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irqchip/omap-intc: Remove duplicate setup for IRQ chip type handler
[linux/fpc-iii.git] / drivers / iio / gyro / st_gyro_core.c
blob02eddcebeea3e97fd38c5a9bfa60e427bd9f1ac9
1 /*
2 * STMicroelectronics gyroscopes driver
3 *
4 * Copyright 2012-2013 STMicroelectronics Inc.
5 *
6 * Denis Ciocca <denis.ciocca@st.com>
7 *
8 * Licensed under the GPL-2.
9 */
10
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13 #include <linux/slab.h>
14 #include <linux/errno.h>
15 #include <linux/types.h>
16 #include <linux/mutex.h>
17 #include <linux/interrupt.h>
18 #include <linux/i2c.h>
19 #include <linux/gpio.h>
20 #include <linux/irq.h>
21 #include <linux/delay.h>
22 #include <linux/iio/iio.h>
23 #include <linux/iio/sysfs.h>
24 #include <linux/iio/trigger.h>
25 #include <linux/iio/buffer.h>
26
27 #include <linux/iio/common/st_sensors.h>
28 #include "st_gyro.h"
29
30 #define ST_GYRO_NUMBER_DATA_CHANNELS 3
31
32 /* DEFAULT VALUE FOR SENSORS */
33 #define ST_GYRO_DEFAULT_OUT_X_L_ADDR 0x28
34 #define ST_GYRO_DEFAULT_OUT_Y_L_ADDR 0x2a
35 #define ST_GYRO_DEFAULT_OUT_Z_L_ADDR 0x2c
36
37 /* FULLSCALE */
38 #define ST_GYRO_FS_AVL_250DPS 250
39 #define ST_GYRO_FS_AVL_500DPS 500
40 #define ST_GYRO_FS_AVL_2000DPS 2000
41
42 /* CUSTOM VALUES FOR SENSOR 1 */
43 #define ST_GYRO_1_WAI_EXP 0xd3
44 #define ST_GYRO_1_ODR_ADDR 0x20
45 #define ST_GYRO_1_ODR_MASK 0xc0
46 #define ST_GYRO_1_ODR_AVL_100HZ_VAL 0x00
47 #define ST_GYRO_1_ODR_AVL_200HZ_VAL 0x01
48 #define ST_GYRO_1_ODR_AVL_400HZ_VAL 0x02
49 #define ST_GYRO_1_ODR_AVL_800HZ_VAL 0x03
50 #define ST_GYRO_1_PW_ADDR 0x20
51 #define ST_GYRO_1_PW_MASK 0x08
52 #define ST_GYRO_1_FS_ADDR 0x23
53 #define ST_GYRO_1_FS_MASK 0x30
54 #define ST_GYRO_1_FS_AVL_250_VAL 0x00
55 #define ST_GYRO_1_FS_AVL_500_VAL 0x01
56 #define ST_GYRO_1_FS_AVL_2000_VAL 0x02
57 #define ST_GYRO_1_FS_AVL_250_GAIN IIO_DEGREE_TO_RAD(8750)
58 #define ST_GYRO_1_FS_AVL_500_GAIN IIO_DEGREE_TO_RAD(17500)
59 #define ST_GYRO_1_FS_AVL_2000_GAIN IIO_DEGREE_TO_RAD(70000)
60 #define ST_GYRO_1_BDU_ADDR 0x23
61 #define ST_GYRO_1_BDU_MASK 0x80
62 #define ST_GYRO_1_DRDY_IRQ_ADDR 0x22
63 #define ST_GYRO_1_DRDY_IRQ_INT2_MASK 0x08
64 #define ST_GYRO_1_MULTIREAD_BIT true
65
66 /* CUSTOM VALUES FOR SENSOR 2 */
67 #define ST_GYRO_2_WAI_EXP 0xd4
68 #define ST_GYRO_2_ODR_ADDR 0x20
69 #define ST_GYRO_2_ODR_MASK 0xc0
70 #define ST_GYRO_2_ODR_AVL_95HZ_VAL 0x00
71 #define ST_GYRO_2_ODR_AVL_190HZ_VAL 0x01
72 #define ST_GYRO_2_ODR_AVL_380HZ_VAL 0x02
73 #define ST_GYRO_2_ODR_AVL_760HZ_VAL 0x03
74 #define ST_GYRO_2_PW_ADDR 0x20
75 #define ST_GYRO_2_PW_MASK 0x08
76 #define ST_GYRO_2_FS_ADDR 0x23
77 #define ST_GYRO_2_FS_MASK 0x30
78 #define ST_GYRO_2_FS_AVL_250_VAL 0x00
79 #define ST_GYRO_2_FS_AVL_500_VAL 0x01
80 #define ST_GYRO_2_FS_AVL_2000_VAL 0x02
81 #define ST_GYRO_2_FS_AVL_250_GAIN IIO_DEGREE_TO_RAD(8750)
82 #define ST_GYRO_2_FS_AVL_500_GAIN IIO_DEGREE_TO_RAD(17500)
83 #define ST_GYRO_2_FS_AVL_2000_GAIN IIO_DEGREE_TO_RAD(70000)
84 #define ST_GYRO_2_BDU_ADDR 0x23
85 #define ST_GYRO_2_BDU_MASK 0x80
86 #define ST_GYRO_2_DRDY_IRQ_ADDR 0x22
87 #define ST_GYRO_2_DRDY_IRQ_INT2_MASK 0x08
88 #define ST_GYRO_2_MULTIREAD_BIT true
89
90 /* CUSTOM VALUES FOR SENSOR 3 */
91 #define ST_GYRO_3_WAI_EXP 0xd7
92 #define ST_GYRO_3_ODR_ADDR 0x20
93 #define ST_GYRO_3_ODR_MASK 0xc0
94 #define ST_GYRO_3_ODR_AVL_95HZ_VAL 0x00
95 #define ST_GYRO_3_ODR_AVL_190HZ_VAL 0x01
96 #define ST_GYRO_3_ODR_AVL_380HZ_VAL 0x02
97 #define ST_GYRO_3_ODR_AVL_760HZ_VAL 0x03
98 #define ST_GYRO_3_PW_ADDR 0x20
99 #define ST_GYRO_3_PW_MASK 0x08
100 #define ST_GYRO_3_FS_ADDR 0x23
101 #define ST_GYRO_3_FS_MASK 0x30
102 #define ST_GYRO_3_FS_AVL_250_VAL 0x00
103 #define ST_GYRO_3_FS_AVL_500_VAL 0x01
104 #define ST_GYRO_3_FS_AVL_2000_VAL 0x02
105 #define ST_GYRO_3_FS_AVL_250_GAIN IIO_DEGREE_TO_RAD(8750)
106 #define ST_GYRO_3_FS_AVL_500_GAIN IIO_DEGREE_TO_RAD(17500)
107 #define ST_GYRO_3_FS_AVL_2000_GAIN IIO_DEGREE_TO_RAD(70000)
108 #define ST_GYRO_3_BDU_ADDR 0x23
109 #define ST_GYRO_3_BDU_MASK 0x80
110 #define ST_GYRO_3_DRDY_IRQ_ADDR 0x22
111 #define ST_GYRO_3_DRDY_IRQ_INT2_MASK 0x08
112 #define ST_GYRO_3_MULTIREAD_BIT true
113
114
115 static const struct iio_chan_spec st_gyro_16bit_channels[] = {
116 ST_SENSORS_LSM_CHANNELS(IIO_ANGL_VEL,
117 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
118 ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16,
119 ST_GYRO_DEFAULT_OUT_X_L_ADDR),
120 ST_SENSORS_LSM_CHANNELS(IIO_ANGL_VEL,
121 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
122 ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16,
123 ST_GYRO_DEFAULT_OUT_Y_L_ADDR),
124 ST_SENSORS_LSM_CHANNELS(IIO_ANGL_VEL,
125 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
126 ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16,
127 ST_GYRO_DEFAULT_OUT_Z_L_ADDR),
128 IIO_CHAN_SOFT_TIMESTAMP(3)
129 };
130
131 static const struct st_sensor_settings st_gyro_sensors_settings[] = {
132 {
133 .wai = ST_GYRO_1_WAI_EXP,
134 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
135 .sensors_supported = {
136 [0] = L3G4200D_GYRO_DEV_NAME,
137 [1] = LSM330DL_GYRO_DEV_NAME,
138 },
139 .ch = (struct iio_chan_spec *)st_gyro_16bit_channels,
140 .odr = {
141 .addr = ST_GYRO_1_ODR_ADDR,
142 .mask = ST_GYRO_1_ODR_MASK,
143 .odr_avl = {
144 { 100, ST_GYRO_1_ODR_AVL_100HZ_VAL, },
145 { 200, ST_GYRO_1_ODR_AVL_200HZ_VAL, },
146 { 400, ST_GYRO_1_ODR_AVL_400HZ_VAL, },
147 { 800, ST_GYRO_1_ODR_AVL_800HZ_VAL, },
148 },
149 },
150 .pw = {
151 .addr = ST_GYRO_1_PW_ADDR,
152 .mask = ST_GYRO_1_PW_MASK,
153 .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
154 .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
155 },
156 .enable_axis = {
157 .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
158 .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
159 },
160 .fs = {
161 .addr = ST_GYRO_1_FS_ADDR,
162 .mask = ST_GYRO_1_FS_MASK,
163 .fs_avl = {
164 [0] = {
165 .num = ST_GYRO_FS_AVL_250DPS,
166 .value = ST_GYRO_1_FS_AVL_250_VAL,
167 .gain = ST_GYRO_1_FS_AVL_250_GAIN,
168 },
169 [1] = {
170 .num = ST_GYRO_FS_AVL_500DPS,
171 .value = ST_GYRO_1_FS_AVL_500_VAL,
172 .gain = ST_GYRO_1_FS_AVL_500_GAIN,
173 },
174 [2] = {
175 .num = ST_GYRO_FS_AVL_2000DPS,
176 .value = ST_GYRO_1_FS_AVL_2000_VAL,
177 .gain = ST_GYRO_1_FS_AVL_2000_GAIN,
178 },
179 },
180 },
181 .bdu = {
182 .addr = ST_GYRO_1_BDU_ADDR,
183 .mask = ST_GYRO_1_BDU_MASK,
184 },
185 .drdy_irq = {
186 .addr = ST_GYRO_1_DRDY_IRQ_ADDR,
187 .mask_int2 = ST_GYRO_1_DRDY_IRQ_INT2_MASK,
188 },
189 .multi_read_bit = ST_GYRO_1_MULTIREAD_BIT,
190 .bootime = 2,
191 },
192 {
193 .wai = ST_GYRO_2_WAI_EXP,
194 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
195 .sensors_supported = {
196 [0] = L3GD20_GYRO_DEV_NAME,
197 [1] = LSM330D_GYRO_DEV_NAME,
198 [2] = LSM330DLC_GYRO_DEV_NAME,
199 [3] = L3G4IS_GYRO_DEV_NAME,
200 [4] = LSM330_GYRO_DEV_NAME,
201 },
202 .ch = (struct iio_chan_spec *)st_gyro_16bit_channels,
203 .odr = {
204 .addr = ST_GYRO_2_ODR_ADDR,
205 .mask = ST_GYRO_2_ODR_MASK,
206 .odr_avl = {
207 { 95, ST_GYRO_2_ODR_AVL_95HZ_VAL, },
208 { 190, ST_GYRO_2_ODR_AVL_190HZ_VAL, },
209 { 380, ST_GYRO_2_ODR_AVL_380HZ_VAL, },
210 { 760, ST_GYRO_2_ODR_AVL_760HZ_VAL, },
211 },
212 },
213 .pw = {
214 .addr = ST_GYRO_2_PW_ADDR,
215 .mask = ST_GYRO_2_PW_MASK,
216 .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
217 .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
218 },
219 .enable_axis = {
220 .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
221 .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
222 },
223 .fs = {
224 .addr = ST_GYRO_2_FS_ADDR,
225 .mask = ST_GYRO_2_FS_MASK,
226 .fs_avl = {
227 [0] = {
228 .num = ST_GYRO_FS_AVL_250DPS,
229 .value = ST_GYRO_2_FS_AVL_250_VAL,
230 .gain = ST_GYRO_2_FS_AVL_250_GAIN,
231 },
232 [1] = {
233 .num = ST_GYRO_FS_AVL_500DPS,
234 .value = ST_GYRO_2_FS_AVL_500_VAL,
235 .gain = ST_GYRO_2_FS_AVL_500_GAIN,
236 },
237 [2] = {
238 .num = ST_GYRO_FS_AVL_2000DPS,
239 .value = ST_GYRO_2_FS_AVL_2000_VAL,
240 .gain = ST_GYRO_2_FS_AVL_2000_GAIN,
241 },
242 },
243 },
244 .bdu = {
245 .addr = ST_GYRO_2_BDU_ADDR,
246 .mask = ST_GYRO_2_BDU_MASK,
247 },
248 .drdy_irq = {
249 .addr = ST_GYRO_2_DRDY_IRQ_ADDR,
250 .mask_int2 = ST_GYRO_2_DRDY_IRQ_INT2_MASK,
251 },
252 .multi_read_bit = ST_GYRO_2_MULTIREAD_BIT,
253 .bootime = 2,
254 },
255 {
256 .wai = ST_GYRO_3_WAI_EXP,
257 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
258 .sensors_supported = {
259 [0] = L3GD20_GYRO_DEV_NAME,
260 },
261 .ch = (struct iio_chan_spec *)st_gyro_16bit_channels,
262 .odr = {
263 .addr = ST_GYRO_3_ODR_ADDR,
264 .mask = ST_GYRO_3_ODR_MASK,
265 .odr_avl = {
266 { 95, ST_GYRO_3_ODR_AVL_95HZ_VAL, },
267 { 190, ST_GYRO_3_ODR_AVL_190HZ_VAL, },
268 { 380, ST_GYRO_3_ODR_AVL_380HZ_VAL, },
269 { 760, ST_GYRO_3_ODR_AVL_760HZ_VAL, },
270 },
271 },
272 .pw = {
273 .addr = ST_GYRO_3_PW_ADDR,
274 .mask = ST_GYRO_3_PW_MASK,
275 .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
276 .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
277 },
278 .enable_axis = {
279 .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
280 .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
281 },
282 .fs = {
283 .addr = ST_GYRO_3_FS_ADDR,
284 .mask = ST_GYRO_3_FS_MASK,
285 .fs_avl = {
286 [0] = {
287 .num = ST_GYRO_FS_AVL_250DPS,
288 .value = ST_GYRO_3_FS_AVL_250_VAL,
289 .gain = ST_GYRO_3_FS_AVL_250_GAIN,
290 },
291 [1] = {
292 .num = ST_GYRO_FS_AVL_500DPS,
293 .value = ST_GYRO_3_FS_AVL_500_VAL,
294 .gain = ST_GYRO_3_FS_AVL_500_GAIN,
295 },
296 [2] = {
297 .num = ST_GYRO_FS_AVL_2000DPS,
298 .value = ST_GYRO_3_FS_AVL_2000_VAL,
299 .gain = ST_GYRO_3_FS_AVL_2000_GAIN,
300 },
301 },
302 },
303 .bdu = {
304 .addr = ST_GYRO_3_BDU_ADDR,
305 .mask = ST_GYRO_3_BDU_MASK,
306 },
307 .drdy_irq = {
308 .addr = ST_GYRO_3_DRDY_IRQ_ADDR,
309 .mask_int2 = ST_GYRO_3_DRDY_IRQ_INT2_MASK,
310 },
311 .multi_read_bit = ST_GYRO_3_MULTIREAD_BIT,
312 .bootime = 2,
313 },
314 };
315
316 static int st_gyro_read_raw(struct iio_dev *indio_dev,
317 struct iio_chan_spec const *ch, int *val,
318 int *val2, long mask)
319 {
320 int err;
321 struct st_sensor_data *gdata = iio_priv(indio_dev);
322
323 switch (mask) {
324 case IIO_CHAN_INFO_RAW:
325 err = st_sensors_read_info_raw(indio_dev, ch, val);
326 if (err < 0)
327 goto read_error;
328
329 return IIO_VAL_INT;
330 case IIO_CHAN_INFO_SCALE:
331 *val = 0;
332 *val2 = gdata->current_fullscale->gain;
333 return IIO_VAL_INT_PLUS_MICRO;
334 case IIO_CHAN_INFO_SAMP_FREQ:
335 *val = gdata->odr;
336 return IIO_VAL_INT;
337 default:
338 return -EINVAL;
339 }
340
341 read_error:
342 return err;
343 }
344
345 static int st_gyro_write_raw(struct iio_dev *indio_dev,
346 struct iio_chan_spec const *chan, int val, int val2, long mask)
347 {
348 int err;
349
350 switch (mask) {
351 case IIO_CHAN_INFO_SCALE:
352 err = st_sensors_set_fullscale_by_gain(indio_dev, val2);
353 break;
354 case IIO_CHAN_INFO_SAMP_FREQ:
355 if (val2)
356 return -EINVAL;
357 mutex_lock(&indio_dev->mlock);
358 err = st_sensors_set_odr(indio_dev, val);
359 mutex_unlock(&indio_dev->mlock);
360 return err;
361 default:
362 err = -EINVAL;
363 }
364
365 return err;
366 }
367
368 static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL();
369 static ST_SENSORS_DEV_ATTR_SCALE_AVAIL(in_anglvel_scale_available);
370
371 static struct attribute *st_gyro_attributes[] = {
372 &iio_dev_attr_sampling_frequency_available.dev_attr.attr,
373 &iio_dev_attr_in_anglvel_scale_available.dev_attr.attr,
374 NULL,
375 };
376
377 static const struct attribute_group st_gyro_attribute_group = {
378 .attrs = st_gyro_attributes,
379 };
380
381 static const struct iio_info gyro_info = {
382 .driver_module = THIS_MODULE,
383 .attrs = &st_gyro_attribute_group,
384 .read_raw = &st_gyro_read_raw,
385 .write_raw = &st_gyro_write_raw,
386 .debugfs_reg_access = &st_sensors_debugfs_reg_access,
387 };
388
389 #ifdef CONFIG_IIO_TRIGGER
390 static const struct iio_trigger_ops st_gyro_trigger_ops = {
391 .owner = THIS_MODULE,
392 .set_trigger_state = ST_GYRO_TRIGGER_SET_STATE,
393 };
394 #define ST_GYRO_TRIGGER_OPS (&st_gyro_trigger_ops)
395 #else
396 #define ST_GYRO_TRIGGER_OPS NULL
397 #endif
398
399 int st_gyro_common_probe(struct iio_dev *indio_dev)
400 {
401 struct st_sensor_data *gdata = iio_priv(indio_dev);
402 int irq = gdata->get_irq_data_ready(indio_dev);
403 int err;
404
405 indio_dev->modes = INDIO_DIRECT_MODE;
406 indio_dev->info = &gyro_info;
407 mutex_init(&gdata->tb.buf_lock);
408
409 st_sensors_power_enable(indio_dev);
410
411 err = st_sensors_check_device_support(indio_dev,
412 ARRAY_SIZE(st_gyro_sensors_settings),
413 st_gyro_sensors_settings);
414 if (err < 0)
415 return err;
416
417 gdata->num_data_channels = ST_GYRO_NUMBER_DATA_CHANNELS;
418 gdata->multiread_bit = gdata->sensor_settings->multi_read_bit;
419 indio_dev->channels = gdata->sensor_settings->ch;
420 indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS;
421
422 gdata->current_fullscale = (struct st_sensor_fullscale_avl *)
423 &gdata->sensor_settings->fs.fs_avl[0];
424 gdata->odr = gdata->sensor_settings->odr.odr_avl[0].hz;
425
426 err = st_sensors_init_sensor(indio_dev,
427 (struct st_sensors_platform_data *)&gyro_pdata);
428 if (err < 0)
429 return err;
430
431 err = st_gyro_allocate_ring(indio_dev);
432 if (err < 0)
433 return err;
434
435 if (irq > 0) {
436 err = st_sensors_allocate_trigger(indio_dev,
437 ST_GYRO_TRIGGER_OPS);
438 if (err < 0)
439 goto st_gyro_probe_trigger_error;
440 }
441
442 err = iio_device_register(indio_dev);
443 if (err)
444 goto st_gyro_device_register_error;
445
446 dev_info(&indio_dev->dev, "registered gyroscope %s\n",
447 indio_dev->name);
448
449 return 0;
450
451 st_gyro_device_register_error:
452 if (irq > 0)
453 st_sensors_deallocate_trigger(indio_dev);
454 st_gyro_probe_trigger_error:
455 st_gyro_deallocate_ring(indio_dev);
456
457 return err;
458 }
459 EXPORT_SYMBOL(st_gyro_common_probe);
460
461 void st_gyro_common_remove(struct iio_dev *indio_dev)
462 {
463 struct st_sensor_data *gdata = iio_priv(indio_dev);
464
465 st_sensors_power_disable(indio_dev);
466
467 iio_device_unregister(indio_dev);
468 if (gdata->get_irq_data_ready(indio_dev) > 0)
469 st_sensors_deallocate_trigger(indio_dev);
470
471 st_gyro_deallocate_ring(indio_dev);
472 }
473 EXPORT_SYMBOL(st_gyro_common_remove);
474
475 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
476 MODULE_DESCRIPTION("STMicroelectronics gyroscopes driver");
477 MODULE_LICENSE("GPL v2");
Linux with added FPC-III support