Commit 306e6407 authored by Svyatoslav Ryhel's avatar Svyatoslav Ryhel Committed by Neil Armstrong
Browse files

gpu/drm: panel: Add Sharp LQ079L1SX01 panel support 



This panel requires dual-channel mode. The device accepts video-mode data
on 8 lanes and will therefore need a dual-channel DSI controller. The two
interfaces that make up this device need to be instantiated in the
controllers that gang up to provide the dual-channel DSI host.

Signed-off-by: default avatarSvyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: default avatarDmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: default avatarNeil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250919153839.236241-3-clamor95@gmail.com
parent 16c5b1a6

drivers/gpu/drm/panel/Kconfig

+15 −0
Original line number Diff line number Diff line
@@ -888,6 +888,21 @@ config DRM_PANEL_SEIKO_43WVF1G 
	  Say Y here if you want to enable support for the Seiko

	  43WVF1G controller for 800x480 LCD panels



config DRM_PANEL_SHARP_LQ079L1SX01

	tristate "Sharp LQ079L1SX01 panel"

	depends on OF

	depends on DRM_MIPI_DSI

	depends on BACKLIGHT_CLASS_DEVICE

	select VIDEOMODE_HELPERS

	help

	  Say Y here if you want to enable support for Sharp LQ079L1SX01

	  TFT-LCD modules. The panel has a 2560x1600 resolution and uses

	  24 bit RGB per pixel. It provides a dual MIPI DSI interface to

	  the host.



	  To compile this driver as a module, choose M here: the module

	  will be called panel-sharp-lq079l1sx01.



config DRM_PANEL_SHARP_LQ101R1SX01

	tristate "Sharp LQ101R1SX01 panel"

	depends on OF

drivers/gpu/drm/panel/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -91,6 +91,7 @@ obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0) += panel-samsung-s6e8aa0.o 
obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA5X01_AMS561RA01) += panel-samsung-s6e8aa5x01-ams561ra01.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_LQ079L1SX01) += panel-sharp-lq079l1sx01.o

obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o

obj-$(CONFIG_DRM_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o

obj-$(CONFIG_DRM_PANEL_SHARP_LS043T1LE01) += panel-sharp-ls043t1le01.o

drivers/gpu/drm/panel/panel-sharp-lq079l1sx01.c

0 → 100644
+225 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2016 XiaoMi, Inc.

 * Copyright (c) 2024 Svyatoslav Ryhel <clamor95@gmail.com>

 */



#include <linux/delay.h>

#include <linux/gpio/consumer.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/of_graph.h>

#include <linux/regulator/consumer.h>



#include <video/mipi_display.h>



#include <drm/drm_connector.h>

#include <drm/drm_crtc.h>

#include <drm/drm_device.h>

#include <drm/drm_mipi_dsi.h>

#include <drm/drm_modes.h>

#include <drm/drm_panel.h>

#include <drm/drm_probe_helper.h>



static const struct regulator_bulk_data sharp_supplies[] = {

	{ .supply = "avdd" }, { .supply = "vddio" },

	{ .supply = "vsp" }, { .supply = "vsn" },

};



struct sharp_panel {

	struct drm_panel panel;

	struct mipi_dsi_device *dsi[2];



	struct gpio_desc *reset_gpio;

	struct regulator_bulk_data *supplies;



	const struct drm_display_mode *mode;

};



static inline struct sharp_panel *to_sharp_panel(struct drm_panel *panel)

{

	return container_of(panel, struct sharp_panel, panel);

}



static void sharp_panel_reset(struct sharp_panel *sharp)

{

	gpiod_set_value_cansleep(sharp->reset_gpio, 1);

	usleep_range(2000, 3000);

	gpiod_set_value_cansleep(sharp->reset_gpio, 0);

	usleep_range(2000, 3000);

}



static int sharp_panel_prepare(struct drm_panel *panel)

{

	struct sharp_panel *sharp = to_sharp_panel(panel);

	struct device *dev = panel->dev;

	struct mipi_dsi_device *dsi0 = sharp->dsi[0];

	struct mipi_dsi_device *dsi1 = sharp->dsi[1];

	struct mipi_dsi_multi_context dsi_ctx = { .dsi = NULL };

	int ret;



	ret = regulator_bulk_enable(ARRAY_SIZE(sharp_supplies), sharp->supplies);

	if (ret) {

		dev_err(dev, "error enabling regulators (%d)\n", ret);

		return ret;

	}



	msleep(24);



	if (sharp->reset_gpio)

		sharp_panel_reset(sharp);



	msleep(32);



	mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1, MIPI_DCS_EXIT_SLEEP_MODE);

	mipi_dsi_msleep(&dsi_ctx, 120);



	mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1,

					  MIPI_DCS_SET_DISPLAY_BRIGHTNESS, 0xff);

	mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1,

					  MIPI_DCS_WRITE_POWER_SAVE, 0x01);

	mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1,

					  MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x2c);



	mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1, MIPI_DCS_SET_DISPLAY_ON);



	return 0;

}



static int sharp_panel_unprepare(struct drm_panel *panel)

{

	struct sharp_panel *sharp = to_sharp_panel(panel);

	struct mipi_dsi_device *dsi0 = sharp->dsi[0];

	struct mipi_dsi_device *dsi1 = sharp->dsi[1];

	struct mipi_dsi_multi_context dsi_ctx = { .dsi = NULL };



	mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1, MIPI_DCS_SET_DISPLAY_OFF);

	mipi_dsi_msleep(&dsi_ctx, 100);

	mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1, MIPI_DCS_ENTER_SLEEP_MODE);

	mipi_dsi_msleep(&dsi_ctx, 150);



	if (sharp->reset_gpio)

		gpiod_set_value_cansleep(sharp->reset_gpio, 1);



	return regulator_bulk_disable(ARRAY_SIZE(sharp_supplies), sharp->supplies);

}



static const struct drm_display_mode default_mode = {

	.clock = (1536 + 136 + 28 + 28) * (2048 + 14 + 8 + 2) * 60 / 1000,

	.hdisplay = 1536,

	.hsync_start = 1536 + 136,

	.hsync_end = 1536 + 136 + 28,

	.htotal = 1536 + 136 + 28 + 28,

	.vdisplay = 2048,

	.vsync_start = 2048 + 14,

	.vsync_end = 2048 + 14 + 8,

	.vtotal = 2048 + 14 + 8 + 2,

	.width_mm = 120,

	.height_mm = 160,

	.type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,

};



static int sharp_panel_get_modes(struct drm_panel *panel,

				 struct drm_connector *connector)

{

	return drm_connector_helper_get_modes_fixed(connector, &default_mode);

}



static const struct drm_panel_funcs sharp_panel_funcs = {

	.unprepare = sharp_panel_unprepare,

	.prepare = sharp_panel_prepare,

	.get_modes = sharp_panel_get_modes,

};



static int sharp_panel_probe(struct mipi_dsi_device *dsi)

{

	const struct mipi_dsi_device_info info = { "sharp-link1", 0, NULL };

	struct device *dev = &dsi->dev;

	struct device_node *dsi_r;

	struct mipi_dsi_host *dsi_r_host;

	struct sharp_panel *sharp;

	int i, ret;



	sharp = devm_drm_panel_alloc(dev, struct sharp_panel, panel,

				     &sharp_panel_funcs, DRM_MODE_CONNECTOR_DSI);

	if (IS_ERR(sharp))

		return PTR_ERR(sharp);



	ret = devm_regulator_bulk_get_const(dev, ARRAY_SIZE(sharp_supplies),

					    sharp_supplies, &sharp->supplies);

	if (ret)

		return dev_err_probe(dev, ret, "failed to get supplies\n");



	sharp->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);

	if (IS_ERR(sharp->reset_gpio))

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

				     "failed to get reset GPIO\n");



	/* Panel is always connected to two DSI hosts, DSI0 is left, DSI1 is right */

	dsi_r = of_graph_get_remote_node(dsi->dev.of_node, 1, -1);

	if (!dsi_r)

		return dev_err_probe(dev, -ENODEV, "failed to find second DSI host node\n");



	dsi_r_host = of_find_mipi_dsi_host_by_node(dsi_r);

	of_node_put(dsi_r);

	if (!dsi_r_host)

		return dev_err_probe(dev, -EPROBE_DEFER, "cannot get secondary DSI host\n");



	sharp->dsi[1] = devm_mipi_dsi_device_register_full(dev, dsi_r_host, &info);

	if (IS_ERR(sharp->dsi[1]))

		return dev_err_probe(dev, PTR_ERR(sharp->dsi[1]),

				     "second link registration failed\n");



	sharp->dsi[0] = dsi;

	mipi_dsi_set_drvdata(dsi, sharp);



	ret = drm_panel_of_backlight(&sharp->panel);

	if (ret)

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



	drm_panel_add(&sharp->panel);



	for (i = 0; i < ARRAY_SIZE(sharp->dsi); i++) {

		if (!sharp->dsi[i])

			continue;



		sharp->dsi[i]->lanes = 4;

		sharp->dsi[i]->format = MIPI_DSI_FMT_RGB888;

		sharp->dsi[i]->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_LPM;



		ret = devm_mipi_dsi_attach(dev, sharp->dsi[i]);

		if (ret < 0) {

			drm_panel_remove(&sharp->panel);

			return dev_err_probe(dev, ret, "failed to attach to DSI%d\n", i);

		}

	}



	return 0;

}



static void sharp_panel_remove(struct mipi_dsi_device *dsi)

{

	struct sharp_panel *sharp = mipi_dsi_get_drvdata(dsi);



	drm_panel_remove(&sharp->panel);

}



static const struct of_device_id sharp_of_match[] = {

	{ .compatible = "sharp,lq079l1sx01" },

	{ }

};

MODULE_DEVICE_TABLE(of, sharp_of_match);



static struct mipi_dsi_driver sharp_panel_driver = {

	.driver = {

		.name = "panel-sharp-lq079l1sx01",

		.of_match_table = sharp_of_match,

	},

	.probe = sharp_panel_probe,

	.remove = sharp_panel_remove,

};

module_mipi_dsi_driver(sharp_panel_driver);



MODULE_AUTHOR("Svyatoslav Ryhel <clamor95@gmail.com>");

MODULE_DESCRIPTION("Sharp LQ079L1SX01 panel driver");

MODULE_LICENSE("GPL");