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Document the Parallel Display Format Configuration(PDFC) subnode and add the subnode to example. Signed-off-by: Liu Ying Reviewed-by: Conor Dooley --- v3->v4: * No change. v2->v3: * Newly introduced to replace the standalone dt-binding in v1 and v2. (Rob) * Resend with Conor's R-b tag and with the patch rebased upon v6.11-rc1. .../soc/imx/fsl,imx93-media-blk-ctrl.yaml | 68 +++++++++++++++++++ 1 file changed, 68 insertions(+) diff --git a/Documentation/devicetree/bindings/soc/imx/fsl,imx93-media-blk-ctrl.yaml b/Documentation/devicetree/bindings/soc/imx/fsl,imx93-media-blk-ctrl.yaml index b3554e7f9e76..3f550c30d93d 100644 --- a/Documentation/devicetree/bindings/soc/imx/fsl,imx93-media-blk-ctrl.yaml +++ b/Documentation/devicetree/bindings/soc/imx/fsl,imx93-media-blk-ctrl.yaml @@ -24,6 +24,12 @@ properties: reg: maxItems: 1 + '#address-cells': + const: 1 + + '#size-cells': + const: 1 + '#power-domain-cells': const: 1 @@ -46,9 +52,43 @@ properties: - const: csi - const: dsi + bridge@60: + type: object + additionalProperties: false + + 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 + - reg + - ports + required: - compatible - reg + - '#address-cells' + - '#size-cells' - power-domains - clocks - clock-names @@ -76,5 +116,33 @@ examples: <&clk IMX93_CLK_MIPI_DSI_GATE>; 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Received: from AM7PR04MB7046.eurprd04.prod.outlook.com (2603:10a6:20b:113::22) by DU2PR04MB8807.eurprd04.prod.outlook.com (2603:10a6:10:2e2::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7875.21; Mon, 19 Aug 2024 02:40:18 +0000 Received: from AM7PR04MB7046.eurprd04.prod.outlook.com ([fe80::d1ce:ea15:6648:6f90]) by AM7PR04MB7046.eurprd04.prod.outlook.com ([fe80::d1ce:ea15:6648:6f90%2]) with mapi id 15.20.7875.019; Mon, 19 Aug 2024 02:40:17 +0000 From: Liu Ying To: devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, victor.liu@nxp.com, andrzej.hajda@intel.com, neil.armstrong@linaro.org, rfoss@kernel.org, Laurent.pinchart@ideasonboard.com, jonas@kwiboo.se, jernej.skrabec@gmail.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, daniel@ffwll.ch, peng.fan@nxp.com, krzk@kernel.org Subject: [PATCH v4 2/2] drm/bridge: imx: Add i.MX93 parallel display format configuration support Date: Mon, 19 Aug 2024 10:40:01 +0800 Message-Id: <20240819024001.850065-3-victor.liu@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240819024001.850065-1-victor.liu@nxp.com> References: <20240819024001.850065-1-victor.liu@nxp.com> X-ClientProxiedBy: SG2P153CA0025.APCP153.PROD.OUTLOOK.COM (2603:1096:4:c7::12) To AM7PR04MB7046.eurprd04.prod.outlook.com (2603:10a6:20b:113::22) Precedence: bulk X-Mailing-List: imx@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AM7PR04MB7046:EE_|DU2PR04MB8807:EE_ X-MS-Office365-Filtering-Correlation-Id: d5e02fa4-cb5f-4bdb-bf24-08dcbff8430a X-LD-Processed: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635,ExtAddr X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|1800799024|52116014|7416014|366016|38350700014; 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Add a DRM bridge driver to support the display format configuration. Signed-off-by: Liu Ying --- v3->v4: * Use dev_err_probe() in imx93_pdfc_bridge_probe(). (Krzysztof) * Drop MODULE_ALIAS(). (Krzysztof) * Update year of Copyright. v2->v3: * No change. * Resend with the patch rebased upon v6.11-rc1. 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 | 199 ++++++++++++++++++++++++ 3 files changed, 208 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/imx/Kconfig index 8dd89efa8ea7..088241575857 100644 --- a/drivers/gpu/drm/bridge/imx/Kconfig +++ b/drivers/gpu/drm/bridge/imx/Kconfig @@ -78,4 +78,12 @@ config DRM_IMX93_MIPI_DSI Choose this to enable MIPI DSI controller found in Freescale i.MX93 processor. +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/imx/Makefile index edb0a7b71b30..8d3499fb7fba 100644 --- a/drivers/gpu/drm/bridge/imx/Makefile +++ b/drivers/gpu/drm/bridge/imx/Makefile @@ -7,3 +7,4 @@ obj-$(CONFIG_DRM_IMX8QXP_PIXEL_COMBINER) += imx8qxp-pixel-combiner.o obj-$(CONFIG_DRM_IMX8QXP_PIXEL_LINK) += imx8qxp-pixel-link.o obj-$(CONFIG_DRM_IMX8QXP_PIXEL_LINK_TO_DPI) += imx8qxp-pxl2dpi.o obj-$(CONFIG_DRM_IMX93_MIPI_DSI) += imx93-mipi-dsi.o +obj-$(CONFIG_DRM_IMX93_PARALLEL_DISP_FMT_CONFIG) += imx93-pdfc.o diff --git a/drivers/gpu/drm/bridge/imx/imx93-pdfc.c b/drivers/gpu/drm/bridge/imx/imx93-pdfc.c new file mode 100644 index 000000000000..3dd92f7a0fd6 --- /dev/null +++ b/drivers/gpu/drm/bridge/imx/imx93-pdfc.c @@ -0,0 +1,199 @@ +// SPDX-License-Identifier: GPL-2.0+ + +/* + * Copyright 2022-2024 NXP + */ + +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#define DISPLAY_MUX 0x60 +#define PARALLEL_DISP_FORMAT 0x700 + +enum imx93_pdfc_format { + RGB888_TO_RGB888 = 0x0, + RGB888_TO_RGB666 = 0x1 << 8, + RGB565_TO_RGB565 = 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 = bridge->driver_private; + + return drm_bridge_attach(bridge->encoder, pdfc->next_bridge, bridge, flags); +} + +static void +imx93_pdfc_bridge_atomic_enable(struct drm_bridge *bridge, + struct drm_bridge_state *old_bridge_state) +{ + struct imx93_pdfc *pdfc = bridge->driver_private; + + regmap_update_bits(pdfc->regmap, DISPLAY_MUX, PARALLEL_DISP_FORMAT, + pdfc->format); +} + +static const u32 imx93_pdfc_bus_output_fmts[] = { + 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 = 0; i < ARRAY_SIZE(imx93_pdfc_bus_output_fmts); i++) { + if (imx93_pdfc_bus_output_fmts[i] == 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 = 0; + + if (!imx93_pdfc_bus_output_fmt_supported(output_fmt)) + return NULL; + + input_fmts = 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] = output_fmt; + break; + case MEDIA_BUS_FMT_RGB666_1X18: + case MEDIA_BUS_FMT_FIXED: + input_fmts[0] = MEDIA_BUS_FMT_RGB888_1X24; + break; + } + + *num_input_fmts = 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 = bridge->driver_private; + + switch (bridge_state->output_bus_cfg.format) { + case MEDIA_BUS_FMT_RGB888_1X24: + pdfc->format = RGB888_TO_RGB888; + break; + case MEDIA_BUS_FMT_RGB666_1X18: + pdfc->format = RGB888_TO_RGB666; + break; + case MEDIA_BUS_FMT_RGB565_1X16: + pdfc->format = 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 = { + .attach = imx93_pdfc_bridge_attach, + .atomic_enable = imx93_pdfc_bridge_atomic_enable, + .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, + .atomic_get_input_bus_fmts = imx93_pdfc_bridge_atomic_get_input_bus_fmts, + .atomic_check = imx93_pdfc_bridge_atomic_check, + .atomic_reset = drm_atomic_helper_bridge_reset, +}; + +static int imx93_pdfc_bridge_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct imx93_pdfc *pdfc; + + pdfc = devm_kzalloc(dev, sizeof(*pdfc), GFP_KERNEL); + if (!pdfc) + return -ENOMEM; + + pdfc->regmap = syscon_node_to_regmap(dev->of_node->parent); + if (IS_ERR(pdfc->regmap)) + return dev_err_probe(dev, PTR_ERR(pdfc->regmap), + "failed to get regmap\n"); + + pdfc->next_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 1, 0); + if (IS_ERR(pdfc->next_bridge)) + return dev_err_probe(dev, PTR_ERR(pdfc->next_bridge), + "failed to get next bridge\n"); + + platform_set_drvdata(pdev, pdfc); + + pdfc->dev = dev; + pdfc->bridge.driver_private = pdfc; + pdfc->bridge.funcs = &imx93_pdfc_bridge_funcs; + pdfc->bridge.of_node = dev->of_node; + + drm_bridge_add(&pdfc->bridge); + + return 0; +} + +static void imx93_pdfc_bridge_remove(struct platform_device *pdev) +{ + struct imx93_pdfc *pdfc = platform_get_drvdata(pdev); + + drm_bridge_remove(&pdfc->bridge); +} + +static const struct of_device_id imx93_pdfc_dt_ids[] = { + { .compatible = "nxp,imx93-pdfc", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, imx93_pdfc_dt_ids); + +static struct platform_driver imx93_pdfc_bridge_driver = { + .probe = imx93_pdfc_bridge_probe, + .remove_new = imx93_pdfc_bridge_remove, + .driver = { + .of_match_table = imx93_pdfc_dt_ids, + .name = "imx93_pdfc", + }, +}; +module_platform_driver(imx93_pdfc_bridge_driver); + +MODULE_DESCRIPTION("NXP i.MX93 parallel display format configuration driver"); +MODULE_AUTHOR("Liu Ying "); +MODULE_LICENSE("GPL v2");