63 static int ptn3460_read_bytes(struct ptn3460_bridge *ptn_bridge, char addr,  in ptn3460_read_bytes()  argument
68 	ret = i2c_master_send(ptn_bridge->client, &addr, 1);  in ptn3460_read_bytes()
74 	ret = i2c_master_recv(ptn_bridge->client, buf, len);  in ptn3460_read_bytes()
83 static int ptn3460_write_byte(struct ptn3460_bridge *ptn_bridge, char addr,  in ptn3460_write_byte()  argument
92 	ret = i2c_master_send(ptn_bridge->client, buf, ARRAY_SIZE(buf));  in ptn3460_write_byte()
101 static int ptn3460_select_edid(struct ptn3460_bridge *ptn_bridge)  in ptn3460_select_edid()  argument
107 	ret = ptn3460_write_byte(ptn_bridge, PTN3460_EDID_SRAM_LOAD_ADDR,  in ptn3460_select_edid()
108 			ptn_bridge->edid_emulation);  in ptn3460_select_edid()
116 		ptn_bridge->edid_emulation << PTN3460_EDID_EMULATION_SELECTION;  in ptn3460_select_edid()
118 	ret = ptn3460_write_byte(ptn_bridge, PTN3460_EDID_EMULATION_ADDR, val);  in ptn3460_select_edid()
129 	struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);  in ptn3460_pre_enable()  local
132 	if (ptn_bridge->enabled)  in ptn3460_pre_enable()
135 	gpiod_set_value(ptn_bridge->gpio_pd_n, 1);  in ptn3460_pre_enable()
137 	gpiod_set_value(ptn_bridge->gpio_rst_n, 0);  in ptn3460_pre_enable()
139 	gpiod_set_value(ptn_bridge->gpio_rst_n, 1);  in ptn3460_pre_enable()
141 	if (drm_panel_prepare(ptn_bridge->panel)) {  in ptn3460_pre_enable()
153 	ret = ptn3460_select_edid(ptn_bridge);  in ptn3460_pre_enable()
157 	ptn_bridge->enabled = true;  in ptn3460_pre_enable()
162 	struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);  in ptn3460_enable()  local
164 	if (drm_panel_enable(ptn_bridge->panel)) {  in ptn3460_enable()
172 	struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);  in ptn3460_disable()  local
174 	if (!ptn_bridge->enabled)  in ptn3460_disable()
177 	ptn_bridge->enabled = false;  in ptn3460_disable()
179 	if (drm_panel_disable(ptn_bridge->panel)) {  in ptn3460_disable()
184 	gpiod_set_value(ptn_bridge->gpio_rst_n, 1);  in ptn3460_disable()
185 	gpiod_set_value(ptn_bridge->gpio_pd_n, 0);  in ptn3460_disable()
190 	struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);  in ptn3460_post_disable()  local
192 	if (drm_panel_unprepare(ptn_bridge->panel)) {  in ptn3460_post_disable()
200 	struct ptn3460_bridge *ptn_bridge;  in ptn3460_get_modes()  local
205 	ptn_bridge = connector_to_ptn3460(connector);  in ptn3460_get_modes()
207 	if (ptn_bridge->edid)  in ptn3460_get_modes()
208 		return drm_add_edid_modes(connector, ptn_bridge->edid);  in ptn3460_get_modes()
210 	power_off = !ptn_bridge->enabled;  in ptn3460_get_modes()
211 	ptn3460_pre_enable(&ptn_bridge->bridge);  in ptn3460_get_modes()
219 	ret = ptn3460_read_bytes(ptn_bridge, PTN3460_EDID_ADDR, edid,  in ptn3460_get_modes()
226 	ptn_bridge->edid = (struct edid *)edid;  in ptn3460_get_modes()
227 	drm_mode_connector_update_edid_property(connector, ptn_bridge->edid);  in ptn3460_get_modes()
229 	num_modes = drm_add_edid_modes(connector, ptn_bridge->edid);  in ptn3460_get_modes()
233 		ptn3460_disable(&ptn_bridge->bridge);  in ptn3460_get_modes()
240 	struct ptn3460_bridge *ptn_bridge = connector_to_ptn3460(connector);  in ptn3460_best_encoder()  local
242 	return ptn_bridge->bridge.encoder;  in ptn3460_best_encoder()
273 	struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);  in ptn3460_bridge_attach()  local
281 	ptn_bridge->connector.polled = DRM_CONNECTOR_POLL_HPD;  in ptn3460_bridge_attach()
282 	ret = drm_connector_init(bridge->dev, &ptn_bridge->connector,  in ptn3460_bridge_attach()
288 	drm_connector_helper_add(&ptn_bridge->connector,  in ptn3460_bridge_attach()
290 	drm_connector_register(&ptn_bridge->connector);  in ptn3460_bridge_attach()
291 	drm_mode_connector_attach_encoder(&ptn_bridge->connector,  in ptn3460_bridge_attach()
294 	if (ptn_bridge->panel)  in ptn3460_bridge_attach()
295 		drm_panel_attach(ptn_bridge->panel, &ptn_bridge->connector);  in ptn3460_bridge_attach()
297 	drm_helper_hpd_irq_event(ptn_bridge->connector.dev);  in ptn3460_bridge_attach()
314 	struct ptn3460_bridge *ptn_bridge;  in ptn3460_probe()  local
318 	ptn_bridge = devm_kzalloc(dev, sizeof(*ptn_bridge), GFP_KERNEL);  in ptn3460_probe()
319 	if (!ptn_bridge) {  in ptn3460_probe()
327 			ptn_bridge->panel = of_drm_find_panel(panel_node);  in ptn3460_probe()
329 			if (!ptn_bridge->panel)  in ptn3460_probe()
334 	ptn_bridge->client = client;  in ptn3460_probe()
336 	ptn_bridge->gpio_pd_n = devm_gpiod_get(&client->dev, "powerdown",  in ptn3460_probe()
338 	if (IS_ERR(ptn_bridge->gpio_pd_n)) {  in ptn3460_probe()
339 		ret = PTR_ERR(ptn_bridge->gpio_pd_n);  in ptn3460_probe()
348 	ptn_bridge->gpio_rst_n = devm_gpiod_get(&client->dev, "reset",  in ptn3460_probe()
350 	if (IS_ERR(ptn_bridge->gpio_rst_n)) {  in ptn3460_probe()
351 		ret = PTR_ERR(ptn_bridge->gpio_rst_n);  in ptn3460_probe()
357 			&ptn_bridge->edid_emulation);  in ptn3460_probe()
363 	ptn_bridge->bridge.funcs = &ptn3460_bridge_funcs;  in ptn3460_probe()
364 	ptn_bridge->bridge.of_node = dev->of_node;  in ptn3460_probe()
365 	ret = drm_bridge_add(&ptn_bridge->bridge);  in ptn3460_probe()
371 	i2c_set_clientdata(client, ptn_bridge);  in ptn3460_probe()
378 	struct ptn3460_bridge *ptn_bridge = i2c_get_clientdata(client);  in ptn3460_remove()  local
380 	drm_bridge_remove(&ptn_bridge->bridge);  in ptn3460_remove()