device *dev = dig_port->base.base.dev; struct drm_i915_private *dev_priv = to_i915(dev); + u8 dpcd_val = DP_PSR_ENABLE; /* Enable ALPM at sink for psr2 */ if (dev_priv->psr.psr2_enabled && dev_priv->psr.alpm) drm_dp_dpcd_writeb(&intel_dp->aux, DP_RECEIVER_ALPM_CONFIG, DP_ALPM_ENABLE); + + if (dev_priv->psr.psr2_enabled) + dpcd_val |= DP_PSR_ENABLE_PSR2; if (dev_priv->psr.link_standby) - drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, - DP_PSR_ENABLE | DP_PSR_MAIN_LINK_ACTIVE); - else - drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, - DP_PSR_ENABLE); + dpcd_val |= DP_PSR_MAIN_LINK_ACTIVE; + drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, dpcd_val); drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, DP_SET_POWER_D0); }