Shanghai Top Display Optolelectronics Co., Ltd is a display manufacturer from Shanghai. Web site of the company: http://www.shtdo.com/

Signed-off-by: Neil Armstrong narmstrong@baylibre.com --- Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml index a1e4356cf522..4e9dfb352c68 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.yaml +++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml @@ -1078,6 +1078,8 @@ patternProperties: description: TPK U.S.A. LLC "^tplink,.*": description: TP-LINK Technologies Co., Ltd. + "^tdo,.*": + description: Shangai Top Display Optoelectronics Co., Ltd "^tpo,.*": description: TPO "^tq,.*":

Simple DSI panels can also have a reset GPIO signal in addition/instead of an enable GPIO signal.

This adds an optional reset-gpios property.

Signed-off-by: Neil Armstrong narmstrong@baylibre.com --- .../devicetree/bindings/display/panel/panel-simple-dsi.yaml | 1 + 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/display/panel/panel-simple-dsi.yaml b/Documentation/devicetree/bindings/display/panel/panel-simple-dsi.yaml index c0dd9fa29f1d..4d08e746cb21 100644 --- a/Documentation/devicetree/bindings/display/panel/panel-simple-dsi.yaml +++ b/Documentation/devicetree/bindings/display/panel/panel-simple-dsi.yaml @@ -54,6 +54,7 @@ properties:

backlight: true enable-gpios: true + reset-gpios: true port: true power-supply: true

This adds support for the TDO TL070WSH30 TFT-LCD panel module. The panel has a 1024×600 resolution and uses 24 bit RGB per pixel. It provides a MIPI DSI interface to the host, a built-in LED backlight and touch controller.

Signed-off-by: Neil Armstrong narmstrong@baylibre.com --- drivers/gpu/drm/panel/Kconfig | 11 + drivers/gpu/drm/panel/Makefile | 1 + drivers/gpu/drm/panel/panel-tdo-tl070wsh30.c | 250 +++++++++++++++++++ 3 files changed, 262 insertions(+) create mode 100644 drivers/gpu/drm/panel/panel-tdo-tl070wsh30.c

diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 8d97d07c5871..2d488a875b99 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -433,6 +433,17 @@ config DRM_PANEL_SONY_ACX565AKM Say Y here if you want to enable support for the Sony ACX565AKM 800x600 3.5" panel (found on the Nokia N900).

+config DRM_PANEL_TDO_TL070WSH30 + tristate "TDO TL070WSH30 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 TDO TL070WSH30 TFT-LCD + panel module. The panel has a 1024×600 resolution and uses + 24 bit RGB per pixel. It provides a MIPI DSI interface to + the host, a built-in LED backlight and touch controller. + config DRM_PANEL_TPO_TD028TTEC1 tristate "Toppoly (TPO) TD028TTEC1 panel driver" depends on OF && SPI diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index 15a4e7752951..35ee06a1b5c2 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -45,6 +45,7 @@ obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7703) += panel-sitronix-st7703.o obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7789V) += panel-sitronix-st7789v.o obj-$(CONFIG_DRM_PANEL_SONY_ACX424AKP) += panel-sony-acx424akp.o obj-$(CONFIG_DRM_PANEL_SONY_ACX565AKM) += panel-sony-acx565akm.o +obj-$(CONFIG_DRM_PANEL_TDO_TL070WSH30) += panel-tdo-tl070wsh30.o obj-$(CONFIG_DRM_PANEL_TPO_TD028TTEC1) += panel-tpo-td028ttec1.o obj-$(CONFIG_DRM_PANEL_TPO_TD043MTEA1) += panel-tpo-td043mtea1.o obj-$(CONFIG_DRM_PANEL_TPO_TPG110) += panel-tpo-tpg110.o diff --git a/drivers/gpu/drm/panel/panel-tdo-tl070wsh30.c b/drivers/gpu/drm/panel/panel-tdo-tl070wsh30.c new file mode 100644 index 000000000000..820731be7147 --- /dev/null +++ b/drivers/gpu/drm/panel/panel-tdo-tl070wsh30.c @@ -0,0 +1,250 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2020 BayLibre, SAS + * Author: Neil Armstrong narmstrong@baylibre.com + */ + +#include <linux/delay.h> +#include <linux/gpio/consumer.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/regulator/consumer.h> + +#include <video/mipi_display.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> + +struct tdo_tl070wsh30_panel { + struct drm_panel base; + struct mipi_dsi_device *link; + + struct regulator *supply; + struct gpio_desc *reset_gpio; + + bool prepared; +}; + +static inline +struct tdo_tl070wsh30_panel *to_tdo_tl070wsh30_panel(struct drm_panel *panel) +{ + return container_of(panel, struct tdo_tl070wsh30_panel, base); +} + +static int tdo_tl070wsh30_panel_prepare(struct drm_panel *panel) +{ + struct tdo_tl070wsh30_panel *tdo_tl070wsh30 = to_tdo_tl070wsh30_panel(panel); + int err; + + if (tdo_tl070wsh30->prepared) + return 0; + + err = regulator_enable(tdo_tl070wsh30->supply); + if (err < 0) + return err; + + usleep_range(10000, 11000); + + gpiod_set_value_cansleep(tdo_tl070wsh30->reset_gpio, 1); + + usleep_range(10000, 11000); + + gpiod_set_value_cansleep(tdo_tl070wsh30->reset_gpio, 0); + + msleep(200); + + err = mipi_dsi_dcs_exit_sleep_mode(tdo_tl070wsh30->link); + if (err < 0) { + dev_err(panel->dev, "failed to exit sleep mode: %d\n", err); + regulator_disable(tdo_tl070wsh30->supply); + return err; + } + + msleep(200); + + err = mipi_dsi_dcs_set_display_on(tdo_tl070wsh30->link); + if (err < 0) { + dev_err(panel->dev, "failed to set display on: %d\n", err); + regulator_disable(tdo_tl070wsh30->supply); + return err; + } + + msleep(20); + + tdo_tl070wsh30->prepared = true; + + return 0; +} + +static int tdo_tl070wsh30_panel_unprepare(struct drm_panel *panel) +{ + struct tdo_tl070wsh30_panel *tdo_tl070wsh30 = to_tdo_tl070wsh30_panel(panel); + int err; + + if (!tdo_tl070wsh30->prepared) + return 0; + + err = mipi_dsi_dcs_set_display_off(tdo_tl070wsh30->link); + if (err < 0) + dev_err(panel->dev, "failed to set display off: %d\n", err); + + usleep_range(10000, 11000); + + err = mipi_dsi_dcs_enter_sleep_mode(tdo_tl070wsh30->link); + if (err < 0) { + dev_err(panel->dev, "failed to enter sleep mode: %d\n", err); + return err; + } + + usleep_range(10000, 11000); + + regulator_disable(tdo_tl070wsh30->supply); + + tdo_tl070wsh30->prepared = false; + + return 0; +} + +static const struct drm_display_mode default_mode = { + .clock = 47250, + .hdisplay = 1024, + .hsync_start = 1024 + 46, + .hsync_end = 1024 + 46 + 80, + .htotal = 1024 + 46 + 80 + 100, + .vdisplay = 600, + .vsync_start = 600 + 5, + .vsync_end = 600 + 5 + 5, + .vtotal = 600 + 5 + 5 + 20, + .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC, +}; + +static int tdo_tl070wsh30_panel_get_modes(struct drm_panel *panel, + struct drm_connector *connector) +{ + struct drm_display_mode *mode; + + mode = drm_mode_duplicate(connector->dev, &default_mode); + if (!mode) { + dev_err(panel->dev, "failed to add mode %ux%u@%u\n", + default_mode.hdisplay, default_mode.vdisplay, + drm_mode_vrefresh(&default_mode)); + return -ENOMEM; + } + + drm_mode_set_name(mode); + + drm_mode_probed_add(connector, mode); + + connector->display_info.width_mm = 154; + connector->display_info.height_mm = 85; + connector->display_info.bpc = 8; + + return 1; +} + +static const struct drm_panel_funcs tdo_tl070wsh30_panel_funcs = { + .unprepare = tdo_tl070wsh30_panel_unprepare, + .prepare = tdo_tl070wsh30_panel_prepare, + .get_modes = tdo_tl070wsh30_panel_get_modes, +}; + +static const struct of_device_id tdo_tl070wsh30_of_match[] = { + { .compatible = "tdo,tl070wsh30", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, tdo_tl070wsh30_of_match); + +static int tdo_tl070wsh30_panel_add(struct tdo_tl070wsh30_panel *tdo_tl070wsh30) +{ + struct device *dev = &tdo_tl070wsh30->link->dev; + int err; + + tdo_tl070wsh30->supply = devm_regulator_get(dev, "power"); + if (IS_ERR(tdo_tl070wsh30->supply)) + return PTR_ERR(tdo_tl070wsh30->supply); + + tdo_tl070wsh30->reset_gpio = devm_gpiod_get(dev, "reset", + GPIOD_OUT_LOW); + if (IS_ERR(tdo_tl070wsh30->reset_gpio)) { + err = PTR_ERR(tdo_tl070wsh30->reset_gpio); + dev_dbg(dev, "failed to get reset gpio: %d\n", err); + return err; + } + + drm_panel_init(&tdo_tl070wsh30->base, &tdo_tl070wsh30->link->dev, + &tdo_tl070wsh30_panel_funcs, DRM_MODE_CONNECTOR_DSI); + + err = drm_panel_of_backlight(&tdo_tl070wsh30->base); + if (err) + return err; + + drm_panel_add(&tdo_tl070wsh30->base); + + return 0; +} + +static int tdo_tl070wsh30_panel_probe(struct mipi_dsi_device *dsi) +{ + struct tdo_tl070wsh30_panel *tdo_tl070wsh30; + int err; + + dsi->lanes = 4; + dsi->format = MIPI_DSI_FMT_RGB888; + dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_LPM; + + tdo_tl070wsh30 = devm_kzalloc(&dsi->dev, sizeof(*tdo_tl070wsh30), + GFP_KERNEL); + if (!tdo_tl070wsh30) + return -ENOMEM; + + mipi_dsi_set_drvdata(dsi, tdo_tl070wsh30); + tdo_tl070wsh30->link = dsi; + + err = tdo_tl070wsh30_panel_add(tdo_tl070wsh30); + if (err < 0) + return err; + + return mipi_dsi_attach(dsi); +} + +static int tdo_tl070wsh30_panel_remove(struct mipi_dsi_device *dsi) +{ + struct tdo_tl070wsh30_panel *tdo_tl070wsh30 = mipi_dsi_get_drvdata(dsi); + int err; + + err = mipi_dsi_detach(dsi); + if (err < 0) + dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err); + + drm_panel_remove(&tdo_tl070wsh30->base); + drm_panel_disable(&tdo_tl070wsh30->base); + drm_panel_unprepare(&tdo_tl070wsh30->base); + + return 0; +} + +static void tdo_tl070wsh30_panel_shutdown(struct mipi_dsi_device *dsi) +{ + struct tdo_tl070wsh30_panel *tdo_tl070wsh30 = mipi_dsi_get_drvdata(dsi); + + drm_panel_disable(&tdo_tl070wsh30->base); + drm_panel_unprepare(&tdo_tl070wsh30->base); +} + +static struct mipi_dsi_driver tdo_tl070wsh30_panel_driver = { + .driver = { + .name = "panel-tdo-tl070wsh30", + .of_match_table = tdo_tl070wsh30_of_match, + }, + .probe = tdo_tl070wsh30_panel_probe, + .remove = tdo_tl070wsh30_panel_remove, + .shutdown = tdo_tl070wsh30_panel_shutdown, +}; +module_mipi_dsi_driver(tdo_tl070wsh30_panel_driver); + +MODULE_AUTHOR("Neil Armstrong narmstrong@baylibre.com"); +MODULE_DESCRIPTION("TDO TL070WSH30 panel driver"); +MODULE_LICENSE("GPL v2");