From patchwork Mon Feb 11 04:50:59 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jitao Shi X-Patchwork-Id: 10805103 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 6BD3913A4 for ; Mon, 11 Feb 2019 04:51:31 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 58B8F29B51 for ; Mon, 11 Feb 2019 04:51:31 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4AE9229B59; Mon, 11 Feb 2019 04:51:31 +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,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id F296229B51 for ; Mon, 11 Feb 2019 04:51:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=isXWcsC8zbsI0jVYvscJkMlK8wi80lW4QZ9QHS9Hq/o=; b=SFH8/E2f9kWK5l 148oVO0HV4pqWeGVqovO/Ie8e/jNzkS3NG9kIjmjbNAPySOauucokHqnFqODizwvt/q2KUJ2xoEKg qMsQK9Jz/SnsTGBUCSzggNvkyIlGMR7PuxQJRFfRNNpmmYbx0rdNgSHeVRWdd3y71Xl5VRprivgPl S/2lSlSO87IGXRYwjKs0RJ/tdcyUEQW6VfUx0YkHKowelWrlXTEdzojubkvp6fqEO9X6aZkEbDDG6 w5pJPbktE/P4QH8sR4Z96vfUrctqHEvKlNZroOLTs2H3vG3BRRcNk2k5YAyvGTIE7HdcLm03D57uW 16fhHtCZ5rB7maGr74PA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gt3Z1-0005kt-VF; Mon, 11 Feb 2019 04:51:27 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gt3Yx-0005jg-No; Mon, 11 Feb 2019 04:51:25 +0000 X-UUID: 836ff5ead7dc4503ba4f0c10639d55fc-20190210 X-UUID: 836ff5ead7dc4503ba4f0c10639d55fc-20190210 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 1607686979; Sun, 10 Feb 2019 20:51:10 -0800 Received: from MTKMBS33DR.mediatek.inc (172.27.6.106) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Sun, 10 Feb 2019 20:51:08 -0800 Received: from MTKCAS32.mediatek.inc (172.27.4.184) by MTKMBS33DR.mediatek.inc (172.27.6.106) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 11 Feb 2019 12:51:05 +0800 Received: from mszsdaap41.mediatek.inc (10.16.6.141) by MTKCAS32.mediatek.inc (172.27.4.170) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Mon, 11 Feb 2019 12:51:03 +0800 From: Jitao Shi To: Rob Herring , Pawel Moll , "Mark Rutland" , Ian Campbell , Kumar Gala , , David Airlie , Matthias Brugger Subject: [PATCH] drm/mediatek: add mt8183 dpi support Date: Mon, 11 Feb 2019 12:50:59 +0800 Message-ID: <20190211045059.11821-1-jitao.shi@mediatek.com> X-Mailer: git-send-email 2.12.5 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190210_205123_786034_C70B1111 X-CRM114-Status: GOOD ( 10.44 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: 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, bibby.hsieh@mediatek.com, ck.hu@mediatek.com, Russell King , Thierry Reding , devicetree@vger.kernel.org, Jitao Shi , Philipp Zabel , Inki Dae , 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 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP MT8183 sample on rising and falling edge. It can reduce half data io. Signed-off-by: Jitao Shi --- drivers/gpu/drm/mediatek/mtk_dpi.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c index 62a9d47df948..610c23334047 100644 --- a/drivers/gpu/drm/mediatek/mtk_dpi.c +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c @@ -117,6 +117,7 @@ struct mtk_dpi_conf { unsigned int (*cal_factor)(int clock); u32 reg_h_fre_con; bool edge_sel_en; + bool dual_edge; }; static void mtk_dpi_mask(struct mtk_dpi *dpi, u32 offset, u32 val, u32 mask) @@ -353,6 +354,13 @@ static void mtk_dpi_config_disable_edge(struct mtk_dpi *dpi) mtk_dpi_mask(dpi, dpi->conf->reg_h_fre_con, 0, EDGE_SEL_EN); } +static void mtk_dpi_enable_dual_edge(struct mtk_dpi *dpi) +{ + mtk_dpi_mask(dpi, DPI_DDR_SETTING, DDR_EN | DDR_4PHASE, + DDR_EN | DDR_4PHASE); + mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, EDGE_SEL, EDGE_SEL); +} + static void mtk_dpi_config_color_format(struct mtk_dpi *dpi, enum mtk_dpi_out_color_format format) { @@ -509,6 +517,8 @@ static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi, mtk_dpi_config_color_format(dpi, dpi->color_format); mtk_dpi_config_2n_h_fre(dpi); mtk_dpi_config_disable_edge(dpi); + if (dpi->conf->dual_edge) + mtk_dpi_enable_dual_edge(dpi); mtk_dpi_sw_reset(dpi, false); return 0; @@ -671,6 +681,16 @@ 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, @@ -682,6 +702,12 @@ 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; @@ -777,6 +803,9 @@ static const struct of_device_id mtk_dpi_of_ids[] = { { .compatible = "mediatek,mt8173-dpi", .data = &mt8173_conf, }, + { .compatible = "mediatek,mt8183-dpi", + .data = &mt8183_conf, + }, { }, };