1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * KXCJK-1013 3-axis accelerometer driver |
4 | * Copyright (c) 2014, Intel Corporation. |
5 | */ |
6 | |
7 | #include <linux/module.h> |
8 | #include <linux/i2c.h> |
9 | #include <linux/interrupt.h> |
10 | #include <linux/delay.h> |
11 | #include <linux/bitops.h> |
12 | #include <linux/slab.h> |
13 | #include <linux/string.h> |
14 | #include <linux/acpi.h> |
15 | #include <linux/pm.h> |
16 | #include <linux/pm_runtime.h> |
17 | #include <linux/regulator/consumer.h> |
18 | #include <linux/iio/iio.h> |
19 | #include <linux/iio/sysfs.h> |
20 | #include <linux/iio/buffer.h> |
21 | #include <linux/iio/trigger.h> |
22 | #include <linux/iio/events.h> |
23 | #include <linux/iio/trigger_consumer.h> |
24 | #include <linux/iio/triggered_buffer.h> |
25 | #include <linux/iio/accel/kxcjk_1013.h> |
26 | |
27 | #define KXCJK1013_DRV_NAME "kxcjk1013" |
28 | #define KXCJK1013_IRQ_NAME "kxcjk1013_event" |
29 | |
30 | #define KXTF9_REG_HP_XOUT_L 0x00 |
31 | #define KXTF9_REG_HP_XOUT_H 0x01 |
32 | #define KXTF9_REG_HP_YOUT_L 0x02 |
33 | #define KXTF9_REG_HP_YOUT_H 0x03 |
34 | #define KXTF9_REG_HP_ZOUT_L 0x04 |
35 | #define KXTF9_REG_HP_ZOUT_H 0x05 |
36 | |
37 | #define KXCJK1013_REG_XOUT_L 0x06 |
38 | /* |
39 | * From low byte X axis register, all the other addresses of Y and Z can be |
40 | * obtained by just applying axis offset. The following axis defines are just |
41 | * provide clarity, but not used. |
42 | */ |
43 | #define KXCJK1013_REG_XOUT_H 0x07 |
44 | #define KXCJK1013_REG_YOUT_L 0x08 |
45 | #define KXCJK1013_REG_YOUT_H 0x09 |
46 | #define KXCJK1013_REG_ZOUT_L 0x0A |
47 | #define KXCJK1013_REG_ZOUT_H 0x0B |
48 | |
49 | #define KXCJK1013_REG_DCST_RESP 0x0C |
50 | #define KXCJK1013_REG_WHO_AM_I 0x0F |
51 | #define KXTF9_REG_TILT_POS_CUR 0x10 |
52 | #define KXTF9_REG_TILT_POS_PREV 0x11 |
53 | #define KXTF9_REG_INT_SRC1 0x15 |
54 | #define KXTF9_REG_INT_SRC2 0x16 |
55 | #define KXCJK1013_REG_INT_SRC1 0x16 |
56 | #define KXCJK1013_REG_INT_SRC2 0x17 |
57 | #define KXCJK1013_REG_STATUS_REG 0x18 |
58 | #define KXCJK1013_REG_INT_REL 0x1A |
59 | #define KXCJK1013_REG_CTRL1 0x1B |
60 | #define KXTF9_REG_CTRL2 0x1C |
61 | #define KXTF9_REG_CTRL3 0x1D |
62 | #define KXCJK1013_REG_CTRL2 0x1D |
63 | #define KXCJK1013_REG_INT_CTRL1 0x1E |
64 | #define KXCJK1013_REG_INT_CTRL2 0x1F |
65 | #define KXTF9_REG_INT_CTRL3 0x20 |
66 | #define KXCJK1013_REG_DATA_CTRL 0x21 |
67 | #define KXTF9_REG_TILT_TIMER 0x28 |
68 | #define KXCJK1013_REG_WAKE_TIMER 0x29 |
69 | #define KXTF9_REG_TDT_TIMER 0x2B |
70 | #define KXTF9_REG_TDT_THRESH_H 0x2C |
71 | #define KXTF9_REG_TDT_THRESH_L 0x2D |
72 | #define KXTF9_REG_TDT_TAP_TIMER 0x2E |
73 | #define KXTF9_REG_TDT_TOTAL_TIMER 0x2F |
74 | #define KXTF9_REG_TDT_LATENCY_TIMER 0x30 |
75 | #define KXTF9_REG_TDT_WINDOW_TIMER 0x31 |
76 | #define KXCJK1013_REG_SELF_TEST 0x3A |
77 | #define KXTF9_REG_WAKE_THRESH 0x5A |
78 | #define KXTF9_REG_TILT_ANGLE 0x5C |
79 | #define KXTF9_REG_HYST_SET 0x5F |
80 | #define KXCJK1013_REG_WAKE_THRES 0x6A |
81 | |
82 | /* Everything up to 0x11 is equal to KXCJK1013/KXTF9 above */ |
83 | #define KX023_REG_INS1 0x12 |
84 | #define KX023_REG_INS2 0x13 |
85 | #define KX023_REG_INS3 0x14 |
86 | #define KX023_REG_STAT 0x15 |
87 | #define KX023_REG_INT_REL 0x17 |
88 | #define KX023_REG_CNTL1 0x18 |
89 | #define KX023_REG_CNTL2 0x19 |
90 | #define KX023_REG_CNTL3 0x1A |
91 | #define KX023_REG_ODCNTL 0x1B |
92 | #define KX023_REG_INC1 0x1C |
93 | #define KX023_REG_INC2 0x1D |
94 | #define KX023_REG_INC3 0x1E |
95 | #define KX023_REG_INC4 0x1F |
96 | #define KX023_REG_INC5 0x20 |
97 | #define KX023_REG_INC6 0x21 |
98 | #define KX023_REG_TILT_TIMER 0x22 |
99 | #define KX023_REG_WUFC 0x23 |
100 | #define KX023_REG_TDTRC 0x24 |
101 | #define KX023_REG_TDTC 0x25 |
102 | #define KX023_REG_TTH 0x26 |
103 | #define KX023_REG_TTL 0x27 |
104 | #define KX023_REG_FTD 0x28 |
105 | #define KX023_REG_STD 0x29 |
106 | #define KX023_REG_TLT 0x2A |
107 | #define KX023_REG_TWS 0x2B |
108 | #define KX023_REG_ATH 0x30 |
109 | #define KX023_REG_TILT_ANGLE_LL 0x32 |
110 | #define KX023_REG_TILT_ANGLE_HL 0x33 |
111 | #define KX023_REG_HYST_SET 0x34 |
112 | #define KX023_REG_LP_CNTL 0x35 |
113 | #define KX023_REG_BUF_CNTL1 0x3A |
114 | #define KX023_REG_BUF_CNTL2 0x3B |
115 | #define KX023_REG_BUF_STATUS_1 0x3C |
116 | #define KX023_REG_BUF_STATUS_2 0x3D |
117 | #define KX023_REG_BUF_CLEAR 0x3E |
118 | #define KX023_REG_BUF_READ 0x3F |
119 | #define KX023_REG_SELF_TEST 0x60 |
120 | |
121 | #define KXCJK1013_REG_CTRL1_BIT_PC1 BIT(7) |
122 | #define KXCJK1013_REG_CTRL1_BIT_RES BIT(6) |
123 | #define KXCJK1013_REG_CTRL1_BIT_DRDY BIT(5) |
124 | #define KXCJK1013_REG_CTRL1_BIT_GSEL1 BIT(4) |
125 | #define KXCJK1013_REG_CTRL1_BIT_GSEL0 BIT(3) |
126 | #define KXCJK1013_REG_CTRL1_BIT_WUFE BIT(1) |
127 | |
128 | #define KXCJK1013_REG_INT_CTRL1_BIT_IEU BIT(2) /* KXTF9 */ |
129 | #define KXCJK1013_REG_INT_CTRL1_BIT_IEL BIT(3) |
130 | #define KXCJK1013_REG_INT_CTRL1_BIT_IEA BIT(4) |
131 | #define KXCJK1013_REG_INT_CTRL1_BIT_IEN BIT(5) |
132 | |
133 | #define KXTF9_REG_TILT_BIT_LEFT_EDGE BIT(5) |
134 | #define KXTF9_REG_TILT_BIT_RIGHT_EDGE BIT(4) |
135 | #define KXTF9_REG_TILT_BIT_LOWER_EDGE BIT(3) |
136 | #define KXTF9_REG_TILT_BIT_UPPER_EDGE BIT(2) |
137 | #define KXTF9_REG_TILT_BIT_FACE_DOWN BIT(1) |
138 | #define KXTF9_REG_TILT_BIT_FACE_UP BIT(0) |
139 | |
140 | #define KXCJK1013_DATA_MASK_12_BIT 0x0FFF |
141 | #define KXCJK1013_MAX_STARTUP_TIME_US 100000 |
142 | |
143 | #define KXCJK1013_SLEEP_DELAY_MS 2000 |
144 | |
145 | #define KXCJK1013_REG_INT_SRC1_BIT_TPS BIT(0) /* KXTF9 */ |
146 | #define KXCJK1013_REG_INT_SRC1_BIT_WUFS BIT(1) |
147 | #define KXCJK1013_REG_INT_SRC1_MASK_TDTS (BIT(2) | BIT(3)) /* KXTF9 */ |
148 | #define KXCJK1013_REG_INT_SRC1_TAP_NONE 0 |
149 | #define KXCJK1013_REG_INT_SRC1_TAP_SINGLE BIT(2) |
150 | #define KXCJK1013_REG_INT_SRC1_TAP_DOUBLE BIT(3) |
151 | #define KXCJK1013_REG_INT_SRC1_BIT_DRDY BIT(4) |
152 | |
153 | /* KXCJK: INT_SOURCE2: motion detect, KXTF9: INT_SRC_REG1: tap detect */ |
154 | #define KXCJK1013_REG_INT_SRC2_BIT_ZP BIT(0) |
155 | #define KXCJK1013_REG_INT_SRC2_BIT_ZN BIT(1) |
156 | #define KXCJK1013_REG_INT_SRC2_BIT_YP BIT(2) |
157 | #define KXCJK1013_REG_INT_SRC2_BIT_YN BIT(3) |
158 | #define KXCJK1013_REG_INT_SRC2_BIT_XP BIT(4) |
159 | #define KXCJK1013_REG_INT_SRC2_BIT_XN BIT(5) |
160 | |
161 | /* KX023 interrupt routing to INT1. INT2 can be configured with INC6 */ |
162 | #define KX023_REG_INC4_BFI1 BIT(6) |
163 | #define KX023_REG_INC4_WMI1 BIT(5) |
164 | #define KX023_REG_INC4_DRDY1 BIT(4) |
165 | #define KX023_REG_INC4_TDTI1 BIT(2) |
166 | #define KX023_REG_INC4_WUFI1 BIT(1) |
167 | #define KX023_REG_INC4_TPI1 BIT(0) |
168 | |
169 | #define KXCJK1013_DEFAULT_WAKE_THRES 1 |
170 | |
171 | enum kx_chipset { |
172 | KXCJK1013, |
173 | KXCJ91008, |
174 | KXTJ21009, |
175 | KXTF9, |
176 | KX0231025, |
177 | KX_MAX_CHIPS /* this must be last */ |
178 | }; |
179 | |
180 | enum kx_acpi_type { |
181 | ACPI_GENERIC, |
182 | ACPI_SMO8500, |
183 | ACPI_KIOX010A, |
184 | }; |
185 | |
186 | struct kx_chipset_regs { |
187 | u8 int_src1; |
188 | u8 int_src2; |
189 | u8 int_rel; |
190 | u8 ctrl1; |
191 | u8 wuf_ctrl; |
192 | u8 int_ctrl1; |
193 | u8 data_ctrl; |
194 | u8 wake_timer; |
195 | u8 wake_thres; |
196 | }; |
197 | |
198 | static const struct kx_chipset_regs kxcjk1013_regs = { |
199 | .int_src1 = KXCJK1013_REG_INT_SRC1, |
200 | .int_src2 = KXCJK1013_REG_INT_SRC2, |
201 | .int_rel = KXCJK1013_REG_INT_REL, |
202 | .ctrl1 = KXCJK1013_REG_CTRL1, |
203 | .wuf_ctrl = KXCJK1013_REG_CTRL2, |
204 | .int_ctrl1 = KXCJK1013_REG_INT_CTRL1, |
205 | .data_ctrl = KXCJK1013_REG_DATA_CTRL, |
206 | .wake_timer = KXCJK1013_REG_WAKE_TIMER, |
207 | .wake_thres = KXCJK1013_REG_WAKE_THRES, |
208 | }; |
209 | |
210 | static const struct kx_chipset_regs kxtf9_regs = { |
211 | /* .int_src1 was moved to INT_SRC2 on KXTF9 */ |
212 | .int_src1 = KXTF9_REG_INT_SRC2, |
213 | /* .int_src2 is not available */ |
214 | .int_rel = KXCJK1013_REG_INT_REL, |
215 | .ctrl1 = KXCJK1013_REG_CTRL1, |
216 | .wuf_ctrl = KXTF9_REG_CTRL3, |
217 | .int_ctrl1 = KXCJK1013_REG_INT_CTRL1, |
218 | .data_ctrl = KXCJK1013_REG_DATA_CTRL, |
219 | .wake_timer = KXCJK1013_REG_WAKE_TIMER, |
220 | .wake_thres = KXTF9_REG_WAKE_THRESH, |
221 | }; |
222 | |
223 | /* The registers have totally different names but the bits are compatible */ |
224 | static const struct kx_chipset_regs kx0231025_regs = { |
225 | .int_src1 = KX023_REG_INS2, |
226 | .int_src2 = KX023_REG_INS3, |
227 | .int_rel = KX023_REG_INT_REL, |
228 | .ctrl1 = KX023_REG_CNTL1, |
229 | .wuf_ctrl = KX023_REG_CNTL3, |
230 | .int_ctrl1 = KX023_REG_INC1, |
231 | .data_ctrl = KX023_REG_ODCNTL, |
232 | .wake_timer = KX023_REG_WUFC, |
233 | .wake_thres = KX023_REG_ATH, |
234 | }; |
235 | |
236 | enum kxcjk1013_axis { |
237 | AXIS_X, |
238 | AXIS_Y, |
239 | AXIS_Z, |
240 | AXIS_MAX |
241 | }; |
242 | |
243 | struct kxcjk1013_data { |
244 | struct i2c_client *client; |
245 | struct iio_trigger *dready_trig; |
246 | struct iio_trigger *motion_trig; |
247 | struct iio_mount_matrix orientation; |
248 | struct mutex mutex; |
249 | /* Ensure timestamp naturally aligned */ |
250 | struct { |
251 | s16 chans[AXIS_MAX]; |
252 | s64 timestamp __aligned(8); |
253 | } scan; |
254 | u8 odr_bits; |
255 | u8 range; |
256 | int wake_thres; |
257 | int wake_dur; |
258 | bool active_high_intr; |
259 | bool dready_trigger_on; |
260 | int ev_enable_state; |
261 | bool motion_trigger_on; |
262 | int64_t timestamp; |
263 | enum kx_chipset chipset; |
264 | enum kx_acpi_type acpi_type; |
265 | const struct kx_chipset_regs *regs; |
266 | }; |
267 | |
268 | enum kxcjk1013_mode { |
269 | STANDBY, |
270 | OPERATION, |
271 | }; |
272 | |
273 | enum kxcjk1013_range { |
274 | KXCJK1013_RANGE_2G, |
275 | KXCJK1013_RANGE_4G, |
276 | KXCJK1013_RANGE_8G, |
277 | }; |
278 | |
279 | struct kx_odr_map { |
280 | int val; |
281 | int val2; |
282 | int odr_bits; |
283 | int wuf_bits; |
284 | }; |
285 | |
286 | static const struct kx_odr_map samp_freq_table[] = { |
287 | { 0, 781000, 0x08, 0x00 }, |
288 | { 1, 563000, 0x09, 0x01 }, |
289 | { 3, 125000, 0x0A, 0x02 }, |
290 | { 6, 250000, 0x0B, 0x03 }, |
291 | { 12, 500000, 0x00, 0x04 }, |
292 | { 25, 0, 0x01, 0x05 }, |
293 | { 50, 0, 0x02, 0x06 }, |
294 | { 100, 0, 0x03, 0x06 }, |
295 | { 200, 0, 0x04, 0x06 }, |
296 | { 400, 0, 0x05, 0x06 }, |
297 | { 800, 0, 0x06, 0x06 }, |
298 | { 1600, 0, 0x07, 0x06 }, |
299 | }; |
300 | |
301 | static const char *const kxcjk1013_samp_freq_avail = |
302 | "0.781000 1.563000 3.125000 6.250000 12.500000 25 50 100 200 400 800 1600" ; |
303 | |
304 | static const struct kx_odr_map kxtf9_samp_freq_table[] = { |
305 | { 25, 0, 0x01, 0x00 }, |
306 | { 50, 0, 0x02, 0x01 }, |
307 | { 100, 0, 0x03, 0x01 }, |
308 | { 200, 0, 0x04, 0x01 }, |
309 | { 400, 0, 0x05, 0x01 }, |
310 | { 800, 0, 0x06, 0x01 }, |
311 | }; |
312 | |
313 | static const char *const kxtf9_samp_freq_avail = |
314 | "25 50 100 200 400 800" ; |
315 | |
316 | /* Refer to section 4 of the specification */ |
317 | static __maybe_unused const struct { |
318 | int odr_bits; |
319 | int usec; |
320 | } odr_start_up_times[KX_MAX_CHIPS][12] = { |
321 | /* KXCJK-1013 */ |
322 | { |
323 | {0x08, 100000}, |
324 | {0x09, 100000}, |
325 | {0x0A, 100000}, |
326 | {0x0B, 100000}, |
327 | {0, 80000}, |
328 | {0x01, 41000}, |
329 | {0x02, 21000}, |
330 | {0x03, 11000}, |
331 | {0x04, 6400}, |
332 | {0x05, 3900}, |
333 | {0x06, 2700}, |
334 | {0x07, 2100}, |
335 | }, |
336 | /* KXCJ9-1008 */ |
337 | { |
338 | {0x08, 100000}, |
339 | {0x09, 100000}, |
340 | {0x0A, 100000}, |
341 | {0x0B, 100000}, |
342 | {0, 80000}, |
343 | {0x01, 41000}, |
344 | {0x02, 21000}, |
345 | {0x03, 11000}, |
346 | {0x04, 6400}, |
347 | {0x05, 3900}, |
348 | {0x06, 2700}, |
349 | {0x07, 2100}, |
350 | }, |
351 | /* KXCTJ2-1009 */ |
352 | { |
353 | {0x08, 1240000}, |
354 | {0x09, 621000}, |
355 | {0x0A, 309000}, |
356 | {0x0B, 151000}, |
357 | {0, 80000}, |
358 | {0x01, 41000}, |
359 | {0x02, 21000}, |
360 | {0x03, 11000}, |
361 | {0x04, 6000}, |
362 | {0x05, 4000}, |
363 | {0x06, 3000}, |
364 | {0x07, 2000}, |
365 | }, |
366 | /* KXTF9 */ |
367 | { |
368 | {0x01, 81000}, |
369 | {0x02, 41000}, |
370 | {0x03, 21000}, |
371 | {0x04, 11000}, |
372 | {0x05, 5100}, |
373 | {0x06, 2700}, |
374 | }, |
375 | /* KX023-1025 */ |
376 | { |
377 | /* First 4 are not in datasheet, taken from KXCTJ2-1009 */ |
378 | {0x08, 1240000}, |
379 | {0x09, 621000}, |
380 | {0x0A, 309000}, |
381 | {0x0B, 151000}, |
382 | {0, 81000}, |
383 | {0x01, 40000}, |
384 | {0x02, 22000}, |
385 | {0x03, 12000}, |
386 | {0x04, 7000}, |
387 | {0x05, 4400}, |
388 | {0x06, 3000}, |
389 | {0x07, 3000}, |
390 | }, |
391 | }; |
392 | |
393 | static const struct { |
394 | u16 scale; |
395 | u8 gsel_0; |
396 | u8 gsel_1; |
397 | } KXCJK1013_scale_table[] = { {9582, 0, 0}, |
398 | {19163, 1, 0}, |
399 | {38326, 0, 1} }; |
400 | |
401 | #ifdef CONFIG_ACPI |
402 | enum kiox010a_fn_index { |
403 | KIOX010A_SET_LAPTOP_MODE = 1, |
404 | KIOX010A_SET_TABLET_MODE = 2, |
405 | }; |
406 | |
407 | static int kiox010a_dsm(struct device *dev, int fn_index) |
408 | { |
409 | acpi_handle handle = ACPI_HANDLE(dev); |
410 | guid_t kiox010a_dsm_guid; |
411 | union acpi_object *obj; |
412 | |
413 | if (!handle) |
414 | return -ENODEV; |
415 | |
416 | guid_parse(uuid: "1f339696-d475-4e26-8cad-2e9f8e6d7a91" , u: &kiox010a_dsm_guid); |
417 | |
418 | obj = acpi_evaluate_dsm(handle, guid: &kiox010a_dsm_guid, rev: 1, func: fn_index, NULL); |
419 | if (!obj) |
420 | return -EIO; |
421 | |
422 | ACPI_FREE(obj); |
423 | return 0; |
424 | } |
425 | |
426 | static const struct acpi_device_id kx_acpi_match[] = { |
427 | {"KXCJ1013" , KXCJK1013}, |
428 | {"KXCJ1008" , KXCJ91008}, |
429 | {"KXCJ9000" , KXCJ91008}, |
430 | {"KIOX0008" , KXCJ91008}, |
431 | {"KIOX0009" , KXTJ21009}, |
432 | {"KIOX000A" , KXCJ91008}, |
433 | {"KIOX010A" , KXCJ91008}, /* KXCJ91008 in the display of a yoga 2-in-1 */ |
434 | {"KIOX020A" , KXCJ91008}, /* KXCJ91008 in the base of a yoga 2-in-1 */ |
435 | {"KXTJ1009" , KXTJ21009}, |
436 | {"KXJ2109" , KXTJ21009}, |
437 | {"SMO8500" , KXCJ91008}, |
438 | { } |
439 | }; |
440 | MODULE_DEVICE_TABLE(acpi, kx_acpi_match); |
441 | |
442 | #endif |
443 | |
444 | static int kxcjk1013_set_mode(struct kxcjk1013_data *data, |
445 | enum kxcjk1013_mode mode) |
446 | { |
447 | int ret; |
448 | |
449 | ret = i2c_smbus_read_byte_data(client: data->client, command: data->regs->ctrl1); |
450 | if (ret < 0) { |
451 | dev_err(&data->client->dev, "Error reading reg_ctrl1\n" ); |
452 | return ret; |
453 | } |
454 | |
455 | if (mode == STANDBY) |
456 | ret &= ~KXCJK1013_REG_CTRL1_BIT_PC1; |
457 | else |
458 | ret |= KXCJK1013_REG_CTRL1_BIT_PC1; |
459 | |
460 | ret = i2c_smbus_write_byte_data(client: data->client, command: data->regs->ctrl1, value: ret); |
461 | if (ret < 0) { |
462 | dev_err(&data->client->dev, "Error writing reg_ctrl1\n" ); |
463 | return ret; |
464 | } |
465 | |
466 | return 0; |
467 | } |
468 | |
469 | static int kxcjk1013_get_mode(struct kxcjk1013_data *data, |
470 | enum kxcjk1013_mode *mode) |
471 | { |
472 | int ret; |
473 | |
474 | ret = i2c_smbus_read_byte_data(client: data->client, command: data->regs->ctrl1); |
475 | if (ret < 0) { |
476 | dev_err(&data->client->dev, "Error reading reg_ctrl1\n" ); |
477 | return ret; |
478 | } |
479 | |
480 | if (ret & KXCJK1013_REG_CTRL1_BIT_PC1) |
481 | *mode = OPERATION; |
482 | else |
483 | *mode = STANDBY; |
484 | |
485 | return 0; |
486 | } |
487 | |
488 | static int kxcjk1013_set_range(struct kxcjk1013_data *data, int range_index) |
489 | { |
490 | int ret; |
491 | |
492 | ret = i2c_smbus_read_byte_data(client: data->client, command: data->regs->ctrl1); |
493 | if (ret < 0) { |
494 | dev_err(&data->client->dev, "Error reading reg_ctrl1\n" ); |
495 | return ret; |
496 | } |
497 | |
498 | ret &= ~(KXCJK1013_REG_CTRL1_BIT_GSEL0 | |
499 | KXCJK1013_REG_CTRL1_BIT_GSEL1); |
500 | ret |= (KXCJK1013_scale_table[range_index].gsel_0 << 3); |
501 | ret |= (KXCJK1013_scale_table[range_index].gsel_1 << 4); |
502 | |
503 | ret = i2c_smbus_write_byte_data(client: data->client, command: data->regs->ctrl1, value: ret); |
504 | if (ret < 0) { |
505 | dev_err(&data->client->dev, "Error writing reg_ctrl1\n" ); |
506 | return ret; |
507 | } |
508 | |
509 | data->range = range_index; |
510 | |
511 | return 0; |
512 | } |
513 | |
514 | static int kxcjk1013_chip_init(struct kxcjk1013_data *data) |
515 | { |
516 | int ret; |
517 | |
518 | #ifdef CONFIG_ACPI |
519 | if (data->acpi_type == ACPI_KIOX010A) { |
520 | /* Make sure the kbd and touchpad on 2-in-1s using 2 KXCJ91008-s work */ |
521 | kiox010a_dsm(dev: &data->client->dev, fn_index: KIOX010A_SET_LAPTOP_MODE); |
522 | } |
523 | #endif |
524 | |
525 | ret = i2c_smbus_read_byte_data(client: data->client, KXCJK1013_REG_WHO_AM_I); |
526 | if (ret < 0) { |
527 | dev_err(&data->client->dev, "Error reading who_am_i\n" ); |
528 | return ret; |
529 | } |
530 | |
531 | dev_dbg(&data->client->dev, "KXCJK1013 Chip Id %x\n" , ret); |
532 | |
533 | ret = kxcjk1013_set_mode(data, mode: STANDBY); |
534 | if (ret < 0) |
535 | return ret; |
536 | |
537 | ret = i2c_smbus_read_byte_data(client: data->client, command: data->regs->ctrl1); |
538 | if (ret < 0) { |
539 | dev_err(&data->client->dev, "Error reading reg_ctrl1\n" ); |
540 | return ret; |
541 | } |
542 | |
543 | /* Set 12 bit mode */ |
544 | ret |= KXCJK1013_REG_CTRL1_BIT_RES; |
545 | |
546 | ret = i2c_smbus_write_byte_data(client: data->client, command: data->regs->ctrl1, value: ret); |
547 | if (ret < 0) { |
548 | dev_err(&data->client->dev, "Error reading reg_ctrl\n" ); |
549 | return ret; |
550 | } |
551 | |
552 | /* Setting range to 4G */ |
553 | ret = kxcjk1013_set_range(data, range_index: KXCJK1013_RANGE_4G); |
554 | if (ret < 0) |
555 | return ret; |
556 | |
557 | ret = i2c_smbus_read_byte_data(client: data->client, command: data->regs->data_ctrl); |
558 | if (ret < 0) { |
559 | dev_err(&data->client->dev, "Error reading reg_data_ctrl\n" ); |
560 | return ret; |
561 | } |
562 | |
563 | data->odr_bits = ret; |
564 | |
565 | /* Set up INT polarity */ |
566 | ret = i2c_smbus_read_byte_data(client: data->client, command: data->regs->int_ctrl1); |
567 | if (ret < 0) { |
568 | dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n" ); |
569 | return ret; |
570 | } |
571 | |
572 | if (data->active_high_intr) |
573 | ret |= KXCJK1013_REG_INT_CTRL1_BIT_IEA; |
574 | else |
575 | ret &= ~KXCJK1013_REG_INT_CTRL1_BIT_IEA; |
576 | |
577 | ret = i2c_smbus_write_byte_data(client: data->client, command: data->regs->int_ctrl1, value: ret); |
578 | if (ret < 0) { |
579 | dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n" ); |
580 | return ret; |
581 | } |
582 | |
583 | /* On KX023, route all used interrupts to INT1 for now */ |
584 | if (data->chipset == KX0231025 && data->client->irq > 0) { |
585 | ret = i2c_smbus_write_byte_data(client: data->client, KX023_REG_INC4, |
586 | KX023_REG_INC4_DRDY1 | |
587 | KX023_REG_INC4_WUFI1); |
588 | if (ret < 0) { |
589 | dev_err(&data->client->dev, "Error writing reg_inc4\n" ); |
590 | return ret; |
591 | } |
592 | } |
593 | |
594 | ret = kxcjk1013_set_mode(data, mode: OPERATION); |
595 | if (ret < 0) |
596 | return ret; |
597 | |
598 | data->wake_thres = KXCJK1013_DEFAULT_WAKE_THRES; |
599 | |
600 | return 0; |
601 | } |
602 | |
603 | #ifdef CONFIG_PM |
604 | static int kxcjk1013_get_startup_times(struct kxcjk1013_data *data) |
605 | { |
606 | int i; |
607 | int idx = data->chipset; |
608 | |
609 | for (i = 0; i < ARRAY_SIZE(odr_start_up_times[idx]); ++i) { |
610 | if (odr_start_up_times[idx][i].odr_bits == data->odr_bits) |
611 | return odr_start_up_times[idx][i].usec; |
612 | } |
613 | |
614 | return KXCJK1013_MAX_STARTUP_TIME_US; |
615 | } |
616 | #endif |
617 | |
618 | static int kxcjk1013_set_power_state(struct kxcjk1013_data *data, bool on) |
619 | { |
620 | #ifdef CONFIG_PM |
621 | int ret; |
622 | |
623 | if (on) |
624 | ret = pm_runtime_resume_and_get(dev: &data->client->dev); |
625 | else { |
626 | pm_runtime_mark_last_busy(dev: &data->client->dev); |
627 | ret = pm_runtime_put_autosuspend(dev: &data->client->dev); |
628 | } |
629 | if (ret < 0) { |
630 | dev_err(&data->client->dev, |
631 | "Failed: %s for %d\n" , __func__, on); |
632 | return ret; |
633 | } |
634 | #endif |
635 | |
636 | return 0; |
637 | } |
638 | |
639 | #ifdef CONFIG_ACPI |
640 | static bool kxj_acpi_orientation(struct device *dev, |
641 | struct iio_mount_matrix *orientation) |
642 | { |
643 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
644 | struct acpi_device *adev = ACPI_COMPANION(dev); |
645 | char *str; |
646 | union acpi_object *obj, *elements; |
647 | acpi_status status; |
648 | int i, j, val[3]; |
649 | bool ret = false; |
650 | |
651 | if (!acpi_has_method(handle: adev->handle, name: "ROTM" )) |
652 | return false; |
653 | |
654 | status = acpi_evaluate_object(object: adev->handle, pathname: "ROTM" , NULL, return_object_buffer: &buffer); |
655 | if (ACPI_FAILURE(status)) { |
656 | dev_err(dev, "Failed to get ACPI mount matrix: %d\n" , status); |
657 | return false; |
658 | } |
659 | |
660 | obj = buffer.pointer; |
661 | if (obj->type != ACPI_TYPE_PACKAGE || obj->package.count != 3) { |
662 | dev_err(dev, "Unknown ACPI mount matrix package format\n" ); |
663 | goto out_free_buffer; |
664 | } |
665 | |
666 | elements = obj->package.elements; |
667 | for (i = 0; i < 3; i++) { |
668 | if (elements[i].type != ACPI_TYPE_STRING) { |
669 | dev_err(dev, "Unknown ACPI mount matrix element format\n" ); |
670 | goto out_free_buffer; |
671 | } |
672 | |
673 | str = elements[i].string.pointer; |
674 | if (sscanf(str, "%d %d %d" , &val[0], &val[1], &val[2]) != 3) { |
675 | dev_err(dev, "Incorrect ACPI mount matrix string format\n" ); |
676 | goto out_free_buffer; |
677 | } |
678 | |
679 | for (j = 0; j < 3; j++) { |
680 | switch (val[j]) { |
681 | case -1: str = "-1" ; break; |
682 | case 0: str = "0" ; break; |
683 | case 1: str = "1" ; break; |
684 | default: |
685 | dev_err(dev, "Invalid value in ACPI mount matrix: %d\n" , val[j]); |
686 | goto out_free_buffer; |
687 | } |
688 | orientation->rotation[i * 3 + j] = str; |
689 | } |
690 | } |
691 | |
692 | ret = true; |
693 | |
694 | out_free_buffer: |
695 | kfree(objp: buffer.pointer); |
696 | return ret; |
697 | } |
698 | |
699 | static bool kxj1009_apply_acpi_orientation(struct device *dev, |
700 | struct iio_mount_matrix *orientation) |
701 | { |
702 | struct acpi_device *adev = ACPI_COMPANION(dev); |
703 | |
704 | if (adev && acpi_dev_hid_uid_match(adev, "KIOX000A" , NULL)) |
705 | return kxj_acpi_orientation(dev, orientation); |
706 | |
707 | return false; |
708 | } |
709 | #else |
710 | static bool kxj1009_apply_acpi_orientation(struct device *dev, |
711 | struct iio_mount_matrix *orientation) |
712 | { |
713 | return false; |
714 | } |
715 | #endif |
716 | |
717 | static int kxcjk1013_chip_update_thresholds(struct kxcjk1013_data *data) |
718 | { |
719 | int ret; |
720 | |
721 | ret = i2c_smbus_write_byte_data(client: data->client, command: data->regs->wake_timer, |
722 | value: data->wake_dur); |
723 | if (ret < 0) { |
724 | dev_err(&data->client->dev, |
725 | "Error writing reg_wake_timer\n" ); |
726 | return ret; |
727 | } |
728 | |
729 | ret = i2c_smbus_write_byte_data(client: data->client, command: data->regs->wake_thres, |
730 | value: data->wake_thres); |
731 | if (ret < 0) { |
732 | dev_err(&data->client->dev, "Error writing reg_wake_thres\n" ); |
733 | return ret; |
734 | } |
735 | |
736 | return 0; |
737 | } |
738 | |
739 | static int kxcjk1013_setup_any_motion_interrupt(struct kxcjk1013_data *data, |
740 | bool status) |
741 | { |
742 | int ret; |
743 | enum kxcjk1013_mode store_mode; |
744 | |
745 | ret = kxcjk1013_get_mode(data, mode: &store_mode); |
746 | if (ret < 0) |
747 | return ret; |
748 | |
749 | /* This is requirement by spec to change state to STANDBY */ |
750 | ret = kxcjk1013_set_mode(data, mode: STANDBY); |
751 | if (ret < 0) |
752 | return ret; |
753 | |
754 | ret = kxcjk1013_chip_update_thresholds(data); |
755 | if (ret < 0) |
756 | return ret; |
757 | |
758 | ret = i2c_smbus_read_byte_data(client: data->client, command: data->regs->int_ctrl1); |
759 | if (ret < 0) { |
760 | dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n" ); |
761 | return ret; |
762 | } |
763 | |
764 | if (status) |
765 | ret |= KXCJK1013_REG_INT_CTRL1_BIT_IEN; |
766 | else |
767 | ret &= ~KXCJK1013_REG_INT_CTRL1_BIT_IEN; |
768 | |
769 | ret = i2c_smbus_write_byte_data(client: data->client, command: data->regs->int_ctrl1, value: ret); |
770 | if (ret < 0) { |
771 | dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n" ); |
772 | return ret; |
773 | } |
774 | |
775 | ret = i2c_smbus_read_byte_data(client: data->client, command: data->regs->ctrl1); |
776 | if (ret < 0) { |
777 | dev_err(&data->client->dev, "Error reading reg_ctrl1\n" ); |
778 | return ret; |
779 | } |
780 | |
781 | if (status) |
782 | ret |= KXCJK1013_REG_CTRL1_BIT_WUFE; |
783 | else |
784 | ret &= ~KXCJK1013_REG_CTRL1_BIT_WUFE; |
785 | |
786 | ret = i2c_smbus_write_byte_data(client: data->client, command: data->regs->ctrl1, value: ret); |
787 | if (ret < 0) { |
788 | dev_err(&data->client->dev, "Error writing reg_ctrl1\n" ); |
789 | return ret; |
790 | } |
791 | |
792 | if (store_mode == OPERATION) { |
793 | ret = kxcjk1013_set_mode(data, mode: OPERATION); |
794 | if (ret < 0) |
795 | return ret; |
796 | } |
797 | |
798 | return 0; |
799 | } |
800 | |
801 | static int kxcjk1013_setup_new_data_interrupt(struct kxcjk1013_data *data, |
802 | bool status) |
803 | { |
804 | int ret; |
805 | enum kxcjk1013_mode store_mode; |
806 | |
807 | ret = kxcjk1013_get_mode(data, mode: &store_mode); |
808 | if (ret < 0) |
809 | return ret; |
810 | |
811 | /* This is requirement by spec to change state to STANDBY */ |
812 | ret = kxcjk1013_set_mode(data, mode: STANDBY); |
813 | if (ret < 0) |
814 | return ret; |
815 | |
816 | ret = i2c_smbus_read_byte_data(client: data->client, command: data->regs->int_ctrl1); |
817 | if (ret < 0) { |
818 | dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n" ); |
819 | return ret; |
820 | } |
821 | |
822 | if (status) |
823 | ret |= KXCJK1013_REG_INT_CTRL1_BIT_IEN; |
824 | else |
825 | ret &= ~KXCJK1013_REG_INT_CTRL1_BIT_IEN; |
826 | |
827 | ret = i2c_smbus_write_byte_data(client: data->client, command: data->regs->int_ctrl1, value: ret); |
828 | if (ret < 0) { |
829 | dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n" ); |
830 | return ret; |
831 | } |
832 | |
833 | ret = i2c_smbus_read_byte_data(client: data->client, command: data->regs->ctrl1); |
834 | if (ret < 0) { |
835 | dev_err(&data->client->dev, "Error reading reg_ctrl1\n" ); |
836 | return ret; |
837 | } |
838 | |
839 | if (status) |
840 | ret |= KXCJK1013_REG_CTRL1_BIT_DRDY; |
841 | else |
842 | ret &= ~KXCJK1013_REG_CTRL1_BIT_DRDY; |
843 | |
844 | ret = i2c_smbus_write_byte_data(client: data->client, command: data->regs->ctrl1, value: ret); |
845 | if (ret < 0) { |
846 | dev_err(&data->client->dev, "Error writing reg_ctrl1\n" ); |
847 | return ret; |
848 | } |
849 | |
850 | if (store_mode == OPERATION) { |
851 | ret = kxcjk1013_set_mode(data, mode: OPERATION); |
852 | if (ret < 0) |
853 | return ret; |
854 | } |
855 | |
856 | return 0; |
857 | } |
858 | |
859 | static const struct kx_odr_map *kxcjk1013_find_odr_value( |
860 | const struct kx_odr_map *map, size_t map_size, int val, int val2) |
861 | { |
862 | int i; |
863 | |
864 | for (i = 0; i < map_size; ++i) { |
865 | if (map[i].val == val && map[i].val2 == val2) |
866 | return &map[i]; |
867 | } |
868 | |
869 | return ERR_PTR(error: -EINVAL); |
870 | } |
871 | |
872 | static int kxcjk1013_convert_odr_value(const struct kx_odr_map *map, |
873 | size_t map_size, int odr_bits, |
874 | int *val, int *val2) |
875 | { |
876 | int i; |
877 | |
878 | for (i = 0; i < map_size; ++i) { |
879 | if (map[i].odr_bits == odr_bits) { |
880 | *val = map[i].val; |
881 | *val2 = map[i].val2; |
882 | return IIO_VAL_INT_PLUS_MICRO; |
883 | } |
884 | } |
885 | |
886 | return -EINVAL; |
887 | } |
888 | |
889 | static int kxcjk1013_set_odr(struct kxcjk1013_data *data, int val, int val2) |
890 | { |
891 | int ret; |
892 | enum kxcjk1013_mode store_mode; |
893 | const struct kx_odr_map *odr_setting; |
894 | |
895 | ret = kxcjk1013_get_mode(data, mode: &store_mode); |
896 | if (ret < 0) |
897 | return ret; |
898 | |
899 | if (data->chipset == KXTF9) |
900 | odr_setting = kxcjk1013_find_odr_value(map: kxtf9_samp_freq_table, |
901 | ARRAY_SIZE(kxtf9_samp_freq_table), |
902 | val, val2); |
903 | else |
904 | odr_setting = kxcjk1013_find_odr_value(map: samp_freq_table, |
905 | ARRAY_SIZE(samp_freq_table), |
906 | val, val2); |
907 | |
908 | if (IS_ERR(ptr: odr_setting)) |
909 | return PTR_ERR(ptr: odr_setting); |
910 | |
911 | /* To change ODR, the chip must be set to STANDBY as per spec */ |
912 | ret = kxcjk1013_set_mode(data, mode: STANDBY); |
913 | if (ret < 0) |
914 | return ret; |
915 | |
916 | ret = i2c_smbus_write_byte_data(client: data->client, command: data->regs->data_ctrl, |
917 | value: odr_setting->odr_bits); |
918 | if (ret < 0) { |
919 | dev_err(&data->client->dev, "Error writing data_ctrl\n" ); |
920 | return ret; |
921 | } |
922 | |
923 | data->odr_bits = odr_setting->odr_bits; |
924 | |
925 | ret = i2c_smbus_write_byte_data(client: data->client, command: data->regs->wuf_ctrl, |
926 | value: odr_setting->wuf_bits); |
927 | if (ret < 0) { |
928 | dev_err(&data->client->dev, "Error writing reg_ctrl2\n" ); |
929 | return ret; |
930 | } |
931 | |
932 | if (store_mode == OPERATION) { |
933 | ret = kxcjk1013_set_mode(data, mode: OPERATION); |
934 | if (ret < 0) |
935 | return ret; |
936 | } |
937 | |
938 | return 0; |
939 | } |
940 | |
941 | static int kxcjk1013_get_odr(struct kxcjk1013_data *data, int *val, int *val2) |
942 | { |
943 | if (data->chipset == KXTF9) |
944 | return kxcjk1013_convert_odr_value(map: kxtf9_samp_freq_table, |
945 | ARRAY_SIZE(kxtf9_samp_freq_table), |
946 | odr_bits: data->odr_bits, val, val2); |
947 | else |
948 | return kxcjk1013_convert_odr_value(map: samp_freq_table, |
949 | ARRAY_SIZE(samp_freq_table), |
950 | odr_bits: data->odr_bits, val, val2); |
951 | } |
952 | |
953 | static int kxcjk1013_get_acc_reg(struct kxcjk1013_data *data, int axis) |
954 | { |
955 | u8 reg = KXCJK1013_REG_XOUT_L + axis * 2; |
956 | int ret; |
957 | |
958 | ret = i2c_smbus_read_word_data(client: data->client, command: reg); |
959 | if (ret < 0) { |
960 | dev_err(&data->client->dev, |
961 | "failed to read accel_%c registers\n" , 'x' + axis); |
962 | return ret; |
963 | } |
964 | |
965 | return ret; |
966 | } |
967 | |
968 | static int kxcjk1013_set_scale(struct kxcjk1013_data *data, int val) |
969 | { |
970 | int ret, i; |
971 | enum kxcjk1013_mode store_mode; |
972 | |
973 | for (i = 0; i < ARRAY_SIZE(KXCJK1013_scale_table); ++i) { |
974 | if (KXCJK1013_scale_table[i].scale == val) { |
975 | ret = kxcjk1013_get_mode(data, mode: &store_mode); |
976 | if (ret < 0) |
977 | return ret; |
978 | |
979 | ret = kxcjk1013_set_mode(data, mode: STANDBY); |
980 | if (ret < 0) |
981 | return ret; |
982 | |
983 | ret = kxcjk1013_set_range(data, range_index: i); |
984 | if (ret < 0) |
985 | return ret; |
986 | |
987 | if (store_mode == OPERATION) { |
988 | ret = kxcjk1013_set_mode(data, mode: OPERATION); |
989 | if (ret) |
990 | return ret; |
991 | } |
992 | |
993 | return 0; |
994 | } |
995 | } |
996 | |
997 | return -EINVAL; |
998 | } |
999 | |
1000 | static int kxcjk1013_read_raw(struct iio_dev *indio_dev, |
1001 | struct iio_chan_spec const *chan, int *val, |
1002 | int *val2, long mask) |
1003 | { |
1004 | struct kxcjk1013_data *data = iio_priv(indio_dev); |
1005 | int ret; |
1006 | |
1007 | switch (mask) { |
1008 | case IIO_CHAN_INFO_RAW: |
1009 | mutex_lock(&data->mutex); |
1010 | if (iio_buffer_enabled(indio_dev)) |
1011 | ret = -EBUSY; |
1012 | else { |
1013 | ret = kxcjk1013_set_power_state(data, on: true); |
1014 | if (ret < 0) { |
1015 | mutex_unlock(lock: &data->mutex); |
1016 | return ret; |
1017 | } |
1018 | ret = kxcjk1013_get_acc_reg(data, axis: chan->scan_index); |
1019 | if (ret < 0) { |
1020 | kxcjk1013_set_power_state(data, on: false); |
1021 | mutex_unlock(lock: &data->mutex); |
1022 | return ret; |
1023 | } |
1024 | *val = sign_extend32(value: ret >> chan->scan_type.shift, |
1025 | index: chan->scan_type.realbits - 1); |
1026 | ret = kxcjk1013_set_power_state(data, on: false); |
1027 | } |
1028 | mutex_unlock(lock: &data->mutex); |
1029 | |
1030 | if (ret < 0) |
1031 | return ret; |
1032 | |
1033 | return IIO_VAL_INT; |
1034 | |
1035 | case IIO_CHAN_INFO_SCALE: |
1036 | *val = 0; |
1037 | *val2 = KXCJK1013_scale_table[data->range].scale; |
1038 | return IIO_VAL_INT_PLUS_MICRO; |
1039 | |
1040 | case IIO_CHAN_INFO_SAMP_FREQ: |
1041 | mutex_lock(&data->mutex); |
1042 | ret = kxcjk1013_get_odr(data, val, val2); |
1043 | mutex_unlock(lock: &data->mutex); |
1044 | return ret; |
1045 | |
1046 | default: |
1047 | return -EINVAL; |
1048 | } |
1049 | } |
1050 | |
1051 | static int kxcjk1013_write_raw(struct iio_dev *indio_dev, |
1052 | struct iio_chan_spec const *chan, int val, |
1053 | int val2, long mask) |
1054 | { |
1055 | struct kxcjk1013_data *data = iio_priv(indio_dev); |
1056 | int ret; |
1057 | |
1058 | switch (mask) { |
1059 | case IIO_CHAN_INFO_SAMP_FREQ: |
1060 | mutex_lock(&data->mutex); |
1061 | ret = kxcjk1013_set_odr(data, val, val2); |
1062 | mutex_unlock(lock: &data->mutex); |
1063 | break; |
1064 | case IIO_CHAN_INFO_SCALE: |
1065 | if (val) |
1066 | return -EINVAL; |
1067 | |
1068 | mutex_lock(&data->mutex); |
1069 | ret = kxcjk1013_set_scale(data, val: val2); |
1070 | mutex_unlock(lock: &data->mutex); |
1071 | break; |
1072 | default: |
1073 | ret = -EINVAL; |
1074 | } |
1075 | |
1076 | return ret; |
1077 | } |
1078 | |
1079 | static int kxcjk1013_read_event(struct iio_dev *indio_dev, |
1080 | const struct iio_chan_spec *chan, |
1081 | enum iio_event_type type, |
1082 | enum iio_event_direction dir, |
1083 | enum iio_event_info info, |
1084 | int *val, int *val2) |
1085 | { |
1086 | struct kxcjk1013_data *data = iio_priv(indio_dev); |
1087 | |
1088 | *val2 = 0; |
1089 | switch (info) { |
1090 | case IIO_EV_INFO_VALUE: |
1091 | *val = data->wake_thres; |
1092 | break; |
1093 | case IIO_EV_INFO_PERIOD: |
1094 | *val = data->wake_dur; |
1095 | break; |
1096 | default: |
1097 | return -EINVAL; |
1098 | } |
1099 | |
1100 | return IIO_VAL_INT; |
1101 | } |
1102 | |
1103 | static int kxcjk1013_write_event(struct iio_dev *indio_dev, |
1104 | const struct iio_chan_spec *chan, |
1105 | enum iio_event_type type, |
1106 | enum iio_event_direction dir, |
1107 | enum iio_event_info info, |
1108 | int val, int val2) |
1109 | { |
1110 | struct kxcjk1013_data *data = iio_priv(indio_dev); |
1111 | |
1112 | if (data->ev_enable_state) |
1113 | return -EBUSY; |
1114 | |
1115 | switch (info) { |
1116 | case IIO_EV_INFO_VALUE: |
1117 | data->wake_thres = val; |
1118 | break; |
1119 | case IIO_EV_INFO_PERIOD: |
1120 | data->wake_dur = val; |
1121 | break; |
1122 | default: |
1123 | return -EINVAL; |
1124 | } |
1125 | |
1126 | return 0; |
1127 | } |
1128 | |
1129 | static int kxcjk1013_read_event_config(struct iio_dev *indio_dev, |
1130 | const struct iio_chan_spec *chan, |
1131 | enum iio_event_type type, |
1132 | enum iio_event_direction dir) |
1133 | { |
1134 | struct kxcjk1013_data *data = iio_priv(indio_dev); |
1135 | |
1136 | return data->ev_enable_state; |
1137 | } |
1138 | |
1139 | static int kxcjk1013_write_event_config(struct iio_dev *indio_dev, |
1140 | const struct iio_chan_spec *chan, |
1141 | enum iio_event_type type, |
1142 | enum iio_event_direction dir, |
1143 | int state) |
1144 | { |
1145 | struct kxcjk1013_data *data = iio_priv(indio_dev); |
1146 | int ret; |
1147 | |
1148 | if (state && data->ev_enable_state) |
1149 | return 0; |
1150 | |
1151 | mutex_lock(&data->mutex); |
1152 | |
1153 | if (!state && data->motion_trigger_on) { |
1154 | data->ev_enable_state = 0; |
1155 | mutex_unlock(lock: &data->mutex); |
1156 | return 0; |
1157 | } |
1158 | |
1159 | /* |
1160 | * We will expect the enable and disable to do operation in |
1161 | * reverse order. This will happen here anyway as our |
1162 | * resume operation uses sync mode runtime pm calls, the |
1163 | * suspend operation will be delayed by autosuspend delay |
1164 | * So the disable operation will still happen in reverse of |
1165 | * enable operation. When runtime pm is disabled the mode |
1166 | * is always on so sequence doesn't matter |
1167 | */ |
1168 | ret = kxcjk1013_set_power_state(data, on: state); |
1169 | if (ret < 0) { |
1170 | mutex_unlock(lock: &data->mutex); |
1171 | return ret; |
1172 | } |
1173 | |
1174 | ret = kxcjk1013_setup_any_motion_interrupt(data, status: state); |
1175 | if (ret < 0) { |
1176 | kxcjk1013_set_power_state(data, on: false); |
1177 | data->ev_enable_state = 0; |
1178 | mutex_unlock(lock: &data->mutex); |
1179 | return ret; |
1180 | } |
1181 | |
1182 | data->ev_enable_state = state; |
1183 | mutex_unlock(lock: &data->mutex); |
1184 | |
1185 | return 0; |
1186 | } |
1187 | |
1188 | static int kxcjk1013_buffer_preenable(struct iio_dev *indio_dev) |
1189 | { |
1190 | struct kxcjk1013_data *data = iio_priv(indio_dev); |
1191 | |
1192 | return kxcjk1013_set_power_state(data, on: true); |
1193 | } |
1194 | |
1195 | static int kxcjk1013_buffer_postdisable(struct iio_dev *indio_dev) |
1196 | { |
1197 | struct kxcjk1013_data *data = iio_priv(indio_dev); |
1198 | |
1199 | return kxcjk1013_set_power_state(data, on: false); |
1200 | } |
1201 | |
1202 | static ssize_t kxcjk1013_get_samp_freq_avail(struct device *dev, |
1203 | struct device_attribute *attr, |
1204 | char *buf) |
1205 | { |
1206 | struct iio_dev *indio_dev = dev_to_iio_dev(dev); |
1207 | struct kxcjk1013_data *data = iio_priv(indio_dev); |
1208 | const char *str; |
1209 | |
1210 | if (data->chipset == KXTF9) |
1211 | str = kxtf9_samp_freq_avail; |
1212 | else |
1213 | str = kxcjk1013_samp_freq_avail; |
1214 | |
1215 | return sprintf(buf, fmt: "%s\n" , str); |
1216 | } |
1217 | |
1218 | static IIO_DEVICE_ATTR(in_accel_sampling_frequency_available, S_IRUGO, |
1219 | kxcjk1013_get_samp_freq_avail, NULL, 0); |
1220 | |
1221 | static IIO_CONST_ATTR(in_accel_scale_available, "0.009582 0.019163 0.038326" ); |
1222 | |
1223 | static struct attribute *kxcjk1013_attributes[] = { |
1224 | &iio_dev_attr_in_accel_sampling_frequency_available.dev_attr.attr, |
1225 | &iio_const_attr_in_accel_scale_available.dev_attr.attr, |
1226 | NULL, |
1227 | }; |
1228 | |
1229 | static const struct attribute_group kxcjk1013_attrs_group = { |
1230 | .attrs = kxcjk1013_attributes, |
1231 | }; |
1232 | |
1233 | static const struct iio_event_spec kxcjk1013_event = { |
1234 | .type = IIO_EV_TYPE_THRESH, |
1235 | .dir = IIO_EV_DIR_EITHER, |
1236 | .mask_separate = BIT(IIO_EV_INFO_VALUE) | |
1237 | BIT(IIO_EV_INFO_ENABLE) | |
1238 | BIT(IIO_EV_INFO_PERIOD) |
1239 | }; |
1240 | |
1241 | static const struct iio_mount_matrix * |
1242 | kxcjk1013_get_mount_matrix(const struct iio_dev *indio_dev, |
1243 | const struct iio_chan_spec *chan) |
1244 | { |
1245 | struct kxcjk1013_data *data = iio_priv(indio_dev); |
1246 | |
1247 | return &data->orientation; |
1248 | } |
1249 | |
1250 | static const struct iio_chan_spec_ext_info kxcjk1013_ext_info[] = { |
1251 | IIO_MOUNT_MATRIX(IIO_SHARED_BY_TYPE, kxcjk1013_get_mount_matrix), |
1252 | { } |
1253 | }; |
1254 | |
1255 | #define KXCJK1013_CHANNEL(_axis) { \ |
1256 | .type = IIO_ACCEL, \ |
1257 | .modified = 1, \ |
1258 | .channel2 = IIO_MOD_##_axis, \ |
1259 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ |
1260 | .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \ |
1261 | BIT(IIO_CHAN_INFO_SAMP_FREQ), \ |
1262 | .scan_index = AXIS_##_axis, \ |
1263 | .scan_type = { \ |
1264 | .sign = 's', \ |
1265 | .realbits = 12, \ |
1266 | .storagebits = 16, \ |
1267 | .shift = 4, \ |
1268 | .endianness = IIO_LE, \ |
1269 | }, \ |
1270 | .event_spec = &kxcjk1013_event, \ |
1271 | .ext_info = kxcjk1013_ext_info, \ |
1272 | .num_event_specs = 1 \ |
1273 | } |
1274 | |
1275 | static const struct iio_chan_spec kxcjk1013_channels[] = { |
1276 | KXCJK1013_CHANNEL(X), |
1277 | KXCJK1013_CHANNEL(Y), |
1278 | KXCJK1013_CHANNEL(Z), |
1279 | IIO_CHAN_SOFT_TIMESTAMP(3), |
1280 | }; |
1281 | |
1282 | static const struct iio_buffer_setup_ops kxcjk1013_buffer_setup_ops = { |
1283 | .preenable = kxcjk1013_buffer_preenable, |
1284 | .postdisable = kxcjk1013_buffer_postdisable, |
1285 | }; |
1286 | |
1287 | static const struct iio_info kxcjk1013_info = { |
1288 | .attrs = &kxcjk1013_attrs_group, |
1289 | .read_raw = kxcjk1013_read_raw, |
1290 | .write_raw = kxcjk1013_write_raw, |
1291 | .read_event_value = kxcjk1013_read_event, |
1292 | .write_event_value = kxcjk1013_write_event, |
1293 | .write_event_config = kxcjk1013_write_event_config, |
1294 | .read_event_config = kxcjk1013_read_event_config, |
1295 | }; |
1296 | |
1297 | static const unsigned long kxcjk1013_scan_masks[] = {0x7, 0}; |
1298 | |
1299 | static irqreturn_t kxcjk1013_trigger_handler(int irq, void *p) |
1300 | { |
1301 | struct iio_poll_func *pf = p; |
1302 | struct iio_dev *indio_dev = pf->indio_dev; |
1303 | struct kxcjk1013_data *data = iio_priv(indio_dev); |
1304 | int ret; |
1305 | |
1306 | mutex_lock(&data->mutex); |
1307 | ret = i2c_smbus_read_i2c_block_data_or_emulated(client: data->client, |
1308 | KXCJK1013_REG_XOUT_L, |
1309 | length: AXIS_MAX * 2, |
1310 | values: (u8 *)data->scan.chans); |
1311 | mutex_unlock(lock: &data->mutex); |
1312 | if (ret < 0) |
1313 | goto err; |
1314 | |
1315 | iio_push_to_buffers_with_timestamp(indio_dev, data: &data->scan, |
1316 | timestamp: data->timestamp); |
1317 | err: |
1318 | iio_trigger_notify_done(trig: indio_dev->trig); |
1319 | |
1320 | return IRQ_HANDLED; |
1321 | } |
1322 | |
1323 | static void kxcjk1013_trig_reen(struct iio_trigger *trig) |
1324 | { |
1325 | struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); |
1326 | struct kxcjk1013_data *data = iio_priv(indio_dev); |
1327 | int ret; |
1328 | |
1329 | ret = i2c_smbus_read_byte_data(client: data->client, command: data->regs->int_rel); |
1330 | if (ret < 0) |
1331 | dev_err(&data->client->dev, "Error reading reg_int_rel\n" ); |
1332 | } |
1333 | |
1334 | static int kxcjk1013_data_rdy_trigger_set_state(struct iio_trigger *trig, |
1335 | bool state) |
1336 | { |
1337 | struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); |
1338 | struct kxcjk1013_data *data = iio_priv(indio_dev); |
1339 | int ret; |
1340 | |
1341 | mutex_lock(&data->mutex); |
1342 | |
1343 | if (!state && data->ev_enable_state && data->motion_trigger_on) { |
1344 | data->motion_trigger_on = false; |
1345 | mutex_unlock(lock: &data->mutex); |
1346 | return 0; |
1347 | } |
1348 | |
1349 | ret = kxcjk1013_set_power_state(data, on: state); |
1350 | if (ret < 0) { |
1351 | mutex_unlock(lock: &data->mutex); |
1352 | return ret; |
1353 | } |
1354 | if (data->motion_trig == trig) |
1355 | ret = kxcjk1013_setup_any_motion_interrupt(data, status: state); |
1356 | else |
1357 | ret = kxcjk1013_setup_new_data_interrupt(data, status: state); |
1358 | if (ret < 0) { |
1359 | kxcjk1013_set_power_state(data, on: false); |
1360 | mutex_unlock(lock: &data->mutex); |
1361 | return ret; |
1362 | } |
1363 | if (data->motion_trig == trig) |
1364 | data->motion_trigger_on = state; |
1365 | else |
1366 | data->dready_trigger_on = state; |
1367 | |
1368 | mutex_unlock(lock: &data->mutex); |
1369 | |
1370 | return 0; |
1371 | } |
1372 | |
1373 | static const struct iio_trigger_ops kxcjk1013_trigger_ops = { |
1374 | .set_trigger_state = kxcjk1013_data_rdy_trigger_set_state, |
1375 | .reenable = kxcjk1013_trig_reen, |
1376 | }; |
1377 | |
1378 | static void kxcjk1013_report_motion_event(struct iio_dev *indio_dev) |
1379 | { |
1380 | struct kxcjk1013_data *data = iio_priv(indio_dev); |
1381 | |
1382 | int ret = i2c_smbus_read_byte_data(client: data->client, command: data->regs->int_src2); |
1383 | if (ret < 0) { |
1384 | dev_err(&data->client->dev, "Error reading reg_int_src2\n" ); |
1385 | return; |
1386 | } |
1387 | |
1388 | if (ret & KXCJK1013_REG_INT_SRC2_BIT_XN) |
1389 | iio_push_event(indio_dev, |
1390 | IIO_MOD_EVENT_CODE(IIO_ACCEL, |
1391 | 0, |
1392 | IIO_MOD_X, |
1393 | IIO_EV_TYPE_THRESH, |
1394 | IIO_EV_DIR_FALLING), |
1395 | timestamp: data->timestamp); |
1396 | |
1397 | if (ret & KXCJK1013_REG_INT_SRC2_BIT_XP) |
1398 | iio_push_event(indio_dev, |
1399 | IIO_MOD_EVENT_CODE(IIO_ACCEL, |
1400 | 0, |
1401 | IIO_MOD_X, |
1402 | IIO_EV_TYPE_THRESH, |
1403 | IIO_EV_DIR_RISING), |
1404 | timestamp: data->timestamp); |
1405 | |
1406 | if (ret & KXCJK1013_REG_INT_SRC2_BIT_YN) |
1407 | iio_push_event(indio_dev, |
1408 | IIO_MOD_EVENT_CODE(IIO_ACCEL, |
1409 | 0, |
1410 | IIO_MOD_Y, |
1411 | IIO_EV_TYPE_THRESH, |
1412 | IIO_EV_DIR_FALLING), |
1413 | timestamp: data->timestamp); |
1414 | |
1415 | if (ret & KXCJK1013_REG_INT_SRC2_BIT_YP) |
1416 | iio_push_event(indio_dev, |
1417 | IIO_MOD_EVENT_CODE(IIO_ACCEL, |
1418 | 0, |
1419 | IIO_MOD_Y, |
1420 | IIO_EV_TYPE_THRESH, |
1421 | IIO_EV_DIR_RISING), |
1422 | timestamp: data->timestamp); |
1423 | |
1424 | if (ret & KXCJK1013_REG_INT_SRC2_BIT_ZN) |
1425 | iio_push_event(indio_dev, |
1426 | IIO_MOD_EVENT_CODE(IIO_ACCEL, |
1427 | 0, |
1428 | IIO_MOD_Z, |
1429 | IIO_EV_TYPE_THRESH, |
1430 | IIO_EV_DIR_FALLING), |
1431 | timestamp: data->timestamp); |
1432 | |
1433 | if (ret & KXCJK1013_REG_INT_SRC2_BIT_ZP) |
1434 | iio_push_event(indio_dev, |
1435 | IIO_MOD_EVENT_CODE(IIO_ACCEL, |
1436 | 0, |
1437 | IIO_MOD_Z, |
1438 | IIO_EV_TYPE_THRESH, |
1439 | IIO_EV_DIR_RISING), |
1440 | timestamp: data->timestamp); |
1441 | } |
1442 | |
1443 | static irqreturn_t kxcjk1013_event_handler(int irq, void *private) |
1444 | { |
1445 | struct iio_dev *indio_dev = private; |
1446 | struct kxcjk1013_data *data = iio_priv(indio_dev); |
1447 | int ret; |
1448 | |
1449 | ret = i2c_smbus_read_byte_data(client: data->client, command: data->regs->int_src1); |
1450 | if (ret < 0) { |
1451 | dev_err(&data->client->dev, "Error reading reg_int_src1\n" ); |
1452 | goto ack_intr; |
1453 | } |
1454 | |
1455 | if (ret & KXCJK1013_REG_INT_SRC1_BIT_WUFS) { |
1456 | if (data->chipset == KXTF9) |
1457 | iio_push_event(indio_dev, |
1458 | IIO_MOD_EVENT_CODE(IIO_ACCEL, |
1459 | 0, |
1460 | IIO_MOD_X_AND_Y_AND_Z, |
1461 | IIO_EV_TYPE_THRESH, |
1462 | IIO_EV_DIR_RISING), |
1463 | timestamp: data->timestamp); |
1464 | else |
1465 | kxcjk1013_report_motion_event(indio_dev); |
1466 | } |
1467 | |
1468 | ack_intr: |
1469 | if (data->dready_trigger_on) |
1470 | return IRQ_HANDLED; |
1471 | |
1472 | ret = i2c_smbus_read_byte_data(client: data->client, command: data->regs->int_rel); |
1473 | if (ret < 0) |
1474 | dev_err(&data->client->dev, "Error reading reg_int_rel\n" ); |
1475 | |
1476 | return IRQ_HANDLED; |
1477 | } |
1478 | |
1479 | static irqreturn_t kxcjk1013_data_rdy_trig_poll(int irq, void *private) |
1480 | { |
1481 | struct iio_dev *indio_dev = private; |
1482 | struct kxcjk1013_data *data = iio_priv(indio_dev); |
1483 | |
1484 | data->timestamp = iio_get_time_ns(indio_dev); |
1485 | |
1486 | if (data->dready_trigger_on) |
1487 | iio_trigger_poll(trig: data->dready_trig); |
1488 | else if (data->motion_trigger_on) |
1489 | iio_trigger_poll(trig: data->motion_trig); |
1490 | |
1491 | if (data->ev_enable_state) |
1492 | return IRQ_WAKE_THREAD; |
1493 | else |
1494 | return IRQ_HANDLED; |
1495 | } |
1496 | |
1497 | static const char *kxcjk1013_match_acpi_device(struct device *dev, |
1498 | enum kx_chipset *chipset, |
1499 | enum kx_acpi_type *acpi_type, |
1500 | const char **label) |
1501 | { |
1502 | const struct acpi_device_id *id; |
1503 | |
1504 | id = acpi_match_device(ids: dev->driver->acpi_match_table, dev); |
1505 | if (!id) |
1506 | return NULL; |
1507 | |
1508 | if (strcmp(id->id, "SMO8500" ) == 0) { |
1509 | *acpi_type = ACPI_SMO8500; |
1510 | } else if (strcmp(id->id, "KIOX010A" ) == 0) { |
1511 | *acpi_type = ACPI_KIOX010A; |
1512 | *label = "accel-display" ; |
1513 | } else if (strcmp(id->id, "KIOX020A" ) == 0) { |
1514 | *label = "accel-base" ; |
1515 | } |
1516 | |
1517 | *chipset = (enum kx_chipset)id->driver_data; |
1518 | |
1519 | return dev_name(dev); |
1520 | } |
1521 | |
1522 | static int kxcjk1013_probe(struct i2c_client *client) |
1523 | { |
1524 | const struct i2c_device_id *id = i2c_client_get_device_id(client); |
1525 | static const char * const regulator_names[] = { "vdd" , "vddio" }; |
1526 | struct kxcjk1013_data *data; |
1527 | struct iio_dev *indio_dev; |
1528 | struct kxcjk_1013_platform_data *pdata; |
1529 | const char *name; |
1530 | int ret; |
1531 | |
1532 | indio_dev = devm_iio_device_alloc(parent: &client->dev, sizeof_priv: sizeof(*data)); |
1533 | if (!indio_dev) |
1534 | return -ENOMEM; |
1535 | |
1536 | data = iio_priv(indio_dev); |
1537 | i2c_set_clientdata(client, data: indio_dev); |
1538 | data->client = client; |
1539 | |
1540 | pdata = dev_get_platdata(dev: &client->dev); |
1541 | if (pdata) { |
1542 | data->active_high_intr = pdata->active_high_intr; |
1543 | data->orientation = pdata->orientation; |
1544 | } else { |
1545 | data->active_high_intr = true; /* default polarity */ |
1546 | |
1547 | if (!kxj1009_apply_acpi_orientation(dev: &client->dev, orientation: &data->orientation)) { |
1548 | ret = iio_read_mount_matrix(dev: &client->dev, matrix: &data->orientation); |
1549 | if (ret) |
1550 | return ret; |
1551 | } |
1552 | |
1553 | } |
1554 | |
1555 | ret = devm_regulator_bulk_get_enable(dev: &client->dev, |
1556 | ARRAY_SIZE(regulator_names), |
1557 | id: regulator_names); |
1558 | if (ret) |
1559 | return dev_err_probe(dev: &client->dev, err: ret, fmt: "Failed to get regulators\n" ); |
1560 | |
1561 | /* |
1562 | * A typical delay of 10ms is required for powering up |
1563 | * according to the data sheets of supported chips. |
1564 | * Hence double that to play safe. |
1565 | */ |
1566 | msleep(msecs: 20); |
1567 | |
1568 | if (id) { |
1569 | data->chipset = (enum kx_chipset)(id->driver_data); |
1570 | name = id->name; |
1571 | } else if (ACPI_HANDLE(&client->dev)) { |
1572 | name = kxcjk1013_match_acpi_device(dev: &client->dev, |
1573 | chipset: &data->chipset, |
1574 | acpi_type: &data->acpi_type, |
1575 | label: &indio_dev->label); |
1576 | } else |
1577 | return -ENODEV; |
1578 | |
1579 | switch (data->chipset) { |
1580 | case KXCJK1013: |
1581 | case KXCJ91008: |
1582 | case KXTJ21009: |
1583 | data->regs = &kxcjk1013_regs; |
1584 | break; |
1585 | case KXTF9: |
1586 | data->regs = &kxtf9_regs; |
1587 | break; |
1588 | case KX0231025: |
1589 | data->regs = &kx0231025_regs; |
1590 | break; |
1591 | default: |
1592 | return -EINVAL; |
1593 | } |
1594 | |
1595 | ret = kxcjk1013_chip_init(data); |
1596 | if (ret < 0) |
1597 | return ret; |
1598 | |
1599 | mutex_init(&data->mutex); |
1600 | |
1601 | indio_dev->channels = kxcjk1013_channels; |
1602 | indio_dev->num_channels = ARRAY_SIZE(kxcjk1013_channels); |
1603 | indio_dev->available_scan_masks = kxcjk1013_scan_masks; |
1604 | indio_dev->name = name; |
1605 | indio_dev->modes = INDIO_DIRECT_MODE; |
1606 | indio_dev->info = &kxcjk1013_info; |
1607 | |
1608 | if (client->irq > 0 && data->acpi_type != ACPI_SMO8500) { |
1609 | ret = devm_request_threaded_irq(dev: &client->dev, irq: client->irq, |
1610 | handler: kxcjk1013_data_rdy_trig_poll, |
1611 | thread_fn: kxcjk1013_event_handler, |
1612 | IRQF_TRIGGER_RISING, |
1613 | KXCJK1013_IRQ_NAME, |
1614 | dev_id: indio_dev); |
1615 | if (ret) |
1616 | goto err_poweroff; |
1617 | |
1618 | data->dready_trig = devm_iio_trigger_alloc(&client->dev, |
1619 | "%s-dev%d" , |
1620 | indio_dev->name, |
1621 | iio_device_id(indio_dev)); |
1622 | if (!data->dready_trig) { |
1623 | ret = -ENOMEM; |
1624 | goto err_poweroff; |
1625 | } |
1626 | |
1627 | data->motion_trig = devm_iio_trigger_alloc(&client->dev, |
1628 | "%s-any-motion-dev%d" , |
1629 | indio_dev->name, |
1630 | iio_device_id(indio_dev)); |
1631 | if (!data->motion_trig) { |
1632 | ret = -ENOMEM; |
1633 | goto err_poweroff; |
1634 | } |
1635 | |
1636 | data->dready_trig->ops = &kxcjk1013_trigger_ops; |
1637 | iio_trigger_set_drvdata(trig: data->dready_trig, data: indio_dev); |
1638 | ret = iio_trigger_register(trig_info: data->dready_trig); |
1639 | if (ret) |
1640 | goto err_poweroff; |
1641 | |
1642 | indio_dev->trig = iio_trigger_get(trig: data->dready_trig); |
1643 | |
1644 | data->motion_trig->ops = &kxcjk1013_trigger_ops; |
1645 | iio_trigger_set_drvdata(trig: data->motion_trig, data: indio_dev); |
1646 | ret = iio_trigger_register(trig_info: data->motion_trig); |
1647 | if (ret) { |
1648 | data->motion_trig = NULL; |
1649 | goto err_trigger_unregister; |
1650 | } |
1651 | } |
1652 | |
1653 | ret = iio_triggered_buffer_setup(indio_dev, |
1654 | &iio_pollfunc_store_time, |
1655 | kxcjk1013_trigger_handler, |
1656 | &kxcjk1013_buffer_setup_ops); |
1657 | if (ret < 0) { |
1658 | dev_err(&client->dev, "iio triggered buffer setup failed\n" ); |
1659 | goto err_trigger_unregister; |
1660 | } |
1661 | |
1662 | ret = pm_runtime_set_active(dev: &client->dev); |
1663 | if (ret) |
1664 | goto err_buffer_cleanup; |
1665 | |
1666 | pm_runtime_enable(dev: &client->dev); |
1667 | pm_runtime_set_autosuspend_delay(dev: &client->dev, |
1668 | KXCJK1013_SLEEP_DELAY_MS); |
1669 | pm_runtime_use_autosuspend(dev: &client->dev); |
1670 | |
1671 | ret = iio_device_register(indio_dev); |
1672 | if (ret < 0) { |
1673 | dev_err(&client->dev, "unable to register iio device\n" ); |
1674 | goto err_pm_cleanup; |
1675 | } |
1676 | |
1677 | return 0; |
1678 | |
1679 | err_pm_cleanup: |
1680 | pm_runtime_dont_use_autosuspend(dev: &client->dev); |
1681 | pm_runtime_disable(dev: &client->dev); |
1682 | err_buffer_cleanup: |
1683 | iio_triggered_buffer_cleanup(indio_dev); |
1684 | err_trigger_unregister: |
1685 | if (data->dready_trig) |
1686 | iio_trigger_unregister(trig_info: data->dready_trig); |
1687 | if (data->motion_trig) |
1688 | iio_trigger_unregister(trig_info: data->motion_trig); |
1689 | err_poweroff: |
1690 | kxcjk1013_set_mode(data, mode: STANDBY); |
1691 | |
1692 | return ret; |
1693 | } |
1694 | |
1695 | static void kxcjk1013_remove(struct i2c_client *client) |
1696 | { |
1697 | struct iio_dev *indio_dev = i2c_get_clientdata(client); |
1698 | struct kxcjk1013_data *data = iio_priv(indio_dev); |
1699 | |
1700 | iio_device_unregister(indio_dev); |
1701 | |
1702 | pm_runtime_disable(dev: &client->dev); |
1703 | pm_runtime_set_suspended(dev: &client->dev); |
1704 | |
1705 | iio_triggered_buffer_cleanup(indio_dev); |
1706 | if (data->dready_trig) { |
1707 | iio_trigger_unregister(trig_info: data->dready_trig); |
1708 | iio_trigger_unregister(trig_info: data->motion_trig); |
1709 | } |
1710 | |
1711 | mutex_lock(&data->mutex); |
1712 | kxcjk1013_set_mode(data, mode: STANDBY); |
1713 | mutex_unlock(lock: &data->mutex); |
1714 | } |
1715 | |
1716 | #ifdef CONFIG_PM_SLEEP |
1717 | static int kxcjk1013_suspend(struct device *dev) |
1718 | { |
1719 | struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); |
1720 | struct kxcjk1013_data *data = iio_priv(indio_dev); |
1721 | int ret; |
1722 | |
1723 | mutex_lock(&data->mutex); |
1724 | ret = kxcjk1013_set_mode(data, mode: STANDBY); |
1725 | mutex_unlock(lock: &data->mutex); |
1726 | |
1727 | return ret; |
1728 | } |
1729 | |
1730 | static int kxcjk1013_resume(struct device *dev) |
1731 | { |
1732 | struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); |
1733 | struct kxcjk1013_data *data = iio_priv(indio_dev); |
1734 | int ret = 0; |
1735 | |
1736 | mutex_lock(&data->mutex); |
1737 | ret = kxcjk1013_set_mode(data, mode: OPERATION); |
1738 | if (ret == 0) |
1739 | ret = kxcjk1013_set_range(data, range_index: data->range); |
1740 | mutex_unlock(lock: &data->mutex); |
1741 | |
1742 | return ret; |
1743 | } |
1744 | #endif |
1745 | |
1746 | #ifdef CONFIG_PM |
1747 | static int kxcjk1013_runtime_suspend(struct device *dev) |
1748 | { |
1749 | struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); |
1750 | struct kxcjk1013_data *data = iio_priv(indio_dev); |
1751 | int ret; |
1752 | |
1753 | ret = kxcjk1013_set_mode(data, mode: STANDBY); |
1754 | if (ret < 0) { |
1755 | dev_err(&data->client->dev, "powering off device failed\n" ); |
1756 | return -EAGAIN; |
1757 | } |
1758 | return 0; |
1759 | } |
1760 | |
1761 | static int kxcjk1013_runtime_resume(struct device *dev) |
1762 | { |
1763 | struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); |
1764 | struct kxcjk1013_data *data = iio_priv(indio_dev); |
1765 | int ret; |
1766 | int sleep_val; |
1767 | |
1768 | ret = kxcjk1013_set_mode(data, mode: OPERATION); |
1769 | if (ret < 0) |
1770 | return ret; |
1771 | |
1772 | sleep_val = kxcjk1013_get_startup_times(data); |
1773 | if (sleep_val < 20000) |
1774 | usleep_range(min: sleep_val, max: 20000); |
1775 | else |
1776 | msleep_interruptible(msecs: sleep_val/1000); |
1777 | |
1778 | return 0; |
1779 | } |
1780 | #endif |
1781 | |
1782 | static const struct dev_pm_ops kxcjk1013_pm_ops = { |
1783 | SET_SYSTEM_SLEEP_PM_OPS(kxcjk1013_suspend, kxcjk1013_resume) |
1784 | SET_RUNTIME_PM_OPS(kxcjk1013_runtime_suspend, |
1785 | kxcjk1013_runtime_resume, NULL) |
1786 | }; |
1787 | |
1788 | static const struct i2c_device_id kxcjk1013_id[] = { |
1789 | {"kxcjk1013" , KXCJK1013}, |
1790 | {"kxcj91008" , KXCJ91008}, |
1791 | {"kxtj21009" , KXTJ21009}, |
1792 | {"kxtf9" , KXTF9}, |
1793 | {"kx023-1025" , KX0231025}, |
1794 | {"SMO8500" , KXCJ91008}, |
1795 | {} |
1796 | }; |
1797 | |
1798 | MODULE_DEVICE_TABLE(i2c, kxcjk1013_id); |
1799 | |
1800 | static const struct of_device_id kxcjk1013_of_match[] = { |
1801 | { .compatible = "kionix,kxcjk1013" , }, |
1802 | { .compatible = "kionix,kxcj91008" , }, |
1803 | { .compatible = "kionix,kxtj21009" , }, |
1804 | { .compatible = "kionix,kxtf9" , }, |
1805 | { .compatible = "kionix,kx023-1025" , }, |
1806 | { } |
1807 | }; |
1808 | MODULE_DEVICE_TABLE(of, kxcjk1013_of_match); |
1809 | |
1810 | static struct i2c_driver kxcjk1013_driver = { |
1811 | .driver = { |
1812 | .name = KXCJK1013_DRV_NAME, |
1813 | .acpi_match_table = ACPI_PTR(kx_acpi_match), |
1814 | .of_match_table = kxcjk1013_of_match, |
1815 | .pm = &kxcjk1013_pm_ops, |
1816 | }, |
1817 | .probe = kxcjk1013_probe, |
1818 | .remove = kxcjk1013_remove, |
1819 | .id_table = kxcjk1013_id, |
1820 | }; |
1821 | module_i2c_driver(kxcjk1013_driver); |
1822 | |
1823 | MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>" ); |
1824 | MODULE_LICENSE("GPL v2" ); |
1825 | MODULE_DESCRIPTION("KXCJK1013 accelerometer driver" ); |
1826 | |