1 // SPDX-License-Identifier: GPL-2.0
3  * Samsung S6D7AA0 MIPI-DSI TFT LCD controller drm_panel driver.
59 	gpiod_set_value_cansleep(ctx->reset_gpio, 1);  in s6d7aa0_reset()
61 	gpiod_set_value_cansleep(ctx->reset_gpio, 0);  in s6d7aa0_reset()
67 	struct mipi_dsi_device *dsi = ctx->dsi;  in s6d7aa0_lock()
72 		if (ctx->desc->use_passwd3)  in s6d7aa0_lock()
77 		if (ctx->desc->use_passwd3)  in s6d7aa0_lock()
86 	struct mipi_dsi_device *dsi = ctx->dsi;  in s6d7aa0_on()
87 	struct device *dev = &dsi->dev;  in s6d7aa0_on()
90 	ret = ctx->desc->init_func(ctx);  in s6d7aa0_on()
93 		gpiod_set_value_cansleep(ctx->reset_gpio, 1);  in s6d7aa0_on()
108 	struct mipi_dsi_device *dsi = ctx->dsi;  in s6d7aa0_off()
109 	struct device *dev = &dsi->dev;  in s6d7aa0_off()
112 	ret = ctx->desc->off_func(ctx);  in s6d7aa0_off()
114 		dev_err(dev, "Panel-specific off function failed: %d\n", ret);  in s6d7aa0_off()
138 	struct device *dev = &ctx->dsi->dev;  in s6d7aa0_prepare()
141 	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);  in s6d7aa0_prepare()
152 		gpiod_set_value_cansleep(ctx->reset_gpio, 1);  in s6d7aa0_prepare()
162 	struct device *dev = &ctx->dsi->dev;  in s6d7aa0_disable()
167 		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);  in s6d7aa0_disable()
176 	gpiod_set_value_cansleep(ctx->reset_gpio, 1);  in s6d7aa0_unprepare()
177 	regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);  in s6d7aa0_unprepare()
184 static int s6d7aa0_bl_update_status(struct backlight_device *bl)  in s6d7aa0_bl_update_status()  argument
186 	struct mipi_dsi_device *dsi = bl_get_data(bl);  in s6d7aa0_bl_update_status()
187 	u16 brightness = backlight_get_brightness(bl);  in s6d7aa0_bl_update_status()
197 static int s6d7aa0_bl_get_brightness(struct backlight_device *bl)  in s6d7aa0_bl_get_brightness()  argument
199 	struct mipi_dsi_device *dsi = bl_get_data(bl);  in s6d7aa0_bl_get_brightness()
218 	struct device *dev = &dsi->dev;  in s6d7aa0_create_backlight()
233 	struct mipi_dsi_device *dsi = ctx->dsi;  in s6d7aa0_lsl080al02_init()
234 	struct device *dev = &dsi->dev;  in s6d7aa0_lsl080al02_init()
284 	struct mipi_dsi_device *dsi = ctx->dsi;  in s6d7aa0_lsl080al02_off()
322 	struct mipi_dsi_device *dsi = ctx->dsi;  in s6d7aa0_lsl080al03_init()
323 	struct device *dev = &dsi->dev;  in s6d7aa0_lsl080al03_init()
334 	if (ctx->desc->panel_type == S6D7AA0_PANEL_LSL080AL03) {  in s6d7aa0_lsl080al03_init()
341 	} else if (ctx->desc->panel_type == S6D7AA0_PANEL_LTL101AT01) {  in s6d7aa0_lsl080al03_init()
388 	struct mipi_dsi_device *dsi = ctx->dsi;  in s6d7aa0_lsl080al03_off()
457 		return -EINVAL;  in s6d7aa0_get_modes()
459 	mode = drm_mode_duplicate(connector->dev, ctx->desc->drm_mode);  in s6d7aa0_get_modes()
461 		return -ENOMEM;  in s6d7aa0_get_modes()
465 	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;  in s6d7aa0_get_modes()
466 	connector->display_info.width_mm = mode->width_mm;  in s6d7aa0_get_modes()
467 	connector->display_info.height_mm = mode->height_mm;  in s6d7aa0_get_modes()
468 	connector->display_info.bus_flags = ctx->desc->bus_flags;  in s6d7aa0_get_modes()
483 	struct device *dev = &dsi->dev;  in s6d7aa0_probe()
489 		return -ENOMEM;  in s6d7aa0_probe()
491 	ctx->desc = of_device_get_match_data(dev);  in s6d7aa0_probe()
492 	if (!ctx->desc)  in s6d7aa0_probe()
493 		return -ENODEV;  in s6d7aa0_probe()
495 	ctx->supplies[0].supply = "power";  in s6d7aa0_probe()
496 	ctx->supplies[1].supply = "vmipi";  in s6d7aa0_probe()
497 	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),  in s6d7aa0_probe()
498 					      ctx->supplies);  in s6d7aa0_probe()
502 	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);  in s6d7aa0_probe()
503 	if (IS_ERR(ctx->reset_gpio))  in s6d7aa0_probe()
504 		return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),  in s6d7aa0_probe()
505 				     "Failed to get reset-gpios\n");  in s6d7aa0_probe()
507 	ctx->dsi = dsi;  in s6d7aa0_probe()
510 	dsi->lanes = 4;  in s6d7aa0_probe()
511 	dsi->format = MIPI_DSI_FMT_RGB888;  in s6d7aa0_probe()
512 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST  in s6d7aa0_probe()
513 		| ctx->desc->mode_flags;  in s6d7aa0_probe()
515 	drm_panel_init(&ctx->panel, dev, &s6d7aa0_panel_funcs,  in s6d7aa0_probe()
517 	ctx->panel.prepare_prev_first = true;  in s6d7aa0_probe()
519 	ret = drm_panel_of_backlight(&ctx->panel);  in s6d7aa0_probe()
523 	/* Use DSI-based backlight as fallback if available */  in s6d7aa0_probe()
524 	if (ctx->desc->has_backlight && !ctx->panel.backlight) {  in s6d7aa0_probe()
525 		ctx->panel.backlight = s6d7aa0_create_backlight(dsi);  in s6d7aa0_probe()
526 		if (IS_ERR(ctx->panel.backlight))  in s6d7aa0_probe()
527 			return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),  in s6d7aa0_probe()
531 	drm_panel_add(&ctx->panel);  in s6d7aa0_probe()
536 		drm_panel_remove(&ctx->panel);  in s6d7aa0_probe()
550 		dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);  in s6d7aa0_remove()
552 	drm_panel_remove(&ctx->panel);  in s6d7aa0_remove()
576 		.name = "panel-samsung-s6d7aa0",
583 MODULE_DESCRIPTION("Samsung S6D7AA0 MIPI-DSI LCD controller driver");