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[media] Add v4l2 subdev driver for NOON010PC30L image sensor
[deliverable/linux.git] / drivers / media / video / noon010pc30.c
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f8e2e3ea
SN		 1/*
2 * Driver for SiliconFile NOON010PC30 CIF (1/11") Image Sensor with ISP
3 *
4 * Copyright (C) 2010 Samsung Electronics
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 vergsion.
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 <media/v4l2-ctrls.h>
25#include <media/v4l2-device.h>
26#include <media/v4l2-mediabus.h>
27#include <media/v4l2-subdev.h>
28
29static int debug;
30module_param(debug, int, 0644);
31MODULE_PARM_DESC(debug, "Enable module debug trace. Set to 1 to enable.");
32
33#define MODULE_NAME "NOON010PC30"
34
35/*
36 * Register offsets within a page
37 * b15..b8 - page id, b7..b0 - register address
38 */
39#define POWER_CTRL_REG 0x0001
40#define PAGEMODE_REG 0x03
41#define DEVICE_ID_REG 0x0004
42#define NOON010PC30_ID 0x86
43#define VDO_CTL_REG(n) (0x0010 + (n))
44#define SYNC_CTL_REG 0x0012
45/* Window size and position */
46#define WIN_ROWH_REG 0x0013
47#define WIN_ROWL_REG 0x0014
48#define WIN_COLH_REG 0x0015
49#define WIN_COLL_REG 0x0016
50#define WIN_HEIGHTH_REG 0x0017
51#define WIN_HEIGHTL_REG 0x0018
52#define WIN_WIDTHH_REG 0x0019
53#define WIN_WIDTHL_REG 0x001A
54#define HBLANKH_REG 0x001B
55#define HBLANKL_REG 0x001C
56#define VSYNCH_REG 0x001D
57#define VSYNCL_REG 0x001E
58/* VSYNC control */
59#define VS_CTL_REG(n) (0x00A1 + (n))
60/* page 1 */
61#define ISP_CTL_REG(n) (0x0110 + (n))
62#define YOFS_REG 0x0119
63#define DARK_YOFS_REG 0x011A
64#define SAT_CTL_REG 0x0120
65#define BSAT_REG 0x0121
66#define RSAT_REG 0x0122
67/* Color correction */
68#define CMC_CTL_REG 0x0130
69#define CMC_OFSGH_REG 0x0133
70#define CMC_OFSGL_REG 0x0135
71#define CMC_SIGN_REG 0x0136
72#define CMC_GOFS_REG 0x0137
73#define CMC_COEF_REG(n) (0x0138 + (n))
74#define CMC_OFS_REG(n) (0x0141 + (n))
75/* Gamma correction */
76#define GMA_CTL_REG 0x0160
77#define GMA_COEF_REG(n) (0x0161 + (n))
78/* Lens Shading */
79#define LENS_CTRL_REG 0x01D0
80#define LENS_XCEN_REG 0x01D1
81#define LENS_YCEN_REG 0x01D2
82#define LENS_RC_REG 0x01D3
83#define LENS_GC_REG 0x01D4
84#define LENS_BC_REG 0x01D5
85#define L_AGON_REG 0x01D6
86#define L_AGOFF_REG 0x01D7
87/* Page 3 - Auto Exposure */
88#define AE_CTL_REG(n) (0x0310 + (n))
89#define AE_CTL9_REG 0x032C
90#define AE_CTL10_REG 0x032D
91#define AE_YLVL_REG 0x031C
92#define AE_YTH_REG(n) (0x031D + (n))
93#define AE_WGT_REG 0x0326
94#define EXP_TIMEH_REG 0x0333
95#define EXP_TIMEM_REG 0x0334
96#define EXP_TIMEL_REG 0x0335
97#define EXP_MMINH_REG 0x0336
98#define EXP_MMINL_REG 0x0337
99#define EXP_MMAXH_REG 0x0338
100#define EXP_MMAXM_REG 0x0339
101#define EXP_MMAXL_REG 0x033A
102/* Page 4 - Auto White Balance */
103#define AWB_CTL_REG(n) (0x0410 + (n))
104#define AWB_ENABE 0x80
105#define AWB_WGHT_REG 0x0419
106#define BGAIN_PAR_REG(n) (0x044F + (n))
107/* Manual white balance, when AWB_CTL2[0]=1 */
108#define MWB_RGAIN_REG 0x0466
109#define MWB_BGAIN_REG 0x0467
110
111/* The token to mark an array end */
112#define REG_TERM 0xFFFF
113
114struct noon010_format {
115 enum v4l2_mbus_pixelcode code;
116 enum v4l2_colorspace colorspace;
117 u16 ispctl1_reg;
118};
119
120struct noon010_frmsize {
121 u16 width;
122 u16 height;
123 int vid_ctl1;
124};
125
126static const char * const noon010_supply_name[] = {
127 "vdd_core", "vddio", "vdda"
128};
129
130#define NOON010_NUM_SUPPLIES ARRAY_SIZE(noon010_supply_name)
131
132struct noon010_info {
133 struct v4l2_subdev sd;
134 struct v4l2_ctrl_handler hdl;
135 const struct noon010pc30_platform_data *pdata;
136 const struct noon010_format *curr_fmt;
137 const struct noon010_frmsize *curr_win;
138 unsigned int hflip:1;
139 unsigned int vflip:1;
140 unsigned int power:1;
141 u8 i2c_reg_page;
142 struct regulator_bulk_data supply[NOON010_NUM_SUPPLIES];
143 u32 gpio_nreset;
144 u32 gpio_nstby;
145};
146
147struct i2c_regval {
148 u16 addr;
149 u16 val;
150};
151
152/* Supported resolutions. */
153static const struct noon010_frmsize noon010_sizes[] = {
154 {
155 .width = 352,
156 .height = 288,
157 .vid_ctl1 = 0,
158 }, {
159 .width = 176,
160 .height = 144,
161 .vid_ctl1 = 0x10,
162 }, {
163 .width = 88,
164 .height = 72,
165 .vid_ctl1 = 0x20,
166 },
167};
168
169/* Supported pixel formats. */
170static const struct noon010_format noon010_formats[] = {
171 {
172 .code = V4L2_MBUS_FMT_YUYV8_2X8,
173 .colorspace = V4L2_COLORSPACE_JPEG,
174 .ispctl1_reg = 0x03,
175 }, {
176 .code = V4L2_MBUS_FMT_YVYU8_2X8,
177 .colorspace = V4L2_COLORSPACE_JPEG,
178 .ispctl1_reg = 0x02,
179 }, {
180 .code = V4L2_MBUS_FMT_VYUY8_2X8,
181 .colorspace = V4L2_COLORSPACE_JPEG,
182 .ispctl1_reg = 0,
183 }, {
184 .code = V4L2_MBUS_FMT_UYVY8_2X8,
185 .colorspace = V4L2_COLORSPACE_JPEG,
186 .ispctl1_reg = 0x01,
187 }, {
188 .code = V4L2_MBUS_FMT_RGB565_2X8_BE,
189 .colorspace = V4L2_COLORSPACE_JPEG,
190 .ispctl1_reg = 0x40,
191 },
192};
193
194static const struct i2c_regval noon010_base_regs[] = {
195 { WIN_COLL_REG, 0x06 }, { HBLANKL_REG, 0x7C },
196 /* Color corection and saturation */
197 { ISP_CTL_REG(0), 0x30 }, { ISP_CTL_REG(2), 0x30 },
198 { YOFS_REG, 0x80 }, { DARK_YOFS_REG, 0x04 },
199 { SAT_CTL_REG, 0x1F }, { BSAT_REG, 0x90 },
200 { CMC_CTL_REG, 0x0F }, { CMC_OFSGH_REG, 0x3C },
201 { CMC_OFSGL_REG, 0x2C }, { CMC_SIGN_REG, 0x3F },
202 { CMC_COEF_REG(0), 0x79 }, { CMC_OFS_REG(0), 0x00 },
203 { CMC_COEF_REG(1), 0x39 }, { CMC_OFS_REG(1), 0x00 },
204 { CMC_COEF_REG(2), 0x00 }, { CMC_OFS_REG(2), 0x00 },
205 { CMC_COEF_REG(3), 0x11 }, { CMC_OFS_REG(3), 0x8B },
206 { CMC_COEF_REG(4), 0x65 }, { CMC_OFS_REG(4), 0x07 },
207 { CMC_COEF_REG(5), 0x14 }, { CMC_OFS_REG(5), 0x04 },
208 { CMC_COEF_REG(6), 0x01 }, { CMC_OFS_REG(6), 0x9C },
209 { CMC_COEF_REG(7), 0x33 }, { CMC_OFS_REG(7), 0x89 },
210 { CMC_COEF_REG(8), 0x74 }, { CMC_OFS_REG(8), 0x25 },
211 /* Automatic white balance */
212 { AWB_CTL_REG(0), 0x78 }, { AWB_CTL_REG(1), 0x2E },
213 { AWB_CTL_REG(2), 0x20 }, { AWB_CTL_REG(3), 0x85 },
214 /* Auto exposure */
215 { AE_CTL_REG(0), 0xDC }, { AE_CTL_REG(1), 0x81 },
216 { AE_CTL_REG(2), 0x30 }, { AE_CTL_REG(3), 0xA5 },
217 { AE_CTL_REG(4), 0x40 }, { AE_CTL_REG(5), 0x51 },
218 { AE_CTL_REG(6), 0x33 }, { AE_CTL_REG(7), 0x7E },
219 { AE_CTL9_REG, 0x00 }, { AE_CTL10_REG, 0x02 },
220 { AE_YLVL_REG, 0x44 }, { AE_YTH_REG(0), 0x34 },
221 { AE_YTH_REG(1), 0x30 }, { AE_WGT_REG, 0xD5 },
222 /* Lens shading compensation */
223 { LENS_CTRL_REG, 0x01 }, { LENS_XCEN_REG, 0x80 },
224 { LENS_YCEN_REG, 0x70 }, { LENS_RC_REG, 0x53 },
225 { LENS_GC_REG, 0x40 }, { LENS_BC_REG, 0x3E },
226 { REG_TERM, 0 },
227};
228
229static inline struct noon010_info *to_noon010(struct v4l2_subdev *sd)
230{
231 return container_of(sd, struct noon010_info, sd);
232}
233
234static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
235{
236 return &container_of(ctrl->handler, struct noon010_info, hdl)->sd;
237}
238
239static inline int set_i2c_page(struct noon010_info *info,
240 struct i2c_client *client, unsigned int reg)
241{
242 u32 page = reg >> 8 & 0xFF;
243 int ret = 0;
244
245 if (info->i2c_reg_page != page && (reg & 0xFF) != 0x03) {
246 ret = i2c_smbus_write_byte_data(client, PAGEMODE_REG, page);
247 if (!ret)
248 info->i2c_reg_page = page;
249 }
250 return ret;
251}
252
253static int cam_i2c_read(struct v4l2_subdev *sd, u32 reg_addr)
254{
255 struct i2c_client *client = v4l2_get_subdevdata(sd);
256 struct noon010_info *info = to_noon010(sd);
257 int ret = set_i2c_page(info, client, reg_addr);
258
259 if (ret)
260 return ret;
261 return i2c_smbus_read_byte_data(client, reg_addr & 0xFF);
262}
263
264static int cam_i2c_write(struct v4l2_subdev *sd, u32 reg_addr, u32 val)
265{
266 struct i2c_client *client = v4l2_get_subdevdata(sd);
267 struct noon010_info *info = to_noon010(sd);
268 int ret = set_i2c_page(info, client, reg_addr);
269
270 if (ret)
271 return ret;
272 return i2c_smbus_write_byte_data(client, reg_addr & 0xFF, val);
273}
274
275static inline int noon010_bulk_write_reg(struct v4l2_subdev *sd,
276 const struct i2c_regval *msg)
277{
278 while (msg->addr != REG_TERM) {
279 int ret = cam_i2c_write(sd, msg->addr, msg->val);
280
281 if (ret)
282 return ret;
283 msg++;
284 }
285 return 0;
286}
287
288/* Device reset and sleep mode control */
289static int noon010_power_ctrl(struct v4l2_subdev *sd, bool reset, bool sleep)
290{
291 struct noon010_info *info = to_noon010(sd);
292 u8 reg = sleep ? 0xF1 : 0xF0;
293 int ret = 0;
294
295 if (reset)
296 ret = cam_i2c_write(sd, POWER_CTRL_REG, reg | 0x02);
297 if (!ret) {
298 ret = cam_i2c_write(sd, POWER_CTRL_REG, reg);
299 if (reset && !ret)
300 info->i2c_reg_page = -1;
301 }
302 return ret;
303}
304
305/* Automatic white balance control */
306static int noon010_enable_autowhitebalance(struct v4l2_subdev *sd, int on)
307{
308 int ret;
309
310 ret = cam_i2c_write(sd, AWB_CTL_REG(1), on ? 0x2E : 0x2F);
311 if (!ret)
312 ret = cam_i2c_write(sd, AWB_CTL_REG(0), on ? 0xFB : 0x7B);
313 return ret;
314}
315
316static int noon010_set_flip(struct v4l2_subdev *sd, int hflip, int vflip)
317{
318 struct noon010_info *info = to_noon010(sd);
319 int reg, ret;
320
321 reg = cam_i2c_read(sd, VDO_CTL_REG(1));
322 if (reg < 0)
323 return reg;
324
325 reg &= 0x7C;
326 if (hflip)
327 reg |= 0x01;
328 if (vflip)
329 reg |= 0x02;
330
331 ret = cam_i2c_write(sd, VDO_CTL_REG(1), reg | 0x80);
332 if (!ret) {
333 info->hflip = hflip;
334 info->vflip = vflip;
335 }
336 return ret;
337}
338
339/* Configure resolution and color format */
340static int noon010_set_params(struct v4l2_subdev *sd)
341{
342 struct noon010_info *info = to_noon010(sd);
343 int ret;
344
345 if (!info->curr_win)
346 return -EINVAL;
347
348 ret = cam_i2c_write(sd, VDO_CTL_REG(0), info->curr_win->vid_ctl1);
349
350 if (!ret && info->curr_fmt)
351 ret = cam_i2c_write(sd, ISP_CTL_REG(0),
352 info->curr_fmt->ispctl1_reg);
353 return ret;
354}
355
356/* Find nearest matching image pixel size. */
357static int noon010_try_frame_size(struct v4l2_mbus_framefmt *mf)
358{
359 unsigned int min_err = ~0;
360 int i = ARRAY_SIZE(noon010_sizes);
361 const struct noon010_frmsize *fsize = &noon010_sizes[0],
362 *match = NULL;
363
364 while (i--) {
365 int err = abs(fsize->width - mf->width)
366 + abs(fsize->height - mf->height);
367
368 if (err < min_err) {
369 min_err = err;
370 match = fsize;
371 }
372 fsize++;
373 }
374 if (match) {
375 mf->width = match->width;
376 mf->height = match->height;
377 return 0;
378 }
379 return -EINVAL;
380}
381
382static int power_enable(struct noon010_info *info)
383{
384 int ret;
385
386 if (info->power) {
387 v4l2_info(&info->sd, "%s: sensor is already on\n", __func__);
388 return 0;
389 }
390
391 if (gpio_is_valid(info->gpio_nstby))
392 gpio_set_value(info->gpio_nstby, 0);
393
394 if (gpio_is_valid(info->gpio_nreset))
395 gpio_set_value(info->gpio_nreset, 0);
396
397 ret = regulator_bulk_enable(NOON010_NUM_SUPPLIES, info->supply);
398 if (ret)
399 return ret;
400
401 if (gpio_is_valid(info->gpio_nreset)) {
402 msleep(50);
403 gpio_set_value(info->gpio_nreset, 1);
404 }
405 if (gpio_is_valid(info->gpio_nstby)) {
406 udelay(1000);
407 gpio_set_value(info->gpio_nstby, 1);
408 }
409 if (gpio_is_valid(info->gpio_nreset)) {
410 udelay(1000);
411 gpio_set_value(info->gpio_nreset, 0);
412 msleep(100);
413 gpio_set_value(info->gpio_nreset, 1);
414 msleep(20);
415 }
416 info->power = 1;
417
418 v4l2_dbg(1, debug, &info->sd, "%s: sensor is on\n", __func__);
419 return 0;
420}
421
422static int power_disable(struct noon010_info *info)
423{
424 int ret;
425
426 if (!info->power) {
427 v4l2_info(&info->sd, "%s: sensor is already off\n", __func__);
428 return 0;
429 }
430
431 ret = regulator_bulk_disable(NOON010_NUM_SUPPLIES, info->supply);
432 if (ret)
433 return ret;
434
435 if (gpio_is_valid(info->gpio_nstby))
436 gpio_set_value(info->gpio_nstby, 0);
437
438 if (gpio_is_valid(info->gpio_nreset))
439 gpio_set_value(info->gpio_nreset, 0);
440
441 info->power = 0;
442
443 v4l2_dbg(1, debug, &info->sd, "%s: sensor is off\n", __func__);
444
445 return 0;
446}
447
448static int noon010_s_ctrl(struct v4l2_ctrl *ctrl)
449{
450 struct v4l2_subdev *sd = to_sd(ctrl);
451
452 v4l2_dbg(1, debug, sd, "%s: ctrl_id: %d, value: %d\n",
453 __func__, ctrl->id, ctrl->val);
454
455 switch (ctrl->id) {
456 case V4L2_CID_AUTO_WHITE_BALANCE:
457 return noon010_enable_autowhitebalance(sd, ctrl->val);
458 case V4L2_CID_BLUE_BALANCE:
459 return cam_i2c_write(sd, MWB_BGAIN_REG, ctrl->val);
460 case V4L2_CID_RED_BALANCE:
461 return cam_i2c_write(sd, MWB_RGAIN_REG, ctrl->val);
462 default:
463 return -EINVAL;
464 }
465}
466
467static int noon010_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
468 enum v4l2_mbus_pixelcode *code)
469{
470 if (!code || index >= ARRAY_SIZE(noon010_formats))
471 return -EINVAL;
472
473 *code = noon010_formats[index].code;
474 return 0;
475}
476
477static int noon010_g_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *mf)
478{
479 struct noon010_info *info = to_noon010(sd);
480 int ret;
481
482 if (!mf)
483 return -EINVAL;
484
485 if (!info->curr_win || !info->curr_fmt) {
486 ret = noon010_set_params(sd);
487 if (ret)
488 return ret;
489 }
490
491 mf->width = info->curr_win->width;
492 mf->height = info->curr_win->height;
493 mf->code = info->curr_fmt->code;
494 mf->colorspace = info->curr_fmt->colorspace;
495 mf->field = V4L2_FIELD_NONE;
496
497 return 0;
498}
499
500/* Return nearest media bus frame format. */
501static const struct noon010_format *try_fmt(struct v4l2_subdev *sd,
502 struct v4l2_mbus_framefmt *mf)
503{
504 int i = ARRAY_SIZE(noon010_formats);
505
506 noon010_try_frame_size(mf);
507
508 while (i--)
509 if (mf->code == noon010_formats[i].code)
510 break;
511
512 mf->code = noon010_formats[i].code;
513
514 return &noon010_formats[i];
515}
516
517static int noon010_try_fmt(struct v4l2_subdev *sd,
518 struct v4l2_mbus_framefmt *mf)
519{
520 if (!sd || !mf)
521 return -EINVAL;
522
523 try_fmt(sd, mf);
524 return 0;
525}
526
527static int noon010_s_fmt(struct v4l2_subdev *sd,
528 struct v4l2_mbus_framefmt *mf)
529{
530 struct noon010_info *info = to_noon010(sd);
531
532 if (!sd || !mf)
533 return -EINVAL;
534
535 info->curr_fmt = try_fmt(sd, mf);
536
537 return noon010_set_params(sd);
538}
539
540static int noon010_base_config(struct v4l2_subdev *sd)
541{
542 struct noon010_info *info = to_noon010(sd);
543 int ret;
544
545 ret = noon010_bulk_write_reg(sd, noon010_base_regs);
546 if (!ret) {
547 info->curr_fmt = &noon010_formats[0];
548 info->curr_win = &noon010_sizes[0];
549 ret = noon010_set_params(sd);
550 }
551 if (!ret)
552 ret = noon010_set_flip(sd, 1, 0);
553 if (!ret)
554 ret = noon010_power_ctrl(sd, false, false);
555
556 /* sync the handler and the registers state */
557 v4l2_ctrl_handler_setup(&to_noon010(sd)->hdl);
558 return ret;
559}
560
561static int noon010_s_power(struct v4l2_subdev *sd, int on)
562{
563 struct noon010_info *info = to_noon010(sd);
564 const struct noon010pc30_platform_data *pdata = info->pdata;
565 int ret = 0;
566
567 if (WARN(pdata == NULL, "No platform data!\n"))
568 return -ENOMEM;
569
570 if (on) {
571 ret = power_enable(info);
572 if (ret)
573 return ret;
574 ret = noon010_base_config(sd);
575 } else {
576 noon010_power_ctrl(sd, false, true);
577 ret = power_disable(info);
578 info->curr_win = NULL;
579 info->curr_fmt = NULL;
580 }
581
582 return ret;
583}
584
585static int noon010_g_chip_ident(struct v4l2_subdev *sd,
586 struct v4l2_dbg_chip_ident *chip)
587{
588 struct i2c_client *client = v4l2_get_subdevdata(sd);
589
590 return v4l2_chip_ident_i2c_client(client, chip,
591 V4L2_IDENT_NOON010PC30, 0);
592}
593
594static int noon010_log_status(struct v4l2_subdev *sd)
595{
596 struct noon010_info *info = to_noon010(sd);
597
598 v4l2_ctrl_handler_log_status(&info->hdl, sd->name);
599 return 0;
600}
601
602static const struct v4l2_ctrl_ops noon010_ctrl_ops = {
603 .s_ctrl = noon010_s_ctrl,
604};
605
606static const struct v4l2_subdev_core_ops noon010_core_ops = {
607 .g_chip_ident = noon010_g_chip_ident,
608 .s_power = noon010_s_power,
609 .g_ctrl = v4l2_subdev_g_ctrl,
610 .s_ctrl = v4l2_subdev_s_ctrl,
611 .queryctrl = v4l2_subdev_queryctrl,
612 .querymenu = v4l2_subdev_querymenu,
613 .g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
614 .try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
615 .s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
616 .log_status = noon010_log_status,
617};
618
619static const struct v4l2_subdev_video_ops noon010_video_ops = {
620 .g_mbus_fmt = noon010_g_fmt,
621 .s_mbus_fmt = noon010_s_fmt,
622 .try_mbus_fmt = noon010_try_fmt,
623 .enum_mbus_fmt = noon010_enum_fmt,
624};
625
626static const struct v4l2_subdev_ops noon010_ops = {
627 .core = &noon010_core_ops,
628 .video = &noon010_video_ops,
629};
630
631/* Return 0 if NOON010PC30L sensor type was detected or -ENODEV otherwise. */
632static int noon010_detect(struct i2c_client *client, struct noon010_info *info)
633{
634 int ret;
635
636 ret = power_enable(info);
637 if (ret)
638 return ret;
639
640 ret = i2c_smbus_read_byte_data(client, DEVICE_ID_REG);
641 if (ret < 0)
642 dev_err(&client->dev, "I2C read failed: 0x%X\n", ret);
643
644 power_disable(info);
645
646 return ret == NOON010PC30_ID ? 0 : -ENODEV;
647}
648
649static int noon010_probe(struct i2c_client *client,
650 const struct i2c_device_id *id)
651{
652 struct noon010_info *info;
653 struct v4l2_subdev *sd;
654 const struct noon010pc30_platform_data *pdata
655 = client->dev.platform_data;
656 int ret;
657 int i;
658
659 if (!pdata) {
660 dev_err(&client->dev, "No platform data!\n");
661 return -EIO;
662 }
663
664 info = kzalloc(sizeof(*info), GFP_KERNEL);
665 if (!info)
666 return -ENOMEM;
667
668 sd = &info->sd;
669 strlcpy(sd->name, MODULE_NAME, sizeof(sd->name));
670 v4l2_i2c_subdev_init(sd, client, &noon010_ops);
671
672 v4l2_ctrl_handler_init(&info->hdl, 3);
673
674 v4l2_ctrl_new_std(&info->hdl, &noon010_ctrl_ops,
675 V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
676 v4l2_ctrl_new_std(&info->hdl, &noon010_ctrl_ops,
677 V4L2_CID_RED_BALANCE, 0, 127, 1, 64);
678 v4l2_ctrl_new_std(&info->hdl, &noon010_ctrl_ops,
679 V4L2_CID_BLUE_BALANCE, 0, 127, 1, 64);
680
681 sd->ctrl_handler = &info->hdl;
682
683 ret = info->hdl.error;
684 if (ret)
685 goto np_err;
686
687 info->pdata = client->dev.platform_data;
688 info->i2c_reg_page = -1;
689 info->gpio_nreset = -EINVAL;
690 info->gpio_nstby = -EINVAL;
691
692 if (gpio_is_valid(pdata->gpio_nreset)) {
693 ret = gpio_request(pdata->gpio_nreset, "NOON010PC30 NRST");
694 if (ret) {
695 dev_err(&client->dev, "GPIO request error: %d\n", ret);
696 goto np_err;
697 }
698 info->gpio_nreset = pdata->gpio_nreset;
699 gpio_direction_output(info->gpio_nreset, 0);
700 gpio_export(info->gpio_nreset, 0);
701 }
702
703 if (gpio_is_valid(pdata->gpio_nstby)) {
704 ret = gpio_request(pdata->gpio_nstby, "NOON010PC30 NSTBY");
705 if (ret) {
706 dev_err(&client->dev, "GPIO request error: %d\n", ret);
707 goto np_gpio_err;
708 }
709 info->gpio_nstby = pdata->gpio_nstby;
710 gpio_direction_output(info->gpio_nstby, 0);
711 gpio_export(info->gpio_nstby, 0);
712 }
713
714 for (i = 0; i < NOON010_NUM_SUPPLIES; i++)
715 info->supply[i].supply = noon010_supply_name[i];
716
717 ret = regulator_bulk_get(&client->dev, NOON010_NUM_SUPPLIES,
718 info->supply);
719 if (ret)
720 goto np_reg_err;
721
722 ret = noon010_detect(client, info);
723 if (!ret)
724 return 0;
725
726 /* the sensor detection failed */
727 regulator_bulk_free(NOON010_NUM_SUPPLIES, info->supply);
728np_reg_err:
729 if (gpio_is_valid(info->gpio_nstby))
730 gpio_free(info->gpio_nstby);
731np_gpio_err:
732 if (gpio_is_valid(info->gpio_nreset))
733 gpio_free(info->gpio_nreset);
734np_err:
735 v4l2_ctrl_handler_free(&info->hdl);
736 v4l2_device_unregister_subdev(sd);
737 kfree(info);
738 return ret;
739}
740
741static int noon010_remove(struct i2c_client *client)
742{
743 struct v4l2_subdev *sd = i2c_get_clientdata(client);
744 struct noon010_info *info = to_noon010(sd);
745
746 v4l2_device_unregister_subdev(sd);
747 v4l2_ctrl_handler_free(&info->hdl);
748
749 regulator_bulk_free(NOON010_NUM_SUPPLIES, info->supply);
750
751 if (gpio_is_valid(info->gpio_nreset))
752 gpio_free(info->gpio_nreset);
753
754 if (gpio_is_valid(info->gpio_nstby))
755 gpio_free(info->gpio_nstby);
756
757 kfree(info);
758 return 0;
759}
760
761static const struct i2c_device_id noon010_id[] = {
762 { MODULE_NAME, 0 },
763 { },
764};
765MODULE_DEVICE_TABLE(i2c, noon010_id);
766
767
768static struct i2c_driver noon010_i2c_driver = {
769 .driver = {
770 .name = MODULE_NAME
771 },
772 .probe = noon010_probe,
773 .remove = noon010_remove,
774 .id_table = noon010_id,
775};
776
777static int __init noon010_init(void)
778{
779 return i2c_add_driver(&noon010_i2c_driver);
780}
781
782static void __exit noon010_exit(void)
783{
784 i2c_del_driver(&noon010_i2c_driver);
785}
786
787module_init(noon010_init);
788module_exit(noon010_exit);
789
790MODULE_DESCRIPTION("Siliconfile NOON010PC30 camera driver");
791MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
792MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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