// SPDX-License-Identifier: GPL-2.0-only #include #include #include #include #include #include #include #include #include struct tm5p5_nt35596 { struct drm_panel panel; struct mipi_dsi_device *dsi; struct regulator_bulk_data supplies[2]; struct gpio_desc *reset_gpio; }; static inline struct tm5p5_nt35596 *to_tm5p5_nt35596(struct drm_panel *panel) { return container_of(panel, struct tm5p5_nt35596, panel); } static void tm5p5_nt35596_reset(struct tm5p5_nt35596 *ctx) { gpiod_set_value_cansleep(ctx->reset_gpio, 1); usleep_range(1000, 2000); gpiod_set_value_cansleep(ctx->reset_gpio, 0); usleep_range(1000, 2000); gpiod_set_value_cansleep(ctx->reset_gpio, 1); usleep_range(15000, 16000); } static void tm5p5_nt35596_on(struct mipi_dsi_multi_context *dsi_ctx) { mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xff, 0x05); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xfb, 0x01); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xc5, 0x31); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xff, 0x04); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x01, 0x84); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x05, 0x25); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x06, 0x01); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x07, 0x20); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x08, 0x06); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x09, 0x08); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x0a, 0x10); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x0b, 0x10); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x0c, 0x10); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x0d, 0x14); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x0e, 0x14); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x0f, 0x14); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x10, 0x14); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x11, 0x14); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x12, 0x14); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x17, 0xf3); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x18, 0xc0); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x19, 0xc0); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x1a, 0xc0); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x1b, 0xb3); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x1c, 0xb3); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x1d, 0xb3); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x1e, 0xb3); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x1f, 0xb3); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x20, 0xb3); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xfb, 0x01); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xff, 0x00); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xfb, 0x01); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x35, 0x01); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xd3, 0x06); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xd4, 0x04); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x5e, 0x0d); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x11, 0x00); mipi_dsi_msleep(dsi_ctx, 100); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x29, 0x00); mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x53, 0x24); } static void tm5p5_nt35596_off(struct mipi_dsi_multi_context *dsi_ctx) { mipi_dsi_dcs_set_display_off_multi(dsi_ctx); mipi_dsi_msleep(dsi_ctx, 60); mipi_dsi_dcs_enter_sleep_mode_multi(dsi_ctx); mipi_dsi_dcs_write_seq_multi(dsi_ctx, 0x4f, 0x01); } static int tm5p5_nt35596_prepare(struct drm_panel *panel) { struct tm5p5_nt35596 *ctx = to_tm5p5_nt35596(panel); struct mipi_dsi_multi_context dsi_ctx = {.dsi = ctx->dsi}; dsi_ctx.accum_err = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies); if (dsi_ctx.accum_err) return dsi_ctx.accum_err; tm5p5_nt35596_reset(ctx); tm5p5_nt35596_on(&dsi_ctx); if (dsi_ctx.accum_err) { gpiod_set_value_cansleep(ctx->reset_gpio, 0); regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); } return dsi_ctx.accum_err; } static int tm5p5_nt35596_unprepare(struct drm_panel *panel) { struct tm5p5_nt35596 *ctx = to_tm5p5_nt35596(panel); struct mipi_dsi_multi_context dsi_ctx = {.dsi = ctx->dsi}; tm5p5_nt35596_off(&dsi_ctx); gpiod_set_value_cansleep(ctx->reset_gpio, 0); regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); return dsi_ctx.accum_err; } static const struct drm_display_mode tm5p5_nt35596_mode = { .clock = (1080 + 100 + 8 + 16) * (1920 + 4 + 2 + 4) * 60 / 1000, .hdisplay = 1080, .hsync_start = 1080 + 100, .hsync_end = 1080 + 100 + 8, .htotal = 1080 + 100 + 8 + 16, .vdisplay = 1920, .vsync_start = 1920 + 4, .vsync_end = 1920 + 4 + 2, .vtotal = 1920 + 4 + 2 + 4, .width_mm = 68, .height_mm = 121, }; static int tm5p5_nt35596_get_modes(struct drm_panel *panel, struct drm_connector *connector) { struct drm_display_mode *mode; mode = drm_mode_duplicate(connector->dev, &tm5p5_nt35596_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 tm5p5_nt35596_panel_funcs = { .prepare = tm5p5_nt35596_prepare, .unprepare = tm5p5_nt35596_unprepare, .get_modes = tm5p5_nt35596_get_modes, }; static int tm5p5_nt35596_bl_update_status(struct backlight_device *bl) { struct mipi_dsi_device *dsi = bl_get_data(bl); u16 brightness = backlight_get_brightness(bl); int ret; dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; ret = mipi_dsi_dcs_set_display_brightness(dsi, brightness); if (ret < 0) return ret; dsi->mode_flags |= MIPI_DSI_MODE_LPM; return 0; } static int tm5p5_nt35596_bl_get_brightness(struct backlight_device *bl) { struct mipi_dsi_device *dsi = bl_get_data(bl); u16 brightness = bl->props.brightness; int ret; dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; ret = mipi_dsi_dcs_get_display_brightness(dsi, &brightness); if (ret < 0) return ret; dsi->mode_flags |= MIPI_DSI_MODE_LPM; return brightness & 0xff; } static const struct backlight_ops tm5p5_nt35596_bl_ops = { .update_status = tm5p5_nt35596_bl_update_status, .get_brightness = tm5p5_nt35596_bl_get_brightness, }; static struct backlight_device * tm5p5_nt35596_create_backlight(struct mipi_dsi_device *dsi) { struct device *dev = &dsi->dev; const struct backlight_properties props = { .type = BACKLIGHT_RAW, .brightness = 255, .max_brightness = 255, }; return devm_backlight_device_register(dev, dev_name(dev), dev, dsi, &tm5p5_nt35596_bl_ops, &props); } static int tm5p5_nt35596_probe(struct mipi_dsi_device *dsi) { struct device *dev = &dsi->dev; struct tm5p5_nt35596 *ctx; int ret; ctx = devm_drm_panel_alloc(dev, struct tm5p5_nt35596, panel, &tm5p5_nt35596_panel_funcs, DRM_MODE_CONNECTOR_DSI); if (IS_ERR(ctx)) return PTR_ERR(ctx); ctx->supplies[0].supply = "vdd"; ctx->supplies[1].supply = "vddio"; ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies), ctx->supplies); if (ret < 0) { dev_err(dev, "Failed to get regulators: %d\n", ret); return ret; } ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(ctx->reset_gpio)) { ret = PTR_ERR(ctx->reset_gpio); dev_err(dev, "Failed to get reset-gpios: %d\n", ret); return ret; } 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_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_MODE_NO_EOT_PACKET | MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM; ctx->panel.backlight = tm5p5_nt35596_create_backlight(dsi); if (IS_ERR(ctx->panel.backlight)) { ret = PTR_ERR(ctx->panel.backlight); dev_err(dev, "Failed to create backlight: %d\n", ret); return ret; } 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); return ret; } return 0; } static void tm5p5_nt35596_remove(struct mipi_dsi_device *dsi) { struct tm5p5_nt35596 *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 tm5p5_nt35596_of_match[] = { { .compatible = "asus,z00t-tm5p5-n35596" }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, tm5p5_nt35596_of_match); static struct mipi_dsi_driver tm5p5_nt35596_driver = { .probe = tm5p5_nt35596_probe, .remove = tm5p5_nt35596_remove, .driver = { .name = "panel-tm5p5-nt35596", .of_match_table = tm5p5_nt35596_of_match, }, }; module_mipi_dsi_driver(tm5p5_nt35596_driver); MODULE_AUTHOR("Konrad Dybcio "); MODULE_DESCRIPTION("DRM driver for tm5p5 nt35596 1080p video mode dsi panel"); MODULE_LICENSE("GPL v2");