From patchwork Sat May 18 09:56:16 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jitao Shi X-Patchwork-Id: 10948901 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C89341390 for ; Sat, 18 May 2019 09:56:39 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B7CBE2849D for ; Sat, 18 May 2019 09:56:39 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AC22E2850F; Sat, 18 May 2019 09:56:39 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 6BAB82849D for ; Sat, 18 May 2019 09:56:39 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0E935897D4; Sat, 18 May 2019 09:56:35 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mailgw01.mediatek.com (unknown [1.203.163.78]) by gabe.freedesktop.org (Postfix) with ESMTP id 1BC91897E3 for ; Sat, 18 May 2019 09:56:31 +0000 (UTC) X-UUID: 701dff21825947f598315e9ef2de7a5d-20190518 X-UUID: 701dff21825947f598315e9ef2de7a5d-20190518 Received: from mtkcas32.mediatek.inc [(172.27.4.253)] by mailgw01.mediatek.com (envelope-from ) (mailgw01.mediatek.com ESMTP with TLS) with ESMTP id 2056482893; Sat, 18 May 2019 17:56:27 +0800 Received: from MTKCAS36.mediatek.inc (172.27.4.186) by MTKMBS33N2.mediatek.inc (172.27.4.76) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Sat, 18 May 2019 17:56:26 +0800 Received: from mszsdclx1018.gcn.mediatek.inc (172.27.4.253) by MTKCAS36.mediatek.inc (172.27.4.170) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Sat, 18 May 2019 17:56:24 +0800 From: Jitao Shi To: Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , , David Airlie , Matthias Brugger Subject: [v4 3/5] drm/mediatek: add mt8183 dpi dual edge support Date: Sat, 18 May 2019 17:56:16 +0800 Message-ID: <20190518095618.18454-4-jitao.shi@mediatek.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190518095618.18454-1-jitao.shi@mediatek.com> References: <20190518095618.18454-1-jitao.shi@mediatek.com> MIME-Version: 1.0 X-MTK: N X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: stonea168@163.com, dri-devel@lists.freedesktop.org, Andy Yan , Ajay Kumar , Vincent Palatin , cawa.cheng@mediatek.com, Russell King , Thierry Reding , devicetree@vger.kernel.org, Jitao Shi , linux-mediatek@lists.infradead.org, yingjoe.chen@mediatek.com, eddie.huang@mediatek.com, linux-arm-kernel@lists.infradead.org, Rahul Sharma , srv_heupstream@mediatek.com, linux-kernel@vger.kernel.org, Sascha Hauer , Sean Paul Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Add mt8183 dual edge support. DPI sample the data both rising and falling edge. It can reduce half data io pins. Signed-off-by: Jitao Shi --- drivers/gpu/drm/mediatek/mtk_dpi.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c index ccef3ac1c560..77e6e0f99188 100644 --- a/drivers/gpu/drm/mediatek/mtk_dpi.c +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c @@ -682,6 +682,16 @@ static unsigned int mt2701_calculate_factor(int clock) return 2; } +static unsigned int mt8183_calculate_factor(int clock) +{ + if (clock <= 27000) + return 8; + else if (clock <= 167000) + return 4; + else + return 2; +} + static const struct mtk_dpi_conf mt8173_conf = { .cal_factor = mt8173_calculate_factor, .reg_h_fre_con = 0xe0, @@ -693,6 +703,12 @@ static const struct mtk_dpi_conf mt2701_conf = { .edge_sel_en = true, }; +static const struct mtk_dpi_conf mt8183_conf = { + .cal_factor = mt8183_calculate_factor, + .reg_h_fre_con = 0xe0, + .dual_edge = true, +}; + static int mtk_dpi_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -788,6 +804,9 @@ static const struct of_device_id mtk_dpi_of_ids[] = { { .compatible = "mediatek,mt8173-dpi", .data = &mt8173_conf, }, + { .compatible = "mediatek,mt8183-dpi", + .data = &mt8183_conf, + }, { }, };