1 // SPDX-License-Identifier: GPL-2.0+
5  * base on panel-kingdisplay-kd097d04.c
29 	struct regulator *iovcc;  member
272 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in ltk500hd1829_unprepare()
275 	if (!ctx->prepared)  in ltk500hd1829_unprepare()
280 		dev_err(panel->dev, "failed to set display off: %d\n", ret);  in ltk500hd1829_unprepare()
284 		dev_err(panel->dev, "failed to enter sleep mode: %d\n", ret);  in ltk500hd1829_unprepare()
290 	regulator_disable(ctx->iovcc);  in ltk500hd1829_unprepare()
291 	regulator_disable(ctx->vcc);  in ltk500hd1829_unprepare()
293 	ctx->prepared = false;  in ltk500hd1829_unprepare()
301 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in ltk500hd1829_prepare()
305 	if (ctx->prepared)  in ltk500hd1829_prepare()
308 	ret = regulator_enable(ctx->vcc);  in ltk500hd1829_prepare()
310 		dev_err(ctx->dev, "Failed to enable vci supply: %d\n", ret);  in ltk500hd1829_prepare()
313 	ret = regulator_enable(ctx->iovcc);  in ltk500hd1829_prepare()
315 		dev_err(ctx->dev, "Failed to enable iovcc supply: %d\n", ret);  in ltk500hd1829_prepare()
319 	gpiod_set_value_cansleep(ctx->reset_gpio, 1);  in ltk500hd1829_prepare()
322 	gpiod_set_value_cansleep(ctx->reset_gpio, 0);  in ltk500hd1829_prepare()
331 			dev_err(panel->dev, "failed to write init cmds: %d\n", ret);  in ltk500hd1829_prepare()
338 		dev_err(panel->dev, "failed to exit sleep mode: %d\n", ret);  in ltk500hd1829_prepare()
347 		dev_err(panel->dev, "failed to set display on: %d\n", ret);  in ltk500hd1829_prepare()
351 	ctx->prepared = true;  in ltk500hd1829_prepare()
356 	regulator_disable(ctx->iovcc);  in ltk500hd1829_prepare()
358 	regulator_disable(ctx->vcc);  in ltk500hd1829_prepare()
382 	mode = drm_mode_duplicate(connector->dev, &default_mode);  in ltk500hd1829_get_modes()
384 		dev_err(ctx->dev, "failed to add mode %ux%u@%u\n",  in ltk500hd1829_get_modes()
387 		return -ENOMEM;  in ltk500hd1829_get_modes()
392 	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;  in ltk500hd1829_get_modes()
393 	connector->display_info.width_mm = mode->width_mm;  in ltk500hd1829_get_modes()
394 	connector->display_info.height_mm = mode->height_mm;  in ltk500hd1829_get_modes()
409 	struct device *dev = &dsi->dev;  in ltk500hd1829_probe()
412 	ctx = devm_kzalloc(&dsi->dev, sizeof(*ctx), GFP_KERNEL);  in ltk500hd1829_probe()
414 		return -ENOMEM;  in ltk500hd1829_probe()
416 	ctx->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);  in ltk500hd1829_probe()
417 	if (IS_ERR(ctx->reset_gpio)) {  in ltk500hd1829_probe()
419 		return PTR_ERR(ctx->reset_gpio);  in ltk500hd1829_probe()
422 	ctx->vcc = devm_regulator_get(dev, "vcc");  in ltk500hd1829_probe()
423 	if (IS_ERR(ctx->vcc)) {  in ltk500hd1829_probe()
424 		ret = PTR_ERR(ctx->vcc);  in ltk500hd1829_probe()
425 		if (ret != -EPROBE_DEFER)  in ltk500hd1829_probe()
430 	ctx->iovcc = devm_regulator_get(dev, "iovcc");  in ltk500hd1829_probe()
431 	if (IS_ERR(ctx->iovcc)) {  in ltk500hd1829_probe()
432 		ret = PTR_ERR(ctx->iovcc);  in ltk500hd1829_probe()
433 		if (ret != -EPROBE_DEFER)  in ltk500hd1829_probe()
434 			dev_err(dev, "Failed to request iovcc regulator: %d\n", ret);  in ltk500hd1829_probe()
440 	ctx->dev = dev;  in ltk500hd1829_probe()
442 	dsi->lanes = 4;  in ltk500hd1829_probe()
443 	dsi->format = MIPI_DSI_FMT_RGB888;  in ltk500hd1829_probe()
444 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |  in ltk500hd1829_probe()
447 	drm_panel_init(&ctx->panel, &dsi->dev, &ltk500hd1829_funcs,  in ltk500hd1829_probe()
450 	ret = drm_panel_of_backlight(&ctx->panel);  in ltk500hd1829_probe()
454 	drm_panel_add(&ctx->panel);  in ltk500hd1829_probe()
459 		drm_panel_remove(&ctx->panel);  in ltk500hd1829_probe()
471 	ret = drm_panel_unprepare(&ctx->panel);  in ltk500hd1829_shutdown()
473 		dev_err(&dsi->dev, "Failed to unprepare panel: %d\n", ret);  in ltk500hd1829_shutdown()
475 	ret = drm_panel_disable(&ctx->panel);  in ltk500hd1829_shutdown()
477 		dev_err(&dsi->dev, "Failed to disable panel: %d\n", ret);  in ltk500hd1829_shutdown()
489 		dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);  in ltk500hd1829_remove()
491 	drm_panel_remove(&ctx->panel);  in ltk500hd1829_remove()
504 		.name = "panel-leadtek-ltk500hd1829",
513 MODULE_AUTHOR("Heiko Stuebner <heiko.stuebner@theobroma-systems.com>");