Commit aec8485f authored by Neil Armstrong's avatar Neil Armstrong
Browse files

drm/panel: add BOE tv101wum-ll2 panel driver 



Add support for the 1200x1920 BOE TV101WUM-LL2 DSI Display Panel found
in the Lenovo Smart Tab M10 tablet. The controller is unknown.

Reviewed-by: default avatarDouglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20240828-topic-sdm450-upstream-tbx605f-panel-v3-2-b792f93e1d6b@linaro.org


Signed-off-by: default avatarNeil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240828-topic-sdm450-upstream-tbx605f-panel-v3-2-b792f93e1d6b@linaro.org
parent 1da04eac

drivers/gpu/drm/panel/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -87,6 +87,15 @@ config DRM_PANEL_BOE_TV101WUM_NL6 
	  Say Y here if you want to support for BOE TV101WUM and AUO KD101N80

	  45NA WUXGA PANEL DSI Video Mode panel



config DRM_PANEL_BOE_TV101WUM_LL2

	tristate "BOE TV101WUM LL2 1200x1920 panel"

	depends on OF

	depends on DRM_MIPI_DSI

	depends on BACKLIGHT_CLASS_DEVICE

	help

	  Say Y here if you want to support for BOE TV101WUM-LL2

	  WUXGA PANEL DSI Video Mode panel



config DRM_PANEL_EBBG_FT8719

	tristate "EBBG FT8719 panel driver"

	depends on OF

drivers/gpu/drm/panel/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -6,6 +6,7 @@ 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_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

obj-$(CONFIG_DRM_PANEL_DSI_CM) += panel-dsi-cm.o

obj-$(CONFIG_DRM_PANEL_LVDS) += panel-lvds.o

drivers/gpu/drm/panel/panel-boe-tv101wum-ll2.c

0 → 100644
+241 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

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

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

//   Copyright (c) 2024, Neil Armstrong <neil.armstrong@linaro.org>



#include <linux/delay.h>

#include <linux/gpio/consumer.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/regulator/consumer.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_tv101wum_ll2 {

	struct drm_panel panel;

	struct mipi_dsi_device *dsi;

	struct gpio_desc *reset_gpio;

	struct regulator_bulk_data *supplies;

};



static const struct regulator_bulk_data boe_tv101wum_ll2_supplies[] = {

	{ .supply = "vsp" },

	{ .supply = "vsn" },

};



static inline struct boe_tv101wum_ll2 *to_boe_tv101wum_ll2(struct drm_panel *panel)

{

	return container_of(panel, struct boe_tv101wum_ll2, panel);

}



static void boe_tv101wum_ll2_reset(struct boe_tv101wum_ll2 *ctx)

{

	gpiod_set_value_cansleep(ctx->reset_gpio, 0);

	usleep_range(5000, 6000);

	gpiod_set_value_cansleep(ctx->reset_gpio, 1);

	usleep_range(5000, 6000);

	gpiod_set_value_cansleep(ctx->reset_gpio, 0);



	msleep(120);

}



static int boe_tv101wum_ll2_on(struct boe_tv101wum_ll2 *ctx)

{

	struct mipi_dsi_device *dsi = ctx->dsi;

	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };



	dsi->mode_flags |= MIPI_DSI_MODE_LPM;



	mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);



	mipi_dsi_msleep(&dsi_ctx, 120);



	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x50, 0x5a, 0x0e);

	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x80, 0xff, 0x81, 0x68, 0x6c, 0x22,

				     0x6d, 0x12, 0x00, 0x00, 0x00, 0x00, 0x00);

	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x50, 0x5a, 0x23);

	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x90, 0x00, 0x00);

	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x94, 0x2c, 0x00);

	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x50, 0x5a, 0x19);

	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xa2, 0x38);



	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0x50, 0x5a, 0x0c);

	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0x80, 0xfd);

	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0x50, 0x00);



	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);



	mipi_dsi_msleep(&dsi_ctx, 20);



	return dsi_ctx.accum_err;

}



static void boe_tv101wum_ll2_off(struct boe_tv101wum_ll2 *ctx)

{

	struct mipi_dsi_device *dsi = ctx->dsi;

	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };



	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;



	mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);



	mipi_dsi_msleep(&dsi_ctx, 70);



	mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);



	mipi_dsi_msleep(&dsi_ctx, 20);



	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x04, 0x5a);

	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x05, 0x5a);



	mipi_dsi_msleep(&dsi_ctx, 150);

}



static int boe_tv101wum_ll2_prepare(struct drm_panel *panel)

{

	struct boe_tv101wum_ll2 *ctx = to_boe_tv101wum_ll2(panel);

	int ret;



	ret = regulator_bulk_enable(ARRAY_SIZE(boe_tv101wum_ll2_supplies),

				    ctx->supplies);

	if (ret < 0)

		return ret;



	boe_tv101wum_ll2_reset(ctx);



	ret = boe_tv101wum_ll2_on(ctx);

	if (ret < 0) {

		gpiod_set_value_cansleep(ctx->reset_gpio, 1);

		regulator_bulk_disable(ARRAY_SIZE(boe_tv101wum_ll2_supplies),

				       ctx->supplies);

		return ret;

	}



	return 0;

}



static int boe_tv101wum_ll2_unprepare(struct drm_panel *panel)

{

	struct boe_tv101wum_ll2 *ctx = to_boe_tv101wum_ll2(panel);



	/* Ignore errors on failure, in any case set gpio and disable regulators */

	boe_tv101wum_ll2_off(ctx);



	gpiod_set_value_cansleep(ctx->reset_gpio, 1);



	regulator_bulk_disable(ARRAY_SIZE(boe_tv101wum_ll2_supplies),

			       ctx->supplies);



	return 0;

}



static const struct drm_display_mode boe_tv101wum_ll2_mode = {

	.clock = (1200 + 27 + 8 + 12) * (1920 + 155 + 8 + 32) * 60 / 1000,

	.hdisplay = 1200,

	.hsync_start = 1200 + 27,

	.hsync_end = 1200 + 27 + 8,

	.htotal = 1200 + 27 + 8 + 12,

	.vdisplay = 1920,

	.vsync_start = 1920 + 155,

	.vsync_end = 1920 + 155 + 8,

	.vtotal = 1920 + 155 + 8 + 32,

	.width_mm = 136,

	.height_mm = 217,

	.type = DRM_MODE_TYPE_DRIVER,

};



static int boe_tv101wum_ll2_get_modes(struct drm_panel *panel,

				      struct drm_connector *connector)

{

	/* We do not set display_info.bpc since unset value is bpc=8 by default */

	return drm_connector_helper_get_modes_fixed(connector, &boe_tv101wum_ll2_mode);

}



static const struct drm_panel_funcs boe_tv101wum_ll2_panel_funcs = {

	.prepare = boe_tv101wum_ll2_prepare,

	.unprepare = boe_tv101wum_ll2_unprepare,

	.get_modes = boe_tv101wum_ll2_get_modes,

};



static int boe_tv101wum_ll2_probe(struct mipi_dsi_device *dsi)

{

	struct device *dev = &dsi->dev;

	struct boe_tv101wum_ll2 *ctx;

	int ret;



	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);

	if (!ctx)

		return -ENOMEM;



	ret = devm_regulator_bulk_get_const(&dsi->dev,

					ARRAY_SIZE(boe_tv101wum_ll2_supplies),

					boe_tv101wum_ll2_supplies,

					&ctx->supplies);

	if (ret < 0)

		return ret;



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

	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_MODE_VIDEO_HSE;



	drm_panel_init(&ctx->panel, dev, &boe_tv101wum_ll2_panel_funcs,

		       DRM_MODE_CONNECTOR_DSI);

	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_tv101wum_ll2_remove(struct mipi_dsi_device *dsi)

{

	struct boe_tv101wum_ll2 *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_tv101wum_ll2_of_match[] = {

	{ .compatible = "boe,tv101wum-ll2" },

	{ /* sentinel */ }

};

MODULE_DEVICE_TABLE(of, boe_tv101wum_ll2_of_match);



static struct mipi_dsi_driver boe_tv101wum_ll2_driver = {

	.probe = boe_tv101wum_ll2_probe,

	.remove = boe_tv101wum_ll2_remove,

	.driver = {

		.name = "panel-boe-tv101wum_ll2",

		.of_match_table = boe_tv101wum_ll2_of_match,

	},

};

module_mipi_dsi_driver(boe_tv101wum_ll2_driver);



MODULE_DESCRIPTION("DRM driver for BOE TV101WUM-LL2 Panel");

MODULE_LICENSE("GPL");