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,USER_AGENT_GIT autolearn=ham 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 E64F6C3A5A2 for ; Sun, 22 Sep 2019 18:59:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B6BFC21479 for ; Sun, 22 Sep 2019 18:59:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569178775; bh=PqaDUTFMjQNqk7CmNI64SIfAI3JLDCto4G4ERhjXbu0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=tlygi4u4W4e8PsklzA5/zMgwYeBGM8AGqUQnKk+Q7QDNbaVVAWxO2/9KW3eMjXVYx 6TYdoDou7hM9AUWuKujPI6rUO/5YfJyp3WFrMHfSSE5R7K9anhC0FcRJWC/sR+l73F wy9qDrh9xsTp2tQxBs6fm74AUBmQB1OmiJUeM+/w= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2408273AbfIVS7e (ORCPT ); Sun, 22 Sep 2019 14:59:34 -0400 Received: from mail.kernel.org ([198.145.29.99]:34646 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2438823AbfIVS72 (ORCPT ); Sun, 22 Sep 2019 14:59:28 -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 7E4C32186A; Sun, 22 Sep 2019 18:59:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569178767; bh=PqaDUTFMjQNqk7CmNI64SIfAI3JLDCto4G4ERhjXbu0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Z047smC9rXcSNH0thPEohe4+mbc9PQDZ2Isvl5FE/jkVHCdNOXmJY1lnywy+83s8Q 8d5Ad7lXpWqN7Xo26+KjIvn4W2StoIya6fAzrPASiPSkjvSt7XP8dJ4BEjJSFqk8Y/ sObTliZNTOcZZMS4jPDrfxul0qiF8fYLe1yIw7XM= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Ahzo , Evan Quan , Alex Deucher , Sasha Levin , amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 4.14 86/89] drm/amd/powerplay/smu7: enforce minimal VBITimeout (v2) Date: Sun, 22 Sep 2019 14:57:14 -0400 Message-Id: <20190922185717.3412-86-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190922185717.3412-1-sashal@kernel.org> References: <20190922185717.3412-1-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: Ahzo [ Upstream commit f659bb6dae58c113805f92822e4c16ddd3156b79 ] This fixes screen corruption/flickering on 75 Hz displays. v2: make print statement debug only (Alex) Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102646 Reviewed-by: Evan Quan Signed-off-by: Ahzo Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c index 336fdd8c7db08..61141bc3edfe9 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c @@ -3972,6 +3972,11 @@ static int smu7_program_display_gap(struct pp_hwmgr *hwmgr) data->frame_time_x2 = frame_time_in_us * 2 / 100; + if (data->frame_time_x2 < 280) { + pr_debug("%s: enforce minimal VBITimeout: %d -> 280\n", __func__, data->frame_time_x2); + data->frame_time_x2 = 280; + } + display_gap2 = pre_vbi_time_in_us * (ref_clock / 100); cgs_write_ind_register(hwmgr->device, CGS_IND_REG__SMC, ixCG_DISPLAY_GAP_CNTL2, display_gap2); -- 2.20.1