1
2
3
4#include <asm/unaligned.h>
5#include <linux/acpi.h>
6#include <linux/delay.h>
7#include <linux/i2c.h>
8#include <linux/module.h>
9#include <linux/pm_runtime.h>
10#include <media/v4l2-ctrls.h>
11#include <media/v4l2-device.h>
12#include <media/v4l2-fwnode.h>
13
14#define OV9734_LINK_FREQ_180MHZ 180000000ULL
15#define OV9734_SCLK 36000000LL
16#define OV9734_MCLK 19200000
17
18#define OV9734_DATA_LANES 1
19#define OV9734_RGB_DEPTH 10
20
21#define OV9734_REG_CHIP_ID 0x300a
22#define OV9734_CHIP_ID 0x9734
23
24#define OV9734_REG_MODE_SELECT 0x0100
25#define OV9734_MODE_STANDBY 0x00
26#define OV9734_MODE_STREAMING 0x01
27
28
29#define OV9734_REG_VTS 0x380e
30#define OV9734_VTS_30FPS 0x0322
31#define OV9734_VTS_30FPS_MIN 0x0322
32#define OV9734_VTS_MAX 0x7fff
33
34
35#define OV9734_REG_HTS 0x380c
36
37
38#define OV9734_REG_EXPOSURE 0x3500
39#define OV9734_EXPOSURE_MIN 4
40#define OV9734_EXPOSURE_MAX_MARGIN 4
41#define OV9734_EXPOSURE_STEP 1
42
43
44#define OV9734_REG_ANALOG_GAIN 0x350a
45#define OV9734_ANAL_GAIN_MIN 16
46#define OV9734_ANAL_GAIN_MAX 248
47#define OV9734_ANAL_GAIN_STEP 1
48
49
50#define OV9734_REG_MWB_R_GAIN 0x5180
51#define OV9734_REG_MWB_G_GAIN 0x5182
52#define OV9734_REG_MWB_B_GAIN 0x5184
53#define OV9734_DGTL_GAIN_MIN 256
54#define OV9734_DGTL_GAIN_MAX 1023
55#define OV9734_DGTL_GAIN_STEP 1
56#define OV9734_DGTL_GAIN_DEFAULT 256
57
58
59#define OV9734_REG_TEST_PATTERN 0x5080
60#define OV9734_TEST_PATTERN_ENABLE BIT(7)
61#define OV9734_TEST_PATTERN_BAR_SHIFT 2
62
63enum {
64 OV9734_LINK_FREQ_180MHZ_INDEX,
65};
66
67struct ov9734_reg {
68 u16 address;
69 u8 val;
70};
71
72struct ov9734_reg_list {
73 u32 num_of_regs;
74 const struct ov9734_reg *regs;
75};
76
77struct ov9734_link_freq_config {
78 const struct ov9734_reg_list reg_list;
79};
80
81struct ov9734_mode {
82
83 u32 width;
84
85
86 u32 height;
87
88
89 u32 hts;
90
91
92 u32 vts_def;
93
94
95 u32 vts_min;
96
97
98 u32 link_freq_index;
99
100
101 const struct ov9734_reg_list reg_list;
102};
103
104static const struct ov9734_reg mipi_data_rate_360mbps[] = {
105 {0x3030, 0x19},
106 {0x3080, 0x02},
107 {0x3081, 0x4b},
108 {0x3082, 0x04},
109 {0x3083, 0x00},
110 {0x3084, 0x02},
111 {0x3085, 0x01},
112 {0x3086, 0x01},
113 {0x3089, 0x01},
114 {0x308a, 0x00},
115 {0x301e, 0x15},
116 {0x3103, 0x01},
117};
118
119static const struct ov9734_reg mode_1296x734_regs[] = {
120 {0x3001, 0x00},
121 {0x3002, 0x00},
122 {0x3007, 0x00},
123 {0x3010, 0x00},
124 {0x3011, 0x08},
125 {0x3014, 0x22},
126 {0x3600, 0x55},
127 {0x3601, 0x02},
128 {0x3605, 0x22},
129 {0x3611, 0xe7},
130 {0x3654, 0x10},
131 {0x3655, 0x77},
132 {0x3656, 0x77},
133 {0x3657, 0x07},
134 {0x3658, 0x22},
135 {0x3659, 0x22},
136 {0x365a, 0x02},
137 {0x3784, 0x05},
138 {0x3785, 0x55},
139 {0x37c0, 0x07},
140 {0x3800, 0x00},
141 {0x3801, 0x04},
142 {0x3802, 0x00},
143 {0x3803, 0x04},
144 {0x3804, 0x05},
145 {0x3805, 0x0b},
146 {0x3806, 0x02},
147 {0x3807, 0xdb},
148 {0x3808, 0x05},
149 {0x3809, 0x00},
150 {0x380a, 0x02},
151 {0x380b, 0xd0},
152 {0x380c, 0x05},
153 {0x380d, 0xc6},
154 {0x380e, 0x03},
155 {0x380f, 0x22},
156 {0x3810, 0x00},
157 {0x3811, 0x04},
158 {0x3812, 0x00},
159 {0x3813, 0x04},
160 {0x3816, 0x00},
161 {0x3817, 0x00},
162 {0x3818, 0x00},
163 {0x3819, 0x04},
164 {0x3820, 0x18},
165 {0x3821, 0x00},
166 {0x382c, 0x06},
167 {0x3500, 0x00},
168 {0x3501, 0x31},
169 {0x3502, 0x00},
170 {0x3503, 0x03},
171 {0x3504, 0x00},
172 {0x3505, 0x00},
173 {0x3509, 0x10},
174 {0x350a, 0x00},
175 {0x350b, 0x40},
176 {0x3d00, 0x00},
177 {0x3d01, 0x00},
178 {0x3d02, 0x00},
179 {0x3d03, 0x00},
180 {0x3d04, 0x00},
181 {0x3d05, 0x00},
182 {0x3d06, 0x00},
183 {0x3d07, 0x00},
184 {0x3d08, 0x00},
185 {0x3d09, 0x00},
186 {0x3d0a, 0x00},
187 {0x3d0b, 0x00},
188 {0x3d0c, 0x00},
189 {0x3d0d, 0x00},
190 {0x3d0e, 0x00},
191 {0x3d0f, 0x00},
192 {0x3d80, 0x00},
193 {0x3d81, 0x00},
194 {0x3d82, 0x38},
195 {0x3d83, 0xa4},
196 {0x3d84, 0x00},
197 {0x3d85, 0x00},
198 {0x3d86, 0x1f},
199 {0x3d87, 0x03},
200 {0x3d8b, 0x00},
201 {0x3d8f, 0x00},
202 {0x4001, 0xe0},
203 {0x4009, 0x0b},
204 {0x4300, 0x03},
205 {0x4301, 0xff},
206 {0x4304, 0x00},
207 {0x4305, 0x00},
208 {0x4309, 0x00},
209 {0x4600, 0x00},
210 {0x4601, 0x80},
211 {0x4800, 0x00},
212 {0x4805, 0x00},
213 {0x4821, 0x50},
214 {0x4823, 0x50},
215 {0x4837, 0x2d},
216 {0x4a00, 0x00},
217 {0x4f00, 0x80},
218 {0x4f01, 0x10},
219 {0x4f02, 0x00},
220 {0x4f03, 0x00},
221 {0x4f04, 0x00},
222 {0x4f05, 0x00},
223 {0x4f06, 0x00},
224 {0x4f07, 0x00},
225 {0x4f08, 0x00},
226 {0x4f09, 0x00},
227 {0x5000, 0x2f},
228 {0x500c, 0x00},
229 {0x500d, 0x00},
230 {0x500e, 0x00},
231 {0x500f, 0x00},
232 {0x5010, 0x00},
233 {0x5011, 0x00},
234 {0x5012, 0x00},
235 {0x5013, 0x00},
236 {0x5014, 0x00},
237 {0x5015, 0x00},
238 {0x5016, 0x00},
239 {0x5017, 0x00},
240 {0x5080, 0x00},
241 {0x5180, 0x01},
242 {0x5181, 0x00},
243 {0x5182, 0x01},
244 {0x5183, 0x00},
245 {0x5184, 0x01},
246 {0x5185, 0x00},
247 {0x5708, 0x06},
248 {0x380f, 0x2a},
249 {0x5780, 0x3e},
250 {0x5781, 0x0f},
251 {0x5782, 0x44},
252 {0x5783, 0x02},
253 {0x5784, 0x01},
254 {0x5785, 0x01},
255 {0x5786, 0x00},
256 {0x5787, 0x04},
257 {0x5788, 0x02},
258 {0x5789, 0x0f},
259 {0x578a, 0xfd},
260 {0x578b, 0xf5},
261 {0x578c, 0xf5},
262 {0x578d, 0x03},
263 {0x578e, 0x08},
264 {0x578f, 0x0c},
265 {0x5790, 0x08},
266 {0x5791, 0x04},
267 {0x5792, 0x00},
268 {0x5793, 0x52},
269 {0x5794, 0xa3},
270 {0x5000, 0x3f},
271 {0x3801, 0x00},
272 {0x3803, 0x00},
273 {0x3805, 0x0f},
274 {0x3807, 0xdf},
275 {0x3809, 0x10},
276 {0x380b, 0xde},
277 {0x3811, 0x00},
278 {0x3813, 0x01},
279};
280
281static const char * const ov9734_test_pattern_menu[] = {
282 "Disabled",
283 "Standard Color Bar",
284 "Top-Bottom Darker Color Bar",
285 "Right-Left Darker Color Bar",
286 "Bottom-Top Darker Color Bar",
287};
288
289static const s64 link_freq_menu_items[] = {
290 OV9734_LINK_FREQ_180MHZ,
291};
292
293static const struct ov9734_link_freq_config link_freq_configs[] = {
294 [OV9734_LINK_FREQ_180MHZ_INDEX] = {
295 .reg_list = {
296 .num_of_regs = ARRAY_SIZE(mipi_data_rate_360mbps),
297 .regs = mipi_data_rate_360mbps,
298 }
299 },
300};
301
302static const struct ov9734_mode supported_modes[] = {
303 {
304 .width = 1296,
305 .height = 734,
306 .hts = 0x5c6,
307 .vts_def = OV9734_VTS_30FPS,
308 .vts_min = OV9734_VTS_30FPS_MIN,
309 .reg_list = {
310 .num_of_regs = ARRAY_SIZE(mode_1296x734_regs),
311 .regs = mode_1296x734_regs,
312 },
313 .link_freq_index = OV9734_LINK_FREQ_180MHZ_INDEX,
314 },
315};
316
317struct ov9734 {
318 struct v4l2_subdev sd;
319 struct media_pad pad;
320 struct v4l2_ctrl_handler ctrl_handler;
321
322
323 struct v4l2_ctrl *link_freq;
324 struct v4l2_ctrl *pixel_rate;
325 struct v4l2_ctrl *vblank;
326 struct v4l2_ctrl *hblank;
327 struct v4l2_ctrl *exposure;
328
329
330 const struct ov9734_mode *cur_mode;
331
332
333 struct mutex mutex;
334
335
336 bool streaming;
337};
338
339static inline struct ov9734 *to_ov9734(struct v4l2_subdev *subdev)
340{
341 return container_of(subdev, struct ov9734, sd);
342}
343
344static u64 to_pixel_rate(u32 f_index)
345{
346 u64 pixel_rate = link_freq_menu_items[f_index] * 2 * OV9734_DATA_LANES;
347
348 do_div(pixel_rate, OV9734_RGB_DEPTH);
349
350 return pixel_rate;
351}
352
353static u64 to_pixels_per_line(u32 hts, u32 f_index)
354{
355 u64 ppl = hts * to_pixel_rate(f_index);
356
357 do_div(ppl, OV9734_SCLK);
358
359 return ppl;
360}
361
362static int ov9734_read_reg(struct ov9734 *ov9734, u16 reg, u16 len, u32 *val)
363{
364 struct i2c_client *client = v4l2_get_subdevdata(&ov9734->sd);
365 struct i2c_msg msgs[2];
366 u8 addr_buf[2];
367 u8 data_buf[4] = {0};
368 int ret;
369
370 if (len > sizeof(data_buf))
371 return -EINVAL;
372
373 put_unaligned_be16(reg, addr_buf);
374 msgs[0].addr = client->addr;
375 msgs[0].flags = 0;
376 msgs[0].len = sizeof(addr_buf);
377 msgs[0].buf = addr_buf;
378 msgs[1].addr = client->addr;
379 msgs[1].flags = I2C_M_RD;
380 msgs[1].len = len;
381 msgs[1].buf = &data_buf[sizeof(data_buf) - len];
382
383 ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
384 if (ret != ARRAY_SIZE(msgs))
385 return ret < 0 ? ret : -EIO;
386
387 *val = get_unaligned_be32(data_buf);
388
389 return 0;
390}
391
392static int ov9734_write_reg(struct ov9734 *ov9734, u16 reg, u16 len, u32 val)
393{
394 struct i2c_client *client = v4l2_get_subdevdata(&ov9734->sd);
395 u8 buf[6];
396 int ret = 0;
397
398 if (len > 4)
399 return -EINVAL;
400
401 put_unaligned_be16(reg, buf);
402 put_unaligned_be32(val << 8 * (4 - len), buf + 2);
403
404 ret = i2c_master_send(client, buf, len + 2);
405 if (ret != len + 2)
406 return ret < 0 ? ret : -EIO;
407
408 return 0;
409}
410
411static int ov9734_write_reg_list(struct ov9734 *ov9734,
412 const struct ov9734_reg_list *r_list)
413{
414 struct i2c_client *client = v4l2_get_subdevdata(&ov9734->sd);
415 unsigned int i;
416 int ret;
417
418 for (i = 0; i < r_list->num_of_regs; i++) {
419 ret = ov9734_write_reg(ov9734, r_list->regs[i].address, 1,
420 r_list->regs[i].val);
421 if (ret) {
422 dev_err_ratelimited(&client->dev,
423 "write reg 0x%4.4x return err = %d",
424 r_list->regs[i].address, ret);
425 return ret;
426 }
427 }
428
429 return 0;
430}
431
432static int ov9734_update_digital_gain(struct ov9734 *ov9734, u32 d_gain)
433{
434 int ret;
435
436 ret = ov9734_write_reg(ov9734, OV9734_REG_MWB_R_GAIN, 2, d_gain);
437 if (ret)
438 return ret;
439
440 ret = ov9734_write_reg(ov9734, OV9734_REG_MWB_G_GAIN, 2, d_gain);
441 if (ret)
442 return ret;
443
444 return ov9734_write_reg(ov9734, OV9734_REG_MWB_B_GAIN, 2, d_gain);
445}
446
447static int ov9734_test_pattern(struct ov9734 *ov9734, u32 pattern)
448{
449 if (pattern)
450 pattern = (pattern - 1) << OV9734_TEST_PATTERN_BAR_SHIFT |
451 OV9734_TEST_PATTERN_ENABLE;
452
453 return ov9734_write_reg(ov9734, OV9734_REG_TEST_PATTERN, 1, pattern);
454}
455
456static int ov9734_set_ctrl(struct v4l2_ctrl *ctrl)
457{
458 struct ov9734 *ov9734 = container_of(ctrl->handler,
459 struct ov9734, ctrl_handler);
460 struct i2c_client *client = v4l2_get_subdevdata(&ov9734->sd);
461 s64 exposure_max;
462 int ret = 0;
463
464
465 if (ctrl->id == V4L2_CID_VBLANK) {
466
467 exposure_max = ov9734->cur_mode->height + ctrl->val -
468 OV9734_EXPOSURE_MAX_MARGIN;
469 __v4l2_ctrl_modify_range(ov9734->exposure,
470 ov9734->exposure->minimum,
471 exposure_max, ov9734->exposure->step,
472 exposure_max);
473 }
474
475
476 if (!pm_runtime_get_if_in_use(&client->dev))
477 return 0;
478
479 switch (ctrl->id) {
480 case V4L2_CID_ANALOGUE_GAIN:
481 ret = ov9734_write_reg(ov9734, OV9734_REG_ANALOG_GAIN,
482 2, ctrl->val);
483 break;
484
485 case V4L2_CID_DIGITAL_GAIN:
486 ret = ov9734_update_digital_gain(ov9734, ctrl->val);
487 break;
488
489 case V4L2_CID_EXPOSURE:
490
491 ret = ov9734_write_reg(ov9734, OV9734_REG_EXPOSURE,
492 3, ctrl->val << 4);
493 break;
494
495 case V4L2_CID_VBLANK:
496 ret = ov9734_write_reg(ov9734, OV9734_REG_VTS, 2,
497 ov9734->cur_mode->height + ctrl->val);
498 break;
499
500 case V4L2_CID_TEST_PATTERN:
501 ret = ov9734_test_pattern(ov9734, ctrl->val);
502 break;
503
504 default:
505 ret = -EINVAL;
506 break;
507 }
508
509 pm_runtime_put(&client->dev);
510
511 return ret;
512}
513
514static const struct v4l2_ctrl_ops ov9734_ctrl_ops = {
515 .s_ctrl = ov9734_set_ctrl,
516};
517
518static int ov9734_init_controls(struct ov9734 *ov9734)
519{
520 struct v4l2_ctrl_handler *ctrl_hdlr;
521 const struct ov9734_mode *cur_mode;
522 s64 exposure_max, h_blank, pixel_rate;
523 u32 vblank_min, vblank_max, vblank_default;
524 int ret, size;
525
526 ctrl_hdlr = &ov9734->ctrl_handler;
527 ret = v4l2_ctrl_handler_init(ctrl_hdlr, 8);
528 if (ret)
529 return ret;
530
531 ctrl_hdlr->lock = &ov9734->mutex;
532 cur_mode = ov9734->cur_mode;
533 size = ARRAY_SIZE(link_freq_menu_items);
534 ov9734->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr, &ov9734_ctrl_ops,
535 V4L2_CID_LINK_FREQ,
536 size - 1, 0,
537 link_freq_menu_items);
538 if (ov9734->link_freq)
539 ov9734->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
540
541 pixel_rate = to_pixel_rate(OV9734_LINK_FREQ_180MHZ_INDEX);
542 ov9734->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &ov9734_ctrl_ops,
543 V4L2_CID_PIXEL_RATE, 0,
544 pixel_rate, 1, pixel_rate);
545 vblank_min = cur_mode->vts_min - cur_mode->height;
546 vblank_max = OV9734_VTS_MAX - cur_mode->height;
547 vblank_default = cur_mode->vts_def - cur_mode->height;
548 ov9734->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov9734_ctrl_ops,
549 V4L2_CID_VBLANK, vblank_min,
550 vblank_max, 1, vblank_default);
551 h_blank = to_pixels_per_line(cur_mode->hts, cur_mode->link_freq_index);
552 h_blank -= cur_mode->width;
553 ov9734->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov9734_ctrl_ops,
554 V4L2_CID_HBLANK, h_blank, h_blank, 1,
555 h_blank);
556 if (ov9734->hblank)
557 ov9734->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
558
559 v4l2_ctrl_new_std(ctrl_hdlr, &ov9734_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
560 OV9734_ANAL_GAIN_MIN, OV9734_ANAL_GAIN_MAX,
561 OV9734_ANAL_GAIN_STEP, OV9734_ANAL_GAIN_MIN);
562 v4l2_ctrl_new_std(ctrl_hdlr, &ov9734_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
563 OV9734_DGTL_GAIN_MIN, OV9734_DGTL_GAIN_MAX,
564 OV9734_DGTL_GAIN_STEP, OV9734_DGTL_GAIN_DEFAULT);
565 exposure_max = ov9734->cur_mode->vts_def - OV9734_EXPOSURE_MAX_MARGIN;
566 ov9734->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &ov9734_ctrl_ops,
567 V4L2_CID_EXPOSURE,
568 OV9734_EXPOSURE_MIN, exposure_max,
569 OV9734_EXPOSURE_STEP,
570 exposure_max);
571 v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &ov9734_ctrl_ops,
572 V4L2_CID_TEST_PATTERN,
573 ARRAY_SIZE(ov9734_test_pattern_menu) - 1,
574 0, 0, ov9734_test_pattern_menu);
575 if (ctrl_hdlr->error)
576 return ctrl_hdlr->error;
577
578 ov9734->sd.ctrl_handler = ctrl_hdlr;
579
580 return 0;
581}
582
583static void ov9734_update_pad_format(const struct ov9734_mode *mode,
584 struct v4l2_mbus_framefmt *fmt)
585{
586 fmt->width = mode->width;
587 fmt->height = mode->height;
588 fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
589 fmt->field = V4L2_FIELD_NONE;
590}
591
592static int ov9734_start_streaming(struct ov9734 *ov9734)
593{
594 struct i2c_client *client = v4l2_get_subdevdata(&ov9734->sd);
595 const struct ov9734_reg_list *reg_list;
596 int link_freq_index, ret;
597
598 link_freq_index = ov9734->cur_mode->link_freq_index;
599 reg_list = &link_freq_configs[link_freq_index].reg_list;
600 ret = ov9734_write_reg_list(ov9734, reg_list);
601 if (ret) {
602 dev_err(&client->dev, "failed to set plls");
603 return ret;
604 }
605
606 reg_list = &ov9734->cur_mode->reg_list;
607 ret = ov9734_write_reg_list(ov9734, reg_list);
608 if (ret) {
609 dev_err(&client->dev, "failed to set mode");
610 return ret;
611 }
612
613 ret = __v4l2_ctrl_handler_setup(ov9734->sd.ctrl_handler);
614 if (ret)
615 return ret;
616
617 ret = ov9734_write_reg(ov9734, OV9734_REG_MODE_SELECT,
618 1, OV9734_MODE_STREAMING);
619 if (ret)
620 dev_err(&client->dev, "failed to start stream");
621
622 return ret;
623}
624
625static void ov9734_stop_streaming(struct ov9734 *ov9734)
626{
627 struct i2c_client *client = v4l2_get_subdevdata(&ov9734->sd);
628
629 if (ov9734_write_reg(ov9734, OV9734_REG_MODE_SELECT,
630 1, OV9734_MODE_STANDBY))
631 dev_err(&client->dev, "failed to stop stream");
632}
633
634static int ov9734_set_stream(struct v4l2_subdev *sd, int enable)
635{
636 struct ov9734 *ov9734 = to_ov9734(sd);
637 struct i2c_client *client = v4l2_get_subdevdata(sd);
638 int ret = 0;
639
640 mutex_lock(&ov9734->mutex);
641 if (ov9734->streaming == enable) {
642 mutex_unlock(&ov9734->mutex);
643 return 0;
644 }
645
646 if (enable) {
647 ret = pm_runtime_get_sync(&client->dev);
648 if (ret < 0) {
649 pm_runtime_put_noidle(&client->dev);
650 mutex_unlock(&ov9734->mutex);
651 return ret;
652 }
653
654 ret = ov9734_start_streaming(ov9734);
655 if (ret) {
656 enable = 0;
657 ov9734_stop_streaming(ov9734);
658 pm_runtime_put(&client->dev);
659 }
660 } else {
661 ov9734_stop_streaming(ov9734);
662 pm_runtime_put(&client->dev);
663 }
664
665 ov9734->streaming = enable;
666 mutex_unlock(&ov9734->mutex);
667
668 return ret;
669}
670
671static int __maybe_unused ov9734_suspend(struct device *dev)
672{
673 struct i2c_client *client = to_i2c_client(dev);
674 struct v4l2_subdev *sd = i2c_get_clientdata(client);
675 struct ov9734 *ov9734 = to_ov9734(sd);
676
677 mutex_lock(&ov9734->mutex);
678 if (ov9734->streaming)
679 ov9734_stop_streaming(ov9734);
680
681 mutex_unlock(&ov9734->mutex);
682
683 return 0;
684}
685
686static int __maybe_unused ov9734_resume(struct device *dev)
687{
688 struct i2c_client *client = to_i2c_client(dev);
689 struct v4l2_subdev *sd = i2c_get_clientdata(client);
690 struct ov9734 *ov9734 = to_ov9734(sd);
691 int ret = 0;
692
693 mutex_lock(&ov9734->mutex);
694 if (!ov9734->streaming)
695 goto exit;
696
697 ret = ov9734_start_streaming(ov9734);
698 if (ret) {
699 ov9734->streaming = false;
700 ov9734_stop_streaming(ov9734);
701 }
702
703exit:
704 mutex_unlock(&ov9734->mutex);
705 return ret;
706}
707
708static int ov9734_set_format(struct v4l2_subdev *sd,
709 struct v4l2_subdev_pad_config *cfg,
710 struct v4l2_subdev_format *fmt)
711{
712 struct ov9734 *ov9734 = to_ov9734(sd);
713 const struct ov9734_mode *mode;
714 s32 vblank_def, h_blank;
715
716 mode = v4l2_find_nearest_size(supported_modes,
717 ARRAY_SIZE(supported_modes), width,
718 height, fmt->format.width,
719 fmt->format.height);
720
721 mutex_lock(&ov9734->mutex);
722 ov9734_update_pad_format(mode, &fmt->format);
723 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
724 *v4l2_subdev_get_try_format(sd, cfg, fmt->pad) = fmt->format;
725 } else {
726 ov9734->cur_mode = mode;
727 __v4l2_ctrl_s_ctrl(ov9734->link_freq, mode->link_freq_index);
728 __v4l2_ctrl_s_ctrl_int64(ov9734->pixel_rate,
729 to_pixel_rate(mode->link_freq_index));
730
731
732 vblank_def = mode->vts_def - mode->height;
733 __v4l2_ctrl_modify_range(ov9734->vblank,
734 mode->vts_min - mode->height,
735 OV9734_VTS_MAX - mode->height, 1,
736 vblank_def);
737 __v4l2_ctrl_s_ctrl(ov9734->vblank, vblank_def);
738 h_blank = to_pixels_per_line(mode->hts, mode->link_freq_index) -
739 mode->width;
740 __v4l2_ctrl_modify_range(ov9734->hblank, h_blank, h_blank, 1,
741 h_blank);
742 }
743
744 mutex_unlock(&ov9734->mutex);
745
746 return 0;
747}
748
749static int ov9734_get_format(struct v4l2_subdev *sd,
750 struct v4l2_subdev_pad_config *cfg,
751 struct v4l2_subdev_format *fmt)
752{
753 struct ov9734 *ov9734 = to_ov9734(sd);
754
755 mutex_lock(&ov9734->mutex);
756 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY)
757 fmt->format = *v4l2_subdev_get_try_format(&ov9734->sd, cfg,
758 fmt->pad);
759 else
760 ov9734_update_pad_format(ov9734->cur_mode, &fmt->format);
761
762 mutex_unlock(&ov9734->mutex);
763
764 return 0;
765}
766
767static int ov9734_enum_mbus_code(struct v4l2_subdev *sd,
768 struct v4l2_subdev_pad_config *cfg,
769 struct v4l2_subdev_mbus_code_enum *code)
770{
771 if (code->index > 0)
772 return -EINVAL;
773
774 code->code = MEDIA_BUS_FMT_SGRBG10_1X10;
775
776 return 0;
777}
778
779static int ov9734_enum_frame_size(struct v4l2_subdev *sd,
780 struct v4l2_subdev_pad_config *cfg,
781 struct v4l2_subdev_frame_size_enum *fse)
782{
783 if (fse->index >= ARRAY_SIZE(supported_modes))
784 return -EINVAL;
785
786 if (fse->code != MEDIA_BUS_FMT_SGRBG10_1X10)
787 return -EINVAL;
788
789 fse->min_width = supported_modes[fse->index].width;
790 fse->max_width = fse->min_width;
791 fse->min_height = supported_modes[fse->index].height;
792 fse->max_height = fse->min_height;
793
794 return 0;
795}
796
797static int ov9734_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
798{
799 struct ov9734 *ov9734 = to_ov9734(sd);
800
801 mutex_lock(&ov9734->mutex);
802 ov9734_update_pad_format(&supported_modes[0],
803 v4l2_subdev_get_try_format(sd, fh->pad, 0));
804 mutex_unlock(&ov9734->mutex);
805
806 return 0;
807}
808
809static const struct v4l2_subdev_video_ops ov9734_video_ops = {
810 .s_stream = ov9734_set_stream,
811};
812
813static const struct v4l2_subdev_pad_ops ov9734_pad_ops = {
814 .set_fmt = ov9734_set_format,
815 .get_fmt = ov9734_get_format,
816 .enum_mbus_code = ov9734_enum_mbus_code,
817 .enum_frame_size = ov9734_enum_frame_size,
818};
819
820static const struct v4l2_subdev_ops ov9734_subdev_ops = {
821 .video = &ov9734_video_ops,
822 .pad = &ov9734_pad_ops,
823};
824
825static const struct media_entity_operations ov9734_subdev_entity_ops = {
826 .link_validate = v4l2_subdev_link_validate,
827};
828
829static const struct v4l2_subdev_internal_ops ov9734_internal_ops = {
830 .open = ov9734_open,
831};
832
833static int ov9734_identify_module(struct ov9734 *ov9734)
834{
835 struct i2c_client *client = v4l2_get_subdevdata(&ov9734->sd);
836 int ret;
837 u32 val;
838
839 ret = ov9734_read_reg(ov9734, OV9734_REG_CHIP_ID, 2, &val);
840 if (ret)
841 return ret;
842
843 if (val != OV9734_CHIP_ID) {
844 dev_err(&client->dev, "chip id mismatch: %x!=%x",
845 OV9734_CHIP_ID, val);
846 return -ENXIO;
847 }
848
849 return 0;
850}
851
852static int ov9734_check_hwcfg(struct device *dev)
853{
854 struct fwnode_handle *ep;
855 struct fwnode_handle *fwnode = dev_fwnode(dev);
856 struct v4l2_fwnode_endpoint bus_cfg = {
857 .bus_type = V4L2_MBUS_CSI2_DPHY
858 };
859 u32 mclk;
860 int ret;
861 unsigned int i, j;
862
863 if (!fwnode)
864 return -ENXIO;
865
866 ret = fwnode_property_read_u32(fwnode, "clock-frequency", &mclk);
867 if (ret)
868 return ret;
869
870 if (mclk != OV9734_MCLK) {
871 dev_err(dev, "external clock %d is not supported", mclk);
872 return -EINVAL;
873 }
874
875 ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
876 if (!ep)
877 return -ENXIO;
878
879 ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
880 fwnode_handle_put(ep);
881 if (ret)
882 return ret;
883
884 if (!bus_cfg.nr_of_link_frequencies) {
885 dev_err(dev, "no link frequencies defined");
886 ret = -EINVAL;
887 goto check_hwcfg_error;
888 }
889
890 for (i = 0; i < ARRAY_SIZE(link_freq_menu_items); i++) {
891 for (j = 0; j < bus_cfg.nr_of_link_frequencies; j++) {
892 if (link_freq_menu_items[i] ==
893 bus_cfg.link_frequencies[j])
894 break;
895 }
896
897 if (j == bus_cfg.nr_of_link_frequencies) {
898 dev_err(dev, "no link frequency %lld supported",
899 link_freq_menu_items[i]);
900 ret = -EINVAL;
901 goto check_hwcfg_error;
902 }
903 }
904
905check_hwcfg_error:
906 v4l2_fwnode_endpoint_free(&bus_cfg);
907
908 return ret;
909}
910
911static int ov9734_remove(struct i2c_client *client)
912{
913 struct v4l2_subdev *sd = i2c_get_clientdata(client);
914 struct ov9734 *ov9734 = to_ov9734(sd);
915
916 v4l2_async_unregister_subdev(sd);
917 media_entity_cleanup(&sd->entity);
918 v4l2_ctrl_handler_free(sd->ctrl_handler);
919 pm_runtime_disable(&client->dev);
920 mutex_destroy(&ov9734->mutex);
921
922 return 0;
923}
924
925static int ov9734_probe(struct i2c_client *client)
926{
927 struct ov9734 *ov9734;
928 int ret;
929
930 ret = ov9734_check_hwcfg(&client->dev);
931 if (ret) {
932 dev_err(&client->dev, "failed to check HW configuration: %d",
933 ret);
934 return ret;
935 }
936
937 ov9734 = devm_kzalloc(&client->dev, sizeof(*ov9734), GFP_KERNEL);
938 if (!ov9734)
939 return -ENOMEM;
940
941 v4l2_i2c_subdev_init(&ov9734->sd, client, &ov9734_subdev_ops);
942 ret = ov9734_identify_module(ov9734);
943 if (ret) {
944 dev_err(&client->dev, "failed to find sensor: %d", ret);
945 return ret;
946 }
947
948 mutex_init(&ov9734->mutex);
949 ov9734->cur_mode = &supported_modes[0];
950 ret = ov9734_init_controls(ov9734);
951 if (ret) {
952 dev_err(&client->dev, "failed to init controls: %d", ret);
953 goto probe_error_v4l2_ctrl_handler_free;
954 }
955
956 ov9734->sd.internal_ops = &ov9734_internal_ops;
957 ov9734->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
958 ov9734->sd.entity.ops = &ov9734_subdev_entity_ops;
959 ov9734->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
960 ov9734->pad.flags = MEDIA_PAD_FL_SOURCE;
961 ret = media_entity_pads_init(&ov9734->sd.entity, 1, &ov9734->pad);
962 if (ret) {
963 dev_err(&client->dev, "failed to init entity pads: %d", ret);
964 goto probe_error_v4l2_ctrl_handler_free;
965 }
966
967 ret = v4l2_async_register_subdev_sensor_common(&ov9734->sd);
968 if (ret < 0) {
969 dev_err(&client->dev, "failed to register V4L2 subdev: %d",
970 ret);
971 goto probe_error_media_entity_cleanup;
972 }
973
974
975
976
977
978 pm_runtime_set_active(&client->dev);
979 pm_runtime_enable(&client->dev);
980 pm_runtime_idle(&client->dev);
981
982 return 0;
983
984probe_error_media_entity_cleanup:
985 media_entity_cleanup(&ov9734->sd.entity);
986
987probe_error_v4l2_ctrl_handler_free:
988 v4l2_ctrl_handler_free(ov9734->sd.ctrl_handler);
989 mutex_destroy(&ov9734->mutex);
990
991 return ret;
992}
993
994static const struct dev_pm_ops ov9734_pm_ops = {
995 SET_SYSTEM_SLEEP_PM_OPS(ov9734_suspend, ov9734_resume)
996};
997
998static const struct acpi_device_id ov9734_acpi_ids[] = {
999 { "OVTI9734", },
1000 {}
1001};
1002
1003MODULE_DEVICE_TABLE(acpi, ov9734_acpi_ids);
1004
1005static struct i2c_driver ov9734_i2c_driver = {
1006 .driver = {
1007 .name = "ov9734",
1008 .pm = &ov9734_pm_ops,
1009 .acpi_match_table = ov9734_acpi_ids,
1010 },
1011 .probe_new = ov9734_probe,
1012 .remove = ov9734_remove,
1013};
1014
1015module_i2c_driver(ov9734_i2c_driver);
1016
1017MODULE_AUTHOR("Qiu, Tianshu <tian.shu.qiu@intel.com>");
1018MODULE_AUTHOR("Bingbu Cao <bingbu.cao@intel.com>");
1019MODULE_DESCRIPTION("OmniVision OV9734 sensor driver");
1020MODULE_LICENSE("GPL v2");
1021
