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>
26 /* Manufacturer specific Commands send via DSI */
51 	struct drm_panel panel;  member
57 static inline struct xpp055c272 *panel_to_xpp055c272(struct drm_panel *panel)  in panel_to_xpp055c272()  argument
59 	return container_of(panel, struct xpp055c272, panel);  in panel_to_xpp055c272()
64 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in xpp055c272_init_sequence()
65 	struct device *dev = ctx->dev;  in xpp055c272_init_sequence()
68 	 * Init sequence was supplied by the panel vendor without much  in xpp055c272_init_sequence()
128 	dev_dbg(dev, "Panel init sequence done\n");  in xpp055c272_init_sequence()
132 static int xpp055c272_unprepare(struct drm_panel *panel)  in xpp055c272_unprepare()  argument
134 	struct xpp055c272 *ctx = panel_to_xpp055c272(panel);  in xpp055c272_unprepare()
135 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in xpp055c272_unprepare()
140 		dev_err(ctx->dev, "failed to set display off: %d\n", ret);  in xpp055c272_unprepare()
144 		dev_err(ctx->dev, "failed to enter sleep mode: %d\n", ret);  in xpp055c272_unprepare()
148 	regulator_disable(ctx->iovcc);  in xpp055c272_unprepare()
149 	regulator_disable(ctx->vci);  in xpp055c272_unprepare()
154 static int xpp055c272_prepare(struct drm_panel *panel)  in xpp055c272_prepare()  argument
156 	struct xpp055c272 *ctx = panel_to_xpp055c272(panel);  in xpp055c272_prepare()
157 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in xpp055c272_prepare()
160 	dev_dbg(ctx->dev, "Resetting the panel\n");  in xpp055c272_prepare()
161 	ret = regulator_enable(ctx->vci);  in xpp055c272_prepare()
163 		dev_err(ctx->dev, "Failed to enable vci supply: %d\n", ret);  in xpp055c272_prepare()
166 	ret = regulator_enable(ctx->iovcc);  in xpp055c272_prepare()
168 		dev_err(ctx->dev, "Failed to enable iovcc supply: %d\n", ret);  in xpp055c272_prepare()
172 	gpiod_set_value_cansleep(ctx->reset_gpio, 1);  in xpp055c272_prepare()
175 	gpiod_set_value_cansleep(ctx->reset_gpio, 0);  in xpp055c272_prepare()
182 		dev_err(ctx->dev, "Panel init sequence failed: %d\n", ret);  in xpp055c272_prepare()
188 		dev_err(ctx->dev, "Failed to exit sleep mode: %d\n", ret);  in xpp055c272_prepare()
197 		dev_err(ctx->dev, "Failed to set display on: %d\n", ret);  in xpp055c272_prepare()
206 	regulator_disable(ctx->iovcc);  in xpp055c272_prepare()
208 	regulator_disable(ctx->vci);  in xpp055c272_prepare()
226 static int xpp055c272_get_modes(struct drm_panel *panel,  in xpp055c272_get_modes()  argument
229 	struct xpp055c272 *ctx = panel_to_xpp055c272(panel);  in xpp055c272_get_modes()
232 	mode = drm_mode_duplicate(connector->dev, &default_mode);  in xpp055c272_get_modes()
234 		dev_err(ctx->dev, "Failed to add mode %ux%u@%u\n",  in xpp055c272_get_modes()
237 		return -ENOMEM;  in xpp055c272_get_modes()
242 	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;  in xpp055c272_get_modes()
243 	connector->display_info.width_mm = mode->width_mm;  in xpp055c272_get_modes()
244 	connector->display_info.height_mm = mode->height_mm;  in xpp055c272_get_modes()
258 	struct device *dev = &dsi->dev;  in xpp055c272_probe()
264 		return -ENOMEM;  in xpp055c272_probe()
266 	ctx->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);  in xpp055c272_probe()
267 	if (IS_ERR(ctx->reset_gpio))  in xpp055c272_probe()
268 		return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),  in xpp055c272_probe()
271 	ctx->vci = devm_regulator_get(dev, "vci");  in xpp055c272_probe()
272 	if (IS_ERR(ctx->vci))  in xpp055c272_probe()
273 		return dev_err_probe(dev, PTR_ERR(ctx->vci),  in xpp055c272_probe()
276 	ctx->iovcc = devm_regulator_get(dev, "iovcc");  in xpp055c272_probe()
277 	if (IS_ERR(ctx->iovcc))  in xpp055c272_probe()
278 		return dev_err_probe(dev, PTR_ERR(ctx->iovcc),  in xpp055c272_probe()
283 	ctx->dev = dev;  in xpp055c272_probe()
285 	dsi->lanes = 4;  in xpp055c272_probe()
286 	dsi->format = MIPI_DSI_FMT_RGB888;  in xpp055c272_probe()
287 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |  in xpp055c272_probe()
290 	drm_panel_init(&ctx->panel, &dsi->dev, &xpp055c272_funcs,  in xpp055c272_probe()
293 	ret = drm_panel_of_backlight(&ctx->panel);  in xpp055c272_probe()
297 	drm_panel_add(&ctx->panel);  in xpp055c272_probe()
302 		drm_panel_remove(&ctx->panel);  in xpp055c272_probe()
316 		dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);  in xpp055c272_remove()
318 	drm_panel_remove(&ctx->panel);  in xpp055c272_remove()
329 		.name = "panel-xinpeng-xpp055c272",
337 MODULE_AUTHOR("Heiko Stuebner <heiko.stuebner@theobroma-systems.com>");
338 MODULE_DESCRIPTION("DRM driver for Xinpeng xpp055c272 MIPI DSI panel");