1 // SPDX-License-Identifier: GPL-2.0-only
3  * Samsung AMS427AP24 panel with S6E88A0 controller
454 	struct mipi_dsi_device *dsi = ctx->dsi;  in s6e88a0_ams427ap24_set_brightness()
456 	struct device *dev = &dsi->dev;  in s6e88a0_ams427ap24_set_brightness()
457 	int brightness = bd->props.brightness;  in s6e88a0_ams427ap24_set_brightness()
487 		return -EINVAL;  in s6e88a0_ams427ap24_set_brightness()
497 		       s6e88a0_ams427ap24_elvss[candela_enum - CANDELA_111CD],  in s6e88a0_ams427ap24_set_brightness()
521 	gpiod_set_value_cansleep(ctx->reset_gpio, 0);  in s6e88a0_ams427ap24_reset()
523 	gpiod_set_value_cansleep(ctx->reset_gpio, 1);  in s6e88a0_ams427ap24_reset()
525 	gpiod_set_value_cansleep(ctx->reset_gpio, 0);  in s6e88a0_ams427ap24_reset()
531 	struct mipi_dsi_device *dsi = ctx->dsi;  in s6e88a0_ams427ap24_on()
533 	struct device *dev = &dsi->dev;  in s6e88a0_ams427ap24_on()
536 	dsi->mode_flags |= MIPI_DSI_MODE_LPM;  in s6e88a0_ams427ap24_on()
555 	if (ctx->flip_horizontal)  in s6e88a0_ams427ap24_on()
561 	ret = s6e88a0_ams427ap24_set_brightness(ctx->bl_dev);  in s6e88a0_ams427ap24_on()
574 	struct mipi_dsi_device *dsi = ctx->dsi;  in s6e88a0_ams427ap24_off()
577 	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;  in s6e88a0_ams427ap24_off()
589 	struct device *dev = &ctx->dsi->dev;  in s6e88a0_ams427ap24_prepare()
593 				    ctx->supplies);  in s6e88a0_ams427ap24_prepare()
604 		gpiod_set_value_cansleep(ctx->reset_gpio, 1);  in s6e88a0_ams427ap24_prepare()
606 				       ctx->supplies);  in s6e88a0_ams427ap24_prepare()
616 	struct device *dev = &ctx->dsi->dev;  in s6e88a0_ams427ap24_unprepare()
621 		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);  in s6e88a0_ams427ap24_unprepare()
623 	gpiod_set_value_cansleep(ctx->reset_gpio, 1);  in s6e88a0_ams427ap24_unprepare()
625 			       ctx->supplies);  in s6e88a0_ams427ap24_unprepare()
669 	struct mipi_dsi_device *dsi = ctx->dsi;  in s6e88a0_ams427ap24_register_backlight()
670 	struct device *dev = &dsi->dev;  in s6e88a0_ams427ap24_register_backlight()
673 	ctx->bl_dev = devm_backlight_device_register(dev, dev_name(dev), dev, ctx,  in s6e88a0_ams427ap24_register_backlight()
676 	if (IS_ERR(ctx->bl_dev)) {  in s6e88a0_ams427ap24_register_backlight()
677 		ret = PTR_ERR(ctx->bl_dev);  in s6e88a0_ams427ap24_register_backlight()
686 	struct device *dev = &dsi->dev;  in s6e88a0_ams427ap24_probe()
692 		return -ENOMEM;  in s6e88a0_ams427ap24_probe()
697 				      &ctx->supplies);  in s6e88a0_ams427ap24_probe()
701 	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);  in s6e88a0_ams427ap24_probe()
702 	if (IS_ERR(ctx->reset_gpio))  in s6e88a0_ams427ap24_probe()
703 		return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),  in s6e88a0_ams427ap24_probe()
704 				     "Failed to get reset-gpios\n");  in s6e88a0_ams427ap24_probe()
706 	ctx->dsi = dsi;  in s6e88a0_ams427ap24_probe()
709 	dsi->lanes = 2;  in s6e88a0_ams427ap24_probe()
710 	dsi->format = MIPI_DSI_FMT_RGB888;  in s6e88a0_ams427ap24_probe()
711 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |  in s6e88a0_ams427ap24_probe()
714 	drm_panel_init(&ctx->panel, dev, &s6e88a0_ams427ap24_panel_funcs,  in s6e88a0_ams427ap24_probe()
716 	ctx->panel.prepare_prev_first = true;  in s6e88a0_ams427ap24_probe()
718 	ctx->flip_horizontal = device_property_read_bool(dev, "flip-horizontal");  in s6e88a0_ams427ap24_probe()
724 	drm_panel_add(&ctx->panel);  in s6e88a0_ams427ap24_probe()
729 		drm_panel_remove(&ctx->panel);  in s6e88a0_ams427ap24_probe()
743 		dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);  in s6e88a0_ams427ap24_remove()
745 	drm_panel_remove(&ctx->panel);  in s6e88a0_ams427ap24_remove()
749 	{ .compatible = "samsung,s6e88a0-ams427ap24" },
758 		.name = "panel-s6e88a0-ams427ap24",
765 MODULE_DESCRIPTION("Samsung AMS427AP24 panel with S6E88A0 controller");