From patchwork Thu Oct 7 23:01:25 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jesse Barnes X-Patchwork-Id: 239541 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id o97NdPDP013502 for ; Thu, 7 Oct 2010 23:39:45 GMT Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E7CBEA09BC for ; Thu, 7 Oct 2010 16:39:24 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from cpoproxy2-pub.bluehost.com (cpoproxy2-pub.bluehost.com [67.222.39.38]) by gabe.freedesktop.org (Postfix) with SMTP id C5AA39ECA9 for ; Thu, 7 Oct 2010 16:39:14 -0700 (PDT) Received: (qmail 10299 invoked by uid 0); 7 Oct 2010 23:39:14 -0000 Received: from unknown (HELO box514.bluehost.com) (74.220.219.114) by cpoproxy2.bluehost.com with SMTP; 7 Oct 2010 23:39:14 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=virtuousgeek.org; h=Received:From:To:Cc:Subject:Date:Message-Id:X-Mailer:In-Reply-To:References:X-Identified-User; b=tk3pcX1sSPUJklafw2XrsrDzQxorpSntzECaCaYmHiEw7NK9ZR8YBYFsHomWP0ZsR96i+OegB8pDntDNTElTQS9MrPiH22hmy1MsTAyXCvJNcetZl6u8ak+bLZRaJRFP; Received: from c-67-174-193-198.hsd1.ca.comcast.net ([67.174.193.198] helo=localhost.localdomain) by box514.bluehost.com with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.69) (envelope-from ) id 1P3zhA-0002wH-PX; Thu, 07 Oct 2010 17:16:16 -0600 From: Jesse Barnes To: intel-gfx@lists.freedesktop.org Date: Thu, 7 Oct 2010 16:01:25 -0700 Message-Id: <1286492485-18145-21-git-send-email-jbarnes@virtuousgeek.org> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1286492485-18145-1-git-send-email-jbarnes@virtuousgeek.org> References: <1286492485-18145-1-git-send-email-jbarnes@virtuousgeek.org> X-Identified-User: {10642:box514.bluehost.com:virtuous:virtuousgeek.org} {sentby:smtp auth 67.174.193.198 authed with jbarnes@virtuousgeek.org} Cc: stable@kernel.org Subject: [Intel-gfx] [PATCH 20/20] drm/i915: diasable clock gating for the panel power sequencer X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.11 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-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter1.kernel.org [140.211.167.41]); Thu, 07 Oct 2010 23:39:45 +0000 (UTC) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 5a22887..8829289 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -2784,6 +2784,9 @@ #define FDI_RX_PHASE_SYNC_POINTER_ENABLE (1) #define FDI_RX_CHICKEN(pipe) _PIPE(pipe, FDI_RXA_CHICKEN, FDI_RXB_CHICKEN) +#define SOUTH_DSPCLK_GATE_D 0xc2020 +#define PCH_DPLSUNIT_CLOCK_GATE_DISABLE (1<<29) + /* CPU: FDI_TX */ #define FDI_TXA_CTL 0x60100 #define FDI_TXB_CTL 0x61100 diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 09bc613..159dd01 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -5744,6 +5744,13 @@ void intel_init_clock_gating(struct drm_device *dev) I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate); /* + * On Ibex Peak and Cougar Point, we need to disable clock + * 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); + + /* * According to the spec the following bits should be set in * order to enable memory self-refresh * The bit 22/21 of 0x42004