157 static int _ps8640_wait_hpd_asserted(struct ps8640 *ps_bridge, unsigned long wait_us)  in _ps8640_wait_hpd_asserted()  argument
159 	struct regmap *map = ps_bridge->regmap[PAGE2_TOP_CNTL];  in _ps8640_wait_hpd_asserted()
180 	if (!ret && ps_bridge->need_post_hpd_delay) {  in _ps8640_wait_hpd_asserted()
181 		ps_bridge->need_post_hpd_delay = false;  in _ps8640_wait_hpd_asserted()
190 	struct ps8640 *ps_bridge = aux_to_ps8640(aux);  in ps8640_wait_hpd_asserted()  local
191 	struct device *dev = &ps_bridge->page[PAGE0_DP_CNTL]->dev;  in ps8640_wait_hpd_asserted()
200 	ret = _ps8640_wait_hpd_asserted(ps_bridge, wait_us);  in ps8640_wait_hpd_asserted()
210 	struct ps8640 *ps_bridge = aux_to_ps8640(aux);  in ps8640_aux_transfer_msg()  local
211 	struct regmap *map = ps_bridge->regmap[PAGE0_DP_CNTL];  in ps8640_aux_transfer_msg()
212 	struct device *dev = &ps_bridge->page[PAGE0_DP_CNTL]->dev;  in ps8640_aux_transfer_msg()
343 	struct ps8640 *ps_bridge = aux_to_ps8640(aux);  in ps8640_aux_transfer()  local
344 	struct device *dev = &ps_bridge->page[PAGE0_DP_CNTL]->dev;  in ps8640_aux_transfer()
355 static void ps8640_bridge_vdo_control(struct ps8640 *ps_bridge,  in ps8640_bridge_vdo_control()  argument
358 	struct regmap *map = ps_bridge->regmap[PAGE3_DSI_CNTL1];  in ps8640_bridge_vdo_control()
359 	struct device *dev = &ps_bridge->page[PAGE3_DSI_CNTL1]->dev;  in ps8640_bridge_vdo_control()
373 	struct ps8640 *ps_bridge = dev_get_drvdata(dev);  in ps8640_resume()  local
376 	ret = regulator_bulk_enable(ARRAY_SIZE(ps_bridge->supplies),  in ps8640_resume()
377 				    ps_bridge->supplies);  in ps8640_resume()
383 	gpiod_set_value(ps_bridge->gpio_powerdown, 0);  in ps8640_resume()
384 	gpiod_set_value(ps_bridge->gpio_reset, 1);  in ps8640_resume()
386 	gpiod_set_value(ps_bridge->gpio_reset, 0);  in ps8640_resume()
389 	gpiod_set_value(ps_bridge->gpio_reset, 1);  in ps8640_resume()
391 	gpiod_set_value(ps_bridge->gpio_reset, 0);  in ps8640_resume()
394 	ps_bridge->need_post_hpd_delay = true;  in ps8640_resume()
410 	struct ps8640 *ps_bridge = dev_get_drvdata(dev);  in ps8640_suspend()  local
413 	gpiod_set_value(ps_bridge->gpio_reset, 1);  in ps8640_suspend()
414 	gpiod_set_value(ps_bridge->gpio_powerdown, 1);  in ps8640_suspend()
415 	ret = regulator_bulk_disable(ARRAY_SIZE(ps_bridge->supplies),  in ps8640_suspend()
416 				     ps_bridge->supplies);  in ps8640_suspend()
432 	struct ps8640 *ps_bridge = bridge_to_ps8640(bridge);  in ps8640_atomic_pre_enable()  local
433 	struct regmap *map = ps_bridge->regmap[PAGE2_TOP_CNTL];  in ps8640_atomic_pre_enable()
434 	struct device *dev = &ps_bridge->page[PAGE0_DP_CNTL]->dev;  in ps8640_atomic_pre_enable()
438 	ret = _ps8640_wait_hpd_asserted(ps_bridge, 200 * 1000);  in ps8640_atomic_pre_enable()
459 	ps8640_bridge_vdo_control(ps_bridge, ENABLE);  in ps8640_atomic_pre_enable()
461 	ps_bridge->pre_enabled = true;  in ps8640_atomic_pre_enable()
467 	struct ps8640 *ps_bridge = bridge_to_ps8640(bridge);  in ps8640_atomic_post_disable()  local
469 	ps_bridge->pre_enabled = false;  in ps8640_atomic_post_disable()
471 	ps8640_bridge_vdo_control(ps_bridge, DISABLE);  in ps8640_atomic_post_disable()
472 	pm_runtime_put_sync_suspend(&ps_bridge->page[PAGE0_DP_CNTL]->dev);  in ps8640_atomic_post_disable()
478 	struct ps8640 *ps_bridge = bridge_to_ps8640(bridge);  in ps8640_bridge_attach()  local
479 	struct device *dev = &ps_bridge->page[0]->dev;  in ps8640_bridge_attach()
485 	ps_bridge->aux.drm_dev = bridge->dev;  in ps8640_bridge_attach()
486 	ret = drm_dp_aux_register(&ps_bridge->aux);  in ps8640_bridge_attach()
492 	ps_bridge->link = device_link_add(bridge->dev->dev, dev, DL_FLAG_STATELESS);  in ps8640_bridge_attach()
493 	if (!ps_bridge->link) {  in ps8640_bridge_attach()
500 	ret = drm_bridge_attach(bridge->encoder, ps_bridge->panel_bridge,  in ps8640_bridge_attach()
501 				&ps_bridge->bridge, flags);  in ps8640_bridge_attach()
508 	device_link_del(ps_bridge->link);  in ps8640_bridge_attach()
510 	drm_dp_aux_unregister(&ps_bridge->aux);  in ps8640_bridge_attach()
517 	struct ps8640 *ps_bridge = bridge_to_ps8640(bridge);  in ps8640_bridge_detach()  local
519 	drm_dp_aux_unregister(&ps_bridge->aux);  in ps8640_bridge_detach()
520 	if (ps_bridge->link)  in ps8640_bridge_detach()
521 		device_link_del(ps_bridge->link);  in ps8640_bridge_detach()
540 static int ps8640_bridge_get_dsi_resources(struct device *dev, struct ps8640 *ps_bridge)  in ps8640_bridge_get_dsi_resources()  argument
571 	ps_bridge->dsi = dsi;  in ps8640_bridge_get_dsi_resources()
584 	struct ps8640 *ps_bridge = aux_to_ps8640(aux);  in ps8640_bridge_link_panel()  local
599 	ps_bridge->panel_bridge = devm_drm_of_get_bridge(dev, np, 1, 0);  in ps8640_bridge_link_panel()
600 	if (IS_ERR(ps_bridge->panel_bridge))  in ps8640_bridge_link_panel()
601 		return PTR_ERR(ps_bridge->panel_bridge);  in ps8640_bridge_link_panel()
603 	ret = devm_drm_bridge_add(dev, &ps_bridge->bridge);  in ps8640_bridge_link_panel()
607 	return devm_mipi_dsi_attach(dev, ps_bridge->dsi);  in ps8640_bridge_link_panel()
613 	struct ps8640 *ps_bridge;  in ps8640_probe()  local
617 	ps_bridge = devm_kzalloc(dev, sizeof(*ps_bridge), GFP_KERNEL);  in ps8640_probe()
618 	if (!ps_bridge)  in ps8640_probe()
621 	ps_bridge->supplies[0].supply = "vdd12";  in ps8640_probe()
622 	ps_bridge->supplies[1].supply = "vdd33";  in ps8640_probe()
623 	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ps_bridge->supplies),  in ps8640_probe()
624 				      ps_bridge->supplies);  in ps8640_probe()
628 	ps_bridge->gpio_powerdown = devm_gpiod_get(&client->dev, "powerdown",  in ps8640_probe()
630 	if (IS_ERR(ps_bridge->gpio_powerdown))  in ps8640_probe()
631 		return PTR_ERR(ps_bridge->gpio_powerdown);  in ps8640_probe()
636 	ps_bridge->gpio_reset = devm_gpiod_get(&client->dev, "reset",  in ps8640_probe()
638 	if (IS_ERR(ps_bridge->gpio_reset))  in ps8640_probe()
639 		return PTR_ERR(ps_bridge->gpio_reset);  in ps8640_probe()
641 	ps_bridge->bridge.funcs = &ps8640_bridge_funcs;  in ps8640_probe()
642 	ps_bridge->bridge.of_node = dev->of_node;  in ps8640_probe()
643 	ps_bridge->bridge.type = DRM_MODE_CONNECTOR_eDP;  in ps8640_probe()
649 	ret = ps8640_bridge_get_dsi_resources(&client->dev, ps_bridge);  in ps8640_probe()
653 	ps_bridge->page[PAGE0_DP_CNTL] = client;  in ps8640_probe()
655 	ps_bridge->regmap[PAGE0_DP_CNTL] = devm_regmap_init_i2c(client, ps8640_regmap_config);  in ps8640_probe()
656 	if (IS_ERR(ps_bridge->regmap[PAGE0_DP_CNTL]))  in ps8640_probe()
657 		return PTR_ERR(ps_bridge->regmap[PAGE0_DP_CNTL]);  in ps8640_probe()
659 	for (i = 1; i < ARRAY_SIZE(ps_bridge->page); i++) {  in ps8640_probe()
660 		ps_bridge->page[i] = devm_i2c_new_dummy_device(&client->dev,  in ps8640_probe()
663 		if (IS_ERR(ps_bridge->page[i]))  in ps8640_probe()
664 			return PTR_ERR(ps_bridge->page[i]);  in ps8640_probe()
666 		ps_bridge->regmap[i] = devm_regmap_init_i2c(ps_bridge->page[i],  in ps8640_probe()
668 		if (IS_ERR(ps_bridge->regmap[i]))  in ps8640_probe()
669 			return PTR_ERR(ps_bridge->regmap[i]);  in ps8640_probe()
672 	i2c_set_clientdata(client, ps_bridge);  in ps8640_probe()
674 	ps_bridge->aux.name = "parade-ps8640-aux";  in ps8640_probe()
675 	ps_bridge->aux.dev = dev;  in ps8640_probe()
676 	ps_bridge->aux.transfer = ps8640_aux_transfer;  in ps8640_probe()
677 	ps_bridge->aux.wait_hpd_asserted = ps8640_wait_hpd_asserted;  in ps8640_probe()
678 	drm_dp_aux_init(&ps_bridge->aux);  in ps8640_probe()
696 	ret = devm_of_dp_aux_populate_bus(&ps_bridge->aux, ps8640_bridge_link_panel);  in ps8640_probe()
704 		return ps8640_bridge_link_panel(&ps_bridge->aux);  in ps8640_probe()