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 9C410C43334 for ; Thu, 16 Jun 2022 10:51:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229748AbiFPKvl (ORCPT ); Thu, 16 Jun 2022 06:51:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38196 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1376529AbiFPKvk (ORCPT ); Thu, 16 Jun 2022 06:51:40 -0400 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2C4B85DE65; Thu, 16 Jun 2022 03:51:39 -0700 (PDT) X-UUID: 9b50985884a84c46adb1bdf62b903f58-20220616 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.6,REQID:d6659d84-6966-4c58-b866-1cd65f7fccde,OB:0,LO B:0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:45,FILE:0,RULE:Release_Ham,ACT ION:release,TS:45 X-CID-INFO: VERSION:1.1.6,REQID:d6659d84-6966-4c58-b866-1cd65f7fccde,OB:0,LOB: 0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:45,FILE:0,RULE:Release_Ham,ACTIO N:release,TS:45 X-CID-META: VersionHash:b14ad71,CLOUDID:4e537cf6-e099-41ba-a32c-13b8bfe63214,C OID:37c0074fa499,Recheck:0,SF:28|17|19|48,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,QS:nil,BEC:nil,COL:0 X-UUID: 9b50985884a84c46adb1bdf62b903f58-20220616 Received: from mtkcas11.mediatek.inc [(172.21.101.40)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 244618540; Thu, 16 Jun 2022 18:51:32 +0800 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.15; Thu, 16 Jun 2022 18:51:31 +0800 Received: from mtksdccf07 (172.21.84.99) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 16 Jun 2022 18:51:31 +0800 Message-ID: Subject: Re: [PATCH v11 12/12] drm/mediatek: dpi: Add matrix_sel helper From: Rex-BC Chen To: CK Hu , , , , , , , CC: , , , , , , , , , , Date: Thu, 16 Jun 2022 18:51:31 +0800 In-Reply-To: References: <20220613064841.10481-1-rex-bc.chen@mediatek.com> <20220613064841.10481-13-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: devicetree@vger.kernel.org On Tue, 2022-06-14 at 14:20 +0800, CK Hu wrote: > Hi, Bo-Chen: > > On Mon, 2022-06-13 at 14:48 +0800, Bo-Chen Chen wrote: > > From: Guillaume Ranquet > > > > Add a mtk_dpi_matrix_sel() helper to update the DPI_MATRIX_SET > > register depending on the color format. > > Why set DPI_MATRIX_SET? New feature or bug fix? What does this matrix > work for? > > Regards, > CK > Matrix selection is a new feature for both dpi and dpintf of MT8195. I will add this in next version. > > > > Signed-off-by: Guillaume Ranquet > > Signed-off-by: Bo-Chen Chen > > --- > > drivers/gpu/drm/mediatek/mtk_dpi.c | 21 +++++++++++++++++++++ > > drivers/gpu/drm/mediatek/mtk_dpi_regs.h | 3 +++ > > 2 files changed, 24 insertions(+) > > > > diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c > > b/drivers/gpu/drm/mediatek/mtk_dpi.c > > index 9668bd5dd14a..dc355a512963 100644 > > --- a/drivers/gpu/drm/mediatek/mtk_dpi.c > > +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c > > @@ -387,6 +387,25 @@ 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_matrix_sel(struct mtk_dpi *dpi, enum > > mtk_dpi_out_color_format format) > > +{ > > + u32 matrix_sel = 0; > > + > > + switch (format) { > > + case MTK_DPI_COLOR_FORMAT_YCBCR_422: > > + case MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL: > > + case MTK_DPI_COLOR_FORMAT_YCBCR_444: > > + case MTK_DPI_COLOR_FORMAT_YCBCR_444_FULL: > > + case MTK_DPI_COLOR_FORMAT_XV_YCC: > > + if (dpi->mode.hdisplay <= 720) > > + matrix_sel = 0x2; > > + break; > > + default: > > + break; > > + } > > + mtk_dpi_mask(dpi, DPI_MATRIX_SET, matrix_sel, > > INT_MATRIX_SEL_MASK); > > +} > > + > > static void mtk_dpi_config_color_format(struct mtk_dpi *dpi, > > enum mtk_dpi_out_color_format > > format) > > { > > @@ -394,6 +413,7 @@ 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_matrix_sel(dpi, format); > > 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); > > @@ -401,6 +421,7 @@ static void mtk_dpi_config_color_format(struct > > mtk_dpi *dpi, > > (format == MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL)) { > > mtk_dpi_config_yuv422_enable(dpi, true); > > mtk_dpi_config_csc_enable(dpi, true); > > + mtk_dpi_matrix_sel(dpi, format); > > if (dpi->conf->swap_input_support) > > mtk_dpi_config_swap_input(dpi, true); > > mtk_dpi_config_channel_swap(dpi, > > MTK_DPI_OUT_CHANNEL_SWAP_RGB); > > diff --git a/drivers/gpu/drm/mediatek/mtk_dpi_regs.h > > b/drivers/gpu/drm/mediatek/mtk_dpi_regs.h > > index f7f0272dbd6a..96c117202d0d 100644 > > --- a/drivers/gpu/drm/mediatek/mtk_dpi_regs.h > > +++ b/drivers/gpu/drm/mediatek/mtk_dpi_regs.h > > @@ -230,4 +230,7 @@ > > #define EDGE_SEL_EN BIT(5) > > #define H_FRE_2N BIT(25) > > > > +#define DPI_MATRIX_SET 0xB4 > > +#define INT_MATRIX_SEL_MASK (0x1F << 0) > > + > > #endif /* __MTK_DPI_REGS_H */ > >