76 static int ps8640_bridge_vdo_control(struct ps8640 *ps_bridge,  in ps8640_bridge_vdo_control()  argument
79 	struct i2c_client *client = ps_bridge->page[PAGE3_DSI_CNTL1];  in ps8640_bridge_vdo_control()
95 static void ps8640_bridge_poweron(struct ps8640 *ps_bridge)  in ps8640_bridge_poweron()  argument
97 	struct i2c_client *client = ps_bridge->page[PAGE2_TOP_CNTL];  in ps8640_bridge_poweron()
101 	if (ps_bridge->powered)  in ps8640_bridge_poweron()
104 	ret = regulator_bulk_enable(ARRAY_SIZE(ps_bridge->supplies),  in ps8640_bridge_poweron()
105 				    ps_bridge->supplies);  in ps8640_bridge_poweron()
111 	gpiod_set_value(ps_bridge->gpio_powerdown, 0);  in ps8640_bridge_poweron()
112 	gpiod_set_value(ps_bridge->gpio_reset, 1);  in ps8640_bridge_poweron()
114 	gpiod_set_value(ps_bridge->gpio_reset, 0);  in ps8640_bridge_poweron()
166 	ps_bridge->powered = true;  in ps8640_bridge_poweron()
171 	regulator_bulk_disable(ARRAY_SIZE(ps_bridge->supplies),  in ps8640_bridge_poweron()
172 			       ps_bridge->supplies);  in ps8640_bridge_poweron()
175 static void ps8640_bridge_poweroff(struct ps8640 *ps_bridge)  in ps8640_bridge_poweroff()  argument
179 	if (!ps_bridge->powered)  in ps8640_bridge_poweroff()
182 	gpiod_set_value(ps_bridge->gpio_reset, 1);  in ps8640_bridge_poweroff()
183 	gpiod_set_value(ps_bridge->gpio_powerdown, 1);  in ps8640_bridge_poweroff()
184 	ret = regulator_bulk_disable(ARRAY_SIZE(ps_bridge->supplies),  in ps8640_bridge_poweroff()
185 				     ps_bridge->supplies);  in ps8640_bridge_poweroff()
189 	ps_bridge->powered = false;  in ps8640_bridge_poweroff()
194 	struct ps8640 *ps_bridge = bridge_to_ps8640(bridge);  in ps8640_pre_enable()  local
197 	ps8640_bridge_poweron(ps_bridge);  in ps8640_pre_enable()
199 	ret = ps8640_bridge_vdo_control(ps_bridge, ENABLE);  in ps8640_pre_enable()
201 		ps8640_bridge_poweroff(ps_bridge);  in ps8640_pre_enable()
206 	struct ps8640 *ps_bridge = bridge_to_ps8640(bridge);  in ps8640_post_disable()  local
208 	ps8640_bridge_vdo_control(ps_bridge, DISABLE);  in ps8640_post_disable()
209 	ps8640_bridge_poweroff(ps_bridge);  in ps8640_post_disable()
215 	struct ps8640 *ps_bridge = bridge_to_ps8640(bridge);  in ps8640_bridge_attach()  local
216 	struct device *dev = &ps_bridge->page[0]->dev;  in ps8640_bridge_attach()
251 	ps_bridge->dsi = dsi;  in ps8640_bridge_attach()
263 	return drm_bridge_attach(bridge->encoder, ps_bridge->panel_bridge,  in ps8640_bridge_attach()
264 				 &ps_bridge->bridge, flags);  in ps8640_bridge_attach()
274 	struct ps8640 *ps_bridge = bridge_to_ps8640(bridge);  in ps8640_bridge_get_edid()  local
275 	bool poweroff = !ps_bridge->powered;  in ps8640_bridge_get_edid()
293 			    ps_bridge->page[PAGE0_DP_CNTL]->adapter);  in ps8640_bridge_get_edid()
316 	struct ps8640 *ps_bridge;  in ps8640_probe()  local
321 	ps_bridge = devm_kzalloc(dev, sizeof(*ps_bridge), GFP_KERNEL);  in ps8640_probe()
322 	if (!ps_bridge)  in ps8640_probe()
332 	ps_bridge->panel_bridge = devm_drm_panel_bridge_add(dev, panel);  in ps8640_probe()
333 	if (IS_ERR(ps_bridge->panel_bridge))  in ps8640_probe()
334 		return PTR_ERR(ps_bridge->panel_bridge);  in ps8640_probe()
336 	ps_bridge->supplies[0].supply = "vdd12";  in ps8640_probe()
337 	ps_bridge->supplies[1].supply = "vdd33";  in ps8640_probe()
338 	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ps_bridge->supplies),  in ps8640_probe()
339 				      ps_bridge->supplies);  in ps8640_probe()
343 	ps_bridge->gpio_powerdown = devm_gpiod_get(&client->dev, "powerdown",  in ps8640_probe()
345 	if (IS_ERR(ps_bridge->gpio_powerdown))  in ps8640_probe()
346 		return PTR_ERR(ps_bridge->gpio_powerdown);  in ps8640_probe()
351 	ps_bridge->gpio_reset = devm_gpiod_get(&client->dev, "reset",  in ps8640_probe()
353 	if (IS_ERR(ps_bridge->gpio_reset))  in ps8640_probe()
354 		return PTR_ERR(ps_bridge->gpio_reset);  in ps8640_probe()
356 	ps_bridge->bridge.funcs = &ps8640_bridge_funcs;  in ps8640_probe()
357 	ps_bridge->bridge.of_node = dev->of_node;  in ps8640_probe()
358 	ps_bridge->bridge.ops = DRM_BRIDGE_OP_EDID;  in ps8640_probe()
359 	ps_bridge->bridge.type = DRM_MODE_CONNECTOR_eDP;  in ps8640_probe()
361 	ps_bridge->page[PAGE0_DP_CNTL] = client;  in ps8640_probe()
363 	for (i = 1; i < ARRAY_SIZE(ps_bridge->page); i++) {  in ps8640_probe()
364 		ps_bridge->page[i] = devm_i2c_new_dummy_device(&client->dev,  in ps8640_probe()
367 		if (IS_ERR(ps_bridge->page[i])) {  in ps8640_probe()
370 			return PTR_ERR(ps_bridge->page[i]);  in ps8640_probe()
374 	i2c_set_clientdata(client, ps_bridge);  in ps8640_probe()
376 	drm_bridge_add(&ps_bridge->bridge);  in ps8640_probe()
383 	struct ps8640 *ps_bridge = i2c_get_clientdata(client);  in ps8640_remove()  local
385 	drm_bridge_remove(&ps_bridge->bridge);  in ps8640_remove()