1 // SPDX-License-Identifier: GPL-2.0
3  * Panels based on the Ilitek ILI9882T display controller.
45 	struct mipi_dsi_device *dsi;  member
57 /* ILI9882-specific commands, add new commands as you decode them */
66 	struct mipi_dsi_multi_context ctx = { .dsi = ili->dsi };  in starry_ili9882t_init()
424 	struct mipi_dsi_multi_context ctx = { .dsi = ili->dsi };  in ili9882t_disable()
428 	ili->dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;  in ili9882t_disable()
442 	gpiod_set_value(ili->enable_gpio, 0);  in ili9882t_unprepare()
444 	regulator_disable(ili->avee);  in ili9882t_unprepare()
445 	regulator_disable(ili->avdd);  in ili9882t_unprepare()
447 	regulator_disable(ili->pp1800);  in ili9882t_unprepare()
448 	regulator_disable(ili->pp3300);  in ili9882t_unprepare()
458 	gpiod_set_value(ili->enable_gpio, 0);  in ili9882t_prepare()
461 	ret = regulator_enable(ili->pp3300);  in ili9882t_prepare()
465 	ret = regulator_enable(ili->pp1800);  in ili9882t_prepare()
471 	ret = regulator_enable(ili->avdd);  in ili9882t_prepare()
474 	ret = regulator_enable(ili->avee);  in ili9882t_prepare()
481 	ret = mipi_dsi_dcs_nop(ili->dsi);  in ili9882t_prepare()
483 		dev_err(&ili->dsi->dev, "Failed to send NOP: %d\n", ret);  in ili9882t_prepare()
488 	gpiod_set_value(ili->enable_gpio, 1);  in ili9882t_prepare()
490 	gpiod_set_value(ili->enable_gpio, 0);  in ili9882t_prepare()
492 	gpiod_set_value(ili->enable_gpio, 1);  in ili9882t_prepare()
495 	ret = ili->desc->init(ili);  in ili9882t_prepare()
502 	gpiod_set_value(ili->enable_gpio, 0);  in ili9882t_prepare()
503 	regulator_disable(ili->avee);  in ili9882t_prepare()
505 	regulator_disable(ili->avdd);  in ili9882t_prepare()
508 	regulator_disable(ili->pp1800);  in ili9882t_prepare()
550 	const struct drm_display_mode *m = ili->desc->modes;  in ili9882t_get_modes()
553 	mode = drm_mode_duplicate(connector->dev, m);  in ili9882t_get_modes()
555 		dev_err(panel->dev, "failed to add mode %ux%u@%u\n",  in ili9882t_get_modes()
556 			m->hdisplay, m->vdisplay, drm_mode_vrefresh(m));  in ili9882t_get_modes()
557 		return -ENOMEM;  in ili9882t_get_modes()
560 	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;  in ili9882t_get_modes()
564 	connector->display_info.width_mm = ili->desc->size.width_mm;  in ili9882t_get_modes()
565 	connector->display_info.height_mm = ili->desc->size.height_mm;  in ili9882t_get_modes()
566 	connector->display_info.bpc = ili->desc->bpc;  in ili9882t_get_modes()
575 	return ili->orientation;  in ili9882t_get_orientation()
589 	struct device *dev = &ili->dsi->dev;  in ili9882t_add()
592 	ili->avdd = devm_regulator_get(dev, "avdd");  in ili9882t_add()
593 	if (IS_ERR(ili->avdd))  in ili9882t_add()
594 		return PTR_ERR(ili->avdd);  in ili9882t_add()
596 	ili->avee = devm_regulator_get(dev, "avee");  in ili9882t_add()
597 	if (IS_ERR(ili->avee))  in ili9882t_add()
598 		return PTR_ERR(ili->avee);  in ili9882t_add()
600 	ili->pp3300 = devm_regulator_get(dev, "pp3300");  in ili9882t_add()
601 	if (IS_ERR(ili->pp3300))  in ili9882t_add()
602 		return PTR_ERR(ili->pp3300);  in ili9882t_add()
604 	ili->pp1800 = devm_regulator_get(dev, "pp1800");  in ili9882t_add()
605 	if (IS_ERR(ili->pp1800))  in ili9882t_add()
606 		return PTR_ERR(ili->pp1800);  in ili9882t_add()
608 	ili->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);  in ili9882t_add()
609 	if (IS_ERR(ili->enable_gpio)) {  in ili9882t_add()
610 		dev_err(dev, "cannot get enable-gpios %ld\n",  in ili9882t_add()
611 			PTR_ERR(ili->enable_gpio));  in ili9882t_add()
612 		return PTR_ERR(ili->enable_gpio);  in ili9882t_add()
615 	gpiod_set_value(ili->enable_gpio, 0);  in ili9882t_add()
617 	err = of_drm_get_panel_orientation(dev->of_node, &ili->orientation);  in ili9882t_add()
619 		dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, err);  in ili9882t_add()
623 	err = drm_panel_of_backlight(&ili->base);  in ili9882t_add()
627 	ili->base.funcs = &ili9882t_funcs;  in ili9882t_add()
628 	ili->base.dev = &ili->dsi->dev;  in ili9882t_add()
630 	drm_panel_add(&ili->base);  in ili9882t_add()
635 static int ili9882t_probe(struct mipi_dsi_device *dsi)  in ili9882t_probe()  argument
641 	ili = devm_drm_panel_alloc(&dsi->dev, __typeof(*ili), base,  in ili9882t_probe()
647 	desc = of_device_get_match_data(&dsi->dev);  in ili9882t_probe()
648 	dsi->lanes = desc->lanes;  in ili9882t_probe()
649 	dsi->format = desc->format;  in ili9882t_probe()
650 	dsi->mode_flags = desc->mode_flags;  in ili9882t_probe()
651 	ili->desc = desc;  in ili9882t_probe()
652 	ili->dsi = dsi;  in ili9882t_probe()
657 	mipi_dsi_set_drvdata(dsi, ili);  in ili9882t_probe()
659 	ret = mipi_dsi_attach(dsi);  in ili9882t_probe()
661 		drm_panel_remove(&ili->base);  in ili9882t_probe()
666 static void ili9882t_remove(struct mipi_dsi_device *dsi)  in ili9882t_remove()  argument
668 	struct ili9882t *ili = mipi_dsi_get_drvdata(dsi);  in ili9882t_remove()
671 	ret = mipi_dsi_detach(dsi);  in ili9882t_remove()
673 		dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);  in ili9882t_remove()
675 	if (ili->base.dev)  in ili9882t_remove()
676 		drm_panel_remove(&ili->base);  in ili9882t_remove()
689 		.name = "panel-ili9882t",
698 MODULE_DESCRIPTION("Ilitek ILI9882T-based panels driver");