Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Industrial I/O driver for Microchip digital potentiometers |
| 3 | * Copyright (c) 2015 Axentia Technologies AB |
| 4 | * Author: Peter Rosin <peda@axentia.se> |
| 5 | * |
| 6 | * Datasheet: http://www.microchip.com/downloads/en/DeviceDoc/22096b.pdf |
| 7 | * |
| 8 | * DEVID #Wipers #Positions Resistor Opts (kOhm) i2c address |
| 9 | * mcp4531 1 129 5, 10, 50, 100 010111x |
| 10 | * mcp4532 1 129 5, 10, 50, 100 01011xx |
Florian Vaussard | 294ea6f | 2016-06-30 09:34:48 +0200 | [diff] [blame] | 11 | * mcp4541 1 129 5, 10, 50, 100 010111x |
| 12 | * mcp4542 1 129 5, 10, 50, 100 01011xx |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 13 | * mcp4551 1 257 5, 10, 50, 100 010111x |
| 14 | * mcp4552 1 257 5, 10, 50, 100 01011xx |
Florian Vaussard | 294ea6f | 2016-06-30 09:34:48 +0200 | [diff] [blame] | 15 | * mcp4561 1 257 5, 10, 50, 100 010111x |
| 16 | * mcp4562 1 257 5, 10, 50, 100 01011xx |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 17 | * mcp4631 2 129 5, 10, 50, 100 0101xxx |
| 18 | * mcp4632 2 129 5, 10, 50, 100 01011xx |
Florian Vaussard | 294ea6f | 2016-06-30 09:34:48 +0200 | [diff] [blame] | 19 | * mcp4641 2 129 5, 10, 50, 100 0101xxx |
| 20 | * mcp4642 2 129 5, 10, 50, 100 01011xx |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 21 | * mcp4651 2 257 5, 10, 50, 100 0101xxx |
| 22 | * mcp4652 2 257 5, 10, 50, 100 01011xx |
Florian Vaussard | 294ea6f | 2016-06-30 09:34:48 +0200 | [diff] [blame] | 23 | * mcp4661 2 257 5, 10, 50, 100 0101xxx |
| 24 | * mcp4662 2 257 5, 10, 50, 100 01011xx |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 25 | * |
| 26 | * This program is free software; you can redistribute it and/or modify it |
| 27 | * under the terms of the GNU General Public License version 2 as published by |
| 28 | * the Free Software Foundation. |
| 29 | */ |
| 30 | |
| 31 | #include <linux/module.h> |
| 32 | #include <linux/i2c.h> |
| 33 | #include <linux/err.h> |
Florian Vaussard | 2dc2e18 | 2016-06-30 09:34:50 +0200 | [diff] [blame] | 34 | #include <linux/of.h> |
| 35 | #include <linux/of_device.h> |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 36 | |
| 37 | #include <linux/iio/iio.h> |
| 38 | |
| 39 | struct mcp4531_cfg { |
| 40 | int wipers; |
| 41 | int max_pos; |
| 42 | int kohms; |
| 43 | }; |
| 44 | |
| 45 | enum mcp4531_type { |
| 46 | MCP453x_502, |
| 47 | MCP453x_103, |
| 48 | MCP453x_503, |
| 49 | MCP453x_104, |
Florian Vaussard | 294ea6f | 2016-06-30 09:34:48 +0200 | [diff] [blame] | 50 | MCP454x_502, |
| 51 | MCP454x_103, |
| 52 | MCP454x_503, |
| 53 | MCP454x_104, |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 54 | MCP455x_502, |
| 55 | MCP455x_103, |
| 56 | MCP455x_503, |
| 57 | MCP455x_104, |
Florian Vaussard | 294ea6f | 2016-06-30 09:34:48 +0200 | [diff] [blame] | 58 | MCP456x_502, |
| 59 | MCP456x_103, |
| 60 | MCP456x_503, |
| 61 | MCP456x_104, |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 62 | MCP463x_502, |
| 63 | MCP463x_103, |
| 64 | MCP463x_503, |
| 65 | MCP463x_104, |
Florian Vaussard | 294ea6f | 2016-06-30 09:34:48 +0200 | [diff] [blame] | 66 | MCP464x_502, |
| 67 | MCP464x_103, |
| 68 | MCP464x_503, |
| 69 | MCP464x_104, |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 70 | MCP465x_502, |
| 71 | MCP465x_103, |
| 72 | MCP465x_503, |
| 73 | MCP465x_104, |
Florian Vaussard | 294ea6f | 2016-06-30 09:34:48 +0200 | [diff] [blame] | 74 | MCP466x_502, |
| 75 | MCP466x_103, |
| 76 | MCP466x_503, |
| 77 | MCP466x_104, |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 78 | }; |
| 79 | |
| 80 | static const struct mcp4531_cfg mcp4531_cfg[] = { |
| 81 | [MCP453x_502] = { .wipers = 1, .max_pos = 128, .kohms = 5, }, |
| 82 | [MCP453x_103] = { .wipers = 1, .max_pos = 128, .kohms = 10, }, |
| 83 | [MCP453x_503] = { .wipers = 1, .max_pos = 128, .kohms = 50, }, |
| 84 | [MCP453x_104] = { .wipers = 1, .max_pos = 128, .kohms = 100, }, |
Florian Vaussard | 294ea6f | 2016-06-30 09:34:48 +0200 | [diff] [blame] | 85 | [MCP454x_502] = { .wipers = 1, .max_pos = 128, .kohms = 5, }, |
| 86 | [MCP454x_103] = { .wipers = 1, .max_pos = 128, .kohms = 10, }, |
| 87 | [MCP454x_503] = { .wipers = 1, .max_pos = 128, .kohms = 50, }, |
| 88 | [MCP454x_104] = { .wipers = 1, .max_pos = 128, .kohms = 100, }, |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 89 | [MCP455x_502] = { .wipers = 1, .max_pos = 256, .kohms = 5, }, |
| 90 | [MCP455x_103] = { .wipers = 1, .max_pos = 256, .kohms = 10, }, |
| 91 | [MCP455x_503] = { .wipers = 1, .max_pos = 256, .kohms = 50, }, |
| 92 | [MCP455x_104] = { .wipers = 1, .max_pos = 256, .kohms = 100, }, |
Florian Vaussard | 294ea6f | 2016-06-30 09:34:48 +0200 | [diff] [blame] | 93 | [MCP456x_502] = { .wipers = 1, .max_pos = 256, .kohms = 5, }, |
| 94 | [MCP456x_103] = { .wipers = 1, .max_pos = 256, .kohms = 10, }, |
| 95 | [MCP456x_503] = { .wipers = 1, .max_pos = 256, .kohms = 50, }, |
| 96 | [MCP456x_104] = { .wipers = 1, .max_pos = 256, .kohms = 100, }, |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 97 | [MCP463x_502] = { .wipers = 2, .max_pos = 128, .kohms = 5, }, |
| 98 | [MCP463x_103] = { .wipers = 2, .max_pos = 128, .kohms = 10, }, |
| 99 | [MCP463x_503] = { .wipers = 2, .max_pos = 128, .kohms = 50, }, |
| 100 | [MCP463x_104] = { .wipers = 2, .max_pos = 128, .kohms = 100, }, |
Florian Vaussard | 294ea6f | 2016-06-30 09:34:48 +0200 | [diff] [blame] | 101 | [MCP464x_502] = { .wipers = 2, .max_pos = 128, .kohms = 5, }, |
| 102 | [MCP464x_103] = { .wipers = 2, .max_pos = 128, .kohms = 10, }, |
| 103 | [MCP464x_503] = { .wipers = 2, .max_pos = 128, .kohms = 50, }, |
| 104 | [MCP464x_104] = { .wipers = 2, .max_pos = 128, .kohms = 100, }, |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 105 | [MCP465x_502] = { .wipers = 2, .max_pos = 256, .kohms = 5, }, |
| 106 | [MCP465x_103] = { .wipers = 2, .max_pos = 256, .kohms = 10, }, |
| 107 | [MCP465x_503] = { .wipers = 2, .max_pos = 256, .kohms = 50, }, |
| 108 | [MCP465x_104] = { .wipers = 2, .max_pos = 256, .kohms = 100, }, |
Florian Vaussard | 294ea6f | 2016-06-30 09:34:48 +0200 | [diff] [blame] | 109 | [MCP466x_502] = { .wipers = 2, .max_pos = 256, .kohms = 5, }, |
| 110 | [MCP466x_103] = { .wipers = 2, .max_pos = 256, .kohms = 10, }, |
| 111 | [MCP466x_503] = { .wipers = 2, .max_pos = 256, .kohms = 50, }, |
| 112 | [MCP466x_104] = { .wipers = 2, .max_pos = 256, .kohms = 100, }, |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 113 | }; |
| 114 | |
| 115 | #define MCP4531_WRITE (0 << 2) |
| 116 | #define MCP4531_INCR (1 << 2) |
| 117 | #define MCP4531_DECR (2 << 2) |
| 118 | #define MCP4531_READ (3 << 2) |
| 119 | |
| 120 | #define MCP4531_WIPER_SHIFT (4) |
| 121 | |
| 122 | struct mcp4531_data { |
| 123 | struct i2c_client *client; |
Slawomir Stepien | 91307cb | 2016-03-24 17:06:01 +0100 | [diff] [blame] | 124 | const struct mcp4531_cfg *cfg; |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 125 | }; |
| 126 | |
| 127 | #define MCP4531_CHANNEL(ch) { \ |
| 128 | .type = IIO_RESISTANCE, \ |
| 129 | .indexed = 1, \ |
| 130 | .output = 1, \ |
| 131 | .channel = (ch), \ |
| 132 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ |
| 133 | .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ |
| 134 | } |
| 135 | |
| 136 | static const struct iio_chan_spec mcp4531_channels[] = { |
| 137 | MCP4531_CHANNEL(0), |
| 138 | MCP4531_CHANNEL(1), |
| 139 | }; |
| 140 | |
| 141 | static int mcp4531_read_raw(struct iio_dev *indio_dev, |
| 142 | struct iio_chan_spec const *chan, |
| 143 | int *val, int *val2, long mask) |
| 144 | { |
| 145 | struct mcp4531_data *data = iio_priv(indio_dev); |
| 146 | int address = chan->channel << MCP4531_WIPER_SHIFT; |
| 147 | s32 ret; |
| 148 | |
| 149 | switch (mask) { |
| 150 | case IIO_CHAN_INFO_RAW: |
| 151 | ret = i2c_smbus_read_word_swapped(data->client, |
| 152 | MCP4531_READ | address); |
| 153 | if (ret < 0) |
| 154 | return ret; |
| 155 | *val = ret; |
| 156 | return IIO_VAL_INT; |
| 157 | case IIO_CHAN_INFO_SCALE: |
Slawomir Stepien | 91307cb | 2016-03-24 17:06:01 +0100 | [diff] [blame] | 158 | *val = 1000 * data->cfg->kohms; |
| 159 | *val2 = data->cfg->max_pos; |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 160 | return IIO_VAL_FRACTIONAL; |
| 161 | } |
| 162 | |
| 163 | return -EINVAL; |
| 164 | } |
| 165 | |
| 166 | static int mcp4531_write_raw(struct iio_dev *indio_dev, |
| 167 | struct iio_chan_spec const *chan, |
| 168 | int val, int val2, long mask) |
| 169 | { |
| 170 | struct mcp4531_data *data = iio_priv(indio_dev); |
| 171 | int address = chan->channel << MCP4531_WIPER_SHIFT; |
| 172 | |
| 173 | switch (mask) { |
| 174 | case IIO_CHAN_INFO_RAW: |
Slawomir Stepien | 91307cb | 2016-03-24 17:06:01 +0100 | [diff] [blame] | 175 | if (val > data->cfg->max_pos || val < 0) |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 176 | return -EINVAL; |
| 177 | break; |
| 178 | default: |
| 179 | return -EINVAL; |
| 180 | } |
| 181 | |
| 182 | return i2c_smbus_write_byte_data(data->client, |
| 183 | MCP4531_WRITE | address | (val >> 8), |
| 184 | val & 0xff); |
| 185 | } |
| 186 | |
| 187 | static const struct iio_info mcp4531_info = { |
| 188 | .read_raw = mcp4531_read_raw, |
| 189 | .write_raw = mcp4531_write_raw, |
| 190 | .driver_module = THIS_MODULE, |
| 191 | }; |
| 192 | |
Florian Vaussard | 2dc2e18 | 2016-06-30 09:34:50 +0200 | [diff] [blame] | 193 | #ifdef CONFIG_OF |
| 194 | |
| 195 | #define MCP4531_COMPATIBLE(of_compatible, cfg) { \ |
| 196 | .compatible = of_compatible, \ |
| 197 | .data = &mcp4531_cfg[cfg], \ |
| 198 | } |
| 199 | |
| 200 | static const struct of_device_id mcp4531_of_match[] = { |
| 201 | MCP4531_COMPATIBLE("microchip,mcp4531-502", MCP453x_502), |
| 202 | MCP4531_COMPATIBLE("microchip,mcp4531-103", MCP453x_103), |
| 203 | MCP4531_COMPATIBLE("microchip,mcp4531-503", MCP453x_503), |
| 204 | MCP4531_COMPATIBLE("microchip,mcp4531-104", MCP453x_104), |
| 205 | MCP4531_COMPATIBLE("microchip,mcp4532-502", MCP453x_502), |
| 206 | MCP4531_COMPATIBLE("microchip,mcp4532-103", MCP453x_103), |
| 207 | MCP4531_COMPATIBLE("microchip,mcp4532-503", MCP453x_503), |
| 208 | MCP4531_COMPATIBLE("microchip,mcp4532-104", MCP453x_104), |
| 209 | MCP4531_COMPATIBLE("microchip,mcp4541-502", MCP454x_502), |
| 210 | MCP4531_COMPATIBLE("microchip,mcp4541-103", MCP454x_103), |
| 211 | MCP4531_COMPATIBLE("microchip,mcp4541-503", MCP454x_503), |
| 212 | MCP4531_COMPATIBLE("microchip,mcp4541-104", MCP454x_104), |
| 213 | MCP4531_COMPATIBLE("microchip,mcp4542-502", MCP454x_502), |
| 214 | MCP4531_COMPATIBLE("microchip,mcp4542-103", MCP454x_103), |
| 215 | MCP4531_COMPATIBLE("microchip,mcp4542-503", MCP454x_503), |
| 216 | MCP4531_COMPATIBLE("microchip,mcp4542-104", MCP454x_104), |
| 217 | MCP4531_COMPATIBLE("microchip,mcp4551-502", MCP455x_502), |
| 218 | MCP4531_COMPATIBLE("microchip,mcp4551-103", MCP455x_103), |
| 219 | MCP4531_COMPATIBLE("microchip,mcp4551-503", MCP455x_503), |
| 220 | MCP4531_COMPATIBLE("microchip,mcp4551-104", MCP455x_104), |
| 221 | MCP4531_COMPATIBLE("microchip,mcp4552-502", MCP455x_502), |
| 222 | MCP4531_COMPATIBLE("microchip,mcp4552-103", MCP455x_103), |
| 223 | MCP4531_COMPATIBLE("microchip,mcp4552-503", MCP455x_503), |
| 224 | MCP4531_COMPATIBLE("microchip,mcp4552-104", MCP455x_104), |
| 225 | MCP4531_COMPATIBLE("microchip,mcp4561-502", MCP456x_502), |
| 226 | MCP4531_COMPATIBLE("microchip,mcp4561-103", MCP456x_103), |
| 227 | MCP4531_COMPATIBLE("microchip,mcp4561-503", MCP456x_503), |
| 228 | MCP4531_COMPATIBLE("microchip,mcp4561-104", MCP456x_104), |
| 229 | MCP4531_COMPATIBLE("microchip,mcp4562-502", MCP456x_502), |
| 230 | MCP4531_COMPATIBLE("microchip,mcp4562-103", MCP456x_103), |
| 231 | MCP4531_COMPATIBLE("microchip,mcp4562-503", MCP456x_503), |
| 232 | MCP4531_COMPATIBLE("microchip,mcp4562-104", MCP456x_104), |
| 233 | MCP4531_COMPATIBLE("microchip,mcp4631-502", MCP463x_502), |
| 234 | MCP4531_COMPATIBLE("microchip,mcp4631-103", MCP463x_103), |
| 235 | MCP4531_COMPATIBLE("microchip,mcp4631-503", MCP463x_503), |
| 236 | MCP4531_COMPATIBLE("microchip,mcp4631-104", MCP463x_104), |
| 237 | MCP4531_COMPATIBLE("microchip,mcp4632-502", MCP463x_502), |
| 238 | MCP4531_COMPATIBLE("microchip,mcp4632-103", MCP463x_103), |
| 239 | MCP4531_COMPATIBLE("microchip,mcp4632-503", MCP463x_503), |
| 240 | MCP4531_COMPATIBLE("microchip,mcp4632-104", MCP463x_104), |
| 241 | MCP4531_COMPATIBLE("microchip,mcp4641-502", MCP464x_502), |
| 242 | MCP4531_COMPATIBLE("microchip,mcp4641-103", MCP464x_103), |
| 243 | MCP4531_COMPATIBLE("microchip,mcp4641-503", MCP464x_503), |
| 244 | MCP4531_COMPATIBLE("microchip,mcp4641-104", MCP464x_104), |
| 245 | MCP4531_COMPATIBLE("microchip,mcp4642-502", MCP464x_502), |
| 246 | MCP4531_COMPATIBLE("microchip,mcp4642-103", MCP464x_103), |
| 247 | MCP4531_COMPATIBLE("microchip,mcp4642-503", MCP464x_503), |
| 248 | MCP4531_COMPATIBLE("microchip,mcp4642-104", MCP464x_104), |
| 249 | MCP4531_COMPATIBLE("microchip,mcp4651-502", MCP465x_502), |
| 250 | MCP4531_COMPATIBLE("microchip,mcp4651-103", MCP465x_103), |
| 251 | MCP4531_COMPATIBLE("microchip,mcp4651-503", MCP465x_503), |
| 252 | MCP4531_COMPATIBLE("microchip,mcp4651-104", MCP465x_104), |
| 253 | MCP4531_COMPATIBLE("microchip,mcp4652-502", MCP465x_502), |
| 254 | MCP4531_COMPATIBLE("microchip,mcp4652-103", MCP465x_103), |
| 255 | MCP4531_COMPATIBLE("microchip,mcp4652-503", MCP465x_503), |
| 256 | MCP4531_COMPATIBLE("microchip,mcp4652-104", MCP465x_104), |
| 257 | MCP4531_COMPATIBLE("microchip,mcp4661-502", MCP466x_502), |
| 258 | MCP4531_COMPATIBLE("microchip,mcp4661-103", MCP466x_103), |
| 259 | MCP4531_COMPATIBLE("microchip,mcp4661-503", MCP466x_503), |
| 260 | MCP4531_COMPATIBLE("microchip,mcp4661-104", MCP466x_104), |
| 261 | MCP4531_COMPATIBLE("microchip,mcp4662-502", MCP466x_502), |
| 262 | MCP4531_COMPATIBLE("microchip,mcp4662-103", MCP466x_103), |
| 263 | MCP4531_COMPATIBLE("microchip,mcp4662-503", MCP466x_503), |
| 264 | MCP4531_COMPATIBLE("microchip,mcp4662-104", MCP466x_104), |
| 265 | { /* sentinel */ } |
| 266 | }; |
| 267 | #endif |
| 268 | |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 269 | static int mcp4531_probe(struct i2c_client *client, |
| 270 | const struct i2c_device_id *id) |
| 271 | { |
| 272 | struct device *dev = &client->dev; |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 273 | struct mcp4531_data *data; |
| 274 | struct iio_dev *indio_dev; |
Florian Vaussard | 2dc2e18 | 2016-06-30 09:34:50 +0200 | [diff] [blame] | 275 | const struct of_device_id *match; |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 276 | |
| 277 | if (!i2c_check_functionality(client->adapter, |
| 278 | I2C_FUNC_SMBUS_WORD_DATA)) { |
| 279 | dev_err(dev, "SMBUS Word Data not supported\n"); |
Matt Ranostay | f8d9d3b | 2016-02-26 22:13:49 -0800 | [diff] [blame] | 280 | return -EOPNOTSUPP; |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 281 | } |
| 282 | |
| 283 | indio_dev = devm_iio_device_alloc(dev, sizeof(*data)); |
| 284 | if (!indio_dev) |
| 285 | return -ENOMEM; |
| 286 | data = iio_priv(indio_dev); |
| 287 | i2c_set_clientdata(client, indio_dev); |
| 288 | data->client = client; |
Florian Vaussard | 2dc2e18 | 2016-06-30 09:34:50 +0200 | [diff] [blame] | 289 | |
| 290 | match = of_match_device(of_match_ptr(mcp4531_of_match), dev); |
| 291 | if (match) |
| 292 | data->cfg = of_device_get_match_data(dev); |
| 293 | else |
| 294 | data->cfg = &mcp4531_cfg[id->driver_data]; |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 295 | |
| 296 | indio_dev->dev.parent = dev; |
| 297 | indio_dev->info = &mcp4531_info; |
| 298 | indio_dev->channels = mcp4531_channels; |
Slawomir Stepien | 91307cb | 2016-03-24 17:06:01 +0100 | [diff] [blame] | 299 | indio_dev->num_channels = data->cfg->wipers; |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 300 | indio_dev->name = client->name; |
| 301 | |
| 302 | return devm_iio_device_register(dev, indio_dev); |
| 303 | } |
| 304 | |
| 305 | static const struct i2c_device_id mcp4531_id[] = { |
| 306 | { "mcp4531-502", MCP453x_502 }, |
| 307 | { "mcp4531-103", MCP453x_103 }, |
| 308 | { "mcp4531-503", MCP453x_503 }, |
| 309 | { "mcp4531-104", MCP453x_104 }, |
| 310 | { "mcp4532-502", MCP453x_502 }, |
| 311 | { "mcp4532-103", MCP453x_103 }, |
| 312 | { "mcp4532-503", MCP453x_503 }, |
| 313 | { "mcp4532-104", MCP453x_104 }, |
Florian Vaussard | 294ea6f | 2016-06-30 09:34:48 +0200 | [diff] [blame] | 314 | { "mcp4541-502", MCP454x_502 }, |
| 315 | { "mcp4541-103", MCP454x_103 }, |
| 316 | { "mcp4541-503", MCP454x_503 }, |
| 317 | { "mcp4541-104", MCP454x_104 }, |
| 318 | { "mcp4542-502", MCP454x_502 }, |
| 319 | { "mcp4542-103", MCP454x_103 }, |
| 320 | { "mcp4542-503", MCP454x_503 }, |
| 321 | { "mcp4542-104", MCP454x_104 }, |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 322 | { "mcp4551-502", MCP455x_502 }, |
| 323 | { "mcp4551-103", MCP455x_103 }, |
| 324 | { "mcp4551-503", MCP455x_503 }, |
| 325 | { "mcp4551-104", MCP455x_104 }, |
| 326 | { "mcp4552-502", MCP455x_502 }, |
| 327 | { "mcp4552-103", MCP455x_103 }, |
| 328 | { "mcp4552-503", MCP455x_503 }, |
| 329 | { "mcp4552-104", MCP455x_104 }, |
Florian Vaussard | 294ea6f | 2016-06-30 09:34:48 +0200 | [diff] [blame] | 330 | { "mcp4561-502", MCP456x_502 }, |
| 331 | { "mcp4561-103", MCP456x_103 }, |
| 332 | { "mcp4561-503", MCP456x_503 }, |
| 333 | { "mcp4561-104", MCP456x_104 }, |
| 334 | { "mcp4562-502", MCP456x_502 }, |
| 335 | { "mcp4562-103", MCP456x_103 }, |
| 336 | { "mcp4562-503", MCP456x_503 }, |
| 337 | { "mcp4562-104", MCP456x_104 }, |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 338 | { "mcp4631-502", MCP463x_502 }, |
| 339 | { "mcp4631-103", MCP463x_103 }, |
| 340 | { "mcp4631-503", MCP463x_503 }, |
| 341 | { "mcp4631-104", MCP463x_104 }, |
| 342 | { "mcp4632-502", MCP463x_502 }, |
| 343 | { "mcp4632-103", MCP463x_103 }, |
| 344 | { "mcp4632-503", MCP463x_503 }, |
| 345 | { "mcp4632-104", MCP463x_104 }, |
Florian Vaussard | 294ea6f | 2016-06-30 09:34:48 +0200 | [diff] [blame] | 346 | { "mcp4641-502", MCP464x_502 }, |
| 347 | { "mcp4641-103", MCP464x_103 }, |
| 348 | { "mcp4641-503", MCP464x_503 }, |
| 349 | { "mcp4641-104", MCP464x_104 }, |
| 350 | { "mcp4642-502", MCP464x_502 }, |
| 351 | { "mcp4642-103", MCP464x_103 }, |
| 352 | { "mcp4642-503", MCP464x_503 }, |
| 353 | { "mcp4642-104", MCP464x_104 }, |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 354 | { "mcp4651-502", MCP465x_502 }, |
| 355 | { "mcp4651-103", MCP465x_103 }, |
| 356 | { "mcp4651-503", MCP465x_503 }, |
| 357 | { "mcp4651-104", MCP465x_104 }, |
| 358 | { "mcp4652-502", MCP465x_502 }, |
| 359 | { "mcp4652-103", MCP465x_103 }, |
| 360 | { "mcp4652-503", MCP465x_503 }, |
| 361 | { "mcp4652-104", MCP465x_104 }, |
Florian Vaussard | 294ea6f | 2016-06-30 09:34:48 +0200 | [diff] [blame] | 362 | { "mcp4661-502", MCP466x_502 }, |
| 363 | { "mcp4661-103", MCP466x_103 }, |
| 364 | { "mcp4661-503", MCP466x_503 }, |
| 365 | { "mcp4661-104", MCP466x_104 }, |
| 366 | { "mcp4662-502", MCP466x_502 }, |
| 367 | { "mcp4662-103", MCP466x_103 }, |
| 368 | { "mcp4662-503", MCP466x_503 }, |
| 369 | { "mcp4662-104", MCP466x_104 }, |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 370 | {} |
| 371 | }; |
| 372 | MODULE_DEVICE_TABLE(i2c, mcp4531_id); |
| 373 | |
| 374 | static struct i2c_driver mcp4531_driver = { |
| 375 | .driver = { |
| 376 | .name = "mcp4531", |
Florian Vaussard | 2dc2e18 | 2016-06-30 09:34:50 +0200 | [diff] [blame] | 377 | .of_match_table = of_match_ptr(mcp4531_of_match), |
Peter Rosin | c05dc2c | 2015-09-23 16:26:23 +0200 | [diff] [blame] | 378 | }, |
| 379 | .probe = mcp4531_probe, |
| 380 | .id_table = mcp4531_id, |
| 381 | }; |
| 382 | |
| 383 | module_i2c_driver(mcp4531_driver); |
| 384 | |
| 385 | MODULE_AUTHOR("Peter Rosin <peda@axentia.se>"); |
| 386 | MODULE_DESCRIPTION("MCP4531 digital potentiometer"); |
| 387 | MODULE_LICENSE("GPL"); |