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[deliverable/linux.git] / drivers / media / i2c / s5c73m3 / s5c73m3-core.c
1 /*
2 * Samsung LSI S5C73M3 8M pixel camera driver
3 *
4 * Copyright (C) 2012, Samsung Electronics, Co., Ltd.
5 * Sylwester Nawrocki <s.nawrocki@samsung.com>
6 * Andrzej Hajda <a.hajda@samsung.com>
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 */
17
18 #include <linux/clk.h>
19 #include <linux/delay.h>
20 #include <linux/firmware.h>
21 #include <linux/gpio.h>
22 #include <linux/i2c.h>
23 #include <linux/init.h>
24 #include <linux/media.h>
25 #include <linux/module.h>
26 #include <linux/of_gpio.h>
27 #include <linux/regulator/consumer.h>
28 #include <linux/sizes.h>
29 #include <linux/slab.h>
30 #include <linux/spi/spi.h>
31 #include <linux/videodev2.h>
32 #include <media/media-entity.h>
33 #include <media/v4l2-ctrls.h>
34 #include <media/v4l2-device.h>
35 #include <media/v4l2-subdev.h>
36 #include <media/v4l2-mediabus.h>
37 #include <media/i2c/s5c73m3.h>
38 #include <media/v4l2-of.h>
39
40 #include "s5c73m3.h"
41
42 int s5c73m3_dbg;
43 module_param_named(debug, s5c73m3_dbg, int, 0644);
44
45 static int boot_from_rom = 1;
46 module_param(boot_from_rom, int, 0644);
47
48 static int update_fw;
49 module_param(update_fw, int, 0644);
50
51 #define S5C73M3_EMBEDDED_DATA_MAXLEN SZ_4K
52 #define S5C73M3_MIPI_DATA_LANES 4
53 #define S5C73M3_CLK_NAME "cis_extclk"
54
55 static const char * const s5c73m3_supply_names[S5C73M3_MAX_SUPPLIES] = {
56 "vdd-int", /* Digital Core supply (1.2V), CAM_ISP_CORE_1.2V */
57 "vdda", /* Analog Core supply (1.2V), CAM_SENSOR_CORE_1.2V */
58 "vdd-reg", /* Regulator input supply (2.8V), CAM_SENSOR_A2.8V */
59 "vddio-host", /* Digital Host I/O power supply (1.8V...2.8V),
60 CAM_ISP_SENSOR_1.8V */
61 "vddio-cis", /* Digital CIS I/O power (1.2V...1.8V),
62 CAM_ISP_MIPI_1.2V */
63 "vdd-af", /* Lens, CAM_AF_2.8V */
64 };
65
66 static const struct s5c73m3_frame_size s5c73m3_isp_resolutions[] = {
67 { 320, 240, COMM_CHG_MODE_YUV_320_240 },
68 { 352, 288, COMM_CHG_MODE_YUV_352_288 },
69 { 640, 480, COMM_CHG_MODE_YUV_640_480 },
70 { 880, 720, COMM_CHG_MODE_YUV_880_720 },
71 { 960, 720, COMM_CHG_MODE_YUV_960_720 },
72 { 1008, 672, COMM_CHG_MODE_YUV_1008_672 },
73 { 1184, 666, COMM_CHG_MODE_YUV_1184_666 },
74 { 1280, 720, COMM_CHG_MODE_YUV_1280_720 },
75 { 1536, 864, COMM_CHG_MODE_YUV_1536_864 },
76 { 1600, 1200, COMM_CHG_MODE_YUV_1600_1200 },
77 { 1632, 1224, COMM_CHG_MODE_YUV_1632_1224 },
78 { 1920, 1080, COMM_CHG_MODE_YUV_1920_1080 },
79 { 1920, 1440, COMM_CHG_MODE_YUV_1920_1440 },
80 { 2304, 1296, COMM_CHG_MODE_YUV_2304_1296 },
81 { 3264, 2448, COMM_CHG_MODE_YUV_3264_2448 },
82 };
83
84 static const struct s5c73m3_frame_size s5c73m3_jpeg_resolutions[] = {
85 { 640, 480, COMM_CHG_MODE_JPEG_640_480 },
86 { 800, 450, COMM_CHG_MODE_JPEG_800_450 },
87 { 800, 600, COMM_CHG_MODE_JPEG_800_600 },
88 { 1024, 768, COMM_CHG_MODE_JPEG_1024_768 },
89 { 1280, 720, COMM_CHG_MODE_JPEG_1280_720 },
90 { 1280, 960, COMM_CHG_MODE_JPEG_1280_960 },
91 { 1600, 900, COMM_CHG_MODE_JPEG_1600_900 },
92 { 1600, 1200, COMM_CHG_MODE_JPEG_1600_1200 },
93 { 2048, 1152, COMM_CHG_MODE_JPEG_2048_1152 },
94 { 2048, 1536, COMM_CHG_MODE_JPEG_2048_1536 },
95 { 2560, 1440, COMM_CHG_MODE_JPEG_2560_1440 },
96 { 2560, 1920, COMM_CHG_MODE_JPEG_2560_1920 },
97 { 3264, 1836, COMM_CHG_MODE_JPEG_3264_1836 },
98 { 3264, 2176, COMM_CHG_MODE_JPEG_3264_2176 },
99 { 3264, 2448, COMM_CHG_MODE_JPEG_3264_2448 },
100 };
101
102 static const struct s5c73m3_frame_size * const s5c73m3_resolutions[] = {
103 [RES_ISP] = s5c73m3_isp_resolutions,
104 [RES_JPEG] = s5c73m3_jpeg_resolutions
105 };
106
107 static const int s5c73m3_resolutions_len[] = {
108 [RES_ISP] = ARRAY_SIZE(s5c73m3_isp_resolutions),
109 [RES_JPEG] = ARRAY_SIZE(s5c73m3_jpeg_resolutions)
110 };
111
112 static const struct s5c73m3_interval s5c73m3_intervals[] = {
113 { COMM_FRAME_RATE_FIXED_7FPS, {142857, 1000000}, {3264, 2448} },
114 { COMM_FRAME_RATE_FIXED_15FPS, {66667, 1000000}, {3264, 2448} },
115 { COMM_FRAME_RATE_FIXED_20FPS, {50000, 1000000}, {2304, 1296} },
116 { COMM_FRAME_RATE_FIXED_30FPS, {33333, 1000000}, {2304, 1296} },
117 };
118
119 #define S5C73M3_DEFAULT_FRAME_INTERVAL 3 /* 30 fps */
120
121 static void s5c73m3_fill_mbus_fmt(struct v4l2_mbus_framefmt *mf,
122 const struct s5c73m3_frame_size *fs,
123 u32 code)
124 {
125 mf->width = fs->width;
126 mf->height = fs->height;
127 mf->code = code;
128 mf->colorspace = V4L2_COLORSPACE_JPEG;
129 mf->field = V4L2_FIELD_NONE;
130 }
131
132 static int s5c73m3_i2c_write(struct i2c_client *client, u16 addr, u16 data)
133 {
134 u8 buf[4] = { addr >> 8, addr & 0xff, data >> 8, data & 0xff };
135
136 int ret = i2c_master_send(client, buf, sizeof(buf));
137
138 v4l_dbg(4, s5c73m3_dbg, client, "%s: addr 0x%04x, data 0x%04x\n",
139 __func__, addr, data);
140
141 if (ret == 4)
142 return 0;
143
144 return ret < 0 ? ret : -EREMOTEIO;
145 }
146
147 static int s5c73m3_i2c_read(struct i2c_client *client, u16 addr, u16 *data)
148 {
149 int ret;
150 u8 rbuf[2], wbuf[2] = { addr >> 8, addr & 0xff };
151 struct i2c_msg msg[2] = {
152 {
153 .addr = client->addr,
154 .flags = 0,
155 .len = sizeof(wbuf),
156 .buf = wbuf
157 }, {
158 .addr = client->addr,
159 .flags = I2C_M_RD,
160 .len = sizeof(rbuf),
161 .buf = rbuf
162 }
163 };
164 /*
165 * Issue repeated START after writing 2 address bytes and
166 * just one STOP only after reading the data bytes.
167 */
168 ret = i2c_transfer(client->adapter, msg, 2);
169 if (ret == 2) {
170 *data = be16_to_cpup((__be16 *)rbuf);
171 v4l2_dbg(4, s5c73m3_dbg, client,
172 "%s: addr: 0x%04x, data: 0x%04x\n",
173 __func__, addr, *data);
174 return 0;
175 }
176
177 v4l2_err(client, "I2C read failed: addr: %04x, (%d)\n", addr, ret);
178
179 return ret >= 0 ? -EREMOTEIO : ret;
180 }
181
182 int s5c73m3_write(struct s5c73m3 *state, u32 addr, u16 data)
183 {
184 struct i2c_client *client = state->i2c_client;
185 int ret;
186
187 if ((addr ^ state->i2c_write_address) & 0xffff0000) {
188 ret = s5c73m3_i2c_write(client, REG_CMDWR_ADDRH, addr >> 16);
189 if (ret < 0) {
190 state->i2c_write_address = 0;
191 return ret;
192 }
193 }
194
195 if ((addr ^ state->i2c_write_address) & 0xffff) {
196 ret = s5c73m3_i2c_write(client, REG_CMDWR_ADDRL, addr & 0xffff);
197 if (ret < 0) {
198 state->i2c_write_address = 0;
199 return ret;
200 }
201 }
202
203 state->i2c_write_address = addr;
204
205 ret = s5c73m3_i2c_write(client, REG_CMDBUF_ADDR, data);
206 if (ret < 0)
207 return ret;
208
209 state->i2c_write_address += 2;
210
211 return ret;
212 }
213
214 int s5c73m3_read(struct s5c73m3 *state, u32 addr, u16 *data)
215 {
216 struct i2c_client *client = state->i2c_client;
217 int ret;
218
219 if ((addr ^ state->i2c_read_address) & 0xffff0000) {
220 ret = s5c73m3_i2c_write(client, REG_CMDRD_ADDRH, addr >> 16);
221 if (ret < 0) {
222 state->i2c_read_address = 0;
223 return ret;
224 }
225 }
226
227 if ((addr ^ state->i2c_read_address) & 0xffff) {
228 ret = s5c73m3_i2c_write(client, REG_CMDRD_ADDRL, addr & 0xffff);
229 if (ret < 0) {
230 state->i2c_read_address = 0;
231 return ret;
232 }
233 }
234
235 state->i2c_read_address = addr;
236
237 ret = s5c73m3_i2c_read(client, REG_CMDBUF_ADDR, data);
238 if (ret < 0)
239 return ret;
240
241 state->i2c_read_address += 2;
242
243 return ret;
244 }
245
246 static int s5c73m3_check_status(struct s5c73m3 *state, unsigned int value)
247 {
248 unsigned long start = jiffies;
249 unsigned long end = start + msecs_to_jiffies(2000);
250 int ret = 0;
251 u16 status;
252 int count = 0;
253
254 while (time_is_after_jiffies(end)) {
255 ret = s5c73m3_read(state, REG_STATUS, &status);
256 if (ret < 0 || status == value)
257 break;
258 usleep_range(500, 1000);
259 ++count;
260 }
261
262 if (count > 0)
263 v4l2_dbg(1, s5c73m3_dbg, &state->sensor_sd,
264 "status check took %dms\n",
265 jiffies_to_msecs(jiffies - start));
266
267 if (ret == 0 && status != value) {
268 u16 i2c_status = 0;
269 u16 i2c_seq_status = 0;
270
271 s5c73m3_read(state, REG_I2C_STATUS, &i2c_status);
272 s5c73m3_read(state, REG_I2C_SEQ_STATUS, &i2c_seq_status);
273
274 v4l2_err(&state->sensor_sd,
275 "wrong status %#x, expected: %#x, i2c_status: %#x/%#x\n",
276 status, value, i2c_status, i2c_seq_status);
277
278 return -ETIMEDOUT;
279 }
280
281 return ret;
282 }
283
284 int s5c73m3_isp_command(struct s5c73m3 *state, u16 command, u16 data)
285 {
286 int ret;
287
288 ret = s5c73m3_check_status(state, REG_STATUS_ISP_COMMAND_COMPLETED);
289 if (ret < 0)
290 return ret;
291
292 ret = s5c73m3_write(state, 0x00095000, command);
293 if (ret < 0)
294 return ret;
295
296 ret = s5c73m3_write(state, 0x00095002, data);
297 if (ret < 0)
298 return ret;
299
300 return s5c73m3_write(state, REG_STATUS, 0x0001);
301 }
302
303 static int s5c73m3_isp_comm_result(struct s5c73m3 *state, u16 command,
304 u16 *data)
305 {
306 return s5c73m3_read(state, COMM_RESULT_OFFSET + command, data);
307 }
308
309 static int s5c73m3_set_af_softlanding(struct s5c73m3 *state)
310 {
311 unsigned long start = jiffies;
312 u16 af_softlanding;
313 int count = 0;
314 int ret;
315 const char *msg;
316
317 ret = s5c73m3_isp_command(state, COMM_AF_SOFTLANDING,
318 COMM_AF_SOFTLANDING_ON);
319 if (ret < 0) {
320 v4l2_info(&state->sensor_sd, "AF soft-landing failed\n");
321 return ret;
322 }
323
324 for (;;) {
325 ret = s5c73m3_isp_comm_result(state, COMM_AF_SOFTLANDING,
326 &af_softlanding);
327 if (ret < 0) {
328 msg = "failed";
329 break;
330 }
331 if (af_softlanding == COMM_AF_SOFTLANDING_RES_COMPLETE) {
332 msg = "succeeded";
333 break;
334 }
335 if (++count > 100) {
336 ret = -ETIME;
337 msg = "timed out";
338 break;
339 }
340 msleep(25);
341 }
342
343 v4l2_info(&state->sensor_sd, "AF soft-landing %s after %dms\n",
344 msg, jiffies_to_msecs(jiffies - start));
345
346 return ret;
347 }
348
349 static int s5c73m3_load_fw(struct v4l2_subdev *sd)
350 {
351 struct s5c73m3 *state = sensor_sd_to_s5c73m3(sd);
352 struct i2c_client *client = state->i2c_client;
353 const struct firmware *fw;
354 int ret;
355 char fw_name[20];
356
357 snprintf(fw_name, sizeof(fw_name), "SlimISP_%.2s.bin",
358 state->fw_file_version);
359 ret = request_firmware(&fw, fw_name, &client->dev);
360 if (ret < 0) {
361 v4l2_err(sd, "Firmware request failed (%s)\n", fw_name);
362 return -EINVAL;
363 }
364
365 v4l2_info(sd, "Loading firmware (%s, %zu B)\n", fw_name, fw->size);
366
367 ret = s5c73m3_spi_write(state, fw->data, fw->size, 64);
368
369 if (ret >= 0)
370 state->isp_ready = 1;
371 else
372 v4l2_err(sd, "SPI write failed\n");
373
374 release_firmware(fw);
375
376 return ret;
377 }
378
379 static int s5c73m3_set_frame_size(struct s5c73m3 *state)
380 {
381 const struct s5c73m3_frame_size *prev_size =
382 state->sensor_pix_size[RES_ISP];
383 const struct s5c73m3_frame_size *cap_size =
384 state->sensor_pix_size[RES_JPEG];
385 unsigned int chg_mode;
386
387 v4l2_dbg(1, s5c73m3_dbg, &state->sensor_sd,
388 "Preview size: %dx%d, reg_val: 0x%x\n",
389 prev_size->width, prev_size->height, prev_size->reg_val);
390
391 chg_mode = prev_size->reg_val | COMM_CHG_MODE_NEW;
392
393 if (state->mbus_code == S5C73M3_JPEG_FMT) {
394 v4l2_dbg(1, s5c73m3_dbg, &state->sensor_sd,
395 "Capture size: %dx%d, reg_val: 0x%x\n",
396 cap_size->width, cap_size->height, cap_size->reg_val);
397 chg_mode |= cap_size->reg_val;
398 }
399
400 return s5c73m3_isp_command(state, COMM_CHG_MODE, chg_mode);
401 }
402
403 static int s5c73m3_set_frame_rate(struct s5c73m3 *state)
404 {
405 int ret;
406
407 if (state->ctrls.stabilization->val)
408 return 0;
409
410 if (WARN_ON(state->fiv == NULL))
411 return -EINVAL;
412
413 ret = s5c73m3_isp_command(state, COMM_FRAME_RATE, state->fiv->fps_reg);
414 if (!ret)
415 state->apply_fiv = 0;
416
417 return ret;
418 }
419
420 static int __s5c73m3_s_stream(struct s5c73m3 *state, struct v4l2_subdev *sd,
421 int on)
422 {
423 u16 mode;
424 int ret;
425
426 if (on && state->apply_fmt) {
427 if (state->mbus_code == S5C73M3_JPEG_FMT)
428 mode = COMM_IMG_OUTPUT_INTERLEAVED;
429 else
430 mode = COMM_IMG_OUTPUT_YUV;
431
432 ret = s5c73m3_isp_command(state, COMM_IMG_OUTPUT, mode);
433 if (!ret)
434 ret = s5c73m3_set_frame_size(state);
435 if (ret)
436 return ret;
437 state->apply_fmt = 0;
438 }
439
440 ret = s5c73m3_isp_command(state, COMM_SENSOR_STREAMING, !!on);
441 if (ret)
442 return ret;
443
444 state->streaming = !!on;
445
446 if (!on)
447 return ret;
448
449 if (state->apply_fiv) {
450 ret = s5c73m3_set_frame_rate(state);
451 if (ret < 0)
452 v4l2_err(sd, "Error setting frame rate(%d)\n", ret);
453 }
454
455 return s5c73m3_check_status(state, REG_STATUS_ISP_COMMAND_COMPLETED);
456 }
457
458 static int s5c73m3_oif_s_stream(struct v4l2_subdev *sd, int on)
459 {
460 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
461 int ret;
462
463 mutex_lock(&state->lock);
464 ret = __s5c73m3_s_stream(state, sd, on);
465 mutex_unlock(&state->lock);
466
467 return ret;
468 }
469
470 static int s5c73m3_system_status_wait(struct s5c73m3 *state, u32 value,
471 unsigned int delay, unsigned int steps)
472 {
473 u16 reg = 0;
474
475 while (steps-- > 0) {
476 int ret = s5c73m3_read(state, 0x30100010, &reg);
477 if (ret < 0)
478 return ret;
479 if (reg == value)
480 return 0;
481 usleep_range(delay, delay + 25);
482 }
483 return -ETIMEDOUT;
484 }
485
486 static int s5c73m3_read_fw_version(struct s5c73m3 *state)
487 {
488 struct v4l2_subdev *sd = &state->sensor_sd;
489 int i, ret;
490 u16 data[2];
491 int offset;
492
493 offset = state->isp_ready ? 0x60 : 0;
494
495 for (i = 0; i < S5C73M3_SENSOR_FW_LEN / 2; i++) {
496 ret = s5c73m3_read(state, offset + i * 2, data);
497 if (ret < 0)
498 return ret;
499 state->sensor_fw[i * 2] = (char)(*data & 0xff);
500 state->sensor_fw[i * 2 + 1] = (char)(*data >> 8);
501 }
502 state->sensor_fw[S5C73M3_SENSOR_FW_LEN] = '\0';
503
504
505 for (i = 0; i < S5C73M3_SENSOR_TYPE_LEN / 2; i++) {
506 ret = s5c73m3_read(state, offset + 6 + i * 2, data);
507 if (ret < 0)
508 return ret;
509 state->sensor_type[i * 2] = (char)(*data & 0xff);
510 state->sensor_type[i * 2 + 1] = (char)(*data >> 8);
511 }
512 state->sensor_type[S5C73M3_SENSOR_TYPE_LEN] = '\0';
513
514 ret = s5c73m3_read(state, offset + 0x14, data);
515 if (ret >= 0) {
516 ret = s5c73m3_read(state, offset + 0x16, data + 1);
517 if (ret >= 0)
518 state->fw_size = data[0] + (data[1] << 16);
519 }
520
521 v4l2_info(sd, "Sensor type: %s, FW version: %s\n",
522 state->sensor_type, state->sensor_fw);
523 return ret;
524 }
525
526 static int s5c73m3_fw_update_from(struct s5c73m3 *state)
527 {
528 struct v4l2_subdev *sd = &state->sensor_sd;
529 u16 status = COMM_FW_UPDATE_NOT_READY;
530 int ret;
531 int count = 0;
532
533 v4l2_warn(sd, "Updating F-ROM firmware.\n");
534 do {
535 if (status == COMM_FW_UPDATE_NOT_READY) {
536 ret = s5c73m3_isp_command(state, COMM_FW_UPDATE, 0);
537 if (ret < 0)
538 return ret;
539 }
540
541 ret = s5c73m3_read(state, 0x00095906, &status);
542 if (ret < 0)
543 return ret;
544 switch (status) {
545 case COMM_FW_UPDATE_FAIL:
546 v4l2_warn(sd, "Updating F-ROM firmware failed.\n");
547 return -EIO;
548 case COMM_FW_UPDATE_SUCCESS:
549 v4l2_warn(sd, "Updating F-ROM firmware finished.\n");
550 return 0;
551 }
552 ++count;
553 msleep(20);
554 } while (count < 500);
555
556 v4l2_warn(sd, "Updating F-ROM firmware timed-out.\n");
557 return -ETIMEDOUT;
558 }
559
560 static int s5c73m3_spi_boot(struct s5c73m3 *state, bool load_fw)
561 {
562 struct v4l2_subdev *sd = &state->sensor_sd;
563 int ret;
564
565 /* Run ARM MCU */
566 ret = s5c73m3_write(state, 0x30000004, 0xffff);
567 if (ret < 0)
568 return ret;
569
570 usleep_range(400, 500);
571
572 /* Check booting status */
573 ret = s5c73m3_system_status_wait(state, 0x0c, 100, 3);
574 if (ret < 0) {
575 v4l2_err(sd, "booting failed: %d\n", ret);
576 return ret;
577 }
578
579 /* P,M,S and Boot Mode */
580 ret = s5c73m3_write(state, 0x30100014, 0x2146);
581 if (ret < 0)
582 return ret;
583
584 ret = s5c73m3_write(state, 0x30100010, 0x210c);
585 if (ret < 0)
586 return ret;
587
588 usleep_range(200, 250);
589
590 /* Check SPI status */
591 ret = s5c73m3_system_status_wait(state, 0x210d, 100, 300);
592 if (ret < 0)
593 v4l2_err(sd, "SPI not ready: %d\n", ret);
594
595 /* Firmware download over SPI */
596 if (load_fw)
597 s5c73m3_load_fw(sd);
598
599 /* MCU reset */
600 ret = s5c73m3_write(state, 0x30000004, 0xfffd);
601 if (ret < 0)
602 return ret;
603
604 /* Remap */
605 ret = s5c73m3_write(state, 0x301000a4, 0x0183);
606 if (ret < 0)
607 return ret;
608
609 /* MCU restart */
610 ret = s5c73m3_write(state, 0x30000004, 0xffff);
611 if (ret < 0 || !load_fw)
612 return ret;
613
614 ret = s5c73m3_read_fw_version(state);
615 if (ret < 0)
616 return ret;
617
618 if (load_fw && update_fw) {
619 ret = s5c73m3_fw_update_from(state);
620 update_fw = 0;
621 }
622
623 return ret;
624 }
625
626 static int s5c73m3_set_timing_register_for_vdd(struct s5c73m3 *state)
627 {
628 static const u32 regs[][2] = {
629 { 0x30100018, 0x0618 },
630 { 0x3010001c, 0x10c1 },
631 { 0x30100020, 0x249e }
632 };
633 int ret;
634 int i;
635
636 for (i = 0; i < ARRAY_SIZE(regs); i++) {
637 ret = s5c73m3_write(state, regs[i][0], regs[i][1]);
638 if (ret < 0)
639 return ret;
640 }
641
642 return 0;
643 }
644
645 static void s5c73m3_set_fw_file_version(struct s5c73m3 *state)
646 {
647 switch (state->sensor_fw[0]) {
648 case 'G':
649 case 'O':
650 state->fw_file_version[0] = 'G';
651 break;
652 case 'S':
653 case 'Z':
654 state->fw_file_version[0] = 'Z';
655 break;
656 }
657
658 switch (state->sensor_fw[1]) {
659 case 'C'...'F':
660 state->fw_file_version[1] = state->sensor_fw[1];
661 break;
662 }
663 }
664
665 static int s5c73m3_get_fw_version(struct s5c73m3 *state)
666 {
667 struct v4l2_subdev *sd = &state->sensor_sd;
668 int ret;
669
670 /* Run ARM MCU */
671 ret = s5c73m3_write(state, 0x30000004, 0xffff);
672 if (ret < 0)
673 return ret;
674 usleep_range(400, 500);
675
676 /* Check booting status */
677 ret = s5c73m3_system_status_wait(state, 0x0c, 100, 3);
678 if (ret < 0) {
679
680 v4l2_err(sd, "%s: booting failed: %d\n", __func__, ret);
681 return ret;
682 }
683
684 /* Change I/O Driver Current in order to read from F-ROM */
685 ret = s5c73m3_write(state, 0x30100120, 0x0820);
686 ret = s5c73m3_write(state, 0x30100124, 0x0820);
687
688 /* Offset Setting */
689 ret = s5c73m3_write(state, 0x00010418, 0x0008);
690
691 /* P,M,S and Boot Mode */
692 ret = s5c73m3_write(state, 0x30100014, 0x2146);
693 if (ret < 0)
694 return ret;
695 ret = s5c73m3_write(state, 0x30100010, 0x230c);
696 if (ret < 0)
697 return ret;
698
699 usleep_range(200, 250);
700
701 /* Check SPI status */
702 ret = s5c73m3_system_status_wait(state, 0x230e, 100, 300);
703 if (ret < 0)
704 v4l2_err(sd, "SPI not ready: %d\n", ret);
705
706 /* ARM reset */
707 ret = s5c73m3_write(state, 0x30000004, 0xfffd);
708 if (ret < 0)
709 return ret;
710
711 /* Remap */
712 ret = s5c73m3_write(state, 0x301000a4, 0x0183);
713 if (ret < 0)
714 return ret;
715
716 s5c73m3_set_timing_register_for_vdd(state);
717
718 ret = s5c73m3_read_fw_version(state);
719
720 s5c73m3_set_fw_file_version(state);
721
722 return ret;
723 }
724
725 static int s5c73m3_rom_boot(struct s5c73m3 *state, bool load_fw)
726 {
727 static const u32 boot_regs[][2] = {
728 { 0x3100010c, 0x0044 },
729 { 0x31000108, 0x000d },
730 { 0x31000304, 0x0001 },
731 { 0x00010000, 0x5800 },
732 { 0x00010002, 0x0002 },
733 { 0x31000000, 0x0001 },
734 { 0x30100014, 0x1b85 },
735 { 0x30100010, 0x230c }
736 };
737 struct v4l2_subdev *sd = &state->sensor_sd;
738 int i, ret;
739
740 /* Run ARM MCU */
741 ret = s5c73m3_write(state, 0x30000004, 0xffff);
742 if (ret < 0)
743 return ret;
744 usleep_range(400, 450);
745
746 /* Check booting status */
747 ret = s5c73m3_system_status_wait(state, 0x0c, 100, 4);
748 if (ret < 0) {
749 v4l2_err(sd, "Booting failed: %d\n", ret);
750 return ret;
751 }
752
753 for (i = 0; i < ARRAY_SIZE(boot_regs); i++) {
754 ret = s5c73m3_write(state, boot_regs[i][0], boot_regs[i][1]);
755 if (ret < 0)
756 return ret;
757 }
758 msleep(200);
759
760 /* Check the binary read status */
761 ret = s5c73m3_system_status_wait(state, 0x230e, 1000, 150);
762 if (ret < 0) {
763 v4l2_err(sd, "Binary read failed: %d\n", ret);
764 return ret;
765 }
766
767 /* ARM reset */
768 ret = s5c73m3_write(state, 0x30000004, 0xfffd);
769 if (ret < 0)
770 return ret;
771 /* Remap */
772 ret = s5c73m3_write(state, 0x301000a4, 0x0183);
773 if (ret < 0)
774 return ret;
775 /* MCU re-start */
776 ret = s5c73m3_write(state, 0x30000004, 0xffff);
777 if (ret < 0)
778 return ret;
779
780 state->isp_ready = 1;
781
782 return s5c73m3_read_fw_version(state);
783 }
784
785 static int s5c73m3_isp_init(struct s5c73m3 *state)
786 {
787 int ret;
788
789 state->i2c_read_address = 0;
790 state->i2c_write_address = 0;
791
792 ret = s5c73m3_i2c_write(state->i2c_client, AHB_MSB_ADDR_PTR, 0x3310);
793 if (ret < 0)
794 return ret;
795
796 if (boot_from_rom)
797 return s5c73m3_rom_boot(state, true);
798 else
799 return s5c73m3_spi_boot(state, true);
800 }
801
802 static const struct s5c73m3_frame_size *s5c73m3_find_frame_size(
803 struct v4l2_mbus_framefmt *fmt,
804 enum s5c73m3_resolution_types idx)
805 {
806 const struct s5c73m3_frame_size *fs;
807 const struct s5c73m3_frame_size *best_fs;
808 int best_dist = INT_MAX;
809 int i;
810
811 fs = s5c73m3_resolutions[idx];
812 best_fs = NULL;
813 for (i = 0; i < s5c73m3_resolutions_len[idx]; ++i) {
814 int dist = abs(fs->width - fmt->width) +
815 abs(fs->height - fmt->height);
816 if (dist < best_dist) {
817 best_dist = dist;
818 best_fs = fs;
819 }
820 ++fs;
821 }
822
823 return best_fs;
824 }
825
826 static void s5c73m3_oif_try_format(struct s5c73m3 *state,
827 struct v4l2_subdev_pad_config *cfg,
828 struct v4l2_subdev_format *fmt,
829 const struct s5c73m3_frame_size **fs)
830 {
831 struct v4l2_subdev *sd = &state->sensor_sd;
832 u32 code;
833
834 switch (fmt->pad) {
835 case OIF_ISP_PAD:
836 *fs = s5c73m3_find_frame_size(&fmt->format, RES_ISP);
837 code = S5C73M3_ISP_FMT;
838 break;
839 case OIF_JPEG_PAD:
840 *fs = s5c73m3_find_frame_size(&fmt->format, RES_JPEG);
841 code = S5C73M3_JPEG_FMT;
842 break;
843 case OIF_SOURCE_PAD:
844 default:
845 if (fmt->format.code == S5C73M3_JPEG_FMT)
846 code = S5C73M3_JPEG_FMT;
847 else
848 code = S5C73M3_ISP_FMT;
849
850 if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE)
851 *fs = state->oif_pix_size[RES_ISP];
852 else
853 *fs = s5c73m3_find_frame_size(
854 v4l2_subdev_get_try_format(sd, cfg,
855 OIF_ISP_PAD),
856 RES_ISP);
857 break;
858 }
859
860 s5c73m3_fill_mbus_fmt(&fmt->format, *fs, code);
861 }
862
863 static void s5c73m3_try_format(struct s5c73m3 *state,
864 struct v4l2_subdev_pad_config *cfg,
865 struct v4l2_subdev_format *fmt,
866 const struct s5c73m3_frame_size **fs)
867 {
868 u32 code;
869
870 if (fmt->pad == S5C73M3_ISP_PAD) {
871 *fs = s5c73m3_find_frame_size(&fmt->format, RES_ISP);
872 code = S5C73M3_ISP_FMT;
873 } else {
874 *fs = s5c73m3_find_frame_size(&fmt->format, RES_JPEG);
875 code = S5C73M3_JPEG_FMT;
876 }
877
878 s5c73m3_fill_mbus_fmt(&fmt->format, *fs, code);
879 }
880
881 static int s5c73m3_oif_g_frame_interval(struct v4l2_subdev *sd,
882 struct v4l2_subdev_frame_interval *fi)
883 {
884 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
885
886 if (fi->pad != OIF_SOURCE_PAD)
887 return -EINVAL;
888
889 mutex_lock(&state->lock);
890 fi->interval = state->fiv->interval;
891 mutex_unlock(&state->lock);
892
893 return 0;
894 }
895
896 static int __s5c73m3_set_frame_interval(struct s5c73m3 *state,
897 struct v4l2_subdev_frame_interval *fi)
898 {
899 const struct s5c73m3_frame_size *prev_size =
900 state->sensor_pix_size[RES_ISP];
901 const struct s5c73m3_interval *fiv = &s5c73m3_intervals[0];
902 unsigned int ret, min_err = UINT_MAX;
903 unsigned int i, fr_time;
904
905 if (fi->interval.denominator == 0)
906 return -EINVAL;
907
908 fr_time = fi->interval.numerator * 1000 / fi->interval.denominator;
909
910 for (i = 0; i < ARRAY_SIZE(s5c73m3_intervals); i++) {
911 const struct s5c73m3_interval *iv = &s5c73m3_intervals[i];
912
913 if (prev_size->width > iv->size.width ||
914 prev_size->height > iv->size.height)
915 continue;
916
917 ret = abs(iv->interval.numerator / 1000 - fr_time);
918 if (ret < min_err) {
919 fiv = iv;
920 min_err = ret;
921 }
922 }
923 state->fiv = fiv;
924
925 v4l2_dbg(1, s5c73m3_dbg, &state->sensor_sd,
926 "Changed frame interval to %u us\n", fiv->interval.numerator);
927 return 0;
928 }
929
930 static int s5c73m3_oif_s_frame_interval(struct v4l2_subdev *sd,
931 struct v4l2_subdev_frame_interval *fi)
932 {
933 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
934 int ret;
935
936 if (fi->pad != OIF_SOURCE_PAD)
937 return -EINVAL;
938
939 v4l2_dbg(1, s5c73m3_dbg, sd, "Setting %d/%d frame interval\n",
940 fi->interval.numerator, fi->interval.denominator);
941
942 mutex_lock(&state->lock);
943
944 ret = __s5c73m3_set_frame_interval(state, fi);
945 if (!ret) {
946 if (state->streaming)
947 ret = s5c73m3_set_frame_rate(state);
948 else
949 state->apply_fiv = 1;
950 }
951 mutex_unlock(&state->lock);
952 return ret;
953 }
954
955 static int s5c73m3_oif_enum_frame_interval(struct v4l2_subdev *sd,
956 struct v4l2_subdev_pad_config *cfg,
957 struct v4l2_subdev_frame_interval_enum *fie)
958 {
959 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
960 const struct s5c73m3_interval *fi;
961 int ret = 0;
962
963 if (fie->pad != OIF_SOURCE_PAD)
964 return -EINVAL;
965 if (fie->index >= ARRAY_SIZE(s5c73m3_intervals))
966 return -EINVAL;
967
968 mutex_lock(&state->lock);
969 fi = &s5c73m3_intervals[fie->index];
970 if (fie->width > fi->size.width || fie->height > fi->size.height)
971 ret = -EINVAL;
972 else
973 fie->interval = fi->interval;
974 mutex_unlock(&state->lock);
975
976 return ret;
977 }
978
979 static int s5c73m3_oif_get_pad_code(int pad, int index)
980 {
981 if (pad == OIF_SOURCE_PAD) {
982 if (index > 1)
983 return -EINVAL;
984 return (index == 0) ? S5C73M3_ISP_FMT : S5C73M3_JPEG_FMT;
985 }
986
987 if (index > 0)
988 return -EINVAL;
989
990 return (pad == OIF_ISP_PAD) ? S5C73M3_ISP_FMT : S5C73M3_JPEG_FMT;
991 }
992
993 static int s5c73m3_get_fmt(struct v4l2_subdev *sd,
994 struct v4l2_subdev_pad_config *cfg,
995 struct v4l2_subdev_format *fmt)
996 {
997 struct s5c73m3 *state = sensor_sd_to_s5c73m3(sd);
998 const struct s5c73m3_frame_size *fs;
999 u32 code;
1000
1001 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1002 fmt->format = *v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
1003 return 0;
1004 }
1005
1006 mutex_lock(&state->lock);
1007
1008 switch (fmt->pad) {
1009 case S5C73M3_ISP_PAD:
1010 code = S5C73M3_ISP_FMT;
1011 fs = state->sensor_pix_size[RES_ISP];
1012 break;
1013 case S5C73M3_JPEG_PAD:
1014 code = S5C73M3_JPEG_FMT;
1015 fs = state->sensor_pix_size[RES_JPEG];
1016 break;
1017 default:
1018 mutex_unlock(&state->lock);
1019 return -EINVAL;
1020 }
1021 s5c73m3_fill_mbus_fmt(&fmt->format, fs, code);
1022
1023 mutex_unlock(&state->lock);
1024 return 0;
1025 }
1026
1027 static int s5c73m3_oif_get_fmt(struct v4l2_subdev *sd,
1028 struct v4l2_subdev_pad_config *cfg,
1029 struct v4l2_subdev_format *fmt)
1030 {
1031 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
1032 const struct s5c73m3_frame_size *fs;
1033 u32 code;
1034
1035 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1036 fmt->format = *v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
1037 return 0;
1038 }
1039
1040 mutex_lock(&state->lock);
1041
1042 switch (fmt->pad) {
1043 case OIF_ISP_PAD:
1044 code = S5C73M3_ISP_FMT;
1045 fs = state->oif_pix_size[RES_ISP];
1046 break;
1047 case OIF_JPEG_PAD:
1048 code = S5C73M3_JPEG_FMT;
1049 fs = state->oif_pix_size[RES_JPEG];
1050 break;
1051 case OIF_SOURCE_PAD:
1052 code = state->mbus_code;
1053 fs = state->oif_pix_size[RES_ISP];
1054 break;
1055 default:
1056 mutex_unlock(&state->lock);
1057 return -EINVAL;
1058 }
1059 s5c73m3_fill_mbus_fmt(&fmt->format, fs, code);
1060
1061 mutex_unlock(&state->lock);
1062 return 0;
1063 }
1064
1065 static int s5c73m3_set_fmt(struct v4l2_subdev *sd,
1066 struct v4l2_subdev_pad_config *cfg,
1067 struct v4l2_subdev_format *fmt)
1068 {
1069 const struct s5c73m3_frame_size *frame_size = NULL;
1070 struct s5c73m3 *state = sensor_sd_to_s5c73m3(sd);
1071 struct v4l2_mbus_framefmt *mf;
1072 int ret = 0;
1073
1074 mutex_lock(&state->lock);
1075
1076 s5c73m3_try_format(state, cfg, fmt, &frame_size);
1077
1078 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1079 mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
1080 *mf = fmt->format;
1081 } else {
1082 switch (fmt->pad) {
1083 case S5C73M3_ISP_PAD:
1084 state->sensor_pix_size[RES_ISP] = frame_size;
1085 break;
1086 case S5C73M3_JPEG_PAD:
1087 state->sensor_pix_size[RES_JPEG] = frame_size;
1088 break;
1089 default:
1090 ret = -EBUSY;
1091 }
1092
1093 if (state->streaming)
1094 ret = -EBUSY;
1095 else
1096 state->apply_fmt = 1;
1097 }
1098
1099 mutex_unlock(&state->lock);
1100
1101 return ret;
1102 }
1103
1104 static int s5c73m3_oif_set_fmt(struct v4l2_subdev *sd,
1105 struct v4l2_subdev_pad_config *cfg,
1106 struct v4l2_subdev_format *fmt)
1107 {
1108 const struct s5c73m3_frame_size *frame_size = NULL;
1109 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
1110 struct v4l2_mbus_framefmt *mf;
1111 int ret = 0;
1112
1113 mutex_lock(&state->lock);
1114
1115 s5c73m3_oif_try_format(state, cfg, fmt, &frame_size);
1116
1117 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1118 mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
1119 *mf = fmt->format;
1120 if (fmt->pad == OIF_ISP_PAD) {
1121 mf = v4l2_subdev_get_try_format(sd, cfg, OIF_SOURCE_PAD);
1122 mf->width = fmt->format.width;
1123 mf->height = fmt->format.height;
1124 }
1125 } else {
1126 switch (fmt->pad) {
1127 case OIF_ISP_PAD:
1128 state->oif_pix_size[RES_ISP] = frame_size;
1129 break;
1130 case OIF_JPEG_PAD:
1131 state->oif_pix_size[RES_JPEG] = frame_size;
1132 break;
1133 case OIF_SOURCE_PAD:
1134 state->mbus_code = fmt->format.code;
1135 break;
1136 default:
1137 ret = -EBUSY;
1138 }
1139
1140 if (state->streaming)
1141 ret = -EBUSY;
1142 else
1143 state->apply_fmt = 1;
1144 }
1145
1146 mutex_unlock(&state->lock);
1147
1148 return ret;
1149 }
1150
1151 static int s5c73m3_oif_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
1152 struct v4l2_mbus_frame_desc *fd)
1153 {
1154 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
1155 int i;
1156
1157 if (pad != OIF_SOURCE_PAD || fd == NULL)
1158 return -EINVAL;
1159
1160 mutex_lock(&state->lock);
1161 fd->num_entries = 2;
1162 for (i = 0; i < fd->num_entries; i++)
1163 fd->entry[i] = state->frame_desc.entry[i];
1164 mutex_unlock(&state->lock);
1165
1166 return 0;
1167 }
1168
1169 static int s5c73m3_oif_set_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
1170 struct v4l2_mbus_frame_desc *fd)
1171 {
1172 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
1173 struct v4l2_mbus_frame_desc *frame_desc = &state->frame_desc;
1174 int i;
1175
1176 if (pad != OIF_SOURCE_PAD || fd == NULL)
1177 return -EINVAL;
1178
1179 fd->entry[0].length = 10 * SZ_1M;
1180 fd->entry[1].length = max_t(u32, fd->entry[1].length,
1181 S5C73M3_EMBEDDED_DATA_MAXLEN);
1182 fd->num_entries = 2;
1183
1184 mutex_lock(&state->lock);
1185 for (i = 0; i < fd->num_entries; i++)
1186 frame_desc->entry[i] = fd->entry[i];
1187 mutex_unlock(&state->lock);
1188
1189 return 0;
1190 }
1191
1192 static int s5c73m3_enum_mbus_code(struct v4l2_subdev *sd,
1193 struct v4l2_subdev_pad_config *cfg,
1194 struct v4l2_subdev_mbus_code_enum *code)
1195 {
1196 static const int codes[] = {
1197 [S5C73M3_ISP_PAD] = S5C73M3_ISP_FMT,
1198 [S5C73M3_JPEG_PAD] = S5C73M3_JPEG_FMT};
1199
1200 if (code->index > 0 || code->pad >= S5C73M3_NUM_PADS)
1201 return -EINVAL;
1202
1203 code->code = codes[code->pad];
1204
1205 return 0;
1206 }
1207
1208 static int s5c73m3_oif_enum_mbus_code(struct v4l2_subdev *sd,
1209 struct v4l2_subdev_pad_config *cfg,
1210 struct v4l2_subdev_mbus_code_enum *code)
1211 {
1212 int ret;
1213
1214 ret = s5c73m3_oif_get_pad_code(code->pad, code->index);
1215 if (ret < 0)
1216 return ret;
1217
1218 code->code = ret;
1219
1220 return 0;
1221 }
1222
1223 static int s5c73m3_enum_frame_size(struct v4l2_subdev *sd,
1224 struct v4l2_subdev_pad_config *cfg,
1225 struct v4l2_subdev_frame_size_enum *fse)
1226 {
1227 int idx;
1228
1229 if (fse->pad == S5C73M3_ISP_PAD) {
1230 if (fse->code != S5C73M3_ISP_FMT)
1231 return -EINVAL;
1232 idx = RES_ISP;
1233 } else{
1234 if (fse->code != S5C73M3_JPEG_FMT)
1235 return -EINVAL;
1236 idx = RES_JPEG;
1237 }
1238
1239 if (fse->index >= s5c73m3_resolutions_len[idx])
1240 return -EINVAL;
1241
1242 fse->min_width = s5c73m3_resolutions[idx][fse->index].width;
1243 fse->max_width = fse->min_width;
1244 fse->max_height = s5c73m3_resolutions[idx][fse->index].height;
1245 fse->min_height = fse->max_height;
1246
1247 return 0;
1248 }
1249
1250 static int s5c73m3_oif_enum_frame_size(struct v4l2_subdev *sd,
1251 struct v4l2_subdev_pad_config *cfg,
1252 struct v4l2_subdev_frame_size_enum *fse)
1253 {
1254 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
1255 int idx;
1256
1257 if (fse->pad == OIF_SOURCE_PAD) {
1258 if (fse->index > 0)
1259 return -EINVAL;
1260
1261 switch (fse->code) {
1262 case S5C73M3_JPEG_FMT:
1263 case S5C73M3_ISP_FMT: {
1264 unsigned w, h;
1265
1266 if (fse->which == V4L2_SUBDEV_FORMAT_TRY) {
1267 struct v4l2_mbus_framefmt *mf;
1268
1269 mf = v4l2_subdev_get_try_format(sd, cfg,
1270 OIF_ISP_PAD);
1271
1272 w = mf->width;
1273 h = mf->height;
1274 } else {
1275 const struct s5c73m3_frame_size *fs;
1276
1277 fs = state->oif_pix_size[RES_ISP];
1278 w = fs->width;
1279 h = fs->height;
1280 }
1281 fse->max_width = fse->min_width = w;
1282 fse->max_height = fse->min_height = h;
1283 return 0;
1284 }
1285 default:
1286 return -EINVAL;
1287 }
1288 }
1289
1290 if (fse->code != s5c73m3_oif_get_pad_code(fse->pad, 0))
1291 return -EINVAL;
1292
1293 if (fse->pad == OIF_JPEG_PAD)
1294 idx = RES_JPEG;
1295 else
1296 idx = RES_ISP;
1297
1298 if (fse->index >= s5c73m3_resolutions_len[idx])
1299 return -EINVAL;
1300
1301 fse->min_width = s5c73m3_resolutions[idx][fse->index].width;
1302 fse->max_width = fse->min_width;
1303 fse->max_height = s5c73m3_resolutions[idx][fse->index].height;
1304 fse->min_height = fse->max_height;
1305
1306 return 0;
1307 }
1308
1309 static int s5c73m3_oif_log_status(struct v4l2_subdev *sd)
1310 {
1311 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
1312
1313 v4l2_ctrl_handler_log_status(sd->ctrl_handler, sd->name);
1314
1315 v4l2_info(sd, "power: %d, apply_fmt: %d\n", state->power,
1316 state->apply_fmt);
1317
1318 return 0;
1319 }
1320
1321 static int s5c73m3_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
1322 {
1323 struct v4l2_mbus_framefmt *mf;
1324
1325 mf = v4l2_subdev_get_try_format(sd, fh->pad, S5C73M3_ISP_PAD);
1326 s5c73m3_fill_mbus_fmt(mf, &s5c73m3_isp_resolutions[1],
1327 S5C73M3_ISP_FMT);
1328
1329 mf = v4l2_subdev_get_try_format(sd, fh->pad, S5C73M3_JPEG_PAD);
1330 s5c73m3_fill_mbus_fmt(mf, &s5c73m3_jpeg_resolutions[1],
1331 S5C73M3_JPEG_FMT);
1332
1333 return 0;
1334 }
1335
1336 static int s5c73m3_oif_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
1337 {
1338 struct v4l2_mbus_framefmt *mf;
1339
1340 mf = v4l2_subdev_get_try_format(sd, fh->pad, OIF_ISP_PAD);
1341 s5c73m3_fill_mbus_fmt(mf, &s5c73m3_isp_resolutions[1],
1342 S5C73M3_ISP_FMT);
1343
1344 mf = v4l2_subdev_get_try_format(sd, fh->pad, OIF_JPEG_PAD);
1345 s5c73m3_fill_mbus_fmt(mf, &s5c73m3_jpeg_resolutions[1],
1346 S5C73M3_JPEG_FMT);
1347
1348 mf = v4l2_subdev_get_try_format(sd, fh->pad, OIF_SOURCE_PAD);
1349 s5c73m3_fill_mbus_fmt(mf, &s5c73m3_isp_resolutions[1],
1350 S5C73M3_ISP_FMT);
1351 return 0;
1352 }
1353
1354 static int s5c73m3_gpio_set_value(struct s5c73m3 *priv, int id, u32 val)
1355 {
1356 if (!gpio_is_valid(priv->gpio[id].gpio))
1357 return 0;
1358 gpio_set_value(priv->gpio[id].gpio, !!val);
1359 return 1;
1360 }
1361
1362 static int s5c73m3_gpio_assert(struct s5c73m3 *priv, int id)
1363 {
1364 return s5c73m3_gpio_set_value(priv, id, priv->gpio[id].level);
1365 }
1366
1367 static int s5c73m3_gpio_deassert(struct s5c73m3 *priv, int id)
1368 {
1369 return s5c73m3_gpio_set_value(priv, id, !priv->gpio[id].level);
1370 }
1371
1372 static int __s5c73m3_power_on(struct s5c73m3 *state)
1373 {
1374 int i, ret;
1375
1376 for (i = 0; i < S5C73M3_MAX_SUPPLIES; i++) {
1377 ret = regulator_enable(state->supplies[i].consumer);
1378 if (ret)
1379 goto err_reg_dis;
1380 }
1381
1382 ret = clk_set_rate(state->clock, state->mclk_frequency);
1383 if (ret < 0)
1384 goto err_reg_dis;
1385
1386 ret = clk_prepare_enable(state->clock);
1387 if (ret < 0)
1388 goto err_reg_dis;
1389
1390 v4l2_dbg(1, s5c73m3_dbg, &state->oif_sd, "clock frequency: %ld\n",
1391 clk_get_rate(state->clock));
1392
1393 s5c73m3_gpio_deassert(state, STBY);
1394 usleep_range(100, 200);
1395
1396 s5c73m3_gpio_deassert(state, RST);
1397 usleep_range(50, 100);
1398
1399 return 0;
1400
1401 err_reg_dis:
1402 for (--i; i >= 0; i--)
1403 regulator_disable(state->supplies[i].consumer);
1404 return ret;
1405 }
1406
1407 static int __s5c73m3_power_off(struct s5c73m3 *state)
1408 {
1409 int i, ret;
1410
1411 if (s5c73m3_gpio_assert(state, RST))
1412 usleep_range(10, 50);
1413
1414 if (s5c73m3_gpio_assert(state, STBY))
1415 usleep_range(100, 200);
1416
1417 clk_disable_unprepare(state->clock);
1418
1419 state->streaming = 0;
1420 state->isp_ready = 0;
1421
1422 for (i = S5C73M3_MAX_SUPPLIES - 1; i >= 0; i--) {
1423 ret = regulator_disable(state->supplies[i].consumer);
1424 if (ret)
1425 goto err;
1426 }
1427
1428 return 0;
1429 err:
1430 for (++i; i < S5C73M3_MAX_SUPPLIES; i++) {
1431 int r = regulator_enable(state->supplies[i].consumer);
1432 if (r < 0)
1433 v4l2_err(&state->oif_sd, "Failed to reenable %s: %d\n",
1434 state->supplies[i].supply, r);
1435 }
1436
1437 clk_prepare_enable(state->clock);
1438 return ret;
1439 }
1440
1441 static int s5c73m3_oif_set_power(struct v4l2_subdev *sd, int on)
1442 {
1443 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
1444 int ret = 0;
1445
1446 mutex_lock(&state->lock);
1447
1448 if (on && !state->power) {
1449 ret = __s5c73m3_power_on(state);
1450 if (!ret)
1451 ret = s5c73m3_isp_init(state);
1452 if (!ret) {
1453 state->apply_fiv = 1;
1454 state->apply_fmt = 1;
1455 }
1456 } else if (state->power == !on) {
1457 ret = s5c73m3_set_af_softlanding(state);
1458 if (!ret)
1459 ret = __s5c73m3_power_off(state);
1460 else
1461 v4l2_err(sd, "Soft landing lens failed\n");
1462 }
1463 if (!ret)
1464 state->power += on ? 1 : -1;
1465
1466 v4l2_dbg(1, s5c73m3_dbg, sd, "%s: power: %d\n",
1467 __func__, state->power);
1468
1469 mutex_unlock(&state->lock);
1470 return ret;
1471 }
1472
1473 static int s5c73m3_oif_registered(struct v4l2_subdev *sd)
1474 {
1475 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
1476 int ret;
1477
1478 ret = v4l2_device_register_subdev(sd->v4l2_dev, &state->sensor_sd);
1479 if (ret) {
1480 v4l2_err(sd->v4l2_dev, "Failed to register %s\n",
1481 state->oif_sd.name);
1482 return ret;
1483 }
1484
1485 ret = media_create_pad_link(&state->sensor_sd.entity,
1486 S5C73M3_ISP_PAD, &state->oif_sd.entity, OIF_ISP_PAD,
1487 MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED);
1488
1489 ret = media_create_pad_link(&state->sensor_sd.entity,
1490 S5C73M3_JPEG_PAD, &state->oif_sd.entity, OIF_JPEG_PAD,
1491 MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED);
1492
1493 return ret;
1494 }
1495
1496 static void s5c73m3_oif_unregistered(struct v4l2_subdev *sd)
1497 {
1498 struct s5c73m3 *state = oif_sd_to_s5c73m3(sd);
1499 v4l2_device_unregister_subdev(&state->sensor_sd);
1500 }
1501
1502 static const struct v4l2_subdev_internal_ops s5c73m3_internal_ops = {
1503 .open = s5c73m3_open,
1504 };
1505
1506 static const struct v4l2_subdev_pad_ops s5c73m3_pad_ops = {
1507 .enum_mbus_code = s5c73m3_enum_mbus_code,
1508 .enum_frame_size = s5c73m3_enum_frame_size,
1509 .get_fmt = s5c73m3_get_fmt,
1510 .set_fmt = s5c73m3_set_fmt,
1511 };
1512
1513 static const struct v4l2_subdev_ops s5c73m3_subdev_ops = {
1514 .pad = &s5c73m3_pad_ops,
1515 };
1516
1517 static const struct v4l2_subdev_internal_ops oif_internal_ops = {
1518 .registered = s5c73m3_oif_registered,
1519 .unregistered = s5c73m3_oif_unregistered,
1520 .open = s5c73m3_oif_open,
1521 };
1522
1523 static const struct v4l2_subdev_pad_ops s5c73m3_oif_pad_ops = {
1524 .enum_mbus_code = s5c73m3_oif_enum_mbus_code,
1525 .enum_frame_size = s5c73m3_oif_enum_frame_size,
1526 .enum_frame_interval = s5c73m3_oif_enum_frame_interval,
1527 .get_fmt = s5c73m3_oif_get_fmt,
1528 .set_fmt = s5c73m3_oif_set_fmt,
1529 .get_frame_desc = s5c73m3_oif_get_frame_desc,
1530 .set_frame_desc = s5c73m3_oif_set_frame_desc,
1531 };
1532
1533 static const struct v4l2_subdev_core_ops s5c73m3_oif_core_ops = {
1534 .s_power = s5c73m3_oif_set_power,
1535 .log_status = s5c73m3_oif_log_status,
1536 };
1537
1538 static const struct v4l2_subdev_video_ops s5c73m3_oif_video_ops = {
1539 .s_stream = s5c73m3_oif_s_stream,
1540 .g_frame_interval = s5c73m3_oif_g_frame_interval,
1541 .s_frame_interval = s5c73m3_oif_s_frame_interval,
1542 };
1543
1544 static const struct v4l2_subdev_ops oif_subdev_ops = {
1545 .core = &s5c73m3_oif_core_ops,
1546 .pad = &s5c73m3_oif_pad_ops,
1547 .video = &s5c73m3_oif_video_ops,
1548 };
1549
1550 static int s5c73m3_configure_gpios(struct s5c73m3 *state)
1551 {
1552 static const char * const gpio_names[] = {
1553 "S5C73M3_STBY", "S5C73M3_RST"
1554 };
1555 struct i2c_client *c = state->i2c_client;
1556 struct s5c73m3_gpio *g = state->gpio;
1557 int ret, i;
1558
1559 for (i = 0; i < GPIO_NUM; ++i) {
1560 unsigned int flags = GPIOF_DIR_OUT;
1561 if (g[i].level)
1562 flags |= GPIOF_INIT_HIGH;
1563 ret = devm_gpio_request_one(&c->dev, g[i].gpio, flags,
1564 gpio_names[i]);
1565 if (ret) {
1566 v4l2_err(c, "failed to request gpio %s\n",
1567 gpio_names[i]);
1568 return ret;
1569 }
1570 }
1571 return 0;
1572 }
1573
1574 static int s5c73m3_parse_gpios(struct s5c73m3 *state)
1575 {
1576 static const char * const prop_names[] = {
1577 "standby-gpios", "xshutdown-gpios",
1578 };
1579 struct device *dev = &state->i2c_client->dev;
1580 struct device_node *node = dev->of_node;
1581 int ret, i;
1582
1583 for (i = 0; i < GPIO_NUM; ++i) {
1584 enum of_gpio_flags of_flags;
1585
1586 ret = of_get_named_gpio_flags(node, prop_names[i],
1587 0, &of_flags);
1588 if (ret < 0) {
1589 dev_err(dev, "failed to parse %s DT property\n",
1590 prop_names[i]);
1591 return -EINVAL;
1592 }
1593 state->gpio[i].gpio = ret;
1594 state->gpio[i].level = !(of_flags & OF_GPIO_ACTIVE_LOW);
1595 }
1596 return 0;
1597 }
1598
1599 static int s5c73m3_get_platform_data(struct s5c73m3 *state)
1600 {
1601 struct device *dev = &state->i2c_client->dev;
1602 const struct s5c73m3_platform_data *pdata = dev->platform_data;
1603 struct device_node *node = dev->of_node;
1604 struct device_node *node_ep;
1605 struct v4l2_of_endpoint ep;
1606 int ret;
1607
1608 if (!node) {
1609 if (!pdata) {
1610 dev_err(dev, "Platform data not specified\n");
1611 return -EINVAL;
1612 }
1613
1614 state->mclk_frequency = pdata->mclk_frequency;
1615 state->gpio[STBY] = pdata->gpio_stby;
1616 state->gpio[RST] = pdata->gpio_reset;
1617 return 0;
1618 }
1619
1620 state->clock = devm_clk_get(dev, S5C73M3_CLK_NAME);
1621 if (IS_ERR(state->clock))
1622 return PTR_ERR(state->clock);
1623
1624 if (of_property_read_u32(node, "clock-frequency",
1625 &state->mclk_frequency)) {
1626 state->mclk_frequency = S5C73M3_DEFAULT_MCLK_FREQ;
1627 dev_info(dev, "using default %u Hz clock frequency\n",
1628 state->mclk_frequency);
1629 }
1630
1631 ret = s5c73m3_parse_gpios(state);
1632 if (ret < 0)
1633 return -EINVAL;
1634
1635 node_ep = of_graph_get_next_endpoint(node, NULL);
1636 if (!node_ep) {
1637 dev_warn(dev, "no endpoint defined for node: %s\n",
1638 node->full_name);
1639 return 0;
1640 }
1641
1642 v4l2_of_parse_endpoint(node_ep, &ep);
1643 of_node_put(node_ep);
1644
1645 if (ep.bus_type != V4L2_MBUS_CSI2) {
1646 dev_err(dev, "unsupported bus type\n");
1647 return -EINVAL;
1648 }
1649 /*
1650 * Number of MIPI CSI-2 data lanes is currently not configurable,
1651 * always a default value of 4 lanes is used.
1652 */
1653 if (ep.bus.mipi_csi2.num_data_lanes != S5C73M3_MIPI_DATA_LANES)
1654 dev_info(dev, "falling back to 4 MIPI CSI-2 data lanes\n");
1655
1656 return 0;
1657 }
1658
1659 static int s5c73m3_probe(struct i2c_client *client,
1660 const struct i2c_device_id *id)
1661 {
1662 struct device *dev = &client->dev;
1663 struct v4l2_subdev *sd;
1664 struct v4l2_subdev *oif_sd;
1665 struct s5c73m3 *state;
1666 int ret, i;
1667
1668 state = devm_kzalloc(dev, sizeof(*state), GFP_KERNEL);
1669 if (!state)
1670 return -ENOMEM;
1671
1672 state->i2c_client = client;
1673 ret = s5c73m3_get_platform_data(state);
1674 if (ret < 0)
1675 return ret;
1676
1677 mutex_init(&state->lock);
1678 sd = &state->sensor_sd;
1679 oif_sd = &state->oif_sd;
1680
1681 v4l2_subdev_init(sd, &s5c73m3_subdev_ops);
1682 sd->owner = client->dev.driver->owner;
1683 v4l2_set_subdevdata(sd, state);
1684 strlcpy(sd->name, "S5C73M3", sizeof(sd->name));
1685
1686 sd->internal_ops = &s5c73m3_internal_ops;
1687 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1688
1689 state->sensor_pads[S5C73M3_JPEG_PAD].flags = MEDIA_PAD_FL_SOURCE;
1690 state->sensor_pads[S5C73M3_ISP_PAD].flags = MEDIA_PAD_FL_SOURCE;
1691 sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
1692
1693 ret = media_entity_init(&sd->entity, S5C73M3_NUM_PADS,
1694 state->sensor_pads);
1695 if (ret < 0)
1696 return ret;
1697
1698 v4l2_i2c_subdev_init(oif_sd, client, &oif_subdev_ops);
1699 strcpy(oif_sd->name, "S5C73M3-OIF");
1700
1701 oif_sd->internal_ops = &oif_internal_ops;
1702 oif_sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1703
1704 state->oif_pads[OIF_ISP_PAD].flags = MEDIA_PAD_FL_SINK;
1705 state->oif_pads[OIF_JPEG_PAD].flags = MEDIA_PAD_FL_SINK;
1706 state->oif_pads[OIF_SOURCE_PAD].flags = MEDIA_PAD_FL_SOURCE;
1707 oif_sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN;
1708
1709 ret = media_entity_init(&oif_sd->entity, OIF_NUM_PADS,
1710 state->oif_pads);
1711 if (ret < 0)
1712 return ret;
1713
1714 ret = s5c73m3_configure_gpios(state);
1715 if (ret)
1716 goto out_err;
1717
1718 for (i = 0; i < S5C73M3_MAX_SUPPLIES; i++)
1719 state->supplies[i].supply = s5c73m3_supply_names[i];
1720
1721 ret = devm_regulator_bulk_get(dev, S5C73M3_MAX_SUPPLIES,
1722 state->supplies);
1723 if (ret) {
1724 dev_err(dev, "failed to get regulators\n");
1725 goto out_err;
1726 }
1727
1728 ret = s5c73m3_init_controls(state);
1729 if (ret)
1730 goto out_err;
1731
1732 state->sensor_pix_size[RES_ISP] = &s5c73m3_isp_resolutions[1];
1733 state->sensor_pix_size[RES_JPEG] = &s5c73m3_jpeg_resolutions[1];
1734 state->oif_pix_size[RES_ISP] = state->sensor_pix_size[RES_ISP];
1735 state->oif_pix_size[RES_JPEG] = state->sensor_pix_size[RES_JPEG];
1736
1737 state->mbus_code = S5C73M3_ISP_FMT;
1738
1739 state->fiv = &s5c73m3_intervals[S5C73M3_DEFAULT_FRAME_INTERVAL];
1740
1741 state->fw_file_version[0] = 'G';
1742 state->fw_file_version[1] = 'C';
1743
1744 ret = s5c73m3_register_spi_driver(state);
1745 if (ret < 0)
1746 goto out_err;
1747
1748 oif_sd->dev = dev;
1749
1750 ret = __s5c73m3_power_on(state);
1751 if (ret < 0)
1752 goto out_err1;
1753
1754 ret = s5c73m3_get_fw_version(state);
1755 __s5c73m3_power_off(state);
1756
1757 if (ret < 0) {
1758 dev_err(dev, "Device detection failed: %d\n", ret);
1759 goto out_err1;
1760 }
1761
1762 ret = v4l2_async_register_subdev(oif_sd);
1763 if (ret < 0)
1764 goto out_err1;
1765
1766 v4l2_info(sd, "%s: completed successfully\n", __func__);
1767 return 0;
1768
1769 out_err1:
1770 s5c73m3_unregister_spi_driver(state);
1771 out_err:
1772 media_entity_cleanup(&sd->entity);
1773 return ret;
1774 }
1775
1776 static int s5c73m3_remove(struct i2c_client *client)
1777 {
1778 struct v4l2_subdev *oif_sd = i2c_get_clientdata(client);
1779 struct s5c73m3 *state = oif_sd_to_s5c73m3(oif_sd);
1780 struct v4l2_subdev *sensor_sd = &state->sensor_sd;
1781
1782 v4l2_async_unregister_subdev(oif_sd);
1783
1784 v4l2_ctrl_handler_free(oif_sd->ctrl_handler);
1785 media_entity_cleanup(&oif_sd->entity);
1786
1787 v4l2_device_unregister_subdev(sensor_sd);
1788 media_entity_cleanup(&sensor_sd->entity);
1789
1790 s5c73m3_unregister_spi_driver(state);
1791
1792 return 0;
1793 }
1794
1795 static const struct i2c_device_id s5c73m3_id[] = {
1796 { DRIVER_NAME, 0 },
1797 { }
1798 };
1799 MODULE_DEVICE_TABLE(i2c, s5c73m3_id);
1800
1801 #ifdef CONFIG_OF
1802 static const struct of_device_id s5c73m3_of_match[] = {
1803 { .compatible = "samsung,s5c73m3" },
1804 { }
1805 };
1806 MODULE_DEVICE_TABLE(of, s5c73m3_of_match);
1807 #endif
1808
1809 static struct i2c_driver s5c73m3_i2c_driver = {
1810 .driver = {
1811 .of_match_table = of_match_ptr(s5c73m3_of_match),
1812 .name = DRIVER_NAME,
1813 },
1814 .probe = s5c73m3_probe,
1815 .remove = s5c73m3_remove,
1816 .id_table = s5c73m3_id,
1817 };
1818
1819 module_i2c_driver(s5c73m3_i2c_driver);
1820
1821 MODULE_DESCRIPTION("Samsung S5C73M3 camera driver");
1822 MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
1823 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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