From patchwork Thu Apr 5 22:29:08 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: oscar.mateo@intel.com X-Patchwork-Id: 10325553 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 C44D260467 for ; Thu, 5 Apr 2018 22:29:35 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A5D5B2940A for ; Thu, 5 Apr 2018 22:29:35 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9AB1E2940D; Thu, 5 Apr 2018 22:29:35 +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 5B4B92940A for ; Thu, 5 Apr 2018 22:29:35 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 611D06E925; Thu, 5 Apr 2018 22:29:33 +0000 (UTC) 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 ESMTPS id E8C4F6E8DD for ; Thu, 5 Apr 2018 22:29:20 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 05 Apr 2018 15:29:20 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.48,412,1517904000"; d="scan'208";a="31397589" Received: from omateolo-linux.sc.intel.com ([10.3.229.22]) by orsmga008.jf.intel.com with ESMTP; 05 Apr 2018 15:29:20 -0700 From: Oscar Mateo To: intel-gfx@lists.freedesktop.org Date: Thu, 5 Apr 2018 15:29:08 -0700 Message-Id: <1522967348-27293-14-git-send-email-oscar.mateo@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1522967348-27293-1-git-send-email-oscar.mateo@intel.com> References: <1522967348-27293-1-git-send-email-oscar.mateo@intel.com> Subject: [Intel-gfx] [PATCH 14/14] drm/i915/icl: Enable Sampler DFR X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Praveen Paneri MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP Sampler Dynamic Frequency Rebalancing (DFR) aims to reduce Sampler power by dynamically changing its clock frequency in low-throughput conditions. This patches enables it by default on Gen11. v2: Wrong operation to clear the bit (Praveen) Cc: Sagar Arun Kamble Cc: Praveen Paneri Cc: Mika Kuoppala Signed-off-by: Oscar Mateo --- drivers/gpu/drm/i915/i915_reg.h | 3 +++ drivers/gpu/drm/i915/intel_pm.c | 4 ++++ 2 files changed, 7 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 83c55e3..818d57e 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -8220,6 +8220,9 @@ enum { #define GAMW_ECO_DEV_RW_IA_REG _MMIO(0x4080) #define GAMW_ECO_DEV_CTX_RELOAD_DISABLE (1 << 7) +#define GEN10_DFR_RATIO_EN_AND_CHICKEN _MMIO(0x9550) +#define DFR_DISABLE (1 << 9) + #define TR_VA_TTL3_PTR_DW0 _MMIO(0x4DE0) #define TR_VA_TTL3_PTR_DW1 _MMIO(0x4DE4) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index c5bf71b..8f1d028 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -8505,6 +8505,10 @@ static void icl_init_clock_gating(struct drm_i915_private *dev_priv) I915_WRITE(_3D_CHICKEN3, _MASKED_BIT_ENABLE(_3D_CHICKEN3_AA_LINE_QUALITY_FIX_ENABLE)); + /* This is not an Wa. Enable to reduce Sampler power */ + I915_WRITE(GEN10_DFR_RATIO_EN_AND_CHICKEN, + (I915_READ(GEN10_DFR_RATIO_EN_AND_CHICKEN) & ~DFR_DISABLE)); + /* WaInPlaceDecompressionHang:icl */ I915_WRITE(GEN9_GAMT_ECO_REG_RW_IA, (I915_READ(GEN9_GAMT_ECO_REG_RW_IA) | GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS));