1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Driver for the Analog Devices digital potentiometers (I2C bus)
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (C) 2010-2011 Michael Hennerich, Analog Devices Inc.
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <linux/i2c.h>
9*4882a593Smuzhiyun #include <linux/module.h>
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #include "ad525x_dpot.h"
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun /* I2C bus functions */
write_d8(void * client,u8 val)14*4882a593Smuzhiyun static int write_d8(void *client, u8 val)
15*4882a593Smuzhiyun {
16*4882a593Smuzhiyun return i2c_smbus_write_byte(client, val);
17*4882a593Smuzhiyun }
18*4882a593Smuzhiyun
write_r8d8(void * client,u8 reg,u8 val)19*4882a593Smuzhiyun static int write_r8d8(void *client, u8 reg, u8 val)
20*4882a593Smuzhiyun {
21*4882a593Smuzhiyun return i2c_smbus_write_byte_data(client, reg, val);
22*4882a593Smuzhiyun }
23*4882a593Smuzhiyun
write_r8d16(void * client,u8 reg,u16 val)24*4882a593Smuzhiyun static int write_r8d16(void *client, u8 reg, u16 val)
25*4882a593Smuzhiyun {
26*4882a593Smuzhiyun return i2c_smbus_write_word_data(client, reg, val);
27*4882a593Smuzhiyun }
28*4882a593Smuzhiyun
read_d8(void * client)29*4882a593Smuzhiyun static int read_d8(void *client)
30*4882a593Smuzhiyun {
31*4882a593Smuzhiyun return i2c_smbus_read_byte(client);
32*4882a593Smuzhiyun }
33*4882a593Smuzhiyun
read_r8d8(void * client,u8 reg)34*4882a593Smuzhiyun static int read_r8d8(void *client, u8 reg)
35*4882a593Smuzhiyun {
36*4882a593Smuzhiyun return i2c_smbus_read_byte_data(client, reg);
37*4882a593Smuzhiyun }
38*4882a593Smuzhiyun
read_r8d16(void * client,u8 reg)39*4882a593Smuzhiyun static int read_r8d16(void *client, u8 reg)
40*4882a593Smuzhiyun {
41*4882a593Smuzhiyun return i2c_smbus_read_word_data(client, reg);
42*4882a593Smuzhiyun }
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun static const struct ad_dpot_bus_ops bops = {
45*4882a593Smuzhiyun .read_d8 = read_d8,
46*4882a593Smuzhiyun .read_r8d8 = read_r8d8,
47*4882a593Smuzhiyun .read_r8d16 = read_r8d16,
48*4882a593Smuzhiyun .write_d8 = write_d8,
49*4882a593Smuzhiyun .write_r8d8 = write_r8d8,
50*4882a593Smuzhiyun .write_r8d16 = write_r8d16,
51*4882a593Smuzhiyun };
52*4882a593Smuzhiyun
ad_dpot_i2c_probe(struct i2c_client * client,const struct i2c_device_id * id)53*4882a593Smuzhiyun static int ad_dpot_i2c_probe(struct i2c_client *client,
54*4882a593Smuzhiyun const struct i2c_device_id *id)
55*4882a593Smuzhiyun {
56*4882a593Smuzhiyun struct ad_dpot_bus_data bdata = {
57*4882a593Smuzhiyun .client = client,
58*4882a593Smuzhiyun .bops = &bops,
59*4882a593Smuzhiyun };
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun if (!i2c_check_functionality(client->adapter,
62*4882a593Smuzhiyun I2C_FUNC_SMBUS_WORD_DATA)) {
63*4882a593Smuzhiyun dev_err(&client->dev, "SMBUS Word Data not Supported\n");
64*4882a593Smuzhiyun return -EIO;
65*4882a593Smuzhiyun }
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun return ad_dpot_probe(&client->dev, &bdata, id->driver_data, id->name);
68*4882a593Smuzhiyun }
69*4882a593Smuzhiyun
ad_dpot_i2c_remove(struct i2c_client * client)70*4882a593Smuzhiyun static int ad_dpot_i2c_remove(struct i2c_client *client)
71*4882a593Smuzhiyun {
72*4882a593Smuzhiyun return ad_dpot_remove(&client->dev);
73*4882a593Smuzhiyun }
74*4882a593Smuzhiyun
75*4882a593Smuzhiyun static const struct i2c_device_id ad_dpot_id[] = {
76*4882a593Smuzhiyun {"ad5258", AD5258_ID},
77*4882a593Smuzhiyun {"ad5259", AD5259_ID},
78*4882a593Smuzhiyun {"ad5251", AD5251_ID},
79*4882a593Smuzhiyun {"ad5252", AD5252_ID},
80*4882a593Smuzhiyun {"ad5253", AD5253_ID},
81*4882a593Smuzhiyun {"ad5254", AD5254_ID},
82*4882a593Smuzhiyun {"ad5255", AD5255_ID},
83*4882a593Smuzhiyun {"ad5241", AD5241_ID},
84*4882a593Smuzhiyun {"ad5242", AD5242_ID},
85*4882a593Smuzhiyun {"ad5243", AD5243_ID},
86*4882a593Smuzhiyun {"ad5245", AD5245_ID},
87*4882a593Smuzhiyun {"ad5246", AD5246_ID},
88*4882a593Smuzhiyun {"ad5247", AD5247_ID},
89*4882a593Smuzhiyun {"ad5248", AD5248_ID},
90*4882a593Smuzhiyun {"ad5280", AD5280_ID},
91*4882a593Smuzhiyun {"ad5282", AD5282_ID},
92*4882a593Smuzhiyun {"adn2860", ADN2860_ID},
93*4882a593Smuzhiyun {"ad5273", AD5273_ID},
94*4882a593Smuzhiyun {"ad5161", AD5161_ID},
95*4882a593Smuzhiyun {"ad5171", AD5171_ID},
96*4882a593Smuzhiyun {"ad5170", AD5170_ID},
97*4882a593Smuzhiyun {"ad5172", AD5172_ID},
98*4882a593Smuzhiyun {"ad5173", AD5173_ID},
99*4882a593Smuzhiyun {"ad5272", AD5272_ID},
100*4882a593Smuzhiyun {"ad5274", AD5274_ID},
101*4882a593Smuzhiyun {}
102*4882a593Smuzhiyun };
103*4882a593Smuzhiyun MODULE_DEVICE_TABLE(i2c, ad_dpot_id);
104*4882a593Smuzhiyun
105*4882a593Smuzhiyun static struct i2c_driver ad_dpot_i2c_driver = {
106*4882a593Smuzhiyun .driver = {
107*4882a593Smuzhiyun .name = "ad_dpot",
108*4882a593Smuzhiyun },
109*4882a593Smuzhiyun .probe = ad_dpot_i2c_probe,
110*4882a593Smuzhiyun .remove = ad_dpot_i2c_remove,
111*4882a593Smuzhiyun .id_table = ad_dpot_id,
112*4882a593Smuzhiyun };
113*4882a593Smuzhiyun
114*4882a593Smuzhiyun module_i2c_driver(ad_dpot_i2c_driver);
115*4882a593Smuzhiyun
116*4882a593Smuzhiyun MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
117*4882a593Smuzhiyun MODULE_DESCRIPTION("digital potentiometer I2C bus driver");
118*4882a593Smuzhiyun MODULE_LICENSE("GPL");
119