| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Sylwester Nawrocki | 3169 | 83.15% | 2 | 11.76% |
| Hans Verkuil | 578 | 15.17% | 5 | 29.41% |
| Dan Carpenter | 30 | 0.79% | 1 | 5.88% |
| Hans Petter Selasky | 12 | 0.31% | 1 | 5.88% |
| Boris Brezillon | 6 | 0.16% | 1 | 5.88% |
| Laurent Pinchart | 6 | 0.16% | 1 | 5.88% |
| Mauro Carvalho Chehab | 4 | 0.10% | 3 | 17.65% |
| Paul Gortmaker | 3 | 0.08% | 1 | 5.88% |
| Axel Lin | 2 | 0.05% | 1 | 5.88% |
| Joe Perches | 1 | 0.03% | 1 | 5.88% |
| Total | 3811 | 17 |
/* * Driver for SiliconFile SR030PC30 VGA (1/10-Inch) Image Sensor with ISP * * Copyright (C) 2010 Samsung Electronics Co., Ltd * Author: Sylwester Nawrocki, s.nawrocki@samsung.com * * Based on original driver authored by Dongsoo Nathaniel Kim * and HeungJun Kim <riverful.kim@samsung.com>. * * Based on mt9v011 Micron Digital Image Sensor driver * Copyright (c) 2009 Mauro Carvalho Chehab * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. */ #include <linux/i2c.h> #include <linux/delay.h> #include <linux/slab.h> #include <linux/module.h> #include <media/v4l2-device.h> #include <media/v4l2-subdev.h> #include <media/v4l2-mediabus.h> #include <media/v4l2-ctrls.h> #include <media/i2c/sr030pc30.h> static int debug; module_param(debug, int, 0644); #define MODULE_NAME "SR030PC30" /* * Register offsets within a page * b15..b8 - page id, b7..b0 - register address */ #define POWER_CTRL_REG 0x0001 #define PAGEMODE_REG 0x03 #define DEVICE_ID_REG 0x0004 #define NOON010PC30_ID 0x86 #define SR030PC30_ID 0x8C #define VDO_CTL1_REG 0x0010 #define SUBSAMPL_NONE_VGA 0 #define SUBSAMPL_QVGA 0x10 #define SUBSAMPL_QQVGA 0x20 #define VDO_CTL2_REG 0x0011 #define SYNC_CTL_REG 0x0012 #define WIN_ROWH_REG 0x0020 #define WIN_ROWL_REG 0x0021 #define WIN_COLH_REG 0x0022 #define WIN_COLL_REG 0x0023 #define WIN_HEIGHTH_REG 0x0024 #define WIN_HEIGHTL_REG 0x0025 #define WIN_WIDTHH_REG 0x0026 #define WIN_WIDTHL_REG 0x0027 #define HBLANKH_REG 0x0040 #define HBLANKL_REG 0x0041 #define VSYNCH_REG 0x0042 #define VSYNCL_REG 0x0043 /* page 10 */ #define ISP_CTL_REG(n) (0x1010 + (n)) #define YOFS_REG 0x1040 #define DARK_YOFS_REG 0x1041 #define AG_ABRTH_REG 0x1050 #define SAT_CTL_REG 0x1060 #define BSAT_REG 0x1061 #define RSAT_REG 0x1062 #define AG_SAT_TH_REG 0x1063 /* page 11 */ #define ZLPF_CTRL_REG 0x1110 #define ZLPF_CTRL2_REG 0x1112 #define ZLPF_AGH_THR_REG 0x1121 #define ZLPF_THR_REG 0x1160 #define ZLPF_DYN_THR_REG 0x1160 /* page 12 */ #define YCLPF_CTL1_REG 0x1240 #define YCLPF_CTL2_REG 0x1241 #define YCLPF_THR_REG 0x1250 #define BLPF_CTL_REG 0x1270 #define BLPF_THR1_REG 0x1274 #define BLPF_THR2_REG 0x1275 /* page 14 - Lens Shading Compensation */ #define LENS_CTRL_REG 0x1410 #define LENS_XCEN_REG 0x1420 #define LENS_YCEN_REG 0x1421 #define LENS_R_COMP_REG 0x1422 #define LENS_G_COMP_REG 0x1423 #define LENS_B_COMP_REG 0x1424 /* page 15 - Color correction */ #define CMC_CTL_REG 0x1510 #define CMC_OFSGH_REG 0x1514 #define CMC_OFSGL_REG 0x1516 #define CMC_SIGN_REG 0x1517 /* Color correction coefficients */ #define CMC_COEF_REG(n) (0x1530 + (n)) /* Color correction offset coefficients */ #define CMC_OFS_REG(n) (0x1540 + (n)) /* page 16 - Gamma correction */ #define GMA_CTL_REG 0x1610 /* Gamma correction coefficients 0.14 */ #define GMA_COEF_REG(n) (0x1630 + (n)) /* page 20 - Auto Exposure */ #define AE_CTL1_REG 0x2010 #define AE_CTL2_REG 0x2011 #define AE_FRM_CTL_REG 0x2020 #define AE_FINE_CTL_REG(n) (0x2028 + (n)) #define EXP_TIMEH_REG 0x2083 #define EXP_TIMEM_REG 0x2084 #define EXP_TIMEL_REG 0x2085 #define EXP_MMINH_REG 0x2086 #define EXP_MMINL_REG 0x2087 #define EXP_MMAXH_REG 0x2088 #define EXP_MMAXM_REG 0x2089 #define EXP_MMAXL_REG 0x208A /* page 22 - Auto White Balance */ #define AWB_CTL1_REG 0x2210 #define AWB_ENABLE 0x80 #define AWB_CTL2_REG 0x2211 #define MWB_ENABLE 0x01 /* RGB gain control (manual WB) when AWB_CTL1[7]=0 */ #define AWB_RGAIN_REG 0x2280 #define AWB_GGAIN_REG 0x2281 #define AWB_BGAIN_REG 0x2282 #define AWB_RMAX_REG 0x2283 #define AWB_RMIN_REG 0x2284 #define AWB_BMAX_REG 0x2285 #define AWB_BMIN_REG 0x2286 /* R, B gain range in bright light conditions */ #define AWB_RMAXB_REG 0x2287 #define AWB_RMINB_REG 0x2288 #define AWB_BMAXB_REG 0x2289 #define AWB_BMINB_REG 0x228A /* manual white balance, when AWB_CTL2[0]=1 */ #define MWB_RGAIN_REG 0x22B2 #define MWB_BGAIN_REG 0x22B3 /* the token to mark an array end */ #define REG_TERM 0xFFFF /* Minimum and maximum exposure time in ms */ #define EXPOS_MIN_MS 1 #define EXPOS_MAX_MS 125 struct sr030pc30_info { struct v4l2_subdev sd; struct v4l2_ctrl_handler hdl; const struct sr030pc30_platform_data *pdata; const struct sr030pc30_format *curr_fmt; const struct sr030pc30_frmsize *curr_win; unsigned int hflip:1; unsigned int vflip:1; unsigned int sleep:1; struct { /* auto whitebalance control cluster */ struct v4l2_ctrl *awb; struct v4l2_ctrl *red; struct v4l2_ctrl *blue; }; struct { /* auto exposure control cluster */ struct v4l2_ctrl *autoexp; struct v4l2_ctrl *exp; }; u8 i2c_reg_page; }; struct sr030pc30_format { u32 code; enum v4l2_colorspace colorspace; u16 ispctl1_reg; }; struct sr030pc30_frmsize { u16 width; u16 height; int vid_ctl1; }; struct i2c_regval { u16 addr; u16 val; }; /* supported resolutions */ static const struct sr030pc30_frmsize sr030pc30_sizes[] = { { .width = 640, .height = 480, .vid_ctl1 = SUBSAMPL_NONE_VGA, }, { .width = 320, .height = 240, .vid_ctl1 = SUBSAMPL_QVGA, }, { .width = 160, .height = 120, .vid_ctl1 = SUBSAMPL_QQVGA, }, }; /* supported pixel formats */ static const struct sr030pc30_format sr030pc30_formats[] = { { .code = MEDIA_BUS_FMT_YUYV8_2X8, .colorspace = V4L2_COLORSPACE_JPEG, .ispctl1_reg = 0x03, }, { .code = MEDIA_BUS_FMT_YVYU8_2X8, .colorspace = V4L2_COLORSPACE_JPEG, .ispctl1_reg = 0x02, }, { .code = MEDIA_BUS_FMT_VYUY8_2X8, .colorspace = V4L2_COLORSPACE_JPEG, .ispctl1_reg = 0, }, { .code = MEDIA_BUS_FMT_UYVY8_2X8, .colorspace = V4L2_COLORSPACE_JPEG, .ispctl1_reg = 0x01, }, { .code = MEDIA_BUS_FMT_RGB565_2X8_BE, .colorspace = V4L2_COLORSPACE_JPEG, .ispctl1_reg = 0x40, }, }; static const struct i2c_regval sr030pc30_base_regs[] = { /* Window size and position within pixel matrix */ { WIN_ROWH_REG, 0x00 }, { WIN_ROWL_REG, 0x06 }, { WIN_COLH_REG, 0x00 }, { WIN_COLL_REG, 0x06 }, { WIN_HEIGHTH_REG, 0x01 }, { WIN_HEIGHTL_REG, 0xE0 }, { WIN_WIDTHH_REG, 0x02 }, { WIN_WIDTHL_REG, 0x80 }, { HBLANKH_REG, 0x01 }, { HBLANKL_REG, 0x50 }, { VSYNCH_REG, 0x00 }, { VSYNCL_REG, 0x14 }, { SYNC_CTL_REG, 0 }, /* Color corection and saturation */ { ISP_CTL_REG(0), 0x30 }, { YOFS_REG, 0x80 }, { DARK_YOFS_REG, 0x04 }, { AG_ABRTH_REG, 0x78 }, { SAT_CTL_REG, 0x1F }, { BSAT_REG, 0x90 }, { AG_SAT_TH_REG, 0xF0 }, { 0x1064, 0x80 }, { CMC_CTL_REG, 0x03 }, { CMC_OFSGH_REG, 0x3C }, { CMC_OFSGL_REG, 0x2C }, { CMC_SIGN_REG, 0x2F }, { CMC_COEF_REG(0), 0xCB }, { CMC_OFS_REG(0), 0x87 }, { CMC_COEF_REG(1), 0x61 }, { CMC_OFS_REG(1), 0x18 }, { CMC_COEF_REG(2), 0x16 }, { CMC_OFS_REG(2), 0x91 }, { CMC_COEF_REG(3), 0x23 }, { CMC_OFS_REG(3), 0x94 }, { CMC_COEF_REG(4), 0xCE }, { CMC_OFS_REG(4), 0x9f }, { CMC_COEF_REG(5), 0x2B }, { CMC_OFS_REG(5), 0x33 }, { CMC_COEF_REG(6), 0x01 }, { CMC_OFS_REG(6), 0x00 }, { CMC_COEF_REG(7), 0x34 }, { CMC_OFS_REG(7), 0x94 }, { CMC_COEF_REG(8), 0x75 }, { CMC_OFS_REG(8), 0x14 }, /* Color corection coefficients */ { GMA_CTL_REG, 0x03 }, { GMA_COEF_REG(0), 0x00 }, { GMA_COEF_REG(1), 0x19 }, { GMA_COEF_REG(2), 0x26 }, { GMA_COEF_REG(3), 0x3B }, { GMA_COEF_REG(4), 0x5D }, { GMA_COEF_REG(5), 0x79 }, { GMA_COEF_REG(6), 0x8E }, { GMA_COEF_REG(7), 0x9F }, { GMA_COEF_REG(8), 0xAF }, { GMA_COEF_REG(9), 0xBD }, { GMA_COEF_REG(10), 0xCA }, { GMA_COEF_REG(11), 0xDD }, { GMA_COEF_REG(12), 0xEC }, { GMA_COEF_REG(13), 0xF7 }, { GMA_COEF_REG(14), 0xFF }, /* Noise reduction, Z-LPF, YC-LPF and BLPF filters setup */ { ZLPF_CTRL_REG, 0x99 }, { ZLPF_CTRL2_REG, 0x0E }, { ZLPF_AGH_THR_REG, 0x29 }, { ZLPF_THR_REG, 0x0F }, { ZLPF_DYN_THR_REG, 0x63 }, { YCLPF_CTL1_REG, 0x23 }, { YCLPF_CTL2_REG, 0x3B }, { YCLPF_THR_REG, 0x05 }, { BLPF_CTL_REG, 0x1D }, { BLPF_THR1_REG, 0x05 }, { BLPF_THR2_REG, 0x04 }, /* Automatic white balance */ { AWB_CTL1_REG, 0xFB }, { AWB_CTL2_REG, 0x26 }, { AWB_RMAX_REG, 0x54 }, { AWB_RMIN_REG, 0x2B }, { AWB_BMAX_REG, 0x57 }, { AWB_BMIN_REG, 0x29 }, { AWB_RMAXB_REG, 0x50 }, { AWB_RMINB_REG, 0x43 }, { AWB_BMAXB_REG, 0x30 }, { AWB_BMINB_REG, 0x22 }, /* Auto exposure */ { AE_CTL1_REG, 0x8C }, { AE_CTL2_REG, 0x04 }, { AE_FRM_CTL_REG, 0x01 }, { AE_FINE_CTL_REG(0), 0x3F }, { AE_FINE_CTL_REG(1), 0xA3 }, { AE_FINE_CTL_REG(3), 0x34 }, /* Lens shading compensation */ { LENS_CTRL_REG, 0x01 }, { LENS_XCEN_REG, 0x80 }, { LENS_YCEN_REG, 0x70 }, { LENS_R_COMP_REG, 0x53 }, { LENS_G_COMP_REG, 0x40 }, { LENS_B_COMP_REG, 0x3e }, { REG_TERM, 0 }, }; static inline struct sr030pc30_info *to_sr030pc30(struct v4l2_subdev *sd) { return container_of(sd, struct sr030pc30_info, sd); } static inline int set_i2c_page(struct sr030pc30_info *info, struct i2c_client *client, unsigned int reg) { int ret = 0; u32 page = reg >> 8 & 0xFF; if (info->i2c_reg_page != page && (reg & 0xFF) != 0x03) { ret = i2c_smbus_write_byte_data(client, PAGEMODE_REG, page); if (!ret) info->i2c_reg_page = page; } return ret; } static int cam_i2c_read(struct v4l2_subdev *sd, u32 reg_addr) { struct i2c_client *client = v4l2_get_subdevdata(sd); struct sr030pc30_info *info = to_sr030pc30(sd); int ret = set_i2c_page(info, client, reg_addr); if (!ret) ret = i2c_smbus_read_byte_data(client, reg_addr & 0xFF); return ret; } static int cam_i2c_write(struct v4l2_subdev *sd, u32 reg_addr, u32 val) { struct i2c_client *client = v4l2_get_subdevdata(sd); struct sr030pc30_info *info = to_sr030pc30(sd); int ret = set_i2c_page(info, client, reg_addr); if (!ret) ret = i2c_smbus_write_byte_data( client, reg_addr & 0xFF, val); return ret; } static inline int sr030pc30_bulk_write_reg(struct v4l2_subdev *sd, const struct i2c_regval *msg) { while (msg->addr != REG_TERM) { int ret = cam_i2c_write(sd, msg->addr, msg->val); if (ret) return ret; msg++; } return 0; } /* Device reset and sleep mode control */ static int sr030pc30_pwr_ctrl(struct v4l2_subdev *sd, bool reset, bool sleep) { struct sr030pc30_info *info = to_sr030pc30(sd); u8 reg = sleep ? 0xF1 : 0xF0; int ret = 0; if (reset) ret = cam_i2c_write(sd, POWER_CTRL_REG, reg | 0x02); if (!ret) { ret = cam_i2c_write(sd, POWER_CTRL_REG, reg); if (!ret) { info->sleep = sleep; if (reset) info->i2c_reg_page = -1; } } return ret; } static int sr030pc30_set_flip(struct v4l2_subdev *sd) { struct sr030pc30_info *info = to_sr030pc30(sd); s32 reg = cam_i2c_read(sd, VDO_CTL2_REG); if (reg < 0) return reg; reg &= 0x7C; if (info->hflip) reg |= 0x01; if (info->vflip) reg |= 0x02; return cam_i2c_write(sd, VDO_CTL2_REG, reg | 0x80); } /* Configure resolution, color format and image flip */ static int sr030pc30_set_params(struct v4l2_subdev *sd) { struct sr030pc30_info *info = to_sr030pc30(sd); int ret; if (!info->curr_win) return -EINVAL; /* Configure the resolution through subsampling */ ret = cam_i2c_write(sd, VDO_CTL1_REG, info->curr_win->vid_ctl1); if (!ret && info->curr_fmt) ret = cam_i2c_write(sd, ISP_CTL_REG(0), info->curr_fmt->ispctl1_reg); if (!ret) ret = sr030pc30_set_flip(sd); return ret; } /* Find nearest matching image pixel size. */ static int sr030pc30_try_frame_size(struct v4l2_mbus_framefmt *mf) { unsigned int min_err = ~0; int i = ARRAY_SIZE(sr030pc30_sizes); const struct sr030pc30_frmsize *fsize = &sr030pc30_sizes[0], *match = NULL; while (i--) { int err = abs(fsize->width - mf->width) + abs(fsize->height - mf->height); if (err < min_err) { min_err = err; match = fsize; } fsize++; } if (match) { mf->width = match->width; mf->height = match->height; return 0; } return -EINVAL; } static int sr030pc30_s_ctrl(struct v4l2_ctrl *ctrl) { struct sr030pc30_info *info = container_of(ctrl->handler, struct sr030pc30_info, hdl); struct v4l2_subdev *sd = &info->sd; int ret = 0; v4l2_dbg(1, debug, sd, "%s: ctrl_id: %d, value: %d\n", __func__, ctrl->id, ctrl->val); switch (ctrl->id) { case V4L2_CID_AUTO_WHITE_BALANCE: if (ctrl->is_new) { ret = cam_i2c_write(sd, AWB_CTL2_REG, ctrl->val ? 0x2E : 0x2F); if (!ret) ret = cam_i2c_write(sd, AWB_CTL1_REG, ctrl->val ? 0xFB : 0x7B); } if (!ret && info->blue->is_new) ret = cam_i2c_write(sd, MWB_BGAIN_REG, info->blue->val); if (!ret && info->red->is_new) ret = cam_i2c_write(sd, MWB_RGAIN_REG, info->red->val); return ret; case V4L2_CID_EXPOSURE_AUTO: /* auto anti-flicker is also enabled here */ if (ctrl->is_new) ret = cam_i2c_write(sd, AE_CTL1_REG, ctrl->val == V4L2_EXPOSURE_AUTO ? 0xDC : 0x0C); if (info->exp->is_new) { unsigned long expos = info->exp->val; expos = expos * info->pdata->clk_rate / (8 * 1000); if (!ret) ret = cam_i2c_write(sd, EXP_TIMEH_REG, expos >> 16 & 0xFF); if (!ret) ret = cam_i2c_write(sd, EXP_TIMEM_REG, expos >> 8 & 0xFF); if (!ret) ret = cam_i2c_write(sd, EXP_TIMEL_REG, expos & 0xFF); } return ret; default: return -EINVAL; } return 0; } static int sr030pc30_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_mbus_code_enum *code) { if (!code || code->pad || code->index >= ARRAY_SIZE(sr030pc30_formats)) return -EINVAL; code->code = sr030pc30_formats[code->index].code; return 0; } static int sr030pc30_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *format) { struct v4l2_mbus_framefmt *mf; struct sr030pc30_info *info = to_sr030pc30(sd); if (!format || format->pad) return -EINVAL; mf = &format->format; if (!info->curr_win || !info->curr_fmt) return -EINVAL; mf->width = info->curr_win->width; mf->height = info->curr_win->height; mf->code = info->curr_fmt->code; mf->colorspace = info->curr_fmt->colorspace; mf->field = V4L2_FIELD_NONE; return 0; } /* Return nearest media bus frame format. */ static const struct sr030pc30_format *try_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *mf) { int i; sr030pc30_try_frame_size(mf); for (i = 0; i < ARRAY_SIZE(sr030pc30_formats); i++) { if (mf->code == sr030pc30_formats[i].code) break; } if (i == ARRAY_SIZE(sr030pc30_formats)) i = 0; mf->code = sr030pc30_formats[i].code; return &sr030pc30_formats[i]; } /* Return nearest media bus frame format. */ static int sr030pc30_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *format) { struct sr030pc30_info *info = sd ? to_sr030pc30(sd) : NULL; const struct sr030pc30_format *fmt; struct v4l2_mbus_framefmt *mf; if (!sd || !format) return -EINVAL; mf = &format->format; if (format->pad) return -EINVAL; fmt = try_fmt(sd, mf); if (format->which == V4L2_SUBDEV_FORMAT_TRY) { cfg->try_fmt = *mf; return 0; } info->curr_fmt = fmt; return sr030pc30_set_params(sd); } static int sr030pc30_base_config(struct v4l2_subdev *sd) { struct sr030pc30_info *info = to_sr030pc30(sd); int ret; unsigned long expmin, expmax; ret = sr030pc30_bulk_write_reg(sd, sr030pc30_base_regs); if (!ret) { info->curr_fmt = &sr030pc30_formats[0]; info->curr_win = &sr030pc30_sizes[0]; ret = sr030pc30_set_params(sd); } if (!ret) ret = sr030pc30_pwr_ctrl(sd, false, false); if (ret) return ret; expmin = EXPOS_MIN_MS * info->pdata->clk_rate / (8 * 1000); expmax = EXPOS_MAX_MS * info->pdata->clk_rate / (8 * 1000); v4l2_dbg(1, debug, sd, "%s: expmin= %lx, expmax= %lx", __func__, expmin, expmax); /* Setting up manual exposure time range */ ret = cam_i2c_write(sd, EXP_MMINH_REG, expmin >> 8 & 0xFF); if (!ret) ret = cam_i2c_write(sd, EXP_MMINL_REG, expmin & 0xFF); if (!ret) ret = cam_i2c_write(sd, EXP_MMAXH_REG, expmax >> 16 & 0xFF); if (!ret) ret = cam_i2c_write(sd, EXP_MMAXM_REG, expmax >> 8 & 0xFF); if (!ret) ret = cam_i2c_write(sd, EXP_MMAXL_REG, expmax & 0xFF); return ret; } static int sr030pc30_s_power(struct v4l2_subdev *sd, int on) { struct i2c_client *client = v4l2_get_subdevdata(sd); struct sr030pc30_info *info = to_sr030pc30(sd); const struct sr030pc30_platform_data *pdata = info->pdata; int ret; if (pdata == NULL) { WARN(1, "No platform data!\n"); return -EINVAL; } /* * Put sensor into power sleep mode before switching off * power and disabling MCLK. */ if (!on) sr030pc30_pwr_ctrl(sd, false, true); /* set_power controls sensor's power and clock */ if (pdata->set_power) { ret = pdata->set_power(&client->dev, on); if (ret) return ret; } if (on) { ret = sr030pc30_base_config(sd); } else { ret = 0; info->curr_win = NULL; info->curr_fmt = NULL; } return ret; } static const struct v4l2_ctrl_ops sr030pc30_ctrl_ops = { .s_ctrl = sr030pc30_s_ctrl, }; static const struct v4l2_subdev_core_ops sr030pc30_core_ops = { .s_power = sr030pc30_s_power, }; static const struct v4l2_subdev_pad_ops sr030pc30_pad_ops = { .enum_mbus_code = sr030pc30_enum_mbus_code, .get_fmt = sr030pc30_get_fmt, .set_fmt = sr030pc30_set_fmt, }; static const struct v4l2_subdev_ops sr030pc30_ops = { .core = &sr030pc30_core_ops, .pad = &sr030pc30_pad_ops, }; /* * Detect sensor type. Return 0 if SR030PC30 was detected * or -ENODEV otherwise. */ static int sr030pc30_detect(struct i2c_client *client) { const struct sr030pc30_platform_data *pdata = client->dev.platform_data; int ret; /* Enable sensor's power and clock */ if (pdata->set_power) { ret = pdata->set_power(&client->dev, 1); if (ret) return ret; } ret = i2c_smbus_read_byte_data(client, DEVICE_ID_REG); if (pdata->set_power) pdata->set_power(&client->dev, 0); if (ret < 0) { dev_err(&client->dev, "%s: I2C read failed\n", __func__); return ret; } return ret == SR030PC30_ID ? 0 : -ENODEV; } static int sr030pc30_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct sr030pc30_info *info; struct v4l2_subdev *sd; struct v4l2_ctrl_handler *hdl; const struct sr030pc30_platform_data *pdata = client->dev.platform_data; int ret; if (!pdata) { dev_err(&client->dev, "No platform data!"); return -EIO; } ret = sr030pc30_detect(client); if (ret) return ret; info = devm_kzalloc(&client->dev, sizeof(*info), GFP_KERNEL); if (!info) return -ENOMEM; sd = &info->sd; info->pdata = client->dev.platform_data; v4l2_i2c_subdev_init(sd, client, &sr030pc30_ops); hdl = &info->hdl; v4l2_ctrl_handler_init(hdl, 6); info->awb = v4l2_ctrl_new_std(hdl, &sr030pc30_ctrl_ops, V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1); info->red = v4l2_ctrl_new_std(hdl, &sr030pc30_ctrl_ops, V4L2_CID_RED_BALANCE, 0, 127, 1, 64); info->blue = v4l2_ctrl_new_std(hdl, &sr030pc30_ctrl_ops, V4L2_CID_BLUE_BALANCE, 0, 127, 1, 64); info->autoexp = v4l2_ctrl_new_std(hdl, &sr030pc30_ctrl_ops, V4L2_CID_EXPOSURE_AUTO, 0, 1, 1, 1); info->exp = v4l2_ctrl_new_std(hdl, &sr030pc30_ctrl_ops, V4L2_CID_EXPOSURE, EXPOS_MIN_MS, EXPOS_MAX_MS, 1, 30); sd->ctrl_handler = hdl; if (hdl->error) { int err = hdl->error; v4l2_ctrl_handler_free(hdl); return err; } v4l2_ctrl_auto_cluster(3, &info->awb, 0, false); v4l2_ctrl_auto_cluster(2, &info->autoexp, V4L2_EXPOSURE_MANUAL, false); v4l2_ctrl_handler_setup(hdl); info->i2c_reg_page = -1; info->hflip = 1; return 0; } static int sr030pc30_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); v4l2_device_unregister_subdev(sd); v4l2_ctrl_handler_free(sd->ctrl_handler); return 0; } static const struct i2c_device_id sr030pc30_id[] = { { MODULE_NAME, 0 }, { }, }; MODULE_DEVICE_TABLE(i2c, sr030pc30_id); static struct i2c_driver sr030pc30_i2c_driver = { .driver = { .name = MODULE_NAME }, .probe = sr030pc30_probe, .remove = sr030pc30_remove, .id_table = sr030pc30_id, }; module_i2c_driver(sr030pc30_i2c_driver); MODULE_DESCRIPTION("Siliconfile SR030PC30 camera driver"); MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>"); MODULE_LICENSE("GPL");
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