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=-4.1 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,UNPARSEABLE_RELAY, UNWANTED_LANGUAGE_BODY,URIBL_BLOCKED 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 DB798C004C9 for ; Tue, 7 May 2019 07:35:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B60BE20C01 for ; Tue, 7 May 2019 07:35:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726828AbfEGHfh (ORCPT ); Tue, 7 May 2019 03:35:37 -0400 Received: from mailgw02.mediatek.com ([1.203.163.81]:15356 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726276AbfEGHff (ORCPT ); Tue, 7 May 2019 03:35:35 -0400 X-UUID: 61e10e502b6a4bb7801dfbedde110a53-20190507 X-UUID: 61e10e502b6a4bb7801dfbedde110a53-20190507 Received: from mtkcas34.mediatek.inc [(172.27.4.253)] by mailgw02.mediatek.com (envelope-from ) (mailgw01.mediatek.com ESMTP with TLS) with ESMTP id 1757909939; Tue, 07 May 2019 15:35:30 +0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by MTKMBS33DR.mediatek.inc (172.27.6.106) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 7 May 2019 15:35:28 +0800 Received: from [172.21.77.4] (172.21.77.4) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Tue, 7 May 2019 15:35:28 +0800 Message-ID: <1557214528.3498.3.camel@mtksdaap41> Subject: Re: [v3 2/3] drm/mediatek: dpi dual edge support From: CK Hu To: Jitao Shi CC: Rob Herring , Pawel Moll , "Mark Rutland" , Ian Campbell , Kumar Gala , , David Airlie , "Matthias Brugger" , Thierry Reding , "Ajay Kumar" , Inki Dae , "Rahul Sharma" , Sean Paul , Vincent Palatin , Andy Yan , Philipp Zabel , "Russell King" , , , , , , , Sascha Hauer , , , , , Date: Tue, 7 May 2019 15:35:28 +0800 In-Reply-To: <20190416055242.75764-3-jitao.shi@mediatek.com> References: <20190416055242.75764-1-jitao.shi@mediatek.com> <20190416055242.75764-3-jitao.shi@mediatek.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.10.4-0ubuntu2 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-MTK: N Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Jitao: On Tue, 2019-04-16 at 13:52 +0800, Jitao Shi wrote: Where is the commit message? I think you could introduce what is dual edge (Maybe it's trivial for you, but not for me) Regards, CK > Signed-off-by: Jitao Shi > --- > drivers/gpu/drm/mediatek/mtk_dpi.c | 10 ++++++++++ > 1 file changed, 10 insertions(+) > > diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c > index 22e68a100e7b..66405159141a 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;