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12#include <linux/i2c.h>
13#include <linux/slab.h>
14#include <linux/irq.h>
15#include <linux/interrupt.h>
16#include <linux/delay.h>
17#include <linux/gpio.h>
18#include <linux/regulator/consumer.h>
19#include <linux/videodev2.h>
20#include <linux/module.h>
21#include <media/v4l2-ctrls.h>
22#include <media/v4l2-device.h>
23#include <media/v4l2-subdev.h>
24#include <media/i2c/m5mols.h>
25
26#include "m5mols.h"
27#include "m5mols_reg.h"
28
29int m5mols_debug;
30module_param(m5mols_debug, int, 0644);
31
32#define MODULE_NAME "M5MOLS"
33#define M5MOLS_I2C_CHECK_RETRY 500
34
35
36static struct regulator_bulk_data supplies[] = {
37 {
38 .supply = "core",
39 }, {
40 .supply = "dig_18",
41 }, {
42 .supply = "d_sensor",
43 }, {
44 .supply = "dig_28",
45 }, {
46 .supply = "a_sensor",
47 }, {
48 .supply = "dig_12",
49 },
50};
51
52static struct v4l2_mbus_framefmt m5mols_default_ffmt[M5MOLS_RESTYPE_MAX] = {
53 [M5MOLS_RESTYPE_MONITOR] = {
54 .width = 1920,
55 .height = 1080,
56 .code = MEDIA_BUS_FMT_VYUY8_2X8,
57 .field = V4L2_FIELD_NONE,
58 .colorspace = V4L2_COLORSPACE_JPEG,
59 },
60 [M5MOLS_RESTYPE_CAPTURE] = {
61 .width = 1920,
62 .height = 1080,
63 .code = MEDIA_BUS_FMT_JPEG_1X8,
64 .field = V4L2_FIELD_NONE,
65 .colorspace = V4L2_COLORSPACE_JPEG,
66 },
67};
68#define SIZE_DEFAULT_FFMT ARRAY_SIZE(m5mols_default_ffmt)
69
70static const struct m5mols_resolution m5mols_reg_res[] = {
71 { 0x01, M5MOLS_RESTYPE_MONITOR, 128, 96 },
72 { 0x03, M5MOLS_RESTYPE_MONITOR, 160, 120 },
73 { 0x05, M5MOLS_RESTYPE_MONITOR, 176, 144 },
74 { 0x06, M5MOLS_RESTYPE_MONITOR, 176, 176 },
75 { 0x08, M5MOLS_RESTYPE_MONITOR, 240, 320 },
76 { 0x09, M5MOLS_RESTYPE_MONITOR, 320, 240 },
77 { 0x0c, M5MOLS_RESTYPE_MONITOR, 240, 400 },
78 { 0x0d, M5MOLS_RESTYPE_MONITOR, 400, 240 },
79 { 0x0e, M5MOLS_RESTYPE_MONITOR, 352, 288 },
80 { 0x13, M5MOLS_RESTYPE_MONITOR, 480, 360 },
81 { 0x15, M5MOLS_RESTYPE_MONITOR, 640, 360 },
82 { 0x17, M5MOLS_RESTYPE_MONITOR, 640, 480 },
83 { 0x18, M5MOLS_RESTYPE_MONITOR, 720, 480 },
84 { 0x1a, M5MOLS_RESTYPE_MONITOR, 800, 480 },
85 { 0x1f, M5MOLS_RESTYPE_MONITOR, 800, 600 },
86 { 0x21, M5MOLS_RESTYPE_MONITOR, 1280, 720 },
87 { 0x25, M5MOLS_RESTYPE_MONITOR, 1920, 1080 },
88 { 0x29, M5MOLS_RESTYPE_MONITOR, 3264, 2448 },
89 { 0x39, M5MOLS_RESTYPE_MONITOR, 800, 602 },
90
91 { 0x02, M5MOLS_RESTYPE_CAPTURE, 320, 240 },
92 { 0x04, M5MOLS_RESTYPE_CAPTURE, 400, 240 },
93 { 0x07, M5MOLS_RESTYPE_CAPTURE, 480, 360 },
94 { 0x08, M5MOLS_RESTYPE_CAPTURE, 640, 360 },
95 { 0x09, M5MOLS_RESTYPE_CAPTURE, 640, 480 },
96 { 0x0a, M5MOLS_RESTYPE_CAPTURE, 800, 480 },
97 { 0x10, M5MOLS_RESTYPE_CAPTURE, 1280, 720 },
98 { 0x14, M5MOLS_RESTYPE_CAPTURE, 1280, 960 },
99 { 0x17, M5MOLS_RESTYPE_CAPTURE, 1600, 1200 },
100 { 0x19, M5MOLS_RESTYPE_CAPTURE, 1920, 1080 },
101 { 0x1a, M5MOLS_RESTYPE_CAPTURE, 2048, 1152 },
102 { 0x1b, M5MOLS_RESTYPE_CAPTURE, 2048, 1536 },
103 { 0x1c, M5MOLS_RESTYPE_CAPTURE, 2560, 1440 },
104 { 0x1d, M5MOLS_RESTYPE_CAPTURE, 2560, 1536 },
105 { 0x1f, M5MOLS_RESTYPE_CAPTURE, 2560, 1920 },
106 { 0x21, M5MOLS_RESTYPE_CAPTURE, 3264, 1836 },
107 { 0x22, M5MOLS_RESTYPE_CAPTURE, 3264, 1960 },
108 { 0x25, M5MOLS_RESTYPE_CAPTURE, 3264, 2448 },
109};
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118
119
120static u32 m5mols_swap_byte(u8 *data, u8 length)
121{
122 if (length == 1)
123 return *data;
124 else if (length == 2)
125 return be16_to_cpu(*((__be16 *)data));
126 else
127 return be32_to_cpu(*((__be32 *)data));
128}
129
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136
137
138
139static int m5mols_read(struct v4l2_subdev *sd, u32 size, u32 reg, u32 *val)
140{
141 struct i2c_client *client = v4l2_get_subdevdata(sd);
142 struct m5mols_info *info = to_m5mols(sd);
143 u8 rbuf[M5MOLS_I2C_MAX_SIZE + 1];
144 u8 category = I2C_CATEGORY(reg);
145 u8 cmd = I2C_COMMAND(reg);
146 struct i2c_msg msg[2];
147 u8 wbuf[5];
148 int ret;
149
150 if (!client->adapter)
151 return -ENODEV;
152
153 msg[0].addr = client->addr;
154 msg[0].flags = 0;
155 msg[0].len = 5;
156 msg[0].buf = wbuf;
157 wbuf[0] = 5;
158 wbuf[1] = M5MOLS_BYTE_READ;
159 wbuf[2] = category;
160 wbuf[3] = cmd;
161 wbuf[4] = size;
162
163 msg[1].addr = client->addr;
164 msg[1].flags = I2C_M_RD;
165 msg[1].len = size + 1;
166 msg[1].buf = rbuf;
167
168
169 usleep_range(200, 300);
170
171 ret = i2c_transfer(client->adapter, msg, 2);
172
173 if (ret == 2) {
174 *val = m5mols_swap_byte(&rbuf[1], size);
175 return 0;
176 }
177
178 if (info->isp_ready)
179 v4l2_err(sd, "read failed: size:%d cat:%02x cmd:%02x. %d\n",
180 size, category, cmd, ret);
181
182 return ret < 0 ? ret : -EIO;
183}
184
185int m5mols_read_u8(struct v4l2_subdev *sd, u32 reg, u8 *val)
186{
187 u32 val_32;
188 int ret;
189
190 if (I2C_SIZE(reg) != 1) {
191 v4l2_err(sd, "Wrong data size\n");
192 return -EINVAL;
193 }
194
195 ret = m5mols_read(sd, I2C_SIZE(reg), reg, &val_32);
196 if (ret)
197 return ret;
198
199 *val = (u8)val_32;
200 return ret;
201}
202
203int m5mols_read_u16(struct v4l2_subdev *sd, u32 reg, u16 *val)
204{
205 u32 val_32;
206 int ret;
207
208 if (I2C_SIZE(reg) != 2) {
209 v4l2_err(sd, "Wrong data size\n");
210 return -EINVAL;
211 }
212
213 ret = m5mols_read(sd, I2C_SIZE(reg), reg, &val_32);
214 if (ret)
215 return ret;
216
217 *val = (u16)val_32;
218 return ret;
219}
220
221int m5mols_read_u32(struct v4l2_subdev *sd, u32 reg, u32 *val)
222{
223 if (I2C_SIZE(reg) != 4) {
224 v4l2_err(sd, "Wrong data size\n");
225 return -EINVAL;
226 }
227
228 return m5mols_read(sd, I2C_SIZE(reg), reg, val);
229}
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238
239int m5mols_write(struct v4l2_subdev *sd, u32 reg, u32 val)
240{
241 struct i2c_client *client = v4l2_get_subdevdata(sd);
242 struct m5mols_info *info = to_m5mols(sd);
243 u8 wbuf[M5MOLS_I2C_MAX_SIZE + 4];
244 u8 category = I2C_CATEGORY(reg);
245 u8 cmd = I2C_COMMAND(reg);
246 u8 size = I2C_SIZE(reg);
247 u32 *buf = (u32 *)&wbuf[4];
248 struct i2c_msg msg[1];
249 int ret;
250
251 if (!client->adapter)
252 return -ENODEV;
253
254 if (size != 1 && size != 2 && size != 4) {
255 v4l2_err(sd, "Wrong data size\n");
256 return -EINVAL;
257 }
258
259 msg->addr = client->addr;
260 msg->flags = 0;
261 msg->len = (u16)size + 4;
262 msg->buf = wbuf;
263 wbuf[0] = size + 4;
264 wbuf[1] = M5MOLS_BYTE_WRITE;
265 wbuf[2] = category;
266 wbuf[3] = cmd;
267
268 *buf = m5mols_swap_byte((u8 *)&val, size);
269
270
271 usleep_range(200, 300);
272
273 ret = i2c_transfer(client->adapter, msg, 1);
274 if (ret == 1)
275 return 0;
276
277 if (info->isp_ready)
278 v4l2_err(sd, "write failed: cat:%02x cmd:%02x ret:%d\n",
279 category, cmd, ret);
280
281 return ret < 0 ? ret : -EIO;
282}
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296
297int m5mols_busy_wait(struct v4l2_subdev *sd, u32 reg, u32 value, u32 mask,
298 int timeout)
299{
300 int ms = timeout < 0 ? M5MOLS_BUSY_WAIT_DEF_TIMEOUT : timeout;
301 unsigned long end = jiffies + msecs_to_jiffies(ms);
302 u8 status;
303
304 do {
305 int ret = m5mols_read_u8(sd, reg, &status);
306
307 if (ret < 0 && !(mask & M5MOLS_I2C_RDY_WAIT_FL))
308 return ret;
309 if (!ret && (status & mask & 0xff) == (value & 0xff))
310 return 0;
311 usleep_range(100, 250);
312 } while (ms > 0 && time_is_after_jiffies(end));
313
314 return -EBUSY;
315}
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323
324
325int m5mols_enable_interrupt(struct v4l2_subdev *sd, u8 reg)
326{
327 struct m5mols_info *info = to_m5mols(sd);
328 u8 mask = is_available_af(info) ? REG_INT_AF : 0;
329 u8 dummy;
330 int ret;
331
332 ret = m5mols_read_u8(sd, SYSTEM_INT_FACTOR, &dummy);
333 if (!ret)
334 ret = m5mols_write(sd, SYSTEM_INT_ENABLE, reg & ~mask);
335 return ret;
336}
337
338int m5mols_wait_interrupt(struct v4l2_subdev *sd, u8 irq_mask, u32 timeout)
339{
340 struct m5mols_info *info = to_m5mols(sd);
341
342 int ret = wait_event_interruptible_timeout(info->irq_waitq,
343 atomic_add_unless(&info->irq_done, -1, 0),
344 msecs_to_jiffies(timeout));
345 if (ret <= 0)
346 return ret ? ret : -ETIMEDOUT;
347
348 return m5mols_busy_wait(sd, SYSTEM_INT_FACTOR, irq_mask,
349 M5MOLS_I2C_RDY_WAIT_FL | irq_mask, -1);
350}
351
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358
359
360static int m5mols_reg_mode(struct v4l2_subdev *sd, u8 mode)
361{
362 int ret = m5mols_write(sd, SYSTEM_SYSMODE, mode);
363 if (ret < 0)
364 return ret;
365 return m5mols_busy_wait(sd, SYSTEM_SYSMODE, mode, 0xff,
366 M5MOLS_MODE_CHANGE_TIMEOUT);
367}
368
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377
378int m5mols_set_mode(struct m5mols_info *info, u8 mode)
379{
380 struct v4l2_subdev *sd = &info->sd;
381 int ret = -EINVAL;
382 u8 reg;
383
384 if (mode < REG_PARAMETER || mode > REG_CAPTURE)
385 return ret;
386
387 ret = m5mols_read_u8(sd, SYSTEM_SYSMODE, ®);
388 if (ret || reg == mode)
389 return ret;
390
391 switch (reg) {
392 case REG_PARAMETER:
393 ret = m5mols_reg_mode(sd, REG_MONITOR);
394 if (mode == REG_MONITOR)
395 break;
396 if (!ret)
397 ret = m5mols_reg_mode(sd, REG_CAPTURE);
398 break;
399
400 case REG_MONITOR:
401 if (mode == REG_PARAMETER) {
402 ret = m5mols_reg_mode(sd, REG_PARAMETER);
403 break;
404 }
405
406 ret = m5mols_reg_mode(sd, REG_CAPTURE);
407 break;
408
409 case REG_CAPTURE:
410 ret = m5mols_reg_mode(sd, REG_MONITOR);
411 if (mode == REG_MONITOR)
412 break;
413 if (!ret)
414 ret = m5mols_reg_mode(sd, REG_PARAMETER);
415 break;
416
417 default:
418 v4l2_warn(sd, "Wrong mode: %d\n", mode);
419 }
420
421 if (!ret)
422 info->mode = mode;
423
424 return ret;
425}
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428
429
430
431
432
433
434static int m5mols_get_version(struct v4l2_subdev *sd)
435{
436 struct m5mols_info *info = to_m5mols(sd);
437 struct m5mols_version *ver = &info->ver;
438 u8 *str = ver->str;
439 int i;
440 int ret;
441
442 ret = m5mols_read_u8(sd, SYSTEM_VER_CUSTOMER, &ver->customer);
443 if (!ret)
444 ret = m5mols_read_u8(sd, SYSTEM_VER_PROJECT, &ver->project);
445 if (!ret)
446 ret = m5mols_read_u16(sd, SYSTEM_VER_FIRMWARE, &ver->fw);
447 if (!ret)
448 ret = m5mols_read_u16(sd, SYSTEM_VER_HARDWARE, &ver->hw);
449 if (!ret)
450 ret = m5mols_read_u16(sd, SYSTEM_VER_PARAMETER, &ver->param);
451 if (!ret)
452 ret = m5mols_read_u16(sd, SYSTEM_VER_AWB, &ver->awb);
453 if (!ret)
454 ret = m5mols_read_u8(sd, AF_VERSION, &ver->af);
455 if (ret)
456 return ret;
457
458 for (i = 0; i < VERSION_STRING_SIZE; i++) {
459 ret = m5mols_read_u8(sd, SYSTEM_VER_STRING, &str[i]);
460 if (ret)
461 return ret;
462 }
463
464 v4l2_info(sd, "Manufacturer\t[%s]\n",
465 is_manufacturer(info, REG_SAMSUNG_ELECTRO) ?
466 "Samsung Electro-Mechanics" :
467 is_manufacturer(info, REG_SAMSUNG_OPTICS) ?
468 "Samsung Fiber-Optics" :
469 is_manufacturer(info, REG_SAMSUNG_TECHWIN) ?
470 "Samsung Techwin" : "None");
471 v4l2_info(sd, "Customer/Project\t[0x%02x/0x%02x]\n",
472 info->ver.customer, info->ver.project);
473
474 if (!is_available_af(info))
475 v4l2_info(sd, "No support Auto Focus on this firmware\n");
476
477 return ret;
478}
479
480
481
482
483
484static enum m5mols_restype __find_restype(u32 code)
485{
486 enum m5mols_restype type = M5MOLS_RESTYPE_MONITOR;
487
488 do {
489 if (code == m5mols_default_ffmt[type].code)
490 return type;
491 } while (type++ != SIZE_DEFAULT_FFMT);
492
493 return 0;
494}
495
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505
506static int __find_resolution(struct v4l2_subdev *sd,
507 struct v4l2_mbus_framefmt *mf,
508 enum m5mols_restype *type,
509 u32 *resolution)
510{
511 const struct m5mols_resolution *fsize = &m5mols_reg_res[0];
512 const struct m5mols_resolution *match = NULL;
513 enum m5mols_restype stype = __find_restype(mf->code);
514 int i = ARRAY_SIZE(m5mols_reg_res);
515 unsigned int min_err = ~0;
516
517 while (i--) {
518 int err;
519 if (stype == fsize->type) {
520 err = abs(fsize->width - mf->width)
521 + abs(fsize->height - mf->height);
522
523 if (err < min_err) {
524 min_err = err;
525 match = fsize;
526 }
527 }
528 fsize++;
529 }
530 if (match) {
531 mf->width = match->width;
532 mf->height = match->height;
533 *resolution = match->reg;
534 *type = stype;
535 return 0;
536 }
537
538 return -EINVAL;
539}
540
541static struct v4l2_mbus_framefmt *__find_format(struct m5mols_info *info,
542 struct v4l2_subdev_state *sd_state,
543 enum v4l2_subdev_format_whence which,
544 enum m5mols_restype type)
545{
546 if (which == V4L2_SUBDEV_FORMAT_TRY)
547 return sd_state ? v4l2_subdev_get_try_format(&info->sd,
548 sd_state, 0) : NULL;
549
550 return &info->ffmt[type];
551}
552
553static int m5mols_get_fmt(struct v4l2_subdev *sd,
554 struct v4l2_subdev_state *sd_state,
555 struct v4l2_subdev_format *fmt)
556{
557 struct m5mols_info *info = to_m5mols(sd);
558 struct v4l2_mbus_framefmt *format;
559 int ret = 0;
560
561 mutex_lock(&info->lock);
562
563 format = __find_format(info, sd_state, fmt->which, info->res_type);
564 if (format)
565 fmt->format = *format;
566 else
567 ret = -EINVAL;
568
569 mutex_unlock(&info->lock);
570 return ret;
571}
572
573static int m5mols_set_fmt(struct v4l2_subdev *sd,
574 struct v4l2_subdev_state *sd_state,
575 struct v4l2_subdev_format *fmt)
576{
577 struct m5mols_info *info = to_m5mols(sd);
578 struct v4l2_mbus_framefmt *format = &fmt->format;
579 struct v4l2_mbus_framefmt *sfmt;
580 enum m5mols_restype type;
581 u32 resolution = 0;
582 int ret;
583
584 ret = __find_resolution(sd, format, &type, &resolution);
585 if (ret < 0)
586 return ret;
587
588 sfmt = __find_format(info, sd_state, fmt->which, type);
589 if (!sfmt)
590 return 0;
591
592 mutex_lock(&info->lock);
593
594 format->code = m5mols_default_ffmt[type].code;
595 format->colorspace = V4L2_COLORSPACE_JPEG;
596 format->field = V4L2_FIELD_NONE;
597
598 if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
599 *sfmt = *format;
600 info->resolution = resolution;
601 info->res_type = type;
602 }
603
604 mutex_unlock(&info->lock);
605 return ret;
606}
607
608static int m5mols_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
609 struct v4l2_mbus_frame_desc *fd)
610{
611 struct m5mols_info *info = to_m5mols(sd);
612
613 if (pad != 0 || fd == NULL)
614 return -EINVAL;
615
616 mutex_lock(&info->lock);
617
618
619
620
621 fd->entry[0].length = info->cap.buf_size;
622 fd->entry[0].pixelcode = info->ffmt[M5MOLS_RESTYPE_CAPTURE].code;
623 mutex_unlock(&info->lock);
624
625 fd->entry[0].flags = V4L2_MBUS_FRAME_DESC_FL_LEN_MAX;
626 fd->num_entries = 1;
627
628 return 0;
629}
630
631static int m5mols_set_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
632 struct v4l2_mbus_frame_desc *fd)
633{
634 struct m5mols_info *info = to_m5mols(sd);
635 struct v4l2_mbus_framefmt *mf = &info->ffmt[M5MOLS_RESTYPE_CAPTURE];
636
637 if (pad != 0 || fd == NULL)
638 return -EINVAL;
639
640 fd->entry[0].flags = V4L2_MBUS_FRAME_DESC_FL_LEN_MAX;
641 fd->num_entries = 1;
642 fd->entry[0].length = clamp_t(u32, fd->entry[0].length,
643 mf->width * mf->height,
644 M5MOLS_MAIN_JPEG_SIZE_MAX);
645 mutex_lock(&info->lock);
646 info->cap.buf_size = fd->entry[0].length;
647 mutex_unlock(&info->lock);
648
649 return 0;
650}
651
652
653static int m5mols_enum_mbus_code(struct v4l2_subdev *sd,
654 struct v4l2_subdev_state *sd_state,
655 struct v4l2_subdev_mbus_code_enum *code)
656{
657 if (!code || code->index >= SIZE_DEFAULT_FFMT)
658 return -EINVAL;
659
660 code->code = m5mols_default_ffmt[code->index].code;
661
662 return 0;
663}
664
665static const struct v4l2_subdev_pad_ops m5mols_pad_ops = {
666 .enum_mbus_code = m5mols_enum_mbus_code,
667 .get_fmt = m5mols_get_fmt,
668 .set_fmt = m5mols_set_fmt,
669 .get_frame_desc = m5mols_get_frame_desc,
670 .set_frame_desc = m5mols_set_frame_desc,
671};
672
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675
676
677
678
679
680
681int m5mols_restore_controls(struct m5mols_info *info)
682{
683 int ret;
684
685 if (info->ctrl_sync)
686 return 0;
687
688 ret = m5mols_do_scenemode(info, REG_SCENE_NORMAL);
689 if (ret)
690 return ret;
691
692 ret = v4l2_ctrl_handler_setup(&info->handle);
693 info->ctrl_sync = !ret;
694
695 return ret;
696}
697
698
699
700
701
702
703
704
705static int m5mols_start_monitor(struct m5mols_info *info)
706{
707 struct v4l2_subdev *sd = &info->sd;
708 int ret;
709
710 ret = m5mols_set_mode(info, REG_PARAMETER);
711 if (!ret)
712 ret = m5mols_write(sd, PARM_MON_SIZE, info->resolution);
713 if (!ret)
714 ret = m5mols_write(sd, PARM_MON_FPS, REG_FPS_30);
715 if (!ret)
716 ret = m5mols_set_mode(info, REG_MONITOR);
717 if (!ret)
718 ret = m5mols_restore_controls(info);
719
720 return ret;
721}
722
723static int m5mols_s_stream(struct v4l2_subdev *sd, int enable)
724{
725 struct m5mols_info *info = to_m5mols(sd);
726 u32 code;
727 int ret;
728
729 mutex_lock(&info->lock);
730 code = info->ffmt[info->res_type].code;
731
732 if (enable) {
733 if (is_code(code, M5MOLS_RESTYPE_MONITOR))
734 ret = m5mols_start_monitor(info);
735 else if (is_code(code, M5MOLS_RESTYPE_CAPTURE))
736 ret = m5mols_start_capture(info);
737 else
738 ret = -EINVAL;
739 } else {
740 ret = m5mols_set_mode(info, REG_PARAMETER);
741 }
742
743 mutex_unlock(&info->lock);
744 return ret;
745}
746
747static const struct v4l2_subdev_video_ops m5mols_video_ops = {
748 .s_stream = m5mols_s_stream,
749};
750
751static int m5mols_sensor_power(struct m5mols_info *info, bool enable)
752{
753 struct v4l2_subdev *sd = &info->sd;
754 struct i2c_client *client = v4l2_get_subdevdata(sd);
755 const struct m5mols_platform_data *pdata = info->pdata;
756 int ret;
757
758 if (info->power == enable)
759 return 0;
760
761 if (enable) {
762 if (info->set_power) {
763 ret = info->set_power(&client->dev, 1);
764 if (ret)
765 return ret;
766 }
767
768 ret = regulator_bulk_enable(ARRAY_SIZE(supplies), supplies);
769 if (ret) {
770 if (info->set_power)
771 info->set_power(&client->dev, 0);
772 return ret;
773 }
774
775 gpio_set_value(pdata->gpio_reset, !pdata->reset_polarity);
776 info->power = 1;
777
778 return ret;
779 }
780
781 ret = regulator_bulk_disable(ARRAY_SIZE(supplies), supplies);
782 if (ret)
783 return ret;
784
785 if (info->set_power)
786 info->set_power(&client->dev, 0);
787
788 gpio_set_value(pdata->gpio_reset, pdata->reset_polarity);
789
790 info->isp_ready = 0;
791 info->power = 0;
792
793 return ret;
794}
795
796
797int __attribute__ ((weak)) m5mols_update_fw(struct v4l2_subdev *sd,
798 int (*set_power)(struct m5mols_info *, bool))
799{
800 return 0;
801}
802
803
804
805
806
807
808
809
810
811static int m5mols_fw_start(struct v4l2_subdev *sd)
812{
813 struct m5mols_info *info = to_m5mols(sd);
814 int ret;
815
816 atomic_set(&info->irq_done, 0);
817
818 ret = m5mols_busy_wait(sd, FLASH_CAM_START, REG_IN_FLASH_MODE,
819 M5MOLS_I2C_RDY_WAIT_FL | 0xff, -1);
820 if (!ret)
821 ret = m5mols_write(sd, FLASH_CAM_START, REG_START_ARM_BOOT);
822 if (!ret)
823 ret = m5mols_wait_interrupt(sd, REG_INT_MODE, 2000);
824 if (ret < 0)
825 return ret;
826
827 info->isp_ready = 1;
828
829 ret = m5mols_get_version(sd);
830 if (!ret)
831 ret = m5mols_update_fw(sd, m5mols_sensor_power);
832 if (ret)
833 return ret;
834
835 v4l2_dbg(1, m5mols_debug, sd, "Success ARM Booting\n");
836
837 ret = m5mols_write(sd, PARM_INTERFACE, REG_INTERFACE_MIPI);
838 if (!ret)
839 ret = m5mols_enable_interrupt(sd,
840 REG_INT_AF | REG_INT_CAPTURE);
841
842 return ret;
843}
844
845
846static int m5mols_auto_focus_stop(struct m5mols_info *info)
847{
848 int ret;
849
850 ret = m5mols_write(&info->sd, AF_EXECUTE, REG_AF_STOP);
851 if (!ret)
852 ret = m5mols_write(&info->sd, AF_MODE, REG_AF_POWEROFF);
853 if (!ret)
854 ret = m5mols_busy_wait(&info->sd, SYSTEM_STATUS, REG_AF_IDLE,
855 0xff, -1);
856 return ret;
857}
858
859
860
861
862
863
864
865
866
867
868static int m5mols_s_power(struct v4l2_subdev *sd, int on)
869{
870 struct m5mols_info *info = to_m5mols(sd);
871 int ret;
872
873 mutex_lock(&info->lock);
874
875 if (on) {
876 ret = m5mols_sensor_power(info, true);
877 if (!ret)
878 ret = m5mols_fw_start(sd);
879 } else {
880 if (is_manufacturer(info, REG_SAMSUNG_TECHWIN)) {
881 ret = m5mols_set_mode(info, REG_MONITOR);
882 if (!ret)
883 ret = m5mols_auto_focus_stop(info);
884 if (ret < 0)
885 v4l2_warn(sd, "Soft landing lens failed\n");
886 }
887 ret = m5mols_sensor_power(info, false);
888
889 info->ctrl_sync = 0;
890 }
891
892 mutex_unlock(&info->lock);
893 return ret;
894}
895
896static int m5mols_log_status(struct v4l2_subdev *sd)
897{
898 struct m5mols_info *info = to_m5mols(sd);
899
900 v4l2_ctrl_handler_log_status(&info->handle, sd->name);
901
902 return 0;
903}
904
905static const struct v4l2_subdev_core_ops m5mols_core_ops = {
906 .s_power = m5mols_s_power,
907 .log_status = m5mols_log_status,
908};
909
910
911
912
913static int m5mols_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
914{
915 struct v4l2_mbus_framefmt *format = v4l2_subdev_get_try_format(sd,
916 fh->state,
917 0);
918
919 *format = m5mols_default_ffmt[0];
920 return 0;
921}
922
923static const struct v4l2_subdev_internal_ops m5mols_subdev_internal_ops = {
924 .open = m5mols_open,
925};
926
927static const struct v4l2_subdev_ops m5mols_ops = {
928 .core = &m5mols_core_ops,
929 .pad = &m5mols_pad_ops,
930 .video = &m5mols_video_ops,
931};
932
933static irqreturn_t m5mols_irq_handler(int irq, void *data)
934{
935 struct m5mols_info *info = to_m5mols(data);
936
937 atomic_set(&info->irq_done, 1);
938 wake_up_interruptible(&info->irq_waitq);
939
940 return IRQ_HANDLED;
941}
942
943static int m5mols_probe(struct i2c_client *client,
944 const struct i2c_device_id *id)
945{
946 const struct m5mols_platform_data *pdata = client->dev.platform_data;
947 unsigned long gpio_flags;
948 struct m5mols_info *info;
949 struct v4l2_subdev *sd;
950 int ret;
951
952 if (pdata == NULL) {
953 dev_err(&client->dev, "No platform data\n");
954 return -EINVAL;
955 }
956
957 if (!gpio_is_valid(pdata->gpio_reset)) {
958 dev_err(&client->dev, "No valid RESET GPIO specified\n");
959 return -EINVAL;
960 }
961
962 if (!client->irq) {
963 dev_err(&client->dev, "Interrupt not assigned\n");
964 return -EINVAL;
965 }
966
967 info = devm_kzalloc(&client->dev, sizeof(*info), GFP_KERNEL);
968 if (!info)
969 return -ENOMEM;
970
971 info->pdata = pdata;
972 info->set_power = pdata->set_power;
973
974 gpio_flags = pdata->reset_polarity
975 ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW;
976 ret = devm_gpio_request_one(&client->dev, pdata->gpio_reset, gpio_flags,
977 "M5MOLS_NRST");
978 if (ret) {
979 dev_err(&client->dev, "Failed to request gpio: %d\n", ret);
980 return ret;
981 }
982
983 ret = devm_regulator_bulk_get(&client->dev, ARRAY_SIZE(supplies),
984 supplies);
985 if (ret) {
986 dev_err(&client->dev, "Failed to get regulators: %d\n", ret);
987 return ret;
988 }
989
990 sd = &info->sd;
991 v4l2_i2c_subdev_init(sd, client, &m5mols_ops);
992
993 strscpy(sd->name, MODULE_NAME, sizeof(sd->name));
994 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
995
996 sd->internal_ops = &m5mols_subdev_internal_ops;
997 info->pad.flags = MEDIA_PAD_FL_SOURCE;
998 ret = media_entity_pads_init(&sd->entity, 1, &info->pad);
999 if (ret < 0)
1000 return ret;
1001 sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
1002
1003 init_waitqueue_head(&info->irq_waitq);
1004 mutex_init(&info->lock);
1005
1006 ret = devm_request_irq(&client->dev, client->irq, m5mols_irq_handler,
1007 IRQF_TRIGGER_RISING, MODULE_NAME, sd);
1008 if (ret) {
1009 dev_err(&client->dev, "Interrupt request failed: %d\n", ret);
1010 goto error;
1011 }
1012 info->res_type = M5MOLS_RESTYPE_MONITOR;
1013 info->ffmt[0] = m5mols_default_ffmt[0];
1014 info->ffmt[1] = m5mols_default_ffmt[1];
1015
1016 ret = m5mols_sensor_power(info, true);
1017 if (ret)
1018 goto error;
1019
1020 ret = m5mols_fw_start(sd);
1021 if (!ret)
1022 ret = m5mols_init_controls(sd);
1023
1024 ret = m5mols_sensor_power(info, false);
1025 if (!ret)
1026 return 0;
1027error:
1028 media_entity_cleanup(&sd->entity);
1029 return ret;
1030}
1031
1032static int m5mols_remove(struct i2c_client *client)
1033{
1034 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1035
1036 v4l2_device_unregister_subdev(sd);
1037 v4l2_ctrl_handler_free(sd->ctrl_handler);
1038 media_entity_cleanup(&sd->entity);
1039
1040 return 0;
1041}
1042
1043static const struct i2c_device_id m5mols_id[] = {
1044 { MODULE_NAME, 0 },
1045 { },
1046};
1047MODULE_DEVICE_TABLE(i2c, m5mols_id);
1048
1049static struct i2c_driver m5mols_i2c_driver = {
1050 .driver = {
1051 .name = MODULE_NAME,
1052 },
1053 .probe = m5mols_probe,
1054 .remove = m5mols_remove,
1055 .id_table = m5mols_id,
1056};
1057
1058module_i2c_driver(m5mols_i2c_driver);
1059
1060MODULE_AUTHOR("HeungJun Kim <riverful.kim@samsung.com>");
1061MODULE_AUTHOR("Dongsoo Kim <dongsoo45.kim@samsung.com>");
1062MODULE_DESCRIPTION("Fujitsu M-5MOLS 8M Pixel camera driver");
1063MODULE_LICENSE("GPL");
1064