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media: staging: atomisp: Remove ->power_ctrl() callback
[mirror_ubuntu-bionic-kernel.git] / drivers / staging / media / atomisp / i2c / atomisp-gc0310.c
CommitLineData
a49d2536
AC		 1/*
2 * Support for GalaxyCore GC0310 VGA camera sensor.
3 *
4 * Copyright (c) 2013 Intel Corporation. All Rights Reserved.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License version
8 * 2 as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
a49d2536
AC		 15 */
16
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>
a49d2536
AC		 29#include <linux/moduleparam.h>
30#include <media/v4l2-device.h>
31#include <linux/io.h>
25016567 32#include "../include/linux/atomisp_gmin_platform.h"
a49d2536
AC		 33
34#include "gc0310.h"
35
36/* i2c read/write stuff */
37static int gc0310_read_reg(struct i2c_client *client,
38 u16 data_length, u8 reg, u8 *val)
39{
40 int err;
41 struct i2c_msg msg[2];
42 unsigned char data[1];
43
44 if (!client->adapter) {
45 dev_err(&client->dev, "%s error, no client->adapter\n",
46 __func__);
47 return -ENODEV;
48 }
49
50 if (data_length != GC0310_8BIT) {
51 dev_err(&client->dev, "%s error, invalid data length\n",
52 __func__);
53 return -EINVAL;
54 }
55
33a2e390 56 memset(msg, 0, sizeof(msg));
a49d2536
AC		 57
58 msg[0].addr = client->addr;
59 msg[0].flags = 0;
60 msg[0].len = I2C_MSG_LENGTH;
61 msg[0].buf = data;
62
63 /* high byte goes out first */
64 data[0] = (u8)(reg & 0xff);
65
66 msg[1].addr = client->addr;
67 msg[1].len = data_length;
68 msg[1].flags = I2C_M_RD;
69 msg[1].buf = data;
70
71 err = i2c_transfer(client->adapter, msg, 2);
72 if (err != 2) {
73 if (err >= 0)
74 err = -EIO;
75 dev_err(&client->dev,
76 "read from offset 0x%x error %d", reg, err);
77 return err;
78 }
79
80 *val = 0;
81 /* high byte comes first */
82 if (data_length == GC0310_8BIT)
83 *val = (u8)data[0];
84
85 return 0;
86}
87
88static int gc0310_i2c_write(struct i2c_client *client, u16 len, u8 *data)
89{
90 struct i2c_msg msg;
91 const int num_msg = 1;
92 int ret;
93
94 msg.addr = client->addr;
95 msg.flags = 0;
96 msg.len = len;
97 msg.buf = data;
98 ret = i2c_transfer(client->adapter, &msg, 1);
99
100 return ret == num_msg ? 0 : -EIO;
101}
102
103static int gc0310_write_reg(struct i2c_client *client, u16 data_length,
104 u8 reg, u8 val)
105{
106 int ret;
107 unsigned char data[2] = {0};
108 u8 *wreg = (u8 *)data;
109 const u16 len = data_length + sizeof(u8); /* 8-bit address + data */
110
111 if (data_length != GC0310_8BIT) {
112 dev_err(&client->dev,
113 "%s error, invalid data_length\n", __func__);
114 return -EINVAL;
115 }
116
117 /* high byte goes out first */
118 *wreg = (u8)(reg & 0xff);
119
a827c1a9 120 if (data_length == GC0310_8BIT)
a49d2536 121 data[1] = (u8)(val);
a49d2536
AC		 122
123 ret = gc0310_i2c_write(client, len, data);
124 if (ret)
125 dev_err(&client->dev,
126 "write error: wrote 0x%x to offset 0x%x error %d",
127 val, reg, ret);
128
129 return ret;
130}
131
132/*
133 * gc0310_write_reg_array - Initializes a list of GC0310 registers
134 * @client: i2c driver client structure
135 * @reglist: list of registers to be written
136 *
137 * This function initializes a list of registers. When consecutive addresses
138 * are found in a row on the list, this function creates a buffer and sends
139 * consecutive data in a single i2c_transfer().
140 *
141 * __gc0310_flush_reg_array, __gc0310_buf_reg_array() and
142 * __gc0310_write_reg_is_consecutive() are internal functions to
143 * gc0310_write_reg_array_fast() and should be not used anywhere else.
144 *
145 */
146
147static int __gc0310_flush_reg_array(struct i2c_client *client,
148 struct gc0310_write_ctrl *ctrl)
149{
150 u16 size;
151
152 if (ctrl->index == 0)
153 return 0;
154
155 size = sizeof(u8) + ctrl->index; /* 8-bit address + data */
156 ctrl->buffer.addr = (u8)(ctrl->buffer.addr);
157 ctrl->index = 0;
158
159 return gc0310_i2c_write(client, size, (u8 *)&ctrl->buffer);
160}
161
162static int __gc0310_buf_reg_array(struct i2c_client *client,
163 struct gc0310_write_ctrl *ctrl,
164 const struct gc0310_reg *next)
165{
166 int size;
167
168 switch (next->type) {
169 case GC0310_8BIT:
170 size = 1;
171 ctrl->buffer.data[ctrl->index] = (u8)next->val;
172 break;
173 default:
174 return -EINVAL;
175 }
176
177 /* When first item is added, we need to store its starting address */
178 if (ctrl->index == 0)
179 ctrl->buffer.addr = next->reg;
180
181 ctrl->index += size;
182
183 /*
184 * Buffer cannot guarantee free space for u32? Better flush it to avoid
185 * possible lack of memory for next item.
186 */
187 if (ctrl->index + sizeof(u8) >= GC0310_MAX_WRITE_BUF_SIZE)
188 return __gc0310_flush_reg_array(client, ctrl);
189
190 return 0;
191}
192
193static int __gc0310_write_reg_is_consecutive(struct i2c_client *client,
194 struct gc0310_write_ctrl *ctrl,
195 const struct gc0310_reg *next)
196{
197 if (ctrl->index == 0)
198 return 1;
199
200 return ctrl->buffer.addr + ctrl->index == next->reg;
201}
202
203static int gc0310_write_reg_array(struct i2c_client *client,
204 const struct gc0310_reg *reglist)
205{
206 const struct gc0310_reg *next = reglist;
207 struct gc0310_write_ctrl ctrl;
208 int err;
209
210 ctrl.index = 0;
211 for (; next->type != GC0310_TOK_TERM; next++) {
212 switch (next->type & GC0310_TOK_MASK) {
213 case GC0310_TOK_DELAY:
214 err = __gc0310_flush_reg_array(client, &ctrl);
215 if (err)
216 return err;
217 msleep(next->val);
218 break;
219 default:
220 /*
221 * If next address is not consecutive, data needs to be
222 * flushed before proceed.
223 */
224 if (!__gc0310_write_reg_is_consecutive(client, &ctrl,
225 next)) {
226 err = __gc0310_flush_reg_array(client, &ctrl);
227 if (err)
228 return err;
229 }
230 err = __gc0310_buf_reg_array(client, &ctrl, next);
231 if (err) {
232 dev_err(&client->dev, "%s: write error, aborted\n",
233 __func__);
234 return err;
235 }
236 break;
237 }
238 }
239
240 return __gc0310_flush_reg_array(client, &ctrl);
241}
242static int gc0310_g_focal(struct v4l2_subdev *sd, s32 *val)
243{
244 *val = (GC0310_FOCAL_LENGTH_NUM << 16) | GC0310_FOCAL_LENGTH_DEM;
245 return 0;
246}
247
248static int gc0310_g_fnumber(struct v4l2_subdev *sd, s32 *val)
249{
250 /*const f number for imx*/
251 *val = (GC0310_F_NUMBER_DEFAULT_NUM << 16) | GC0310_F_NUMBER_DEM;
252 return 0;
253}
254
255static int gc0310_g_fnumber_range(struct v4l2_subdev *sd, s32 *val)
256{
257 *val = (GC0310_F_NUMBER_DEFAULT_NUM << 24) |
258 (GC0310_F_NUMBER_DEM << 16) |
259 (GC0310_F_NUMBER_DEFAULT_NUM << 8) | GC0310_F_NUMBER_DEM;
260 return 0;
261}
262
263static int gc0310_g_bin_factor_x(struct v4l2_subdev *sd, s32 *val)
264{
265 struct gc0310_device *dev = to_gc0310_sensor(sd);
266
267 *val = gc0310_res[dev->fmt_idx].bin_factor_x;
268
269 return 0;
270}
271
272static int gc0310_g_bin_factor_y(struct v4l2_subdev *sd, s32 *val)
273{
274 struct gc0310_device *dev = to_gc0310_sensor(sd);
275
276 *val = gc0310_res[dev->fmt_idx].bin_factor_y;
277
278 return 0;
279}
280
281static int gc0310_get_intg_factor(struct i2c_client *client,
282 struct camera_mipi_info *info,
283 const struct gc0310_resolution *res)
284{
285 struct v4l2_subdev *sd = i2c_get_clientdata(client);
286 struct gc0310_device *dev = to_gc0310_sensor(sd);
287 struct atomisp_sensor_mode_data *buf = &info->data;
288 u16 val;
289 u8 reg_val;
290 int ret;
291 unsigned int hori_blanking;
292 unsigned int vert_blanking;
293 unsigned int sh_delay;
294
c9d9602f 295 if (!info)
a49d2536
AC		 296 return -EINVAL;
297
298 /* pixel clock calculattion */
299 dev->vt_pix_clk_freq_mhz = 14400000; // 16.8MHz
300 buf->vt_pix_clk_freq_mhz = dev->vt_pix_clk_freq_mhz;
301 pr_info("vt_pix_clk_freq_mhz=%d\n", buf->vt_pix_clk_freq_mhz);
302
303 /* get integration time */
304 buf->coarse_integration_time_min = GC0310_COARSE_INTG_TIME_MIN;
305 buf->coarse_integration_time_max_margin =
306 GC0310_COARSE_INTG_TIME_MAX_MARGIN;
307
308 buf->fine_integration_time_min = GC0310_FINE_INTG_TIME_MIN;
309 buf->fine_integration_time_max_margin =
310 GC0310_FINE_INTG_TIME_MAX_MARGIN;
311
312 buf->fine_integration_time_def = GC0310_FINE_INTG_TIME_MIN;
313 buf->read_mode = res->bin_mode;
314
315 /* get the cropping and output resolution to ISP for this mode. */
316 /* Getting crop_horizontal_start */
317 ret = gc0310_read_reg(client, GC0310_8BIT,
318 GC0310_H_CROP_START_H, &reg_val);
319 if (ret)
320 return ret;
321 val = (reg_val & 0xFF) << 8;
322 ret = gc0310_read_reg(client, GC0310_8BIT,
323 GC0310_H_CROP_START_L, &reg_val);
324 if (ret)
325 return ret;
326 buf->crop_horizontal_start = val | (reg_val & 0xFF);
327 pr_info("crop_horizontal_start=%d\n", buf->crop_horizontal_start);
328
329 /* Getting crop_vertical_start */
330 ret = gc0310_read_reg(client, GC0310_8BIT,
331 GC0310_V_CROP_START_H, &reg_val);
332 if (ret)
333 return ret;
334 val = (reg_val & 0xFF) << 8;
335 ret = gc0310_read_reg(client, GC0310_8BIT,
336 GC0310_V_CROP_START_L, &reg_val);
337 if (ret)
338 return ret;
339 buf->crop_vertical_start = val | (reg_val & 0xFF);
340 pr_info("crop_vertical_start=%d\n", buf->crop_vertical_start);
341
342 /* Getting output_width */
343 ret = gc0310_read_reg(client, GC0310_8BIT,
344 GC0310_H_OUTSIZE_H, &reg_val);
345 if (ret)
346 return ret;
347 val = (reg_val & 0xFF) << 8;
348 ret = gc0310_read_reg(client, GC0310_8BIT,
349 GC0310_H_OUTSIZE_L, &reg_val);
350 if (ret)
351 return ret;
352 buf->output_width = val | (reg_val & 0xFF);
353 pr_info("output_width=%d\n", buf->output_width);
354
355 /* Getting output_height */
356 ret = gc0310_read_reg(client, GC0310_8BIT,
357 GC0310_V_OUTSIZE_H, &reg_val);
358 if (ret)
359 return ret;
360 val = (reg_val & 0xFF) << 8;
361 ret = gc0310_read_reg(client, GC0310_8BIT,
362 GC0310_V_OUTSIZE_L, &reg_val);
363 if (ret)
364 return ret;
365 buf->output_height = val | (reg_val & 0xFF);
366 pr_info("output_height=%d\n", buf->output_height);
367
368 buf->crop_horizontal_end = buf->crop_horizontal_start + buf->output_width - 1;
369 buf->crop_vertical_end = buf->crop_vertical_start + buf->output_height - 1;
370 pr_info("crop_horizontal_end=%d\n", buf->crop_horizontal_end);
371 pr_info("crop_vertical_end=%d\n", buf->crop_vertical_end);
372
373 /* Getting line_length_pck */
374 ret = gc0310_read_reg(client, GC0310_8BIT,
375 GC0310_H_BLANKING_H, &reg_val);
376 if (ret)
377 return ret;
378 val = (reg_val & 0xFF) << 8;
379 ret = gc0310_read_reg(client, GC0310_8BIT,
380 GC0310_H_BLANKING_L, &reg_val);
381 if (ret)
382 return ret;
383 hori_blanking = val | (reg_val & 0xFF);
384 ret = gc0310_read_reg(client, GC0310_8BIT,
385 GC0310_SH_DELAY, &reg_val);
386 if (ret)
387 return ret;
388 sh_delay = reg_val;
389 buf->line_length_pck = buf->output_width + hori_blanking + sh_delay + 4;
390 pr_info("hori_blanking=%d sh_delay=%d line_length_pck=%d\n", hori_blanking, sh_delay, buf->line_length_pck);
391
392 /* Getting frame_length_lines */
393 ret = gc0310_read_reg(client, GC0310_8BIT,
394 GC0310_V_BLANKING_H, &reg_val);
395 if (ret)
396 return ret;
397 val = (reg_val & 0xFF) << 8;
398 ret = gc0310_read_reg(client, GC0310_8BIT,
399 GC0310_V_BLANKING_L, &reg_val);
400 if (ret)
401 return ret;
402 vert_blanking = val | (reg_val & 0xFF);
403 buf->frame_length_lines = buf->output_height + vert_blanking;
404 pr_info("vert_blanking=%d frame_length_lines=%d\n", vert_blanking, buf->frame_length_lines);
405
406 buf->binning_factor_x = res->bin_factor_x ?
407 res->bin_factor_x : 1;
408 buf->binning_factor_y = res->bin_factor_y ?
409 res->bin_factor_y : 1;
410 return 0;
411}
412
413static int gc0310_set_gain(struct v4l2_subdev *sd, int gain)
414
415{
416 struct i2c_client *client = v4l2_get_subdevdata(sd);
417 int ret;
418 u8 again, dgain;
419
420 if (gain < 0x20)
421 gain = 0x20;
422 if (gain > 0x80)
423 gain = 0x80;
424
425 if (gain >= 0x20 && gain < 0x40) {
426 again = 0x0; /* sqrt(2) */
427 dgain = gain;
428 } else {
429 again = 0x2; /* 2 * sqrt(2) */
430 dgain = gain / 2;
431 }
432
433 pr_info("gain=0x%x again=0x%x dgain=0x%x\n", gain, again, dgain);
434
435 /* set analog gain */
436 ret = gc0310_write_reg(client, GC0310_8BIT,
437 GC0310_AGC_ADJ, again);
438 if (ret)
439 return ret;
440
441 /* set digital gain */
442 ret = gc0310_write_reg(client, GC0310_8BIT,
443 GC0310_DGC_ADJ, dgain);
444 if (ret)
445 return ret;
446
447 return 0;
448}
449
450static int __gc0310_set_exposure(struct v4l2_subdev *sd, int coarse_itg,
451 int gain, int digitgain)
452
453{
454 struct i2c_client *client = v4l2_get_subdevdata(sd);
455 int ret;
456
457 pr_info("coarse_itg=%d gain=%d digitgain=%d\n", coarse_itg, gain, digitgain);
458
459 /* set exposure */
460 ret = gc0310_write_reg(client, GC0310_8BIT,
461 GC0310_AEC_PK_EXPO_L,
462 coarse_itg & 0xff);
463 if (ret)
464 return ret;
465
466 ret = gc0310_write_reg(client, GC0310_8BIT,
467 GC0310_AEC_PK_EXPO_H,
468 (coarse_itg >> 8) & 0x0f);
469 if (ret)
470 return ret;
471
472 ret = gc0310_set_gain(sd, gain);
473 if (ret)
474 return ret;
475
476 return ret;
477}
478
479static int gc0310_set_exposure(struct v4l2_subdev *sd, int exposure,
480 int gain, int digitgain)
481{
482 struct gc0310_device *dev = to_gc0310_sensor(sd);
483 int ret;
484
485 mutex_lock(&dev->input_lock);
486 ret = __gc0310_set_exposure(sd, exposure, gain, digitgain);
487 mutex_unlock(&dev->input_lock);
488
489 return ret;
490}
491
492static long gc0310_s_exposure(struct v4l2_subdev *sd,
493 struct atomisp_exposure *exposure)
494{
495 int exp = exposure->integration_time[0];
496 int gain = exposure->gain[0];
497 int digitgain = exposure->gain[1];
498
499 /* we should not accept the invalid value below. */
500 if (gain == 0) {
501 struct i2c_client *client = v4l2_get_subdevdata(sd);
502 v4l2_err(client, "%s: invalid value\n", __func__);
503 return -EINVAL;
504 }
505
506 return gc0310_set_exposure(sd, exp, gain, digitgain);
507}
508
509/* TO DO */
510static int gc0310_v_flip(struct v4l2_subdev *sd, s32 value)
511{
512 return 0;
513}
514
515/* TO DO */
516static int gc0310_h_flip(struct v4l2_subdev *sd, s32 value)
517{
518 return 0;
519}
520
521static long gc0310_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
522{
523
524 switch (cmd) {
525 case ATOMISP_IOC_S_EXPOSURE:
526 return gc0310_s_exposure(sd, arg);
527 default:
528 return -EINVAL;
529 }
530 return 0;
531}
532
533/* This returns the exposure time being used. This should only be used
e17a17a0
VR		 534 * for filling in EXIF data, not for actual image processing.
535 */
a49d2536
AC		 536static int gc0310_q_exposure(struct v4l2_subdev *sd, s32 *value)
537{
538 struct i2c_client *client = v4l2_get_subdevdata(sd);
539 u8 reg_v;
540 int ret;
541
542 /* get exposure */
543 ret = gc0310_read_reg(client, GC0310_8BIT,
544 GC0310_AEC_PK_EXPO_L,
545 &reg_v);
546 if (ret)
547 goto err;
548
549 *value = reg_v;
550 ret = gc0310_read_reg(client, GC0310_8BIT,
551 GC0310_AEC_PK_EXPO_H,
552 &reg_v);
553 if (ret)
554 goto err;
555
556 *value = *value + (reg_v << 8);
557err:
558 return ret;
559}
560
561static int gc0310_s_ctrl(struct v4l2_ctrl *ctrl)
562{
563 struct gc0310_device *dev =
564 container_of(ctrl->handler, struct gc0310_device, ctrl_handler);
565 struct i2c_client *client = v4l2_get_subdevdata(&dev->sd);
566 int ret = 0;
567
568 switch (ctrl->id) {
569 case V4L2_CID_VFLIP:
570 dev_dbg(&client->dev, "%s: CID_VFLIP:%d.\n",
571 __func__, ctrl->val);
572 ret = gc0310_v_flip(&dev->sd, ctrl->val);
573 break;
574 case V4L2_CID_HFLIP:
575 dev_dbg(&client->dev, "%s: CID_HFLIP:%d.\n",
576 __func__, ctrl->val);
577 ret = gc0310_h_flip(&dev->sd, ctrl->val);
578 break;
579 default:
580 ret = -EINVAL;
581 }
582 return ret;
583}
584
585static int gc0310_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
586{
587 struct gc0310_device *dev =
588 container_of(ctrl->handler, struct gc0310_device, ctrl_handler);
589 int ret = 0;
590
591 switch (ctrl->id) {
592 case V4L2_CID_EXPOSURE_ABSOLUTE:
593 ret = gc0310_q_exposure(&dev->sd, &ctrl->val);
594 break;
595 case V4L2_CID_FOCAL_ABSOLUTE:
596 ret = gc0310_g_focal(&dev->sd, &ctrl->val);
597 break;
598 case V4L2_CID_FNUMBER_ABSOLUTE:
599 ret = gc0310_g_fnumber(&dev->sd, &ctrl->val);
600 break;
601 case V4L2_CID_FNUMBER_RANGE:
602 ret = gc0310_g_fnumber_range(&dev->sd, &ctrl->val);
603 break;
604 case V4L2_CID_BIN_FACTOR_HORZ:
605 ret = gc0310_g_bin_factor_x(&dev->sd, &ctrl->val);
606 break;
607 case V4L2_CID_BIN_FACTOR_VERT:
608 ret = gc0310_g_bin_factor_y(&dev->sd, &ctrl->val);
609 break;
610 default:
611 ret = -EINVAL;
612 }
613
614 return ret;
615}
616
617static const struct v4l2_ctrl_ops ctrl_ops = {
618 .s_ctrl = gc0310_s_ctrl,
619 .g_volatile_ctrl = gc0310_g_volatile_ctrl
620};
621
622struct v4l2_ctrl_config gc0310_controls[] = {
623 {
624 .ops = &ctrl_ops,
625 .id = V4L2_CID_EXPOSURE_ABSOLUTE,
626 .type = V4L2_CTRL_TYPE_INTEGER,
627 .name = "exposure",
628 .min = 0x0,
629 .max = 0xffff,
630 .step = 0x01,
631 .def = 0x00,
632 .flags = 0,
633 },
634 {
635 .ops = &ctrl_ops,
636 .id = V4L2_CID_VFLIP,
637 .type = V4L2_CTRL_TYPE_BOOLEAN,
638 .name = "Flip",
639 .min = 0,
640 .max = 1,
641 .step = 1,
642 .def = 0,
643 },
644 {
645 .ops = &ctrl_ops,
646 .id = V4L2_CID_HFLIP,
647 .type = V4L2_CTRL_TYPE_BOOLEAN,
648 .name = "Mirror",
649 .min = 0,
650 .max = 1,
651 .step = 1,
652 .def = 0,
653 },
654 {
655 .ops = &ctrl_ops,
656 .id = V4L2_CID_FOCAL_ABSOLUTE,
657 .type = V4L2_CTRL_TYPE_INTEGER,
658 .name = "focal length",
659 .min = GC0310_FOCAL_LENGTH_DEFAULT,
660 .max = GC0310_FOCAL_LENGTH_DEFAULT,
661 .step = 0x01,
662 .def = GC0310_FOCAL_LENGTH_DEFAULT,
663 .flags = 0,
664 },
665 {
666 .ops = &ctrl_ops,
667 .id = V4L2_CID_FNUMBER_ABSOLUTE,
668 .type = V4L2_CTRL_TYPE_INTEGER,
669 .name = "f-number",
670 .min = GC0310_F_NUMBER_DEFAULT,
671 .max = GC0310_F_NUMBER_DEFAULT,
672 .step = 0x01,
673 .def = GC0310_F_NUMBER_DEFAULT,
674 .flags = 0,
675 },
676 {
677 .ops = &ctrl_ops,
678 .id = V4L2_CID_FNUMBER_RANGE,
679 .type = V4L2_CTRL_TYPE_INTEGER,
680 .name = "f-number range",
681 .min = GC0310_F_NUMBER_RANGE,
682 .max = GC0310_F_NUMBER_RANGE,
683 .step = 0x01,
684 .def = GC0310_F_NUMBER_RANGE,
685 .flags = 0,
686 },
687 {
688 .ops = &ctrl_ops,
689 .id = V4L2_CID_BIN_FACTOR_HORZ,
690 .type = V4L2_CTRL_TYPE_INTEGER,
691 .name = "horizontal binning factor",
692 .min = 0,
693 .max = GC0310_BIN_FACTOR_MAX,
694 .step = 1,
695 .def = 0,
696 .flags = 0,
697 },
698 {
699 .ops = &ctrl_ops,
700 .id = V4L2_CID_BIN_FACTOR_VERT,
701 .type = V4L2_CTRL_TYPE_INTEGER,
702 .name = "vertical binning factor",
703 .min = 0,
704 .max = GC0310_BIN_FACTOR_MAX,
705 .step = 1,
706 .def = 0,
707 .flags = 0,
708 },
709};
710
711static int gc0310_init(struct v4l2_subdev *sd)
712{
713 int ret;
714 struct i2c_client *client = v4l2_get_subdevdata(sd);
715 struct gc0310_device *dev = to_gc0310_sensor(sd);
716
717 pr_info("%s S\n", __func__);
718 mutex_lock(&dev->input_lock);
719
720 /* set inital registers */
721 ret = gc0310_write_reg_array(client, gc0310_reset_register);
722
723 /* restore settings */
724 gc0310_res = gc0310_res_preview;
725 N_RES = N_RES_PREVIEW;
726
727 mutex_unlock(&dev->input_lock);
728
729 pr_info("%s E\n", __func__);
730 return 0;
731}
732
733static int power_ctrl(struct v4l2_subdev *sd, bool flag)
734{
735 int ret = 0;
736 struct gc0310_device *dev = to_gc0310_sensor(sd);
737 if (!dev || !dev->platform_data)
738 return -ENODEV;
739
a49d2536
AC		 740 if (flag) {
741 /* The upstream module driver (written to Crystal
742 * Cove) had this logic to pulse the rails low first.
743 * This appears to break things on the MRD7 with the
744 * X-Powers PMIC...
745 *
746 * ret = dev->platform_data->v1p8_ctrl(sd, 0);
747 * ret |= dev->platform_data->v2p8_ctrl(sd, 0);
748 * mdelay(50);
749 */
750 ret |= dev->platform_data->v1p8_ctrl(sd, 1);
751 ret |= dev->platform_data->v2p8_ctrl(sd, 1);
752 usleep_range(10000, 15000);
753 }
754
755 if (!flag || ret) {
756 ret |= dev->platform_data->v1p8_ctrl(sd, 0);
757 ret |= dev->platform_data->v2p8_ctrl(sd, 0);
758 }
759 return ret;
760}
761
762static int gpio_ctrl(struct v4l2_subdev *sd, bool flag)
763{
764 int ret;
765 struct gc0310_device *dev = to_gc0310_sensor(sd);
766
767 if (!dev || !dev->platform_data)
768 return -ENODEV;
769
a49d2536
AC		 770 /* GPIO0 == "reset" (active low), GPIO1 == "power down" */
771 if (flag) {
772 /* Pulse reset, then release power down */
773 ret = dev->platform_data->gpio0_ctrl(sd, 0);
774 usleep_range(5000, 10000);
775 ret |= dev->platform_data->gpio0_ctrl(sd, 1);
776 usleep_range(10000, 15000);
777 ret |= dev->platform_data->gpio1_ctrl(sd, 0);
778 usleep_range(10000, 15000);
779 } else {
780 ret = dev->platform_data->gpio1_ctrl(sd, 1);
781 ret |= dev->platform_data->gpio0_ctrl(sd, 0);
782 }
783 return ret;
784}
785
786
787static int power_down(struct v4l2_subdev *sd);
788
789static int power_up(struct v4l2_subdev *sd)
790{
791 struct gc0310_device *dev = to_gc0310_sensor(sd);
792 struct i2c_client *client = v4l2_get_subdevdata(sd);
793 int ret;
794
795 pr_info("%s S\n", __func__);
c9d9602f 796 if (!dev->platform_data) {
a49d2536
AC		 797 dev_err(&client->dev,
798 "no camera_sensor_platform_data");
799 return -ENODEV;
800 }
801
802 /* power control */
803 ret = power_ctrl(sd, 1);
804 if (ret)
805 goto fail_power;
806
807 /* flis clock control */
808 ret = dev->platform_data->flisclk_ctrl(sd, 1);
809 if (ret)
810 goto fail_clk;
811
812 /* gpio ctrl */
813 ret = gpio_ctrl(sd, 1);
814 if (ret) {
815 ret = gpio_ctrl(sd, 1);
816 if (ret)
817 goto fail_gpio;
818 }
819
820 msleep(100);
821
822 pr_info("%s E\n", __func__);
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
c9d9602f 841 if (!dev->platform_data) {
a49d2536
AC		 842 dev_err(&client->dev,
843 "no camera_sensor_platform_data");
844 return -ENODEV;
845 }
846
847 /* gpio ctrl */
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 /* power control */
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 if (on == 0)
871 return power_down(sd);
872 else {
873 ret = power_up(sd);
874 if (!ret)
875 return gc0310_init(sd);
876 }
877 return ret;
878}
879
880/*
881 * distance - calculate the distance
882 * @res: resolution
883 * @w: width
884 * @h: height
885 *
886 * Get the gap between resolution and w/h.
887 * res->width/height smaller than w/h wouldn't be considered.
888 * Returns the value of gap or -1 if fail.
889 */
890#define LARGEST_ALLOWED_RATIO_MISMATCH 800
891static int distance(struct gc0310_resolution *res, u32 w, u32 h)
892{
56b41836 893 unsigned int w_ratio = (res->width << 13) / w;
a49d2536
AC		 894 unsigned int h_ratio;
895 int match;
896
897 if (h == 0)
898 return -1;
6c492211 899 h_ratio = (res->height << 13) / h;
a49d2536
AC		 900 if (h_ratio == 0)
901 return -1;
902 match = abs(((w_ratio << 13) / h_ratio) - ((int)8192));
903
904 if ((w_ratio < (int)8192) || (h_ratio < (int)8192) ||
905 (match > LARGEST_ALLOWED_RATIO_MISMATCH))
906 return -1;
907
908 return w_ratio + h_ratio;
909}
910
911/* Return the nearest higher resolution index */
912static int nearest_resolution_index(int w, int h)
913{
914 int i;
915 int idx = -1;
916 int dist;
917 int min_dist = INT_MAX;
918 struct gc0310_resolution *tmp_res = NULL;
919
920 for (i = 0; i < N_RES; i++) {
921 tmp_res = &gc0310_res[i];
922 dist = distance(tmp_res, w, h);
923 if (dist == -1)
924 continue;
925 if (dist < min_dist) {
926 min_dist = dist;
927 idx = i;
928 }
929 }
930
931 return idx;
932}
933
934static int get_resolution_index(int w, int h)
935{
936 int i;
937
938 for (i = 0; i < N_RES; i++) {
939 if (w != gc0310_res[i].width)
940 continue;
941 if (h != gc0310_res[i].height)
942 continue;
943
944 return i;
945 }
946
947 return -1;
948}
949
950
951/* TODO: remove it. */
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 pr_info("%s S\n", __func__);
959
960 ret = gc0310_write_reg_array(client, gc0310_res[dev->fmt_idx].regs);
961 if (ret) {
962 dev_err(&client->dev, "gc0310 write register err.\n");
963 return ret;
964 }
965
966 pr_info("%s E\n", __func__);
967 return ret;
968}
969
970static int gc0310_set_fmt(struct v4l2_subdev *sd,
971 struct v4l2_subdev_pad_config *cfg,
972 struct v4l2_subdev_format *format)
973{
974 struct v4l2_mbus_framefmt *fmt = &format->format;
975 struct gc0310_device *dev = to_gc0310_sensor(sd);
976 struct i2c_client *client = v4l2_get_subdevdata(sd);
977 struct camera_mipi_info *gc0310_info = NULL;
978 int ret = 0;
979 int idx = 0;
980 pr_info("%s S\n", __func__);
981
982 if (format->pad)
983 return -EINVAL;
984
985 if (!fmt)
986 return -EINVAL;
987
988 gc0310_info = v4l2_get_subdev_hostdata(sd);
c9d9602f 989 if (!gc0310_info)
a49d2536
AC		 990 return -EINVAL;
991
992 mutex_lock(&dev->input_lock);
993
994 idx = nearest_resolution_index(fmt->width, fmt->height);
995 if (idx == -1) {
996 /* return the largest resolution */
997 fmt->width = gc0310_res[N_RES - 1].width;
998 fmt->height = gc0310_res[N_RES - 1].height;
999 } else {
1000 fmt->width = gc0310_res[idx].width;
1001 fmt->height = gc0310_res[idx].height;
1002 }
1003 fmt->code = MEDIA_BUS_FMT_SGRBG8_1X8;
1004
1005 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
1006 cfg->try_fmt = *fmt;
1007 mutex_unlock(&dev->input_lock);
1008 return 0;
1009 }
1010
1011 dev->fmt_idx = get_resolution_index(fmt->width, fmt->height);
1012 if (dev->fmt_idx == -1) {
1013 dev_err(&client->dev, "get resolution fail\n");
1014 mutex_unlock(&dev->input_lock);
1015 return -EINVAL;
1016 }
1017
1018 printk("%s: before gc0310_write_reg_array %s\n", __FUNCTION__,
1019 gc0310_res[dev->fmt_idx].desc);
1020 ret = startup(sd);
1021 if (ret) {
1022 dev_err(&client->dev, "gc0310 startup err\n");
1023 goto err;
1024 }
1025
1026 ret = gc0310_get_intg_factor(client, gc0310_info,
1027 &gc0310_res[dev->fmt_idx]);
1028 if (ret) {
1029 dev_err(&client->dev, "failed to get integration_factor\n");
1030 goto err;
1031 }
1032
1033 pr_info("%s E\n", __func__);
1034err:
1035 mutex_unlock(&dev->input_lock);
1036 return ret;
1037}
1038
1039static int gc0310_get_fmt(struct v4l2_subdev *sd,
1040 struct v4l2_subdev_pad_config *cfg,
1041 struct v4l2_subdev_format *format)
1042{
1043 struct v4l2_mbus_framefmt *fmt = &format->format;
1044 struct gc0310_device *dev = to_gc0310_sensor(sd);
1045
1046 if (format->pad)
1047 return -EINVAL;
1048
1049 if (!fmt)
1050 return -EINVAL;
1051
1052 fmt->width = gc0310_res[dev->fmt_idx].width;
1053 fmt->height = gc0310_res[dev->fmt_idx].height;
1054 fmt->code = MEDIA_BUS_FMT_SGRBG8_1X8;
1055
1056 return 0;
1057}
1058
1059static int gc0310_detect(struct i2c_client *client)
1060{
1061 struct i2c_adapter *adapter = client->adapter;
1062 u8 high, low;
1063 int ret;
1064 u16 id;
1065
1066 pr_info("%s S\n", __func__);
1067 if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
1068 return -ENODEV;
1069
1070 ret = gc0310_read_reg(client, GC0310_8BIT,
1071 GC0310_SC_CMMN_CHIP_ID_H, &high);
1072 if (ret) {
1073 dev_err(&client->dev, "read sensor_id_high failed\n");
1074 return -ENODEV;
1075 }
1076 ret = gc0310_read_reg(client, GC0310_8BIT,
1077 GC0310_SC_CMMN_CHIP_ID_L, &low);
1078 if (ret) {
1079 dev_err(&client->dev, "read sensor_id_low failed\n");
1080 return -ENODEV;
1081 }
1082 id = ((((u16) high) << 8) | (u16) low);
1083 pr_info("sensor ID = 0x%x\n", id);
1084
1085 if (id != GC0310_ID) {
1086 dev_err(&client->dev, "sensor ID error, read id = 0x%x, target id = 0x%x\n", id, GC0310_ID);
1087 return -ENODEV;
1088 }
1089
1090 dev_dbg(&client->dev, "detect gc0310 success\n");
1091
1092 pr_info("%s E\n", __func__);
1093
1094 return 0;
1095}
1096
1097static int gc0310_s_stream(struct v4l2_subdev *sd, int enable)
1098{
1099 struct gc0310_device *dev = to_gc0310_sensor(sd);
1100 struct i2c_client *client = v4l2_get_subdevdata(sd);
1101 int ret;
1102
1103 pr_info("%s S enable=%d\n", __func__, enable);
1104 mutex_lock(&dev->input_lock);
1105
1106 if (enable) {
1107 /* enable per frame MIPI and sensor ctrl reset */
1108 ret = gc0310_write_reg(client, GC0310_8BIT,
1109 0xFE, 0x30);
1110 if (ret) {
1111 mutex_unlock(&dev->input_lock);
1112 return ret;
1113 }
1114 }
1115
1116 ret = gc0310_write_reg(client, GC0310_8BIT,
1117 GC0310_RESET_RELATED, GC0310_REGISTER_PAGE_3);
1118 if (ret) {
1119 mutex_unlock(&dev->input_lock);
1120 return ret;
1121 }
1122
1123 ret = gc0310_write_reg(client, GC0310_8BIT, GC0310_SW_STREAM,
1124 enable ? GC0310_START_STREAMING :
1125 GC0310_STOP_STREAMING);
1126 if (ret) {
1127 mutex_unlock(&dev->input_lock);
1128 return ret;
1129 }
1130
1131 ret = gc0310_write_reg(client, GC0310_8BIT,
1132 GC0310_RESET_RELATED, GC0310_REGISTER_PAGE_0);
1133 if (ret) {
1134 mutex_unlock(&dev->input_lock);
1135 return ret;
1136 }
1137
1138 mutex_unlock(&dev->input_lock);
1139 pr_info("%s E\n", __func__);
1140 return ret;
1141}
1142
1143
1144static int gc0310_s_config(struct v4l2_subdev *sd,
1145 int irq, void *platform_data)
1146{
1147 struct gc0310_device *dev = to_gc0310_sensor(sd);
1148 struct i2c_client *client = v4l2_get_subdevdata(sd);
1149 int ret = 0;
1150
1151 pr_info("%s S\n", __func__);
c9d9602f 1152 if (!platform_data)
a49d2536
AC		 1153 return -ENODEV;
1154
1155 dev->platform_data =
1156 (struct camera_sensor_platform_data *)platform_data;
1157
1158 mutex_lock(&dev->input_lock);
1159 if (dev->platform_data->platform_init) {
1160 ret = dev->platform_data->platform_init(client);
1161 if (ret) {
1162 dev_err(&client->dev, "platform init err\n");
1163 goto platform_init_failed;
1164 }
1165 }
1166 /* power off the module, then power on it in future
1167 * as first power on by board may not fulfill the
1168 * power on sequqence needed by the module
1169 */
1170 ret = power_down(sd);
1171 if (ret) {
1172 dev_err(&client->dev, "gc0310 power-off err.\n");
1173 goto fail_power_off;
1174 }
1175
1176 ret = power_up(sd);
1177 if (ret) {
1178 dev_err(&client->dev, "gc0310 power-up err.\n");
1179 goto fail_power_on;
1180 }
1181
1182 ret = dev->platform_data->csi_cfg(sd, 1);
1183 if (ret)
1184 goto fail_csi_cfg;
1185
1186 /* config & detect sensor */
1187 ret = gc0310_detect(client);
1188 if (ret) {
1189 dev_err(&client->dev, "gc0310_detect err s_config.\n");
1190 goto fail_csi_cfg;
1191 }
1192
1193 /* turn off sensor, after probed */
1194 ret = power_down(sd);
1195 if (ret) {
1196 dev_err(&client->dev, "gc0310 power-off err.\n");
1197 goto fail_csi_cfg;
1198 }
1199 mutex_unlock(&dev->input_lock);
1200
1201 pr_info("%s E\n", __func__);
1202 return 0;
1203
1204fail_csi_cfg:
1205 dev->platform_data->csi_cfg(sd, 0);
1206fail_power_on:
1207 power_down(sd);
1208 dev_err(&client->dev, "sensor power-gating failed\n");
1209fail_power_off:
1210 if (dev->platform_data->platform_deinit)
1211 dev->platform_data->platform_deinit();
1212platform_init_failed:
1213 mutex_unlock(&dev->input_lock);
1214 return ret;
1215}
1216
1217static int gc0310_g_parm(struct v4l2_subdev *sd,
1218 struct v4l2_streamparm *param)
1219{
1220 struct gc0310_device *dev = to_gc0310_sensor(sd);
1221 struct i2c_client *client = v4l2_get_subdevdata(sd);
1222
1223 if (!param)
1224 return -EINVAL;
1225
1226 if (param->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1227 dev_err(&client->dev, "unsupported buffer type.\n");
1228 return -EINVAL;
1229 }
1230
1231 memset(param, 0, sizeof(*param));
1232 param->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1233
1234 if (dev->fmt_idx >= 0 && dev->fmt_idx < N_RES) {
1235 param->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
1236 param->parm.capture.timeperframe.numerator = 1;
1237 param->parm.capture.capturemode = dev->run_mode;
1238 param->parm.capture.timeperframe.denominator =
1239 gc0310_res[dev->fmt_idx].fps;
1240 }
1241 return 0;
1242}
1243
1244static int gc0310_s_parm(struct v4l2_subdev *sd,
1245 struct v4l2_streamparm *param)
1246{
1247 struct gc0310_device *dev = to_gc0310_sensor(sd);
1248 dev->run_mode = param->parm.capture.capturemode;
1249
1250 mutex_lock(&dev->input_lock);
1251 switch (dev->run_mode) {
1252 case CI_MODE_VIDEO:
1253 gc0310_res = gc0310_res_video;
1254 N_RES = N_RES_VIDEO;
1255 break;
1256 case CI_MODE_STILL_CAPTURE:
1257 gc0310_res = gc0310_res_still;
1258 N_RES = N_RES_STILL;
1259 break;
1260 default:
1261 gc0310_res = gc0310_res_preview;
1262 N_RES = N_RES_PREVIEW;
1263 }
1264 mutex_unlock(&dev->input_lock);
1265 return 0;
1266}
1267
1268static int gc0310_g_frame_interval(struct v4l2_subdev *sd,
1269 struct v4l2_subdev_frame_interval *interval)
1270{
1271 struct gc0310_device *dev = to_gc0310_sensor(sd);
1272
1273 interval->interval.numerator = 1;
1274 interval->interval.denominator = gc0310_res[dev->fmt_idx].fps;
1275
1276 return 0;
1277}
1278
1279static int gc0310_enum_mbus_code(struct v4l2_subdev *sd,
1280 struct v4l2_subdev_pad_config *cfg,
1281 struct v4l2_subdev_mbus_code_enum *code)
1282{
1283 if (code->index >= MAX_FMTS)
1284 return -EINVAL;
1285
1286 code->code = MEDIA_BUS_FMT_SGRBG8_1X8;
1287 return 0;
1288}
1289
1290static int gc0310_enum_frame_size(struct v4l2_subdev *sd,
1291 struct v4l2_subdev_pad_config *cfg,
1292 struct v4l2_subdev_frame_size_enum *fse)
1293{
1294 int index = fse->index;
1295
1296 if (index >= N_RES)
1297 return -EINVAL;
1298
1299 fse->min_width = gc0310_res[index].width;
1300 fse->min_height = gc0310_res[index].height;
1301 fse->max_width = gc0310_res[index].width;
1302 fse->max_height = gc0310_res[index].height;
1303
1304 return 0;
1305
1306}
1307
1308
1309static int gc0310_g_skip_frames(struct v4l2_subdev *sd, u32 *frames)
1310{
1311 struct gc0310_device *dev = to_gc0310_sensor(sd);
1312
1313 mutex_lock(&dev->input_lock);
1314 *frames = gc0310_res[dev->fmt_idx].skip_frames;
1315 mutex_unlock(&dev->input_lock);
1316
1317 return 0;
1318}
1319
1320static const struct v4l2_subdev_sensor_ops gc0310_sensor_ops = {
1321 .g_skip_frames = gc0310_g_skip_frames,
1322};
1323
1324static const struct v4l2_subdev_video_ops gc0310_video_ops = {
1325 .s_stream = gc0310_s_stream,
1326 .g_parm = gc0310_g_parm,
1327 .s_parm = gc0310_s_parm,
1328 .g_frame_interval = gc0310_g_frame_interval,
1329};
1330
1331static const struct v4l2_subdev_core_ops gc0310_core_ops = {
1332 .s_power = gc0310_s_power,
1333 .ioctl = gc0310_ioctl,
1334};
1335
1336static const struct v4l2_subdev_pad_ops gc0310_pad_ops = {
1337 .enum_mbus_code = gc0310_enum_mbus_code,
1338 .enum_frame_size = gc0310_enum_frame_size,
1339 .get_fmt = gc0310_get_fmt,
1340 .set_fmt = gc0310_set_fmt,
1341};
1342
1343static const struct v4l2_subdev_ops gc0310_ops = {
1344 .core = &gc0310_core_ops,
1345 .video = &gc0310_video_ops,
1346 .pad = &gc0310_pad_ops,
1347 .sensor = &gc0310_sensor_ops,
1348};
1349
1350static int gc0310_remove(struct i2c_client *client)
1351{
1352 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1353 struct gc0310_device *dev = to_gc0310_sensor(sd);
1354 dev_dbg(&client->dev, "gc0310_remove...\n");
1355
1356 if (dev->platform_data->platform_deinit)
1357 dev->platform_data->platform_deinit();
1358
1359 dev->platform_data->csi_cfg(sd, 0);
1360
1361 v4l2_device_unregister_subdev(sd);
1362 media_entity_cleanup(&dev->sd.entity);
1363 v4l2_ctrl_handler_free(&dev->ctrl_handler);
1364 kfree(dev);
1365
1366 return 0;
1367}
1368
e19c9205 1369static int gc0310_probe(struct i2c_client *client)
a49d2536
AC		 1370{
1371 struct gc0310_device *dev;
1372 int ret;
1373 void *pdata;
1374 unsigned int i;
1375
1376 pr_info("%s S\n", __func__);
1377 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
309167b9 1378 if (!dev)
a49d2536 1379 return -ENOMEM;
a49d2536
AC		 1380
1381 mutex_init(&dev->input_lock);
1382
1383 dev->fmt_idx = 0;
1384 v4l2_i2c_subdev_init(&(dev->sd), client, &gc0310_ops);
1385
1386 if (ACPI_COMPANION(&client->dev))
1387 pdata = gmin_camera_platform_data(&dev->sd,
1388 ATOMISP_INPUT_FORMAT_RAW_8,
1389 atomisp_bayer_order_grbg);
1390 else
1391 pdata = client->dev.platform_data;
1392
1393 if (!pdata) {
1394 ret = -EINVAL;
1395 goto out_free;
1396 }
1397
1398 ret = gc0310_s_config(&dev->sd, client->irq, pdata);
1399 if (ret)
1400 goto out_free;
1401
1402 ret = atomisp_register_i2c_module(&dev->sd, pdata, RAW_CAMERA);
1403 if (ret)
1404 goto out_free;
1405
1406 dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1407 dev->pad.flags = MEDIA_PAD_FL_SOURCE;
1408 dev->format.code = MEDIA_BUS_FMT_SGRBG8_1X8;
1409 dev->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
1410 ret =
1411 v4l2_ctrl_handler_init(&dev->ctrl_handler,
1412 ARRAY_SIZE(gc0310_controls));
1413 if (ret) {
1414 gc0310_remove(client);
1415 return ret;
1416 }
1417
1418 for (i = 0; i < ARRAY_SIZE(gc0310_controls); i++)
1419 v4l2_ctrl_new_custom(&dev->ctrl_handler, &gc0310_controls[i],
1420 NULL);
1421
1422 if (dev->ctrl_handler.error) {
1423 gc0310_remove(client);
1424 return dev->ctrl_handler.error;
1425 }
1426
1427 /* Use same lock for controls as for everything else. */
1428 dev->ctrl_handler.lock = &dev->input_lock;
1429 dev->sd.ctrl_handler = &dev->ctrl_handler;
1430
1431 ret = media_entity_pads_init(&dev->sd.entity, 1, &dev->pad);
1432 if (ret)
1433 gc0310_remove(client);
1434
1435 pr_info("%s E\n", __func__);
1436 return ret;
1437out_free:
1438 v4l2_device_unregister_subdev(&dev->sd);
1439 kfree(dev);
1440 return ret;
1441}
1442
83371ef2 1443static const struct acpi_device_id gc0310_acpi_match[] = {
a49d2536 1444 {"XXGC0310"},
6706e900 1445 {"INT0310"},
a49d2536
AC		 1446 {},
1447};
a49d2536
AC		 1448MODULE_DEVICE_TABLE(acpi, gc0310_acpi_match);
1449
a49d2536
AC		 1450static struct i2c_driver gc0310_driver = {
1451 .driver = {
e19c9205
AS		 1452 .name = "gc0310",
1453 .acpi_match_table = gc0310_acpi_match,
a49d2536 1454 },
e19c9205 1455 .probe_new = gc0310_probe,
a49d2536 1456 .remove = gc0310_remove,
a49d2536 1457};
2cb63c4c 1458module_i2c_driver(gc0310_driver);
a49d2536
AC		 1459
1460MODULE_AUTHOR("Lai, Angie <angie.lai@intel.com>");
1461MODULE_DESCRIPTION("A low-level driver for GalaxyCore GC0310 sensors");
1462MODULE_LICENSE("GPL");
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