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c17ca3f5 EA |
1 | /* |
2 | * Copyright (c) 2011 Bosch Sensortec GmbH | |
3 | * Copyright (c) 2011 Unixphere | |
4 | * | |
5 | * This driver adds support for Bosch Sensortec's digital acceleration | |
6 | * sensors BMA150 and SMB380. | |
7 | * The SMB380 is fully compatible with BMA150 and only differs in packaging. | |
8 | * | |
9 | * The datasheet for the BMA150 chip can be found here: | |
10 | * http://www.bosch-sensortec.com/content/language1/downloads/BST-BMA150-DS000-07.pdf | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
24 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
25 | */ | |
26 | #include <linux/kernel.h> | |
27 | #include <linux/module.h> | |
28 | #include <linux/i2c.h> | |
29 | #include <linux/input.h> | |
30 | #include <linux/input-polldev.h> | |
31 | #include <linux/interrupt.h> | |
32 | #include <linux/delay.h> | |
33 | #include <linux/slab.h> | |
34 | #include <linux/pm.h> | |
35 | #include <linux/pm_runtime.h> | |
36 | #include <linux/bma150.h> | |
37 | ||
38 | #define ABSMAX_ACC_VAL 0x01FF | |
39 | #define ABSMIN_ACC_VAL -(ABSMAX_ACC_VAL) | |
40 | ||
41 | /* Each axis is represented by a 2-byte data word */ | |
42 | #define BMA150_XYZ_DATA_SIZE 6 | |
43 | ||
44 | /* Input poll interval in milliseconds */ | |
45 | #define BMA150_POLL_INTERVAL 10 | |
46 | #define BMA150_POLL_MAX 200 | |
47 | #define BMA150_POLL_MIN 0 | |
48 | ||
c17ca3f5 EA |
49 | #define BMA150_MODE_NORMAL 0 |
50 | #define BMA150_MODE_SLEEP 2 | |
51 | #define BMA150_MODE_WAKE_UP 3 | |
52 | ||
53 | /* Data register addresses */ | |
54 | #define BMA150_DATA_0_REG 0x00 | |
55 | #define BMA150_DATA_1_REG 0x01 | |
56 | #define BMA150_DATA_2_REG 0x02 | |
57 | ||
58 | /* Control register addresses */ | |
59 | #define BMA150_CTRL_0_REG 0x0A | |
60 | #define BMA150_CTRL_1_REG 0x0B | |
61 | #define BMA150_CTRL_2_REG 0x14 | |
62 | #define BMA150_CTRL_3_REG 0x15 | |
63 | ||
64 | /* Configuration/Setting register addresses */ | |
65 | #define BMA150_CFG_0_REG 0x0C | |
66 | #define BMA150_CFG_1_REG 0x0D | |
67 | #define BMA150_CFG_2_REG 0x0E | |
68 | #define BMA150_CFG_3_REG 0x0F | |
69 | #define BMA150_CFG_4_REG 0x10 | |
70 | #define BMA150_CFG_5_REG 0x11 | |
71 | ||
72 | #define BMA150_CHIP_ID 2 | |
ef3714fd | 73 | #define BMA180_CHIP_ID 3 |
c17ca3f5 EA |
74 | #define BMA150_CHIP_ID_REG BMA150_DATA_0_REG |
75 | ||
76 | #define BMA150_ACC_X_LSB_REG BMA150_DATA_2_REG | |
77 | ||
78 | #define BMA150_SLEEP_POS 0 | |
79 | #define BMA150_SLEEP_MSK 0x01 | |
80 | #define BMA150_SLEEP_REG BMA150_CTRL_0_REG | |
81 | ||
82 | #define BMA150_BANDWIDTH_POS 0 | |
83 | #define BMA150_BANDWIDTH_MSK 0x07 | |
84 | #define BMA150_BANDWIDTH_REG BMA150_CTRL_2_REG | |
85 | ||
86 | #define BMA150_RANGE_POS 3 | |
87 | #define BMA150_RANGE_MSK 0x18 | |
88 | #define BMA150_RANGE_REG BMA150_CTRL_2_REG | |
89 | ||
90 | #define BMA150_WAKE_UP_POS 0 | |
91 | #define BMA150_WAKE_UP_MSK 0x01 | |
92 | #define BMA150_WAKE_UP_REG BMA150_CTRL_3_REG | |
93 | ||
94 | #define BMA150_SW_RES_POS 1 | |
95 | #define BMA150_SW_RES_MSK 0x02 | |
96 | #define BMA150_SW_RES_REG BMA150_CTRL_0_REG | |
97 | ||
98 | /* Any-motion interrupt register fields */ | |
99 | #define BMA150_ANY_MOTION_EN_POS 6 | |
100 | #define BMA150_ANY_MOTION_EN_MSK 0x40 | |
101 | #define BMA150_ANY_MOTION_EN_REG BMA150_CTRL_1_REG | |
102 | ||
103 | #define BMA150_ANY_MOTION_DUR_POS 6 | |
104 | #define BMA150_ANY_MOTION_DUR_MSK 0xC0 | |
105 | #define BMA150_ANY_MOTION_DUR_REG BMA150_CFG_5_REG | |
106 | ||
107 | #define BMA150_ANY_MOTION_THRES_REG BMA150_CFG_4_REG | |
108 | ||
109 | /* Advanced interrupt register fields */ | |
110 | #define BMA150_ADV_INT_EN_POS 6 | |
111 | #define BMA150_ADV_INT_EN_MSK 0x40 | |
112 | #define BMA150_ADV_INT_EN_REG BMA150_CTRL_3_REG | |
113 | ||
114 | /* High-G interrupt register fields */ | |
115 | #define BMA150_HIGH_G_EN_POS 1 | |
116 | #define BMA150_HIGH_G_EN_MSK 0x02 | |
117 | #define BMA150_HIGH_G_EN_REG BMA150_CTRL_1_REG | |
118 | ||
119 | #define BMA150_HIGH_G_HYST_POS 3 | |
120 | #define BMA150_HIGH_G_HYST_MSK 0x38 | |
121 | #define BMA150_HIGH_G_HYST_REG BMA150_CFG_5_REG | |
122 | ||
123 | #define BMA150_HIGH_G_DUR_REG BMA150_CFG_3_REG | |
124 | #define BMA150_HIGH_G_THRES_REG BMA150_CFG_2_REG | |
125 | ||
126 | /* Low-G interrupt register fields */ | |
127 | #define BMA150_LOW_G_EN_POS 0 | |
128 | #define BMA150_LOW_G_EN_MSK 0x01 | |
129 | #define BMA150_LOW_G_EN_REG BMA150_CTRL_1_REG | |
130 | ||
131 | #define BMA150_LOW_G_HYST_POS 0 | |
132 | #define BMA150_LOW_G_HYST_MSK 0x07 | |
133 | #define BMA150_LOW_G_HYST_REG BMA150_CFG_5_REG | |
134 | ||
135 | #define BMA150_LOW_G_DUR_REG BMA150_CFG_1_REG | |
136 | #define BMA150_LOW_G_THRES_REG BMA150_CFG_0_REG | |
137 | ||
138 | struct bma150_data { | |
139 | struct i2c_client *client; | |
140 | struct input_polled_dev *input_polled; | |
141 | struct input_dev *input; | |
142 | u8 mode; | |
143 | }; | |
144 | ||
145 | /* | |
146 | * The settings for the given range, bandwidth and interrupt features | |
147 | * are stated and verified by Bosch Sensortec where they are configured | |
148 | * to provide a generic sensitivity performance. | |
149 | */ | |
d6f6dfd9 | 150 | static struct bma150_cfg default_cfg = { |
c17ca3f5 EA |
151 | .any_motion_int = 1, |
152 | .hg_int = 1, | |
153 | .lg_int = 1, | |
154 | .any_motion_dur = 0, | |
155 | .any_motion_thres = 0, | |
156 | .hg_hyst = 0, | |
157 | .hg_dur = 150, | |
158 | .hg_thres = 160, | |
159 | .lg_hyst = 0, | |
160 | .lg_dur = 150, | |
161 | .lg_thres = 20, | |
162 | .range = BMA150_RANGE_2G, | |
163 | .bandwidth = BMA150_BW_50HZ | |
164 | }; | |
165 | ||
166 | static int bma150_write_byte(struct i2c_client *client, u8 reg, u8 val) | |
167 | { | |
168 | s32 ret; | |
169 | ||
170 | /* As per specification, disable irq in between register writes */ | |
171 | if (client->irq) | |
172 | disable_irq_nosync(client->irq); | |
173 | ||
174 | ret = i2c_smbus_write_byte_data(client, reg, val); | |
175 | ||
176 | if (client->irq) | |
177 | enable_irq(client->irq); | |
178 | ||
179 | return ret; | |
180 | } | |
181 | ||
182 | static int bma150_set_reg_bits(struct i2c_client *client, | |
183 | int val, int shift, u8 mask, u8 reg) | |
184 | { | |
185 | int data; | |
186 | ||
187 | data = i2c_smbus_read_byte_data(client, reg); | |
188 | if (data < 0) | |
189 | return data; | |
190 | ||
191 | data = (data & ~mask) | ((val << shift) & mask); | |
192 | return bma150_write_byte(client, reg, data); | |
193 | } | |
194 | ||
195 | static int bma150_set_mode(struct bma150_data *bma150, u8 mode) | |
196 | { | |
197 | int error; | |
198 | ||
199 | error = bma150_set_reg_bits(bma150->client, mode, BMA150_WAKE_UP_POS, | |
200 | BMA150_WAKE_UP_MSK, BMA150_WAKE_UP_REG); | |
201 | if (error) | |
202 | return error; | |
203 | ||
204 | error = bma150_set_reg_bits(bma150->client, mode, BMA150_SLEEP_POS, | |
205 | BMA150_SLEEP_MSK, BMA150_SLEEP_REG); | |
206 | if (error) | |
207 | return error; | |
208 | ||
209 | if (mode == BMA150_MODE_NORMAL) | |
210 | msleep(2); | |
211 | ||
212 | bma150->mode = mode; | |
213 | return 0; | |
214 | } | |
215 | ||
5298cc4c | 216 | static int bma150_soft_reset(struct bma150_data *bma150) |
c17ca3f5 EA |
217 | { |
218 | int error; | |
219 | ||
220 | error = bma150_set_reg_bits(bma150->client, 1, BMA150_SW_RES_POS, | |
221 | BMA150_SW_RES_MSK, BMA150_SW_RES_REG); | |
222 | if (error) | |
223 | return error; | |
224 | ||
225 | msleep(2); | |
226 | return 0; | |
227 | } | |
228 | ||
5298cc4c | 229 | static int bma150_set_range(struct bma150_data *bma150, u8 range) |
c17ca3f5 EA |
230 | { |
231 | return bma150_set_reg_bits(bma150->client, range, BMA150_RANGE_POS, | |
232 | BMA150_RANGE_MSK, BMA150_RANGE_REG); | |
233 | } | |
234 | ||
5298cc4c | 235 | static int bma150_set_bandwidth(struct bma150_data *bma150, u8 bw) |
c17ca3f5 EA |
236 | { |
237 | return bma150_set_reg_bits(bma150->client, bw, BMA150_BANDWIDTH_POS, | |
238 | BMA150_BANDWIDTH_MSK, BMA150_BANDWIDTH_REG); | |
239 | } | |
240 | ||
5298cc4c | 241 | static int bma150_set_low_g_interrupt(struct bma150_data *bma150, |
c17ca3f5 EA |
242 | u8 enable, u8 hyst, u8 dur, u8 thres) |
243 | { | |
244 | int error; | |
245 | ||
246 | error = bma150_set_reg_bits(bma150->client, hyst, | |
247 | BMA150_LOW_G_HYST_POS, BMA150_LOW_G_HYST_MSK, | |
248 | BMA150_LOW_G_HYST_REG); | |
249 | if (error) | |
250 | return error; | |
251 | ||
252 | error = bma150_write_byte(bma150->client, BMA150_LOW_G_DUR_REG, dur); | |
253 | if (error) | |
254 | return error; | |
255 | ||
256 | error = bma150_write_byte(bma150->client, BMA150_LOW_G_THRES_REG, thres); | |
257 | if (error) | |
258 | return error; | |
259 | ||
260 | return bma150_set_reg_bits(bma150->client, !!enable, | |
261 | BMA150_LOW_G_EN_POS, BMA150_LOW_G_EN_MSK, | |
262 | BMA150_LOW_G_EN_REG); | |
263 | } | |
264 | ||
5298cc4c | 265 | static int bma150_set_high_g_interrupt(struct bma150_data *bma150, |
c17ca3f5 EA |
266 | u8 enable, u8 hyst, u8 dur, u8 thres) |
267 | { | |
268 | int error; | |
269 | ||
270 | error = bma150_set_reg_bits(bma150->client, hyst, | |
271 | BMA150_HIGH_G_HYST_POS, BMA150_HIGH_G_HYST_MSK, | |
272 | BMA150_HIGH_G_HYST_REG); | |
273 | if (error) | |
274 | return error; | |
275 | ||
276 | error = bma150_write_byte(bma150->client, | |
277 | BMA150_HIGH_G_DUR_REG, dur); | |
278 | if (error) | |
279 | return error; | |
280 | ||
281 | error = bma150_write_byte(bma150->client, | |
282 | BMA150_HIGH_G_THRES_REG, thres); | |
283 | if (error) | |
284 | return error; | |
285 | ||
286 | return bma150_set_reg_bits(bma150->client, !!enable, | |
287 | BMA150_HIGH_G_EN_POS, BMA150_HIGH_G_EN_MSK, | |
288 | BMA150_HIGH_G_EN_REG); | |
289 | } | |
290 | ||
291 | ||
5298cc4c | 292 | static int bma150_set_any_motion_interrupt(struct bma150_data *bma150, |
c17ca3f5 EA |
293 | u8 enable, u8 dur, u8 thres) |
294 | { | |
295 | int error; | |
296 | ||
297 | error = bma150_set_reg_bits(bma150->client, dur, | |
298 | BMA150_ANY_MOTION_DUR_POS, | |
299 | BMA150_ANY_MOTION_DUR_MSK, | |
300 | BMA150_ANY_MOTION_DUR_REG); | |
301 | if (error) | |
302 | return error; | |
303 | ||
304 | error = bma150_write_byte(bma150->client, | |
305 | BMA150_ANY_MOTION_THRES_REG, thres); | |
306 | if (error) | |
307 | return error; | |
308 | ||
309 | error = bma150_set_reg_bits(bma150->client, !!enable, | |
310 | BMA150_ADV_INT_EN_POS, BMA150_ADV_INT_EN_MSK, | |
311 | BMA150_ADV_INT_EN_REG); | |
312 | if (error) | |
313 | return error; | |
314 | ||
315 | return bma150_set_reg_bits(bma150->client, !!enable, | |
316 | BMA150_ANY_MOTION_EN_POS, | |
317 | BMA150_ANY_MOTION_EN_MSK, | |
318 | BMA150_ANY_MOTION_EN_REG); | |
319 | } | |
320 | ||
321 | static void bma150_report_xyz(struct bma150_data *bma150) | |
322 | { | |
323 | u8 data[BMA150_XYZ_DATA_SIZE]; | |
324 | s16 x, y, z; | |
325 | s32 ret; | |
326 | ||
327 | ret = i2c_smbus_read_i2c_block_data(bma150->client, | |
328 | BMA150_ACC_X_LSB_REG, BMA150_XYZ_DATA_SIZE, data); | |
329 | if (ret != BMA150_XYZ_DATA_SIZE) | |
330 | return; | |
331 | ||
332 | x = ((0xc0 & data[0]) >> 6) | (data[1] << 2); | |
333 | y = ((0xc0 & data[2]) >> 6) | (data[3] << 2); | |
334 | z = ((0xc0 & data[4]) >> 6) | (data[5] << 2); | |
335 | ||
b7e79329 MK |
336 | x = sign_extend32(x, 9); |
337 | y = sign_extend32(y, 9); | |
338 | z = sign_extend32(z, 9); | |
c17ca3f5 EA |
339 | |
340 | input_report_abs(bma150->input, ABS_X, x); | |
341 | input_report_abs(bma150->input, ABS_Y, y); | |
342 | input_report_abs(bma150->input, ABS_Z, z); | |
343 | input_sync(bma150->input); | |
344 | } | |
345 | ||
346 | static irqreturn_t bma150_irq_thread(int irq, void *dev) | |
347 | { | |
348 | bma150_report_xyz(dev); | |
349 | ||
350 | return IRQ_HANDLED; | |
351 | } | |
352 | ||
353 | static void bma150_poll(struct input_polled_dev *dev) | |
354 | { | |
355 | bma150_report_xyz(dev->private); | |
356 | } | |
357 | ||
358 | static int bma150_open(struct bma150_data *bma150) | |
359 | { | |
360 | int error; | |
361 | ||
362 | error = pm_runtime_get_sync(&bma150->client->dev); | |
79f34d19 | 363 | if (error < 0 && error != -ENOSYS) |
c17ca3f5 EA |
364 | return error; |
365 | ||
366 | /* | |
367 | * See if runtime PM woke up the device. If runtime PM | |
368 | * is disabled we need to do it ourselves. | |
369 | */ | |
370 | if (bma150->mode != BMA150_MODE_NORMAL) { | |
371 | error = bma150_set_mode(bma150, BMA150_MODE_NORMAL); | |
372 | if (error) | |
373 | return error; | |
374 | } | |
375 | ||
376 | return 0; | |
377 | } | |
378 | ||
379 | static void bma150_close(struct bma150_data *bma150) | |
380 | { | |
381 | pm_runtime_put_sync(&bma150->client->dev); | |
382 | ||
383 | if (bma150->mode != BMA150_MODE_SLEEP) | |
384 | bma150_set_mode(bma150, BMA150_MODE_SLEEP); | |
385 | } | |
386 | ||
387 | static int bma150_irq_open(struct input_dev *input) | |
388 | { | |
389 | struct bma150_data *bma150 = input_get_drvdata(input); | |
390 | ||
391 | return bma150_open(bma150); | |
392 | } | |
393 | ||
394 | static void bma150_irq_close(struct input_dev *input) | |
395 | { | |
396 | struct bma150_data *bma150 = input_get_drvdata(input); | |
397 | ||
398 | bma150_close(bma150); | |
399 | } | |
400 | ||
401 | static void bma150_poll_open(struct input_polled_dev *ipoll_dev) | |
402 | { | |
403 | struct bma150_data *bma150 = ipoll_dev->private; | |
404 | ||
405 | bma150_open(bma150); | |
406 | } | |
407 | ||
408 | static void bma150_poll_close(struct input_polled_dev *ipoll_dev) | |
409 | { | |
410 | struct bma150_data *bma150 = ipoll_dev->private; | |
411 | ||
412 | bma150_close(bma150); | |
413 | } | |
414 | ||
5298cc4c | 415 | static int bma150_initialize(struct bma150_data *bma150, |
c17ca3f5 EA |
416 | const struct bma150_cfg *cfg) |
417 | { | |
418 | int error; | |
419 | ||
420 | error = bma150_soft_reset(bma150); | |
421 | if (error) | |
422 | return error; | |
423 | ||
424 | error = bma150_set_bandwidth(bma150, cfg->bandwidth); | |
425 | if (error) | |
426 | return error; | |
427 | ||
428 | error = bma150_set_range(bma150, cfg->range); | |
429 | if (error) | |
430 | return error; | |
431 | ||
432 | if (bma150->client->irq) { | |
433 | error = bma150_set_any_motion_interrupt(bma150, | |
434 | cfg->any_motion_int, | |
435 | cfg->any_motion_dur, | |
436 | cfg->any_motion_thres); | |
437 | if (error) | |
438 | return error; | |
439 | ||
440 | error = bma150_set_high_g_interrupt(bma150, | |
441 | cfg->hg_int, cfg->hg_hyst, | |
442 | cfg->hg_dur, cfg->hg_thres); | |
443 | if (error) | |
444 | return error; | |
445 | ||
446 | error = bma150_set_low_g_interrupt(bma150, | |
447 | cfg->lg_int, cfg->lg_hyst, | |
448 | cfg->lg_dur, cfg->lg_thres); | |
449 | if (error) | |
450 | return error; | |
451 | } | |
452 | ||
453 | return bma150_set_mode(bma150, BMA150_MODE_SLEEP); | |
454 | } | |
455 | ||
5298cc4c | 456 | static void bma150_init_input_device(struct bma150_data *bma150, |
c17ca3f5 EA |
457 | struct input_dev *idev) |
458 | { | |
459 | idev->name = BMA150_DRIVER; | |
460 | idev->phys = BMA150_DRIVER "/input0"; | |
461 | idev->id.bustype = BUS_I2C; | |
462 | idev->dev.parent = &bma150->client->dev; | |
463 | ||
464 | idev->evbit[0] = BIT_MASK(EV_ABS); | |
465 | input_set_abs_params(idev, ABS_X, ABSMIN_ACC_VAL, ABSMAX_ACC_VAL, 0, 0); | |
466 | input_set_abs_params(idev, ABS_Y, ABSMIN_ACC_VAL, ABSMAX_ACC_VAL, 0, 0); | |
467 | input_set_abs_params(idev, ABS_Z, ABSMIN_ACC_VAL, ABSMAX_ACC_VAL, 0, 0); | |
468 | } | |
469 | ||
5298cc4c | 470 | static int bma150_register_input_device(struct bma150_data *bma150) |
c17ca3f5 EA |
471 | { |
472 | struct input_dev *idev; | |
473 | int error; | |
474 | ||
475 | idev = input_allocate_device(); | |
476 | if (!idev) | |
477 | return -ENOMEM; | |
478 | ||
479 | bma150_init_input_device(bma150, idev); | |
480 | ||
481 | idev->open = bma150_irq_open; | |
482 | idev->close = bma150_irq_close; | |
483 | input_set_drvdata(idev, bma150); | |
484 | ||
485 | error = input_register_device(idev); | |
486 | if (error) { | |
487 | input_free_device(idev); | |
488 | return error; | |
489 | } | |
490 | ||
491 | bma150->input = idev; | |
492 | return 0; | |
493 | } | |
494 | ||
5298cc4c | 495 | static int bma150_register_polled_device(struct bma150_data *bma150) |
c17ca3f5 EA |
496 | { |
497 | struct input_polled_dev *ipoll_dev; | |
498 | int error; | |
499 | ||
500 | ipoll_dev = input_allocate_polled_device(); | |
501 | if (!ipoll_dev) | |
502 | return -ENOMEM; | |
503 | ||
504 | ipoll_dev->private = bma150; | |
505 | ipoll_dev->open = bma150_poll_open; | |
506 | ipoll_dev->close = bma150_poll_close; | |
507 | ipoll_dev->poll = bma150_poll; | |
508 | ipoll_dev->poll_interval = BMA150_POLL_INTERVAL; | |
509 | ipoll_dev->poll_interval_min = BMA150_POLL_MIN; | |
510 | ipoll_dev->poll_interval_max = BMA150_POLL_MAX; | |
511 | ||
512 | bma150_init_input_device(bma150, ipoll_dev->input); | |
513 | ||
514 | error = input_register_polled_device(ipoll_dev); | |
515 | if (error) { | |
516 | input_free_polled_device(ipoll_dev); | |
517 | return error; | |
518 | } | |
519 | ||
520 | bma150->input_polled = ipoll_dev; | |
521 | bma150->input = ipoll_dev->input; | |
522 | ||
523 | return 0; | |
524 | } | |
525 | ||
5298cc4c | 526 | static int bma150_probe(struct i2c_client *client, |
c17ca3f5 EA |
527 | const struct i2c_device_id *id) |
528 | { | |
c838cb3d JH |
529 | const struct bma150_platform_data *pdata = |
530 | dev_get_platdata(&client->dev); | |
c17ca3f5 EA |
531 | const struct bma150_cfg *cfg; |
532 | struct bma150_data *bma150; | |
533 | int chip_id; | |
534 | int error; | |
535 | ||
536 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { | |
537 | dev_err(&client->dev, "i2c_check_functionality error\n"); | |
538 | return -EIO; | |
539 | } | |
540 | ||
541 | chip_id = i2c_smbus_read_byte_data(client, BMA150_CHIP_ID_REG); | |
ef3714fd | 542 | if (chip_id != BMA150_CHIP_ID && chip_id != BMA180_CHIP_ID) { |
c17ca3f5 EA |
543 | dev_err(&client->dev, "BMA150 chip id error: %d\n", chip_id); |
544 | return -EINVAL; | |
545 | } | |
546 | ||
547 | bma150 = kzalloc(sizeof(struct bma150_data), GFP_KERNEL); | |
548 | if (!bma150) | |
549 | return -ENOMEM; | |
550 | ||
551 | bma150->client = client; | |
552 | ||
553 | if (pdata) { | |
554 | if (pdata->irq_gpio_cfg) { | |
555 | error = pdata->irq_gpio_cfg(); | |
556 | if (error) { | |
557 | dev_err(&client->dev, | |
558 | "IRQ GPIO conf. error %d, error %d\n", | |
559 | client->irq, error); | |
560 | goto err_free_mem; | |
561 | } | |
562 | } | |
563 | cfg = &pdata->cfg; | |
564 | } else { | |
565 | cfg = &default_cfg; | |
566 | } | |
567 | ||
568 | error = bma150_initialize(bma150, cfg); | |
569 | if (error) | |
570 | goto err_free_mem; | |
571 | ||
572 | if (client->irq > 0) { | |
573 | error = bma150_register_input_device(bma150); | |
574 | if (error) | |
575 | goto err_free_mem; | |
576 | ||
577 | error = request_threaded_irq(client->irq, | |
578 | NULL, bma150_irq_thread, | |
579 | IRQF_TRIGGER_RISING | IRQF_ONESHOT, | |
580 | BMA150_DRIVER, bma150); | |
581 | if (error) { | |
582 | dev_err(&client->dev, | |
583 | "irq request failed %d, error %d\n", | |
584 | client->irq, error); | |
585 | input_unregister_device(bma150->input); | |
586 | goto err_free_mem; | |
587 | } | |
588 | } else { | |
589 | error = bma150_register_polled_device(bma150); | |
590 | if (error) | |
591 | goto err_free_mem; | |
592 | } | |
593 | ||
594 | i2c_set_clientdata(client, bma150); | |
595 | ||
596 | pm_runtime_enable(&client->dev); | |
597 | ||
598 | return 0; | |
599 | ||
600 | err_free_mem: | |
601 | kfree(bma150); | |
602 | return error; | |
603 | } | |
604 | ||
e2619cf7 | 605 | static int bma150_remove(struct i2c_client *client) |
c17ca3f5 EA |
606 | { |
607 | struct bma150_data *bma150 = i2c_get_clientdata(client); | |
608 | ||
609 | pm_runtime_disable(&client->dev); | |
610 | ||
611 | if (client->irq > 0) { | |
612 | free_irq(client->irq, bma150); | |
613 | input_unregister_device(bma150->input); | |
614 | } else { | |
615 | input_unregister_polled_device(bma150->input_polled); | |
616 | input_free_polled_device(bma150->input_polled); | |
617 | } | |
618 | ||
619 | kfree(bma150); | |
620 | ||
621 | return 0; | |
622 | } | |
623 | ||
624 | #ifdef CONFIG_PM | |
625 | static int bma150_suspend(struct device *dev) | |
626 | { | |
627 | struct i2c_client *client = to_i2c_client(dev); | |
628 | struct bma150_data *bma150 = i2c_get_clientdata(client); | |
629 | ||
630 | return bma150_set_mode(bma150, BMA150_MODE_SLEEP); | |
631 | } | |
632 | ||
633 | static int bma150_resume(struct device *dev) | |
634 | { | |
635 | struct i2c_client *client = to_i2c_client(dev); | |
636 | struct bma150_data *bma150 = i2c_get_clientdata(client); | |
637 | ||
638 | return bma150_set_mode(bma150, BMA150_MODE_NORMAL); | |
639 | } | |
640 | #endif | |
641 | ||
642 | static UNIVERSAL_DEV_PM_OPS(bma150_pm, bma150_suspend, bma150_resume, NULL); | |
643 | ||
644 | static const struct i2c_device_id bma150_id[] = { | |
645 | { "bma150", 0 }, | |
ef3714fd | 646 | { "bma180", 0 }, |
c17ca3f5 EA |
647 | { "smb380", 0 }, |
648 | { "bma023", 0 }, | |
649 | { } | |
650 | }; | |
651 | ||
652 | MODULE_DEVICE_TABLE(i2c, bma150_id); | |
653 | ||
654 | static struct i2c_driver bma150_driver = { | |
655 | .driver = { | |
c17ca3f5 EA |
656 | .name = BMA150_DRIVER, |
657 | .pm = &bma150_pm, | |
658 | }, | |
659 | .class = I2C_CLASS_HWMON, | |
660 | .id_table = bma150_id, | |
661 | .probe = bma150_probe, | |
1cb0aa88 | 662 | .remove = bma150_remove, |
c17ca3f5 EA |
663 | }; |
664 | ||
1b92c1cf | 665 | module_i2c_driver(bma150_driver); |
c17ca3f5 EA |
666 | |
667 | MODULE_AUTHOR("Albert Zhang <xu.zhang@bosch-sensortec.com>"); | |
668 | MODULE_DESCRIPTION("BMA150 driver"); | |
669 | MODULE_LICENSE("GPL"); |