+
+#include <video/mipi_display.h>
+
+struct visionox_vtdr6130 {
+ struct drm_panel panel;
+ struct mipi_dsi_device *dsi;
+ struct gpio_desc *reset_gpio;
+ struct regulator_bulk_data supplies[3];
+ bool prepared;
+};
+
+static inline struct visionox_vtdr6130 *to_visionox_vtdr6130(struct drm_panel *panel)
+{
+ return container_of(panel, struct visionox_vtdr6130, panel);
+}
+
+static void visionox_vtdr6130_reset(struct visionox_vtdr6130 *ctx)
+{
+ gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+ usleep_range(10000, 11000);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ usleep_range(10000, 11000);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+ usleep_range(10000, 11000);
+}
+
+static int visionox_vtdr6130_on(struct visionox_vtdr6130 *ctx)
+{
+ struct mipi_dsi_device *dsi = ctx->dsi;
+ struct device *dev = &dsi->dev;
+ int ret;
+
+ dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+ ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
+ if (ret)
+ return ret;
+
+ mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
+ mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_DISPLAY_BRIGHTNESS, 0x00, 0x00);
+ mipi_dsi_dcs_write_seq(dsi, 0x59, 0x09);
+ mipi_dsi_dcs_write_seq(dsi, 0x6c, 0x01);
+ mipi_dsi_dcs_write_seq(dsi, 0x6d, 0x00);
+ mipi_dsi_dcs_write_seq(dsi, 0x6f, 0x01);
+ mipi_dsi_dcs_write_seq(dsi, 0x70,
+ 0x12, 0x00, 0x00, 0xab, 0x30, 0x80, 0x09, 0x60, 0x04,
+ 0x38, 0x00, 0x28, 0x02, 0x1c, 0x02, 0x1c, 0x02, 0x00,
+ 0x02, 0x0e, 0x00, 0x20, 0x03, 0xdd, 0x00, 0x07, 0x00,
+ 0x0c, 0x02, 0x77, 0x02, 0x8b, 0x18, 0x00, 0x10, 0xf0,
+ 0x07, 0x10, 0x20, 0x00, 0x06, 0x0f, 0x0f, 0x33, 0x0e,
+ 0x1c, 0x2a, 0x38, 0x46, 0x54, 0x62, 0x69, 0x70, 0x77,
+ 0x79, 0x7b, 0x7d, 0x7e, 0x02, 0x02, 0x22, 0x00, 0x2a,
+ 0x40, 0x2a, 0xbe, 0x3a, 0xfc, 0x3a, 0xfa, 0x3a, 0xf8,
+ 0x3b, 0x38, 0x3b, 0x78, 0x3b, 0xb6, 0x4b, 0xb6, 0x4b,
+ 0xf4, 0x4b, 0xf4, 0x6c, 0x34, 0x84, 0x74, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00);
+ mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xaa, 0x10);
+ mipi_dsi_dcs_write_seq(dsi, 0xb1,
+ 0x01, 0x38, 0x00, 0x14, 0x00, 0x1c, 0x00, 0x01, 0x66,
+ 0x00, 0x14, 0x00, 0x14, 0x00, 0x01, 0x66, 0x00, 0x14,
+ 0x05, 0xcc, 0x00);
+ mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xaa, 0x13);
+ mipi_dsi_dcs_write_seq(dsi, 0xce,
+ 0x09, 0x11, 0x09, 0x11, 0x08, 0xc1, 0x07, 0xfa, 0x05,
+ 0xa4, 0x00, 0x3c, 0x00, 0x34, 0x00, 0x24, 0x00, 0x0c,
+ 0x00, 0x0c, 0x04, 0x00, 0x35);
+ mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xaa, 0x14);
+ mipi_dsi_dcs_write_seq(dsi, 0xb2, 0x03, 0x33);
+ mipi_dsi_dcs_write_seq(dsi, 0xb4,
+ 0x00, 0x33, 0x00, 0x00, 0x00, 0x3e, 0x00, 0x00, 0x00,
+ 0x3e, 0x00, 0x00);
+ mipi_dsi_dcs_write_seq(dsi, 0xb5,
+ 0x00, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x06, 0x01);
+ mipi_dsi_dcs_write_seq(dsi, 0xb9, 0x00, 0x00, 0x08, 0x09, 0x09, 0x09);
+ mipi_dsi_dcs_write_seq(dsi, 0xbc,
+ 0x10, 0x00, 0x00, 0x06, 0x11, 0x09, 0x3b, 0x09, 0x47,
+ 0x09, 0x47, 0x00);
+ mipi_dsi_dcs_write_seq(dsi, 0xbe,
+ 0x10, 0x10, 0x00, 0x08, 0x22, 0x09, 0x19, 0x09, 0x25,
+ 0x09, 0x25, 0x00);
+ mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x80);
+ mipi_dsi_dcs_write_seq(dsi, 0x65, 0x14);
+ mipi_dsi_dcs_write_seq(dsi, 0xfa, 0x08, 0x08, 0x08);
+ mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x81);
+ mipi_dsi_dcs_write_seq(dsi, 0x65, 0x05);
+ mipi_dsi_dcs_write_seq(dsi, 0xf3, 0x0f);
+ mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xaa, 0x00);
+ mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x82);
+ mipi_dsi_dcs_write_seq(dsi, 0xf9, 0x00);
+ mipi_dsi_dcs_write_seq(dsi, 0xff, 0x51, 0x83);
+ mipi_dsi_dcs_write_seq(dsi, 0x65, 0x04);
+ mipi_dsi_dcs_write_seq(dsi, 0xf8, 0x00);
+ mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x00);
+ mipi_dsi_dcs_write_seq(dsi, 0x65, 0x01);
+ mipi_dsi_dcs_write_seq(dsi, 0xf4, 0x9a);
+ mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x00);
+
+ 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(120);
+
+ ret = mipi_dsi_dcs_set_display_on(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to set display on: %d\n", ret);
+ return ret;
+ }
+ msleep(20);
+
+ return 0;
+}
+
+static int visionox_vtdr6130_off(struct visionox_vtdr6130 *ctx)
+{
+ struct mipi_dsi_device *dsi = ctx->dsi;
+ struct device *dev = &dsi->dev;
+ int ret;
+
+ dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+ ret = mipi_dsi_dcs_set_display_off(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to set display off: %d\n", ret);
+ return ret;
+ }
+ msleep(20);
+
+ ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
+ return ret;
+ }
+ msleep(120);
+
+ return 0;
+}
+
+static int visionox_vtdr6130_prepare(struct drm_panel *panel)
+{
+ struct visionox_vtdr6130 *ctx = to_visionox_vtdr6130(panel);
+ struct device *dev = &ctx->dsi->dev;
+ int ret;
+
+ if (ctx->prepared)
+ return 0;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies),
+ ctx->supplies);
+ if (ret < 0)
+ return ret;
+
+ visionox_vtdr6130_reset(ctx);
+
+ ret = visionox_vtdr6130_on(ctx);
+ if (ret < 0) {
+ dev_err(dev, "Failed to initialize panel: %d\n", ret);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+ return ret;
+ }
+
+ ctx->prepared = true;
+ return 0;
+}
+
+static int visionox_vtdr6130_unprepare(struct drm_panel *panel)
+{
+ struct visionox_vtdr6130 *ctx = to_visionox_vtdr6130(panel);
+ struct device *dev = &ctx->dsi->dev;
+ int ret;
+
+ if (!ctx->prepared)
+ return 0;
+
+ ret = visionox_vtdr6130_off(ctx);
+ if (ret < 0)
+ dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
+
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+
+ regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+
+ ctx->prepared = false;
+ return 0;
+}
+
+static const struct drm_display_mode visionox_vtdr6130_mode = {
+ .clock = (1080 + 20 + 2 + 20) * (2400 + 20 + 2 + 18) * 144 / 1000,
+ .hdisplay = 1080,
+ .hsync_start = 1080 + 20,
+ .hsync_end = 1080 + 20 + 2,
+ .htotal = 1080 + 20 + 2 + 20,
+ .vdisplay = 2400,
+ .vsync_start = 2400 + 20,
+ .vsync_end = 2400 + 20 + 2,
+ .vtotal = 2400 + 20 + 2 + 18,
+ .width_mm = 71,
+ .height_mm = 157,
+};
+
+static int visionox_vtdr6130_get_modes(struct drm_panel *panel,
+ struct drm_connector *connector)
+{
+ struct drm_display_mode *mode;
+
+ mode = drm_mode_duplicate(connector->dev, &visionox_vtdr6130_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 visionox_vtdr6130_panel_funcs = {
+ .prepare = visionox_vtdr6130_prepare,
+ .unprepare = visionox_vtdr6130_unprepare,
+ .get_modes = visionox_vtdr6130_get_modes,
+};
+
+static int visionox_vtdr6130_bl_update_status(struct backlight_device *bl)
+{
+ struct mipi_dsi_device *dsi = bl_get_data(bl);
+ u16 brightness = backlight_get_brightness(bl);
+ /* Panel needs big-endian order of brightness value */
+ u8 payload[2] = { brightness >> 8, brightness & 0xff };
+ int ret;
+
+ ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_SET_DISPLAY_BRIGHTNESS,
+ payload, sizeof(payload));
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static const struct backlight_ops visionox_vtdr6130_bl_ops = {
+ .update_status = visionox_vtdr6130_bl_update_status,
+};
+
+static struct backlight_device *
+visionox_vtdr6130_create_backlight(struct mipi_dsi_device *dsi)
+{
+ struct device *dev = &dsi->dev;
+ const struct backlight_properties props = {
+ .type = BACKLIGHT_RAW,
+ .brightness = 4095,
+ .max_brightness = 4095,
+ };
+
+ return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
+ &visionox_vtdr6130_bl_ops, &props);
+}
+
+static int visionox_vtdr6130_probe(struct mipi_dsi_device *dsi)
+{
+ struct device *dev = &dsi->dev;
+ struct visionox_vtdr6130 *ctx;
+ int ret;
+
+ ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ ctx->supplies[0].supply = "vddio";
+ ctx->supplies[1].supply = "vci";
+ ctx->supplies[2].supply = "vdd";
+
+ ret = devm_regulator_bulk_get(&dsi->dev, ARRAY_SIZE(ctx->supplies),
+ ctx->supplies);
+ if (ret < 0)
+ return ret;
+
+ ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(ctx->reset_gpio))
+ return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
+ "Failed to get reset-gpios\n");
+
+ ctx->dsi = dsi;
+ mipi_dsi_set_drvdata(dsi, ctx);
+
+ dsi->lanes = 4;
+ dsi->format = MIPI_DSI_FMT_RGB888;
+ dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_NO_EOT_PACKET |
+ MIPI_DSI_CLOCK_NON_CONTINUOUS;
+
+ drm_panel_init(&ctx->panel, dev, &visionox_vtdr6130_panel_funcs,
+ DRM_MODE_CONNECTOR_DSI);
+
+ ctx->panel.backlight = visionox_vtdr6130_create_backlight(dsi);
+ if (IS_ERR(ctx->panel.backlight))
+ return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
+ "Failed to create backlight\n");
+
+ drm_panel_add(&ctx->panel);
+
+ ret = mipi_dsi_attach(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
+ drm_panel_remove(&ctx->panel);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void visionox_vtdr6130_remove(struct mipi_dsi_device *dsi)
+{
+ struct visionox_vtdr6130 *ctx = 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(&ctx->panel);
+}
+
+static const struct of_device_id visionox_vtdr6130_of_match[] = {
+ { .compatible = "visionox,vtdr6130" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, visionox_vtdr6130_of_match);
+
+static struct mipi_dsi_driver visionox_vtdr6130_driver = {
+ .probe = visionox_vtdr6130_probe,
+ .remove = visionox_vtdr6130_remove,
+ .driver = {
+ .name = "panel-visionox-vtdr6130",
+ .of_match_table = visionox_vtdr6130_of_match,
+ },
+};
+module_mipi_dsi_driver(visionox_vtdr6130_driver);
+
+MODULE_AUTHOR("Neil Armstrong <neil.armstrong@xxxxxxxxxx>");
+MODULE_DESCRIPTION("Panel driver for the Visionox VTDR6130 AMOLED DSI panel");
+MODULE_LICENSE("GPL");
--
2.34.1
