[PATCH v2 2/7] video: panel: add Samsung LTL106HL02 MIPI DSI panel driver
Svyatoslav Ryhel
clamor95 at gmail.com
Wed Jan 31 07:57:16 CET 2024
From: Anton Bambura <jenneron at protonmail.com>
LTL106HL02 is a color active matrix TFT (Thin Film Transistor)
liquid crystal display (LCD) that uses amorphous silicon TFT as
switching devices. This model is composed of a TFT LCD panel, a
driver circuit and a backlight unit. The resolution of a 10.6"
contains 1920 x 1080 pixels and can display up to 16,8M color
with wide viewing angle.
Co-developed-by: Jonas Schwöbel <jonasschwoebel at yahoo.de>
Signed-off-by: Jonas Schwöbel <jonasschwoebel at yahoo.de>
Co-developed-by: Svyatoslav Ryhel <clamor95 at gmail.com>
Signed-off-by: Svyatoslav Ryhel <clamor95 at gmail.com>
Signed-off-by: Anton Bambura <jenneron at protonmail.com>
---
drivers/video/Kconfig | 9 ++
drivers/video/Makefile | 1 +
drivers/video/samsung-ltl106hl02.c | 157 +++++++++++++++++++++++++++++
3 files changed, 167 insertions(+)
create mode 100644 drivers/video/samsung-ltl106hl02.c
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 05567a0095..52b515197d 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -555,6 +555,15 @@ config VIDEO_LCD_RENESAS_R69328
IPS-LCD module with Renesas R69328 IC. The panel has a 720x1280
resolution and uses 24 bit RGB per pixel.
+config VIDEO_LCD_SAMSUNG_LTL106HL02
+ tristate "Samsung LTL106HL02 1920x1080 DSI video mode panel"
+ depends on PANEL && BACKLIGHT
+ select VIDEO_MIPI_DSI
+ help
+ Say Y here if you want to enable support for Samsung LTL106HL02
+ LCD module found in Microsoft Surface 2. The panel has a FullHD
+ resolution (1920x1080).
+
config VIDEO_LCD_SSD2828
bool "SSD2828 bridge chip"
---help---
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index bb6d9b74b9..f3f70cd04a 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -63,6 +63,7 @@ obj-$(CONFIG_VIDEO_LCD_ORISETECH_OTM8009A) += orisetech_otm8009a.o
obj-$(CONFIG_VIDEO_LCD_RAYDIUM_RM68200) += raydium-rm68200.o
obj-$(CONFIG_VIDEO_LCD_RENESAS_R61307) += renesas-r61307.o
obj-$(CONFIG_VIDEO_LCD_RENESAS_R69328) += renesas-r69328.o
+obj-$(CONFIG_VIDEO_LCD_SAMSUNG_LTL106HL02) += samsung-ltl106hl02.o
obj-$(CONFIG_VIDEO_LCD_SSD2828) += ssd2828.o
obj-$(CONFIG_VIDEO_LCD_TDO_TL070WSH30) += tdo-tl070wsh30.o
obj-$(CONFIG_VIDEO_MCDE_SIMPLE) += mcde_simple.o
diff --git a/drivers/video/samsung-ltl106hl02.c b/drivers/video/samsung-ltl106hl02.c
new file mode 100644
index 0000000000..5e6c11c4be
--- /dev/null
+++ b/drivers/video/samsung-ltl106hl02.c
@@ -0,0 +1,157 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Samsung LTL106HL02-001 DSI panel driver
+ *
+ * Copyright (c) 2020 Anton Bambura <jenneron at protonmail.com>
+ * Copyright (c) 2023 Svyatoslav Ryhel <clamor95 at gmail.com>
+ * Copyright (c) 2024 Jonas Schwöbel <jonasschwoebel at yahoo.de>
+ */
+
+#include <backlight.h>
+#include <dm.h>
+#include <panel.h>
+#include <log.h>
+#include <mipi_dsi.h>
+#include <asm/gpio.h>
+#include <linux/delay.h>
+#include <power/regulator.h>
+
+struct samsung_ltl106hl02_priv {
+ struct udevice *vdd;
+ struct udevice *backlight;
+
+ struct gpio_desc reset_gpio;
+};
+
+static struct display_timing default_timing = {
+ .pixelclock.typ = 137000000,
+ .hactive.typ = 1920,
+ .hfront_porch.typ = 32,
+ .hback_porch.typ = 64,
+ .hsync_len.typ = 32,
+ .vactive.typ = 1080,
+ .vfront_porch.typ = 2,
+ .vback_porch.typ = 26,
+ .vsync_len.typ = 3,
+};
+
+static int samsung_ltl106hl02_enable_backlight(struct udevice *dev)
+{
+ struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
+ struct mipi_dsi_device *dsi = plat->device;
+ int ret;
+
+ ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+ if (ret < 0) {
+ log_debug("%s: failed to exit sleep mode: %d\n",
+ __func__, ret);
+ return ret;
+ }
+ mdelay(70);
+
+ ret = mipi_dsi_dcs_set_display_on(dsi);
+ if (ret < 0) {
+ log_debug("%s: failed to enable display: %d\n",
+ __func__, ret);
+ return ret;
+ }
+ mdelay(5);
+
+ return 0;
+}
+
+static int samsung_ltl106hl02_set_backlight(struct udevice *dev, int percent)
+{
+ struct samsung_ltl106hl02_priv *priv = dev_get_priv(dev);
+ int ret;
+
+ ret = backlight_enable(priv->backlight);
+ if (ret)
+ return ret;
+
+ return backlight_set_brightness(priv->backlight, percent);
+}
+
+static int samsung_ltl106hl02_timings(struct udevice *dev,
+ struct display_timing *timing)
+{
+ memcpy(timing, &default_timing, sizeof(*timing));
+ return 0;
+}
+
+static int samsung_ltl106hl02_of_to_plat(struct udevice *dev)
+{
+ struct samsung_ltl106hl02_priv *priv = dev_get_priv(dev);
+ int ret;
+
+ ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev,
+ "backlight", &priv->backlight);
+ if (ret) {
+ log_debug("%s: cannot get backlight: ret = %d\n",
+ __func__, ret);
+ return ret;
+ }
+
+ ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
+ "vdd-supply", &priv->vdd);
+ if (ret)
+ log_debug("%s: cannot get vdd-supply: error %d\n",
+ __func__, ret);
+
+ ret = gpio_request_by_name(dev, "reset-gpios", 0,
+ &priv->reset_gpio, GPIOD_IS_OUT);
+ if (ret)
+ log_debug("%s: cannot get reset-gpios: error %d\n",
+ __func__, ret);
+
+ return 0;
+}
+
+static int samsung_ltl106hl02_hw_init(struct udevice *dev)
+{
+ struct samsung_ltl106hl02_priv *priv = dev_get_priv(dev);
+
+ dm_gpio_set_value(&priv->reset_gpio, 1);
+ regulator_set_enable_if_allowed(priv->vdd, 1);
+
+ /* Dataheets states at least 8.5 msec for vdd stabilization */
+ mdelay(10);
+
+ dm_gpio_set_value(&priv->reset_gpio, 0);
+
+ return 0;
+}
+
+static int samsung_ltl106hl02_probe(struct udevice *dev)
+{
+ struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
+
+ /* fill characteristics of DSI data link */
+ plat->lanes = 4;
+ plat->format = MIPI_DSI_FMT_RGB888;
+ plat->mode_flags = MIPI_DSI_MODE_VIDEO;
+
+ return samsung_ltl106hl02_hw_init(dev);
+}
+
+static const struct panel_ops samsung_ltl106hl02_ops = {
+ .enable_backlight = samsung_ltl106hl02_enable_backlight,
+ .set_backlight = samsung_ltl106hl02_set_backlight,
+ .get_display_timing = samsung_ltl106hl02_timings,
+};
+
+static const struct udevice_id samsung_ltl106hl02_ids[] = {
+ { .compatible = "samsung,ltl106hl02-001" },
+ { }
+};
+
+U_BOOT_DRIVER(samsung_ltl106hl02) = {
+ .name = "samsung_ltl106hl02",
+ .id = UCLASS_PANEL,
+ .of_match = samsung_ltl106hl02_ids,
+ .ops = &samsung_ltl106hl02_ops,
+ .of_to_plat = samsung_ltl106hl02_of_to_plat,
+ .probe = samsung_ltl106hl02_probe,
+ .plat_auto = sizeof(struct mipi_dsi_panel_plat),
+ .priv_auto = sizeof(struct samsung_ltl106hl02_priv),
+};
--
2.40.1
More information about the U-Boot
mailing list