2 * Driver for SiliconFile SR030PC30 VGA (1/10-Inch) Image Sensor with ISP
4 * Copyright (C) 2010 Samsung Electronics Co., Ltd
5 * Author: Sylwester Nawrocki, s.nawrocki@samsung.com
7 * Based on original driver authored by Dongsoo Nathaniel Kim
8 * and HeungJun Kim <riverful.kim@samsung.com>.
10 * Based on mt9v011 Micron Digital Image Sensor driver
11 * Copyright (c) 2009 Mauro Carvalho Chehab (mchehab@redhat.com)
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
19 #include <linux/i2c.h>
20 #include <linux/delay.h>
21 #include <linux/slab.h>
22 #include <media/v4l2-device.h>
23 #include <media/v4l2-subdev.h>
24 #include <media/v4l2-mediabus.h>
25 #include <media/sr030pc30.h>
28 module_param(debug, int, 0644);
30 #define MODULE_NAME "SR030PC30"
33 * Register offsets within a page
34 * b15..b8 - page id, b7..b0 - register address
36 #define POWER_CTRL_REG 0x0001
37 #define PAGEMODE_REG 0x03
38 #define DEVICE_ID_REG 0x0004
39 #define NOON010PC30_ID 0x86
40 #define SR030PC30_ID 0x8C
41 #define VDO_CTL1_REG 0x0010
42 #define SUBSAMPL_NONE_VGA 0
43 #define SUBSAMPL_QVGA 0x10
44 #define SUBSAMPL_QQVGA 0x20
45 #define VDO_CTL2_REG 0x0011
46 #define SYNC_CTL_REG 0x0012
47 #define WIN_ROWH_REG 0x0020
48 #define WIN_ROWL_REG 0x0021
49 #define WIN_COLH_REG 0x0022
50 #define WIN_COLL_REG 0x0023
51 #define WIN_HEIGHTH_REG 0x0024
52 #define WIN_HEIGHTL_REG 0x0025
53 #define WIN_WIDTHH_REG 0x0026
54 #define WIN_WIDTHL_REG 0x0027
55 #define HBLANKH_REG 0x0040
56 #define HBLANKL_REG 0x0041
57 #define VSYNCH_REG 0x0042
58 #define VSYNCL_REG 0x0043
60 #define ISP_CTL_REG(n) (0x1010 + (n))
61 #define YOFS_REG 0x1040
62 #define DARK_YOFS_REG 0x1041
63 #define AG_ABRTH_REG 0x1050
64 #define SAT_CTL_REG 0x1060
65 #define BSAT_REG 0x1061
66 #define RSAT_REG 0x1062
67 #define AG_SAT_TH_REG 0x1063
69 #define ZLPF_CTRL_REG 0x1110
70 #define ZLPF_CTRL2_REG 0x1112
71 #define ZLPF_AGH_THR_REG 0x1121
72 #define ZLPF_THR_REG 0x1160
73 #define ZLPF_DYN_THR_REG 0x1160
75 #define YCLPF_CTL1_REG 0x1240
76 #define YCLPF_CTL2_REG 0x1241
77 #define YCLPF_THR_REG 0x1250
78 #define BLPF_CTL_REG 0x1270
79 #define BLPF_THR1_REG 0x1274
80 #define BLPF_THR2_REG 0x1275
81 /* page 14 - Lens Shading Compensation */
82 #define LENS_CTRL_REG 0x1410
83 #define LENS_XCEN_REG 0x1420
84 #define LENS_YCEN_REG 0x1421
85 #define LENS_R_COMP_REG 0x1422
86 #define LENS_G_COMP_REG 0x1423
87 #define LENS_B_COMP_REG 0x1424
88 /* page 15 - Color correction */
89 #define CMC_CTL_REG 0x1510
90 #define CMC_OFSGH_REG 0x1514
91 #define CMC_OFSGL_REG 0x1516
92 #define CMC_SIGN_REG 0x1517
93 /* Color correction coefficients */
94 #define CMC_COEF_REG(n) (0x1530 + (n))
95 /* Color correction offset coefficients */
96 #define CMC_OFS_REG(n) (0x1540 + (n))
97 /* page 16 - Gamma correction */
98 #define GMA_CTL_REG 0x1610
99 /* Gamma correction coefficients 0.14 */
100 #define GMA_COEF_REG(n) (0x1630 + (n))
101 /* page 20 - Auto Exposure */
102 #define AE_CTL1_REG 0x2010
103 #define AE_CTL2_REG 0x2011
104 #define AE_FRM_CTL_REG 0x2020
105 #define AE_FINE_CTL_REG(n) (0x2028 + (n))
106 #define EXP_TIMEH_REG 0x2083
107 #define EXP_TIMEM_REG 0x2084
108 #define EXP_TIMEL_REG 0x2085
109 #define EXP_MMINH_REG 0x2086
110 #define EXP_MMINL_REG 0x2087
111 #define EXP_MMAXH_REG 0x2088
112 #define EXP_MMAXM_REG 0x2089
113 #define EXP_MMAXL_REG 0x208A
114 /* page 22 - Auto White Balance */
115 #define AWB_CTL1_REG 0x2210
116 #define AWB_ENABLE 0x80
117 #define AWB_CTL2_REG 0x2211
118 #define MWB_ENABLE 0x01
119 /* RGB gain control (manual WB) when AWB_CTL1[7]=0 */
120 #define AWB_RGAIN_REG 0x2280
121 #define AWB_GGAIN_REG 0x2281
122 #define AWB_BGAIN_REG 0x2282
123 #define AWB_RMAX_REG 0x2283
124 #define AWB_RMIN_REG 0x2284
125 #define AWB_BMAX_REG 0x2285
126 #define AWB_BMIN_REG 0x2286
127 /* R, B gain range in bright light conditions */
128 #define AWB_RMAXB_REG 0x2287
129 #define AWB_RMINB_REG 0x2288
130 #define AWB_BMAXB_REG 0x2289
131 #define AWB_BMINB_REG 0x228A
132 /* manual white balance, when AWB_CTL2[0]=1 */
133 #define MWB_RGAIN_REG 0x22B2
134 #define MWB_BGAIN_REG 0x22B3
135 /* the token to mark an array end */
136 #define REG_TERM 0xFFFF
138 /* Minimum and maximum exposure time in ms */
139 #define EXPOS_MIN_MS 1
140 #define EXPOS_MAX_MS 125
142 struct sr030pc30_info {
143 struct v4l2_subdev sd;
144 const struct sr030pc30_platform_data *pdata;
145 const struct sr030pc30_format *curr_fmt;
146 const struct sr030pc30_frmsize *curr_win;
147 unsigned int auto_wb:1;
148 unsigned int auto_exp:1;
149 unsigned int hflip:1;
150 unsigned int vflip:1;
151 unsigned int sleep:1;
152 unsigned int exposure;
158 struct sr030pc30_format {
159 enum v4l2_mbus_pixelcode code;
160 enum v4l2_colorspace colorspace;
164 struct sr030pc30_frmsize {
175 static const struct v4l2_queryctrl sr030pc30_ctrl[] = {
177 .id = V4L2_CID_AUTO_WHITE_BALANCE,
178 .type = V4L2_CTRL_TYPE_BOOLEAN,
179 .name = "Auto White Balance",
185 .id = V4L2_CID_RED_BALANCE,
186 .type = V4L2_CTRL_TYPE_INTEGER,
187 .name = "Red Balance",
194 .id = V4L2_CID_BLUE_BALANCE,
195 .type = V4L2_CTRL_TYPE_INTEGER,
196 .name = "Blue Balance",
202 .id = V4L2_CID_EXPOSURE_AUTO,
203 .type = V4L2_CTRL_TYPE_INTEGER,
204 .name = "Auto Exposure",
210 .id = V4L2_CID_EXPOSURE,
211 .type = V4L2_CTRL_TYPE_INTEGER,
213 .minimum = EXPOS_MIN_MS,
214 .maximum = EXPOS_MAX_MS,
221 /* supported resolutions */
222 static const struct sr030pc30_frmsize sr030pc30_sizes[] = {
226 .vid_ctl1 = SUBSAMPL_NONE_VGA,
230 .vid_ctl1 = SUBSAMPL_QVGA,
234 .vid_ctl1 = SUBSAMPL_QQVGA,
238 /* supported pixel formats */
239 static const struct sr030pc30_format sr030pc30_formats[] = {
241 .code = V4L2_MBUS_FMT_YUYV8_2X8,
242 .colorspace = V4L2_COLORSPACE_JPEG,
245 .code = V4L2_MBUS_FMT_YVYU8_2X8,
246 .colorspace = V4L2_COLORSPACE_JPEG,
249 .code = V4L2_MBUS_FMT_VYUY8_2X8,
250 .colorspace = V4L2_COLORSPACE_JPEG,
253 .code = V4L2_MBUS_FMT_UYVY8_2X8,
254 .colorspace = V4L2_COLORSPACE_JPEG,
257 .code = V4L2_MBUS_FMT_RGB565_2X8_BE,
258 .colorspace = V4L2_COLORSPACE_JPEG,
263 static const struct i2c_regval sr030pc30_base_regs[] = {
264 /* Window size and position within pixel matrix */
265 { WIN_ROWH_REG, 0x00 }, { WIN_ROWL_REG, 0x06 },
266 { WIN_COLH_REG, 0x00 }, { WIN_COLL_REG, 0x06 },
267 { WIN_HEIGHTH_REG, 0x01 }, { WIN_HEIGHTL_REG, 0xE0 },
268 { WIN_WIDTHH_REG, 0x02 }, { WIN_WIDTHL_REG, 0x80 },
269 { HBLANKH_REG, 0x01 }, { HBLANKL_REG, 0x50 },
270 { VSYNCH_REG, 0x00 }, { VSYNCL_REG, 0x14 },
272 /* Color corection and saturation */
273 { ISP_CTL_REG(0), 0x30 }, { YOFS_REG, 0x80 },
274 { DARK_YOFS_REG, 0x04 }, { AG_ABRTH_REG, 0x78 },
275 { SAT_CTL_REG, 0x1F }, { BSAT_REG, 0x90 },
276 { AG_SAT_TH_REG, 0xF0 }, { 0x1064, 0x80 },
277 { CMC_CTL_REG, 0x03 }, { CMC_OFSGH_REG, 0x3C },
278 { CMC_OFSGL_REG, 0x2C }, { CMC_SIGN_REG, 0x2F },
279 { CMC_COEF_REG(0), 0xCB }, { CMC_OFS_REG(0), 0x87 },
280 { CMC_COEF_REG(1), 0x61 }, { CMC_OFS_REG(1), 0x18 },
281 { CMC_COEF_REG(2), 0x16 }, { CMC_OFS_REG(2), 0x91 },
282 { CMC_COEF_REG(3), 0x23 }, { CMC_OFS_REG(3), 0x94 },
283 { CMC_COEF_REG(4), 0xCE }, { CMC_OFS_REG(4), 0x9f },
284 { CMC_COEF_REG(5), 0x2B }, { CMC_OFS_REG(5), 0x33 },
285 { CMC_COEF_REG(6), 0x01 }, { CMC_OFS_REG(6), 0x00 },
286 { CMC_COEF_REG(7), 0x34 }, { CMC_OFS_REG(7), 0x94 },
287 { CMC_COEF_REG(8), 0x75 }, { CMC_OFS_REG(8), 0x14 },
288 /* Color corection coefficients */
289 { GMA_CTL_REG, 0x03 }, { GMA_COEF_REG(0), 0x00 },
290 { GMA_COEF_REG(1), 0x19 }, { GMA_COEF_REG(2), 0x26 },
291 { GMA_COEF_REG(3), 0x3B }, { GMA_COEF_REG(4), 0x5D },
292 { GMA_COEF_REG(5), 0x79 }, { GMA_COEF_REG(6), 0x8E },
293 { GMA_COEF_REG(7), 0x9F }, { GMA_COEF_REG(8), 0xAF },
294 { GMA_COEF_REG(9), 0xBD }, { GMA_COEF_REG(10), 0xCA },
295 { GMA_COEF_REG(11), 0xDD }, { GMA_COEF_REG(12), 0xEC },
296 { GMA_COEF_REG(13), 0xF7 }, { GMA_COEF_REG(14), 0xFF },
297 /* Noise reduction, Z-LPF, YC-LPF and BLPF filters setup */
298 { ZLPF_CTRL_REG, 0x99 }, { ZLPF_CTRL2_REG, 0x0E },
299 { ZLPF_AGH_THR_REG, 0x29 }, { ZLPF_THR_REG, 0x0F },
300 { ZLPF_DYN_THR_REG, 0x63 }, { YCLPF_CTL1_REG, 0x23 },
301 { YCLPF_CTL2_REG, 0x3B }, { YCLPF_THR_REG, 0x05 },
302 { BLPF_CTL_REG, 0x1D }, { BLPF_THR1_REG, 0x05 },
303 { BLPF_THR2_REG, 0x04 },
304 /* Automatic white balance */
305 { AWB_CTL1_REG, 0xFB }, { AWB_CTL2_REG, 0x26 },
306 { AWB_RMAX_REG, 0x54 }, { AWB_RMIN_REG, 0x2B },
307 { AWB_BMAX_REG, 0x57 }, { AWB_BMIN_REG, 0x29 },
308 { AWB_RMAXB_REG, 0x50 }, { AWB_RMINB_REG, 0x43 },
309 { AWB_BMAXB_REG, 0x30 }, { AWB_BMINB_REG, 0x22 },
311 { AE_CTL1_REG, 0x8C }, { AE_CTL2_REG, 0x04 },
312 { AE_FRM_CTL_REG, 0x01 }, { AE_FINE_CTL_REG(0), 0x3F },
313 { AE_FINE_CTL_REG(1), 0xA3 }, { AE_FINE_CTL_REG(3), 0x34 },
314 /* Lens shading compensation */
315 { LENS_CTRL_REG, 0x01 }, { LENS_XCEN_REG, 0x80 },
316 { LENS_YCEN_REG, 0x70 }, { LENS_R_COMP_REG, 0x53 },
317 { LENS_G_COMP_REG, 0x40 }, { LENS_B_COMP_REG, 0x3e },
321 static inline struct sr030pc30_info *to_sr030pc30(struct v4l2_subdev *sd)
323 return container_of(sd, struct sr030pc30_info, sd);
326 static inline int set_i2c_page(struct sr030pc30_info *info,
327 struct i2c_client *client, unsigned int reg)
330 u32 page = reg >> 8 & 0xFF;
332 if (info->i2c_reg_page != page && (reg & 0xFF) != 0x03) {
333 ret = i2c_smbus_write_byte_data(client, PAGEMODE_REG, page);
335 info->i2c_reg_page = page;
340 static int cam_i2c_read(struct v4l2_subdev *sd, u32 reg_addr)
342 struct i2c_client *client = v4l2_get_subdevdata(sd);
343 struct sr030pc30_info *info = to_sr030pc30(sd);
345 int ret = set_i2c_page(info, client, reg_addr);
347 ret = i2c_smbus_read_byte_data(client, reg_addr & 0xFF);
351 static int cam_i2c_write(struct v4l2_subdev *sd, u32 reg_addr, u32 val)
353 struct i2c_client *client = v4l2_get_subdevdata(sd);
354 struct sr030pc30_info *info = to_sr030pc30(sd);
356 int ret = set_i2c_page(info, client, reg_addr);
358 ret = i2c_smbus_write_byte_data(
359 client, reg_addr & 0xFF, val);
363 static inline int sr030pc30_bulk_write_reg(struct v4l2_subdev *sd,
364 const struct i2c_regval *msg)
366 while (msg->addr != REG_TERM) {
367 int ret = cam_i2c_write(sd, msg->addr, msg->val);
375 /* Device reset and sleep mode control */
376 static int sr030pc30_pwr_ctrl(struct v4l2_subdev *sd,
377 bool reset, bool sleep)
379 struct sr030pc30_info *info = to_sr030pc30(sd);
380 u8 reg = sleep ? 0xF1 : 0xF0;
384 ret = cam_i2c_write(sd, POWER_CTRL_REG, reg | 0x02);
386 ret = cam_i2c_write(sd, POWER_CTRL_REG, reg);
390 info->i2c_reg_page = -1;
396 static inline int sr030pc30_enable_autoexposure(struct v4l2_subdev *sd, int on)
398 struct sr030pc30_info *info = to_sr030pc30(sd);
399 /* auto anti-flicker is also enabled here */
400 int ret = cam_i2c_write(sd, AE_CTL1_REG, on ? 0xDC : 0x0C);
406 static int sr030pc30_set_exposure(struct v4l2_subdev *sd, int value)
408 struct sr030pc30_info *info = to_sr030pc30(sd);
410 unsigned long expos = value * info->pdata->clk_rate / (8 * 1000);
412 int ret = cam_i2c_write(sd, EXP_TIMEH_REG, expos >> 16 & 0xFF);
414 ret = cam_i2c_write(sd, EXP_TIMEM_REG, expos >> 8 & 0xFF);
416 ret = cam_i2c_write(sd, EXP_TIMEL_REG, expos & 0xFF);
417 if (!ret) { /* Turn off AE */
418 info->exposure = value;
419 ret = sr030pc30_enable_autoexposure(sd, 0);
424 /* Automatic white balance control */
425 static int sr030pc30_enable_autowhitebalance(struct v4l2_subdev *sd, int on)
427 struct sr030pc30_info *info = to_sr030pc30(sd);
429 int ret = cam_i2c_write(sd, AWB_CTL2_REG, on ? 0x2E : 0x2F);
431 ret = cam_i2c_write(sd, AWB_CTL1_REG, on ? 0xFB : 0x7B);
438 static int sr030pc30_set_flip(struct v4l2_subdev *sd)
440 struct sr030pc30_info *info = to_sr030pc30(sd);
442 s32 reg = cam_i2c_read(sd, VDO_CTL2_REG);
451 return cam_i2c_write(sd, VDO_CTL2_REG, reg | 0x80);
454 /* Configure resolution, color format and image flip */
455 static int sr030pc30_set_params(struct v4l2_subdev *sd)
457 struct sr030pc30_info *info = to_sr030pc30(sd);
463 /* Configure the resolution through subsampling */
464 ret = cam_i2c_write(sd, VDO_CTL1_REG,
465 info->curr_win->vid_ctl1);
467 if (!ret && info->curr_fmt)
468 ret = cam_i2c_write(sd, ISP_CTL_REG(0),
469 info->curr_fmt->ispctl1_reg);
471 ret = sr030pc30_set_flip(sd);
476 /* Find nearest matching image pixel size. */
477 static int sr030pc30_try_frame_size(struct v4l2_mbus_framefmt *mf)
479 unsigned int min_err = ~0;
480 int i = ARRAY_SIZE(sr030pc30_sizes);
481 const struct sr030pc30_frmsize *fsize = &sr030pc30_sizes[0],
484 int err = abs(fsize->width - mf->width)
485 + abs(fsize->height - mf->height);
493 mf->width = match->width;
494 mf->height = match->height;
500 static int sr030pc30_queryctrl(struct v4l2_subdev *sd,
501 struct v4l2_queryctrl *qc)
505 for (i = 0; i < ARRAY_SIZE(sr030pc30_ctrl); i++)
506 if (qc->id == sr030pc30_ctrl[i].id) {
507 *qc = sr030pc30_ctrl[i];
508 v4l2_dbg(1, debug, sd, "%s id: %d\n",
516 static inline int sr030pc30_set_bluebalance(struct v4l2_subdev *sd, int value)
518 int ret = cam_i2c_write(sd, MWB_BGAIN_REG, value);
520 to_sr030pc30(sd)->blue_balance = value;
524 static inline int sr030pc30_set_redbalance(struct v4l2_subdev *sd, int value)
526 int ret = cam_i2c_write(sd, MWB_RGAIN_REG, value);
528 to_sr030pc30(sd)->red_balance = value;
532 static int sr030pc30_s_ctrl(struct v4l2_subdev *sd,
533 struct v4l2_control *ctrl)
537 for (i = 0; i < ARRAY_SIZE(sr030pc30_ctrl); i++)
538 if (ctrl->id == sr030pc30_ctrl[i].id)
541 if (i == ARRAY_SIZE(sr030pc30_ctrl))
544 if (ctrl->value < sr030pc30_ctrl[i].minimum ||
545 ctrl->value > sr030pc30_ctrl[i].maximum)
548 v4l2_dbg(1, debug, sd, "%s: ctrl_id: %d, value: %d\n",
549 __func__, ctrl->id, ctrl->value);
552 case V4L2_CID_AUTO_WHITE_BALANCE:
553 sr030pc30_enable_autowhitebalance(sd, ctrl->value);
555 case V4L2_CID_BLUE_BALANCE:
556 ret = sr030pc30_set_bluebalance(sd, ctrl->value);
558 case V4L2_CID_RED_BALANCE:
559 ret = sr030pc30_set_redbalance(sd, ctrl->value);
561 case V4L2_CID_EXPOSURE_AUTO:
562 sr030pc30_enable_autoexposure(sd,
563 ctrl->value == V4L2_EXPOSURE_AUTO);
565 case V4L2_CID_EXPOSURE:
566 ret = sr030pc30_set_exposure(sd, ctrl->value);
575 static int sr030pc30_g_ctrl(struct v4l2_subdev *sd,
576 struct v4l2_control *ctrl)
578 struct sr030pc30_info *info = to_sr030pc30(sd);
580 v4l2_dbg(1, debug, sd, "%s: id: %d\n", __func__, ctrl->id);
583 case V4L2_CID_AUTO_WHITE_BALANCE:
584 ctrl->value = info->auto_wb;
586 case V4L2_CID_BLUE_BALANCE:
587 ctrl->value = info->blue_balance;
589 case V4L2_CID_RED_BALANCE:
590 ctrl->value = info->red_balance;
592 case V4L2_CID_EXPOSURE_AUTO:
593 ctrl->value = info->auto_exp;
595 case V4L2_CID_EXPOSURE:
596 ctrl->value = info->exposure;
604 static int sr030pc30_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
605 enum v4l2_mbus_pixelcode *code)
607 if (!code || index >= ARRAY_SIZE(sr030pc30_formats))
610 *code = sr030pc30_formats[index].code;
614 static int sr030pc30_g_fmt(struct v4l2_subdev *sd,
615 struct v4l2_mbus_framefmt *mf)
617 struct sr030pc30_info *info = to_sr030pc30(sd);
623 if (!info->curr_win || !info->curr_fmt) {
624 ret = sr030pc30_set_params(sd);
629 mf->width = info->curr_win->width;
630 mf->height = info->curr_win->height;
631 mf->code = info->curr_fmt->code;
632 mf->colorspace = info->curr_fmt->colorspace;
633 mf->field = V4L2_FIELD_NONE;
638 /* Return nearest media bus frame format. */
639 static const struct sr030pc30_format *try_fmt(struct v4l2_subdev *sd,
640 struct v4l2_mbus_framefmt *mf)
642 int i = ARRAY_SIZE(sr030pc30_formats);
644 sr030pc30_try_frame_size(mf);
647 if (mf->code == sr030pc30_formats[i].code)
650 mf->code = sr030pc30_formats[i].code;
652 return &sr030pc30_formats[i];
655 /* Return nearest media bus frame format. */
656 static int sr030pc30_try_fmt(struct v4l2_subdev *sd,
657 struct v4l2_mbus_framefmt *mf)
666 static int sr030pc30_s_fmt(struct v4l2_subdev *sd,
667 struct v4l2_mbus_framefmt *mf)
669 struct sr030pc30_info *info = to_sr030pc30(sd);
674 info->curr_fmt = try_fmt(sd, mf);
676 return sr030pc30_set_params(sd);
679 static int sr030pc30_base_config(struct v4l2_subdev *sd)
681 struct sr030pc30_info *info = to_sr030pc30(sd);
683 unsigned long expmin, expmax;
685 ret = sr030pc30_bulk_write_reg(sd, sr030pc30_base_regs);
687 info->curr_fmt = &sr030pc30_formats[0];
688 info->curr_win = &sr030pc30_sizes[0];
689 ret = sr030pc30_set_params(sd);
692 ret = sr030pc30_pwr_ctrl(sd, false, false);
694 if (!ret && !info->pdata)
697 expmin = EXPOS_MIN_MS * info->pdata->clk_rate / (8 * 1000);
698 expmax = EXPOS_MAX_MS * info->pdata->clk_rate / (8 * 1000);
700 v4l2_dbg(1, debug, sd, "%s: expmin= %lx, expmax= %lx", __func__,
703 /* Setting up manual exposure time range */
704 ret = cam_i2c_write(sd, EXP_MMINH_REG, expmin >> 8 & 0xFF);
706 ret = cam_i2c_write(sd, EXP_MMINL_REG, expmin & 0xFF);
708 ret = cam_i2c_write(sd, EXP_MMAXH_REG, expmax >> 16 & 0xFF);
710 ret = cam_i2c_write(sd, EXP_MMAXM_REG, expmax >> 8 & 0xFF);
712 ret = cam_i2c_write(sd, EXP_MMAXL_REG, expmax & 0xFF);
717 static int sr030pc30_s_stream(struct v4l2_subdev *sd, int enable)
722 static int sr030pc30_s_power(struct v4l2_subdev *sd, int on)
724 struct i2c_client *client = v4l2_get_subdevdata(sd);
725 struct sr030pc30_info *info = to_sr030pc30(sd);
726 const struct sr030pc30_platform_data *pdata = info->pdata;
729 if (WARN(pdata == NULL, "No platform data!\n"))
733 * Put sensor into power sleep mode before switching off
734 * power and disabling MCLK.
737 sr030pc30_pwr_ctrl(sd, false, true);
739 /* set_power controls sensor's power and clock */
740 if (pdata->set_power) {
741 ret = pdata->set_power(&client->dev, on);
747 ret = sr030pc30_base_config(sd);
749 info->curr_win = NULL;
750 info->curr_fmt = NULL;
756 static const struct v4l2_subdev_core_ops sr030pc30_core_ops = {
757 .s_power = sr030pc30_s_power,
758 .queryctrl = sr030pc30_queryctrl,
759 .s_ctrl = sr030pc30_s_ctrl,
760 .g_ctrl = sr030pc30_g_ctrl,
763 static const struct v4l2_subdev_video_ops sr030pc30_video_ops = {
764 .s_stream = sr030pc30_s_stream,
765 .g_mbus_fmt = sr030pc30_g_fmt,
766 .s_mbus_fmt = sr030pc30_s_fmt,
767 .try_mbus_fmt = sr030pc30_try_fmt,
768 .enum_mbus_fmt = sr030pc30_enum_fmt,
771 static const struct v4l2_subdev_ops sr030pc30_ops = {
772 .core = &sr030pc30_core_ops,
773 .video = &sr030pc30_video_ops,
777 * Detect sensor type. Return 0 if SR030PC30 was detected
778 * or -ENODEV otherwise.
780 static int sr030pc30_detect(struct i2c_client *client)
782 const struct sr030pc30_platform_data *pdata
783 = client->dev.platform_data;
786 /* Enable sensor's power and clock */
787 if (pdata->set_power) {
788 ret = pdata->set_power(&client->dev, 1);
793 ret = i2c_smbus_read_byte_data(client, DEVICE_ID_REG);
795 if (pdata->set_power)
796 pdata->set_power(&client->dev, 0);
799 dev_err(&client->dev, "%s: I2C read failed\n", __func__);
803 return ret == SR030PC30_ID ? 0 : -ENODEV;
807 static int sr030pc30_probe(struct i2c_client *client,
808 const struct i2c_device_id *id)
810 struct sr030pc30_info *info;
811 struct v4l2_subdev *sd;
812 const struct sr030pc30_platform_data *pdata
813 = client->dev.platform_data;
817 dev_err(&client->dev, "No platform data!");
821 ret = sr030pc30_detect(client);
825 info = kzalloc(sizeof(*info), GFP_KERNEL);
830 strcpy(sd->name, MODULE_NAME);
831 info->pdata = client->dev.platform_data;
833 v4l2_i2c_subdev_init(sd, client, &sr030pc30_ops);
835 info->i2c_reg_page = -1;
843 static int sr030pc30_remove(struct i2c_client *client)
845 struct v4l2_subdev *sd = i2c_get_clientdata(client);
846 struct sr030pc30_info *info = to_sr030pc30(sd);
848 v4l2_device_unregister_subdev(sd);
853 static const struct i2c_device_id sr030pc30_id[] = {
857 MODULE_DEVICE_TABLE(i2c, sr030pc30_id);
860 static struct i2c_driver sr030pc30_i2c_driver = {
864 .probe = sr030pc30_probe,
865 .remove = sr030pc30_remove,
866 .id_table = sr030pc30_id,
869 static int __init sr030pc30_init(void)
871 return i2c_add_driver(&sr030pc30_i2c_driver);
874 static void __exit sr030pc30_exit(void)
876 i2c_del_driver(&sr030pc30_i2c_driver);
879 module_init(sr030pc30_init);
880 module_exit(sr030pc30_exit);
882 MODULE_DESCRIPTION("Siliconfile SR030PC30 camera driver");
883 MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
884 MODULE_LICENSE("GPL");