1 /*
2 * Copyright (c) 2013 Corey Tabaka
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining
5 * a copy of this software and associated documentation files
6 * (the "Software"), to deal in the Software without restriction,
7 * including without limitation the rights to use, copy, modify, merge,
8 * publish, distribute, sublicense, and/or sell copies of the Software,
9 * and to permit persons to whom the Software is furnished to do so,
10 * subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
18 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
19 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
20 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
21 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22 */
23
24 #include <err.h>
25 #include <dev/class/i2c.h>
26
class_i2c_write(struct device * dev,uint8_t addr,const void * buf,size_t len)27 status_t class_i2c_write(struct device *dev, uint8_t addr, const void *buf, size_t len)
28 {
29 struct i2c_ops *ops = device_get_driver_ops(dev, struct i2c_ops, std);
30 if (!ops)
31 return ERR_NOT_CONFIGURED;
32
33 if (ops->write)
34 return ops->write(dev, addr, buf, len);
35 else
36 return ERR_NOT_SUPPORTED;
37 }
38
class_i2c_read(struct device * dev,uint8_t addr,void * buf,size_t len)39 status_t class_i2c_read(struct device *dev, uint8_t addr, void *buf, size_t len)
40 {
41 struct i2c_ops *ops = device_get_driver_ops(dev, struct i2c_ops, std);
42 if (!ops)
43 return ERR_NOT_CONFIGURED;
44
45 if (ops->read)
46 return ops->read(dev, addr, buf, len);
47 else
48 return ERR_NOT_SUPPORTED;
49 }
50
class_i2c_write_reg(struct device * dev,uint8_t addr,uint8_t reg,uint8_t value)51 status_t class_i2c_write_reg(struct device *dev, uint8_t addr, uint8_t reg, uint8_t value)
52 {
53 struct i2c_ops *ops = device_get_driver_ops(dev, struct i2c_ops, std);
54 if (!ops)
55 return ERR_NOT_CONFIGURED;
56
57 if (ops->write_reg)
58 return ops->write_reg(dev, addr, reg, value);
59 else
60 return ERR_NOT_SUPPORTED;
61 }
62
class_i2c_read_reg(struct device * dev,uint8_t addr,uint8_t reg,void * value)63 status_t class_i2c_read_reg(struct device *dev, uint8_t addr, uint8_t reg, void *value)
64 {
65 struct i2c_ops *ops = device_get_driver_ops(dev, struct i2c_ops, std);
66 if (!ops)
67 return ERR_NOT_CONFIGURED;
68
69 if (ops->read_reg)
70 return ops->read_reg(dev, addr, reg, value);
71 else
72 return ERR_NOT_SUPPORTED;
73 }
74
75