Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934096AbbFPJcA (ORCPT ); Tue, 16 Jun 2015 05:32:00 -0400 Received: from mail.kernel.org ([198.145.29.136]:54642 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756186AbbFPIlv (ORCPT ); Tue, 16 Jun 2015 04:41:51 -0400 From: lizf@kernel.org To: stable@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Alex Deucher , Zefan Li Subject: [PATCH 3.4 034/172] drm/radeon/dp: Set EDP_CONFIGURATION_SET for bridge chips if necessary Date: Tue, 16 Jun 2015 16:34:48 +0800 Message-Id: <1434443826-4929-34-git-send-email-lizf@kernel.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1434443587-4599-1-git-send-email-lizf@kernel.org> References: <1434443587-4599-1-git-send-email-lizf@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1662 Lines: 47 From: Alex Deucher 3.4.108-rc1 review patch. If anyone has any objections, please let me know. ------------------ commit 66c2b84ba6256bc5399eed45582af9ebb3ba2c15 upstream. Don't restrict it to just eDP panels. Some LVDS bridge chips require this. Fixes blank panels on resume on certain laptops. Noticed by mrnuke on IRC. bug: https://bugs.freedesktop.org/show_bug.cgi?id=42960 Signed-off-by: Alex Deucher [lizf: Backported to 3.4: adjust context] Signed-off-by: Zefan Li --- drivers/gpu/drm/radeon/atombios_dp.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c index 8d1724c..5325c20 100644 --- a/drivers/gpu/drm/radeon/atombios_dp.c +++ b/drivers/gpu/drm/radeon/atombios_dp.c @@ -777,10 +777,8 @@ static int radeon_dp_link_train_init(struct radeon_dp_link_train_info *dp_info) radeon_write_dpcd_reg(dp_info->radeon_connector, DP_DOWNSPREAD_CTRL, 0); - if ((dp_info->connector->connector_type == DRM_MODE_CONNECTOR_eDP) && - (dig->panel_mode == DP_PANEL_MODE_INTERNAL_DP2_MODE)) { + if (dig->panel_mode == DP_PANEL_MODE_INTERNAL_DP2_MODE) radeon_write_dpcd_reg(dp_info->radeon_connector, DP_EDP_CONFIGURATION_SET, 1); - } /* set the lane count on the sink */ tmp = dp_info->dp_lane_count; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/