From patchwork Wed Nov 24 17:25:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jagan Teki X-Patchwork-Id: 12637215 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6602BC433EF for ; Wed, 24 Nov 2021 17:26:15 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 50E506E895; Wed, 24 Nov 2021 17:26:14 +0000 (UTC) Received: from mail-pj1-x1031.google.com (mail-pj1-x1031.google.com [IPv6:2607:f8b0:4864:20::1031]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5A3CD6E895 for ; Wed, 24 Nov 2021 17:26:12 +0000 (UTC) Received: by mail-pj1-x1031.google.com with SMTP id fv9-20020a17090b0e8900b001a6a5ab1392so3373020pjb.1 for ; Wed, 24 Nov 2021 09:26:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=ODX0ZjJmyHGUcMXQPTbTnl3S63FnL3kepW5lX1cGeNY=; b=DHvsXg/+r78mH1qh76abKGzlH/qF19jhs2yZOpILIqAAqOj4DDV9umjGTFITzUU7jB XjKw545y4dkUxA00IrhFSQuVomJn+KmswabcoCsGZglQL32CgCkQzSL3YJcWZ9lY+FGZ TOBnQsguh6LAy6WoQ/yCqhoKtWzmhpHqAgbeM= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=ODX0ZjJmyHGUcMXQPTbTnl3S63FnL3kepW5lX1cGeNY=; b=LFUuZmlsBy3CX+PxxEmneXBWW7R9TxPAgGdgd5WVCVkOzMKrAc1vAfRGt3JsBwyo0g og05ssiCNt8H4MVkhEjwaKmNuj3rjDqZfJGjGz5Cdunlkspug7GlriB7UCCAMczD3H1Z KxC1c87WuSCbSK503VYT0mVxp/7Vo6XS4Vf3zbRdPpngmkzAVcO6D1tb8KRJwdoMnePY FImEAAh7A/QLA2Cu6K8Pe1K48giE3qSo8l6XVKA+kVFwRGDjxBhmA/YRLRHdptAFtfQF 1r5/PvPmEgpg+XdYKnIjCfz32B6Mp04BOf63Xt7Sxqiq7ZOpRkVSe6y9DPYETPpI3lsq aUog== X-Gm-Message-State: AOAM533WJQ6Pyi1Zg2FPgC5O+fjAOUTt33N56M8oGTw8glJLLJdPC4tJ cJSwgIUu2i9GHMIEn6nOpIcBQw== X-Google-Smtp-Source: ABdhPJzeqt4umbVvn7VbSHx9cMq9BUa8sVx4pV9RIIAAFXfGZ4bjhGirVGeErOuHZhddz512bRW6Zw== X-Received: by 2002:a17:902:ec90:b0:142:269:4691 with SMTP id x16-20020a170902ec9000b0014202694691mr20396873plg.48.1637774771908; Wed, 24 Nov 2021 09:26:11 -0800 (PST) Received: from localhost.localdomain ([2405:201:c00a:a0a9:d111:e958:d982:546e]) by smtp.gmail.com with ESMTPSA id s19sm334618pfu.104.2021.11.24.09.26.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 24 Nov 2021 09:26:11 -0800 (PST) From: Jagan Teki To: Rob Herring , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart Subject: [PATCH 1/2] dt-bindings: display: bridge: Add TI DLPC3433 bindings Date: Wed, 24 Nov 2021 22:55:52 +0530 Message-Id: <20211124172553.519309-1-jagan@amarulasolutions.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Christopher Vollo , linux-amarula@amarulasolutions.com, dri-devel@lists.freedesktop.org, Jagan Teki , Sam Ravnborg Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" TI DLPC3433 is a MIPI DSI based display controller bridge for processing high resolution DMD based projectors. It has a flexible configuration of MIPI DSI signal input produces RGB565, RGB666, RGB888 output format with maximum of 720p resolution in 60 and 120 Hz refresh rates. Add dt-bingings for it. Signed-off-by: Christopher Vollo Signed-off-by: Jagan Teki --- .../bindings/display/bridge/ti,dlpc3433.yaml | 112 ++++++++++++++++++ MAINTAINERS | 6 + 2 files changed, 118 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/bridge/ti,dlpc3433.yaml diff --git a/Documentation/devicetree/bindings/display/bridge/ti,dlpc3433.yaml b/Documentation/devicetree/bindings/display/bridge/ti,dlpc3433.yaml new file mode 100644 index 000000000000..3ade3a575c3e --- /dev/null +++ b/Documentation/devicetree/bindings/display/bridge/ti,dlpc3433.yaml @@ -0,0 +1,112 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/bridge/ti,dlpc3433.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: TI DLPC3433 Display Controller + +maintainers: + - Jagan Teki + - Christopher Vollo + +description: | + The DLPC3433 or DLPC3438 controllers provide a convenient, + multi-functional interface between system electronics and + the DMD, enabling small form factor, low power, and high + resolution HD displays. + +properties: + compatible: + enum: + - ti,dlpc3433 + + reg: + maxItems: 1 + description: virtual channel number of a DSI peripheral + + enable-gpios: + description: PROJ_EN pin, chip powers up PROJ_EN is high. + + vcc_intf-supply: + description: A 1.8V/3.3V supply that power the Host I/O. + + vcc_flsh-supply: + description: A 1.8V/3.3V supply that power the Flash I/O. + + ports: + $ref: /schemas/graph.yaml#/properties/ports + + properties: + port@0: + $ref: /schemas/graph.yaml#/$defs/port-base + unevaluatedProperties: false + description: Video port for MIPI DSI input. + + properties: + endpoint: + $ref: /schemas/media/video-interfaces.yaml# + unevaluatedProperties: false + + properties: + data-lanes: + description: array of physical DSI data lane indexes. + minItems: 1 + items: + - const: 1 + - const: 2 + - const: 3 + - const: 4 + + port@1: + $ref: /schemas/graph.yaml#/properties/port + description: Video port for DPI output (DMD Projector). + + required: + - port@0 + - port@1 + +required: + - compatible + - reg + - enable-gpios + - ports + +additionalProperties: false + +examples: + - | + #include + + i2c1 { + #address-cells = <1>; + #size-cells = <0>; + + bridge@1d { + compatible = "ti,dlpc3433"; + reg = <0x1d>; + enable-gpios = <&gpio2 1 GPIO_ACTIVE_HIGH>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + bridge_in_dsi: endpoint { + remote-endpoint = <&dsi_out_bridge>; + data-lanes = <1 2 3 4>; + }; + }; + + port@1 { + reg = <1>; + + bridge_out_panel: endpoint { + remote-endpoint = <&panel_out_bridge>; + }; + }; + }; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index f32c7d733255..a3019399dec0 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6198,6 +6198,12 @@ DRM DRIVER FOR TDFX VIDEO CARDS S: Orphan / Obsolete F: drivers/gpu/drm/tdfx/ +DRM DRIVER FOR TI DLPC3433 MIPI DSI DISPLAY CONTROLLER BRIDGE +M: Jagan Teki +M: Christopher Vollo +S: Maintained +F: Documentation/devicetree/bindings/display/bridge/ti,dlpc3433.yaml + DRM DRIVER FOR TPO TPG110 PANELS M: Linus Walleij S: Maintained From patchwork Wed Nov 24 17:25:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jagan Teki X-Patchwork-Id: 12637217 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E0A44C433F5 for ; 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Wed, 24 Nov 2021 09:26:15 -0800 (PST) From: Jagan Teki To: Rob Herring , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart Subject: [PATCH 2/2] drm: bridge: Add TI DLPC3433 Date: Wed, 24 Nov 2021 22:55:53 +0530 Message-Id: <20211124172553.519309-2-jagan@amarulasolutions.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211124172553.519309-1-jagan@amarulasolutions.com> References: <20211124172553.519309-1-jagan@amarulasolutions.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Christopher Vollo , linux-amarula@amarulasolutions.com, dri-devel@lists.freedesktop.org, Jagan Teki , Sam Ravnborg Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" TI DLPC3433 is a MIPI DSI based display controller bridge for processing high resolution DMD based projectors. It has a flexible configuration of MIPI DSI signal input produces RGB565, RGB666, RGB888 output format with maximum of 720p resolution. Add bridge driver for it. Signed-off-by: Christopher Vollo Signed-off-by: Jagan Teki --- MAINTAINERS | 1 + drivers/gpu/drm/bridge/Kconfig | 13 + drivers/gpu/drm/bridge/Makefile | 1 + drivers/gpu/drm/bridge/ti-dlpc3433.c | 386 +++++++++++++++++++++++++++ 4 files changed, 401 insertions(+) create mode 100644 drivers/gpu/drm/bridge/ti-dlpc3433.c diff --git a/MAINTAINERS b/MAINTAINERS index a3019399dec0..36a63b4f96c3 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6203,6 +6203,7 @@ M: Jagan Teki M: Christopher Vollo S: Maintained F: Documentation/devicetree/bindings/display/bridge/ti,dlpc3433.yaml +F: drivers/gpu/drm/bridge/ti-dlpc3433.c DRM DRIVER FOR TPO TPG110 PANELS M: Linus Walleij diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig index 61db5a66b493..5fc51e537829 100644 --- a/drivers/gpu/drm/bridge/Kconfig +++ b/drivers/gpu/drm/bridge/Kconfig @@ -279,6 +279,19 @@ config DRM_TOSHIBA_TC358775 help Toshiba TC358775 DSI/LVDS bridge chip driver. +config DRM_TI_DLPC3433 + tristate "TI DLPC3433 Display controller" + depends on DRM && DRM_PANEL + depends on OF + select DRM_MIPI_DSI + help + TI DLPC3433 is a MIPI DSI based display controller bridge + for processing high resolution DMD based projectors. + + It has a flexible configuration of MIPI DSI signal input + produces RGB565, RGB666, RGB888 output format with maximum + of 720p resolution in 60 and 120 Hz refresh rates. + config DRM_TI_TFP410 tristate "TI TFP410 DVI/HDMI bridge" depends on OF diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile index f2c73683cfcb..7ff4bf27e6b5 100644 --- a/drivers/gpu/drm/bridge/Makefile +++ b/drivers/gpu/drm/bridge/Makefile @@ -23,6 +23,7 @@ obj-$(CONFIG_DRM_TOSHIBA_TC358767) += tc358767.o obj-$(CONFIG_DRM_TOSHIBA_TC358768) += tc358768.o obj-$(CONFIG_DRM_TOSHIBA_TC358775) += tc358775.o obj-$(CONFIG_DRM_I2C_ADV7511) += adv7511/ +obj-$(CONFIG_DRM_TI_DLPC3433) += ti-dlpc3433.o obj-$(CONFIG_DRM_TI_SN65DSI83) += ti-sn65dsi83.o obj-$(CONFIG_DRM_TI_SN65DSI86) += ti-sn65dsi86.o obj-$(CONFIG_DRM_TI_TFP410) += ti-tfp410.o diff --git a/drivers/gpu/drm/bridge/ti-dlpc3433.c b/drivers/gpu/drm/bridge/ti-dlpc3433.c new file mode 100644 index 000000000000..557fa832a2fd --- /dev/null +++ b/drivers/gpu/drm/bridge/ti-dlpc3433.c @@ -0,0 +1,386 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2021 RenewOutReach + * Copyright (C) 2021 Amarula Solutions(India) + * + * Author: + * Jagan Teki + * Christopher Vollo + */ + +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +enum cmd_registers { + WR_INPUT_SOURCE = 0x05, /* Write Input Source Select */ + WR_EXT_SOURCE_FMT = 0x07, /* Write External Video Source Format */ + WR_IMAGE_CROP = 0x10, /* Write Image Crop */ + WR_DISPLAY_SIZE = 0x12, /* Write Display Size */ + WR_IMAGE_FREEZE = 0x1A, /* Write Image Freeze */ + WR_INPUT_IMAGE_SIZE = 0x2E, /* Write External Input Image Size */ + WR_RGB_LED_EN = 0x52, /* Write RGB LED Enable */ + WR_RGB_LED_CURRENT = 0x54, /* Write RGB LED Current */ + WR_RGB_LED_MAX_CURRENT = 0x5C, /* Write RGB LED Max Current */ + WR_DSI_HS_CLK = 0xBD, /* Write DSI HS Clock */ + RD_DEVICE_ID = 0xD4, /* Read Controller Device ID */ + WR_DSI_PORT_EN = 0xD7, /* Write DSI Port Enable */ +}; + +enum dev_id { + DLPC3430 = 0x0, + DLPC3433, +}; + +enum input_source { + INPUT_EXTERNAL_VIDEO = 0, + INPUT_TEST_PATTERN, + INPUT_SPLASH_SCREEN, +}; + +#define DEV_ID_MASK GENMASK(3, 0) +#define IMAGE_FREESE_EN BIT(0) +#define DSI_PORT_EN 0 +#define EXT_SOURCE_FMT_DSI 0 +#define RED_LED_EN BIT(0) +#define GREEN_LED_EN BIT(1) +#define BLUE_LED_EN BIT(2) +#define LED_MASK GENMASK(2, 0) +#define MAX_BYTE_SIZE 8 + +struct dlpc { + struct device *dev; + struct drm_bridge bridge; + struct drm_bridge *panel_bridge; + struct device_node *host_node; + struct mipi_dsi_device *dsi; + struct drm_display_mode mode; + + struct gpio_desc *enable_gpio; + struct regulator *vcc_intf; + struct regulator *vcc_flsh; + struct regmap *regmap; + unsigned int dsi_lanes; +}; + +static inline struct dlpc *bridge_to_dlpc(struct drm_bridge *bridge) +{ + return container_of(bridge, struct dlpc, bridge); +} + +static bool dlpc_writeable_noinc_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case WR_IMAGE_CROP: + case WR_DISPLAY_SIZE: + case WR_INPUT_IMAGE_SIZE: + case WR_DSI_HS_CLK: + return true; + default: + return false; + } +} + +static const struct regmap_range dlpc_volatile_ranges[] = { + { .range_min = 0x10, .range_max = 0xBF }, +}; + +static const struct regmap_access_table dlpc_volatile_table = { + .yes_ranges = dlpc_volatile_ranges, + .n_yes_ranges = ARRAY_SIZE(dlpc_volatile_ranges), +}; + +static struct regmap_config dlpc_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = WR_DSI_PORT_EN, + .writeable_noinc_reg = dlpc_writeable_noinc_reg, + .volatile_table = &dlpc_volatile_table, + .cache_type = REGCACHE_RBTREE, + .name = "dlpc3433", +}; + +static void dlpc_atomic_enable(struct drm_bridge *bridge, + struct drm_bridge_state *old_bridge_state) +{ + struct dlpc *dlpc = bridge_to_dlpc(bridge); + struct drm_display_mode *mode = &dlpc->mode; + struct regmap *regmap = dlpc->regmap; + char buf[MAX_BYTE_SIZE]; + unsigned int devid; + + regmap_read(regmap, RD_DEVICE_ID, &devid); + WARN_ON(DLPC3433 != (devid & DEV_ID_MASK)); + + /* disable image freeze */ + regmap_write(regmap, WR_IMAGE_FREEZE, IMAGE_FREESE_EN); + + /* enable DSI port */ + regmap_write(regmap, WR_DSI_PORT_EN, DSI_PORT_EN); + + memset(buf, 0, MAX_BYTE_SIZE); + + /* set image crop */ + buf[4] = mode->hdisplay & 0xff; + buf[5] = (mode->hdisplay & 0xff00) >> 8; + buf[6] = mode->vdisplay & 0xff; + buf[7] = (mode->vdisplay & 0xff00) >> 8; + regmap_noinc_write(regmap, WR_IMAGE_CROP, buf, MAX_BYTE_SIZE); + + /* set display size */ + regmap_noinc_write(regmap, WR_DISPLAY_SIZE, buf, MAX_BYTE_SIZE); + + /* set input image size */ + buf[0] = mode->hdisplay & 0xff; + buf[1] = (mode->hdisplay & 0xff00) >> 8; + buf[2] = mode->vdisplay & 0xff; + buf[3] = (mode->vdisplay & 0xff00) >> 8; + regmap_noinc_write(regmap, WR_INPUT_IMAGE_SIZE, buf, 4); + + /* set external video port */ + regmap_write(regmap, WR_INPUT_SOURCE, INPUT_EXTERNAL_VIDEO); + + /* set external video format select as DSI */ + regmap_write(regmap, WR_EXT_SOURCE_FMT, EXT_SOURCE_FMT_DSI); + + /* disable image freeze */ + regmap_write(regmap, WR_IMAGE_FREEZE, 0x00); + + /* enable RGB led */ + regmap_update_bits(regmap, WR_RGB_LED_EN, LED_MASK, + RED_LED_EN | GREEN_LED_EN | BLUE_LED_EN); + + msleep(10); +} + +static void dlpc_atomic_pre_enable(struct drm_bridge *bridge, + struct drm_bridge_state *old_bridge_state) +{ + struct dlpc *dlpc = bridge_to_dlpc(bridge); + int ret; + + gpiod_set_value(dlpc->enable_gpio, 1); + + msleep(500); + + if (dlpc->vcc_intf) { + ret = regulator_enable(dlpc->vcc_intf); + if (ret) + DRM_DEV_ERROR(dlpc->dev, + "failed to enable VCC_INTF regulator: %d\n", ret); + } + + if (dlpc->vcc_flsh) { + ret = regulator_enable(dlpc->vcc_flsh); + if (ret) + DRM_DEV_ERROR(dlpc->dev, + "failed to enable VCC_FLSH regulator: %d\n", ret); + } +} + +static void dlpc_atomic_post_disable(struct drm_bridge *bridge, + struct drm_bridge_state *old_bridge_state) +{ + struct dlpc *dlpc = bridge_to_dlpc(bridge); + + regulator_disable(dlpc->vcc_flsh); + regulator_disable(dlpc->vcc_intf); + + msleep(500); + + gpiod_set_value(dlpc->enable_gpio, 0); +} + +static void dlpc_mode_set(struct drm_bridge *bridge, + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode) +{ + struct dlpc *dlpc = bridge_to_dlpc(bridge); + + drm_mode_copy(&dlpc->mode, adjusted_mode); +} + +static int dlpc_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) +{ + struct dlpc *dlpc = bridge_to_dlpc(bridge); + + return drm_bridge_attach(bridge->encoder, dlpc->panel_bridge, + bridge, flags); +} + +static const struct drm_bridge_funcs dlpc_bridge_funcs = { + .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, + .atomic_reset = drm_atomic_helper_bridge_reset, + .atomic_pre_enable = dlpc_atomic_pre_enable, + .atomic_enable = dlpc_atomic_enable, + .atomic_post_disable = dlpc_atomic_post_disable, + .mode_set = dlpc_mode_set, + .attach = dlpc_attach, +}; + +static int dlpc3433_parse_dt(struct dlpc *dlpc) +{ + struct device *dev = dlpc->dev; + struct device_node *endpoint; + struct drm_panel *panel; + int ret; + + dlpc->vcc_intf = devm_regulator_get(dlpc->dev, "vcc_intf"); + if (IS_ERR(dlpc->vcc_intf)) { + return PTR_ERR(dlpc->vcc_intf); + if (ret == -EPROBE_DEFER) + return -EPROBE_DEFER; + dlpc->vcc_intf = NULL; + } + + dlpc->vcc_flsh = devm_regulator_get(dlpc->dev, "vcc_flsh"); + if (IS_ERR(dlpc->vcc_flsh)) { + return PTR_ERR(dlpc->vcc_flsh); + if (ret == -EPROBE_DEFER) + return -EPROBE_DEFER; + dlpc->vcc_flsh = NULL; + } + + dlpc->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW); + if (IS_ERR(dlpc->enable_gpio)) + return PTR_ERR(dlpc->enable_gpio); + + ret = drm_of_find_panel_or_bridge(dev->of_node, 1, 0, &panel, NULL); + if (ret) + return ret; + if (panel) { + dlpc->panel_bridge = devm_drm_panel_bridge_add(dev, panel); + if (IS_ERR(dlpc->panel_bridge)) + return PTR_ERR(dlpc->panel_bridge); + } + + endpoint = of_graph_get_endpoint_by_regs(dev->of_node, 0, 0); + dlpc->dsi_lanes = of_property_count_u32_elems(endpoint, "data-lanes"); + dlpc->host_node = of_graph_get_remote_port_parent(endpoint); + of_node_put(endpoint); + + if (dlpc->dsi_lanes < 0 || dlpc->dsi_lanes > 4) + return -EINVAL; + if (!dlpc->host_node) + return -ENODEV; + + return 0; +} + +static int dlpc_host_attach(struct dlpc *dlpc) +{ + struct device *dev = dlpc->dev; + struct mipi_dsi_host *host; + struct mipi_dsi_device_info info = { + .type = "dlpc3433", + .channel = 0, + .node = NULL, + }; + int ret; + + host = of_find_mipi_dsi_host_by_node(dlpc->host_node); + if (!host) { + DRM_DEV_ERROR(dev, "failed to find dsi host\n"); + return -EPROBE_DEFER; + } + + dlpc->dsi = mipi_dsi_device_register_full(host, &info); + if (IS_ERR(dlpc->dsi)) { + DRM_DEV_ERROR(dev, "failed to create dsi device\n"); + return PTR_ERR(dlpc->dsi); + } + + dlpc->dsi->mode_flags = MIPI_DSI_MODE_VIDEO_BURST; + dlpc->dsi->format = MIPI_DSI_FMT_RGB565; + dlpc->dsi->lanes = dlpc->dsi_lanes; + + return devm_mipi_dsi_attach(dev, dlpc->dsi); +} + +static int dlpc3433_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct dlpc *dlpc; + int ret; + + dlpc = devm_kzalloc(dev, sizeof(*dlpc), GFP_KERNEL); + if (!dlpc) + return -ENOMEM; + + dlpc->dev = dev; + + dev_set_drvdata(dev, dlpc); + i2c_set_clientdata(client, dlpc); + + dlpc->regmap = devm_regmap_init_i2c(client, &dlpc_regmap_config); + if (IS_ERR(dlpc->regmap)) + return PTR_ERR(dlpc->regmap); + + ret = dlpc3433_parse_dt(dlpc); + if (ret) + return ret; + + dlpc->bridge.funcs = &dlpc_bridge_funcs; + dlpc->bridge.of_node = dev->of_node; + drm_bridge_add(&dlpc->bridge); + + ret = dlpc_host_attach(dlpc); + if (ret) { + DRM_DEV_ERROR(dev, "failed to attach dsi host\n"); + goto err_remove_bridge; + } + + return 0; + +err_remove_bridge: + drm_bridge_remove(&dlpc->bridge); + return ret; +} + +static int dlpc3433_remove(struct i2c_client *client) +{ + struct dlpc *dlpc = i2c_get_clientdata(client); + + drm_bridge_remove(&dlpc->bridge); + of_node_put(dlpc->host_node); + + return 0; +} + +static const struct i2c_device_id dlpc3433_id[] = { + { "ti,dlpc3433", 0 }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(i2c, dlpc3433_id); + +static const struct of_device_id dlpc3433_match_table[] = { + { .compatible = "ti,dlpc3433" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, dlpc3433_match_table); + +static struct i2c_driver dlpc3433_driver = { + .probe_new = dlpc3433_probe, + .remove = dlpc3433_remove, + .id_table = dlpc3433_id, + .driver = { + .name = "ti-dlpc3433", + .of_match_table = dlpc3433_match_table, + }, +}; +module_i2c_driver(dlpc3433_driver); + +MODULE_AUTHOR("Jagan Teki "); +MODULE_AUTHOR("Christopher Vollo "); +MODULE_DESCRIPTION("TI DLPC3433 MIPI DSI Display Controller Bridge"); +MODULE_LICENSE("GPL v2");