1 /*
2 * Driver for SiliconFile NOON010PC30 CIF (1/11") Image Sensor with ISP
3 *
4 * Copyright (C) 2010 - 2011 Samsung Electronics Co., Ltd.
5 * Contact: Sylwester Nawrocki, <s.nawrocki@samsung.com>
6 *
7 * Initial register configuration based on a driver authored by
8 * HeungJun Kim <riverful.kim@samsung.com>.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 */
15
16 #include <linux/delay.h>
17 #include <linux/gpio.h>
18 #include <linux/i2c.h>
19 #include <linux/slab.h>
20 #include <linux/regulator/consumer.h>
21 #include <media/noon010pc30.h>
22 #include <media/v4l2-chip-ident.h>
23 #include <linux/videodev2.h>
24 #include <linux/module.h>
25 #include <media/v4l2-ctrls.h>
26 #include <media/v4l2-device.h>
27 #include <media/v4l2-mediabus.h>
28 #include <media/v4l2-subdev.h>
29
30 static int debug;
31 module_param(debug, int, 0644);
32 MODULE_PARM_DESC(debug, "Enable module debug trace. Set to 1 to enable.");
33
34 #define MODULE_NAME "NOON010PC30"
35
36 /*
37 * Register offsets within a page
38 * b15..b8 - page id, b7..b0 - register address
39 */
40 #define POWER_CTRL_REG 0x0001
41 #define PAGEMODE_REG 0x03
42 #define DEVICE_ID_REG 0x0004
43 #define NOON010PC30_ID 0x86
44 #define VDO_CTL_REG(n) (0x0010 + (n))
45 #define SYNC_CTL_REG 0x0012
46 /* Window size and position */
47 #define WIN_ROWH_REG 0x0013
48 #define WIN_ROWL_REG 0x0014
49 #define WIN_COLH_REG 0x0015
50 #define WIN_COLL_REG 0x0016
51 #define WIN_HEIGHTH_REG 0x0017
52 #define WIN_HEIGHTL_REG 0x0018
53 #define WIN_WIDTHH_REG 0x0019
54 #define WIN_WIDTHL_REG 0x001A
55 #define HBLANKH_REG 0x001B
56 #define HBLANKL_REG 0x001C
57 #define VSYNCH_REG 0x001D
58 #define VSYNCL_REG 0x001E
59 /* VSYNC control */
60 #define VS_CTL_REG(n) (0x00A1 + (n))
61 /* page 1 */
62 #define ISP_CTL_REG(n) (0x0110 + (n))
63 #define YOFS_REG 0x0119
64 #define DARK_YOFS_REG 0x011A
65 #define SAT_CTL_REG 0x0120
66 #define BSAT_REG 0x0121
67 #define RSAT_REG 0x0122
68 /* Color correction */
69 #define CMC_CTL_REG 0x0130
70 #define CMC_OFSGH_REG 0x0133
71 #define CMC_OFSGL_REG 0x0135
72 #define CMC_SIGN_REG 0x0136
73 #define CMC_GOFS_REG 0x0137
74 #define CMC_COEF_REG(n) (0x0138 + (n))
75 #define CMC_OFS_REG(n) (0x0141 + (n))
76 /* Gamma correction */
77 #define GMA_CTL_REG 0x0160
78 #define GMA_COEF_REG(n) (0x0161 + (n))
79 /* Lens Shading */
80 #define LENS_CTRL_REG 0x01D0
81 #define LENS_XCEN_REG 0x01D1
82 #define LENS_YCEN_REG 0x01D2
83 #define LENS_RC_REG 0x01D3
84 #define LENS_GC_REG 0x01D4
85 #define LENS_BC_REG 0x01D5
86 #define L_AGON_REG 0x01D6
87 #define L_AGOFF_REG 0x01D7
88 /* Page 3 - Auto Exposure */
89 #define AE_CTL_REG(n) (0x0310 + (n))
90 #define AE_CTL9_REG 0x032C
91 #define AE_CTL10_REG 0x032D
92 #define AE_YLVL_REG 0x031C
93 #define AE_YTH_REG(n) (0x031D + (n))
94 #define AE_WGT_REG 0x0326
95 #define EXP_TIMEH_REG 0x0333
96 #define EXP_TIMEM_REG 0x0334
97 #define EXP_TIMEL_REG 0x0335
98 #define EXP_MMINH_REG 0x0336
99 #define EXP_MMINL_REG 0x0337
100 #define EXP_MMAXH_REG 0x0338
101 #define EXP_MMAXM_REG 0x0339
102 #define EXP_MMAXL_REG 0x033A
103 /* Page 4 - Auto White Balance */
104 #define AWB_CTL_REG(n) (0x0410 + (n))
105 #define AWB_ENABE 0x80
106 #define AWB_WGHT_REG 0x0419
107 #define BGAIN_PAR_REG(n) (0x044F + (n))
108 /* Manual white balance, when AWB_CTL2[0]=1 */
109 #define MWB_RGAIN_REG 0x0466
110 #define MWB_BGAIN_REG 0x0467
111
112 /* The token to mark an array end */
113 #define REG_TERM 0xFFFF
114
115 struct noon010_format {
116 enum v4l2_mbus_pixelcode code;
117 enum v4l2_colorspace colorspace;
118 u16 ispctl1_reg;
119 };
120
121 struct noon010_frmsize {
122 u16 width;
123 u16 height;
124 int vid_ctl1;
125 };
126
127 static const char * const noon010_supply_name[] = {
128 "vdd_core", "vddio", "vdda"
129 };
130
131 #define NOON010_NUM_SUPPLIES ARRAY_SIZE(noon010_supply_name)
132
133 struct noon010_info {
134 struct v4l2_subdev sd;
135 struct media_pad pad;
136 struct v4l2_ctrl_handler hdl;
137 struct regulator_bulk_data supply[NOON010_NUM_SUPPLIES];
138 u32 gpio_nreset;
139 u32 gpio_nstby;
140
141 /* Protects the struct members below */
142 struct mutex lock;
143
144 const struct noon010_format *curr_fmt;
145 const struct noon010_frmsize *curr_win;
146 unsigned int apply_new_cfg:1;
147 unsigned int streaming:1;
148 unsigned int hflip:1;
149 unsigned int vflip:1;
150 unsigned int power:1;
151 u8 i2c_reg_page;
152 };
153
154 struct i2c_regval {
155 u16 addr;
156 u16 val;
157 };
158
159 /* Supported resolutions. */
160 static const struct noon010_frmsize noon010_sizes[] = {
161 {
162 .width = 352,
163 .height = 288,
164 .vid_ctl1 = 0,
165 }, {
166 .width = 176,
167 .height = 144,
168 .vid_ctl1 = 0x10,
169 }, {
170 .width = 88,
171 .height = 72,
172 .vid_ctl1 = 0x20,
173 },
174 };
175
176 /* Supported pixel formats. */
177 static const struct noon010_format noon010_formats[] = {
178 {
179 .code = V4L2_MBUS_FMT_YUYV8_2X8,
180 .colorspace = V4L2_COLORSPACE_JPEG,
181 .ispctl1_reg = 0x03,
182 }, {
183 .code = V4L2_MBUS_FMT_YVYU8_2X8,
184 .colorspace = V4L2_COLORSPACE_JPEG,
185 .ispctl1_reg = 0x02,
186 }, {
187 .code = V4L2_MBUS_FMT_VYUY8_2X8,
188 .colorspace = V4L2_COLORSPACE_JPEG,
189 .ispctl1_reg = 0,
190 }, {
191 .code = V4L2_MBUS_FMT_UYVY8_2X8,
192 .colorspace = V4L2_COLORSPACE_JPEG,
193 .ispctl1_reg = 0x01,
194 }, {
195 .code = V4L2_MBUS_FMT_RGB565_2X8_BE,
196 .colorspace = V4L2_COLORSPACE_JPEG,
197 .ispctl1_reg = 0x40,
198 },
199 };
200
201 static const struct i2c_regval noon010_base_regs[] = {
202 { WIN_COLL_REG, 0x06 }, { HBLANKL_REG, 0x7C },
203 /* Color corection and saturation */
204 { ISP_CTL_REG(0), 0x30 }, { ISP_CTL_REG(2), 0x30 },
205 { YOFS_REG, 0x80 }, { DARK_YOFS_REG, 0x04 },
206 { SAT_CTL_REG, 0x1F }, { BSAT_REG, 0x90 },
207 { CMC_CTL_REG, 0x0F }, { CMC_OFSGH_REG, 0x3C },
208 { CMC_OFSGL_REG, 0x2C }, { CMC_SIGN_REG, 0x3F },
209 { CMC_COEF_REG(0), 0x79 }, { CMC_OFS_REG(0), 0x00 },
210 { CMC_COEF_REG(1), 0x39 }, { CMC_OFS_REG(1), 0x00 },
211 { CMC_COEF_REG(2), 0x00 }, { CMC_OFS_REG(2), 0x00 },
212 { CMC_COEF_REG(3), 0x11 }, { CMC_OFS_REG(3), 0x8B },
213 { CMC_COEF_REG(4), 0x65 }, { CMC_OFS_REG(4), 0x07 },
214 { CMC_COEF_REG(5), 0x14 }, { CMC_OFS_REG(5), 0x04 },
215 { CMC_COEF_REG(6), 0x01 }, { CMC_OFS_REG(6), 0x9C },
216 { CMC_COEF_REG(7), 0x33 }, { CMC_OFS_REG(7), 0x89 },
217 { CMC_COEF_REG(8), 0x74 }, { CMC_OFS_REG(8), 0x25 },
218 /* Automatic white balance */
219 { AWB_CTL_REG(0), 0x78 }, { AWB_CTL_REG(1), 0x2E },
220 { AWB_CTL_REG(2), 0x20 }, { AWB_CTL_REG(3), 0x85 },
221 /* Auto exposure */
222 { AE_CTL_REG(0), 0xDC }, { AE_CTL_REG(1), 0x81 },
223 { AE_CTL_REG(2), 0x30 }, { AE_CTL_REG(3), 0xA5 },
224 { AE_CTL_REG(4), 0x40 }, { AE_CTL_REG(5), 0x51 },
225 { AE_CTL_REG(6), 0x33 }, { AE_CTL_REG(7), 0x7E },
226 { AE_CTL9_REG, 0x00 }, { AE_CTL10_REG, 0x02 },
227 { AE_YLVL_REG, 0x44 }, { AE_YTH_REG(0), 0x34 },
228 { AE_YTH_REG(1), 0x30 }, { AE_WGT_REG, 0xD5 },
229 /* Lens shading compensation */
230 { LENS_CTRL_REG, 0x01 }, { LENS_XCEN_REG, 0x80 },
231 { LENS_YCEN_REG, 0x70 }, { LENS_RC_REG, 0x53 },
232 { LENS_GC_REG, 0x40 }, { LENS_BC_REG, 0x3E },
233 { REG_TERM, 0 },
234 };
235
to_noon010(struct v4l2_subdev * sd)236 static inline struct noon010_info *to_noon010(struct v4l2_subdev *sd)
237 {
238 return container_of(sd, struct noon010_info, sd);
239 }
240
to_sd(struct v4l2_ctrl * ctrl)241 static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
242 {
243 return &container_of(ctrl->handler, struct noon010_info, hdl)->sd;
244 }
245
set_i2c_page(struct noon010_info * info,struct i2c_client * client,unsigned int reg)246 static inline int set_i2c_page(struct noon010_info *info,
247 struct i2c_client *client, unsigned int reg)
248 {
249 u32 page = reg >> 8 & 0xFF;
250 int ret = 0;
251
252 if (info->i2c_reg_page != page && (reg & 0xFF) != 0x03) {
253 ret = i2c_smbus_write_byte_data(client, PAGEMODE_REG, page);
254 if (!ret)
255 info->i2c_reg_page = page;
256 }
257 return ret;
258 }
259
cam_i2c_read(struct v4l2_subdev * sd,u32 reg_addr)260 static int cam_i2c_read(struct v4l2_subdev *sd, u32 reg_addr)
261 {
262 struct i2c_client *client = v4l2_get_subdevdata(sd);
263 struct noon010_info *info = to_noon010(sd);
264 int ret = set_i2c_page(info, client, reg_addr);
265
266 if (ret)
267 return ret;
268 return i2c_smbus_read_byte_data(client, reg_addr & 0xFF);
269 }
270
cam_i2c_write(struct v4l2_subdev * sd,u32 reg_addr,u32 val)271 static int cam_i2c_write(struct v4l2_subdev *sd, u32 reg_addr, u32 val)
272 {
273 struct i2c_client *client = v4l2_get_subdevdata(sd);
274 struct noon010_info *info = to_noon010(sd);
275 int ret = set_i2c_page(info, client, reg_addr);
276
277 if (ret)
278 return ret;
279 return i2c_smbus_write_byte_data(client, reg_addr & 0xFF, val);
280 }
281
noon010_bulk_write_reg(struct v4l2_subdev * sd,const struct i2c_regval * msg)282 static inline int noon010_bulk_write_reg(struct v4l2_subdev *sd,
283 const struct i2c_regval *msg)
284 {
285 while (msg->addr != REG_TERM) {
286 int ret = cam_i2c_write(sd, msg->addr, msg->val);
287
288 if (ret)
289 return ret;
290 msg++;
291 }
292 return 0;
293 }
294
295 /* Device reset and sleep mode control */
noon010_power_ctrl(struct v4l2_subdev * sd,bool reset,bool sleep)296 static int noon010_power_ctrl(struct v4l2_subdev *sd, bool reset, bool sleep)
297 {
298 struct noon010_info *info = to_noon010(sd);
299 u8 reg = sleep ? 0xF1 : 0xF0;
300 int ret = 0;
301
302 if (reset) {
303 ret = cam_i2c_write(sd, POWER_CTRL_REG, reg | 0x02);
304 udelay(20);
305 }
306 if (!ret) {
307 ret = cam_i2c_write(sd, POWER_CTRL_REG, reg);
308 if (reset && !ret)
309 info->i2c_reg_page = -1;
310 }
311 return ret;
312 }
313
314 /* Automatic white balance control */
noon010_enable_autowhitebalance(struct v4l2_subdev * sd,int on)315 static int noon010_enable_autowhitebalance(struct v4l2_subdev *sd, int on)
316 {
317 int ret;
318
319 ret = cam_i2c_write(sd, AWB_CTL_REG(1), on ? 0x2E : 0x2F);
320 if (!ret)
321 ret = cam_i2c_write(sd, AWB_CTL_REG(0), on ? 0xFB : 0x7B);
322 return ret;
323 }
324
325 /* Called with struct noon010_info.lock mutex held */
noon010_set_flip(struct v4l2_subdev * sd,int hflip,int vflip)326 static int noon010_set_flip(struct v4l2_subdev *sd, int hflip, int vflip)
327 {
328 struct noon010_info *info = to_noon010(sd);
329 int reg, ret;
330
331 reg = cam_i2c_read(sd, VDO_CTL_REG(1));
332 if (reg < 0)
333 return reg;
334
335 reg &= 0x7C;
336 if (hflip)
337 reg |= 0x01;
338 if (vflip)
339 reg |= 0x02;
340
341 ret = cam_i2c_write(sd, VDO_CTL_REG(1), reg | 0x80);
342 if (!ret) {
343 info->hflip = hflip;
344 info->vflip = vflip;
345 }
346 return ret;
347 }
348
349 /* Configure resolution and color format */
noon010_set_params(struct v4l2_subdev * sd)350 static int noon010_set_params(struct v4l2_subdev *sd)
351 {
352 struct noon010_info *info = to_noon010(sd);
353
354 int ret = cam_i2c_write(sd, VDO_CTL_REG(0),
355 info->curr_win->vid_ctl1);
356 if (ret)
357 return ret;
358 return cam_i2c_write(sd, ISP_CTL_REG(0),
359 info->curr_fmt->ispctl1_reg);
360 }
361
362 /* Find nearest matching image pixel size. */
noon010_try_frame_size(struct v4l2_mbus_framefmt * mf,const struct noon010_frmsize ** size)363 static int noon010_try_frame_size(struct v4l2_mbus_framefmt *mf,
364 const struct noon010_frmsize **size)
365 {
366 unsigned int min_err = ~0;
367 int i = ARRAY_SIZE(noon010_sizes);
368 const struct noon010_frmsize *fsize = &noon010_sizes[0],
369 *match = NULL;
370
371 while (i--) {
372 int err = abs(fsize->width - mf->width)
373 + abs(fsize->height - mf->height);
374
375 if (err < min_err) {
376 min_err = err;
377 match = fsize;
378 }
379 fsize++;
380 }
381 if (match) {
382 mf->width = match->width;
383 mf->height = match->height;
384 if (size)
385 *size = match;
386 return 0;
387 }
388 return -EINVAL;
389 }
390
391 /* Called with info.lock mutex held */
power_enable(struct noon010_info * info)392 static int power_enable(struct noon010_info *info)
393 {
394 int ret;
395
396 if (info->power) {
397 v4l2_info(&info->sd, "%s: sensor is already on\n", __func__);
398 return 0;
399 }
400
401 if (gpio_is_valid(info->gpio_nstby))
402 gpio_set_value(info->gpio_nstby, 0);
403
404 if (gpio_is_valid(info->gpio_nreset))
405 gpio_set_value(info->gpio_nreset, 0);
406
407 ret = regulator_bulk_enable(NOON010_NUM_SUPPLIES, info->supply);
408 if (ret)
409 return ret;
410
411 if (gpio_is_valid(info->gpio_nreset)) {
412 msleep(50);
413 gpio_set_value(info->gpio_nreset, 1);
414 }
415 if (gpio_is_valid(info->gpio_nstby)) {
416 udelay(1000);
417 gpio_set_value(info->gpio_nstby, 1);
418 }
419 if (gpio_is_valid(info->gpio_nreset)) {
420 udelay(1000);
421 gpio_set_value(info->gpio_nreset, 0);
422 msleep(100);
423 gpio_set_value(info->gpio_nreset, 1);
424 msleep(20);
425 }
426 info->power = 1;
427
428 v4l2_dbg(1, debug, &info->sd, "%s: sensor is on\n", __func__);
429 return 0;
430 }
431
432 /* Called with info.lock mutex held */
power_disable(struct noon010_info * info)433 static int power_disable(struct noon010_info *info)
434 {
435 int ret;
436
437 if (!info->power) {
438 v4l2_info(&info->sd, "%s: sensor is already off\n", __func__);
439 return 0;
440 }
441
442 ret = regulator_bulk_disable(NOON010_NUM_SUPPLIES, info->supply);
443 if (ret)
444 return ret;
445
446 if (gpio_is_valid(info->gpio_nstby))
447 gpio_set_value(info->gpio_nstby, 0);
448
449 if (gpio_is_valid(info->gpio_nreset))
450 gpio_set_value(info->gpio_nreset, 0);
451
452 info->power = 0;
453
454 v4l2_dbg(1, debug, &info->sd, "%s: sensor is off\n", __func__);
455
456 return 0;
457 }
458
noon010_s_ctrl(struct v4l2_ctrl * ctrl)459 static int noon010_s_ctrl(struct v4l2_ctrl *ctrl)
460 {
461 struct v4l2_subdev *sd = to_sd(ctrl);
462 struct noon010_info *info = to_noon010(sd);
463 int ret = 0;
464
465 v4l2_dbg(1, debug, sd, "%s: ctrl_id: %d, value: %d\n",
466 __func__, ctrl->id, ctrl->val);
467
468 mutex_lock(&info->lock);
469 /*
470 * If the device is not powered up by the host driver do
471 * not apply any controls to H/W at this time. Instead
472 * the controls will be restored right after power-up.
473 */
474 if (!info->power)
475 goto unlock;
476
477 switch (ctrl->id) {
478 case V4L2_CID_AUTO_WHITE_BALANCE:
479 ret = noon010_enable_autowhitebalance(sd, ctrl->val);
480 break;
481 case V4L2_CID_BLUE_BALANCE:
482 ret = cam_i2c_write(sd, MWB_BGAIN_REG, ctrl->val);
483 break;
484 case V4L2_CID_RED_BALANCE:
485 ret = cam_i2c_write(sd, MWB_RGAIN_REG, ctrl->val);
486 break;
487 default:
488 ret = -EINVAL;
489 }
490 unlock:
491 mutex_unlock(&info->lock);
492 return ret;
493 }
494
noon010_enum_mbus_code(struct v4l2_subdev * sd,struct v4l2_subdev_fh * fh,struct v4l2_subdev_mbus_code_enum * code)495 static int noon010_enum_mbus_code(struct v4l2_subdev *sd,
496 struct v4l2_subdev_fh *fh,
497 struct v4l2_subdev_mbus_code_enum *code)
498 {
499 if (code->index >= ARRAY_SIZE(noon010_formats))
500 return -EINVAL;
501
502 code->code = noon010_formats[code->index].code;
503 return 0;
504 }
505
noon010_get_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_fh * fh,struct v4l2_subdev_format * fmt)506 static int noon010_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
507 struct v4l2_subdev_format *fmt)
508 {
509 struct noon010_info *info = to_noon010(sd);
510 struct v4l2_mbus_framefmt *mf;
511
512 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
513 if (fh) {
514 mf = v4l2_subdev_get_try_format(fh, 0);
515 fmt->format = *mf;
516 }
517 return 0;
518 }
519 mf = &fmt->format;
520
521 mutex_lock(&info->lock);
522 mf->width = info->curr_win->width;
523 mf->height = info->curr_win->height;
524 mf->code = info->curr_fmt->code;
525 mf->colorspace = info->curr_fmt->colorspace;
526 mf->field = V4L2_FIELD_NONE;
527
528 mutex_unlock(&info->lock);
529 return 0;
530 }
531
532 /* Return nearest media bus frame format. */
noon010_try_fmt(struct v4l2_subdev * sd,struct v4l2_mbus_framefmt * mf)533 static const struct noon010_format *noon010_try_fmt(struct v4l2_subdev *sd,
534 struct v4l2_mbus_framefmt *mf)
535 {
536 int i = ARRAY_SIZE(noon010_formats);
537
538 while (--i)
539 if (mf->code == noon010_formats[i].code)
540 break;
541 mf->code = noon010_formats[i].code;
542
543 return &noon010_formats[i];
544 }
545
noon010_set_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_fh * fh,struct v4l2_subdev_format * fmt)546 static int noon010_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
547 struct v4l2_subdev_format *fmt)
548 {
549 struct noon010_info *info = to_noon010(sd);
550 const struct noon010_frmsize *size = NULL;
551 const struct noon010_format *nf;
552 struct v4l2_mbus_framefmt *mf;
553 int ret = 0;
554
555 nf = noon010_try_fmt(sd, &fmt->format);
556 noon010_try_frame_size(&fmt->format, &size);
557 fmt->format.colorspace = V4L2_COLORSPACE_JPEG;
558
559 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
560 if (fh) {
561 mf = v4l2_subdev_get_try_format(fh, 0);
562 *mf = fmt->format;
563 }
564 return 0;
565 }
566 mutex_lock(&info->lock);
567 if (!info->streaming) {
568 info->apply_new_cfg = 1;
569 info->curr_fmt = nf;
570 info->curr_win = size;
571 } else {
572 ret = -EBUSY;
573 }
574 mutex_unlock(&info->lock);
575 return ret;
576 }
577
578 /* Called with struct noon010_info.lock mutex held */
noon010_base_config(struct v4l2_subdev * sd)579 static int noon010_base_config(struct v4l2_subdev *sd)
580 {
581 int ret = noon010_bulk_write_reg(sd, noon010_base_regs);
582 if (!ret)
583 ret = noon010_set_params(sd);
584 if (!ret)
585 ret = noon010_set_flip(sd, 1, 0);
586
587 return ret;
588 }
589
noon010_s_power(struct v4l2_subdev * sd,int on)590 static int noon010_s_power(struct v4l2_subdev *sd, int on)
591 {
592 struct noon010_info *info = to_noon010(sd);
593 int ret;
594
595 mutex_lock(&info->lock);
596 if (on) {
597 ret = power_enable(info);
598 if (!ret)
599 ret = noon010_base_config(sd);
600 } else {
601 noon010_power_ctrl(sd, false, true);
602 ret = power_disable(info);
603 }
604 mutex_unlock(&info->lock);
605
606 /* Restore the controls state */
607 if (!ret && on)
608 ret = v4l2_ctrl_handler_setup(&info->hdl);
609
610 return ret;
611 }
612
noon010_s_stream(struct v4l2_subdev * sd,int on)613 static int noon010_s_stream(struct v4l2_subdev *sd, int on)
614 {
615 struct noon010_info *info = to_noon010(sd);
616 int ret = 0;
617
618 mutex_lock(&info->lock);
619 if (!info->streaming != !on) {
620 ret = noon010_power_ctrl(sd, false, !on);
621 if (!ret)
622 info->streaming = on;
623 }
624 if (!ret && on && info->apply_new_cfg) {
625 ret = noon010_set_params(sd);
626 if (!ret)
627 info->apply_new_cfg = 0;
628 }
629 mutex_unlock(&info->lock);
630 return ret;
631 }
632
noon010_log_status(struct v4l2_subdev * sd)633 static int noon010_log_status(struct v4l2_subdev *sd)
634 {
635 struct noon010_info *info = to_noon010(sd);
636
637 v4l2_ctrl_handler_log_status(&info->hdl, sd->name);
638 return 0;
639 }
640
noon010_open(struct v4l2_subdev * sd,struct v4l2_subdev_fh * fh)641 static int noon010_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
642 {
643 struct v4l2_mbus_framefmt *mf = v4l2_subdev_get_try_format(fh, 0);
644
645 mf->width = noon010_sizes[0].width;
646 mf->height = noon010_sizes[0].height;
647 mf->code = noon010_formats[0].code;
648 mf->colorspace = V4L2_COLORSPACE_JPEG;
649 mf->field = V4L2_FIELD_NONE;
650 return 0;
651 }
652
653 static const struct v4l2_subdev_internal_ops noon010_subdev_internal_ops = {
654 .open = noon010_open,
655 };
656
657 static const struct v4l2_ctrl_ops noon010_ctrl_ops = {
658 .s_ctrl = noon010_s_ctrl,
659 };
660
661 static const struct v4l2_subdev_core_ops noon010_core_ops = {
662 .s_power = noon010_s_power,
663 .g_ctrl = v4l2_subdev_g_ctrl,
664 .s_ctrl = v4l2_subdev_s_ctrl,
665 .queryctrl = v4l2_subdev_queryctrl,
666 .querymenu = v4l2_subdev_querymenu,
667 .g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
668 .try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
669 .s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
670 .log_status = noon010_log_status,
671 };
672
673 static struct v4l2_subdev_pad_ops noon010_pad_ops = {
674 .enum_mbus_code = noon010_enum_mbus_code,
675 .get_fmt = noon010_get_fmt,
676 .set_fmt = noon010_set_fmt,
677 };
678
679 static struct v4l2_subdev_video_ops noon010_video_ops = {
680 .s_stream = noon010_s_stream,
681 };
682
683 static const struct v4l2_subdev_ops noon010_ops = {
684 .core = &noon010_core_ops,
685 .pad = &noon010_pad_ops,
686 .video = &noon010_video_ops,
687 };
688
689 /* Return 0 if NOON010PC30L sensor type was detected or -ENODEV otherwise. */
noon010_detect(struct i2c_client * client,struct noon010_info * info)690 static int noon010_detect(struct i2c_client *client, struct noon010_info *info)
691 {
692 int ret;
693
694 ret = power_enable(info);
695 if (ret)
696 return ret;
697
698 ret = i2c_smbus_read_byte_data(client, DEVICE_ID_REG);
699 if (ret < 0)
700 dev_err(&client->dev, "I2C read failed: 0x%X\n", ret);
701
702 power_disable(info);
703
704 return ret == NOON010PC30_ID ? 0 : -ENODEV;
705 }
706
noon010_probe(struct i2c_client * client,const struct i2c_device_id * id)707 static int noon010_probe(struct i2c_client *client,
708 const struct i2c_device_id *id)
709 {
710 struct noon010_info *info;
711 struct v4l2_subdev *sd;
712 const struct noon010pc30_platform_data *pdata
713 = client->dev.platform_data;
714 int ret;
715 int i;
716
717 if (!pdata) {
718 dev_err(&client->dev, "No platform data!\n");
719 return -EIO;
720 }
721
722 info = kzalloc(sizeof(*info), GFP_KERNEL);
723 if (!info)
724 return -ENOMEM;
725
726 mutex_init(&info->lock);
727 sd = &info->sd;
728 v4l2_i2c_subdev_init(sd, client, &noon010_ops);
729 strlcpy(sd->name, MODULE_NAME, sizeof(sd->name));
730
731 sd->internal_ops = &noon010_subdev_internal_ops;
732 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
733
734 v4l2_ctrl_handler_init(&info->hdl, 3);
735
736 v4l2_ctrl_new_std(&info->hdl, &noon010_ctrl_ops,
737 V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
738 v4l2_ctrl_new_std(&info->hdl, &noon010_ctrl_ops,
739 V4L2_CID_RED_BALANCE, 0, 127, 1, 64);
740 v4l2_ctrl_new_std(&info->hdl, &noon010_ctrl_ops,
741 V4L2_CID_BLUE_BALANCE, 0, 127, 1, 64);
742
743 sd->ctrl_handler = &info->hdl;
744
745 ret = info->hdl.error;
746 if (ret)
747 goto np_err;
748
749 info->i2c_reg_page = -1;
750 info->gpio_nreset = -EINVAL;
751 info->gpio_nstby = -EINVAL;
752 info->curr_fmt = &noon010_formats[0];
753 info->curr_win = &noon010_sizes[0];
754
755 if (gpio_is_valid(pdata->gpio_nreset)) {
756 ret = gpio_request(pdata->gpio_nreset, "NOON010PC30 NRST");
757 if (ret) {
758 dev_err(&client->dev, "GPIO request error: %d\n", ret);
759 goto np_err;
760 }
761 info->gpio_nreset = pdata->gpio_nreset;
762 gpio_direction_output(info->gpio_nreset, 0);
763 gpio_export(info->gpio_nreset, 0);
764 }
765
766 if (gpio_is_valid(pdata->gpio_nstby)) {
767 ret = gpio_request(pdata->gpio_nstby, "NOON010PC30 NSTBY");
768 if (ret) {
769 dev_err(&client->dev, "GPIO request error: %d\n", ret);
770 goto np_gpio_err;
771 }
772 info->gpio_nstby = pdata->gpio_nstby;
773 gpio_direction_output(info->gpio_nstby, 0);
774 gpio_export(info->gpio_nstby, 0);
775 }
776
777 for (i = 0; i < NOON010_NUM_SUPPLIES; i++)
778 info->supply[i].supply = noon010_supply_name[i];
779
780 ret = regulator_bulk_get(&client->dev, NOON010_NUM_SUPPLIES,
781 info->supply);
782 if (ret)
783 goto np_reg_err;
784
785 info->pad.flags = MEDIA_PAD_FL_SOURCE;
786 sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
787 ret = media_entity_init(&sd->entity, 1, &info->pad, 0);
788 if (ret < 0)
789 goto np_me_err;
790
791 ret = noon010_detect(client, info);
792 if (!ret)
793 return 0;
794
795 np_me_err:
796 regulator_bulk_free(NOON010_NUM_SUPPLIES, info->supply);
797 np_reg_err:
798 if (gpio_is_valid(info->gpio_nstby))
799 gpio_free(info->gpio_nstby);
800 np_gpio_err:
801 if (gpio_is_valid(info->gpio_nreset))
802 gpio_free(info->gpio_nreset);
803 np_err:
804 v4l2_ctrl_handler_free(&info->hdl);
805 v4l2_device_unregister_subdev(sd);
806 kfree(info);
807 return ret;
808 }
809
noon010_remove(struct i2c_client * client)810 static int noon010_remove(struct i2c_client *client)
811 {
812 struct v4l2_subdev *sd = i2c_get_clientdata(client);
813 struct noon010_info *info = to_noon010(sd);
814
815 v4l2_device_unregister_subdev(sd);
816 v4l2_ctrl_handler_free(&info->hdl);
817
818 regulator_bulk_free(NOON010_NUM_SUPPLIES, info->supply);
819
820 if (gpio_is_valid(info->gpio_nreset))
821 gpio_free(info->gpio_nreset);
822
823 if (gpio_is_valid(info->gpio_nstby))
824 gpio_free(info->gpio_nstby);
825
826 media_entity_cleanup(&sd->entity);
827 kfree(info);
828 return 0;
829 }
830
831 static const struct i2c_device_id noon010_id[] = {
832 { MODULE_NAME, 0 },
833 { },
834 };
835 MODULE_DEVICE_TABLE(i2c, noon010_id);
836
837
838 static struct i2c_driver noon010_i2c_driver = {
839 .driver = {
840 .name = MODULE_NAME
841 },
842 .probe = noon010_probe,
843 .remove = noon010_remove,
844 .id_table = noon010_id,
845 };
846
847 module_i2c_driver(noon010_i2c_driver);
848
849 MODULE_DESCRIPTION("Siliconfile NOON010PC30 camera driver");
850 MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
851 MODULE_LICENSE("GPL");
852