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18#include <linux/module.h>
19#include <linux/types.h>
20#include <linux/kernel.h>
21#include <linux/mm.h>
22#include <linux/string.h>
23#include <linux/errno.h>
24#include <linux/init.h>
25#include <linux/kmod.h>
26#include <linux/device.h>
27#include <linux/delay.h>
28#include <linux/slab.h>
29#include <linux/i2c.h>
30#include <linux/moduleparam.h>
31#include <media/v4l2-device.h>
32#include <linux/io.h>
33#include "../include/linux/atomisp_gmin_platform.h"
34
35#include "gc0310.h"
36
37
38static int gc0310_read_reg(struct i2c_client *client,
39 u16 data_length, u8 reg, u8 *val)
40{
41 int err;
42 struct i2c_msg msg[2];
43 unsigned char data[1];
44
45 if (!client->adapter) {
46 dev_err(&client->dev, "%s error, no client->adapter\n",
47 __func__);
48 return -ENODEV;
49 }
50
51 if (data_length != GC0310_8BIT) {
52 dev_err(&client->dev, "%s error, invalid data length\n",
53 __func__);
54 return -EINVAL;
55 }
56
57 memset(msg, 0, sizeof(msg));
58
59 msg[0].addr = client->addr;
60 msg[0].flags = 0;
61 msg[0].len = I2C_MSG_LENGTH;
62 msg[0].buf = data;
63
64
65 data[0] = (u8)(reg & 0xff);
66
67 msg[1].addr = client->addr;
68 msg[1].len = data_length;
69 msg[1].flags = I2C_M_RD;
70 msg[1].buf = data;
71
72 err = i2c_transfer(client->adapter, msg, 2);
73 if (err != 2) {
74 if (err >= 0)
75 err = -EIO;
76 dev_err(&client->dev,
77 "read from offset 0x%x error %d", reg, err);
78 return err;
79 }
80
81 *val = 0;
82
83 if (data_length == GC0310_8BIT)
84 *val = (u8)data[0];
85
86 return 0;
87}
88
89static int gc0310_i2c_write(struct i2c_client *client, u16 len, u8 *data)
90{
91 struct i2c_msg msg;
92 const int num_msg = 1;
93 int ret;
94
95 msg.addr = client->addr;
96 msg.flags = 0;
97 msg.len = len;
98 msg.buf = data;
99 ret = i2c_transfer(client->adapter, &msg, 1);
100
101 return ret == num_msg ? 0 : -EIO;
102}
103
104static int gc0310_write_reg(struct i2c_client *client, u16 data_length,
105 u8 reg, u8 val)
106{
107 int ret;
108 unsigned char data[2] = {0};
109 u8 *wreg = (u8 *)data;
110 const u16 len = data_length + sizeof(u8);
111
112 if (data_length != GC0310_8BIT) {
113 dev_err(&client->dev,
114 "%s error, invalid data_length\n", __func__);
115 return -EINVAL;
116 }
117
118
119 *wreg = (u8)(reg & 0xff);
120
121 if (data_length == GC0310_8BIT)
122 data[1] = (u8)(val);
123
124 ret = gc0310_i2c_write(client, len, data);
125 if (ret)
126 dev_err(&client->dev,
127 "write error: wrote 0x%x to offset 0x%x error %d",
128 val, reg, ret);
129
130 return ret;
131}
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148static int __gc0310_flush_reg_array(struct i2c_client *client,
149 struct gc0310_write_ctrl *ctrl)
150{
151 u16 size;
152
153 if (ctrl->index == 0)
154 return 0;
155
156 size = sizeof(u8) + ctrl->index;
157 ctrl->buffer.addr = (u8)(ctrl->buffer.addr);
158 ctrl->index = 0;
159
160 return gc0310_i2c_write(client, size, (u8 *)&ctrl->buffer);
161}
162
163static int __gc0310_buf_reg_array(struct i2c_client *client,
164 struct gc0310_write_ctrl *ctrl,
165 const struct gc0310_reg *next)
166{
167 int size;
168
169 switch (next->type) {
170 case GC0310_8BIT:
171 size = 1;
172 ctrl->buffer.data[ctrl->index] = (u8)next->val;
173 break;
174 default:
175 return -EINVAL;
176 }
177
178
179 if (ctrl->index == 0)
180 ctrl->buffer.addr = next->reg;
181
182 ctrl->index += size;
183
184
185
186
187
188 if (ctrl->index + sizeof(u8) >= GC0310_MAX_WRITE_BUF_SIZE)
189 return __gc0310_flush_reg_array(client, ctrl);
190
191 return 0;
192}
193
194static int __gc0310_write_reg_is_consecutive(struct i2c_client *client,
195 struct gc0310_write_ctrl *ctrl,
196 const struct gc0310_reg *next)
197{
198 if (ctrl->index == 0)
199 return 1;
200
201 return ctrl->buffer.addr + ctrl->index == next->reg;
202}
203
204static int gc0310_write_reg_array(struct i2c_client *client,
205 const struct gc0310_reg *reglist)
206{
207 const struct gc0310_reg *next = reglist;
208 struct gc0310_write_ctrl ctrl;
209 int err;
210
211 ctrl.index = 0;
212 for (; next->type != GC0310_TOK_TERM; next++) {
213 switch (next->type & GC0310_TOK_MASK) {
214 case GC0310_TOK_DELAY:
215 err = __gc0310_flush_reg_array(client, &ctrl);
216 if (err)
217 return err;
218 msleep(next->val);
219 break;
220 default:
221
222
223
224
225 if (!__gc0310_write_reg_is_consecutive(client, &ctrl,
226 next)) {
227 err = __gc0310_flush_reg_array(client, &ctrl);
228 if (err)
229 return err;
230 }
231 err = __gc0310_buf_reg_array(client, &ctrl, next);
232 if (err) {
233 dev_err(&client->dev, "%s: write error, aborted\n",
234 __func__);
235 return err;
236 }
237 break;
238 }
239 }
240
241 return __gc0310_flush_reg_array(client, &ctrl);
242}
243
244static int gc0310_g_focal(struct v4l2_subdev *sd, s32 *val)
245{
246 *val = (GC0310_FOCAL_LENGTH_NUM << 16) | GC0310_FOCAL_LENGTH_DEM;
247 return 0;
248}
249
250static int gc0310_g_fnumber(struct v4l2_subdev *sd, s32 *val)
251{
252
253 *val = (GC0310_F_NUMBER_DEFAULT_NUM << 16) | GC0310_F_NUMBER_DEM;
254 return 0;
255}
256
257static int gc0310_g_fnumber_range(struct v4l2_subdev *sd, s32 *val)
258{
259 *val = (GC0310_F_NUMBER_DEFAULT_NUM << 24) |
260 (GC0310_F_NUMBER_DEM << 16) |
261 (GC0310_F_NUMBER_DEFAULT_NUM << 8) | GC0310_F_NUMBER_DEM;
262 return 0;
263}
264
265static int gc0310_g_bin_factor_x(struct v4l2_subdev *sd, s32 *val)
266{
267 struct gc0310_device *dev = to_gc0310_sensor(sd);
268
269 *val = gc0310_res[dev->fmt_idx].bin_factor_x;
270
271 return 0;
272}
273
274static int gc0310_g_bin_factor_y(struct v4l2_subdev *sd, s32 *val)
275{
276 struct gc0310_device *dev = to_gc0310_sensor(sd);
277
278 *val = gc0310_res[dev->fmt_idx].bin_factor_y;
279
280 return 0;
281}
282
283static int gc0310_get_intg_factor(struct i2c_client *client,
284 struct camera_mipi_info *info,
285 const struct gc0310_resolution *res)
286{
287 struct v4l2_subdev *sd = i2c_get_clientdata(client);
288 struct gc0310_device *dev = to_gc0310_sensor(sd);
289 struct atomisp_sensor_mode_data *buf = &info->data;
290 u16 val;
291 u8 reg_val;
292 int ret;
293 unsigned int hori_blanking;
294 unsigned int vert_blanking;
295 unsigned int sh_delay;
296
297 if (!info)
298 return -EINVAL;
299
300
301 dev->vt_pix_clk_freq_mhz = 14400000;
302 buf->vt_pix_clk_freq_mhz = dev->vt_pix_clk_freq_mhz;
303 dev_dbg(&client->dev, "vt_pix_clk_freq_mhz=%d\n", buf->vt_pix_clk_freq_mhz);
304
305
306 buf->coarse_integration_time_min = GC0310_COARSE_INTG_TIME_MIN;
307 buf->coarse_integration_time_max_margin =
308 GC0310_COARSE_INTG_TIME_MAX_MARGIN;
309
310 buf->fine_integration_time_min = GC0310_FINE_INTG_TIME_MIN;
311 buf->fine_integration_time_max_margin =
312 GC0310_FINE_INTG_TIME_MAX_MARGIN;
313
314 buf->fine_integration_time_def = GC0310_FINE_INTG_TIME_MIN;
315 buf->read_mode = res->bin_mode;
316
317
318
319 ret = gc0310_read_reg(client, GC0310_8BIT,
320 GC0310_H_CROP_START_H, ®_val);
321 if (ret)
322 return ret;
323 val = (reg_val & 0xFF) << 8;
324 ret = gc0310_read_reg(client, GC0310_8BIT,
325 GC0310_H_CROP_START_L, ®_val);
326 if (ret)
327 return ret;
328 buf->crop_horizontal_start = val | (reg_val & 0xFF);
329 dev_dbg(&client->dev, "crop_horizontal_start=%d\n", buf->crop_horizontal_start);
330
331
332 ret = gc0310_read_reg(client, GC0310_8BIT,
333 GC0310_V_CROP_START_H, ®_val);
334 if (ret)
335 return ret;
336 val = (reg_val & 0xFF) << 8;
337 ret = gc0310_read_reg(client, GC0310_8BIT,
338 GC0310_V_CROP_START_L, ®_val);
339 if (ret)
340 return ret;
341 buf->crop_vertical_start = val | (reg_val & 0xFF);
342 dev_dbg(&client->dev, "crop_vertical_start=%d\n", buf->crop_vertical_start);
343
344
345 ret = gc0310_read_reg(client, GC0310_8BIT,
346 GC0310_H_OUTSIZE_H, ®_val);
347 if (ret)
348 return ret;
349 val = (reg_val & 0xFF) << 8;
350 ret = gc0310_read_reg(client, GC0310_8BIT,
351 GC0310_H_OUTSIZE_L, ®_val);
352 if (ret)
353 return ret;
354 buf->output_width = val | (reg_val & 0xFF);
355 dev_dbg(&client->dev, "output_width=%d\n", buf->output_width);
356
357
358 ret = gc0310_read_reg(client, GC0310_8BIT,
359 GC0310_V_OUTSIZE_H, ®_val);
360 if (ret)
361 return ret;
362 val = (reg_val & 0xFF) << 8;
363 ret = gc0310_read_reg(client, GC0310_8BIT,
364 GC0310_V_OUTSIZE_L, ®_val);
365 if (ret)
366 return ret;
367 buf->output_height = val | (reg_val & 0xFF);
368 dev_dbg(&client->dev, "output_height=%d\n", buf->output_height);
369
370 buf->crop_horizontal_end = buf->crop_horizontal_start + buf->output_width - 1;
371 buf->crop_vertical_end = buf->crop_vertical_start + buf->output_height - 1;
372 dev_dbg(&client->dev, "crop_horizontal_end=%d\n", buf->crop_horizontal_end);
373 dev_dbg(&client->dev, "crop_vertical_end=%d\n", buf->crop_vertical_end);
374
375
376 ret = gc0310_read_reg(client, GC0310_8BIT,
377 GC0310_H_BLANKING_H, ®_val);
378 if (ret)
379 return ret;
380 val = (reg_val & 0xFF) << 8;
381 ret = gc0310_read_reg(client, GC0310_8BIT,
382 GC0310_H_BLANKING_L, ®_val);
383 if (ret)
384 return ret;
385 hori_blanking = val | (reg_val & 0xFF);
386 ret = gc0310_read_reg(client, GC0310_8BIT,
387 GC0310_SH_DELAY, ®_val);
388 if (ret)
389 return ret;
390 sh_delay = reg_val;
391 buf->line_length_pck = buf->output_width + hori_blanking + sh_delay + 4;
392 dev_dbg(&client->dev, "hori_blanking=%d sh_delay=%d line_length_pck=%d\n", hori_blanking,
393 sh_delay, buf->line_length_pck);
394
395
396 ret = gc0310_read_reg(client, GC0310_8BIT,
397 GC0310_V_BLANKING_H, ®_val);
398 if (ret)
399 return ret;
400 val = (reg_val & 0xFF) << 8;
401 ret = gc0310_read_reg(client, GC0310_8BIT,
402 GC0310_V_BLANKING_L, ®_val);
403 if (ret)
404 return ret;
405 vert_blanking = val | (reg_val & 0xFF);
406 buf->frame_length_lines = buf->output_height + vert_blanking;
407 dev_dbg(&client->dev, "vert_blanking=%d frame_length_lines=%d\n", vert_blanking,
408 buf->frame_length_lines);
409
410 buf->binning_factor_x = res->bin_factor_x ?
411 res->bin_factor_x : 1;
412 buf->binning_factor_y = res->bin_factor_y ?
413 res->bin_factor_y : 1;
414 return 0;
415}
416
417static int gc0310_set_gain(struct v4l2_subdev *sd, int gain)
418
419{
420 struct i2c_client *client = v4l2_get_subdevdata(sd);
421 int ret;
422 u8 again, dgain;
423
424 if (gain < 0x20)
425 gain = 0x20;
426 if (gain > 0x80)
427 gain = 0x80;
428
429 if (gain >= 0x20 && gain < 0x40) {
430 again = 0x0;
431 dgain = gain;
432 } else {
433 again = 0x2;
434 dgain = gain / 2;
435 }
436
437 dev_dbg(&client->dev, "gain=0x%x again=0x%x dgain=0x%x\n", gain, again, dgain);
438
439
440 ret = gc0310_write_reg(client, GC0310_8BIT,
441 GC0310_AGC_ADJ, again);
442 if (ret)
443 return ret;
444
445
446 ret = gc0310_write_reg(client, GC0310_8BIT,
447 GC0310_DGC_ADJ, dgain);
448 if (ret)
449 return ret;
450
451 return 0;
452}
453
454static int __gc0310_set_exposure(struct v4l2_subdev *sd, int coarse_itg,
455 int gain, int digitgain)
456
457{
458 struct i2c_client *client = v4l2_get_subdevdata(sd);
459 int ret;
460
461 dev_dbg(&client->dev, "coarse_itg=%d gain=%d digitgain=%d\n", coarse_itg, gain, digitgain);
462
463
464 ret = gc0310_write_reg(client, GC0310_8BIT,
465 GC0310_AEC_PK_EXPO_L,
466 coarse_itg & 0xff);
467 if (ret)
468 return ret;
469
470 ret = gc0310_write_reg(client, GC0310_8BIT,
471 GC0310_AEC_PK_EXPO_H,
472 (coarse_itg >> 8) & 0x0f);
473 if (ret)
474 return ret;
475
476 ret = gc0310_set_gain(sd, gain);
477 if (ret)
478 return ret;
479
480 return ret;
481}
482
483static int gc0310_set_exposure(struct v4l2_subdev *sd, int exposure,
484 int gain, int digitgain)
485{
486 struct gc0310_device *dev = to_gc0310_sensor(sd);
487 int ret;
488
489 mutex_lock(&dev->input_lock);
490 ret = __gc0310_set_exposure(sd, exposure, gain, digitgain);
491 mutex_unlock(&dev->input_lock);
492
493 return ret;
494}
495
496static long gc0310_s_exposure(struct v4l2_subdev *sd,
497 struct atomisp_exposure *exposure)
498{
499 int exp = exposure->integration_time[0];
500 int gain = exposure->gain[0];
501 int digitgain = exposure->gain[1];
502
503
504 if (gain == 0) {
505 struct i2c_client *client = v4l2_get_subdevdata(sd);
506
507 v4l2_err(client, "%s: invalid value\n", __func__);
508 return -EINVAL;
509 }
510
511 return gc0310_set_exposure(sd, exp, gain, digitgain);
512}
513
514
515static int gc0310_v_flip(struct v4l2_subdev *sd, s32 value)
516{
517 return 0;
518}
519
520
521static int gc0310_h_flip(struct v4l2_subdev *sd, s32 value)
522{
523 return 0;
524}
525
526static long gc0310_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
527{
528 switch (cmd) {
529 case ATOMISP_IOC_S_EXPOSURE:
530 return gc0310_s_exposure(sd, arg);
531 default:
532 return -EINVAL;
533 }
534 return 0;
535}
536
537
538
539
540static int gc0310_q_exposure(struct v4l2_subdev *sd, s32 *value)
541{
542 struct i2c_client *client = v4l2_get_subdevdata(sd);
543 u8 reg_v;
544 int ret;
545
546
547 ret = gc0310_read_reg(client, GC0310_8BIT,
548 GC0310_AEC_PK_EXPO_L,
549 ®_v);
550 if (ret)
551 goto err;
552
553 *value = reg_v;
554 ret = gc0310_read_reg(client, GC0310_8BIT,
555 GC0310_AEC_PK_EXPO_H,
556 ®_v);
557 if (ret)
558 goto err;
559
560 *value = *value + (reg_v << 8);
561err:
562 return ret;
563}
564
565static int gc0310_s_ctrl(struct v4l2_ctrl *ctrl)
566{
567 struct gc0310_device *dev =
568 container_of(ctrl->handler, struct gc0310_device, ctrl_handler);
569 struct i2c_client *client = v4l2_get_subdevdata(&dev->sd);
570 int ret = 0;
571
572 switch (ctrl->id) {
573 case V4L2_CID_VFLIP:
574 dev_dbg(&client->dev, "%s: CID_VFLIP:%d.\n",
575 __func__, ctrl->val);
576 ret = gc0310_v_flip(&dev->sd, ctrl->val);
577 break;
578 case V4L2_CID_HFLIP:
579 dev_dbg(&client->dev, "%s: CID_HFLIP:%d.\n",
580 __func__, ctrl->val);
581 ret = gc0310_h_flip(&dev->sd, ctrl->val);
582 break;
583 default:
584 ret = -EINVAL;
585 }
586 return ret;
587}
588
589static int gc0310_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
590{
591 struct gc0310_device *dev =
592 container_of(ctrl->handler, struct gc0310_device, ctrl_handler);
593 int ret = 0;
594
595 switch (ctrl->id) {
596 case V4L2_CID_EXPOSURE_ABSOLUTE:
597 ret = gc0310_q_exposure(&dev->sd, &ctrl->val);
598 break;
599 case V4L2_CID_FOCAL_ABSOLUTE:
600 ret = gc0310_g_focal(&dev->sd, &ctrl->val);
601 break;
602 case V4L2_CID_FNUMBER_ABSOLUTE:
603 ret = gc0310_g_fnumber(&dev->sd, &ctrl->val);
604 break;
605 case V4L2_CID_FNUMBER_RANGE:
606 ret = gc0310_g_fnumber_range(&dev->sd, &ctrl->val);
607 break;
608 case V4L2_CID_BIN_FACTOR_HORZ:
609 ret = gc0310_g_bin_factor_x(&dev->sd, &ctrl->val);
610 break;
611 case V4L2_CID_BIN_FACTOR_VERT:
612 ret = gc0310_g_bin_factor_y(&dev->sd, &ctrl->val);
613 break;
614 default:
615 ret = -EINVAL;
616 }
617
618 return ret;
619}
620
621static const struct v4l2_ctrl_ops ctrl_ops = {
622 .s_ctrl = gc0310_s_ctrl,
623 .g_volatile_ctrl = gc0310_g_volatile_ctrl
624};
625
626static const struct v4l2_ctrl_config gc0310_controls[] = {
627 {
628 .ops = &ctrl_ops,
629 .id = V4L2_CID_EXPOSURE_ABSOLUTE,
630 .type = V4L2_CTRL_TYPE_INTEGER,
631 .name = "exposure",
632 .min = 0x0,
633 .max = 0xffff,
634 .step = 0x01,
635 .def = 0x00,
636 .flags = 0,
637 },
638 {
639 .ops = &ctrl_ops,
640 .id = V4L2_CID_VFLIP,
641 .type = V4L2_CTRL_TYPE_BOOLEAN,
642 .name = "Flip",
643 .min = 0,
644 .max = 1,
645 .step = 1,
646 .def = 0,
647 },
648 {
649 .ops = &ctrl_ops,
650 .id = V4L2_CID_HFLIP,
651 .type = V4L2_CTRL_TYPE_BOOLEAN,
652 .name = "Mirror",
653 .min = 0,
654 .max = 1,
655 .step = 1,
656 .def = 0,
657 },
658 {
659 .ops = &ctrl_ops,
660 .id = V4L2_CID_FOCAL_ABSOLUTE,
661 .type = V4L2_CTRL_TYPE_INTEGER,
662 .name = "focal length",
663 .min = GC0310_FOCAL_LENGTH_DEFAULT,
664 .max = GC0310_FOCAL_LENGTH_DEFAULT,
665 .step = 0x01,
666 .def = GC0310_FOCAL_LENGTH_DEFAULT,
667 .flags = 0,
668 },
669 {
670 .ops = &ctrl_ops,
671 .id = V4L2_CID_FNUMBER_ABSOLUTE,
672 .type = V4L2_CTRL_TYPE_INTEGER,
673 .name = "f-number",
674 .min = GC0310_F_NUMBER_DEFAULT,
675 .max = GC0310_F_NUMBER_DEFAULT,
676 .step = 0x01,
677 .def = GC0310_F_NUMBER_DEFAULT,
678 .flags = 0,
679 },
680 {
681 .ops = &ctrl_ops,
682 .id = V4L2_CID_FNUMBER_RANGE,
683 .type = V4L2_CTRL_TYPE_INTEGER,
684 .name = "f-number range",
685 .min = GC0310_F_NUMBER_RANGE,
686 .max = GC0310_F_NUMBER_RANGE,
687 .step = 0x01,
688 .def = GC0310_F_NUMBER_RANGE,
689 .flags = 0,
690 },
691 {
692 .ops = &ctrl_ops,
693 .id = V4L2_CID_BIN_FACTOR_HORZ,
694 .type = V4L2_CTRL_TYPE_INTEGER,
695 .name = "horizontal binning factor",
696 .min = 0,
697 .max = GC0310_BIN_FACTOR_MAX,
698 .step = 1,
699 .def = 0,
700 .flags = 0,
701 },
702 {
703 .ops = &ctrl_ops,
704 .id = V4L2_CID_BIN_FACTOR_VERT,
705 .type = V4L2_CTRL_TYPE_INTEGER,
706 .name = "vertical binning factor",
707 .min = 0,
708 .max = GC0310_BIN_FACTOR_MAX,
709 .step = 1,
710 .def = 0,
711 .flags = 0,
712 },
713};
714
715static int gc0310_init(struct v4l2_subdev *sd)
716{
717 int ret;
718 struct i2c_client *client = v4l2_get_subdevdata(sd);
719 struct gc0310_device *dev = to_gc0310_sensor(sd);
720
721 mutex_lock(&dev->input_lock);
722
723
724 ret = gc0310_write_reg_array(client, gc0310_reset_register);
725
726
727 gc0310_res = gc0310_res_preview;
728 N_RES = N_RES_PREVIEW;
729
730 mutex_unlock(&dev->input_lock);
731
732 return ret;
733}
734
735static int power_ctrl(struct v4l2_subdev *sd, bool flag)
736{
737 int ret = 0;
738 struct gc0310_device *dev = to_gc0310_sensor(sd);
739
740 if (!dev || !dev->platform_data)
741 return -ENODEV;
742
743 if (flag) {
744
745
746
747
748
749
750
751
752
753 ret |= dev->platform_data->v1p8_ctrl(sd, 1);
754 ret |= dev->platform_data->v2p8_ctrl(sd, 1);
755 usleep_range(10000, 15000);
756 }
757
758 if (!flag || ret) {
759 ret |= dev->platform_data->v1p8_ctrl(sd, 0);
760 ret |= dev->platform_data->v2p8_ctrl(sd, 0);
761 }
762 return ret;
763}
764
765static int gpio_ctrl(struct v4l2_subdev *sd, bool flag)
766{
767 int ret;
768 struct gc0310_device *dev = to_gc0310_sensor(sd);
769
770 if (!dev || !dev->platform_data)
771 return -ENODEV;
772
773
774 if (flag) {
775
776 ret = dev->platform_data->gpio0_ctrl(sd, 0);
777 usleep_range(5000, 10000);
778 ret |= dev->platform_data->gpio0_ctrl(sd, 1);
779 usleep_range(10000, 15000);
780 ret |= dev->platform_data->gpio1_ctrl(sd, 0);
781 usleep_range(10000, 15000);
782 } else {
783 ret = dev->platform_data->gpio1_ctrl(sd, 1);
784 ret |= dev->platform_data->gpio0_ctrl(sd, 0);
785 }
786 return ret;
787}
788
789static int power_down(struct v4l2_subdev *sd);
790
791static int power_up(struct v4l2_subdev *sd)
792{
793 struct gc0310_device *dev = to_gc0310_sensor(sd);
794 struct i2c_client *client = v4l2_get_subdevdata(sd);
795 int ret;
796
797 if (!dev->platform_data) {
798 dev_err(&client->dev,
799 "no camera_sensor_platform_data");
800 return -ENODEV;
801 }
802
803
804 ret = power_ctrl(sd, 1);
805 if (ret)
806 goto fail_power;
807
808
809 ret = dev->platform_data->flisclk_ctrl(sd, 1);
810 if (ret)
811 goto fail_clk;
812
813
814 ret = gpio_ctrl(sd, 1);
815 if (ret) {
816 ret = gpio_ctrl(sd, 1);
817 if (ret)
818 goto fail_gpio;
819 }
820
821 msleep(100);
822
823 return 0;
824
825fail_gpio:
826 dev->platform_data->flisclk_ctrl(sd, 0);
827fail_clk:
828 power_ctrl(sd, 0);
829fail_power:
830 dev_err(&client->dev, "sensor power-up failed\n");
831
832 return ret;
833}
834
835static int power_down(struct v4l2_subdev *sd)
836{
837 struct gc0310_device *dev = to_gc0310_sensor(sd);
838 struct i2c_client *client = v4l2_get_subdevdata(sd);
839 int ret = 0;
840
841 if (!dev->platform_data) {
842 dev_err(&client->dev,
843 "no camera_sensor_platform_data");
844 return -ENODEV;
845 }
846
847
848 ret = gpio_ctrl(sd, 0);
849 if (ret) {
850 ret = gpio_ctrl(sd, 0);
851 if (ret)
852 dev_err(&client->dev, "gpio failed 2\n");
853 }
854
855 ret = dev->platform_data->flisclk_ctrl(sd, 0);
856 if (ret)
857 dev_err(&client->dev, "flisclk failed\n");
858
859
860 ret = power_ctrl(sd, 0);
861 if (ret)
862 dev_err(&client->dev, "vprog failed.\n");
863
864 return ret;
865}
866
867static int gc0310_s_power(struct v4l2_subdev *sd, int on)
868{
869 int ret;
870
871 if (on == 0)
872 return power_down(sd);
873
874 ret = power_up(sd);
875 if (ret)
876 return ret;
877
878 return gc0310_init(sd);
879}
880
881
882
883
884
885
886
887
888
889
890
891#define LARGEST_ALLOWED_RATIO_MISMATCH 800
892static int distance(struct gc0310_resolution *res, u32 w, u32 h)
893{
894 unsigned int w_ratio = (res->width << 13) / w;
895 unsigned int h_ratio;
896 int match;
897
898 if (h == 0)
899 return -1;
900 h_ratio = (res->height << 13) / h;
901 if (h_ratio == 0)
902 return -1;
903 match = abs(((w_ratio << 13) / h_ratio) - 8192);
904
905 if ((w_ratio < 8192) || (h_ratio < 8192) ||
906 (match > LARGEST_ALLOWED_RATIO_MISMATCH))
907 return -1;
908
909 return w_ratio + h_ratio;
910}
911
912
913static int nearest_resolution_index(int w, int h)
914{
915 int i;
916 int idx = -1;
917 int dist;
918 int min_dist = INT_MAX;
919 struct gc0310_resolution *tmp_res = NULL;
920
921 for (i = 0; i < N_RES; i++) {
922 tmp_res = &gc0310_res[i];
923 dist = distance(tmp_res, w, h);
924 if (dist == -1)
925 continue;
926 if (dist < min_dist) {
927 min_dist = dist;
928 idx = i;
929 }
930 }
931
932 return idx;
933}
934
935static int get_resolution_index(int w, int h)
936{
937 int i;
938
939 for (i = 0; i < N_RES; i++) {
940 if (w != gc0310_res[i].width)
941 continue;
942 if (h != gc0310_res[i].height)
943 continue;
944
945 return i;
946 }
947
948 return -1;
949}
950
951
952static int startup(struct v4l2_subdev *sd)
953{
954 struct gc0310_device *dev = to_gc0310_sensor(sd);
955 struct i2c_client *client = v4l2_get_subdevdata(sd);
956 int ret = 0;
957
958 ret = gc0310_write_reg_array(client, gc0310_res[dev->fmt_idx].regs);
959 if (ret) {
960 dev_err(&client->dev, "gc0310 write register err.\n");
961 return ret;
962 }
963
964 return ret;
965}
966
967static int gc0310_set_fmt(struct v4l2_subdev *sd,
968 struct v4l2_subdev_state *sd_state,
969 struct v4l2_subdev_format *format)
970{
971 struct v4l2_mbus_framefmt *fmt = &format->format;
972 struct gc0310_device *dev = to_gc0310_sensor(sd);
973 struct i2c_client *client = v4l2_get_subdevdata(sd);
974 struct camera_mipi_info *gc0310_info = NULL;
975 int ret = 0;
976 int idx = 0;
977
978 if (format->pad)
979 return -EINVAL;
980
981 if (!fmt)
982 return -EINVAL;
983
984 gc0310_info = v4l2_get_subdev_hostdata(sd);
985 if (!gc0310_info)
986 return -EINVAL;
987
988 mutex_lock(&dev->input_lock);
989
990 idx = nearest_resolution_index(fmt->width, fmt->height);
991 if (idx == -1) {
992
993 fmt->width = gc0310_res[N_RES - 1].width;
994 fmt->height = gc0310_res[N_RES - 1].height;
995 } else {
996 fmt->width = gc0310_res[idx].width;
997 fmt->height = gc0310_res[idx].height;
998 }
999 fmt->code = MEDIA_BUS_FMT_SGRBG8_1X8;
1000
1001 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
1002 sd_state->pads->try_fmt = *fmt;
1003 mutex_unlock(&dev->input_lock);
1004 return 0;
1005 }
1006
1007 dev->fmt_idx = get_resolution_index(fmt->width, fmt->height);
1008 if (dev->fmt_idx == -1) {
1009 dev_err(&client->dev, "get resolution fail\n");
1010 mutex_unlock(&dev->input_lock);
1011 return -EINVAL;
1012 }
1013
1014 dev_dbg(&client->dev, "%s: before gc0310_write_reg_array %s\n",
1015 __func__, gc0310_res[dev->fmt_idx].desc);
1016 ret = startup(sd);
1017 if (ret) {
1018 dev_err(&client->dev, "gc0310 startup err\n");
1019 goto err;
1020 }
1021
1022 ret = gc0310_get_intg_factor(client, gc0310_info,
1023 &gc0310_res[dev->fmt_idx]);
1024 if (ret) {
1025 dev_err(&client->dev, "failed to get integration_factor\n");
1026 goto err;
1027 }
1028
1029err:
1030 mutex_unlock(&dev->input_lock);
1031 return ret;
1032}
1033
1034static int gc0310_get_fmt(struct v4l2_subdev *sd,
1035 struct v4l2_subdev_state *sd_state,
1036 struct v4l2_subdev_format *format)
1037{
1038 struct v4l2_mbus_framefmt *fmt = &format->format;
1039 struct gc0310_device *dev = to_gc0310_sensor(sd);
1040
1041 if (format->pad)
1042 return -EINVAL;
1043
1044 if (!fmt)
1045 return -EINVAL;
1046
1047 fmt->width = gc0310_res[dev->fmt_idx].width;
1048 fmt->height = gc0310_res[dev->fmt_idx].height;
1049 fmt->code = MEDIA_BUS_FMT_SGRBG8_1X8;
1050
1051 return 0;
1052}
1053
1054static int gc0310_detect(struct i2c_client *client)
1055{
1056 struct i2c_adapter *adapter = client->adapter;
1057 u8 high, low;
1058 int ret;
1059 u16 id;
1060
1061 if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
1062 return -ENODEV;
1063
1064 ret = gc0310_read_reg(client, GC0310_8BIT,
1065 GC0310_SC_CMMN_CHIP_ID_H, &high);
1066 if (ret) {
1067 dev_err(&client->dev, "read sensor_id_high failed\n");
1068 return -ENODEV;
1069 }
1070 ret = gc0310_read_reg(client, GC0310_8BIT,
1071 GC0310_SC_CMMN_CHIP_ID_L, &low);
1072 if (ret) {
1073 dev_err(&client->dev, "read sensor_id_low failed\n");
1074 return -ENODEV;
1075 }
1076 id = ((((u16)high) << 8) | (u16)low);
1077 dev_dbg(&client->dev, "sensor ID = 0x%x\n", id);
1078
1079 if (id != GC0310_ID) {
1080 dev_err(&client->dev, "sensor ID error, read id = 0x%x, target id = 0x%x\n", id,
1081 GC0310_ID);
1082 return -ENODEV;
1083 }
1084
1085 dev_dbg(&client->dev, "detect gc0310 success\n");
1086
1087 return 0;
1088}
1089
1090static int gc0310_s_stream(struct v4l2_subdev *sd, int enable)
1091{
1092 struct gc0310_device *dev = to_gc0310_sensor(sd);
1093 struct i2c_client *client = v4l2_get_subdevdata(sd);
1094 int ret;
1095
1096 dev_dbg(&client->dev, "%s S enable=%d\n", __func__, enable);
1097 mutex_lock(&dev->input_lock);
1098
1099 if (enable) {
1100
1101 ret = gc0310_write_reg(client, GC0310_8BIT,
1102 0xFE, 0x30);
1103 if (ret) {
1104 mutex_unlock(&dev->input_lock);
1105 return ret;
1106 }
1107 }
1108
1109 ret = gc0310_write_reg(client, GC0310_8BIT,
1110 GC0310_RESET_RELATED, GC0310_REGISTER_PAGE_3);
1111 if (ret) {
1112 mutex_unlock(&dev->input_lock);
1113 return ret;
1114 }
1115
1116 ret = gc0310_write_reg(client, GC0310_8BIT, GC0310_SW_STREAM,
1117 enable ? GC0310_START_STREAMING :
1118 GC0310_STOP_STREAMING);
1119 if (ret) {
1120 mutex_unlock(&dev->input_lock);
1121 return ret;
1122 }
1123
1124 ret = gc0310_write_reg(client, GC0310_8BIT,
1125 GC0310_RESET_RELATED, GC0310_REGISTER_PAGE_0);
1126 if (ret) {
1127 mutex_unlock(&dev->input_lock);
1128 return ret;
1129 }
1130
1131 mutex_unlock(&dev->input_lock);
1132 return ret;
1133}
1134
1135static int gc0310_s_config(struct v4l2_subdev *sd,
1136 int irq, void *platform_data)
1137{
1138 struct gc0310_device *dev = to_gc0310_sensor(sd);
1139 struct i2c_client *client = v4l2_get_subdevdata(sd);
1140 int ret = 0;
1141
1142 if (!platform_data)
1143 return -ENODEV;
1144
1145 dev->platform_data =
1146 (struct camera_sensor_platform_data *)platform_data;
1147
1148 mutex_lock(&dev->input_lock);
1149
1150
1151
1152
1153 ret = power_down(sd);
1154 if (ret) {
1155 dev_err(&client->dev, "gc0310 power-off err.\n");
1156 goto fail_power_off;
1157 }
1158
1159 ret = power_up(sd);
1160 if (ret) {
1161 dev_err(&client->dev, "gc0310 power-up err.\n");
1162 goto fail_power_on;
1163 }
1164
1165 ret = dev->platform_data->csi_cfg(sd, 1);
1166 if (ret)
1167 goto fail_csi_cfg;
1168
1169
1170 ret = gc0310_detect(client);
1171 if (ret) {
1172 dev_err(&client->dev, "gc0310_detect err s_config.\n");
1173 goto fail_csi_cfg;
1174 }
1175
1176
1177 ret = power_down(sd);
1178 if (ret) {
1179 dev_err(&client->dev, "gc0310 power-off err.\n");
1180 goto fail_csi_cfg;
1181 }
1182 mutex_unlock(&dev->input_lock);
1183
1184 return 0;
1185
1186fail_csi_cfg:
1187 dev->platform_data->csi_cfg(sd, 0);
1188fail_power_on:
1189 power_down(sd);
1190 dev_err(&client->dev, "sensor power-gating failed\n");
1191fail_power_off:
1192 mutex_unlock(&dev->input_lock);
1193 return ret;
1194}
1195
1196static int gc0310_g_frame_interval(struct v4l2_subdev *sd,
1197 struct v4l2_subdev_frame_interval *interval)
1198{
1199 struct gc0310_device *dev = to_gc0310_sensor(sd);
1200
1201 interval->interval.numerator = 1;
1202 interval->interval.denominator = gc0310_res[dev->fmt_idx].fps;
1203
1204 return 0;
1205}
1206
1207static int gc0310_enum_mbus_code(struct v4l2_subdev *sd,
1208 struct v4l2_subdev_state *sd_state,
1209 struct v4l2_subdev_mbus_code_enum *code)
1210{
1211 if (code->index >= MAX_FMTS)
1212 return -EINVAL;
1213
1214 code->code = MEDIA_BUS_FMT_SGRBG8_1X8;
1215 return 0;
1216}
1217
1218static int gc0310_enum_frame_size(struct v4l2_subdev *sd,
1219 struct v4l2_subdev_state *sd_state,
1220 struct v4l2_subdev_frame_size_enum *fse)
1221{
1222 int index = fse->index;
1223
1224 if (index >= N_RES)
1225 return -EINVAL;
1226
1227 fse->min_width = gc0310_res[index].width;
1228 fse->min_height = gc0310_res[index].height;
1229 fse->max_width = gc0310_res[index].width;
1230 fse->max_height = gc0310_res[index].height;
1231
1232 return 0;
1233}
1234
1235static int gc0310_g_skip_frames(struct v4l2_subdev *sd, u32 *frames)
1236{
1237 struct gc0310_device *dev = to_gc0310_sensor(sd);
1238
1239 mutex_lock(&dev->input_lock);
1240 *frames = gc0310_res[dev->fmt_idx].skip_frames;
1241 mutex_unlock(&dev->input_lock);
1242
1243 return 0;
1244}
1245
1246static const struct v4l2_subdev_sensor_ops gc0310_sensor_ops = {
1247 .g_skip_frames = gc0310_g_skip_frames,
1248};
1249
1250static const struct v4l2_subdev_video_ops gc0310_video_ops = {
1251 .s_stream = gc0310_s_stream,
1252 .g_frame_interval = gc0310_g_frame_interval,
1253};
1254
1255static const struct v4l2_subdev_core_ops gc0310_core_ops = {
1256 .s_power = gc0310_s_power,
1257 .ioctl = gc0310_ioctl,
1258};
1259
1260static const struct v4l2_subdev_pad_ops gc0310_pad_ops = {
1261 .enum_mbus_code = gc0310_enum_mbus_code,
1262 .enum_frame_size = gc0310_enum_frame_size,
1263 .get_fmt = gc0310_get_fmt,
1264 .set_fmt = gc0310_set_fmt,
1265};
1266
1267static const struct v4l2_subdev_ops gc0310_ops = {
1268 .core = &gc0310_core_ops,
1269 .video = &gc0310_video_ops,
1270 .pad = &gc0310_pad_ops,
1271 .sensor = &gc0310_sensor_ops,
1272};
1273
1274static int gc0310_remove(struct i2c_client *client)
1275{
1276 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1277 struct gc0310_device *dev = to_gc0310_sensor(sd);
1278
1279 dev_dbg(&client->dev, "gc0310_remove...\n");
1280
1281 dev->platform_data->csi_cfg(sd, 0);
1282
1283 v4l2_device_unregister_subdev(sd);
1284 media_entity_cleanup(&dev->sd.entity);
1285 v4l2_ctrl_handler_free(&dev->ctrl_handler);
1286 kfree(dev);
1287
1288 return 0;
1289}
1290
1291static int gc0310_probe(struct i2c_client *client)
1292{
1293 struct gc0310_device *dev;
1294 int ret;
1295 void *pdata;
1296 unsigned int i;
1297
1298 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
1299 if (!dev)
1300 return -ENOMEM;
1301
1302 mutex_init(&dev->input_lock);
1303
1304 dev->fmt_idx = 0;
1305 v4l2_i2c_subdev_init(&dev->sd, client, &gc0310_ops);
1306
1307 pdata = gmin_camera_platform_data(&dev->sd,
1308 ATOMISP_INPUT_FORMAT_RAW_8,
1309 atomisp_bayer_order_grbg);
1310 if (!pdata) {
1311 ret = -EINVAL;
1312 goto out_free;
1313 }
1314
1315 ret = gc0310_s_config(&dev->sd, client->irq, pdata);
1316 if (ret)
1317 goto out_free;
1318
1319 ret = atomisp_register_i2c_module(&dev->sd, pdata, RAW_CAMERA);
1320 if (ret)
1321 goto out_free;
1322
1323 dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1324 dev->pad.flags = MEDIA_PAD_FL_SOURCE;
1325 dev->format.code = MEDIA_BUS_FMT_SGRBG8_1X8;
1326 dev->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
1327 ret =
1328 v4l2_ctrl_handler_init(&dev->ctrl_handler,
1329 ARRAY_SIZE(gc0310_controls));
1330 if (ret) {
1331 gc0310_remove(client);
1332 return ret;
1333 }
1334
1335 for (i = 0; i < ARRAY_SIZE(gc0310_controls); i++)
1336 v4l2_ctrl_new_custom(&dev->ctrl_handler, &gc0310_controls[i],
1337 NULL);
1338
1339 if (dev->ctrl_handler.error) {
1340 gc0310_remove(client);
1341 return dev->ctrl_handler.error;
1342 }
1343
1344
1345 dev->ctrl_handler.lock = &dev->input_lock;
1346 dev->sd.ctrl_handler = &dev->ctrl_handler;
1347
1348 ret = media_entity_pads_init(&dev->sd.entity, 1, &dev->pad);
1349 if (ret)
1350 gc0310_remove(client);
1351
1352 return ret;
1353out_free:
1354 v4l2_device_unregister_subdev(&dev->sd);
1355 kfree(dev);
1356 return ret;
1357}
1358
1359static const struct acpi_device_id gc0310_acpi_match[] = {
1360 {"XXGC0310"},
1361 {"INT0310"},
1362 {},
1363};
1364MODULE_DEVICE_TABLE(acpi, gc0310_acpi_match);
1365
1366static struct i2c_driver gc0310_driver = {
1367 .driver = {
1368 .name = "gc0310",
1369 .acpi_match_table = gc0310_acpi_match,
1370 },
1371 .probe_new = gc0310_probe,
1372 .remove = gc0310_remove,
1373};
1374module_i2c_driver(gc0310_driver);
1375
1376MODULE_AUTHOR("Lai, Angie <angie.lai@intel.com>");
1377MODULE_DESCRIPTION("A low-level driver for GalaxyCore GC0310 sensors");
1378MODULE_LICENSE("GPL");
1379
