1 // SPDX-License-Identifier: GPL-2.0-or-later
8 #include <linux/media-bus-format.h>
41 	return drm_bridge_attach(bridge->encoder, lvds_codec->panel_bridge,  in lvds_codec_attach()
50 	ret = regulator_enable(lvds_codec->vcc);  in lvds_codec_enable()
52 		dev_err(lvds_codec->dev,  in lvds_codec_enable()
57 	if (lvds_codec->powerdown_gpio)  in lvds_codec_enable()
58 		gpiod_set_value_cansleep(lvds_codec->powerdown_gpio, 0);  in lvds_codec_enable()
66 	if (lvds_codec->powerdown_gpio)  in lvds_codec_disable()
67 		gpiod_set_value_cansleep(lvds_codec->powerdown_gpio, 1);  in lvds_codec_disable()
69 	ret = regulator_disable(lvds_codec->vcc);  in lvds_codec_disable()
71 		dev_err(lvds_codec->dev,  in lvds_codec_disable()
94 	input_fmts[0] = lvds_codec->bus_format;  in lvds_codec_atomic_get_input_bus_fmts()
112 	struct device *dev = &pdev->dev;  in lvds_codec_probe()
122 		return -ENOMEM;  in lvds_codec_probe()
124 	lvds_codec->dev = &pdev->dev;  in lvds_codec_probe()
125 	lvds_codec->connector_type = (uintptr_t)of_device_get_match_data(dev);  in lvds_codec_probe()
127 	lvds_codec->vcc = devm_regulator_get(lvds_codec->dev, "power");  in lvds_codec_probe()
128 	if (IS_ERR(lvds_codec->vcc))  in lvds_codec_probe()
129 		return dev_err_probe(dev, PTR_ERR(lvds_codec->vcc),  in lvds_codec_probe()
132 	lvds_codec->powerdown_gpio = devm_gpiod_get_optional(dev, "powerdown",  in lvds_codec_probe()
134 	if (IS_ERR(lvds_codec->powerdown_gpio))  in lvds_codec_probe()
135 		return dev_err_probe(dev, PTR_ERR(lvds_codec->powerdown_gpio),  in lvds_codec_probe()
139 	panel_node = of_graph_get_remote_node(dev->of_node, 1, 0);  in lvds_codec_probe()
142 		return -ENXIO;  in lvds_codec_probe()
152 	lvds_codec->panel_bridge =  in lvds_codec_probe()
154 						lvds_codec->connector_type);  in lvds_codec_probe()
155 	if (IS_ERR(lvds_codec->panel_bridge))  in lvds_codec_probe()
156 		return PTR_ERR(lvds_codec->panel_bridge);  in lvds_codec_probe()
158 	lvds_codec->bridge.funcs = &funcs;  in lvds_codec_probe()
161 	 * Decoder input LVDS format is a property of the decoder chip or even  in lvds_codec_probe()
162 	 * its strapping. Handle data-mapping the same way lvds-panel does. In  in lvds_codec_probe()
163 	 * case data-mapping is not present, do nothing, since there are still  in lvds_codec_probe()
166 	if (lvds_codec->connector_type != DRM_MODE_CONNECTOR_LVDS) {  in lvds_codec_probe()
167 		bus_node = of_graph_get_endpoint_by_regs(dev->of_node, 0, 0);  in lvds_codec_probe()
170 			return -ENXIO;  in lvds_codec_probe()
175 		if (ret == -ENODEV) {  in lvds_codec_probe()
176 			dev_warn(dev, "missing 'data-mapping' DT property\n");  in lvds_codec_probe()
178 			dev_err(dev, "invalid 'data-mapping' DT property\n");  in lvds_codec_probe()
181 			lvds_codec->bus_format = ret;  in lvds_codec_probe()
184 		lvds_codec->bus_format = MEDIA_BUS_FMT_RGB888_1X24;  in lvds_codec_probe()
192 	if (lvds_codec->connector_type == DRM_MODE_CONNECTOR_LVDS &&  in lvds_codec_probe()
193 	    !of_property_read_u32(dev->of_node, "pclk-sample", &val)) {  in lvds_codec_probe()
194 		lvds_codec->timings.input_bus_flags = val ?  in lvds_codec_probe()
204 	lvds_codec->bridge.of_node = dev->of_node;  in lvds_codec_probe()
205 	lvds_codec->bridge.timings = &lvds_codec->timings;  in lvds_codec_probe()
206 	drm_bridge_add(&lvds_codec->bridge);  in lvds_codec_probe()
217 	drm_bridge_remove(&lvds_codec->bridge);  in lvds_codec_remove()
222 		.compatible = "lvds-decoder",
226 		.compatible = "lvds-encoder",
241 		.name		= "lvds-codec",
248 MODULE_DESCRIPTION("LVDS encoders and decoders");