1 // SPDX-License-Identifier: GPL-2.0
3  * Xinpeng xpp055c272 5.5" MIPI-DSI panel driver
8  * Rockteck jh057n00900 5.5" MIPI-DSI panel driver
21 #include <linux/media-bus-format.h>
54 	struct regulator *iovcc;  member
73 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in xpp055c272_init_sequence()
74 	struct device *dev = ctx->dev;  in xpp055c272_init_sequence()
144 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in xpp055c272_unprepare()
147 	if (!ctx->prepared)  in xpp055c272_unprepare()
152 		dev_err(ctx->dev, "failed to set display off: %d\n", ret);  in xpp055c272_unprepare()
156 		dev_err(ctx->dev, "failed to enter sleep mode: %d\n", ret);  in xpp055c272_unprepare()
160 	regulator_disable(ctx->iovcc);  in xpp055c272_unprepare()
161 	regulator_disable(ctx->vci);  in xpp055c272_unprepare()
163 	ctx->prepared = false;  in xpp055c272_unprepare()
171 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in xpp055c272_prepare()
174 	if (ctx->prepared)  in xpp055c272_prepare()
177 	dev_dbg(ctx->dev, "Resetting the panel\n");  in xpp055c272_prepare()
178 	ret = regulator_enable(ctx->vci);  in xpp055c272_prepare()
180 		dev_err(ctx->dev, "Failed to enable vci supply: %d\n", ret);  in xpp055c272_prepare()
183 	ret = regulator_enable(ctx->iovcc);  in xpp055c272_prepare()
185 		dev_err(ctx->dev, "Failed to enable iovcc supply: %d\n", ret);  in xpp055c272_prepare()
189 	gpiod_set_value_cansleep(ctx->reset_gpio, 1);  in xpp055c272_prepare()
192 	gpiod_set_value_cansleep(ctx->reset_gpio, 0);  in xpp055c272_prepare()
199 		dev_err(ctx->dev, "Panel init sequence failed: %d\n", ret);  in xpp055c272_prepare()
205 		dev_err(ctx->dev, "Failed to exit sleep mode: %d\n", ret);  in xpp055c272_prepare()
214 		dev_err(ctx->dev, "Failed to set display on: %d\n", ret);  in xpp055c272_prepare()
220 	ctx->prepared = true;  in xpp055c272_prepare()
225 	regulator_disable(ctx->iovcc);  in xpp055c272_prepare()
227 	regulator_disable(ctx->vci);  in xpp055c272_prepare()
251 	mode = drm_mode_duplicate(connector->dev, &default_mode);  in xpp055c272_get_modes()
253 		dev_err(ctx->dev, "Failed to add mode %ux%u@%u\n",  in xpp055c272_get_modes()
256 		return -ENOMEM;  in xpp055c272_get_modes()
261 	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;  in xpp055c272_get_modes()
262 	connector->display_info.width_mm = mode->width_mm;  in xpp055c272_get_modes()
263 	connector->display_info.height_mm = mode->height_mm;  in xpp055c272_get_modes()
277 	struct device *dev = &dsi->dev;  in xpp055c272_probe()
283 		return -ENOMEM;  in xpp055c272_probe()
285 	ctx->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);  in xpp055c272_probe()
286 	if (IS_ERR(ctx->reset_gpio)) {  in xpp055c272_probe()
288 		return PTR_ERR(ctx->reset_gpio);  in xpp055c272_probe()
291 	ctx->vci = devm_regulator_get(dev, "vci");  in xpp055c272_probe()
292 	if (IS_ERR(ctx->vci)) {  in xpp055c272_probe()
293 		ret = PTR_ERR(ctx->vci);  in xpp055c272_probe()
294 		if (ret != -EPROBE_DEFER)  in xpp055c272_probe()
299 	ctx->iovcc = devm_regulator_get(dev, "iovcc");  in xpp055c272_probe()
300 	if (IS_ERR(ctx->iovcc)) {  in xpp055c272_probe()
301 		ret = PTR_ERR(ctx->iovcc);  in xpp055c272_probe()
302 		if (ret != -EPROBE_DEFER)  in xpp055c272_probe()
303 			dev_err(dev, "Failed to request iovcc regulator: %d\n", ret);  in xpp055c272_probe()
309 	ctx->dev = dev;  in xpp055c272_probe()
311 	dsi->lanes = 4;  in xpp055c272_probe()
312 	dsi->format = MIPI_DSI_FMT_RGB888;  in xpp055c272_probe()
313 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |  in xpp055c272_probe()
316 	drm_panel_init(&ctx->panel, &dsi->dev, &xpp055c272_funcs,  in xpp055c272_probe()
319 	ret = drm_panel_of_backlight(&ctx->panel);  in xpp055c272_probe()
323 	drm_panel_add(&ctx->panel);  in xpp055c272_probe()
328 		drm_panel_remove(&ctx->panel);  in xpp055c272_probe()
340 	ret = drm_panel_unprepare(&ctx->panel);  in xpp055c272_shutdown()
342 		dev_err(&dsi->dev, "Failed to unprepare panel: %d\n", ret);  in xpp055c272_shutdown()
344 	ret = drm_panel_disable(&ctx->panel);  in xpp055c272_shutdown()
346 		dev_err(&dsi->dev, "Failed to disable panel: %d\n", ret);  in xpp055c272_shutdown()
358 		dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);  in xpp055c272_remove()
360 	drm_panel_remove(&ctx->panel);  in xpp055c272_remove()
373 		.name = "panel-xinpeng-xpp055c272",
382 MODULE_AUTHOR("Heiko Stuebner <heiko.stuebner@theobroma-systems.com>");