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 X-Spam-Level: X-Spam-Status: No, score=-10.9 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CAB48C48BC2 for ; Fri, 25 Jun 2021 12:11:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B23F06161C for ; Fri, 25 Jun 2021 12:11:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230388AbhFYMN0 (ORCPT ); Fri, 25 Jun 2021 08:13:26 -0400 Received: from aposti.net ([89.234.176.197]:43556 "EHLO aposti.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230235AbhFYMNZ (ORCPT ); Fri, 25 Jun 2021 08:13:25 -0400 From: Paul Cercueil To: Thierry Reding , Sam Ravnborg , Rob Herring Cc: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, list@opendingux.net, Christophe Branchereau , Paul Cercueil Subject: [PATCH 2/2] drm/panel: Add Innolux EJ030NA 3.0" 320x480 panel Date: Fri, 25 Jun 2021 13:10:45 +0100 Message-Id: <20210625121045.81711-2-paul@crapouillou.net> In-Reply-To: <20210625121045.81711-1-paul@crapouillou.net> References: <20210625121045.81711-1-paul@crapouillou.net> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Christophe Branchereau Add support for the Innolux/Chimei EJ030NA 3.0" 320x480 TFT panel. This panel can be found in the LDKs, RS97 V2.1 and RG300 (non IPS) handheld gaming consoles. While being 320x480, it is actually a horizontal 4:3 panel with non-square pixels in delta arrangement. Signed-off-by: Christophe Branchereau Signed-off-by: Paul Cercueil --- drivers/gpu/drm/panel/Kconfig | 9 + drivers/gpu/drm/panel/Makefile | 1 + drivers/gpu/drm/panel/panel-innolux-ej030na.c | 289 ++++++++++++++++++ 3 files changed, 299 insertions(+) create mode 100644 drivers/gpu/drm/panel/panel-innolux-ej030na.c diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 09acd18b3592..bfc6c23b2509 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -134,6 +134,15 @@ config DRM_PANEL_ILITEK_ILI9881C Say Y if you want to enable support for panels based on the Ilitek ILI9881c controller. +config DRM_PANEL_INNOLUX_EJ030NA + tristate "Innolux EJ030NA 320x480 LCD panel" + depends on OF && SPI + select REGMAP_SPI + help + Say Y here to enable support for the Innolux/Chimei EJ030NA + 320x480 3.0" panel as found in the RS97 V2.1, RG300(non-ips) + and LDK handheld gaming consoles. + config DRM_PANEL_INNOLUX_P079ZCA tristate "Innolux P079ZCA panel" depends on OF diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index a350e0990d17..1b865e8ea7c9 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -12,6 +12,7 @@ obj-$(CONFIG_DRM_PANEL_FEIXIN_K101_IM2BA02) += panel-feixin-k101-im2ba02.o obj-$(CONFIG_DRM_PANEL_FEIYANG_FY07024DI26A30D) += panel-feiyang-fy07024di26a30d.o obj-$(CONFIG_DRM_PANEL_ILITEK_IL9322) += panel-ilitek-ili9322.o obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9881C) += panel-ilitek-ili9881c.o +obj-$(CONFIG_DRM_PANEL_INNOLUX_EJ030NA) += panel-innolux-ej030na.o obj-$(CONFIG_DRM_PANEL_INNOLUX_P079ZCA) += panel-innolux-p079zca.o obj-$(CONFIG_DRM_PANEL_JDI_LT070ME05000) += panel-jdi-lt070me05000.o obj-$(CONFIG_DRM_PANEL_KHADAS_TS050) += panel-khadas-ts050.o diff --git a/drivers/gpu/drm/panel/panel-innolux-ej030na.c b/drivers/gpu/drm/panel/panel-innolux-ej030na.c new file mode 100644 index 000000000000..4160b99ef544 --- /dev/null +++ b/drivers/gpu/drm/panel/panel-innolux-ej030na.c @@ -0,0 +1,289 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Innolux/Chimei EJ030NA TFT LCD panel driver + * + * Copyright (C) 2020, Paul Cercueil + * Copyright (C) 2020, Christophe Branchereau + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +struct ej030na_info { + const struct drm_display_mode *display_modes; + unsigned int num_modes; + u16 width_mm, height_mm; + u32 bus_format, bus_flags; +}; + +struct ej030na { + struct drm_panel panel; + struct spi_device *spi; + struct regmap *map; + + const struct ej030na_info *panel_info; + + struct regulator *supply; + struct gpio_desc *reset_gpio; +}; + +static inline struct ej030na *to_ej030na(struct drm_panel *panel) +{ + return container_of(panel, struct ej030na, panel); +} + +static const struct reg_sequence ej030na_init_sequence[] = { + { 0x05, 0x1e }, + { 0x05, 0x5c }, + { 0x02, 0x14 }, + { 0x03, 0x40 }, + { 0x04, 0x07 }, + { 0x06, 0x12 }, + { 0x07, 0xd2 }, + { 0x0c, 0x06 }, + { 0x0d, 0x40 }, + { 0x0e, 0x40 }, + { 0x0f, 0x40 }, + { 0x10, 0x40 }, + { 0x11, 0x40 }, + { 0x2f, 0x40 }, + { 0x5a, 0x02 }, + + { 0x30, 0x07 }, + { 0x31, 0x57 }, + { 0x32, 0x53 }, + { 0x33, 0x77 }, + { 0x34, 0xb8 }, + { 0x35, 0xbd }, + { 0x36, 0xb8 }, + { 0x37, 0xe7 }, + { 0x38, 0x04 }, + { 0x39, 0xff }, + + { 0x40, 0x0b }, + { 0x41, 0xb8 }, + { 0x42, 0xab }, + { 0x43, 0xb9 }, + { 0x44, 0x6a }, + { 0x45, 0x56 }, + { 0x46, 0x61 }, + { 0x47, 0x08 }, + { 0x48, 0x0f }, + { 0x49, 0x0f }, + + { 0x2b, 0x01 }, +}; + +static int ej030na_prepare(struct drm_panel *panel) +{ + struct ej030na *priv = to_ej030na(panel); + struct device *dev = &priv->spi->dev; + int err; + + err = regulator_enable(priv->supply); + if (err) { + dev_err(dev, "Failed to enable power supply: %d\n", err); + return err; + } + + /* Reset the chip */ + gpiod_set_value_cansleep(priv->reset_gpio, 1); + usleep_range(50, 150); + gpiod_set_value_cansleep(priv->reset_gpio, 0); + usleep_range(50, 150); + + err = regmap_multi_reg_write(priv->map, ej030na_init_sequence, + ARRAY_SIZE(ej030na_init_sequence)); + if (err) { + dev_err(dev, "Failed to init registers: %d\n", err); + goto err_disable_regulator; + } + + msleep(120); + + return 0; + +err_disable_regulator: + regulator_disable(priv->supply); + return err; +} + +static int ej030na_unprepare(struct drm_panel *panel) +{ + struct ej030na *priv = to_ej030na(panel); + + gpiod_set_value_cansleep(priv->reset_gpio, 1); + regulator_disable(priv->supply); + + return 0; +} + +static int ej030na_get_modes(struct drm_panel *panel, + struct drm_connector *connector) +{ + struct ej030na *priv = to_ej030na(panel); + const struct ej030na_info *panel_info = priv->panel_info; + struct drm_display_mode *mode; + unsigned int i; + + for (i = 0; i < panel_info->num_modes; i++) { + mode = drm_mode_duplicate(connector->dev, + &panel_info->display_modes[i]); + if (!mode) + return -ENOMEM; + + drm_mode_set_name(mode); + + mode->type = DRM_MODE_TYPE_DRIVER; + if (panel_info->num_modes == 1) + mode->type |= DRM_MODE_TYPE_PREFERRED; + + drm_mode_probed_add(connector, mode); + } + + connector->display_info.bpc = 8; + connector->display_info.width_mm = panel_info->width_mm; + connector->display_info.height_mm = panel_info->height_mm; + + drm_display_info_set_bus_formats(&connector->display_info, + &panel_info->bus_format, 1); + connector->display_info.bus_flags = panel_info->bus_flags; + + return panel_info->num_modes; +} + +static const struct drm_panel_funcs ej030na_funcs = { + .prepare = ej030na_prepare, + .unprepare = ej030na_unprepare, + .get_modes = ej030na_get_modes, +}; + +static const struct regmap_config ej030na_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 0x5a, +}; + +static int ej030na_probe(struct spi_device *spi) +{ + struct device *dev = &spi->dev; + struct ej030na *priv; + int err; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->spi = spi; + spi_set_drvdata(spi, priv); + + priv->map = devm_regmap_init_spi(spi, &ej030na_regmap_config); + if (IS_ERR(priv->map)) { + dev_err(dev, "Unable to init regmap\n"); + return PTR_ERR(priv->map); + } + + priv->panel_info = of_device_get_match_data(dev); + if (!priv->panel_info) + return -EINVAL; + + priv->supply = devm_regulator_get(dev, "power"); + if (IS_ERR(priv->supply)) { + dev_err(dev, "Failed to get power supply\n"); + return PTR_ERR(priv->supply); + } + + priv->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); + if (IS_ERR(priv->reset_gpio)) { + dev_err(dev, "Failed to get reset GPIO\n"); + return PTR_ERR(priv->reset_gpio); + } + + drm_panel_init(&priv->panel, dev, &ej030na_funcs, + DRM_MODE_CONNECTOR_DPI); + + err = drm_panel_of_backlight(&priv->panel); + if (err) + return err; + + drm_panel_add(&priv->panel); + + return 0; +} + +static int ej030na_remove(struct spi_device *spi) +{ + struct ej030na *priv = spi_get_drvdata(spi); + + drm_panel_remove(&priv->panel); + drm_panel_disable(&priv->panel); + drm_panel_unprepare(&priv->panel); + + return 0; +} + +static const struct drm_display_mode ej030na_modes[] = { + { /* 60 Hz */ + .clock = 14400, + .hdisplay = 320, + .hsync_start = 320 + 10, + .hsync_end = 320 + 10 + 37, + .htotal = 320 + 10 + 37 + 33, + .vdisplay = 480, + .vsync_start = 480 + 102, + .vsync_end = 480 + 102 + 9 + 9, + .vtotal = 480 + 102 + 9 + 9, + .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, + }, + { /* 50 Hz */ + .clock = 12000, + .hdisplay = 320, + .hsync_start = 320 + 10, + .hsync_end = 320 + 10 + 37, + .htotal = 320 + 10 + 37 + 33, + .vdisplay = 480, + .vsync_start = 480 + 102, + .vsync_end = 480 + 102 + 9, + .vtotal = 480 + 102 + 9 + 9, + .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, + }, +}; + +static const struct ej030na_info ej030na_info = { + .display_modes = ej030na_modes, + .num_modes = ARRAY_SIZE(ej030na_modes), + .width_mm = 70, + .height_mm = 51, + .bus_format = MEDIA_BUS_FMT_RGB888_3X8_DELTA, + .bus_flags = DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE | DRM_BUS_FLAG_DE_LOW, +}; + +static const struct of_device_id ej030na_of_match[] = { + { .compatible = "innolux,ej030na", .data = &ej030na_info }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, ej030na_of_match); + +static struct spi_driver ej030na_driver = { + .driver = { + .name = "panel-innolux-ej030na", + .of_match_table = ej030na_of_match, + }, + .probe = ej030na_probe, + .remove = ej030na_remove, +}; +module_spi_driver(ej030na_driver); + +MODULE_AUTHOR("Paul Cercueil "); +MODULE_AUTHOR("Christophe Branchereau "); +MODULE_LICENSE("GPL v2"); -- 2.30.2 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 X-Spam-Level: X-Spam-Status: No, score=-10.9 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E126DC49EAB for ; Fri, 25 Jun 2021 12:11:07 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id AF24E6144B for ; Fri, 25 Jun 2021 12:11:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AF24E6144B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=crapouillou.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2FFE56ED8F; Fri, 25 Jun 2021 12:11:07 +0000 (UTC) Received: from aposti.net (aposti.net [89.234.176.197]) by gabe.freedesktop.org (Postfix) with ESMTPS id 01C586ED8F for ; Fri, 25 Jun 2021 12:11:04 +0000 (UTC) From: Paul Cercueil To: Thierry Reding , Sam Ravnborg , Rob Herring Subject: [PATCH 2/2] drm/panel: Add Innolux EJ030NA 3.0" 320x480 panel Date: Fri, 25 Jun 2021 13:10:45 +0100 Message-Id: <20210625121045.81711-2-paul@crapouillou.net> In-Reply-To: <20210625121045.81711-1-paul@crapouillou.net> References: <20210625121045.81711-1-paul@crapouillou.net> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Paul Cercueil , list@opendingux.net, Christophe Branchereau Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Christophe Branchereau Add support for the Innolux/Chimei EJ030NA 3.0" 320x480 TFT panel. This panel can be found in the LDKs, RS97 V2.1 and RG300 (non IPS) handheld gaming consoles. While being 320x480, it is actually a horizontal 4:3 panel with non-square pixels in delta arrangement. Signed-off-by: Christophe Branchereau Signed-off-by: Paul Cercueil --- drivers/gpu/drm/panel/Kconfig | 9 + drivers/gpu/drm/panel/Makefile | 1 + drivers/gpu/drm/panel/panel-innolux-ej030na.c | 289 ++++++++++++++++++ 3 files changed, 299 insertions(+) create mode 100644 drivers/gpu/drm/panel/panel-innolux-ej030na.c diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 09acd18b3592..bfc6c23b2509 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -134,6 +134,15 @@ config DRM_PANEL_ILITEK_ILI9881C Say Y if you want to enable support for panels based on the Ilitek ILI9881c controller. +config DRM_PANEL_INNOLUX_EJ030NA + tristate "Innolux EJ030NA 320x480 LCD panel" + depends on OF && SPI + select REGMAP_SPI + help + Say Y here to enable support for the Innolux/Chimei EJ030NA + 320x480 3.0" panel as found in the RS97 V2.1, RG300(non-ips) + and LDK handheld gaming consoles. + config DRM_PANEL_INNOLUX_P079ZCA tristate "Innolux P079ZCA panel" depends on OF diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index a350e0990d17..1b865e8ea7c9 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -12,6 +12,7 @@ obj-$(CONFIG_DRM_PANEL_FEIXIN_K101_IM2BA02) += panel-feixin-k101-im2ba02.o obj-$(CONFIG_DRM_PANEL_FEIYANG_FY07024DI26A30D) += panel-feiyang-fy07024di26a30d.o obj-$(CONFIG_DRM_PANEL_ILITEK_IL9322) += panel-ilitek-ili9322.o obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9881C) += panel-ilitek-ili9881c.o +obj-$(CONFIG_DRM_PANEL_INNOLUX_EJ030NA) += panel-innolux-ej030na.o obj-$(CONFIG_DRM_PANEL_INNOLUX_P079ZCA) += panel-innolux-p079zca.o obj-$(CONFIG_DRM_PANEL_JDI_LT070ME05000) += panel-jdi-lt070me05000.o obj-$(CONFIG_DRM_PANEL_KHADAS_TS050) += panel-khadas-ts050.o diff --git a/drivers/gpu/drm/panel/panel-innolux-ej030na.c b/drivers/gpu/drm/panel/panel-innolux-ej030na.c new file mode 100644 index 000000000000..4160b99ef544 --- /dev/null +++ b/drivers/gpu/drm/panel/panel-innolux-ej030na.c @@ -0,0 +1,289 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Innolux/Chimei EJ030NA TFT LCD panel driver + * + * Copyright (C) 2020, Paul Cercueil + * Copyright (C) 2020, Christophe Branchereau + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +struct ej030na_info { + const struct drm_display_mode *display_modes; + unsigned int num_modes; + u16 width_mm, height_mm; + u32 bus_format, bus_flags; +}; + +struct ej030na { + struct drm_panel panel; + struct spi_device *spi; + struct regmap *map; + + const struct ej030na_info *panel_info; + + struct regulator *supply; + struct gpio_desc *reset_gpio; +}; + +static inline struct ej030na *to_ej030na(struct drm_panel *panel) +{ + return container_of(panel, struct ej030na, panel); +} + +static const struct reg_sequence ej030na_init_sequence[] = { + { 0x05, 0x1e }, + { 0x05, 0x5c }, + { 0x02, 0x14 }, + { 0x03, 0x40 }, + { 0x04, 0x07 }, + { 0x06, 0x12 }, + { 0x07, 0xd2 }, + { 0x0c, 0x06 }, + { 0x0d, 0x40 }, + { 0x0e, 0x40 }, + { 0x0f, 0x40 }, + { 0x10, 0x40 }, + { 0x11, 0x40 }, + { 0x2f, 0x40 }, + { 0x5a, 0x02 }, + + { 0x30, 0x07 }, + { 0x31, 0x57 }, + { 0x32, 0x53 }, + { 0x33, 0x77 }, + { 0x34, 0xb8 }, + { 0x35, 0xbd }, + { 0x36, 0xb8 }, + { 0x37, 0xe7 }, + { 0x38, 0x04 }, + { 0x39, 0xff }, + + { 0x40, 0x0b }, + { 0x41, 0xb8 }, + { 0x42, 0xab }, + { 0x43, 0xb9 }, + { 0x44, 0x6a }, + { 0x45, 0x56 }, + { 0x46, 0x61 }, + { 0x47, 0x08 }, + { 0x48, 0x0f }, + { 0x49, 0x0f }, + + { 0x2b, 0x01 }, +}; + +static int ej030na_prepare(struct drm_panel *panel) +{ + struct ej030na *priv = to_ej030na(panel); + struct device *dev = &priv->spi->dev; + int err; + + err = regulator_enable(priv->supply); + if (err) { + dev_err(dev, "Failed to enable power supply: %d\n", err); + return err; + } + + /* Reset the chip */ + gpiod_set_value_cansleep(priv->reset_gpio, 1); + usleep_range(50, 150); + gpiod_set_value_cansleep(priv->reset_gpio, 0); + usleep_range(50, 150); + + err = regmap_multi_reg_write(priv->map, ej030na_init_sequence, + ARRAY_SIZE(ej030na_init_sequence)); + if (err) { + dev_err(dev, "Failed to init registers: %d\n", err); + goto err_disable_regulator; + } + + msleep(120); + + return 0; + +err_disable_regulator: + regulator_disable(priv->supply); + return err; +} + +static int ej030na_unprepare(struct drm_panel *panel) +{ + struct ej030na *priv = to_ej030na(panel); + + gpiod_set_value_cansleep(priv->reset_gpio, 1); + regulator_disable(priv->supply); + + return 0; +} + +static int ej030na_get_modes(struct drm_panel *panel, + struct drm_connector *connector) +{ + struct ej030na *priv = to_ej030na(panel); + const struct ej030na_info *panel_info = priv->panel_info; + struct drm_display_mode *mode; + unsigned int i; + + for (i = 0; i < panel_info->num_modes; i++) { + mode = drm_mode_duplicate(connector->dev, + &panel_info->display_modes[i]); + if (!mode) + return -ENOMEM; + + drm_mode_set_name(mode); + + mode->type = DRM_MODE_TYPE_DRIVER; + if (panel_info->num_modes == 1) + mode->type |= DRM_MODE_TYPE_PREFERRED; + + drm_mode_probed_add(connector, mode); + } + + connector->display_info.bpc = 8; + connector->display_info.width_mm = panel_info->width_mm; + connector->display_info.height_mm = panel_info->height_mm; + + drm_display_info_set_bus_formats(&connector->display_info, + &panel_info->bus_format, 1); + connector->display_info.bus_flags = panel_info->bus_flags; + + return panel_info->num_modes; +} + +static const struct drm_panel_funcs ej030na_funcs = { + .prepare = ej030na_prepare, + .unprepare = ej030na_unprepare, + .get_modes = ej030na_get_modes, +}; + +static const struct regmap_config ej030na_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 0x5a, +}; + +static int ej030na_probe(struct spi_device *spi) +{ + struct device *dev = &spi->dev; + struct ej030na *priv; + int err; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->spi = spi; + spi_set_drvdata(spi, priv); + + priv->map = devm_regmap_init_spi(spi, &ej030na_regmap_config); + if (IS_ERR(priv->map)) { + dev_err(dev, "Unable to init regmap\n"); + return PTR_ERR(priv->map); + } + + priv->panel_info = of_device_get_match_data(dev); + if (!priv->panel_info) + return -EINVAL; + + priv->supply = devm_regulator_get(dev, "power"); + if (IS_ERR(priv->supply)) { + dev_err(dev, "Failed to get power supply\n"); + return PTR_ERR(priv->supply); + } + + priv->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); + if (IS_ERR(priv->reset_gpio)) { + dev_err(dev, "Failed to get reset GPIO\n"); + return PTR_ERR(priv->reset_gpio); + } + + drm_panel_init(&priv->panel, dev, &ej030na_funcs, + DRM_MODE_CONNECTOR_DPI); + + err = drm_panel_of_backlight(&priv->panel); + if (err) + return err; + + drm_panel_add(&priv->panel); + + return 0; +} + +static int ej030na_remove(struct spi_device *spi) +{ + struct ej030na *priv = spi_get_drvdata(spi); + + drm_panel_remove(&priv->panel); + drm_panel_disable(&priv->panel); + drm_panel_unprepare(&priv->panel); + + return 0; +} + +static const struct drm_display_mode ej030na_modes[] = { + { /* 60 Hz */ + .clock = 14400, + .hdisplay = 320, + .hsync_start = 320 + 10, + .hsync_end = 320 + 10 + 37, + .htotal = 320 + 10 + 37 + 33, + .vdisplay = 480, + .vsync_start = 480 + 102, + .vsync_end = 480 + 102 + 9 + 9, + .vtotal = 480 + 102 + 9 + 9, + .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, + }, + { /* 50 Hz */ + .clock = 12000, + .hdisplay = 320, + .hsync_start = 320 + 10, + .hsync_end = 320 + 10 + 37, + .htotal = 320 + 10 + 37 + 33, + .vdisplay = 480, + .vsync_start = 480 + 102, + .vsync_end = 480 + 102 + 9, + .vtotal = 480 + 102 + 9 + 9, + .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, + }, +}; + +static const struct ej030na_info ej030na_info = { + .display_modes = ej030na_modes, + .num_modes = ARRAY_SIZE(ej030na_modes), + .width_mm = 70, + .height_mm = 51, + .bus_format = MEDIA_BUS_FMT_RGB888_3X8_DELTA, + .bus_flags = DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE | DRM_BUS_FLAG_DE_LOW, +}; + +static const struct of_device_id ej030na_of_match[] = { + { .compatible = "innolux,ej030na", .data = &ej030na_info }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, ej030na_of_match); + +static struct spi_driver ej030na_driver = { + .driver = { + .name = "panel-innolux-ej030na", + .of_match_table = ej030na_of_match, + }, + .probe = ej030na_probe, + .remove = ej030na_remove, +}; +module_spi_driver(ej030na_driver); + +MODULE_AUTHOR("Paul Cercueil "); +MODULE_AUTHOR("Christophe Branchereau "); +MODULE_LICENSE("GPL v2"); -- 2.30.2