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media: staging: atomisp: Switch i2c drivers to use ->probe_new()
[mirror_ubuntu-bionic-kernel.git] / drivers / staging / media / atomisp / i2c / atomisp-ov2722.c
CommitLineData
a49d2536
AC		 1/*
2 * Support for OmniVision OV2722 1080p HD camera sensor.
3 *
4 * Copyright (c) 2013 Intel Corporation. All Rights Reserved.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License version
8 * 2 as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
a49d2536
AC		 15 */
16
17#include <linux/module.h>
18#include <linux/types.h>
19#include <linux/kernel.h>
20#include <linux/mm.h>
21#include <linux/string.h>
22#include <linux/errno.h>
23#include <linux/init.h>
24#include <linux/kmod.h>
25#include <linux/device.h>
26#include <linux/delay.h>
27#include <linux/slab.h>
28#include <linux/i2c.h>
29#include <linux/gpio.h>
30#include <linux/moduleparam.h>
31#include <media/v4l2-device.h>
25016567 32#include "../include/linux/atomisp_gmin_platform.h"
a49d2536
AC		 33#include <linux/acpi.h>
34#include <linux/io.h>
35
36#include "ov2722.h"
37
38/* i2c read/write stuff */
39static int ov2722_read_reg(struct i2c_client *client,
40 u16 data_length, u16 reg, u16 *val)
41{
42 int err;
43 struct i2c_msg msg[2];
44 unsigned char data[6];
45
46 if (!client->adapter) {
47 dev_err(&client->dev, "%s error, no client->adapter\n",
48 __func__);
49 return -ENODEV;
50 }
51
52 if (data_length != OV2722_8BIT && data_length != OV2722_16BIT
53 && data_length != OV2722_32BIT) {
54 dev_err(&client->dev, "%s error, invalid data length\n",
55 __func__);
56 return -EINVAL;
57 }
58
59 memset(msg, 0 , sizeof(msg));
60
61 msg[0].addr = client->addr;
62 msg[0].flags = 0;
63 msg[0].len = I2C_MSG_LENGTH;
64 msg[0].buf = data;
65
66 /* high byte goes out first */
67 data[0] = (u8)(reg >> 8);
68 data[1] = (u8)(reg & 0xff);
69
70 msg[1].addr = client->addr;
71 msg[1].len = data_length;
72 msg[1].flags = I2C_M_RD;
73 msg[1].buf = data;
74
75 err = i2c_transfer(client->adapter, msg, 2);
76 if (err != 2) {
77 if (err >= 0)
78 err = -EIO;
79 dev_err(&client->dev,
80 "read from offset 0x%x error %d", reg, err);
81 return err;
82 }
83
84 *val = 0;
85 /* high byte comes first */
86 if (data_length == OV2722_8BIT)
87 *val = (u8)data[0];
88 else if (data_length == OV2722_16BIT)
89 *val = be16_to_cpu(*(u16 *)&data[0]);
90 else
91 *val = be32_to_cpu(*(u32 *)&data[0]);
92
93 return 0;
94}
95
96static int ov2722_i2c_write(struct i2c_client *client, u16 len, u8 *data)
97{
98 struct i2c_msg msg;
99 const int num_msg = 1;
100 int ret;
101
102 msg.addr = client->addr;
103 msg.flags = 0;
104 msg.len = len;
105 msg.buf = data;
106 ret = i2c_transfer(client->adapter, &msg, 1);
107
108 return ret == num_msg ? 0 : -EIO;
109}
110
111static int ov2722_write_reg(struct i2c_client *client, u16 data_length,
112 u16 reg, u16 val)
113{
114 int ret;
115 unsigned char data[4] = {0};
116 u16 *wreg = (u16 *)data;
117 const u16 len = data_length + sizeof(u16); /* 16-bit address + data */
118
119 if (data_length != OV2722_8BIT && data_length != OV2722_16BIT) {
120 dev_err(&client->dev,
121 "%s error, invalid data_length\n", __func__);
122 return -EINVAL;
123 }
124
125 /* high byte goes out first */
126 *wreg = cpu_to_be16(reg);
127
128 if (data_length == OV2722_8BIT) {
129 data[2] = (u8)(val);
130 } else {
131 /* OV2722_16BIT */
132 u16 *wdata = (u16 *)&data[2];
133 *wdata = cpu_to_be16(val);
134 }
135
136 ret = ov2722_i2c_write(client, len, data);
137 if (ret)
138 dev_err(&client->dev,
139 "write error: wrote 0x%x to offset 0x%x error %d",
140 val, reg, ret);
141
142 return ret;
143}
144
145/*
146 * ov2722_write_reg_array - Initializes a list of OV2722 registers
147 * @client: i2c driver client structure
148 * @reglist: list of registers to be written
149 *
150 * This function initializes a list of registers. When consecutive addresses
151 * are found in a row on the list, this function creates a buffer and sends
152 * consecutive data in a single i2c_transfer().
153 *
154 * __ov2722_flush_reg_array, __ov2722_buf_reg_array() and
155 * __ov2722_write_reg_is_consecutive() are internal functions to
156 * ov2722_write_reg_array_fast() and should be not used anywhere else.
157 *
158 */
159
160static int __ov2722_flush_reg_array(struct i2c_client *client,
161 struct ov2722_write_ctrl *ctrl)
162{
163 u16 size;
164
165 if (ctrl->index == 0)
166 return 0;
167
168 size = sizeof(u16) + ctrl->index; /* 16-bit address + data */
169 ctrl->buffer.addr = cpu_to_be16(ctrl->buffer.addr);
170 ctrl->index = 0;
171
172 return ov2722_i2c_write(client, size, (u8 *)&ctrl->buffer);
173}
174
175static int __ov2722_buf_reg_array(struct i2c_client *client,
176 struct ov2722_write_ctrl *ctrl,
177 const struct ov2722_reg *next)
178{
179 int size;
180 u16 *data16;
181
182 switch (next->type) {
183 case OV2722_8BIT:
184 size = 1;
185 ctrl->buffer.data[ctrl->index] = (u8)next->val;
186 break;
187 case OV2722_16BIT:
188 size = 2;
189 data16 = (u16 *)&ctrl->buffer.data[ctrl->index];
190 *data16 = cpu_to_be16((u16)next->val);
191 break;
192 default:
193 return -EINVAL;
194 }
195
196 /* When first item is added, we need to store its starting address */
197 if (ctrl->index == 0)
198 ctrl->buffer.addr = next->reg;
199
200 ctrl->index += size;
201
202 /*
203 * Buffer cannot guarantee free space for u32? Better flush it to avoid
204 * possible lack of memory for next item.
205 */
206 if (ctrl->index + sizeof(u16) >= OV2722_MAX_WRITE_BUF_SIZE)
207 return __ov2722_flush_reg_array(client, ctrl);
208
209 return 0;
210}
211
212static int __ov2722_write_reg_is_consecutive(struct i2c_client *client,
213 struct ov2722_write_ctrl *ctrl,
214 const struct ov2722_reg *next)
215{
216 if (ctrl->index == 0)
217 return 1;
218
219 return ctrl->buffer.addr + ctrl->index == next->reg;
220}
221
222static int ov2722_write_reg_array(struct i2c_client *client,
223 const struct ov2722_reg *reglist)
224{
225 const struct ov2722_reg *next = reglist;
226 struct ov2722_write_ctrl ctrl;
227 int err;
228
229 ctrl.index = 0;
230 for (; next->type != OV2722_TOK_TERM; next++) {
231 switch (next->type & OV2722_TOK_MASK) {
232 case OV2722_TOK_DELAY:
233 err = __ov2722_flush_reg_array(client, &ctrl);
234 if (err)
235 return err;
236 msleep(next->val);
237 break;
238 default:
239 /*
240 * If next address is not consecutive, data needs to be
241 * flushed before proceed.
242 */
243 if (!__ov2722_write_reg_is_consecutive(client, &ctrl,
244 next)) {
245 err = __ov2722_flush_reg_array(client, &ctrl);
246 if (err)
247 return err;
248 }
249 err = __ov2722_buf_reg_array(client, &ctrl, next);
250 if (err) {
251 dev_err(&client->dev, "%s: write error, aborted\n",
252 __func__);
253 return err;
254 }
255 break;
256 }
257 }
258
259 return __ov2722_flush_reg_array(client, &ctrl);
260}
261static int ov2722_g_focal(struct v4l2_subdev *sd, s32 *val)
262{
263 *val = (OV2722_FOCAL_LENGTH_NUM << 16) | OV2722_FOCAL_LENGTH_DEM;
264 return 0;
265}
266
267static int ov2722_g_fnumber(struct v4l2_subdev *sd, s32 *val)
268{
269 /*const f number for imx*/
270 *val = (OV2722_F_NUMBER_DEFAULT_NUM << 16) | OV2722_F_NUMBER_DEM;
271 return 0;
272}
273
274static int ov2722_g_fnumber_range(struct v4l2_subdev *sd, s32 *val)
275{
276 *val = (OV2722_F_NUMBER_DEFAULT_NUM << 24) |
277 (OV2722_F_NUMBER_DEM << 16) |
278 (OV2722_F_NUMBER_DEFAULT_NUM << 8) | OV2722_F_NUMBER_DEM;
279 return 0;
280}
281
282static int ov2722_get_intg_factor(struct i2c_client *client,
283 struct camera_mipi_info *info,
284 const struct ov2722_resolution *res)
285{
286 struct v4l2_subdev *sd = i2c_get_clientdata(client);
287 struct ov2722_device *dev = NULL;
288 struct atomisp_sensor_mode_data *buf = &info->data;
289 const unsigned int ext_clk_freq_hz = 19200000;
290 const unsigned int pll_invariant_div = 10;
291 unsigned int pix_clk_freq_hz;
292 u16 pre_pll_clk_div;
293 u16 pll_multiplier;
294 u16 op_pix_clk_div;
295 u16 reg_val;
296 int ret;
297
c9d9602f 298 if (!info)
a49d2536
AC		 299 return -EINVAL;
300
301 dev = to_ov2722_sensor(sd);
302
303 /* pixel clock calculattion */
304 ret = ov2722_read_reg(client, OV2722_8BIT,
305 OV2722_SC_CMMN_PLL_CTRL3, &pre_pll_clk_div);
306 if (ret)
307 return ret;
308
309 ret = ov2722_read_reg(client, OV2722_8BIT,
310 OV2722_SC_CMMN_PLL_MULTIPLIER, &pll_multiplier);
311 if (ret)
312 return ret;
313
314 ret = ov2722_read_reg(client, OV2722_8BIT,
315 OV2722_SC_CMMN_PLL_DEBUG_OPT, &op_pix_clk_div);
316 if (ret)
317 return ret;
318
319 pre_pll_clk_div = (pre_pll_clk_div & 0x70) >> 4;
320 if (0 == pre_pll_clk_div)
321 return -EINVAL;
322
323 pll_multiplier = pll_multiplier & 0x7f;
324 op_pix_clk_div = op_pix_clk_div & 0x03;
325 pix_clk_freq_hz = ext_clk_freq_hz / pre_pll_clk_div * pll_multiplier
56b41836 326 * op_pix_clk_div / pll_invariant_div;
a49d2536
AC		 327
328 dev->vt_pix_clk_freq_mhz = pix_clk_freq_hz;
329 buf->vt_pix_clk_freq_mhz = pix_clk_freq_hz;
330
331 /* get integration time */
332 buf->coarse_integration_time_min = OV2722_COARSE_INTG_TIME_MIN;
333 buf->coarse_integration_time_max_margin =
334 OV2722_COARSE_INTG_TIME_MAX_MARGIN;
335
336 buf->fine_integration_time_min = OV2722_FINE_INTG_TIME_MIN;
337 buf->fine_integration_time_max_margin =
338 OV2722_FINE_INTG_TIME_MAX_MARGIN;
339
340 buf->fine_integration_time_def = OV2722_FINE_INTG_TIME_MIN;
341 buf->frame_length_lines = res->lines_per_frame;
342 buf->line_length_pck = res->pixels_per_line;
343 buf->read_mode = res->bin_mode;
344
345 /* get the cropping and output resolution to ISP for this mode. */
346 ret = ov2722_read_reg(client, OV2722_16BIT,
347 OV2722_H_CROP_START_H, &reg_val);
348 if (ret)
349 return ret;
350 buf->crop_horizontal_start = reg_val;
351
352 ret = ov2722_read_reg(client, OV2722_16BIT,
353 OV2722_V_CROP_START_H, &reg_val);
354 if (ret)
355 return ret;
356 buf->crop_vertical_start = reg_val;
357
358 ret = ov2722_read_reg(client, OV2722_16BIT,
359 OV2722_H_CROP_END_H, &reg_val);
360 if (ret)
361 return ret;
362 buf->crop_horizontal_end = reg_val;
363
364 ret = ov2722_read_reg(client, OV2722_16BIT,
365 OV2722_V_CROP_END_H, &reg_val);
366 if (ret)
367 return ret;
368 buf->crop_vertical_end = reg_val;
369
370 ret = ov2722_read_reg(client, OV2722_16BIT,
371 OV2722_H_OUTSIZE_H, &reg_val);
372 if (ret)
373 return ret;
374 buf->output_width = reg_val;
375
376 ret = ov2722_read_reg(client, OV2722_16BIT,
377 OV2722_V_OUTSIZE_H, &reg_val);
378 if (ret)
379 return ret;
380 buf->output_height = reg_val;
381
382 buf->binning_factor_x = res->bin_factor_x ?
383 res->bin_factor_x : 1;
384 buf->binning_factor_y = res->bin_factor_y ?
385 res->bin_factor_y : 1;
386 return 0;
387}
388
389static long __ov2722_set_exposure(struct v4l2_subdev *sd, int coarse_itg,
390 int gain, int digitgain)
391
392{
393 struct i2c_client *client = v4l2_get_subdevdata(sd);
394 struct ov2722_device *dev = to_ov2722_sensor(sd);
395 u16 hts, vts;
396 int ret;
397
398 dev_dbg(&client->dev, "set_exposure without group hold\n");
399
400 /* clear VTS_DIFF on manual mode */
401 ret = ov2722_write_reg(client, OV2722_16BIT, OV2722_VTS_DIFF_H, 0);
402 if (ret)
403 return ret;
404
405 hts = dev->pixels_per_line;
406 vts = dev->lines_per_frame;
407
408 if ((coarse_itg + OV2722_COARSE_INTG_TIME_MAX_MARGIN) > vts)
409 vts = coarse_itg + OV2722_COARSE_INTG_TIME_MAX_MARGIN;
410
411 coarse_itg <<= 4;
412 digitgain <<= 2;
413
414 ret = ov2722_write_reg(client, OV2722_16BIT,
415 OV2722_VTS_H, vts);
416 if (ret)
417 return ret;
418
419 ret = ov2722_write_reg(client, OV2722_16BIT,
420 OV2722_HTS_H, hts);
421 if (ret)
422 return ret;
423
424 /* set exposure */
425 ret = ov2722_write_reg(client, OV2722_8BIT,
426 OV2722_AEC_PK_EXPO_L,
427 coarse_itg & 0xff);
428 if (ret)
429 return ret;
430
431 ret = ov2722_write_reg(client, OV2722_16BIT,
432 OV2722_AEC_PK_EXPO_H,
433 (coarse_itg >> 8) & 0xfff);
434 if (ret)
435 return ret;
436
437 /* set analog gain */
438 ret = ov2722_write_reg(client, OV2722_16BIT,
439 OV2722_AGC_ADJ_H, gain);
440 if (ret)
441 return ret;
442
443 /* set digital gain */
444 ret = ov2722_write_reg(client, OV2722_16BIT,
445 OV2722_MWB_GAIN_R_H, digitgain);
446 if (ret)
447 return ret;
448
449 ret = ov2722_write_reg(client, OV2722_16BIT,
450 OV2722_MWB_GAIN_G_H, digitgain);
451 if (ret)
452 return ret;
453
454 ret = ov2722_write_reg(client, OV2722_16BIT,
455 OV2722_MWB_GAIN_B_H, digitgain);
456
457 return ret;
458}
459
460static int ov2722_set_exposure(struct v4l2_subdev *sd, int exposure,
461 int gain, int digitgain)
462{
463 struct ov2722_device *dev = to_ov2722_sensor(sd);
464 int ret;
465
466 mutex_lock(&dev->input_lock);
467 ret = __ov2722_set_exposure(sd, exposure, gain, digitgain);
468 mutex_unlock(&dev->input_lock);
469
470 return ret;
471}
472
473static long ov2722_s_exposure(struct v4l2_subdev *sd,
474 struct atomisp_exposure *exposure)
475{
476 int exp = exposure->integration_time[0];
477 int gain = exposure->gain[0];
478 int digitgain = exposure->gain[1];
479
480 /* we should not accept the invalid value below. */
481 if (gain == 0) {
482 struct i2c_client *client = v4l2_get_subdevdata(sd);
483 v4l2_err(client, "%s: invalid value\n", __func__);
484 return -EINVAL;
485 }
486
487 return ov2722_set_exposure(sd, exp, gain, digitgain);
488}
489
490static long ov2722_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
491{
492
493 switch (cmd) {
494 case ATOMISP_IOC_S_EXPOSURE:
495 return ov2722_s_exposure(sd, arg);
496 default:
497 return -EINVAL;
498 }
499 return 0;
500}
501
502/* This returns the exposure time being used. This should only be used
e17a17a0
VR		 503 * for filling in EXIF data, not for actual image processing.
504 */
a49d2536
AC		 505static int ov2722_q_exposure(struct v4l2_subdev *sd, s32 *value)
506{
507 struct i2c_client *client = v4l2_get_subdevdata(sd);
508 u16 reg_v, reg_v2;
509 int ret;
510
511 /* get exposure */
512 ret = ov2722_read_reg(client, OV2722_8BIT,
513 OV2722_AEC_PK_EXPO_L,
514 &reg_v);
515 if (ret)
516 goto err;
517
518 ret = ov2722_read_reg(client, OV2722_8BIT,
519 OV2722_AEC_PK_EXPO_M,
520 &reg_v2);
521 if (ret)
522 goto err;
523
524 reg_v += reg_v2 << 8;
525 ret = ov2722_read_reg(client, OV2722_8BIT,
526 OV2722_AEC_PK_EXPO_H,
527 &reg_v2);
528 if (ret)
529 goto err;
530
531 *value = reg_v + (((u32)reg_v2 << 16));
532err:
533 return ret;
534}
535
536static int ov2722_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
537{
538 struct ov2722_device *dev =
539 container_of(ctrl->handler, struct ov2722_device, ctrl_handler);
540 int ret = 0;
541 unsigned int val;
542 switch (ctrl->id) {
543 case V4L2_CID_EXPOSURE_ABSOLUTE:
544 ret = ov2722_q_exposure(&dev->sd, &ctrl->val);
545 break;
546 case V4L2_CID_FOCAL_ABSOLUTE:
547 ret = ov2722_g_focal(&dev->sd, &ctrl->val);
548 break;
549 case V4L2_CID_FNUMBER_ABSOLUTE:
550 ret = ov2722_g_fnumber(&dev->sd, &ctrl->val);
551 break;
552 case V4L2_CID_FNUMBER_RANGE:
553 ret = ov2722_g_fnumber_range(&dev->sd, &ctrl->val);
554 break;
555 case V4L2_CID_LINK_FREQ:
556 val = ov2722_res[dev->fmt_idx].mipi_freq;
557 if (val == 0)
558 return -EINVAL;
559
560 ctrl->val = val * 1000; /* To Hz */
561 break;
562 default:
563 ret = -EINVAL;
564 }
565
566 return ret;
567}
568
569static const struct v4l2_ctrl_ops ctrl_ops = {
570 .g_volatile_ctrl = ov2722_g_volatile_ctrl
571};
572
573struct v4l2_ctrl_config ov2722_controls[] = {
574 {
575 .ops = &ctrl_ops,
576 .id = V4L2_CID_EXPOSURE_ABSOLUTE,
577 .type = V4L2_CTRL_TYPE_INTEGER,
578 .name = "exposure",
579 .min = 0x0,
580 .max = 0xffff,
581 .step = 0x01,
582 .def = 0x00,
583 .flags = 0,
584 },
585 {
586 .ops = &ctrl_ops,
587 .id = V4L2_CID_FOCAL_ABSOLUTE,
588 .type = V4L2_CTRL_TYPE_INTEGER,
589 .name = "focal length",
590 .min = OV2722_FOCAL_LENGTH_DEFAULT,
591 .max = OV2722_FOCAL_LENGTH_DEFAULT,
592 .step = 0x01,
593 .def = OV2722_FOCAL_LENGTH_DEFAULT,
594 .flags = 0,
595 },
596 {
597 .ops = &ctrl_ops,
598 .id = V4L2_CID_FNUMBER_ABSOLUTE,
599 .type = V4L2_CTRL_TYPE_INTEGER,
600 .name = "f-number",
601 .min = OV2722_F_NUMBER_DEFAULT,
602 .max = OV2722_F_NUMBER_DEFAULT,
603 .step = 0x01,
604 .def = OV2722_F_NUMBER_DEFAULT,
605 .flags = 0,
606 },
607 {
608 .ops = &ctrl_ops,
609 .id = V4L2_CID_FNUMBER_RANGE,
610 .type = V4L2_CTRL_TYPE_INTEGER,
611 .name = "f-number range",
612 .min = OV2722_F_NUMBER_RANGE,
613 .max = OV2722_F_NUMBER_RANGE,
614 .step = 0x01,
615 .def = OV2722_F_NUMBER_RANGE,
616 .flags = 0,
617 },
618 {
619 .ops = &ctrl_ops,
620 .id = V4L2_CID_LINK_FREQ,
621 .name = "Link Frequency",
622 .type = V4L2_CTRL_TYPE_INTEGER,
623 .min = 1,
624 .max = 1500000 * 1000,
625 .step = 1,
626 .def = 1,
627 .flags = V4L2_CTRL_FLAG_VOLATILE | V4L2_CTRL_FLAG_READ_ONLY,
628 },
629};
630
631static int ov2722_init(struct v4l2_subdev *sd)
632{
633 struct ov2722_device *dev = to_ov2722_sensor(sd);
634
635 mutex_lock(&dev->input_lock);
636
637 /* restore settings */
638 ov2722_res = ov2722_res_preview;
639 N_RES = N_RES_PREVIEW;
640
641 mutex_unlock(&dev->input_lock);
642
643 return 0;
644}
645
646static int power_ctrl(struct v4l2_subdev *sd, bool flag)
647{
648 int ret = -1;
649 struct ov2722_device *dev = to_ov2722_sensor(sd);
650
651 if (!dev || !dev->platform_data)
652 return -ENODEV;
653
654 /* Non-gmin platforms use the legacy callback */
655 if (dev->platform_data->power_ctrl)
656 return dev->platform_data->power_ctrl(sd, flag);
657
658 if (flag) {
659 ret = dev->platform_data->v1p8_ctrl(sd, 1);
660 if (ret == 0) {
661 ret = dev->platform_data->v2p8_ctrl(sd, 1);
662 if (ret)
663 dev->platform_data->v1p8_ctrl(sd, 0);
664 }
665 } else {
666 ret = dev->platform_data->v1p8_ctrl(sd, 0);
667 ret |= dev->platform_data->v2p8_ctrl(sd, 0);
668 }
669
670 return ret;
671}
672
673static int gpio_ctrl(struct v4l2_subdev *sd, bool flag)
674{
675 struct ov2722_device *dev = to_ov2722_sensor(sd);
676 int ret = -1;
677
678 if (!dev || !dev->platform_data)
679 return -ENODEV;
680
681 /* Non-gmin platforms use the legacy callback */
682 if (dev->platform_data->gpio_ctrl)
683 return dev->platform_data->gpio_ctrl(sd, flag);
684
685 /* Note: the GPIO order is asymmetric: always RESET#
e17a17a0
VR		 686 * before PWDN# when turning it on or off.
687 */
a49d2536
AC		 688 ret = dev->platform_data->gpio0_ctrl(sd, flag);
689 /*
690 *ov2722 PWDN# active high when pull down,opposite to the convention
691 */
692 ret |= dev->platform_data->gpio1_ctrl(sd, !flag);
693 return ret;
694}
695
696static int power_up(struct v4l2_subdev *sd)
697{
698 struct ov2722_device *dev = to_ov2722_sensor(sd);
699 struct i2c_client *client = v4l2_get_subdevdata(sd);
700 int ret;
701
c9d9602f 702 if (!dev->platform_data) {
a49d2536
AC		 703 dev_err(&client->dev,
704 "no camera_sensor_platform_data");
705 return -ENODEV;
706 }
707
708 /* power control */
709 ret = power_ctrl(sd, 1);
710 if (ret)
711 goto fail_power;
712
713 /* according to DS, at least 5ms is needed between DOVDD and PWDN */
714 usleep_range(5000, 6000);
715
716 /* gpio ctrl */
717 ret = gpio_ctrl(sd, 1);
718 if (ret) {
719 ret = gpio_ctrl(sd, 0);
720 if (ret)
721 goto fail_power;
722 }
723
724 /* flis clock control */
725 ret = dev->platform_data->flisclk_ctrl(sd, 1);
726 if (ret)
727 goto fail_clk;
728
729 /* according to DS, 20ms is needed between PWDN and i2c access */
730 msleep(20);
731
732 return 0;
733
734fail_clk:
735 gpio_ctrl(sd, 0);
736fail_power:
737 power_ctrl(sd, 0);
738 dev_err(&client->dev, "sensor power-up failed\n");
739
740 return ret;
741}
742
743static int power_down(struct v4l2_subdev *sd)
744{
745 struct ov2722_device *dev = to_ov2722_sensor(sd);
746 struct i2c_client *client = v4l2_get_subdevdata(sd);
747 int ret = 0;
748
c9d9602f 749 if (!dev->platform_data) {
a49d2536
AC		 750 dev_err(&client->dev,
751 "no camera_sensor_platform_data");
752 return -ENODEV;
753 }
754
755 ret = dev->platform_data->flisclk_ctrl(sd, 0);
756 if (ret)
757 dev_err(&client->dev, "flisclk failed\n");
758
759 /* gpio ctrl */
760 ret = gpio_ctrl(sd, 0);
761 if (ret) {
762 ret = gpio_ctrl(sd, 0);
763 if (ret)
764 dev_err(&client->dev, "gpio failed 2\n");
765 }
766
767 /* power control */
768 ret = power_ctrl(sd, 0);
769 if (ret)
770 dev_err(&client->dev, "vprog failed.\n");
771
772 return ret;
773}
774
775static int ov2722_s_power(struct v4l2_subdev *sd, int on)
776{
777 int ret;
778 if (on == 0)
779 return power_down(sd);
780 else {
781 ret = power_up(sd);
782 if (!ret)
783 return ov2722_init(sd);
784 }
785 return ret;
786}
787
788/*
789 * distance - calculate the distance
790 * @res: resolution
791 * @w: width
792 * @h: height
793 *
794 * Get the gap between resolution and w/h.
795 * res->width/height smaller than w/h wouldn't be considered.
796 * Returns the value of gap or -1 if fail.
797 */
798#define LARGEST_ALLOWED_RATIO_MISMATCH 800
799static int distance(struct ov2722_resolution *res, u32 w, u32 h)
800{
56b41836 801 unsigned int w_ratio = (res->width << 13) / w;
a49d2536
AC		 802 unsigned int h_ratio;
803 int match;
804
805 if (h == 0)
806 return -1;
6c492211 807 h_ratio = (res->height << 13) / h;
a49d2536
AC		 808 if (h_ratio == 0)
809 return -1;
bf5d0300 810 match = abs(((w_ratio << 13) / h_ratio) - 8192);
a49d2536 811
8284d205
VR		 812 if ((w_ratio < 8192) || (h_ratio < 8192) ||
813 (match > LARGEST_ALLOWED_RATIO_MISMATCH))
a49d2536
AC		 814 return -1;
815
816 return w_ratio + h_ratio;
817}
818
819/* Return the nearest higher resolution index */
820static int nearest_resolution_index(int w, int h)
821{
822 int i;
823 int idx = -1;
824 int dist;
825 int min_dist = INT_MAX;
826 struct ov2722_resolution *tmp_res = NULL;
827
828 for (i = 0; i < N_RES; i++) {
829 tmp_res = &ov2722_res[i];
830 dist = distance(tmp_res, w, h);
831 if (dist == -1)
832 continue;
833 if (dist < min_dist) {
834 min_dist = dist;
835 idx = i;
836 }
837 }
838
839 return idx;
840}
841
842static int get_resolution_index(int w, int h)
843{
844 int i;
845
846 for (i = 0; i < N_RES; i++) {
847 if (w != ov2722_res[i].width)
848 continue;
849 if (h != ov2722_res[i].height)
850 continue;
851
852 return i;
853 }
854
855 return -1;
856}
857
858/* TODO: remove it. */
859static int startup(struct v4l2_subdev *sd)
860{
861 struct ov2722_device *dev = to_ov2722_sensor(sd);
862 struct i2c_client *client = v4l2_get_subdevdata(sd);
863 int ret = 0;
864
865 ret = ov2722_write_reg(client, OV2722_8BIT,
866 OV2722_SW_RESET, 0x01);
867 if (ret) {
868 dev_err(&client->dev, "ov2722 reset err.\n");
869 return ret;
870 }
871
872 ret = ov2722_write_reg_array(client, ov2722_res[dev->fmt_idx].regs);
873 if (ret) {
874 dev_err(&client->dev, "ov2722 write register err.\n");
875 return ret;
876 }
877
878 return ret;
879}
880
881static int ov2722_set_fmt(struct v4l2_subdev *sd,
882 struct v4l2_subdev_pad_config *cfg,
883 struct v4l2_subdev_format *format)
884{
885 struct v4l2_mbus_framefmt *fmt = &format->format;
886 struct ov2722_device *dev = to_ov2722_sensor(sd);
887 struct i2c_client *client = v4l2_get_subdevdata(sd);
888 struct camera_mipi_info *ov2722_info = NULL;
889 int ret = 0;
890 int idx;
891 if (format->pad)
892 return -EINVAL;
893 if (!fmt)
894 return -EINVAL;
895 ov2722_info = v4l2_get_subdev_hostdata(sd);
c9d9602f 896 if (!ov2722_info)
a49d2536
AC		 897 return -EINVAL;
898
899 mutex_lock(&dev->input_lock);
900 idx = nearest_resolution_index(fmt->width, fmt->height);
901 if (idx == -1) {
902 /* return the largest resolution */
903 fmt->width = ov2722_res[N_RES - 1].width;
904 fmt->height = ov2722_res[N_RES - 1].height;
905 } else {
906 fmt->width = ov2722_res[idx].width;
907 fmt->height = ov2722_res[idx].height;
908 }
909 fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
910 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
911 cfg->try_fmt = *fmt;
912 mutex_unlock(&dev->input_lock);
913 return 0;
914 }
915
916 dev->fmt_idx = get_resolution_index(fmt->width, fmt->height);
917 if (dev->fmt_idx == -1) {
918 dev_err(&client->dev, "get resolution fail\n");
919 mutex_unlock(&dev->input_lock);
920 return -EINVAL;
921 }
922
923 dev->pixels_per_line = ov2722_res[dev->fmt_idx].pixels_per_line;
924 dev->lines_per_frame = ov2722_res[dev->fmt_idx].lines_per_frame;
925
926 ret = startup(sd);
927 if (ret) {
928 int i = 0;
929 dev_err(&client->dev, "ov2722 startup err, retry to power up\n");
930 for (i = 0; i < OV2722_POWER_UP_RETRY_NUM; i++) {
931 dev_err(&client->dev,
932 "ov2722 retry to power up %d/%d times, result: ",
56b41836 933 i + 1, OV2722_POWER_UP_RETRY_NUM);
a49d2536
AC		 934 power_down(sd);
935 ret = power_up(sd);
936 if (ret) {
937 dev_err(&client->dev, "power up failed, continue\n");
938 continue;
939 }
940 ret = startup(sd);
941 if (ret) {
942 dev_err(&client->dev, " startup FAILED!\n");
943 } else {
944 dev_err(&client->dev, " startup SUCCESS!\n");
945 break;
946 }
947 }
948 if (ret) {
949 dev_err(&client->dev, "ov2722 startup err\n");
950 goto err;
951 }
952 }
953
954 ret = ov2722_get_intg_factor(client, ov2722_info,
955 &ov2722_res[dev->fmt_idx]);
956 if (ret)
957 dev_err(&client->dev, "failed to get integration_factor\n");
958
959err:
960 mutex_unlock(&dev->input_lock);
961 return ret;
962}
963static int ov2722_get_fmt(struct v4l2_subdev *sd,
964 struct v4l2_subdev_pad_config *cfg,
965 struct v4l2_subdev_format *format)
966{
967 struct v4l2_mbus_framefmt *fmt = &format->format;
968 struct ov2722_device *dev = to_ov2722_sensor(sd);
969
970 if (format->pad)
971 return -EINVAL;
972 if (!fmt)
973 return -EINVAL;
974
975 fmt->width = ov2722_res[dev->fmt_idx].width;
976 fmt->height = ov2722_res[dev->fmt_idx].height;
977 fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10;
978
979 return 0;
980}
981
982static int ov2722_detect(struct i2c_client *client)
983{
984 struct i2c_adapter *adapter = client->adapter;
985 u16 high, low;
986 int ret;
987 u16 id;
988 u8 revision;
989
990 if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
991 return -ENODEV;
992
993 ret = ov2722_read_reg(client, OV2722_8BIT,
994 OV2722_SC_CMMN_CHIP_ID_H, &high);
995 if (ret) {
996 dev_err(&client->dev, "sensor_id_high = 0x%x\n", high);
997 return -ENODEV;
998 }
999 ret = ov2722_read_reg(client, OV2722_8BIT,
1000 OV2722_SC_CMMN_CHIP_ID_L, &low);
bf5d0300 1001 id = (high << 8) | low;
a49d2536
AC		 1002
1003 if ((id != OV2722_ID) && (id != OV2720_ID)) {
1004 dev_err(&client->dev, "sensor ID error\n");
1005 return -ENODEV;
1006 }
1007
1008 ret = ov2722_read_reg(client, OV2722_8BIT,
1009 OV2722_SC_CMMN_SUB_ID, &high);
1010 revision = (u8) high & 0x0f;
1011
1012 dev_dbg(&client->dev, "sensor_revision = 0x%x\n", revision);
1013 dev_dbg(&client->dev, "detect ov2722 success\n");
1014 return 0;
1015}
1016
1017static int ov2722_s_stream(struct v4l2_subdev *sd, int enable)
1018{
1019 struct ov2722_device *dev = to_ov2722_sensor(sd);
1020 struct i2c_client *client = v4l2_get_subdevdata(sd);
1021 int ret;
1022
1023 mutex_lock(&dev->input_lock);
1024
1025 ret = ov2722_write_reg(client, OV2722_8BIT, OV2722_SW_STREAM,
1026 enable ? OV2722_START_STREAMING :
1027 OV2722_STOP_STREAMING);
1028
1029 mutex_unlock(&dev->input_lock);
1030 return ret;
1031}
1032
1033static int ov2722_s_config(struct v4l2_subdev *sd,
1034 int irq, void *platform_data)
1035{
1036 struct ov2722_device *dev = to_ov2722_sensor(sd);
1037 struct i2c_client *client = v4l2_get_subdevdata(sd);
1038 int ret = 0;
1039
c9d9602f 1040 if (!platform_data)
a49d2536
AC		 1041 return -ENODEV;
1042
1043 dev->platform_data =
1044 (struct camera_sensor_platform_data *)platform_data;
1045
1046 mutex_lock(&dev->input_lock);
1047 if (dev->platform_data->platform_init) {
1048 ret = dev->platform_data->platform_init(client);
1049 if (ret) {
1050 dev_err(&client->dev, "platform init err\n");
1051 goto platform_init_failed;
1052 }
1053 }
1054
1055 /* power off the module, then power on it in future
1056 * as first power on by board may not fulfill the
1057 * power on sequqence needed by the module
1058 */
1059 ret = power_down(sd);
1060 if (ret) {
1061 dev_err(&client->dev, "ov2722 power-off err.\n");
1062 goto fail_power_off;
1063 }
1064
1065 ret = power_up(sd);
1066 if (ret) {
1067 dev_err(&client->dev, "ov2722 power-up err.\n");
1068 goto fail_power_on;
1069 }
1070
1071 ret = dev->platform_data->csi_cfg(sd, 1);
1072 if (ret)
1073 goto fail_csi_cfg;
1074
1075 /* config & detect sensor */
1076 ret = ov2722_detect(client);
1077 if (ret) {
1078 dev_err(&client->dev, "ov2722_detect err s_config.\n");
1079 goto fail_csi_cfg;
1080 }
1081
1082 /* turn off sensor, after probed */
1083 ret = power_down(sd);
1084 if (ret) {
1085 dev_err(&client->dev, "ov2722 power-off err.\n");
1086 goto fail_csi_cfg;
1087 }
1088 mutex_unlock(&dev->input_lock);
1089
1090 return 0;
1091
1092fail_csi_cfg:
1093 dev->platform_data->csi_cfg(sd, 0);
1094fail_power_on:
1095 power_down(sd);
1096 dev_err(&client->dev, "sensor power-gating failed\n");
1097fail_power_off:
1098 if (dev->platform_data->platform_deinit)
1099 dev->platform_data->platform_deinit();
1100platform_init_failed:
1101 mutex_unlock(&dev->input_lock);
1102 return ret;
1103}
1104
1105static int ov2722_g_parm(struct v4l2_subdev *sd,
1106 struct v4l2_streamparm *param)
1107{
1108 struct ov2722_device *dev = to_ov2722_sensor(sd);
1109 struct i2c_client *client = v4l2_get_subdevdata(sd);
1110
1111 if (!param)
1112 return -EINVAL;
1113
1114 if (param->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1115 dev_err(&client->dev, "unsupported buffer type.\n");
1116 return -EINVAL;
1117 }
1118
1119 memset(param, 0, sizeof(*param));
1120 param->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1121
1122 if (dev->fmt_idx >= 0 && dev->fmt_idx < N_RES) {
1123 param->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
1124 param->parm.capture.timeperframe.numerator = 1;
1125 param->parm.capture.capturemode = dev->run_mode;
1126 param->parm.capture.timeperframe.denominator =
1127 ov2722_res[dev->fmt_idx].fps;
1128 }
1129 return 0;
1130}
1131
1132static int ov2722_s_parm(struct v4l2_subdev *sd,
1133 struct v4l2_streamparm *param)
1134{
1135 struct ov2722_device *dev = to_ov2722_sensor(sd);
1136 dev->run_mode = param->parm.capture.capturemode;
1137
1138 mutex_lock(&dev->input_lock);
1139 switch (dev->run_mode) {
1140 case CI_MODE_VIDEO:
1141 ov2722_res = ov2722_res_video;
1142 N_RES = N_RES_VIDEO;
1143 break;
1144 case CI_MODE_STILL_CAPTURE:
1145 ov2722_res = ov2722_res_still;
1146 N_RES = N_RES_STILL;
1147 break;
1148 default:
1149 ov2722_res = ov2722_res_preview;
1150 N_RES = N_RES_PREVIEW;
1151 }
1152 mutex_unlock(&dev->input_lock);
1153 return 0;
1154}
1155
1156static int ov2722_g_frame_interval(struct v4l2_subdev *sd,
1157 struct v4l2_subdev_frame_interval *interval)
1158{
1159 struct ov2722_device *dev = to_ov2722_sensor(sd);
1160
1161 interval->interval.numerator = 1;
1162 interval->interval.denominator = ov2722_res[dev->fmt_idx].fps;
1163
1164 return 0;
1165}
1166
1167static int ov2722_enum_mbus_code(struct v4l2_subdev *sd,
1168 struct v4l2_subdev_pad_config *cfg,
1169 struct v4l2_subdev_mbus_code_enum *code)
1170{
1171 if (code->index >= MAX_FMTS)
1172 return -EINVAL;
1173
1174 code->code = MEDIA_BUS_FMT_SBGGR10_1X10;
1175 return 0;
1176}
1177
1178static int ov2722_enum_frame_size(struct v4l2_subdev *sd,
1179 struct v4l2_subdev_pad_config *cfg,
1180 struct v4l2_subdev_frame_size_enum *fse)
1181{
1182 int index = fse->index;
1183
1184 if (index >= N_RES)
1185 return -EINVAL;
1186
1187 fse->min_width = ov2722_res[index].width;
1188 fse->min_height = ov2722_res[index].height;
1189 fse->max_width = ov2722_res[index].width;
1190 fse->max_height = ov2722_res[index].height;
1191
1192 return 0;
1193
1194}
1195
1196
1197static int ov2722_g_skip_frames(struct v4l2_subdev *sd, u32 *frames)
1198{
1199 struct ov2722_device *dev = to_ov2722_sensor(sd);
1200
1201 mutex_lock(&dev->input_lock);
1202 *frames = ov2722_res[dev->fmt_idx].skip_frames;
1203 mutex_unlock(&dev->input_lock);
1204
1205 return 0;
1206}
1207
1208static const struct v4l2_subdev_sensor_ops ov2722_sensor_ops = {
1209 .g_skip_frames = ov2722_g_skip_frames,
1210};
1211
1212static const struct v4l2_subdev_video_ops ov2722_video_ops = {
1213 .s_stream = ov2722_s_stream,
1214 .g_parm = ov2722_g_parm,
1215 .s_parm = ov2722_s_parm,
1216 .g_frame_interval = ov2722_g_frame_interval,
1217};
1218
1219static const struct v4l2_subdev_core_ops ov2722_core_ops = {
1220 .s_power = ov2722_s_power,
1221 .ioctl = ov2722_ioctl,
1222};
1223
1224static const struct v4l2_subdev_pad_ops ov2722_pad_ops = {
1225 .enum_mbus_code = ov2722_enum_mbus_code,
1226 .enum_frame_size = ov2722_enum_frame_size,
1227 .get_fmt = ov2722_get_fmt,
1228 .set_fmt = ov2722_set_fmt,
1229};
1230
1231static const struct v4l2_subdev_ops ov2722_ops = {
1232 .core = &ov2722_core_ops,
1233 .video = &ov2722_video_ops,
1234 .pad = &ov2722_pad_ops,
1235 .sensor = &ov2722_sensor_ops,
1236};
1237
1238static int ov2722_remove(struct i2c_client *client)
1239{
1240 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1241 struct ov2722_device *dev = to_ov2722_sensor(sd);
1242 dev_dbg(&client->dev, "ov2722_remove...\n");
1243
1244 if (dev->platform_data->platform_deinit)
1245 dev->platform_data->platform_deinit();
1246
1247 dev->platform_data->csi_cfg(sd, 0);
1248 v4l2_ctrl_handler_free(&dev->ctrl_handler);
1249 v4l2_device_unregister_subdev(sd);
1250
1251 atomisp_gmin_remove_subdev(sd);
1252
1253 media_entity_cleanup(&dev->sd.entity);
1254 kfree(dev);
1255
1256 return 0;
1257}
1258
1259static int __ov2722_init_ctrl_handler(struct ov2722_device *dev)
1260{
1261 struct v4l2_ctrl_handler *hdl;
1262 unsigned int i;
1263 hdl = &dev->ctrl_handler;
1264 v4l2_ctrl_handler_init(&dev->ctrl_handler, ARRAY_SIZE(ov2722_controls));
1265 for (i = 0; i < ARRAY_SIZE(ov2722_controls); i++)
1266 v4l2_ctrl_new_custom(&dev->ctrl_handler, &ov2722_controls[i],
1267 NULL);
1268
1269 dev->link_freq = v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_LINK_FREQ);
1270
c9d9602f 1271 if (dev->ctrl_handler.error || !dev->link_freq)
a49d2536
AC		 1272 return dev->ctrl_handler.error;
1273
1274 dev->sd.ctrl_handler = hdl;
1275
1276 return 0;
1277}
1278
e19c9205 1279static int ov2722_probe(struct i2c_client *client)
a49d2536
AC		 1280{
1281 struct ov2722_device *dev;
1282 void *ovpdev;
1283 int ret;
1284 struct acpi_device *adev;
1285
1286 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
309167b9 1287 if (!dev)
a49d2536 1288 return -ENOMEM;
a49d2536
AC		 1289
1290 mutex_init(&dev->input_lock);
1291
1292 dev->fmt_idx = 0;
1293 v4l2_i2c_subdev_init(&(dev->sd), client, &ov2722_ops);
1294
1295 ovpdev = client->dev.platform_data;
1296 adev = ACPI_COMPANION(&client->dev);
1297 if (adev) {
1298 adev->power.flags.power_resources = 0;
1299 ovpdev = gmin_camera_platform_data(&dev->sd,
1300 ATOMISP_INPUT_FORMAT_RAW_10,
1301 atomisp_bayer_order_grbg);
1302 }
1303
1304 ret = ov2722_s_config(&dev->sd, client->irq, ovpdev);
1305 if (ret)
1306 goto out_free;
1307
1308 ret = __ov2722_init_ctrl_handler(dev);
1309 if (ret)
1310 goto out_ctrl_handler_free;
1311
1312 dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1313 dev->pad.flags = MEDIA_PAD_FL_SOURCE;
1314 dev->format.code = MEDIA_BUS_FMT_SBGGR10_1X10;
1315 dev->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
1316
1317 ret = media_entity_pads_init(&dev->sd.entity, 1, &dev->pad);
1318 if (ret)
1319 ov2722_remove(client);
1320
1321 if (ACPI_HANDLE(&client->dev))
1322 ret = atomisp_register_i2c_module(&dev->sd, ovpdev, RAW_CAMERA);
1323
1324 return ret;
1325
1326out_ctrl_handler_free:
1327 v4l2_ctrl_handler_free(&dev->ctrl_handler);
1328
1329out_free:
1330 v4l2_device_unregister_subdev(&dev->sd);
1331 kfree(dev);
1332 return ret;
1333}
1334
22461d77 1335static const struct acpi_device_id ov2722_acpi_match[] = {
a49d2536
AC		 1336 { "INT33FB" },
1337 {},
1338};
a49d2536
AC		 1339MODULE_DEVICE_TABLE(acpi, ov2722_acpi_match);
1340
1341static struct i2c_driver ov2722_driver = {
1342 .driver = {
e19c9205
AS		 1343 .name = "ov2722",
1344 .acpi_match_table = ov2722_acpi_match,
a49d2536 1345 },
e19c9205 1346 .probe_new = ov2722_probe,
a49d2536 1347 .remove = ov2722_remove,
a49d2536 1348};
2cb63c4c 1349module_i2c_driver(ov2722_driver);
a49d2536
AC		 1350
1351MODULE_AUTHOR("Wei Liu <wei.liu@intel.com>");
1352MODULE_DESCRIPTION("A low-level driver for OmniVision 2722 sensors");
1353MODULE_LICENSE("GPL");
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