From patchwork Mon Dec 1 16:01:05 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Mika Kuoppala X-Patchwork-Id: 5413341 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 5CF649F39D for ; Mon, 1 Dec 2014 15:57:30 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 2933F20270 for ; Mon, 1 Dec 2014 15:57:29 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 0EB522014A for ; Mon, 1 Dec 2014 15:57:28 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6DA546E554; Mon, 1 Dec 2014 07:57:27 -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 584916E554 for ; Mon, 1 Dec 2014 07:57:26 -0800 (PST) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga101.fm.intel.com with ESMTP; 01 Dec 2014 07:57:25 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.07,494,1413270000"; d="scan'208";a="640771880" Received: from rosetta.fi.intel.com (HELO rosetta) ([10.237.72.102]) by fmsmga002.fm.intel.com with ESMTP; 01 Dec 2014 07:57:22 -0800 Received: by rosetta (Postfix, from userid 1000) id 5C06480052; Mon, 1 Dec 2014 18:01:09 +0200 (EET) From: Mika Kuoppala To: intel-gfx@lists.freedesktop.org Date: Mon, 1 Dec 2014 18:01:05 +0200 Message-Id: <1417449665-6691-1-git-send-email-mika.kuoppala@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <20141128162205.GN10194@nuc-i3427.alporthouse.com> References: <20141128162205.GN10194@nuc-i3427.alporthouse.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH] drm/i915: Convert pxvid to extvid lookup table to a function 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: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_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 From: Mika Kuoppala The conversion table can be replaced with simple enough function. text data bss dec hex filename 839688 10987 24 850699 cfb0b drivers/gpu/drm/i915/i915.ko 839224 10987 24 850235 cf93b drivers/gpu/drm/i915/i915.ko Result is 494 saved bytes (.05525%). v2: - no run on sentences from subject (Chris, Jani) - be verbose about the savings (Chris, Daniel) Reviewed-by: Ville Syrjälä (v1) Signed-off-by: Mika Kuoppala Tested-By: PRC QA PRTS (Patch Regression Test System Contact: shuang.he@intel.com) --- drivers/gpu/drm/i915/intel_pm.c | 155 +++++----------------------------------- 1 file changed, 18 insertions(+), 137 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 9af0af4..78911e2 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -5681,146 +5681,27 @@ unsigned long i915_mch_val(struct drm_i915_private *dev_priv) return ((m * x) / 127) - b; } -static u16 pvid_to_extvid(struct drm_i915_private *dev_priv, u8 pxvid) +static int _pxvid_to_vd(u8 pxvid) +{ + if (pxvid == 0) + return 0; + + if (pxvid >= 8 && pxvid < 31) + pxvid = 31; + + return (pxvid + 2) * 125; +} + +static u32 pvid_to_extvid(struct drm_i915_private *dev_priv, u8 pxvid) { struct drm_device *dev = dev_priv->dev; - static const struct v_table { - u16 vd; /* in .1 mil */ - u16 vm; /* in .1 mil */ - } v_table[] = { - { 0, 0, }, - { 375, 0, }, - { 500, 0, }, - { 625, 0, }, - { 750, 0, }, - { 875, 0, }, - { 1000, 0, }, - { 1125, 0, }, - { 4125, 3000, }, - { 4125, 3000, }, - { 4125, 3000, }, - { 4125, 3000, }, - { 4125, 3000, }, - { 4125, 3000, }, - { 4125, 3000, }, - { 4125, 3000, }, - { 4125, 3000, }, - { 4125, 3000, }, - { 4125, 3000, }, - { 4125, 3000, }, - { 4125, 3000, }, - { 4125, 3000, }, - { 4125, 3000, }, - { 4125, 3000, }, - { 4125, 3000, }, - { 4125, 3000, }, - { 4125, 3000, }, - { 4125, 3000, }, - { 4125, 3000, }, - { 4125, 3000, }, - { 4125, 3000, }, - { 4125, 3000, }, - { 4250, 3125, }, - { 4375, 3250, }, - { 4500, 3375, }, - { 4625, 3500, }, - { 4750, 3625, }, - { 4875, 3750, }, - { 5000, 3875, }, - { 5125, 4000, }, - { 5250, 4125, }, - { 5375, 4250, }, - { 5500, 4375, }, - { 5625, 4500, }, - { 5750, 4625, }, - { 5875, 4750, }, - { 6000, 4875, }, - { 6125, 5000, }, - { 6250, 5125, }, - { 6375, 5250, }, - { 6500, 5375, }, - { 6625, 5500, }, - { 6750, 5625, }, - { 6875, 5750, }, - { 7000, 5875, }, - { 7125, 6000, }, - { 7250, 6125, }, - { 7375, 6250, }, - { 7500, 6375, }, - { 7625, 6500, }, - { 7750, 6625, }, - { 7875, 6750, }, - { 8000, 6875, }, - { 8125, 7000, }, - { 8250, 7125, }, - { 8375, 7250, }, - { 8500, 7375, }, - { 8625, 7500, }, - { 8750, 7625, }, - { 8875, 7750, }, - { 9000, 7875, }, - { 9125, 8000, }, - { 9250, 8125, }, - { 9375, 8250, }, - { 9500, 8375, }, - { 9625, 8500, }, - { 9750, 8625, }, - { 9875, 8750, }, - { 10000, 8875, }, - { 10125, 9000, }, - { 10250, 9125, }, - { 10375, 9250, }, - { 10500, 9375, }, - { 10625, 9500, }, - { 10750, 9625, }, - { 10875, 9750, }, - { 11000, 9875, }, - { 11125, 10000, }, - { 11250, 10125, }, - { 11375, 10250, }, - { 11500, 10375, }, - { 11625, 10500, }, - { 11750, 10625, }, - { 11875, 10750, }, - { 12000, 10875, }, - { 12125, 11000, }, - { 12250, 11125, }, - { 12375, 11250, }, - { 12500, 11375, }, - { 12625, 11500, }, - { 12750, 11625, }, - { 12875, 11750, }, - { 13000, 11875, }, - { 13125, 12000, }, - { 13250, 12125, }, - { 13375, 12250, }, - { 13500, 12375, }, - { 13625, 12500, }, - { 13750, 12625, }, - { 13875, 12750, }, - { 14000, 12875, }, - { 14125, 13000, }, - { 14250, 13125, }, - { 14375, 13250, }, - { 14500, 13375, }, - { 14625, 13500, }, - { 14750, 13625, }, - { 14875, 13750, }, - { 15000, 13875, }, - { 15125, 14000, }, - { 15250, 14125, }, - { 15375, 14250, }, - { 15500, 14375, }, - { 15625, 14500, }, - { 15750, 14625, }, - { 15875, 14750, }, - { 16000, 14875, }, - { 16125, 15000, }, - }; + const int vd = _pxvid_to_vd(pxvid); + const int vm = vd - 1125; + if (INTEL_INFO(dev)->is_mobile) - return v_table[pxvid].vm; - else - return v_table[pxvid].vd; + return vm > 0 ? vm : 0; + + return vd; } static void __i915_update_gfx_val(struct drm_i915_private *dev_priv)