Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1 | /* |
| 2 | * ltr501.c - Support for Lite-On LTR501 ambient light and proximity sensor |
| 3 | * |
| 4 | * Copyright 2014 Peter Meerwald <pmeerw@pmeerw.net> |
| 5 | * |
| 6 | * This file is subject to the terms and conditions of version 2 of |
| 7 | * the GNU General Public License. See the file COPYING in the main |
| 8 | * directory of this archive for more details. |
| 9 | * |
| 10 | * 7-bit I2C slave address 0x23 |
| 11 | * |
Kuppuswamy Sathyanarayanan | eea53b4 | 2015-04-19 02:10:03 -0700 | [diff] [blame] | 12 | * TODO: IR LED characteristics |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 13 | */ |
| 14 | |
| 15 | #include <linux/module.h> |
| 16 | #include <linux/i2c.h> |
| 17 | #include <linux/err.h> |
| 18 | #include <linux/delay.h> |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 19 | #include <linux/regmap.h> |
Kuppuswamy Sathyanarayanan | 772154d | 2015-04-19 02:10:04 -0700 | [diff] [blame] | 20 | #include <linux/acpi.h> |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 21 | |
| 22 | #include <linux/iio/iio.h> |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 23 | #include <linux/iio/events.h> |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 24 | #include <linux/iio/sysfs.h> |
| 25 | #include <linux/iio/trigger_consumer.h> |
| 26 | #include <linux/iio/buffer.h> |
| 27 | #include <linux/iio/triggered_buffer.h> |
| 28 | |
| 29 | #define LTR501_DRV_NAME "ltr501" |
| 30 | |
| 31 | #define LTR501_ALS_CONTR 0x80 /* ALS operation mode, SW reset */ |
| 32 | #define LTR501_PS_CONTR 0x81 /* PS operation mode */ |
Kuppuswamy Sathyanarayanan | eea53b4 | 2015-04-19 02:10:03 -0700 | [diff] [blame] | 33 | #define LTR501_PS_MEAS_RATE 0x84 /* measurement rate*/ |
Kuppuswamy Sathyanarayanan | 844b470 | 2015-04-19 02:10:01 -0700 | [diff] [blame] | 34 | #define LTR501_ALS_MEAS_RATE 0x85 /* ALS integ time, measurement rate*/ |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 35 | #define LTR501_PART_ID 0x86 |
| 36 | #define LTR501_MANUFAC_ID 0x87 |
| 37 | #define LTR501_ALS_DATA1 0x88 /* 16-bit, little endian */ |
| 38 | #define LTR501_ALS_DATA0 0x8a /* 16-bit, little endian */ |
| 39 | #define LTR501_ALS_PS_STATUS 0x8c |
| 40 | #define LTR501_PS_DATA 0x8d /* 16-bit, little endian */ |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 41 | #define LTR501_INTR 0x8f /* output mode, polarity, mode */ |
| 42 | #define LTR501_PS_THRESH_UP 0x90 /* 11 bit, ps upper threshold */ |
| 43 | #define LTR501_PS_THRESH_LOW 0x92 /* 11 bit, ps lower threshold */ |
| 44 | #define LTR501_ALS_THRESH_UP 0x97 /* 16 bit, ALS upper threshold */ |
| 45 | #define LTR501_ALS_THRESH_LOW 0x99 /* 16 bit, ALS lower threshold */ |
Kuppuswamy Sathyanarayanan | eea53b4 | 2015-04-19 02:10:03 -0700 | [diff] [blame] | 46 | #define LTR501_INTR_PRST 0x9e /* ps thresh, als thresh */ |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 47 | #define LTR501_MAX_REG 0x9f |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 48 | |
| 49 | #define LTR501_ALS_CONTR_SW_RESET BIT(2) |
| 50 | #define LTR501_CONTR_PS_GAIN_MASK (BIT(3) | BIT(2)) |
| 51 | #define LTR501_CONTR_PS_GAIN_SHIFT 2 |
| 52 | #define LTR501_CONTR_ALS_GAIN_MASK BIT(3) |
| 53 | #define LTR501_CONTR_ACTIVE BIT(1) |
| 54 | |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 55 | #define LTR501_STATUS_ALS_INTR BIT(3) |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 56 | #define LTR501_STATUS_ALS_RDY BIT(2) |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 57 | #define LTR501_STATUS_PS_INTR BIT(1) |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 58 | #define LTR501_STATUS_PS_RDY BIT(0) |
| 59 | |
| 60 | #define LTR501_PS_DATA_MASK 0x7ff |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 61 | #define LTR501_PS_THRESH_MASK 0x7ff |
| 62 | #define LTR501_ALS_THRESH_MASK 0xffff |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 63 | |
Kuppuswamy Sathyanarayanan | eea53b4 | 2015-04-19 02:10:03 -0700 | [diff] [blame] | 64 | #define LTR501_ALS_DEF_PERIOD 500000 |
| 65 | #define LTR501_PS_DEF_PERIOD 100000 |
| 66 | |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 67 | #define LTR501_REGMAP_NAME "ltr501_regmap" |
| 68 | |
Kuppuswamy Sathyanarayanan | c06cee8 | 2015-05-15 18:23:21 -0700 | [diff] [blame] | 69 | #define LTR501_LUX_CONV(vis_coeff, vis_data, ir_coeff, ir_data) \ |
| 70 | ((vis_coeff * vis_data) - (ir_coeff * ir_data)) |
| 71 | |
Kuppuswamy Sathyanarayanan | 844b470 | 2015-04-19 02:10:01 -0700 | [diff] [blame] | 72 | static const int int_time_mapping[] = {100000, 50000, 200000, 400000}; |
| 73 | |
| 74 | static const struct reg_field reg_field_it = |
| 75 | REG_FIELD(LTR501_ALS_MEAS_RATE, 3, 4); |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 76 | static const struct reg_field reg_field_als_intr = |
| 77 | REG_FIELD(LTR501_INTR, 0, 0); |
| 78 | static const struct reg_field reg_field_ps_intr = |
| 79 | REG_FIELD(LTR501_INTR, 1, 1); |
Kuppuswamy Sathyanarayanan | eea53b4 | 2015-04-19 02:10:03 -0700 | [diff] [blame] | 80 | static const struct reg_field reg_field_als_rate = |
| 81 | REG_FIELD(LTR501_ALS_MEAS_RATE, 0, 2); |
| 82 | static const struct reg_field reg_field_ps_rate = |
| 83 | REG_FIELD(LTR501_PS_MEAS_RATE, 0, 3); |
| 84 | static const struct reg_field reg_field_als_prst = |
| 85 | REG_FIELD(LTR501_INTR_PRST, 0, 3); |
| 86 | static const struct reg_field reg_field_ps_prst = |
| 87 | REG_FIELD(LTR501_INTR_PRST, 4, 7); |
| 88 | |
| 89 | struct ltr501_samp_table { |
| 90 | int freq_val; /* repetition frequency in micro HZ*/ |
| 91 | int time_val; /* repetition rate in micro seconds */ |
| 92 | }; |
Kuppuswamy Sathyanarayanan | 844b470 | 2015-04-19 02:10:01 -0700 | [diff] [blame] | 93 | |
Daniel Baluta | 8592a7e | 2015-04-21 19:10:59 +0300 | [diff] [blame] | 94 | #define LTR501_RESERVED_GAIN -1 |
| 95 | |
| 96 | enum { |
| 97 | ltr501 = 0, |
| 98 | ltr559, |
Daniel Baluta | 035ebb1 | 2015-04-21 19:11:00 +0300 | [diff] [blame] | 99 | ltr301, |
Daniel Baluta | 8592a7e | 2015-04-21 19:10:59 +0300 | [diff] [blame] | 100 | }; |
| 101 | |
| 102 | struct ltr501_gain { |
| 103 | int scale; |
| 104 | int uscale; |
| 105 | }; |
| 106 | |
| 107 | static struct ltr501_gain ltr501_als_gain_tbl[] = { |
| 108 | {1, 0}, |
| 109 | {0, 5000}, |
| 110 | }; |
| 111 | |
| 112 | static struct ltr501_gain ltr559_als_gain_tbl[] = { |
| 113 | {1, 0}, |
| 114 | {0, 500000}, |
| 115 | {0, 250000}, |
| 116 | {0, 125000}, |
| 117 | {LTR501_RESERVED_GAIN, LTR501_RESERVED_GAIN}, |
| 118 | {LTR501_RESERVED_GAIN, LTR501_RESERVED_GAIN}, |
| 119 | {0, 20000}, |
| 120 | {0, 10000}, |
| 121 | }; |
| 122 | |
| 123 | static struct ltr501_gain ltr501_ps_gain_tbl[] = { |
| 124 | {1, 0}, |
| 125 | {0, 250000}, |
| 126 | {0, 125000}, |
| 127 | {0, 62500}, |
| 128 | }; |
| 129 | |
| 130 | static struct ltr501_gain ltr559_ps_gain_tbl[] = { |
| 131 | {0, 62500}, /* x16 gain */ |
| 132 | {0, 31250}, /* x32 gain */ |
| 133 | {0, 15625}, /* bits X1 are for x64 gain */ |
| 134 | {0, 15624}, |
| 135 | }; |
| 136 | |
| 137 | struct ltr501_chip_info { |
| 138 | u8 partid; |
| 139 | struct ltr501_gain *als_gain; |
| 140 | int als_gain_tbl_size; |
| 141 | struct ltr501_gain *ps_gain; |
| 142 | int ps_gain_tbl_size; |
| 143 | u8 als_mode_active; |
| 144 | u8 als_gain_mask; |
| 145 | u8 als_gain_shift; |
Daniel Baluta | 035ebb1 | 2015-04-21 19:11:00 +0300 | [diff] [blame] | 146 | struct iio_chan_spec const *channels; |
| 147 | const int no_channels; |
| 148 | const struct iio_info *info; |
| 149 | const struct iio_info *info_no_irq; |
Daniel Baluta | 8592a7e | 2015-04-21 19:10:59 +0300 | [diff] [blame] | 150 | }; |
| 151 | |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 152 | struct ltr501_data { |
| 153 | struct i2c_client *client; |
| 154 | struct mutex lock_als, lock_ps; |
Daniel Baluta | 8592a7e | 2015-04-21 19:10:59 +0300 | [diff] [blame] | 155 | struct ltr501_chip_info *chip_info; |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 156 | u8 als_contr, ps_contr; |
Kuppuswamy Sathyanarayanan | eea53b4 | 2015-04-19 02:10:03 -0700 | [diff] [blame] | 157 | int als_period, ps_period; /* period in micro seconds */ |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 158 | struct regmap *regmap; |
Kuppuswamy Sathyanarayanan | 844b470 | 2015-04-19 02:10:01 -0700 | [diff] [blame] | 159 | struct regmap_field *reg_it; |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 160 | struct regmap_field *reg_als_intr; |
| 161 | struct regmap_field *reg_ps_intr; |
Kuppuswamy Sathyanarayanan | eea53b4 | 2015-04-19 02:10:03 -0700 | [diff] [blame] | 162 | struct regmap_field *reg_als_rate; |
| 163 | struct regmap_field *reg_ps_rate; |
| 164 | struct regmap_field *reg_als_prst; |
| 165 | struct regmap_field *reg_ps_prst; |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 166 | }; |
| 167 | |
Kuppuswamy Sathyanarayanan | eea53b4 | 2015-04-19 02:10:03 -0700 | [diff] [blame] | 168 | static const struct ltr501_samp_table ltr501_als_samp_table[] = { |
| 169 | {20000000, 50000}, {10000000, 100000}, |
| 170 | {5000000, 200000}, {2000000, 500000}, |
| 171 | {1000000, 1000000}, {500000, 2000000}, |
| 172 | {500000, 2000000}, {500000, 2000000} |
| 173 | }; |
| 174 | |
| 175 | static const struct ltr501_samp_table ltr501_ps_samp_table[] = { |
| 176 | {20000000, 50000}, {14285714, 70000}, |
| 177 | {10000000, 100000}, {5000000, 200000}, |
| 178 | {2000000, 500000}, {1000000, 1000000}, |
| 179 | {500000, 2000000}, {500000, 2000000}, |
| 180 | {500000, 2000000} |
| 181 | }; |
| 182 | |
Markus Elfring | c08ae18 | 2015-12-19 14:14:54 +0100 | [diff] [blame] | 183 | static int ltr501_match_samp_freq(const struct ltr501_samp_table *tab, |
Kuppuswamy Sathyanarayanan | eea53b4 | 2015-04-19 02:10:03 -0700 | [diff] [blame] | 184 | int len, int val, int val2) |
| 185 | { |
| 186 | int i, freq; |
| 187 | |
| 188 | freq = val * 1000000 + val2; |
| 189 | |
| 190 | for (i = 0; i < len; i++) { |
| 191 | if (tab[i].freq_val == freq) |
| 192 | return i; |
| 193 | } |
| 194 | |
| 195 | return -EINVAL; |
| 196 | } |
| 197 | |
| 198 | static int ltr501_als_read_samp_freq(struct ltr501_data *data, |
| 199 | int *val, int *val2) |
| 200 | { |
| 201 | int ret, i; |
| 202 | |
| 203 | ret = regmap_field_read(data->reg_als_rate, &i); |
| 204 | if (ret < 0) |
| 205 | return ret; |
| 206 | |
| 207 | if (i < 0 || i >= ARRAY_SIZE(ltr501_als_samp_table)) |
| 208 | return -EINVAL; |
| 209 | |
| 210 | *val = ltr501_als_samp_table[i].freq_val / 1000000; |
| 211 | *val2 = ltr501_als_samp_table[i].freq_val % 1000000; |
| 212 | |
| 213 | return IIO_VAL_INT_PLUS_MICRO; |
| 214 | } |
| 215 | |
| 216 | static int ltr501_ps_read_samp_freq(struct ltr501_data *data, |
| 217 | int *val, int *val2) |
| 218 | { |
| 219 | int ret, i; |
| 220 | |
| 221 | ret = regmap_field_read(data->reg_ps_rate, &i); |
| 222 | if (ret < 0) |
| 223 | return ret; |
| 224 | |
| 225 | if (i < 0 || i >= ARRAY_SIZE(ltr501_ps_samp_table)) |
| 226 | return -EINVAL; |
| 227 | |
| 228 | *val = ltr501_ps_samp_table[i].freq_val / 1000000; |
| 229 | *val2 = ltr501_ps_samp_table[i].freq_val % 1000000; |
| 230 | |
| 231 | return IIO_VAL_INT_PLUS_MICRO; |
| 232 | } |
| 233 | |
| 234 | static int ltr501_als_write_samp_freq(struct ltr501_data *data, |
| 235 | int val, int val2) |
| 236 | { |
| 237 | int i, ret; |
| 238 | |
| 239 | i = ltr501_match_samp_freq(ltr501_als_samp_table, |
| 240 | ARRAY_SIZE(ltr501_als_samp_table), |
| 241 | val, val2); |
| 242 | |
| 243 | if (i < 0) |
| 244 | return i; |
| 245 | |
| 246 | mutex_lock(&data->lock_als); |
| 247 | ret = regmap_field_write(data->reg_als_rate, i); |
| 248 | mutex_unlock(&data->lock_als); |
| 249 | |
| 250 | return ret; |
| 251 | } |
| 252 | |
| 253 | static int ltr501_ps_write_samp_freq(struct ltr501_data *data, |
| 254 | int val, int val2) |
| 255 | { |
| 256 | int i, ret; |
| 257 | |
| 258 | i = ltr501_match_samp_freq(ltr501_ps_samp_table, |
| 259 | ARRAY_SIZE(ltr501_ps_samp_table), |
| 260 | val, val2); |
| 261 | |
| 262 | if (i < 0) |
| 263 | return i; |
| 264 | |
| 265 | mutex_lock(&data->lock_ps); |
| 266 | ret = regmap_field_write(data->reg_ps_rate, i); |
| 267 | mutex_unlock(&data->lock_ps); |
| 268 | |
| 269 | return ret; |
| 270 | } |
| 271 | |
| 272 | static int ltr501_als_read_samp_period(struct ltr501_data *data, int *val) |
| 273 | { |
| 274 | int ret, i; |
| 275 | |
| 276 | ret = regmap_field_read(data->reg_als_rate, &i); |
| 277 | if (ret < 0) |
| 278 | return ret; |
| 279 | |
| 280 | if (i < 0 || i >= ARRAY_SIZE(ltr501_als_samp_table)) |
| 281 | return -EINVAL; |
| 282 | |
| 283 | *val = ltr501_als_samp_table[i].time_val; |
| 284 | |
| 285 | return IIO_VAL_INT; |
| 286 | } |
| 287 | |
| 288 | static int ltr501_ps_read_samp_period(struct ltr501_data *data, int *val) |
| 289 | { |
| 290 | int ret, i; |
| 291 | |
| 292 | ret = regmap_field_read(data->reg_ps_rate, &i); |
| 293 | if (ret < 0) |
| 294 | return ret; |
| 295 | |
| 296 | if (i < 0 || i >= ARRAY_SIZE(ltr501_ps_samp_table)) |
| 297 | return -EINVAL; |
| 298 | |
| 299 | *val = ltr501_ps_samp_table[i].time_val; |
| 300 | |
| 301 | return IIO_VAL_INT; |
| 302 | } |
| 303 | |
Kuppuswamy Sathyanarayanan | c06cee8 | 2015-05-15 18:23:21 -0700 | [diff] [blame] | 304 | /* IR and visible spectrum coeff's are given in data sheet */ |
| 305 | static unsigned long ltr501_calculate_lux(u16 vis_data, u16 ir_data) |
| 306 | { |
| 307 | unsigned long ratio, lux; |
| 308 | |
| 309 | if (vis_data == 0) |
| 310 | return 0; |
| 311 | |
| 312 | /* multiply numerator by 100 to avoid handling ratio < 1 */ |
| 313 | ratio = DIV_ROUND_UP(ir_data * 100, ir_data + vis_data); |
| 314 | |
| 315 | if (ratio < 45) |
| 316 | lux = LTR501_LUX_CONV(1774, vis_data, -1105, ir_data); |
| 317 | else if (ratio >= 45 && ratio < 64) |
| 318 | lux = LTR501_LUX_CONV(3772, vis_data, 1336, ir_data); |
| 319 | else if (ratio >= 64 && ratio < 85) |
| 320 | lux = LTR501_LUX_CONV(1690, vis_data, 169, ir_data); |
| 321 | else |
| 322 | lux = 0; |
| 323 | |
| 324 | return lux / 1000; |
| 325 | } |
| 326 | |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 327 | static int ltr501_drdy(struct ltr501_data *data, u8 drdy_mask) |
| 328 | { |
| 329 | int tries = 100; |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 330 | int ret, status; |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 331 | |
| 332 | while (tries--) { |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 333 | ret = regmap_read(data->regmap, LTR501_ALS_PS_STATUS, &status); |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 334 | if (ret < 0) |
| 335 | return ret; |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 336 | if ((status & drdy_mask) == drdy_mask) |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 337 | return 0; |
| 338 | msleep(25); |
| 339 | } |
| 340 | |
| 341 | dev_err(&data->client->dev, "ltr501_drdy() failed, data not ready\n"); |
| 342 | return -EIO; |
| 343 | } |
| 344 | |
Kuppuswamy Sathyanarayanan | 844b470 | 2015-04-19 02:10:01 -0700 | [diff] [blame] | 345 | static int ltr501_set_it_time(struct ltr501_data *data, int it) |
| 346 | { |
| 347 | int ret, i, index = -1, status; |
| 348 | |
| 349 | for (i = 0; i < ARRAY_SIZE(int_time_mapping); i++) { |
| 350 | if (int_time_mapping[i] == it) { |
| 351 | index = i; |
| 352 | break; |
| 353 | } |
| 354 | } |
| 355 | /* Make sure integ time index is valid */ |
| 356 | if (index < 0) |
| 357 | return -EINVAL; |
| 358 | |
| 359 | ret = regmap_read(data->regmap, LTR501_ALS_CONTR, &status); |
| 360 | if (ret < 0) |
| 361 | return ret; |
| 362 | |
| 363 | if (status & LTR501_CONTR_ALS_GAIN_MASK) { |
| 364 | /* |
| 365 | * 200 ms and 400 ms integ time can only be |
| 366 | * used in dynamic range 1 |
| 367 | */ |
| 368 | if (index > 1) |
| 369 | return -EINVAL; |
| 370 | } else |
| 371 | /* 50 ms integ time can only be used in dynamic range 2 */ |
| 372 | if (index == 1) |
| 373 | return -EINVAL; |
| 374 | |
| 375 | return regmap_field_write(data->reg_it, index); |
| 376 | } |
| 377 | |
| 378 | /* read int time in micro seconds */ |
| 379 | static int ltr501_read_it_time(struct ltr501_data *data, int *val, int *val2) |
| 380 | { |
| 381 | int ret, index; |
| 382 | |
| 383 | ret = regmap_field_read(data->reg_it, &index); |
| 384 | if (ret < 0) |
| 385 | return ret; |
| 386 | |
| 387 | /* Make sure integ time index is valid */ |
| 388 | if (index < 0 || index >= ARRAY_SIZE(int_time_mapping)) |
| 389 | return -EINVAL; |
| 390 | |
| 391 | *val2 = int_time_mapping[index]; |
| 392 | *val = 0; |
| 393 | |
| 394 | return IIO_VAL_INT_PLUS_MICRO; |
| 395 | } |
| 396 | |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 397 | static int ltr501_read_als(struct ltr501_data *data, __le16 buf[2]) |
| 398 | { |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 399 | int ret; |
| 400 | |
| 401 | ret = ltr501_drdy(data, LTR501_STATUS_ALS_RDY); |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 402 | if (ret < 0) |
| 403 | return ret; |
| 404 | /* always read both ALS channels in given order */ |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 405 | return regmap_bulk_read(data->regmap, LTR501_ALS_DATA1, |
| 406 | buf, 2 * sizeof(__le16)); |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 407 | } |
| 408 | |
| 409 | static int ltr501_read_ps(struct ltr501_data *data) |
| 410 | { |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 411 | int ret, status; |
| 412 | |
| 413 | ret = ltr501_drdy(data, LTR501_STATUS_PS_RDY); |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 414 | if (ret < 0) |
| 415 | return ret; |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 416 | |
| 417 | ret = regmap_bulk_read(data->regmap, LTR501_PS_DATA, |
| 418 | &status, 2); |
| 419 | if (ret < 0) |
| 420 | return ret; |
| 421 | |
| 422 | return status; |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 423 | } |
| 424 | |
Kuppuswamy Sathyanarayanan | eea53b4 | 2015-04-19 02:10:03 -0700 | [diff] [blame] | 425 | static int ltr501_read_intr_prst(struct ltr501_data *data, |
| 426 | enum iio_chan_type type, |
| 427 | int *val2) |
| 428 | { |
| 429 | int ret, samp_period, prst; |
| 430 | |
| 431 | switch (type) { |
| 432 | case IIO_INTENSITY: |
| 433 | ret = regmap_field_read(data->reg_als_prst, &prst); |
| 434 | if (ret < 0) |
| 435 | return ret; |
| 436 | |
| 437 | ret = ltr501_als_read_samp_period(data, &samp_period); |
| 438 | |
| 439 | if (ret < 0) |
| 440 | return ret; |
| 441 | *val2 = samp_period * prst; |
| 442 | return IIO_VAL_INT_PLUS_MICRO; |
| 443 | case IIO_PROXIMITY: |
| 444 | ret = regmap_field_read(data->reg_ps_prst, &prst); |
| 445 | if (ret < 0) |
| 446 | return ret; |
| 447 | |
| 448 | ret = ltr501_ps_read_samp_period(data, &samp_period); |
| 449 | |
| 450 | if (ret < 0) |
| 451 | return ret; |
| 452 | |
| 453 | *val2 = samp_period * prst; |
| 454 | return IIO_VAL_INT_PLUS_MICRO; |
| 455 | default: |
| 456 | return -EINVAL; |
| 457 | } |
| 458 | |
| 459 | return -EINVAL; |
| 460 | } |
| 461 | |
| 462 | static int ltr501_write_intr_prst(struct ltr501_data *data, |
| 463 | enum iio_chan_type type, |
| 464 | int val, int val2) |
| 465 | { |
| 466 | int ret, samp_period, new_val; |
| 467 | unsigned long period; |
| 468 | |
| 469 | if (val < 0 || val2 < 0) |
| 470 | return -EINVAL; |
| 471 | |
| 472 | /* period in microseconds */ |
| 473 | period = ((val * 1000000) + val2); |
| 474 | |
| 475 | switch (type) { |
| 476 | case IIO_INTENSITY: |
| 477 | ret = ltr501_als_read_samp_period(data, &samp_period); |
| 478 | if (ret < 0) |
| 479 | return ret; |
| 480 | |
| 481 | /* period should be atleast equal to sampling period */ |
| 482 | if (period < samp_period) |
| 483 | return -EINVAL; |
| 484 | |
| 485 | new_val = DIV_ROUND_UP(period, samp_period); |
| 486 | if (new_val < 0 || new_val > 0x0f) |
| 487 | return -EINVAL; |
| 488 | |
| 489 | mutex_lock(&data->lock_als); |
| 490 | ret = regmap_field_write(data->reg_als_prst, new_val); |
| 491 | mutex_unlock(&data->lock_als); |
| 492 | if (ret >= 0) |
| 493 | data->als_period = period; |
| 494 | |
| 495 | return ret; |
| 496 | case IIO_PROXIMITY: |
| 497 | ret = ltr501_ps_read_samp_period(data, &samp_period); |
| 498 | if (ret < 0) |
| 499 | return ret; |
| 500 | |
| 501 | /* period should be atleast equal to rate */ |
| 502 | if (period < samp_period) |
| 503 | return -EINVAL; |
| 504 | |
| 505 | new_val = DIV_ROUND_UP(period, samp_period); |
| 506 | if (new_val < 0 || new_val > 0x0f) |
| 507 | return -EINVAL; |
| 508 | |
| 509 | mutex_lock(&data->lock_ps); |
| 510 | ret = regmap_field_write(data->reg_ps_prst, new_val); |
| 511 | mutex_unlock(&data->lock_ps); |
| 512 | if (ret >= 0) |
| 513 | data->ps_period = period; |
| 514 | |
| 515 | return ret; |
| 516 | default: |
| 517 | return -EINVAL; |
| 518 | } |
| 519 | |
| 520 | return -EINVAL; |
| 521 | } |
| 522 | |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 523 | static const struct iio_event_spec ltr501_als_event_spec[] = { |
| 524 | { |
| 525 | .type = IIO_EV_TYPE_THRESH, |
| 526 | .dir = IIO_EV_DIR_RISING, |
| 527 | .mask_separate = BIT(IIO_EV_INFO_VALUE), |
| 528 | }, { |
| 529 | .type = IIO_EV_TYPE_THRESH, |
| 530 | .dir = IIO_EV_DIR_FALLING, |
| 531 | .mask_separate = BIT(IIO_EV_INFO_VALUE), |
| 532 | }, { |
| 533 | .type = IIO_EV_TYPE_THRESH, |
| 534 | .dir = IIO_EV_DIR_EITHER, |
Kuppuswamy Sathyanarayanan | eea53b4 | 2015-04-19 02:10:03 -0700 | [diff] [blame] | 535 | .mask_separate = BIT(IIO_EV_INFO_ENABLE) | |
| 536 | BIT(IIO_EV_INFO_PERIOD), |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 537 | }, |
| 538 | |
| 539 | }; |
| 540 | |
| 541 | static const struct iio_event_spec ltr501_pxs_event_spec[] = { |
| 542 | { |
| 543 | .type = IIO_EV_TYPE_THRESH, |
| 544 | .dir = IIO_EV_DIR_RISING, |
| 545 | .mask_separate = BIT(IIO_EV_INFO_VALUE), |
| 546 | }, { |
| 547 | .type = IIO_EV_TYPE_THRESH, |
| 548 | .dir = IIO_EV_DIR_FALLING, |
| 549 | .mask_separate = BIT(IIO_EV_INFO_VALUE), |
| 550 | }, { |
| 551 | .type = IIO_EV_TYPE_THRESH, |
| 552 | .dir = IIO_EV_DIR_EITHER, |
Kuppuswamy Sathyanarayanan | eea53b4 | 2015-04-19 02:10:03 -0700 | [diff] [blame] | 553 | .mask_separate = BIT(IIO_EV_INFO_ENABLE) | |
| 554 | BIT(IIO_EV_INFO_PERIOD), |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 555 | }, |
| 556 | }; |
| 557 | |
| 558 | #define LTR501_INTENSITY_CHANNEL(_idx, _addr, _mod, _shared, \ |
| 559 | _evspec, _evsize) { \ |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 560 | .type = IIO_INTENSITY, \ |
| 561 | .modified = 1, \ |
| 562 | .address = (_addr), \ |
| 563 | .channel2 = (_mod), \ |
| 564 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ |
| 565 | .info_mask_shared_by_type = (_shared), \ |
| 566 | .scan_index = (_idx), \ |
| 567 | .scan_type = { \ |
| 568 | .sign = 'u', \ |
| 569 | .realbits = 16, \ |
| 570 | .storagebits = 16, \ |
| 571 | .endianness = IIO_CPU, \ |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 572 | }, \ |
| 573 | .event_spec = _evspec,\ |
| 574 | .num_event_specs = _evsize,\ |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 575 | } |
| 576 | |
Kuppuswamy Sathyanarayanan | c06cee8 | 2015-05-15 18:23:21 -0700 | [diff] [blame] | 577 | #define LTR501_LIGHT_CHANNEL() { \ |
| 578 | .type = IIO_LIGHT, \ |
| 579 | .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), \ |
| 580 | .scan_index = -1, \ |
| 581 | } |
| 582 | |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 583 | static const struct iio_chan_spec ltr501_channels[] = { |
Kuppuswamy Sathyanarayanan | c06cee8 | 2015-05-15 18:23:21 -0700 | [diff] [blame] | 584 | LTR501_LIGHT_CHANNEL(), |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 585 | LTR501_INTENSITY_CHANNEL(0, LTR501_ALS_DATA0, IIO_MOD_LIGHT_BOTH, 0, |
| 586 | ltr501_als_event_spec, |
| 587 | ARRAY_SIZE(ltr501_als_event_spec)), |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 588 | LTR501_INTENSITY_CHANNEL(1, LTR501_ALS_DATA1, IIO_MOD_LIGHT_IR, |
Kuppuswamy Sathyanarayanan | 844b470 | 2015-04-19 02:10:01 -0700 | [diff] [blame] | 589 | BIT(IIO_CHAN_INFO_SCALE) | |
Kuppuswamy Sathyanarayanan | eea53b4 | 2015-04-19 02:10:03 -0700 | [diff] [blame] | 590 | BIT(IIO_CHAN_INFO_INT_TIME) | |
| 591 | BIT(IIO_CHAN_INFO_SAMP_FREQ), |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 592 | NULL, 0), |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 593 | { |
| 594 | .type = IIO_PROXIMITY, |
| 595 | .address = LTR501_PS_DATA, |
| 596 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | |
| 597 | BIT(IIO_CHAN_INFO_SCALE), |
| 598 | .scan_index = 2, |
| 599 | .scan_type = { |
| 600 | .sign = 'u', |
| 601 | .realbits = 11, |
| 602 | .storagebits = 16, |
| 603 | .endianness = IIO_CPU, |
| 604 | }, |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 605 | .event_spec = ltr501_pxs_event_spec, |
| 606 | .num_event_specs = ARRAY_SIZE(ltr501_pxs_event_spec), |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 607 | }, |
| 608 | IIO_CHAN_SOFT_TIMESTAMP(3), |
| 609 | }; |
| 610 | |
Daniel Baluta | 035ebb1 | 2015-04-21 19:11:00 +0300 | [diff] [blame] | 611 | static const struct iio_chan_spec ltr301_channels[] = { |
Kuppuswamy Sathyanarayanan | c06cee8 | 2015-05-15 18:23:21 -0700 | [diff] [blame] | 612 | LTR501_LIGHT_CHANNEL(), |
Daniel Baluta | 035ebb1 | 2015-04-21 19:11:00 +0300 | [diff] [blame] | 613 | LTR501_INTENSITY_CHANNEL(0, LTR501_ALS_DATA0, IIO_MOD_LIGHT_BOTH, 0, |
| 614 | ltr501_als_event_spec, |
| 615 | ARRAY_SIZE(ltr501_als_event_spec)), |
| 616 | LTR501_INTENSITY_CHANNEL(1, LTR501_ALS_DATA1, IIO_MOD_LIGHT_IR, |
| 617 | BIT(IIO_CHAN_INFO_SCALE) | |
| 618 | BIT(IIO_CHAN_INFO_INT_TIME) | |
| 619 | BIT(IIO_CHAN_INFO_SAMP_FREQ), |
| 620 | NULL, 0), |
| 621 | IIO_CHAN_SOFT_TIMESTAMP(2), |
| 622 | }; |
| 623 | |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 624 | static int ltr501_read_raw(struct iio_dev *indio_dev, |
Daniel Baluta | abda2b4 | 2015-04-09 17:17:47 +0300 | [diff] [blame] | 625 | struct iio_chan_spec const *chan, |
| 626 | int *val, int *val2, long mask) |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 627 | { |
| 628 | struct ltr501_data *data = iio_priv(indio_dev); |
| 629 | __le16 buf[2]; |
| 630 | int ret, i; |
| 631 | |
| 632 | switch (mask) { |
Kuppuswamy Sathyanarayanan | c06cee8 | 2015-05-15 18:23:21 -0700 | [diff] [blame] | 633 | case IIO_CHAN_INFO_PROCESSED: |
| 634 | if (iio_buffer_enabled(indio_dev)) |
| 635 | return -EBUSY; |
| 636 | |
| 637 | switch (chan->type) { |
| 638 | case IIO_LIGHT: |
| 639 | mutex_lock(&data->lock_als); |
| 640 | ret = ltr501_read_als(data, buf); |
| 641 | mutex_unlock(&data->lock_als); |
| 642 | if (ret < 0) |
| 643 | return ret; |
| 644 | *val = ltr501_calculate_lux(le16_to_cpu(buf[1]), |
| 645 | le16_to_cpu(buf[0])); |
| 646 | return IIO_VAL_INT; |
| 647 | default: |
| 648 | return -EINVAL; |
| 649 | } |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 650 | case IIO_CHAN_INFO_RAW: |
| 651 | if (iio_buffer_enabled(indio_dev)) |
| 652 | return -EBUSY; |
| 653 | |
| 654 | switch (chan->type) { |
| 655 | case IIO_INTENSITY: |
| 656 | mutex_lock(&data->lock_als); |
| 657 | ret = ltr501_read_als(data, buf); |
| 658 | mutex_unlock(&data->lock_als); |
| 659 | if (ret < 0) |
| 660 | return ret; |
| 661 | *val = le16_to_cpu(chan->address == LTR501_ALS_DATA1 ? |
Daniel Baluta | abda2b4 | 2015-04-09 17:17:47 +0300 | [diff] [blame] | 662 | buf[0] : buf[1]); |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 663 | return IIO_VAL_INT; |
| 664 | case IIO_PROXIMITY: |
| 665 | mutex_lock(&data->lock_ps); |
| 666 | ret = ltr501_read_ps(data); |
| 667 | mutex_unlock(&data->lock_ps); |
| 668 | if (ret < 0) |
| 669 | return ret; |
| 670 | *val = ret & LTR501_PS_DATA_MASK; |
| 671 | return IIO_VAL_INT; |
| 672 | default: |
| 673 | return -EINVAL; |
| 674 | } |
| 675 | case IIO_CHAN_INFO_SCALE: |
| 676 | switch (chan->type) { |
| 677 | case IIO_INTENSITY: |
Daniel Baluta | 8592a7e | 2015-04-21 19:10:59 +0300 | [diff] [blame] | 678 | i = (data->als_contr & data->chip_info->als_gain_mask) |
| 679 | >> data->chip_info->als_gain_shift; |
| 680 | *val = data->chip_info->als_gain[i].scale; |
| 681 | *val2 = data->chip_info->als_gain[i].uscale; |
| 682 | return IIO_VAL_INT_PLUS_MICRO; |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 683 | case IIO_PROXIMITY: |
| 684 | i = (data->ps_contr & LTR501_CONTR_PS_GAIN_MASK) >> |
| 685 | LTR501_CONTR_PS_GAIN_SHIFT; |
Daniel Baluta | 8592a7e | 2015-04-21 19:10:59 +0300 | [diff] [blame] | 686 | *val = data->chip_info->ps_gain[i].scale; |
| 687 | *val2 = data->chip_info->ps_gain[i].uscale; |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 688 | return IIO_VAL_INT_PLUS_MICRO; |
| 689 | default: |
| 690 | return -EINVAL; |
| 691 | } |
Kuppuswamy Sathyanarayanan | 844b470 | 2015-04-19 02:10:01 -0700 | [diff] [blame] | 692 | case IIO_CHAN_INFO_INT_TIME: |
| 693 | switch (chan->type) { |
| 694 | case IIO_INTENSITY: |
| 695 | return ltr501_read_it_time(data, val, val2); |
| 696 | default: |
| 697 | return -EINVAL; |
| 698 | } |
Kuppuswamy Sathyanarayanan | eea53b4 | 2015-04-19 02:10:03 -0700 | [diff] [blame] | 699 | case IIO_CHAN_INFO_SAMP_FREQ: |
| 700 | switch (chan->type) { |
| 701 | case IIO_INTENSITY: |
| 702 | return ltr501_als_read_samp_freq(data, val, val2); |
| 703 | case IIO_PROXIMITY: |
| 704 | return ltr501_ps_read_samp_freq(data, val, val2); |
| 705 | default: |
| 706 | return -EINVAL; |
| 707 | } |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 708 | } |
| 709 | return -EINVAL; |
| 710 | } |
| 711 | |
Daniel Baluta | 8592a7e | 2015-04-21 19:10:59 +0300 | [diff] [blame] | 712 | static int ltr501_get_gain_index(struct ltr501_gain *gain, int size, |
| 713 | int val, int val2) |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 714 | { |
| 715 | int i; |
| 716 | |
Daniel Baluta | 8592a7e | 2015-04-21 19:10:59 +0300 | [diff] [blame] | 717 | for (i = 0; i < size; i++) |
| 718 | if (val == gain[i].scale && val2 == gain[i].uscale) |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 719 | return i; |
| 720 | |
| 721 | return -1; |
| 722 | } |
| 723 | |
| 724 | static int ltr501_write_raw(struct iio_dev *indio_dev, |
Daniel Baluta | abda2b4 | 2015-04-09 17:17:47 +0300 | [diff] [blame] | 725 | struct iio_chan_spec const *chan, |
| 726 | int val, int val2, long mask) |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 727 | { |
| 728 | struct ltr501_data *data = iio_priv(indio_dev); |
Kuppuswamy Sathyanarayanan | eea53b4 | 2015-04-19 02:10:03 -0700 | [diff] [blame] | 729 | int i, ret, freq_val, freq_val2; |
Daniel Baluta | 8592a7e | 2015-04-21 19:10:59 +0300 | [diff] [blame] | 730 | struct ltr501_chip_info *info = data->chip_info; |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 731 | |
| 732 | if (iio_buffer_enabled(indio_dev)) |
| 733 | return -EBUSY; |
| 734 | |
| 735 | switch (mask) { |
| 736 | case IIO_CHAN_INFO_SCALE: |
| 737 | switch (chan->type) { |
| 738 | case IIO_INTENSITY: |
Daniel Baluta | 8592a7e | 2015-04-21 19:10:59 +0300 | [diff] [blame] | 739 | i = ltr501_get_gain_index(info->als_gain, |
| 740 | info->als_gain_tbl_size, |
| 741 | val, val2); |
| 742 | if (i < 0) |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 743 | return -EINVAL; |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 744 | |
Daniel Baluta | 8592a7e | 2015-04-21 19:10:59 +0300 | [diff] [blame] | 745 | data->als_contr &= ~info->als_gain_mask; |
| 746 | data->als_contr |= i << info->als_gain_shift; |
| 747 | |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 748 | return regmap_write(data->regmap, LTR501_ALS_CONTR, |
| 749 | data->als_contr); |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 750 | case IIO_PROXIMITY: |
Daniel Baluta | 8592a7e | 2015-04-21 19:10:59 +0300 | [diff] [blame] | 751 | i = ltr501_get_gain_index(info->ps_gain, |
| 752 | info->ps_gain_tbl_size, |
| 753 | val, val2); |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 754 | if (i < 0) |
| 755 | return -EINVAL; |
| 756 | data->ps_contr &= ~LTR501_CONTR_PS_GAIN_MASK; |
| 757 | data->ps_contr |= i << LTR501_CONTR_PS_GAIN_SHIFT; |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 758 | |
| 759 | return regmap_write(data->regmap, LTR501_PS_CONTR, |
| 760 | data->ps_contr); |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 761 | default: |
| 762 | return -EINVAL; |
| 763 | } |
Kuppuswamy Sathyanarayanan | 844b470 | 2015-04-19 02:10:01 -0700 | [diff] [blame] | 764 | case IIO_CHAN_INFO_INT_TIME: |
| 765 | switch (chan->type) { |
| 766 | case IIO_INTENSITY: |
| 767 | if (val != 0) |
| 768 | return -EINVAL; |
| 769 | mutex_lock(&data->lock_als); |
| 770 | i = ltr501_set_it_time(data, val2); |
| 771 | mutex_unlock(&data->lock_als); |
| 772 | return i; |
| 773 | default: |
| 774 | return -EINVAL; |
| 775 | } |
Kuppuswamy Sathyanarayanan | eea53b4 | 2015-04-19 02:10:03 -0700 | [diff] [blame] | 776 | case IIO_CHAN_INFO_SAMP_FREQ: |
| 777 | switch (chan->type) { |
| 778 | case IIO_INTENSITY: |
| 779 | ret = ltr501_als_read_samp_freq(data, &freq_val, |
| 780 | &freq_val2); |
| 781 | if (ret < 0) |
| 782 | return ret; |
| 783 | |
| 784 | ret = ltr501_als_write_samp_freq(data, val, val2); |
| 785 | if (ret < 0) |
| 786 | return ret; |
| 787 | |
| 788 | /* update persistence count when changing frequency */ |
| 789 | ret = ltr501_write_intr_prst(data, chan->type, |
| 790 | 0, data->als_period); |
| 791 | |
| 792 | if (ret < 0) |
| 793 | return ltr501_als_write_samp_freq(data, |
| 794 | freq_val, |
| 795 | freq_val2); |
| 796 | return ret; |
| 797 | case IIO_PROXIMITY: |
| 798 | ret = ltr501_ps_read_samp_freq(data, &freq_val, |
| 799 | &freq_val2); |
| 800 | if (ret < 0) |
| 801 | return ret; |
| 802 | |
| 803 | ret = ltr501_ps_write_samp_freq(data, val, val2); |
| 804 | if (ret < 0) |
| 805 | return ret; |
| 806 | |
| 807 | /* update persistence count when changing frequency */ |
| 808 | ret = ltr501_write_intr_prst(data, chan->type, |
| 809 | 0, data->ps_period); |
| 810 | |
| 811 | if (ret < 0) |
| 812 | return ltr501_ps_write_samp_freq(data, |
| 813 | freq_val, |
| 814 | freq_val2); |
| 815 | return ret; |
| 816 | default: |
| 817 | return -EINVAL; |
| 818 | } |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 819 | } |
| 820 | return -EINVAL; |
| 821 | } |
| 822 | |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 823 | static int ltr501_read_thresh(struct iio_dev *indio_dev, |
| 824 | const struct iio_chan_spec *chan, |
| 825 | enum iio_event_type type, |
| 826 | enum iio_event_direction dir, |
| 827 | enum iio_event_info info, |
| 828 | int *val, int *val2) |
| 829 | { |
| 830 | struct ltr501_data *data = iio_priv(indio_dev); |
| 831 | int ret, thresh_data; |
| 832 | |
| 833 | switch (chan->type) { |
| 834 | case IIO_INTENSITY: |
| 835 | switch (dir) { |
| 836 | case IIO_EV_DIR_RISING: |
| 837 | ret = regmap_bulk_read(data->regmap, |
| 838 | LTR501_ALS_THRESH_UP, |
| 839 | &thresh_data, 2); |
| 840 | if (ret < 0) |
| 841 | return ret; |
| 842 | *val = thresh_data & LTR501_ALS_THRESH_MASK; |
| 843 | return IIO_VAL_INT; |
| 844 | case IIO_EV_DIR_FALLING: |
| 845 | ret = regmap_bulk_read(data->regmap, |
| 846 | LTR501_ALS_THRESH_LOW, |
| 847 | &thresh_data, 2); |
| 848 | if (ret < 0) |
| 849 | return ret; |
| 850 | *val = thresh_data & LTR501_ALS_THRESH_MASK; |
| 851 | return IIO_VAL_INT; |
| 852 | default: |
| 853 | return -EINVAL; |
| 854 | } |
| 855 | case IIO_PROXIMITY: |
| 856 | switch (dir) { |
| 857 | case IIO_EV_DIR_RISING: |
| 858 | ret = regmap_bulk_read(data->regmap, |
| 859 | LTR501_PS_THRESH_UP, |
| 860 | &thresh_data, 2); |
| 861 | if (ret < 0) |
| 862 | return ret; |
| 863 | *val = thresh_data & LTR501_PS_THRESH_MASK; |
| 864 | return IIO_VAL_INT; |
| 865 | case IIO_EV_DIR_FALLING: |
| 866 | ret = regmap_bulk_read(data->regmap, |
| 867 | LTR501_PS_THRESH_LOW, |
| 868 | &thresh_data, 2); |
| 869 | if (ret < 0) |
| 870 | return ret; |
| 871 | *val = thresh_data & LTR501_PS_THRESH_MASK; |
| 872 | return IIO_VAL_INT; |
| 873 | default: |
| 874 | return -EINVAL; |
| 875 | } |
| 876 | default: |
| 877 | return -EINVAL; |
| 878 | } |
| 879 | |
| 880 | return -EINVAL; |
| 881 | } |
| 882 | |
| 883 | static int ltr501_write_thresh(struct iio_dev *indio_dev, |
| 884 | const struct iio_chan_spec *chan, |
| 885 | enum iio_event_type type, |
| 886 | enum iio_event_direction dir, |
| 887 | enum iio_event_info info, |
| 888 | int val, int val2) |
| 889 | { |
| 890 | struct ltr501_data *data = iio_priv(indio_dev); |
| 891 | int ret; |
| 892 | |
| 893 | if (val < 0) |
| 894 | return -EINVAL; |
| 895 | |
| 896 | switch (chan->type) { |
| 897 | case IIO_INTENSITY: |
| 898 | if (val > LTR501_ALS_THRESH_MASK) |
| 899 | return -EINVAL; |
| 900 | switch (dir) { |
| 901 | case IIO_EV_DIR_RISING: |
| 902 | mutex_lock(&data->lock_als); |
| 903 | ret = regmap_bulk_write(data->regmap, |
| 904 | LTR501_ALS_THRESH_UP, |
| 905 | &val, 2); |
| 906 | mutex_unlock(&data->lock_als); |
| 907 | return ret; |
| 908 | case IIO_EV_DIR_FALLING: |
| 909 | mutex_lock(&data->lock_als); |
| 910 | ret = regmap_bulk_write(data->regmap, |
| 911 | LTR501_ALS_THRESH_LOW, |
| 912 | &val, 2); |
| 913 | mutex_unlock(&data->lock_als); |
| 914 | return ret; |
| 915 | default: |
| 916 | return -EINVAL; |
| 917 | } |
| 918 | case IIO_PROXIMITY: |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 919 | if (val > LTR501_PS_THRESH_MASK) |
| 920 | return -EINVAL; |
Kuppuswamy Sathyanarayanan | 01e537f | 2015-05-15 16:42:56 -0700 | [diff] [blame] | 921 | switch (dir) { |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 922 | case IIO_EV_DIR_RISING: |
| 923 | mutex_lock(&data->lock_ps); |
| 924 | ret = regmap_bulk_write(data->regmap, |
| 925 | LTR501_PS_THRESH_UP, |
| 926 | &val, 2); |
| 927 | mutex_unlock(&data->lock_ps); |
| 928 | return ret; |
| 929 | case IIO_EV_DIR_FALLING: |
| 930 | mutex_lock(&data->lock_ps); |
| 931 | ret = regmap_bulk_write(data->regmap, |
| 932 | LTR501_PS_THRESH_LOW, |
| 933 | &val, 2); |
| 934 | mutex_unlock(&data->lock_ps); |
| 935 | return ret; |
| 936 | default: |
| 937 | return -EINVAL; |
| 938 | } |
| 939 | default: |
| 940 | return -EINVAL; |
| 941 | } |
| 942 | |
| 943 | return -EINVAL; |
| 944 | } |
| 945 | |
Kuppuswamy Sathyanarayanan | eea53b4 | 2015-04-19 02:10:03 -0700 | [diff] [blame] | 946 | static int ltr501_read_event(struct iio_dev *indio_dev, |
| 947 | const struct iio_chan_spec *chan, |
| 948 | enum iio_event_type type, |
| 949 | enum iio_event_direction dir, |
| 950 | enum iio_event_info info, |
| 951 | int *val, int *val2) |
| 952 | { |
| 953 | int ret; |
| 954 | |
| 955 | switch (info) { |
| 956 | case IIO_EV_INFO_VALUE: |
| 957 | return ltr501_read_thresh(indio_dev, chan, type, dir, |
| 958 | info, val, val2); |
| 959 | case IIO_EV_INFO_PERIOD: |
| 960 | ret = ltr501_read_intr_prst(iio_priv(indio_dev), |
| 961 | chan->type, val2); |
| 962 | *val = *val2 / 1000000; |
| 963 | *val2 = *val2 % 1000000; |
| 964 | return ret; |
| 965 | default: |
| 966 | return -EINVAL; |
| 967 | } |
| 968 | |
| 969 | return -EINVAL; |
| 970 | } |
| 971 | |
| 972 | static int ltr501_write_event(struct iio_dev *indio_dev, |
| 973 | const struct iio_chan_spec *chan, |
| 974 | enum iio_event_type type, |
| 975 | enum iio_event_direction dir, |
| 976 | enum iio_event_info info, |
| 977 | int val, int val2) |
| 978 | { |
| 979 | switch (info) { |
| 980 | case IIO_EV_INFO_VALUE: |
| 981 | if (val2 != 0) |
| 982 | return -EINVAL; |
| 983 | return ltr501_write_thresh(indio_dev, chan, type, dir, |
| 984 | info, val, val2); |
| 985 | case IIO_EV_INFO_PERIOD: |
| 986 | return ltr501_write_intr_prst(iio_priv(indio_dev), chan->type, |
| 987 | val, val2); |
| 988 | default: |
| 989 | return -EINVAL; |
| 990 | } |
| 991 | |
| 992 | return -EINVAL; |
| 993 | } |
| 994 | |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 995 | static int ltr501_read_event_config(struct iio_dev *indio_dev, |
| 996 | const struct iio_chan_spec *chan, |
| 997 | enum iio_event_type type, |
| 998 | enum iio_event_direction dir) |
| 999 | { |
| 1000 | struct ltr501_data *data = iio_priv(indio_dev); |
| 1001 | int ret, status; |
| 1002 | |
| 1003 | switch (chan->type) { |
| 1004 | case IIO_INTENSITY: |
| 1005 | ret = regmap_field_read(data->reg_als_intr, &status); |
| 1006 | if (ret < 0) |
| 1007 | return ret; |
| 1008 | return status; |
| 1009 | case IIO_PROXIMITY: |
| 1010 | ret = regmap_field_read(data->reg_ps_intr, &status); |
| 1011 | if (ret < 0) |
| 1012 | return ret; |
| 1013 | return status; |
| 1014 | default: |
| 1015 | return -EINVAL; |
| 1016 | } |
| 1017 | |
| 1018 | return -EINVAL; |
| 1019 | } |
| 1020 | |
| 1021 | static int ltr501_write_event_config(struct iio_dev *indio_dev, |
| 1022 | const struct iio_chan_spec *chan, |
| 1023 | enum iio_event_type type, |
| 1024 | enum iio_event_direction dir, int state) |
| 1025 | { |
| 1026 | struct ltr501_data *data = iio_priv(indio_dev); |
| 1027 | int ret; |
| 1028 | |
| 1029 | /* only 1 and 0 are valid inputs */ |
Jonathan Cameron | 2fdaf3f | 2015-05-02 11:25:48 +0100 | [diff] [blame] | 1030 | if (state != 1 && state != 0) |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 1031 | return -EINVAL; |
| 1032 | |
| 1033 | switch (chan->type) { |
| 1034 | case IIO_INTENSITY: |
| 1035 | mutex_lock(&data->lock_als); |
| 1036 | ret = regmap_field_write(data->reg_als_intr, state); |
| 1037 | mutex_unlock(&data->lock_als); |
| 1038 | return ret; |
| 1039 | case IIO_PROXIMITY: |
| 1040 | mutex_lock(&data->lock_ps); |
| 1041 | ret = regmap_field_write(data->reg_ps_intr, state); |
| 1042 | mutex_unlock(&data->lock_ps); |
| 1043 | return ret; |
| 1044 | default: |
| 1045 | return -EINVAL; |
| 1046 | } |
| 1047 | |
| 1048 | return -EINVAL; |
| 1049 | } |
| 1050 | |
Daniel Baluta | 8592a7e | 2015-04-21 19:10:59 +0300 | [diff] [blame] | 1051 | static ssize_t ltr501_show_proximity_scale_avail(struct device *dev, |
| 1052 | struct device_attribute *attr, |
| 1053 | char *buf) |
| 1054 | { |
| 1055 | struct ltr501_data *data = iio_priv(dev_to_iio_dev(dev)); |
| 1056 | struct ltr501_chip_info *info = data->chip_info; |
| 1057 | ssize_t len = 0; |
| 1058 | int i; |
| 1059 | |
| 1060 | for (i = 0; i < info->ps_gain_tbl_size; i++) { |
| 1061 | if (info->ps_gain[i].scale == LTR501_RESERVED_GAIN) |
| 1062 | continue; |
| 1063 | len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%06d ", |
| 1064 | info->ps_gain[i].scale, |
| 1065 | info->ps_gain[i].uscale); |
| 1066 | } |
| 1067 | |
| 1068 | buf[len - 1] = '\n'; |
| 1069 | |
| 1070 | return len; |
| 1071 | } |
| 1072 | |
| 1073 | static ssize_t ltr501_show_intensity_scale_avail(struct device *dev, |
| 1074 | struct device_attribute *attr, |
| 1075 | char *buf) |
| 1076 | { |
| 1077 | struct ltr501_data *data = iio_priv(dev_to_iio_dev(dev)); |
| 1078 | struct ltr501_chip_info *info = data->chip_info; |
| 1079 | ssize_t len = 0; |
| 1080 | int i; |
| 1081 | |
| 1082 | for (i = 0; i < info->als_gain_tbl_size; i++) { |
| 1083 | if (info->als_gain[i].scale == LTR501_RESERVED_GAIN) |
| 1084 | continue; |
| 1085 | len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%06d ", |
| 1086 | info->als_gain[i].scale, |
| 1087 | info->als_gain[i].uscale); |
| 1088 | } |
| 1089 | |
| 1090 | buf[len - 1] = '\n'; |
| 1091 | |
| 1092 | return len; |
| 1093 | } |
| 1094 | |
Kuppuswamy Sathyanarayanan | 844b470 | 2015-04-19 02:10:01 -0700 | [diff] [blame] | 1095 | static IIO_CONST_ATTR_INT_TIME_AVAIL("0.05 0.1 0.2 0.4"); |
Kuppuswamy Sathyanarayanan | eea53b4 | 2015-04-19 02:10:03 -0700 | [diff] [blame] | 1096 | static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("20 10 5 2 1 0.5"); |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1097 | |
Daniel Baluta | 8592a7e | 2015-04-21 19:10:59 +0300 | [diff] [blame] | 1098 | static IIO_DEVICE_ATTR(in_proximity_scale_available, S_IRUGO, |
| 1099 | ltr501_show_proximity_scale_avail, NULL, 0); |
| 1100 | static IIO_DEVICE_ATTR(in_intensity_scale_available, S_IRUGO, |
| 1101 | ltr501_show_intensity_scale_avail, NULL, 0); |
| 1102 | |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1103 | static struct attribute *ltr501_attributes[] = { |
Daniel Baluta | 8592a7e | 2015-04-21 19:10:59 +0300 | [diff] [blame] | 1104 | &iio_dev_attr_in_proximity_scale_available.dev_attr.attr, |
| 1105 | &iio_dev_attr_in_intensity_scale_available.dev_attr.attr, |
Kuppuswamy Sathyanarayanan | 844b470 | 2015-04-19 02:10:01 -0700 | [diff] [blame] | 1106 | &iio_const_attr_integration_time_available.dev_attr.attr, |
Kuppuswamy Sathyanarayanan | eea53b4 | 2015-04-19 02:10:03 -0700 | [diff] [blame] | 1107 | &iio_const_attr_sampling_frequency_available.dev_attr.attr, |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1108 | NULL |
| 1109 | }; |
| 1110 | |
Daniel Baluta | 035ebb1 | 2015-04-21 19:11:00 +0300 | [diff] [blame] | 1111 | static struct attribute *ltr301_attributes[] = { |
| 1112 | &iio_dev_attr_in_intensity_scale_available.dev_attr.attr, |
| 1113 | &iio_const_attr_integration_time_available.dev_attr.attr, |
| 1114 | &iio_const_attr_sampling_frequency_available.dev_attr.attr, |
| 1115 | NULL |
| 1116 | }; |
| 1117 | |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1118 | static const struct attribute_group ltr501_attribute_group = { |
| 1119 | .attrs = ltr501_attributes, |
| 1120 | }; |
| 1121 | |
Daniel Baluta | 035ebb1 | 2015-04-21 19:11:00 +0300 | [diff] [blame] | 1122 | static const struct attribute_group ltr301_attribute_group = { |
| 1123 | .attrs = ltr301_attributes, |
| 1124 | }; |
| 1125 | |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 1126 | static const struct iio_info ltr501_info_no_irq = { |
| 1127 | .read_raw = ltr501_read_raw, |
| 1128 | .write_raw = ltr501_write_raw, |
| 1129 | .attrs = <r501_attribute_group, |
| 1130 | .driver_module = THIS_MODULE, |
| 1131 | }; |
| 1132 | |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1133 | static const struct iio_info ltr501_info = { |
| 1134 | .read_raw = ltr501_read_raw, |
| 1135 | .write_raw = ltr501_write_raw, |
| 1136 | .attrs = <r501_attribute_group, |
Kuppuswamy Sathyanarayanan | eea53b4 | 2015-04-19 02:10:03 -0700 | [diff] [blame] | 1137 | .read_event_value = <r501_read_event, |
| 1138 | .write_event_value = <r501_write_event, |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 1139 | .read_event_config = <r501_read_event_config, |
| 1140 | .write_event_config = <r501_write_event_config, |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1141 | .driver_module = THIS_MODULE, |
| 1142 | }; |
| 1143 | |
Daniel Baluta | 035ebb1 | 2015-04-21 19:11:00 +0300 | [diff] [blame] | 1144 | static const struct iio_info ltr301_info_no_irq = { |
| 1145 | .read_raw = ltr501_read_raw, |
| 1146 | .write_raw = ltr501_write_raw, |
| 1147 | .attrs = <r301_attribute_group, |
| 1148 | .driver_module = THIS_MODULE, |
| 1149 | }; |
| 1150 | |
| 1151 | static const struct iio_info ltr301_info = { |
| 1152 | .read_raw = ltr501_read_raw, |
| 1153 | .write_raw = ltr501_write_raw, |
| 1154 | .attrs = <r301_attribute_group, |
| 1155 | .read_event_value = <r501_read_event, |
| 1156 | .write_event_value = <r501_write_event, |
| 1157 | .read_event_config = <r501_read_event_config, |
| 1158 | .write_event_config = <r501_write_event_config, |
| 1159 | .driver_module = THIS_MODULE, |
| 1160 | }; |
| 1161 | |
Daniel Baluta | 8592a7e | 2015-04-21 19:10:59 +0300 | [diff] [blame] | 1162 | static struct ltr501_chip_info ltr501_chip_info_tbl[] = { |
| 1163 | [ltr501] = { |
| 1164 | .partid = 0x08, |
| 1165 | .als_gain = ltr501_als_gain_tbl, |
| 1166 | .als_gain_tbl_size = ARRAY_SIZE(ltr501_als_gain_tbl), |
| 1167 | .ps_gain = ltr501_ps_gain_tbl, |
| 1168 | .ps_gain_tbl_size = ARRAY_SIZE(ltr501_ps_gain_tbl), |
| 1169 | .als_mode_active = BIT(0) | BIT(1), |
| 1170 | .als_gain_mask = BIT(3), |
| 1171 | .als_gain_shift = 3, |
Daniel Baluta | 035ebb1 | 2015-04-21 19:11:00 +0300 | [diff] [blame] | 1172 | .info = <r501_info, |
| 1173 | .info_no_irq = <r501_info_no_irq, |
| 1174 | .channels = ltr501_channels, |
| 1175 | .no_channels = ARRAY_SIZE(ltr501_channels), |
Daniel Baluta | 8592a7e | 2015-04-21 19:10:59 +0300 | [diff] [blame] | 1176 | }, |
| 1177 | [ltr559] = { |
| 1178 | .partid = 0x09, |
| 1179 | .als_gain = ltr559_als_gain_tbl, |
| 1180 | .als_gain_tbl_size = ARRAY_SIZE(ltr559_als_gain_tbl), |
| 1181 | .ps_gain = ltr559_ps_gain_tbl, |
| 1182 | .ps_gain_tbl_size = ARRAY_SIZE(ltr559_ps_gain_tbl), |
| 1183 | .als_mode_active = BIT(1), |
| 1184 | .als_gain_mask = BIT(2) | BIT(3) | BIT(4), |
| 1185 | .als_gain_shift = 2, |
Daniel Baluta | 035ebb1 | 2015-04-21 19:11:00 +0300 | [diff] [blame] | 1186 | .info = <r501_info, |
| 1187 | .info_no_irq = <r501_info_no_irq, |
| 1188 | .channels = ltr501_channels, |
| 1189 | .no_channels = ARRAY_SIZE(ltr501_channels), |
| 1190 | }, |
| 1191 | [ltr301] = { |
| 1192 | .partid = 0x08, |
| 1193 | .als_gain = ltr501_als_gain_tbl, |
| 1194 | .als_gain_tbl_size = ARRAY_SIZE(ltr501_als_gain_tbl), |
| 1195 | .als_mode_active = BIT(0) | BIT(1), |
| 1196 | .als_gain_mask = BIT(3), |
| 1197 | .als_gain_shift = 3, |
| 1198 | .info = <r301_info, |
| 1199 | .info_no_irq = <r301_info_no_irq, |
| 1200 | .channels = ltr301_channels, |
| 1201 | .no_channels = ARRAY_SIZE(ltr301_channels), |
Daniel Baluta | 8592a7e | 2015-04-21 19:10:59 +0300 | [diff] [blame] | 1202 | }, |
| 1203 | }; |
| 1204 | |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 1205 | static int ltr501_write_contr(struct ltr501_data *data, u8 als_val, u8 ps_val) |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1206 | { |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 1207 | int ret; |
| 1208 | |
| 1209 | ret = regmap_write(data->regmap, LTR501_ALS_CONTR, als_val); |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1210 | if (ret < 0) |
| 1211 | return ret; |
| 1212 | |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 1213 | return regmap_write(data->regmap, LTR501_PS_CONTR, ps_val); |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1214 | } |
| 1215 | |
| 1216 | static irqreturn_t ltr501_trigger_handler(int irq, void *p) |
| 1217 | { |
| 1218 | struct iio_poll_func *pf = p; |
| 1219 | struct iio_dev *indio_dev = pf->indio_dev; |
| 1220 | struct ltr501_data *data = iio_priv(indio_dev); |
| 1221 | u16 buf[8]; |
| 1222 | __le16 als_buf[2]; |
| 1223 | u8 mask = 0; |
| 1224 | int j = 0; |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 1225 | int ret, psdata; |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1226 | |
| 1227 | memset(buf, 0, sizeof(buf)); |
| 1228 | |
| 1229 | /* figure out which data needs to be ready */ |
| 1230 | if (test_bit(0, indio_dev->active_scan_mask) || |
Daniel Baluta | abda2b4 | 2015-04-09 17:17:47 +0300 | [diff] [blame] | 1231 | test_bit(1, indio_dev->active_scan_mask)) |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1232 | mask |= LTR501_STATUS_ALS_RDY; |
| 1233 | if (test_bit(2, indio_dev->active_scan_mask)) |
| 1234 | mask |= LTR501_STATUS_PS_RDY; |
| 1235 | |
| 1236 | ret = ltr501_drdy(data, mask); |
| 1237 | if (ret < 0) |
| 1238 | goto done; |
| 1239 | |
| 1240 | if (mask & LTR501_STATUS_ALS_RDY) { |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 1241 | ret = regmap_bulk_read(data->regmap, LTR501_ALS_DATA1, |
| 1242 | (u8 *)als_buf, sizeof(als_buf)); |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1243 | if (ret < 0) |
| 1244 | return ret; |
| 1245 | if (test_bit(0, indio_dev->active_scan_mask)) |
| 1246 | buf[j++] = le16_to_cpu(als_buf[1]); |
| 1247 | if (test_bit(1, indio_dev->active_scan_mask)) |
| 1248 | buf[j++] = le16_to_cpu(als_buf[0]); |
| 1249 | } |
| 1250 | |
| 1251 | if (mask & LTR501_STATUS_PS_RDY) { |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 1252 | ret = regmap_bulk_read(data->regmap, LTR501_PS_DATA, |
| 1253 | &psdata, 2); |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1254 | if (ret < 0) |
| 1255 | goto done; |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 1256 | buf[j++] = psdata & LTR501_PS_DATA_MASK; |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1257 | } |
| 1258 | |
Daniel Baluta | abda2b4 | 2015-04-09 17:17:47 +0300 | [diff] [blame] | 1259 | iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns()); |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1260 | |
| 1261 | done: |
| 1262 | iio_trigger_notify_done(indio_dev->trig); |
| 1263 | |
| 1264 | return IRQ_HANDLED; |
| 1265 | } |
| 1266 | |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 1267 | static irqreturn_t ltr501_interrupt_handler(int irq, void *private) |
| 1268 | { |
| 1269 | struct iio_dev *indio_dev = private; |
| 1270 | struct ltr501_data *data = iio_priv(indio_dev); |
| 1271 | int ret, status; |
| 1272 | |
| 1273 | ret = regmap_read(data->regmap, LTR501_ALS_PS_STATUS, &status); |
| 1274 | if (ret < 0) { |
| 1275 | dev_err(&data->client->dev, |
| 1276 | "irq read int reg failed\n"); |
| 1277 | return IRQ_HANDLED; |
| 1278 | } |
| 1279 | |
| 1280 | if (status & LTR501_STATUS_ALS_INTR) |
| 1281 | iio_push_event(indio_dev, |
| 1282 | IIO_UNMOD_EVENT_CODE(IIO_INTENSITY, 0, |
| 1283 | IIO_EV_TYPE_THRESH, |
| 1284 | IIO_EV_DIR_EITHER), |
| 1285 | iio_get_time_ns()); |
| 1286 | |
| 1287 | if (status & LTR501_STATUS_PS_INTR) |
| 1288 | iio_push_event(indio_dev, |
| 1289 | IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 0, |
| 1290 | IIO_EV_TYPE_THRESH, |
| 1291 | IIO_EV_DIR_EITHER), |
| 1292 | iio_get_time_ns()); |
| 1293 | |
| 1294 | return IRQ_HANDLED; |
| 1295 | } |
| 1296 | |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1297 | static int ltr501_init(struct ltr501_data *data) |
| 1298 | { |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 1299 | int ret, status; |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1300 | |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 1301 | ret = regmap_read(data->regmap, LTR501_ALS_CONTR, &status); |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1302 | if (ret < 0) |
| 1303 | return ret; |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1304 | |
Hartmut Knaack | 5919a08 | 2015-06-28 12:31:53 +0200 | [diff] [blame] | 1305 | data->als_contr = status | data->chip_info->als_mode_active; |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 1306 | |
| 1307 | ret = regmap_read(data->regmap, LTR501_PS_CONTR, &status); |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1308 | if (ret < 0) |
| 1309 | return ret; |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1310 | |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 1311 | data->ps_contr = status | LTR501_CONTR_ACTIVE; |
| 1312 | |
Kuppuswamy Sathyanarayanan | eea53b4 | 2015-04-19 02:10:03 -0700 | [diff] [blame] | 1313 | ret = ltr501_read_intr_prst(data, IIO_INTENSITY, &data->als_period); |
| 1314 | if (ret < 0) |
| 1315 | return ret; |
| 1316 | |
| 1317 | ret = ltr501_read_intr_prst(data, IIO_PROXIMITY, &data->ps_period); |
| 1318 | if (ret < 0) |
| 1319 | return ret; |
| 1320 | |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 1321 | return ltr501_write_contr(data, data->als_contr, data->ps_contr); |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1322 | } |
| 1323 | |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 1324 | static bool ltr501_is_volatile_reg(struct device *dev, unsigned int reg) |
| 1325 | { |
| 1326 | switch (reg) { |
| 1327 | case LTR501_ALS_DATA1: |
| 1328 | case LTR501_ALS_DATA0: |
| 1329 | case LTR501_ALS_PS_STATUS: |
| 1330 | case LTR501_PS_DATA: |
| 1331 | return true; |
| 1332 | default: |
| 1333 | return false; |
| 1334 | } |
| 1335 | } |
| 1336 | |
| 1337 | static struct regmap_config ltr501_regmap_config = { |
| 1338 | .name = LTR501_REGMAP_NAME, |
| 1339 | .reg_bits = 8, |
| 1340 | .val_bits = 8, |
| 1341 | .max_register = LTR501_MAX_REG, |
| 1342 | .cache_type = REGCACHE_RBTREE, |
| 1343 | .volatile_reg = ltr501_is_volatile_reg, |
| 1344 | }; |
| 1345 | |
Cristina Opriceana | 1ca510b | 2015-04-01 18:50:17 +0300 | [diff] [blame] | 1346 | static int ltr501_powerdown(struct ltr501_data *data) |
| 1347 | { |
Daniel Baluta | 8592a7e | 2015-04-21 19:10:59 +0300 | [diff] [blame] | 1348 | return ltr501_write_contr(data, data->als_contr & |
| 1349 | ~data->chip_info->als_mode_active, |
Cristina Opriceana | 1ca510b | 2015-04-01 18:50:17 +0300 | [diff] [blame] | 1350 | data->ps_contr & ~LTR501_CONTR_ACTIVE); |
| 1351 | } |
| 1352 | |
Daniel Baluta | 8592a7e | 2015-04-21 19:10:59 +0300 | [diff] [blame] | 1353 | static const char *ltr501_match_acpi_device(struct device *dev, int *chip_idx) |
| 1354 | { |
| 1355 | const struct acpi_device_id *id; |
| 1356 | |
| 1357 | id = acpi_match_device(dev->driver->acpi_match_table, dev); |
| 1358 | if (!id) |
| 1359 | return NULL; |
| 1360 | *chip_idx = id->driver_data; |
| 1361 | return dev_name(dev); |
| 1362 | } |
| 1363 | |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1364 | static int ltr501_probe(struct i2c_client *client, |
Daniel Baluta | abda2b4 | 2015-04-09 17:17:47 +0300 | [diff] [blame] | 1365 | const struct i2c_device_id *id) |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1366 | { |
| 1367 | struct ltr501_data *data; |
| 1368 | struct iio_dev *indio_dev; |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 1369 | struct regmap *regmap; |
Daniel Baluta | 8592a7e | 2015-04-21 19:10:59 +0300 | [diff] [blame] | 1370 | int ret, partid, chip_idx = 0; |
| 1371 | const char *name = NULL; |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1372 | |
| 1373 | indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); |
| 1374 | if (!indio_dev) |
| 1375 | return -ENOMEM; |
| 1376 | |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 1377 | regmap = devm_regmap_init_i2c(client, <r501_regmap_config); |
| 1378 | if (IS_ERR(regmap)) { |
| 1379 | dev_err(&client->dev, "Regmap initialization failed.\n"); |
| 1380 | return PTR_ERR(regmap); |
| 1381 | } |
| 1382 | |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1383 | data = iio_priv(indio_dev); |
| 1384 | i2c_set_clientdata(client, indio_dev); |
| 1385 | data->client = client; |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 1386 | data->regmap = regmap; |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1387 | mutex_init(&data->lock_als); |
| 1388 | mutex_init(&data->lock_ps); |
| 1389 | |
Kuppuswamy Sathyanarayanan | 844b470 | 2015-04-19 02:10:01 -0700 | [diff] [blame] | 1390 | data->reg_it = devm_regmap_field_alloc(&client->dev, regmap, |
| 1391 | reg_field_it); |
| 1392 | if (IS_ERR(data->reg_it)) { |
| 1393 | dev_err(&client->dev, "Integ time reg field init failed.\n"); |
| 1394 | return PTR_ERR(data->reg_it); |
| 1395 | } |
| 1396 | |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 1397 | data->reg_als_intr = devm_regmap_field_alloc(&client->dev, regmap, |
| 1398 | reg_field_als_intr); |
| 1399 | if (IS_ERR(data->reg_als_intr)) { |
| 1400 | dev_err(&client->dev, "ALS intr mode reg field init failed\n"); |
| 1401 | return PTR_ERR(data->reg_als_intr); |
| 1402 | } |
| 1403 | |
| 1404 | data->reg_ps_intr = devm_regmap_field_alloc(&client->dev, regmap, |
| 1405 | reg_field_ps_intr); |
| 1406 | if (IS_ERR(data->reg_ps_intr)) { |
| 1407 | dev_err(&client->dev, "PS intr mode reg field init failed.\n"); |
| 1408 | return PTR_ERR(data->reg_ps_intr); |
| 1409 | } |
| 1410 | |
Kuppuswamy Sathyanarayanan | eea53b4 | 2015-04-19 02:10:03 -0700 | [diff] [blame] | 1411 | data->reg_als_rate = devm_regmap_field_alloc(&client->dev, regmap, |
| 1412 | reg_field_als_rate); |
| 1413 | if (IS_ERR(data->reg_als_rate)) { |
| 1414 | dev_err(&client->dev, "ALS samp rate field init failed.\n"); |
| 1415 | return PTR_ERR(data->reg_als_rate); |
| 1416 | } |
| 1417 | |
| 1418 | data->reg_ps_rate = devm_regmap_field_alloc(&client->dev, regmap, |
| 1419 | reg_field_ps_rate); |
| 1420 | if (IS_ERR(data->reg_ps_rate)) { |
| 1421 | dev_err(&client->dev, "PS samp rate field init failed.\n"); |
| 1422 | return PTR_ERR(data->reg_ps_rate); |
| 1423 | } |
| 1424 | |
| 1425 | data->reg_als_prst = devm_regmap_field_alloc(&client->dev, regmap, |
| 1426 | reg_field_als_prst); |
| 1427 | if (IS_ERR(data->reg_als_prst)) { |
| 1428 | dev_err(&client->dev, "ALS prst reg field init failed\n"); |
| 1429 | return PTR_ERR(data->reg_als_prst); |
| 1430 | } |
| 1431 | |
| 1432 | data->reg_ps_prst = devm_regmap_field_alloc(&client->dev, regmap, |
| 1433 | reg_field_ps_prst); |
| 1434 | if (IS_ERR(data->reg_ps_prst)) { |
| 1435 | dev_err(&client->dev, "PS prst reg field init failed.\n"); |
| 1436 | return PTR_ERR(data->reg_ps_prst); |
| 1437 | } |
| 1438 | |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 1439 | ret = regmap_read(data->regmap, LTR501_PART_ID, &partid); |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1440 | if (ret < 0) |
| 1441 | return ret; |
Daniel Baluta | 8592a7e | 2015-04-21 19:10:59 +0300 | [diff] [blame] | 1442 | |
| 1443 | if (id) { |
| 1444 | name = id->name; |
| 1445 | chip_idx = id->driver_data; |
| 1446 | } else if (ACPI_HANDLE(&client->dev)) { |
| 1447 | name = ltr501_match_acpi_device(&client->dev, &chip_idx); |
| 1448 | } else { |
| 1449 | return -ENODEV; |
| 1450 | } |
| 1451 | |
| 1452 | data->chip_info = <r501_chip_info_tbl[chip_idx]; |
| 1453 | |
| 1454 | if ((partid >> 4) != data->chip_info->partid) |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1455 | return -ENODEV; |
| 1456 | |
| 1457 | indio_dev->dev.parent = &client->dev; |
Daniel Baluta | 035ebb1 | 2015-04-21 19:11:00 +0300 | [diff] [blame] | 1458 | indio_dev->info = data->chip_info->info; |
| 1459 | indio_dev->channels = data->chip_info->channels; |
| 1460 | indio_dev->num_channels = data->chip_info->no_channels; |
Daniel Baluta | 8592a7e | 2015-04-21 19:10:59 +0300 | [diff] [blame] | 1461 | indio_dev->name = name; |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1462 | indio_dev->modes = INDIO_DIRECT_MODE; |
| 1463 | |
| 1464 | ret = ltr501_init(data); |
| 1465 | if (ret < 0) |
| 1466 | return ret; |
| 1467 | |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 1468 | if (client->irq > 0) { |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 1469 | ret = devm_request_threaded_irq(&client->dev, client->irq, |
| 1470 | NULL, ltr501_interrupt_handler, |
| 1471 | IRQF_TRIGGER_FALLING | |
| 1472 | IRQF_ONESHOT, |
| 1473 | "ltr501_thresh_event", |
| 1474 | indio_dev); |
| 1475 | if (ret) { |
| 1476 | dev_err(&client->dev, "request irq (%d) failed\n", |
| 1477 | client->irq); |
| 1478 | return ret; |
| 1479 | } |
| 1480 | } else { |
Daniel Baluta | 035ebb1 | 2015-04-21 19:11:00 +0300 | [diff] [blame] | 1481 | indio_dev->info = data->chip_info->info_no_irq; |
Kuppuswamy Sathyanarayanan | 7ac702b | 2015-04-19 02:10:02 -0700 | [diff] [blame] | 1482 | } |
| 1483 | |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1484 | ret = iio_triggered_buffer_setup(indio_dev, NULL, |
Daniel Baluta | abda2b4 | 2015-04-09 17:17:47 +0300 | [diff] [blame] | 1485 | ltr501_trigger_handler, NULL); |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1486 | if (ret) |
Cristina Opriceana | 1ca510b | 2015-04-01 18:50:17 +0300 | [diff] [blame] | 1487 | goto powerdown_on_error; |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1488 | |
| 1489 | ret = iio_device_register(indio_dev); |
| 1490 | if (ret) |
| 1491 | goto error_unreg_buffer; |
| 1492 | |
| 1493 | return 0; |
| 1494 | |
| 1495 | error_unreg_buffer: |
| 1496 | iio_triggered_buffer_cleanup(indio_dev); |
Cristina Opriceana | 1ca510b | 2015-04-01 18:50:17 +0300 | [diff] [blame] | 1497 | powerdown_on_error: |
| 1498 | ltr501_powerdown(data); |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1499 | return ret; |
| 1500 | } |
| 1501 | |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1502 | static int ltr501_remove(struct i2c_client *client) |
| 1503 | { |
| 1504 | struct iio_dev *indio_dev = i2c_get_clientdata(client); |
| 1505 | |
| 1506 | iio_device_unregister(indio_dev); |
| 1507 | iio_triggered_buffer_cleanup(indio_dev); |
| 1508 | ltr501_powerdown(iio_priv(indio_dev)); |
| 1509 | |
| 1510 | return 0; |
| 1511 | } |
| 1512 | |
| 1513 | #ifdef CONFIG_PM_SLEEP |
| 1514 | static int ltr501_suspend(struct device *dev) |
| 1515 | { |
| 1516 | struct ltr501_data *data = iio_priv(i2c_get_clientdata( |
Daniel Baluta | abda2b4 | 2015-04-09 17:17:47 +0300 | [diff] [blame] | 1517 | to_i2c_client(dev))); |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1518 | return ltr501_powerdown(data); |
| 1519 | } |
| 1520 | |
| 1521 | static int ltr501_resume(struct device *dev) |
| 1522 | { |
| 1523 | struct ltr501_data *data = iio_priv(i2c_get_clientdata( |
Daniel Baluta | abda2b4 | 2015-04-09 17:17:47 +0300 | [diff] [blame] | 1524 | to_i2c_client(dev))); |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1525 | |
Kuppuswamy Sathyanarayanan | 2f2c963 | 2015-04-17 22:15:10 -0700 | [diff] [blame] | 1526 | return ltr501_write_contr(data, data->als_contr, |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1527 | data->ps_contr); |
| 1528 | } |
| 1529 | #endif |
| 1530 | |
| 1531 | static SIMPLE_DEV_PM_OPS(ltr501_pm_ops, ltr501_suspend, ltr501_resume); |
| 1532 | |
Kuppuswamy Sathyanarayanan | 772154d | 2015-04-19 02:10:04 -0700 | [diff] [blame] | 1533 | static const struct acpi_device_id ltr_acpi_match[] = { |
Daniel Baluta | 8592a7e | 2015-04-21 19:10:59 +0300 | [diff] [blame] | 1534 | {"LTER0501", ltr501}, |
| 1535 | {"LTER0559", ltr559}, |
Daniel Baluta | 035ebb1 | 2015-04-21 19:11:00 +0300 | [diff] [blame] | 1536 | {"LTER0301", ltr301}, |
Kuppuswamy Sathyanarayanan | 772154d | 2015-04-19 02:10:04 -0700 | [diff] [blame] | 1537 | { }, |
| 1538 | }; |
| 1539 | MODULE_DEVICE_TABLE(acpi, ltr_acpi_match); |
| 1540 | |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1541 | static const struct i2c_device_id ltr501_id[] = { |
Daniel Baluta | 8592a7e | 2015-04-21 19:10:59 +0300 | [diff] [blame] | 1542 | { "ltr501", ltr501}, |
| 1543 | { "ltr559", ltr559}, |
Daniel Baluta | 035ebb1 | 2015-04-21 19:11:00 +0300 | [diff] [blame] | 1544 | { "ltr301", ltr301}, |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1545 | { } |
| 1546 | }; |
| 1547 | MODULE_DEVICE_TABLE(i2c, ltr501_id); |
| 1548 | |
| 1549 | static struct i2c_driver ltr501_driver = { |
| 1550 | .driver = { |
| 1551 | .name = LTR501_DRV_NAME, |
| 1552 | .pm = <r501_pm_ops, |
Kuppuswamy Sathyanarayanan | 772154d | 2015-04-19 02:10:04 -0700 | [diff] [blame] | 1553 | .acpi_match_table = ACPI_PTR(ltr_acpi_match), |
Peter Meerwald | 2690be9 | 2014-10-01 22:01:00 +0100 | [diff] [blame] | 1554 | }, |
| 1555 | .probe = ltr501_probe, |
| 1556 | .remove = ltr501_remove, |
| 1557 | .id_table = ltr501_id, |
| 1558 | }; |
| 1559 | |
| 1560 | module_i2c_driver(ltr501_driver); |
| 1561 | |
| 1562 | MODULE_AUTHOR("Peter Meerwald <pmeerw@pmeerw.net>"); |
| 1563 | MODULE_DESCRIPTION("Lite-On LTR501 ambient light and proximity sensor driver"); |
| 1564 | MODULE_LICENSE("GPL"); |