1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Support for mt9m114 Camera Sensor.
4 *
5 * Copyright (c) 2010 Intel Corporation. All Rights Reserved.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License version
9 * 2 as published by the Free Software Foundation.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 *
17 */
18
19 #include <linux/module.h>
20 #include <linux/types.h>
21 #include <linux/kernel.h>
22 #include <linux/mm.h>
23 #include <linux/string.h>
24 #include <linux/errno.h>
25 #include <linux/init.h>
26 #include <linux/kmod.h>
27 #include <linux/device.h>
28 #include <linux/fs.h>
29 #include <linux/slab.h>
30 #include <linux/delay.h>
31 #include <linux/i2c.h>
32 #include <linux/acpi.h>
33 #include "../include/linux/atomisp_gmin_platform.h"
34 #include <media/v4l2-device.h>
35
36 #include "mt9m114.h"
37
38 #define to_mt9m114_sensor(sd) container_of(sd, struct mt9m114_device, sd)
39
40 /*
41 * TODO: use debug parameter to actually define when debug messages should
42 * be printed.
43 */
44 static int debug;
45 static int aaalock;
46 module_param(debug, int, 0644);
47 MODULE_PARM_DESC(debug, "Debug level (0-1)");
48
49 static int mt9m114_t_vflip(struct v4l2_subdev *sd, int value);
50 static int mt9m114_t_hflip(struct v4l2_subdev *sd, int value);
51 static int mt9m114_wait_state(struct i2c_client *client, int timeout);
52
53 static int
mt9m114_read_reg(struct i2c_client * client,u16 data_length,u32 reg,u32 * val)54 mt9m114_read_reg(struct i2c_client *client, u16 data_length, u32 reg, u32 *val)
55 {
56 int err;
57 struct i2c_msg msg[2];
58 unsigned char data[4];
59
60 if (!client->adapter) {
61 v4l2_err(client, "%s error, no client->adapter\n", __func__);
62 return -ENODEV;
63 }
64
65 if (data_length != MISENSOR_8BIT && data_length != MISENSOR_16BIT
66 && data_length != MISENSOR_32BIT) {
67 v4l2_err(client, "%s error, invalid data length\n", __func__);
68 return -EINVAL;
69 }
70
71 msg[0].addr = client->addr;
72 msg[0].flags = 0;
73 msg[0].len = MSG_LEN_OFFSET;
74 msg[0].buf = data;
75
76 /* high byte goes out first */
77 data[0] = (u16)(reg >> 8);
78 data[1] = (u16)(reg & 0xff);
79
80 msg[1].addr = client->addr;
81 msg[1].len = data_length;
82 msg[1].flags = I2C_M_RD;
83 msg[1].buf = data;
84
85 err = i2c_transfer(client->adapter, msg, 2);
86
87 if (err >= 0) {
88 *val = 0;
89 /* high byte comes first */
90 if (data_length == MISENSOR_8BIT)
91 *val = data[0];
92 else if (data_length == MISENSOR_16BIT)
93 *val = data[1] + (data[0] << 8);
94 else
95 *val = data[3] + (data[2] << 8) +
96 (data[1] << 16) + (data[0] << 24);
97
98 return 0;
99 }
100
101 dev_err(&client->dev, "read from offset 0x%x error %d", reg, err);
102 return err;
103 }
104
105 static int
mt9m114_write_reg(struct i2c_client * client,u16 data_length,u16 reg,u32 val)106 mt9m114_write_reg(struct i2c_client *client, u16 data_length, u16 reg, u32 val)
107 {
108 int num_msg;
109 struct i2c_msg msg;
110 unsigned char data[6] = {0};
111 __be16 *wreg;
112 int retry = 0;
113
114 if (!client->adapter) {
115 v4l2_err(client, "%s error, no client->adapter\n", __func__);
116 return -ENODEV;
117 }
118
119 if (data_length != MISENSOR_8BIT && data_length != MISENSOR_16BIT
120 && data_length != MISENSOR_32BIT) {
121 v4l2_err(client, "%s error, invalid data_length\n", __func__);
122 return -EINVAL;
123 }
124
125 memset(&msg, 0, sizeof(msg));
126
127 again:
128 msg.addr = client->addr;
129 msg.flags = 0;
130 msg.len = 2 + data_length;
131 msg.buf = data;
132
133 /* high byte goes out first */
134 wreg = (void *)data;
135 *wreg = cpu_to_be16(reg);
136
137 if (data_length == MISENSOR_8BIT) {
138 data[2] = (u8)(val);
139 } else if (data_length == MISENSOR_16BIT) {
140 u16 *wdata = (void *)&data[2];
141
142 *wdata = be16_to_cpu(*(__be16 *)&data[2]);
143 } else {
144 /* MISENSOR_32BIT */
145 u32 *wdata = (void *)&data[2];
146
147 *wdata = be32_to_cpu(*(__be32 *)&data[2]);
148 }
149
150 num_msg = i2c_transfer(client->adapter, &msg, 1);
151
152 /*
153 * HACK: Need some delay here for Rev 2 sensors otherwise some
154 * registers do not seem to load correctly.
155 */
156 mdelay(1);
157
158 if (num_msg >= 0)
159 return 0;
160
161 dev_err(&client->dev, "write error: wrote 0x%x to offset 0x%x error %d",
162 val, reg, num_msg);
163 if (retry <= I2C_RETRY_COUNT) {
164 dev_dbg(&client->dev, "retrying... %d", retry);
165 retry++;
166 msleep(20);
167 goto again;
168 }
169
170 return num_msg;
171 }
172
173 /**
174 * misensor_rmw_reg - Read/Modify/Write a value to a register in the sensor
175 * device
176 * @client: i2c driver client structure
177 * @data_length: 8/16/32-bits length
178 * @reg: register address
179 * @mask: masked out bits
180 * @set: bits set
181 *
182 * Read/modify/write a value to a register in the sensor device.
183 * Returns zero if successful, or non-zero otherwise.
184 */
185 static int
misensor_rmw_reg(struct i2c_client * client,u16 data_length,u16 reg,u32 mask,u32 set)186 misensor_rmw_reg(struct i2c_client *client, u16 data_length, u16 reg,
187 u32 mask, u32 set)
188 {
189 int err;
190 u32 val;
191
192 /* Exit when no mask */
193 if (mask == 0)
194 return 0;
195
196 /* @mask must not exceed data length */
197 switch (data_length) {
198 case MISENSOR_8BIT:
199 if (mask & ~0xff)
200 return -EINVAL;
201 break;
202 case MISENSOR_16BIT:
203 if (mask & ~0xffff)
204 return -EINVAL;
205 break;
206 case MISENSOR_32BIT:
207 break;
208 default:
209 /* Wrong @data_length */
210 return -EINVAL;
211 }
212
213 err = mt9m114_read_reg(client, data_length, reg, &val);
214 if (err) {
215 v4l2_err(client, "%s error exit, read failed\n", __func__);
216 return -EINVAL;
217 }
218
219 val &= ~mask;
220
221 /*
222 * Perform the OR function if the @set exists.
223 * Shift @set value to target bit location. @set should set only
224 * bits included in @mask.
225 *
226 * REVISIT: This function expects @set to be non-shifted. Its shift
227 * value is then defined to be equal to mask's LSB position.
228 * How about to inform values in their right offset position and avoid
229 * this unneeded shift operation?
230 */
231 set <<= ffs(mask) - 1;
232 val |= set & mask;
233
234 err = mt9m114_write_reg(client, data_length, reg, val);
235 if (err) {
236 v4l2_err(client, "%s error exit, write failed\n", __func__);
237 return -EINVAL;
238 }
239
240 return 0;
241 }
242
__mt9m114_flush_reg_array(struct i2c_client * client,struct mt9m114_write_ctrl * ctrl)243 static int __mt9m114_flush_reg_array(struct i2c_client *client,
244 struct mt9m114_write_ctrl *ctrl)
245 {
246 struct i2c_msg msg;
247 const int num_msg = 1;
248 int ret;
249 int retry = 0;
250 __be16 *data16 = (void *)&ctrl->buffer.addr;
251
252 if (ctrl->index == 0)
253 return 0;
254
255 again:
256 msg.addr = client->addr;
257 msg.flags = 0;
258 msg.len = 2 + ctrl->index;
259 *data16 = cpu_to_be16(ctrl->buffer.addr);
260 msg.buf = (u8 *)&ctrl->buffer;
261
262 ret = i2c_transfer(client->adapter, &msg, num_msg);
263 if (ret != num_msg) {
264 if (++retry <= I2C_RETRY_COUNT) {
265 dev_dbg(&client->dev, "retrying... %d\n", retry);
266 msleep(20);
267 goto again;
268 }
269 dev_err(&client->dev, "%s: i2c transfer error\n", __func__);
270 return -EIO;
271 }
272
273 ctrl->index = 0;
274
275 /*
276 * REVISIT: Previously we had a delay after writing data to sensor.
277 * But it was removed as our tests have shown it is not necessary
278 * anymore.
279 */
280
281 return 0;
282 }
283
__mt9m114_buf_reg_array(struct i2c_client * client,struct mt9m114_write_ctrl * ctrl,const struct misensor_reg * next)284 static int __mt9m114_buf_reg_array(struct i2c_client *client,
285 struct mt9m114_write_ctrl *ctrl,
286 const struct misensor_reg *next)
287 {
288 __be16 *data16;
289 __be32 *data32;
290 int err;
291
292 /* Insufficient buffer? Let's flush and get more free space. */
293 if (ctrl->index + next->length >= MT9M114_MAX_WRITE_BUF_SIZE) {
294 err = __mt9m114_flush_reg_array(client, ctrl);
295 if (err)
296 return err;
297 }
298
299 switch (next->length) {
300 case MISENSOR_8BIT:
301 ctrl->buffer.data[ctrl->index] = (u8)next->val;
302 break;
303 case MISENSOR_16BIT:
304 data16 = (__be16 *)&ctrl->buffer.data[ctrl->index];
305 *data16 = cpu_to_be16((u16)next->val);
306 break;
307 case MISENSOR_32BIT:
308 data32 = (__be32 *)&ctrl->buffer.data[ctrl->index];
309 *data32 = cpu_to_be32(next->val);
310 break;
311 default:
312 return -EINVAL;
313 }
314
315 /* When first item is added, we need to store its starting address */
316 if (ctrl->index == 0)
317 ctrl->buffer.addr = next->reg;
318
319 ctrl->index += next->length;
320
321 return 0;
322 }
323
324 static int
__mt9m114_write_reg_is_consecutive(struct i2c_client * client,struct mt9m114_write_ctrl * ctrl,const struct misensor_reg * next)325 __mt9m114_write_reg_is_consecutive(struct i2c_client *client,
326 struct mt9m114_write_ctrl *ctrl,
327 const struct misensor_reg *next)
328 {
329 if (ctrl->index == 0)
330 return 1;
331
332 return ctrl->buffer.addr + ctrl->index == next->reg;
333 }
334
335 /*
336 * mt9m114_write_reg_array - Initializes a list of mt9m114 registers
337 * @client: i2c driver client structure
338 * @reglist: list of registers to be written
339 * @poll: completion polling requirement
340 * This function initializes a list of registers. When consecutive addresses
341 * are found in a row on the list, this function creates a buffer and sends
342 * consecutive data in a single i2c_transfer().
343 *
344 * __mt9m114_flush_reg_array, __mt9m114_buf_reg_array() and
345 * __mt9m114_write_reg_is_consecutive() are internal functions to
346 * mt9m114_write_reg_array() and should be not used anywhere else.
347 *
348 */
mt9m114_write_reg_array(struct i2c_client * client,const struct misensor_reg * reglist,int poll)349 static int mt9m114_write_reg_array(struct i2c_client *client,
350 const struct misensor_reg *reglist,
351 int poll)
352 {
353 const struct misensor_reg *next = reglist;
354 struct mt9m114_write_ctrl ctrl;
355 int err;
356
357 if (poll == PRE_POLLING) {
358 err = mt9m114_wait_state(client, MT9M114_WAIT_STAT_TIMEOUT);
359 if (err)
360 return err;
361 }
362
363 ctrl.index = 0;
364 for (; next->length != MISENSOR_TOK_TERM; next++) {
365 switch (next->length & MISENSOR_TOK_MASK) {
366 case MISENSOR_TOK_DELAY:
367 err = __mt9m114_flush_reg_array(client, &ctrl);
368 if (err)
369 return err;
370 msleep(next->val);
371 break;
372 case MISENSOR_TOK_RMW:
373 err = __mt9m114_flush_reg_array(client, &ctrl);
374 err |= misensor_rmw_reg(client,
375 next->length &
376 ~MISENSOR_TOK_RMW,
377 next->reg, next->val,
378 next->val2);
379 if (err) {
380 dev_err(&client->dev, "%s read err. aborted\n",
381 __func__);
382 return -EINVAL;
383 }
384 break;
385 default:
386 /*
387 * If next address is not consecutive, data needs to be
388 * flushed before proceed.
389 */
390 if (!__mt9m114_write_reg_is_consecutive(client, &ctrl,
391 next)) {
392 err = __mt9m114_flush_reg_array(client, &ctrl);
393 if (err)
394 return err;
395 }
396 err = __mt9m114_buf_reg_array(client, &ctrl, next);
397 if (err) {
398 v4l2_err(client, "%s: write error, aborted\n",
399 __func__);
400 return err;
401 }
402 break;
403 }
404 }
405
406 err = __mt9m114_flush_reg_array(client, &ctrl);
407 if (err)
408 return err;
409
410 if (poll == POST_POLLING)
411 return mt9m114_wait_state(client, MT9M114_WAIT_STAT_TIMEOUT);
412
413 return 0;
414 }
415
mt9m114_wait_state(struct i2c_client * client,int timeout)416 static int mt9m114_wait_state(struct i2c_client *client, int timeout)
417 {
418 int ret;
419 unsigned int val;
420
421 while (timeout-- > 0) {
422 ret = mt9m114_read_reg(client, MISENSOR_16BIT, 0x0080, &val);
423 if (ret)
424 return ret;
425 if ((val & 0x2) == 0)
426 return 0;
427 msleep(20);
428 }
429
430 return -EINVAL;
431 }
432
mt9m114_set_suspend(struct v4l2_subdev * sd)433 static int mt9m114_set_suspend(struct v4l2_subdev *sd)
434 {
435 struct i2c_client *client = v4l2_get_subdevdata(sd);
436
437 return mt9m114_write_reg_array(client,
438 mt9m114_standby_reg, POST_POLLING);
439 }
440
mt9m114_init_common(struct v4l2_subdev * sd)441 static int mt9m114_init_common(struct v4l2_subdev *sd)
442 {
443 struct i2c_client *client = v4l2_get_subdevdata(sd);
444
445 return mt9m114_write_reg_array(client, mt9m114_common, PRE_POLLING);
446 }
447
power_ctrl(struct v4l2_subdev * sd,bool flag)448 static int power_ctrl(struct v4l2_subdev *sd, bool flag)
449 {
450 int ret;
451 struct mt9m114_device *dev = to_mt9m114_sensor(sd);
452
453 if (!dev || !dev->platform_data)
454 return -ENODEV;
455
456 if (flag) {
457 ret = dev->platform_data->v2p8_ctrl(sd, 1);
458 if (ret == 0) {
459 ret = dev->platform_data->v1p8_ctrl(sd, 1);
460 if (ret)
461 ret = dev->platform_data->v2p8_ctrl(sd, 0);
462 }
463 } else {
464 ret = dev->platform_data->v2p8_ctrl(sd, 0);
465 ret = dev->platform_data->v1p8_ctrl(sd, 0);
466 }
467 return ret;
468 }
469
gpio_ctrl(struct v4l2_subdev * sd,bool flag)470 static int gpio_ctrl(struct v4l2_subdev *sd, bool flag)
471 {
472 int ret;
473 struct mt9m114_device *dev = to_mt9m114_sensor(sd);
474
475 if (!dev || !dev->platform_data)
476 return -ENODEV;
477
478 /*
479 * Note: current modules wire only one GPIO signal (RESET#),
480 * but the schematic wires up two to the connector. BIOS
481 * versions have been unfortunately inconsistent with which
482 * ACPI index RESET# is on, so hit both
483 */
484
485 if (flag) {
486 ret = dev->platform_data->gpio0_ctrl(sd, 0);
487 ret = dev->platform_data->gpio1_ctrl(sd, 0);
488 msleep(60);
489 ret |= dev->platform_data->gpio0_ctrl(sd, 1);
490 ret |= dev->platform_data->gpio1_ctrl(sd, 1);
491 } else {
492 ret = dev->platform_data->gpio0_ctrl(sd, 0);
493 ret = dev->platform_data->gpio1_ctrl(sd, 0);
494 }
495 return ret;
496 }
497
power_up(struct v4l2_subdev * sd)498 static int power_up(struct v4l2_subdev *sd)
499 {
500 struct mt9m114_device *dev = to_mt9m114_sensor(sd);
501 struct i2c_client *client = v4l2_get_subdevdata(sd);
502 int ret;
503
504 if (!dev->platform_data) {
505 dev_err(&client->dev, "no camera_sensor_platform_data");
506 return -ENODEV;
507 }
508
509 /* power control */
510 ret = power_ctrl(sd, 1);
511 if (ret)
512 goto fail_power;
513
514 /* flis clock control */
515 ret = dev->platform_data->flisclk_ctrl(sd, 1);
516 if (ret)
517 goto fail_clk;
518
519 /* gpio ctrl */
520 ret = gpio_ctrl(sd, 1);
521 if (ret)
522 dev_err(&client->dev, "gpio failed 1\n");
523 /*
524 * according to DS, 44ms is needed between power up and first i2c
525 * commend
526 */
527 msleep(50);
528
529 return 0;
530
531 fail_clk:
532 dev->platform_data->flisclk_ctrl(sd, 0);
533 fail_power:
534 power_ctrl(sd, 0);
535 dev_err(&client->dev, "sensor power-up failed\n");
536
537 return ret;
538 }
539
power_down(struct v4l2_subdev * sd)540 static int power_down(struct v4l2_subdev *sd)
541 {
542 struct mt9m114_device *dev = to_mt9m114_sensor(sd);
543 struct i2c_client *client = v4l2_get_subdevdata(sd);
544 int ret;
545
546 if (!dev->platform_data) {
547 dev_err(&client->dev, "no camera_sensor_platform_data");
548 return -ENODEV;
549 }
550
551 ret = dev->platform_data->flisclk_ctrl(sd, 0);
552 if (ret)
553 dev_err(&client->dev, "flisclk failed\n");
554
555 /* gpio ctrl */
556 ret = gpio_ctrl(sd, 0);
557 if (ret)
558 dev_err(&client->dev, "gpio failed 1\n");
559
560 /* power control */
561 ret = power_ctrl(sd, 0);
562 if (ret)
563 dev_err(&client->dev, "vprog failed.\n");
564
565 /* according to DS, 20ms is needed after power down */
566 msleep(20);
567
568 return ret;
569 }
570
mt9m114_s_power(struct v4l2_subdev * sd,int power)571 static int mt9m114_s_power(struct v4l2_subdev *sd, int power)
572 {
573 if (power == 0)
574 return power_down(sd);
575
576 if (power_up(sd))
577 return -EINVAL;
578
579 return mt9m114_init_common(sd);
580 }
581
582 /*
583 * distance - calculate the distance
584 * @res: resolution
585 * @w: width
586 * @h: height
587 *
588 * Get the gap between resolution and w/h.
589 * res->width/height smaller than w/h wouldn't be considered.
590 * Returns the value of gap or -1 if fail.
591 */
592 #define LARGEST_ALLOWED_RATIO_MISMATCH 600
distance(struct mt9m114_res_struct const * res,u32 w,u32 h)593 static int distance(struct mt9m114_res_struct const *res, u32 w, u32 h)
594 {
595 unsigned int w_ratio;
596 unsigned int h_ratio;
597 int match;
598
599 if (w == 0)
600 return -1;
601 w_ratio = (res->width << 13) / w;
602 if (h == 0)
603 return -1;
604 h_ratio = (res->height << 13) / h;
605 if (h_ratio == 0)
606 return -1;
607 match = abs(((w_ratio << 13) / h_ratio) - 8192);
608
609 if ((w_ratio < 8192) || (h_ratio < 8192) ||
610 (match > LARGEST_ALLOWED_RATIO_MISMATCH))
611 return -1;
612
613 return w_ratio + h_ratio;
614 }
615
616 /* Return the nearest higher resolution index */
nearest_resolution_index(int w,int h)617 static int nearest_resolution_index(int w, int h)
618 {
619 int i;
620 int idx = -1;
621 int dist;
622 int min_dist = INT_MAX;
623 const struct mt9m114_res_struct *tmp_res = NULL;
624
625 for (i = 0; i < ARRAY_SIZE(mt9m114_res); i++) {
626 tmp_res = &mt9m114_res[i];
627 dist = distance(tmp_res, w, h);
628 if (dist == -1)
629 continue;
630 if (dist < min_dist) {
631 min_dist = dist;
632 idx = i;
633 }
634 }
635
636 return idx;
637 }
638
mt9m114_try_res(u32 * w,u32 * h)639 static int mt9m114_try_res(u32 *w, u32 *h)
640 {
641 int idx = 0;
642
643 if ((*w > MT9M114_RES_960P_SIZE_H)
644 || (*h > MT9M114_RES_960P_SIZE_V)) {
645 *w = MT9M114_RES_960P_SIZE_H;
646 *h = MT9M114_RES_960P_SIZE_V;
647 } else {
648 idx = nearest_resolution_index(*w, *h);
649
650 /*
651 * nearest_resolution_index() doesn't return smaller
652 * resolutions. If it fails, it means the requested
653 * resolution is higher than wecan support. Fallback
654 * to highest possible resolution in this case.
655 */
656 if (idx == -1)
657 idx = ARRAY_SIZE(mt9m114_res) - 1;
658
659 *w = mt9m114_res[idx].width;
660 *h = mt9m114_res[idx].height;
661 }
662
663 return 0;
664 }
665
mt9m114_to_res(u32 w,u32 h)666 static struct mt9m114_res_struct *mt9m114_to_res(u32 w, u32 h)
667 {
668 int index;
669
670 for (index = 0; index < N_RES; index++) {
671 if ((mt9m114_res[index].width == w) &&
672 (mt9m114_res[index].height == h))
673 break;
674 }
675
676 /* No mode found */
677 if (index >= N_RES)
678 return NULL;
679
680 return &mt9m114_res[index];
681 }
682
mt9m114_res2size(struct v4l2_subdev * sd,int * h_size,int * v_size)683 static int mt9m114_res2size(struct v4l2_subdev *sd, int *h_size, int *v_size)
684 {
685 struct mt9m114_device *dev = to_mt9m114_sensor(sd);
686 unsigned short hsize;
687 unsigned short vsize;
688
689 switch (dev->res) {
690 case MT9M114_RES_736P:
691 hsize = MT9M114_RES_736P_SIZE_H;
692 vsize = MT9M114_RES_736P_SIZE_V;
693 break;
694 case MT9M114_RES_864P:
695 hsize = MT9M114_RES_864P_SIZE_H;
696 vsize = MT9M114_RES_864P_SIZE_V;
697 break;
698 case MT9M114_RES_960P:
699 hsize = MT9M114_RES_960P_SIZE_H;
700 vsize = MT9M114_RES_960P_SIZE_V;
701 break;
702 default:
703 v4l2_err(sd, "%s: Resolution 0x%08x unknown\n", __func__,
704 dev->res);
705 return -EINVAL;
706 }
707
708 if (h_size)
709 *h_size = hsize;
710 if (v_size)
711 *v_size = vsize;
712
713 return 0;
714 }
715
mt9m114_get_intg_factor(struct i2c_client * client,struct camera_mipi_info * info,const struct mt9m114_res_struct * res)716 static int mt9m114_get_intg_factor(struct i2c_client *client,
717 struct camera_mipi_info *info,
718 const struct mt9m114_res_struct *res)
719 {
720 struct atomisp_sensor_mode_data *buf = &info->data;
721 u32 reg_val;
722 int ret;
723
724 if (!info)
725 return -EINVAL;
726
727 ret = mt9m114_read_reg(client, MISENSOR_32BIT,
728 REG_PIXEL_CLK, ®_val);
729 if (ret)
730 return ret;
731 buf->vt_pix_clk_freq_mhz = reg_val;
732
733 /* get integration time */
734 buf->coarse_integration_time_min = MT9M114_COARSE_INTG_TIME_MIN;
735 buf->coarse_integration_time_max_margin =
736 MT9M114_COARSE_INTG_TIME_MAX_MARGIN;
737
738 buf->fine_integration_time_min = MT9M114_FINE_INTG_TIME_MIN;
739 buf->fine_integration_time_max_margin =
740 MT9M114_FINE_INTG_TIME_MAX_MARGIN;
741
742 buf->fine_integration_time_def = MT9M114_FINE_INTG_TIME_MIN;
743
744 buf->frame_length_lines = res->lines_per_frame;
745 buf->line_length_pck = res->pixels_per_line;
746 buf->read_mode = res->bin_mode;
747
748 /* get the cropping and output resolution to ISP for this mode. */
749 ret = mt9m114_read_reg(client, MISENSOR_16BIT,
750 REG_H_START, ®_val);
751 if (ret)
752 return ret;
753 buf->crop_horizontal_start = reg_val;
754
755 ret = mt9m114_read_reg(client, MISENSOR_16BIT,
756 REG_V_START, ®_val);
757 if (ret)
758 return ret;
759 buf->crop_vertical_start = reg_val;
760
761 ret = mt9m114_read_reg(client, MISENSOR_16BIT,
762 REG_H_END, ®_val);
763 if (ret)
764 return ret;
765 buf->crop_horizontal_end = reg_val;
766
767 ret = mt9m114_read_reg(client, MISENSOR_16BIT,
768 REG_V_END, ®_val);
769 if (ret)
770 return ret;
771 buf->crop_vertical_end = reg_val;
772
773 ret = mt9m114_read_reg(client, MISENSOR_16BIT,
774 REG_WIDTH, ®_val);
775 if (ret)
776 return ret;
777 buf->output_width = reg_val;
778
779 ret = mt9m114_read_reg(client, MISENSOR_16BIT,
780 REG_HEIGHT, ®_val);
781 if (ret)
782 return ret;
783 buf->output_height = reg_val;
784
785 ret = mt9m114_read_reg(client, MISENSOR_16BIT,
786 REG_TIMING_HTS, ®_val);
787 if (ret)
788 return ret;
789 buf->line_length_pck = reg_val;
790
791 ret = mt9m114_read_reg(client, MISENSOR_16BIT,
792 REG_TIMING_VTS, ®_val);
793 if (ret)
794 return ret;
795 buf->frame_length_lines = reg_val;
796
797 buf->binning_factor_x = res->bin_factor_x ?
798 res->bin_factor_x : 1;
799 buf->binning_factor_y = res->bin_factor_y ?
800 res->bin_factor_y : 1;
801 return 0;
802 }
803
mt9m114_get_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * format)804 static int mt9m114_get_fmt(struct v4l2_subdev *sd,
805 struct v4l2_subdev_state *sd_state,
806 struct v4l2_subdev_format *format)
807 {
808 struct v4l2_mbus_framefmt *fmt = &format->format;
809 int width, height;
810 int ret;
811
812 if (format->pad)
813 return -EINVAL;
814 fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
815
816 ret = mt9m114_res2size(sd, &width, &height);
817 if (ret)
818 return ret;
819 fmt->width = width;
820 fmt->height = height;
821
822 return 0;
823 }
824
mt9m114_set_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * format)825 static int mt9m114_set_fmt(struct v4l2_subdev *sd,
826 struct v4l2_subdev_state *sd_state,
827 struct v4l2_subdev_format *format)
828 {
829 struct v4l2_mbus_framefmt *fmt = &format->format;
830 struct i2c_client *c = v4l2_get_subdevdata(sd);
831 struct mt9m114_device *dev = to_mt9m114_sensor(sd);
832 struct mt9m114_res_struct *res_index;
833 u32 width = fmt->width;
834 u32 height = fmt->height;
835 struct camera_mipi_info *mt9m114_info = NULL;
836
837 int ret;
838
839 if (format->pad)
840 return -EINVAL;
841 dev->streamon = 0;
842 dev->first_exp = MT9M114_DEFAULT_FIRST_EXP;
843
844 mt9m114_info = v4l2_get_subdev_hostdata(sd);
845 if (!mt9m114_info)
846 return -EINVAL;
847
848 mt9m114_try_res(&width, &height);
849 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
850 sd_state->pads->try_fmt = *fmt;
851 return 0;
852 }
853 res_index = mt9m114_to_res(width, height);
854
855 /* Sanity check */
856 if (unlikely(!res_index)) {
857 WARN_ON(1);
858 return -EINVAL;
859 }
860
861 switch (res_index->res) {
862 case MT9M114_RES_736P:
863 ret = mt9m114_write_reg_array(c, mt9m114_736P_init, NO_POLLING);
864 ret += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE,
865 MISENSOR_R_MODE_MASK, MISENSOR_NORMAL_SET);
866 break;
867 case MT9M114_RES_864P:
868 ret = mt9m114_write_reg_array(c, mt9m114_864P_init, NO_POLLING);
869 ret += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE,
870 MISENSOR_R_MODE_MASK, MISENSOR_NORMAL_SET);
871 break;
872 case MT9M114_RES_960P:
873 ret = mt9m114_write_reg_array(c, mt9m114_976P_init, NO_POLLING);
874 /* set sensor read_mode to Normal */
875 ret += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE,
876 MISENSOR_R_MODE_MASK, MISENSOR_NORMAL_SET);
877 break;
878 default:
879 v4l2_err(sd, "set resolution: %d failed!\n", res_index->res);
880 return -EINVAL;
881 }
882
883 if (ret)
884 return -EINVAL;
885
886 ret = mt9m114_write_reg_array(c, mt9m114_chgstat_reg, POST_POLLING);
887 if (ret < 0)
888 return ret;
889
890 if (mt9m114_set_suspend(sd))
891 return -EINVAL;
892
893 if (dev->res != res_index->res) {
894 int index;
895
896 /* Switch to different size */
897 if (width <= 640) {
898 dev->nctx = 0x00; /* Set for context A */
899 } else {
900 /*
901 * Context B is used for resolutions larger than 640x480
902 * Using YUV for Context B.
903 */
904 dev->nctx = 0x01; /* set for context B */
905 }
906
907 /*
908 * Marked current sensor res as being "used"
909 *
910 * REVISIT: We don't need to use an "used" field on each mode
911 * list entry to know which mode is selected. If this
912 * information is really necessary, how about to use a single
913 * variable on sensor dev struct?
914 */
915 for (index = 0; index < N_RES; index++) {
916 if ((width == mt9m114_res[index].width) &&
917 (height == mt9m114_res[index].height)) {
918 mt9m114_res[index].used = true;
919 continue;
920 }
921 mt9m114_res[index].used = false;
922 }
923 }
924 ret = mt9m114_get_intg_factor(c, mt9m114_info,
925 &mt9m114_res[res_index->res]);
926 if (ret) {
927 dev_err(&c->dev, "failed to get integration_factor\n");
928 return -EINVAL;
929 }
930 /*
931 * mt9m114 - we don't poll for context switch
932 * because it does not happen with streaming disabled.
933 */
934 dev->res = res_index->res;
935
936 fmt->width = width;
937 fmt->height = height;
938 fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
939 return 0;
940 }
941
942 /* TODO: Update to SOC functions, remove exposure and gain */
mt9m114_g_focal(struct v4l2_subdev * sd,s32 * val)943 static int mt9m114_g_focal(struct v4l2_subdev *sd, s32 *val)
944 {
945 *val = (MT9M114_FOCAL_LENGTH_NUM << 16) | MT9M114_FOCAL_LENGTH_DEM;
946 return 0;
947 }
948
mt9m114_g_fnumber(struct v4l2_subdev * sd,s32 * val)949 static int mt9m114_g_fnumber(struct v4l2_subdev *sd, s32 *val)
950 {
951 /* const f number for mt9m114 */
952 *val = (MT9M114_F_NUMBER_DEFAULT_NUM << 16) | MT9M114_F_NUMBER_DEM;
953 return 0;
954 }
955
mt9m114_g_fnumber_range(struct v4l2_subdev * sd,s32 * val)956 static int mt9m114_g_fnumber_range(struct v4l2_subdev *sd, s32 *val)
957 {
958 *val = (MT9M114_F_NUMBER_DEFAULT_NUM << 24) |
959 (MT9M114_F_NUMBER_DEM << 16) |
960 (MT9M114_F_NUMBER_DEFAULT_NUM << 8) | MT9M114_F_NUMBER_DEM;
961 return 0;
962 }
963
964 /* Horizontal flip the image. */
mt9m114_g_hflip(struct v4l2_subdev * sd,s32 * val)965 static int mt9m114_g_hflip(struct v4l2_subdev *sd, s32 *val)
966 {
967 struct i2c_client *c = v4l2_get_subdevdata(sd);
968 int ret;
969 u32 data;
970
971 ret = mt9m114_read_reg(c, MISENSOR_16BIT,
972 (u32)MISENSOR_READ_MODE, &data);
973 if (ret)
974 return ret;
975 *val = !!(data & MISENSOR_HFLIP_MASK);
976
977 return 0;
978 }
979
mt9m114_g_vflip(struct v4l2_subdev * sd,s32 * val)980 static int mt9m114_g_vflip(struct v4l2_subdev *sd, s32 *val)
981 {
982 struct i2c_client *c = v4l2_get_subdevdata(sd);
983 int ret;
984 u32 data;
985
986 ret = mt9m114_read_reg(c, MISENSOR_16BIT,
987 (u32)MISENSOR_READ_MODE, &data);
988 if (ret)
989 return ret;
990 *val = !!(data & MISENSOR_VFLIP_MASK);
991
992 return 0;
993 }
994
mt9m114_s_exposure(struct v4l2_subdev * sd,struct atomisp_exposure * exposure)995 static long mt9m114_s_exposure(struct v4l2_subdev *sd,
996 struct atomisp_exposure *exposure)
997 {
998 struct i2c_client *client = v4l2_get_subdevdata(sd);
999 struct mt9m114_device *dev = to_mt9m114_sensor(sd);
1000 int ret = 0;
1001 unsigned int coarse_integration = 0;
1002 unsigned int f_lines = 0;
1003 unsigned int frame_len_lines = 0; /* ExposureTime.FrameLengthLines; */
1004 unsigned int analog_gain, digital_gain;
1005 u32 analog_gain_to_write = 0;
1006
1007 dev_dbg(&client->dev, "%s(0x%X 0x%X 0x%X)\n", __func__,
1008 exposure->integration_time[0], exposure->gain[0],
1009 exposure->gain[1]);
1010
1011 coarse_integration = exposure->integration_time[0];
1012 /*
1013 * fine_integration = ExposureTime.FineIntegrationTime;
1014 * frame_len_lines = ExposureTime.FrameLengthLines;
1015 */
1016 f_lines = mt9m114_res[dev->res].lines_per_frame;
1017 analog_gain = exposure->gain[0];
1018 digital_gain = exposure->gain[1];
1019 if (!dev->streamon) {
1020 /*Save the first exposure values while stream is off*/
1021 dev->first_exp = coarse_integration;
1022 dev->first_gain = analog_gain;
1023 dev->first_diggain = digital_gain;
1024 }
1025 /* digital_gain = 0x400 * (((u16) digital_gain) >> 8) + */
1026 /* ((unsigned int)(0x400 * (((u16) digital_gain) & 0xFF)) >>8); */
1027
1028 /* set frame length */
1029 if (f_lines < coarse_integration + 6)
1030 f_lines = coarse_integration + 6;
1031 if (f_lines < frame_len_lines)
1032 f_lines = frame_len_lines;
1033 ret = mt9m114_write_reg(client, MISENSOR_16BIT, 0x300A, f_lines);
1034 if (ret) {
1035 v4l2_err(client, "%s: fail to set f_lines\n", __func__);
1036 return -EINVAL;
1037 }
1038
1039 /* set coarse integration */
1040 /*
1041 * 3A provide real exposure time.
1042 * should not translate to any value here.
1043 */
1044 ret = mt9m114_write_reg(client, MISENSOR_16BIT,
1045 REG_EXPO_COARSE, (u16)(coarse_integration));
1046 if (ret) {
1047 v4l2_err(client, "%s: fail to set exposure time\n", __func__);
1048 return -EINVAL;
1049 }
1050
1051 /*
1052 * set analog/digital gain
1053 switch(analog_gain)
1054 {
1055 case 0:
1056 analog_gain_to_write = 0x0;
1057 break;
1058 case 1:
1059 analog_gain_to_write = 0x20;
1060 break;
1061 case 2:
1062 analog_gain_to_write = 0x60;
1063 break;
1064 case 4:
1065 analog_gain_to_write = 0xA0;
1066 break;
1067 case 8:
1068 analog_gain_to_write = 0xE0;
1069 break;
1070 default:
1071 analog_gain_to_write = 0x20;
1072 break;
1073 }
1074 */
1075 if (digital_gain >= 16 || digital_gain <= 1)
1076 digital_gain = 1;
1077 /*
1078 * analog_gain_to_write = (u16)((digital_gain << 12)
1079 * | analog_gain_to_write);
1080 */
1081 analog_gain_to_write = (u16)((digital_gain << 12) | (u16)analog_gain);
1082 ret = mt9m114_write_reg(client, MISENSOR_16BIT,
1083 REG_GAIN, analog_gain_to_write);
1084 if (ret) {
1085 v4l2_err(client, "%s: fail to set analog_gain_to_write\n",
1086 __func__);
1087 return -EINVAL;
1088 }
1089
1090 return ret;
1091 }
1092
mt9m114_ioctl(struct v4l2_subdev * sd,unsigned int cmd,void * arg)1093 static long mt9m114_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
1094 {
1095 switch (cmd) {
1096 case ATOMISP_IOC_S_EXPOSURE:
1097 return mt9m114_s_exposure(sd, arg);
1098 default:
1099 return -EINVAL;
1100 }
1101
1102 return 0;
1103 }
1104
1105 /*
1106 * This returns the exposure time being used. This should only be used
1107 * for filling in EXIF data, not for actual image processing.
1108 */
mt9m114_g_exposure(struct v4l2_subdev * sd,s32 * value)1109 static int mt9m114_g_exposure(struct v4l2_subdev *sd, s32 *value)
1110 {
1111 struct i2c_client *client = v4l2_get_subdevdata(sd);
1112 u32 coarse;
1113 int ret;
1114
1115 /* the fine integration time is currently not calculated */
1116 ret = mt9m114_read_reg(client, MISENSOR_16BIT,
1117 REG_EXPO_COARSE, &coarse);
1118 if (ret)
1119 return ret;
1120
1121 *value = coarse;
1122 return 0;
1123 }
1124
1125 /*
1126 * This function will return the sensor supported max exposure zone number.
1127 * the sensor which supports max exposure zone number is 1.
1128 */
mt9m114_g_exposure_zone_num(struct v4l2_subdev * sd,s32 * val)1129 static int mt9m114_g_exposure_zone_num(struct v4l2_subdev *sd, s32 *val)
1130 {
1131 *val = 1;
1132
1133 return 0;
1134 }
1135
1136 /*
1137 * set exposure metering, average/center_weighted/spot/matrix.
1138 */
mt9m114_s_exposure_metering(struct v4l2_subdev * sd,s32 val)1139 static int mt9m114_s_exposure_metering(struct v4l2_subdev *sd, s32 val)
1140 {
1141 struct i2c_client *client = v4l2_get_subdevdata(sd);
1142 int ret;
1143
1144 switch (val) {
1145 case V4L2_EXPOSURE_METERING_SPOT:
1146 ret = mt9m114_write_reg_array(client, mt9m114_exp_average,
1147 NO_POLLING);
1148 if (ret) {
1149 dev_err(&client->dev, "write exp_average reg err.\n");
1150 return ret;
1151 }
1152 break;
1153 case V4L2_EXPOSURE_METERING_CENTER_WEIGHTED:
1154 default:
1155 ret = mt9m114_write_reg_array(client, mt9m114_exp_center,
1156 NO_POLLING);
1157 if (ret) {
1158 dev_err(&client->dev, "write exp_default reg err");
1159 return ret;
1160 }
1161 }
1162
1163 return 0;
1164 }
1165
1166 /*
1167 * This function is for touch exposure feature.
1168 */
mt9m114_s_exposure_selection(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_selection * sel)1169 static int mt9m114_s_exposure_selection(struct v4l2_subdev *sd,
1170 struct v4l2_subdev_state *sd_state,
1171 struct v4l2_subdev_selection *sel)
1172 {
1173 struct i2c_client *client = v4l2_get_subdevdata(sd);
1174 struct misensor_reg exp_reg;
1175 int width, height;
1176 int grid_width, grid_height;
1177 int grid_left, grid_top, grid_right, grid_bottom;
1178 int win_left, win_top, win_right, win_bottom;
1179 int i, j;
1180 int ret;
1181
1182 if (sel->which != V4L2_SUBDEV_FORMAT_TRY &&
1183 sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)
1184 return -EINVAL;
1185
1186 grid_left = sel->r.left;
1187 grid_top = sel->r.top;
1188 grid_right = sel->r.left + sel->r.width - 1;
1189 grid_bottom = sel->r.top + sel->r.height - 1;
1190
1191 ret = mt9m114_res2size(sd, &width, &height);
1192 if (ret)
1193 return ret;
1194
1195 grid_width = width / 5;
1196 grid_height = height / 5;
1197
1198 if (grid_width && grid_height) {
1199 win_left = grid_left / grid_width;
1200 win_top = grid_top / grid_height;
1201 win_right = grid_right / grid_width;
1202 win_bottom = grid_bottom / grid_height;
1203 } else {
1204 dev_err(&client->dev, "Incorrect exp grid.\n");
1205 return -EINVAL;
1206 }
1207
1208 win_left = clamp_t(int, win_left, 0, 4);
1209 win_top = clamp_t(int, win_top, 0, 4);
1210 win_right = clamp_t(int, win_right, 0, 4);
1211 win_bottom = clamp_t(int, win_bottom, 0, 4);
1212
1213 ret = mt9m114_write_reg_array(client, mt9m114_exp_average, NO_POLLING);
1214 if (ret) {
1215 dev_err(&client->dev, "write exp_average reg err.\n");
1216 return ret;
1217 }
1218
1219 for (i = win_top; i <= win_bottom; i++) {
1220 for (j = win_left; j <= win_right; j++) {
1221 exp_reg = mt9m114_exp_win[i][j];
1222
1223 ret = mt9m114_write_reg(client, exp_reg.length,
1224 exp_reg.reg, exp_reg.val);
1225 if (ret) {
1226 dev_err(&client->dev, "write exp_reg err.\n");
1227 return ret;
1228 }
1229 }
1230 }
1231
1232 return 0;
1233 }
1234
mt9m114_g_bin_factor_x(struct v4l2_subdev * sd,s32 * val)1235 static int mt9m114_g_bin_factor_x(struct v4l2_subdev *sd, s32 *val)
1236 {
1237 struct mt9m114_device *dev = to_mt9m114_sensor(sd);
1238
1239 *val = mt9m114_res[dev->res].bin_factor_x;
1240
1241 return 0;
1242 }
1243
mt9m114_g_bin_factor_y(struct v4l2_subdev * sd,s32 * val)1244 static int mt9m114_g_bin_factor_y(struct v4l2_subdev *sd, s32 *val)
1245 {
1246 struct mt9m114_device *dev = to_mt9m114_sensor(sd);
1247
1248 *val = mt9m114_res[dev->res].bin_factor_y;
1249
1250 return 0;
1251 }
1252
mt9m114_s_ev(struct v4l2_subdev * sd,s32 val)1253 static int mt9m114_s_ev(struct v4l2_subdev *sd, s32 val)
1254 {
1255 struct i2c_client *c = v4l2_get_subdevdata(sd);
1256 s32 luma = 0x37;
1257 int err;
1258
1259 /*
1260 * EV value only support -2 to 2
1261 * 0: 0x37, 1:0x47, 2:0x57, -1:0x27, -2:0x17
1262 */
1263 if (val < -2 || val > 2)
1264 return -EINVAL;
1265 luma += 0x10 * val;
1266 dev_dbg(&c->dev, "%s val:%d luma:0x%x\n", __func__, val, luma);
1267 err = mt9m114_write_reg(c, MISENSOR_16BIT, 0x098E, 0xC87A);
1268 if (err) {
1269 dev_err(&c->dev, "%s logic addr access error\n", __func__);
1270 return err;
1271 }
1272 err = mt9m114_write_reg(c, MISENSOR_8BIT, 0xC87A, (u32)luma);
1273 if (err) {
1274 dev_err(&c->dev, "%s write target_average_luma failed\n",
1275 __func__);
1276 return err;
1277 }
1278 udelay(10);
1279
1280 return 0;
1281 }
1282
mt9m114_g_ev(struct v4l2_subdev * sd,s32 * val)1283 static int mt9m114_g_ev(struct v4l2_subdev *sd, s32 *val)
1284 {
1285 struct i2c_client *c = v4l2_get_subdevdata(sd);
1286 int err;
1287 u32 luma;
1288
1289 err = mt9m114_write_reg(c, MISENSOR_16BIT, 0x098E, 0xC87A);
1290 if (err) {
1291 dev_err(&c->dev, "%s logic addr access error\n", __func__);
1292 return err;
1293 }
1294 err = mt9m114_read_reg(c, MISENSOR_8BIT, 0xC87A, &luma);
1295 if (err) {
1296 dev_err(&c->dev, "%s read target_average_luma failed\n",
1297 __func__);
1298 return err;
1299 }
1300 luma -= 0x17;
1301 luma /= 0x10;
1302 *val = (s32)luma - 2;
1303 dev_dbg(&c->dev, "%s val:%d\n", __func__, *val);
1304
1305 return 0;
1306 }
1307
1308 /*
1309 * Fake interface
1310 * mt9m114 now can not support 3a_lock
1311 */
mt9m114_s_3a_lock(struct v4l2_subdev * sd,s32 val)1312 static int mt9m114_s_3a_lock(struct v4l2_subdev *sd, s32 val)
1313 {
1314 aaalock = val;
1315 return 0;
1316 }
1317
mt9m114_g_3a_lock(struct v4l2_subdev * sd,s32 * val)1318 static int mt9m114_g_3a_lock(struct v4l2_subdev *sd, s32 *val)
1319 {
1320 if (aaalock)
1321 return V4L2_LOCK_EXPOSURE | V4L2_LOCK_WHITE_BALANCE
1322 | V4L2_LOCK_FOCUS;
1323 return 0;
1324 }
1325
mt9m114_s_ctrl(struct v4l2_ctrl * ctrl)1326 static int mt9m114_s_ctrl(struct v4l2_ctrl *ctrl)
1327 {
1328 struct mt9m114_device *dev =
1329 container_of(ctrl->handler, struct mt9m114_device, ctrl_handler);
1330 struct i2c_client *client = v4l2_get_subdevdata(&dev->sd);
1331 int ret = 0;
1332
1333 switch (ctrl->id) {
1334 case V4L2_CID_VFLIP:
1335 dev_dbg(&client->dev, "%s: CID_VFLIP:%d.\n",
1336 __func__, ctrl->val);
1337 ret = mt9m114_t_vflip(&dev->sd, ctrl->val);
1338 break;
1339 case V4L2_CID_HFLIP:
1340 dev_dbg(&client->dev, "%s: CID_HFLIP:%d.\n",
1341 __func__, ctrl->val);
1342 ret = mt9m114_t_hflip(&dev->sd, ctrl->val);
1343 break;
1344 case V4L2_CID_EXPOSURE_METERING:
1345 ret = mt9m114_s_exposure_metering(&dev->sd, ctrl->val);
1346 break;
1347 case V4L2_CID_EXPOSURE:
1348 ret = mt9m114_s_ev(&dev->sd, ctrl->val);
1349 break;
1350 case V4L2_CID_3A_LOCK:
1351 ret = mt9m114_s_3a_lock(&dev->sd, ctrl->val);
1352 break;
1353 default:
1354 ret = -EINVAL;
1355 }
1356 return ret;
1357 }
1358
mt9m114_g_volatile_ctrl(struct v4l2_ctrl * ctrl)1359 static int mt9m114_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
1360 {
1361 struct mt9m114_device *dev =
1362 container_of(ctrl->handler, struct mt9m114_device, ctrl_handler);
1363 int ret = 0;
1364
1365 switch (ctrl->id) {
1366 case V4L2_CID_VFLIP:
1367 ret = mt9m114_g_vflip(&dev->sd, &ctrl->val);
1368 break;
1369 case V4L2_CID_HFLIP:
1370 ret = mt9m114_g_hflip(&dev->sd, &ctrl->val);
1371 break;
1372 case V4L2_CID_FOCAL_ABSOLUTE:
1373 ret = mt9m114_g_focal(&dev->sd, &ctrl->val);
1374 break;
1375 case V4L2_CID_FNUMBER_ABSOLUTE:
1376 ret = mt9m114_g_fnumber(&dev->sd, &ctrl->val);
1377 break;
1378 case V4L2_CID_FNUMBER_RANGE:
1379 ret = mt9m114_g_fnumber_range(&dev->sd, &ctrl->val);
1380 break;
1381 case V4L2_CID_EXPOSURE_ABSOLUTE:
1382 ret = mt9m114_g_exposure(&dev->sd, &ctrl->val);
1383 break;
1384 case V4L2_CID_EXPOSURE_ZONE_NUM:
1385 ret = mt9m114_g_exposure_zone_num(&dev->sd, &ctrl->val);
1386 break;
1387 case V4L2_CID_BIN_FACTOR_HORZ:
1388 ret = mt9m114_g_bin_factor_x(&dev->sd, &ctrl->val);
1389 break;
1390 case V4L2_CID_BIN_FACTOR_VERT:
1391 ret = mt9m114_g_bin_factor_y(&dev->sd, &ctrl->val);
1392 break;
1393 case V4L2_CID_EXPOSURE:
1394 ret = mt9m114_g_ev(&dev->sd, &ctrl->val);
1395 break;
1396 case V4L2_CID_3A_LOCK:
1397 ret = mt9m114_g_3a_lock(&dev->sd, &ctrl->val);
1398 break;
1399 default:
1400 ret = -EINVAL;
1401 }
1402
1403 return ret;
1404 }
1405
1406 static const struct v4l2_ctrl_ops ctrl_ops = {
1407 .s_ctrl = mt9m114_s_ctrl,
1408 .g_volatile_ctrl = mt9m114_g_volatile_ctrl
1409 };
1410
1411 static struct v4l2_ctrl_config mt9m114_controls[] = {
1412 {
1413 .ops = &ctrl_ops,
1414 .id = V4L2_CID_VFLIP,
1415 .name = "Image v-Flip",
1416 .type = V4L2_CTRL_TYPE_INTEGER,
1417 .min = 0,
1418 .max = 1,
1419 .step = 1,
1420 .def = 0,
1421 },
1422 {
1423 .ops = &ctrl_ops,
1424 .id = V4L2_CID_HFLIP,
1425 .name = "Image h-Flip",
1426 .type = V4L2_CTRL_TYPE_INTEGER,
1427 .min = 0,
1428 .max = 1,
1429 .step = 1,
1430 .def = 0,
1431 },
1432 {
1433 .ops = &ctrl_ops,
1434 .id = V4L2_CID_FOCAL_ABSOLUTE,
1435 .name = "focal length",
1436 .type = V4L2_CTRL_TYPE_INTEGER,
1437 .min = MT9M114_FOCAL_LENGTH_DEFAULT,
1438 .max = MT9M114_FOCAL_LENGTH_DEFAULT,
1439 .step = 1,
1440 .def = MT9M114_FOCAL_LENGTH_DEFAULT,
1441 .flags = 0,
1442 },
1443 {
1444 .ops = &ctrl_ops,
1445 .id = V4L2_CID_FNUMBER_ABSOLUTE,
1446 .name = "f-number",
1447 .type = V4L2_CTRL_TYPE_INTEGER,
1448 .min = MT9M114_F_NUMBER_DEFAULT,
1449 .max = MT9M114_F_NUMBER_DEFAULT,
1450 .step = 1,
1451 .def = MT9M114_F_NUMBER_DEFAULT,
1452 .flags = 0,
1453 },
1454 {
1455 .ops = &ctrl_ops,
1456 .id = V4L2_CID_FNUMBER_RANGE,
1457 .name = "f-number range",
1458 .type = V4L2_CTRL_TYPE_INTEGER,
1459 .min = MT9M114_F_NUMBER_RANGE,
1460 .max = MT9M114_F_NUMBER_RANGE,
1461 .step = 1,
1462 .def = MT9M114_F_NUMBER_RANGE,
1463 .flags = 0,
1464 },
1465 {
1466 .ops = &ctrl_ops,
1467 .id = V4L2_CID_EXPOSURE_ABSOLUTE,
1468 .name = "exposure",
1469 .type = V4L2_CTRL_TYPE_INTEGER,
1470 .min = 0,
1471 .max = 0xffff,
1472 .step = 1,
1473 .def = 0,
1474 .flags = 0,
1475 },
1476 {
1477 .ops = &ctrl_ops,
1478 .id = V4L2_CID_EXPOSURE_ZONE_NUM,
1479 .name = "one-time exposure zone number",
1480 .type = V4L2_CTRL_TYPE_INTEGER,
1481 .min = 0,
1482 .max = 0xffff,
1483 .step = 1,
1484 .def = 0,
1485 .flags = 0,
1486 },
1487 {
1488 .ops = &ctrl_ops,
1489 .id = V4L2_CID_EXPOSURE_METERING,
1490 .name = "metering",
1491 .type = V4L2_CTRL_TYPE_MENU,
1492 .min = 0,
1493 .max = 3,
1494 .step = 0,
1495 .def = 1,
1496 .flags = 0,
1497 },
1498 {
1499 .ops = &ctrl_ops,
1500 .id = V4L2_CID_BIN_FACTOR_HORZ,
1501 .name = "horizontal binning factor",
1502 .type = V4L2_CTRL_TYPE_INTEGER,
1503 .min = 0,
1504 .max = MT9M114_BIN_FACTOR_MAX,
1505 .step = 1,
1506 .def = 0,
1507 .flags = 0,
1508 },
1509 {
1510 .ops = &ctrl_ops,
1511 .id = V4L2_CID_BIN_FACTOR_VERT,
1512 .name = "vertical binning factor",
1513 .type = V4L2_CTRL_TYPE_INTEGER,
1514 .min = 0,
1515 .max = MT9M114_BIN_FACTOR_MAX,
1516 .step = 1,
1517 .def = 0,
1518 .flags = 0,
1519 },
1520 {
1521 .ops = &ctrl_ops,
1522 .id = V4L2_CID_EXPOSURE,
1523 .name = "exposure biasx",
1524 .type = V4L2_CTRL_TYPE_INTEGER,
1525 .min = -2,
1526 .max = 2,
1527 .step = 1,
1528 .def = 0,
1529 .flags = 0,
1530 },
1531 {
1532 .ops = &ctrl_ops,
1533 .id = V4L2_CID_3A_LOCK,
1534 .name = "3a lock",
1535 .type = V4L2_CTRL_TYPE_BITMASK,
1536 .min = 0,
1537 .max = V4L2_LOCK_EXPOSURE | V4L2_LOCK_WHITE_BALANCE | V4L2_LOCK_FOCUS,
1538 .step = 1,
1539 .def = 0,
1540 .flags = 0,
1541 },
1542 };
1543
mt9m114_detect(struct mt9m114_device * dev,struct i2c_client * client)1544 static int mt9m114_detect(struct mt9m114_device *dev, struct i2c_client *client)
1545 {
1546 struct i2c_adapter *adapter = client->adapter;
1547 u32 model;
1548 int ret;
1549
1550 if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) {
1551 dev_err(&client->dev, "%s: i2c error", __func__);
1552 return -ENODEV;
1553 }
1554 ret = mt9m114_read_reg(client, MISENSOR_16BIT, MT9M114_PID, &model);
1555 if (ret)
1556 return ret;
1557 dev->real_model_id = model;
1558
1559 if (model != MT9M114_MOD_ID) {
1560 dev_err(&client->dev, "%s: failed: client->addr = %x\n",
1561 __func__, client->addr);
1562 return -ENODEV;
1563 }
1564
1565 return 0;
1566 }
1567
1568 static int
mt9m114_s_config(struct v4l2_subdev * sd,int irq,void * platform_data)1569 mt9m114_s_config(struct v4l2_subdev *sd, int irq, void *platform_data)
1570 {
1571 struct mt9m114_device *dev = to_mt9m114_sensor(sd);
1572 struct i2c_client *client = v4l2_get_subdevdata(sd);
1573 int ret;
1574
1575 if (!platform_data)
1576 return -ENODEV;
1577
1578 dev->platform_data =
1579 (struct camera_sensor_platform_data *)platform_data;
1580
1581 ret = power_up(sd);
1582 if (ret) {
1583 v4l2_err(client, "mt9m114 power-up err");
1584 return ret;
1585 }
1586
1587 /* config & detect sensor */
1588 ret = mt9m114_detect(dev, client);
1589 if (ret) {
1590 v4l2_err(client, "mt9m114_detect err s_config.\n");
1591 goto fail_detect;
1592 }
1593
1594 ret = dev->platform_data->csi_cfg(sd, 1);
1595 if (ret)
1596 goto fail_csi_cfg;
1597
1598 ret = mt9m114_set_suspend(sd);
1599 if (ret) {
1600 v4l2_err(client, "mt9m114 suspend err");
1601 return ret;
1602 }
1603
1604 ret = power_down(sd);
1605 if (ret) {
1606 v4l2_err(client, "mt9m114 power down err");
1607 return ret;
1608 }
1609
1610 return ret;
1611
1612 fail_csi_cfg:
1613 dev->platform_data->csi_cfg(sd, 0);
1614 fail_detect:
1615 power_down(sd);
1616 dev_err(&client->dev, "sensor power-gating failed\n");
1617 return ret;
1618 }
1619
1620 /* Horizontal flip the image. */
mt9m114_t_hflip(struct v4l2_subdev * sd,int value)1621 static int mt9m114_t_hflip(struct v4l2_subdev *sd, int value)
1622 {
1623 struct i2c_client *c = v4l2_get_subdevdata(sd);
1624 struct mt9m114_device *dev = to_mt9m114_sensor(sd);
1625 int err;
1626 /* set for direct mode */
1627 err = mt9m114_write_reg(c, MISENSOR_16BIT, 0x098E, 0xC850);
1628 if (value) {
1629 /* enable H flip ctx A */
1630 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC850, 0x01, 0x01);
1631 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC851, 0x01, 0x01);
1632 /* ctx B */
1633 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC888, 0x01, 0x01);
1634 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC889, 0x01, 0x01);
1635
1636 err += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE,
1637 MISENSOR_HFLIP_MASK, MISENSOR_FLIP_EN);
1638
1639 dev->bpat = MT9M114_BPAT_GRGRBGBG;
1640 } else {
1641 /* disable H flip ctx A */
1642 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC850, 0x01, 0x00);
1643 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC851, 0x01, 0x00);
1644 /* ctx B */
1645 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC888, 0x01, 0x00);
1646 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC889, 0x01, 0x00);
1647
1648 err += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE,
1649 MISENSOR_HFLIP_MASK, MISENSOR_FLIP_DIS);
1650
1651 dev->bpat = MT9M114_BPAT_BGBGGRGR;
1652 }
1653
1654 err += mt9m114_write_reg(c, MISENSOR_8BIT, 0x8404, 0x06);
1655 udelay(10);
1656
1657 return !!err;
1658 }
1659
1660 /* Vertically flip the image */
mt9m114_t_vflip(struct v4l2_subdev * sd,int value)1661 static int mt9m114_t_vflip(struct v4l2_subdev *sd, int value)
1662 {
1663 struct i2c_client *c = v4l2_get_subdevdata(sd);
1664 int err;
1665 /* set for direct mode */
1666 err = mt9m114_write_reg(c, MISENSOR_16BIT, 0x098E, 0xC850);
1667 if (value >= 1) {
1668 /* enable H flip - ctx A */
1669 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC850, 0x02, 0x01);
1670 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC851, 0x02, 0x01);
1671 /* ctx B */
1672 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC888, 0x02, 0x01);
1673 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC889, 0x02, 0x01);
1674
1675 err += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE,
1676 MISENSOR_VFLIP_MASK, MISENSOR_FLIP_EN);
1677 } else {
1678 /* disable H flip - ctx A */
1679 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC850, 0x02, 0x00);
1680 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC851, 0x02, 0x00);
1681 /* ctx B */
1682 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC888, 0x02, 0x00);
1683 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC889, 0x02, 0x00);
1684
1685 err += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE,
1686 MISENSOR_VFLIP_MASK, MISENSOR_FLIP_DIS);
1687 }
1688
1689 err += mt9m114_write_reg(c, MISENSOR_8BIT, 0x8404, 0x06);
1690 udelay(10);
1691
1692 return !!err;
1693 }
1694
mt9m114_g_frame_interval(struct v4l2_subdev * sd,struct v4l2_subdev_frame_interval * interval)1695 static int mt9m114_g_frame_interval(struct v4l2_subdev *sd,
1696 struct v4l2_subdev_frame_interval *interval)
1697 {
1698 struct mt9m114_device *dev = to_mt9m114_sensor(sd);
1699
1700 interval->interval.numerator = 1;
1701 interval->interval.denominator = mt9m114_res[dev->res].fps;
1702
1703 return 0;
1704 }
1705
mt9m114_s_stream(struct v4l2_subdev * sd,int enable)1706 static int mt9m114_s_stream(struct v4l2_subdev *sd, int enable)
1707 {
1708 int ret;
1709 struct i2c_client *c = v4l2_get_subdevdata(sd);
1710 struct mt9m114_device *dev = to_mt9m114_sensor(sd);
1711 struct atomisp_exposure exposure;
1712
1713 if (enable) {
1714 ret = mt9m114_write_reg_array(c, mt9m114_chgstat_reg,
1715 POST_POLLING);
1716 if (ret < 0)
1717 return ret;
1718
1719 if (dev->first_exp > MT9M114_MAX_FIRST_EXP) {
1720 exposure.integration_time[0] = dev->first_exp;
1721 exposure.gain[0] = dev->first_gain;
1722 exposure.gain[1] = dev->first_diggain;
1723 mt9m114_s_exposure(sd, &exposure);
1724 }
1725 dev->streamon = 1;
1726
1727 } else {
1728 dev->streamon = 0;
1729 ret = mt9m114_set_suspend(sd);
1730 }
1731
1732 return ret;
1733 }
1734
mt9m114_enum_mbus_code(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_mbus_code_enum * code)1735 static int mt9m114_enum_mbus_code(struct v4l2_subdev *sd,
1736 struct v4l2_subdev_state *sd_state,
1737 struct v4l2_subdev_mbus_code_enum *code)
1738 {
1739 if (code->index)
1740 return -EINVAL;
1741 code->code = MEDIA_BUS_FMT_SGRBG10_1X10;
1742
1743 return 0;
1744 }
1745
mt9m114_enum_frame_size(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_frame_size_enum * fse)1746 static int mt9m114_enum_frame_size(struct v4l2_subdev *sd,
1747 struct v4l2_subdev_state *sd_state,
1748 struct v4l2_subdev_frame_size_enum *fse)
1749 {
1750 unsigned int index = fse->index;
1751
1752 if (index >= N_RES)
1753 return -EINVAL;
1754
1755 fse->min_width = mt9m114_res[index].width;
1756 fse->min_height = mt9m114_res[index].height;
1757 fse->max_width = mt9m114_res[index].width;
1758 fse->max_height = mt9m114_res[index].height;
1759
1760 return 0;
1761 }
1762
mt9m114_g_skip_frames(struct v4l2_subdev * sd,u32 * frames)1763 static int mt9m114_g_skip_frames(struct v4l2_subdev *sd, u32 *frames)
1764 {
1765 int index;
1766 struct mt9m114_device *snr = to_mt9m114_sensor(sd);
1767
1768 if (!frames)
1769 return -EINVAL;
1770
1771 for (index = 0; index < N_RES; index++) {
1772 if (mt9m114_res[index].res == snr->res)
1773 break;
1774 }
1775
1776 if (index >= N_RES)
1777 return -EINVAL;
1778
1779 *frames = mt9m114_res[index].skip_frames;
1780
1781 return 0;
1782 }
1783
1784 static const struct v4l2_subdev_video_ops mt9m114_video_ops = {
1785 .s_stream = mt9m114_s_stream,
1786 .g_frame_interval = mt9m114_g_frame_interval,
1787 };
1788
1789 static const struct v4l2_subdev_sensor_ops mt9m114_sensor_ops = {
1790 .g_skip_frames = mt9m114_g_skip_frames,
1791 };
1792
1793 static const struct v4l2_subdev_core_ops mt9m114_core_ops = {
1794 .s_power = mt9m114_s_power,
1795 .ioctl = mt9m114_ioctl,
1796 };
1797
1798 /* REVISIT: Do we need pad operations? */
1799 static const struct v4l2_subdev_pad_ops mt9m114_pad_ops = {
1800 .enum_mbus_code = mt9m114_enum_mbus_code,
1801 .enum_frame_size = mt9m114_enum_frame_size,
1802 .get_fmt = mt9m114_get_fmt,
1803 .set_fmt = mt9m114_set_fmt,
1804 .set_selection = mt9m114_s_exposure_selection,
1805 };
1806
1807 static const struct v4l2_subdev_ops mt9m114_ops = {
1808 .core = &mt9m114_core_ops,
1809 .video = &mt9m114_video_ops,
1810 .pad = &mt9m114_pad_ops,
1811 .sensor = &mt9m114_sensor_ops,
1812 };
1813
mt9m114_remove(struct i2c_client * client)1814 static int mt9m114_remove(struct i2c_client *client)
1815 {
1816 struct mt9m114_device *dev;
1817 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1818
1819 dev = container_of(sd, struct mt9m114_device, sd);
1820 dev->platform_data->csi_cfg(sd, 0);
1821 v4l2_device_unregister_subdev(sd);
1822 media_entity_cleanup(&dev->sd.entity);
1823 v4l2_ctrl_handler_free(&dev->ctrl_handler);
1824 kfree(dev);
1825 return 0;
1826 }
1827
mt9m114_probe(struct i2c_client * client)1828 static int mt9m114_probe(struct i2c_client *client)
1829 {
1830 struct mt9m114_device *dev;
1831 int ret = 0;
1832 unsigned int i;
1833 void *pdata;
1834
1835 /* Setup sensor configuration structure */
1836 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
1837 if (!dev)
1838 return -ENOMEM;
1839
1840 v4l2_i2c_subdev_init(&dev->sd, client, &mt9m114_ops);
1841 pdata = gmin_camera_platform_data(&dev->sd,
1842 ATOMISP_INPUT_FORMAT_RAW_10,
1843 atomisp_bayer_order_grbg);
1844 if (pdata)
1845 ret = mt9m114_s_config(&dev->sd, client->irq, pdata);
1846 if (!pdata || ret) {
1847 v4l2_device_unregister_subdev(&dev->sd);
1848 kfree(dev);
1849 return ret;
1850 }
1851
1852 ret = atomisp_register_i2c_module(&dev->sd, pdata, RAW_CAMERA);
1853 if (ret) {
1854 v4l2_device_unregister_subdev(&dev->sd);
1855 kfree(dev);
1856 /* Coverity CID 298095 - return on error */
1857 return ret;
1858 }
1859
1860 /* TODO add format code here */
1861 dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1862 dev->pad.flags = MEDIA_PAD_FL_SOURCE;
1863 dev->format.code = MEDIA_BUS_FMT_SGRBG10_1X10;
1864 dev->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
1865
1866 ret =
1867 v4l2_ctrl_handler_init(&dev->ctrl_handler,
1868 ARRAY_SIZE(mt9m114_controls));
1869 if (ret) {
1870 mt9m114_remove(client);
1871 return ret;
1872 }
1873
1874 for (i = 0; i < ARRAY_SIZE(mt9m114_controls); i++)
1875 v4l2_ctrl_new_custom(&dev->ctrl_handler, &mt9m114_controls[i],
1876 NULL);
1877
1878 if (dev->ctrl_handler.error) {
1879 mt9m114_remove(client);
1880 return dev->ctrl_handler.error;
1881 }
1882
1883 /* Use same lock for controls as for everything else. */
1884 dev->ctrl_handler.lock = &dev->input_lock;
1885 dev->sd.ctrl_handler = &dev->ctrl_handler;
1886
1887 /* REVISIT: Do we need media controller? */
1888 ret = media_entity_pads_init(&dev->sd.entity, 1, &dev->pad);
1889 if (ret) {
1890 mt9m114_remove(client);
1891 return ret;
1892 }
1893 return 0;
1894 }
1895
1896 static const struct acpi_device_id mt9m114_acpi_match[] = {
1897 { "INT33F0" },
1898 { "CRMT1040" },
1899 {},
1900 };
1901 MODULE_DEVICE_TABLE(acpi, mt9m114_acpi_match);
1902
1903 static struct i2c_driver mt9m114_driver = {
1904 .driver = {
1905 .name = "mt9m114",
1906 .acpi_match_table = mt9m114_acpi_match,
1907 },
1908 .probe_new = mt9m114_probe,
1909 .remove = mt9m114_remove,
1910 };
1911 module_i2c_driver(mt9m114_driver);
1912
1913 MODULE_AUTHOR("Shuguang Gong <Shuguang.gong@intel.com>");
1914 MODULE_LICENSE("GPL");
1915
