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, struct drm_bridge_state *prev)  in tdp158_enable()  argument
24 	struct tdp158 *tdp158 = bridge->driver_private;  in tdp158_enable()
26 	err = regulator_enable(tdp158->vcc);  in tdp158_enable()
28 		dev_err(tdp158->dev, "failed to enable vcc: %d", err);  in tdp158_enable()
30 	err = regulator_enable(tdp158->vdd);  in tdp158_enable()
32 		dev_err(tdp158->dev, "failed to enable vdd: %d", err);  in tdp158_enable()
34 	gpiod_set_value_cansleep(tdp158->enable, 1);  in tdp158_enable()
37 static void tdp158_disable(struct drm_bridge *bridge, struct drm_bridge_state *prev)  in tdp158_disable()  argument
39 	struct tdp158 *tdp158 = bridge->driver_private;  in tdp158_disable()
41 	gpiod_set_value_cansleep(tdp158->enable, 0);  in tdp158_disable()
42 	regulator_disable(tdp158->vdd);  in tdp158_disable()
43 	regulator_disable(tdp158->vcc);  in tdp158_disable()
46 static int tdp158_attach(struct drm_bridge *bridge, enum drm_bridge_attach_flags flags)  in tdp158_attach()  argument
48 	struct tdp158 *tdp158 = bridge->driver_private;  in tdp158_attach()
50 	return drm_bridge_attach(bridge->encoder, tdp158->next, bridge, flags);  in tdp158_attach()
65 	struct device *dev = &client->dev;  in tdp158_probe()
69 		return -ENOMEM;  in tdp158_probe()
71 	tdp158->next = devm_drm_of_get_bridge(dev, dev->of_node, 1, 0);  in tdp158_probe()
72 	if (IS_ERR(tdp158->next))  in tdp158_probe()
73 		return dev_err_probe(dev, PTR_ERR(tdp158->next), "missing bridge");  in tdp158_probe()
75 	tdp158->vcc = devm_regulator_get(dev, "vcc");  in tdp158_probe()
76 	if (IS_ERR(tdp158->vcc))  in tdp158_probe()
77 		return dev_err_probe(dev, PTR_ERR(tdp158->vcc), "vcc");  in tdp158_probe()
79 	tdp158->vdd = devm_regulator_get(dev, "vdd");  in tdp158_probe()
80 	if (IS_ERR(tdp158->vdd))  in tdp158_probe()
81 		return dev_err_probe(dev, PTR_ERR(tdp158->vdd), "vdd");  in tdp158_probe()
83 	tdp158->enable = devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_LOW);  in tdp158_probe()
84 	if (IS_ERR(tdp158->enable))  in tdp158_probe()
85 		return dev_err_probe(dev, PTR_ERR(tdp158->enable), "enable");  in tdp158_probe()
87 	tdp158->bridge.of_node = dev->of_node;  in tdp158_probe()
88 	tdp158->bridge.funcs = &tdp158_bridge_funcs;  in tdp158_probe()
89 	tdp158->bridge.driver_private = tdp158;  in tdp158_probe()
90 	tdp158->dev = dev;  in tdp158_probe()
92 	return devm_drm_bridge_add(dev, &tdp158->bridge);  in tdp158_probe()