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 A2F8DC3F2CD for ; Tue, 3 Mar 2020 02:50:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6D268246EB for ; Tue, 3 Mar 2020 02:50:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583203841; bh=8dCuR1dZj5sYFg9M7hSWyym7Z6pdPopjdgIRORNr4Uo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=PyQm41isHzy8rGFeLrHPzMIPe4VIEF36ew0x/Y7eRvnMQih3UYBr5zW20qsvaYF9N 1aT5cNhulkl03se8NdDffSyEvg9mt78fUyV7Q8niP/hNZkfaaoBCXgcQ8pb5RAGMUL nGMjZDDpC62bWEAPDdr0KTmz0CRgBt/JGSV8obh8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728723AbgCCCuk (ORCPT ); Mon, 2 Mar 2020 21:50:40 -0500 Received: from mail.kernel.org ([198.145.29.99]:47366 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729173AbgCCCu3 (ORCPT ); Mon, 2 Mar 2020 21:50:29 -0500 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 D12D5246EB; Tue, 3 Mar 2020 02:50:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583203828; bh=8dCuR1dZj5sYFg9M7hSWyym7Z6pdPopjdgIRORNr4Uo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=X4kiy53xqYJ3p8dUS1iEgtmvIgn2G6ztC63KCH1AX17HRMT/qkAubtlSf8evE4gg+ IzYG2Pm9wCgtPGdJw6wc2LyBjf46Z4eiPUbmxYLEu33p7WR3VNUWdU0i6DnKWqKT69 /bFqbFz4+e9UzT+yB/B0UgkkIuPN/bV3ameG1dBY= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Harigovindan P , Rob Clark , Sasha Levin , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org Subject: [PATCH AUTOSEL 4.4 05/11] drm/msm/dsi: save pll state before dsi host is powered off Date: Mon, 2 Mar 2020 21:50:15 -0500 Message-Id: <20200303025021.10754-5-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200303025021.10754-1-sashal@kernel.org> References: <20200303025021.10754-1-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: Harigovindan P [ Upstream commit a1028dcfd0dd97884072288d0c8ed7f30399b528 ] Save pll state before dsi host is powered off. Without this change some register values gets resetted. Signed-off-by: Harigovindan P Signed-off-by: Rob Clark Signed-off-by: Sasha Levin --- drivers/gpu/drm/msm/dsi/dsi_manager.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c index 439dfb69e2ef8..34220df1265f5 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_manager.c +++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c @@ -434,6 +434,7 @@ static void dsi_mgr_bridge_post_disable(struct drm_bridge *bridge) struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1); struct mipi_dsi_host *host = msm_dsi->host; struct drm_panel *panel = msm_dsi->panel; + struct msm_dsi_pll *src_pll; bool is_dual_dsi = IS_DUAL_DSI(); int ret; @@ -467,6 +468,10 @@ static void dsi_mgr_bridge_post_disable(struct drm_bridge *bridge) id, ret); } + /* Save PLL status if it is a clock source */ + src_pll = msm_dsi_phy_get_pll(msm_dsi->phy); + msm_dsi_pll_save_state(src_pll); + ret = msm_dsi_host_power_off(host); if (ret) pr_err("%s: host %d power off failed,%d\n", __func__, id, ret); -- 2.20.1