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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E42AAC43334 for ; Thu, 16 Jun 2022 10:36:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232500AbiFPKgs (ORCPT ); Thu, 16 Jun 2022 06:36:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51266 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231492AbiFPKgq (ORCPT ); Thu, 16 Jun 2022 06:36:46 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 185375DA02; Thu, 16 Jun 2022 03:36:44 -0700 (PDT) X-UUID: f64867246d454b2ea8a3edf5c0c17e71-20220616 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.6,REQID:b5e36c6b-1f88-4956-9cce-bdbd5923cc85,OB:0,LO B:0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACTI ON:release,TS:0 X-CID-META: VersionHash:b14ad71,CLOUDID:0f47bf48-4c92-421c-ad91-b806c0f58b2a,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: f64867246d454b2ea8a3edf5c0c17e71-20220616 Received: from mtkmbs10n2.mediatek.inc [(172.21.101.183)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1702781592; Thu, 16 Jun 2022 18:36:38 +0800 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by mtkmbs11n2.mediatek.inc (172.21.101.187) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.3; Thu, 16 Jun 2022 18:36:37 +0800 Received: from mtksdccf07 (172.21.84.99) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.3 via Frontend Transport; Thu, 16 Jun 2022 18:36:37 +0800 Message-ID: <2200b1296a527340d1fa556e0f8ed929cff01c9c.camel@mediatek.com> Subject: Re: [PATCH v11 04/12] drm/mediatek: dpi: implement a swap_input toggle in SoC config From: Rex-BC Chen To: CK Hu , , , , , , , CC: , , , , , , , , , , Date: Thu, 16 Jun 2022 18:36:36 +0800 In-Reply-To: References: <20220613064841.10481-1-rex-bc.chen@mediatek.com> <20220613064841.10481-5-rex-bc.chen@mediatek.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.28.5-0ubuntu0.18.04.2 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2022-06-14 at 13:27 +0800, CK Hu wrote: > Hi, Bo-Chen: > > On Mon, 2022-06-13 at 14:48 +0800, Bo-Chen Chen wrote: > > From: Guillaume Ranquet > > > > The hardware design of dp_intf does not support input swap, so we > > add > > a bit of flexibility to support SoCs without swap_input support. > > > > Signed-off-by: Guillaume Ranquet > > [Bo-Chen: Add modification reason in commit message.] > > Signed-off-by: Bo-Chen Chen > > Reviewed-by: AngeloGioacchino Del Regno < > > angelogioacchino.delregno@collabora.com> > > Reviewed-by: Rex-BC Chen > > --- > > drivers/gpu/drm/mediatek/mtk_dpi.c | 14 +++++++++++--- > > 1 file changed, 11 insertions(+), 3 deletions(-) > > > > diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c > > b/drivers/gpu/drm/mediatek/mtk_dpi.c > > index 15218c1e8c11..c1438c744120 100644 > > --- a/drivers/gpu/drm/mediatek/mtk_dpi.c > > +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c > > @@ -126,6 +126,7 @@ struct mtk_dpi_conf { > > const u32 *output_fmts; > > u32 num_output_fmts; > > bool is_ck_de_pol; > > + bool swap_input_support; > > const struct mtk_dpi_yc_limit *limit; > > }; > > > > @@ -378,18 +379,21 @@ static void > > mtk_dpi_config_color_format(struct > > mtk_dpi *dpi, > > (format == MTK_DPI_COLOR_FORMAT_YCBCR_444_FULL)) { > > mtk_dpi_config_yuv422_enable(dpi, false); > > mtk_dpi_config_csc_enable(dpi, true); > > - mtk_dpi_config_swap_input(dpi, false); > > + if (dpi->conf->swap_input_support) > > + mtk_dpi_config_swap_input(dpi, false); > > mtk_dpi_config_channel_swap(dpi, > > MTK_DPI_OUT_CHANNEL_SWAP_BGR); > > } else if ((format == MTK_DPI_COLOR_FORMAT_YCBCR_422) || > > (format == MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL)) { > > mtk_dpi_config_yuv422_enable(dpi, true); > > mtk_dpi_config_csc_enable(dpi, true); > > - mtk_dpi_config_swap_input(dpi, true); > > + if (dpi->conf->swap_input_support) > > + mtk_dpi_config_swap_input(dpi, true); > > In this case, we need swap input, but hardware does not support, so > just skip config hardware and everything works fine? Should print any > error message? > > Regards, > CK > ok, I will add warning message for this. > > mtk_dpi_config_channel_swap(dpi, > > MTK_DPI_OUT_CHANNEL_SWAP_RGB); > > } else { > > mtk_dpi_config_yuv422_enable(dpi, false); > > mtk_dpi_config_csc_enable(dpi, false); > > - mtk_dpi_config_swap_input(dpi, false); > > + if (dpi->conf->swap_input_support) > > + mtk_dpi_config_swap_input(dpi, false); > > mtk_dpi_config_channel_swap(dpi, > > MTK_DPI_OUT_CHANNEL_SWAP_RGB); > > } > > } > > @@ -808,6 +812,7 @@ static const struct mtk_dpi_conf mt8173_conf = > > { > > .output_fmts = mt8173_output_fmts, > > .num_output_fmts = ARRAY_SIZE(mt8173_output_fmts), > > .is_ck_de_pol = true, > > + .swap_input_support = true, > > .limit = &mtk_dpi_limit, > > }; > > > > @@ -819,6 +824,7 @@ static const struct mtk_dpi_conf mt2701_conf = > > { > > .output_fmts = mt8173_output_fmts, > > .num_output_fmts = ARRAY_SIZE(mt8173_output_fmts), > > .is_ck_de_pol = true, > > + .swap_input_support = true, > > .limit = &mtk_dpi_limit, > > }; > > > > @@ -829,6 +835,7 @@ static const struct mtk_dpi_conf mt8183_conf = > > { > > .output_fmts = mt8183_output_fmts, > > .num_output_fmts = ARRAY_SIZE(mt8183_output_fmts), > > .is_ck_de_pol = true, > > + .swap_input_support = true, > > .limit = &mtk_dpi_limit, > > }; > > > > @@ -839,6 +846,7 @@ static const struct mtk_dpi_conf mt8192_conf = > > { > > .output_fmts = mt8183_output_fmts, > > .num_output_fmts = ARRAY_SIZE(mt8183_output_fmts), > > .is_ck_de_pol = true, > > + .swap_input_support = true, > > .limit = &mtk_dpi_limit, > > }; > > > >