Commit 7220a310 authored by Barnabás Czémán's avatar Barnabás Czémán Committed by Neil Armstrong
Browse files

drivers: gpu: drm: panel: Add BOE TD4320 



Add driver for BOE TD4320 DSI panel, used in Xiaomi Redmi Note 7
mobile phone.

Signed-off-by: default avatarBarnabás Czémán <barnabas.czeman@mainlining.org>
Reviewed-by: default avatarNeil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250430-lavender-panel-v3-2-7625e62d62b2@mainlining.org


Signed-off-by: default avatarNeil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250430-lavender-panel-v3-2-7625e62d62b2@mainlining.org
parent af28dfc3

drivers/gpu/drm/panel/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -67,6 +67,15 @@ config DRM_PANEL_BOE_HIMAX8279D 
	  24 bit RGB per pixel. It provides a MIPI DSI interface to

	  the host and has a built-in LED backlight.



config DRM_PANEL_BOE_TD4320

	tristate "BOE TD4320 DSI 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 BOE TD4320 1080x2340

	  video mode panel found in Xiaomi Redmi Note 7 smartphones.



config DRM_PANEL_BOE_TH101MB31UIG002_28A

	tristate "Boe TH101MB31UIG002-28A panel"

	depends on OF

drivers/gpu/drm/panel/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -5,6 +5,7 @@ obj-$(CONFIG_DRM_PANEL_ASUS_Z00T_TM5P5_NT35596) += panel-asus-z00t-tm5p5-n35596. 
obj-$(CONFIG_DRM_PANEL_AUO_A030JTN01) += panel-auo-a030jtn01.o

obj-$(CONFIG_DRM_PANEL_BOE_BF060Y8M_AJ0) += panel-boe-bf060y8m-aj0.o

obj-$(CONFIG_DRM_PANEL_BOE_HIMAX8279D) += panel-boe-himax8279d.o

obj-$(CONFIG_DRM_PANEL_BOE_TD4320) += panel-boe-td4320.o

obj-$(CONFIG_DRM_PANEL_BOE_TH101MB31UIG002_28A) += panel-boe-th101mb31ig002-28a.o

obj-$(CONFIG_DRM_PANEL_BOE_TV101WUM_LL2) += panel-boe-tv101wum-ll2.o

obj-$(CONFIG_DRM_PANEL_BOE_TV101WUM_NL6) += panel-boe-tv101wum-nl6.o

drivers/gpu/drm/panel/panel-boe-td4320.c

0 → 100644
+247 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

// Copyright (c) 2024 Barnabas Czeman <barnabas.czeman@mainlining.org>

// Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree:

//   Copyright (c) 2013, The Linux Foundation. All rights reserved.



#include <linux/delay.h>

#include <linux/gpio/consumer.h>

#include <linux/mod_devicetable.h>

#include <linux/module.h>

#include <linux/regulator/consumer.h>



#include <video/mipi_display.h>



#include <drm/drm_mipi_dsi.h>

#include <drm/drm_modes.h>

#include <drm/drm_panel.h>

#include <drm/drm_probe_helper.h>



struct boe_td4320 {

	struct drm_panel panel;

	struct mipi_dsi_device *dsi;

	struct regulator_bulk_data *supplies;

	struct gpio_desc *reset_gpio;

};



static const struct regulator_bulk_data boe_td4320_supplies[] = {

	{ .supply = "iovcc" },

	{ .supply = "vsn" },

	{ .supply = "vsp" },

};



static inline struct boe_td4320 *to_boe_td4320(struct drm_panel *panel)

{

	return container_of(panel, struct boe_td4320, panel);

}



static void boe_td4320_reset(struct boe_td4320 *ctx)

{

	gpiod_set_value_cansleep(ctx->reset_gpio, 0);

	usleep_range(1000, 2000);

	gpiod_set_value_cansleep(ctx->reset_gpio, 1);

	usleep_range(5000, 6000);

	gpiod_set_value_cansleep(ctx->reset_gpio, 0);

	msleep(30);

}



static int boe_td4320_on(struct boe_td4320 *ctx)

{

	struct mipi_dsi_multi_context dsi_ctx = { .dsi = ctx->dsi };



	ctx->dsi->mode_flags |= MIPI_DSI_MODE_LPM;



	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x04);

	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xd6, 0x00);

	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb8,

					 0x19, 0x55, 0x00, 0xbe, 0x00, 0x00,

					 0x00);

	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb9,

					 0x4d, 0x55, 0x05, 0xe6, 0x00, 0x02,

					 0x03);

	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xba,

					 0x9b, 0x5b, 0x07, 0xe6, 0x00, 0x13,

					 0x00);

	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xf9,

					 0x44, 0x3f, 0x00, 0x8d, 0xbf);

	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xce,

					 0x5d, 0x00, 0x0f, 0x1f, 0x2f, 0x3f,

					 0x4f, 0x5f, 0x6f, 0x7f, 0x8f, 0x9f,

					 0xaf, 0xbf, 0xcf, 0xdf, 0xef, 0xff,

					 0x04, 0x00, 0x02, 0x02, 0x42, 0x01,

					 0x69, 0x5a, 0x40, 0x40, 0x00, 0x00,

					 0x04, 0xfa, 0x00);

	mipi_dsi_dcs_set_display_brightness_multi(&dsi_ctx, 0x00b8);

	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_CONTROL_DISPLAY,

				     0x2c);

	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_POWER_SAVE, 0x00);

	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb0, 0x03);

	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x11, 0x00);

	mipi_dsi_msleep(&dsi_ctx, 96);

	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x29, 0x00);

	mipi_dsi_msleep(&dsi_ctx, 20);



	return dsi_ctx.accum_err;

}



static int boe_td4320_off(struct boe_td4320 *ctx)

{

	struct mipi_dsi_multi_context dsi_ctx = { .dsi = ctx->dsi };



	ctx->dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;



	mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);

	mipi_dsi_msleep(&dsi_ctx, 20);

	mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);

	mipi_dsi_msleep(&dsi_ctx, 120);



	return dsi_ctx.accum_err;

}



static int boe_td4320_prepare(struct drm_panel *panel)

{

	struct boe_td4320 *ctx = to_boe_td4320(panel);

	struct device *dev = &ctx->dsi->dev;

	int ret;



	ret = regulator_bulk_enable(ARRAY_SIZE(boe_td4320_supplies), ctx->supplies);

	if (ret < 0) {

		dev_err(dev, "Failed to enable regulators: %d\n", ret);

		return ret;

	}



	boe_td4320_reset(ctx);



	ret = boe_td4320_on(ctx);

	if (ret < 0) {

		dev_err(dev, "Failed to initialize panel: %d\n", ret);

		gpiod_set_value_cansleep(ctx->reset_gpio, 1);

		regulator_bulk_disable(ARRAY_SIZE(boe_td4320_supplies), ctx->supplies);

		return ret;

	}



	return 0;

}



static int boe_td4320_unprepare(struct drm_panel *panel)

{

	struct boe_td4320 *ctx = to_boe_td4320(panel);

	struct device *dev = &ctx->dsi->dev;

	int ret;



	ret = boe_td4320_off(ctx);

	if (ret < 0)

		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);



	gpiod_set_value_cansleep(ctx->reset_gpio, 1);

	regulator_bulk_disable(ARRAY_SIZE(boe_td4320_supplies), ctx->supplies);



	return 0;

}



static const struct drm_display_mode boe_td4320_mode = {

	.clock = (1080 + 86 + 2 + 100) * (2340 + 4 + 4 + 60) * 60 / 1000,

	.hdisplay = 1080,

	.hsync_start = 1080 + 86,

	.hsync_end = 1080 + 86 + 2,

	.htotal = 1080 + 86 + 2 + 100,

	.vdisplay = 2340,

	.vsync_start = 2340 + 4,

	.vsync_end = 2340 + 4 + 4,

	.vtotal = 2340 + 4 + 4 + 60,

	.width_mm = 67,

	.height_mm = 145,

	.type = DRM_MODE_TYPE_DRIVER,

};



static int boe_td4320_get_modes(struct drm_panel *panel,

				struct drm_connector *connector)

{

	return drm_connector_helper_get_modes_fixed(connector, &boe_td4320_mode);

}



static const struct drm_panel_funcs boe_td4320_panel_funcs = {

	.prepare = boe_td4320_prepare,

	.unprepare = boe_td4320_unprepare,

	.get_modes = boe_td4320_get_modes,

};



static int boe_td4320_probe(struct mipi_dsi_device *dsi)

{

	struct device *dev = &dsi->dev;

	struct boe_td4320 *ctx;

	int ret;



	ctx = devm_drm_panel_alloc(dev, struct boe_td4320, panel,

				   &boe_td4320_panel_funcs,

				   DRM_MODE_CONNECTOR_DSI);

	if (IS_ERR(ctx))

		return PTR_ERR(ctx);



	ret = devm_regulator_bulk_get_const(dev,

					    ARRAY_SIZE(boe_td4320_supplies),

					    boe_td4320_supplies,

					    &ctx->supplies);

	if (ret < 0)

		return ret;



	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);

	if (IS_ERR(ctx->reset_gpio))

		return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),

				     "Failed to get reset-gpios\n");



	ctx->dsi = dsi;

	mipi_dsi_set_drvdata(dsi, ctx);



	dsi->lanes = 4;

	dsi->format = MIPI_DSI_FMT_RGB888;

	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |

			  MIPI_DSI_CLOCK_NON_CONTINUOUS;



	ctx->panel.prepare_prev_first = true;



	ret = drm_panel_of_backlight(&ctx->panel);

	if (ret)

		return dev_err_probe(dev, ret, "Failed to get backlight\n");



	drm_panel_add(&ctx->panel);



	ret = mipi_dsi_attach(dsi);

	if (ret < 0) {

		drm_panel_remove(&ctx->panel);

		return dev_err_probe(dev, ret, "Failed to attach to DSI host\n");

	}



	return 0;

}



static void boe_td4320_remove(struct mipi_dsi_device *dsi)

{

	struct boe_td4320 *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);

}



static const struct of_device_id boe_td4320_of_match[] = {

	{ .compatible = "boe,td4320" },

	{ /* sentinel */ }

};

MODULE_DEVICE_TABLE(of, boe_td4320_of_match);



static struct mipi_dsi_driver boe_td4320_driver = {

	.probe = boe_td4320_probe,

	.remove = boe_td4320_remove,

	.driver = {

		.name = "panel-boe-td4320",

		.of_match_table = boe_td4320_of_match,

	},

};

module_mipi_dsi_driver(boe_td4320_driver);



MODULE_AUTHOR("Barnabas Czeman <barnabas.czeman@mainlining.org>");

MODULE_DESCRIPTION("DRM driver for boe td4320 fhdplus video mode dsi panel");

MODULE_LICENSE("GPL");