2 * OF helpers for the I2C API
4 * Copyright (c) 2008 Jochen Friedrich <jochen@scram.de>
6 * Based on a previous patch from Jon Smirl <jonsmirl@gmail.com>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
14 #include <linux/i2c.h>
16 #include <linux/of_i2c.h>
17 #include <linux/module.h>
19 void of_register_i2c_devices(struct i2c_adapter
*adap
,
20 struct device_node
*adap_node
)
23 struct device_node
*node
;
25 for_each_child_of_node(adap_node
, node
) {
26 struct i2c_board_info info
= {};
30 if (of_modalias_node(node
, info
.type
, sizeof(info
.type
)) < 0)
33 addr
= of_get_property(node
, "reg", &len
);
34 if (!addr
|| len
< sizeof(int) || *addr
> (1 << 10) - 1) {
36 "of-i2c: invalid i2c device entry\n");
40 info
.irq
= irq_of_parse_and_map(node
, 0);
44 request_module("%s", info
.type
);
46 result
= i2c_new_device(adap
, &info
);
49 "of-i2c: Failed to load driver for %s\n",
51 irq_dispose_mapping(info
.irq
);
56 EXPORT_SYMBOL(of_register_i2c_devices
);
58 MODULE_LICENSE("GPL");
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