Signed-off-by: Teguh Sobirin <teguh@xxxxxxxx>
---
drivers/gpu/drm/panel/Kconfig | 9 +
drivers/gpu/drm/panel/Makefile | 1 +
drivers/gpu/drm/panel/panel-innolux-td4328.c | 339 +++++++++++++++++++
3 files changed, 349 insertions(+)
create mode 100644 drivers/gpu/drm/panel/panel-innolux-td4328.c
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index a89c03379db5..50ecd01872b9 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -202,6 +202,15 @@ config DRM_PANEL_INNOLUX_P079ZCA
24 bit RGB per pixel. It provides a MIPI DSI interface to
the host and has a built-in LED backlight.
+config DRM_PANEL_INNOLUX_TD4328
+ tristate "Innolux TD4328 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 the panels built
+ around the Innolux TD4328 display controller.
+
config DRM_PANEL_JDI_LT070ME05000
tristate "JDI LT070ME05000 WUXGA DSI panel"
depends on OF
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index ddf488b96cb3..cc3389a13a2a 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -18,6 +18,7 @@ obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9341) += panel-ilitek-ili9341.o
obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9881C) += panel-ilitek-ili9881c.o
obj-$(CONFIG_DRM_PANEL_INNOLUX_EJ030NA) += panel-innolux-ej030na.o
obj-$(CONFIG_DRM_PANEL_INNOLUX_P079ZCA) += panel-innolux-p079zca.o
+obj-$(CONFIG_DRM_PANEL_INNOLUX_TD4328) += panel-innolux-td4328.o
obj-$(CONFIG_DRM_PANEL_JDI_LT070ME05000) += panel-jdi-lt070me05000.o
obj-$(CONFIG_DRM_PANEL_JDI_R63452) += panel-jdi-fhd-r63452.o
obj-$(CONFIG_DRM_PANEL_KHADAS_TS050) += panel-khadas-ts050.o
diff --git a/drivers/gpu/drm/panel/panel-innolux-td4328.c b/drivers/gpu/drm/panel/panel-innolux-td4328.c
new file mode 100644
index 000000000000..7c17f8c06512
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-innolux-td4328.c
@@ -0,0 +1,339 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2022 Teguh Sobirin
+ * Author: Teguh Sobirin <teguh@xxxxxxxx>
+ *
+ * This driver is for the DSI interface to Innolux panel
+ * Using the TD4328 display driver IC from Synaptics.
+ */
+
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regulator/consumer.h>
+
+#include <video/display_timing.h>
+#include <video/mipi_display.h>
+
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+
+struct td4328 {
+ struct device *dev;
+ struct drm_panel panel;
+ struct regulator *supply;
+ struct gpio_desc *reset_gpio;
+ enum drm_panel_orientation orientation;
+ bool prepared;
+};
+
+static inline struct td4328 *panel_to_td4328(struct drm_panel *panel)
+{
+ return container_of(panel, struct td4328, panel);
+}
+
+static int td4328_init_sequence(struct td4328 *ctx)
+{
+ struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+ struct device *dev = ctx->dev;
+ int ret;
+
+ ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
+ return ret;
+ }
+ msleep(70);
+
+ ret = mipi_dsi_dcs_set_column_address(dsi, 0, 1080 - 1);
+ if (ret < 0) {
+ dev_err(dev, "Failed to set sleep column address: %d\n", ret);
+ return ret;
+ }
+
+ ret = mipi_dsi_dcs_set_page_address(dsi, 0, 1920 - 1);
+ if (ret < 0) {
+ dev_err(dev, "Failed to set sleep page address: %d\n", ret);
+ return ret;
+ }
+
+ ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
+
+ if (ret < 0) {
+ dev_err(dev, "Failed to set tear on: %d\n", ret);
+ return ret;
+ }
+
+ ret = mipi_dsi_dcs_set_display_on(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to set display on: %d\n", ret);
+ return ret;
+ }
+
+ dev_dbg(dev, "Panel init sequence done\n");
+ return 0;
+}
+
+static int td4328_unprepare(struct drm_panel *panel)
+{
+ struct td4328 *ctx = panel_to_td4328(panel);
+ struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+ int ret;
+
+ if (!ctx->prepared)
+ return 0;
+
+ ret = mipi_dsi_dcs_set_display_off(dsi);
+ if (ret < 0)
+ dev_err(ctx->dev, "failed to set display off: %d\n", ret);
+
+ ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+ if (ret < 0) {
+ dev_err(ctx->dev, "failed to enter sleep mode: %d\n", ret);
+ return ret;
+ }
+
+ regulator_disable(ctx->supply);
+
+ ctx->prepared = false;
+
+ return 0;
+}
+
+static int td4328_prepare(struct drm_panel *panel)
+{
+ struct td4328 *ctx = panel_to_td4328(panel);
+ struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+ int ret;
+
+ if (ctx->prepared)
+ return 0;
+
+ dev_dbg(ctx->dev, "Resetting the panel\n");
+ ret = regulator_enable(ctx->supply);
+ if (ret < 0) {
+ dev_err(ctx->dev, "Failed to enable supply: %d\n", ret);
+ return ret;
+ }
+
+ msleep(20);
+
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ usleep_range(10, 20);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+
+ msleep(20);
+
+ ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+ if (ret < 0) {
+ dev_err(ctx->dev, "Failed to exit sleep mode: %d\n", ret);
+ goto disable_supply;
+ }
+
+ msleep(250);
+
+ ret = td4328_init_sequence(ctx);
+ if (ret < 0) {
+ dev_err(ctx->dev, "Panel init sequence failed: %d\n", ret);
+ goto disable_supply;
+ }
+
+ ret = mipi_dsi_dcs_set_display_on(dsi);
+ if (ret < 0) {
+ dev_err(ctx->dev, "Failed to set display on: %d\n", ret);
+ goto disable_supply;
+ }
+
+ msleep(50);
+
+ ctx->prepared = true;
+
+ return 0;
+
+disable_supply:
+ regulator_disable(ctx->supply);
+ return ret;
+}
+
+static const struct drm_display_mode default_mode = {
+ .clock = (1080 + 60 + 10 + 60) * (1920 + 20 + 8 + 20) * 60 / 1000,
+ .hdisplay = 1080,
+ .hsync_start = 1080 + 60,
+ .hsync_end = 1080 + 60 + 10,
+ .htotal = 1080 + 60 + 10 + 60,
+ .vdisplay = 1920,
+ .vsync_start = 1920 + 20,
+ .vsync_end = 1920 + 20 + 8,
+ .vtotal = 1920 + 20 + 8 + 20,
+ .width_mm = 75,
+ .height_mm = 132,
+};
+
+static int td4328_get_modes(struct drm_panel *panel,
+ struct drm_connector *connector)
+{
+ struct td4328 *ctx = panel_to_td4328(panel);
+ struct drm_display_mode *mode;
+
+ mode = drm_mode_duplicate(connector->dev, &default_mode);
+ if (!mode) {
+ dev_err(ctx->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);
+
+ 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);
+ drm_connector_set_panel_orientation(connector, ctx->orientation);
+
+ return 1;
+}
+
+static const struct drm_panel_funcs td4328_funcs = {
+ .unprepare = td4328_unprepare,
+ .prepare = td4328_prepare,
+ .get_modes = td4328_get_modes,
+};
+
+static int td4328_probe(struct mipi_dsi_device *dsi)
+{
+ struct device *dev = &dsi->dev;
+ struct td4328 *ctx;
+ int ret;
+
+ ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ ctx->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
+ if (IS_ERR(ctx->reset_gpio)) {
+ dev_err(dev, "cannot get reset gpio\n");
+ return PTR_ERR(ctx->reset_gpio);
+ }
+
+ ctx->supply = devm_regulator_get(dev, "vdd");
+ if (IS_ERR(ctx->supply)) {
+ ret = PTR_ERR(ctx->supply);
+ if (ret != -EPROBE_DEFER)
+ dev_err(dev, "Failed to request vdd regulator: %d\n", ret);
+ return ret;
+ }
+
+ ctx->supply = devm_regulator_get(dev, "vddio");
+ if (IS_ERR(ctx->supply)) {
+ ret = PTR_ERR(ctx->supply);
+ if (ret != -EPROBE_DEFER)
+ dev_err(dev, "Failed to request vddio regulator: %d\n", ret);
+ return ret;
+ }
+
+ ctx->supply = devm_regulator_get(dev, "vddpos");
+ if (IS_ERR(ctx->supply)) {
+ ret = PTR_ERR(ctx->supply);
+ if (ret != -EPROBE_DEFER)
+ dev_err(dev, "Failed to request vddpos regulator: %d\n", ret);
+ return ret;
+ }
+
+ ctx->supply = devm_regulator_get(dev, "vddneg");
+ if (IS_ERR(ctx->supply)) {
+ ret = PTR_ERR(ctx->supply);
+ if (ret != -EPROBE_DEFER)
+ dev_err(dev, "Failed to request vddneg regulator: %d\n", ret);
+ return ret;
+ }
+
+ ret = of_drm_get_panel_orientation(dev->of_node, &ctx->orientation);
+ if (ret < 0) {
+ dev_err(dev, "Failed to get orientation %d\n", ret);
+ return ret;
+ }
+
+ mipi_dsi_set_drvdata(dsi, ctx);
+
+ ctx->dev = dev;
+
+ dsi->lanes = 4;
+ dsi->format = MIPI_DSI_FMT_RGB888;
+ dsi->mode_flags = MIPI_DSI_MODE_LPM
+ | MIPI_DSI_MODE_VIDEO_HSE
+ | MIPI_DSI_CLOCK_NON_CONTINUOUS
+ | MIPI_DSI_MODE_VIDEO_BURST
+ | MIPI_DSI_MODE_NO_EOT_PACKET;
+
+ drm_panel_init(&ctx->panel, &dsi->dev, &td4328_funcs,
+ DRM_MODE_CONNECTOR_DSI);
+
+ ret = drm_panel_of_backlight(&ctx->panel);
+ if (ret)
+ return ret;
+
+ drm_panel_add(&ctx->panel);
+
+ ret = mipi_dsi_attach(dsi);
+ if (ret < 0) {
+ dev_err(dev, "mipi_dsi_attach failed: %d\n", ret);
+ drm_panel_remove(&ctx->panel);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void td4328_shutdown(struct mipi_dsi_device *dsi)
+{
+ struct td4328 *ctx = mipi_dsi_get_drvdata(dsi);
+ int ret;
+
+ ret = drm_panel_unprepare(&ctx->panel);
+ if (ret < 0)
+ dev_err(&dsi->dev, "Failed to unprepare panel: %d\n", ret);
+
+ ret = drm_panel_disable(&ctx->panel);
+ if (ret < 0)
+ dev_err(&dsi->dev, "Failed to disable panel: %d\n", ret);
+}
+
+static int td4328_remove(struct mipi_dsi_device *dsi)
+{
+ struct td4328 *ctx = mipi_dsi_get_drvdata(dsi);
+ int ret;
+
+ td4328_shutdown(dsi);
+
+ 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);
+
+ return 0;
+}
+
+static const struct of_device_id td4328_of_match[] = {
+ { .compatible = "innolux,td4328" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, td4328_of_match);
+
+static struct mipi_dsi_driver td4328_driver = {
+ .driver = {
+ .name = "panel-innolux-td4328",
+ .of_match_table = td4328_of_match,
+ },
+ .probe = td4328_probe,
+ .remove = td4328_remove,
+ .shutdown = td4328_shutdown,
+};
+module_mipi_dsi_driver(td4328_driver);
+
+MODULE_AUTHOR("Teguh Sobirin <teguh@xxxxxxxx>");
+MODULE_DESCRIPTION("DRM driver for TD4328 cmd mode DSI Innolux panel");
+MODULE_LICENSE("GPL v2");
--
2.30.2
