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Merge tag 'regmap-fix-v5.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux/fpc-iii.git] / drivers / media / i2c / s5c73m3 / s5c73m3-core.c
blob5b4c4a3547c93669e4c63d632b0f0187346a3704
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Samsung LSI S5C73M3 8M pixel camera driver
4 *
5 * Copyright (C) 2012, Samsung Electronics, Co., Ltd.
6 * Sylwester Nawrocki <s.nawrocki@samsung.com>
7 * Andrzej Hajda <a.hajda@samsung.com>
8 */
9
10 #include <linux/clk.h>
11 #include <linux/delay.h>
12 #include <linux/firmware.h>
13 #include <linux/gpio.h>
14 #include <linux/i2c.h>
15 #include <linux/init.h>
16 #include <linux/media.h>
17 #include <linux/module.h>
18 #include <linux/of_gpio.h>
19 #include <linux/of_graph.h>
20 #include <linux/regulator/consumer.h>
21 #include <linux/sizes.h>
22 #include <linux/slab.h>
23 #include <linux/spi/spi.h>
24 #include <linux/videodev2.h>
25 #include <media/media-entity.h>
26 #include <media/v4l2-ctrls.h>
27 #include <media/v4l2-device.h>
28 #include <media/v4l2-subdev.h>
29 #include <media/v4l2-mediabus.h>
30 #include <media/i2c/s5c73m3.h>
31 #include <media/v4l2-fwnode.h>
32
33 #include "s5c73m3.h"
34
35 int s5c73m3_dbg;
36 module_param_named(debug, s5c73m3_dbg, int, 0644);
37
38 static int boot_from_rom = 1;
39 module_param(boot_from_rom, int, 0644);
40
41 static int update_fw;
42 module_param(update_fw, int, 0644);
43
44 #define S5C73M3_EMBEDDED_DATA_MAXLEN SZ_4K
45 #define S5C73M3_MIPI_DATA_LANES 4
46 #define S5C73M3_CLK_NAME "cis_extclk"
47
48 static const char * const s5c73m3_supply_names[S5C73M3_MAX_SUPPLIES] = {
49 "vdd-int", /* Digital Core supply (1.2V), CAM_ISP_CORE_1.2V */
50 "vdda", /* Analog Core supply (1.2V), CAM_SENSOR_CORE_1.2V */
51 "vdd-reg", /* Regulator input supply (2.8V), CAM_SENSOR_A2.8V */
52 "vddio-host", /* Digital Host I/O power supply (1.8V...2.8V),
53 CAM_ISP_SENSOR_1.8V */
54 "vddio-cis", /* Digital CIS I/O power (1.2V...1.8V),
55 CAM_ISP_MIPI_1.2V */
56 "vdd-af", /* Lens, CAM_AF_2.8V */
57 };
58
59 static const struct s5c73m3_frame_size s5c73m3_isp_resolutions[] = {
60 { 320, 240, COMM_CHG_MODE_YUV_320_240 },
61 { 352, 288, COMM_CHG_MODE_YUV_352_288 },
62 { 640, 480, COMM_CHG_MODE_YUV_640_480 },
63 { 880, 720, COMM_CHG_MODE_YUV_880_720 },
64 { 960, 720, COMM_CHG_MODE_YUV_960_720 },
65 { 1008, 672, COMM_CHG_MODE_YUV_1008_672 },
66 { 1184, 666, COMM_CHG_MODE_YUV_1184_666 },
67 { 1280, 720, COMM_CHG_MODE_YUV_1280_720 },
68 { 1536, 864, COMM_CHG_MODE_YUV_1536_864 },
69 { 1600, 1200, COMM_CHG_MODE_YUV_1600_1200 },
70 { 1632, 1224, COMM_CHG_MODE_YUV_1632_1224 },
71 { 1920, 1080, COMM_CHG_MODE_YUV_1920_1080 },
72 { 1920, 1440, COMM_CHG_MODE_YUV_1920_1440 },
73 { 2304, 1296, COMM_CHG_MODE_YUV_2304_1296 },
74 { 3264, 2448, COMM_CHG_MODE_YUV_3264_2448 },
75 };
76
77 static const struct s5c73m3_frame_size s5c73m3_jpeg_resolutions[] = {
78 { 640, 480, COMM_CHG_MODE_JPEG_640_480 },
79 { 800, 450, COMM_CHG_MODE_JPEG_800_450 },
80 { 800, 600, COMM_CHG_MODE_JPEG_800_600 },
81 { 1024, 768, COMM_CHG_MODE_JPEG_1024_768 },
82 { 1280, 720, COMM_CHG_MODE_JPEG_1280_720 },
83 { 1280, 960, COMM_CHG_MODE_JPEG_1280_960 },
84 { 1600, 900, COMM_CHG_MODE_JPEG_1600_900 },
85 { 1600, 1200, COMM_CHG_MODE_JPEG_1600_1200 },
86 { 2048, 1152, COMM_CHG_MODE_JPEG_2048_1152 },
87 { 2048, 1536, COMM_CHG_MODE_JPEG_2048_1536 },
88 { 2560, 1440, COMM_CHG_MODE_JPEG_2560_1440 },
89 { 2560, 1920, COMM_CHG_MODE_JPEG_2560_1920 },
90 { 3264, 1836, COMM_CHG_MODE_JPEG_3264_1836 },
91 { 3264, 2176, COMM_CHG_MODE_JPEG_3264_2176 },
92 { 3264, 2448, COMM_CHG_MODE_JPEG_3264_2448 },
93 };
94
95 static const struct s5c73m3_frame_size * const s5c73m3_resolutions[] = {
96 [RES_ISP] = s5c73m3_isp_resolutions,
97 [RES_JPEG] = s5c73m3_jpeg_resolutions
98 };
99
100 static const int s5c73m3_resolutions_len[] = {
101 [RES_ISP] = ARRAY_SIZE(s5c73m3_isp_resolutions),
102 [RES_JPEG] = ARRAY_SIZE(s5c73m3_jpeg_resolutions)
103 };
104
105 static const struct s5c73m3_interval s5c73m3_intervals[] = {
106 { COMM_FRAME_RATE_FIXED_7FPS, {142857, 1000000}, {3264, 2448} },
107 { COMM_FRAME_RATE_FIXED_15FPS, {66667, 1000000}, {3264, 2448} },
108 { COMM_FRAME_RATE_FIXED_20FPS, {50000, 1000000}, {2304, 1296} },
109 { COMM_FRAME_RATE_FIXED_30FPS, {33333, 1000000}, {2304, 1296} },
110 };
111
112 #define S5C73M3_DEFAULT_FRAME_INTERVAL 3 /* 30 fps */
113
114 static void s5c73m3_fill_mbus_fmt(struct v4l2_mbus_framefmt *mf,
115 const struct s5c73m3_frame_size *fs,
116 u32 code)
117 {
118 mf->width = fs->width;
119 mf->height = fs->height;
120 mf->code = code;
121 mf->colorspace = V4L2_COLORSPACE_JPEG;
122 mf->field = V4L2_FIELD_NONE;
123 }
124
125 static int s5c73m3_i2c_write(struct i2c_client *client, u16 addr, u16 data)
126 {
127 u8 buf[4] = { addr >> 8, addr & 0xff, data >> 8, data & 0xff };
128
129 int ret = i2c_master_send(client, buf, sizeof(buf));
130
131 v4l_dbg(4, s5c73m3_dbg, client, "%s: addr 0x%04x, data 0x%04x\n",
132 __func__, addr, data);
133
134 if (ret == 4)
135 return 0;
136
137 return ret < 0 ? ret : -EREMOTEIO;
138 }
139
140 static int s5c73m3_i2c_read(struct i2c_client *client, u16 addr, u16 *data)
141 {
142 int ret;
143 u8 rbuf[2], wbuf[2] = { addr >> 8, addr & 0xff };
144 struct i2c_msg msg[2] = {
145 {
146 .addr = client->addr,
147 .flags = 0,
148 .len = sizeof(wbuf),
149 .buf = wbuf
150 }, {
151 .addr = client->addr,
152 .flags = I2C_M_RD,
153 .len = sizeof(rbuf),
154 .buf = rbuf
155 }
156 };
157 /*
158 * Issue repeated START after writing 2 address bytes and
159 * just one STOP only after reading the data bytes.
160 */
161 ret = i2c_transfer(client->adapter, msg, 2);
162 if (ret == 2) {
163 *data = be16_to_cpup((__be16 *)rbuf);
164 v4l2_dbg(4, s5c73m3_dbg, client,
165 "%s: addr: 0x%04x, data: 0x%04x\n",
166 __func__, addr, *data);
167 return 0;
168 }
169
170 v4l2_err(client, "I2C read failed: addr: %04x, (%d)\n", addr, ret);
171
172 return ret >= 0 ? -EREMOTEIO : ret;
173 }
174
175 int s5c73m3_write(struct s5c73m3 *state, u32 addr, u16 data)
176 {
177 struct i2c_client *client = state->i2c_client;
178 int ret;
179
180 if ((addr ^ state->i2c_write_address) & 0xffff0000) {
181 ret = s5c73m3_i2c_write(client, REG_CMDWR_ADDRH, addr >> 16);
182 if (ret < 0) {
183 state->i2c_write_address = 0;
184 return ret;
185 }
186 }
187
188 if ((addr ^ state->i2c_write_address) & 0xffff) {
189 ret = s5c73m3_i2c_write(client, REG_CMDWR_ADDRL, addr & 0xffff);
190 if (ret < 0) {
191 state->i2c_write_address = 0;
192 return ret;
193 }
194 }
195
196 state->i2c_write_address = addr;
197
198 ret = s5c73m3_i2c_write(client, REG_CMDBUF_ADDR, data);
199 if (ret < 0)
200 return ret;
201
202 state->i2c_write_address += 2;
203
204 return ret;
205 }
206
207 int s5c73m3_read(struct s5c73m3 *state, u32 addr, u16 *data)
208 {
209 struct i2c_client *client = state->i2c_client;
210 int ret;
211
212 if ((addr ^ state->i2c_read_address) & 0xffff0000) {
213 ret = s5c73m3_i2c_write(client, REG_CMDRD_ADDRH, addr >> 16);
214 if (ret < 0) {
215 state->i2c_read_address = 0;
216 return ret;
217 }
218 }
219
220 if ((addr ^ state->i2c_read_address) & 0xffff) {
221 ret = s5c73m3_i2c_write(client, REG_CMDRD_ADDRL, addr & 0xffff);
222 if (ret < 0) {
223 state->i2c_read_address = 0;
224 return ret;
225 }
226 }
227
228 state->i2c_read_address = addr;
229
230 ret = s5c73m3_i2c_read(client, REG_CMDBUF_ADDR, data);
231 if (ret < 0)
232 return ret;
233
234 state->i2c_read_address += 2;
235
236 return ret;
237 }
238
239 static int s5c73m3_check_status(struct s5c73m3 *state, unsigned int value)
240 {
241 unsigned long start = jiffies;
242 unsigned long end = start + msecs_to_jiffies(2000);
243 int ret;
244 u16 status;
245 int count = 0;
246
247 do {
248 ret = s5c73m3_read(state, REG_STATUS, &status);
249 if (ret < 0 || status == value)
250 break;
251 usleep_range(500, 1000);
252 ++count;
253 } while (time_is_after_jiffies(end));
254
255 if (count > 0)
256 v4l2_dbg(1, s5c73m3_dbg, &state->sensor_sd,
257 "status check took %dms\n",
258 jiffies_to_msecs(jiffies - start));
259
260 if (ret == 0 && status != value) {
261 u16 i2c_status = 0;
262 u16 i2c_seq_status = 0;
263
264 s5c73m3_read(state, REG_I2C_STATUS, &i2c_status);
265 s5c73m3_read(state, REG_I2C_SEQ_STATUS, &i2c_seq_status);
266
267 v4l2_err(&state->sensor_sd,
268 "wrong status %#x, expected: %#x, i2c_status: %#x/%#x\n",
269 status, value, i2c_status, i2c_seq_status);
270
271 return -ETIMEDOUT;
272 }
273
274 return ret;
275 }
276
277 int s5c73m3_isp_command(struct s5c73m3 *state, u16 command, u16 data)
278 {
279 int ret;
280
281 ret = s5c73m3_check_status(state, REG_STATUS_ISP_COMMAND_COMPLETED);
282 if (ret < 0)
283 return ret;
284
285 ret = s5c73m3_write(state, 0x00095000, command);
286 if (ret < 0)
287 return ret;
288
289 ret = s5c73m3_write(state, 0x00095002, data);
290 if (ret < 0)
291 return ret;
292
293 return s5c73m3_write(state, REG_STATUS, 0x0001);
294 }
295
296 static int s5c73m3_isp_comm_result(struct s5c73m3 *state, u16 command,
297 u16 *data)
298 {
299 return s5c73m3_read(state, COMM_RESULT_OFFSET + command, data);
300 }
301
302 static int s5c73m3_set_af_softlanding(struct s5c73m3 *state)
303 {
304 unsigned long start = jiffies;
305 u16 af_softlanding;
306 int count = 0;
307 int ret;
308 const char *msg;
309
310 ret = s5c73m3_isp_command(state, COMM_AF_SOFTLANDING,
311 COMM_AF_SOFTLANDING_ON);
312 if (ret < 0) {
313 v4l2_info(&state->sensor_sd, "AF soft-landing failed\n");
314 return ret;
315 }
316
317 for (;;) {
318 ret = s5c73m3_isp_comm_result(state, COMM_AF_SOFTLANDING,
319 &af_softlanding);
320 if (ret < 0) {
321 msg = "failed";
322 break;
323 }
324 if (af_softlanding == COMM_AF_SOFTLANDING_RES_COMPLETE) {
325 msg = "succeeded";
326 break;
327 }
328 if (++count > 100) {
329 ret = -ETIME;
330 msg = "timed out";
331 break;
332 }
333 msleep(25);
334 }
335
336 v4l2_info(&state->sensor_sd, "AF soft-landing %s after %dms\n",
337 msg, jiffies_to_msecs(jiffies - start));
338
339 return ret;
340 }
341
342 static int s5c73m3_load_fw(struct v4l2_subdev *sd)
343 {
344 struct s5c73m3 *state = sensor_sd_to_s5c73m3(sd);
345 struct i2c_client *client = state->i2c_client;
346 const struct firmware *fw;
347 int ret;
348 char fw_name[20];
349
350 snprintf(fw_name, sizeof(fw_name), "SlimISP_%.2s.bin",
351 state->fw_file_version);
352 ret = request_firmware(&fw, fw_name, &client->dev);
353 if (ret < 0) {
354 v4l2_err(sd, "Firmware request failed (%s)\n", fw_name);
355 return -EINVAL;
356 }
357
358 v4l2_info(sd, "Loading firmware (%s, %zu B)\n", fw_name, fw->size);
359
360 ret = s5c73m3_spi_write(state, fw->data, fw->size, 64);
361
362 if (ret >= 0)
363 state->isp_ready = 1;
364 else
365 v4l2_err(sd, "SPI write failed\n");
366
367 release_firmware(fw);
368
369 return ret;
370 }
371
372 static int s5c73m3_set_frame_size(struct s5c73m3 *state)
373 {
374 const struct s5c73m3_frame_size *prev_size =
375 state->sensor_pix_size[RES_ISP];
376 const struct s5c73m3_frame_size *cap_size =
377 state->sensor_pix_size[RES_JPEG];
378 unsigned int chg_mode;
379
380 v4l2_dbg(1, s5c73m3_dbg, &state->sensor_sd,
381 "Preview size: %dx%d, reg_val: 0x%x\n",
382 prev_size->width, prev_size->height, prev_size->reg_val);
383
384 chg_mode = prev_size->reg_val | COMM_CHG_MODE_NEW;
385
386 if (state->mbus_code == S5C73M3_JPEG_FMT) {
387 v4l2_dbg(1, s5c73m3_dbg, &state->sensor_sd,
388 "Capture size: %dx%d, reg_val: 0x%x\n",
389 cap_size->width, cap_size->height, cap_size->reg_val);
390 chg_mode |= cap_size->reg_val;
391 }
392
393 return s5c73m3_isp_command(state, COMM_CHG_MODE, chg_mode);
394 }
395
396 static int s5c73m3_set_frame_rate(struct s5c73m3 *state)
397 {
398 int ret;
399
400 if (state->ctrls.stabilization->val)
401 return 0;
402
403 if (WARN_ON(state->fiv == NULL))
404 return -EINVAL;
405
406 ret = s5c73m3_isp_command(state, COMM_FRAME_RATE, state->fiv->fps_reg);
407 if (!ret)
408 state->apply_fiv = 0;
409
410 return ret;
411 }
412
413 static int __s5c73m3_s_stream(struct s5c73m3 *state, struct v4l2_subdev *sd,
414 int on)
415 {
416 u16 mode;
417 int ret;
418
419 if (on && state->apply_fmt) {
420 if (state->mbus_code == S5C73M3_JPEG_FMT)
421 mode = COMM_IMG_OUTPUT_INTERLEAVED;
422 else
423 mode = COMM_IMG_OUTPUT_YUV;
424
425 ret = s5c73m3_isp_command(state, COMM_IMG_OUTPUT, mode);
426 if (!ret)
427 ret = s5c73m3_set_frame_size(state);
428 if (ret)
429 return ret;
430 state->apply_fmt = 0;
431 }
432
433 ret = s5c73m3_isp_command(state, COMM_SENSOR_STREAMING, !!on);
434 if (ret)
435 return ret;
436
437 state->streaming = !!on;
438
439 if (!on)
440 return ret;
441
442 if (state->apply_fiv) {
443 ret = s5c73m3_set_frame_rate(state);
444 if (ret < 0)
445 v4l2_err(sd, "Error setting frame rate(%d)\n", ret);
446 }
447
448 return s5c73m3_check_status(state, REG_STATUS_ISP_COMMAND_COMPLETED);
449 }
450
451 static int s5c73m3_oif_s_stream(struct v4l2_subdev *sd, int on)
452 {
453 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
454 int ret;
455
456 mutex_lock(&state->lock);
457 ret = __s5c73m3_s_stream(state, sd, on);
458 mutex_unlock(&state->lock);
459
460 return ret;
461 }
462
463 static int s5c73m3_system_status_wait(struct s5c73m3 *state, u32 value,
464 unsigned int delay, unsigned int steps)
465 {
466 u16 reg = 0;
467
468 while (steps-- > 0) {
469 int ret = s5c73m3_read(state, 0x30100010, &reg);
470 if (ret < 0)
471 return ret;
472 if (reg == value)
473 return 0;
474 usleep_range(delay, delay + 25);
475 }
476 return -ETIMEDOUT;
477 }
478
479 static int s5c73m3_read_fw_version(struct s5c73m3 *state)
480 {
481 struct v4l2_subdev *sd = &state->sensor_sd;
482 int i, ret;
483 u16 data[2];
484 int offset;
485
486 offset = state->isp_ready ? 0x60 : 0;
487
488 for (i = 0; i < S5C73M3_SENSOR_FW_LEN / 2; i++) {
489 ret = s5c73m3_read(state, offset + i * 2, data);
490 if (ret < 0)
491 return ret;
492 state->sensor_fw[i * 2] = (char)(*data & 0xff);
493 state->sensor_fw[i * 2 + 1] = (char)(*data >> 8);
494 }
495 state->sensor_fw[S5C73M3_SENSOR_FW_LEN] = '\0';
496
497
498 for (i = 0; i < S5C73M3_SENSOR_TYPE_LEN / 2; i++) {
499 ret = s5c73m3_read(state, offset + 6 + i * 2, data);
500 if (ret < 0)
501 return ret;
502 state->sensor_type[i * 2] = (char)(*data & 0xff);
503 state->sensor_type[i * 2 + 1] = (char)(*data >> 8);
504 }
505 state->sensor_type[S5C73M3_SENSOR_TYPE_LEN] = '\0';
506
507 ret = s5c73m3_read(state, offset + 0x14, data);
508 if (ret >= 0) {
509 ret = s5c73m3_read(state, offset + 0x16, data + 1);
510 if (ret >= 0)
511 state->fw_size = data[0] + (data[1] << 16);
512 }
513
514 v4l2_info(sd, "Sensor type: %s, FW version: %s\n",
515 state->sensor_type, state->sensor_fw);
516 return ret;
517 }
518
519 static int s5c73m3_fw_update_from(struct s5c73m3 *state)
520 {
521 struct v4l2_subdev *sd = &state->sensor_sd;
522 u16 status = COMM_FW_UPDATE_NOT_READY;
523 int ret;
524 int count = 0;
525
526 v4l2_warn(sd, "Updating F-ROM firmware.\n");
527 do {
528 if (status == COMM_FW_UPDATE_NOT_READY) {
529 ret = s5c73m3_isp_command(state, COMM_FW_UPDATE, 0);
530 if (ret < 0)
531 return ret;
532 }
533
534 ret = s5c73m3_read(state, 0x00095906, &status);
535 if (ret < 0)
536 return ret;
537 switch (status) {
538 case COMM_FW_UPDATE_FAIL:
539 v4l2_warn(sd, "Updating F-ROM firmware failed.\n");
540 return -EIO;
541 case COMM_FW_UPDATE_SUCCESS:
542 v4l2_warn(sd, "Updating F-ROM firmware finished.\n");
543 return 0;
544 }
545 ++count;
546 msleep(20);
547 } while (count < 500);
548
549 v4l2_warn(sd, "Updating F-ROM firmware timed-out.\n");
550 return -ETIMEDOUT;
551 }
552
553 static int s5c73m3_spi_boot(struct s5c73m3 *state, bool load_fw)
554 {
555 struct v4l2_subdev *sd = &state->sensor_sd;
556 int ret;
557
558 /* Run ARM MCU */
559 ret = s5c73m3_write(state, 0x30000004, 0xffff);
560 if (ret < 0)
561 return ret;
562
563 usleep_range(400, 500);
564
565 /* Check booting status */
566 ret = s5c73m3_system_status_wait(state, 0x0c, 100, 3);
567 if (ret < 0) {
568 v4l2_err(sd, "booting failed: %d\n", ret);
569 return ret;
570 }
571
572 /* P,M,S and Boot Mode */
573 ret = s5c73m3_write(state, 0x30100014, 0x2146);
574 if (ret < 0)
575 return ret;
576
577 ret = s5c73m3_write(state, 0x30100010, 0x210c);
578 if (ret < 0)
579 return ret;
580
581 usleep_range(200, 250);
582
583 /* Check SPI status */
584 ret = s5c73m3_system_status_wait(state, 0x210d, 100, 300);
585 if (ret < 0)
586 v4l2_err(sd, "SPI not ready: %d\n", ret);
587
588 /* Firmware download over SPI */
589 if (load_fw)
590 s5c73m3_load_fw(sd);
591
592 /* MCU reset */
593 ret = s5c73m3_write(state, 0x30000004, 0xfffd);
594 if (ret < 0)
595 return ret;
596
597 /* Remap */
598 ret = s5c73m3_write(state, 0x301000a4, 0x0183);
599 if (ret < 0)
600 return ret;
601
602 /* MCU restart */
603 ret = s5c73m3_write(state, 0x30000004, 0xffff);
604 if (ret < 0 || !load_fw)
605 return ret;
606
607 ret = s5c73m3_read_fw_version(state);
608 if (ret < 0)
609 return ret;
610
611 if (load_fw && update_fw) {
612 ret = s5c73m3_fw_update_from(state);
613 update_fw = 0;
614 }
615
616 return ret;
617 }
618
619 static int s5c73m3_set_timing_register_for_vdd(struct s5c73m3 *state)
620 {
621 static const u32 regs[][2] = {
622 { 0x30100018, 0x0618 },
623 { 0x3010001c, 0x10c1 },
624 { 0x30100020, 0x249e }
625 };
626 int ret;
627 int i;
628
629 for (i = 0; i < ARRAY_SIZE(regs); i++) {
630 ret = s5c73m3_write(state, regs[i][0], regs[i][1]);
631 if (ret < 0)
632 return ret;
633 }
634
635 return 0;
636 }
637
638 static void s5c73m3_set_fw_file_version(struct s5c73m3 *state)
639 {
640 switch (state->sensor_fw[0]) {
641 case 'G':
642 case 'O':
643 state->fw_file_version[0] = 'G';
644 break;
645 case 'S':
646 case 'Z':
647 state->fw_file_version[0] = 'Z';
648 break;
649 }
650
651 switch (state->sensor_fw[1]) {
652 case 'C'...'F':
653 state->fw_file_version[1] = state->sensor_fw[1];
654 break;
655 }
656 }
657
658 static int s5c73m3_get_fw_version(struct s5c73m3 *state)
659 {
660 struct v4l2_subdev *sd = &state->sensor_sd;
661 int ret;
662
663 /* Run ARM MCU */
664 ret = s5c73m3_write(state, 0x30000004, 0xffff);
665 if (ret < 0)
666 return ret;
667 usleep_range(400, 500);
668
669 /* Check booting status */
670 ret = s5c73m3_system_status_wait(state, 0x0c, 100, 3);
671 if (ret < 0) {
672
673 v4l2_err(sd, "%s: booting failed: %d\n", __func__, ret);
674 return ret;
675 }
676
677 /* Change I/O Driver Current in order to read from F-ROM */
678 ret = s5c73m3_write(state, 0x30100120, 0x0820);
679 ret = s5c73m3_write(state, 0x30100124, 0x0820);
680
681 /* Offset Setting */
682 ret = s5c73m3_write(state, 0x00010418, 0x0008);
683
684 /* P,M,S and Boot Mode */
685 ret = s5c73m3_write(state, 0x30100014, 0x2146);
686 if (ret < 0)
687 return ret;
688 ret = s5c73m3_write(state, 0x30100010, 0x230c);
689 if (ret < 0)
690 return ret;
691
692 usleep_range(200, 250);
693
694 /* Check SPI status */
695 ret = s5c73m3_system_status_wait(state, 0x230e, 100, 300);
696 if (ret < 0)
697 v4l2_err(sd, "SPI not ready: %d\n", ret);
698
699 /* ARM reset */
700 ret = s5c73m3_write(state, 0x30000004, 0xfffd);
701 if (ret < 0)
702 return ret;
703
704 /* Remap */
705 ret = s5c73m3_write(state, 0x301000a4, 0x0183);
706 if (ret < 0)
707 return ret;
708
709 s5c73m3_set_timing_register_for_vdd(state);
710
711 ret = s5c73m3_read_fw_version(state);
712
713 s5c73m3_set_fw_file_version(state);
714
715 return ret;
716 }
717
718 static int s5c73m3_rom_boot(struct s5c73m3 *state, bool load_fw)
719 {
720 static const u32 boot_regs[][2] = {
721 { 0x3100010c, 0x0044 },
722 { 0x31000108, 0x000d },
723 { 0x31000304, 0x0001 },
724 { 0x00010000, 0x5800 },
725 { 0x00010002, 0x0002 },
726 { 0x31000000, 0x0001 },
727 { 0x30100014, 0x1b85 },
728 { 0x30100010, 0x230c }
729 };
730 struct v4l2_subdev *sd = &state->sensor_sd;
731 int i, ret;
732
733 /* Run ARM MCU */
734 ret = s5c73m3_write(state, 0x30000004, 0xffff);
735 if (ret < 0)
736 return ret;
737 usleep_range(400, 450);
738
739 /* Check booting status */
740 ret = s5c73m3_system_status_wait(state, 0x0c, 100, 4);
741 if (ret < 0) {
742 v4l2_err(sd, "Booting failed: %d\n", ret);
743 return ret;
744 }
745
746 for (i = 0; i < ARRAY_SIZE(boot_regs); i++) {
747 ret = s5c73m3_write(state, boot_regs[i][0], boot_regs[i][1]);
748 if (ret < 0)
749 return ret;
750 }
751 msleep(200);
752
753 /* Check the binary read status */
754 ret = s5c73m3_system_status_wait(state, 0x230e, 1000, 150);
755 if (ret < 0) {
756 v4l2_err(sd, "Binary read failed: %d\n", ret);
757 return ret;
758 }
759
760 /* ARM reset */
761 ret = s5c73m3_write(state, 0x30000004, 0xfffd);
762 if (ret < 0)
763 return ret;
764 /* Remap */
765 ret = s5c73m3_write(state, 0x301000a4, 0x0183);
766 if (ret < 0)
767 return ret;
768 /* MCU re-start */
769 ret = s5c73m3_write(state, 0x30000004, 0xffff);
770 if (ret < 0)
771 return ret;
772
773 state->isp_ready = 1;
774
775 return s5c73m3_read_fw_version(state);
776 }
777
778 static int s5c73m3_isp_init(struct s5c73m3 *state)
779 {
780 int ret;
781
782 state->i2c_read_address = 0;
783 state->i2c_write_address = 0;
784
785 ret = s5c73m3_i2c_write(state->i2c_client, AHB_MSB_ADDR_PTR, 0x3310);
786 if (ret < 0)
787 return ret;
788
789 if (boot_from_rom)
790 return s5c73m3_rom_boot(state, true);
791 else
792 return s5c73m3_spi_boot(state, true);
793 }
794
795 static const struct s5c73m3_frame_size *s5c73m3_find_frame_size(
796 struct v4l2_mbus_framefmt *fmt,
797 enum s5c73m3_resolution_types idx)
798 {
799 const struct s5c73m3_frame_size *fs;
800 const struct s5c73m3_frame_size *best_fs;
801 int best_dist = INT_MAX;
802 int i;
803
804 fs = s5c73m3_resolutions[idx];
805 best_fs = NULL;
806 for (i = 0; i < s5c73m3_resolutions_len[idx]; ++i) {
807 int dist = abs(fs->width - fmt->width) +
808 abs(fs->height - fmt->height);
809 if (dist < best_dist) {
810 best_dist = dist;
811 best_fs = fs;
812 }
813 ++fs;
814 }
815
816 return best_fs;
817 }
818
819 static void s5c73m3_oif_try_format(struct s5c73m3 *state,
820 struct v4l2_subdev_pad_config *cfg,
821 struct v4l2_subdev_format *fmt,
822 const struct s5c73m3_frame_size **fs)
823 {
824 struct v4l2_subdev *sd = &state->sensor_sd;
825 u32 code;
826
827 switch (fmt->pad) {
828 case OIF_ISP_PAD:
829 *fs = s5c73m3_find_frame_size(&fmt->format, RES_ISP);
830 code = S5C73M3_ISP_FMT;
831 break;
832 case OIF_JPEG_PAD:
833 *fs = s5c73m3_find_frame_size(&fmt->format, RES_JPEG);
834 code = S5C73M3_JPEG_FMT;
835 break;
836 case OIF_SOURCE_PAD:
837 default:
838 if (fmt->format.code == S5C73M3_JPEG_FMT)
839 code = S5C73M3_JPEG_FMT;
840 else
841 code = S5C73M3_ISP_FMT;
842
843 if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE)
844 *fs = state->oif_pix_size[RES_ISP];
845 else
846 *fs = s5c73m3_find_frame_size(
847 v4l2_subdev_get_try_format(sd, cfg,
848 OIF_ISP_PAD),
849 RES_ISP);
850 break;
851 }
852
853 s5c73m3_fill_mbus_fmt(&fmt->format, *fs, code);
854 }
855
856 static void s5c73m3_try_format(struct s5c73m3 *state,
857 struct v4l2_subdev_pad_config *cfg,
858 struct v4l2_subdev_format *fmt,
859 const struct s5c73m3_frame_size **fs)
860 {
861 u32 code;
862
863 if (fmt->pad == S5C73M3_ISP_PAD) {
864 *fs = s5c73m3_find_frame_size(&fmt->format, RES_ISP);
865 code = S5C73M3_ISP_FMT;
866 } else {
867 *fs = s5c73m3_find_frame_size(&fmt->format, RES_JPEG);
868 code = S5C73M3_JPEG_FMT;
869 }
870
871 s5c73m3_fill_mbus_fmt(&fmt->format, *fs, code);
872 }
873
874 static int s5c73m3_oif_g_frame_interval(struct v4l2_subdev *sd,
875 struct v4l2_subdev_frame_interval *fi)
876 {
877 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
878
879 if (fi->pad != OIF_SOURCE_PAD)
880 return -EINVAL;
881
882 mutex_lock(&state->lock);
883 fi->interval = state->fiv->interval;
884 mutex_unlock(&state->lock);
885
886 return 0;
887 }
888
889 static int __s5c73m3_set_frame_interval(struct s5c73m3 *state,
890 struct v4l2_subdev_frame_interval *fi)
891 {
892 const struct s5c73m3_frame_size *prev_size =
893 state->sensor_pix_size[RES_ISP];
894 const struct s5c73m3_interval *fiv = &s5c73m3_intervals[0];
895 unsigned int ret, min_err = UINT_MAX;
896 unsigned int i, fr_time;
897
898 if (fi->interval.denominator == 0)
899 return -EINVAL;
900
901 fr_time = fi->interval.numerator * 1000 / fi->interval.denominator;
902
903 for (i = 0; i < ARRAY_SIZE(s5c73m3_intervals); i++) {
904 const struct s5c73m3_interval *iv = &s5c73m3_intervals[i];
905
906 if (prev_size->width > iv->size.width ||
907 prev_size->height > iv->size.height)
908 continue;
909
910 ret = abs(iv->interval.numerator / 1000 - fr_time);
911 if (ret < min_err) {
912 fiv = iv;
913 min_err = ret;
914 }
915 }
916 state->fiv = fiv;
917
918 v4l2_dbg(1, s5c73m3_dbg, &state->sensor_sd,
919 "Changed frame interval to %u us\n", fiv->interval.numerator);
920 return 0;
921 }
922
923 static int s5c73m3_oif_s_frame_interval(struct v4l2_subdev *sd,
924 struct v4l2_subdev_frame_interval *fi)
925 {
926 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
927 int ret;
928
929 if (fi->pad != OIF_SOURCE_PAD)
930 return -EINVAL;
931
932 v4l2_dbg(1, s5c73m3_dbg, sd, "Setting %d/%d frame interval\n",
933 fi->interval.numerator, fi->interval.denominator);
934
935 mutex_lock(&state->lock);
936
937 ret = __s5c73m3_set_frame_interval(state, fi);
938 if (!ret) {
939 if (state->streaming)
940 ret = s5c73m3_set_frame_rate(state);
941 else
942 state->apply_fiv = 1;
943 }
944 mutex_unlock(&state->lock);
945 return ret;
946 }
947
948 static int s5c73m3_oif_enum_frame_interval(struct v4l2_subdev *sd,
949 struct v4l2_subdev_pad_config *cfg,
950 struct v4l2_subdev_frame_interval_enum *fie)
951 {
952 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
953 const struct s5c73m3_interval *fi;
954 int ret = 0;
955
956 if (fie->pad != OIF_SOURCE_PAD)
957 return -EINVAL;
958 if (fie->index >= ARRAY_SIZE(s5c73m3_intervals))
959 return -EINVAL;
960
961 mutex_lock(&state->lock);
962 fi = &s5c73m3_intervals[fie->index];
963 if (fie->width > fi->size.width || fie->height > fi->size.height)
964 ret = -EINVAL;
965 else
966 fie->interval = fi->interval;
967 mutex_unlock(&state->lock);
968
969 return ret;
970 }
971
972 static int s5c73m3_oif_get_pad_code(int pad, int index)
973 {
974 if (pad == OIF_SOURCE_PAD) {
975 if (index > 1)
976 return -EINVAL;
977 return (index == 0) ? S5C73M3_ISP_FMT : S5C73M3_JPEG_FMT;
978 }
979
980 if (index > 0)
981 return -EINVAL;
982
983 return (pad == OIF_ISP_PAD) ? S5C73M3_ISP_FMT : S5C73M3_JPEG_FMT;
984 }
985
986 static int s5c73m3_get_fmt(struct v4l2_subdev *sd,
987 struct v4l2_subdev_pad_config *cfg,
988 struct v4l2_subdev_format *fmt)
989 {
990 struct s5c73m3 *state = sensor_sd_to_s5c73m3(sd);
991 const struct s5c73m3_frame_size *fs;
992 u32 code;
993
994 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
995 fmt->format = *v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
996 return 0;
997 }
998
999 mutex_lock(&state->lock);
1000
1001 switch (fmt->pad) {
1002 case S5C73M3_ISP_PAD:
1003 code = S5C73M3_ISP_FMT;
1004 fs = state->sensor_pix_size[RES_ISP];
1005 break;
1006 case S5C73M3_JPEG_PAD:
1007 code = S5C73M3_JPEG_FMT;
1008 fs = state->sensor_pix_size[RES_JPEG];
1009 break;
1010 default:
1011 mutex_unlock(&state->lock);
1012 return -EINVAL;
1013 }
1014 s5c73m3_fill_mbus_fmt(&fmt->format, fs, code);
1015
1016 mutex_unlock(&state->lock);
1017 return 0;
1018 }
1019
1020 static int s5c73m3_oif_get_fmt(struct v4l2_subdev *sd,
1021 struct v4l2_subdev_pad_config *cfg,
1022 struct v4l2_subdev_format *fmt)
1023 {
1024 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
1025 const struct s5c73m3_frame_size *fs;
1026 u32 code;
1027
1028 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1029 fmt->format = *v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
1030 return 0;
1031 }
1032
1033 mutex_lock(&state->lock);
1034
1035 switch (fmt->pad) {
1036 case OIF_ISP_PAD:
1037 code = S5C73M3_ISP_FMT;
1038 fs = state->oif_pix_size[RES_ISP];
1039 break;
1040 case OIF_JPEG_PAD:
1041 code = S5C73M3_JPEG_FMT;
1042 fs = state->oif_pix_size[RES_JPEG];
1043 break;
1044 case OIF_SOURCE_PAD:
1045 code = state->mbus_code;
1046 fs = state->oif_pix_size[RES_ISP];
1047 break;
1048 default:
1049 mutex_unlock(&state->lock);
1050 return -EINVAL;
1051 }
1052 s5c73m3_fill_mbus_fmt(&fmt->format, fs, code);
1053
1054 mutex_unlock(&state->lock);
1055 return 0;
1056 }
1057
1058 static int s5c73m3_set_fmt(struct v4l2_subdev *sd,
1059 struct v4l2_subdev_pad_config *cfg,
1060 struct v4l2_subdev_format *fmt)
1061 {
1062 const struct s5c73m3_frame_size *frame_size = NULL;
1063 struct s5c73m3 *state = sensor_sd_to_s5c73m3(sd);
1064 struct v4l2_mbus_framefmt *mf;
1065 int ret = 0;
1066
1067 mutex_lock(&state->lock);
1068
1069 s5c73m3_try_format(state, cfg, fmt, &frame_size);
1070
1071 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1072 mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
1073 *mf = fmt->format;
1074 } else {
1075 switch (fmt->pad) {
1076 case S5C73M3_ISP_PAD:
1077 state->sensor_pix_size[RES_ISP] = frame_size;
1078 break;
1079 case S5C73M3_JPEG_PAD:
1080 state->sensor_pix_size[RES_JPEG] = frame_size;
1081 break;
1082 default:
1083 ret = -EBUSY;
1084 }
1085
1086 if (state->streaming)
1087 ret = -EBUSY;
1088 else
1089 state->apply_fmt = 1;
1090 }
1091
1092 mutex_unlock(&state->lock);
1093
1094 return ret;
1095 }
1096
1097 static int s5c73m3_oif_set_fmt(struct v4l2_subdev *sd,
1098 struct v4l2_subdev_pad_config *cfg,
1099 struct v4l2_subdev_format *fmt)
1100 {
1101 const struct s5c73m3_frame_size *frame_size = NULL;
1102 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
1103 struct v4l2_mbus_framefmt *mf;
1104 int ret = 0;
1105
1106 mutex_lock(&state->lock);
1107
1108 s5c73m3_oif_try_format(state, cfg, fmt, &frame_size);
1109
1110 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1111 mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
1112 *mf = fmt->format;
1113 if (fmt->pad == OIF_ISP_PAD) {
1114 mf = v4l2_subdev_get_try_format(sd, cfg, OIF_SOURCE_PAD);
1115 mf->width = fmt->format.width;
1116 mf->height = fmt->format.height;
1117 }
1118 } else {
1119 switch (fmt->pad) {
1120 case OIF_ISP_PAD:
1121 state->oif_pix_size[RES_ISP] = frame_size;
1122 break;
1123 case OIF_JPEG_PAD:
1124 state->oif_pix_size[RES_JPEG] = frame_size;
1125 break;
1126 case OIF_SOURCE_PAD:
1127 state->mbus_code = fmt->format.code;
1128 break;
1129 default:
1130 ret = -EBUSY;
1131 }
1132
1133 if (state->streaming)
1134 ret = -EBUSY;
1135 else
1136 state->apply_fmt = 1;
1137 }
1138
1139 mutex_unlock(&state->lock);
1140
1141 return ret;
1142 }
1143
1144 static int s5c73m3_oif_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
1145 struct v4l2_mbus_frame_desc *fd)
1146 {
1147 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
1148 int i;
1149
1150 if (pad != OIF_SOURCE_PAD || fd == NULL)
1151 return -EINVAL;
1152
1153 mutex_lock(&state->lock);
1154 fd->num_entries = 2;
1155 for (i = 0; i < fd->num_entries; i++)
1156 fd->entry[i] = state->frame_desc.entry[i];
1157 mutex_unlock(&state->lock);
1158
1159 return 0;
1160 }
1161
1162 static int s5c73m3_oif_set_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
1163 struct v4l2_mbus_frame_desc *fd)
1164 {
1165 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
1166 struct v4l2_mbus_frame_desc *frame_desc = &state->frame_desc;
1167 int i;
1168
1169 if (pad != OIF_SOURCE_PAD || fd == NULL)
1170 return -EINVAL;
1171
1172 fd->entry[0].length = 10 * SZ_1M;
1173 fd->entry[1].length = max_t(u32, fd->entry[1].length,
1174 S5C73M3_EMBEDDED_DATA_MAXLEN);
1175 fd->num_entries = 2;
1176
1177 mutex_lock(&state->lock);
1178 for (i = 0; i < fd->num_entries; i++)
1179 frame_desc->entry[i] = fd->entry[i];
1180 mutex_unlock(&state->lock);
1181
1182 return 0;
1183 }
1184
1185 static int s5c73m3_enum_mbus_code(struct v4l2_subdev *sd,
1186 struct v4l2_subdev_pad_config *cfg,
1187 struct v4l2_subdev_mbus_code_enum *code)
1188 {
1189 static const int codes[] = {
1190 [S5C73M3_ISP_PAD] = S5C73M3_ISP_FMT,
1191 [S5C73M3_JPEG_PAD] = S5C73M3_JPEG_FMT};
1192
1193 if (code->index > 0 || code->pad >= S5C73M3_NUM_PADS)
1194 return -EINVAL;
1195
1196 code->code = codes[code->pad];
1197
1198 return 0;
1199 }
1200
1201 static int s5c73m3_oif_enum_mbus_code(struct v4l2_subdev *sd,
1202 struct v4l2_subdev_pad_config *cfg,
1203 struct v4l2_subdev_mbus_code_enum *code)
1204 {
1205 int ret;
1206
1207 ret = s5c73m3_oif_get_pad_code(code->pad, code->index);
1208 if (ret < 0)
1209 return ret;
1210
1211 code->code = ret;
1212
1213 return 0;
1214 }
1215
1216 static int s5c73m3_enum_frame_size(struct v4l2_subdev *sd,
1217 struct v4l2_subdev_pad_config *cfg,
1218 struct v4l2_subdev_frame_size_enum *fse)
1219 {
1220 int idx;
1221
1222 if (fse->pad == S5C73M3_ISP_PAD) {
1223 if (fse->code != S5C73M3_ISP_FMT)
1224 return -EINVAL;
1225 idx = RES_ISP;
1226 } else{
1227 if (fse->code != S5C73M3_JPEG_FMT)
1228 return -EINVAL;
1229 idx = RES_JPEG;
1230 }
1231
1232 if (fse->index >= s5c73m3_resolutions_len[idx])
1233 return -EINVAL;
1234
1235 fse->min_width = s5c73m3_resolutions[idx][fse->index].width;
1236 fse->max_width = fse->min_width;
1237 fse->max_height = s5c73m3_resolutions[idx][fse->index].height;
1238 fse->min_height = fse->max_height;
1239
1240 return 0;
1241 }
1242
1243 static int s5c73m3_oif_enum_frame_size(struct v4l2_subdev *sd,
1244 struct v4l2_subdev_pad_config *cfg,
1245 struct v4l2_subdev_frame_size_enum *fse)
1246 {
1247 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
1248 int idx;
1249
1250 if (fse->pad == OIF_SOURCE_PAD) {
1251 if (fse->index > 0)
1252 return -EINVAL;
1253
1254 switch (fse->code) {
1255 case S5C73M3_JPEG_FMT:
1256 case S5C73M3_ISP_FMT: {
1257 unsigned w, h;
1258
1259 if (fse->which == V4L2_SUBDEV_FORMAT_TRY) {
1260 struct v4l2_mbus_framefmt *mf;
1261
1262 mf = v4l2_subdev_get_try_format(sd, cfg,
1263 OIF_ISP_PAD);
1264
1265 w = mf->width;
1266 h = mf->height;
1267 } else {
1268 const struct s5c73m3_frame_size *fs;
1269
1270 fs = state->oif_pix_size[RES_ISP];
1271 w = fs->width;
1272 h = fs->height;
1273 }
1274 fse->max_width = fse->min_width = w;
1275 fse->max_height = fse->min_height = h;
1276 return 0;
1277 }
1278 default:
1279 return -EINVAL;
1280 }
1281 }
1282
1283 if (fse->code != s5c73m3_oif_get_pad_code(fse->pad, 0))
1284 return -EINVAL;
1285
1286 if (fse->pad == OIF_JPEG_PAD)
1287 idx = RES_JPEG;
1288 else
1289 idx = RES_ISP;
1290
1291 if (fse->index >= s5c73m3_resolutions_len[idx])
1292 return -EINVAL;
1293
1294 fse->min_width = s5c73m3_resolutions[idx][fse->index].width;
1295 fse->max_width = fse->min_width;
1296 fse->max_height = s5c73m3_resolutions[idx][fse->index].height;
1297 fse->min_height = fse->max_height;
1298
1299 return 0;
1300 }
1301
1302 static int s5c73m3_oif_log_status(struct v4l2_subdev *sd)
1303 {
1304 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
1305
1306 v4l2_ctrl_handler_log_status(sd->ctrl_handler, sd->name);
1307
1308 v4l2_info(sd, "power: %d, apply_fmt: %d\n", state->power,
1309 state->apply_fmt);
1310
1311 return 0;
1312 }
1313
1314 static int s5c73m3_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
1315 {
1316 struct v4l2_mbus_framefmt *mf;
1317
1318 mf = v4l2_subdev_get_try_format(sd, fh->pad, S5C73M3_ISP_PAD);
1319 s5c73m3_fill_mbus_fmt(mf, &s5c73m3_isp_resolutions[1],
1320 S5C73M3_ISP_FMT);
1321
1322 mf = v4l2_subdev_get_try_format(sd, fh->pad, S5C73M3_JPEG_PAD);
1323 s5c73m3_fill_mbus_fmt(mf, &s5c73m3_jpeg_resolutions[1],
1324 S5C73M3_JPEG_FMT);
1325
1326 return 0;
1327 }
1328
1329 static int s5c73m3_oif_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
1330 {
1331 struct v4l2_mbus_framefmt *mf;
1332
1333 mf = v4l2_subdev_get_try_format(sd, fh->pad, OIF_ISP_PAD);
1334 s5c73m3_fill_mbus_fmt(mf, &s5c73m3_isp_resolutions[1],
1335 S5C73M3_ISP_FMT);
1336
1337 mf = v4l2_subdev_get_try_format(sd, fh->pad, OIF_JPEG_PAD);
1338 s5c73m3_fill_mbus_fmt(mf, &s5c73m3_jpeg_resolutions[1],
1339 S5C73M3_JPEG_FMT);
1340
1341 mf = v4l2_subdev_get_try_format(sd, fh->pad, OIF_SOURCE_PAD);
1342 s5c73m3_fill_mbus_fmt(mf, &s5c73m3_isp_resolutions[1],
1343 S5C73M3_ISP_FMT);
1344 return 0;
1345 }
1346
1347 static int s5c73m3_gpio_set_value(struct s5c73m3 *priv, int id, u32 val)
1348 {
1349 if (!gpio_is_valid(priv->gpio[id].gpio))
1350 return 0;
1351 gpio_set_value(priv->gpio[id].gpio, !!val);
1352 return 1;
1353 }
1354
1355 static int s5c73m3_gpio_assert(struct s5c73m3 *priv, int id)
1356 {
1357 return s5c73m3_gpio_set_value(priv, id, priv->gpio[id].level);
1358 }
1359
1360 static int s5c73m3_gpio_deassert(struct s5c73m3 *priv, int id)
1361 {
1362 return s5c73m3_gpio_set_value(priv, id, !priv->gpio[id].level);
1363 }
1364
1365 static int __s5c73m3_power_on(struct s5c73m3 *state)
1366 {
1367 int i, ret;
1368
1369 for (i = 0; i < S5C73M3_MAX_SUPPLIES; i++) {
1370 ret = regulator_enable(state->supplies[i].consumer);
1371 if (ret)
1372 goto err_reg_dis;
1373 }
1374
1375 ret = clk_set_rate(state->clock, state->mclk_frequency);
1376 if (ret < 0)
1377 goto err_reg_dis;
1378
1379 ret = clk_prepare_enable(state->clock);
1380 if (ret < 0)
1381 goto err_reg_dis;
1382
1383 v4l2_dbg(1, s5c73m3_dbg, &state->oif_sd, "clock frequency: %ld\n",
1384 clk_get_rate(state->clock));
1385
1386 s5c73m3_gpio_deassert(state, STBY);
1387 usleep_range(100, 200);
1388
1389 s5c73m3_gpio_deassert(state, RST);
1390 usleep_range(50, 100);
1391
1392 return 0;
1393
1394 err_reg_dis:
1395 for (--i; i >= 0; i--)
1396 regulator_disable(state->supplies[i].consumer);
1397 return ret;
1398 }
1399
1400 static int __s5c73m3_power_off(struct s5c73m3 *state)
1401 {
1402 int i, ret;
1403
1404 if (s5c73m3_gpio_assert(state, RST))
1405 usleep_range(10, 50);
1406
1407 if (s5c73m3_gpio_assert(state, STBY))
1408 usleep_range(100, 200);
1409
1410 clk_disable_unprepare(state->clock);
1411
1412 state->streaming = 0;
1413 state->isp_ready = 0;
1414
1415 for (i = S5C73M3_MAX_SUPPLIES - 1; i >= 0; i--) {
1416 ret = regulator_disable(state->supplies[i].consumer);
1417 if (ret)
1418 goto err;
1419 }
1420
1421 return 0;
1422 err:
1423 for (++i; i < S5C73M3_MAX_SUPPLIES; i++) {
1424 int r = regulator_enable(state->supplies[i].consumer);
1425 if (r < 0)
1426 v4l2_err(&state->oif_sd, "Failed to re-enable %s: %d\n",
1427 state->supplies[i].supply, r);
1428 }
1429
1430 clk_prepare_enable(state->clock);
1431 return ret;
1432 }
1433
1434 static int s5c73m3_oif_set_power(struct v4l2_subdev *sd, int on)
1435 {
1436 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
1437 int ret = 0;
1438
1439 mutex_lock(&state->lock);
1440
1441 if (on && !state->power) {
1442 ret = __s5c73m3_power_on(state);
1443 if (!ret)
1444 ret = s5c73m3_isp_init(state);
1445 if (!ret) {
1446 state->apply_fiv = 1;
1447 state->apply_fmt = 1;
1448 }
1449 } else if (state->power == !on) {
1450 ret = s5c73m3_set_af_softlanding(state);
1451 if (!ret)
1452 ret = __s5c73m3_power_off(state);
1453 else
1454 v4l2_err(sd, "Soft landing lens failed\n");
1455 }
1456 if (!ret)
1457 state->power += on ? 1 : -1;
1458
1459 v4l2_dbg(1, s5c73m3_dbg, sd, "%s: power: %d\n",
1460 __func__, state->power);
1461
1462 mutex_unlock(&state->lock);
1463 return ret;
1464 }
1465
1466 static int s5c73m3_oif_registered(struct v4l2_subdev *sd)
1467 {
1468 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
1469 int ret;
1470
1471 ret = v4l2_device_register_subdev(sd->v4l2_dev, &state->sensor_sd);
1472 if (ret) {
1473 v4l2_err(sd->v4l2_dev, "Failed to register %s\n",
1474 state->oif_sd.name);
1475 return ret;
1476 }
1477
1478 ret = media_create_pad_link(&state->sensor_sd.entity,
1479 S5C73M3_ISP_PAD, &state->oif_sd.entity, OIF_ISP_PAD,
1480 MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED);
1481
1482 ret = media_create_pad_link(&state->sensor_sd.entity,
1483 S5C73M3_JPEG_PAD, &state->oif_sd.entity, OIF_JPEG_PAD,
1484 MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED);
1485
1486 return ret;
1487 }
1488
1489 static void s5c73m3_oif_unregistered(struct v4l2_subdev *sd)
1490 {
1491 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
1492 v4l2_device_unregister_subdev(&state->sensor_sd);
1493 }
1494
1495 static const struct v4l2_subdev_internal_ops s5c73m3_internal_ops = {
1496 .open = s5c73m3_open,
1497 };
1498
1499 static const struct v4l2_subdev_pad_ops s5c73m3_pad_ops = {
1500 .enum_mbus_code = s5c73m3_enum_mbus_code,
1501 .enum_frame_size = s5c73m3_enum_frame_size,
1502 .get_fmt = s5c73m3_get_fmt,
1503 .set_fmt = s5c73m3_set_fmt,
1504 };
1505
1506 static const struct v4l2_subdev_ops s5c73m3_subdev_ops = {
1507 .pad = &s5c73m3_pad_ops,
1508 };
1509
1510 static const struct v4l2_subdev_internal_ops oif_internal_ops = {
1511 .registered = s5c73m3_oif_registered,
1512 .unregistered = s5c73m3_oif_unregistered,
1513 .open = s5c73m3_oif_open,
1514 };
1515
1516 static const struct v4l2_subdev_pad_ops s5c73m3_oif_pad_ops = {
1517 .enum_mbus_code = s5c73m3_oif_enum_mbus_code,
1518 .enum_frame_size = s5c73m3_oif_enum_frame_size,
1519 .enum_frame_interval = s5c73m3_oif_enum_frame_interval,
1520 .get_fmt = s5c73m3_oif_get_fmt,
1521 .set_fmt = s5c73m3_oif_set_fmt,
1522 .get_frame_desc = s5c73m3_oif_get_frame_desc,
1523 .set_frame_desc = s5c73m3_oif_set_frame_desc,
1524 };
1525
1526 static const struct v4l2_subdev_core_ops s5c73m3_oif_core_ops = {
1527 .s_power = s5c73m3_oif_set_power,
1528 .log_status = s5c73m3_oif_log_status,
1529 };
1530
1531 static const struct v4l2_subdev_video_ops s5c73m3_oif_video_ops = {
1532 .s_stream = s5c73m3_oif_s_stream,
1533 .g_frame_interval = s5c73m3_oif_g_frame_interval,
1534 .s_frame_interval = s5c73m3_oif_s_frame_interval,
1535 };
1536
1537 static const struct v4l2_subdev_ops oif_subdev_ops = {
1538 .core = &s5c73m3_oif_core_ops,
1539 .pad = &s5c73m3_oif_pad_ops,
1540 .video = &s5c73m3_oif_video_ops,
1541 };
1542
1543 static int s5c73m3_configure_gpios(struct s5c73m3 *state)
1544 {
1545 static const char * const gpio_names[] = {
1546 "S5C73M3_STBY", "S5C73M3_RST"
1547 };
1548 struct i2c_client *c = state->i2c_client;
1549 struct s5c73m3_gpio *g = state->gpio;
1550 int ret, i;
1551
1552 for (i = 0; i < GPIO_NUM; ++i) {
1553 unsigned int flags = GPIOF_DIR_OUT;
1554 if (g[i].level)
1555 flags |= GPIOF_INIT_HIGH;
1556 ret = devm_gpio_request_one(&c->dev, g[i].gpio, flags,
1557 gpio_names[i]);
1558 if (ret) {
1559 v4l2_err(c, "failed to request gpio %s\n",
1560 gpio_names[i]);
1561 return ret;
1562 }
1563 }
1564 return 0;
1565 }
1566
1567 static int s5c73m3_parse_gpios(struct s5c73m3 *state)
1568 {
1569 static const char * const prop_names[] = {
1570 "standby-gpios", "xshutdown-gpios",
1571 };
1572 struct device *dev = &state->i2c_client->dev;
1573 struct device_node *node = dev->of_node;
1574 int ret, i;
1575
1576 for (i = 0; i < GPIO_NUM; ++i) {
1577 enum of_gpio_flags of_flags;
1578
1579 ret = of_get_named_gpio_flags(node, prop_names[i],
1580 0, &of_flags);
1581 if (ret < 0) {
1582 dev_err(dev, "failed to parse %s DT property\n",
1583 prop_names[i]);
1584 return -EINVAL;
1585 }
1586 state->gpio[i].gpio = ret;
1587 state->gpio[i].level = !(of_flags & OF_GPIO_ACTIVE_LOW);
1588 }
1589 return 0;
1590 }
1591
1592 static int s5c73m3_get_platform_data(struct s5c73m3 *state)
1593 {
1594 struct device *dev = &state->i2c_client->dev;
1595 const struct s5c73m3_platform_data *pdata = dev->platform_data;
1596 struct device_node *node = dev->of_node;
1597 struct device_node *node_ep;
1598 struct v4l2_fwnode_endpoint ep = { .bus_type = 0 };
1599 int ret;
1600
1601 if (!node) {
1602 if (!pdata) {
1603 dev_err(dev, "Platform data not specified\n");
1604 return -EINVAL;
1605 }
1606
1607 state->mclk_frequency = pdata->mclk_frequency;
1608 state->gpio[STBY] = pdata->gpio_stby;
1609 state->gpio[RST] = pdata->gpio_reset;
1610 return 0;
1611 }
1612
1613 state->clock = devm_clk_get(dev, S5C73M3_CLK_NAME);
1614 if (IS_ERR(state->clock))
1615 return PTR_ERR(state->clock);
1616
1617 if (of_property_read_u32(node, "clock-frequency",
1618 &state->mclk_frequency)) {
1619 state->mclk_frequency = S5C73M3_DEFAULT_MCLK_FREQ;
1620 dev_info(dev, "using default %u Hz clock frequency\n",
1621 state->mclk_frequency);
1622 }
1623
1624 ret = s5c73m3_parse_gpios(state);
1625 if (ret < 0)
1626 return -EINVAL;
1627
1628 node_ep = of_graph_get_next_endpoint(node, NULL);
1629 if (!node_ep) {
1630 dev_warn(dev, "no endpoint defined for node: %pOF\n", node);
1631 return 0;
1632 }
1633
1634 ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(node_ep), &ep);
1635 of_node_put(node_ep);
1636 if (ret)
1637 return ret;
1638
1639 if (ep.bus_type != V4L2_MBUS_CSI2_DPHY) {
1640 dev_err(dev, "unsupported bus type\n");
1641 return -EINVAL;
1642 }
1643 /*
1644 * Number of MIPI CSI-2 data lanes is currently not configurable,
1645 * always a default value of 4 lanes is used.
1646 */
1647 if (ep.bus.mipi_csi2.num_data_lanes != S5C73M3_MIPI_DATA_LANES)
1648 dev_info(dev, "falling back to 4 MIPI CSI-2 data lanes\n");
1649
1650 return 0;
1651 }
1652
1653 static int s5c73m3_probe(struct i2c_client *client)
1654 {
1655 struct device *dev = &client->dev;
1656 struct v4l2_subdev *sd;
1657 struct v4l2_subdev *oif_sd;
1658 struct s5c73m3 *state;
1659 int ret, i;
1660
1661 state = devm_kzalloc(dev, sizeof(*state), GFP_KERNEL);
1662 if (!state)
1663 return -ENOMEM;
1664
1665 state->i2c_client = client;
1666 ret = s5c73m3_get_platform_data(state);
1667 if (ret < 0)
1668 return ret;
1669
1670 mutex_init(&state->lock);
1671 sd = &state->sensor_sd;
1672 oif_sd = &state->oif_sd;
1673
1674 v4l2_subdev_init(sd, &s5c73m3_subdev_ops);
1675 sd->owner = client->dev.driver->owner;
1676 v4l2_set_subdevdata(sd, state);
1677 strscpy(sd->name, "S5C73M3", sizeof(sd->name));
1678
1679 sd->internal_ops = &s5c73m3_internal_ops;
1680 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1681
1682 state->sensor_pads[S5C73M3_JPEG_PAD].flags = MEDIA_PAD_FL_SOURCE;
1683 state->sensor_pads[S5C73M3_ISP_PAD].flags = MEDIA_PAD_FL_SOURCE;
1684 sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
1685
1686 ret = media_entity_pads_init(&sd->entity, S5C73M3_NUM_PADS,
1687 state->sensor_pads);
1688 if (ret < 0)
1689 return ret;
1690
1691 v4l2_i2c_subdev_init(oif_sd, client, &oif_subdev_ops);
1692 /* Static name; NEVER use in new drivers! */
1693 strscpy(oif_sd->name, "S5C73M3-OIF", sizeof(oif_sd->name));
1694
1695 oif_sd->internal_ops = &oif_internal_ops;
1696 oif_sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1697
1698 state->oif_pads[OIF_ISP_PAD].flags = MEDIA_PAD_FL_SINK;
1699 state->oif_pads[OIF_JPEG_PAD].flags = MEDIA_PAD_FL_SINK;
1700 state->oif_pads[OIF_SOURCE_PAD].flags = MEDIA_PAD_FL_SOURCE;
1701 oif_sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
1702
1703 ret = media_entity_pads_init(&oif_sd->entity, OIF_NUM_PADS,
1704 state->oif_pads);
1705 if (ret < 0)
1706 return ret;
1707
1708 ret = s5c73m3_configure_gpios(state);
1709 if (ret)
1710 goto out_err;
1711
1712 for (i = 0; i < S5C73M3_MAX_SUPPLIES; i++)
1713 state->supplies[i].supply = s5c73m3_supply_names[i];
1714
1715 ret = devm_regulator_bulk_get(dev, S5C73M3_MAX_SUPPLIES,
1716 state->supplies);
1717 if (ret) {
1718 dev_err(dev, "failed to get regulators\n");
1719 goto out_err;
1720 }
1721
1722 ret = s5c73m3_init_controls(state);
1723 if (ret)
1724 goto out_err;
1725
1726 state->sensor_pix_size[RES_ISP] = &s5c73m3_isp_resolutions[1];
1727 state->sensor_pix_size[RES_JPEG] = &s5c73m3_jpeg_resolutions[1];
1728 state->oif_pix_size[RES_ISP] = state->sensor_pix_size[RES_ISP];
1729 state->oif_pix_size[RES_JPEG] = state->sensor_pix_size[RES_JPEG];
1730
1731 state->mbus_code = S5C73M3_ISP_FMT;
1732
1733 state->fiv = &s5c73m3_intervals[S5C73M3_DEFAULT_FRAME_INTERVAL];
1734
1735 state->fw_file_version[0] = 'G';
1736 state->fw_file_version[1] = 'C';
1737
1738 ret = s5c73m3_register_spi_driver(state);
1739 if (ret < 0)
1740 goto out_err;
1741
1742 oif_sd->dev = dev;
1743
1744 ret = __s5c73m3_power_on(state);
1745 if (ret < 0)
1746 goto out_err1;
1747
1748 ret = s5c73m3_get_fw_version(state);
1749 __s5c73m3_power_off(state);
1750
1751 if (ret < 0) {
1752 dev_err(dev, "Device detection failed: %d\n", ret);
1753 goto out_err1;
1754 }
1755
1756 ret = v4l2_async_register_subdev(oif_sd);
1757 if (ret < 0)
1758 goto out_err1;
1759
1760 v4l2_info(sd, "%s: completed successfully\n", __func__);
1761 return 0;
1762
1763 out_err1:
1764 s5c73m3_unregister_spi_driver(state);
1765 out_err:
1766 media_entity_cleanup(&sd->entity);
1767 return ret;
1768 }
1769
1770 static int s5c73m3_remove(struct i2c_client *client)
1771 {
1772 struct v4l2_subdev *oif_sd = i2c_get_clientdata(client);
1773 struct s5c73m3 *state = oif_sd_to_s5c73m3(oif_sd);
1774 struct v4l2_subdev *sensor_sd = &state->sensor_sd;
1775
1776 v4l2_async_unregister_subdev(oif_sd);
1777
1778 v4l2_ctrl_handler_free(oif_sd->ctrl_handler);
1779 media_entity_cleanup(&oif_sd->entity);
1780
1781 v4l2_device_unregister_subdev(sensor_sd);
1782 media_entity_cleanup(&sensor_sd->entity);
1783
1784 s5c73m3_unregister_spi_driver(state);
1785
1786 return 0;
1787 }
1788
1789 static const struct i2c_device_id s5c73m3_id[] = {
1790 { DRIVER_NAME, 0 },
1791 { }
1792 };
1793 MODULE_DEVICE_TABLE(i2c, s5c73m3_id);
1794
1795 #ifdef CONFIG_OF
1796 static const struct of_device_id s5c73m3_of_match[] = {
1797 { .compatible = "samsung,s5c73m3" },
1798 { }
1799 };
1800 MODULE_DEVICE_TABLE(of, s5c73m3_of_match);
1801 #endif
1802
1803 static struct i2c_driver s5c73m3_i2c_driver = {
1804 .driver = {
1805 .of_match_table = of_match_ptr(s5c73m3_of_match),
1806 .name = DRIVER_NAME,
1807 },
1808 .probe_new = s5c73m3_probe,
1809 .remove = s5c73m3_remove,
1810 .id_table = s5c73m3_id,
1811 };
1812
1813 module_i2c_driver(s5c73m3_i2c_driver);
1814
1815 MODULE_DESCRIPTION("Samsung S5C73M3 camera driver");
1816 MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
1817 MODULE_LICENSE("GPL");
Linux with added FPC-III support