1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (c) 2018 Fuzhou Rockchip Electronics Co., Ltd.
3
4 #include <linux/delay.h>
5 #include <linux/i2c.h>
6 #include <linux/module.h>
7 #include <linux/pm_runtime.h>
8 #include <linux/rk-camera-module.h>
9 #include <linux/version.h>
10 #include <media/v4l2-ctrls.h>
11 #include <media/v4l2-device.h>
12 #include <linux/rk_vcm_head.h>
13 #include <linux/compat.h>
14
15 #define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x0)
16 #define VM149C_NAME "vm149c"
17
18 #define VM149C_MAX_CURRENT 100U
19 #define VM149C_MAX_REG 1023U
20
21 #define VM149C_DEFAULT_START_CURRENT 0
22 #define VM149C_DEFAULT_RATED_CURRENT 100
23 #define VM149C_DEFAULT_STEP_MODE 4
24
25 /* vm149c device structure */
26 struct vm149c_device {
27 struct v4l2_ctrl_handler ctrls_vcm;
28 struct v4l2_subdev sd;
29 struct v4l2_device vdev;
30 u16 current_val;
31
32 unsigned short current_related_pos;
33 unsigned short current_lens_pos;
34 unsigned int start_current;
35 unsigned int rated_current;
36 unsigned int step;
37 unsigned int step_mode;
38 unsigned int vcm_movefull_t;
39
40 struct __kernel_old_timeval start_move_tv;
41 struct __kernel_old_timeval end_move_tv;
42 unsigned long move_ms;
43
44 u32 module_index;
45 const char *module_facing;
46 struct rk_cam_vcm_cfg vcm_cfg;
47 int max_ma;
48 };
49
to_vm149c_vcm(struct v4l2_ctrl * ctrl)50 static inline struct vm149c_device *to_vm149c_vcm(struct v4l2_ctrl *ctrl)
51 {
52 return container_of(ctrl->handler, struct vm149c_device, ctrls_vcm);
53 }
54
sd_to_vm149c_vcm(struct v4l2_subdev * subdev)55 static inline struct vm149c_device *sd_to_vm149c_vcm(struct v4l2_subdev *subdev)
56 {
57 return container_of(subdev, struct vm149c_device, sd);
58 }
59
vm149c_read_msg(struct i2c_client * client,unsigned char * msb,unsigned char * lsb)60 static int vm149c_read_msg(
61 struct i2c_client *client,
62 unsigned char *msb, unsigned char *lsb)
63 {
64 int ret = 0;
65 struct i2c_msg msg[1];
66 unsigned char data[2];
67 int retries;
68
69 if (!client->adapter) {
70 dev_err(&client->dev, "client->adapter NULL\n");
71 return -ENODEV;
72 }
73
74 for (retries = 0; retries < 5; retries++) {
75 msg->addr = client->addr;
76 msg->flags = 1;
77 msg->len = 2;
78 msg->buf = data;
79
80 ret = i2c_transfer(client->adapter, msg, 1);
81 if (ret == 1) {
82 dev_dbg(&client->dev,
83 "%s: vcm i2c ok, addr 0x%x, data 0x%x, 0x%x\n",
84 __func__, msg->addr, data[0], data[1]);
85
86 *msb = data[0];
87 *lsb = data[1];
88 return 0;
89 }
90
91 dev_info(&client->dev,
92 "retrying I2C... %d\n", retries);
93 retries++;
94 set_current_state(TASK_UNINTERRUPTIBLE);
95 schedule_timeout(msecs_to_jiffies(20));
96 }
97 dev_err(&client->dev,
98 "%s: i2c write to failed with error %d\n", __func__, ret);
99 return ret;
100 }
101
vm149c_write_msg(struct i2c_client * client,u8 msb,u8 lsb)102 static int vm149c_write_msg(
103 struct i2c_client *client,
104 u8 msb, u8 lsb)
105 {
106 int ret = 0;
107 struct i2c_msg msg[1];
108 unsigned char data[2];
109 int retries;
110
111 if (!client->adapter) {
112 dev_err(&client->dev, "client->adapter NULL\n");
113 return -ENODEV;
114 }
115
116 for (retries = 0; retries < 5; retries++) {
117 msg->addr = client->addr;
118 msg->flags = 0;
119 msg->len = 2;
120 msg->buf = data;
121
122 data[0] = msb;
123 data[1] = lsb;
124
125 ret = i2c_transfer(client->adapter, msg, 1);
126 usleep_range(50, 100);
127
128 if (ret == 1) {
129 dev_dbg(&client->dev,
130 "%s: vcm i2c ok, addr 0x%x, data 0x%x, 0x%x\n",
131 __func__, msg->addr, data[0], data[1]);
132 return 0;
133 }
134
135 dev_info(&client->dev,
136 "retrying I2C... %d\n", retries);
137 retries++;
138 set_current_state(TASK_UNINTERRUPTIBLE);
139 schedule_timeout(msecs_to_jiffies(20));
140 }
141 dev_err(&client->dev,
142 "i2c write to failed with error %d\n", ret);
143 return ret;
144 }
145
vm149c_get_pos(struct vm149c_device * dev_vcm,unsigned int * cur_pos)146 static int vm149c_get_pos(
147 struct vm149c_device *dev_vcm,
148 unsigned int *cur_pos)
149 {
150 struct i2c_client *client = v4l2_get_subdevdata(&dev_vcm->sd);
151 int ret = 0;
152 unsigned char lsb = 0;
153 unsigned char msb = 0;
154 unsigned int abs_step = 0;
155
156 ret = vm149c_read_msg(client, &msb, &lsb);
157 if (ret != 0)
158 goto err;
159
160 abs_step = (((unsigned int)(msb & 0x3FU)) << 4U) |
161 (((unsigned int)lsb) >> 4U);
162 if (abs_step <= dev_vcm->start_current)
163 abs_step = VCMDRV_MAX_LOG;
164 else if ((abs_step > dev_vcm->start_current) &&
165 (abs_step <= dev_vcm->rated_current))
166 abs_step = (dev_vcm->rated_current - abs_step) / dev_vcm->step;
167 else
168 abs_step = 0;
169
170 *cur_pos = abs_step;
171 dev_dbg(&client->dev, "%s: get position %d\n", __func__, *cur_pos);
172 return 0;
173
174 err:
175 dev_err(&client->dev,
176 "%s: failed with error %d\n", __func__, ret);
177 return ret;
178 }
179
vm149c_set_pos(struct vm149c_device * dev_vcm,unsigned int dest_pos)180 static int vm149c_set_pos(
181 struct vm149c_device *dev_vcm,
182 unsigned int dest_pos)
183 {
184 int ret = 0;
185 unsigned char lsb = 0;
186 unsigned char msb = 0;
187 unsigned int position = 0;
188 struct i2c_client *client = v4l2_get_subdevdata(&dev_vcm->sd);
189
190 if (dest_pos >= VCMDRV_MAX_LOG)
191 position = dev_vcm->start_current;
192 else
193 position = dev_vcm->start_current +
194 (dev_vcm->step * (VCMDRV_MAX_LOG - dest_pos));
195
196 if (position > VM149C_MAX_REG)
197 position = VM149C_MAX_REG;
198
199 dev_vcm->current_lens_pos = position;
200 dev_vcm->current_related_pos = dest_pos;
201 msb = (0x00U | ((dev_vcm->current_lens_pos & 0x3F0U) >> 4U));
202 lsb = (((dev_vcm->current_lens_pos & 0x0FU) << 4U) |
203 dev_vcm->step_mode);
204 ret = vm149c_write_msg(client, msb, lsb);
205 if (ret != 0)
206 goto err;
207
208 return ret;
209 err:
210 dev_err(&client->dev,
211 "%s: failed with error %d\n", __func__, ret);
212 return ret;
213 }
214
vm149c_get_ctrl(struct v4l2_ctrl * ctrl)215 static int vm149c_get_ctrl(struct v4l2_ctrl *ctrl)
216 {
217 struct vm149c_device *dev_vcm = to_vm149c_vcm(ctrl);
218
219 if (ctrl->id == V4L2_CID_FOCUS_ABSOLUTE)
220 return vm149c_get_pos(dev_vcm, &ctrl->val);
221
222 return -EINVAL;
223 }
224
vm149c_set_ctrl(struct v4l2_ctrl * ctrl)225 static int vm149c_set_ctrl(struct v4l2_ctrl *ctrl)
226 {
227 struct vm149c_device *dev_vcm = to_vm149c_vcm(ctrl);
228 struct i2c_client *client = v4l2_get_subdevdata(&dev_vcm->sd);
229 unsigned int dest_pos = ctrl->val;
230 int move_pos;
231 long int mv_us;
232 int ret = 0;
233
234 if (ctrl->id == V4L2_CID_FOCUS_ABSOLUTE) {
235 if (dest_pos > VCMDRV_MAX_LOG) {
236 dev_info(&client->dev,
237 "%s dest_pos is error. %d > %d\n",
238 __func__, dest_pos, VCMDRV_MAX_LOG);
239 return -EINVAL;
240 }
241 /* calculate move time */
242 move_pos = dev_vcm->current_related_pos - dest_pos;
243 if (move_pos < 0)
244 move_pos = -move_pos;
245
246 ret = vm149c_set_pos(dev_vcm, dest_pos);
247
248 dev_vcm->move_ms =
249 ((dev_vcm->vcm_movefull_t *
250 (uint32_t)move_pos) /
251 VCMDRV_MAX_LOG);
252 dev_dbg(&client->dev, "dest_pos %d, move_ms %ld\n",
253 dest_pos, dev_vcm->move_ms);
254
255 dev_vcm->start_move_tv = ns_to_kernel_old_timeval(ktime_get_ns());
256 mv_us = dev_vcm->start_move_tv.tv_usec +
257 dev_vcm->move_ms * 1000;
258 if (mv_us >= 1000000) {
259 dev_vcm->end_move_tv.tv_sec =
260 dev_vcm->start_move_tv.tv_sec + 1;
261 dev_vcm->end_move_tv.tv_usec = mv_us - 1000000;
262 } else {
263 dev_vcm->end_move_tv.tv_sec =
264 dev_vcm->start_move_tv.tv_sec;
265 dev_vcm->end_move_tv.tv_usec = mv_us;
266 }
267 }
268
269 return ret;
270 }
271
272 static const struct v4l2_ctrl_ops vm149c_vcm_ctrl_ops = {
273 .g_volatile_ctrl = vm149c_get_ctrl,
274 .s_ctrl = vm149c_set_ctrl,
275 };
276
vm149c_open(struct v4l2_subdev * sd,struct v4l2_subdev_fh * fh)277 static int vm149c_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
278 {
279 int rval;
280
281 rval = pm_runtime_get_sync(sd->dev);
282 if (rval < 0) {
283 pm_runtime_put_noidle(sd->dev);
284 return rval;
285 }
286
287 return 0;
288 }
289
vm149c_close(struct v4l2_subdev * sd,struct v4l2_subdev_fh * fh)290 static int vm149c_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
291 {
292 pm_runtime_put(sd->dev);
293
294 return 0;
295 }
296
297 static const struct v4l2_subdev_internal_ops vm149c_int_ops = {
298 .open = vm149c_open,
299 .close = vm149c_close,
300 };
301
vm149c_update_vcm_cfg(struct vm149c_device * dev_vcm)302 static void vm149c_update_vcm_cfg(struct vm149c_device *dev_vcm)
303 {
304 struct i2c_client *client = v4l2_get_subdevdata(&dev_vcm->sd);
305 int cur_dist;
306
307 if (dev_vcm->max_ma == 0) {
308 dev_err(&client->dev, "max current is zero");
309 return;
310 }
311
312 cur_dist = dev_vcm->vcm_cfg.rated_ma - dev_vcm->vcm_cfg.start_ma;
313 cur_dist = cur_dist * VM149C_MAX_REG / dev_vcm->max_ma;
314 dev_vcm->step = (cur_dist + (VCMDRV_MAX_LOG - 1)) / VCMDRV_MAX_LOG;
315 dev_vcm->start_current = dev_vcm->vcm_cfg.start_ma *
316 VM149C_MAX_REG / dev_vcm->max_ma;
317 dev_vcm->rated_current = dev_vcm->start_current +
318 VCMDRV_MAX_LOG * dev_vcm->step;
319 dev_vcm->step_mode = dev_vcm->vcm_cfg.step_mode;
320
321 dev_dbg(&client->dev,
322 "vcm_cfg: %d, %d, %d, max_ma %d\n",
323 dev_vcm->vcm_cfg.start_ma,
324 dev_vcm->vcm_cfg.rated_ma,
325 dev_vcm->vcm_cfg.step_mode,
326 dev_vcm->max_ma);
327 }
328
vm149c_ioctl(struct v4l2_subdev * sd,unsigned int cmd,void * arg)329 static long vm149c_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
330 {
331 struct i2c_client *client = v4l2_get_subdevdata(sd);
332 struct vm149c_device *vm149c_dev = sd_to_vm149c_vcm(sd);
333 struct rk_cam_vcm_tim *vcm_tim;
334 struct rk_cam_vcm_cfg *vcm_cfg;
335 int ret = 0;
336
337 if (cmd == RK_VIDIOC_VCM_TIMEINFO) {
338 vcm_tim = (struct rk_cam_vcm_tim *)arg;
339
340 vcm_tim->vcm_start_t.tv_sec = vm149c_dev->start_move_tv.tv_sec;
341 vcm_tim->vcm_start_t.tv_usec = vm149c_dev->start_move_tv.tv_usec;
342 vcm_tim->vcm_end_t.tv_sec = vm149c_dev->end_move_tv.tv_sec;
343 vcm_tim->vcm_end_t.tv_usec = vm149c_dev->end_move_tv.tv_usec;
344
345 dev_dbg(&client->dev, "vm149c_get_move_res 0x%lx, 0x%lx, 0x%lx, 0x%lx\n",
346 vcm_tim->vcm_start_t.tv_sec, vcm_tim->vcm_start_t.tv_usec,
347 vcm_tim->vcm_end_t.tv_sec, vcm_tim->vcm_end_t.tv_usec);
348 } else if (cmd == RK_VIDIOC_GET_VCM_CFG) {
349 vcm_cfg = (struct rk_cam_vcm_cfg *)arg;
350
351 vcm_cfg->start_ma = vm149c_dev->vcm_cfg.start_ma;
352 vcm_cfg->rated_ma = vm149c_dev->vcm_cfg.rated_ma;
353 vcm_cfg->step_mode = vm149c_dev->vcm_cfg.step_mode;
354 } else if (cmd == RK_VIDIOC_SET_VCM_CFG) {
355 vcm_cfg = (struct rk_cam_vcm_cfg *)arg;
356
357 vm149c_dev->vcm_cfg.start_ma = vcm_cfg->start_ma;
358 vm149c_dev->vcm_cfg.rated_ma = vcm_cfg->rated_ma;
359 vm149c_dev->vcm_cfg.step_mode = vcm_cfg->step_mode;
360 vm149c_update_vcm_cfg(vm149c_dev);
361 } else {
362 dev_err(&client->dev,
363 "cmd 0x%x not supported\n", cmd);
364 return -EINVAL;
365 }
366
367 return ret;
368 }
369
370 #ifdef CONFIG_COMPAT
vm149c_compat_ioctl32(struct v4l2_subdev * sd,unsigned int cmd,unsigned long arg)371 static long vm149c_compat_ioctl32(struct v4l2_subdev *sd, unsigned int cmd, unsigned long arg)
372 {
373 struct i2c_client *client = v4l2_get_subdevdata(sd);
374 struct rk_cam_compat_vcm_tim __user *p32 = compat_ptr(arg);
375 struct rk_cam_compat_vcm_tim compat_vcm_tim;
376 struct rk_cam_vcm_tim vcm_tim;
377 struct rk_cam_vcm_cfg vcm_cfg;
378 long ret;
379
380 if (cmd == RK_VIDIOC_COMPAT_VCM_TIMEINFO) {
381 ret = vm149c_ioctl(sd, RK_VIDIOC_VCM_TIMEINFO, &vcm_tim);
382 compat_vcm_tim.vcm_start_t.tv_sec = vcm_tim.vcm_start_t.tv_sec;
383 compat_vcm_tim.vcm_start_t.tv_usec = vcm_tim.vcm_start_t.tv_usec;
384 compat_vcm_tim.vcm_end_t.tv_sec = vcm_tim.vcm_end_t.tv_sec;
385 compat_vcm_tim.vcm_end_t.tv_usec = vcm_tim.vcm_end_t.tv_usec;
386
387 put_user(compat_vcm_tim.vcm_start_t.tv_sec, &p32->vcm_start_t.tv_sec);
388 put_user(compat_vcm_tim.vcm_start_t.tv_usec, &p32->vcm_start_t.tv_usec);
389 put_user(compat_vcm_tim.vcm_end_t.tv_sec, &p32->vcm_end_t.tv_sec);
390 put_user(compat_vcm_tim.vcm_end_t.tv_usec, &p32->vcm_end_t.tv_usec);
391 } else if (cmd == RK_VIDIOC_GET_VCM_CFG) {
392 ret = vm149c_ioctl(sd, RK_VIDIOC_GET_VCM_CFG, &vcm_cfg);
393 if (!ret)
394 ret = copy_to_user(up, &vcm_cfg, sizeof(vcm_cfg));
395 } else if (cmd == RK_VIDIOC_SET_VCM_CFG) {
396 ret = copy_from_user(&vcm_cfg, up, sizeof(vcm_cfg));
397 if (!ret)
398 ret = vm149c_ioctl(sd, cmd, &vcm_cfg);
399 } else {
400 dev_err(&client->dev,
401 "cmd 0x%x not supported\n", cmd);
402 return -EINVAL;
403 }
404
405 return ret;
406 }
407 #endif
408
409 static const struct v4l2_subdev_core_ops vm149c_core_ops = {
410 .ioctl = vm149c_ioctl,
411 #ifdef CONFIG_COMPAT
412 .compat_ioctl32 = vm149c_compat_ioctl32
413 #endif
414 };
415
416 static const struct v4l2_subdev_ops vm149c_ops = {
417 .core = &vm149c_core_ops,
418 };
419
vm149c_subdev_cleanup(struct vm149c_device * vm149c_dev)420 static void vm149c_subdev_cleanup(struct vm149c_device *vm149c_dev)
421 {
422 v4l2_device_unregister_subdev(&vm149c_dev->sd);
423 v4l2_device_unregister(&vm149c_dev->vdev);
424 v4l2_ctrl_handler_free(&vm149c_dev->ctrls_vcm);
425 media_entity_cleanup(&vm149c_dev->sd.entity);
426 }
427
vm149c_init_controls(struct vm149c_device * dev_vcm)428 static int vm149c_init_controls(struct vm149c_device *dev_vcm)
429 {
430 struct v4l2_ctrl_handler *hdl = &dev_vcm->ctrls_vcm;
431 const struct v4l2_ctrl_ops *ops = &vm149c_vcm_ctrl_ops;
432
433 v4l2_ctrl_handler_init(hdl, 1);
434
435 v4l2_ctrl_new_std(hdl, ops, V4L2_CID_FOCUS_ABSOLUTE,
436 0, VCMDRV_MAX_LOG, 1, VCMDRV_MAX_LOG);
437
438 if (hdl->error)
439 dev_err(dev_vcm->sd.dev, "%s fail error: 0x%x\n",
440 __func__, hdl->error);
441 dev_vcm->sd.ctrl_handler = hdl;
442 return hdl->error;
443 }
444
vm149c_probe(struct i2c_client * client,const struct i2c_device_id * id)445 static int vm149c_probe(struct i2c_client *client,
446 const struct i2c_device_id *id)
447 {
448 struct device_node *np = of_node_get(client->dev.of_node);
449 struct vm149c_device *vm149c_dev;
450 unsigned int max_ma, start_ma, rated_ma, step_mode;
451 struct v4l2_subdev *sd;
452 char facing[2];
453 int ret;
454
455 dev_info(&client->dev, "probing...\n");
456 dev_info(&client->dev, "driver version: %02x.%02x.%02x",
457 DRIVER_VERSION >> 16,
458 (DRIVER_VERSION & 0xff00) >> 8,
459 DRIVER_VERSION & 0x00ff);
460
461 if (of_property_read_u32(np,
462 OF_CAMERA_VCMDRV_MAX_CURRENT,
463 (unsigned int *)&max_ma)) {
464 max_ma = VM149C_MAX_CURRENT;
465 dev_info(&client->dev,
466 "could not get module %s from dts!\n",
467 OF_CAMERA_VCMDRV_MAX_CURRENT);
468 }
469 if (max_ma == 0)
470 max_ma = VM149C_MAX_CURRENT;
471
472 if (of_property_read_u32(np,
473 OF_CAMERA_VCMDRV_START_CURRENT,
474 (unsigned int *)&start_ma)) {
475 start_ma = VM149C_DEFAULT_START_CURRENT;
476 dev_info(&client->dev,
477 "could not get module %s from dts!\n",
478 OF_CAMERA_VCMDRV_START_CURRENT);
479 }
480 if (of_property_read_u32(np,
481 OF_CAMERA_VCMDRV_RATED_CURRENT,
482 (unsigned int *)&rated_ma)) {
483 rated_ma = VM149C_DEFAULT_RATED_CURRENT;
484 dev_info(&client->dev,
485 "could not get module %s from dts!\n",
486 OF_CAMERA_VCMDRV_RATED_CURRENT);
487 }
488 if (of_property_read_u32(np,
489 OF_CAMERA_VCMDRV_STEP_MODE,
490 (unsigned int *)&step_mode)) {
491 step_mode = VM149C_DEFAULT_STEP_MODE;
492 dev_info(&client->dev,
493 "could not get module %s from dts!\n",
494 OF_CAMERA_VCMDRV_STEP_MODE);
495 }
496
497 vm149c_dev = devm_kzalloc(&client->dev, sizeof(*vm149c_dev),
498 GFP_KERNEL);
499 if (vm149c_dev == NULL)
500 return -ENOMEM;
501
502 ret = of_property_read_u32(np, RKMODULE_CAMERA_MODULE_INDEX,
503 &vm149c_dev->module_index);
504 ret |= of_property_read_string(np, RKMODULE_CAMERA_MODULE_FACING,
505 &vm149c_dev->module_facing);
506 if (ret) {
507 dev_err(&client->dev,
508 "could not get module information!\n");
509 return -EINVAL;
510 }
511
512 v4l2_i2c_subdev_init(&vm149c_dev->sd, client, &vm149c_ops);
513 vm149c_dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
514 vm149c_dev->sd.internal_ops = &vm149c_int_ops;
515
516 ret = vm149c_init_controls(vm149c_dev);
517 if (ret)
518 goto err_cleanup;
519
520 ret = media_entity_pads_init(&vm149c_dev->sd.entity, 0, NULL);
521 if (ret < 0)
522 goto err_cleanup;
523
524 sd = &vm149c_dev->sd;
525 sd->entity.function = MEDIA_ENT_F_LENS;
526
527 memset(facing, 0, sizeof(facing));
528 if (strcmp(vm149c_dev->module_facing, "back") == 0)
529 facing[0] = 'b';
530 else
531 facing[0] = 'f';
532
533 snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s",
534 vm149c_dev->module_index, facing,
535 VM149C_NAME, dev_name(sd->dev));
536 ret = v4l2_async_register_subdev(sd);
537 if (ret)
538 dev_err(&client->dev, "v4l2 async register subdev failed\n");
539
540 vm149c_dev->max_ma = max_ma;
541 vm149c_dev->vcm_cfg.start_ma = start_ma;
542 vm149c_dev->vcm_cfg.rated_ma = rated_ma;
543 vm149c_dev->vcm_cfg.step_mode = step_mode;
544 vm149c_update_vcm_cfg(vm149c_dev);
545 vm149c_dev->move_ms = 0;
546 vm149c_dev->current_related_pos = VCMDRV_MAX_LOG;
547 vm149c_dev->start_move_tv = ns_to_kernel_old_timeval(ktime_get_ns());
548 vm149c_dev->end_move_tv = ns_to_kernel_old_timeval(ktime_get_ns());
549 if ((vm149c_dev->step_mode & 0x0c) != 0) {
550 vm149c_dev->vcm_movefull_t =
551 64 * (1 << (vm149c_dev->step_mode & 0x03)) * 1024 /
552 ((1 << (((vm149c_dev->step_mode & 0x0c) >> 2) - 1)) * 1000);
553 } else {
554 vm149c_dev->vcm_movefull_t = 64 * 1023 / 1000;
555 }
556
557 pm_runtime_set_active(&client->dev);
558 pm_runtime_enable(&client->dev);
559 pm_runtime_idle(&client->dev);
560
561 dev_info(&client->dev, "probing successful\n");
562
563 return 0;
564
565 err_cleanup:
566 vm149c_subdev_cleanup(vm149c_dev);
567 dev_err(&client->dev, "Probe failed: %d\n", ret);
568 return ret;
569 }
570
vm149c_remove(struct i2c_client * client)571 static int vm149c_remove(struct i2c_client *client)
572 {
573 struct v4l2_subdev *sd = i2c_get_clientdata(client);
574 struct vm149c_device *vm149c_dev = sd_to_vm149c_vcm(sd);
575
576 pm_runtime_disable(&client->dev);
577 vm149c_subdev_cleanup(vm149c_dev);
578
579 return 0;
580 }
581
vm149c_vcm_suspend(struct device * dev)582 static int __maybe_unused vm149c_vcm_suspend(struct device *dev)
583 {
584 return 0;
585 }
586
vm149c_vcm_resume(struct device * dev)587 static int __maybe_unused vm149c_vcm_resume(struct device *dev)
588 {
589 struct i2c_client *client = to_i2c_client(dev);
590 struct v4l2_subdev *sd = i2c_get_clientdata(client);
591 struct vm149c_device *vm149c_dev = sd_to_vm149c_vcm(sd);
592
593 vm149c_set_pos(vm149c_dev, vm149c_dev->current_related_pos);
594 return 0;
595 }
596
597 static const struct i2c_device_id vm149c_id_table[] = {
598 { VM149C_NAME, 0 },
599 { { 0 } }
600 };
601 MODULE_DEVICE_TABLE(i2c, vm149c_id_table);
602
603 static const struct of_device_id vm149c_of_table[] = {
604 { .compatible = "silicon touch,vm149c" },
605 { { 0 } }
606 };
607 MODULE_DEVICE_TABLE(of, vm149c_of_table);
608
609 static const struct dev_pm_ops vm149c_pm_ops = {
610 SET_SYSTEM_SLEEP_PM_OPS(vm149c_vcm_suspend, vm149c_vcm_resume)
611 SET_RUNTIME_PM_OPS(vm149c_vcm_suspend, vm149c_vcm_resume, NULL)
612 };
613
614 static struct i2c_driver vm149c_i2c_driver = {
615 .driver = {
616 .name = VM149C_NAME,
617 .pm = &vm149c_pm_ops,
618 .of_match_table = vm149c_of_table,
619 },
620 .probe = &vm149c_probe,
621 .remove = &vm149c_remove,
622 .id_table = vm149c_id_table,
623 };
624
625 module_i2c_driver(vm149c_i2c_driver);
626
627 MODULE_DESCRIPTION("VM149C VCM driver");
628 MODULE_LICENSE("GPL v2");
629