From patchwork Tue Oct 1 20:18:08 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jesse Barnes X-Patchwork-Id: 2972111 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 5FF7B9F245 for ; Tue, 1 Oct 2013 20:32:27 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 7BF59203DF for ; Tue, 1 Oct 2013 20:32:26 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id AC0AB2037F for ; Tue, 1 Oct 2013 20:32:25 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B22D743703 for ; Tue, 1 Oct 2013 13:32:25 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from fproxy7-pub.mail.unifiedlayer.com (fproxy7-pub.mail.unifiedlayer.com [69.89.22.21]) by gabe.freedesktop.org (Postfix) with SMTP id 65CA3E5D1B for ; Tue, 1 Oct 2013 13:32:11 -0700 (PDT) Received: (qmail 28716 invoked by uid 0); 1 Oct 2013 20:32:10 -0000 Received: from unknown (HELO box514.bluehost.com) (74.220.219.114) by fproxy7.mail.unifiedlayer.com with SMTP; 1 Oct 2013 20:32:10 -0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=virtuousgeek.org; s=default; h=Message-Id:Date:Subject:To:From; bh=kBQIS6Zs22GcK6uj0R6P4/TDifI7fDQ7PRNcEhApxLI=; b=phON+mJA/6csaXQHmAiAYpbzjAWv+0ox5iEv0FP4U+bAZZViM9bovveP4TUcnkafCqA83MGVFCU0VL4baDkN+xr86DGFTwzrzdpBft8l/BN2u/EIl8sHbaEvkaFzt6F+; Received: from [70.102.97.201] (port=58971 helo=jbarnes-t420.elevenwireless.com) by box514.bluehost.com with esmtpsa (TLSv1:CAMELLIA256-SHA:256) (Exim 4.80) (envelope-from ) id 1VR6OX-0000EP-Ey for intel-gfx@lists.freedesktop.org; Tue, 01 Oct 2013 14:18:09 -0600 From: Jesse Barnes To: intel-gfx@lists.freedesktop.org Date: Tue, 1 Oct 2013 13:18:08 -0700 Message-Id: <1380658688-16813-1-git-send-email-jbarnes@virtuousgeek.org> X-Mailer: git-send-email 1.7.9.5 X-Identified-User: {10642:box514.bluehost.com:virtuous:virtuousgeek.org} {sentby:smtp auth 70.102.97.201 authed with jbarnes@virtuousgeek.org} Subject: [Intel-gfx] [PATCH] drm/i915: disable LVDS clock gating on CPT 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=-4.7 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED,RP_MATCHES_RCVD,T_DKIM_INVALID,UNPARSEABLE_RELAY autolearn=ham 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 Needed to prevent display corruption in high res panels. Signed-off-by: Jesse Barnes Reviewed-by: Rodrigo Vivi --- drivers/gpu/drm/i915/i915_reg.h | 2 ++ drivers/gpu/drm/i915/intel_pm.c | 4 +++- 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 96fd2ce..cca670a 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -4338,7 +4338,9 @@ #define FDI_RX_CHICKEN(pipe) _PIPE(pipe, _FDI_RXA_CHICKEN, _FDI_RXB_CHICKEN) #define SOUTH_DSPCLK_GATE_D 0xc2020 +#define PCH_LVDSUNIT_CLOCK_GATE_DISABLE (1<<30) #define PCH_DPLSUNIT_CLOCK_GATE_DISABLE (1<<29) +#define PCH_LVDSUNIT2_CLOCK_GATE_DISABLE (1<<14) #define PCH_LP_PARTITION_LEVEL_DISABLE (1<<12) /* CPU: FDI_TX */ diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 698257c..f6765e0 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -4791,7 +4791,9 @@ static void cpt_init_clock_gating(struct drm_device *dev) * gating for the panel power sequencer or it will fail to * start up when no ports are active. */ - I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE); + I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE | + PCH_LVDSUNIT_CLOCK_GATE_DISABLE | + PCH_LVDSUNIT2_CLOCK_GATE_DISABLE); I915_WRITE(SOUTH_CHICKEN2, I915_READ(SOUTH_CHICKEN2) | DPLS_EDP_PPS_FIX_DIS); /* The below fixes the weird display corruption, a few pixels shifted