1 // SPDX-License-Identifier: GPL-2.0-or-later
82 	if (!i2c_check_functionality(client->adapter,  in ucd9200_probe()
85 		return -ENODEV;  in ucd9200_probe()
90 		dev_err(&client->dev, "Failed to read device ID\n");  in ucd9200_probe()
94 	dev_info(&client->dev, "Device ID %s\n", block_buffer);  in ucd9200_probe()
96 	for (mid = ucd9200_id; mid->name[0]; mid++) {  in ucd9200_probe()
97 		if (!strncasecmp(mid->name, block_buffer, strlen(mid->name)))  in ucd9200_probe()
100 	if (!mid->name[0]) {  in ucd9200_probe()
101 		dev_err(&client->dev, "Unsupported device\n");  in ucd9200_probe()
102 		return -ENODEV;  in ucd9200_probe()
105 	if (client->dev.of_node)  in ucd9200_probe()
106 		chip = (uintptr_t)of_device_get_match_data(&client->dev);  in ucd9200_probe()
108 		chip = mid->driver_data;  in ucd9200_probe()
110 	if (chip != ucd9200 && strcmp(client->name, mid->name) != 0)  in ucd9200_probe()
111 		dev_notice(&client->dev,  in ucd9200_probe()
113 			   client->name, mid->name);  in ucd9200_probe()
115 	info = devm_kzalloc(&client->dev, sizeof(struct pmbus_driver_info),  in ucd9200_probe()
118 		return -ENOMEM;  in ucd9200_probe()
123 		dev_err(&client->dev, "Failed to read phase information\n");  in ucd9200_probe()
133 	info->pages = 0;  in ucd9200_probe()
137 		info->pages++;  in ucd9200_probe()
139 	if (!info->pages) {  in ucd9200_probe()
140 		dev_err(&client->dev, "No rails configured\n");  in ucd9200_probe()
141 		return -ENODEV;  in ucd9200_probe()
143 	dev_info(&client->dev, "%d rails configured\n", info->pages);  in ucd9200_probe()
146 	 * Set PHASE registers on all pages to 0xff to ensure that phase  in ucd9200_probe()
153 	for (i = 0; i < info->pages; i++) {  in ucd9200_probe()
155 		 * Setting PAGE & PHASE fails once in a while for no obvious  in ucd9200_probe()
169 			dev_err(&client->dev,  in ucd9200_probe()
170 				"Failed to initialize PHASE registers\n");  in ucd9200_probe()
174 	if (info->pages > 1)  in ucd9200_probe()
177 	info->func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT |  in ucd9200_probe()
184 	for (i = 1; i < info->pages; i++)  in ucd9200_probe()
185 		info->func[i] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |  in ucd9200_probe()
190 	/* ucd9240 supports a single fan */  in ucd9200_probe()
191 	if (mid->driver_data == ucd9240)  in ucd9200_probe()
192 		info->func[0] |= PMBUS_HAVE_FAN12 | PMBUS_HAVE_STATUS_FAN12;  in ucd9200_probe()