Commit fdb4e289 authored by Svyatoslav Ryhel's avatar Svyatoslav Ryhel Committed by Neil Armstrong
Browse files

drm: panel: Add support for Hydis HV101HD1 MIPI DSI panel 



HV101HD1-1E1 is a color active matrix TFT LCD module using amorphous
silicon TFT's (Thin Film Transistors) as an active switching devices. This
module has a 10.1 inch diagonally measured active area with HD resolutions
(1366 horizontal by 768 vertical pixel array).

Signed-off-by: default avatarSvyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: default avatarDavid Heidelberg <david@ixit.cz>
Signed-off-by: default avatarNeil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250717135752.55958-3-clamor95@gmail.com
parent bd068333

drivers/gpu/drm/panel/Kconfig

+13 −0
Original line number Diff line number Diff line
@@ -215,6 +215,19 @@ config DRM_PANEL_HIMAX_HX8394 


	  If M is selected the module will be called panel-himax-hx8394.



config DRM_PANEL_HYDIS_HV101HD1

	tristate "Hydis HV101HD1 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 the Hydis HV101HD1

	  2-lane 1366x768 MIPI DSI panel found in ASUS VivoTab RT TF600T.

	  HV101HD1 is a color active matrix TFT LCD module using amorphous

	  silicon TFT's (Thin Film Transistors) as an active switching devices.



	  If M is selected the module will be called panel-hydis-hv101hd1



config DRM_PANEL_ILITEK_IL9322

	tristate "Ilitek ILI9322 320x240 QVGA panels"

	depends on OF && SPI

drivers/gpu/drm/panel/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -22,6 +22,7 @@ obj-$(CONFIG_DRM_PANEL_HIMAX_HX83102) += panel-himax-hx83102.o 
obj-$(CONFIG_DRM_PANEL_HIMAX_HX83112A) += panel-himax-hx83112a.o

obj-$(CONFIG_DRM_PANEL_HIMAX_HX83112B) += panel-himax-hx83112b.o

obj-$(CONFIG_DRM_PANEL_HIMAX_HX8394) += panel-himax-hx8394.o

obj-$(CONFIG_DRM_PANEL_HYDIS_HV101HD1) += panel-hydis-hv101hd1.o

obj-$(CONFIG_DRM_PANEL_ILITEK_IL9322) += panel-ilitek-ili9322.o

obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9341) += panel-ilitek-ili9341.o

obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9805) += panel-ilitek-ili9805.o

drivers/gpu/drm/panel/panel-hydis-hv101hd1.c

0 → 100644
+188 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only



#include <linux/array_size.h>

#include <linux/delay.h>

#include <linux/err.h>

#include <linux/gpio/consumer.h>

#include <linux/mod_devicetable.h>

#include <linux/module.h>

#include <linux/property.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>



struct hv101hd1 {

	struct drm_panel panel;

	struct mipi_dsi_device *dsi;

	struct regulator_bulk_data *supplies;

};



static const struct regulator_bulk_data hv101hd1_supplies[] = {

	{ .supply = "vdd" },

	{ .supply = "vio" },

};



static inline struct hv101hd1 *to_hv101hd1(struct drm_panel *panel)

{

	return container_of(panel, struct hv101hd1, panel);

}



static int hv101hd1_prepare(struct drm_panel *panel)

{

	struct hv101hd1 *hv = to_hv101hd1(panel);

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

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

	int ret;



	ret = regulator_bulk_enable(ARRAY_SIZE(hv101hd1_supplies), hv->supplies);

	if (ret) {

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

		return ret;

	}



	mipi_dsi_dcs_exit_sleep_mode_multi(&ctx);

	mipi_dsi_msleep(&ctx, 20);



	mipi_dsi_dcs_set_display_on_multi(&ctx);

	mipi_dsi_msleep(&ctx, 20);



	return 0;

}



static int hv101hd1_disable(struct drm_panel *panel)

{

	struct hv101hd1 *hv = to_hv101hd1(panel);

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



	mipi_dsi_dcs_set_display_off_multi(&ctx);

	mipi_dsi_msleep(&ctx, 120);

	mipi_dsi_dcs_enter_sleep_mode_multi(&ctx);

	mipi_dsi_msleep(&ctx, 20);



	return 0;

}



static int hv101hd1_unprepare(struct drm_panel *panel)

{

	struct hv101hd1 *hv = to_hv101hd1(panel);



	return regulator_bulk_disable(ARRAY_SIZE(hv101hd1_supplies),

				      hv->supplies);

}



static const struct drm_display_mode hv101hd1_mode = {

	.clock = (1366 + 74 + 36 + 24) * (768 + 21 + 7 + 4) * 60 / 1000,

	.hdisplay = 1366,

	.hsync_start = 1366 + 74,

	.hsync_end = 1366 + 74 + 36,

	.htotal = 1366 + 74 + 36 + 24,

	.vdisplay = 768,

	.vsync_start = 768 + 21,

	.vsync_end = 768 + 21 + 7,

	.vtotal = 768 + 21 + 7 + 4,

	.width_mm = 140,

	.height_mm = 220,

};



static int hv101hd1_get_modes(struct drm_panel *panel, struct drm_connector *connector)

{

	struct drm_display_mode *mode;



	mode = drm_mode_duplicate(connector->dev, &hv101hd1_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 hv101hd1_panel_funcs = {

	.prepare = hv101hd1_prepare,

	.disable = hv101hd1_disable,

	.unprepare = hv101hd1_unprepare,

	.get_modes = hv101hd1_get_modes,

};



static int hv101hd1_probe(struct mipi_dsi_device *dsi)

{

	struct device *dev = &dsi->dev;

	struct hv101hd1 *hv;

	int ret;



	hv = devm_drm_panel_alloc(dev, struct hv101hd1, panel,

				  &hv101hd1_panel_funcs,

				  DRM_MODE_CONNECTOR_DSI);

	if (IS_ERR(hv))

		return PTR_ERR(hv);



	ret = devm_regulator_bulk_get_const(dev, ARRAY_SIZE(hv101hd1_supplies),

					    hv101hd1_supplies, &hv->supplies);

	if (ret)

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



	hv->dsi = dsi;

	mipi_dsi_set_drvdata(dsi, hv);



	dsi->lanes = 2;

	dsi->format = MIPI_DSI_FMT_RGB888;

	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_LPM;



	ret = drm_panel_of_backlight(&hv->panel);

	if (ret)

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



	drm_panel_add(&hv->panel);



	ret = mipi_dsi_attach(dsi);

	if (ret) {

		drm_panel_remove(&hv->panel);

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

	}



	return 0;

}



static void hv101hd1_remove(struct mipi_dsi_device *dsi)

{

	struct hv101hd1 *hv = 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(&hv->panel);

}



static const struct of_device_id hv101hd1_of_match[] = {

	{ .compatible = "hydis,hv101hd1" },

	{ /* sentinel */ }

};

MODULE_DEVICE_TABLE(of, hv101hd1_of_match);



static struct mipi_dsi_driver hv101hd1_driver = {

	.driver = {

		.name = "panel-hv101hd1",

		.of_match_table = hv101hd1_of_match,

	},

	.probe = hv101hd1_probe,

	.remove = hv101hd1_remove,

};

module_mipi_dsi_driver(hv101hd1_driver);



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

MODULE_DESCRIPTION("DRM driver for Hydis HV101HD1 panel");

MODULE_LICENSE("GPL");