64 static int ptn3460_read_bytes(struct ptn3460_bridge *ptn_bridge, char addr,  in ptn3460_read_bytes()  argument
69 	ret = i2c_master_send(ptn_bridge->client, &addr, 1);  in ptn3460_read_bytes()
75 	ret = i2c_master_recv(ptn_bridge->client, buf, len);  in ptn3460_read_bytes()
84 static int ptn3460_write_byte(struct ptn3460_bridge *ptn_bridge, char addr,  in ptn3460_write_byte()  argument
93 	ret = i2c_master_send(ptn_bridge->client, buf, ARRAY_SIZE(buf));  in ptn3460_write_byte()
102 static int ptn3460_select_edid(struct ptn3460_bridge *ptn_bridge)  in ptn3460_select_edid()  argument
108 	ret = ptn3460_write_byte(ptn_bridge, PTN3460_EDID_SRAM_LOAD_ADDR,  in ptn3460_select_edid()
109 			ptn_bridge->edid_emulation);  in ptn3460_select_edid()
117 		ptn_bridge->edid_emulation << PTN3460_EDID_EMULATION_SELECTION;  in ptn3460_select_edid()
119 	ret = ptn3460_write_byte(ptn_bridge, PTN3460_EDID_EMULATION_ADDR, val);  in ptn3460_select_edid()
130 	struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);  in ptn3460_pre_enable()  local
133 	if (ptn_bridge->enabled)  in ptn3460_pre_enable()
136 	gpiod_set_value(ptn_bridge->gpio_pd_n, 1);  in ptn3460_pre_enable()
138 	gpiod_set_value(ptn_bridge->gpio_rst_n, 0);  in ptn3460_pre_enable()
140 	gpiod_set_value(ptn_bridge->gpio_rst_n, 1);  in ptn3460_pre_enable()
142 	if (drm_panel_prepare(ptn_bridge->panel)) {  in ptn3460_pre_enable()
154 	ret = ptn3460_select_edid(ptn_bridge);  in ptn3460_pre_enable()
158 	ptn_bridge->enabled = true;  in ptn3460_pre_enable()
163 	struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);  in ptn3460_enable()  local
165 	if (drm_panel_enable(ptn_bridge->panel)) {  in ptn3460_enable()
173 	struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);  in ptn3460_disable()  local
175 	if (!ptn_bridge->enabled)  in ptn3460_disable()
178 	ptn_bridge->enabled = false;  in ptn3460_disable()
180 	if (drm_panel_disable(ptn_bridge->panel)) {  in ptn3460_disable()
185 	gpiod_set_value(ptn_bridge->gpio_rst_n, 1);  in ptn3460_disable()
186 	gpiod_set_value(ptn_bridge->gpio_pd_n, 0);  in ptn3460_disable()
191 	struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);  in ptn3460_post_disable()  local
193 	if (drm_panel_unprepare(ptn_bridge->panel)) {  in ptn3460_post_disable()
201 	struct ptn3460_bridge *ptn_bridge;  in ptn3460_get_modes()  local
206 	ptn_bridge = connector_to_ptn3460(connector);  in ptn3460_get_modes()
208 	if (ptn_bridge->edid)  in ptn3460_get_modes()
209 		return drm_add_edid_modes(connector, ptn_bridge->edid);  in ptn3460_get_modes()
211 	power_off = !ptn_bridge->enabled;  in ptn3460_get_modes()
212 	ptn3460_pre_enable(&ptn_bridge->bridge);  in ptn3460_get_modes()
220 	ret = ptn3460_read_bytes(ptn_bridge, PTN3460_EDID_ADDR, edid,  in ptn3460_get_modes()
227 	ptn_bridge->edid = (struct edid *)edid;  in ptn3460_get_modes()
228 	drm_mode_connector_update_edid_property(connector, ptn_bridge->edid);  in ptn3460_get_modes()
230 	num_modes = drm_add_edid_modes(connector, ptn_bridge->edid);  in ptn3460_get_modes()
234 		ptn3460_disable(&ptn_bridge->bridge);  in ptn3460_get_modes()
241 	struct ptn3460_bridge *ptn_bridge = connector_to_ptn3460(connector);  in ptn3460_best_encoder()  local
243 	return ptn_bridge->bridge.encoder;  in ptn3460_best_encoder()
271 	struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);  in ptn3460_bridge_attach()  local
279 	ptn_bridge->connector.polled = DRM_CONNECTOR_POLL_HPD;  in ptn3460_bridge_attach()
280 	ret = drm_connector_init(bridge->dev, &ptn_bridge->connector,  in ptn3460_bridge_attach()
286 	drm_connector_helper_add(&ptn_bridge->connector,  in ptn3460_bridge_attach()
288 	drm_connector_register(&ptn_bridge->connector);  in ptn3460_bridge_attach()
289 	drm_mode_connector_attach_encoder(&ptn_bridge->connector,  in ptn3460_bridge_attach()
292 	if (ptn_bridge->panel)  in ptn3460_bridge_attach()
293 		drm_panel_attach(ptn_bridge->panel, &ptn_bridge->connector);  in ptn3460_bridge_attach()
295 	drm_helper_hpd_irq_event(ptn_bridge->connector.dev);  in ptn3460_bridge_attach()
312 	struct ptn3460_bridge *ptn_bridge;  in ptn3460_probe()  local
316 	ptn_bridge = devm_kzalloc(dev, sizeof(*ptn_bridge), GFP_KERNEL);  in ptn3460_probe()
317 	if (!ptn_bridge) {  in ptn3460_probe()
325 			ptn_bridge->panel = of_drm_find_panel(panel_node);  in ptn3460_probe()
327 			if (!ptn_bridge->panel)  in ptn3460_probe()
332 	ptn_bridge->client = client;  in ptn3460_probe()
334 	ptn_bridge->gpio_pd_n = devm_gpiod_get(&client->dev, "powerdown");  in ptn3460_probe()
335 	if (IS_ERR(ptn_bridge->gpio_pd_n)) {  in ptn3460_probe()
336 		ret = PTR_ERR(ptn_bridge->gpio_pd_n);  in ptn3460_probe()
341 	ret = gpiod_direction_output(ptn_bridge->gpio_pd_n, 1);  in ptn3460_probe()
347 	ptn_bridge->gpio_rst_n = devm_gpiod_get(&client->dev, "reset");  in ptn3460_probe()
348 	if (IS_ERR(ptn_bridge->gpio_rst_n)) {  in ptn3460_probe()
349 		ret = PTR_ERR(ptn_bridge->gpio_rst_n);  in ptn3460_probe()
357 	ret = gpiod_direction_output(ptn_bridge->gpio_rst_n, 0);  in ptn3460_probe()
364 			&ptn_bridge->edid_emulation);  in ptn3460_probe()
370 	ptn_bridge->bridge.funcs = &ptn3460_bridge_funcs;  in ptn3460_probe()
371 	ptn_bridge->bridge.of_node = dev->of_node;  in ptn3460_probe()
372 	ret = drm_bridge_add(&ptn_bridge->bridge);  in ptn3460_probe()
378 	i2c_set_clientdata(client, ptn_bridge);  in ptn3460_probe()
385 	struct ptn3460_bridge *ptn_bridge = i2c_get_clientdata(client);  in ptn3460_remove()  local
387 	drm_bridge_remove(&ptn_bridge->bridge);  in ptn3460_remove()