1 // SPDX-License-Identifier: GPL-2.0
3  * Asia Better Technology Ltd. Y030XX067A IPS LCD panel driver
12 #include <linux/media-bus-format.h>
128 	struct regulator *supply;  member
165 	struct device *dev = &priv->spi->dev;  in y030xx067a_prepare()
168 	err = regulator_enable(priv->supply);  in y030xx067a_prepare()
170 		dev_err(dev, "Failed to enable power supply: %d\n", err);  in y030xx067a_prepare()
175 	gpiod_set_value_cansleep(priv->reset_gpio, 1);  in y030xx067a_prepare()
177 	gpiod_set_value_cansleep(priv->reset_gpio, 0);  in y030xx067a_prepare()
180 	err = regmap_multi_reg_write(priv->map, y030xx067a_init_sequence,  in y030xx067a_prepare()
190 	regulator_disable(priv->supply);  in y030xx067a_prepare()
198 	gpiod_set_value_cansleep(priv->reset_gpio, 1);  in y030xx067a_unprepare()
199 	regulator_disable(priv->supply);  in y030xx067a_unprepare()
208 	regmap_set_bits(priv->map, 0x06, REG06_XPSAVE);  in y030xx067a_enable()
210 	if (panel->backlight) {  in y030xx067a_enable()
222 	regmap_clear_bits(priv->map, 0x06, REG06_XPSAVE);  in y030xx067a_disable()
231 	const struct y030xx067a_info *panel_info = priv->panel_info;  in y030xx067a_get_modes()
235 	for (i = 0; i < panel_info->num_modes; i++) {  in y030xx067a_get_modes()
236 		mode = drm_mode_duplicate(connector->dev,  in y030xx067a_get_modes()
237 					  &panel_info->display_modes[i]);  in y030xx067a_get_modes()
239 			return -ENOMEM;  in y030xx067a_get_modes()
243 		mode->type = DRM_MODE_TYPE_DRIVER;  in y030xx067a_get_modes()
244 		if (panel_info->num_modes == 1)  in y030xx067a_get_modes()
245 			mode->type |= DRM_MODE_TYPE_PREFERRED;  in y030xx067a_get_modes()
250 	connector->display_info.bpc = 8;  in y030xx067a_get_modes()
251 	connector->display_info.width_mm = panel_info->width_mm;  in y030xx067a_get_modes()
252 	connector->display_info.height_mm = panel_info->height_mm;  in y030xx067a_get_modes()
254 	drm_display_info_set_bus_formats(&connector->display_info,  in y030xx067a_get_modes()
255 					 &panel_info->bus_format, 1);  in y030xx067a_get_modes()
256 	connector->display_info.bus_flags = panel_info->bus_flags;  in y030xx067a_get_modes()
258 	return panel_info->num_modes;  in y030xx067a_get_modes()
278 	struct device *dev = &spi->dev;  in y030xx067a_probe()
284 		return -ENOMEM;  in y030xx067a_probe()
286 	priv->spi = spi;  in y030xx067a_probe()
289 	priv->map = devm_regmap_init_spi(spi, &y030xx067a_regmap_config);  in y030xx067a_probe()
290 	if (IS_ERR(priv->map)) {  in y030xx067a_probe()
292 		return PTR_ERR(priv->map);  in y030xx067a_probe()
295 	priv->panel_info = of_device_get_match_data(dev);  in y030xx067a_probe()
296 	if (!priv->panel_info)  in y030xx067a_probe()
297 		return -EINVAL;  in y030xx067a_probe()
299 	priv->supply = devm_regulator_get(dev, "power");  in y030xx067a_probe()
300 	if (IS_ERR(priv->supply))  in y030xx067a_probe()
301 		return dev_err_probe(dev, PTR_ERR(priv->supply),  in y030xx067a_probe()
302 				     "Failed to get power supply\n");  in y030xx067a_probe()
304 	priv->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);  in y030xx067a_probe()
305 	if (IS_ERR(priv->reset_gpio))  in y030xx067a_probe()
306 		return dev_err_probe(dev, PTR_ERR(priv->reset_gpio),  in y030xx067a_probe()
309 	drm_panel_init(&priv->panel, dev, &y030xx067a_funcs,  in y030xx067a_probe()
312 	err = drm_panel_of_backlight(&priv->panel);  in y030xx067a_probe()
316 	drm_panel_add(&priv->panel);  in y030xx067a_probe()
325 	drm_panel_remove(&priv->panel);  in y030xx067a_remove()
326 	drm_panel_disable(&priv->panel);  in y030xx067a_remove()
327 	drm_panel_unprepare(&priv->panel);  in y030xx067a_remove()
374 		.name = "abt-y030xx067a",
384 MODULE_DESCRIPTION("Asia Better Technology Ltd. Y030XX067A IPS LCD panel driver");