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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
455fbdd3 PM |
2 | /* |
3 | * lis3lv02d.c - ST LIS3LV02DL accelerometer driver | |
4 | * | |
5 | * Copyright (C) 2007-2008 Yan Burman | |
6 | * Copyright (C) 2008 Eric Piel | |
ef2cfc79 | 7 | * Copyright (C) 2008-2009 Pavel Machek |
455fbdd3 PM |
8 | */ |
9 | ||
63366d37 JP |
10 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
11 | ||
455fbdd3 | 12 | #include <linux/kernel.h> |
174cd4b1 | 13 | #include <linux/sched/signal.h> |
455fbdd3 PM |
14 | #include <linux/dmi.h> |
15 | #include <linux/module.h> | |
16 | #include <linux/types.h> | |
17 | #include <linux/platform_device.h> | |
18 | #include <linux/interrupt.h> | |
dc6ea97b | 19 | #include <linux/input-polldev.h> |
455fbdd3 PM |
20 | #include <linux/delay.h> |
21 | #include <linux/wait.h> | |
22 | #include <linux/poll.h> | |
f9deb41f | 23 | #include <linux/slab.h> |
455fbdd3 | 24 | #include <linux/freezer.h> |
455fbdd3 | 25 | #include <linux/uaccess.h> |
ef2cfc79 | 26 | #include <linux/miscdevice.h> |
2a346996 | 27 | #include <linux/pm_runtime.h> |
ff606677 | 28 | #include <linux/atomic.h> |
cbac1a8b | 29 | #include <linux/of_device.h> |
455fbdd3 PM |
30 | #include "lis3lv02d.h" |
31 | ||
32 | #define DRIVER_NAME "lis3lv02d" | |
455fbdd3 PM |
33 | |
34 | /* joystick device poll interval in milliseconds */ | |
35 | #define MDPS_POLL_INTERVAL 50 | |
4a70a413 SO |
36 | #define MDPS_POLL_MIN 0 |
37 | #define MDPS_POLL_MAX 2000 | |
2a346996 SO |
38 | |
39 | #define LIS3_SYSFS_POWERDOWN_DELAY 5000 /* In milliseconds */ | |
40 | ||
029756d0 SO |
41 | #define SELFTEST_OK 0 |
42 | #define SELFTEST_FAIL -1 | |
43 | #define SELFTEST_IRQ -2 | |
44 | ||
45 | #define IRQ_LINE0 0 | |
46 | #define IRQ_LINE1 1 | |
47 | ||
455fbdd3 PM |
48 | /* |
49 | * The sensor can also generate interrupts (DRDY) but it's pretty pointless | |
bc62c147 | 50 | * because they are generated even if the data do not change. So it's better |
455fbdd3 PM |
51 | * to keep the interrupt for the free-fall event. The values are updated at |
52 | * 40Hz (at the lowest frequency), but as it can be pretty time consuming on | |
53 | * some low processor, we poll the sensor only at 20Hz... enough for the | |
54 | * joystick. | |
55 | */ | |
56 | ||
641615ab SO |
57 | #define LIS3_PWRON_DELAY_WAI_12B (5000) |
58 | #define LIS3_PWRON_DELAY_WAI_8B (3000) | |
59 | ||
32496c76 SO |
60 | /* |
61 | * LIS3LV02D spec says 1024 LSBs corresponds 1 G -> 1LSB is 1000/1024 mG | |
62 | * LIS302D spec says: 18 mG / digit | |
63 | * LIS3_ACCURACY is used to increase accuracy of the intermediate | |
64 | * calculation results. | |
65 | */ | |
66 | #define LIS3_ACCURACY 1024 | |
67 | /* Sensitivity values for -2G +2G scale */ | |
68 | #define LIS3_SENSITIVITY_12B ((LIS3_ACCURACY * 1000) / 1024) | |
69 | #define LIS3_SENSITIVITY_8B (18 * LIS3_ACCURACY) | |
70 | ||
0bf5a8be | 71 | /* |
e2b2ed83 AC |
72 | * LIS331DLH spec says 1LSBs corresponds 4G/4096 -> 1LSB is 1000/1024 mG. |
73 | * Below macros defines sensitivity values for +/-2G. Dataout bits for | |
74 | * +/-2G range is 12 bits so 4 bits adjustment must be done to get 12bit | |
75 | * data from 16bit value. Currently this driver supports only 2G range. | |
0bf5a8be AC |
76 | */ |
77 | #define LIS3DLH_SENSITIVITY_2G ((LIS3_ACCURACY * 1000) / 1024) | |
78 | #define SHIFT_ADJ_2G 4 | |
79 | ||
477bc918 SO |
80 | #define LIS3_DEFAULT_FUZZ_12B 3 |
81 | #define LIS3_DEFAULT_FLAT_12B 3 | |
82 | #define LIS3_DEFAULT_FUZZ_8B 1 | |
83 | #define LIS3_DEFAULT_FLAT_8B 1 | |
32496c76 | 84 | |
a38da2ed | 85 | struct lis3lv02d lis3_dev = { |
be84cfc5 | 86 | .misc_wait = __WAIT_QUEUE_HEAD_INITIALIZER(lis3_dev.misc_wait), |
ef2cfc79 | 87 | }; |
be84cfc5 | 88 | EXPORT_SYMBOL_GPL(lis3_dev); |
455fbdd3 | 89 | |
2ee32144 TI |
90 | /* just like param_set_int() but does sanity-check so that it won't point |
91 | * over the axis array size | |
92 | */ | |
93 | static int param_set_axis(const char *val, const struct kernel_param *kp) | |
94 | { | |
95 | int ret = param_set_int(val, kp); | |
96 | if (!ret) { | |
97 | int val = *(int *)kp->arg; | |
98 | if (val < 0) | |
99 | val = -val; | |
100 | if (!val || val > 3) | |
101 | return -EINVAL; | |
102 | } | |
103 | return ret; | |
104 | } | |
105 | ||
9c27847d | 106 | static const struct kernel_param_ops param_ops_axis = { |
2ee32144 TI |
107 | .set = param_set_axis, |
108 | .get = param_get_int, | |
109 | }; | |
110 | ||
bafeafea RR |
111 | #define param_check_axis(name, p) param_check_int(name, p) |
112 | ||
2ee32144 TI |
113 | module_param_array_named(axes, lis3_dev.ac.as_array, axis, NULL, 0644); |
114 | MODULE_PARM_DESC(axes, "Axis-mapping for x,y,z directions"); | |
115 | ||
a38da2ed DM |
116 | static s16 lis3lv02d_read_8(struct lis3lv02d *lis3, int reg) |
117 | { | |
118 | s8 lo; | |
119 | if (lis3->read(lis3, reg, &lo) < 0) | |
120 | return 0; | |
121 | ||
122 | return lo; | |
123 | } | |
124 | ||
bc62c147 | 125 | static s16 lis3lv02d_read_12(struct lis3lv02d *lis3, int reg) |
be84cfc5 PM |
126 | { |
127 | u8 lo, hi; | |
128 | ||
a38da2ed DM |
129 | lis3->read(lis3, reg - 1, &lo); |
130 | lis3->read(lis3, reg, &hi); | |
be84cfc5 PM |
131 | /* In "12 bit right justified" mode, bit 6, bit 7, bit 8 = bit 5 */ |
132 | return (s16)((hi << 8) | lo); | |
133 | } | |
134 | ||
0bf5a8be | 135 | /* 12bits for 2G range, 13 bits for 4G range and 14 bits for 8G range */ |
e2b2ed83 | 136 | static s16 lis331dlh_read_data(struct lis3lv02d *lis3, int reg) |
0bf5a8be AC |
137 | { |
138 | u8 lo, hi; | |
139 | int v; | |
140 | ||
141 | lis3->read(lis3, reg - 1, &lo); | |
142 | lis3->read(lis3, reg, &hi); | |
143 | v = (int) ((hi << 8) | lo); | |
144 | ||
145 | return (s16) v >> lis3->shift_adj; | |
146 | } | |
147 | ||
455fbdd3 PM |
148 | /** |
149 | * lis3lv02d_get_axis - For the given axis, give the value converted | |
150 | * @axis: 1,2,3 - can also be negative | |
151 | * @hw_values: raw values returned by the hardware | |
152 | * | |
153 | * Returns the converted value. | |
154 | */ | |
155 | static inline int lis3lv02d_get_axis(s8 axis, int hw_values[3]) | |
156 | { | |
157 | if (axis > 0) | |
158 | return hw_values[axis - 1]; | |
159 | else | |
160 | return -hw_values[-axis - 1]; | |
161 | } | |
162 | ||
163 | /** | |
164 | * lis3lv02d_get_xyz - Get X, Y and Z axis values from the accelerometer | |
a38da2ed DM |
165 | * @lis3: pointer to the device struct |
166 | * @x: where to store the X axis value | |
167 | * @y: where to store the Y axis value | |
168 | * @z: where to store the Z axis value | |
455fbdd3 PM |
169 | * |
170 | * Note that 40Hz input device can eat up about 10% CPU at 800MHZ | |
171 | */ | |
a38da2ed | 172 | static void lis3lv02d_get_xyz(struct lis3lv02d *lis3, int *x, int *y, int *z) |
455fbdd3 PM |
173 | { |
174 | int position[3]; | |
32496c76 | 175 | int i; |
455fbdd3 | 176 | |
f10a5407 | 177 | if (lis3->blkread) { |
895c156c | 178 | if (lis3->whoami == WAI_12B) { |
f10a5407 SO |
179 | u16 data[3]; |
180 | lis3->blkread(lis3, OUTX_L, 6, (u8 *)data); | |
181 | for (i = 0; i < 3; i++) | |
182 | position[i] = (s16)le16_to_cpu(data[i]); | |
183 | } else { | |
184 | u8 data[5]; | |
185 | /* Data: x, dummy, y, dummy, z */ | |
186 | lis3->blkread(lis3, OUTX, 5, data); | |
187 | for (i = 0; i < 3; i++) | |
188 | position[i] = (s8)data[i * 2]; | |
189 | } | |
190 | } else { | |
191 | position[0] = lis3->read_data(lis3, OUTX); | |
192 | position[1] = lis3->read_data(lis3, OUTY); | |
193 | position[2] = lis3->read_data(lis3, OUTZ); | |
194 | } | |
455fbdd3 | 195 | |
32496c76 SO |
196 | for (i = 0; i < 3; i++) |
197 | position[i] = (position[i] * lis3->scale) / LIS3_ACCURACY; | |
198 | ||
a002ee89 EP |
199 | *x = lis3lv02d_get_axis(lis3->ac.x, position); |
200 | *y = lis3lv02d_get_axis(lis3->ac.y, position); | |
201 | *z = lis3lv02d_get_axis(lis3->ac.z, position); | |
455fbdd3 PM |
202 | } |
203 | ||
641615ab SO |
204 | /* conversion btw sampling rate and the register values */ |
205 | static int lis3_12_rates[4] = {40, 160, 640, 2560}; | |
206 | static int lis3_8_rates[2] = {100, 400}; | |
78537c3b | 207 | static int lis3_3dc_rates[16] = {0, 1, 10, 25, 50, 100, 200, 400, 1600, 5000}; |
0bf5a8be | 208 | static int lis3_3dlh_rates[4] = {50, 100, 400, 1000}; |
641615ab | 209 | |
a253aaef | 210 | /* ODR is Output Data Rate */ |
895c156c | 211 | static int lis3lv02d_get_odr(struct lis3lv02d *lis3) |
641615ab SO |
212 | { |
213 | u8 ctrl; | |
a253aaef | 214 | int shift; |
641615ab | 215 | |
895c156c ÉP |
216 | lis3->read(lis3, CTRL_REG1, &ctrl); |
217 | ctrl &= lis3->odr_mask; | |
218 | shift = ffs(lis3->odr_mask) - 1; | |
219 | return lis3->odrs[(ctrl >> shift)]; | |
a253aaef | 220 | } |
641615ab | 221 | |
1510dd59 ÉP |
222 | static int lis3lv02d_get_pwron_wait(struct lis3lv02d *lis3) |
223 | { | |
895c156c | 224 | int div = lis3lv02d_get_odr(lis3); |
1510dd59 ÉP |
225 | |
226 | if (WARN_ONCE(div == 0, "device returned spurious data")) | |
227 | return -ENXIO; | |
228 | ||
229 | /* LIS3 power on delay is quite long */ | |
230 | msleep(lis3->pwron_delay / div); | |
231 | return 0; | |
232 | } | |
233 | ||
895c156c | 234 | static int lis3lv02d_set_odr(struct lis3lv02d *lis3, int rate) |
a253aaef SO |
235 | { |
236 | u8 ctrl; | |
237 | int i, len, shift; | |
238 | ||
78537c3b TI |
239 | if (!rate) |
240 | return -EINVAL; | |
241 | ||
895c156c ÉP |
242 | lis3->read(lis3, CTRL_REG1, &ctrl); |
243 | ctrl &= ~lis3->odr_mask; | |
244 | len = 1 << hweight_long(lis3->odr_mask); /* # of possible values */ | |
245 | shift = ffs(lis3->odr_mask) - 1; | |
a253aaef SO |
246 | |
247 | for (i = 0; i < len; i++) | |
895c156c ÉP |
248 | if (lis3->odrs[i] == rate) { |
249 | lis3->write(lis3, CTRL_REG1, | |
a253aaef SO |
250 | ctrl | (i << shift)); |
251 | return 0; | |
252 | } | |
253 | return -EINVAL; | |
641615ab SO |
254 | } |
255 | ||
2db4a76d SO |
256 | static int lis3lv02d_selftest(struct lis3lv02d *lis3, s16 results[3]) |
257 | { | |
78537c3b | 258 | u8 ctlreg, reg; |
2db4a76d SO |
259 | s16 x, y, z; |
260 | u8 selftest; | |
261 | int ret; | |
029756d0 SO |
262 | u8 ctrl_reg_data; |
263 | unsigned char irq_cfg; | |
2db4a76d SO |
264 | |
265 | mutex_lock(&lis3->mutex); | |
029756d0 SO |
266 | |
267 | irq_cfg = lis3->irq_cfg; | |
895c156c | 268 | if (lis3->whoami == WAI_8B) { |
029756d0 SO |
269 | lis3->data_ready_count[IRQ_LINE0] = 0; |
270 | lis3->data_ready_count[IRQ_LINE1] = 0; | |
271 | ||
272 | /* Change interrupt cfg to data ready for selftest */ | |
895c156c | 273 | atomic_inc(&lis3->wake_thread); |
029756d0 SO |
274 | lis3->irq_cfg = LIS3_IRQ1_DATA_READY | LIS3_IRQ2_DATA_READY; |
275 | lis3->read(lis3, CTRL_REG3, &ctrl_reg_data); | |
276 | lis3->write(lis3, CTRL_REG3, (ctrl_reg_data & | |
277 | ~(LIS3_IRQ1_MASK | LIS3_IRQ2_MASK)) | | |
278 | (LIS3_IRQ1_DATA_READY | LIS3_IRQ2_DATA_READY)); | |
279 | } | |
280 | ||
0bf5a8be | 281 | if ((lis3->whoami == WAI_3DC) || (lis3->whoami == WAI_3DLH)) { |
78537c3b TI |
282 | ctlreg = CTRL_REG4; |
283 | selftest = CTRL4_ST0; | |
284 | } else { | |
285 | ctlreg = CTRL_REG1; | |
895c156c | 286 | if (lis3->whoami == WAI_12B) |
78537c3b TI |
287 | selftest = CTRL1_ST; |
288 | else | |
289 | selftest = CTRL1_STP; | |
290 | } | |
2db4a76d | 291 | |
78537c3b TI |
292 | lis3->read(lis3, ctlreg, ®); |
293 | lis3->write(lis3, ctlreg, (reg | selftest)); | |
1510dd59 ÉP |
294 | ret = lis3lv02d_get_pwron_wait(lis3); |
295 | if (ret) | |
296 | goto fail; | |
2db4a76d SO |
297 | |
298 | /* Read directly to avoid axis remap */ | |
299 | x = lis3->read_data(lis3, OUTX); | |
300 | y = lis3->read_data(lis3, OUTY); | |
301 | z = lis3->read_data(lis3, OUTZ); | |
302 | ||
303 | /* back to normal settings */ | |
78537c3b | 304 | lis3->write(lis3, ctlreg, reg); |
1510dd59 ÉP |
305 | ret = lis3lv02d_get_pwron_wait(lis3); |
306 | if (ret) | |
307 | goto fail; | |
2db4a76d SO |
308 | |
309 | results[0] = x - lis3->read_data(lis3, OUTX); | |
310 | results[1] = y - lis3->read_data(lis3, OUTY); | |
311 | results[2] = z - lis3->read_data(lis3, OUTZ); | |
312 | ||
313 | ret = 0; | |
029756d0 | 314 | |
895c156c | 315 | if (lis3->whoami == WAI_8B) { |
029756d0 | 316 | /* Restore original interrupt configuration */ |
895c156c | 317 | atomic_dec(&lis3->wake_thread); |
029756d0 SO |
318 | lis3->write(lis3, CTRL_REG3, ctrl_reg_data); |
319 | lis3->irq_cfg = irq_cfg; | |
320 | ||
321 | if ((irq_cfg & LIS3_IRQ1_MASK) && | |
322 | lis3->data_ready_count[IRQ_LINE0] < 2) { | |
323 | ret = SELFTEST_IRQ; | |
324 | goto fail; | |
325 | } | |
326 | ||
327 | if ((irq_cfg & LIS3_IRQ2_MASK) && | |
328 | lis3->data_ready_count[IRQ_LINE1] < 2) { | |
329 | ret = SELFTEST_IRQ; | |
330 | goto fail; | |
331 | } | |
332 | } | |
333 | ||
2db4a76d SO |
334 | if (lis3->pdata) { |
335 | int i; | |
336 | for (i = 0; i < 3; i++) { | |
337 | /* Check against selftest acceptance limits */ | |
338 | if ((results[i] < lis3->pdata->st_min_limits[i]) || | |
339 | (results[i] > lis3->pdata->st_max_limits[i])) { | |
029756d0 | 340 | ret = SELFTEST_FAIL; |
2db4a76d SO |
341 | goto fail; |
342 | } | |
343 | } | |
344 | } | |
345 | ||
346 | /* test passed */ | |
347 | fail: | |
348 | mutex_unlock(&lis3->mutex); | |
349 | return ret; | |
350 | } | |
351 | ||
f9deb41f SO |
352 | /* |
353 | * Order of registers in the list affects to order of the restore process. | |
354 | * Perhaps it is a good idea to set interrupt enable register as a last one | |
355 | * after all other configurations | |
356 | */ | |
357 | static u8 lis3_wai8_regs[] = { FF_WU_CFG_1, FF_WU_THS_1, FF_WU_DURATION_1, | |
358 | FF_WU_CFG_2, FF_WU_THS_2, FF_WU_DURATION_2, | |
359 | CLICK_CFG, CLICK_SRC, CLICK_THSY_X, CLICK_THSZ, | |
360 | CLICK_TIMELIMIT, CLICK_LATENCY, CLICK_WINDOW, | |
361 | CTRL_REG1, CTRL_REG2, CTRL_REG3}; | |
362 | ||
363 | static u8 lis3_wai12_regs[] = {FF_WU_CFG, FF_WU_THS_L, FF_WU_THS_H, | |
364 | FF_WU_DURATION, DD_CFG, DD_THSI_L, DD_THSI_H, | |
365 | DD_THSE_L, DD_THSE_H, | |
366 | CTRL_REG1, CTRL_REG3, CTRL_REG2}; | |
367 | ||
368 | static inline void lis3_context_save(struct lis3lv02d *lis3) | |
369 | { | |
370 | int i; | |
371 | for (i = 0; i < lis3->regs_size; i++) | |
372 | lis3->read(lis3, lis3->regs[i], &lis3->reg_cache[i]); | |
373 | lis3->regs_stored = true; | |
374 | } | |
375 | ||
376 | static inline void lis3_context_restore(struct lis3lv02d *lis3) | |
377 | { | |
378 | int i; | |
379 | if (lis3->regs_stored) | |
380 | for (i = 0; i < lis3->regs_size; i++) | |
381 | lis3->write(lis3, lis3->regs[i], lis3->reg_cache[i]); | |
382 | } | |
383 | ||
a38da2ed | 384 | void lis3lv02d_poweroff(struct lis3lv02d *lis3) |
455fbdd3 | 385 | { |
f9deb41f SO |
386 | if (lis3->reg_ctrl) |
387 | lis3_context_save(lis3); | |
a002ee89 EP |
388 | /* disable X,Y,Z axis and power down */ |
389 | lis3->write(lis3, CTRL_REG1, 0x00); | |
f9deb41f SO |
390 | if (lis3->reg_ctrl) |
391 | lis3->reg_ctrl(lis3, LIS3_REG_OFF); | |
455fbdd3 | 392 | } |
cfce41a6 | 393 | EXPORT_SYMBOL_GPL(lis3lv02d_poweroff); |
455fbdd3 | 394 | |
1510dd59 | 395 | int lis3lv02d_poweron(struct lis3lv02d *lis3) |
455fbdd3 | 396 | { |
1510dd59 | 397 | int err; |
a002ee89 | 398 | u8 reg; |
455fbdd3 | 399 | |
a002ee89 | 400 | lis3->init(lis3); |
455fbdd3 | 401 | |
a002ee89 EP |
402 | /* |
403 | * Common configuration | |
4b5d95b3 ÉP |
404 | * BDU: (12 bits sensors only) LSB and MSB values are not updated until |
405 | * both have been read. So the value read will always be correct. | |
2a7fade7 | 406 | * Set BOOT bit to refresh factory tuning values. |
a002ee89 | 407 | */ |
05faadcf TI |
408 | if (lis3->pdata) { |
409 | lis3->read(lis3, CTRL_REG2, ®); | |
410 | if (lis3->whoami == WAI_12B) | |
411 | reg |= CTRL2_BDU | CTRL2_BOOT; | |
0bf5a8be AC |
412 | else if (lis3->whoami == WAI_3DLH) |
413 | reg |= CTRL2_BOOT_3DLH; | |
05faadcf TI |
414 | else |
415 | reg |= CTRL2_BOOT_8B; | |
416 | lis3->write(lis3, CTRL_REG2, reg); | |
0bf5a8be AC |
417 | |
418 | if (lis3->whoami == WAI_3DLH) { | |
419 | lis3->read(lis3, CTRL_REG4, ®); | |
420 | reg |= CTRL4_BDU; | |
421 | lis3->write(lis3, CTRL_REG4, reg); | |
422 | } | |
05faadcf | 423 | } |
2a7fade7 | 424 | |
1510dd59 ÉP |
425 | err = lis3lv02d_get_pwron_wait(lis3); |
426 | if (err) | |
427 | return err; | |
2a7fade7 | 428 | |
f9deb41f SO |
429 | if (lis3->reg_ctrl) |
430 | lis3_context_restore(lis3); | |
1510dd59 ÉP |
431 | |
432 | return 0; | |
455fbdd3 | 433 | } |
a002ee89 EP |
434 | EXPORT_SYMBOL_GPL(lis3lv02d_poweron); |
435 | ||
455fbdd3 | 436 | |
6d94d408 SO |
437 | static void lis3lv02d_joystick_poll(struct input_polled_dev *pidev) |
438 | { | |
895c156c | 439 | struct lis3lv02d *lis3 = pidev->private; |
6d94d408 SO |
440 | int x, y, z; |
441 | ||
895c156c ÉP |
442 | mutex_lock(&lis3->mutex); |
443 | lis3lv02d_get_xyz(lis3, &x, &y, &z); | |
6d94d408 SO |
444 | input_report_abs(pidev->input, ABS_X, x); |
445 | input_report_abs(pidev->input, ABS_Y, y); | |
446 | input_report_abs(pidev->input, ABS_Z, z); | |
447 | input_sync(pidev->input); | |
895c156c | 448 | mutex_unlock(&lis3->mutex); |
6d94d408 SO |
449 | } |
450 | ||
2a346996 SO |
451 | static void lis3lv02d_joystick_open(struct input_polled_dev *pidev) |
452 | { | |
895c156c | 453 | struct lis3lv02d *lis3 = pidev->private; |
e726111f | 454 | |
895c156c ÉP |
455 | if (lis3->pm_dev) |
456 | pm_runtime_get_sync(lis3->pm_dev); | |
457 | ||
458 | if (lis3->pdata && lis3->whoami == WAI_8B && lis3->idev) | |
459 | atomic_set(&lis3->wake_thread, 1); | |
821f6646 SO |
460 | /* |
461 | * Update coordinates for the case where poll interval is 0 and | |
462 | * the chip in running purely under interrupt control | |
463 | */ | |
464 | lis3lv02d_joystick_poll(pidev); | |
2a346996 SO |
465 | } |
466 | ||
467 | static void lis3lv02d_joystick_close(struct input_polled_dev *pidev) | |
468 | { | |
895c156c ÉP |
469 | struct lis3lv02d *lis3 = pidev->private; |
470 | ||
471 | atomic_set(&lis3->wake_thread, 0); | |
472 | if (lis3->pm_dev) | |
473 | pm_runtime_put(lis3->pm_dev); | |
2a346996 SO |
474 | } |
475 | ||
895c156c | 476 | static irqreturn_t lis302dl_interrupt(int irq, void *data) |
ef2cfc79 | 477 | { |
895c156c ÉP |
478 | struct lis3lv02d *lis3 = data; |
479 | ||
480 | if (!test_bit(0, &lis3->misc_opened)) | |
92ba4fe4 SO |
481 | goto out; |
482 | ||
ef2cfc79 PM |
483 | /* |
484 | * Be careful: on some HP laptops the bios force DD when on battery and | |
485 | * the lid is closed. This leads to interrupts as soon as a little move | |
486 | * is done. | |
487 | */ | |
895c156c | 488 | atomic_inc(&lis3->count); |
ef2cfc79 | 489 | |
895c156c ÉP |
490 | wake_up_interruptible(&lis3->misc_wait); |
491 | kill_fasync(&lis3->async_queue, SIGIO, POLL_IN); | |
92ba4fe4 | 492 | out: |
895c156c | 493 | if (atomic_read(&lis3->wake_thread)) |
92ba4fe4 | 494 | return IRQ_WAKE_THREAD; |
ef2cfc79 PM |
495 | return IRQ_HANDLED; |
496 | } | |
497 | ||
6d94d408 SO |
498 | static void lis302dl_interrupt_handle_click(struct lis3lv02d *lis3) |
499 | { | |
500 | struct input_dev *dev = lis3->idev->input; | |
501 | u8 click_src; | |
502 | ||
503 | mutex_lock(&lis3->mutex); | |
504 | lis3->read(lis3, CLICK_SRC, &click_src); | |
505 | ||
506 | if (click_src & CLICK_SINGLE_X) { | |
507 | input_report_key(dev, lis3->mapped_btns[0], 1); | |
508 | input_report_key(dev, lis3->mapped_btns[0], 0); | |
509 | } | |
510 | ||
511 | if (click_src & CLICK_SINGLE_Y) { | |
512 | input_report_key(dev, lis3->mapped_btns[1], 1); | |
513 | input_report_key(dev, lis3->mapped_btns[1], 0); | |
514 | } | |
515 | ||
516 | if (click_src & CLICK_SINGLE_Z) { | |
517 | input_report_key(dev, lis3->mapped_btns[2], 1); | |
518 | input_report_key(dev, lis3->mapped_btns[2], 0); | |
519 | } | |
520 | input_sync(dev); | |
521 | mutex_unlock(&lis3->mutex); | |
522 | } | |
523 | ||
029756d0 | 524 | static inline void lis302dl_data_ready(struct lis3lv02d *lis3, int index) |
ef2cfc79 | 525 | { |
029756d0 SO |
526 | int dummy; |
527 | ||
528 | /* Dummy read to ack interrupt */ | |
529 | lis3lv02d_get_xyz(lis3, &dummy, &dummy, &dummy); | |
530 | lis3->data_ready_count[index]++; | |
531 | } | |
6d94d408 | 532 | |
029756d0 SO |
533 | static irqreturn_t lis302dl_interrupt_thread1_8b(int irq, void *data) |
534 | { | |
6d94d408 | 535 | struct lis3lv02d *lis3 = data; |
029756d0 | 536 | u8 irq_cfg = lis3->irq_cfg & LIS3_IRQ1_MASK; |
6d94d408 | 537 | |
029756d0 | 538 | if (irq_cfg == LIS3_IRQ1_CLICK) |
6d94d408 | 539 | lis302dl_interrupt_handle_click(lis3); |
029756d0 SO |
540 | else if (unlikely(irq_cfg == LIS3_IRQ1_DATA_READY)) |
541 | lis302dl_data_ready(lis3, IRQ_LINE0); | |
6d94d408 | 542 | else |
e726111f | 543 | lis3lv02d_joystick_poll(lis3->idev); |
6d94d408 | 544 | |
92ba4fe4 SO |
545 | return IRQ_HANDLED; |
546 | } | |
ef2cfc79 | 547 | |
92ba4fe4 SO |
548 | static irqreturn_t lis302dl_interrupt_thread2_8b(int irq, void *data) |
549 | { | |
6d94d408 | 550 | struct lis3lv02d *lis3 = data; |
029756d0 | 551 | u8 irq_cfg = lis3->irq_cfg & LIS3_IRQ2_MASK; |
6d94d408 | 552 | |
029756d0 | 553 | if (irq_cfg == LIS3_IRQ2_CLICK) |
6d94d408 | 554 | lis302dl_interrupt_handle_click(lis3); |
029756d0 SO |
555 | else if (unlikely(irq_cfg == LIS3_IRQ2_DATA_READY)) |
556 | lis302dl_data_ready(lis3, IRQ_LINE1); | |
6d94d408 | 557 | else |
e726111f | 558 | lis3lv02d_joystick_poll(lis3->idev); |
6d94d408 | 559 | |
92ba4fe4 SO |
560 | return IRQ_HANDLED; |
561 | } | |
562 | ||
563 | static int lis3lv02d_misc_open(struct inode *inode, struct file *file) | |
564 | { | |
895c156c ÉP |
565 | struct lis3lv02d *lis3 = container_of(file->private_data, |
566 | struct lis3lv02d, miscdev); | |
567 | ||
568 | if (test_and_set_bit(0, &lis3->misc_opened)) | |
ef2cfc79 PM |
569 | return -EBUSY; /* already open */ |
570 | ||
895c156c ÉP |
571 | if (lis3->pm_dev) |
572 | pm_runtime_get_sync(lis3->pm_dev); | |
2a346996 | 573 | |
895c156c | 574 | atomic_set(&lis3->count, 0); |
ef2cfc79 PM |
575 | return 0; |
576 | } | |
577 | ||
578 | static int lis3lv02d_misc_release(struct inode *inode, struct file *file) | |
579 | { | |
895c156c ÉP |
580 | struct lis3lv02d *lis3 = container_of(file->private_data, |
581 | struct lis3lv02d, miscdev); | |
582 | ||
895c156c ÉP |
583 | clear_bit(0, &lis3->misc_opened); /* release the device */ |
584 | if (lis3->pm_dev) | |
585 | pm_runtime_put(lis3->pm_dev); | |
ef2cfc79 PM |
586 | return 0; |
587 | } | |
588 | ||
589 | static ssize_t lis3lv02d_misc_read(struct file *file, char __user *buf, | |
590 | size_t count, loff_t *pos) | |
591 | { | |
895c156c ÉP |
592 | struct lis3lv02d *lis3 = container_of(file->private_data, |
593 | struct lis3lv02d, miscdev); | |
594 | ||
ef2cfc79 PM |
595 | DECLARE_WAITQUEUE(wait, current); |
596 | u32 data; | |
597 | unsigned char byte_data; | |
598 | ssize_t retval = 1; | |
599 | ||
600 | if (count < 1) | |
601 | return -EINVAL; | |
602 | ||
895c156c | 603 | add_wait_queue(&lis3->misc_wait, &wait); |
ef2cfc79 PM |
604 | while (true) { |
605 | set_current_state(TASK_INTERRUPTIBLE); | |
895c156c | 606 | data = atomic_xchg(&lis3->count, 0); |
ef2cfc79 PM |
607 | if (data) |
608 | break; | |
609 | ||
610 | if (file->f_flags & O_NONBLOCK) { | |
611 | retval = -EAGAIN; | |
612 | goto out; | |
613 | } | |
614 | ||
615 | if (signal_pending(current)) { | |
616 | retval = -ERESTARTSYS; | |
617 | goto out; | |
618 | } | |
619 | ||
620 | schedule(); | |
621 | } | |
622 | ||
623 | if (data < 255) | |
624 | byte_data = data; | |
625 | else | |
626 | byte_data = 255; | |
627 | ||
628 | /* make sure we are not going into copy_to_user() with | |
629 | * TASK_INTERRUPTIBLE state */ | |
630 | set_current_state(TASK_RUNNING); | |
631 | if (copy_to_user(buf, &byte_data, sizeof(byte_data))) | |
632 | retval = -EFAULT; | |
633 | ||
634 | out: | |
635 | __set_current_state(TASK_RUNNING); | |
895c156c | 636 | remove_wait_queue(&lis3->misc_wait, &wait); |
ef2cfc79 PM |
637 | |
638 | return retval; | |
639 | } | |
640 | ||
afc9a42b | 641 | static __poll_t lis3lv02d_misc_poll(struct file *file, poll_table *wait) |
ef2cfc79 | 642 | { |
895c156c ÉP |
643 | struct lis3lv02d *lis3 = container_of(file->private_data, |
644 | struct lis3lv02d, miscdev); | |
645 | ||
646 | poll_wait(file, &lis3->misc_wait, wait); | |
647 | if (atomic_read(&lis3->count)) | |
a9a08845 | 648 | return EPOLLIN | EPOLLRDNORM; |
ef2cfc79 PM |
649 | return 0; |
650 | } | |
651 | ||
652 | static int lis3lv02d_misc_fasync(int fd, struct file *file, int on) | |
653 | { | |
895c156c ÉP |
654 | struct lis3lv02d *lis3 = container_of(file->private_data, |
655 | struct lis3lv02d, miscdev); | |
656 | ||
657 | return fasync_helper(fd, file, on, &lis3->async_queue); | |
ef2cfc79 PM |
658 | } |
659 | ||
660 | static const struct file_operations lis3lv02d_misc_fops = { | |
661 | .owner = THIS_MODULE, | |
662 | .llseek = no_llseek, | |
663 | .read = lis3lv02d_misc_read, | |
664 | .open = lis3lv02d_misc_open, | |
665 | .release = lis3lv02d_misc_release, | |
666 | .poll = lis3lv02d_misc_poll, | |
667 | .fasync = lis3lv02d_misc_fasync, | |
668 | }; | |
669 | ||
e1e5687d | 670 | int lis3lv02d_joystick_enable(struct lis3lv02d *lis3) |
455fbdd3 | 671 | { |
dc6ea97b | 672 | struct input_dev *input_dev; |
455fbdd3 | 673 | int err; |
32496c76 | 674 | int max_val, fuzz, flat; |
6d94d408 | 675 | int btns[] = {BTN_X, BTN_Y, BTN_Z}; |
455fbdd3 | 676 | |
895c156c | 677 | if (lis3->idev) |
455fbdd3 PM |
678 | return -EINVAL; |
679 | ||
895c156c ÉP |
680 | lis3->idev = input_allocate_polled_device(); |
681 | if (!lis3->idev) | |
455fbdd3 PM |
682 | return -ENOMEM; |
683 | ||
895c156c ÉP |
684 | lis3->idev->poll = lis3lv02d_joystick_poll; |
685 | lis3->idev->open = lis3lv02d_joystick_open; | |
686 | lis3->idev->close = lis3lv02d_joystick_close; | |
687 | lis3->idev->poll_interval = MDPS_POLL_INTERVAL; | |
688 | lis3->idev->poll_interval_min = MDPS_POLL_MIN; | |
689 | lis3->idev->poll_interval_max = MDPS_POLL_MAX; | |
690 | lis3->idev->private = lis3; | |
691 | input_dev = lis3->idev->input; | |
dc6ea97b | 692 | |
dc6ea97b EP |
693 | input_dev->name = "ST LIS3LV02DL Accelerometer"; |
694 | input_dev->phys = DRIVER_NAME "/input0"; | |
695 | input_dev->id.bustype = BUS_HOST; | |
696 | input_dev->id.vendor = 0; | |
895c156c | 697 | input_dev->dev.parent = &lis3->pdev->dev; |
455fbdd3 | 698 | |
dc6ea97b | 699 | set_bit(EV_ABS, input_dev->evbit); |
895c156c ÉP |
700 | max_val = (lis3->mdps_max_val * lis3->scale) / LIS3_ACCURACY; |
701 | if (lis3->whoami == WAI_12B) { | |
477bc918 SO |
702 | fuzz = LIS3_DEFAULT_FUZZ_12B; |
703 | flat = LIS3_DEFAULT_FLAT_12B; | |
704 | } else { | |
705 | fuzz = LIS3_DEFAULT_FUZZ_8B; | |
706 | flat = LIS3_DEFAULT_FLAT_8B; | |
707 | } | |
895c156c ÉP |
708 | fuzz = (fuzz * lis3->scale) / LIS3_ACCURACY; |
709 | flat = (flat * lis3->scale) / LIS3_ACCURACY; | |
477bc918 | 710 | |
32496c76 SO |
711 | input_set_abs_params(input_dev, ABS_X, -max_val, max_val, fuzz, flat); |
712 | input_set_abs_params(input_dev, ABS_Y, -max_val, max_val, fuzz, flat); | |
713 | input_set_abs_params(input_dev, ABS_Z, -max_val, max_val, fuzz, flat); | |
455fbdd3 | 714 | |
895c156c ÉP |
715 | lis3->mapped_btns[0] = lis3lv02d_get_axis(abs(lis3->ac.x), btns); |
716 | lis3->mapped_btns[1] = lis3lv02d_get_axis(abs(lis3->ac.y), btns); | |
717 | lis3->mapped_btns[2] = lis3lv02d_get_axis(abs(lis3->ac.z), btns); | |
6d94d408 | 718 | |
895c156c | 719 | err = input_register_polled_device(lis3->idev); |
455fbdd3 | 720 | if (err) { |
895c156c ÉP |
721 | input_free_polled_device(lis3->idev); |
722 | lis3->idev = NULL; | |
455fbdd3 PM |
723 | } |
724 | ||
725 | return err; | |
726 | } | |
cfce41a6 | 727 | EXPORT_SYMBOL_GPL(lis3lv02d_joystick_enable); |
455fbdd3 | 728 | |
e1e5687d | 729 | void lis3lv02d_joystick_disable(struct lis3lv02d *lis3) |
455fbdd3 | 730 | { |
895c156c ÉP |
731 | if (lis3->irq) |
732 | free_irq(lis3->irq, lis3); | |
733 | if (lis3->pdata && lis3->pdata->irq2) | |
734 | free_irq(lis3->pdata->irq2, lis3); | |
92ba4fe4 | 735 | |
895c156c | 736 | if (!lis3->idev) |
455fbdd3 PM |
737 | return; |
738 | ||
895c156c ÉP |
739 | if (lis3->irq) |
740 | misc_deregister(&lis3->miscdev); | |
741 | input_unregister_polled_device(lis3->idev); | |
742 | input_free_polled_device(lis3->idev); | |
743 | lis3->idev = NULL; | |
455fbdd3 | 744 | } |
cfce41a6 | 745 | EXPORT_SYMBOL_GPL(lis3lv02d_joystick_disable); |
455fbdd3 | 746 | |
455fbdd3 | 747 | /* Sysfs stuff */ |
2a346996 SO |
748 | static void lis3lv02d_sysfs_poweron(struct lis3lv02d *lis3) |
749 | { | |
750 | /* | |
751 | * SYSFS functions are fast visitors so put-call | |
752 | * immediately after the get-call. However, keep | |
753 | * chip running for a while and schedule delayed | |
754 | * suspend. This way periodic sysfs calls doesn't | |
755 | * suffer from relatively long power up time. | |
756 | */ | |
757 | ||
758 | if (lis3->pm_dev) { | |
759 | pm_runtime_get_sync(lis3->pm_dev); | |
760 | pm_runtime_put_noidle(lis3->pm_dev); | |
761 | pm_schedule_suspend(lis3->pm_dev, LIS3_SYSFS_POWERDOWN_DELAY); | |
762 | } | |
763 | } | |
764 | ||
2db4a76d SO |
765 | static ssize_t lis3lv02d_selftest_show(struct device *dev, |
766 | struct device_attribute *attr, char *buf) | |
767 | { | |
895c156c | 768 | struct lis3lv02d *lis3 = dev_get_drvdata(dev); |
2db4a76d SO |
769 | s16 values[3]; |
770 | ||
029756d0 SO |
771 | static const char ok[] = "OK"; |
772 | static const char fail[] = "FAIL"; | |
773 | static const char irq[] = "FAIL_IRQ"; | |
774 | const char *res; | |
775 | ||
895c156c ÉP |
776 | lis3lv02d_sysfs_poweron(lis3); |
777 | switch (lis3lv02d_selftest(lis3, values)) { | |
029756d0 SO |
778 | case SELFTEST_FAIL: |
779 | res = fail; | |
780 | break; | |
781 | case SELFTEST_IRQ: | |
782 | res = irq; | |
783 | break; | |
784 | case SELFTEST_OK: | |
785 | default: | |
786 | res = ok; | |
787 | break; | |
788 | } | |
789 | return sprintf(buf, "%s %d %d %d\n", res, | |
2db4a76d SO |
790 | values[0], values[1], values[2]); |
791 | } | |
792 | ||
455fbdd3 PM |
793 | static ssize_t lis3lv02d_position_show(struct device *dev, |
794 | struct device_attribute *attr, char *buf) | |
795 | { | |
895c156c | 796 | struct lis3lv02d *lis3 = dev_get_drvdata(dev); |
455fbdd3 PM |
797 | int x, y, z; |
798 | ||
895c156c ÉP |
799 | lis3lv02d_sysfs_poweron(lis3); |
800 | mutex_lock(&lis3->mutex); | |
801 | lis3lv02d_get_xyz(lis3, &x, &y, &z); | |
802 | mutex_unlock(&lis3->mutex); | |
455fbdd3 PM |
803 | return sprintf(buf, "(%d,%d,%d)\n", x, y, z); |
804 | } | |
805 | ||
455fbdd3 PM |
806 | static ssize_t lis3lv02d_rate_show(struct device *dev, |
807 | struct device_attribute *attr, char *buf) | |
808 | { | |
895c156c ÉP |
809 | struct lis3lv02d *lis3 = dev_get_drvdata(dev); |
810 | ||
811 | lis3lv02d_sysfs_poweron(lis3); | |
812 | return sprintf(buf, "%d\n", lis3lv02d_get_odr(lis3)); | |
455fbdd3 PM |
813 | } |
814 | ||
a253aaef SO |
815 | static ssize_t lis3lv02d_rate_set(struct device *dev, |
816 | struct device_attribute *attr, const char *buf, | |
817 | size_t count) | |
818 | { | |
895c156c | 819 | struct lis3lv02d *lis3 = dev_get_drvdata(dev); |
a253aaef | 820 | unsigned long rate; |
f7b41276 | 821 | int ret; |
a253aaef | 822 | |
f7b41276 JH |
823 | ret = kstrtoul(buf, 0, &rate); |
824 | if (ret) | |
825 | return ret; | |
a253aaef | 826 | |
895c156c ÉP |
827 | lis3lv02d_sysfs_poweron(lis3); |
828 | if (lis3lv02d_set_odr(lis3, rate)) | |
a253aaef SO |
829 | return -EINVAL; |
830 | ||
831 | return count; | |
832 | } | |
833 | ||
2db4a76d | 834 | static DEVICE_ATTR(selftest, S_IRUSR, lis3lv02d_selftest_show, NULL); |
455fbdd3 | 835 | static DEVICE_ATTR(position, S_IRUGO, lis3lv02d_position_show, NULL); |
a253aaef SO |
836 | static DEVICE_ATTR(rate, S_IRUGO | S_IWUSR, lis3lv02d_rate_show, |
837 | lis3lv02d_rate_set); | |
455fbdd3 PM |
838 | |
839 | static struct attribute *lis3lv02d_attributes[] = { | |
2db4a76d | 840 | &dev_attr_selftest.attr, |
455fbdd3 | 841 | &dev_attr_position.attr, |
455fbdd3 PM |
842 | &dev_attr_rate.attr, |
843 | NULL | |
844 | }; | |
845 | ||
27c0823f | 846 | static const struct attribute_group lis3lv02d_attribute_group = { |
455fbdd3 PM |
847 | .attrs = lis3lv02d_attributes |
848 | }; | |
849 | ||
cfce41a6 | 850 | |
a38da2ed | 851 | static int lis3lv02d_add_fs(struct lis3lv02d *lis3) |
455fbdd3 | 852 | { |
a002ee89 EP |
853 | lis3->pdev = platform_device_register_simple(DRIVER_NAME, -1, NULL, 0); |
854 | if (IS_ERR(lis3->pdev)) | |
855 | return PTR_ERR(lis3->pdev); | |
455fbdd3 | 856 | |
895c156c | 857 | platform_set_drvdata(lis3->pdev, lis3); |
a002ee89 | 858 | return sysfs_create_group(&lis3->pdev->dev.kobj, &lis3lv02d_attribute_group); |
455fbdd3 PM |
859 | } |
860 | ||
a002ee89 | 861 | int lis3lv02d_remove_fs(struct lis3lv02d *lis3) |
455fbdd3 | 862 | { |
a002ee89 EP |
863 | sysfs_remove_group(&lis3->pdev->dev.kobj, &lis3lv02d_attribute_group); |
864 | platform_device_unregister(lis3->pdev); | |
2a346996 SO |
865 | if (lis3->pm_dev) { |
866 | /* Barrier after the sysfs remove */ | |
867 | pm_runtime_barrier(lis3->pm_dev); | |
868 | ||
869 | /* SYSFS may have left chip running. Turn off if necessary */ | |
870 | if (!pm_runtime_suspended(lis3->pm_dev)) | |
895c156c | 871 | lis3lv02d_poweroff(lis3); |
2a346996 SO |
872 | |
873 | pm_runtime_disable(lis3->pm_dev); | |
874 | pm_runtime_set_suspended(lis3->pm_dev); | |
875 | } | |
f9deb41f | 876 | kfree(lis3->reg_cache); |
455fbdd3 PM |
877 | return 0; |
878 | } | |
cfce41a6 | 879 | EXPORT_SYMBOL_GPL(lis3lv02d_remove_fs); |
455fbdd3 | 880 | |
d7f81d42 | 881 | static void lis3lv02d_8b_configure(struct lis3lv02d *lis3, |
ecc437ae SO |
882 | struct lis3lv02d_platform_data *p) |
883 | { | |
92ba4fe4 | 884 | int err; |
342c5f12 SO |
885 | int ctrl2 = p->hipass_ctrl; |
886 | ||
ecc437ae | 887 | if (p->click_flags) { |
d7f81d42 ÉP |
888 | lis3->write(lis3, CLICK_CFG, p->click_flags); |
889 | lis3->write(lis3, CLICK_TIMELIMIT, p->click_time_limit); | |
890 | lis3->write(lis3, CLICK_LATENCY, p->click_latency); | |
891 | lis3->write(lis3, CLICK_WINDOW, p->click_window); | |
892 | lis3->write(lis3, CLICK_THSZ, p->click_thresh_z & 0xf); | |
893 | lis3->write(lis3, CLICK_THSY_X, | |
ecc437ae SO |
894 | (p->click_thresh_x & 0xf) | |
895 | (p->click_thresh_y << 4)); | |
6d94d408 | 896 | |
d7f81d42 | 897 | if (lis3->idev) { |
895c156c | 898 | struct input_dev *input_dev = lis3->idev->input; |
6d94d408 SO |
899 | input_set_capability(input_dev, EV_KEY, BTN_X); |
900 | input_set_capability(input_dev, EV_KEY, BTN_Y); | |
901 | input_set_capability(input_dev, EV_KEY, BTN_Z); | |
902 | } | |
ecc437ae SO |
903 | } |
904 | ||
905 | if (p->wakeup_flags) { | |
d7f81d42 ÉP |
906 | lis3->write(lis3, FF_WU_CFG_1, p->wakeup_flags); |
907 | lis3->write(lis3, FF_WU_THS_1, p->wakeup_thresh & 0x7f); | |
cc23aa1c | 908 | /* pdata value + 1 to keep this backward compatible*/ |
d7f81d42 | 909 | lis3->write(lis3, FF_WU_DURATION_1, p->duration1 + 1); |
342c5f12 SO |
910 | ctrl2 ^= HP_FF_WU1; /* Xor to keep compatible with old pdata*/ |
911 | } | |
912 | ||
913 | if (p->wakeup_flags2) { | |
d7f81d42 ÉP |
914 | lis3->write(lis3, FF_WU_CFG_2, p->wakeup_flags2); |
915 | lis3->write(lis3, FF_WU_THS_2, p->wakeup_thresh2 & 0x7f); | |
cc23aa1c | 916 | /* pdata value + 1 to keep this backward compatible*/ |
d7f81d42 | 917 | lis3->write(lis3, FF_WU_DURATION_2, p->duration2 + 1); |
342c5f12 | 918 | ctrl2 ^= HP_FF_WU2; /* Xor to keep compatible with old pdata*/ |
ecc437ae | 919 | } |
342c5f12 | 920 | /* Configure hipass filters */ |
d7f81d42 | 921 | lis3->write(lis3, CTRL_REG2, ctrl2); |
92ba4fe4 SO |
922 | |
923 | if (p->irq2) { | |
924 | err = request_threaded_irq(p->irq2, | |
925 | NULL, | |
926 | lis302dl_interrupt_thread2_8b, | |
cc23aa1c SO |
927 | IRQF_TRIGGER_RISING | IRQF_ONESHOT | |
928 | (p->irq_flags2 & IRQF_TRIGGER_MASK), | |
895c156c | 929 | DRIVER_NAME, lis3); |
92ba4fe4 | 930 | if (err < 0) |
63366d37 | 931 | pr_err("No second IRQ. Limited functionality\n"); |
92ba4fe4 | 932 | } |
ecc437ae SO |
933 | } |
934 | ||
cbac1a8b | 935 | #ifdef CONFIG_OF |
0c83adba | 936 | int lis3lv02d_init_dt(struct lis3lv02d *lis3) |
cbac1a8b DM |
937 | { |
938 | struct lis3lv02d_platform_data *pdata; | |
939 | struct device_node *np = lis3->of_node; | |
940 | u32 val; | |
cdcd6f82 | 941 | s32 sval; |
cbac1a8b DM |
942 | |
943 | if (!lis3->of_node) | |
944 | return 0; | |
945 | ||
946 | pdata = kzalloc(sizeof(*pdata), GFP_KERNEL); | |
947 | if (!pdata) | |
948 | return -ENOMEM; | |
949 | ||
950 | if (of_get_property(np, "st,click-single-x", NULL)) | |
951 | pdata->click_flags |= LIS3_CLICK_SINGLE_X; | |
952 | if (of_get_property(np, "st,click-double-x", NULL)) | |
953 | pdata->click_flags |= LIS3_CLICK_DOUBLE_X; | |
954 | ||
955 | if (of_get_property(np, "st,click-single-y", NULL)) | |
956 | pdata->click_flags |= LIS3_CLICK_SINGLE_Y; | |
957 | if (of_get_property(np, "st,click-double-y", NULL)) | |
958 | pdata->click_flags |= LIS3_CLICK_DOUBLE_Y; | |
959 | ||
960 | if (of_get_property(np, "st,click-single-z", NULL)) | |
961 | pdata->click_flags |= LIS3_CLICK_SINGLE_Z; | |
962 | if (of_get_property(np, "st,click-double-z", NULL)) | |
963 | pdata->click_flags |= LIS3_CLICK_DOUBLE_Z; | |
964 | ||
965 | if (!of_property_read_u32(np, "st,click-threshold-x", &val)) | |
966 | pdata->click_thresh_x = val; | |
967 | if (!of_property_read_u32(np, "st,click-threshold-y", &val)) | |
968 | pdata->click_thresh_y = val; | |
969 | if (!of_property_read_u32(np, "st,click-threshold-z", &val)) | |
970 | pdata->click_thresh_z = val; | |
971 | ||
972 | if (!of_property_read_u32(np, "st,click-time-limit", &val)) | |
973 | pdata->click_time_limit = val; | |
974 | if (!of_property_read_u32(np, "st,click-latency", &val)) | |
975 | pdata->click_latency = val; | |
976 | if (!of_property_read_u32(np, "st,click-window", &val)) | |
977 | pdata->click_window = val; | |
978 | ||
979 | if (of_get_property(np, "st,irq1-disable", NULL)) | |
980 | pdata->irq_cfg |= LIS3_IRQ1_DISABLE; | |
981 | if (of_get_property(np, "st,irq1-ff-wu-1", NULL)) | |
982 | pdata->irq_cfg |= LIS3_IRQ1_FF_WU_1; | |
983 | if (of_get_property(np, "st,irq1-ff-wu-2", NULL)) | |
984 | pdata->irq_cfg |= LIS3_IRQ1_FF_WU_2; | |
985 | if (of_get_property(np, "st,irq1-data-ready", NULL)) | |
986 | pdata->irq_cfg |= LIS3_IRQ1_DATA_READY; | |
987 | if (of_get_property(np, "st,irq1-click", NULL)) | |
988 | pdata->irq_cfg |= LIS3_IRQ1_CLICK; | |
989 | ||
990 | if (of_get_property(np, "st,irq2-disable", NULL)) | |
991 | pdata->irq_cfg |= LIS3_IRQ2_DISABLE; | |
992 | if (of_get_property(np, "st,irq2-ff-wu-1", NULL)) | |
993 | pdata->irq_cfg |= LIS3_IRQ2_FF_WU_1; | |
994 | if (of_get_property(np, "st,irq2-ff-wu-2", NULL)) | |
995 | pdata->irq_cfg |= LIS3_IRQ2_FF_WU_2; | |
996 | if (of_get_property(np, "st,irq2-data-ready", NULL)) | |
997 | pdata->irq_cfg |= LIS3_IRQ2_DATA_READY; | |
998 | if (of_get_property(np, "st,irq2-click", NULL)) | |
999 | pdata->irq_cfg |= LIS3_IRQ2_CLICK; | |
1000 | ||
1001 | if (of_get_property(np, "st,irq-open-drain", NULL)) | |
1002 | pdata->irq_cfg |= LIS3_IRQ_OPEN_DRAIN; | |
1003 | if (of_get_property(np, "st,irq-active-low", NULL)) | |
1004 | pdata->irq_cfg |= LIS3_IRQ_ACTIVE_LOW; | |
1005 | ||
1006 | if (!of_property_read_u32(np, "st,wu-duration-1", &val)) | |
1007 | pdata->duration1 = val; | |
1008 | if (!of_property_read_u32(np, "st,wu-duration-2", &val)) | |
1009 | pdata->duration2 = val; | |
1010 | ||
1011 | if (of_get_property(np, "st,wakeup-x-lo", NULL)) | |
1012 | pdata->wakeup_flags |= LIS3_WAKEUP_X_LO; | |
1013 | if (of_get_property(np, "st,wakeup-x-hi", NULL)) | |
1014 | pdata->wakeup_flags |= LIS3_WAKEUP_X_HI; | |
1015 | if (of_get_property(np, "st,wakeup-y-lo", NULL)) | |
1016 | pdata->wakeup_flags |= LIS3_WAKEUP_Y_LO; | |
1017 | if (of_get_property(np, "st,wakeup-y-hi", NULL)) | |
1018 | pdata->wakeup_flags |= LIS3_WAKEUP_Y_HI; | |
1019 | if (of_get_property(np, "st,wakeup-z-lo", NULL)) | |
1020 | pdata->wakeup_flags |= LIS3_WAKEUP_Z_LO; | |
1021 | if (of_get_property(np, "st,wakeup-z-hi", NULL)) | |
1022 | pdata->wakeup_flags |= LIS3_WAKEUP_Z_HI; | |
c5131a37 SR |
1023 | if (of_get_property(np, "st,wakeup-threshold", &val)) |
1024 | pdata->wakeup_thresh = val; | |
1025 | ||
1026 | if (of_get_property(np, "st,wakeup2-x-lo", NULL)) | |
1027 | pdata->wakeup_flags2 |= LIS3_WAKEUP_X_LO; | |
1028 | if (of_get_property(np, "st,wakeup2-x-hi", NULL)) | |
1029 | pdata->wakeup_flags2 |= LIS3_WAKEUP_X_HI; | |
1030 | if (of_get_property(np, "st,wakeup2-y-lo", NULL)) | |
1031 | pdata->wakeup_flags2 |= LIS3_WAKEUP_Y_LO; | |
1032 | if (of_get_property(np, "st,wakeup2-y-hi", NULL)) | |
1033 | pdata->wakeup_flags2 |= LIS3_WAKEUP_Y_HI; | |
1034 | if (of_get_property(np, "st,wakeup2-z-lo", NULL)) | |
1035 | pdata->wakeup_flags2 |= LIS3_WAKEUP_Z_LO; | |
1036 | if (of_get_property(np, "st,wakeup2-z-hi", NULL)) | |
1037 | pdata->wakeup_flags2 |= LIS3_WAKEUP_Z_HI; | |
1038 | if (of_get_property(np, "st,wakeup2-threshold", &val)) | |
1039 | pdata->wakeup_thresh2 = val; | |
cbac1a8b DM |
1040 | |
1041 | if (!of_property_read_u32(np, "st,highpass-cutoff-hz", &val)) { | |
1042 | switch (val) { | |
1043 | case 1: | |
1044 | pdata->hipass_ctrl = LIS3_HIPASS_CUTFF_1HZ; | |
1045 | break; | |
1046 | case 2: | |
1047 | pdata->hipass_ctrl = LIS3_HIPASS_CUTFF_2HZ; | |
1048 | break; | |
1049 | case 4: | |
1050 | pdata->hipass_ctrl = LIS3_HIPASS_CUTFF_4HZ; | |
1051 | break; | |
1052 | case 8: | |
1053 | pdata->hipass_ctrl = LIS3_HIPASS_CUTFF_8HZ; | |
1054 | break; | |
1055 | } | |
1056 | } | |
1057 | ||
1058 | if (of_get_property(np, "st,hipass1-disable", NULL)) | |
1059 | pdata->hipass_ctrl |= LIS3_HIPASS1_DISABLE; | |
1060 | if (of_get_property(np, "st,hipass2-disable", NULL)) | |
1061 | pdata->hipass_ctrl |= LIS3_HIPASS2_DISABLE; | |
1062 | ||
cdcd6f82 SR |
1063 | if (of_property_read_s32(np, "st,axis-x", &sval) == 0) |
1064 | pdata->axis_x = sval; | |
1065 | if (of_property_read_s32(np, "st,axis-y", &sval) == 0) | |
1066 | pdata->axis_y = sval; | |
1067 | if (of_property_read_s32(np, "st,axis-z", &sval) == 0) | |
1068 | pdata->axis_z = sval; | |
cbac1a8b DM |
1069 | |
1070 | if (of_get_property(np, "st,default-rate", NULL)) | |
1071 | pdata->default_rate = val; | |
1072 | ||
cdcd6f82 SR |
1073 | if (of_property_read_s32(np, "st,min-limit-x", &sval) == 0) |
1074 | pdata->st_min_limits[0] = sval; | |
1075 | if (of_property_read_s32(np, "st,min-limit-y", &sval) == 0) | |
1076 | pdata->st_min_limits[1] = sval; | |
1077 | if (of_property_read_s32(np, "st,min-limit-z", &sval) == 0) | |
1078 | pdata->st_min_limits[2] = sval; | |
1079 | ||
1080 | if (of_property_read_s32(np, "st,max-limit-x", &sval) == 0) | |
1081 | pdata->st_max_limits[0] = sval; | |
1082 | if (of_property_read_s32(np, "st,max-limit-y", &sval) == 0) | |
1083 | pdata->st_max_limits[1] = sval; | |
1084 | if (of_property_read_s32(np, "st,max-limit-z", &sval) == 0) | |
1085 | pdata->st_max_limits[2] = sval; | |
cbac1a8b DM |
1086 | |
1087 | ||
1088 | lis3->pdata = pdata; | |
1089 | ||
1090 | return 0; | |
1091 | } | |
1092 | ||
1093 | #else | |
0c83adba | 1094 | int lis3lv02d_init_dt(struct lis3lv02d *lis3) |
cbac1a8b DM |
1095 | { |
1096 | return 0; | |
1097 | } | |
1098 | #endif | |
1099 | EXPORT_SYMBOL_GPL(lis3lv02d_init_dt); | |
1100 | ||
ab337a63 DM |
1101 | /* |
1102 | * Initialise the accelerometer and the various subsystems. | |
bc62c147 | 1103 | * Should be rather independent of the bus system. |
ab337a63 | 1104 | */ |
d7f81d42 | 1105 | int lis3lv02d_init_device(struct lis3lv02d *lis3) |
ab337a63 | 1106 | { |
92ba4fe4 SO |
1107 | int err; |
1108 | irq_handler_t thread_fn; | |
cc23aa1c | 1109 | int irq_flags = 0; |
92ba4fe4 | 1110 | |
d7f81d42 | 1111 | lis3->whoami = lis3lv02d_read_8(lis3, WHO_AM_I); |
a38da2ed | 1112 | |
d7f81d42 | 1113 | switch (lis3->whoami) { |
bc62c147 | 1114 | case WAI_12B: |
63366d37 | 1115 | pr_info("12 bits sensor found\n"); |
d7f81d42 ÉP |
1116 | lis3->read_data = lis3lv02d_read_12; |
1117 | lis3->mdps_max_val = 2048; | |
1118 | lis3->pwron_delay = LIS3_PWRON_DELAY_WAI_12B; | |
1119 | lis3->odrs = lis3_12_rates; | |
1120 | lis3->odr_mask = CTRL1_DF0 | CTRL1_DF1; | |
1121 | lis3->scale = LIS3_SENSITIVITY_12B; | |
1122 | lis3->regs = lis3_wai12_regs; | |
1123 | lis3->regs_size = ARRAY_SIZE(lis3_wai12_regs); | |
a38da2ed | 1124 | break; |
bc62c147 | 1125 | case WAI_8B: |
63366d37 | 1126 | pr_info("8 bits sensor found\n"); |
d7f81d42 ÉP |
1127 | lis3->read_data = lis3lv02d_read_8; |
1128 | lis3->mdps_max_val = 128; | |
1129 | lis3->pwron_delay = LIS3_PWRON_DELAY_WAI_8B; | |
1130 | lis3->odrs = lis3_8_rates; | |
1131 | lis3->odr_mask = CTRL1_DR; | |
1132 | lis3->scale = LIS3_SENSITIVITY_8B; | |
1133 | lis3->regs = lis3_wai8_regs; | |
1134 | lis3->regs_size = ARRAY_SIZE(lis3_wai8_regs); | |
a38da2ed | 1135 | break; |
78537c3b | 1136 | case WAI_3DC: |
63366d37 | 1137 | pr_info("8 bits 3DC sensor found\n"); |
d7f81d42 ÉP |
1138 | lis3->read_data = lis3lv02d_read_8; |
1139 | lis3->mdps_max_val = 128; | |
1140 | lis3->pwron_delay = LIS3_PWRON_DELAY_WAI_8B; | |
1141 | lis3->odrs = lis3_3dc_rates; | |
1142 | lis3->odr_mask = CTRL1_ODR0|CTRL1_ODR1|CTRL1_ODR2|CTRL1_ODR3; | |
1143 | lis3->scale = LIS3_SENSITIVITY_8B; | |
78537c3b | 1144 | break; |
0bf5a8be | 1145 | case WAI_3DLH: |
e2b2ed83 AC |
1146 | pr_info("16 bits lis331dlh sensor found\n"); |
1147 | lis3->read_data = lis331dlh_read_data; | |
0bf5a8be AC |
1148 | lis3->mdps_max_val = 2048; /* 12 bits for 2G */ |
1149 | lis3->shift_adj = SHIFT_ADJ_2G; | |
1150 | lis3->pwron_delay = LIS3_PWRON_DELAY_WAI_8B; | |
1151 | lis3->odrs = lis3_3dlh_rates; | |
1152 | lis3->odr_mask = CTRL1_DR0 | CTRL1_DR1; | |
1153 | lis3->scale = LIS3DLH_SENSITIVITY_2G; | |
1154 | break; | |
a38da2ed | 1155 | default: |
d7f81d42 | 1156 | pr_err("unknown sensor type 0x%X\n", lis3->whoami); |
a38da2ed DM |
1157 | return -EINVAL; |
1158 | } | |
1159 | ||
d7f81d42 | 1160 | lis3->reg_cache = kzalloc(max(sizeof(lis3_wai8_regs), |
f9deb41f SO |
1161 | sizeof(lis3_wai12_regs)), GFP_KERNEL); |
1162 | ||
d7f81d42 | 1163 | if (lis3->reg_cache == NULL) { |
f9deb41f SO |
1164 | printk(KERN_ERR DRIVER_NAME "out of memory\n"); |
1165 | return -ENOMEM; | |
1166 | } | |
1167 | ||
d7f81d42 ÉP |
1168 | mutex_init(&lis3->mutex); |
1169 | atomic_set(&lis3->wake_thread, 0); | |
2db4a76d | 1170 | |
d7f81d42 ÉP |
1171 | lis3lv02d_add_fs(lis3); |
1172 | err = lis3lv02d_poweron(lis3); | |
1510dd59 | 1173 | if (err) { |
d7f81d42 | 1174 | lis3lv02d_remove_fs(lis3); |
1510dd59 ÉP |
1175 | return err; |
1176 | } | |
ab337a63 | 1177 | |
d7f81d42 ÉP |
1178 | if (lis3->pm_dev) { |
1179 | pm_runtime_set_active(lis3->pm_dev); | |
1180 | pm_runtime_enable(lis3->pm_dev); | |
2a346996 SO |
1181 | } |
1182 | ||
e1e5687d | 1183 | if (lis3lv02d_joystick_enable(lis3)) |
63366d37 | 1184 | pr_err("joystick initialization failed\n"); |
ab337a63 | 1185 | |
8f3128e7 DM |
1186 | /* passing in platform specific data is purely optional and only |
1187 | * used by the SPI transport layer at the moment */ | |
d7f81d42 ÉP |
1188 | if (lis3->pdata) { |
1189 | struct lis3lv02d_platform_data *p = lis3->pdata; | |
8f3128e7 | 1190 | |
d7f81d42 ÉP |
1191 | if (lis3->whoami == WAI_8B) |
1192 | lis3lv02d_8b_configure(lis3, p); | |
8873c334 | 1193 | |
cc23aa1c SO |
1194 | irq_flags = p->irq_flags1 & IRQF_TRIGGER_MASK; |
1195 | ||
d7f81d42 | 1196 | lis3->irq_cfg = p->irq_cfg; |
8f3128e7 | 1197 | if (p->irq_cfg) |
d7f81d42 | 1198 | lis3->write(lis3, CTRL_REG3, p->irq_cfg); |
cc23aa1c SO |
1199 | |
1200 | if (p->default_rate) | |
895c156c | 1201 | lis3lv02d_set_odr(lis3, p->default_rate); |
8f3128e7 DM |
1202 | } |
1203 | ||
a38da2ed | 1204 | /* bail if we did not get an IRQ from the bus layer */ |
d7f81d42 | 1205 | if (!lis3->irq) { |
a20f0bc1 | 1206 | pr_debug("No IRQ. Disabling /dev/freefall\n"); |
ab337a63 DM |
1207 | goto out; |
1208 | } | |
1209 | ||
92ba4fe4 SO |
1210 | /* |
1211 | * The sensor can generate interrupts for free-fall and direction | |
1212 | * detection (distinguishable with FF_WU_SRC and DD_SRC) but to keep | |
1213 | * the things simple and _fast_ we activate it only for free-fall, so | |
1214 | * no need to read register (very slow with ACPI). For the same reason, | |
1215 | * we forbid shared interrupts. | |
1216 | * | |
1217 | * IRQF_TRIGGER_RISING seems pointless on HP laptops because the | |
1218 | * io-apic is not configurable (and generates a warning) but I keep it | |
1219 | * in case of support for other hardware. | |
1220 | */ | |
d7f81d42 | 1221 | if (lis3->pdata && lis3->whoami == WAI_8B) |
92ba4fe4 SO |
1222 | thread_fn = lis302dl_interrupt_thread1_8b; |
1223 | else | |
1224 | thread_fn = NULL; | |
1225 | ||
d7f81d42 | 1226 | err = request_threaded_irq(lis3->irq, lis302dl_interrupt, |
92ba4fe4 | 1227 | thread_fn, |
cc23aa1c SO |
1228 | IRQF_TRIGGER_RISING | IRQF_ONESHOT | |
1229 | irq_flags, | |
895c156c | 1230 | DRIVER_NAME, lis3); |
92ba4fe4 SO |
1231 | |
1232 | if (err < 0) { | |
63366d37 | 1233 | pr_err("Cannot get IRQ\n"); |
92ba4fe4 SO |
1234 | goto out; |
1235 | } | |
1236 | ||
895c156c ÉP |
1237 | lis3->miscdev.minor = MISC_DYNAMIC_MINOR; |
1238 | lis3->miscdev.name = "freefall"; | |
1239 | lis3->miscdev.fops = &lis3lv02d_misc_fops; | |
1240 | ||
1241 | if (misc_register(&lis3->miscdev)) | |
63366d37 | 1242 | pr_err("misc_register failed\n"); |
ab337a63 | 1243 | out: |
ab337a63 DM |
1244 | return 0; |
1245 | } | |
1246 | EXPORT_SYMBOL_GPL(lis3lv02d_init_device); | |
1247 | ||
455fbdd3 | 1248 | MODULE_DESCRIPTION("ST LIS3LV02Dx three-axis digital accelerometer driver"); |
ef2cfc79 | 1249 | MODULE_AUTHOR("Yan Burman, Eric Piel, Pavel Machek"); |
455fbdd3 | 1250 | MODULE_LICENSE("GPL"); |