Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1 | /* |
| 2 | * BMG160 Gyro Sensor driver |
| 3 | * Copyright (c) 2014, Intel Corporation. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms and conditions of the GNU General Public License, |
| 7 | * version 2, as published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 12 | * more details. |
| 13 | */ |
| 14 | |
| 15 | #include <linux/module.h> |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 16 | #include <linux/interrupt.h> |
| 17 | #include <linux/delay.h> |
| 18 | #include <linux/slab.h> |
| 19 | #include <linux/acpi.h> |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 20 | #include <linux/pm.h> |
| 21 | #include <linux/pm_runtime.h> |
| 22 | #include <linux/iio/iio.h> |
| 23 | #include <linux/iio/sysfs.h> |
| 24 | #include <linux/iio/buffer.h> |
| 25 | #include <linux/iio/trigger.h> |
| 26 | #include <linux/iio/events.h> |
| 27 | #include <linux/iio/trigger_consumer.h> |
| 28 | #include <linux/iio/triggered_buffer.h> |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 29 | #include <linux/regmap.h> |
Quentin Schulz | 71b44ef | 2017-03-21 16:52:14 +0100 | [diff] [blame] | 30 | #include <linux/delay.h> |
Markus Pargmann | 1342645 | 2015-08-19 14:12:45 +0200 | [diff] [blame] | 31 | #include "bmg160.h" |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 32 | |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 33 | #define BMG160_IRQ_NAME "bmg160_event" |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 34 | |
| 35 | #define BMG160_REG_CHIP_ID 0x00 |
| 36 | #define BMG160_CHIP_ID_VAL 0x0F |
| 37 | |
| 38 | #define BMG160_REG_PMU_LPW 0x11 |
| 39 | #define BMG160_MODE_NORMAL 0x00 |
| 40 | #define BMG160_MODE_DEEP_SUSPEND 0x20 |
| 41 | #define BMG160_MODE_SUSPEND 0x80 |
| 42 | |
| 43 | #define BMG160_REG_RANGE 0x0F |
| 44 | |
| 45 | #define BMG160_RANGE_2000DPS 0 |
| 46 | #define BMG160_RANGE_1000DPS 1 |
| 47 | #define BMG160_RANGE_500DPS 2 |
| 48 | #define BMG160_RANGE_250DPS 3 |
| 49 | #define BMG160_RANGE_125DPS 4 |
| 50 | |
| 51 | #define BMG160_REG_PMU_BW 0x10 |
| 52 | #define BMG160_NO_FILTER 0 |
| 53 | #define BMG160_DEF_BW 100 |
Steffen Trumtrar | bf61f5d | 2016-04-21 12:49:00 +0200 | [diff] [blame] | 54 | #define BMG160_REG_PMU_BW_RES BIT(7) |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 55 | |
Quentin Schulz | 71b44ef | 2017-03-21 16:52:14 +0100 | [diff] [blame] | 56 | #define BMG160_GYRO_REG_RESET 0x14 |
| 57 | #define BMG160_GYRO_RESET_VAL 0xb6 |
| 58 | |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 59 | #define BMG160_REG_INT_MAP_0 0x17 |
| 60 | #define BMG160_INT_MAP_0_BIT_ANY BIT(1) |
| 61 | |
| 62 | #define BMG160_REG_INT_MAP_1 0x18 |
| 63 | #define BMG160_INT_MAP_1_BIT_NEW_DATA BIT(0) |
| 64 | |
| 65 | #define BMG160_REG_INT_RST_LATCH 0x21 |
| 66 | #define BMG160_INT_MODE_LATCH_RESET 0x80 |
| 67 | #define BMG160_INT_MODE_LATCH_INT 0x0F |
| 68 | #define BMG160_INT_MODE_NON_LATCH_INT 0x00 |
| 69 | |
| 70 | #define BMG160_REG_INT_EN_0 0x15 |
| 71 | #define BMG160_DATA_ENABLE_INT BIT(7) |
| 72 | |
Srinivas Pandruvada | 5af6b30 | 2014-10-10 20:33:26 -0700 | [diff] [blame] | 73 | #define BMG160_REG_INT_EN_1 0x16 |
| 74 | #define BMG160_INT1_BIT_OD BIT(1) |
| 75 | |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 76 | #define BMG160_REG_XOUT_L 0x02 |
| 77 | #define BMG160_AXIS_TO_REG(axis) (BMG160_REG_XOUT_L + (axis * 2)) |
| 78 | |
| 79 | #define BMG160_REG_SLOPE_THRES 0x1B |
| 80 | #define BMG160_SLOPE_THRES_MASK 0x0F |
| 81 | |
| 82 | #define BMG160_REG_MOTION_INTR 0x1C |
| 83 | #define BMG160_INT_MOTION_X BIT(0) |
| 84 | #define BMG160_INT_MOTION_Y BIT(1) |
| 85 | #define BMG160_INT_MOTION_Z BIT(2) |
| 86 | #define BMG160_ANY_DUR_MASK 0x30 |
| 87 | #define BMG160_ANY_DUR_SHIFT 4 |
| 88 | |
| 89 | #define BMG160_REG_INT_STATUS_2 0x0B |
| 90 | #define BMG160_ANY_MOTION_MASK 0x07 |
Srinivas Pandruvada | cb80f6a | 2014-10-10 20:33:27 -0700 | [diff] [blame] | 91 | #define BMG160_ANY_MOTION_BIT_X BIT(0) |
| 92 | #define BMG160_ANY_MOTION_BIT_Y BIT(1) |
| 93 | #define BMG160_ANY_MOTION_BIT_Z BIT(2) |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 94 | |
| 95 | #define BMG160_REG_TEMP 0x08 |
| 96 | #define BMG160_TEMP_CENTER_VAL 23 |
| 97 | |
| 98 | #define BMG160_MAX_STARTUP_TIME_MS 80 |
| 99 | |
| 100 | #define BMG160_AUTO_SUSPEND_DELAY_MS 2000 |
| 101 | |
| 102 | struct bmg160_data { |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 103 | struct regmap *regmap; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 104 | struct iio_trigger *dready_trig; |
| 105 | struct iio_trigger *motion_trig; |
| 106 | struct mutex mutex; |
| 107 | s16 buffer[8]; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 108 | u32 dps_range; |
| 109 | int ev_enable_state; |
| 110 | int slope_thres; |
| 111 | bool dready_trigger_on; |
| 112 | bool motion_trigger_on; |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 113 | int irq; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 114 | }; |
| 115 | |
| 116 | enum bmg160_axis { |
| 117 | AXIS_X, |
| 118 | AXIS_Y, |
| 119 | AXIS_Z, |
Irina Tirdea | ee8c541 | 2016-03-24 11:29:28 +0200 | [diff] [blame] | 120 | AXIS_MAX, |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 121 | }; |
| 122 | |
| 123 | static const struct { |
Steffen Trumtrar | bf61f5d | 2016-04-21 12:49:00 +0200 | [diff] [blame] | 124 | int odr; |
| 125 | int filter; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 126 | int bw_bits; |
Steffen Trumtrar | bf61f5d | 2016-04-21 12:49:00 +0200 | [diff] [blame] | 127 | } bmg160_samp_freq_table[] = { {100, 32, 0x07}, |
| 128 | {200, 64, 0x06}, |
| 129 | {100, 12, 0x05}, |
| 130 | {200, 23, 0x04}, |
| 131 | {400, 47, 0x03}, |
| 132 | {1000, 116, 0x02}, |
| 133 | {2000, 230, 0x01} }; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 134 | |
| 135 | static const struct { |
| 136 | int scale; |
| 137 | int dps_range; |
| 138 | } bmg160_scale_table[] = { { 1065, BMG160_RANGE_2000DPS}, |
| 139 | { 532, BMG160_RANGE_1000DPS}, |
| 140 | { 266, BMG160_RANGE_500DPS}, |
| 141 | { 133, BMG160_RANGE_250DPS}, |
| 142 | { 66, BMG160_RANGE_125DPS} }; |
| 143 | |
| 144 | static int bmg160_set_mode(struct bmg160_data *data, u8 mode) |
| 145 | { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 146 | struct device *dev = regmap_get_device(data->regmap); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 147 | int ret; |
| 148 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 149 | ret = regmap_write(data->regmap, BMG160_REG_PMU_LPW, mode); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 150 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 151 | dev_err(dev, "Error writing reg_pmu_lpw\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 152 | return ret; |
| 153 | } |
| 154 | |
| 155 | return 0; |
| 156 | } |
| 157 | |
| 158 | static int bmg160_convert_freq_to_bit(int val) |
| 159 | { |
| 160 | int i; |
| 161 | |
| 162 | for (i = 0; i < ARRAY_SIZE(bmg160_samp_freq_table); ++i) { |
Steffen Trumtrar | bf61f5d | 2016-04-21 12:49:00 +0200 | [diff] [blame] | 163 | if (bmg160_samp_freq_table[i].odr == val) |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 164 | return bmg160_samp_freq_table[i].bw_bits; |
| 165 | } |
| 166 | |
| 167 | return -EINVAL; |
| 168 | } |
| 169 | |
| 170 | static int bmg160_set_bw(struct bmg160_data *data, int val) |
| 171 | { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 172 | struct device *dev = regmap_get_device(data->regmap); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 173 | int ret; |
| 174 | int bw_bits; |
| 175 | |
| 176 | bw_bits = bmg160_convert_freq_to_bit(val); |
| 177 | if (bw_bits < 0) |
| 178 | return bw_bits; |
| 179 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 180 | ret = regmap_write(data->regmap, BMG160_REG_PMU_BW, bw_bits); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 181 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 182 | dev_err(dev, "Error writing reg_pmu_bw\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 183 | return ret; |
| 184 | } |
| 185 | |
Steffen Trumtrar | bf61f5d | 2016-04-21 12:49:00 +0200 | [diff] [blame] | 186 | return 0; |
| 187 | } |
| 188 | |
| 189 | static int bmg160_get_filter(struct bmg160_data *data, int *val) |
| 190 | { |
| 191 | struct device *dev = regmap_get_device(data->regmap); |
| 192 | int ret; |
| 193 | int i; |
| 194 | unsigned int bw_bits; |
| 195 | |
| 196 | ret = regmap_read(data->regmap, BMG160_REG_PMU_BW, &bw_bits); |
| 197 | if (ret < 0) { |
| 198 | dev_err(dev, "Error reading reg_pmu_bw\n"); |
| 199 | return ret; |
| 200 | } |
| 201 | |
| 202 | /* Ignore the readonly reserved bit. */ |
| 203 | bw_bits &= ~BMG160_REG_PMU_BW_RES; |
| 204 | |
| 205 | for (i = 0; i < ARRAY_SIZE(bmg160_samp_freq_table); ++i) { |
| 206 | if (bmg160_samp_freq_table[i].bw_bits == bw_bits) |
| 207 | break; |
| 208 | } |
| 209 | |
| 210 | *val = bmg160_samp_freq_table[i].filter; |
| 211 | |
| 212 | return ret ? ret : IIO_VAL_INT; |
| 213 | } |
| 214 | |
| 215 | |
| 216 | static int bmg160_set_filter(struct bmg160_data *data, int val) |
| 217 | { |
| 218 | struct device *dev = regmap_get_device(data->regmap); |
| 219 | int ret; |
| 220 | int i; |
| 221 | |
| 222 | for (i = 0; i < ARRAY_SIZE(bmg160_samp_freq_table); ++i) { |
| 223 | if (bmg160_samp_freq_table[i].filter == val) |
| 224 | break; |
| 225 | } |
| 226 | |
| 227 | ret = regmap_write(data->regmap, BMG160_REG_PMU_BW, |
| 228 | bmg160_samp_freq_table[i].bw_bits); |
| 229 | if (ret < 0) { |
| 230 | dev_err(dev, "Error writing reg_pmu_bw\n"); |
| 231 | return ret; |
| 232 | } |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 233 | |
| 234 | return 0; |
| 235 | } |
| 236 | |
| 237 | static int bmg160_chip_init(struct bmg160_data *data) |
| 238 | { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 239 | struct device *dev = regmap_get_device(data->regmap); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 240 | int ret; |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 241 | unsigned int val; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 242 | |
Quentin Schulz | 71b44ef | 2017-03-21 16:52:14 +0100 | [diff] [blame] | 243 | /* |
| 244 | * Reset chip to get it in a known good state. A delay of 30ms after |
| 245 | * reset is required according to the datasheet. |
| 246 | */ |
| 247 | regmap_write(data->regmap, BMG160_GYRO_REG_RESET, |
| 248 | BMG160_GYRO_RESET_VAL); |
| 249 | usleep_range(30000, 30700); |
| 250 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 251 | ret = regmap_read(data->regmap, BMG160_REG_CHIP_ID, &val); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 252 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 253 | dev_err(dev, "Error reading reg_chip_id\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 254 | return ret; |
| 255 | } |
| 256 | |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 257 | dev_dbg(dev, "Chip Id %x\n", val); |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 258 | if (val != BMG160_CHIP_ID_VAL) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 259 | dev_err(dev, "invalid chip %x\n", val); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 260 | return -ENODEV; |
| 261 | } |
| 262 | |
| 263 | ret = bmg160_set_mode(data, BMG160_MODE_NORMAL); |
| 264 | if (ret < 0) |
| 265 | return ret; |
| 266 | |
| 267 | /* Wait upto 500 ms to be ready after changing mode */ |
| 268 | usleep_range(500, 1000); |
| 269 | |
| 270 | /* Set Bandwidth */ |
| 271 | ret = bmg160_set_bw(data, BMG160_DEF_BW); |
| 272 | if (ret < 0) |
| 273 | return ret; |
| 274 | |
| 275 | /* Set Default Range */ |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 276 | ret = regmap_write(data->regmap, BMG160_REG_RANGE, BMG160_RANGE_500DPS); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 277 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 278 | dev_err(dev, "Error writing reg_range\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 279 | return ret; |
| 280 | } |
| 281 | data->dps_range = BMG160_RANGE_500DPS; |
| 282 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 283 | ret = regmap_read(data->regmap, BMG160_REG_SLOPE_THRES, &val); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 284 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 285 | dev_err(dev, "Error reading reg_slope_thres\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 286 | return ret; |
| 287 | } |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 288 | data->slope_thres = val; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 289 | |
| 290 | /* Set default interrupt mode */ |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 291 | ret = regmap_update_bits(data->regmap, BMG160_REG_INT_EN_1, |
| 292 | BMG160_INT1_BIT_OD, 0); |
Srinivas Pandruvada | 5af6b30 | 2014-10-10 20:33:26 -0700 | [diff] [blame] | 293 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 294 | dev_err(dev, "Error updating bits in reg_int_en_1\n"); |
Srinivas Pandruvada | 5af6b30 | 2014-10-10 20:33:26 -0700 | [diff] [blame] | 295 | return ret; |
| 296 | } |
| 297 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 298 | ret = regmap_write(data->regmap, BMG160_REG_INT_RST_LATCH, |
| 299 | BMG160_INT_MODE_LATCH_INT | |
| 300 | BMG160_INT_MODE_LATCH_RESET); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 301 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 302 | dev_err(dev, |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 303 | "Error writing reg_motion_intr\n"); |
| 304 | return ret; |
| 305 | } |
| 306 | |
| 307 | return 0; |
| 308 | } |
| 309 | |
| 310 | static int bmg160_set_power_state(struct bmg160_data *data, bool on) |
| 311 | { |
Rafael J. Wysocki | 6f0a13f | 2014-12-04 01:08:13 +0100 | [diff] [blame] | 312 | #ifdef CONFIG_PM |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 313 | struct device *dev = regmap_get_device(data->regmap); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 314 | int ret; |
| 315 | |
| 316 | if (on) |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 317 | ret = pm_runtime_get_sync(dev); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 318 | else { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 319 | pm_runtime_mark_last_busy(dev); |
| 320 | ret = pm_runtime_put_autosuspend(dev); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 321 | } |
| 322 | |
| 323 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 324 | dev_err(dev, "Failed: bmg160_set_power_state for %d\n", on); |
| 325 | |
Srinivas Pandruvada | 10bef28 | 2014-10-10 20:33:25 -0700 | [diff] [blame] | 326 | if (on) |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 327 | pm_runtime_put_noidle(dev); |
Srinivas Pandruvada | 10bef28 | 2014-10-10 20:33:25 -0700 | [diff] [blame] | 328 | |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 329 | return ret; |
| 330 | } |
Irina Tirdea | ef1c6b2 | 2014-08-09 15:05:00 +0100 | [diff] [blame] | 331 | #endif |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 332 | |
| 333 | return 0; |
| 334 | } |
| 335 | |
| 336 | static int bmg160_setup_any_motion_interrupt(struct bmg160_data *data, |
| 337 | bool status) |
| 338 | { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 339 | struct device *dev = regmap_get_device(data->regmap); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 340 | int ret; |
| 341 | |
| 342 | /* Enable/Disable INT_MAP0 mapping */ |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 343 | ret = regmap_update_bits(data->regmap, BMG160_REG_INT_MAP_0, |
| 344 | BMG160_INT_MAP_0_BIT_ANY, |
| 345 | (status ? BMG160_INT_MAP_0_BIT_ANY : 0)); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 346 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 347 | dev_err(dev, "Error updating bits reg_int_map0\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 348 | return ret; |
| 349 | } |
| 350 | |
| 351 | /* Enable/Disable slope interrupts */ |
| 352 | if (status) { |
| 353 | /* Update slope thres */ |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 354 | ret = regmap_write(data->regmap, BMG160_REG_SLOPE_THRES, |
| 355 | data->slope_thres); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 356 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 357 | dev_err(dev, "Error writing reg_slope_thres\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 358 | return ret; |
| 359 | } |
| 360 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 361 | ret = regmap_write(data->regmap, BMG160_REG_MOTION_INTR, |
| 362 | BMG160_INT_MOTION_X | BMG160_INT_MOTION_Y | |
| 363 | BMG160_INT_MOTION_Z); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 364 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 365 | dev_err(dev, "Error writing reg_motion_intr\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 366 | return ret; |
| 367 | } |
| 368 | |
| 369 | /* |
| 370 | * New data interrupt is always non-latched, |
| 371 | * which will have higher priority, so no need |
| 372 | * to set latched mode, we will be flooded anyway with INTR |
| 373 | */ |
| 374 | if (!data->dready_trigger_on) { |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 375 | ret = regmap_write(data->regmap, |
| 376 | BMG160_REG_INT_RST_LATCH, |
| 377 | BMG160_INT_MODE_LATCH_INT | |
| 378 | BMG160_INT_MODE_LATCH_RESET); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 379 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 380 | dev_err(dev, "Error writing reg_rst_latch\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 381 | return ret; |
| 382 | } |
| 383 | } |
| 384 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 385 | ret = regmap_write(data->regmap, BMG160_REG_INT_EN_0, |
| 386 | BMG160_DATA_ENABLE_INT); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 387 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 388 | } else { |
| 389 | ret = regmap_write(data->regmap, BMG160_REG_INT_EN_0, 0); |
| 390 | } |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 391 | |
| 392 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 393 | dev_err(dev, "Error writing reg_int_en0\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 394 | return ret; |
| 395 | } |
| 396 | |
| 397 | return 0; |
| 398 | } |
| 399 | |
| 400 | static int bmg160_setup_new_data_interrupt(struct bmg160_data *data, |
| 401 | bool status) |
| 402 | { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 403 | struct device *dev = regmap_get_device(data->regmap); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 404 | int ret; |
| 405 | |
| 406 | /* Enable/Disable INT_MAP1 mapping */ |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 407 | ret = regmap_update_bits(data->regmap, BMG160_REG_INT_MAP_1, |
| 408 | BMG160_INT_MAP_1_BIT_NEW_DATA, |
| 409 | (status ? BMG160_INT_MAP_1_BIT_NEW_DATA : 0)); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 410 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 411 | dev_err(dev, "Error updating bits in reg_int_map1\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 412 | return ret; |
| 413 | } |
| 414 | |
| 415 | if (status) { |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 416 | ret = regmap_write(data->regmap, BMG160_REG_INT_RST_LATCH, |
| 417 | BMG160_INT_MODE_NON_LATCH_INT | |
| 418 | BMG160_INT_MODE_LATCH_RESET); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 419 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 420 | dev_err(dev, "Error writing reg_rst_latch\n"); |
| 421 | return ret; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 422 | } |
| 423 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 424 | ret = regmap_write(data->regmap, BMG160_REG_INT_EN_0, |
| 425 | BMG160_DATA_ENABLE_INT); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 426 | |
| 427 | } else { |
| 428 | /* Restore interrupt mode */ |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 429 | ret = regmap_write(data->regmap, BMG160_REG_INT_RST_LATCH, |
| 430 | BMG160_INT_MODE_LATCH_INT | |
| 431 | BMG160_INT_MODE_LATCH_RESET); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 432 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 433 | dev_err(dev, "Error writing reg_rst_latch\n"); |
| 434 | return ret; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 435 | } |
| 436 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 437 | ret = regmap_write(data->regmap, BMG160_REG_INT_EN_0, 0); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 438 | } |
| 439 | |
| 440 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 441 | dev_err(dev, "Error writing reg_int_en0\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 442 | return ret; |
| 443 | } |
| 444 | |
| 445 | return 0; |
| 446 | } |
| 447 | |
| 448 | static int bmg160_get_bw(struct bmg160_data *data, int *val) |
| 449 | { |
Steffen Trumtrar | bf61f5d | 2016-04-21 12:49:00 +0200 | [diff] [blame] | 450 | struct device *dev = regmap_get_device(data->regmap); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 451 | int i; |
Steffen Trumtrar | bf61f5d | 2016-04-21 12:49:00 +0200 | [diff] [blame] | 452 | unsigned int bw_bits; |
| 453 | int ret; |
| 454 | |
| 455 | ret = regmap_read(data->regmap, BMG160_REG_PMU_BW, &bw_bits); |
| 456 | if (ret < 0) { |
| 457 | dev_err(dev, "Error reading reg_pmu_bw\n"); |
| 458 | return ret; |
| 459 | } |
| 460 | |
| 461 | /* Ignore the readonly reserved bit. */ |
| 462 | bw_bits &= ~BMG160_REG_PMU_BW_RES; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 463 | |
| 464 | for (i = 0; i < ARRAY_SIZE(bmg160_samp_freq_table); ++i) { |
Steffen Trumtrar | bf61f5d | 2016-04-21 12:49:00 +0200 | [diff] [blame] | 465 | if (bmg160_samp_freq_table[i].bw_bits == bw_bits) { |
| 466 | *val = bmg160_samp_freq_table[i].odr; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 467 | return IIO_VAL_INT; |
| 468 | } |
| 469 | } |
| 470 | |
| 471 | return -EINVAL; |
| 472 | } |
| 473 | |
| 474 | static int bmg160_set_scale(struct bmg160_data *data, int val) |
| 475 | { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 476 | struct device *dev = regmap_get_device(data->regmap); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 477 | int ret, i; |
| 478 | |
| 479 | for (i = 0; i < ARRAY_SIZE(bmg160_scale_table); ++i) { |
| 480 | if (bmg160_scale_table[i].scale == val) { |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 481 | ret = regmap_write(data->regmap, BMG160_REG_RANGE, |
| 482 | bmg160_scale_table[i].dps_range); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 483 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 484 | dev_err(dev, "Error writing reg_range\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 485 | return ret; |
| 486 | } |
| 487 | data->dps_range = bmg160_scale_table[i].dps_range; |
| 488 | return 0; |
| 489 | } |
| 490 | } |
| 491 | |
| 492 | return -EINVAL; |
| 493 | } |
| 494 | |
| 495 | static int bmg160_get_temp(struct bmg160_data *data, int *val) |
| 496 | { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 497 | struct device *dev = regmap_get_device(data->regmap); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 498 | int ret; |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 499 | unsigned int raw_val; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 500 | |
| 501 | mutex_lock(&data->mutex); |
| 502 | ret = bmg160_set_power_state(data, true); |
| 503 | if (ret < 0) { |
| 504 | mutex_unlock(&data->mutex); |
| 505 | return ret; |
| 506 | } |
| 507 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 508 | ret = regmap_read(data->regmap, BMG160_REG_TEMP, &raw_val); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 509 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 510 | dev_err(dev, "Error reading reg_temp\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 511 | bmg160_set_power_state(data, false); |
| 512 | mutex_unlock(&data->mutex); |
| 513 | return ret; |
| 514 | } |
| 515 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 516 | *val = sign_extend32(raw_val, 7); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 517 | ret = bmg160_set_power_state(data, false); |
| 518 | mutex_unlock(&data->mutex); |
| 519 | if (ret < 0) |
| 520 | return ret; |
| 521 | |
| 522 | return IIO_VAL_INT; |
| 523 | } |
| 524 | |
| 525 | static int bmg160_get_axis(struct bmg160_data *data, int axis, int *val) |
| 526 | { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 527 | struct device *dev = regmap_get_device(data->regmap); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 528 | int ret; |
Irina Tirdea | 95e7ff0 | 2016-03-29 15:37:30 +0300 | [diff] [blame] | 529 | __le16 raw_val; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 530 | |
| 531 | mutex_lock(&data->mutex); |
| 532 | ret = bmg160_set_power_state(data, true); |
| 533 | if (ret < 0) { |
| 534 | mutex_unlock(&data->mutex); |
| 535 | return ret; |
| 536 | } |
| 537 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 538 | ret = regmap_bulk_read(data->regmap, BMG160_AXIS_TO_REG(axis), &raw_val, |
Irina Tirdea | 95e7ff0 | 2016-03-29 15:37:30 +0300 | [diff] [blame] | 539 | sizeof(raw_val)); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 540 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 541 | dev_err(dev, "Error reading axis %d\n", axis); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 542 | bmg160_set_power_state(data, false); |
| 543 | mutex_unlock(&data->mutex); |
| 544 | return ret; |
| 545 | } |
| 546 | |
Irina Tirdea | 95e7ff0 | 2016-03-29 15:37:30 +0300 | [diff] [blame] | 547 | *val = sign_extend32(le16_to_cpu(raw_val), 15); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 548 | ret = bmg160_set_power_state(data, false); |
| 549 | mutex_unlock(&data->mutex); |
| 550 | if (ret < 0) |
| 551 | return ret; |
| 552 | |
| 553 | return IIO_VAL_INT; |
| 554 | } |
| 555 | |
| 556 | static int bmg160_read_raw(struct iio_dev *indio_dev, |
| 557 | struct iio_chan_spec const *chan, |
| 558 | int *val, int *val2, long mask) |
| 559 | { |
| 560 | struct bmg160_data *data = iio_priv(indio_dev); |
| 561 | int ret; |
| 562 | |
| 563 | switch (mask) { |
| 564 | case IIO_CHAN_INFO_RAW: |
| 565 | switch (chan->type) { |
| 566 | case IIO_TEMP: |
| 567 | return bmg160_get_temp(data, val); |
| 568 | case IIO_ANGL_VEL: |
| 569 | if (iio_buffer_enabled(indio_dev)) |
| 570 | return -EBUSY; |
| 571 | else |
| 572 | return bmg160_get_axis(data, chan->scan_index, |
| 573 | val); |
| 574 | default: |
| 575 | return -EINVAL; |
| 576 | } |
| 577 | case IIO_CHAN_INFO_OFFSET: |
| 578 | if (chan->type == IIO_TEMP) { |
| 579 | *val = BMG160_TEMP_CENTER_VAL; |
| 580 | return IIO_VAL_INT; |
| 581 | } else |
| 582 | return -EINVAL; |
Steffen Trumtrar | bf61f5d | 2016-04-21 12:49:00 +0200 | [diff] [blame] | 583 | case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY: |
| 584 | return bmg160_get_filter(data, val); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 585 | case IIO_CHAN_INFO_SCALE: |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 586 | switch (chan->type) { |
| 587 | case IIO_TEMP: |
Mike Looijmans | db0609c | 2019-02-13 08:41:47 +0100 | [diff] [blame] | 588 | *val = 500; |
| 589 | return IIO_VAL_INT; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 590 | case IIO_ANGL_VEL: |
| 591 | { |
| 592 | int i; |
| 593 | |
| 594 | for (i = 0; i < ARRAY_SIZE(bmg160_scale_table); ++i) { |
| 595 | if (bmg160_scale_table[i].dps_range == |
| 596 | data->dps_range) { |
Mike Looijmans | db0609c | 2019-02-13 08:41:47 +0100 | [diff] [blame] | 597 | *val = 0; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 598 | *val2 = bmg160_scale_table[i].scale; |
| 599 | return IIO_VAL_INT_PLUS_MICRO; |
| 600 | } |
| 601 | } |
| 602 | return -EINVAL; |
| 603 | } |
| 604 | default: |
| 605 | return -EINVAL; |
| 606 | } |
| 607 | case IIO_CHAN_INFO_SAMP_FREQ: |
| 608 | *val2 = 0; |
| 609 | mutex_lock(&data->mutex); |
| 610 | ret = bmg160_get_bw(data, val); |
| 611 | mutex_unlock(&data->mutex); |
| 612 | return ret; |
| 613 | default: |
| 614 | return -EINVAL; |
| 615 | } |
| 616 | } |
| 617 | |
| 618 | static int bmg160_write_raw(struct iio_dev *indio_dev, |
| 619 | struct iio_chan_spec const *chan, |
| 620 | int val, int val2, long mask) |
| 621 | { |
| 622 | struct bmg160_data *data = iio_priv(indio_dev); |
| 623 | int ret; |
| 624 | |
| 625 | switch (mask) { |
| 626 | case IIO_CHAN_INFO_SAMP_FREQ: |
| 627 | mutex_lock(&data->mutex); |
| 628 | /* |
| 629 | * Section 4.2 of spec |
| 630 | * In suspend mode, the only supported operations are reading |
| 631 | * registers as well as writing to the (0x14) softreset |
| 632 | * register. Since we will be in suspend mode by default, change |
| 633 | * mode to power on for other writes. |
| 634 | */ |
| 635 | ret = bmg160_set_power_state(data, true); |
| 636 | if (ret < 0) { |
| 637 | mutex_unlock(&data->mutex); |
| 638 | return ret; |
| 639 | } |
| 640 | ret = bmg160_set_bw(data, val); |
| 641 | if (ret < 0) { |
| 642 | bmg160_set_power_state(data, false); |
| 643 | mutex_unlock(&data->mutex); |
| 644 | return ret; |
| 645 | } |
| 646 | ret = bmg160_set_power_state(data, false); |
| 647 | mutex_unlock(&data->mutex); |
| 648 | return ret; |
Steffen Trumtrar | bf61f5d | 2016-04-21 12:49:00 +0200 | [diff] [blame] | 649 | case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY: |
| 650 | if (val2) |
| 651 | return -EINVAL; |
| 652 | |
| 653 | mutex_lock(&data->mutex); |
| 654 | ret = bmg160_set_power_state(data, true); |
| 655 | if (ret < 0) { |
| 656 | bmg160_set_power_state(data, false); |
| 657 | mutex_unlock(&data->mutex); |
| 658 | return ret; |
| 659 | } |
| 660 | ret = bmg160_set_filter(data, val); |
| 661 | if (ret < 0) { |
| 662 | bmg160_set_power_state(data, false); |
| 663 | mutex_unlock(&data->mutex); |
| 664 | return ret; |
| 665 | } |
| 666 | ret = bmg160_set_power_state(data, false); |
| 667 | mutex_unlock(&data->mutex); |
| 668 | return ret; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 669 | case IIO_CHAN_INFO_SCALE: |
| 670 | if (val) |
| 671 | return -EINVAL; |
| 672 | |
| 673 | mutex_lock(&data->mutex); |
| 674 | /* Refer to comments above for the suspend mode ops */ |
| 675 | ret = bmg160_set_power_state(data, true); |
| 676 | if (ret < 0) { |
| 677 | mutex_unlock(&data->mutex); |
| 678 | return ret; |
| 679 | } |
| 680 | ret = bmg160_set_scale(data, val2); |
| 681 | if (ret < 0) { |
| 682 | bmg160_set_power_state(data, false); |
| 683 | mutex_unlock(&data->mutex); |
| 684 | return ret; |
| 685 | } |
| 686 | ret = bmg160_set_power_state(data, false); |
| 687 | mutex_unlock(&data->mutex); |
| 688 | return ret; |
| 689 | default: |
| 690 | return -EINVAL; |
| 691 | } |
| 692 | |
| 693 | return -EINVAL; |
| 694 | } |
| 695 | |
| 696 | static int bmg160_read_event(struct iio_dev *indio_dev, |
| 697 | const struct iio_chan_spec *chan, |
| 698 | enum iio_event_type type, |
| 699 | enum iio_event_direction dir, |
| 700 | enum iio_event_info info, |
| 701 | int *val, int *val2) |
| 702 | { |
| 703 | struct bmg160_data *data = iio_priv(indio_dev); |
| 704 | |
| 705 | *val2 = 0; |
| 706 | switch (info) { |
| 707 | case IIO_EV_INFO_VALUE: |
| 708 | *val = data->slope_thres & BMG160_SLOPE_THRES_MASK; |
| 709 | break; |
| 710 | default: |
| 711 | return -EINVAL; |
| 712 | } |
| 713 | |
| 714 | return IIO_VAL_INT; |
| 715 | } |
| 716 | |
| 717 | static int bmg160_write_event(struct iio_dev *indio_dev, |
| 718 | const struct iio_chan_spec *chan, |
| 719 | enum iio_event_type type, |
| 720 | enum iio_event_direction dir, |
| 721 | enum iio_event_info info, |
| 722 | int val, int val2) |
| 723 | { |
| 724 | struct bmg160_data *data = iio_priv(indio_dev); |
| 725 | |
| 726 | switch (info) { |
| 727 | case IIO_EV_INFO_VALUE: |
| 728 | if (data->ev_enable_state) |
| 729 | return -EBUSY; |
| 730 | data->slope_thres &= ~BMG160_SLOPE_THRES_MASK; |
| 731 | data->slope_thres |= (val & BMG160_SLOPE_THRES_MASK); |
| 732 | break; |
| 733 | default: |
| 734 | return -EINVAL; |
| 735 | } |
| 736 | |
| 737 | return 0; |
| 738 | } |
| 739 | |
| 740 | static int bmg160_read_event_config(struct iio_dev *indio_dev, |
| 741 | const struct iio_chan_spec *chan, |
| 742 | enum iio_event_type type, |
| 743 | enum iio_event_direction dir) |
| 744 | { |
| 745 | |
| 746 | struct bmg160_data *data = iio_priv(indio_dev); |
| 747 | |
| 748 | return data->ev_enable_state; |
| 749 | } |
| 750 | |
| 751 | static int bmg160_write_event_config(struct iio_dev *indio_dev, |
| 752 | const struct iio_chan_spec *chan, |
| 753 | enum iio_event_type type, |
| 754 | enum iio_event_direction dir, |
| 755 | int state) |
| 756 | { |
| 757 | struct bmg160_data *data = iio_priv(indio_dev); |
| 758 | int ret; |
| 759 | |
| 760 | if (state && data->ev_enable_state) |
| 761 | return 0; |
| 762 | |
| 763 | mutex_lock(&data->mutex); |
| 764 | |
| 765 | if (!state && data->motion_trigger_on) { |
| 766 | data->ev_enable_state = 0; |
| 767 | mutex_unlock(&data->mutex); |
| 768 | return 0; |
| 769 | } |
| 770 | /* |
| 771 | * We will expect the enable and disable to do operation in |
| 772 | * in reverse order. This will happen here anyway as our |
| 773 | * resume operation uses sync mode runtime pm calls, the |
| 774 | * suspend operation will be delayed by autosuspend delay |
| 775 | * So the disable operation will still happen in reverse of |
| 776 | * enable operation. When runtime pm is disabled the mode |
| 777 | * is always on so sequence doesn't matter |
| 778 | */ |
| 779 | ret = bmg160_set_power_state(data, state); |
| 780 | if (ret < 0) { |
| 781 | mutex_unlock(&data->mutex); |
| 782 | return ret; |
| 783 | } |
| 784 | |
| 785 | ret = bmg160_setup_any_motion_interrupt(data, state); |
| 786 | if (ret < 0) { |
Srinivas Pandruvada | 10bef28 | 2014-10-10 20:33:25 -0700 | [diff] [blame] | 787 | bmg160_set_power_state(data, false); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 788 | mutex_unlock(&data->mutex); |
| 789 | return ret; |
| 790 | } |
| 791 | |
| 792 | data->ev_enable_state = state; |
| 793 | mutex_unlock(&data->mutex); |
| 794 | |
| 795 | return 0; |
| 796 | } |
| 797 | |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 798 | static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("100 200 400 1000 2000"); |
| 799 | |
| 800 | static IIO_CONST_ATTR(in_anglvel_scale_available, |
| 801 | "0.001065 0.000532 0.000266 0.000133 0.000066"); |
| 802 | |
| 803 | static struct attribute *bmg160_attributes[] = { |
| 804 | &iio_const_attr_sampling_frequency_available.dev_attr.attr, |
| 805 | &iio_const_attr_in_anglvel_scale_available.dev_attr.attr, |
| 806 | NULL, |
| 807 | }; |
| 808 | |
| 809 | static const struct attribute_group bmg160_attrs_group = { |
| 810 | .attrs = bmg160_attributes, |
| 811 | }; |
| 812 | |
| 813 | static const struct iio_event_spec bmg160_event = { |
| 814 | .type = IIO_EV_TYPE_ROC, |
Srinivas Pandruvada | 6896ab3 | 2014-10-10 20:33:28 -0700 | [diff] [blame] | 815 | .dir = IIO_EV_DIR_EITHER, |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 816 | .mask_shared_by_type = BIT(IIO_EV_INFO_VALUE) | |
| 817 | BIT(IIO_EV_INFO_ENABLE) |
| 818 | }; |
| 819 | |
| 820 | #define BMG160_CHANNEL(_axis) { \ |
| 821 | .type = IIO_ANGL_VEL, \ |
| 822 | .modified = 1, \ |
| 823 | .channel2 = IIO_MOD_##_axis, \ |
| 824 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ |
| 825 | .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \ |
Steffen Trumtrar | bf61f5d | 2016-04-21 12:49:00 +0200 | [diff] [blame] | 826 | BIT(IIO_CHAN_INFO_SAMP_FREQ) | \ |
| 827 | BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY), \ |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 828 | .scan_index = AXIS_##_axis, \ |
| 829 | .scan_type = { \ |
| 830 | .sign = 's', \ |
| 831 | .realbits = 16, \ |
| 832 | .storagebits = 16, \ |
Irina Tirdea | 7e3d1eb | 2016-03-24 11:29:29 +0200 | [diff] [blame] | 833 | .endianness = IIO_LE, \ |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 834 | }, \ |
| 835 | .event_spec = &bmg160_event, \ |
| 836 | .num_event_specs = 1 \ |
| 837 | } |
| 838 | |
| 839 | static const struct iio_chan_spec bmg160_channels[] = { |
| 840 | { |
| 841 | .type = IIO_TEMP, |
| 842 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | |
| 843 | BIT(IIO_CHAN_INFO_SCALE) | |
| 844 | BIT(IIO_CHAN_INFO_OFFSET), |
| 845 | .scan_index = -1, |
| 846 | }, |
| 847 | BMG160_CHANNEL(X), |
| 848 | BMG160_CHANNEL(Y), |
| 849 | BMG160_CHANNEL(Z), |
| 850 | IIO_CHAN_SOFT_TIMESTAMP(3), |
| 851 | }; |
| 852 | |
| 853 | static const struct iio_info bmg160_info = { |
| 854 | .attrs = &bmg160_attrs_group, |
| 855 | .read_raw = bmg160_read_raw, |
| 856 | .write_raw = bmg160_write_raw, |
| 857 | .read_event_value = bmg160_read_event, |
| 858 | .write_event_value = bmg160_write_event, |
| 859 | .write_event_config = bmg160_write_event_config, |
| 860 | .read_event_config = bmg160_read_event_config, |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 861 | .driver_module = THIS_MODULE, |
| 862 | }; |
| 863 | |
Irina Tirdea | ee8c541 | 2016-03-24 11:29:28 +0200 | [diff] [blame] | 864 | static const unsigned long bmg160_accel_scan_masks[] = { |
| 865 | BIT(AXIS_X) | BIT(AXIS_Y) | BIT(AXIS_Z), |
| 866 | 0}; |
| 867 | |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 868 | static irqreturn_t bmg160_trigger_handler(int irq, void *p) |
| 869 | { |
| 870 | struct iio_poll_func *pf = p; |
| 871 | struct iio_dev *indio_dev = pf->indio_dev; |
| 872 | struct bmg160_data *data = iio_priv(indio_dev); |
Irina Tirdea | 7e3d1eb | 2016-03-24 11:29:29 +0200 | [diff] [blame] | 873 | int ret; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 874 | |
| 875 | mutex_lock(&data->mutex); |
Irina Tirdea | 7e3d1eb | 2016-03-24 11:29:29 +0200 | [diff] [blame] | 876 | ret = regmap_bulk_read(data->regmap, BMG160_REG_XOUT_L, |
| 877 | data->buffer, AXIS_MAX * 2); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 878 | mutex_unlock(&data->mutex); |
Irina Tirdea | 7e3d1eb | 2016-03-24 11:29:29 +0200 | [diff] [blame] | 879 | if (ret < 0) |
| 880 | goto err; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 881 | |
| 882 | iio_push_to_buffers_with_timestamp(indio_dev, data->buffer, |
Vlad Dogaru | eb21910 | 2015-05-13 16:30:08 +0300 | [diff] [blame] | 883 | pf->timestamp); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 884 | err: |
| 885 | iio_trigger_notify_done(indio_dev->trig); |
| 886 | |
| 887 | return IRQ_HANDLED; |
| 888 | } |
| 889 | |
| 890 | static int bmg160_trig_try_reen(struct iio_trigger *trig) |
| 891 | { |
| 892 | struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); |
| 893 | struct bmg160_data *data = iio_priv(indio_dev); |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 894 | struct device *dev = regmap_get_device(data->regmap); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 895 | int ret; |
| 896 | |
| 897 | /* new data interrupts don't need ack */ |
| 898 | if (data->dready_trigger_on) |
| 899 | return 0; |
| 900 | |
| 901 | /* Set latched mode interrupt and clear any latched interrupt */ |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 902 | ret = regmap_write(data->regmap, BMG160_REG_INT_RST_LATCH, |
| 903 | BMG160_INT_MODE_LATCH_INT | |
| 904 | BMG160_INT_MODE_LATCH_RESET); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 905 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 906 | dev_err(dev, "Error writing reg_rst_latch\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 907 | return ret; |
| 908 | } |
| 909 | |
| 910 | return 0; |
| 911 | } |
| 912 | |
| 913 | static int bmg160_data_rdy_trigger_set_state(struct iio_trigger *trig, |
| 914 | bool state) |
| 915 | { |
| 916 | struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); |
| 917 | struct bmg160_data *data = iio_priv(indio_dev); |
| 918 | int ret; |
| 919 | |
| 920 | mutex_lock(&data->mutex); |
| 921 | |
| 922 | if (!state && data->ev_enable_state && data->motion_trigger_on) { |
| 923 | data->motion_trigger_on = false; |
| 924 | mutex_unlock(&data->mutex); |
| 925 | return 0; |
| 926 | } |
| 927 | |
| 928 | /* |
| 929 | * Refer to comment in bmg160_write_event_config for |
| 930 | * enable/disable operation order |
| 931 | */ |
| 932 | ret = bmg160_set_power_state(data, state); |
| 933 | if (ret < 0) { |
| 934 | mutex_unlock(&data->mutex); |
| 935 | return ret; |
| 936 | } |
| 937 | if (data->motion_trig == trig) |
| 938 | ret = bmg160_setup_any_motion_interrupt(data, state); |
| 939 | else |
| 940 | ret = bmg160_setup_new_data_interrupt(data, state); |
| 941 | if (ret < 0) { |
Srinivas Pandruvada | 10bef28 | 2014-10-10 20:33:25 -0700 | [diff] [blame] | 942 | bmg160_set_power_state(data, false); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 943 | mutex_unlock(&data->mutex); |
| 944 | return ret; |
| 945 | } |
| 946 | if (data->motion_trig == trig) |
| 947 | data->motion_trigger_on = state; |
| 948 | else |
| 949 | data->dready_trigger_on = state; |
| 950 | |
| 951 | mutex_unlock(&data->mutex); |
| 952 | |
| 953 | return 0; |
| 954 | } |
| 955 | |
| 956 | static const struct iio_trigger_ops bmg160_trigger_ops = { |
| 957 | .set_trigger_state = bmg160_data_rdy_trigger_set_state, |
| 958 | .try_reenable = bmg160_trig_try_reen, |
| 959 | .owner = THIS_MODULE, |
| 960 | }; |
| 961 | |
| 962 | static irqreturn_t bmg160_event_handler(int irq, void *private) |
| 963 | { |
| 964 | struct iio_dev *indio_dev = private; |
| 965 | struct bmg160_data *data = iio_priv(indio_dev); |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 966 | struct device *dev = regmap_get_device(data->regmap); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 967 | int ret; |
| 968 | int dir; |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 969 | unsigned int val; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 970 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 971 | ret = regmap_read(data->regmap, BMG160_REG_INT_STATUS_2, &val); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 972 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 973 | dev_err(dev, "Error reading reg_int_status2\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 974 | goto ack_intr_status; |
| 975 | } |
| 976 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 977 | if (val & 0x08) |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 978 | dir = IIO_EV_DIR_RISING; |
| 979 | else |
| 980 | dir = IIO_EV_DIR_FALLING; |
| 981 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 982 | if (val & BMG160_ANY_MOTION_BIT_X) |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 983 | iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL, |
Gregor Boirie | bc2b7da | 2016-03-09 19:05:49 +0100 | [diff] [blame] | 984 | 0, |
| 985 | IIO_MOD_X, |
| 986 | IIO_EV_TYPE_ROC, |
| 987 | dir), |
| 988 | iio_get_time_ns(indio_dev)); |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 989 | if (val & BMG160_ANY_MOTION_BIT_Y) |
Srinivas Pandruvada | cb80f6a | 2014-10-10 20:33:27 -0700 | [diff] [blame] | 990 | iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL, |
Gregor Boirie | bc2b7da | 2016-03-09 19:05:49 +0100 | [diff] [blame] | 991 | 0, |
| 992 | IIO_MOD_Y, |
| 993 | IIO_EV_TYPE_ROC, |
| 994 | dir), |
| 995 | iio_get_time_ns(indio_dev)); |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 996 | if (val & BMG160_ANY_MOTION_BIT_Z) |
Srinivas Pandruvada | cb80f6a | 2014-10-10 20:33:27 -0700 | [diff] [blame] | 997 | iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL, |
Gregor Boirie | bc2b7da | 2016-03-09 19:05:49 +0100 | [diff] [blame] | 998 | 0, |
| 999 | IIO_MOD_Z, |
| 1000 | IIO_EV_TYPE_ROC, |
| 1001 | dir), |
| 1002 | iio_get_time_ns(indio_dev)); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1003 | |
| 1004 | ack_intr_status: |
| 1005 | if (!data->dready_trigger_on) { |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 1006 | ret = regmap_write(data->regmap, BMG160_REG_INT_RST_LATCH, |
| 1007 | BMG160_INT_MODE_LATCH_INT | |
| 1008 | BMG160_INT_MODE_LATCH_RESET); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1009 | if (ret < 0) |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 1010 | dev_err(dev, "Error writing reg_rst_latch\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1011 | } |
| 1012 | |
| 1013 | return IRQ_HANDLED; |
| 1014 | } |
| 1015 | |
| 1016 | static irqreturn_t bmg160_data_rdy_trig_poll(int irq, void *private) |
| 1017 | { |
| 1018 | struct iio_dev *indio_dev = private; |
| 1019 | struct bmg160_data *data = iio_priv(indio_dev); |
| 1020 | |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1021 | if (data->dready_trigger_on) |
| 1022 | iio_trigger_poll(data->dready_trig); |
| 1023 | else if (data->motion_trigger_on) |
| 1024 | iio_trigger_poll(data->motion_trig); |
| 1025 | |
| 1026 | if (data->ev_enable_state) |
| 1027 | return IRQ_WAKE_THREAD; |
| 1028 | else |
| 1029 | return IRQ_HANDLED; |
| 1030 | |
| 1031 | } |
| 1032 | |
Vlad Dogaru | 00e0c8e | 2015-05-13 16:30:09 +0300 | [diff] [blame] | 1033 | static int bmg160_buffer_preenable(struct iio_dev *indio_dev) |
| 1034 | { |
| 1035 | struct bmg160_data *data = iio_priv(indio_dev); |
| 1036 | |
| 1037 | return bmg160_set_power_state(data, true); |
| 1038 | } |
| 1039 | |
| 1040 | static int bmg160_buffer_postdisable(struct iio_dev *indio_dev) |
| 1041 | { |
| 1042 | struct bmg160_data *data = iio_priv(indio_dev); |
| 1043 | |
| 1044 | return bmg160_set_power_state(data, false); |
| 1045 | } |
| 1046 | |
| 1047 | static const struct iio_buffer_setup_ops bmg160_buffer_setup_ops = { |
| 1048 | .preenable = bmg160_buffer_preenable, |
| 1049 | .postenable = iio_triggered_buffer_postenable, |
| 1050 | .predisable = iio_triggered_buffer_predisable, |
| 1051 | .postdisable = bmg160_buffer_postdisable, |
| 1052 | }; |
| 1053 | |
Irina Tirdea | 3a0888e | 2014-02-09 11:59:00 +0000 | [diff] [blame] | 1054 | static const char *bmg160_match_acpi_device(struct device *dev) |
| 1055 | { |
| 1056 | const struct acpi_device_id *id; |
| 1057 | |
| 1058 | id = acpi_match_device(dev->driver->acpi_match_table, dev); |
| 1059 | if (!id) |
| 1060 | return NULL; |
| 1061 | |
| 1062 | return dev_name(dev); |
| 1063 | } |
| 1064 | |
Markus Pargmann | 1342645 | 2015-08-19 14:12:45 +0200 | [diff] [blame] | 1065 | int bmg160_core_probe(struct device *dev, struct regmap *regmap, int irq, |
| 1066 | const char *name) |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1067 | { |
| 1068 | struct bmg160_data *data; |
| 1069 | struct iio_dev *indio_dev; |
| 1070 | int ret; |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 1071 | |
Markus Pargmann | 1342645 | 2015-08-19 14:12:45 +0200 | [diff] [blame] | 1072 | indio_dev = devm_iio_device_alloc(dev, sizeof(*data)); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1073 | if (!indio_dev) |
| 1074 | return -ENOMEM; |
| 1075 | |
| 1076 | data = iio_priv(indio_dev); |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 1077 | dev_set_drvdata(dev, indio_dev); |
Markus Pargmann | 1342645 | 2015-08-19 14:12:45 +0200 | [diff] [blame] | 1078 | data->irq = irq; |
| 1079 | data->regmap = regmap; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1080 | |
| 1081 | ret = bmg160_chip_init(data); |
| 1082 | if (ret < 0) |
| 1083 | return ret; |
| 1084 | |
| 1085 | mutex_init(&data->mutex); |
| 1086 | |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 1087 | if (ACPI_HANDLE(dev)) |
| 1088 | name = bmg160_match_acpi_device(dev); |
Irina Tirdea | 3a0888e | 2014-02-09 11:59:00 +0000 | [diff] [blame] | 1089 | |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 1090 | indio_dev->dev.parent = dev; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1091 | indio_dev->channels = bmg160_channels; |
| 1092 | indio_dev->num_channels = ARRAY_SIZE(bmg160_channels); |
Irina Tirdea | 3a0888e | 2014-02-09 11:59:00 +0000 | [diff] [blame] | 1093 | indio_dev->name = name; |
Irina Tirdea | ee8c541 | 2016-03-24 11:29:28 +0200 | [diff] [blame] | 1094 | indio_dev->available_scan_masks = bmg160_accel_scan_masks; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1095 | indio_dev->modes = INDIO_DIRECT_MODE; |
| 1096 | indio_dev->info = &bmg160_info; |
| 1097 | |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 1098 | if (data->irq > 0) { |
| 1099 | ret = devm_request_threaded_irq(dev, |
| 1100 | data->irq, |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1101 | bmg160_data_rdy_trig_poll, |
| 1102 | bmg160_event_handler, |
| 1103 | IRQF_TRIGGER_RISING, |
| 1104 | BMG160_IRQ_NAME, |
| 1105 | indio_dev); |
| 1106 | if (ret) |
| 1107 | return ret; |
| 1108 | |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 1109 | data->dready_trig = devm_iio_trigger_alloc(dev, |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1110 | "%s-dev%d", |
| 1111 | indio_dev->name, |
| 1112 | indio_dev->id); |
| 1113 | if (!data->dready_trig) |
| 1114 | return -ENOMEM; |
| 1115 | |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 1116 | data->motion_trig = devm_iio_trigger_alloc(dev, |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1117 | "%s-any-motion-dev%d", |
| 1118 | indio_dev->name, |
| 1119 | indio_dev->id); |
| 1120 | if (!data->motion_trig) |
| 1121 | return -ENOMEM; |
| 1122 | |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 1123 | data->dready_trig->dev.parent = dev; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1124 | data->dready_trig->ops = &bmg160_trigger_ops; |
| 1125 | iio_trigger_set_drvdata(data->dready_trig, indio_dev); |
| 1126 | ret = iio_trigger_register(data->dready_trig); |
| 1127 | if (ret) |
| 1128 | return ret; |
| 1129 | |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 1130 | data->motion_trig->dev.parent = dev; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1131 | data->motion_trig->ops = &bmg160_trigger_ops; |
| 1132 | iio_trigger_set_drvdata(data->motion_trig, indio_dev); |
| 1133 | ret = iio_trigger_register(data->motion_trig); |
| 1134 | if (ret) { |
| 1135 | data->motion_trig = NULL; |
| 1136 | goto err_trigger_unregister; |
| 1137 | } |
Vlad Dogaru | 00e0c8e | 2015-05-13 16:30:09 +0300 | [diff] [blame] | 1138 | } |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1139 | |
Vlad Dogaru | 00e0c8e | 2015-05-13 16:30:09 +0300 | [diff] [blame] | 1140 | ret = iio_triggered_buffer_setup(indio_dev, |
| 1141 | iio_pollfunc_store_time, |
| 1142 | bmg160_trigger_handler, |
| 1143 | &bmg160_buffer_setup_ops); |
| 1144 | if (ret < 0) { |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 1145 | dev_err(dev, |
Vlad Dogaru | 00e0c8e | 2015-05-13 16:30:09 +0300 | [diff] [blame] | 1146 | "iio triggered buffer setup failed\n"); |
| 1147 | goto err_trigger_unregister; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1148 | } |
| 1149 | |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 1150 | ret = pm_runtime_set_active(dev); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1151 | if (ret) |
Adriana Reus | 7d0ead5 | 2015-11-05 16:25:29 +0200 | [diff] [blame] | 1152 | goto err_buffer_cleanup; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1153 | |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 1154 | pm_runtime_enable(dev); |
| 1155 | pm_runtime_set_autosuspend_delay(dev, |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1156 | BMG160_AUTO_SUSPEND_DELAY_MS); |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 1157 | pm_runtime_use_autosuspend(dev); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1158 | |
Adriana Reus | 7d0ead5 | 2015-11-05 16:25:29 +0200 | [diff] [blame] | 1159 | ret = iio_device_register(indio_dev); |
| 1160 | if (ret < 0) { |
| 1161 | dev_err(dev, "unable to register iio device\n"); |
| 1162 | goto err_buffer_cleanup; |
| 1163 | } |
| 1164 | |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1165 | return 0; |
| 1166 | |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1167 | err_buffer_cleanup: |
Vlad Dogaru | 00e0c8e | 2015-05-13 16:30:09 +0300 | [diff] [blame] | 1168 | iio_triggered_buffer_cleanup(indio_dev); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1169 | err_trigger_unregister: |
| 1170 | if (data->dready_trig) |
| 1171 | iio_trigger_unregister(data->dready_trig); |
| 1172 | if (data->motion_trig) |
| 1173 | iio_trigger_unregister(data->motion_trig); |
| 1174 | |
| 1175 | return ret; |
| 1176 | } |
Markus Pargmann | 1342645 | 2015-08-19 14:12:45 +0200 | [diff] [blame] | 1177 | EXPORT_SYMBOL_GPL(bmg160_core_probe); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1178 | |
Markus Pargmann | 1342645 | 2015-08-19 14:12:45 +0200 | [diff] [blame] | 1179 | void bmg160_core_remove(struct device *dev) |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1180 | { |
Markus Pargmann | 1342645 | 2015-08-19 14:12:45 +0200 | [diff] [blame] | 1181 | struct iio_dev *indio_dev = dev_get_drvdata(dev); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1182 | struct bmg160_data *data = iio_priv(indio_dev); |
| 1183 | |
Adriana Reus | 7d0ead5 | 2015-11-05 16:25:29 +0200 | [diff] [blame] | 1184 | iio_device_unregister(indio_dev); |
| 1185 | |
Markus Pargmann | 1342645 | 2015-08-19 14:12:45 +0200 | [diff] [blame] | 1186 | pm_runtime_disable(dev); |
| 1187 | pm_runtime_set_suspended(dev); |
| 1188 | pm_runtime_put_noidle(dev); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1189 | |
Vlad Dogaru | 00e0c8e | 2015-05-13 16:30:09 +0300 | [diff] [blame] | 1190 | iio_triggered_buffer_cleanup(indio_dev); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1191 | |
| 1192 | if (data->dready_trig) { |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1193 | iio_trigger_unregister(data->dready_trig); |
| 1194 | iio_trigger_unregister(data->motion_trig); |
| 1195 | } |
| 1196 | |
| 1197 | mutex_lock(&data->mutex); |
| 1198 | bmg160_set_mode(data, BMG160_MODE_DEEP_SUSPEND); |
| 1199 | mutex_unlock(&data->mutex); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1200 | } |
Markus Pargmann | 1342645 | 2015-08-19 14:12:45 +0200 | [diff] [blame] | 1201 | EXPORT_SYMBOL_GPL(bmg160_core_remove); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1202 | |
| 1203 | #ifdef CONFIG_PM_SLEEP |
| 1204 | static int bmg160_suspend(struct device *dev) |
| 1205 | { |
Markus Pargmann | ebc6eb5 | 2015-08-12 16:50:06 +0200 | [diff] [blame] | 1206 | struct iio_dev *indio_dev = dev_get_drvdata(dev); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1207 | struct bmg160_data *data = iio_priv(indio_dev); |
| 1208 | |
| 1209 | mutex_lock(&data->mutex); |
| 1210 | bmg160_set_mode(data, BMG160_MODE_SUSPEND); |
| 1211 | mutex_unlock(&data->mutex); |
| 1212 | |
| 1213 | return 0; |
| 1214 | } |
| 1215 | |
| 1216 | static int bmg160_resume(struct device *dev) |
| 1217 | { |
Markus Pargmann | ebc6eb5 | 2015-08-12 16:50:06 +0200 | [diff] [blame] | 1218 | struct iio_dev *indio_dev = dev_get_drvdata(dev); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1219 | struct bmg160_data *data = iio_priv(indio_dev); |
| 1220 | |
| 1221 | mutex_lock(&data->mutex); |
| 1222 | if (data->dready_trigger_on || data->motion_trigger_on || |
| 1223 | data->ev_enable_state) |
| 1224 | bmg160_set_mode(data, BMG160_MODE_NORMAL); |
| 1225 | mutex_unlock(&data->mutex); |
| 1226 | |
| 1227 | return 0; |
| 1228 | } |
| 1229 | #endif |
| 1230 | |
Rafael J. Wysocki | 6f0a13f | 2014-12-04 01:08:13 +0100 | [diff] [blame] | 1231 | #ifdef CONFIG_PM |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1232 | static int bmg160_runtime_suspend(struct device *dev) |
| 1233 | { |
Markus Pargmann | ebc6eb5 | 2015-08-12 16:50:06 +0200 | [diff] [blame] | 1234 | struct iio_dev *indio_dev = dev_get_drvdata(dev); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1235 | struct bmg160_data *data = iio_priv(indio_dev); |
Srinivas Pandruvada | 10bef28 | 2014-10-10 20:33:25 -0700 | [diff] [blame] | 1236 | int ret; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1237 | |
Srinivas Pandruvada | 10bef28 | 2014-10-10 20:33:25 -0700 | [diff] [blame] | 1238 | ret = bmg160_set_mode(data, BMG160_MODE_SUSPEND); |
| 1239 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 1240 | dev_err(dev, "set mode failed\n"); |
Srinivas Pandruvada | 10bef28 | 2014-10-10 20:33:25 -0700 | [diff] [blame] | 1241 | return -EAGAIN; |
| 1242 | } |
| 1243 | |
| 1244 | return 0; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1245 | } |
| 1246 | |
| 1247 | static int bmg160_runtime_resume(struct device *dev) |
| 1248 | { |
Markus Pargmann | ebc6eb5 | 2015-08-12 16:50:06 +0200 | [diff] [blame] | 1249 | struct iio_dev *indio_dev = dev_get_drvdata(dev); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1250 | struct bmg160_data *data = iio_priv(indio_dev); |
| 1251 | int ret; |
| 1252 | |
| 1253 | ret = bmg160_set_mode(data, BMG160_MODE_NORMAL); |
| 1254 | if (ret < 0) |
| 1255 | return ret; |
| 1256 | |
| 1257 | msleep_interruptible(BMG160_MAX_STARTUP_TIME_MS); |
| 1258 | |
| 1259 | return 0; |
| 1260 | } |
| 1261 | #endif |
| 1262 | |
Markus Pargmann | 1342645 | 2015-08-19 14:12:45 +0200 | [diff] [blame] | 1263 | const struct dev_pm_ops bmg160_pm_ops = { |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1264 | SET_SYSTEM_SLEEP_PM_OPS(bmg160_suspend, bmg160_resume) |
| 1265 | SET_RUNTIME_PM_OPS(bmg160_runtime_suspend, |
| 1266 | bmg160_runtime_resume, NULL) |
| 1267 | }; |
Markus Pargmann | 1342645 | 2015-08-19 14:12:45 +0200 | [diff] [blame] | 1268 | EXPORT_SYMBOL_GPL(bmg160_pm_ops); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1269 | |
| 1270 | MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>"); |
| 1271 | MODULE_LICENSE("GPL v2"); |
| 1272 | MODULE_DESCRIPTION("BMG160 Gyro driver"); |