drm/panel: Add Ronbo RB070D30 panel (979a1bb6) · Commits · 戴 / test

drivers/gpu/drm/panel/Kconfig

+9 −0

Original line number	Diff line number	Diff line
		@@ -149,6 +149,15 @@ config DRM_PANEL_RAYDIUM_RM68200
		Say Y here if you want to enable support for Raydium RM68200
		720x1280 DSI video mode panel.

		config DRM_PANEL_RONBO_RB070D30
		tristate "Ronbo Electronics RB070D30 panel"
		depends on OF
		depends on DRM_MIPI_DSI
		depends on BACKLIGHT_CLASS_DEVICE
		help
		Say Y here if you want to enable support for Ronbo Electronics
		RB070D30 1024x600 DSI panel.

		config DRM_PANEL_SAMSUNG_S6D16D0
		tristate "Samsung S6D16D0 DSI video mode panel"
		depends on OF

drivers/gpu/drm/panel/Makefile

+1 −0

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		@@ -13,6 +13,7 @@ obj-$(CONFIG_DRM_PANEL_ORISETECH_OTM8009A) += panel-orisetech-otm8009a.o
		obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o
		obj-$(CONFIG_DRM_PANEL_RASPBERRYPI_TOUCHSCREEN) += panel-raspberrypi-touchscreen.o
		obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM68200) += panel-raydium-rm68200.o
		obj-$(CONFIG_DRM_PANEL_RONBO_RB070D30) += panel-ronbo-rb070d30.o
		obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o
		obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6D16D0) += panel-samsung-s6d16d0.o
		obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E3HA2) += panel-samsung-s6e3ha2.o

drivers/gpu/drm/panel/panel-ronbo-rb070d30.c

0 → 100644

+258 −0

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		// SPDX-License-Identifier: GPL-2.0+
		/*
		* Copyright (C) 2018-2019, Bridge Systems BV
		* Copyright (C) 2018-2019, Bootlin
		* Copyright (C) 2017, Free Electrons
		*
		* This file based on panel-ilitek-ili9881c.c
		*/

		#include <linux/backlight.h>
		#include <linux/delay.h>
		#include <linux/device.h>
		#include <linux/err.h>
		#include <linux/errno.h>
		#include <linux/fb.h>
		#include <linux/kernel.h>
		#include <linux/media-bus-format.h>
		#include <linux/module.h>

		#include <linux/gpio/consumer.h>
		#include <linux/regulator/consumer.h>

		#include <drm/drm_connector.h>
		#include <drm/drm_mipi_dsi.h>
		#include <drm/drm_modes.h>
		#include <drm/drm_panel.h>
		#include <drm/drm_print.h>

		struct rb070d30_panel {
		struct drm_panel panel;
		struct mipi_dsi_device *dsi;
		struct backlight_device *backlight;
		struct regulator *supply;

		struct {
		struct gpio_desc *power;
		struct gpio_desc *reset;
		struct gpio_desc *updn;
		struct gpio_desc *shlr;
		} gpios;
		};

		static inline struct rb070d30_panel panel_to_rb070d30_panel(struct drm_panel panel)
		{
		return container_of(panel, struct rb070d30_panel, panel);
		}

		static int rb070d30_panel_prepare(struct drm_panel *panel)
		{
		struct rb070d30_panel *ctx = panel_to_rb070d30_panel(panel);
		int ret;

		ret = regulator_enable(ctx->supply);
		if (ret < 0) {
		DRM_DEV_ERROR(&ctx->dsi->dev, "Failed to enable supply: %d\n", ret);
		return ret;
		}

		msleep(20);
		gpiod_set_value(ctx->gpios.power, 1);
		msleep(20);
		gpiod_set_value(ctx->gpios.reset, 1);
		msleep(20);
		return 0;
		}

		static int rb070d30_panel_unprepare(struct drm_panel *panel)
		{
		struct rb070d30_panel *ctx = panel_to_rb070d30_panel(panel);

		gpiod_set_value(ctx->gpios.reset, 0);
		gpiod_set_value(ctx->gpios.power, 0);
		regulator_disable(ctx->supply);

		return 0;
		}

		static int rb070d30_panel_enable(struct drm_panel *panel)
		{
		struct rb070d30_panel *ctx = panel_to_rb070d30_panel(panel);
		int ret;

		ret = mipi_dsi_dcs_exit_sleep_mode(ctx->dsi);
		if (ret)
		return ret;

		ret = backlight_enable(ctx->backlight);
		if (ret)
		goto out;

		return 0;

		out:
		mipi_dsi_dcs_enter_sleep_mode(ctx->dsi);
		return ret;
		}

		static int rb070d30_panel_disable(struct drm_panel *panel)
		{
		struct rb070d30_panel *ctx = panel_to_rb070d30_panel(panel);

		backlight_disable(ctx->backlight);
		return mipi_dsi_dcs_enter_sleep_mode(ctx->dsi);
		}

		/* Default timings */
		static const struct drm_display_mode default_mode = {
		.clock = 51206,
		.hdisplay = 1024,
		.hsync_start = 1024 + 160,
		.hsync_end = 1024 + 160 + 80,
		.htotal = 1024 + 160 + 80 + 80,
		.vdisplay = 600,
		.vsync_start = 600 + 12,
		.vsync_end = 600 + 12 + 10,
		.vtotal = 600 + 12 + 10 + 13,
		.vrefresh = 60,

		.width_mm = 154,
		.height_mm = 85,
		};

		static int rb070d30_panel_get_modes(struct drm_panel *panel)
		{
		struct drm_connector *connector = panel->connector;
		struct rb070d30_panel *ctx = panel_to_rb070d30_panel(panel);
		struct drm_display_mode *mode;
		static const u32 bus_format = MEDIA_BUS_FMT_RGB888_1X24;

		mode = drm_mode_duplicate(panel->drm, &default_mode);
		if (!mode) {
		DRM_DEV_ERROR(&ctx->dsi->dev,
		"Failed to add mode " DRM_MODE_FMT "\n",
		DRM_MODE_ARG(&default_mode));
		return -EINVAL;
		}

		drm_mode_set_name(mode);

		mode->type = DRM_MODE_TYPE_DRIVER \| DRM_MODE_TYPE_PREFERRED;
		drm_mode_probed_add(connector, mode);

		panel->connector->display_info.bpc = 8;
		panel->connector->display_info.width_mm = mode->width_mm;
		panel->connector->display_info.height_mm = mode->height_mm;
		drm_display_info_set_bus_formats(&connector->display_info,
		&bus_format, 1);

		return 1;
		}

		static const struct drm_panel_funcs rb070d30_panel_funcs = {
		.get_modes = rb070d30_panel_get_modes,
		.prepare = rb070d30_panel_prepare,
		.enable = rb070d30_panel_enable,
		.disable = rb070d30_panel_disable,
		.unprepare = rb070d30_panel_unprepare,
		};

		static int rb070d30_panel_dsi_probe(struct mipi_dsi_device *dsi)
		{
		struct rb070d30_panel *ctx;
		int ret;

		ctx = devm_kzalloc(&dsi->dev, sizeof(*ctx), GFP_KERNEL);
		if (!ctx)
		return -ENOMEM;

		ctx->supply = devm_regulator_get(&dsi->dev, "vcc-lcd");
		if (IS_ERR(ctx->supply))
		return PTR_ERR(ctx->supply);

		mipi_dsi_set_drvdata(dsi, ctx);
		ctx->dsi = dsi;

		drm_panel_init(&ctx->panel);
		ctx->panel.dev = &dsi->dev;
		ctx->panel.funcs = &rb070d30_panel_funcs;

		ctx->gpios.reset = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_LOW);
		if (IS_ERR(ctx->gpios.reset)) {
		DRM_DEV_ERROR(&dsi->dev, "Couldn't get our reset GPIO\n");
		return PTR_ERR(ctx->gpios.reset);
		}

		ctx->gpios.power = devm_gpiod_get(&dsi->dev, "power", GPIOD_OUT_LOW);
		if (IS_ERR(ctx->gpios.power)) {
		DRM_DEV_ERROR(&dsi->dev, "Couldn't get our power GPIO\n");
		return PTR_ERR(ctx->gpios.power);
		}

		/*
		* We don't change the state of that GPIO later on but we need
		* to force it into a low state.
		*/
		ctx->gpios.updn = devm_gpiod_get(&dsi->dev, "updn", GPIOD_OUT_LOW);
		if (IS_ERR(ctx->gpios.updn)) {
		DRM_DEV_ERROR(&dsi->dev, "Couldn't get our updn GPIO\n");
		return PTR_ERR(ctx->gpios.updn);
		}

		/*
		* We don't change the state of that GPIO later on but we need
		* to force it into a low state.
		*/
		ctx->gpios.shlr = devm_gpiod_get(&dsi->dev, "shlr", GPIOD_OUT_LOW);
		if (IS_ERR(ctx->gpios.shlr)) {
		DRM_DEV_ERROR(&dsi->dev, "Couldn't get our shlr GPIO\n");
		return PTR_ERR(ctx->gpios.shlr);
		}

		ctx->backlight = devm_of_find_backlight(&dsi->dev);
		if (IS_ERR(ctx->backlight)) {
		DRM_DEV_ERROR(&dsi->dev, "Couldn't get our backlight\n");
		return PTR_ERR(ctx->backlight);
		}

		ret = drm_panel_add(&ctx->panel);
		if (ret < 0)
		return ret;

		dsi->mode_flags = MIPI_DSI_MODE_VIDEO \| MIPI_DSI_MODE_VIDEO_BURST \| MIPI_DSI_MODE_LPM;
		dsi->format = MIPI_DSI_FMT_RGB888;
		dsi->lanes = 4;

		return mipi_dsi_attach(dsi);
		}

		static int rb070d30_panel_dsi_remove(struct mipi_dsi_device *dsi)
		{
		struct rb070d30_panel *ctx = mipi_dsi_get_drvdata(dsi);

		mipi_dsi_detach(dsi);
		drm_panel_remove(&ctx->panel);

		return 0;
		}

		static const struct of_device_id rb070d30_panel_of_match[] = {
		{ .compatible = "ronbo,rb070d30" },
		{ /* sentinel */ },
		};
		MODULE_DEVICE_TABLE(of, rb070d30_panel_of_match);

		static struct mipi_dsi_driver rb070d30_panel_driver = {
		.probe = rb070d30_panel_dsi_probe,
		.remove = rb070d30_panel_dsi_remove,
		.driver = {
		.name = "panel-ronbo-rb070d30",
		.of_match_table = rb070d30_panel_of_match,
		},
		};
		module_mipi_dsi_driver(rb070d30_panel_driver);

		MODULE_AUTHOR("Boris Brezillon <boris.brezillon@bootlin.com>");
		MODULE_AUTHOR("Konstantin Sudakov <k.sudakov@integrasources.com>");
		MODULE_DESCRIPTION("Ronbo RB070D30 Panel Driver");
		MODULE_LICENSE("GPL");

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