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> |
Markus Pargmann | 1342645 | 2015-08-19 14:12:45 +0200 | [diff] [blame] | 30 | #include "bmg160.h" |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 31 | |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 32 | #define BMG160_IRQ_NAME "bmg160_event" |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 33 | |
| 34 | #define BMG160_REG_CHIP_ID 0x00 |
| 35 | #define BMG160_CHIP_ID_VAL 0x0F |
| 36 | |
| 37 | #define BMG160_REG_PMU_LPW 0x11 |
| 38 | #define BMG160_MODE_NORMAL 0x00 |
| 39 | #define BMG160_MODE_DEEP_SUSPEND 0x20 |
| 40 | #define BMG160_MODE_SUSPEND 0x80 |
| 41 | |
| 42 | #define BMG160_REG_RANGE 0x0F |
| 43 | |
| 44 | #define BMG160_RANGE_2000DPS 0 |
| 45 | #define BMG160_RANGE_1000DPS 1 |
| 46 | #define BMG160_RANGE_500DPS 2 |
| 47 | #define BMG160_RANGE_250DPS 3 |
| 48 | #define BMG160_RANGE_125DPS 4 |
| 49 | |
| 50 | #define BMG160_REG_PMU_BW 0x10 |
| 51 | #define BMG160_NO_FILTER 0 |
| 52 | #define BMG160_DEF_BW 100 |
| 53 | |
| 54 | #define BMG160_REG_INT_MAP_0 0x17 |
| 55 | #define BMG160_INT_MAP_0_BIT_ANY BIT(1) |
| 56 | |
| 57 | #define BMG160_REG_INT_MAP_1 0x18 |
| 58 | #define BMG160_INT_MAP_1_BIT_NEW_DATA BIT(0) |
| 59 | |
| 60 | #define BMG160_REG_INT_RST_LATCH 0x21 |
| 61 | #define BMG160_INT_MODE_LATCH_RESET 0x80 |
| 62 | #define BMG160_INT_MODE_LATCH_INT 0x0F |
| 63 | #define BMG160_INT_MODE_NON_LATCH_INT 0x00 |
| 64 | |
| 65 | #define BMG160_REG_INT_EN_0 0x15 |
| 66 | #define BMG160_DATA_ENABLE_INT BIT(7) |
| 67 | |
Srinivas Pandruvada | 5af6b30 | 2014-10-10 20:33:26 -0700 | [diff] [blame] | 68 | #define BMG160_REG_INT_EN_1 0x16 |
| 69 | #define BMG160_INT1_BIT_OD BIT(1) |
| 70 | |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 71 | #define BMG160_REG_XOUT_L 0x02 |
| 72 | #define BMG160_AXIS_TO_REG(axis) (BMG160_REG_XOUT_L + (axis * 2)) |
| 73 | |
| 74 | #define BMG160_REG_SLOPE_THRES 0x1B |
| 75 | #define BMG160_SLOPE_THRES_MASK 0x0F |
| 76 | |
| 77 | #define BMG160_REG_MOTION_INTR 0x1C |
| 78 | #define BMG160_INT_MOTION_X BIT(0) |
| 79 | #define BMG160_INT_MOTION_Y BIT(1) |
| 80 | #define BMG160_INT_MOTION_Z BIT(2) |
| 81 | #define BMG160_ANY_DUR_MASK 0x30 |
| 82 | #define BMG160_ANY_DUR_SHIFT 4 |
| 83 | |
| 84 | #define BMG160_REG_INT_STATUS_2 0x0B |
| 85 | #define BMG160_ANY_MOTION_MASK 0x07 |
Srinivas Pandruvada | cb80f6a | 2014-10-10 20:33:27 -0700 | [diff] [blame] | 86 | #define BMG160_ANY_MOTION_BIT_X BIT(0) |
| 87 | #define BMG160_ANY_MOTION_BIT_Y BIT(1) |
| 88 | #define BMG160_ANY_MOTION_BIT_Z BIT(2) |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 89 | |
| 90 | #define BMG160_REG_TEMP 0x08 |
| 91 | #define BMG160_TEMP_CENTER_VAL 23 |
| 92 | |
| 93 | #define BMG160_MAX_STARTUP_TIME_MS 80 |
| 94 | |
| 95 | #define BMG160_AUTO_SUSPEND_DELAY_MS 2000 |
| 96 | |
| 97 | struct bmg160_data { |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 98 | struct regmap *regmap; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 99 | struct iio_trigger *dready_trig; |
| 100 | struct iio_trigger *motion_trig; |
| 101 | struct mutex mutex; |
| 102 | s16 buffer[8]; |
| 103 | u8 bw_bits; |
| 104 | u32 dps_range; |
| 105 | int ev_enable_state; |
| 106 | int slope_thres; |
| 107 | bool dready_trigger_on; |
| 108 | bool motion_trigger_on; |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 109 | int irq; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 110 | }; |
| 111 | |
| 112 | enum bmg160_axis { |
| 113 | AXIS_X, |
| 114 | AXIS_Y, |
| 115 | AXIS_Z, |
Irina Tirdea | ee8c541 | 2016-03-24 11:29:28 +0200 | [diff] [blame] | 116 | AXIS_MAX, |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 117 | }; |
| 118 | |
| 119 | static const struct { |
| 120 | int val; |
| 121 | int bw_bits; |
| 122 | } bmg160_samp_freq_table[] = { {100, 0x07}, |
| 123 | {200, 0x06}, |
| 124 | {400, 0x03}, |
| 125 | {1000, 0x02}, |
| 126 | {2000, 0x01} }; |
| 127 | |
| 128 | static const struct { |
| 129 | int scale; |
| 130 | int dps_range; |
| 131 | } bmg160_scale_table[] = { { 1065, BMG160_RANGE_2000DPS}, |
| 132 | { 532, BMG160_RANGE_1000DPS}, |
| 133 | { 266, BMG160_RANGE_500DPS}, |
| 134 | { 133, BMG160_RANGE_250DPS}, |
| 135 | { 66, BMG160_RANGE_125DPS} }; |
| 136 | |
| 137 | static int bmg160_set_mode(struct bmg160_data *data, u8 mode) |
| 138 | { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 139 | struct device *dev = regmap_get_device(data->regmap); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 140 | int ret; |
| 141 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 142 | ret = regmap_write(data->regmap, BMG160_REG_PMU_LPW, mode); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 143 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 144 | dev_err(dev, "Error writing reg_pmu_lpw\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 145 | return ret; |
| 146 | } |
| 147 | |
| 148 | return 0; |
| 149 | } |
| 150 | |
| 151 | static int bmg160_convert_freq_to_bit(int val) |
| 152 | { |
| 153 | int i; |
| 154 | |
| 155 | for (i = 0; i < ARRAY_SIZE(bmg160_samp_freq_table); ++i) { |
| 156 | if (bmg160_samp_freq_table[i].val == val) |
| 157 | return bmg160_samp_freq_table[i].bw_bits; |
| 158 | } |
| 159 | |
| 160 | return -EINVAL; |
| 161 | } |
| 162 | |
| 163 | static int bmg160_set_bw(struct bmg160_data *data, int val) |
| 164 | { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 165 | struct device *dev = regmap_get_device(data->regmap); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 166 | int ret; |
| 167 | int bw_bits; |
| 168 | |
| 169 | bw_bits = bmg160_convert_freq_to_bit(val); |
| 170 | if (bw_bits < 0) |
| 171 | return bw_bits; |
| 172 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 173 | ret = regmap_write(data->regmap, BMG160_REG_PMU_BW, bw_bits); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 174 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 175 | dev_err(dev, "Error writing reg_pmu_bw\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 176 | return ret; |
| 177 | } |
| 178 | |
| 179 | data->bw_bits = bw_bits; |
| 180 | |
| 181 | return 0; |
| 182 | } |
| 183 | |
| 184 | static int bmg160_chip_init(struct bmg160_data *data) |
| 185 | { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 186 | struct device *dev = regmap_get_device(data->regmap); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 187 | int ret; |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 188 | unsigned int val; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 189 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 190 | ret = regmap_read(data->regmap, BMG160_REG_CHIP_ID, &val); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 191 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 192 | dev_err(dev, "Error reading reg_chip_id\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 193 | return ret; |
| 194 | } |
| 195 | |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 196 | dev_dbg(dev, "Chip Id %x\n", val); |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 197 | if (val != BMG160_CHIP_ID_VAL) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 198 | dev_err(dev, "invalid chip %x\n", val); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 199 | return -ENODEV; |
| 200 | } |
| 201 | |
| 202 | ret = bmg160_set_mode(data, BMG160_MODE_NORMAL); |
| 203 | if (ret < 0) |
| 204 | return ret; |
| 205 | |
| 206 | /* Wait upto 500 ms to be ready after changing mode */ |
| 207 | usleep_range(500, 1000); |
| 208 | |
| 209 | /* Set Bandwidth */ |
| 210 | ret = bmg160_set_bw(data, BMG160_DEF_BW); |
| 211 | if (ret < 0) |
| 212 | return ret; |
| 213 | |
| 214 | /* Set Default Range */ |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 215 | ret = regmap_write(data->regmap, BMG160_REG_RANGE, BMG160_RANGE_500DPS); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 216 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 217 | dev_err(dev, "Error writing reg_range\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 218 | return ret; |
| 219 | } |
| 220 | data->dps_range = BMG160_RANGE_500DPS; |
| 221 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 222 | ret = regmap_read(data->regmap, BMG160_REG_SLOPE_THRES, &val); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 223 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 224 | dev_err(dev, "Error reading reg_slope_thres\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 225 | return ret; |
| 226 | } |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 227 | data->slope_thres = val; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 228 | |
| 229 | /* Set default interrupt mode */ |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 230 | ret = regmap_update_bits(data->regmap, BMG160_REG_INT_EN_1, |
| 231 | BMG160_INT1_BIT_OD, 0); |
Srinivas Pandruvada | 5af6b30 | 2014-10-10 20:33:26 -0700 | [diff] [blame] | 232 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 233 | dev_err(dev, "Error updating bits in reg_int_en_1\n"); |
Srinivas Pandruvada | 5af6b30 | 2014-10-10 20:33:26 -0700 | [diff] [blame] | 234 | return ret; |
| 235 | } |
| 236 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 237 | ret = regmap_write(data->regmap, BMG160_REG_INT_RST_LATCH, |
| 238 | BMG160_INT_MODE_LATCH_INT | |
| 239 | BMG160_INT_MODE_LATCH_RESET); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 240 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 241 | dev_err(dev, |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 242 | "Error writing reg_motion_intr\n"); |
| 243 | return ret; |
| 244 | } |
| 245 | |
| 246 | return 0; |
| 247 | } |
| 248 | |
| 249 | static int bmg160_set_power_state(struct bmg160_data *data, bool on) |
| 250 | { |
Rafael J. Wysocki | 6f0a13f | 2014-12-04 01:08:13 +0100 | [diff] [blame] | 251 | #ifdef CONFIG_PM |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 252 | struct device *dev = regmap_get_device(data->regmap); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 253 | int ret; |
| 254 | |
| 255 | if (on) |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 256 | ret = pm_runtime_get_sync(dev); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 257 | else { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 258 | pm_runtime_mark_last_busy(dev); |
| 259 | ret = pm_runtime_put_autosuspend(dev); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 260 | } |
| 261 | |
| 262 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 263 | dev_err(dev, "Failed: bmg160_set_power_state for %d\n", on); |
| 264 | |
Srinivas Pandruvada | 10bef28 | 2014-10-10 20:33:25 -0700 | [diff] [blame] | 265 | if (on) |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 266 | pm_runtime_put_noidle(dev); |
Srinivas Pandruvada | 10bef28 | 2014-10-10 20:33:25 -0700 | [diff] [blame] | 267 | |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 268 | return ret; |
| 269 | } |
Irina Tirdea | ef1c6b2 | 2014-08-09 15:05:00 +0100 | [diff] [blame] | 270 | #endif |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 271 | |
| 272 | return 0; |
| 273 | } |
| 274 | |
| 275 | static int bmg160_setup_any_motion_interrupt(struct bmg160_data *data, |
| 276 | bool status) |
| 277 | { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 278 | struct device *dev = regmap_get_device(data->regmap); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 279 | int ret; |
| 280 | |
| 281 | /* Enable/Disable INT_MAP0 mapping */ |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 282 | ret = regmap_update_bits(data->regmap, BMG160_REG_INT_MAP_0, |
| 283 | BMG160_INT_MAP_0_BIT_ANY, |
| 284 | (status ? BMG160_INT_MAP_0_BIT_ANY : 0)); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 285 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 286 | dev_err(dev, "Error updating bits reg_int_map0\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 287 | return ret; |
| 288 | } |
| 289 | |
| 290 | /* Enable/Disable slope interrupts */ |
| 291 | if (status) { |
| 292 | /* Update slope thres */ |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 293 | ret = regmap_write(data->regmap, BMG160_REG_SLOPE_THRES, |
| 294 | data->slope_thres); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 295 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 296 | dev_err(dev, "Error writing reg_slope_thres\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 297 | return ret; |
| 298 | } |
| 299 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 300 | ret = regmap_write(data->regmap, BMG160_REG_MOTION_INTR, |
| 301 | BMG160_INT_MOTION_X | BMG160_INT_MOTION_Y | |
| 302 | BMG160_INT_MOTION_Z); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 303 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 304 | dev_err(dev, "Error writing reg_motion_intr\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 305 | return ret; |
| 306 | } |
| 307 | |
| 308 | /* |
| 309 | * New data interrupt is always non-latched, |
| 310 | * which will have higher priority, so no need |
| 311 | * to set latched mode, we will be flooded anyway with INTR |
| 312 | */ |
| 313 | if (!data->dready_trigger_on) { |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 314 | ret = regmap_write(data->regmap, |
| 315 | BMG160_REG_INT_RST_LATCH, |
| 316 | BMG160_INT_MODE_LATCH_INT | |
| 317 | BMG160_INT_MODE_LATCH_RESET); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 318 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 319 | dev_err(dev, "Error writing reg_rst_latch\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 320 | return ret; |
| 321 | } |
| 322 | } |
| 323 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 324 | ret = regmap_write(data->regmap, BMG160_REG_INT_EN_0, |
| 325 | BMG160_DATA_ENABLE_INT); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 326 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 327 | } else { |
| 328 | ret = regmap_write(data->regmap, BMG160_REG_INT_EN_0, 0); |
| 329 | } |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 330 | |
| 331 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 332 | dev_err(dev, "Error writing reg_int_en0\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 333 | return ret; |
| 334 | } |
| 335 | |
| 336 | return 0; |
| 337 | } |
| 338 | |
| 339 | static int bmg160_setup_new_data_interrupt(struct bmg160_data *data, |
| 340 | bool status) |
| 341 | { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 342 | struct device *dev = regmap_get_device(data->regmap); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 343 | int ret; |
| 344 | |
| 345 | /* Enable/Disable INT_MAP1 mapping */ |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 346 | ret = regmap_update_bits(data->regmap, BMG160_REG_INT_MAP_1, |
| 347 | BMG160_INT_MAP_1_BIT_NEW_DATA, |
| 348 | (status ? BMG160_INT_MAP_1_BIT_NEW_DATA : 0)); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 349 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 350 | dev_err(dev, "Error updating bits in reg_int_map1\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 351 | return ret; |
| 352 | } |
| 353 | |
| 354 | if (status) { |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 355 | ret = regmap_write(data->regmap, BMG160_REG_INT_RST_LATCH, |
| 356 | BMG160_INT_MODE_NON_LATCH_INT | |
| 357 | BMG160_INT_MODE_LATCH_RESET); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 358 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 359 | dev_err(dev, "Error writing reg_rst_latch\n"); |
| 360 | return ret; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 361 | } |
| 362 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 363 | ret = regmap_write(data->regmap, BMG160_REG_INT_EN_0, |
| 364 | BMG160_DATA_ENABLE_INT); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 365 | |
| 366 | } else { |
| 367 | /* Restore interrupt mode */ |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 368 | ret = regmap_write(data->regmap, BMG160_REG_INT_RST_LATCH, |
| 369 | BMG160_INT_MODE_LATCH_INT | |
| 370 | BMG160_INT_MODE_LATCH_RESET); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 371 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 372 | dev_err(dev, "Error writing reg_rst_latch\n"); |
| 373 | return ret; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 374 | } |
| 375 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 376 | ret = regmap_write(data->regmap, BMG160_REG_INT_EN_0, 0); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 377 | } |
| 378 | |
| 379 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 380 | dev_err(dev, "Error writing reg_int_en0\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 381 | return ret; |
| 382 | } |
| 383 | |
| 384 | return 0; |
| 385 | } |
| 386 | |
| 387 | static int bmg160_get_bw(struct bmg160_data *data, int *val) |
| 388 | { |
| 389 | int i; |
| 390 | |
| 391 | for (i = 0; i < ARRAY_SIZE(bmg160_samp_freq_table); ++i) { |
| 392 | if (bmg160_samp_freq_table[i].bw_bits == data->bw_bits) { |
| 393 | *val = bmg160_samp_freq_table[i].val; |
| 394 | return IIO_VAL_INT; |
| 395 | } |
| 396 | } |
| 397 | |
| 398 | return -EINVAL; |
| 399 | } |
| 400 | |
| 401 | static int bmg160_set_scale(struct bmg160_data *data, int val) |
| 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, i; |
| 405 | |
| 406 | for (i = 0; i < ARRAY_SIZE(bmg160_scale_table); ++i) { |
| 407 | if (bmg160_scale_table[i].scale == val) { |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 408 | ret = regmap_write(data->regmap, BMG160_REG_RANGE, |
| 409 | bmg160_scale_table[i].dps_range); |
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 writing reg_range\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 412 | return ret; |
| 413 | } |
| 414 | data->dps_range = bmg160_scale_table[i].dps_range; |
| 415 | return 0; |
| 416 | } |
| 417 | } |
| 418 | |
| 419 | return -EINVAL; |
| 420 | } |
| 421 | |
| 422 | static int bmg160_get_temp(struct bmg160_data *data, int *val) |
| 423 | { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 424 | struct device *dev = regmap_get_device(data->regmap); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 425 | int ret; |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 426 | unsigned int raw_val; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 427 | |
| 428 | mutex_lock(&data->mutex); |
| 429 | ret = bmg160_set_power_state(data, true); |
| 430 | if (ret < 0) { |
| 431 | mutex_unlock(&data->mutex); |
| 432 | return ret; |
| 433 | } |
| 434 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 435 | ret = regmap_read(data->regmap, BMG160_REG_TEMP, &raw_val); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 436 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 437 | dev_err(dev, "Error reading reg_temp\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 438 | bmg160_set_power_state(data, false); |
| 439 | mutex_unlock(&data->mutex); |
| 440 | return ret; |
| 441 | } |
| 442 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 443 | *val = sign_extend32(raw_val, 7); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 444 | ret = bmg160_set_power_state(data, false); |
| 445 | mutex_unlock(&data->mutex); |
| 446 | if (ret < 0) |
| 447 | return ret; |
| 448 | |
| 449 | return IIO_VAL_INT; |
| 450 | } |
| 451 | |
| 452 | static int bmg160_get_axis(struct bmg160_data *data, int axis, int *val) |
| 453 | { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 454 | struct device *dev = regmap_get_device(data->regmap); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 455 | int ret; |
Irina Tirdea | 95e7ff0 | 2016-03-29 15:37:30 +0300 | [diff] [blame] | 456 | __le16 raw_val; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 457 | |
| 458 | mutex_lock(&data->mutex); |
| 459 | ret = bmg160_set_power_state(data, true); |
| 460 | if (ret < 0) { |
| 461 | mutex_unlock(&data->mutex); |
| 462 | return ret; |
| 463 | } |
| 464 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 465 | 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] | 466 | sizeof(raw_val)); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 467 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 468 | dev_err(dev, "Error reading axis %d\n", axis); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 469 | bmg160_set_power_state(data, false); |
| 470 | mutex_unlock(&data->mutex); |
| 471 | return ret; |
| 472 | } |
| 473 | |
Irina Tirdea | 95e7ff0 | 2016-03-29 15:37:30 +0300 | [diff] [blame] | 474 | *val = sign_extend32(le16_to_cpu(raw_val), 15); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 475 | ret = bmg160_set_power_state(data, false); |
| 476 | mutex_unlock(&data->mutex); |
| 477 | if (ret < 0) |
| 478 | return ret; |
| 479 | |
| 480 | return IIO_VAL_INT; |
| 481 | } |
| 482 | |
| 483 | static int bmg160_read_raw(struct iio_dev *indio_dev, |
| 484 | struct iio_chan_spec const *chan, |
| 485 | int *val, int *val2, long mask) |
| 486 | { |
| 487 | struct bmg160_data *data = iio_priv(indio_dev); |
| 488 | int ret; |
| 489 | |
| 490 | switch (mask) { |
| 491 | case IIO_CHAN_INFO_RAW: |
| 492 | switch (chan->type) { |
| 493 | case IIO_TEMP: |
| 494 | return bmg160_get_temp(data, val); |
| 495 | case IIO_ANGL_VEL: |
| 496 | if (iio_buffer_enabled(indio_dev)) |
| 497 | return -EBUSY; |
| 498 | else |
| 499 | return bmg160_get_axis(data, chan->scan_index, |
| 500 | val); |
| 501 | default: |
| 502 | return -EINVAL; |
| 503 | } |
| 504 | case IIO_CHAN_INFO_OFFSET: |
| 505 | if (chan->type == IIO_TEMP) { |
| 506 | *val = BMG160_TEMP_CENTER_VAL; |
| 507 | return IIO_VAL_INT; |
| 508 | } else |
| 509 | return -EINVAL; |
| 510 | case IIO_CHAN_INFO_SCALE: |
| 511 | *val = 0; |
| 512 | switch (chan->type) { |
| 513 | case IIO_TEMP: |
| 514 | *val2 = 500000; |
| 515 | return IIO_VAL_INT_PLUS_MICRO; |
| 516 | case IIO_ANGL_VEL: |
| 517 | { |
| 518 | int i; |
| 519 | |
| 520 | for (i = 0; i < ARRAY_SIZE(bmg160_scale_table); ++i) { |
| 521 | if (bmg160_scale_table[i].dps_range == |
| 522 | data->dps_range) { |
| 523 | *val2 = bmg160_scale_table[i].scale; |
| 524 | return IIO_VAL_INT_PLUS_MICRO; |
| 525 | } |
| 526 | } |
| 527 | return -EINVAL; |
| 528 | } |
| 529 | default: |
| 530 | return -EINVAL; |
| 531 | } |
| 532 | case IIO_CHAN_INFO_SAMP_FREQ: |
| 533 | *val2 = 0; |
| 534 | mutex_lock(&data->mutex); |
| 535 | ret = bmg160_get_bw(data, val); |
| 536 | mutex_unlock(&data->mutex); |
| 537 | return ret; |
| 538 | default: |
| 539 | return -EINVAL; |
| 540 | } |
| 541 | } |
| 542 | |
| 543 | static int bmg160_write_raw(struct iio_dev *indio_dev, |
| 544 | struct iio_chan_spec const *chan, |
| 545 | int val, int val2, long mask) |
| 546 | { |
| 547 | struct bmg160_data *data = iio_priv(indio_dev); |
| 548 | int ret; |
| 549 | |
| 550 | switch (mask) { |
| 551 | case IIO_CHAN_INFO_SAMP_FREQ: |
| 552 | mutex_lock(&data->mutex); |
| 553 | /* |
| 554 | * Section 4.2 of spec |
| 555 | * In suspend mode, the only supported operations are reading |
| 556 | * registers as well as writing to the (0x14) softreset |
| 557 | * register. Since we will be in suspend mode by default, change |
| 558 | * mode to power on for other writes. |
| 559 | */ |
| 560 | ret = bmg160_set_power_state(data, true); |
| 561 | if (ret < 0) { |
| 562 | mutex_unlock(&data->mutex); |
| 563 | return ret; |
| 564 | } |
| 565 | ret = bmg160_set_bw(data, val); |
| 566 | if (ret < 0) { |
| 567 | bmg160_set_power_state(data, false); |
| 568 | mutex_unlock(&data->mutex); |
| 569 | return ret; |
| 570 | } |
| 571 | ret = bmg160_set_power_state(data, false); |
| 572 | mutex_unlock(&data->mutex); |
| 573 | return ret; |
| 574 | case IIO_CHAN_INFO_SCALE: |
| 575 | if (val) |
| 576 | return -EINVAL; |
| 577 | |
| 578 | mutex_lock(&data->mutex); |
| 579 | /* Refer to comments above for the suspend mode ops */ |
| 580 | ret = bmg160_set_power_state(data, true); |
| 581 | if (ret < 0) { |
| 582 | mutex_unlock(&data->mutex); |
| 583 | return ret; |
| 584 | } |
| 585 | ret = bmg160_set_scale(data, val2); |
| 586 | if (ret < 0) { |
| 587 | bmg160_set_power_state(data, false); |
| 588 | mutex_unlock(&data->mutex); |
| 589 | return ret; |
| 590 | } |
| 591 | ret = bmg160_set_power_state(data, false); |
| 592 | mutex_unlock(&data->mutex); |
| 593 | return ret; |
| 594 | default: |
| 595 | return -EINVAL; |
| 596 | } |
| 597 | |
| 598 | return -EINVAL; |
| 599 | } |
| 600 | |
| 601 | static int bmg160_read_event(struct iio_dev *indio_dev, |
| 602 | const struct iio_chan_spec *chan, |
| 603 | enum iio_event_type type, |
| 604 | enum iio_event_direction dir, |
| 605 | enum iio_event_info info, |
| 606 | int *val, int *val2) |
| 607 | { |
| 608 | struct bmg160_data *data = iio_priv(indio_dev); |
| 609 | |
| 610 | *val2 = 0; |
| 611 | switch (info) { |
| 612 | case IIO_EV_INFO_VALUE: |
| 613 | *val = data->slope_thres & BMG160_SLOPE_THRES_MASK; |
| 614 | break; |
| 615 | default: |
| 616 | return -EINVAL; |
| 617 | } |
| 618 | |
| 619 | return IIO_VAL_INT; |
| 620 | } |
| 621 | |
| 622 | static int bmg160_write_event(struct iio_dev *indio_dev, |
| 623 | const struct iio_chan_spec *chan, |
| 624 | enum iio_event_type type, |
| 625 | enum iio_event_direction dir, |
| 626 | enum iio_event_info info, |
| 627 | int val, int val2) |
| 628 | { |
| 629 | struct bmg160_data *data = iio_priv(indio_dev); |
| 630 | |
| 631 | switch (info) { |
| 632 | case IIO_EV_INFO_VALUE: |
| 633 | if (data->ev_enable_state) |
| 634 | return -EBUSY; |
| 635 | data->slope_thres &= ~BMG160_SLOPE_THRES_MASK; |
| 636 | data->slope_thres |= (val & BMG160_SLOPE_THRES_MASK); |
| 637 | break; |
| 638 | default: |
| 639 | return -EINVAL; |
| 640 | } |
| 641 | |
| 642 | return 0; |
| 643 | } |
| 644 | |
| 645 | static int bmg160_read_event_config(struct iio_dev *indio_dev, |
| 646 | const struct iio_chan_spec *chan, |
| 647 | enum iio_event_type type, |
| 648 | enum iio_event_direction dir) |
| 649 | { |
| 650 | |
| 651 | struct bmg160_data *data = iio_priv(indio_dev); |
| 652 | |
| 653 | return data->ev_enable_state; |
| 654 | } |
| 655 | |
| 656 | static int bmg160_write_event_config(struct iio_dev *indio_dev, |
| 657 | const struct iio_chan_spec *chan, |
| 658 | enum iio_event_type type, |
| 659 | enum iio_event_direction dir, |
| 660 | int state) |
| 661 | { |
| 662 | struct bmg160_data *data = iio_priv(indio_dev); |
| 663 | int ret; |
| 664 | |
| 665 | if (state && data->ev_enable_state) |
| 666 | return 0; |
| 667 | |
| 668 | mutex_lock(&data->mutex); |
| 669 | |
| 670 | if (!state && data->motion_trigger_on) { |
| 671 | data->ev_enable_state = 0; |
| 672 | mutex_unlock(&data->mutex); |
| 673 | return 0; |
| 674 | } |
| 675 | /* |
| 676 | * We will expect the enable and disable to do operation in |
| 677 | * in reverse order. This will happen here anyway as our |
| 678 | * resume operation uses sync mode runtime pm calls, the |
| 679 | * suspend operation will be delayed by autosuspend delay |
| 680 | * So the disable operation will still happen in reverse of |
| 681 | * enable operation. When runtime pm is disabled the mode |
| 682 | * is always on so sequence doesn't matter |
| 683 | */ |
| 684 | ret = bmg160_set_power_state(data, state); |
| 685 | if (ret < 0) { |
| 686 | mutex_unlock(&data->mutex); |
| 687 | return ret; |
| 688 | } |
| 689 | |
| 690 | ret = bmg160_setup_any_motion_interrupt(data, state); |
| 691 | if (ret < 0) { |
Srinivas Pandruvada | 10bef28 | 2014-10-10 20:33:25 -0700 | [diff] [blame] | 692 | bmg160_set_power_state(data, false); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 693 | mutex_unlock(&data->mutex); |
| 694 | return ret; |
| 695 | } |
| 696 | |
| 697 | data->ev_enable_state = state; |
| 698 | mutex_unlock(&data->mutex); |
| 699 | |
| 700 | return 0; |
| 701 | } |
| 702 | |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 703 | static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("100 200 400 1000 2000"); |
| 704 | |
| 705 | static IIO_CONST_ATTR(in_anglvel_scale_available, |
| 706 | "0.001065 0.000532 0.000266 0.000133 0.000066"); |
| 707 | |
| 708 | static struct attribute *bmg160_attributes[] = { |
| 709 | &iio_const_attr_sampling_frequency_available.dev_attr.attr, |
| 710 | &iio_const_attr_in_anglvel_scale_available.dev_attr.attr, |
| 711 | NULL, |
| 712 | }; |
| 713 | |
| 714 | static const struct attribute_group bmg160_attrs_group = { |
| 715 | .attrs = bmg160_attributes, |
| 716 | }; |
| 717 | |
| 718 | static const struct iio_event_spec bmg160_event = { |
| 719 | .type = IIO_EV_TYPE_ROC, |
Srinivas Pandruvada | 6896ab3 | 2014-10-10 20:33:28 -0700 | [diff] [blame] | 720 | .dir = IIO_EV_DIR_EITHER, |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 721 | .mask_shared_by_type = BIT(IIO_EV_INFO_VALUE) | |
| 722 | BIT(IIO_EV_INFO_ENABLE) |
| 723 | }; |
| 724 | |
| 725 | #define BMG160_CHANNEL(_axis) { \ |
| 726 | .type = IIO_ANGL_VEL, \ |
| 727 | .modified = 1, \ |
| 728 | .channel2 = IIO_MOD_##_axis, \ |
| 729 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ |
| 730 | .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \ |
| 731 | BIT(IIO_CHAN_INFO_SAMP_FREQ), \ |
| 732 | .scan_index = AXIS_##_axis, \ |
| 733 | .scan_type = { \ |
| 734 | .sign = 's', \ |
| 735 | .realbits = 16, \ |
| 736 | .storagebits = 16, \ |
Irina Tirdea | 7e3d1eb | 2016-03-24 11:29:29 +0200 | [diff] [blame] | 737 | .endianness = IIO_LE, \ |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 738 | }, \ |
| 739 | .event_spec = &bmg160_event, \ |
| 740 | .num_event_specs = 1 \ |
| 741 | } |
| 742 | |
| 743 | static const struct iio_chan_spec bmg160_channels[] = { |
| 744 | { |
| 745 | .type = IIO_TEMP, |
| 746 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | |
| 747 | BIT(IIO_CHAN_INFO_SCALE) | |
| 748 | BIT(IIO_CHAN_INFO_OFFSET), |
| 749 | .scan_index = -1, |
| 750 | }, |
| 751 | BMG160_CHANNEL(X), |
| 752 | BMG160_CHANNEL(Y), |
| 753 | BMG160_CHANNEL(Z), |
| 754 | IIO_CHAN_SOFT_TIMESTAMP(3), |
| 755 | }; |
| 756 | |
| 757 | static const struct iio_info bmg160_info = { |
| 758 | .attrs = &bmg160_attrs_group, |
| 759 | .read_raw = bmg160_read_raw, |
| 760 | .write_raw = bmg160_write_raw, |
| 761 | .read_event_value = bmg160_read_event, |
| 762 | .write_event_value = bmg160_write_event, |
| 763 | .write_event_config = bmg160_write_event_config, |
| 764 | .read_event_config = bmg160_read_event_config, |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 765 | .driver_module = THIS_MODULE, |
| 766 | }; |
| 767 | |
Irina Tirdea | ee8c541 | 2016-03-24 11:29:28 +0200 | [diff] [blame] | 768 | static const unsigned long bmg160_accel_scan_masks[] = { |
| 769 | BIT(AXIS_X) | BIT(AXIS_Y) | BIT(AXIS_Z), |
| 770 | 0}; |
| 771 | |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 772 | static irqreturn_t bmg160_trigger_handler(int irq, void *p) |
| 773 | { |
| 774 | struct iio_poll_func *pf = p; |
| 775 | struct iio_dev *indio_dev = pf->indio_dev; |
| 776 | struct bmg160_data *data = iio_priv(indio_dev); |
Irina Tirdea | 7e3d1eb | 2016-03-24 11:29:29 +0200 | [diff] [blame] | 777 | int ret; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 778 | |
| 779 | mutex_lock(&data->mutex); |
Irina Tirdea | 7e3d1eb | 2016-03-24 11:29:29 +0200 | [diff] [blame] | 780 | ret = regmap_bulk_read(data->regmap, BMG160_REG_XOUT_L, |
| 781 | data->buffer, AXIS_MAX * 2); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 782 | mutex_unlock(&data->mutex); |
Irina Tirdea | 7e3d1eb | 2016-03-24 11:29:29 +0200 | [diff] [blame] | 783 | if (ret < 0) |
| 784 | goto err; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 785 | |
| 786 | iio_push_to_buffers_with_timestamp(indio_dev, data->buffer, |
Vlad Dogaru | eb21910 | 2015-05-13 16:30:08 +0300 | [diff] [blame] | 787 | pf->timestamp); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 788 | err: |
| 789 | iio_trigger_notify_done(indio_dev->trig); |
| 790 | |
| 791 | return IRQ_HANDLED; |
| 792 | } |
| 793 | |
| 794 | static int bmg160_trig_try_reen(struct iio_trigger *trig) |
| 795 | { |
| 796 | struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); |
| 797 | struct bmg160_data *data = iio_priv(indio_dev); |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 798 | struct device *dev = regmap_get_device(data->regmap); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 799 | int ret; |
| 800 | |
| 801 | /* new data interrupts don't need ack */ |
| 802 | if (data->dready_trigger_on) |
| 803 | return 0; |
| 804 | |
| 805 | /* Set latched mode interrupt and clear any latched interrupt */ |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 806 | ret = regmap_write(data->regmap, BMG160_REG_INT_RST_LATCH, |
| 807 | BMG160_INT_MODE_LATCH_INT | |
| 808 | BMG160_INT_MODE_LATCH_RESET); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 809 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 810 | dev_err(dev, "Error writing reg_rst_latch\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 811 | return ret; |
| 812 | } |
| 813 | |
| 814 | return 0; |
| 815 | } |
| 816 | |
| 817 | static int bmg160_data_rdy_trigger_set_state(struct iio_trigger *trig, |
| 818 | bool state) |
| 819 | { |
| 820 | struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); |
| 821 | struct bmg160_data *data = iio_priv(indio_dev); |
| 822 | int ret; |
| 823 | |
| 824 | mutex_lock(&data->mutex); |
| 825 | |
| 826 | if (!state && data->ev_enable_state && data->motion_trigger_on) { |
| 827 | data->motion_trigger_on = false; |
| 828 | mutex_unlock(&data->mutex); |
| 829 | return 0; |
| 830 | } |
| 831 | |
| 832 | /* |
| 833 | * Refer to comment in bmg160_write_event_config for |
| 834 | * enable/disable operation order |
| 835 | */ |
| 836 | ret = bmg160_set_power_state(data, state); |
| 837 | if (ret < 0) { |
| 838 | mutex_unlock(&data->mutex); |
| 839 | return ret; |
| 840 | } |
| 841 | if (data->motion_trig == trig) |
| 842 | ret = bmg160_setup_any_motion_interrupt(data, state); |
| 843 | else |
| 844 | ret = bmg160_setup_new_data_interrupt(data, state); |
| 845 | if (ret < 0) { |
Srinivas Pandruvada | 10bef28 | 2014-10-10 20:33:25 -0700 | [diff] [blame] | 846 | bmg160_set_power_state(data, false); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 847 | mutex_unlock(&data->mutex); |
| 848 | return ret; |
| 849 | } |
| 850 | if (data->motion_trig == trig) |
| 851 | data->motion_trigger_on = state; |
| 852 | else |
| 853 | data->dready_trigger_on = state; |
| 854 | |
| 855 | mutex_unlock(&data->mutex); |
| 856 | |
| 857 | return 0; |
| 858 | } |
| 859 | |
| 860 | static const struct iio_trigger_ops bmg160_trigger_ops = { |
| 861 | .set_trigger_state = bmg160_data_rdy_trigger_set_state, |
| 862 | .try_reenable = bmg160_trig_try_reen, |
| 863 | .owner = THIS_MODULE, |
| 864 | }; |
| 865 | |
| 866 | static irqreturn_t bmg160_event_handler(int irq, void *private) |
| 867 | { |
| 868 | struct iio_dev *indio_dev = private; |
| 869 | struct bmg160_data *data = iio_priv(indio_dev); |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 870 | struct device *dev = regmap_get_device(data->regmap); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 871 | int ret; |
| 872 | int dir; |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 873 | unsigned int val; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 874 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 875 | ret = regmap_read(data->regmap, BMG160_REG_INT_STATUS_2, &val); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 876 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 877 | dev_err(dev, "Error reading reg_int_status2\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 878 | goto ack_intr_status; |
| 879 | } |
| 880 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 881 | if (val & 0x08) |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 882 | dir = IIO_EV_DIR_RISING; |
| 883 | else |
| 884 | dir = IIO_EV_DIR_FALLING; |
| 885 | |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 886 | if (val & BMG160_ANY_MOTION_BIT_X) |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 887 | iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL, |
| 888 | 0, |
Srinivas Pandruvada | cb80f6a | 2014-10-10 20:33:27 -0700 | [diff] [blame] | 889 | IIO_MOD_X, |
| 890 | IIO_EV_TYPE_ROC, |
| 891 | dir), |
Vlad Dogaru | eb21910 | 2015-05-13 16:30:08 +0300 | [diff] [blame] | 892 | iio_get_time_ns()); |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 893 | if (val & BMG160_ANY_MOTION_BIT_Y) |
Srinivas Pandruvada | cb80f6a | 2014-10-10 20:33:27 -0700 | [diff] [blame] | 894 | iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL, |
| 895 | 0, |
| 896 | IIO_MOD_Y, |
| 897 | IIO_EV_TYPE_ROC, |
| 898 | dir), |
Vlad Dogaru | eb21910 | 2015-05-13 16:30:08 +0300 | [diff] [blame] | 899 | iio_get_time_ns()); |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 900 | if (val & BMG160_ANY_MOTION_BIT_Z) |
Srinivas Pandruvada | cb80f6a | 2014-10-10 20:33:27 -0700 | [diff] [blame] | 901 | iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL, |
| 902 | 0, |
| 903 | IIO_MOD_Z, |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 904 | IIO_EV_TYPE_ROC, |
| 905 | dir), |
Vlad Dogaru | eb21910 | 2015-05-13 16:30:08 +0300 | [diff] [blame] | 906 | iio_get_time_ns()); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 907 | |
| 908 | ack_intr_status: |
| 909 | if (!data->dready_trigger_on) { |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 910 | ret = regmap_write(data->regmap, BMG160_REG_INT_RST_LATCH, |
| 911 | BMG160_INT_MODE_LATCH_INT | |
| 912 | BMG160_INT_MODE_LATCH_RESET); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 913 | if (ret < 0) |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 914 | dev_err(dev, "Error writing reg_rst_latch\n"); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 915 | } |
| 916 | |
| 917 | return IRQ_HANDLED; |
| 918 | } |
| 919 | |
| 920 | static irqreturn_t bmg160_data_rdy_trig_poll(int irq, void *private) |
| 921 | { |
| 922 | struct iio_dev *indio_dev = private; |
| 923 | struct bmg160_data *data = iio_priv(indio_dev); |
| 924 | |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 925 | if (data->dready_trigger_on) |
| 926 | iio_trigger_poll(data->dready_trig); |
| 927 | else if (data->motion_trigger_on) |
| 928 | iio_trigger_poll(data->motion_trig); |
| 929 | |
| 930 | if (data->ev_enable_state) |
| 931 | return IRQ_WAKE_THREAD; |
| 932 | else |
| 933 | return IRQ_HANDLED; |
| 934 | |
| 935 | } |
| 936 | |
Vlad Dogaru | 00e0c8e | 2015-05-13 16:30:09 +0300 | [diff] [blame] | 937 | static int bmg160_buffer_preenable(struct iio_dev *indio_dev) |
| 938 | { |
| 939 | struct bmg160_data *data = iio_priv(indio_dev); |
| 940 | |
| 941 | return bmg160_set_power_state(data, true); |
| 942 | } |
| 943 | |
| 944 | static int bmg160_buffer_postdisable(struct iio_dev *indio_dev) |
| 945 | { |
| 946 | struct bmg160_data *data = iio_priv(indio_dev); |
| 947 | |
| 948 | return bmg160_set_power_state(data, false); |
| 949 | } |
| 950 | |
| 951 | static const struct iio_buffer_setup_ops bmg160_buffer_setup_ops = { |
| 952 | .preenable = bmg160_buffer_preenable, |
| 953 | .postenable = iio_triggered_buffer_postenable, |
| 954 | .predisable = iio_triggered_buffer_predisable, |
| 955 | .postdisable = bmg160_buffer_postdisable, |
| 956 | }; |
| 957 | |
Irina Tirdea | 3a0888e | 2014-02-09 11:59:00 +0000 | [diff] [blame] | 958 | static const char *bmg160_match_acpi_device(struct device *dev) |
| 959 | { |
| 960 | const struct acpi_device_id *id; |
| 961 | |
| 962 | id = acpi_match_device(dev->driver->acpi_match_table, dev); |
| 963 | if (!id) |
| 964 | return NULL; |
| 965 | |
| 966 | return dev_name(dev); |
| 967 | } |
| 968 | |
Markus Pargmann | 1342645 | 2015-08-19 14:12:45 +0200 | [diff] [blame] | 969 | int bmg160_core_probe(struct device *dev, struct regmap *regmap, int irq, |
| 970 | const char *name) |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 971 | { |
| 972 | struct bmg160_data *data; |
| 973 | struct iio_dev *indio_dev; |
| 974 | int ret; |
Markus Pargmann | c6c9e99 | 2015-08-12 16:50:04 +0200 | [diff] [blame] | 975 | |
Markus Pargmann | 1342645 | 2015-08-19 14:12:45 +0200 | [diff] [blame] | 976 | indio_dev = devm_iio_device_alloc(dev, sizeof(*data)); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 977 | if (!indio_dev) |
| 978 | return -ENOMEM; |
| 979 | |
| 980 | data = iio_priv(indio_dev); |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 981 | dev_set_drvdata(dev, indio_dev); |
Markus Pargmann | 1342645 | 2015-08-19 14:12:45 +0200 | [diff] [blame] | 982 | data->irq = irq; |
| 983 | data->regmap = regmap; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 984 | |
| 985 | ret = bmg160_chip_init(data); |
| 986 | if (ret < 0) |
| 987 | return ret; |
| 988 | |
| 989 | mutex_init(&data->mutex); |
| 990 | |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 991 | if (ACPI_HANDLE(dev)) |
| 992 | name = bmg160_match_acpi_device(dev); |
Irina Tirdea | 3a0888e | 2014-02-09 11:59:00 +0000 | [diff] [blame] | 993 | |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 994 | indio_dev->dev.parent = dev; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 995 | indio_dev->channels = bmg160_channels; |
| 996 | indio_dev->num_channels = ARRAY_SIZE(bmg160_channels); |
Irina Tirdea | 3a0888e | 2014-02-09 11:59:00 +0000 | [diff] [blame] | 997 | indio_dev->name = name; |
Irina Tirdea | ee8c541 | 2016-03-24 11:29:28 +0200 | [diff] [blame] | 998 | indio_dev->available_scan_masks = bmg160_accel_scan_masks; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 999 | indio_dev->modes = INDIO_DIRECT_MODE; |
| 1000 | indio_dev->info = &bmg160_info; |
| 1001 | |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 1002 | if (data->irq > 0) { |
| 1003 | ret = devm_request_threaded_irq(dev, |
| 1004 | data->irq, |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1005 | bmg160_data_rdy_trig_poll, |
| 1006 | bmg160_event_handler, |
| 1007 | IRQF_TRIGGER_RISING, |
| 1008 | BMG160_IRQ_NAME, |
| 1009 | indio_dev); |
| 1010 | if (ret) |
| 1011 | return ret; |
| 1012 | |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 1013 | data->dready_trig = devm_iio_trigger_alloc(dev, |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1014 | "%s-dev%d", |
| 1015 | indio_dev->name, |
| 1016 | indio_dev->id); |
| 1017 | if (!data->dready_trig) |
| 1018 | return -ENOMEM; |
| 1019 | |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 1020 | data->motion_trig = devm_iio_trigger_alloc(dev, |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1021 | "%s-any-motion-dev%d", |
| 1022 | indio_dev->name, |
| 1023 | indio_dev->id); |
| 1024 | if (!data->motion_trig) |
| 1025 | return -ENOMEM; |
| 1026 | |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 1027 | data->dready_trig->dev.parent = dev; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1028 | data->dready_trig->ops = &bmg160_trigger_ops; |
| 1029 | iio_trigger_set_drvdata(data->dready_trig, indio_dev); |
| 1030 | ret = iio_trigger_register(data->dready_trig); |
| 1031 | if (ret) |
| 1032 | return ret; |
| 1033 | |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 1034 | data->motion_trig->dev.parent = dev; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1035 | data->motion_trig->ops = &bmg160_trigger_ops; |
| 1036 | iio_trigger_set_drvdata(data->motion_trig, indio_dev); |
| 1037 | ret = iio_trigger_register(data->motion_trig); |
| 1038 | if (ret) { |
| 1039 | data->motion_trig = NULL; |
| 1040 | goto err_trigger_unregister; |
| 1041 | } |
Vlad Dogaru | 00e0c8e | 2015-05-13 16:30:09 +0300 | [diff] [blame] | 1042 | } |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1043 | |
Vlad Dogaru | 00e0c8e | 2015-05-13 16:30:09 +0300 | [diff] [blame] | 1044 | ret = iio_triggered_buffer_setup(indio_dev, |
| 1045 | iio_pollfunc_store_time, |
| 1046 | bmg160_trigger_handler, |
| 1047 | &bmg160_buffer_setup_ops); |
| 1048 | if (ret < 0) { |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 1049 | dev_err(dev, |
Vlad Dogaru | 00e0c8e | 2015-05-13 16:30:09 +0300 | [diff] [blame] | 1050 | "iio triggered buffer setup failed\n"); |
| 1051 | goto err_trigger_unregister; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1052 | } |
| 1053 | |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 1054 | ret = pm_runtime_set_active(dev); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1055 | if (ret) |
Adriana Reus | 7d0ead5 | 2015-11-05 16:25:29 +0200 | [diff] [blame] | 1056 | goto err_buffer_cleanup; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1057 | |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 1058 | pm_runtime_enable(dev); |
| 1059 | pm_runtime_set_autosuspend_delay(dev, |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1060 | BMG160_AUTO_SUSPEND_DELAY_MS); |
Markus Pargmann | 5d889ab | 2015-08-12 16:50:07 +0200 | [diff] [blame] | 1061 | pm_runtime_use_autosuspend(dev); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1062 | |
Adriana Reus | 7d0ead5 | 2015-11-05 16:25:29 +0200 | [diff] [blame] | 1063 | ret = iio_device_register(indio_dev); |
| 1064 | if (ret < 0) { |
| 1065 | dev_err(dev, "unable to register iio device\n"); |
| 1066 | goto err_buffer_cleanup; |
| 1067 | } |
| 1068 | |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1069 | return 0; |
| 1070 | |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1071 | err_buffer_cleanup: |
Vlad Dogaru | 00e0c8e | 2015-05-13 16:30:09 +0300 | [diff] [blame] | 1072 | iio_triggered_buffer_cleanup(indio_dev); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1073 | err_trigger_unregister: |
| 1074 | if (data->dready_trig) |
| 1075 | iio_trigger_unregister(data->dready_trig); |
| 1076 | if (data->motion_trig) |
| 1077 | iio_trigger_unregister(data->motion_trig); |
| 1078 | |
| 1079 | return ret; |
| 1080 | } |
Markus Pargmann | 1342645 | 2015-08-19 14:12:45 +0200 | [diff] [blame] | 1081 | EXPORT_SYMBOL_GPL(bmg160_core_probe); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1082 | |
Markus Pargmann | 1342645 | 2015-08-19 14:12:45 +0200 | [diff] [blame] | 1083 | void bmg160_core_remove(struct device *dev) |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1084 | { |
Markus Pargmann | 1342645 | 2015-08-19 14:12:45 +0200 | [diff] [blame] | 1085 | struct iio_dev *indio_dev = dev_get_drvdata(dev); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1086 | struct bmg160_data *data = iio_priv(indio_dev); |
| 1087 | |
Adriana Reus | 7d0ead5 | 2015-11-05 16:25:29 +0200 | [diff] [blame] | 1088 | iio_device_unregister(indio_dev); |
| 1089 | |
Markus Pargmann | 1342645 | 2015-08-19 14:12:45 +0200 | [diff] [blame] | 1090 | pm_runtime_disable(dev); |
| 1091 | pm_runtime_set_suspended(dev); |
| 1092 | pm_runtime_put_noidle(dev); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1093 | |
Vlad Dogaru | 00e0c8e | 2015-05-13 16:30:09 +0300 | [diff] [blame] | 1094 | iio_triggered_buffer_cleanup(indio_dev); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1095 | |
| 1096 | if (data->dready_trig) { |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1097 | iio_trigger_unregister(data->dready_trig); |
| 1098 | iio_trigger_unregister(data->motion_trig); |
| 1099 | } |
| 1100 | |
| 1101 | mutex_lock(&data->mutex); |
| 1102 | bmg160_set_mode(data, BMG160_MODE_DEEP_SUSPEND); |
| 1103 | mutex_unlock(&data->mutex); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1104 | } |
Markus Pargmann | 1342645 | 2015-08-19 14:12:45 +0200 | [diff] [blame] | 1105 | EXPORT_SYMBOL_GPL(bmg160_core_remove); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1106 | |
| 1107 | #ifdef CONFIG_PM_SLEEP |
| 1108 | static int bmg160_suspend(struct device *dev) |
| 1109 | { |
Markus Pargmann | ebc6eb5 | 2015-08-12 16:50:06 +0200 | [diff] [blame] | 1110 | struct iio_dev *indio_dev = dev_get_drvdata(dev); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1111 | struct bmg160_data *data = iio_priv(indio_dev); |
| 1112 | |
| 1113 | mutex_lock(&data->mutex); |
| 1114 | bmg160_set_mode(data, BMG160_MODE_SUSPEND); |
| 1115 | mutex_unlock(&data->mutex); |
| 1116 | |
| 1117 | return 0; |
| 1118 | } |
| 1119 | |
| 1120 | static int bmg160_resume(struct device *dev) |
| 1121 | { |
Markus Pargmann | ebc6eb5 | 2015-08-12 16:50:06 +0200 | [diff] [blame] | 1122 | struct iio_dev *indio_dev = dev_get_drvdata(dev); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1123 | struct bmg160_data *data = iio_priv(indio_dev); |
| 1124 | |
| 1125 | mutex_lock(&data->mutex); |
| 1126 | if (data->dready_trigger_on || data->motion_trigger_on || |
| 1127 | data->ev_enable_state) |
| 1128 | bmg160_set_mode(data, BMG160_MODE_NORMAL); |
| 1129 | mutex_unlock(&data->mutex); |
| 1130 | |
| 1131 | return 0; |
| 1132 | } |
| 1133 | #endif |
| 1134 | |
Rafael J. Wysocki | 6f0a13f | 2014-12-04 01:08:13 +0100 | [diff] [blame] | 1135 | #ifdef CONFIG_PM |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1136 | static int bmg160_runtime_suspend(struct device *dev) |
| 1137 | { |
Markus Pargmann | ebc6eb5 | 2015-08-12 16:50:06 +0200 | [diff] [blame] | 1138 | struct iio_dev *indio_dev = dev_get_drvdata(dev); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1139 | struct bmg160_data *data = iio_priv(indio_dev); |
Srinivas Pandruvada | 10bef28 | 2014-10-10 20:33:25 -0700 | [diff] [blame] | 1140 | int ret; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1141 | |
Srinivas Pandruvada | 10bef28 | 2014-10-10 20:33:25 -0700 | [diff] [blame] | 1142 | ret = bmg160_set_mode(data, BMG160_MODE_SUSPEND); |
| 1143 | if (ret < 0) { |
Alison Schofield | dc2c571 | 2016-04-10 12:08:14 -0700 | [diff] [blame] | 1144 | dev_err(dev, "set mode failed\n"); |
Srinivas Pandruvada | 10bef28 | 2014-10-10 20:33:25 -0700 | [diff] [blame] | 1145 | return -EAGAIN; |
| 1146 | } |
| 1147 | |
| 1148 | return 0; |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1149 | } |
| 1150 | |
| 1151 | static int bmg160_runtime_resume(struct device *dev) |
| 1152 | { |
Markus Pargmann | ebc6eb5 | 2015-08-12 16:50:06 +0200 | [diff] [blame] | 1153 | struct iio_dev *indio_dev = dev_get_drvdata(dev); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1154 | struct bmg160_data *data = iio_priv(indio_dev); |
| 1155 | int ret; |
| 1156 | |
| 1157 | ret = bmg160_set_mode(data, BMG160_MODE_NORMAL); |
| 1158 | if (ret < 0) |
| 1159 | return ret; |
| 1160 | |
| 1161 | msleep_interruptible(BMG160_MAX_STARTUP_TIME_MS); |
| 1162 | |
| 1163 | return 0; |
| 1164 | } |
| 1165 | #endif |
| 1166 | |
Markus Pargmann | 1342645 | 2015-08-19 14:12:45 +0200 | [diff] [blame] | 1167 | const struct dev_pm_ops bmg160_pm_ops = { |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1168 | SET_SYSTEM_SLEEP_PM_OPS(bmg160_suspend, bmg160_resume) |
| 1169 | SET_RUNTIME_PM_OPS(bmg160_runtime_suspend, |
| 1170 | bmg160_runtime_resume, NULL) |
| 1171 | }; |
Markus Pargmann | 1342645 | 2015-08-19 14:12:45 +0200 | [diff] [blame] | 1172 | EXPORT_SYMBOL_GPL(bmg160_pm_ops); |
Srinivas Pandruvada | 22b46c4 | 2014-05-08 22:57:00 +0100 | [diff] [blame] | 1173 | |
| 1174 | MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>"); |
| 1175 | MODULE_LICENSE("GPL v2"); |
| 1176 | MODULE_DESCRIPTION("BMG160 Gyro driver"); |