From mboxrd@z Thu Jan 1 00:00:00 1970 From: CK Hu Subject: Re: [PATCH] drm/mediatek: add mt8183 dpi support Date: Tue, 19 Feb 2019 10:36:35 +0800 Message-ID: <1550543795.4018.3.camel@mtksdaap41> References: <20190211045059.11821-1-jitao.shi@mediatek.com> <1550160809.6862.13.camel@mtksdaap41> <1550541190.13121.2.camel@mszsdaap41> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1550541190.13121.2.camel@mszsdaap41> Sender: linux-kernel-owner@vger.kernel.org To: Jitao Shi Cc: Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , linux-pwm@vger.kernel.org, David Airlie , Matthias Brugger , Thierry Reding , Ajay Kumar , Inki Dae , Rahul Sharma , Sean Paul , Vincent Palatin , Andy Yan , Philipp Zabel , Russell King , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-kernel List-Id: linux-mediatek@lists.infradead.org Hi, Jitao: On Tue, 2019-02-19 at 09:53 +0800, Jitao Shi wrote: > On Fri, 2019-02-15 at 00:13 +0800, CK Hu wrote: > > Hi, Jitao: > > > > On Mon, 2019-02-11 at 12:50 +0800, Jitao Shi wrote: > > > 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); > > > +} > > > > All these register exist in MT8173, if you do the same setting in > > MT8173, could it also sample on rising edge and falling edge? > > > > Regards, > > CK > > Hi CK, > > MT8173 has those registers. But the hw function is removed. > So MT8173 doesn't support DPI dual edge sample. OK, please add this information in commit message. Regards, CK > > Best Regards > Jitao > > > > > > + > > > 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, > > > + }, > > > { }, > > > }; > > > > > > > > > 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=-7.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,UNPARSEABLE_RELAY autolearn=unavailable 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 72DF6C43381 for ; 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bh=HzWeVlFa4jYK3oFn5qacQntiEp62rnFvhvNRfCooNxE=; b=W/W5boEaXU7GnQ R/n/3LgH8sIc7EPdO6zqJuTIDxGCfraCVlwMUjKBIhWVvaZfmq7GC9mCSJ1Jg4d2VH5H64XGWGVol 0jbREXt4WQ0kgQbQTwkL2dkfhU/tjTDPvk0W+2rjYI4ni1kLVizoWjBSGk6KtNZiJXq5jXQ/attYY 3uC/1i80q5tBnvoj6j2hS4m9fnzW6DhCgojYAOIWWYou44YUqo+FEOmd/SFj8M/LkM9xNd8COnDdn N8R+Yrak5SdMV5L1xjZgS6am73RyZOw18rIAdRJiuS9tiyoiaES/CaEDGIzWe4vBqZHgqHXyabI1Z 83oj4W7YMdeZO/eZGyEw==; 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 1gvvHF-0007gZ-HW; Tue, 19 Feb 2019 02:36:57 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gvvHB-0007g8-TT; Tue, 19 Feb 2019 02:36:55 +0000 X-UUID: 1080ae0293b54e0f9d3529bb5f7acd4f-20190218 X-UUID: 1080ae0293b54e0f9d3529bb5f7acd4f-20190218 Received: from mtkcas67.mediatek.inc [(172.29.193.45)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 1666428587; Mon, 18 Feb 2019 18:36:40 -0800 Received: from MTKMBS33DR.mediatek.inc (172.27.6.106) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 18 Feb 2019 18:36:39 -0800 Received: from mtkcas09.mediatek.inc (172.21.101.178) by MTKMBS33DR.mediatek.inc (172.27.6.106) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 19 Feb 2019 10:36:36 +0800 Received: from [172.21.77.4] (172.21.77.4) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Tue, 19 Feb 2019 10:36:35 +0800 Message-ID: <1550543795.4018.3.camel@mtksdaap41> Subject: Re: [PATCH] drm/mediatek: add mt8183 dpi support From: CK Hu To: Jitao Shi Date: Tue, 19 Feb 2019 10:36:35 +0800 In-Reply-To: <1550541190.13121.2.camel@mszsdaap41> References: <20190211045059.11821-1-jitao.shi@mediatek.com> <1550160809.6862.13.camel@mtksdaap41> <1550541190.13121.2.camel@mszsdaap41> X-Mailer: Evolution 3.10.4-0ubuntu2 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190218_183653_957097_502DDE20 X-CRM114-Status: GOOD ( 18.69 ) 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: Mark Rutland , devicetree@vger.kernel.org, David Airlie , stonea168@163.com, dri-devel@lists.freedesktop.org, yingjoe.chen@mediatek.com, Ajay Kumar , Vincent Palatin , cawa.cheng@mediatek.com, bibby.hsieh@mediatek.com, Russell King , Thierry Reding , linux-pwm@vger.kernel.org, Sascha Hauer , Pawel Moll , Ian Campbell , Inki Dae , Rob Herring , linux-mediatek@lists.infradead.org, Andy Yan , Matthias Brugger , eddie.huang@mediatek.com, linux-arm-kernel@lists.infradead.org, Rahul Sharma , srv_heupstream@mediatek.com, linux-kernel@vger.kernel.org, Philipp Zabel , Kumar Gala , Sean Paul Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, Jitao: On Tue, 2019-02-19 at 09:53 +0800, Jitao Shi wrote: > On Fri, 2019-02-15 at 00:13 +0800, CK Hu wrote: > > Hi, Jitao: > > > > On Mon, 2019-02-11 at 12:50 +0800, Jitao Shi wrote: > > > 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); > > > +} > > > > All these register exist in MT8173, if you do the same setting in > > MT8173, could it also sample on rising edge and falling edge? > > > > Regards, > > CK > > Hi CK, > > MT8173 has those registers. But the hw function is removed. > So MT8173 doesn't support DPI dual edge sample. OK, please add this information in commit message. Regards, CK > > Best Regards > Jitao > > > > > > + > > > 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, > > > + }, > > > { }, > > > }; > > > > > > > > > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel 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=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,UNPARSEABLE_RELAY 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 293DDC43381 for ; Tue, 19 Feb 2019 02:36:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E50AA2085A for ; Tue, 19 Feb 2019 02:36:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726654AbfBSCgp (ORCPT ); Mon, 18 Feb 2019 21:36:45 -0500 Received: from Mailgw01.mediatek.com ([1.203.163.78]:31735 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1725806AbfBSCgp (ORCPT ); Mon, 18 Feb 2019 21:36:45 -0500 X-UUID: 25d3497787af45f787b832bd70f3dca9-20190219 X-UUID: 25d3497787af45f787b832bd70f3dca9-20190219 Received: from mtkcas36.mediatek.inc [(172.27.4.250)] by mailgw01.mediatek.com (envelope-from ) (mailgw01.mediatek.com ESMTP with TLS) with ESMTP id 1134598264; Tue, 19 Feb 2019 10:36:38 +0800 Received: from mtkcas09.mediatek.inc (172.21.101.178) by MTKMBS33DR.mediatek.inc (172.27.6.106) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 19 Feb 2019 10:36:36 +0800 Received: from [172.21.77.4] (172.21.77.4) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Tue, 19 Feb 2019 10:36:35 +0800 Message-ID: <1550543795.4018.3.camel@mtksdaap41> Subject: Re: [PATCH] drm/mediatek: add mt8183 dpi 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, 19 Feb 2019 10:36:35 +0800 In-Reply-To: <1550541190.13121.2.camel@mszsdaap41> References: <20190211045059.11821-1-jitao.shi@mediatek.com> <1550160809.6862.13.camel@mtksdaap41> <1550541190.13121.2.camel@mszsdaap41> 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, 2019-02-19 at 09:53 +0800, Jitao Shi wrote: > On Fri, 2019-02-15 at 00:13 +0800, CK Hu wrote: > > Hi, Jitao: > > > > On Mon, 2019-02-11 at 12:50 +0800, Jitao Shi wrote: > > > 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); > > > +} > > > > All these register exist in MT8173, if you do the same setting in > > MT8173, could it also sample on rising edge and falling edge? > > > > Regards, > > CK > > Hi CK, > > MT8173 has those registers. But the hw function is removed. > So MT8173 doesn't support DPI dual edge sample. OK, please add this information in commit message. Regards, CK > > Best Regards > Jitao > > > > > > + > > > 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, > > > + }, > > > { }, > > > }; > > > > > > > > >