Matt Ranostay | d6ad805 | 2018-02-17 21:36:46 -0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 2 | /* |
| 3 | * apds9960.c - Support for Avago APDS9960 gesture/RGB/ALS/proximity sensor |
| 4 | * |
Matt Ranostay | d6ad805 | 2018-02-17 21:36:46 -0800 | [diff] [blame] | 5 | * Copyright (C) 2015, 2018 |
| 6 | * Author: Matt Ranostay <matt.ranostay@konsulko.com> |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 7 | * |
| 8 | * TODO: gesture + proximity calib offsets |
| 9 | */ |
| 10 | |
Max Leiter | b9968e1 | 2020-12-19 17:50:55 -0800 | [diff] [blame] | 11 | #include <linux/acpi.h> |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 12 | #include <linux/module.h> |
| 13 | #include <linux/init.h> |
| 14 | #include <linux/interrupt.h> |
| 15 | #include <linux/delay.h> |
| 16 | #include <linux/mutex.h> |
| 17 | #include <linux/err.h> |
| 18 | #include <linux/irq.h> |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 19 | #include <linux/i2c.h> |
| 20 | #include <linux/pm_runtime.h> |
| 21 | #include <linux/regmap.h> |
| 22 | #include <linux/iio/iio.h> |
| 23 | #include <linux/iio/buffer.h> |
| 24 | #include <linux/iio/events.h> |
| 25 | #include <linux/iio/kfifo_buf.h> |
| 26 | #include <linux/iio/sysfs.h> |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 27 | |
| 28 | #define APDS9960_REGMAP_NAME "apds9960_regmap" |
| 29 | #define APDS9960_DRV_NAME "apds9960" |
| 30 | |
| 31 | #define APDS9960_REG_RAM_START 0x00 |
| 32 | #define APDS9960_REG_RAM_END 0x7f |
| 33 | |
| 34 | #define APDS9960_REG_ENABLE 0x80 |
| 35 | #define APDS9960_REG_ATIME 0x81 |
| 36 | #define APDS9960_REG_WTIME 0x83 |
| 37 | |
| 38 | #define APDS9960_REG_AILTL 0x84 |
| 39 | #define APDS9960_REG_AILTH 0x85 |
| 40 | #define APDS9960_REG_AIHTL 0x86 |
| 41 | #define APDS9960_REG_AIHTH 0x87 |
| 42 | |
| 43 | #define APDS9960_REG_PILT 0x89 |
| 44 | #define APDS9960_REG_PIHT 0x8b |
| 45 | #define APDS9960_REG_PERS 0x8c |
| 46 | |
| 47 | #define APDS9960_REG_CONFIG_1 0x8d |
| 48 | #define APDS9960_REG_PPULSE 0x8e |
| 49 | |
| 50 | #define APDS9960_REG_CONTROL 0x8f |
| 51 | #define APDS9960_REG_CONTROL_AGAIN_MASK 0x03 |
| 52 | #define APDS9960_REG_CONTROL_PGAIN_MASK 0x0c |
| 53 | #define APDS9960_REG_CONTROL_AGAIN_MASK_SHIFT 0 |
| 54 | #define APDS9960_REG_CONTROL_PGAIN_MASK_SHIFT 2 |
| 55 | |
| 56 | #define APDS9960_REG_CONFIG_2 0x90 |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 57 | #define APDS9960_REG_ID 0x92 |
| 58 | |
| 59 | #define APDS9960_REG_STATUS 0x93 |
| 60 | #define APDS9960_REG_STATUS_PS_INT BIT(5) |
| 61 | #define APDS9960_REG_STATUS_ALS_INT BIT(4) |
| 62 | #define APDS9960_REG_STATUS_GINT BIT(2) |
| 63 | |
| 64 | #define APDS9960_REG_PDATA 0x9c |
| 65 | #define APDS9960_REG_POFFSET_UR 0x9d |
| 66 | #define APDS9960_REG_POFFSET_DL 0x9e |
| 67 | #define APDS9960_REG_CONFIG_3 0x9f |
| 68 | |
| 69 | #define APDS9960_REG_GPENTH 0xa0 |
| 70 | #define APDS9960_REG_GEXTH 0xa1 |
| 71 | |
| 72 | #define APDS9960_REG_GCONF_1 0xa2 |
| 73 | #define APDS9960_REG_GCONF_1_GFIFO_THRES_MASK 0xc0 |
| 74 | #define APDS9960_REG_GCONF_1_GFIFO_THRES_MASK_SHIFT 6 |
| 75 | |
| 76 | #define APDS9960_REG_GCONF_2 0xa3 |
Alejandro Concepción Rodríguez | 0aa60ff | 2022-11-06 01:56:51 +0000 | [diff] [blame] | 77 | #define APDS9960_REG_GCONF_2_GGAIN_MASK 0x60 |
| 78 | #define APDS9960_REG_GCONF_2_GGAIN_MASK_SHIFT 5 |
| 79 | |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 80 | #define APDS9960_REG_GOFFSET_U 0xa4 |
| 81 | #define APDS9960_REG_GOFFSET_D 0xa5 |
| 82 | #define APDS9960_REG_GPULSE 0xa6 |
| 83 | #define APDS9960_REG_GOFFSET_L 0xa7 |
| 84 | #define APDS9960_REG_GOFFSET_R 0xa9 |
| 85 | #define APDS9960_REG_GCONF_3 0xaa |
| 86 | |
| 87 | #define APDS9960_REG_GCONF_4 0xab |
| 88 | #define APDS9960_REG_GFLVL 0xae |
| 89 | #define APDS9960_REG_GSTATUS 0xaf |
| 90 | |
| 91 | #define APDS9960_REG_IFORCE 0xe4 |
| 92 | #define APDS9960_REG_PICLEAR 0xe5 |
| 93 | #define APDS9960_REG_CICLEAR 0xe6 |
| 94 | #define APDS9960_REG_AICLEAR 0xe7 |
| 95 | |
| 96 | #define APDS9960_DEFAULT_PERS 0x33 |
| 97 | #define APDS9960_DEFAULT_GPENTH 0x50 |
| 98 | #define APDS9960_DEFAULT_GEXTH 0x40 |
| 99 | |
| 100 | #define APDS9960_MAX_PXS_THRES_VAL 255 |
| 101 | #define APDS9960_MAX_ALS_THRES_VAL 0xffff |
| 102 | #define APDS9960_MAX_INT_TIME_IN_US 1000000 |
| 103 | |
| 104 | enum apds9960_als_channel_idx { |
| 105 | IDX_ALS_CLEAR, IDX_ALS_RED, IDX_ALS_GREEN, IDX_ALS_BLUE, |
| 106 | }; |
| 107 | |
| 108 | #define APDS9960_REG_ALS_BASE 0x94 |
| 109 | #define APDS9960_REG_ALS_CHANNEL(_colour) \ |
| 110 | (APDS9960_REG_ALS_BASE + (IDX_ALS_##_colour * 2)) |
| 111 | |
| 112 | enum apds9960_gesture_channel_idx { |
| 113 | IDX_DIR_UP, IDX_DIR_DOWN, IDX_DIR_LEFT, IDX_DIR_RIGHT, |
| 114 | }; |
| 115 | |
| 116 | #define APDS9960_REG_GFIFO_BASE 0xfc |
| 117 | #define APDS9960_REG_GFIFO_DIR(_dir) \ |
| 118 | (APDS9960_REG_GFIFO_BASE + IDX_DIR_##_dir) |
| 119 | |
| 120 | struct apds9960_data { |
| 121 | struct i2c_client *client; |
| 122 | struct iio_dev *indio_dev; |
| 123 | struct mutex lock; |
| 124 | |
| 125 | /* regmap fields */ |
| 126 | struct regmap *regmap; |
| 127 | struct regmap_field *reg_int_als; |
| 128 | struct regmap_field *reg_int_ges; |
| 129 | struct regmap_field *reg_int_pxs; |
| 130 | |
| 131 | struct regmap_field *reg_enable_als; |
| 132 | struct regmap_field *reg_enable_ges; |
| 133 | struct regmap_field *reg_enable_pxs; |
| 134 | |
| 135 | /* state */ |
| 136 | int als_int; |
| 137 | int pxs_int; |
| 138 | int gesture_mode_running; |
| 139 | |
| 140 | /* gain values */ |
| 141 | int als_gain; |
| 142 | int pxs_gain; |
| 143 | |
| 144 | /* integration time value in us */ |
| 145 | int als_adc_int_us; |
| 146 | |
| 147 | /* gesture buffer */ |
| 148 | u8 buffer[4]; /* 4 8-bit channels */ |
| 149 | }; |
| 150 | |
| 151 | static const struct reg_default apds9960_reg_defaults[] = { |
| 152 | /* Default ALS integration time = 2.48ms */ |
| 153 | { APDS9960_REG_ATIME, 0xff }, |
| 154 | }; |
| 155 | |
| 156 | static const struct regmap_range apds9960_volatile_ranges[] = { |
| 157 | regmap_reg_range(APDS9960_REG_STATUS, |
| 158 | APDS9960_REG_PDATA), |
| 159 | regmap_reg_range(APDS9960_REG_GFLVL, |
| 160 | APDS9960_REG_GSTATUS), |
| 161 | regmap_reg_range(APDS9960_REG_GFIFO_DIR(UP), |
| 162 | APDS9960_REG_GFIFO_DIR(RIGHT)), |
| 163 | regmap_reg_range(APDS9960_REG_IFORCE, |
| 164 | APDS9960_REG_AICLEAR), |
| 165 | }; |
| 166 | |
| 167 | static const struct regmap_access_table apds9960_volatile_table = { |
| 168 | .yes_ranges = apds9960_volatile_ranges, |
| 169 | .n_yes_ranges = ARRAY_SIZE(apds9960_volatile_ranges), |
| 170 | }; |
| 171 | |
| 172 | static const struct regmap_range apds9960_precious_ranges[] = { |
| 173 | regmap_reg_range(APDS9960_REG_RAM_START, APDS9960_REG_RAM_END), |
| 174 | }; |
| 175 | |
| 176 | static const struct regmap_access_table apds9960_precious_table = { |
| 177 | .yes_ranges = apds9960_precious_ranges, |
| 178 | .n_yes_ranges = ARRAY_SIZE(apds9960_precious_ranges), |
| 179 | }; |
| 180 | |
| 181 | static const struct regmap_range apds9960_readable_ranges[] = { |
| 182 | regmap_reg_range(APDS9960_REG_ENABLE, |
| 183 | APDS9960_REG_GSTATUS), |
| 184 | regmap_reg_range(APDS9960_REG_GFIFO_DIR(UP), |
| 185 | APDS9960_REG_GFIFO_DIR(RIGHT)), |
| 186 | }; |
| 187 | |
| 188 | static const struct regmap_access_table apds9960_readable_table = { |
| 189 | .yes_ranges = apds9960_readable_ranges, |
| 190 | .n_yes_ranges = ARRAY_SIZE(apds9960_readable_ranges), |
| 191 | }; |
| 192 | |
| 193 | static const struct regmap_range apds9960_writeable_ranges[] = { |
| 194 | regmap_reg_range(APDS9960_REG_ENABLE, APDS9960_REG_CONFIG_2), |
| 195 | regmap_reg_range(APDS9960_REG_POFFSET_UR, APDS9960_REG_GCONF_4), |
| 196 | regmap_reg_range(APDS9960_REG_IFORCE, APDS9960_REG_AICLEAR), |
| 197 | }; |
| 198 | |
| 199 | static const struct regmap_access_table apds9960_writeable_table = { |
| 200 | .yes_ranges = apds9960_writeable_ranges, |
| 201 | .n_yes_ranges = ARRAY_SIZE(apds9960_writeable_ranges), |
| 202 | }; |
| 203 | |
| 204 | static const struct regmap_config apds9960_regmap_config = { |
| 205 | .name = APDS9960_REGMAP_NAME, |
| 206 | .reg_bits = 8, |
| 207 | .val_bits = 8, |
David Frey | 1c96a2f | 2018-09-01 09:50:41 -0700 | [diff] [blame] | 208 | .use_single_read = true, |
| 209 | .use_single_write = true, |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 210 | |
| 211 | .volatile_table = &apds9960_volatile_table, |
| 212 | .precious_table = &apds9960_precious_table, |
| 213 | .rd_table = &apds9960_readable_table, |
| 214 | .wr_table = &apds9960_writeable_table, |
| 215 | |
| 216 | .reg_defaults = apds9960_reg_defaults, |
| 217 | .num_reg_defaults = ARRAY_SIZE(apds9960_reg_defaults), |
| 218 | .max_register = APDS9960_REG_GFIFO_DIR(RIGHT), |
| 219 | .cache_type = REGCACHE_RBTREE, |
| 220 | }; |
| 221 | |
| 222 | static const struct iio_event_spec apds9960_pxs_event_spec[] = { |
| 223 | { |
| 224 | .type = IIO_EV_TYPE_THRESH, |
| 225 | .dir = IIO_EV_DIR_RISING, |
Subhajit Ghosh | 5ae3449 | 2022-11-10 18:12:41 +0800 | [diff] [blame] | 226 | .mask_separate = BIT(IIO_EV_INFO_VALUE), |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 227 | }, |
| 228 | { |
| 229 | .type = IIO_EV_TYPE_THRESH, |
| 230 | .dir = IIO_EV_DIR_FALLING, |
Subhajit Ghosh | 5ae3449 | 2022-11-10 18:12:41 +0800 | [diff] [blame] | 231 | .mask_separate = BIT(IIO_EV_INFO_VALUE), |
| 232 | }, |
| 233 | { |
| 234 | .type = IIO_EV_TYPE_THRESH, |
| 235 | .mask_separate = BIT(IIO_EV_INFO_ENABLE), |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 236 | }, |
| 237 | }; |
| 238 | |
| 239 | static const struct iio_event_spec apds9960_als_event_spec[] = { |
| 240 | { |
| 241 | .type = IIO_EV_TYPE_THRESH, |
| 242 | .dir = IIO_EV_DIR_RISING, |
Subhajit Ghosh | 5ae3449 | 2022-11-10 18:12:41 +0800 | [diff] [blame] | 243 | .mask_separate = BIT(IIO_EV_INFO_VALUE), |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 244 | }, |
| 245 | { |
| 246 | .type = IIO_EV_TYPE_THRESH, |
| 247 | .dir = IIO_EV_DIR_FALLING, |
Subhajit Ghosh | 5ae3449 | 2022-11-10 18:12:41 +0800 | [diff] [blame] | 248 | .mask_separate = BIT(IIO_EV_INFO_VALUE), |
| 249 | }, |
| 250 | { |
| 251 | .type = IIO_EV_TYPE_THRESH, |
| 252 | .mask_separate = BIT(IIO_EV_INFO_ENABLE), |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 253 | }, |
| 254 | }; |
| 255 | |
| 256 | #define APDS9960_GESTURE_CHANNEL(_dir, _si) { \ |
| 257 | .type = IIO_PROXIMITY, \ |
| 258 | .channel = _si + 1, \ |
| 259 | .scan_index = _si, \ |
| 260 | .indexed = 1, \ |
| 261 | .scan_type = { \ |
| 262 | .sign = 'u', \ |
| 263 | .realbits = 8, \ |
| 264 | .storagebits = 8, \ |
| 265 | }, \ |
| 266 | } |
| 267 | |
| 268 | #define APDS9960_INTENSITY_CHANNEL(_colour) { \ |
| 269 | .type = IIO_INTENSITY, \ |
| 270 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ |
| 271 | .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \ |
| 272 | BIT(IIO_CHAN_INFO_INT_TIME), \ |
| 273 | .channel2 = IIO_MOD_LIGHT_##_colour, \ |
| 274 | .address = APDS9960_REG_ALS_CHANNEL(_colour), \ |
| 275 | .modified = 1, \ |
| 276 | .scan_index = -1, \ |
| 277 | } |
| 278 | |
| 279 | static const unsigned long apds9960_scan_masks[] = {0xf, 0}; |
| 280 | |
| 281 | static const struct iio_chan_spec apds9960_channels[] = { |
| 282 | { |
| 283 | .type = IIO_PROXIMITY, |
| 284 | .address = APDS9960_REG_PDATA, |
| 285 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), |
| 286 | .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), |
| 287 | .channel = 0, |
| 288 | .indexed = 0, |
| 289 | .scan_index = -1, |
| 290 | |
| 291 | .event_spec = apds9960_pxs_event_spec, |
| 292 | .num_event_specs = ARRAY_SIZE(apds9960_pxs_event_spec), |
| 293 | }, |
| 294 | /* Gesture Sensor */ |
| 295 | APDS9960_GESTURE_CHANNEL(UP, 0), |
| 296 | APDS9960_GESTURE_CHANNEL(DOWN, 1), |
| 297 | APDS9960_GESTURE_CHANNEL(LEFT, 2), |
| 298 | APDS9960_GESTURE_CHANNEL(RIGHT, 3), |
| 299 | /* ALS */ |
| 300 | { |
| 301 | .type = IIO_INTENSITY, |
| 302 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), |
| 303 | .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | |
| 304 | BIT(IIO_CHAN_INFO_INT_TIME), |
| 305 | .channel2 = IIO_MOD_LIGHT_CLEAR, |
| 306 | .address = APDS9960_REG_ALS_CHANNEL(CLEAR), |
| 307 | .modified = 1, |
| 308 | .scan_index = -1, |
| 309 | |
| 310 | .event_spec = apds9960_als_event_spec, |
| 311 | .num_event_specs = ARRAY_SIZE(apds9960_als_event_spec), |
| 312 | }, |
| 313 | /* RGB Sensor */ |
| 314 | APDS9960_INTENSITY_CHANNEL(RED), |
| 315 | APDS9960_INTENSITY_CHANNEL(GREEN), |
| 316 | APDS9960_INTENSITY_CHANNEL(BLUE), |
| 317 | }; |
| 318 | |
| 319 | /* integration time in us */ |
Slawomir Stepien | ebe1680 | 2016-04-14 21:36:33 +0200 | [diff] [blame] | 320 | static const int apds9960_int_time[][2] = { |
| 321 | { 28000, 246}, |
| 322 | {100000, 219}, |
| 323 | {200000, 182}, |
| 324 | {700000, 0} |
| 325 | }; |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 326 | |
| 327 | /* gain mapping */ |
| 328 | static const int apds9960_pxs_gain_map[] = {1, 2, 4, 8}; |
| 329 | static const int apds9960_als_gain_map[] = {1, 4, 16, 64}; |
| 330 | |
| 331 | static IIO_CONST_ATTR(proximity_scale_available, "1 2 4 8"); |
| 332 | static IIO_CONST_ATTR(intensity_scale_available, "1 4 16 64"); |
| 333 | static IIO_CONST_ATTR_INT_TIME_AVAIL("0.028 0.1 0.2 0.7"); |
| 334 | |
| 335 | static struct attribute *apds9960_attributes[] = { |
| 336 | &iio_const_attr_proximity_scale_available.dev_attr.attr, |
| 337 | &iio_const_attr_intensity_scale_available.dev_attr.attr, |
| 338 | &iio_const_attr_integration_time_available.dev_attr.attr, |
| 339 | NULL, |
| 340 | }; |
| 341 | |
simran singhal | 3ca437c | 2017-04-01 13:59:10 +0530 | [diff] [blame] | 342 | static const struct attribute_group apds9960_attribute_group = { |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 343 | .attrs = apds9960_attributes, |
| 344 | }; |
| 345 | |
| 346 | static const struct reg_field apds9960_reg_field_int_als = |
| 347 | REG_FIELD(APDS9960_REG_ENABLE, 4, 4); |
| 348 | |
| 349 | static const struct reg_field apds9960_reg_field_int_ges = |
| 350 | REG_FIELD(APDS9960_REG_GCONF_4, 1, 1); |
| 351 | |
| 352 | static const struct reg_field apds9960_reg_field_int_pxs = |
| 353 | REG_FIELD(APDS9960_REG_ENABLE, 5, 5); |
| 354 | |
| 355 | static const struct reg_field apds9960_reg_field_enable_als = |
| 356 | REG_FIELD(APDS9960_REG_ENABLE, 1, 1); |
| 357 | |
| 358 | static const struct reg_field apds9960_reg_field_enable_ges = |
| 359 | REG_FIELD(APDS9960_REG_ENABLE, 6, 6); |
| 360 | |
| 361 | static const struct reg_field apds9960_reg_field_enable_pxs = |
| 362 | REG_FIELD(APDS9960_REG_ENABLE, 2, 2); |
| 363 | |
| 364 | static int apds9960_set_it_time(struct apds9960_data *data, int val2) |
| 365 | { |
| 366 | int ret = -EINVAL; |
| 367 | int idx; |
| 368 | |
| 369 | for (idx = 0; idx < ARRAY_SIZE(apds9960_int_time); idx++) { |
| 370 | if (apds9960_int_time[idx][0] == val2) { |
| 371 | mutex_lock(&data->lock); |
| 372 | ret = regmap_write(data->regmap, APDS9960_REG_ATIME, |
| 373 | apds9960_int_time[idx][1]); |
| 374 | if (!ret) |
| 375 | data->als_adc_int_us = val2; |
| 376 | mutex_unlock(&data->lock); |
| 377 | break; |
| 378 | } |
| 379 | } |
| 380 | |
| 381 | return ret; |
| 382 | } |
| 383 | |
| 384 | static int apds9960_set_pxs_gain(struct apds9960_data *data, int val) |
| 385 | { |
| 386 | int ret = -EINVAL; |
| 387 | int idx; |
| 388 | |
| 389 | for (idx = 0; idx < ARRAY_SIZE(apds9960_pxs_gain_map); idx++) { |
| 390 | if (apds9960_pxs_gain_map[idx] == val) { |
| 391 | /* pxs + gesture gains are mirrored */ |
| 392 | mutex_lock(&data->lock); |
| 393 | ret = regmap_update_bits(data->regmap, |
| 394 | APDS9960_REG_CONTROL, |
| 395 | APDS9960_REG_CONTROL_PGAIN_MASK, |
| 396 | idx << APDS9960_REG_CONTROL_PGAIN_MASK_SHIFT); |
| 397 | if (ret) { |
| 398 | mutex_unlock(&data->lock); |
| 399 | break; |
| 400 | } |
| 401 | |
| 402 | ret = regmap_update_bits(data->regmap, |
Alejandro Concepción Rodríguez | 0aa60ff | 2022-11-06 01:56:51 +0000 | [diff] [blame] | 403 | APDS9960_REG_GCONF_2, |
| 404 | APDS9960_REG_GCONF_2_GGAIN_MASK, |
| 405 | idx << APDS9960_REG_GCONF_2_GGAIN_MASK_SHIFT); |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 406 | if (!ret) |
| 407 | data->pxs_gain = idx; |
| 408 | mutex_unlock(&data->lock); |
| 409 | break; |
| 410 | } |
| 411 | } |
| 412 | |
| 413 | return ret; |
| 414 | } |
| 415 | |
| 416 | static int apds9960_set_als_gain(struct apds9960_data *data, int val) |
| 417 | { |
| 418 | int ret = -EINVAL; |
| 419 | int idx; |
| 420 | |
| 421 | for (idx = 0; idx < ARRAY_SIZE(apds9960_als_gain_map); idx++) { |
| 422 | if (apds9960_als_gain_map[idx] == val) { |
| 423 | mutex_lock(&data->lock); |
| 424 | ret = regmap_update_bits(data->regmap, |
| 425 | APDS9960_REG_CONTROL, |
| 426 | APDS9960_REG_CONTROL_AGAIN_MASK, idx); |
| 427 | if (!ret) |
| 428 | data->als_gain = idx; |
| 429 | mutex_unlock(&data->lock); |
| 430 | break; |
| 431 | } |
| 432 | } |
| 433 | |
| 434 | return ret; |
| 435 | } |
| 436 | |
| 437 | #ifdef CONFIG_PM |
| 438 | static int apds9960_set_power_state(struct apds9960_data *data, bool on) |
| 439 | { |
| 440 | struct device *dev = &data->client->dev; |
| 441 | int ret = 0; |
| 442 | |
| 443 | mutex_lock(&data->lock); |
| 444 | |
| 445 | if (on) { |
| 446 | int suspended; |
| 447 | |
| 448 | suspended = pm_runtime_suspended(dev); |
| 449 | ret = pm_runtime_get_sync(dev); |
| 450 | |
| 451 | /* Allow one integration cycle before allowing a reading */ |
| 452 | if (suspended) |
| 453 | usleep_range(data->als_adc_int_us, |
| 454 | APDS9960_MAX_INT_TIME_IN_US); |
| 455 | } else { |
Matt Ranostay | 8386c275 | 2015-11-07 20:21:28 -0800 | [diff] [blame] | 456 | pm_runtime_mark_last_busy(dev); |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 457 | ret = pm_runtime_put_autosuspend(dev); |
| 458 | } |
| 459 | |
| 460 | mutex_unlock(&data->lock); |
| 461 | |
| 462 | return ret; |
| 463 | } |
| 464 | #else |
| 465 | static int apds9960_set_power_state(struct apds9960_data *data, bool on) |
| 466 | { |
| 467 | return 0; |
| 468 | } |
| 469 | #endif |
| 470 | |
| 471 | static int apds9960_read_raw(struct iio_dev *indio_dev, |
| 472 | struct iio_chan_spec const *chan, |
| 473 | int *val, int *val2, long mask) |
| 474 | { |
| 475 | struct apds9960_data *data = iio_priv(indio_dev); |
Jonathan Cameron | 801ab33 | 2015-09-23 20:36:02 +0100 | [diff] [blame] | 476 | __le16 buf; |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 477 | int ret = -EINVAL; |
| 478 | |
| 479 | if (data->gesture_mode_running) |
| 480 | return -EBUSY; |
| 481 | |
| 482 | switch (mask) { |
| 483 | case IIO_CHAN_INFO_RAW: |
| 484 | apds9960_set_power_state(data, true); |
| 485 | switch (chan->type) { |
| 486 | case IIO_PROXIMITY: |
| 487 | ret = regmap_read(data->regmap, chan->address, val); |
| 488 | if (!ret) |
| 489 | ret = IIO_VAL_INT; |
| 490 | break; |
| 491 | case IIO_INTENSITY: |
| 492 | ret = regmap_bulk_read(data->regmap, chan->address, |
| 493 | &buf, 2); |
Dan Carpenter | f211225 | 2016-04-22 13:04:14 +0300 | [diff] [blame] | 494 | if (!ret) { |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 495 | ret = IIO_VAL_INT; |
Dan Carpenter | f211225 | 2016-04-22 13:04:14 +0300 | [diff] [blame] | 496 | *val = le16_to_cpu(buf); |
| 497 | } |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 498 | break; |
| 499 | default: |
| 500 | ret = -EINVAL; |
| 501 | } |
| 502 | apds9960_set_power_state(data, false); |
| 503 | break; |
| 504 | case IIO_CHAN_INFO_INT_TIME: |
| 505 | /* RGB + ALS sensors only have integration time */ |
| 506 | mutex_lock(&data->lock); |
| 507 | switch (chan->type) { |
| 508 | case IIO_INTENSITY: |
| 509 | *val = 0; |
| 510 | *val2 = data->als_adc_int_us; |
| 511 | ret = IIO_VAL_INT_PLUS_MICRO; |
| 512 | break; |
| 513 | default: |
| 514 | ret = -EINVAL; |
| 515 | } |
| 516 | mutex_unlock(&data->lock); |
| 517 | break; |
| 518 | case IIO_CHAN_INFO_SCALE: |
| 519 | mutex_lock(&data->lock); |
| 520 | switch (chan->type) { |
| 521 | case IIO_PROXIMITY: |
| 522 | *val = apds9960_pxs_gain_map[data->pxs_gain]; |
| 523 | ret = IIO_VAL_INT; |
| 524 | break; |
| 525 | case IIO_INTENSITY: |
| 526 | *val = apds9960_als_gain_map[data->als_gain]; |
| 527 | ret = IIO_VAL_INT; |
| 528 | break; |
| 529 | default: |
| 530 | ret = -EINVAL; |
| 531 | } |
| 532 | mutex_unlock(&data->lock); |
| 533 | break; |
| 534 | } |
| 535 | |
| 536 | return ret; |
| 537 | }; |
| 538 | |
| 539 | static int apds9960_write_raw(struct iio_dev *indio_dev, |
| 540 | struct iio_chan_spec const *chan, |
| 541 | int val, int val2, long mask) |
| 542 | { |
| 543 | struct apds9960_data *data = iio_priv(indio_dev); |
| 544 | |
| 545 | switch (mask) { |
| 546 | case IIO_CHAN_INFO_INT_TIME: |
| 547 | /* RGB + ALS sensors only have int time */ |
| 548 | switch (chan->type) { |
| 549 | case IIO_INTENSITY: |
| 550 | if (val != 0) |
| 551 | return -EINVAL; |
| 552 | return apds9960_set_it_time(data, val2); |
| 553 | default: |
| 554 | return -EINVAL; |
| 555 | } |
| 556 | case IIO_CHAN_INFO_SCALE: |
| 557 | if (val2 != 0) |
| 558 | return -EINVAL; |
| 559 | switch (chan->type) { |
| 560 | case IIO_PROXIMITY: |
| 561 | return apds9960_set_pxs_gain(data, val); |
| 562 | case IIO_INTENSITY: |
| 563 | return apds9960_set_als_gain(data, val); |
| 564 | default: |
| 565 | return -EINVAL; |
| 566 | } |
| 567 | default: |
| 568 | return -EINVAL; |
Tom Rix | 691f453 | 2020-10-27 13:14:36 -0700 | [diff] [blame] | 569 | } |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 570 | |
| 571 | return 0; |
| 572 | } |
| 573 | |
| 574 | static inline int apds9960_get_thres_reg(const struct iio_chan_spec *chan, |
| 575 | enum iio_event_direction dir, |
| 576 | u8 *reg) |
| 577 | { |
| 578 | switch (dir) { |
| 579 | case IIO_EV_DIR_RISING: |
| 580 | switch (chan->type) { |
| 581 | case IIO_PROXIMITY: |
| 582 | *reg = APDS9960_REG_PIHT; |
| 583 | break; |
| 584 | case IIO_INTENSITY: |
| 585 | *reg = APDS9960_REG_AIHTL; |
| 586 | break; |
| 587 | default: |
| 588 | return -EINVAL; |
| 589 | } |
| 590 | break; |
| 591 | case IIO_EV_DIR_FALLING: |
| 592 | switch (chan->type) { |
| 593 | case IIO_PROXIMITY: |
| 594 | *reg = APDS9960_REG_PILT; |
| 595 | break; |
| 596 | case IIO_INTENSITY: |
| 597 | *reg = APDS9960_REG_AILTL; |
| 598 | break; |
| 599 | default: |
| 600 | return -EINVAL; |
| 601 | } |
| 602 | break; |
| 603 | default: |
| 604 | return -EINVAL; |
| 605 | } |
| 606 | |
| 607 | return 0; |
| 608 | } |
| 609 | |
| 610 | static int apds9960_read_event(struct iio_dev *indio_dev, |
| 611 | const struct iio_chan_spec *chan, |
| 612 | enum iio_event_type type, |
| 613 | enum iio_event_direction dir, |
| 614 | enum iio_event_info info, |
| 615 | int *val, int *val2) |
| 616 | { |
| 617 | u8 reg; |
Jonathan Cameron | 801ab33 | 2015-09-23 20:36:02 +0100 | [diff] [blame] | 618 | __le16 buf; |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 619 | int ret = 0; |
| 620 | struct apds9960_data *data = iio_priv(indio_dev); |
| 621 | |
| 622 | if (info != IIO_EV_INFO_VALUE) |
| 623 | return -EINVAL; |
| 624 | |
| 625 | ret = apds9960_get_thres_reg(chan, dir, ®); |
| 626 | if (ret < 0) |
| 627 | return ret; |
| 628 | |
| 629 | if (chan->type == IIO_PROXIMITY) { |
| 630 | ret = regmap_read(data->regmap, reg, val); |
| 631 | if (ret < 0) |
| 632 | return ret; |
| 633 | } else if (chan->type == IIO_INTENSITY) { |
| 634 | ret = regmap_bulk_read(data->regmap, reg, &buf, 2); |
| 635 | if (ret < 0) |
| 636 | return ret; |
| 637 | *val = le16_to_cpu(buf); |
| 638 | } else |
| 639 | return -EINVAL; |
| 640 | |
| 641 | *val2 = 0; |
| 642 | |
| 643 | return IIO_VAL_INT; |
| 644 | } |
| 645 | |
| 646 | static int apds9960_write_event(struct iio_dev *indio_dev, |
| 647 | const struct iio_chan_spec *chan, |
| 648 | enum iio_event_type type, |
| 649 | enum iio_event_direction dir, |
| 650 | enum iio_event_info info, |
| 651 | int val, int val2) |
| 652 | { |
| 653 | u8 reg; |
Jonathan Cameron | 801ab33 | 2015-09-23 20:36:02 +0100 | [diff] [blame] | 654 | __le16 buf; |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 655 | int ret = 0; |
| 656 | struct apds9960_data *data = iio_priv(indio_dev); |
| 657 | |
| 658 | if (info != IIO_EV_INFO_VALUE) |
| 659 | return -EINVAL; |
| 660 | |
| 661 | ret = apds9960_get_thres_reg(chan, dir, ®); |
| 662 | if (ret < 0) |
| 663 | return ret; |
| 664 | |
| 665 | if (chan->type == IIO_PROXIMITY) { |
| 666 | if (val < 0 || val > APDS9960_MAX_PXS_THRES_VAL) |
| 667 | return -EINVAL; |
| 668 | ret = regmap_write(data->regmap, reg, val); |
| 669 | if (ret < 0) |
| 670 | return ret; |
| 671 | } else if (chan->type == IIO_INTENSITY) { |
| 672 | if (val < 0 || val > APDS9960_MAX_ALS_THRES_VAL) |
| 673 | return -EINVAL; |
| 674 | buf = cpu_to_le16(val); |
| 675 | ret = regmap_bulk_write(data->regmap, reg, &buf, 2); |
| 676 | if (ret < 0) |
| 677 | return ret; |
| 678 | } else |
| 679 | return -EINVAL; |
| 680 | |
| 681 | return 0; |
| 682 | } |
| 683 | |
| 684 | static int apds9960_read_event_config(struct iio_dev *indio_dev, |
| 685 | const struct iio_chan_spec *chan, |
| 686 | enum iio_event_type type, |
| 687 | enum iio_event_direction dir) |
| 688 | { |
| 689 | struct apds9960_data *data = iio_priv(indio_dev); |
| 690 | |
| 691 | switch (chan->type) { |
| 692 | case IIO_PROXIMITY: |
| 693 | return data->pxs_int; |
| 694 | case IIO_INTENSITY: |
| 695 | return data->als_int; |
| 696 | default: |
| 697 | return -EINVAL; |
| 698 | } |
| 699 | |
| 700 | return 0; |
| 701 | } |
| 702 | |
| 703 | static int apds9960_write_event_config(struct iio_dev *indio_dev, |
| 704 | const struct iio_chan_spec *chan, |
| 705 | enum iio_event_type type, |
| 706 | enum iio_event_direction dir, |
| 707 | int state) |
| 708 | { |
| 709 | struct apds9960_data *data = iio_priv(indio_dev); |
| 710 | int ret; |
| 711 | |
| 712 | state = !!state; |
| 713 | |
| 714 | switch (chan->type) { |
| 715 | case IIO_PROXIMITY: |
| 716 | if (data->pxs_int == state) |
| 717 | return -EINVAL; |
| 718 | |
| 719 | ret = regmap_field_write(data->reg_int_pxs, state); |
| 720 | if (ret) |
| 721 | return ret; |
| 722 | data->pxs_int = state; |
| 723 | apds9960_set_power_state(data, state); |
| 724 | break; |
| 725 | case IIO_INTENSITY: |
| 726 | if (data->als_int == state) |
| 727 | return -EINVAL; |
| 728 | |
| 729 | ret = regmap_field_write(data->reg_int_als, state); |
| 730 | if (ret) |
| 731 | return ret; |
| 732 | data->als_int = state; |
| 733 | apds9960_set_power_state(data, state); |
| 734 | break; |
| 735 | default: |
| 736 | return -EINVAL; |
| 737 | } |
| 738 | |
| 739 | return 0; |
| 740 | } |
| 741 | |
| 742 | static const struct iio_info apds9960_info = { |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 743 | .attrs = &apds9960_attribute_group, |
| 744 | .read_raw = apds9960_read_raw, |
| 745 | .write_raw = apds9960_write_raw, |
| 746 | .read_event_value = apds9960_read_event, |
| 747 | .write_event_value = apds9960_write_event, |
| 748 | .read_event_config = apds9960_read_event_config, |
| 749 | .write_event_config = apds9960_write_event_config, |
| 750 | |
| 751 | }; |
| 752 | |
| 753 | static inline int apds9660_fifo_is_empty(struct apds9960_data *data) |
| 754 | { |
| 755 | int cnt; |
| 756 | int ret; |
| 757 | |
| 758 | ret = regmap_read(data->regmap, APDS9960_REG_GFLVL, &cnt); |
| 759 | if (ret) |
| 760 | return ret; |
| 761 | |
| 762 | return cnt; |
| 763 | } |
| 764 | |
| 765 | static void apds9960_read_gesture_fifo(struct apds9960_data *data) |
| 766 | { |
| 767 | int ret, cnt = 0; |
| 768 | |
| 769 | mutex_lock(&data->lock); |
| 770 | data->gesture_mode_running = 1; |
| 771 | |
Matt Ranostay | 655048a | 2016-03-17 20:48:07 -0700 | [diff] [blame] | 772 | while (cnt || (cnt = apds9660_fifo_is_empty(data) > 0)) { |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 773 | ret = regmap_bulk_read(data->regmap, APDS9960_REG_GFIFO_BASE, |
| 774 | &data->buffer, 4); |
| 775 | |
| 776 | if (ret) |
| 777 | goto err_read; |
| 778 | |
| 779 | iio_push_to_buffers(data->indio_dev, data->buffer); |
Matt Ranostay | 655048a | 2016-03-17 20:48:07 -0700 | [diff] [blame] | 780 | cnt--; |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 781 | } |
| 782 | |
| 783 | err_read: |
| 784 | data->gesture_mode_running = 0; |
| 785 | mutex_unlock(&data->lock); |
| 786 | } |
| 787 | |
| 788 | static irqreturn_t apds9960_interrupt_handler(int irq, void *private) |
| 789 | { |
| 790 | struct iio_dev *indio_dev = private; |
| 791 | struct apds9960_data *data = iio_priv(indio_dev); |
| 792 | int ret, status; |
| 793 | |
| 794 | ret = regmap_read(data->regmap, APDS9960_REG_STATUS, &status); |
| 795 | if (ret < 0) { |
| 796 | dev_err(&data->client->dev, "irq status reg read failed\n"); |
| 797 | return IRQ_HANDLED; |
| 798 | } |
| 799 | |
| 800 | if ((status & APDS9960_REG_STATUS_ALS_INT) && data->als_int) { |
| 801 | iio_push_event(indio_dev, |
| 802 | IIO_UNMOD_EVENT_CODE(IIO_INTENSITY, 0, |
| 803 | IIO_EV_TYPE_THRESH, |
| 804 | IIO_EV_DIR_EITHER), |
Gregor Boirie | bc2b7da | 2016-03-09 19:05:49 +0100 | [diff] [blame] | 805 | iio_get_time_ns(indio_dev)); |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 806 | regmap_write(data->regmap, APDS9960_REG_CICLEAR, 1); |
| 807 | } |
| 808 | |
| 809 | if ((status & APDS9960_REG_STATUS_PS_INT) && data->pxs_int) { |
| 810 | iio_push_event(indio_dev, |
| 811 | IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 0, |
| 812 | IIO_EV_TYPE_THRESH, |
| 813 | IIO_EV_DIR_EITHER), |
Gregor Boirie | bc2b7da | 2016-03-09 19:05:49 +0100 | [diff] [blame] | 814 | iio_get_time_ns(indio_dev)); |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 815 | regmap_write(data->regmap, APDS9960_REG_PICLEAR, 1); |
| 816 | } |
| 817 | |
| 818 | if (status & APDS9960_REG_STATUS_GINT) |
| 819 | apds9960_read_gesture_fifo(data); |
| 820 | |
| 821 | return IRQ_HANDLED; |
| 822 | } |
| 823 | |
| 824 | static int apds9960_set_powermode(struct apds9960_data *data, bool state) |
| 825 | { |
| 826 | return regmap_update_bits(data->regmap, APDS9960_REG_ENABLE, 1, state); |
| 827 | } |
| 828 | |
| 829 | static int apds9960_buffer_postenable(struct iio_dev *indio_dev) |
| 830 | { |
| 831 | struct apds9960_data *data = iio_priv(indio_dev); |
| 832 | int ret; |
| 833 | |
| 834 | ret = regmap_field_write(data->reg_int_ges, 1); |
| 835 | if (ret) |
| 836 | return ret; |
| 837 | |
| 838 | ret = regmap_field_write(data->reg_enable_ges, 1); |
| 839 | if (ret) |
| 840 | return ret; |
| 841 | |
| 842 | pm_runtime_get_sync(&data->client->dev); |
| 843 | |
| 844 | return 0; |
| 845 | } |
| 846 | |
| 847 | static int apds9960_buffer_predisable(struct iio_dev *indio_dev) |
| 848 | { |
| 849 | struct apds9960_data *data = iio_priv(indio_dev); |
| 850 | int ret; |
| 851 | |
| 852 | ret = regmap_field_write(data->reg_enable_ges, 0); |
| 853 | if (ret) |
| 854 | return ret; |
| 855 | |
| 856 | ret = regmap_field_write(data->reg_int_ges, 0); |
| 857 | if (ret) |
| 858 | return ret; |
| 859 | |
| 860 | pm_runtime_put_autosuspend(&data->client->dev); |
| 861 | |
| 862 | return 0; |
| 863 | } |
| 864 | |
| 865 | static const struct iio_buffer_setup_ops apds9960_buffer_setup_ops = { |
| 866 | .postenable = apds9960_buffer_postenable, |
| 867 | .predisable = apds9960_buffer_predisable, |
| 868 | }; |
| 869 | |
| 870 | static int apds9960_regfield_init(struct apds9960_data *data) |
| 871 | { |
| 872 | struct device *dev = &data->client->dev; |
| 873 | struct regmap *regmap = data->regmap; |
| 874 | |
| 875 | data->reg_int_als = devm_regmap_field_alloc(dev, regmap, |
| 876 | apds9960_reg_field_int_als); |
| 877 | if (IS_ERR(data->reg_int_als)) { |
| 878 | dev_err(dev, "INT ALS reg field init failed\n"); |
| 879 | return PTR_ERR(data->reg_int_als); |
| 880 | } |
| 881 | |
| 882 | data->reg_int_ges = devm_regmap_field_alloc(dev, regmap, |
| 883 | apds9960_reg_field_int_ges); |
| 884 | if (IS_ERR(data->reg_int_ges)) { |
| 885 | dev_err(dev, "INT gesture reg field init failed\n"); |
| 886 | return PTR_ERR(data->reg_int_ges); |
| 887 | } |
| 888 | |
| 889 | data->reg_int_pxs = devm_regmap_field_alloc(dev, regmap, |
| 890 | apds9960_reg_field_int_pxs); |
| 891 | if (IS_ERR(data->reg_int_pxs)) { |
| 892 | dev_err(dev, "INT pxs reg field init failed\n"); |
| 893 | return PTR_ERR(data->reg_int_pxs); |
| 894 | } |
| 895 | |
| 896 | data->reg_enable_als = devm_regmap_field_alloc(dev, regmap, |
| 897 | apds9960_reg_field_enable_als); |
| 898 | if (IS_ERR(data->reg_enable_als)) { |
| 899 | dev_err(dev, "Enable ALS reg field init failed\n"); |
| 900 | return PTR_ERR(data->reg_enable_als); |
| 901 | } |
| 902 | |
| 903 | data->reg_enable_ges = devm_regmap_field_alloc(dev, regmap, |
| 904 | apds9960_reg_field_enable_ges); |
| 905 | if (IS_ERR(data->reg_enable_ges)) { |
| 906 | dev_err(dev, "Enable gesture reg field init failed\n"); |
| 907 | return PTR_ERR(data->reg_enable_ges); |
| 908 | } |
| 909 | |
| 910 | data->reg_enable_pxs = devm_regmap_field_alloc(dev, regmap, |
| 911 | apds9960_reg_field_enable_pxs); |
| 912 | if (IS_ERR(data->reg_enable_pxs)) { |
| 913 | dev_err(dev, "Enable PXS reg field init failed\n"); |
| 914 | return PTR_ERR(data->reg_enable_pxs); |
| 915 | } |
| 916 | |
| 917 | return 0; |
| 918 | } |
| 919 | |
| 920 | static int apds9960_chip_init(struct apds9960_data *data) |
| 921 | { |
| 922 | int ret; |
| 923 | |
| 924 | /* Default IT for ALS of 28 ms */ |
| 925 | ret = apds9960_set_it_time(data, 28000); |
| 926 | if (ret) |
| 927 | return ret; |
| 928 | |
| 929 | /* Ensure gesture interrupt is OFF */ |
| 930 | ret = regmap_field_write(data->reg_int_ges, 0); |
| 931 | if (ret) |
| 932 | return ret; |
| 933 | |
| 934 | /* Disable gesture sensor, since polling is useless from user-space */ |
| 935 | ret = regmap_field_write(data->reg_enable_ges, 0); |
| 936 | if (ret) |
| 937 | return ret; |
| 938 | |
| 939 | /* Ensure proximity interrupt is OFF */ |
| 940 | ret = regmap_field_write(data->reg_int_pxs, 0); |
| 941 | if (ret) |
| 942 | return ret; |
| 943 | |
| 944 | /* Enable proximity sensor for polling */ |
| 945 | ret = regmap_field_write(data->reg_enable_pxs, 1); |
| 946 | if (ret) |
| 947 | return ret; |
| 948 | |
| 949 | /* Ensure ALS interrupt is OFF */ |
| 950 | ret = regmap_field_write(data->reg_int_als, 0); |
| 951 | if (ret) |
| 952 | return ret; |
| 953 | |
| 954 | /* Enable ALS sensor for polling */ |
| 955 | ret = regmap_field_write(data->reg_enable_als, 1); |
| 956 | if (ret) |
| 957 | return ret; |
| 958 | /* |
| 959 | * When enabled trigger an interrupt after 3 readings |
| 960 | * outside threshold for ALS + PXS |
| 961 | */ |
| 962 | ret = regmap_write(data->regmap, APDS9960_REG_PERS, |
| 963 | APDS9960_DEFAULT_PERS); |
| 964 | if (ret) |
| 965 | return ret; |
| 966 | |
| 967 | /* |
| 968 | * Wait for 4 event outside gesture threshold to prevent interrupt |
| 969 | * flooding. |
| 970 | */ |
| 971 | ret = regmap_update_bits(data->regmap, APDS9960_REG_GCONF_1, |
| 972 | APDS9960_REG_GCONF_1_GFIFO_THRES_MASK, |
| 973 | BIT(0) << APDS9960_REG_GCONF_1_GFIFO_THRES_MASK_SHIFT); |
| 974 | if (ret) |
| 975 | return ret; |
| 976 | |
| 977 | /* Default ENTER and EXIT thresholds for the GESTURE engine. */ |
| 978 | ret = regmap_write(data->regmap, APDS9960_REG_GPENTH, |
| 979 | APDS9960_DEFAULT_GPENTH); |
| 980 | if (ret) |
| 981 | return ret; |
| 982 | |
| 983 | ret = regmap_write(data->regmap, APDS9960_REG_GEXTH, |
| 984 | APDS9960_DEFAULT_GEXTH); |
| 985 | if (ret) |
| 986 | return ret; |
| 987 | |
kbuild test robot | ebe5c54 | 2015-09-22 10:21:48 +0800 | [diff] [blame] | 988 | return apds9960_set_powermode(data, 1); |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 989 | } |
| 990 | |
Uwe Kleine-König | 783964a | 2022-11-18 23:37:31 +0100 | [diff] [blame] | 991 | static int apds9960_probe(struct i2c_client *client) |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 992 | { |
| 993 | struct apds9960_data *data; |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 994 | struct iio_dev *indio_dev; |
| 995 | int ret; |
| 996 | |
| 997 | indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); |
| 998 | if (!indio_dev) |
| 999 | return -ENOMEM; |
| 1000 | |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 1001 | indio_dev->info = &apds9960_info; |
| 1002 | indio_dev->name = APDS9960_DRV_NAME; |
| 1003 | indio_dev->channels = apds9960_channels; |
| 1004 | indio_dev->num_channels = ARRAY_SIZE(apds9960_channels); |
| 1005 | indio_dev->available_scan_masks = apds9960_scan_masks; |
Alexandru Ardelean | 17395ce | 2021-02-15 12:40:22 +0200 | [diff] [blame] | 1006 | indio_dev->modes = INDIO_DIRECT_MODE; |
| 1007 | |
| 1008 | ret = devm_iio_kfifo_buffer_setup(&client->dev, indio_dev, |
Alexandru Ardelean | 17395ce | 2021-02-15 12:40:22 +0200 | [diff] [blame] | 1009 | &apds9960_buffer_setup_ops); |
| 1010 | if (ret) |
| 1011 | return ret; |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 1012 | |
| 1013 | data = iio_priv(indio_dev); |
| 1014 | i2c_set_clientdata(client, indio_dev); |
| 1015 | |
| 1016 | data->regmap = devm_regmap_init_i2c(client, &apds9960_regmap_config); |
| 1017 | if (IS_ERR(data->regmap)) { |
| 1018 | dev_err(&client->dev, "regmap initialization failed.\n"); |
| 1019 | return PTR_ERR(data->regmap); |
| 1020 | } |
| 1021 | |
| 1022 | data->client = client; |
| 1023 | data->indio_dev = indio_dev; |
| 1024 | mutex_init(&data->lock); |
| 1025 | |
| 1026 | ret = pm_runtime_set_active(&client->dev); |
| 1027 | if (ret) |
| 1028 | goto error_power_down; |
| 1029 | |
| 1030 | pm_runtime_enable(&client->dev); |
| 1031 | pm_runtime_set_autosuspend_delay(&client->dev, 5000); |
| 1032 | pm_runtime_use_autosuspend(&client->dev); |
| 1033 | |
| 1034 | apds9960_set_power_state(data, true); |
| 1035 | |
| 1036 | ret = apds9960_regfield_init(data); |
| 1037 | if (ret) |
| 1038 | goto error_power_down; |
| 1039 | |
| 1040 | ret = apds9960_chip_init(data); |
| 1041 | if (ret) |
| 1042 | goto error_power_down; |
| 1043 | |
| 1044 | if (client->irq <= 0) { |
| 1045 | dev_err(&client->dev, "no valid irq defined\n"); |
| 1046 | ret = -EINVAL; |
| 1047 | goto error_power_down; |
| 1048 | } |
| 1049 | ret = devm_request_threaded_irq(&client->dev, client->irq, |
| 1050 | NULL, apds9960_interrupt_handler, |
| 1051 | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, |
| 1052 | "apds9960_event", |
| 1053 | indio_dev); |
| 1054 | if (ret) { |
| 1055 | dev_err(&client->dev, "request irq (%d) failed\n", client->irq); |
| 1056 | goto error_power_down; |
| 1057 | } |
| 1058 | |
| 1059 | ret = iio_device_register(indio_dev); |
| 1060 | if (ret) |
| 1061 | goto error_power_down; |
| 1062 | |
| 1063 | apds9960_set_power_state(data, false); |
| 1064 | |
| 1065 | return 0; |
| 1066 | |
| 1067 | error_power_down: |
| 1068 | apds9960_set_power_state(data, false); |
| 1069 | |
| 1070 | return ret; |
| 1071 | } |
| 1072 | |
Uwe Kleine-König | ed5c2f5 | 2022-08-15 10:02:30 +0200 | [diff] [blame] | 1073 | static void apds9960_remove(struct i2c_client *client) |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 1074 | { |
| 1075 | struct iio_dev *indio_dev = i2c_get_clientdata(client); |
| 1076 | struct apds9960_data *data = iio_priv(indio_dev); |
| 1077 | |
| 1078 | iio_device_unregister(indio_dev); |
| 1079 | pm_runtime_disable(&client->dev); |
| 1080 | pm_runtime_set_suspended(&client->dev); |
| 1081 | apds9960_set_powermode(data, 0); |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 1082 | } |
| 1083 | |
| 1084 | #ifdef CONFIG_PM |
| 1085 | static int apds9960_runtime_suspend(struct device *dev) |
| 1086 | { |
| 1087 | struct apds9960_data *data = |
| 1088 | iio_priv(i2c_get_clientdata(to_i2c_client(dev))); |
| 1089 | |
| 1090 | return apds9960_set_powermode(data, 0); |
| 1091 | } |
| 1092 | |
| 1093 | static int apds9960_runtime_resume(struct device *dev) |
| 1094 | { |
| 1095 | struct apds9960_data *data = |
| 1096 | iio_priv(i2c_get_clientdata(to_i2c_client(dev))); |
| 1097 | |
| 1098 | return apds9960_set_powermode(data, 1); |
| 1099 | } |
| 1100 | #endif |
| 1101 | |
| 1102 | static const struct dev_pm_ops apds9960_pm_ops = { |
Matt Ranostay | d454ae2 | 2017-04-12 19:16:57 -0700 | [diff] [blame] | 1103 | SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, |
| 1104 | pm_runtime_force_resume) |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 1105 | SET_RUNTIME_PM_OPS(apds9960_runtime_suspend, |
| 1106 | apds9960_runtime_resume, NULL) |
| 1107 | }; |
| 1108 | |
| 1109 | static const struct i2c_device_id apds9960_id[] = { |
| 1110 | { "apds9960", 0 }, |
| 1111 | {} |
| 1112 | }; |
| 1113 | MODULE_DEVICE_TABLE(i2c, apds9960_id); |
| 1114 | |
Max Leiter | b9968e1 | 2020-12-19 17:50:55 -0800 | [diff] [blame] | 1115 | static const struct acpi_device_id apds9960_acpi_match[] = { |
| 1116 | { "MSHW0184" }, |
| 1117 | { } |
| 1118 | }; |
| 1119 | MODULE_DEVICE_TABLE(acpi, apds9960_acpi_match); |
| 1120 | |
Javier Martinez Canillas | ae4e825 | 2017-03-15 01:44:58 -0300 | [diff] [blame] | 1121 | static const struct of_device_id apds9960_of_match[] = { |
| 1122 | { .compatible = "avago,apds9960" }, |
| 1123 | { } |
| 1124 | }; |
| 1125 | MODULE_DEVICE_TABLE(of, apds9960_of_match); |
| 1126 | |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 1127 | static struct i2c_driver apds9960_driver = { |
| 1128 | .driver = { |
| 1129 | .name = APDS9960_DRV_NAME, |
Javier Martinez Canillas | ae4e825 | 2017-03-15 01:44:58 -0300 | [diff] [blame] | 1130 | .of_match_table = apds9960_of_match, |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 1131 | .pm = &apds9960_pm_ops, |
Max Leiter | b9968e1 | 2020-12-19 17:50:55 -0800 | [diff] [blame] | 1132 | .acpi_match_table = apds9960_acpi_match, |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 1133 | }, |
Uwe Kleine-König | 783964a | 2022-11-18 23:37:31 +0100 | [diff] [blame] | 1134 | .probe_new = apds9960_probe, |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 1135 | .remove = apds9960_remove, |
| 1136 | .id_table = apds9960_id, |
| 1137 | }; |
| 1138 | module_i2c_driver(apds9960_driver); |
| 1139 | |
Matt Ranostay | d6ad805 | 2018-02-17 21:36:46 -0800 | [diff] [blame] | 1140 | MODULE_AUTHOR("Matt Ranostay <matt.ranostay@konsulko.com>"); |
Christophe JAILLET | 50e5bae | 2019-07-21 12:49:18 +0200 | [diff] [blame] | 1141 | MODULE_DESCRIPTION("APDS9960 Gesture/RGB/ALS/Proximity sensor"); |
Matt Ranostay | aff268c | 2015-08-17 10:30:16 -0700 | [diff] [blame] | 1142 | MODULE_LICENSE("GPL"); |