1 // SPDX-License-Identifier: GPL-2.0
5  * Found in the Samsung Galaxy Beam GT-I8350 mobile phone.
16 #include <linux/media-bus-format.h>
49  * struct db7430 - state container for a panel controlled by the DB7430
63 	/** @reset: reset GPIO line */
64 	struct gpio_desc *reset;  member
95 	struct mipi_dbi *dbi = &db->dbi;  in db7430_power_on()
99 	ret = regulator_bulk_enable(ARRAY_SIZE(db->regulators),  in db7430_power_on()
100 				    db->regulators);  in db7430_power_on()
102 		dev_err(db->dev, "failed to enable regulators: %d\n", ret);  in db7430_power_on()
107 	/* Assert reset >=1 ms */  in db7430_power_on()
108 	gpiod_set_value_cansleep(db->reset, 1);  in db7430_power_on()
110 	/* De-assert reset */  in db7430_power_on()
111 	gpiod_set_value_cansleep(db->reset, 0);  in db7430_power_on()
112 	/* Wait >= 10 ms */  in db7430_power_on()
114 	dev_dbg(db->dev, "de-asserted RESET\n");  in db7430_power_on()
170 	/* Go into RESET and disable regulators */  in db7430_power_off()
171 	gpiod_set_value_cansleep(db->reset, 1);  in db7430_power_off()
172 	return regulator_bulk_disable(ARRAY_SIZE(db->regulators),  in db7430_power_off()
173 				      db->regulators);  in db7430_power_off()
184 	struct mipi_dbi *dbi = &db->dbi;  in db7430_disable()
202 	struct mipi_dbi *dbi = &db->dbi;  in db7430_enable()
208 	/* NVM (non-volatile memory) load sequence */  in db7430_enable()
227  * db7430_get_modes() - return the mode
238 	mode = drm_mode_duplicate(connector->dev, &db7430_480_800_mode);  in db7430_get_modes()
240 		dev_err(db->dev, "failed to add mode\n");  in db7430_get_modes()
241 		return -ENOMEM;  in db7430_get_modes()
244 	connector->display_info.bpc = 8;  in db7430_get_modes()
245 	connector->display_info.width_mm = mode->width_mm;  in db7430_get_modes()
246 	connector->display_info.height_mm = mode->height_mm;  in db7430_get_modes()
247 	connector->display_info.bus_flags =  in db7430_get_modes()
249 	drm_display_info_set_bus_formats(&connector->display_info,  in db7430_get_modes()
253 	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;  in db7430_get_modes()
270 	struct device *dev = &spi->dev;  in db7430_probe()
276 		return -ENOMEM;  in db7430_probe()
277 	db->dev = dev;  in db7430_probe()
283 	db->regulators[0].supply = "vci";  in db7430_probe()
284 	db->regulators[1].supply = "vccio";  in db7430_probe()
286 				      ARRAY_SIZE(db->regulators),  in db7430_probe()
287 				      db->regulators);  in db7430_probe()
291 	db->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);  in db7430_probe()
292 	if (IS_ERR(db->reset)) {  in db7430_probe()
293 		ret = PTR_ERR(db->reset);  in db7430_probe()
294 		return dev_err_probe(dev, ret, "no RESET GPIO\n");  in db7430_probe()
297 	ret = mipi_dbi_spi_init(spi, &db->dbi, NULL);  in db7430_probe()
301 	drm_panel_init(&db->panel, dev, &db7430_drm_funcs,  in db7430_probe()
305 	ret = drm_panel_of_backlight(&db->panel);  in db7430_probe()
311 	drm_panel_add(&db->panel);  in db7430_probe()
321 	drm_panel_remove(&db->panel);  in db7430_remove()
326  * so list the different variants here and add per-variant data if needed.
338 		.name	= "db7430-panel",