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
mt9m114_res2size(struct v4l2_subdev * sd,int * h_size,int * v_size)582 static int mt9m114_res2size(struct v4l2_subdev *sd, int *h_size, int *v_size)
583 {
584 struct mt9m114_device *dev = to_mt9m114_sensor(sd);
585 unsigned short hsize;
586 unsigned short vsize;
587
588 switch (dev->res) {
589 case MT9M114_RES_736P:
590 hsize = MT9M114_RES_736P_SIZE_H;
591 vsize = MT9M114_RES_736P_SIZE_V;
592 break;
593 case MT9M114_RES_864P:
594 hsize = MT9M114_RES_864P_SIZE_H;
595 vsize = MT9M114_RES_864P_SIZE_V;
596 break;
597 case MT9M114_RES_960P:
598 hsize = MT9M114_RES_960P_SIZE_H;
599 vsize = MT9M114_RES_960P_SIZE_V;
600 break;
601 default:
602 v4l2_err(sd, "%s: Resolution 0x%08x unknown\n", __func__,
603 dev->res);
604 return -EINVAL;
605 }
606
607 if (h_size)
608 *h_size = hsize;
609 if (v_size)
610 *v_size = vsize;
611
612 return 0;
613 }
614
mt9m114_get_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * format)615 static int mt9m114_get_fmt(struct v4l2_subdev *sd,
616 struct v4l2_subdev_state *sd_state,
617 struct v4l2_subdev_format *format)
618 {
619 struct v4l2_mbus_framefmt *fmt = &format->format;
620 int width, height;
621 int ret;
622
623 if (format->pad)
624 return -EINVAL;
625 fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
626
627 ret = mt9m114_res2size(sd, &width, &height);
628 if (ret)
629 return ret;
630 fmt->width = width;
631 fmt->height = height;
632
633 return 0;
634 }
635
mt9m114_set_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * format)636 static int mt9m114_set_fmt(struct v4l2_subdev *sd,
637 struct v4l2_subdev_state *sd_state,
638 struct v4l2_subdev_format *format)
639 {
640 struct v4l2_mbus_framefmt *fmt = &format->format;
641 struct i2c_client *c = v4l2_get_subdevdata(sd);
642 struct mt9m114_device *dev = to_mt9m114_sensor(sd);
643 struct mt9m114_res_struct *res;
644 u32 width = fmt->width;
645 u32 height = fmt->height;
646 struct camera_mipi_info *mt9m114_info = NULL;
647
648 int ret;
649
650 if (format->pad)
651 return -EINVAL;
652 dev->streamon = 0;
653 dev->first_exp = MT9M114_DEFAULT_FIRST_EXP;
654
655 mt9m114_info = v4l2_get_subdev_hostdata(sd);
656 if (!mt9m114_info)
657 return -EINVAL;
658
659 res = v4l2_find_nearest_size(mt9m114_res,
660 ARRAY_SIZE(mt9m114_res), width,
661 height, fmt->width, fmt->height);
662 if (!res)
663 res = &mt9m114_res[N_RES - 1];
664
665 fmt->width = res->width;
666 fmt->height = res->height;
667
668 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
669 sd_state->pads->try_fmt = *fmt;
670 return 0;
671 }
672
673 switch (res->res) {
674 case MT9M114_RES_736P:
675 ret = mt9m114_write_reg_array(c, mt9m114_736P_init, NO_POLLING);
676 ret += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE,
677 MISENSOR_R_MODE_MASK, MISENSOR_NORMAL_SET);
678 break;
679 case MT9M114_RES_864P:
680 ret = mt9m114_write_reg_array(c, mt9m114_864P_init, NO_POLLING);
681 ret += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE,
682 MISENSOR_R_MODE_MASK, MISENSOR_NORMAL_SET);
683 break;
684 case MT9M114_RES_960P:
685 ret = mt9m114_write_reg_array(c, mt9m114_976P_init, NO_POLLING);
686 /* set sensor read_mode to Normal */
687 ret += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE,
688 MISENSOR_R_MODE_MASK, MISENSOR_NORMAL_SET);
689 break;
690 default:
691 v4l2_err(sd, "set resolution: %d failed!\n", res->res);
692 return -EINVAL;
693 }
694
695 if (ret)
696 return -EINVAL;
697
698 ret = mt9m114_write_reg_array(c, mt9m114_chgstat_reg, POST_POLLING);
699 if (ret < 0)
700 return ret;
701
702 if (mt9m114_set_suspend(sd))
703 return -EINVAL;
704
705 if (dev->res != res->res) {
706 int index;
707
708 /* Switch to different size */
709 if (width <= 640) {
710 dev->nctx = 0x00; /* Set for context A */
711 } else {
712 /*
713 * Context B is used for resolutions larger than 640x480
714 * Using YUV for Context B.
715 */
716 dev->nctx = 0x01; /* set for context B */
717 }
718
719 /*
720 * Marked current sensor res as being "used"
721 *
722 * REVISIT: We don't need to use an "used" field on each mode
723 * list entry to know which mode is selected. If this
724 * information is really necessary, how about to use a single
725 * variable on sensor dev struct?
726 */
727 for (index = 0; index < N_RES; index++) {
728 if ((width == mt9m114_res[index].width) &&
729 (height == mt9m114_res[index].height)) {
730 mt9m114_res[index].used = true;
731 continue;
732 }
733 mt9m114_res[index].used = false;
734 }
735 }
736 /*
737 * mt9m114 - we don't poll for context switch
738 * because it does not happen with streaming disabled.
739 */
740 dev->res = res->res;
741
742 fmt->width = width;
743 fmt->height = height;
744 fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
745 return 0;
746 }
747
748 /* Horizontal flip the image. */
mt9m114_g_hflip(struct v4l2_subdev * sd,s32 * val)749 static int mt9m114_g_hflip(struct v4l2_subdev *sd, s32 *val)
750 {
751 struct i2c_client *c = v4l2_get_subdevdata(sd);
752 int ret;
753 u32 data;
754
755 ret = mt9m114_read_reg(c, MISENSOR_16BIT,
756 (u32)MISENSOR_READ_MODE, &data);
757 if (ret)
758 return ret;
759 *val = !!(data & MISENSOR_HFLIP_MASK);
760
761 return 0;
762 }
763
mt9m114_g_vflip(struct v4l2_subdev * sd,s32 * val)764 static int mt9m114_g_vflip(struct v4l2_subdev *sd, s32 *val)
765 {
766 struct i2c_client *c = v4l2_get_subdevdata(sd);
767 int ret;
768 u32 data;
769
770 ret = mt9m114_read_reg(c, MISENSOR_16BIT,
771 (u32)MISENSOR_READ_MODE, &data);
772 if (ret)
773 return ret;
774 *val = !!(data & MISENSOR_VFLIP_MASK);
775
776 return 0;
777 }
778
mt9m114_s_exposure(struct v4l2_subdev * sd,struct atomisp_exposure * exposure)779 static long mt9m114_s_exposure(struct v4l2_subdev *sd,
780 struct atomisp_exposure *exposure)
781 {
782 struct i2c_client *client = v4l2_get_subdevdata(sd);
783 struct mt9m114_device *dev = to_mt9m114_sensor(sd);
784 int ret = 0;
785 unsigned int coarse_integration = 0;
786 unsigned int f_lines = 0;
787 unsigned int frame_len_lines = 0; /* ExposureTime.FrameLengthLines; */
788 unsigned int analog_gain, digital_gain;
789 u32 analog_gain_to_write = 0;
790
791 dev_dbg(&client->dev, "%s(0x%X 0x%X 0x%X)\n", __func__,
792 exposure->integration_time[0], exposure->gain[0],
793 exposure->gain[1]);
794
795 coarse_integration = exposure->integration_time[0];
796 /*
797 * fine_integration = ExposureTime.FineIntegrationTime;
798 * frame_len_lines = ExposureTime.FrameLengthLines;
799 */
800 f_lines = mt9m114_res[dev->res].lines_per_frame;
801 analog_gain = exposure->gain[0];
802 digital_gain = exposure->gain[1];
803 if (!dev->streamon) {
804 /*Save the first exposure values while stream is off*/
805 dev->first_exp = coarse_integration;
806 dev->first_gain = analog_gain;
807 dev->first_diggain = digital_gain;
808 }
809 /* digital_gain = 0x400 * (((u16) digital_gain) >> 8) + */
810 /* ((unsigned int)(0x400 * (((u16) digital_gain) & 0xFF)) >>8); */
811
812 /* set frame length */
813 if (f_lines < coarse_integration + 6)
814 f_lines = coarse_integration + 6;
815 if (f_lines < frame_len_lines)
816 f_lines = frame_len_lines;
817 ret = mt9m114_write_reg(client, MISENSOR_16BIT, 0x300A, f_lines);
818 if (ret) {
819 v4l2_err(client, "%s: fail to set f_lines\n", __func__);
820 return -EINVAL;
821 }
822
823 /* set coarse integration */
824 /*
825 * 3A provide real exposure time.
826 * should not translate to any value here.
827 */
828 ret = mt9m114_write_reg(client, MISENSOR_16BIT,
829 REG_EXPO_COARSE, (u16)(coarse_integration));
830 if (ret) {
831 v4l2_err(client, "%s: fail to set exposure time\n", __func__);
832 return -EINVAL;
833 }
834
835 /*
836 * set analog/digital gain
837 switch(analog_gain)
838 {
839 case 0:
840 analog_gain_to_write = 0x0;
841 break;
842 case 1:
843 analog_gain_to_write = 0x20;
844 break;
845 case 2:
846 analog_gain_to_write = 0x60;
847 break;
848 case 4:
849 analog_gain_to_write = 0xA0;
850 break;
851 case 8:
852 analog_gain_to_write = 0xE0;
853 break;
854 default:
855 analog_gain_to_write = 0x20;
856 break;
857 }
858 */
859 if (digital_gain >= 16 || digital_gain <= 1)
860 digital_gain = 1;
861 /*
862 * analog_gain_to_write = (u16)((digital_gain << 12)
863 * | analog_gain_to_write);
864 */
865 analog_gain_to_write = (u16)((digital_gain << 12) | (u16)analog_gain);
866 ret = mt9m114_write_reg(client, MISENSOR_16BIT,
867 REG_GAIN, analog_gain_to_write);
868 if (ret) {
869 v4l2_err(client, "%s: fail to set analog_gain_to_write\n",
870 __func__);
871 return -EINVAL;
872 }
873
874 return ret;
875 }
876
mt9m114_ioctl(struct v4l2_subdev * sd,unsigned int cmd,void * arg)877 static long mt9m114_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
878 {
879 switch (cmd) {
880 case ATOMISP_IOC_S_EXPOSURE:
881 return mt9m114_s_exposure(sd, arg);
882 default:
883 return -EINVAL;
884 }
885
886 return 0;
887 }
888
889 /*
890 * This returns the exposure time being used. This should only be used
891 * for filling in EXIF data, not for actual image processing.
892 */
mt9m114_g_exposure(struct v4l2_subdev * sd,s32 * value)893 static int mt9m114_g_exposure(struct v4l2_subdev *sd, s32 *value)
894 {
895 struct i2c_client *client = v4l2_get_subdevdata(sd);
896 u32 coarse;
897 int ret;
898
899 /* the fine integration time is currently not calculated */
900 ret = mt9m114_read_reg(client, MISENSOR_16BIT,
901 REG_EXPO_COARSE, &coarse);
902 if (ret)
903 return ret;
904
905 *value = coarse;
906 return 0;
907 }
908
909 /*
910 * This function will return the sensor supported max exposure zone number.
911 * the sensor which supports max exposure zone number is 1.
912 */
mt9m114_g_exposure_zone_num(struct v4l2_subdev * sd,s32 * val)913 static int mt9m114_g_exposure_zone_num(struct v4l2_subdev *sd, s32 *val)
914 {
915 *val = 1;
916
917 return 0;
918 }
919
920 /*
921 * set exposure metering, average/center_weighted/spot/matrix.
922 */
mt9m114_s_exposure_metering(struct v4l2_subdev * sd,s32 val)923 static int mt9m114_s_exposure_metering(struct v4l2_subdev *sd, s32 val)
924 {
925 struct i2c_client *client = v4l2_get_subdevdata(sd);
926 int ret;
927
928 switch (val) {
929 case V4L2_EXPOSURE_METERING_SPOT:
930 ret = mt9m114_write_reg_array(client, mt9m114_exp_average,
931 NO_POLLING);
932 if (ret) {
933 dev_err(&client->dev, "write exp_average reg err.\n");
934 return ret;
935 }
936 break;
937 case V4L2_EXPOSURE_METERING_CENTER_WEIGHTED:
938 default:
939 ret = mt9m114_write_reg_array(client, mt9m114_exp_center,
940 NO_POLLING);
941 if (ret) {
942 dev_err(&client->dev, "write exp_default reg err");
943 return ret;
944 }
945 }
946
947 return 0;
948 }
949
950 /*
951 * This function is for touch exposure feature.
952 */
mt9m114_s_exposure_selection(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_selection * sel)953 static int mt9m114_s_exposure_selection(struct v4l2_subdev *sd,
954 struct v4l2_subdev_state *sd_state,
955 struct v4l2_subdev_selection *sel)
956 {
957 struct i2c_client *client = v4l2_get_subdevdata(sd);
958 struct misensor_reg exp_reg;
959 int width, height;
960 int grid_width, grid_height;
961 int grid_left, grid_top, grid_right, grid_bottom;
962 int win_left, win_top, win_right, win_bottom;
963 int i, j;
964 int ret;
965
966 if (sel->which != V4L2_SUBDEV_FORMAT_TRY &&
967 sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)
968 return -EINVAL;
969
970 grid_left = sel->r.left;
971 grid_top = sel->r.top;
972 grid_right = sel->r.left + sel->r.width - 1;
973 grid_bottom = sel->r.top + sel->r.height - 1;
974
975 ret = mt9m114_res2size(sd, &width, &height);
976 if (ret)
977 return ret;
978
979 grid_width = width / 5;
980 grid_height = height / 5;
981
982 if (grid_width && grid_height) {
983 win_left = grid_left / grid_width;
984 win_top = grid_top / grid_height;
985 win_right = grid_right / grid_width;
986 win_bottom = grid_bottom / grid_height;
987 } else {
988 dev_err(&client->dev, "Incorrect exp grid.\n");
989 return -EINVAL;
990 }
991
992 win_left = clamp_t(int, win_left, 0, 4);
993 win_top = clamp_t(int, win_top, 0, 4);
994 win_right = clamp_t(int, win_right, 0, 4);
995 win_bottom = clamp_t(int, win_bottom, 0, 4);
996
997 ret = mt9m114_write_reg_array(client, mt9m114_exp_average, NO_POLLING);
998 if (ret) {
999 dev_err(&client->dev, "write exp_average reg err.\n");
1000 return ret;
1001 }
1002
1003 for (i = win_top; i <= win_bottom; i++) {
1004 for (j = win_left; j <= win_right; j++) {
1005 exp_reg = mt9m114_exp_win[i][j];
1006
1007 ret = mt9m114_write_reg(client, exp_reg.length,
1008 exp_reg.reg, exp_reg.val);
1009 if (ret) {
1010 dev_err(&client->dev, "write exp_reg err.\n");
1011 return ret;
1012 }
1013 }
1014 }
1015
1016 return 0;
1017 }
1018
mt9m114_s_ev(struct v4l2_subdev * sd,s32 val)1019 static int mt9m114_s_ev(struct v4l2_subdev *sd, s32 val)
1020 {
1021 struct i2c_client *c = v4l2_get_subdevdata(sd);
1022 s32 luma = 0x37;
1023 int err;
1024
1025 /*
1026 * EV value only support -2 to 2
1027 * 0: 0x37, 1:0x47, 2:0x57, -1:0x27, -2:0x17
1028 */
1029 if (val < -2 || val > 2)
1030 return -EINVAL;
1031 luma += 0x10 * val;
1032 dev_dbg(&c->dev, "%s val:%d luma:0x%x\n", __func__, val, luma);
1033 err = mt9m114_write_reg(c, MISENSOR_16BIT, 0x098E, 0xC87A);
1034 if (err) {
1035 dev_err(&c->dev, "%s logic addr access error\n", __func__);
1036 return err;
1037 }
1038 err = mt9m114_write_reg(c, MISENSOR_8BIT, 0xC87A, (u32)luma);
1039 if (err) {
1040 dev_err(&c->dev, "%s write target_average_luma failed\n",
1041 __func__);
1042 return err;
1043 }
1044 udelay(10);
1045
1046 return 0;
1047 }
1048
mt9m114_g_ev(struct v4l2_subdev * sd,s32 * val)1049 static int mt9m114_g_ev(struct v4l2_subdev *sd, s32 *val)
1050 {
1051 struct i2c_client *c = v4l2_get_subdevdata(sd);
1052 int err;
1053 u32 luma;
1054
1055 err = mt9m114_write_reg(c, MISENSOR_16BIT, 0x098E, 0xC87A);
1056 if (err) {
1057 dev_err(&c->dev, "%s logic addr access error\n", __func__);
1058 return err;
1059 }
1060 err = mt9m114_read_reg(c, MISENSOR_8BIT, 0xC87A, &luma);
1061 if (err) {
1062 dev_err(&c->dev, "%s read target_average_luma failed\n",
1063 __func__);
1064 return err;
1065 }
1066 luma -= 0x17;
1067 luma /= 0x10;
1068 *val = (s32)luma - 2;
1069 dev_dbg(&c->dev, "%s val:%d\n", __func__, *val);
1070
1071 return 0;
1072 }
1073
1074 /*
1075 * Fake interface
1076 * mt9m114 now can not support 3a_lock
1077 */
mt9m114_s_3a_lock(struct v4l2_subdev * sd,s32 val)1078 static int mt9m114_s_3a_lock(struct v4l2_subdev *sd, s32 val)
1079 {
1080 aaalock = val;
1081 return 0;
1082 }
1083
mt9m114_g_3a_lock(struct v4l2_subdev * sd,s32 * val)1084 static int mt9m114_g_3a_lock(struct v4l2_subdev *sd, s32 *val)
1085 {
1086 if (aaalock)
1087 return V4L2_LOCK_EXPOSURE | V4L2_LOCK_WHITE_BALANCE
1088 | V4L2_LOCK_FOCUS;
1089 return 0;
1090 }
1091
mt9m114_s_ctrl(struct v4l2_ctrl * ctrl)1092 static int mt9m114_s_ctrl(struct v4l2_ctrl *ctrl)
1093 {
1094 struct mt9m114_device *dev =
1095 container_of(ctrl->handler, struct mt9m114_device, ctrl_handler);
1096 struct i2c_client *client = v4l2_get_subdevdata(&dev->sd);
1097 int ret = 0;
1098
1099 switch (ctrl->id) {
1100 case V4L2_CID_VFLIP:
1101 dev_dbg(&client->dev, "%s: CID_VFLIP:%d.\n",
1102 __func__, ctrl->val);
1103 ret = mt9m114_t_vflip(&dev->sd, ctrl->val);
1104 break;
1105 case V4L2_CID_HFLIP:
1106 dev_dbg(&client->dev, "%s: CID_HFLIP:%d.\n",
1107 __func__, ctrl->val);
1108 ret = mt9m114_t_hflip(&dev->sd, ctrl->val);
1109 break;
1110 case V4L2_CID_EXPOSURE_METERING:
1111 ret = mt9m114_s_exposure_metering(&dev->sd, ctrl->val);
1112 break;
1113 case V4L2_CID_EXPOSURE:
1114 ret = mt9m114_s_ev(&dev->sd, ctrl->val);
1115 break;
1116 case V4L2_CID_3A_LOCK:
1117 ret = mt9m114_s_3a_lock(&dev->sd, ctrl->val);
1118 break;
1119 default:
1120 ret = -EINVAL;
1121 }
1122 return ret;
1123 }
1124
mt9m114_g_volatile_ctrl(struct v4l2_ctrl * ctrl)1125 static int mt9m114_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
1126 {
1127 struct mt9m114_device *dev =
1128 container_of(ctrl->handler, struct mt9m114_device, ctrl_handler);
1129 int ret = 0;
1130
1131 switch (ctrl->id) {
1132 case V4L2_CID_VFLIP:
1133 ret = mt9m114_g_vflip(&dev->sd, &ctrl->val);
1134 break;
1135 case V4L2_CID_HFLIP:
1136 ret = mt9m114_g_hflip(&dev->sd, &ctrl->val);
1137 break;
1138 case V4L2_CID_EXPOSURE_ABSOLUTE:
1139 ret = mt9m114_g_exposure(&dev->sd, &ctrl->val);
1140 break;
1141 case V4L2_CID_EXPOSURE_ZONE_NUM:
1142 ret = mt9m114_g_exposure_zone_num(&dev->sd, &ctrl->val);
1143 break;
1144 case V4L2_CID_EXPOSURE:
1145 ret = mt9m114_g_ev(&dev->sd, &ctrl->val);
1146 break;
1147 case V4L2_CID_3A_LOCK:
1148 ret = mt9m114_g_3a_lock(&dev->sd, &ctrl->val);
1149 break;
1150 default:
1151 ret = -EINVAL;
1152 }
1153
1154 return ret;
1155 }
1156
1157 static const struct v4l2_ctrl_ops ctrl_ops = {
1158 .s_ctrl = mt9m114_s_ctrl,
1159 .g_volatile_ctrl = mt9m114_g_volatile_ctrl
1160 };
1161
1162 static struct v4l2_ctrl_config mt9m114_controls[] = {
1163 {
1164 .ops = &ctrl_ops,
1165 .id = V4L2_CID_VFLIP,
1166 .name = "Image v-Flip",
1167 .type = V4L2_CTRL_TYPE_INTEGER,
1168 .min = 0,
1169 .max = 1,
1170 .step = 1,
1171 .def = 0,
1172 },
1173 {
1174 .ops = &ctrl_ops,
1175 .id = V4L2_CID_HFLIP,
1176 .name = "Image h-Flip",
1177 .type = V4L2_CTRL_TYPE_INTEGER,
1178 .min = 0,
1179 .max = 1,
1180 .step = 1,
1181 .def = 0,
1182 },
1183 {
1184 .ops = &ctrl_ops,
1185 .id = V4L2_CID_EXPOSURE_ABSOLUTE,
1186 .name = "exposure",
1187 .type = V4L2_CTRL_TYPE_INTEGER,
1188 .min = 0,
1189 .max = 0xffff,
1190 .step = 1,
1191 .def = 0,
1192 .flags = 0,
1193 },
1194 {
1195 .ops = &ctrl_ops,
1196 .id = V4L2_CID_EXPOSURE_ZONE_NUM,
1197 .name = "one-time exposure zone number",
1198 .type = V4L2_CTRL_TYPE_INTEGER,
1199 .min = 0,
1200 .max = 0xffff,
1201 .step = 1,
1202 .def = 0,
1203 .flags = 0,
1204 },
1205 {
1206 .ops = &ctrl_ops,
1207 .id = V4L2_CID_EXPOSURE_METERING,
1208 .name = "metering",
1209 .type = V4L2_CTRL_TYPE_MENU,
1210 .min = 0,
1211 .max = 3,
1212 .step = 0,
1213 .def = 1,
1214 .flags = 0,
1215 },
1216 {
1217 .ops = &ctrl_ops,
1218 .id = V4L2_CID_EXPOSURE,
1219 .name = "exposure biasx",
1220 .type = V4L2_CTRL_TYPE_INTEGER,
1221 .min = -2,
1222 .max = 2,
1223 .step = 1,
1224 .def = 0,
1225 .flags = 0,
1226 },
1227 {
1228 .ops = &ctrl_ops,
1229 .id = V4L2_CID_3A_LOCK,
1230 .name = "3a lock",
1231 .type = V4L2_CTRL_TYPE_BITMASK,
1232 .min = 0,
1233 .max = V4L2_LOCK_EXPOSURE | V4L2_LOCK_WHITE_BALANCE | V4L2_LOCK_FOCUS,
1234 .step = 1,
1235 .def = 0,
1236 .flags = 0,
1237 },
1238 };
1239
mt9m114_detect(struct mt9m114_device * dev,struct i2c_client * client)1240 static int mt9m114_detect(struct mt9m114_device *dev, struct i2c_client *client)
1241 {
1242 struct i2c_adapter *adapter = client->adapter;
1243 u32 model;
1244 int ret;
1245
1246 if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) {
1247 dev_err(&client->dev, "%s: i2c error", __func__);
1248 return -ENODEV;
1249 }
1250 ret = mt9m114_read_reg(client, MISENSOR_16BIT, MT9M114_PID, &model);
1251 if (ret)
1252 return ret;
1253 dev->real_model_id = model;
1254
1255 if (model != MT9M114_MOD_ID) {
1256 dev_err(&client->dev, "%s: failed: client->addr = %x\n",
1257 __func__, client->addr);
1258 return -ENODEV;
1259 }
1260
1261 return 0;
1262 }
1263
1264 static int
mt9m114_s_config(struct v4l2_subdev * sd,int irq,void * platform_data)1265 mt9m114_s_config(struct v4l2_subdev *sd, int irq, void *platform_data)
1266 {
1267 struct mt9m114_device *dev = to_mt9m114_sensor(sd);
1268 struct i2c_client *client = v4l2_get_subdevdata(sd);
1269 int ret;
1270
1271 if (!platform_data)
1272 return -ENODEV;
1273
1274 dev->platform_data =
1275 (struct camera_sensor_platform_data *)platform_data;
1276
1277 ret = power_up(sd);
1278 if (ret) {
1279 v4l2_err(client, "mt9m114 power-up err");
1280 return ret;
1281 }
1282
1283 /* config & detect sensor */
1284 ret = mt9m114_detect(dev, client);
1285 if (ret) {
1286 v4l2_err(client, "mt9m114_detect err s_config.\n");
1287 goto fail_detect;
1288 }
1289
1290 ret = dev->platform_data->csi_cfg(sd, 1);
1291 if (ret)
1292 goto fail_csi_cfg;
1293
1294 ret = mt9m114_set_suspend(sd);
1295 if (ret) {
1296 v4l2_err(client, "mt9m114 suspend err");
1297 return ret;
1298 }
1299
1300 ret = power_down(sd);
1301 if (ret) {
1302 v4l2_err(client, "mt9m114 power down err");
1303 return ret;
1304 }
1305
1306 return ret;
1307
1308 fail_csi_cfg:
1309 dev->platform_data->csi_cfg(sd, 0);
1310 fail_detect:
1311 power_down(sd);
1312 dev_err(&client->dev, "sensor power-gating failed\n");
1313 return ret;
1314 }
1315
1316 /* Horizontal flip the image. */
mt9m114_t_hflip(struct v4l2_subdev * sd,int value)1317 static int mt9m114_t_hflip(struct v4l2_subdev *sd, int value)
1318 {
1319 struct i2c_client *c = v4l2_get_subdevdata(sd);
1320 struct mt9m114_device *dev = to_mt9m114_sensor(sd);
1321 int err;
1322 /* set for direct mode */
1323 err = mt9m114_write_reg(c, MISENSOR_16BIT, 0x098E, 0xC850);
1324 if (value) {
1325 /* enable H flip ctx A */
1326 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC850, 0x01, 0x01);
1327 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC851, 0x01, 0x01);
1328 /* ctx B */
1329 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC888, 0x01, 0x01);
1330 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC889, 0x01, 0x01);
1331
1332 err += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE,
1333 MISENSOR_HFLIP_MASK, MISENSOR_FLIP_EN);
1334
1335 dev->bpat = MT9M114_BPAT_GRGRBGBG;
1336 } else {
1337 /* disable H flip ctx A */
1338 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC850, 0x01, 0x00);
1339 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC851, 0x01, 0x00);
1340 /* ctx B */
1341 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC888, 0x01, 0x00);
1342 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC889, 0x01, 0x00);
1343
1344 err += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE,
1345 MISENSOR_HFLIP_MASK, MISENSOR_FLIP_DIS);
1346
1347 dev->bpat = MT9M114_BPAT_BGBGGRGR;
1348 }
1349
1350 err += mt9m114_write_reg(c, MISENSOR_8BIT, 0x8404, 0x06);
1351 udelay(10);
1352
1353 return !!err;
1354 }
1355
1356 /* Vertically flip the image */
mt9m114_t_vflip(struct v4l2_subdev * sd,int value)1357 static int mt9m114_t_vflip(struct v4l2_subdev *sd, int value)
1358 {
1359 struct i2c_client *c = v4l2_get_subdevdata(sd);
1360 int err;
1361 /* set for direct mode */
1362 err = mt9m114_write_reg(c, MISENSOR_16BIT, 0x098E, 0xC850);
1363 if (value >= 1) {
1364 /* enable H flip - ctx A */
1365 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC850, 0x02, 0x01);
1366 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC851, 0x02, 0x01);
1367 /* ctx B */
1368 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC888, 0x02, 0x01);
1369 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC889, 0x02, 0x01);
1370
1371 err += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE,
1372 MISENSOR_VFLIP_MASK, MISENSOR_FLIP_EN);
1373 } else {
1374 /* disable H flip - ctx A */
1375 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC850, 0x02, 0x00);
1376 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC851, 0x02, 0x00);
1377 /* ctx B */
1378 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC888, 0x02, 0x00);
1379 err += misensor_rmw_reg(c, MISENSOR_8BIT, 0xC889, 0x02, 0x00);
1380
1381 err += misensor_rmw_reg(c, MISENSOR_16BIT, MISENSOR_READ_MODE,
1382 MISENSOR_VFLIP_MASK, MISENSOR_FLIP_DIS);
1383 }
1384
1385 err += mt9m114_write_reg(c, MISENSOR_8BIT, 0x8404, 0x06);
1386 udelay(10);
1387
1388 return !!err;
1389 }
1390
mt9m114_g_frame_interval(struct v4l2_subdev * sd,struct v4l2_subdev_frame_interval * interval)1391 static int mt9m114_g_frame_interval(struct v4l2_subdev *sd,
1392 struct v4l2_subdev_frame_interval *interval)
1393 {
1394 struct mt9m114_device *dev = to_mt9m114_sensor(sd);
1395
1396 interval->interval.numerator = 1;
1397 interval->interval.denominator = mt9m114_res[dev->res].fps;
1398
1399 return 0;
1400 }
1401
mt9m114_s_stream(struct v4l2_subdev * sd,int enable)1402 static int mt9m114_s_stream(struct v4l2_subdev *sd, int enable)
1403 {
1404 int ret;
1405 struct i2c_client *c = v4l2_get_subdevdata(sd);
1406 struct mt9m114_device *dev = to_mt9m114_sensor(sd);
1407 struct atomisp_exposure exposure;
1408
1409 if (enable) {
1410 ret = mt9m114_write_reg_array(c, mt9m114_chgstat_reg,
1411 POST_POLLING);
1412 if (ret < 0)
1413 return ret;
1414
1415 if (dev->first_exp > MT9M114_MAX_FIRST_EXP) {
1416 exposure.integration_time[0] = dev->first_exp;
1417 exposure.gain[0] = dev->first_gain;
1418 exposure.gain[1] = dev->first_diggain;
1419 mt9m114_s_exposure(sd, &exposure);
1420 }
1421 dev->streamon = 1;
1422
1423 } else {
1424 dev->streamon = 0;
1425 ret = mt9m114_set_suspend(sd);
1426 }
1427
1428 return ret;
1429 }
1430
mt9m114_enum_mbus_code(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_mbus_code_enum * code)1431 static int mt9m114_enum_mbus_code(struct v4l2_subdev *sd,
1432 struct v4l2_subdev_state *sd_state,
1433 struct v4l2_subdev_mbus_code_enum *code)
1434 {
1435 if (code->index)
1436 return -EINVAL;
1437 code->code = MEDIA_BUS_FMT_SGRBG10_1X10;
1438
1439 return 0;
1440 }
1441
mt9m114_enum_frame_size(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_frame_size_enum * fse)1442 static int mt9m114_enum_frame_size(struct v4l2_subdev *sd,
1443 struct v4l2_subdev_state *sd_state,
1444 struct v4l2_subdev_frame_size_enum *fse)
1445 {
1446 unsigned int index = fse->index;
1447
1448 if (index >= N_RES)
1449 return -EINVAL;
1450
1451 fse->min_width = mt9m114_res[index].width;
1452 fse->min_height = mt9m114_res[index].height;
1453 fse->max_width = mt9m114_res[index].width;
1454 fse->max_height = mt9m114_res[index].height;
1455
1456 return 0;
1457 }
1458
mt9m114_g_skip_frames(struct v4l2_subdev * sd,u32 * frames)1459 static int mt9m114_g_skip_frames(struct v4l2_subdev *sd, u32 *frames)
1460 {
1461 int index;
1462 struct mt9m114_device *snr = to_mt9m114_sensor(sd);
1463
1464 if (!frames)
1465 return -EINVAL;
1466
1467 for (index = 0; index < N_RES; index++) {
1468 if (mt9m114_res[index].res == snr->res)
1469 break;
1470 }
1471
1472 if (index >= N_RES)
1473 return -EINVAL;
1474
1475 *frames = mt9m114_res[index].skip_frames;
1476
1477 return 0;
1478 }
1479
1480 static const struct v4l2_subdev_video_ops mt9m114_video_ops = {
1481 .s_stream = mt9m114_s_stream,
1482 .g_frame_interval = mt9m114_g_frame_interval,
1483 };
1484
1485 static const struct v4l2_subdev_sensor_ops mt9m114_sensor_ops = {
1486 .g_skip_frames = mt9m114_g_skip_frames,
1487 };
1488
1489 static const struct v4l2_subdev_core_ops mt9m114_core_ops = {
1490 .s_power = mt9m114_s_power,
1491 .ioctl = mt9m114_ioctl,
1492 };
1493
1494 /* REVISIT: Do we need pad operations? */
1495 static const struct v4l2_subdev_pad_ops mt9m114_pad_ops = {
1496 .enum_mbus_code = mt9m114_enum_mbus_code,
1497 .enum_frame_size = mt9m114_enum_frame_size,
1498 .get_fmt = mt9m114_get_fmt,
1499 .set_fmt = mt9m114_set_fmt,
1500 .set_selection = mt9m114_s_exposure_selection,
1501 };
1502
1503 static const struct v4l2_subdev_ops mt9m114_ops = {
1504 .core = &mt9m114_core_ops,
1505 .video = &mt9m114_video_ops,
1506 .pad = &mt9m114_pad_ops,
1507 .sensor = &mt9m114_sensor_ops,
1508 };
1509
mt9m114_remove(struct i2c_client * client)1510 static void mt9m114_remove(struct i2c_client *client)
1511 {
1512 struct mt9m114_device *dev;
1513 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1514
1515 dev = container_of(sd, struct mt9m114_device, sd);
1516 dev->platform_data->csi_cfg(sd, 0);
1517 v4l2_device_unregister_subdev(sd);
1518 media_entity_cleanup(&dev->sd.entity);
1519 v4l2_ctrl_handler_free(&dev->ctrl_handler);
1520 kfree(dev);
1521 }
1522
mt9m114_probe(struct i2c_client * client)1523 static int mt9m114_probe(struct i2c_client *client)
1524 {
1525 struct mt9m114_device *dev;
1526 int ret = 0;
1527 unsigned int i;
1528 void *pdata;
1529
1530 /* Setup sensor configuration structure */
1531 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
1532 if (!dev)
1533 return -ENOMEM;
1534
1535 v4l2_i2c_subdev_init(&dev->sd, client, &mt9m114_ops);
1536 pdata = gmin_camera_platform_data(&dev->sd,
1537 ATOMISP_INPUT_FORMAT_RAW_10,
1538 atomisp_bayer_order_grbg);
1539 if (pdata)
1540 ret = mt9m114_s_config(&dev->sd, client->irq, pdata);
1541 if (!pdata || ret) {
1542 v4l2_device_unregister_subdev(&dev->sd);
1543 kfree(dev);
1544 return ret;
1545 }
1546
1547 ret = atomisp_register_i2c_module(&dev->sd, pdata, RAW_CAMERA);
1548 if (ret) {
1549 v4l2_device_unregister_subdev(&dev->sd);
1550 kfree(dev);
1551 /* Coverity CID 298095 - return on error */
1552 return ret;
1553 }
1554
1555 /* TODO add format code here */
1556 dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1557 dev->pad.flags = MEDIA_PAD_FL_SOURCE;
1558 dev->format.code = MEDIA_BUS_FMT_SGRBG10_1X10;
1559 dev->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
1560
1561 ret =
1562 v4l2_ctrl_handler_init(&dev->ctrl_handler,
1563 ARRAY_SIZE(mt9m114_controls));
1564 if (ret) {
1565 mt9m114_remove(client);
1566 return ret;
1567 }
1568
1569 for (i = 0; i < ARRAY_SIZE(mt9m114_controls); i++)
1570 v4l2_ctrl_new_custom(&dev->ctrl_handler, &mt9m114_controls[i],
1571 NULL);
1572
1573 if (dev->ctrl_handler.error) {
1574 mt9m114_remove(client);
1575 return dev->ctrl_handler.error;
1576 }
1577
1578 /* Use same lock for controls as for everything else. */
1579 dev->ctrl_handler.lock = &dev->input_lock;
1580 dev->sd.ctrl_handler = &dev->ctrl_handler;
1581
1582 /* REVISIT: Do we need media controller? */
1583 ret = media_entity_pads_init(&dev->sd.entity, 1, &dev->pad);
1584 if (ret) {
1585 mt9m114_remove(client);
1586 return ret;
1587 }
1588 return 0;
1589 }
1590
1591 static const struct acpi_device_id mt9m114_acpi_match[] = {
1592 { "INT33F0" },
1593 { "CRMT1040" },
1594 {},
1595 };
1596 MODULE_DEVICE_TABLE(acpi, mt9m114_acpi_match);
1597
1598 static struct i2c_driver mt9m114_driver = {
1599 .driver = {
1600 .name = "mt9m114",
1601 .acpi_match_table = mt9m114_acpi_match,
1602 },
1603 .probe = mt9m114_probe,
1604 .remove = mt9m114_remove,
1605 };
1606 module_i2c_driver(mt9m114_driver);
1607
1608 MODULE_AUTHOR("Shuguang Gong <Shuguang.gong@intel.com>");
1609 MODULE_LICENSE("GPL");
1610