From patchwork Fri Dec 12 08:48:16 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: deepak.s@linux.intel.com X-Patchwork-Id: 5474751 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 [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 8CC29BEEA8 for ; Thu, 11 Dec 2014 08:51:31 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 857F3201B4 for ; Thu, 11 Dec 2014 08:51:30 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 536EA2018E for ; Thu, 11 Dec 2014 08:51:29 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B8F2E6E7E2; Thu, 11 Dec 2014 00:51:28 -0800 (PST) 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 A0C816E7E3 for ; Thu, 11 Dec 2014 00:51:27 -0800 (PST) Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga101.fm.intel.com with ESMTP; 11 Dec 2014 00:51:27 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.07,556,1413270000"; d="scan'208";a="636017113" Received: from deepu.iind.intel.com ([10.223.82.32]) by fmsmga001.fm.intel.com with ESMTP; 11 Dec 2014 00:51:25 -0800 From: deepak.s@linux.intel.com To: intel-gfx@lists.freedesktop.org Date: Fri, 12 Dec 2014 14:18:16 +0530 Message-Id: <1418374096-26561-4-git-send-email-deepak.s@linux.intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1418374096-26561-1-git-send-email-deepak.s@linux.intel.com> References: <1418374096-26561-1-git-send-email-deepak.s@linux.intel.com> Cc: daniel.vetter@ffwll.ch Subject: [Intel-gfx] [PATCH 4/4] drm/i915: Skip gunit save/restore for cherryview 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=-1.0 required=5.0 tests=BAYES_00, DATE_IN_FUTURE_12_24, RCVD_IN_DNSWL_MED,T_RP_MATCHES_RCVD,UNPARSEABLE_RELAY autolearn=no 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: Deepak S With cherryview onwards, Gunit hardware itself save and restore all the Gunit registers. Skipping the "vlv_save_gunit_s0ix_state" & "vlv_restore_gunit_s0ix_state" for cherryview in S3/S0ix sequence. Signed-off-by: Deepak S Reviewed-by: Ville Syrjälä --- drivers/gpu/drm/i915/i915_drv.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 6c09bf8..6257f66 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -1299,7 +1299,9 @@ static int vlv_suspend_complete(struct drm_i915_private *dev_priv) err = vlv_allow_gt_wake(dev_priv, false); if (err) goto err2; - vlv_save_gunit_s0ix_state(dev_priv); + + if (!IS_CHERRYVIEW(dev_priv->dev)) + vlv_save_gunit_s0ix_state(dev_priv); err = vlv_force_gfx_clock(dev_priv, false); if (err) @@ -1330,7 +1332,8 @@ static int vlv_resume_prepare(struct drm_i915_private *dev_priv, */ ret = vlv_force_gfx_clock(dev_priv, true); - vlv_restore_gunit_s0ix_state(dev_priv); + if (!IS_CHERRYVIEW(dev_priv->dev)) + vlv_restore_gunit_s0ix_state(dev_priv); err = vlv_allow_gt_wake(dev_priv, true); if (!ret)