67 	int ret;  in ptn3460_read_bytes()  local
69 	ret = i2c_master_send(ptn_bridge->client, &addr, 1);  in ptn3460_read_bytes()
70 	if (ret <= 0) {  in ptn3460_read_bytes()
71 		DRM_ERROR("Failed to send i2c command, ret=%d\n", ret);  in ptn3460_read_bytes()
72 		return ret;  in ptn3460_read_bytes()
75 	ret = i2c_master_recv(ptn_bridge->client, buf, len);  in ptn3460_read_bytes()
76 	if (ret <= 0) {  in ptn3460_read_bytes()
77 		DRM_ERROR("Failed to recv i2c data, ret=%d\n", ret);  in ptn3460_read_bytes()
78 		return ret;  in ptn3460_read_bytes()
87 	int ret;  in ptn3460_write_byte()  local
93 	ret = i2c_master_send(ptn_bridge->client, buf, ARRAY_SIZE(buf));  in ptn3460_write_byte()
94 	if (ret <= 0) {  in ptn3460_write_byte()
95 		DRM_ERROR("Failed to send i2c command, ret=%d\n", ret);  in ptn3460_write_byte()
96 		return ret;  in ptn3460_write_byte()
104 	int ret;  in ptn3460_select_edid()  local
108 	ret = ptn3460_write_byte(ptn_bridge, PTN3460_EDID_SRAM_LOAD_ADDR,  in ptn3460_select_edid()
110 	if (ret) {  in ptn3460_select_edid()
111 		DRM_ERROR("Failed to transfer EDID to sram, ret=%d\n", ret);  in ptn3460_select_edid()
112 		return ret;  in ptn3460_select_edid()
119 	ret = ptn3460_write_byte(ptn_bridge, PTN3460_EDID_EMULATION_ADDR, val);  in ptn3460_select_edid()
120 	if (ret) {  in ptn3460_select_edid()
121 		DRM_ERROR("Failed to write EDID value, ret=%d\n", ret);  in ptn3460_select_edid()
122 		return ret;  in ptn3460_select_edid()
131 	int ret;  in ptn3460_pre_enable()  local
154 	ret = ptn3460_select_edid(ptn_bridge);  in ptn3460_pre_enable()
155 	if (ret)  in ptn3460_pre_enable()
156 		DRM_ERROR("Select EDID failed ret=%d\n", ret);  in ptn3460_pre_enable()
203 	int ret, num_modes = 0;  in ptn3460_get_modes()  local
220 	ret = ptn3460_read_bytes(ptn_bridge, PTN3460_EDID_ADDR, edid,  in ptn3460_get_modes()
222 	if (ret) {  in ptn3460_get_modes()
272 	int ret;  in ptn3460_bridge_attach()  local
280 	ret = drm_connector_init(bridge->dev, &ptn_bridge->connector,  in ptn3460_bridge_attach()
282 	if (ret) {  in ptn3460_bridge_attach()
284 		return ret;  in ptn3460_bridge_attach()
297 	return ret;  in ptn3460_bridge_attach()
314 	int ret;  in ptn3460_probe()  local
336 		ret = PTR_ERR(ptn_bridge->gpio_pd_n);  in ptn3460_probe()
337 		dev_err(dev, "cannot get gpio_pd_n %d\n", ret);  in ptn3460_probe()
338 		return ret;  in ptn3460_probe()
341 	ret = gpiod_direction_output(ptn_bridge->gpio_pd_n, 1);  in ptn3460_probe()
342 	if (ret) {  in ptn3460_probe()
344 		return ret;  in ptn3460_probe()
349 		ret = PTR_ERR(ptn_bridge->gpio_rst_n);  in ptn3460_probe()
350 		DRM_ERROR("cannot get gpio_rst_n %d\n", ret);  in ptn3460_probe()
351 		return ret;  in ptn3460_probe()
357 	ret = gpiod_direction_output(ptn_bridge->gpio_rst_n, 0);  in ptn3460_probe()
358 	if (ret) {  in ptn3460_probe()
360 		return ret;  in ptn3460_probe()
363 	ret = of_property_read_u32(dev->of_node, "edid-emulation",  in ptn3460_probe()
365 	if (ret) {  in ptn3460_probe()
367 		return ret;  in ptn3460_probe()
372 	ret = drm_bridge_add(&ptn_bridge->bridge);  in ptn3460_probe()
373 	if (ret) {  in ptn3460_probe()
375 		return ret;  in ptn3460_probe()