Commit | Line | Data |
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217494e5 DC |
1 | /* |
2 | * STMicroelectronics pressures driver | |
3 | * | |
4 | * Copyright 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 | #include <asm/unaligned.h> | |
27 | ||
28 | #include <linux/iio/common/st_sensors.h> | |
29 | #include "st_pressure.h" | |
30 | ||
67dbf54a JA |
31 | #define ST_PRESS_LSB_PER_MBAR 4096UL |
32 | #define ST_PRESS_KPASCAL_NANO_SCALE (100000000UL / \ | |
33 | ST_PRESS_LSB_PER_MBAR) | |
1003eb67 JA |
34 | #define ST_PRESS_LSB_PER_CELSIUS 480UL |
35 | #define ST_PRESS_CELSIUS_NANO_SCALE (1000000000UL / \ | |
36 | ST_PRESS_LSB_PER_CELSIUS) | |
217494e5 DC |
37 | #define ST_PRESS_NUMBER_DATA_CHANNELS 1 |
38 | ||
217494e5 DC |
39 | /* FULLSCALE */ |
40 | #define ST_PRESS_FS_AVL_1260MB 1260 | |
41 | ||
93187840 DC |
42 | #define ST_PRESS_1_OUT_XL_ADDR 0x28 |
43 | #define ST_TEMP_1_OUT_L_ADDR 0x2b | |
44 | ||
302fbd50 LJ |
45 | /* CUSTOM VALUES FOR LPS331AP SENSOR */ |
46 | #define ST_PRESS_LPS331AP_WAI_EXP 0xbb | |
47 | #define ST_PRESS_LPS331AP_ODR_ADDR 0x20 | |
48 | #define ST_PRESS_LPS331AP_ODR_MASK 0x70 | |
49 | #define ST_PRESS_LPS331AP_ODR_AVL_1HZ_VAL 0x01 | |
50 | #define ST_PRESS_LPS331AP_ODR_AVL_7HZ_VAL 0x05 | |
51 | #define ST_PRESS_LPS331AP_ODR_AVL_13HZ_VAL 0x06 | |
52 | #define ST_PRESS_LPS331AP_ODR_AVL_25HZ_VAL 0x07 | |
53 | #define ST_PRESS_LPS331AP_PW_ADDR 0x20 | |
54 | #define ST_PRESS_LPS331AP_PW_MASK 0x80 | |
55 | #define ST_PRESS_LPS331AP_FS_ADDR 0x23 | |
56 | #define ST_PRESS_LPS331AP_FS_MASK 0x30 | |
57 | #define ST_PRESS_LPS331AP_FS_AVL_1260_VAL 0x00 | |
58 | #define ST_PRESS_LPS331AP_FS_AVL_1260_GAIN ST_PRESS_KPASCAL_NANO_SCALE | |
59 | #define ST_PRESS_LPS331AP_FS_AVL_TEMP_GAIN ST_PRESS_CELSIUS_NANO_SCALE | |
60 | #define ST_PRESS_LPS331AP_BDU_ADDR 0x20 | |
61 | #define ST_PRESS_LPS331AP_BDU_MASK 0x04 | |
62 | #define ST_PRESS_LPS331AP_DRDY_IRQ_ADDR 0x22 | |
63 | #define ST_PRESS_LPS331AP_DRDY_IRQ_INT1_MASK 0x04 | |
64 | #define ST_PRESS_LPS331AP_DRDY_IRQ_INT2_MASK 0x20 | |
a9fd053b LW |
65 | #define ST_PRESS_LPS331AP_IHL_IRQ_ADDR 0x22 |
66 | #define ST_PRESS_LPS331AP_IHL_IRQ_MASK 0x80 | |
0e6f6871 LW |
67 | #define ST_PRESS_LPS331AP_OD_IRQ_ADDR 0x22 |
68 | #define ST_PRESS_LPS331AP_OD_IRQ_MASK 0x40 | |
302fbd50 LJ |
69 | #define ST_PRESS_LPS331AP_MULTIREAD_BIT true |
70 | #define ST_PRESS_LPS331AP_TEMP_OFFSET 42500 | |
217494e5 | 71 | |
7885a8ce LJ |
72 | /* CUSTOM VALUES FOR LPS001WP SENSOR */ |
73 | #define ST_PRESS_LPS001WP_WAI_EXP 0xba | |
74 | #define ST_PRESS_LPS001WP_ODR_ADDR 0x20 | |
75 | #define ST_PRESS_LPS001WP_ODR_MASK 0x30 | |
76 | #define ST_PRESS_LPS001WP_ODR_AVL_1HZ_VAL 0x01 | |
77 | #define ST_PRESS_LPS001WP_ODR_AVL_7HZ_VAL 0x02 | |
78 | #define ST_PRESS_LPS001WP_ODR_AVL_13HZ_VAL 0x03 | |
79 | #define ST_PRESS_LPS001WP_PW_ADDR 0x20 | |
80 | #define ST_PRESS_LPS001WP_PW_MASK 0x40 | |
81 | #define ST_PRESS_LPS001WP_BDU_ADDR 0x20 | |
82 | #define ST_PRESS_LPS001WP_BDU_MASK 0x04 | |
83 | #define ST_PRESS_LPS001WP_MULTIREAD_BIT true | |
84 | #define ST_PRESS_LPS001WP_OUT_L_ADDR 0x28 | |
85 | #define ST_TEMP_LPS001WP_OUT_L_ADDR 0x2a | |
86 | ||
93187840 DC |
87 | /* CUSTOM VALUES FOR LPS25H SENSOR */ |
88 | #define ST_PRESS_LPS25H_WAI_EXP 0xbd | |
89 | #define ST_PRESS_LPS25H_ODR_ADDR 0x20 | |
90 | #define ST_PRESS_LPS25H_ODR_MASK 0x70 | |
91 | #define ST_PRESS_LPS25H_ODR_AVL_1HZ_VAL 0x01 | |
92 | #define ST_PRESS_LPS25H_ODR_AVL_7HZ_VAL 0x02 | |
93 | #define ST_PRESS_LPS25H_ODR_AVL_13HZ_VAL 0x03 | |
94 | #define ST_PRESS_LPS25H_ODR_AVL_25HZ_VAL 0x04 | |
95 | #define ST_PRESS_LPS25H_PW_ADDR 0x20 | |
96 | #define ST_PRESS_LPS25H_PW_MASK 0x80 | |
97 | #define ST_PRESS_LPS25H_FS_ADDR 0x00 | |
98 | #define ST_PRESS_LPS25H_FS_MASK 0x00 | |
99 | #define ST_PRESS_LPS25H_FS_AVL_1260_VAL 0x00 | |
100 | #define ST_PRESS_LPS25H_FS_AVL_1260_GAIN ST_PRESS_KPASCAL_NANO_SCALE | |
101 | #define ST_PRESS_LPS25H_FS_AVL_TEMP_GAIN ST_PRESS_CELSIUS_NANO_SCALE | |
102 | #define ST_PRESS_LPS25H_BDU_ADDR 0x20 | |
103 | #define ST_PRESS_LPS25H_BDU_MASK 0x04 | |
104 | #define ST_PRESS_LPS25H_DRDY_IRQ_ADDR 0x23 | |
105 | #define ST_PRESS_LPS25H_DRDY_IRQ_INT1_MASK 0x01 | |
106 | #define ST_PRESS_LPS25H_DRDY_IRQ_INT2_MASK 0x10 | |
a9fd053b LW |
107 | #define ST_PRESS_LPS25H_IHL_IRQ_ADDR 0x22 |
108 | #define ST_PRESS_LPS25H_IHL_IRQ_MASK 0x80 | |
0e6f6871 LW |
109 | #define ST_PRESS_LPS25H_OD_IRQ_ADDR 0x22 |
110 | #define ST_PRESS_LPS25H_OD_IRQ_MASK 0x40 | |
93187840 DC |
111 | #define ST_PRESS_LPS25H_MULTIREAD_BIT true |
112 | #define ST_PRESS_LPS25H_TEMP_OFFSET 42500 | |
113 | #define ST_PRESS_LPS25H_OUT_XL_ADDR 0x28 | |
114 | #define ST_TEMP_LPS25H_OUT_L_ADDR 0x2b | |
115 | ||
116 | static const struct iio_chan_spec st_press_1_channels[] = { | |
2f5effcb LJ |
117 | { |
118 | .type = IIO_PRESSURE, | |
119 | .channel2 = IIO_NO_MOD, | |
93187840 | 120 | .address = ST_PRESS_1_OUT_XL_ADDR, |
2f5effcb LJ |
121 | .scan_index = ST_SENSORS_SCAN_X, |
122 | .scan_type = { | |
123 | .sign = 'u', | |
124 | .realbits = 24, | |
125 | .storagebits = 24, | |
126 | .endianness = IIO_LE, | |
127 | }, | |
128 | .info_mask_separate = | |
217494e5 | 129 | BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), |
2f5effcb LJ |
130 | .modified = 0, |
131 | }, | |
132 | { | |
133 | .type = IIO_TEMP, | |
134 | .channel2 = IIO_NO_MOD, | |
93187840 | 135 | .address = ST_TEMP_1_OUT_L_ADDR, |
2f5effcb LJ |
136 | .scan_index = -1, |
137 | .scan_type = { | |
138 | .sign = 'u', | |
139 | .realbits = 16, | |
140 | .storagebits = 16, | |
141 | .endianness = IIO_LE, | |
142 | }, | |
143 | .info_mask_separate = | |
144 | BIT(IIO_CHAN_INFO_RAW) | | |
145 | BIT(IIO_CHAN_INFO_SCALE) | | |
146 | BIT(IIO_CHAN_INFO_OFFSET), | |
147 | .modified = 0, | |
148 | }, | |
217494e5 DC |
149 | IIO_CHAN_SOFT_TIMESTAMP(1) |
150 | }; | |
151 | ||
7885a8ce LJ |
152 | static const struct iio_chan_spec st_press_lps001wp_channels[] = { |
153 | { | |
154 | .type = IIO_PRESSURE, | |
155 | .channel2 = IIO_NO_MOD, | |
156 | .address = ST_PRESS_LPS001WP_OUT_L_ADDR, | |
157 | .scan_index = ST_SENSORS_SCAN_X, | |
158 | .scan_type = { | |
159 | .sign = 'u', | |
160 | .realbits = 16, | |
161 | .storagebits = 16, | |
162 | .endianness = IIO_LE, | |
163 | }, | |
164 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), | |
165 | .modified = 0, | |
166 | }, | |
167 | { | |
168 | .type = IIO_TEMP, | |
169 | .channel2 = IIO_NO_MOD, | |
170 | .address = ST_TEMP_LPS001WP_OUT_L_ADDR, | |
171 | .scan_index = -1, | |
172 | .scan_type = { | |
173 | .sign = 'u', | |
174 | .realbits = 16, | |
175 | .storagebits = 16, | |
176 | .endianness = IIO_LE, | |
177 | }, | |
178 | .info_mask_separate = | |
179 | BIT(IIO_CHAN_INFO_RAW) | | |
180 | BIT(IIO_CHAN_INFO_OFFSET), | |
181 | .modified = 0, | |
182 | }, | |
183 | IIO_CHAN_SOFT_TIMESTAMP(1) | |
184 | }; | |
185 | ||
a7ee8839 | 186 | static const struct st_sensor_settings st_press_sensors_settings[] = { |
217494e5 | 187 | { |
302fbd50 | 188 | .wai = ST_PRESS_LPS331AP_WAI_EXP, |
bc27381e | 189 | .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS, |
217494e5 DC |
190 | .sensors_supported = { |
191 | [0] = LPS331AP_PRESS_DEV_NAME, | |
192 | }, | |
93187840 DC |
193 | .ch = (struct iio_chan_spec *)st_press_1_channels, |
194 | .num_ch = ARRAY_SIZE(st_press_1_channels), | |
217494e5 | 195 | .odr = { |
302fbd50 LJ |
196 | .addr = ST_PRESS_LPS331AP_ODR_ADDR, |
197 | .mask = ST_PRESS_LPS331AP_ODR_MASK, | |
217494e5 | 198 | .odr_avl = { |
302fbd50 LJ |
199 | { 1, ST_PRESS_LPS331AP_ODR_AVL_1HZ_VAL, }, |
200 | { 7, ST_PRESS_LPS331AP_ODR_AVL_7HZ_VAL, }, | |
201 | { 13, ST_PRESS_LPS331AP_ODR_AVL_13HZ_VAL, }, | |
202 | { 25, ST_PRESS_LPS331AP_ODR_AVL_25HZ_VAL, }, | |
217494e5 DC |
203 | }, |
204 | }, | |
205 | .pw = { | |
302fbd50 LJ |
206 | .addr = ST_PRESS_LPS331AP_PW_ADDR, |
207 | .mask = ST_PRESS_LPS331AP_PW_MASK, | |
217494e5 DC |
208 | .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE, |
209 | .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE, | |
210 | }, | |
211 | .fs = { | |
302fbd50 LJ |
212 | .addr = ST_PRESS_LPS331AP_FS_ADDR, |
213 | .mask = ST_PRESS_LPS331AP_FS_MASK, | |
217494e5 DC |
214 | .fs_avl = { |
215 | [0] = { | |
216 | .num = ST_PRESS_FS_AVL_1260MB, | |
302fbd50 LJ |
217 | .value = ST_PRESS_LPS331AP_FS_AVL_1260_VAL, |
218 | .gain = ST_PRESS_LPS331AP_FS_AVL_1260_GAIN, | |
219 | .gain2 = ST_PRESS_LPS331AP_FS_AVL_TEMP_GAIN, | |
217494e5 DC |
220 | }, |
221 | }, | |
222 | }, | |
223 | .bdu = { | |
302fbd50 LJ |
224 | .addr = ST_PRESS_LPS331AP_BDU_ADDR, |
225 | .mask = ST_PRESS_LPS331AP_BDU_MASK, | |
217494e5 DC |
226 | }, |
227 | .drdy_irq = { | |
302fbd50 LJ |
228 | .addr = ST_PRESS_LPS331AP_DRDY_IRQ_ADDR, |
229 | .mask_int1 = ST_PRESS_LPS331AP_DRDY_IRQ_INT1_MASK, | |
230 | .mask_int2 = ST_PRESS_LPS331AP_DRDY_IRQ_INT2_MASK, | |
a9fd053b LW |
231 | .addr_ihl = ST_PRESS_LPS331AP_IHL_IRQ_ADDR, |
232 | .mask_ihl = ST_PRESS_LPS331AP_IHL_IRQ_MASK, | |
0e6f6871 LW |
233 | .addr_od = ST_PRESS_LPS331AP_OD_IRQ_ADDR, |
234 | .mask_od = ST_PRESS_LPS331AP_OD_IRQ_MASK, | |
97865fe4 | 235 | .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR, |
217494e5 | 236 | }, |
302fbd50 | 237 | .multi_read_bit = ST_PRESS_LPS331AP_MULTIREAD_BIT, |
217494e5 DC |
238 | .bootime = 2, |
239 | }, | |
7885a8ce LJ |
240 | { |
241 | .wai = ST_PRESS_LPS001WP_WAI_EXP, | |
bc27381e | 242 | .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS, |
7885a8ce LJ |
243 | .sensors_supported = { |
244 | [0] = LPS001WP_PRESS_DEV_NAME, | |
245 | }, | |
246 | .ch = (struct iio_chan_spec *)st_press_lps001wp_channels, | |
247 | .num_ch = ARRAY_SIZE(st_press_lps001wp_channels), | |
248 | .odr = { | |
249 | .addr = ST_PRESS_LPS001WP_ODR_ADDR, | |
250 | .mask = ST_PRESS_LPS001WP_ODR_MASK, | |
251 | .odr_avl = { | |
252 | { 1, ST_PRESS_LPS001WP_ODR_AVL_1HZ_VAL, }, | |
253 | { 7, ST_PRESS_LPS001WP_ODR_AVL_7HZ_VAL, }, | |
254 | { 13, ST_PRESS_LPS001WP_ODR_AVL_13HZ_VAL, }, | |
255 | }, | |
256 | }, | |
257 | .pw = { | |
258 | .addr = ST_PRESS_LPS001WP_PW_ADDR, | |
259 | .mask = ST_PRESS_LPS001WP_PW_MASK, | |
260 | .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE, | |
261 | .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE, | |
262 | }, | |
263 | .fs = { | |
264 | .addr = 0, | |
265 | }, | |
266 | .bdu = { | |
267 | .addr = ST_PRESS_LPS001WP_BDU_ADDR, | |
268 | .mask = ST_PRESS_LPS001WP_BDU_MASK, | |
269 | }, | |
270 | .drdy_irq = { | |
271 | .addr = 0, | |
272 | }, | |
273 | .multi_read_bit = ST_PRESS_LPS001WP_MULTIREAD_BIT, | |
274 | .bootime = 2, | |
275 | }, | |
93187840 DC |
276 | { |
277 | .wai = ST_PRESS_LPS25H_WAI_EXP, | |
bc27381e | 278 | .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS, |
93187840 DC |
279 | .sensors_supported = { |
280 | [0] = LPS25H_PRESS_DEV_NAME, | |
281 | }, | |
282 | .ch = (struct iio_chan_spec *)st_press_1_channels, | |
283 | .num_ch = ARRAY_SIZE(st_press_1_channels), | |
284 | .odr = { | |
285 | .addr = ST_PRESS_LPS25H_ODR_ADDR, | |
286 | .mask = ST_PRESS_LPS25H_ODR_MASK, | |
287 | .odr_avl = { | |
288 | { 1, ST_PRESS_LPS25H_ODR_AVL_1HZ_VAL, }, | |
289 | { 7, ST_PRESS_LPS25H_ODR_AVL_7HZ_VAL, }, | |
290 | { 13, ST_PRESS_LPS25H_ODR_AVL_13HZ_VAL, }, | |
291 | { 25, ST_PRESS_LPS25H_ODR_AVL_25HZ_VAL, }, | |
292 | }, | |
293 | }, | |
294 | .pw = { | |
295 | .addr = ST_PRESS_LPS25H_PW_ADDR, | |
296 | .mask = ST_PRESS_LPS25H_PW_MASK, | |
297 | .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE, | |
298 | .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE, | |
299 | }, | |
300 | .fs = { | |
301 | .addr = ST_PRESS_LPS25H_FS_ADDR, | |
302 | .mask = ST_PRESS_LPS25H_FS_MASK, | |
303 | .fs_avl = { | |
304 | [0] = { | |
305 | .num = ST_PRESS_FS_AVL_1260MB, | |
306 | .value = ST_PRESS_LPS25H_FS_AVL_1260_VAL, | |
307 | .gain = ST_PRESS_LPS25H_FS_AVL_1260_GAIN, | |
308 | .gain2 = ST_PRESS_LPS25H_FS_AVL_TEMP_GAIN, | |
309 | }, | |
310 | }, | |
311 | }, | |
312 | .bdu = { | |
313 | .addr = ST_PRESS_LPS25H_BDU_ADDR, | |
314 | .mask = ST_PRESS_LPS25H_BDU_MASK, | |
315 | }, | |
316 | .drdy_irq = { | |
317 | .addr = ST_PRESS_LPS25H_DRDY_IRQ_ADDR, | |
318 | .mask_int1 = ST_PRESS_LPS25H_DRDY_IRQ_INT1_MASK, | |
319 | .mask_int2 = ST_PRESS_LPS25H_DRDY_IRQ_INT2_MASK, | |
a9fd053b LW |
320 | .addr_ihl = ST_PRESS_LPS25H_IHL_IRQ_ADDR, |
321 | .mask_ihl = ST_PRESS_LPS25H_IHL_IRQ_MASK, | |
0e6f6871 LW |
322 | .addr_od = ST_PRESS_LPS25H_OD_IRQ_ADDR, |
323 | .mask_od = ST_PRESS_LPS25H_OD_IRQ_MASK, | |
97865fe4 | 324 | .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR, |
93187840 DC |
325 | }, |
326 | .multi_read_bit = ST_PRESS_LPS25H_MULTIREAD_BIT, | |
327 | .bootime = 2, | |
328 | }, | |
217494e5 DC |
329 | }; |
330 | ||
2d239c9e JC |
331 | static int st_press_write_raw(struct iio_dev *indio_dev, |
332 | struct iio_chan_spec const *ch, | |
333 | int val, | |
334 | int val2, | |
335 | long mask) | |
336 | { | |
337 | int err; | |
338 | ||
339 | switch (mask) { | |
340 | case IIO_CHAN_INFO_SAMP_FREQ: | |
341 | if (val2) | |
342 | return -EINVAL; | |
343 | mutex_lock(&indio_dev->mlock); | |
344 | err = st_sensors_set_odr(indio_dev, val); | |
345 | mutex_unlock(&indio_dev->mlock); | |
346 | return err; | |
347 | default: | |
348 | return -EINVAL; | |
349 | } | |
350 | } | |
351 | ||
217494e5 DC |
352 | static int st_press_read_raw(struct iio_dev *indio_dev, |
353 | struct iio_chan_spec const *ch, int *val, | |
354 | int *val2, long mask) | |
355 | { | |
356 | int err; | |
a1dcf429 | 357 | struct st_sensor_data *press_data = iio_priv(indio_dev); |
217494e5 DC |
358 | |
359 | switch (mask) { | |
360 | case IIO_CHAN_INFO_RAW: | |
361 | err = st_sensors_read_info_raw(indio_dev, ch, val); | |
362 | if (err < 0) | |
363 | goto read_error; | |
364 | ||
365 | return IIO_VAL_INT; | |
366 | case IIO_CHAN_INFO_SCALE: | |
367 | *val = 0; | |
368 | ||
369 | switch (ch->type) { | |
370 | case IIO_PRESSURE: | |
a1dcf429 | 371 | *val2 = press_data->current_fullscale->gain; |
217494e5 DC |
372 | break; |
373 | case IIO_TEMP: | |
a1dcf429 | 374 | *val2 = press_data->current_fullscale->gain2; |
217494e5 DC |
375 | break; |
376 | default: | |
377 | err = -EINVAL; | |
378 | goto read_error; | |
379 | } | |
380 | ||
381 | return IIO_VAL_INT_PLUS_NANO; | |
382 | case IIO_CHAN_INFO_OFFSET: | |
383 | switch (ch->type) { | |
384 | case IIO_TEMP: | |
385 | *val = 425; | |
386 | *val2 = 10; | |
387 | break; | |
388 | default: | |
389 | err = -EINVAL; | |
390 | goto read_error; | |
391 | } | |
392 | ||
393 | return IIO_VAL_FRACTIONAL; | |
2d239c9e | 394 | case IIO_CHAN_INFO_SAMP_FREQ: |
a1dcf429 | 395 | *val = press_data->odr; |
2d239c9e | 396 | return IIO_VAL_INT; |
217494e5 DC |
397 | default: |
398 | return -EINVAL; | |
399 | } | |
400 | ||
401 | read_error: | |
402 | return err; | |
403 | } | |
404 | ||
217494e5 DC |
405 | static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL(); |
406 | ||
407 | static struct attribute *st_press_attributes[] = { | |
408 | &iio_dev_attr_sampling_frequency_available.dev_attr.attr, | |
217494e5 DC |
409 | NULL, |
410 | }; | |
411 | ||
412 | static const struct attribute_group st_press_attribute_group = { | |
413 | .attrs = st_press_attributes, | |
414 | }; | |
415 | ||
416 | static const struct iio_info press_info = { | |
417 | .driver_module = THIS_MODULE, | |
418 | .attrs = &st_press_attribute_group, | |
419 | .read_raw = &st_press_read_raw, | |
2d239c9e | 420 | .write_raw = &st_press_write_raw, |
a0175b9c | 421 | .debugfs_reg_access = &st_sensors_debugfs_reg_access, |
217494e5 DC |
422 | }; |
423 | ||
424 | #ifdef CONFIG_IIO_TRIGGER | |
425 | static const struct iio_trigger_ops st_press_trigger_ops = { | |
426 | .owner = THIS_MODULE, | |
427 | .set_trigger_state = ST_PRESS_TRIGGER_SET_STATE, | |
428 | }; | |
429 | #define ST_PRESS_TRIGGER_OPS (&st_press_trigger_ops) | |
430 | #else | |
431 | #define ST_PRESS_TRIGGER_OPS NULL | |
432 | #endif | |
433 | ||
0baa3fc1 | 434 | int st_press_common_probe(struct iio_dev *indio_dev) |
217494e5 | 435 | { |
a1dcf429 DC |
436 | struct st_sensor_data *press_data = iio_priv(indio_dev); |
437 | int irq = press_data->get_irq_data_ready(indio_dev); | |
a6cc5b25 | 438 | int err; |
217494e5 DC |
439 | |
440 | indio_dev->modes = INDIO_DIRECT_MODE; | |
441 | indio_dev->info = &press_info; | |
8e71c04f | 442 | mutex_init(&press_data->tb.buf_lock); |
217494e5 | 443 | |
ea7e586b | 444 | st_sensors_power_enable(indio_dev); |
77448761 | 445 | |
217494e5 | 446 | err = st_sensors_check_device_support(indio_dev, |
a7ee8839 DC |
447 | ARRAY_SIZE(st_press_sensors_settings), |
448 | st_press_sensors_settings); | |
217494e5 | 449 | if (err < 0) |
a6cc5b25 | 450 | return err; |
217494e5 | 451 | |
a1dcf429 DC |
452 | press_data->num_data_channels = ST_PRESS_NUMBER_DATA_CHANNELS; |
453 | press_data->multiread_bit = press_data->sensor_settings->multi_read_bit; | |
454 | indio_dev->channels = press_data->sensor_settings->ch; | |
455 | indio_dev->num_channels = press_data->sensor_settings->num_ch; | |
217494e5 | 456 | |
a1dcf429 DC |
457 | if (press_data->sensor_settings->fs.addr != 0) |
458 | press_data->current_fullscale = | |
459 | (struct st_sensor_fullscale_avl *) | |
460 | &press_data->sensor_settings->fs.fs_avl[0]; | |
362f2f86 | 461 | |
a1dcf429 | 462 | press_data->odr = press_data->sensor_settings->odr.odr_avl[0].hz; |
217494e5 | 463 | |
38d1c6a9 | 464 | /* Some devices don't support a data ready pin. */ |
a1dcf429 DC |
465 | if (!press_data->dev->platform_data && |
466 | press_data->sensor_settings->drdy_irq.addr) | |
467 | press_data->dev->platform_data = | |
23cde4d6 DC |
468 | (struct st_sensors_platform_data *)&default_press_pdata; |
469 | ||
a1dcf429 | 470 | err = st_sensors_init_sensor(indio_dev, press_data->dev->platform_data); |
217494e5 | 471 | if (err < 0) |
a6cc5b25 | 472 | return err; |
217494e5 | 473 | |
7a137c9c DC |
474 | err = st_press_allocate_ring(indio_dev); |
475 | if (err < 0) | |
476 | return err; | |
217494e5 | 477 | |
7a137c9c | 478 | if (irq > 0) { |
217494e5 | 479 | err = st_sensors_allocate_trigger(indio_dev, |
a6cc5b25 | 480 | ST_PRESS_TRIGGER_OPS); |
217494e5 DC |
481 | if (err < 0) |
482 | goto st_press_probe_trigger_error; | |
483 | } | |
484 | ||
485 | err = iio_device_register(indio_dev); | |
486 | if (err) | |
487 | goto st_press_device_register_error; | |
488 | ||
4f544ced LW |
489 | dev_info(&indio_dev->dev, "registered pressure sensor %s\n", |
490 | indio_dev->name); | |
491 | ||
217494e5 DC |
492 | return err; |
493 | ||
494 | st_press_device_register_error: | |
a6cc5b25 | 495 | if (irq > 0) |
217494e5 DC |
496 | st_sensors_deallocate_trigger(indio_dev); |
497 | st_press_probe_trigger_error: | |
7a137c9c | 498 | st_press_deallocate_ring(indio_dev); |
a6cc5b25 | 499 | |
217494e5 DC |
500 | return err; |
501 | } | |
502 | EXPORT_SYMBOL(st_press_common_probe); | |
503 | ||
504 | void st_press_common_remove(struct iio_dev *indio_dev) | |
505 | { | |
a1dcf429 | 506 | struct st_sensor_data *press_data = iio_priv(indio_dev); |
217494e5 | 507 | |
ea7e586b | 508 | st_sensors_power_disable(indio_dev); |
77448761 | 509 | |
217494e5 | 510 | iio_device_unregister(indio_dev); |
a1dcf429 | 511 | if (press_data->get_irq_data_ready(indio_dev) > 0) |
217494e5 | 512 | st_sensors_deallocate_trigger(indio_dev); |
7a137c9c DC |
513 | |
514 | st_press_deallocate_ring(indio_dev); | |
217494e5 DC |
515 | } |
516 | EXPORT_SYMBOL(st_press_common_remove); | |
517 | ||
518 | MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); | |
519 | MODULE_DESCRIPTION("STMicroelectronics pressures driver"); | |
520 | MODULE_LICENSE("GPL v2"); |