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19#include <linux/i2c.h>
20#include <linux/delay.h>
21#include <linux/slab.h>
22#include <linux/module.h>
23#include <media/v4l2-device.h>
24#include <media/v4l2-subdev.h>
25#include <media/v4l2-mediabus.h>
26#include <media/v4l2-ctrls.h>
27#include <media/i2c/sr030pc30.h>
28
29static int debug;
30module_param(debug, int, 0644);
31
32#define MODULE_NAME "SR030PC30"
33
34
35
36
37
38#define POWER_CTRL_REG 0x0001
39#define PAGEMODE_REG 0x03
40#define DEVICE_ID_REG 0x0004
41#define NOON010PC30_ID 0x86
42#define SR030PC30_ID 0x8C
43#define VDO_CTL1_REG 0x0010
44#define SUBSAMPL_NONE_VGA 0
45#define SUBSAMPL_QVGA 0x10
46#define SUBSAMPL_QQVGA 0x20
47#define VDO_CTL2_REG 0x0011
48#define SYNC_CTL_REG 0x0012
49#define WIN_ROWH_REG 0x0020
50#define WIN_ROWL_REG 0x0021
51#define WIN_COLH_REG 0x0022
52#define WIN_COLL_REG 0x0023
53#define WIN_HEIGHTH_REG 0x0024
54#define WIN_HEIGHTL_REG 0x0025
55#define WIN_WIDTHH_REG 0x0026
56#define WIN_WIDTHL_REG 0x0027
57#define HBLANKH_REG 0x0040
58#define HBLANKL_REG 0x0041
59#define VSYNCH_REG 0x0042
60#define VSYNCL_REG 0x0043
61
62#define ISP_CTL_REG(n) (0x1010 + (n))
63#define YOFS_REG 0x1040
64#define DARK_YOFS_REG 0x1041
65#define AG_ABRTH_REG 0x1050
66#define SAT_CTL_REG 0x1060
67#define BSAT_REG 0x1061
68#define RSAT_REG 0x1062
69#define AG_SAT_TH_REG 0x1063
70
71#define ZLPF_CTRL_REG 0x1110
72#define ZLPF_CTRL2_REG 0x1112
73#define ZLPF_AGH_THR_REG 0x1121
74#define ZLPF_THR_REG 0x1160
75#define ZLPF_DYN_THR_REG 0x1160
76
77#define YCLPF_CTL1_REG 0x1240
78#define YCLPF_CTL2_REG 0x1241
79#define YCLPF_THR_REG 0x1250
80#define BLPF_CTL_REG 0x1270
81#define BLPF_THR1_REG 0x1274
82#define BLPF_THR2_REG 0x1275
83
84#define LENS_CTRL_REG 0x1410
85#define LENS_XCEN_REG 0x1420
86#define LENS_YCEN_REG 0x1421
87#define LENS_R_COMP_REG 0x1422
88#define LENS_G_COMP_REG 0x1423
89#define LENS_B_COMP_REG 0x1424
90
91#define CMC_CTL_REG 0x1510
92#define CMC_OFSGH_REG 0x1514
93#define CMC_OFSGL_REG 0x1516
94#define CMC_SIGN_REG 0x1517
95
96#define CMC_COEF_REG(n) (0x1530 + (n))
97
98#define CMC_OFS_REG(n) (0x1540 + (n))
99
100#define GMA_CTL_REG 0x1610
101
102#define GMA_COEF_REG(n) (0x1630 + (n))
103
104#define AE_CTL1_REG 0x2010
105#define AE_CTL2_REG 0x2011
106#define AE_FRM_CTL_REG 0x2020
107#define AE_FINE_CTL_REG(n) (0x2028 + (n))
108#define EXP_TIMEH_REG 0x2083
109#define EXP_TIMEM_REG 0x2084
110#define EXP_TIMEL_REG 0x2085
111#define EXP_MMINH_REG 0x2086
112#define EXP_MMINL_REG 0x2087
113#define EXP_MMAXH_REG 0x2088
114#define EXP_MMAXM_REG 0x2089
115#define EXP_MMAXL_REG 0x208A
116
117#define AWB_CTL1_REG 0x2210
118#define AWB_ENABLE 0x80
119#define AWB_CTL2_REG 0x2211
120#define MWB_ENABLE 0x01
121
122#define AWB_RGAIN_REG 0x2280
123#define AWB_GGAIN_REG 0x2281
124#define AWB_BGAIN_REG 0x2282
125#define AWB_RMAX_REG 0x2283
126#define AWB_RMIN_REG 0x2284
127#define AWB_BMAX_REG 0x2285
128#define AWB_BMIN_REG 0x2286
129
130#define AWB_RMAXB_REG 0x2287
131#define AWB_RMINB_REG 0x2288
132#define AWB_BMAXB_REG 0x2289
133#define AWB_BMINB_REG 0x228A
134
135#define MWB_RGAIN_REG 0x22B2
136#define MWB_BGAIN_REG 0x22B3
137
138#define REG_TERM 0xFFFF
139
140
141#define EXPOS_MIN_MS 1
142#define EXPOS_MAX_MS 125
143
144struct sr030pc30_info {
145 struct v4l2_subdev sd;
146 struct v4l2_ctrl_handler hdl;
147 const struct sr030pc30_platform_data *pdata;
148 const struct sr030pc30_format *curr_fmt;
149 const struct sr030pc30_frmsize *curr_win;
150 unsigned int hflip:1;
151 unsigned int vflip:1;
152 unsigned int sleep:1;
153 struct {
154
155 struct v4l2_ctrl *awb;
156 struct v4l2_ctrl *red;
157 struct v4l2_ctrl *blue;
158 };
159 struct {
160
161 struct v4l2_ctrl *autoexp;
162 struct v4l2_ctrl *exp;
163 };
164 u8 i2c_reg_page;
165};
166
167struct sr030pc30_format {
168 u32 code;
169 enum v4l2_colorspace colorspace;
170 u16 ispctl1_reg;
171};
172
173struct sr030pc30_frmsize {
174 u16 width;
175 u16 height;
176 int vid_ctl1;
177};
178
179struct i2c_regval {
180 u16 addr;
181 u16 val;
182};
183
184
185static const struct sr030pc30_frmsize sr030pc30_sizes[] = {
186 {
187 .width = 640,
188 .height = 480,
189 .vid_ctl1 = SUBSAMPL_NONE_VGA,
190 }, {
191 .width = 320,
192 .height = 240,
193 .vid_ctl1 = SUBSAMPL_QVGA,
194 }, {
195 .width = 160,
196 .height = 120,
197 .vid_ctl1 = SUBSAMPL_QQVGA,
198 },
199};
200
201
202static const struct sr030pc30_format sr030pc30_formats[] = {
203 {
204 .code = MEDIA_BUS_FMT_YUYV8_2X8,
205 .colorspace = V4L2_COLORSPACE_JPEG,
206 .ispctl1_reg = 0x03,
207 }, {
208 .code = MEDIA_BUS_FMT_YVYU8_2X8,
209 .colorspace = V4L2_COLORSPACE_JPEG,
210 .ispctl1_reg = 0x02,
211 }, {
212 .code = MEDIA_BUS_FMT_VYUY8_2X8,
213 .colorspace = V4L2_COLORSPACE_JPEG,
214 .ispctl1_reg = 0,
215 }, {
216 .code = MEDIA_BUS_FMT_UYVY8_2X8,
217 .colorspace = V4L2_COLORSPACE_JPEG,
218 .ispctl1_reg = 0x01,
219 }, {
220 .code = MEDIA_BUS_FMT_RGB565_2X8_BE,
221 .colorspace = V4L2_COLORSPACE_JPEG,
222 .ispctl1_reg = 0x40,
223 },
224};
225
226static const struct i2c_regval sr030pc30_base_regs[] = {
227
228 { WIN_ROWH_REG, 0x00 }, { WIN_ROWL_REG, 0x06 },
229 { WIN_COLH_REG, 0x00 }, { WIN_COLL_REG, 0x06 },
230 { WIN_HEIGHTH_REG, 0x01 }, { WIN_HEIGHTL_REG, 0xE0 },
231 { WIN_WIDTHH_REG, 0x02 }, { WIN_WIDTHL_REG, 0x80 },
232 { HBLANKH_REG, 0x01 }, { HBLANKL_REG, 0x50 },
233 { VSYNCH_REG, 0x00 }, { VSYNCL_REG, 0x14 },
234 { SYNC_CTL_REG, 0 },
235
236 { ISP_CTL_REG(0), 0x30 }, { YOFS_REG, 0x80 },
237 { DARK_YOFS_REG, 0x04 }, { AG_ABRTH_REG, 0x78 },
238 { SAT_CTL_REG, 0x1F }, { BSAT_REG, 0x90 },
239 { AG_SAT_TH_REG, 0xF0 }, { 0x1064, 0x80 },
240 { CMC_CTL_REG, 0x03 }, { CMC_OFSGH_REG, 0x3C },
241 { CMC_OFSGL_REG, 0x2C }, { CMC_SIGN_REG, 0x2F },
242 { CMC_COEF_REG(0), 0xCB }, { CMC_OFS_REG(0), 0x87 },
243 { CMC_COEF_REG(1), 0x61 }, { CMC_OFS_REG(1), 0x18 },
244 { CMC_COEF_REG(2), 0x16 }, { CMC_OFS_REG(2), 0x91 },
245 { CMC_COEF_REG(3), 0x23 }, { CMC_OFS_REG(3), 0x94 },
246 { CMC_COEF_REG(4), 0xCE }, { CMC_OFS_REG(4), 0x9f },
247 { CMC_COEF_REG(5), 0x2B }, { CMC_OFS_REG(5), 0x33 },
248 { CMC_COEF_REG(6), 0x01 }, { CMC_OFS_REG(6), 0x00 },
249 { CMC_COEF_REG(7), 0x34 }, { CMC_OFS_REG(7), 0x94 },
250 { CMC_COEF_REG(8), 0x75 }, { CMC_OFS_REG(8), 0x14 },
251
252 { GMA_CTL_REG, 0x03 }, { GMA_COEF_REG(0), 0x00 },
253 { GMA_COEF_REG(1), 0x19 }, { GMA_COEF_REG(2), 0x26 },
254 { GMA_COEF_REG(3), 0x3B }, { GMA_COEF_REG(4), 0x5D },
255 { GMA_COEF_REG(5), 0x79 }, { GMA_COEF_REG(6), 0x8E },
256 { GMA_COEF_REG(7), 0x9F }, { GMA_COEF_REG(8), 0xAF },
257 { GMA_COEF_REG(9), 0xBD }, { GMA_COEF_REG(10), 0xCA },
258 { GMA_COEF_REG(11), 0xDD }, { GMA_COEF_REG(12), 0xEC },
259 { GMA_COEF_REG(13), 0xF7 }, { GMA_COEF_REG(14), 0xFF },
260
261 { ZLPF_CTRL_REG, 0x99 }, { ZLPF_CTRL2_REG, 0x0E },
262 { ZLPF_AGH_THR_REG, 0x29 }, { ZLPF_THR_REG, 0x0F },
263 { ZLPF_DYN_THR_REG, 0x63 }, { YCLPF_CTL1_REG, 0x23 },
264 { YCLPF_CTL2_REG, 0x3B }, { YCLPF_THR_REG, 0x05 },
265 { BLPF_CTL_REG, 0x1D }, { BLPF_THR1_REG, 0x05 },
266 { BLPF_THR2_REG, 0x04 },
267
268 { AWB_CTL1_REG, 0xFB }, { AWB_CTL2_REG, 0x26 },
269 { AWB_RMAX_REG, 0x54 }, { AWB_RMIN_REG, 0x2B },
270 { AWB_BMAX_REG, 0x57 }, { AWB_BMIN_REG, 0x29 },
271 { AWB_RMAXB_REG, 0x50 }, { AWB_RMINB_REG, 0x43 },
272 { AWB_BMAXB_REG, 0x30 }, { AWB_BMINB_REG, 0x22 },
273
274 { AE_CTL1_REG, 0x8C }, { AE_CTL2_REG, 0x04 },
275 { AE_FRM_CTL_REG, 0x01 }, { AE_FINE_CTL_REG(0), 0x3F },
276 { AE_FINE_CTL_REG(1), 0xA3 }, { AE_FINE_CTL_REG(3), 0x34 },
277
278 { LENS_CTRL_REG, 0x01 }, { LENS_XCEN_REG, 0x80 },
279 { LENS_YCEN_REG, 0x70 }, { LENS_R_COMP_REG, 0x53 },
280 { LENS_G_COMP_REG, 0x40 }, { LENS_B_COMP_REG, 0x3e },
281 { REG_TERM, 0 },
282};
283
284static inline struct sr030pc30_info *to_sr030pc30(struct v4l2_subdev *sd)
285{
286 return container_of(sd, struct sr030pc30_info, sd);
287}
288
289static inline int set_i2c_page(struct sr030pc30_info *info,
290 struct i2c_client *client, unsigned int reg)
291{
292 int ret = 0;
293 u32 page = reg >> 8 & 0xFF;
294
295 if (info->i2c_reg_page != page && (reg & 0xFF) != 0x03) {
296 ret = i2c_smbus_write_byte_data(client, PAGEMODE_REG, page);
297 if (!ret)
298 info->i2c_reg_page = page;
299 }
300 return ret;
301}
302
303static int cam_i2c_read(struct v4l2_subdev *sd, u32 reg_addr)
304{
305 struct i2c_client *client = v4l2_get_subdevdata(sd);
306 struct sr030pc30_info *info = to_sr030pc30(sd);
307
308 int ret = set_i2c_page(info, client, reg_addr);
309 if (!ret)
310 ret = i2c_smbus_read_byte_data(client, reg_addr & 0xFF);
311 return ret;
312}
313
314static int cam_i2c_write(struct v4l2_subdev *sd, u32 reg_addr, u32 val)
315{
316 struct i2c_client *client = v4l2_get_subdevdata(sd);
317 struct sr030pc30_info *info = to_sr030pc30(sd);
318
319 int ret = set_i2c_page(info, client, reg_addr);
320 if (!ret)
321 ret = i2c_smbus_write_byte_data(
322 client, reg_addr & 0xFF, val);
323 return ret;
324}
325
326static inline int sr030pc30_bulk_write_reg(struct v4l2_subdev *sd,
327 const struct i2c_regval *msg)
328{
329 while (msg->addr != REG_TERM) {
330 int ret = cam_i2c_write(sd, msg->addr, msg->val);
331 if (ret)
332 return ret;
333 msg++;
334 }
335 return 0;
336}
337
338
339static int sr030pc30_pwr_ctrl(struct v4l2_subdev *sd,
340 bool reset, bool sleep)
341{
342 struct sr030pc30_info *info = to_sr030pc30(sd);
343 u8 reg = sleep ? 0xF1 : 0xF0;
344 int ret = 0;
345
346 if (reset)
347 ret = cam_i2c_write(sd, POWER_CTRL_REG, reg | 0x02);
348 if (!ret) {
349 ret = cam_i2c_write(sd, POWER_CTRL_REG, reg);
350 if (!ret) {
351 info->sleep = sleep;
352 if (reset)
353 info->i2c_reg_page = -1;
354 }
355 }
356 return ret;
357}
358
359static int sr030pc30_set_flip(struct v4l2_subdev *sd)
360{
361 struct sr030pc30_info *info = to_sr030pc30(sd);
362
363 s32 reg = cam_i2c_read(sd, VDO_CTL2_REG);
364 if (reg < 0)
365 return reg;
366
367 reg &= 0x7C;
368 if (info->hflip)
369 reg |= 0x01;
370 if (info->vflip)
371 reg |= 0x02;
372 return cam_i2c_write(sd, VDO_CTL2_REG, reg | 0x80);
373}
374
375
376static int sr030pc30_set_params(struct v4l2_subdev *sd)
377{
378 struct sr030pc30_info *info = to_sr030pc30(sd);
379 int ret;
380
381 if (!info->curr_win)
382 return -EINVAL;
383
384
385 ret = cam_i2c_write(sd, VDO_CTL1_REG,
386 info->curr_win->vid_ctl1);
387
388 if (!ret && info->curr_fmt)
389 ret = cam_i2c_write(sd, ISP_CTL_REG(0),
390 info->curr_fmt->ispctl1_reg);
391 if (!ret)
392 ret = sr030pc30_set_flip(sd);
393
394 return ret;
395}
396
397
398static int sr030pc30_try_frame_size(struct v4l2_mbus_framefmt *mf)
399{
400 unsigned int min_err = ~0;
401 int i = ARRAY_SIZE(sr030pc30_sizes);
402 const struct sr030pc30_frmsize *fsize = &sr030pc30_sizes[0],
403 *match = NULL;
404 while (i--) {
405 int err = abs(fsize->width - mf->width)
406 + abs(fsize->height - mf->height);
407 if (err < min_err) {
408 min_err = err;
409 match = fsize;
410 }
411 fsize++;
412 }
413 if (match) {
414 mf->width = match->width;
415 mf->height = match->height;
416 return 0;
417 }
418 return -EINVAL;
419}
420
421static int sr030pc30_s_ctrl(struct v4l2_ctrl *ctrl)
422{
423 struct sr030pc30_info *info =
424 container_of(ctrl->handler, struct sr030pc30_info, hdl);
425 struct v4l2_subdev *sd = &info->sd;
426 int ret = 0;
427
428 v4l2_dbg(1, debug, sd, "%s: ctrl_id: %d, value: %d\n",
429 __func__, ctrl->id, ctrl->val);
430
431 switch (ctrl->id) {
432 case V4L2_CID_AUTO_WHITE_BALANCE:
433 if (ctrl->is_new) {
434 ret = cam_i2c_write(sd, AWB_CTL2_REG,
435 ctrl->val ? 0x2E : 0x2F);
436 if (!ret)
437 ret = cam_i2c_write(sd, AWB_CTL1_REG,
438 ctrl->val ? 0xFB : 0x7B);
439 }
440 if (!ret && info->blue->is_new)
441 ret = cam_i2c_write(sd, MWB_BGAIN_REG, info->blue->val);
442 if (!ret && info->red->is_new)
443 ret = cam_i2c_write(sd, MWB_RGAIN_REG, info->red->val);
444 return ret;
445
446 case V4L2_CID_EXPOSURE_AUTO:
447
448 if (ctrl->is_new)
449 ret = cam_i2c_write(sd, AE_CTL1_REG,
450 ctrl->val == V4L2_EXPOSURE_AUTO ? 0xDC : 0x0C);
451 if (info->exp->is_new) {
452 unsigned long expos = info->exp->val;
453
454 expos = expos * info->pdata->clk_rate / (8 * 1000);
455
456 if (!ret)
457 ret = cam_i2c_write(sd, EXP_TIMEH_REG,
458 expos >> 16 & 0xFF);
459 if (!ret)
460 ret = cam_i2c_write(sd, EXP_TIMEM_REG,
461 expos >> 8 & 0xFF);
462 if (!ret)
463 ret = cam_i2c_write(sd, EXP_TIMEL_REG,
464 expos & 0xFF);
465 }
466 return ret;
467 default:
468 return -EINVAL;
469 }
470
471 return 0;
472}
473
474static int sr030pc30_enum_mbus_code(struct v4l2_subdev *sd,
475 struct v4l2_subdev_pad_config *cfg,
476 struct v4l2_subdev_mbus_code_enum *code)
477{
478 if (!code || code->pad ||
479 code->index >= ARRAY_SIZE(sr030pc30_formats))
480 return -EINVAL;
481
482 code->code = sr030pc30_formats[code->index].code;
483 return 0;
484}
485
486static int sr030pc30_get_fmt(struct v4l2_subdev *sd,
487 struct v4l2_subdev_pad_config *cfg,
488 struct v4l2_subdev_format *format)
489{
490 struct v4l2_mbus_framefmt *mf;
491 struct sr030pc30_info *info = to_sr030pc30(sd);
492
493 if (!format || format->pad)
494 return -EINVAL;
495
496 mf = &format->format;
497
498 if (!info->curr_win || !info->curr_fmt)
499 return -EINVAL;
500
501 mf->width = info->curr_win->width;
502 mf->height = info->curr_win->height;
503 mf->code = info->curr_fmt->code;
504 mf->colorspace = info->curr_fmt->colorspace;
505 mf->field = V4L2_FIELD_NONE;
506
507 return 0;
508}
509
510
511static const struct sr030pc30_format *try_fmt(struct v4l2_subdev *sd,
512 struct v4l2_mbus_framefmt *mf)
513{
514 int i;
515
516 sr030pc30_try_frame_size(mf);
517
518 for (i = 0; i < ARRAY_SIZE(sr030pc30_formats); i++) {
519 if (mf->code == sr030pc30_formats[i].code)
520 break;
521 }
522 if (i == ARRAY_SIZE(sr030pc30_formats))
523 i = 0;
524
525 mf->code = sr030pc30_formats[i].code;
526
527 return &sr030pc30_formats[i];
528}
529
530
531static int sr030pc30_set_fmt(struct v4l2_subdev *sd,
532 struct v4l2_subdev_pad_config *cfg,
533 struct v4l2_subdev_format *format)
534{
535 struct sr030pc30_info *info = sd ? to_sr030pc30(sd) : NULL;
536 const struct sr030pc30_format *fmt;
537 struct v4l2_mbus_framefmt *mf;
538
539 if (!sd || !format)
540 return -EINVAL;
541
542 mf = &format->format;
543 if (format->pad)
544 return -EINVAL;
545
546 fmt = try_fmt(sd, mf);
547 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
548 cfg->try_fmt = *mf;
549 return 0;
550 }
551
552 info->curr_fmt = fmt;
553
554 return sr030pc30_set_params(sd);
555}
556
557static int sr030pc30_base_config(struct v4l2_subdev *sd)
558{
559 struct sr030pc30_info *info = to_sr030pc30(sd);
560 int ret;
561 unsigned long expmin, expmax;
562
563 ret = sr030pc30_bulk_write_reg(sd, sr030pc30_base_regs);
564 if (!ret) {
565 info->curr_fmt = &sr030pc30_formats[0];
566 info->curr_win = &sr030pc30_sizes[0];
567 ret = sr030pc30_set_params(sd);
568 }
569 if (!ret)
570 ret = sr030pc30_pwr_ctrl(sd, false, false);
571
572 if (!ret && !info->pdata)
573 return ret;
574
575 expmin = EXPOS_MIN_MS * info->pdata->clk_rate / (8 * 1000);
576 expmax = EXPOS_MAX_MS * info->pdata->clk_rate / (8 * 1000);
577
578 v4l2_dbg(1, debug, sd, "%s: expmin= %lx, expmax= %lx", __func__,
579 expmin, expmax);
580
581
582 ret = cam_i2c_write(sd, EXP_MMINH_REG, expmin >> 8 & 0xFF);
583 if (!ret)
584 ret = cam_i2c_write(sd, EXP_MMINL_REG, expmin & 0xFF);
585 if (!ret)
586 ret = cam_i2c_write(sd, EXP_MMAXH_REG, expmax >> 16 & 0xFF);
587 if (!ret)
588 ret = cam_i2c_write(sd, EXP_MMAXM_REG, expmax >> 8 & 0xFF);
589 if (!ret)
590 ret = cam_i2c_write(sd, EXP_MMAXL_REG, expmax & 0xFF);
591
592 return ret;
593}
594
595static int sr030pc30_s_power(struct v4l2_subdev *sd, int on)
596{
597 struct i2c_client *client = v4l2_get_subdevdata(sd);
598 struct sr030pc30_info *info = to_sr030pc30(sd);
599 const struct sr030pc30_platform_data *pdata = info->pdata;
600 int ret;
601
602 if (pdata == NULL) {
603 WARN(1, "No platform data!\n");
604 return -EINVAL;
605 }
606
607
608
609
610
611 if (!on)
612 sr030pc30_pwr_ctrl(sd, false, true);
613
614
615 if (pdata->set_power) {
616 ret = pdata->set_power(&client->dev, on);
617 if (ret)
618 return ret;
619 }
620
621 if (on) {
622 ret = sr030pc30_base_config(sd);
623 } else {
624 ret = 0;
625 info->curr_win = NULL;
626 info->curr_fmt = NULL;
627 }
628
629 return ret;
630}
631
632static const struct v4l2_ctrl_ops sr030pc30_ctrl_ops = {
633 .s_ctrl = sr030pc30_s_ctrl,
634};
635
636static const struct v4l2_subdev_core_ops sr030pc30_core_ops = {
637 .s_power = sr030pc30_s_power,
638};
639
640static const struct v4l2_subdev_pad_ops sr030pc30_pad_ops = {
641 .enum_mbus_code = sr030pc30_enum_mbus_code,
642 .get_fmt = sr030pc30_get_fmt,
643 .set_fmt = sr030pc30_set_fmt,
644};
645
646static const struct v4l2_subdev_ops sr030pc30_ops = {
647 .core = &sr030pc30_core_ops,
648 .pad = &sr030pc30_pad_ops,
649};
650
651
652
653
654
655static int sr030pc30_detect(struct i2c_client *client)
656{
657 const struct sr030pc30_platform_data *pdata
658 = client->dev.platform_data;
659 int ret;
660
661
662 if (pdata->set_power) {
663 ret = pdata->set_power(&client->dev, 1);
664 if (ret)
665 return ret;
666 }
667
668 ret = i2c_smbus_read_byte_data(client, DEVICE_ID_REG);
669
670 if (pdata->set_power)
671 pdata->set_power(&client->dev, 0);
672
673 if (ret < 0) {
674 dev_err(&client->dev, "%s: I2C read failed\n", __func__);
675 return ret;
676 }
677
678 return ret == SR030PC30_ID ? 0 : -ENODEV;
679}
680
681
682static int sr030pc30_probe(struct i2c_client *client,
683 const struct i2c_device_id *id)
684{
685 struct sr030pc30_info *info;
686 struct v4l2_subdev *sd;
687 struct v4l2_ctrl_handler *hdl;
688 const struct sr030pc30_platform_data *pdata
689 = client->dev.platform_data;
690 int ret;
691
692 if (!pdata) {
693 dev_err(&client->dev, "No platform data!");
694 return -EIO;
695 }
696
697 ret = sr030pc30_detect(client);
698 if (ret)
699 return ret;
700
701 info = devm_kzalloc(&client->dev, sizeof(*info), GFP_KERNEL);
702 if (!info)
703 return -ENOMEM;
704
705 sd = &info->sd;
706 strcpy(sd->name, MODULE_NAME);
707 info->pdata = client->dev.platform_data;
708
709 v4l2_i2c_subdev_init(sd, client, &sr030pc30_ops);
710
711 hdl = &info->hdl;
712 v4l2_ctrl_handler_init(hdl, 6);
713 info->awb = v4l2_ctrl_new_std(hdl, &sr030pc30_ctrl_ops,
714 V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
715 info->red = v4l2_ctrl_new_std(hdl, &sr030pc30_ctrl_ops,
716 V4L2_CID_RED_BALANCE, 0, 127, 1, 64);
717 info->blue = v4l2_ctrl_new_std(hdl, &sr030pc30_ctrl_ops,
718 V4L2_CID_BLUE_BALANCE, 0, 127, 1, 64);
719 info->autoexp = v4l2_ctrl_new_std(hdl, &sr030pc30_ctrl_ops,
720 V4L2_CID_EXPOSURE_AUTO, 0, 1, 1, 1);
721 info->exp = v4l2_ctrl_new_std(hdl, &sr030pc30_ctrl_ops,
722 V4L2_CID_EXPOSURE, EXPOS_MIN_MS, EXPOS_MAX_MS, 1, 30);
723 sd->ctrl_handler = hdl;
724 if (hdl->error) {
725 int err = hdl->error;
726
727 v4l2_ctrl_handler_free(hdl);
728 return err;
729 }
730 v4l2_ctrl_auto_cluster(3, &info->awb, 0, false);
731 v4l2_ctrl_auto_cluster(2, &info->autoexp, V4L2_EXPOSURE_MANUAL, false);
732 v4l2_ctrl_handler_setup(hdl);
733
734 info->i2c_reg_page = -1;
735 info->hflip = 1;
736
737 return 0;
738}
739
740static int sr030pc30_remove(struct i2c_client *client)
741{
742 struct v4l2_subdev *sd = i2c_get_clientdata(client);
743
744 v4l2_device_unregister_subdev(sd);
745 v4l2_ctrl_handler_free(sd->ctrl_handler);
746 return 0;
747}
748
749static const struct i2c_device_id sr030pc30_id[] = {
750 { MODULE_NAME, 0 },
751 { },
752};
753MODULE_DEVICE_TABLE(i2c, sr030pc30_id);
754
755
756static struct i2c_driver sr030pc30_i2c_driver = {
757 .driver = {
758 .name = MODULE_NAME
759 },
760 .probe = sr030pc30_probe,
761 .remove = sr030pc30_remove,
762 .id_table = sr030pc30_id,
763};
764
765module_i2c_driver(sr030pc30_i2c_driver);
766
767MODULE_DESCRIPTION("Siliconfile SR030PC30 camera driver");
768MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
769MODULE_LICENSE("GPL");
770
