1 // SPDX-License-Identifier: GPL-2.0
3  * Elida kd35t133 5.5" MIPI-DSI panel driver
8  * Rockteck jh057n00900 5.5" MIPI-DSI panel driver
14 #include <linux/media-bus-format.h>
44 	struct regulator *iovcc;  member
64 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in kd35t133_init_sequence()
65 	struct device *dev = ctx->dev;  in kd35t133_init_sequence()
99 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in kd35t133_unprepare()
102 	if (!ctx->prepared)  in kd35t133_unprepare()
107 		dev_err(ctx->dev, "failed to set display off: %d\n", ret);  in kd35t133_unprepare()
111 		dev_err(ctx->dev, "failed to enter sleep mode: %d\n", ret);  in kd35t133_unprepare()
115 	regulator_disable(ctx->iovcc);  in kd35t133_unprepare()
116 	regulator_disable(ctx->vdd);  in kd35t133_unprepare()
118 	ctx->prepared = false;  in kd35t133_unprepare()
126 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in kd35t133_prepare()
129 	if (ctx->prepared)  in kd35t133_prepare()
132 	dev_dbg(ctx->dev, "Resetting the panel\n");  in kd35t133_prepare()
133 	ret = regulator_enable(ctx->vdd);  in kd35t133_prepare()
135 		dev_err(ctx->dev, "Failed to enable vdd supply: %d\n", ret);  in kd35t133_prepare()
139 	ret = regulator_enable(ctx->iovcc);  in kd35t133_prepare()
141 		dev_err(ctx->dev, "Failed to enable iovcc supply: %d\n", ret);  in kd35t133_prepare()
147 	gpiod_set_value_cansleep(ctx->reset_gpio, 1);  in kd35t133_prepare()
149 	gpiod_set_value_cansleep(ctx->reset_gpio, 0);  in kd35t133_prepare()
155 		dev_err(ctx->dev, "Failed to exit sleep mode: %d\n", ret);  in kd35t133_prepare()
163 		dev_err(ctx->dev, "Panel init sequence failed: %d\n", ret);  in kd35t133_prepare()
169 		dev_err(ctx->dev, "Failed to set display on: %d\n", ret);  in kd35t133_prepare()
175 	ctx->prepared = true;  in kd35t133_prepare()
180 	regulator_disable(ctx->iovcc);  in kd35t133_prepare()
182 	regulator_disable(ctx->vdd);  in kd35t133_prepare()
206 	mode = drm_mode_duplicate(connector->dev, &default_mode);  in kd35t133_get_modes()
208 		dev_err(ctx->dev, "Failed to add mode %ux%u@%u\n",  in kd35t133_get_modes()
211 		return -ENOMEM;  in kd35t133_get_modes()
216 	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;  in kd35t133_get_modes()
217 	connector->display_info.width_mm = mode->width_mm;  in kd35t133_get_modes()
218 	connector->display_info.height_mm = mode->height_mm;  in kd35t133_get_modes()
224 	drm_connector_set_panel_orientation(connector, ctx->orientation);  in kd35t133_get_modes()
233 	return ctx->orientation;  in kd35t133_get_orientation()
245 	struct device *dev = &dsi->dev;  in kd35t133_probe()
251 		return -ENOMEM;  in kd35t133_probe()
253 	ctx->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);  in kd35t133_probe()
254 	if (IS_ERR(ctx->reset_gpio)) {  in kd35t133_probe()
256 		return PTR_ERR(ctx->reset_gpio);  in kd35t133_probe()
259 	ctx->vdd = devm_regulator_get(dev, "vdd");  in kd35t133_probe()
260 	if (IS_ERR(ctx->vdd)) {  in kd35t133_probe()
261 		ret = PTR_ERR(ctx->vdd);  in kd35t133_probe()
262 		if (ret != -EPROBE_DEFER)  in kd35t133_probe()
267 	ctx->iovcc = devm_regulator_get(dev, "iovcc");  in kd35t133_probe()
268 	if (IS_ERR(ctx->iovcc)) {  in kd35t133_probe()
269 		ret = PTR_ERR(ctx->iovcc);  in kd35t133_probe()
270 		if (ret != -EPROBE_DEFER)  in kd35t133_probe()
271 			dev_err(dev, "Failed to request iovcc regulator: %d\n", ret);  in kd35t133_probe()
275 	ret = of_drm_get_panel_orientation(dev->of_node, &ctx->orientation);  in kd35t133_probe()
277 		dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, ret);  in kd35t133_probe()
283 	ctx->dev = dev;  in kd35t133_probe()
285 	dsi->lanes = 1;  in kd35t133_probe()
286 	dsi->format = MIPI_DSI_FMT_RGB888;  in kd35t133_probe()
287 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |  in kd35t133_probe()
291 	drm_panel_init(&ctx->panel, &dsi->dev, &kd35t133_funcs,  in kd35t133_probe()
294 	ret = drm_panel_of_backlight(&ctx->panel);  in kd35t133_probe()
298 	drm_panel_add(&ctx->panel);  in kd35t133_probe()
303 		drm_panel_remove(&ctx->panel);  in kd35t133_probe()
315 	ret = drm_panel_unprepare(&ctx->panel);  in kd35t133_shutdown()
317 		dev_err(&dsi->dev, "Failed to unprepare panel: %d\n", ret);  in kd35t133_shutdown()
319 	ret = drm_panel_disable(&ctx->panel);  in kd35t133_shutdown()
321 		dev_err(&dsi->dev, "Failed to disable panel: %d\n", ret);  in kd35t133_shutdown()
333 		dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);  in kd35t133_remove()
335 	drm_panel_remove(&ctx->panel);  in kd35t133_remove()
346 		.name = "panel-elida-kd35t133",
355 MODULE_AUTHOR("Heiko Stuebner <heiko.stuebner@theobroma-systems.com>");