1 // SPDX-License-Identifier: GPL-2.0-only
13 	struct drm_bridge bridge;  member
15 	struct gpio_desc *enable; // Operation Enable - pin 36  member
21 static void tdp158_enable(struct drm_bridge *bridge,  in tdp158_enable()  argument
25 	struct tdp158 *tdp158 = bridge->driver_private;  in tdp158_enable()
27 	err = regulator_enable(tdp158->vcc);  in tdp158_enable()
29 		dev_err(tdp158->dev, "failed to enable vcc: %d", err);  in tdp158_enable()
31 	err = regulator_enable(tdp158->vdd);  in tdp158_enable()
33 		dev_err(tdp158->dev, "failed to enable vdd: %d", err);  in tdp158_enable()
35 	gpiod_set_value_cansleep(tdp158->enable, 1);  in tdp158_enable()
38 static void tdp158_disable(struct drm_bridge *bridge,  in tdp158_disable()  argument
41 	struct tdp158 *tdp158 = bridge->driver_private;  in tdp158_disable()
43 	gpiod_set_value_cansleep(tdp158->enable, 0);  in tdp158_disable()
44 	regulator_disable(tdp158->vdd);  in tdp158_disable()
45 	regulator_disable(tdp158->vcc);  in tdp158_disable()
48 static int tdp158_attach(struct drm_bridge *bridge, enum drm_bridge_attach_flags flags)  in tdp158_attach()  argument
50 	struct tdp158 *tdp158 = bridge->driver_private;  in tdp158_attach()
52 	return drm_bridge_attach(bridge->encoder, tdp158->next, bridge, flags);  in tdp158_attach()
67 	struct device *dev = &client->dev;  in tdp158_probe()
71 		return -ENOMEM;  in tdp158_probe()
73 	tdp158->next = devm_drm_of_get_bridge(dev, dev->of_node, 1, 0);  in tdp158_probe()
74 	if (IS_ERR(tdp158->next))  in tdp158_probe()
75 		return dev_err_probe(dev, PTR_ERR(tdp158->next), "missing bridge");  in tdp158_probe()
77 	tdp158->vcc = devm_regulator_get(dev, "vcc");  in tdp158_probe()
78 	if (IS_ERR(tdp158->vcc))  in tdp158_probe()
79 		return dev_err_probe(dev, PTR_ERR(tdp158->vcc), "vcc");  in tdp158_probe()
81 	tdp158->vdd = devm_regulator_get(dev, "vdd");  in tdp158_probe()
82 	if (IS_ERR(tdp158->vdd))  in tdp158_probe()
83 		return dev_err_probe(dev, PTR_ERR(tdp158->vdd), "vdd");  in tdp158_probe()
85 	tdp158->enable = devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_LOW);  in tdp158_probe()
86 	if (IS_ERR(tdp158->enable))  in tdp158_probe()
87 		return dev_err_probe(dev, PTR_ERR(tdp158->enable), "enable");  in tdp158_probe()
89 	tdp158->bridge.of_node = dev->of_node;  in tdp158_probe()
90 	tdp158->bridge.funcs = &tdp158_bridge_funcs;  in tdp158_probe()
91 	tdp158->bridge.driver_private = tdp158;  in tdp158_probe()
92 	tdp158->dev = dev;  in tdp158_probe()
94 	return devm_drm_bridge_add(dev, &tdp158->bridge);  in tdp158_probe()