From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753922Ab1HNQGx (ORCPT ); Sun, 14 Aug 2011 12:06:53 -0400 Received: from cantor2.suse.de ([195.135.220.15]:36393 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753902Ab1HNQGq (ORCPT ); Sun, 14 Aug 2011 12:06:46 -0400 X-Mailbox-Line: From gregkh@clark.kroah.org Fri Aug 12 14:05:54 2011 Message-Id: <20110812210553.960082932@clark.kroah.org> User-Agent: quilt/0.48-16.4 Date: Fri, 12 Aug 2011 14:04:06 -0700 From: Greg KH To: linux-kernel@vger.kernel.org, stable@kernel.org Cc: stable-review@kernel.org, torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Thomas Reim , Stephen Michaels , Dave Airlie Subject: [21/90] drm/radeon: Extended DDC Probing for ECS A740GM-M DVI-D Connector In-Reply-To: <20110812210626.GA4725@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.0-stable review patch. If anyone has any objections, please let us know. ------------------ From: Thomas Reim commit a81b31e9fc98e067b7e7f1244861c97e44268e2d upstream. ECS A740GM-M with ATI RADEON 2100 sends data to i2c bus for a DVI connector that is not implemented/existent on the board. Fix by applying extented DDC probing for this connector. Requires [PATCH] drm/radeon: Extended DDC Probing for Connectors with Improperly Wired DDC Lines Tested for kernel 2.6.38 on Asus ECS A740GM-M board BugLink: http://bugs.launchpad.net/bugs/810926 Signed-off-by: Thomas Reim Reviewed-by: Alex Deucher Acked-by: Stephen Michaels Signed-off-by: Dave Airlie Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/radeon/radeon_connectors.c | 9 +++++++++ 1 file changed, 9 insertions(+) --- a/drivers/gpu/drm/radeon/radeon_connectors.c +++ b/drivers/gpu/drm/radeon/radeon_connectors.c @@ -455,6 +455,15 @@ static bool radeon_connector_needs_exten (supported_device == ATOM_DEVICE_DFP2_SUPPORT)) return true; } + /* ECS A740GM-M with ATI RADEON 2100 sends data to i2c bus + * for a DVI connector that is not implemented */ + if ((dev->pdev->device == 0x796e) && + (dev->pdev->subsystem_vendor == 0x1019) && + (dev->pdev->subsystem_device == 0x2615)) { + if ((connector_type == DRM_MODE_CONNECTOR_DVID) && + (supported_device == ATOM_DEVICE_DFP2_SUPPORT)) + return true; + } /* Default: no EDID header probe required for DDC probing */ return false;