diff options
Diffstat (limited to 'drivers/media/i2c/noon010pc30.c')
| -rw-r--r-- | drivers/media/i2c/noon010pc30.c | 851 |
1 files changed, 851 insertions, 0 deletions
diff --git a/drivers/media/i2c/noon010pc30.c b/drivers/media/i2c/noon010pc30.c new file mode 100644 index 00000000000..440c12962ba --- /dev/null +++ b/drivers/media/i2c/noon010pc30.c @@ -0,0 +1,851 @@ +/* + * Driver for SiliconFile NOON010PC30 CIF (1/11") Image Sensor with ISP + * + * Copyright (C) 2010 - 2011 Samsung Electronics Co., Ltd. + * Contact: Sylwester Nawrocki, <s.nawrocki@samsung.com> + * + * Initial register configuration based on a driver authored by + * HeungJun Kim <riverful.kim@samsung.com>. + * + * 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/delay.h> +#include <linux/gpio.h> +#include <linux/i2c.h> +#include <linux/slab.h> +#include <linux/regulator/consumer.h> +#include <media/noon010pc30.h> +#include <media/v4l2-chip-ident.h> +#include <linux/videodev2.h> +#include <linux/module.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-device.h> +#include <media/v4l2-mediabus.h> +#include <media/v4l2-subdev.h> + +static int debug; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "Enable module debug trace. Set to 1 to enable."); + +#define MODULE_NAME "NOON010PC30" + +/* + * 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 VDO_CTL_REG(n) (0x0010 + (n)) +#define SYNC_CTL_REG 0x0012 +/* Window size and position */ +#define WIN_ROWH_REG 0x0013 +#define WIN_ROWL_REG 0x0014 +#define WIN_COLH_REG 0x0015 +#define WIN_COLL_REG 0x0016 +#define WIN_HEIGHTH_REG 0x0017 +#define WIN_HEIGHTL_REG 0x0018 +#define WIN_WIDTHH_REG 0x0019 +#define WIN_WIDTHL_REG 0x001A +#define HBLANKH_REG 0x001B +#define HBLANKL_REG 0x001C +#define VSYNCH_REG 0x001D +#define VSYNCL_REG 0x001E +/* VSYNC control */ +#define VS_CTL_REG(n) (0x00A1 + (n)) +/* page 1 */ +#define ISP_CTL_REG(n) (0x0110 + (n)) +#define YOFS_REG 0x0119 +#define DARK_YOFS_REG 0x011A +#define SAT_CTL_REG 0x0120 +#define BSAT_REG 0x0121 +#define RSAT_REG 0x0122 +/* Color correction */ +#define CMC_CTL_REG 0x0130 +#define CMC_OFSGH_REG 0x0133 +#define CMC_OFSGL_REG 0x0135 +#define CMC_SIGN_REG 0x0136 +#define CMC_GOFS_REG 0x0137 +#define CMC_COEF_REG(n) (0x0138 + (n)) +#define CMC_OFS_REG(n) (0x0141 + (n)) +/* Gamma correction */ +#define GMA_CTL_REG 0x0160 +#define GMA_COEF_REG(n) (0x0161 + (n)) +/* Lens Shading */ +#define LENS_CTRL_REG 0x01D0 +#define LENS_XCEN_REG 0x01D1 +#define LENS_YCEN_REG 0x01D2 +#define LENS_RC_REG 0x01D3 +#define LENS_GC_REG 0x01D4 +#define LENS_BC_REG 0x01D5 +#define L_AGON_REG 0x01D6 +#define L_AGOFF_REG 0x01D7 +/* Page 3 - Auto Exposure */ +#define AE_CTL_REG(n) (0x0310 + (n)) +#define AE_CTL9_REG 0x032C +#define AE_CTL10_REG 0x032D +#define AE_YLVL_REG 0x031C +#define AE_YTH_REG(n) (0x031D + (n)) +#define AE_WGT_REG 0x0326 +#define EXP_TIMEH_REG 0x0333 +#define EXP_TIMEM_REG 0x0334 +#define EXP_TIMEL_REG 0x0335 +#define EXP_MMINH_REG 0x0336 +#define EXP_MMINL_REG 0x0337 +#define EXP_MMAXH_REG 0x0338 +#define EXP_MMAXM_REG 0x0339 +#define EXP_MMAXL_REG 0x033A +/* Page 4 - Auto White Balance */ +#define AWB_CTL_REG(n) (0x0410 + (n)) +#define AWB_ENABE 0x80 +#define AWB_WGHT_REG 0x0419 +#define BGAIN_PAR_REG(n) (0x044F + (n)) +/* Manual white balance, when AWB_CTL2[0]=1 */ +#define MWB_RGAIN_REG 0x0466 +#define MWB_BGAIN_REG 0x0467 + +/* The token to mark an array end */ +#define REG_TERM 0xFFFF + +struct noon010_format { + enum v4l2_mbus_pixelcode code; + enum v4l2_colorspace colorspace; + u16 ispctl1_reg; +}; + +struct noon010_frmsize { + u16 width; + u16 height; + int vid_ctl1; +}; + +static const char * const noon010_supply_name[] = { + "vdd_core", "vddio", "vdda" +}; + +#define NOON010_NUM_SUPPLIES ARRAY_SIZE(noon010_supply_name) + +struct noon010_info { + struct v4l2_subdev sd; + struct media_pad pad; + struct v4l2_ctrl_handler hdl; + struct regulator_bulk_data supply[NOON010_NUM_SUPPLIES]; + u32 gpio_nreset; + u32 gpio_nstby; + + /* Protects the struct members below */ + struct mutex lock; + + const struct noon010_format *curr_fmt; + const struct noon010_frmsize *curr_win; + unsigned int apply_new_cfg:1; + unsigned int streaming:1; + unsigned int hflip:1; + unsigned int vflip:1; + unsigned int power:1; + u8 i2c_reg_page; +}; + +struct i2c_regval { + u16 addr; + u16 val; +}; + +/* Supported resolutions. */ +static const struct noon010_frmsize noon010_sizes[] = { + { + .width = 352, + .height = 288, + .vid_ctl1 = 0, + }, { + .width = 176, + .height = 144, + .vid_ctl1 = 0x10, + }, { + .width = 88, + .height = 72, + .vid_ctl1 = 0x20, + }, +}; + +/* Supported pixel formats. */ +static const struct noon010_format noon010_formats[] = { + { + .code = V4L2_MBUS_FMT_YUYV8_2X8, + .colorspace = V4L2_COLORSPACE_JPEG, + .ispctl1_reg = 0x03, + }, { + .code = V4L2_MBUS_FMT_YVYU8_2X8, + .colorspace = V4L2_COLORSPACE_JPEG, + .ispctl1_reg = 0x02, + }, { + .code = V4L2_MBUS_FMT_VYUY8_2X8, + .colorspace = V4L2_COLORSPACE_JPEG, + .ispctl1_reg = 0, + }, { + .code = V4L2_MBUS_FMT_UYVY8_2X8, + .colorspace = V4L2_COLORSPACE_JPEG, + .ispctl1_reg = 0x01, + }, { + .code = V4L2_MBUS_FMT_RGB565_2X8_BE, + .colorspace = V4L2_COLORSPACE_JPEG, + .ispctl1_reg = 0x40, + }, +}; + +static const struct i2c_regval noon010_base_regs[] = { + { WIN_COLL_REG, 0x06 }, { HBLANKL_REG, 0x7C }, + /* Color corection and saturation */ + { ISP_CTL_REG(0), 0x30 }, { ISP_CTL_REG(2), 0x30 }, + { YOFS_REG, 0x80 }, { DARK_YOFS_REG, 0x04 }, + { SAT_CTL_REG, 0x1F }, { BSAT_REG, 0x90 }, + { CMC_CTL_REG, 0x0F }, { CMC_OFSGH_REG, 0x3C }, + { CMC_OFSGL_REG, 0x2C }, { CMC_SIGN_REG, 0x3F }, + { CMC_COEF_REG(0), 0x79 }, { CMC_OFS_REG(0), 0x00 }, + { CMC_COEF_REG(1), 0x39 }, { CMC_OFS_REG(1), 0x00 }, + { CMC_COEF_REG(2), 0x00 }, { CMC_OFS_REG(2), 0x00 }, + { CMC_COEF_REG(3), 0x11 }, { CMC_OFS_REG(3), 0x8B }, + { CMC_COEF_REG(4), 0x65 }, { CMC_OFS_REG(4), 0x07 }, + { CMC_COEF_REG(5), 0x14 }, { CMC_OFS_REG(5), 0x04 }, + { CMC_COEF_REG(6), 0x01 }, { CMC_OFS_REG(6), 0x9C }, + { CMC_COEF_REG(7), 0x33 }, { CMC_OFS_REG(7), 0x89 }, + { CMC_COEF_REG(8), 0x74 }, { CMC_OFS_REG(8), 0x25 }, + /* Automatic white balance */ + { AWB_CTL_REG(0), 0x78 }, { AWB_CTL_REG(1), 0x2E }, + { AWB_CTL_REG(2), 0x20 }, { AWB_CTL_REG(3), 0x85 }, + /* Auto exposure */ + { AE_CTL_REG(0), 0xDC }, { AE_CTL_REG(1), 0x81 }, + { AE_CTL_REG(2), 0x30 }, { AE_CTL_REG(3), 0xA5 }, + { AE_CTL_REG(4), 0x40 }, { AE_CTL_REG(5), 0x51 }, + { AE_CTL_REG(6), 0x33 }, { AE_CTL_REG(7), 0x7E }, + { AE_CTL9_REG, 0x00 }, { AE_CTL10_REG, 0x02 }, + { AE_YLVL_REG, 0x44 }, { AE_YTH_REG(0), 0x34 }, + { AE_YTH_REG(1), 0x30 }, { AE_WGT_REG, 0xD5 }, + /* Lens shading compensation */ + { LENS_CTRL_REG, 0x01 }, { LENS_XCEN_REG, 0x80 }, + { LENS_YCEN_REG, 0x70 }, { LENS_RC_REG, 0x53 }, + { LENS_GC_REG, 0x40 }, { LENS_BC_REG, 0x3E }, + { REG_TERM, 0 }, +}; + +static inline struct noon010_info *to_noon010(struct v4l2_subdev *sd) +{ + return container_of(sd, struct noon010_info, sd); +} + +static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) +{ + return &container_of(ctrl->handler, struct noon010_info, hdl)->sd; +} + +static inline int set_i2c_page(struct noon010_info *info, + struct i2c_client *client, unsigned int reg) +{ + u32 page = reg >> 8 & 0xFF; + int ret = 0; + + 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 noon010_info *info = to_noon010(sd); + int ret = set_i2c_page(info, client, reg_addr); + + if (ret) + return ret; + return i2c_smbus_read_byte_data(client, reg_addr & 0xFF); +} + +static int cam_i2c_write(struct v4l2_subdev *sd, u32 reg_addr, u32 val) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct noon010_info *info = to_noon010(sd); + int ret = set_i2c_page(info, client, reg_addr); + + if (ret) + return ret; + return i2c_smbus_write_byte_data(client, reg_addr & 0xFF, val); +} + +static inline int noon010_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 noon010_power_ctrl(struct v4l2_subdev *sd, bool reset, bool sleep) +{ + struct noon010_info *info = to_noon010(sd); + u8 reg = sleep ? 0xF1 : 0xF0; + int ret = 0; + + if (reset) { + ret = cam_i2c_write(sd, POWER_CTRL_REG, reg | 0x02); + udelay(20); + } + if (!ret) { + ret = cam_i2c_write(sd, POWER_CTRL_REG, reg); + if (reset && !ret) + info->i2c_reg_page = -1; + } + return ret; +} + +/* Automatic white balance control */ +static int noon010_enable_autowhitebalance(struct v4l2_subdev *sd, int on) +{ + int ret; + + ret = cam_i2c_write(sd, AWB_CTL_REG(1), on ? 0x2E : 0x2F); + if (!ret) + ret = cam_i2c_write(sd, AWB_CTL_REG(0), on ? 0xFB : 0x7B); + return ret; +} + +/* Called with struct noon010_info.lock mutex held */ +static int noon010_set_flip(struct v4l2_subdev *sd, int hflip, int vflip) +{ + struct noon010_info *info = to_noon010(sd); + int reg, ret; + + reg = cam_i2c_read(sd, VDO_CTL_REG(1)); + if (reg < 0) + return reg; + + reg &= 0x7C; + if (hflip) + reg |= 0x01; + if (vflip) + reg |= 0x02; + + ret = cam_i2c_write(sd, VDO_CTL_REG(1), reg | 0x80); + if (!ret) { + info->hflip = hflip; + info->vflip = vflip; + } + return ret; +} + +/* Configure resolution and color format */ +static int noon010_set_params(struct v4l2_subdev *sd) +{ + struct noon010_info *info = to_noon010(sd); + + int ret = cam_i2c_write(sd, VDO_CTL_REG(0), + info->curr_win->vid_ctl1); + if (ret) + return ret; + return cam_i2c_write(sd, ISP_CTL_REG(0), + info->curr_fmt->ispctl1_reg); +} + +/* Find nearest matching image pixel size. */ +static int noon010_try_frame_size(struct v4l2_mbus_framefmt *mf, + const struct noon010_frmsize **size) +{ + unsigned int min_err = ~0; + int i = ARRAY_SIZE(noon010_sizes); + const struct noon010_frmsize *fsize = &noon010_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; + if (size) + *size = match; + return 0; + } + return -EINVAL; +} + +/* Called with info.lock mutex held */ +static int power_enable(struct noon010_info *info) +{ + int ret; + + if (info->power) { + v4l2_info(&info->sd, "%s: sensor is already on\n", __func__); + return 0; + } + + if (gpio_is_valid(info->gpio_nstby)) + gpio_set_value(info->gpio_nstby, 0); + + if (gpio_is_valid(info->gpio_nreset)) + gpio_set_value(info->gpio_nreset, 0); + + ret = regulator_bulk_enable(NOON010_NUM_SUPPLIES, info->supply); + if (ret) + return ret; + + if (gpio_is_valid(info->gpio_nreset)) { + msleep(50); + gpio_set_value(info->gpio_nreset, 1); + } + if (gpio_is_valid(info->gpio_nstby)) { + udelay(1000); + gpio_set_value(info->gpio_nstby, 1); + } + if (gpio_is_valid(info->gpio_nreset)) { + udelay(1000); + gpio_set_value(info->gpio_nreset, 0); + msleep(100); + gpio_set_value(info->gpio_nreset, 1); + msleep(20); + } + info->power = 1; + + v4l2_dbg(1, debug, &info->sd, "%s: sensor is on\n", __func__); + return 0; +} + +/* Called with info.lock mutex held */ +static int power_disable(struct noon010_info *info) +{ + int ret; + + if (!info->power) { + v4l2_info(&info->sd, "%s: sensor is already off\n", __func__); + return 0; + } + + ret = regulator_bulk_disable(NOON010_NUM_SUPPLIES, info->supply); + if (ret) + return ret; + + if (gpio_is_valid(info->gpio_nstby)) + gpio_set_value(info->gpio_nstby, 0); + + if (gpio_is_valid(info->gpio_nreset)) + gpio_set_value(info->gpio_nreset, 0); + + info->power = 0; + + v4l2_dbg(1, debug, &info->sd, "%s: sensor is off\n", __func__); + + return 0; +} + +static int noon010_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct v4l2_subdev *sd = to_sd(ctrl); + struct noon010_info *info = to_noon010(sd); + int ret = 0; + + v4l2_dbg(1, debug, sd, "%s: ctrl_id: %d, value: %d\n", + __func__, ctrl->id, ctrl->val); + + mutex_lock(&info->lock); + /* + * If the device is not powered up by the host driver do + * not apply any controls to H/W at this time. Instead + * the controls will be restored right after power-up. + */ + if (!info->power) + goto unlock; + + switch (ctrl->id) { + case V4L2_CID_AUTO_WHITE_BALANCE: + ret = noon010_enable_autowhitebalance(sd, ctrl->val); + break; + case V4L2_CID_BLUE_BALANCE: + ret = cam_i2c_write(sd, MWB_BGAIN_REG, ctrl->val); + break; + case V4L2_CID_RED_BALANCE: + ret = cam_i2c_write(sd, MWB_RGAIN_REG, ctrl->val); + break; + default: + ret = -EINVAL; + } +unlock: + mutex_unlock(&info->lock); + return ret; +} + +static int noon010_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_fh *fh, + struct v4l2_subdev_mbus_code_enum *code) +{ + if (code->index >= ARRAY_SIZE(noon010_formats)) + return -EINVAL; + + code->code = noon010_formats[code->index].code; + return 0; +} + +static int noon010_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, + struct v4l2_subdev_format *fmt) +{ + struct noon010_info *info = to_noon010(sd); + struct v4l2_mbus_framefmt *mf; + + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { + if (fh) { + mf = v4l2_subdev_get_try_format(fh, 0); + fmt->format = *mf; + } + return 0; + } + mf = &fmt->format; + + mutex_lock(&info->lock); + 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; + + mutex_unlock(&info->lock); + return 0; +} + +/* Return nearest media bus frame format. */ +static const struct noon010_format *noon010_try_fmt(struct v4l2_subdev *sd, + struct v4l2_mbus_framefmt *mf) +{ + int i = ARRAY_SIZE(noon010_formats); + + while (--i) + if (mf->code == noon010_formats[i].code) + break; + mf->code = noon010_formats[i].code; + + return &noon010_formats[i]; +} + +static int noon010_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, + struct v4l2_subdev_format *fmt) +{ + struct noon010_info *info = to_noon010(sd); + const struct noon010_frmsize *size = NULL; + const struct noon010_format *nf; + struct v4l2_mbus_framefmt *mf; + int ret = 0; + + nf = noon010_try_fmt(sd, &fmt->format); + noon010_try_frame_size(&fmt->format, &size); + fmt->format.colorspace = V4L2_COLORSPACE_JPEG; + + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { + if (fh) { + mf = v4l2_subdev_get_try_format(fh, 0); + *mf = fmt->format; + } + return 0; + } + mutex_lock(&info->lock); + if (!info->streaming) { + info->apply_new_cfg = 1; + info->curr_fmt = nf; + info->curr_win = size; + } else { + ret = -EBUSY; + } + mutex_unlock(&info->lock); + return ret; +} + +/* Called with struct noon010_info.lock mutex held */ +static int noon010_base_config(struct v4l2_subdev *sd) +{ + int ret = noon010_bulk_write_reg(sd, noon010_base_regs); + if (!ret) + ret = noon010_set_params(sd); + if (!ret) + ret = noon010_set_flip(sd, 1, 0); + + return ret; +} + +static int noon010_s_power(struct v4l2_subdev *sd, int on) +{ + struct noon010_info *info = to_noon010(sd); + int ret; + + mutex_lock(&info->lock); + if (on) { + ret = power_enable(info); + if (!ret) + ret = noon010_base_config(sd); + } else { + noon010_power_ctrl(sd, false, true); + ret = power_disable(info); + } + mutex_unlock(&info->lock); + + /* Restore the controls state */ + if (!ret && on) + ret = v4l2_ctrl_handler_setup(&info->hdl); + + return ret; +} + +static int noon010_s_stream(struct v4l2_subdev *sd, int on) +{ + struct noon010_info *info = to_noon010(sd); + int ret = 0; + + mutex_lock(&info->lock); + if (!info->streaming != !on) { + ret = noon010_power_ctrl(sd, false, !on); + if (!ret) + info->streaming = on; + } + if (!ret && on && info->apply_new_cfg) { + ret = noon010_set_params(sd); + if (!ret) + info->apply_new_cfg = 0; + } + mutex_unlock(&info->lock); + return ret; +} + +static int noon010_log_status(struct v4l2_subdev *sd) +{ + struct noon010_info *info = to_noon010(sd); + + v4l2_ctrl_handler_log_status(&info->hdl, sd->name); + return 0; +} + +static int noon010_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) +{ + struct v4l2_mbus_framefmt *mf = v4l2_subdev_get_try_format(fh, 0); + + mf->width = noon010_sizes[0].width; + mf->height = noon010_sizes[0].height; + mf->code = noon010_formats[0].code; + mf->colorspace = V4L2_COLORSPACE_JPEG; + mf->field = V4L2_FIELD_NONE; + return 0; +} + +static const struct v4l2_subdev_internal_ops noon010_subdev_internal_ops = { + .open = noon010_open, +}; + +static const struct v4l2_ctrl_ops noon010_ctrl_ops = { + .s_ctrl = noon010_s_ctrl, +}; + +static const struct v4l2_subdev_core_ops noon010_core_ops = { + .s_power = noon010_s_power, + .g_ctrl = v4l2_subdev_g_ctrl, + .s_ctrl = v4l2_subdev_s_ctrl, + .queryctrl = v4l2_subdev_queryctrl, + .querymenu = v4l2_subdev_querymenu, + .g_ext_ctrls = v4l2_subdev_g_ext_ctrls, + .try_ext_ctrls = v4l2_subdev_try_ext_ctrls, + .s_ext_ctrls = v4l2_subdev_s_ext_ctrls, + .log_status = noon010_log_status, +}; + +static struct v4l2_subdev_pad_ops noon010_pad_ops = { + .enum_mbus_code = noon010_enum_mbus_code, + .get_fmt = noon010_get_fmt, + .set_fmt = noon010_set_fmt, +}; + +static struct v4l2_subdev_video_ops noon010_video_ops = { + .s_stream = noon010_s_stream, +}; + +static const struct v4l2_subdev_ops noon010_ops = { + .core = &noon010_core_ops, + .pad = &noon010_pad_ops, + .video = &noon010_video_ops, +}; + +/* Return 0 if NOON010PC30L sensor type was detected or -ENODEV otherwise. */ +static int noon010_detect(struct i2c_client *client, struct noon010_info *info) +{ + int ret; + + ret = power_enable(info); + if (ret) + return ret; + + ret = i2c_smbus_read_byte_data(client, DEVICE_ID_REG); + if (ret < 0) + dev_err(&client->dev, "I2C read failed: 0x%X\n", ret); + + power_disable(info); + + return ret == NOON010PC30_ID ? 0 : -ENODEV; +} + +static int noon010_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct noon010_info *info; + struct v4l2_subdev *sd; + const struct noon010pc30_platform_data *pdata + = client->dev.platform_data; + int ret; + int i; + + if (!pdata) { + dev_err(&client->dev, "No platform data!\n"); + return -EIO; + } + + info = kzalloc(sizeof(*info), GFP_KERNEL); + if (!info) + return -ENOMEM; + + mutex_init(&info->lock); + sd = &info->sd; + v4l2_i2c_subdev_init(sd, client, &noon010_ops); + strlcpy(sd->name, MODULE_NAME, sizeof(sd->name)); + + sd->internal_ops = &noon010_subdev_internal_ops; + sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + + v4l2_ctrl_handler_init(&info->hdl, 3); + + v4l2_ctrl_new_std(&info->hdl, &noon010_ctrl_ops, + V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1); + v4l2_ctrl_new_std(&info->hdl, &noon010_ctrl_ops, + V4L2_CID_RED_BALANCE, 0, 127, 1, 64); + v4l2_ctrl_new_std(&info->hdl, &noon010_ctrl_ops, + V4L2_CID_BLUE_BALANCE, 0, 127, 1, 64); + + sd->ctrl_handler = &info->hdl; + + ret = info->hdl.error; + if (ret) + goto np_err; + + info->i2c_reg_page = -1; + info->gpio_nreset = -EINVAL; + info->gpio_nstby = -EINVAL; + info->curr_fmt = &noon010_formats[0]; + info->curr_win = &noon010_sizes[0]; + + if (gpio_is_valid(pdata->gpio_nreset)) { + ret = gpio_request(pdata->gpio_nreset, "NOON010PC30 NRST"); + if (ret) { + dev_err(&client->dev, "GPIO request error: %d\n", ret); + goto np_err; + } + info->gpio_nreset = pdata->gpio_nreset; + gpio_direction_output(info->gpio_nreset, 0); + gpio_export(info->gpio_nreset, 0); + } + + if (gpio_is_valid(pdata->gpio_nstby)) { + ret = gpio_request(pdata->gpio_nstby, "NOON010PC30 NSTBY"); + if (ret) { + dev_err(&client->dev, "GPIO request error: %d\n", ret); + goto np_gpio_err; + } + info->gpio_nstby = pdata->gpio_nstby; + gpio_direction_output(info->gpio_nstby, 0); + gpio_export(info->gpio_nstby, 0); + } + + for (i = 0; i < NOON010_NUM_SUPPLIES; i++) + info->supply[i].supply = noon010_supply_name[i]; + + ret = regulator_bulk_get(&client->dev, NOON010_NUM_SUPPLIES, + info->supply); + if (ret) + goto np_reg_err; + + info->pad.flags = MEDIA_PAD_FL_SOURCE; + sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; + ret = media_entity_init(&sd->entity, 1, &info->pad, 0); + if (ret < 0) + goto np_me_err; + + ret = noon010_detect(client, info); + if (!ret) + return 0; + +np_me_err: + regulator_bulk_free(NOON010_NUM_SUPPLIES, info->supply); +np_reg_err: + if (gpio_is_valid(info->gpio_nstby)) + gpio_free(info->gpio_nstby); +np_gpio_err: + if (gpio_is_valid(info->gpio_nreset)) + gpio_free(info->gpio_nreset); +np_err: + v4l2_ctrl_handler_free(&info->hdl); + v4l2_device_unregister_subdev(sd); + kfree(info); + return ret; +} + +static int noon010_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct noon010_info *info = to_noon010(sd); + + v4l2_device_unregister_subdev(sd); + v4l2_ctrl_handler_free(&info->hdl); + + regulator_bulk_free(NOON010_NUM_SUPPLIES, info->supply); + + if (gpio_is_valid(info->gpio_nreset)) + gpio_free(info->gpio_nreset); + + if (gpio_is_valid(info->gpio_nstby)) + gpio_free(info->gpio_nstby); + + media_entity_cleanup(&sd->entity); + kfree(info); + return 0; +} + +static const struct i2c_device_id noon010_id[] = { + { MODULE_NAME, 0 }, + { }, +}; +MODULE_DEVICE_TABLE(i2c, noon010_id); + + +static struct i2c_driver noon010_i2c_driver = { + .driver = { + .name = MODULE_NAME + }, + .probe = noon010_probe, + .remove = noon010_remove, + .id_table = noon010_id, +}; + +module_i2c_driver(noon010_i2c_driver); + +MODULE_DESCRIPTION("Siliconfile NOON010PC30 camera driver"); +MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>"); +MODULE_LICENSE("GPL"); |