1 // SPDX-License-Identifier: GPL-2.0
3  * NV3051D MIPI-DSI panel driver for Anbernic RG353x
8  * Elida kd35t133 3.5" MIPI-DSI panel driver
14 #include <linux/media-bus-format.h>
36 	struct drm_panel panel;  member
42 static inline struct panel_nv3051d *panel_to_panelnv3051d(struct drm_panel *panel)  in panel_to_panelnv3051d()  argument
44 	return container_of(panel, struct panel_nv3051d, panel);  in panel_to_panelnv3051d()
49 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in panel_nv3051d_init_sequence()
241 	dev_dbg(ctx->dev, "Panel init sequence done\n");  in panel_nv3051d_init_sequence()
246 static int panel_nv3051d_unprepare(struct drm_panel *panel)  in panel_nv3051d_unprepare()  argument
248 	struct panel_nv3051d *ctx = panel_to_panelnv3051d(panel);  in panel_nv3051d_unprepare()
249 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in panel_nv3051d_unprepare()
254 		dev_err(ctx->dev, "failed to set display off: %d\n", ret);  in panel_nv3051d_unprepare()
260 		dev_err(ctx->dev, "failed to enter sleep mode: %d\n", ret);  in panel_nv3051d_unprepare()
266 	gpiod_set_value_cansleep(ctx->reset_gpio, 1);  in panel_nv3051d_unprepare()
268 	regulator_disable(ctx->vdd);  in panel_nv3051d_unprepare()
273 static int panel_nv3051d_prepare(struct drm_panel *panel)  in panel_nv3051d_prepare()  argument
275 	struct panel_nv3051d *ctx = panel_to_panelnv3051d(panel);  in panel_nv3051d_prepare()
276 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in panel_nv3051d_prepare()
279 	dev_dbg(ctx->dev, "Resetting the panel\n");  in panel_nv3051d_prepare()
280 	ret = regulator_enable(ctx->vdd);  in panel_nv3051d_prepare()
282 		dev_err(ctx->dev, "Failed to enable vdd supply: %d\n", ret);  in panel_nv3051d_prepare()
287 	gpiod_set_value_cansleep(ctx->reset_gpio, 1);  in panel_nv3051d_prepare()
289 	gpiod_set_value_cansleep(ctx->reset_gpio, 0);  in panel_nv3051d_prepare()
294 		dev_err(ctx->dev, "Panel init sequence failed: %d\n", ret);  in panel_nv3051d_prepare()
300 		dev_err(ctx->dev, "Failed to exit sleep mode: %d\n", ret);  in panel_nv3051d_prepare()
308 		dev_err(ctx->dev, "Failed to set display on: %d\n", ret);  in panel_nv3051d_prepare()
317 	regulator_disable(ctx->vdd);  in panel_nv3051d_prepare()
321 static int panel_nv3051d_get_modes(struct drm_panel *panel,  in panel_nv3051d_get_modes()  argument
324 	struct panel_nv3051d *ctx = panel_to_panelnv3051d(panel);  in panel_nv3051d_get_modes()
325 	const struct nv3051d_panel_info *panel_info = ctx->panel_info;  in panel_nv3051d_get_modes()
329 	for (i = 0; i < panel_info->num_modes; i++) {  in panel_nv3051d_get_modes()
330 		mode = drm_mode_duplicate(connector->dev,  in panel_nv3051d_get_modes()
331 					  &panel_info->display_modes[i]);  in panel_nv3051d_get_modes()
333 			return -ENOMEM;  in panel_nv3051d_get_modes()
337 		mode->type = DRM_MODE_TYPE_DRIVER;  in panel_nv3051d_get_modes()
338 		if (panel_info->num_modes == 1)  in panel_nv3051d_get_modes()
339 			mode->type |= DRM_MODE_TYPE_PREFERRED;  in panel_nv3051d_get_modes()
344 	connector->display_info.bpc = 8;  in panel_nv3051d_get_modes()
345 	connector->display_info.width_mm = panel_info->width_mm;  in panel_nv3051d_get_modes()
346 	connector->display_info.height_mm = panel_info->height_mm;  in panel_nv3051d_get_modes()
347 	connector->display_info.bus_flags = panel_info->bus_flags;  in panel_nv3051d_get_modes()
349 	return panel_info->num_modes;  in panel_nv3051d_get_modes()
360 	struct device *dev = &dsi->dev;  in panel_nv3051d_probe()
366 		return -ENOMEM;  in panel_nv3051d_probe()
368 	ctx->dev = dev;  in panel_nv3051d_probe()
370 	ctx->panel_info = of_device_get_match_data(dev);  in panel_nv3051d_probe()
371 	if (!ctx->panel_info)  in panel_nv3051d_probe()
372 		return -EINVAL;  in panel_nv3051d_probe()
374 	ctx->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);  in panel_nv3051d_probe()
375 	if (IS_ERR(ctx->reset_gpio)) {  in panel_nv3051d_probe()
377 		return PTR_ERR(ctx->reset_gpio);  in panel_nv3051d_probe()
380 	ctx->vdd = devm_regulator_get(dev, "vdd");  in panel_nv3051d_probe()
381 	if (IS_ERR(ctx->vdd)) {  in panel_nv3051d_probe()
382 		ret = PTR_ERR(ctx->vdd);  in panel_nv3051d_probe()
383 		if (ret != -EPROBE_DEFER)  in panel_nv3051d_probe()
390 	dsi->lanes = 4;  in panel_nv3051d_probe()
391 	dsi->format = MIPI_DSI_FMT_RGB888;  in panel_nv3051d_probe()
392 	dsi->mode_flags = ctx->panel_info->mode_flags;  in panel_nv3051d_probe()
394 	drm_panel_init(&ctx->panel, &dsi->dev, &panel_nv3051d_funcs,  in panel_nv3051d_probe()
397 	ret = drm_panel_of_backlight(&ctx->panel);  in panel_nv3051d_probe()
401 	drm_panel_add(&ctx->panel);  in panel_nv3051d_probe()
406 		drm_panel_remove(&ctx->panel);  in panel_nv3051d_probe()
418 	ret = drm_panel_unprepare(&ctx->panel);  in panel_nv3051d_shutdown()
420 		dev_err(&dsi->dev, "Failed to unprepare panel: %d\n", ret);  in panel_nv3051d_shutdown()
422 	ret = drm_panel_disable(&ctx->panel);  in panel_nv3051d_shutdown()
424 		dev_err(&dsi->dev, "Failed to disable panel: %d\n", ret);  in panel_nv3051d_shutdown()
436 		dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);  in panel_nv3051d_remove()
438 	drm_panel_remove(&ctx->panel);  in panel_nv3051d_remove()
527 	{ .compatible = "anbernic,rg351v-panel", .data = &nv3051d_rg351v_info },
528 	{ .compatible = "anbernic,rg353p-panel", .data = &nv3051d_rg353p_info },
529 	{ .compatible = "powkiddy,rk2023-panel", .data = &nv3051d_rk2023_info },
536 		.name = "panel-newvision-nv3051d",