From nobody Thu Nov 14 18:48:32 2024 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 0C288C433EF for ; Tue, 5 Jul 2022 10:25:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229954AbiGEKZx (ORCPT ); Tue, 5 Jul 2022 06:25:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49100 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231308AbiGEKZp (ORCPT ); Tue, 5 Jul 2022 06:25:45 -0400 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1E74AE6C; Tue, 5 Jul 2022 03:25:39 -0700 (PDT) X-UUID: 7188962c75d04bd6af6038151b670d1a-20220705 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.8,REQID:50bc81cf-2c11-48c2-8199-6e93489a7070,OB:0,LO B:0,IP:0,URL:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACT ION:release,TS:-5 X-CID-META: VersionHash:0f94e32,CLOUDID:bd3d9886-57f0-47ca-ba27-fe8c57fbf305,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: 7188962c75d04bd6af6038151b670d1a-20220705 Received: from mtkexhb01.mediatek.inc [(172.21.101.102)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1962218896; Tue, 05 Jul 2022 18:25:34 +0800 Received: from mtkmbs11n1.mediatek.inc (172.21.101.186) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.3; Tue, 5 Jul 2022 18:25:32 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.3 via Frontend Transport; Tue, 5 Jul 2022 18:25:32 +0800 From: Bo-Chen Chen To: , , , , , , CC: , , , , , , , , , , , , , , Bo-Chen Chen Subject: [PATCH v16 1/5] drm/mediatek: dpi: Add YUV422 output support Date: Tue, 5 Jul 2022 18:25:26 +0800 Message-ID: <20220705102530.1344-2-rex-bc.chen@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220705102530.1344-1-rex-bc.chen@mediatek.com> References: <20220705102530.1344-1-rex-bc.chen@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Dp_intf supports YUV422 as output format. In MT8195 Chrome project, YUV422 output format is used for 4K resolution. To support this, it is also needed to support color format transfer. Color format transfer is a new feature for both dpi and dpintf of MT8195. The input format could be RGB888 and output format for dp_intf should be YUV422. Therefore, we add a mtk_dpi_matrix_sel() helper to update the DPI_MATRIX_SET register depending on the color format. Signed-off-by: Guillaume Ranquet Signed-off-by: Bo-Chen Chen Reviewed-by: AngeloGioacchino Del Regno --- drivers/gpu/drm/mediatek/mtk_dpi.c | 34 +++++++++++++++++++------ drivers/gpu/drm/mediatek/mtk_dpi_regs.h | 6 +++++ 2 files changed, 32 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/= mtk_dpi.c index ea8d866e67bc..79060f272e4a 100644 --- a/drivers/gpu/drm/mediatek/mtk_dpi.c +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c @@ -54,7 +54,8 @@ enum mtk_dpi_out_channel_swap { }; =20 enum mtk_dpi_out_color_format { - MTK_DPI_COLOR_FORMAT_RGB + MTK_DPI_COLOR_FORMAT_RGB, + MTK_DPI_COLOR_FORMAT_YCBCR_422 }; =20 struct mtk_dpi { @@ -409,12 +410,26 @@ static void mtk_dpi_config_disable_edge(struct mtk_dp= i *dpi) static void mtk_dpi_config_color_format(struct mtk_dpi *dpi, enum mtk_dpi_out_color_format format) { - /* only support RGB888 */ - mtk_dpi_config_yuv422_enable(dpi, false); - mtk_dpi_config_csc_enable(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); + if (format =3D=3D MTK_DPI_COLOR_FORMAT_YCBCR_422) { + mtk_dpi_config_yuv422_enable(dpi, true); + mtk_dpi_config_csc_enable(dpi, true); + + /* + * If height is smaller than 720, we need to use RGB_TO_BT601 + * to transfer to yuv422. Otherwise, we use RGB_TO_JPEG. + */ + mtk_dpi_mask(dpi, DPI_MATRIX_SET, dpi->mode.hdisplay <=3D 720 ? + MATRIX_SEL_RGB_TO_BT601 : MATRIX_SEL_RGB_TO_JPEG, + INT_MATRIX_SEL_MASK); + + 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); + 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); + } } =20 static void mtk_dpi_dual_edge(struct mtk_dpi *dpi) @@ -648,7 +663,10 @@ static int mtk_dpi_bridge_atomic_check(struct drm_brid= ge *bridge, dpi->bit_num =3D MTK_DPI_OUT_BIT_NUM_8BITS; dpi->channel_swap =3D MTK_DPI_OUT_CHANNEL_SWAP_RGB; dpi->yc_map =3D MTK_DPI_OUT_YC_MAP_RGB; - dpi->color_format =3D MTK_DPI_COLOR_FORMAT_RGB; + if (out_bus_format =3D=3D MEDIA_BUS_FMT_YUYV8_1X16) + dpi->color_format =3D MTK_DPI_COLOR_FORMAT_YCBCR_422; + else + dpi->color_format =3D MTK_DPI_COLOR_FORMAT_RGB; =20 return 0; } diff --git a/drivers/gpu/drm/mediatek/mtk_dpi_regs.h b/drivers/gpu/drm/medi= atek/mtk_dpi_regs.h index 3a02fabe1662..9ce300313f3e 100644 --- a/drivers/gpu/drm/mediatek/mtk_dpi_regs.h +++ b/drivers/gpu/drm/mediatek/mtk_dpi_regs.h @@ -217,4 +217,10 @@ =20 #define EDGE_SEL_EN BIT(5) #define H_FRE_2N BIT(25) + +#define DPI_MATRIX_SET 0xB4 +#define INT_MATRIX_SEL_MASK GENMASK(4, 0) +#define MATRIX_SEL_RGB_TO_JPEG 0 +#define MATRIX_SEL_RGB_TO_BT601 2 + #endif /* __MTK_DPI_REGS_H */ --=20 2.18.0