Joseph Lai | 631b16e | 2011-06-27 13:26:53 -0700 | [diff] [blame] | 1 | /* |
| 2 | * MPU3050 Tri-axis gyroscope driver |
| 3 | * |
| 4 | * Copyright (C) 2011 Wistron Co.Ltd |
| 5 | * Joseph Lai <joseph_lai@wistron.com> |
| 6 | * |
| 7 | * Trimmed down by Alan Cox <alan@linux.intel.com> to produce this version |
| 8 | * |
| 9 | * This is a 'lite' version of the driver, while we consider the right way |
| 10 | * to present the other features to user space. In particular it requires the |
| 11 | * device has an IRQ, and it only provides an input interface, so is not much |
| 12 | * use for device orientation. A fuller version is available from the Meego |
| 13 | * tree. |
| 14 | * |
| 15 | * This program is based on bma023.c. |
| 16 | * |
| 17 | * This program is free software; you can redistribute it and/or modify |
| 18 | * it under the terms of the GNU General Public License as published by |
| 19 | * the Free Software Foundation; version 2 of the License. |
| 20 | * |
| 21 | * This program is distributed in the hope that it will be useful, but |
| 22 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 23 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 24 | * General Public License for more details. |
| 25 | * |
| 26 | * You should have received a copy of the GNU General Public License along |
| 27 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 28 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
| 29 | * |
| 30 | */ |
| 31 | |
| 32 | #include <linux/module.h> |
| 33 | #include <linux/init.h> |
| 34 | #include <linux/interrupt.h> |
| 35 | #include <linux/platform_device.h> |
| 36 | #include <linux/mutex.h> |
| 37 | #include <linux/err.h> |
| 38 | #include <linux/i2c.h> |
| 39 | #include <linux/input.h> |
| 40 | #include <linux/delay.h> |
| 41 | #include <linux/slab.h> |
| 42 | #include <linux/pm_runtime.h> |
| 43 | |
Joseph Lai | 631b16e | 2011-06-27 13:26:53 -0700 | [diff] [blame] | 44 | #define MPU3050_CHIP_ID 0x69 |
Joseph Lai | 631b16e | 2011-06-27 13:26:53 -0700 | [diff] [blame] | 45 | |
| 46 | #define MPU3050_AUTO_DELAY 1000 |
| 47 | |
| 48 | #define MPU3050_MIN_VALUE -32768 |
| 49 | #define MPU3050_MAX_VALUE 32767 |
| 50 | |
Heikki Krogerus | cd314fa | 2011-12-24 00:09:04 -0800 | [diff] [blame] | 51 | #define MPU3050_DEFAULT_POLL_INTERVAL 200 |
| 52 | #define MPU3050_DEFAULT_FS_RANGE 3 |
| 53 | |
| 54 | /* Register map */ |
| 55 | #define MPU3050_CHIP_ID_REG 0x00 |
| 56 | #define MPU3050_SMPLRT_DIV 0x15 |
| 57 | #define MPU3050_DLPF_FS_SYNC 0x16 |
| 58 | #define MPU3050_INT_CFG 0x17 |
| 59 | #define MPU3050_XOUT_H 0x1D |
| 60 | #define MPU3050_PWR_MGM 0x3E |
| 61 | #define MPU3050_PWR_MGM_POS 6 |
| 62 | |
| 63 | /* Register bits */ |
| 64 | |
| 65 | /* DLPF_FS_SYNC */ |
| 66 | #define MPU3050_EXT_SYNC_NONE 0x00 |
| 67 | #define MPU3050_EXT_SYNC_TEMP 0x20 |
| 68 | #define MPU3050_EXT_SYNC_GYROX 0x40 |
| 69 | #define MPU3050_EXT_SYNC_GYROY 0x60 |
| 70 | #define MPU3050_EXT_SYNC_GYROZ 0x80 |
| 71 | #define MPU3050_EXT_SYNC_ACCELX 0xA0 |
| 72 | #define MPU3050_EXT_SYNC_ACCELY 0xC0 |
| 73 | #define MPU3050_EXT_SYNC_ACCELZ 0xE0 |
| 74 | #define MPU3050_EXT_SYNC_MASK 0xE0 |
| 75 | #define MPU3050_FS_250DPS 0x00 |
| 76 | #define MPU3050_FS_500DPS 0x08 |
| 77 | #define MPU3050_FS_1000DPS 0x10 |
| 78 | #define MPU3050_FS_2000DPS 0x18 |
| 79 | #define MPU3050_FS_MASK 0x18 |
| 80 | #define MPU3050_DLPF_CFG_256HZ_NOLPF2 0x00 |
| 81 | #define MPU3050_DLPF_CFG_188HZ 0x01 |
| 82 | #define MPU3050_DLPF_CFG_98HZ 0x02 |
| 83 | #define MPU3050_DLPF_CFG_42HZ 0x03 |
| 84 | #define MPU3050_DLPF_CFG_20HZ 0x04 |
| 85 | #define MPU3050_DLPF_CFG_10HZ 0x05 |
| 86 | #define MPU3050_DLPF_CFG_5HZ 0x06 |
| 87 | #define MPU3050_DLPF_CFG_2100HZ_NOLPF 0x07 |
| 88 | #define MPU3050_DLPF_CFG_MASK 0x07 |
| 89 | /* INT_CFG */ |
| 90 | #define MPU3050_RAW_RDY_EN 0x01 |
| 91 | #define MPU3050_MPU_RDY_EN 0x02 |
| 92 | #define MPU3050_LATCH_INT_EN 0x04 |
| 93 | /* PWR_MGM */ |
| 94 | #define MPU3050_PWR_MGM_PLL_X 0x01 |
| 95 | #define MPU3050_PWR_MGM_PLL_Y 0x02 |
| 96 | #define MPU3050_PWR_MGM_PLL_Z 0x03 |
| 97 | #define MPU3050_PWR_MGM_CLKSEL 0x07 |
| 98 | #define MPU3050_PWR_MGM_STBY_ZG 0x08 |
| 99 | #define MPU3050_PWR_MGM_STBY_YG 0x10 |
| 100 | #define MPU3050_PWR_MGM_STBY_XG 0x20 |
| 101 | #define MPU3050_PWR_MGM_SLEEP 0x40 |
| 102 | #define MPU3050_PWR_MGM_RESET 0x80 |
| 103 | #define MPU3050_PWR_MGM_MASK 0x40 |
| 104 | |
Joseph Lai | 631b16e | 2011-06-27 13:26:53 -0700 | [diff] [blame] | 105 | struct axis_data { |
| 106 | s16 x; |
| 107 | s16 y; |
| 108 | s16 z; |
| 109 | }; |
| 110 | |
| 111 | struct mpu3050_sensor { |
| 112 | struct i2c_client *client; |
| 113 | struct device *dev; |
| 114 | struct input_dev *idev; |
| 115 | }; |
| 116 | |
| 117 | /** |
| 118 | * mpu3050_xyz_read_reg - read the axes values |
| 119 | * @buffer: provide register addr and get register |
| 120 | * @length: length of register |
| 121 | * |
| 122 | * Reads the register values in one transaction or returns a negative |
| 123 | * error code on failure. |
| 124 | */ |
| 125 | static int mpu3050_xyz_read_reg(struct i2c_client *client, |
| 126 | u8 *buffer, int length) |
| 127 | { |
| 128 | /* |
| 129 | * Annoying we can't make this const because the i2c layer doesn't |
| 130 | * declare input buffers const. |
| 131 | */ |
| 132 | char cmd = MPU3050_XOUT_H; |
| 133 | struct i2c_msg msg[] = { |
| 134 | { |
| 135 | .addr = client->addr, |
| 136 | .flags = 0, |
| 137 | .len = 1, |
| 138 | .buf = &cmd, |
| 139 | }, |
| 140 | { |
| 141 | .addr = client->addr, |
| 142 | .flags = I2C_M_RD, |
| 143 | .len = length, |
| 144 | .buf = buffer, |
| 145 | }, |
| 146 | }; |
| 147 | |
| 148 | return i2c_transfer(client->adapter, msg, 2); |
| 149 | } |
| 150 | |
| 151 | /** |
| 152 | * mpu3050_read_xyz - get co-ordinates from device |
| 153 | * @client: i2c address of sensor |
| 154 | * @coords: co-ordinates to update |
| 155 | * |
| 156 | * Return the converted X Y and Z co-ordinates from the sensor device |
| 157 | */ |
| 158 | static void mpu3050_read_xyz(struct i2c_client *client, |
| 159 | struct axis_data *coords) |
| 160 | { |
| 161 | u16 buffer[3]; |
| 162 | |
| 163 | mpu3050_xyz_read_reg(client, (u8 *)buffer, 6); |
| 164 | coords->x = be16_to_cpu(buffer[0]); |
| 165 | coords->y = be16_to_cpu(buffer[1]); |
| 166 | coords->z = be16_to_cpu(buffer[2]); |
| 167 | dev_dbg(&client->dev, "%s: x %d, y %d, z %d\n", __func__, |
| 168 | coords->x, coords->y, coords->z); |
| 169 | } |
| 170 | |
| 171 | /** |
| 172 | * mpu3050_set_power_mode - set the power mode |
| 173 | * @client: i2c client for the sensor |
| 174 | * @val: value to switch on/off of power, 1: normal power, 0: low power |
| 175 | * |
| 176 | * Put device to normal-power mode or low-power mode. |
| 177 | */ |
| 178 | static void mpu3050_set_power_mode(struct i2c_client *client, u8 val) |
| 179 | { |
| 180 | u8 value; |
| 181 | |
| 182 | value = i2c_smbus_read_byte_data(client, MPU3050_PWR_MGM); |
| 183 | value = (value & ~MPU3050_PWR_MGM_MASK) | |
| 184 | (((val << MPU3050_PWR_MGM_POS) & MPU3050_PWR_MGM_MASK) ^ |
| 185 | MPU3050_PWR_MGM_MASK); |
| 186 | i2c_smbus_write_byte_data(client, MPU3050_PWR_MGM, value); |
| 187 | } |
| 188 | |
| 189 | /** |
| 190 | * mpu3050_input_open - called on input event open |
| 191 | * @input: input dev of opened device |
| 192 | * |
| 193 | * The input layer calls this function when input event is opened. The |
| 194 | * function will push the device to resume. Then, the device is ready |
| 195 | * to provide data. |
| 196 | */ |
| 197 | static int mpu3050_input_open(struct input_dev *input) |
| 198 | { |
| 199 | struct mpu3050_sensor *sensor = input_get_drvdata(input); |
Heikki Krogerus | 3b51872 | 2011-12-23 23:57:09 -0800 | [diff] [blame] | 200 | int error; |
Joseph Lai | 631b16e | 2011-06-27 13:26:53 -0700 | [diff] [blame] | 201 | |
| 202 | pm_runtime_get(sensor->dev); |
| 203 | |
Heikki Krogerus | 3b51872 | 2011-12-23 23:57:09 -0800 | [diff] [blame] | 204 | /* Enable interrupts */ |
| 205 | error = i2c_smbus_write_byte_data(sensor->client, MPU3050_INT_CFG, |
| 206 | MPU3050_LATCH_INT_EN | |
| 207 | MPU3050_RAW_RDY_EN | |
| 208 | MPU3050_MPU_RDY_EN); |
| 209 | if (error < 0) { |
| 210 | pm_runtime_put(sensor->dev); |
| 211 | return error; |
| 212 | } |
| 213 | |
Joseph Lai | 631b16e | 2011-06-27 13:26:53 -0700 | [diff] [blame] | 214 | return 0; |
| 215 | } |
| 216 | |
| 217 | /** |
| 218 | * mpu3050_input_close - called on input event close |
| 219 | * @input: input dev of closed device |
| 220 | * |
| 221 | * The input layer calls this function when input event is closed. The |
| 222 | * function will push the device to suspend. |
| 223 | */ |
| 224 | static void mpu3050_input_close(struct input_dev *input) |
| 225 | { |
| 226 | struct mpu3050_sensor *sensor = input_get_drvdata(input); |
| 227 | |
| 228 | pm_runtime_put(sensor->dev); |
| 229 | } |
| 230 | |
| 231 | /** |
| 232 | * mpu3050_interrupt_thread - handle an IRQ |
| 233 | * @irq: interrupt numner |
| 234 | * @data: the sensor |
| 235 | * |
| 236 | * Called by the kernel single threaded after an interrupt occurs. Read |
| 237 | * the sensor data and generate an input event for it. |
| 238 | */ |
| 239 | static irqreturn_t mpu3050_interrupt_thread(int irq, void *data) |
| 240 | { |
| 241 | struct mpu3050_sensor *sensor = data; |
| 242 | struct axis_data axis; |
| 243 | |
| 244 | mpu3050_read_xyz(sensor->client, &axis); |
| 245 | |
| 246 | input_report_abs(sensor->idev, ABS_X, axis.x); |
| 247 | input_report_abs(sensor->idev, ABS_Y, axis.y); |
| 248 | input_report_abs(sensor->idev, ABS_Z, axis.z); |
| 249 | input_sync(sensor->idev); |
| 250 | |
| 251 | return IRQ_HANDLED; |
| 252 | } |
| 253 | |
| 254 | /** |
Heikki Krogerus | cd314fa | 2011-12-24 00:09:04 -0800 | [diff] [blame] | 255 | * mpu3050_hw_init - initialize hardware |
| 256 | * @sensor: the sensor |
| 257 | * |
| 258 | * Called during device probe; configures the sampling method. |
| 259 | */ |
Bill Pemberton | 5298cc4 | 2012-11-23 21:38:25 -0800 | [diff] [blame] | 260 | static int mpu3050_hw_init(struct mpu3050_sensor *sensor) |
Heikki Krogerus | cd314fa | 2011-12-24 00:09:04 -0800 | [diff] [blame] | 261 | { |
| 262 | struct i2c_client *client = sensor->client; |
| 263 | int ret; |
| 264 | u8 reg; |
| 265 | |
| 266 | /* Reset */ |
| 267 | ret = i2c_smbus_write_byte_data(client, MPU3050_PWR_MGM, |
| 268 | MPU3050_PWR_MGM_RESET); |
| 269 | if (ret < 0) |
| 270 | return ret; |
| 271 | |
| 272 | ret = i2c_smbus_read_byte_data(client, MPU3050_PWR_MGM); |
| 273 | if (ret < 0) |
| 274 | return ret; |
| 275 | |
| 276 | ret &= ~MPU3050_PWR_MGM_CLKSEL; |
| 277 | ret |= MPU3050_PWR_MGM_PLL_Z; |
| 278 | ret = i2c_smbus_write_byte_data(client, MPU3050_PWR_MGM, ret); |
| 279 | if (ret < 0) |
| 280 | return ret; |
| 281 | |
| 282 | /* Output frequency divider. The poll interval */ |
| 283 | ret = i2c_smbus_write_byte_data(client, MPU3050_SMPLRT_DIV, |
| 284 | MPU3050_DEFAULT_POLL_INTERVAL - 1); |
| 285 | if (ret < 0) |
| 286 | return ret; |
| 287 | |
| 288 | /* Set low pass filter and full scale */ |
| 289 | reg = MPU3050_DEFAULT_FS_RANGE; |
| 290 | reg |= MPU3050_DLPF_CFG_42HZ << 3; |
| 291 | reg |= MPU3050_EXT_SYNC_NONE << 5; |
| 292 | ret = i2c_smbus_write_byte_data(client, MPU3050_DLPF_FS_SYNC, reg); |
| 293 | if (ret < 0) |
| 294 | return ret; |
| 295 | |
| 296 | return 0; |
| 297 | } |
| 298 | |
| 299 | /** |
Joseph Lai | 631b16e | 2011-06-27 13:26:53 -0700 | [diff] [blame] | 300 | * mpu3050_probe - device detection callback |
| 301 | * @client: i2c client of found device |
| 302 | * @id: id match information |
| 303 | * |
| 304 | * The I2C layer calls us when it believes a sensor is present at this |
| 305 | * address. Probe to see if this is correct and to validate the device. |
| 306 | * |
| 307 | * If present install the relevant sysfs interfaces and input device. |
| 308 | */ |
Bill Pemberton | 5298cc4 | 2012-11-23 21:38:25 -0800 | [diff] [blame] | 309 | static int mpu3050_probe(struct i2c_client *client, |
Joseph Lai | 631b16e | 2011-06-27 13:26:53 -0700 | [diff] [blame] | 310 | const struct i2c_device_id *id) |
| 311 | { |
| 312 | struct mpu3050_sensor *sensor; |
| 313 | struct input_dev *idev; |
| 314 | int ret; |
| 315 | int error; |
| 316 | |
| 317 | sensor = kzalloc(sizeof(struct mpu3050_sensor), GFP_KERNEL); |
| 318 | idev = input_allocate_device(); |
| 319 | if (!sensor || !idev) { |
| 320 | dev_err(&client->dev, "failed to allocate driver data\n"); |
| 321 | error = -ENOMEM; |
| 322 | goto err_free_mem; |
| 323 | } |
| 324 | |
| 325 | sensor->client = client; |
| 326 | sensor->dev = &client->dev; |
| 327 | sensor->idev = idev; |
| 328 | |
| 329 | mpu3050_set_power_mode(client, 1); |
| 330 | msleep(10); |
| 331 | |
| 332 | ret = i2c_smbus_read_byte_data(client, MPU3050_CHIP_ID_REG); |
| 333 | if (ret < 0) { |
| 334 | dev_err(&client->dev, "failed to detect device\n"); |
| 335 | error = -ENXIO; |
| 336 | goto err_free_mem; |
| 337 | } |
| 338 | |
| 339 | if (ret != MPU3050_CHIP_ID) { |
| 340 | dev_err(&client->dev, "unsupported chip id\n"); |
| 341 | error = -ENXIO; |
| 342 | goto err_free_mem; |
| 343 | } |
| 344 | |
| 345 | idev->name = "MPU3050"; |
| 346 | idev->id.bustype = BUS_I2C; |
| 347 | idev->dev.parent = &client->dev; |
| 348 | |
| 349 | idev->open = mpu3050_input_open; |
| 350 | idev->close = mpu3050_input_close; |
| 351 | |
| 352 | __set_bit(EV_ABS, idev->evbit); |
| 353 | input_set_abs_params(idev, ABS_X, |
| 354 | MPU3050_MIN_VALUE, MPU3050_MAX_VALUE, 0, 0); |
| 355 | input_set_abs_params(idev, ABS_Y, |
| 356 | MPU3050_MIN_VALUE, MPU3050_MAX_VALUE, 0, 0); |
| 357 | input_set_abs_params(idev, ABS_Z, |
| 358 | MPU3050_MIN_VALUE, MPU3050_MAX_VALUE, 0, 0); |
| 359 | |
| 360 | input_set_drvdata(idev, sensor); |
| 361 | |
| 362 | pm_runtime_set_active(&client->dev); |
| 363 | |
Heikki Krogerus | cd314fa | 2011-12-24 00:09:04 -0800 | [diff] [blame] | 364 | error = mpu3050_hw_init(sensor); |
| 365 | if (error) |
| 366 | goto err_pm_set_suspended; |
| 367 | |
Joseph Lai | 631b16e | 2011-06-27 13:26:53 -0700 | [diff] [blame] | 368 | error = request_threaded_irq(client->irq, |
| 369 | NULL, mpu3050_interrupt_thread, |
Stephen Warren | f31ad40 | 2012-05-02 00:15:18 -0700 | [diff] [blame] | 370 | IRQF_TRIGGER_RISING | IRQF_ONESHOT, |
Heikki Krogerus | 3b51872 | 2011-12-23 23:57:09 -0800 | [diff] [blame] | 371 | "mpu3050", sensor); |
Joseph Lai | 631b16e | 2011-06-27 13:26:53 -0700 | [diff] [blame] | 372 | if (error) { |
| 373 | dev_err(&client->dev, |
| 374 | "can't get IRQ %d, error %d\n", client->irq, error); |
| 375 | goto err_pm_set_suspended; |
| 376 | } |
| 377 | |
| 378 | error = input_register_device(idev); |
| 379 | if (error) { |
| 380 | dev_err(&client->dev, "failed to register input device\n"); |
| 381 | goto err_free_irq; |
| 382 | } |
| 383 | |
| 384 | pm_runtime_enable(&client->dev); |
| 385 | pm_runtime_set_autosuspend_delay(&client->dev, MPU3050_AUTO_DELAY); |
Wei Yongjun | 158baef | 2013-11-10 23:34:05 -0800 | [diff] [blame^] | 386 | i2c_set_clientdata(client, sensor); |
Joseph Lai | 631b16e | 2011-06-27 13:26:53 -0700 | [diff] [blame] | 387 | |
| 388 | return 0; |
| 389 | |
| 390 | err_free_irq: |
| 391 | free_irq(client->irq, sensor); |
| 392 | err_pm_set_suspended: |
| 393 | pm_runtime_set_suspended(&client->dev); |
| 394 | err_free_mem: |
Axel Lin | d9b830f | 2011-08-11 09:19:29 -0700 | [diff] [blame] | 395 | input_free_device(idev); |
Joseph Lai | 631b16e | 2011-06-27 13:26:53 -0700 | [diff] [blame] | 396 | kfree(sensor); |
| 397 | return error; |
| 398 | } |
| 399 | |
| 400 | /** |
| 401 | * mpu3050_remove - remove a sensor |
| 402 | * @client: i2c client of sensor being removed |
| 403 | * |
| 404 | * Our sensor is going away, clean up the resources. |
| 405 | */ |
Bill Pemberton | e2619cf | 2012-11-23 21:50:47 -0800 | [diff] [blame] | 406 | static int mpu3050_remove(struct i2c_client *client) |
Joseph Lai | 631b16e | 2011-06-27 13:26:53 -0700 | [diff] [blame] | 407 | { |
| 408 | struct mpu3050_sensor *sensor = i2c_get_clientdata(client); |
| 409 | |
| 410 | pm_runtime_disable(&client->dev); |
| 411 | pm_runtime_set_suspended(&client->dev); |
| 412 | |
| 413 | free_irq(client->irq, sensor); |
| 414 | input_unregister_device(sensor->idev); |
| 415 | kfree(sensor); |
| 416 | |
| 417 | return 0; |
| 418 | } |
| 419 | |
| 420 | #ifdef CONFIG_PM |
| 421 | /** |
| 422 | * mpu3050_suspend - called on device suspend |
| 423 | * @dev: device being suspended |
| 424 | * |
| 425 | * Put the device into sleep mode before we suspend the machine. |
| 426 | */ |
| 427 | static int mpu3050_suspend(struct device *dev) |
| 428 | { |
| 429 | struct i2c_client *client = to_i2c_client(dev); |
| 430 | |
| 431 | mpu3050_set_power_mode(client, 0); |
| 432 | |
| 433 | return 0; |
| 434 | } |
| 435 | |
| 436 | /** |
| 437 | * mpu3050_resume - called on device resume |
| 438 | * @dev: device being resumed |
| 439 | * |
| 440 | * Put the device into powered mode on resume. |
| 441 | */ |
| 442 | static int mpu3050_resume(struct device *dev) |
| 443 | { |
| 444 | struct i2c_client *client = to_i2c_client(dev); |
| 445 | |
| 446 | mpu3050_set_power_mode(client, 1); |
| 447 | msleep(100); /* wait for gyro chip resume */ |
| 448 | |
| 449 | return 0; |
| 450 | } |
| 451 | #endif |
| 452 | |
| 453 | static UNIVERSAL_DEV_PM_OPS(mpu3050_pm, mpu3050_suspend, mpu3050_resume, NULL); |
| 454 | |
| 455 | static const struct i2c_device_id mpu3050_ids[] = { |
| 456 | { "mpu3050", 0 }, |
| 457 | { } |
| 458 | }; |
| 459 | MODULE_DEVICE_TABLE(i2c, mpu3050_ids); |
| 460 | |
Olof Johansson | e948981 | 2011-12-23 01:20:44 -0800 | [diff] [blame] | 461 | static const struct of_device_id mpu3050_of_match[] = { |
| 462 | { .compatible = "invn,mpu3050", }, |
| 463 | { }, |
| 464 | }; |
| 465 | MODULE_DEVICE_TABLE(of, mpu3050_of_match); |
| 466 | |
Joseph Lai | 631b16e | 2011-06-27 13:26:53 -0700 | [diff] [blame] | 467 | static struct i2c_driver mpu3050_i2c_driver = { |
| 468 | .driver = { |
| 469 | .name = "mpu3050", |
| 470 | .owner = THIS_MODULE, |
| 471 | .pm = &mpu3050_pm, |
Olof Johansson | e948981 | 2011-12-23 01:20:44 -0800 | [diff] [blame] | 472 | .of_match_table = mpu3050_of_match, |
Joseph Lai | 631b16e | 2011-06-27 13:26:53 -0700 | [diff] [blame] | 473 | }, |
| 474 | .probe = mpu3050_probe, |
Bill Pemberton | 1cb0aa8 | 2012-11-23 21:27:39 -0800 | [diff] [blame] | 475 | .remove = mpu3050_remove, |
Joseph Lai | 631b16e | 2011-06-27 13:26:53 -0700 | [diff] [blame] | 476 | .id_table = mpu3050_ids, |
| 477 | }; |
| 478 | |
Axel Lin | 1b92c1c | 2012-03-16 23:05:41 -0700 | [diff] [blame] | 479 | module_i2c_driver(mpu3050_i2c_driver); |
Joseph Lai | 631b16e | 2011-06-27 13:26:53 -0700 | [diff] [blame] | 480 | |
| 481 | MODULE_AUTHOR("Wistron Corp."); |
| 482 | MODULE_DESCRIPTION("MPU3050 Tri-axis gyroscope driver"); |
| 483 | MODULE_LICENSE("GPL"); |