drm/panel/samsung-sofef00: Add panel for OnePlus 6/T devices (5933baa3) · Commits · 戴 / test

drivers/gpu/drm/panel/Kconfig

+12 −0

Original line number	Diff line number	Diff line
		@@ -371,6 +371,18 @@ config DRM_PANEL_SAMSUNG_S6E8AA0
		select DRM_MIPI_DSI
		select VIDEOMODE_HELPERS

		config DRM_PANEL_SAMSUNG_SOFEF00
		tristate "Samsung sofef00/s6e3fc2x01 OnePlus 6/6T DSI cmd mode panels"
		depends on OF
		depends on DRM_MIPI_DSI
		depends on BACKLIGHT_CLASS_DEVICE
		select VIDEOMODE_HELPERS
		help
		Say Y or M here if you want to enable support for the Samsung AMOLED
		command mode panels found in the OnePlus 6/6T smartphones.

		The panels are 2280x1080@60Hz and 2340x1080@60Hz respectively

		config DRM_PANEL_SEIKO_43WVF1G
		tristate "Seiko 43WVF1G panel"
		depends on OF

drivers/gpu/drm/panel/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -39,6 +39,7 @@ obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E63M0_SPI) += panel-samsung-s6e63m0-spi.o
		obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E63M0_DSI) += panel-samsung-s6e63m0-dsi.o
		obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E88A0_AMS452EF01) += panel-samsung-s6e88a0-ams452ef01.o
		obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0) += panel-samsung-s6e8aa0.o
		obj-$(CONFIG_DRM_PANEL_SAMSUNG_SOFEF00) += panel-samsung-sofef00.o
		obj-$(CONFIG_DRM_PANEL_SEIKO_43WVF1G) += panel-seiko-43wvf1g.o
		obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o
		obj-$(CONFIG_DRM_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o

drivers/gpu/drm/panel/panel-samsung-sofef00.c

0 → 100644

+351 −0

Original line number	Diff line number	Diff line
		// SPDX-License-Identifier: GPL-2.0-only
		/* Copyright (c) 2020 Caleb Connolly <caleb@connolly.tech>
		* Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree:
		* Copyright (c) 2020, The Linux Foundation. All rights reserved.
		*/

		#include <linux/delay.h>
		#include <linux/gpio/consumer.h>
		#include <linux/module.h>
		#include <linux/of.h>
		#include <linux/of_device.h>
		#include <linux/regulator/consumer.h>
		#include <linux/swab.h>
		#include <linux/backlight.h>

		#include <video/mipi_display.h>

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

		struct sofef00_panel {
		struct drm_panel panel;
		struct mipi_dsi_device *dsi;
		struct regulator *supply;
		struct gpio_desc *reset_gpio;
		const struct drm_display_mode *mode;
		bool prepared;
		};

		static inline
		struct sofef00_panel to_sofef00_panel(struct drm_panel panel)
		{
		return container_of(panel, struct sofef00_panel, panel);
		}

		#define dsi_dcs_write_seq(dsi, seq...) do { \
		static const u8 d[] = { seq }; \
		int ret; \
		ret = mipi_dsi_dcs_write_buffer(dsi, d, ARRAY_SIZE(d)); \
		if (ret < 0) \
		return ret; \
		} while (0)

		static void sofef00_panel_reset(struct sofef00_panel *ctx)
		{
		gpiod_set_value_cansleep(ctx->reset_gpio, 0);
		usleep_range(5000, 6000);
		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
		usleep_range(2000, 3000);
		gpiod_set_value_cansleep(ctx->reset_gpio, 0);
		usleep_range(12000, 13000);
		}

		static int sofef00_panel_on(struct sofef00_panel *ctx)
		{
		struct mipi_dsi_device *dsi = ctx->dsi;
		struct device *dev = &dsi->dev;
		int ret;

		dsi->mode_flags \|= MIPI_DSI_MODE_LPM;

		ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
		if (ret < 0) {
		dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
		return ret;
		}
		usleep_range(10000, 11000);

		dsi_dcs_write_seq(dsi, 0xf0, 0x5a, 0x5a);

		ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
		if (ret < 0) {
		dev_err(dev, "Failed to set tear on: %d\n", ret);
		return ret;
		}

		dsi_dcs_write_seq(dsi, 0xf0, 0xa5, 0xa5);
		dsi_dcs_write_seq(dsi, 0xf0, 0x5a, 0x5a);
		dsi_dcs_write_seq(dsi, 0xb0, 0x07);
		dsi_dcs_write_seq(dsi, 0xb6, 0x12);
		dsi_dcs_write_seq(dsi, 0xf0, 0xa5, 0xa5);
		dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
		dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_POWER_SAVE, 0x00);

		ret = mipi_dsi_dcs_set_display_on(dsi);
		if (ret < 0) {
		dev_err(dev, "Failed to set display on: %d\n", ret);
		return ret;
		}

		return 0;
		}

		static int sofef00_panel_off(struct sofef00_panel *ctx)
		{
		struct mipi_dsi_device *dsi = ctx->dsi;
		struct device *dev = &dsi->dev;
		int ret;

		dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;

		ret = mipi_dsi_dcs_set_display_off(dsi);
		if (ret < 0) {
		dev_err(dev, "Failed to set display off: %d\n", ret);
		return ret;
		}
		msleep(40);

		ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
		if (ret < 0) {
		dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
		return ret;
		}
		msleep(160);

		return 0;
		}

		static int sofef00_panel_prepare(struct drm_panel *panel)
		{
		struct sofef00_panel *ctx = to_sofef00_panel(panel);
		struct device *dev = &ctx->dsi->dev;
		int ret;

		if (ctx->prepared)
		return 0;

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

		sofef00_panel_reset(ctx);

		ret = sofef00_panel_on(ctx);
		if (ret < 0) {
		dev_err(dev, "Failed to initialize panel: %d\n", ret);
		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
		return ret;
		}

		ctx->prepared = true;
		return 0;
		}

		static int sofef00_panel_unprepare(struct drm_panel *panel)
		{
		struct sofef00_panel *ctx = to_sofef00_panel(panel);
		struct device *dev = &ctx->dsi->dev;
		int ret;

		if (!ctx->prepared)
		return 0;

		ret = sofef00_panel_off(ctx);
		if (ret < 0)
		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);

		regulator_disable(ctx->supply);

		ctx->prepared = false;
		return 0;
		}

		static const struct drm_display_mode enchilada_panel_mode = {
		.clock = (1080 + 112 + 16 + 36) * (2280 + 36 + 8 + 12) * 60 / 1000,
		.hdisplay = 1080,
		.hsync_start = 1080 + 112,
		.hsync_end = 1080 + 112 + 16,
		.htotal = 1080 + 112 + 16 + 36,
		.vdisplay = 2280,
		.vsync_start = 2280 + 36,
		.vsync_end = 2280 + 36 + 8,
		.vtotal = 2280 + 36 + 8 + 12,
		.width_mm = 68,
		.height_mm = 145,
		};

		static const struct drm_display_mode fajita_panel_mode = {
		.clock = (1080 + 72 + 16 + 36) * (2340 + 32 + 4 + 18) * 60 / 1000,
		.hdisplay = 1080,
		.hsync_start = 1080 + 72,
		.hsync_end = 1080 + 72 + 16,
		.htotal = 1080 + 72 + 16 + 36,
		.vdisplay = 2340,
		.vsync_start = 2340 + 32,
		.vsync_end = 2340 + 32 + 4,
		.vtotal = 2340 + 32 + 4 + 18,
		.width_mm = 68,
		.height_mm = 145,
		};

		static int sofef00_panel_get_modes(struct drm_panel panel, struct drm_connector connector)
		{
		struct drm_display_mode *mode;
		struct sofef00_panel *ctx = to_sofef00_panel(panel);

		mode = drm_mode_duplicate(connector->dev, ctx->mode);
		if (!mode)
		return -ENOMEM;

		drm_mode_set_name(mode);

		mode->type = DRM_MODE_TYPE_DRIVER \| DRM_MODE_TYPE_PREFERRED;
		connector->display_info.width_mm = mode->width_mm;
		connector->display_info.height_mm = mode->height_mm;
		drm_mode_probed_add(connector, mode);

		return 1;
		}

		static const struct drm_panel_funcs sofef00_panel_panel_funcs = {
		.prepare = sofef00_panel_prepare,
		.unprepare = sofef00_panel_unprepare,
		.get_modes = sofef00_panel_get_modes,
		};

		static int sofef00_panel_bl_update_status(struct backlight_device *bl)
		{
		struct mipi_dsi_device *dsi = bl_get_data(bl);
		int err;
		u16 brightness;

		brightness = (u16)backlight_get_brightness(bl);
		// This panel needs the high and low bytes swapped for the brightness value
		brightness = __swab16(brightness);

		err = mipi_dsi_dcs_set_display_brightness(dsi, brightness);
		if (err < 0)
		return err;

		return 0;
		}

		static const struct backlight_ops sofef00_panel_bl_ops = {
		.update_status = sofef00_panel_bl_update_status,
		};

		static struct backlight_device *
		sofef00_create_backlight(struct mipi_dsi_device *dsi)
		{
		struct device *dev = &dsi->dev;
		const struct backlight_properties props = {
		.type = BACKLIGHT_PLATFORM,
		.brightness = 1023,
		.max_brightness = 1023,
		};

		return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
		&sofef00_panel_bl_ops, &props);
		}

		static int sofef00_panel_probe(struct mipi_dsi_device *dsi)
		{
		struct device *dev = &dsi->dev;
		struct sofef00_panel *ctx;
		int ret;

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

		ctx->mode = of_device_get_match_data(dev);

		if (!ctx->mode) {
		dev_err(dev, "Missing device mode\n");
		return -ENODEV;
		}

		ctx->supply = devm_regulator_get(dev, "vddio");
		if (IS_ERR(ctx->supply)) {
		ret = PTR_ERR(ctx->supply);
		dev_err(dev, "Failed to get vddio regulator: %d\n", ret);
		return ret;
		}

		ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
		if (IS_ERR(ctx->reset_gpio)) {
		ret = PTR_ERR(ctx->reset_gpio);
		dev_warn(dev, "Failed to get reset-gpios: %d\n", ret);
		return ret;
		}

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

		dsi->lanes = 4;
		dsi->format = MIPI_DSI_FMT_RGB888;

		drm_panel_init(&ctx->panel, dev, &sofef00_panel_panel_funcs,
		DRM_MODE_CONNECTOR_DSI);

		ctx->panel.backlight = sofef00_create_backlight(dsi);
		if (IS_ERR(ctx->panel.backlight))
		return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
		"Failed to create backlight\n");

		drm_panel_add(&ctx->panel);

		ret = mipi_dsi_attach(dsi);
		if (ret < 0) {
		dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
		return ret;
		}

		return 0;
		}

		static int sofef00_panel_remove(struct mipi_dsi_device *dsi)
		{
		struct sofef00_panel *ctx = mipi_dsi_get_drvdata(dsi);
		int ret;

		ret = mipi_dsi_detach(dsi);
		if (ret < 0)
		dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);

		drm_panel_remove(&ctx->panel);

		return 0;
		}

		static const struct of_device_id sofef00_panel_of_match[] = {
		{ // OnePlus 6 / enchilada
		.compatible = "samsung,sofef00",
		.data = &enchilada_panel_mode,
		},
		{ // OnePlus 6T / fajita
		.compatible = "samsung,s6e3fc2x01",
		.data = &fajita_panel_mode,
		},
		{ /* sentinel */ }
		};
		MODULE_DEVICE_TABLE(of, sofef00_panel_of_match);

		static struct mipi_dsi_driver sofef00_panel_driver = {
		.probe = sofef00_panel_probe,
		.remove = sofef00_panel_remove,
		.driver = {
		.name = "panel-oneplus6",
		.of_match_table = sofef00_panel_of_match,
		},
		};

		module_mipi_dsi_driver(sofef00_panel_driver);

		MODULE_AUTHOR("Caleb Connolly <caleb@connolly.tech>");
		MODULE_DESCRIPTION("DRM driver for Samsung AMOLED DSI panels found in OnePlus 6/6T phones");
		MODULE_LICENSE("GPL v2");

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