Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Device driver for monitoring ambient light intensity in (lux) |
| 3 | * and proximity detection (prox) within the TAOS TSL2X7X family of devices. |
| 4 | * |
| 5 | * Copyright (c) 2012, TAOS Corporation. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, but WITHOUT |
| 13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 15 | * more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License along |
| 18 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 20 | */ |
| 21 | |
| 22 | #include <linux/kernel.h> |
| 23 | #include <linux/i2c.h> |
| 24 | #include <linux/errno.h> |
| 25 | #include <linux/delay.h> |
| 26 | #include <linux/mutex.h> |
| 27 | #include <linux/interrupt.h> |
| 28 | #include <linux/slab.h> |
| 29 | #include <linux/module.h> |
Jonathan Cameron | 06458e2 | 2012-04-25 15:54:58 +0100 | [diff] [blame] | 30 | #include <linux/iio/events.h> |
| 31 | #include <linux/iio/iio.h> |
| 32 | #include <linux/iio/sysfs.h> |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 33 | #include "tsl2x7x.h" |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 34 | |
| 35 | /* Cal defs*/ |
| 36 | #define PROX_STAT_CAL 0 |
| 37 | #define PROX_STAT_SAMP 1 |
| 38 | #define MAX_SAMPLES_CAL 200 |
| 39 | |
| 40 | /* TSL2X7X Device ID */ |
| 41 | #define TRITON_ID 0x00 |
| 42 | #define SWORDFISH_ID 0x30 |
| 43 | #define HALIBUT_ID 0x20 |
| 44 | |
| 45 | /* Lux calculation constants */ |
| 46 | #define TSL2X7X_LUX_CALC_OVER_FLOW 65535 |
| 47 | |
| 48 | /* TAOS Register definitions - note: |
| 49 | * depending on device, some of these register are not used and the |
| 50 | * register address is benign. |
| 51 | */ |
| 52 | /* 2X7X register offsets */ |
| 53 | #define TSL2X7X_MAX_CONFIG_REG 16 |
| 54 | |
| 55 | /* Device Registers and Masks */ |
| 56 | #define TSL2X7X_CNTRL 0x00 |
| 57 | #define TSL2X7X_ALS_TIME 0X01 |
| 58 | #define TSL2X7X_PRX_TIME 0x02 |
| 59 | #define TSL2X7X_WAIT_TIME 0x03 |
| 60 | #define TSL2X7X_ALS_MINTHRESHLO 0X04 |
| 61 | #define TSL2X7X_ALS_MINTHRESHHI 0X05 |
| 62 | #define TSL2X7X_ALS_MAXTHRESHLO 0X06 |
| 63 | #define TSL2X7X_ALS_MAXTHRESHHI 0X07 |
| 64 | #define TSL2X7X_PRX_MINTHRESHLO 0X08 |
| 65 | #define TSL2X7X_PRX_MINTHRESHHI 0X09 |
| 66 | #define TSL2X7X_PRX_MAXTHRESHLO 0X0A |
| 67 | #define TSL2X7X_PRX_MAXTHRESHHI 0X0B |
| 68 | #define TSL2X7X_PERSISTENCE 0x0C |
| 69 | #define TSL2X7X_PRX_CONFIG 0x0D |
| 70 | #define TSL2X7X_PRX_COUNT 0x0E |
| 71 | #define TSL2X7X_GAIN 0x0F |
| 72 | #define TSL2X7X_NOTUSED 0x10 |
| 73 | #define TSL2X7X_REVID 0x11 |
| 74 | #define TSL2X7X_CHIPID 0x12 |
| 75 | #define TSL2X7X_STATUS 0x13 |
| 76 | #define TSL2X7X_ALS_CHAN0LO 0x14 |
| 77 | #define TSL2X7X_ALS_CHAN0HI 0x15 |
| 78 | #define TSL2X7X_ALS_CHAN1LO 0x16 |
| 79 | #define TSL2X7X_ALS_CHAN1HI 0x17 |
| 80 | #define TSL2X7X_PRX_LO 0x18 |
| 81 | #define TSL2X7X_PRX_HI 0x19 |
| 82 | |
| 83 | /* tsl2X7X cmd reg masks */ |
| 84 | #define TSL2X7X_CMD_REG 0x80 |
| 85 | #define TSL2X7X_CMD_SPL_FN 0x60 |
| 86 | |
| 87 | #define TSL2X7X_CMD_PROX_INT_CLR 0X05 |
| 88 | #define TSL2X7X_CMD_ALS_INT_CLR 0x06 |
| 89 | #define TSL2X7X_CMD_PROXALS_INT_CLR 0X07 |
| 90 | |
| 91 | /* tsl2X7X cntrl reg masks */ |
| 92 | #define TSL2X7X_CNTL_ADC_ENBL 0x02 |
| 93 | #define TSL2X7X_CNTL_PWR_ON 0x01 |
| 94 | |
| 95 | /* tsl2X7X status reg masks */ |
| 96 | #define TSL2X7X_STA_ADC_VALID 0x01 |
| 97 | #define TSL2X7X_STA_PRX_VALID 0x02 |
| 98 | #define TSL2X7X_STA_ADC_PRX_VALID (TSL2X7X_STA_ADC_VALID |\ |
| 99 | TSL2X7X_STA_PRX_VALID) |
| 100 | #define TSL2X7X_STA_ALS_INTR 0x10 |
| 101 | #define TSL2X7X_STA_PRX_INTR 0x20 |
| 102 | |
| 103 | /* tsl2X7X cntrl reg masks */ |
| 104 | #define TSL2X7X_CNTL_REG_CLEAR 0x00 |
| 105 | #define TSL2X7X_CNTL_PROX_INT_ENBL 0X20 |
| 106 | #define TSL2X7X_CNTL_ALS_INT_ENBL 0X10 |
| 107 | #define TSL2X7X_CNTL_WAIT_TMR_ENBL 0X08 |
| 108 | #define TSL2X7X_CNTL_PROX_DET_ENBL 0X04 |
| 109 | #define TSL2X7X_CNTL_PWRON 0x01 |
| 110 | #define TSL2X7X_CNTL_ALSPON_ENBL 0x03 |
| 111 | #define TSL2X7X_CNTL_INTALSPON_ENBL 0x13 |
| 112 | #define TSL2X7X_CNTL_PROXPON_ENBL 0x0F |
| 113 | #define TSL2X7X_CNTL_INTPROXPON_ENBL 0x2F |
| 114 | |
| 115 | /*Prox diode to use */ |
| 116 | #define TSL2X7X_DIODE0 0x10 |
| 117 | #define TSL2X7X_DIODE1 0x20 |
| 118 | #define TSL2X7X_DIODE_BOTH 0x30 |
| 119 | |
| 120 | /* LED Power */ |
| 121 | #define TSL2X7X_mA100 0x00 |
| 122 | #define TSL2X7X_mA50 0x40 |
| 123 | #define TSL2X7X_mA25 0x80 |
| 124 | #define TSL2X7X_mA13 0xD0 |
| 125 | #define TSL2X7X_MAX_TIMER_CNT (0xFF) |
| 126 | |
| 127 | /*Common device IIO EventMask */ |
| 128 | #define TSL2X7X_EVENT_MASK \ |
| 129 | (IIO_EV_BIT(IIO_EV_TYPE_THRESH, IIO_EV_DIR_RISING) | \ |
| 130 | IIO_EV_BIT(IIO_EV_TYPE_THRESH, IIO_EV_DIR_FALLING)), |
| 131 | |
Jon Brenner | 0f3bcfe | 2012-04-24 17:59:10 -0500 | [diff] [blame] | 132 | #define TSL2X7X_MIN_ITIME 3 |
| 133 | |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 134 | /* TAOS txx2x7x Device family members */ |
| 135 | enum { |
| 136 | tsl2571, |
| 137 | tsl2671, |
| 138 | tmd2671, |
| 139 | tsl2771, |
| 140 | tmd2771, |
| 141 | tsl2572, |
| 142 | tsl2672, |
| 143 | tmd2672, |
| 144 | tsl2772, |
| 145 | tmd2772 |
| 146 | }; |
| 147 | |
| 148 | enum { |
| 149 | TSL2X7X_CHIP_UNKNOWN = 0, |
| 150 | TSL2X7X_CHIP_WORKING = 1, |
| 151 | TSL2X7X_CHIP_SUSPENDED = 2 |
| 152 | }; |
| 153 | |
| 154 | struct tsl2x7x_parse_result { |
| 155 | int integer; |
| 156 | int fract; |
| 157 | }; |
| 158 | |
| 159 | /* Per-device data */ |
| 160 | struct tsl2x7x_als_info { |
| 161 | u16 als_ch0; |
| 162 | u16 als_ch1; |
| 163 | u16 lux; |
| 164 | }; |
| 165 | |
| 166 | struct tsl2x7x_prox_stat { |
| 167 | int min; |
| 168 | int max; |
| 169 | int mean; |
| 170 | unsigned long stddev; |
| 171 | }; |
| 172 | |
| 173 | struct tsl2x7x_chip_info { |
| 174 | int chan_table_elements; |
| 175 | struct iio_chan_spec channel[4]; |
| 176 | const struct iio_info *info; |
| 177 | }; |
| 178 | |
| 179 | struct tsl2X7X_chip { |
| 180 | kernel_ulong_t id; |
| 181 | struct mutex prox_mutex; |
| 182 | struct mutex als_mutex; |
| 183 | struct i2c_client *client; |
| 184 | u16 prox_data; |
| 185 | struct tsl2x7x_als_info als_cur_info; |
| 186 | struct tsl2x7x_settings tsl2x7x_settings; |
| 187 | struct tsl2X7X_platform_data *pdata; |
| 188 | int als_time_scale; |
| 189 | int als_saturation; |
| 190 | int tsl2x7x_chip_status; |
| 191 | u8 tsl2x7x_config[TSL2X7X_MAX_CONFIG_REG]; |
| 192 | const struct tsl2x7x_chip_info *chip_info; |
| 193 | const struct iio_info *info; |
| 194 | s64 event_timestamp; |
| 195 | /* This structure is intentionally large to accommodate |
| 196 | * updates via sysfs. */ |
| 197 | /* Sized to 9 = max 8 segments + 1 termination segment */ |
| 198 | struct tsl2x7x_lux tsl2x7x_device_lux[TSL2X7X_MAX_LUX_TABLE_SIZE]; |
| 199 | }; |
| 200 | |
| 201 | /* Different devices require different coefficents */ |
| 202 | static const struct tsl2x7x_lux tsl2x71_lux_table[] = { |
| 203 | { 14461, 611, 1211 }, |
| 204 | { 18540, 352, 623 }, |
| 205 | { 0, 0, 0 }, |
| 206 | }; |
| 207 | |
| 208 | static const struct tsl2x7x_lux tmd2x71_lux_table[] = { |
| 209 | { 11635, 115, 256 }, |
| 210 | { 15536, 87, 179 }, |
| 211 | { 0, 0, 0 }, |
| 212 | }; |
| 213 | |
| 214 | static const struct tsl2x7x_lux tsl2x72_lux_table[] = { |
| 215 | { 14013, 466, 917 }, |
| 216 | { 18222, 310, 552 }, |
| 217 | { 0, 0, 0 }, |
| 218 | }; |
| 219 | |
| 220 | static const struct tsl2x7x_lux tmd2x72_lux_table[] = { |
| 221 | { 13218, 130, 262 }, |
| 222 | { 17592, 92, 169 }, |
| 223 | { 0, 0, 0 }, |
| 224 | }; |
| 225 | |
| 226 | static const struct tsl2x7x_lux *tsl2x7x_default_lux_table_group[] = { |
| 227 | [tsl2571] = tsl2x71_lux_table, |
| 228 | [tsl2671] = tsl2x71_lux_table, |
| 229 | [tmd2671] = tmd2x71_lux_table, |
| 230 | [tsl2771] = tsl2x71_lux_table, |
| 231 | [tmd2771] = tmd2x71_lux_table, |
| 232 | [tsl2572] = tsl2x72_lux_table, |
| 233 | [tsl2672] = tsl2x72_lux_table, |
| 234 | [tmd2672] = tmd2x72_lux_table, |
| 235 | [tsl2772] = tsl2x72_lux_table, |
| 236 | [tmd2772] = tmd2x72_lux_table, |
| 237 | }; |
| 238 | |
| 239 | static const struct tsl2x7x_settings tsl2x7x_default_settings = { |
| 240 | .als_time = 219, /* 101 ms */ |
| 241 | .als_gain = 0, |
| 242 | .prx_time = 254, /* 5.4 ms */ |
| 243 | .prox_gain = 1, |
| 244 | .wait_time = 245, |
| 245 | .prox_config = 0, |
| 246 | .als_gain_trim = 1000, |
| 247 | .als_cal_target = 150, |
| 248 | .als_thresh_low = 200, |
| 249 | .als_thresh_high = 256, |
| 250 | .persistence = 255, |
| 251 | .interrupts_en = 0, |
| 252 | .prox_thres_low = 0, |
| 253 | .prox_thres_high = 512, |
| 254 | .prox_max_samples_cal = 30, |
| 255 | .prox_pulse_count = 8 |
| 256 | }; |
| 257 | |
| 258 | static const s16 tsl2X7X_als_gainadj[] = { |
| 259 | 1, |
| 260 | 8, |
| 261 | 16, |
| 262 | 120 |
| 263 | }; |
| 264 | |
| 265 | static const s16 tsl2X7X_prx_gainadj[] = { |
| 266 | 1, |
| 267 | 2, |
| 268 | 4, |
| 269 | 8 |
| 270 | }; |
| 271 | |
| 272 | /* Channel variations */ |
| 273 | enum { |
| 274 | ALS, |
| 275 | PRX, |
| 276 | ALSPRX, |
| 277 | PRX2, |
| 278 | ALSPRX2, |
| 279 | }; |
| 280 | |
Jon Brenner | 0f3bcfe | 2012-04-24 17:59:10 -0500 | [diff] [blame] | 281 | static const u8 device_channel_config[] = { |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 282 | ALS, |
| 283 | PRX, |
| 284 | PRX, |
| 285 | ALSPRX, |
| 286 | ALSPRX, |
| 287 | ALS, |
| 288 | PRX2, |
| 289 | PRX2, |
| 290 | ALSPRX2, |
| 291 | ALSPRX2 |
| 292 | }; |
| 293 | |
| 294 | /** |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 295 | * tsl2x7x_i2c_read() - Read a byte from a register. |
| 296 | * @client: i2c client |
| 297 | * @reg: device register to read from |
| 298 | * @*val: pointer to location to store register contents. |
| 299 | * |
| 300 | */ |
| 301 | static int |
| 302 | tsl2x7x_i2c_read(struct i2c_client *client, u8 reg, u8 *val) |
| 303 | { |
| 304 | int ret = 0; |
| 305 | |
| 306 | /* select register to write */ |
| 307 | ret = i2c_smbus_write_byte(client, (TSL2X7X_CMD_REG | reg)); |
| 308 | if (ret < 0) { |
| 309 | dev_err(&client->dev, "%s: failed to write register %x\n" |
| 310 | , __func__, reg); |
| 311 | return ret; |
| 312 | } |
| 313 | |
| 314 | /* read the data */ |
| 315 | ret = i2c_smbus_read_byte(client); |
| 316 | if (ret >= 0) |
| 317 | *val = (u8)ret; |
| 318 | else |
| 319 | dev_err(&client->dev, "%s: failed to read register %x\n" |
| 320 | , __func__, reg); |
| 321 | |
| 322 | return ret; |
| 323 | } |
| 324 | |
| 325 | /** |
| 326 | * tsl2x7x_get_lux() - Reads and calculates current lux value. |
| 327 | * @indio_dev: pointer to IIO device |
| 328 | * |
| 329 | * The raw ch0 and ch1 values of the ambient light sensed in the last |
| 330 | * integration cycle are read from the device. |
| 331 | * Time scale factor array values are adjusted based on the integration time. |
| 332 | * The raw values are multiplied by a scale factor, and device gain is obtained |
| 333 | * using gain index. Limit checks are done next, then the ratio of a multiple |
| 334 | * of ch1 value, to the ch0 value, is calculated. Array tsl2x7x_device_lux[] |
| 335 | * is then scanned to find the first ratio value that is just above the ratio |
| 336 | * we just calculated. The ch0 and ch1 multiplier constants in the array are |
| 337 | * then used along with the time scale factor array values, to calculate the |
| 338 | * lux. |
| 339 | */ |
| 340 | static int tsl2x7x_get_lux(struct iio_dev *indio_dev) |
| 341 | { |
| 342 | u16 ch0, ch1; /* separated ch0/ch1 data from device */ |
| 343 | u32 lux; /* raw lux calculated from device data */ |
| 344 | u64 lux64; |
| 345 | u32 ratio; |
| 346 | u8 buf[4]; |
| 347 | struct tsl2x7x_lux *p; |
| 348 | struct tsl2X7X_chip *chip = iio_priv(indio_dev); |
| 349 | int i, ret; |
| 350 | u32 ch0lux = 0; |
| 351 | u32 ch1lux = 0; |
| 352 | |
| 353 | if (mutex_trylock(&chip->als_mutex) == 0) |
| 354 | return chip->als_cur_info.lux; /* busy, so return LAST VALUE */ |
| 355 | |
| 356 | if (chip->tsl2x7x_chip_status != TSL2X7X_CHIP_WORKING) { |
| 357 | /* device is not enabled */ |
| 358 | dev_err(&chip->client->dev, "%s: device is not enabled\n", |
| 359 | __func__); |
| 360 | ret = -EBUSY ; |
| 361 | goto out_unlock; |
| 362 | } |
| 363 | |
| 364 | ret = tsl2x7x_i2c_read(chip->client, |
| 365 | (TSL2X7X_CMD_REG | TSL2X7X_STATUS), &buf[0]); |
| 366 | if (ret < 0) { |
| 367 | dev_err(&chip->client->dev, |
| 368 | "%s: Failed to read STATUS Reg\n", __func__); |
| 369 | goto out_unlock; |
| 370 | } |
| 371 | /* is data new & valid */ |
| 372 | if (!(buf[0] & TSL2X7X_STA_ADC_VALID)) { |
| 373 | dev_err(&chip->client->dev, |
| 374 | "%s: data not valid yet\n", __func__); |
| 375 | ret = chip->als_cur_info.lux; /* return LAST VALUE */ |
| 376 | goto out_unlock; |
| 377 | } |
| 378 | |
| 379 | for (i = 0; i < 4; i++) { |
| 380 | ret = tsl2x7x_i2c_read(chip->client, |
| 381 | (TSL2X7X_CMD_REG | (TSL2X7X_ALS_CHAN0LO + i)), |
| 382 | &buf[i]); |
| 383 | if (ret < 0) { |
| 384 | dev_err(&chip->client->dev, |
| 385 | "%s: failed to read. err=%x\n", __func__, ret); |
| 386 | goto out_unlock; |
| 387 | } |
| 388 | } |
| 389 | |
| 390 | /* clear any existing interrupt status */ |
| 391 | ret = i2c_smbus_write_byte(chip->client, |
| 392 | (TSL2X7X_CMD_REG | |
| 393 | TSL2X7X_CMD_SPL_FN | |
| 394 | TSL2X7X_CMD_ALS_INT_CLR)); |
| 395 | if (ret < 0) { |
| 396 | dev_err(&chip->client->dev, |
| 397 | "%s: i2c_write_command failed - err = %d\n", |
| 398 | __func__, ret); |
| 399 | goto out_unlock; /* have no data, so return failure */ |
| 400 | } |
| 401 | |
| 402 | /* extract ALS/lux data */ |
| 403 | ch0 = le16_to_cpup((const __le16 *)&buf[0]); |
| 404 | ch1 = le16_to_cpup((const __le16 *)&buf[2]); |
| 405 | |
| 406 | chip->als_cur_info.als_ch0 = ch0; |
| 407 | chip->als_cur_info.als_ch1 = ch1; |
| 408 | |
| 409 | if ((ch0 >= chip->als_saturation) || (ch1 >= chip->als_saturation)) { |
| 410 | lux = TSL2X7X_LUX_CALC_OVER_FLOW; |
| 411 | goto return_max; |
| 412 | } |
| 413 | |
| 414 | if (ch0 == 0) { |
| 415 | /* have no data, so return LAST VALUE */ |
| 416 | ret = chip->als_cur_info.lux; |
| 417 | goto out_unlock; |
| 418 | } |
| 419 | /* calculate ratio */ |
| 420 | ratio = (ch1 << 15) / ch0; |
| 421 | /* convert to unscaled lux using the pointer to the table */ |
| 422 | p = (struct tsl2x7x_lux *) chip->tsl2x7x_device_lux; |
| 423 | while (p->ratio != 0 && p->ratio < ratio) |
| 424 | p++; |
| 425 | |
| 426 | if (p->ratio == 0) { |
| 427 | lux = 0; |
| 428 | } else { |
| 429 | ch0lux = DIV_ROUND_UP((ch0 * p->ch0), |
| 430 | tsl2X7X_als_gainadj[chip->tsl2x7x_settings.als_gain]); |
| 431 | ch1lux = DIV_ROUND_UP((ch1 * p->ch1), |
| 432 | tsl2X7X_als_gainadj[chip->tsl2x7x_settings.als_gain]); |
| 433 | lux = ch0lux - ch1lux; |
| 434 | } |
| 435 | |
| 436 | /* note: lux is 31 bit max at this point */ |
| 437 | if (ch1lux > ch0lux) { |
| 438 | dev_dbg(&chip->client->dev, "ch1lux > ch0lux-return last value\n"); |
| 439 | ret = chip->als_cur_info.lux; |
| 440 | goto out_unlock; |
| 441 | } |
| 442 | |
| 443 | /* adjust for active time scale */ |
| 444 | if (chip->als_time_scale == 0) |
| 445 | lux = 0; |
| 446 | else |
| 447 | lux = (lux + (chip->als_time_scale >> 1)) / |
| 448 | chip->als_time_scale; |
| 449 | |
| 450 | /* adjust for active gain scale |
| 451 | * The tsl2x7x_device_lux tables have a factor of 256 built-in. |
| 452 | * User-specified gain provides a multiplier. |
| 453 | * Apply user-specified gain before shifting right to retain precision. |
| 454 | * Use 64 bits to avoid overflow on multiplication. |
| 455 | * Then go back to 32 bits before division to avoid using div_u64(). |
| 456 | */ |
| 457 | |
| 458 | lux64 = lux; |
| 459 | lux64 = lux64 * chip->tsl2x7x_settings.als_gain_trim; |
| 460 | lux64 >>= 8; |
| 461 | lux = lux64; |
| 462 | lux = (lux + 500) / 1000; |
| 463 | |
| 464 | if (lux > TSL2X7X_LUX_CALC_OVER_FLOW) /* check for overflow */ |
| 465 | lux = TSL2X7X_LUX_CALC_OVER_FLOW; |
| 466 | |
| 467 | /* Update the structure with the latest lux. */ |
| 468 | return_max: |
| 469 | chip->als_cur_info.lux = lux; |
| 470 | ret = lux; |
| 471 | |
| 472 | out_unlock: |
| 473 | mutex_unlock(&chip->als_mutex); |
| 474 | |
| 475 | return ret; |
| 476 | } |
| 477 | |
| 478 | /** |
| 479 | * tsl2x7x_get_prox() - Reads proximity data registers and updates |
| 480 | * chip->prox_data. |
| 481 | * |
| 482 | * @indio_dev: pointer to IIO device |
| 483 | */ |
| 484 | static int tsl2x7x_get_prox(struct iio_dev *indio_dev) |
| 485 | { |
| 486 | int i; |
| 487 | int ret; |
| 488 | u8 status; |
| 489 | u8 chdata[2]; |
| 490 | struct tsl2X7X_chip *chip = iio_priv(indio_dev); |
| 491 | |
| 492 | if (mutex_trylock(&chip->prox_mutex) == 0) { |
| 493 | dev_err(&chip->client->dev, |
| 494 | "%s: Can't get prox mutex\n", __func__); |
| 495 | return -EBUSY; |
| 496 | } |
| 497 | |
| 498 | ret = tsl2x7x_i2c_read(chip->client, |
| 499 | (TSL2X7X_CMD_REG | TSL2X7X_STATUS), &status); |
| 500 | if (ret < 0) { |
| 501 | dev_err(&chip->client->dev, |
| 502 | "%s: i2c err=%d\n", __func__, ret); |
| 503 | goto prox_poll_err; |
| 504 | } |
| 505 | |
| 506 | switch (chip->id) { |
| 507 | case tsl2571: |
| 508 | case tsl2671: |
| 509 | case tmd2671: |
| 510 | case tsl2771: |
| 511 | case tmd2771: |
| 512 | if (!(status & TSL2X7X_STA_ADC_VALID)) |
| 513 | goto prox_poll_err; |
| 514 | break; |
| 515 | case tsl2572: |
| 516 | case tsl2672: |
| 517 | case tmd2672: |
| 518 | case tsl2772: |
| 519 | case tmd2772: |
| 520 | if (!(status & TSL2X7X_STA_PRX_VALID)) |
| 521 | goto prox_poll_err; |
| 522 | break; |
| 523 | } |
| 524 | |
| 525 | for (i = 0; i < 2; i++) { |
| 526 | ret = tsl2x7x_i2c_read(chip->client, |
| 527 | (TSL2X7X_CMD_REG | |
| 528 | (TSL2X7X_PRX_LO + i)), &chdata[i]); |
| 529 | if (ret < 0) |
| 530 | goto prox_poll_err; |
| 531 | } |
| 532 | |
| 533 | chip->prox_data = |
| 534 | le16_to_cpup((const __le16 *)&chdata[0]); |
| 535 | |
| 536 | prox_poll_err: |
| 537 | |
| 538 | mutex_unlock(&chip->prox_mutex); |
| 539 | |
| 540 | return chip->prox_data; |
| 541 | } |
| 542 | |
| 543 | /** |
| 544 | * tsl2x7x_defaults() - Populates the device nominal operating parameters |
| 545 | * with those provided by a 'platform' data struct or |
| 546 | * with prefined defaults. |
| 547 | * |
| 548 | * @chip: pointer to device structure. |
| 549 | */ |
| 550 | static void tsl2x7x_defaults(struct tsl2X7X_chip *chip) |
| 551 | { |
| 552 | /* If Operational settings defined elsewhere.. */ |
| 553 | if (chip->pdata && chip->pdata->platform_default_settings != 0) |
| 554 | memcpy(&(chip->tsl2x7x_settings), |
| 555 | chip->pdata->platform_default_settings, |
| 556 | sizeof(tsl2x7x_default_settings)); |
| 557 | else |
| 558 | memcpy(&(chip->tsl2x7x_settings), |
| 559 | &tsl2x7x_default_settings, |
| 560 | sizeof(tsl2x7x_default_settings)); |
| 561 | |
| 562 | /* Load up the proper lux table. */ |
| 563 | if (chip->pdata && chip->pdata->platform_lux_table[0].ratio != 0) |
| 564 | memcpy(chip->tsl2x7x_device_lux, |
| 565 | chip->pdata->platform_lux_table, |
| 566 | sizeof(chip->pdata->platform_lux_table)); |
| 567 | else |
| 568 | memcpy(chip->tsl2x7x_device_lux, |
| 569 | (struct tsl2x7x_lux *)tsl2x7x_default_lux_table_group[chip->id], |
| 570 | MAX_DEFAULT_TABLE_BYTES); |
| 571 | } |
| 572 | |
| 573 | /** |
| 574 | * tsl2x7x_als_calibrate() - Obtain single reading and calculate |
| 575 | * the als_gain_trim. |
| 576 | * |
| 577 | * @indio_dev: pointer to IIO device |
| 578 | */ |
| 579 | static int tsl2x7x_als_calibrate(struct iio_dev *indio_dev) |
| 580 | { |
| 581 | struct tsl2X7X_chip *chip = iio_priv(indio_dev); |
| 582 | u8 reg_val; |
| 583 | int gain_trim_val; |
| 584 | int ret; |
| 585 | int lux_val; |
| 586 | |
| 587 | ret = i2c_smbus_write_byte(chip->client, |
| 588 | (TSL2X7X_CMD_REG | TSL2X7X_CNTRL)); |
| 589 | if (ret < 0) { |
| 590 | dev_err(&chip->client->dev, |
| 591 | "%s: failed to write CNTRL register, ret=%d\n", |
| 592 | __func__, ret); |
| 593 | return ret; |
| 594 | } |
| 595 | |
| 596 | reg_val = i2c_smbus_read_byte(chip->client); |
| 597 | if ((reg_val & (TSL2X7X_CNTL_ADC_ENBL | TSL2X7X_CNTL_PWR_ON)) |
| 598 | != (TSL2X7X_CNTL_ADC_ENBL | TSL2X7X_CNTL_PWR_ON)) { |
| 599 | dev_err(&chip->client->dev, |
| 600 | "%s: failed: ADC not enabled\n", __func__); |
| 601 | return -1; |
| 602 | } |
| 603 | |
| 604 | ret = i2c_smbus_write_byte(chip->client, |
| 605 | (TSL2X7X_CMD_REG | TSL2X7X_CNTRL)); |
| 606 | if (ret < 0) { |
| 607 | dev_err(&chip->client->dev, |
| 608 | "%s: failed to write ctrl reg: ret=%d\n", |
| 609 | __func__, ret); |
| 610 | return ret; |
| 611 | } |
| 612 | |
| 613 | reg_val = i2c_smbus_read_byte(chip->client); |
| 614 | if ((reg_val & TSL2X7X_STA_ADC_VALID) != TSL2X7X_STA_ADC_VALID) { |
| 615 | dev_err(&chip->client->dev, |
| 616 | "%s: failed: STATUS - ADC not valid.\n", __func__); |
| 617 | return -ENODATA; |
| 618 | } |
| 619 | |
| 620 | lux_val = tsl2x7x_get_lux(indio_dev); |
| 621 | if (lux_val < 0) { |
| 622 | dev_err(&chip->client->dev, |
| 623 | "%s: failed to get lux\n", __func__); |
| 624 | return lux_val; |
| 625 | } |
| 626 | |
| 627 | gain_trim_val = (((chip->tsl2x7x_settings.als_cal_target) |
| 628 | * chip->tsl2x7x_settings.als_gain_trim) / lux_val); |
| 629 | if ((gain_trim_val < 250) || (gain_trim_val > 4000)) |
| 630 | return -ERANGE; |
| 631 | |
| 632 | chip->tsl2x7x_settings.als_gain_trim = gain_trim_val; |
| 633 | dev_info(&chip->client->dev, |
| 634 | "%s als_calibrate completed\n", chip->client->name); |
| 635 | |
| 636 | return (int) gain_trim_val; |
| 637 | } |
| 638 | |
| 639 | static int tsl2x7x_chip_on(struct iio_dev *indio_dev) |
| 640 | { |
| 641 | int i; |
| 642 | int ret = 0; |
| 643 | u8 *dev_reg; |
| 644 | u8 utmp; |
| 645 | int als_count; |
| 646 | int als_time; |
| 647 | struct tsl2X7X_chip *chip = iio_priv(indio_dev); |
| 648 | u8 reg_val = 0; |
| 649 | |
| 650 | if (chip->pdata && chip->pdata->power_on) |
| 651 | chip->pdata->power_on(indio_dev); |
| 652 | |
| 653 | /* Non calculated parameters */ |
| 654 | chip->tsl2x7x_config[TSL2X7X_PRX_TIME] = |
| 655 | chip->tsl2x7x_settings.prx_time; |
| 656 | chip->tsl2x7x_config[TSL2X7X_WAIT_TIME] = |
| 657 | chip->tsl2x7x_settings.wait_time; |
| 658 | chip->tsl2x7x_config[TSL2X7X_PRX_CONFIG] = |
| 659 | chip->tsl2x7x_settings.prox_config; |
| 660 | |
| 661 | chip->tsl2x7x_config[TSL2X7X_ALS_MINTHRESHLO] = |
| 662 | (chip->tsl2x7x_settings.als_thresh_low) & 0xFF; |
| 663 | chip->tsl2x7x_config[TSL2X7X_ALS_MINTHRESHHI] = |
| 664 | (chip->tsl2x7x_settings.als_thresh_low >> 8) & 0xFF; |
| 665 | chip->tsl2x7x_config[TSL2X7X_ALS_MAXTHRESHLO] = |
| 666 | (chip->tsl2x7x_settings.als_thresh_high) & 0xFF; |
| 667 | chip->tsl2x7x_config[TSL2X7X_ALS_MAXTHRESHHI] = |
| 668 | (chip->tsl2x7x_settings.als_thresh_high >> 8) & 0xFF; |
| 669 | chip->tsl2x7x_config[TSL2X7X_PERSISTENCE] = |
| 670 | chip->tsl2x7x_settings.persistence; |
| 671 | |
| 672 | chip->tsl2x7x_config[TSL2X7X_PRX_COUNT] = |
| 673 | chip->tsl2x7x_settings.prox_pulse_count; |
| 674 | chip->tsl2x7x_config[TSL2X7X_PRX_MINTHRESHLO] = |
| 675 | chip->tsl2x7x_settings.prox_thres_low; |
| 676 | chip->tsl2x7x_config[TSL2X7X_PRX_MAXTHRESHLO] = |
| 677 | chip->tsl2x7x_settings.prox_thres_high; |
| 678 | |
| 679 | /* and make sure we're not already on */ |
| 680 | if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_WORKING) { |
| 681 | /* if forcing a register update - turn off, then on */ |
| 682 | dev_info(&chip->client->dev, "device is already enabled\n"); |
| 683 | return -EINVAL; |
| 684 | } |
| 685 | |
Peter Meerwald | 0941b93 | 2012-06-18 20:33:06 +0200 | [diff] [blame] | 686 | /* determine als integration register */ |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 687 | als_count = (chip->tsl2x7x_settings.als_time * 100 + 135) / 270; |
| 688 | if (als_count == 0) |
| 689 | als_count = 1; /* ensure at least one cycle */ |
| 690 | |
| 691 | /* convert back to time (encompasses overrides) */ |
| 692 | als_time = (als_count * 27 + 5) / 10; |
| 693 | chip->tsl2x7x_config[TSL2X7X_ALS_TIME] = 256 - als_count; |
| 694 | |
| 695 | /* Set the gain based on tsl2x7x_settings struct */ |
| 696 | chip->tsl2x7x_config[TSL2X7X_GAIN] = |
| 697 | (chip->tsl2x7x_settings.als_gain | |
| 698 | (TSL2X7X_mA100 | TSL2X7X_DIODE1) |
| 699 | | ((chip->tsl2x7x_settings.prox_gain) << 2)); |
| 700 | |
| 701 | /* set chip struct re scaling and saturation */ |
| 702 | chip->als_saturation = als_count * 922; /* 90% of full scale */ |
| 703 | chip->als_time_scale = (als_time + 25) / 50; |
| 704 | |
| 705 | /* TSL2X7X Specific power-on / adc enable sequence |
| 706 | * Power on the device 1st. */ |
| 707 | utmp = TSL2X7X_CNTL_PWR_ON; |
| 708 | ret = i2c_smbus_write_byte_data(chip->client, |
| 709 | TSL2X7X_CMD_REG | TSL2X7X_CNTRL, utmp); |
| 710 | if (ret < 0) { |
| 711 | dev_err(&chip->client->dev, |
| 712 | "%s: failed on CNTRL reg.\n", __func__); |
| 713 | return ret; |
| 714 | } |
| 715 | |
| 716 | /* Use the following shadow copy for our delay before enabling ADC. |
| 717 | * Write all the registers. */ |
| 718 | for (i = 0, dev_reg = chip->tsl2x7x_config; |
| 719 | i < TSL2X7X_MAX_CONFIG_REG; i++) { |
| 720 | ret = i2c_smbus_write_byte_data(chip->client, |
| 721 | TSL2X7X_CMD_REG + i, *dev_reg++); |
| 722 | if (ret < 0) { |
| 723 | dev_err(&chip->client->dev, |
| 724 | "%s: failed on write to reg %d.\n", __func__, i); |
| 725 | return ret; |
| 726 | } |
| 727 | } |
| 728 | |
Jon Brenner | 0f3bcfe | 2012-04-24 17:59:10 -0500 | [diff] [blame] | 729 | mdelay(3); /* Power-on settling time */ |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 730 | |
| 731 | /* NOW enable the ADC |
| 732 | * initialize the desired mode of operation */ |
| 733 | utmp = TSL2X7X_CNTL_PWR_ON | |
| 734 | TSL2X7X_CNTL_ADC_ENBL | |
| 735 | TSL2X7X_CNTL_PROX_DET_ENBL; |
| 736 | ret = i2c_smbus_write_byte_data(chip->client, |
| 737 | TSL2X7X_CMD_REG | TSL2X7X_CNTRL, utmp); |
| 738 | if (ret < 0) { |
| 739 | dev_err(&chip->client->dev, |
| 740 | "%s: failed on 2nd CTRL reg.\n", __func__); |
| 741 | return ret; |
| 742 | } |
| 743 | |
| 744 | chip->tsl2x7x_chip_status = TSL2X7X_CHIP_WORKING; |
| 745 | |
| 746 | if (chip->tsl2x7x_settings.interrupts_en != 0) { |
| 747 | dev_info(&chip->client->dev, "Setting Up Interrupt(s)\n"); |
| 748 | |
| 749 | reg_val = TSL2X7X_CNTL_PWR_ON | TSL2X7X_CNTL_ADC_ENBL; |
| 750 | if ((chip->tsl2x7x_settings.interrupts_en == 0x20) || |
| 751 | (chip->tsl2x7x_settings.interrupts_en == 0x30)) |
| 752 | reg_val |= TSL2X7X_CNTL_PROX_DET_ENBL; |
| 753 | |
| 754 | reg_val |= chip->tsl2x7x_settings.interrupts_en; |
| 755 | ret = i2c_smbus_write_byte_data(chip->client, |
| 756 | (TSL2X7X_CMD_REG | TSL2X7X_CNTRL), reg_val); |
| 757 | if (ret < 0) |
| 758 | dev_err(&chip->client->dev, |
| 759 | "%s: failed in tsl2x7x_IOCTL_INT_SET.\n", |
| 760 | __func__); |
| 761 | |
| 762 | /* Clear out any initial interrupts */ |
| 763 | ret = i2c_smbus_write_byte(chip->client, |
| 764 | TSL2X7X_CMD_REG | TSL2X7X_CMD_SPL_FN | |
| 765 | TSL2X7X_CMD_PROXALS_INT_CLR); |
| 766 | if (ret < 0) { |
| 767 | dev_err(&chip->client->dev, |
| 768 | "%s: Failed to clear Int status\n", |
| 769 | __func__); |
| 770 | return ret; |
| 771 | } |
| 772 | } |
| 773 | |
| 774 | return ret; |
| 775 | } |
| 776 | |
| 777 | static int tsl2x7x_chip_off(struct iio_dev *indio_dev) |
| 778 | { |
| 779 | int ret; |
| 780 | struct tsl2X7X_chip *chip = iio_priv(indio_dev); |
| 781 | |
| 782 | /* turn device off */ |
| 783 | chip->tsl2x7x_chip_status = TSL2X7X_CHIP_SUSPENDED; |
| 784 | |
| 785 | ret = i2c_smbus_write_byte_data(chip->client, |
| 786 | TSL2X7X_CMD_REG | TSL2X7X_CNTRL, 0x00); |
| 787 | |
| 788 | if (chip->pdata && chip->pdata->power_off) |
| 789 | chip->pdata->power_off(chip->client); |
| 790 | |
| 791 | return ret; |
| 792 | } |
| 793 | |
| 794 | /** |
| 795 | * tsl2x7x_invoke_change |
| 796 | * @indio_dev: pointer to IIO device |
| 797 | * |
| 798 | * Obtain and lock both ALS and PROX resources, |
| 799 | * determine and save device state (On/Off), |
| 800 | * cycle device to implement updated parameter, |
| 801 | * put device back into proper state, and unlock |
| 802 | * resource. |
| 803 | */ |
Jon Brenner | 0f3bcfe | 2012-04-24 17:59:10 -0500 | [diff] [blame] | 804 | static |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 805 | int tsl2x7x_invoke_change(struct iio_dev *indio_dev) |
| 806 | { |
| 807 | struct tsl2X7X_chip *chip = iio_priv(indio_dev); |
| 808 | int device_status = chip->tsl2x7x_chip_status; |
| 809 | |
| 810 | mutex_lock(&chip->als_mutex); |
| 811 | mutex_lock(&chip->prox_mutex); |
| 812 | |
| 813 | if (device_status == TSL2X7X_CHIP_WORKING) |
| 814 | tsl2x7x_chip_off(indio_dev); |
| 815 | |
| 816 | tsl2x7x_chip_on(indio_dev); |
| 817 | |
| 818 | if (device_status != TSL2X7X_CHIP_WORKING) |
| 819 | tsl2x7x_chip_off(indio_dev); |
| 820 | |
| 821 | mutex_unlock(&chip->prox_mutex); |
| 822 | mutex_unlock(&chip->als_mutex); |
| 823 | |
| 824 | return 0; |
| 825 | } |
| 826 | |
| 827 | static |
| 828 | void tsl2x7x_prox_calculate(int *data, int length, |
| 829 | struct tsl2x7x_prox_stat *statP) |
| 830 | { |
| 831 | int i; |
| 832 | int sample_sum; |
| 833 | int tmp; |
| 834 | |
| 835 | if (length == 0) |
| 836 | length = 1; |
| 837 | |
| 838 | sample_sum = 0; |
| 839 | statP->min = INT_MAX; |
| 840 | statP->max = INT_MIN; |
| 841 | for (i = 0; i < length; i++) { |
| 842 | sample_sum += data[i]; |
| 843 | statP->min = min(statP->min, data[i]); |
| 844 | statP->max = max(statP->max, data[i]); |
| 845 | } |
| 846 | |
| 847 | statP->mean = sample_sum / length; |
| 848 | sample_sum = 0; |
| 849 | for (i = 0; i < length; i++) { |
| 850 | tmp = data[i] - statP->mean; |
| 851 | sample_sum += tmp * tmp; |
| 852 | } |
| 853 | statP->stddev = int_sqrt((long)sample_sum)/length; |
| 854 | } |
| 855 | |
| 856 | /** |
| 857 | * tsl2x7x_prox_cal() - Calculates std. and sets thresholds. |
| 858 | * @indio_dev: pointer to IIO device |
| 859 | * |
| 860 | * Calculates a standard deviation based on the samples, |
| 861 | * and sets the threshold accordingly. |
| 862 | */ |
| 863 | static void tsl2x7x_prox_cal(struct iio_dev *indio_dev) |
| 864 | { |
| 865 | int prox_history[MAX_SAMPLES_CAL + 1]; |
| 866 | int i; |
| 867 | struct tsl2x7x_prox_stat prox_stat_data[2]; |
| 868 | struct tsl2x7x_prox_stat *calP; |
| 869 | struct tsl2X7X_chip *chip = iio_priv(indio_dev); |
| 870 | u8 tmp_irq_settings; |
| 871 | u8 current_state = chip->tsl2x7x_chip_status; |
| 872 | |
| 873 | if (chip->tsl2x7x_settings.prox_max_samples_cal > MAX_SAMPLES_CAL) { |
| 874 | dev_err(&chip->client->dev, |
| 875 | "%s: max prox samples cal is too big: %d\n", |
| 876 | __func__, chip->tsl2x7x_settings.prox_max_samples_cal); |
| 877 | chip->tsl2x7x_settings.prox_max_samples_cal = MAX_SAMPLES_CAL; |
| 878 | } |
| 879 | |
| 880 | /* have to stop to change settings */ |
| 881 | tsl2x7x_chip_off(indio_dev); |
| 882 | |
| 883 | /* Enable proximity detection save just in case prox not wanted yet*/ |
| 884 | tmp_irq_settings = chip->tsl2x7x_settings.interrupts_en; |
| 885 | chip->tsl2x7x_settings.interrupts_en |= TSL2X7X_CNTL_PROX_INT_ENBL; |
| 886 | |
| 887 | /*turn on device if not already on*/ |
| 888 | tsl2x7x_chip_on(indio_dev); |
| 889 | |
| 890 | /*gather the samples*/ |
| 891 | for (i = 0; i < chip->tsl2x7x_settings.prox_max_samples_cal; i++) { |
| 892 | mdelay(15); |
| 893 | tsl2x7x_get_prox(indio_dev); |
| 894 | prox_history[i] = chip->prox_data; |
| 895 | dev_info(&chip->client->dev, "2 i=%d prox data= %d\n", |
| 896 | i, chip->prox_data); |
| 897 | } |
| 898 | |
| 899 | tsl2x7x_chip_off(indio_dev); |
| 900 | calP = &prox_stat_data[PROX_STAT_CAL]; |
| 901 | tsl2x7x_prox_calculate(prox_history, |
| 902 | chip->tsl2x7x_settings.prox_max_samples_cal, calP); |
| 903 | chip->tsl2x7x_settings.prox_thres_high = (calP->max << 1) - calP->mean; |
| 904 | |
| 905 | dev_info(&chip->client->dev, " cal min=%d mean=%d max=%d\n", |
| 906 | calP->min, calP->mean, calP->max); |
| 907 | dev_info(&chip->client->dev, |
| 908 | "%s proximity threshold set to %d\n", |
| 909 | chip->client->name, chip->tsl2x7x_settings.prox_thres_high); |
| 910 | |
| 911 | /* back to the way they were */ |
| 912 | chip->tsl2x7x_settings.interrupts_en = tmp_irq_settings; |
| 913 | if (current_state == TSL2X7X_CHIP_WORKING) |
| 914 | tsl2x7x_chip_on(indio_dev); |
| 915 | } |
| 916 | |
| 917 | static ssize_t tsl2x7x_power_state_show(struct device *dev, |
| 918 | struct device_attribute *attr, char *buf) |
| 919 | { |
Lars-Peter Clausen | 96f691f | 2012-05-12 15:39:51 +0200 | [diff] [blame] | 920 | struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev)); |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 921 | |
| 922 | return snprintf(buf, PAGE_SIZE, "%d\n", chip->tsl2x7x_chip_status); |
| 923 | } |
| 924 | |
| 925 | static ssize_t tsl2x7x_power_state_store(struct device *dev, |
| 926 | struct device_attribute *attr, const char *buf, size_t len) |
| 927 | { |
Lars-Peter Clausen | 96f691f | 2012-05-12 15:39:51 +0200 | [diff] [blame] | 928 | struct iio_dev *indio_dev = dev_to_iio_dev(dev); |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 929 | bool value; |
| 930 | |
| 931 | if (strtobool(buf, &value)) |
| 932 | return -EINVAL; |
| 933 | |
| 934 | if (value) |
| 935 | tsl2x7x_chip_on(indio_dev); |
| 936 | else |
| 937 | tsl2x7x_chip_off(indio_dev); |
| 938 | |
| 939 | return len; |
| 940 | } |
| 941 | |
| 942 | static ssize_t tsl2x7x_gain_available_show(struct device *dev, |
| 943 | struct device_attribute *attr, char *buf) |
| 944 | { |
Lars-Peter Clausen | 96f691f | 2012-05-12 15:39:51 +0200 | [diff] [blame] | 945 | struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev)); |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 946 | |
| 947 | switch (chip->id) { |
| 948 | case tsl2571: |
| 949 | case tsl2671: |
| 950 | case tmd2671: |
| 951 | case tsl2771: |
| 952 | case tmd2771: |
| 953 | return snprintf(buf, PAGE_SIZE, "%s\n", "1 8 16 128"); |
| 954 | break; |
| 955 | } |
| 956 | |
| 957 | return snprintf(buf, PAGE_SIZE, "%s\n", "1 8 16 120"); |
| 958 | } |
| 959 | |
| 960 | static ssize_t tsl2x7x_prox_gain_available_show(struct device *dev, |
| 961 | struct device_attribute *attr, char *buf) |
| 962 | { |
| 963 | return snprintf(buf, PAGE_SIZE, "%s\n", "1 2 4 8"); |
| 964 | } |
| 965 | |
| 966 | static ssize_t tsl2x7x_als_time_show(struct device *dev, |
| 967 | struct device_attribute *attr, char *buf) |
| 968 | { |
Lars-Peter Clausen | 96f691f | 2012-05-12 15:39:51 +0200 | [diff] [blame] | 969 | struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev)); |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 970 | int y, z; |
| 971 | |
| 972 | y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1; |
Jon Brenner | 0f3bcfe | 2012-04-24 17:59:10 -0500 | [diff] [blame] | 973 | z = y * TSL2X7X_MIN_ITIME; |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 974 | y /= 1000; |
| 975 | z %= 1000; |
| 976 | |
| 977 | return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z); |
| 978 | } |
| 979 | |
| 980 | static ssize_t tsl2x7x_als_time_store(struct device *dev, |
| 981 | struct device_attribute *attr, const char *buf, size_t len) |
| 982 | { |
Lars-Peter Clausen | 96f691f | 2012-05-12 15:39:51 +0200 | [diff] [blame] | 983 | struct iio_dev *indio_dev = dev_to_iio_dev(dev); |
| 984 | struct tsl2X7X_chip *chip = iio_priv(indio_dev); |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 985 | struct tsl2x7x_parse_result result; |
Lars-Peter Clausen | 3f6a0ba | 2013-01-10 16:18:00 +0000 | [diff] [blame] | 986 | int ret; |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 987 | |
Lars-Peter Clausen | 3f6a0ba | 2013-01-10 16:18:00 +0000 | [diff] [blame] | 988 | ret = iio_str_to_fixpoint(buf, 100, &result.integer, &result.fract); |
| 989 | if (ret) |
| 990 | return ret; |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 991 | |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 992 | result.fract /= 3; |
| 993 | chip->tsl2x7x_settings.als_time = |
| 994 | (TSL2X7X_MAX_TIMER_CNT - (u8)result.fract); |
| 995 | |
| 996 | dev_info(&chip->client->dev, "%s: als time = %d", |
| 997 | __func__, chip->tsl2x7x_settings.als_time); |
| 998 | |
| 999 | tsl2x7x_invoke_change(indio_dev); |
| 1000 | |
| 1001 | return IIO_VAL_INT_PLUS_MICRO; |
| 1002 | } |
| 1003 | |
| 1004 | static IIO_CONST_ATTR(in_illuminance0_integration_time_available, |
| 1005 | ".00272 - .696"); |
| 1006 | |
| 1007 | static ssize_t tsl2x7x_als_cal_target_show(struct device *dev, |
| 1008 | struct device_attribute *attr, char *buf) |
| 1009 | { |
Lars-Peter Clausen | 96f691f | 2012-05-12 15:39:51 +0200 | [diff] [blame] | 1010 | struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev)); |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1011 | |
| 1012 | return snprintf(buf, PAGE_SIZE, "%d\n", |
| 1013 | chip->tsl2x7x_settings.als_cal_target); |
| 1014 | } |
| 1015 | |
| 1016 | static ssize_t tsl2x7x_als_cal_target_store(struct device *dev, |
| 1017 | struct device_attribute *attr, const char *buf, size_t len) |
| 1018 | { |
Lars-Peter Clausen | 96f691f | 2012-05-12 15:39:51 +0200 | [diff] [blame] | 1019 | struct iio_dev *indio_dev = dev_to_iio_dev(dev); |
| 1020 | struct tsl2X7X_chip *chip = iio_priv(indio_dev); |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1021 | unsigned long value; |
| 1022 | |
| 1023 | if (kstrtoul(buf, 0, &value)) |
| 1024 | return -EINVAL; |
| 1025 | |
| 1026 | if (value) |
| 1027 | chip->tsl2x7x_settings.als_cal_target = value; |
| 1028 | |
| 1029 | tsl2x7x_invoke_change(indio_dev); |
| 1030 | |
| 1031 | return len; |
| 1032 | } |
| 1033 | |
| 1034 | /* persistence settings */ |
| 1035 | static ssize_t tsl2x7x_als_persistence_show(struct device *dev, |
| 1036 | struct device_attribute *attr, char *buf) |
| 1037 | { |
Lars-Peter Clausen | 96f691f | 2012-05-12 15:39:51 +0200 | [diff] [blame] | 1038 | struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev)); |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1039 | int y, z, filter_delay; |
| 1040 | |
| 1041 | /* Determine integration time */ |
| 1042 | y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1; |
Jon Brenner | 0f3bcfe | 2012-04-24 17:59:10 -0500 | [diff] [blame] | 1043 | z = y * TSL2X7X_MIN_ITIME; |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1044 | filter_delay = z * (chip->tsl2x7x_settings.persistence & 0x0F); |
| 1045 | y = (filter_delay / 1000); |
| 1046 | z = (filter_delay % 1000); |
| 1047 | |
| 1048 | return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z); |
| 1049 | } |
| 1050 | |
| 1051 | static ssize_t tsl2x7x_als_persistence_store(struct device *dev, |
| 1052 | struct device_attribute *attr, const char *buf, size_t len) |
| 1053 | { |
Lars-Peter Clausen | 96f691f | 2012-05-12 15:39:51 +0200 | [diff] [blame] | 1054 | struct iio_dev *indio_dev = dev_to_iio_dev(dev); |
| 1055 | struct tsl2X7X_chip *chip = iio_priv(indio_dev); |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1056 | struct tsl2x7x_parse_result result; |
| 1057 | int y, z, filter_delay; |
Lars-Peter Clausen | 3f6a0ba | 2013-01-10 16:18:00 +0000 | [diff] [blame] | 1058 | int ret; |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1059 | |
Lars-Peter Clausen | 3f6a0ba | 2013-01-10 16:18:00 +0000 | [diff] [blame] | 1060 | ret = iio_str_to_fixpoint(buf, 100, &result.integer, &result.fract); |
| 1061 | if (ret) |
| 1062 | return ret; |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1063 | |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1064 | y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1; |
Jon Brenner | 0f3bcfe | 2012-04-24 17:59:10 -0500 | [diff] [blame] | 1065 | z = y * TSL2X7X_MIN_ITIME; |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1066 | |
| 1067 | filter_delay = |
| 1068 | DIV_ROUND_UP(((result.integer * 1000) + result.fract), z); |
| 1069 | |
| 1070 | chip->tsl2x7x_settings.persistence &= 0xF0; |
| 1071 | chip->tsl2x7x_settings.persistence |= (filter_delay & 0x0F); |
| 1072 | |
| 1073 | dev_info(&chip->client->dev, "%s: als persistence = %d", |
| 1074 | __func__, filter_delay); |
| 1075 | |
| 1076 | tsl2x7x_invoke_change(indio_dev); |
| 1077 | |
| 1078 | return IIO_VAL_INT_PLUS_MICRO; |
| 1079 | } |
| 1080 | |
| 1081 | static ssize_t tsl2x7x_prox_persistence_show(struct device *dev, |
| 1082 | struct device_attribute *attr, char *buf) |
| 1083 | { |
Lars-Peter Clausen | 96f691f | 2012-05-12 15:39:51 +0200 | [diff] [blame] | 1084 | struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev)); |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1085 | int y, z, filter_delay; |
| 1086 | |
| 1087 | /* Determine integration time */ |
| 1088 | y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.prx_time) + 1; |
Jon Brenner | 0f3bcfe | 2012-04-24 17:59:10 -0500 | [diff] [blame] | 1089 | z = y * TSL2X7X_MIN_ITIME; |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1090 | filter_delay = z * ((chip->tsl2x7x_settings.persistence & 0xF0) >> 4); |
| 1091 | y = (filter_delay / 1000); |
| 1092 | z = (filter_delay % 1000); |
| 1093 | |
| 1094 | return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z); |
| 1095 | } |
| 1096 | |
| 1097 | static ssize_t tsl2x7x_prox_persistence_store(struct device *dev, |
| 1098 | struct device_attribute *attr, const char *buf, size_t len) |
| 1099 | { |
Lars-Peter Clausen | 96f691f | 2012-05-12 15:39:51 +0200 | [diff] [blame] | 1100 | struct iio_dev *indio_dev = dev_to_iio_dev(dev); |
| 1101 | struct tsl2X7X_chip *chip = iio_priv(indio_dev); |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1102 | struct tsl2x7x_parse_result result; |
| 1103 | int y, z, filter_delay; |
Lars-Peter Clausen | 3f6a0ba | 2013-01-10 16:18:00 +0000 | [diff] [blame] | 1104 | int ret; |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1105 | |
Lars-Peter Clausen | 3f6a0ba | 2013-01-10 16:18:00 +0000 | [diff] [blame] | 1106 | ret = iio_str_to_fixpoint(buf, 100, &result.integer, &result.fract); |
| 1107 | if (ret) |
| 1108 | return ret; |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1109 | |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1110 | y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.prx_time) + 1; |
Jon Brenner | 0f3bcfe | 2012-04-24 17:59:10 -0500 | [diff] [blame] | 1111 | z = y * TSL2X7X_MIN_ITIME; |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1112 | |
| 1113 | filter_delay = |
| 1114 | DIV_ROUND_UP(((result.integer * 1000) + result.fract), z); |
| 1115 | |
| 1116 | chip->tsl2x7x_settings.persistence &= 0x0F; |
| 1117 | chip->tsl2x7x_settings.persistence |= ((filter_delay << 4) & 0xF0); |
| 1118 | |
| 1119 | dev_info(&chip->client->dev, "%s: prox persistence = %d", |
| 1120 | __func__, filter_delay); |
| 1121 | |
| 1122 | tsl2x7x_invoke_change(indio_dev); |
| 1123 | |
| 1124 | return IIO_VAL_INT_PLUS_MICRO; |
| 1125 | } |
| 1126 | |
| 1127 | static ssize_t tsl2x7x_do_calibrate(struct device *dev, |
| 1128 | struct device_attribute *attr, const char *buf, size_t len) |
| 1129 | { |
Lars-Peter Clausen | 96f691f | 2012-05-12 15:39:51 +0200 | [diff] [blame] | 1130 | struct iio_dev *indio_dev = dev_to_iio_dev(dev); |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1131 | bool value; |
| 1132 | |
| 1133 | if (strtobool(buf, &value)) |
| 1134 | return -EINVAL; |
| 1135 | |
| 1136 | if (value) |
| 1137 | tsl2x7x_als_calibrate(indio_dev); |
| 1138 | |
| 1139 | tsl2x7x_invoke_change(indio_dev); |
| 1140 | |
| 1141 | return len; |
| 1142 | } |
| 1143 | |
| 1144 | static ssize_t tsl2x7x_luxtable_show(struct device *dev, |
| 1145 | struct device_attribute *attr, char *buf) |
| 1146 | { |
Lars-Peter Clausen | 96f691f | 2012-05-12 15:39:51 +0200 | [diff] [blame] | 1147 | struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev)); |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1148 | int i = 0; |
| 1149 | int offset = 0; |
| 1150 | |
| 1151 | while (i < (TSL2X7X_MAX_LUX_TABLE_SIZE * 3)) { |
| 1152 | offset += snprintf(buf + offset, PAGE_SIZE, "%d,%d,%d,", |
| 1153 | chip->tsl2x7x_device_lux[i].ratio, |
| 1154 | chip->tsl2x7x_device_lux[i].ch0, |
| 1155 | chip->tsl2x7x_device_lux[i].ch1); |
| 1156 | if (chip->tsl2x7x_device_lux[i].ratio == 0) { |
| 1157 | /* We just printed the first "0" entry. |
| 1158 | * Now get rid of the extra "," and break. */ |
| 1159 | offset--; |
| 1160 | break; |
| 1161 | } |
| 1162 | i++; |
| 1163 | } |
| 1164 | |
| 1165 | offset += snprintf(buf + offset, PAGE_SIZE, "\n"); |
| 1166 | return offset; |
| 1167 | } |
| 1168 | |
| 1169 | static ssize_t tsl2x7x_luxtable_store(struct device *dev, |
| 1170 | struct device_attribute *attr, const char *buf, size_t len) |
| 1171 | { |
Lars-Peter Clausen | 96f691f | 2012-05-12 15:39:51 +0200 | [diff] [blame] | 1172 | struct iio_dev *indio_dev = dev_to_iio_dev(dev); |
| 1173 | struct tsl2X7X_chip *chip = iio_priv(indio_dev); |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1174 | int value[ARRAY_SIZE(chip->tsl2x7x_device_lux)*3 + 1]; |
| 1175 | int n; |
| 1176 | |
| 1177 | get_options(buf, ARRAY_SIZE(value), value); |
| 1178 | |
| 1179 | /* We now have an array of ints starting at value[1], and |
| 1180 | * enumerated by value[0]. |
| 1181 | * We expect each group of three ints is one table entry, |
| 1182 | * and the last table entry is all 0. |
| 1183 | */ |
| 1184 | n = value[0]; |
| 1185 | if ((n % 3) || n < 6 || |
| 1186 | n > ((ARRAY_SIZE(chip->tsl2x7x_device_lux) - 1) * 3)) { |
| 1187 | dev_info(dev, "LUX TABLE INPUT ERROR 1 Value[0]=%d\n", n); |
| 1188 | return -EINVAL; |
| 1189 | } |
| 1190 | |
| 1191 | if ((value[(n - 2)] | value[(n - 1)] | value[n]) != 0) { |
| 1192 | dev_info(dev, "LUX TABLE INPUT ERROR 2 Value[0]=%d\n", n); |
| 1193 | return -EINVAL; |
| 1194 | } |
| 1195 | |
| 1196 | if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_WORKING) |
| 1197 | tsl2x7x_chip_off(indio_dev); |
| 1198 | |
| 1199 | /* Zero out the table */ |
| 1200 | memset(chip->tsl2x7x_device_lux, 0, sizeof(chip->tsl2x7x_device_lux)); |
| 1201 | memcpy(chip->tsl2x7x_device_lux, &value[1], (value[0] * 4)); |
| 1202 | |
| 1203 | tsl2x7x_invoke_change(indio_dev); |
| 1204 | |
| 1205 | return len; |
| 1206 | } |
| 1207 | |
| 1208 | static ssize_t tsl2x7x_do_prox_calibrate(struct device *dev, |
| 1209 | struct device_attribute *attr, const char *buf, size_t len) |
| 1210 | { |
Lars-Peter Clausen | 96f691f | 2012-05-12 15:39:51 +0200 | [diff] [blame] | 1211 | struct iio_dev *indio_dev = dev_to_iio_dev(dev); |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1212 | bool value; |
| 1213 | |
| 1214 | if (strtobool(buf, &value)) |
| 1215 | return -EINVAL; |
| 1216 | |
| 1217 | if (value) |
| 1218 | tsl2x7x_prox_cal(indio_dev); |
| 1219 | |
| 1220 | tsl2x7x_invoke_change(indio_dev); |
| 1221 | |
| 1222 | return len; |
| 1223 | } |
| 1224 | |
| 1225 | static int tsl2x7x_read_interrupt_config(struct iio_dev *indio_dev, |
| 1226 | u64 event_code) |
| 1227 | { |
| 1228 | struct tsl2X7X_chip *chip = iio_priv(indio_dev); |
| 1229 | int ret; |
| 1230 | |
| 1231 | if (IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(event_code) == IIO_INTENSITY) |
| 1232 | ret = !!(chip->tsl2x7x_settings.interrupts_en & 0x10); |
| 1233 | else |
| 1234 | ret = !!(chip->tsl2x7x_settings.interrupts_en & 0x20); |
| 1235 | |
| 1236 | return ret; |
| 1237 | } |
| 1238 | |
| 1239 | static int tsl2x7x_write_interrupt_config(struct iio_dev *indio_dev, |
| 1240 | u64 event_code, |
| 1241 | int val) |
| 1242 | { |
| 1243 | struct tsl2X7X_chip *chip = iio_priv(indio_dev); |
| 1244 | |
| 1245 | if (IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(event_code) == IIO_INTENSITY) { |
| 1246 | if (val) |
| 1247 | chip->tsl2x7x_settings.interrupts_en |= 0x10; |
| 1248 | else |
| 1249 | chip->tsl2x7x_settings.interrupts_en &= 0x20; |
| 1250 | } else { |
| 1251 | if (val) |
| 1252 | chip->tsl2x7x_settings.interrupts_en |= 0x20; |
| 1253 | else |
| 1254 | chip->tsl2x7x_settings.interrupts_en &= 0x10; |
| 1255 | } |
| 1256 | |
| 1257 | tsl2x7x_invoke_change(indio_dev); |
| 1258 | |
| 1259 | return 0; |
| 1260 | } |
| 1261 | |
| 1262 | static int tsl2x7x_write_thresh(struct iio_dev *indio_dev, |
| 1263 | u64 event_code, |
| 1264 | int val) |
| 1265 | { |
| 1266 | struct tsl2X7X_chip *chip = iio_priv(indio_dev); |
| 1267 | |
| 1268 | if (IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(event_code) == IIO_INTENSITY) { |
| 1269 | switch (IIO_EVENT_CODE_EXTRACT_DIR(event_code)) { |
| 1270 | case IIO_EV_DIR_RISING: |
| 1271 | chip->tsl2x7x_settings.als_thresh_high = val; |
| 1272 | break; |
| 1273 | case IIO_EV_DIR_FALLING: |
| 1274 | chip->tsl2x7x_settings.als_thresh_low = val; |
| 1275 | break; |
| 1276 | default: |
| 1277 | return -EINVAL; |
| 1278 | } |
| 1279 | } else { |
| 1280 | switch (IIO_EVENT_CODE_EXTRACT_DIR(event_code)) { |
| 1281 | case IIO_EV_DIR_RISING: |
| 1282 | chip->tsl2x7x_settings.prox_thres_high = val; |
| 1283 | break; |
| 1284 | case IIO_EV_DIR_FALLING: |
| 1285 | chip->tsl2x7x_settings.prox_thres_low = val; |
| 1286 | break; |
| 1287 | default: |
| 1288 | return -EINVAL; |
| 1289 | } |
| 1290 | } |
| 1291 | |
| 1292 | tsl2x7x_invoke_change(indio_dev); |
| 1293 | |
| 1294 | return 0; |
| 1295 | } |
| 1296 | |
| 1297 | static int tsl2x7x_read_thresh(struct iio_dev *indio_dev, |
| 1298 | u64 event_code, |
| 1299 | int *val) |
| 1300 | { |
| 1301 | struct tsl2X7X_chip *chip = iio_priv(indio_dev); |
| 1302 | |
| 1303 | if (IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(event_code) == IIO_INTENSITY) { |
| 1304 | switch (IIO_EVENT_CODE_EXTRACT_DIR(event_code)) { |
| 1305 | case IIO_EV_DIR_RISING: |
| 1306 | *val = chip->tsl2x7x_settings.als_thresh_high; |
| 1307 | break; |
| 1308 | case IIO_EV_DIR_FALLING: |
| 1309 | *val = chip->tsl2x7x_settings.als_thresh_low; |
| 1310 | break; |
| 1311 | default: |
| 1312 | return -EINVAL; |
| 1313 | } |
| 1314 | } else { |
| 1315 | switch (IIO_EVENT_CODE_EXTRACT_DIR(event_code)) { |
| 1316 | case IIO_EV_DIR_RISING: |
| 1317 | *val = chip->tsl2x7x_settings.prox_thres_high; |
| 1318 | break; |
| 1319 | case IIO_EV_DIR_FALLING: |
| 1320 | *val = chip->tsl2x7x_settings.prox_thres_low; |
| 1321 | break; |
| 1322 | default: |
| 1323 | return -EINVAL; |
| 1324 | } |
| 1325 | } |
| 1326 | |
| 1327 | return 0; |
| 1328 | } |
| 1329 | |
| 1330 | static int tsl2x7x_read_raw(struct iio_dev *indio_dev, |
| 1331 | struct iio_chan_spec const *chan, |
| 1332 | int *val, |
| 1333 | int *val2, |
| 1334 | long mask) |
| 1335 | { |
| 1336 | int ret = -EINVAL; |
| 1337 | struct tsl2X7X_chip *chip = iio_priv(indio_dev); |
| 1338 | |
| 1339 | switch (mask) { |
Jon Brenner | 0f3bcfe | 2012-04-24 17:59:10 -0500 | [diff] [blame] | 1340 | case IIO_CHAN_INFO_PROCESSED: |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1341 | switch (chan->type) { |
| 1342 | case IIO_LIGHT: |
| 1343 | tsl2x7x_get_lux(indio_dev); |
| 1344 | *val = chip->als_cur_info.lux; |
| 1345 | ret = IIO_VAL_INT; |
| 1346 | break; |
Jon Brenner | 0f3bcfe | 2012-04-24 17:59:10 -0500 | [diff] [blame] | 1347 | default: |
| 1348 | return -EINVAL; |
| 1349 | break; |
| 1350 | } |
| 1351 | break; |
| 1352 | case IIO_CHAN_INFO_RAW: |
| 1353 | switch (chan->type) { |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1354 | case IIO_INTENSITY: |
| 1355 | tsl2x7x_get_lux(indio_dev); |
| 1356 | if (chan->channel == 0) |
| 1357 | *val = chip->als_cur_info.als_ch0; |
| 1358 | else |
| 1359 | *val = chip->als_cur_info.als_ch1; |
| 1360 | ret = IIO_VAL_INT; |
| 1361 | break; |
| 1362 | case IIO_PROXIMITY: |
| 1363 | tsl2x7x_get_prox(indio_dev); |
| 1364 | *val = chip->prox_data; |
| 1365 | ret = IIO_VAL_INT; |
| 1366 | break; |
| 1367 | default: |
| 1368 | return -EINVAL; |
| 1369 | break; |
| 1370 | } |
| 1371 | break; |
| 1372 | case IIO_CHAN_INFO_CALIBSCALE: |
| 1373 | if (chan->type == IIO_LIGHT) |
| 1374 | *val = |
| 1375 | tsl2X7X_als_gainadj[chip->tsl2x7x_settings.als_gain]; |
| 1376 | else |
| 1377 | *val = |
| 1378 | tsl2X7X_prx_gainadj[chip->tsl2x7x_settings.prox_gain]; |
| 1379 | ret = IIO_VAL_INT; |
| 1380 | break; |
| 1381 | case IIO_CHAN_INFO_CALIBBIAS: |
| 1382 | *val = chip->tsl2x7x_settings.als_gain_trim; |
| 1383 | ret = IIO_VAL_INT; |
| 1384 | break; |
| 1385 | |
| 1386 | default: |
| 1387 | ret = -EINVAL; |
| 1388 | } |
| 1389 | |
| 1390 | return ret; |
| 1391 | } |
| 1392 | |
| 1393 | static int tsl2x7x_write_raw(struct iio_dev *indio_dev, |
| 1394 | struct iio_chan_spec const *chan, |
| 1395 | int val, |
| 1396 | int val2, |
| 1397 | long mask) |
| 1398 | { |
| 1399 | struct tsl2X7X_chip *chip = iio_priv(indio_dev); |
| 1400 | |
| 1401 | switch (mask) { |
| 1402 | case IIO_CHAN_INFO_CALIBSCALE: |
| 1403 | if (chan->type == IIO_INTENSITY) { |
| 1404 | switch (val) { |
| 1405 | case 1: |
| 1406 | chip->tsl2x7x_settings.als_gain = 0; |
| 1407 | break; |
| 1408 | case 8: |
| 1409 | chip->tsl2x7x_settings.als_gain = 1; |
| 1410 | break; |
| 1411 | case 16: |
| 1412 | chip->tsl2x7x_settings.als_gain = 2; |
| 1413 | break; |
| 1414 | case 120: |
| 1415 | switch (chip->id) { |
| 1416 | case tsl2572: |
| 1417 | case tsl2672: |
| 1418 | case tmd2672: |
| 1419 | case tsl2772: |
| 1420 | case tmd2772: |
| 1421 | return -EINVAL; |
| 1422 | break; |
| 1423 | } |
| 1424 | chip->tsl2x7x_settings.als_gain = 3; |
| 1425 | break; |
| 1426 | case 128: |
| 1427 | switch (chip->id) { |
| 1428 | case tsl2571: |
| 1429 | case tsl2671: |
| 1430 | case tmd2671: |
| 1431 | case tsl2771: |
| 1432 | case tmd2771: |
| 1433 | return -EINVAL; |
| 1434 | break; |
| 1435 | } |
| 1436 | chip->tsl2x7x_settings.als_gain = 3; |
| 1437 | break; |
| 1438 | default: |
| 1439 | return -EINVAL; |
| 1440 | } |
| 1441 | } else { |
| 1442 | switch (val) { |
| 1443 | case 1: |
| 1444 | chip->tsl2x7x_settings.prox_gain = 0; |
| 1445 | break; |
| 1446 | case 2: |
| 1447 | chip->tsl2x7x_settings.prox_gain = 1; |
| 1448 | break; |
| 1449 | case 4: |
| 1450 | chip->tsl2x7x_settings.prox_gain = 2; |
| 1451 | break; |
| 1452 | case 8: |
| 1453 | chip->tsl2x7x_settings.prox_gain = 3; |
| 1454 | break; |
| 1455 | default: |
| 1456 | return -EINVAL; |
| 1457 | } |
| 1458 | } |
| 1459 | break; |
| 1460 | case IIO_CHAN_INFO_CALIBBIAS: |
| 1461 | chip->tsl2x7x_settings.als_gain_trim = val; |
| 1462 | break; |
| 1463 | |
| 1464 | default: |
| 1465 | return -EINVAL; |
| 1466 | } |
| 1467 | |
| 1468 | tsl2x7x_invoke_change(indio_dev); |
| 1469 | |
| 1470 | return 0; |
| 1471 | } |
| 1472 | |
| 1473 | static DEVICE_ATTR(power_state, S_IRUGO | S_IWUSR, |
| 1474 | tsl2x7x_power_state_show, tsl2x7x_power_state_store); |
| 1475 | |
| 1476 | static DEVICE_ATTR(in_proximity0_calibscale_available, S_IRUGO, |
| 1477 | tsl2x7x_prox_gain_available_show, NULL); |
| 1478 | |
| 1479 | static DEVICE_ATTR(in_illuminance0_calibscale_available, S_IRUGO, |
| 1480 | tsl2x7x_gain_available_show, NULL); |
| 1481 | |
| 1482 | static DEVICE_ATTR(in_illuminance0_integration_time, S_IRUGO | S_IWUSR, |
| 1483 | tsl2x7x_als_time_show, tsl2x7x_als_time_store); |
| 1484 | |
| 1485 | static DEVICE_ATTR(in_illuminance0_target_input, S_IRUGO | S_IWUSR, |
| 1486 | tsl2x7x_als_cal_target_show, tsl2x7x_als_cal_target_store); |
| 1487 | |
| 1488 | static DEVICE_ATTR(in_illuminance0_calibrate, S_IWUSR, NULL, |
| 1489 | tsl2x7x_do_calibrate); |
| 1490 | |
| 1491 | static DEVICE_ATTR(in_proximity0_calibrate, S_IWUSR, NULL, |
| 1492 | tsl2x7x_do_prox_calibrate); |
| 1493 | |
| 1494 | static DEVICE_ATTR(in_illuminance0_lux_table, S_IRUGO | S_IWUSR, |
| 1495 | tsl2x7x_luxtable_show, tsl2x7x_luxtable_store); |
| 1496 | |
| 1497 | static DEVICE_ATTR(in_intensity0_thresh_period, S_IRUGO | S_IWUSR, |
| 1498 | tsl2x7x_als_persistence_show, tsl2x7x_als_persistence_store); |
| 1499 | |
| 1500 | static DEVICE_ATTR(in_proximity0_thresh_period, S_IRUGO | S_IWUSR, |
| 1501 | tsl2x7x_prox_persistence_show, tsl2x7x_prox_persistence_store); |
| 1502 | |
| 1503 | /* Use the default register values to identify the Taos device */ |
| 1504 | static int tsl2x7x_device_id(unsigned char *id, int target) |
| 1505 | { |
| 1506 | switch (target) { |
| 1507 | case tsl2571: |
| 1508 | case tsl2671: |
| 1509 | case tsl2771: |
| 1510 | return ((*id & 0xf0) == TRITON_ID); |
| 1511 | break; |
| 1512 | case tmd2671: |
| 1513 | case tmd2771: |
| 1514 | return ((*id & 0xf0) == HALIBUT_ID); |
| 1515 | break; |
| 1516 | case tsl2572: |
| 1517 | case tsl2672: |
| 1518 | case tmd2672: |
| 1519 | case tsl2772: |
| 1520 | case tmd2772: |
| 1521 | return ((*id & 0xf0) == SWORDFISH_ID); |
| 1522 | break; |
| 1523 | } |
| 1524 | |
| 1525 | return -EINVAL; |
| 1526 | } |
| 1527 | |
| 1528 | static irqreturn_t tsl2x7x_event_handler(int irq, void *private) |
| 1529 | { |
| 1530 | struct iio_dev *indio_dev = private; |
| 1531 | struct tsl2X7X_chip *chip = iio_priv(indio_dev); |
| 1532 | s64 timestamp = iio_get_time_ns(); |
| 1533 | int ret; |
| 1534 | u8 value; |
| 1535 | |
| 1536 | value = i2c_smbus_read_byte_data(chip->client, |
| 1537 | TSL2X7X_CMD_REG | TSL2X7X_STATUS); |
| 1538 | |
| 1539 | /* What type of interrupt do we need to process */ |
| 1540 | if (value & TSL2X7X_STA_PRX_INTR) { |
| 1541 | tsl2x7x_get_prox(indio_dev); /* freshen data for ABI */ |
| 1542 | iio_push_event(indio_dev, |
| 1543 | IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, |
| 1544 | 0, |
| 1545 | IIO_EV_TYPE_THRESH, |
| 1546 | IIO_EV_DIR_EITHER), |
| 1547 | timestamp); |
| 1548 | } |
| 1549 | |
| 1550 | if (value & TSL2X7X_STA_ALS_INTR) { |
| 1551 | tsl2x7x_get_lux(indio_dev); /* freshen data for ABI */ |
| 1552 | iio_push_event(indio_dev, |
| 1553 | IIO_UNMOD_EVENT_CODE(IIO_LIGHT, |
| 1554 | 0, |
| 1555 | IIO_EV_TYPE_THRESH, |
| 1556 | IIO_EV_DIR_EITHER), |
| 1557 | timestamp); |
| 1558 | } |
| 1559 | /* Clear interrupt now that we have handled it. */ |
| 1560 | ret = i2c_smbus_write_byte(chip->client, |
| 1561 | TSL2X7X_CMD_REG | TSL2X7X_CMD_SPL_FN | |
| 1562 | TSL2X7X_CMD_PROXALS_INT_CLR); |
| 1563 | if (ret < 0) |
| 1564 | dev_err(&chip->client->dev, |
| 1565 | "%s: Failed to clear irq from event handler. err = %d\n", |
| 1566 | __func__, ret); |
| 1567 | |
| 1568 | return IRQ_HANDLED; |
| 1569 | } |
| 1570 | |
| 1571 | static struct attribute *tsl2x7x_ALS_device_attrs[] = { |
| 1572 | &dev_attr_power_state.attr, |
| 1573 | &dev_attr_in_illuminance0_calibscale_available.attr, |
| 1574 | &dev_attr_in_illuminance0_integration_time.attr, |
| 1575 | &iio_const_attr_in_illuminance0_integration_time_available\ |
| 1576 | .dev_attr.attr, |
| 1577 | &dev_attr_in_illuminance0_target_input.attr, |
| 1578 | &dev_attr_in_illuminance0_calibrate.attr, |
| 1579 | &dev_attr_in_illuminance0_lux_table.attr, |
| 1580 | NULL |
| 1581 | }; |
| 1582 | |
| 1583 | static struct attribute *tsl2x7x_PRX_device_attrs[] = { |
| 1584 | &dev_attr_power_state.attr, |
| 1585 | &dev_attr_in_proximity0_calibrate.attr, |
| 1586 | NULL |
| 1587 | }; |
| 1588 | |
| 1589 | static struct attribute *tsl2x7x_ALSPRX_device_attrs[] = { |
| 1590 | &dev_attr_power_state.attr, |
| 1591 | &dev_attr_in_illuminance0_calibscale_available.attr, |
| 1592 | &dev_attr_in_illuminance0_integration_time.attr, |
| 1593 | &iio_const_attr_in_illuminance0_integration_time_available\ |
| 1594 | .dev_attr.attr, |
| 1595 | &dev_attr_in_illuminance0_target_input.attr, |
| 1596 | &dev_attr_in_illuminance0_calibrate.attr, |
| 1597 | &dev_attr_in_illuminance0_lux_table.attr, |
| 1598 | &dev_attr_in_proximity0_calibrate.attr, |
| 1599 | NULL |
| 1600 | }; |
| 1601 | |
| 1602 | static struct attribute *tsl2x7x_PRX2_device_attrs[] = { |
| 1603 | &dev_attr_power_state.attr, |
| 1604 | &dev_attr_in_proximity0_calibrate.attr, |
| 1605 | &dev_attr_in_proximity0_calibscale_available.attr, |
| 1606 | NULL |
| 1607 | }; |
| 1608 | |
| 1609 | static struct attribute *tsl2x7x_ALSPRX2_device_attrs[] = { |
| 1610 | &dev_attr_power_state.attr, |
| 1611 | &dev_attr_in_illuminance0_calibscale_available.attr, |
| 1612 | &dev_attr_in_illuminance0_integration_time.attr, |
| 1613 | &iio_const_attr_in_illuminance0_integration_time_available\ |
| 1614 | .dev_attr.attr, |
| 1615 | &dev_attr_in_illuminance0_target_input.attr, |
| 1616 | &dev_attr_in_illuminance0_calibrate.attr, |
| 1617 | &dev_attr_in_illuminance0_lux_table.attr, |
| 1618 | &dev_attr_in_proximity0_calibrate.attr, |
| 1619 | &dev_attr_in_proximity0_calibscale_available.attr, |
| 1620 | NULL |
| 1621 | }; |
| 1622 | |
| 1623 | static struct attribute *tsl2X7X_ALS_event_attrs[] = { |
| 1624 | &dev_attr_in_intensity0_thresh_period.attr, |
| 1625 | NULL, |
| 1626 | }; |
| 1627 | static struct attribute *tsl2X7X_PRX_event_attrs[] = { |
| 1628 | &dev_attr_in_proximity0_thresh_period.attr, |
| 1629 | NULL, |
| 1630 | }; |
| 1631 | |
| 1632 | static struct attribute *tsl2X7X_ALSPRX_event_attrs[] = { |
| 1633 | &dev_attr_in_intensity0_thresh_period.attr, |
| 1634 | &dev_attr_in_proximity0_thresh_period.attr, |
| 1635 | NULL, |
| 1636 | }; |
| 1637 | |
| 1638 | static const struct attribute_group tsl2X7X_device_attr_group_tbl[] = { |
| 1639 | [ALS] = { |
| 1640 | .attrs = tsl2x7x_ALS_device_attrs, |
| 1641 | }, |
| 1642 | [PRX] = { |
| 1643 | .attrs = tsl2x7x_PRX_device_attrs, |
| 1644 | }, |
| 1645 | [ALSPRX] = { |
| 1646 | .attrs = tsl2x7x_ALSPRX_device_attrs, |
| 1647 | }, |
| 1648 | [PRX2] = { |
| 1649 | .attrs = tsl2x7x_PRX2_device_attrs, |
| 1650 | }, |
| 1651 | [ALSPRX2] = { |
| 1652 | .attrs = tsl2x7x_ALSPRX2_device_attrs, |
| 1653 | }, |
| 1654 | }; |
| 1655 | |
| 1656 | static struct attribute_group tsl2X7X_event_attr_group_tbl[] = { |
| 1657 | [ALS] = { |
| 1658 | .attrs = tsl2X7X_ALS_event_attrs, |
| 1659 | .name = "events", |
| 1660 | }, |
| 1661 | [PRX] = { |
| 1662 | .attrs = tsl2X7X_PRX_event_attrs, |
| 1663 | .name = "events", |
| 1664 | }, |
| 1665 | [ALSPRX] = { |
| 1666 | .attrs = tsl2X7X_ALSPRX_event_attrs, |
| 1667 | .name = "events", |
| 1668 | }, |
| 1669 | }; |
| 1670 | |
| 1671 | static const struct iio_info tsl2X7X_device_info[] = { |
| 1672 | [ALS] = { |
| 1673 | .attrs = &tsl2X7X_device_attr_group_tbl[ALS], |
| 1674 | .event_attrs = &tsl2X7X_event_attr_group_tbl[ALS], |
| 1675 | .driver_module = THIS_MODULE, |
| 1676 | .read_raw = &tsl2x7x_read_raw, |
| 1677 | .write_raw = &tsl2x7x_write_raw, |
| 1678 | .read_event_value = &tsl2x7x_read_thresh, |
| 1679 | .write_event_value = &tsl2x7x_write_thresh, |
| 1680 | .read_event_config = &tsl2x7x_read_interrupt_config, |
| 1681 | .write_event_config = &tsl2x7x_write_interrupt_config, |
| 1682 | }, |
| 1683 | [PRX] = { |
| 1684 | .attrs = &tsl2X7X_device_attr_group_tbl[PRX], |
| 1685 | .event_attrs = &tsl2X7X_event_attr_group_tbl[PRX], |
| 1686 | .driver_module = THIS_MODULE, |
| 1687 | .read_raw = &tsl2x7x_read_raw, |
| 1688 | .write_raw = &tsl2x7x_write_raw, |
| 1689 | .read_event_value = &tsl2x7x_read_thresh, |
| 1690 | .write_event_value = &tsl2x7x_write_thresh, |
| 1691 | .read_event_config = &tsl2x7x_read_interrupt_config, |
| 1692 | .write_event_config = &tsl2x7x_write_interrupt_config, |
| 1693 | }, |
| 1694 | [ALSPRX] = { |
| 1695 | .attrs = &tsl2X7X_device_attr_group_tbl[ALSPRX], |
| 1696 | .event_attrs = &tsl2X7X_event_attr_group_tbl[ALSPRX], |
| 1697 | .driver_module = THIS_MODULE, |
| 1698 | .read_raw = &tsl2x7x_read_raw, |
| 1699 | .write_raw = &tsl2x7x_write_raw, |
| 1700 | .read_event_value = &tsl2x7x_read_thresh, |
| 1701 | .write_event_value = &tsl2x7x_write_thresh, |
| 1702 | .read_event_config = &tsl2x7x_read_interrupt_config, |
| 1703 | .write_event_config = &tsl2x7x_write_interrupt_config, |
| 1704 | }, |
| 1705 | [PRX2] = { |
| 1706 | .attrs = &tsl2X7X_device_attr_group_tbl[PRX2], |
| 1707 | .event_attrs = &tsl2X7X_event_attr_group_tbl[PRX], |
| 1708 | .driver_module = THIS_MODULE, |
| 1709 | .read_raw = &tsl2x7x_read_raw, |
| 1710 | .write_raw = &tsl2x7x_write_raw, |
| 1711 | .read_event_value = &tsl2x7x_read_thresh, |
| 1712 | .write_event_value = &tsl2x7x_write_thresh, |
| 1713 | .read_event_config = &tsl2x7x_read_interrupt_config, |
| 1714 | .write_event_config = &tsl2x7x_write_interrupt_config, |
| 1715 | }, |
| 1716 | [ALSPRX2] = { |
| 1717 | .attrs = &tsl2X7X_device_attr_group_tbl[ALSPRX2], |
| 1718 | .event_attrs = &tsl2X7X_event_attr_group_tbl[ALSPRX], |
| 1719 | .driver_module = THIS_MODULE, |
| 1720 | .read_raw = &tsl2x7x_read_raw, |
| 1721 | .write_raw = &tsl2x7x_write_raw, |
| 1722 | .read_event_value = &tsl2x7x_read_thresh, |
| 1723 | .write_event_value = &tsl2x7x_write_thresh, |
| 1724 | .read_event_config = &tsl2x7x_read_interrupt_config, |
| 1725 | .write_event_config = &tsl2x7x_write_interrupt_config, |
| 1726 | }, |
| 1727 | }; |
| 1728 | |
| 1729 | static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = { |
| 1730 | [ALS] = { |
| 1731 | .channel = { |
| 1732 | { |
| 1733 | .type = IIO_LIGHT, |
| 1734 | .indexed = 1, |
| 1735 | .channel = 0, |
Jonathan Cameron | cca9b7f | 2013-02-27 19:40:11 +0000 | [diff] [blame] | 1736 | .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1737 | }, { |
| 1738 | .type = IIO_INTENSITY, |
| 1739 | .indexed = 1, |
| 1740 | .channel = 0, |
Jonathan Cameron | cca9b7f | 2013-02-27 19:40:11 +0000 | [diff] [blame] | 1741 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | |
| 1742 | BIT(IIO_CHAN_INFO_CALIBSCALE) | |
| 1743 | BIT(IIO_CHAN_INFO_CALIBBIAS), |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1744 | .event_mask = TSL2X7X_EVENT_MASK |
| 1745 | }, { |
| 1746 | .type = IIO_INTENSITY, |
| 1747 | .indexed = 1, |
| 1748 | .channel = 1, |
| 1749 | }, |
| 1750 | }, |
| 1751 | .chan_table_elements = 3, |
| 1752 | .info = &tsl2X7X_device_info[ALS], |
| 1753 | }, |
| 1754 | [PRX] = { |
| 1755 | .channel = { |
| 1756 | { |
| 1757 | .type = IIO_PROXIMITY, |
| 1758 | .indexed = 1, |
| 1759 | .channel = 0, |
Jonathan Cameron | cca9b7f | 2013-02-27 19:40:11 +0000 | [diff] [blame] | 1760 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1761 | .event_mask = TSL2X7X_EVENT_MASK |
| 1762 | }, |
| 1763 | }, |
| 1764 | .chan_table_elements = 1, |
| 1765 | .info = &tsl2X7X_device_info[PRX], |
| 1766 | }, |
| 1767 | [ALSPRX] = { |
| 1768 | .channel = { |
| 1769 | { |
| 1770 | .type = IIO_LIGHT, |
| 1771 | .indexed = 1, |
| 1772 | .channel = 0, |
Jonathan Cameron | cca9b7f | 2013-02-27 19:40:11 +0000 | [diff] [blame] | 1773 | .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1774 | }, { |
| 1775 | .type = IIO_INTENSITY, |
| 1776 | .indexed = 1, |
| 1777 | .channel = 0, |
Jonathan Cameron | cca9b7f | 2013-02-27 19:40:11 +0000 | [diff] [blame] | 1778 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | |
| 1779 | BIT(IIO_CHAN_INFO_CALIBSCALE) | |
| 1780 | BIT(IIO_CHAN_INFO_CALIBBIAS), |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1781 | .event_mask = TSL2X7X_EVENT_MASK |
| 1782 | }, { |
| 1783 | .type = IIO_INTENSITY, |
| 1784 | .indexed = 1, |
| 1785 | .channel = 1, |
Jonathan Cameron | cca9b7f | 2013-02-27 19:40:11 +0000 | [diff] [blame] | 1786 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1787 | }, { |
| 1788 | .type = IIO_PROXIMITY, |
| 1789 | .indexed = 1, |
| 1790 | .channel = 0, |
Jonathan Cameron | cca9b7f | 2013-02-27 19:40:11 +0000 | [diff] [blame] | 1791 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1792 | .event_mask = TSL2X7X_EVENT_MASK |
| 1793 | }, |
| 1794 | }, |
| 1795 | .chan_table_elements = 4, |
| 1796 | .info = &tsl2X7X_device_info[ALSPRX], |
| 1797 | }, |
| 1798 | [PRX2] = { |
| 1799 | .channel = { |
| 1800 | { |
| 1801 | .type = IIO_PROXIMITY, |
| 1802 | .indexed = 1, |
| 1803 | .channel = 0, |
Jonathan Cameron | cca9b7f | 2013-02-27 19:40:11 +0000 | [diff] [blame] | 1804 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | |
| 1805 | BIT(IIO_CHAN_INFO_CALIBSCALE), |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1806 | .event_mask = TSL2X7X_EVENT_MASK |
| 1807 | }, |
| 1808 | }, |
| 1809 | .chan_table_elements = 1, |
| 1810 | .info = &tsl2X7X_device_info[PRX2], |
| 1811 | }, |
| 1812 | [ALSPRX2] = { |
| 1813 | .channel = { |
| 1814 | { |
| 1815 | .type = IIO_LIGHT, |
| 1816 | .indexed = 1, |
| 1817 | .channel = 0, |
Jonathan Cameron | cca9b7f | 2013-02-27 19:40:11 +0000 | [diff] [blame] | 1818 | .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1819 | }, { |
| 1820 | .type = IIO_INTENSITY, |
| 1821 | .indexed = 1, |
| 1822 | .channel = 0, |
Jonathan Cameron | cca9b7f | 2013-02-27 19:40:11 +0000 | [diff] [blame] | 1823 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | |
| 1824 | BIT(IIO_CHAN_INFO_CALIBSCALE) | |
| 1825 | BIT(IIO_CHAN_INFO_CALIBBIAS), |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1826 | .event_mask = TSL2X7X_EVENT_MASK |
| 1827 | }, { |
| 1828 | .type = IIO_INTENSITY, |
| 1829 | .indexed = 1, |
| 1830 | .channel = 1, |
Jonathan Cameron | cca9b7f | 2013-02-27 19:40:11 +0000 | [diff] [blame] | 1831 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1832 | }, { |
| 1833 | .type = IIO_PROXIMITY, |
| 1834 | .indexed = 1, |
| 1835 | .channel = 0, |
Jonathan Cameron | cca9b7f | 2013-02-27 19:40:11 +0000 | [diff] [blame] | 1836 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | |
| 1837 | BIT(IIO_CHAN_INFO_CALIBSCALE), |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1838 | .event_mask = TSL2X7X_EVENT_MASK |
| 1839 | }, |
| 1840 | }, |
| 1841 | .chan_table_elements = 4, |
| 1842 | .info = &tsl2X7X_device_info[ALSPRX2], |
| 1843 | }, |
| 1844 | }; |
| 1845 | |
Bill Pemberton | 4ae1c61 | 2012-11-19 13:21:57 -0500 | [diff] [blame] | 1846 | static int tsl2x7x_probe(struct i2c_client *clientp, |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1847 | const struct i2c_device_id *id) |
| 1848 | { |
| 1849 | int ret; |
| 1850 | unsigned char device_id; |
| 1851 | struct iio_dev *indio_dev; |
| 1852 | struct tsl2X7X_chip *chip; |
| 1853 | |
Lars-Peter Clausen | 7cbb753 | 2012-04-26 13:35:01 +0200 | [diff] [blame] | 1854 | indio_dev = iio_device_alloc(sizeof(*chip)); |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1855 | if (!indio_dev) |
| 1856 | return -ENOMEM; |
| 1857 | |
| 1858 | chip = iio_priv(indio_dev); |
| 1859 | chip->client = clientp; |
| 1860 | i2c_set_clientdata(clientp, indio_dev); |
| 1861 | |
| 1862 | ret = tsl2x7x_i2c_read(chip->client, |
| 1863 | TSL2X7X_CHIPID, &device_id); |
| 1864 | if (ret < 0) |
| 1865 | goto fail1; |
| 1866 | |
| 1867 | if ((!tsl2x7x_device_id(&device_id, id->driver_data)) || |
| 1868 | (tsl2x7x_device_id(&device_id, id->driver_data) == -EINVAL)) { |
| 1869 | dev_info(&chip->client->dev, |
| 1870 | "%s: i2c device found does not match expected id\n", |
| 1871 | __func__); |
Wei Yongjun | 3b81379 | 2013-05-07 12:51:00 +0100 | [diff] [blame] | 1872 | ret = -EINVAL; |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1873 | goto fail1; |
| 1874 | } |
| 1875 | |
| 1876 | ret = i2c_smbus_write_byte(clientp, (TSL2X7X_CMD_REG | TSL2X7X_CNTRL)); |
| 1877 | if (ret < 0) { |
| 1878 | dev_err(&clientp->dev, "%s: write to cmd reg failed. err = %d\n", |
| 1879 | __func__, ret); |
| 1880 | goto fail1; |
| 1881 | } |
| 1882 | |
| 1883 | /* ALS and PROX functions can be invoked via user space poll |
| 1884 | * or H/W interrupt. If busy return last sample. */ |
| 1885 | mutex_init(&chip->als_mutex); |
| 1886 | mutex_init(&chip->prox_mutex); |
| 1887 | |
| 1888 | chip->tsl2x7x_chip_status = TSL2X7X_CHIP_UNKNOWN; |
| 1889 | chip->pdata = clientp->dev.platform_data; |
| 1890 | chip->id = id->driver_data; |
| 1891 | chip->chip_info = |
| 1892 | &tsl2x7x_chip_info_tbl[device_channel_config[id->driver_data]]; |
| 1893 | |
| 1894 | indio_dev->info = chip->chip_info->info; |
| 1895 | indio_dev->dev.parent = &clientp->dev; |
| 1896 | indio_dev->modes = INDIO_DIRECT_MODE; |
| 1897 | indio_dev->name = chip->client->name; |
| 1898 | indio_dev->channels = chip->chip_info->channel; |
| 1899 | indio_dev->num_channels = chip->chip_info->chan_table_elements; |
| 1900 | |
| 1901 | if (clientp->irq) { |
| 1902 | ret = request_threaded_irq(clientp->irq, |
| 1903 | NULL, |
| 1904 | &tsl2x7x_event_handler, |
| 1905 | IRQF_TRIGGER_RISING | IRQF_ONESHOT, |
| 1906 | "TSL2X7X_event", |
| 1907 | indio_dev); |
| 1908 | if (ret) { |
| 1909 | dev_err(&clientp->dev, |
| 1910 | "%s: irq request failed", __func__); |
Wei Yongjun | 3b81379 | 2013-05-07 12:51:00 +0100 | [diff] [blame] | 1911 | goto fail1; |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1912 | } |
| 1913 | } |
| 1914 | |
| 1915 | /* Load up the defaults */ |
| 1916 | tsl2x7x_defaults(chip); |
| 1917 | /* Make sure the chip is on */ |
| 1918 | tsl2x7x_chip_on(indio_dev); |
| 1919 | |
| 1920 | ret = iio_device_register(indio_dev); |
| 1921 | if (ret) { |
| 1922 | dev_err(&clientp->dev, |
| 1923 | "%s: iio registration failed\n", __func__); |
Wei Yongjun | 3b81379 | 2013-05-07 12:51:00 +0100 | [diff] [blame] | 1924 | goto fail2; |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1925 | } |
| 1926 | |
| 1927 | dev_info(&clientp->dev, "%s Light sensor found.\n", id->name); |
| 1928 | |
| 1929 | return 0; |
| 1930 | |
Wei Yongjun | 3b81379 | 2013-05-07 12:51:00 +0100 | [diff] [blame] | 1931 | fail2: |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1932 | if (clientp->irq) |
| 1933 | free_irq(clientp->irq, indio_dev); |
Wei Yongjun | 3b81379 | 2013-05-07 12:51:00 +0100 | [diff] [blame] | 1934 | fail1: |
Lars-Peter Clausen | 7cbb753 | 2012-04-26 13:35:01 +0200 | [diff] [blame] | 1935 | iio_device_free(indio_dev); |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1936 | |
| 1937 | return ret; |
| 1938 | } |
| 1939 | |
| 1940 | static int tsl2x7x_suspend(struct device *dev) |
| 1941 | { |
| 1942 | struct iio_dev *indio_dev = dev_get_drvdata(dev); |
| 1943 | struct tsl2X7X_chip *chip = iio_priv(indio_dev); |
| 1944 | int ret = 0; |
| 1945 | |
| 1946 | if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_WORKING) { |
| 1947 | ret = tsl2x7x_chip_off(indio_dev); |
| 1948 | chip->tsl2x7x_chip_status = TSL2X7X_CHIP_SUSPENDED; |
| 1949 | } |
| 1950 | |
| 1951 | if (chip->pdata && chip->pdata->platform_power) { |
| 1952 | pm_message_t pmm = {PM_EVENT_SUSPEND}; |
| 1953 | chip->pdata->platform_power(dev, pmm); |
| 1954 | } |
| 1955 | |
| 1956 | return ret; |
| 1957 | } |
| 1958 | |
| 1959 | static int tsl2x7x_resume(struct device *dev) |
| 1960 | { |
| 1961 | struct iio_dev *indio_dev = dev_get_drvdata(dev); |
| 1962 | struct tsl2X7X_chip *chip = iio_priv(indio_dev); |
| 1963 | int ret = 0; |
| 1964 | |
| 1965 | if (chip->pdata && chip->pdata->platform_power) { |
| 1966 | pm_message_t pmm = {PM_EVENT_RESUME}; |
| 1967 | chip->pdata->platform_power(dev, pmm); |
| 1968 | } |
| 1969 | |
| 1970 | if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_SUSPENDED) |
| 1971 | ret = tsl2x7x_chip_on(indio_dev); |
| 1972 | |
| 1973 | return ret; |
| 1974 | } |
| 1975 | |
Bill Pemberton | 447d4f2 | 2012-11-19 13:26:37 -0500 | [diff] [blame] | 1976 | static int tsl2x7x_remove(struct i2c_client *client) |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1977 | { |
Lars-Peter Clausen | 79d2a6b | 2012-07-13 13:04:00 +0100 | [diff] [blame] | 1978 | struct iio_dev *indio_dev = i2c_get_clientdata(client); |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1979 | |
| 1980 | tsl2x7x_chip_off(indio_dev); |
| 1981 | |
| 1982 | iio_device_unregister(indio_dev); |
| 1983 | if (client->irq) |
Lars-Peter Clausen | d291d5f | 2012-07-13 13:04:00 +0100 | [diff] [blame] | 1984 | free_irq(client->irq, indio_dev); |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1985 | |
Lars-Peter Clausen | 7cbb753 | 2012-04-26 13:35:01 +0200 | [diff] [blame] | 1986 | iio_device_free(indio_dev); |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 1987 | |
| 1988 | return 0; |
| 1989 | } |
| 1990 | |
| 1991 | static struct i2c_device_id tsl2x7x_idtable[] = { |
| 1992 | { "tsl2571", tsl2571 }, |
| 1993 | { "tsl2671", tsl2671 }, |
| 1994 | { "tmd2671", tmd2671 }, |
| 1995 | { "tsl2771", tsl2771 }, |
| 1996 | { "tmd2771", tmd2771 }, |
| 1997 | { "tsl2572", tsl2572 }, |
| 1998 | { "tsl2672", tsl2672 }, |
| 1999 | { "tmd2672", tmd2672 }, |
| 2000 | { "tsl2772", tsl2772 }, |
| 2001 | { "tmd2772", tmd2772 }, |
| 2002 | {} |
| 2003 | }; |
| 2004 | |
| 2005 | MODULE_DEVICE_TABLE(i2c, tsl2x7x_idtable); |
| 2006 | |
| 2007 | static const struct dev_pm_ops tsl2x7x_pm_ops = { |
| 2008 | .suspend = tsl2x7x_suspend, |
| 2009 | .resume = tsl2x7x_resume, |
| 2010 | }; |
| 2011 | |
| 2012 | /* Driver definition */ |
| 2013 | static struct i2c_driver tsl2x7x_driver = { |
| 2014 | .driver = { |
| 2015 | .name = "tsl2x7x", |
| 2016 | .pm = &tsl2x7x_pm_ops, |
| 2017 | }, |
| 2018 | .id_table = tsl2x7x_idtable, |
| 2019 | .probe = tsl2x7x_probe, |
Bill Pemberton | e543acf | 2012-11-19 13:21:38 -0500 | [diff] [blame] | 2020 | .remove = tsl2x7x_remove, |
Jon Brenner | 3c97c08 | 2012-04-24 11:56:49 -0500 | [diff] [blame] | 2021 | }; |
| 2022 | |
| 2023 | module_i2c_driver(tsl2x7x_driver); |
| 2024 | |
| 2025 | MODULE_AUTHOR("J. August Brenner<jbrenner@taosinc.com>"); |
| 2026 | MODULE_DESCRIPTION("TAOS tsl2x7x ambient and proximity light sensor driver"); |
| 2027 | MODULE_LICENSE("GPL"); |