From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6EBACC432C1 for ; Tue, 24 Sep 2019 16:42:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 40FFA21655 for ; Tue, 24 Sep 2019 16:42:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569343333; bh=6GqY/nqKTxCTGM2pwn0sZUAS7LmlMlK8LfSwH4hYi3k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=XBEThXK+gzX7wYg3GUSX1QoRz24T1GI9GmcI4ljAX11TA/yHu2dHaedgJJzs1llUB ed4MmmcObPEEx9QR/0J441KqEb2Qwd68EsTJnRsKkglISZ+EIEwNlBTBPacQhKRHae X5dxEK0ryrcgWz1PDKp/KWXc7oy42eW7Rano2Zg0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2394507AbfIXQmM (ORCPT ); Tue, 24 Sep 2019 12:42:12 -0400 Received: from mail.kernel.org ([198.145.29.99]:58216 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391573AbfIXQmD (ORCPT ); Tue, 24 Sep 2019 12:42:03 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8D5DE20872; Tue, 24 Sep 2019 16:42:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569343322; bh=6GqY/nqKTxCTGM2pwn0sZUAS7LmlMlK8LfSwH4hYi3k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fPcSCjgZmnkeUPqwJ++qmfI+CPzHYutPKKKEL0x0n0nUvXTtYkVHJsEqyMNBD7eWv S/lQfVI4Tl5yHOSb1UFLNrvumSa5LtmrQ29UmEHE98uvWWJ+unzAl73RoM50T7yjK/ 1kIeSbp1WFMnnwCW5sceFxalICBM+Z4am5CyFjhc= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Anthony Koo , Charlene Liu , Leo Li , Alex Deucher , Sasha Levin , amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 5.3 08/87] drm/amd/display: add monitor patch to add T7 delay Date: Tue, 24 Sep 2019 12:40:24 -0400 Message-Id: <20190924164144.25591-8-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190924164144.25591-1-sashal@kernel.org> References: <20190924164144.25591-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Anthony Koo [ Upstream commit 88eac241a1fc500ce5274a09ddc4bd5fc2b5adb6 ] [Why] Specifically to one panel, TCON is able to accept active video signal quickly, but the Source Driver requires 2-3 frames of extra time. It is a Panel issue since TCON needs to take care of all Sink requirements including Source Driver. But in this case it does not. Customer is asking to add fixed T7 delay as panel workaround. [How] Add monitor specific patch to add T7 delay Signed-off-by: Anthony Koo Reviewed-by: Charlene Liu Acked-by: Leo Li Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c | 4 ++++ drivers/gpu/drm/amd/display/dc/dc_types.h | 1 + 2 files changed, 5 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c index 2d019e1f61352..a9135764e5806 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c @@ -160,6 +160,10 @@ bool edp_receiver_ready_T7(struct dc_link *link) break; udelay(25); //MAx T7 is 50ms } while (++tries < 300); + + if (link->local_sink->edid_caps.panel_patch.extra_t7_ms > 0) + udelay(link->local_sink->edid_caps.panel_patch.extra_t7_ms * 1000); + return result; } diff --git a/drivers/gpu/drm/amd/display/dc/dc_types.h b/drivers/gpu/drm/amd/display/dc/dc_types.h index 6eabb6491a3df..ce6d73d21ccae 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_types.h +++ b/drivers/gpu/drm/amd/display/dc/dc_types.h @@ -202,6 +202,7 @@ struct dc_panel_patch { unsigned int dppowerup_delay; unsigned int extra_t12_ms; unsigned int extra_delay_backlight_off; + unsigned int extra_t7_ms; }; struct dc_edid_caps { -- 2.20.1