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b=Czm/63O8MCBhMwYwEUxufhX1su8pk6FcsCW4dncuqjwDUAeV8I9IZEpDvQFQZlaCQFnKSHi2Vxnfo4Zsb6SiOwHMTCI+LdclZz2+r/YmS3npvh2gwKHSAgg7oDk9s/fsqmE1rmLc0frx9ERz6inoWbVkswRIzl38AUqQhurXIhI= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from AM7PR04MB7046.eurprd04.prod.outlook.com (2603:10a6:20b:113::22) by AM8PR04MB7859.eurprd04.prod.outlook.com (2603:10a6:20b:24c::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6455.22; Wed, 31 May 2023 09:27:22 +0000 Received: from AM7PR04MB7046.eurprd04.prod.outlook.com ([fe80::f3d5:528:d12d:50d0]) by AM7PR04MB7046.eurprd04.prod.outlook.com ([fe80::f3d5:528:d12d:50d0%4]) with mapi id 15.20.6455.020; Wed, 31 May 2023 09:27:22 +0000 From: Liu Ying To: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: andrzej.hajda@intel.com, neil.armstrong@linaro.org, rfoss@kernel.org, Laurent.pinchart@ideasonboard.com, jonas@kwiboo.se, jernej.skrabec@gmail.com, airlied@gmail.com, daniel@ffwll.ch, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com Subject: [PATCH v2 1/2] dt-bindings: display: bridge: Add NXP i.MX93 parallel display format configuration Date: Wed, 31 May 2023 17:32:05 +0800 Message-Id: <20230531093206.3893469-2-victor.liu@nxp.com> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20230531093206.3893469-1-victor.liu@nxp.com> References: <20230531093206.3893469-1-victor.liu@nxp.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: SG2PR02CA0118.apcprd02.prod.outlook.com (2603:1096:4:92::34) To AM7PR04MB7046.eurprd04.prod.outlook.com (2603:10a6:20b:113::22) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AM7PR04MB7046:EE_|AM8PR04MB7859:EE_ X-MS-Office365-Filtering-Correlation-Id: dbabed12-c7b1-4fb5-a6f7-08db61b93d16 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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charset="utf-8" NXP i.MX93 mediamix blk-ctrl contains one DISPLAY_MUX register which configures parallel display format by using the "PARALLEL_DISP_FORMAT" field. Add device tree bindings for the display format configuration. Signed-off-by: Liu Ying --- v1->v2: * No change. .../display/bridge/nxp,imx93-pdfc.yaml | 78 +++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/bridge/nxp,im= x93-pdfc.yaml diff --git a/Documentation/devicetree/bindings/display/bridge/nxp,imx93-pdf= c.yaml b/Documentation/devicetree/bindings/display/bridge/nxp,imx93-pdfc.ya= ml new file mode 100644 index 000000000000..a84bfb46b01d --- /dev/null +++ b/Documentation/devicetree/bindings/display/bridge/nxp,imx93-pdfc.yaml @@ -0,0 +1,78 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/bridge/nxp,imx93-pdfc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NXP i.MX93 Parallel Display Format Configuration + +maintainers: + - Liu Ying + +description: | + The i.MX93 mediamix blk-ctrl contains one DISPLAY_MUX register which + configures parallel display format by using the "PARALLEL_DISP_FORMAT" + field. + +properties: + compatible: + const: nxp,imx93-pdfc + + reg: + maxItems: 1 + + ports: + $ref: /schemas/graph.yaml#/properties/ports + + properties: + port@0: + $ref: /schemas/graph.yaml#/properties/port + description: Input port node to receive pixel data. + + port@1: + $ref: /schemas/graph.yaml#/properties/port + description: Output port node to downstream pixel data receivers. + + required: + - port@0 + - port@1 + +required: + - compatible + - ports + +additionalProperties: false + +examples: + - | + + blk-ctrl { + #address-cells =3D <1>; + #size-cells =3D <1>; + + bridge@60 { + compatible =3D "nxp,imx93-pdfc"; + reg =3D <0x60 0x4>; + + ports { + #address-cells =3D <1>; + #size-cells =3D <0>; + + port@0 { + reg =3D <0>; + + pdfc_from_lcdif: endpoint { + remote-endpoint =3D <&lcdif_to_pdfc>; + }; + }; + + port@1 { + reg =3D <1>; + + pdfc_to_panel: endpoint { + remote-endpoint =3D <&panel_from_pdfc>; + }; + }; + }; + }; + }; --=20 2.37.1 From nobody Sun Feb 8 14:30:33 2026 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 47382C77B7A for ; Wed, 31 May 2023 09:27:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235498AbjEaJ1p (ORCPT ); Wed, 31 May 2023 05:27:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35936 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235511AbjEaJ1d (ORCPT ); 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Received: from AM7PR04MB7046.eurprd04.prod.outlook.com (2603:10a6:20b:113::22) by AM8PR04MB7859.eurprd04.prod.outlook.com (2603:10a6:20b:24c::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6455.22; Wed, 31 May 2023 09:27:28 +0000 Received: from AM7PR04MB7046.eurprd04.prod.outlook.com ([fe80::f3d5:528:d12d:50d0]) by AM7PR04MB7046.eurprd04.prod.outlook.com ([fe80::f3d5:528:d12d:50d0%4]) with mapi id 15.20.6455.020; Wed, 31 May 2023 09:27:28 +0000 From: Liu Ying To: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: andrzej.hajda@intel.com, neil.armstrong@linaro.org, rfoss@kernel.org, Laurent.pinchart@ideasonboard.com, jonas@kwiboo.se, jernej.skrabec@gmail.com, airlied@gmail.com, daniel@ffwll.ch, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com Subject: [PATCH v2 2/2] drm/bridge: imx: Add i.MX93 parallel display format configuration support Date: Wed, 31 May 2023 17:32:06 +0800 Message-Id: <20230531093206.3893469-3-victor.liu@nxp.com> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20230531093206.3893469-1-victor.liu@nxp.com> References: <20230531093206.3893469-1-victor.liu@nxp.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: SG2PR02CA0118.apcprd02.prod.outlook.com (2603:1096:4:92::34) To AM7PR04MB7046.eurprd04.prod.outlook.com (2603:10a6:20b:113::22) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AM7PR04MB7046:EE_|AM8PR04MB7859:EE_ X-MS-Office365-Filtering-Correlation-Id: 2557ad54-543d-46aa-7ca2-08db61b94062 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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charset="utf-8" NXP i.MX93 mediamix blk-ctrl contains one DISPLAY_MUX register which configures parallel display format by using the "PARALLEL_DISP_FORMAT" field. Add a DRM bridge driver to support the display format configuration. Signed-off-by: Liu Ying --- v1->v2: * Set *num_input_fmts to zero in case imx93_pdfc_bridge_atomic_get_input_bus_fmts() returns NULL. * Replace .remove callback with .remove_new callback in imx93_pdfc_bridge_driver. drivers/gpu/drm/bridge/imx/Kconfig | 8 + drivers/gpu/drm/bridge/imx/Makefile | 1 + drivers/gpu/drm/bridge/imx/imx93-pdfc.c | 209 ++++++++++++++++++++++++ 3 files changed, 218 insertions(+) create mode 100644 drivers/gpu/drm/bridge/imx/imx93-pdfc.c diff --git a/drivers/gpu/drm/bridge/imx/Kconfig b/drivers/gpu/drm/bridge/im= x/Kconfig index 608f47f41bcd..adbd75a924d1 100644 --- a/drivers/gpu/drm/bridge/imx/Kconfig +++ b/drivers/gpu/drm/bridge/imx/Kconfig @@ -44,4 +44,12 @@ config DRM_IMX8QXP_PIXEL_LINK_TO_DPI Choose this to enable pixel link to display pixel interface(PXL2DPI) found in Freescale i.MX8qxp processor. =20 +config DRM_IMX93_PARALLEL_DISP_FMT_CONFIG + tristate "NXP i.MX93 parallel display format configuration" + depends on OF + select DRM_KMS_HELPER + help + Choose this to enable parallel display format configuration + found in NXP i.MX93 processor. + endif # ARCH_MXC || COMPILE_TEST diff --git a/drivers/gpu/drm/bridge/imx/Makefile b/drivers/gpu/drm/bridge/i= mx/Makefile index aa90ec8d5433..e88821733770 100644 --- a/drivers/gpu/drm/bridge/imx/Makefile +++ b/drivers/gpu/drm/bridge/imx/Makefile @@ -7,3 +7,4 @@ obj-$(CONFIG_DRM_IMX8QXP_LDB) +=3D imx8qxp-ldb.o obj-$(CONFIG_DRM_IMX8QXP_PIXEL_COMBINER) +=3D imx8qxp-pixel-combiner.o obj-$(CONFIG_DRM_IMX8QXP_PIXEL_LINK) +=3D imx8qxp-pixel-link.o obj-$(CONFIG_DRM_IMX8QXP_PIXEL_LINK_TO_DPI) +=3D imx8qxp-pxl2dpi.o +obj-$(CONFIG_DRM_IMX93_PARALLEL_DISP_FMT_CONFIG) +=3D imx93-pdfc.o diff --git a/drivers/gpu/drm/bridge/imx/imx93-pdfc.c b/drivers/gpu/drm/brid= ge/imx/imx93-pdfc.c new file mode 100644 index 000000000000..61e01b503be5 --- /dev/null +++ b/drivers/gpu/drm/bridge/imx/imx93-pdfc.c @@ -0,0 +1,209 @@ +// SPDX-License-Identifier: GPL-2.0+ + +/* + * Copyright 2022,2023 NXP + */ + +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#define DRIVER_NAME "imx93_pdfc" + +#define DISPLAY_MUX 0x60 +#define PARALLEL_DISP_FORMAT 0x700 + +enum imx93_pdfc_format { + RGB888_TO_RGB888 =3D 0x0, + RGB888_TO_RGB666 =3D 0x1 << 8, + RGB565_TO_RGB565 =3D 0x2 << 8, +}; + +struct imx93_pdfc { + struct drm_bridge bridge; + struct drm_bridge *next_bridge; + struct device *dev; + struct regmap *regmap; + u32 format; +}; + +static int imx93_pdfc_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) +{ + struct imx93_pdfc *pdfc =3D bridge->driver_private; + + return drm_bridge_attach(bridge->encoder, pdfc->next_bridge, bridge, flag= s); +} + +static void +imx93_pdfc_bridge_atomic_enable(struct drm_bridge *bridge, + struct drm_bridge_state *old_bridge_state) +{ + struct imx93_pdfc *pdfc =3D bridge->driver_private; + + regmap_update_bits(pdfc->regmap, DISPLAY_MUX, PARALLEL_DISP_FORMAT, + pdfc->format); +} + +static const u32 imx93_pdfc_bus_output_fmts[] =3D { + MEDIA_BUS_FMT_RGB888_1X24, + MEDIA_BUS_FMT_RGB666_1X18, + MEDIA_BUS_FMT_RGB565_1X16, + MEDIA_BUS_FMT_FIXED +}; + +static bool imx93_pdfc_bus_output_fmt_supported(u32 fmt) +{ + int i; + + for (i =3D 0; i < ARRAY_SIZE(imx93_pdfc_bus_output_fmts); i++) { + if (imx93_pdfc_bus_output_fmts[i] =3D=3D fmt) + return true; + } + + return false; +} + +static u32 * +imx93_pdfc_bridge_atomic_get_input_bus_fmts(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state, + u32 output_fmt, + unsigned int *num_input_fmts) +{ + u32 *input_fmts; + + *num_input_fmts =3D 0; + + if (!imx93_pdfc_bus_output_fmt_supported(output_fmt)) + return NULL; + + input_fmts =3D kmalloc(sizeof(*input_fmts), GFP_KERNEL); + if (!input_fmts) + return NULL; + + switch (output_fmt) { + case MEDIA_BUS_FMT_RGB888_1X24: + case MEDIA_BUS_FMT_RGB565_1X16: + input_fmts[0] =3D output_fmt; + break; + case MEDIA_BUS_FMT_RGB666_1X18: + case MEDIA_BUS_FMT_FIXED: + input_fmts[0] =3D MEDIA_BUS_FMT_RGB888_1X24; + break; + } + + *num_input_fmts =3D 1; + + return input_fmts; +} + +static int imx93_pdfc_bridge_atomic_check(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state) +{ + struct imx93_pdfc *pdfc =3D bridge->driver_private; + + switch (bridge_state->output_bus_cfg.format) { + case MEDIA_BUS_FMT_RGB888_1X24: + pdfc->format =3D RGB888_TO_RGB888; + break; + case MEDIA_BUS_FMT_RGB666_1X18: + pdfc->format =3D RGB888_TO_RGB666; + break; + case MEDIA_BUS_FMT_RGB565_1X16: + pdfc->format =3D RGB565_TO_RGB565; + break; + default: + DRM_DEV_DEBUG_DRIVER(pdfc->dev, "Unsupported output bus format: 0x%x\n", + bridge_state->output_bus_cfg.format); + return -EINVAL; + } + + return 0; +} + +static const struct drm_bridge_funcs imx93_pdfc_bridge_funcs =3D { + .attach =3D imx93_pdfc_bridge_attach, + .atomic_enable =3D imx93_pdfc_bridge_atomic_enable, + .atomic_duplicate_state =3D drm_atomic_helper_bridge_duplicate_state, + .atomic_destroy_state =3D drm_atomic_helper_bridge_destroy_state, + .atomic_get_input_bus_fmts =3D imx93_pdfc_bridge_atomic_get_input_bus_fmt= s, + .atomic_check =3D imx93_pdfc_bridge_atomic_check, + .atomic_reset =3D drm_atomic_helper_bridge_reset, +}; + +static int imx93_pdfc_bridge_probe(struct platform_device *pdev) +{ + struct device *dev =3D &pdev->dev; + struct imx93_pdfc *pdfc; + int ret; + + pdfc =3D devm_kzalloc(dev, sizeof(*pdfc), GFP_KERNEL); + if (!pdfc) + return -ENOMEM; + + pdfc->regmap =3D syscon_node_to_regmap(dev->of_node->parent); + if (IS_ERR(pdfc->regmap)) { + ret =3D PTR_ERR(pdfc->regmap); + if (ret !=3D -EPROBE_DEFER) + DRM_DEV_ERROR(dev, "failed to get regmap: %d\n", ret); + return ret; + } + + pdfc->next_bridge =3D devm_drm_of_get_bridge(dev, dev->of_node, 1, 0); + if (IS_ERR(pdfc->next_bridge)) { + ret =3D PTR_ERR(pdfc->next_bridge); + if (ret !=3D -EPROBE_DEFER) + DRM_DEV_ERROR(dev, "failed to get next bridge: %d\n", ret); + return ret; + } + + platform_set_drvdata(pdev, pdfc); + + pdfc->dev =3D dev; + pdfc->bridge.driver_private =3D pdfc; + pdfc->bridge.funcs =3D &imx93_pdfc_bridge_funcs; + pdfc->bridge.of_node =3D dev->of_node; + + drm_bridge_add(&pdfc->bridge); + + return 0; +} + +static void imx93_pdfc_bridge_remove(struct platform_device *pdev) +{ + struct imx93_pdfc *pdfc =3D platform_get_drvdata(pdev); + + drm_bridge_remove(&pdfc->bridge); +} + +static const struct of_device_id imx93_pdfc_dt_ids[] =3D { + { .compatible =3D "nxp,imx93-pdfc", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, imx93_pdfc_dt_ids); + +static struct platform_driver imx93_pdfc_bridge_driver =3D { + .probe =3D imx93_pdfc_bridge_probe, + .remove_new =3D imx93_pdfc_bridge_remove, + .driver =3D { + .of_match_table =3D imx93_pdfc_dt_ids, + .name =3D DRIVER_NAME, + }, +}; +module_platform_driver(imx93_pdfc_bridge_driver); + +MODULE_DESCRIPTION("NXP i.MX93 parallel display format configuration drive= r"); +MODULE_AUTHOR("Liu Ying "); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:" DRIVER_NAME); --=20 2.37.1