From patchwork Mon Jun 20 12:10:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?UmV4LUJDIENoZW4gKOmZs+afj+i+sCk=?= X-Patchwork-Id: 12887474 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 A7CCEC43334 for ; Mon, 20 Jun 2022 12:10:57 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6D1D610FD02; Mon, 20 Jun 2022 12:10:47 +0000 (UTC) Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3BFF210FCF6 for ; Mon, 20 Jun 2022 12:10:40 +0000 (UTC) X-UUID: d44f934b6aad4f41916f83e0f5331db5-20220620 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.6, REQID:f39bda15-39a3-4443-bf15-79a654954df7, OB:0, LO B:0,IP:0,URL:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACT ION:release,TS:-5 X-CID-META: VersionHash:b14ad71, CLOUDID:5baf8b2d-1756-4fa3-be7f-474a6e4be921, C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:0,File:nil ,QS:nil,BEC:nil,COL:0 X-UUID: d44f934b6aad4f41916f83e0f5331db5-20220620 Received: from mtkmbs11n2.mediatek.inc [(172.21.101.187)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 54684070; Mon, 20 Jun 2022 20:10:32 +0800 Received: from mtkmbs11n1.mediatek.inc (172.21.101.186) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Mon, 20 Jun 2022 20:10:31 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.3 via Frontend Transport; Mon, 20 Jun 2022 20:10:31 +0800 From: Bo-Chen Chen To: , , , , , , Subject: [PATCH v12 11/14] drm/mediatek: dpi: Add tvd_clk enable/disable flow Date: Mon, 20 Jun 2022 20:10:25 +0800 Message-ID: <20220620121028.29234-12-rex-bc.chen@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220620121028.29234-1-rex-bc.chen@mediatek.com> References: <20220620121028.29234-1-rex-bc.chen@mediatek.com> MIME-Version: 1.0 X-MTK: N X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, granquet@baylibre.com, jitao.shi@mediatek.com, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, msp@baylibre.com, Project_Global_Chrome_Upstream_Group@mediatek.com, Bo-Chen Chen , linux-mediatek@lists.infradead.org, wenst@chromium.org, linux-arm-kernel@lists.infradead.org, angelogioacchino.delregno@collabora.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" We should enable/disable tvd_clk when power_on/power_off, so add this patch to do this. Signed-off-by: Bo-Chen Chen --- drivers/gpu/drm/mediatek/mtk_dpi.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c index 2717b1741b7a..f83ecb154457 100644 --- a/drivers/gpu/drm/mediatek/mtk_dpi.c +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c @@ -455,6 +455,7 @@ static void mtk_dpi_power_off(struct mtk_dpi *dpi) mtk_dpi_disable(dpi); clk_disable_unprepare(dpi->pixel_clk); clk_disable_unprepare(dpi->engine_clk); + clk_disable_unprepare(dpi->tvd_clk); } static int mtk_dpi_power_on(struct mtk_dpi *dpi) @@ -464,10 +465,16 @@ static int mtk_dpi_power_on(struct mtk_dpi *dpi) if (++dpi->refcount != 1) return 0; + ret = clk_prepare_enable(dpi->tvd_clk); + if (ret) { + dev_err(dpi->dev, "Failed to enable tvd pll: %d\n", ret); + goto err_refcount; + } + ret = clk_prepare_enable(dpi->engine_clk); if (ret) { dev_err(dpi->dev, "Failed to enable engine clock: %d\n", ret); - goto err_refcount; + goto err_engine; } ret = clk_prepare_enable(dpi->pixel_clk); @@ -484,6 +491,8 @@ static int mtk_dpi_power_on(struct mtk_dpi *dpi) err_pixel: clk_disable_unprepare(dpi->engine_clk); +err_engine: + clk_disable_unprepare(dpi->tvd_clk); err_refcount: dpi->refcount--; return ret;