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15#include <linux/i2c.h>
16#include <linux/delay.h>
17#include <linux/slab.h>
18#include <linux/module.h>
19#include <media/v4l2-device.h>
20#include <media/v4l2-subdev.h>
21#include <media/v4l2-mediabus.h>
22#include <media/v4l2-ctrls.h>
23#include <media/i2c/sr030pc30.h>
24
25static int debug;
26module_param(debug, int, 0644);
27
28#define MODULE_NAME "SR030PC30"
29
30
31
32
33
34#define POWER_CTRL_REG 0x0001
35#define PAGEMODE_REG 0x03
36#define DEVICE_ID_REG 0x0004
37#define NOON010PC30_ID 0x86
38#define SR030PC30_ID 0x8C
39#define VDO_CTL1_REG 0x0010
40#define SUBSAMPL_NONE_VGA 0
41#define SUBSAMPL_QVGA 0x10
42#define SUBSAMPL_QQVGA 0x20
43#define VDO_CTL2_REG 0x0011
44#define SYNC_CTL_REG 0x0012
45#define WIN_ROWH_REG 0x0020
46#define WIN_ROWL_REG 0x0021
47#define WIN_COLH_REG 0x0022
48#define WIN_COLL_REG 0x0023
49#define WIN_HEIGHTH_REG 0x0024
50#define WIN_HEIGHTL_REG 0x0025
51#define WIN_WIDTHH_REG 0x0026
52#define WIN_WIDTHL_REG 0x0027
53#define HBLANKH_REG 0x0040
54#define HBLANKL_REG 0x0041
55#define VSYNCH_REG 0x0042
56#define VSYNCL_REG 0x0043
57
58#define ISP_CTL_REG(n) (0x1010 + (n))
59#define YOFS_REG 0x1040
60#define DARK_YOFS_REG 0x1041
61#define AG_ABRTH_REG 0x1050
62#define SAT_CTL_REG 0x1060
63#define BSAT_REG 0x1061
64#define RSAT_REG 0x1062
65#define AG_SAT_TH_REG 0x1063
66
67#define ZLPF_CTRL_REG 0x1110
68#define ZLPF_CTRL2_REG 0x1112
69#define ZLPF_AGH_THR_REG 0x1121
70#define ZLPF_THR_REG 0x1160
71#define ZLPF_DYN_THR_REG 0x1160
72
73#define YCLPF_CTL1_REG 0x1240
74#define YCLPF_CTL2_REG 0x1241
75#define YCLPF_THR_REG 0x1250
76#define BLPF_CTL_REG 0x1270
77#define BLPF_THR1_REG 0x1274
78#define BLPF_THR2_REG 0x1275
79
80#define LENS_CTRL_REG 0x1410
81#define LENS_XCEN_REG 0x1420
82#define LENS_YCEN_REG 0x1421
83#define LENS_R_COMP_REG 0x1422
84#define LENS_G_COMP_REG 0x1423
85#define LENS_B_COMP_REG 0x1424
86
87#define CMC_CTL_REG 0x1510
88#define CMC_OFSGH_REG 0x1514
89#define CMC_OFSGL_REG 0x1516
90#define CMC_SIGN_REG 0x1517
91
92#define CMC_COEF_REG(n) (0x1530 + (n))
93
94#define CMC_OFS_REG(n) (0x1540 + (n))
95
96#define GMA_CTL_REG 0x1610
97
98#define GMA_COEF_REG(n) (0x1630 + (n))
99
100#define AE_CTL1_REG 0x2010
101#define AE_CTL2_REG 0x2011
102#define AE_FRM_CTL_REG 0x2020
103#define AE_FINE_CTL_REG(n) (0x2028 + (n))
104#define EXP_TIMEH_REG 0x2083
105#define EXP_TIMEM_REG 0x2084
106#define EXP_TIMEL_REG 0x2085
107#define EXP_MMINH_REG 0x2086
108#define EXP_MMINL_REG 0x2087
109#define EXP_MMAXH_REG 0x2088
110#define EXP_MMAXM_REG 0x2089
111#define EXP_MMAXL_REG 0x208A
112
113#define AWB_CTL1_REG 0x2210
114#define AWB_ENABLE 0x80
115#define AWB_CTL2_REG 0x2211
116#define MWB_ENABLE 0x01
117
118#define AWB_RGAIN_REG 0x2280
119#define AWB_GGAIN_REG 0x2281
120#define AWB_BGAIN_REG 0x2282
121#define AWB_RMAX_REG 0x2283
122#define AWB_RMIN_REG 0x2284
123#define AWB_BMAX_REG 0x2285
124#define AWB_BMIN_REG 0x2286
125
126#define AWB_RMAXB_REG 0x2287
127#define AWB_RMINB_REG 0x2288
128#define AWB_BMAXB_REG 0x2289
129#define AWB_BMINB_REG 0x228A
130
131#define MWB_RGAIN_REG 0x22B2
132#define MWB_BGAIN_REG 0x22B3
133
134#define REG_TERM 0xFFFF
135
136
137#define EXPOS_MIN_MS 1
138#define EXPOS_MAX_MS 125
139
140struct sr030pc30_info {
141 struct v4l2_subdev sd;
142 struct v4l2_ctrl_handler hdl;
143 const struct sr030pc30_platform_data *pdata;
144 const struct sr030pc30_format *curr_fmt;
145 const struct sr030pc30_frmsize *curr_win;
146 unsigned int hflip:1;
147 unsigned int vflip:1;
148 unsigned int sleep:1;
149 struct {
150
151 struct v4l2_ctrl *awb;
152 struct v4l2_ctrl *red;
153 struct v4l2_ctrl *blue;
154 };
155 struct {
156
157 struct v4l2_ctrl *autoexp;
158 struct v4l2_ctrl *exp;
159 };
160 u8 i2c_reg_page;
161};
162
163struct sr030pc30_format {
164 u32 code;
165 enum v4l2_colorspace colorspace;
166 u16 ispctl1_reg;
167};
168
169struct sr030pc30_frmsize {
170 u16 width;
171 u16 height;
172 int vid_ctl1;
173};
174
175struct i2c_regval {
176 u16 addr;
177 u16 val;
178};
179
180
181static const struct sr030pc30_frmsize sr030pc30_sizes[] = {
182 {
183 .width = 640,
184 .height = 480,
185 .vid_ctl1 = SUBSAMPL_NONE_VGA,
186 }, {
187 .width = 320,
188 .height = 240,
189 .vid_ctl1 = SUBSAMPL_QVGA,
190 }, {
191 .width = 160,
192 .height = 120,
193 .vid_ctl1 = SUBSAMPL_QQVGA,
194 },
195};
196
197
198static const struct sr030pc30_format sr030pc30_formats[] = {
199 {
200 .code = MEDIA_BUS_FMT_YUYV8_2X8,
201 .colorspace = V4L2_COLORSPACE_JPEG,
202 .ispctl1_reg = 0x03,
203 }, {
204 .code = MEDIA_BUS_FMT_YVYU8_2X8,
205 .colorspace = V4L2_COLORSPACE_JPEG,
206 .ispctl1_reg = 0x02,
207 }, {
208 .code = MEDIA_BUS_FMT_VYUY8_2X8,
209 .colorspace = V4L2_COLORSPACE_JPEG,
210 .ispctl1_reg = 0,
211 }, {
212 .code = MEDIA_BUS_FMT_UYVY8_2X8,
213 .colorspace = V4L2_COLORSPACE_JPEG,
214 .ispctl1_reg = 0x01,
215 }, {
216 .code = MEDIA_BUS_FMT_RGB565_2X8_BE,
217 .colorspace = V4L2_COLORSPACE_JPEG,
218 .ispctl1_reg = 0x40,
219 },
220};
221
222static const struct i2c_regval sr030pc30_base_regs[] = {
223
224 { WIN_ROWH_REG, 0x00 }, { WIN_ROWL_REG, 0x06 },
225 { WIN_COLH_REG, 0x00 }, { WIN_COLL_REG, 0x06 },
226 { WIN_HEIGHTH_REG, 0x01 }, { WIN_HEIGHTL_REG, 0xE0 },
227 { WIN_WIDTHH_REG, 0x02 }, { WIN_WIDTHL_REG, 0x80 },
228 { HBLANKH_REG, 0x01 }, { HBLANKL_REG, 0x50 },
229 { VSYNCH_REG, 0x00 }, { VSYNCL_REG, 0x14 },
230 { SYNC_CTL_REG, 0 },
231
232 { ISP_CTL_REG(0), 0x30 }, { YOFS_REG, 0x80 },
233 { DARK_YOFS_REG, 0x04 }, { AG_ABRTH_REG, 0x78 },
234 { SAT_CTL_REG, 0x1F }, { BSAT_REG, 0x90 },
235 { AG_SAT_TH_REG, 0xF0 }, { 0x1064, 0x80 },
236 { CMC_CTL_REG, 0x03 }, { CMC_OFSGH_REG, 0x3C },
237 { CMC_OFSGL_REG, 0x2C }, { CMC_SIGN_REG, 0x2F },
238 { CMC_COEF_REG(0), 0xCB }, { CMC_OFS_REG(0), 0x87 },
239 { CMC_COEF_REG(1), 0x61 }, { CMC_OFS_REG(1), 0x18 },
240 { CMC_COEF_REG(2), 0x16 }, { CMC_OFS_REG(2), 0x91 },
241 { CMC_COEF_REG(3), 0x23 }, { CMC_OFS_REG(3), 0x94 },
242 { CMC_COEF_REG(4), 0xCE }, { CMC_OFS_REG(4), 0x9f },
243 { CMC_COEF_REG(5), 0x2B }, { CMC_OFS_REG(5), 0x33 },
244 { CMC_COEF_REG(6), 0x01 }, { CMC_OFS_REG(6), 0x00 },
245 { CMC_COEF_REG(7), 0x34 }, { CMC_OFS_REG(7), 0x94 },
246 { CMC_COEF_REG(8), 0x75 }, { CMC_OFS_REG(8), 0x14 },
247
248 { GMA_CTL_REG, 0x03 }, { GMA_COEF_REG(0), 0x00 },
249 { GMA_COEF_REG(1), 0x19 }, { GMA_COEF_REG(2), 0x26 },
250 { GMA_COEF_REG(3), 0x3B }, { GMA_COEF_REG(4), 0x5D },
251 { GMA_COEF_REG(5), 0x79 }, { GMA_COEF_REG(6), 0x8E },
252 { GMA_COEF_REG(7), 0x9F }, { GMA_COEF_REG(8), 0xAF },
253 { GMA_COEF_REG(9), 0xBD }, { GMA_COEF_REG(10), 0xCA },
254 { GMA_COEF_REG(11), 0xDD }, { GMA_COEF_REG(12), 0xEC },
255 { GMA_COEF_REG(13), 0xF7 }, { GMA_COEF_REG(14), 0xFF },
256
257 { ZLPF_CTRL_REG, 0x99 }, { ZLPF_CTRL2_REG, 0x0E },
258 { ZLPF_AGH_THR_REG, 0x29 }, { ZLPF_THR_REG, 0x0F },
259 { ZLPF_DYN_THR_REG, 0x63 }, { YCLPF_CTL1_REG, 0x23 },
260 { YCLPF_CTL2_REG, 0x3B }, { YCLPF_THR_REG, 0x05 },
261 { BLPF_CTL_REG, 0x1D }, { BLPF_THR1_REG, 0x05 },
262 { BLPF_THR2_REG, 0x04 },
263
264 { AWB_CTL1_REG, 0xFB }, { AWB_CTL2_REG, 0x26 },
265 { AWB_RMAX_REG, 0x54 }, { AWB_RMIN_REG, 0x2B },
266 { AWB_BMAX_REG, 0x57 }, { AWB_BMIN_REG, 0x29 },
267 { AWB_RMAXB_REG, 0x50 }, { AWB_RMINB_REG, 0x43 },
268 { AWB_BMAXB_REG, 0x30 }, { AWB_BMINB_REG, 0x22 },
269
270 { AE_CTL1_REG, 0x8C }, { AE_CTL2_REG, 0x04 },
271 { AE_FRM_CTL_REG, 0x01 }, { AE_FINE_CTL_REG(0), 0x3F },
272 { AE_FINE_CTL_REG(1), 0xA3 }, { AE_FINE_CTL_REG(3), 0x34 },
273
274 { LENS_CTRL_REG, 0x01 }, { LENS_XCEN_REG, 0x80 },
275 { LENS_YCEN_REG, 0x70 }, { LENS_R_COMP_REG, 0x53 },
276 { LENS_G_COMP_REG, 0x40 }, { LENS_B_COMP_REG, 0x3e },
277 { REG_TERM, 0 },
278};
279
280static inline struct sr030pc30_info *to_sr030pc30(struct v4l2_subdev *sd)
281{
282 return container_of(sd, struct sr030pc30_info, sd);
283}
284
285static inline int set_i2c_page(struct sr030pc30_info *info,
286 struct i2c_client *client, unsigned int reg)
287{
288 int ret = 0;
289 u32 page = reg >> 8 & 0xFF;
290
291 if (info->i2c_reg_page != page && (reg & 0xFF) != 0x03) {
292 ret = i2c_smbus_write_byte_data(client, PAGEMODE_REG, page);
293 if (!ret)
294 info->i2c_reg_page = page;
295 }
296 return ret;
297}
298
299static int cam_i2c_read(struct v4l2_subdev *sd, u32 reg_addr)
300{
301 struct i2c_client *client = v4l2_get_subdevdata(sd);
302 struct sr030pc30_info *info = to_sr030pc30(sd);
303
304 int ret = set_i2c_page(info, client, reg_addr);
305 if (!ret)
306 ret = i2c_smbus_read_byte_data(client, reg_addr & 0xFF);
307 return ret;
308}
309
310static int cam_i2c_write(struct v4l2_subdev *sd, u32 reg_addr, u32 val)
311{
312 struct i2c_client *client = v4l2_get_subdevdata(sd);
313 struct sr030pc30_info *info = to_sr030pc30(sd);
314
315 int ret = set_i2c_page(info, client, reg_addr);
316 if (!ret)
317 ret = i2c_smbus_write_byte_data(
318 client, reg_addr & 0xFF, val);
319 return ret;
320}
321
322static inline int sr030pc30_bulk_write_reg(struct v4l2_subdev *sd,
323 const struct i2c_regval *msg)
324{
325 while (msg->addr != REG_TERM) {
326 int ret = cam_i2c_write(sd, msg->addr, msg->val);
327 if (ret)
328 return ret;
329 msg++;
330 }
331 return 0;
332}
333
334
335static int sr030pc30_pwr_ctrl(struct v4l2_subdev *sd,
336 bool reset, bool sleep)
337{
338 struct sr030pc30_info *info = to_sr030pc30(sd);
339 u8 reg = sleep ? 0xF1 : 0xF0;
340 int ret = 0;
341
342 if (reset)
343 ret = cam_i2c_write(sd, POWER_CTRL_REG, reg | 0x02);
344 if (!ret) {
345 ret = cam_i2c_write(sd, POWER_CTRL_REG, reg);
346 if (!ret) {
347 info->sleep = sleep;
348 if (reset)
349 info->i2c_reg_page = -1;
350 }
351 }
352 return ret;
353}
354
355static int sr030pc30_set_flip(struct v4l2_subdev *sd)
356{
357 struct sr030pc30_info *info = to_sr030pc30(sd);
358
359 s32 reg = cam_i2c_read(sd, VDO_CTL2_REG);
360 if (reg < 0)
361 return reg;
362
363 reg &= 0x7C;
364 if (info->hflip)
365 reg |= 0x01;
366 if (info->vflip)
367 reg |= 0x02;
368 return cam_i2c_write(sd, VDO_CTL2_REG, reg | 0x80);
369}
370
371
372static int sr030pc30_set_params(struct v4l2_subdev *sd)
373{
374 struct sr030pc30_info *info = to_sr030pc30(sd);
375 int ret;
376
377 if (!info->curr_win)
378 return -EINVAL;
379
380
381 ret = cam_i2c_write(sd, VDO_CTL1_REG,
382 info->curr_win->vid_ctl1);
383
384 if (!ret && info->curr_fmt)
385 ret = cam_i2c_write(sd, ISP_CTL_REG(0),
386 info->curr_fmt->ispctl1_reg);
387 if (!ret)
388 ret = sr030pc30_set_flip(sd);
389
390 return ret;
391}
392
393
394static int sr030pc30_try_frame_size(struct v4l2_mbus_framefmt *mf)
395{
396 unsigned int min_err = ~0;
397 int i = ARRAY_SIZE(sr030pc30_sizes);
398 const struct sr030pc30_frmsize *fsize = &sr030pc30_sizes[0],
399 *match = NULL;
400 while (i--) {
401 int err = abs(fsize->width - mf->width)
402 + abs(fsize->height - mf->height);
403 if (err < min_err) {
404 min_err = err;
405 match = fsize;
406 }
407 fsize++;
408 }
409 if (match) {
410 mf->width = match->width;
411 mf->height = match->height;
412 return 0;
413 }
414 return -EINVAL;
415}
416
417static int sr030pc30_s_ctrl(struct v4l2_ctrl *ctrl)
418{
419 struct sr030pc30_info *info =
420 container_of(ctrl->handler, struct sr030pc30_info, hdl);
421 struct v4l2_subdev *sd = &info->sd;
422 int ret = 0;
423
424 v4l2_dbg(1, debug, sd, "%s: ctrl_id: %d, value: %d\n",
425 __func__, ctrl->id, ctrl->val);
426
427 switch (ctrl->id) {
428 case V4L2_CID_AUTO_WHITE_BALANCE:
429 if (ctrl->is_new) {
430 ret = cam_i2c_write(sd, AWB_CTL2_REG,
431 ctrl->val ? 0x2E : 0x2F);
432 if (!ret)
433 ret = cam_i2c_write(sd, AWB_CTL1_REG,
434 ctrl->val ? 0xFB : 0x7B);
435 }
436 if (!ret && info->blue->is_new)
437 ret = cam_i2c_write(sd, MWB_BGAIN_REG, info->blue->val);
438 if (!ret && info->red->is_new)
439 ret = cam_i2c_write(sd, MWB_RGAIN_REG, info->red->val);
440 return ret;
441
442 case V4L2_CID_EXPOSURE_AUTO:
443
444 if (ctrl->is_new)
445 ret = cam_i2c_write(sd, AE_CTL1_REG,
446 ctrl->val == V4L2_EXPOSURE_AUTO ? 0xDC : 0x0C);
447 if (info->exp->is_new) {
448 unsigned long expos = info->exp->val;
449
450 expos = expos * info->pdata->clk_rate / (8 * 1000);
451
452 if (!ret)
453 ret = cam_i2c_write(sd, EXP_TIMEH_REG,
454 expos >> 16 & 0xFF);
455 if (!ret)
456 ret = cam_i2c_write(sd, EXP_TIMEM_REG,
457 expos >> 8 & 0xFF);
458 if (!ret)
459 ret = cam_i2c_write(sd, EXP_TIMEL_REG,
460 expos & 0xFF);
461 }
462 return ret;
463 default:
464 return -EINVAL;
465 }
466
467 return 0;
468}
469
470static int sr030pc30_enum_mbus_code(struct v4l2_subdev *sd,
471 struct v4l2_subdev_state *sd_state,
472 struct v4l2_subdev_mbus_code_enum *code)
473{
474 if (!code || code->pad ||
475 code->index >= ARRAY_SIZE(sr030pc30_formats))
476 return -EINVAL;
477
478 code->code = sr030pc30_formats[code->index].code;
479 return 0;
480}
481
482static int sr030pc30_get_fmt(struct v4l2_subdev *sd,
483 struct v4l2_subdev_state *sd_state,
484 struct v4l2_subdev_format *format)
485{
486 struct v4l2_mbus_framefmt *mf;
487 struct sr030pc30_info *info = to_sr030pc30(sd);
488
489 if (!format || format->pad)
490 return -EINVAL;
491
492 mf = &format->format;
493
494 if (!info->curr_win || !info->curr_fmt)
495 return -EINVAL;
496
497 mf->width = info->curr_win->width;
498 mf->height = info->curr_win->height;
499 mf->code = info->curr_fmt->code;
500 mf->colorspace = info->curr_fmt->colorspace;
501 mf->field = V4L2_FIELD_NONE;
502
503 return 0;
504}
505
506
507static const struct sr030pc30_format *try_fmt(struct v4l2_subdev *sd,
508 struct v4l2_mbus_framefmt *mf)
509{
510 int i;
511
512 sr030pc30_try_frame_size(mf);
513
514 for (i = 0; i < ARRAY_SIZE(sr030pc30_formats); i++) {
515 if (mf->code == sr030pc30_formats[i].code)
516 break;
517 }
518 if (i == ARRAY_SIZE(sr030pc30_formats))
519 i = 0;
520
521 mf->code = sr030pc30_formats[i].code;
522
523 return &sr030pc30_formats[i];
524}
525
526
527static int sr030pc30_set_fmt(struct v4l2_subdev *sd,
528 struct v4l2_subdev_state *sd_state,
529 struct v4l2_subdev_format *format)
530{
531 struct sr030pc30_info *info = sd ? to_sr030pc30(sd) : NULL;
532 const struct sr030pc30_format *fmt;
533 struct v4l2_mbus_framefmt *mf;
534
535 if (!sd || !format)
536 return -EINVAL;
537
538 mf = &format->format;
539 if (format->pad)
540 return -EINVAL;
541
542 fmt = try_fmt(sd, mf);
543 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
544 sd_state->pads->try_fmt = *mf;
545 return 0;
546 }
547
548 info->curr_fmt = fmt;
549
550 return sr030pc30_set_params(sd);
551}
552
553static int sr030pc30_base_config(struct v4l2_subdev *sd)
554{
555 struct sr030pc30_info *info = to_sr030pc30(sd);
556 int ret;
557 unsigned long expmin, expmax;
558
559 ret = sr030pc30_bulk_write_reg(sd, sr030pc30_base_regs);
560 if (!ret) {
561 info->curr_fmt = &sr030pc30_formats[0];
562 info->curr_win = &sr030pc30_sizes[0];
563 ret = sr030pc30_set_params(sd);
564 }
565 if (!ret)
566 ret = sr030pc30_pwr_ctrl(sd, false, false);
567
568 if (ret)
569 return ret;
570
571 expmin = EXPOS_MIN_MS * info->pdata->clk_rate / (8 * 1000);
572 expmax = EXPOS_MAX_MS * info->pdata->clk_rate / (8 * 1000);
573
574 v4l2_dbg(1, debug, sd, "%s: expmin= %lx, expmax= %lx", __func__,
575 expmin, expmax);
576
577
578 ret = cam_i2c_write(sd, EXP_MMINH_REG, expmin >> 8 & 0xFF);
579 if (!ret)
580 ret = cam_i2c_write(sd, EXP_MMINL_REG, expmin & 0xFF);
581 if (!ret)
582 ret = cam_i2c_write(sd, EXP_MMAXH_REG, expmax >> 16 & 0xFF);
583 if (!ret)
584 ret = cam_i2c_write(sd, EXP_MMAXM_REG, expmax >> 8 & 0xFF);
585 if (!ret)
586 ret = cam_i2c_write(sd, EXP_MMAXL_REG, expmax & 0xFF);
587
588 return ret;
589}
590
591static int sr030pc30_s_power(struct v4l2_subdev *sd, int on)
592{
593 struct i2c_client *client = v4l2_get_subdevdata(sd);
594 struct sr030pc30_info *info = to_sr030pc30(sd);
595 const struct sr030pc30_platform_data *pdata = info->pdata;
596 int ret;
597
598 if (pdata == NULL) {
599 WARN(1, "No platform data!\n");
600 return -EINVAL;
601 }
602
603
604
605
606
607 if (!on)
608 sr030pc30_pwr_ctrl(sd, false, true);
609
610
611 if (pdata->set_power) {
612 ret = pdata->set_power(&client->dev, on);
613 if (ret)
614 return ret;
615 }
616
617 if (on) {
618 ret = sr030pc30_base_config(sd);
619 } else {
620 ret = 0;
621 info->curr_win = NULL;
622 info->curr_fmt = NULL;
623 }
624
625 return ret;
626}
627
628static const struct v4l2_ctrl_ops sr030pc30_ctrl_ops = {
629 .s_ctrl = sr030pc30_s_ctrl,
630};
631
632static const struct v4l2_subdev_core_ops sr030pc30_core_ops = {
633 .s_power = sr030pc30_s_power,
634};
635
636static const struct v4l2_subdev_pad_ops sr030pc30_pad_ops = {
637 .enum_mbus_code = sr030pc30_enum_mbus_code,
638 .get_fmt = sr030pc30_get_fmt,
639 .set_fmt = sr030pc30_set_fmt,
640};
641
642static const struct v4l2_subdev_ops sr030pc30_ops = {
643 .core = &sr030pc30_core_ops,
644 .pad = &sr030pc30_pad_ops,
645};
646
647
648
649
650
651static int sr030pc30_detect(struct i2c_client *client)
652{
653 const struct sr030pc30_platform_data *pdata
654 = client->dev.platform_data;
655 int ret;
656
657
658 if (pdata->set_power) {
659 ret = pdata->set_power(&client->dev, 1);
660 if (ret)
661 return ret;
662 }
663
664 ret = i2c_smbus_read_byte_data(client, DEVICE_ID_REG);
665
666 if (pdata->set_power)
667 pdata->set_power(&client->dev, 0);
668
669 if (ret < 0) {
670 dev_err(&client->dev, "%s: I2C read failed\n", __func__);
671 return ret;
672 }
673
674 return ret == SR030PC30_ID ? 0 : -ENODEV;
675}
676
677
678static int sr030pc30_probe(struct i2c_client *client,
679 const struct i2c_device_id *id)
680{
681 struct sr030pc30_info *info;
682 struct v4l2_subdev *sd;
683 struct v4l2_ctrl_handler *hdl;
684 const struct sr030pc30_platform_data *pdata
685 = client->dev.platform_data;
686 int ret;
687
688 if (!pdata) {
689 dev_err(&client->dev, "No platform data!");
690 return -EIO;
691 }
692
693 ret = sr030pc30_detect(client);
694 if (ret)
695 return ret;
696
697 info = devm_kzalloc(&client->dev, sizeof(*info), GFP_KERNEL);
698 if (!info)
699 return -ENOMEM;
700
701 sd = &info->sd;
702 info->pdata = client->dev.platform_data;
703
704 v4l2_i2c_subdev_init(sd, client, &sr030pc30_ops);
705
706 hdl = &info->hdl;
707 v4l2_ctrl_handler_init(hdl, 6);
708 info->awb = v4l2_ctrl_new_std(hdl, &sr030pc30_ctrl_ops,
709 V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
710 info->red = v4l2_ctrl_new_std(hdl, &sr030pc30_ctrl_ops,
711 V4L2_CID_RED_BALANCE, 0, 127, 1, 64);
712 info->blue = v4l2_ctrl_new_std(hdl, &sr030pc30_ctrl_ops,
713 V4L2_CID_BLUE_BALANCE, 0, 127, 1, 64);
714 info->autoexp = v4l2_ctrl_new_std(hdl, &sr030pc30_ctrl_ops,
715 V4L2_CID_EXPOSURE_AUTO, 0, 1, 1, 1);
716 info->exp = v4l2_ctrl_new_std(hdl, &sr030pc30_ctrl_ops,
717 V4L2_CID_EXPOSURE, EXPOS_MIN_MS, EXPOS_MAX_MS, 1, 30);
718 sd->ctrl_handler = hdl;
719 if (hdl->error) {
720 int err = hdl->error;
721
722 v4l2_ctrl_handler_free(hdl);
723 return err;
724 }
725 v4l2_ctrl_auto_cluster(3, &info->awb, 0, false);
726 v4l2_ctrl_auto_cluster(2, &info->autoexp, V4L2_EXPOSURE_MANUAL, false);
727 v4l2_ctrl_handler_setup(hdl);
728
729 info->i2c_reg_page = -1;
730 info->hflip = 1;
731
732 return 0;
733}
734
735static int sr030pc30_remove(struct i2c_client *client)
736{
737 struct v4l2_subdev *sd = i2c_get_clientdata(client);
738
739 v4l2_device_unregister_subdev(sd);
740 v4l2_ctrl_handler_free(sd->ctrl_handler);
741 return 0;
742}
743
744static const struct i2c_device_id sr030pc30_id[] = {
745 { MODULE_NAME, 0 },
746 { },
747};
748MODULE_DEVICE_TABLE(i2c, sr030pc30_id);
749
750
751static struct i2c_driver sr030pc30_i2c_driver = {
752 .driver = {
753 .name = MODULE_NAME
754 },
755 .probe = sr030pc30_probe,
756 .remove = sr030pc30_remove,
757 .id_table = sr030pc30_id,
758};
759
760module_i2c_driver(sr030pc30_i2c_driver);
761
762MODULE_DESCRIPTION("Siliconfile SR030PC30 camera driver");
763MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
764MODULE_LICENSE("GPL");
765
