51 static int ptn3460_read_bytes(struct ptn3460_bridge *ptn_bridge, char addr,  in ptn3460_read_bytes()  argument
56 	ret = i2c_master_send(ptn_bridge->client, &addr, 1);  in ptn3460_read_bytes()
62 	ret = i2c_master_recv(ptn_bridge->client, buf, len);  in ptn3460_read_bytes()
71 static int ptn3460_write_byte(struct ptn3460_bridge *ptn_bridge, char addr,  in ptn3460_write_byte()  argument
80 	ret = i2c_master_send(ptn_bridge->client, buf, ARRAY_SIZE(buf));  in ptn3460_write_byte()
89 static int ptn3460_select_edid(struct ptn3460_bridge *ptn_bridge)  in ptn3460_select_edid()  argument
95 	ret = ptn3460_write_byte(ptn_bridge, PTN3460_EDID_SRAM_LOAD_ADDR,  in ptn3460_select_edid()
96 			ptn_bridge->edid_emulation);  in ptn3460_select_edid()
104 		ptn_bridge->edid_emulation << PTN3460_EDID_EMULATION_SELECTION;  in ptn3460_select_edid()
106 	ret = ptn3460_write_byte(ptn_bridge, PTN3460_EDID_EMULATION_ADDR, val);  in ptn3460_select_edid()
117 	struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);  in ptn3460_pre_enable()  local
120 	if (ptn_bridge->enabled)  in ptn3460_pre_enable()
123 	gpiod_set_value(ptn_bridge->gpio_pd_n, 1);  in ptn3460_pre_enable()
125 	gpiod_set_value(ptn_bridge->gpio_rst_n, 0);  in ptn3460_pre_enable()
127 	gpiod_set_value(ptn_bridge->gpio_rst_n, 1);  in ptn3460_pre_enable()
129 	if (drm_panel_prepare(ptn_bridge->panel)) {  in ptn3460_pre_enable()
141 	ret = ptn3460_select_edid(ptn_bridge);  in ptn3460_pre_enable()
145 	ptn_bridge->enabled = true;  in ptn3460_pre_enable()
150 	struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);  in ptn3460_enable()  local
152 	if (drm_panel_enable(ptn_bridge->panel)) {  in ptn3460_enable()
160 	struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);  in ptn3460_disable()  local
162 	if (!ptn_bridge->enabled)  in ptn3460_disable()
165 	ptn_bridge->enabled = false;  in ptn3460_disable()
167 	if (drm_panel_disable(ptn_bridge->panel)) {  in ptn3460_disable()
172 	gpiod_set_value(ptn_bridge->gpio_rst_n, 1);  in ptn3460_disable()
173 	gpiod_set_value(ptn_bridge->gpio_pd_n, 0);  in ptn3460_disable()
178 	struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);  in ptn3460_post_disable()  local
180 	if (drm_panel_unprepare(ptn_bridge->panel)) {  in ptn3460_post_disable()
188 	struct ptn3460_bridge *ptn_bridge;  in ptn3460_get_modes()  local
193 	ptn_bridge = connector_to_ptn3460(connector);  in ptn3460_get_modes()
195 	if (ptn_bridge->edid)  in ptn3460_get_modes()
196 		return drm_add_edid_modes(connector, ptn_bridge->edid);  in ptn3460_get_modes()
198 	power_off = !ptn_bridge->enabled;  in ptn3460_get_modes()
199 	ptn3460_pre_enable(&ptn_bridge->bridge);  in ptn3460_get_modes()
207 	ret = ptn3460_read_bytes(ptn_bridge, PTN3460_EDID_ADDR, edid,  in ptn3460_get_modes()
214 	ptn_bridge->edid = (struct edid *)edid;  in ptn3460_get_modes()
215 	drm_connector_update_edid_property(connector, ptn_bridge->edid);  in ptn3460_get_modes()
217 	num_modes = drm_add_edid_modes(connector, ptn_bridge->edid);  in ptn3460_get_modes()
221 		ptn3460_disable(&ptn_bridge->bridge);  in ptn3460_get_modes()
240 	struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);  in ptn3460_bridge_attach()  local
248 	ptn_bridge->connector.polled = DRM_CONNECTOR_POLL_HPD;  in ptn3460_bridge_attach()
249 	ret = drm_connector_init(bridge->dev, &ptn_bridge->connector,  in ptn3460_bridge_attach()
255 	drm_connector_helper_add(&ptn_bridge->connector,  in ptn3460_bridge_attach()
257 	drm_connector_register(&ptn_bridge->connector);  in ptn3460_bridge_attach()
258 	drm_connector_attach_encoder(&ptn_bridge->connector,  in ptn3460_bridge_attach()
261 	if (ptn_bridge->panel)  in ptn3460_bridge_attach()
262 		drm_panel_attach(ptn_bridge->panel, &ptn_bridge->connector);  in ptn3460_bridge_attach()
264 	drm_helper_hpd_irq_event(ptn_bridge->connector.dev);  in ptn3460_bridge_attach()
281 	struct ptn3460_bridge *ptn_bridge;  in ptn3460_probe()  local
284 	ptn_bridge = devm_kzalloc(dev, sizeof(*ptn_bridge), GFP_KERNEL);  in ptn3460_probe()
285 	if (!ptn_bridge) {  in ptn3460_probe()
289 	ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0, &ptn_bridge->panel, NULL);  in ptn3460_probe()
293 	ptn_bridge->client = client;  in ptn3460_probe()
295 	ptn_bridge->gpio_pd_n = devm_gpiod_get(&client->dev, "powerdown",  in ptn3460_probe()
297 	if (IS_ERR(ptn_bridge->gpio_pd_n)) {  in ptn3460_probe()
298 		ret = PTR_ERR(ptn_bridge->gpio_pd_n);  in ptn3460_probe()
307 	ptn_bridge->gpio_rst_n = devm_gpiod_get(&client->dev, "reset",  in ptn3460_probe()
309 	if (IS_ERR(ptn_bridge->gpio_rst_n)) {  in ptn3460_probe()
310 		ret = PTR_ERR(ptn_bridge->gpio_rst_n);  in ptn3460_probe()
316 			&ptn_bridge->edid_emulation);  in ptn3460_probe()
322 	ptn_bridge->bridge.funcs = &ptn3460_bridge_funcs;  in ptn3460_probe()
323 	ptn_bridge->bridge.of_node = dev->of_node;  in ptn3460_probe()
324 	drm_bridge_add(&ptn_bridge->bridge);  in ptn3460_probe()
326 	i2c_set_clientdata(client, ptn_bridge);  in ptn3460_probe()
333 	struct ptn3460_bridge *ptn_bridge = i2c_get_clientdata(client);  in ptn3460_remove()  local
335 	drm_bridge_remove(&ptn_bridge->bridge);  in ptn3460_remove()