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17#include <linux/module.h>
18#include <linux/types.h>
19#include <linux/kernel.h>
20#include <linux/mm.h>
21#include <linux/string.h>
22#include <linux/errno.h>
23#include <linux/init.h>
24#include <linux/kmod.h>
25#include <linux/device.h>
26#include <linux/delay.h>
27#include <linux/slab.h>
28#include <linux/i2c.h>
29#include <linux/gpio.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}
243static int gc0310_g_focal(struct v4l2_subdev *sd, s32 *val)
244{
245 *val = (GC0310_FOCAL_LENGTH_NUM << 16) | GC0310_FOCAL_LENGTH_DEM;
246 return 0;
247}
248
249static int gc0310_g_fnumber(struct v4l2_subdev *sd, s32 *val)
250{
251
252 *val = (GC0310_F_NUMBER_DEFAULT_NUM << 16) | GC0310_F_NUMBER_DEM;
253 return 0;
254}
255
256static int gc0310_g_fnumber_range(struct v4l2_subdev *sd, s32 *val)
257{
258 *val = (GC0310_F_NUMBER_DEFAULT_NUM << 24) |
259 (GC0310_F_NUMBER_DEM << 16) |
260 (GC0310_F_NUMBER_DEFAULT_NUM << 8) | GC0310_F_NUMBER_DEM;
261 return 0;
262}
263
264static int gc0310_g_bin_factor_x(struct v4l2_subdev *sd, s32 *val)
265{
266 struct gc0310_device *dev = to_gc0310_sensor(sd);
267
268 *val = gc0310_res[dev->fmt_idx].bin_factor_x;
269
270 return 0;
271}
272
273static int gc0310_g_bin_factor_y(struct v4l2_subdev *sd, s32 *val)
274{
275 struct gc0310_device *dev = to_gc0310_sensor(sd);
276
277 *val = gc0310_res[dev->fmt_idx].bin_factor_y;
278
279 return 0;
280}
281
282static int gc0310_get_intg_factor(struct i2c_client *client,
283 struct camera_mipi_info *info,
284 const struct gc0310_resolution *res)
285{
286 struct v4l2_subdev *sd = i2c_get_clientdata(client);
287 struct gc0310_device *dev = to_gc0310_sensor(sd);
288 struct atomisp_sensor_mode_data *buf = &info->data;
289 u16 val;
290 u8 reg_val;
291 int ret;
292 unsigned int hori_blanking;
293 unsigned int vert_blanking;
294 unsigned int sh_delay;
295
296 if (!info)
297 return -EINVAL;
298
299
300 dev->vt_pix_clk_freq_mhz = 14400000;
301 buf->vt_pix_clk_freq_mhz = dev->vt_pix_clk_freq_mhz;
302 pr_info("vt_pix_clk_freq_mhz=%d\n", buf->vt_pix_clk_freq_mhz);
303
304
305 buf->coarse_integration_time_min = GC0310_COARSE_INTG_TIME_MIN;
306 buf->coarse_integration_time_max_margin =
307 GC0310_COARSE_INTG_TIME_MAX_MARGIN;
308
309 buf->fine_integration_time_min = GC0310_FINE_INTG_TIME_MIN;
310 buf->fine_integration_time_max_margin =
311 GC0310_FINE_INTG_TIME_MAX_MARGIN;
312
313 buf->fine_integration_time_def = GC0310_FINE_INTG_TIME_MIN;
314 buf->read_mode = res->bin_mode;
315
316
317
318 ret = gc0310_read_reg(client, GC0310_8BIT,
319 GC0310_H_CROP_START_H, ®_val);
320 if (ret)
321 return ret;
322 val = (reg_val & 0xFF) << 8;
323 ret = gc0310_read_reg(client, GC0310_8BIT,
324 GC0310_H_CROP_START_L, ®_val);
325 if (ret)
326 return ret;
327 buf->crop_horizontal_start = val | (reg_val & 0xFF);
328 pr_info("crop_horizontal_start=%d\n", buf->crop_horizontal_start);
329
330
331 ret = gc0310_read_reg(client, GC0310_8BIT,
332 GC0310_V_CROP_START_H, ®_val);
333 if (ret)
334 return ret;
335 val = (reg_val & 0xFF) << 8;
336 ret = gc0310_read_reg(client, GC0310_8BIT,
337 GC0310_V_CROP_START_L, ®_val);
338 if (ret)
339 return ret;
340 buf->crop_vertical_start = val | (reg_val & 0xFF);
341 pr_info("crop_vertical_start=%d\n", buf->crop_vertical_start);
342
343
344 ret = gc0310_read_reg(client, GC0310_8BIT,
345 GC0310_H_OUTSIZE_H, ®_val);
346 if (ret)
347 return ret;
348 val = (reg_val & 0xFF) << 8;
349 ret = gc0310_read_reg(client, GC0310_8BIT,
350 GC0310_H_OUTSIZE_L, ®_val);
351 if (ret)
352 return ret;
353 buf->output_width = val | (reg_val & 0xFF);
354 pr_info("output_width=%d\n", buf->output_width);
355
356
357 ret = gc0310_read_reg(client, GC0310_8BIT,
358 GC0310_V_OUTSIZE_H, ®_val);
359 if (ret)
360 return ret;
361 val = (reg_val & 0xFF) << 8;
362 ret = gc0310_read_reg(client, GC0310_8BIT,
363 GC0310_V_OUTSIZE_L, ®_val);
364 if (ret)
365 return ret;
366 buf->output_height = val | (reg_val & 0xFF);
367 pr_info("output_height=%d\n", buf->output_height);
368
369 buf->crop_horizontal_end = buf->crop_horizontal_start + buf->output_width - 1;
370 buf->crop_vertical_end = buf->crop_vertical_start + buf->output_height - 1;
371 pr_info("crop_horizontal_end=%d\n", buf->crop_horizontal_end);
372 pr_info("crop_vertical_end=%d\n", buf->crop_vertical_end);
373
374
375 ret = gc0310_read_reg(client, GC0310_8BIT,
376 GC0310_H_BLANKING_H, ®_val);
377 if (ret)
378 return ret;
379 val = (reg_val & 0xFF) << 8;
380 ret = gc0310_read_reg(client, GC0310_8BIT,
381 GC0310_H_BLANKING_L, ®_val);
382 if (ret)
383 return ret;
384 hori_blanking = val | (reg_val & 0xFF);
385 ret = gc0310_read_reg(client, GC0310_8BIT,
386 GC0310_SH_DELAY, ®_val);
387 if (ret)
388 return ret;
389 sh_delay = reg_val;
390 buf->line_length_pck = buf->output_width + hori_blanking + sh_delay + 4;
391 pr_info("hori_blanking=%d sh_delay=%d line_length_pck=%d\n", hori_blanking, sh_delay, buf->line_length_pck);
392
393
394 ret = gc0310_read_reg(client, GC0310_8BIT,
395 GC0310_V_BLANKING_H, ®_val);
396 if (ret)
397 return ret;
398 val = (reg_val & 0xFF) << 8;
399 ret = gc0310_read_reg(client, GC0310_8BIT,
400 GC0310_V_BLANKING_L, ®_val);
401 if (ret)
402 return ret;
403 vert_blanking = val | (reg_val & 0xFF);
404 buf->frame_length_lines = buf->output_height + vert_blanking;
405 pr_info("vert_blanking=%d frame_length_lines=%d\n", vert_blanking, buf->frame_length_lines);
406
407 buf->binning_factor_x = res->bin_factor_x ?
408 res->bin_factor_x : 1;
409 buf->binning_factor_y = res->bin_factor_y ?
410 res->bin_factor_y : 1;
411 return 0;
412}
413
414static int gc0310_set_gain(struct v4l2_subdev *sd, int gain)
415
416{
417 struct i2c_client *client = v4l2_get_subdevdata(sd);
418 int ret;
419 u8 again, dgain;
420
421 if (gain < 0x20)
422 gain = 0x20;
423 if (gain > 0x80)
424 gain = 0x80;
425
426 if (gain >= 0x20 && gain < 0x40) {
427 again = 0x0;
428 dgain = gain;
429 } else {
430 again = 0x2;
431 dgain = gain / 2;
432 }
433
434 pr_info("gain=0x%x again=0x%x dgain=0x%x\n", gain, again, dgain);
435
436
437 ret = gc0310_write_reg(client, GC0310_8BIT,
438 GC0310_AGC_ADJ, again);
439 if (ret)
440 return ret;
441
442
443 ret = gc0310_write_reg(client, GC0310_8BIT,
444 GC0310_DGC_ADJ, dgain);
445 if (ret)
446 return ret;
447
448 return 0;
449}
450
451static int __gc0310_set_exposure(struct v4l2_subdev *sd, int coarse_itg,
452 int gain, int digitgain)
453
454{
455 struct i2c_client *client = v4l2_get_subdevdata(sd);
456 int ret;
457
458 pr_info("coarse_itg=%d gain=%d digitgain=%d\n", coarse_itg, gain, digitgain);
459
460
461 ret = gc0310_write_reg(client, GC0310_8BIT,
462 GC0310_AEC_PK_EXPO_L,
463 coarse_itg & 0xff);
464 if (ret)
465 return ret;
466
467 ret = gc0310_write_reg(client, GC0310_8BIT,
468 GC0310_AEC_PK_EXPO_H,
469 (coarse_itg >> 8) & 0x0f);
470 if (ret)
471 return ret;
472
473 ret = gc0310_set_gain(sd, gain);
474 if (ret)
475 return ret;
476
477 return ret;
478}
479
480static int gc0310_set_exposure(struct v4l2_subdev *sd, int exposure,
481 int gain, int digitgain)
482{
483 struct gc0310_device *dev = to_gc0310_sensor(sd);
484 int ret;
485
486 mutex_lock(&dev->input_lock);
487 ret = __gc0310_set_exposure(sd, exposure, gain, digitgain);
488 mutex_unlock(&dev->input_lock);
489
490 return ret;
491}
492
493static long gc0310_s_exposure(struct v4l2_subdev *sd,
494 struct atomisp_exposure *exposure)
495{
496 int exp = exposure->integration_time[0];
497 int gain = exposure->gain[0];
498 int digitgain = exposure->gain[1];
499
500
501 if (gain == 0) {
502 struct i2c_client *client = v4l2_get_subdevdata(sd);
503 v4l2_err(client, "%s: invalid value\n", __func__);
504 return -EINVAL;
505 }
506
507 return gc0310_set_exposure(sd, exp, gain, digitgain);
508}
509
510
511static int gc0310_v_flip(struct v4l2_subdev *sd, s32 value)
512{
513 return 0;
514}
515
516
517static int gc0310_h_flip(struct v4l2_subdev *sd, s32 value)
518{
519 return 0;
520}
521
522static long gc0310_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
523{
524
525 switch (cmd) {
526 case ATOMISP_IOC_S_EXPOSURE:
527 return gc0310_s_exposure(sd, arg);
528 default:
529 return -EINVAL;
530 }
531 return 0;
532}
533
534
535
536
537static int gc0310_q_exposure(struct v4l2_subdev *sd, s32 *value)
538{
539 struct i2c_client *client = v4l2_get_subdevdata(sd);
540 u8 reg_v;
541 int ret;
542
543
544 ret = gc0310_read_reg(client, GC0310_8BIT,
545 GC0310_AEC_PK_EXPO_L,
546 ®_v);
547 if (ret)
548 goto err;
549
550 *value = reg_v;
551 ret = gc0310_read_reg(client, GC0310_8BIT,
552 GC0310_AEC_PK_EXPO_H,
553 ®_v);
554 if (ret)
555 goto err;
556
557 *value = *value + (reg_v << 8);
558err:
559 return ret;
560}
561
562static int gc0310_s_ctrl(struct v4l2_ctrl *ctrl)
563{
564 struct gc0310_device *dev =
565 container_of(ctrl->handler, struct gc0310_device, ctrl_handler);
566 struct i2c_client *client = v4l2_get_subdevdata(&dev->sd);
567 int ret = 0;
568
569 switch (ctrl->id) {
570 case V4L2_CID_VFLIP:
571 dev_dbg(&client->dev, "%s: CID_VFLIP:%d.\n",
572 __func__, ctrl->val);
573 ret = gc0310_v_flip(&dev->sd, ctrl->val);
574 break;
575 case V4L2_CID_HFLIP:
576 dev_dbg(&client->dev, "%s: CID_HFLIP:%d.\n",
577 __func__, ctrl->val);
578 ret = gc0310_h_flip(&dev->sd, ctrl->val);
579 break;
580 default:
581 ret = -EINVAL;
582 }
583 return ret;
584}
585
586static int gc0310_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
587{
588 struct gc0310_device *dev =
589 container_of(ctrl->handler, struct gc0310_device, ctrl_handler);
590 int ret = 0;
591
592 switch (ctrl->id) {
593 case V4L2_CID_EXPOSURE_ABSOLUTE:
594 ret = gc0310_q_exposure(&dev->sd, &ctrl->val);
595 break;
596 case V4L2_CID_FOCAL_ABSOLUTE:
597 ret = gc0310_g_focal(&dev->sd, &ctrl->val);
598 break;
599 case V4L2_CID_FNUMBER_ABSOLUTE:
600 ret = gc0310_g_fnumber(&dev->sd, &ctrl->val);
601 break;
602 case V4L2_CID_FNUMBER_RANGE:
603 ret = gc0310_g_fnumber_range(&dev->sd, &ctrl->val);
604 break;
605 case V4L2_CID_BIN_FACTOR_HORZ:
606 ret = gc0310_g_bin_factor_x(&dev->sd, &ctrl->val);
607 break;
608 case V4L2_CID_BIN_FACTOR_VERT:
609 ret = gc0310_g_bin_factor_y(&dev->sd, &ctrl->val);
610 break;
611 default:
612 ret = -EINVAL;
613 }
614
615 return ret;
616}
617
618static const struct v4l2_ctrl_ops ctrl_ops = {
619 .s_ctrl = gc0310_s_ctrl,
620 .g_volatile_ctrl = gc0310_g_volatile_ctrl
621};
622
623struct v4l2_ctrl_config gc0310_controls[] = {
624 {
625 .ops = &ctrl_ops,
626 .id = V4L2_CID_EXPOSURE_ABSOLUTE,
627 .type = V4L2_CTRL_TYPE_INTEGER,
628 .name = "exposure",
629 .min = 0x0,
630 .max = 0xffff,
631 .step = 0x01,
632 .def = 0x00,
633 .flags = 0,
634 },
635 {
636 .ops = &ctrl_ops,
637 .id = V4L2_CID_VFLIP,
638 .type = V4L2_CTRL_TYPE_BOOLEAN,
639 .name = "Flip",
640 .min = 0,
641 .max = 1,
642 .step = 1,
643 .def = 0,
644 },
645 {
646 .ops = &ctrl_ops,
647 .id = V4L2_CID_HFLIP,
648 .type = V4L2_CTRL_TYPE_BOOLEAN,
649 .name = "Mirror",
650 .min = 0,
651 .max = 1,
652 .step = 1,
653 .def = 0,
654 },
655 {
656 .ops = &ctrl_ops,
657 .id = V4L2_CID_FOCAL_ABSOLUTE,
658 .type = V4L2_CTRL_TYPE_INTEGER,
659 .name = "focal length",
660 .min = GC0310_FOCAL_LENGTH_DEFAULT,
661 .max = GC0310_FOCAL_LENGTH_DEFAULT,
662 .step = 0x01,
663 .def = GC0310_FOCAL_LENGTH_DEFAULT,
664 .flags = 0,
665 },
666 {
667 .ops = &ctrl_ops,
668 .id = V4L2_CID_FNUMBER_ABSOLUTE,
669 .type = V4L2_CTRL_TYPE_INTEGER,
670 .name = "f-number",
671 .min = GC0310_F_NUMBER_DEFAULT,
672 .max = GC0310_F_NUMBER_DEFAULT,
673 .step = 0x01,
674 .def = GC0310_F_NUMBER_DEFAULT,
675 .flags = 0,
676 },
677 {
678 .ops = &ctrl_ops,
679 .id = V4L2_CID_FNUMBER_RANGE,
680 .type = V4L2_CTRL_TYPE_INTEGER,
681 .name = "f-number range",
682 .min = GC0310_F_NUMBER_RANGE,
683 .max = GC0310_F_NUMBER_RANGE,
684 .step = 0x01,
685 .def = GC0310_F_NUMBER_RANGE,
686 .flags = 0,
687 },
688 {
689 .ops = &ctrl_ops,
690 .id = V4L2_CID_BIN_FACTOR_HORZ,
691 .type = V4L2_CTRL_TYPE_INTEGER,
692 .name = "horizontal binning factor",
693 .min = 0,
694 .max = GC0310_BIN_FACTOR_MAX,
695 .step = 1,
696 .def = 0,
697 .flags = 0,
698 },
699 {
700 .ops = &ctrl_ops,
701 .id = V4L2_CID_BIN_FACTOR_VERT,
702 .type = V4L2_CTRL_TYPE_INTEGER,
703 .name = "vertical binning factor",
704 .min = 0,
705 .max = GC0310_BIN_FACTOR_MAX,
706 .step = 1,
707 .def = 0,
708 .flags = 0,
709 },
710};
711
712static int gc0310_init(struct v4l2_subdev *sd)
713{
714 int ret;
715 struct i2c_client *client = v4l2_get_subdevdata(sd);
716 struct gc0310_device *dev = to_gc0310_sensor(sd);
717
718 pr_info("%s S\n", __func__);
719 mutex_lock(&dev->input_lock);
720
721
722 ret = gc0310_write_reg_array(client, gc0310_reset_register);
723
724
725 gc0310_res = gc0310_res_preview;
726 N_RES = N_RES_PREVIEW;
727
728 mutex_unlock(&dev->input_lock);
729
730 pr_info("%s E\n", __func__);
731 return 0;
732}
733
734static int power_ctrl(struct v4l2_subdev *sd, bool flag)
735{
736 int ret = 0;
737 struct gc0310_device *dev = to_gc0310_sensor(sd);
738 if (!dev || !dev->platform_data)
739 return -ENODEV;
740
741
742 if (dev->platform_data->power_ctrl)
743 return dev->platform_data->power_ctrl(sd, flag);
744
745 if (flag) {
746
747
748
749
750
751
752
753
754
755 ret |= dev->platform_data->v1p8_ctrl(sd, 1);
756 ret |= dev->platform_data->v2p8_ctrl(sd, 1);
757 usleep_range(10000, 15000);
758 }
759
760 if (!flag || ret) {
761 ret |= dev->platform_data->v1p8_ctrl(sd, 0);
762 ret |= dev->platform_data->v2p8_ctrl(sd, 0);
763 }
764 return ret;
765}
766
767static int gpio_ctrl(struct v4l2_subdev *sd, bool flag)
768{
769 int ret;
770 struct gc0310_device *dev = to_gc0310_sensor(sd);
771
772 if (!dev || !dev->platform_data)
773 return -ENODEV;
774
775
776 if (dev->platform_data->gpio_ctrl)
777 return dev->platform_data->gpio_ctrl(sd, flag);
778
779
780 if (flag) {
781
782 ret = dev->platform_data->gpio0_ctrl(sd, 0);
783 usleep_range(5000, 10000);
784 ret |= dev->platform_data->gpio0_ctrl(sd, 1);
785 usleep_range(10000, 15000);
786 ret |= dev->platform_data->gpio1_ctrl(sd, 0);
787 usleep_range(10000, 15000);
788 } else {
789 ret = dev->platform_data->gpio1_ctrl(sd, 1);
790 ret |= dev->platform_data->gpio0_ctrl(sd, 0);
791 }
792 return ret;
793}
794
795
796static int power_down(struct v4l2_subdev *sd);
797
798static int power_up(struct v4l2_subdev *sd)
799{
800 struct gc0310_device *dev = to_gc0310_sensor(sd);
801 struct i2c_client *client = v4l2_get_subdevdata(sd);
802 int ret;
803
804 pr_info("%s S\n", __func__);
805 if (!dev->platform_data) {
806 dev_err(&client->dev,
807 "no camera_sensor_platform_data");
808 return -ENODEV;
809 }
810
811
812 ret = power_ctrl(sd, 1);
813 if (ret)
814 goto fail_power;
815
816
817 ret = dev->platform_data->flisclk_ctrl(sd, 1);
818 if (ret)
819 goto fail_clk;
820
821
822 ret = gpio_ctrl(sd, 1);
823 if (ret) {
824 ret = gpio_ctrl(sd, 1);
825 if (ret)
826 goto fail_gpio;
827 }
828
829 msleep(100);
830
831 pr_info("%s E\n", __func__);
832 return 0;
833
834fail_gpio:
835 dev->platform_data->flisclk_ctrl(sd, 0);
836fail_clk:
837 power_ctrl(sd, 0);
838fail_power:
839 dev_err(&client->dev, "sensor power-up failed\n");
840
841 return ret;
842}
843
844static int power_down(struct v4l2_subdev *sd)
845{
846 struct gc0310_device *dev = to_gc0310_sensor(sd);
847 struct i2c_client *client = v4l2_get_subdevdata(sd);
848 int ret = 0;
849
850 if (!dev->platform_data) {
851 dev_err(&client->dev,
852 "no camera_sensor_platform_data");
853 return -ENODEV;
854 }
855
856
857 ret = gpio_ctrl(sd, 0);
858 if (ret) {
859 ret = gpio_ctrl(sd, 0);
860 if (ret)
861 dev_err(&client->dev, "gpio failed 2\n");
862 }
863
864 ret = dev->platform_data->flisclk_ctrl(sd, 0);
865 if (ret)
866 dev_err(&client->dev, "flisclk failed\n");
867
868
869 ret = power_ctrl(sd, 0);
870 if (ret)
871 dev_err(&client->dev, "vprog failed.\n");
872
873 return ret;
874}
875
876static int gc0310_s_power(struct v4l2_subdev *sd, int on)
877{
878 int ret;
879 if (on == 0)
880 return power_down(sd);
881 else {
882 ret = power_up(sd);
883 if (!ret)
884 return gc0310_init(sd);
885 }
886 return ret;
887}
888
889
890
891
892
893
894
895
896
897
898
899#define LARGEST_ALLOWED_RATIO_MISMATCH 800
900static int distance(struct gc0310_resolution *res, u32 w, u32 h)
901{
902 unsigned int w_ratio = (res->width << 13) / w;
903 unsigned int h_ratio;
904 int match;
905
906 if (h == 0)
907 return -1;
908 h_ratio = (res->height << 13) / h;
909 if (h_ratio == 0)
910 return -1;
911 match = abs(((w_ratio << 13) / h_ratio) - ((int)8192));
912
913 if ((w_ratio < (int)8192) || (h_ratio < (int)8192) ||
914 (match > LARGEST_ALLOWED_RATIO_MISMATCH))
915 return -1;
916
917 return w_ratio + h_ratio;
918}
919
920
921static int nearest_resolution_index(int w, int h)
922{
923 int i;
924 int idx = -1;
925 int dist;
926 int min_dist = INT_MAX;
927 struct gc0310_resolution *tmp_res = NULL;
928
929 for (i = 0; i < N_RES; i++) {
930 tmp_res = &gc0310_res[i];
931 dist = distance(tmp_res, w, h);
932 if (dist == -1)
933 continue;
934 if (dist < min_dist) {
935 min_dist = dist;
936 idx = i;
937 }
938 }
939
940 return idx;
941}
942
943static int get_resolution_index(int w, int h)
944{
945 int i;
946
947 for (i = 0; i < N_RES; i++) {
948 if (w != gc0310_res[i].width)
949 continue;
950 if (h != gc0310_res[i].height)
951 continue;
952
953 return i;
954 }
955
956 return -1;
957}
958
959
960
961static int startup(struct v4l2_subdev *sd)
962{
963 struct gc0310_device *dev = to_gc0310_sensor(sd);
964 struct i2c_client *client = v4l2_get_subdevdata(sd);
965 int ret = 0;
966
967 pr_info("%s S\n", __func__);
968
969 ret = gc0310_write_reg_array(client, gc0310_res[dev->fmt_idx].regs);
970 if (ret) {
971 dev_err(&client->dev, "gc0310 write register err.\n");
972 return ret;
973 }
974
975 pr_info("%s E\n", __func__);
976 return ret;
977}
978
979static int gc0310_set_fmt(struct v4l2_subdev *sd,
980 struct v4l2_subdev_pad_config *cfg,
981 struct v4l2_subdev_format *format)
982{
983 struct v4l2_mbus_framefmt *fmt = &format->format;
984 struct gc0310_device *dev = to_gc0310_sensor(sd);
985 struct i2c_client *client = v4l2_get_subdevdata(sd);
986 struct camera_mipi_info *gc0310_info = NULL;
987 int ret = 0;
988 int idx = 0;
989 pr_info("%s S\n", __func__);
990
991 if (format->pad)
992 return -EINVAL;
993
994 if (!fmt)
995 return -EINVAL;
996
997 gc0310_info = v4l2_get_subdev_hostdata(sd);
998 if (!gc0310_info)
999 return -EINVAL;
1000
1001 mutex_lock(&dev->input_lock);
1002
1003 idx = nearest_resolution_index(fmt->width, fmt->height);
1004 if (idx == -1) {
1005
1006 fmt->width = gc0310_res[N_RES - 1].width;
1007 fmt->height = gc0310_res[N_RES - 1].height;
1008 } else {
1009 fmt->width = gc0310_res[idx].width;
1010 fmt->height = gc0310_res[idx].height;
1011 }
1012 fmt->code = MEDIA_BUS_FMT_SGRBG8_1X8;
1013
1014 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
1015 cfg->try_fmt = *fmt;
1016 mutex_unlock(&dev->input_lock);
1017 return 0;
1018 }
1019
1020 dev->fmt_idx = get_resolution_index(fmt->width, fmt->height);
1021 if (dev->fmt_idx == -1) {
1022 dev_err(&client->dev, "get resolution fail\n");
1023 mutex_unlock(&dev->input_lock);
1024 return -EINVAL;
1025 }
1026
1027 printk("%s: before gc0310_write_reg_array %s\n", __FUNCTION__,
1028 gc0310_res[dev->fmt_idx].desc);
1029 ret = startup(sd);
1030 if (ret) {
1031 dev_err(&client->dev, "gc0310 startup err\n");
1032 goto err;
1033 }
1034
1035 ret = gc0310_get_intg_factor(client, gc0310_info,
1036 &gc0310_res[dev->fmt_idx]);
1037 if (ret) {
1038 dev_err(&client->dev, "failed to get integration_factor\n");
1039 goto err;
1040 }
1041
1042 pr_info("%s E\n", __func__);
1043err:
1044 mutex_unlock(&dev->input_lock);
1045 return ret;
1046}
1047
1048static int gc0310_get_fmt(struct v4l2_subdev *sd,
1049 struct v4l2_subdev_pad_config *cfg,
1050 struct v4l2_subdev_format *format)
1051{
1052 struct v4l2_mbus_framefmt *fmt = &format->format;
1053 struct gc0310_device *dev = to_gc0310_sensor(sd);
1054
1055 if (format->pad)
1056 return -EINVAL;
1057
1058 if (!fmt)
1059 return -EINVAL;
1060
1061 fmt->width = gc0310_res[dev->fmt_idx].width;
1062 fmt->height = gc0310_res[dev->fmt_idx].height;
1063 fmt->code = MEDIA_BUS_FMT_SGRBG8_1X8;
1064
1065 return 0;
1066}
1067
1068static int gc0310_detect(struct i2c_client *client)
1069{
1070 struct i2c_adapter *adapter = client->adapter;
1071 u8 high, low;
1072 int ret;
1073 u16 id;
1074
1075 pr_info("%s S\n", __func__);
1076 if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
1077 return -ENODEV;
1078
1079 ret = gc0310_read_reg(client, GC0310_8BIT,
1080 GC0310_SC_CMMN_CHIP_ID_H, &high);
1081 if (ret) {
1082 dev_err(&client->dev, "read sensor_id_high failed\n");
1083 return -ENODEV;
1084 }
1085 ret = gc0310_read_reg(client, GC0310_8BIT,
1086 GC0310_SC_CMMN_CHIP_ID_L, &low);
1087 if (ret) {
1088 dev_err(&client->dev, "read sensor_id_low failed\n");
1089 return -ENODEV;
1090 }
1091 id = ((((u16) high) << 8) | (u16) low);
1092 pr_info("sensor ID = 0x%x\n", id);
1093
1094 if (id != GC0310_ID) {
1095 dev_err(&client->dev, "sensor ID error, read id = 0x%x, target id = 0x%x\n", id, GC0310_ID);
1096 return -ENODEV;
1097 }
1098
1099 dev_dbg(&client->dev, "detect gc0310 success\n");
1100
1101 pr_info("%s E\n", __func__);
1102
1103 return 0;
1104}
1105
1106static int gc0310_s_stream(struct v4l2_subdev *sd, int enable)
1107{
1108 struct gc0310_device *dev = to_gc0310_sensor(sd);
1109 struct i2c_client *client = v4l2_get_subdevdata(sd);
1110 int ret;
1111
1112 pr_info("%s S enable=%d\n", __func__, enable);
1113 mutex_lock(&dev->input_lock);
1114
1115 if (enable) {
1116
1117 ret = gc0310_write_reg(client, GC0310_8BIT,
1118 0xFE, 0x30);
1119 if (ret) {
1120 mutex_unlock(&dev->input_lock);
1121 return ret;
1122 }
1123 }
1124
1125 ret = gc0310_write_reg(client, GC0310_8BIT,
1126 GC0310_RESET_RELATED, GC0310_REGISTER_PAGE_3);
1127 if (ret) {
1128 mutex_unlock(&dev->input_lock);
1129 return ret;
1130 }
1131
1132 ret = gc0310_write_reg(client, GC0310_8BIT, GC0310_SW_STREAM,
1133 enable ? GC0310_START_STREAMING :
1134 GC0310_STOP_STREAMING);
1135 if (ret) {
1136 mutex_unlock(&dev->input_lock);
1137 return ret;
1138 }
1139
1140 ret = gc0310_write_reg(client, GC0310_8BIT,
1141 GC0310_RESET_RELATED, GC0310_REGISTER_PAGE_0);
1142 if (ret) {
1143 mutex_unlock(&dev->input_lock);
1144 return ret;
1145 }
1146
1147 mutex_unlock(&dev->input_lock);
1148 pr_info("%s E\n", __func__);
1149 return ret;
1150}
1151
1152
1153static int gc0310_s_config(struct v4l2_subdev *sd,
1154 int irq, void *platform_data)
1155{
1156 struct gc0310_device *dev = to_gc0310_sensor(sd);
1157 struct i2c_client *client = v4l2_get_subdevdata(sd);
1158 int ret = 0;
1159
1160 pr_info("%s S\n", __func__);
1161 if (!platform_data)
1162 return -ENODEV;
1163
1164 dev->platform_data =
1165 (struct camera_sensor_platform_data *)platform_data;
1166
1167 mutex_lock(&dev->input_lock);
1168 if (dev->platform_data->platform_init) {
1169 ret = dev->platform_data->platform_init(client);
1170 if (ret) {
1171 dev_err(&client->dev, "platform init err\n");
1172 goto platform_init_failed;
1173 }
1174 }
1175
1176
1177
1178
1179 ret = power_down(sd);
1180 if (ret) {
1181 dev_err(&client->dev, "gc0310 power-off err.\n");
1182 goto fail_power_off;
1183 }
1184
1185 ret = power_up(sd);
1186 if (ret) {
1187 dev_err(&client->dev, "gc0310 power-up err.\n");
1188 goto fail_power_on;
1189 }
1190
1191 ret = dev->platform_data->csi_cfg(sd, 1);
1192 if (ret)
1193 goto fail_csi_cfg;
1194
1195
1196 ret = gc0310_detect(client);
1197 if (ret) {
1198 dev_err(&client->dev, "gc0310_detect err s_config.\n");
1199 goto fail_csi_cfg;
1200 }
1201
1202
1203 ret = power_down(sd);
1204 if (ret) {
1205 dev_err(&client->dev, "gc0310 power-off err.\n");
1206 goto fail_csi_cfg;
1207 }
1208 mutex_unlock(&dev->input_lock);
1209
1210 pr_info("%s E\n", __func__);
1211 return 0;
1212
1213fail_csi_cfg:
1214 dev->platform_data->csi_cfg(sd, 0);
1215fail_power_on:
1216 power_down(sd);
1217 dev_err(&client->dev, "sensor power-gating failed\n");
1218fail_power_off:
1219 if (dev->platform_data->platform_deinit)
1220 dev->platform_data->platform_deinit();
1221platform_init_failed:
1222 mutex_unlock(&dev->input_lock);
1223 return ret;
1224}
1225
1226static int gc0310_g_parm(struct v4l2_subdev *sd,
1227 struct v4l2_streamparm *param)
1228{
1229 struct gc0310_device *dev = to_gc0310_sensor(sd);
1230 struct i2c_client *client = v4l2_get_subdevdata(sd);
1231
1232 if (!param)
1233 return -EINVAL;
1234
1235 if (param->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1236 dev_err(&client->dev, "unsupported buffer type.\n");
1237 return -EINVAL;
1238 }
1239
1240 memset(param, 0, sizeof(*param));
1241 param->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1242
1243 if (dev->fmt_idx >= 0 && dev->fmt_idx < N_RES) {
1244 param->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
1245 param->parm.capture.timeperframe.numerator = 1;
1246 param->parm.capture.capturemode = dev->run_mode;
1247 param->parm.capture.timeperframe.denominator =
1248 gc0310_res[dev->fmt_idx].fps;
1249 }
1250 return 0;
1251}
1252
1253static int gc0310_s_parm(struct v4l2_subdev *sd,
1254 struct v4l2_streamparm *param)
1255{
1256 struct gc0310_device *dev = to_gc0310_sensor(sd);
1257 dev->run_mode = param->parm.capture.capturemode;
1258
1259 mutex_lock(&dev->input_lock);
1260 switch (dev->run_mode) {
1261 case CI_MODE_VIDEO:
1262 gc0310_res = gc0310_res_video;
1263 N_RES = N_RES_VIDEO;
1264 break;
1265 case CI_MODE_STILL_CAPTURE:
1266 gc0310_res = gc0310_res_still;
1267 N_RES = N_RES_STILL;
1268 break;
1269 default:
1270 gc0310_res = gc0310_res_preview;
1271 N_RES = N_RES_PREVIEW;
1272 }
1273 mutex_unlock(&dev->input_lock);
1274 return 0;
1275}
1276
1277static int gc0310_g_frame_interval(struct v4l2_subdev *sd,
1278 struct v4l2_subdev_frame_interval *interval)
1279{
1280 struct gc0310_device *dev = to_gc0310_sensor(sd);
1281
1282 interval->interval.numerator = 1;
1283 interval->interval.denominator = gc0310_res[dev->fmt_idx].fps;
1284
1285 return 0;
1286}
1287
1288static int gc0310_enum_mbus_code(struct v4l2_subdev *sd,
1289 struct v4l2_subdev_pad_config *cfg,
1290 struct v4l2_subdev_mbus_code_enum *code)
1291{
1292 if (code->index >= MAX_FMTS)
1293 return -EINVAL;
1294
1295 code->code = MEDIA_BUS_FMT_SGRBG8_1X8;
1296 return 0;
1297}
1298
1299static int gc0310_enum_frame_size(struct v4l2_subdev *sd,
1300 struct v4l2_subdev_pad_config *cfg,
1301 struct v4l2_subdev_frame_size_enum *fse)
1302{
1303 int index = fse->index;
1304
1305 if (index >= N_RES)
1306 return -EINVAL;
1307
1308 fse->min_width = gc0310_res[index].width;
1309 fse->min_height = gc0310_res[index].height;
1310 fse->max_width = gc0310_res[index].width;
1311 fse->max_height = gc0310_res[index].height;
1312
1313 return 0;
1314
1315}
1316
1317
1318static int gc0310_g_skip_frames(struct v4l2_subdev *sd, u32 *frames)
1319{
1320 struct gc0310_device *dev = to_gc0310_sensor(sd);
1321
1322 mutex_lock(&dev->input_lock);
1323 *frames = gc0310_res[dev->fmt_idx].skip_frames;
1324 mutex_unlock(&dev->input_lock);
1325
1326 return 0;
1327}
1328
1329static const struct v4l2_subdev_sensor_ops gc0310_sensor_ops = {
1330 .g_skip_frames = gc0310_g_skip_frames,
1331};
1332
1333static const struct v4l2_subdev_video_ops gc0310_video_ops = {
1334 .s_stream = gc0310_s_stream,
1335 .g_parm = gc0310_g_parm,
1336 .s_parm = gc0310_s_parm,
1337 .g_frame_interval = gc0310_g_frame_interval,
1338};
1339
1340static const struct v4l2_subdev_core_ops gc0310_core_ops = {
1341 .s_power = gc0310_s_power,
1342 .ioctl = gc0310_ioctl,
1343};
1344
1345static const struct v4l2_subdev_pad_ops gc0310_pad_ops = {
1346 .enum_mbus_code = gc0310_enum_mbus_code,
1347 .enum_frame_size = gc0310_enum_frame_size,
1348 .get_fmt = gc0310_get_fmt,
1349 .set_fmt = gc0310_set_fmt,
1350};
1351
1352static const struct v4l2_subdev_ops gc0310_ops = {
1353 .core = &gc0310_core_ops,
1354 .video = &gc0310_video_ops,
1355 .pad = &gc0310_pad_ops,
1356 .sensor = &gc0310_sensor_ops,
1357};
1358
1359static int gc0310_remove(struct i2c_client *client)
1360{
1361 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1362 struct gc0310_device *dev = to_gc0310_sensor(sd);
1363 dev_dbg(&client->dev, "gc0310_remove...\n");
1364
1365 if (dev->platform_data->platform_deinit)
1366 dev->platform_data->platform_deinit();
1367
1368 dev->platform_data->csi_cfg(sd, 0);
1369
1370 v4l2_device_unregister_subdev(sd);
1371 media_entity_cleanup(&dev->sd.entity);
1372 v4l2_ctrl_handler_free(&dev->ctrl_handler);
1373 kfree(dev);
1374
1375 return 0;
1376}
1377
1378static int gc0310_probe(struct i2c_client *client,
1379 const struct i2c_device_id *id)
1380{
1381 struct gc0310_device *dev;
1382 int ret;
1383 void *pdata;
1384 unsigned int i;
1385
1386 pr_info("%s S\n", __func__);
1387 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
1388 if (!dev) {
1389 dev_err(&client->dev, "out of memory\n");
1390 return -ENOMEM;
1391 }
1392
1393 mutex_init(&dev->input_lock);
1394
1395 dev->fmt_idx = 0;
1396 v4l2_i2c_subdev_init(&(dev->sd), client, &gc0310_ops);
1397
1398 if (ACPI_COMPANION(&client->dev))
1399 pdata = gmin_camera_platform_data(&dev->sd,
1400 ATOMISP_INPUT_FORMAT_RAW_8,
1401 atomisp_bayer_order_grbg);
1402 else
1403 pdata = client->dev.platform_data;
1404
1405 if (!pdata) {
1406 ret = -EINVAL;
1407 goto out_free;
1408 }
1409
1410 ret = gc0310_s_config(&dev->sd, client->irq, pdata);
1411 if (ret)
1412 goto out_free;
1413
1414 ret = atomisp_register_i2c_module(&dev->sd, pdata, RAW_CAMERA);
1415 if (ret)
1416 goto out_free;
1417
1418 dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1419 dev->pad.flags = MEDIA_PAD_FL_SOURCE;
1420 dev->format.code = MEDIA_BUS_FMT_SGRBG8_1X8;
1421 dev->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
1422 ret =
1423 v4l2_ctrl_handler_init(&dev->ctrl_handler,
1424 ARRAY_SIZE(gc0310_controls));
1425 if (ret) {
1426 gc0310_remove(client);
1427 return ret;
1428 }
1429
1430 for (i = 0; i < ARRAY_SIZE(gc0310_controls); i++)
1431 v4l2_ctrl_new_custom(&dev->ctrl_handler, &gc0310_controls[i],
1432 NULL);
1433
1434 if (dev->ctrl_handler.error) {
1435 gc0310_remove(client);
1436 return dev->ctrl_handler.error;
1437 }
1438
1439
1440 dev->ctrl_handler.lock = &dev->input_lock;
1441 dev->sd.ctrl_handler = &dev->ctrl_handler;
1442
1443 ret = media_entity_pads_init(&dev->sd.entity, 1, &dev->pad);
1444 if (ret)
1445 gc0310_remove(client);
1446
1447 pr_info("%s E\n", __func__);
1448 return ret;
1449out_free:
1450 v4l2_device_unregister_subdev(&dev->sd);
1451 kfree(dev);
1452 return ret;
1453}
1454
1455static const struct acpi_device_id gc0310_acpi_match[] = {
1456 {"XXGC0310"},
1457 {"INT0310"},
1458 {},
1459};
1460
1461MODULE_DEVICE_TABLE(acpi, gc0310_acpi_match);
1462
1463MODULE_DEVICE_TABLE(i2c, gc0310_id);
1464static struct i2c_driver gc0310_driver = {
1465 .driver = {
1466 .name = GC0310_NAME,
1467 .acpi_match_table = ACPI_PTR(gc0310_acpi_match),
1468 },
1469 .probe = gc0310_probe,
1470 .remove = gc0310_remove,
1471 .id_table = gc0310_id,
1472};
1473
1474static int init_gc0310(void)
1475{
1476 return i2c_add_driver(&gc0310_driver);
1477}
1478
1479static void exit_gc0310(void)
1480{
1481
1482 i2c_del_driver(&gc0310_driver);
1483}
1484
1485module_init(init_gc0310);
1486module_exit(exit_gc0310);
1487
1488MODULE_AUTHOR("Lai, Angie <angie.lai@intel.com>");
1489MODULE_DESCRIPTION("A low-level driver for GalaxyCore GC0310 sensors");
1490MODULE_LICENSE("GPL");
1491
