From patchwork Wed May 4 09:14:32 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?TmFuY3kgTGluICjmnpfmrKPonqIp?= X-Patchwork-Id: 12837473 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 56E38C433F5 for ; Wed, 4 May 2022 09:18:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=7Qrgzf0uYBJjyT8SbGRZYcc81pCG2TUL4OoaqfS70q4=; b=MLYk4Fa2f4o4GD l0D9VPPvO+VOII44QgwSBcYjhx6beZSgtq1l6ZqbBtlHfRpT3WJker0YuakW5isjJTKcwLZVryl4h ZN8HVuavZ8QUj/mT6GRnJ5cXQzb2MncZJ0qSU7cv3eu+4X7auVMHkrqj+3NLxoA6DNMdxBgCqWYx7 HY7G5OB5B7EusqEQnvaKst/bClXK5II40pWO95h7oJr28ZRd9QYrCE6wV2rGH+wJhNenildqINSSG j0TFGlIfAH6wUeQuc06TO23KI/uUYcPqfhg+kG3N0eK5dDHDFMCI0xKBvZHXRSoWzGlXGIJ6NU3+n K+aTOhzb3k6/Pe1OFWYA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nmB7t-009kce-Fb; Wed, 04 May 2022 09:16:53 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nmB5z-009jO2-Uj; Wed, 04 May 2022 09:14:59 +0000 X-UUID: d6e0e7f9d6d54588989e63401e7c484a-20220504 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.4, REQID:69832e70-704b-468d-a263-25c9dfb59aa1, OB:0, LO B:0,IP:0,URL:8,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACTI ON:release,TS:8 X-CID-META: VersionHash:faefae9, CLOUDID:c368ac2f-6199-437e-8ab4-9920b4bc5b76, C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,File:nil,QS:0,BEC:nil X-UUID: d6e0e7f9d6d54588989e63401e7c484a-20220504 Received: from mtkcas68.mediatek.inc [(172.29.94.19)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1297337378; Wed, 04 May 2022 02:14:49 -0700 Received: from mtkmbs10n2.mediatek.inc (172.21.101.183) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 4 May 2022 02:14:47 -0700 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.3; Wed, 4 May 2022 17:14:45 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.3 via Frontend Transport; Wed, 4 May 2022 17:14:45 +0800 From: Nancy.Lin To: Rob Herring , Matthias Brugger , Chun-Kuang Hu , "Philipp Zabel" , , "AngeloGioacchino Del Regno" , CC: David Airlie , Daniel Vetter , "Nathan Chancellor" , Nick Desaulniers , "Nancy . Lin" , "jason-jh . lin" , Yongqiang Niu , , , , , , , , Subject: [PATCH v20 17/25] drm/mediatek: add display merge async reset control Date: Wed, 4 May 2022 17:14:32 +0800 Message-ID: <20220504091440.2052-18-nancy.lin@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220504091440.2052-1-nancy.lin@mediatek.com> References: <20220504091440.2052-1-nancy.lin@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220504_021456_053885_6F5FBECB X-CRM114-Status: GOOD ( 15.36 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add merge async reset control in mtk_merge_stop. Async hw doesn't do self reset on each sof signal(start of frame), so need to reset the async to clear the hw status for the next merge start. Signed-off-by: Nancy.Lin Reviewed-by: CK Hu Reviewed-by: AngeloGioacchino Del Regno --- drivers/gpu/drm/mediatek/mtk_disp_merge.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/gpu/drm/mediatek/mtk_disp_merge.c b/drivers/gpu/drm/mediatek/mtk_disp_merge.c index 2e13d2fb429e..6428b6203ffe 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_merge.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_merge.c @@ -8,6 +8,7 @@ #include #include #include +#include #include #include "mtk_drm_ddp_comp.h" @@ -67,6 +68,7 @@ struct mtk_disp_merge { struct cmdq_client_reg cmdq_reg; bool fifo_en; bool mute_support; + struct reset_control *reset_ctl; }; void mtk_merge_start(struct device *dev) @@ -101,6 +103,9 @@ void mtk_merge_stop_cmdq(struct device *dev, struct cmdq_pkt *cmdq_pkt) mtk_ddp_write(cmdq_pkt, 0, &priv->cmdq_reg, priv->regs, DISP_REG_MERGE_CTRL); + + if (priv->async_clk) + reset_control_reset(priv->reset_ctl); } static void mtk_merge_fifo_setting(struct mtk_disp_merge *priv, @@ -264,6 +269,12 @@ static int mtk_disp_merge_probe(struct platform_device *pdev) return PTR_ERR(priv->async_clk); } + if (priv->async_clk) { + priv->reset_ctl = devm_reset_control_get_optional_exclusive(dev, NULL); + if (IS_ERR(priv->reset_ctl)) + return PTR_ERR(priv->reset_ctl); + } + #if IS_REACHABLE(CONFIG_MTK_CMDQ) ret = cmdq_dev_get_client_reg(dev, &priv->cmdq_reg, 0); if (ret)