1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * fp5510 vcm driver
4 *
5 * Copyright (C) 2019 Fuzhou Rockchip Electronics Co., Ltd.
6 */
7
8 #include <linux/delay.h>
9 #include <linux/i2c.h>
10 #include <linux/module.h>
11 #include <linux/pm_runtime.h>
12 #include <linux/rk-camera-module.h>
13 #include <linux/version.h>
14 #include <media/v4l2-ctrls.h>
15 #include <media/v4l2-device.h>
16 #include <linux/rk_vcm_head.h>
17 #include <linux/gpio/consumer.h>
18 #include <linux/compat.h>
19
20 #define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x0)
21 #define FP5510_NAME "fp5510"
22
23 #define FP5510_MAX_CURRENT 120U
24 #define FP5510_MAX_REG 1023U
25
26 #define FP5510_DEFAULT_START_CURRENT 0
27 #define FP5510_DEFAULT_RATED_CURRENT 100
28 #define FP5510_DEFAULT_STEP_MODE 0xd
29 #define REG_NULL 0xFF
30 #define ENABLE 0x1
31 #define DISABLE 0x0
32 /* fp5510 device structure */
33 struct fp5510_device {
34 struct v4l2_ctrl_handler ctrls_vcm;
35 struct v4l2_subdev sd;
36 struct v4l2_device vdev;
37 u16 current_val;
38 struct gpio_desc *pwdn_gpio;
39
40 unsigned short current_related_pos;
41 unsigned short current_lens_pos;
42 unsigned int start_current;
43 unsigned int rated_current;
44 unsigned int step;
45 unsigned int step_mode;
46 unsigned int vcm_movefull_t;
47 unsigned int esc_enable;
48 unsigned int tsc_enable;
49 unsigned int t_src;
50 unsigned int mclk;
51
52 struct __kernel_old_timeval start_move_tv;
53 struct __kernel_old_timeval end_move_tv;
54 unsigned long move_ms;
55
56 u32 module_index;
57 const char *module_facing;
58 struct rk_cam_vcm_cfg vcm_cfg;
59 int max_ma;
60 };
61
62 struct TimeTabel_s {
63 unsigned int t_src;/* time of slew rate control */
64 unsigned int step00;/* S[1:0] /MCLK[1:0] step period */
65 unsigned int step01;
66 unsigned int step10;
67 unsigned int step11;
68 };
69
70 static const struct TimeTabel_s fp5510_lsc_time_table[] = {
71 {0b10000, 136, 272, 544, 1088},
72 {0b10001, 130, 260, 520, 1040},
73 {0b10010, 125, 250, 500, 1000},
74 {0b10011, 120, 240, 480, 960 },
75 {0b10100, 116, 232, 464, 928 },
76 {0b10101, 112, 224, 448, 896 },
77 {0b10110, 108, 216, 432, 864 },
78 {0b10111, 104, 208, 416, 832 },
79 {0b11000, 101, 202, 404, 808 },
80 {0b11001, 98, 196, 392, 784 },
81 {0b11010, 95, 190, 380, 760 },
82 {0b11011, 92, 184, 368, 736 },
83 {0b11100, 89, 178, 356, 712 },
84 {0b11101, 87, 174, 348, 696 },
85 {0b11110, 85, 170, 340, 680 },
86 {0b11111, 83, 166, 332, 664 },
87 {0b00000, 81, 162, 324, 648 },
88 {0b00001, 79, 158, 316, 632 },
89 {0b00010, 77, 155, 310, 620 },
90 {0b00011, 76, 152, 304, 608 },
91 {0b00100, 74, 149, 298, 596 },
92 {0b00101, 73, 146, 292, 584 },
93 {0b00110, 71, 143, 286, 572 },
94 {0b00111, 70, 140, 280, 560 },
95 {0b01000, 69, 138, 276, 552 },
96 {0b01001, 68, 136, 272, 544 },
97 {0b01010, 67, 134, 268, 536 },
98 {0b01011, 66, 132, 264, 528 },
99 {0b01100, 65, 131, 262, 524 },
100 {0b01101, 65, 130, 260, 520 },
101 {0b01110, 64, 129, 258, 516 },
102 {0b01111, 64, 128, 256, 512 },
103 {REG_NULL, 0, 0, 0, 0},
104 };
105
106 static const struct TimeTabel_s fp5510_dlc_time_table[] = {/* us */
107 {0b10000, 21250, 10630, 5310, 2660},
108 {0b10001, 20310, 10160, 5080, 2540},
109 {0b10010, 19530, 9770, 4880, 2440},
110 {0b10011, 18750, 9380, 4690, 2340},
111 {0b10100, 18130, 9060, 4530, 2270},
112 {0b10101, 17500, 8750, 4380, 2190},
113 {0b10110, 16880, 8440, 4220, 2110},
114 {0b10111, 16250, 8130, 4060, 2030},
115 {0b11000, 15780, 7890, 3950, 1970},
116 {0b11001, 15310, 7660, 3830, 1910},
117 {0b11010, 14840, 7420, 3710, 1860},
118 {0b11011, 14380, 7190, 3590, 1800},
119 {0b11100, 13910, 6950, 3480, 1740},
120 {0b11101, 13590, 6800, 3400, 1700},
121 {0b11110, 13280, 6640, 3320, 1660},
122 {0b11111, 12970, 6480, 3240, 1620},
123 {0b00000, 12660, 6330, 3160, 1580},
124 {0b00001, 12340, 6170, 3090, 1540},
125 {0b00010, 12110, 6050, 3030, 1510},
126 {0b00011, 11880, 5940, 2970, 1480},
127 {0b00100, 11640, 5820, 2910, 1460},
128 {0b00101, 11410, 5700, 2850, 1430},
129 {0b00110, 11170, 5590, 2790, 1400},
130 {0b00111, 10940, 5470, 2730, 1370},
131 {0b01000, 10780, 5390, 2700, 1350},
132 {0b01001, 10630, 5310, 2660, 1330},
133 {0b01010, 10470, 5230, 2620, 1310},
134 {0b01011, 10310, 5160, 2580, 1290},
135 {0b01100, 10230, 5120, 2560, 1280},
136 {0b01101, 10160, 5080, 2540, 1270},
137 {0b01110, 10080, 5040, 2520, 1260},
138 {0b01111, 10000, 5000, 2500, 1250},
139 {REG_NULL, 0, 0, 0, 0},
140 };
141
to_fp5510_vcm(struct v4l2_ctrl * ctrl)142 static inline struct fp5510_device *to_fp5510_vcm(struct v4l2_ctrl *ctrl)
143 {
144 return container_of(ctrl->handler, struct fp5510_device, ctrls_vcm);
145 }
146
sd_to_fp5510_vcm(struct v4l2_subdev * subdev)147 static inline struct fp5510_device *sd_to_fp5510_vcm(struct v4l2_subdev *subdev)
148 {
149 return container_of(subdev, struct fp5510_device, sd);
150 }
151
__fp5510_power_on(struct fp5510_device * dev_vcm)152 static int __fp5510_power_on(struct fp5510_device *dev_vcm)
153 {
154 if (!IS_ERR(dev_vcm->pwdn_gpio)) {
155 gpiod_set_value_cansleep(dev_vcm->pwdn_gpio, 1);
156 dev_err(dev_vcm->sd.dev, "power on success!\n");
157 }
158
159 return 0;
160 }
161
__fp5510_power_off(struct fp5510_device * dev_vcm)162 static int __fp5510_power_off(struct fp5510_device *dev_vcm)
163 {
164 if (!IS_ERR(dev_vcm->pwdn_gpio)) {
165 gpiod_set_value_cansleep(dev_vcm->pwdn_gpio, 0);
166 dev_err(dev_vcm->sd.dev, "power off success!\n");
167 }
168
169 return 0;
170 }
171
fp5510_read_msg(struct i2c_client * client,unsigned char * msb,unsigned char * lsb)172 static int fp5510_read_msg(struct i2c_client *client,
173 unsigned char *msb, unsigned char *lsb)
174 {
175 int ret = 0;
176 struct i2c_msg msg[1];
177 unsigned char data[2];
178 int retries;
179
180 if (!client->adapter) {
181 dev_err(&client->dev, "client->adapter NULL\n");
182 return -ENODEV;
183 }
184
185 for (retries = 0; retries < 5; retries++) {
186 msg->addr = client->addr;
187 msg->flags = I2C_M_RD;
188 msg->len = 2;
189 msg->buf = data;
190
191 ret = i2c_transfer(client->adapter, msg, 1);
192 if (ret == 1) {
193 dev_dbg(&client->dev,
194 "%s: vcm i2c ok, addr 0x%x, data 0x%x, 0x%x\n",
195 __func__, msg->addr, data[0], data[1]);
196
197 *msb = data[0];
198 *lsb = data[1];
199 return 0;
200 }
201
202 dev_info(&client->dev,
203 "retrying I2C... %d\n", retries);
204 retries++;
205 msleep(20);
206 }
207 dev_err(&client->dev,
208 "%s: i2c write to failed with error %d\n", __func__, ret);
209 return ret;
210 }
211
fp5510_write_msg(struct i2c_client * client,u8 msb,u8 lsb)212 static int fp5510_write_msg(struct i2c_client *client,
213 u8 msb, u8 lsb)
214 {
215 int ret = 0;
216 struct i2c_msg msg[1];
217 unsigned char data[2];
218 int retries;
219
220 if (!client->adapter) {
221 dev_err(&client->dev, "client->adapter NULL\n");
222 return -ENODEV;
223 }
224
225 for (retries = 0; retries < 5; retries++) {
226 msg->addr = client->addr;
227 msg->flags = 0;
228 msg->len = 2;
229 msg->buf = data;
230
231 data[0] = msb;
232 data[1] = lsb;
233
234 ret = i2c_transfer(client->adapter, msg, 1);
235
236 if (ret == 1) {
237 dev_dbg(&client->dev,
238 "%s: vcm i2c ok, addr 0x%x, data 0x%x, 0x%x\n",
239 __func__, msg->addr, data[0], data[1]);
240 return 0;
241 }
242
243 dev_info(&client->dev,
244 "retrying I2C... %d\n", retries);
245 retries++;
246 msleep(20);
247 }
248 dev_err(&client->dev,
249 "i2c write to failed with error %d msb:%d lsb:%d\n",
250 ret, msb, lsb);
251 return ret;
252 }
253
fp5510_move_time(struct fp5510_device * dev_vcm,unsigned int move_pos)254 static unsigned int fp5510_move_time(struct fp5510_device *dev_vcm,
255 unsigned int move_pos)
256 {
257 unsigned int move_time_ms = 200;
258 unsigned int step_period_lsc = 0;
259 unsigned int step_period_dlc = 0;
260 unsigned int step_period = 0;
261 int i = 0;
262 int table_cnt = 0;
263 unsigned int step_case;
264 unsigned int codes_per_step = 1;
265 struct i2c_client *client = v4l2_get_subdevdata(&dev_vcm->sd);
266
267 if (dev_vcm->esc_enable == ENABLE ||
268 dev_vcm->tsc_enable == ENABLE) {
269 step_case = dev_vcm->mclk & 0x3;
270 table_cnt = sizeof(fp5510_dlc_time_table) /
271 sizeof(struct TimeTabel_s);
272 for (i = 0; i < table_cnt; i++) {
273 if (fp5510_dlc_time_table[i].t_src == dev_vcm->t_src)
274 break;
275 }
276 } else {
277 step_case = dev_vcm->step_mode & 0x3;
278 table_cnt = sizeof(fp5510_lsc_time_table) /
279 sizeof(struct TimeTabel_s);
280 for (i = 0; i < table_cnt; i++) {
281 if (fp5510_lsc_time_table[i].t_src == dev_vcm->t_src)
282 break;
283 }
284 }
285
286 if (i >= table_cnt)
287 i = 0;
288
289 switch (step_case) {
290 case 0:
291 step_period_lsc = fp5510_lsc_time_table[i].step00;
292 step_period_dlc = fp5510_dlc_time_table[i].step00;
293 break;
294 case 1:
295 step_period_lsc = fp5510_lsc_time_table[i].step01;
296 step_period_dlc = fp5510_dlc_time_table[i].step01;
297 break;
298 case 2:
299 step_period_lsc = fp5510_lsc_time_table[i].step10;
300 step_period_dlc = fp5510_dlc_time_table[i].step10;
301 break;
302 case 3:
303 step_period_lsc = fp5510_lsc_time_table[i].step11;
304 step_period_dlc = fp5510_dlc_time_table[i].step11;
305 break;
306 default:
307 dev_err(&client->dev,
308 "%s: step_case is error %d\n",
309 __func__, step_case);
310 break;
311 }
312 codes_per_step = (dev_vcm->step_mode & 0x0c) >> 2;
313 if (codes_per_step > 1)
314 codes_per_step = 1 << (codes_per_step - 1);
315
316 if (dev_vcm->esc_enable == ENABLE || dev_vcm->tsc_enable == ENABLE)
317 step_period = step_period_dlc;
318 else
319 step_period = step_period_lsc;
320
321 if (dev_vcm->tsc_enable == ENABLE) {
322 move_time_ms = step_period * move_pos / 1000;
323 } else if (dev_vcm->esc_enable == ENABLE) {
324 move_time_ms = step_period * 2 * move_pos / 1000;
325 } else {
326 if (!codes_per_step)
327 move_time_ms = step_period * move_pos / 1000;
328 else
329 move_time_ms = step_period * move_pos /
330 codes_per_step / 1000;
331 }
332
333 return move_time_ms;
334 }
335
fp5510_get_pos(struct fp5510_device * dev_vcm,unsigned int * cur_pos)336 static int fp5510_get_pos(struct fp5510_device *dev_vcm,
337 unsigned int *cur_pos)
338 {
339 struct i2c_client *client = v4l2_get_subdevdata(&dev_vcm->sd);
340 int ret;
341 unsigned char lsb = 0;
342 unsigned char msb = 0;
343 unsigned int abs_step;
344
345 ret = fp5510_read_msg(client, &msb, &lsb);
346 if (ret != 0)
347 goto err;
348
349 abs_step = (((unsigned int)(msb & 0x3FU)) << 4U) |
350 (((unsigned int)lsb) >> 4U);
351 if (abs_step <= dev_vcm->start_current)
352 abs_step = VCMDRV_MAX_LOG;
353 else if ((abs_step > dev_vcm->start_current) &&
354 (abs_step <= dev_vcm->rated_current))
355 abs_step = (dev_vcm->rated_current - abs_step) / dev_vcm->step;
356 else
357 abs_step = 0;
358
359 *cur_pos = abs_step;
360 dev_dbg(&client->dev, "%s: get position %d\n", __func__, *cur_pos);
361 return 0;
362
363 err:
364 dev_err(&client->dev,
365 "%s: failed with error %d\n", __func__, ret);
366 return ret;
367 }
368
fp5510_set_pos(struct fp5510_device * dev_vcm,unsigned int dest_pos)369 static int fp5510_set_pos(struct fp5510_device *dev_vcm,
370 unsigned int dest_pos)
371 {
372 int ret;
373 unsigned char lsb = 0;
374 unsigned char msb = 0;
375 unsigned int position;
376 struct i2c_client *client = v4l2_get_subdevdata(&dev_vcm->sd);
377
378 if (dest_pos >= VCMDRV_MAX_LOG)
379 position = dev_vcm->start_current;
380 else
381 position = dev_vcm->start_current +
382 (dev_vcm->step * (VCMDRV_MAX_LOG - dest_pos));
383
384 if (position > FP5510_MAX_REG)
385 position = FP5510_MAX_REG;
386
387 dev_info(&client->dev, "%s: set dest_pos %d, position %d\n", __func__, dest_pos, position);
388
389 dev_vcm->current_lens_pos = position;
390 dev_vcm->current_related_pos = dest_pos;
391 msb = (0x00U | ((dev_vcm->current_lens_pos & 0x3F0U) >> 4U));
392 lsb = (((dev_vcm->current_lens_pos & 0x0FU) << 4U) |
393 dev_vcm->step_mode);
394 ret = fp5510_write_msg(client, msb, lsb);
395 if (ret != 0)
396 goto err;
397
398 return ret;
399 err:
400 dev_err(&client->dev,
401 "%s: failed with error %d\n", __func__, ret);
402 return ret;
403 }
404
fp5510_get_ctrl(struct v4l2_ctrl * ctrl)405 static int fp5510_get_ctrl(struct v4l2_ctrl *ctrl)
406 {
407 struct fp5510_device *dev_vcm = to_fp5510_vcm(ctrl);
408
409 if (ctrl->id == V4L2_CID_FOCUS_ABSOLUTE)
410 return fp5510_get_pos(dev_vcm, &ctrl->val);
411
412 return -EINVAL;
413 }
414
fp5510_set_ctrl(struct v4l2_ctrl * ctrl)415 static int fp5510_set_ctrl(struct v4l2_ctrl *ctrl)
416 {
417 struct fp5510_device *dev_vcm = to_fp5510_vcm(ctrl);
418 struct i2c_client *client = v4l2_get_subdevdata(&dev_vcm->sd);
419 unsigned int dest_pos = ctrl->val;
420 int move_pos;
421 long mv_us;
422 int ret = 0;
423
424 if (ctrl->id == V4L2_CID_FOCUS_ABSOLUTE) {
425 if (dest_pos > VCMDRV_MAX_LOG) {
426 dev_info(&client->dev,
427 "%s dest_pos is error. %d > %d\n",
428 __func__, dest_pos, VCMDRV_MAX_LOG);
429 return -EINVAL;
430 }
431 /* calculate move time */
432 move_pos = dev_vcm->current_related_pos - dest_pos;
433 if (move_pos < 0)
434 move_pos = -move_pos;
435
436 ret = fp5510_set_pos(dev_vcm, dest_pos);
437
438 dev_vcm->move_ms =
439 ((dev_vcm->vcm_movefull_t *
440 (uint32_t)move_pos) /
441 VCMDRV_MAX_LOG);
442
443 dev_vcm->start_move_tv = ns_to_kernel_old_timeval(ktime_get_ns());
444 mv_us = dev_vcm->start_move_tv.tv_usec +
445 dev_vcm->move_ms * 1000;
446 if (mv_us >= 1000000) {
447 dev_vcm->end_move_tv.tv_sec =
448 dev_vcm->start_move_tv.tv_sec + 1;
449 dev_vcm->end_move_tv.tv_usec = mv_us - 1000000;
450 } else {
451 dev_vcm->end_move_tv.tv_sec =
452 dev_vcm->start_move_tv.tv_sec;
453 dev_vcm->end_move_tv.tv_usec = mv_us;
454 }
455 }
456
457 return ret;
458 }
459
460 static const struct v4l2_ctrl_ops fp5510_vcm_ctrl_ops = {
461 .g_volatile_ctrl = fp5510_get_ctrl,
462 .s_ctrl = fp5510_set_ctrl,
463 };
464
fp5510_open(struct v4l2_subdev * sd,struct v4l2_subdev_fh * fh)465 static int fp5510_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
466 {
467 int rval;
468
469 rval = pm_runtime_get_sync(sd->dev);
470 if (rval < 0) {
471 pm_runtime_put_noidle(sd->dev);
472 return rval;
473 }
474
475 return 0;
476 }
477
fp5510_close(struct v4l2_subdev * sd,struct v4l2_subdev_fh * fh)478 static int fp5510_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
479 {
480 pm_runtime_put(sd->dev);
481
482 return 0;
483 }
484
485 static const struct v4l2_subdev_internal_ops fp5510_int_ops = {
486 .open = fp5510_open,
487 .close = fp5510_close,
488 };
489
fp5510_update_vcm_cfg(struct fp5510_device * dev_vcm)490 static void fp5510_update_vcm_cfg(struct fp5510_device *dev_vcm)
491 {
492 struct i2c_client *client = v4l2_get_subdevdata(&dev_vcm->sd);
493 int cur_dist;
494
495 if (dev_vcm->max_ma == 0) {
496 dev_err(&client->dev, "max current is zero");
497 return;
498 }
499
500 cur_dist = dev_vcm->vcm_cfg.rated_ma - dev_vcm->vcm_cfg.start_ma;
501 cur_dist = cur_dist * FP5510_MAX_REG / dev_vcm->max_ma;
502 dev_vcm->step = (cur_dist + (VCMDRV_MAX_LOG - 1)) / VCMDRV_MAX_LOG;
503 dev_vcm->start_current = dev_vcm->vcm_cfg.start_ma *
504 FP5510_MAX_REG / dev_vcm->max_ma;
505 dev_vcm->rated_current = dev_vcm->start_current +
506 VCMDRV_MAX_LOG * dev_vcm->step;
507 dev_vcm->step_mode = dev_vcm->vcm_cfg.step_mode;
508
509 dev_info(&client->dev,
510 "vcm_cfg: %d, %d, %d, max_ma %d\n",
511 dev_vcm->vcm_cfg.start_ma,
512 dev_vcm->vcm_cfg.rated_ma,
513 dev_vcm->vcm_cfg.step_mode,
514 dev_vcm->max_ma);
515 }
516
fp5510_ioctl(struct v4l2_subdev * sd,unsigned int cmd,void * arg)517 static long fp5510_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
518 {
519 struct i2c_client *client = v4l2_get_subdevdata(sd);
520 struct fp5510_device *fp5510_dev = sd_to_fp5510_vcm(sd);
521 struct rk_cam_vcm_tim *vcm_tim;
522 struct rk_cam_vcm_cfg *vcm_cfg;
523 int ret = 0;
524
525 if (cmd == RK_VIDIOC_VCM_TIMEINFO) {
526 vcm_tim = (struct rk_cam_vcm_tim *)arg;
527
528 vcm_tim->vcm_start_t.tv_sec = fp5510_dev->start_move_tv.tv_sec;
529 vcm_tim->vcm_start_t.tv_usec =
530 fp5510_dev->start_move_tv.tv_usec;
531 vcm_tim->vcm_end_t.tv_sec = fp5510_dev->end_move_tv.tv_sec;
532 vcm_tim->vcm_end_t.tv_usec = fp5510_dev->end_move_tv.tv_usec;
533
534 dev_dbg(&client->dev, "fp5510_get_move_res 0x%lx, 0x%lx, 0x%lx, 0x%lx\n",
535 vcm_tim->vcm_start_t.tv_sec,
536 vcm_tim->vcm_start_t.tv_usec,
537 vcm_tim->vcm_end_t.tv_sec,
538 vcm_tim->vcm_end_t.tv_usec);
539 } else if (cmd == RK_VIDIOC_GET_VCM_CFG) {
540 vcm_cfg = (struct rk_cam_vcm_cfg *)arg;
541
542 vcm_cfg->start_ma = fp5510_dev->vcm_cfg.start_ma;
543 vcm_cfg->rated_ma = fp5510_dev->vcm_cfg.rated_ma;
544 vcm_cfg->step_mode = fp5510_dev->vcm_cfg.step_mode;
545 } else if (cmd == RK_VIDIOC_SET_VCM_CFG) {
546 vcm_cfg = (struct rk_cam_vcm_cfg *)arg;
547
548 fp5510_dev->vcm_cfg.start_ma = vcm_cfg->start_ma;
549 fp5510_dev->vcm_cfg.rated_ma = vcm_cfg->rated_ma;
550 fp5510_dev->vcm_cfg.step_mode = vcm_cfg->step_mode;
551 fp5510_update_vcm_cfg(fp5510_dev);
552 } else {
553 dev_err(&client->dev,
554 "cmd 0x%x not supported\n", cmd);
555 return -EINVAL;
556 }
557
558 return ret;
559 }
560
561 #ifdef CONFIG_COMPAT
fp5510_compat_ioctl32(struct v4l2_subdev * sd,unsigned int cmd,unsigned long arg)562 static long fp5510_compat_ioctl32(struct v4l2_subdev *sd,
563 unsigned int cmd, unsigned long arg)
564 {
565 struct i2c_client *client = v4l2_get_subdevdata(sd);
566 void __user *up = compat_ptr(arg);
567 struct rk_cam_compat_vcm_tim compat_vcm_tim;
568 struct rk_cam_vcm_tim vcm_tim;
569 struct rk_cam_vcm_cfg vcm_cfg;
570 long ret;
571
572 if (cmd == RK_VIDIOC_COMPAT_VCM_TIMEINFO) {
573 struct rk_cam_compat_vcm_tim __user *p32 = up;
574
575 ret = fp5510_ioctl(sd, RK_VIDIOC_VCM_TIMEINFO, &vcm_tim);
576 compat_vcm_tim.vcm_start_t.tv_sec = vcm_tim.vcm_start_t.tv_sec;
577 compat_vcm_tim.vcm_start_t.tv_usec =
578 vcm_tim.vcm_start_t.tv_usec;
579 compat_vcm_tim.vcm_end_t.tv_sec = vcm_tim.vcm_end_t.tv_sec;
580 compat_vcm_tim.vcm_end_t.tv_usec = vcm_tim.vcm_end_t.tv_usec;
581
582 put_user(compat_vcm_tim.vcm_start_t.tv_sec,
583 &p32->vcm_start_t.tv_sec);
584 put_user(compat_vcm_tim.vcm_start_t.tv_usec,
585 &p32->vcm_start_t.tv_usec);
586 put_user(compat_vcm_tim.vcm_end_t.tv_sec,
587 &p32->vcm_end_t.tv_sec);
588 put_user(compat_vcm_tim.vcm_end_t.tv_usec,
589 &p32->vcm_end_t.tv_usec);
590 } else if (cmd == RK_VIDIOC_GET_VCM_CFG) {
591 ret = fp5510_ioctl(sd, RK_VIDIOC_GET_VCM_CFG, &vcm_cfg);
592 if (!ret) {
593 ret = copy_to_user(up, &vcm_cfg, sizeof(vcm_cfg));
594 if (ret)
595 ret = -EFAULT;
596 }
597 } else if (cmd == RK_VIDIOC_SET_VCM_CFG) {
598 ret = copy_from_user(&vcm_cfg, up, sizeof(vcm_cfg));
599 if (!ret)
600 ret = fp5510_ioctl(sd, cmd, &vcm_cfg);
601 else
602 ret = -EFAULT;
603 } else {
604 dev_err(&client->dev,
605 "cmd 0x%x not supported\n", cmd);
606 return -EINVAL;
607 }
608
609 return ret;
610 }
611 #endif
612
613 static const struct v4l2_subdev_core_ops fp5510_core_ops = {
614 .ioctl = fp5510_ioctl,
615 #ifdef CONFIG_COMPAT
616 .compat_ioctl32 = fp5510_compat_ioctl32
617 #endif
618 };
619
620 static const struct v4l2_subdev_ops fp5510_ops = {
621 .core = &fp5510_core_ops,
622 };
623
fp5510_subdev_cleanup(struct fp5510_device * fp5510_dev)624 static void fp5510_subdev_cleanup(struct fp5510_device *fp5510_dev)
625 {
626 v4l2_device_unregister_subdev(&fp5510_dev->sd);
627 v4l2_device_unregister(&fp5510_dev->vdev);
628 v4l2_ctrl_handler_free(&fp5510_dev->ctrls_vcm);
629 media_entity_cleanup(&fp5510_dev->sd.entity);
630 }
631
fp5510_init_controls(struct fp5510_device * dev_vcm)632 static int fp5510_init_controls(struct fp5510_device *dev_vcm)
633 {
634 struct v4l2_ctrl_handler *hdl = &dev_vcm->ctrls_vcm;
635 const struct v4l2_ctrl_ops *ops = &fp5510_vcm_ctrl_ops;
636
637 v4l2_ctrl_handler_init(hdl, 1);
638
639 v4l2_ctrl_new_std(hdl, ops, V4L2_CID_FOCUS_ABSOLUTE,
640 0, VCMDRV_MAX_LOG, 1, VCMDRV_MAX_LOG);
641
642 if (hdl->error)
643 dev_err(dev_vcm->sd.dev, "%s fail error: 0x%x\n",
644 __func__, hdl->error);
645 dev_vcm->sd.ctrl_handler = hdl;
646 return hdl->error;
647 }
648
fp5510_probe(struct i2c_client * client,const struct i2c_device_id * id)649 static int fp5510_probe(struct i2c_client *client,
650 const struct i2c_device_id *id)
651 {
652 struct device_node *np = of_node_get(client->dev.of_node);
653 struct fp5510_device *fp5510_dev;
654 struct device *dev = &client->dev;
655 unsigned int max_ma, start_ma, rated_ma, step_mode;
656 struct v4l2_subdev *sd;
657 char facing[2];
658 unsigned char data = 0x0;
659 int ret;
660
661 dev_info(&client->dev, "probing...\n");
662 if (of_property_read_u32(np,
663 OF_CAMERA_VCMDRV_MAX_CURRENT,
664 (unsigned int *)&max_ma)) {
665 max_ma = FP5510_MAX_CURRENT;
666 dev_info(&client->dev,
667 "could not get module %s from dts!\n",
668 OF_CAMERA_VCMDRV_MAX_CURRENT);
669 }
670 if (max_ma == 0)
671 max_ma = FP5510_MAX_CURRENT;
672
673 if (of_property_read_u32(np,
674 OF_CAMERA_VCMDRV_START_CURRENT,
675 (unsigned int *)&start_ma)) {
676 start_ma = FP5510_DEFAULT_START_CURRENT;
677 dev_info(&client->dev,
678 "could not get module %s from dts!\n",
679 OF_CAMERA_VCMDRV_START_CURRENT);
680 }
681 if (of_property_read_u32(np,
682 OF_CAMERA_VCMDRV_RATED_CURRENT,
683 (unsigned int *)&rated_ma)) {
684 rated_ma = FP5510_DEFAULT_RATED_CURRENT;
685 dev_info(&client->dev,
686 "could not get module %s from dts!\n",
687 OF_CAMERA_VCMDRV_RATED_CURRENT);
688 }
689 if (of_property_read_u32(np,
690 OF_CAMERA_VCMDRV_STEP_MODE,
691 (unsigned int *)&step_mode)) {
692 step_mode = FP5510_DEFAULT_STEP_MODE;
693 dev_info(&client->dev,
694 "could not get module %s from dts!\n",
695 OF_CAMERA_VCMDRV_STEP_MODE);
696 }
697
698 fp5510_dev = devm_kzalloc(&client->dev, sizeof(*fp5510_dev),
699 GFP_KERNEL);
700 if (!fp5510_dev)
701 return -ENOMEM;
702
703 ret = of_property_read_u32(np, RKMODULE_CAMERA_MODULE_INDEX,
704 &fp5510_dev->module_index);
705 ret |= of_property_read_string(np, RKMODULE_CAMERA_MODULE_FACING,
706 &fp5510_dev->module_facing);
707 if (ret) {
708 dev_err(&client->dev,
709 "could not get module information!\n");
710 return -EINVAL;
711 }
712
713 v4l2_i2c_subdev_init(&fp5510_dev->sd, client, &fp5510_ops);
714
715 fp5510_dev->pwdn_gpio = devm_gpiod_get(dev, "pwdn", GPIOD_OUT_HIGH);
716 if (IS_ERR(fp5510_dev->pwdn_gpio))
717 dev_warn(dev, "Failed to get pwdn-gpios\n");
718
719 fp5510_dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
720 fp5510_dev->sd.internal_ops = &fp5510_int_ops;
721
722 ret = fp5510_init_controls(fp5510_dev);
723 if (ret)
724 goto err_cleanup;
725
726 __fp5510_power_on(fp5510_dev);
727
728 ret = media_entity_pads_init(&fp5510_dev->sd.entity, 0, NULL);
729 if (ret < 0)
730 goto err_cleanup;
731
732 sd = &fp5510_dev->sd;
733 sd->entity.function = MEDIA_ENT_F_LENS;
734
735 memset(facing, 0, sizeof(facing));
736 if (strcmp(fp5510_dev->module_facing, "back") == 0)
737 facing[0] = 'b';
738 else
739 facing[0] = 'f';
740
741 snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s",
742 fp5510_dev->module_index, facing,
743 FP5510_NAME, dev_name(sd->dev));
744 ret = v4l2_async_register_subdev(sd);
745 if (ret)
746 dev_err(&client->dev, "v4l2 async register subdev failed\n");
747
748 fp5510_dev->max_ma = max_ma;
749 fp5510_dev->vcm_cfg.start_ma = start_ma;
750 fp5510_dev->vcm_cfg.rated_ma = rated_ma;
751 fp5510_dev->vcm_cfg.step_mode = step_mode;
752 fp5510_update_vcm_cfg(fp5510_dev);
753 fp5510_dev->move_ms = 0;
754 fp5510_dev->current_related_pos = VCMDRV_MAX_LOG;
755 fp5510_dev->start_move_tv = ns_to_kernel_old_timeval(ktime_get_ns());
756 fp5510_dev->end_move_tv = ns_to_kernel_old_timeval(ktime_get_ns());
757 /*
758 * Note:
759 * 1. At ESC mode, ESC code=1 and TSC must be equal 0.
760 * 2. If ESC code=1 and TSC code=1, it get the TSC mode.
761 */
762 fp5510_dev->esc_enable = DISABLE;
763 fp5510_dev->tsc_enable = DISABLE;
764 fp5510_dev->mclk = 0;
765 fp5510_dev->t_src = 0x0;
766
767 ret = fp5510_write_msg(client, 0xEC, 0xA3);
768 if (ret != 0)
769 dev_err(&client->dev,
770 "%s: failed with error %d\n", __func__, ret);
771
772 data = (fp5510_dev->mclk & 0x3) | 0x04 |
773 (((fp5510_dev->tsc_enable << 0x3) |
774 (fp5510_dev->esc_enable << 0x4)) & 0x18);
775 ret = fp5510_write_msg(client, 0xA1, data);
776 if (ret != 0)
777 dev_err(&client->dev,
778 "%s: failed with error %d\n", __func__, ret);
779
780 data = (fp5510_dev->t_src << 0x3) & 0xf8;
781 ret = fp5510_write_msg(client, 0xF2, data);
782 if (ret != 0)
783 dev_err(&client->dev,
784 "%s: failed with error %d\n", __func__, ret);
785
786 ret = fp5510_write_msg(client, 0xDC, 0x51);
787 if (ret != 0)
788 dev_err(&client->dev,
789 "%s: failed with error %d\n", __func__, ret);
790
791 fp5510_dev->vcm_movefull_t =
792 fp5510_move_time(fp5510_dev, FP5510_MAX_REG);
793 pm_runtime_set_active(&client->dev);
794 pm_runtime_enable(&client->dev);
795 pm_runtime_idle(&client->dev);
796
797 dev_info(&client->dev, "probing successful\n");
798
799 return 0;
800
801 err_cleanup:
802 fp5510_subdev_cleanup(fp5510_dev);
803 dev_err(&client->dev, "Probe failed: %d\n", ret);
804 return ret;
805 }
806
fp5510_remove(struct i2c_client * client)807 static int fp5510_remove(struct i2c_client *client)
808 {
809 struct v4l2_subdev *sd = i2c_get_clientdata(client);
810 struct fp5510_device *fp5510_dev = sd_to_fp5510_vcm(sd);
811
812 pm_runtime_disable(&client->dev);
813 fp5510_subdev_cleanup(fp5510_dev);
814 if (!pm_runtime_status_suspended(&client->dev))
815 __fp5510_power_off(fp5510_dev);
816 pm_runtime_set_suspended(&client->dev);
817
818 return 0;
819 }
820
fp5510_vcm_resume(struct device * dev)821 static int __maybe_unused fp5510_vcm_resume(struct device *dev)
822 {
823 struct i2c_client *client = to_i2c_client(dev);
824 struct v4l2_subdev *sd = i2c_get_clientdata(client);
825 struct fp5510_device *fp5510_dev = sd_to_fp5510_vcm(sd);
826
827 __fp5510_power_on(fp5510_dev);
828 fp5510_set_pos(fp5510_dev, fp5510_dev->current_related_pos);
829
830 return 0;
831 }
832
fp5510_vcm_suspend(struct device * dev)833 static int __maybe_unused fp5510_vcm_suspend(struct device *dev)
834 {
835 struct i2c_client *client = to_i2c_client(dev);
836 struct v4l2_subdev *sd = i2c_get_clientdata(client);
837 struct fp5510_device *fp5510_dev = sd_to_fp5510_vcm(sd);
838
839 __fp5510_power_off(fp5510_dev);
840
841 return 0;
842 }
843
844 static const struct i2c_device_id fp5510_id_table[] = {
845 { FP5510_NAME, 0 },
846 { }
847 };
848 MODULE_DEVICE_TABLE(i2c, fp5510_id_table);
849
850 static const struct of_device_id fp5510_of_table[] = {
851 { .compatible = "fitipower,fp5510" },
852 { }
853 };
854 MODULE_DEVICE_TABLE(of, fp5510_of_table);
855
856 static const struct dev_pm_ops fp5510_pm_ops = {
857 SET_SYSTEM_SLEEP_PM_OPS(fp5510_vcm_suspend, fp5510_vcm_resume)
858 SET_RUNTIME_PM_OPS(fp5510_vcm_suspend, fp5510_vcm_resume, NULL)
859 };
860
861 static struct i2c_driver fp5510_i2c_driver = {
862 .driver = {
863 .name = FP5510_NAME,
864 .pm = &fp5510_pm_ops,
865 .of_match_table = fp5510_of_table,
866 },
867 .probe = &fp5510_probe,
868 .remove = &fp5510_remove,
869 .id_table = fp5510_id_table,
870 };
871
872 module_i2c_driver(fp5510_i2c_driver);
873
874 MODULE_DESCRIPTION("FP5510 VCM driver");
875 MODULE_LICENSE("GPL v2");
876