1 // SPDX-License-Identifier: GPL-2.0+
3  * I2C multi-instantiate driver, pseudo driver to instantiate multiple
4  * i2c-clients from a single fwnode.
61 	struct i2c_multi_inst_data *multi;  in i2c_multi_inst_probe()  local
65 	struct device *dev = &pdev->dev;  in i2c_multi_inst_probe()
70 	match = acpi_match_device(dev->driver->acpi_match_table, dev);  in i2c_multi_inst_probe()
73 		return -ENODEV;  in i2c_multi_inst_probe()
75 	inst_data = (const struct i2c_inst_data *)match->driver_data;  in i2c_multi_inst_probe()
84 	multi = devm_kmalloc(dev, struct_size(multi, clients, ret), GFP_KERNEL);  in i2c_multi_inst_probe()
85 	if (!multi)  in i2c_multi_inst_probe()
86 		return -ENOMEM;  in i2c_multi_inst_probe()
88 	multi->num_clients = ret;  in i2c_multi_inst_probe()
90 	for (i = 0; i < multi->num_clients && inst_data[i].type; i++) {  in i2c_multi_inst_probe()
93 		snprintf(name, sizeof(name), "%s-%s.%d", dev_name(dev),  in i2c_multi_inst_probe()
119 		multi->clients[i] = i2c_acpi_new_device(dev, i, &board_info);  in i2c_multi_inst_probe()
120 		if (IS_ERR(multi->clients[i])) {  in i2c_multi_inst_probe()
121 			ret = PTR_ERR(multi->clients[i]);  in i2c_multi_inst_probe()
122 			if (ret != -EPROBE_DEFER)  in i2c_multi_inst_probe()
123 				dev_err(dev, "Error creating i2c-client, idx %d\n", i);  in i2c_multi_inst_probe()
127 	if (i < multi->num_clients) {  in i2c_multi_inst_probe()
129 		ret = -ENODEV;  in i2c_multi_inst_probe()
133 	platform_set_drvdata(pdev, multi);  in i2c_multi_inst_probe()
137 	while (--i >= 0)  in i2c_multi_inst_probe()
138 		i2c_unregister_device(multi->clients[i]);  in i2c_multi_inst_probe()
145 	struct i2c_multi_inst_data *multi = platform_get_drvdata(pdev);  in i2c_multi_inst_remove()  local
148 	for (i = 0; i < multi->num_clients; i++)  in i2c_multi_inst_remove()
149 		i2c_unregister_device(multi->clients[i]);  in i2c_multi_inst_remove()
178  * Note new device-ids must also be added to i2c_multi_instantiate_ids in
191 		.name = "I2C multi instantiate pseudo device driver",
199 MODULE_DESCRIPTION("I2C multi instantiate pseudo device driver");